Refrigerator

Abstract

This invention provides a refrigerator, comprising: a cabinet, a storage device, and a humidifying device; the storage device is provided with a first moisture-permeable membrane, and a first fan is provided on the side wall of the storage device having the first moisture-permeable membrane, the first fan being located on the side near the storage compartment, and its air outlet facing the first moisture-permeable membrane; the airflow from the air outlet of the first fan flows along the surface of the first moisture-permeable membrane; the humidifying device is disposed in the storage compartment, dividing the storage compartment into a first compartment for placing food and a second compartment defined by the humidifying device; the humidifying device includes a second moisture-permeable membrane separating the first and second compartments, a water storage box disposed in the second compartment and having a water valve, a water guide tray cooperating with the water storage box, and a water-absorbing membrane disposed in the water guide tray and adjacent to the second moisture-permeable membrane; this invention, on the one hand, efficiently and quickly dehumidifies, preventing food from losing moisture due to being blown away by the wind during dehumidification, thus preventing food from becoming moldy; on the other hand, it can increase humidity through the humidifying device, effectively improving the overall moisturizing and preservation effect of the refrigerator.

Description

Technical Field

[0001] This invention belongs to the technical field of refrigerators, and particularly relates to a refrigerator. Background Technology

[0002] Currently available refrigerators with adjustable humidity drawers have two major drawbacks. First, it is difficult to simultaneously achieve the desired humidity control effect at different settings. This often results in the following situations: for example, the high humidity setting has poor moisturizing effect, causing leafy vegetables and other foods that require a high humidity environment to dry out; or when the drawer is set to the high humidity setting, excessive humidity inside the drawer leads to condensation, while when set to the medium or low humidity setting, excessive humidity can cause mold growth if citrus fruits, melons, or other foods that are suitable for medium or low humidity are stored.

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

[0004] To address the aforementioned technical problems, this invention proposes a refrigerator.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] Refrigerator, which includes:

[0007] The container defines the storage space;

[0008] A storage device is housed within the storage compartment; the storage device defines a sealed storage cavity, and a communication opening is formed on one side wall of the storage device;

[0009] A first moisture-permeable membrane is disposed at the communication port of the storage device;

[0010] A first fan is disposed on the side wall of the storage device having the first moisture-permeable membrane, and is located on the side of the side wall close to the storage compartment; the airflow from the outlet of the first fan flows along the surface of the first moisture-permeable membrane.

[0011] A humidifying device is disposed within 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:

[0012] A second moisture-permeable membrane separates the first cavity and the second cavity;

[0013] A water storage box is located inside the second cavity; and a water valve is provided on the water storage box;

[0014] A water guide plate, which cooperates with the water storage box; the water valve controls the flow of water from the water storage box into the water guide plate;

[0015] An absorbent membrane is disposed within the water guide plate and is adjacent to the second permeable membrane.

[0016] As one possible implementation, the storage cavity is equipped with a second humidity sensor for detecting the humidity inside the storage cavity and multiple cameras for capturing images of the storage cavity from different angles;

[0017] The refrigerator includes a controller configured to acquire the food space ratio γ and storage humidity R in the storage compartment after the storage device enters storage mode. N Storage humidity change rate α r ;

[0018] When γ < γ0 and R N <R Z0 When the controller opens the water valve, the absorbent membrane absorbs water, and the humidity inside the storage cavity is increased through the second moisture-permeable membrane;

[0019] When γ≥γ0, the controller initiates the dehumidification program; where γ0 is the food content threshold.

[0020] As one feasible approach, the dehumidification process includes:

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

[0022] Where, α r1 α is the threshold for the first rate of change of humidity. r2 R is the second humidity change rate threshold. Z0 R represents the storage humidity threshold under the given storage mode. Z1 R is the first humidity threshold; Z0 <R Z1 .

[0023] As one feasible approach, the dehumidification process includes: in α r2 ≤α r And R N ≥R Z2 At that time, the controller controls the first fan to operate at the second power P2 until the storage humidity R in the storage cavity is reached. N Reaching the storage humidity threshold R Z0 ;

[0024] Among them, R Z2 The second humidity threshold; R Z1 <R Z2 P2 > P1.

[0025] As one feasible approach, the rated power of the first fan is denoted as P0, where P1 < P0 < P2.

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

[0027] As one feasible approach, a second fan is provided within the storage cavity; the dehumidification process includes:

[0028] In R N When R2 is greater than or equal to R2, the second fan starts, and the first and second fans work simultaneously; where R2 is the second dehumidification threshold, and R2 > R Z2 .

