CN113531986A

CN113531986A - Refrigerator with a door

Info

Publication number: CN113531986A
Application number: CN202010305798.6A
Authority: CN
Inventors: 刘铁伟; 杨春
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2021-10-22
Also published as: WO2021208429A1

Abstract

The invention provides a refrigerator, which comprises a low-temperature storage chamber, a low-pressure storage unit, a vacuum pump and an air leakage prevention unit, wherein the low-pressure storage unit, the vacuum pump and the air leakage prevention unit are positioned in the low-temperature storage chamber; a partition plate provided with an assembly hole and a vent hole is arranged at the butt joint of two adjacent pipe sections; a floating column capable of moving along the central shaft of the assembly hole is arranged in the assembly hole; one end of the floating column is provided with a baffle pad positioned at one side of the partition board close to the vacuum pump, wherein the vent hole on the partition board is positioned in the overlapped area of the baffle pad and the partition board; the invention can open the vent hole when the vacuum pump exhausts air and close the vent hole when the air exhaust is finished, thereby effectively avoiding the air leakage of the low-pressure storage unit caused by the air entering the low-pressure storage unit through the vacuum pump after the air exhaust is finished.

Description

Refrigerator with a door

Technical Field

The invention belongs to the technical field of refrigerators, and particularly relates to a refrigerator.

Background

Refrigerators occupy an important share of the market as indispensable electric appliances in home life. With the increasing requirements of consumers on the quality of fresh food, the requirements on refrigerators are also increasing, and refrigerators are required to have higher configuration and stronger functions, and especially, it is desirable that the stored fresh food can have a longer storage period, so that the freshness of food materials is ensured, and the loss of nutritional ingredients is prevented.

In order to better store the food, it has been developed to provide a vacuum chamber in the refrigerator, and the vacuum chamber is vacuumized by a vacuuming device. The main function of the vacuum is to remove oxygen from the vacuum chamber to prevent food from deteriorating. When the vacuum chamber is in a negative pressure state, gas is sucked back into the gas inlet through the gas outlet of the vacuum pump, and the gas is discharged into the vacuum chamber, so that gas leakage of the vacuum chamber is caused.

The invention is provided in view of the above.

Disclosure of Invention

The invention provides a refrigerator aiming at the technical problems.

In order to achieve the purpose, the invention adopts the technical scheme that:

a refrigerator, comprising:

the low-temperature storage compartment is surrounded by the inner container;

the low-pressure storage unit is positioned in the low-temperature storage room and can be pumped to form air pressure lower than the external atmospheric pressure of the refrigerator so as to be beneficial to the fresh keeping of food;

the vacuum pump is communicated with the low-pressure storage unit and is used for pumping out air in the low-pressure storage unit;

leak protection gas unit, it includes:

the anti-leakage air pipe comprises a plurality of pipe sections which are sequentially connected and communicated; one end of the anti-leakage air pipe is communicated with the low-pressure storage unit, and the other end of the anti-leakage air pipe is communicated with the vacuum pump;

the partition plate is arranged at the butt joint of two adjacent pipe sections; the partition plate is provided with an assembly hole and a vent hole;

the floating column is arranged in the assembly hole and can move along the central shaft of the assembly hole;

the baffle pad is arranged at one end of the floating column and is positioned at one side of the partition board close to the vacuum pump; the baffle pad is matched with the clapboard to open or close the vent hole;

when the low-pressure storage unit is used for exhausting air, the blocking pad drives the floating column to move towards the direction close to the vacuum pump under the action of air pressure, the blocking pad is separated from the partition plate, and the vent hole is opened; the air of the low-pressure storage unit sequentially enters the vacuum pump through the plurality of vent holes;

when the low-pressure storage unit stops pumping air, the baffle pad is in sealing fit with the partition plate under the action of air pressure, and the vent hole is closed.

Preferably, partial region forms the card post along its radial protrusion on the floating column, card post with keep off and form between the pad and hold the holding tank of baffle.

Preferably, under the condition that the floating column is not affected by external force, the width of the accommodating groove is larger than the thickness of the partition plate.

Preferably, two floating pieces are arranged in the anti-leakage air pipe.

Preferably, the ventilation holes are distributed around the assembly hole.

Preferably, the float member is of a rubber material.

