Refrigerator

Abstract

The application provides a refrigerator, which comprises a cabinet, a storage device, a refrigeration unit and a humidifying device; a first moisture-permeable membrane and a first fan are arranged on the side wall of the storage device, the first fan is located on the side close to the storage compartment, and the airflow flowing out of the air outlet of the first fan flows along the surface of the first moisture-permeable membrane; the low-temperature airflow formed by the refrigeration unit flows through the first moisture-permeable membrane; the humidifying device is arranged in the storage cavity and divides the storage cavity into a first cavity for placing food materials and a second cavity defined by the humidifying device; the humidifying device comprises a second moisture-permeable membrane for separating the first cavity and the second cavity, a water storage box with a water valve arranged in the second cavity, a water guide disc matched with the water storage box, and a water absorbing membrane arranged in the water guide disc and adjacent to the second moisture-permeable membrane; the application can efficiently and quickly dehumidify, avoid the loss of moisture of food materials caused by wind blowing due to dehumidification, avoid the mildewing of food materials, improve the moisture-retaining and fresh-keeping effect, increase the humidity through the humidifying device, and effectively improve the overall moisture-retaining and fresh-keeping effect of the refrigerator.

Description

Technical Field

[0001] The present invention belongs to the technical field of refrigerators, and in particular relates to a refrigerator. Background Art

[0002] Currently, there are two major defects in refrigerators with adjustable humidity drawers on the market. First, it is difficult to take into account the humidity control effects of different gears at the same time, and the following situations often occur: for example, the high moisturizing gear has poor moisturizing effect, and leafy vegetables that require a high humidity environment will dry out; or when the drawer is set to the high humidity gear, the humidity in the drawer is too high, resulting in condensation. When set to the medium or low humidity gear, if citrus fruits, melons and other ingredients suitable for medium and low humidity are stored, the high humidity will cause mold.

[0003] In view of this, the present invention is proposed. Summary of the Invention

[0004] In view of the above technical problems, the present invention provides a refrigerator.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A refrigerator comprising:

[0007] a box body defining a storage room;

[0008] A storage device is housed in the storage room; the storage device defines a sealed storage cavity, and a communication port is formed on a side wall of the storage device;

[0009] a first moisture-permeable membrane, which is provided at the communication opening of the storage device;

[0010] a first fan disposed on a side wall of the storage device having the first moisture-permeable membrane and located on a side of the side wall close to the storage compartment; an air outlet of the first fan facing the first moisture-permeable membrane, and air flowing out of the air outlet of the first fan flowing along a surface of the first moisture-permeable membrane;

[0011] a refrigeration unit having a second air outlet corresponding to the position of the first moisture permeable membrane; a low-temperature air flow formed by the refrigeration unit enters the storage room through the second air outlet and flows through the first moisture permeable membrane;

[0012] A humidifying device is provided in the storage cavity; the humidifying device divides the storage cavity into a first cavity for placing food and a second cavity defined by the humidifying device; the humidifying device comprises:

[0013] a second moisture-permeable membrane separating the first cavity and the second cavity;

[0014] A water storage box is disposed in the second cavity; and a water valve is provided on the water storage box;

[0015] A water guide tray cooperates with the water storage box; the water valve controls the water in the water storage box to flow into the water guide tray;

[0016] The water-absorbing film is arranged in the water guide tray and is adjacent to the second moisture-permeable film.

[0017] As an practicable manner, the storage cavity is provided with a second humidity sensor for detecting the humidity in the storage cavity and a plurality of cameras for capturing images of the storage cavity from different angles;

[0018] The refrigerator includes a controller configured to obtain the food space ratio γ and storage humidity R in the storage cavity after the storage device enters the storage mode. N , Storage humidity change rate α r ;

[0019] When γ<γ0 and R N <R Z0 When the water valve is opened, the controller controls the water absorption membrane to absorb water, and the humidity in the storage cavity is increased through the second moisture permeable membrane;

[0020] When γ≥γ0, the controller controls the dehumidification process; where γ0 is the food ratio threshold.

[0021] As an practicable manner, the dehumidification program includes:

[0022] In α r3 ≤α r And R N ≥R Z3 When the controller controls the first fan to operate at the third power P3, the refrigeration unit operates until the storage humidity R in the storage cavity reaches N Reaching the storage humidity threshold R Z0 ;

[0023] Among them, α r3 is the third humidity change rate threshold, R Z3 is the third humidity threshold, R Z0 is the storage humidity threshold in the storage mode, R Z0 <R Z3 .

[0024] As an practicable method, the dehumidification process includes: r2 ≤α r <α r3 And R N ≥R Z2When the first fan is operated at the second power P2, the controller controls the first fan to operate until the storage humidity R N Reaching the storage humidity threshold R Z0 ;

[0025] Among them, α r2 is the second humidity change rate threshold, R Z2 is the second humidity threshold; R Z2 <R Z3 , P2≤P3.

[0026] As an practicable method, the dehumidification process includes: r1 ≤α r <α r2 And R N ≥R Z1 When the controller controls the first fan to operate at the first power P1, the storage humidity in the storage cavity is R N Reaching the storage humidity threshold R Z0 ;

[0027] Among them, α r1 is the first humidity change rate threshold, R Z1 is the first humidity threshold; R Z0 <R Z1 <R Z2 , P1<P2.

[0028] As an implementable manner, the rated power of the first wind turbine is recorded as P0, P1<P0<P2≤P3.

[0029] As an implementable manner, P1=50%P0, P2≤P3=100%P0 or P2≤P3=120%P0.

[0030] As an practicable manner, a second fan is provided in the storage chamber; and the dehumidification process includes:

[0031] In R N ≥R2, the controller controls the second fan to work; wherein R2 is the second dehumidification threshold, R2>R Z2 Or R2>R Z3 .

[0032] As an practicable method, a second fan is provided in the storage chamber; the dehumidification process includes: r2 ≤α r <α r3 And R N ≥R Z2 When or in α r3 ≤α r And R N ≥RZ3 When the controller controls the second fan to operate.

[0033] As an practicable manner, the refrigerator is provided with a plurality of storage modes; storage mode switching, in R N >R Z0 When the controller controls the first fan to operate, the storage humidity in the storage cavity is R N Reaching the storage humidity threshold R of the converted storage mode Z0 .

