CN115956819B

CN115956819B - Noise reduction device, base and cooking machine

Info

Publication number: CN115956819B
Application number: CN202111193682.9A
Authority: CN
Inventors: 刘华; 刘苗; 梅长云; 梁建辉; 邱锐杰
Original assignee: Guangdong Midea Consumer Electric Manufacturing Co Ltd
Current assignee: Guangdong Midea Consumer Electric Manufacturing Co Ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2024-07-16
Anticipated expiration: 2041-10-13
Also published as: CN115956819A

Abstract

The invention provides a noise reduction device, a base and a food processor. Wherein, noise reduction device for cooking machine includes: the shell is internally provided with a plurality of noise reduction cavities, the shell is further provided with a first air duct, the side wall of the first air duct is provided with a plurality of communication parts, and each noise reduction cavity is communicated with at least one communication part. According to the invention, through reasonably arranging the structure of the noise reduction device, the noise reduction device comprises a plurality of noise reduction cavities, sound waves in the noise reduction cavities rub against the inner walls of the noise reduction cavities, and mechanical energy is converted into heat energy, so that the sound energy is consumed, the effect of sound absorption and noise reduction can be effectively achieved, and the aim of eliminating specific target noise reduction frequency can be achieved. The operation noise of cooking machine can be pertinently reduced, and noise reduction effect is good.

Description

Noise reduction device, base and cooking machine

Technical Field

The invention relates to the technical field of cooking machines, in particular to a noise reduction device, a base and a cooking machine.

Background

In the related art, the cooking machine includes cup subassembly, and the crushing sword of cup subassembly rotates in order to stir garrulous food material during operation of cooking machine, and food material striking cup subassembly's internal face can produce the noise. And the motor of cup body subassembly is connected with the flabellum of cup body subassembly, and the motor work also can produce great noise, and user experience is poor.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

To this end, a first aspect of the invention proposes a noise reduction device.

A second aspect of the present invention proposes a base.

A third aspect of the present invention provides a food processor.

In view of this, an aspect of the present invention provides a noise reduction device for a food processor, including: the shell is internally provided with a plurality of noise reduction cavities, the shell is further provided with a first air duct, the side wall of the first air duct is provided with a plurality of communication parts, and each noise reduction cavity is communicated with at least one communication part.

The invention provides a noise reduction device which comprises a shell, wherein a plurality of noise reduction cavities are arranged in the shell, the shell is further provided with a first air duct, a plurality of communication parts are arranged on the side wall of the first air duct, and each noise reduction cavity is communicated with at least one communication part. The sound wave that cooking machine during operation produced propagates a plurality of intercommunication portions through first wind channel, gets into a plurality of intracavity of making an uproar that falls, then by a plurality of intracavity of making an uproar that fall outgoing noise reduction device that falls. That is, for the noise reduction cavity, the inlet and the outlet of the noise reduction cavity are of the same structure (i.e., the communication part), and the sound wave is transmitted into the noise reduction cavity from the communication part and then is transmitted out from the communication part.

Through the structure of reasonable setting noise reduction device for noise reduction device includes a plurality of noise reduction chambeies, the inner wall friction of noise reduction intracavity sound wave and noise reduction chambeies falls, converts mechanical energy into heat energy, thereby consumes acoustic energy, can effectively reach the effect of noise reduction of sound absorption.

It can be understood that when the food processor works, the target noise reduction frequency characteristic is kept unchanged, and the noise reduction device has relevance with the target noise reduction frequency of the food processor, so that the aim of eliminating the specific target noise reduction frequency can be achieved. The operation noise of cooking machine can be pertinently reduced, and noise reduction effect is good.

Further, the number of the noise reduction cavities is multiple, so that the structure of the noise reduction cavities can be set in a targeted manner according to the target noise reduction frequency, for example, the noise reduction cavities with multiple specifications are set for multiple different frequencies, for example, the noise reduction cavities with the same specifications are set for the same frequency, thereby being beneficial to realizing broadband sound absorption and noise reduction, meeting the diversified use requirements of users, and being beneficial to improving the use performance and market competitiveness of products.

The noise reduction device according to the present invention may further have the following additional technical features:

in the above technical solution, further, the plurality of noise reduction cavities are located on the peripheral side of the first air duct.

In this technical scheme, through the cooperation structure that sets up a plurality of chamber of making an uproar and first wind channel rationally for a plurality of chamber of making an uproar that makes an uproar are located first wind channel in the week side, like this, can the structure in rational utilization first wind channel, guarantee that a plurality of intercommunication portions and a plurality of cooperation size that makes an uproar the chamber of making an uproar provide effective and reliable structural support.

In any of the above solutions, further, the plurality of noise reduction cavities includes a first noise reduction cavity, the first noise reduction cavity includes a resonance pipe and a resonance chamber, and the resonance pipe is communicated with the resonance chamber and the communication part; wherein the cross-sectional area of the resonant duct is smaller than the cross-sectional area of the resonant chamber.

In the technical proposal, the structure of the plurality of noise reduction cavities is reasonably arranged, so that the plurality of noise reduction cavities comprise a first noise reduction cavity, the first noise reduction cavity comprises a resonance pipeline and a resonance cavity, and the resonance pipeline is communicated with the resonance cavity and the communicating part. Specifically, when the food processor works, part of sound waves in the food processor are transmitted to the resonance cavity through the resonance pipeline, and then transmitted to the resonance pipeline through the resonance cavity and transmitted to the first air duct. That is, the inlet and the outlet of the first noise reduction cavity are of the same structure, and the sound wave is transmitted into the resonance cavity through the resonance pipeline and then transmitted out through the resonance pipeline.

Through reasonable cooperation structure that sets up resonance pipeline and resonance cavity for the cross-sectional area that overflows of resonance pipeline is less than the cross-sectional area that overflows of resonance cavity, promptly, resonance pipeline and resonance cavity constitute resonant cavity structure jointly, when the sound wave passes to resonance cavity, the resonance of resonance cavity structure is aroused to the part that is close with the natural frequency of resonance cavity structure in the sound wave, in the vibration process, the sound wave in the resonant cavity structure rubs with the inner wall of resonance pipeline and resonance cavity, converts mechanical energy into heat energy, thereby consume the acoustic energy, can effectively reach the effect of making an uproar of falling of sound absorption.

Further, the overflow cross-sectional area of the resonance pipeline is smaller than that of the resonance cavity, namely, the structure of the first noise reduction cavity is reasonably arranged, the coupling between the sound wave and the first noise reduction cavity is facilitated, and therefore the noise reduction effect of the noise reduction device can be guaranteed.

In any of the above technical solutions, further, the overcurrent cross-sectional area S1 of the resonance tube, the volume V1 of the resonance chamber, the length L1 of the resonance tube, the sound velocity c1, and the target noise reduction frequency f1 of the food processor satisfy:L1≥2mm。

In the technical scheme, when the food processor works, the target noise reduction frequency characteristic is kept unchanged, and the overflow cross-sectional area S1 of the resonance pipeline, the volume V1 of the resonance cavity, the length L1 of the resonance pipeline and the sound velocity c1 are all associated with the target noise reduction frequency f1 of the food processor. That is, when guaranteeing the noise reduction effect of noise reduction device, effectively adapt to the inner space overall arrangement of cooking machine, be favorable to reducing the occupancy rate of noise reduction device to cooking machine inner space, and then be favorable to realizing the miniaturization of cooking machine.

Specifically, the length L1 of the resonance tube includes 3mm, 4mm, 5mm, 6mm, etc., which are not exemplified herein.

In any of the above technical solutions, further, the plurality of noise reduction cavities includes a second noise reduction cavity, the second noise reduction cavity is a wavelength tube, and the wavelength tube is communicated with the communicating portion.

In this technical scheme, through the structure that sets up a plurality of chamber of making an uproar falls in reasonable, make a plurality of chambeies of making an uproar include the chamber of making an uproar of second falls in a plurality of chambeies of making an uproar, wherein, the chamber of making an uproar of second falls the wavelength pipe, and makes wavelength pipe and intercommunication portion intercommunication. The size of the wave tube has relevance with the target noise reduction frequency of the food processor. When the food processor works, sound waves in the first air channel are transmitted into the wavelength tube through the communication part and then transmitted out through the communication part. That is, the wave length tube has only one opening, and the sound wave is transmitted into the wave length tube from the communicating portion, a part of the sound wave is absorbed, and a part of the sound wave is transmitted from the same communicating portion.

When the food processor works, the noise frequency characteristic is kept unchanged, and the purpose of eliminating noise corresponding to the target noise reduction frequency can be achieved because the size of the wave tube has relevance with the target noise reduction frequency of the food processor. Through setting up the wavelength pipe that corresponds with the frequency of making an uproar falls in the target, can pertinence reduce the operation noise of cooking machine, and it is effectual to make an uproar to fall.

Specifically, the sound wave is transmitted into the wave tube through the communicating part, and then reflected after reaching the bottom of the wave tube, the reflected wave and the incident wave are overlapped to form a standing wave, the node of the standing wave is positioned at the bottom of the wave tube, when the antinode of the standing wave is positioned at the communicating part, resonance is generated, the particle amplitude is maximum at the moment, and the consumed sound energy is also maximum, so that the sound wave has remarkable sound absorption effect at the resonance frequency.

That is, the wave tube of the application can perform noise reduction treatment on noise in a specific frequency band, and has good noise reduction effect.

In any one of the above technical solutions, further, the sound velocity c2, the length L2 of the wavelength tube, and the target noise reduction frequency f2 of the food processor satisfy:

in this technical scheme, the cooking machine during operation, the target noise reduction frequency characteristic is kept unchanged, and sound velocity c2, length L2 of wavelength pipe and the target noise reduction frequency f2 of cooking machine satisfy: That is, the sound velocity c2 and the length L2 of the wave tube have a correlation with the target noise reduction frequency f2 of the food processor. The length of the wave length tube is inversely related to the target noise reduction frequency. The longer the length of the wave length tube, the lower the target noise reduction frequency; the shorter the length of the wave tube, the higher the target noise reduction frequency.

Specifically, the flow cross-sectional area of the wave tube is positively correlated with the amount of muffling. The larger the flow cross-sectional area of the wave tube is, the larger the noise elimination amount is; the smaller the flow cross-sectional area of the wave length tube, the smaller the noise damping amount.

In any of the above technical solutions, further, target noise reduction frequencies corresponding to any two noise reduction cavities in the plurality of noise reduction cavities are different.

In the technical scheme, the structure of the plurality of noise reduction cavities is reasonably arranged, so that the target noise reduction frequencies corresponding to any two noise reduction cavities in the plurality of noise reduction cavities are different, noise corresponding to the plurality of target noise reduction frequencies can be subjected to noise reduction treatment by utilizing the plurality of noise reduction cavities, and effective and reliable structural support is provided for realizing broadband sound absorption.

