Modified atmosphere fresh-keeping device and refrigerator

Abstract

The utility model provides an air-conditioning fresh-keeping device and a refrigerator, and the air-conditioning fresh-keeping device comprises a shell which defines a cavity used for storing food materials; the slow release module comprises a shell and a door body assembly; the shell is connected with the outer shell; a containing cavity is defined by the shell, and the door body assembly is configured to open or close the containing cavity; when the door body assembly opens the containing cavity, the containing cavity communicates with the cavity. When the door body assembly closes the containing cavity, the containing cavity does not communicate with the cavity. Carbon dioxide slow-release particles are arranged in the accommodating cavity; the carbon dioxide sustained-release particles release carbon dioxide under the action of moisture; and the moisture supply assembly is configured to release moisture into the cavity, so that the carbon dioxide slow-release particles release carbon dioxide into the cavity.

Description

Technical Field

[0001] This application relates to the field of refrigerator preservation technology, specifically to a modified atmosphere preservation device and a refrigerator. Background Technology

[0002] Modified atmosphere packaging (MAP) is an important preservation method that requires a low-oxygen, high-carbon dioxide environment. Carbon dioxide plays a crucial role in MAP by inhibiting microbial growth, suppressing respiration, and reducing ethylene production. However, current technologies for generating high concentrations of carbon dioxide in refrigerators typically employ membrane collection, pressure swing adsorption (PSA), and carbon electrolysis rods. The instability of carbon dioxide generated by these methods limits their application in refrigerators. Therefore, a MAP device could be developed to provide a stable source of carbon dioxide. Utility Model Content

[0003] This application provides a modified atmosphere storage device and a refrigerator to facilitate the stable acquisition of carbon dioxide.

[0004] This application provides a modified atmosphere storage device, comprising:

[0005] The outer shell defines a cavity for storing food ingredients;

[0006] A slow-release module includes a housing and a door assembly; the housing is connected to the outer shell; the housing defines a receiving cavity, and the door assembly is configured to open or close the receiving cavity; when the door assembly opens the receiving cavity, the receiving cavity is in communication with the outer shell; when the door assembly closes the receiving cavity, the receiving cavity is not in communication with the outer shell; the receiving cavity contains slow-release carbon dioxide particles; the slow-release carbon dioxide particles release carbon dioxide under the action of moisture;

[0007] A moisture supply assembly configured to release moisture into the cavity to cause the carbon dioxide slow-release particles to release carbon dioxide into the cavity.

[0008] Optionally, the modified atmosphere preservation device further includes an air duct structure; the air duct structure defines an air duct that connects the first moisture outlet of the moisture supply component and the opening of the receiving cavity.

[0009] Optionally, the moisture supply assembly further includes a first fan disposed within the air duct; the first fan is configured to guide moisture from the first moisture outlet to the cavity opening.

[0010] Optionally, the air duct structure is provided with an air outlet, which connects the air duct and the cavity to release the carbon dioxide into the cavity.

[0011] Optionally, the second moisture outlet of the moisture supply assembly is connected to the cavity.

[0012] Optionally, the housing defines at least two receiving cavities; the door assembly is configured to open or close the at least two receiving cavities sequentially or to open or close the receiving cavities individually.

[0013] Optionally, the at least two receiving cavities are arranged sequentially along a preset direction; the door assembly includes a door body and a drive mechanism; the drive mechanism is connected to the door body and is configured to drive the door body to move on the housing along the preset direction and cause the door body to sequentially open or close the at least two receiving cavities.

[0014] Optionally, the door assembly includes a plurality of doors, the number of which is the same as the number of receiving cavities, and the doors and receiving cavities are arranged in a one-to-one correspondence; the doors are configured to be movably connected to the housing to open or close the corresponding receiving cavity.

[0015] Optionally, the modified atmosphere preservation device further includes a carbon dioxide pressure swing adsorption module and a carbon dioxide storage tank, wherein the carbon dioxide pressure swing adsorption module and the carbon dioxide storage tank are disposed on the outer shell; the carbon dioxide storage tank is electrically connected to the carbon dioxide pressure swing adsorption module; and the carbon dioxide storage tank is electrically connected to the cavity.

[0016] Secondly, embodiments of this application also propose a refrigerator, which includes the modified atmosphere preservation device as described above.

[0017] In the technical solution of this application embodiment, the modified atmosphere storage device includes a shell, a slow-release module, and a moisture supply component. The slow-release module is disposed inside the shell, and the shell of the slow-release module is connected to the shell. The housing cavity of the shell contains slow-release carbon dioxide particles. The slow-release carbon dioxide particles release carbon dioxide under the action of moisture. The moisture supply module is used to provide moisture when carbon dioxide is needed. Moisture can enter the housing cavity when the door is opened, so as to release the carbon dioxide in the slow-release carbon dioxide particles, so that a stable carbon dioxide can be obtained in the cavity. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a first structural schematic diagram of the modified atmosphere preservation device provided in the embodiments of this application;

[0020] Figure 2 This is a schematic diagram of the second structure of the modified atmosphere preservation device provided in the embodiments of this application;

[0021] Figure 3 This is a schematic diagram of the third structure of the modified atmosphere preservation device provided in the embodiments of this application;

[0022] Figure 4 This is a schematic diagram of the fourth structure of the modified atmosphere preservation device provided in the embodiments of this application;

[0023] Figure 5 This is a fifth structural schematic diagram of the modified atmosphere preservation device provided in the embodiments of this application;

[0024] Figure 6 This is a schematic diagram of the pressure swing adsorption module in the controlled atmosphere preservation device provided in this application embodiment;

[0025] Figure 7 This is a schematic flowchart of the control method for the modified atmosphere preservation device provided in the embodiments of this application.