[0034] Compared with the prior art, the advantages and positive effects of the present invention are:

[0035] The present invention provides a refrigerator, comprising: a box body defining a storage compartment, a storage device housed in the storage compartment, a refrigeration unit, and a controller; the storage device defines a sealed storage cavity, and a communication port is formed on a side wall of the storage device; a first moisture-permeable membrane is provided at the communication port of the storage device; a first fan is provided on the side wall of the storage device having the first moisture-permeable membrane, the first fan is located on a side of the side wall close to the storage compartment, and an air outlet of the first fan faces the first moisture-permeable membrane; air flowing out of the air outlet of the first fan flows along the surface of the first moisture-permeable membrane; the refrigeration unit has a second air supply port corresponding to the position of the first moisture-permeable membrane; low-temperature air flow formed by the refrigeration unit enters the storage compartment through the second air supply port and flows through the first moisture permeable membrane; the humidifying device is arranged in the storage cavity; the humidifying device divides the storage cavity into a first cavity for placing food and a second cavity defined by the humidifying device; the humidifying device includes a second moisture permeable membrane separating the first cavity and the second cavity, a water storage box arranged in the second cavity and having a water valve, a water guide plate matched with the water storage box, and a water absorption membrane arranged in the water guide plate and adjacent to the second moisture permeable membrane; the arrangement of the present invention effectively increases the airflow velocity on the surface of the first moisture permeable membrane by turning on the first fan, thereby dehumidifying efficiently and quickly, avoiding the loss of water from the food due to wind blowing due to dehumidification, enhancing the dehumidification effect, avoiding excessive humidity in the storage cavity causing the food to become moldy, and effectively improving the moisturizing and fresh-keeping effect; in addition, the present invention increases the humidity by the humidifying device, thereby effectively improving the overall moisturizing and fresh-keeping effect of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of the overall structure of the refrigerator of the present invention;

[0037] Figure 2 It is a structural schematic diagram of the storage device of the refrigerator of the present invention;

[0038] Figure 3 This is a schematic structural diagram of the storage device of the refrigerator of the present invention in an open state;

[0039] Figure 4A schematic diagram of a portion of the structure of a storage device of a refrigerator according to the present invention;

[0040] Figure 5 A schematic diagram of a partial structure of a storage device of a refrigerator according to the present invention from another perspective;

[0041] Figure 6 A schematic structural diagram of the storage device of the refrigerator of the present invention from another perspective;

[0042] Figure 7 This is a schematic diagram of the structure of the storage device portion of the refrigerator of the present invention;

[0043] Figure 8 Schematic diagram of the structure of the first moisture permeable membrane and the bracket of the refrigerator of the present invention;

[0044] Figure 9 is a cross-sectional view of a refrigeration unit of a refrigerator of the present invention;

[0045] Figure 10 is a cross-sectional view of the refrigeration unit of the refrigerator of the present invention from another perspective;

[0046] Figure 11 It is a structural schematic diagram of the refrigeration unit of the refrigerator of the present invention;

[0047] Figure 12 A schematic structural diagram of the refrigeration unit of the refrigerator of the present invention from another perspective;

[0048] Figure 13 A schematic diagram of the structure of the storage device and humidifying device of the refrigerator of the present invention;

[0049] Figure 14 A schematic structural diagram of the storage device and humidifying device of the refrigerator of the present invention assembled from another perspective;

[0050] Figure 15 This is a schematic structural diagram of the storage device of the refrigerator of the present invention in an open state;

[0051] Figure 16 Schematic diagram of the structure of the humidifying device of the refrigerator of the present invention;

[0052] Figure 17 Schematic diagram of the constant humidity control method for a refrigerator according to the present invention;

[0053] Figure 18 This is an overall schematic diagram of another embodiment of the constant humidity control method for a refrigerator of the present invention;

[0054] Figure 19 This is an overall schematic diagram of another embodiment of the constant humidity control method for a refrigerator of the present invention;

[0055] Figure 20This is an overall schematic diagram of another embodiment of the constant humidity control method for a refrigerator of the present invention;

[0056] Figure 21 This is an overall schematic diagram of another embodiment of the constant humidity control method for a refrigerator of the present invention.

[0057] In the above figures: storage room 1; storage device 2; storage cavity 3; first moisture-permeable membrane 4; first fan 5; second fan 6; shell 7; drawer 8; bracket 9; box 10; operation panel 11; first side 12; second side 13; cover 14; liner 15, fan accommodating cavity 21; air supply fan 22; first air duct 23; second air duct 24; return air duct 25; first air supply outlet 26; second air supply outlet 27; return air outlet 28; first damper 20; second damper 29; partition plate 30; first cavity 31; second cavity 32; absorbent cotton 33; water storage box 34; water guide plate 35; second moisture-permeable membrane 36; opening 38. DETAILED DESCRIPTION

[0058] The present invention will be further described below with reference to specific embodiments so that those skilled in the art can better understand and implement the present invention. However, the scope of protection claimed in the present invention is not limited to the scope described in the specific embodiments. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other in any manner unless there is a conflict.

[0059] It should be noted that the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of these features.

[0060] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0061] A refrigerator, such as Figures 1-8 As shown, the refrigerator includes an insulated housing 10; the housing 10 includes an outer shell and an inner liner 15. The inner liner 15 defines multiple insulated storage compartments 1 for storing food and other items. In this embodiment, these storage compartments 1 are a refrigerator compartment located at the top and a freezer compartment located at the bottom. The storage compartments 1 can be closed by corresponding doors. It should be noted that the location of the refrigerator and freezer compartments is not limited to an upper and lower arrangement, such as the condensing chamber and the freezer compartment being arranged side by side. Of course, the number of storage compartments is not limited to two.

[0062] A storage device 2 is provided within the storage room 1. The storage device 2 defines a sealed storage cavity 3, and a communication port is formed on one side wall of the storage device 2. A first moisture-permeable membrane 4 is provided at the communication port. A first fan 5 is provided on the side wall of the storage device 2 having the first moisture-permeable membrane 4. The first fan 5 is located on the side of the side wall near the storage room 1. The first fan 5 is adjacent to the first moisture-permeable membrane 4, and the air outlet of the first fan 5 faces the first moisture-permeable membrane 4. The airflow from the air outlet of the first fan 5 flows along the surface of the first moisture-permeable membrane 4. The sealed storage cavity 3 is provided as described above. The storage cavity 3 and the storage room 1 exchange moisture through the first moisture-permeable membrane 4 provided at the communication port, but no gas exchange occurs. This prevents the storage cavity 3 from being affected by airflow in the external environment (the storage room).