Specifically, the target noise reduction frequencies corresponding to any two noise reduction cavities in the plurality of noise reduction cavities are different, and because the sizes of the noise reduction cavities have correlation with the target noise reduction frequencies, it can be understood that the sizes of any two noise reduction cavities in the plurality of noise reduction cavities are different.

In any of the above technical solutions, further, the housing includes a multi-layer housing body, the first air duct includes a plurality of sub-air ducts, and a sub-air duct is disposed on each layer of housing body; a plurality of noise reduction cavities are surrounded between any two adjacent shell bodies.

In this technical scheme, through the structure that rationally sets up the casing for the casing includes the multilayer shell body, and surrounds out a plurality of chambers of making an uproar between the arbitrary adjacent two-layer shell body. That is, the inside multilayer region that has of casing, be provided with a plurality of chambeies of making an uproar of falling in every layer region, this setting up the inner space of rationally arranging noise reducer has increased the quantity of making an uproar of falling the chambeies, is favorable to according to the in-service use demand, pertinence setting up the structure in a plurality of chambeies of making an uproar of falling, provides effectual structural support for making an uproar of falling the noise that a plurality of targets fall the frequency and correspond.

Further, the first air duct comprises a plurality of sub air ducts, and each layer of shell body is provided with one sub air duct. After the multi-layer shell body is assembled together, any two adjacent sub-air ducts in the plurality of sub-air ducts are correspondingly connected, namely, the plurality of sub-air ducts surround the first air duct.

In any of the above solutions, further, the case body includes: the partition plate is provided with a through hole, and the sub air duct is positioned on the periphery side of the through hole; the coaming is arranged on the baffle plate, in any two adjacent shell bodies, the coaming of one shell body is propped against the baffle plate of the other shell body, and a plurality of noise reduction cavities are formed between the baffle plate and the coaming in an encircling manner.

In this technical scheme, the shell body includes baffle and bounding wall. The baffle is provided with the through-hole, and the sub-wind channel is located the week side of through-hole, and the through-hole can guarantee the intercommunication of arbitrary adjacent two sub-wind channels in a plurality of sub-wind channels.

In addition, the coaming is arranged on the partition board, and in any two adjacent shell bodies, the coaming of one shell body is propped against the partition board of the other shell body. That is, the coaming and the baffle of any two-layer adjacent shell body cooperate, when satisfying the user demand that forms a plurality of chamber of making an uproar falls, reduce the material ground that encloses the chamber of making an uproar falls and throw into, be favorable to reducing the manufacturing cost of product. Simultaneously, this setting is in guaranteeing the volumetric of a plurality of chambers of making an uproar, is favorable to reducing the whole overall dimension of making an uproar device of making an uproar, and then is favorable to reducing the occupancy rate of making an uproar device to cooking machine inner space, the rational layout of other component devices of cooking machine of being convenient for.

It is understood that in any two adjacent shell bodies, the coaming of one shell body abuts against the partition board of the other shell body. Namely, the coaming of one shell body is connected with the baffle of the other shell body so as to ensure the airtight requirement of the noise reduction cavity.

In any of the above technical solutions, further, in any two adjacent shell bodies, the coaming of one shell body is staggered with the coaming of the other shell body.

In this technical scheme, through the arrangement position of the bounding wall of rationally setting up adjacent two-layer shell body for in the arbitrary adjacent two-layer shell body, the bounding wall of a shell body, with the bounding wall staggered arrangement of another shell body, when satisfying the user demand that forms a plurality of chambers of making an uproar, be favorable to increasing the interval between two adjacent baffles in every shell body, like this, can reduce the processing degree of difficulty of production shell body, be favorable to reducing manufacturing cost, and be favorable to prolonging the life of the mould of production shell body.

In any of the above technical solutions, further, the noise reduction device further includes a sealing member, where the sealing member is used to seal a joint between any two adjacent shell bodies.

In this technical scheme, noise reduction device still includes the sealing member, and the sealing member is located the junction of arbitrary adjacent two-layer shell body, promptly, utilizes the sealing member to seal the junction of arbitrary adjacent two-layer shell body, like this, can avoid the air current to leak by the junction of arbitrary adjacent two-layer shell body, guarantees the good leakproofness of junction of adjacent two-layer shell body to this flow path that comes to inject the air current, and then can guarantee to fall effective contact of noise cavity and sound wave, provides effective and reliable structural support for promoting noise reduction effect of noise reduction device.

In addition, the sealing member is located the junction of arbitrary adjacent two-layer shell body, can play the effect of damping, like this, cooking machine during operation can avoid the hard contact between the adjacent two-layer shell body, is favorable to reducing and promotes the noise reduction effect of noise reduction device further.

Specifically, the sealing member is a sealing ring. Further, the sealing member is a rubber member.

In any of the above technical solutions, further, two-layer shell bodies of the outermost layer in the multi-layer shell body are denoted as a first shell body and a second shell body, at least one of the first shell body and the second shell body is provided with a guide post, the shell body located between the first shell body and the second shell body is provided with a guide hole, and the guide post can be inserted into the guide hole.

In this technical scheme, through the cooperation structure that rationally sets up the multilayer shell body for the outermost two-layer shell body in the multilayer shell body is recorded as first shell body and second shell body, and makes first shell body be provided with the guide post, or makes the second shell body be provided with the guide post, or makes first shell body and second shell body all be provided with the guide post. In addition, a case body located between the first case body and the second case body is provided with a guide hole. Thus, when the multi-layered shell body is assembled, the guide post can be inserted into the guide hole to complete the assembly of the multi-layered shell body. The guide post is connected with the guide hole in a matched manner so as to limit the relative displacement of the two adjacent shell bodies, so that the matched size between the two adjacent shell bodies can be ensured, and the overall dimension of the noise reduction device can be further ensured.

Further, the guide post and the guide hole are matched with each other to guide the assembly of the adjacent two-side shell bodies, so that the assembly difficulty of the adjacent two-side shell bodies is reduced, and the disassembly and assembly efficiency of the multi-layer shell body is improved.

Specifically, at least one guide post is arranged at each corner of the first shell body; or at least one guide post is arranged at each corner of the second shell body; or at least one guide post is provided at each corner of the first case body and at each corner of the second case body. The arrangement can ensure the matching size of the multi-layer shell body.

In any of the above technical solutions, further, the partition plate is provided with a slot, and in any two adjacent shell bodies, the coaming of one shell body is inserted into the slot of the other shell body.

In this technical scheme, through the cooperation structure of reasonable bounding wall and the baffle that sets up arbitrary adjacent two-layer shell body for in the arbitrary adjacent two-layer shell body, the bounding wall of a shell body inserts in the slot of another shell body. The slot can wrap the end of the coaming inserted therein, which is beneficial to improving the tightness of the joint of the coaming and the baffle plate, and provides effective and reliable structural support for defining the flow path of the air flow.

That is, the coaming and the baffle of any two-layer adjacent shell body cooperate, when satisfying the user demand that forms a plurality of chamber of making an uproar falls, reduce the material ground that encloses the chamber of making an uproar falls and throw into, be favorable to reducing the manufacturing cost of product. Simultaneously, this setting is in guaranteeing the volumetric of a plurality of chambers of making an uproar, is favorable to reducing the whole overall dimension of making an uproar device of making an uproar, and then is favorable to reducing the occupancy rate of making an uproar device to cooking machine inner space, the rational layout of other component devices of cooking machine of being convenient for.

In any of the above technical solutions, further, a water receiving tank and a water leakage hole are provided on the outer surface of the housing, the water receiving tank is communicated with the water leakage hole; the noise reduction cavity is positioned at one side of the water leakage hole.

In this technical scheme, through the structure of reasonable setting casing for the surface of casing is provided with the water receiving tank and leaks the hole, and the water receiving tank is linked together with leaking the hole, promptly, if the comdenstion water drips when falling on the casing, the comdenstion water can flow to leaking hole department along the water receiving tank, then discharges noise reduction device, has reduced the comdenstion water seepage to the probability of occurrence of the chamber of will making an uproar that falls, can guarantee noise reduction device's noise reduction effect. The setting enriches the use functions of the noise reduction device, and improves the use performance and market competitiveness of the noise reduction device.

Further, the noise reduction cavity is positioned at one side of the water leakage hole, and water flow discharged by the water leakage hole is positioned at one side of the noise reduction cavity, so that condensed water can be effectively prevented from flowing to the noise reduction cavity.

In any of the above technical solutions, further, an air guiding groove is provided on a side of the housing facing away from the water receiving groove.

In the technical scheme, one side of the shell, which is away from the water receiving groove, is provided with the air guide groove, so that the noise reduction device has the function of guiding airflow to limit the flow path of the airflow. The setting enriches the use functions of the noise reduction device, and improves the use performance and market competitiveness of the noise reduction device.

A second aspect of the present invention provides a base for a food processor, the base comprising: the noise reduction device of any one of the first aspects.

The base provided by the invention comprises the noise reduction device as in any one of the first aspect, so that the base has all the beneficial effects of the noise reduction device, and no statement is made here.

Specifically, the number of noise reduction devices is at least one.

In the above technical solution, further, the base further includes: the seat body is provided with the second wind channel in the seat body, and the seat body still is provided with air intake and air outlet, and second wind channel intercommunication air intake and air outlet fall noise reduction device and are located the second wind channel.

In this technical scheme, the base still includes: the seat body is provided with the second wind channel in the seat body, and second wind channel and air intake intercommunication, and second wind channel and air outlet intercommunication, that is, second wind channel intercommunication air intake and air outlet. The noise reduction device is positioned in the second air duct so as to ensure that the noise reduction device is in effective contact with sound waves, and an effective structural support is provided for noise reduction treatment of the noise reduction device.

In any of the above technical solutions, further, the base further includes: the sound absorbing cotton is positioned in the second air duct and positioned on the periphery of the noise reduction device.

In this technical scheme, the base still includes inhales the sound cotton, inhales the sound cotton and is located the second wind channel, inhales the sound cotton and can play the effect of making an uproar that falls, also inhale the sound cotton and make an uproar device and cooperate promptly to realize carrying out multistage noise reduction to the sound wave and handling, be favorable to promoting the noise reduction effect of cooking machine.

Specifically, the cooking machine includes the cup subassembly, and the cup subassembly includes the pedestal, is provided with motor and flabellum in the pedestal, and motor drive flabellum rotates, and the pedestal communicates with the second wind channel. During operation, the motor drives the fan blade to rotate so as to suck air from the air inlet of the base, and air flows to the noise reduction device after passing through the sound-absorbing cotton, the motor and the fan blade, and then is discharged out of the cooking machine through the air outlet. That is, after the air inlet enters the second air duct, the noise is reduced through the noise reduction device after the noise is reduced through the sound absorption cotton, so that the multi-stage noise reduction treatment is realized. The sound absorbing cotton is positioned on the periphery of the noise reduction device, and effective structural support is provided for multistage noise reduction treatment.

