Refrigerator

Abstract

The embodiment of the utility model relates to the technical field of household appliances, in particular to a refrigerator which comprises a refrigerator body, a refrigerating system and an air duct assembly, the air duct assembly comprises an air duct structure and an air door, and the air duct structure is constructed to form an air duct communicating an evaporation bin and a storage chamber; an abutting part is arranged in the air duct, and the air door can move relative to the abutting part; when the air door moves to abut against the abutting part in a matched mode, the air channel is blocked. When the air door moves to be separated from the abutting part, the air channel is communicated; the abutting part abuts against the air door, and the sealing gasket is arranged between the abutting part and the air door, so that the sealing performance between the abutting part and the air door is guaranteed, and the situation that air leaks between the air door and the abutting part, and temperature control of the storage chamber is affected is avoided; moreover, the abutting part is arranged to be of a non-planar structure protruding towards the air outlet of the air duct or protruding away from the air outlet, the abutting area of the abutting part and the air door is increased, the air door abuts against the abutting part in a matched mode, and the sealing performance between the abutting part and the air door is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of household appliances, and in particular to a refrigerator. Background Art

[0002] Refrigerators are a type of refrigeration equipment that can keep food or other items at a constant low temperature and are widely used in people's daily lives. The temperature of a refrigerator directly affects the state of the items stored, so it is crucial to maintain the temperature of the refrigerator.

[0003] A refrigerator usually includes a refrigerator compartment and a freezer compartment, which are separated at the top and bottom to store items that need to be stored at different temperatures. With the further development of refrigerator technology, the emergence of a variable temperature chamber allows users to flexibly adjust the storage temperature of the variable temperature chamber according to actual conditions when using the refrigerator. The adjustment range of the variable temperature chamber temperature is closely related to the sealing of the air door in the air duct. The existing variable temperature chamber air door has poor sealing performance, which affects the temperature control of the variable temperature chamber. Utility Model Content

[0004] The embodiment of the present application provides a refrigerator to solve the technical problem that the air door of the existing variable temperature chamber has poor sealing performance, which affects the temperature control of the variable temperature chamber.

[0005] In a first aspect, an embodiment of the present application provides a refrigerator, comprising:

[0006] A box body, wherein a storage compartment and an evaporation chamber are formed in the box body;

[0007] A refrigeration system is installed in the box and is configured to provide cooling for the storage compartment by controlling the refrigerant; the refrigeration system includes an evaporator, the evaporator is installed in the evaporation bin, and the evaporator is configured to vaporize the refrigerant;

[0008] The air duct assembly comprises an air duct structure and an air door, wherein the air duct structure is configured to form an air duct, wherein the air inlet of the air duct is configured to communicate with the evaporation bin, and the air outlet of the air duct is configured to communicate with the storage compartment; an abutment portion is formed in the air duct, and the abutment portion is provided with a connecting air outlet, and the abutment portion protrudes toward the air outlet or protrudes away from the air outlet; and the air door is configured to move relative to the abutment portion, wherein:

[0009] When the damper moves to a position matching and abutting with the abutting portion, the connecting vent is in a closed state; and a sealing gasket is provided between the damper and the abutting portion; when the damper moves to a position separated from the abutting portion and having a gap, the connecting vent is in an open state.

[0010] The refrigerator of the embodiment of the present application includes a box, a refrigeration system and an air duct assembly. A storage compartment and an evaporation bin are formed in the box. The refrigeration system is used to provide coldness for the storage compartment. The evaporator of the refrigeration system is installed in the evaporation bin. The evaporator vaporizes the refrigerant and absorbs heat. The air duct assembly connects the evaporation bin and the storage compartment to transport the cold air in the evaporation bin to the storage compartment. The air duct assembly includes an air duct structure and an air door. The air duct structure is constructed to form an air duct, and the air duct connects the evaporation bin and the storage compartment. An abutment portion is provided in the air duct, and the air door is configured to move relative to the abutment portion. When the air door moves to a position where it matches and abuts with the abutment portion, the connecting vent is in a closed state. A sealing pad is provided between the air door and the abutment portion. When the air door moves to a position where it is separated from the abutment portion and has a gap, the connecting vent is in an open state. A sealing gasket is provided between the abutting portion and the damper to ensure the sealing performance between the abutting portion and the damper, and to avoid air leakage between the damper and the abutting portion, which would affect the temperature control of the storage compartment; and, by setting the abutting portion as a non-planar structure that protrudes toward the air outlet of the air duct or protrudes away from the air outlet, the abutting area between the abutting portion and the damper is increased, and the damper and the abutting portion are matched and abutted, which is beneficial to improving the sealing performance between the abutting portion and the damper.

[0011] In some embodiments of the present application, the damper includes a first connecting portion and a switch portion that are connected to each other, the first connecting portion is constructed to be connected to the air duct structure; the switch portion is constructed to match and abut with the abutting portion, and the sealing gasket is arranged between the switch portion and the abutting portion.

