Fresh-keeping chamber structure and fresh-keeping equipment

Abstract

The utility model relates to the technical field of fresh keeping, and provides a fresh keeping chamber structure and fresh keeping device.The fresh keeping chamber structure comprises a chamber body, an air adjusting film assembly and a first baffle, the air adjusting film assembly is arranged on the chamber body, multiple air adjusting areas are defined by the air adjusting film assembly, and air adjusting films corresponding to the air adjusting areas are different in type; the first baffle is movably arranged on the chamber body and suitable for moving relative to the air adjusting film assembly so as to shield at least part of the air adjusting area. A plurality of controlled atmosphere areas are defined by the controlled atmosphere film assembly, each controlled atmosphere area corresponds to different kinds of controlled atmosphere films, and the first baffle can move relative to the controlled atmosphere film assembly to shield at least part of the controlled atmosphere areas, so that the controlled atmosphere film assembly can be adjusted according to physiological characteristics and respiratory rates of different fruits and vegetables. According to the air-conditioning fresh-keeping chamber structure, other air-conditioning areas are shielded and closed, the air-conditioning area corresponding to the most suitable air-conditioning film type is selected to be opened, air components in the chamber body are accurately adjusted, the air-conditioning fresh-keeping requirements of different food materials are met, and the air-conditioning fresh-keeping range of the fresh-keeping chamber structure is widened.

Description

Technical Field

[0001] This application belongs to the field of food preservation technology, and in particular relates to a food preservation compartment structure and food preservation equipment. Background Technology

[0002] In related technologies, different fruits and vegetables have different respiration rates. As the storage period is extended, the respiration rate of food will also change. Therefore, the corresponding modified atmosphere film materials and condition parameters are different. However, existing preservation equipment usually uses a single modified atmosphere film, which cannot meet the modified atmosphere preservation needs of different types of food and has a limited scope of application. Utility Model Content

[0003] This application provides a preservation chamber structure and preservation equipment to solve the problem of the limited applicability of modified atmosphere preservation in existing preservation equipment.

[0004] In a first aspect, embodiments of this application provide a preservation compartment structure, including:

[0005] compartment body;

[0006] A modified atmosphere membrane assembly is disposed in the compartment body, the modified atmosphere membrane assembly defines multiple modified atmosphere zones, and each modified atmosphere zone corresponds to a different type of modified atmosphere membrane;

[0007] A first baffle is movably disposed on the compartment body, and the first baffle is adapted to move relative to the modified atmosphere membrane assembly to block at least a portion of the modified atmosphere area.

[0008] In some embodiments of this application, the modified atmosphere membrane assembly is rectangular, the chamber body is provided with a slide rail, and the first baffle is slidably disposed on the slide rail.

[0009] In some embodiments of this application, the modified atmosphere membrane assembly is circular, the first baffle is rotatably disposed on the chamber body, and the first baffle has a first notch; wherein, the modified atmosphere area directly opposite the first notch is open.

[0010] In some embodiments of this application, the preservation compartment structure further includes a second baffle, which is movably disposed on the compartment body and is used to adjust the effective usable area of ​​the modified atmosphere zone.

[0011] In some embodiments of this application, the second baffle is rotatably disposed on the compartment body, and the rotation axis of the second baffle is coaxially disposed with the rotation axis of the first baffle. The second baffle is provided with a second notch corresponding to the controlled atmosphere area.

[0012] In some embodiments of this application, the preservation compartment structure further includes:

[0013] A first driving component is connected to the first baffle and is used to drive the first baffle to rotate;

[0014] The second driving component is connected to the second baffle and is used to drive the second baffle to rotate;

[0015] And / or, the first baffle and the second baffle are located on opposite sides of the modified atmosphere membrane assembly.

[0016] In some embodiments of this application, the preservation compartment structure further includes:

[0017] The detection device is used to detect the preservation parameters inside the compartment body;

[0018] The controller is connected to the detection device, the first drive unit, and the second drive unit, and is configured to control the operation of the first drive unit and the second drive unit based on the preservation parameters.

[0019] In some embodiments of this application, each of the modified atmosphere regions has the same area, and the multiple modified atmosphere regions are spaced apart.

