CN106546054B

CN106546054B - Refrigerating and freezing device

Info

Publication number: CN106546054B
Application number: CN201611132811.2A
Authority: CN
Inventors: 王磊; 姜波; 王晶; 何国顺; 毕云龙
Original assignee: Haier Smart Home Co Ltd
Current assignee: Haier Smart Home Co Ltd
Priority date: 2016-12-09
Filing date: 2016-12-09
Publication date: 2022-07-26
Anticipated expiration: 2036-12-09
Also published as: CN106546054A

Abstract

The invention provides a refrigerating and freezing device. The method comprises the following steps: the drawer type refrigerator comprises a box body, wherein a storage space is limited in the box body, a drawer assembly is arranged in the storage space, and the drawer assembly is provided with a barrel, a drawer and a drawer box space; the modified atmosphere membrane assembly is arranged on the drawer, the peripheral space of the modified atmosphere membrane assembly is communicated with the space of the drawer box, and the modified atmosphere membrane assembly is provided with at least one modified atmosphere membrane and an oxygen-enriched gas collecting cavity and is configured to enable more oxygen in the airflow of the peripheral space of the modified atmosphere membrane assembly to penetrate through the modified atmosphere membrane and enter the oxygen-enriched gas collecting cavity relative to nitrogen in the airflow of the peripheral space of the modified atmosphere membrane assembly; and the air extractor is communicated with the oxygen-enriched gas collecting cavity through a pipeline so as to extract and exhaust the gas penetrating into the oxygen-enriched gas collecting cavity to the outside of the drawer assembly. The refrigeration and freezing device not only has good fresh-keeping effect, but also has lower requirements on the rigidity and the strength of the box body and the like, and has low realization requirement and low cost; and the volume is small, the noise is very low, and the device is particularly suitable for families and individuals.

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 also higher and higher. Therefore, 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 vacuum preservation mode which is often adopted is vacuum bag preservation and vacuum storage chamber preservation.

The vacuum bag is adopted for fresh keeping, so that the food storage of consumers needs to be vacuumized every time, the operation is troublesome, and the food storage bag is not loved by the consumers.

The vacuum storage chamber is adopted for fresh keeping, the box body and the like are of a rigid structure, 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 energy, and 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 the conventional nitrogen making equipment for modified atmosphere preservation, the technology is basically limited to be used in various large professional storage warehouses (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 method for discharging part of oxygen in the air in a drawer box space out of the space so as to obtain a nitrogen-rich and oxygen-poor gas atmosphere favorable for food preservation in the space, wherein the gas atmosphere reduces the oxygen respiration intensity of fruits and vegetables by reducing the oxygen content in the fruit and vegetable preservation space, and simultaneously ensures the basic respiration effect to prevent the fruits and vegetables from carrying out oxygen-free respiration, thereby achieving the purpose of long-term preservation of the fruits and vegetables.

In particular, the present invention provides a refrigeration and freezing apparatus comprising:

the drawer assembly comprises a cylinder and a drawer which is slidably arranged in the cylinder, and the drawer defines a drawer box space;

the gas regulating membrane component is arranged on the drawer, and the surrounding space of the gas regulating membrane component is communicated with the space of the drawer box or is positioned in the space of the drawer box; the modified atmosphere membrane module is provided with at least one modified atmosphere membrane and an oxygen-enriched gas collecting cavity, and the modified atmosphere membrane module is configured to enable more oxygen in the airflow of the space around the modified atmosphere membrane module to penetrate through the modified atmosphere membrane and enter the oxygen-enriched gas collecting cavity relative to nitrogen in the airflow of the space around the modified atmosphere membrane module; and

the air extractor is communicated with the oxygen-enriched gas collecting cavity through a pipeline so as to pump and discharge the gas penetrating into the oxygen-enriched gas collecting cavity to the outside of the drawer component.

Optionally, the barrel has a forward opening; the drawer is provided with a drawer end cover; the air adjusting membrane component is arranged on the drawer end cover.

Optionally, the modified atmosphere membrane component is in a flat plate shape and is arranged on the rear surface of the drawer end cover in an abutting mode or in the drawer end cover.