[0012] The damper of this embodiment is connected to the air duct structure by setting a first connecting part, so that the damper can be installed and it is convenient for users to operate; by setting the switch part and the abutting part to match and abut, and setting a sealing gasket, the sealing performance between the abutting part and the damper is ensured, so as to avoid air leakage between the damper and the air duct and affect the temperature control of the storage compartment.

[0013] In some embodiments of the present application, the switch portion includes a connecting plate portion and a side panel portion, the side panel portion is connected to the edge of the connecting plate portion, the connecting plate portion is connected to the first connecting portion, the side panel portion is inclined away from the center of the connecting plate portion, and the side panel portion is constructed to match and abut with the abutment portion.

[0014] The switch portion of the present embodiment is connected to the first connecting portion by providing a connecting plate portion, and a side panel portion is provided at the edge of the connecting plate portion, so that a shell structure with an opening on one side is formed between the connecting plate portion and the side panel portion, and the side panel portion is matched and abutted against the abutting portion, thereby ensuring the sealing performance between the abutting portion and the damper, and the shell structure is conducive to reducing the weight of the damper, making it convenient for users to operate.

[0015] In some embodiments of the present application, the side panel portion and the first connecting portion are located on the same side of the connecting plate portion.

[0016] The side panel portion and the connecting plate portion of this embodiment are combined to form a shell structure which is open toward the air outlet, and the abutting portion is a groove which is open toward the air outlet. With such an arrangement, when the side panel portion and the abutting portion are matched and abutted, radial and axial abutting forces exist between the side panel portion and the abutting portion at the same time, which can not only further improve the sealing performance between the side panel portion and the abutting portion, but also improve the reliability of the damper in blocking the air duct.

[0017] In some embodiments of the present application, the sealing gasket may be bonded to a side of the side panel portion facing the abutting portion in a matching manner; or, the sealing gasket may be bonded to a side of the abutting portion facing the side panel portion in a matching manner.

[0018] The embodiment of the present application makes the sealing gasket relatively fixed by bonding it to the side panel portion or the abutting portion, thereby preventing the sealing gasket from being misplaced and affecting the sealing performance of the damper; and the bonding and fixing method of the sealing gasket is simple and reliable.

[0019] In some embodiments of the present application, the air duct assembly also includes a knob, which is installed on the air duct structure, and one end of the knob is located on the outside of the air duct, and the other end of the knob is located in the air duct and connected to the first connecting portion.

[0020] The air duct assembly of the embodiment of the present application is connected to the air duct structure and the first connecting part of the air door by setting a knob, so that the air door is installed on the air duct structure, and one end of the knob is located on the outside of the air duct, which is convenient for the user to operate the opening and closing of the air door through the knob.

[0021] In some embodiments of the present application, a mounting hole is provided on the air duct structure, and the knob is rotatably installed in the mounting hole.

[0022] In the embodiment of the present application, by setting the mounting hole in the air duct structure, the knob can be rotatably installed in the mounting hole, and the opening and closing of the air door can be controlled by rotating the knob, which is simple and reliable to operate.

[0023] In some embodiments of the present application, the other end of the knob is threadedly connected to the first connecting portion; an axial limiting portion is provided on the hole wall of the mounting hole, and a matching portion matching the axial limiting portion is provided on the knob; an anti-rotation structure is provided between the side panel portion and the abutting portion.

[0024] In the embodiment of the present application, the knob is threadedly connected to the first connecting part, the knob is rotatably installed in the mounting hole, and the knob and the mounting hole are provided with an axial limiter and a matching part to limit the movement of the knob along the axial direction of the mounting hole; in this way, when the user operates the knob to rotate, the side panel of the damper is driven to rotate spirally, and because an anti-rotation structure is provided between the side panel and the abutment, the side panel moves along the axial direction of the mounting hole under the restriction of the anti-rotation structure, so as to move toward or away from the abutment. Not only can the damper be opened and closed, but the threaded engagement can also ensure the mechanical stability of the damper after closing, and ensure the sealing performance of the damper.

[0025] In some embodiments of the present application, the air duct structure includes an air chamber component, a first cover plate and a second cover plate, the first cover plate and the second cover plate are respectively fixed on opposite sides of the air chamber component to form the air duct; the air outlet is formed on the first cover plate, and the second cover plate and the air chamber component jointly define the air inlet; the abutment portion is formed on the air chamber component.

[0026] The air duct structure of the present embodiment is formed by enclosing the air cavity component, the first cover plate and the second cover plate to form the air duct, which facilitates the separate molding of each part and avoids the increase of cost due to the complexity of the mold.

[0027] In a second aspect, an embodiment of the present application provides a refrigerator, comprising a box body and an air duct assembly; a storage compartment is formed in the box body; the air duct assembly comprises an air duct structure and an air door, the air duct structure is constructed to form an air duct, and the air door is constructed to move relative to the air duct to partition and seal the air duct, or to make the air duct conductive; when the air door partitions and seals the air duct, the sealing surface of the air door and the air duct is a convex surface.

