CN106679274B

CN106679274B - Refrigerating and freezing device

Info

Publication number: CN106679274B
Application number: CN201611097472.9A
Authority: CN
Inventors: 夏恩品; 张�浩; 王英星; 何国顺; 朱小兵
Original assignee: Qingdao Haier Co Ltd
Current assignee: Qingdao Haier Co Ltd
Priority date: 2016-12-02
Filing date: 2016-12-02
Publication date: 2019-12-10
Anticipated expiration: 2036-12-02
Also published as: WO2018099463A1; CN106679274A

Abstract

The invention provides a refrigerating and freezing device. The refrigeration and freezing apparatus may include: the refrigerator comprises a box body, a storage space is limited in the box body, a storage container is arranged in a storage chamber, and the storage container is provided with an air-conditioning and fresh-keeping space; the modified atmosphere membrane component is provided with a modified atmosphere membrane and an oxygen-enriched gas collecting cavity, and the surrounding space of the modified atmosphere membrane component is communicated with the modified atmosphere fresh-keeping space; an inlet of the oxygen discharge pipeline is communicated with the oxygen-enriched gas collecting cavity; the air extracting device is arranged on the oxygen discharging pipeline; and a condensation preventing device configured to hinder cold energy in at least part of the length of the oxygen exhaust line from being transferred to the outside of at least part of the length. The refrigeration and freezing device provided by the invention can form a nitrogen-rich and oxygen-poor gas atmosphere in the air-conditioned fresh-keeping space of the storage space, so that the food fresh-keeping is facilitated, the purpose of keeping fruits and vegetables fresh for a long time is achieved, and the condensation of the side shell and the back plate can be avoided.

Description

refrigerating and freezing device

Technical Field

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

Background

The refrigerator is a refrigerating device for keeping constant low temperature, and is a civil product for keeping food or other articles in a constant low-temperature cold state. With the improvement of life quality, the requirements of consumers on the preservation of stored foods are higher and higher, and especially the requirements on the color, the taste and the like of the foods are higher and higher. Thus, the stored food should also ensure that the colour, mouthfeel, freshness etc. of the food remains as constant as possible during storage. At present, only one vacuum fresh-keeping method is available in the market for better food storage. The frequently adopted vacuum preservation mode is vacuum bag preservation and vacuum storage chamber preservation.

the vacuum bag is adopted for preserving the food, the vacuumizing action is required for the food storage of consumers every time, the operation is troublesome, and the food is not loved by the consumers.

the vacuum storage chamber is adopted for fresh keeping, the box body and the like are of rigid structures, the vacuum state is kept, the requirement on a vacuum pumping system is very high, the requirement on the sealing performance of the refrigerator is very high, and when one article is taken and placed, much new air rushes in, and the energy consumption is large. In addition, in a vacuum environment, the food is difficult to receive cold, which is particularly not beneficial to the storage of the food. In addition, since the refrigerator is in a vacuum environment, a user needs to take a lot of effort to open the refrigerator door and the like each time, which causes inconvenience in use. Although some refrigerators can ventilate the vacuum storage chamber through the vacuum pumping system, the time for waiting for the user is long, and the timeliness is poor. The refrigerator body and the like are seriously deformed due to long vacuum time, 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.

Disclosure of Invention

The invention aims to overcome at least one defect of the existing refrigerator and provides a refrigerating and freezing device which creatively provides a gas atmosphere for discharging oxygen in air in a space out of the space so as to obtain nitrogen-rich and oxygen-poor gas in the space to be beneficial to food preservation.

in particular, the invention provides a refrigerating and freezing device which can prevent cold energy in gas exhausted from a space from being transmitted to a shell and the like, thereby preventing condensation on the shell, particularly a side shell, a back plate and the like.