[0063] The refrigerator is provided with a controller, and a first humidity sensor is provided in the storage room 1 to monitor the humidity in the storage room 1; in this example, the first humidity sensor is provided on the rear wall of the storage room 1 and corresponds to the position of the storage device 2; a second humidity sensor is provided in the storage cavity 3 to monitor the humidity in the storage cavity 3. When the humidity in the storage cavity 3 is greater than the humidity in the storage room 1 and reaches a first threshold, the controller controls the first fan 5 to operate, and the air flow flowing out of the air outlet of the first fan 5 flows along the surface of the first moisture permeable membrane 4 to flow through the first moisture permeable membrane 4; the air flow on the side of the first moisture permeable membrane 4 close to the storage room 1 is accelerated, and the humidity value outside the sealed storage cavity 3 (especially the first moisture permeable membrane 4) is reduced, forming a large humidity difference, preventing the first moisture permeable membrane 3 from being reduced in efficiency or completely failing so that the water vapor in the storage cavity 3 cannot be discharged, thereby improving the moisture permeability, and thereby reducing the water vapor generated by the food from accumulating inside the storage cavity 3 to form condensation or frost, avoiding condensation in the storage cavity 3 and causing the food to become moldy, and at the same time, preventing the food from being blown by the wind during the dehumidification process and losing moisture; in addition, it can also promote the air flow in the storage room 1 and promote the uniformity of the cooling capacity therein.

[0064] The first humidity threshold is set based on the ideal humidity for the food being stored. When configuring the refrigerator, various thresholds can be preset for different food types and storage volumes, allowing users to choose from a variety of settings, enabling more targeted humidity control.

[0065] As an implementation, an operation panel 11 is provided on the upper wall of the storage device 2, allowing the user to select different storage modes with varying humidity levels. The high humidity setting corresponds to a humidity range of 90% to 98% RH and is suitable for storing leafy vegetables, cauliflowers, fungi, legumes, stone fruits, pome fruits, and berries. The medium humidity setting corresponds to a humidity range of 80% to 90% RH and is suitable for storing root vegetables such as potatoes and sweet potatoes, nightshades, and citrus fruits. The low humidity setting corresponds to a humidity range of 70% to 80% RH and is suitable for storing root vegetables such as onions and garlic, melons, and fruits. This configuration achieves targeted humidity control for food ingredients, improving freshness and product quality, and enhancing the user experience. As an implementation, the storage device 2 includes a housing 7 and a retractable or push-in drawer 8. The operation panel 11 is located on the top wall of the housing 7, near the refrigerator door, for easy user operation.

[0066] In this embodiment, a cover 14 is provided at the communication port, defining a chamber to house the first breathable membrane 4. In this embodiment, the chamber formed by the cover 14 is located on the side wall of the storage device 2, near the rear wall of the storage compartment 1. This prevents the drawer 8 from contacting and damaging the first breathable membrane 4 when fully accommodated within the storage chamber 3. This effectively protects the first breathable membrane 4 from collision and damage from components outside the storage device 2. The cover 14 is formed with multiple ventilation holes to allow airflow from the first blower 5 to pass through and across the surface of the breathable membrane. In this embodiment, the cover 14 is integrally formed with the side wall of the storage device 2 for ease of processing.

[0067] As another feasible method, a second fan 6 is provided in the storage cavity 3 to promote the flow and mixing of air in the storage cavity 3 to prevent condensation from forming in the storage cavity 3 due to excessive humidity, which may cause the food to become moldy.

[0068] When the humidity in the storage chamber 3 exceeds the humidity in the storage room 1 and reaches a second threshold (where the second threshold > the first threshold), the humidity in the storage chamber 3 is even higher. At this point, the first and second fans 5, 6, operate simultaneously. The first fan 5 effectively increases the airflow velocity through the first moisture-permeable membrane 4, effectively increasing the water vapor transmission rate of the first moisture-permeable membrane 4 for rapid dehumidification. The second fan 6 operates to promote mixing of air in the storage chamber 3, preventing condensation from forming in the storage chamber 3 due to excessive humidity, which could cause food mold. The second threshold is set based on the humidity at which mold may occur in the stored food.

[0069] In this embodiment, the second fan 6 is positioned on the side wall of the storage device 2 where the first moisture-permeable membrane 4 is located, adjacent to the first moisture-permeable membrane 4. The outlet of the second fan 6 faces the first moisture-permeable membrane 4, and the airflow from the outlet of the second fan 6 flows along the surface of the first moisture-permeable membrane 4. The airflow from the outlet of the second fan 6 promotes air flow within the storage cavity 3 to prevent condensation caused by excessive humidity. Furthermore, the airflow generated by the second fan 6 flows through the first moisture-permeable membrane 4, accelerating the water vapor transmission rate of the first moisture-permeable membrane 4 and rapidly removing moisture, thereby preventing condensation caused by excessive humidity. This positioning of the second fan 6 accelerates humidity regulation within the storage cavity 3, preventing food from becoming moldy.

[0070] As an practicable approach, the first fan 5 and the second fan 6 are disposed on opposite sides of the same side wall of the storage device 2, with the second fan 6 positioned correspondingly to the first fan 5. When the storage chamber 3 is in a high-humidity environment, the first and second fans 5, 6 operate simultaneously, increasing the airflow velocity on opposite sides of the first moisture-permeable membrane 4, further accelerating the water vapor transmission rate of the first moisture-permeable membrane 4 and accelerating dehumidification.

[0071] In this embodiment, the area defined by the edge of the side wall of the storage device 2 where the first moisture-permeable membrane 4 is located is denoted as S1, and the area of ​​the first moisture-permeable membrane 4 is denoted as S2, where S2:S1∈[0.5,0.8]. This allows the first fan 5, the second fan 6, and the first moisture-permeable membrane 4 to be appropriately positioned on the side wall of the storage device 2 while ensuring that the area of ​​the first moisture-permeable membrane 4 meets the requirements for humidity control.

[0072] In this embodiment, the plane where the air outlet of the first fan 5 or the second fan 6 is located is perpendicular to the plane where the first moisture permeable membrane 4 is located; that is, the airflow flowing out of the air outlet of the first fan 5 or the second air outlet flows parallel to the first moisture permeable membrane 4; so that the airflow flowing out of the air outlet of the first fan or the second fan can flow through more areas of the first moisture permeable membrane 4, thereby improving the overall water vapor permeability of the first moisture permeable membrane 4 and accelerating dehumidification.

[0073] In this embodiment, the first breathable membrane 4 is configured in a rectangular shape; the longer side of the rectangular first breathable membrane 4 is designated as the first side 12, and the shorter side of the rectangular first breathable membrane 4 is designated as the second side 13. The first and second fans 5 and 6 are both positioned adjacent to the shorter second side 13 of the first breathable membrane 4. This ensures that the air outlets of the first and second fans 5 and 6 effectively cover the first breathable membrane 4 while also effectively utilizing the fluidity of the airflow, allowing it to flow fully through the first side 12 of the first breathable membrane 4. Furthermore, the plane of the air outlet of the first and second fans 5 and 6 is parallel to the shorter side of the first breathable membrane 4, effectively ensuring an effective amount of airflow through the first breathable membrane 4 and improving airflow utilization.

