CN213514582U

CN213514582U - Refrigerator with a door

Info

Publication number: CN213514582U
Application number: CN202021805758.XU
Authority: CN
Inventors: 朱小兵; 程学丽; 张振兴; 姜波; 王磊; 娄喜才; 崔展鹏
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-06-22
Anticipated expiration: 2030-08-25
Also published as: WO2022042422A1

Abstract

The utility model provides a refrigerator, which comprises a box body, wherein a storage chamber is arranged in the box body, and the refrigerator also comprises a plurality of air-conditioning fresh-keeping devices, and each air-conditioning fresh-keeping device comprises a storage container and an air-conditioning membrane assembly; a fresh-keeping space is defined in each storage container, a plurality of storage containers are arranged in the storage room, and the preset storage temperature in at least one storage container is different from the preset storage temperature in the rest storage containers; each gas regulating membrane component is arranged on the corresponding storage container, and the space around the gas regulating membrane component is communicated with the corresponding fresh-keeping space, so that more oxygen in the fresh-keeping space flows out of the fresh-keeping space relative to nitrogen. The fresh-keeping device is provided with at least more than two air-conditioning chambers, namely at least more than two air-conditioning chambers, each air-conditioning chamber is provided with a respective air-conditioning membrane component, each air-conditioning chamber is provided with a temperature value range, the fresh-keeping requirements of different food materials are met, and the intelligentization and intelligentization degree is high.

Description

Refrigerator with a door

Technical Field

The utility model relates to a cold-stored frozen storing technical field especially relates to a refrigerator.

Background

The refrigerator is a refrigerating device for keeping constant low temperature, and is a civil product for keeping food or other articles in a constant low-temperature cold state. With the improvement of living standard of people, a new height is provided for the preservation of food materials, and the preservation of food is more urgent. Most refrigerators in the market at present only have basic food material cold storage and freezing storage functions, food material preservation is not distinguished in detail, and the preservation function cannot meet the requirements of customers. Some refrigerators have independent fresh-keeping chambers, but the temperature range is single, and only one type of food can be placed in the refrigerator. Some complaints that the fresh-keeping requirement of the food materials for the customers cannot be met are frequently heard.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at overcoming at least one defect that current refrigerator is fresh-keeping, provide a novel refrigerator to make the refrigerator have more than two at least air-conditioned rooms, each air-conditioned room all has respective air-conditioned membrane unit, and each air-conditioned room all has the temperature value scope of oneself, realizes the fresh-keeping demand of different edible materials.

The utility model provides a refrigerator, which comprises a refrigerator body, wherein a storage chamber is arranged in the refrigerator body, and the refrigerator also comprises a plurality of air-conditioning preservation devices, and each air-conditioning preservation device comprises a storage container and an air-conditioning membrane assembly;

a fresh-keeping space is defined in each storage container, a plurality of storage containers are arranged in the storage room, and the preset storage temperature in at least one storage container is different from the preset storage temperature in the rest storage containers;

each gas-regulating membrane module is arranged in the corresponding storage container, the space around the gas-regulating membrane module is communicated with the corresponding fresh-keeping space, each gas-regulating membrane module is provided with at least one gas-regulating membrane and one oxygen-enriched gas collecting cavity, and the gas-regulating membrane modules are configured to enable oxygen in airflow around the gas-regulating membrane module to penetrate through the gas-regulating membrane more than nitrogen in the airflow around the gas-regulating membrane module into the oxygen-enriched gas collecting cavity, so that more oxygen in the fresh-keeping space flows out of the fresh-keeping space more than nitrogen in the airflow around the.

Optionally, the refrigerator further comprises an air extractor having an air extraction opening, and each oxygen-enriched gas collection cavity is communicated with the air extraction opening.

Optionally, the pumping port is communicated with the plurality of oxygen-enriched gas collecting cavities through a tee joint; or the like, or, alternatively,

the pumping hole is communicated with the oxygen-enriched gas collecting cavities in a controlled mode through a control valve.

Optionally, the storage compartments are multiple, and the plurality of controlled atmosphere preservation devices are respectively arranged in the plurality of storage compartments.

Optionally, the number of the storage compartments is at least two, the storage compartments include a first storage compartment and a second storage compartment, and the plurality of controlled atmosphere preservation devices are respectively arranged in the first storage compartment and the second storage compartment.