Preferably, the clapboard and the air leakage prevention pipe are made of ABS plastic.

Preferably, the partition plate and the anti-leakage air pipe are welded and connected into a whole through a hot melting process.

Preferably, a pump shell is sleeved outside the vacuum pump, and the pump shell is fixedly connected to the inner container through a first fixing piece and a second fixing piece which are respectively positioned on the inner side and the outer side of the inner container; wherein, the inner container is provided with a mounting hole;

the first fixing piece is accommodated at one side of the inner container and is fixed with the pump shell; the first fixing piece is provided with a fixing through hole;

the second fixing piece is accommodated at the other side of the inner container and comprises a stopping part and a fixing clamping hook which are connected;

wherein the stopping part is stopped by the inner container;

the fixing clamping hook penetrates through the mounting hole in the inner container and the fixing through hole in the first fixing piece and is clamped with the first fixing piece.

Preferably, the pump shell is provided with a connecting plate, and the end part of the connecting plate, which is far away from the central shaft of the pump shell, is provided with an installation notch;

the first fixing piece comprises a fixing column arranged in an installation notch on the pump shell and fixing plates arranged at two end parts of the fixing column; and an installation groove for accommodating the pump shell upper connecting plate is formed between the fixing plates arranged at the two end parts of the fixing column.

Compared with the prior art, the invention has the advantages and positive effects that:

Drawings

FIG. 1 is a schematic view of the overall structure of a refrigerator according to the present invention;

FIG. 2 is a schematic view of a portion of the refrigerator according to the present invention;

FIG. 3 is a schematic diagram of the relative position structure of the drain pipe and the inner container of the refrigerator of the present invention;

FIG. 4 is a schematic diagram illustrating the relative positions of the vacuum pump assembly, the low pressure storage unit and the drain pipe of the refrigerator according to the present invention;

FIG. 5 is another angular relative position of the vacuum pump assembly and the low pressure storage unit and the drain pipe of the refrigerator according to the present invention;

FIG. 6 is a view showing the relative positions of a vacuum pump assembly, a low pressure storage unit, a drain pipe and a muffler of the refrigerator according to the present invention;

FIG. 7 is a first schematic view of the overall structure of an air leakage prevention unit of the refrigerator according to the present invention;

FIG. 8 is a schematic view of the whole structure of the air leakage preventing unit of the refrigerator of the present invention;

FIG. 9 is a cross-sectional view taken along A-A of FIG. 8;

FIG. 10 is an exploded view of an air leakage preventing unit of the refrigerator according to the present invention;

FIG. 11 is an exploded view of another view of the air leakage preventing unit of the refrigerator according to the present invention;

FIG. 12 is an exploded view of another view angle of the air leakage preventing unit of the refrigerator of the present invention

FIG. 13 is a schematic structural view of a floating member of an air leakage preventing unit of a refrigerator according to the present invention;

FIG. 14 is a schematic view of another perspective of the float member of the air leakage preventing unit of the refrigerator according to the present invention

FIG. 15 is a schematic view showing a structure of a partition plate of an air leakage preventing unit of a refrigerator according to the present invention;

FIG. 16 is a schematic diagram illustrating a relative position relationship between a second fixing member and an inner container of the refrigerator according to the present invention;

FIG. 17 is a schematic structural view of a vacuum pump assembly and a liner of the refrigerator according to the present invention;

FIG. 18 is another schematic structural view of the vacuum pump assembly and the inner container of the refrigerator according to the present invention;

FIG. 19 is an exploded view of the vacuum pump assembly, the first fixing member and the second fixing member of the refrigerator according to the present invention;

FIG. 20 is an exploded view of the pump casing of the refrigerator in accordance with the present invention;

FIG. 21 is a schematic view of a vacuum pump assembly and a first fixing member of the refrigerator according to the present invention;

FIG. 22 is a schematic view of an assembly structure of the vacuum pump assembly and the inner container of the refrigerator according to the present invention;

fig. 23 is an enlarged view of the area a in fig. 22.