[0026] List of reference numerals

[0027] 110 shell 151 Second humidity sensor S1 cavity 152 Carbon dioxide concentration sensor 120 Sustained-release module 153 Second fan 121 case 154 First humidity sensor 122 Door components 160 Carbon dioxide pressure swing adsorption module S2 Receiving cavity 161 First pipeline 130 Moisture supply components 162 Third pipeline 131 First Wind Turbine 170 Carbon dioxide storage tank 132 First moisture outlet 171 Fourth pipeline 133 Second moisture outlet 180 Temporary storage tank 140 air duct structure 181 Second pipeline S3 Air duct Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0031] like Figure 1 As shown in the figure, this application provides a modified atmosphere storage device, comprising:

[0032] The outer shell 110 defines a cavity S1 for storing food ingredients;

[0033] A slow-release module 120 includes a housing 121 and a door assembly 122. The housing 121 is connected to the outer shell 110. The housing 121 defines a receiving cavity S2. The door assembly 122 is configured to open or close the receiving cavity S2. When the door assembly 122 opens the receiving cavity S2, the receiving cavity S2 communicates with the cavity S1. When the door assembly 122 closes the receiving cavity S2, the receiving cavity S2 is not in communication with the cavity S1. The receiving cavity S2 contains carbon dioxide slow-release particles. The carbon dioxide slow-release particles release carbon dioxide under the action of moisture.

[0034] A moisture supply assembly 130 is configured to release moisture into the cavity S1 so that the carbon dioxide slow-release particles release carbon dioxide into the cavity S1.

[0035] In the technical solution of this application embodiment, the modified atmosphere preservation device includes a housing 110, a slow-release module 120, and a moisture supply component 130. The slow-release module 120 is disposed inside the housing 110, and the housing 121 of the slow-release module 120 is connected to the housing 110. The housing 121 contains carbon dioxide slow-release particles in its receiving cavity S2. The carbon dioxide slow-release particles release carbon dioxide under the action of moisture. The moisture supply module is used to provide moisture when carbon dioxide is needed. When the receiving cavity S2 is opened, the moisture can enter the receiving cavity S2 to release the carbon dioxide in the carbon dioxide slow-release particles, so that a stable carbon dioxide can be obtained in the cavity S1.

[0036] The humidity supply assembly 130 includes a humidifier commonly used in refrigerators. This humidifier increases the humidity inside the refrigerator. Therefore, in some embodiments, only the slow-release module 120 is needed to enable the modified atmosphere storage device to obtain a stable supply of carbon dioxide; and compared to existing carbon dioxide generation methods such as membrane collection, pressure swing adsorption, and carbon rod electrolysis, simply adding the slow-release module 120 does not require significant modifications to the refrigerator structure. In some embodiments, the humidifier can be an ultrasonic atomizing device.

[0037] In the technical solution of this application embodiment, the carbon dioxide slow-release particles are pre-prepared particles containing sufficient carbon dioxide gas. The carbon dioxide gas is released from the carbon dioxide slow-release particles under the action of moisture. In some embodiments, the carbon dioxide slow-release particles are sugar particles encapsulating carbon dioxide gas, which can trigger carbon dioxide generation through moisture, producing different concentrations of carbon dioxide gas depending on the humidity. The carbon dioxide sugar particles are pre-prepared and can be interchangeably placed in the receiving cavity S2, such as by being film-coated in the receiving cavity S2, or by being in granular or powder form and removably placed in the receiving cavity S2 after being packaged in a breathable bag. The preparation method of the carbon dioxide sugar particles is as follows: the sugar raw material is heated and melted, and then carbon dioxide gas is injected into the melted syrup under high pressure. The syrup can effectively encapsulate the carbon dioxide gas under high pressure. Afterwards, through a rapid cooling and solidification process, the sugar forms a structure with many small bubbles (encapsulating carbon dioxide). The types of sugar include, but are not limited to, corn syrup, sucrose, sugar, starch syrup, etc.

[0038] In the above embodiments, the door assembly 122 includes a door body and a drive mechanism. The door body is slidably or rotatably connected to the housing 121 for opening or closing the receiving cavity S2. The drive mechanism includes a motor. The motor drives the door body to slide or rotate. The drive mechanism also includes a transmission structure, such as a gear rack or transmission shaft. The motor drives the door body to slide or rotate through the transmission structure to open or close the receiving cavity S2.

