CN106679278B

CN106679278B - Refrigerating and freezing device

Info

Publication number: CN106679278B
Application number: CN201611132812.7A
Authority: CN
Inventors: 王磊; 王晶; 何国顺; 毕云龙
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: CN106679278A

Abstract

The invention provides a refrigerating and freezing device. The refrigerating and freezing device comprises: the box body is internally limited with a storage space and a compressor bin, a storage container is arranged in the storage space, and an air-conditioning fresh-keeping space is arranged in the storage container; the air-conditioning membrane assembly is configured to enable oxygen in the air flow in the space around the air-conditioning membrane assembly to penetrate through the air-conditioning membrane to enter the oxygen-enriched gas collection cavity more than nitrogen in the air flow in the space around the air-conditioning membrane assembly; an oxygen discharge flow path system configured to directly or indirectly exchange heat with the compressor after the gas permeated into the oxygen-enriched gas collection chamber flows out; and the air extracting device is arranged on the oxygen discharge flow path system so as to extract the gas penetrating into the oxygen-enriched gas collecting cavity to the outside of the storage container. The refrigerating and freezing device has good fresh-keeping effect, and can fully utilize the cold energy in the gas flowing out of the oxygen-enriched gas collecting cavity so as to cool the compressor and ensure the running stability of the compressor and the whole refrigerating and freezing device.

Description

Refrigerating and freezing device

Technical Field

The invention 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 invention aims to overcome at least one defect of the existing refrigerator, and provides a refrigeration and freezing device which creatively provides that oxygen in air in an air-conditioned fresh-keeping space is discharged out of the space, so that a nitrogen-rich and oxygen-poor gas atmosphere which is beneficial to food fresh-keeping is obtained in the space, the gas atmosphere reduces the oxygen content in the fruit and vegetable storage space, reduces the strength of aerobic respiration of fruits and vegetables, ensures the basic respiration effect, prevents the fruits and vegetables from carrying out anaerobic respiration, and further achieves the aim of long-term fresh-keeping of the fruits and vegetables.

A further object of the present invention is to make full use of the cold in the gas flowing out of the oxygen-enriched gas collection chamber to cool the compressor and ensure the operational stability of the compressor and the whole refrigeration and freezing device.

Another further object of the present invention is to make full use of the compressor compartment space and the storage space of the refrigeration and freezer, which makes the refrigeration and freezer compact in structure and energy efficient.

In order to achieve at least one of the above objects, the present invention provides a refrigerating and freezing apparatus 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 refrigerating system is arranged on the box body and is configured to provide cold energy for the storage space; and the refrigeration system includes a compressor;

the air-conditioning membrane assembly is provided with at least one air-conditioning membrane and an oxygen-enriched gas collecting cavity, the surrounding space of the air-conditioning membrane assembly is communicated with the air-conditioning fresh-keeping space, and the air-conditioning membrane assembly is configured to enable oxygen in the air flow of the surrounding space of the air-conditioning membrane assembly to penetrate through the air-conditioning membrane to enter the oxygen-enriched gas collecting cavity more than nitrogen in the air flow of the surrounding space of the air-conditioning membrane assembly; and

an oxygen discharge flow path system having an inlet in communication with the oxygen-enriched gas collection chamber and configured to cause the gas permeated into the oxygen-enriched gas collection chamber to directly or indirectly exchange heat with the compressor after the gas flows out of the oxygen-enriched gas collection chamber; and

the air extracting device is arranged on the oxygen discharging flow path system to extract the gas penetrating into the oxygen-enriched gas collecting cavity to the outside of the storage container.

Optionally, a compressor compartment is further defined in the box, the compressor compartment extending in a transverse direction; and the compressor and the air extractor are both arranged in the compressor bin.

Optionally, the air extracting device and the compressor are arranged at one transverse end of the compressor bin; the refrigerating system also comprises a condenser which is arranged at the other transverse end of the compressor bin; the air extractor, the compressor and the condenser are arranged in sequence along the transverse direction.

