Refrigerator, and control method and apparatus for refrigerator

Abstract

The present application relates to the technical field of refrigeration devices, and discloses a refrigerator, comprising a liner, at least provided with a plurality of air ports; and a drawer assembly, arranged in the liner, the drawer assembly comprising a drawer cover plate and a drawer body which are slidably connected to each other, the drawer cover plate being provided with a moisture-permeable assembly, the top of the drawer assembly being provided with a first vent part and a second vent part opposite to each other, airflow blown out from at least one air port flowing into the drawer body through the first vent part and flowing out through the second vent part, wherein the airflow flowing into the drawer body forms an auxiliary air path on the lower surface of the drawer cover plate, and the auxiliary air path is used for preventing frost from forming on the lower surface of the moisture-permeable assembly. The present application further discloses a control method and apparatus for a refrigerator.

Description

Refrigerator, control method and device for refrigerator

[0001] This application is based on Chinese patent application number 202310701625.X, filed on June 13, 2023, Chinese patent application number 202321508606.7, filed on June 13, 2023, and Chinese patent application number 202310701635.3, filed on June 13, 2023, and claims the priority of the above-mentioned Chinese patent applications. The entire contents of the above-mentioned Chinese patent applications are hereby introduced into this application as a reference. Technical Field

[0002] The present application relates to the field of refrigeration technology, for example, to a refrigerator, and a control method and device for a refrigerator. Background Art

[0003] As the refrigerator market evolves, high-end, large refrigerators are increasingly popular. However, as refrigerator capacity increases, consumers are demanding new ways to preserve food. This requires adding drawers with freezer compartments to accommodate the high-humidity storage of meat rolls, ready-to-eat meals, and pre-prepared dishes. These drawers prevent cold air from blowing directly onto the food during the refrigeration process. Furthermore, their moisture-permeable membrane components maintain a high humidity environment, effectively preventing drying out and other nutrient loss.

[0004] However, the related art moisturizing drawer with the function of keeping food fresh can only be used in the refrigerator compartment. If the existing moisturizing drawer is directly used in the freezer compartment, frost will form on the top of the moisturizing drawer, thereby affecting the moisture permeability of the moisture permeable component and further affecting the humidity inside the drawer.

[0005] Summary of the Invention

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The embodiments of the present disclosure provide a refrigerator, a control method and a device for the refrigerator, which can not only adjust the humidity in the drawer, but also reduce the amount of frost on the moisture-permeable component on the top of the drawer, thereby ensuring the moisturizing and fresh-keeping effect of food.

[0008] In some embodiments, the refrigerator includes: an inner tank, which is constructed with at least multiple air outlets; a drawer assembly, which is arranged in the inner tank, and the drawer assembly includes a drawer cover and a drawer body that are slidably connected, the drawer cover is provided with a moisture permeable assembly, and the top of the drawer assembly is constructed with a first ventilation part and a second ventilation part that are relatively arranged; the air flow blown out from at least one air outlet flows into the drawer body through the first ventilation part and flows out from the second ventilation part, wherein the air flow flowing into the drawer body forms an auxiliary air path on the lower surface of the drawer cover, and the auxiliary air path is used to prevent frost on the lower surface of the moisture permeable assembly.

[0009] In some embodiments, the control method for a refrigerator includes: the refrigerator further comprising a main fan, a first air outlet of the inner tank being located above the drawer assembly, and airflow blown out by the main fan through the first air outlet forming a main air path above the drawer assembly; a second air outlet of the inner tank corresponding to the drawer assembly, and airflow blown out by the main fan through the second air outlet being used to form an auxiliary air path in the drawer assembly or to accelerate the airflow velocity of the auxiliary air path;

[0010] The control method includes: when the first air vent and the second air vent are both opened to discharge air, obtaining the temperature value inside the drawer assembly; when the temperature value of the drawer assembly is higher than the shutdown temperature of the refrigerator, obtaining the humidity value inside the drawer assembly, and controlling the switch of the second air vent according to the ratio of the humidity value of the drawer assembly to the first humidity threshold value; when the temperature value of the drawer assembly is lower than or equal to the shutdown temperature of the refrigerator, controlling the main fan to be turned off.

[0011] In some embodiments, the control device for a refrigerator includes a processor and a memory storing program instructions, and the processor is configured to execute the control method for a refrigerator provided in the above embodiments when running the program instructions.

[0012] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0014] FIG1 is a schematic cross-sectional view of an embodiment of the refrigerator provided by the present disclosure;

[0015] FIG2 is an exploded schematic diagram of the drawer assembly and the inner container provided by an embodiment of the present disclosure;

[0016] FIG3 is a structural diagram of the drawer assembly provided in an embodiment of the present disclosure;

[0017] FIG4 is a schematic cross-sectional view of another embodiment of the refrigerator provided in an embodiment of the present disclosure;

[0018] FIG5 is an exploded schematic diagram of another embodiment of the drawer assembly and the inner container provided in an embodiment of the present disclosure;

[0019] FIG6 is a schematic diagram of the assembly of the damper assembly, the second damper, and the inner liner provided in an embodiment of the present disclosure;

[0020] FIG7 is a cross-sectional schematic diagram of the damper assembly, the second damper, and the inner liner provided in an embodiment of the present disclosure;

[0021] FIG8 is a partial schematic diagram of the damper assembly at point A in FIG7 with the second damper opened;

[0022] FIG9 is a partial schematic diagram of the damper assembly closing the second air outlet according to an embodiment of the present disclosure;

[0023] FIG10 is a partial explosion diagram of the refrigerator provided in an embodiment of the present disclosure;

[0024] FIG11 is a cross-sectional schematic diagram of the refrigerator provided by an embodiment of the present disclosure from another perspective;

[0025] FIG12 is a schematic diagram of an embodiment of the circulating air circuit provided in an embodiment of the present disclosure;

[0026] FIG13 is a schematic diagram of another embodiment of a circulating air duct provided in an embodiment of the present disclosure;

[0027] FIG14 is an exploded schematic diagram of the moisture permeable assembly provided in an embodiment of the present disclosure;

[0028] FIG15 is a cross-sectional schematic diagram of the moisture permeable assembly provided in an embodiment of the present disclosure;

[0029] FIG16 is a schematic structural diagram of the water vapor guide surface, condensed water guide surface, and water-stopping step provided in an embodiment of the present disclosure;

[0030] FIG17 is a cross-sectional schematic diagram of the moisture permeable assembly provided by an embodiment of the present disclosure from another perspective;

[0031] FIG18 is an exploded schematic diagram of another embodiment of the moisture permeable assembly provided in an embodiment of the present disclosure;

[0032] FIG19 is a cross-sectional schematic diagram of another embodiment of the moisture permeable assembly provided in an embodiment of the present disclosure;

[0033] FIG20 is a line chart comparing the frost weight of the auxiliary air duct and the ordinary air duct provided by an embodiment of the present disclosure;

[0034] FIG21 is a line graph showing a humidity comparison between the moisturizing drawer provided by an embodiment of the present disclosure and the conventional drawer;

[0035] FIG22 is a schematic diagram of a control method for a refrigerator provided by an embodiment of the present disclosure;

[0036] FIG23 is a schematic diagram of another control method for a refrigerator provided by an embodiment of the present disclosure;

[0037] FIG24 is a schematic diagram of another control method for a refrigerator provided by an embodiment of the present disclosure;

[0038] FIG25 is a schematic diagram of another control method for a refrigerator provided by an embodiment of the present disclosure;

[0039] FIG26 is a schematic diagram of a control device for a refrigerator provided in an embodiment of the present disclosure.

[0040] Reference numerals:

[0041] 10: Inner liner; 101: First air outlet; 102: Second air outlet; 103: Third air outlet; 104: Air guide duct; 105: Slide rail; 20: Drawer body; 30: Drawer cover; 40: Moisture permeable assembly; 401: Lower seat; 4011: First hollow portion; 4012: Water vapor guide surface; 4013: Condensate guide surface; 4014: Water stop step; 4015: Boss; 4016: Elastic claw; 402: Moisture permeable membrane; 403: Upper cover; 4031: Second hollow portion; 403 2: Limiting plate; 4033: Limiting groove; 4034: Clamping part; 4035: Guide protection part; 4036: Elastic deformation part; 4037: Elastic recovery part; 50: Damper assembly; 501: Damper sliding piece; 5011: Rack part; 5012: Second ventilation port; 502: Transmission gear; 503: Motor; 60: Circulating fan; 70: Humidity sensor; 100: First ventilation part; 200: Second ventilation part; 1: Processor; 2. Memory; 3: Communication interface; 4: Bus. DETAILED DESCRIPTION

[0042] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0043] The reference to any related art in the specification is not and should not be taken as an admission or any form of suggestion that the related art forms part of the common general knowledge in the application area or any other jurisdiction, or that the related art can be reasonably understood and regarded as relevant by a person skilled in the art.

