CN111964349A

CN111964349A - Preservation control method and device, refrigerator, storage medium and processor

Info

Publication number: CN111964349A
Application number: CN202010709911.7A
Authority: CN
Inventors: 陈佳弘; 刘畅; 皮芳; 张冰洁; 程星光
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2020-11-20
Anticipated expiration: 2040-07-22
Also published as: CN111964349B

Abstract

The invention discloses a fresh-keeping control method, a fresh-keeping control device, a refrigerator, a storage medium and a processor, wherein the method comprises the following steps: monitoring the gas concentration and humidity inside the preservation box; gas concentrations, including: oxygen concentration and carbon dioxide concentration; and if the oxygen concentration is higher than the set oxygen concentration or the carbon dioxide concentration is lower than the set carbon dioxide concentration and/or if the humidity is lower than the set humidity, controlling the air conditioning film unit to be closed so as to perform second regulation on the gas concentration and the humidity inside the fresh keeping box under the condition that the air conditioning film unit is closed. The scheme of the invention can solve the problem that the fruits and vegetables cannot be ensured to be in a proper storage environment due to the low oxygen control and humidity control speed of the controlled atmosphere fresh keeping under the condition of more varieties of fruits and vegetables, and achieves the effect of improving the oxygen control and humidity control speed under the condition of more varieties of fruits and vegetables so as to ensure that the fruits and vegetables are in the proper storage environment.

Description

Preservation control method and device, refrigerator, storage medium and processor

Technical Field

The invention belongs to the technical field of preservation, and particularly relates to a preservation control method and device, a refrigerator, a storage medium and a processor, in particular to a control method and device for a quick air-conditioning preservation box of a refrigerator, the storage medium and the processor.

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, and the natural quality and edible safety of the fruits and vegetables are required to be maintained to the maximum extent. The quality of the fresh-keeping performance of the refrigerator serving as a refrigerator of a food cold storage chain is directly related to people's life relatives, the fresh-keeping effect of the cold storage 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. Therefore, the research on storing fruits and vegetables in the household refrigerator becomes a research hotspot in the field of preservation along with the promotion of various preservation refrigerators.

The controlled atmosphere preservation technology is a technology with a wide application range in the field of fruit and vegetable preservation, but some controlled atmosphere preservation technologies are slow in oxygen control speed and humidity control speed, and many types of fruits and vegetables are stored in a complex actual storage condition, so that the fruits and vegetables cannot be kept in a proper storage environment all the time.

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 solve the defects and provide a preservation control method, a preservation control device, a refrigerator, a storage medium and a processor, so as to solve the problem that the fruits and vegetables cannot be ensured to be in a proper preservation environment due to slow oxygen and humidity control speed of modified atmosphere preservation under the condition of more varieties of fruits and vegetables, and achieve the effect of improving the oxygen and humidity control speed under the condition of more varieties of fruits and vegetables so as to ensure that the fruits and vegetables are in the proper preservation environment.

The invention provides a fresh-keeping control method, which comprises the following steps: monitoring the gas concentration and humidity inside the preservation box; the preservation box is provided with an air-conditioning film unit and is used for carrying out first regulation on the concentration and the humidity of gas in the preservation box by utilizing the air-conditioning film unit under the condition that the air-conditioning film unit is opened; the gas concentration includes: oxygen concentration and carbon dioxide concentration; determining whether the oxygen concentration is higher than a set oxygen concentration or the carbon dioxide concentration is lower than a set carbon dioxide concentration, and determining whether the humidity is lower than a set humidity; and if the oxygen concentration is higher than a set oxygen concentration, or the carbon dioxide concentration is lower than a set carbon dioxide concentration, and/or if the humidity is lower than a set humidity, controlling the air-conditioning film unit to be closed so as to perform second regulation on the gas concentration and the humidity inside the fresh-keeping box under the condition that the air-conditioning film unit is closed.

Optionally, the modified atmosphere membrane unit comprises: the air-conditioning film, the guide rail and the baffle plate; the modified atmosphere film comprises: an oxygen control film and/or a moisture control film; wherein, the number of the oxygen control films is more than one sheet, and the number of the humidity control films is more than one sheet; the baffle can move along the guide rail to shield or open the air-conditioning film adjacent to the baffle; controlling the modified atmosphere membrane unit to close, comprising: and controlling the baffles in the air-conditioning film unit to enable a first baffle in the baffles to move to shield the oxygen control film adjacent to the first baffle, and/or enabling a second baffle in the baffles to move to shield the humidity control film adjacent to the second baffle so as to close the air-conditioning film unit.

Optionally, the method further comprises: after second adjustment of the gas concentration and humidity inside the crisper with the modified atmosphere unit closed, determining whether the oxygen concentration has not been higher than a set oxygen concentration or the carbon dioxide concentration has not been lower than a set carbon dioxide concentration, and determining whether the humidity has not been lower than a set humidity; and if the oxygen concentration is not higher than the set oxygen concentration or the carbon dioxide concentration is not lower than the set carbon dioxide concentration, and/or if the humidity is not lower than the set humidity, controlling the air-conditioning film unit to be started so as to recover to the first regulation of the gas concentration and the humidity in the preservation box by using the air-conditioning film unit.

Optionally, controlling the modified atmosphere membrane unit to be opened comprises: and in the case that the gas-adjusting film unit comprises a baffle plate, controlling the baffle plates in the gas-adjusting film unit to enable a first baffle plate in the baffle plates to move to not shield the oxygen control film adjacent to the first baffle plate and/or enable a second baffle plate in the baffle plates to move to not shield the humidity control film adjacent to the second baffle plate so as to open the gas-adjusting film unit.

Optionally, the first adjusting the gas concentration and humidity inside the fresh keeping box by using the modified atmosphere unit comprises: controlling the opening quantity of more than two different types of the modified atmosphere films, and realizing the first regulation of the gas concentration and the humidity in the preservation box by utilizing the modified atmosphere films opened in the more than two modified atmosphere films.

Optionally, the method further comprises: determining whether the crisper is in a closed state; if the preservation box is in a closed state, displaying a first state and/or prompting a first message so as to monitor the gas concentration and humidity inside the preservation box under the condition that the preservation box is in the closed state; and if the crisper is not in the closed state, displaying a second state and/or prompting a second message.

In another aspect, the present invention provides a preservation control apparatus, including: the monitoring unit is used for monitoring the gas concentration and the humidity inside the preservation box; the preservation box is provided with an air-conditioning film unit and is used for carrying out first regulation on the concentration and the humidity of gas in the preservation box by utilizing the air-conditioning film unit under the condition that the air-conditioning film unit is opened; the gas concentration includes: oxygen concentration and carbon dioxide concentration; a determination unit for determining whether the oxygen concentration is higher than a set oxygen concentration or the carbon dioxide concentration is lower than a set carbon dioxide concentration, and determining whether the humidity is lower than a set humidity; and the control unit is used for controlling the air-conditioning film unit to be closed if the oxygen concentration is higher than a set oxygen concentration or the carbon dioxide concentration is lower than a set carbon dioxide concentration and/or if the humidity is lower than a set humidity, so as to perform second regulation on the gas concentration and the humidity in the fresh-keeping box under the condition that the air-conditioning film unit is closed.

Optionally, the modified atmosphere membrane unit comprises: the air-conditioning film, the guide rail and the baffle plate; the modified atmosphere film comprises: an oxygen control film and/or a moisture control film; wherein, the number of the oxygen control films is more than one sheet, and the number of the humidity control films is more than one sheet; the baffle, comprising: a first baffle and/or a second baffle; a pair of end portions of the first shutter, which are movable along the guide rail to shield or open the oxygen control film adjacent thereto; a pair of end portions of the second shutter, which are movable along the guide rail to shield or open the humidity control film adjacent thereto; the control unit controls the air-conditioning membrane unit to be closed, and the control unit comprises: and controlling the baffles in the air-conditioning film unit to enable a first baffle in the baffles to move to shield the oxygen control film adjacent to the first baffle, and/or enabling a second baffle in the baffles to move to shield the humidity control film adjacent to the second baffle so as to close the air-conditioning film unit.

Optionally, the method further comprises: a determining unit, further used for determining whether the oxygen concentration is not higher than the set oxygen concentration or the carbon dioxide concentration is not lower than the set carbon dioxide concentration after the second adjustment is carried out on the gas concentration and the humidity in the fresh keeping box under the condition that the air modified film unit is closed, and determining whether the humidity is not lower than the set humidity; and the control unit is also used for controlling the opening of the modified atmosphere unit if the oxygen concentration is not higher than the set oxygen concentration or the carbon dioxide concentration is not lower than the set carbon dioxide concentration and/or if the humidity is not lower than the set humidity so as to restore to the first regulation of the gas concentration and the humidity in the preservation box by using the modified atmosphere unit.

Optionally, the control unit controls the gas-regulating membrane unit to be opened, and the method includes: and controlling the baffles in the air-conditioning film unit to enable a first baffle in the baffles to move to not shield the oxygen control film adjacent to the first baffle, and/or enabling a second baffle in the baffles to move to not shield the humidity control film adjacent to the second baffle to open the air-conditioning film unit.