Optionally, the oxygen discharge flow path system includes:

an oxygen exhaust pipeline, an inlet of which is communicated with the oxygen-enriched gas collecting cavity, and an air extracting device is arranged on the oxygen exhaust pipeline; and

the air flow guiding box body is used for limiting the compressor accommodating cavity singly or jointly with the box body to accommodate the compressor, and an outlet of the oxygen discharging pipeline is communicated with the compressor accommodating cavity so that the air flowing out of the oxygen-enriched air collecting cavity exchanges heat with the compressor in the compressor accommodating cavity.

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

a drawer body slidably mounted within the drawer cylinder for operative outward withdrawal and inward insertion of the drawer cylinder from the forward opening of the drawer cylinder.

Optionally, a containing cavity communicated with the air-conditioning fresh-keeping space is arranged in the top wall of the drawer cylinder body so as to contain the air-conditioning membrane component.

Optionally, at least one first vent hole and at least one second vent hole which is spaced from the at least one first vent hole are formed in a wall surface between the accommodating cavity of the top wall of the drawer cylinder and the air-conditioning fresh-keeping space, so that the accommodating cavity and the air-conditioning fresh-keeping space are respectively communicated at different positions; the refrigerating and freezing device further comprises a fan which is arranged in the accommodating cavity so as to enable the gas in the air-conditioning fresh-keeping space to return to the air-conditioning fresh-keeping space through at least one first vent hole, the accommodating cavity and at least one second vent hole in sequence.

Optionally, the fan is a centrifugal fan, and is arranged above the at least one first vent hole and enables the rotation axis of the centrifugal fan to be vertically downward;

the air regulating membrane component is in a flat plate shape and is arranged above the at least one second ventilation hole, so that each air regulating membrane of the air regulating membrane component is parallel to the top wall.

Optionally, the air-conditioning membrane assembly further includes a support frame having a first surface and a second surface parallel to each other, and the support frame is formed with a plurality of air flow channels extending over the first surface and the second surface, respectively, and penetrating the support frame to communicate the first surface and the second surface, the plurality of air flow channels together forming an oxygen-enriched gas collection chamber; the at least one air-conditioning film is two plane-shaped air-conditioning films which are respectively paved on the first surface and the second surface of the supporting frame.

The refrigerating and freezing device provided by the invention has the advantages that the air-conditioning membrane component and the air exhaust device are arranged, so that the air atmosphere rich in nitrogen and poor in oxygen is formed in the air-conditioning fresh-keeping space to be beneficial to food fresh-keeping, the air atmosphere reduces the strength of the aerobic respiration of fruits and vegetables by reducing the content of oxygen in the fruit and vegetable storage space, and meanwhile, the basic respiration effect is ensured, and the fruits and vegetables are prevented from carrying out anaerobic respiration, so that the aim of long-term fresh-keeping of the fruits and vegetables is achieved.

Further, in the refrigerating and freezing device, the gas flowing out of the oxygen-enriched gas collecting cavity can be blown to the compressor so as to cool the compressor, so that the cold energy in the gas flowing out of the oxygen-enriched gas collecting cavity can be fully utilized.

Furthermore, as the air extractor in the refrigerating and freezing device is arranged in the compressor bin, the space of the compressor bin can be fully utilized, other places are not additionally occupied, and particularly, the storage space is not occupied, so that the additional volume of the refrigerating and freezing device is not increased, and the refrigerating and freezing device has a compact structure.

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 invention has small volume and low noise, and is especially suitable for families and individuals.

Further, the refrigerating and freezing device of the present invention is preferably a household refrigerator, for example, a household compression type direct cooling refrigerator, a household compression type air cooling refrigerator.

