CN113137809B

CN113137809B - Refrigerator control method and refrigerator

Info

Publication number: CN113137809B
Application number: CN202110469884.5A
Authority: CN
Inventors: 陈佳弘; 刘畅; 李信良; 郭琨
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2022-06-21
Anticipated expiration: 2041-04-28
Also published as: CN113137809A

Abstract

The invention discloses a refrigerator control method and a refrigerator, wherein the method comprises the following steps: detecting the projection area of the articles in the fresh-keeping drawer; determining whether the storage amount of the articles is changed or not according to the projection area; and when the storage quantity of the articles changes, controlling the operation of the air-conditioning preservation system according to the current projection area of the articles. The invention solves the problems that the controlled atmosphere preservation control mode in the prior art is single and can not meet the requirements of different fruit and vegetable storage amounts, improves the adaptability of the controlled atmosphere preservation system and improves the freshness of the articles in the preservation drawer.

Description

Refrigerator control method and refrigerator

Technical Field

The invention relates to the technical field of refrigerators, in particular to a refrigerator control method and a refrigerator.

Background

With the continuous improvement of living standard and the improvement of dietary structure, people have higher and higher requirements on freshness of fruits and vegetables and durability of food preservation, so that the fruits and vegetables are required to be kept fresh in sense, and nutrient substances of the fruits and vegetables are required to be reserved to the maximum extent.

At present, the controlled atmosphere technology is common, the controlled atmosphere technology utilizes controlled atmosphere equipment to adjust the oxygen and carbon dioxide concentration in the fruit and vegetable drawer, and the oxygen concentration in the storage environment is reduced to improve the carbon dioxide concentration, so that the effects of fruit and vegetable aerobic respiration and self nutrient substance consumption are inhibited. The control mode of the controlled atmosphere preservation system in the prior art is single and fixed, but in the process of actual use of a user, the storage capacity of fruits and vegetables is changed, so that the strength of the overall transpiration effect of the fruits and vegetables is changed, and meanwhile, the requirements of different types of fruits and vegetables for oxygen concentration during preservation are also different. Therefore, a fixed modified atmosphere model is difficult to achieve good fresh-keeping effect.

Aiming at the problems that the controlled atmosphere preservation control mode in the related technology is single and the requirements of different fruit and vegetable storage amounts cannot be met, no effective solution is provided at present.

Disclosure of Invention

The invention provides a refrigerator control method and a refrigerator, and at least solves the problem that in the prior art, the controlled atmosphere preservation control mode is single, and the requirements of different fruit and vegetable storage amounts cannot be met.

In order to solve the technical problem, according to an aspect of an embodiment of the present invention, a method for controlling a refrigerator is provided, where the refrigerator includes a fresh-keeping drawer and a controlled atmosphere fresh-keeping system; the air-conditioning preservation system is used for adjusting the concentration of gas in the preservation drawer; the method comprises the following steps: detecting the projection area of the articles in the fresh-keeping drawer; determining whether the storage amount of the articles is changed or not according to the projection area; and when the storage quantity of the articles changes, controlling the operation of the air-conditioning preservation system according to the current projection area of the articles.

Furthermore, the bottom of the fresh-keeping drawer is provided with an illumination intensity sensor for detecting the projection area of the article; detect the projection area of article in the fresh-keeping drawer, include: and detecting the projection area of the articles in the fresh-keeping drawer before the preset time and the projection area of the articles in the fresh-keeping drawer after the preset time.

Further, determining whether the storage amount of the article is changed according to the projection area comprises the following steps: calculating the difference value between the projection area after the preset time and the projection area before the preset time; judging whether the storage quantity of the articles changes or not according to the difference value; and when the difference value is 0, determining that the storage quantity of the articles is not changed, otherwise, determining that the storage quantity of the articles is changed.

Further, the modified atmosphere preservation system also comprises: the nitrogen-oxygen separation membrane module comprises a nitrogen-oxygen separation membrane module and a vacuum pump and is used for separating oxygen from the fresh-keeping drawer; the nitrogen-oxygen separation membrane module is at least partially arranged in the preservation drawer, and the vacuum pump is arranged in the preservation drawer or outside the preservation drawer; the adjustable controlled atmosphere membrane component is arranged on the fresh-keeping drawer and comprises a controlled atmosphere membrane and an adjusting piece, the controlled atmosphere membrane is used for adjusting the oxygen concentration and the carbon dioxide concentration in the fresh-keeping drawer, and the adjusting piece is used for adjusting the effective use area of the controlled atmosphere membrane; wherein, the regulating part includes: adjusting the effective use area of the modified atmosphere film to be less than or equal to a% in a first state; adjusting the effective use area of the modified atmosphere film to be a% or more and b% or less; adjusting the effective use area of the modified atmosphere film to be in a third state of more than or equal to b%; wherein a is less than b.