In any of the above technical solutions, further, a first opening is provided at the top of the seat body, the first opening is communicated with the second air duct, and the first opening is used for communicating with a cup body assembly of the food processor; the bottom of seat body is provided with air intake and air outlet, and at least part of air intake corresponds the setting with inhaling the sound cotton, and at least part of air outlet corresponds the setting with first wind channel.

In this technical scheme, through the structure of reasonable setting seat body for the seat body is provided with first opening, air intake and air outlet. Specifically, the top of seat body is provided with first opening, and the bottom of seat body is provided with air intake and air outlet.

The cup body component of cooking machine detachably sets up at the top of base, sets up first opening at the top of seat body, can guarantee by the air intake the air current of entering second wind channel can flow to the motor department of cup body component by first opening, that is, guarantees the smoothness nature of air current flow path.

In addition, the bottom of seat body is provided with air intake and air outlet, when guaranteeing the smooth and easy nature of air current flow, has the effect of hiding air intake and air outlet, avoids air intake and air outlet to expose, is favorable to promoting the aesthetic property of product outward appearance.

Further, at least a part of the air inlet is arranged corresponding to the sound-absorbing cotton, so that the air flow entering through the air inlet needs to flow through the sound-absorbing cotton, effective contact between the sound-absorbing cotton and the air flow is guaranteed, and then the noise reduction effect of the sound-absorbing cotton is guaranteed.

Further, at least a part of the air outlet is arranged corresponding to the first air duct, so that the air flow can be ensured to flow to the air outlet after the noise reduction treatment of the noise reduction device, and the noise reduction effect of the noise reduction device is ensured.

A third aspect of the present invention provides a food processor, including: the base of any one of the second aspects.

The food processor provided by the invention comprises the base as in any one of the second aspects, so that the food processor has all the beneficial effects of the base, and no statement is made here.

In the above technical scheme, further, the cooking machine still includes: the cup body assembly is detachably connected with the base.

In this technical scheme, cooking machine still includes cup subassembly, and cup subassembly and base demountable connection, cup subassembly are used for holding edible material to have the function of culinary art edible material (e.g. crushing edible material, heating edible material etc.). The cup body component is detachably connected with the base, the base has the function of supporting and fixing the cup body component, the cup body component can be assembled with the base, and the cup body component can be separated from the base.

In any of the above solutions, further, the cup assembly includes: a cup body; the crushing knife is positioned in the cup body; the base body is connected with the cup body and is provided with a second opening; the motor is positioned in the base body and comprises a driving shaft, and the first end of the driving shaft extends into the cup body and is connected with the crushing cutter; the fan blade is positioned in the base, and the second end of the driving shaft is connected with the fan blade; wherein, the first opening of base communicates with the second opening.

In this technical scheme, the cup subassembly includes cup, crushing sword, pedestal, motor and flabellum. The seat body is provided with a second opening, and the second opening is communicated with the first opening, namely, the seat body is communicated with a second air channel of the base.

Specifically, the cup body component comprises a base body, a motor and fan blades are arranged in the base body, and the motor drives the crushing knife to rotate and simultaneously drives the fan blades to rotate. During operation, the motor drives the fan blade to rotate so as to suck air from the air inlet of the base, air flows through the sound-absorbing cotton, flows from the first opening to the second opening, flows from the second opening to the first opening after passing through the motor and the fan blade, flows to the noise reduction device, and is discharged out of the food processor through the air outlet. The arrangement can ensure the effective contact of the air flow with the motor and the fan blades, so that the outside cold air is utilized to radiate the motor and the fan, the working temperature of the motor can be ensured, and the structural support is provided for prolonging the service life of the motor.

It can be understood that the motor rotates at a high speed to generate rotary power, and the motor generates heat when in operation, so that a driving shaft of the motor is connected with the fan blades, and the fan blades are utilized to dissipate heat of the motor. When the motor works and drives the fan blades to rotate, vibration noise and wind resistance turbulence noise can be generated, that is, the main noise source of the food processor comprises the motor and the fan blades. Therefore, noise reduction treatment is carried out by utilizing the sound-absorbing cotton and the noise reduction device.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

Fig. 1 shows a schematic structural diagram of a first view angle of a noise reduction device according to a first embodiment of the present invention;

Fig. 2 shows a schematic structural diagram of a second view of the noise reduction device according to the first embodiment of the present invention;

Fig. 3 is a schematic structural view showing a third view angle of the noise reduction device according to the first embodiment of the present invention;

Fig. 4 is a schematic view showing a structure of a first view angle of a noise reduction device according to a second embodiment of the present invention;

fig. 5 shows a schematic structural diagram of a second view of a noise reduction device according to a second embodiment of the present invention;

Fig. 6 shows a schematic structural diagram of a third view of a noise reduction device according to a second embodiment of the present invention;

fig. 7 is a schematic structural view showing a fourth view angle of a noise reduction device according to a second embodiment of the present invention;

Fig. 8 is a schematic structural view showing a fifth view angle of a noise reduction device according to a second embodiment of the present invention;

Fig. 9 is a schematic structural view showing a sixth view angle of a noise reduction device according to a second embodiment of the present invention;

fig. 10 is a schematic view showing a partial structure of a first view angle of a noise reduction device according to a second embodiment of the present invention;

FIG. 11 is a schematic view showing a partial structure of a second view angle of a noise reduction device according to a second embodiment of the present invention;

fig. 12 is a schematic view showing a part of the structure of a third view angle of a noise reduction device according to a second embodiment of the present invention;

Fig. 13 is a schematic view showing a part of the structure of a fourth view angle of a noise reduction device according to a second embodiment of the present invention;

Fig. 14 is a partial schematic view showing a fifth view of a noise reduction device according to a second embodiment of the present invention;

fig. 15 is a schematic view showing a part of the structure of a sixth view of a noise reduction device of a second embodiment of the present invention;

FIG. 16 shows an exploded view of a first view of a noise reducer of a second embodiment of the invention;

FIG. 17 shows an exploded view of a second view of a noise reducer of a second embodiment of the invention;

FIG. 18 shows an exploded view of a third view of a noise reducer of a second embodiment of the invention;

Fig. 19 shows an exploded view of a fourth view of a noise reduction device of a second embodiment of the invention;

fig. 20 is a schematic view showing the structure of a case body of a second embodiment of the present invention;

fig. 21 is a partial structural view showing a first view angle of a food processor according to an embodiment of the present invention;

fig. 22 is a partial structural view showing a second view of a food processor according to an embodiment of the present invention;

fig. 23 is a partial enlarged view of a portion a of the food processor shown in fig. 22;

FIG. 24 is a schematic view showing a part of the structure of a food processor according to an embodiment of the present invention;

fig. 25 illustrates a schematic structure of a first view of a food processor according to an embodiment of the present invention;

Fig. 26 illustrates a structural diagram of a second view of a food processor according to an embodiment of the present invention;

Fig. 27 is a schematic view showing a structure of a third view of a food processor according to an embodiment of the present invention;

FIG. 28 shows a partial schematic structural view of a base of an embodiment of the present invention;

FIG. 29 is a schematic view showing a partial structure of a first sub-cap according to an embodiment of the present invention;

FIG. 30 shows an exploded view of a first sub-cap of one embodiment of the present invention;

FIG. 31 is a schematic view showing a partial structure of a second sub-cap according to an embodiment of the present invention;

Fig. 32 is a graph showing data of sound damping amounts of the food processor of the present invention and the food processor in the related art.

Wherein, the correspondence between the reference numerals and the component names in fig. 1 to 31 is:

100 cooking machines, 110 bases, 112 bases, 116 first openings, 118 air inlets, 119 air outlets, 120 cover body components, 122 covers, 130 accommodating cavities, 140 cover body components, 142 cover bodies, 144 crushing cutters, 146 bases, 148 motors, 150 driving shafts, 152 fan blades, 170 noise reduction devices, 172 housings, 174 first air channels, 176 communicating parts, 178 first noise reduction cavities, 180 resonance pipelines, 182 resonance cavities, 184 second noise reduction cavities, 186 housing bodies, 188 partition plates, 192 coamings, 194 slots, 196 guide posts, 200 water receiving grooves, 202 water leakage holes, 204 air guide grooves, 210 sound absorbing cotton, 220 first sub-covers, 222 channels, 224 first cavities, 226 first air inlets, 228 air outlets, 230 communicating structures, 232 first sub-covers, 234 second sub-covers, 236 covers, 238 first surrounding edges, 240 second sub-covers, 242 second air inlets, 244 second cavities, 246 second surrounding edges, 250 second sealing parts, 260 third sealing parts and 270 first sealing parts.

Detailed Description

In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.

The noise reducer 170, the base 110, and the food processor 100 according to some embodiments of the present invention are described below with reference to fig. 1 to 32.

Example 1:

as shown in fig. 1,2, 3, 4, 5, 6, 7, 8 and 9, an embodiment of the first aspect of the present invention provides a noise reduction device 170, for a food processor 100, including: the casing 172, a plurality of chambers of making an uproar that fall are set up in the casing 172, and the casing 172 still is provided with first wind channel 174, is provided with a plurality of intercommunication portion 176 on the lateral wall of first wind channel 174, and every chamber of making an uproar that falls communicates with at least one intercommunication portion 176.

In detail, the noise reduction device 170 includes a housing 172, a plurality of noise reduction cavities are provided in the housing 172, and the housing 172 is further provided with a first air duct 174, and a plurality of communication parts 176 are provided on a sidewall of the first air duct 174, wherein each noise reduction cavity is communicated with at least one communication part 176. The sound wave generated during the operation of the food processor 100 propagates to the plurality of communicating portions 176 through the first air duct 174, enters the plurality of noise reduction cavities, and then is transmitted out of the noise reduction device 170 through the plurality of noise reduction cavities. That is, for the noise reduction cavity, the inlet and the outlet of the noise reduction cavity are of the same structure (i.e., the communication portion 176), and the sound wave is transmitted into the noise reduction cavity from the communication portion 176 and then is transmitted out from the communication portion 176.

Through the structure of reasonable setting noise reducer 170 for noise reducer 170 includes a plurality of chambeies of making an uproar that fall, falls the inner wall friction in intracavity of making an uproar sound wave and the chamber of making an uproar that falls, converts mechanical energy into heat energy, thereby consumes acoustic energy, can effectively reach the effect of making an uproar that falls of sound absorption.

It will be appreciated that, when the food processor 100 is in operation, the target noise reduction frequency characteristic is kept unchanged, and the noise reduction device 170 has an association with the target noise reduction frequency of the food processor 100, so as to achieve the purpose of eliminating the specific target noise reduction frequency. The operation noise of the food processor 100 can be reduced with pertinence, and the noise reduction effect is good.

In this embodiment, each noise reduction chamber communicates with one communication portion 176.

In other embodiments, each noise reduction cavity communicates with a plurality of communication portions 176.

Further, a plurality of noise reduction chambers are located on the circumferential side of the first air duct 174.

