Refrigerator and control method for preventing condensation of refrigerator

Abstract

The invention provides a refrigerator and a control method for preventing condensation of the refrigerator. The refrigerator comprises a refrigerator body, an air supply pipeline, a heating piece and a control circuit, a refrigeration chamber is formed in the refrigerator body, the refrigerator body comprises a shell and an inner container, the shell is provided with a first shell wall and a second shell wall, and the inner container is provided with a first inner container wall and a second inner container wall; the air supply pipeline is located between the shell and the inner container, the air supply pipeline comprises a main pipeline and an air outlet pipeline which are communicated, the air outlet pipeline is provided with an air inlet section communicated with the main pipeline and an air outlet section communicated with the refrigeration chamber, and the area, corresponding to the air inlet section, of the second inner container wall forms an easy-condensation area; the heating piece is embedded in the easily-condensed area of the second inner container wall and located between the air inlet section and the second inner container wall and / or located on the surface, away from the second shell wall, of the easily-condensed area of the second inner container wall; and the control circuit is electrically connected with the heating piece, and controls the heating piece to be started, maintain the starting state or the closing state or maintain the closing state based on the temperature of the refrigeration chamber, the humidity of the refrigeration chamber and the temperature of the easy-to-condense area.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a refrigerator and a method for controlling the anti-condensation of the refrigerator. Background Art

[0002] When high-temperature and high-humidity gas encounters a low-temperature object, it will condense into liquid on its surface when the dew point temperature reaches below the ambient temperature, resulting in condensation. The air duct of an existing air-cooled refrigerator is formed by a plastic cover and an insulation layer. The different outer diameters of the air duct lead to inconsistent thickness of the insulation layer, and the probability of condensation is high in areas with thin insulation layer. Summary of the invention

[0003] The present application provides a refrigerator and a control method for preventing condensation in the refrigerator, which can reduce the probability of condensation occurring in areas of the refrigerator where the thickness of the insulation layer is relatively thin.

[0004] The present application provides a refrigerator, which includes a box body, an air supply duct, a heating element and a control circuit. The box body is formed with a refrigeration chamber, and the box body includes a shell and an inner liner. The shell body has a first shell wall and a second shell wall, and the inner liner has a first inner liner wall and a second inner liner wall. The first shell wall and the first inner liner wall form a first side wall, and the second shell wall and the second inner liner wall form a second side wall. The first side wall and the second side wall are connected; the air supply duct is located between the shell body and the inner liner, and the air supply duct includes a main duct and an air outlet duct that are connected, and the main duct is located at the first side wall or the first side wall and the second side wall. The air outlet duct is located at the connection of the second inner liner wall with the main duct and the air outlet duct is provided at the second side wall, the air outlet duct has an air inlet section connected to the main duct and an air outlet section connected to the refrigeration compartment, and the area of ​​the second inner liner wall corresponding to the air inlet section forms an easy condensation area; the heating element is buried in the easy condensation area of ​​the second inner liner wall, located between the air inlet section and the second inner liner wall and / or located on the surface of the easy condensation area of ​​the second inner liner wall away from the second shell wall; the control circuit is electrically connected to the heating element, and the control circuit is used to control the heating element to be turned on, maintained in an on state, turned off or maintained in an off state based on the environmental information of the refrigeration compartment and the temperature of the easy condensation area.

[0005] The refrigerator also includes an insulation layer, which is located between the shell and the inner tank; wherein the width of the air inlet section along the first direction is greater than the width of the air outlet section along the first direction, and the thickness of the insulation layer between the air inlet section and the second inner tank wall is less than the thickness of the insulation layer between the air outlet section and the second inner tank wall, and the first direction is the direction from the second shell wall toward the second inner tank wall.

[0006] The heating element is buried in the insulation layer corresponding to the easy condensation area, between the air inlet section and the insulation layer corresponding to the easy condensation area, and / or between the insulation layer corresponding to the easy condensation area and the second inner tank wall.

[0007] Among them, the air inlet section includes an air inlet area and a guide area, the guide area is connected between the air inlet area and the air outlet section, the guide area has a first wall surface close to the second inner tank wall and a second wall surface close to the second shell body, and the distance between the first wall surface and the second wall surface in the first direction gradually decreases along the direction from the air inlet section toward the air outlet section.

[0008] The second inner tank wall is provided with an air supply port, the air outlet section of the air outlet duct has an air outlet, the air outlet duct is connected to the refrigeration compartment through the air outlet and the air supply port, and the air supply port is located on the side of the heating element away from the first side wall.

[0009] The refrigerator further comprises a fabric cover, which is arranged to cover the air outlet, and the fabric cover comprises an air supply wall, which comprises at least one of fabric and non-woven fabric.

[0010] The air supply wall surface has air supply holes, and the air supply holes include through holes arranged on the air supply wall surface and / or fiber gaps on the air supply wall surface.

[0011] The refrigerator also includes a detection device, which is electrically connected to the control circuit and is used to obtain the temperature of the area prone to condensation; an installation portion is provided at one end of the fabric cover plate close to the area prone to condensation, and the detection device is located at the installation portion, which includes a groove structure, a hook structure, a sticky structure or a magnetic structure.