[0044] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0045] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0046] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0047] Unless otherwise stated, the term "plurality" means two or more.

[0048] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0049] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0050] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0051] The moisturizing drawer with the function of preserving food in the related art can only be applied to the cold storage compartment of the refrigerator. If the existing moisturizing drawer is directly applied to the freezing compartment, frost will form on the top of the moisturizing drawer.

[0052] As shown in Figures 1 to 26 , an embodiment of the present disclosure provides a refrigerator comprising an inner container 10 and a drawer assembly. The inner container 10 and drawer assembly provided in this embodiment can be used in a freezer compartment to meet user needs for moisturizing and preserving food within the freezer compartment. However, it should be noted that the inner container 10 and drawer assembly provided in this embodiment are not limited to the freezer compartment and can also be used in a refrigerated compartment or a variable temperature compartment.

[0053] The inner liner 10 is constructed with at least a plurality of air vents; a drawer assembly is arranged in the inner liner 10, and the drawer assembly includes a drawer cover 30 and a drawer body 20 that are slidably connected, the drawer cover 30 is provided with a moisture permeable assembly 40, and the top of the drawer assembly is constructed with a first ventilation portion 100 and a second ventilation portion 200 that are relatively arranged; the air flow blown out from at least one air vent flows into the drawer body 20 through the first ventilation portion 100 and flows out from the second ventilation portion 200, wherein the air flow flowing into the drawer body 20 forms an auxiliary air path on the lower surface of the drawer cover 30, and the auxiliary air path is used to prevent frost on the lower surface of the moisture permeable assembly 40.

[0054] The inner wall of the liner 10 is provided with an air supply duct, which is equipped with a main blower. The airflow blown by the main blower flows through the air supply duct and is blown out of two air outlets into the interior of the room, achieving a cooling effect. It should be noted that the airflow blown out of the air outlets of the liner 10 is the same in terms of temperature and humidity. In this article, the air outlets are named separately only for different locations and different functions, and for ease of description.

[0055] The drawer assembly is located within the inner container 10 and is slidably connected to the drawer body 20 via a drawer cover 30. The drawer cover is mounted on the drawer body 20, forming a relatively enclosed space within the drawer. This prevents airflow from the vents from directly entering the drawer and acting on the surface of the food, causing significant moisture loss and affecting the taste and quality of the food.

[0056] The drawer assembly, including the drawer cover 30, can maintain a high-humidity environment for the food inside the drawer. However, if the humidity exceeds a preset value, not only will the taste and quality of the food inside the drawer be affected, but the freezing and refrigeration effect of the food will also be reduced. Therefore, the drawer cover 30 provided in this embodiment, including the moisture-permeable assembly 40, not only achieves the purpose of covering the drawer to form a closed space, but also can adjust the humidity of the environment inside the drawer through the moisture-permeable assembly 40, ensuring that the food inside the drawer is in a humidity environment that can achieve both freshness preservation and freezing effects.

[0057] In this embodiment, the first ventilation portion 100 and the second ventilation portion 200 constructed at the top of the drawer assembly allow airflow from the air outlet to flow through the interior of the drawer body 20. Due to the location of the first ventilation portion 100 and the second ventilation portion 200 at the top of the drawer assembly, the pressure differential causes the airflow into the drawer body 20 to flow along the lower surface of the drawer cover 30, forming an auxiliary air path, i.e., a parallel flow parallel to the drawer cover 30. This flow through the lower surface of the drawer cover 30 removes moisture from the lower surface of the moisture permeable assembly 40, preventing condensation, i.e., frosting, on the lower surface of the moisture permeable assembly 40, which would otherwise affect its permeability. Furthermore, the auxiliary air path is parallel to the lower surface of the drawer cover 30, substantially avoiding contact with food inside the drawer body 20. This prevents cold air from directly blowing on the food, ensuring food freshness.

[0058] In this article, the phrase "the air flow blown out from at least one air outlet flows through the first ventilation portion 100 into the drawer body 20 and flows out from the second ventilation portion 200" can be interpreted as follows: the first ventilation portion 100 is the air inlet, and the second ventilation portion 200 is the air outlet. The first ventilation portion 100 can be located at the back of the drawer assembly (i.e., close to the air outlet), but the first ventilation portion 100 can also be located at the front of the drawer assembly. When the first ventilation portion 100 is located at the back of the drawer assembly, the second ventilation portion 200 is located at the front of the drawer assembly; conversely, when the first ventilation portion 100 is located at the front of the drawer assembly, the second ventilation portion 200 is located at the back of the drawer assembly.

[0059] When the first ventilation part 100 is located at the front of the drawer assembly, that is, the air enters from the front end of the drawer assembly. The air outlet has a large air volume and a high wind speed. The second ventilation part 200 is the air outlet. The air flow blown out of the air outlet forms a negative pressure area at the second ventilation part 200, allowing the cold air to flow through the lower surface of the drawer cover 30 at a faster speed and flow out from the second ventilation part 200. In addition, it can also accelerate the reduction of humidity in the drawer. When the first ventilation part 100 is located at the back of the drawer assembly, that is, the air enters from the back of the drawer assembly and the air exits from the front end. The air flow blown out of the air outlet can directly flow into the drawer through the first ventilation part 100 and then be blown out from the second ventilation part 200. Similarly, the air flow velocity of the air outlet is relatively fast, and the air flow can quickly flow out from the second ventilation part 200, preventing the cold air from blowing directly onto the surface of the food in the drawer and affecting the fresh-keeping effect of the food.

[0060] In some embodiments, the moisture-permeable component 40 includes a moisture-permeable membrane 402 having a three-layer structure, namely a hydrophobic layer, a water-conducting layer, and a hydrophilic layer. The moisture-permeable pore size of the moisture-permeable membrane 402 can be adjusted automatically according to the humidity value above a certain humidity threshold. When the main fan stops supplying air, due to the inherent characteristics of the moisture-permeable membrane 402, when the relative humidity is above 85%, it actively transmits moisture to the outside; when the relative humidity is below 80%, it stops transmitting moisture to the outside to prevent the moisture content of the food from decreasing. At this time, through indirect cooling of the drawer body 20 and the drawer cover 30, and the first and second ventilation sections 100 and 200 formed under weak natural convection conditions, the temperature inside and outside the drawer is consistent, thereby achieving precise temperature control inside the drawer. In actual application, since the temperature of the freezer compartment is controlled by a temperature sensor, when the temperature is lower than -20°C, the compressor stops refrigeration. When the temperature rises to -15°C, the moisture lost by the food itself and the effect of the moisture-permeable membrane 402 will increase the relative humidity in the drawer to about 85%; when the temperature reaches -15°C, the compressor starts refrigeration. When the temperature drops to -20°C, the humidity in the drawer is reduced, which will reduce the relative humidity in the drawer to about 80%, thereby ensuring that the food in the drawer is always maintained in a high humidity environment of 80% to 85% relative humidity, thereby improving the preservation effect of the food.

[0061] For example, the moisture-permeable membrane 402 has a three-layer structure. At relative humidity levels above 80%, the membrane becomes hydrophobic on the surface facing the drawer interior, the middle layer (i.e., the nanoporous structure layer) becomes water-conductive, and the layer facing away from the drawer interior becomes hydrophilic. To protect the moisture-permeable membrane 402, non-woven fabric can be added on both sides of the membrane and plastic-sealed around the perimeter to protect it from external damage.

[0062] The auxiliary air duct formed in this embodiment can not only effectively reduce the amount of frost on the drawer cover 30, but also ensure the humidity environment inside the drawer. Relevant experimental data can be found in Table 1 and Figures 20 and 21.

[0063] Table 1

[0064] As shown in Table 1, Figures 20, and 21, compared to moisturizing drawers without air ducts or using other air ducts, the moisturizing drawer of this embodiment, through the auxiliary air duct, can effectively reduce frost accumulation in the moisture permeable assembly 40 by 50%. Furthermore, compared to existing freezer drawers, the moisturizing drawer of this embodiment increases the humidity within the drawer by at least 40%.

