CN106766521B

CN106766521B - Refrigerating and freezing device

Info

Publication number: CN106766521B
Application number: CN201611132799.5A
Authority: CN
Inventors: 王磊; 姜波; 毕云龙; 王英星
Original assignee: Haier Smart Home Co Ltd
Current assignee: Haier Smart Home Co Ltd
Priority date: 2016-12-09
Filing date: 2016-12-09
Publication date: 2023-09-22
Anticipated expiration: 2036-12-09
Also published as: CN106766521A

Abstract

The application provides a refrigerating and freezing device. The refrigerating and freezing device comprises: the box body is internally provided with a storage container with an air-conditioned fresh-keeping space; the gas separator is provided with a gas regulating film, a first gas collecting cavity and a second gas collecting cavity, the gas regulating film is positioned between the first gas collecting cavity and the second gas collecting cavity, and the rest of the gas which is removed from the air which enters the first gas collecting cavity and enters the second gas collecting cavity through the gas regulating film enters the gas regulating fresh-keeping space; the air pump is arranged at the top of the box body and is communicated with the second gas collecting cavity through a pipeline so as to pump and exhaust the gas penetrating into the second gas collecting cavity to the outside of the gas separator. The refrigerating and freezing device has the advantages of good fresh-keeping effect, low noise and low cost, and can fully fill the top space of the box body.

Description

Refrigerating and freezing device

Technical Field

The application relates to the technical field of refrigerator storage, in particular to a refrigeration and freezing device.

Background

Refrigerators are a kind of refrigerating apparatus that maintains a constant low temperature, and also a kind of civil products that maintain foods or other objects in a constant low temperature cold state. With the improvement of life quality, the consumer demand for preservation of stored foods is also increasing, and especially the demands for color, taste and the like of foods are also increasing. Therefore, the stored food should also ensure that the color, mouthfeel, freshness, etc. of the food remain as unchanged as possible during storage. There is only one type of vacuum preservation in the market at present for better food storage. The frequently adopted vacuum preservation modes are vacuum bag preservation and vacuum storage compartment preservation.

The vacuum bag is adopted for preserving, so that consumers need to vacuumize every time food is stored, the operation is troublesome, and the consumers cannot enjoy the food.

The vacuum storage compartment is adopted for fresh keeping, and the box body and the like are of rigid structures, so that the vacuum state is required to be maintained, the requirement on the vacuumizing system is high, the sealing performance of the refrigerator is high, and the amount of new air which is introduced is large when one article is taken and placed, so that the energy consumption is high. In addition, in a vacuum environment, the food is difficult to receive cold, and is particularly unfavorable for food storage. In addition, because of the vacuum environment, the user needs great effort to open the refrigerator door and the like each time, causing inconvenience to the user. Although some refrigerators may be ventilated into the vacuum storage compartment through a vacuum system, this may cause users to wait for a long time, with poor timeliness. The vacuum time is longer, and the deformation of the refrigerator body and the like is serious, namely the existing refrigerator with a vacuumizing structure cannot well finish vacuum preservation, the strength of the refrigerator body and the like is high, the realization requirement is high, and the cost is high.

Furthermore, the inventors found that: because of the large volume and high cost of nitrogen production equipment traditionally used for controlled atmosphere, the technology is basically limited to various large professional storage (the storage capacity is generally at least 30 tons). It can be said that the adoption of proper gas regulating technology and corresponding devices can economically miniaturize and mute the gas regulating system, so that the gas regulating system is suitable for household or individual users, and is a technical problem which is always desired to be solved by the technicians in the field of gas regulating preservation but is not successfully solved all the time.

Disclosure of Invention

The application aims to overcome at least one defect of the existing refrigerator, and provides a refrigeration and freezing device, which creatively realizes the separation of oxygen in air through a gas separator, and then fills the rest of nitrogen-rich gas into an air-conditioning fresh-keeping space, so that a nitrogen-rich and oxygen-poor gas atmosphere beneficial to food fresh-keeping is obtained in the air-conditioning fresh-keeping space, and the gas atmosphere reduces the strength of oxygen respiration of fruits and vegetables by reducing the content of oxygen in the fruit and vegetable storage space, ensures the basic respiration effect, prevents the fruits and vegetables from performing anaerobic respiration, and further achieves the aim of long-term fresh-keeping of fruits and vegetables.