Optionally, the control unit performs a first adjustment on the gas concentration and humidity inside the crisper by using the modified atmosphere unit, and includes: controlling the opening quantity of more than two different types of the modified atmosphere films, and realizing the first regulation of the gas concentration and the humidity in the preservation box by utilizing the modified atmosphere films opened in the more than two modified atmosphere films.

Optionally, the method further comprises: the determining unit is also used for determining whether the fresh-keeping box is in a closed state; the control unit is also used for displaying a first state and/or prompting a first message if the preservation box is in a closed state so as to monitor the gas concentration and the humidity inside the preservation box under the condition that the preservation box is in the closed state; and the control unit is also used for displaying a second state and/or prompting a second message if the preservation box is not in the closed state.

In accordance with the above apparatus, another aspect of the present invention provides a refrigerator, comprising: the fresh-keeping control device.

In accordance with the foregoing method, a further aspect of the present invention provides a storage medium, where the storage medium includes a stored program, and when the program runs, the apparatus where the storage medium is located is controlled to execute the above freshness protection control method.

In accordance with the foregoing method, a further aspect of the present invention provides a processor for executing a program, wherein the program executes the above-mentioned freshness control method.

According to the scheme, by monitoring the gas concentration in the box, when oxygen in the box is too high, the preservation box is sealed through the baffle structure, so that the box body is in a sealed state, and rapid gas adjustment is performed, so that the oxygen in the box is rapidly reduced to a preset value, carbon dioxide is increased to the preset value, and a proper gas environment is maintained in the box; the problem that the fruits and vegetables cannot be guaranteed to be in a proper storage environment due to the fact that the oxygen control speed of the controlled atmosphere preservation technology is low and the oxygen control speed and the humidity control speed of the controlled atmosphere preservation technology are low under the condition that the kinds of the fruits and vegetables are many is solved, and the effect that the fruits and vegetables can be guaranteed to be in the proper storage environment by improving the oxygen control speed and the humidity control speed under the condition that the kinds of the fruits and vegetables are many is achieved.

Further, according to the scheme of the invention, the humidity in the box is monitored, when the humidity is too low, the use of the humidity control film is regulated by sealing the preservation box according to the humidity content, the preservation box is sealed by the baffle structure, and quick air conditioning is carried out, so that the humidity in the box is quickly raised to a preset value, and the humidity in the box is maintained at a proper storage condition for fruits and vegetables; the problem that the fruits and vegetables cannot be guaranteed to be in a proper storage environment due to the fact that the humidity control speed of the controlled atmosphere preservation technology is low and the oxygen control speed and the humidity control speed of the controlled atmosphere preservation technology are low under the condition that the types of the fruits and vegetables are many is solved, and the effect that the fruits and vegetables can be guaranteed to be in the proper storage environment by improving the humidity control speed and improving the oxygen control speed and the humidity control speed under the condition that the types of the fruits and vegetables are many is achieved.

Furthermore, according to the scheme of the invention, the gas environment and the humidity in the box are quickly modified by monitoring the gas concentration and the humidity, so that the proper gas environment and the proper humidity are maintained in the box.

Further, according to the scheme of the invention, the oxygen, the carbon dioxide and the humidity are monitored, and the air environment and the humidity in the box are quickly modified, so that the oxygen concentration, the carbon dioxide concentration and the humidity in the box are maintained at respective set values.

Further, according to the scheme of the invention, after the quick air conditioning is finished, the oxygen control film and the humidity control film in the air conditioning film are switched and used through the baffle plate structure, and the proper storage environment of the preservation box is maintained through the oxygen control film and the humidity control film.

Therefore, according to the scheme of the invention, by monitoring the concentration and humidity of the gas in the box, when the oxygen in the box is too high or the carbon dioxide is too low, the box body is in a sealed state, so that the oxygen in the box is rapidly reduced to a preset value, and the carbon dioxide is increased to the preset value; when the humidity in the box is too low, the box body is in a sealed state, and the humidity in the box is quickly increased to a preset value; therefore, the problem that the fruits and vegetables cannot be guaranteed to be in the appropriate storage environment due to the fact that the oxygen control speed and the humidity control speed of the controlled atmosphere fresh-keeping are low under the condition that the types of the fruits and vegetables are more is solved, and the effect that the fruits and vegetables can be guaranteed to be in the appropriate storage environment by improving the oxygen control speed and the humidity control speed under the condition that the types of the fruits and vegetables are more 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 flow chart of an embodiment of a freshness control method of the present invention;

FIG. 2 is a schematic flow chart illustrating one embodiment of the method of the present invention exiting the second adjustment of the gas concentration and humidity inside the crisper;

FIG. 3 is a schematic flow chart illustrating one embodiment of monitoring the hermeticity of the crisper in the method of the present invention;

FIG. 4 is a schematic structural diagram of an embodiment of the freshness control device of the present invention;

FIG. 5 is a schematic view of a modified atmosphere crisper according to an embodiment of the refrigerator of the present invention;

FIG. 6 is a schematic structural diagram of an air-conditioned membrane adjusting structure of an embodiment of a refrigerator according to the present invention;

fig. 7 is a control flow chart of the quick modified atmosphere crisper of the embodiment of the refrigerator of the invention.

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

1-a preservation box body; 2-air-adjusting membrane adjusting structure; 3-preservation box drawer; 4-a gas sensor; 5-oxygen control film; 6-humidity control membrane; 7-a guide rail; 8-baffle (i.e. modified atmosphere membrane baffle); 102-a monitoring unit; 104-a determination unit; 106-control unit.

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 an embodiment of the present invention, a freshness-keeping control method is provided, as shown in fig. 1, which is a schematic flow chart of an embodiment of the method of the present invention. The fresh-keeping control method can be mainly used in the aspect of fresh-keeping control of the fresh-keeping box body 1 of the refrigerator, and the fresh-keeping control method of the fresh-keeping box body 1 of the refrigerator can comprise the following steps: step S10 to step S130.

At step S110, the gas concentration and humidity inside the fresh food box are monitored under the condition that the box body of the fresh food box (i.e., the box body formed by the fresh food box body 1 and the fresh food box drawer 3) is closed. The crisper is provided with a modified atmosphere unit (such as a modified atmosphere adjusting structure 2) which can be used for performing first adjustment (such as slow adjustment) on the gas concentration and humidity inside the crisper by using the modified atmosphere unit under the condition that the modified atmosphere unit is opened, namely, the gas concentration and humidity inside the crisper are adjusted by using the modified atmosphere unit. The gas concentration may include: oxygen concentration and carbon dioxide concentration.

For example: a crisper, which may comprise: the preservation box comprises a preservation box body 1 and a preservation box drawer 3. The preservation box body 1 is provided with a containing cavity which can be used for containing articles to be preserved. The preservation box body 1 monitors the humidity, the oxygen concentration and the carbon dioxide concentration inside the box through the gas sensor 4. The preservation box drawer 3 is arranged in the preservation box body 1 and can be pulled out or pushed in with the preservation box body 1; the preservation box drawer 3 is provided with an accommodating cavity, and under the condition that the preservation box drawer 3 is pushed into the preservation box body 1, a storage space for articles to be preserved is formed between the preservation box drawer 3 and the preservation box body 1.

At step S120, it is determined whether the oxygen concentration is higher than a set oxygen concentration or the carbon dioxide concentration is lower than a set carbon dioxide concentration, and it is determined whether the humidity is lower than a set humidity.

At step S130, if the oxygen concentration is higher than a set oxygen concentration, or the carbon dioxide concentration is lower than a set carbon dioxide concentration, and/or if the humidity is lower than a set humidity, the modified atmosphere unit is controlled to close, that is, the modified atmosphere unit is controlled to stop adjusting the gas concentration and humidity inside the fresh keeping box, so as to achieve a second adjustment (that is, rapid modified atmosphere) of the gas concentration and humidity inside the fresh keeping box by using the respiration of the to-be-preserved item stored inside the fresh keeping box when the modified atmosphere unit is closed. Namely, under the condition that the modified atmosphere film unit is closed, the preservation box is in a closed state, and second regulation (namely rapid modified atmosphere) on the gas concentration and the humidity inside the preservation box is realized under the condition that the preservation box is in the closed state, for example, under the condition that the preservation box is in the closed state, the self respiration of fruits and vegetables stored in the preservation box is utilized, so that the oxygen concentration inside the preservation box is reduced, the carbon dioxide concentration is increased, the humidity is increased, and the like.

Of course, if the oxygen concentration is not higher than the set oxygen concentration, or the carbon dioxide concentration is not lower than the set carbon dioxide concentration, and/or if the humidity is not lower than the set humidity, the modified atmosphere unit is kept turned on when the modified atmosphere unit is turned on, and the modified atmosphere unit is used to perform a first adjustment (e.g., slow adjustment) on the gas concentration and humidity inside the fresh-keeping box when the modified atmosphere unit is turned on, that is, the modified atmosphere unit is used to adjust the gas concentration and humidity inside the fresh-keeping box. Or, if the oxygen concentration is not higher than the set oxygen concentration, or the carbon dioxide concentration is not lower than the set carbon dioxide concentration, and/or if the humidity is not lower than the set humidity, controlling the start of the modified atmosphere unit if the modified atmosphere unit is not started, and performing a first adjustment (such as a slow adjustment) on the gas concentration and humidity inside the crisper by using the modified atmosphere unit if the modified atmosphere unit is started, that is, adjusting the gas concentration and humidity inside the crisper by using the modified atmosphere unit.

