CN113137813B - Gas concentration regulation and control method for refrigerator and fresh-keeping refrigerator - Google Patents

Gas concentration regulation and control method for refrigerator and fresh-keeping refrigerator Download PDF

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Publication number
CN113137813B
CN113137813B CN202110469969.3A CN202110469969A CN113137813B CN 113137813 B CN113137813 B CN 113137813B CN 202110469969 A CN202110469969 A CN 202110469969A CN 113137813 B CN113137813 B CN 113137813B
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China
Prior art keywords
carbon dioxide
concentration
vacuum pump
drawer
dioxide concentration
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CN202110469969.3A
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Chinese (zh)
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CN113137813A (en
Inventor
焦雯姝
陈佳弘
郭琨
李信良
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/005—Mounting of control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/04—Treating air flowing to refrigeration compartments

Abstract

The invention discloses a gas concentration regulation and control method of a refrigerator and a fresh-keeping refrigerator. Wherein, the method comprises the following steps: monitoring the concentration of carbon dioxide in the drawer when the drawer is closed; executing a corresponding adjustment strategy according to the interval of the carbon dioxide concentration to adjust the gear of a vacuum pump in the nitrogen-oxygen separation membrane module and the gear of an air-conditioning membrane in the air-conditioning membrane module; and the vacuum pump and the initial gear of the air-conditioned membrane are both intermediate gears. The invention can realize the linkage control of the controlled atmosphere membrane and the nitrogen-oxygen separation membrane module according to the concentration of the carbon dioxide in the drawer, and can judge whether the rotating speed of the vacuum pump and the effective use area of the controlled atmosphere membrane need to be adjusted according to the concentration of the carbon dioxide in the drawer. The concentration of the carbon dioxide in the drawer is ensured to be appropriate while the concentration of the oxygen in the drawer is reduced. Can effectively inhibit the aerobic respiration of fruits and vegetables and avoid the damage caused by the anaerobic respiration of fruits and vegetables.

Description

Gas concentration regulation and control method for refrigerator and fresh-keeping refrigerator
Technical Field
The invention relates to the technical field of refrigerators, in particular to a gas concentration regulation and control method of a refrigerator and a fresh-keeping 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 air-conditioning preservation technology can meet the requirements of people on the whole, and the technology mainly comprises active air conditioning and passive air conditioning. The active air conditioning is usually to adjust the oxygen and carbon dioxide concentrations in the fruit and vegetable drawers by using air conditioning equipment, and the concentration of the carbon dioxide is increased by reducing the oxygen concentration in the storage environment, so that the effects of fruit and vegetable aerobic respiration and self nutrient consumption are inhibited. However, when the concentration of carbon dioxide is too high, anaerobic respiration of fruits and vegetables occurs, causing damage.
In the prior art, the purpose of inhibiting aerobic respiration of fruits and vegetables is achieved by arranging a gas regulating film (blocking nitrogen through oxygen) to keep the atmosphere of nitrogen-rich and oxygen-poor gas in a drawer of a refrigerator. However, the technical scheme can not avoid the damage of fruits and vegetables caused by anaerobic respiration, and when the oxygen concentration in the drawer of the refrigerator is too low or the carbon dioxide concentration is too high, the fruits and vegetables can be damaged by the anaerobic respiration, so that a good fresh-keeping effect cannot be achieved.
The problem of the damage that the gas concentration adjustment scheme of refrigerator drawer can't avoid fruit vegetables anaerobic respiration to cause among the prior art, has not proposed effectual solution at present.
Disclosure of Invention
The embodiment of the invention provides a gas concentration regulating method of a refrigerator and a fresh-keeping refrigerator, and aims to solve the problem that a gas concentration regulating scheme of a refrigerator drawer in the prior art cannot avoid damage caused by anaerobic respiration of fruits and vegetables.
In order to solve the technical problem, the invention provides a gas concentration regulation and control method of a refrigerator, wherein the method comprises the following steps: monitoring the concentration of carbon dioxide in the drawer in a closed state of the drawer; executing a corresponding adjusting strategy according to the interval of the carbon dioxide concentration so as to adjust the gear of a vacuum pump in the nitrogen-oxygen separation membrane module and the gear of an air-conditioning membrane in the adjustable air-conditioning membrane module; wherein the vacuum pump and the initial gear of the air-conditioned membrane are both intermediate gears;
the nitrogen-oxygen separation membrane module comprises a vacuum pump and a nitrogen-oxygen separation membrane module arranged on the drawer, the vacuum pump is used for pumping oxygen through the nitrogen-oxygen separation membrane module, and different gears of the vacuum pump correspond to different speeds of pumping oxygen;
the adjustable gas-regulating membrane assembly is arranged on the drawer and comprises a gas-regulating membrane, the gas-regulating membrane is used for regulating the oxygen concentration and the carbon dioxide concentration of the fresh-keeping space of the drawer relative to the external space, and different gears of the gas-regulating membrane correspond to different effective use areas.
Further, the interval where the concentration of the carbon dioxide is located is divided into a first interval, a second interval and a third interval; the first interval is that the carbon dioxide concentration is less than a first preset value, the second interval is that the carbon dioxide concentration is less than or equal to a second preset value, and the third interval is that the carbon dioxide concentration is greater than or equal to the second preset value.
Further, according to the interval where the carbon dioxide concentration is located, executing a corresponding adjustment strategy to adjust the shift of the vacuum pump in the nitrogen-oxygen separation membrane module and the shift of the modified atmosphere membrane in the modified atmosphere membrane module, including:
if the concentration of the carbon dioxide is in the first interval, the gear of the vacuum pump is turned down, and the gear of the air-adjusting membrane is kept unchanged;
if the concentration of the carbon dioxide is in the second interval, controlling the vacuum pump to be closed, and keeping the gear of the controlled atmosphere membrane unchanged;
and if the concentration of the carbon dioxide is in the third interval, keeping the gear of the vacuum pump unchanged, and increasing the gear of the modified atmosphere film.
