CN111442603A

CN111442603A - Controlled atmosphere preservation device, refrigerator and controlled atmosphere preservation method thereof

Info

Publication number: CN111442603A
Application number: CN202010311526.7A
Authority: CN
Inventors: 陈佳弘
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-07-24
Anticipated expiration: 2040-04-20
Also published as: CN111442603B

Abstract

The invention discloses an air-conditioning preservation device, a refrigerator and an air-conditioning preservation method thereof, wherein the device comprises: the collecting unit is used for collecting environmental parameters in the accommodating cavity of the air conditioning box; the environmental parameters include: humidity, and content of different constituent gases; the adjusting unit is used for adjusting the humidity in the accommodating cavity of the air conditioning box at least by selecting different humidity control films in more than two humidity control films and/or adjusting the contents of different component gases in the accommodating cavity of the air conditioning box by selecting different oxygen control films in more than two oxygen control films so as to adjust the humidity in the accommodating cavity of the air conditioning box to the target storage humidity of the articles to be preserved and adjust the contents of different gas components in the accommodating cavity of the air conditioning box to the target storage gas content of the articles to be preserved. The scheme of the invention can solve the problem that the fresh-keeping effect of the refrigerating chamber of the refrigerator is not good enough, and achieve the effect of improving the fresh-keeping effect of the refrigerating chamber of the refrigerator.

Description

Controlled atmosphere preservation device, refrigerator and controlled atmosphere preservation method thereof

Technical Field

The invention belongs to the technical field of refrigeration preservation, and particularly relates to a modified atmosphere preservation device, a refrigerator and a modified atmosphere preservation method thereof, in particular to a fruit and vegetable modified atmosphere preservation box of the refrigerator, the refrigerator and the fruit and vegetable modified atmosphere preservation method thereof.

Background

With the improvement of living standard and purchasing power of people, higher requirements are put forward on the variety, quality and edible safety of fresh fruits and vegetables, for example, the requirements of maximally maintaining the natural quality, edible safety and the like of the fruits and vegetables. The quality of the fresh-keeping performance of the refrigerator as a refrigerator of a food cold storage chain is directly related to people's life relatives.

The fresh-keeping effect of the refrigerating chamber of some household refrigerators is limited, the fresh-keeping time for fresh vegetables and fruits is short, and the fresh-keeping time is generally not more than one week.

The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.

Disclosure of Invention

The invention aims to provide an air-conditioned fresh-keeping device, a refrigerator and an air-conditioned fresh-keeping method thereof, aiming at overcoming the defect that the fresh-keeping effect of a refrigerating chamber of the refrigerator is not good enough and achieving the effect of improving the fresh-keeping effect of the refrigerating chamber of the refrigerator.

The invention provides a modified atmosphere preservation device, comprising: the system comprises an air conditioning box, a collecting unit and a regulating unit; the air conditioning box is provided with an accommodating cavity, and the accommodating cavity is used for accommodating articles to be preserved; the collecting unit is used for collecting environmental parameters in the accommodating cavity of the air conditioning box; the environmental parameters include: humidity, and content of different constituent gases; the adjusting unit is at least provided with more than two humidity control films and more than two oxygen control films and is used for adjusting the humidity in the accommodating cavity of the air conditioning box at least by selecting different humidity control films in the more than two humidity control films and/or adjusting the content of different component gases in the accommodating cavity of the air conditioning box at least by selecting different oxygen control films in the more than two oxygen control films so as to adjust the humidity in the accommodating cavity of the air conditioning box to the target storage humidity of the articles to be preserved and adjust the content of different gas components in the accommodating cavity of the air conditioning box to the target storage gas content of the articles to be preserved.

Optionally, the adjustment unit comprises: the air source comprises at least two air cavities, wherein the at least two air cavities comprise a first air cavity and a second air cavity which are arranged in a separated mode; a frame with more than two layers of object placing areas is arranged in the first air cavity; a humidity control film and a baffle are adjacently arranged on each layer of the material area of the frame; a moving piece is arranged between each layer of the placement area of the frame and one pair of end parts of one baffle, and the one pair of end parts of one baffle can move along the moving piece to shield one piece of humidity control film adjacent to the one baffle; a frame with more than two layers of object placing areas is arranged in the second air cavity; an oxygen control film and a baffle are adjacently arranged on each layer of the material area of the frame; and a moving member is arranged between each layer of the material area of the frame and one pair of end parts of one piece of the baffle, and the one pair of end parts of one piece of the baffle can move along the moving member to shield one piece of the oxygen control membrane adjacent to the moving member.

Optionally, wherein the adjusting unit adjusts the contents of different component gases in the accommodating cavity of the modified atmosphere box by selecting different oxygen control films of more than two oxygen control films, and includes: selecting corresponding oxygen control films from more than two oxygen control films according to the corresponding relation between the content of different component gases in the accommodating cavity of the air conditioning box and the oxygen control films; for the selected oxygen control film, the baffle arranged adjacent to the selected oxygen control film is still arranged adjacent to the selected oxygen control film; for the unselected oxygen control film, the baffle plate arranged adjacent to the unselected oxygen control film moves to shield the unselected oxygen control film, so that the space of the baffle plate arranged adjacent to the unselected control film forms an airflow channel; the gas in the accommodating cavity of the gas-regulating box is discharged through the channel and the selected oxygen-controlling film, so that the content of different gas components in the accommodating cavity of the gas-regulating box can be regulated; and/or, the humidity in the holding cavity of the air conditioning box is adjusted through selecting different humidity control films in the humidity control films with more than two sheets by the adjusting unit, and the adjusting unit comprises: selecting corresponding humidity control films from more than two humidity control films according to the corresponding relation between the humidity in the accommodating cavity of the air conditioning box and the humidity control films; for the selected humidity control film, the baffle arranged adjacent to the selected humidity control film is still arranged adjacent to the selected humidity control film; for the unselected humidity control films, the baffle plates arranged adjacent to the unselected humidity control films move to cover the unselected humidity control films, so that the spaces formed by the baffle plates arranged adjacent to the unselected control films after moving form airflow channels; the water vapor in the accommodating cavity of the air conditioning box is discharged after passing through the channel and the selected humidity control film, so that the humidity in the accommodating cavity of the air conditioning box is adjusted.

Optionally, the adjustment unit comprises: the air cavity is internally provided with a frame with more than two layers of object placing areas; a piece of air-conditioning film and a piece of baffle are adjacently arranged on each layer of the arrangement area of the frame; a moving piece is arranged between each layer of the placing area of the frame and one pair of end parts of one baffle plate, and the one pair of end parts of one baffle plate can move along the moving piece to shield one air-conditioning film adjacent to the moving piece; the modified atmosphere film comprises: humidity control films and oxygen control films.

Optionally, the adjusting unit adjusts the humidity in the accommodating cavity of the controlled atmosphere box by selecting different humidity control films of the more than two humidity control films, and/or the adjusting unit adjusts the contents of different component gases in the accommodating cavity of the controlled atmosphere box by selecting different oxygen control films of the more than two oxygen control films, including: selecting corresponding modified atmosphere films from more than two modified atmosphere films according to the corresponding relationship between the humidity and/or the content of the gases with different components in the accommodating cavity of the modified atmosphere box and the modified atmosphere films; for the selected modified atmosphere film, the baffle plates arranged adjacent to the selected modified atmosphere film are still arranged adjacent to the selected modified atmosphere film; for the unselected controlled atmosphere films, the baffle plates arranged adjacent to the unselected controlled atmosphere films move to shield the unselected controlled atmosphere films, so that the spaces formed by the baffle plates arranged adjacent to the unselected controlled films after moving form airflow channels; the air in the accommodating cavity of the air conditioning box is discharged through the channel and the selected air conditioning film, so that the humidity and/or the content of different air components in the accommodating cavity of the air conditioning box can be adjusted.

Optionally, a modified atmosphere box, comprising: the air conditioning box comprises an air conditioning box body and an air conditioning box drawer; the air conditioning box drawer is arranged in the air conditioning box body and can be drawn out or pushed in with the air conditioning box body; the air conditioning box drawer is provided with a containing cavity, and under the condition that the air conditioning box drawer is pushed into the air conditioning box body, a storage space for articles to be preserved is formed between the air conditioning box drawer and the air conditioning box body.

Optionally, the modified atmosphere box further comprises: a sealing switch; the sealing switch is used for detecting whether the air conditioning box is in a sealed state or not; if the modified atmosphere box is in a sealed state, displaying a first state and/or prompting a first message to start the adjusting unit under the condition that the modified atmosphere box is in the sealed state; and if the modified atmosphere box is not in the sealed state, displaying a second state and/or prompting a second message.

Optionally, the method further comprises: a control unit; the control unit is used for determining different humidity control films in the more than two humidity control films according to a humidity difference value between the humidity in the accommodating cavity of the air conditioning box and the target storage humidity of the articles to be preserved, so that the control and adjustment unit adjusts the humidity in the accommodating cavity of the air conditioning box by selecting the different humidity control films in the more than two humidity control films; and/or determining different oxygen control films in the more than two oxygen control films according to the gas content difference between the content of the different component gases in the accommodating cavity of the air-conditioning box and the target stored gas content of the article to be preserved, so that the control and adjustment unit adjusts the content of the different component gases in the accommodating cavity of the air-conditioning box by selecting the different oxygen control films in the more than two oxygen control films.

In accordance with the above apparatus, another aspect of the present invention provides a refrigerator, comprising: the modified atmosphere preservation device is described above.

In another aspect, the invention provides a modified atmosphere preservation method for a refrigerator, comprising: collecting environmental parameters in the accommodating cavity of the air conditioning box through a collecting unit; the environmental parameters include: humidity, and content of different constituent gases; the humidity in the accommodating cavity of the air conditioning box is adjusted by the adjusting unit at least by selecting different humidity control films in more than two humidity control films and/or adjusting the contents of different component gases in the accommodating cavity of the air conditioning box by selecting different oxygen control films in more than two oxygen control films, so that the humidity in the accommodating cavity of the air conditioning box is adjusted to the target storage humidity of the articles to be preserved, and the contents of different gas components in the accommodating cavity of the air conditioning box are adjusted to the target storage gas content of the articles to be preserved.