A further object of the present application is to make full use of the top space and the storage space of a refrigeration and freezer, which results in a compact and energy efficient refrigeration and freezer.

In particular, the present application provides a refrigeration and freezer comprising:

the box body is internally limited with a storage space, a storage container is arranged in the storage space, and an air-conditioning fresh-keeping space is arranged in the storage container;

the gas separator is provided with a gas regulating membrane, a first gas collecting cavity and a second gas collecting cavity, and the gas regulating membrane is positioned between the first gas collecting cavity and the second gas collecting cavity; the air regulating membrane is configured to enable more oxygen in the air in the first gas collecting cavity to permeate through the air regulating membrane into the second gas collecting cavity relative to nitrogen in the air collecting cavity; the first gas collecting cavity is controllably communicated with the external space of the gas separator so that air in the external space of the gas separator enters the first gas collecting cavity, and the first gas collecting cavity is also controllably communicated with the air-conditioning fresh-keeping space so that the rest of the air in the first gas collecting cavity after the air which has penetrated the air-conditioning film and entered the second gas collecting cavity is removed enters the air-conditioning fresh-keeping space; and

the air pump is arranged at the top of the box body and is communicated with the second gas collecting cavity through a pipeline so as to pump and exhaust the gas penetrating into the second gas collecting cavity to the outside of the gas separator.

Optionally, the refrigeration and freezing device further comprises an axial flow fan arranged on the flow path from the first gas collection cavity to the air-conditioned fresh-keeping space and configured to be controlled to start so as to promote the rest of the gas to flow into the air-conditioned fresh-keeping space.

Optionally, the storage container is a drawer assembly comprising:

the drawer cylinder is provided with a forward opening and is arranged in the storage space; and

the drawer body is slidably disposed within the drawer cylinder to operatively withdraw from the forward opening of the drawer cylinder and insert the drawer cylinder inwardly.

Optionally, a receiving space is defined at a rear portion of the top end of the casing to receive the suction pump.

Optionally, the refrigeration chiller further includes a refrigeration system configured to provide refrigeration to the storage space, and the refrigeration system has a compressor mounted within the receiving space.

Optionally, the refrigeration and freezing device further comprises:

the mounting top plate is arranged on the top surface of the accommodating space through a plurality of damping foot pads; and

the sealing box is arranged on the mounting top plate; and is also provided with

The air pump is arranged in the sealing box.

Optionally, heat dissipation holes are formed at both the transverse ends of the top wall and the transverse ends of the rear wall of the accommodating space; the air pump is arranged at one transverse end of the accommodating space.

Optionally, the upper edge of the front wall of the accommodating space is in front of the lower edge; and the storage space comprises a first space positioned in front of the front wall of the accommodating space and a second space positioned below the bottom wall of the accommodating space.

Optionally, the gas separator is disposed inside the storage space and is located at the rear side of the drawer cylinder.

Optionally, the gas separator further comprises a gas collecting box, wherein a horizontally placed supporting frame is arranged in the gas collecting box, the supporting frame and the upper half box body of the gas collecting box jointly define a first gas collecting cavity, and the supporting frame and the lower half box body of the gas collecting box jointly define a second gas collecting cavity; the air-conditioning film is arranged on the supporting frame.

The refrigerating and freezing device comprises the gas separator with the gas regulating film and the two gas collecting cavities, so that the gas is separated into oxygen and nitrogen-rich gas, and the nitrogen-rich and oxygen-poor gas atmosphere which is formed in the gas regulating and fresh-keeping space filled with the nitrogen-rich gas and is beneficial to food fresh-keeping is formed in the gas regulating and fresh-keeping space, and the oxygen content in the fruit and vegetable storage space is reduced in the gas atmosphere, so that the strength of aerobic respiration of fruits and vegetables is reduced, the basic respiration is ensured, and the anaerobic respiration of fruits and vegetables is prevented, so that the aim of long-term fresh-keeping of fruits and vegetables is achieved.

Further, the gas separator in the refrigerating and freezing device is inflatable, so that the air-conditioned fresh-keeping space is provided with sufficient nitrogen-rich gas, the negative pressure problem of the air-conditioned fresh-keeping space adopting the vacuum fresh-keeping technology can be solved, and the user can operate more quickly and conveniently when opening the air-conditioned fresh-keeping space to store and take articles.