Further, after executing a corresponding adjustment strategy according to the interval where the carbon dioxide concentration is located to adjust the shift of the vacuum pump in the nitrogen-oxygen separation membrane module and the shift of the modified atmosphere membrane in the modified atmosphere membrane module, the method further includes:
monitoring the change of the concentration of carbon dioxide in the drawer within a preset time period;
and on the premise that the concentration of the carbon dioxide is in different intervals, executing corresponding adjustment strategies on the vacuum pump and the controlled atmosphere membrane according to the fact that the concentration of the carbon dioxide is increased, decreased or unchanged.
Further, if the carbon dioxide concentration is in the first interval, according to whether the change of the carbon dioxide concentration is increase, decrease or constant, executing a corresponding adjustment strategy on the vacuum pump and the modified atmosphere film, including:
if the change of the carbon dioxide concentration is an increase, maintaining the current gears of the vacuum pump and the controlled atmosphere membrane;
if the carbon dioxide concentration is unchanged, the gear of the controlled atmosphere membrane is reduced, the change of the carbon dioxide concentration in the drawer in a preset time period is continuously monitored, if the carbon dioxide concentration is increased, the current gears of the vacuum pump and the controlled atmosphere membrane are kept, and if the carbon dioxide concentration is unchanged, the vacuum pump is closed.
Further, after turning off the vacuum pump, the method further comprises:
monitoring the change of the concentration of carbon dioxide in the drawer within a preset time period;
if the carbon dioxide concentration is increased, the current gear of the vacuum pump and the modified atmosphere membrane is kept, and if the carbon dioxide concentration is not changed, the modified atmosphere membrane is closed.
Further, if the carbon dioxide concentration is in the first interval, after the corresponding adjustment strategies are executed on the vacuum pump and the modified atmosphere membrane according to whether the change of the carbon dioxide concentration is an increase, a decrease or a constant, the method further comprises:
monitoring whether the carbon dioxide concentration is still in the first interval;
if so, keeping the current gears of the vacuum pump and the modified atmosphere film;
and if not, executing a corresponding adjustment strategy according to the interval where the carbon dioxide concentration is located.
Further, if the carbon dioxide concentration is in the second interval, executing a corresponding adjustment strategy on the vacuum pump and the modified atmosphere membrane according to whether the change of the carbon dioxide concentration is an increase, a decrease or a constant, including:
if the change of the carbon dioxide concentration is increased, the gear of the modified atmosphere film is increased;
if the concentration of the carbon dioxide is unchanged, maintaining the current gear of the modified atmosphere film;
and if the change of the carbon dioxide concentration is reduced, the gear of the modified atmosphere film is lowered.
Further, if the carbon dioxide concentration is in the third interval, according to whether the change of the carbon dioxide concentration is an increase, a decrease or a constant, executing a corresponding adjustment strategy on the vacuum pump and the modified atmosphere film, including:
if the change of the carbon dioxide concentration is reduction, maintaining the current gears of the vacuum pump and the controlled atmosphere membrane;
if the carbon dioxide concentration changes to increase or not, adjusting the controlled atmosphere membrane to be in a ventilation state and keeping the controlled atmosphere membrane for a preset time, and then adjusting the gear of the controlled atmosphere membrane to be the gear before the ventilation state;
the adjustable modified atmosphere membrane component further comprises a vent hole and an adjusting piece, the vent hole is used for communicating a fresh-keeping space and an external space in the drawer, the adjusting piece is used for adjusting the effective using area of the modified atmosphere membrane and is also used for adjusting the opening and closing of the vent hole, and the vent hole is opened and is not shielded in the ventilation state.
Further, if the change in the carbon dioxide concentration is a decrease, after maintaining the current gear of the vacuum pump and the modified atmosphere membrane, the method further comprises:
monitoring whether the carbon dioxide concentration remains in the third interval;
if so, keeping the current gears of the vacuum pump and the modified atmosphere film;
and if not, executing a corresponding adjustment strategy according to the interval where the carbon dioxide concentration is located.
The invention also provides a fresh-keeping refrigerator, which comprises:
the drawer is internally provided with a fresh-keeping space which is relatively isolated from air;
the nitrogen-oxygen separation membrane module comprises a nitrogen-oxygen separation membrane module and a vacuum pump, and the nitrogen-oxygen separation membrane module is arranged on the drawer and is used for separating nitrogen and oxygen; the vacuum pump is connected with the nitrogen-oxygen separation membrane module through an exhaust pipe and used for exhausting oxygen in the fresh-keeping space through the nitrogen-oxygen separation membrane module;
the adjustable controlled atmosphere membrane assembly is arranged on the drawer and comprises a controlled atmosphere membrane and an adjusting piece, the adjusting piece is used for adjusting the effective using area of the controlled atmosphere membrane, and the controlled atmosphere membrane is used for adjusting the oxygen concentration and the carbon dioxide concentration of the fresh-keeping space relative to the external space;
and the carbon dioxide concentration sensor is arranged in the drawer and used for monitoring the concentration of the carbon dioxide in the drawer.
Further, the adjustable gas regulating membrane component further comprises a vent hole, the vent hole is used for communicating the fresh-keeping space with the external space, and the adjusting piece is also used for adjusting the opening and closing of the vent hole.
Further, the adjustable modified atmosphere module comprises a substrate, the modified atmosphere film is mounted on the substrate, the vent hole is formed in the substrate, and the adjusting piece is movably arranged on the substrate to adjust the effective use area of the modified atmosphere film and/or adjust the opening and closing of the vent hole.
Further, the adjusting piece is a baffle plate, the baffle plate is slidably arranged on the base plate, and the baffle plate adjusts the effective use area of the modified atmosphere film and/or adjusts the opening and closing of the vent hole in a shielding/avoiding mode.