To this end, the present invention provides a refrigeration and freezing apparatus comprising:

The refrigerator comprises a refrigerator body, a storage space and a storage box, wherein the refrigerator body is internally limited with the storage space; a storage container is arranged in the storage space, and a controlled atmosphere fresh-keeping space is arranged in the storage container;

A modified atmosphere module having at least one modified atmosphere membrane and an oxygen-enriched gas collection chamber, and the ambient space of the modified atmosphere module being in communication with the modified atmosphere space, the modified atmosphere module being configured such that more oxygen in the air stream in the ambient space of the modified atmosphere module permeates the modified atmosphere membrane into the oxygen-enriched gas collection chamber than nitrogen in the air stream in the ambient space of the modified atmosphere module;

An inlet of the oxygen discharge pipeline is communicated with the oxygen-enriched gas collecting cavity of the modified atmosphere membrane module;

The air pumping device is arranged on the oxygen discharge pipeline so as to pump and discharge the gas penetrating into the oxygen-enriched gas collecting cavity to the outside of the storage container; and

-an anti-condensation device configured to at least partly hinder the transfer of cold in at least a part of the length of the oxygen outlet conduit to the outside of said at least part of the length.

Optionally, the condensation preventing device is a heat preservation pipe or a heat preservation sleeve, and is sleeved on at least part of the pipe section of the oxygen exhaust pipeline.

Optionally, the box includes:

the inner container is internally provided with the storage space; and

The shell is arranged on the outer side of the inner container and is provided with a back plate and two side shells;

Said at least a portion of said oxygen outlet conduit is located outside of said inner bladder and adjacent to one of said side shells and said back plate of said housing.

Optionally, the storage space is a refrigerated space; the refrigerator body is characterized in that a freezing space, a temperature changing space and a compressor bin are further defined by the refrigerator body, the freezing space is arranged below the storage space, and the temperature changing space is arranged between the freezing space and the refrigerating space; the compressor bin is arranged at the rear lower part of the freezing space.

Optionally, the air extraction device is arranged at the compressor bin; and is

The oxygen discharge pipeline comprises a vertical pipe section and is arranged behind the storage space;

the at least part of the pipe section of the oxygen discharge pipeline is the vertical pipe section.

Optionally, the storage container is a drawer assembly comprising:

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

a drawer slidably disposed within the barrel to operatively withdraw from and insert into the barrel outwardly from the forward opening of the barrel.

Optionally, a containing cavity communicated with the modified atmosphere preservation space is arranged in the top wall of the cylinder body to contain the modified atmosphere module.

Optionally, at least one first vent hole and at least one second vent hole spaced apart from the at least one first vent hole are formed in a wall surface of the top wall of the barrel between the accommodating cavity and the modified atmosphere space to communicate the accommodating cavity and the modified atmosphere space at different positions, respectively;

The refrigerating and freezing device further comprises a fan which is arranged in the accommodating cavity and used for enabling the air in the modified atmosphere space to return to the modified atmosphere space through the at least one first vent hole, the accommodating cavity and the 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; the modified atmosphere membrane assembly is arranged above the at least one second vent hole.

Optionally, the modified atmosphere module further comprises 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 gas flow channels extending on 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 gas flow channels together forming the oxygen-enriched gas collection chamber;

The at least one modified atmosphere film is two planar modified atmosphere films which are respectively laid on the first surface and the second surface of the supporting frame.

The refrigerating and freezing device is provided with the controlled atmosphere film component and the air extraction device, and the air extraction device can enable the pressure on one side of the controlled atmosphere film to be smaller than that on the other side, so that a nitrogen-rich and oxygen-poor gas atmosphere which is beneficial to food preservation can be formed in the controlled atmosphere preservation space.

particularly, the refrigeration and freezing device further comprises an anti-condensation device, so that cold air in at least part of the pipe section arranged close to the shell in the oxygen exhaust pipeline can be fully isolated from the outside, and condensation of the side shell and the back plate is avoided.

Furthermore, the refrigerating and freezing device has good fresh-keeping effect, has low requirements on the rigidity and the strength of the storage container and the like, has low realization requirements and has low cost. Furthermore, the refrigerating and freezing device of the invention has small volume and low noise, and is particularly suitable for families and individuals.

Further, the refrigerating and freezing apparatus 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, a semiconductor refrigeration refrigerator, or the like.

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

Drawings

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

FIG. 1 is a schematic partial block diagram of a refrigeration freezer apparatus according to one embodiment of the present invention;

FIG. 2 is a schematic block diagram of another perspective of the structure shown in FIG. 1;

Figure 3 is a schematic exploded view of a suction device in a refrigeration chiller according to one embodiment of the present invention;

FIG. 4 is a schematic partial block diagram of a refrigeration freezer apparatus according to one embodiment of the present invention;

FIG. 5 is a schematic exploded view of the structure shown in FIG. 4;

Fig. 6 is an exploded view of a plenum module in a refrigeration chiller according to one embodiment of the present invention.