Further, the operation of the controlled atmosphere preservation system is controlled according to the current projection area of the article, and the method comprises the following steps: detecting a current projected area of the article; when the current projection area is smaller than or equal to a first preset area, controlling the adjusting piece to be in a first state, and enabling the flow speed of the vacuum pump to be in a low-speed gear; when the current projection area is larger than the first preset area and smaller than the second preset area, controlling the adjusting piece to be in a second state, and enabling the flow speed of the vacuum pump to be in a medium-speed gear; when the current projection area is larger than or equal to a second preset area, controlling the adjusting piece to be in a third state, wherein the flow speed of the vacuum pump is a high-speed gear; wherein the first preset area is smaller than the second preset area.

Further, before controlling the operation of the modified atmosphere preservation system according to the current projected area of the object, the method further comprises the following steps: the regulating part is controlled to be in a first state, and the flow speed of the vacuum pump is in a medium-speed gear position.

Further, still include: when the storage quantity of the articles is not changed, the vacuum pump is controlled to be closed, and the regulating piece keeps the current state; detecting whether the fresh-keeping drawer is opened in real time; when the preservation drawer is opened, the user is prompted to close the preservation drawer.

Further, before detecting the projected area of the item in the freshness drawer, the method further comprises: controlling the controlled atmosphere preservation system to start to operate; detecting whether the fresh-keeping drawer is completely closed; if yes, triggering and detecting the projection area of the articles in the fresh-keeping drawer; otherwise, prompting the user to close the fresh-keeping drawer.

According to another aspect of an embodiment of the present invention, there is provided a refrigerator including: the fresh-keeping drawer 10 is provided with a fresh-keeping space which is relatively isolated from air and is formed in the fresh-keeping drawer 10; a nitrogen-oxygen separation membrane module 20 for separating oxygen from the fresh-keeping space; the adjustable gas regulating membrane assembly 30 is arranged on the fresh-keeping drawer 10, the adjustable gas regulating membrane assembly 30 comprises a gas regulating membrane 31 and an adjusting piece 32, the adjusting piece 32 is used for adjusting the effective use area of the gas regulating membrane 31, and the gas regulating membrane 31 is used for adjusting the oxygen concentration and the carbon dioxide concentration of a fresh-keeping space relative to an external space; and the illumination intensity sensor 40 is positioned at the bottom of the preservation drawer 10 and is used for detecting the projection area of the articles in the preservation drawer 10.

Further, the adjusting member 32 includes: adjusting the effective use area of the modified atmosphere film 31 to be less than or equal to a% in a first state; adjusting the effective use area of the modified atmosphere film 31 to be a second state which is more than a% and less than b%; regulating the effective use area of the modified atmosphere film 31 to be a third state of more than or equal to b%; wherein a is less than b.

Further, the nitrogen-oxygen separation membrane module 20 includes: a nitrogen-oxygen separation membrane module 21 for separating nitrogen and oxygen; the vacuum pump 22 is connected with the nitrogen-oxygen separation membrane module 21 through an exhaust pipe 23, and the vacuum pump 22 exhausts oxygen in the fresh-keeping space through the nitrogen-oxygen separation membrane module 21; the nitrogen-oxygen separation membrane module 21 is disposed at least partially within the crisper drawer 10, and the vacuum pump 22 is disposed within the crisper drawer 10 or outside the crisper drawer 10.

According to still another aspect of embodiments of the present invention, there is provided a storage medium containing computer-executable instructions for performing the refrigerator control method as described above when executed by a computer processor.

In the using process of a user, the projection area of the objects (such as fruits and vegetables) in the preservation drawer is identified, so that the storage quantity of the fruits and vegetables is judged, the operation preservation of the controlled atmosphere preservation system is adjusted, the appropriate gas environment in the drawer is kept and corresponds to the storage quantity of the objects in the preservation drawer, the adaptability of the controlled atmosphere preservation system is improved, and the freshness of the objects in the preservation drawer is improved.

Drawings

FIG. 1 is a schematic diagram of an alternative configuration of a crisper according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of an alternative nitrogen-oxygen separation membrane module according to an embodiment of the present invention;

fig. 3 is an alternative flowchart of a refrigerator control method according to an embodiment of the present invention;

FIG. 4 is a schematic view of an alternative construction of a crisper drawer according to an embodiment of the invention;

FIG. 5 is a schematic diagram of an alternative construction of a tunable gas-regulating membrane module according to an embodiment of the invention;

fig. 6 is another alternative flowchart of a refrigerator control method according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

Example 1

In preferred embodiment 1 of the present invention, there is provided a refrigerator control method, which can be directly applied to a refrigerator having a fresh-keeping function. Specifically, fig. 1 shows an embodiment of a crisper comprising a crisper drawer 10, a nitrogen-oxygen separation membrane module 20 and an adjustable gas-regulating membrane module 30 in which the gas-regulating freshness system of the present invention is located. Wherein, a fresh-keeping space which is relatively isolated from air is formed in the fresh-keeping drawer 10, the adjustable gas regulating membrane assembly 30 is arranged on the fresh-keeping drawer 10, and the nitrogen-oxygen separation membrane assembly 20 is used for separating oxygen from the fresh-keeping space.

