Air door assembly and refrigerating device

Abstract

The utility model provides an air door assembly and a refrigerating device, and the air door assembly comprises a support which is provided with a ventilation hole in a penetrating manner; the door body is rotationally mounted on the bracket so as to open or block the ventilation hole; the limiting structure is movably arranged on the bracket; the driving structure is connected with the door body and the limiting structure; the driving structure drives the door body to rotate so as to block the ventilation hole, and then drives the limiting structure to move in the first direction and press the door body so as to lock the door body. The driving structure drives the limiting structure to move in the second direction and break away from the door body so as to unlock the door body and then drives the door body to rotate so as to open the ventilation hole, and the first direction is opposite to the second direction. According to the air door assembly, the limiting structure or the door body can be driven in sequence through the same driving structure, so that rotation or locking and unlocking of the door body are achieved, and the driving cost is saved.

Description

Technical Field

[0001] The present application belongs to the technical field of refrigerators, and in particular, relates to a damper assembly and a refrigeration device. Background Art

[0002] The cold air produced by the refrigeration device in the refrigerator is transported to each compartment through the air duct, and a damper is usually provided in the air duct to control the opening and closing of the air duct. In the prior art, the damper includes a bracket and a door body, and the door body is rotatably connected to the bracket to open or close the air duct. However, when the door body rotates to block the bracket to close the air duct, the door body may be displaced due to vibration or other external forces, resulting in a gap between the door body and the bracket, and then air leakage in the air duct occurs. Utility Model Content

[0003] The embodiments of the present application provide a damper assembly and a refrigeration device to solve the problem of air leakage in the damper of the existing refrigerator.

[0004] The embodiment of the present application provides a damper assembly, which is applied to a refrigerator, including:

[0005] A bracket having ventilation holes extending therethrough;

[0006] A door body is rotatably mounted on the bracket to open or block the ventilation hole;

[0007] A limiting structure, movably arranged on the bracket;

[0008] A driving structure is connected to the door body and the limiting structure; after the driving structure drives the door body to rotate to block the ventilation hole, the limiting structure is driven to move in a first direction and press against the door body to lock the door body; after the driving structure drives the limiting structure to move in a second direction and disengage from the door body to unlock the door body, the door body is driven to rotate to open the ventilation hole, and the first direction and the second direction are opposite.

[0009] Optionally, the bracket includes a first side wall and a second side wall adjacent to each other, the first side wall and the second side wall are extended in different directions, the ventilation hole is arranged on the first side wall, and the door body is rotatably mounted on a side of the first side wall facing the second side wall;

[0010] The second side wall is provided with a slideway, and the limiting structure includes a limiting rod, and the limiting rod is slidably arranged in the slideway to press the door body or avoid the rotation of the door body.

[0011] Optionally, the bracket further includes a third side wall and a fourth side wall adjacent to both the first side wall and the second side wall, the third side wall and the fourth side wall are arranged opposite to each other, and the slideway extends from an end of the second side wall close to the third side wall toward the fourth side wall;

[0012] The door body is located between the third side wall and the fourth side wall. When the limiting rod is close to the third side wall, the door body is unlocked. When the limiting rod abuts against a side of the door body away from the first side wall, the door body is locked.

[0013] Optionally, the door body comprises:

[0014] A door panel, rotatably mounted on the first side wall and facing the second side wall;

[0015] a limiting plate connected to a side of the door panel away from the first side wall, the limiting plate comprising a top surface away from the first side wall, the limiting plate being provided with a limiting inclined surface toward the third side wall, the limiting inclined surface connecting the door body and the top surface;

[0016] When the limiting rod slides to abut against the limiting inclined surface, the door body is locked.

[0017] Optionally, the bracket further comprises a fifth side wall opposite to the second side wall;

[0018] The door body also includes a rotating shaft located on the door panel near the third side wall, the rotating shaft is rotatably connected between the second side wall and the fifth side wall, and the driving structure drives the rotating shaft to rotate, so as to drive the door panel to rotate to abut against the third side wall and open the ventilation hole, and to rotate to abut against the first side wall and block the ventilation hole.