Further, since the air pump is arranged at the top of the box body in the refrigeration and freezing device, the top space of the refrigeration and freezing device can be fully utilized, so that the problem that the top storage compartment space of the conventional refrigeration and freezing device cannot be fully utilized due to the fact that the refrigeration and freezing device is high is avoided. Moreover, when the compressor is also provided at the top of the refrigerating and freezing apparatus, the volume of the lower storage space becomes large, and although the total storage space volume of the refrigerating and freezing apparatus may not be changed, the rear portion of the top storage space which cannot be fully utilized is fully utilized, the lower storage space becomes large, and the storage volume is also remarkably increased in a certain sense, and the user operation convenience is improved. In addition, when the compressor is arranged at the lower part of the refrigerating and freezing device, the resonance problem of the compressor and the air extracting pump and the heat superposition problem can be solved, and the noise can be remarkably reduced. Therefore, the refrigerating and freezing device has unexpected technical effects that the air pump is arranged at the top of the box body.

Furthermore, the refrigerating and freezing device has good fresh-keeping effect, low requirements on rigidity and strength of a storage container and the like, low realization requirements and low cost. Moreover, the refrigeration and freezing device well solves the technical problems which are required to be solved by the person skilled in the air-conditioning fresh-keeping field but are not successfully solved all the time. The refrigerating and freezing device of the application has small volume and low noise, and is especially suitable for families and individuals.

Further, the refrigerating and freezing apparatus of the present application is preferably a household refrigerator, for example, a household compression type direct cooling refrigerator, a household compression type air cooling refrigerator, a semiconductor refrigerating refrigerator, or the like.

The above, as well as additional objectives, advantages, and features of the present application will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present application when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the application will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG. 1 is a schematic block diagram of a refrigeration and freezer according to one embodiment of the application;

FIG. 2 is a schematic block diagram of a hidden part structure of a refrigerating and freezing apparatus according to an embodiment of the present application;

FIG. 3 is a schematic block diagram of a hidden part structure of a refrigerating and freezing apparatus according to an embodiment of the present application;

FIG. 4 is a schematic block diagram of a hidden part structure of a refrigerating and freezing apparatus according to an embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of a gas separator in a refrigeration chiller according to one embodiment of the present application;

FIG. 6 is a schematic exploded view of an air pump assembly in a refrigeration and chiller according to one embodiment of the present application;

fig. 7 is a schematic view of a storage container in a refrigeration and freezer according to one embodiment of the application.

Detailed Description

Fig. 1 is a schematic configuration view of a refrigerating and freezing apparatus according to an embodiment of the present application. Referring to fig. 1 and 2 to 4, an embodiment of the present application provides a refrigerating and freezing apparatus, which may include a cabinet 20, a main door, a gas separator 30, an air pump 41, and a refrigerating system.

The case 20 defines a storage space 200 therein. For example, the case 20 may include a liner defining a storage space 200 therein. The main door body may be composed of two side-by-side door bodies 28, and both side-by-side door bodies 28 are rotatably mounted to the case 20 and configured to open or close the storage space 200 defined by the case 20. The main door body can also be a door body. Further, a storage container 21 is disposed in the storage space 200, and an air-conditioned fresh-keeping space 210 is disposed in the storage container 21. The modified atmosphere fresh-keeping space 210 can be a closed space or an approximately closed space. Preferably, the storage container 21 is a drawer assembly. The storage container 21 may include a drawer cylinder 22 and a drawer body 23. The drawer cylinder 22 may have a forward opening and be disposed in the storage space 200, and in particular, may be disposed at a lower portion of the storage space 200. As will be appreciated by those skilled in the art, the drawer cylinder 22 may also be disposed in a middle or upper portion of the storage space 200. The drawer body 23 is slidably disposed within the drawer cylinder 22 to operatively withdraw from a forward opening of the drawer cylinder 22 and insert the drawer cylinder 22 inwardly. The drawer body 23 may have a drawer end cap that may be mated with the opening of the drawer cylinder 22 to seal the controlled atmosphere fresh space 210. In some alternative embodiments, the storage container 21 may include a barrel and a small door configured to open or close the barrel.

