CN220771497U - Refrigerator with a refrigerator body - Google Patents

Abstract

The utility model relates to a refrigerator, which comprises a refrigerator body and a door body connected with the refrigerator body. The refrigerator further includes: the fresh-keeping device is defined with a fresh-keeping space therein and is configured to controllably form a low-oxygen environment with oxygen content lower than that of air in the fresh-keeping space. The door body is provided with a containing cavity which is opened towards the outer side of the door body, the containing cavity is communicated with the space at the inner side of the door body, and the fresh-keeping device is arranged in the containing cavity; the outer side of the door body is also provided with a door-in-door which is movably connected with the door body, and the door-in-door is provided with an opening state of an open accommodating cavity and a closing state of a closed accommodating cavity. When a user needs to take and put articles to the fresh-keeping device, the user only needs to open the door open accommodating cavity in the door, so that the number of times of opening the door body is reduced, and the aim of taking and putting articles to the fresh-keeping device on the premise of not opening the refrigerator door body is fulfilled. When a user does not need to take and put articles to the fresh-keeping device, the door in the door is always in a closed state, so that the refrigerating effect of the fresh-keeping device is ensured.

Description

Refrigerator with a refrigerator body

Technical Field

The utility model relates to a refrigeration technology, in particular to a refrigerator.

Background

The mildew of food is mainly caused by microbial activity, the survival of most mould and saccharomycetes depends on oxygen and proper temperature, and the main means for preserving food materials at present are mainly to reduce the oxygen content and the temperature. The specific method is vacuum fresh-keeping and inert gas aiming at the direction of low-oxygen environment, and aims to change the components of the environmental gas on the premise of not changing the storage space so as to achieve the purpose of fresh-keeping.

In order to achieve the aim of preservation, in the prior art, an independent preservation chamber is arranged in a refrigerator body, or an independent preservation drawer is arranged in the refrigerator body, or an independent preservation box is arranged in a door liner, and the like. However, in the above technical scheme, the user needs to open the refrigerator door body to take and put the articles, the refrigerator door is opened frequently, the cold loss is serious, and condensation or frost is easily formed in the refrigerator.

Disclosure of Invention

An object of the present utility model is to overcome at least one of the drawbacks of the prior art, and to provide a refrigerator for taking and placing articles of a fresh-keeping apparatus without opening a refrigerator door, and for ensuring a refrigerating effect in the fresh-keeping apparatus.

It is a further object of the present utility model to effectively reduce the oxygen content in the fresh keeping device and to extend the fresh keeping storage period of the food material by means of a pressure differential which is hardly present.

In order to achieve the above object, the present utility model provides a refrigerator including a cabinet, and a door connected to the cabinet, the refrigerator further including:

a preservation device defining a preservation space therein for storing items, the preservation device configured to controllably create a hypoxic environment within the preservation space having an oxygen content that is lower than the oxygen content of air; wherein the method comprises the steps of

The door body is provided with a containing cavity which is opened towards the outer side of the door body, the containing cavity is communicated with the space at the inner side of the door body, and the fresh-keeping device is arranged in the containing cavity; and is also provided with

The outer side of the door body is also provided with a door-in-door which is movably connected with the door body, and the door-in-door is provided with an opening state for opening the accommodating cavity and a closing state for closing the accommodating cavity.

Optionally, the door body has an open state of opening the storage space in the box body and a closed state of closing the storage space in the box body;

an air inlet communicated with the top or the upper part of the accommodating cavity and an air outlet communicated with the bottom or the lower part of the accommodating cavity are formed in the inner side of the door body; and is also provided with

When the door body is in the closed state, the accommodating cavity is communicated with the storage space through the air inlet and the air outlet, so that air in the storage space is allowed to flow through the air inlet into the accommodating cavity and flow out of the accommodating cavity through the air outlet.

Optionally, a damper assembly is disposed at the air inlet, and is configured to controllably open and close the air inlet and adjust the flow area of the air inlet.

Optionally, a cover plate is further arranged on the inner side of the door body, the cover plate is covered on the top wall of the cavity of the accommodating cavity, and a concave cavity which is downwards opened and upwards recessed is defined in the cover plate;

the air inlet comprises a first sub air inlet formed in the rear peripheral wall, facing the rear side of the door body, of the cover plate and a second sub air inlet formed in the top wall of the cavity of the accommodating cavity, and the first sub air inlet is communicated with the second sub air inlet through the concave cavity; and is also provided with

The air door assembly is used for controllably opening and closing the first sub air inlet and adjusting the overflow area of the first sub air inlet.

Optionally, the damper assembly is disposed in the cavity, and has a damper plate pivotally connected to the cover plate, and the damper plate opens and closes the first sub-air inlet on an inner side of the first sub-air inlet facing the cavity; and is also provided with

An elastic buffer piece positioned around the first sub air inlet is arranged on the inner side of the backward peripheral wall of the cover plate, which faces the concave cavity, so that the air door plate is elastically propped against the elastic buffer piece when the air door plate closes the first sub air inlet.

Optionally, the preservation device is configured to create a hypoxic environment within the preservation space in such a way that there is no pressure differential between the preservation space and an external space of the preservation device.

Optionally, the fresh-keeping device comprises:

the fresh-keeping box is internally limited with the fresh-keeping space;

an oxygen-enriched membrane assembly having at least one oxygen-enriched membrane configured such that oxygen in air on a first side thereof is more permeable through the oxygen-enriched membrane to a second side of the oxygen-enriched membrane relative to nitrogen therein; the first side of the oxygen-enriched film is communicated with the fresh-keeping space; and

the air extracting device is communicated with the space where the second side of the oxygen-enriched film is positioned so as to controllably extract the gas in the space where the second side of the oxygen-enriched film is positioned, so that negative pressure is formed in the fresh-keeping space; wherein the method comprises the steps of

The preservation box is provided with a pressure balance hole which is communicated with the preservation space and the outer space of the preservation box, so that air in the outer space of the preservation box enters the preservation space through the pressure balance hole when negative pressure is formed in the preservation space.

