CN111637672A

CN111637672A - A kind of refrigerator

Info

Publication number: CN111637672A
Application number: CN202010385574.0A
Authority: CN
Inventors: 朱雪峰; 胡哲; 宾丽敏; 周伟洪; 许锦潮
Original assignee: Hisense Ronshen Guangdong Refrigerator Co Ltd
Current assignee: Hisense Ronshen Guangdong Refrigerator Co Ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2020-09-08
Anticipated expiration: 2040-05-08
Also published as: CN111637672B; JP7473682B2; EP4148349A1; EP4148349A4; WO2021223455A1; JP2023523732A

Abstract

The invention relates to the technical field of refrigeration equipment, and discloses a refrigerator which comprises a refrigerator body, a drawer seat, a drawer body and an air-conditioning membrane component, wherein a storage cavity is defined in the drawer body, the drawer body is arranged in the drawer seat, an installation cavity is defined between the rear side of the drawer seat and the drawer body, a backflow cavity is defined between the left side and/or the right side of the drawer seat and the drawer body, the air-conditioning membrane component is arranged in the installation cavity and comprises at least one layer of air-conditioning membrane and an air suction pump, an air suction port of the air suction pump is communicated with the air-conditioning membrane component, air in the storage cavity enters the installation cavity under the suction of the air suction pump, the amount of oxygen in the air allowed by the air-conditioning membrane is larger than that of the nitrogen, the air rich in oxygen and lean in nitrogen is sucked by the air suction pump, at least part of nitrogen in the air is prevented from remaining in the installation cavity and flowing back to the cavity through the backflow cavity, the gas conditioning efficiency is greatly improved.

Description

A kind of refrigerator

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to a refrigerator.

Background

The refrigerator is a refrigerating device which keeps constant low temperature, and is also a household appliance which keeps 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.

Research shows that the respiration of animals and plants, the growth and reproduction of oxygen consuming microorganisms, the oxidation and the like are closely related to the oxygen concentration. With the decrease of the oxygen concentration, the respiration and metabolic reactions of the plants are weakened, and even the plants enter a dormant state; the life activities of some pests and microorganisms are inhibited, and the growth and the reproduction are weakened or even stopped; the oxidation is reduced. Thereby effectively reducing the consumption of nutrient substances of fruits and vegetables and delaying the maturity and aging of fruits; the growth and the propagation of pests and microorganisms are reduced, and the occurrence of plant diseases and insect pests and rot is inhibited; the oxidative deterioration of some nutrient components, the oxidative discoloration of fruits and the like are reduced, and the fresh-keeping period of fruits and vegetables is effectively prolonged.

During the period that the fruits and vegetables are placed in the refrigerator for storage after being picked, life activities such as respiration and metabolism are still carried out, the respiration of the fruits and vegetables is inhibited and the metabolism process of the fruits and vegetables is delayed by controlling conditions such as temperature and oxygen concentration in the refrigerator, the freshness and commodity of the fruits and vegetables are better kept, and the storage period and the preservation period of the fruits and vegetables are prolonged.

At present, in some refrigerators in the market, the gas exchange and deoxygenation are performed in a mode that the gas-regulating membrane module is arranged at the top of the gas-regulating fresh-keeping drawer seat, so that the thickness of the drawer seat is increased, the connection with an air pump needs to be realized through a long gas pipeline, the defects of difficult heat dissipation, difficult replacement, resonance with a compressor and the like exist, and the gas-regulating membrane module only acts on air in the range of the top of the drawer seat, the effective flow of the air in the drawer seat cannot be realized, and the gas regulation efficiency is low.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: how to improve the gas regulation efficiency in the storage chamber.

In order to solve the above technical problem, the present invention provides a refrigerator, comprising:

a case for forming a low-temperature storage space;

the drawer seat is arranged in the low-temperature storage space, and the front end of the drawer seat is open and is hollow;

the drawer body is internally limited with a storage cavity, the drawer body is arranged in the drawer seat, an installation cavity is limited between the rear side of the drawer seat and the drawer body, the installation cavity is communicated with the storage cavity, a backflow cavity is limited between the left side and/or the right side of the drawer seat and the drawer body, and the installation cavity and the storage cavity are respectively communicated with the backflow cavity;

the modified atmosphere membrane assembly is arranged in the installation cavity and comprises at least one layer of modified atmosphere membrane; and

the air suction pump is arranged in the low-temperature storage space, and an air suction port of the air suction pump is communicated with the air-conditioning membrane component;

under the suction of the air suction pump, air in the storage cavity passes through the air-conditioning film in the mounting cavity to be subjected to oxygen removal and filtration, and then flows back to the storage cavity through the backflow cavity.