Optionally, a containing cavity communicated with the space of the drawer box is arranged in the drawer end cover 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 between the accommodating cavity of the drawer end cover and the drawer box space, so as to respectively communicate the accommodating cavity and the drawer box space at different positions; the refrigerating and freezing device further comprises a fan which is arranged in the accommodating cavity and used for promoting the air in the space of the drawer box to return to the space of the drawer box 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 in front of the at least one first vent hole, and the air inlet of the centrifugal fan faces the at least one first vent hole; the air-adjusting membrane component is arranged in front of the at least one second vent hole.

Optionally, the air extraction device is mounted to the box; the top wall of the cylinder body is provided with a pipeline protection channel extending along the longitudinal direction; at least part of the pipeline is arranged in the pipeline protection channel.

Optionally, at least part of the tubing is made of a resilient material to allow the tubing to flex along its length.

Optionally, a compressor bin is arranged at the rear end of the bottom of the box body, and the compressor bin extends along the transverse direction; and the air extractor is arranged at one transverse end of the compressor bin.

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 air adjusting membrane component and the air extracting device, so that a nitrogen-rich and oxygen-poor gas atmosphere which is beneficial to food preservation can be formed in the space of the drawer box, the oxygen content of the fruit and vegetable preservation space is reduced by the gas atmosphere, the aerobic respiration intensity of the fruit and vegetable is reduced, the basic respiration is ensured, the fruit and vegetable is prevented from being subjected to anaerobic respiration, and the purpose of long-term preservation of the fruit and vegetable is achieved.

Furthermore, the refrigerating and freezing device has good fresh-keeping effect, has lower requirements on the rigidity and the strength of the drawer assembly and the like, has low realization requirement 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 especially suitable for families and individuals.

Furthermore, the air-conditioning membrane assembly in the refrigerating and freezing device is arranged in the drawer, particularly arranged on the drawer end cover, so that the drawer assembly and the refrigerating and freezing device are attractive.

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 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 example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily to scale. In the drawings:

fig. 1 is a schematic partial structural view of a refrigeration freezer according to one embodiment of the 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 refrigeration freezer according to one embodiment of the 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. 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 refrigerating system, an air-conditioning membrane assembly 30, and an air extractor 40.

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 opposite-opening door bodies, both of which may be 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 a single door body. Further, a drawer assembly is disposed in the storage space 211. The drawer assembly may include a barrel 22 and a drawer 23. The 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 cylinder 22 may also be disposed in the middle or upper portion of the storage space 211. A drawer 23 is slidably disposed within the barrel 22 for operable withdrawal outwardly from and insertion inwardly into the barrel 22 from the forward opening of the barrel 22. The drawer 23 may have a drawer cover 231, and the drawer cover 231 may be fitted to the opening of the cylinder 22 to be sealed.

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 assembly 30 can be mounted to the drawer 23. The surrounding space of the modified atmosphere module 30 may be in communication with the drawer box space 232. Alternatively, the surrounding space of the atmosphere control assembly 30 may be located in the drawer space 232, that is, the atmosphere control assembly 30 is located in the drawer space 232. The modified atmosphere module 30 may have at least one modified atmosphere membrane 31 and an oxygen-enriched gas collection chamber and is configured such that more oxygen in the gas stream in the space surrounding the modified atmosphere module 30 passes 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. In particular, the inside surface of each modified atmosphere membrane 31 faces the oxygen-rich gas collection chamber to cause 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 surrounding space of the modified atmosphere module 30.

The air extracting device 40 is communicated with the oxygen-enriched gas collecting cavity of the modified atmosphere module 30 through a pipeline 50 so as to extract the gas permeating into the oxygen-enriched gas collecting cavity to the outside of the drawer assembly.

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 drawer box space 232 is communicated with the space around the atmosphere control membrane module 30 or the atmosphere control membrane module 30 is located in the drawer box space 232, the air in the drawer box space 232 can flow to the periphery of the atmosphere control membrane module 30, so that the oxygen in the air in the drawer box space 232 can enter the oxygen-enriched gas collecting cavity, and the nitrogen-enriched and oxygen-depleted gas atmosphere is obtained in the drawer box space 232 to be favorable for keeping food fresh.