Detailed Description

Fig. 1 is a schematic configuration diagram of a refrigerating and freezing apparatus according to an embodiment of the present invention, and fig. 2 is a schematic configuration diagram of another view of the configuration shown in fig. 1. As shown in fig. 1 and 2, the embodiment of the present invention provides a refrigerating and freezing apparatus, which may include a cabinet 20, a main door, a refrigeration system, a modified atmosphere module 30, an air extractor 40, and an oxygen discharge line 50.

A storage space 211 is defined in the case 20. For example, the cabinet 20 may include an inner container 21, and a storage space 211 is defined in the inner container 21. The main door body may be composed of two door bodies, both of which are rotatably installed in the cabinet 20 and configured to open or close the storage space 211 defined by the cabinet 20. The main door body can also be a door body. Further, a storage container is arranged in the storage space 211, and a modified atmosphere fresh-keeping space is arranged in the storage container. The air-conditioning 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 cylinder 22 and a drawer 23. The cylinder 22 is disposed in the storage space 211, and may be disposed at a lower portion of the storage space 211. As can be appreciated by those skilled in the art, the cylinder 22 may also be disposed in the middle or upper portion of the storage space 211. The drawer 23 is slidably mounted to the barrel 22 for operable withdrawal outwardly from the forward opening of the barrel 22 and inward insertion into the barrel 22. The drawer 23 may have a drawer end cap that mates with the opening of the barrel 22 to close the modified atmosphere space. In some alternative embodiments, the storage container may include a barrel and a door configured to open or close the barrel.

the refrigerating system can be a compression type refrigerating system, and is a refrigerating cycle system formed by a compressor, a condenser, a throttling device, an evaporator and the like. The evaporator is configured to directly or indirectly provide cooling energy into the storage space 211. For example, when the refrigerating and freezing apparatus is a compression-type direct-cooling refrigerator for home use, the evaporator may be provided outside or inside the rear wall surface of the inner container 21. When the refrigerating and freezing device is a household compression type air-cooled refrigerator, the refrigerator body 20 is also internally 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 perform circulating refrigeration on the storage space 211. In some alternative embodiments, the refrigeration system may also be other types of refrigeration devices, such as semiconductor refrigeration devices.

The modified atmosphere module 30 has at least one modified atmosphere film 31 and an oxygen-enriched gas collecting cavity, and the surrounding space is communicated with the modified atmosphere preservation space. The modified atmosphere module 30 can be configured such that more oxygen in the gas stream in the space surrounding the modified atmosphere module 30 permeates through the modified atmosphere membrane 31 into the oxygen-enriched gas collection chamber than nitrogen in the gas stream in the space surrounding the modified atmosphere module 30. Specifically, the inner surface of each modified atmosphere membrane 31 faces the oxygen-rich gas collection chamber to allow more oxygen in the air of the space outside the modified atmosphere module 30 to permeate through at least one modified atmosphere membrane 31 into the oxygen-rich gas collection chamber than nitrogen therein when the pressure of the oxygen-rich gas collection chamber is less than the pressure of the space surrounding the modified atmosphere module 30.

The inlet of the oxygen discharge pipeline 50 can be communicated with the oxygen-enriched gas collection cavity of the modified atmosphere module 30 to discharge oxygen in the modified atmosphere preservation space. The air-extracting device 40 is disposed on the oxygen discharging pipeline 50 to extract the air permeating into the oxygen-enriched air collecting chamber to the outside of the storage container.

In this embodiment, the air-extracting device is controlled to extract air outwards, so that the pressure of the oxygen-enriched air collecting cavity can be lower than the pressure of the space around the modified atmosphere module 30, and further, oxygen in the space around the modified atmosphere module 30 can enter the oxygen-enriched air collecting cavity. Because the atmosphere-controlled fresh-keeping space is communicated with the space around the atmosphere-controlled membrane module 30, the air in the atmosphere-controlled fresh-keeping space can enter the space around the atmosphere-controlled membrane module 30, so that the oxygen in the air in the atmosphere-controlled fresh-keeping space can also enter the oxygen-enriched air collecting cavity, and the nitrogen-enriched and oxygen-depleted air atmosphere can be obtained in the atmosphere-controlled fresh-keeping space to be beneficial to food fresh keeping.