Optionally, the preservation box comprises a box body and a cover body covered on the box body, the preservation space is formed in the box body, and the pressure balance hole is formed in the cover body.

Optionally, the cover body comprises an inner layer cover and an outer layer cover covering the outer side of the inner layer cover, and the pressure balance hole comprises an inner layer hole penetrating through the inner layer cover along the thickness direction of the inner layer cover and an outer layer hole penetrating through the outer layer cover along the thickness direction of the outer layer cover; and is also provided with

The inner layer cover and the outer layer cover are arranged at intervals to form a pressure buffering space, and the inner layer holes are communicated with the outer layer holes through the pressure buffering space.

Optionally, the oxygen-enriched film component is arranged inside the preservation box, and the air extracting device is arranged outside the preservation box; and is also provided with

And the fresh-keeping box is also provided with an air suction hole, so that the air suction device sucks the gas in the space where the second side of the oxygen-enriched membrane is positioned through the air suction hole.

Optionally, a buffer space is further defined in the fresh-keeping box, and the buffer space is communicated with the fresh-keeping space;

the oxygen-enriched membrane component is arranged in the buffer space, so that the first side of the oxygen-enriched membrane is indirectly communicated with the fresh-keeping space through the buffer space.

Optionally, the oxygen-enriched membrane assembly further comprises an oxygen-enriched gas collection cavity which is positioned on the second side of the at least one oxygen-enriched membrane and is sealed, and the air extracting device is communicated with the oxygen-enriched gas collection cavity through an air extracting pipeline;

the oxygen-enriched film component extends upwards from a first side of the preservation box to a second side of the preservation box in a tilting way, and the first side of the preservation box is opposite to the second side of the preservation box; and is also provided with

The oxygen-enriched film component is arranged at the second side of the preservation box at intervals with the preservation box, and the air exhaust pipeline is communicated with the oxygen-enriched gas collection cavity at the end part of the oxygen-enriched film component adjacent to the second side of the preservation box.

The refrigerator comprises a refrigerator body, a door body and a fresh-keeping device. Particularly, the door body is provided with an accommodating cavity which is opened outwards and is communicated with the space inside the door body. When the door body is in a closed state, the inner space of the box body is positioned at the inner side of the door body, and the accommodating cavity is communicated with the inner space of the box body, so that the air flow with lower temperature in the box body can flow to the accommodating cavity, the temperature in the accommodating cavity and the temperature in the fresh-keeping device arranged in the accommodating cavity can be kept at lower levels, the low-temperature storage of food materials in the fresh-keeping device is ensured, and the fresh-keeping of the food materials in the fresh-keeping device is facilitated.

And the outer side of the door body is provided with a door-in-door which can open or close the accommodating cavity. When a user needs to take and put articles to the fresh-keeping device, the user can only open the door open accommodating cavity in the door, the whole door body keeps a closed state, the times of opening the door body are effectively reduced, the possibility of large loss of cold in the box body is reduced, and the aim of taking and putting articles to the fresh-keeping device under the premise of not opening the refrigerator door body is fulfilled. When a user does not need to take and put articles to the preservation device, the door in the door is always in a closed state, so that the cold in the accommodating cavity is prevented from being transmitted outwards to a certain extent, and the refrigerating effect of the preservation device in the accommodating cavity is ensured.

Further, the fresh-keeping device forms a low-oxygen environment in the fresh-keeping space by means of ensuring that no pressure difference exists between the fresh-keeping space inside the fresh-keeping device and the external space of the fresh-keeping device, namely, in the process that the fresh-keeping space forms the low-oxygen environment, the pressure between the fresh-keeping space and the external space of the fresh-keeping device is always in a dynamic balance state, and after the low-oxygen environment is formed in the fresh-keeping space, no pressure difference exists between the fresh-keeping space and the external space of the fresh-keeping device, so that airflow hardly exists between the fresh-keeping space and the external space, the low-oxygen state can be kept in the fresh-keeping space for a long time, the food in the fresh-keeping space is preserved for a long time, the fresh-keeping period is prolonged, and the risks of internal and external taste of the fresh-keeping device are effectively reduced.

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

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

fig. 1 is a schematic structural view of a refrigerator according to an embodiment of the present utility model;

fig. 2 and 3 are schematic block diagrams of a refrigerator door according to an embodiment of the present utility model in different orientations, respectively;

fig. 4 is a schematic structural exploded view of a refrigerator door according to an embodiment of the present utility model;

FIG. 5 is a schematic block diagram of a cover plate and damper assembly according to one embodiment of the present utility model;

fig. 6 is a schematic structural view of a fresh-keeping apparatus for a refrigerator according to an embodiment of the present utility model;

fig. 7 is a schematic cross-sectional view of a fresh-keeping apparatus for a refrigerator according to an embodiment of the present utility model;

fig. 8 is a schematic structural exploded view of a fresh-keeping apparatus for a refrigerator according to an embodiment of the present utility model in a sectional state;

FIG. 9 is a schematic cross-sectional view of an oxygen-enriched membrane assembly in accordance with one embodiment of the utility model;

fig. 10 is a schematic cross-sectional view of a cover according to one embodiment of the utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Hereinafter, a specific structure of the refrigerator will be mainly described. It should be noted that, in order to avoid repeating the description of the same feature multiple times, the features in the following embodiments may be applied to and organically combined with other embodiments, and it should be understood that the description has provided an embodiment in which the feature is applied to other embodiments.