[0012] The control circuit controls the heating element to be turned on, maintained in an on state, turned off or maintained in an off state based on the temperature of the refrigeration compartment, the humidity of the refrigeration compartment and the temperature of the easy condensation area, including the control circuit calculating the dew point temperature of the refrigeration compartment based on the temperature of the refrigeration compartment and the humidity of the refrigeration compartment, in response to the temperature of the easy condensation area being less than or equal to the dew point temperature, the control circuit controls the heating element to be turned on or maintained in an on state, and in response to the temperature of the easy condensation area being greater than the dew point temperature, the control circuit controls the heating element to be turned off or maintained in an off state.

[0013] The present application provides a control method for preventing condensation in a refrigerator, including the above-mentioned refrigerator. The control method includes obtaining a refrigeration compartment temperature and a refrigeration compartment humidity of a refrigeration compartment, determining a dew point temperature of a condensation-prone area based on the refrigeration compartment temperature and the refrigeration compartment humidity; obtaining a temperature of the condensation-prone area; and controlling a heating element to be turned on, maintained in an on state, turned off, or maintained in an off state based on the dew point temperature and the temperature of the condensation-prone area.

[0014] Among them, based on the dew point temperature and the temperature of the area prone to condensation, the heating element is controlled to be turned on, maintained in an on state, turned off or maintained in an off state, including controlling the heating element to be turned on or maintained in an on state in response to the temperature of the area prone to condensation being less than or equal to the dew point temperature; controlling the heating element to be turned off or maintained in an off state in response to the temperature of the area prone to condensation being greater than the dew point temperature.

[0015] The beneficial effects of the present application are as follows: the refrigerator of the present application comprises a box body, an air supply duct, a heating element and a control circuit, wherein the box body comprises a shell and an inner liner, the inner liner faces the refrigeration compartment of the refrigerator, the shell body comprises a first shell wall and a second shell wall, the inner liner comprises a first inner liner wall and a second inner liner wall, the first shell wall and the first inner liner wall form a first side wall, the second shell wall and the second inner liner wall form a second side wall, and the first side wall and the second side wall are connected; the air supply duct is located between the shell body and the inner liner, the air supply duct comprises a main duct and an air outlet duct which are connected, the main duct is located at the first side wall or at the first side wall and the second side wall The air outlet duct is located at the connection between the main duct and the refrigeration compartment of the refrigerator, the air outlet duct has an air inlet section connected to the main duct and an air outlet section connected to the refrigeration compartment of the refrigerator, and the area of ​​the second inner tank wall corresponding to the air inlet section forms an easy condensation area; the heating element is buried in the easy condensation area of ​​the second inner tank wall, located between the air inlet section and the second inner tank wall and / or located on the surface of the easy condensation area of ​​the second inner tank wall away from the second shell wall; the control circuit is electrically connected to the heating element, and the control circuit is used to control the heating element to be turned on, maintained in an on state, turned off or maintained in an off state based on the temperature of the refrigeration compartment, the humidity of the refrigeration compartment and the temperature of the easy condensation area. Through the above-mentioned method, the present application arranges a heating element to be buried in the easy-condensation area of ​​the second inner tank wall, located between the air inlet section and the second inner tank wall and / or located in the easy-condensation area of ​​the second inner tank wall away from the surface of the second shell wall, and controls the opening, maintaining the opening state, closing or maintaining the closing state of the heating element based on the temperature of the refrigeration compartment, the humidity of the refrigeration compartment and the temperature of the easy-condensation area through a control circuit, that is, when the temperature of the easy-condensation area is less than or equal to the dew point temperature, the heating element can be controlled to generate heat, so that the temperature of the easy-condensation area increases, thereby reducing the probability of condensation generating in the easy-condensation area; further, when the temperature of the easy-condensation area is higher than the dew point temperature, the heating element can be controlled to stop working, thereby reducing the energy consumption of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a refrigerator provided by the present application;

[0018] Figure 2 yes Figure 1 A schematic diagram of a partial structure of a refrigerator in the embodiment;

[0019] Figure 3 yes Figure 1 An exploded schematic diagram of a refrigerator structure in the embodiment;

[0020] Figure 4 It is a structural schematic diagram of an embodiment of a control circuit and a heating element provided by the present application;

[0021] Figure 5 It is a structural schematic diagram of an embodiment of an air supply duct provided by the present application;

[0022] Figure 6 It is a schematic diagram of the top view of the structure of an embodiment of the air supply duct provided by the present application;

[0023] Figure 7 is a schematic diagram of a top view of the structure of another embodiment of the air supply duct provided by the present application;

[0024] Figure 8 It is a structural schematic diagram of an embodiment of a fabric cover provided by the present application;

[0025] Fig. 9 It is a flow chart of an embodiment of a refrigerator anti-condensation control method provided by the present application;

[0026] Fig.10 It is a flowchart of an embodiment of step S130 provided by this application;