Wherein, in this technical scheme, through the cooperation structure that sets up a plurality of chamber of making an uproar and first wind channel 174 rationally for a plurality of chamber of making an uproar are located first wind channel 174 in the week side, like this, can the structure of rational utilization first wind channel 174, guarantee that a plurality of intercommunication portions 176 and a plurality of cooperation size in chamber of making an uproar provide effective and reliable structural support.

Example 2:

As shown in fig. 1 to 9, on the basis of embodiment 1, embodiment 2 provides a noise reduction device 170 for a food processor 100, including: the casing 172, a plurality of chambers of making an uproar that fall are set up in the casing 172, and the casing 172 still is provided with first wind channel 174, is provided with a plurality of intercommunication portion 176 on the lateral wall of first wind channel 174, and every chamber of making an uproar that falls communicates with at least one intercommunication portion 176.

Further, as shown in fig. 10, 11, 12 and 13, the plurality of noise reduction cavities includes a first noise reduction cavity 178, the first noise reduction cavity 178 includes a resonance pipe 180 and a resonance chamber 182, and the resonance pipe 180 communicates the resonance chamber 182 and the communication portion 176; wherein the cross-sectional area of the resonant ducts 180 is smaller than the cross-sectional area of the resonant cavity 182.

In detail, by reasonably setting the structure of the plurality of noise reduction cavities, the plurality of noise reduction cavities includes a first noise reduction cavity 178, the first noise reduction cavity 178 includes a resonance pipe 180 and a resonance chamber 182, and the resonance pipe 180 communicates the resonance chamber 182 and the communication part 176. Specifically, when the food processing machine 100 is in operation, a portion of sound waves in the food processing machine 100 are propagated to the resonance chamber 182 through the resonance pipeline 180, and then are propagated to the resonance pipeline 180 from the resonance chamber 182 and are propagated to the first air duct 174. That is, the inlet and outlet of the first noise reduction cavity 178 are the same structure, and the sound wave is transmitted into the resonance chamber 182 through the resonance pipeline 180 and then is transmitted out through the resonance pipeline 180.

Through the cooperation structure of reasonable setting resonance pipeline 180 and resonance cavity 182 for the cross-sectional area that overflows of resonance pipeline 180 is less than the cross-sectional area that overflows of resonance cavity 182, promptly, resonance pipeline 180 and resonance cavity 182 constitute resonant cavity structure jointly, when the sound wave passes to resonance cavity 182, the resonance of resonance cavity structure is aroused to the part that is close with the natural frequency of resonance cavity structure in the sound wave, in the vibration process, the sound wave in the resonant cavity structure rubs with the inner wall of resonance pipeline 180 and resonance cavity 182, converts mechanical energy into heat energy, thereby consume the acoustic energy, can effectively reach the effect of sound absorption and noise reduction.

In addition, the cross-sectional area of the resonance pipeline 180 is smaller than that of the resonance chamber 182, that is, the structure of the first noise reduction cavity 178 is reasonably arranged, which is favorable for coupling between the sound wave and the first noise reduction cavity 178, so that the noise reduction effect of the noise reduction device 170 can be ensured.

Further, the flow cross-sectional area S1 of the resonance conduit 180, the volume V1 of the resonance chamber 182, the length L1 of the resonance conduit 180, the sound velocity c1, and the target noise reduction frequency f1 of the food processor 100 satisfy:L1≥2mm。

When the food processor 100 works, the target noise reduction frequency characteristic is kept unchanged, and the overflow cross-sectional area S1 of the resonance pipeline 180, the volume V1 of the resonance cavity 182, the length L1 of the resonance pipeline 180 and the sound velocity c1 are all related to the target noise reduction frequency f1 of the food processor 100. That is, while ensuring the noise reduction effect of the noise reduction device 170, the internal space layout of the food processor 100 is effectively adapted, which is beneficial to reducing the occupancy rate of the noise reduction device 170 to the internal space of the food processor 100, and further is beneficial to realizing the miniaturization of the food processor 100.

Specifically, the length L1 of the resonance conduit 180 includes 3mm, 4mm, 5mm, 6mm, etc., which are not exemplified herein.

Example 3:

As shown in fig. 1 to 9, on the basis of embodiment 1 or embodiment 2, embodiment 3 provides a noise reduction device 170 for a food processor 100, including: the casing 172, a plurality of chambers of making an uproar that fall are set up in the casing 172, and the casing 172 still is provided with first wind channel 174, is provided with a plurality of intercommunication portion 176 on the lateral wall of first wind channel 174, and every chamber of making an uproar that falls communicates with at least one intercommunication portion 176.

Further, as shown in fig. 12 and 13, the plurality of noise reduction cavities includes a second noise reduction cavity 184, and the second noise reduction cavity 184 is an elongated tube that communicates with the communicating portion 176.

In detail, by reasonably setting the structures of the plurality of noise reduction cavities, the plurality of noise reduction cavities include a second noise reduction cavity 184, wherein the second noise reduction cavity 184 is a wavelength tube, and the wavelength tube is communicated with the communicating portion 176. The size of the wave tube has a correlation with the target noise reduction frequency of the food processor 100. When the food processor 100 is in operation, sound waves in the first air duct 174 are transmitted into the wavelength tube through the communication portion 176, and then are transmitted out through the communication portion 176. That is, the wave length tube has only one opening, and the sound wave is transmitted into the wave length tube from the communication portion 176, a part of the sound wave is absorbed, and a part of the sound wave is transmitted from the same communication portion 176.

When the food processor 100 works, the noise frequency characteristic is kept unchanged, and the purpose of eliminating the noise corresponding to the target noise reduction frequency can be achieved because the size of the wave tube has relevance with the target noise reduction frequency of the food processor 100. By setting the wavelength tube corresponding to the target noise reduction frequency, the operation noise of the food processor 100 can be reduced with pertinence, and the noise reduction effect is good.

Specifically, the sound wave is transmitted into the wave tube through the communicating portion 176, and is reflected after reaching the bottom of the wave tube, the reflected wave and the incident wave are superimposed to form a standing wave, the node of the standing wave is located at the bottom of the wave tube, when the antinode of the standing wave is located at the communicating portion 176, resonance is generated, at this time, the particle amplitude is maximum, and the consumed sound energy is also maximum, so that the sound absorption effect is remarkable at the resonance frequency.

Specifically, the plurality of noise reduction cavities includes at least one first noise reduction cavity 178 and at least one second noise reduction cavity 184; or the plurality of noise reduction cavities includes a plurality of first noise reduction cavities 178; or the plurality of noise reduction cavities includes a plurality of second noise reduction cavities 184, with one second noise reduction cavity 184 canceling one band of noise and one first noise reduction cavity 178 canceling one band of frequency noise. That is, the number of the first noise reduction cavities 178 and the second noise reduction cavities 184 can be set according to the actual use requirement, so as to achieve the purpose of target frequency noise.

For example, broadband sound absorption is achieved using the mating relationship between the plurality of different sized first noise reduction cavities 178 and the plurality of different sized second noise reduction cavities 184.

Specifically, the first noise reduction cavity 178 includes a resonance conduit 180 and a resonance chamber 182. The first noise reduction cavity 178 belongs to a narrow band muffler. The muffling frequency of the second noise reduction cavity 184 (i.e., the wavelength tube) is related to the length of the wavelength tube, and the longer the wavelength tube, the lower the muffling frequency, and thus, the first noise reduction cavity 178 and the second noise reduction cavity 184 cooperate with each other, i.e., the muffling bandwidth can be increased, and the noise in a wide frequency range can be reduced.

Further, the sound velocity c2, the length L2 of the wavelength tube, and the target noise reduction frequency f2 of the food processor 100 satisfy:

Wherein, when cooking machine 100 works, the target noise reduction frequency characteristic is kept unchanged, and sound velocity c2, length L2 of wavelength pipe and target noise reduction frequency f2 of cooking machine 100 satisfy: that is, the sound velocity c2 and the length L2 of the wave tube have a correlation with the target noise reduction frequency f2 of the food processor 100. The length of the wave length tube is inversely related to the target noise reduction frequency. The longer the length of the wave length tube, the lower the target noise reduction frequency; the shorter the length of the wave tube, the higher the target noise reduction frequency.

Example 4:

As shown in fig. 1 to 9, on the basis of any one of the above embodiments, embodiment 4 provides a noise reduction device 170, for a food processor 100, including: the casing 172, a plurality of chambers of making an uproar that fall are set up in the casing 172, and the casing 172 still is provided with first wind channel 174, is provided with a plurality of intercommunication portion 176 on the lateral wall of first wind channel 174, and every chamber of making an uproar that falls communicates with at least one intercommunication portion 176.

Further, the target noise reduction frequencies corresponding to any two noise reduction cavities in the plurality of noise reduction cavities are different.

In detail, through reasonable arrangement of the structures of the plurality of noise reduction cavities, the target noise reduction frequencies corresponding to any two noise reduction cavities in the plurality of noise reduction cavities are different, so that noise corresponding to the plurality of target noise reduction frequencies can be subjected to noise reduction treatment by utilizing the plurality of noise reduction cavities, and effective and reliable structural support is provided for realizing broadband sound absorption.

In other embodiments, a portion of the plurality of noise reduction cavities corresponds to the same target noise reduction frequency.

Example 5:

As shown in fig. 1 to 9, on the basis of any one of the above embodiments, embodiment 5 provides a noise reduction device 170, for a food processor 100, including: the casing 172, a plurality of chambers of making an uproar that fall are set up in the casing 172, and the casing 172 still is provided with first wind channel 174, is provided with a plurality of intercommunication portion 176 on the lateral wall of first wind channel 174, and every chamber of making an uproar that falls communicates with at least one intercommunication portion 176.

Further, as shown in fig. 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 and 20, the housing 172 includes a multi-layered housing body 186, and the first air duct 174 includes a plurality of sub-air ducts, and one sub-air duct is disposed on each of the multi-layered housing bodies 186; a plurality of noise reduction cavities are defined between any two adjacent layers of housing bodies 186.

In detail, by reasonably arranging the structure of the housing 172, the housing 172 includes a plurality of housing bodies 186, and a plurality of noise reduction cavities are surrounded between any two adjacent housing bodies 186. That is, the housing 172 has a plurality of layers of regions inside, and each layer of region is provided with a plurality of noise reduction cavities, which reasonably arranges the inner space of the noise reduction device 170, increases the number of the noise reduction cavities, is beneficial to purposefully setting the structures of the plurality of noise reduction cavities according to the actual use requirement, and provides effective structural support for noise reduction of noise corresponding to a plurality of target noise reduction frequencies.

In addition, the first air duct 174 includes a plurality of sub-air ducts, one sub-air duct being provided on each of the case bodies 186. After the multi-layer shell body 186 is assembled together, any two adjacent sub-air ducts in the plurality of sub-air ducts are correspondingly connected, that is, the plurality of sub-air ducts surround the first air duct 174.

