Air duct assembly and refrigerator

Abstract

The air duct assembly comprises an air duct front cover, a sealing connecting piece rotationally connected to the rear side of the air duct front cover, and an air duct rear cover arranged on the rear side of the air duct front cover and assembled and matched with the sealing connecting piece, and the opposite sides of the sealing connecting piece and an air duct cover plate are provided with inserting structures matched with each other in an inserting mode. Therefore, when the sealing connecting piece rotates by a certain angle relative to the air duct front cover, the air duct rear cover is fixed to the sealing connecting piece in an inserted mode and rotates towards the air duct front cover after being fixed in an inserted mode so as to be fixed to the air duct front cover, assembly and disassembly of the air duct rear cover are optimized, and after-sales maintenance is facilitated.

Description

Technical Field

[0001] The invention relates to the field of refrigeration, and in particular to an air duct component and a refrigerator. Background Art

[0002] Most of the internal air ducts of refrigerators on the market need to be glued with seals to achieve functions such as thermal insulation and sealing. These seals are glued to plastic parts and foam parts with strong adhesiveness, which leads to damage of foam parts when removing parts during subsequent after-sales repair of the air duct. Moreover, during reassembly, after-sales personnel are not equipped with relevant seals, resulting in the air duct being unable to be reassembled after being disassembled. Therefore, the entire air duct assembly needs to be replaced, which has high maintenance costs. Summary of the invention

[0003] One of the purposes of the present invention is to provide an air duct assembly to solve the technical problem of high disassembly and maintenance cost of the air duct assembly in the prior art.

[0004] One of the objects of the present invention is to provide a refrigerator.

[0005] To achieve one of the above-mentioned purposes of the invention, one embodiment of the present invention provides an air duct assembly including: a duct front cover, a sealing connector rotatably connected to the rear side of the duct front cover, and a duct rear cover disposed on the rear side of the duct front cover and assembled with the sealing connector, wherein the sealing connector and the duct cover have plug-in structures on opposite sides thereof that are plugged in and matched with each other, so that when the sealing connector is rotated a certain angle relative to the duct front cover, the duct rear cover is plugged and fixed with the sealing connector, and after being plugged and fixed, it rotates toward the direction of the duct front cover to be fixed with the duct front cover.

[0006] As a further improvement of one embodiment of the present invention, the sealing connector includes a connecting wall, and the sealing connector is provided with a rotating shaft and a snap protrusion on both sides of the connecting wall, and the duct front cover is provided with a rotating groove cooperating with the rotating shaft and a snap groove cooperating with the snap protrusion, so that the sealing connector has a rotating state that can rotate relative to the duct front cover or a fixed state that is snap-fixed relative to the duct front cover.

[0007] As a further improvement of one embodiment of the present invention, the sealing connector includes a step wall arranged on the connecting wall near the duct rear cover, a slot opening toward the duct rear cover is formed between the step wall and the connecting wall for assembly of the duct rear cover, buckling protrusions are arranged on both sides of the duct rear cover, and the duct front cover is provided with buckling grooves matching the buckling protrusions.

[0008] As a further improvement of one embodiment of the present invention, the duct front cover includes an duct foam plate, the duct foam plate includes a first foam plate located above and a second foam plate located below the first foam plate, the first foam plate is provided with an air guide cavity to form a first air guide channel, the sealing connector covers part of the air guide cavity, the duct rear cover blocks the second foam plate and forms a second air guide channel between the second foam plate, the duct rear cover is provided with an air outlet corresponding to the air guide cavity, and the air outlet connects the first air guide channel and the second air guide channel.

[0009] As a further improvement of one embodiment of the present invention, the air duct back cover is provided with an air guide wall for cooperating with the slot, the top edge of the air guide wall is provided with a first sealing strip and is jointly plugged into the slot, and the port at the top edge of the air guide wall forms the air outlet.

[0010] As a further improvement of one embodiment of the present invention, the air duct assembly includes a sealing foam for covering the air guide cavity, the sealing connector covers a portion of the air guide cavity adjacent to the air duct back cover, the sealing foam covers other portions of the air guide cavity away from the air duct back cover, and the sealing foam covers the surface of the sealing connector.

