CN223425565U

CN223425565U - Vacuum fresh-keeping box and refrigeration equipment

Info

Publication number: CN223425565U
Application number: CN202422974254.5U
Authority: CN
Inventors: 杨春; 李龙军; 张朋格; 刘铁伟
Original assignee: Hisense Refrigerator Co Ltd
Current assignee: Hisense Refrigerator Co Ltd
Priority date: 2024-12-03
Filing date: 2024-12-03
Publication date: 2025-10-10
Anticipated expiration: 2034-12-03

Abstract

The utility model relates to a vacuum preservation box and refrigeration equipment, which comprises a box body, a box cover, a vacuumizing port, a sealing surface, a vacuum air valve, a sealing part, an abutting part and a sealing part, wherein the vacuumizing port is arranged on the box cover, the sealing surface surrounds the periphery of the top of the vacuumizing port, the vacuum air valve comprises a cylinder part, the cylinder part has elasticity and can stretch along the axial direction of the cylinder part, the sealing part is used for abutting against the sealing surface, the abutting part is used for abutting against the bottom opening of the vacuumizing port, the distance between the sealing part and the abutting part is smaller than the height of the vacuumizing port in a natural state, the sealing part is tightly attached to the sealing surface, the sealing performance of the vacuum air valve can be improved, and therefore the sealing performance of the vacuum preservation box can be effectively improved.

Description

Vacuum fresh-keeping box and refrigeration equipment

Technical Field

The utility model relates to the technical field of vacuum equipment, in particular to a vacuum preservation box and refrigeration equipment.

Background

The refrigerating equipment such as a refrigerator, a freezer, a sideboard, a beverage cabinet and the like is a container for storing food and other articles by utilizing a low-temperature environment generated by the phase change of a refrigerant, and is one of household appliances indispensable for the living of people. Along with the improvement of living standard of people, the requirements on refrigeration equipment are also higher and higher.

Conventional refrigeration equipment generally comprises a box body and a box liner arranged in the box body, wherein a refrigeration compartment is formed in the box liner. The front side of the box body is provided with a box door which is used for opening and closing the refrigeration compartment.

In the related refrigeration equipment, the vacuum preservation box comprises a box body, a box cover and a vacuum air valve, wherein the box cover is arranged at the top of the box body, and is usually provided with a vacuumizing port for vacuumizing the interior of the box body. The vacuum air valve is arranged at the vacuumizing port and is used for sealing the vacuumizing port. The vacuum air valve of the box cover of the existing vacuum preservation box is easy to loosen, so that the vacuum preservation box is easy to leak air, and the sealing performance of the vacuum preservation box is poor.

Disclosure of utility model

The utility model aims to provide a vacuum preservation box and refrigeration equipment, so as to improve the sealing performance of a vacuum air valve of a box cover of the vacuum preservation box.

In order to solve the technical problems, the utility model adopts the following technical scheme:

according to one aspect of the present utility model, there is provided a vacuum fresh-keeping box, comprising:

The box body is provided with an opening at the top, and a storage cavity is formed in the box body;

The box cover is detachably covered on the top of the box body to seal the storage cavity;

The vacuumizing port is arranged on the box cover and penetrates through the box cover up and down;

The sealing surface is arranged on the top surface of the box cover, and the sealing surface is circumferentially arranged on the periphery of the top of the vacuumizing port;

the vacuum air valve is used for sealing the vacuumizing port, and the vacuum air valve comprises:

The cylinder part is penetrated in the vacuumizing port, a first ventilation gap is arranged between the cylinder part and the peripheral side wall of the vacuumizing port, and the first ventilation gap is communicated with the storage cavity;

A sealing portion which is annular and circumferentially arranged around a circumferential side of a top portion of the column portion, the sealing portion being for abutting against the sealing surface;

An abutting part arranged on the periphery side of the bottom of the column part and used for abutting against the bottom opening of the vacuumizing port;

Wherein the vacuum gas valve is configured to:

In a natural state, the distance between the sealing part and the abutting part is smaller than the height of the vacuumizing port, so that the sealing part is tightly attached to the sealing surface;

When the vacuum air valve is subjected to upward force, the cylinder portion can be elongated, so that the distance between the sealing portion and the abutting portion is larger than the height of the vacuumizing port, the sealing portion is separated from the sealing surface, and a second ventilation gap communicated with the first ventilation gap is formed between the sealing portion and the sealing surface.

The technical scheme has the advantages that in a natural state, the vacuum air valve is utilized to meet the condition that the distance between the sealing part and the abutting part is smaller than the height of the vacuumizing port. Therefore, when the vacuum valve is arranged at the vacuumizing port, the sealing part can be propped against the sealing surface, and the propping part can be propped against the bottom opening of the vacuumizing port, so that the distance between the sealing part and the propping part is prolonged to the height of the vacuumizing port, and the cylinder part is in an elongated state. At this time, the elastic force generated by the elongation and deformation of the column body can enable the sealing part to be tightly clung to the sealing surface, so that the sealing performance of the vacuum air valve is improved, and the sealing performance of the vacuum fresh-keeping box can be effectively improved.

When the vacuum valve is vacuumized or depressurized, the vacuum valve is subjected to upward force, the cylinder part can be lengthened, the distance between the sealing part and the abutting part is larger than the height of the vacuumizing port, a second ventilation gap is formed between the sealing part and the sealing surface, and the second ventilation gap is communicated with the first ventilation gap, so that the inside of the vacuum preservation box can be vacuumized or depressurized.

In some embodiments of the application, a stop rib is convexly arranged at the bottom of the box cover, the stop rib is circumferentially arranged at the periphery side of the bottom of the vacuumizing port, and the abutting part abuts against the stop rib.

The technical scheme has the advantages that when the vacuumizing port is vacuumized or depressurized, the sealing part can move upwards under the force, the abutting part can abut against the stop rib on the periphery of the bottom opening of the vacuumizing port, and the vacuum air valve is prevented from falling out of the vacuumizing port.