Preferably, a first vent hole for communicating the storage cavity with the backflow cavity is formed in the front end of the left side plate and/or the front end of the right side plate of the drawer body.

Preferably, the modified atmosphere module comprises:

the mounting frame is connected with the drawer seat; and

the two air-conditioning membranes are respectively connected to the front side and the rear side of the mounting frame, an oxygen-enriched gas accommodating cavity is defined between the two air-conditioning membranes and the mounting frame, and an air suction port of the air suction pump is communicated with the oxygen-enriched gas accommodating cavity.

Preferably, a plurality of partition plates are arranged in the mounting frame, the partition plates are arranged in a cross mode to divide the oxygen-enriched gas containing cavity into a plurality of cavities, and the partition plates are provided with through holes for communicating two adjacent cavities.

As a preferred scheme, the outer sides of the air-conditioning films are provided with hollowed-out supporting plates, and the two supporting plates are buckled with each other.

Preferably, the number of the controlled atmosphere membrane modules is two, the controlled atmosphere membrane modules are respectively arranged at the left side and the right side of the installation cavity, the two oxygen-enriched gas containing cavities are communicated through a connecting pipe, and an air suction port of the air suction pump is communicated with the connecting pipe.

Preferably, the method further comprises

The fixed plate is connected with the drawer seat to divide the installation cavity into a front cavity and a rear cavity, a second vent communicated with the front cavity and the rear cavity is formed in the fixed plate, and a fixing piece used for installing the modified atmosphere membrane module is arranged on the rear side face of the fixed plate.

Preferably, a third air vent is formed in the rear side plate of the drawer body, and an air guide ring is arranged between the second air vent and the third air vent.

Preferably, a fan is arranged on the rear side surface of the fixing plate, an air inlet of the fan is communicated with the second vent, and an air outlet of the fan faces the modified atmosphere module.

Preferably, a sealing ring matched with the front opening of the drawer seat is arranged at the front end of the drawer body.

As a preferred scheme, a cooling air duct is arranged on the top wall of the drawer seat.

Compared with the prior art, the refrigerator provided by the invention has the beneficial effects that:

according to the invention, the storage cavity of the drawer body is used for storing food, under the suction of the air pump, air in the storage cavity enters the installation cavity, the air adjusting film allows oxygen in the air to pass through in a quantity larger than that of nitrogen and can block at least part of nitrogen in the air, the air pump is used for pumping oxygen-rich nitrogen-poor gas out, the gas blocked in the installation cavity is nitrogen-rich gas, and then the nitrogen-rich gas flows back to the storage cavity through the backflow cavity, so that the air in the drawer seat is subjected to oxygen removal and filtration in a circulating flow mode, the gas adjusting efficiency is greatly improved, the oxygen respiration intensity of fruits and vegetables is reduced, and the purpose of long-term preservation of the fruits and vegetables is achieved.

Drawings

Fig. 1 is a schematic view of the internal structure of a drawer assembly and a modified atmosphere assembly in a refrigerator according to a preferred embodiment of the present invention.

FIG. 2 is an exploded view of a drawer assembly and a modified atmosphere module in a refrigerator according to a preferred embodiment of the present invention.

Fig. 3 is a schematic structural view of a gas conditioning membrane module in a refrigerator according to a preferred embodiment of the present invention.

Fig. 4 is a schematic structural view of an air conditioning membrane module, a fixing plate and a fan in a refrigerator according to a preferred embodiment of the present invention.

Fig. 5 is a schematic structural view of a drawer body in a refrigerator according to a preferred embodiment of the present invention.

Fig. 6 is a schematic structural view of a drawer base and a fixing plate in a refrigerator according to a preferred embodiment of the present invention.

Fig. 7 is a schematic view of the internal structure of a refrigerator according to a preferred embodiment of the present invention.