Further, as shown in fig. 10 to 20, the case body 186 includes: the partition plate 188 is provided with a through hole, and the sub air duct is positioned on the periphery side of the through hole; the coaming 192 is arranged on the baffle plate 188, and in any two adjacent layers of shell bodies 186, the coaming 192 of one shell body 186 abuts against the baffle plate 188 of the other shell body 186, and a plurality of noise reduction cavities are formed between the baffle plate 188 and the coaming 192.

In detail, the housing body 186 includes a bulkhead 188 and a shroud 192. The partition 188 is provided with a through hole, the sub-air channels are located on the periphery of the through hole, and the through hole can ensure that any two adjacent sub-air channels in the plurality of sub-air channels are communicated.

In addition, the shroud 192 is disposed on the partition 188, and in any two adjacent layers of the case bodies 186, the shroud 192 of one case body 186 abuts against the partition 188 of the other case body 186. That is, the shroud 192 and the partition 188 of any two adjacent layers of the shell bodies 186 cooperate, so that the use requirement of forming a plurality of noise reduction cavities is met, the investment of materials surrounding the noise reduction cavities is reduced, and the production cost of products is reduced. Meanwhile, the arrangement ensures the volumes of the plurality of noise reduction cavities, is beneficial to reducing the overall dimension of the noise reduction device 170, and further is beneficial to reducing the occupancy rate of the noise reduction device 170 to the internal space of the food processing machine 100, and is convenient for the reasonable layout of other components of the food processing machine 100.

It will be appreciated that in any two adjacent layers of housing bodies 186, the shroud 192 of one housing body 186 abuts the partition 188 of the other housing body 186. That is, the shroud 192 of one housing body 186 is connected to the partition 188 of the other housing body 186 to ensure the sealing requirements of the noise reduction chamber.

Further, in any two adjacent layers of the case bodies 186, the coamings 192 of one case body 186 are staggered with the coamings 192 of the other case body 186.

Wherein, through the arrangement position of the bounding wall 192 of rationally setting up adjacent two-layer shell body 186 for in the arbitrary adjacent two-layer shell body 186, the bounding wall 192 of a shell body 186, with the bounding wall 192 staggered arrangement of another shell body 186, when satisfying the user demand that forms a plurality of chambers of making an uproar that fall, be favorable to increasing the interval between two adjacent baffles in every shell body 186, like this, can reduce the processing degree of difficulty of producing shell body 186, be favorable to reducing manufacturing cost, and be favorable to prolonging the life of the mould of producing shell body 186.

Further, the noise reducer 170 also includes a seal for sealing the junction between any two adjacent shell bodies 186.

The noise reduction device 170 further includes a sealing element, where the sealing element is located at the connection between any two adjacent shell bodies 186, that is, the connection between any two adjacent shell bodies 186 is sealed by using the sealing element, so that air flow can be prevented from leaking from the connection between any two adjacent shell bodies 186, good tightness of the connection between two adjacent shell bodies 186 is ensured, so that a flow path of the air flow is defined, effective contact between a noise reduction cavity and sound waves can be ensured, and an effective and reliable structural support is provided for improving the noise reduction effect of the noise reduction device 170.

In addition, the sealing element is located at the joint of any two adjacent layers of shell bodies 186, so that the vibration reduction effect can be achieved, and in this way, hard contact between the two adjacent layers of shell bodies 186 can be avoided when the food processor 100 works, which is beneficial to reducing and further improving the noise reduction effect of the noise reduction device 170.

Further, as shown in fig. 16 to 19, the two-layered case body 186 of the outermost layer of the multi-layered case bodies 186 is denoted as a first case body 186 and a second case body 186, at least one of the first case body 186 and the second case body 186 is provided with a guide post 196, the case body 186 located between the first case body 186 and the second case body 186 is provided with a guide hole, and the guide post 196 can be inserted into the guide hole.

Wherein, through the cooperation structure of rationally setting up multilayer shell body 186 for the two-layer shell body 186 of the outermost in the multilayer shell body 186 mark as first shell body and second shell body, and make first shell body be provided with guide post 196, or make the second shell body be provided with guide post 196, or make first shell body and second shell body all be provided with guide post 196. In addition, the case body 186 between the first case body and the second case body is provided with a guide hole. In this way, the guide posts 196 can be inserted into the guide holes when the multi-layered case body 186 is assembled to complete the assembly of the multi-layered case body 186. The guide posts 196 are cooperatively coupled with the guide holes to define the relative displacement of the adjacent two-layered shell bodies 186, which ensures the mating dimension between the adjacent two-layered shell bodies 186 and thus the overall dimension of the noise reducer 170.

In addition, the guide posts 196 and the guide holes cooperate to guide the assembly of the adjacent two-sided shell bodies 186, thereby reducing the difficulty of the assembly of the adjacent two-sided shell bodies 186 and being beneficial to improving the assembly and disassembly efficiency of the multi-layer shell bodies 186.

Specifically, at least one guide post 196 is provided at each corner of the first housing body; or at least one guide post 196 is provided at each corner of the second housing body; or at least one guide post 196 is provided at each corner of the first casing body and at each corner of the second casing body. This arrangement ensures the mating dimensions of the multi-layer shell body 186.

Further, as shown in fig. 14, the partition 188 is provided with a slot 194, and the shroud 192 of one housing body 186 is inserted into the slot 194 of the other housing body 186 in any two adjacent housing bodies 186.

Wherein, through the cooperation structure of reasonable setting up the bounding wall 192 and the baffle 188 of arbitrary adjacent two-layer shell body 186 for in arbitrary adjacent two-layer shell body 186, the bounding wall 192 of one shell body 186 inserts in the slot 194 of another shell body 186. The slot 194 is capable of wrapping around the end of the shroud 192 inserted therein to facilitate the sealing of the junction of the shroud 192 and the partition 188, providing effective and reliable structural support for the flow path defining the air flow.

That is, the shroud 192 and the partition 188 of any two adjacent layers of the shell bodies 186 cooperate, so that the use requirement of forming a plurality of noise reduction cavities is met, the investment of materials surrounding the noise reduction cavities is reduced, and the production cost of products is reduced. Meanwhile, the arrangement ensures the volumes of the plurality of noise reduction cavities, is beneficial to reducing the overall dimension of the noise reduction device 170, and further is beneficial to reducing the occupancy rate of the noise reduction device 170 to the internal space of the food processing machine 100, and is convenient for the reasonable layout of other components of the food processing machine 100.

Further, as shown in fig. 7,9, 15 and 19, the outer surface of the housing 172 is provided with a water receiving groove 200 and a water leakage hole 202, and the water receiving groove 200 is communicated with the water leakage hole 202; wherein the noise reduction cavity is located at one side of the water leakage hole 202.

Wherein, through the structure of rationally setting up casing 172 for the surface of casing 172 is provided with water receiving tank 200 and hole 202 that leaks, and water receiving tank 200 is linked together with hole 202 that leaks, promptly, if the comdenstion water drops to casing 172 on, the comdenstion water can flow to hole 202 department that leaks along water receiving tank 200, then discharges noise reducer 170, has reduced the comdenstion water seepage to the emergence probability of the chamber of will making an uproar, can guarantee noise reducer 170's noise reduction effect. This arrangement enriches the functions of the noise reducer 170, and improves the usability and market competitiveness of the noise reducer 170.

In addition, the noise reduction cavity is positioned at one side of the water leakage hole 202, and the water flow discharged from the water leakage hole 202 is positioned at one side of the noise reduction cavity, so that the condensed water can be effectively prevented from flowing to the noise reduction cavity.

In this embodiment, each layer of the casing body 186 is provided with water leakage holes 202, and the water leakage holes 202 of any two adjacent layers of casing bodies 186 are correspondingly provided.

In other embodiments, the outer surface of the housing 172 is provided with the water leakage hole 202, and the housing bodies 186 of the multi-layered housing body 186, which are not provided with the water leakage hole 202, are all located at one side of the water leakage hole 202.

Further, as shown in fig. 6, 17 and 18, a wind guide groove 204 is provided at a side of the housing 172 facing away from the water receiving groove 200.

The side of the housing 172 facing away from the water receiving tank 200 is provided with an air guiding slot 204, so that the noise reducer 170 has the function of guiding the airflow to define a flow path of the airflow. This arrangement enriches the functions of the noise reducer 170, and improves the usability and market competitiveness of the noise reducer 170.

Example 6:

As shown in fig. 21, 22, 24, 25, 26 and 28, an embodiment of the second aspect of the present invention proposes a base 110 for a food processor 100, where the base 110 includes: the noise reducer 170 of any of the embodiments of the first aspect.

The base 110 provided by the present invention includes the noise reducer 170 according to any embodiment of the first aspect, so that all the advantages of the noise reducer 170 are not described herein.

Specifically, the number of noise reducers 170 is at least one.

Further, as shown in fig. 21, 22, 24 and 28, the base 110 further includes: the seat body 112, be provided with the second wind channel in the seat body 112, the seat body 112 still is provided with air intake 118 and air outlet 119, and second wind channel intercommunication air intake 118 and air outlet 119, noise reduction device 170 are located the second wind channel.

Wherein, the base 110 further comprises: the seat body 112, be provided with the second wind channel in the seat body 112, second wind channel and air intake 118 intercommunication, and the second wind channel and air outlet 119 intercommunication, i.e. second wind channel intercommunication air intake 118 and air outlet 119. The noise reducer 170 is located in the second air duct to ensure effective contact between the noise reducer 170 and the sound wave, and to provide effective structural support for noise reduction of the noise reducer 170.

Further, as shown in fig. 21, 22, 24 and 28, the base 110 further includes: the sound absorbing cotton 210 is located in the second air duct, and the sound absorbing cotton 210 is located at the periphery side of the noise reducer 170.

Wherein, the base 110 further includes sound absorbing cotton 210, and the sound absorbing cotton 210 is located the second wind channel, and the sound absorbing cotton 210 can play the effect of making an uproar falls, that is, the sound absorbing cotton 210 and the noise reduction device 170 cooperate to realize carrying out multistage noise reduction to the sound wave, be favorable to promoting the noise reduction effect of cooking machine 100.

Specifically, the food processor 100 includes a cup assembly 140, the cup assembly 140 includes a base 146, a motor 148 and fan blades 152 are disposed in the base 146, the motor 148 drives the fan blades 152 to rotate, and the base 146 is communicated with the second air duct. In operation, the motor 148 drives the fan 152 to rotate so as to suck air from the air inlet 118 of the base 110, and the air flow passes through the sound absorbing cotton 210, the motor 148 and the fan 152, flows to the noise reducer 170, and is discharged from the air outlet 119 out of the food processor 100. That is, after the air inlet 118 enters the second air duct, the noise is reduced by the sound absorbing cotton 210, and then the noise is reduced by the noise reducing device 170, so as to realize multi-stage noise reduction. The sound absorbing cotton 210 is located at the peripheral side of the noise reduction device 170, providing effective structural support for the multi-stage noise reduction process.