[0065] In some embodiments, the inner liner 10 includes a first air outlet 101, which blows out air through the upper surface of the drawer cover 30 to form a main air path to blow away moisture that has penetrated from the moisture permeable component 40; wherein the first air outlet 101 is arranged horizontally and is higher than the drawer cover 30. As shown in conjunction with Figures 1, 2, 4, and 5, the first air outlet 101 can be regarded as the main air outlet of the air supply duct, and its main function is to cool the space inside the freezer compartment. The air flow blown out from the first air outlet 101 has not only a large flow rate but also a fast flow rate. During the air supply duct air supply phase, the cold air blown out from the first air outlet 101 blows over the top of the drawer cover 30, that is, the air flow in the main air path flows over the top of the drawer cover 30, which can quickly remove moisture that has penetrated from the moisture permeable component 40, ensuring that the moisture permeable component 40 is in an efficient moisturizing state. The horizontal air outlet setting of the first air outlet 101 can make the air flow blown out by the first air outlet 101 parallel to the drawer cover 30, thereby cooperating with the auxiliary air path, so that the auxiliary air path forms a parallel flow on the lower surface side of the drawer cover 30, which not only quickly reduces the high humidity water vapor under the drawer cover 30 and prevents the risk of freezing of the drawer cover 30 due to excessive water vapor, but also prevents cold air from blowing directly on the food, thereby keeping the food fresh.

[0066] In some embodiments, the liner 10 further includes: a second air outlet 102, located below the first air outlet 101, and the second air outlet 102 is used to form an auxiliary air path or accelerate the air flow rate of the auxiliary air path. As shown in Figures 1, 2, 4 and 5. The second air outlet 102 is located below the first air outlet 101, and the second air outlet 102 is opened for the auxiliary air path. The air flow rate of the auxiliary air path is much smaller than the air flow rate of the main air path. In this way, it can be considered that the flow area of ​​the second air outlet 102, that is, the air outlet area, is smaller than the flow area of ​​the first air outlet 101.

[0067] In some embodiments, when the second air outlet 102 discharges air horizontally, the second air outlet 102 corresponds to the first ventilation portion 100 or the second ventilation portion 200 of the drawer assembly, so that the blown air flows into the drawer body 20 to form an auxiliary air path. When the second air outlet 102 is discharging air horizontally, the second air outlet 102 is used to form an auxiliary air path. In combination with the above, for the convenience of description and distinction, the first ventilation part 100 is defined as the air inlet, and the second air outlet 102 is set corresponding to the first ventilation part 100. The air flow blown out by the second air outlet 102 flows into the drawer through the first ventilation part 101. Although the air flow rate blown out by the second air outlet 102 is not as good as that of the first air outlet 101, the flow rate of the air blown out from the second air outlet 102 is still faster. When the air flow enters the drawer body 20, the air flow still flows forward rapidly and flows out through the second ventilation part 200 located at the front end, thereby forming a parallel wind curtain layer on the lower surface of the drawer cover 30, blowing away the water vapor on the lower surface of the drawer cover 30, thereby not only quickly reducing the high humidity water vapor under the drawer cover 30, avoiding the risk of freezing of the drawer cover 30 and the moisture permeable component 40 due to excessive water vapor, but also preventing cold air from blowing directly on the food, thereby keeping the food fresh.

[0068] In some embodiments, when the second air outlet 102 is vertical and discharges air downward, the second air outlet 102 is higher than the first ventilation part 100 or the second ventilation part 200 of the drawer assembly, and the second air outlet 102 is used to blow away the airflow flowing out of the drawer assembly, increase the pressure difference to speed up the airflow rate of the auxiliary air path. As shown in Figures 4 and 5. When the second air outlet 102 is vertical and discharges air downward, the second air outlet 102 is used to speed up the airflow rate of the auxiliary air path. At this time, the air outlet of the drawer assembly is arranged close to the second air outlet 102, that is, the second ventilation part 200 is located at the back of the drawer assembly, and the first ventilation part 100 is located at the front of the drawer assembly. The second air outlet 102 is higher than the second ventilation part 200, so that the air flow flowing out of the second ventilation part 200 can be quickly blown away by the second air outlet 102, so that a certain pressure difference is formed at the second ventilation part 200, which can accelerate the air flow in the auxiliary air path in the drawer to flow to the second ventilation part 200, thereby quickly reducing the high humidity water vapor under the drawer cover 30, avoiding the risk of freezing of the drawer cover 30 and the moisture permeable component 40 due to excessive water vapor, and can also prevent cold air from blowing directly on the food, thereby keeping the food fresh.

[0069] In some embodiments, the refrigerator further includes: a damper assembly 50, which is provided at the second air outlet 102, for adjusting the flow area of ​​the second air outlet 102. As shown in Figures 6 to 9. By adjusting the flow area of ​​the second air outlet 102 through the damper assembly 50, that is, adjusting the air volume of the second air outlet 102, the auxiliary air path is adjusted, thereby adjusting the humidity control in the drawer. The drawer assembly provided in this embodiment can not only adjust the humidity in the drawer through the moisture permeable assembly 40, but also adjust the humidity in the drawer by adjusting the air flow rate of the second air outlet 102 and the auxiliary air path. The moisture permeable assembly 40 and the auxiliary air path cooperate with each other, not only ensuring the moisture permeability effect of the moisture permeable assembly 40, but also ensuring the moisturizing and fresh-keeping effect of the drawer.

[0070] In some embodiments, a slide rail 105 is provided at the second air outlet 102, and the damper assembly 50 includes: a damper sliding piece 501, which is slidably connected to the slide rail 105 and is used to adjust the flow area of ​​the second air outlet 102. The end of the damper sliding piece 501 is configured with a rack portion 5011; a transmission gear 502, which is meshed and connected to the rack portion 5011; and a motor 503, which is provided in the inner liner 10 and is transmission-connected to the transmission gear 502. The motor 503 drives the transmission gear 502 to rotate, thereby driving the damper sliding piece 501 to move back and forth linearly, thereby adjusting the flow area of ​​the second air outlet 102. As shown in Figures 6 to 9, the damper sliding piece 501 blocks the ventilation area of ​​the second air outlet 102, so that the flow area of ​​the second air outlet 102 can be adjusted. The motor 503 drives the transmission gear 502 to rotate, and the transmission gear 502 engages with the rack portion 5011 of the damper sliding piece 501 , thereby driving the damper sliding piece 501 to move back and forth linearly along the slide rail 105 , thereby adjusting the flow area of ​​the second air outlet 102 .

[0071] To more efficiently adjust the flow area of ​​the second air vents 102, in some embodiments, the second air vents 102 include multiple first vents, and the damper slider 501 is also configured with multiple second vents 5012 that match the first vents. When the second vents 5012 correspond to the first vents, the second air vents 102 are open; when the area between adjacent second vents 5012 corresponds to the first vents, the second air vents 102 are closed. This overcomes the limitation of the damper slider 501 requiring too much space to completely close the second air vents 102 by sliding it from one end to the other.

[0072] In some embodiments, the refrigerator further comprises: a circulating fan 60, located above the moisture permeable component 40, which is activated when the first air outlet 101 stops supplying air, forming a circulating air path to blow away moisture on the surface of the moisture permeable component 40. As shown in conjunction with Figures 10 to 13. When the first air outlet 101 stops supplying air, the circulating fan 60 is activated. The airflow generated by the circulating fan 60 can draw air or blow air from the moisture permeable component 40 on the drawer cover 30, blowing away or carrying away moisture on the surface of the moisture permeable component 40 and exchanging it with the cold air in the freezer compartment. This prevents the risk of ice forming on the surface of the moisture permeable component 40 due to poor moisture removal, thereby affecting the moisturizing effect of the drawer, and eliminates the quality risk of ice forming on the inner wall and drawer cover due to excessive humidity inside the drawer.

[0073] For example, when the drawer assembly is located above the freezer compartment, a guide air duct 104 is constructed at the top of the inner container 10, and the circulation fan 60 is connected to the guide air duct 104. For example, when the first air outlet 101 stops supplying air, the circulation fan 60 starts, drawing air outward from the moisture-permeable assembly 40. Specifically, the moisture-permeable assembly 40 is located on the air inlet side of the circulation fan 60, and the air outlet side of the circulation fan 60 faces the guide air duct 104. When the circulation fan 60 is started, air on the upper surface of the drawer cover 30 flows into the circulation fan 60 under suction and is blown out into the guide air duct 104. The air flowing out of the guide air duct 104 then enters the circulation fan 60 again under suction, and this cycle repeats. This reciprocating airflow, flowing through the upper surface of the moisture-permeable assembly 40, can promptly remove moisture that has permeated the assembly 40, preventing the risk of ice formation on the surface of the moisture-permeable assembly 40 due to poor moisture removal.