The present utility model provides a refrigerator, and fig. 1 is a schematic block diagram of a refrigerator according to an embodiment of the present utility model, and referring to fig. 1, a refrigerator 1 of the present utility model may generally include a cabinet 20 and a door 30 connected to the cabinet 20.

Fig. 2 and 3 are schematic structural views of a refrigerator door according to an embodiment of the present utility model in different orientations, respectively, and fig. 4 is a schematic structural exploded view of the refrigerator door according to an embodiment of the present utility model. In particular, the refrigerator 1 further comprises a fresh-keeping device 10. The fresh-keeping apparatus 10 defines a fresh-keeping space 111 (see later figures) therein for storing the articles, and the fresh-keeping apparatus 10 is configured to controllably form a low-oxygen environment having an oxygen content lower than that of air in the fresh-keeping space 111. The low-oxygen storage environment is favorable for preserving the food materials, and can prolong the storage time of the food materials and improve the storage quality of the food materials.

Further, the door body 30 is provided with a containing cavity 31 which is opened towards the outer side of the door body 30, the containing cavity 31 is communicated with the space at the inner side of the door body 30, and the fresh-keeping device 10 is arranged in the containing cavity 31. The door body 30 is further provided at an outer side thereof with a door-in-door 40 movably connected to the door body 30, the door-in-door 40 having an opened state of opening the accommodating chamber 31 and a closed state of closing the accommodating chamber 31.

The refrigerator 1 of the present utility model includes a cabinet 20, a door 30, and a fresh-keeping apparatus 10. In particular, the door body 30 is provided with an accommodating cavity 31 which is opened outwards, and the accommodating cavity 31 is communicated with the space inside the door body 30. When the door 30 is in the closed state, the inner space of the box 20 is located at the inner side of the door 30, and the accommodating cavity 31 is communicated with the inner space of the box 20, so that the air flow with low temperature in the box 20 can flow to the accommodating cavity 31, and the temperature in the accommodating cavity 31 and the temperature in the fresh-keeping device 10 arranged in the accommodating cavity 31 can be kept at low level, thereby ensuring low-temperature storage of food in the fresh-keeping device 10 and being beneficial to fresh keeping of food in the fresh-keeping device 10.

And, a door-in-door 40 is provided at an outer side of the door body 30, and the door-in-door 40 can open or close the accommodating chamber 31. When a user needs to take and put articles into the fresh-keeping device 10, the user can only open the door 40 in the door to open the accommodating cavity 31, and the whole door body 30 is kept in a closed state, so that the opening times of the door body 30 are effectively reduced, the possibility of great loss of cold in the box body 20 is reduced, and the aim of taking and putting articles into the fresh-keeping device 10 is fulfilled on the premise that the refrigerator door body is not opened. When the user does not need to take and put articles into the preservation device 10, the door 40 in the door is always in a closed state, so that the outward transmission of the cold in the accommodating cavity 31 is prevented to a certain extent, and the refrigerating effect of the preservation device 10 in the accommodating cavity 31 is ensured.

In some embodiments, the door 30 has an open state that opens the storage space within the case 20, and a closed state that closes the storage space within the case 20. An air inlet 32 communicated with the top or upper part of the accommodating cavity 31 and an air outlet 33 communicated with the bottom or lower part of the accommodating cavity 31 are formed on the inner side of the door body 30. When the door 30 is in its closed state, the accommodating cavity 31 is communicated with the storage space in the box 20 through the air inlet 32 and the air outlet 33, so as to allow the air flow in the storage space to enter the accommodating cavity 31 through the air inlet 32 and flow out of the accommodating cavity 31 through the air outlet 33, thereby effectively utilizing the cooling capacity in the storage space of the box 20 to cool the accommodating cavity 31 and ensuring that the temperature of the fresh-keeping device 10 accommodated in the accommodating cavity 31 is at a lower level. Meanwhile, when condensation is generated in the accommodating cavity 31, water vapor in the accommodating cavity 31 can be taken away through wind circulation, so that the accommodating cavity 31 is kept dry.

The air inlet 32 is arranged at a position communicated with the top or the upper part of the accommodating cavity 31, and the air outlet 33 is arranged at a position communicated with the bottom or the lower part of the accommodating cavity 31, so that the cold entering the accommodating cavity 31 is naturally sunk, and the fresh-keeping device 10 is uniformly refrigerated.

In some embodiments, a damper assembly 50 is provided at the air intake 32, the damper assembly 50 being configured to controllably open and close the air intake 32 and to regulate the flow area of the air intake 32.

Specifically, when the temperature within the receiving chamber 31 is high, the damper assembly 50 may be controlled to open the air inlet 32 to allow the cooling air flow within the case 20 to enter the receiving chamber 31, thereby reducing the temperature within the receiving chamber 31. The higher the temperature in the accommodating chamber 31, the greater the opening degree of the air inlet 32, i.e., the greater the flow area of the air inlet 32. When the temperature in the accommodating cavity 31 is reduced to a preset value, the air door assembly 50 can be controlled to close the air inlet 32 to prevent the cooling air flow from continuously entering the accommodating cavity 31, so as to prevent the food materials in the fresh-keeping device 10 from being frozen due to too low temperature in the accommodating cavity 31.