Optionally, in a case where the adjusting unit includes at least two air chambers, adjusting the contents of the different component gases in the accommodating chamber of the modified atmosphere box by selecting different ones of the two or more oxygen control films through the adjusting unit includes: selecting corresponding oxygen control films from more than two oxygen control films according to the corresponding relation between the content of different component gases in the accommodating cavity of the air conditioning box and the oxygen control films; for the selected oxygen control film, the baffle arranged adjacent to the selected oxygen control film is still arranged adjacent to the selected oxygen control film; for the unselected oxygen control film, the baffle plate arranged adjacent to the unselected oxygen control film moves to shield the unselected oxygen control film, so that the space of the baffle plate arranged adjacent to the unselected control film forms an airflow channel; the gas in the accommodating cavity of the gas-regulating box is discharged through the channel and the selected oxygen-controlling film, so that the content of different gas components in the accommodating cavity of the gas-regulating box can be regulated; and/or, under the condition that the adjusting unit comprises at least two air cavities, the humidity in the accommodating cavity of the air-conditioning box is adjusted through the adjusting unit by selecting different humidity control films in more than two humidity control films, and the humidity adjusting device comprises: selecting corresponding humidity control films from more than two humidity control films according to the corresponding relation between the humidity in the accommodating cavity of the air conditioning box and the humidity control films; for the selected humidity control film, the baffle arranged adjacent to the selected humidity control film is still arranged adjacent to the selected humidity control film; for the unselected humidity control films, the baffle plates arranged adjacent to the unselected humidity control films move to cover the unselected humidity control films, so that the spaces formed by the baffle plates arranged adjacent to the unselected control films after moving form airflow channels; the water vapor in the accommodating cavity of the air conditioning box is discharged after passing through the channel and the selected humidity control film, so that the humidity in the accommodating cavity of the air conditioning box is adjusted.

Optionally, in a case where the adjusting unit includes one air cavity, adjusting the humidity in the accommodating cavity of the controlled atmosphere box by selecting different humidity control films among the more than two humidity control films through the adjusting unit, and/or adjusting the contents of different component gases in the accommodating cavity of the controlled atmosphere box by selecting different oxygen control films among the more than two oxygen control films through the adjusting unit, includes: selecting corresponding modified atmosphere films from more than two modified atmosphere films according to the corresponding relationship between the humidity and/or the content of the gases with different components in the accommodating cavity of the modified atmosphere box and the modified atmosphere films; for the selected modified atmosphere film, the baffle plates arranged adjacent to the selected modified atmosphere film are still arranged adjacent to the selected modified atmosphere film; for the unselected controlled atmosphere films, the baffle plates arranged adjacent to the unselected controlled atmosphere films move to shield the unselected controlled atmosphere films, so that the spaces formed by the baffle plates arranged adjacent to the unselected controlled films after moving form airflow channels; the air in the accommodating cavity of the air conditioning box is discharged through the channel and the selected air conditioning film, so that the humidity and/or the content of different air components in the accommodating cavity of the air conditioning box can be adjusted.

Optionally, the method further comprises: detecting whether the air conditioning box is in a sealed state or not; if the modified atmosphere box is in a sealed state, displaying a first state and/or prompting a first message to start the adjusting unit under the condition that the modified atmosphere box is in the sealed state; and if the modified atmosphere box is not in the sealed state, displaying a second state and/or prompting a second message.

Optionally, the method further comprises: determining different humidity control films in the more than two humidity control films according to a humidity difference value between the humidity in the accommodating cavity of the air conditioning box and the target storage humidity of the articles to be preserved, so that the control and adjustment unit adjusts the humidity in the accommodating cavity of the air conditioning box by selecting the different humidity control films in the more than two humidity control films; and/or determining different oxygen control films in the more than two oxygen control films according to the gas content difference between the content of the different component gases in the accommodating cavity of the air-conditioning box and the target stored gas content of the article to be preserved, so that the control and adjustment unit adjusts the content of the different component gases in the accommodating cavity of the air-conditioning box by selecting the different oxygen control films in the more than two oxygen control films.

According to the scheme, the humidity content and the gas concentration of the fruit and vegetable box are monitored through the humidity sensor and the oxygen/carbon dioxide detector, and the gas components in the air-conditioned fruit and vegetable box are maintained at the appropriate storage conditions of fruits and vegetables through adjusting the oxygen control film and the humidity control film, so that the fresh-keeping effect of the refrigerating chamber of the refrigerator can be improved.

Furthermore, according to the scheme of the invention, the moisture control film is adopted to adjust and control the water vapor generated by the evapotranspiration of the fruits and vegetables according to the storage characteristics of the fruits and vegetables, and the oxygen control film is adopted to control the influence of the respiration of the fruits and vegetables on the concentrations of oxygen and carbon dioxide in the box, so that the gas components in the fruit and vegetable box can be accurately controlled to be at proper concentration values, and the fruit and vegetable fresh-keeping effect is favorably improved.

Furthermore, according to the scheme of the invention, by monitoring the gas concentration in the box, the oxygen control films with different air permeability and the humidity control films with different moisture permeability are adjusted to form different air permeable channels, so that the suitable storage environment of the fruits and vegetables is maintained, and the fruit and vegetable fresh-keeping effect is improved.

Therefore, according to the scheme provided by the invention, the humidity content and the gas concentration in the preservation box are detected, and the humidity content and the gas concentration in the preservation box are adjusted by adjusting the oxygen control film and the humidity control film, so that the humidity content and the gas concentration in the preservation box are maintained under the appropriate storage conditions of the articles in the preservation box after adjustment, the problem that the preservation effect of the refrigerator refrigerating chamber is not good enough is solved, and the effect of improving the preservation effect of the refrigerator refrigerating chamber is achieved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic structural view of an embodiment of the controlled atmosphere preservation apparatus of the present invention;

fig. 2 is a schematic structural view of an air-conditioned fruit and vegetable box according to an embodiment of the refrigerator of the present invention, wherein (a) is a schematic structural view of a discrete structure of the fruit and vegetable air-conditioned box and a drawer of the fruit and vegetable box, (b) is a schematic structural view of a combination of a schematic structural view of a discrete structure of the fruit and vegetable air-conditioned box and a drawer of the fruit and vegetable box, and (c) is a schematic structural view of an air-conditioning film or a humidity control film or an air-conditioning film in an air-;

FIG. 3 is a schematic structural view of an embodiment of an air-conditioned membrane adjusting structure of a refrigerator according to the present invention;

FIG. 4 is a schematic structural view of another embodiment of an air-conditioning film adjusting structure of a refrigerator according to the present invention;

FIG. 5 is a schematic view illustrating a control flow of refrigerating and refreshing fruits and vegetables according to an embodiment of the refrigerator of the present invention;

FIG. 6 is a schematic flow chart of an embodiment of the controlled atmosphere preservation method of the present invention;

FIG. 7 is a schematic flow chart illustrating an embodiment of the method of the present invention for adjusting the content of different component gases in the accommodating cavity of the controlled atmosphere box by selecting different ones of the two or more oxygen control films through the adjusting unit;

FIG. 8 is a schematic flow chart illustrating an embodiment of adjusting the humidity in the accommodating cavity of the controlled atmosphere box by selecting different humidity control films from more than two humidity control films through the adjusting unit in the method of the present invention;

FIG. 9 is a schematic flow chart illustrating an embodiment of the method of the present invention in which the humidity in the receiving cavity of the controlled atmosphere box is adjusted by the adjusting unit by selecting different humidity control films of the two or more humidity control films, and/or the content of different component gases in the receiving cavity of the controlled atmosphere box is adjusted by the adjusting unit by selecting different oxygen control films of the two or more oxygen control films;

FIG. 10 is a schematic flow chart of an embodiment of the method for detecting the tightness of the modified atmosphere box.

The reference numbers in the embodiments of the present invention are as follows, in combination with the accompanying drawings:

1-fruit and vegetable air conditioning box; 2-air-adjusting membrane adjusting structure; 3-a fruit and vegetable box drawer; 4-a gas sensor; 5-a first humidity control film; 6-a second humidity control film; 7-a third moisture controlling membrane; 8-a first oxygen control film; 9-a second oxygen control film; 10-a third oxygen control film; 11-a baffle plate; 12-a guide rail; 13-a splint; 14-oxygen control film or humidity control film or air-conditioning film.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

According to the embodiment of the invention, the controlled atmosphere preservation device is provided. Referring to fig. 1, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The modified atmosphere preservation device can be applied to preservation equipment such as a refrigerator, and the modified atmosphere preservation device of the preservation equipment such as the refrigerator can comprise: the air conditioning box comprises an air conditioning box, a collecting unit and a regulating unit.

The air conditioning box is provided with an accommodating cavity, and the accommodating cavity can be used for accommodating articles to be preserved. For example: the air-conditioning box, such as the air-conditioning fruit and vegetable box, can provide a containing cavity so as to contain the to-be-preserved articles, such as fruits and vegetables, in the cavity, thereby realizing the fresh-keeping storage of the to-be-preserved articles, such as fruits and vegetables.

In an alternative example, a modified atmosphere box, comprising: the air conditioning box comprises an air conditioning box body and an air conditioning box drawer; for example: the modified atmosphere box body can be a fruit and vegetable modified atmosphere box 1, and the modified atmosphere box drawer can be a fruit and vegetable box drawer 3.

The air conditioning box drawer is arranged in the air conditioning box body and can be drawn out or pushed in with the air conditioning box body; the air conditioning box drawer is provided with a containing cavity, and under the condition that the air conditioning box drawer is pushed into the air conditioning box body, a storage space for articles to be preserved is formed between the air conditioning box drawer and the air conditioning box body.

For example: modified atmosphere fruit and vegetable box can include: the fruit and vegetable controlled atmosphere box comprises a fruit and vegetable controlled atmosphere box 1 and a fruit and vegetable box drawer 3, wherein a controlled atmosphere film adjusting structure 2 and a gas sensor 4 are arranged on the fruit and vegetable controlled atmosphere box 1. The modified atmosphere film adjusting structure 2 can be arranged at any suitable position on the upper surface of the fruit and vegetable modified atmosphere box 1, and preferably can be arranged at the middle position of the upper surface of the fruit and vegetable modified atmosphere box 1. The fruit and vegetable air conditioning box 1 is in a rectangular annular structure, the fruit and vegetable box drawer 3 is in a rectangular accommodating structure, and the fruit and vegetable box drawer 3 can be arranged inside the fruit and vegetable air conditioning box 1; preferably, the fruit and vegetable controlled atmosphere box 1 and the fruit and vegetable box drawer 3 can form a drawer-shaped structure, and the fruit and vegetable box drawer 3 can be arranged in the fruit and vegetable controlled atmosphere box 1 in a pulling mode. The fruit and vegetable box drawer 3 is provided with a containing cavity, and fruits and vegetables can be contained in the containing cavity of the fruit and vegetable box drawer 3.

The collecting unit can be installed at any position of any part of the modified atmosphere box body and the modified atmosphere box drawer, preferably can be installed on the modified atmosphere box body, and can collect the environmental parameters in the modified atmosphere box drawer. The adjusting unit can be arranged at any position of any part of the modified atmosphere box body and the modified atmosphere box drawer, preferably can be arranged on the modified atmosphere box body, and can adjust the environmental parameters in the modified atmosphere box drawer.

Therefore, the modified atmosphere box is formed by the drawing structure between the modified atmosphere box body and the modified atmosphere box drawer, the modified atmosphere box is simple in structure, articles to be preserved can be stored conveniently, and the collection unit and the adjusting unit can detect and adjust environmental parameters in the accommodating space in the modified atmosphere box conveniently.