[0039] As a technical solution in the above embodiments, such as Figure 2 As shown, the modified atmosphere storage device further includes an air duct structure 140; the air duct structure 140 defines an air duct S3, which connects to the first moisture outlet 132 of the moisture supply component 130 and the opening of the receiving cavity S2. Combined with... Figure 3 and Figure 4 As shown, in this embodiment, moisture is guided from the first moisture outlet 132 into the receiving cavity S2 through the air duct structure 140. The air duct structure 140 restricts moisture diffusion, increasing the moisture concentration within the receiving cavity S2, thereby allowing the slow-release carbon dioxide particles to rapidly release carbon dioxide. In some embodiments, the air duct structure 140 extends from the first moisture outlet 132 to the opening of the receiving cavity S2. The air duct structure 140 can be snapped onto the housing 121 and the first moisture outlet 132 of the humidifier.

[0040] As a technical solution in the above embodiments, such as Figure 5 As shown, the moisture supply assembly 130 also includes a first fan 131, which is disposed within the air duct S3. The first fan 131 is configured to guide the moisture from the first moisture outlet 132 to the cavity opening. The first fan 131 guides the moisture to the cavity opening. Furthermore, by adjusting the rotational speed of the first fan 131, the flow rate of the moisture can be adjusted, thereby adjusting the residence time of the moisture in the air duct S3, and further adjusting the interaction time between the moisture and the carbon dioxide slow-release particles. In some embodiments, when carbon dioxide release is initially required, the rotational speed of the first fan 131 can be adjusted to a higher speed, allowing the moisture to quickly fill the air duct S3 and the receiving cavity S2. At this time, the rotational speed of the first fan 131 can be reduced, allowing the moisture to remain in the air duct S3 and the receiving cavity S2 for a sufficient time while guiding the moisture flow. Then, the rotational speed of the first fan 131 can be increased, allowing the released carbon dioxide to flow quickly into the cavity S1.

[0041] In this embodiment, the first fan 131 is an axial flow fan. The outer casing 110 of the first fan 131 is fixed on the duct structure 140, and the axial direction of the impeller of the first fan 131 is parallel to the axis of the duct S3.

[0042] In the above embodiment, the air duct structure 140 is provided with an air outlet (not shown), which connects the air duct S3 and the cavity S1 to release the carbon dioxide into the cavity S1. In the embodiment, the released carbon dioxide and moisture enter the cavity S1 through the air outlet.

[0043] In the above embodiment, the second moisture outlet 133 of the moisture supply component 130 is connected to the cavity S1. In this embodiment, the moisture supply component 130 has a first moisture outlet 132 and a second moisture outlet 133. The moisture supply component 130 in this embodiment is mainly used to increase the humidity inside the cavity S1. When carbon dioxide needs to be released, the first moisture outlet 132 is opened; when carbon dioxide is not needed, the first moisture outlet 132 can be closed.

[0044] For example, the first moisture outlet 132 can be configured as a first damper (not shown), which is used to open or close the first moisture outlet 132. The second moisture outlet 133 can be configured with a second damper (not shown), which is used to open or close the first moisture outlet 132. In an embodiment, when it is necessary to release carbon dioxide and increase the humidity of the cavity S1, the first moisture outlet 132 and the second moisture outlet 133 can be opened simultaneously. In an embodiment, when it is only necessary to increase the humidity of the cavity S1, the first moisture outlet 132 can be closed and the second moisture outlet 133 can be opened. The outer casing 110 also has a second fan 153 for circulating air in the cavity S1, which promotes the flow of moisture in the cavity S1 and improves the uniformity of humidity.

[0045] In this embodiment, when storing food, the system identifies or manually sets the required humidity level, controls the start of the humidity supply component 130 and the opening of the second humidity outlet 133, and determines whether the humidity supply component 130 needs to be turned off based on the humidity measurement value of the first humidity sensor 154; when the humidity measurement value of the first humidity sensor 154 reaches the required humidity, the humidity supply component 130 is at least turned off, so that the modified atmosphere device can adjust both the carbon dioxide concentration and the humidity in the cavity S1 to preserve the food.

[0046] Meanwhile, when storing food, the system identifies or manually sets the required carbon dioxide concentration, controls the humidifier 130 to start and the first humidifier outlet 132 to open, and determines whether the humidifier 130 needs to be turned off based on the concentration measurement value of the carbon dioxide concentration sensor 152; when the concentration of the carbon dioxide concentration sensor 152 reaches the required concentration, at least the first humidifier outlet 132 is turned off or the door assembly 122 of the receiving cavity S2 is turned off, so that the modified atmosphere device can adjust both the carbon dioxide concentration and the humidity in the cavity S1 to preserve the food.

[0047] As an optional implementation of the above embodiments, combined with Figure 3 and Figure 4 As shown, the housing 121 defines at least two receiving cavities S2; the door assembly 122 is configured to open or close the at least two receiving cavities S2 sequentially or individually. Each receiving cavity S2 contains individual carbon dioxide slow-release particles, and the receiving cavities S2 can be opened sequentially or individually, allowing the next receiving cavity S2 to be opened only after one carbon dioxide slow-release particle has released its carbon dioxide concentration, thus avoiding waste of carbon dioxide slow-release particles.