In the above figures:

a refrigerator 1; a box body 2; a housing 2 a; an inner container 2 b; a mounting hole 21; an accommodating chamber 22; a separation space 23; a refrigerating chamber 10; a freshness retaining container 11; a low-pressure storage unit 12; a housing 4; a door body 5; a drain pipe 13; a vacuum pump 3; a first pipe 14; a second pipe 15; a suction pipe 16; an exhaust pipe 17; a pump housing 6; a connecting plate 61; the mounting notches 61 a; a first housing 6 a; a second housing 6 b; an elastic body 7; a first fixing member 8; a fixed plate 81 a; a fixing through hole 81 c; a mounting groove 82; a projection 83; a second fixing member 9; a stopper portion 91 a; a fixed hook 91 b; an isolated space 92; an elastic pad 18; a muffler 24; an air leakage prevention unit 40; a float member 50; the floating columns 50 a; a stopper pad 50 b; a clip 50 c; an accommodating groove 51; a partition 60; fitting holes 60 a; a vent hole 60 b; a first end tube section 71; a second end tube section 70.

Detailed Description

The present invention is further described below in conjunction with specific examples to enable those skilled in the art to better understand the present invention and to practice it, but the scope of the present invention as claimed is not limited to the scope described in the specific embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1-2, a refrigerator 1, the refrigerator 1 includes a heat-insulating box 2, the box 2 includes a casing 2a, an inner container 2b and a heat-insulating layer (not shown) therebetween. The cabinet 2 defines a plurality of insulated low-temperature storage compartments to store food and the like. In the present embodiment, these low-temperature storage compartments are a refrigerating compartment 10 located at the upper portion and a freezing compartment located at the bottom portion, respectively. The low-temperature storage compartments may be closed by respective corresponding door. The refrigerating chamber 10 is provided with a refrigerating side-by-side door, and the freezing chamber is provided with a freezing side-by-side door.

It should be understood that the invention should not be limited to a particular distribution of the storage compartments of the refrigerator 1, but that the invention may also be applied to other forms of refrigerator 1, such as a refrigerator 1 with a drawer door, etc.

The refrigerator 1 has an evaporative refrigeration system forming a closed loop. The refrigeration system includes at least a compressor (not shown), a condenser (not shown), a throttle device (not shown), and an evaporator (not shown). Since such a refrigeration system is well known in the art, further description thereof is omitted. Of course, other types of refrigeration systems (e.g., absorption refrigeration systems, thermoelectric refrigeration systems) may be used with the refrigerator 1.

The refrigerator 1 is provided with a low pressure storage unit 12 which can be maintained in a low pressure state and a vacuum pump assembly for pumping gas from the inside of the low pressure storage unit 12. The vacuum pump assembly may include a vacuum pump 3 and a pipe connected between the vacuum pump 3 and the low pressure storage unit 12.

In the present embodiment, the low pressure storage unit 12 is provided inside the refrigerating compartment 10. It should be understood that in other embodiments, the low pressure storage unit 12 may be disposed in other low temperature storage compartments, such as a temperature-changing compartment having a temperature range that is switchable between a refrigerated temperature zone and a frozen temperature zone.

The low pressure storage unit 12 is located at the bottom of the refrigerating compartment 10 and is supported on the bottom wall 52a of the refrigerating compartment 10. A fresh-keeping container 11 with high humidity and suitable for keeping foods such as vegetables and the like can be arranged at the adjacent position of the low-pressure storage unit 12; the low pressure storage unit 12 is provided at the bottom of the refrigerating compartment 10 in parallel with the fresh food container 11.

The low pressure storage unit 12 may be assembled in the cabinet 2 after being constructed independently of the cabinet 2. Referring to fig. 2, in the present embodiment, the low pressure storage unit 12 has a substantially flat rectangular parallelepiped shape, and the sum of the width of the low pressure storage unit 12 and the width of the fresh food container 11 is slightly smaller than the width of the refrigerating compartment 10, so that the bottom space of the refrigerating compartment 10 is effectively allocated, and both the fresh food container 11 and the low pressure storage unit 12 can be inserted into the refrigerating compartment 10 or pulled out of the refrigerating compartment 10.

The low pressure storage unit 12 includes a case 4 fixed in the refrigerating chamber 10 and a door 5 connected to the case 4 and movable into and out of the refrigerating chamber 10.