[0028] The refrigerator in the embodiment of the present application, its air duct assembly includes an air duct structure and an air door, the air duct structure forms an air duct, the air door is installed in the air duct, and is constructed to partition and seal the air duct, or to make the air duct conductive; when the air door partitions and seals the air duct, the sealing surface between the air door and the air duct is a convex surface, so that the sealing surface between the air door and the air duct is a non-planar surface, which can increase the abutment area and ensure the stability of the air door closing, and can also improve the sealing performance of the air door. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0030] Figure 1 A schematic diagram of the structure of a refrigerator provided in an embodiment of the present application;

[0031] Figure 2 A schematic diagram of the principle of a refrigeration system provided in an embodiment of the present application;

[0032] Figure 3 A schematic diagram of the structure of the air duct assembly provided in an embodiment of the present application;

[0033] Figure 4 A front view of the air duct assembly provided in an embodiment of the present application;

[0034] Figure 5 for Figure 4 AA section view in;

[0035] Figure 6 for Figure 4 AA section exploded view in;

[0036] Figure 7 An exploded view of the air duct assembly provided in an embodiment of the present application;

[0037] Figure 8 An exploded view of the air duct structure of the air duct assembly provided in an embodiment of the present application;

[0038] Fig. 9 A schematic diagram of the structure of the air door of the air duct assembly provided in an embodiment of the present application;

[0039] Fig.10 A front view of the air door of the air duct assembly provided in an embodiment of the present application;

[0040] Fig.11 for Fig.10 BB section view in.

[0041] Description of reference numerals:

[0042] 100: box body; 101: storage compartment; 110: box shell; 120: box liner; 130: door body;

[0043] 200: refrigeration system; 210: evaporator; 220: compressor; 230: condenser; 240: throttling element;

[0044] 300: air duct assembly; 301: air duct; 302: air inlet; 303: air outlet; 304: connecting air outlet; 310: air duct structure; 311: air chamber component; 3110: air chamber; 3111: abutment portion; 3112: snap-fit ​​portion; 312: first cover plate; 3121: mounting hole; 3122: axial limiting portion; 3123: snap-fit ​​portion; 313: second cover plate; 320: damper; 321: first connecting portion; 322: switch portion; 3221: connecting plate portion; 3222: side panel portion; 330: sealing pad; 340: knob; 341: operating portion; 342: second connecting portion; 343: matching portion. DETAILED DESCRIPTION

[0045] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0046] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0047] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0048] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0049] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0050] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] A refrigerator usually includes a refrigerator compartment and a freezer compartment, which are separated at the top and bottom to store items that need to be stored at different temperatures. With the further development of refrigerator technology, the emergence of a variable temperature chamber allows users to flexibly adjust the storage temperature of the variable temperature chamber according to actual conditions when using the refrigerator. The adjustment range of the variable temperature chamber temperature is closely related to the sealing of the air door in the air duct. The existing variable temperature chamber air door has poor sealing performance, which affects the temperature control of the variable temperature chamber.

[0052] In view of this, the embodiment of the present application sets an abutting portion in the air duct, sets a connecting air outlet on the abutting portion, and the abutting portion protrudes toward the air outlet of the air duct, or protrudes away from the air outlet of the air duct, so that the abutting portion is non-planar; the damper is configured to move toward the abutting portion until it is sealed and abutted with the abutting portion, thereby closing the connecting air outlet to block the air duct; the damper is also configured to move away from the abutting portion until it is separated from the abutting portion, thereby opening the connecting air duct and making the air duct conductive. The embodiment of the present application improves the sealing performance of the damper by setting the abutting portion and the damper to be sealed and abutted with the non-planar surface, which is beneficial to the temperature control of the storage compartment.

[0053] 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.

[0054] Combination Figure 1 and Figure 2 The refrigerator of the embodiment of the present application includes: a box body 100 and a refrigeration system 200. A storage compartment 101 is formed in the box body 100 for storing food and other items. The storage compartment 101 can be divided into a refrigeration compartment, a freezing compartment, a variable temperature compartment, etc. due to different storage temperatures. Items can be directly stored in the storage compartment 101, or shelves, partitions, etc. are provided in the storage compartment 101, or drawers, sealed boxes, etc. are provided in the storage compartment 101. The refrigeration system 200 is installed in the box body 100 and is configured to provide cold air to the storage compartment 101 by controlling the refrigerant.

[0055] Exemplarily, the box body 100 may include a box shell 110, a box liner 120 and a door body 130. The box shell 110 is configured with a first chamber, and the box liner 120 is located in the first chamber. The box liner 120 may be configured with a storage compartment 101 having a take-in and put-out opening. A foam layer may also be filled between the first chamber and the box liner 120 to keep the storage compartment 101 warm.

[0056] The door body 130 is rotatably connected to the box shell 110 and is used to open or close the access opening. The number of door bodies 130 can be one or more. For example, one storage room 101 can be provided with one door body 130, or one storage room 101 can be provided with two door bodies 130, or multiple storage rooms 101 can be provided with one door body 130, which is not specifically limited in the embodiment of the present application.