[0074] The first moisture-permeable membrane 4 is configured as a rectangle, with the length of its first side 12 denoted as C and the length of its second side 13 denoted as B, where C:B∈[1.2, 1.8]. At this point, the outlet airflow from the first fan 5 and / or the second fan 6 can effectively cover the first moisture-permeable membrane 4 and ensure the airflow velocity through each area of ​​the first moisture-permeable membrane 4, thereby ensuring a high water vapor transmission rate throughout the first moisture-permeable membrane 4.

[0075] Along the second side 13 of the first breathable membrane 4, the size of the air outlet of the first fan 5 is recorded as W1, and the size of the air outlet of the second fan 6 is recorded as W2; W1: B∈[0.3, 0.7], W2: B∈[0.3, 0.7]; the above arrangement can reasonably arrange the first breathable membrane 4 and the fans by limiting the size of the fans and the size of the first breathable membrane 4, and ensure that the airflow flowing out of the air outlet of the first fan 5 and / or the second fan 6 has comprehensive and effective coverage, thereby further improving the overall water vapor transmission rate of the first breathable membrane 4.

[0076] In addition, the normal line of the first breathable membrane 4 passing through the center of the first breathable membrane 4 is recorded as the axis L, the plane where the air outlet of the first fan or the second fan is located is recorded as the air outlet plane P, the distance between the axis L and the air outlet plane P is recorded as D1, and the distance between the edge (second edge 13) adjacent to the air outlet of the first breathable membrane 4 and the first fan or the second fan and the air outlet plane P is recorded as D2, D2: D1∈[1,1.5], so that the airflow flowing out of the air outlet plane maintains effective kinetic energy to flow through the first edge 12 of the first breathable membrane 4, thereby increasing the water vapor permeability of the first breathable membrane 4.

[0077] The center line of the first breathable membrane 4 parallel to the bottom surface of the storage room 1 is recorded as the center line M (in this embodiment, the center line of the rectangle parallel to the first side 12), and the areas of the first breathable membrane 4 located on opposite sides of the center line M are recorded as the first breathable zone and the second breathable zone respectively; wherein, one of the air outlets of the first fan 5 and the air outlets of the second fan 6 faces the first breathable zone, and the other faces the second breathable zone; the airflow blown out by the air outlet of the first fan 5 mainly flows through the breathable zone it faces; the airflow blown out by the air outlet of the second fan 6 mainly flows through the breathable zone it faces; the above arrangement makes the airflow intensity flowing through the entire area of ​​the first breathable membrane 4 uniformly distributed, fully utilizing the first breathable membrane 4 and improving the breathability efficiency. In this embodiment, the first breathable zone is located below the second breathable zone, and the air outlet of the first fan 5 faces the first breathable zone, while the air outlet of the second fan 6 faces the second breathable zone.

[0078] In the above description, the first fan 5 and the second fan 6 are centrifugal fans or vortex fans. In this embodiment, the first moisture-permeable membrane 4 is disposed on the rear wall of the storage cavity 3. Furthermore, the first moisture-permeable membrane 4 is mounted on a bracket 9, which is engaged with the storage device 2 and mounted at the communication opening. Specifically, two first moisture-permeable membranes 4 are provided on the bracket 9, arranged side by side. As a configurable method, the two first moisture-permeable membranes are spaced apart to effectively improve moisture permeation efficiency.

[0079] like Figures 9-12 As shown, a refrigeration unit is installed on the rear wall of storage room 1. The refrigeration unit and the rear wall of storage room 1 together define a return air duct 25. An evaporator (not shown) is installed in return air duct 25 to cool the air passing through it. The refrigeration unit defines a fan housing 21, in which a supply air blower 22 is installed.

[0080] The refrigeration unit defines a first air duct 23 and a second air duct 24 that connect the storage room in which it is located with the fan housing chamber 21. A first air supply port 26 near the upper end of the refrigeration unit, a second air supply port 27 near the lower end of the refrigeration unit, and a return air port 28 connected to the return air duct 25 are formed on the front side of the refrigeration unit. The second air supply port 27 corresponds to the first moisture-permeable membrane 4 on the storage device 2, and the return air port 28 is located below the second air supply port 27. The first air duct 23 connects the fan housing chamber 21 and the first air supply port 26, so that the low-temperature airflow that passes through the evaporator enters the storage room 1 from the top of the storage room. The low-temperature air sent out by the first air supply port 26 passes through the storage room 1, enters the return air duct 25 through the return air port 28 at the bottom, and enters the fan housing chamber 21 after being cooled by the evaporator.

[0081] The second air duct 24 connects the fan chamber 21 with the second air supply port 27. The low-temperature air entering the storage room 1 through the second air supply port 27 flows through the first moisture-permeable membrane 4 and returns to the return air duct 25 through the return air port 28. After being cooled by the evaporator, it enters the fan chamber 21. This creates a localized low-temperature air circulation around the first moisture-permeable membrane 4, effectively affecting the water vapor transmission rate of the first moisture-permeable membrane 4 and promoting dehumidification. At the same time, this localized low-temperature air circulation reduces its impact on the temperature within the storage room.

[0082] In this embodiment, a first damper 20 for connecting or disconnecting the fan accommodating chamber 21 and the storage room 1 is provided in the first air duct 23 , and a second damper 29 for connecting or disconnecting the fan accommodating chamber 21 and the storage room 1 is provided in the second air duct 24 .

[0083] When the temperature inside storage room 1 (outside storage chamber 3) changes, the water vapor pressure and chemical potential energy of the air outside first moisture-permeable membrane 4 also change. The potential energy difference between the inside and outside of first moisture-permeable membrane 4 causes water to spontaneously transfer until the humidity inside storage chamber 3 reaches equilibrium with the humidity of the air outside of storage chamber 1. This method changes the humidity inside storage chamber 3. When the second humidity sensor inside storage chamber 3 detects that the actual humidity inside storage chamber 3 matches the set humidity threshold (humidity level), the humidity adjustment process is completed and the second damper 29 closes. The temperature inside storage room 1 is maintained within a constant range, and the humidity inside storage chamber 3 also remains in a humidity equilibrium state, maintaining a constant humidity.

[0084] The technical principle of the first moisture permeable membrane is to utilize the transfer-equilibrium process of water under the difference of chemical potential in different environments.

[0085] The chemical potential difference is ΔM=M o -M i =R(T o lnp o -T i lnp i ), where P is water vapor pressure, T is temperature, and o and i are the corresponding parameters of the outer side of the first moisture permeable membrane and the inner side of the storage cavity, respectively.

[0086] If ΔM>0, the transfer of water vapor from the outside of the first moisture-permeable membrane to the storage chamber is a spontaneous process. In order to reach an equilibrium state, the humidity in the storage chamber 3 will increase until ΔM=0.