[0020] In some embodiments of this application, the compartment body includes a box and a cover covering the box. The cover has an installation groove, and the modified atmosphere membrane assembly is installed in the installation groove.

[0021] Secondly, this application also provides a preservation device, which includes the preservation chamber structure as described in the above embodiments.

[0022] The preservation compartment structure provided in this application includes a compartment body, a modified atmosphere film (MAP) assembly, and a first baffle. The MAP assembly is disposed in the compartment body and defines multiple modified atmosphere zones. Each modified atmosphere zone corresponds to a different type of MAP. The first baffle is movably disposed in the compartment body and is adapted to move relative to the MAP assembly to block at least a portion of the modified atmosphere zones. The MAP assembly defines multiple modified atmosphere zones, and each modified atmosphere zone corresponds to a different type of MAP. The first baffle can move relative to the MAP assembly as needed to block at least a portion of the modified atmosphere zones. This allows for the blocking and closing of other modified atmosphere zones and the selection of the most suitable MAP type to open, based on the physiological characteristics and respiration rates of different fruits and vegetables. This accurately adjusts the air composition within the compartment body, meeting the modified atmosphere preservation needs of different types of food and improving the modified atmosphere preservation range of the preservation compartment structure.

[0023] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0024] 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0026] Figure 1 This is a schematic diagram of the structure of the preservation compartment provided in the embodiment of this application.

[0027] Figure 2 This is a schematic diagram of the structure of the modified atmosphere membrane assembly provided in the embodiments of this application.

[0028] Figure 3 This is a front view of the structure of the preservation compartment provided in an embodiment of this application.

[0029] Figure 4 Schematic diagram of the installation of the first baffle and the second baffle provided in the embodiments of this application Figure 1 .

[0030] Figure 5 Schematic diagram of the installation of the first baffle and the second baffle provided in the embodiments of this application Figure 2 .

[0031] Figure 6 This is a schematic diagram of the structure of the compartment body provided in an embodiment of this application.

[0032] Figure 7 A flowchart illustrating the controlled atmosphere method for the preservation compartment structure provided in this application embodiment.

[0033] Figure 8 A schematic diagram illustrating the changes in the modified atmosphere parameters of Shanghai bok choy provided in this application embodiment.

[0034] Figure label:

[0035] 100. Compartment body; 110. Box body; 120. Cover body; 121. Mounting slot;

[0036] 200. Modified atmosphere membrane module; 210. Modified atmosphere zone;

[0037] 300. First baffle; 310. First notch;

[0038] 400. Second baffle; 410. Second notch;

[0039] 500. Detection device; 600. Transmission device. Detailed Implementation

[0040] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0041] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application 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. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0043] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] Modified atmosphere packaging (MAP) refers to controlling the respiration of food (such as meat, fruits and vegetables) by adjusting the gas composition (such as oxygen, carbon dioxide, etc.) inside the packaging, thereby slowing down its physiological metabolic process and extending the shelf life of the food.

[0046] The key to self-regulating atmosphere packaging (PCP) technology is the selection of film materials with specific air permeability for product storage. By utilizing the natural respiration and metabolism of fruits and vegetables, along with the gas permeability of the packaging material, a balance of O2 and CO2 concentrations can be achieved within the packaging environment. This reduces and maintains a minimum level of respiration intensity in the fruits and vegetables, thereby inhibiting respiration and transpiration, slowing physiological metabolism, reducing pathogen infection and storage losses, and ultimately extending the shelf life. Compared to gas-filled PCP, this method is more convenient and lower in cost, making it the most widely used for storing various fruits and vegetables. During PCP, the dynamic changes in the internal gas composition depend on the physiological characteristics of the fruits and vegetables (respiration / transpiration), environmental conditions (temperature and relative humidity), and packaging material parameters (thickness, water vapor / gas permeability). Therefore, selecting PCP film conditions with appropriate gas permeability for the specific type of fruit or vegetable is crucial for maintaining the quality of stored fruits and vegetables.

[0047] Different fruits and vegetables have different respiration rates, which change as storage time increases. Therefore, the appropriate modified atmosphere film (MAP) materials and parameters vary. Some refrigerator drawer designs allow for manual replacement of the MAP type depending on the type of food, but this is relatively complex. Some solutions use sensors to monitor the gas composition inside the crisper compartment, allowing adjustment of the effective MAP area and vacuum pump operation. However, this structure is similar to an inflatable MAP solution, resulting in higher costs and more complex equipment.