In some embodiments of the present application, a plurality of stopping portions are convexly arranged at the bottom of the stopping rib, the plurality of stopping portions circumferentially surround the circumference side of the bottom of the vacuumizing port at intervals, an air vent groove is formed between adjacent stopping portions, and the air vent groove is communicated with the first air vent gap and the storage cavity.

The technical scheme has the advantages that when the vacuumizing port is vacuumized or depressurized, the abutting part can abut against the stop part at the bottom of the stop rib, so that the first ventilation gap is kept communicated with the storage cavity through the ventilation groove, and then gas in the storage cavity can be pumped out by the vacuumizing connector through the ventilation groove, the first ventilation gap and the second ventilation gap in sequence, and vacuumizing of the inside of the vacuum preservation box is achieved.

In some embodiments of the present application, a positioning ring is protruding from the top surface of the lid, and the positioning ring is circumferentially disposed around the vacuum suction port and the sealing surface.

The technical scheme has the advantages that when the vacuum pump pumps vacuum, the vacuum pump can be in sealing contact with the positioning ring through the vacuum pumping joint, so that air in the vacuum preservation box can smoothly flow into the vacuum pumping joint through the vacuum pumping port and is pumped by the vacuum pump, and the vacuum pumping of the interior of the vacuum preservation box is realized.

In some embodiments of the application, a sealing groove is concavely arranged on the top surface of the box cover, the sealing groove is circumferentially arranged on the periphery of the top of the vacuumizing opening, the sealing surface is formed on the bottom surface of the sealing groove, the sealing part is arranged in the outline of the sealing groove, and the positioning ring is circumferentially arranged on the periphery of the sealing groove.

The technical scheme has the advantages that the sealing part is arranged in the sealing groove, so that the height of the vacuum air valve can be reduced, the vacuum air valve cannot protrude out of the top surface of the positioning ring, and the height requirement of the positioning ring can be reduced.

In some embodiments of the application, the vacuum air valve comprises an indicating bubble arranged at the top of the column part, wherein a central hole is arranged in the column part, the bottom end of the central hole is communicated with the storage cavity, the indicating bubble is closely connected to the top end of the central hole, the indicating bubble protrudes out of the top of the column part in a natural state, and the indicating bubble is trapped in the top of the column part after the storage cavity is vacuumized.

The technical scheme has the advantages that in a natural state, the indication bubbles are protruded outside the top of the column body, so that a user can be reminded that the vacuum fresh-keeping box is in a state of not being vacuumized. When the storage cavity is vacuumized, the air pressure in the storage cavity is lower, and the air pressure in the storage cavity is smaller than the air pressure outside the vacuum preservation box. The indicator bubble can be trapped at the top of the column under the action of the pressure difference between the inside and outside of the vacuum air valve. Thus, the vacuum preservation box can remind a user that the vacuum preservation box is in a low-pressure state or a vacuum state. In addition, the user can also roughly judge the vacuum degree of the vacuum fresh-keeping box according to the invagination depth of the indication bubble, so that the convenience of the user in use is improved.

In some embodiments of the application, the vacuum air valve comprises a handle part which is annular and circumferentially surrounds the periphery of the top of the cylinder part, the handle part is arranged above the sealing part at intervals, a handle groove is formed between the handle part and the sealing part, and the handle groove is annular and circumferentially surrounds the periphery wall of the top of the cylinder part.

The technical scheme has the advantages that when the vacuum preservation box needs to be opened, a user can hold the handle groove, manually lift the handle part, enable the vacuum air valve to be subjected to upward force, further enable the sealing part to move upward, enable the column part to be stressed and elongated, enable the distance between the sealing part and the abutting part to be larger than the height of the vacuumizing port, enable a second ventilation gap to be formed between the bottom surface of the sealing part and the sealing surface, enable air outside the vacuum preservation box to flow into a storage cavity inside the vacuum preservation box through the second ventilation gap and the first ventilation gap, enable the box cover to be opened easily, and enable the air outside the vacuum preservation box to be discharged.

According to another aspect of the utility model, the refrigerating equipment comprises a box body, a box door, a vacuum preservation box and a vacuum preservation box, wherein the box body forms a shell outside the refrigerating equipment, a refrigerating compartment is formed in the box body, the box door is arranged on the box body and used for opening and closing the refrigerating compartment, the vacuum preservation box is arranged on the box door, and the vacuum preservation box adopts the vacuum preservation box.

The technical scheme has the advantages that the elastic design of the cylinder part of the vacuum air valve is matched with the design of the interval between the sealing part and the abutting part of the vacuum air valve, so that the sealing performance of the formed box cover is improved, the sealing performance of the whole vacuum preservation box is improved, and further the product performance of refrigeration equipment is improved.

In some embodiments of the application, the refrigeration equipment comprises a door shelf arranged on the side wall of the refrigerator door facing the refrigeration compartment, and the vacuum fresh-keeping box is detachably arranged on the door shelf.

The technical scheme has the advantages that the vacuum preservation box can be conveniently taken and placed by being detachably arranged on the door shelf.

In some embodiments of the application, the refrigeration equipment comprises a vacuumizing assembly, wherein the vacuumizing assembly is used for vacuumizing the vacuum preservation box, the vacuumizing assembly comprises a vacuumizing joint, a vacuumizing pump and a vacuumizing pipe, the vacuumizing joint is arranged on the box door in a reversible mode and is arranged above the vacuum preservation box, the vacuumizing pump is arranged inside the box door, the vacuumizing pipe is arranged inside the box door, one end of the vacuumizing pipe is connected with the vacuumizing pump, the other end of the vacuumizing pipe is connected with the vacuumizing joint, when the vacuumizing joint is turned over, the vacuumizing joint can be in butt joint with the vacuumizing port, and the vacuumizing pump can vacuumize the storage cavity through the vacuumizing pipe, the vacuumizing joint and the vacuumizing port.