In a further optional example, the modified atmosphere box may further comprise: and (6) sealing the switch.

The sealing switch can be arranged between the modified atmosphere box body and the modified atmosphere box drawer and can be used for detecting whether the modified atmosphere box is in a sealing state, such as detecting whether the modified atmosphere box body and the modified atmosphere box drawer are in the sealing state; if the atmosphere control box is in a sealed state, if the space between the atmosphere control box body and the atmosphere control box drawer is in a sealed state, displaying a first state and/or prompting a first message to open the adjusting unit under the condition that the atmosphere control box is in the sealed state, namely allowing the adjusting unit to at least adjust the humidity in the accommodating cavity of the atmosphere control box to the target storage humidity of the articles to be preserved and adjust the content of different gas components in the accommodating cavity of the atmosphere control box to the target storage gas content of the articles to be preserved under the condition that the atmosphere control box is in the sealed state; and if the modified atmosphere box is not in a sealed state, if the state between the modified atmosphere box body and the modified atmosphere box drawer is not in a sealed state, displaying a second state and/or prompting a second message.

For example: the user starts the air-conditioning function according to the requirement, detects whether the box body of the air-conditioning fruit and vegetable box is sealed, and continues to execute the air-conditioning operation if the box body of the air-conditioning fruit and vegetable box is sealed; and otherwise, prompting the user to close the controlled atmosphere fruit and vegetable box, and then returning to continuously detect whether the box body of the controlled atmosphere fruit and vegetable box is sealed. For example, the sealing switch may be selected from an indicator light and/or a reminder, for example, the indicator light may be on when the atmosphere box drawer is removed from the atmosphere box body, and/or the first message may be a reminder that the atmosphere box is not sealed, the indicator light may be off when the atmosphere box drawer is pushed into the atmosphere box body, and/or the second message may be a reminder that the atmosphere box is sealed.

Therefore, the sealing switch is arranged between the modified atmosphere box body and the modified atmosphere box drawer of the modified atmosphere box, so that whether the modified atmosphere box body and the modified atmosphere box drawer are sealed or not can be detected, the adjusting unit is started to adjust the environmental parameters in the accommodating cavity of the modified atmosphere box under the condition that the modified atmosphere box body and the modified atmosphere box drawer are sealed, the adjusting effect is improved, and the energy-saving property is good; in addition, whether the sealing state between the air conditioning box body and the air conditioning box drawer is detected through the sealing switch, a user can conveniently know whether the sealing state between the air conditioning box body and the air conditioning box drawer is sealed in time, and the humanization is good.

Specifically, the collecting unit can be used for collecting the environmental parameters in the accommodating cavity of the modified atmosphere box under the condition that the modified atmosphere box accommodates the articles to be preserved. The environmental parameters may include: humidity, and content of different constituent gases. For example: the acquisition unit can be arranged on the shell of the modified atmosphere box or in the modified atmosphere box to acquire environmental parameters such as humidity, gas components and the like in the modified atmosphere box. For example, the collection unit may include a humidity sensor, a gas sensor 4 (such as an oxygen sensor, a carbon dioxide sensor, etc.), and the like, the humidity sensor may be configured to collect humidity in the receiving cavity of the modified atmosphere box, the oxygen sensor may be configured to collect the content of oxygen in the receiving cavity of the modified atmosphere box, and the carbon dioxide sensor may be configured to collect the content of carbon dioxide in the receiving cavity of the modified atmosphere box.

Specifically, a regulating unit, such as the modified atmosphere film regulating structure 2, may be provided on the housing of the modified atmosphere box or inside the modified atmosphere box to regulate environmental parameters such as humidity, gas composition and content inside the modified atmosphere box through a humidity controlling film, an oxygen controlling film and the like. The adjusting unit at least comprises more than two humidity control films and more than two oxygen control films, and can be used for adjusting the humidity in the accommodating cavity of the air conditioning box by selecting different humidity control films in the more than two humidity control films and/or adjusting the contents of different component gases in the accommodating cavity of the air conditioning box by selecting different oxygen control films in the more than two oxygen control films according to the environmental parameters in the accommodating cavity of the air conditioning box so as to adjust the humidity in the accommodating cavity of the air conditioning box to the target storage humidity of the articles to be preserved and adjust the contents of different gas components in the accommodating cavity of the air conditioning box to the target storage gas content of the articles to be preserved under the condition that the articles to be preserved are accommodated in the air conditioning box. Wherein, the oxygen control film and the moisture control film are adopted to accurately adjust the gas components, and the moisture control film has moisture permeability and low oxygen/carbon dioxide permeability. The oxygen control film has oxygen/carbon dioxide permeability, but the moisture permeability is very low; by the classification control method, the precise control of each gas component can be realized. For example: the baffles 11 are arranged among the films in the adjusting unit, and when the air-conditioned fruit and vegetable box is used, namely the fruit and vegetable air-conditioned fresh-keeping box, the humidity, the oxygen concentration and the carbon dioxide concentration in the air-conditioned fruit and vegetable box can be detected by the gas sensor 4; according to the gas component value in the gas-regulating fruit and vegetable box, the gas concentration in the fruit and vegetable box can be regulated through the gas-regulating film regulating structure 2; preferably, different modified atmosphere films can be selected and used through the movement of the baffle plate 11 in the modified atmosphere film adjusting structure 2, so as to achieve the purpose of controlling the gas composition in the box.

For example: modified atmosphere techniques are divided into continuous modified atmosphere (CA) and primary Modified Atmosphere (MA). Continuous modified atmosphere (CA) is performed by artificial means on all biological gases including O₂、CO₂And so on. In some schemes, the controlled atmosphere membrane component needs to be added with a vacuum pump and is a continuous controlled atmosphere method, the controlled atmosphere membrane is made of plastics such as PEI (polyetherimide), PET (polyethylene terephthalate) and the like, and the controlled atmosphere membrane is O₂And CO₂The permeation rates of the air-permeable membrane are different, and under the action of vacuum pressure difference, the air passes through the air-regulating membrane to form two environments of oxygen enrichment and oxygen enrichment; the fruits and vegetables are preserved in a low-oxygen environment, and the method has the advantages of high oxygen reduction speed and high cost which is 600 times of the scheme of the invention; humidity can not be adjusted, the humidity in the box is very high, and a large amount of condensation occurs to rot fruits and vegetables.

The primary air-conditioning Method (MA) is to reduce the oxygen concentration in the environment and increase the carbon dioxide concentration by the respiratory metabolism of fruits and vegetables, and to regulate the gas in the box by combining the permeation of the air-conditioning film to oxygen, carbon dioxide and water vapor, so as to stabilize the film.

The scheme of the invention belongs to a one-time air conditioning method, and the humidity control film can only transmit water vapor, and has low oxygen transmission rate and carbon dioxide transmission rate; the fruits and vegetables generate steam through the transpiration, and the amount of the steam permeating from the controlled atmosphere film in the box is equal to the amount of the steam generated by the fruits and vegetables, so that the high-humidity environment can be maintained in the fruit and vegetable box for a long time. The humidity control membrane mainly comprises polyvinyl alcohol and sulfonated polyether ether ketone, and the humidity control membrane has high moisture permeability.

The moisture permeable mechanism is dissolution-diffusion, a plurality of hydrophilic chemical groups are arranged on the modified atmosphere film, and water vapor is easily dissolved on the surface of the modified atmosphere film material and penetrates through the modified atmosphere film to be discharged out of the film under the promotion of the concentration difference of the water vapor on two sides of the film. The mechanism of oxygen control is similar. The oxygen control film can only control the permeation of oxygen and carbon dioxide, and the moisture permeability is very low. The fruits and vegetables in the fruit and vegetable box breathe and consume oxygen and generate carbon dioxide, so that the oxygen of the fruit and vegetable box is reduced, and the carbon dioxide and the humidity are increased at the initial stage. After a period of time, the fruit and vegetable box reaches a balanced state, the permeation amount of oxygen from the modified atmosphere film outside the fruit and vegetable box is equal to the oxygen consumption amount of the fruits and vegetables, and the permeation amount of carbon dioxide from the modified atmosphere film inside the fruit and vegetable box is equal to the amount of carbon dioxide generated by the fruits and vegetables, so that the fruit and vegetable box can keep a low-oxygen high-carbon-dioxide environment for a long time. The main materials of the oxygen control film are PE, PVA, PP and the like. In some schemes, the air-conditioning membrane component can form a vacuum degree in the box body, the pressure difference exists between the inside and the outside of the box, the strength requirement of the fruit and vegetable box is high, and a pressure-resistant structure is required.

For example: the humidity and the gas concentration of the modified atmosphere fruit and vegetable box can be monitored through a humidity sensor and an oxygen/carbon dioxide detector, and the gas components in the modified atmosphere fruit and vegetable box are maintained at the appropriate storage conditions of fruits and vegetables by adjusting an oxygen control film and a humidity control film, so that the preservation effect of a refrigerating chamber of a refrigerator can be improved. If the change rate of the water vapor of the fruits and the vegetables is different from the change rate of the oxygen/carbon dioxide, the moisture control film can be adopted to adjust and control the water vapor generated by the evapotranspiration of the fruits and the vegetables according to the storage characteristics of the fruits and the vegetables, the oxygen control film is adopted to control the influence of the respiration of the fruits and the vegetables on the concentrations of the oxygen and the carbon dioxide in the box, the problem that the gas composition of the fruit and vegetable box can not be simultaneously and accurately controlled by the gas control film can be solved, and the gas composition in the gas control fruit and.

For example: by monitoring the gas concentration in the box, the oxygen control films with different air permeability and the humidity control films with different moisture permeability can be adjusted to form different air permeable channels, so that the proper storage environment of the fruits and vegetables can be maintained; therefore, on the basis of the fruit and vegetable box, the gas concentration in the fruit and vegetable box can be adjusted by utilizing the gas adjusting film adjusting structure so as to maintain the storage environment of the fruits and vegetables and improve the refrigeration and preservation effects of the fruits and vegetables. If the humidity sensor, the oxygen sensor and the carbon dioxide sensor are used for measuring the gas components in the box, and then different oxygen control films and humidity control films are used according to the content adjustment of the gas components, the technical problem that the storage environment cannot be accurately adjusted according to the types and the quantity of fruits and vegetables in the box can be solved on the whole, the humidity in the box can be accurately controlled to be maintained at 92-98%, the oxygen can be maintained at 5-15%, and the carbon dioxide can be accurately controlled to be 3-6%. Therefore, the humidity in the air-conditioned fruit and vegetable box is maintained at 92% -98%, the evaporation of water in the fruits and vegetables is reduced, and the appearance and the taste of the fruits and vegetables are kept fresh; oxygen in the fruit and vegetable box is maintained at 5% -15%, carbon dioxide is maintained at 3% -6%, respiration of fruits and vegetables is reduced, and consumption of nutrient substances of the fruits and vegetables is prevented.

