CN107062746B

CN107062746B - Refrigerating and freezing device

Info

Publication number: CN107062746B
Application number: CN201611132136.3A
Authority: CN
Inventors: 马坚; 李晓峰; 姜波; 刘浩泉; 辛若武
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: 2021-02-19
Anticipated expiration: 2036-12-09
Also published as: WO2018103722A1; CN107062746A

Abstract

The invention provides a refrigerating and freezing device. The refrigerating and freezing device comprises: the refrigerator comprises a box body, a storage space is limited in the box body, a storage container is arranged in the storage space, and a modified atmosphere fresh-keeping space is arranged in the storage container; a modified atmosphere module configured such that more oxygen in the gas flow in the space surrounding the modified atmosphere module permeates the modified atmosphere module into the oxygen-enriched gas collection chamber than nitrogen in the gas flow in the space surrounding the modified atmosphere module; the air extracting device is communicated with the oxygen-enriched gas collecting cavity of the controlled atmosphere membrane component so as to extract and exhaust the gas penetrating into the oxygen-enriched gas collecting cavity to the outside of the storage container; and a filtration purification device configured to filter at least a portion of the gas flowing from the modified atmosphere space into the space surrounding the modified atmosphere module. The refrigerating and freezing device has the advantages of good fresh-keeping effect, small volume, low noise and low cost, and can prevent pollutants such as bacteria from polluting the modified atmosphere membrane component and prolong the service life of the modified atmosphere membrane.

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.

Furthermore, the inventors found that: because of the large size and high cost of nitrogen generation equipment traditionally used for modified atmosphere preservation, the technology is basically limited to be used in various large professional storage (the storage capacity is generally at least 30 tons). It can be said that the adoption of proper gas conditioning technology and corresponding devices can economically miniaturize and mute the gas conditioning system, so that the system is suitable for families or individual users, and is a technical problem which is desired to be solved by technicians in the field of gas conditioning preservation and 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 refrigerating and freezing device which creatively provides a gas atmosphere for discharging oxygen in the air in a controlled atmosphere fresh-keeping space out of the space so as to obtain nitrogen-rich and oxygen-poor air in the space to be beneficial to food fresh-keeping, and the gas atmosphere reduces the intensity of aerobic respiration of fruits and vegetables by reducing the content of the oxygen in the fruit and vegetable preservation space, simultaneously ensures the basic respiration and prevents the fruits and vegetables from anaerobic respiration, thereby achieving the purpose of long-term fresh-keeping of the fruits and vegetables.

A further object of the invention is to protect the modified atmosphere membrane module as much as possible to improve the service life of the modified atmosphere membrane module.

In order to achieve at least one of the above objects, the present invention provides a refrigerating and freezing apparatus comprising:

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

the modified atmosphere component is provided with at least one modified atmosphere film and an oxygen-enriched gas collecting cavity, the surrounding space of the modified atmosphere component is communicated with the modified atmosphere preservation space, and the modified atmosphere component is configured to enable more oxygen in the airflow of the surrounding space of the modified atmosphere component to penetrate through the modified atmosphere film and enter the oxygen-enriched gas collecting cavity relative to nitrogen in the airflow of the surrounding space of the modified atmosphere component;

the air pumping device is communicated with the oxygen-enriched gas collecting cavity of the gas regulating membrane module through a pipeline and pumps and exhausts the gas penetrating into the oxygen-enriched gas collecting cavity to the outside of the storage container; and

a filtration purification device mounted to the storage container and configured to filter at least a portion of the gas flowing from the modified atmosphere space into the space surrounding the modified atmosphere module.

Optionally, the storage container is a drawer assembly comprising:

a drawer cylinder having a forward opening and disposed in the storage space; and

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

Optionally, a holding cavity communicated with the modified atmosphere preservation space is arranged in the top wall of the drawer cylinder body to hold 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 between the accommodating cavity of the top wall of the drawer cylinder and the modified atmosphere space, so as to communicate the accommodating cavity and the modified atmosphere space at different positions, respectively; the refrigerating and freezing device also comprises a fan which is arranged in the accommodating cavity and used for promoting the air in the controlled atmosphere space to return to the controlled 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 filtration purification apparatus comprises a first filter mounted at the at least one first vent hole and such that the first filter covers the at least one first vent hole.