The refrigerating and freezing device can form a nitrogen-rich and oxygen-poor gas atmosphere in the drawer box space 232 so as to be beneficial to food preservation, and the gas atmosphere reduces the aerobic respiration intensity of fruits and vegetables by reducing the oxygen content in the fruit and vegetable preservation space, ensures the basic respiration effect and prevents the fruits and vegetables from carrying out anaerobic respiration, thereby achieving the purpose of long-term preservation of the fruits and vegetables. Moreover, the gas atmosphere also has a large amount of gases such as nitrogen, the cooling efficiency of articles in the space 232 of the drawer box can not be reduced, and fruits and vegetables can be effectively stored. And the requirements on the rigidity and the strength of the drawer assembly 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 not only has small volume, but also has low noise, and is especially suitable for families and individuals.

In some embodiments of the invention, the modified atmosphere assembly 30 can be disposed on the drawer end 231. The air extractor 40 can be mounted to the tank 20. The top wall of the cylinder 22 has a line protection channel 221 extending in the longitudinal direction. At least a portion of the tubing 50 is disposed within the tubing protection channel 221. Further, to facilitate movement of the drawer 23, at least a portion of the tube 50 is made of an elastic material so that the tube 50 can be extended and retracted along the length thereof. For example, the portion of the pipeline 50 within the pipeline protection channel 221 may be a telescoping tube structure that is helically coiled, and in some instances may also be referred to as a spring tube because of the spring-like structure.

In some embodiments of the invention, as shown in fig. 3, the modified atmosphere assembly 30 may be flat and may preferably be disposed against the rear surface of the drawer end 231. In other embodiments of the present invention, the rear surface of the drawer end 231 has a groove. The modified atmosphere module 30 is arranged in the groove.

In still other embodiments of the present invention, a receiving cavity communicating with the drawer box space 232 is disposed in the drawer end 231 to receive the modified atmosphere module 30. For example, at least one first vent hole and one second vent hole are opened in a wall surface between the receiving cavity of the drawer end 231 and the drawer box space 232. The at least one first ventilation aperture is spaced apart from the at least one second ventilation aperture to communicate the receiving cavity with the drawer box space 232 at different locations, respectively. To facilitate the flow of gas within the drawer box space 232 and the receiving cavity, the refrigeration freezer may further include a blower disposed within the receiving cavity and configured to facilitate the gas within the drawer box space 232 to enter the receiving cavity via the first vent and to facilitate the gas within the receiving cavity to enter the drawer box space 232 via the second vent. That is, the blower may cause the gas of the drawer box space 232 to return to the drawer box space 232 via the at least one first vent, the receiving cavity, and the at least one second vent in that order. The fan is preferably a centrifugal fan and is arranged in front of the at least one first vent hole, and an air inlet of the centrifugal fan faces the at least one first vent hole; the air outlet of the centrifugal fan faces the modified atmosphere module 30. The modified atmosphere module 30 is arranged in front of the at least one second vent hole.

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, but may be another type of membrane that allows more oxygen to pass through than nitrogen. The number of the modified atmosphere membranes 31 is two, and the modified atmosphere membranes 31 are arranged on two sides of the supporting frame 32, so that the two modified atmosphere membranes 31 and the supporting frame 32 jointly enclose an oxygen-enriched 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 extending on the first surface, extending on the second surface, respectively, and penetrating the supporting frame 32 to communicate the first surface and the second surface, the plurality of gas flow channels collectively 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 passage, 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 outlet of the air exhaust hole 33 is the air exhaust port of the air-adjusting membrane module 30. The air exhaust holes 33 can be disposed on the long edge of the frame or the short edge of the frame to be determined according to the arrangement orientation or actual design requirements of the modified atmosphere module 30, for example, in the embodiment shown in fig. 2 and 3, the air exhaust holes 33 can be disposed on the short 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 gas 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 grid 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 has a plurality of first ribs spaced apart in the longitudinal direction and extending in the transverse direction and a plurality of second ribs spaced apart in the transverse direction and extending in the longitudinal direction on one side surface of the first ribs, so that the continuity of the airflow path 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 module 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 wide ribs is recessed inward from a side surface thereof forming the first surface to form a first groove; each second wide rib plate is recessed inwards from the surface of the second wide rib plate to form a second groove, so that the connectivity of the internal grid structure of the supporting frame 32 is improved on the premise that the thickness (or the volume) of the supporting 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 recessed 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, a plurality of micro holes may be opened on the cylinder 22, and the storage space 211 and the drawer space 232 are communicated via 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 3 mm. The arrangement of the plurality of micropores can prevent the pressure in the drawer box space 232 from being too low, and the arrangement of the plurality of micropores can prevent nitrogen in the drawer box space 232 from flowing to the large storage space 211, so that the nitrogen is very small even negligible even if flowing, and the storage of food in the drawer box space 232 can not be influenced. In some optional embodiments of the present invention, the cylinder 22 may not have the micro holes, even if a large amount of gas such as nitrogen exists in the drawer box space 232, a user does not need to use much effort when pulling the drawer 23 open, and compared with the existing vacuum storage chamber, the present invention can greatly save labor.

