CN217031764U

CN217031764U - Air duct assembly for refrigerator and refrigerator

Info

Publication number: CN217031764U
Application number: CN202220049110.7U
Authority: CN
Inventors: 石文博
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-01-10
Filing date: 2022-01-10
Publication date: 2022-07-22
Anticipated expiration: 2032-01-10
Also published as: WO2023131027A1

Abstract

The utility model relates to an air duct assembly for a refrigerator and the refrigerator. The wind channel subassembly includes: the air channel foam is internally provided with an air flow channel for air flow to flow through, and the air channel foam is provided with an air flow outlet for communicating the air flow channel with the storage chamber; the air door is rotatably arranged in the air flow channel so as to completely block the air flow channel or open at least part of the flow cross section of the air flow channel; an operation knob configured to be operably rotated; and a gear transmission mechanism connected between the operation knob and the damper and configured to transmit rotation of the operation knob to the damper to adjust an area of an airflow passage by rotation of the damper. Because the motion mode of operating knob, gear drive and air door is the rotation, frictional resistance is less, can not appear blocking phenomenon, and user operation experience is better. In addition, the utility model realizes the purpose of temperature adjustment completely through a mechanical structure, does not need to arrange a motor, a control program and the like, and reduces the cost.

Description

Air duct assembly for refrigerator and refrigerator

Technical Field

The utility model relates to a refrigeration and freezing technology, in particular to an air duct assembly for a refrigerator and the refrigerator.

Background

The damper of an air-cooled refrigerator is typically an electrically operated damper (programmed, motor driven) or a mechanical damper. Wherein, the cost of electronic air door is higher, accumulates control error easily. The existing mechanical air door mainly drives a shifting sheet connected with a sliding switch to slide through the horizontal sliding of the sliding switch, wherein the shifting sheet is positioned at an air port of a foam air duct and manually slides through the sliding switch, so that the area of the air port is increased and reduced. The shortcoming of current mechanical air door is because of there is gliding motion relation in plectrum and foam wind channel, can't sealed totally before leading to plectrum and foam wind channel, and the leakproofness is relatively poor, leads to amount of wind control not accurate, and sliding friction is more serious, and the easy jam phenomenon in the slip process, user experience is relatively poor.

SUMMERY OF THE UTILITY MODEL

It is an object of a first aspect of the present invention to overcome at least one of the disadvantages of the prior art and to provide a duct assembly for a refrigerator that is better performing and less costly.

It is a further object of the first aspect of the utility model to improve the accuracy and stability of the damper adjustment.

The second aspect of the utility model aims to provide a refrigerator with the air duct assembly.

According to a first aspect of the present invention, there is provided a duct assembly for a refrigerator for selectively delivering a cooling airflow to a storage compartment of the refrigerator, the duct assembly comprising:

the air duct foam is internally provided with an air flow channel for air flow to flow through, and the air duct foam is provided with an air flow outlet for communicating the air flow channel with the storage chamber;

the air door is rotatably arranged in the air flow channel so as to completely block the air flow channel or open at least part of the flow cross section of the air flow channel;

an operation knob configured to be operatively rotated; and

and the gear transmission mechanism is connected between the operation knob and the air door and is configured to transmit the rotation of the operation knob to the air door so as to adjust the flow area of the air flow channel through the rotation of the air door.

Optionally, the air duct assembly further comprises:

and the gear limiting structure is used for being clamped between two adjacent gear teeth of one gear in the gear transmission mechanism after the operation knob stops rotating so as to prevent the gear transmission mechanism from automatically rotating.

Optionally, the gear transmission mechanism is a reduction gear set; and is

The gear limiting structure is used for being clamped between two adjacent gear teeth of a final-stage gear of the gear transmission mechanism.

Optionally, the air duct assembly further comprises:

the air duct cover plate is arranged on the front side of the air duct foam; wherein

The operation knob is located on the front side of the air duct cover plate, and the gear transmission mechanism is located between the air duct cover plate and the air duct foam.

Optionally, the gear transmission mechanism comprises:

the driving gear is coaxially connected with the operation knob and synchronously rotates along with the operation knob; and

and the driven gear is meshed with the driving gear and is coaxially connected with the air door, so that the air door synchronously rotates along with the driven gear.

Optionally, the driving gear and the driven gear are both movably connected with the air duct cover plate through a buckle; and is

The gear limiting structure is arranged on the backward surface of the air duct cover plate.

Optionally, one of the surfaces of the damper is provided with a seal configured to form a seal with the duct foam when the damper is in a closed state completely blocking the airflow passage.