Referring to fig. 2, the housing 4 has a box-shaped structure defining a flat low-pressure storage compartment having a food access opening. In this embodiment, the access opening is located at the front end of the housing 4 facing the user. The latticed reinforcing ribs are arranged on the outer side of the box wall of the shell 4 to increase the strength of the box wall of the shell 4 and avoid deformation of the shell 4 caused by the difference between the internal pressure and the external pressure after vacuumizing.

Door 5 may be provided with an annular sealing member to form an airtight joint between housing 4 and door 5 when door 5 is in the closed position, preventing gas from entering the low-pressure storage chamber from the joint between housing 4 and door 5. The sealing element may also be arranged at the front end of the housing 4.

When the low pressure storage chamber is closed by the door 5 and the vacuum pump assembly is started, the gas in the low pressure storage chamber is extracted and the low pressure storage chamber is in a low pressure state. According to a preferred embodiment of the present invention, at the end of the evacuation process, the pressure within the low pressure storage chamber is between one standard atmosphere and absolute vacuum. The skilled person also colloquially refers to the "vacuum chamber" as the pressure in the low pressure storage chamber is lower than the standard atmospheric pressure.

The door body 5 is a drawer type door, and the door body 5 may be pushed toward the case 4 to close the access port of the low pressure storage chamber or pulled out to open the low pressure storage chamber. The rear side of the door body 5 is connected with a tray-shaped article container for placing articles. The user obtains items located in the low pressure storage unit 12 or stores items in the low pressure storage unit 12 by pushing or pulling the storage container into or out of the low pressure storage compartment. The door 5 and the storage container together constitute a drawer unit that can be pushed into and pulled out of the housing 4.

As shown in fig. 3 to 6, the refrigerator 1 has a drain pipe 13 for draining condensed water inside the refrigerator 1. One end of the vacuum pump assembly is communicated with the low pressure storage unit 12, and the other end is communicated with a drain pipe 13 of the refrigerator 1. The vacuum pump assembly operates to pump out the air in the low pressure storage unit 12 and transfer it to the drain pipe 13, and finally, it is discharged out of the refrigerator 1 through the drain pipe 13. So as to avoid the air pumped out from the low-pressure storage unit 12 directly discharging into the refrigerator 1 to make the foods in other areas in the refrigerating chamber 10 taint with each other and affect the fresh-keeping effect of the foods.

The vacuum pump assembly includes a vacuum pump 3, a first pipe 14 connecting the vacuum pump 3 and the low pressure storage unit 12, and a second pipe 15 connecting the vacuum pump 3 and the drain pipe 13, wherein a silencer 24 is provided on the second pipe 15.

The vacuum pump assembly is provided on the inner container 2b of the refrigerating chamber 10 near the bottom of the low pressure storage unit 12. The upper part of the back wall of the inner container 2b of the refrigerating chamber 10 is recessed backwards to form an accommodating cavity 22 for accommodating a vacuum pump assembly; the area of the inner container 2b close to the containing cavity 22 is provided with a mounting hole 21 for fixing the vacuum pump assembly. In this embodiment, the vacuum pump assembly is located in the accommodating chamber 22, and a separation space 23 is formed between the vacuum pump assembly and the chamber wall of the accommodating chamber 22, so as to reduce direct contact between the vacuum pump assembly and the inner container 2b, reduce transmission of vibration, and effectively reduce noise.

The vacuum pump assembly comprises a vacuum pump 3, a pump shell 6 and an elastic body 7 sleeved between the vacuum pump 3 and the pump shell 6. The vacuum pump 3 is provided with an air suction pipe 16 communicated with the first pipeline 14 and an exhaust pipe 17 communicated with the second pipeline 15. The exhaust pipe 16 is arranged in parallel with the exhaust pipe 17 and is located at the same end of the vacuum pump 3. When the vacuum pump is operated, the air in the low-pressure storage unit 12 is sequentially conveyed to the drain pipe 13 through the first pipeline 14, the air suction pipe 16, the vacuum pump 3, the exhaust pipe 17, the second pipeline 15 and the silencer 24 arranged on the second pipeline 15, and finally is discharged out of the box body 2 through the drain pipe 13. In the embodiment, the outer side of the vacuum pump is sleeved with the elastic body, and the elastic body can absorb the vibration on the vacuum pump so as to reduce the noise generated when the vacuum pump works; in addition, be equipped with muffler 24 on the second pipeline to further noise absorption, in order to optimize the wholeness ability of refrigerator, improve user experience.