Therefore, the humidity in the accommodating cavity of the air conditioning box is adjusted by selecting different humidity control films in more than two humidity control films and/or the contents of different component gases in the accommodating cavity of the air conditioning box are adjusted by selecting different oxygen control films in more than two oxygen control films, so that the humidity in the accommodating cavity of the air conditioning box is at least adjusted to the target storage humidity of the articles to be preserved, the contents of different gas components in the accommodating cavity of the air conditioning box are adjusted to the target storage gas content of the articles to be preserved, the environmental parameters in the accommodating cavity of the air conditioning box can be adjusted to improve the preservation environment, the preservation time of the articles to be preserved in the accommodating cavity of the air conditioning box is prolonged, and the preservation effect of the articles to be preserved in the accommodating cavity of the air conditioning box is improved.

In an alternative example, the adjusting unit may include: the at least two air cavities may include a first air cavity and a second air cavity, and the first air cavity and the second air cavity are separately disposed. The first air cavity and the second air cavity can be formed by two frames which are arranged at intervals, or can be formed by separating the middle of one large frame.

For example: the modified atmosphere film regulating structure 2 can be divided into two air cavities, namely a first air cavity such as a left air cavity and a second air cavity such as a right air cavity. The left air chamber can be used for adjusting humidity, the right air chamber can be used for adjusting oxygen and carbon dioxide concentration, and the left air chamber and the right air chamber are separated.

Specifically, a frame with more than two layers of object placing areas is arranged in the first air cavity, and a certain interval is arranged between the two adjacent layers of frames; a humidity control film and a baffle are adjacently arranged on each layer of the material area of the frame; between each layer of the material area of the frame and one pair of ends of one of the baffles, a moving member is arranged, and one pair of ends of one of the baffles can move along the moving member to shield one of the humidity control films adjacent to the one of the baffles. That is, two or more humidity control films are layered in the first air chamber, such as the first humidity control film 5, the second humidity control film 6, and the third humidity control film 7, which are sequentially disposed in the first air chamber from top to bottom at an interval.

For example: the moving member may be a guide rail 12. The number of guide rails 12 may be a pair, and two guide rails 12 of a pair of guide rails 12 are arranged relatively in parallel at a set of opposite edges of the barrier 11, such as the short sides of the barrier 11. For example: more than two humidity control films (such as a first humidity control film 5, a second humidity control film 6 and a third humidity control film 7) are sequentially arranged in the left air cavity in a stacking mode from top to bottom, a baffle 11 is arranged on the right side of the more than two humidity control films (such as the first humidity control film 5, the second humidity control film 6 and the third humidity control film 7), and the baffle 11 can move on a guide rail 12 in a translation mode.

Specifically, the second air cavity is provided with frames with more than two layers of object placing areas, and a certain interval is arranged between every two adjacent layers of frames; an oxygen control film and a baffle are adjacently arranged on each layer of the material area of the frame; and a moving member is arranged between each layer of the material area of the frame and one pair of end parts of one piece of the baffle, and the one pair of end parts of one piece of the baffle can move along the moving member to shield one piece of the oxygen control membrane adjacent to the moving member.

That is, two or more oxygen control films are layered in the second air chamber, such as the first oxygen control film 8, the second oxygen control film 9, and the third oxygen control film 10, which are sequentially disposed in the second air chamber from top to bottom at an interval.

For example: the moving member may be the guide rail 12. The number of guide rails 12 may be a pair, and two guide rails 12 of a pair of guide rails 12 are arranged relatively in parallel at a set of opposite edges of the barrier 11, such as the short sides of the barrier 11. For example: more than two oxygen control films (such as a first oxygen control film 8, a second oxygen control film 9 and a third oxygen control film 10) are sequentially stacked from top to bottom in the right air cavity, a baffle 11 is arranged on the right side of the more than two oxygen control films (such as the first oxygen control film 8, the second oxygen control film 9 and the third oxygen control film 10), and the baffle 11 can move on a guide rail 12 in a translation mode.

From this, through setting up accuse wet film and accuse oxygen membrane alone on two pieces of diaphragms, can adjust humidity and the content of different composition gases mutually independently, satisfy the regulation demand that is fresh-keeping great use of treating fresh-keeping article, can effectively guarantee fresh-keeping effect, the fresh-keeping time of the article of treating fresh-keeping is prolonged.

Optionally, the adjusting unit adjusts the contents of different component gases in the accommodating cavity of the modified atmosphere box by selecting different oxygen control films of more than two oxygen control films, and may include: selecting corresponding oxygen control films from more than two oxygen control films according to the corresponding relation between the content of different component gases in the accommodating cavity of the air-conditioning box and the oxygen control films.

For example: the correspondence between the humidity in the accommodating cavity of the modified atmosphere box and the oxygen control film can be different oxygen control films according to the concentrations of oxygen and carbon dioxide in the modified atmosphere fruit and vegetable box, and the selection basis can be shown in the example shown in table 1.

Table 1: oxygen control membrane gear selection

Further, in the process that the adjusting unit adjusts the contents of different component gases in the accommodating cavity of the air adjusting box by selecting different oxygen control films of more than two oxygen control films, the baffle plates which are arranged adjacent to the selected oxygen control films are still arranged adjacent to the selected oxygen control films for the selected oxygen control films; for the unselected oxygen control film, the baffle plate arranged adjacent to the unselected oxygen control film moves to shield the unselected oxygen control film, so that the space of the baffle plate arranged adjacent to the unselected control film forms an airflow channel; the gas in the accommodating cavity of the gas-regulating box is discharged through the channel and the selected oxygen-controlling film, so that the content of different gas components in the accommodating cavity of the gas-regulating box can be regulated;

for example: the gas sensor 4 measures the gas content in the fruit and vegetable box with modified atmosphere, and further selects the oxygen control film according to the humidity measured value in the gas content measurement result, if the required oxygen control film in the first oxygen control film 8, the second oxygen control film 9 and the third oxygen control film 10 is selected, after the oxygen control film is adjusted, the user opens the fruit and vegetable box, and the modified atmosphere is finished.

For example: and selecting a proper oxygen control film according to the concentration of oxygen and carbon dioxide in the controlled atmosphere fruit and vegetable box, wherein the baffle plate 11 at the selected oxygen control film is moved to the right to avoid shielding the selected oxygen control film, and the baffle plate 11 at the unselected oxygen control film is moved to the left to shield the unselected oxygen control film. By moving the baffle 11 in the modified atmosphere film regulating structure 2, different modified atmosphere films, in particular oxygen control films, can be selected and used. For example: if the first oxygen control film 8 is selected to be used, the right baffle 11 of the second oxygen control film 9 and the third oxygen control film 10 moves to the left to cover and shield the second oxygen control film 9 and the third oxygen control film 10, the right sides of the second oxygen control film 9 and the third oxygen control film 10 are non-shielded channels, and gas in the box is transmitted out through the first oxygen control film 8 through the channels.

Therefore, the adjustment of the contents of different gas components in the controlled atmosphere box is realized by moving the baffle beside the oxygen control membrane, the structure is simple, the reasonable control of the contents of the gas components in the controlled atmosphere box, such as oxygen, carbon dioxide and the like, is favorable for realizing the effective control of the gas components and the contents in the controlled atmosphere box.

Optionally, the adjusting unit adjusts the humidity in the accommodating cavity of the air conditioning box by selecting different humidity control films of more than two humidity control films, and may include: and selecting corresponding humidity control films from more than two humidity control films according to the corresponding relation between the humidity in the accommodating cavity of the air conditioning box and the humidity control films.

For example: the correspondence between the humidity in the accommodating cavity of the modified atmosphere box and the humidity control films can be different humidity control films according to the humidity in the modified atmosphere fruit and vegetable box, and the basis for selection and judgment can be seen in the example shown in table 2.

Table 2: humidity control film gear selection

Kind of humidity controlling film	Moisture permeability (g/m)²·24h)	Humidity (%)
			First humidity control film	2000～4000	≥98
Second humidity control film	1000～2000	92～98
			Third moisture control film	200～500	≤92

Further, in the process that the adjusting unit adjusts the humidity in the accommodating cavity of the air conditioning box by selecting different humidity control films of more than two humidity control films, the baffle plates which are arranged adjacent to the selected humidity control film are still arranged adjacent to the selected humidity control film for the selected humidity control film; for the unselected humidity control films, the baffle plates arranged adjacent to the unselected humidity control films move to cover the unselected humidity control films, so that the spaces formed by the baffle plates arranged adjacent to the unselected control films after moving form airflow channels; the water vapor in the accommodating cavity of the air conditioning box is discharged after passing through the channel and the selected humidity control film, so that the humidity in the accommodating cavity of the air conditioning box is adjusted.

For example: the gas sensor 4 is used for measuring the gas content in the fruit and vegetable box with modified atmosphere, and then the humidity control film is selected according to the humidity measured value in the gas content measurement result, if the humidity control film required in the first humidity control film 5, the second humidity control film 6 and the third humidity control film 7 is selected, after the humidity control film is adjusted, a user opens the fruit and vegetable box, and modified atmosphere is finished.

For example: and selecting a proper humidity control film according to the humidity in the air-conditioned fruit and vegetable box, wherein the baffle 11 at the selected humidity control film is moved to the right to avoid shielding the selected humidity control film, and the baffle 11 at the unselected humidity control film is moved to the left to shield the unselected humidity control film. By moving the baffle 11 in the modified atmosphere film conditioning structure 2, different modified atmosphere films, particularly humidity control films, can be selected for use. For example: if the first humidity control film 5 is selected to be used, the right baffles 11 of the second humidity control film 6 and the third humidity control film 7 move left to cover and shield the second humidity control film 6 and the third humidity control film 7, the right sides of the second humidity control film 6 and the third humidity control film 7 are non-shielded channels, and water vapor in the box is transmitted out through the first humidity control film 5 through the channels.

Therefore, the humidity in the air conditioning box is adjusted by moving the baffle beside the humidity control film, the structure is simple, the humidity in the air conditioning box is reasonably controlled, and the effective control of the humidity in the air conditioning box is favorably realized.

In another alternative example, the adjusting unit may include: the air cavity is internally provided with frames with more than two layers of object placing areas, and a certain interval is arranged between every two adjacent layers of frames; a piece of air-conditioning film and a piece of baffle are adjacently arranged on each layer of the arrangement area of the frame; a moving piece is arranged between each layer of the placing area of the frame and one pair of end parts of one baffle plate, and the one pair of end parts of one baffle plate can move along the moving piece to shield one air-conditioning film adjacent to the moving piece; the modified atmosphere film comprises: humidity control films and oxygen control films.