Optionally, a compressor bin is further arranged inside the box body, and the air exhaust device is arranged in the compressor bin.

Optionally, the refrigerator also comprises a plurality of moisture permeation devices,

the rear part of the upper surface of the modified atmosphere preservation device is provided with a communication port, each moisture permeable device is arranged at the communication port of one modified atmosphere preservation device, and the moisture permeable device is provided with a moisture permeable film, so that moisture in the preservation space can be unidirectionally permeated to the outer side of the preservation space through the moisture permeable film.

Optionally, the refrigerator further comprises a plurality of air supply devices, each air supply device is a vortex fan or a centrifugal fan, each air supply device is arranged in the storage room and above one air conditioning and fresh keeping device, and an air inlet of each air supply device faces to part or all of the corresponding moisture permeable film.

Optionally, the refrigerator further comprises a plurality of air guiding devices;

the rear wall of the storage compartment is provided with an air supply outlet, each air guide device is arranged on the upper side of one air-conditioned preservation device, the rear end of each air guide device is connected with the air supply outlet, and the air guide devices are configured to supply air to at least the front part and/or the front part of the air-conditioned preservation device;

the lower surface of the air guide device is provided with a yielding groove extending along the front-back direction, and the air supply device is installed at the rear end of the yielding groove;

the upper limiting surface of the abdicating groove is obliquely arranged, the front end of the upper limiting surface is connected to the lower surface of the air guide device, and the rear end of the upper limiting surface is higher than the front end of the upper limiting surface.

Optionally, the refrigerator further comprises a bimetallic strip heat conducting device,

the air extraction device further comprises a pump head with a pump outlet and a motor, wherein the motor is provided with a motor shell;

the exhaust pipe is wound on the motor shell, and an inlet of the exhaust pipe is communicated with an outlet of the pump on the pump head;

one end of the bimetallic strip heat conducting device is thermally connected with the motor shell, and the other end of the bimetallic strip heat conducting device is thermally connected with the pump head so as to transfer heat generated by the motor to the pump head and disconnect heat transfer after the temperature of the pump head reaches a preset temperature.

The utility model discloses an in the refrigerator, because have the gas-adjusting fresh-keeping device more than two at least, have the gas-adjusting room more than two at least promptly, each gas-adjusting room all has respective gas-adjusting membrane module to each gas-adjusting room all has the temperature value scope of oneself, realizes the fresh-keeping demand of different edible materials.

Furthermore, at least more than two air-conditioning preservation devices share one set of air extraction device, so that the product cost is reduced to the minimum while the preservation requirement is met. And the three-way joint or the controllable three-way valve is adopted for gas circuit connection, so that the structure is simple, and the production operation is convenient. The air exhaust device is placed in the press chamber, so that the occupation of the indoor volume of the refrigerator is reduced, the volume ratio of the refrigerator is improved as much as possible, and meanwhile, the noise generated when the air exhaust device works is reduced.

Further, the utility model discloses an in the refrigerator, because have and pass through wet device and vortex fan or centrifugal fan, vortex fan or centrifugal fan's air intake can be towards moisture permeable membrane, can accelerate the fresh-keeping device outside air of gas regulation and flow, reduce the fresh-keeping device outside humidity value of gas regulation, especially moisture permeable membrane outside humidity value, form great humidity difference, prevent moisture permeable membrane efficiency reduction or complete failure messenger fresh-keeping space inside steam can't discharge, improve and pass through wet efficiency, and then reduce the steam that eats the material production and form condensation or frost in inside the gathering, it is even also to make indoor volume distribution of storing room simultaneously, it is intelligent, wisdom degree is high as early as possible.

Further, the utility model discloses an in the refrigerator, because have air ducting, guide the air current to the front portion of gas-regulating fresh-keeping device, can prevent that cold wind from directly blowing the back wall of gas-regulating fresh-keeping device, prevent that back wall local temperature from crossing including the wall forms the frosting excessively, influence user experience, can guarantee that the air supply can not directly blow the back wall of gas-regulating fresh-keeping device and arouse the frosting.

Further, the utility model discloses an in the refrigerator, vortex fan or centrifugal fan and the special arrangement form of the recess of stepping down can make storing room compact structure, and is rationally distributed, and the air current of being convenient for flows and the noise is low, gives other people comfortable sensation.