[0087] If ΔM=0, the water vapor outside the first moisture-permeable membrane is in a dynamic equilibrium state, and the humidity in the storage cavity will neither increase nor decrease.

[0088] If ΔM<0, the transfer of water vapor in the storage cavity to the outside of the first moisture-permeable membrane is a spontaneous process. In order to reach an equilibrium state, the humidity in the storage cavity 3 will decrease until ΔM=0.

[0089] During specific use, the user selects an appropriate humidity level according to the food ingredients, and the second humidity sensor obtains the real-time humidity in the storage cavity 3. If the actual humidity in the storage cavity 3 is within the range threshold of the set level humidity, no adjustment is made.

[0090] If the actual humidity in the storage chamber 3 is greater than the range threshold of the set gear humidity, dehumidification is required; the air supply fan 22 is started, and the second air door 29 is opened. The second air duct 24 connects the fan accommodating chamber 21 and the storage room 1. The low-temperature air enters the storage room 1 through the second air supply port 27 and flows through the first moisture permeable membrane 4; then returns to the return air duct 25 through the return air port 28, and enters the fan accommodating chamber 21 after being cooled by the evaporator; thereby forming a local low-temperature air circulation around the first moisture permeable membrane, so as to reduce the air temperature outside the first moisture permeable membrane 4; at this time, T o ↓, while T o ↓Then p o ↓, and according to ΔM=M o -M i =R(T o lnp o -T i lnp i ) analysis shows that M o If ΔM < 0, the water vapor in the storage cavity 3 will spontaneously migrate toward the outside of the first moisture-permeable membrane 4 until ΔM = 0. This localized low-temperature airflow effectively promotes the rapid permeation of water vapor from the storage cavity 3 through the first moisture-permeable membrane 4 into the storage room 1, and quickly removes water vapor from the storage cavity 3, effectively accelerating the dehumidification rate and achieving rapid humidity control. Furthermore, through heat exchange, the temperature in the storage cavity is lowered, creating a cooler storage space suitable for storing fresh produce.

[0091] During the dehumidification process, the second humidity sensor again determines whether the actual humidity in the storage chamber is within the set humidity threshold. If so, the humidity adjustment process is complete. If the humidity is still above the set humidity, the second air duct 24 will continue to lower the air temperature outside the first moisture-permeable membrane 4, continuing the humidity adjustment process until the second humidity sensor detects that the actual humidity in the storage chamber 3 is within the set humidity threshold.

[0092] like Figure 13-16 As shown, a humidifier is installed in the drawer; in this embodiment, the humidifier is installed at the front end of the drawer 8. Specifically, the interior of the drawer 8 is divided into a first chamber 31 for placing items and a second chamber 32 defined by the humidifier; the first chamber 31 and the second chamber 32 are separated by a partition 30. In this embodiment, the second chamber 32 is located in front of the first chamber 31.

[0093] Specifically, the partition plate 30 is provided with an opening 38 connecting the first chamber 31 and the second chamber 32, and a second moisture-permeable membrane 36 is provided at the opening 38. The water storage box 34 is connected to a water guide plate 35, and a water-absorbing cotton 33 is provided in the water guide plate 35. The water-absorbing cotton 33 is arranged adjacent to the second moisture-permeable membrane 36, and the water-absorbing cotton 33 and the second moisture-permeable membrane 36 have the same shape. The water storage box 34 is provided with a water valve to control the amount of water flowing from the water storage box into the water guide plate 35. When the amount of food in the storage chamber 3 is relatively small, the moisture of the food will be released to the surrounding area of ​​the storage chamber. This may cause the food to lose water. The humidification device can promptly increase the humidity in the storage chamber to improve the freshness of the food. Specifically, active humidification is performed when the amount of food in the storage chamber 3 is relatively small. During active humidification, the water valve is opened to ensure sufficient water in the water guide tray 35. The absorbent cotton 33 absorbs moisture, which is located on one side of the second moisture-permeable membrane 36. This effectively increases the humidity on the side of the second moisture-permeable membrane 36 closest to the second chamber 32, disrupting the humidity balance on the opposite sides of the second moisture-permeable membrane 36. Water vapor flows from the second chamber 32 through the second moisture-permeable membrane 36 into the first chamber 31, thereby increasing the humidity in the first chamber 31 and effectively ensuring the freshness of the food. During inactive humidification, the water valve is closed to prevent the absorbent cotton 33 from constantly absorbing water and affecting the humidity in the first chamber.

[0094] In this embodiment, the humidifier includes a housing defining a second chamber 32. The rear wall of the housing forms a partition 30 separating the first chamber 31 from the second chamber 32, with an opening 38 formed therein. A water storage box 34, a water guide plate 35, and absorbent cotton 33 are all mounted within the housing. This makes the humidifier a self-contained module, making installation and removal easier.

[0095] In this embodiment, the storage device 2 is installed in the refrigerator, and the humidity in the refrigerator is within the range of 3°C to 8°C. Since the storage cavity 3 exchanges water vapor with the refrigerator through the first moisture-permeable membrane 4, in the normal mode, the humidity in the storage cavity 3 mainly comes from the transpiration of fruits and vegetables themselves, and the relative humidity in the storage cavity 3 reaches 80%-90%.

[0096] According to the different food items stored in the storage device 2, the humidity requirements for the storage cavity 3 are different. In this embodiment, the refrigerator is provided with multiple storage modes, and the operation panel 11 allows the user to select a storage mode to adjust the humidity in the storage cavity 3 in a targeted manner. In this embodiment, as mentioned above, the operation panel 11 is provided with a plurality of humidity buttons, so that the user can select the storage humidity in the storage cavity 3 that is most suitable for preserving food items. N >R Z0 When the humidity in the storage chamber 3 reaches the set storage humidity threshold R, the first fan is controlled to operate to adjust the humidity in the storage chamber 3 to reach the set storage humidity threshold R Z0(Humidity threshold corresponding to the set gear). Specifically, as mentioned above, the operation panel is set with high humidity gear, medium humidity gear, and low humidity gear; among them, the high humidity gear corresponds to the high humidity storage mode, the medium humidity gear corresponds to the medium humidity storage mode, and the low humidity gear corresponds to the low humidity storage mode; each set humidity gear is set with its own corresponding storage humidity threshold R Z0 . Above the storage humidity threshold R Z0 When the humidity range is used as the threshold, a value greater than the maximum value of the range is determined to be above the humidity threshold, a value lower than the minimum value of the humidity range is determined to be below the humidity threshold, and a value within the range is determined to be at the threshold.

[0097] In the set storage mode, the second humidity sensor monitors the storage humidity R in the storage cavity 3. N , and promptly start the first fan to adjust the water vapor transmission rate of the first moisture permeable membrane 4 by increasing the air flow speed on the surface of the first moisture permeable membrane 4, thereby effectively adjusting the humidity in the storage chamber 3, and finally maintaining the humidity in the storage chamber 3 constant (the humidity is maintained within the set range). Above, the humidity in the storage chamber monitored by the second humidity sensor is recorded as storage humidity R N .

