Refrigerator

Abstract

The application provides a refrigerator, which comprises a cabinet, a storage device and a humidifying device. The storage device is provided with a moisture-permeable film, and a first fan is arranged on the side wall of the storage device with the moisture-permeable film. The first fan is located on the side close to the storage compartment, and the airflow from the air outlet of the first fan flows along the surface of the moisture-permeable film. The humidifying device is arranged in the storage cavity and divides the storage cavity into a first cavity for placing food and a second cavity defined by the humidifying device. The first cavity and the second cavity are connected through an opening. The humidifying device comprises a water storage box arranged in the second cavity, a water guide disc, a water absorbing film arranged in the water guide disc and located at the opening, and a humidifying fan. The airflow from the air outlet of the humidifying fan flows along the surface of the moisture-permeable film. On one hand, the application can efficiently and quickly dehumidify, avoid the loss of moisture of food caused by wind blowing due to dehumidification, and avoid the mildewing of food. On the other hand, the application can increase 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 moisture-permeable membrane disposed at the communication port of the storage device;

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

[0011] 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 first cavity and the second cavity are connected through an opening; the humidifying device includes:

[0012] a water storage box, disposed in the second cavity;

[0013] a water guide tray, which cooperates with the water storage box and is used to hold water flowing out of the water storage box;

[0014] A water absorbing membrane is provided in the water guide tray and at the opening;

[0015] A humidifying fan is arranged in the second cavity, and the air flow flowing out of the air outlet of the humidifying fan flows along the surface of the moisture permeable membrane.

[0016] 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;

[0017] 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 ;

[0018] When γ<γ0 and R N <R Z0 When the controller controls the humidifying fan to work, the water absorbing film absorbs water, and under the action of the humidifying fan, the water vapor separates from the water absorbing film and enters the first cavity through the opening;

[0019] When γ≥γ0, the controller controls the dehumidification process; where γ0 is the food ratio threshold.

[0020] As an practicable manner, the dehumidification program includes:

[0021] In α r1 ≤α r <α r2 And R N ≥R Z1 When , the controller controls the first fan to operate at a first power P1;

[0022] Among them, α r1 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 .

[0023] As an practicable method, the dehumidification process includes: r2 ≤α r 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 ;

[0024] Among them, R Z2 is the second humidity threshold; RZ1 <R Z2 , P2>P1.

[0025] As an implementable manner, the rated power of the first wind turbine is recorded as P0, P1<P0<P2.

[0026] As an implementable manner, P1 = 50% P0, P2 = 100% P0 or P2 = 120% P0.

[0027] As an practicable manner, a second fan is provided in the storage chamber; and the dehumidification process includes:

[0028] In R N ≥R2, the second fan starts, and the first fan and the second fan work at the same time; wherein R2 is the second dehumidification threshold, R2>R Z2 .

[0029] As an practicable method, a second fan is provided in the storage chamber; the dehumidification process includes: r2 ≤α r And R N ≥R Z2 When the first fan and the second fan work simultaneously, the storage humidity in the storage cavity is R N Reaching the storage humidity threshold R Z0 .

[0030] 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 .

[0031] As an practicable manner, the controller obtains the storage device continuous closing time t, and after the storage device continuous closing time reaches the set time threshold t0, the controller operates the first fan according to the set humidity level until the storage humidity R in the storage cavity reaches N Reaching the storage humidity threshold R Z0 .

[0032] Compared with the prior art, the advantages and positive effects of the present invention are:

[0033] The present invention provides a refrigerator, comprising: a box body defining a storage room, a storage device accommodated in the storage room, 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 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 moisture-permeable membrane, the first fan is located on a side of the side wall close to the storage room, and the air outlet of the first fan faces the moisture-permeable membrane; the air flow discharged from the air outlet of the first fan flows along the surface of the moisture-permeable membrane; a humidifying device is provided in the storage cavity; the humidifying device divides the storage cavity into two sections for placing food a first cavity and a second cavity defined by a humidifying device; the humidifying device comprises a water storage box arranged in the second cavity, a water guide plate, a water absorbing membrane arranged in the water guide plate and located at the opening, and a humidifying fan; the air flow flowing out of the air outlet of the humidifying fan flows along the surface of the moisture permeable membrane; the arrangement of the present invention effectively increases the air flow rate on the surface of the moisture permeable membrane by turning on the first fan, thereby dehumidifying efficiently and quickly, avoiding the loss of water from the food due to the wind 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