Further, in the vent state, the baffle plate moves to a position avoiding the vent hole.
The invention also provides a computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the method as described above.
Compared with the traditional controlled atmosphere film preservation drawer, the controlled atmosphere film and the nitrogen-oxygen separation membrane module can be controlled in a linkage mode according to the concentration of carbon dioxide in the drawer, and whether the rotating speed of the vacuum pump needs to be adjusted and the effective use area of the controlled atmosphere film can be judged according to the concentration of the carbon dioxide in the drawer. The oxygen concentration in the drawer is reduced, and meanwhile, the carbon dioxide concentration in the drawer is ensured to be appropriate. Can effectively inhibit the aerobic respiration of fruits and vegetables and avoid the damage caused by the anaerobic respiration of fruits and vegetables.
Drawings
Fig. 1 is an overall structural schematic diagram of an embodiment of a crisper according to the present invention;
FIG. 2 is a schematic structural view of an adjustable modified atmosphere module of the crisper of FIG. 1;
FIG. 3 is a schematic structural view of a nitrogen-oxygen separation membrane module of the crisper of FIG. 1;
fig. 4 is a flowchart of a gas concentration regulating method of a refrigerator according to an embodiment of the present invention;
fig. 5 is a detailed flowchart of a gas concentration controlling method of a refrigerator according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. 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.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in the article or device in which the element is included.
Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
The invention provides a gas concentration regulation and control scheme, which can realize linkage control of a gas regulation membrane and oxygen reduction equipment (nitrogen-oxygen separation membrane component) according to the concentration of carbon dioxide in a drawer, thereby ensuring that the concentration of the carbon dioxide in the drawer is in a proper range, and achieving the purposes of inhibiting aerobic respiration of fruits and vegetables, avoiding damage caused by the anaerobic respiration of the fruits and vegetables and avoiding condensation. The structure of the freshness preservation refrigerator according to the present invention will be described first.
Compared with the traditional modified atmosphere film fresh-keeping drawer, the modified atmosphere film fresh-keeping drawer is provided with the oxygen reduction device (the nitrogen-oxygen separation membrane component) on the structure of the fresh-keeping refrigerator to realize active modified atmosphere, and the modified atmosphere film is arranged, so that oxygen in the air can enter the drawer through the modified atmosphere film to realize passive modified atmosphere.
Fig. 1 shows an embodiment of the crisper of the invention, comprising a drawer 10, a nitrogen-oxygen separation membrane module 20 and an adjustable gas regulating membrane module 30. Wherein, a fresh-keeping space which is relatively isolated from air is formed in the drawer 10, the adjustable gas regulating membrane module 30 is arranged on the drawer 10, and the nitrogen-oxygen separation membrane module 20 is used for separating oxygen from the fresh-keeping space. The modified atmosphere module 30 comprises a modified atmosphere film 31 and a regulating member 32, wherein the regulating member 32 regulates the effective use area of the modified atmosphere film 31, and the modified atmosphere film 31 is used for regulating the oxygen concentration and the carbon dioxide concentration of the fresh-keeping space relative to the external space. It should be noted that a carbon dioxide concentration sensor is further disposed in the drawer 10 for monitoring the carbon dioxide concentration in the drawer. The specific installation position is not shown in fig. 1, and the embodiment is not limited, as long as the installation position is arranged inside the drawer, and the concentration of carbon dioxide in the drawer can be accurately monitored.
It should be noted that the nitrogen-oxygen separation membrane module 21 is at least partially disposed in the fresh food space, and the vacuum pump 22 is disposed in the drawer 10 or outside the drawer 10. Optionally, in the technical solution of this embodiment, the nitrogen-oxygen separation membrane module 21 is at least partially disposed inside the fresh-keeping space, and the vacuum pump 22 may be disposed outside the drawer 10. Wherein, at least one side of the nitrogen-oxygen separation membrane module 21 blocking nitrogen circulation should be ensured to be positioned in the drawer 10 when in use, and it is also feasible that the whole nitrogen-oxygen separation membrane module 21 is positioned in the drawer 10. The vacuum pump 22 is arranged outside the 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 a position adjacent to the drawer 10, or a position far away from the drawer 10, such as a refrigerator liner or a compressor bin, as long as the vacuum pump is connected with the nitrogen-oxygen separation membrane module 21 through the exhaust tube 23. Alternatively, the vacuum pump 22 may be disposed within the drawer 10 such that the vacuum pump 22 exhausts oxygen from the drawer 10 through an exhaust pipe.
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. 2, in the preferred 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 with the external space, and the adjusting member 32 is used for adjusting the opening and closing of the vent hole 33.
As shown in fig. 2, 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 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. It should be noted that, after the vent hole 33 is opened, the fresh food space and the external space are in a complete linkage state, so that the resistance to the flow of air is minimal, and thus the 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. 2, 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 by shielding/avoiding. 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 air-conditioning film 31 needs to be adjusted, the baffle can selectively shield/avoid the action area of the air-conditioning 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. 2, 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.
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. 3, 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 nox separation membrane module 21 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 nox separation membrane module 21 through the exhaust tube 23, the nox separation membrane module 21 only allows oxygen to pass through, and nitrogen remains in the fresh keeping space, and the oxygen separated by the nox separation membrane module 21 is discharged to the outside space through the exhaust tube 23 and the vacuum pump 22.
More preferably, as shown in fig. 3, 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, 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.
In the technical solution of this embodiment, the nitrogen-oxygen separation membrane module 21 includes a plurality of stacked nitrogen-oxygen separation membranes 211 therein, and the exhaust tube 23 is respectively communicated with the oxygen filtration sides of the plurality of nitrogen-oxygen separation membranes 211.