The technical scheme has the advantages that the vacuumizing joint can be conveniently in butt joint with the vacuumizing port through the overturning fit of the vacuum pump and the vacuumizing pipeline and the vacuumizing joint, so that the vacuum pump can vacuumize the storage cavity in the vacuum preservation box. The vacuum preservation box can be taken and placed without being influenced by overturning the vacuumizing connector and separating from the vacuumizing opening.

The details of other embodiments are included in the detailed description and the accompanying drawings.

The effects of the present utility model are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

Drawings

Fig. 1 is a schematic view of a refrigeration appliance according to some embodiments of the utility model.

Fig. 2 is a schematic view of the structure of the case door in fig. 1.

Fig. 3 is a schematic view of the structure of the door shown in fig. 2 in another state.

Fig. 4 is a schematic view of the vacuum fresh-keeping box shown in fig. 3.

Fig. 5 is an exploded view of fig. 4.

Fig. 6 is a schematic view of the structure of the cap of fig. 5.

Fig. 7 is an exploded view of fig. 6.

Fig. 8 is a partially enlarged schematic structural view of fig. 7.

Fig. 9 is a cross-sectional view of the vacuum fresh box shown in fig. 4.

Fig. 10 is a partially enlarged schematic structural view of fig. 9.

Fig. 11 is a cross-sectional view of the layout shown in fig. 3.

Fig. 12 is a partially enlarged structural schematic view of fig. 11.

Fig. 13 is a cross-sectional view of the cap of fig. 7.

Fig. 14 is a partially enlarged structural schematic view of fig. 13.

Fig. 15 is a schematic view showing the structure of the vacuum air valve shown in fig. 10 in a natural state.

Fig. 16 is a schematic view showing the structure of the vacuum air valve shown in fig. 12 in a vacuumized state.

The reference numerals are as follows, 1, a box body, 2, a box door, 21, a door shell, 22, a door liner, 221, a liner rib, 23, a door shelf, 3, a vacuum fresh-keeping box, 31, a box body, 310, a storage cavity, 32, a box cover, 321, a vacuumizing port, 322, a sealing surface, 323, a stopping rib, 3231, a stopping part, 3232, a ventilating groove, 324, a reinforcing rib, 325, a positioning ring, 326, a sealing groove, 33, a sealing ring, 34, a vacuum air valve, 341, a column part, 342, a sealing part, 343, an abutting part, 344, an indicating bubble, 345, a central hole, 346, a handle part, 347, a handle groove, 4, a vacuumizing joint, 41 and a sealing ring.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model will be described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the utility model.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, a refrigeration apparatus according to an embodiment of the present utility model may include a case 1. The case 1 may have a rectangular hollow structure. It will be appreciated that in other embodiments, the housing 1 may take the form of a hollow housing structure of other shapes.

In some embodiments, a refrigeration compartment (not shown) may be formed within the cabinet 1. The refrigerating compartment can be used as an independent storage space and used as a refrigerating chamber, a temperature changing chamber, a freezing chamber and the like so as to meet different storage requirements of refrigerating, freezing and the like according to different types of stored articles.

In some embodiments, a plurality of refrigeration compartments may be provided within the cabinet 1. A plurality of refrigerating compartments may be arranged in the cabinet 1 to be divided up and down or to be divided left and right.

As shown in fig. 1, in some embodiments, a tank (not shown) may be provided in the tank 1. The refrigeration compartment may be formed within the cabinet. A plurality of box liners can be arranged in the box body 1. The plurality of liners may be arranged in the casing 1 so as to be vertically partitioned or so as to be laterally partitioned. One or more refrigeration compartments can be formed in each container.

In some embodiments, a foaming layer (not shown) may be provided in the case 1. The foaming layer may be formed in a space between the outer wall of the tank and the inner wall of the case 1. The foaming layer can be used for heat preservation and insulation of the inner part of the box liner and the refrigerating chamber, and achieves heat preservation performance of refrigerating equipment.

As shown in fig. 1, in some embodiments, a refrigeration system (not shown) may be provided within the cabinet 1. The refrigeration system may be provided inside the cabinet 1. The refrigeration system may be used to provide cool air to the interior of the refrigeration appliance to maintain a low temperature environment for each refrigeration compartment.

In some embodiments, the refrigeration system may include a compressor (not shown). The compressor may be a power source of a refrigeration cycle, and may suck a low-temperature low-pressure refrigerant gas and compress the gas into a high-temperature high-pressure gas. The compressor may deliver high temperature and high pressure refrigerant to the condenser.

In some embodiments, the refrigeration system may include a condenser (not shown). The condenser may be used to receive refrigerant flowing out of the compressor, and may cool and convert high temperature, high pressure refrigerant gas from the compressor into a liquid state. The condenser may transfer heat from the refrigerant to the surrounding air, reducing the temperature of the refrigerant.

In some embodiments, the refrigeration system may include a throttling device (not shown). The condenser may deliver the condensed refrigerant into the throttling device. The restriction may be a capillary tube. The throttling device may be used to throttle down the refrigerant.

In some embodiments, the refrigeration system may include a compressor, a condenser, a throttling device, and an evaporator. The compressor, the condenser, the throttling device and the evaporator can be sequentially connected to form a refrigeration loop. The refrigerant can circulate in the refrigeration circuit to realize the refrigeration of the interior of the box body 1.

Fig. 2 is a schematic view of the structure of the door 2 in fig. 1.

As shown in fig. 1 and 2, in some embodiments, the front side of the cabinet 1 may be provided with a cabinet door 2. The door 2 can be used to open and close the refrigerated compartment. The refrigerator door 2 and the refrigerator body 1 can be connected through a hinge, so that the refrigerator door 2 of the refrigerator can rotate around the axis of the hinge, the refrigerator door 2 of the refrigerator can be opened or closed, and the corresponding refrigeration compartment can be opened or closed.