Furthermore, in the refrigerator of the utility model, by arranging the temperature control type heat conduction device, when the temperature of the pump head is low, the pump head is prevented from frosting and freezing by utilizing the high-temperature heating generated by the motor; when the pump head temperature is high, the heat transfer is disconnected, and the high temperature on the motor is prevented from continuously heating the pump head. The pump head can be prevented or frosted, the performance of the vacuum pump is guaranteed, and the reliability of the vacuum pump is prolonged. The pump mouth is connected the blast pipe, and the motor temperature reduction is realized through temperature conduction to the cold air through the blast pipe, and the motor temperature reduction is realized through blast pipe forced convection to the high-speed air, falls the noise through the realization of extension exhaust total length. The service life of the air exhaust device is prevented from being influenced by the overhigh temperature of the motor, the noise generated by the air exhaust device can be reduced, and the user experience effect is improved. The temperature control type heat conduction device can also prevent the heat dissipation effect of the motor from being influenced by continuously heating the pump head.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic front view of a refrigerator according to an embodiment of the present invention;

fig. 2 is a schematic rear view of a refrigerator according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic partial structure view of the structure shown in FIG. 2;

fig. 4 is a schematic structural view of an air-conditioned fresh keeping apparatus in a refrigerator according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of the modified atmosphere preservation apparatus shown in FIG. 4;

FIG. 6 is a schematic sealing schematic diagram of the modified atmosphere preservation apparatus shown in FIG. 4;

FIG. 7 is a schematic exploded view of the modified atmosphere preservation apparatus shown in FIG. 4;

FIG. 8 is a schematic partial block diagram of an air extractor in the refrigerator shown in FIG. 1.

Detailed Description

Fig. 1 is a schematic front view of a refrigerator according to an embodiment of the present invention. As shown in fig. 1 and with reference to fig. 2 and 3, an embodiment of the present invention provides a refrigerator. The refrigerator comprises a refrigerator body 20, a plurality of air-conditioning preservation devices 30 and a refrigerating system.

A storage compartment is provided in the case 20. For example, the refrigerator 20 includes a refrigerating compartment 21, a freezing compartment 22, and a temperature-changing compartment 23. The storage temperature of the refrigerated compartment 21 is generally between 2 ℃ and 10 ℃, preferably between 3 ℃ and 8 ℃. The temperature in the freezer compartment 22 typically ranges from-14 ℃ to-22 ℃. The temperature-changing chamber 23 can be adjusted as required to store suitable food, and optionally, the temperature-changing chamber 23 has a temperature ranging from-24 ℃ to 10 ℃. Preferably, the temperature of the temperature-changing compartment 23 varies in the range of-8 ℃ to 0 ℃. The refrigerating system is configured to provide cold energy to the storage compartment and can be composed of a compressor, a condenser, a throttling device, an evaporator and the like.

As shown in fig. 1, each modified atmosphere preservation device 30 may include a storage vessel and a modified atmosphere module 42. A fresh-keeping space is limited in each storage container. A plurality of storing containers set up in the storing room, and the storing temperature of predetermineeing in at least one storing container is different with the storing temperature of predetermineeing in the remaining storing container. For example, the storage compartments are multiple, the controlled atmosphere preservation devices 30 are respectively arranged in the storage compartments, and the preset temperature in each storage compartment can be different, so that the preset storage temperature in the controlled atmosphere preservation devices 30 is different. For another example, the storage compartments include at least two storage compartments, including a first storage compartment and a second storage compartment, and the plurality of controlled atmosphere preservation devices 30 are respectively disposed in the first storage compartment and the second storage compartment. Further, the first storage compartment may be a refrigerating compartment 21, and the second storage compartment may be a temperature-changing compartment 23. For example, a plurality of storage containers may be disposed in one storage compartment, but the preset storage temperatures in the plurality of storage containers are different.

Each gas-modified membrane module 42 is mounted to a corresponding storage container and the space around the gas-modified membrane module 42 is in communication with a corresponding fresh-keeping space, each gas-modified membrane module 42 having at least one gas-modified membrane and one oxygen-enriched gas collection chamber and being configured such that more oxygen in the gas stream in the space around the gas-modified membrane module 42 permeates the gas-modified membrane into the oxygen-enriched gas collection chamber than nitrogen therein, so that more oxygen in the fresh-keeping space flows out of the fresh-keeping space than nitrogen.