[0029] As one feasible approach, a second fan is provided within the storage cavity; the dehumidification process includes: in α r2 ≤α r And R N ≥R Z2 At that time, the first fan and the second fan operate simultaneously until the storage humidity R in the storage cavity is reached. N Reaching the storage humidity threshold R Z0 .

[0030] As one feasible approach, the refrigerator is equipped with multiple storage modes; the storage mode switching is performed in R N >R Z0 At that time, the controller controls the first fan to operate until the storage humidity R in the storage cavity is reached. N The storage humidity threshold R of the converted storage mode is reached. Z0 .

[0031] As one possible implementation, the controller acquires the continuous closing time t of the storage device. After the continuous closing time of the storage device reaches a 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 is reached. N Reaching the storage humidity threshold R Z0 .

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

[0033] This invention provides a refrigerator, comprising: a cabinet defining a storage compartment, a storage device housed within the storage compartment, and a controller; the storage device defining a sealed storage cavity, and a communication opening formed on one side wall of the storage device; a first moisture-permeable membrane provided at the communication opening of the storage device; a first fan provided on the side wall of the storage device having the first moisture-permeable membrane, the first fan being located on the side of the side wall closer to the storage compartment, and the air outlet of the first fan facing the first moisture-permeable membrane; airflow from the air outlet of the first fan flowing along the surface of the first moisture-permeable membrane; a humidifying device disposed within the storage cavity; the humidifying device dividing the storage cavity into storage compartments. The refrigerator comprises a first chamber for food storage and a second chamber defined by a humidifying device. The humidifying device includes a second permeable membrane separating the first and second chambers, a water storage box disposed in the second chamber and having a water valve, a water guide plate cooperating with the water storage box, and a water-absorbing membrane disposed in the water guide plate and adjacent to the second permeable membrane. The present invention effectively increases the airflow velocity on the surface of the first permeable membrane by turning on the first fan, thereby achieving efficient and rapid dehumidification. This prevents the food from losing moisture due to being blown away by the wind during dehumidification, enhances the dehumidification effect, and prevents excessive humidity in the storage chamber from causing the food to mold. This effectively improves the moisturizing and preservation effect. In addition, the present invention increases humidity through the humidifying device, effectively improving the overall moisturizing and preservation effect of the refrigerator. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the refrigerator of the present invention;

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

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

[0037] Figure 4 This is a partial structural schematic diagram of the storage device of the refrigerator of the present invention;

[0038] Figure 5 This is a schematic diagram of a portion of the storage device of the refrigerator of the present invention from another perspective.

[0039] Figure 6 This is a schematic 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 storage device portion of the refrigerator of the present invention;

[0041] Figure 8 This is a schematic diagram of the structure of the first moisture-permeable membrane and the support of the refrigerator of the present invention;

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

[0043] Figure 10 Another perspective structural schematic diagram of the assembly of the storage device and humidification device of the refrigerator of the present invention;

[0044] Figure 11 This is a schematic diagram of the refrigerator's storage device in the open state.

[0045] Figure 12 This is a schematic diagram of the humidification device of the refrigerator of the present invention;

[0046] Figure 13 This is a schematic diagram of the humidity control method for the refrigerator of the present invention.

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

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

[0049] In the above figures: storage room 1; storage device 2; storage cavity 3; first breathable membrane 4; first fan 5; second fan 6; shell 7; drawer 8; bracket 9; box 10; control 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; second breathable membrane 36; opening 38. Detailed Implementation

[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 by the present invention is not limited to the scope described in the specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0051] It should be noted that the descriptions involving "first," "second," etc., in this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0052] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0053] A type of refrigerator, such as Figures 1-8As shown, the refrigerator includes an insulated cabinet 10; the cabinet 10 includes an outer shell and an inner liner 15, the inner liner 15 defining 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. Each storage compartment 1 can be closed by its corresponding door. It should be noted that the arrangement of the refrigerator and freezer compartments is not limited to an upper and lower arrangement; for example, the condenser compartment and freezer compartment can be arranged side by side. Of course, the number of storage compartments is not limited to two.

[0054] The storage room 1 is equipped with a storage device 2. The storage device 2 defines a sealed storage cavity 3, and a connecting opening is formed on one side wall of the storage device 2. A first moisture-permeable membrane 4 is provided at the connecting opening. A first fan 5 is provided on the side wall of the storage device 2 with the first moisture-permeable membrane 4. The first fan 5 is located on the side of the side wall closest to 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 above. The storage cavity 3 and the storage room 1 exchange moisture through the first moisture-permeable membrane 4 at the connecting opening, but no gas exchange occurs, so that the storage cavity 3 is not affected by the airflow of its external environment (the storage room).