In some embodiments, the door 2 may be provided in plurality. The plurality of door 2 may be disposed in one-to-one correspondence with the plurality of refrigerating compartments. In other embodiments, a plurality of doors 2 may simultaneously open and close one refrigeration compartment.

As shown in fig. 2, in some embodiments, the door 2 may include a door shell 21. The front side wall of the door shell 21 may form a door panel. The door panel may serve as a front-side exterior surface of the door 2.

In some embodiments, the door 2 may include a door liner 22. The door liner 22 may be provided at the back side of the door shell 21. A foaming layer may be formed between the door liner 22 and the door shell 21. The foaming material fills the foaming layer, so that the heat preservation and heat insulation performance of the box door 2 can be realized.

As shown in fig. 2, in some embodiments, the refrigeration appliance may include a door shelf 23. The door shelf 23 may be provided on a side wall of the door 2 facing the cooling compartment. In this way, the articles can be placed on the door 2 by the door shelf 23, and the space on the refrigerator compartment and the door 2 can be fully utilized.

In some embodiments, a plurality of door shelves 23 may be provided, and a plurality of door shelves 23 may be arranged in a spaced relationship one above the other. The number of the door shelves 23 and the distance between the adjacent door shelves 23 may be adjusted as needed, and are not limited thereto.

In some embodiments, the door liner 22 may have ribs 221 protruding therefrom. The bile 221 may be vertically arranged. The bile 221 may be provided with two. The two ribs 221 are arranged at left and right intervals. The door shelf 23 may be provided between two vertically arranged ribs 221. In this way, the door shelf 23 can be fixed to the door trim 22 by the trim 221, and thus the door shelf 23 is stably fixed to the side wall of the door 2.

In some embodiments, the door shelf 23 may be removably provided on the door 2. The door shelf 23 may be detachably provided on the container rib 221 of the door container 22.

It should be noted that, in other embodiments, the door shelf 23 may be integrally formed in the door liner 22, so that the door shelf 23 may be integrally formed on the side wall of the door 2.

As shown in fig. 2, in some embodiments, the refrigeration device may include a vacuum fresh box 3. The vacuum fresh-keeping box 3 can be arranged on the box door 2. The vacuum fresh box 3 may be supported on a door shelf 23. The interior of the vacuum fresh box 3 may form a storage cavity 310. The interior of the vacuum fresh-keeping box 3 can be vacuumized, so that a vacuum storage environment is formed inside the storage cavity 310. Thus, the vacuum preservation box 3 can be utilized to preserve the food materials in a low-temperature vacuum manner.

Fig. 3 is a schematic view of the structure of the door 2 shown in fig. 2 in another state.

As shown in fig. 2 and 3, in some embodiments, the refrigeration appliance may include an evacuation assembly. The vacuumizing assembly can be used for vacuumizing the vacuum preservation box 3, so that a vacuum storage environment is formed inside the vacuum preservation box 3.

In some embodiments, the evacuation assembly may include a vacuum pump (not shown). The vacuum pump may be provided inside the cabinet door 2. The vacuum pump may be in communication with the storage cavity 310 inside the vacuum fresh box 3. In this way, the vacuum pump can be used to vacuumize the storage cavity 310 inside the vacuum preservation box 3, so that the storage cavity 310 inside the vacuum preservation box 3 forms a vacuum storage environment.

In some embodiments, the evacuation assembly may include an evacuation fitting 4. The suction end of the vacuum pump can be connected with the vacuumizing joint 4. The evacuation connector 4 may be adapted to be in abutting communication with the storage cavity 310 inside the vacuum fresh box 3. In this way, the vacuum pump can vacuumize the storage cavity 310 in the vacuum preservation box 3 through the vacuumizing connector 4, so that the storage cavity 310 in the vacuum preservation box 3 forms a vacuum storage environment.

In some embodiments, the evacuation assembly may include an evacuation line (not shown). The evacuation line may be provided between the vacuum pump and the evacuation connection 4. One end of the vacuumizing pipeline can be connected with a vacuum pump. The other end of the evacuation line may be connected to an evacuation connection 4. Therefore, the air extraction end of the vacuum pump can be connected with the vacuumizing connector 4 through the vacuumizing pipeline, and the vacuum pump can sequentially vacuumize the inside of the vacuum preservation box 3 through the vacuumizing pipeline and the vacuumizing connector 4.

As shown in fig. 2 and 3, in some embodiments, the vacuum connector 4 is reversibly disposed on the door 2. When the vacuumizing connector 4 is turned over, the vacuumizing connector 4 can be in butt joint with or separated from the inside of the vacuum preservation box 3 on the box door 2. When the vacuumizing connector 4 is turned over to be separated from the vacuum preservation box 3, the vacuum preservation box 3 can be taken out from the box door 2. When the vacuumizing connector 4 is turned over to be in butt joint with the inside of the vacuum preservation box 3, the vacuumizing connector 4 can vacuumize the storage cavity 310 in the vacuum preservation box 3, so that a vacuum preservation environment is formed in the storage cavity 310 in the vacuum preservation box 3. Therefore, the vacuum preservation box 3 on the box door 2 can be conveniently vacuumized by a user through the overturning design of the vacuumizing connector 4, and the taking and placing of the vacuum preservation box 3 are not affected.

In some embodiments, the vacuum connection 4 may be provided above the door shelf 23 in a reversible manner. When the vacuum preservation box 3 is arranged on the door shelf 23, the vacuumizing connector 4 can be turned downwards and is in butt joint with the top surface of the vacuum preservation box 3, so that the vacuum pump can vacuumize the inside of the vacuum preservation box 3 through the vacuumizing pipeline and the vacuumizing connector 4 in sequence. When the vacuum connector 4 can be turned upwards, the vacuum connector 4 can be separated from the top surface of the vacuum fresh-keeping box 3, so that the vacuum fresh-keeping box 3 can be taken out from the door shelf 23.