It should be noted that the oxygen reduction principle of the nitrogen-oxygen separation membrane 211 is dissolution-diffusion, oxygen and nitrogen have different dissolution rates and passing rates on the nitrogen-oxygen separation membrane 211, and under the pushing of the vacuum pressure of the vacuum pump 22, oxygen can more easily permeate through the nitrogen-oxygen separation membrane and be discharged at the oxygen-rich end, thereby achieving the effect of rapid oxygen reduction.
The modified atmosphere film 31 is a polymer film, and can perform molecular diffusion movement according to the concentration difference of gas inside and outside the film under normal pressure, and oxygen, carbon dioxide and water molecules respectively have different permeation rates, so that when the concentration of carbon dioxide in the fresh-keeping space is appropriate, the modified atmosphere film plays a role in adjusting the relative stability of the concentration of oxygen, the concentration of carbon dioxide and the humidity in the fresh-keeping space.
Example 2
Based on the preservation refrigerator introduced in the above embodiments, the embodiment provides a gas concentration regulation and control scheme of the refrigerator. Fig. 4 is a flowchart of a gas concentration controlling method of a refrigerator according to an embodiment of the present invention, as shown in fig. 4, the method including the steps of:
step S401, monitoring the concentration of carbon dioxide in a drawer in a closed state of the drawer;
step S402, according to the interval where the concentration of the carbon dioxide is located, executing a corresponding adjusting strategy to adjust the gear of a vacuum pump in the nitrogen-oxygen separation membrane module and the gear of an air-conditioning membrane in the adjustable air-conditioning membrane module; wherein, the initial gears of the vacuum pump and the air-conditioning membrane are intermediate gears. Different gears of the vacuum pump correspond to different gas flow rates, and different gears of the controlled atmosphere film correspond to different effective use areas.
In the embodiment, before monitoring the concentration of carbon dioxide in the drawer, whether the drawer is completely closed needs to be detected; if yes, triggering to monitor the concentration of carbon dioxide in the drawer; otherwise, prompting the user to close the drawer, and monitoring the concentration of carbon dioxide in the drawer after ensuring the drawer to be closed. Thereby guaranteeing the regulation and control effect of the regulation and control scheme of the concentration of the carbon dioxide in the drawer of the refrigerator.
In a specific application, the vacuum pump may be set to two or more gears, for example, a high gear, a middle gear, and a low gear, where the middle gear may be one or more gears, and the higher the gear is, the higher the flow rate of the vacuum pump is, and the higher the speed of drawing off oxygen is. Similarly, the modified atmosphere film can also be provided with two or more gears, such as: a high gear (which may correspond to the modified full open state of the above-described embodiment), a middle gear (which may correspond to the modified state of the above-described embodiment), and a low gear (which may correspond to the fully closed state of the above-described embodiment), where the middle gear may be one or more gears. The higher the shift is, the larger the effective use area of the modified atmosphere film is, and the higher the transmittance of carbon dioxide passing through the modified atmosphere film is.
In this embodiment, the interval in which the concentration of carbon dioxide is located may be divided into a first interval, a second interval, and a third interval; wherein the first interval is: the carbon dioxide concentration is less than a first preset value, and a second interval is as follows: the first preset value is not more than the carbon dioxide concentration and not more than the second preset value, and the third interval is as follows: the carbon dioxide concentration is larger than a second preset value. The second interval is a carbon dioxide concentration interval which is suitable for storing fruits and vegetables and ensures that the fruits and the vegetables are fresh.
After determining the interval of the carbon dioxide concentration, a corresponding adjustment strategy may be executed:
1) if the concentration of the carbon dioxide is in the first interval, the concentration of the carbon dioxide in the drawer is relatively low, the gear of the vacuum pump is adjusted down to slow down the oxygen reduction rate, the inhibition on the respiration of fruits and vegetables is weakened, and the gear of the air-adjusting membrane is kept unchanged, so that the aim of quickly improving the concentration of the carbon dioxide in the drawer is fulfilled by utilizing the respiration of the fruits and vegetables.
2) If the concentration of the carbon dioxide is in the second interval, the concentration of the carbon dioxide in the drawer is proper, the vacuum pump can be controlled to be turned off at the moment, the gear of the air-adjusting membrane is kept unchanged, the balance of the oxygen concentration inside and outside the drawer and the balance of the carbon dioxide concentration are kept through passive air adjustment, and the vacuum pump is turned off, so that the oxygen concentration in the drawer does not fluctuate greatly any more.
3) If the concentration of the carbon dioxide is in the third interval, the fact that the concentration of the carbon dioxide in the drawer is too high is indicated, the gear of the vacuum pump is kept unchanged, the gear of the air-conditioning film is increased to increase the effective using area of the air-conditioning film, the flow of the carbon dioxide inside and outside the drawer is accelerated, the purpose of rapidly reducing the concentration of the carbon dioxide in the drawer is achieved, and damage caused by oxygen-free respiration of fruits and vegetables is avoided.
Based on the scheme, according to the interval where the concentration of the carbon dioxide is located, the corresponding adjusting strategy is executed, and the gear of the vacuum pump in the nitrogen-oxygen separation membrane component and the gear of the modified atmosphere membrane in the adjustable modified atmosphere membrane component are adjusted, so that the concentration of the carbon dioxide in the drawer is adjusted to a proper range as soon as possible, aerobic respiration of fruits and vegetables is effectively inhibited, and damage caused by the anaerobic respiration of the fruits and vegetables is avoided.
After the adjustment strategy is performed, in order to further ensure the preservation effect of the refrigerator, the embodiment provides a preferred implementation manner, that is, the change of the concentration of carbon dioxide in the drawer within a preset time period is monitored; and on the premise that the concentration of the carbon dioxide is in different intervals, executing corresponding adjustment strategies on the vacuum pump and the air-conditioning membrane according to the fact that the concentration of the carbon dioxide is increased, reduced or unchanged.