In some embodiments, the door 30 is further provided with a cover plate 60 on the inner side, the cover plate 60 is disposed on the top wall 311 of the accommodating chamber 31, and referring to the schematic structural view of the cover plate and the damper assembly according to one embodiment of the present utility model shown in fig. 5, the cover plate 60 is defined with a cavity 61 that is downwardly opened and upwardly recessed inside. The air inlet 32 comprises a first sub air inlet 321 formed on a rear peripheral wall 62 of the cover plate 60 facing the rear side of the door body 30, and a second sub air inlet 322 formed on a cavity top wall 311 of the accommodating cavity 31, wherein the first sub air inlet 321 is communicated with the second sub air inlet 322 through a concave cavity 61. Therefore, the cooling air flow in the case 20 can sequentially enter the accommodating cavity 31 through the first sub-air inlet 321, the cavity 61 and the second sub-air inlet 322.

Further, the damper assembly 50 is configured to controllably open and close the first sub-air inlet 321, and adjust the flow area of the first sub-air inlet 321. Therefore, the air door assembly 50 does not occupy the space of the accommodating cavity 31, so that any adverse effect is not caused on the taking and placing of the fresh-keeping device 10 and the food in the fresh-keeping device 10.

According to the utility model, the cover plate 60 is arranged above the accommodating cavity 31, so that the air door assembly 50 is conveniently arranged on the cover plate 60, and the concave cavity 61 can be formed in the cover plate 60, and the concave cavity 61 can buffer the air flow from the box body 20, so that the cooling air flow is prevented from directly blowing to a partial area in the accommodating cavity 31, the refrigerating uniformity of the accommodating cavity 31 is improved, and the possibility of condensation in the accommodating cavity 31 is effectively reduced.

Specifically, the first sub-air inlet 321 may be a strip-shaped air inlet extending along the width direction of the door 30. The second sub-air inlet 322 may include a plurality of strip-shaped air inlets extending in the width direction of the door 30 or extending in the thickness direction of the door 30.

Further, a plurality of bottle seats 70 are arranged at intervals along the height direction of the door body 30, and one bottle seat 70 is adjacently arranged above the cover plate 60. The bottle holder 70 may be integrally formed with the cover plate 60 in appearance.

In some embodiments, the damper assembly 50 is disposed in the pocket 61 and has a damper plate 51 pivotally connected to the cover plate 60, the damper plate 51 opening and closing the first sub-air intake 321 inside the first sub-air intake 321 toward the pocket 61.

The air door assembly 50 is arranged in the concave cavity 61 and hidden in the cover plate 60, so that the effect on the article taking and placing operation in the accommodating cavity 31 and the effect on the article taking and placing operation in the door body 30 are avoided, and interference with other structures is avoided.

Further, an elastic buffer 63 is disposed on the inner side of the rear peripheral wall 62 of the cover plate 60 facing the cavity 61 and around the first sub-air inlet 321, so as to elastically abut against the elastic buffer 63 when the damper plate 51 closes the first sub-air inlet 321.

The elastic buffer 63 can buffer the interaction force between the air door plate 51 and the rear circumferential wall of the cover plate 60, so as to avoid loud noise generated when the air door plate 51 is closed.

In some embodiments, the damper assembly 50 may further include a motor 52 for generating a driving force, a gear 53 drivingly connected to the motor 52, the gear 53 being connected to the damper plate 51 to rotate the damper plate 51.

Specifically, the motor 52 may be fixed to the top wall or the peripheral wall of the cover plate 60 by a fixing member 54, and the gear 53 is rotatably supported on the top wall or the peripheral wall of the cover plate 60. To reduce vibrations, a buffer may also be provided between the mount 54 and the motor 53.

Specifically, a partition plate 64 may be disposed in the cavity 61 to divide the internal space of the cavity 61 into two parts, one part for communicating the first sub-air inlet 321 and the second sub-air inlet 322, and the other part for accommodating the motor 52, the gear 53, and the like.

In some embodiments, the preservation apparatus 10 is configured to create a hypoxic environment within the preservation space 111 in a manner such that there is no pressure differential between the preservation space 111 and the exterior space of the preservation apparatus 10. That is, the pressure between the fresh-keeping space 111 and the external space of the fresh-keeping apparatus 10 is always in a dynamic balance state in the process of forming the low-oxygen environment in the fresh-keeping space 111. After the low-oxygen environment is formed in the fresh-keeping space 111, there is almost no pressure difference between the fresh-keeping space and the external space of the fresh-keeping device, so that there is almost no airflow between the fresh-keeping space 111 and the external space, and the low-oxygen state can be kept in the fresh-keeping space 111 for a long time, which is beneficial to the long-time fresh-keeping of the food in the fresh-keeping space 111, prolongs the fresh-keeping period, and effectively reduces the risk of the internal and external taste of the fresh-keeping device 10.

Fig. 6 is a schematic structural view of a fresh-keeping apparatus for a refrigerator according to an embodiment of the present utility model, fig. 7 is a schematic sectional view of the fresh-keeping apparatus for a refrigerator according to an embodiment of the present utility model, and fig. 8 is a schematic structural exploded view of the fresh-keeping apparatus for a refrigerator according to an embodiment of the present utility model in a sectional state. In some embodiments, the preservation apparatus 10 includes a preservation box 11, an oxygen-enriched membrane assembly 12, and a gas extraction apparatus 13. The air extraction device 13 may be an air extraction pump.

The inside of the fresh box 11 defines a fresh space 111 for storing the articles.

FIG. 9 is a schematic cross-sectional view of an oxygen-enriched membrane assembly in accordance with one embodiment of the utility model. Oxygen-enriched membrane assembly 12 has at least one oxygen-enriched membrane 121, oxygen-enriched membrane 121 being configured such that oxygen in air on a first side thereof is more permeable through oxygen-enriched membrane 121 to a second side of oxygen-enriched membrane 121 relative to nitrogen therein. Wherein a first side of the oxygen-enriched membrane 121 is in communication with the fresh space 111.