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

Drawings

Some specific embodiments of the invention 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 partial block diagram of a refrigeration and freezer according to one embodiment of the invention;

FIG. 2 is a schematic partial block diagram of a refrigeration and freezer according to one embodiment of the invention;

FIG. 3 is a schematic partial block diagram of a refrigeration and freezer according to one embodiment of the invention;

FIG. 4 is a schematic block diagram of another view of the structure shown in FIG. 1;

FIG. 5 is a schematic exploded view of an air extractor in a refrigeration chiller according to one embodiment of the present invention;

FIG. 6 is a schematic partial block diagram of a refrigeration and freezer according to one embodiment of the invention;

FIG. 7 is a schematic exploded view of the structure shown in FIG. 6;

fig. 8 is an exploded view of an air conditioning membrane assembly in a refrigeration and chiller according to one embodiment of the present invention.

Detailed Description

FIG. 1 is a schematic partial block diagram of a refrigeration and freezer according to one embodiment of the invention; FIG. 2 is a schematic partial block diagram of a refrigeration and freezer according to one embodiment of the invention; fig. 4 is a schematic block diagram of another view of the structure shown in fig. 1. As shown in fig. 1, 2 and 4, the embodiment of the present invention provides a refrigerating and freezing apparatus, which may include a cabinet 20, a main door, a refrigerating system, an air conditioning membrane assembly 30, an air extracting device 40 and an oxygen discharging flow path system 50.

The housing 20 defines a storage space 211 and a compressor compartment 24 therein. For example, the case 20 may include a liner 21, with the liner 21 defining a storage space 211 therein. The main door body may be composed of two opposite door bodies, both rotatably mounted to the case 20, configured to open or close the storage space 211 defined by the case 20. Alternatively, the main door body may be a door body. Further, a storage container is disposed in the storage space 211, and an air-conditioned fresh-keeping space is disposed in the storage container. The air-conditioned fresh-keeping space can be a closed space or an approximately closed space. Preferably, the storage container is a drawer assembly. The storage container 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 211, and in particular, may be disposed at a lower portion of the storage space 211. 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 211. 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 matched with the opening of the drawer cylinder 22 to perform the sealing of the controlled atmosphere fresh-keeping space. In some alternative embodiments, the storage container may include a barrel and a small door configured to open or close the barrel.

The refrigeration system is configured to supply cold to the storage space 211, and may be a refrigeration cycle system including a compressor 71, a condenser 72, a throttle device, an evaporator, and the like. The compressor is mounted within a compressor housing 24. The evaporator is configured to provide cooling directly or indirectly into the storage space 211. For example, when the refrigerating and freezing apparatus is a home compression type direct-cooling refrigerator, the evaporator may be provided outside or inside the rear wall surface of the liner 21. 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 211 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 211.

The air conditioning membrane assembly 30 is provided with at least one air conditioning membrane 31 and an oxygen-enriched gas collecting cavity, and the surrounding space is communicated with the air conditioning fresh-keeping space. The modified atmosphere membrane assembly 30 may be configured such that oxygen in the spatial gas stream surrounding the modified atmosphere membrane assembly 30 permeates through the modified atmosphere membrane 31 more into the oxygen-enriched gas collection chamber than nitrogen in the spatial gas stream surrounding the modified atmosphere membrane assembly 30. Specifically, the inner side surface of each of the modified atmosphere membranes 31 faces the oxygen-enriched gas collection chamber so that oxygen in the air in the outer space of the modified atmosphere membrane module 30 passes through at least one modified atmosphere membrane 31 more than nitrogen therein into the oxygen-enriched gas collection chamber when the pressure in the oxygen-enriched gas collection chamber is smaller than the pressure in the surrounding space of the modified atmosphere membrane module 30. The gas that permeates into the oxygen-enriched gas collection chamber may have some amount of coldness.

The inlet of the oxygen discharge flow path system 50 may be in communication with the oxygen enriched gas collection chamber of the modified atmosphere membrane assembly 30 for discharging oxygen within the modified atmosphere fresh space. The air extracting device 40 is disposed on the oxygen exhausting flow path system 50 to extract the gas permeated into the oxygen-enriched gas collecting chamber to the outside of the storage container. In particular, the oxygen discharge flow path system 50 may be configured to cause the gas permeated into the oxygen-enriched gas collection chamber to directly or indirectly exchange heat with the compressor 71 to cool the compressor 71 after the gas flows out of the oxygen-enriched gas collection chamber.