In the figure:

1. a box body; 2. a drawer base; 3. a drawer body; 4. a storage chamber; 5. a mounting cavity; 6. a reflux cavity; 7. air-conditioning film; 8. an air pump; 9. an air suction port; 10. a pipeline; 11. an exhaust port; 12. a first vent; 13. installing a frame; 14. an oxygen-enriched gas accommodating cavity; 15. an air outlet; 16. a partition plate; 17. a cavity; 18. a through hole; 19. a support plate; 20. a fastening part; 21. buckling the groove; 22. a connecting pipe; 23. a fixing plate; 24. a second vent; 25. a fixing member; 26. a notch; 27. a third vent; 28. a wind guide ring; 29. a fan; 30. connecting columns; 31. a seal ring; 32, a U-shaped groove; 33. an air duct cover plate; 34. a guide structure; 35. and (5) a locking structure.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "connected," "fixed," and the like are used in a broad sense, and for example, the terms "connected," "connected," and "fixed" may be fixed, detachable, or integrated; the connection can be mechanical connection or welding connection; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 7, a refrigerator according to a preferred embodiment of the present invention includes a refrigerator body 1, a drawer base 2, a drawer body 3, and an air conditioning membrane module, wherein the refrigerator body 1 is used to form a low-temperature storage space, the drawer base 2 is disposed in the low-temperature storage space, and the front end of the drawer base 2 is open and hollow; a storage cavity 4 is defined inside the drawer body 3, the drawer body 3 is installed in the drawer seat 2, an installation cavity 5 is defined between the rear side of the drawer seat 2 and the drawer body 3, the installation cavity 5 is communicated with the storage cavity 4, a backflow cavity 6 is defined between the left side and the right side of the drawer seat 2 and the drawer body 3, and the installation cavity 5 and the storage cavity 4 are respectively communicated with the backflow cavity 6; the modified atmosphere membrane module is arranged in the installation cavity 5 and comprises at least one layer of modified atmosphere membrane 7 and an air pump 8, the air pump 8 is arranged in the low-temperature storage space, and an air suction port 9 of the air pump 8 is communicated with the modified atmosphere membrane module; under the suction of the air suction pump 8, the air in the storage cavity 4 is subjected to oxygen removal filtration through the modified atmosphere membrane 7 in the installation cavity 5, and then flows back to the storage cavity 4 through the backflow cavity 6.

Refrigerator based on above-mentioned technical characteristics, drawer body 3 storing chamber 4 is used for storing food under the suction of aspiration pump 8, air in the storing chamber 4 gets into in the installation cavity 5, the volume that modified atmosphere membrane 7 allowed oxygen in the air to pass through is greater than nitrogen to but at least some nitrogen in the separation air, utilize air pump 8 takes out the poor nitrogen gas of oxygen boosting, and the separation is in gas in the installation cavity 5 is rich nitrogen, the rethread the backward flow chamber 6 flows back to storing chamber 4, makes the air in the drawer seat 2 carries out the deoxidization through the mode of circulation flow and filters, has improved gas conditioning efficiency greatly, reduces the intensity of aerobic respiration, thereby reaches the long-term fresh-keeping purpose of fruit vegetables.

In this embodiment, as shown in fig. 1 and fig. 2, the front ends of the left side plate and the right side plate of the drawer body 3 are provided with the first vent 12 for communicating the storage chamber 4 with the backflow chamber 6, after the air passes through the filtration and adjustment of the controlled atmosphere module, the air flows from the installation chamber 5 to the backflow chamber 6 on both sides of the drawer seat 2, and finally flows back to the storage chamber 4 from the backflow chamber 6, so as to form two gas circulation flow loops, thereby further improving the gas adjustment efficiency, and the gas flows from the front side to the rear side of the storage chamber 4, covering the whole storage chamber 4, ensuring that the atmosphere rich in nitrogen and poor in oxygen can fully act on fruits and vegetables stored in the storage chamber 4, and effectively inhibiting the aerobic respiration and metabolic reactions.

As another equivalent embodiment, the backflow cavity 6 may also be separately disposed on the left side or the right side of the drawer base 2, and only one gas circulation flow circuit is used to realize gas conditioning, so as to save internal space.