It should be noted that, in other embodiments, the vacuum connector 4 may be movably disposed on the door 2. When the vacuumizing connector 4 can also move to the vacuum preservation box 3, the vacuumizing connector is in butt joint with the inside of the vacuum preservation box 3, so that the vacuum pump can vacuumize the inside of the vacuum preservation box 3 through the vacuumizing pipeline and the vacuumizing connector 4 in sequence.

Furthermore, in other embodiments, the evacuation assembly may not include the evacuation connector 4. The vacuum pump can also be directly in butt joint with the inside of the vacuum preservation box 3 through a vacuumizing pipeline.

Fig. 4 is a schematic view of the structure of the vacuum fresh-keeping box 3 shown in fig. 3.

As shown in fig. 3 and 4, in some embodiments, the vacuum fresh box 3 may be removably supported on a door shelf 23. When the vacuum connector 4 is turned over, the vacuum connector 4 can be docked or separated with the top surface of the vacuum fresh-keeping box 3. Therefore, when the vacuum preservation box 3 needs to be vacuumized, the vacuumizing connector 4 can be turned downwards, so that the vacuumizing connector 4 can be in butt joint with the top surface of the vacuum preservation box 3, and the inside of the vacuum preservation box 3 can be vacuumized. When the vacuum preservation box 3 needs to be taken and placed, the vacuumizing connector 4 can be turned upwards, so that the vacuumizing connector 4 can be separated from the top surface of the vacuum preservation box 3, and the vacuum preservation box 3 on the door shelf 23 can be taken and placed smoothly.

Fig. 5 is an exploded view of fig. 4.

As shown in fig. 5, in some embodiments, the vacuum fresh box 3 may include a box body 31 and a box cover 32. The top of the box 31 is open. The interior of the cassette 31 may form a storage cavity 310. The box cover 32 may be detachably cover-arranged at the top opening of the box body 31, so that the storage cavity 310 may be opened or closed by the box cover 32.

In some embodiments, a vacuum port 321 may be provided on the top surface of the lid 32. When the evacuation connector 4 is turned over, the evacuation connector 4 can be docked or separated with the evacuation port 321 on the top surface of the vacuum preservation box 3. So, when needs vacuum to vacuum preservation box 3, evacuating joint 4 can overturn downwards, makes evacuating joint 4 can dock with evacuating port 321 of vacuum preservation box 3 top surface, and then makes the vacuum pump can be through evacuating joint 4, evacuating port 321, to the inside evacuation of vacuum preservation box 3.

It should be noted that, in other embodiments, the vacuum port 321 may not be disposed on the top surface of the vacuum fresh-keeping box 3. The vacuum port 321 may be provided on other side walls of the vacuum box 3. At this time, the vacuumizing connector 4 may be disposed on one side of the vacuum fresh-keeping box 3 in a reversible manner, or may be movably disposed on one side of the vacuum fresh-keeping box 3, so that the vacuumizing connector 4 is conveniently docked with or separated from the vacuumizing port 321.

Fig. 6 is a schematic view of the structure of the cap 32 of fig. 5. Fig. 7 is an exploded view of fig. 6.

As shown in fig. 5, 6 and 7, in some embodiments, the vacuum fresh box 3 may include a sealing ring 33. The sealing ring 33 may be disposed between the box cover 32 and the box body 31 to seal a gap between the box cover 32 and the box body 31, thereby realizing sealing of the vacuum fresh-keeping box 3.

In some embodiments, the seal ring 33 may be annular. The sealing ring 33 may be provided at a peripheral edge of the bottom surface of the cover 32. When lid 32 lid closes in the open top department of box body 31, sealing washer 33 can support in the top region of the week lateral wall of box body 31, makes sealing washer 33 can centre gripping between the top of the week lateral wall of the bottom surface of lid 32 and box body 31, and then seals the clearance between lid 32 and the box body 31, realizes the seal of vacuum preservation box 3.

Fig. 8 is a partially enlarged schematic structural view of fig. 7. Fig. 9 is a cross-sectional view of the vacuum fresh box 3 shown in fig. 4. Fig. 10 is a partially enlarged schematic structural view of fig. 9.

As shown in fig. 8, 9 and 10, in some embodiments, the vacuum fresh box 3 may include a vacuum gas valve 34. The vacuum gas valve 34 may be disposed through the vacuum suction port 321. The vacuum gas valve 34 may be used to seal the evacuation port 321 and thus the storage cavity 310 inside the vacuum fresh box 3.

In some embodiments, the vacuum gas valve 34 may include a cylindrical portion 341. The column portion 341 may be disposed at the vacuum suction port 321. The outer diameter of the cylinder portion 341 may be smaller than the inner diameter of the vacuum suction port 321, such that a first ventilation gap (not shown) is formed between the outer wall of the cylinder portion 341 and the inner wall of the vacuum suction port 321. When the vacuumizing connector 4 vacuumizes the vacuumizing port 321, the column body 341 can be forced to move upwards, and air in the vacuum preservation box 3 can be pumped out through the first ventilation gap, so that a vacuum environment can be formed in the vacuum preservation box 3.

As shown in fig. 10, in some embodiments, the vacuum gas valve 34 may include a seal 342. The seal 342 may be provided on top of the vacuum gas valve 34. The sealing portion 342 may be provided at a peripheral side of the top of the cylinder portion 341. The column portion 341 is annular and circumferentially arranged around the circumferential side of the top of the column portion 341. A sealing surface 322 may be formed on the top surface of the lid 32. The sealing surface 322 may be disposed around the circumferential side of the top opening of the vacuum suction port 321. The sealing portion 342 may protrude from the top of the vacuum suction port 321. The seal 342 may be disposed above the sealing surface 322. The sealing portion 342 may be used to abut against the sealing surface 322 to seal the vacuum port 321, and thus the storage cavity 310 inside the vacuum fresh box 3.

Fig. 11 is a cross-sectional view of the layout shown in fig. 3. Fig. 12 is a partially enlarged structural schematic view of fig. 11.