[0034] Figure 1 Schematic diagram of the overall structure of the refrigerator of the present invention;

[0035] Figure 2 It is a structural schematic diagram of the storage device of the refrigerator of the present invention;

[0036] Figure 3 This is a schematic structural diagram of the storage device of the refrigerator of the present invention in an open state;

[0037] Figure 4 A schematic diagram of a portion of the structure of a storage device of a refrigerator according to the present invention;

[0038] Figure 5 A schematic diagram of a partial structure of a storage device of a refrigerator according to the present invention from another perspective;

[0039] Figure 6 A schematic structural diagram of the storage device of the refrigerator of the present invention from another perspective;

[0040] Figure 7 This is a schematic diagram of the structure of the storage device portion of the refrigerator of the present invention;

[0041] Figure 8 Schematic diagram of the structure of the moisture permeable membrane and the bracket of the refrigerator of the present invention;

[0042] Figure 9 A schematic diagram of the structure of the storage device and humidifying device of the refrigerator of the present invention;

[0043] Figure 10 A schematic structural diagram of the storage device and humidifying device of the refrigerator of the present invention assembled from another perspective;

[0044] Figure 11 This is a schematic structural diagram of the storage device of the refrigerator of the present invention in an open state;

[0045] Figure 12 Schematic diagram of the structure of the humidifying device of the refrigerator of the present invention;

[0046] Figure 13 Schematic diagram of the constant humidity control method for a refrigerator according to the present invention;

[0047] Figure 14 This is an overall schematic diagram of another embodiment of the constant humidity control method for a refrigerator of the present invention;

[0048] Figure 15 This is an overall schematic diagram of another embodiment of the constant humidity control method for a refrigerator of the present invention.

[0049] In the above figures: storage room 1; storage device 2; storage cavity 3; moisture-permeable membrane 4; first fan 5; second fan 6; housing 7; drawer 8; bracket 9; box 10; operation panel 11; first side 12; second side 13; cover 14; partition plate 30; first cavity 31; second cavity 32; absorbent cotton 33; water storage box 34; water guide plate 35; humidifying fan 36; air flow channel 37; opening 38. DETAILED DESCRIPTION

[0050] 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.

[0051] 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.

[0052] 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.

[0053] A refrigerator, such as Figures 1-8As 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.

[0054] A storage device 2 is provided in 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, with a moisture-permeable membrane 4 provided at the communication port. A first fan 5 is provided on the side wall of the storage device 2 having the moisture-permeable membrane 4. The first fan 5 is located on the side of the side wall close to the storage room 1. The first fan 5 is adjacent to the moisture-permeable membrane 4, and the air outlet of the first fan 5 faces the moisture-permeable membrane 4. The airflow from the air outlet of the first fan 5 flows along the surface of the 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 moisture-permeable membrane 4 provided at the communication port, but no gas exchange occurs, so that the storage cavity 3 is not affected by the airflow of the external environment (storage room).

[0055] 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 the first dehumidification threshold R1, 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 moisture permeable membrane 4 to flow through the moisture permeable membrane 4; the air flow on the side of the moisture permeable membrane 4 close to the storage room 1 is accelerated, and the humidity value outside the sealed storage cavity 3 (especially the moisture permeable membrane 4) is reduced, forming a larger humidity difference, preventing the 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 gathering 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, it can prevent the food from being blown by the wind during the dehumidification process and causing moisture loss; in addition, it can also promote the air flow in the storage room 1 and promote the uniformity of its internal cooling capacity.

[0056] The first dehumidification threshold R1 is set based on the humidity of 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 and achieve more targeted humidity control.