[0011] As a further improvement of one embodiment of the present invention, the side of the sealing foam facing the air duct foam plate is an adhesive surface, and the sealing foam covers the surface of the air guide cavity and the sealing connector.

[0012] As a further improvement of an embodiment of the present invention, the step wall is connected to the connecting wall to form a step surface facing away from the rear cover of the air duct, and the sealing foam is adhered to the connecting wall and the bottom end abuts against the step surface.

[0013] As a further improvement of one embodiment of the present invention, the air duct foam plate includes at least two first foam plates arranged in a transverse direction, the sealing foam is adhered to the first foam plates, each of the first foam plates is away from the opening of the air duct front cover and forms the air guide cavity, and the sealing connector seals the connection between the air outlet and the air guide cavity.

[0014] To achieve one of the above-mentioned purposes of the invention, one embodiment of the present invention provides a refrigerator, comprising an air duct assembly as described in any one of the above-mentioned technical solutions.

[0015] Compared with the prior art, the present invention provides an air duct assembly, in which a sealing connector can be rotated to cooperate with the air duct front cover, and the air duct rear cover is first assembled with the sealing connector, and then rotated together with the sealing connector to be assembled into the air duct front cover; when disassembling, the air duct rear cover and the sealing connector are first rotated together to disengage the buckle of the air duct front cover, and then the air duct rear cover is pulled out from the bottom of the sealing connector; in this way, the assembly and disassembly of the air duct rear cover is convenient, after-sales maintenance is convenient, and costs are saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 4 is a three-dimensional diagram of an air duct assembly in one embodiment of the present invention.

[0017] Figure 2 It is a three-dimensional view of the air duct assembly from another angle in one embodiment of the present invention.

[0018] Figure 3 It is an exploded view of the air duct front cover and the air duct foam plate in one embodiment of the present invention.

[0019] Figure 4 It is a schematic diagram of assembling the air duct rear cover in one embodiment of the present invention.

[0020] Figure 5 yes Figure 4 Magnified view of the structure in the middle circle.

[0021] Figure 6 It is a schematic diagram of a disassembled air duct rear cover in another embodiment of the present invention.

[0022] Figure 7 is a side cross-sectional view of an air duct assembly in one embodiment of the present invention.

[0023] Figure 8 yes Figure 7 Magnified view of the structure in the middle circle.

[0024] Fig. 9 1 is a perspective view of a sealing connector according to an embodiment of the present invention.

[0025] Fig.10 yes Fig. 9 Schematic diagram from another angle. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0027] As used herein, terms indicating spatial relative positions such as "upper," "above," "lower," and "below" are used for the purpose of convenience to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. Terms of spatial relative position may be intended to include different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, if the device in the figure is turned over, units described as being "below" or "beneath" other units or features will be located "above" the other units or features. Thus, the exemplary term "below" can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein interpreted accordingly.

[0028] See also Figure 1-2 , which is a schematic structural diagram of an air duct assembly 100 provided in one embodiment of the present invention.

[0029] The air duct assembly 100 includes an air duct front cover 30, a sealing connector 50 rotatably connected to the rear side of the air duct front cover 30, and an air duct rear cover 10 disposed at the rear side of the air duct front cover 30 and assembled with the sealing connector 50. The sealing connector 50 and the opposite sides of the air duct front cover 30 have a plug-in structure that plugs in and out with each other, so that when the sealing connector 50 rotates a certain angle relative to the air duct front cover 30, the air duct rear cover 10 is plugged and fixed with the sealing connector 50, and after being plugged and fixed, it rotates toward the air duct front cover 30 to be fixed with the air duct front cover 30, which is convenient for assembly and disassembly.

[0030] Specifically, the sealing connector 50 can be rotated a distance away from the air duct front cover 30, so that the air duct rear cover 10 can be assembled with the sealing connector 50 first, and then rotated together to be fixed on the air duct front cover 30, so as to realize the separate assembly of the air duct rear cover 10; the air duct assembly 100 can be directly assembled into or disassembled from the air duct rear cover 10 without disassembling the air duct front cover 30 or other components first.