Optionally, the air duct foam includes a damper bracket for supporting the damper, the air flow passage extends through the damper bracket, and the sealing member is in interference fit with the damper bracket when the damper is in a closed state for completely blocking the air flow passage.

Optionally, the air duct foam further comprises an air duct front foam plate and an air duct rear foam plate which are arranged in front and at back, and the air flow channel is formed between the air duct front foam plate and the air duct rear foam plate; and is provided with

The air door support is clamped in the grooves of the air duct front foam board and the air duct rear foam board.

According to a second aspect of the present invention, there is also provided a refrigerator comprising:

a case defining a storage compartment therein for storing articles;

the door body is connected to the front side of the box body and used for opening and/or closing the storage compartment; and

the air duct assembly is arranged on the rear side of the storage compartment and used for selectively conveying cooling air flow into the storage compartment.

The air duct assembly of the present invention includes an air duct foam defining an air flow passage, a damper rotatably disposed in the air flow passage, an operating knob operatively rotatable, and a gear drive for transmitting rotation of the operating knob to the damper. When the user needs to adjust the air output in the storage room, the operation knob is rotated, the gear transmission mechanism rotates and transmits the air door to drive the air door to rotate, the air door can rotate to change the size of the overflowing section of the airflow channel covered by the air door, so that the overflowing area of the airflow channel is changed, the size of the airflow which is sent to the storage room through the airflow channel is changed, and the purpose of adjusting the temperature of the storage room is achieved. Because the motion modes of the operation knob, the gear transmission mechanism and the air door are all rotation, the friction resistance is small, the blocking phenomenon can not occur, and the operation experience of a user is good. In addition, the utility model realizes the purpose of temperature adjustment completely through a mechanical structure, does not need to arrange a motor, a control program and the like, and reduces the cost.

Furthermore, the air duct assembly further comprises at least one gear limiting structure, and after the operation knob stops rotating, the gear limiting structure is clamped between two adjacent gear teeth of one of the gears, so that on one hand, the gear transmission mechanism can be prevented from automatically rotating under the condition of no external force, the air door is ensured to be stably kept at the adjusted position, and the stability of air door adjustment is improved; on the other hand, because the setting of gear limit structure can make every teeth of a cogwheel of gear all be equivalent to a fender position of air door, realized that the air door keeps off the fine setting of position, improved the precision that the air door was adjusted.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily to scale. In the drawings:

FIG. 1 is a schematic structural view of a duct assembly for a refrigerator according to one embodiment of the present invention;

fig. 2 and 3 are schematic exploded views of a duct assembly for a refrigerator according to an embodiment of the present invention in different orientations, respectively;

FIG. 4 is a schematic block diagram of the damper, operating knob and gear assembly in an assembled state in accordance with one embodiment of the present invention;

FIG. 5 is a schematic block diagram of a duct cover and gear drive mechanism according to one embodiment of the present invention;

fig. 6 is a schematic enlarged view of a portion a in fig. 5;

fig. 7 is a schematic structural view of a refrigerator according to one embodiment of the present invention.

Detailed Description

The present invention is directed to an air duct assembly for a refrigerator for selectively delivering a cooling airflow to a storage compartment of the refrigerator.

Fig. 1 is a schematic structural view of an air duct assembly for a refrigerator according to an embodiment of the present invention, and fig. 2 and 3 are schematic structural exploded views of the air duct assembly for a refrigerator according to an embodiment of the present invention in different orientations, respectively. Referring to fig. 1-3, the air duct assembly 10 of the present invention includes a duct foam 11, a damper 12, an operating knob 13, and a gear assembly 14. Fig. 4 is a schematic block diagram of the damper, operating knob and gear train in an assembled state in accordance with one embodiment of the present invention.

Referring to fig. 1 to 4, an airflow channel 111 for allowing airflow to flow through is defined in the air duct foam 11, and an airflow outlet 112 for communicating the airflow channel 111 with the storage compartment is opened on the air duct foam 11, so that the airflow in the airflow channel 111 is sent to the storage compartment through the airflow outlet 112. Specifically, the air flow passage 111 may extend vertically within the duct foam 11. The airflow outlet 112 is located on the front side of the duct foam 11.

The damper 12 is rotatably provided in the air flow passage 111 to completely close off the air flow passage 111 or to open at least a part of the flow cross section of the air flow passage 111. When the damper 12 completely blocks the air flow passage 111, the flow passage in the air flow passage 111 is completely blocked, and the air flow can no longer flow through the air flow passage 111 to the air flow outlet 112. When the damper 12 opens all the flow cross sections of the airflow channel 111, the flow area of the airflow channel 111 reaches the maximum, and the airflow is the maximum; when the damper 12 opens the flow cross section of the part of the air flow passage 111, the damper 12 simultaneously shields the flow cross section of other parts of the air flow passage 111, and the more the flow cross section of the air flow passage 111 that the damper 12 opens, the greater the amount of air flow in the air flow passage 111.