In the embodiment of the present invention, because the air-conditioning preservation device 30 has at least two or more air-conditioning chambers, each air-conditioning chamber has its own air-conditioning membrane module 42, and each air-conditioning chamber has its own temperature value range, the preservation requirements of different food materials are realized.

In some embodiments of the present invention, the refrigerator further comprises an air extracting device 70, the air extracting device 70 has an air extracting opening, and each oxygen-enriched gas collecting cavity is communicated with the air extracting opening through the outlet pipeline 34. For example, the pumping port is communicated with the plurality of oxygen-enriched gas collecting cavities through a tee joint. Also for example, the pumping port is in controlled communication with the plurality of oxygen-enriched gas collection chambers through a control valve. At least more than two air-conditioning preservation devices 30 share one set of air extraction device 70, so that the product cost is reduced to the minimum while the preservation requirement is met. And the three-way joint or the controllable three-way valve 80 is adopted for gas circuit connection, so that the structure is simple, and the production operation is convenient.

Further, a compressor bin for placing a compressor is further arranged inside the box body, and the air extraction device 70 is arranged in the compressor bin.

When the air extracting device 70 in the compressor bin works and the three-way joint is used for air extraction control, the air-conditioning membrane module 42 in the refrigerating chamber and the air-conditioning membrane module 42 in the low-temperature chamber are simultaneously extracted, and the working time determines the air extraction time according to the fact that the air extraction time required in the air-conditioning membrane module 42 in the refrigerating chamber and the air-conditioning membrane module 42 in the low-temperature chamber is longer, so that the air extraction quality is ensured, and the preservation requirement is met. When the three-way valve 80 is used for air extraction control, the air extraction quality of the air adjustment membrane module 42 in the refrigeration compartment 21 and the air extraction quality of the low-temperature indoor air adjustment membrane module 42 are respectively detected, and air extraction is stopped when the requirements are met. The temperature of each fresh-keeping chamber is different, for example, the temperature in the cold storage chamber 21 is set to be 5-8 ℃, which is beneficial to the fresh-keeping requirements of fruits, vegetables and the like; the temperature in the low-temperature chamber, such as the variable-temperature chamber 23, is set to be 0-minus 3 ℃, which is favorable for the fresh-keeping requirement of food materials such as meat, seafood and the like.

In some embodiments of the present invention, the refrigerator may further include a plurality of moisture permeation devices 41 and a plurality of air supply devices. The atmosphere-controlled fresh-keeping device 30 is internally limited with a fresh-keeping space, and the rear part of the upper surface of the atmosphere-controlled fresh-keeping device 30 is provided with a communication port. The moisture permeable device 41 can be installed at the communication port, and the moisture permeable device 41 has a moisture permeable film so as to make moisture flow in a single direction, and when the humidity in the fresh keeping space is greater than the humidity outside the fresh keeping space, the moisture in the fresh keeping space flows out of the fresh keeping space through the moisture permeable film. That is to say, the moisture permeable film makes the moisture in the fresh-keeping space unidirectionally permeate to the outside of the fresh-keeping space through the moisture permeable film, so that the fresh-keeping space has the humidity meeting the requirement.

The air supply device can be a vortex fan 50 or a centrifugal fan, the air supply device is arranged in the storage room and is positioned above a corresponding air conditioning and fresh keeping device 30, and the air inlet of the vortex fan 50 or the centrifugal fan faces to part or all of the corresponding moisture permeable film. When the air supply device is started, the air flow outside the air-conditioned freshness retaining device 30 can be accelerated, particularly the air flow outside the moisture permeable device 41 is accelerated, the air circulation near the moisture permeable device 41 is accelerated, the humidity value outside the air-conditioned freshness retaining device 30 is reduced, the phenomenon that the moisture permeable film efficiency is reduced or completely loses efficacy to enable the water vapor in the freshness retaining space to be incapable of being discharged is prevented, the moisture permeable efficiency is improved, frosting is further prevented, and the intelligent degree are high.