[0098] In the present invention, a plurality of cameras are provided in the storage cavity 3, and the plurality of cameras capture images of the storage cavity from different angles. In this embodiment, the controller is configured to obtain the food space ratio γ and storage humidity R in the storage cavity after the storage device enters the storage mode. N , Storage humidity change rate α r ; Among them, the controller obtains the food space ratio γ, storage humidity change rate α rThis is prior art and will not be described in detail here. As an operative method, the controller may be configured to obtain the food space proportion γ as follows: the controller includes an acquisition module, a matching module, and a calculation module. The acquisition module is configured to acquire images of the storage cavity taken from different angles by multiple cameras, and pair them up to obtain multiple pairs of images; an extraction module is coupled to the acquisition module and configured to extract multiple feature points from each image; a matching module is coupled to the extraction module and configured to match each feature point of one image with all feature points of the other image in the same pair of images to obtain a matched feature point pair; and a calculation module is coupled to the matching module and configured to calculate the proportion of the item in the item space using the matched feature point pairs. The present invention provides multiple cameras and uses the cameras to capture images of the food in the storage cavity from different angles, thereby obtaining images of the item at different angles. Feature points are then matched based on the images at different angles to improve the accuracy of the measurement result, accurately locate the spatial position information of the food, and estimate the proportion of the food in the storage cavity based on the matched feature points, thereby obtaining a highly accurate measurement result. Furthermore, capturing images of the item at different angles avoids visual blind spots, making the final measurement result more accurate.

[0099] like Figure 17 As shown, when γ<γ0 and R N <R Z0 When the water valve is opened, the controller controls the water absorption membrane to absorb water, and the humidity in the storage chamber is increased through the second moisture-permeable membrane. When the food space in the storage chamber exceeds the set food space threshold, the food will release moisture to the surrounding area of ​​the storage chamber due to the small amount of food. This may cause the food to lose water. The humidification device can promptly increase the humidity in the storage chamber to improve the food freshness preservation effect.

[0100] When γ ≥ γ 0, the controller initiates the dehumidification process, where γ 0 represents the threshold for the food content. When the food content in the storage chamber exceeds the threshold, the large amount of food can significantly impact the humidity within the chamber, causing rapid changes in humidity and disrupting the constant humidity state. The present invention provides a dehumidification process to promptly adjust the humidity to maintain a constant humidity level.

[0101] The dehumidification program includes:

[0102] In α r1 ≤α r <α r2 And R N ≥R Z1 When the controller controls the first fan to operate at the first power P1, the storage humidity in the storage chamber is R N Reaching the storage humidity threshold R Z0 ; Among them, αr1 is the first humidity change rate threshold, α r2 is the second humidity change rate threshold, R Z0 is the storage humidity threshold in the storage mode, R Z1 is the first humidity threshold; R Z0 <R Z1 .

[0103] As an implementable approach, in α r2 ≤α r <α r3 And R N ≥R Z2 When the controller controls the first fan to operate at the second power P2, the storage humidity in the storage chamber is R N Reaching the storage humidity threshold R Z0 ; Among them, R Z2 is the second humidity threshold; R Z1 <R Z2 , P2>P1.

[0104] As another possible implementation, in α r3 ≤α r And R N ≥R Z3 When the controller controls the first fan to operate at the third power P3, the refrigeration unit operates until the storage humidity in the storage cavity reaches R N Reaching the storage humidity threshold R Z0 ; Among them, R Z3 is the third humidity threshold, R Z0 <R Z3 Among them, R Z0 <R Z1 <R Z2 <R Z3 , P1<P2≤P3.

[0105] As an practicable manner, the rated power of the first wind turbine is recorded as P0, P1 < P0 < P2; specifically, P1 = 50% P0, P2 ≤ P3 = 100% P0 or P2 ≤ P3 = 120% P0. In this embodiment, P1 = 50% P0, P2 = P3 = 100% P0 or P2 = P3 = 120% P0.

[0106] Under different humidity change rates and real-time humidity conditions, the above controller controls the first fan to operate at different powers. On the one hand, it can quickly adjust the humidity; on the other hand, it can reasonably control the fan operating power to reduce energy consumption; furthermore, it controls the first fan and the refrigeration unit to operate simultaneously to effectively improve the dehumidification efficiency. Under the above set humidity conditions, the controller controls the operation of the first fan to speed up the air flow on the side of the first moisture permeable membrane close to the storage room (outside the storage cavity), reduce the humidity value outside the sealed storage cavity (especially the first moisture permeable membrane), form a large humidity difference, prevent the first moisture permeable membrane from reducing efficiency or completely failing so that the water vapor in the storage cavity cannot be discharged, increase the moisture permeability, and thus reduce the water vapor generated by the food to gather inside the storage cavity to form condensation or frost, avoid condensation in the storage cavity and cause the food to become moldy, and at the same time prevent the food from being blown by the wind during the dehumidification process and causing water loss; in addition, it can also promote air flow in the storage room and promote the uniformity of its internal cooling capacity. In α r3 ≤α r And R N ≥R Z3 When (in this embodiment, combined with α r1 , α r2 The humidity change rate is in a state of rapid increase and the humidity value is very high), the first fan and the refrigeration unit are operated simultaneously to increase the chemical potential difference between the inside and outside of the storage cavity 3 (ΔM=M o -M i =R(T o lnp o -T i lnp i )), thereby increasing the spontaneous migration rate of water vapor in the storage cavity to the outside of the first moisture permeable membrane, improving dehumidification efficiency, and quickly reaching a constant humidity; effectively ensuring the constant humidity in the storage cavity. It should be noted that in the present invention, α r3 ≤α r And R N ≥R Z3 The setting is based on the setting at the time, and α is set according to the specific situation. r1 ≤α r <α r2 And R N ≥R Z1 The settings and\or α r2 ≤α r <α r3 And R N ≥R Z2 settings to more accurately control humidity and effectively reduce energy consumption.

[0107] As another possible implementation method, Figure 18-19 As shown, a second fan is set in the storage chamber; N≥R2, the second fan starts; where R2 is the second dehumidification threshold, R2>R Z2 Or R2>R Z3 That is, the storage chamber is of medium humidity (R2>R Z2 ) or high humidity (R2>R Z3 ), the second fan is running. The airflow from the second fan outlet promotes the air flow in the storage cavity to avoid condensation caused by excessive humidity. On the other hand, the airflow from the second fan flows through the first breathable membrane, accelerating the water vapor transmission rate of the first breathable membrane to quickly dehumidify and avoid condensation caused by excessive humidity. The above first and second fans cooperate (R2≥R Z2 ) or the first fan, the second fan, and the refrigeration unit are matched (R2≥R Z3 ) can quickly adjust the humidity in the storage cavity to prevent food from becoming moldy.