[0027] Fig.11 It is a flow chart of another embodiment of the refrigerator anti-condensation control method provided in the present application. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0031] See also Figures 1 to 3 , Figure 1 is a structural schematic diagram of an embodiment of a refrigerator provided by the present application, Figure 2 yes Figure 1 Schematic diagram of the partial structure of the refrigerator in the embodiment, Figure 3 yes Figure 1 An exploded schematic diagram of a refrigerator structure in the embodiment, Figure 4 This is a schematic diagram of the structure of an embodiment of a control circuit and a heating element provided by the present application. Figures 1 to 4 As shown, the refrigerator 10 includes a box body 100, an air supply duct 200, a heating element 300 and a control circuit 610. The box body 100 includes a shell 110 and an inner liner 120, and the inner liner 120 faces the refrigeration compartment (not marked in the figure) of the refrigerator 10. The shell 110 has a first shell wall 111 and a second shell wall 112, and the inner liner 120 has a first inner liner wall 121 and a second inner liner wall 122. The first shell wall 111 and the first inner liner wall 121 form a first side wall 140 of the box body 100, and the second shell wall 112 and the second inner liner wall 122 form a second side wall 130 of the box body 100, and the first side wall 140 and the second side wall 130 are connected. It can be understood that the inner liner 120 also includes other inner liner walls, and the other inner liner walls and the first inner liner wall 121 and the second inner liner wall 122 form the refrigeration compartment of the refrigerator 10.

[0032] The air supply duct 200 is located between the housing 110 and the inner liner 120, wherein the air supply duct 200 includes a main duct 220 and an air outlet duct 210 that are connected to each other. The main duct 220 is located at the first side wall 140 or at the connection between the first side wall 140 and the second side wall 130, see Figure 3The main duct 220 includes a first section 221 and a second section 222 which are connected to each other. The first section 221 is located at the first side wall 140, and the second section 222 is located at the connection between the first side wall 140 and the second side wall 130. The air outlet duct 210 is located at the second side wall 130. The air outlet duct 210 has an air inlet section 211 connected to the main duct 220 and an air outlet section 212 connected to the refrigeration compartment of the refrigerator 10. The area of ​​the second inner liner wall 122 corresponding to the air inlet section 211 forms an easy condensation area 1221. Compared with other areas of the inner liner 120 wall, the easy condensation area 1221 has a lower temperature, which makes it easier for the easy condensation area 1221 to be lower than the dew point temperature and produce condensation.

[0033] The heating element 300 is embedded in the easy condensation area 1221 of the second inner liner wall 122, located between the air inlet section 211 and the second inner liner wall 122, and / or located on the surface of the easy condensation area 1221 of the second inner liner wall 122 away from the second shell wall 112. It can be understood that in the case where one heating element 300 is provided, the heating element 300 can be located between the air inlet section 211 and the second inner liner wall 122, or located on the surface of the easy condensation area 1221 of the second inner liner wall 122 away from the second shell wall 112. In the case where at least two heating elements 300 are provided, the two heating elements 300 can be located between the air inlet section 211 and the second inner liner wall 122, and located on the surface of the easy condensation area 1221 of the second inner liner wall 122 away from the second shell wall 112. The heating element 300 can generate heat when working, which can increase the temperature of the easy condensation area 1221. The heating element 300 may be a heating wire, or the heating element 300 may be a heating material coating or the like.

[0034] The control circuit 610 is arranged on the circuit board 600 of the refrigerator, and the control circuit 610 is electrically connected to the heating element 300. The control circuit 610 is used to control the opening, maintaining the opening state, closing or maintaining the closing state of the heating element 300 based on the temperature of the refrigeration compartment, the humidity of the refrigeration compartment and the temperature of the easy condensation area 1221. The control circuit 610 mainly includes a controller, and the controller can be an integrated circuit chip with signal processing capabilities. The controller can also be a general controller, a dedicated integrated circuit, a field programmable gate array (FPGA) or other programmable logic devices. The general controller can also be a microprocessor or the controller can also be any conventional controller, etc.

[0035] It can be understood that, compared with other areas of the inner tank 120, the second inner tank wall 122 corresponds to the air inlet section 211 of the air supply duct, i.e., the easy condensation area 1221, which has a greater cooling capacity. In order to prevent the easy condensation area 1221 from being too cold and causing condensation, the present application provides a heating element 300 buried in the easy condensation area 1221 of the second inner tank wall 122, located between the air inlet section 211 and the second inner tank wall 122, and / or located on the surface of the easy condensation area 1221 of the second inner tank wall 122 away from the second shell wall 112, and the heating element 300 is provided based on the control circuit 610. The heating element 300 is controlled to be turned on, maintained in an on state, turned off or maintained in an off state according to the temperature of the refrigeration compartment, the humidity of the refrigeration compartment and the temperature of the easy condensation area 1221, that is, when the temperature of the easy condensation area 1221 is equal to or lower than the dew point temperature, the heating element 300 is controlled to generate heat, so that the temperature of the easy condensation area 1221 is increased, thereby reducing the probability of condensation generating in the easy condensation area 1221; further, when the temperature of the easy condensation area 1221 is higher than the dew point temperature, the heating element 300 can be controlled to stop working, thereby reducing the energy consumption of the refrigerator 10.

