Air duct assembly and refrigerator

Abstract

The invention discloses an air duct assembly and a refrigerator. The air duct assembly comprises an air duct foam plate, sealing foam arranged on the air duct foam plate and an air duct rear cover arranged on the air duct foam plate and located on the same side with the sealing foam. The air duct foam plate is provided with an air guide cavity, and the air duct rear cover communicates with the air guide cavity in the vertical direction. The air duct assembly further comprises a sealing connecting piece matched with the air duct foam plate, the sealing connecting piece covers part of the air guide cavity close to the air duct rear cover, the bottom end of the sealing connecting piece is connected and matched with the air duct rear cover, and the sealing foam covers the other part of the air guide cavity away from the air duct rear cover and covers the surface of the sealing connecting piece. The sealing foam covers the sealing connecting piece, and the sealing connecting piece is connected with the air duct rear cover, so that the air duct rear cover is convenient to disassemble.

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 comprising: an air duct foam plate, a sealing foam arranged on the air duct foam plate, and an air duct back cover arranged on the air duct foam plate and located on the same side as the sealing foam; the air duct foam plate is provided with an air guide cavity, and the air duct back cover is connected to the air guide cavity along the up and down directions; the air duct assembly also includes a sealing connector arranged in cooperation with the air duct foam plate, the sealing connector covers part of the air guide cavity adjacent to the air duct back cover, and the bottom end of the sealing connector is connected to the air duct back cover, the sealing foam covers other parts of the air guide cavity away from the air duct back cover, and the sealing foam covers the surface of the sealing connector.

[0006] 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 is adhered to the surface of the air guide cavity and the sealing connector.

[0007] As a further improvement of one embodiment of the present invention, the sealing connector includes a connecting wall covering the air guide cavity and a step wall arranged at one end of the connecting wall close to the air duct rear cover, the step wall is connected to the connecting wall to form a step surface facing away from the air duct rear cover, and the sealing foam is adhered to the connecting wall and the bottom end abuts against the step surface.

[0008] As a further improvement of one embodiment of the present invention, a slot opening toward the air duct rear cover is formed between the step wall and the connecting wall, the air duct rear cover is provided with an air guide wall cooperating with the slot, the top edge of the air guide wall is provided with a first sealing strip and inserted into the slot together, the port at the top edge of the air guide wall corresponding to the air guide wall is formed as an air outlet, and the air outlet is connected to the air guide cavity.

[0009] As a further improvement of one embodiment of the present invention, the duct assembly includes an air duct front cover, the sealing connector is a plastic part and is fixed to the air duct front cover, the sealing connector is provided with snap parts on both sides of the connecting wall, the air duct front cover is provided with a snap wall cooperating with the snap part, and the snap part is a plurality of limiting protrusions arranged along the up and down directions.

[0010] As a further improvement of one embodiment of the present invention, the duct assembly includes an air duct front cover, the sealing connector is a plastic part and is rotatably arranged on the air duct front cover; the sealing connector is provided with a rotating shaft and a limiting protrusion on both sides of the connecting wall, and the air duct front cover is provided with a rotating groove cooperating with the rotating shaft and a snap groove cooperating with the limiting protrusion.

[0011] 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 horizontal 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, the bottom end of the air guide cavity is connected to the air outlet to form a first air guide channel, and the sealing connector seals the connection between the air outlet and the air guide cavity.

[0012] As a further improvement of one embodiment of the present invention, the air duct foam plate includes a second foam plate arranged below the first foam plate, the air duct back cover covers the second foam plate, and a receiving cavity is formed between the second foam plate, and the air duct component includes a fan component arranged in the receiving cavity.

[0013] As a further improvement of one embodiment of the present invention, the second foam board also forms a second air guide channel extending from the fan to the air outlet in the accommodating cavity, and the second foam board is arranged as a gradually inclined air guide surface corresponding to the second air guide channel.

[0014] As a further improvement of one embodiment of the present invention, the air duct front cover includes a first front cover located at the top and a second front cover located at the bottom, the first front cover is assembled and fixed with a first foam board, and the second front cover is assembled and fixed with a second foam board; the first foam board and the second foam board are separately arranged, or the first foam board and the second foam board are formed integrally; the first front cover is fixed with a snap fastener, or the first front cover and the second front cover are formed integrally.

[0015] 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.