In the present embodiment, as shown in fig. 1 to 4, the modified atmosphere module includes an installation frame 13 and two modified atmosphere modules 7, and the installation frame 13 is connected to the drawer base 2; two the modified atmosphere membrane 7 connect respectively in the preceding, the back both sides of installing frame 13, two modified atmosphere membrane 7 with it holds the chamber 14 to inject into oxygen-enriched gas between the installing frame 13, aspiration pump 8's induction port 9 communicate in oxygen-enriched gas holds the chamber 14, the installing frame 13 has been seted up and has been led to oxygen-enriched gas holds the gas outlet 15 of chamber 14, aspiration pump 8's induction port 9 through pipeline 10 with gas outlet 15 is connected under the guide of induction port 9, the air in the installing chamber 5 sees through both sides modified atmosphere membrane 7, and oxygen-enriched gas gets into oxygen-enriched gas holds the chamber 14, through exhaust port 11 of aspiration pump 8 discharges the outside of drawer seat 2 realizes the deoxidization filter effect, separation nitrogen-enriched gas and makes it flow back from backward flow chamber 6 in the storing chamber 4. The outer contour of the mounting frame 13 is preferably rectangular, and it can be understood that the mounting frame 13 may also be circular, triangular, or other geometric shapes, which is not limited herein.

Furthermore, a plurality of partition plates 16 are arranged in the mounting frame 13, the partition plates 16 are arranged in a cross mode, so that the oxygen-enriched gas containing cavity 14 is divided into a plurality of rectangular cavities 17, the partition plates 16 are provided with through holes 18 communicated with two adjacent cavities 17, and the partition plates 16 support the mounting frame 13, so that the stability of the oxygen-enriched gas containing cavity 14 is guaranteed.

Further, the outside of air-conditioned membrane 7 all is equipped with backup pad 19, two that are the fretwork form backup pad 19 looks lock joint, in order to realize will air-conditioned membrane 7 fixed mounting be in on the installing frame 13, guarantee air-conditioned membrane 7's deoxidization efficiency to it is right to avoid the power that gas flow produced to lead to the fact the deformation influence to air-conditioned membrane 7, the area of backup pad 19 is greater than the area of installing frame 13, the border all around of backup pad 19 is equipped with buckling parts 20 and buckling grooves 21, each buckling parts 20 with buckling grooves 21 sets up alternately, one of them buckling parts 20 of backup pad 19 and another buckling grooves 21 of backup pad 19 lock joint, easy dismounting.

In this embodiment, the number of the controlled atmosphere membrane modules is two, the two controlled atmosphere membrane modules are respectively arranged on the left side and the right side of the installation cavity 5, the two oxygen-enriched gas accommodating cavities 14 are communicated through a connecting pipe 22, that is, the two gas outlets 15 are connected through the connecting pipe 22, the gas suction port 9 of the air suction pump 8 is communicated with the connecting pipe 22 so as to adapt to two gas circulation flow loops, each gas circulation flow loop can work independently, when one of the gas circulation flow loops fails to work, leaks gas or is blocked in a channel, the other gas circulation flow loop can continue to regulate gas, and therefore, the controlled atmosphere membrane module has better stability.

Wherein, aspiration pump 8 passes through connecting pipe 22 is simultaneously with two oxygen-enriched gas holds the oxygen-enriched gas in the chamber 14 and discharges, in order to reduce aspiration pump 8 sets up quantity, aspiration pump 8 is the vacuum pump, aspiration pump 8 can the direct mount the outside back of air cavity need not to install in positions such as press storehouse, foaming layer, 1 top of box, avoids appearing the heat dissipation difficulty, with compressor resonance, pipeline overlength, influence refrigeration scheduling problem, realizes aspiration pump 8 with the compact installation between the air regulation membrane 7 has the advantages such as reduce pipeline length, aspiration pump 8 does not exist overheated, the effectual isolation of noise after closing the door, be convenient for the installation change.

In this embodiment, a fixing plate 23 is further included, the fixing plate 23 is connected with the drawer base 2, so as to divide the installation cavity 5 into a front cavity and a rear cavity, the fixing plate 23 is provided with a second vent 24 communicating the front cavity and the rear cavity, the rear side surface of the fixed plate 23 is provided with a fixed part 25 for installing the modified atmosphere module, the second vent 24 is arranged in the middle of the fixed plate 23, two sides of the fixed plate 23 are provided with notches 26 or hole sites for communicating the rear cavity with the reflux cavity 6, so as to realize that the nitrogen-rich gas flows to the reflux cavity 6, the fixing pieces 25 are connected with four corners of the modified atmosphere module, the modified atmosphere module is fixed in the rear cavity, the pollution caused by the contact with the articles in the storage cavity 4 is avoided, such as some vegetable leaves, soil, water drops or plastic films, etc., and prolongs the service life of the modified atmosphere film 7.