For example: in order to save space, the functions of the oxygen control film and the humidity control film can be realized on the same air-conditioning film. The moving member may be a guide rail 12. The number of guide rails 12 may be a pair, and two guide rails 12 of a pair of guide rails 12 are arranged relatively in parallel at a set of opposite edges of the barrier 11, such as the short sides of the barrier 11. The functions of the oxygen control film and the humidity control film are realized on the same air-conditioning film, and the method specifically comprises the following steps: the modified atmosphere film has the functions of controlling humidity and controlling oxygen/carbon dioxide, and has oxygen transmittance, carbon dioxide transmittance and water vapor transmittance.

Therefore, the humidity control film and the oxygen control film are arranged on one film to form the air conditioning film, so that the occupied space of the adjusting unit can be saved, and the use of the to-be-preserved articles with smaller adjusting requirements on preservation is met.

Optionally, the adjusting unit adjusts the humidity in the accommodating cavity of the controlled atmosphere box by selecting different humidity control films of the more than two humidity control films, and/or the adjusting unit adjusts the contents of different component gases in the accommodating cavity of the controlled atmosphere box by selecting different oxygen control films of the more than two oxygen control films, may include: selecting corresponding modified atmosphere films from more than two modified atmosphere films according to the corresponding relationship between the humidity and/or the content of the gases with different components in the accommodating cavity of the modified atmosphere box and the modified atmosphere films.

For example: the humidity sensor and the oxygen/carbon dioxide sensor are used for monitoring the gas components in the box, and the use of the modified atmosphere film is mainly adjusted by taking humidity as an index, and specific examples can be seen in table 3.

Table 3: controlled atmosphere film shift selection

Further, in the process that the adjusting unit adjusts the humidity in the accommodating cavity of the air conditioning box by selecting different humidity control films in more than two humidity control films and/or the adjusting unit adjusts the contents of different component gases in the accommodating cavity of the air conditioning box by selecting different oxygen control films in more than two oxygen control films, the baffle plates which are arranged adjacent to the selected air conditioning film are still arranged adjacent to the selected air conditioning film; for the unselected controlled atmosphere films, the baffle plates arranged adjacent to the unselected controlled atmosphere films move to shield the unselected controlled atmosphere films, so that the spaces formed by the baffle plates arranged adjacent to the unselected controlled films after moving form airflow channels; the air in the accommodating cavity of the air conditioning box is discharged through the channel and the selected air conditioning film, so that the humidity and/or the content of different air components in the accommodating cavity of the air conditioning box can be adjusted.

For example: the gas sensor 4 measures the gas content in the modified atmosphere fruit and vegetable box, and further selects the modified atmosphere film according to the humidity measured value and/or the content of different gas components in the gas content measurement result, for example, selects the required modified atmosphere film in the first modified atmosphere film, the second modified atmosphere film and the third modified atmosphere film, after the modified atmosphere film is adjusted, a user opens the fruit and vegetable box, and the modified atmosphere is finished.

For example: and selecting a proper modified atmosphere film according to the humidity in the modified atmosphere fruit and vegetable box, wherein the baffle plate 11 at the selected modified atmosphere film is moved to the right to avoid shielding the selected modified atmosphere film, and the baffle plates 11 at the unselected modified atmosphere films are moved to the left to shield the unselected modified atmosphere films. By moving the baffle plate 11 in the modified atmosphere film adjusting structure 2, different modified atmosphere films, in particular modified atmosphere films, can be selected and used. For example: if the first modified atmosphere film is selected to be used, the right baffle plate 11 of the second modified atmosphere film and the third modified atmosphere film moves to the left to cover and shield the second modified atmosphere film and the third modified atmosphere film, the right sides of the second modified atmosphere film and the third modified atmosphere film are non-shielding channels, and water vapor and gas in the box are transmitted out through the first modified atmosphere film through the channels.

Therefore, the adjustment of the humidity and the content of different gas components in the atmosphere control box is realized by moving the baffle plates beside the atmosphere control film, the structure is simple, the reasonable control of the humidity and the content of the gas components such as oxygen, carbon dioxide and the like in the atmosphere control box is favorable for realizing the effective control of the humidity, the gas components and the content in the atmosphere control box.

In an alternative embodiment, the method may further include: a control unit. And the control unit can be respectively connected to the acquisition unit and the adjusting unit. For example: the control unit can be a first controller of the preservation equipment such as a refrigerator and the like to which the controlled atmosphere box belongs, or can be a second controller which is independently arranged from the first controller of the preservation equipment such as a refrigerator and the like to which the controlled atmosphere box belongs.

The control unit can be used for determining different humidity control films in the more than two humidity control films according to a humidity difference value between the humidity in the accommodating cavity of the air conditioning box and the target storage humidity of the articles to be preserved, so as to control the adjusting unit to adjust the humidity in the accommodating cavity of the air conditioning box by selecting the different humidity control films in the more than two humidity control films; and/or determining different oxygen control films in the more than two oxygen control films according to the gas content difference between the content of the different component gases in the accommodating cavity of the air-conditioning box and the target stored gas content of the article to be preserved, so that the control and adjustment unit adjusts the content of the different component gases in the accommodating cavity of the air-conditioning box by selecting the different oxygen control films in the more than two oxygen control films. The gas with different components mainly refers to oxygen, so that the oxygen content in the modified atmosphere box is reasonably controlled, the reasonable preservation of the articles to be preserved is realized, and the preservation effect is improved.

Therefore, different humidity control films in more than two humidity control films are determined by the controller according to the humidity difference between the humidity in the accommodating cavity of the air conditioning box and the target storage humidity of the object to be preserved and/or different oxygen control films in more than two oxygen control films are determined according to the gas content difference between the content of different component gases in the accommodating cavity of the air conditioning box and the target storage gas content of the object to be preserved, so that the automatic adjustment of the environmental parameters in the accommodating cavity of the air conditioning box can be realized, the automation degree and the intelligence degree of the preservation control of the air conditioning box are greatly improved, and the user experience is improved.

A large number of experiments prove that by adopting the technical scheme of the invention, the humidity content and the gas concentration of the fruit and vegetable box are monitored by the humidity sensor and the oxygen/carbon dioxide detector, and the gas components in the air-conditioned fruit and vegetable box are maintained at the proper storage conditions of fruits and vegetables by adjusting the oxygen control film and the humidity control film, so that the fresh-keeping effect of the refrigerating chamber of the refrigerator can be improved.

According to the embodiment of the invention, the refrigerator corresponding to the modified atmosphere preservation device is also provided. The refrigerator may include: the modified atmosphere preservation device is described above.

Based on the problem of limited fresh-keeping effect of the refrigerating chamber of the household refrigerator, the research on storing fruits and vegetables in the household refrigerator becomes a research hotspot in the fresh-keeping field along with the promotion of various fresh-keeping refrigerators.

Most of common refrigerators are air-cooled refrigerators, the humidity of low-temperature air in the refrigerator is very low, about 50%, and the storage humidity of fruits and vegetables requires more than 92%, so that the fruits and vegetables lose water and wither due to low humidity, and the preservation period is short.

The modified atmosphere preservation technology is a technology with wide application range in the field of fruit and vegetable preservation, and is characterized in that on the basis of original refrigeration, parameters such as temperature, humidity, carbon dioxide, oxygen concentration, ethylene concentration and the like in a storage environment are controlled, so that the respiration of fruits and vegetables is inhibited, the metabolic process is delayed, the fruits and vegetables are in a dormant state, the fruits and vegetables are prevented from being rotted and deteriorated, and the storage period is prolonged. The temperature, the humidity, the carbon dioxide and the oxygen concentration have the following effects on the fruit and vegetable fresh-keeping effect: temperature > humidity > carbon dioxide and oxygen concentration. The controlled atmosphere preservation technology is widely applied to the fields of controlled atmosphere storage, fruit and vegetable cold chain transportation and the like, and is only applied to Haier in the aspect of refrigerator products.

Modified atmosphere storage can be classified into continuous modified atmosphere (CA) and single modified atmosphere (SIMS) depending on the accuracy of gas composition control. Continuous modified atmosphere (CA) is performed by artificial means on all biological gases including O₂、CO₂And ethylene and the fragrance released by the fruits are controlled, and the method is mainly applied to air-conditioned cold storage and air-conditioned cold storage transportation. The primary air-conditioning Method (MA), namely the modified atmosphere storage, reduces the oxygen concentration in the environment and improves the carbon dioxide concentration by the respiratory metabolism of fruits and vegetables, the oxygen and carbon dioxide concentration change greatly in the whole storage process, and a constant gas index does not exist, and the common primary air-conditioning method is the modified atmosphere preservative film packaging.

The key point of the application of the modified atmosphere preservation technology is the air separation membrane technology (namely the modified atmosphere membrane technology), and oxygen, carbon dioxide and humidity (water vapor) in a closed space can be adjusted by utilizing the selective permeability of the air separation membrane. The air separation membrane may be classified into a high molecular material, an inorganic material and an organic-inorganic integrated material according to chemical composition. The membrane separation mechanism can be classified into a non-porous membrane and a porous membrane.

In some primary air-conditioning Methods (MA), a high-molecular air-conditioning membrane (air separation membrane) mainly comprising polyethylene, polyether sulfone, polytetrafluoroethylene or polyvinyl alcohol is mainly used, and the effect of regulating the gas components in the fruit and vegetable box is achieved by combining the self-respiration and transpiration effects of fruits and vegetables. However, the fruit and vegetable box with the air-conditioning film cannot ensure that the fruit and vegetable are always in a proper storage environment due to the fact that the variety of the fruit and vegetable is large and the actual storage condition is complex.

In an alternative embodiment, the invention provides a fruit and vegetable controlled atmosphere preservation box of a refrigerator, which can monitor the humidity and the gas concentration of the controlled atmosphere fruit and vegetable box through a humidity sensor and an oxygen/carbon dioxide detector, maintain the gas components in the controlled atmosphere fruit and vegetable box in the proper storage conditions of fruits and vegetables through adjusting an oxygen control film and a humidity control film, and improve the preservation effect of a refrigerating chamber of the refrigerator.

Optionally, in consideration of the difference between the water vapor change rate of the fruits and vegetables and the oxygen/carbon dioxide change rate, the scheme of the invention can adopt the humidity control film to adjust and control the water vapor generated by the evapotranspiration of the fruits and vegetables according to the storage characteristics of the fruits and vegetables, and adopts the oxygen control film to control the influence of the respiration of the fruits and vegetables on the concentrations of oxygen and carbon dioxide in the fruit and vegetable box, so that the problem that the gas components in the fruit and vegetable box can not be simultaneously and accurately controlled by the gas control film can be solved, and the gas components in the fruit and vegetable box are all in.

For example: the storage characteristics are that the fruits and vegetables can simultaneously carry out two physiological reactions of respiration and transpiration in the storage process, the respiration can consume oxygen to produce carbon dioxide, and the transpiration can generate water vapor. The two have different rates of action and therefore require separate membrane regulation.