[0019] Optionally, the driving structure includes:

[0020] Power components;

[0021] A driving wheel, comprising a first rotating wheel and a plurality of first gear teeth arranged on the outer periphery of the first rotating wheel, wherein the first rotating wheel is rotatably connected to the power element;

[0022] a first transmission wheel set, connected to the limiting structure, and meshing with the first transmission wheel set when the plurality of first gear teeth of the driving wheel rotate toward the first transmission wheel set, wherein the first transmission wheel set is used to convert the rotational motion of the driving wheel into the linear motion of the limiting structure;

[0023] The second transmission wheel set is connected to the door body, and meshes with the second transmission wheel set when the multiple first gear teeth of the driving wheel rotate toward the second transmission wheel set. The second transmission wheel set is used to transmit the rotational motion of the driving wheel to the door body.

[0024] Optionally, the first transmission wheel set includes:

[0025] A first driven wheel meshing with a plurality of first gear teeth of the driving wheel;

[0026] A second driven wheel meshes with the first driven wheel, and the axle of the second driven wheel is perpendicular to the axle of the first driven wheel;

[0027] A rack is meshed with an end of the second driven wheel away from the first driven wheel, and the rack is connected to the limiting structure and drives the limiting structure to move.

[0028] Optionally, the first driven wheel comprises a first wheel body and a second wheel body which are coaxially arranged, and the first wheel body is meshed with a plurality of first gear teeth of the driving wheel;

[0029] The second driven wheel includes a third wheel body and a fourth wheel body which are coaxially arranged. The third wheel body is meshed with the second wheel body, and the fourth wheel body is meshed with the rack.

[0030] Optionally, the bracket further comprises a mounting box, the mounting box is arranged on a side of the second side wall away from the first side wall, and the driving structure is arranged in the mounting box;

[0031] The door body includes a rotating shaft, and the door body rotates through the rotating shaft, and one end of the rotating shaft extends into the installation box;

[0032] The second transmission wheel group includes a third driven wheel sleeved on the rotating shaft, the third driven wheel includes a fan-shaped second rotating wheel and a plurality of second gear teeth arranged on the outer periphery of the second rotating wheel, the second rotating wheel rotates between the rotating shaft and the driving wheel, and the plurality of second gear teeth are used to mesh with the plurality of first gear teeth of the driving wheel.

[0033] The present application also provides a refrigeration device, including:

[0034] Air duct;

[0035] The damper assembly as mentioned above is arranged in the air duct to control the opening and closing of the air duct.

[0036] In the damper assembly provided by the embodiment of the present application, after the driving structure drives the door body to rotate to block the ventilation hole of the bracket, the driving structure then drives the limiting structure to move and press the door body to lock the door body, thereby preventing the door body from leaking air when the ventilation hole is blocked; when the ventilation hole of the bracket needs to be opened, the limiting structure needs to be driven to separate from the door body by the driving structure first, thereby unlocking the door body, and then driving the door body to rotate to open the ventilation hole. That is, the limiting structure or the door body can be driven successively by the same driving structure to realize the rotation or locking and unlocking of the door body, thereby saving the driving cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0038] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0039] Figure 1 A schematic diagram of the structure of the damper assembly provided in an embodiment of the present application when the door body is closed.

[0040] Figure 2 A schematic diagram of the structure of the damper assembly provided in an embodiment of the present application when the door body is open.

[0041] Figure 3 A schematic structural diagram of the cooperation between the driving wheel and the second transmission wheel set of the damper assembly provided in an embodiment of the present application.

[0042] Figure 4 A schematic structural diagram of the cooperation between the driving wheel and the first transmission wheel group of the damper assembly provided in an embodiment of the present application.

[0043] Figure 5 A schematic structural diagram of a door body of a damper assembly provided in an embodiment of the present application.

[0044] Figure 6 A schematic diagram of the structure of a refrigeration device provided in an embodiment of the present application.