[0074] For example, the first air outlet 101 stops supplying air, and the circulating fan 60 starts blowing air toward the moisture permeable assembly 40. Specifically, the moisture permeable assembly 40 is located on the outlet side of the circulating fan 60, and the inlet side of the circulating fan 60 faces the guide air duct 104. When the circulating fan 60 is activated, airflow on the upper surface of the drawer cover 30 flows along the drawer cover 30, then enters the circulating fan 60 through the guide air duct 104 and is then blown out by the circulating fan 60, repeating this cycle. This reciprocating airflow, flowing through the upper surface of the moisture permeable assembly 40, can promptly blow away moisture that has permeated the assembly 40, preventing the risk of ice formation on the surface of the moisture permeable assembly 40 due to poor moisture drainage.

[0075] It should be noted that there is a certain gap between the circulation fan 60 and the surface of the moisture permeable component 40, so that the airflow above the drawer cover 30 can flow into the gap between the circulation fan 60 and the surface of the moisture permeable component 40, thereby blowing away or taking away the water vapor on the surface of the moisture permeable component 40.

[0076] In some embodiments, the refrigerator further includes: a humidity sensor 70, which is provided in the drawer body 20, for detecting the humidity inside the drawer body 20; wherein the humidity sensor 70 is connected to the damper assembly 50 and / or the circulating fan 60 at the second air outlet 102, and the damper assembly 50 and / or the circulating fan 60 is triggered according to the signal transmitted by the humidity sensor 70 to maintain the humidity inside the drawer body 20 within a set range.

[0077] For example, when the humidity sensor 70 detects that the relative humidity inside the drawer has dropped to 82%, it sends a signal to trigger the motor 503 of the damper assembly 50 to operate, causing the damper slider 501 to close the second air port 102, thereby reducing the airflow rate and flow rate of the auxiliary air path to prevent the humidity inside the drawer from further decreasing. When the air supply duct stops supplying air, due to the inherent characteristics of the moisture-permeable membrane 402, when the relative humidity is above 85%, it actively transmits moisture to the outside; when the relative humidity is below 80%, it stops transmitting moisture to the outside, preventing the humidity inside the drawer from decreasing. At this time, through indirect cooling of the drawer body 20 and the drawer cover 30, and the weak natural convection conditions of the first ventilation section 100 and the second ventilation section 200, the temperature inside and outside the drawer is consistent, thereby achieving precise temperature control inside the drawer. When the humidity sensor 70 detects that the relative humidity is higher than 87%, the circulating fan 60 is started, and the damper assembly 50 is opened, that is, the second air outlet 102 is opened to reduce the relative humidity in the drawer to 82%. The circulating fan 60 is stopped and the second air outlet 102 is closed, thereby ensuring that the food in the drawer is always maintained in a high humidity environment with a relative humidity of 80% to 85%, thereby improving the preservation effect of the food.

[0078] In some embodiments, the inner tank 10 further includes: a third air outlet 103, located below the second air outlet 102; the third air outlet 103 corresponds to the middle or lower part of the drawer body 20 to quickly cool the drawer. As shown in Figure 10. The airflow blown out by the third air outlet 103 has the same temperature and humidity as the airflow blown out by the first air outlet 101 and the second air outlet 102. By blowing the airflow directly to the middle or lower part of the drawer body 20 through the third air outlet 103, the middle and lower parts of the drawer body 20 can be quickly cooled, thereby quickly cooling the food in the drawer, and avoiding the drawer cover 30 blocking the cold air from blowing directly on the food, which slows down the freezing rate of the food.

[0079] The first air vents 101 and the second air vents 102 provided in this embodiment can be regarded as upper air vents relative to the drawer body 20, while the third air vents 103 can be regarded as lower air vents relative to the drawer body 20. Two sets of air vents are provided longitudinally at the rear of the drawer body 20. The upper air vents are used in conjunction with the perspective assembly to achieve humidity control and frost control (reduce the amount of frost formation) in the drawer, while the lower air vents are used to blow cold air directly to the bottom and side walls of the drawer other than the top to achieve rapid cooling. On the one hand, this can cool the food in the drawer more quickly. On the other hand, when storing a small amount of food or the drawer is relatively high in the longitudinal direction, which is prone to high longitudinal humidity, the limited moisture in the drawer can be locked in the form of condensation on the inside of the drawer, avoiding the disadvantageous situation where only the upper air vents exist, resulting in continuous upward migration and rapid loss of moisture, and avoiding the continuous formation of a vertical humidity gradient in the drawer body 20, resulting in continuous and rapid loss of moisture.

[0080] In some embodiments, the air outlet areas of the upper and lower air outlets are adjustable. When used under the normal moisturizing function, the air outlet area of ​​the upper air outlet is smaller than the air outlet area of ​​the lower air outlet. The upper air outlet is used to achieve humidity control and frost control in the moisturizing drawer, and the lower air outlet has a large area to achieve rapid cooling. On the one hand, it can cool the food in the drawer more quickly, and on the other hand, it can lock the water vapor in the drawer in the form of condensation on the inside of the drawer, so that the relative humidity of the air at the bottom is higher and closer to the humidity on the surface of the food, thereby avoiding the continuous migration of moisture in the food. The upper air outlet has a smaller area, a higher relative temperature, and a lower relative humidity. While controlling frost, it minimizes the loss of moisture, thereby avoiding the continuous formation of an upper and lower humidity gradient in the drawer body 20, which leads to continuous and rapid loss of moisture.

[0081] Furthermore, if the upper cover 403 is frosted due to improper use by the user, the upper air vent area can be increased while food is stored in the drawer to accelerate air circulation at the top and eliminate the frosting. After the abnormality is corrected, the air outlet area of ​​the air vent can be restored to normal. It is not necessary to empty the food in the drawer before defrosting.

[0082] In some embodiments, the first ventilation portion 100 is constructed on the top of the drawer cover 30, the drawer body 20, or is enclosed between the drawer cover 30 and the drawer body 20. As shown in FIG3 , when the first ventilation portion 100 is constructed on the top of the drawer cover 30 or the drawer body 20, the first ventilation portion 100 can be a plurality of ventilation holes or a ventilation slot provided therethrough. When the first ventilation portion 100 is constructed between the drawer cover 30 and the drawer body 20, the first ventilation portion 100 can be a gap, a gap, etc. formed between the drawer cover 30 and the drawer body 20.

[0083] In some embodiments, the second ventilation portion 200 is constructed to be formed on the top of the drawer cover 30, the drawer body 20, or between the drawer cover 30 and the drawer body 20. As shown in Figure 3. In the case where the second ventilation portion 200 is constructed on the top of the drawer cover 30 or the drawer body 20, the second ventilation portion 200 can be a plurality of ventilation holes, or a ventilation groove provided throughout. In the case where the second ventilation portion 200 is constructed between the drawer cover 30 and the drawer body 20, the second ventilation portion 200 can be a gap, a flash gap, etc. formed between the drawer cover 30 and the drawer body 20. It should be noted that the specific positions of the first ventilation portion 100 and the second ventilation portion 200 can be determined according to actual conditions, and are not limited to the same component (i.e., the top of the drawer cover 30 or the drawer body 20), and can be formed between the drawer cover 30 and the drawer body 20.

[0084] As shown in Figures 14 to 19 , in some embodiments, the moisture permeable assembly 40 includes a lower seat 401 and a moisture permeable membrane 402. The lower seat 401 is configured with a first hollow portion 4011 for covering the top of the drawer; the moisture permeable membrane 402 is disposed above the lower seat 401; the inner sidewall of the first hollow portion 4011 is configured with an upwardly inclined water vapor guide surface 4012 and a downwardly inclined condensation water guide surface 4013, with the condensation water guide surface 4013 located above and intersecting the water vapor guide surface 4012. In this way, the moisture permeable component 40 is located at the top of the drawer, and the water vapor in the drawer passes through the first hollow part 4011 of the lower seat 401 and moves toward the moisture permeable membrane 402, and the purpose of moisture permeation and humidity adjustment is achieved through the moisture permeable membrane 402; through the water vapor guide surface 4012 and the condensation water guide surface 4013 of the first hollow part 4011, not only the fluidity of water vapor can be increased, but also the condensation water condensed on the inner side of the moisture permeable membrane 402 can be guided, thereby preventing water vapor and condensation water from freezing on the inner side of the lower seat 401 and the moisture permeable membrane 402, and effectively reducing the amount of frost.

[0085] When the lower seat 401 is placed horizontally, the inner sidewall of the first hollow portion 4011 protrudes outward and has a triangular or similar cross-sectional shape. Therefore, it can be understood that the condensate guide surface 4013 and the water vapor guide surface 4012 are two intersecting planes protruding outward from the inner sidewall of the first hollow portion 4011. The condensate guide surface 4013 is located above the water vapor guide surface 4012.