In this embodiment, a third vent 27 is disposed in the middle of the rear side plate of the drawer body 3, and an air guiding ring 28 is disposed between the second vent 24 and the third vent 27, so that air in the storage cavity 4 directly enters the rear cavity through the air guiding ring 28, thereby ensuring the gas regulation efficiency, when the drawer body 3 is completely closed, the air guiding ring 28 abuts against the rear side plate of the drawer body 3 to form an airflow channel, and a silica gel pad with a damping effect is disposed at a contact position between the air guiding ring 28 and the rear side plate of the drawer body 3, thereby achieving noise reduction and protection effects. Wherein the first vent 12, the second vent 24 and the third vent 27 are all a plurality of small holes distributed in an array.

In this embodiment, two fans 29 are disposed on the rear side of the fixing plate 23, the air inlets of the fans 29 are communicated with the second air vents 24, the air outlets of the fans 29 are disposed toward the modified atmosphere module, a connecting column 30 for mounting the fans 29 is disposed on the rear side of the fixing plate 23, and the two fans 29 are disposed at upper and lower positions, that is, one fan 29 guides air to the surface of the modified atmosphere membrane 7 on the left side of the modified atmosphere module, and the other fan 29 guides air to the surface of the modified atmosphere membrane 7 on the right side of the modified atmosphere module, so as to accelerate the flow speed and guide air to flow to the two air circulation flow loops respectively.

In the present embodiment, the flow path of each gas circulation flow loop is: the storage chamber 4 → the third air vent 27 → the air guide ring 28 → the second air vent 24 → the fan 29 → the air-adjusting film 7 → the return chamber 6 → the first air vent 12 → the storage chamber 4. The working principle is as follows: the fan 29 will the inside air in storing chamber 4 blows to the membrane 7 surface of adjusting the atmosphere, aspiration pump 8 sucks for the air passes through the membrane 7 of adjusting the atmosphere, and at this moment, oxygen sees through more for nitrogen gas the membrane 7 of adjusting the atmosphere, thereby reduces gradually the oxygen concentration in the installation cavity 5 passes through at last the backward flow chamber 6 gets back to in the storing chamber 4, form the fresh-keeping space of hypoxemia, restrain the respiration and the metabolic reaction of depositing the fruit vegetables in the drawer body 3 reach the purpose of extension fresh-keeping time.

In this embodiment, as shown in fig. 5, the front end of drawer body 3 be equipped with the front end opening matched with sealing washer 31 of drawer seat 2 realizes the sealed effect of drawer seat 2 works as moreover after oxygen-enriched gas is taken out in the continuous outside of aspiration pump 8, can produce the negative pressure phenomenon in the drawer seat 2, when the negative pressure reaches certain degree, sealing washer 31 allows the outside gas to get into in the drawer seat 2, reach the effect with outside air interval intercommunication, guarantee to acquire rich nitrogen poor oxygen gas in order to do benefit to the fresh-keeping gas atmosphere of fruit vegetables, reduce the content of oxygen in the fruit vegetables storage space, reduce the aerobic respiration's of fruit vegetables intensity, guarantee the basic respiration of fruit vegetables simultaneously, prevent that fruit vegetables from carrying out anaerobic respiration.

In this embodiment, as shown in fig. 2 and 6, a cooling air duct communicated with the cooling air port is formed in the top wall of the drawer base 2, so that indirect cooling in the storage cavity 4 is realized, specifically, the top wall of the drawer base 2 is provided with a U-shaped groove 32, an air duct cover plate 33 is arranged on the U-shaped groove 32 through a hook and a fixing screw so as to form the cooling air duct, air is supplied to one end of the cooling air duct, air is discharged from the other end of the cooling air duct, the cooling air duct is in a U shape, the cooling area can be increased, the cooling efficiency is ensured, and the air duct cover plate 33 can be embedded in the top wall of the drawer base 2, and cannot affect the installation space in the vertical. The modified atmosphere membrane module is arranged at the rear end of the drawer base 2, so that the top end of the drawer base 2 can be provided with a cooling air duct for indirect cooling. As shown in fig. 7, this drawer assembly can set up at refrigerator walk-in lower floor's position, have the refrigeration wind gap at the back of walk-in with the cooling air duct corresponds and is connected, because this drawer assembly leakproofness is high, adopts indirect cooling mode to cool down, can prevent effectively that cold wind from directly blowing the withered air-drying of fruit vegetables that leads to, keeps crisp tender taste and the texture of fruit vegetables, the oxygen concentration in the drawer body 3 is lower than cold-stored environment, can restrain the respiration and the metabolism of fruit vegetables, reduces the emergence of oxidation brown stain, prevents that nutrition loss and food are rotten. Thereby achieving the purpose of prolonging the preservation period of stored food. In addition, the low-temperature environment formed by the cooling air duct has a protective effect on the air pump 8, so that the efficient operation of the air pump 8 is facilitated, and the service life is prolonged.