[0048] This application provides a preservation chamber structure and preservation equipment to solve the problem of the limited applicability of modified atmosphere preservation in existing preservation equipment. The following will be described in conjunction with the accompanying drawings. Figure 1-8 Please provide an explanation.

[0049] The preservation compartment structure provided in this application embodiment is referenced. Figure 1 and Figure 2 As shown, the device includes a compartment body 100, a modified atmosphere membrane assembly 200, and a first baffle 300. The modified atmosphere membrane assembly 200 is disposed on the compartment body 100 and defines a plurality of modified atmosphere zones 210. Each modified atmosphere zone 210 corresponds to a different type of modified atmosphere membrane. The first baffle 300 is movably disposed on the compartment body 100 and is adapted to move relative to the modified atmosphere membrane assembly 200 to block at least a portion of the modified atmosphere zone 210.

[0050] Understandably, in this embodiment, the compartment body 100 provides a relatively enclosed storage space for storing foods such as fruits, vegetables, and meats that require preservation. A modified atmosphere membrane assembly 200 is installed on the compartment body 100, enabling gas exchange with the outside environment and thus regulating the air composition within the compartment body 100. The modified atmosphere membrane assembly 200 forms multiple independent modified atmosphere zones 210, each zone equipped with a different type of modified atmosphere membrane. Each modified atmosphere membrane has different permeability to meet the respiratory needs of different fruits and vegetables. The first baffle 300 is disposed on the compartment body 100 and can be moved or rotated as needed to cover or expose different modified atmosphere zones 210. This allows users to adjust the position or angle of the first baffle 300 according to the type of food stored in the compartment body 100, opening the most suitable modified atmosphere zone 210 and closing other modified atmosphere zones 210. This allows for precise control of the concentration of oxygen, carbon dioxide and other gases in the compartment body 100, thereby meeting the modified atmosphere preservation requirements of different foods and improving the applicability of the preservation compartment structure.

[0051] For example, the modified atmosphere membrane material can be polyethylene (PE), polycaprolactone (PL), polylactic acid (PLA), polybutylene adipate / terephthalate (PB) and their copolymers, or multilayer composite membranes. The permeability can also be adjusted by controlling and regulating the micropore diameter and number of the modified atmosphere membrane to optimize various performance characteristics. Generally, fresh produce such as fruits and vegetables typically requires membranes with high permeability, while meat and seafood require materials with strong gas barrier properties. Considering the applicability and mechanical and physical properties of modified atmosphere preservation, PLA membranes with different micropore diameters and areas or copolymer membranes with different PE / PL ratios are preferred to adapt to various food types and refrigerator refrigeration environments.

[0052] By configuring different types of modified atmosphere films in each modified atmosphere zone 210, customized modified atmosphere environments can be provided for different fruits and vegetables. Each fruit and vegetable can be stored under conditions most suitable for its physiological characteristics and respiration rate, thereby improving the preservation effect.

[0053] For example, the modified atmosphere film assembly 200 can be spliced ​​together from various modified atmosphere films of different models and materials. By splicing multiple modified atmosphere films into one assembly, the structure of multiple independent modified atmosphere films is avoided. The spliced ​​modified atmosphere film assembly 200 is more compact, reduces the space occupied by the preservation compartment structure, and improves space utilization efficiency.

[0054] In some alternative implementations, refer to Figure 2 As shown, the number of modified atmosphere zones 210 can be 2-6, and the modified atmosphere membrane assembly 200 can adopt a modular design, with each module consisting of a modified atmosphere membrane of a specific model and material, which facilitates quick replacement and adjustment.

[0055] In one alternative embodiment, the modified atmosphere membrane assembly 200 is rectangular, the chamber body 100 is provided with a slide rail, and the first baffle 300 is slidably disposed on the slide rail.

[0056] In this embodiment, the modified atmosphere membrane assembly 200 can be rectangular, and each modified atmosphere region 210 can also be rectangular. The chamber body 100 is provided with a slide rail for the first baffle 300 to move. The first baffle 300 can slide along the slide rail to block or expose different modified atmosphere regions 210.