In this embodiment, the air extracting device 40 extracts air outwards, so that the pressure of the oxygen-enriched gas collecting cavity is smaller than the pressure of the surrounding space of the air-conditioning membrane assembly 30, and further, oxygen in the surrounding space of the air-conditioning membrane assembly 30 can enter the oxygen-enriched gas collecting cavity. Because the air-conditioning fresh-keeping space is communicated with the space around the air-conditioning membrane assembly 30, air in the air-conditioning fresh-keeping space can enter the space around the air-conditioning membrane assembly 30, so that oxygen in the air-conditioning fresh-keeping space can enter the oxygen-enriched gas collection cavity, and a nitrogen-enriched and oxygen-depleted gas atmosphere beneficial to food fresh keeping is obtained in the air-conditioning fresh-keeping space. In particular, the gas exiting the oxygen-enriched gas collection chamber may cool down the compressor 71. The air pumped by the air extractor 40 can be used for cooling the compressor 71, so that the efficiency of the compressor 71 is prevented from being reduced due to the fact that the heat of the compressor 71 is too high, further the energy consumption and the fresh-keeping performance of the refrigerating and freezing device are prevented from being directly influenced, the working temperature of the compressor 71 can be obviously reduced, and the stability of the compressor 71 is improved.

The refrigerating and freezing device can form a nitrogen-enriched and oxygen-depleted gas atmosphere in the modified atmosphere fresh-keeping space to be beneficial to 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 addition, the atmosphere also has a large amount of gases such as nitrogen, so that the cooling efficiency of the articles in the air-conditioned fresh-keeping space is not reduced, and fruits and vegetables and the like can be effectively stored. Particularly, the cold energy of the gas flowing out of the oxygen-enriched gas collecting cavity can be utilized, so that the energy utilization rate and the energy efficiency of the refrigerating and freezing device are improved.

In some embodiments of the present invention, as shown in FIG. 2, the oxygen vent flow system 50 may include an oxygen vent line 51 and a flow directing cassette 52. The inlet of the oxygen discharge line 51 communicates with the oxygen enriched gas collection chamber and is provided with the above-described air extraction device 40. The gas flow directing box 52 alone or in combination with the box 20 defines a compressor receiving chamber to receive the compressor 71 and the outlet of the oxygen discharge line 51 communicates with the compressor receiving chamber to allow the gas exiting the oxygen-enriched gas collection chamber to exchange heat with the compressor 71 within the compressor receiving chamber. In other embodiments of the present invention, as shown in fig. 3, the oxygen exhaust flow system 50 may be just an oxygen exhaust pipe, where the inlet is connected to the oxygen-enriched gas collecting chamber, the above-mentioned air extracting device 40 is disposed on the oxygen exhaust flow system, and the outlet is toward the compressor 71, so that the gas flowing out of the oxygen-enriched gas collecting chamber is blown toward the compressor 71, and the temperature of the compressor 71 is reduced. In some alternative embodiments of the present invention, the oxygen discharge flow system 50 may include an oxygen discharge line 51 and a flow directing plate that may better direct the flow of gas exiting the oxygen discharge line 51 toward the housing of the compressor 71.

In some embodiments of the present invention, the drawer cylinder 22 may be provided with a plurality of micropores, and the storage space 211 and the modified atmosphere fresh-keeping space are communicated through the plurality of micropores. The micro-holes may also be referred to as air pressure balance holes, each of which may be of the order of millimeters, for example, each having a diameter of 0.1mm to 3mm, preferably 1mm, 1.5mm, etc. The pressure in the modified atmosphere fresh-keeping space can be prevented from being too low by arranging the plurality of micropores, the nitrogen in the modified atmosphere fresh-keeping space can not flow to the large storage space 211 by arranging the plurality of micropores, and even if the nitrogen flows, the nitrogen is very small or even negligible, so that the preservation of foods in the modified atmosphere fresh-keeping space can not be influenced. In some alternative embodiments of the present invention, the drawer cylinder 22 may not have micropores, and even if a large amount of nitrogen or other gas exists in the air-conditioned fresh-keeping space, the user does not need to use much effort when pulling the drawer body 23, and the air-conditioned fresh-keeping space is greatly labor-saving compared with the existing vacuum storage chamber.