[0045] Description of reference numerals:

[0046] 1. bracket; 11. first side wall; 111. ventilation hole; 12. second side wall; 121. slideway; 13. third side wall; 14. fourth side wall; 15. fifth side wall; 16. installation box;

[0047] 2. Door body; 21. Door panel; 22. Limiting plate; 221. Top surface; 222. Limiting inclined surface; 23. Rotating shaft;

[0048] 3. Limiting structure;

[0049] 4. Power components;

[0050] 5. driving wheel; 51. first rotating wheel; 52. first gear tooth;

[0051] 6. First transmission wheel set; 61. First driven wheel; 611. First wheel body; 612. Second wheel body; 62. Second driven wheel; 621. Third wheel body; 622. Fourth wheel body; 63. Rack;

[0052] 7. The third driven wheel; 71. The second rotating wheel; 72. The second gear teeth. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0054] The embodiments of the present application provide a damper assembly and a refrigeration device to solve the problem of air leakage in the damper of an existing refrigerator, which will be described below with reference to the accompanying drawings.

[0055] The damper assembly provided in the embodiment of the present application is applied to a refrigerator. Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the door body 2 of the damper assembly provided in the embodiment of the present application when it is closed. Figure 2 The structural schematic diagram of the damper assembly provided in the embodiment of the present application when the door body 2 is opened, the damper assembly includes a bracket 1, a door body 2, a limiting structure 3 and a driving structure. The bracket 1 is provided with a ventilation hole 111; the door body 2 is rotatably mounted on the bracket 1 to open or block the ventilation hole 111; the limiting structure 3 is movably arranged on the bracket 1; the driving structure is connected to the door body 2 and the limiting structure 3; after the driving structure drives the door body 2 to rotate to block the ventilation hole 111, it drives the limiting structure 3 to move in the first direction and press the door body 2 to lock the door body 2; after the driving structure drives the limiting structure 3 to move in the second direction and disengage from the door body 2 to unlock the door body 2, it drives the door body 2 to rotate to open the ventilation hole 111, and the first direction and the second direction are opposite. The first direction and the second direction are not further limited here.

[0056] In the damper assembly provided by the embodiment of the present application, after the driving structure drives the door body 2 to rotate to block the ventilation hole 111 of the bracket 1, the driving structure then drives the limiting structure 3 to move and press the door body 2 to lock the door body 2, thereby preventing the door body 2 from leaking air when the ventilation hole 111 is blocked; when the ventilation hole 111 of the bracket 1 needs to be opened, the limiting structure 3 needs to be driven by the driving structure to separate from the door body 2 to unlock the door body 2, and then the door body 2 needs to be driven to rotate to open the ventilation hole 111. That is, the limiting structure 3 or the door body 2 can be driven successively by the same driving structure to realize the rotation or locking and unlocking of the door body 2, thereby saving the driving cost.

[0057] Optionally, the bracket 1 includes a first side wall 11 and a second side wall 12 adjacent to each other, the first side wall 11 and the second side wall 12 are extended in different directions, the ventilation hole 111 is arranged on the first side wall 11, and the door body 2 is rotatably installed on the side of the first side wall 11 facing the second side wall 12; a slideway 121 is arranged on the second side wall 12, and the limiting structure 3 includes a limiting rod, and the limiting rod is slidably arranged in the slideway 121 to press the door body 2 or avoid the rotation of the door body 2. In some examples, the first side wall 11 and the second side wall 12 can be perpendicular to each other. By arranging the slideway 121 on the second side wall 12 to limit the sliding direction of the limiting rod, it is ensured that the movement trajectory of the limiting rod will not deviate, and the locking or unlocking of the door body 2 can be achieved by driving the sliding of the limiting rod by the driving structure. Among them, the gas flows from the first side wall 11 to one side of the door body 2.

[0058] As a specific implementation, the area of ​​the door body 2 is larger than the area of ​​the ventilation hole 111, so the door body 2 completely covers the ventilation hole 111 and is movably overlapped with the first side wall 11. When the limit rod slides to the side of the door body 2 away from the first side wall 11, the door body 2 is pressed against the first side wall 11, thereby locking the door body 2.