the refrigerating and freezing device can form a nitrogen-rich and oxygen-poor gas atmosphere in the controlled atmosphere preservation space so as to be beneficial to food preservation, and the gas atmosphere reduces the intensity of aerobic respiration of fruits and vegetables by reducing the content of oxygen in the fruit and vegetable preservation space, ensures the basic respiration and prevents the fruits and vegetables from carrying out anaerobic respiration, thereby achieving the purpose of long-term preservation of the fruits and vegetables. In addition, the gas atmosphere also has a large amount of gases such as nitrogen and the like, the cooling efficiency of the articles in the modified atmosphere fresh-keeping space cannot be reduced, and the fruits, the vegetables and the like can be effectively stored.

In particular, in this embodiment of the invention, the refrigerated freezing apparatus may further comprise a condensation preventing device 70 configured to at least partially block the transfer of cold in at least part of the length of the oxygen outlet conduit 50 to the outside of at least part of the length, so as to prevent the transfer of cold to components adjacent to at least part of the length of the oxygen outlet conduit 50, thereby causing condensation and the like on these components. For example, the case 20 further includes a housing 27. The housing 27 is disposed outside the inner container 21, and has a back plate and two side cases. Because of the spatial position limitation, at least part of the pipe section of the oxygen exhaust pipeline 50 is positioned outside the inner container 21, and is close to one side shell and the back plate of the shell 21 and is close to the side shell and the back plate, and the condensation preventing device 70 is arranged to prevent condensation from being generated on the side shell and the back plate and influence on the sensory performance of the refrigeration and freezing device can be prevented.

In some embodiments of the present invention, the anti-condensation device 70 is a thermal insulation pipe or a thermal insulation sleeve, which is sleeved on at least a part of the pipe section of the oxygen discharging pipeline 50. The insulating tube is preferably a rubber insulating tube, and can ensure that cold air in the oxygen discharge pipeline is fully isolated from the outside, thereby avoiding condensation of the shell. Further, the gas extraction device 40 may be at the outlet end or in the middle of the oxygen exhaust line 50. In some alternative embodiments of the present invention, the anti-condensation device 70 may also be an electric heating net, which is sleeved on the oxygen discharging pipeline 50.

In some embodiments of the present invention, the storage space 211 is a refrigerated space, and the storage temperature is generally between 2 ℃ and 10 ℃, preferably between 3 ℃ and 8 ℃. Further, the case 20 may further define a compressor compartment 24, a freezing space 25, and a temperature-varying space 26, the freezing space 25 being disposed below the storage space 211, and the temperature-varying space 26 being disposed between the freezing space 25 and the refrigerating space. The temperature in the freezing space 25 is typically in the range of-14 ℃ to-22 ℃. The temperature-changing space 26 can be adjusted as needed to store suitable food. The compressor bin 24 is preferably disposed rearwardly and downwardly of the refrigerated 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 of the storage space 211 may be controlled to be in the range of-14 ℃ to-22 ℃ or adjusted according to the requirement. Furthermore, the relative positions of the refrigerating space, the freezing space and the temperature changing space can be adjusted according to actual requirements.

the air extraction device 40 is preferably disposed in the compressor compartment 24; and the oxygen discharge pipe 50 includes a vertical pipe section disposed at the rear of the storage space 211. At least part of the pipe sections of the oxygen discharge pipeline are vertical pipe sections. The vertical pipe section may extend from the upper plate of the compressor compartment 24 to the rear of the storage space 211, that is, the upper end of the rubber heat-insulating pipe is located at the rear of the storage space 211, and the lower end of the rubber heat-insulating pipe is located at the upper plate of the compressor compartment 24, and the connection with the oxygen discharge pipe 50 is bundled by a binding tape. The rubber insulating tube is elastic and can tightly wrap the oxygen discharge pipeline 50, thereby providing excellent heat insulation performance. In this embodiment, the air extractor 40 is disposed in the compressor compartment 24, and the space of the compressor compartment 24 can be fully utilized without occupying additional space, so that the additional volume of the refrigeration and freezing device is not increased, and the refrigeration and freezing device can be made compact.