For example: the gas concentration of the preservation box can be monitored by the oxygen or carbon dioxide monitor, when the oxygen concentration is too high, the preservation box is sealed, so that the oxygen in the box is quickly reduced, the carbon dioxide is quickly raised, the aims of quickly reducing oxygen and improving carbon dioxide are fulfilled, the defects that the traditional modified atmosphere film is slow in modified atmosphere speed and low in reduced oxygen concentration are overcome, meanwhile, the modified atmosphere film can be flexibly controlled according to the type and quality of fruits and vegetables in the box, and the appropriate gas environment is maintained. Therefore, oxygen and carbon dioxide in the box are monitored through the gas sensor, and then the preservation box is sealed through the baffle 8 structure, so that gas components can be rapidly adjusted, and the problems of low air conditioning speed and insufficient oxygen reduction concentration are solved. The verification shows that in the rapid air-conditioning stage, the oxygen reduction concentration is reduced by 30 percent compared with the common air-conditioning film, and the carbon dioxide increase concentration is improved by 2 times compared with the common air-conditioning film; the oxygen reduction time is reduced by 3/4 compared with the common modified atmosphere film, and the carbon dioxide increasing time is reduced by 3/4 compared with the common modified atmosphere film.

For example: can pass through the humidity of humidity transducer monitoring crisper, cross when humidity is low through sealing the crisper, make the interior humidity of box rise fast, maintain the suitable storage condition of fruit vegetables with the interior humidity of box, solve the slow defect of traditional modified atmosphere membrane accuse humidity rate, can control the use of modified atmosphere membrane according to the kind and the quality flexibility of fruit vegetables in the box simultaneously, maintain suitable humidity. Like this, utilize humidity transducer survey box internal humidity, then according to the use of the content adjustment wet control membrane of humidity, seal the crisper through 8 structures of baffle, can improve humidity fast, solved the slow problem of wet speed of accuse. It is verified that the humidity rise time is reduced 1/4 compared with the common modified atmosphere film in the quick modified atmosphere stage.

From this, through the inside gas concentration of monitoring crisper, humidity etc, oxygen concentration is too high or carbon dioxide concentration is low excessively in gas concentration, when humidity is low excessively, close the modified atmosphere membrane unit so that the crisper is in the enclosed state, utilize the respiration of the interior storage object of crisper like fruit vegetables to realize the inside gas concentration of crisper under the enclosed state of crisper, the quick adjustment of humidity etc, compare in the slow speed regulation of modified atmosphere membrane unit, can realize the inside gas concentration of crisper more fast, the regulation of humidity, with the inside gas environment of crisper fast, humidity etc. maintain the suitable storage condition at the inside storage object of crisper, promote the fresh-keeping effect to the inside storage object of crisper, the use of people to the crisper has been made things convenient for.

Optionally, the modified atmosphere membrane unit may include: modified atmosphere film, guide rail 7 and baffle 8. The modified atmosphere film can comprise: an oxygen control membrane 5 and/or a moisture control membrane 6. The moisture control film 6 is used for transmitting water vapor, so that the fruits and vegetables can be evaporated and dehydrated during storage, and the fruits and vegetables can be rotten due to condensation caused by overhigh humidity in the box; the fruit and vegetable dehydration can be accelerated when the humidity in the box is too low, so that a film with a proper moisture permeability is needed to maintain the humidity in the fresh-keeping box to be stable at 92-97%. The oxygen control film 5 has the functions of reducing the oxygen content of the preservation box, improving the carbon dioxide content and preventing the fruits and vegetables from anaerobic respiration by permeating partial oxygen and carbon dioxide.

Wherein, the number of the oxygen control film 5 is more than one sheet, and the number of the humidity control film 6 is more than one sheet. The baffle plate 8 can move along the guide rail 7 to close or open the modified atmosphere film adjacent to the baffle plate. For example: the modified atmosphere membrane unit can comprise: the air cavity is internally provided with a frame with more than two layers of object placing areas; a piece of air-conditioned membrane and a piece of baffle plate 8 are adjacently arranged on each layer of the arrangement area of the frame; between each layer of the area of the frame and one pair of ends of one flap 8, there is a moving member (such as a guide rail 7), and one pair of ends of one flap 8 can move along the moving member to shield the adjacent one of the modified atmosphere films; the modified atmosphere film can comprise: a humidity control film 6 and an oxygen control film 5. Specifically, the baffle 8 may include: a first baffle and/or a second baffle; a pair of ends of the first baffle plate can move along the guide rail 7 to shield or open the oxygen control film 5 adjacent to the first baffle plate; and a pair of ends of the second baffle plate can move along the guide rail 7 to shield or open the humidity control film 6 adjacent to the second baffle plate.

Accordingly, the controlling the closing of the modified atmosphere unit in step S130 may include: and controlling the baffles 8 in the modified atmosphere unit to enable a first baffle in the baffles 8 to move to shield the oxygen control film 5 adjacent to the first baffle and/or enabling a second baffle in the baffles 8 to move to shield the humidity control film 6 adjacent to the second baffle to close the modified atmosphere unit.

Therefore, whether the controlled atmosphere film in the controlled atmosphere film unit is shielded or not is realized by moving the baffle, the opening or closing of the controlled atmosphere film unit is controlled, and the control mode is simple and convenient.

In an alternative embodiment, the method may further include: and exiting the process of carrying out second regulation on the gas concentration and the humidity inside the preservation box.

Referring to the flowchart of fig. 2, the specific process of exiting the second adjustment of the gas concentration and humidity inside the crisper will be further described, which includes: step S210 and step S230.

And step S210, after the gas concentration and the humidity inside the fresh keeping box are subjected to second adjustment under the condition that the air-conditioning film unit is closed, determining whether the oxygen concentration is not higher than a set oxygen concentration or the carbon dioxide concentration is not lower than a set carbon dioxide concentration, and determining whether the humidity is not lower than a set humidity.

Step S220, if the oxygen concentration is not higher than the set oxygen concentration, or the carbon dioxide concentration is not lower than the set carbon dioxide concentration, and/or if the humidity is not lower than the set humidity, controlling the start of the modified atmosphere unit to return to the state where the modified atmosphere unit is started, performing a first adjustment (e.g., slow adjustment) on the gas concentration and humidity inside the fresh-keeping box by using the modified atmosphere unit, that is, adjusting the gas concentration and humidity inside the fresh-keeping box by using the modified atmosphere unit.

Of course, if the oxygen concentration is still higher than the set oxygen concentration, or the carbon dioxide concentration is still lower than the set carbon dioxide concentration, and/or if the humidity is still lower than the set humidity, the controlled atmosphere unit is kept closed, and the second adjustment (i.e. quick controlled atmosphere) of the gas concentration and the humidity inside the preservation box is realized by continuously utilizing the respiration of the to-be-preserved articles stored in the preservation box under the condition that the controlled atmosphere unit is closed.

For example: by monitoring the gas concentration in the box, when the oxygen in the box is too high, the atmosphere control film of the preservation box is shielded, so that the box body is in a sealed state, the oxygen in the box is rapidly reduced to a preset value, and the carbon dioxide is increased to the preset value; and meanwhile, the humidity is monitored, so that the humidity is quickly increased to a preset value. After the quick air conditioning is finished, the proper storage environment of the preservation box is maintained through the oxygen control film and the humidity control film. Therefore, the gas sensor is used for monitoring oxygen, carbon dioxide and humidity, after the rapid air conditioning is finished, the air conditioning film is switched to use through the baffle plate structure, the defects that the air conditioning speed of the traditional air conditioning film is low and the oxygen reduction concentration is low are overcome, the defect that the humidity control speed of the traditional air conditioning film is low is overcome, meanwhile, the use of the air conditioning film can be flexibly controlled according to the types and the quality of fruits and vegetables in the box, and the proper gas environment and the proper humidity are maintained. The verification proves that the concentration of oxygen in the box can be maintained at 10% -15%, the concentration of carbon dioxide can be maintained at 3% -8%, and the humidity can be maintained at 92% -98%.

From this, through utilize the respiration of the interior storage article of crisper like fruit vegetables to realize the inside gas concentration of crisper, the quick adjustment of humidity etc. under the encapsulated situation at the crisper, realize the gas concentration to the crisper inside, the quick adjustment of humidity, later switch to utilizing the gas concentration of modified atmosphere membrane unit to the crisper inside, humidity etc. finely tune promptly slow speed adjusting, with the kind that can be according to fruit vegetables in the box and the nimble use of controlling modified atmosphere membrane unit of quality, maintain suitable gas environment and suitable humidity, be favorable to controlling the storage condition of the inside storage article of crisper more accurately, high efficiency and promote fresh-keeping effect reliably, can promote user experience.