Optionally, according to the scheme of the invention, the humidity sensor, the oxygen sensor and the carbon dioxide sensor are used for measuring the gas components in the box, and then different oxygen control films and humidity control films are used according to the content adjustment of the gas components, so that the technical problem that the storage environment cannot be accurately adjusted according to the types and the quantity of fruits and vegetables in the box can be solved, the humidity in the box can be accurately controlled to be maintained at 92-98%, the oxygen is maintained at 5-15% and the carbon dioxide is maintained at 3-6%. Therefore, the humidity in the air-conditioned fruit and vegetable box is maintained at 92% -98%, the evaporation of water in the fruits and vegetables is reduced, and the appearance and the taste of the fruits and vegetables are kept fresh; oxygen in the fruit and vegetable box is maintained at 5% -15%, carbon dioxide is maintained at 3% -6%, respiration of fruits and vegetables is reduced, and consumption of nutrient substances of the fruits and vegetables is prevented.

Preferably, the scheme of the invention can adjust and use the oxygen control films with different air permeability and the humidity control films with different moisture permeability by monitoring the gas concentration in the box to form different air permeability channels so as to maintain the proper storage environment of the fruits and vegetables. That is to say, the scheme of the invention can preferably adjust the gas concentration in the fruit and vegetable box by using the gas-adjusting film adjusting structure on the basis of the fruit and vegetable box so as to maintain the storage environment of the fruits and vegetables and improve the refrigeration and preservation effects of the fruits and vegetables.

For example: the base material of the humidity control film is polyvinyl alcohol, the moisture permeability mechanism of the humidity control film is described as dissolution and diffusion, the structure of the humidity control film is formed by blow molding of polyvinyl alcohol materials, the moisture permeability is different, the higher the hydrophilicity of the material is, the higher the moisture permeability is, and the moisture permeability is. The same principle is applied to the oxygen control film.

In an alternative embodiment, a specific implementation process of the scheme of the present invention may be exemplarily described with reference to the examples shown in fig. 2 to fig. 5.

Fig. 2 is a schematic structural view of an air-conditioned fruit and vegetable box according to an embodiment of the refrigerator of the invention, wherein (a) is a schematic structural view of a discrete structure of the fruit and vegetable air-conditioned box and a drawer of the fruit and vegetable box, (b) is a schematic structural view of a combined structure of the discrete structural view of the fruit and vegetable air-conditioned box and the drawer of the fruit and vegetable box, and (c) is a schematic structural view of an oxygen film or a humidity control film or an air-conditioned film in an air-conditioned film regulating structure. As shown in fig. 2, the modified atmosphere fruit and vegetable box may comprise: the fruit and vegetable controlled atmosphere box comprises a fruit and vegetable controlled atmosphere box 1 and a fruit and vegetable box drawer 3, wherein a controlled atmosphere film adjusting structure 2 and a gas sensor 4 are arranged on the fruit and vegetable controlled atmosphere box 1. The modified atmosphere film adjusting structure 2 can be arranged at any suitable position on the upper surface of the fruit and vegetable modified atmosphere box 1, and preferably can be arranged at the middle position of the upper surface of the fruit and vegetable modified atmosphere box 1. The fruit and vegetable air conditioning box 1 is in a rectangular annular structure, the fruit and vegetable box drawer 3 is in a rectangular accommodating structure, and the fruit and vegetable box drawer 3 can be arranged inside the fruit and vegetable air conditioning box 1; preferably, the fruit and vegetable controlled atmosphere box 1 and the fruit and vegetable box drawer 3 can form a drawer-shaped structure, and the fruit and vegetable box drawer 3 can be arranged in the fruit and vegetable controlled atmosphere box 1 in a pulling mode. The fruit and vegetable box drawer 3 is provided with a containing cavity, and fruits and vegetables can be contained in the containing cavity of the fruit and vegetable box drawer 3. For example: the structure has the advantages of good sealing performance in the aspect of preservation, and only one contact surface is arranged between the fruit and vegetable box drawer 3 and the box body (namely the fruit and vegetable controlled atmosphere box 1), so that the low-oxygen high-humidity environment in the box can be maintained.

Wherein, accuse oxygen membrane, accuse wet membrane, perhaps accuse oxygen membrane and accuse wet membrane constitute the membrane of adjusting atmosphere jointly can include: two sandwich panels 13, and an oxygen or moisture or gas regulating membrane 14 sandwiched between the two sandwich panels 13. A plurality of ventilation holes may be formed on each layer of the splint 13.

When the air-conditioned fruit and vegetable box is used, namely the fruit and vegetable air-conditioned preservation box, the humidity, the oxygen concentration and the carbon dioxide concentration in the air-conditioned fruit and vegetable box can be detected by the gas sensor 4. According to the gas component value in the gas-regulating fruit and vegetable box, the gas concentration in the fruit and vegetable box can be regulated through the gas-regulating film regulating structure 2. Preferably, different modified atmosphere films can be selected and used through the movement of the baffle plate 11 in the modified atmosphere film adjusting structure 2, so as to achieve the purpose of controlling the gas composition in the box.

Fig. 3 is a schematic structural view of an embodiment of an air-conditioned film adjusting structure of a refrigerator according to the present invention. As shown in fig. 3, the modified atmosphere film regulating structure 2 can be divided into two air cavities, namely a left air cavity and a right air cavity; the left air chamber can be used for adjusting humidity, the right air chamber can be used for adjusting oxygen and carbon dioxide concentration, and the left air chamber and the right air chamber are separated. For example: the height or thickness of the modified atmosphere film conditioning structure 2 may be 1.5 mm.

More than two humidity control films (such as a first humidity control film 5, a second humidity control film 6 and a third humidity control film 7) are sequentially arranged in the left air cavity in a stacking mode from top to bottom, a baffle 11 is arranged on the right side of the more than two humidity control films (such as the first humidity control film 5, the second humidity control film 6 and the third humidity control film 7), and the baffle 11 can move on a guide rail 12 in a translation mode. And selecting a proper humidity control film according to the humidity in the air-conditioned fruit and vegetable box, wherein the baffle 11 at the selected humidity control film is moved to the right to avoid shielding the selected humidity control film, and the baffle 11 at the unselected humidity control film is moved to the left to shield the unselected humidity control film.

For example: the up-down interval of about 0.3cm is required to be kept between different air-conditioning film structural parts. The air-conditioning film is thin, the texture of the air-conditioning film is somewhat like that of a daily-used freshness protection package, the air-conditioning film is required to be fixed on a plastic plate with holes and combined by a hot melt adhesive or ultrasonic bonding method, and the thickness of a structural part of the oxygen control film or the humidity control film is about 0.2 cm.

Similarly, more than two oxygen control films (such as the first oxygen control film 8, the second oxygen control film 9 and the third oxygen control film 10) are sequentially arranged in the right air cavity in a stacking manner from top to bottom, a baffle 11 is arranged on the right side of the more than two oxygen control films (such as the first oxygen control film 8, the second oxygen control film 9 and the third oxygen control film 10), and the baffle 11 can move on the guide rail 12 in a translation manner. And selecting a proper oxygen control film according to the concentration of oxygen and carbon dioxide in the controlled atmosphere fruit and vegetable box, wherein the baffle plate 11 at the selected oxygen control film is moved to the right to avoid shielding the selected oxygen control film, and the baffle plate 11 at the unselected oxygen control film is moved to the left to shield the unselected oxygen control film.

Wherein, the number of the guide rails 12 can be a pair, and two guide rails 12 in the pair of guide rails 12 are arranged at a group of opposite edges of the baffle plate 11 in a relatively parallel manner.

Fig. 4 is a schematic structural view of another embodiment of the air-conditioning film regulating structure of the refrigerator of the invention. Different modified atmosphere films can be selected by moving the baffle plate 11 in the modified atmosphere film adjusting structure 2. For example: as shown in fig. 4, if the first humidity control film 5 is selected to be used, the right side baffle 11 of the second humidity control film 6 and the third humidity control film 7 moves to the left to cover and shield the second humidity control film 6 and the third humidity control film 7, the right sides of the second humidity control film 6 and the third humidity control film 7 are non-shielded channels, and water vapor in the box passes through the channels and then passes through the first humidity control film 5 to be discharged. The control principle of the right side oxygen control film is the same as that of the left side humidity control film.

Fig. 5 is a schematic control flow diagram of the fruit and vegetable refrigeration and preservation according to an embodiment of the refrigerator of the present invention. As shown in fig. 5, the control flow of the fruit and vegetable refrigeration and preservation may include:

step 1, opening the air conditioning function by a user according to the requirement.

Step 2, detecting whether the box body of the controlled atmosphere fruit and vegetable box is sealed, and if the box body of the controlled atmosphere fruit and vegetable box is sealed, executing the step 3; otherwise, prompting the user to close the air-conditioned fruit and vegetable box, and returning to the step 2 to continue the detection.

And 3, measuring the gas content in the modified atmosphere fruit and vegetable box by using the gas sensor 4, and executing the step 4 or the step 5 according to the gas content measurement result.

And 4, selecting an oxygen control film according to the measured values of oxygen and carbon dioxide in the gas content measurement result, if the oxygen control film required in the first oxygen control film 8, the second oxygen control film 9 and the third oxygen control film 10 can be selected, and after the oxygen control film is adjusted, opening the fruit and vegetable box by a user, and finishing the air adjustment.

Preferably, different oxygen control films can be selected according to the concentrations of oxygen and carbon dioxide in the modified atmosphere fruit and vegetable box, and the selection basis can be seen in the examples shown in table 1.

Table 1: oxygen control membrane gear selection

And 5, selecting the humidity control film according to the humidity measured value in the gas content measurement result, and if the humidity control film required in the first humidity control film 5, the second humidity control film 6 and the third humidity control film 7 is selected, performing humidity control film adjustment, opening the fruit and vegetable box by a user, and finishing air conditioning.

Preferably, different humidity control films can be selected according to the humidity in the modified atmosphere fruit and vegetable box, and the basis for selection and judgment can be seen in the examples shown in table 2.

Table 2: humidity control film gear selection

In the above embodiments, the gas composition can be precisely adjusted by using an oxygen control film and a moisture control film, the moisture control film has a moisture permeability, and the oxygen/carbon dioxide permeability is not very low; the oxygen control films have oxygen/carbon dioxide transmission rates, but very low moisture transmission rates. The method for classified control can realize accurate control of each gas component.

Alternatively, to save space, the functions of the oxygen control film and the humidity control film can be realized on one modified atmosphere film, but the control accuracy of humidity and oxygen and carbon dioxide is reduced.

Specifically, the modified atmosphere film has two functions of humidity control and oxygen control, and the water vapor permeability and the oxygen/carbon dioxide permeability of the modified atmosphere film can be controlled by controlling the content of hydrophilic groups and carbon dioxide-philic groups on the film. For example: the first air conditioning film is generally used in the initial stage of air conditioning, but the humidity and the oxygen/carbon dioxide change at different speeds, and the humidity can change at a high speed, reaching 95 percent, but the oxygen is only 19 percent; when the humidity exceeds 92%, the second controlled atmosphere film needs to be adjusted to meet the humidity control requirement, and at the moment, the oxygen/carbon dioxide cannot meet the oxygen reduction requirement until the oxygen/carbon dioxide is adjusted to 15% of the oxygen control concentration of the first controlled atmosphere film. Therefore, it is better to control moisture and oxygen separately because of different change rates.