[0055] The refrigerator is equipped with a controller, and a first humidity sensor is installed in the storage compartment 1 to monitor the humidity in the storage compartment 1. In this example, the first humidity sensor is installed on the back wall of the storage compartment 1 and corresponds to the position of the storage device 2. A second humidity sensor is installed in the storage cavity 3 to monitor the humidity in the storage cavity 3. When the humidity inside the storage cavity 3 exceeds the humidity inside the storage room 1 and reaches the first dehumidification threshold R1, the controller controls the first fan 5 to operate. The airflow from the outlet of the first fan 5 flows along the surface of the first permeable membrane 4, thus accelerating the airflow on the side of the first permeable membrane 4 closest to the storage room 1. This reduces the humidity value outside the sealed storage cavity 3 (especially the first permeable membrane 4), creating a larger humidity difference. This prevents the efficiency of the first permeable membrane 3 from decreasing or completely failing, thus preventing moisture from being discharged from the storage cavity 3. This increases the moisture permeability, thereby reducing the accumulation of moisture generated by the food inside the storage cavity 3, preventing condensation or frost. This avoids condensation in the storage cavity 3, which can lead to mold growth on the food. It also prevents the food from being blown away by the wind during dehumidification, thus preventing moisture loss. In addition, it can also promote airflow within the storage room 1, promoting uniform cooling within it.

[0056] The first dehumidification threshold R1 is set according to the suitable humidity for storing the food. When setting up the refrigerator, multiple thresholds can be preset for different types and quantities of food, allowing users to choose the appropriate threshold and achieve more targeted humidity control.

[0057] As an feasible approach, an operation panel 11 is provided on the upper wall of the storage device 2 to allow the user to select storage modes with different humidity levels. In this embodiment, the operation panel is set with high humidity, medium humidity, and low humidity levels; 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 a specific value or a specific humidity range. Specifically, in this embodiment, the humidity threshold R... Z0 The system is configured with specific humidity ranges; 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%], suitable for storing leafy vegetables, cauliflower, mushrooms, legumes, stone fruits, pome fruits, and berries; the medium humidity level corresponds to a humidity range of [80%, 90%], suitable for storing root vegetables such as potatoes and sweet potatoes, solanaceous vegetables, and citrus fruits; the low humidity level corresponds to a humidity range of [70%, 80%], suitable for storing root vegetables such as onions and garlic, melons, and fruits. These settings achieve targeted humidity control for food items, improving preservation and product quality, and enhancing the user experience. As an feasible implementation, the storage device 2 includes a housing 7 and a retractable or push-in drawer 8. The control panel 11 is located on the top wall of the housing 7 near the refrigerator door for easy user operation.

[0058] In this embodiment, a cover 14 is provided at the connecting opening, defining a receiving cavity to accommodate the first moisture-permeable membrane 4. In this embodiment, the receiving cavity 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, so that when the drawer 8 is fully accommodated in the storage cavity 3, the drawer 8 is prevented from contacting the first moisture-permeable membrane 4 and damaging it; at the same time, it effectively protects the first moisture-permeable membrane 4 from collisions and damage by components other than the storage device 2. Multiple ventilation holes are formed on the cover 14 to allow airflow blown by the first fan 5 to pass through and flow over the surface of the moisture-permeable membrane. In this embodiment, the cover 14 is integrally formed with the side wall of the storage device 2 for easy processing.

[0059] As an feasible approach, a second fan 6 is provided in the storage cavity 3 to promote airflow and mixing in the storage cavity 3, so as to avoid excessive humidity and condensation in the storage cavity 3, which would lead to food spoilage.

[0060] When the humidity inside the storage cavity 3 exceeds the humidity inside the storage room 1 and reaches the second dehumidification threshold R2 (where the second dehumidification threshold R2 > the first dehumidification threshold R1), the humidity inside the storage cavity 3 becomes even higher. At this time, the first fan 5 and the second fan 6 operate simultaneously. The first fan 5 effectively increases the airflow velocity through the first moisture-permeable membrane 4, effectively increasing the water vapor permeation rate of the first moisture-permeable membrane 4 for rapid dehumidification. The second fan 6 operates, promoting airflow and mixing within the storage cavity 3, preventing excessive humidity from causing condensation and thus preventing food spoilage. The second dehumidification threshold R2 is set based on the humidity level at which mold growth occurs in the stored food.