As shown in fig. 12, in some embodiments, when the vacuumizing connector 4 vacuumizes the vacuumizing port 321, the sealing portion 342 may be forced to move upwards, so that a second air-vent gap (not shown) may be formed between the bottom surface of the sealing portion 342 and the sealing surface 322, and the second air-vent gap is communicated with the first air-vent gap, so that the storage cavity 310 inside the vacuum fresh-keeping box 3 may be communicated with the vacuumizing connector 4 through the first air-vent gap and the second air-vent gap. At this time, the vacuum pump can pump the air inside the vacuum preservation box 3 through the vacuumizing connector 4, so as to vacuumize the inside of the vacuum preservation box 3.

When the vacuum preservation box 3 is vacuumized, negative pressure can be formed inside the vacuum preservation box 3, the sealing part 342 can be tightly attached to the sealing surface 322 under the action of internal and external pressure difference, and then the vacuumizing port 321 is sealed, and then the storage cavity 310 inside the vacuum preservation box 3 is sealed.

It should be noted that, in some embodiments, when the vacuum fresh-keeping box 3 needs to be opened, the sealing portion 342 may be moved upward by an external force, so that a second ventilation gap may be formed between the bottom surface of the sealing portion 342 and the sealing surface 322, and air outside the vacuum fresh-keeping box 3 may flow into the storage cavity 310 inside the vacuum fresh-keeping box 3 through the second ventilation gap and the first ventilation gap, so as to realize pressure relief of the vacuum fresh-keeping box 3, and enable the box cover 32 to be easily opened.

As shown in fig. 10 and 12, in some embodiments, the vacuum gas valve 34 may include an abutment 343. The abutment portion 343 is provided on the peripheral side of the bottom of the cylindrical portion 341. The abutting portion 343 is used for abutting against the bottom opening of the vacuum pumping port 321. When the vacuum port 321 is evacuated or depressurized, the vacuum air valve 34 can move upwards under force, so that the abutting portion 343 abuts against the peripheral side wall of the bottom opening of the vacuum port 321, and further the vacuum air valve 34 is prevented from being separated from the vacuum port 321.

In some embodiments, when the vacuum-pumping port 321 is pumped, the sealing portion 342 may be forced to move upwards, and the abutting portion 343 abuts against the bottom opening of the vacuum-pumping port 321, at this time, the distance between the sealing portion 342 and the abutting portion 343 is greater than the height of the vacuum-pumping port 321, so a second air-passing gap may be formed between the bottom surface of the sealing portion 342 and the sealing surface 322, so that the second air-passing gap communicates with the first air-passing gap.

In some embodiments, the abutment 343 may be annular. The abutment portion 343 may be circumferentially arranged on the outer peripheral wall of the bottom of the cylinder portion 341.

As shown in fig. 8 and 10, in some embodiments, the bottom of the cover 32 may be provided with a stopping rib 323. The stopper rib 323 is circumferentially arranged around the circumferential side of the bottom opening of the vacuum suction port 321. The stop rib 323 may serve as a peripheral sidewall of the bottom opening of the vacuum suction port 321. Thus, when the vacuum port 321 is evacuated or depressurized, the sealing portion 342 can be forced to move upwards, and the abutting portion 343 can abut against the stop rib 323 on the periphery of the bottom opening of the vacuum port 321, so as to prevent the vacuum air valve 34 from being separated from the vacuum port 321.

In some embodiments, the bottom of the stop rib 323 may be provided with a plurality of stop portions 3231. The plurality of stopper portions 3231 may be circumferentially spaced apart on the stopper rib 323. The plurality of stoppers 3231 may be circumferentially arranged at intervals around the circumferential side of the bottom of the vacuum suction port 321. A ventilation groove 3232 may be formed between adjacent stopper portions 3231. The vent slot 3232 may communicate the first vent gap with the storage cavity 310. Thus, when the vacuumizing port 321 is vacuumized or depressurized, the abutting portion 343 can abut against the stop portion 3231 at the bottom of the stop rib 323, so that the first ventilation gap is kept communicated with the storage cavity 310 through the ventilation groove 3232, and then the gas in the storage cavity 310 can be pumped out by the vacuumizing connector 4 through the ventilation groove 3232, the first ventilation gap and the second ventilation gap in sequence, so that vacuumizing of the inside of the vacuum preservation box 3 is realized.

In addition, when the vacuum-pumping port 321 is depressurized, the abutting portion 343 may also abut against the stop portion 3231 at the bottom of the stop rib 323, so that the first ventilation gap is kept in communication with the storage cavity 310 through the ventilation groove 3232, and air outside the vacuum fresh-keeping box 3 may flow into the storage cavity 310 sequentially through the second ventilation gap, the first ventilation gap and the ventilation groove 3232, so as to realize the internal and external air pressure balance of the vacuum fresh-keeping box 3, and further the box cover 32 may be easily opened.

In other embodiments, the bottom of the stop rib 323 may not be provided with the stop portion 3231 and the air channel 3232, and the abutting portion 343 may be provided with an air vent for communicating the first air gap with the storage cavity 310. When the interior of the storage cavity 310 is located, a vent hole may be utilized to maintain the first vent gap in communication with the storage cavity 310.

As shown in fig. 7 and 8, in some embodiments, a reinforcing rib 324 may be provided on the bottom surface of the cover 32. The reinforcing bars 324 may be provided in plurality. The plurality of ribs 324 may increase the structural strength of the lid 32.

In some embodiments, a plurality of reinforcing ribs 324 may be circumferentially arranged on the circumferential side of the stopper rib 323. One end of the reinforcing bar 324 may be connected to the stopper bar 323. The other end of the reinforcing rib 324 may be connected to the peripheral edge of the bottom surface of the cover 32. In this way, the structural strength of the cover 32 can be further improved by the plurality of reinforcing ribs 324 and the stopper ribs 323.

As shown in fig. 8 and 12, in some embodiments, a locating ring 325 may be provided protruding from the top surface of the lid 32. The positioning ring 325 may be circumferentially disposed at the circumferential side of the vacuum suction port 321.