Wherein, the functions of the oxygen control film and the humidity control film are realized on the same air-conditioning film, and the functions specifically comprise: the modified atmosphere film has the functions of controlling humidity and controlling oxygen/carbon dioxide, and has oxygen transmittance, carbon dioxide transmittance and water vapor transmittance. The humidity sensor and the oxygen/carbon dioxide sensor are used for monitoring the gas components in the box, and the use of the modified atmosphere film is mainly adjusted by taking humidity as an index, and specific examples can be seen in table 3.

Table 3: controlled atmosphere film shift selection

Since the processes and functions of the refrigerator of this embodiment are basically corresponding to the embodiments, principles and examples of the apparatus shown in fig. 1, the descriptions of this embodiment are not detailed, and refer to the related descriptions in the embodiments, which are not described herein.

A large number of experiments prove that by adopting the technical scheme of the invention, according to the storage characteristics of fruits and vegetables, the moisture control film is adopted to adjust and control the water vapor generated by the evapotranspiration of the fruits and vegetables, and the oxygen control film is adopted to control the influence of the respiration of the fruits and vegetables on the concentrations of oxygen and carbon dioxide in the box, so that the gas components in the fruit and vegetable box can be accurately controlled to be in proper concentration values, and the fruit and vegetable fresh-keeping effect can be improved.

According to an embodiment of the present invention, there is also provided a modified atmosphere preservation method for a refrigerator, which corresponds to the refrigerator, as shown in fig. 6, which is a schematic flow chart of an embodiment of the method of the present invention. The modified atmosphere preservation method of the refrigerator can comprise the following steps: step S110 and step S120.

In step S110, collecting, by a collecting unit, environmental parameters in a containing cavity of the modified atmosphere box when the modified atmosphere box contains the article to be preserved; the environmental parameters include: humidity, and content of different constituent gases; for example: the acquisition unit can be arranged on the shell of the modified atmosphere box or in the modified atmosphere box to acquire environmental parameters such as humidity, gas components and the like in the modified atmosphere box. For example, the collection unit may include a humidity sensor, a gas sensor 4 (such as an oxygen sensor, a carbon dioxide sensor, etc.), and the like, the humidity sensor may be configured to collect humidity in the receiving cavity of the modified atmosphere box, the oxygen sensor may be configured to collect the content of oxygen in the receiving cavity of the modified atmosphere box, and the carbon dioxide sensor may be configured to collect the content of carbon dioxide in the receiving cavity of the modified atmosphere box.

At step S110, a regulating unit, such as the modified atmosphere structure 2, can be disposed on the housing of the modified atmosphere box or inside the modified atmosphere box to regulate the environmental parameters such as humidity, gas composition and content inside the modified atmosphere box through the humidity control film and the oxygen control film. For example, by the adjusting unit having at least two or more humidity control films and two or more oxygen control films, when the article to be preserved is accommodated in the modified atmosphere box, according to the environmental parameters in the accommodating cavity of the modified atmosphere box, the humidity in the accommodating cavity of the modified atmosphere box is adjusted by at least selecting different humidity control films in the two or more humidity control films and/or the contents of different component gases in the accommodating cavity of the modified atmosphere box are adjusted by selecting different oxygen control films in the two or more oxygen control films, so as to adjust the humidity in the accommodating cavity of the modified atmosphere box to the target storage humidity of the article to be preserved and adjust the contents of different gas components in the accommodating cavity of the modified atmosphere box to the target storage gas content of the article to be preserved. Wherein, the oxygen control film and the humidity control film are adopted to accurately adjust the gas components, and the humidity control film has moisture permeability and low oxygen/carbon dioxide permeability; the oxygen control film has oxygen/carbon dioxide permeability, but the moisture permeability is very low; by the classification control method, the precise control of each gas component can be realized. For example: the baffles 11 are arranged among the films in the adjusting unit, and when the air-conditioned fruit and vegetable box is used, namely the fruit and vegetable air-conditioned fresh-keeping box, the humidity, the oxygen concentration and the carbon dioxide concentration in the air-conditioned fruit and vegetable box can be detected by the gas sensor 4; according to the gas component value in the gas-regulating fruit and vegetable box, the gas concentration in the fruit and vegetable box can be regulated through the gas-regulating film regulating structure 2; preferably, different modified atmosphere films can be selected and used through the movement of the baffle plate 11 in the modified atmosphere film adjusting structure 2, so as to achieve the purpose of controlling the gas composition in the box.

In an alternative example, in the case that the adjusting unit includes at least two air chambers, the specific process of adjusting the contents of the different component gases in the accommodating chamber of the controlled atmosphere box by the adjusting unit through selecting different ones of the two or more oxygen control films in step S120 can be seen in the following exemplary description.

Referring to the flow diagram of an embodiment of the method of the present invention shown in fig. 7, in which the adjusting unit is used to adjust the contents of different component gases in the accommodating cavity of the controlled atmosphere box by selecting different ones of the two or more oxygen control films, further describing a specific process of adjusting the contents of different component gases in the accommodating cavity of the controlled atmosphere box by selecting different ones of the two or more oxygen control films in step S120, the specific process may include: step S210 and step S220.

Step S210, selecting corresponding oxygen control films from more than two oxygen control films according to the corresponding relation between the content of the gases with different components in the accommodating cavity of the air-conditioning box and the oxygen control films.

Table 1: oxygen control membrane gear selection

Step S220, for the selected oxygen control film, the baffle plates arranged adjacent to the selected oxygen control film are still arranged adjacent to the selected oxygen control film; for the unselected oxygen control film, the baffle plate arranged adjacent to the unselected oxygen control film moves to shield the unselected oxygen control film, so that the space of the baffle plate arranged adjacent to the unselected control film forms an airflow channel; the gas in the accommodating cavity of the gas-adjusting box is discharged through the channel and the selected oxygen-controlling film, so that the content of different gas components in the accommodating cavity of the gas-adjusting box can be adjusted.

In an alternative example, in the case that the adjusting unit includes at least two air chambers, the specific process of adjusting the humidity in the accommodating chamber of the air conditioning box by the adjusting unit through selecting different humidity control films of more than two humidity control films in step S120 can be seen in the following exemplary descriptions.

Referring to the flow diagram of an embodiment of the method of the present invention shown in fig. 8, in which the adjusting unit selects different humidity control films of the two or more humidity control films to adjust the humidity in the accommodating cavity of the controlled atmosphere box, further describing a specific process of adjusting the humidity in the accommodating cavity of the controlled atmosphere box by the adjusting unit selects different humidity control films of the two or more humidity control films in step S120, the specific process may include: step S310 and step S320.

Step S310, selecting corresponding humidity control films from more than two humidity control films according to the corresponding relation between the humidity in the accommodating cavity of the air conditioning box and the humidity control films.

Table 2: humidity control film gear selection

Step S320, for the selected humidity control film, the baffle plates which are arranged adjacent to the selected humidity control film are still arranged adjacent to the selected humidity control film; for the unselected humidity control films, the baffle plates arranged adjacent to the unselected humidity control films move to cover the unselected humidity control films, so that the spaces formed by the baffle plates arranged adjacent to the unselected control films after moving form airflow channels; the water vapor in the accommodating cavity of the air conditioning box is discharged after passing through the channel and the selected humidity control film, so that the humidity in the accommodating cavity of the air conditioning box is adjusted.

In another alternative example, in the case that the adjusting unit includes one air chamber, the specific process of adjusting the humidity in the accommodating chamber of the controlled atmosphere box by selecting different humidity control films from among the two or more humidity control films and/or adjusting the contents of different component gases in the accommodating chamber of the controlled atmosphere box by selecting different oxygen control films from among the two or more oxygen control films in step S120 of the adjusting unit can be referred to as the following exemplary description.

With reference to the flow diagram of an embodiment of the method shown in fig. 9, in which the adjusting unit adjusts the humidity in the accommodating cavity of the controlled atmosphere box by selecting different humidity control films of the two or more humidity control films, and/or the adjusting unit adjusts the contents of different component gases in the accommodating cavity of the controlled atmosphere box by selecting different oxygen control films of the two or more oxygen control films, further described is a specific process of adjusting the humidity in the accommodating cavity of the controlled atmosphere box by selecting different humidity control films of the two or more humidity control films, and/or adjusting the contents of different component gases in the accommodating cavity of the controlled atmosphere box by selecting different oxygen control films of the two or more oxygen control films in step S120, which may include: step S410 and step S420.

Step S410, selecting corresponding modified atmosphere films from more than two modified atmosphere films according to the corresponding relationship between the humidity and/or the content of the gases with different components in the accommodating cavity of the modified atmosphere box and the modified atmosphere films.

Table 3: controlled atmosphere film shift selection

Step S420, for the selected air-conditioned membrane, the baffle plates arranged adjacent to the selected air-conditioned membrane are still arranged adjacent to the selected air-conditioned membrane; for the unselected controlled atmosphere films, the baffle plates arranged adjacent to the unselected controlled atmosphere films move to shield the unselected controlled atmosphere films, so that the spaces formed by the baffle plates arranged adjacent to the unselected controlled films after moving form airflow channels; the air in the accommodating cavity of the air conditioning box is discharged through the channel and the selected air conditioning film, so that the humidity and/or the content of different air components in the accommodating cavity of the air conditioning box can be adjusted.

In an alternative embodiment, the method may further include: and (5) detecting the tightness of the modified atmosphere box.

The following further describes a specific process for detecting the sealing performance of the modified atmosphere box with reference to a schematic flow chart of an embodiment of the method of the invention shown in fig. 10, which may include: step S510 to step S530.

Step S510, detecting whether the atmosphere control box is sealed by a sealing switch disposed between the atmosphere control box body and the atmosphere control box drawer, for example, detecting whether the atmosphere control box body and the atmosphere control box drawer are sealed.

Step S520, if the atmosphere control box is in a sealed state, for example, the space between the atmosphere control box body and the atmosphere control box drawer is in a sealed state, displaying a first state and/or prompting a first message to open the adjusting unit when the atmosphere control box is in the sealed state, that is, allowing the adjusting unit to adjust at least the humidity in the accommodating cavity of the atmosphere control box to the target storage humidity of the item to be preserved and adjust the content of different gas components in the accommodating cavity of the atmosphere control box to the target storage gas content of the item to be preserved when the atmosphere control box is in the sealed state.

Step S530, if the controlled atmosphere box is not in a sealed state, for example, if the space between the controlled atmosphere box body and the controlled atmosphere box drawer is not in a sealed state, displaying a second state and/or prompting a second message.