Optionally, the modified atmosphere membrane unit may include: a modified atmosphere film, a guide rail 7 and a baffle plate 8; the modified atmosphere film can comprise: an oxygen control film 5 and/or a moisture control film 6; the number of the oxygen control films 5 is more than one, and the number of the humidity control films 6 is more than one; the baffle plate 8 can move along the guide rail 7 to close or open the modified atmosphere film adjacent to the baffle plate. For example: the modified atmosphere membrane unit can comprise: the air cavity is internally provided with a frame with more than two layers of object placing areas; a piece of air-conditioned membrane and a piece of baffle plate 8 are adjacently arranged on each layer of the arrangement area of the frame; between each layer of the area of the frame and one pair of ends of one flap 8, there is a moving member (such as a guide rail 7), and one pair of ends of one flap 8 can move along the moving member to shield the adjacent one of the modified atmosphere films; the modified atmosphere film can comprise: a humidity control film 6 and an oxygen control film 5. Wherein, the step S220 of controlling the opening of the modified atmosphere film unit may include: in the case where the modified atmosphere unit includes a baffle plate 8, the baffle plates 8 in the modified atmosphere unit are controlled such that a first baffle plate in the baffle plates 8 moves to uncover the oxygen control film 5 adjacent thereto and/or a second baffle plate in the baffle plates 8 moves to uncover the moisture control film 6 adjacent thereto to effect opening of the modified atmosphere unit.

Optionally, the first adjusting the gas concentration and humidity inside the fresh food box by using the modified atmosphere unit in step S220 may include: and under the condition that the modified atmosphere film unit is opened, controlling the opening quantity of more than two different types of modified atmosphere films, and realizing first adjustment on the gas concentration and the humidity in the preservation box by utilizing the modified atmosphere films opened in the more than two modified atmosphere films. That is, the modified atmosphere unit performing the first adjustment of the gas concentration and humidity inside the fresh food box by using the modified atmosphere unit may include: the air-conditioning film unit realizes the first regulation of the gas concentration and the humidity inside the preservation box by controlling the opening or closing of the oxygen control film and the humidity control film and the opening amount or the closing amount. For example: the modified atmosphere film regulating structure 2 can comprise: the oxygen control film 5, the humidity control film 6, the guide rail 7 and the baffle 8 can be selectively controlled by the movement of the air-adjusting film baffle 8 according to the gas component value in the box, so as to achieve the purpose of controlling the gas components in the box.

Wherein, controlling the opening number of the more than two different types of the modified atmosphere films can comprise: the average gas concentration and/or the average humidity inside the fresh-keeping box can be determined according to the types of the articles to be kept fresh stored in the fresh-keeping box and the target gas concentration and/or the target humidity of each article to be kept fresh; furthermore, the opening type and/or the opening quantity of the modified atmosphere films corresponding to the average gas concentration and/or the average humidity inside the crisper in the modified atmosphere film unit can be determined according to the corresponding relationship among the set gas concentration, humidity, opening type of the modified atmosphere films and/or the opening quantity of each modified atmosphere film; furthermore, when the modified atmosphere film unit is opened, the modified atmosphere film unit can be controlled according to the opening number of more than two different types of modified atmosphere films corresponding to the average gas concentration and/or the average humidity in the preservation box, so that the opening number of more than two different types of modified atmosphere films can be controlled.

For example: the gas membrane unit can be through selecting for use the humidity in the holding cavity of the crisper of the different accuse wet membrane regulation in the accuse wet membrane more than two and/or the gas membrane unit adjusts the content of the gaseous different composition in the holding cavity of the crisper through selecting for use the different accuse oxygen membrane in the accuse oxygen membrane more than two, specifically can 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 preservation box and the modified atmosphere films. Further, for the selected modified atmosphere film, the baffle 8 disposed adjacent to the selected modified atmosphere film is still disposed adjacent to the selected modified atmosphere film. For the unselected controlled atmosphere films, the baffle plates 8 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 8 arranged adjacent to the unselected controlled films after moving form airflow channels; the gas in the containing cavity of the preservation box is discharged through the channel and the selected modified atmosphere film, so that the humidity in the containing cavity of the preservation box and the content of different gas components can be adjusted.

From this, finely tune the inside storage condition of crisper through utilizing the gas conditioning membrane, can realize the control to the inside storage condition of crisper more accurately, more reliably, can promote fresh-keeping effect, promote user experience better.

In an alternative embodiment, the method may further include: and monitoring the process of the sealing performance of the preservation box.

The following further describes a specific process for monitoring the tightness of the fresh food box with reference to a schematic flow chart of an embodiment of monitoring the tightness of the fresh food box in the method of the present invention shown in fig. 3, and may include: step S310 to step S30.

Step S310, it is determined whether the crisper is in a closed state.

Step S320, if the crisper is in the closed state, displaying a first state and/or prompting a first message to monitor the gas concentration and humidity inside the crisper under the condition that the crisper is in the closed state.

And step S30, if the fresh-keeping box is not in the closed state, displaying a second state and/or prompting a second message.

For example: the method comprises the following steps that a user starts a controlled atmosphere function according to the requirement, whether a box body of the controlled atmosphere preservation box (namely, the box body formed by a preservation box body 1 and a preservation box drawer 3) is sealed or not is monitored, and if the box body of the controlled atmosphere preservation box (namely, the box body formed by the preservation box body 1 and the preservation box drawer 3) is sealed, controlled atmosphere operation is continuously executed; otherwise, after the user is prompted to close the controlled atmosphere preservation box, the user returns to continuously monitor whether the box body of the controlled atmosphere preservation box (namely the box body formed by the preservation box body 1 and the preservation box drawer 3) is sealed or not. If sealed switch, can select for use pilot lamp and/or prompting device, if can show first state if the pilot lamp is bright and/or the first message of suggestion if the preservation box is unsealed under the circumstances that preservation box drawer 3 moved out preservation box body 1, can show the second state if the pilot lamp goes out and/or the suggestion second message is sealed if the suggestion preservation box under the circumstances that preservation box drawer 3 pushed into preservation box body 1.

Therefore, the sealing switch is arranged between the preservation box body 1 and the preservation box drawer 3 of the preservation box, so that whether the preservation box body 1 and the preservation box drawer 3 are in a closed state or not can be monitored, the air-conditioning film unit is started to adjust the environmental parameters in the accommodating cavity of the preservation box under the condition that the preservation box body 1 and the preservation box drawer 3 are in the closed state, the adjusting effect is improved, and the energy-saving property is good; in addition, whether be in the state of closing between sealed switch monitoring crisper body 1 and the crisper drawer 3, also convenience of customers in time knows whether be in the state of closing between crisper body 1 and the crisper drawer 3, and the hommization is better.

Through a large number of tests, the technical scheme of the embodiment is adopted, the fresh-keeping box is sealed through the baffle structure by monitoring the gas concentration in the box when the oxygen in the box is too high, so that the box body is in a sealed state, and rapid air adjustment is performed, so that the oxygen in the box is rapidly reduced to a preset value, the carbon dioxide is increased to the preset value, and a proper gas environment is maintained in the box; the problem that the fruits and vegetables cannot be guaranteed to be in a proper storage environment due to the fact that the oxygen control speed of the controlled atmosphere preservation technology is low and the oxygen control speed and the humidity control speed of the controlled atmosphere preservation technology are low under the condition that the kinds of the fruits and vegetables are many is solved, and the effect that the fruits and vegetables can be guaranteed to be in the proper storage environment by improving the oxygen control speed and the humidity control speed under the condition that the kinds of the fruits and vegetables are many is achieved.

According to the embodiment of the invention, the invention also provides a fresh-keeping control device corresponding to the fresh-keeping control method. Referring to fig. 4, a schematic diagram of an embodiment of the apparatus of the present invention is shown. This fresh-keeping controlling means mainly can be used in the fresh-keeping control aspect of the fresh-keeping box of refrigerator, and the fresh-keeping controlling means of the fresh-keeping box of refrigerator can include: a monitoring unit 102, a determination unit 104 and a control unit 106.

In an alternative example, the monitoring unit 102 may be used to monitor the gas concentration and humidity inside the crisper when the box of the crisper (i.e., the box formed by the crisper body 1 and the crisper drawer 3) is closed. The crisper is provided with a modified atmosphere unit (such as a modified atmosphere adjusting structure 2) which can be used for performing first adjustment (such as slow adjustment) on the gas concentration and humidity inside the crisper by using the modified atmosphere unit under the condition that the modified atmosphere unit is opened, namely, the gas concentration and humidity inside the crisper are adjusted by using the modified atmosphere unit. The gas concentration may include: oxygen concentration and carbon dioxide concentration. The specific function and processing of the monitoring unit 102 are shown in step S10.

In an alternative example, the determining unit 104 may be configured to determine whether the oxygen concentration is higher than a set oxygen concentration or the carbon dioxide concentration is lower than a set carbon dioxide concentration, and determine whether the humidity is lower than a set humidity. The specific function and processing of the determination unit 104 are referred to in step S120.

In an alternative example, the control unit 106 may be configured to control the modified atmosphere unit to close if the oxygen concentration is higher than a set oxygen concentration, or the carbon dioxide concentration is lower than a set carbon dioxide concentration, and/or if the humidity is lower than a set humidity, that is, to control the modified atmosphere unit to stop adjusting the gas concentration and humidity inside the fresh food box, so as to perform a second adjustment (i.e., fast modified atmosphere) on the gas concentration and humidity inside the fresh food box by using the respiration of the to-be-preserved item stored inside the fresh food box when the modified atmosphere unit is closed. Namely, under the condition that the modified atmosphere film unit is closed, the preservation box is in a closed state, and second regulation (namely rapid modified atmosphere) on the gas concentration and the humidity inside the preservation box is realized under the condition that the preservation box is in the closed state, for example, under the condition that the preservation box is in the closed state, the self respiration of fruits and vegetables stored in the preservation box is utilized, so that the oxygen concentration inside the preservation box is reduced, the carbon dioxide concentration is increased, the humidity is increased, and the like. The specific function and processing of the control unit 106 are shown in step S130.