[0057] The refrigeration system 200 of the embodiment of the present application may include an evaporator 210, a compressor 220, a condenser 230, and a throttling element 240. The compressor 220 is used to compress the refrigerant vapor to generate high-temperature and high-pressure vapor, and transport the refrigerant vapor to the condenser 230. The condenser 230 is used to liquefy the high-temperature and high-pressure refrigerant vapor to generate high-temperature and low-pressure refrigerant cold liquid, and transport the refrigerant cold liquid to the throttling element 240. After the throttling element 240 throttles and reduces the pressure of the refrigerant cold liquid, the high-pressure and low-temperature liquid is converted into a low-pressure and low-temperature refrigerant, and the low-pressure and low-temperature refrigerant is transported to the evaporator 210. After receiving the low-pressure and low-temperature refrigerant, the evaporator 210 makes it boil under isobaric conditions, absorbs heat and vaporizes, so as to reduce the temperature of the space in which it is located.

[0058] In some possible embodiments, the housing 100 is configured with an evaporation chamber and a compressor chamber, wherein the evaporation chamber can be arranged at the back of the freezing compartment, and the compressor chamber is arranged at the rear side of the bottom end of the housing 100. The compressor 220 is installed in the compressor chamber, and the compressor 220 generates heat during operation. A fan can also be arranged in the compressor chamber to dissipate heat from the compressor 220.

[0059] The evaporator 210 is installed in the evaporation bin, and the evaporator 210 absorbs heat to vaporize the refrigerant, so that the air temperature in the evaporation bin is reduced, and then the cold air flow is transported to the storage compartment 101 by the air duct to reduce the temperature of the storage compartment 101. Exemplarily, the refrigerator is provided with a freezing air duct, which connects the evaporation bin and the freezing compartment, and a freezing fan is provided in the freezing air duct, under the action of the freezing fan, the cold air in the evaporation bin is transported to the freezing compartment; the refrigerator is also provided with a refrigeration air duct, which can be connected to the freezing air duct and indirectly connected to the evaporation bin;

[0060] During the operation of the refrigeration system 200, since the evaporator 210 absorbs heat and vaporizes the refrigerant, resulting in a low temperature, the water vapor in the refrigerator is easily condensed on the evaporator 210 to form frost. Exemplarily, the refrigeration system 200 may further include a heating component, which is used to melt the frost condensed on the evaporator 210.

[0061] Combination Figures 3 to 6 The refrigerator of the embodiment of the present application further includes an air duct assembly 300, which is constructed to form an air duct 301, and the air duct 301 connects the storage compartment 101 and the evaporation bin to transport the cold air in the evaporation bin to the storage compartment 101, thereby reducing the temperature of the storage compartment 101. The storage compartment 101 can be a variable temperature room, a sealed box, etc. The air duct 301 can be directly connected to the evaporation bin, in which case a fan must be provided in the air duct 301 to provide power for air flow; or, the air duct 301 can be indirectly connected to the evaporation bin through other air ducts, such as a freezing air duct, in which case a fan may not be provided in the air duct 301, and a fan shared with the freezing air duct can be sufficient.

[0062] The air duct assembly 300 of the embodiment of the present application includes an air duct structure 310 and an air door 320. The air duct structure 310 is constructed to form an air duct 301. The air duct 301 has an air inlet 302 and an air outlet 303, wherein the air inlet 302 is constructed to be connected to the evaporation bin, and the air outlet 303 is connected to the storage compartment 101. In this way, the cold air in the evaporation bin can enter the storage compartment 101 through the air duct 301, thereby reducing the temperature of the storage compartment 101.

[0063] Of course, a return air port is provided in the storage room 101, and the refrigerator is also provided with a return air duct. The return air port is connected to the return air duct, and the return air duct is connected to the evaporation bin. In this way, a return air path is formed between the storage room 101 and the evaporation bin. While the air inlet 302 delivers cold air toward the storage room 101, the return air port delivers air with a higher temperature toward the evaporation bin. This cycle ensures a lower storage temperature of the storage room 101.

[0064] The damper 320 is configured to move relative to the air duct 301 to isolate and seal the air duct 301, thereby cutting off the cold air flow path between the evaporation bin and the storage compartment 101; or to open the air duct 301 so that the air inlet path between the evaporation bin and the storage compartment 101 is open.

[0065] When the damper 320 blocks and seals the air duct 301, the sealing surface between the damper 320 and the air duct 301 is a convex surface, and the convex surface can be convex toward the air outlet 303 of the air duct 301, or the convex surface can be convex away from the air outlet 303 of the air duct 301. In this way, the sealing surface between the damper 320 and the air duct 301 is a convex surface, which is a non-planar sealing structure, which is conducive to improving the sealing performance of the damper 320 and the air duct 301, and preventing air leakage when the damper 320 blocks the air duct 301, thereby affecting the temperature of the storage compartment 101.

[0066] Reference Figure 7 and Figure 8 In some embodiments, the air duct structure 310 includes an air cavity member 311, a first cover plate 312, and a second cover plate 313. The air cavity member 311 has an air cavity 3110 formed therein, and the air cavity member 311 has two opposite surfaces. The air cavity 3110 includes two connected parts, one of which is a groove with an opening arranged on one of the surfaces, and the other is a groove with an opening arranged on the other surface, and the two grooves are connected. Optionally, the air cavity member 311 is a foam member, which is light in weight and has good thermal insulation performance.