Further, as shown in fig. 28, the top of the seat body 112 is provided with a first opening 116, the first opening 116 is communicated with the second air duct, and the first opening 116 is used for communicating with the cup assembly 140 of the food processor 100; the bottom of the seat body 112 is provided with an air inlet 118 and an air outlet 119, at least a part of the air inlet 118 is arranged corresponding to the sound absorbing cotton 210, and at least a part of the air outlet 119 is arranged corresponding to the first air duct 174.

Wherein, by reasonably setting the structure of the seat body 112, the seat body 112 is provided with a first opening 116, an air inlet 118 and an air outlet 119. Specifically, the top of the seat body 112 is provided with a first opening 116, and the bottom of the seat body 112 is provided with an air inlet 118 and an air outlet 119.

The cup assembly 140 of the food processor 100 is detachably disposed at the top of the base 110, and the first opening 116 is disposed at the top of the base body 112, so that the air flow entering the second air duct from the air inlet 118 can flow to the motor 148 of the cup assembly 140 from the first opening 116, that is, the smoothness of the air flow path is ensured.

In addition, the bottom of the seat body 112 is provided with the air inlet 118 and the air outlet 119, so that the air flow smoothness is ensured, the air inlet 118 and the air outlet 119 are hidden, the air inlet 118 and the air outlet 119 are prevented from being exposed, and the appearance of a product is improved.

In addition, at least a portion of the air inlet 118 is disposed corresponding to the sound absorbing cotton 210, so that the air flow entering through the air inlet 118 needs to flow through the sound absorbing cotton 210, so as to ensure effective contact between the sound absorbing cotton 210 and the air flow, and further ensure the noise reduction effect of the sound absorbing cotton 210.

In addition, at least a portion of the air outlet 119 is disposed corresponding to the first air duct 174, so that the air flow can be ensured to flow to the air outlet 119 after the noise reduction treatment of the noise reduction device 170, so as to ensure the noise reduction effect of the noise reduction device 170.

Example 7:

As shown in fig. 21 to 27, an embodiment of a third aspect of the present invention proposes a food processor 100 including: such as the base 110 of the second aspect embodiment.

The food processor 100 provided by the present invention includes the base 110 as in the second embodiment, so that all the advantages of the base 110 are not described herein.

Further, as shown in fig. 21, 22 and 24, the food processor 100 further includes: the cup assembly 140, the cup assembly 140 is removably connected with the base 110.

Wherein, the food processor 100 further includes a cup assembly 140, the cup assembly 140 is detachably connected to the base 110, and the cup assembly 140 is used for holding food materials and has the function of cooking the food materials (such as crushing the food materials, heating the food materials, etc.). The cup assembly 140 is detachably connected with the base 110, the base 110 has the function of supporting and fixing the cup assembly 140, the cup assembly 140 can be assembled with the base 110, and the cup assembly 140 can be separated from the base 110.

Further, as shown in fig. 21, 22 and 24, the cup assembly 140 includes: a cup 142; a crushing blade 144 positioned in the cup 142; the base 146 is connected with the cup 142, and the base 146 is provided with a second opening; a motor 148 positioned within the housing 146, the motor 148 including a drive shaft 150, a first end of the drive shaft 150 extending into the cup 142 and being coupled to the shredding knife 144; the fan blade 152 is positioned in the seat 146, and the second end of the driving shaft 150 is connected with the fan blade 152; wherein the first opening 116 of the base 110 communicates with the second opening.

The cup assembly 140 includes a cup 142, a shredder blade 144, a base 146, a motor 148, and fan blades 152. Wherein, the base 146 is provided with a second opening, and the second opening is in communication with the first opening 116, that is, the base 146 is in communication with the second air duct of the base 110.

Specifically, the cup assembly 140 includes a base 146, a motor 148 and fan blades 152 are disposed in the base 146, and the motor 148 drives the crushing blade 144 to rotate and simultaneously drives the fan blades 152 to rotate. In operation, the motor 148 drives the fan 152 to rotate, so as to suck air from the air inlet 118 of the base 110, the air flow passes through the sound absorbing cotton 210, flows from the first opening 116 to the second opening, flows through the motor 148 and the fan 152, flows from the second opening to the first opening 116, flows to the noise reducer 170, and is discharged from the air outlet 119 out of the food processor 100. This arrangement ensures effective contact of the air flow with the motor 148 and the fan blades 152 to dissipate heat from the motor 148 and the fan using cool air from the outside, ensures the operating temperature of the motor 148, and provides structural support for extending the service life of the motor 148.

It will be appreciated that the motor 148 rotates at a high speed to generate rotational power, and that heat is generated during operation of the motor 148, such that the drive shaft 150 of the motor 148 is coupled to the fan 152, and the fan 152 is utilized to dissipate heat from the motor 148. When the motor 148 is operated and drives the fan blades 152 to rotate, vibration noise and wind resistance turbulence noise are generated, that is, the main noise sources of the food processor 100 include the motor 148 and the fan blades 152. The noise reduction process is performed using the sound absorbing cotton 210 and the noise reduction device 170.

Example 8:

As shown in fig. 21 to 27, on the basis of embodiment 7, embodiment 8 provides a food processor 100 including: such as the base 110 of the second aspect embodiment.

Further, as shown in fig. 21 to 27, the food processor 100 further includes a cover assembly 120, the cover assembly 120 is detachably connected to the base 110, a housing cavity 130 is defined between the base 110 and the cover assembly 120, a cup assembly 140 is located in the housing cavity 130, and the cup assembly 140 is detachably connected to the base 110.

Wherein, by enclosing the accommodating cavity 130 between the base 110 and the cover assembly 120, the cup assembly 140 is located in the accommodating cavity 130, and the base 110 and the cover assembly 120 wrap the cup assembly 140. That is, the base 110 and the cover assembly 120 cooperate to isolate the cup assembly 140 from the outside. Thus, the outward transmission quantity of noise generated during the operation of the food processor 100 can be effectively reduced, and the noise reduction effect of the product can be improved. In addition, the base 110 and the cover assembly 120 also have the functions of heat preservation and heat insulation for food materials in the cup assembly 140, so that the situation of scalding a user is avoided, and the use safety and the reliability of the product are improved.

Specifically, the base 110 is detachably connected to the cover assembly 120, and the cup assembly 140 is detachably connected to the base 110.

When the food processor 100 is assembled, the cup assembly 140 is placed on the base 110, and then the cover assembly 120 is covered on the outer side of the cup assembly 140 and assembled with the base 110.

When the food processor 100 is disassembled, the cover assembly 120 is removed from the base 110, and then the cup assembly 140 is separated from the base 110.

Further, there is a gap between the cup assembly 140 and the chamber wall of the receiving chamber 130.

By reasonably arranging the matching structure of the cup body assembly 140 and the accommodating cavity 130, a gap is formed between the cup body assembly 140 and the cavity wall of the accommodating cavity 130, namely, the cup body assembly 140 is separated from the cavity wall of the accommodating cavity 130. This arrangement can reduce the outward transmission of noise generated by the cup assembly 140 during operation of the food processor 100, thereby facilitating the improvement of the noise reduction effect of the product. In addition, the gap between the cup body assembly 140 and the cavity wall of the accommodating cavity 130 also has the functions of heat preservation and heat insulation for food materials in the cup body assembly 140, so that the situation of scalding a user is avoided, and the use safety and reliability of products are improved.

Further, as shown in fig. 21, 22 and 24, the cover assembly 120 includes: a cover 122 detachably connected to the base 110, the cover 122 having an opening; the first sub-cover 220 is detachably connected to the housing 122, and the first sub-cover 220 is used for opening or closing the opening.

Further, as shown in fig. 27, 29 and 30, the first sub-cover 220 is provided with a channel 222 and a first chamber 224, the first sub-cover 220 is further provided with a first air inlet 226 and an air outlet 228, and the channel 222 communicates with the first air inlet 226 and the air outlet 228; the wall surface of the channel 222 is provided with a communication structure 230, and the first chamber 224 is communicated with the communication structure 230; wherein the flow cross-sectional area of the passage 222 is smaller than the flow cross-sectional area of the first chamber 224.

Wherein the first sub-cover 220 is provided with a channel 222 and a first chamber 224, the first sub-cover 220 is further provided with a first air inlet 226 and an air outlet 228, the channel 222 is in communication with the first air inlet 226, and the channel 222 is in communication with the air outlet 228, i.e. the channel 222 is in communication with the first air inlet 226 and the air outlet 228. The hot air generated during operation of the cup assembly 140 can be exhausted out of the first sub-lid 220 through the channel 222, thereby providing structural support for the safety and reliability of the operation of the food processor 100.

In addition, a communication structure 230 is provided on a wall surface of the passage 222, and the first chamber 224 communicates with the communication structure 230. Through the cooperation structure of reasonable setting passageway 222 and first cavity 224 for the cross-sectional area that overflows of passageway 222 is less than the cross-sectional area that overflows of first cavity 224, promptly passageway 222 and first cavity 224 constitute resonant cavity structure jointly, when the sound wave passes to resonant cavity 182, the resonance of resonant cavity structure is aroused to the part that is close with the natural frequency of resonant cavity structure in the sound wave, in the vibration process, the sound wave in the resonant cavity structure rubs with the inner wall of passageway 222 and first cavity 224, converts mechanical energy into heat energy, thereby consume the acoustic energy, can effectively reach the effect of sound absorption and noise reduction.

In addition, the cross-sectional area of the channel 222 is smaller than that of the first chamber 224, that is, the matching structure of the channel 222 and the first chamber 224 is reasonably arranged, which is favorable for coupling the sound wave with the channel 222 and the first chamber 224, so that the noise reduction effect of the cover body can be ensured.

It can be appreciated that the sound wave generated during the operation of the food processor 100 propagates to the communication structure 230 through the channel 222, then propagates to the first chamber 224 through the communication structure 230, enters the first chamber 224, and then propagates to the channel 222 through the communication structure 230. That is, for the first chamber 224, the inlet and the outlet of the first chamber 224 are the same structure (i.e., the communication structure 230), and the sound wave is transmitted from the communication structure 230 into the first chamber 224 and then transmitted from the communication structure 230.

This setting makes the lid neither can block the discharge of steam, can reduce the outward transfer volume of the produced noise of cooking machine 100 during operation again, is favorable to promoting the noise reduction effect of cooking machine 100, has richened the service function of lid, has promoted the performance and the market competition of product.

Further, the flow cross-sectional area S3 of the communication structure 230, the volume V3 of the first chamber 224, the length L3 of the channel 222, the sound velocity c3, and the target noise reduction frequency f3 of the food processor 100 satisfy:

when the food processor 100 works, the target noise reduction frequency characteristic is kept unchanged, and the overflow cross-sectional area S3 of the communication structure 230, the volume V3 of the first chamber 224, the length L3 of the channel 222 and the sound velocity c3 are all associated with the target noise reduction frequency f3 of the food processor 100. That is, the size of the first sub-cover 220 is adapted to the sizes of the outer cover 122 and the cup assembly 140 while securing the noise reduction effect of the first sub-cover 220.