Optionally, the filtration purification apparatus further comprises a second filter net installed at the at least one second vent hole and making the second filter net cover the at least one second vent hole.

Optionally, the first filter screen and the second filter screen are both molecular sieve filter screens and contain a noble metal catalyst.

Optionally, the refrigerator freezer further comprises a sterilization device mounted to the top wall of the drawer cylinder and adjacent to the at least one first vent hole, configured to at least sterilize and/or disinfect the gas in the modified atmosphere space.

Optionally, the fan is a centrifugal fan, and is disposed above the at least one first vent hole such that the rotation axis of the centrifugal fan is vertically downward, and the air inlet of the centrifugal fan faces the at least one first vent hole;

the modified atmosphere component is in a flat plate shape, is arranged above the at least one second vent hole and is parallel to the top wall of the drawer cylinder.

Optionally, the modified atmosphere module further comprises a supporting frame having a first surface and a second surface parallel to each other, and the supporting frame 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 to communicate the first surface and the second surface, the plurality of gas flow channels together forming an oxygen-enriched gas collection cavity; 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 provided by the invention is provided with the controlled atmosphere membrane component and the air exhaust device, so that a nitrogen-rich and oxygen-poor gas atmosphere favorable for food preservation can be formed in the controlled atmosphere preservation space, the oxygen content of the fruits and vegetables in the fruit and vegetable preservation space is reduced by the gas atmosphere, the aerobic respiration strength of the fruits and vegetables is reduced, the basic respiration is ensured, and the fruits and vegetables are prevented from anaerobic respiration, so that the aim of preserving the fruits and vegetables for a long time is fulfilled. Particularly, the refrigerating and freezing device can also comprise a filtering and purifying device, can filter circularly flowing air, can filter dust, oil stain, peculiar smell substances and the like in the air, can decompose the oil stain, the peculiar smell gases and the like, can prevent pollutants such as bacteria and the like from polluting the atmosphere control membrane component, and can prolong the service life of the atmosphere control membrane. That is to say, the refrigerating and freezing device can purify the atmosphere-controlled fresh-keeping space and prolong the service life of the atmosphere-controlled film.

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. Moreover, the refrigerating and freezing device of the invention well solves the technical problems which are desired to be solved but are not successfully solved by the technicians in the field of modified atmosphere preservation. The refrigerating and freezing device of the invention not only has small volume, but also has 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 partial block diagram of a refrigeration freezer apparatus according to one embodiment of the present invention;

FIG. 3 is a schematic exploded view of the structure shown in FIG. 2;

FIG. 4 is an exploded view of a plenum module in a refrigeration chiller according to one embodiment of the present invention;

fig. 5 is a schematic block diagram of another perspective of the structure shown in fig. 1.

Detailed Description

Fig. 1 is a schematic partial structural view of a refrigerating and freezing apparatus according to an embodiment of the present invention, and fig. 2 is a schematic partial structural view of the refrigerating and freezing apparatus according to an embodiment of the present invention; fig. 3 is a schematic exploded view of the structure shown in fig. 2. As shown in fig. 1 to 3, the embodiment of the present invention provides a refrigerating and freezing apparatus, which may include a cabinet 20, a main door, a modified atmosphere module 30, an air extractor 40, and a refrigeration system.

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. Alternatively, the main door body may be one 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 drawer cylinder 22 and a drawer body 23. The drawer cylinder 22 may have a front opening and be disposed in the storage space 211, and particularly, may be disposed at a lower portion of the storage space 211. As can be appreciated by those skilled in the art, the drawer cylinder 22 may also be disposed in the 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 and insert into the drawer cylinder 22 outwardly from the forward opening of the drawer cylinder 22. The drawer body 23 may have a drawer end cap, and the drawer end cap may be matched with the opening of the drawer cylinder 22 to seal the modified atmosphere fresh-keeping space. In some alternative embodiments, the storage container may include a barrel and a door configured to open or close the barrel.