[0108] In addition, in α r2 ≤α r <α r3 And R N ≥R Z2 When or in α r3 ≤α r And R N ≥R Z3 When α, the controller controls the second fan to operate. r2 ≤α r <α r3 And R N ≥R Z2 When the second humidity threshold R is preset Z2 = the second dehumidification threshold R2; as an alternative, Figure 20 As shown, a controller can be set to control the first fan and the second fan to work simultaneously until the storage humidity R in the storage chamber reaches N Reaching the storage humidity threshold R Z0 At this time, the first fan and the second fan cooperate to speed up the adjustment of the humidity in the storage chamber to prevent the food from getting moldy. r3 ≤α r And R N ≥R Z3 When the third humidity threshold R is preset Z3 = the second dehumidification threshold R2; as an alternative, Figure 21 As shown, a controller can be set to control the first fan, the second fan and the refrigeration unit to work simultaneously until the storage humidity R in the storage cavity reaches N Reaching the storage humidity threshold R Z0 At this time, the first fan, the second fan and the refrigeration unit work together to speed up the adjustment of the humidity in the storage cavity to prevent the food from becoming moldy.

[0109] In the above embodiment, the storage mode is switched, and R N >R Z0 When the controller controls the first fan to operate, the storage humidity in the storage chamber is R N Reaching the storage humidity threshold R of the converted storage mode Z0 . Such as switching from high humidity gear to medium humidity gear or low humidity gear.

[0110] The controller obtains the storage device continuous closing time t. After the storage device continuous closing time reaches the set time threshold t0, the controller controls the first fan to operate according to the set humidity gear (the default storage mode set by the program or the storage mode set by the user) until the storage humidity in the storage cavity reaches R N Reaching the storage humidity threshold R Z0 .

[0111] The above controller controls the first or second fan to operate at a specific power according to the humidity change rate and storage humidity, and controls the operation of the refrigeration unit. It comprehensively considers the humidity change rate and real-time humidity to control the operation of the fan. On the one hand, it can quickly adjust the humidity in the storage cavity to maintain a constant humidity in the storage cavity, effectively improving the preservation effect; on the other hand, it controls the fan operating power in a targeted manner to reduce energy consumption.

[0112] like Figure 17 As shown, one or more constant humidity preservation control methods for refrigerators are as follows:

[0113] S1: Set the storage mode. The storage humidity threshold R corresponding to the set storage mode Z0 When the storage humidity is lower than the current mode, the first fan starts, and the airflow from the first fan flows through the surface of the first breathable membrane, effectively accelerating the water vapor transmission rate of the first breathable membrane, and the humidity in the storage cavity 3 decreases rapidly; the second humidity sensor monitors the humidity value in the storage cavity 3. When the humidity R N When the storage humidity reaches the set threshold R Z0 When , the first fan stops working.

[0114] S2: In the set storage mode, the second humidity sensor monitors the humidity value in the storage cavity 3 in real time to obtain the storage humidity change rate α in the storage cavity r , Storage humidity R N ; Multiple cameras take pictures of the storage cavity to obtain the food space ratio γ; the controller starts the dehumidification program according to the food space ratio γ; and according to the storage humidity change rate α r And storage humidity R N To control the first fan, and timely adjust the humidity in the storage chamber 3, so that the humidity in the storage chamber 3 is kept constant.

[0115] Specifically, in this embodiment, a food proportion threshold, three humidity change rate thresholds, and three humidity thresholds are set in each storage mode, specifically recorded as: food proportion threshold γ0, first humidity change rate threshold α r1 , the second humidity change rate threshold α r2 , the third humidity change rate threshold α r3 , the first humidity threshold R Z1 , the second humidity threshold R Z2 , the third humidity threshold R Z3 ; Among them, the first humidity change rate threshold α r1 <Second humidity change rate threshold α r2 <Third humidity change rate threshold α r3 ; Storage humidity threshold R Z0 <First humidity threshold R Z1 <Second humidity threshold R Z2 <Third humidity threshold R Z3 .

[0116] S21: During storage in the set storage mode, when γ<γ0 and R N <R Z0 When the humidification device is turned on, the controller controls the humidification device to work; specifically, the controller controls the water valve to open, the water absorption membrane absorbs water, and the humidity in the storage cavity is increased through the second moisture permeable membrane;

[0117] S22: During storage in the set storage mode, when γ≥γ0, the controller controls the dehumidification process. Specifically, the dehumidification process includes:

[0118] S23: During storage in the set storage mode, at the first humidity change rate threshold α r1 ≤Storage humidity change rate α r <Second humidity change rate threshold α r2 , and storage humidity R N ≥ first humidity threshold R Z1 When the first fan is started, the first fan is operated at the first power P1 until the storage humidity R in the storage chamber 3 reaches N Reaching the storage humidity threshold R Z0 , the first fan stops working.

[0119] As an implementable manner, the rated power of the first wind turbine is recorded as P0, and P1=50% of P0.

[0120] S24: During storage in the set storage mode, at the second humidity change rate threshold α r2 ≤Storage humidity change rate α r <Third humidity change rate threshold α r2 , and storage humidity RN ≥ the second humidity threshold R Z2 When the first fan is started, the first fan is operated at the second power P2 until the storage humidity R in the storage chamber 3 reaches N Reaching the storage humidity threshold R Z0 , the first fan stops working. As an practicable approach, P2=100%P0 or P2=120%P0 to quickly complete humidity adjustment.

[0121] S25: During storage in the set storage mode, at the third humidity change rate threshold α r3 ≤Storage humidity change rate α r , and storage humidity R N ≥ the third humidity threshold R Z3 When the first fan is started, the first fan is operated at the second power P3, and at the same time, the refrigeration unit is operated (the air supply fan and the evaporator are operated) until the storage humidity R in the storage chamber 3 reaches N Reaching the storage humidity threshold R Z0 , the first fan and the refrigeration unit (air supply fan and evaporator) stop working. As an implementable method, P3=P2 to quickly complete humidity adjustment.