[0016] As a further improvement of an embodiment of the present invention, a second sealing strip is provided on one side of the air duct rear cover facing the rear wall of the box body, and the second sealing strip is adhered to the air duct rear cover and abuts against the rear wall of the box body.

[0017] Compared with the prior art, the present invention provides an air duct assembly, in which the sealing foam is adhered to the surface of the sealing connector, and the bottom end of the sealing connector is connected to the air duct back cover. When it needs to be disassembled and repaired, the air duct back cover can be removed from the sealing connector without removing the sticky sealing foam. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 4 is a three-dimensional diagram of an air duct assembly in one embodiment of the present invention.

[0019] Figure 2 It is a three-dimensional view of the air duct assembly from another angle in one embodiment of the present invention.

[0020] Figure 3 It is a schematic diagram of the disassembly of the upper and lower parts of the air duct assembly in one embodiment of the present invention.

[0021] Figure 4 yes Figure 3 Schematic diagram from another angle.

[0022] Figure 5 It is a schematic diagram of removing the sealing foam from the upper half of the air duct assembly in one embodiment of the present invention.

[0023] Figure 6 yes Figure 5 Magnified view of the structure in the middle circle.

[0024] Figure 7 yes Figure 5 Schematic diagram of further disassembly.

[0025] Figure 8 is an exploded view of the lower half of the air duct assembly in one embodiment of the present invention.

[0026] Fig. 9 yes Figure 8 Schematic diagram from another angle.

[0027] Fig.10 is a side cross-sectional view of an air duct assembly in one embodiment of the present invention.

[0028] Fig.11 yes Fig.10 Magnified view of the structure in the middle circle.

[0029] Fig.12 1 is a perspective view of a sealing connector according to an embodiment of the present invention.

[0030] Fig.13 yes Fig.12 Schematic diagram from another angle.

[0031] Fig.14 It is a three-dimensional diagram of the air duct front cover and the air duct foam plate in another embodiment of the present invention.

[0032] Fig.15 It is a schematic diagram of assembling the air duct rear cover in another embodiment of the present invention.

[0033] Fig.16 yes Fig.15 Magnified view of the structure in the middle circle.

[0034] Fig.17 It is a schematic diagram of a disassembled air duct rear cover in another embodiment of the present invention. DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] See also Figure 1-4 , which is a schematic structural diagram of an air duct assembly 100 provided in one embodiment of the present invention.

[0038] The air duct assembly 100 includes an air duct foam plate 20, a sealing foam 40 disposed on the air duct foam plate 20, and an air duct rear cover 10 disposed on the air duct foam plate 20 and located on the same side as the sealing foam 40. 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 air duct assembly 100 also includes a sealing connector 50 provided in cooperation with the air duct foam plate 20, 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 connected and cooperated with the air duct rear cover 10, the sealing foam 40 covers other portions 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.

[0039] 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 gluing the sealing foam 40, otherwise the sealing foam 40 will be glued 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 up the air duct sealing foam (adhesive) and / or sealing strip (adhesive) 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.

[0040] In the present application, a sealing connector 50 is provided, and the sealing foam 40 does not need to be adhered to the air duct back cover 10. The upper part of the sealing connector 50 covers the air guide cavity 201, and the bottom is abutted against the air duct back cover 10, thereby connecting the air guide cavity 201 and the air duct back cover 10. The sealing foam 40 is adhered to the surface of the sealing connector 50 from the air guide cavity 201. When the air duct back cover 10 is disassembled, the air duct back cover 10 can be directly removed from the sealing connector 50. There is no need to remove the sealing foam 40, and the sealing foam 40 and the air duct foam board 20 will not be damaged, thereby saving maintenance costs.

[0041] 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 first foam plate 21 and the second foam plate 22 are separately arranged, 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 separately arranged and fixedly connected by snaps, for example, through the cooperation of the snap protrusion and the snap groove, the first front cover 31 is assembled and fixed with the first foam plate 21, and the second front cover 32 is assembled and fixed with the second foam plate 22. In this way, it is convenient to disassemble and replace.

[0042] In other embodiments, the first foam plate 21 can be integrally formed with the second foam plate 22, and the first front cover 31 and the second front cover 32 can also be integrally formed. In this way, the air duct foam plate 20 can be directly assembled to the air duct front cover 30 as a whole. The second embodiment will be described in detail.

[0043] Specifically, the air duct foam plate 20 includes at least two first foam plates 21 arranged in the transverse direction, 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, and each of the first foam plates 21 is opened away from the first front cover 31 and forms the air guide cavity 201, and 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.