Fig. 2 shows a schematic structural diagram of a nitrogen-oxygen separation membrane module of a fresh-keeping refrigerator, as shown in fig. 2, in the technical solution of this embodiment, the nitrogen-oxygen separation membrane module 20 includes a nitrogen-oxygen separation membrane module 21 and a vacuum pump 22, the nitrogen-oxygen separation membrane module 21 is used for separating nitrogen and oxygen, the vacuum pump 22 is connected to the nitrogen-oxygen separation membrane module 21 through an exhaust tube 23, and the vacuum pump 22 is used for pumping away oxygen in a fresh-keeping space through the nitrogen-oxygen separation membrane module 21. As shown in fig. 1, in use, the nitrogen-oxygen separation membrane module 20 is disposed in the fresh-keeping space, the vacuum pump 22 is disposed outside the fresh-keeping space, the vacuum pump 22 acts on the nitrogen-oxygen separation membrane module 20 through the exhaust pipe 23, the nitrogen-oxygen separation membrane module 20 only allows oxygen to pass through, but allows nitrogen to remain in the fresh-keeping space, and the oxygen separated by the nitrogen-oxygen separation membrane module 20 is exhausted to the outside space through the exhaust pipe 23 and the vacuum pump 22.

More preferably, as shown in fig. 2, the nitrogen and oxygen separation membrane module 20 includes a wind power part 24, and the wind power part 24 is provided at the nitrogen and oxygen separation membrane module 21. When in use, the wind power component 24 can make the air at the nitrogen-oxygen separation membrane module 21 circulate to prevent the nitrogen from gathering, thereby improving the separation efficiency of the nitrogen-oxygen separation membrane module 20 on the oxygen in the fresh-keeping space.

As an alternative embodiment, the wind power unit 24 is a fan mounted on the nitrogen-oxygen separation membrane module 21. Preferably, two fans are arranged on the nitrogen-oxygen separation membrane module 21 in parallel, so that the air circulation efficiency in the fresh-keeping space is improved. As other alternative embodiments, the wind-powered member 24 may also be a ventilation board that is movable to circulate the airflow.

Optionally, in the technical solution of this embodiment, the nitrogen-oxygen separation membrane module 21 is at least partially disposed inside the crisper drawer 10, and the vacuum pump 22 is disposed outside the crisper drawer 10. Wherein, should guarantee at least that the nitrogen gas circulation's of separation of nitrogen oxygen separation membrane module 21 one side is located fresh-keeping drawer 10 when using, let whole nitrogen oxygen separation membrane module 21 also be feasible in fresh-keeping drawer 10 certainly. The vacuum pump 22 is arranged outside the preservation drawer 10 and connected with the nitrogen-oxygen separation membrane module 21 through the exhaust tube 23, and the position of the vacuum pump 22 can be the position adjacent to the preservation drawer 10, and also can be the position far away from the preservation drawer 10, such as the positions of an inner container of a refrigerator or a compressor bin, and the like, as long as the vacuum pump is connected with the nitrogen-oxygen separation membrane module 21 through the exhaust tube 23. In addition, the vacuum pump 22 may be disposed within the preservation drawer 10, such that the vacuum pump 22 exhausts oxygen out of the preservation drawer 10 through an exhaust pipe.

Based on the structure of the fresh-keeping refrigerator, a refrigerator control method is further provided in preferred embodiment 1 of the present invention, fig. 3 shows an optional flowchart of the method, and as shown in fig. 3, the method includes the following steps S302-S306:

s302: detecting the projection area of the articles in the fresh-keeping drawer;

s304: determining whether the storage amount of the articles is changed or not according to the projection area;

s306: and when the storage quantity of the articles changes, controlling the operation of the air-conditioning preservation system according to the current projection area of the articles.

In the above embodiment, a refrigerator control scheme is provided, in a process of using by a user, by identifying a projection area of an article (for example, fruits and vegetables) in a preservation drawer, a change in storage amount of the fruits and vegetables is determined, and operation preservation of the controlled atmosphere preservation system is adjusted according to the change in the storage amount of the fruits and vegetables, so that an appropriate gas environment in the drawer is maintained, and the gas environment corresponds to the storage amount of the article in the preservation drawer, thereby improving adaptability of the controlled atmosphere preservation system and improving freshness of the article in the preservation drawer.

In the present invention, an illumination intensity sensor is used to detect the projected area of an article, fig. 4 shows an alternative structural schematic diagram of the preservation drawer in the present application, and as shown in fig. 4, an illumination intensity sensor 40 is disposed at the bottom of the preservation drawer 10 for detecting the projected area of the article.