In some embodiments of the present invention, storage space 211 may be first storage space 211. The cabinet 20 further defines a second storage space 25 and at least one third storage space 26. The second storage space 25 is disposed below the first storage space 211, and at least one third storage space 26 is disposed between the first storage space 211 and the second storage space 25. Preferably, the first storage space 211 is a refrigerating compartment, and the storage temperature thereof is generally between 2 ℃ and 10 ℃, preferably between 3 ℃ and 8 ℃. The second storage space 25 may be a freezer compartment, and its internal temperature is generally in the range of-14 ℃ to-22 ℃. The third storage space 26 may be a temperature-variable chamber, and the temperature-variable chamber 26 may be adjusted as required to store suitable food. And the third storage spaces 26 are two and level in the horizontal direction. In some alternative embodiments of the present invention, the first storage space 211 may also be a freezing chamber or a temperature-changing chamber, that is, the temperature of the first storage space 211 may be controlled to be in a range of-14 ℃ to-22 ℃ or adjusted according to requirements. Furthermore, the relative positions of the first storage space, the second storage space and the third storage space can be adjusted according to actual requirements.

In some embodiments of the invention, as shown in fig. 5, the refrigeration system may be a compressor compression refrigeration system. Also defined within the bin 20 is a compressor compartment 24, the compressor compartment 24 preferably being disposed rearwardly and downwardly of the second stowage space 25. Preferably, the air extraction device can be disposed within the compressor compartment 24. Specifically, the compressor compartment 24 extends in the lateral direction of the box 20, and the air exhaust 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 to reduce noise and waste heat build-up. In other embodiments of the present invention, the air extraction device 40 is disposed adjacent the compressor, and the air extraction device 40 is disposed at one end of the compressor compartment 24 between the compressor and the side wall of the compressor compartment 24.

The drawer arrangement 40 may include a suction pump, a mounting plate, 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 installed in the sealing box, and the air pumping port of the air pump is communicated with the air exhaust port of the oxygen-enriched gas collecting cavity through a pipeline 50. When the air pump operates, the sealing box can prevent noise and/or waste heat from spreading outwards to a great extent. Furthermore, an installation frame is arranged in the sealing box, the installation frame is connected with the inner wall of the sealing box through a plurality of damping cushion blocks, and the air extracting pump is fixed in the installation frame, so that vibration and noise generated when the air extracting pump operates are reduced. 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 bottom surface. And two opposite sides of the mounting frame are respectively provided with a circular damping cushion block which is clamped in a clamping groove in the corresponding side wall 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.

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 extractor 40, and the upper part of the connecting pipe section is communicated with the oxygen-enriched gas collecting cavity of the air-conditioning membrane assembly 30. The connecting pipe section can be arranged close to the side shell and the back plate in the box body 20, and the connecting pipe section can be sleeved with a heat insulation sleeve or a heat insulation pipe, so that cold in oxygen in the connecting pipe section can be prevented from being transmitted to the side shell and the back plate, and condensation can be prevented.