[0086] When the drawer cover 30 with the moisture-permeable component 40 is covered on the drawer body 20, the water vapor in the drawer body 20 flows upward along the water vapor guide surface 4012. During the flow, the water droplets carried in the water vapor condense into condensed water after contacting the water vapor guide surface 4012, and then slide downward along the inclined water vapor guide surface 4012 and drip into the drawer body 20. This not only reduces the discharge of water vapor in the drawer, but also prevents the water vapor from frosting on the side wall of the first hollow part 4011, thereby causing blockage and affecting the flow of water vapor.

[0087] Because the drawer cover 30 indirectly cools the food inside the drawer, the air outside the drawer is cooler than the temperature inside. Therefore, when moisture inside the drawer exceeds the set humidity and is dissipated through the moisture-permeable assembly 40, the moisture condenses on contact with the lower cover, forming condensed water on the condensation guide surface 4013 of the first hollow portion 4011. Due to the inclined configuration of the condensation guide surface 4013, the condensed water flows downward along the inclined surface, thus preventing condensation and freezing on the condensation guide surface 4013. Furthermore, the condensation guide surface 4013 faces the moisture-permeable membrane 402, which not only allows moisture to flow along the condensation guide surface 4013, guiding the condensed water, but also increases the contact area between the moisture on the first hollow portion 4011 and the moisture-permeable membrane 402.

[0088] In some embodiments, a water-stopping step 4014 is constructed at the intersection of the vapor guide surface 4012 and the condensate guide surface 4013. The water-stopping step 4014 is used to prevent water droplets carried by the vapor that has moved along the vapor guide surface 4012 and reached the water-stopping step 4014 from continuing to move upward. The ends of the water-stopping step 4014 connect the top of the vapor guide surface 4012 and the bottom of the condensate guide surface 4013, respectively. The water-stopping step 4014 is located at the intersection of the vapor guide surface 4012 and the condensate guide surface 4013, with the bottom of the condensate guide surface 4013 protruding from the top of the vapor guide surface 4012. When the vapor in the drawer moves upward along the vapor guide surface 4012 and reaches the water-stopping step 4014, some of the water droplets carried by the vapor adhere to the vapor guide surface 4012. Guided by the inclined configuration of the vapor guide surface 4012, the water droplets adhere to the vapor guide surface 4012 move downward and drip off. The remaining water droplets carried by the vapor move to water-stop step 4014, where they adhere to the surface of step 4014 and then drip into the drawer. It should be noted that water-stop step 4014 not only stops the water droplets in the vapor but also hinders the upward movement of the vapor, further extending the time the vapor remains in the drawer. Furthermore, the water droplets in the vapor include not only the originally carried water droplets but also the condensed water droplets formed during the vapor's movement.

[0089] The water-stopping step 4014 prevents water droplets from moving to the underside of the moisture-permeable membrane 402, thereby reducing the amount of frost on the underside of the moisture-permeable membrane 402 and the lower cover, preventing blockage of the first hollow portion 4011 of the moisture-permeable membrane 402 and the lower cover, and thus ensuring the moisture permeability of the moisture-permeable assembly 40. In some embodiments, the water-stopping step 4014 is arranged parallel to the upper surface of the lower seat 401. This effectively blocks water vapor and water droplets carried by the water vapor.

[0090] In some embodiments, the angle between the condensation guide surface and the vertical plane is greater than or equal to 7°, so that condensation formed between the moisture-permeable membrane 402 and the lower seat 401 flows downward along the condensation guide surface, preventing condensation. In this embodiment, the moisture-permeable assembly 40 is positioned horizontally when in use. Thus, when the angle between the condensation guide surface and the vertical plane is 7°, it is the minimum angle at which water vapor and condensation can flow downward along the condensation guide surface 4013. This prevents water vapor and condensation from condensing and forming frost on the condensation guide surface 4013, thereby reducing the amount of frost on the inner side of the moisture-permeable membrane 402 and preventing blockage of the moisture-permeable membrane 402 and the first hollow portion 4011 of the lower cover, thereby ensuring the moisture permeability of the moisture-permeable assembly 40. When the angle between the condensation water guide surface and the vertical plane is greater than 7°, water vapor and condensation water can flow downward along the condensation water guide surface 4013, avoiding frost on the inner side of the moisture permeable membrane 402 and the upper surface of the lower cover, thereby avoiding blockage of the moisture permeable membrane 402 and the first hollow portion 4011 of the lower cover, thereby ensuring the moisture permeability of the moisture permeable component 40.

[0091] In some embodiments, the angle between the water vapor guide surface 4012 and the vertical plane is less than or equal to 2° to prevent water vapor from condensing on the water vapor guide surface 4012 as it flows along the water vapor guide surface 4012. In this embodiment, the moisture permeable assembly 40 is positioned horizontally during use. Thus, when the angle between the water vapor guide surface 4012 and the vertical plane is 2°, the water vapor guide surface 4012 not only serves as a guide but also prevents water vapor from condensing on the guide surface, thereby eliminating the risk of water vapor forming ice or frost on the water vapor guide surface 4012. When the angle between the water vapor guide surface 4012 and the vertical plane is less than 2°, water vapor is prevented from condensing on the guide surface, thereby eliminating the risk of water vapor forming ice or frost on the water vapor guide surface 4012.

[0092] In some embodiments, the moisture permeable assembly 40 further includes an upper cover 403 having a plurality of second hollow portions 4031. The upper cover 403 is detachably connected to the lower seat 401. The lower surface of the upper cover 403 and the upper surface of the lower seat 401 define a moisture permeable cavity, within which the moisture permeable membrane 402 is disposed. The connection between the upper cover 403 and the lower seat 401 secures the moisture permeable membrane 402 within the moisture permeable cavity. This not only further secures the position of the moisture permeable membrane 402 but also protects the membrane 402 from damage, which could compromise its moisture permeability. Furthermore, when in use, the moisture permeable assembly 400 is positioned horizontally, with the lower seat 401 positioned below the moisture permeable membrane 402 and the upper cover 403 positioned above it. The plurality of second hollow portions 4031 constructed through the upper cover 403 allow the water vapor transmitted from the moisture-permeable membrane 402 to be discharged through the second hollow portions 4031 , that is, the second hollow portions 4031 serve the purpose of discharging water vapor.

[0093] In some embodiments, the second hollow portion 4031 is disposed correspondingly to the first hollow portion 4011, so that water vapor passing through the first hollow portion 4011 passes through the moisture-permeable membrane 402 and is then discharged from the second hollow portion 4031. In some embodiments, the sidewalls of the second hollow portion 4031 are also configured with water vapor guide surfaces 4012, condensate guide surfaces 4013, and water-stopping steps 4014. This helps reduce the formation of frost on the second hollow portion 4031 and the upper side of the moisture-permeable membrane 402 by the water vapor passing through, thereby preventing clogging of the second hollow portion 4031 and the moisture-permeable membrane 402.

[0094] In some embodiments, the upper edge of the lower seat 401 protrudes upward to form a boss 4015. When the lower seat 401 is connected to the upper cover 403, the boss 4015 abuts against the moisture-permeable membrane 402, pressing the moisture-permeable membrane 402 against the lower surface of the upper cover 403. In this embodiment, the upper edge of the lower seat 401 protrudes upward to form a boss 4015. That is, when the moisture-permeable membrane 402 is disposed within the moisture-permeable cavity, the edge of the moisture-permeable membrane 402 overlaps the boss 4015. When the lower seat 401 is connected to the upper cover 403, the boss 4015 presses the moisture-permeable membrane 402 against the lower surface of the upper cover 403, thereby pressing the moisture-permeable membrane 402 against the lower surface of the upper cover 403, strengthening the moisture-permeable membrane 402 and preventing it from moving within the moisture-permeable cavity.

[0095] In some embodiments, the bosses 4015 can be arranged around the circumference of the lower seat 401. This allows the entire edge of the moisture-permeable membrane 402 to be pressed against the lower surface of the upper cover 403. This not only ensures the stability of the moisture-permeable membrane 402, but also ensures its smoothness, preventing wrinkles on the membrane 402 that could affect its moisture permeability.