Based on above-mentioned illumination intensity sensor, detect the projection area of article in the fresh-keeping drawer, include: and detecting the projection area of the articles in the preservation drawer before the preset time and the projection area of the articles in the preservation drawer after the preset time. After detecting the projected area of the article in the fresh-keeping drawer, whether the storage capacity of the article changes is determined according to the projected area, and the method specifically comprises the following steps: calculating the difference value between the projection area after the preset time and the projection area before the preset time; judging whether the storage quantity of the articles changes or not according to the difference value; and when the difference is 0, determining that the storage amount of the articles is not changed, otherwise, determining that the storage amount of the articles is changed.

Fig. 5 shows an alternative structure schematic diagram of the adjustable gas regulating membrane module, as shown in fig. 5, as a preferred embodiment, in the technical solution of the present embodiment, the adjustable gas regulating membrane module 30 further includes a vent hole 33, the vent hole 33 is used for communicating the fresh keeping space and the external space, and the adjusting member 32 is also used for adjusting the opening and closing of the vent hole 33.

As shown in fig. 5, the damper 32 may optionally include a fully closed state, a modified atmosphere state, a modified fully open state, and a vent state. Wherein, in the fully closed state, the effective use area of the air adjusting film 31 is adjusted to be 0 percent, and the vent hole 33 is closed; in the air-conditioning adjusting state, the effective use area of the air-conditioning film 31 is adjusted to be 0-100%, and the vent hole 33 is closed; in the air-conditioning fully-opened state, the effective use area of the air-conditioning film 31 is adjusted to be 100%, and the vent hole 33 is closed; in the ventilation state, the ventilation hole 33 is opened.

In a modified atmosphere conditioning state, the conditioning element comprises: adjusting the effective use area of the modified atmosphere film to be less than or equal to a% in a first state; adjusting the effective use area of the modified atmosphere film to be a% or more and b% or less; adjusting the effective use area of the modified atmosphere film to be a third state of more than or equal to b%; where a < b, for example, a-33 and b-66, or other values may be set according to the actual modified atmosphere requirement.

The storage amount of the fruits and vegetables is changed, a user may open a fresh-keeping drawer (hereinafter, collectively referred to as a fruit and vegetable box) to take out the fruits and vegetables or put the fruits and vegetables into the fruit and vegetable box, air is mixed into the fruit and vegetable box at the moment, oxygen reduction is needed again, a vacuum pump (4L/min) is started to reduce oxygen, and meanwhile, the effective area of the modified atmosphere film is adjusted, for example, the area is less than or equal to a%, the area of the modified atmosphere film is smaller at the moment, and oxygen reduction and humidity increase are facilitated.

After the control process, the operation of the controlled atmosphere preservation system is controlled according to the current projection area of the article, and the specific process comprises the following steps: detecting a current projected area of the article; when the current projection area is smaller than or equal to a first preset area, controlling the adjusting piece to be in a first state, and setting the flow rate of the vacuum pump to be a low-speed gear; when the current projection area is larger than the first preset area and smaller than the second preset area, controlling the adjusting piece to be in a second state, and enabling the flow speed of the vacuum pump to be in a medium-speed gear; when the current projection area is larger than or equal to a second preset area, controlling the adjusting piece to be in a third state, wherein the flow speed of the vacuum pump is a high-speed gear; wherein the first preset area is smaller than the second preset area.

When the current projection area is smaller than or equal to a first preset area, the storage quantity of the fruits and vegetables is less, so that the area of the air-conditioning film is adjusted to match the fruit and vegetable storage in the state, and the first state is selected, for example: s1 is not more than 1/3S2(S1 is the effective use area of the modified atmosphere film, S2 is the total area of the modified atmosphere film). Meanwhile, in order to prevent humidity loss, the vacuum pump reduces the flow rate to 2L/min (the nitrogen-oxygen separation membrane reduces oxygen and simultaneously reduces humidity).

And similarly, the effective use area of the air-conditioning membrane and the flow rate of the vacuum pump are adjusted according to the size of the projection area S. When the projection area is bigger, it shows that the fruit vegetables stock volume is more, and the effective usable floor area of gas regulating membrane is also bigger, and fruit vegetables volume is big simultaneously, and the moisture that the fruit vegetables gived off is more, causes humidity too big in the fruit vegetables box easily, can improve the vacuum pump velocity of flow, prevents that humidity from surpassing 98%.

The above process is a control scheme when the storage amount of the article is changed, and when the storage amount of the article is not changed, the following control is executed: controlling the vacuum pump to be closed, and keeping the current state of the regulating part; detecting whether the fresh-keeping drawer is opened in real time; when the preservation drawer is opened, the user is prompted to close the preservation drawer.

Meanwhile, the control process is carried out in the operation process of the modified atmosphere preservation system, namely before the use condition of the preservation drawer is detected, the control process further comprises the following steps: controlling the controlled atmosphere preservation system to start to operate; detecting whether the fresh-keeping drawer is completely closed; if yes, triggering and detecting the projection area of the articles in the fresh-keeping drawer; otherwise, prompting the user to close the fresh-keeping drawer.