For example: the gas concentration of the preservation box can be monitored by the oxygen or carbon dioxide monitor, when the oxygen concentration is too high, the preservation box is sealed, so that the oxygen in the box is quickly reduced, the carbon dioxide is quickly raised, the aims of quickly reducing oxygen and improving carbon dioxide are fulfilled, the defects that the traditional modified atmosphere film is slow in modified atmosphere speed and low in reduced oxygen concentration are overcome, meanwhile, the modified atmosphere film can be flexibly controlled according to the type and quality of fruits and vegetables in the box, and the appropriate gas environment is maintained. Therefore, the oxygen and the carbon dioxide in the box are monitored through the gas sensor, and then the preservation box is sealed through the baffle structure, so that the gas components can be quickly adjusted, and the problems of low gas adjusting speed and insufficient oxygen reduction concentration are solved. The verification shows that in the rapid air-conditioning stage, the oxygen reduction concentration is reduced by 30 percent compared with the common air-conditioning film, and the carbon dioxide increase concentration is improved by 2 times compared with the common air-conditioning film; the oxygen reduction time is reduced by 3/4 compared with the common modified atmosphere film, and the carbon dioxide increasing time is reduced by 3/4 compared with the common modified atmosphere film.

For example: can pass through the humidity of humidity transducer monitoring crisper, cross when humidity is low through sealing the crisper, make the interior humidity of box rise fast, maintain the suitable storage condition of fruit vegetables with the interior humidity of box, solve the slow defect of traditional modified atmosphere membrane accuse humidity rate, can control the use of modified atmosphere membrane according to the kind and the quality flexibility of fruit vegetables in the box simultaneously, maintain suitable humidity. Like this, utilize humidity transducer survey box internal humidity, then according to the use of the content adjustment wet control membrane of humidity, seal the crisper through the baffle structure, can improve humidity fast, solved the slow problem of wet speed of accuse. It is verified that the humidity rise time is reduced 1/4 compared with the common modified atmosphere film in the quick modified atmosphere stage.

Wherein, the number of the oxygen control film 5 is more than one sheet, and the number of the humidity control film 6 is more than one sheet. The baffle plate 8 can move along the guide rail 7 to close or open the modified atmosphere film adjacent to the baffle plate. For example: the modified atmosphere membrane unit can comprise: the air cavity is internally provided with a frame with more than two layers of object placing areas; a piece of air-conditioned membrane and a piece of baffle plate 8 are adjacently arranged on each layer of the arrangement area of the frame; between each layer of the area of the frame and one pair of ends of one flap 8, there is a moving member (such as a guide rail 7), and one pair of ends of one flap 8 can move along the moving member to shield the adjacent one of the modified atmosphere films; the modified atmosphere film can comprise: a humidity control film 6 and an oxygen control film 5.

Accordingly, the controlling unit 106 controls the closing of the modified atmosphere unit, and may include: the control unit 106 may be further configured to control the baffles 8 of the modified atmosphere unit, so that a first baffle of the baffles 8 moves to shield the oxygen control film 5 adjacent to the first baffle, and/or a second baffle of the baffles 8 moves to shield the humidity control film 6 adjacent to the second baffle, so as to close the modified atmosphere unit.

In an alternative embodiment, the method may further include: the process of performing the second adjustment on the gas concentration and the humidity inside the preservation box is exited, and the process may specifically be as follows:

the determination unit 104 may be further configured to determine whether the oxygen concentration has not been higher than a set oxygen concentration or the carbon dioxide concentration has not been lower than a set carbon dioxide concentration and determine whether the humidity has not been lower than a set humidity after performing a second adjustment of the gas concentration and the humidity inside the crisper with the modified atmosphere unit turned off. The specific function and processing of the determination unit 104 are also referred to in step S210.

The control unit 106 may be further configured to control the modified atmosphere unit to turn on if the oxygen concentration is not higher than the set oxygen concentration or the carbon dioxide concentration is not lower than the set carbon dioxide concentration, and/or if the humidity is not lower than the set humidity, so as to return to a state where the modified atmosphere unit turns on, and perform a first adjustment (e.g., slow adjustment) on the gas concentration and humidity inside the fresh-keeping box by using the modified atmosphere unit, that is, adjust the gas concentration and humidity inside the fresh-keeping box by using the modified atmosphere unit. The specific function and processing of the control unit 106 are also referred to in step S220.

Optionally, the modified atmosphere membrane unit may include: modified atmosphere film, guide rail 7 and baffle 8. The modified atmosphere film can comprise: an oxygen control membrane 5 and/or a moisture control membrane 6. The number of the oxygen control films 5 is more than one, and the number of the humidity control films 6 is more than one. The baffle plate 8 can move along the guide rail 7 to close or open the modified atmosphere film adjacent to the baffle plate. For example: the modified atmosphere membrane unit can comprise: the air cavity is internally provided with a frame with more than two layers of object placing areas; a piece of air-conditioned membrane and a piece of baffle plate 8 are adjacently arranged on each layer of the arrangement area of the frame; between each layer of the area of the frame and one pair of ends of one flap 8, there is a moving member (such as a guide rail 7), and one pair of ends of one flap 8 can move along the moving member to shield the adjacent one of the modified atmosphere films; the modified atmosphere film can comprise: a humidity control film 6 and an oxygen control film 5. The control unit 106 controls the opening of the modified atmosphere film unit, and may include: the control unit 106 may be further configured to control the baffles 8 in the modified atmosphere unit, so that a first baffle of the baffles 8 moves to uncover the oxygen control film 5 adjacent to the first baffle, and/or a second baffle of the baffles 8 moves to uncover the humidity control film 6 adjacent to the second baffle, so as to open the modified atmosphere unit.

Alternatively, the first adjustment of the gas concentration and humidity inside the crisper by the control unit 106 using the modified atmosphere unit may include: the control unit 106 may be further configured to control the opening number of the two or more different types of modified atmosphere films when the modified atmosphere film unit is opened, and realize the first adjustment of the gas concentration and the humidity inside the fresh food box by using the modified atmosphere films opened in the two or more modified atmosphere films. That is, the modified atmosphere unit performing the first adjustment of the gas concentration and humidity inside the fresh food box by using the modified atmosphere unit may include: the air-conditioning film unit realizes the first regulation of the gas concentration and the humidity inside the preservation box by controlling the opening or closing of the oxygen control film and the humidity control film and the opening amount or the closing amount. For example: the modified atmosphere film regulating structure 2 can comprise: the oxygen control film 5, the humidity control film 6, the guide rail 7 and the baffle 8 can be selectively controlled by the movement of the air-adjusting film baffle 8 according to the gas component value in the box, so as to achieve the purpose of controlling the gas components in the box.

In an alternative embodiment, the method may further include: the process for monitoring the sealing performance of the preservation box can be specifically as follows:

the determination unit 104 may also be used to determine whether the crisper is in a closed state. The specific function and processing of the determination unit 104 are also referred to in step S310.

The control unit 106 may be further configured to display a first status and/or prompt a first message if the crisper is in the closed state to monitor the gas concentration and humidity inside the crisper if the crisper is in the closed state. The determination unit 104 may also be used to determine whether the crisper is in a closed state. The specific functions and processes of the control unit 106 are also referred to in step S320.

The control unit 106 may be further configured to display a second status and/or prompt a second message if the crisper is not in the closed state. The specific function and processing of the control unit 106 are also referred to in step S30.

Since the processes and functions implemented by the apparatus of this embodiment substantially correspond to the embodiments, principles and examples of the method shown in fig. 1 to 3, the description of this embodiment is not detailed, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.

Through a large number of tests, the technical scheme of the invention is adopted, the humidity in the box is monitored, when the humidity is too low, the humidity control film is sealed by the sealed preservation box, the use of the humidity control film is adjusted according to the content of the humidity, the preservation box is sealed by the baffle structure, and the quick air conditioning is carried out, so that the humidity in the box is quickly increased to a preset value, and the humidity in the box is maintained at the appropriate storage condition of fruits and vegetables; the problem that the fruits and vegetables cannot be guaranteed to be in a proper storage environment due to the fact that the humidity control speed of the controlled atmosphere preservation technology is low and the oxygen control speed and the humidity control speed of the controlled atmosphere preservation technology are low under the condition that the types of the fruits and vegetables are many is solved, and the effect that the fruits and vegetables can be guaranteed to be in the proper storage environment by improving the humidity control speed and improving the oxygen control speed and the humidity control speed under the condition that the types of the fruits and vegetables are many is achieved.

According to the embodiment of the invention, the refrigerator corresponding to the fresh-keeping control device is also provided. The refrigerator may include: the fresh-keeping control device.

The modified atmosphere preservation technology is based on the original refrigeration, and controls the parameters of temperature, humidity, carbon dioxide, oxygen concentration, ethylene concentration and the like in the storage environment to inhibit the respiration of fruits and vegetables, delay the metabolic process, enable the fruits and vegetables to be in a dormant state, prevent the fruits and vegetables from rotting and deteriorating and prolong the storage period. 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 less applied to refrigerator products.