In some embodiments of the present invention, as shown in fig. 4, 5 and 6, the refrigerator further includes a plurality of air guiding devices 60. An air supply outlet 24 can be arranged on the rear wall of the storage chamber, and an air return outlet 25 is arranged at the lower part of the rear wall of the storage chamber and used for refrigerating airflow circulation in the storage chamber. The return air opening 25 is located below the supply air opening 24. The air guide device 60 is arranged on the upper side of the air-conditioning preservation device 30, the rear end of the air guide device 60 is connected to the air supply outlet 24, and the air guide device 60 is configured to supply air to at least the front part and/or the front part of the air-conditioning preservation device 30. The air guide device 60 guides the air flow to the front part, so that the rear wall of the cold air direct-blowing controlled atmosphere fresh-keeping device 30 can be prevented, the frosting formed on the inner wall surface due to too low local temperature of the rear wall surface is prevented, the user experience is influenced, and the condition that the frosting is caused by the fact that the air supply is not directly blown to the rear wall surface of the drawer can be guaranteed. Further, the air guiding device 60 is spaced from the upper surface of the air-conditioning and freshness-retaining device 30, so that the air flow can flow around the air-conditioning and freshness-retaining device 30 in the storage compartment.

In some embodiments of the present invention, the modified atmosphere module 42 is preferably disposed at the front side of the moisture permeation device 41. The lower surface of the air guide device 60 is provided with a yielding groove 61 extending in the front-rear direction, and the vortex fan 50 or the centrifugal fan is mounted at the rear end of the yielding groove 61. The structure is compact, the volume is small, and the air flow of the air supply device is convenient to blow. The outlet of the vortex fan 50 or the centrifugal fan may face forward. Further, the upper limiting surface of the relief groove 61 is disposed obliquely, the front end of the upper limiting surface is connected to the lower surface of the air guiding device 60, and the rear end of the upper limiting surface is higher than the front end of the upper limiting surface. An air guide duct communicating with the air supply opening 24 is provided in the air guide device 60, and a plurality of outlets are provided on the lower surface of the air guide device 60 and/or a plurality of outlets are provided on the front surface of the air guide device 60. For example, the air guide device 60 has a bottom plate defining an air guide duct and a front grill provided at a front end of the bottom plate. The bottom plate is provided with a yielding groove 61, an outlet is formed in the bottom plate, the front grating is vertically arranged, and the grating holes are outlets.

In some embodiments of the present invention, the storage container of the modified atmosphere preservation apparatus 30 comprises a drawer 31 and an upper cover 32, the drawer 31 is slidably mounted in the storage compartment through a sliding rail assembly 39, and the upper cover 32 is used for sealing the upper opening of the drawer 31. For the convenience of taking and closing the drawer 31, the modified atmosphere preservation device 30 further comprises a lifting device, the upper cover 32 is arranged on the upper side of the drawer 31 in a vertically movable manner, and the drawer 31 is configured to drive the upper cover 32 to descend through the lifting device when moving backwards so as to close the drawer 31. The moisture permeation device 41 and the air conditioning membrane module 42 are mounted on the upper cover 32.

The utility model discloses an in some embodiments, in some embodiments of the utility model, the refrigerator can still include humidity detection device, and humidity detection device configures to the humidity that detects in the fresh-keeping space and/or fresh-keeping space outside and be in the indoor humidity in storing room. The vortex fan 50 or the centrifugal fan is configured to be activated according to the humidity value detected by the humidity detecting means. For example, the humidity detection means includes a first humidity detection means and a second humidity detection means. First humidity detection device sets up in fresh-keeping space, detects the humidity in the fresh-keeping space and obtains first humidity value. The second humidity detection device is arranged outside the fresh-keeping space and in the storage room, and the humidity outside the fresh-keeping space and in the storage room is detected to obtain a second humidity value. The vortex fan 50 or the centrifugal fan may be configured to turn on when a difference between the first humidity value and the second humidity value is less than or equal to a first preset value, and turn off until a difference between the first humidity value and the second humidity value is less than a second preset value. The second preset value is smaller than the first preset value.