The refrigeration system is configured to provide cooling to the storage space 200. Specifically, in some embodiments, the refrigeration system may be a refrigeration cycle system composed of a compressor, a condenser, a throttle device, an evaporator, and the like. The evaporator is configured to provide cooling directly or indirectly into the storage space 200. For example, when the refrigerating and freezing device is a household compression type direct-cooling refrigerator, the evaporator can be arranged outside or inside the rear wall surface of the inner container. When the refrigerating and freezing device is a household compressed air-cooled refrigerator, the interior of the box body 20 is also provided with an evaporator chamber, the evaporator chamber is communicated with the storage space 200 through an air path system, an evaporator is arranged in the evaporator chamber, and a fan is arranged at an outlet of the evaporator chamber so as to circularly refrigerate the storage space 200. In other embodiments, the refrigeration system may also be a semiconductor refrigeration device.

Fig. 5 is a schematic cross-sectional view of a gas separator in a refrigeration and freezer according to one embodiment of the application. As shown in fig. 5, the gas separator 30 has a modified atmosphere membrane 300, a first gas collection chamber 310, and a second gas collection chamber 320. The gas regulating membrane 300 is located between the first gas collection chamber 310 and the second gas collection chamber 320 to space apart the first gas collection chamber 310 and the second gas collection chamber 320. The first gas collecting chamber 310 is configured to be controllably communicated with an external space (such as the storage space 200, the external space of the box 20, etc.) of the gas separator 30, so that when the pressure of the first gas collecting chamber 310 is smaller than the pressure of the external space of the gas separator, air in the external space of the gas separator enters the first gas collecting chamber 310, the gas regulating membrane 300 is configured to enable oxygen in the air in the first gas collecting chamber 310 to enter the second gas collecting chamber 320 through the gas regulating membrane 300 more than nitrogen in the first gas collecting chamber 310 when the pressure of the first gas collecting chamber 310 is larger than the pressure of the second gas collecting chamber 320, and the first gas collecting chamber 310 is further configured to be controllably communicated with the gas regulating fresh-keeping space 210, so that when the pressure of the first gas collecting chamber 310 is larger than the pressure of the gas regulating fresh-keeping space 210, the rest of the air after the air entering the first gas collecting chamber 310 is removed from the air entering the second gas collecting chamber 320 through the gas regulating membrane 300 enters the gas regulating fresh-keeping space 210, thereby obtaining a lean nitrogen-rich oxygen atmosphere in the gas fresh-keeping space 210 to be beneficial to food fresh-keeping. The suction pump 41 may be in communication with the second gas collection chamber 320 via a line 50 to facilitate the flow of gas within the second gas collection chamber 320 out of the gas separator 30.

That is, in the gas separator 30, the modified atmosphere film 300 is configured such that oxygen in the air in the first gas collection chamber 310 permeates through the modified atmosphere film 300 more into the second gas collection chamber 320 than nitrogen therein. The first gas collection chamber 310 is controllably communicated with the external space of the gas separator 30 such that air of the external space of the gas separator 30 enters the first gas collection chamber 310, and the first gas collection chamber 310 is also controllably communicated with the modified atmosphere storage space 210 such that the remaining gas, excluding the gas having entered the second gas collection chamber 320 through the modified atmosphere membrane 300, from the air entering the first gas collection chamber 310 enters the modified atmosphere storage space 210. The suction pump 41 is configured to suck the gas permeated into the second gas collection chamber 320 out of the gas separator 30.

Specifically, the suction pump 41 causes the gas in the second gas collection chamber 320 to flow out through the pipe 50 by sucking out, so that the pressure of the second gas collection chamber 320 is reduced. When the pressure of the second gas collection chamber 320 is smaller than the pressure of the first gas collection chamber 310, the gas such as oxygen having a relatively fast permeation rate in the air in the first gas collection chamber 310 enters the second gas collection chamber 320 under the pressure and the air conditioning membrane 300. At this time, since a part of the oxygen in the first gas collection chamber 310 enters the second gas collection chamber 320, other relatively slow permeation rate gas containing only a small amount of oxygen or no oxygen, that is, nitrogen-rich gas is formed in the first gas collection chamber 310. Further, the pressure of the first gas collecting chamber 310 is reduced due to the reduction of oxygen in the gas therein, so that air in the storage space 200 enters the first gas collecting chamber 310 due to the pressure difference, and the gas such as oxygen with relatively high permeation rate in the air entering the first gas collecting chamber 310 is continuously discharged into the second gas collecting chamber 320 under the action of the air pump 41 and the air regulating membrane 300. That is, the air pump 41 continuously pumps the air in the storage space 200 into the gas separator 30 by pumping the air outward, and forms the remaining gas, i.e., the nitrogen-rich gas, excluding the gas that has entered the second gas collection chamber 320, in the first gas collection chamber 310 under the action of the air-conditioning film 300. At this time, the first gas collection chamber 310 may be controlled to communicate with the modified atmosphere space 210 such that the nitrogen-rich gas is filled into the modified atmosphere space 210.