Namely, the change of the carbon dioxide concentration in the drawer is monitored, and a corresponding further adjustment strategy is executed according to the change of the carbon dioxide concentration. Specifically, the method comprises the following steps:
1) on the premise that the carbon dioxide concentration is in the first interval, the carbon dioxide concentration is too low, and the carbon dioxide concentration needs to be increased.
a. If the carbon dioxide concentration is monitored to be increased, the current state is effective for increasing the carbon dioxide concentration, and the current state does not need to be adjusted, so that the carbon dioxide concentration stably increases until the carbon dioxide concentration exceeds a first preset value. Namely, the current gear of the vacuum pump and the modified atmosphere film is kept.
b. If the carbon dioxide concentration is monitored to be unchanged, the current state is invalid for increasing the carbon dioxide concentration, the gear of the modified atmosphere membrane is adjusted downwards to reduce the effective use area of the modified atmosphere membrane, the transmittance of the carbon dioxide is reduced, and therefore the carbon dioxide concentration in the drawer is increased. And then, continuously monitoring the change of the concentration of the carbon dioxide in the drawer within a preset time period, if the concentration of the carbon dioxide is increased, keeping the current gears of the vacuum pump and the controlled atmosphere film, and if the concentration of the carbon dioxide is not changed, closing the vacuum pump, stopping oxygen reduction, and weakening the inhibition on the respiration of the fruits and vegetables.
After the vacuum pump is turned off, in order to further effectively regulate and control the concentration of the carbon dioxide in the drawer, the change of the concentration of the carbon dioxide in the drawer within a preset time period can be continuously monitored; if the concentration of the carbon dioxide is increased, the current state is effective for increasing the concentration of the carbon dioxide, and the current gears of the vacuum pump and the air-conditioned membrane are kept; if the concentration of the carbon dioxide is not changed, the controlled atmosphere membrane is closed, and the carbon dioxide is prevented from losing through the controlled atmosphere membrane.
It is emphasized that, after the corresponding adjustment strategies are executed on the vacuum pump and the controlled atmosphere membrane according to the condition that the concentration of the carbon dioxide is increased or not changed, whether the concentration of the carbon dioxide is still in the first interval can be further monitored; if so, keeping the current gears of the vacuum pump and the air-conditioning membrane; if not, the process returns to the step S402, and a corresponding adjustment strategy is executed according to the section where the carbon dioxide concentration is located.
2) On the premise that the concentration of the carbon dioxide is in the second interval, the concentration of the carbon dioxide in the drawer is proper.
If the concentration of the carbon dioxide is changed to be increased, the gear of the modified atmosphere film is adjusted to be high so as to increase the effective use area of the modified atmosphere film and improve the transmittance of the carbon dioxide.
If the concentration of the carbon dioxide is unchanged, the current gear of the modified atmosphere film is kept;
if the change of the carbon dioxide concentration is reduced, the gear of the modified atmosphere film is adjusted down to reduce the effective use area of the modified atmosphere film and reduce the transmittance of the carbon dioxide.
3) Under the premise that the concentration of the carbon dioxide is in the third interval, the concentration of the carbon dioxide in the drawer is too high, and the concentration of the carbon dioxide needs to be reduced.
a. If the carbon dioxide concentration is monitored to be reduced, the current state is effective for reducing the carbon dioxide concentration, and the current gears of the vacuum pump and the controlled atmosphere membrane are kept until the carbon dioxide concentration in the drawer is reduced to be less than a second preset value.
b. If the carbon dioxide concentration is monitored to be increased or unchanged, the current state is invalid for reducing the carbon dioxide concentration, and in order to avoid the damage of the fruits and vegetables caused by oxygen-free respiration due to the continuous increase of the carbon dioxide concentration, the air-conditioning film can be adjusted to be in a ventilation state, so that the air inside and outside the drawer is communicated and ventilated. The adjustable gas regulating membrane component comprises a vent hole, the vent hole is used for communicating the fresh-keeping space and the external space in the drawer, the adjusting piece is also used for adjusting the opening and closing of the vent hole, and the vent hole is opened in a ventilation state and is not shielded.
And after the ventilation state is kept for a preset time, the ventilation hole is closed, and the gear of the air adjusting membrane is adjusted to the gear before the ventilation state, so that the concentration of the carbon dioxide in the drawer is recovered to be the same as the concentration of the carbon dioxide in the air outside the drawer. Secondly, monitoring whether the concentration of the carbon dioxide is still in a third interval or not again, and if so, keeping the current gears of the vacuum pump and the controlled atmosphere membrane; if not, the process returns to the step S402, and a corresponding adjustment strategy is executed according to the section where the carbon dioxide concentration is located.
Compared with the traditional modified atmosphere film preservation drawer, the modified atmosphere film and the nitrogen-oxygen separation membrane module can be controlled in a linkage manner according to the concentration of carbon dioxide in the drawer, and whether the rotating speed of the vacuum pump needs to be adjusted and the effective use area of the modified atmosphere film can be judged according to the concentration of the carbon dioxide in the drawer. The oxygen concentration in the drawer is reduced, and meanwhile, the carbon dioxide concentration in the drawer is ensured to be appropriate. Can effectively inhibit the aerobic respiration of fruits and vegetables and avoid the damage caused by the anaerobic respiration of fruits and vegetables.
Example 3
The technical solution of the present invention is described in detail below with reference to the specific embodiments and the accompanying drawings. Fig. 5 is a detailed flowchart of a gas concentration controlling method of a refrigerator according to an embodiment of the present invention, as shown in fig. 5, the flowchart includes the steps of:
and S501, opening the air conditioning function according to the requirement by the user.
Step S502, identifying whether the drawer is tightly closed;
and step S503, if the drawer is not tightly closed, prompting the user to tightly close the drawer.
In step S504, if the drawer is tightly closed, the vacuum pump is started to the L2 gear, and the air adjusting film is started to the S2 gear.