When the vacuumizing connector 4 is turned over, the vacuumizing connector 4 is abutted with the top of the vacuum preservation box 3, the vacuumizing connector 4 can be abutted with the locating ring 325 in a sealing manner, the inside of the locating ring 325 is isolated from the outside of the locating ring, and then the vacuumizing connector 4 can be abutted with the vacuumizing port 321 in the locating ring 325. Thus, when the vacuum pump is used for vacuumizing, air in the vacuum preservation box 3 can smoothly flow into the vacuumizing connector 4 through the vacuumizing port 321 and is pumped out by the vacuum pump, so that the vacuum in the vacuum preservation box 3 is vacuumized.

As shown in fig. 11 and 12, in some embodiments, a sealing ring 41 may be provided on the vacuum-pumping head 4. The seal ring 41 may be made of a flexible material. The seal ring 41 may have a ring shape. When the vacuumizing connector 4 is in butt joint with the top of the vacuum preservation box 3, the sealing ring 41 can be in seal butt joint with the positioning ring 325, so that the tightness of the butt joint of the vacuumizing connector 4 and the vacuumizing port 321 is ensured, and the air in the vacuum preservation box 3 can be smoothly pumped out.

Fig. 13 is a cross-sectional view of the cap 32 shown in fig. 7. Fig. 14 is a partially enlarged structural schematic view of fig. 13.

As shown in fig. 12 and 14, in some embodiments, a sealing groove 326 may be concavely provided on the top surface of the cover 32, and the sealing groove 326 may be circumferentially disposed around the top opening of the vacuum suction port 321. The sealing surface 322 may be formed at the bottom of the groove of the sealing groove 326. The seal 342 may be provided within the profile of the seal groove 326. The locating ring 325 may be circumferentially disposed on a circumferential side of the seal groove 326. Thus, by disposing the sealing portion 342 in the sealing groove 326, the height of the vacuum air valve 34 can be reduced, so that the vacuum air valve 34 does not protrude from the top surface of the positioning ring 325, thereby reducing the height requirement of the positioning ring 325.

Fig. 15 is a schematic view showing the structure of the vacuum air valve 34 shown in fig. 10 in a natural state. Fig. 16 is a schematic view showing the structure of the vacuum air valve 34 shown in fig. 12 in a vacuumized state.

As shown in fig. 15 and 16, and in conjunction with fig. 10 and 12, in some embodiments, the cylinder 341 may be made of an elastic material. The cylinder portion 341 may have elasticity such that the cylinder portion 341 can expand and contract in the axial direction thereof, and further the distance between the seal portion 342 and the abutment portion 343 at both ends of the cylinder portion 341 may be changed. For example, in a natural state, the distance between the seal portion 342 and the abutting portion 343 is L ₁, as shown in fig. 15. In the evacuated state, the vacuum air valve 34 receives an upward force, the sealing portion 342 may be forced to move upward, and the abutting portion 343 may abut against the bottom opening of the evacuating port 321, so that the column portion 341 may be stretched under the force, and at this time, the distance between the sealing portion 342 and the abutting portion 343 is L ₂, as shown in fig. 12 and 16. Then L ₁ and L ₂ may satisfy the condition L ₁＜L₂.

It should be noted that, in other embodiments, the vacuum gas valve 34 may be integrally made of an elastic material, so that the vacuum gas valve 34 may be integrally elastic.

As shown in fig. 10, 14 and 15, in some embodiments, the vacuum port 321 on the lid 32 has a height H. The height H of the vacuum hole 321 of the cap 32 may be a distance between the sealing surface 322 and the bottom of the stopper 3231, as shown in fig. 14.

In a natural state, the vacuum gas valve 34 may satisfy the condition of L ₁ < H. Thus, when the vacuum valve 34 is installed at the vacuum pumping port 321, the sealing portion 342 of the vacuum valve 34 can be abutted against the sealing surface 322, and the abutting portion 343 of the vacuum valve 34 can be abutted against the bottom opening of the vacuum pumping port 321, so that the distance between the sealing portion 342 and the abutting portion 343 is prolonged to H, and the cylinder portion 341 is in a stretched state. At this time, the elastic force generated by the elongated deformation of the cylindrical portion 341 can tightly adhere the sealing portion 342 to the sealing surface 322, so that the sealing performance of the vacuum air valve 34 is improved, and the sealing performance of the vacuum fresh-keeping box 3 can be effectively improved.

Note that, in a natural state, the specific parameter L ₁ of the distance between the seal portion 342 and the abutment portion 343 may be adjusted as needed under the condition that L ₁ < H is satisfied, and the specific limitation is not given here.

As shown in fig. 12 and 16, in some embodiments, when the vacuum-pumping joint 4 pumps the vacuum-pumping port 321, the vacuum gas valve 34 receives an upward force, and the cylinder portion 341 can be elongated such that the distance between the sealing portion 342 and the abutting portion 343 satisfies the condition of L ₂ > H. At this time, the abutting portion 343 may be kept abutting against the bottom opening of the vacuum suction port 321, and separate the sealing portion 342 from the sealing surface 322, and further may form a second vent gap communicating with the first vent gap between the sealing portion 342 and the sealing surface 322. In this way, the second ventilation gap can be communicated with the storage cavity 310 inside the vacuum preservation box 3 through the first ventilation gap, and then the storage cavity 310 inside the vacuum preservation box 3 can be communicated with the vacuumizing connector 4 through the first ventilation gap and the second ventilation gap. At this time, the vacuum pump can pump the air inside the vacuum preservation box 3 through the vacuumizing connector 4, so as to vacuumize the inside of the vacuum preservation box 3.

In the evacuated state, the specific parameter L ₂ of the distance between the seal portion 342 and the contact portion 343 may be adjusted as needed under the condition that L ₂ > H is satisfied, and is not particularly limited herein.