[0059] As another specific implementation, the area of ​​the door body 2 is the same as the area of ​​the ventilation hole 111, that is, the door body 2 is rotatably connected in the ventilation hole 111 to block the ventilation hole 111. Since the wind direction is fixed in one direction, the limit rod only needs to be set on the downstream side of the door body 2 along the direction of gas flow to limit the door body 2. The limit rod here is set on the second side wall 12.

[0060] Optionally, the bracket 1 further includes a third side wall 13 and a fourth side wall 14 adjacent to both the first side wall 11 and the second side wall 12, the third side wall 13 and the fourth side wall 14 are arranged opposite to each other, and the slideway 121 extends from an end of the second side wall 12 close to the third side wall 13 toward the fourth side wall 14, at this time, the first direction is from the third side wall 13 toward the fourth side wall 14, and the second direction is from the fourth side wall 14 toward the third side wall 13. The door body 2 is located between the third side wall 13 and the fourth side wall 14, when the limit rod approaches the third side wall 13, the door body 2 is unlocked, and when the limit rod abuts against the side of the door body 2 away from the first side wall 11, the door body 2 is locked. Further, a gap is provided between the door body 2 and the third side wall 13 to accommodate the limit rod when the door body 2 is unlocked. That is, when the limit rod slides along the slide 121 toward one end of the third side wall 13 and extends into the gap, the door body 2 is unlocked; when the limit rod slides along the slide 121 toward one end of the fourth side wall 14 and extends to the side of the door body 2 away from the first side wall 11, the door body 2 is locked.

[0061] Optionally, see Figure 5 , Figure 5The schematic diagram of the structure of the door body 2 of the damper assembly provided in the embodiment of the present application, the door body 2 includes a door panel 21 and a stop plate 22. The door panel 21 is rotatably mounted on the side of the first side wall 11 facing the second side wall 12; the stop plate 22 is connected to the side of the door panel 21 away from the first side wall 11, the stop plate 22 includes a top surface 221 away from the first side wall 11, the stop plate 22 is provided with a stop inclined surface 222 facing the third side wall 13, and the stop inclined surface 222 connects the door body 2 and the top surface 221; when the stop rod slides to abut against the stop inclined surface 222, the door body 2 is locked. It should be noted that the distance between the top surface 221 and the first side wall 11 is greater than the distance between the side of the slide 121 close to the first side wall 11 and the first side wall 11, that is, the limiting slope 222 and the orthographic projection of the slide 121 on the second side wall 12 have an intersection, so as to ensure that the limiting rod can be in contact with the limiting slope 222 at a certain position when sliding in the slide 121.

[0062] By setting the limiting inclined surface 222 on the limiting plate 22, when the door body 2 needs to be locked, the limiting rod slides toward one end of the fourth side wall 14, and then contacts the limiting inclined surface 222 and continues to slide along the limiting inclined surface 222. As the height of the limiting inclined surface 222 increases, the limiting rod is limited, so that the limiting rod cannot continue to slide and then abuts against the limiting inclined surface 222 and stops, thereby locking the door body 2. Since the limiting inclined surface 222 is a slope, there is a buffering process for the limiting rod. The limiting rod first contacts the limiting inclined surface 222 and slides a distance before stopping. The limiting rod has a certain deceleration time, thereby reducing the impact force at the abutment between the limiting rod and the limiting inclined surface 222, preventing the limiting rod or the limiting inclined surface 222 from breaking after multiple collisions, thereby extending the service life of the equipment.

[0063] In some examples, the limiting slope 222 can also be set on the end of the limiting plate 22 facing the fourth side wall 14. Correspondingly, the slide 121 extends from the end of the second side wall 12 close to the fourth side wall 14 toward the third side wall 13. Therefore, when the limiting rod slides toward the third side wall 13, it can be limitedly abutted against the limiting slope 222. When sliding toward the fourth side wall 14, it can be separated from the door body 2 to avoid the rotation of the door body 2.