[0067] The first cover plate 312 and the second cover plate 313 are respectively fixed to opposite sides of the air chamber 311 to form an air duct 301. The first cover plate 312 is formed with an air outlet 303. The second cover plate 313 and the air chamber 311 together define an air inlet 302. Optionally, the air inlet 302 is located at the bottom end of the air chamber 311, so that it is convenient to communicate with the evaporation chamber.

[0068] The first cover plate 312 and the second cover plate 313 are respectively fixed to two opposite surfaces of the air chamber 311. The first cover plate 312 may include a cover plate body and a clamping portion 3123 disposed at the edge of the cover plate body. The air chamber 311 is provided with a clamping portion 3112, which is clamped with the clamping portion 3123, so as to fix the first cover plate 312 to the air chamber 311.

[0069] Of course, in order to improve the stability of the connection between the first cover plate 312 and the wind chamber component 311, a plurality of clamping portions 3123 are provided at the edge of the cover plate body, and the plurality of clamping portions 3123 are arranged at intervals along the edge of the cover plate body; correspondingly, a plurality of clamping portions 3112 are provided on the wind chamber component 311, and each clamping portion 3112 is clamped with one of the clamping portions 3123.

[0070] In order to improve the sealing performance of the air duct 301 , a sealing gasket may be further provided between the first cover plate 312 and the air cavity member 311 .

[0071] The second cover plate 313 can be bonded to the side of the air chamber 311 away from the first cover plate 312, which is not only simple to assemble but also has reliable sealing. For example, the second cover plate 313 can be a sealing foam with good sealing performance and light weight.

[0072] Combination Figures 4 to 6 In the embodiment of the present application, an abutment portion 3111 is formed in the air duct 301, and the abutment portion 3111 is provided with a connecting air opening 304. Exemplarily, part of the air duct wall of the air duct 301 extends toward the center to form the abutment portion 3111. In the embodiment of the present application, an abutment portion 3111 is formed on the air chamber member 311. The abutment portion 3111 is configured to cooperate with the damper 320 to block the connecting air opening 304.

[0073] The abutment portion 3111 of the embodiment of the present application is non-planar, and the abutment portion 3111 protrudes toward the air outlet 303 or protrudes away from the air outlet 303, so that the contact surface between the abutment portion 3111 and the damper 320 is a conical surface or an inclined surface, which is beneficial to increase the contact surface and improve the sealing performance. Figure 5 and Figure 6 In the structure shown, the abutting portion 3111 protrudes away from the air outlet 303 .

[0074] The damper 320 is configured to move relative to the abutting portion 3111. When the damper 320 moves to a position where it matches and abuts the abutting portion 3111, the connecting vent 304 is in a closed state, thereby blocking the air duct 301. In addition, a sealing pad 330 is provided between the damper 320 and the abutting portion 3111, which is conducive to improving the sealing performance of the abutment between the damper 320 and the abutting portion 3111, and preventing air leakage when the connecting vent 304 is closed, thereby affecting the temperature of the storage compartment. The damper 320 is also configured to move away from the abutting portion 3111. When the damper 320 moves to a position where it is separated from the abutting portion 3111 and has a gap, the connecting vent 304 is in an open state, thereby making the air duct 301 conductive.

[0075] In order to ensure the sealing performance of the damper 320 and the abutting portion 3111, the damper 320 and the abutting portion 3111 are matched and abutted, so that the shapes of the damper 320 and the abutting portion 3111 match. Figure 5 and Figure 6 As shown, the abutting portion 3111 protrudes away from the air outlet 303. At this time, the damper 320 protrudes away from the air outlet 303 and abuts against the abutting portion 3111 to ensure the sealing performance between the damper 320 and the abutting portion 3111. When the abutting portion 3111 protrudes toward the air outlet 303, the damper 320 protrudes toward the air outlet 303.

[0076] The abutting portion 3111 may be in a conical shape for easy processing; or, the abutting portion 3111 may be in a pyramidal shape, which cooperates with the damper 320 to limit the damper 320 from rotating relative to the abutting portion 3111 .

[0077] The refrigerator of the embodiment of the present application is provided with an abutting portion 3111 in the air duct 301, and a connecting air vent 304 is provided on the abutting portion 3111; the damper 320 moves toward the abutting portion 3111 until the damper 320 and the abutting portion 3111 are matched and abutted, thereby closing the connecting air vent 304; the abutting portion 3111 protrudes toward the air outlet 303 or protrudes away from the air outlet 303, so that the abutting surface of the abutting portion 3111 and the damper 320 is non-planar, and when the damper 320 moves toward the abutting portion 3111 until the abutment is made, the damper 320 and the abutting portion 3111 squeeze the sealing gasket 330 against each other, thereby further improving the sealing between the damper 320 and the abutting portion 3111.