Controlled atmosphere storage can be classified into continuous Controlled Atmosphere (CA) and single controlled atmosphere (MCA) depending on the accuracy of control of gas composition. Continuous modified atmosphere (CA) is performed by artificial means on all biological gases including O₂、CO₂Ethylene 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 the 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.

Some primary air-conditioning Methods (MA) mainly utilize a high-molecular air-conditioning film (air separation film) and combine the respiration and transpiration of fruits and vegetables to achieve the effect of adjusting the gas components of the preservation box. However, the oxygen control speed of the air-conditioning mode is very slow, the varieties of fruits and vegetables are more, the actual storage condition is complex, and the fruits and vegetables cannot be guaranteed to be in a proper storage environment all the time.

In an optional embodiment, the invention provides a quick controlled atmosphere preservation box of a refrigerator, by monitoring the gas concentration in the box, when oxygen in the box is too high, a controlled atmosphere film of the preservation box is shielded, the box body is in a sealed state, the oxygen in the box is quickly reduced to a preset value, and carbon dioxide is increased to the preset value; and meanwhile, the humidity is monitored, so that the humidity is quickly increased to a preset value. After the quick air conditioning is finished, the proper storage environment of the preservation box is maintained through the oxygen control film and the humidity control film.

Optionally, the gas concentration of the preservation box can be monitored by an oxygen or carbon dioxide monitor, when the oxygen concentration is too high, the preservation box is sealed, so that oxygen in the box is quickly reduced, carbon dioxide is quickly increased, the aims of quickly reducing oxygen and improving carbon dioxide are fulfilled, the defects that the traditional modified atmosphere film is slow in modified atmosphere speed and low in reduced oxygen concentration are overcome, meanwhile, the modified atmosphere film can be flexibly controlled to be used according to the types and quality of fruits and vegetables in the box, and a suitable gas environment is maintained.

Therefore, according to the scheme of the invention, the oxygen and the carbon dioxide in the box are monitored by the gas sensor, and then the preservation box is sealed by the baffle plate structure, so that the gas components can be quickly adjusted, and the problems of low gas adjusting speed and insufficient oxygen reduction concentration are solved. The verification shows that in the rapid air-conditioning stage, the oxygen reduction concentration is reduced by 30 percent compared with the common air-conditioning film, and the carbon dioxide increase concentration is improved by 2 times compared with the common air-conditioning film; the oxygen reduction time is reduced by 3/4 compared with the common modified atmosphere film, and the carbon dioxide increasing time is reduced by 3/4 compared with the common modified atmosphere film.

Optionally, the humidity of the preservation box can be monitored through the humidity sensor, when the humidity is too low, the humidity in the preservation box is quickly increased by sealing the preservation box, the humidity in the preservation box is maintained under the suitable storage condition of the fruits and vegetables, the defect that the humidity control speed of the traditional air-conditioned film is slow is overcome, and meanwhile, the use of the air-conditioned film can be flexibly controlled according to the types and the quality of the fruits and vegetables in the preservation box, and the suitable humidity is maintained.

Therefore, according to the scheme of the invention, the humidity in the box is measured by using the humidity sensor, the humidity control film is used according to the humidity content, and the preservation box is sealed by the baffle plate structure, so that the humidity can be rapidly improved, and the problem of low humidity control speed is solved. It is verified that the humidity rise time is reduced 1/4 compared with the common modified atmosphere film in the quick modified atmosphere stage.

Therefore, according to the scheme of the invention, the gas sensor is used for monitoring oxygen, carbon dioxide and humidity, and after the rapid gas regulation is finished, the gas regulation membrane is switched to use through the baffle plate structure, so that the defects of slow gas regulation speed and low oxygen reduction concentration of the traditional gas regulation membrane are overcome, the defect of slow humidity control speed of the traditional gas regulation membrane is also overcome, meanwhile, the use of the gas regulation membrane can be flexibly controlled according to the types and quality of fruits and vegetables in the box, and the proper gas environment and proper humidity are maintained. The verification proves that the concentration of oxygen in the box can be maintained at 10% -15%, the concentration of carbon dioxide can be maintained at 3% -8%, and the humidity can be maintained at 92% -98%.

In a specific embodiment, a specific implementation process of the scheme of the present invention can be exemplarily described with reference to examples shown in fig. 5 to 7.

FIG. 5 is a schematic view of an embodiment of a modified atmosphere crisper. As shown in fig. 5, the modified atmosphere crisper can comprise: the preservation box comprises a preservation box body 1 and a preservation box drawer 3, wherein an air adjusting film adjusting structure 2 and a gas sensor 4 are arranged on the preservation box body 1. The air-conditioning film adjusting structure 2 can be arranged at any suitable position on the upper surface of the preservation box body 1, and preferably can be arranged at the middle position of the upper surface of the preservation box body 1. The preservation box body 1 is of a rectangular annular structure, the preservation box drawer 3 is of a rectangular accommodating structure, and the preservation box drawer 3 can be arranged inside the preservation box body 1; preferably, the crisper body 1 and the crisper drawer 3 can form a drawer-shaped structure, and the crisper drawer 3 can be arranged in the crisper body 1 in a drawing manner. The preservation box drawer 3 is provided with an accommodating cavity, and fruits and vegetables can be accommodated in the accommodating cavity of the preservation box drawer 3. For example: the advantage of this structure in the aspect of fresh-keeping is that sealing performance is good, only one contact surface between crisper drawer 3 and the box body (being crisper body 1), can maintain the interior high humid ambience of hypoxemia of box. The preservation box body 1 monitors the humidity, the oxygen concentration and the carbon dioxide concentration inside the box through the gas sensor 4.

Fig. 6 is a schematic structural diagram of an embodiment of a modified atmosphere film conditioning structure. As shown in fig. 6, the modified atmosphere film regulating structure 2 may include: the oxygen control film 5, the humidity control film 6, the guide rail 7 and the baffle 8 can be selectively controlled by the movement of the air-adjusting film baffle 8 according to the gas component value in the box, so as to achieve the purpose of controlling the gas components in the box.

Optionally, the moisture control film 6 can transmit water vapor, so that the fruits and vegetables can be evaporated and dehydrated during storage, and the fruits and vegetables can be rotten due to condensation caused by overhigh humidity in the box; the fruit and vegetable dehydration can be accelerated when the humidity in the box is too low, so that a film with a proper moisture permeability is needed to maintain the humidity in the fresh-keeping box to be stable at 92-97%.

Optionally, the oxygen control film 5 is used for transmitting part of oxygen and carbon dioxide, so as to reduce the oxygen content of the preservation box, increase the carbon dioxide content and prevent the fruits and vegetables from breathing without oxygen.

For example: the oxygen control film, the humidity control film, or the air-conditioning film formed by the oxygen control film and the humidity control film together can comprise: two layers of splints, and an oxygen control film or a moisture control film or an air conditioning film clamped between the two layers of splints. A plurality of air holes can be arranged on each layer of the clamping plate. When the modified atmosphere preservation box is used, namely the preservation box body 1, the humidity, the oxygen concentration and the carbon dioxide concentration in the modified atmosphere preservation box can be monitored through the gas sensor 4. According to the gas component value in the gas-adjusting preservation box, the gas concentration in the preservation box can be adjusted through the gas-adjusting film adjusting structure 2. Preferably, different modified atmosphere films can be selected and used through the movement of the baffle plate 8 in the modified atmosphere film adjusting structure 2, so as to achieve the purpose of controlling the gas composition in the box.

For example: the modified atmosphere membrane unit can comprise: 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 member is arranged between each layer of the placing area of the frame and one pair of end parts of one piece of baffle plate 8, and the pair of end parts of the one piece of baffle plate 8 can move along the moving member to shield the air-adjusting film adjacent to the moving member; the modified atmosphere film comprises: a humidity control film 6 and an oxygen control film 5. 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 7. The number of guide rails 7 may be a pair, and two guide rails 7 of a pair of guide rails 7 are arranged relatively in parallel at a set of opposite edges of the apron 8, such as the short sides of the apron 8. 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.

Fig. 7 is a control flow chart of the quick modified atmosphere crisper of the embodiment of the refrigerator of the invention. As shown in fig. 7, the control process of the modified atmosphere crisper of the refrigerator may include:

step 1, a user starts a quick air conditioning function according to the requirement.

Step 2, monitoring whether the crisper drawer 3 is closed, and if the crisper drawer 3 is closed, executing the step 3; otherwise, prompting the user to close the preservation box, and then returning to the step 2 to continue monitoring.

And 3, starting quick air conditioning, closing the air conditioning damper 8, and then respectively executing the steps 41 to 43 and the steps 51 to 53.

And 41, resetting the baffle 8 of the oxygen control film 5, namely closing the oxygen control film 5.

And step 42, acquiring the oxygen concentration monitored by the oxygen sensor, and/or acquiring the carbon dioxide concentration monitored by the carbon dioxide sensor.

Step 43, determining whether the oxygen concentration is in the range of 6% to 12% (i.e., determining whether the oxygen concentration is greater than or equal to 6% and less than or equal to 12%), or determining whether the carbon dioxide concentration is greater than or equal to 5%. If so, the baffle 8 of the oxygen control film 5 is opened, the user opens the preservation box, and the quick air conditioning is finished. Otherwise, return to step 41.

And 51, resetting the baffle 8 of the humidity control film 6 even if the humidity control film 6 is in a closed state.