[0044] Preferably, the sealing foam 40 has a side facing the air guide cavity 201 as 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 for easy fixation and good thermal insulation and sealing properties. Figure 5-7 As shown in 12-13, the sealing foam 40 is pasted on 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 back 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 pasted to the surface of the sealing connector 50, and will not contact the air duct back cover 10, thereby preventing the air duct back cover 10 from sticking. At the same time, the sealed connection between the air duct back cover 10 and the air guide cavity 201 is ensured, so that the gas can only flow out from the set air dispersion outlet 202.

[0045] 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.

[0046] Preferably, a slot 501 opening toward the air duct rear cover 10 is formed between the step wall 51 and the connecting wall 52 for plugging into 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 .

[0047] Preferably, the sealing connector 50 is a plastic part fixed to the air duct front cover 30, and the sealing connector 50 is provided with a snap-on portion 53 on both sides of the connecting wall 51, and the air duct front cover 30 is provided with a snap-on wall 311 cooperating with the snap-on portion 53, and the snap-on portion 53 is a plurality of limiting protrusions arranged along the up and down directions.

[0048] Specifically, refer to Figure 5-7As shown, after the first foam plate 21 is assembled to the first front cover 31, the sealing connector 50 is assembled to the first front cover 31, and the buckle portion 53 includes three limiting protrusions, wherein the limiting protrusion at the lowest end can be formed on the step wall 52 to strengthen the abutment. The buckle wall 311 is a vertical wall provided on the first front cover 31, and a buckle groove 312 is provided in the middle position. The buckle wall 311 is clamped between the limiting protrusions located at the upper and lower ends, so that the limiting protrusions located at the upper and lower ends cannot move in the up and down direction, and at the same time, the limiting protrusion located in the middle is clamped in the buckle groove 312. Then the sealing foam 40 is pasted to the surface of the first foam plate 21 and the sealing connector 50, and the upper half of the air duct assembly 100 is assembled.

[0049] The air duct rear cover 10 shields the second foam plate 22, and a receiving cavity 220 is formed 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. 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 other components.

[0050] Continue to participate Figure 8-9 As shown, the air duct assembly 100 includes several electrical components, such as a sensor 73, etc. After assembling the several electrical components into the second front cover 32 according to the wiring groove of the second front cover 32, the second front cover 32 is then installed to the rear of the second foam board 22. The air duct assembly 100 also includes a fan 70, a damper 71 and a sterilization module 72 installed on the second foam board 22. The fan assembly includes the damper 71, the sterilization module 72, the fan 70 and / or other more components. The fan 70, the damper 71 and the sterilization module 72 are still assembled into the second foam board 22, i.e., the receiving cavity 220 according to the wiring groove of the second foam board 22. Here, the present invention does not limit the assembly sequence and assembly method of some electrical components and motor components of the air duct front cover 30 and the air duct foam board 20. In actual installation, they can be adjusted due to the differences in actual structure and different components.

[0051] Preferably, the surface of the air duct rear cover 10 facing away from the second front cover 32 is provided with a second sealing strip 80, which 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 no damage will be caused to the second foam board 22 and the air duct rear cover 10. 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 combined with the second front cover 22. In this way, the disassembly of the air duct rear cover 10 is convenient and damage caused by disassembly of adhesive parts is prevented.

[0052] The air duct rear cover 10 is used to cover the second foam board 22. When the electrical components in the second foam board 22 are assembled, the air duct rear cover 10 is also assembled, and the assembled air duct rear cover 10 is installed on the side of the second foam board 22 away from the second front cover 32. In this way, the lower half of the air duct assembly 100 is assembled. Finally, the upper half and the lower half of the air duct assembly 100 are aligned and snap-connected to form a complete air duct assembly 100. In this embodiment, this is achieved by snap-fitting the first front cover 31 and the second front cover 32.

[0053] The key point of this case is that when a problem occurs with the air duct assembly 100 and the air duct back cover 10 needs to be removed, there is no need to scrape off the sealing foam 40 and the second sealing strip 80, and they can be directly pulled out from the sealing connector 50, thereby directly exposing the damper 71, sterilization module 72, fan 70 and / or other components inside, which can be directly repaired or replaced.