[0078] Combination Figures 9 to 11 The damper 320 of the embodiment of the present application includes a first connection portion 321 and a switch portion 322 connected to each other, wherein the first connection portion 321 is configured to be connected to the air duct structure 310. The first connection portion 321 can be directly connected to the air duct structure 310. For example, the first connection portion 321 can be slidably mounted on the air duct structure 310, and the first connection portion 321 can drive the switch portion 322 to move toward or away from the abutting portion 3111. The first connection portion 321 can be indirectly connected to the air duct structure 310 through other structural parts, as long as the damper 320 can be moved toward or away from the abutting portion 3111. In the embodiment of the present application, the first connection portion 321 is configured to be connected to the first cover plate 312, and the first cover plate 312 faces the interior of the storage compartment, which is convenient for users to adjust.

[0079] Combination Figure 5 and Figure 6 The switch portion 322 is configured to match and abut the abutting portion 3111 to ensure the sealing performance between the damper 320 and the abutting portion 3111. When the abutting portion 3111 protrudes away from the air outlet 303, the switch portion 322 protrudes away from the air outlet 303; when the abutting portion 3111 protrudes toward the air outlet 303, the switch portion 322 protrudes toward the air outlet 303.

[0080] When the damper 320 moves to a position where the switch portion 322 and the abutting portion 3111 match and abut, the vent 304 is in a closed state; when the damper 320 moves to a position where the switch portion 322 and the abutting portion 3111 are separated and spaced apart, the vent 304 is in an open state.

[0081] In the embodiment of the present application, a sealing gasket 330 is provided between the switch portion 322 and the abutting portion 3111 to ensure the sealing between the switch portion 322 and the abutting portion 3111. The sealing gasket 330 can be matched and bonded to the side of the switch portion 322 facing the abutting portion 3111, or the sealing gasket 330 can be matched and bonded to the side of the abutting portion 3111 facing the switch portion 322. In the embodiment of the present application, the sealing gasket 330 is fixed to one of the abutting portion 3111 and the switch portion 322, so that the sealing gasket 330 is relatively fixed, so as to avoid the sealing gasket 330 from being misplaced during the movement of the damper 320, thereby affecting the sealing between the damper 320 and the air duct 301.

[0082] The embodiment of the present application does not limit the material of the sealing gasket 330, and it can be a sealing sponge, foam, etc.

[0083] The damper 320 of the embodiment of the present application is connected to the air duct structure 310 by setting a first connecting portion 321, and the damper 320 is installed on the air duct structure 310; the switch portion 322 is set to abut with the abutting portion 3111 to seal the air duct 301, thereby achieving a sealed connection between the damper 320 and the air duct 301, and avoiding air leakage between the damper 320 and the air duct 301 when the damper 320 is closed.

[0084] Continue to refer to Figures 9 to 11 The switch portion 322 includes a connecting plate portion 3221 and a side panel portion 3222 . The side panel portion 3222 is connected to an edge of the connecting plate portion 3221 . The side panel portion 3222 and the connecting plate portion 3221 form a shell structure with one side open.

[0085] The connecting plate portion 3221 is connected to the first connecting portion 321 . Exemplarily, the connecting plate portion 3221 and the first connecting portion 321 are an integrally formed one-piece with a stable structure.

[0086] The side panel portion 3222 is tilted away from the center of the connecting plate portion 3221, so that the side panel portion 3222 protrudes toward the air outlet 303 or protrudes away from the air outlet 303, which is beneficial to increase the abutting area between the side panel portion 3222 and the abutting portion 3111, and to improve the sealing performance between the damper 320 and the abutting portion 3111. When the damper 320 moves to the position where the side panel portion 3222 and the abutting portion 3111 match and abut, the connecting air outlet 304 is in a closed state, ensuring the sealing performance between the damper 320 and the abutting portion 3111. When the damper 320 moves to the position where the side panel portion 3222 and the abutting portion 3111 are separated and spaced apart, the connecting air outlet 304 is in an open state.

[0087] Combination Fig.11 The angle at which the side panel portion 3222 is inclined away from the center of the connecting plate portion 3221 is α, and the angle α is an acute angle. The embodiment of the present application does not limit the specific value of the angle α.

[0088] In some of the embodiments, the side panel portion 3222 and the first connecting portion 321 are located on the same side of the connecting plate portion 3221. Such an arrangement enables the switch portion 322 to be a conical structure protruding away from the air outlet 303, and the abutting portion 3111 to be a groove structure opening toward the air outlet 303. In this way, when the damper 320 moves toward the abutting portion 3111, not only can the connecting air outlet 304 be blocked, but radial and axial clamping forces are also formed between the side panel portion 3222 and the abutting portion 3111, which is beneficial to improve the sealing performance between the side panel portion 3222 and the abutting portion 3111.

[0089] In order to further improve the sealing performance between the damper 320 and the abutment portion 3111, the sealing gasket 330 is matched in shape with the switch portion 322, a portion of the sealing gasket 330 is located between the side panel portion 3222 and the abutment portion 3111, and the other portion of the sealing gasket 330 is located on the outside of the connecting plate portion 3221, thereby blocking the connecting air opening 304.