[0036] The refrigerator 10 of the present application includes a box body 100, an air supply duct, a heating element 300 and a control circuit 610, wherein the box body 100 is formed with a refrigeration chamber, and the box body 100 includes a shell 110 and an inner liner 120, the shell 110 has a first shell wall 111 and a second shell wall 112, the inner liner 120 has a first inner liner wall 121 and a second inner liner wall 122, the first shell wall 111 and the first inner liner wall 121 form a first side wall 140, the second shell wall 112 and the second inner liner wall 122 form a second side wall 130, and the first side wall 140 and the second side wall 130 are connected; the air supply duct is located between the shell body 110 and the inner liner 120, and the air supply duct 200 includes a main duct 220 and an air outlet duct 210 that are connected, and the main duct 220 is located at the first side wall 140 or the first side wall 140 and the second side wall 130. At the connection of the side wall 130, the air outlet duct 210 is located on the second side wall 130, the air outlet duct 210 has an air inlet section 211 connected to the main duct 220 and an air outlet section 212 connected to the refrigeration compartment of the refrigerator 10, and the area of ​​the second inner tank wall 122 corresponding to the air inlet section 211 forms an easy condensation area 1221; the heating element 300 is buried in the easy condensation area 1221 of the second inner tank wall 122, located between the air inlet section 211 and the second inner tank wall 122 and / or located on the surface of the easy condensation area 1221 of the second inner tank wall 122 away from the second shell wall 112; the control circuit 610 is electrically connected to the heating element 300, and the control circuit 610 is used to control the opening, maintaining the opening state, closing or maintaining the closing state of the heating element 300 based on the temperature of the refrigeration compartment, the humidity of the refrigeration compartment and the temperature of the easy condensation area 1221. In the above manner, the present application sets the heating element 300 to be buried in the easy condensation area 1221 of the second inner tank wall 122, located between the air inlet section 211 and the second inner tank wall 122 and / or located in the easy condensation area 1221 of the second inner tank wall 122 away from the surface of the second shell wall 112, and controls the opening, maintaining the opening state, closing or maintaining the closing state of the heating element 300 based on the temperature of the refrigeration compartment, the humidity of the refrigeration compartment and the temperature of the easy condensation area 1221 through the control circuit 610, that is, when the temperature of the easy condensation area 1221 is less than or equal to the dew point temperature, the heating element 300 can be controlled to generate heat, so that the temperature of the easy condensation area 1221 increases, thereby reducing the probability of condensation generating in the easy condensation area 1221; further, when the temperature of the easy condensation area 1221 is higher than the dew point temperature, the heating element 300 can be controlled to stop working, thereby reducing the energy consumption of the refrigerator 10.

[0037] Specifically, the control circuit 610 calculates the dew point temperature of the refrigeration compartment based on the temperature of the refrigeration compartment and the humidity of the refrigeration compartment, and compares the dew point temperature with the temperature of the easy condensation zone. In response to the temperature of the easy condensation zone being less than or equal to the dew point temperature, the control circuit 610 controls the heating element 300 to turn on to increase the temperature of the easy condensation zone, or maintains the turned-on state to continue to increase the temperature of the easy condensation zone. In response to the temperature of the easy condensation zone being greater than the dew point temperature, the control circuit 610 also controls the heating element 300 to turn off or maintain the turned-off state to prevent the heating element 300 from continuously heating and affecting the temperature of the refrigeration compartment.

[0038] Optionally, the refrigerator 10 further includes a heat preservation layer (not marked in the figure), which is located between the shell 110 and the liner 120. The width of the air inlet section 211 along the first direction is greater than the width of the air outlet section 212 along the first direction, and the thickness of the heat preservation layer between the air inlet section 211 and the second liner wall 122 is less than the thickness of the heat preservation layer between the air outlet section 212 and the second liner wall 122. The first direction is the direction from the second shell wall 112 to the second liner wall 122. It can be understood that since the width of the air inlet section 211 along the first direction is greater than the width of the air outlet section 212 along the first direction, the distance between the side of the air inlet section 211 close to the second inner liner wall 122 and the second inner liner wall 122 is short, resulting in the thickness of the insulation layer between the air inlet section 211 and the second inner liner wall 122 being less than the thickness of the insulation layer between the air outlet section 212 and the second inner liner wall 122, that is, a condensation-prone area 1221 is formed in the area where the insulation layer is thin between the second inner liner wall 122 and the air inlet section 211.

[0039] The refrigerator 10 of the present embodiment further includes a heat preservation layer, which is located between the shell 110 and the inner liner 120. In the above manner, the refrigerator 10 of the present embodiment reduces the loss rate of the coldness of the refrigeration compartment by providing the heat preservation layer, thereby reducing the energy consumption of the refrigerator 10. Wherein, the width of the air inlet section 211 along the first direction is greater than the width of the air outlet section 212 along the first direction, and the heat preservation layer between the air inlet section 211 and the second inner liner wall 122 is thinner than the heat preservation layer between the air outlet section 212 and the second inner liner wall 122. Then, while increasing the cold air circulation speed of the air outlet duct 210, by providing the heating element 300 in the area with the thin heat preservation layer between the air inlet section 211 and the second inner liner wall 122, the balance between the cold air circulation speed at the air inlet section 211 and the heat preservation layer is achieved.