In this embodiment, the vacuum pump is provided with two stages according to the flow rate, i.e., L1 stage and L2 stage, and the flow rate L1 < L2, for example, L1 is 3L/min and L2 is 6L/min. The modified atmosphere film is provided with three stages according to the effective use area, namely S1 stage, S2 stage and S3 stage, the effective use area S1 < S2 < S3, for example, S1 is 250cm2，S2＝450cm2，S3＝650cm2。
Step S505, identifying the oxidation of the oxygen in the drawer by the carbon dioxide concentration sensorCarbon concentration CCO2。
Step S506, the drawer is provided with CCO2< C1, the vacuum pump was adjusted to L1 gear.
In addition, C isCO2C1-C2 are carbon dioxide concentration ranges suitable for storing fruits and vegetables, delta C is a change value of the carbon dioxide concentration in the drawer in a preset time period (for example, 10min), and delta C is equal to Cb-CaIn which C isbIs the current carbon dioxide concentration, CaThe carbon dioxide concentration was 10min before. Δ C ═ 0 indicates no change in carbon dioxide concentration, Δ C > 0 indicates an increase in carbon dioxide concentration, and Δ C < 0 indicates a decrease in carbon dioxide concentration.
And step S507, if the monitored delta C is more than 0, keeping the current state.
In step S508, if Δ C is monitored to be 0, the modified atmosphere film is adjusted to S1.
And step S509, continuing to monitor the Δ C, and if the monitored Δ C is larger than 0, keeping the current state.
And step S510, continuing to monitor Δ C, and if Δ C is monitored to be 0, turning off the vacuum pump.
And step S511, after the vacuum pump is closed, continuously monitoring the delta C, and if the monitored delta C is larger than 0, keeping the current state.
And step S512, after the vacuum pump is turned off, continuing to monitor the delta C, and if the delta C is monitored to be 0, turning off the air-conditioning membrane.
Step S513, monitoring C in real timeCO2And judging CCO2If < C1 is true. If yes, step S514 is executed, and if not, the process returns to step S505.
Step S514, CCO2< C1, the current state is maintained.
To this end, CCO2The corresponding adjustment strategy in the case of < C1 has been fully described. Overall, when the concentration of carbon dioxide in the drawer is low (C)CO2< C1), firstly, the vacuum pump is adjusted from the L2 gear to the L1 gear, the rotating speed of the vacuum pump is reduced, the oxygen reduction rate is slowed down, and the inhibition on the respiration of fruits and vegetables is weakened. Meanwhile, the carbon dioxide concentration is identified once every 10min by a carbon dioxide concentration sensor, and the system calculates 10min later and 10min earlierThe difference in carbon dioxide concentration Δ C. When the deltaC is more than 0, the carbon dioxide concentration is indicated to be in an ascending trend, and the current mode is effective for increasing the carbon dioxide concentration, and the current mode is continuously kept to operate. When Δ C is 0, it indicates that there is no change in the carbon dioxide concentration, and the current mode is not effective for increasing the carbon dioxide concentration, the modified atmosphere film is further adjusted to S1, the effective area of the modified atmosphere film is reduced, the CO2 transmittance is decreased, and Δ C is determined. If the delta C is larger than 0, the current mode operation is kept, if the delta C is equal to 0, the vacuum pump is further closed, the oxygen reduction is stopped, the inhibition on the respiration of the fruits and vegetables is weakened, and the delta C is judged. If deltaC is greater than 0, the current mode operation is kept, and if deltaC is 0, the controlled atmosphere membrane is further closed, so that CO2 is prevented from dissipating through the membrane, and the drawer is in a sealed state. In the linkage control process, whether the concentration of CO2 in the drawer is still less than C1 is monitored in real time, if so, the current mode operation is continuously maintained until the concentration of CO2 is increased to an appropriate concentration, in the embodiment, illustratively, C1 is 2%, and C2 is 5%.
Step S515, C1 is not more than C in drawerCO2C2, turning off the vacuum pump, and keeping the vacuum pump at S2.
And step S516, monitoring that the delta C is less than 0, and adjusting the modified atmosphere film to S1.
And step S517, monitoring that the delta C is 0, and keeping the modified atmosphere film at the S2 level.
In step S518, when the monitored delta C is more than 0, the controlled atmosphere film is adjusted to S3.
So far, C1 is less than or equal to CCO2The corresponding adjustment strategies in the case of ≦ C2 are all introduced, and then the execution returns to step S505. Overall, when the concentration of carbon dioxide in the drawer is appropriate (C1 ≦ CCO2C2) is controlled to be closed, the air adjusting film is opened to S2 grade, and the relative stability of the oxygen and carbon dioxide concentration in the drawer is adjusted through the diffusion movement of the gas inside and outside the air adjusting film.
Step S519, inner drawer CCO2Adjusting the modified atmosphere film to S3 grade if the temperature is higher than C2.
And step S520, monitoring that the delta C is less than 0, and keeping the current state. Step S522 is then performed.
And step S521, monitoring that the delta C is more than or equal to 0, and adjusting the air-conditioned membrane to a ventilation state.
Step S522, monitoring C in real timeCO2And judging CCO2If > C2 is true. If true, step S523 is executed, and if false, step S505 is returned to.
Step S523, CCO2(> C2), the current state is maintained.
To this end, CCO2The corresponding adjustment strategy for the case of > C2 has been fully described. Overall, when the carbon dioxide concentration in the drawer is too high (C)CO2> C2), firstly, the modified atmosphere membrane is adjusted to S3 grade, the effective area of the modified atmosphere membrane is increased, the transmittance of CO2 is increased, and the Delta C is judged. If deltac < 0, indicating that the current mode is effective for reducing the carbon dioxide concentration, the current mode operation is continued. If the delta C is larger than or equal to 0, the current mode is invalid for reducing the concentration of the carbon dioxide, in order to avoid the damage of the fruits and vegetables caused by oxygen-free respiration due to the continuous rise of the concentration of the carbon dioxide, at the moment, the controlled atmosphere film is controlled to move, the drawer is communicated with the air for ventilation, the drawer is closed after 5min, the concentration of the carbon dioxide in the drawer is recovered to the concentration of the air, and then the concentration of the carbon dioxide is identified again.