[0064] Optionally, the bracket 1 further includes a fifth side wall 15 opposite to the second side wall 12; the door body 2 further includes a rotating shaft 23 located on the door panel 21 near the third side wall 13, the rotating shaft 23 is rotatably connected between the second side wall 12 and the fifth side wall 15, and the driving structure drives the rotating shaft 23 to rotate, so as to drive the door panel 21 to rotate to abut against the third side wall 13 and open the ventilation hole 111, and to abut against the first side wall 11 and block the ventilation hole 111. The rotating shaft 23 drives the door panel 21 to move, and at the same time, the first side wall 11 and the third side wall 13 respectively limit the door panel 21 in the locked state and the door panel 21 in the unlocked state to prevent the door panel 21 from rotating beyond the set position.

[0065] As a replaceable embodiment, the rotating shaft 23 is located on the side of the door panel 21 close to the fourth side wall 14. When the door panel 21 needs to be unlocked, the limiting rod slides toward the third side wall 13 to unlock the door panel 21, and the door panel 21 can be rotated along the rotating shaft 23 toward the fourth side wall 14; when the door panel 21 needs to be locked, the door panel 21 is rotated along the rotating shaft 23 toward the first side wall 11 and overlaps the first side wall 11, and the limiting rod moves toward the fourth side wall 14 and abuts against the limiting slope 222 to achieve locking of the door body 2.

[0066] Optionally, a pair of limiting structures 3 may be provided, one is provided on the second side wall 12 , and the other is provided on the fifth side wall 15 .

[0067] Optionally, see Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the structure of the driving wheel 5 of the damper assembly provided in the embodiment of the present application cooperating with the second transmission wheel group, Figure 4 The schematic diagram of the structure of the driving wheel 5 and the first transmission wheel group 6 of the damper assembly provided in the embodiment of the present application, the driving structure includes a power element, a driving wheel 5, a first transmission wheel group 6 and a second transmission wheel group. In some examples, the power element can be a rotary motor. The driving wheel 5 includes a first rotating wheel 51 and a plurality of first gear teeth 52 arranged on the outer periphery of the first rotating wheel 51. The first rotating wheel 51 is rotatably connected with the power element, that is, the power element drives the first rotating wheel 51 to rotate; the first transmission wheel group 6 is connected with the limiting structure 3, and when the plurality of first gear teeth 52 of the driving wheel 5 rotate to the first transmission wheel group 6, it meshes with the first transmission wheel group 6, and the first transmission wheel group 6 is used to convert the rotational motion of the driving wheel 5 into the linear motion of the limiting structure 3; the second transmission wheel group is connected with the door body 2, and when the plurality of first gear teeth 52 of the driving wheel 5 rotate to the second transmission wheel group, it meshes with the second transmission wheel group, and the second transmission wheel group is used to transmit the rotational motion of the driving wheel 5 to the door body 2. Specifically, the first transmission wheel set 6 and the second transmission wheel set are arranged on both sides of the driving wheel 5 along the outer circumference of the driving wheel 5 .

[0068] Since only a part of the arc on the outer circumference of the first rotating wheel 51 of the driving wheel 5 is provided with a plurality of first gear teeth 52, when the plurality of first gear teeth 52 of the driving wheel 5 rotates toward the first transmission wheel group 6, they can mesh with the first transmission wheel group 6, and when the plurality of first gear teeth 52 of the driving wheel 5 rotates toward the second transmission wheel group, they can mesh with the second transmission wheel group, thereby realizing that the driving wheel 5 successively drives the rotation of the door body 2 or the movement of the limiting structure 3, and a power source is provided for both the door body 2 and the limiting structure 3 through a power element 4.