[0057] As an practicable method, an operation panel 11 is provided on the upper wall of the storage device 2 for the user to select storage modes with different humidity levels. In this embodiment, the operation panel is set with high humidity level, medium humidity level, and low humidity level; each set humidity level corresponds to a set storage humidity threshold R Z0 It should be noted that the threshold value set above can be set to a specific value or a specific humidity range. Specifically, in this embodiment, the humidity threshold value R Z0 The humidity range is set to a specific value; the intersection of the humidity ranges corresponding to different humidity levels is an empty set; the high humidity level corresponds to a humidity range of [90%, 98%] and is suitable for storing leafy vegetables, cauliflowers, fungi, legumes, stone fruits, pome fruits, and berries; the medium humidity level corresponds to a humidity range of [80%, 90%] and is suitable for storing root vegetables such as potatoes and sweet potatoes, nightshades, and citrus fruits; the low humidity level corresponds to a humidity range of [70%, 80%] and is suitable for storing root vegetables such as onions and garlic, melons, and fruits. The above settings achieve targeted humidity control for food ingredients, improving freshness and product quality, and enhancing the user experience. As an operative embodiment, the storage device 2 includes a housing 7 and a removable or push-in drawer 8. An operating panel 11 is located on the top wall of the housing 7, near one end of the refrigerator door, for easy user operation.

[0058] In this embodiment, a cover 14 is provided at the communication port, defining a chamber to house the 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 breathable membrane 4 when the drawer 8 is fully accommodated within the storage chamber 3. This effectively protects the breathable membrane 4 from collisions with 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.

[0059] As an implementable approach, a second fan 6 is provided in the storage cavity 3 to promote air flow and mixing in the storage cavity 3 , thereby preventing condensation from forming in the storage cavity 3 due to excessive humidity, which may cause the food to become moldy.

[0060] When the humidity in the storage chamber 3 exceeds the humidity in the storage room 1 and reaches the second dehumidification threshold R2 (where the second dehumidification threshold R2 > the first dehumidification threshold R1), the humidity in the storage chamber 3 is even higher. At this time, the first fan 5 and the second fan 6 operate simultaneously. At this time, the first fan 5 effectively increases the airflow velocity through the moisture-permeable membrane 4, effectively increasing the water vapor transmission rate of the moisture-permeable membrane 4 to quickly dehumidify. The operation of the second fan 6 promotes the mixing of air in the storage chamber 3, preventing excessive humidity from forming condensation in the storage chamber 3, which can cause food mold. The second dehumidification threshold R2 is set according to the humidity at which stored food molds.

[0061] In this embodiment, the second fan 6 is positioned on the side wall of the storage device 2 where the moisture-permeable membrane 4 is located, adjacent to the membrane 4. The outlet of the second fan 6 faces the membrane 4, and the airflow from the outlet of the second fan 6 flows along the surface of the 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 membrane 4, accelerating the water vapor transmission rate of the 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.

[0062] 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 moisture-permeable membrane 4, further accelerating the water vapor transmission rate of the moisture-permeable membrane 4 and accelerating dehumidification.

[0063] In this embodiment, the area defined by the edge of the side wall of the storage device 2 where the moisture-permeable membrane 4 is located is denoted as S1, and the area of ​​the 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 moisture-permeable membrane 4 to be appropriately arranged on the side wall of the storage device 2 while ensuring that the area of ​​the moisture-permeable membrane 4 meets the requirements for humidity control.

[0064] 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 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 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 moisture permeable membrane 4, thereby improving the overall water vapor permeability of the moisture permeable membrane 4 and accelerating dehumidification.

[0065] In this embodiment, the moisture-permeable membrane 4 is configured in a rectangular shape; the longer side of the rectangular moisture-permeable membrane 4 is designated as the first side 12, and the shorter side of the rectangular moisture-permeable 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 moisture-permeable membrane 4. This ensures that the air outlets of the first and second fans 5 and 6 effectively cover the moisture-permeable membrane 4 while also effectively utilizing the fluidity of the airflow, allowing it to flow fully through the first side 12 of the moisture-permeable 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 moisture-permeable membrane 4, effectively ensuring an effective amount of airflow through the moisture-permeable membrane 4 and improving airflow utilization.