The embodiment identifies the concentration of the carbon dioxide in the drawer through the carbon dioxide concentration sensor in the drawer, and controls the change of the effective use area of the air-conditioning membrane and the speed regulation and the opening and closing of the vacuum pump according to the difference of the concentration of the carbon dioxide and the variation trend of the concentration. So as to ensure that the fruits and vegetables are in a suitable gas environment, and has important application value.
Example 4
The embodiment of the present invention provides software for implementing the technical solutions described in the above embodiments and preferred embodiments.
The embodiment of the invention provides a nonvolatile computer storage medium, wherein a computer executable instruction is stored in the computer storage medium and can execute a gas concentration regulation and control method of a refrigerator in any method embodiment.
The storage medium stores the software, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
The product can execute the method provided by the embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiment of the present invention.
The above-described embodiments are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (16)

1. A gas concentration regulation method of a refrigerator is characterized by comprising the following steps:
monitoring the concentration of carbon dioxide in the drawer in a closed state of the drawer;
executing a corresponding adjusting strategy according to the interval of the carbon dioxide concentration so as to adjust the gear of a vacuum pump in the nitrogen-oxygen separation membrane module and the gear of an air-conditioning membrane in the adjustable air-conditioning membrane module; wherein the vacuum pump and the initial gear of the air-conditioned membrane are both intermediate gears;
the nitrogen-oxygen separation membrane module comprises a vacuum pump and a nitrogen-oxygen separation membrane module arranged on the drawer, the vacuum pump is used for pumping oxygen through the nitrogen-oxygen separation membrane module, and different gears of the vacuum pump correspond to different speeds of pumping oxygen;
the adjustable gas-regulating membrane assembly is arranged on the drawer and comprises a gas-regulating membrane, the gas-regulating membrane is used for regulating the oxygen concentration and the carbon dioxide concentration of the fresh-keeping space of the drawer relative to the external space, and different gears of the gas-regulating membrane correspond to different effective use areas.
2. The method according to claim 1, wherein the carbon dioxide concentration is in a first interval, a second interval and a third interval; the first interval is that the carbon dioxide concentration is less than a first preset value, the second interval is that the carbon dioxide concentration is less than or equal to a second preset value, and the third interval is that the carbon dioxide concentration is greater than or equal to the second preset value.
3. The method of claim 2, wherein executing a corresponding adjustment strategy according to the interval of the carbon dioxide concentration to adjust the shift of the vacuum pump in the nitrogen-oxygen separation membrane module and the shift of the modified atmosphere membrane in the modified atmosphere membrane module comprises:
if the concentration of the carbon dioxide is in the first interval, the gear of the vacuum pump is turned down, and the gear of the air-adjusting membrane is kept unchanged;
if the concentration of the carbon dioxide is in the second interval, controlling the vacuum pump to be closed, and keeping the gear of the controlled atmosphere membrane unchanged;
and if the concentration of the carbon dioxide is in the third interval, keeping the gear of the vacuum pump unchanged, and increasing the gear of the modified atmosphere film.
4. The method according to claim 2, wherein after executing a corresponding adjustment strategy according to the interval of the carbon dioxide concentration to adjust the shift of the vacuum pump in the nitrogen-oxygen separation membrane module and the shift of the modified atmosphere membrane in the modified atmosphere membrane module, the method further comprises:
monitoring the change of the concentration of carbon dioxide in the drawer within a preset time period;
and on the premise that the concentration of the carbon dioxide is in different intervals, executing corresponding adjustment strategies on the vacuum pump and the controlled atmosphere membrane according to the fact that the concentration of the carbon dioxide is increased, decreased or unchanged.
5. The method of claim 4, wherein if the carbon dioxide concentration is in the first interval, performing corresponding adjustment strategies for the vacuum pump and the modified atmosphere membrane according to whether the change in the carbon dioxide concentration is an increase, a decrease, or a constant, comprises:
if the change of the carbon dioxide concentration is an increase, maintaining the current gears of the vacuum pump and the controlled atmosphere membrane;
if the carbon dioxide concentration is unchanged, the gear of the controlled atmosphere membrane is reduced, the change of the carbon dioxide concentration in the drawer in a preset time period is continuously monitored, if the carbon dioxide concentration is increased, the current gears of the vacuum pump and the controlled atmosphere membrane are kept, and if the carbon dioxide concentration is unchanged, the vacuum pump is closed.
6. The method of claim 5, wherein after turning off the vacuum pump, the method further comprises:
monitoring the change of the concentration of carbon dioxide in the drawer within a preset time period;
if the carbon dioxide concentration is increased, the current gear of the vacuum pump and the modified atmosphere membrane is kept, and if the carbon dioxide concentration is not changed, the modified atmosphere membrane is closed.
7. The method of claim 4 or 5, wherein if the carbon dioxide concentration is in the first interval, after performing the corresponding adjustment strategy for the vacuum pump and the modified atmosphere membrane according to whether the change in the carbon dioxide concentration is an increase, a decrease, or a constant, the method further comprises:
monitoring whether the carbon dioxide concentration is still in the first interval;
if so, keeping the current gears of the vacuum pump and the modified atmosphere film;
if not, executing a corresponding adjustment strategy according to the interval of the carbon dioxide concentration.
8. The method of claim 4, wherein if the carbon dioxide concentration is in the second interval, performing corresponding adjustment strategies for the vacuum pump and the modified atmosphere membrane according to whether the change in the carbon dioxide concentration is an increase, a decrease, or a constant, comprises:
if the change of the carbon dioxide concentration is increased, the gear of the modified atmosphere film is increased;
if the concentration of the carbon dioxide is unchanged, keeping the current gear of the modified atmosphere film;
and if the change of the carbon dioxide concentration is reduced, the gear of the modified atmosphere film is lowered.