[0061] In this embodiment, the second fan 6 is disposed on the side wall of the storage device 2 where the first moisture-permeable membrane 4 is located, and is adjacent to the first moisture-permeable membrane 4. The air outlet of the second fan 6 faces the first moisture-permeable membrane 4, and the airflow from the air outlet of the second fan 6 flows along the surface of the first moisture-permeable membrane 4. The airflow from the air outlet of the second fan 6 promotes air circulation within the storage cavity 3 to prevent excessive humidity and condensation. On the other hand, the airflow generated by the second fan 6 flows through the first moisture-permeable membrane 4, accelerating the water vapor permeation rate of the first moisture-permeable membrane 4 for rapid dehumidification, thus preventing excessive humidity and condensation. The above-mentioned positioning of the second fan 6 accelerates the regulation of humidity within the storage cavity 3, preventing food from becoming moldy.

[0062] As one feasible approach, the first fan 5 and the second fan 6 are positioned on opposite sides of the same side wall of the storage device 2, with the second fan 6 corresponding to the position of the first fan 5. When the storage cavity 3 is in a high-humidity environment, the first fan 5 and the second fan 6 operate simultaneously, increasing the airflow velocity on both sides of the first moisture-permeable membrane 4, further accelerating the water vapor permeation rate of the first moisture-permeable membrane 4, and speeding up dehumidification.

[0063] 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 for the reasonable arrangement of the first fan 5, the second fan 6, and the first moisture-permeable membrane 4 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 regulation.

[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 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.

[0065] In this embodiment, the first permeable membrane 4 is rectangular; the longer side of the rectangular first permeable membrane 4 is designated as the first side 12, and the shorter side is designated as the second side 13. The first fan 5 and the second fan 6 are both positioned adjacent to the shorter second side 13 of the first permeable membrane 4. This ensures that the outlets of the first fan 5 and the second fan 6 effectively cover the first permeable membrane 4, and also effectively utilizes the airflow to allow the airflow to flow fully through the direction of the first side 12 of the first permeable membrane 4. Furthermore, the plane containing the outlet of the first fan 5 or the second fan 6 is parallel to the shorter edge of the first permeable membrane 4 to effectively ensure the effective airflow through the first permeable membrane 4 and improve airflow utilization.

[0066] The first moisture-permeable membrane 4 is set 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 time, the 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 that the first moisture-permeable membrane 4 has a high water vapor permeation rate at all points.

[0067] Along the second side 13 of the first permeable membrane 4, the outlet size of the first fan 5 is denoted as W1, and the outlet size of the second fan 6 is denoted as W2; W1: B∈[0.3, 0.7], W2: B∈[0.3, 0.7]; the above settings can reasonably arrange the first permeable membrane 4 and the fan by limiting the size of the fan and the size of the first permeable membrane 4, and ensure that the airflow flowing out of the outlet of the first fan 5 or / and the second fan 6 has a comprehensive and effective coverage rate, thereby further improving the overall water vapor permeation rate of the first permeable membrane 4.

[0068] In addition, the normal line of the first permeable membrane 4 passing through the center of the first permeable membrane 4 is denoted as axis L, the plane where the air outlet of the first fan or the second fan is located is denoted as air outlet plane P, the distance between axis L and air outlet plane P is denoted as D1, and the distance between the adjacent edge (second edge 13) of the first permeable membrane 4 and the air outlet of the first fan or the second fan and the air outlet plane P is denoted as D2, D2:D1∈[1,1.5], so that the airflow flowing out of the air outlet plane can maintain effective kinetic energy flow through the first edge 12 of the first permeable membrane 4, thereby increasing the water vapor permeability of the first permeable membrane 4.

[0069] The center line of the first permeable membrane 4, parallel to the bottom surface of the storage room 1, is denoted as center line M (in this embodiment, the center line of the rectangle parallel to the first side 12). The areas of the first permeable membrane 4 located on opposite sides of center line M are denoted as the first permeable zone and the second permeable zone, respectively. The air outlet of the first fan 5 and the air outlet of the second fan 6 face one of the first permeable zones and the other faces the second permeable zone. The airflow from the air outlet of the first fan 5 mainly flows through the permeable zone it faces; the airflow from the air outlet of the second fan 6 mainly flows through the permeable zone it faces. This arrangement ensures a uniform distribution of airflow intensity throughout the entire area of ​​the first permeable membrane 4, fully utilizing the first permeable membrane 4 and improving permeability efficiency. In this embodiment, the first permeable zone is located below the second permeable zone, and the air outlet of the first fan 5 faces the first permeable zone, while the air outlet of the second fan 6 faces the second permeable zone.

[0070] In the above embodiments, 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 the bracket 9, and the bracket 9 is snapped into the storage device 2 at the communication opening. Specifically, the bracket 9 is provided with two first moisture-permeable membranes 4, which are arranged side by side. As an optional configuration, the two first moisture-permeable membranes are spaced apart to effectively improve moisture permeability.