[0040] Optionally, the heating element 300 is buried in the insulation layer corresponding to the easy condensation area 1221, between the air inlet section 211 and the insulation layer corresponding to the easy condensation area 1221, and / or between the insulation layer corresponding to the easy condensation area 1221 and the second inner liner wall 122. It can be understood that an insulation layer is also provided between the side of the air inlet section 211 close to the second inner liner wall 122 and the second inner liner wall 122, and the heating element 300 is buried in the insulation layer corresponding to the easy condensation area 1221, wherein the heating element 300 can be arranged close to the air inlet section 211, that is, the heating element 300 can be located between the air inlet section 211 and the insulation layer corresponding to the easy condensation area 1221. Alternatively, the heating element 300 can be arranged close to the second inner liner wall 122, that is, the heating element 300 can be located between the insulation layer corresponding to the easy condensation area 1221 and the second inner liner wall 122. When at least two heating elements 300 are provided, the two heating elements 300 are respectively located between the air inlet section 211 and the insulation layer corresponding to the easy condensation area 1221 , and between the insulation layer corresponding to the easy condensation area 1221 and the second inner liner wall 122 .

[0041] Optionally, the projection of the air outlet section 212 on the first shell wall 111 is located within the projection of the air inlet section 211 on the first shell wall 111. It can be understood that the width of the air inlet section 211 along the first direction is greater than the width of the air outlet section 212 along the first direction, and the projection of the air outlet section 212 on the first shell wall 111 is located within the projection of the air inlet section 211 on the first shell wall 111, then the air outlet section 212 and the air inlet section 211 are in a contracted state, so that the cold air of the air outlet section 212 enters the air inlet section 211, and the circulation rate of the cold air in the air outlet duct 210 is accelerated.

[0042] Specifically, see Figure 5 , Figure 5 : is a schematic diagram of the structure of an embodiment of the air supply duct provided by the present application, such as Figure 5 As shown, the air inlet section 211 includes an air inlet area 2112 and a guide area 2111, the guide area 2111 is connected between the air inlet area 2112 and the air outlet section 212, the guide area 2111 has a first wall surface 2111b close to the second inner tank wall 122 and a second wall surface 2111a close to the second shell wall 112, and the distance between the first wall surface 2111b and the second wall surface 2111a in the first direction gradually decreases along the direction from the air inlet section 211 to the air outlet section 212. Figure 6 , Figure 6 2 is a schematic diagram of a top view of an embodiment of the air supply duct provided by the present application, wherein the second wall surface 2111a is perpendicular to the first direction, and the angle between the first wall surface 2111b and the first direction is less than 90 degrees. Figure 7 , Figure 7 FIG. 1 is a schematic diagram of a top view of another embodiment of the air supply duct provided by the present application. Figure 7As shown, the angle between the second wall 2111a and the first direction is greater than 90 degrees, and the angle between the first wall 2111b and the first direction is less than 90 degrees. It can be understood that the distance between the first wall 2111b and the second wall 2111a in the first direction gradually decreases along the direction from the air inlet section 211 to the air outlet section 212, so at most only one wall between the first wall 2111b and the second wall 2111a is perpendicular to the first direction.

[0043] The air inlet section 211 of the present embodiment includes an air inlet area 2112 and a guide area 2111, the guide area 2111 is connected between the air inlet area 2112 and the air outlet section 212, the guide area 2111 has a first wall surface 2111b close to the second inner tank wall 122 and a second wall surface 2111a close to the second shell wall 112, the distance between the first wall surface 2111b and the second wall surface 2111a in the first direction gradually decreases along the direction from the air inlet section 211 toward the air outlet section 212, that is, the guide area 2111 of the present embodiment is arranged by setting at least one wall surface not perpendicular to the first direction, so that the guide area 2111 is arranged to be contracted along the direction from the air inlet section 211 toward the air outlet section 212, wherein the wall surface not perpendicular to the first direction has a better guiding effect than the wall surface perpendicular to the first direction, so that the air inlet section 211 of the present embodiment can increase the circulation speed of the cold air in the air outlet duct 210.

[0044] Optionally, the top wall surface of the air inlet section 211 parallel to the first direction (not marked in the figure) is higher than the top wall surface of the air outlet section 212 parallel to the first direction, wherein the top wall surface located in the guide area 2111 is inclined in the direction from the air inlet section 211 toward the air outlet section 212. It can be understood that when the top wall surface of the air inlet section 211 is higher than the top wall surface 2122 of the air outlet section, an inclined wall surface is connected between the top wall surface of the air inlet section 211 and the top wall surface of the air outlet section 212, that is, the top wall surface 2111c of the guide area is inclined in the direction from the air inlet section 211 toward the air outlet section 212.

[0045] In this embodiment, the top wall surface of the air inlet section 211 parallel to the first direction is higher than the top wall surface of the air outlet section 212 parallel to the first direction, and the top wall surface located in the guide area is inclined along the direction from the air inlet section toward the air outlet section, that is, the top wall surface 2111c of the guide area is an inclined wall surface, and the guide area 2111 further increases the inclined wall surface to increase the speed of the cold air in the air inlet section 211 entering the air outlet section 212, so as to further accelerate the circulation speed of the cold air in the air outlet duct 210.

[0046] Optionally, the second inner wall 122 is provided with an air outlet 1222 , the air outlet section 212 of the air outlet duct 210 has an air outlet 2121 , the air outlet duct 210 is connected to the refrigeration chamber through the air outlet 2121 and the air outlet 1222 , and the air outlet 1222 is located on the side of the heating element 300 away from the first side wall 140 .