[0096] In some embodiments, the lower seat 401 is configured with an elastic claw 4016, and the upper cover 403 is configured with a limiting groove 4033. The elastic claw 4016 is engaged with the limiting groove 4033 to enable a detachable connection between the lower seat 401 and the upper cover 403. As shown in Figures 14 and 17, one embodiment provides a lower seat 401 having a curved elastic claw 4016, and a portion of the lower surface edge of the upper cover 403 extending downward to form a limiting plate 4032, which is configured with a limiting groove 4033. The lower seat 401 is assembled with the upper cover 403 from bottom to top, and the limiting plate 4032 is located at the outer edge of the lower seat 401. When the elastic claw 4016 of the lower seat 401 moves upward from the edge of the limiting plate 4032, the elastic claw 4016 is compressed and deformed until the limiting end of the elastic claw 4016 moves into the limiting groove 4033. In this way, the elastic claw 4016 is engaged with the limiting groove 4033 of the upper cover 403, thereby achieving the clamping and fixing of the lower seat 401 and the upper cover 403. When it is necessary to disassemble the lower seat 401 and the upper cover 403, it is only necessary to press the limiting end of the elastic claw 4016 inward to make it disengage from the limiting groove 4033, and then separate the lower seat 401 from the upper cover 403.

[0097] In some embodiments, the lower seat 401 is configured with a slot, and the upper cover 403 is configured with a snap-fitting portion 4034. The snap-fitting portion 4034 is inserted into the slot, so that the upper cover 403 and the lower seat 401 are detachably connected. As shown in Figures 18 and 19, another embodiment provides a lower seat 401 configured with a slot, and the upper cover 403 is configured with a snap-fitting portion 4034. When the upper cover 403 and the lower cover are connected, the snap-fitting portion 4034 of the upper cover 403 is directly inserted into the slot of the lower seat 401 to achieve snap-fit ​​fixation.

[0098] In some embodiments, the locking portion 4034 is disposed on the lower surface of the upper cover 403 and is perpendicular to the upper cover 403 .

[0099] In some embodiments, the engaging portion 4034 includes a guide and protection portion 4035 and two elastic portions. The two elastic portions are located on either side of the guide and protection portion 4035. When the engaging portion 4034 is inserted into the slot, the guide and protection portion 4035 provides guidance, causing the two elastic portions to deform and abut against the sidewalls of the slot, securing the engaging portion 4034 within the slot and preventing it from falling out. In some embodiments, the elastic portion includes a columnar elastic deformation portion 4036 and an elastic force recovery portion 4037 connecting the elastic deformation portion 4036 and the guide and protection portion 4035. The elastic deformation portion 4036 and the guide and protection portion 4035 are both disposed perpendicular to the upper cover 403 and spaced a certain distance apart. The elastic force recovery portion 4037 is bent and located between the elastic deformation portion 4036 and the guide and protection portion 4035.

[0100] The guide and protection portion 4035 overcomes any guiding defects that may occur between the upper cover 403 and the lower seat 401 during installation, while also providing protection after installation. The addition of the elastic force recovery portion 4037 ensures that the elastic deformation portion returns to its pre-deformation state after installation, thereby securing the upper cover 403 and the lower seat 401 and preventing loosening.

[0101] In some embodiments, the width of the second air outlet 102 should satisfy ≥0.5*the width of the moisture permeable component 40 , and the height should satisfy ≥2.5*the thickness of the moisture permeable component 40 .

[0102] For example, the relationship between the air volume of the second air outlet and the humidity and frost amount of the drawer is:

[0103] The maximum amount of frost on the drawer cover is: Q = α * V drawer * ρ fresh meat * X ①

[0104] Where Q is the amount of frost, i.e., the amount of water lost by the food, in grams; α is the safety factor, ranging from 1.1 to 1.2, with a value of 1.2 used in this calculation; V drawer is the drawer volume, in liters; in this experiment, the drawer volume is 20 liters; ρ fresh meat is the density of fresh meat, 975 g / L; X is the water loss; the current drawer's preservation function is a water loss of 0.10%.

[0105] Replace the water lost by food in the drawer through air circulation: Q=V*ρ*(W1-W2)②

[0106] Where Q is the amount of frost, i.e. the amount of water lost by the food, in g; V is the amount of cold air required to replace the excess water, in m 3 ;ρ: -18℃~-25℃ relative humidity 100% air density is 1.41kg / m 3 ; W: -23 ℃ relative humidity 100% air moisture content 0.4715g / kg; W2: -25 ℃ relative humidity 30% air moisture content 0.1158g / kg;

[0107] The freezing capacity of the refrigerator in this experiment is: 6.5kg / 24h, so the time T required for 20L of fresh meat to reach the frozen state is: T = 20*975 / 1000 / 6.5*24*60 = 4320min

[0108] According to ① and ②, the total amount of air required to replace the water loss of fresh meat under full load is: V=α*Vdrawer*ρfreshmeat*X / (ρ*(W1-W2)) V=1.2*20*975*0.001 / (1.41*(0.4715-0.1158))=48m 3

[0109] The air volume of the second air outlet is: F = V*1000 / T = 48*1000 / 4320 = 11L / min

[0110] As shown in Figures 1 to 26, the refrigerator of this embodiment also includes a main fan, the drawer assembly is arranged in the inner tank 10, the first air outlet 101 of the inner tank is located above the drawer assembly, and the air flow blown out by the main fan through the first air outlet 101 forms a main air path above the drawer assembly; the second air outlet 102 of the inner tank corresponds to the drawer assembly, and the air flow blown out by the main fan through the second air outlet 102 is used to form an auxiliary air path in the drawer assembly or to accelerate the air flow rate of the auxiliary air path.

[0111] The top of the drawer assembly has a first ventilation portion 100 and a second ventilation portion 200 arranged opposite to each other; the air flow blown out from the first air outlet or the second air outlet flows into the drawer body 20 through the first ventilation portion 100 and flows out from the second ventilation portion 200, wherein the air flow flowing into the drawer body 20 forms an auxiliary air path on the lower surface of the drawer cover 30, and the auxiliary air path is used to prevent frost on the lower surface of the moisture permeable assembly 40.

[0112] The inner wall of the liner 10 is provided with an air supply duct, which is equipped with a main blower. The airflow blown by the main blower flows through the air supply duct and is blown out from the first and second air outlets into the compartment, thereby providing cooling. It should be noted that the airflow blown out of the air outlets of the liner 10 is the same in terms of temperature and humidity. In this article, the air outlets are named separately for ease of description, namely the first air outlet 101 and the second air outlet 102, depending on their location and the effect they produce.

[0113] As shown in FIG22 , an embodiment of the present disclosure provides a control method for a refrigerator, including:

[0114] S01, when the first air vent and the second air vent are both opened to discharge air, the processor obtains the temperature value in the drawer assembly;

[0115] S02: When the temperature of the drawer assembly is higher than the shutdown temperature of the refrigerator, the processor obtains a humidity value in the drawer assembly and controls the opening and closing of the second air vent according to a ratio of the humidity value of the drawer assembly to a first humidity threshold;

[0116] S03: When the temperature of the drawer assembly is lower than or equal to the shutdown temperature of the refrigerator, the processor controls the main fan to turn off.

[0117] In the embodiment of the present disclosure, air is discharged through the first air outlet and the second air outlet to cool the compartment where the drawer assembly is located; by achieving different conditions, the switch of the second air outlet, that is, the on-off of the auxiliary air path, is controlled, which helps to control the humidity in the drawer assembly and ensure the freshness of the food in the drawer; in addition, when the temperature in the drawer assembly reaches the shutdown temperature, the main fan is controlled to be turned off, which helps to save energy and reduce consumption. It can also avoid excessive frost on the top of the drawer assembly due to too low temperature, which affects the humidity control effect.

[0118] It should be noted that the drawer assembly temperature is higher than the refrigerator's shutdown temperature. This means that the drawer assembly temperature has not yet reached the required compartment temperature for the compressor to shut down. When the drawer assembly temperature is higher than the refrigerator's shutdown temperature, the main fan is turned on, and the first and second air vents are also in the air outlet state. Thus, continuous airflow through the first and second air vents cools the compartment, lowering the temperature inside the compartment and the drawer assembly. At this point, the current humidity value in the drawer assembly is compared with the first humidity threshold, where the first humidity threshold is the preset minimum humidity value to be achieved in the drawer assembly. Based on the comparison result, the second air vent is controlled to open or close, that is, the auxiliary air path is controlled to be on or off, thereby ensuring the required humidity in the drawer assembly.

[0119] When the temperature of the drawer assembly is lower than or equal to the shutdown temperature of the refrigerator, the main fan is controlled to be turned off. In this way, the first air outlet and the second air outlet no longer discharge air, thereby preventing the temperature in the compartment and the drawer assembly from continuing to drop. This is not only not conducive to energy saving and consumption reduction, but also affects the stability of the humidity environment in the drawer assembly based on the temperature.

[0120] In some embodiments, when the temperature value of the drawer assembly is higher than the shutdown temperature of the refrigerator, the humidity value in the drawer assembly is obtained, and the switch of the second air vent is controlled according to the ratio of the humidity value of the drawer assembly to the first humidity threshold, including: when the humidity value of the drawer assembly is lower than or equal to the first humidity threshold, the second air vent is controlled to be closed.