Specifically, the oxygen-enriched film 121 may be an oxygen-permeable film that can only allow oxygen and moisture in the air to permeate therethrough, but not allow nitrogen in the air to permeate therethrough. The direction in which oxygen and moisture permeate through oxygen-enriched membrane 121 is unidirectional, and only from the first side of oxygen-enriched membrane 121 to the second side of oxygen-enriched membrane 121 is possible.

The air extracting device 13 is communicated with the space where the second side of the oxygen enrichment membrane 121 is located, so as to controllably extract the air in the space where the second side of the oxygen enrichment membrane 121 is located, and thus negative pressure is formed in the fresh-keeping space 111.

In particular, the fresh-keeping box 11 is provided with a pressure balance hole 112 for communicating the fresh-keeping space 111 with the external space of the fresh-keeping box 11, so that air in the external space of the fresh-keeping box 11 enters the fresh-keeping space 111 through the pressure balance hole 112 when negative pressure is formed in the fresh-keeping space 111.

When the air extractor 13 is started, the air in the space on the second side of the oxygen-enriched film 121 can be extracted, a negative pressure is formed in the space on the second side of the oxygen-enriched film 121, and under the action of the negative pressure, the oxygen in the fresh-keeping space 111 communicated with the first side of the oxygen-enriched film 121 flows into the space on the second side of the oxygen-enriched film 121 through the oxygen-enriched film 121 and is extracted by the air extractor 13. Therefore, a certain negative pressure is formed in the fresh-keeping space 111, and under the action of the negative pressure, air in the external space of the fresh-keeping box 11 can enter the fresh-keeping space 111 through the pressure balance hole 112 so as to quickly balance the pressure in the fresh-keeping space 111, so that the air pressures of the fresh-keeping space 111 and the external space of the fresh-keeping box 11 maintain dynamic balance.

It will be appreciated that a certain unit of oxygen is pumped away from the fresh space 111 by the air pumping device 13 and enters the same unit of air in the fresh space 111 through the pressure balance holes 112. Although the total amount of gas in the fresh space 111 is almost unchanged, the oxygen content in the air is only about 21%, which is far less than the amount of oxygen pumped by the pumping device 13, and thus the oxygen content in the fresh space 111 gradually decreases during the operation of the pumping device 13.

When the air extractor 13 stops operating, on one hand, oxygen in the fresh-keeping space 111 is more extracted and is in a low-oxygen state with lower oxygen content; on the other hand, there is almost no pressure difference between the fresh-keeping space 111 and the external space of the fresh-keeping box 11, so there is almost no airflow between the fresh-keeping space 111 and the external space of the fresh-keeping box 11, and the low-oxygen state can be kept in the fresh-keeping space 111 for a long time, which is beneficial to keeping food in the fresh-keeping space 111 for a long time, prolonging the fresh-keeping period of the food, and effectively reducing the risk of the inner and outer taste of the fresh-keeping device 10.

In addition, in the air extraction process of the fresh-keeping device 10, the fresh-keeping space 111 and the external space are in an airflow circulation state, so that the fresh-keeping device is not required to be completely sealed, and the design requirement on the sealing performance of the fresh-keeping device is reduced. Meanwhile, no negative pressure state is formed in the fresh-keeping space 111, so that no matter how the user takes the food, no safety hidden danger exists, the water loss of the food in the fresh-keeping space 111 is avoided, and the fresh-keeping effect is further improved.

Therefore, the utility model can form a low-oxygen environment in the preservation space 111 by a way that no pressure difference exists by arranging a simple pressure balance hole 112 on the preservation device 10, thereby obtaining the beneficial technical effects and having very ingenious structural conception.

In some embodiments, the number of the pods 11 may be plural; the fresh keeping apparatus 10 further includes a base 15, and a plurality of fresh keeping boxes 11 are commonly supported on the base 15 so as to stably support the plurality of fresh keeping boxes 11 at the same time.

The inventors have realized that the aperture of the pressure balancing holes 112 cannot be too large in order to better achieve the freshness-retaining effect of the freshness-retaining device 10, as long as possible, for the freshness-retaining duration of the freshness-retaining device 10. For example, the aperture of the pressure balance hole 112 is not more than 10mm.

In some embodiments, the fresh-keeping box 10 includes a box body 11a and a cover 118 covering the box body 11a, the fresh-keeping space 111 is formed in the box body 11a, and the pressure balance hole 112 is formed on the cover 118.

Specifically, the case 11a may include an outer case 115, a support structure 116 disposed inside the outer case 115, and an inner case 117 disposed inside the outer case 115 and supported on the support structure 116. The fresh-keeping space 111 is formed inside the inner case 117. The tops of the inner and outer boxes 117, 115 are open to facilitate the user's access to food materials within the fresh space 111.

Fig. 10 is a schematic cross-sectional view of a cover according to one embodiment of the utility model. Further, the cover 118 includes an inner layer cover 1181 and an outer layer cover 1182 covering the outside of the inner layer cover 1181, and the pressure balance hole 112 includes an inner layer hole 1121 penetrating the inner layer cover 1181 in the thickness direction of the inner layer cover 1181 and an outer layer hole 1122 penetrating the outer layer cover 1182 in the thickness direction of the outer layer cover 1182. The inner layer hole 1121 communicates with the outer layer hole 1122.

Further, the inner layer cover 1181 and the outer layer cover 1182 are spaced apart to form a pressure buffering space 1123, and the inner layer hole 1121 communicates with the outer layer hole 1122 through the pressure buffering space 1123. The pressure buffer space 1123 prolongs the flow path of the air in the external space flowing into the fresh-keeping space 111, and after the air extractor 13 stops running, the air in the external space is difficult to exchange with the fresh-keeping space 111, so that the low-oxygen environment in the fresh-keeping space 111 is kept for a longer time, and the fresh-keeping effect is better.