[0031] The air duct assembly 100 further includes an air duct foam plate 20 disposed in the air duct front cover 30 and a sealing foam 40 disposed on the air duct foam plate 20. The air duct foam plate 20 is provided with an air guide cavity 201, and the air duct rear cover 10 is connected with the air guide cavity 201 in the up-down direction to form a complete air guide channel; the sealing connector 50 covers a portion of the air guide cavity 201 adjacent to the air duct rear cover 10, and the bottom end of the sealing connector 50 is plugged with the air duct rear cover 10, and the sealing foam 40 covers the other portion of the air guide cavity 201 away from the air duct rear cover 10, and the sealing foam 40 covers the surface of the sealing connector 50.

[0032] In this way, the close connection between the air duct rear cover 10 and the air guide cavity 201 does not need to be formed by pasting the sealing foam 40, otherwise the sealing foam 40 will be pasted to the air duct rear cover 10 and the air duct foam board 20 located below the air guide cavity 201. Therefore, when the after-sales personnel subsequently repair the air duct assembly 100, they need to clean the air duct sealing foam and / or sealing strip before completely disassembling the inside of the air duct assembly 100, and it is also easy to damage the air duct foam board 20 and the air duct rear cover 10 parts. After the subsequent repair, the sealing foam and / or sealing strip need to be re-applied. The after-sales service is currently not equipped with sealing foam and / or sealing strips, because the shapes and materials of these materials are different between each refrigerator model or refrigerator brand, and it is impossible to achieve uniformity, and the after-sales maintenance cost will be very high. At present, once the internal electrical components of this air duct assembly 100 are damaged, the after-sales service will directly replace the entire air duct assembly, resulting in high after-sales maintenance costs.

[0033] In the present application, the sealing foam 40 does not need to be adhered to the air duct rear cover 10. The upper part of the sealing connector 50 covers the air guide cavity 201, and the bottom abuts against the air duct rear cover 10, thereby connecting the air guide cavity 201 and the air duct rear cover 10. The sealing foam 40 is adhered from the air guide cavity 201 to the surface of the sealing connector 50, and the sealing foam 40 is adhered to the surface of the sealing connector 50. Figure 7-8 As shown, when the air duct rear cover 10 is disassembled in this way, the air duct rear cover 10 can be directly removed from the sealing connector 50 without removing the sealing foam 40 and without damaging the sealing foam 40 and the air duct foam plate 20, thereby saving maintenance costs.

[0034] In a preferred embodiment, the air duct foam plate 20 includes a first foam plate 21 located at the top and forming an air guide cavity 201, and a second foam plate 22 located below the first foam plate 21 and corresponding to the air duct rear cover 10. The air duct rear cover 10 covers the second foam plate 22. The first foam plate 21 and the second foam plate 22 are separately arranged, or they can be formed as one piece and directly assembled to the air duct front cover 30. The air duct front cover 30 includes a first front cover 31 located at the top and a second front cover 32 located at the bottom. The first front cover 31 and the second front cover 32 are formed as one piece, so that the assembly is simple. The first front cover 31 and the second front cover 32 of the air duct assembly 100 cannot be disassembled. In this way, the upper and lower parts of the air duct assembly 100 cannot be disassembled separately, but the air duct rear cover 10 can still be assembled and disassembled separately. Of course, even if the first front cover 31 and the second front cover 32 are snap-fitted, the upper and lower parts of the air duct assembly 100 can be disassembled separately, and there is no need to perform the upper and lower disassembly steps, and the air duct rear cover 10 can be directly removed, thereby optimizing the disassembly method and facilitating maintenance.

[0035] Preferably, the sealing connector 50 includes a connecting wall 51 covering the air guiding cavity 201 and a step wall 52 disposed at one end of the connecting wall 51 close to the air duct rear cover, the step wall 52 is connected to the connecting wall 51 to form a step surface 520 facing away from the air duct rear cover 10, and the sealing foam 40 is attached to the connecting wall 51 and the bottom end abuts against the step surface 520. In this way, the sealing foam 40 will not stick to the step wall 52, preventing the sealing foam 40 from sticking downward to the air duct rear cover 10.