[0054] Preferably, the air duct rear cover 10 is provided with an air guide wall 11 matched with the slot, the top edge of the air guide wall 11 is sleeved with a first sealing strip 60 and inserted into the slot 501 together, and the port at the corresponding top edge of the air guide wall 11 is formed as an air outlet 101, and the air outlet 101 is connected to the air guide cavity 201. The air duct rear cover 10 and the sealing connector 50 are plug-in assembled to form a seal and are easy to disassemble.

[0055] Specifically, in combination with 10-11, the air duct back cover 10 is provided with an air guide wall 11 protruding forward relative to the main body of the air duct back cover 10 near the sealing connector 50 and facing the air guide cavity 201, the air outlet 101 is formed at the top edge port of the air guide wall 11, and the first sealing strip 60 is sleeved on the air guide wall 11 to strengthen the sealing.

[0056] Preferably, the bottom end of the air guiding cavity 201 is connected to the air outlet 101 to form a first air guiding channel, and the sealing connector 50 seals the connection between the air outlet 101 and the air guiding cavity 201 to ensure that the gas is transmitted along the first air guiding channel without air leakage.

[0057] 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.

[0058] Preferably, the second foam plate further forms a 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 to 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.

[0059] 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.

[0060] 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 in gap with the rear wall of the inner liner, and the second sealing strip 80 is in close contact 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, and the air duct assembly 100 is taken out. In order to facilitate the removal of the air duct rear cover 10, the buckles of the upper and lower parts of the air duct assembly 100 are first released, and then the air duct rear cover 10 of the lower part is removed, and the electrical components and / or the fan assembly can be directly replaced on the second foam board 22, which is convenient and saves after-sales maintenance costs.

[0061] In the second embodiment of this case, Fig.14 As shown, the air duct front cover 30 is formed in one piece, the air duct foam plate 20 is also formed in one piece, and the sealing connector 50 is slightly different in structure to facilitate the disassembly of the air duct rear cover 10, and the other structures are the same. The following briefly describes the assembly process and the disassembly process.

[0062] The air duct front cover 30 and the air duct foam plate 20 are formed in one piece, which is more convenient for assembly. First, the relevant electrical components, such as sensors, are assembled into the air duct front cover 30; the fan components, such as the fan 70, the damper 71 and the sterilization module 72 are installed into the air duct foam plate 20; the assembled air duct foam 20 is assembled into the air duct front cover 30; then the air duct rear cover 10 is assembled. It should be noted that the adhesive second sealing strip 80 of the air duct rear cover 10 cannot be adhered to the air duct foam plate 20 to affect the disassembly. Similarly, the present invention does not limit the above-mentioned assembly steps and assembly methods. In actual installation, they can be adjusted considering the differences between the actual structure and different components.

[0063] The focus of the second embodiment is how to assemble and disassemble the air duct rear cover 10 since the upper and lower parts of the air duct assembly 100 cannot be disassembled.

[0064] Preferably, the sealing connector 50 is a plastic part and is rotatably fixed to the air duct front cover 30; 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.

[0065] Specifically, refer to Figure 15-17 As shown, during assembly, the sealing connector 50 is installed on the air duct front cover 30 through the rotating shaft 54. Note that at this time, the limiting protrusion 53 should not be locked in place first. 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 in place, and then the air duct rear cover 10 and the sealing connector 50 are rotated around the rotating shaft 54 ​​so that the limiting protrusion 53 is locked on the air duct front cover 30. The air duct front cover 30 is provided with a snap wall 311, the limiting protrusion abuts against the snap wall 311, the snap groove is formed on the snap wall 311, and the sealing connector 50 and the air duct front cover 30 abut against each other in the up and down directions.

[0066] During disassembly, the steps are opposite to those during assembly. First, the limiting protrusion 53 is loosened from the buckle wall 311, and the rotating shaft 54 ​​is used to rotate the air duct rear cover 10 and the sealing connector 50 to a certain angle. At this time, the sealing foam 40 is also rotated along the axis near the end (i.e., the axis position of the rotating shaft 54), which will not cause adhesion and tearing between the sealing foam 40 and the air duct foam plate 20. Then, the air duct rear cover 10 can be pulled out a certain distance, and the air duct rear cover 10 can be easily removed for maintenance or replacement of electrical components.