As shown in fig. 7 to 15, the refrigerator 1 has an air leakage preventing unit 40 disposed between the low pressure storage unit 12 and the vacuum pump 3, and the air leakage preventing unit 40 can prevent air leakage caused by negative pressure formed in the low pressure storage unit 12 after vacuum pumping. In the conventional structure, when the low pressure storage unit 12 is in a negative pressure state after evacuation, gas is sucked back into the gas exhaust pipe 16 through the gas exhaust pipe 17 of the vacuum pump 3 and is exhausted into the low pressure storage unit 12 through the gas exhaust pipe 16, which causes gas leakage in the low pressure storage unit 12 and reduces the evacuation efficiency. The air leakage prevention unit 40 of the embodiment can effectively prevent air leakage caused by suck-back, thereby ensuring the vacuum degree of the low-pressure storage unit 12 and ensuring the fresh-keeping effect of food.

The air leakage prevention unit 40 comprises an air leakage prevention pipe, and the air leakage prevention pipe comprises a plurality of pipe sections which are sequentially connected and communicated; a partition plate 60 is arranged at the butt joint of two adjacent pipe sections, and an air leakage preventing floating piece 50 is arranged on the partition plate 60; the pipe sections include a first pipe section 71 and a second pipe section 70 at both ends thereof, wherein the first pipe section 71 is in communication with the low pressure storage unit 12, and the second pipe section 70 is in communication with the vacuum pump 3.

The partition plate 60 is provided with an assembly hole 60a for mounting the floating member 50; a plurality of vent holes 60b are provided around the fitting hole 60 a.

The floating member 50 includes a stopper pad 50b for cooperating with the partition plate 60 and a floating post 50a perpendicular to the stopper pad 50b and installed in the fitting hole 60a of the partition plate 60; the upper partial region of the floating column 50a is protruded to form a clamping column 50c along the radial direction thereof, and an annular accommodating groove 51 for accommodating the partition plate 60 is formed between the clamping column 50c and the blocking pad 50 b.

The plurality of vent holes 60b are disposed in the area where the blocking pad 50b overlaps the partition 60, so as to ensure that the blocking pad 50b can completely block the plurality of vent holes 60 b. The barrier pad 50b cooperates with the partition 60 to open or close the vent hole 60 b. The stop 50b of the float 50 is located on the side of the partition 60 remote from the first end pipe section 71, i.e. the stop 50b of the float 50 is located on the side of the partition 60 remote from the low pressure storage unit 12. A plurality of floatation members 50 are mounted between the plurality of pipe sections in an azimuthally consistent manner.

The floating piece 50 is arranged as an elastic material piece so as to be in sealing fit when the floating piece 50 is attached to the partition plate 60 under the action of external force, so that the floating piece 50 is ensured to be in sealing contact with the partition plate 60; while ensuring that the float member 50 is restored to its original shape after being separated from the partition plate 60. In this embodiment, the floating member 50 is a rubber member.

In the embodiment, two or more floating pieces are arranged, wherein the more the number of the floating pieces in the air leakage preventing pipe is, the more the air leakage preventing stability is improved.

When the air extracting device extracts air, the external pressure is smaller than the internal pressure of the low-pressure storage unit 12, the floating piece 50 moves towards the direction close to the vacuum pump 3 under the action of the difference between the internal pressure and the external pressure, the baffle pad 50b is separated from the partition plate 60, the vent hole 60b is opened, the adjacent two pipe sections are communicated, air in the low-pressure storage unit 12 enters the first end pipe section 71 and is transmitted towards the second end pipe section 70 through the vent hole 60b, finally enters the first pipeline 14 from the second end pipe section 70, and then is sequentially exhausted through the air extracting pipe 16, the vacuum pump 3, the exhaust pipe 17, the second pipeline 15 and the drain pipe 13.