[0057] When there are two controlled atmosphere zones 210, only one first baffle 300 is needed to selectively open or close the controlled atmosphere zones 210; when there are more than two controlled atmosphere zones 210, two first baffles 300 can also be used to selectively open or close different controlled atmosphere zones 210.

[0058] Furthermore, in this embodiment, when there are two first baffles 300, by adjusting the positions of the two first baffles 300 respectively, not only can the modified atmosphere zone 210 be selectively opened or closed, but the effective usable area of ​​a specific modified atmosphere zone 210 can also be adjusted, and the gas composition in the chamber body 100 can be precisely controlled to adapt to the modified atmosphere preservation of fruits and vegetables with different storage volumes.

[0059] In one alternative implementation, refer to Figure 2 and Figure 4 As shown, the modified atmosphere membrane assembly 200 is circular, and the first baffle 300 is rotatably disposed on the chamber body 100. The first baffle 300 has a first notch 310 and the modified atmosphere area 210 opposite to the first notch 310 is open.

[0060] In this embodiment, the modified atmosphere membrane assembly 200 is circular, and each modified atmosphere region 210 can be a fan-shaped region. The first baffle 300 can also be circular and can rotate around the center of the modified atmosphere membrane assembly 200. The first baffle 300 has a first notch 310, which will sequentially align with different modified atmosphere regions 210 during rotation, thereby opening or closing these modified atmosphere regions 210. By controlling the rotation angle of the first baffle 300, it is possible to precisely control which modified atmosphere regions 210 are opened and the duration of their opening.

[0061] The circular design of the modified atmosphere membrane module 200 and the rotating design of the first baffle 300 can save space and improve space utilization efficiency to the greatest extent.

[0062] In one optional implementation, combined with Figure 1 , Figure 2 and Figure 3 As shown, the structure of the fresh food storage compartment also includes a second baffle 400, which is movably disposed on the compartment body 100 and is used to adjust the effective usable area of ​​the controlled atmosphere zone 210.

[0063] In this embodiment, the second baffle 400 can be disposed on the chamber body 100 by sliding or rotating, and the second baffle 400 can move relative to the modified atmosphere membrane assembly 200 to change the exposed area of ​​the modified atmosphere membrane, thereby controlling the rate and amount of gas exchange to adapt to the respiratory needs of different fruits and vegetables.

[0064] Users can adjust the position of the second baffle 400 manually or automatically according to their preservation needs to increase or decrease the effective area of ​​the modified atmosphere film corresponding to a certain modified atmosphere zone 210. When it is necessary to reduce the gas exchange rate, the exposed area of ​​the modified atmosphere film can be reduced; conversely, when it is necessary to increase the gas exchange rate, the exposed area can be increased.

[0065] The design of the second baffle 400 enhances the adaptability of the preservation compartment to different ingredients, better meeting diverse preservation needs. By precisely controlling the effective usable area of ​​the controlled atmosphere zone 210, unnecessary gas exchange can be reduced, thereby saving energy. Customized adjustment of the controlled atmosphere zone 210 helps provide the optimal preservation environment for each type of fruit and vegetable, effectively inhibiting the respiration and physiological metabolism of the ingredients, delaying the food spoilage process, thereby reducing losses during storage and enhancing the preservation effect.

[0066] In one alternative implementation, refer to Figure 1 , Figure 2 and Figure 5As shown, the second baffle 400 is rotatably disposed on the compartment body 100, and the rotation axis of the second baffle 400 is coaxially disposed with the rotation axis of the first baffle 300. The second baffle 400 is provided with a second notch 410 corresponding to the controlled atmosphere area 210.

[0067] In this embodiment, the second baffle 400 is rotatably disposed on the compartment body 100. For example, the rotation center of the second baffle 400, the rotation center of the first baffle 300 and the center of the modified atmosphere membrane assembly 200 are coaxially disposed, which reduces the adjustment complexity and makes the operation process more intuitive and convenient.