In some embodiments of the present invention, the storage space 211 is a refrigerated space, and the storage temperature is typically 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 211, 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. The compressor compartment 24 is preferably arranged behind and below the freezer space 25. In some alternative embodiments of the present invention, the storage space 211 may also be a freezing space or a temperature-changing space, that is, the temperature range of the storage space 211 may be controlled between-14 ℃ and-22 ℃ or adjusted according to the requirement. Further, the relative positions of the refrigerating space, the freezing space and the temperature changing space can be adjusted according to actual requirements.

In some embodiments of the present invention, the compressor compartment 24 extends in a lateral direction of the housing 20. The suction device 40 and the compressor 71 are both disposed within the compressor compartment 24. The airflow directing box 52 may be disposed within the compressor housing 24 to define a smaller compressor receiving chamber within the compressor housing 24. In some embodiments, the suction device 40 and the compressor 74 are both disposed at one lateral end of the compressor cartridge 24. A condenser 72 of the refrigeration system may be disposed at the other lateral end of the compressor compartment 24. The suction device 40, the compressor 71 and the condenser 72 are arranged in this order in the transverse direction. In some alternative embodiments, the suction device 40 is disposed at one lateral end of the compressor housing 24, and the compressor 71 may be disposed at the other lateral end of the compressor housing 24, such that the suction pump 41 is relatively far from the compressor 71, reducing noise and waste heat. A condenser 72 may be disposed between the compressor 71 and the suction device 40.

Fig. 5 is a schematic exploded view of an air extractor 40 in a refrigeration chiller according to one embodiment of the present invention. As shown in fig. 5, in some embodiments of the invention, the suction device 40 may include a suction pump 41, a mounting base plate 42, and a seal box 43. The mounting plate 42 may be mounted to the bottom surface of the compressor compartment 24 by a plurality of damper foot pads 44. The seal case 43 is mounted to the mounting base plate 42. The suction pump 41 is mounted in the seal box 43 and is located on the oxygen discharge flow passage system 50. That is, the oxygen discharge flow path system 50 may include a first pipe section located upstream of the suction pump 41 and connected to an inlet of the suction pump 41, and a second pipe section located downstream of the suction pump 41 and connected to an outlet of the suction pump 41, and an outlet of the second pipe section may be directed toward the compressor 71. 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 base 42. The number of the vibration damping foot pads 44 is preferably four, and the four vibration damping foot pads 44 are mounted in foot pad mounting holes formed at four corners of the mounting base plate 42.

In some embodiments of the present invention, 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 bottom of the mounting frame, and the vibration reduction cushion blocks are sleeved on positioning columns on the bottom 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 some embodiments of the present invention, as shown in fig. 6 and 7, an air conditioning membrane assembly 30 may be disposed on the barrel wall of the drawer barrel 22. The air conditioning membrane assembly 30 may be flat and may preferably be disposed horizontally on the top wall of the drawer cylinder 22. Specifically, a receiving chamber 221 is provided in the top wall of the drawer cylinder 22 to receive the air conditioning membrane assembly 30. For example, at least one first vent hole 222 and at least one second vent hole 223 are formed in a wall surface between the accommodating chamber of the top wall of the drawer cylinder 22 and the controlled atmosphere fresh-keeping space. The at least one first vent hole 222 is spaced apart from the at least one second vent hole 223 to communicate the accommodating chamber with the modified atmosphere fresh-keeping space at different positions, respectively. The first vent hole 222 and the second vent hole 223 are small holes, and the number of the first vent hole and the second vent hole may be plural. In some alternative embodiments, the drawer cylinder 22 has a recessed slot inside the top wall. The air-conditioning membrane assembly 30 is disposed in a recessed channel in the top wall of the drawer cylinder 22.