in some embodiments of the present invention, the compressor compartment 24 extends in a lateral direction of the tank 20, and the air extraction device 40 may be disposed at one lateral end of the compressor compartment 24. The compressor may be located at the other end of the compressor compartment 24 so that the air extraction device 40 is located a relatively large distance from the compressor, reducing noise and waste heat buildup. For example, the air extractor device 40 may be disposed at an end of the compressor compartment 24 adjacent the main door body pivot side. In other embodiments of the present invention, the air extractor device 40 may be disposed adjacent the compressor, with the air extractor device 40 disposed at one end of the compressor compartment 24, between the compressor and the sidewall of the compressor compartment 24.

in some embodiments of the present invention, the gas-withdrawal device 40 may comprise only a gas-withdrawal pump 41, the withdrawal port of which is connected to the exhaust of the oxygen-enriched gas collection chamber via an oxygen discharge line 50. In other embodiments of the present invention, figure 3 is a schematic exploded view of a suction device 40 in a refrigeration chiller according to one embodiment of the present invention. As shown in FIG. 3, in some embodiments of the present invention, the gas-withdrawal device 40 may further comprise a mounting base 42 and a sealed box 43. Mounting base plate 42 may be mounted to the bottom surface of compressor case 24 by a plurality of shock absorbing foot pads 44. The seal box 43 is attached to the mounting base plate 42. The suction pump 41 is installed in the hermetic case 43. That is, the suction pump 41 may be disposed inside a sealing box 43, and the sealing box 43 may be installed in the compressor compartment 24 through the installation base plate 42. The sealing box 43 can largely block the outward propagation of noise and/or waste heat when the suction pump 41 is operated. Further, to improve the damping and noise reduction effects, a plurality of damping pads 44 (which may be made of rubber) may be mounted on the mounting base plate 42. The number of the vibration-damping foot pads 44 is preferably four, and the four vibration-damping foot pads 44 are installed in foot pad installation holes formed at four corners of the installation base plate 42.

In some embodiments of the present invention, a mounting frame is disposed inside the sealing case 43, the mounting frame is connected to the inner wall of the sealing case 43 by a plurality of damping 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, the bottom of installation frame is provided with two damping cushion blocks, and the damping cushion block cover is established on the reference column of seal box 43 bottom surface. Two opposite sides of the mounting frame are respectively provided with a circular damping cushion block, and the damping cushion blocks are clamped in clamping grooves in corresponding side walls of the sealing box 43. And the other two opposite sides of the mounting frame are respectively fixed with a damping cushion block. The suction pump 41 may be located between respective damping blocks within a sealed box 43 and fastened to the mounting frame by screws.

In some embodiments of the invention, as shown in fig. 4 and 5, the modified atmosphere assembly 30 can be disposed on the barrel wall of the barrel 22. The modified atmosphere assembly 30 may be flat and may preferably be disposed horizontally on the top wall of the cylinder 22. Specifically, a containing cavity 221 is arranged in the top wall of the cylinder 22 to contain the modified atmosphere module 30. For example, at least one first vent hole 222 and a second vent hole 223 are formed in the wall surface between the receiving cavity of the top wall of the barrel 22 and the modified atmosphere space. The at least one first vent 222 is spaced apart from the at least one second vent 223 to communicate the receiving cavity with the modified atmosphere space at different locations, 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 can be multiple. In some alternative embodiments, the top wall of the cartridge 22 has a recessed groove on the inside. The modified atmosphere module 30 is arranged in a concave groove on the top wall of the cylinder 22.

in some embodiments of the present invention, to facilitate the flow of the gas in the modified atmosphere space and the receiving cavity 221, the refrigerated freezer may further comprise a blower 60, and the blower 60 may be disposed in the receiving cavity and configured to facilitate the gas in the modified atmosphere space to enter the receiving cavity 221 through the first vent hole 222 and to enable the gas in the receiving cavity 221 to enter the modified atmosphere space through the second vent hole 223. That is, the fan 60 can cause the air in the modified atmosphere space to return to the modified atmosphere space through the at least one first vent 222, the receiving cavity, and the at least one second vent 223 in that order.