[0066] The above-mentioned moisture-permeable membrane 4 is configured as a rectangle, with the length of its first side 12 being denoted as C and the length of its second side 13 being 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 moisture-permeable membrane 4 and ensure the airflow velocity through each area of ​​the moisture-permeable membrane 4, thereby ensuring that all areas of the moisture-permeable membrane 4 have an efficient water vapor transmission rate.

[0067] Along the second side 13 of the moisture permeable 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 setting can reasonably arrange the moisture permeable membrane 4 and the fan by limiting the size of the fan and the size of the moisture permeable 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 a comprehensive and effective coverage rate, thereby further improving the overall water vapor transmission rate of the moisture permeable membrane 4.

[0068] In addition, the normal line of the breathable membrane 4 passing through the center of the 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 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 breathable membrane 4, thereby increasing the water vapor permeability of the breathable membrane 4.

[0069] The center line of the moisture permeable 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 moisture permeable membrane 4 located on opposite sides of the center line M are recorded as the first moisture permeable zone and the second moisture permeable zone respectively; wherein, one of the air outlet of the first fan 5 and the air outlet of the second fan 6 faces the first moisture permeable zone, and the other faces the second moisture permeable zone; the air flow blown out by the air outlet of the first fan 5 mainly flows through the moisture permeable zone it faces; the air flow blown out by the air outlet of the second fan 6 mainly flows through the moisture permeable zone it faces; the above arrangement makes the air flow intensity flowing through the entire area of ​​the moisture permeable membrane 4 uniformly distributed as a whole, fully utilizes the moisture permeable membrane 4, and improves the moisture permeation efficiency. In this embodiment, the first moisture permeable zone is located below the second moisture permeable zone, and the air outlet of the first fan 5 faces the first moisture permeable zone, and the air outlet of the second fan 6 faces the second moisture permeable zone.

[0070] In the above description, the first fan 5 and the second fan 6 are centrifugal fans or vortex fans. In this embodiment, a moisture-permeable membrane 4 is provided on the rear wall of the storage cavity 3. Furthermore, the 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 moisture-permeable membranes 4 are provided on the bracket 9, arranged side by side. As a configurable method, the two moisture-permeable membranes are spaced apart to effectively improve moisture permeation efficiency.

[0071] like Figures 9-12 As shown, a humidifier is installed in the drawer; in this embodiment, the humidifier is installed at the front end of the drawer. Specifically, the drawer cavity is divided into a first cavity 31 for placing items and a second cavity 32 defined by the humidifier; the first cavity 31 and the second cavity 32 are separated by a partition 30. In this embodiment, the second cavity 32 is located in front of the first cavity 31.

[0072] The humidifier includes a water storage box 34 mounted within the second chamber 32. The partition plate 30 is provided with an opening 38 connecting the first chamber 31 and the second chamber 32. Water-absorbing cotton 33 is positioned corresponding to the opening 38. The water storage box 34 is connected to a water guide tray 35, within which the water-absorbing cotton 33 is located. A control valve is provided on the water storage box 34 to control the amount of water flowing from the water storage box 34 into the water guide tray 35.

[0073] The position of the water storage box 34 corresponds to the position of the water absorbent cotton 33 , and the water storage box 34 and the water absorbent cotton 33 together define an air flow channel 37 .

[0074] A humidifying fan 36 is installed in the second chamber 32. The air outlet of the humidifying fan 36 is connected to the air flow channel 37. When the humidifying fan 36 is in operation, the air flowing out of the humidifying fan 36 enters the air flow channel 37, accelerating the airflow on the surface of the absorbent cotton 33, thereby promoting the separation of water vapor adsorbed by the absorbent cotton 33. 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 humidifying 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 control valve is opened to ensure that there is sufficient water in the water guide plate 35. The absorbent cotton 33 absorbs the water, and the humidifying fan 36 accelerates the air flow on the surface of the absorbent cotton 33. The water vapor adsorbed on the absorbent cotton 33 quickly and in large quantities separates from the absorbent cotton 33 and then enters the first chamber 31 through the opening 38, thereby increasing the air humidity in the first chamber 31 and effectively ensuring the freshness of the food.