The oxygen discharge line 51 may comprise a connecting tube section extending from top to bottom. The connecting pipe section is arranged at the rear of the storage space 211, the lower end of the connecting pipe section is communicated with the inlet of the air pump 41, and the upper part of the connecting pipe section is communicated with the oxygen-enriched gas collecting cavity of the air-conditioning membrane assembly 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 present invention, in order to facilitate the flow of the air in the modified atmosphere fresh food space and the accommodating chamber 221, the refrigerating and freezing apparatus may further include a blower 60, and the blower 60 may be disposed in the accommodating chamber and configured to facilitate the flow of the air in the modified atmosphere fresh food space into the accommodating chamber 221 through the first ventilation hole 222 and the flow of the air in the accommodating chamber 221 into the modified atmosphere fresh food space through the second ventilation hole 223. That is, the blower 60 may promote the return of the gas of the conditioned space to the conditioned space via the at least one first vent 222, the receiving chamber, and the at least one second vent 223 in sequence.

The fan 60 is preferably a centrifugal fan and is disposed in the receiving cavity 221 at a first vent 222. That is, the centrifugal fan is located above the at least one first vent hole 222 with the rotation axis vertically downward, and the air intake is opposite to the first vent hole 222. The air outlet of the centrifugal fan may be directed toward the air conditioning membrane assembly 30. The air conditioning membrane assembly 30 is disposed above the at least one second vent hole 223 such that each air conditioning membrane of the air conditioning membrane assembly 30 is parallel to the top wall of the drawer cylinder 22. At least one first vent 222 is provided in the front of the top wall and at least one second vent 223 is provided in the rear of the top wall. That is, the centrifugal fan is disposed at the front of the accommodating chamber 221, and the air conditioning membrane assembly 30 is disposed at the rear of the accommodating chamber 221. Further, the top wall of the drawer cylinder 22 includes a main plate portion 224 and a cover plate portion 225, a recess portion is formed in a partial region of the main plate portion 224, and the cover plate portion 225 is detachably covered on the recess portion to form the accommodating chamber 221. To facilitate the manufacture of the drawer cylinder 22, the main plate 224 may be integrally formed with the side, bottom, and rear walls of the drawer cylinder 22.

In some embodiments of the present invention, as shown in fig. 8, the air conditioning membrane assembly 30 may be in the form of a flat plate, and the air conditioning membrane assembly 30 may further include a support frame 32. The air-conditioning membranes 31 are preferably oxygen-enriched membranes, and can be two, and are arranged on two sides of the supporting frame 32, so that the two air-conditioning membranes 31 and the supporting frame 32 jointly enclose an oxygen-enriched gas collecting cavity. Further, the support frame 32 may include a frame, ribs and/or plates disposed within the frame, and the ribs, ribs and plates may form air flow channels therebetween, grooves may be formed on the surface of the ribs, and grooves may be formed on the surface of the plates to form air flow channels. The ribs and/or plates may increase the structural strength of the air conditioning membrane assembly 30, etc. That is, the support frame 32 has a first surface and a second surface parallel to each other, and the support frame 32 is formed with a plurality of gas flow passages extending over the first surface and the second surface, respectively, and extending through the support frame 32 to communicate the first surface and the second surface, the plurality of gas flow passages together forming an oxygen-enriched gas collection chamber; at least one air regulating membrane 31 is two planar air regulating membranes, which are respectively laid on the first surface and the second surface of the support frame 32.

In some embodiments of the present invention, the support frame 32 includes a gas extraction aperture 33 in communication with the at least one gas flow channel and positioned on the rim to allow oxygen in the oxygen-enriched gas collection chamber to be output. The suction hole 33 communicates with the suction pump 41. The air vent 33 may be disposed on a long edge of the frame or on a short edge of the frame, so as to be determined according to the disposed orientation or actual design requirements of the air regulating membrane assembly 30, for example, in the embodiment shown in fig. 6 and 7, the air vent 33 may be disposed on a long edge of the frame. The air-conditioning film 31 is firstly mounted on the frame through a double-sided adhesive tape 34, and then is sealed through a sealant 35.