[0121] The first humidity threshold is the preset minimum humidity value to be reached in the drawer assembly; when the humidity value of the drawer assembly is lower than or equal to the first humidity threshold, the second air outlet is controlled to be closed, that is, the auxiliary air path is controlled to be disconnected, and the airflow can only form weak convection in the drawer assembly, which can delay the leakage of water vapor in the drawer assembly to the outside, that is, avoid the humidity in the drawer assembly from decreasing, and ensure the humidity level in the drawer assembly.

[0122] In some embodiments, when the temperature value of the drawer assembly is higher than the shutdown temperature of the refrigerator, the humidity value in the drawer assembly is obtained, and the switch of the second air vent is controlled according to the ratio of the humidity value of the drawer assembly to the first humidity threshold value. It also includes: when the humidity value of the drawer assembly is higher than the first humidity threshold value, the second air vent is maintained open.

[0123] If the humidity value in the drawer assembly exceeds the first humidity threshold, it can be understood that there is room for the humidity in the drawer assembly to be reduced. However, the overall humidity in the drawer assembly is excessive, especially when the humidity value in the drawer assembly is above the refrigerator's shutdown temperature. This excessive humidity in the drawer assembly is detrimental to the freezing and preservation of food in the drawer. In this case, maintaining the second air vent open, i.e., maintaining the auxiliary air duct, can remove moisture from the drawer. This prevents condensation that would affect the moisture permeability of the drawer assembly and accelerates the reduction of humidity in the drawer.

[0124] In some embodiments, a circulating fan is disposed above the drawer assembly and forms a circulating air path above the drawer assembly. When the circulating fan is activated, the circulating fan forms a circulating air path above the drawer assembly, particularly the moisture permeable assembly. This can blow away moisture from the surface of the moisture permeable assembly, preventing the risk of ice forming on the surface of the moisture permeable assembly due to poor moisture removal, thereby affecting the drawer's moisturizing effect. Furthermore, it eliminates the quality risk of excessive humidity inside the drawer, which can cause ice to form on the drawer inner wall and drawer cover.

[0125] As shown in FIG23 , the embodiment of the present disclosure provides another control method for a refrigerator, including:

[0126] S01, when the first air vent and the second air vent are both opened to discharge air, the processor obtains the temperature value in the drawer assembly;

[0127] S02, when the temperature of the drawer assembly is higher than the shutdown temperature of the refrigerator, the processor obtains the humidity value in the drawer assembly and controls the opening and closing of the second air vent according to the ratio of the humidity value of the drawer assembly to the first humidity threshold;

[0128] S03, when the temperature of the drawer assembly is lower than or equal to the shutdown temperature of the refrigerator, the processor controls the main fan to turn off;

[0129] S04, the processor obtains the humidity value in the drawer assembly, and controls the switch of the circulation fan according to the ratio of the humidity value of the drawer assembly to the second humidity threshold.

[0130] It should be noted that the second humidity threshold is the maximum humidity value required in the drawer assembly.

[0131] In the embodiment of the present disclosure, when the main fan is turned off, the switch of the circulation fan is controlled by comparing the humidity value in the drawer assembly with the second humidity threshold, so that when the air is stopped, it can be further determined whether it is necessary to help the drawer assembly to adjust the humidity.

[0132] In some embodiments, the circulation fan is controlled to be turned on or off based on the ratio of the humidity value of the drawer assembly to the second humidity threshold, including: when the humidity value of the drawer assembly is higher than the second humidity threshold, the auxiliary fan is controlled to be turned on to generate a circulation air path to remove the moisture leaking from the drawer assembly. The main fan is turned off, and the first and second air vents stop supplying air. When the humidity value of the drawer assembly is higher than the second humidity threshold, the circulation fan 60 is started. The airflow generated by the circulation fan 60 can suck air or blow air from the moisture permeable assembly 40 of the drawer cover 30, blow away or remove the moisture on the surface of the moisture permeable assembly 40, and exchange it with the cold air in the freezer compartment, thereby preventing the risk of surface ice formation on the surface of the moisture permeable assembly 40 due to poor moisture removal, thereby affecting the moisturizing effect of the drawer, and eliminating the quality risk of ice formation on the inner wall and drawer cover caused by excessive humidity inside the drawer.

[0133] In some embodiments, controlling the circulation fan on and off based on the ratio of the humidity value of the drawer assembly to a second humidity threshold value further includes controlling the auxiliary fan to be turned off when the humidity value of the drawer assembly is lower than or equal to the second humidity threshold value. The main fan is turned off, and the first and second air vents stop supplying air. Controlling the auxiliary fan to be turned off when the humidity value in the drawer assembly is lower than or equal to the second humidity threshold value can prevent a decrease in humidity in the drawer assembly and maintain a balanced and stable humidity environment within the drawer assembly.

[0134] As shown in FIG24 , the embodiment of the present disclosure provides another control method for a refrigerator, including:

[0135] S01, when the first air vent and the second air vent are both opened to discharge air, the processor obtains the temperature value in the drawer assembly;

[0136] S02, when the temperature of the drawer assembly is higher than the shutdown temperature of the refrigerator, the processor obtains the humidity value in the drawer assembly and controls the opening and closing of the second air vent according to the ratio of the humidity value of the drawer assembly to the first humidity threshold;

[0137] S03, when the temperature of the drawer assembly is lower than or equal to the shutdown temperature of the refrigerator, the processor controls the main fan to turn off;

[0138] S04, the processor obtains the humidity value in the drawer assembly, and controls the switching of the circulation fan according to the ratio of the humidity value of the drawer assembly to the second humidity threshold;

[0139] S05, when the auxiliary fan is turned on, the processor obtains a new humidity value in the drawer assembly, and controls the switch of the circulation fan according to the ratio of the new humidity value in the drawer assembly to the second humidity threshold.

[0140] In the disclosed embodiment, when the main fan is off and the auxiliary fan is on, the auxiliary fan is used to assist in regulating the humidity within the drawer assembly, thereby reducing the humidity within the drawer assembly. Thus, after the auxiliary fan is turned on, a new humidity value can be obtained for comparison, and the circulating fan can be turned on and off based on the result, until the circulating fan is turned off, so that the humidity within the drawer assembly meets the required level.

[0141] As shown in FIG25 , the embodiment of the present disclosure provides another control method for a refrigerator, including:

[0142] S01, when the first air vent 101 and the second air vent 102 are both opened to discharge air, the processor obtains the temperature value in the drawer assembly;

[0143] S02, when the temperature of the drawer assembly is higher than the shutdown temperature of the refrigerator, the processor obtains the humidity value in the drawer assembly and controls the opening and closing of the second air vent 102 according to the ratio of the humidity value of the drawer assembly to the first humidity threshold;

[0144] S21, controlling the second air vent 102 on and off includes controlling the second air vent 102 to be closed or maintained on. When the second air vent 102 is controlled to be closed or maintained on, the processor obtains a new temperature value in the drawer assembly, and controls the second air vent 102 on and off and / or the main fan on and off again based on a ratio of the new temperature value in the drawer assembly to the shutdown temperature of the refrigerator.

[0145] S03: When the temperature of the drawer assembly is lower than or equal to the shutdown temperature of the refrigerator, the processor controls the main fan to turn off.

[0146] In the embodiment of the present disclosure, by controlling the second air vent to be closed or maintained open, a new temperature value in the drawer assembly is re-obtained, and the switch of the second air vent and / or the switch of the main fan are controlled again according to the ratio of the new temperature value in the drawer assembly to the shutdown temperature of the refrigerator; this cycle is repeated to keep the humidity and temperature in the drawer assembly within a stable range, thereby avoiding affecting the freezing and preservation effect of the food.

[0147] As shown in FIG26 , an embodiment of the present disclosure provides a refrigerator control device, comprising a processor 1 and a memory 2. In some embodiments, the device may further comprise a communication interface 3 and a bus 4. The processor, communication interface, and memory may communicate with each other via the bus. The communication interface may be used for information transmission. The processor may invoke logic instructions in the memory to execute the refrigerator control method of the above-described embodiment. Furthermore, the logic instructions in the memory may be implemented as software functional units and, when sold or used as a standalone product, may be stored in a computer-readable storage medium. The memory, as a computer-readable storage medium, may be used to store software programs and computer-executable programs, such as the program instructions / modules corresponding to the methods of the present disclosure. The processor executes the program instructions / modules stored in the memory to execute functional applications and process data, thereby implementing the refrigerator control method of the above-described embodiment. The memory may include a program storage area and a data storage area. The program storage area may store an operating system and at least one application required for a function; the data storage area may store data generated based on the use of the terminal device. Furthermore, the memory may include high-speed random access memory and non-volatile memory.