After the air pumping is finished, the external pressure is greater than the internal pressure of the low-pressure storage unit 12, the floating piece 50 moves towards the inside of the low-pressure storage unit 12 under the action of the pressure, the blocking pad 50b on the floating piece 50 is in sealing fit with the partition plate 60, the vent hole 60b is closed, and the adjacent two pipe sections are separated, so that the air is effectively prevented from entering the low-pressure storage unit 12 through the exhaust pipe 17 and the exhaust pipe 16 of the vacuum pump 3, and the air leakage of the low-pressure storage unit 12 is caused.

The groove width of the accommodating groove 51 when the floating member 50 is in a natural state (without external force) is not less than the thickness of the partition plate 60, so that a moving space is ensured in the normal direction of the partition plate 60 by the floating member 50 under the action of internal and external pressure difference, and the blocking pad 50b and the partition plate 60 can be in a sealed fit and separated state, namely, the vent hole 60b is in an open state during air extraction, and the vent hole 60b is in a closed state after air extraction.

When the width of the accommodating groove 51 is smaller than the thickness of the partition plate 60 when the floating member 50 is in a natural state (not affected by an external force), it is necessary to ensure that the deformation amount when the floating member 50 is mounted in the mounting hole 60a of the partition plate 60 and not affected by other external forces is smaller than the maximum deformation amount of the accommodating groove 51 of the floating member 50; so as to ensure that the blocking pad 50b is separated from the partition plate 60 when the floating member 50 moves in the direction approaching the vacuum pump 3 along the normal direction of the partition plate 60 under the action of the internal and external pressure difference, i.e. to ensure that the vent hole 60b is in an open state during air extraction. Specifically, a configuration is adopted in which the groove width of the receiving groove 51 is larger than the thickness of the partition 60 when the floating column 50a is not subjected to an external force.

The partition plate 60 and the air leakage preventing pipe are made of ABS plastic and are welded and connected into a whole through a hot melting process, so that air leakage is effectively prevented.

The air leakage prevention unit 40 opens the vent hole 60b during air extraction under the action of the low-pressure storage unit 12, and closes the vent hole 60b after air extraction is finished; the air leakage prevention unit 40 can effectively avoid air leakage caused by back suction, ensure the vacuum degree of the low-pressure storage unit 12 and ensure the fresh-keeping effect of food.

Referring to fig. 16 to 23, in the present embodiment, the pump housing 6 includes a first housing 6a and a second housing 6b, and the first housing 6a and the second housing 6b are engaged to be mounted outside the elastic body 7. The pump shell 6 is arranged in a split mode, and is convenient to disassemble and assemble.

The pump shell 6 is provided with a connecting plate 61 fixed with the inner container 2 b; the end of the connecting plate 61 remote from the central axis of the pump housing 6 is provided with a mounting notch 61 a. Along the direction of keeping away from pump case 6 center pin, the region that installation breach 61a is close to connecting plate 61 border is the shrink form, and above setting up can ensure that installation breach 61a has sufficient accommodation space to can effectively fix the installation component in it, avoid droing. In this embodiment, the projection shape of the mounting notch 61a on the connecting plate 61 is a major arc. In the present embodiment, the connection plate 61 is provided on the outer periphery of the first housing 6 a; wherein, the two edges where the first shell 6a and the second shell 6b are butted are both provided with a connecting plate 61.

The refrigerator comprises a first fixing piece 8 and a second fixing piece 9 which are matched with each other; wherein, the first fixed part 8 is fixedly connected with the connecting plate 61 of the pump shell 6, and the first fixed part 8 is arranged on the inner wall of the inner container 2 b; the second fixing member 9 is installed at the outer side of the inner container 2b, and is matched with the first fixing member 8 after passing through the installation hole 21, so as to fix the vacuum pump assembly on the inner container 2 b.

The first fixing member 8 includes a fixing column, fixing plates 81a disposed at both ends of the fixing column, and fixing through holes 81c penetrating the fixing column and the fixing plates 81 a; an annular mounting groove 82 is formed between the fixing plates 81a provided at both end portions of the fixing post. The fixing column of the first fixing member 8 is mounted in the mounting notch 61a of the pump case 6, and the connecting plate 61 of the pump case 6 is mounted in the mounting groove 82 of the first fixing member 8. The size of the fixing plate 81a is larger than the size of the mounting hole 21 of the inner container 2 b. In this embodiment, the fixing plate 81a is provided with a protrusion 83 on the end surface away from the fixing column, so as to reduce the contact area between the fixing plate 81a and the inner container 2b and improve the contact stability.