[0047] The air supply port 1222 of the present embodiment is located on the side of the heating element 300 away from the first side wall 140, that is, the second inner tank wall 122 is provided with the air supply port 1222 at a position close to the air inlet section 211, and the air supply port 1222 is connected with the air outlet port 2121 of the air outlet section 212, so that the cold air from the air inlet section 211 can be immediately delivered to the refrigeration compartment of the refrigerator 10 when entering the air outlet section 212, thereby reducing the cold air loss between the air supply ducts, thereby improving the refrigeration capacity of the refrigerator 10.

[0048] Optionally, the refrigerator 10 further includes a fabric cover 400, and the fabric cover 400 is disposed on the air outlet 1222. Figure 8 , Figure 8 : is a structural schematic diagram of an embodiment of a fabric cover provided by the present application, such as Figure 8 As shown, the fabric cover 400 includes an air supply wall 410, and a plurality of air supply holes 411 are arranged on the air supply wall 410. It can be understood that the fabric is an object composed of small and soft long objects connected by crossing, entanglement, etc., and the characteristics of the fabric cover 400 determine that there are a large number of air supply holes 411 on the air supply wall 410, and the cold air enters the refrigeration room through the air supply holes 411 on the air supply wall 410. Specifically, the air supply wall 410 can be any one of fabrics and non-woven fabrics made of natural plant fibers, industrial synthetic fibers and / or metal wires. Among them, the air supply holes 411 on the air supply wall 410 can be gaps between fibers, or can be hole structures formed on the cloth by stamping, cutting, hot melting, laser etching, etc.

[0049] The refrigerator 10 of the present embodiment also includes a fabric cover 400, which is arranged to cover the air supply port 1222, wherein the fabric cover 400 includes an air supply wall 410 provided with a plurality of air supply holes 411. Then, a fabric cover 400 having a large number of air supply holes 411 is arranged at the air supply port 1222, so as to reduce the amount of indoor impurities in the refrigeration room entering the air outlet duct 210 through the air supply port 1222, thereby avoiding blockage of the air outlet duct 210.

[0050] Optionally, the refrigerator 10 further includes a detection device 500, which is electrically connected to the control circuit 610 and is used to obtain the temperature of the easy condensation area 1221. The detection device 500 may be a temperature sensor, or the detection device 500 may be an infrared sensor. The fabric cover further includes a mounting portion 420, which is located at one end of the air supply wall 410 and is used to mount the detection device 500. When the fabric cover 400 is covered on the air supply port 1222, a mounting portion 420 is provided at one end close to the easy condensation area 1221, and the detection device 500 is located at the mounting portion 420. The mounting portion 420 includes a groove structure, a hook structure, a viscous structure or a magnetic structure.

[0051] Optionally, a plurality of air outlet ducts 210 connected to the main duct 220 are arranged on the second side wall 130, and the second inner tank wall 122 is provided with the same number of easy condensation areas 1221 as the set air outlet ducts 210, and a heating element 300 is arranged in each easy condensation area 1221, and the control circuit is respectively connected to each heating circuit, and the control circuit can control the heating element 300 to work individually.

[0052] Optionally, the shell 110 further includes a third shell 110 wall disposed opposite to the second shell wall 112, and the liner 120 further includes a third liner 120 wall disposed opposite to the second liner wall 122, and the third shell 110 wall and the third liner 120 wall form a third side wall of the box body 100. The air supply duct includes at least two outlet ducts 210 disposed in communication with the main duct 220, one of which is disposed on the second side wall 130, and the other is disposed on the third side wall. Then, the liner 120 wall forms an easy condensation area 1221 corresponding to the air inlet section 211 of the outlet duct 210, and for the easy condensation area 1221 formed on different liner 120 walls, a heating element 300 is disposed in each easy condensation area 1221, and each heating element 300 is electrically connected to the control circuit respectively, so that the control circuit can individually control the heating element 300 corresponding to each easy condensation area 1221 to work independently.

[0053] The present application provides a control method for preventing condensation in a refrigerator. Fig. 9 , Fig. 9 : is a flow chart of an embodiment of a refrigerator anti-condensation control method provided by the present application. Fig. 9 As shown, the control method includes the following steps:

[0054] Step S110: obtaining the refrigeration compartment temperature and the refrigeration compartment humidity of the refrigeration compartment, and determining the dew point temperature of the condensation-prone area based on the refrigeration compartment temperature and the refrigeration compartment humidity.

[0055] The control circuit acquires the refrigeration compartment temperature and the refrigeration compartment humidity of the refrigeration compartment. When the control circuit acquires the refrigeration compartment temperature, it can acquire the refrigeration compartment temperature by controlling the temperature sensor disposed in the refrigeration compartment, or send an instruction to acquire the refrigeration compartment temperature to a temperature detection device used to detect the refrigeration compartment temperature. After receiving the instruction to acquire the refrigeration compartment temperature, the temperature detection device sends the acquired refrigeration compartment temperature to the control circuit. Similarly, when the control circuit acquires the refrigeration compartment humidity, it can acquire the refrigeration compartment humidity by controlling the humidity sensor disposed in the refrigeration compartment, or send an instruction to acquire the refrigeration compartment humidity to a humidity detection device used to detect the refrigeration compartment humidity. After receiving the instruction to acquire the refrigeration compartment humidity, the humidity detection device sends the acquired refrigeration compartment humidity to the control circuit. The control circuit determines the dew point temperature of the easy condensation zone based on the refrigeration compartment temperature and the refrigeration compartment humidity.