9. The method of claim 4, wherein if the carbon dioxide concentration is in the third interval, performing corresponding adjustment strategies for the vacuum pump and the modified atmosphere membrane according to whether the change in the carbon dioxide concentration is an increase, a decrease, or a constant, comprises:
if the change of the carbon dioxide concentration is reduction, maintaining the current gears of the vacuum pump and the controlled atmosphere membrane;
if the carbon dioxide concentration changes to increase or not, adjusting the controlled atmosphere membrane to be in a ventilation state and keeping the controlled atmosphere membrane for a preset time, and then adjusting the gear of the controlled atmosphere membrane to be the gear before the ventilation state;
the adjustable modified atmosphere membrane component further comprises a vent hole and an adjusting piece, the vent hole is used for communicating a fresh-keeping space and an external space in the drawer, the adjusting piece is used for adjusting the effective using area of the modified atmosphere membrane and is also used for adjusting the opening and closing of the vent hole, and the vent hole is opened and is not shielded in the ventilation state.
10. The method of claim 9, wherein if the change in the carbon dioxide concentration is a decrease, after maintaining the current gear of the vacuum pump and the modified atmosphere membrane, the method further comprises:
monitoring whether the carbon dioxide concentration remains in the third interval;
if so, keeping the current gears of the vacuum pump and the modified atmosphere film;
and if not, executing a corresponding adjustment strategy according to the interval where the carbon dioxide concentration is located.
11. A crisper refrigerator, comprising:
the drawer is internally provided with a fresh-keeping space which is relatively isolated from air;
the nitrogen-oxygen separation membrane module comprises a nitrogen-oxygen separation membrane module and a vacuum pump, and the nitrogen-oxygen separation membrane module is arranged on the drawer and is used for separating nitrogen and oxygen; the vacuum pump is connected with the nitrogen-oxygen separation membrane module through an exhaust pipe and used for exhausting oxygen in the fresh-keeping space through the nitrogen-oxygen separation membrane module;
the adjustable controlled atmosphere membrane assembly is arranged on the drawer and comprises a controlled atmosphere membrane and an adjusting piece, the adjusting piece is used for adjusting the effective using area of the controlled atmosphere membrane, and the controlled atmosphere membrane is used for adjusting the oxygen concentration and the carbon dioxide concentration of the fresh-keeping space relative to the external space;
and the carbon dioxide concentration sensor is arranged in the drawer and used for monitoring the concentration of the carbon dioxide in the drawer.
12. The crisper of claim 11, wherein the adjustable gas atmosphere module further comprises a vent for communicating the crisper space with the external space, and the adjusting member is further configured to adjust the opening and closing of the vent.
13. The crisper of claim 12, wherein the tunable gas regulating membrane assembly comprises a substrate, the gas regulating membrane is mounted on the substrate, the vent opening in the substrate, and the tuning element is movably disposed on the substrate to adjust an effective use area of the gas regulating membrane and/or to adjust opening and closing of the vent.
14. The crisper of claim 13, wherein the adjusting member is a baffle plate, the baffle plate is slidably disposed on the base plate, and the baffle plate is shielded/avoided to adjust an effective use area of the modified atmosphere film and/or adjust opening and closing of the vent hole.
15. The crisper refrigerator of claim 14,
in the ventilation state, the baffle plate moves to a position avoiding the ventilation hole.
16. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method according to any one of claims 1 to 10.
CN202110469969.3A 2021-04-28 2021-04-28 Gas concentration regulation and control method for refrigerator and fresh-keeping refrigerator Active CN113137813B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140034385A (en) * 2012-09-10 2014-03-20 동국대학교 산학협력단 Apparatus for preserving agricultural products to maintain beneficial modified atmosphere in container by controlling opening/closing of vent hole through sensing its gas concentration, and method for preserving the same
CN106705536A (en) * 2016-12-02 2017-05-24 青岛海尔股份有限公司 Refrigerator
CN106766565A (en) * 2016-12-02 2017-05-31 青岛海尔股份有限公司 Refrigerator
CN206291616U (en) * 2016-12-02 2017-06-30 青岛海尔股份有限公司 Refrigerator
CN107062763A (en) * 2016-12-09 2017-08-18 青岛海尔股份有限公司 Refrigerator and the container for storing component for refrigerator
CN111156755A (en) * 2020-01-14 2020-05-15 珠海格力电器股份有限公司 Fresh-keeping device and refrigerator
CN212179334U (en) * 2020-05-08 2020-12-18 海信（山东）冰箱有限公司 Refrigerator with a door

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020129709A1 (en) * 2001-03-13 2002-09-19 Lawrence Kunstadt Storage device utilizing a differentially permeable membrane to control gaseous content
CN108759244A (en) * 2018-06-19 2018-11-06 青岛海尔股份有限公司 Refrigerator with control oxygen fresh-keeping function

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140034385A (en) * 2012-09-10 2014-03-20 동국대학교 산학협력단 Apparatus for preserving agricultural products to maintain beneficial modified atmosphere in container by controlling opening/closing of vent hole through sensing its gas concentration, and method for preserving the same
CN106705536A (en) * 2016-12-02 2017-05-24 青岛海尔股份有限公司 Refrigerator
CN106766565A (en) * 2016-12-02 2017-05-31 青岛海尔股份有限公司 Refrigerator
CN206291616U (en) * 2016-12-02 2017-06-30 青岛海尔股份有限公司 Refrigerator
CN107062763A (en) * 2016-12-09 2017-08-18 青岛海尔股份有限公司 Refrigerator and the container for storing component for refrigerator
CN111156755A (en) * 2020-01-14 2020-05-15 珠海格力电器股份有限公司 Fresh-keeping device and refrigerator
CN212179334U (en) * 2020-05-08 2020-12-18 海信（山东）冰箱有限公司 Refrigerator with a door

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