[0071] like Figures 9-12 As shown, a humidifying device is provided inside the drawer; in this embodiment, the humidifying device is located at the front end of the drawer 8; specifically, the inner cavity of the drawer 8 is divided into a first cavity 31 for placing items and a second cavity 32 defined by the humidifying device; wherein, 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] Specifically, the partition plate 30 has an opening 38 connecting the first cavity 31 and the second cavity 32, and a second moisture-permeable membrane 36 is installed at the opening 38. A water storage box 34 is installed inside the second cavity 32; the water storage box 34 is connected to a water guide plate 35, and absorbent cotton 33 is installed inside the water guide plate 35. The absorbent cotton 33 and the second moisture-permeable membrane 36 are adjacent to each other, and their shapes are identical. A water valve is installed on the water storage box 34 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 cavity 3 is relatively small, the moisture from the food will be released to the surrounding area of ​​the storage cavity. This may cause the food to lose moisture; the humidification device can promptly increase the humidity inside the storage cavity, improving the food preservation effect. Specifically, active humidification is performed when the amount of food in the storage cavity 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 the moisture and, located on one side of the second permeable membrane 36, effectively increases the humidity on the side of the second permeable membrane 36 closest to the second cavity 32. This disrupts the humidity balance on both sides of the second permeable membrane 36, allowing moisture to enter the first cavity 31 from within the second cavity 32 through the second permeable membrane 36, thereby increasing the air humidity within the first cavity 31 and effectively ensuring the freshness of the food. During non-active humidification, the water valve is closed to prevent the absorbent cotton 33 from constantly absorbing water and affecting the humidity within the first cavity.

[0073] In this embodiment, the humidifying device includes a housing defining a second chamber 32. The rear wall of the housing forms a partition plate 30 separating the first chamber 31 and the second chamber 32, with an opening 38 formed thereon. A water storage box 34, a water guide plate 35, and absorbent cotton 33 are all installed inside the housing. This makes the humidifying device a separate module, facilitating installation and disassembly.

[0074] In this embodiment, the storage device 2 is installed in the refrigerator compartment, where the humidity is within the range of 3℃ to 8℃. Since the storage cavity 3 exchanges water vapor with the refrigerator compartment through the first moisture-permeable membrane 4, under normal conditions, the humidity in the storage cavity 3 mainly comes from the transpiration of the fruits and vegetables themselves, and the relative humidity in the storage cavity 3 reaches 80%-90%.

[0075] Depending on the type of food stored in storage unit 2, the humidity requirements within storage cavity 3 vary. In this embodiment, the refrigerator is equipped with multiple storage modes, and the control panel 11 allows the user to select the appropriate mode to adjust the humidity within storage cavity 3. As mentioned earlier, the control panel 11 has multiple humidity levels, allowing the user to select the optimal humidity for food preservation within storage cavity 3. The storage mode can be switched via R... N >R Z0 At that time, the first fan is controlled to operate to adjust the humidity in the storage cavity 3 to reach the set storage humidity threshold R. Z0(The humidity threshold corresponding to the set humidity level). Specifically, as mentioned above, the control panel has high humidity, medium humidity, and low humidity levels; the high humidity level corresponds to a high humidity storage mode, the medium humidity level corresponds to a medium humidity storage mode, and the low humidity level corresponds to a low humidity storage mode; each set humidity level has its own corresponding storage humidity threshold R. Z0 The above storage humidity threshold R Z0 When a humidity range is used as a threshold, the maximum value of the range is considered to be above the humidity threshold, the minimum value of the range is considered to be below the humidity threshold, and the range is considered to be within the threshold.

[0076] Under the set storage mode, the second humidity sensor monitors the storage humidity R inside the storage cavity 3. N The first fan is activated promptly to increase the airflow speed on the surface of the first moisture-permeable membrane 4, thereby adjusting the water vapor permeability of the membrane 4 and effectively regulating the humidity inside the storage cavity 3. Ultimately, the humidity inside the storage cavity 3 is maintained at a constant level (within the set humidity range). The humidity monitored by the second humidity sensor inside the storage cavity is recorded as the storage humidity R. N .