[0148] With reference to Figures 1 to 26, an embodiment of the present disclosure provides a refrigerator, comprising: a housing, and the above-mentioned control device for the refrigerator. The control device for the refrigerator is installed in the housing, wherein the inner tank and the main fan are both arranged in the housing. The installation relationship described here is not limited to placement inside the product, but also includes installation connections with other components of the product, including but not limited to physical connections, electrical connections or signal transmission connections. It can be understood by those skilled in the art that the control device for the refrigerator can be adapted to a feasible refrigerator, thereby realizing other feasible embodiments.

[0149] The present disclosure provides a computer-readable storage medium storing computer-executable instructions configured to execute the refrigerator control method. The computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0150] The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiments of the present disclosure. The aforementioned storage medium may be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program code, or a transient storage medium.

[0151] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. The technicians will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0152] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units can be merely a logical functional division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, and can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. In addition, the functional units in the embodiments of the present disclosure may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0153] The flowcharts and block diagrams in the accompanying drawings show the possible implementation architectures, functions and operations of the systems, methods and computer program products according to the embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, program segment or part of the code, and the module, program segment or part of the code contains one or more executable instructions for implementing the specified logical functions. In some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, or they can sometimes be executed in the opposite order, which can depend on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in an order different from that disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, or they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified function or action, or may be implemented by a combination of dedicated hardware and computer instructions.

[0154] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A refrigerator, comprising: The inner tank is constructed with at least a plurality of air vents; A drawer assembly is arranged in the inner container, the drawer assembly comprises a drawer cover plate and a drawer body which are slidably connected, the drawer cover plate is provided with a moisture permeable assembly, and the top of the drawer assembly is structured with a first ventilation part and a second ventilation part which are arranged oppositely; The air flow blown out from at least one air outlet flows into the drawer body through the first ventilation part and flows out from the second ventilation part, wherein the air flow flowing into the drawer body forms an auxiliary air path on the lower surface of the drawer cover, and the auxiliary air path is used to prevent frost on the lower surface of the moisture permeable component.

2. The refrigerator according to claim 1, wherein: The liner comprises: The first air outlet blows out an air flow which flows through the upper surface of the drawer cover to form a main air path so as to blow away the water vapor transmitted from the moisture permeable component; Wherein, the first air outlet is arranged horizontally and is higher than the drawer cover.

3. The refrigerator according to claim 2, wherein: The liner also includes: The second air outlet is located below the first air outlet, and the second air outlet is used to form an auxiliary air path or speed up the air flow rate of the auxiliary air path.

4. The refrigerator according to claim 3, wherein: When the second air outlet discharges air horizontally, the second air outlet corresponds to the first ventilation part or the second ventilation part of the drawer assembly, so that the blown airflow flows into the drawer body to form an auxiliary air path; or, When the second air vent is vertical and discharges air downward, the second air vent is higher than the first ventilation part or the second ventilation part of the drawer assembly. The second air vent is used to blow away the airflow flowing out of the drawer assembly, increase the pressure difference and speed up the airflow velocity of the auxiliary air path.

5. The refrigerator according to claim 3, wherein: Also includes: The damper assembly is arranged at the second air outlet and is used for adjusting the flow area of ​​the second air outlet.

6. The refrigerator according to claim 5, wherein: The second air outlet is provided with a slide rail, and the air door assembly comprises: A damper sliding piece, slidably connected to the slide rail, for adjusting the flow area of ​​the second air outlet, and a rack portion is configured at the end of the damper sliding piece; A transmission gear meshingly connected with the rack portion; The motor is arranged in the inner tank and is in transmission connection with the transmission gear. The motor drives the transmission gear to rotate, thereby driving the damper sliding piece to move back and forth linearly, thereby adjusting the flow area of ​​the second air outlet.

7. The refrigerator according to claim 3, wherein: Also includes: The circulating fan is located above the breathable component and is started when the first air outlet stops supplying air to form a circulating air path to blow away the water vapor on the surface of the breathable component.

8. The refrigerator according to claim 7, wherein: Also includes: A humidity sensor is provided in the drawer body and is used to detect the humidity in the drawer body; Wherein, the humidity sensor is connected to the damper assembly and / or the circulating fan at the second air outlet, and the damper assembly and / or the circulating fan triggers an action according to the signal transmitted by the humidity sensor to maintain the humidity in the drawer body within a set range.

9. The refrigerator according to claim 3, wherein: The liner also includes: The third air outlet is located below the second air outlet; the third air outlet corresponds to the middle or lower part of the drawer body to quickly cool the drawer.

10. The refrigerator according to any one of claims 1 to 9, wherein: The first ventilation portion is formed by the drawer cover, the top of the drawer body, or between the drawer cover and the drawer body; and / or, The second ventilation portion is formed by the drawer cover, the top of the drawer body, or between the drawer cover and the drawer body.

11. A control method for a refrigerator, comprising the refrigerator according to any one of claims 1 to 10; wherein: The refrigerator further comprises a main fan, a first air port of the inner tank is located above the drawer assembly, and the airflow blown out by the main fan through the first air port forms a main air path above the drawer assembly; a second air port of the inner tank corresponds to the drawer assembly, and the airflow blown out by the main fan through the second air port is used to form an auxiliary air path in the drawer assembly or to speed up the airflow velocity of the auxiliary air path; The control method comprises: When both the first air vent and the second air vent are opened to discharge air, obtaining a temperature value in the drawer assembly; When the temperature value of the drawer assembly is higher than the shutdown temperature of the refrigerator, the humidity value in the drawer assembly is obtained, and the switch of the second air outlet is controlled according to the ratio of the humidity value of the drawer assembly to the first humidity threshold value; When the temperature value of the drawer assembly is lower than or equal to the shutdown temperature of the refrigerator, the main fan is controlled to be turned off.

12. The control method according to claim 11, wherein: When the temperature value of the drawer assembly is higher than the shutdown temperature of the refrigerator, the humidity value in the drawer assembly is obtained, and according to the ratio of the humidity value of the drawer assembly to the first humidity threshold, the switch of the second air outlet is controlled, including: When the humidity value of the drawer assembly is lower than or equal to the first humidity threshold, the second air vent is controlled to be closed.

13. The control method according to claim 12, wherein: When the temperature value of the drawer assembly is higher than the shutdown temperature of the refrigerator, the humidity value in the drawer assembly is obtained, and the switch of the second air outlet is controlled according to the ratio of the humidity value of the drawer assembly to the first humidity threshold value, and further includes: When the humidity value of the drawer assembly is higher than the first humidity threshold, the second air vent is maintained open.

14. The control method according to claim 11, wherein: The circulating fan is arranged above the drawer assembly, and a circulating air path is formed above the drawer assembly; When the temperature value of the drawer assembly is lower than or equal to the shutdown temperature of the refrigerator, controlling the main fan to be turned off includes: The humidity value in the drawer assembly is obtained, and the switch of the circulation fan is controlled according to the ratio of the humidity value of the drawer assembly to the second humidity threshold value.

15. The control method according to claim 14, wherein: Controlling the switch of the circulation fan according to the ratio of the humidity value of the drawer assembly to the second humidity threshold value includes: When the humidity value of the drawer assembly is higher than the second humidity threshold, the auxiliary fan is controlled to turn on to generate a circulating air path to remove the water vapor leaking from the drawer assembly.

16. The control method according to claim 14, wherein: According to the ratio of the humidity value of the drawer assembly to the second humidity threshold, the switch of the circulation fan is controlled, and further comprising: When the humidity value of the drawer assembly is lower than or equal to the second humidity threshold, the auxiliary fan is controlled to be turned off.

17. The control method according to claim 15, wherein: When the auxiliary fan is turned on, a new humidity value in the drawer assembly is obtained, and the switch of the circulation fan is controlled according to the ratio of the new humidity value in the drawer assembly to the second humidity threshold.

18. The control method according to any one of claims 11 to 17, wherein: Controlling the switch of the second air outlet includes controlling the second air outlet to close or remain open; While controlling the second air vent to be closed or maintained open, a new temperature value in the drawer assembly is obtained, and based on the ratio of the new temperature value in the drawer assembly to the shutdown temperature of the refrigerator, the switch of the second air vent and / or the switch of the main fan are controlled again.

19. A control device for a refrigerator, comprising a processor and a memory storing program instructions, wherein the processor is configured to execute the control method for a refrigerator according to any one of claims 11 to 18 when running the program instructions.

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