And step 52, acquiring the humidity monitored by the humidity sensor.

And step 53, judging whether the humidity is greater than or equal to 65%, if so, opening the baffle 8 of the humidity control film 6, opening the preservation box by a user, and finishing quick air conditioning. Otherwise, return to step 51.

In one example, table 1 compares the controlled atmosphere effect of a fast controlled atmosphere crisper to a regular controlled atmosphere crisper. The fruits and vegetables are tested as follows:

(1) fruit and vegetable mixing test: spinach (50g/L), strawberry (80g/L), grape (50g/L), tomato (50g/L) mixing tests; (2) the fungus test species are: oyster mushroom (180 g/L); (3) the leaf vegetable test types are as follows: spinach (50g/L) and pakchoi (100 g/L); (4) the fruit type test types are as follows: grape (80g/L) and strawberry (80 g/L). The oxygen, carbon dioxide and humidity inside the storage 24 hours were monitored and averaged.

Table 1: contrast of controlled atmosphere effect

And (3) testing conditions are as follows: the set temperature of the refrigerator is 5 ℃, and the volume of the preservation box is 30L. Moisture permeability R (0.01 g/cm) of the humidity control film²24h), moisture-permeable film area S (55 cm)²Per L), oxygen control film Performance (O)₂Transmittance of 5600cm²/m²*24h*0.1Mpa；CO₂Transmittance of 8400cm²/m²24h 0.1Mpa), and the area of the oxygen control membrane is 15cm²/L。

And (3) comparison of controlled atmosphere concentration: after 24 hours, in the quick air-conditioning stage, the oxygen reduction concentration is reduced by 30 percent compared with the common air-conditioning film, and the carbon dioxide increase concentration is improved by 2 times compared with the common air-conditioning film. The humidity was similar for both.

And (3) air-conditioning speed comparison: the oxygen is reduced to 17.8 percent, the oxygen reduction time of the quick controlled atmosphere preservative box is 18 hours earlier than that of the common controlled atmosphere film preservative box, and comprehensively, the oxygen reduction time is reduced by 3/4 compared with that of the common controlled atmosphere film, the carbon dioxide increasing time is reduced by 3/4 compared with that of the common controlled atmosphere film, and the humidity increasing time is reduced by 1/4 compared with that of the common controlled atmosphere film.

In one example, the moisture permeable film (i.e., the moisture control film 6) and the gas permeable film (i.e., the oxygen control film 5) can be replaced, and the corresponding air-conditioning structural member can be selected according to the characteristics of the fruits and vegetables stored in the preservation box. The storage characteristics of various fruits and vegetables are shown in Table 2, and the classification of modified atmosphere films is shown in Table 3.

Table 2: fruit and vegetable classification basis and suitable storage humidity thereof

Table 3: classification of air-conditioned structural members

In one example, moisture management film properties are determined, as can be seen in the following exemplary description.

The selection of the experimental sample refers to table 3, the size of the evapotranspiration of the experimental sample is related to the specific surface area of the fruits and vegetables, and the larger the specific surface area is, the faster the evapotranspiration and water loss of the fruits and vegetables are. The water loss of different fruits and vegetables is tested according to the table 5, so that the moisture permeability of the modified atmosphere films of different fruits and vegetables is calculated. The test results are shown in table 4, where the following equations 1 and 2 exist in table 4:

equation 1: m ═ R ═ S ═ V₁and/T. Wherein, the moisture permeability (g/24h) of the M-modified atmosphere film and the moisture permeability (g/cm) of the R-modified atmosphere film²24h), area ratio (cm) of air-conditioned membrane of S-preservation box²/L)，V₁-cell volume (L), T-storage time (h).

Equation 2: m ═ ρ × V₂w/T. Wherein m-evapotranspiration water loss (g/24h), rho-fruit and vegetable density (g/L), V₂-fruit and vegetable volume (L), w-fruit and vegetable average weight loss rate w (%), and T-storage time (T).

When the moisture permeability M of the modified atmosphere film is larger than the evapotranspiration water loss amount M, the humidity in the preservation box can be reduced, and the fruit and vegetable water loss can be accelerated when the humidity is too low; when the moisture permeability M of the modified atmosphere film is approximately equal to the evapotranspiration water loss M, the humidity in the box is kept relatively stable, and the fruits and vegetables are easy to store; when the moisture permeability M of the modified atmosphere film is less than the evapotranspiration water loss M, the humidity in the box can be increased to more than 98%, condensation is generated in the box, and the fruits and vegetables are easy to rot due to excessive condensation. When the moisture permeability M of the modified atmosphere film is equal to the evapotranspiration water loss M, the formula 3 exists: r ═ V (ρ × V)₂*w)/(S*V₁) And calculating the moisture permeability of the modified atmosphere film according to a formula 3.

Table 4: specific surface area of different fruits and vegetables

Specific surface area (cm)²/cm³)	Species of
		1000～100	Leaf vegetables and fungus
15～2	Very small soft fruit
		5～2	Beans, nuts, shallots, bigger soft fruits (strawberry)
1.5～0.5	Tuber, root tuber, pome fruit (apple, pear, etc.), mandarin orange, banana, onion
		0.5～0.2	Radish, yam and coconut

Table 5: evapotranspiration water loss of different fruits and vegetables

Note: volume V of preservation box₁(7.3L), volume V of fruit and vegetable₂(7.3L), moisture permeability of the moisture permeable film R (0.01 g/cm)²24h), moisture-permeable film area S (55 cm)²Per L), oxygen control film Performance (O)₂Transmittance of 5600cm²/m²*24h*0.1Mpa；CO₂Transmittance of 8400cm²/m²24h 0.1Mpa), and the area of the oxygen control membrane is 15cm²L, storage time 1d, storage temperature 5 ℃.

The moisture permeability of the air-conditioned film of fungi is 1742.92-2278.18 g/m²24h, the moisture permeability of the modified atmosphere film of the leaf vegetables is 311.65-1050.00 g/m²24h, the moisture permeability of the fruit air-conditioning film is 130-316.36 g/m²24 h. According to the data, the appropriate moisture permeability of different types of fruits and vegetables can be further determined, the accuracy of the formula 3 is verified, and the moisture permeable film performance screening is shown in table 6.

Table 6: moisture permeable film Performance screening

Note: the volume of the fresh-keeping box is 7.3L, the storage time is 1d, the storage temperature is 5 ℃, and the area of the moisture permeable film is 55cm²Per L, oxygen control Membrane Performance (O)₂Transmittance of 5600cm²/m²*24h*0.1Mpa；CO₂Transmittance of 8400cm²/m²24h 0.1Mpa), and the area of the oxygen control membrane is 15cm²And L. The general test categories are: spinach (50g/L), strawberry (80g/L), grape (50g/L), tomato (50g/L) mixing tests; the fungus test species are: oyster mushroom (180 g/L); the leaf vegetable test types are as follows: spinach (50g/L) and pakchoi (100 g/L); the fruit type test types are as follows: grape (80g/L) and strawberry (80 g/L). And (5) testing to obtain the average weight loss rate and the monitoring humidity.

The parameters of moisture permeability and air permeability suitable for various fruits and vegetables are comprehensively screened out and shown in the table 7. The actual test conclusion is similar to that according to equation 3: r ═ V (ρ × V)₂*w)/(S*V₁) The results of the calculations are consistent.

Table 7: performance parameters of moisture permeable film

Corresponding to the type of fruit and vegetable	Moisture permeability (g/m)²·24h)
		General purpose	300～1500
Fungus	＞1500
		Leaf vegetable	300～1500
Fruit (A. B	＜250

In one example, the oxygen transmission rate and carbon dioxide transmission rate of an oxygen control membrane are determined as described in the following exemplary description.

The oxygen and carbon dioxide transmission rates of the oxygen control film are screened in Table 8, and O of general fruits and vegetables is screened according to the suitable oxygen and carbon dioxide concentrations of the fruits and vegetables₂A transmittance of 500 to 1000mL/m²·24h，CO₂A transmittance of 1500 to 2500mL/m²24 h; leaf vegetable O₂A transmittance of 500 to 1000mL/m²·24h，CO₂A transmittance of 1500 to 2500mL/m²24 h; o of fungi₂A transmittance of 5400-10000 mL/m²·24h，CO₂Transmittance of 8400-15000 mL/m²·24h。

Table 8: oxygen control membrane performance screening

Note: the volume of the fresh-keeping box is 7.3L, the storage time is 1d, the storage temperature is 5 ℃, and the area of the moisture permeable film is 55cm²Per L, the area of the oxygen control membrane is 15cm²And L. The general test categories are: spinach (50g/L), strawberry (80g/L), grape (50g/L), tomato (50g/L) mixing tests; the fungus test species are:oyster mushroom (180 g/L); the leaf vegetable test types are as follows: spinach (50g/L) and pakchoi (100 g/L); the fruit type test types are as follows: grape (80g/L) and strawberry (80 g/L). And (5) testing to obtain the average weight loss rate and the monitoring humidity.

In conclusion, the moisture permeability and the O of the air conditioning piece suitable for different kinds of fruits and vegetables can be screened out in the above mode₂Transmittance, CO₂The transmittance can derive the air-conditioning structural parts aiming at specific fruits and vegetables, such as strawberries, cherries and the like, and the air-conditioning structural parts are replaced and selected according to actual requirements.