[0077] In this invention, multiple cameras are installed inside the storage cavity 3, and these cameras capture images of the storage cavity from different angles. In this embodiment, the controller is configured to acquire the food space ratio γ and storage humidity R inside the storage cavity after the storage device enters storage mode. N Storage humidity change rate α r Among them, the controller acquires the food space ratio γ and the storage humidity change rate α. rAs this is existing technology, it will not be elaborated further. As one feasible approach, the controller's setting for acquiring the food space ratio γ can be configured as follows: The controller includes an acquisition module, a matching module, and a calculation module. The acquisition module acquires images of the storage cavity taken by multiple cameras from different angles, and pairs them to obtain multiple image pairs. An extraction module is coupled to the acquisition module and is used to extract multiple feature points from each image. The matching module is coupled to the extraction module and is used to match each feature point of one image in the same image pair with all feature points of the other image to obtain matched feature point pairs. The calculation module is coupled to the matching module and is used to calculate the proportion of the food in the storage space using the matched feature point pairs. This invention, by setting up multiple cameras and taking images of the food inside the storage cavity from different angles, obtains images of the food from various angles. Then, feature point matching is performed pairwise based on the images from different angles to improve the accuracy of the measurement results. This allows for accurate location of the food's spatial position information. Furthermore, the proportion of the food in the storage cavity is estimated based on the matched feature points, resulting in a highly accurate measurement result. Moreover, taking images of the food from different angles avoids visual blind spots, making the final measurement result more accurate.

[0078] like Figure 13 As shown, when γ < γ0 and R N <R Z0 When the controller opens the water valve, the absorbent membrane absorbs water, and the humidity inside the storage cavity increases through the second permeable membrane. When the food space ratio inside the storage cavity exceeds the set food ratio threshold, the moisture from the food will be released to the surrounding area of ​​the storage cavity due to the relatively small amount of food. This may cause the food to lose moisture. The humidification device can promptly increase the humidity inside the storage cavity and improve the food preservation effect.

[0079] When γ≥γ0, the controller initiates the dehumidification program; where γ0 is the food content threshold. When the food content in the storage cavity exceeds the set food content threshold, the large quantity of food significantly impacts the humidity within the storage cavity, potentially causing rapid changes in humidity and disrupting the constant humidity state. This invention incorporates a dehumidification program to adjust the humidity in the storage cavity in a timely manner, maintaining a constant humidity level.

[0080] The dehumidification process includes:

[0081] In α r1 ≤α r <α r2 And R N ≥R Z1 At that time, the controller controls the first fan to run at the first power P1 until the storage humidity R in the storage cavity is reached. N Reaching the storage humidity threshold R Z0 ; where αr1 α is the threshold for the first rate of change of humidity. r2 R is the second humidity change rate threshold. Z0 R represents the storage humidity threshold under the given storage mode. Z1 R is the first humidity threshold; Z0 <R Z1 .

[0082] As an feasible approach, in α r2 ≤α r And R N ≥R Z2 At that time, the controller controls the first fan to run at the second power P2 until the storage humidity R in the storage cavity is reached. N Reaching the storage humidity threshold R Z0 Among them, R Z2 The second humidity threshold; R Z1 <R Z2 P2 > P1. As an implementable method, the rated power of the first fan is denoted as P0, P1 < P0 < P2; specifically, in this embodiment, P1 = 50% P0, P2 = 100% P0 or P2 = 120% P0.

[0083] 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 reasonable control of the fan's operating power to reduce energy consumption. Furthermore, under these humidity conditions, the controller only controls the first fan, accelerating airflow on the side of the first permeable membrane closest to the storage compartment (outside the storage cavity). This reduces the humidity level outside the sealed storage cavity (especially the first permeable membrane), creating a larger humidity difference. This prevents the first permeable membrane from becoming inefficient or completely ineffective, thus preventing moisture from escaping the storage cavity and increasing the permeability. This, in turn, reduces the accumulation of moisture from food inside the storage cavity, preventing condensation or frost formation and avoiding mold growth. It also prevents food from being blown away by the airflow during dehumidification, thus preventing moisture loss. Additionally, it promotes airflow within the storage compartment, ensuring uniform cooling.

[0084] As another feasible approach, such as Figure 14 As shown, in R N When R2 is greater than or equal to R2, the second fan starts, and the first and second fans work simultaneously; where R2 is the second dehumidification threshold, and R2 > R Z2In other words, when the storage chamber is at high humidity, the first and second fans operate simultaneously. The airflow from the outlet of the second fan promotes air circulation within the storage chamber to prevent condensation due to excessive humidity. Simultaneously, the airflow from the second fan passes through the first moisture-permeable membrane, accelerating the moisture permeation rate of the membrane for rapid dehumidification, thus preventing condensation from forming due to excessive humidity. The combined operation of the first and second fans effectively regulates the humidity within the storage chamber, preventing food from becoming moldy.