[0048] As an optional implementation of the above embodiments, such as Figure 3 and Figure 4 As shown, the at least two receiving cavities S2 are arranged sequentially along a preset direction; the door assembly 122 includes a door body and a drive mechanism (not shown); the drive mechanism is connected to the door body and is configured to drive the door body to move along the preset direction on the housing 121, causing the door body to sequentially open or close the at least two receiving cavities S2. In this embodiment, there is only one door body, and the drive mechanism drives the door body to move along the preset direction, thereby opening the receiving cavities S2 sequentially. This allows the next adjacent carbon dioxide slow-release particle to be opened only after the previous one has been released, avoiding waste of carbon dioxide slow-release particles.

[0049] In this embodiment, the preset direction can be the length direction, the width direction, or the circumferential direction. When the preset direction is the length direction or the width direction, the driving structure can be a gear and rack mechanism, with the rack mounted on the door body and the gear connected to the motor, thereby causing the door body to move along the length direction or the width direction. When the preset direction is the circumferential direction, the door body is a disc and is directly driven by the motor shaft; the disc has a notch adapted to the opening of the receiving cavity S2, and when the notch corresponds to the opening of the receiving cavity S2, the receiving cavity S2 is opened and the other receiving cavities S2 are closed; wherein, the housing 121 has a blank area, and when the notch corresponds to the blank area, all receiving cavities S2 are closed.

[0050] As an optional implementation of the above embodiments, such as Figure 2 As shown, the door assembly 122 includes multiple doors, the number of which corresponds to the number of receiving cavities S2, and each door is configured to correspond one-to-one with a receiving cavity S2. Each door is configured to be movably connected to the housing 121 to open or close its corresponding receiving cavity S2. In this embodiment, each receiving cavity S2 has an independent door at its opening. Each door can be opened or closed individually. Each door is driven by a separate motor. In this embodiment, the door of the next receiving cavity S2 can be opened after the previous carbon dioxide slow-release particle has been released, thus avoiding waste of carbon dioxide slow-release particles.

[0051] As an optional implementation of the above embodiments, such as Figure 5 and Figure 6 As shown, the modified atmosphere preservation device also includes a carbon dioxide pressure swing adsorption module 160 and a carbon dioxide storage tank 170, which are mounted on the outer shell 110; the carbon dioxide storage tank 170 is electrically connected to the carbon dioxide pressure swing adsorption module 160; and the carbon dioxide storage tank 170 is electrically connected to the cavity S1. The carbon dioxide pressure swing adsorption (PSA) module 160 is used to adjust the pressure of the sieve tower in the PSA module 160 when the carbon dioxide concentration in the chamber S1 is too high. This allows the carbon dioxide in the chamber S1 to enter the sieve tower through the first pipeline 161 and be adsorbed. The remaining gas that is not adsorbed is then discharged to the temporary storage tank 180 through the second pipeline 181 (the second pipeline 181 is open, and the third pipeline 162 is closed) and then discharged. When the carbon dioxide concentration in the chamber S1 drops to the set required concentration, the pressure of the sieve tower in the PSA module 160 is adjusted again to allow the carbon dioxide in the sieve tower to enter the carbon dioxide storage tank 170 through the third pipeline 162 (the second pipeline 181 is closed, and the third pipeline 162 is open) for storage. The carbon dioxide stored in the carbon dioxide storage tank 170 can be used as a supplement. When the carbon dioxide in the chamber S1 is insufficient, it is released into the chamber S1 through the fourth pipeline 171.

[0052] In some embodiments, the carbon dioxide pressure swing adsorption module 160 can also be connected to the outside world to adsorb carbon dioxide from the outside world to replenish the carbon dioxide in the carbon dioxide storage tank 170.

[0053] The carbon dioxide adsorbents contained in the sieve tower include, but are not limited to, inorganic adsorbents (silica gel, activated alumina, molecular sieves), organic adsorbents (solid ammonia adsorbents), and metal-organic framework materials (MOF-177).

[0054] Based on the modified atmosphere preservation device proposed in the above embodiments, such as Figure 7 As shown in the embodiments of this application, the control method for the modified atmosphere preservation device also includes:

[0055] S100, the required concentration of carbon dioxide to be obtained;

[0056] S200, obtain the first current concentration of carbon dioxide in cavity S1;

[0057] S300, when the first current concentration is lower than the required concentration, control the moisture supply component 130 to open and control the door component 122 to open the receiving cavity S2;

[0058] S400, obtain the first real-time concentration of carbon dioxide in the cavity S1;

[0059] S500, when the first real-time concentration reaches the required concentration, control the door assembly 122 to close the receiving cavity S2.