Another refrigerator control method is further provided in preferred embodiment 1 of the present invention, fig. 6 shows an alternative flowchart of the method, and as shown in fig. 6, the method includes the following steps S601 to S618:

s601: the user starts the air conditioning function according to the requirement;

s602: detecting whether the fruit and vegetable box (fresh-keeping drawer) is closed or not;

s603: prompting a user to close the drawer; after the user opens the air-conditioning function according to the requirement, firstly, identifying whether the fresh-keeping drawer is tightly closed or not, if not, reminding the user of tightly closing the fresh-keeping drawer by the system, and identifying whether the fresh-keeping drawer is tightly closed again until tightly closing;

s604: detecting the projection area S of the fruit and vegetable box;

s605: detecting whether the Delta S is more than 0, and if yes, entering the step S607;

s606: detecting whether the Delta S is less than 0, and if yes, entering the step S607;

s607: regulating the flow rate of a vacuum pump to 4L/min, and regulating the air-conditioned membrane to the A gear; the active membrane area of the position A, B, C is three levels, i.e., low, medium, and high. The effective use area S1 of the modified atmosphere film corresponding to the gear A is not more than 1/3S2 (the total area of the modified atmosphere film); b gear: 1/3S2 < S1 < 2/3S 2; c gear: s1 is more than or equal to 2/3S 2. When the storage quantity of the fruits and vegetables is less, the gear A is executed. When the storage amount of the fruits and vegetables is moderate, executing the gear B, and when the storage amount is high, executing the gear C;

s608: detecting whether S is less than or equal to 1/3S 0; s0 represents the bottom area of the fruit and vegetable box, S is the projection area of the fruit and vegetable), S is less than or equal to 1/3S0, which indicates that the storage amount of the fruit and vegetable is less;

s609: adjusting the air-conditioning film to the gear A, and controlling the flow rate of a vacuum pump to be 2L/min; the storage amount of fruits and vegetables is less, so the area of the modified atmosphere film is adjusted to match the storage of the fruits and vegetables in the state, and the A gear is selected: s1 is not more than 1/3S 2. Meanwhile, in order to prevent humidity loss, the flow rate is reduced to 2L/min by a vacuum pump (the humidity is reduced when the nitrogen-oxygen separation membrane reduces oxygen);

s610: detecting 1/3S0 < S < 2/3S 0; 1/3S0 is more than S and less than 2/3S0, which indicates that the storage amount of fruits and vegetables is moderate;

s611: adjusting the air-conditioning film to a B gear, and enabling the flow rate of a vacuum pump to be 4L/min; the storage capacity of fruits and vegetables is medium, and the gear B is selected: 1/3S2 < S1 < 2/3S2, and the flow rate is reduced to 4L/min by a vacuum pump;

s612: detecting whether S is greater than or equal to 2/3 or not and S0 is true or not; s is not less than 2/3S0, which indicates that the storage amount of the fruits and vegetables is large;

s613: adjusting the air-conditioning film to a C gear, and controlling the flow rate of a vacuum pump to be 6L/min; according to the size of the projection area S, when the projection area is larger, the larger the storage amount of fruits and vegetables is, the larger the effective use area of the air-conditioning film is, and meanwhile, the larger the amount of fruits and vegetables is, the more the moisture emitted by the fruits and vegetables is, the overlarge humidity in the fruit and vegetable box is easily caused, the flow rate of a vacuum pump can be increased, and the humidity is prevented from exceeding 98%;

s614: if delta S is 0, the quantity of the stored fruits and vegetables is not changed, the oxygen reduction is basically finished, the vacuum pump is stopped, and the stable modified atmosphere state is maintained by using the modified atmosphere film until the fruit and vegetable box is opened. Executing steps S615-S618;

s615: closing the vacuum pump;

s616: the air-conditioning film keeps the current gear;

s617: monitoring whether the drawer is opened or not in real time; if yes, go to step S603; otherwise, go to S618;

s618: and keeping the current modified atmosphere mode.

The projection area of the fruits and vegetables in the drawer is identified through the illumination intensity sensor at the bottom of the preservation drawer, so that the storage quantity of the fruits and vegetables is judged, the effective use area of the air-conditioned membrane is adjusted, the moisture permeability and the oxygen and carbon dioxide permeability are adjusted according to the storage quantity of the fruits and vegetables, and the purpose of keeping the proper humidity environment and gas environment in the drawer is achieved. And through the linkage control of the nitrogen-oxygen separation membrane module and the air-conditioned membrane module, the environment humidity and the oxygen concentration can be quickly adjusted to proper storage concentration, so that the requirements of different fruit and vegetable storage amounts are met.