[0122] like Figure 18 As shown, as another practicable method, the first dehumidification threshold R1 is preset to be less than the first humidity threshold R Z1 <Second humidity threshold R Z2 <Second dehumidification threshold R2; After step S24, add step S3; specifically step S3 is: at the storage humidity R N ≥ the second dehumidification threshold R2 (the humidity threshold for controlling the start of the second fan), the second fan is started; at this time, the first fan and the second fan work simultaneously to dehumidify at high speed and quickly adjust the humidity in the storage chamber 3 to the storage humidity threshold R in the storage mode. Z0 Among them, the second dehumidification threshold R2 ≥ the second humidity threshold R Z2 ;

[0123] like Figure 19 As shown, as another practicable method, a third humidity threshold R is preset. Z3 ≤ the second dehumidification threshold R2; in the dehumidification process, after step S25, add step S3; specifically, step S3 is: at the storage humidity R N When the humidity is greater than or equal to the second dehumidification threshold R2 (the humidity threshold for controlling the start of the second fan), the second fan is started; at this time, the first fan, the second fan, the air supply fan and the evaporator work simultaneously to dehumidify at high speed and quickly adjust the humidity in the storage chamber 3 to the storage humidity threshold R in the storage mode. Z0 .

[0124] like Figure 20 As shown, as another practicable method, the second humidity threshold R is preset. Z2 = second dehumidification threshold R2; an alternative solution to step S24 is: at the second humidity change rate threshold α r2 ≤Storage humidity change rate α r <Third humidity change rate threshold α r3 , and storage humidity R N ≥ the second humidity threshold R Z2 When the humidity in the storage chamber reaches R N Reaching the storage humidity threshold R Z0 When this operation is performed, step S3 is no longer set.

[0125] like Figure 21 As shown, as another practicable method, a third humidity threshold R is preset. Z3 = second dehumidification threshold R2; an alternative solution to step S25 is: at the third humidity change rate threshold α r3 ≤Storage humidity change rate α r , and storage humidity R N ≥ the third humidity threshold R Z3 When the controller controls the second fan to operate, the first fan, the second fan and the refrigeration unit work simultaneously until the storage humidity in the storage cavity reaches R N Reaching the storage humidity threshold R Z0 When this operation is performed, step S3 is no longer set.

[0126] It should be noted that in the above storage mode, the first and second fans are controlled to operate at specific power levels based on the humidity change rate and storage humidity. This comprehensive consideration of both the humidity change rate and the real-time humidity allows for control of the fan and refrigeration unit operations. This allows for rapid adjustment of the humidity within the storage chamber, maintaining a constant humidity and effectively improving food preservation. Furthermore, the fan operating power is specifically controlled to reduce energy consumption. Furthermore, the present invention activates the dehumidification process when the food space occupancy reaches a set value, effectively controlling the food's impact on humidity to maintain a constant humidity within the storage chamber.

[0127] The above description is merely a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any person skilled in the art may utilize the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification, equivalent change, and modification of the above embodiments made in accordance with the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. Refrigerator, characterized in that It includes: a box body defining a storage room; a storage device housed in the storage room; The storage device defines a sealed storage cavity, and a communication port is formed on a side wall of the storage device; a first moisture-permeable membrane, which is provided at the communication opening of the storage device; a first fan disposed on a side wall of the storage device having the first moisture-permeable membrane and located on a side of the side wall close to the storage compartment; an air outlet of the first fan facing the first moisture-permeable membrane, and air flowing out of the air outlet of the first fan flowing along a surface of the first moisture-permeable membrane; a refrigeration unit having a second air outlet corresponding to the position of the first moisture permeable membrane; a low-temperature air flow formed by the refrigeration unit enters the storage room through the second air outlet and flows through the first moisture permeable membrane; a humidifying device, which is arranged in the storage cavity; The humidifying device divides the storage cavity into a first cavity for placing food and a second cavity defined by the humidifying device; the humidifying device includes: a second moisture-permeable membrane separating the first cavity and the second cavity; A water storage box is disposed in the second cavity; and a water valve is provided on the water storage box; A water guide tray cooperates with the water storage box; the water valve controls the water in the water storage box to flow into the water guide tray; a water-absorbing film, disposed in the water guide tray and adjacent to the second moisture-permeable film; The storage cavity is provided with a second humidity sensor for detecting the humidity in the storage cavity and a plurality of cameras for taking images of the storage cavity from different angles; The refrigerator includes a controller configured to obtain the food space ratio γ and storage humidity R in the storage cavity after the storage device enters the storage mode. N , Storage humidity change rate α r ; When γ<γ0 and R N <R Z0 When the water valve is opened, the controller controls the water absorption membrane to absorb water, and the humidity in the storage cavity is increased through the second moisture permeable membrane; When γ≥γ0, the controller controls the dehumidification process; where γ0 is the food ratio threshold.

2. The refrigerator according to claim 1, wherein: The dehumidification program includes: In α r3 ≤α r And R N ≥R Z3 When the controller controls the first fan to operate at the third power P3, the refrigeration unit operates until the storage humidity R in the storage cavity reaches N Reaching the storage humidity threshold R Z0 ; Among them, α r3 is the third humidity change rate threshold, R Z3 is the third humidity threshold, R Z0 is the storage humidity threshold in the storage mode, R Z0 <R Z3 .

3. The refrigerator according to claim 2, wherein: The dehumidification program includes: r2 ≤α r <α r3 And R N ≥R Z2 When the first fan is operated at the second power P2, the controller controls the first fan to operate until the storage humidity R N Reaching the storage humidity threshold R Z0 ; Among them, α r2 is the second humidity change rate threshold, R Z2 is the second humidity threshold; R Z2 <R Z3 , P2≤P3.

4. The refrigerator according to claim 2, wherein: The dehumidification program includes: r1 ≤α r <α r2 And R N ≥R Z1 When the controller controls the first fan to operate at the first power P1, the storage humidity in the storage cavity is R N Reaching the storage humidity threshold R Z0 ; Among them, α r1 is the first humidity change rate threshold, R Z1 is the first humidity threshold; R Z0 <R Z1 <R Z2 , P1<P2.

5. The refrigerator according to claim 4, wherein: The rated power of the first fan is denoted as P0, P1<P0<P2≤P3.

6. The refrigerator according to claim 5, characterized in that: P1=50%P0, P2≤P3=100%P0 or P2≤P3=120%P0.

7. The refrigerator according to any one of claims 1 to 6, characterized in that: A second fan is provided in the storage chamber; the dehumidification process includes: In R N ≥R2, the controller controls the second fan to work; wherein R2 is the second dehumidification threshold, R2>R Z2 Or R2>R Z3 .

8. The refrigerator according to claim 1, wherein: The storage chamber is provided with a second fan; the dehumidification process includes: r2 ≤α r <α r3 And R N ≥R Z2 When or in α r3 ≤α r And R N ≥R Z3 When the controller controls the second fan to operate.

9. The refrigerator according to any one of claims 1 to 6, characterized in that: The refrigerator is provided with a plurality of storage modes; storage mode switching, in R N >R Z0 When the controller controls the first fan to operate, the storage humidity in the storage cavity is R N Reaching the storage humidity threshold R of the converted storage mode Z0 .

Images