[0068] The second baffle 400 is provided with a second notch 410 corresponding to the modified atmosphere region 210. When the second baffle 400 rotates, the second notch 410 will sequentially cover or expose different modified atmosphere regions 210. The overlapping area of ​​the first notch 310 and the second notch 410 is the effective usable area of ​​the modified atmosphere region 210. When the first notch 310 and the second notch 410 overlap, the modified atmosphere region 210 corresponding to the overlapping part is opened, allowing gas exchange. By adjusting the rotation angle of the first baffle 300 and the second baffle 400, the size of the overlapping area can be changed, thereby adjusting the effective usable area of ​​the modified atmosphere region 210.

[0069] For example, the size of the first notch 310 and the second notch 410 can be slightly larger than the size of the modified atmosphere membrane of a single modified atmosphere region 210 to form a good sealing effect.

[0070] In one alternative implementation, refer to Figure 1 and Figure 5 As shown, the preservation compartment structure also includes a first driving component and a second driving component. The first driving component is connected to the first baffle 300 through a transmission device 600 and is used to drive the first baffle 300 to rotate. The second driving component is connected to the second baffle 400 through a transmission device 600 and is used to drive the second baffle 400 to rotate.

[0071] By setting up a first driving component and a second driving component, the rotation process of the first baffle 300 and the second baffle 400 can be automated, reducing manual operation and improving efficiency. Through the transmission device 600, the positions of the first baffle 300 and the second baffle 400 can be precisely controlled, thereby achieving precise adjustment of the size of the modified atmosphere zone 210 to meet the preservation needs of different fruits and vegetables.

[0072] The first and second driving components can be motors, and the transmission device 600 can be driven by gears, pulleys, hydraulic systems, pneumatic systems or electromagnetic control, etc. This embodiment does not impose specific limitations on this.

[0073] In one alternative implementation, refer to Figure 4As shown, the first baffle 300 and the second baffle 400 are located on opposite sides of the modified atmosphere membrane assembly 200, respectively, to avoid mutual interference between the first baffle 300 and the second baffle 400 during rotation and to improve the stability of the modified atmosphere membrane assembly 200 adjustment.

[0074] In one alternative implementation, refer to Figure 1 As shown, the preservation compartment structure also includes a detection device 500 and a controller. The detection device 500 is used to detect preservation parameters within the compartment body 100. The controller is connected to the detection device 500, the first drive unit, and the second drive unit, and is configured to control the operation of the first drive unit and the second drive unit based on the preservation parameters.

[0075] In this embodiment, the detection device 500 may include, but is not limited to, a gas sensor (to detect the oxygen and carbon dioxide content inside the fresh food storage room), a humidity sensor (to detect the humidity inside the fresh food storage room), and a vision sensor (to determine the type of food inside the fresh food storage room). That is, the freshness parameters may include, but are not limited to, the content of each gas, humidity information, and the type of food.

[0076] When the detection device 500 senses a change in the preservation parameters within the compartment body 100, it can transmit the data to the controller. The controller, based on a preset preservation algorithm or user-defined preferences, issues commands to the first and second driving components to adjust the positions of the first baffle 300 and the second baffle 400, thereby opening or closing different modified atmosphere zones 210 and adjusting their effective usable area, achieving intelligent and automated precise control of the preservation environment.

[0077] In one alternative implementation, refer to Figure 2 As shown, each controlled atmosphere zone 210 has the same area, and multiple controlled atmosphere zones 210 are spaced apart. For example, each sector-shaped controlled atmosphere zone 210 has an equal area and is set up independently at intervals, which facilitates unified adjustment and standardized management.

[0078] In one alternative implementation, refer to Figure 1 and Figure 6 As shown, the compartment body 100 includes a box body 110 and a cover body 120 covering the box body 110. The cover body 120 has an installation groove 121, and the modified atmosphere membrane assembly 200 is installed in the installation groove 121.

[0079] The box body 110 is used to hold fresh ingredients such as fruits, vegetables, meat and seafood. The lid 120 can be opened and closed and is installed on the box body 110. The lid 120 is provided with an installation groove 121, which is used to fix and install the modified atmosphere membrane assembly 200. The position, size and shape of the installation groove 121 can be determined according to the specific requirements of the modified atmosphere membrane assembly 200, which ensures the airtightness of the chamber body 100 and facilitates the installation and replacement of the modified atmosphere membrane assembly 200.