Example 2

Based on the refrigerator control method provided in the above embodiment 1, there is also provided in a preferred embodiment 2 of the present invention, a refrigerator, the mechanism of which has been illustrated in fig. 1, that is, which includes:

the fresh-keeping drawer 10 is provided with a fresh-keeping space which is relatively isolated from air and is formed in the fresh-keeping drawer 10;

a nitrogen-oxygen separation membrane module 20 for separating oxygen from the fresh-keeping space;

the adjustable gas regulating membrane assembly 30 is arranged on the fresh-keeping drawer 10, the adjustable gas regulating membrane assembly 30 comprises a gas regulating membrane 31 and an adjusting piece 32, the adjusting piece 32 is used for adjusting the effective use area of the gas regulating membrane 31, and the gas regulating membrane 31 is used for adjusting the oxygen concentration and the carbon dioxide concentration of a fresh-keeping space relative to an external space;

and the illumination intensity sensor 40 is positioned at the bottom of the preservation drawer 10 and is used for detecting the projection area of the articles in the preservation drawer 10.

In the above embodiment, a refrigerator control scheme is provided, in a process of using by a user, by identifying a projection area of an article (for example, fruits and vegetables) in a preservation drawer, a storage amount of the fruits and vegetables is determined and an operation preservation of a controlled atmosphere preservation system is adjusted to maintain an appropriate gas environment in the drawer, which corresponds to the storage amount of the article in the preservation drawer, so that an adaptability of the controlled atmosphere preservation system is improved, and a freshness degree of the article in the preservation drawer is improved.

By applying the technical scheme of the invention, oxygen can be separated from the fresh-keeping space through the nitrogen-oxygen separation membrane component 20, so that a low-oxygen atmosphere is created in the fresh-keeping space, and the fresh keeping of food materials such as fruits and vegetables is facilitated. The oxygen concentration and the carbon dioxide concentration in the fresh-keeping space can be finely adjusted through the air-adjusting film 31, the fresh-keeping space is used, the oxygen concentration in the fresh-keeping space can be further reduced under the respiration effect of the food materials such as fruits and vegetables, the carbon dioxide concentration is increased, therefore, the oxygen in the external space can be properly supplemented into the fresh-keeping space through the air-adjusting film 31, the carbon dioxide in the fresh-keeping space is scattered to the external space, and the anaerobic respiration of the food materials such as fruits and vegetables caused by the over-low oxygen concentration and the over-high carbon dioxide concentration in the fresh-keeping space is avoided. The effective use area of the modified atmosphere film 31 is adjusted through the adjusting piece 32, so that the adjusting effect of the modified atmosphere film 31 on the oxygen concentration and the carbon dioxide concentration in the fresh-keeping space can be adjusted, the situation that the oxygen is too much enters the fresh-keeping space to destroy the low-oxygen atmosphere is avoided, and the anaerobic respiration of food materials such as fruits and vegetables caused by too low oxygen concentration and too high carbon dioxide concentration in the fresh-keeping space is also avoided.

In addition, it should be noted that the modified atmosphere film 31 can also maintain the humidity in the fresh-keeping space at a certain level, which is beneficial to keeping food materials such as fruits and vegetables fresh.

As shown in fig. 5, in the preferred embodiment, the adjustable gas-regulating membrane module 30 further comprises a vent hole 33, the vent hole 33 is used for communicating the fresh-keeping space with the external space, and the adjusting member 32 is used for adjusting the opening and closing of the vent hole 33.

In a preferred embodiment, the controlled atmosphere membrane 31 has an effective use area of 0% in the aeration state. As other alternative embodiments, it is also possible that no limitation on the effective usable area of the modified atmosphere film 31 is required after the vent hole 33 is opened in the venting state. After the vent hole 33 is opened, the fresh food space and the external space are in a complete linkage state, so that resistance to air flow is minimal, and air flow preferentially passes through the vent hole 33.

As an alternative, in the solution of the present embodiment, the tunable gas atmosphere module 30 includes a substrate 34, the gas atmosphere film 31 is mounted on the substrate 34, the vent hole 33 is opened on the substrate 34, and the adjusting member 32 is movably disposed on the substrate 34 to adjust the effective use area of the gas atmosphere film 31 and/or adjust the opening and closing of the vent hole 33. When in use, the effective use area of the air-conditioning film 31 can be adjusted through the movable adjusting piece 32; the opening and closing of the ventilation hole 33 can also be regulated by the movable regulator 32.

As a preferred embodiment, as shown in fig. 5, the adjusting member 32 is a baffle plate, which is slidably disposed on the base plate 34 and is used for adjusting the effective use area of the modified atmosphere film 31 and/or adjusting the opening and closing of the vent hole 33 in a shielding/avoiding manner. The control of the effective use area of the modified atmosphere film 31 and the control of the opening and closing of the vent hole 33 can be realized more conveniently by the design of the slidable baffle plate. When the effective use area of the controlled atmosphere film 31 needs to be adjusted, the baffle can selectively shield/avoid the action area of the controlled atmosphere film 31 and the fresh-keeping space or the external space; when the vent hole 33 needs to be opened, the baffle plate is made to avoid the vent hole 33, and when the vent hole 33 needs to be closed, the baffle plate is made to shield the vent hole 33.