[0060] In the technical solution of this application embodiment, when the first current concentration of carbon dioxide in the cavity S1 is lower than the required concentration, the moisture supply component 130 is turned on and the door component 122 is controlled to open the receiving cavity S2, so that the carbon dioxide slow-release particles start to release carbon dioxide to replenish the carbon dioxide concentration in the cavity S1. Until the first real-time concentration reaches the required concentration, the door component 122 is controlled to close the receiving cavity S2, so that the carbon dioxide concentration in the cavity S1 reaches the required concentration and meets the preservation requirements of the food.

[0061] In this embodiment, when the first real-time concentration reaches the required concentration, the humidity supply component 130 does not need to be turned off. At this time, it is also necessary to determine whether the humidity in the cavity S1 has reached the required concentration; if so, the humidity supply component 130 is turned off.

[0062] In this embodiment, after the ingredients are placed in the container, the desired concentration is set manually or the system identifies the type of ingredients and then determines the desired concentration based on that type. (When placing ingredients, the identification of ingredients includes, but is not limited to, the following methods: image recognition technology, weight sensor recognition technology, radio frequency identification technology, odor recognition technology, etc.)

[0063] In this embodiment, at least two receiving cavities S2 are defined within the housing 121; the door assembly 122 is configured to be able to open or close the at least two receiving cavities S2 sequentially or to open or close the receiving cavities S2 individually.

[0064] The control of the door assembly 122 to open the receiving cavity S2 includes:

[0065] Based on the required concentration and the first current concentration, determine the required number of accommodating cavities S2 that need to be opened;

[0066] Based on the required quantity, the door assembly 122 is controlled to open the receiving cavity S2 corresponding to the required quantity.

[0067] In some embodiments, the carbon dioxide slow-release particles in one containment cavity S2 may not be sufficient to meet the required concentration after releasing carbon dioxide. Therefore, the carbon dioxide content in the carbon dioxide slow-release particles in one containment cavity S2 is a fixed value. Thus, the required number of containment cavities S2 to be opened is determined based on the required concentration and the first current concentration. Then, based on the required number, the door assembly 122 is controlled to open the containment cavities S2 corresponding to the required number, so that the released carbon dioxide can meet the required concentration.

[0068] Optionally, the control method further includes:

[0069] If the required quantity is N and N is greater than 1, controlling the door assembly 122 to open the receiving cavity S2 corresponding to the required quantity includes:

[0070] The control door assembly 122 opens the first N-1 receiving cavities S2, and controls the moisture supply assembly 130 to operate in the maximum humidity supply mode;

[0071] After the door assembly 122 has opened for N-1 accommodating cavities S2, the second real-time concentration of carbon dioxide in the cavity S1 is obtained.

[0072] The first required humidity is determined based on the difference between the second real-time concentration and the required concentration;

[0073] The humidity supply component 130 is controlled to continue operating in a mode corresponding to the first required humidity, and the Nth containment cavity S2 is opened until the first real-time concentration reaches the required concentration, at which point the door assembly 122 is controlled to close the Nth containment cavity S2.

[0074] In this embodiment, if the required quantity exceeds 1, multiple receiving cavities S2 need to be opened. At this time, the door assembly 122 is controlled to open the first N-1 receiving cavities S2, and the moisture supply assembly 130 is controlled to operate in the maximum humidity supply mode. At this time, under the maximum humidity condition, the carbon dioxide slow-release particles can quickly release carbon dioxide, so that the concentration in the cavity S1 can quickly approach the required concentration. This maximum humidity mode can be that the moisture supply assembly 130 is turned on to the maximum position, or it can be that the first fan 131 is turned on to the maximum position and then adjusted to the lowest position after a preset time (after the first fan 131 is turned on to the maximum position and then operated for a preset time, the moisture quickly fills the air duct S3; after being adjusted to the lowest position, the moisture stays in the receiving cavity S2 for a longer time, which is conducive to the rapid release of carbon dioxide by the carbon dioxide slow-release particles). The reason for leaving one containment chamber S2 open last is that the carbon dioxide slow-release particles in the last containment chamber S2 may not be completely used up, thus ensuring that the first real-time concentration reaches the required concentration. Therefore, the first required humidity is determined based on the difference between the second real-time concentration and the required concentration. The humidity supply component 130 is controlled to continue operating in a mode corresponding to the first required humidity, and the Nth containment chamber S2 is opened until the first real-time concentration reaches the required concentration. At this point, the door component 122 is controlled to close the Nth containment chamber S2. That is, the last containment chamber S2 releases carbon dioxide at the first required humidity level, which conserves carbon dioxide slow-release particles. The mode corresponding to the first required humidity is also achieved by adjusting the fan speed. In this embodiment, a second humidity sensor 151 is installed in the air duct S3. The fan speed is adjusted based on the difference between the humidity measured by the second humidity sensor 151 and the first required humidity, ensuring that the fan speed matches the first required humidity.

[0075] If the required quantity is 1, controlling the door assembly 122 to open the receiving cavity S2 corresponding to the required quantity includes:

[0076] The second required humidity is determined based on the difference between the first current concentration and the required concentration;

[0077] The humidity supply component 130 is controlled to continue operating in a mode corresponding to the second required humidity, and one receiving cavity S2 is opened until the first real-time concentration reaches the required concentration, at which point the door assembly 122 is controlled to close the receiving cavity S2.