[0036] Combination Figure 9-10 As shown, the sealing connector 50 is provided with a rotating shaft 54 ​​and a limiting protrusion 53 on both sides of the connecting wall 51, and the air duct front cover 30 is provided with a rotating groove cooperating with the rotating shaft 54 ​​and a snap groove cooperating with the limiting protrusion 53, so that the sealing connector 50 has a rotating state that can rotate relative to the air duct front cover 30 or a fixed state that is snap-fixed relative to the air duct front cover 30.

[0037] Specifically, refer to Figure 4-6 As shown, during assembly, the sealing connector 50 is rotatably connected to the air duct front cover 30 through the rotating shaft 54. The sealing connector 50 and the air duct front cover 30 are at a certain angle, and the sealing connector 50 is in a rotatable state. Note that at this time, the limiting protrusion 53 cannot be snapped into place with the snap groove of the air duct front cover 30. The air duct rear cover 10 with the second sealing strip 80 applied is inserted into the slot 501 of the sealing connector 50. It must be inserted into place, and then the air duct rear cover 10 and the sealing connector 50 are rotated around the rotating shaft 54 ​​and toward the air duct front cover 30, so that the limiting protrusion 53 is snapped into the snap groove of the air duct front cover 30. At this time, the sealing connector 50 is in a fixed state. The air duct front cover 30 is provided with a snap-on wall 311, the limiting protrusion is snap-on and limited on the snap-on wall 311, the snap-on groove is formed on the snap-on wall 311, and when the sealing connector 50 is in a fixed state, the sealing connector 50 and the air duct front cover 30 are snap-on and limited along the up and down directions.

[0038] A slot 501 is formed between the step wall 51 and the connecting wall 52, which is open toward the air duct rear cover 10, for assembly of the air duct rear cover 10, that is, the bottom end of the sealing connector 10 is connected and matched with the air duct rear cover 10. Buckling protrusions 13 are provided on both sides of the air duct rear cover 10, and the air duct front cover 30 is provided with a buckling groove matched with the buckling protrusion 13. Specifically, the buckling protrusion 13 cannot be separated from the buckling groove in the up-down direction, so the air duct rear cover 10 cannot be removed from the air duct front cover 30 in the up-down direction, and the buckling protrusion 13 can be separated from the buckling groove in the front-back direction. However, the air duct rear cover 10 is plugged into the slot 501 and cannot be directly disassembled in the front-back direction.

[0039] Therefore, when disassembling, the duct rear cover 10 is rotated in the direction away from the duct front cover 30, so that the retaining protrusion 13 disengages from the retaining groove, driving the sealing connector 50 to rotate in the direction away from the duct front cover 30, so that the snap protrusion 53 disengages from the snap groove; after the duct rear cover 10 and the sealing connector 50 are rotated to a certain angle relative to the duct front cover 30, the duct rear cover 10 is pulled out from the slot 501.

[0040] Specifically, by rotating the air duct rear cover 10 and the sealing connector 50 together, the limiting protrusion 53 and the buckle wall 311 are loosened, and the holding protrusion 13 and the air duct front cover 30 are loosened, so that the air duct rear cover 10 and the air duct front cover 30 are released from the fixed state, and the sealing connector 50 is released from the fixed state, and only cooperates with the air duct front cover 30 through the rotating shaft 54; then, the air duct rear cover 10 rotated to the inclined state is pulled out from the slot 501 of the sealing connector 50 along the inclined direction for a certain distance, and the air duct rear cover 10 can be easily removed. In this way, there is no need to disassemble the air duct front cover 30 and / or the air duct foam plate 20, no matter whether the air duct front cover 30 is split or integrated, or whether the air duct foam plate 20 is integrated or split, the air duct rear cover 10 can be directly removed from the air duct assembly 100 alone, so as to facilitate maintenance or replacement of electrical components.