It will be appreciated that there is inevitably a weak air flow exchange between the fresh food compartment 111 and the external space of the fresh food device 10 due to the pressure balance apertures 112. After a sufficiently long time (e.g., several days) is reached, the oxygen content in the fresh space 111 increases. Thus, the air extracting device 13 can periodically start the air extracting operation every preset time period. It should be noted that, because there is no pressure difference between the fresh-keeping space 111 and the external space of the fresh-keeping device 10, the air flow exchange between the two spaces is very weak, so the time length of the two operation intervals of the air extractor 13 of the present utility model is much longer than that of the air extractor in the fresh-keeping mode that the air extractor forms negative pressure in the fresh-keeping space in the prior art.

In some embodiments, the oxygen-enriched film assembly 12 is disposed inside the preservation box 11, so that the first side of the oxygen-enriched film 121 is communicated with the preservation space 111 in the preservation box 11, the communication path between the first side and the preservation space is shortened, and the oxygen extraction efficiency is improved.

Further, the air extracting device 13 is disposed outside the fresh keeping box 11. The air extractor 13 generates certain noise and vibration during operation, therefore, the air extractor 13 is externally arranged, and the air extractor 13 can be flexibly arranged at other proper positions of the refrigerator, such as a compressor bin or a base 15, according to actual conditions, so that the air extractor 13 is prevented from driving the fresh-keeping box 11 to vibrate, and noise felt by a user is reduced.

Further, the fresh-keeping box 11 is further provided with an air pumping hole 113, so that the air pumping device 13 pumps the air in the space where the second side of the oxygen enrichment membrane 121 is located through the air pumping hole 113.

In some embodiments, the interior of the crisper 11 further defines a buffer space 114, the buffer space 114 being in communication with the crisper space 111. Oxygen-enriched membrane assembly 12 is disposed in buffer space 114 such that a first side of oxygen-enriched membrane 121 is in indirect communication with fresh space 111 through buffer space 114.

In the utility model, a buffer space 114 is additionally formed in the fresh keeping box 11, and the oxygen-enriched film component 12 is arranged in the buffer space 114 instead of directly arranging the oxygen-enriched film component 12 in the fresh keeping space 111, so that on one hand, the influence of food materials in the fresh keeping space 111 on the oxygen permeability of the oxygen-enriched film component 12 caused by contacting the oxygen-enriched film component 12 can be avoided, and on the other hand, the food materials can be conveniently taken and placed in the fresh keeping space 111 by a user without being influenced by the oxygen-enriched film component 12.

In some embodiments, oxygen-enriched membrane assembly 12 comprises two oxygen-enriched membranes 121 disposed in parallel and spaced apart relationship. The first sides of the two oxygen-enriched membranes 121 are disposed opposite each other and are both exposed to the buffer space 114. That is, the first sides of both oxygen-enriched membranes 121 are indirectly communicated with the fresh-keeping space 111 through the buffer space 114. The second sides of the two oxygen-enriched membranes 121 are disposed opposite to form an oxygen-enriched gas collection chamber 122 between the two oxygen-enriched membranes 121. The air extracting device 13 is communicated with the oxygen-enriched gas collecting cavity 122 through an air extracting pipeline 14 penetrating through the air extracting hole 113.

When the air extractor 13 operates, the air in the oxygen-enriched gas collecting cavity 122 is extracted through the air extracting pipeline, negative pressure is formed in the oxygen-enriched gas collecting cavity 122, and under the action of the negative pressure, oxygen in the buffer space 114 can flow to the oxygen-enriched gas collecting cavity 122 through the two oxygen-enriched membranes 121 at the same time, which is equivalent to the simultaneous inhalation of oxygen from two sides of the oxygen-enriched membrane assembly 12 to the oxygen-enriched gas collecting cavity 122, so that the oxygen permeation area is enlarged, and the oxygen extraction efficiency is improved.

Further, oxygen-enriched membrane assembly 12 may further comprise a mounting frame for supporting two oxygen-enriched membranes 121, and two oxygen-enriched membranes 121 are supported inside the mounting frame.

Of course, in other embodiments, oxygen-enriched membrane assembly 12 may comprise only one oxygen-enriched membrane 121. In these embodiments, oxygen-enriched membrane assembly 12 further comprises a mounting frame for supporting oxygen-enriched membrane 121, and a plate body for blocking one side opening of the mounting frame. The oxygen-enriched membrane 121 covers the other side opening of the mounting frame. Thus, a relatively closed oxygen-enriched gas collection chamber may also be defined between the oxygen-enriched membrane 121, the mounting frame and the plate body. The air extracting device 13 is communicated with the oxygen-enriched gas collecting cavity through an air extracting pipeline 14 penetrating through an air extracting hole 113.

In some embodiments, oxygen-enriched membrane assembly 12 further comprises an enclosed oxygen-enriched gas collection chamber 122 on a second side of at least one oxygen-enriched membrane 121, and gas withdrawal device 13 is in communication with oxygen-enriched gas collection chamber 122 via gas withdrawal line 14 to facilitate the withdrawal of oxygen within oxygen-enriched gas collection chamber 122.

Further, the oxygen-enriched film assembly 12 extends upward from a first side of the fresh box 11 toward a second side of the fresh box 11, the first side of the fresh box 11 being disposed opposite the second side of the fresh box 11. The oxygen-enriched film assembly 12 is arranged at a distance from the preservation box 11 at the second side of the preservation box 11, and the air extraction pipeline 14 is communicated with the oxygen-enriched gas collecting cavity 122 at the end part of the oxygen-enriched film assembly 12 adjacent to the second side of the preservation box 11.