[0090] In an embodiment of the present application, the sealing gasket 330 can be bonded to a side of the side panel portion 3222 facing the abutment portion 3111; or, the sealing gasket 330 can be bonded to a side of the abutment portion 3111 facing the side panel portion 3222, so that the sealing gasket 330 is relatively fixed, thereby preventing the sealing gasket 330 from being misplaced during the movement of the damper 320 and affecting the sealing between the damper 320 and the air duct 301.

[0091] Combination Figures 5 to 7 The air duct assembly 300 of the embodiment of the present application further includes a knob 340, which is mounted on the first cover plate 312 of the air duct structure 310. The knob 340 has two opposite ends, one end of the knob 340 is located outside the air duct 301 for easy operation; the other end of the knob 340 is located inside the air duct 301 and connected to the first connection portion 321.

[0092] The air duct assembly 300 of the embodiment of the present application is connected to the air duct structure 310 and the first connecting part 321 of the air door 320 by setting a knob 340, so that the air door 320 is installed on the air duct structure 310, and one end of the knob 340 is located on the outside of the air duct 301, which is convenient for the user to operate the opening and closing of the air door 320 through the knob 340.

[0093] The knob 340 is an operating part for the user to operate the damper 320 to move, and one end of the knob 340 is connected to the second cover plate 313. Exemplarily, a mounting hole 3121 is provided on the second cover plate 313 of the air duct structure 310, and the knob 340 is rotatably installed in the mounting hole 3121, and at least a portion of the knob 340 is located in the air duct 301, and is threadedly connected to the first connection portion 321, and at least a portion of the knob 340 is located outside the air duct 301, which is convenient for user operation.

[0094] Optionally, a plurality of air outlets 303 are provided, and the plurality of air outlets 303 are arranged at intervals in the circumferential direction of the mounting hole 3121. The shape and number of the air outlets 303 are not limited in the embodiment of the present application.

[0095] In some examples, the second connecting portion 342 of the knob 340 can be rotatably installed in the mounting hole 3121, and the knob 340 can move axially along the mounting hole 3121 to push the damper 320 toward the abutment portion 3111 or away from the abutment portion 3111, and a locking structure is provided between the knob 340 and the second cover plate 313 so that the damper 320 remains in the moving position.

[0096] In the embodiment of the present application, by setting the mounting hole 3121 on the air duct structure 310, the knob 340 can be rotatably installed in the mounting hole 3121, and the opening and closing of the damper 320 can be controlled by rotating the knob 340, which is simple and reliable to operate.

[0097] In some examples, the knob 340 includes an operating portion 341 and a second connecting portion 342 connected to each other, the cross-sectional area of ​​the operating portion 341 is larger than the cross-sectional area of ​​the second connecting portion 342, and the operating portion 341 is located outside the air duct 301 for easy operation by the user; the second connecting portion 342 passes through the mounting hole 3121 into the air duct 301 and is connected to the first connecting portion 321, and the second connecting portion 342 is rotatable relative to the mounting hole 3121. In the embodiment of the present application, the second connecting portion 342 of the knob 340 is threadedly connected to the first connecting portion 321.

[0098] Exemplarily, the second connecting portion 342 is a cylindrical structure to facilitate thread processing; the operating portion 341 is a plate-like structure arranged perpendicular to the second connecting portion 342, and the edge of the plate-like structure is bent toward the second cover plate 313 to form a flange, thereby ensuring the smoothness of the edge of the operating portion 341, preventing the operator from being scratched by the edge of the operating portion 341, and improving the safety of the damper operation.

[0099] A threaded hole may be formed on the second connection part 342, and correspondingly, an external thread is formed on the first connection part 321; or, an external thread is formed on the second connection part 342, and correspondingly, a threaded hole is formed on the first connection part 321. In the embodiment of the present application, a threaded hole may be formed on the second connection part 342, so that the second connection part 342 can be rotatably installed in the installation hole 3121. The first connection part 321 is a hollow tube structure, which is conducive to reducing the weight of the damper 320 and facilitating user operation.

[0100] In some examples of the present application, an axial limiting portion 3122 is provided on the hole wall of the mounting hole 3121; the knob 340 is rotatably installed in the mounting hole 3121, and a matching portion 343 matching with the axial limiting portion 3122 is provided on the knob 340, so as to limit the axial movement of the knob 340 in the mounting hole 3121, and utilize the threaded connection between the first connecting portion 321 and the knob 340 to realize the movement of the damper 320 toward or away from the abutting portion 3111.

[0101] In some embodiments, the axial limiting portion 3122 is a groove provided on the hole wall of the mounting hole 3121, and correspondingly, the matching portion 343 is a protrusion provided on the second connecting portion 342 of the knob 340. In other embodiments, the axial limiting portion 3122 is a protrusion provided on the hole wall of the mounting hole 3121, and correspondingly, the matching portion 343 is a groove provided on the second connecting portion 342 of the knob 340.

[0102] The axial limiting portion 3122 may be an annular structure or an arc-shaped structure. The embodiment of the present application does not limit its shape as long as it can cooperate with the matching portion 343 to limit the axial movement of the knob 340 in the mounting hole 3121.