[0075] Specifically, in this embodiment, the air outlet of the humidifying fan 36 is adjacent to the absorbent cotton 33, and the air flow flowing out of the air outlet of the humidifying fan 36 flows along the surface of the wet water cotton; on the one hand, the above setting accelerates the air flow on the surface of the absorbent cotton 33, effectively promoting the separation of water vapor from the absorbent cotton 33; on the other hand, it prevents excessive airflow from entering the first cavity 31, thereby preventing the food from drying out.

[0076] 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, absorbent cotton 33, and a humidifying fan 36 are all mounted within the housing. This makes the humidifier a self-contained module, facilitating installation and removal.

[0077] 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 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%.

[0078] 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.

[0079] 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 moisture permeable membrane 4 by increasing the air flow speed on the surface of the 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 .

[0080] 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.

[0081] like Figure 13 As shown, when γ<γ0 and R N <R Z0 When the food is in a low-density state, the controller controls the humidification fan to operate. The water-absorbing membrane absorbs water, and under the action of the humidification fan, the water vapor separates from the water-absorbing membrane and enters the first cavity through the opening. When the food space in the storage cavity exceeds the set food space threshold, the food will release moisture to the surrounding area of ​​the storage cavity 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 cavity to improve the food preservation effect.

[0082] 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.

[0083] Dehumidification programs include:

[0084] 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 .

[0085] As an implementable approach, in α r2 ≤α r 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 As an practicable manner, the rated power of the first wind turbine is recorded as P0, P1<P0<P2; specifically, in this embodiment, P1=50%P0, P2=100%P0 or P2=120%P0.

[0086] Under different humidity change rates and real-time humidity conditions, the controller operates the first fan at different power levels. This allows for rapid humidity adjustment and reduces energy consumption by rationally controlling the fan's operating power. Furthermore, under these humidity conditions, the controller only controls the first fan, accelerating air flow on the side of the moisture-permeable membrane closest to the storage compartment (outside the storage cavity), reducing the humidity outside the sealed storage cavity (particularly the moisture-permeable membrane), and creating a larger humidity differential. This prevents the moisture-permeable membrane from decreasing in efficiency or failing completely, preventing moisture from escaping the storage cavity. This improves moisture permeability, thereby reducing the accumulation of condensation or frost within the storage cavity, preventing condensation from forming within the storage cavity and causing the food to mold. Furthermore, this prevents moisture loss from the food during the dehumidification process due to wind. Furthermore, it promotes airflow within the storage compartment, promoting uniform cooling within the compartment.

[0087] As another possible implementation method, Figure 14 As shown, in R N ≥R2, the second fan starts, and the first and second fans work at the same time; where R2 is the second dehumidification threshold, R2>R Z2That is, when the humidity in the storage chamber is high, the first and second fans operate simultaneously. The airflow from the second fan's outlet promotes air flow within the storage chamber to prevent condensation caused by excessive humidity. Furthermore, the airflow from the second fan passes through the moisture-permeable membrane, accelerating the water vapor transmission rate through the membrane for rapid dehumidification, thus preventing condensation caused by excessive humidity. The first and second fans work together to quickly adjust the humidity within the storage chamber and prevent food from spoiling.

[0088] In addition, in α r2 ≤α r And R N ≥R Z2 When the second humidity threshold R is preset Z2 = the second dehumidification threshold R2; as an alternative, Figure 15 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 cavity to prevent the food from getting moldy.

[0089] 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 .

[0090] 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 .

[0091] The above controller controls the first or second fan to operate at a specific power according to the humidity change rate and storage humidity. 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.

[0092] like Figure 13 As shown, one or more constant humidity preservation control methods for refrigerators are as follows:

[0093] S1: Set the storage mode. The storage humidity threshold R corresponding to the set storage mode Z0When 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 moisture permeable membrane, effectively accelerating the water vapor transmission rate of the moisture permeable 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.

[0094] 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.