Further, the number of first chambers 224 is plural, and the plural first chambers 224 are arranged at intervals along the circumference of the passage 222.

The number of the first chambers 224 is plural, so that the structures of the first chambers 224 can be set in a targeted manner according to the target noise reduction frequency, for example, the first chambers 224 with plural specifications are set for plural different frequencies, for example, the first chambers 224 with the same specification are set for the same frequency, thereby being beneficial to realizing broadband sound absorption and noise reduction, meeting the diversified use demands of users, and being beneficial to improving the use performance and market competitiveness of the product.

In addition, a plurality of first chambers 224 are spaced apart along the circumference of the channel 222. In this way, the configuration of the channels 222 may be reasonably utilized, providing effective and reliable structural support for the mating dimensions of the communication structure 230 and the plurality of first chambers 224.

Specifically, any two first chambers 224 of the plurality of first chambers 224 are different in specification.

Specifically, the number of communication structures 230 is plural, and each first chamber 224 communicates with at least one communication structure 230.

Specifically, the number of channels 222 is plural, and each first chamber 224 communicates with the communication structure 230 of at least one channel 222.

Further, as shown in fig. 21, 22, 24 and 31, the food processor 100 further includes: a second sub-cap 240 detachably coupled to the first sub-cap 220, the second sub-cap 240 for opening or closing the open end of the cup assembly 140; the second sub-cover 240 is provided with a second air inlet 242, and a second chamber 244 is defined between the first sub-cover 220 and the second sub-cover 240; wherein the cross-sectional area of the first air inlet 226 and the cross-sectional area of the second air inlet 242 are both smaller than the cross-sectional area of the second chamber 244.

Wherein, cooking machine 100 further includes: the second sub-cover 240, the second sub-cover 240 is detachably connected with the first sub-cover 220, and a second chamber 244 is enclosed between the first sub-cover 220 and the second sub-cover 240, and the second chamber 244 is communicated with the first air inlet 226 and the second air inlet 242. The hot air generated during operation of the food processing machine 100 enters the second chamber 244 through the second air inlet 242, flows to the channel 222 through the first air inlet 226, and is discharged from the channel 222. That is, the hot air passes through the second chamber 244 and then flows to the passage 222, which provides structural support for the safety and reliability of the operation of the food processor 100.

In addition, by reasonably setting the matching structures of the first air inlet 226, the second air inlet 242 and the second chamber 244, the cross-sectional area of the first air inlet 226 and the cross-sectional area of the second air inlet 242 are smaller than the cross-sectional area of the second chamber 244, which is equivalent to that sound waves enter the second chamber 244 with a larger volume from a region with a smaller volume (for example, the region surrounded by the mouth wall of the second air inlet 242), and then are discharged from a region with a smaller volume (for example, the region surrounded by the mouth wall of the first air inlet 226), so that the acoustic impedance adaptation is realized, and the sound waves are reflected and interfered at the mouth wall of the first air inlet 226, the mouth wall of the second chamber 244 and the mouth wall of the second air inlet 242, so that the sound energy can be consumed, and the sound absorption and noise reduction effects can be effectively achieved.

The second air inlet 242, the second chamber 244 and the first air inlet 226 cooperate to effect a first noise reduction of the sound waves, and the passage 222, the communication structure 230 and the first chamber 224 cooperate to effect a second noise reduction of the sound waves. That is, the sound waves flow through the second sub-cover 240 and the first sub-cover 220, and the second sub-cover 240 and the first sub-cover 220 can perform multi-stage noise reduction treatment on the sound waves, which is beneficial to improving the noise reduction effect of the food processor 100.

Specifically, the distance L4 between the first sub-cover 220 and the second sub-cover 240, the sound velocity c4, and the target noise reduction frequency f4 of the food processor 100 satisfy: n is a natural number.

When the food processor 100 works, the target noise reduction frequency characteristic is kept unchanged, and the distance L4 between the first sub-cover 220 and the second sub-cover 240 and the sound velocity c4 are associated with the target noise reduction frequency f4 of the food processor 100. That is, while securing the noise reduction effect of the first and second sub-caps 220 and 240, the sizes of the first and second sub-caps 220 and 240 are adapted to the sizes of the outer cover 122 and the cup assembly 140 of the food processor 100.

Specifically, n includes 0, 1,2, 3, 4,5, etc., which are not listed herein.

Further, as shown in fig. 29, the first sub-cover 220 includes: a first sub-housing 232, the first sub-housing 232 being provided with a first air inlet 226; a second sub-housing 234 detachably connected to the first sub-housing 232, the second sub-housing 234 being provided with an air outlet 228, the first sub-housing 232 and the second sub-housing 234 enclosing the first chamber 224; wherein one of the first sub-housing 232 and the second sub-housing 234 is provided with the passage 222. That is, the first sub-housing 232 and the second sub-housing 234 cooperate to reduce the investment of materials surrounding the first chamber 224 while meeting the use requirements of forming the first chamber 224, which is beneficial to reducing the production cost of the product. The first sub-housing 232 and the second sub-housing 234 are detachably connected, so that the interior of the first sub-cover 220 is convenient to clean, and the sanitation and safety of the cover body can be ensured.

Wherein, one of the first sub-housing 232 and the second sub-housing 234 is provided with a channel 222, that is, one of the first sub-housing 232 and the second sub-housing 234 is used for supporting and fixing the channel 222, so as to ensure the matching structure of the channel 222 and the first chamber 224, and further ensure the effectiveness and feasibility of the communication between the communication structure 230 and the first chamber 224.

Specifically, the communication structure 230 includes at least one of a communication hole and a communication groove.

Specifically, at least a portion of the first air inlet 226 is disposed in correspondence with the air outlet 228.

Further, as shown in fig. 30, the first sub-cover 220 further includes a cover plate 236, the cover plate 236 is located on a side of the first sub-shell 232 facing away from the second sub-shell 234, the cover plate 236 is provided with an avoidance gap, and the air outlet 228 is disposed corresponding to the avoidance gap. The cover 236 has a decorative effect to ensure the aesthetic and fluency of the cover appearance.

In addition, the cover plate 236 is provided with an avoidance vacancy, the air outlet 228 is correspondingly arranged with the avoidance vacancy, the avoidance vacancy plays a role in avoiding the air outlet 228, and the hot air of the air outlet 228 can be smoothly discharged out of the cover body through the avoidance vacancy.

It is understood that the relief void includes at least one of a relief hole and a relief notch.

Further, as shown in fig. 29, a first peripheral edge 238 is provided in the other of the first sub-housing 232 and the second sub-housing 234, and the end of the passage 222 extends into the first peripheral edge 238. When the first sub-shell 232 and the second sub-shell 234 are mated, the end of the channel 222 extends into the first peripheral edge 238, and the first peripheral edge 238 can limit the movement of the channel 222, so as to ensure the mating structure of the first sub-shell 232, the second sub-shell 234 and the channel 222, and further ensure the effective mating of the channel 222 and the first chamber 224. In addition, since the end of the channel 222 extends into the first peripheral edge 238, the tightness of the connection between the channel 222 and the shroud 192 is ensured to define the airflow path, and an effective and reliable structural support is provided for the noise reduction function of the cover.

Specifically, the first sub-shell 232 is provided with a first peripheral edge 238, the first peripheral edge 238 is located at a peripheral side of the first air inlet 226, the second sub-shell 234 is provided with a channel 222, and a free end of the channel 222 can extend into the first peripheral edge 238.

Specifically, the second sub-housing 234 is provided with a first peripheral edge 238, the first peripheral edge 238 is located at a peripheral side of the air outlet 228, the first sub-housing 232 is provided with a channel 222, and a free end of the channel 222 can extend into the first peripheral edge 238.

Further, as shown in fig. 29, the food processor 100 further includes a first sealing part 270 for sealing the junction of the first sub-housing 232 and the second sub-housing 234.

Further, as shown in fig. 31, the outer surface of the second sub-cover 240 is provided with a second surrounding edge 246, the second surrounding edge 246 is located at the peripheral side of the second air inlet 242, a part of the first sub-cover 220 extends into the second surrounding edge 246, and a part of the first sub-cover 220 located in the second surrounding edge 246 is provided with the first air inlet 226. This arrangement increases the fitting area and fitting angle of the junction of the first sub-cover 220 and the second sub-cover 240, which is advantageous in ensuring tightness of the junction of the first sub-cover 220 and the second sub-cover 240 to define a flow path of the air flow.

In addition, the portion of the first sub-cover 220 located within the second peripheral edge 246 is provided with the first air inlet 226, which provides effective structural support for the communication of the first air inlet 226 with the second air inlet 242 while ensuring the tightness of the connection of the first sub-cover 220 and the second sub-cover 240.

Further, as shown in fig. 22 and 23, the food processor 100 further includes a second sealing portion 250, where the second sealing portion 250 is used to seal the connection between the first sub-cover 220 and the second peripheral edge 246. This arrangement can avoid the situation that the air flow leaks from the junction of the first sub-cover 220 and the second surrounding edge 246, ensure good tightness of the junction of the first sub-cover 220 and the second surrounding edge 246, thereby defining the flow path of the air flow, further ensure effective contact between the second chamber 244 and the first chamber 224 and the sound wave, and be beneficial to improving the noise reduction effect. In addition, the second sealing portion 250 can avoid hard contact between the first sub-cover 220 and the second peripheral edge 246, which is beneficial to reducing noise reduction effect of the housing 172.

Wherein the second sealing portion 250 comprises a sealing ring. A sealing ring is disposed at the connection between the first sub-cover 220 and the second peripheral edge 246. Further, the sealing ring is a rubber piece.

Further, as shown in fig. 22 and 23, the food processor 100 further includes: the third sealing part 260, the third sealing part 260 is used for sealing the connection part of the outer cover 122 and the first sub-cover 220 and the second sub-cover 240.

The food processor 100 further includes a third sealing portion 260, where the third sealing portion 260 is located at a connection portion between the outer cover 122 and the first sub-cover 220 and the second sub-cover 240, so that the connection portion between the outer cover 122 and the first sub-cover 220 and the second sub-cover 240 is sealed by the third sealing portion 260.

This arrangement can avoid the situation that the air flow leaks from the junction of the outer cover 122 and the first and second sub-covers 220 and 240, ensure good tightness of the junction of the outer cover 122 and the first and second sub-covers 220 and 240, and thereby define the flow path of the air flow, which is beneficial to improving the noise reduction effect of the food processor 100.

In addition, the third sealing part 260 is located at the connection part between the outer cover 122 and the first sub-cover 220 and the second sub-cover 240, and can play a role in vibration reduction, so that the hard contact between the outer cover 122 and the first sub-cover 220 and the second sub-cover 240 can be avoided when the food processor 100 works, and the noise reduction effect of the food processor 100 can be further improved.