[0103] In some embodiments, a boss is provided on the side of the second cover plate 313 facing away from the wind chamber part 311, and the mounting hole 3121 is provided on the boss, and the mounting hole 3121 passes through the boss and the second cover plate 313. Such a configuration is conducive to increasing the axial length of the mounting hole 3121, and is conducive to improving the stability of the cooperation between the mounting hole 3121 and the second connecting portion 342 of the knob 340.

[0104] In the embodiment of the present application, an anti-rotation structure is provided between the side panel portion 3222 and the abutting portion 3111 to limit the relative rotation between the side panel portion 3222 and the abutting portion 3111. Thus, when the knob 340 rotates relative to the first cover plate 312, the second connecting portion 342 is driven to rotate. Due to the limitation of the anti-rotation structure, the first connecting portion 321 threadedly connected to the second connecting portion 342 moves axially toward or away from the abutting portion 3111. Such a configuration makes the moving structure of the damper 320 simple and convenient for processing and assembly.

[0105] In some examples, the anti-rotation structure may be a protrusion and a recess provided between the side panel portion 3222 and the abutting portion 3111 and cooperate with each other to limit the relative rotation between the side panel portion 3222 and the abutting portion 3111. In the embodiment of the present application, the side panel portion 3222 includes a plurality of inclined side walls connected in sequence, for example, four inclined side walls; the cross-sectional shape of the abutting portion 3111 is rectangular, so that the edge of the side panel portion 3222 cooperates with the abutting portion 3111 to limit the relative rotation between the side panel portion 3222 and the abutting portion 3111, and the structure is simple.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0107] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that: include: A box body, wherein a storage compartment and an evaporation chamber are formed in the box body; A refrigeration system is installed in the box and is configured to provide cooling for the storage compartment by controlling the refrigerant; the refrigeration system includes an evaporator, the evaporator is installed in the evaporation bin, and the evaporator is configured to vaporize the refrigerant; The air duct assembly comprises an air duct structure and an air door, wherein the air duct structure is configured to form an air duct, wherein the air inlet of the air duct is configured to communicate with the evaporation bin, and the air outlet of the air duct is configured to communicate with the storage compartment; an abutment portion is formed in the air duct, and the abutment portion is provided with a connecting air outlet, and the abutment portion protrudes toward the air outlet or protrudes away from the air outlet; and the air door is configured to move relative to the abutment portion, wherein: When the damper moves to a position matching and abutting with the abutting portion, the connecting vent is in a closed state; and a sealing gasket is provided between the damper and the abutting portion; when the damper moves to a position separated from the abutting portion and having a gap, the connecting vent is in an open state.

2. The refrigerator according to claim 1, characterized in that: The damper includes a first connecting portion and a switch portion connected to each other, wherein the first connecting portion is configured to be connected to the air duct structure; the switch portion is configured to match and abut with the abutting portion, and the sealing gasket is provided between the switch portion and the abutting portion.

3. The refrigerator according to claim 2, characterized in that: The switch portion includes a connecting plate portion and a side panel portion, wherein the side panel portion is connected to an edge of the connecting plate portion, the connecting plate portion is connected to the first connecting portion, the side panel portion is inclined away from the center of the connecting plate portion, and the side panel portion is configured to match and abut with the abutment portion.

4. The refrigerator according to claim 3, characterized in that: The side panel portion and the first connecting portion are located on the same side of the connecting plate portion.

5. The refrigerator according to claim 3, characterized in that: The sealing gasket may be bonded to a side of the side panel portion facing the abutting portion in a matching manner; or, the sealing gasket may be bonded to a side of the abutting portion facing the side panel portion in a matching manner.

6. The refrigerator according to claim 3, characterized in that: The air duct assembly also includes a knob, which is installed on the air duct structure, and one end of the knob is located outside the air duct, and the other end of the knob is located inside the air duct and connected to the first connecting portion.

7. The refrigerator according to claim 6, characterized in that: The air duct structure is provided with a mounting hole, and the knob is rotatably mounted in the mounting hole.

8. The refrigerator according to claim 7, characterized in that: An axial limiting portion is provided on the hole wall of the mounting hole, and a matching portion matching with the axial limiting portion is provided on the knob; the other end of the knob is threadedly connected to the first connecting portion; an anti-rotation structure is provided between the side panel portion and the abutting portion.

9. The refrigerator according to any one of claims 1 to 8, characterized in that: The air duct structure includes an air cavity part, a first cover plate and a second cover plate, the first cover plate and the second cover plate are respectively fixed on two opposite sides of the air cavity part to form the air duct; the air outlet is formed on the first cover plate, and the second cover plate and the air cavity part jointly define the air inlet; the abutment portion is formed on the air cavity part.

10. A refrigerator, characterized in that: It comprises a box body and an air duct assembly; a storage compartment is formed in the box body; the air duct assembly comprises an air duct structure and an air door, the air duct structure is constructed to form an air duct, and the air door is constructed to move relative to the air duct to separate and seal the air duct, or to make the air duct conductive; when the air door separates and seals the air duct, the sealing surface of the air door and the air duct is a convex surface.

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