When the humidity sensor is used specifically, whether the difference value between the first humidity value and the second humidity value is larger than a first preset value or not is judged. If not, the vortex fan 50 or the centrifugal fan is started, and if so, the vortex fan 50 or the centrifugal fan is not started. And further, continuously judging whether the difference value between the first humidity value and the second humidity value is smaller than a second preset value, wherein the second preset value is smaller than the first preset value. If so, the vortex fan 50 or the centrifugal fan is turned off. Otherwise, the vortex fan 50 or the centrifugal fan is kept in operation. The opening of the vortex fan 50 or the centrifugal fan is controlled according to the difference value between the first humidity value and the second humidity value, when the moisture permeation device 41 conducts moisture unidirectional permeation work, the humidity in the fresh-keeping space is gradually reduced, the external humidity is gradually increased, the difference value between the two is smaller and smaller, and when the difference value is smaller than or equal to a first preset value, the vortex fan 50 or the centrifugal fan is opened, and the moisture permeation efficiency is improved. Further, the humidity in the fresh-keeping space is gradually reduced again, the external humidity is reduced under the action of the vortex fan 50 or the centrifugal fan, then the reduced humidity is unchanged on the basis, the reduced humidity or the increased speed is reduced, and finally the difference between the inside and the outside of the fresh-keeping space is smaller and smaller, when the difference between the humidity in the fresh-keeping space and the humidity outside is smaller, the humidity in the fresh-keeping space can be considered to be reduced, the requirement is met, the difference between the inside and the outside is not enough to enable the moisture permeable device 41 to work, the vortex fan 50 or the centrifugal fan is stopped, and energy is saved.

It should be noted that, for some reason, for example, when the humidity in the storage compartment is suddenly increased, the vortex fan 50 or the centrifugal fan may be in the off state, if the difference between the first humidity value and the second humidity value is smaller than the first preset value, or even smaller than the second preset value, the vortex fan 50 or the centrifugal fan is started first, and after the vortex fan 50 or the centrifugal fan is started, the humidity value outside the fresh-keeping space is obviously reduced, so as to ensure the moisture permeation efficiency of the moisture permeation device 41. Optionally, in order to further improve the control accuracy and prevent the misoperation caused by the condition that the humidity inside and outside the fresh-keeping space is relatively high, when judging whether the difference value between the first humidity value and the second humidity value is smaller than the second preset value, judging whether the first humidity value is larger than the preset humidity value; and when the difference value between the first humidity value and the second humidity value is smaller than a second preset value, and the first humidity value is smaller than or equal to the preset humidity value, the vortex fan 50 or the centrifugal fan is closed.

In some embodiments of the present invention, the storage container of the controlled atmosphere preservation device 30 further comprises a barrel 38 having a front opening, the drawer 31 is installed in the barrel 38 in a manner of moving back and forth, and the barrel 38 is installed in the storage compartment. The upper wall of the cylinder 38 has the floor and the front grill of the air guide device 60, i.e., the floor and the front grill may be integrally formed and serve as the upper wall of the cylinder. Further, the box 20 further includes an upper outer cover plate 35 and a lower outer cover plate 36, the upper outer cover plate 35 and the lower outer cover plate 36 define the storage compartment, the upper outer cover plate 35 covers the upper side, the left side, the right side, and the rear side of the cylinder 38, and defines an air guide duct of the air guide device 60 with the upper wall of the cylinder 38. The air guide device 60 may be said to include the upper outer cover 35 and the upper wall of the cylinder 38. The lower outer cover plate 36 is provided to the remaining portions of the lower, left and right sides and rear side of the cylinder 38.

In some embodiments of the present invention, as shown in fig. 6 and 7, the lifting device includes a lifting bracket 71, a connecting bracket 72, a spring 73, a roller 74, and a pressing table 75.

The elevating bracket 71 is mounted on the cylinder 38, the connecting frame 72 is mounted on the elevating bracket 71 to be movable up and down, the upper cover 32 is mounted on the connecting frame 72, the spring 73 is used for urging the connecting frame 72 to move up, and the roller 74 is rotatably mounted on the lower end of the connecting frame 72 along the axis extending in the left-right direction. The pressing platform 75 is disposed on a side wall of the drawer, and is used for gradually moving the roller 74 downwards along the inclined side surface of the pressing platform 75 during the inward movement of the drawer 31, so as to drive the upper cover 32 to move downwards for sealing. After the drawer 31 is completely pushed into the cylinder 38, the roller 74 is located at a lower side of the lower horizontal surface of the pressing table 75 to keep the upper cover 32 in a state of closing the drawer 31, or to keep the upper cover 32 in a state of closing the cylinder 38, thereby keeping the drawer 31 closed.