The refrigerating and freezing device can form a nitrogen-enriched and oxygen-depleted gas atmosphere in the modified atmosphere fresh-keeping space 210 to facilitate food fresh-keeping, and the gas atmosphere reduces the strength of aerobic respiration of fruits and vegetables by reducing the content of oxygen in the fruit and vegetable storage space, ensures the basic respiration function, and prevents the fruits and vegetables from carrying out anaerobic respiration, thereby achieving the aim of long-term fresh-keeping of the fruits and vegetables.

In some embodiments of the present application, the rear portion of the top end of the casing 20 defines a receiving space 24 to receive the suction pump 41. In this embodiment, the inventor found that the rear of the existing top storage space of the refrigerator-freezer is often left unused without placing the articles, possibly due to the refrigerator-freezer being too tall or too deep, or other reasons, the user being inconvenient to place the articles in, and the inventor of the present application creatively utilized this space, where a housing space 24 for the suction pump 41 is provided. Further, the accommodating space 24 extends in the width direction (transverse direction) of the case 20, the upper edge of the front wall of the accommodating space 24 is located in front of the lower edge, and the front wall of the accommodating space 24 is folded from the upper edge to the lower edge thereof, and the front wall may also have an inclined plate shape. The storage space 200 includes a first space in front of the front wall of the accommodating space 24, and a second space below the bottom wall of the accommodating space 24.

In some embodiments of the present application, the storage space 200 is a refrigerated space, which is stored at a temperature generally between 2 ℃ and 10 ℃, preferably between 3 ℃ and 8 ℃. Further, the case 20 may further define a freezing space 25 and a temperature changing space 26, the freezing space 25 is disposed below the storage space 200, and the temperature changing space 26 is disposed between the freezing space 25 and the refrigerating space. The temperature in the refrigerated space 25 is typically in the range of-14 to-22 ℃. The temperature change space 26 can be adjusted as desired to store the appropriate food. In some alternative embodiments of the present application, the storage space 200 may also be a freezing space or a temperature-changing space, that is, the temperature range of the storage space 200 may be controlled between-14 ℃ and-22 ℃ or adjusted according to the requirement. Further, the relative positions of the refrigerating space, the freezing space 25 and the temperature changing space 26 can be adjusted according to actual requirements.

In some embodiments of the present application, when the refrigeration system includes a compressor, the compressor may be disposed at the bottom end rear of the cabinet 20, so that the compressor and the suction pump 41 may be sufficiently spaced apart, preventing heat and noise from being superimposed. In some preferred embodiments of the present application, the compressor may be mounted within the receiving space 24, in which case the bottom storage space for convenient use by the user may be significantly increased.

In some embodiments of the present application, the suction pump 41 is disposed at one lateral end of the accommodating space 24. The compressor may be disposed at the other lateral end of the accommodating space 24 such that the suction pump 41 is spaced apart from the compressor, thereby reducing noise and waste heat. The compressor may also be located adjacent to the suction pump 41.

Fig. 6 is a schematic exploded view of an air pump assembly 40 in a refrigeration and freezer according to one embodiment of the application; further to reduce noise, as shown in fig. 6, in some embodiments of the present application, the refrigeration and freezer may further include a mounting top plate 42 and a seal box 43. The mounting plate 42 may be mounted to the top surface of the receiving space 24 by a plurality of damper foot pads 44. The seal box 43 is mounted to the mounting top plate 42. The suction pump 41 is mounted in the seal box 43. That is, the suction pump 41 may be disposed inside a sealing case 43, and the sealing case 43 may be installed in the accommodating space 24 through the installation ceiling 42. The seal box 43, mounting plate 42, and pump 41 may also be referred to as a pump assembly 40. The seal box 43 may largely block noise and/or waste heat from propagating outward when the suction pump 41 is in operation. Further, to enhance the vibration/noise reduction effect, a plurality of vibration/noise reduction pads 44 (which may be made of rubber) may be mounted on the mounting plate 42. The number of the damper foot pads 44 is preferably four, and the four damper foot pads 44 are mounted in foot pad mounting holes formed at four corners of the mounting top plate 42.