[0078] When the required quantity is one, the carbon dioxide slow-release particles in the receiving cavity S2 may not be completely used up, allowing the first real-time concentration to reach the required concentration. Therefore, based on the difference between the first current concentration and the required concentration, a second required humidity is determined. The humidity supply component 130 is controlled to continue operating in a mode corresponding to the second required humidity, and one receiving cavity S2 is opened until the first real-time concentration reaches the required concentration. Then, the door component 122 is controlled to close the receiving cavity S2. The receiving cavity S2 releases carbon dioxide under the second required humidity condition, which can conserve carbon dioxide slow-release particles. The mode corresponding to the second required humidity is also achieved by adjusting the fan speed. In this embodiment, a second humidity sensor 151 is provided in the air duct S3. The fan speed is adjusted by the difference between the humidity measured by the second humidity sensor 151 and the second required humidity, so that the fan speed matches the first required humidity.

[0079] Optionally, at least two receiving cavities S2 are defined within the housing 121; the door assembly 122 is configured to open or close the at least two receiving cavities S2 sequentially or to open or close the receiving cavities S2 individually.

[0080] The control of the door assembly 122 to open the receiving cavity S2 includes:

[0081] The door assembly 122 is controlled to open the Mth receiving cavity S2. After opening the Mth receiving cavity S2, it is determined whether the carbon dioxide concentration in the cavity S1 meets the required concentration. If yes, the door assembly 122 is controlled to close the Mth receiving cavity S2. If no, the door assembly 122 is controlled to open the (M+1)th receiving cavity S2 until the carbon dioxide concentration in the cavity S1 meets the required concentration.

[0082] In this embodiment, the accommodating cavities S2 are opened individually and sequentially. After each accommodating cavity S2 is opened, the carbon dioxide concentration in the cavity S1 is checked to see if it meets the required concentration. If it does, the door assembly 122 is controlled to close the last opened accommodating cavity S2. If not, the door assembly 122 is controlled to open the (M+1)th accommodating cavity S2 until the carbon dioxide concentration in the cavity S1 meets the required concentration. For example, in some embodiments, when the carbon dioxide concentration in cavity S1 is lower than the optimal required concentration: the first fan 131 can be increased to its maximum speed to fill the receiving cavity S2 and the air duct S3 with moisture; as the first cavity S1 continues to release carbon dioxide, the humidity in cavity S1 can be increased by reducing the speed of the first fan 131, allowing the first slow-release sugar granules to release as much carbon dioxide as possible; if it is still lower than the optimal required concentration, the second cavity S1 can be opened; if it is still lower than the optimal carbon dioxide concentration requirement, the above cycle can be repeated until the nth cavity S1 is opened. In each of the above steps, as long as the carbon dioxide concentration sensor 152 detects that the cavity S1 has reached the optimal carbon dioxide concentration requirement, the first moisture outlet 132 and the first fan 131 can be closed, the speed can be increased to reduce the humidity as quickly as possible, the door assembly 122 can be closed, and carbon dioxide can no longer be released.

[0083] The slow-release module 120 operates as follows: The modified atmosphere storage device contains a slow-release module 120, which comprises n chambers S2 (1, 2, 3...n). Each chamber S2 contains 25-50g (the exact weight depends on the volume of the storage drawer and the carbon dioxide release at different humidity levels) of carbon dioxide particles. These particles can be triggered to release different concentrations of carbon dioxide under varying humidity levels; the higher the humidity, the faster and higher the carbon dioxide concentration is released. Humidity control within the slow-release particle module is achieved through the first moisture outlet. Unit 132 works in conjunction with the first fan 131. The second humidity sensor 151 is used to sense the humidity within the containment cavity S2 / air duct S3. For a 10-20L preservation cavity S1, with 25-50g of slow-release granules in each compartment, the carbon dioxide concentration in the slow-release granule module can reach 2.5%-3% at over 90% humidity; 2%-2.5% at 75% humidity; and 1%-1.5% at 60% humidity. When the humidity is below 30%, the slow-release granules no longer release carbon dioxide. In the slow-release granule module, the door opens 1 / n first, then 2 / n, 3 / n...n / n, according to the gas concentration requirements in the preservation drawer, to prevent all granules from being triggered by humidity, causing excessively high carbon dioxide concentrations in the preservation drawer and wasting granules as consumables.

[0084] Optionally, the modified atmosphere preservation device further includes a carbon dioxide pressure swing adsorption module 160 and a carbon dioxide storage tank 170, wherein the carbon dioxide pressure swing adsorption module 160 and the carbon dioxide storage tank 170 are disposed on the outer shell 110; the carbon dioxide storage tank 170 is electrically connected to the carbon dioxide pressure swing adsorption module 160; and the carbon dioxide storage tank 170 is electrically connected to the cavity S1.