The operation knob 13 is configured to be operatively rotated. That is, the user can turn the operation knob 13 to adjust the state of the damper 12 by operating the knob 13.

The gear transmission 14 is connected between the operation knob 13 and the damper 12, and is configured to transmit rotation of the operation knob 13 to the damper 12 to adjust an area of an air flow passage 111 by rotation of the damper 12, thereby adjusting an amount of air flow of the air flow passage 111.

The air duct assembly 10 of the present invention includes a duct foam 11 defining an air flow passage 111, a damper 12 rotatably disposed in the air flow passage 111, an operating knob 13 operatively rotatable, and a gear transmission 14 for transmitting rotation of the operating knob 13 to the damper 12. When the user needs to adjust the position of the air door 12 (that is, when the user needs to adjust the temperature in the storage room), the operation knob 13 is rotated, the gear transmission mechanism 14 transmits the rotation to the air door 12 to drive the air door 12 to rotate, the size of the overflowing section of the air flow channel 111 covered by the air door 12 can be changed by the rotation of the air door 12, so that the overflowing area of the air flow channel 111 is changed, the air flow quantity sent to the storage room through the air flow channel 111 is changed, and the purpose of adjusting the temperature of the storage room is achieved.

Because the motion modes of the operation knob 13, the gear transmission mechanism 14 and the air door 12 are all rotation, the friction resistance is small, the blocking phenomenon cannot occur, and the user operation experience is good. In addition, the temperature adjusting device completely achieves the purpose of temperature adjustment through a mechanical structure, does not need to be provided with a motor, a control program and the like, and reduces the cost.

In some embodiments, the air duct assembly 10 further includes an air duct flap 16, the air duct flap 16 being disposed on a front side of the air duct foam 11 to shield the air duct foam 11. Specifically, the air duct cover 16 is provided with an air supply port 161 for supplying air to the storage compartment, and the air supply port 161 is opposite to and communicated with the air flow outlet 112 of the air duct foam 11 in the front-back direction.

Fig. 5 is a schematic structural view of an air duct cover and a gear transmission mechanism according to an embodiment of the present invention, and fig. 6 is a schematic enlarged view of a portion a in fig. 5. Referring to fig. 5 and 6, in some embodiments, the air duct assembly 10 further includes at least one gear limiting structure 15, and the gear limiting structure 15 is configured to be clamped between two adjacent gear teeth of one of the gears 14 after the operation knob 13 stops rotating, so as to prevent the gears 14 from automatically rotating. That is, when the user rotates the operation knob 13, the gear of the gear transmission mechanism 14 moves relative to the gear limit structure 15. After the operation knob 13 stops rotating, the gear limiting structure 15 is clamped between two adjacent gear teeth of one of the gears, on one hand, the gear transmission mechanism 14 can be prevented from automatically rotating under the condition of no external force action, so that the air door is ensured to be stably kept at the adjusted position, the stability of adjustment of the air door 12 is improved, and the temperature of the storage chamber is ensured to be stabilized in the adjusted temperature range; on the other hand, gear limit structure 15's setting can make every teeth of a cogwheel of gear all be equivalent to one of air door 12 and keep off the position, has realized that air door 12 keeps off the fine setting of position, has improved the precision that air door 12 adjusted to make indoor temperature regulation more meticulous in storing room, satisfied the higher demand of user.

Specifically, the gear limit structure 15 is disposed radially outward of one of the gears of the gear transmission 14. The specific structural form of the gear limiting structure 15 may be a protrusion protruding toward the radial inner side of the gear, the protrusion may be disposed on an annular shroud 162 located at the radial outer side of the gear, and the annular shroud 162 preferably has a certain hardness and a certain deformation capability, so as to allow the protrusion located thereon to move relative to the teeth of the gear when the gear rotates and allow the protrusion to be stably clamped between two adjacent teeth of the gear when the gear is stationary.

Further, the number of the gear limiting structures 15 can be two, the two gear limiting structures 15 are distributed on the same circular ring, and a connecting line of the two gear limiting structures 15 passes through the circle center of the circular ring, so that the limiting acting force is applied to the gear more uniformly.

In some embodiments, gear assembly 14 is a reduction gear set. That is, when the operation knob 13 is rotated, the rotation angle of the damper 12 is smaller than that of the operation knob 13, so that the rotation angle of the damper 12 is more finely adjusted.