In some embodiments of the present application, a mounting frame is disposed inside the sealing box 43, and the mounting frame is connected to the inner wall of the sealing box 43 through a plurality of vibration-reducing pads, and the suction pump 41 is fixed inside the mounting frame, so as to reduce vibration and noise during operation of the suction pump 41. Specifically, two vibration reduction cushion blocks are arranged at the top of the mounting frame, and the vibration reduction cushion blocks are sleeved on the positioning columns on the top surface of the sealing box 43. Two opposite sides of the mounting frame are respectively provided with a round vibration reduction cushion block, and are clamped in clamping grooves of corresponding side walls of the sealing box 43. And the other two opposite sides of the mounting frame are respectively fixed with a vibration reduction cushion block. The suction pump 41 may be located between the respective vibration reduction pads within the seal box 43 and secured to the mounting frame by screws.

In order to facilitate heat dissipation, heat dissipation holes are formed at both lateral ends of the top wall and lateral ends of the rear wall of the accommodating space 24, so as to increase heat dissipation effect and ensure working stability of the compressor and the air pump 41. Further, the container is accommodated. The refrigeration and freezer may further include a heat dissipating fan to facilitate the flow of heat dissipating air.

The tubing 50 may include a connecting tube section that extends from top to bottom. The connecting pipe section is arranged at the rear of the storage space 200, the upper end of the connecting pipe section is communicated with the inlet of the air pump 41, and the lower end of the connecting pipe section is communicated with the second gas collecting cavity of the gas separator 30. The connecting pipe section can be arranged close to the side shell and the back plate in the box body 20, the connecting pipe section can be sleeved with a heat insulation sleeve or a heat insulation pipe, the cold energy in oxygen in the connecting pipe section can be prevented from being transferred to the side shell and the back plate, and condensation can be prevented from being generated.

In some embodiments of the application, as shown in fig. 5, the gas separator 30 may include a gas collection box 31. The gas collecting box 31 is internally provided with a horizontally placed supporting frame 32, the supporting frame 32 and the upper half box body of the gas collecting box 31 jointly define a first gas collecting cavity 310, and the supporting frame 32 and the lower half box body of the gas collecting box 31 jointly define a second gas collecting cavity 320. Further, the air conditioning film 300 may be disposed on the support frame 32, and two surfaces of the air conditioning film 300 face the upper half box body and the lower half box body of the air collecting box 31, respectively.

In some embodiments of the present application, three controllably openable vents may also be provided on the air collection box 31. The three ventilation holes may be a first ventilation hole for allowing air in the storage space 200 to enter the first gas collection chamber 310, a second ventilation hole for allowing nitrogen-rich gas to be filled into the modified atmosphere fresh-keeping space 210 from the first gas collection chamber 310, and a third ventilation hole for allowing oxygen-rich gas to flow out of the second gas collection chamber 320, respectively.

That is, the first gas collection chamber 310 may communicate with the storage space 200 through the first vent hole. Specifically, when the pressure of the first gas collection chamber 310 is less than the pressure of the storage space 200, the first vent hole is controlled to open. At this time, the second vent hole is controlled to be closed so that the pressure of the first gas collection chamber 310 is increased and a large amount of nitrogen-rich gas is formed. It will be appreciated that the pressure in the first gas collection chamber 310 will continue to rise because a relatively slow permeation rate of gas, such as nitrogen, cannot pass through the modified atmosphere membrane 300 into the second gas collection chamber 320 in significant amounts. When the pressure of the first gas collection chamber 310 is greater than or equal to the pressure of the storage space 200, the first vent hole may be controllably closed, and at this time, the second vent hole may be controllably opened, so that a large amount of nitrogen-rich gas in the first gas collection chamber 310 flows to the modified atmosphere fresh-keeping space 210. The third ventilation hole can be kept in an open state when the first ventilation hole and/or the second ventilation hole are/is opened, so that the oxygen-enriched gas in the second gas collection cavity 320 is timely pumped out by the air pump 41, and the air in the storage space 200 is caused to continuously flow into the first gas collection cavity 310. In some embodiments of the application, the second vent may also be configured to open with a delay. Specifically, when the first vent hole is opened, the second vent hole is opened after waiting for a predetermined time, so that a sufficient nitrogen-rich gas is formed in the first gas collection chamber 310.