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

In some embodiments of the invention, as shown in fig. 6, the modified atmosphere module 30 can be in the form of a flat plate, and the modified atmosphere module 30 can further include a support frame 32. The modified atmosphere membrane 31 is preferably an oxygen-rich membrane, and can be two, and is arranged on two sides of the supporting frame 32, so that the two modified atmosphere membranes 31 and the supporting frame 32 together form an oxygen-rich gas collecting cavity. Further, the supporting frame 32 may include a frame, and rib plates and/or flat plates disposed in the frame, wherein airflow channels may be formed between the rib plates, between the rib plates and the flat plates, and grooves may be formed on the surfaces of the rib plates and the surfaces of the flat plates to form the airflow channels. The ribs and/or plates can improve the structural strength of the modified atmosphere module 30, and the like. That is, the supporting frame 32 has a first surface and a second surface parallel to each other, and the supporting frame 32 is formed with a plurality of gas flow channels respectively extending on the first surface and the second surface and penetrating through the supporting frame 32 to communicate the first surface and the second surface, the plurality of gas flow channels together forming an oxygen-enriched gas collecting chamber; the at least one modified atmosphere film 31 is two planar modified atmosphere films, 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 pumping hole 33 in communication with the at least one gas flow channel, disposed 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 tail end of the air exhaust hole 33 is an air exhaust port of the air adjusting membrane module 30. Specifically, the air exhaust holes 33 may be disposed on the long edge of the frame, or on the short edge of the frame, so as to be determined according to the disposition orientation of the modified atmosphere module 30 or the actual design requirements, for example, in the embodiment shown in fig. 4 and 5, the air exhaust holes 33 may be disposed on the long edge of the frame. The modified atmosphere film 31 is firstly installed on the frame through the double-sided adhesive tape 34 and then sealed through the sealant 35.

in some embodiments, the at least one air flow passage formed inside the support frame 32 may be one or more cavities communicating with the suction holes 33. In some embodiments, the aforementioned at least one airflow channel formed inside the support frame 32 may have a mesh structure. Specifically, the support frame 32 may include: the frame, a plurality of first floor and a plurality of second floor. The first ribbed plates are arranged in the frame at intervals along the longitudinal direction and extend along the transverse direction, and one side surfaces of the first ribbed plates form a first surface. The second ribs are arranged on the other side surfaces of the first ribs at intervals along the transverse direction and extend along the longitudinal direction, and the side surfaces of the second ribs far away from the first ribs form second surfaces. The supporting frame 32 of the present invention is provided with a plurality of first ribs spaced apart in the longitudinal direction and extending in the lateral direction and a plurality of second ribs spaced apart in the lateral direction and extending in the longitudinal direction on one side surface of the first ribs, so that the continuity of the airflow channel is ensured, the volume of the supporting frame 32 is greatly reduced, and the strength of the supporting frame 32 is greatly enhanced. In addition, the structure of the supporting frame 32 ensures that the modified atmosphere membrane 31 can obtain enough support, and can always keep better flatness even under the condition of larger negative pressure in the oxygen-enriched gas collecting cavity, thereby ensuring the service life of the modified atmosphere 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 rib plates are arranged at intervals, and the first narrow rib plates are arranged between every two adjacent first rib plates. The plurality of second ribs may include: the second rib plates are arranged at intervals, and the second rib plates are arranged between every two adjacent second rib plates. Those skilled in the art will readily appreciate that the terms "wide" and "narrow" are used herein in a relative sense.

In some embodiments, each of the first broad ribs is recessed inward from a side surface thereof on which the first surface is formed to form a first groove; each second rib plate is recessed inward from the surface of the second surface to form a second groove, so that the connectivity of the internal grid structure of the support frame 32 is improved on the premise of ensuring that the thickness (or volume) of the support frame is small.

in a further embodiment, a part of the surface of each first wide rib facing away from the first surface extends toward the second rib to be flush with the second surface, and a third groove is formed by recessing inward from the part of the surface flush with the second surface; the third groove is communicated with the crossed part of the second groove to form a cross groove. Part of the surface of at least one second wide rib in the plurality of second wide ribs, which is far away from the second surface, extends towards the first wide rib to be flush with the first surface, and the part of the surface, which is flush with the first surface, is inwards recessed to form a fourth groove; wherein the fourth groove is communicated with the crossed part of the first groove to form a cross groove.