The refrigeration system may be configured to provide cooling to the storage space. For example, the refrigeration system may be a refrigeration cycle system constituted by a compressor, a condenser, a throttle 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 embodiments, the refrigeration system may also be a semiconductor refrigeration device.

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 gas-extracting device 40 can be communicated with the oxygen-enriched gas collecting cavity of the modified atmosphere module 30 through a pipeline 50 to extract the gas permeating into the oxygen-enriched gas collecting cavity out of the storage container.

In this embodiment, the air extracting device 40 extracts 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. And the requirements on the rigidity and the strength of the storage container and the like are lower, the realization requirement is very low, and the cost is also very low. The refrigerating and freezing device of the invention well solves the technical problems which are always desired to be solved but are not always successfully solved by the technical personnel in the field of modified atmosphere preservation. The refrigerating and freezing device of the invention not only has small volume, but also has low noise, and is particularly suitable for families and individuals.

In particular, in this embodiment, the refrigerated freezing apparatus can further comprise a filtration purification apparatus 70 mounted to the storage container and configured to filter at least a portion of the gas flowing from the modified atmosphere space into the space surrounding the modified atmosphere module. The atmosphere control fresh-keeping space can be purified to further keep fresh, and meanwhile, pollutants such as bacteria and the like can be prevented from entering the vicinity of the atmosphere control membrane assembly 30 to pollute the atmosphere control membrane assembly 30, so that the service life of the atmosphere control membrane 31 can be prolonged.

In some embodiments of the invention, as shown in fig. 2 and 3, the modified atmosphere module 30 can be disposed on the barrel wall of the drawer barrel 22. The modified atmosphere assembly 30 may be flat and may preferably be horizontally disposed on the top wall of the drawer cylinder 22. Specifically, a receiving cavity is provided in the top wall of the drawer cylinder 22 to receive the modified atmosphere module 30. For example, at least one first vent hole 222 and a second vent hole 223 are formed in a wall surface between the receiving cavity of the top wall of the drawer cylinder 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 drawer barrel 22 has a recessed groove on the inside of the top wall. The modified atmosphere module 30 is arranged in a concave groove on the top wall of the drawer cylinder 22.

In some embodiments of the present invention, to facilitate the flow of air between the modified atmosphere space and the receiving cavity, the refrigerated freezer may further comprise a blower 60, and the blower 60 may be disposed within the receiving cavity and configured to facilitate the flow of air from the modified atmosphere space into the receiving cavity via the first vent hole 222 and to facilitate the flow of air from the receiving cavity into the modified atmosphere space via 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.

In particular, as shown in fig. 3, the filtering and purifying device 70 includes a first filter 71 installed at the at least one first vent hole 222 such that the first filter 71 covers the at least one first vent hole 222. Preferably, the first filter 71 completely covers the at least one first vent hole 222 from above the at least one first vent hole. Further, in order to prevent the air in the modified atmosphere space from carrying contaminants such as oil and the like into the accommodating cavity of the top wall of the cylinder 22 through the at least one second vent 223 when the blower 60 stops working, the filtering and purifying device 70 further includes a second filter 72 installed at the at least one second vent 223 such that the second filter 72 covers the at least one second vent 223 from the upper side of the at least one second vent 223. Further preferably, the first filter 71 and the second filter 72 are both molecular sieve filters and contain a noble metal catalyst so as to decompose oil stains, odor gas, and the like.

In some embodiments of the present invention, the refrigerator freezer further comprises a sterilization device 80 mounted on the top wall of the drawer cylinder 22 and adjacent to the at least one first vent hole 222 to sterilize and/or disinfect the gas entering the receiving cavity as much as possible and preferentially, thereby preventing contamination of the modified atmosphere module 30 and protecting the modified atmosphere module 30 and the modified atmosphere membrane 31 therein. Alternatively, the disinfection device 80 may include a photocatalyst net and a light-emitting device (such as a blue light lamp); alternatively, the sterilizer 80 may include an ultraviolet lamp and a lamp housing.