In some embodiments of the present application, the refrigeration and freezer may further include an axial flow fan 60. The axial flow fan 60 may be disposed in the flow path from the first gas collection chamber 310 to the modified atmosphere storage space 210, configured to be controllably activated, and to promote the acceleration of the flow of the remaining gas in the first gas collection chamber 310, excluding the gas that has passed through the modified atmosphere membrane 300 into the second gas collection chamber 320, toward the modified atmosphere storage space 210. Specifically, the axial flow fan 60 is disposed such that the air inlet thereof faces the first gas collection chamber 310 and the air outlet thereof faces the modified atmosphere fresh-keeping space 210, so as to promote the nitrogen-rich gas flowing out of the first gas collection chamber 310 to accelerate to flow to the modified atmosphere fresh-keeping space 210. Further, the axial flow fan 60 may be configured to be turned on with the opening of the second vent hole.

In some embodiments of the present application, as shown in fig. 3, the gas separator 30 may be disposed inside the storage space 200 and at the rear side of the drawer cylinder 22. That is, the gas separator 30 may be independently integrally provided outside the modified atmosphere fresh-keeping space 210, thereby facilitating installation and removal thereof.

In some embodiments of the present application, as shown in fig. 7, a plurality of air pressure balancing holes 221 may be formed in the drawer cylinder 22, and the storage space 200 and the modified atmosphere fresh-keeping space 210 are communicated through the plurality of air pressure balancing holes 221. The air pressure balance holes 221 may be micro-holes of millimeter scale, for example, each air pressure balance hole 221 has a diameter of 0.1mm to 3mm. The provision of the plurality of air pressure balancing holes 221 can prevent the pressure in the modified atmosphere fresh-keeping space 210 from being too high, and in particular, when the pressure in the modified atmosphere fresh-keeping space 210 is too high, a small amount of air in the modified atmosphere fresh-keeping space 210 can flow into the storage space 200 through the air pressure balancing holes 221, so as to avoid the pressure in the modified atmosphere fresh-keeping space 210 from being too high. When a small amount of gas flows out of the modified atmosphere space 210, the atmosphere of the nitrogen-rich and oxygen-poor gas in the modified atmosphere space 210 is not changed or changed in a negligible way.

In some embodiments of the present application, a locking device, a handle, and a handle positioning device are provided between the drawer body 23 and the drawer cylinder 22. The locking device comprises a pivot lock catch arranged at two sides of the drawer end cover, two buckling parts arranged on the drawer cylinder 22, and a clamping promotion device. Each of the fastening portions may be a protrusion. The locking and urging device may be configured to urge the two pivoting latches to rotate in directions (i.e., respective first directions) in which the two pivoting latches are locked to the respective corresponding locking portions. The handle extends horizontally and is slidably mounted to the drawer end cap in a vertical direction. Also, the handle may be in an initial position when the drawer body 23 is in a closed state. And the handle is configured such that, in its initial position, both ends thereof are respectively brought into contact with and abut against the two pivoting catches to prevent each pivoting catch from rotating in the other direction opposite to the respective first direction, so that the pivoting catches are kept in engagement with the engaging portions, thereby locking the drawer body 23 to the drawer cylinder 22. Further, when the handle is moved up or down to the unlock position, i.e., from the initial position to the unlock position, each of the pivoting latches may be allowed to rotate in the other direction opposite to the respective first direction to allow the pivoting latches to rotate out of the corresponding snap-fit portions when the drawer body 23 is pulled outward, thereby allowing the drawer body 23 to be opened. The handle positioning means is configured to hold the handle in a respective predetermined position, mainly an initial position and an unlock position, after the handle is moved to that position. When opening the drawer body 23, the user first moves the handle up or down to the unlock position, the handle positioning means holds the handle in that position, and the user can pull the drawer body 23 outward. When closing the drawer body 23, the user first closes the drawer body 23 and then returns the handle downward or upward to the original position, and the handle positioning means holds the handle in this position, thereby holding the drawer body 23 and the drawer cylinder 22 in a locked state.