[0069] Optionally, the first transmission wheel group 6 includes a first driven wheel 61, a second driven wheel 62 and a rack 63. The first driven wheel 61 meshes with a plurality of first gear teeth 52 of the driving wheel 5; the second driven wheel 62 meshes with the first driven wheel 61, and the axle of the second driven wheel 62 is perpendicular to the axle of the first driven wheel 61; the rack 63 meshes at one end of the second driven wheel 62 away from the first driven wheel 61, and the rack 63 is connected to the limiting structure 3 and drives the limiting structure 3 to move, that is, one end of the limiting structure 3 is connected to the rack 63, and the other end is extended in the slideway 121. Specifically, the limiting structure 3 is connected to the back of the side of the rack 63 where the teeth are provided. The first driven wheel 61, the second driven wheel 62 and the rack 63 are meshed in sequence to realize the conversion of the rotational motion of the driving wheel 5 into the linear motion of the rack 63, and then the rack 63 drives the limiting structure 3 to move along the slideway 121.

[0070] Optionally, the first driven wheel 61 includes a first wheel body 611 and a second wheel body 612 arranged coaxially, the first wheel body 611 meshes with a plurality of first gear teeth 52 of the driving wheel 5; the second driven wheel 62 includes a third wheel body 621 and a fourth wheel body 622 arranged coaxially, the third wheel body 621 meshes with the second wheel body 612, and the fourth wheel body 622 meshes with the rack 63. In some examples, the second wheel body 612 and the third wheel body 621 can be a pair of bevel gears that cooperate with each other. Since the first driven wheel 61 and the second driven wheel 62 both have two wheel bodies, while realizing the transmission function, the installation space is saved, and at the same time, the transmission ratio between the two matching wheel bodies can be freely adjusted to adjust the sliding speed of the limiting structure 3.

[0071] Optionally, the bracket 1 also includes an installation box 16, which is arranged on the side of the second side wall 12 away from the first side wall 11, and the driving structure is arranged in the installation box 16; the door body 2 includes a rotating shaft 23, and the door body 2 rotates through the rotating shaft 23, and one end of the rotating shaft 23 extends into the installation box 16; the second transmission wheel group includes a third driven wheel 7 mounted on the rotating shaft 23, the third driven wheel 7 includes a fan-shaped second rotating wheel 71 and a plurality of second gear teeth 72 arranged on the outer periphery of the second rotating wheel 71, the second rotating wheel 71 rotates between the rotating shaft 23 and the driving wheel 5, and the plurality of second gear teeth 72 are used to engage with the plurality of first gear teeth 52 of the driving wheel 5.

[0072] By configuring the third driven wheel 7 to be fan-shaped and rotating between the rotating shaft 23 and the driving wheel 5 , the third driven wheel 7 is prevented from rotating to the side of the rotating shaft 23 away from the driving wheel 5 , thereby increasing the size of the installation box 16 .

[0073] The present application also provides a refrigeration device, including an air duct and a damper assembly as described above. The damper assembly is arranged in the air duct to control the opening and closing of the air duct. Specifically, the refrigeration device may be a refrigerator, and the model of the refrigerator is not further limited here. For example, it may be a single-door refrigerator. Figure 6 , Figure 6 A schematic diagram of the structure of a refrigeration device provided in an embodiment of the present application.

[0074] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0075] In the description of this application, 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 technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0076] The damper assembly and refrigeration device provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A damper assembly, applied to a refrigerator, characterized in that: include: A bracket having ventilation holes extending therethrough; A door body is rotatably mounted on the bracket to open or block the ventilation hole; A limiting structure, movably arranged on the bracket; A driving structure connected to the door body and the limiting structure; after the driving structure drives the door body to rotate to block the ventilation hole, the limiting structure is driven to move along the first direction and press against the door body to lock the door body; After the driving structure drives the limiting structure to move along the second direction and disengage from the door body to unlock the door body, the driving structure then drives the door body to rotate to open the ventilation hole, and the first direction and the second direction are opposite.

2. The damper assembly according to claim 1, characterized in that: The bracket includes a first side wall and a second side wall adjacent to each other, the first side wall and the second side wall are extended in different directions, the ventilation hole is arranged on the first side wall, and the door body is rotatably mounted on a side of the first side wall facing the second side wall; The second side wall is provided with a slideway, and the limiting structure includes a limiting rod, and the limiting rod is slidably arranged in the slideway to press the door body or avoid the rotation of the door body.