[0080] The preservation compartment structure provided in this application embodiment includes a compartment body 100, a modified atmosphere film assembly 200, and a first baffle 300. The modified atmosphere film assembly 200 is disposed on the compartment body 100 and defines a plurality of modified atmosphere regions 210. Each modified atmosphere region 210 corresponds to a different type of modified atmosphere film. The first baffle 300 is movably disposed on the compartment body 100 and is adapted to move relative to the modified atmosphere film assembly 200 to block at least a portion of the modified atmosphere region 210. The modified atmosphere membrane assembly 200 defines multiple modified atmosphere zones 210, and each modified atmosphere zone 210 corresponds to a different type of modified atmosphere membrane. The first baffle 300 can move relative to the modified atmosphere membrane assembly 200 as needed to block at least part of the modified atmosphere zone 210. This allows for the blocking and closing of other modified atmosphere zones 210 and the opening of the most suitable modified atmosphere zone 210 corresponding to the most suitable type of modified atmosphere membrane, based on the physiological characteristics and respiration rate of different fruits and vegetables. This accurately adjusts the air composition within the compartment body 100, meets the modified atmosphere preservation requirements of different types of food, and improves the modified atmosphere preservation range of the preservation compartment structure.

[0081] Secondly, this application also provides a preservation device, which includes a preservation chamber structure as described in the above embodiments.

[0082] It is understood that the preservation equipment in this embodiment may include, but is not limited to, refrigerators, refrigerated display cases, refrigerated logistics vehicles, cold storage, and other preservation equipment.

[0083] It is understood that if the structure of the preservation chamber has the beneficial effects of the above embodiments, then the preservation equipment will have the corresponding beneficial effects of the above embodiments. The specific implementation method can be referred to the above embodiments, and this embodiment will not repeat it.

[0084] Thirdly, embodiments of this application also provide a method for controlling the structure of a preservation compartment, referring to... Figure 7 As shown, its specific process may include:

[0085] The refrigerator repeatedly checks whether the fresh food compartment is sealed at intervals T1, with a duration of 10s to 30s. If it is not sealed, the refrigerator's main control board sends an alarm to remind the user to close it.

[0086] After the fresh food compartment is sealed, the visual sensor is activated. The main control unit identifies the types of food inside the fresh food compartment and compares them with the food in the database. If the identification fails, the user is prompted to manually enter the food category. If the user fails to enter the food category or the food database does not contain the entered food, feedback is sent to the system and the user is reminded that the freshness effect is limited and the food should be consumed as soon as possible. The user is also advised to refer to similar foods for the next step.

[0087] Based on the parameters of the selected ingredients in the database, it is confirmed whether the type of modified atmosphere film corresponding to the current first baffle matches the corresponding ingredients. If they do not match, the first baffle is adjusted through the transmission device to select a suitable modified atmosphere film.

[0088] At interval T2, the gas and humidity sensors detect the gas composition and humidity in the preservation compartment to confirm whether the current state is within the optimal range for food preservation. T2 lasts from 30 to 120 minutes. If it is, wait for the next test. If not, check whether the current state of the modified atmosphere film is sufficient to adjust it to the appropriate range. If it is within the range, adjust the second baffle through the transmission device to adjust the appropriate effective area of ​​the modified atmosphere film to control the modified atmosphere preservation effect. If it exceeds the range, remind the user that the preservation effect is limited and to consume the food as soon as possible.

[0089] In this embodiment, the changes in oxygen content, carbon dioxide content, and relative humidity inside the storage room of Shanghai bok choy during 10 days of storage were compared through a comparative experiment. The PLA modified atmosphere membrane used was 40 μm thick, with an oxygen permeability of 8.82*10-14 m² / (h·Pa), a carbon dioxide permeability of 2.82*10-13 m² / (h·Pa), and a moisture permeability of 1.08*10-13 g / (cm·s·Pa). Shanghai bok choy with excellent appearance, bright green leaves without obvious wilting, breakage, or yellowing, and a fragrant aroma, and with similar individual differences, were selected. The soil at the roots was washed with clean water, and any moisture that might have adhered to the outside was dried. Experiments were conducted under sealed (without modified atmosphere membrane coverage), automatically regulated conditions, and the maximum modified atmosphere membrane area (approximately 180 cm²). Each experimental group used approximately 1 kg of Shanghai bok choy, with a storage temperature of 4°C and an initial humidity of 65%.