In order to further stabilize the movement of the handle, two ends of the handle are also respectively provided with a guide rod and a sliding block, and the guide rods extend along the vertical direction. The drawer body 23 further comprises two sets of slides, each set of slides having at least three runners extending in a vertical direction, such that one runner is provided on each side of the guide bar, the slide block moves on the remaining runners, or one runner is provided on each side of the slide block, and the guide bar moves on the remaining runners. For example, each set of slides may include four slides, one on each of the front and rear sides of the guide bar, and one on each of the lateral sides (i.e., left and right sides) of the slider.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the application have been shown and described herein in detail, many other variations or modifications of the application consistent with the principles of the application may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the application. Accordingly, the scope of the present application should be understood and deemed to cover all such other variations or modifications.

Claims

1. A refrigeration and freezer comprising:

the box body is internally provided with a storage space, a storage container is arranged in the storage space, and an air-conditioning fresh-keeping space is arranged in the storage container;

a gas separator having an air-conditioning membrane, a first gas collection chamber, and a second gas collection chamber, the air-conditioning membrane being located between the first gas collection chamber and the second gas collection chamber; the air regulating membrane is configured to enable oxygen in air in the first gas collecting cavity to penetrate through the air regulating membrane to enter the second gas collecting cavity more than nitrogen in the air in the first gas collecting cavity; the first gas collecting cavity is controllably communicated with the external space of the gas separator so that air in the external space of the gas separator enters the first gas collecting cavity, and the first gas collecting cavity is also controllably communicated with the modified atmosphere fresh-keeping space so that the rest of the air entering the first gas collecting cavity except the air which has penetrated the modified atmosphere film and enters the second gas collecting cavity enters the modified atmosphere fresh-keeping space; and

the air pump is arranged at the top of the box body and is communicated with the second gas collecting cavity through a pipeline so as to pump and exhaust the gas penetrating into the second gas collecting cavity to the outside of the gas separator;

a first vent hole which can be controlled to be opened, wherein the first vent hole enables air in the storage space to enter the first gas collection cavity;

the second ventilation hole can be controlled to be opened, and the second ventilation hole enables the nitrogen-rich gas to be filled into the modified atmosphere fresh-keeping space from the first gas collection cavity;

and a third vent hole which can be controlled to be opened, wherein the third vent hole enables oxygen-enriched gas to flow out of the second gas collecting cavity.

2. The refrigeration and freezer of claim 1, further comprising:

the axial flow fan is arranged on a flow path from the first gas collecting cavity to the modified atmosphere fresh-keeping space and is configured to be controlled to start so as to promote the rest gas to flow into the modified atmosphere fresh-keeping space.

3. A refrigerating and freezing apparatus according to claim 1, wherein,

the storage container is a drawer assembly comprising:

a drawer body slidably disposed within the drawer cylinder to operably withdraw from a forward opening of the drawer cylinder and insert the drawer cylinder inwardly.

4. A refrigerating and freezing apparatus according to claim 1, wherein,

the rear part of the top end of the box body is limited with a containing space for containing the air pump.

5. The refrigeration and freezer of claim 4, further comprising:

a refrigeration system configured to provide cooling to the storage space, an

The refrigerating system is provided with a compressor and is arranged in the accommodating space.

6. The refrigeration and freezer of claim 4, further comprising:

The air pump is arranged in the sealing box.

7. A refrigerating and freezing apparatus as recited in claim 6, wherein,

the transverse two ends of the top wall and the transverse two ends of the rear wall of the accommodating space are provided with heat dissipation holes;

the air pump is arranged at one transverse end of the accommodating space.

8. A refrigerating and freezing apparatus as recited in claim 4, wherein,

the upper edge of the front wall of the accommodating space is positioned in front of the lower edge; and is also provided with

The storage space includes a first space in front of a front wall of the accommodating space, and a second space below a bottom wall of the accommodating space.

9. A refrigerating and freezing apparatus according to claim 3, wherein,

the gas separator is arranged in the storage space and is positioned at the rear side of the drawer cylinder.

10. The refrigeration and chiller of claim 1 wherein the gas separator further comprises:

the gas collecting box is internally provided with a horizontally placed supporting frame, the supporting frame and the upper half box body of the gas collecting box jointly define the first gas collecting cavity, and the supporting frame and the lower half box body of the gas collecting box jointly define the second gas collecting cavity;

the air-conditioning film is arranged on the supporting frame.