In this embodiment, as shown in fig. 1, fig. 2 and fig. 5, a guiding structure 34 is disposed between the drawer body 3 and the drawer base 2, the guiding structure 34 is located at the left and right sides of the drawer body 3 to achieve the drawing function of the drawer body 3, and the guiding structure 34 may be disposed in the backflow cavity 6; and the drawer body 3 with be equipped with the locking structure 35 of fixed joint between the drawer seat 2, realize drawer body 3 with drawer seat 2 looks lock joint drawer body 3 closes the back, and the straining is in on the drawer seat 2 to keep relative sealed state.

To sum up, the embodiment of the invention provides a refrigerator having the following advantages: (1) the air-conditioning membrane assembly is arranged at the rear end of the drawer body 3, so that the oxygen removal effect on the interior of the drawer base 2 is ensured, and meanwhile, the occupied space of the drawer base 2 in the vertical direction is effectively reduced, the overall structure is more compact and reliable, and the system is favorable for being quickly maintained and replaced; (2) the air conditioning efficiency is high, the formed gas flow direction covers the whole storage cavity 4 from front to back, the atmosphere of the nitrogen-rich oxygen-poor gas can be ensured to fully act on fruits and vegetables stored in the storage cavity 4, the heat transfer effect is also realized, the uniformity of the temperature in the storage cavity 4 is ensured, and the refrigeration effect is improved; (3) the stability is high, two gas circulation flow loops which can work independently are formed, and when one gas circulation flow loop fails, the other gas circulation flow loop can still meet the requirement of modified atmosphere preservation; (4) the service life is long, the fixed plate 23 is used for separating the modified atmosphere module from the drawer body 3, the fan 29 is used for realizing gas circulation through the second vent 24 and the third vent 27, the modified atmosphere module is protected from being polluted, and the service life is prolonged.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A refrigerator, characterized by comprising:

a case for forming a low-temperature storage space;

2. The refrigerator as claimed in claim 1, wherein a first vent for communicating the storage chamber with the backflow chamber is provided at a front end of the left and/or right side plate of the drawer body.

3. The refrigerator of claim 1, wherein the modified atmosphere assembly comprises:

the mounting frame is connected with the drawer seat; and

4. The refrigerator as claimed in claim 3, wherein a plurality of partitions are provided in the mounting frame, the partitions are disposed to cross each other to partition the oxygen-enriched gas accommodating chamber into a plurality of cavities, and the partitions are provided with through holes for communicating two adjacent cavities.

5. The refrigerator of claim 3, wherein the outer sides of the air-adjusting films are provided with hollowed-out support plates, and the two support plates are fastened with each other.

6. The refrigerator as claimed in claim 3, wherein the number of the air-conditioning membrane assemblies is two, the two air-conditioning membrane assemblies are respectively arranged at the left side and the right side of the installation cavity, the two oxygen-enriched gas accommodating cavities are communicated through a connecting pipe, and the air suction port of the air suction pump is communicated with the connecting pipe.

7. The refrigerator of claim 3, further comprising

8. The refrigerator as claimed in claim 7, wherein a third vent is formed at a rear side plate of the drawer body, and a wind guide ring is formed between the second vent and the third vent.

9. The refrigerator as claimed in claim 7, wherein a fan is disposed on a rear side of the fixing plate, an air inlet of the fan is communicated with the second air outlet, and an air outlet of the fan is disposed toward the air-conditioning film assembly.

10. The refrigerator as claimed in any one of claims 1 to 9, wherein the front end of the drawer body is provided with a packing which is fitted to the front end opening of the drawer base.

11. The refrigerator as claimed in any one of claims 1 to 9, wherein a cooling air duct is opened on a top wall of the drawer base.