3. The damper assembly according to claim 2, characterized in that: The bracket further includes a third side wall and a fourth side wall adjacent to the first side wall and the second side wall, the third side wall and the fourth side wall are arranged opposite to each other, and the slideway extends from an end of the second side wall close to the third side wall toward the fourth side wall; The door body is located between the third side wall and the fourth side wall. When the limiting rod is close to the third side wall, the door body is unlocked. When the limiting rod abuts against a side of the door body away from the first side wall, the door body is locked.

4. The damper assembly according to claim 3, characterized in that: The door body comprises: A door panel, rotatably mounted on the first side wall and facing the second side wall; a limiting plate connected to a side of the door panel away from the first side wall, the limiting plate comprising a top surface away from the first side wall, the limiting plate being provided with a limiting inclined surface toward the third side wall, the limiting inclined surface connecting the door body and the top surface; When the limiting rod slides to abut against the limiting inclined surface, the door body is locked.

5. The damper assembly according to claim 4, characterized in that: The bracket further includes a fifth side wall opposite to the second side wall; The door body also includes a rotating shaft located on the door panel near the third side wall, the rotating shaft is rotatably connected between the second side wall and the fifth side wall, and the driving structure drives the rotating shaft to rotate, so as to drive the door panel to rotate to abut against the third side wall and open the ventilation hole, and to rotate to abut against the first side wall and block the ventilation hole.

6. The damper assembly according to claim 2, characterized in that: The driving structure comprises: Power components; A driving wheel, comprising a first rotating wheel and a plurality of first gear teeth arranged on the outer periphery of the first rotating wheel, wherein the first rotating wheel is rotatably connected to the power element; a first transmission wheel set, connected to the limiting structure, and meshing with the first transmission wheel set when the plurality of first gear teeth of the driving wheel rotate toward the first transmission wheel set, wherein the first transmission wheel set is used to convert the rotational motion of the driving wheel into the linear motion of the limiting structure; The second transmission wheel set is connected to the door body, and meshes with the second transmission wheel set when the multiple first gear teeth of the driving wheel rotate toward the second transmission wheel set. The second transmission wheel set is used to transmit the rotational motion of the driving wheel to the door body.

7. The damper assembly according to claim 6, characterized in that: The first transmission wheel set comprises: A first driven wheel meshing with a plurality of first gear teeth of the driving wheel; A second driven wheel meshes with the first driven wheel, and the axle of the second driven wheel is perpendicular to the axle of the first driven wheel; A rack is meshed with an end of the second driven wheel away from the first driven wheel, and the rack is connected to the limiting structure and drives the limiting structure to move.

8. The damper assembly according to claim 7, characterized in that: The first driven wheel comprises a first wheel body and a second wheel body which are coaxially arranged, and the first wheel body is meshed with a plurality of first gear teeth of the driving wheel; The second driven wheel includes a third wheel body and a fourth wheel body which are coaxially arranged. The third wheel body is meshed with the second wheel body, and the fourth wheel body is meshed with the rack.

9. The damper assembly according to claim 6, characterized in that: The bracket further comprises an installation box, the installation box is arranged on a side of the second side wall away from the first side wall, and the driving structure is arranged in the installation box; The door body includes a rotating shaft, and the door body rotates through the rotating shaft, and one end of the rotating shaft extends into the installation box; The second transmission wheel group includes a third driven wheel sleeved on the rotating shaft, the third driven wheel includes a fan-shaped second rotating wheel and a plurality of second gear teeth arranged on the outer periphery of the second rotating wheel, the second rotating wheel rotates between the rotating shaft and the driving wheel, and the plurality of second gear teeth are used to mesh with the plurality of first gear teeth of the driving wheel.

10. A refrigeration device, characterized in that: include: Air duct; The damper assembly according to any one of claims 1 to 9 is arranged in the air duct to control the opening and closing of the air duct.

Images