As shown in fig. 10 and 15, in some embodiments, the vacuum gas valve 34 may include an indicator bubble 344. The indicator bubble 344 may be provided at the top of the column portion 341. The indicator bubble 344 may protrude from the top of the column portion 341 in an arc shape. A central bore 345 may be provided within the cylindrical portion 341. The bottom end of the central bore 345 may be in communication with the storage cavity 310. The indicator bubble 344 may be closed and attached to the top end of the central aperture 345.

In a natural state, the indication bubble 344 may protrude outside the top of the column 341, so as to remind the user that the vacuum fresh-keeping box 3 is in a state of not being vacuumized.

When the storage cavity 310 is vacuumized, the air pressure inside the storage cavity 310 is lower, and the air pressure inside the storage cavity 310 is smaller than the air pressure outside the vacuum preservation box 3. The indicator bubble 344 may be trapped at the top of the cylinder 341 by the pressure differential across the vacuum valve 34. In this way, the user can be reminded that the vacuum fresh box 3 is in a low pressure state or a vacuum state. In addition, the user can determine the vacuum degree of the vacuum fresh-keeping box 3 according to the sinking depth of the indication bubble 344, thereby improving the convenience of the user.

As shown in fig. 10 and 16, in some embodiments, the vacuum gas valve 34 may include a handle portion 346. The handle portion 346 may be ring-shaped and circumferentially arranged around the circumferential side of the top of the cylinder portion 341. The handle portion 346 may be provided above the sealing portion 342 at a spaced apart relationship. The handle portion 346 may be located outside the vacuum suction port 321. A handle groove 347 may be formed between the handle portion 346 and the sealing portion 342. The catch groove 347 is recessed in a circumferential direction in an annular shape in a peripheral wall of the top of the cylinder 341. Thus, when the vacuum fresh-keeping box 3 needs to be opened, the user can hold the handle slot 347, manually lift the handle 346 to enable the vacuum air valve 34 to be subjected to upward force, and further enable the sealing part 342 to move upward, the column 341 is stressed to be elongated, the distance between the sealing part 342 and the abutting part 343 is larger than the height H of the vacuumizing port 321, a second ventilation gap can be formed between the bottom surface of the sealing part 342 and the sealing surface 322, air outside the vacuum fresh-keeping box 3 can flow into the storage cavity 310 inside the vacuum fresh-keeping box 3 through the second ventilation gap and the first ventilation gap, pressure relief of the vacuum fresh-keeping box 3 is achieved, and the box cover 32 can be easily opened.

While the utility model has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present utility model may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A vacuum fresh-keeping box, characterized by comprising:

Wherein the vacuum gas valve is configured to:

2. The vacuum fresh-keeping box according to claim 1, wherein the bottom of the box cover is convexly provided with a stop rib, and the stop rib is circumferentially arranged on the periphery of the bottom of the vacuumizing port;

The abutting part abuts against the stop rib.

3. The vacuum preservation box according to claim 2, wherein a plurality of stopping parts are convexly arranged at the bottom of the stopping rib, and the stopping parts are circumferentially arranged at intervals on the circumferential side of the bottom of the vacuumizing port;

the ventilation groove is communicated with the first ventilation gap and the storage cavity.

4. The vacuum fresh-keeping box according to claim 1, wherein the top surface of the box cover is provided with a positioning ring in a protruding manner, and the positioning ring is circumferentially arranged on the periphery of the vacuumizing port and the sealing surface.

5. The vacuum fresh-keeping box according to claim 4, wherein the top surface of the box cover is concavely provided with a sealing groove, and the sealing groove is circumferentially arranged on the periphery of the top of the vacuumizing port;

The sealing surface is formed on the bottom surface of the sealing groove, the sealing part is arranged in the outline of the sealing groove, and the positioning ring is circumferentially arranged on the periphery side of the sealing groove.

6. The vacuum fresh-keeping box according to claim 1, wherein the vacuum gas valve comprises:

The indication bubble is arranged at the top of the column body;

A central hole is formed in the column body, and the bottom end of the central hole is communicated with the storage cavity;

the indicator bubble is connected to the top end of the central hole in a sealing way;

in a natural state, the indicating bubbles are protruded outside the top of the column body;

When the storage cavity is vacuumized, the indicating bubbles are trapped at the top of the column part.

7. The vacuum fresh-keeping box according to claim 1, wherein the vacuum gas valve comprises:

The handle part is annular and circumferentially surrounds the periphery side of the top of the column part, and is arranged above the sealing part at intervals;

The handle groove is annular and circumferentially surrounds the peripheral wall of the top of the cylinder part in a concave manner.

8. A refrigeration appliance, comprising:

A case forming a housing outside the refrigeration apparatus, a refrigeration compartment being formed in the case;

The refrigerator door is arranged on the refrigerator body and used for opening and closing the refrigeration compartment;

a vacuum preservation box arranged on the box door, wherein the vacuum preservation box adopts the vacuum preservation box as set forth in any one of claims 1-5.

9. The refrigeration apparatus of claim 8 wherein said refrigeration apparatus comprises:

the door shelf is arranged on the side wall of the refrigerator door facing the refrigeration compartment;

the vacuum preservation box is detachably arranged on the door shelf.

10. The refrigeration apparatus of claim 8 wherein said refrigeration apparatus comprises:

the vacuumizing assembly is used for vacuumizing the vacuum preservation box and comprises the following components:

the vacuumizing connector is arranged on the box door in a turnover manner and is arranged above the vacuum preservation box;

The vacuumizing pump is arranged in the box door;

The vacuumizing pipe is arranged in the box door, one end of the vacuumizing pipe is connected with the vacuumizing pump, and the other end of the vacuumizing pipe is connected with the vacuumizing joint;

When the vacuumizing connector is turned over, the vacuumizing connector can be in butt joint with the vacuumizing port, and the vacuumizing pump can vacuumize the storage cavity through the vacuumizing pipe, the vacuumizing connector and the vacuumizing port.