[0095] Specifically, in this embodiment, a food proportion threshold, two humidity change rate thresholds, and two 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 first humidity threshold R Z1 , the second humidity threshold R Z2 ; Among them, the first humidity change rate threshold α r1 <Second humidity change rate threshold α r2 ; Storage humidity threshold R Z0 <First humidity threshold R Z1 <Second humidity threshold R Z2 .

[0096] 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 humidification fan to work; the water absorption film absorbs water, and under the action of the humidification fan, the water vapor separates from the water absorption film and enters the first cavity through the opening;

[0097] S22: During storage in the set storage mode, when γ≥γ0, the controller controls the dehumidification process. Specifically, the dehumidification process includes:

[0098] S23: 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.

[0099] As an implementable manner, the rated power of the first wind turbine is recorded as P0, and P1=50% of P0.

[0100] S24: At the second humidity change rate threshold α r2 ≤Storage humidity change rate α r , and storage humidity R N ≥ 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.

[0101] like Figure 14 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; In the dehumidification procedure, after step S24, step S3 is added; specifically, step S3 is: at the storage humidity R N When the humidity in the storage chamber 3 reaches the storage humidity threshold R2 (the humidity threshold for controlling the start of the second fan), the second fan is started, and the first fan and the second fan work simultaneously to dehumidify at a 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 ;

[0102] like Figure 15 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 , and storage humidity R N ≥ the second humidity threshold R Z2 When the first fan and the second fan are set to work simultaneously, the storage humidity in the storage chamber is R N Reaching the storage humidity threshold R Z0 When this operation is performed, step S3 is no longer set.

[0103] It should be noted that in the above storage mode, the first or second fan is controlled to operate at a specific power 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 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 and maintaining a constant humidity within the storage chamber.

[0104] 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 moisture-permeable membrane disposed at the communication port of the storage device; a first fan disposed on a side wall of the storage device having the moisture-permeable membrane and located on a side of the side wall close to the storage room; air flowing out of an air outlet of the first fan flows along a surface of the moisture-permeable membrane; 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 first chamber and the second chamber are connected through an opening; the humidifying device comprises: a water storage box, disposed in the second cavity; a water guide tray, which cooperates with the water storage box and is used to hold water flowing out of the water storage box; A water absorbing membrane is provided in the water guide tray and at the opening; a humidifying fan disposed in the second cavity, wherein the airflow flowing out of the air outlet of the humidifying fan flows along the surface of the moisture permeable membrane; 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 controller controls the humidifying fan to work, the water absorbing film absorbs water, and under the action of the humidifying fan, the water vapor separates from the water absorbing film and enters the first cavity through the opening; 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 r1 ≤α r <α r2 And R N ≥R Z1 When , the controller controls the first fan to operate at a first power P1; Among them, α r1 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 .

3. The refrigerator according to claim 2, wherein: The dehumidification program includes: r2 ≤α r 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, R Z2 is the second humidity threshold; R Z1 <R Z2 , P2>P1.

4. The refrigerator according to claim 3, wherein: The rated power of the first fan is denoted as P0, where P1<P0<P2.

5. The refrigerator according to claim 4, wherein: P1=50%P0, P2=100%P0 or P2=120%P0.

6. The refrigerator according to any one of claims 1 to 5, characterized in that: A second fan is provided in the storage chamber; the dehumidification process includes: In R N ≥R2, the second fan starts, and the first fan and the second fan work at the same time; wherein R2 is the second dehumidification threshold, R2>R Z2 .

7. The refrigerator according to any one of claims 1-2, characterized in that: The storage chamber is provided with a second fan; the dehumidification process includes: r2 ≤α r And R N ≥R Z2 When the first fan and the second fan work simultaneously, the storage humidity in the storage cavity is R N Reaching the storage humidity threshold R Z0 .

8. The refrigerator according to any one of claims 1 to 5, 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 .

9. The refrigerator according to any one of claims 1 to 5, characterized in that: The controller obtains the storage device continuous closing time t, and after the storage device continuous closing time reaches the set time threshold t0, the controller runs the first fan according to the set humidity level until the storage humidity R in the storage cavity reaches N Reaching the storage humidity threshold R Z0 .

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