[0041] It should be noted that in this embodiment, during disassembly, the surface of the sealing connector 50 is adhered with the sealing foam 40. After the duct rear cover 10 and the sealing connector 50 are rotated a certain angle relative to the duct front cover 30, the end of the sealing foam 40 will also rotate along the axial position of the rotating shaft 54, which will not cause adhesion and tearing between the sealing foam 40 and the duct foam plate 20.

[0042] The air duct foam plate 20 includes at least two first foam plates 21 arranged in the transverse direction, and the two first foam plates 21 have the same structure and are fixed to the two sides of the first front cover 31 in the transverse direction at intervals. The opening of each first foam plate 21 facing away from the first front cover 31 forms the air guide cavity 201. The sealing foam 40 is applied to the surface of the first foam plate 21 to cover the air guide cavity 201 and seal and insulate the gas in the air guide cavity 201. The first foam plate 21 is provided with a plurality of air dispersing ports 202 connected to the air guide cavity 201 at the end in the transverse direction, and the gas in the air guide cavity 201 can gradually flow out in the transverse direction through the air dispersing ports 202.

[0043] Preferably, the side of the sealing foam 40 facing the air guide cavity 201 is an adhesive surface, and the sealing foam 40 is adhered to the air duct foam plate 20 and the sealing connector 50. Specifically, the sealing foam 40 is a foam tape, which has good adhesiveness and is convenient for fixation on the one hand, and has good thermal insulation and sealing properties on the other hand. The sealing foam 40 is adhered to the air duct foam plate 20 from top to bottom to cover the air guide cavity 201. When it is close to the air duct rear cover 10, the air duct foam plate 20 is provided with a sealing connector 50 to cover the air guide cavity 201. Therefore, the sealing foam 40 is slightly bent and adhered to the surface of the sealing connector 50, and will not contact the air duct rear cover 10, so as to prevent the air duct rear cover 10 from being adhered. At the same time, the air duct rear cover 10 and the air guide cavity 201 are sealed and connected, so that the gas can only flow out from the set air outlet 202.

[0044] Specifically, refer to Figure 3 As shown, the air duct front cover 30 may be integrated with wiring and several electrical components, which will not be described in detail here; similarly, the air duct foam board 20 may also be integrated with wiring and several electrical components, such as the fan 70, the sterilization module 71, etc., which will not be described in detail here, and the assembled air duct front cover 30 and the assembled air duct foam board 20 only need to be snap-fastened as a whole. After the air duct foam board 20 is assembled into the air duct front cover 30 as a whole, the sealing connector 50 is assembled to the air duct front cover 30 through the rotating shaft 54, and then the air duct rear cover 10 is assembled and the sealing foam 40 is further attached.

[0045] The air duct rear cover 10 shields the second foam plate 22 corresponding to the air duct foam plate 20, and forms a receiving cavity 220 between the air duct rear cover 10 and the second foam plate 22. The air duct assembly 100 includes a fan assembly disposed in the receiving cavity 220, such as a fan 70 and a sterilization module 72. The receiving cavity 220 is used to install the fan assembly, so that after removing the air duct rear cover 10, it is convenient to repair the fan assembly or more other components.

[0046] The second sealing strip 80 is arranged on the surface of the air duct rear cover 10 away from the air duct front cover 30. The second sealing strip 80 is adhered to the air duct rear cover 10 and will not be adhered to the second foam board 22. In this way, when disassembling, there is no need to remove the second sealing strip 80, and the second foam board 22 and the air duct rear cover 10 will not be damaged. More specifically, the air duct rear cover 10 can be adhered to other more sealing and heat-insulating parts. It should be noted that the second sealing strip 80 and / or more adhesive parts with sealing and heat-insulating functions should be adhered to the air duct rear cover 10 before being assembled with the sealing connector 50 and the air duct front cover 30. In this way, the disassembly of the air duct rear cover 10 is convenient and damage caused by disassembly of adhesive parts is prevented.