[0067] The beneficial effects of the present invention are as follows: a sealing connector 50 is provided, and the sealing foam 40 is adhered to 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 the duct rear cover 10 is disassembled, the duct rear cover 10 can be directly removed from the sealing connector 50, and there is no need to remove the sealing foam 40, which is convenient for maintenance and will not damage the sealing foam 40 and the duct foam plate 20, saving maintenance costs; the duct front cover 30 and the duct foam plate 20 can be formed in one piece or in parts; the sealing connector 50 is provided with a slot 501 to plug the air outlet 101 and the first sealing strip 60, so as to realize the sealing connection between the air guide cavity 201 and the air outlet 101; the second sealing member 80 is adhered to the duct rear cover 10, and the second sealing member 80 will not be adhered to the second foam plate 22, so as to facilitate the disassembly of the duct rear cover 10; the sealing connector 50 can be arranged to be rotatably fixed to the duct front cover 20, so as to facilitate the disassembly of the duct rear cover 10 in the integrated duct front cover 30.

[0068] 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.

[0069] 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: include: An air duct foam plate, a sealing foam arranged on the air duct foam plate, and an air duct back cover arranged on the air duct foam plate and located on the same side as the sealing foam; the air duct foam plate is provided with an air guide cavity, and the air duct back cover is connected to the air guide cavity along the up and down directions; the air duct assembly also includes a sealing connector arranged in cooperation with the air duct foam plate, the sealing connector covers part of the air guide cavity adjacent to the air duct back cover, and the bottom end of the sealing connector is connected and cooperated with the air duct back cover, the sealing foam covers other parts of the air guide cavity away from the air duct back cover, and the sealing foam covers the surface of the sealing connector.

2. The air duct assembly according to claim 1, 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 air guide cavity and is adhered to the surface of the sealing connector.

3. The air duct assembly according to claim 1, characterized in that: The sealing connector includes a connecting wall covering the air guiding cavity and a step wall arranged at one end of the connecting wall close to the rear cover of the air duct. The step wall is connected to the connecting wall to form a step surface facing away from the rear cover of the air duct. The sealing foam is adhered to the connecting wall and the bottom end abuts against the step surface.

4. The air duct assembly according to claim 3, characterized in that: A slot opening toward the air duct rear cover is formed between the step wall and the connecting wall. The air duct rear cover is provided with an air guide wall cooperating with the slot. The top edge of the air guide wall is provided with a first sealing strip and inserted into the slot together. The port at the corresponding top edge of the air guide wall is formed as an air outlet, and the air outlet is connected to the air guide cavity.

5. The air duct assembly according to claim 3, characterized in that: The air duct assembly includes an air duct front cover, the sealing connector is a plastic part and is fixed to the air duct front cover, the sealing connector is provided with snap parts on both sides of the connecting wall, the air duct front cover is provided with a snap wall cooperating with the snap part, and the snap part is a plurality of limiting protrusions arranged along the up and down directions.

6. The air duct assembly according to claim 3, characterized in that: The air duct assembly includes an air duct front cover, the sealing connector is a plastic part and is rotatably arranged on the air duct front cover; the sealing connector is provided with a rotating shaft and a limiting protrusion on both sides of the connecting wall, and the air duct front cover is provided with a rotating groove cooperating with the rotating shaft and a snap groove cooperating with the limiting protrusion.

7. The air duct assembly according to claim 4, 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, the bottom end of the air guide cavity is connected to the air outlet to form a first air guide channel, and the sealing connector seals the connection between the air outlet and the air guide cavity.

8. The air duct assembly according to claim 7, characterized in that: The air duct foam plate includes a second foam plate arranged below the first foam plate, the air duct back cover shields the second foam plate, and a receiving cavity is formed between the second foam plate, and the air duct component includes a fan component arranged in the receiving cavity.

9. The air duct assembly according to claim 8, characterized in that: The second foam plate further forms a second air guiding channel extending from the fan to the air outlet in the receiving cavity, and the second foam plate is configured as a gradually inclined air guiding surface corresponding to the second air guiding channel.

10. The air duct assembly according to claim 8, characterized in that: The air duct front cover includes a first front cover located at the top and a second front cover located at the bottom, the first front cover is assembled and fixed with a first foam board, and the second front cover is assembled and fixed with a second foam board; the first foam board and the second foam board are separately arranged, or the first foam board and the second foam board are formed integrally; the first front cover is fixed with a snap fastener, or the first front cover and the second front cover are formed integrally.

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

12. The air duct assembly according to claim 11, characterized in that: A second sealing strip is arranged on one side of the air duct rear cover facing the rear wall of the box body, and the second sealing strip is adhered to the air duct rear cover and abuts against the rear wall of the box body.

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