[0085] The step of controlling the moisture supply component 130 to open and the door component 122 to open the receiving cavity S2 when the first current concentration is lower than the required concentration includes:

[0086] When the first current concentration is lower than the required concentration, the carbon dioxide storage tank 170 is connected to the cavity S1 to release the carbon dioxide in the carbon dioxide storage tank 170 into the cavity S1;

[0087] After the carbon dioxide in the carbon dioxide storage tank 170 is transferred to the cavity S1, a second current concentration of carbon dioxide in the cavity S1 is obtained;

[0088] When the second current concentration is lower than the required concentration, the moisture supply component 130 is controlled to open and the door component 122 is controlled to open the receiving cavity S2.

[0089] The carbon dioxide stored in the carbon dioxide storage tank 170 can be used as a supplement. When the carbon dioxide in the cavity S1 is insufficient, it is released into the cavity S1 through the fourth pipe 171. That is, when the carbon dioxide concentration in the cavity S1 is insufficient, the gas in the carbon dioxide storage tank 170 can be released first for food preservation. After releasing the carbon dioxide from the carbon dioxide storage tank 170, the moisture supply component 130 is further controlled to open and the door component 122 is controlled to open the receiving cavity S2 to replenish the carbon dioxide.

[0090] In some technical solutions of this application embodiment, carbon dioxide modified atmosphere preservation and carbon dioxide pressure swing adsorption module 160 are combined to compensate for each other's shortcomings. Carbon dioxide pressure swing adsorption module 160 can compensate for the problem that slow-release sugar granules may have a short service life as consumables. Slow-release granules can compensate for the deficiency that it is difficult to purify high concentration carbon dioxide when the carbon dioxide concentration in the air is too low when the pressure swing adsorption device is used alone. The presence of carbon dioxide pressure swing adsorption module 160 can reduce the carbon dioxide concentration in a timely and accurate manner, preventing excessive carbon dioxide concentration during fruit and vegetable storage, which can cause anaerobic respiration and other harms. The humidity supply component 130 (ultrasonic atomizer) has two functions: one outlet is used to control the humidity in the slow-release sugar granule module, and the other outlet is used to control the humidity in the modified atmosphere preservation device.

[0091] This application also proposes a refrigerator, which includes the aforementioned modified atmosphere preservation device or controller, wherein the controller is configured to perform the steps of the control method described above.

[0092] In one embodiment, the modified atmosphere storage device can be used in a refrigerator drawer.

[0093] This application also proposes a control system for a modified atmosphere storage device, comprising: one or more processors; a memory; and one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the control method for the modified atmosphere storage device as described above.

[0094] Typically, the control system of the modified atmosphere storage device includes: at least one processor, at least one memory, and a control program for the control system of the modified atmosphere storage device stored in the memory and executable on the processor. The control program for the control system of the modified atmosphere storage device is configured to implement the steps of the control method described above.

[0095] The processor may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor can be implemented using at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), or PLA (Programmable Logic Array). The processor may also include a main processor and coprocessors. The main processor, also known as a CPU (Central Processing Unit), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor may integrate a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the screen. The processor may also include an AI (Artificial Intelligence) processor, which handles the control method operations of the controlled atmosphere storage device's control system, enabling the control method model of the controlled atmosphere storage device's control system to learn autonomously, improving efficiency and accuracy.

[0096] The memory may include one or more computer-readable storage media, which may be non-transitory. The memory may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In some embodiments, the non-transitory computer-readable storage media in the memory are used to store at least one instruction, which is executed by a processor to implement the control method of the control system of the modified atmosphere preservation device provided in the method embodiments of this application.

[0097] The required concentration of carbon dioxide to be obtained;

[0098] Obtain the first current concentration of carbon dioxide within the cavity;

[0099] When the first current concentration is lower than the required concentration, control the moisture supply component to turn on and control the door component to open the receiving cavity;

[0100] Obtain the first real-time concentration of carbon dioxide within the cavity;

[0101] When the first real-time concentration reaches the required concentration, the door assembly is controlled to close the receiving cavity.

[0102] The housing defines at least two receiving cavities; the door assembly is configured to open or close the at least two receiving cavities sequentially or to open or close the receiving cavities individually.

[0103] The control of the door assembly to open the receiving cavity includes:

[0104] Based on the required concentration and the first current concentration, determine the required number of cavities that need to be opened;

[0105] Based on the required quantity, the door assembly is controlled to open the receiving cavity corresponding to the required quantity.

[0106] The control method further includes:

[0107] If the required quantity is N and N is greater than 1, controlling the door assembly to open the receiving cavity corresponding to the required quantity includes:

[0108] The control door assembly opens the first N-1 receiving cavities, and the control moisture supply assembly operates in the maximum humidity supply mode;

[0109] After the door assembly has opened N-1 accommodating cavities, the second real-time concentration of carbon dioxide within the cavities is obtained.

[0110] The first required humidity is determined based on the difference between the second real-time concentration and the required concentration;

[0111] The moisture supply component is controlled to continue operating in a mode corresponding to the first required humidity, and the Nth containment cavity is opened until the first real-time concentration reaches the required concentration, at which point the door assembly is controlled to close the Nth containment cavity.