[0047] In the present invention, on the one hand, when there is a problem with the air duct assembly 100 and the air duct rear cover 10 needs to be removed, there is no need to remove the sealing foam 40 and the second sealing strip 80, and it can be directly pulled out from the sealing connector 50, so that the sterilization module 72, the fan 70 and / or other components inside are directly exposed, and can be directly repaired or replaced. On the other hand, the air duct rear cover 10 is plugged into the sealing connector 50, and the sealing connector 50 is rotatable, so that the air duct rear cover 10 can be directly rotated and removed without disassembling the air duct front cover 30 and / or the air duct foam board 20, thereby optimizing the disassembly steps, facilitating maintenance, and saving costs.

[0048] Preferably, the air duct rear cover 10 is provided with an air outlet 101 corresponding to the air guide cavity 201, and the air duct rear cover 10 is provided with an air guide wall 11 for cooperating with the slot 501. The top edge of the air guide wall 11 is sleeved with a first sealing strip 60 and is plugged into the slot 501 together, and the port at the top edge corresponding to the air guide wall 11 is formed as the air outlet 101. The air duct rear cover 10 and the sealing connector 50 are plugged and assembled to form a seal and are easy to disassemble.

[0049] Specifically, the air guide wall 11 protrudes forward relative to the main body of the air duct rear cover 10 , the air outlet 101 is formed at the end of the air guide wall 11 , and the first sealing strip 60 strengthens the sealing.

[0050] Preferably, the first foam plate 21 is provided with an air guiding cavity 201 to form a first air guiding channel, the air duct rear cover 20 shields the second foam plate 22 and forms a second air guiding channel between the second foam plate 22, the air outlet 101 is connected to the first air guiding channel and the second air guiding channel; the second foam plate is formed with the second air guiding channel extending from the fan 70 to the air outlet 101 in the receiving cavity 220, and the second foam plate 22 is provided with a gradually inclined air guiding surface 221 corresponding to the second air guiding channel, which is conducive to guiding the gas at the fan 70 to the air outlet 101, and then into the air guiding cavity 501. Obviously, the second air guiding channel is connected to the first air guiding channel to form the entire air guiding channel.

[0051] The air duct foam plate 20 includes at least two first foam plates 21 arranged in the transverse direction, and the sealing foam 40 is adhered to the first foam plates 21. Each of the first foam plates 21 is away from the opening of the air duct front cover and forms the air guide cavity. The sealing connector 50 seals the connection between the air outlet 101 and the air guide cavity 201 to ensure that the gas is transmitted along the air guide channel without air leakage.

[0052] Specifically, a step is provided at the end of the first foam plate 21, and the sealing connector 50 is provided at the step, and the sealing foam 40 is pasted on the surface, and the colloid of the sealing foam 40 can penetrate into the step and stick to the sealing connector 50, making the sealing connector 50 more stable. The port of the air guide wall 11 can also be set in a step shape at the same time, so that the connecting wall 51 of the sealing connector 50 abuts against the step, so that it can not only play a limiting role, but also further prevent gas leakage.

[0053] The present invention also protects a refrigerator, comprising a box and the above-mentioned air duct assembly 100, wherein the air duct assembly 100 is arranged on the rear wall of the box. A second sealing strip 80 is pasted on the side of the air duct rear cover 10 facing the rear wall of the box, and the second sealing strip 80 abuts against the rear wall of the box and the thickness is reduced after abutment to achieve a tight fit.

[0054] Specifically, the box body includes an inner liner, the rear wall of the box body is the rear wall of the inner liner, the air duct assembly 100 is arranged on the rear wall of the inner liner, the sealing foam 40 is gap-matched with the rear wall of the inner liner, and the second sealing strip 80 is tightly matched with the rear wall of the inner liner. When the air duct assembly 100 needs to be repaired, the screws and / or buckles fixedly matched with the rear wall of the inner liner are removed, the air duct assembly 100 is taken out, and the air duct rear cover 10 is directly removed, and the electrical components and / or fan assembly can be directly replaced on the air duct foam board 20, which is convenient and saves after-sales maintenance costs.