The oxygen-enriched membrane component 12 is obliquely arranged, so that the length of the oxygen-enriched membrane component 12 can be prolonged in a limited space, the oxygen permeation area of the oxygen-enriched membrane 121 is increased, and the oxygen pumping efficiency is further improved.

In addition, the air extraction pipeline 14 is required to be connected to the oxygen enrichment membrane component 12, after the oxygen enrichment membrane component 12 is obliquely arranged, a certain interval can be formed between the oxygen enrichment membrane component 12 and the fresh-keeping box 11, and the air extraction pipeline 14 is connected to the end part of the oxygen enrichment membrane component 12 adjacent to the second side of the fresh-keeping box 11, so that on the premise of ensuring enough oxygen permeation area, enough space is provided for bending and reversing of the air extraction pipeline 14, the problem that the air extraction pipeline 14 deforms and the overflow area is reduced due to overlarge reversing degree of the air extraction pipeline 14 is avoided, and the smoothness of an air extraction passage is ensured.

Specifically, a mounting support structure for supporting oxygen-enriched membrane assembly 12 may be provided within buffer space 114 to ensure that oxygen-enriched membrane assembly 12 is stably supported within buffer space 114.

In some alternative embodiments, oxygen-enriched membrane assembly 12 may not form an oxygen-enriched gas collection chamber. For example, oxygen-enriched membrane assembly 12 may include at least one oxygen-enriched membrane 121, where oxygen-enriched membrane 121 separates buffer space 114 into two subspaces, one subspace being in communication with fresh-keeping space 111 and the other subspace being in communication with suction device 13. When the air extracting device 13 is operated, oxygen in one of the subspaces communicating with the fresh-keeping space 111 passes through the oxygen-enriched film 121 to enter the other subspace. This structure can also effectively reduce the oxygen content in the fresh space 111.

In some embodiments, the air-pumping hole 113 is formed at the bottom or lower portion of the fresh-keeping box 11, and the pressure-balancing hole 112 is formed at the top or upper portion of the fresh-keeping box 11. A buffer space 114 is formed below the fresh space 111 so as to suck oxygen through the air suction hole 113.

When the extracting device 13 operates, oxygen at the lower part of the fresh-keeping space 111 is extracted, and air in the external space is compensated to the upper part of the fresh-keeping space 111 through the pressure balance hole 112, so that air flow between the upper space and the lower space of the fresh-keeping space 111 is facilitated to be promoted, and the uniformity of air distribution in the fresh-keeping space 111 is improved.

In some embodiments, the crisper 11 comprises a shell 11a, the shell 11a comprising an outer shell 115, a support structure 116 disposed inside the outer shell 115, and an inner shell 117 disposed inside the outer shell 115 and supported on the support structure 116. The fresh space 111 is formed inside the inner case 117, and the buffer space 114 is formed between the support structure 116 and the inner bottom wall 1151 of the outer case 115.

Further, the inner case 117 is clearance-fitted with the outer case 115 to allow gas to flow therebetween, thereby allowing the buffer space 114 and the fresh space 111 to communicate.

By arranging the inner box 117 and the outer box 115 which are nested, the utility model prolongs the airflow flow path between the fresh-keeping space 111 and the air extractor 13, eases the airflow direction from the fresh-keeping space 111 to the air extractor 13, and is beneficial to forming the environment with balanced gas concentration distribution in the fresh-keeping space 111. And, the fresh-keeping space 111 for storing food is formed in the inner case 117, the phenomenon that the food in the fresh-keeping space 111 drops is effectively prevented.

In some embodiments, the support structure 116 includes a support frame 1161 standing on the inner bottom wall of the outer case 115, a plurality of support columns 1162 extending convexly upward from edge portions of the support frame 1161, and a support plate 1163 supported on the plurality of support columns 1162. The inner case 117 is disposed on the support plate 1163, and the buffer space 114 is formed between the support frame 1161 and the inner bottom wall 1151 of the outer case 115.

At least part of the periphery of the supporting plate 1163 forms a gap with the inner peripheral wall of the outer case 115, and the top plate of the supporting frame 1161 is provided with an overflow hole 1164 to allow the fresh-keeping space 111 to communicate with the buffer space 114 through the gap between the inner case 117 and the outer case 115, the gap between the supporting plate 1163 and the inner peripheral wall of the outer case 115, and the overflow hole 1164 in sequence.

The inner box 117 is supported by the support columns 1162 and the support plates 1163, so that the support stability of the inner box 117 is improved. And, still be equipped with supporting frame 1161 below backup pad 1163, further provide reserve support for interior box 117, and shortened the height of support column 1162, improved the structural strength of support column 1162.

In some embodiments, the preservation apparatus 10 further includes a base 15, and the preservation box 11 is supported on the base 15, so as to stably support the preservation box 11.

Further, a through hole 151 is provided on the base 15 for the air suction pipe 14 to pass through.

In the description of the present embodiment, a description referring to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

It should be understood by those skilled in the art that terms such as "upper", "lower", "front", "rear", "top", "bottom", etc. used to indicate directions or positional relationships in the embodiments of the present utility model are based on actual usage states of the indoor units of the cabinet air conditioner, and these terms are merely for convenience in describing and understanding the technical solutions of the present utility model, and are not intended to indicate or imply that the devices referred to or are not necessarily oriented, configured and operated in specific directions, and thus should not be construed as limiting the present utility model.

Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the utility model have been shown and described herein in detail, many other variations or modifications of the utility model consistent with the principles of the utility model may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the utility model. Accordingly, the scope of the present utility model should be understood and deemed to cover all such other variations or modifications.