In some embodiments, the support frame 32 may include: the frame, a plurality of first floor and a plurality of second floor. The first rib plates are arranged at intervals in the longitudinal direction and extend in the transverse direction in the frame, and one side surface of the first rib plates forms a first surface. The plurality of second rib plates are arranged at intervals along the transverse direction on the other side surface of the plurality of first rib plates and extend along the longitudinal direction, and the second surface is formed on the side surface of the plurality of second rib plates, which is far away from the first rib plates. The support frame 32 of the present invention ensures continuity of the air flow passage on the one hand, greatly reduces the volume of the support frame 32 on the other hand, and greatly enhances the strength of the support frame 32 by providing a plurality of first ribs spaced apart in the longitudinal direction and extending in the transverse direction and a plurality of second ribs extending in the longitudinal direction on one side surface of the aforementioned plurality of first ribs inside the frame thereof. In addition, the above structure of the support frame 32 ensures that the air-conditioning membrane 31 can be supported sufficiently, and can always maintain good flatness even under the condition that the negative pressure in the oxygen-enriched gas collection cavity is large, thereby ensuring the service life of the air-conditioning membrane assembly 30.

In a further embodiment, the plurality of first ribs may include: a plurality of first narrow ribs and a plurality of first wide ribs. The first wide rib plates are arranged at intervals, and the first narrow rib plates are arranged between two adjacent first wide rib plates. The aforementioned plurality of second ribs may include: the first narrow rib plates and the second wide rib plates are arranged at intervals, and the second narrow rib plates are arranged between two adjacent second wide rib plates. Those skilled in the art will readily appreciate that "wide" and "narrow" herein are relative terms.

In some embodiments, each of the first wide ribs is recessed inwardly from a side surface thereof forming the first surface to form a first groove; each of the second wide ribs is recessed inwardly from its side surface forming the second surface to form a second channel, thereby improving connectivity of its internal lattice structure while ensuring a small thickness (or volume) of the support frame 32.

In a further embodiment, a portion of the surface of each of the first wide ribs facing away from the first surface extends toward the second rib to be flush with the second surface, and is recessed inwardly from the portion of the surface flush with the second surface to form a third groove; the third grooves communicate with the portions where the second grooves intersect to form cross grooves. A part of the surface of at least one second wide rib plate facing away from the second surface extends towards the first rib plate to be level with the first surface, and a fourth groove is formed by inwards sinking the part of the surface level with the first surface; wherein the fourth groove communicates with a portion where the first groove intersects to form a cross groove.

In some embodiments of the present invention, to facilitate the flow of the air stream, the inner surface of the cover plate portion 225 may extend downwardly with a plurality of air guiding ribs to guide the air stream from the fan 60 to flow within the receiving chamber over the outer surface of each air regulating membrane 31 of the air regulating membrane assembly 30 facing away from the oxygen enriched gas collection chamber. The plurality of air guide rib plates can be divided into two groups, including a first group of air guide rib plates and a second group of air guide rib plates which are symmetrically arranged about a plane. Each set of air guide ribs includes a first air guide rib, at least one second air guide rib, and at least one third air guide rib. The first air guide rib extends from the air outlet of the centrifugal fan to one side of the accommodating chamber and extends to one lateral outer side of the air conditioning membrane assembly 30. Each second air guide rib is disposed between two first air guide ribs and between the air conditioning membrane assembly 30 and the centrifugal fan. Each third air guide rib is located at one lateral outer side of the air regulating membrane module 30 to guide the air flow such that the air flow enters the gap between the air regulating membrane module 30 and the bottom surface or the top surface of the accommodating chamber from both lateral sides of the air regulating membrane module 30.