[0055] The beneficial effects of the present invention are as follows: the sealing connector 50 is configured to be rotatably connected to the duct front cover 20, and the duct rear cover 10 can be first assembled with the sealing connector 50, and then rotated together to be fixed to the duct front cover 30, so as to realize the separate assembly of the duct rear cover 10; or, the duct rear cover 10 is first rotated together with the sealing connector 50 to be released from the duct front cover 30, and the duct rear cover 10 is then removed from the sealing connector 50, thereby optimizing the assembly and disassembly of the duct rear cover 10; the sealing foam 40 covers the surface of the sealing connector 50 from the air guide cavity 201, and does not need to be adhered to the duct rear cover 10. In this way, when disassembling the duct rear cover 10, the duct rear cover 10 can be directly removed from the sealing connector 50 without removing the sealing foam 40, which is convenient for maintenance and will not damage the sealing foam 40 and the duct foam board 20, thereby saving maintenance costs.

[0056] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0057] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air duct assembly, characterized in that: It includes a duct front cover, a sealing connector rotatably connected to the rear side of the duct front cover, and a duct rear cover arranged on the rear side of the duct front cover and assembled with the sealing connector. The sealing connector and the duct cover have plug-in structures on opposite sides that plug into and fit with each other, so that when the sealing connector is rotated a certain angle relative to the duct front cover, the duct rear cover is plugged and fixed with the sealing connector, and after being plugged and fixed, it rotates toward the duct front cover to be fixed to the duct front cover.

2. The air duct assembly according to claim 1, characterized in that: The sealing connector includes a connecting wall, and a rotating shaft and a snap protrusion are provided on both sides of the connecting wall. The front cover of the air duct is provided with a rotating groove cooperating with the rotating shaft and a snap groove cooperating with the snap protrusion, so that the sealing connector has a rotating state that can rotate relative to the front cover of the air duct or a fixed state that is relatively fixed to the front cover of the air duct.

3. The air duct assembly according to claim 2, characterized in that: The sealing connector includes a step wall arranged on the connecting wall near the air duct rear cover, a slot opening toward the air duct rear cover is formed between the step wall and the connecting wall for assembly of the air duct rear cover, buckling protrusions are arranged on both sides of the air duct rear cover, and the air duct front cover is provided with a buckling groove cooperating with the buckling protrusions.

4. The air duct assembly according to claim 3, characterized in that: The duct front cover includes an duct foam plate, and the duct foam plate includes a first foam plate located above and a second foam plate located below the first foam plate. The first foam plate is provided with an air guide cavity to form a first air guide channel. The sealing connector covers part of the air guide cavity. The duct rear cover blocks the second foam plate and forms a second air guide channel between the second foam plate. The duct rear cover is provided with an air outlet facing the air guide cavity. The air outlet is connected to the air guide cavity, and further connected to the first air guide channel and the second air guide channel.

5. The air duct assembly according to claim 4, characterized in that: The air duct rear cover is provided with an air guide wall for cooperating with the slot, the top edge of the air guide wall is sleeved with a first sealing strip and is jointly plugged into the slot, and the port at the corresponding top edge of the air guide wall forms the air outlet.

6. The air duct assembly according to claim 5, characterized in that: The air duct assembly includes a sealing foam for covering the air guide cavity. The sealing connector covers a portion of the air guide cavity adjacent to the air duct rear cover. The sealing foam covers other portions of the air guide cavity away from the air duct rear cover, and the sealing foam covers the surface of the sealing connector.

7. The air duct assembly according to claim 6, characterized in that: The side of the sealing foam facing the air duct foam plate is an adhesive surface, and the sealing foam covers the surface of the air guide cavity and the sealing connector.

8. The air duct assembly according to claim 7, characterized in that: The step wall is connected to the connecting wall to form a step surface facing away from the rear cover of the air duct, and the sealing foam is adhered to the connecting wall with the bottom end thereof abutting against the step surface.

9. The air duct assembly according to claim 6, characterized in that: The air duct foam plate includes at least two first foam plates arranged in the transverse direction, the sealing foam is adhered to the first foam plates, each of the first foam plates is away from the opening of the air duct front cover and forms the air guide cavity, and the sealing connector seals the connection between the air outlet and the air guide cavity.

10. A refrigerator, characterized in that: It comprises a box body and an air duct assembly as described in any one of claims 1 to 9, wherein the air duct assembly is arranged on the rear wall of the box body.

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