In some embodiments of the invention, a locking device, a handle and a handle positioning device are provided between the drawer 23 and the barrel 22. The locking device includes a pivoting latch disposed on both sides of the drawer end 231, two buckling portions disposed on the cylinder 22, and a locking urging device. Each of the fastening portions may be a protrusion. The clamping urging device can be used for urging the two pivoting latches to rotate towards the direction of clamping to the corresponding buckling parts (namely, the first direction of each pivoting latch). The handle extends horizontally and is slidably mounted to the drawer cover 231 in a vertical direction. Also, the position of the handle when the drawer 23 is in the closed state may be an initial position of the handle. And the handle is configured such that in its initial position, both ends of the handle respectively abut against the two pivoting latches to prevent each pivoting latch from rotating in another direction opposite to the respective first direction, so that the pivoting latches maintain the engagement with the catches, thereby locking the drawer 23 to the barrel 22. Further, after the handle is moved up or down to the release-holding-locking position, i.e., from the initial position to the release-holding-locking position, each pivoting catch may be allowed to rotate in another direction opposite to the respective first direction, to allow the pivoting catch to rotate out of the corresponding engaging portion when the drawer 23 is pulled outward, thereby allowing the drawer 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, 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 23 outwards. When closing the drawer, the user first closes the drawer 23 and then returns the handle to the original position downward or upward, and the handle positioning means keeps the handle at that position, thereby keeping the drawer 23 and the 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 23 further comprises two sets of slides, each set of slides having at least three sliding grooves extending in the vertical direction, so that two sides of the guiding rod are provided with one sliding groove respectively, and the sliding block moves on the other sliding grooves, or two sides of the sliding block are provided with one sliding groove respectively, and the guiding rod moves on the other sliding grooves. For example, each set of slide ways may include four slide grooves, one slide groove being provided on each of the front and rear sides of the guide bar, and one slide groove being 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 drawer type refrigerator comprises a box body, wherein a storage space is defined in the box body, a drawer assembly is arranged in the storage space, the drawer assembly comprises a cylinder body and a drawer which is slidably arranged in the cylinder body, and the drawer defines a drawer box space; the barrel is provided with a plurality of micropores, so that the pressure in the space of the drawer box is not too low;

the atmosphere control membrane assembly is arranged on the drawer, and the surrounding space of the atmosphere control membrane assembly is communicated with the space of the drawer box or is positioned in the space of the drawer box; the modified atmosphere module is provided with at least one modified atmosphere membrane and an oxygen-enriched gas collecting cavity, and the modified atmosphere module is configured to enable more oxygen in the gas flow of the space around the modified atmosphere module to penetrate through the modified atmosphere membrane and enter the oxygen-enriched gas collecting cavity relative to nitrogen in the gas flow of the space around the modified atmosphere module; and

the air pumping device is communicated with the oxygen-enriched gas collecting cavity through a pipeline so as to pump and discharge the gas penetrating into the oxygen-enriched gas collecting cavity to the outside of the drawer assembly;

the barrel has a forward opening; the drawer is provided with a drawer end cover; and is provided with

The air adjusting membrane component is arranged on the drawer end cover;

a containing cavity communicated with the space of the drawer box is arranged in the drawer end cover 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 a wall surface between the accommodating cavity of the drawer end cover and the drawer box space so as to respectively communicate the accommodating cavity and the drawer box space at different positions;

the refrigerating and freezing device further comprises a fan which is arranged in the accommodating cavity and used for enabling the air in the drawer box space to return to the drawer box space through the at least one first vent hole, the accommodating cavity and the at least one second vent hole in sequence.

2. A refrigerator-freezer according to claim 1,

the modified atmosphere membrane component is in a flat plate shape and is arranged on the rear surface of the drawer end cover in an attached mode or in the drawer end cover.

3. A refrigerator-freezer according to claim 1,

the fan is a centrifugal fan and is arranged in front of the at least one first vent hole, and an air inlet of the centrifugal fan faces the at least one first vent hole;

the modified atmosphere module is arranged in front of the at least one second vent hole.

4. A refrigerator-freezer according to claim 1,

the air extracting device is arranged on the box body; and is

The top wall of the cylinder body is provided with a pipeline protection channel extending along the longitudinal direction;

at least a portion of the tubing is disposed within the tubing protection channel.

5. A refrigerator-freezer according to claim 4,

at least part of the conduit is made of an elastic material so that the conduit can be stretched along its length.

6. A refrigerator-freezer according to claim 4,

a compressor bin is arranged at the rear end of the bottom of the box body and extends along the transverse direction; and is

The air extracting device is arranged at one transverse end of the compressor bin.

7. A refrigerator-freezer according to claim 1,

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