[0056] Step S120: obtaining the temperature of the area prone to condensation.

[0057] The control circuit obtains the temperature of the easy condensation area. Since the temperature of the easy condensation area on the second inner tank wall is lower than the temperature of other areas of the inner tank, and the temperature of the refrigeration compartment can be regarded as the temperature of other areas of the inner tank, the temperature of the easy condensation area refers to the surface temperature of the second inner tank wall area corresponding to the easy condensation area close to the refrigeration compartment. When the control circuit obtains the temperature of the easy condensation area, it can collect the temperature of the easy condensation area by controlling a temperature sensor arranged near the easy condensation area, or send an instruction to obtain the temperature of the easy condensation area to a temperature detection device used to detect the temperature of the easy condensation area. After receiving the instruction to obtain the temperature of the easy condensation area, the temperature detection device sends the collected temperature of the easy condensation area to the control circuit.

[0058] Step S130: Based on the dew point temperature and the temperature of the easy condensation area, the heating element is controlled to be turned on, maintained in an on state, turned off, or maintained in an off state.

[0059] The control circuit determines whether condensation occurs in the easy condensation zone based on the obtained dew point temperature and the temperature of the easy condensation zone, and controls the heating element to be turned on, maintained in an on state, turned off, or maintained in an off state. For example, the control circuit determines that condensation occurs or is about to occur in the easy condensation zone based on the obtained dew point temperature and the temperature of the easy condensation zone, and then the control circuit controls the heating element to be turned on or maintained in an on state, so that the heating element generates heat to increase the temperature of the easy condensation zone, thereby reducing the probability of condensation in the easy condensation zone; the control circuit determines that no condensation occurs in the easy condensation zone or that the refrigerator can still maintain no condensation after refrigeration for a period of time based on the obtained dew point temperature and the temperature of the easy condensation zone, and then the control circuit controls the heating element to be turned off or maintained in an off state, so as to reduce the energy consumption of the refrigerator.

[0060] Optionally, see Fig.10 , Fig.10 is a flow chart of an embodiment of step S130 provided by the present application, such as Fig.10 As shown, step S130 specifically includes the following steps:

[0061] Step S131: in response to the temperature of the easy condensation area being less than or equal to the dew point temperature, controlling the heating element to turn on or maintain the turned-on state.

[0062] When the temperature of the easy condensation area is lower than the dew point temperature, condensation will occur in the easy condensation area. Then, the control circuit compares the dew point temperature and the temperature of the easy condensation area based on the acquired dew point temperature and the temperature of the easy condensation area, and controls the heating element to be turned on or maintained in the turned-on state when the temperature of the easy condensation area is lower than or equal to the dew point temperature. That is, the control circuit controls the heating element to be turned on or maintained in the turned-on state when condensation occurs in the easy condensation area, so that the heating element generates heat to increase the temperature of the easy condensation area, so that condensation can stop occurring in the easy condensation area.

[0063] Step S132: In response to the temperature of the easy condensation area being greater than the dew point temperature, the heating element is controlled to be turned off or maintained in an off state.

[0064] When the temperature of the easy condensation area is lower than the dew point temperature, condensation will occur in the easy condensation area. Then, the control circuit compares the dew point temperature and the temperature of the easy condensation area based on the acquired dew point temperature and the temperature of the easy condensation area, and controls the heating element to be turned off or maintained in a turned-off state when the temperature of the easy condensation area is higher than the dew point temperature. That is, the control circuit controls the heating element to be turned off or maintained in a turned-off state when condensation does not occur in the easy condensation area, so that the heating element stops working, thereby reducing the energy consumption of the refrigerator.

[0065] See also Fig.11 , Fig.11 FIG. 1 is a flow chart of another embodiment of the refrigerator anti-condensation control method provided by the present application. Fig.11 As shown, the control circuit obtains the refrigeration compartment temperature and the refrigeration compartment humidity of the refrigerator refrigeration compartment, and obtains the temperature T1 of the easy condensation area, determines the dew point temperature T0 based on the refrigeration compartment temperature and the refrigeration compartment humidity, and judges whether the temperature T1 of the easy condensation area is less than or equal to the dew point temperature T0. If so, the control circuit controls the heating element to turn on or maintain the on state, and continues to obtain the temperature T1 of the easy condensation area for the next judgment; if not, controls the heating element to stop or maintain the stopped state, and continues to obtain the temperature T1 of the easy condensation area for the next judgment.

[0066] Optionally, a plurality of air outlet ducts 210 connected to the main duct are provided on the second side wall 130, and the second inner tank wall is formed with the same number of easy condensation areas as the set air outlet ducts 210. If a heating element is provided in each easy condensation area, when the control circuit controls the heating element to work based on the above control method, because the surface temperatures of the second inner tank wall corresponding to different easy condensation areas in the refrigeration compartment close to the refrigeration compartment are different, the temperature of the easy condensation area corresponding to each heating element is compared and determined with the dew point temperature according to the above control method, and the heating element is controlled to be turned on or maintained on, or the heating element is controlled to be stopped or maintained stopped.

[0067] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0068] Any process or method description in a flowchart or otherwise described herein may be understood to represent a mechanism, segment or portion of a code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0069] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, which can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or equipment (which can be a personal computer, server, network device or other system that can fetch instructions from and execute instructions of the instruction execution system, device or equipment), or used in combination with these instruction execution systems, devices or devices.