In some embodiments of the present invention, 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, 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, the user first closes the drawer body 23 and then returns the handle down or up 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 invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention 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;

the refrigeration system is arranged on the box body and is configured to provide cold energy for the storage space; and the refrigeration system includes a compressor;

the air-conditioning membrane assembly is provided with at least one air-conditioning membrane and an oxygen-enriched gas collection cavity, the surrounding space of the air-conditioning membrane assembly is communicated with the air-conditioning fresh-keeping space, and the air-conditioning membrane assembly is configured to enable oxygen in the air flow of the surrounding space of the air-conditioning membrane assembly to penetrate through the air-conditioning membrane to enter the oxygen-enriched gas collection cavity more than nitrogen in the air flow of the surrounding space of the air-conditioning membrane assembly;

the air extracting device is arranged on the oxygen discharge flow path system so as to extract the gas penetrating into the oxygen-enriched gas collecting cavity to the outside of the storage container;

the oxygen exhaust flow path system comprises an oxygen exhaust pipeline and an airflow guide box body, an inlet of the oxygen exhaust pipeline is communicated with the oxygen-enriched gas collecting cavity, and the air extracting device is arranged on the oxygen exhaust flow path system; the gas flow guiding box body is independently defined or jointly defined with the box body to form a compressor accommodating cavity so as to accommodate the compressor, and an outlet of the oxygen discharge pipeline is communicated with the compressor accommodating cavity so that gas flowing out of the oxygen-enriched gas collecting cavity exchanges heat with the compressor in the compressor accommodating cavity;

the oxygen discharge pipeline comprises a connecting pipe section which is arranged behind the storage space, the upper end of the oxygen discharge pipeline is communicated with the oxygen-enriched gas collecting cavity of the air-conditioning membrane assembly, and the lower end of the oxygen discharge pipeline is communicated with the inlet of the air pump;

the connecting pipe section is arranged close to the side shell and the back plate in the box body, and is sleeved with a heat preservation sleeve or a heat preservation pipe.

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

a compressor bin is further defined in the box body, and extends along the transverse direction; and is also provided with

The compressor and the air extractor are both arranged in the compressor bin.

3. A refrigerating and freezing apparatus according to claim 2, wherein,

the air extractor and the compressor are arranged at one transverse end of the compressor bin;

the refrigerating system further comprises a condenser which is arranged at the other transverse end of the compressor bin;

the air extractor, the compressor and the condenser are arranged in sequence along the transverse direction.

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

the outlet of the oxygen discharge line is directed toward the compressor to blow the gas exiting the oxygen-enriched gas collection chamber toward the compressor.

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

the storage container is a drawer assembly comprising:

a drawer body slidably mounted within the drawer cylinder for operative outward extraction from the forward opening of the drawer cylinder and inward insertion into the drawer cylinder.

6. A refrigerating and freezing apparatus according to claim 5, wherein,

and an accommodating cavity communicated with the air-conditioning fresh-keeping space is arranged in the top wall of the drawer cylinder body so as to accommodate the air-conditioning membrane component.

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

at least one first vent hole and at least one second vent hole which is spaced from the at least one first vent hole are formed in the wall surface between the accommodating cavity and the modified atmosphere fresh-keeping space of the top wall of the drawer cylinder body so as to be communicated with the accommodating cavity and the modified atmosphere fresh-keeping space at different positions respectively;

the refrigerating and freezing device further comprises a fan which is arranged in the accommodating cavity to enable the air in the air-conditioned fresh-keeping space to return to the air-conditioned fresh-keeping space sequentially through the at least one first vent hole, the accommodating cavity and the at least one second vent hole.

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

the fan is a centrifugal fan and is arranged above the at least one first vent hole, and the rotation axis of the centrifugal fan is vertically downward;

the air-conditioning membrane component is in a flat plate shape and is arranged above the at least one second ventilation hole, so that each air-conditioning membrane of the air-conditioning membrane component is parallel to the top wall.

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

the air-conditioning membrane assembly further comprises a support frame, wherein the support frame is provided with a first surface and a second surface which are parallel to each other, a plurality of air flow channels which extend on the first surface and the second surface respectively and penetrate through the support frame to communicate the first surface and the second surface are formed on the support frame, and the plurality of air flow channels jointly form the oxygen-enriched gas collecting cavity;

the at least one air-conditioning film is two plane-shaped air-conditioning films which are respectively paved on the first surface and the second surface of the supporting frame.