[0112] If the required quantity is 1, controlling the door assembly to open the receiving cavity corresponding to the required quantity includes:

[0113] The second required humidity is determined based on the difference between the first current concentration and the required concentration;

[0114] The humidity supply component is controlled to continue operating in a mode corresponding to the second required humidity, and one containment chamber is opened until the first real-time concentration reaches the required concentration, at which point the door assembly is controlled to close the containment chamber.

[0115] The housing defines at least two receiving cavities; the door assembly is configured to open or close the at least two receiving cavities sequentially or to open or close the receiving cavities individually.

[0116] The control of the door assembly to open the receiving cavity includes:

[0117] The door assembly is controlled to open the Mth accommodating cavity. After opening the Mth accommodating cavity, it is determined whether the carbon dioxide concentration in the cavity meets the required concentration. If yes, the door assembly is controlled to close the Mth accommodating cavity. If no, the door assembly is controlled to open the (M+1)th accommodating cavity until the carbon dioxide concentration in the cavity meets the required concentration.

[0118] The modified atmosphere preservation device further includes a carbon dioxide pressure swing adsorption module and a carbon dioxide storage tank, which are mounted on the outer shell; the carbon dioxide storage tank is electrically connected to the carbon dioxide pressure swing adsorption module; and the carbon dioxide storage tank is electrically connected to the cavity.

[0119] The step of controlling the moisture supply component to turn on and controlling the door component to open the receiving cavity when the first current concentration is lower than the required concentration includes:

[0120] When the first current concentration is lower than the required concentration, the carbon dioxide storage tank is connected to the cavity to release carbon dioxide from the carbon dioxide storage tank into the cavity;

[0121] After the carbon dioxide in the carbon dioxide storage tank is transferred to the cavity, a second current concentration of carbon dioxide in the cavity is obtained;

[0122] When the second current concentration is lower than the required concentration, the moisture supply component is controlled to turn on and the door assembly is controlled to open the receiving cavity.

[0123] The modified atmosphere storage device and its control method, refrigerator and storage medium provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A modified atmosphere storage device, characterized in that, include: The outer shell defines a cavity for storing food ingredients; A slow-release module includes a housing and a door assembly; the housing is connected to the outer shell; the housing defines a receiving cavity, and the door assembly is configured to open or close the receiving cavity; when the door assembly opens the receiving cavity, the receiving cavity is in communication with the outer shell; when the door assembly closes the receiving cavity, the receiving cavity is not in communication with the outer shell; the receiving cavity contains slow-release carbon dioxide particles; the slow-release carbon dioxide particles release carbon dioxide under the action of moisture; A moisture supply assembly configured to release moisture into the cavity to cause the carbon dioxide slow-release particles to release carbon dioxide into the cavity.

2. The modified atmosphere storage device as described in claim 1, characterized in that, The modified atmosphere preservation device further includes an air duct structure; the air duct structure defines an air duct, which connects the first moisture outlet of the moisture supply component and the opening of the receiving cavity.

3. The modified atmosphere storage device as described in claim 2, characterized in that, The moisture supply assembly also includes a first fan, which is disposed within the air duct; the first fan is configured to guide moisture from the first moisture outlet to the cavity opening.

4. The modified atmosphere storage device as described in claim 2 or 3, characterized in that, The air duct structure is provided with an air outlet, which connects the air duct and the cavity to release the carbon dioxide into the cavity.

5. The modified atmosphere storage device as described in claim 1, 2, or 3, characterized in that, The second moisture outlet of the moisture supply component is connected to the cavity.

6. The modified atmosphere storage device as described in claim 1, characterized in that, The housing defines at least two receiving cavities; the door assembly is configured to open or close the at least two receiving cavities sequentially or to open or close the receiving cavities individually.

7. The modified atmosphere storage device as described in claim 6, characterized in that, The at least two receiving cavities are arranged sequentially along a preset direction; the door assembly includes a door body and a drive mechanism; the drive mechanism is connected to the door body and is configured to drive the door body to move on the housing along the preset direction and cause the door body to open or close the at least two receiving cavities sequentially.

8. The modified atmosphere storage device as described in claim 6, characterized in that, The door assembly includes a plurality of doors, the number of which is the same as the number of accommodating cavities, and the doors and accommodating cavities are arranged in a one-to-one correspondence; the doors are configured to be movably connected to the housing to open or close the corresponding accommodating cavity.

9. The modified atmosphere storage device as described in claim 1, characterized in that, The modified atmosphere preservation device further includes a carbon dioxide pressure swing adsorption module and a carbon dioxide storage tank, which are mounted on the outer shell; the carbon dioxide storage tank is electrically connected to the carbon dioxide pressure swing adsorption module; and the carbon dioxide storage tank is electrically connected to the cavity.

10. A refrigerator, characterized in that, The refrigerator includes the modified atmosphere preservation device according to any one of claims 1 to 9.

Images