In an alternative embodiment, the method may further include: determining different humidity control films in the more than two humidity control films according to a humidity difference value between the humidity in the accommodating cavity of the air conditioning box and the target storage humidity of the articles to be preserved by the control unit, so as to control the adjusting unit to adjust the humidity in the accommodating cavity of the air conditioning box by selecting the different humidity control films in the more than two humidity control films; and/or determining different oxygen control films in the more than two oxygen control films according to the gas content difference between the content of the different component gases in the accommodating cavity of the air-conditioning box and the target stored gas content of the article to be preserved by the control unit, so as to control the adjusting unit to adjust the content of the different component gases in the accommodating cavity of the air-conditioning box by selecting the different oxygen control films in the more than two oxygen control films. The gas with different components mainly refers to oxygen, so that the oxygen content in the modified atmosphere box is reasonably controlled, the reasonable preservation of the articles to be preserved is realized, and the preservation effect is improved.

Since the processing and functions implemented by the method of the present embodiment substantially correspond to the embodiments, principles and examples of the refrigerator, reference may be made to the related descriptions in the embodiments without being detailed in the description of the present embodiment, which is not described herein again.

A large number of experiments verify that by adopting the technical scheme of the embodiment, the oxygen control films with different air permeability and the humidity control films with different moisture permeability are adjusted and used by monitoring the gas concentration in the box, so that different air permeable channels are formed, the suitable storage environment of fruits and vegetables is maintained, and the fruit and vegetable fresh-keeping effect is improved.

In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.

The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An air-conditioning fresh-keeping device is characterized by comprising: the system comprises an air conditioning box, a collecting unit and a regulating unit; wherein the content of the first and second substances,

the air conditioning box is provided with a containing cavity, and the containing cavity is used for containing the articles to be preserved;

the collecting unit is used for collecting environmental parameters in the accommodating cavity of the air conditioning box; the environmental parameters include: humidity, and content of different constituent gases;

the adjusting unit is at least provided with more than two humidity control films and more than two oxygen control films and is used for adjusting the humidity in the accommodating cavity of the air conditioning box at least by selecting different humidity control films in the more than two humidity control films and/or adjusting the content of different component gases in the accommodating cavity of the air conditioning box at least by selecting different oxygen control films in the more than two oxygen control films so as to adjust the humidity in the accommodating cavity of the air conditioning box to the target storage humidity of the articles to be preserved and adjust the content of different gas components in the accommodating cavity of the air conditioning box to the target storage gas content of the articles to be preserved.

2. A modified atmosphere preservation apparatus according to claim 1, wherein the conditioning unit comprises: the air source comprises at least two air cavities, wherein the at least two air cavities comprise a first air cavity and a second air cavity which are arranged in a separated mode;

a frame with more than two layers of object placing areas is arranged in the first air cavity; a humidity control film and a baffle are adjacently arranged on each layer of the material area of the frame; a moving piece is arranged between each layer of the placement area of the frame and one pair of end parts of one baffle, and the one pair of end parts of one baffle can move along the moving piece to shield one piece of humidity control film adjacent to the one baffle;

a frame with more than two layers of object placing areas is arranged in the second air cavity; an oxygen control film and a baffle are adjacently arranged on each layer of the material area of the frame; and a moving member is arranged between each layer of the material area of the frame and one pair of end parts of one piece of the baffle, and the one pair of end parts of one piece of the baffle can move along the moving member to shield one piece of the oxygen control membrane adjacent to the moving member.

3. A modified atmosphere preservation apparatus according to claim 2, wherein,

the regulation unit adjusts the content of the different composition gases in the holding cavity of the gas regulating box through selecting the different oxygen control films in the more than two oxygen control films, and comprises:

selecting corresponding oxygen control films from more than two oxygen control films according to the corresponding relation between the content of different component gases in the accommodating cavity of the air conditioning box and the oxygen control films;

for the selected oxygen control film, the baffle arranged adjacent to the selected oxygen control film is still arranged adjacent to the selected oxygen control film; for the unselected oxygen control film, the baffle plate arranged adjacent to the unselected oxygen control film moves to shield the unselected oxygen control film, so that the space of the baffle plate arranged adjacent to the unselected control film forms an airflow channel; the gas in the accommodating cavity of the gas-regulating box is discharged through the channel and the selected oxygen-controlling film, so that the content of different gas components in the accommodating cavity of the gas-regulating box can be regulated;

and/or the presence of a gas in the gas,

the humidity in the holding cavity of the gas regulating box is adjusted through selecting the different humidity control films in the humidity control films more than two, including:

selecting corresponding humidity control films from more than two humidity control films according to the corresponding relation between the humidity in the accommodating cavity of the air conditioning box and the humidity control films;

for the selected humidity control film, the baffle arranged adjacent to the selected humidity control film is still arranged adjacent to the selected humidity control film; for the unselected humidity control films, the baffle plates arranged adjacent to the unselected humidity control films move to cover the unselected humidity control films, so that the spaces formed by the baffle plates arranged adjacent to the unselected control films after moving form airflow channels; the water vapor in the accommodating cavity of the air conditioning box is discharged after passing through the channel and the selected humidity control film, so that the humidity in the accommodating cavity of the air conditioning box is adjusted.

4. A modified atmosphere preservation apparatus according to claim 1, wherein the conditioning unit comprises: the air cavity is internally provided with a frame with more than two layers of object placing areas; a piece of air-conditioning film and a piece of baffle are adjacently arranged on each layer of the arrangement area of the frame; a moving piece is arranged between each layer of the placing area of the frame and one pair of end parts of one baffle plate, and the one pair of end parts of one baffle plate can move along the moving piece to shield one air-conditioning film adjacent to the moving piece; the modified atmosphere film comprises: humidity control films and oxygen control films.

5. A modified atmosphere preservation apparatus according to claim 4, wherein the adjusting unit adjusts the humidity in the housing cavity of the modified atmosphere box by selecting different ones of the two or more humidity control films and/or adjusts the content of different component gases in the housing cavity of the modified atmosphere box by selecting different ones of the two or more oxygen control films, comprises:

selecting corresponding modified atmosphere films from more than two modified atmosphere films according to the corresponding relationship between the humidity and/or the content of the gases with different components in the accommodating cavity of the modified atmosphere box and the modified atmosphere films;

for the selected modified atmosphere film, the baffle plates arranged adjacent to the selected modified atmosphere film are still arranged adjacent to the selected modified atmosphere film; for the unselected controlled atmosphere films, the baffle plates arranged adjacent to the unselected controlled atmosphere films move to shield the unselected controlled atmosphere films, so that the spaces formed by the baffle plates arranged adjacent to the unselected controlled films after moving form airflow channels; the air in the accommodating cavity of the air conditioning box is discharged through the channel and the selected air conditioning film, so that the humidity and/or the content of different air components in the accommodating cavity of the air conditioning box can be adjusted.

6. A modified atmosphere preservation device according to any one of claims 1 to 5, wherein the modified atmosphere box comprises: the air conditioning box comprises an air conditioning box body and an air conditioning box drawer;

7. A modified atmosphere preservation device according to claim 6, wherein the modified atmosphere box further comprises: a sealing switch;

the sealing switch is used for detecting whether the air conditioning box is in a sealed state or not; if the modified atmosphere box is in a sealed state, displaying a first state and/or prompting a first message to start the adjusting unit under the condition that the modified atmosphere box is in the sealed state; and if the modified atmosphere box is not in the sealed state, displaying a second state and/or prompting a second message.

8. A modified atmosphere preservation device according to any one of claims 1 to 5, further comprising: a control unit;

the control unit is used for determining different humidity control films in the more than two humidity control films according to a humidity difference value between the humidity in the accommodating cavity of the air conditioning box and the target storage humidity of the articles to be preserved, so that the control and adjustment unit adjusts the humidity in the accommodating cavity of the air conditioning box by selecting the different humidity control films in the more than two humidity control films; and/or the presence of a gas in the gas,

and determining different oxygen control films in the more than two oxygen control films according to the gas content difference between the content of the different component gases in the accommodating cavity of the air-conditioning box and the target stored gas content of the articles to be preserved, so that the control and adjustment unit adjusts the content of the different component gases in the accommodating cavity of the air-conditioning box by selecting the different oxygen control films in the more than two oxygen control films.

9. A refrigerator, characterized by comprising: an atmosphere control device according to any one of claims 1 to 8.

10. A modified atmosphere preservation method for a refrigerator according to claim 9, comprising:

collecting environmental parameters in the accommodating cavity of the air conditioning box through a collecting unit; the environmental parameters include: humidity, and content of different constituent gases;

the humidity in the accommodating cavity of the air conditioning box is adjusted by the adjusting unit at least by selecting different humidity control films in more than two humidity control films and/or adjusting the contents of different component gases in the accommodating cavity of the air conditioning box by selecting different oxygen control films in more than two oxygen control films, so that the humidity in the accommodating cavity of the air conditioning box is adjusted to the target storage humidity of the articles to be preserved, and the contents of different gas components in the accommodating cavity of the air conditioning box are adjusted to the target storage gas content of the articles to be preserved.

11. The modified atmosphere preservation method for a refrigerator according to claim 10, wherein,

under the condition that the regulating unit includes two at least air cavitys, through the regulating unit through selecting for use different accuse oxygen membrane in the accuse oxygen membrane more than two to adjust the content of the different composition gas in the holding cavity of gas regulating box, include:

and/or the presence of a gas in the gas,

under the condition that the regulating unit includes two at least air cavitys, through the humidity in the holding cavity of regulating box is adjusted to the regulating unit through selecting for use the different accuse wet film in the accuse wet film more than two, include:

12. A modified atmosphere preservation method for a refrigerator according to claim 10, wherein in case that the adjusting unit includes one air chamber, adjusting the humidity in the accommodating chamber of the modified atmosphere box by selecting different ones of the two or more humidity control films through the adjusting unit and/or adjusting the contents of different component gases in the accommodating chamber of the modified atmosphere box by selecting different ones of the two or more oxygen control films through the adjusting unit comprises:

13. A modified atmosphere preservation method for a refrigerator according to any one of claims 10 to 12, further comprising:

detecting whether the air conditioning box is in a sealed state or not;

if the modified atmosphere box is in a sealed state, displaying a first state and/or prompting a first message to start the adjusting unit under the condition that the modified atmosphere box is in the sealed state;

and if the modified atmosphere box is not in the sealed state, displaying a second state and/or prompting a second message.

14. A modified atmosphere preservation method for a refrigerator according to any one of claims 10 to 12, further comprising:

determining different humidity control films in the more than two humidity control films according to a humidity difference value between the humidity in the accommodating cavity of the air conditioning box and the target storage humidity of the articles to be preserved, so that the control and adjustment unit adjusts the humidity in the accommodating cavity of the air conditioning box by selecting the different humidity control films in the more than two humidity control films; and/or the presence of a gas in the gas,