In some embodiments of the present invention, the fan 60 is preferably a centrifugal fan, and is disposed within the receiving cavity at the first vent 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 drawer 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 at the front of the accommodating chamber, and the modified atmosphere module 30 is disposed at the rear of the accommodating chamber. That is, at least one first vent hole 222 is provided at the front of the top wall of the drawer cylinder 22; the at least one second vent hole 223 is disposed rearward of the at least one first vent hole 222. The sterilizer 80 may be disposed in front of the at least one first vent hole 222. Preferably, the light emitting device or the ultraviolet ray may include a circuit board extending in the lateral direction and a plurality of light emitting elements sequentially disposed at intervals in the lateral direction on the circuit board.

In some embodiments of the invention, as shown in fig. 4, 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 device 40. The air exhaust holes 33 may be disposed on the long edge of the frame, or on the short edge of the frame, as determined by the orientation of the modified atmosphere module 30 or the actual design requirements, for example, in the embodiment shown in fig. 2 and 3, 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 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 present invention, the top wall of the drawer 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. To facilitate the manufacture of the drawer cylinder 22, the main plate 224 may be integrally formed with the side wall, the bottom wall, and the rear wall of the drawer cylinder 22.

Further, to facilitate the flow of the air flow, a plurality of air guide ribs may extend downward from the inner surface of the cover portion 225 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 on the drawer cylinder 22, and the storage space 211 and the fresh air conditioning 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 drawer cylinder 22 may not have the 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 body 23 open, and compared with the existing vacuum storage chamber, the present invention can greatly save labor.

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 box body 20 may further define 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. 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.

Fig. 5 is a schematic block diagram of another perspective of the configuration shown in fig. 1. in some embodiments of the invention, as shown in fig. 5, the refrigeration system may include a compressor, and a compressor compartment 24 is further defined within the cabinet 20, the compressor compartment 24 extending in a transverse direction of the cabinet 20 and may preferably be disposed rearwardly and downwardly of the refrigerated space 25. The gas-extracting device 40 may comprise a gas-extracting pump, and an inlet of the gas-extracting pump is communicated with the oxygen-enriched gas collecting cavity of the modified atmosphere module 30 via a pipeline 50. Further, a gas-extracting device 40 is provided at one lateral end of the compressor compartment 24. The compressor may be located at the other lateral 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. When the freezer is a side-by-side refrigerator, the air extractor 40 can be located at either end of the compressor compartment 24. In other embodiments of the present invention, the air extractor 40 is disposed adjacent the compressor, and the air extractor 40 is 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 also include a mounting base and a sealed box. The mounting baseplate can be mounted on the bottom surface of the compressor bin through a plurality of vibration reduction foot pads. The seal box is installed in mounting plate. The air pump is arranged in the sealing box. That is, the suction pump may be disposed inside a sealed box that may be mounted within the compressor compartment 24 via a mounting plate. When the air pump operates, the sealing box can prevent noise and/or waste heat from spreading outwards to a great extent. Furthermore, in order to improve the damping and noise reduction effects, a plurality of damping foot pads (made of rubber) can be arranged on the mounting base plate. The number of the vibration reduction foot pads is preferably four, and the four vibration reduction foot pads are arranged in foot pad mounting holes formed in four corners of the mounting base plate.

The conduit 50 may comprise a connecting pipe section extending from top to bottom. The connecting pipe section is arranged behind the storage space 211, the lower end of the connecting pipe section is communicated with the inlet of the air pump, and the upper part of the connecting pipe section is communicated with the oxygen-enriched gas collecting cavity of the modified atmosphere membrane module 30. The connecting pipe section can be arranged close to the side shell and the back plate in the box body 20, and the connecting pipe section can be sleeved with a heat insulation sleeve or a heat insulation pipe, so that the cold energy in the oxygen in the connecting pipe section can be prevented from being transmitted to the side shell and the back plate, and the condensation can be prevented.