[0085] Additionally, in α r2 ≤α r And R N ≥R Z2 At that time, the second humidity threshold R is preset. Z2 =Second dehumidification threshold R2; as an alternative method, such as Figure 15 As shown, a controller can be set to operate the first and second fans simultaneously until the storage humidity R in the storage chamber is reached. N Reaching the storage humidity threshold R Z0 At this time, the first and second fans work together to quickly regulate the humidity inside the storage cavity, preventing the food from becoming moldy.

[0086] In the above embodiment, the storage mode conversion is performed in R N >R Z0 At that time, the controller controls the first fan to run until the storage humidity R in the storage cavity is reached. N The storage humidity threshold R of the converted storage mode is reached. Z0 .

[0087] The controller acquires the continuous closing time t of the storage device. After the continuous closing time of the storage device reaches the set time threshold t0, the controller controls the first fan to run according to the set humidity level (the default storage mode set by the program or the storage mode set by the user) until the storage humidity R in the storage cavity is reached. N Reaching the storage humidity threshold R Z0 .

[0088] The controllers above control the first or second fan to operate at a specific power based on the humidity change rate and storage humidity. They comprehensively consider both the humidity change rate and real-time humidity to control the operation of the fans. On the one hand, they can quickly adjust the humidity in the storage cavity to keep the humidity constant and effectively improve the preservation effect; on the other hand, they can specifically control the operating power of the fans to reduce energy consumption.

[0089] like Figure 13 As shown, one method for controlling the constant humidity and freshness of the refrigerator described above is as follows:

[0090] S1: Set the storage mode, and specify 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 over the surface of the first moisture-permeable membrane, effectively accelerating the water vapor permeability of the first 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, and when the humidity R in the storage cavity... N To reach the set storage humidity threshold R Z0 At that time, the first fan stopped working.

[0091] S2: Under the set storage mode, the second humidity sensor monitors the humidity value inside the storage cavity 3 in real time to obtain the rate of change of storage humidity α inside 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 based on the food space ratio γ; and adjusts the dehumidification based on the storage humidity change rate α. r and storage humidity R N This controls the first fan and adjusts the humidity in the storage cavity 3 in a timely manner, thereby keeping the humidity in the storage cavity 3 constant.

[0092] Specifically, in this embodiment, each storage mode is configured with one food percentage threshold, two humidity change rate thresholds, and two humidity thresholds, denoted as: food percentage threshold γ0, first humidity change rate threshold α, etc. r1 Second humidity change rate threshold α r2 First humidity threshold R Z1 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 .

[0093] S21: During storage under the set storage mode, when γ < γ0 and R N <R Z0 At this time, the controller controls the humidification device to work; specifically, the controller controls the water valve to open, the water-absorbing membrane absorbs water, and the humidity in the storage cavity is increased through the second moisture-permeable membrane;

[0094] S22: During storage in the set storage mode, when γ≥γ0, the controller initiates the dehumidification program; specifically, the dehumidification program includes:

[0095] S23: First humidity change rate threshold α r1 ≤ Storage humidity change rate α r <Second humidity change rate threshold α r2And the storage humidity R N ≥ First humidity threshold R Z1 At that time, the first fan starts and runs at the first power P1 until the storage humidity R in the storage cavity 3 is reached. N Reaching the storage humidity threshold R Z0 The first fan stopped working.

[0096] As an feasible approach, the rated power of the first fan is denoted as P0, and P1 = 50% of P0.

[0097] S24: Second humidity change rate threshold α r2 ≤ Storage humidity change rate α r And the storage humidity R N ≥Second humidity threshold R Z2 At that time, the first fan starts and operates at the second power P2 until the storage humidity R in the storage cavity 3 is reached. N Reaching the storage humidity threshold R Z0 The first fan stops working. As an feasible approach, P2 = 100% P0 or P2 = 120% P0 to quickly achieve humidity regulation.

[0098] like Figure 14 As shown, as another feasible approach, a first dehumidification threshold R1 is preset to be ≤ a first humidity threshold R. Z1 <Second humidity threshold R Z2 <Second dehumidification threshold R2; In the dehumidification process, after step S24, step S3 is added; The specific step S3 is: at the storage humidity R N When the humidity level is ≥ the second dehumidification threshold R2 (the humidity threshold that controls the start of the second fan), the second fan is activated. The first and second fans work simultaneously to dehumidify at high speed, quickly adjusting the humidity in the storage cavity 3 to the storage humidity threshold R2 of its current storage mode. Z0 Wherein, the second dehumidification threshold R2 ≥ the second humidity threshold R Z2 ;

[0099] like Figure 15 As shown, as another feasible approach, a second humidity threshold R is preset. Z2 = Second dehumidification threshold R2; An alternative to step S24 is: Second humidity change rate threshold α r2 ≤ Storage humidity change rate α r And the storage humidity R N ≥Second humidity threshold R Z2 At that time, the first and second fans are set to work simultaneously until the storage humidity R in the storage cavity is reached. N Reaching the storage humidity threshold R Z0 When performing this operation, step S3 is no longer set.