Specifically, the third sealing portion 260 is a sealing ring. Sealing rings are arranged at the joints of the outer cover 122, the first sub-cover 220 and the second sub-cover 240. Further, the sealing ring is a rubber piece.

Specifically, the food processor 100 includes a wall breaking machine, a soymilk machine, a juice extractor, a juice machine, etc., which are not exemplified herein.

Example 9:

As shown in fig. 21, 22 and 24, the food processor 100 includes a first sub-cover 220, a second sub-cover 240, an outer cover 122, a cup assembly 140 and a base 110. Wherein the cup assembly 140 is located inside the housing 122. Wherein the first sub-cover 220, the outer cover 122, and the base 110 are integrally formed to wrap the sound source generating cup assembly 140.

The outer cover 122 serves to isolate the internal sound source from direct radiation to the outside, and to reduce whipping noise and noise in the cup 142 while adding the first sub-cover 220 for venting because venting is not needed to be sealed.

As shown in fig. 21, 22 and 24, a noise reducer 170 is provided in the base 110. The upper portion of the noise reducer 170 communicates with the second opening of the housing 146 of the cup assembly 140. The noise reducer 170 is provided with a first air duct 174, so that sound waves in the motor 148, the fan blades 152 and the housing 122 enter the noise reducer 170 through the first air duct 174 as much as possible, and noise elimination is achieved.

As shown in fig. 1-19, the noise reducer 170 includes a first air duct 174 and a plurality of noise reduction cavities of different sizes.

The plurality of noise reduction cavities includes at least one first noise reduction cavity 178, the first noise reduction cavity 178 including a resonance conduit 180 and a resonance chamber 182, and noise of a specific frequency is eliminated using the resonance conduit 180 and the resonance chamber 182.

As shown in fig. 11, a schematic upper cross-sectional view of the noise reducer 170; as shown in fig. 12, an intermediate layer cross-sectional view of the noise reducer 170; as shown in fig. 13, a cross-sectional view of the bottom layer of the noise reducer 170. The middle layer, in cross-section, is similar to the upper and lower layers, and includes a first noise reduction cavity 178.

In addition, the middle and bottom layers further include a second noise reduction cavity 184, i.e., a wavelength tube, which eliminates noise of different frequencies, with different lengths, the longer the wavelength tube, the lower the frequency of noise reduction, the larger the cross-sectional area of the wavelength tube, and the greater the amount of noise reduction.

The principle that one wavelength tube eliminates one frequency band noise and one resonant cavity eliminates one section of frequency noise is utilized for structural design and matching.

Specifically, the noise reducer 170 and the sound absorbing cotton 210 are disposed in the base 110. Wherein the thickness of the sound absorbing cotton 210 is greater than 10mm.

Specifically, the interval between the first housing 172 and the second housing 172 of the first sub-cover 220 is 8mm or more, such as 9mm, 10mm, 11mm, 12mm, etc., which is not exemplified herein.

Specifically, the flow cross-sectional area of the passage 222 tapers or abruptly changes in the direction from the first air inlet 226 to the air outlet 228.

Specifically, the flow-through cross-sectional shape of the communication structure 230 includes any one or a combination of the following: oval, polygonal and shaped. Wherein, the special-shaped refers to an irregularly shaped graph.

Specifically, the maximum value of the line connecting any two points on the wall of the air outlet 228 is 20mm or less, for example, 18mm, 16mm, 15mm, 14mm, 13mm, etc., which are not exemplified herein.

Specifically, the bulk density of the outer cover 122 is greater than 1000 kilograms per cubic meter and the thickness of the outer cover 122 is greater than 3mm. That is, the areal density of the outer cover 122 is required to be greater than 3 kilograms per square meter.

The cup 142 and the components in contact with each other are all mounted for vibration damping, and the housing 122 and the components in contact with each other are also mounted for vibration damping.

An annular vibration damping soft rubber (referred to as a first sealing member) is arranged between the outer cover 122 and the base 110, and the section is L-shaped, so that the vibration damping can be realized while sealing.

The bottom of the cup assembly 140 is provided with a vibration damping member and/or a large vibration damping member is designed on the base 110 to achieve vibration damping fit between the cup 142 and the base 110.

The bottom of the base 110 is provided with an air inlet 118, and the air inlet 118 ensures that external cold air enters, so that good heat dissipation is realized. Meanwhile, the air inlet 118 is more beneficial to the sound absorption cotton 210 and the noise reduction device 170 which are used for sound waves entering the bottom through the base 110, so that more effective noise reduction is realized.

Specifically, as shown in fig. 32, as shown in a data graph of the sound attenuation amount of the food processor (the base of the food processor is not provided with the noise attenuation structure) and the food processor 100 (the base 110 of the food processor 100 is provided with the noise attenuation device 170) in the related art, the noise attenuation device 170 in the application has a better noise attenuation effect in a wider frequency range, thereby improving the noise attenuation effect of the whole machine and realizing broadband sound absorption and noise attenuation.

Specifically, the height of the wavelength tube is 3mm or more, such as 4mm, 5mm, 6mm, 8mm, etc., in the height direction of the food processor 100, which is not specifically exemplified herein.

Specifically, the height of the wavelength tube is 3mm or more, such as 4mm, 5mm, 6mm, 8mm, etc., in the height direction of the noise reducer 170, which is not specifically exemplified herein.

Specifically, the height of the resonance chamber 182 is 3mm or more, such as 4mm, 5mm, 6mm, 8mm, etc., in the height direction of the noise reducer 170, which is not specifically exemplified herein.

Specifically, the length of the resonance tube 180 is 2mm or more, for example, 3mm, 4mm, 5mm, 6mm, 8mm, etc., which are not exemplified herein.

Specifically, the number of the shell bodies 186 is M, and N layers of spaces are provided in the noise reducer 170, and each layer of space includes a plurality of noise reduction cavities, where n=m-1.

In the present invention, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a device of making an uproar falls for cooking machine, its characterized in that includes:

The device comprises a shell, wherein a plurality of noise reduction cavities are arranged in the shell, the shell is further provided with a first air duct, a plurality of communication parts are arranged on the side wall of the first air duct, and each noise reduction cavity is communicated with at least one communication part;

The shell comprises a multi-layer shell body, the first air duct comprises a plurality of sub air ducts, and each layer of the shell body is provided with one sub air duct;

And a plurality of noise reduction cavities are surrounded between any two adjacent layers of shell bodies.

2. The noise reduction device of claim 1, wherein,

The plurality of noise reduction cavities are positioned on the periphery side of the first air duct.

3. Noise reduction device according to claim 1 or 2, characterized in that,

The plurality of noise reduction cavities comprise a first noise reduction cavity, the first noise reduction cavity comprises a resonance pipeline and a resonance cavity, and the resonance pipeline is communicated with the resonance cavity and the communication part;

Wherein the cross-sectional area of the resonant duct is less than the cross-sectional area of the resonant chamber.

4. A noise reducing device as defined in claim 3, wherein,

The overflow cross-sectional area S1 of the resonance pipeline, the volume V1 of the resonance chamber, the length L1 of the resonance pipeline, the sound velocity c1 and the target noise reduction frequency f1 of the food processor meet the following conditions:L1≥2mm。

5. Noise reduction device according to claim 1 or 2, characterized in that,

The plurality of noise reduction cavities comprise a second noise reduction cavity, the second noise reduction cavity is a wavelength tube, and the wavelength tube is communicated with the communication part.

6. The noise reducer of claim 5, wherein,

Sound velocity c2, length L2 of wavelength pipe and target noise reduction frequency f2 of cooking machine satisfy:

7. noise reduction device according to claim 1 or 2, characterized in that,

Any two of the plurality of noise reduction cavities have different target noise reduction frequencies corresponding to the noise reduction cavities.

8. The noise reducer according to claim 1 or 2, wherein the shell body includes:

the separation plate is provided with a through hole, and the sub-air duct is positioned on the periphery side of the through hole;

The coaming is arranged on the baffle plate, two layers of the coaming are arranged in any adjacent layers in the shell body, one coaming of the shell body abuts against the baffle plate of the other shell body, and a plurality of noise reduction cavities are formed between the baffle plate and the coaming in a surrounding mode.

9. The noise reducer of claim 8, wherein,

In any two adjacent layers of shell bodies, the coaming of one shell body is staggered with the coaming of the other shell body; and/or

The noise reduction device also comprises a sealing piece, wherein the sealing piece is used for sealing the joint of any two adjacent shell bodies.

10. The noise reducer of claim 8, wherein,

The baffle is provided with a slot, and in any two adjacent layers of shell bodies, the coaming of one shell body is inserted into the slot of the other shell body.

11. Noise reduction device according to claim 1 or 2, characterized in that,

The two-layer shell body of the outermost layer in the multi-layer shell body is recorded as a first shell body and a second shell body, at least one of the first shell body and the second shell body is provided with a guide post, the shell body between the first shell body and the second shell body is provided with a guide hole, and the guide post can be inserted into the guide hole.

12. Noise reduction device according to claim 1 or 2, characterized in that,

The outer surface of the shell is provided with a water receiving tank and a water leakage hole, and the water receiving tank is communicated with the water leakage hole;

the noise reduction cavity is located at one side of the water leakage hole.

13. The noise reducer of claim 12, wherein,

One side of the shell, which is away from the water receiving groove, is provided with an air guide groove.

14. A base for cooking machine, its characterized in that includes:

the noise reducer of any of claims 1-13.

15. The base of claim 14, further comprising:

The seat body, be provided with the second wind channel in the seat body, the seat body still is provided with air intake and air outlet, the second wind channel intercommunication the air intake with the air outlet, noise reduction device is located in the second wind channel.

16. The base of claim 15, further comprising:

the sound absorbing cotton is positioned in the second air duct, and the sound absorbing cotton is positioned on the periphery side of the noise reduction device.

17. The base of claim 16, wherein the base is configured to receive the base,

The top of the seat body is provided with a first opening, the first opening is communicated with the second air duct, and the first opening is used for being communicated with a cup body assembly of the food processor;

The bottom of seat body is provided with the air intake with the air outlet, at least a portion of air intake with inhale the sound cotton and correspond the setting, at least a portion of air outlet with first wind channel corresponds the setting.

18. A cooking machine, characterized by comprising:

a base as claimed in any one of claims 14 to 17.

19. The food processor of claim 18, further comprising:

The cup body assembly is detachably connected with the base.

20. The food processor of claim 19, wherein the cup assembly comprises:

a cup body;

The crushing knife is positioned in the cup body;

the base body is connected with the cup body and is provided with a second opening;

The motor is positioned in the seat body and comprises a driving shaft, and the first end of the driving shaft extends into the cup body and is connected with the crushing cutter;

The fan blade is positioned in the seat body, and the second end of the driving shaft is connected with the fan blade;

Wherein the first opening of the base is communicated with the second opening.