In some embodiments of the invention, to facilitate the flow of the air flow, the inner surface of the cover portion 225 may extend downward with a plurality of air guide ribs to guide the air flow from the fan 60 to flow through the outer surface of each modified atmosphere membrane 31 of the modified atmosphere module 30 facing away from the oxygen-enriched air collection chamber in the receiving chamber. The plurality of air guide rib plates can be divided into two groups, and the two groups of air guide rib plates comprise a first group of air guide rib plates and a second group of air guide rib plates, wherein the first group of air guide rib plates and the second group of air guide rib plates are symmetrically arranged on the first group of air guide rib plates relative to a plane. Each group of air guide rib plates comprises a first air guide rib plate, at least one second air guide rib plate and at least one third air guide rib plate. The first air guide rib plate extends from the air outlet of the centrifugal fan to one side of the accommodating cavity and extends to one transverse outer side of the air-conditioning membrane assembly 30. Each second air guide rib plate is arranged between the two first air guide rib plates and is positioned between the air-conditioning membrane assembly 30 and the centrifugal fan. Each third air guiding rib is located on one lateral outer side of the modified atmosphere module 30 to guide the air flow to enter the gap between the modified atmosphere module 30 and the bottom surface or the top surface of the accommodating cavity from two lateral sides of the modified atmosphere module 30.

in some embodiments of the present invention, a plurality of micro holes may be formed in the cylinder 22, and the storage space 211 and the air-conditioning fresh-keeping space are communicated through the plurality of micro holes. The micropores may also be referred to as air pressure balance holes, and each micropore may be a millimeter-sized micropore, for example, each micropore having a diameter of 0.1mm to 3mm, preferably 1mm, 1.5mm, or the like. The arrangement of the plurality of micropores can prevent the pressure in the modified atmosphere preservation space from being too low, and the arrangement of the plurality of micropores can not make nitrogen in the modified atmosphere preservation space flow to the large storage space 211, so that the nitrogen flows very little or even negligibly, and the preservation of food in the modified atmosphere preservation space can not be influenced. In some optional embodiments of the present invention, the cylinder 22 may not have micro holes, even if a large amount of gas such as nitrogen exists in the modified atmosphere fresh-keeping space, the user does not need to take too much effort when pulling the drawer 23 open, and compared with the existing vacuum storage chamber, the present invention can greatly save labor.

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

Claims

1. A refrigeration freezer apparatus, comprising:

The refrigerator comprises a refrigerator body, a storage space is limited in the refrigerator body, a storage container is arranged in the storage space, and a controlled atmosphere fresh-keeping space is arranged in the storage container;

-an anti-condensation device configured to at least partially hinder the transfer of cold within at least part of the length of the oxygen exhaust line to the outside of said at least part of the length; and is

the storage container is a drawer assembly, including:

A drawer slidably disposed within the barrel to operatively withdraw from and insert into the barrel outwardly from a forward opening of the barrel;

a containing cavity communicated with the modified atmosphere preservation space is arranged in the top wall of the cylinder body so as to contain the modified atmosphere component; at least one first vent hole and at least one second vent hole spaced from the at least one first vent hole are formed in the wall surface between the accommodating cavity of the top wall of the barrel and the modified atmosphere space so as to respectively communicate the accommodating cavity and the modified atmosphere space at different positions;

2. A refrigerator-freezer according to claim 1,

the anti-condensation device is a heat preservation pipe or a heat preservation sleeve, and is sleeved on at least part of the pipe section of the oxygen discharge pipeline.

3. a refrigerator-freezer as claimed in claim 1, wherein the cabinet comprises:

The inner container is internally provided with the storage space; and

4. A refrigerator-freezer according to claim 3,

The storage space is a refrigerating space; the refrigerator body is characterized in that a freezing space, a temperature changing space and a compressor bin are further defined by the refrigerator body, the freezing space is arranged below the storage space, and the temperature changing space is arranged between the freezing space and the refrigerating space; the compressor bin is arranged at the rear lower part of the freezing space.

5. A refrigerator-freezer according to claim 4,

the air extracting device is arranged on the compressor bin; and is

6. a refrigerator-freezer according to claim 1,

the fan is a centrifugal fan and is arranged above the at least one first vent hole;

The modified atmosphere membrane assembly is arranged above the at least one second vent hole.

7. A refrigerator-freezer according to claim 1,

The gas-regulating membrane assembly also comprises a supporting frame, a first oxygen-enriched gas collecting cavity and a second oxygen-enriched gas collecting cavity, wherein the supporting frame is provided with a first surface and a second surface which are parallel to each other, and a plurality of gas flow channels which penetrate through the supporting frame to communicate the first surface with the second surface are formed on the supporting frame;