[0090] Figure 8 The data shows the trends in oxygen content, carbon dioxide content, and relative humidity of Shanghai bok choy during storage (where a corresponds to oxygen content, b to carbon dioxide content, and c to relative humidity). With respiration, the sealed group consumed almost all oxygen in the early stages of storage (within 2 days), and the carbon dioxide content gradually accumulated to approximately 30%. On the other hand, due to water loss caused by transpiration, the relative humidity inside the preservation chamber reached a maximum of 100% and remained stable. In the largest area group, due to the larger area of ​​the controlled atmosphere film, the relative humidity inside the preservation chamber had fallen below 90% by the end of storage, which was unfavorable for further storage of Shanghai bok choy.

[0091] In contrast, the automatic adjustment unit can adjust the effective usable area in real time according to the changes in gas composition and relative humidity inside the preservation chamber. In the early stage of storage, it maintains a small controlled atmosphere area to quickly consume oxygen and inhibit aerobic respiration. Subsequently, it increases the controlled atmosphere area to maintain an oxygen ratio of 3% to 5% and controls the relative humidity at around 95%, thereby improving the preservation effect of food.

[0092] By employing visual, gas, and humidity sensors to intelligently identify the applicable conditions for modified atmosphere preservation of food, and automatically adjusting the type of modified atmosphere film and the effective area of ​​use, the scope of application and automation of modified atmosphere preservation have been expanded.

[0093] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate this application and are not intended to limit this application. Although this application has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of this application do not depart from the spirit and scope of the technical solutions of this application and should all be covered within the protection scope of this application.

Claims

1. A preservation compartment structure, characterized in that, include: compartment body; A modified atmosphere membrane assembly is disposed in the compartment body, the modified atmosphere membrane assembly defines multiple modified atmosphere zones, and each modified atmosphere zone corresponds to a different type of modified atmosphere membrane; A first baffle is movably disposed on the compartment body, and the first baffle is adapted to move relative to the modified atmosphere membrane assembly to block at least a portion of the modified atmosphere area.

2. The preservation compartment structure according to claim 1, characterized in that, The modified atmosphere membrane assembly is rectangular, the chamber body is provided with a slide rail, and the first baffle is slidably disposed on the slide rail.

3. The preservation compartment structure according to claim 1, characterized in that, The modified atmosphere membrane assembly is circular, and the first baffle is rotatably disposed on the chamber body, and the first baffle has a first notch; wherein the modified atmosphere area directly opposite the first notch is open.

4. The preservation compartment structure according to claim 3, characterized in that, The preservation compartment structure also includes a second baffle, which is movably disposed on the compartment body and is used to adjust the effective usable area of ​​the modified atmosphere zone.

5. The preservation compartment structure according to claim 4, characterized in that, The second baffle is rotatably mounted on the compartment body, and the rotation axis of the second baffle is coaxially arranged with the rotation axis of the first baffle. The second baffle is provided with a second notch corresponding to the controlled atmosphere area.

6. The preservation compartment structure according to claim 4, characterized in that, The structure of the preservation room also includes: A first driving component is connected to the first baffle and is used to drive the first baffle to rotate; The second driving component is connected to the second baffle and is used to drive the second baffle to rotate; And / or, the first baffle and the second baffle are located on opposite sides of the modified atmosphere membrane assembly.

7. The preservation compartment structure according to claim 6, characterized in that, The structure of the preservation room also includes: The detection device is used to detect the preservation parameters inside the compartment body; The controller is connected to the detection device, the first drive unit, and the second drive unit, and is configured to control the operation of the first drive unit and the second drive unit based on the preservation parameters.

8. The preservation compartment structure according to any one of claims 1-7, characterized in that, Each of the controlled atmosphere zones has the same area, and the multiple controlled atmosphere zones are spaced apart.

9. The preservation compartment structure according to any one of claims 1-7, characterized in that, The compartment body includes a box and a cover covering the box. The cover has an installation groove, and the modified atmosphere membrane assembly is installed in the installation groove.

10. A food preservation device, characterized in that, The preservation equipment includes the preservation chamber structure as described in any one of claims 1-9.

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