For example: the definition of the specific fruits and vegetables is that only one kind of fruits and vegetables are packaged, and if more than two kinds of fruits and vegetables need to be placed, the air-conditioning structure parts of the specific fruits and vegetables are not required to be selected, such as general, fruit, leaf vegetable and fungus modes can be selected.

Table 9: energy parameters of modified atmosphere films

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. 4, 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 tests prove that by adopting the technical scheme of the invention, the gas environment and the humidity in the box are quickly modified by monitoring the gas concentration and the humidity, so that the proper gas environment and the proper humidity are maintained in the box.

According to an embodiment of the present invention, there is also provided a storage medium corresponding to the freshness control method, where the storage medium includes a stored program, and the apparatus on which the storage medium is located is controlled to execute the above freshness control method when the program runs.

Since the processing and functions implemented by the storage medium of this embodiment substantially correspond to the embodiments, principles, and examples of the methods shown in fig. 1 to fig. 3, details are not described in the description of this embodiment, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.

Through a large number of tests, the technical scheme of the invention is adopted to carry out quick air conditioning on the gas environment and the humidity in the box by monitoring the oxygen, the carbon dioxide and the humidity, so that the oxygen concentration, the carbon dioxide concentration and the humidity in the box are all maintained at respective set values.

According to an embodiment of the present invention, there is also provided a processor corresponding to the freshness control method, the processor being configured to execute a program, wherein the program executes to execute the above-mentioned freshness control method.

Since the processing and functions implemented by the processor of this embodiment substantially correspond to the embodiments, principles, and examples of the methods shown in fig. 1 to fig. 3, details are not described in the description of this embodiment, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.

After a large number of tests prove that by adopting the technical scheme of the invention, after the quick air conditioning is finished, the oxygen control film and the humidity control film in the air conditioning film are switched and used through the baffle plate structure, and the proper storage environment of the preservation box is maintained through the oxygen control film and the humidity control film.

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. A freshness-retaining control method is characterized by comprising the following steps:

monitoring the gas concentration and humidity inside the preservation box; the preservation box is provided with an air-conditioning film unit and is used for carrying out first regulation on the concentration and the humidity of gas in the preservation box by utilizing the air-conditioning film unit under the condition that the air-conditioning film unit is opened; the gas concentration includes: oxygen concentration and carbon dioxide concentration;

determining whether the oxygen concentration is higher than a set oxygen concentration or the carbon dioxide concentration is lower than a set carbon dioxide concentration, and determining whether the humidity is lower than a set humidity;

and if the oxygen concentration is higher than a set oxygen concentration, or the carbon dioxide concentration is lower than a set carbon dioxide concentration, and/or if the humidity is lower than a set humidity, controlling the air-conditioning film unit to be closed so as to perform second regulation on the gas concentration and the humidity inside the fresh-keeping box under the condition that the air-conditioning film unit is closed.

2. The freshness control method according to claim 1, wherein the air-conditioned membrane unit comprises: the air-conditioning film, the guide rail (7) and the baffle (8); the modified atmosphere film comprises: an oxygen control film (5) and/or a moisture control film (6);

wherein the number of the oxygen control films (5) is more than one, and the number of the humidity control films (6) is more than one; the baffle (8) comprises: a first baffle and/or a second baffle; a pair of ends of the first baffle plate can move along the guide rail (7) to shield or open the oxygen control film (5) adjacent to the first baffle plate; a pair of ends of the second shutter, which can move along the guide rail (7) to shield or open the humidity control film (6) adjacent thereto;

controlling the modified atmosphere membrane unit to close, comprising:

controlling the baffles (8) in the modified atmosphere unit such that a first one of the baffles (8) is moved to shield the oxygen control membrane (5) adjacent thereto and/or a second one of the baffles (8) is moved to shield the humidity control membrane (6) adjacent thereto to effect closure of the modified atmosphere unit.

3. The freshness control method according to claim 1 or 2, further comprising:

after second adjustment of the gas concentration and humidity inside the crisper with the modified atmosphere unit closed, determining whether the oxygen concentration has not been higher than a set oxygen concentration or the carbon dioxide concentration has not been lower than a set carbon dioxide concentration, and determining whether the humidity has not been lower than a set humidity;

and if the oxygen concentration is not higher than the set oxygen concentration or the carbon dioxide concentration is not lower than the set carbon dioxide concentration, and/or if the humidity is not lower than the set humidity, controlling the air-conditioning film unit to be started so as to recover to the first regulation of the gas concentration and the humidity in the preservation box by using the air-conditioning film unit.

4. The freshness control method of claim 2, wherein controlling the opening of the air-conditioned membrane unit comprises:

in case the modified atmosphere unit comprises baffles (8), controlling the baffles (8) in the modified atmosphere unit to move a first one of the baffles (8) to uncover the oxygen control film (5) adjacent thereto and/or to move a second one of the baffles (8) to uncover the moisture control film (6) adjacent thereto to enable opening of the modified atmosphere unit.

5. The freshness-keeping control method according to claim 1 or 2,

the method for performing first regulation on the gas concentration and the humidity inside the preservation box by using the gas-conditioned membrane unit comprises the following steps:

controlling the opening quantity of more than two different types of the modified atmosphere films, and realizing the first regulation of the gas concentration and the humidity in the preservation box by utilizing the modified atmosphere films opened in the more than two modified atmosphere films.

6. The freshness control method according to claim 1 or 2, further comprising:

determining whether the crisper is in a closed state;

if the preservation box is in a closed state, displaying a first state and/or prompting a first message so as to monitor the gas concentration and humidity inside the preservation box under the condition that the preservation box is in the closed state;

and if the crisper is not in the closed state, displaying a second state and/or prompting a second message.

7. A freshness-retaining control device, comprising:

the monitoring unit (102) is used for monitoring the gas concentration and the humidity inside the preservation box; the preservation box is provided with an air-conditioning film unit and is used for carrying out first regulation on the concentration and the humidity of gas in the preservation box by utilizing the air-conditioning film unit under the condition that the air-conditioning film unit is opened; the gas concentration includes: oxygen concentration and carbon dioxide concentration;

a determination unit (104) for determining whether the oxygen concentration is higher than a set oxygen concentration or the carbon dioxide concentration is lower than a set carbon dioxide concentration, and determining whether the humidity is lower than a set humidity;

and the control unit (106) is used for controlling the air conditioning film unit to be closed if the oxygen concentration is higher than a set oxygen concentration or the carbon dioxide concentration is lower than a set carbon dioxide concentration and/or if the humidity is lower than a set humidity, so as to perform second regulation on the gas concentration and the humidity inside the fresh-keeping box under the condition that the air conditioning film unit is closed.

8. The freshness control device of claim 7, wherein the modified atmosphere unit comprises: the air-conditioning film, the guide rail (7) and the baffle (8); the modified atmosphere film comprises: an oxygen control film (5) and/or a moisture control film (6);

wherein the number of the oxygen control films (5) is more than one, and the number of the humidity control films (6) is more than one; the baffle (8) can move along the guide rail (7) to shield or open the modified atmosphere film adjacent to the baffle;

the control unit (106) controls the closing of the modified atmosphere membrane unit and comprises:

9. The freshness control device according to claim 7 or 8, further comprising:

the determining unit (104) is further used for determining whether the oxygen concentration is not higher than a set oxygen concentration or the carbon dioxide concentration is not lower than a set carbon dioxide concentration and determining whether the humidity is not lower than a set humidity after performing second adjustment on the gas concentration and the humidity in the fresh keeping box under the condition that the modified atmosphere unit is closed;

the control unit (106) is further used for controlling the opening of the modified atmosphere unit to recover to the first regulation of the gas concentration and the humidity inside the fresh-keeping box by using the modified atmosphere unit if the oxygen concentration is not higher than the set oxygen concentration or the carbon dioxide concentration is not lower than the set carbon dioxide concentration and/or if the humidity is not lower than the set humidity.

10. The freshness control device of claim 8, wherein the control unit (106) controls the gas-modified film unit to be turned on, comprising:

controlling the baffles (8) in the modified atmosphere unit to enable a first baffle in the baffles (8) to move to not shield the oxygen control film (5) adjacent to the first baffle, and/or enabling a second baffle in the baffles (8) to move to not shield the humidity control film (6) adjacent to the second baffle to open the modified atmosphere unit.

11. The freshness control device according to claim 7 or 8, wherein the control unit (106) performs a first adjustment of gas concentration and humidity inside the crisper using the modified atmosphere unit, comprising:

12. The freshness control device according to claim 7 or 8, further comprising:

the determining unit (104) is also used for determining whether the fresh-keeping box is in a closed state;

the control unit (106) is further configured to display a first state and/or prompt a first message if the crisper is in a closed state, so as to monitor the gas concentration and humidity inside the crisper if the crisper is in the closed state;

the control unit (106) is further configured to display a second status and/or prompt a second message if the crisper is not in the closed state.

13. A refrigerator, characterized by comprising: the freshness control device of any one of claims 7 to 12.

14. A storage medium, characterized in that the storage medium includes a stored program, wherein when the program runs, an apparatus in which the storage medium is located is controlled to execute the freshness control method according to any one of claims 1 to 6.

15. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to execute the freshness control method according to any one of claims 1 to 6 when running.