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

In some embodiments of the present invention, a locking device, a handle and a handle positioning device are disposed between the drawer body 23 and the drawer cylinder 22. The locking device comprises pivoting latches arranged on both sides of the drawer end cover, two buckling parts arranged on the drawer cylinder 22, and a clamping promoting device. Each of the fastening portions may be a protrusion. The clamping promoting device can be used for promoting the two pivoting lock catches to rotate towards the direction of clamping the two pivoting lock catches to the corresponding buckling parts (namely the first directions). The handle extends horizontally and can be slidably mounted on the drawer end cover along the vertical direction. Also, the position of the handle may be an initial position of the handle when the drawer body 23 is in the closed state. And the handle is configured to contact and abut against the two pivoting latches at two ends thereof respectively when in the initial position thereof, so as to prevent each pivoting latch from rotating in the other direction opposite to the respective first direction, so that the pivoting latches are kept in a matching state with the buckling parts, thereby locking the drawer body 23 to the drawer cylinder 22. Further, after the handle is moved up or down to the release-holding-lock position, i.e., from the initial position to the release-holding-lock position, each of the pivoting latches may be allowed to rotate in another direction opposite to the respective first direction, to allow the pivoting latch to rotate out of the respective engaging portion when the drawer body 23 is pulled outward, thereby allowing the drawer body 23 to be opened. The handle positioning device is configured to maintain the handle in various predetermined positions after the handle is moved to the positions, primarily the initial position and the unlocked position. When opening the drawer body, the user first moves the handle up or down to the release holding position, the handle positioning means holds the handle in this 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 to the original position downward or upward, and the handle positioning means holds the handle in that position, thereby keeping the drawer body 23 and the drawer cylinder 22 in the locked state.

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

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 box, it has the storing space to inject in the box, be provided with storing container in the storing space, the fresh-keeping space of gas conditioning has in the storing container, storing container is the drawer subassembly, and this drawer subassembly includes: the drawer cylinder is provided with a forward opening and is arranged in the storage space;

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;

the air extracting device is communicated with the oxygen-enriched gas collecting cavity of the controlled atmosphere membrane module through a pipeline so as to extract and exhaust the gas penetrating into the oxygen-enriched gas collecting cavity to the outside of the storage container; and

a filtration purification device mounted to the storage container and configured to filter at least a portion of the gas flowing from the modified atmosphere space into the space surrounding the modified atmosphere module, and

a containing cavity communicated with the modified atmosphere preservation space is arranged in the top wall of the drawer cylinder body so as to contain the modified atmosphere module;

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 and the modified atmosphere space on the top wall of the drawer cylinder body, so that the accommodating cavity and the modified atmosphere space are communicated at different positions respectively;

the refrigerating and freezing device also comprises a fan which is arranged in the accommodating cavity and is used for promoting 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;

the filtering and purifying device comprises a first filter screen which is arranged at the at least one first vent hole and enables the first filter screen to cover the at least one first vent hole.

2. A refrigerator-freezer according to claim 1,

the drawer assembly further comprises:

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

3. A refrigerator-freezer according to claim 1,

the filtration and purification device further comprises a second filter screen which is arranged at the position of the at least one second vent hole and enables the second filter screen to cover the at least one second vent hole.

4. A refrigerator-freezer according to claim 3,

the first filter screen and the second filter screen are both molecular sieve filter screens and contain a noble metal catalyst.

5. A refrigerator-freezer as claimed in claim 1, further comprising:

and the disinfection and sterilization device is arranged on the top wall of the drawer cylinder and is close to the at least one first vent hole, and is configured to disinfect and/or sterilize at least the gas in the modified atmosphere space.

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 rotation axis of the centrifugal fan is vertically downward, and an air inlet of the centrifugal fan faces the at least one first 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;

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.