Claims (12)

1. A refrigerator comprising a cabinet and a door connected to the cabinet, the refrigerator further comprising:

a preservation device defining a preservation space therein for storing items, the preservation device configured to controllably create a hypoxic environment within the preservation space having an oxygen content that is lower than the oxygen content of air; wherein the method comprises the steps of

The door body is provided with a containing cavity which is opened towards the outer side of the door body, the containing cavity is communicated with the space at the inner side of the door body, and the fresh-keeping device is arranged in the containing cavity; and is also provided with

The outer side of the door body is also provided with a door-in-door which is movably connected with the door body, and the door-in-door is provided with an opening state for opening the accommodating cavity and a closing state for closing the accommodating cavity.

2. The refrigerator according to claim 1, wherein,

the door body is provided with an opening state for opening the storage space in the box body and a closing state for closing the storage space in the box body;

an air inlet communicated with the top or the upper part of the accommodating cavity and an air outlet communicated with the bottom or the lower part of the accommodating cavity are formed in the inner side of the door body; and is also provided with

When the door body is in the closed state, the accommodating cavity is communicated with the storage space through the air inlet and the air outlet, so that air in the storage space is allowed to flow through the air inlet into the accommodating cavity and flow out of the accommodating cavity through the air outlet.

3. The refrigerator according to claim 2, wherein,

the air inlet is provided with an air door component, and the air door component is configured to controllably open and close the air inlet and adjust the overflow area of the air inlet.

4. The refrigerator according to claim 3, wherein,

the inner side of the door body is also provided with a cover plate, the cover plate is covered on the top wall of the cavity of the accommodating cavity, and a concave cavity which is downwards opened and upwards sunken is defined in the cover plate;

the air inlet comprises a first sub air inlet formed in the rear peripheral wall, facing the rear side of the door body, of the cover plate and a second sub air inlet formed in the top wall of the cavity of the accommodating cavity, and the first sub air inlet is communicated with the second sub air inlet through the concave cavity; and is also provided with

The air door assembly is used for controllably opening and closing the first sub air inlet and adjusting the overflow area of the first sub air inlet.

5. The refrigerator according to claim 4, wherein,

the air door assembly is arranged in the concave cavity and is provided with an air door plate which can be pivotally connected with the cover plate, and the air door plate opens and closes the first sub air inlet at the inner side of the first sub air inlet facing the concave cavity; and is also provided with

An elastic buffer piece positioned around the first sub air inlet is arranged on the inner side of the backward peripheral wall of the cover plate, which faces the concave cavity, so that the air door plate is elastically propped against the elastic buffer piece when the air door plate closes the first sub air inlet.

6. The refrigerator according to claim 1, wherein,

the preservation device is configured to create a hypoxic environment within the preservation space in such a way that there is no pressure differential between the preservation space and an external space of the preservation device.

7. The refrigerator of claim 6, wherein the fresh-keeping means comprises:

the fresh-keeping box is internally limited with the fresh-keeping space;

an oxygen-enriched membrane assembly having at least one oxygen-enriched membrane configured such that oxygen in air on a first side thereof is more permeable through the oxygen-enriched membrane to a second side of the oxygen-enriched membrane relative to nitrogen therein; the first side of the oxygen-enriched film is communicated with the fresh-keeping space; and

the air extracting device is communicated with the space where the second side of the oxygen-enriched film is positioned so as to controllably extract the gas in the space where the second side of the oxygen-enriched film is positioned, so that negative pressure is formed in the fresh-keeping space; wherein the method comprises the steps of

The preservation box is provided with a pressure balance hole which is communicated with the preservation space and the outer space of the preservation box, so that air in the outer space of the preservation box enters the preservation space through the pressure balance hole when negative pressure is formed in the preservation space.

8. The refrigerator according to claim 7, wherein,

the preservation box comprises a box body and a cover body which is covered on the box body, wherein a preservation space is formed in the box body, and the pressure balance hole is formed in the cover body.

9. The refrigerator according to claim 8, wherein,

the cover body comprises an inner layer cover and an outer layer cover covered on the outer side of the inner layer cover, and the pressure balance hole comprises an inner layer hole penetrating through the inner layer cover along the thickness direction of the inner layer cover and an outer layer hole penetrating through the outer layer cover along the thickness direction of the outer layer cover; and is also provided with

The inner layer cover and the outer layer cover are arranged at intervals to form a pressure buffering space, and the inner layer holes are communicated with the outer layer holes through the pressure buffering space.

10. The refrigerator according to claim 7, wherein,

the oxygen-enriched film component is arranged in the fresh-keeping box, and the air extractor is arranged outside the fresh-keeping box; and is also provided with

And the fresh-keeping box is also provided with an air suction hole, so that the air suction device sucks the gas in the space where the second side of the oxygen-enriched membrane is positioned through the air suction hole.

11. The refrigerator as claimed in claim 10, wherein,

a buffer space is further defined in the preservation box, and the buffer space is communicated with the preservation space;

the oxygen-enriched membrane component is arranged in the buffer space, so that the first side of the oxygen-enriched membrane is indirectly communicated with the fresh-keeping space through the buffer space.

12. The refrigerator as claimed in claim 11, wherein,

the oxygen-enriched membrane assembly further comprises an oxygen-enriched gas collection cavity which is positioned on the second side of the at least one oxygen-enriched membrane and is sealed, and the air extracting device is communicated with the oxygen-enriched gas collection cavity through an air extracting pipeline;

the oxygen-enriched film component extends upwards from a first side of the preservation box to a second side of the preservation box in a tilting way, and the first side of the preservation box is opposite to the second side of the preservation box; and is also provided with

The oxygen-enriched film component is arranged at the second side of the preservation box at intervals with the preservation box, and the air exhaust pipeline is communicated with the oxygen-enriched gas collection cavity at the end part of the oxygen-enriched film component adjacent to the second side of the preservation box.