Specifically, for several states of the adjusting member 32, in the fully closed state, the baffle plate moves to a position where it completely blocks the modified atmosphere film 31 and a position where it completely blocks the vent hole 33; in the modified atmosphere state, the baffle plate moves to a position for partially shielding the modified atmosphere film 31 and a position for completely shielding the vent hole 33; in the air-conditioning full-open state, the baffle plate moves to the position of avoiding the air-conditioning film 31 and the position of completely shielding the vent hole 33; in the ventilation state, the baffle plate moves to a position to escape the ventilation hole 33. As shown in fig. 5, the baffle plate can have two gears in the modified atmosphere state, and the effective area of the modified atmosphere film 31 is different under different gears. As other alternative embodiments, the damper may have more shift positions. A first state in which the effective use area is a% or less; adjusting the effective use area of the modified atmosphere film 31 to be a second state which is more than a% and less than b%; regulating the effective use area of the modified atmosphere film 31 to be a third state of more than or equal to b%; wherein a is less than b.

More preferably, in the technical solution of the present embodiment, the tunable gas atmosphere module 30 further includes a slide rail 35, the slide rail 35 is installed on the base plate 34, and the baffle is slidably installed on the slide rail 35. Through the cooperation of slide rail 35 and baffle, can let the gliding more smooth and easy of baffle.

As shown in fig. 2, in the technical solution of this embodiment, the nitrogen-oxygen separation membrane module 20 includes a nitrogen-oxygen separation membrane module 21 and a vacuum pump 22, the nitrogen-oxygen separation membrane module 21 is used for separating nitrogen and oxygen, the vacuum pump 22 is connected to the nitrogen-oxygen separation membrane module 21 through an exhaust pipe 23, and the vacuum pump 22 exhausts oxygen from the fresh-keeping space through the nitrogen-oxygen separation membrane module 21. As shown in fig. 1, when in use, the nitrogen-oxygen separation membrane module 20 is disposed in the fresh space, the vacuum pump 22 is disposed outside the fresh space, the vacuum pump 22 acts on the nitrogen-oxygen separation membrane module 20 through the exhaust pipe 23, the nitrogen-oxygen separation membrane module 20 only allows oxygen to pass through, while nitrogen remains in the fresh space, and oxygen separated by the nitrogen-oxygen separation membrane module 20 is discharged to the outside space through the exhaust pipe 23 and the vacuum pump 22.

More preferably, as shown in fig. 2, the nitrogen and oxygen separation membrane module 20 includes a wind power part 24, and the wind power part 24 is provided at the nitrogen and oxygen separation membrane module 21. When in use, the wind power component 24 can make the air at the nitrogen-oxygen separation membrane module 21 circulate to prevent the nitrogen from gathering, thereby improving the separation efficiency of the nitrogen-oxygen separation membrane module 20 for the oxygen in the fresh-keeping space.

As an alternative embodiment, the wind power unit 24 is a fan mounted on the nitrogen-oxygen separation membrane module 21. Preferably, the number of the fans is two, and the two fans are arranged on the nitrogen-oxygen separation membrane module 21 in parallel, so that the air circulation efficiency in the fresh-keeping space is improved. As a further alternative, the wind member 24 may also be a ventilation board that is movable to circulate the air flow.

Example 3

Based on the refrigerator control method provided in the above embodiment 1, there is also provided in a preferred embodiment 3 of the present invention a storage medium containing computer-executable instructions for performing the refrigerator control method as described above when executed by a computer processor.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. The refrigerator control method is characterized in that the refrigerator comprises a fresh-keeping drawer and an air-conditioning fresh-keeping system; the modified atmosphere preservation system is used for adjusting the gas concentration in the preservation drawer; the method comprises the following steps:

detecting the projection area of the articles in the preservation drawer;

determining whether the storage quantity of the articles is changed or not according to the projection area;

when the storage volume of the articles changes, controlling the operation of the controlled atmosphere preservation system according to the current projection area of the articles;

the modified atmosphere preservation system further comprises:

the nitrogen-oxygen separation membrane module comprises a nitrogen-oxygen separation membrane module and a vacuum pump and is used for separating oxygen from the fresh-keeping drawer; the nitrogen-oxygen separation membrane module is at least partially arranged in the preservation drawer, and the vacuum pump is arranged in the preservation drawer or outside the preservation drawer;

the adjustable gas-regulating membrane assembly is arranged on the fresh-keeping drawer and comprises a gas-regulating membrane and an adjusting piece, the gas-regulating membrane is used for adjusting the oxygen concentration and the carbon dioxide concentration in the fresh-keeping drawer, and the adjusting piece is used for adjusting the effective use area of the gas-regulating membrane;

controlling the operation of the controlled atmosphere preservation system according to the current projection area of the article, comprising:

controlling the effective use area of the air-conditioned membrane and the flow rate of the vacuum pump according to the current projection area of the object;

the adjusting member includes:

adjusting a first state that the effective use area of the modified atmosphere film is less than or equal to a%;

adjusting the effective use area of the modified atmosphere film to be a% or more and b% or less;

adjusting the effective use area of the modified atmosphere film to be a third state of more than or equal to b%; wherein a is less than b;

controlling the operation of the modified atmosphere preservation system according to the current projection area of the article, wherein the operation comprises the following steps:

detecting a current projected area of the item;

when the current projection area is smaller than or equal to a first preset area, controlling the adjusting piece to be in the first state, wherein the flow speed of the vacuum pump is a low-speed gear;

when the current projection area is larger than the first preset area and smaller than a second preset area, controlling the adjusting piece to be in the second state, and enabling the flow speed of the vacuum pump to be in a medium-speed gear;

when the current projection area is larger than or equal to the second preset area, controlling the adjusting piece to be in the third state, wherein the flow speed of the vacuum pump is a high-speed gear; wherein the first preset area is smaller than the second preset area.

2. The method of claim 1, wherein a light intensity sensor is provided at the bottom of the crisper drawer for detecting the projected area of the item; detecting the projected area of the items in the fresh-keeping drawer, comprising:

and detecting the projection area of the articles in the preservation drawer before the preset time and the projection area of the articles in the preservation drawer after the preset time.

3. The method of claim 2, wherein determining whether the storage volume of the item has changed based on the projected area comprises:

calculating the difference value between the projection area after the preset time and the projection area before the preset time;

judging whether the storage quantity of the articles is changed or not according to the difference value; and when the difference is 0, determining that the storage quantity of the article is not changed, otherwise, determining that the storage quantity of the article is changed.

4. The method of claim 1, further comprising, prior to controlling operation of the modified atmosphere preservation system based on the current projected area of the item:

and controlling the adjusting piece to be in the first state, wherein the flow rate of the vacuum pump is a medium-speed gear.

5. The method of claim 1, further comprising:

when the storage quantity of the articles is not changed, controlling the vacuum pump to be switched off, and keeping the current state of the regulating part;

detecting whether the preservation drawer is opened in real time;

and when the preservation drawer is opened, prompting a user to close the preservation drawer.

6. The method of claim 1, further comprising, prior to detecting the projected area of the item within the crisper drawer:

controlling the controlled atmosphere preservation system to start to operate;

detecting whether the fresh-keeping drawer is completely closed;

if yes, triggering and detecting the projection area of the articles in the preservation drawer;

otherwise, prompting the user to close the fresh-keeping drawer.

7. A refrigerator, characterized by comprising:

the fresh-keeping drawer (10), the fresh-keeping space that has relatively isolated air is formed in the fresh-keeping drawer (10);

a nitrogen-oxygen separation membrane module (20) for separating oxygen from the fresh-keeping space;

the adjustable gas-regulating membrane assembly (30) is arranged on the fresh-keeping drawer (10), the adjustable gas-regulating membrane assembly (30) comprises a gas-regulating membrane (31) and a regulating piece (32), the regulating piece (32) regulates the effective use area of the gas-regulating membrane (31), and the gas-regulating membrane (31) is used for regulating the oxygen concentration and the carbon dioxide concentration of the fresh-keeping space relative to the external space;

the illumination intensity sensor (40) is positioned at the bottom of the preservation drawer (10) and is used for detecting the projection area of the articles in the preservation drawer (10);

the adjustment member (32) comprises:

adjusting a first state that the effective use area of the air-conditioned membrane (31) is less than or equal to a%;

adjusting the effective use area of the modified atmosphere film (31) to be a% or more and b% or less;

adjusting the effective use area of the air-conditioned membrane (31) to be in a third state of more than or equal to b%; wherein a is less than b;

the membrane module (20) for nitrogen and oxygen separation comprises:

a nitrogen-oxygen separation membrane module (21) for separating nitrogen and oxygen;

the vacuum pump (22) is connected with the nitrogen-oxygen separation membrane module (21) through an air exhaust pipe (23), and the vacuum pump (22) exhausts oxygen in the fresh-keeping space through the nitrogen-oxygen separation membrane module (21); the nitrogen-oxygen separation membrane module (21) is at least partially arranged in the freshness drawer (10), and the vacuum pump (22) is arranged in the freshness drawer (10) or outside the freshness drawer (10);

when the current projection area of the object is smaller than or equal to a first preset area, the adjusting piece is in the first state, and the flow rate of the vacuum pump is in a low-speed gear position;

when the current projection area is larger than the first preset area and smaller than a second preset area, the adjusting piece is in the second state, and the flow rate of the vacuum pump is a medium-speed gear;

when the current projection area is larger than or equal to the second preset area, the adjusting piece is in the third state, and the flow rate of the vacuum pump is a high-speed gear; wherein the first preset area is smaller than the second preset area.

8. A storage medium containing computer-executable instructions, characterized in that the computer-executable instructions, when executed by a computer processor, are for performing the refrigerator control method of any one of claims 1 to 6.