In some embodiments of the present invention, as shown in fig. 8, the refrigerator further comprises an exhaust tube 93, the air-extracting device 70 further comprises a pump head 91 having a pump outlet and a motor, the motor comprising a motor housing 92. An exhaust tube 93 is wound around the motor housing 92, and an inlet of the exhaust tube 93 communicates with an outlet of the pump on the pump head 91. Specifically the inlet of the exhaust pipe 93 communicates with the outlet of the pump through a flexible pipe 94. The flexible tube 94 may be a plastic tube. Specifically, air exhaust device 70 is the vacuum pump, and the vacuum pump generates heat and concentrates on the motor part, also is the key position of cooling, connects exhaust pipe 93 at the pump of vacuum pump for the export plastic pipe, and the cold air passes through exhaust pipe 93 and realizes the motor temperature reduction through the temperature conduction, and the high-speed air passes through exhaust pipe 93 and forces the convection current to realize the motor temperature reduction, falls the noise through the total length realization of extension exhaust.

Further, the refrigerator further includes a bimetal heat conduction device 95, the motor housing 92 and the pump head 91 are both thermally connected to the bimetal heat conduction device 95, and the bimetal heat conduction device 95 is configured to transfer heat generated by the motor to the pump head 91 and disconnect the heat transfer after the temperature of the pump head 91 reaches a preset temperature. By arranging the bimetallic strip heat conduction device 95, when the temperature of the pump head 91 is low, the pump head 91 is connected with the motor shell 92, and the pump head 91 is prevented from frosting and freezing by utilizing the high-temperature heating of the pump head 91; when the pump head 91 is hot, the heat transfer is disconnected, preventing that high temperature from continuing to heat the pump head 91 on the motor. After the temperature is reduced, the bimetal thermal device 95 is reset for heat transfer. The bimetallic strip heat conducting device 95 is utilized, so that the structure is simple, the cost is low, and the service life is long. Further, the motor shell 92 is directly used for cooling, the structure of the motor and the air exhaust device 70 is not changed, the practicability is high, and the cost is low.

In some embodiments of the present invention, the exhaust pipe 93 is made of a heat conductive material, and the bimetallic strip heat conducting device 95 is thermally connected to the motor housing 92 through the exhaust pipe 93. Specifically, the exhaust pipe 93 includes an inlet pipe section, a winding pipe section, and an outlet pipe section, the inlet pipe section and the outlet pipe section being connected to both ends of the winding pipe section, the winding pipe section being wound around the motor case 92. The bimetallic strip thermal conductor 95 is thermally connected to the end of the outlet pipe section which is connected to the wound pipe section. For example, the exhaust pipe 93 is provided with a metal plate 96, and the metal plate 96 is thermally connected to the bimetal thermal conduction device 95. The heat is transferred through the exhaust pipe 93, so that the temperature of the pump head 91 is not increased too fast or too high, the temperature of the pump head 91 is not changed frequently, the bimetallic strip heat conducting device 95 is not operated frequently, and the service life and the performance of the pump head 91 are not affected.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. The refrigerator comprises a refrigerator body, wherein a storage compartment is arranged in the refrigerator body, and the refrigerator is characterized by further comprising a plurality of controlled atmosphere preservation devices, wherein each controlled atmosphere preservation device comprises a storage container and a controlled atmosphere membrane assembly;

2. The refrigerator of claim 1, further comprising a gas extraction device having a gas extraction opening, each of the oxygen-enriched gas collection chambers being in communication with the gas extraction opening.

3. The refrigerator according to claim 2,

the extraction opening is communicated with the oxygen-enriched gas collection cavities through a tee joint; or the like, or, alternatively,

4. The refrigerator according to claim 1,

the storage compartments are multiple, and the air-conditioning preservation devices are respectively arranged in the storage compartments.

5. The refrigerator according to claim 1,

the storage compartments are at least two and comprise a first storage compartment and a second storage compartment, and the plurality of controlled atmosphere preservation devices are respectively arranged in the first storage compartment and the second storage compartment.

6. The refrigerator according to claim 2,

the inside compressor storehouse that still is provided with of box, air exhaust device set up in the compressor storehouse.

7. The refrigerator of claim 1, further comprising a plurality of moisture permeable devices,

8. The refrigerator of claim 7, further comprising a plurality of air supply devices, wherein each air supply device is a vortex fan or a centrifugal fan, each air supply device is arranged in the storage compartment and above one air-conditioning and fresh-keeping device, and an air inlet of each air supply device faces to part or all of the area of the corresponding moisture-permeable film.

9. The refrigerator of claim 8, further comprising a plurality of air guides;

10. The refrigerator of claim 2, further comprising a bimetal heat conducting device and an exhaust pipe;