[0070] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A refrigerator, characterized in that: include: A box body is formed with a refrigeration compartment, the box body comprises a shell and an inner liner, the shell has a first shell wall and a second shell wall, the inner liner has a first inner liner wall and a second inner liner wall, the first shell wall and the first inner liner wall form a first side wall, the second shell wall and the second inner liner wall form a second side wall, and the first side wall and the second side wall are connected; an air supply duct, located between the shell and the inner tank, the air supply duct comprising a main duct and an air outlet duct which are connected to each other, the main duct being located on the first side wall or at the connection between the first side wall and the second side wall, the air outlet duct being located on the second side wall, the air outlet duct comprising an air inlet section connected to the main duct and an air outlet section connected to the refrigeration compartment, and an area of ​​the second inner tank wall corresponding to the air inlet section forming a condensation-prone area; a heating element, embedded in the easy condensation area of ​​the second inner liner wall, located between the air inlet section and the second inner liner wall, and / or located on the surface of the easy condensation area of ​​the second inner liner wall away from the second shell wall; A control circuit is electrically connected to the heating element, and the control circuit is used to control the heating element to be turned on, maintained in an on state, turned off, or maintained in an off state based on the temperature of the refrigeration compartment, the humidity of the refrigeration compartment, and the temperature of the easy condensation area.

2. The refrigerator according to claim 1, characterized in that: The refrigerator further comprises: A heat-insulating layer, located between the shell and the liner; Among them, the width of the air inlet section along the first direction is greater than the width of the air outlet section along the first direction, and the thickness of the insulation layer between the air inlet section and the second inner liner wall is less than the thickness of the insulation layer between the air outlet section and the second inner liner wall, and the first direction is the direction of the second shell wall toward the second inner liner wall.

3. The refrigerator according to claim 2, characterized in that: The heating element is buried in the insulation layer corresponding to the easy condensation area, located between the air inlet section and the insulation layer corresponding to the easy condensation area and / or between the insulation layer corresponding to the easy condensation area and the second inner liner wall.

4. The refrigerator according to claim 3, characterized in that: The air inlet section includes an air inlet area and a guide area, the guide area is connected between the air inlet area and the air outlet section, the guide area has a first wall surface close to the second inner tank wall and a second wall surface close to the second shell wall, and the distance between the first wall surface and the second wall surface in the first direction gradually decreases along the direction from the air inlet section toward the air outlet section.

5. The refrigerator according to claim 1, characterized in that: The second inner wall is provided with an air supply port, the air outlet section of the air outlet duct has an air outlet, the air outlet duct is connected to the refrigeration compartment through the air outlet and the air supply port, and the air supply port is located on the side of the heating element away from the first side wall.

6. The refrigerator according to claim 5, characterized in that: The refrigerator further comprises: The fabric cover plate is arranged to cover the air supply port, and the fabric cover plate comprises an air supply wall surface, and the air supply wall surface comprises at least one of fabric and non-woven fabric.

7. The refrigerator according to claim 6, characterized in that: The air supply wall surface has an air supply hole, and the air supply hole includes a through hole arranged on the air supply wall surface and / or a fiber gap on the air supply wall surface.

8. The refrigerator according to claim 7, characterized in that: The refrigerator further comprises: A detection device, electrically connected to the control circuit, for obtaining the temperature of the easy condensation area; Wherein, a mounting portion is provided at one end of the fabric cover plate close to the easy condensation area, the detection device is located at the mounting portion, and the mounting portion includes a groove structure, a hook structure, a sticky structure or a magnetic structure.

9. The refrigerator according to claim 1, characterized in that: The control circuit controls the heating element to be turned on, maintained in an on state, turned off, or maintained in an off state based on the temperature of the refrigeration compartment, the humidity of the refrigeration compartment, and the temperature of the easy condensation area, including: The control circuit calculates the dew point temperature of the refrigeration compartment based on the temperature of the refrigeration compartment and the humidity of the refrigeration compartment. In response to the temperature of the easy condensation area being less than or equal to the dew point temperature, the control circuit controls the heating element to be turned on or maintained in an on state. In response to the temperature of the easy condensation area being greater than the dew point temperature, the control circuit controls the heating element to be turned off or maintained in an off state.

10. A method for controlling condensation prevention in a refrigerator, characterized in that: The refrigerator comprising any one of claims 1 to 9, wherein the control method comprises: Acquiring a refrigeration compartment temperature and a refrigeration compartment humidity of the refrigeration compartment, and determining a dew point temperature of the easy condensation area based on the refrigeration compartment temperature and the refrigeration compartment humidity; Obtaining the temperature of the easy condensation area; Based on the dew point temperature and the temperature of the easy condensation area, the heating element is controlled to be turned on, maintained in an on state, turned off, or maintained in an off state.

11. The control method according to claim 10, characterized in that: The controlling the heating element to be turned on, maintained in an on state, turned off, or maintained in an off state based on the dew point temperature and the temperature of the easy condensation area includes: In response to the temperature of the easy condensation area being less than or equal to the dew point temperature, controlling the heating element to turn on or maintain an on state; In response to the temperature of the easy condensation area being greater than the dew point temperature, the heating element is controlled to be turned off or maintained in an off state.

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