The second fixing member 9 includes a stopping portion 91a, and a plurality of fixing hooks 91b separately arranged are disposed on one side of the stopping portion 91 a. The fixing hooks 91b are separated from each other by an isolation space 92 to provide a sufficient elastic deformation space for the fixing hooks 91 b. The arrangement path of the fixing hooks 91b is consistent with the shape of the fixing through holes 81c of the first fixing member 8, so that the fixing hooks 91b pass through the fixing through holes 81 c. In this embodiment, the fixing through hole 81c is circular, and the stopping portion 91a is provided with two hooks disposed opposite to each other. The size of the stopping part 91a is larger than that of the mounting hole 21 on the inner container 2b, so that the stopping part 91a is stopped at the outer side of the inner container 2 b.

When the pump shell is installed, the first fixing piece 8 is positioned on the inner side of the inner container 2b, and the fixing column is installed in an installation notch 61a of the connecting plate 61 on the pump shell 6; the stopping portion 91a of the second fixing member 9 is located outside the inner container 2b, and the fixing hook 91b sequentially penetrates through the mounting hole 21 on the inner container 2b and the fixing through hole 81c on the first fixing member 8 located inside the inner container 2b, and then is clamped with the fixing plate 81a on the first fixing member 8 far away from the inner container 2b, so that the second fixing member 9 and the first fixing member 8 are fixed, and the vacuum pump assembly and the inner container 2b are fixed.

In this embodiment, an elastic pad 18 is installed between the stopping portion 91a of the first fixing member 8 and the inner container 2b to effectively absorb vibration and reduce the transmission of vibration. The second fixing member 9 may be an elastic member, or an inner portion thereof may be made of a rigid material, and an outer portion thereof may be made of an elastic material, so as to maintain the connection rigidity and effectively reduce vibration and noise. It should be understood that when the fixing post or fixing plate 81a of the second fixing member 9 is provided with an elastic material at least externally, vibration and noise reduction can be achieved.

The vacuum pump assembly and the inner container are fixed through the clamping connection of the elastic fixing clamping hook 91b of the second fixing piece 9 and the first fixing piece 8 and the matching of the fixing column of the first fixing piece 8 and the mounting notch 61a on the vacuum pump assembly, and the mounting of the vacuum pump assembly is simplified due to the arrangement of the fixing structure; on the other hand, make vacuum pump subassembly and inner bag non-direct contact through above setting up, can effectively avoid the transmission of the produced noise of vacuum pump during operation, optimize the wholeness ability of refrigerator, improve user experience.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims

1. The refrigerator is characterized in that: it includes:

the low-temperature storage compartment is surrounded by the inner container;

leak protection gas unit, it includes:

2. The refrigerator according to claim 1, wherein: the partial region forms the card post along its radial protrusion on the unsteady post, the card post with keep off and form between the pad and hold the holding tank of baffle.

3. The refrigerator according to claim 2, wherein: under the floating column does not receive the exogenic action state, the groove width of holding tank is greater than the thickness of baffle.

4. The refrigerator according to any one of claims 1 to 3, wherein: two floating pieces are arranged in the air leakage preventing pipe.

5. The refrigerator according to any one of claims 1 to 3, wherein: the vent holes are distributed around the assembly hole.

6. The refrigerator according to any one of claims 1 to 3, wherein: the floating piece is made of rubber materials.

7. The refrigerator according to any one of claims 1 to 3, wherein: the baffle and the air leakage preventing pipe are made of ABS plastic.

8. The refrigerator according to claim 7, wherein: the partition plate and the anti-leakage air pipe are welded and connected into a whole through a hot melting process.

9. The refrigerator according to any one of claims 1 to 3, wherein: the vacuum pump is sleeved with a pump shell, and the pump shell is fixedly connected to the inner container through a first fixing piece and a second fixing piece which are respectively positioned on the inner side and the outer side of the inner container; wherein, the inner container is provided with a mounting hole;

wherein the stopping part is stopped by the inner container;

10. The refrigerator according to claim 9, wherein: the pump shell is provided with a connecting plate, and the end part of the connecting plate, which is far away from the central shaft of the pump shell, is provided with an installation notch;