[0100] It should be noted that, under the above storage modes, the first or second fan operates at a specific power based on the humidity change rate and storage humidity. This comprehensive approach, considering both the humidity change rate and real-time humidity, controls fan operation. On one hand, it quickly adjusts the humidity within the storage cavity, maintaining a constant humidity level and effectively improving preservation. On the other hand, it specifically controls fan power to reduce energy consumption. Furthermore, this invention activates a dehumidification program when the food space reaches a set value, effectively controlling the food's impact on humidity to maintain a constant humidity level within the storage cavity.

[0101] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A refrigerator, characterized in that... It includes: The container defines the storage space; A storage device, which is housed within the storage room; The storage device defines a sealed storage cavity, and a communication opening is formed on one side wall of the storage device; A first moisture-permeable membrane is disposed at the communication port of the storage device; A first fan is disposed on the side wall of the storage device having the first moisture-permeable membrane, and is located on the side of the side wall close to the storage compartment; the airflow from the outlet of the first fan flows along the surface of the first moisture-permeable membrane. A humidifying device is disposed inside 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 separates the first cavity and the second cavity; A water storage box is located inside the second cavity; and a water valve is provided on the water storage box; A water guide plate, which cooperates with the water storage box; the water valve controls the flow of water from the water storage box into the water guide plate; An absorbent membrane is disposed within the water guide plate and is adjacent to the second permeable membrane.

2. The refrigerator according to claim 1, characterized in that: The storage cavity is equipped with a second humidity sensor for detecting the humidity inside the storage cavity and multiple cameras that capture images of the storage cavity from different angles; The refrigerator includes a controller configured to acquire the food space ratio γ and storage humidity R in the storage compartment after the storage device enters storage mode. N Storage humidity change rate α r ; When γ < γ0 and R N <R Z0 When the controller opens the water valve, the absorbent membrane absorbs water, and the humidity inside the storage cavity is increased through the second moisture-permeable membrane; When γ≥γ0, the controller initiates the dehumidification program; where γ0 is the food content threshold.

3. The refrigerator according to claim 2, characterized in that: The dehumidification process includes: In α r1 ≤α r <α r2 And R N ≥R Z1 At that time, the controller controls the first fan to operate at a first power P1; Where, α r1 α is the threshold for the first rate of change of humidity. r2 R is the second humidity change rate threshold. Z0 R represents the storage humidity threshold under the given storage mode. Z1 R is the first humidity threshold; Z0 <R Z1 .

4. The refrigerator according to claim 3, characterized in that: The dehumidification process includes: in α r2 ≤α r And R N ≥R Z2 At that time, the controller controls the first fan to operate at the second power P2 until the storage humidity R in the storage cavity is reached. N Reaching the storage humidity threshold R Z0 ; Among them, R Z2 The second humidity threshold; R Z1 <R Z2 P2 > P1.

5. The refrigerator according to claim 4, characterized in that: The rated power of the first fan is denoted as P0, where P1 < P0 < P2.

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

7. The refrigerator according to any one of claims 2-6, characterized in that: The storage cavity is equipped with a second fan; the dehumidification process includes: In R N When R2 is greater than or equal to R2, the second fan starts, and the first and second fans work simultaneously; where R2 is the second dehumidification threshold, and R2 > R Z2 .

8. The refrigerator according to any one of claims 2-3, characterized in that: The storage cavity is equipped with a second fan; the dehumidification process includes: in α r2 ≤α r And R N ≥R Z2 At that time, the first fan and the second fan operate simultaneously until the storage humidity R in the storage cavity is reached. N Reaching the storage humidity threshold R Z0 .

9. The refrigerator according to any one of claims 1-6, characterized in that: The refrigerator is equipped with multiple storage modes; the storage mode can be switched via R. N >R Z0 At that time, the controller controls the first fan to operate until the storage humidity R in the storage cavity is reached. N The storage humidity threshold R of the converted storage mode is reached. Z0 .

10. The refrigerator according to any one of claims 1-6, characterized in that: The controller acquires the continuous closing time t of the storage device. After the continuous closing time of the storage device reaches a 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 is reached. N Reaching the storage humidity threshold R Z0 .

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