Further, the gear limiting structure 15 is configured to be clamped between two adjacent gear teeth of the final gear of the gear transmission mechanism 14. The gear number of the final stage gear is the largest, which is equivalent to the gear number of the air door 12, so that the gear division of the air door 12 is finer, and the precision of angle adjustment is higher.

The applicant has appreciated that the angle by which the damper 12 is rotated from the closed state of fully blocking the air flow passage 111 to the fully open state of the air flow section of the fully open air flow passage 111 is 90 °, i.e., the maximum rotation angle of the damper 12 is 90 °. In order to facilitate the user to know the current gear of the damper 12, the rotation angle of the operation knob 13 is 180 ° at most. Therefore, the reduction ratio of the gear transmission 14 can be set to 1:2, and the adjustment accuracy of the damper 12 can be set to the maximum.

Specifically, the gear assembly 14 may be a reduction gear set including two gears.

In some embodiments, the operating knob 13 is located on the front side of the duct cover 16, and the gear drive 14 is located between the duct cover 16 and the duct foam 11. Therefore, only the operation knob 13 which needs to be operated by the user is exposed to the outside, so that the manual operation of the user is convenient, and other components are hidden in the air duct assembly 10, so that the appearance of the air duct assembly 10 is not influenced.

In some embodiments, the gear transmission 14 may specifically include a driving gear 141 and a driven gear 142, wherein the driven gear 142 is the final gear thereof. The driving gear 141 is coaxially connected with the operation knob 13 to be rotated in synchronization with the operation knob 13. The driven gear 142 is engaged with the driving gear 141, and the driven gear 142 is coaxially connected with the damper 12 such that the damper 12 is synchronously rotated with the driven gear 142.

Specifically, the driving gear 141 and the operation knob 13 may be coaxially connected in a manner that a shaft hole and a rotating shaft are inserted, and the shaft hole and the rotating shaft are connected in a matching manner, so that the driving gear 141 and the operation knob 13 rotate synchronously. The shaft hole and the rotation shaft may be formed at the axial centers of the operation knob 13 and the driving gear 141, respectively, or the shaft hole and the rotation shaft may be formed at the axial centers of the driving gear 141 and the operation knob 13, respectively.

Specifically, the driven gear 142 and the damper 12 may be coaxially connected by inserting a shaft hole and a rotating shaft, and the shaft hole and the rotating shaft are connected in a matching manner, so that the driven gear 142 and the damper 12 rotate synchronously. The shaft hole and the rotation shaft may be formed at the axial centers of the driven gear 142 and the damper 12, respectively, or the shaft hole and the rotation shaft may be formed at the axial centers of the damper 12 and the driven gear 142, respectively.

In some embodiments, the driving gear 141 and the driven gear 142 are both movably connected to the air duct cover 16 by a snap. That is, the driving gear 141 and the driven gear 142 are both supported on the air duct cover 16 and will not fall off from the air duct cover 16, and meanwhile, both the driving gear 141 and the driven gear 142 can rotate relative to the air duct cover 16.

Specifically, the buckle may be disposed on the air duct cover 16, and correspondingly, the driving gear 141 and the driven gear 142 are provided with a matching structure slidably engaged with the buckle. The latch may be formed on the driving gear 141 and the driven gear 142, and accordingly, the duct cover 16 is provided with a matching structure slidably engaged with the latch. For example, a buckle may be disposed on a side of the driving gear 141 facing the air duct cover 16, an annular rib is disposed on the air duct cover 16, and the buckle on the driving gear 141 is slidably clamped to the annular rib. The back of wind channel apron 16 is equipped with the buckle, has seted up ring groove on the driven gear 142, and buckle slidable ground joint in ring groove on the wind channel apron 16.

Further, the gear position limiting structure 15 is disposed on a rearward surface of the air duct cover 16 so as to be caught between two adjacent gear teeth of the driving gear 141 or the driven gear 142.

In some embodiments, one of the surfaces of the damper 12 is provided with a seal 17, and the seal 17 is configured to form a seal with the duct foam 11 when the damper 12 is in a closed state that completely blocks the air flow passage 111, thereby preventing air leakage when the damper 12 is in the closed state.

Specifically, the seal 17 may be secured to the surface of the damper 12 by adhesive or other suitable means.

In some embodiments, the duct foam 11 includes a damper bracket 113 for supporting the damper 12, the air flow passage 111 extends through the damper bracket 113, and the seal 17 is in interference fit with the damper bracket 113 when the damper 12 is in a closed state that completely blocks the air flow passage 111, thereby forming a good seal between the damper 12 and the duct foam 11.

Specifically, a through hole is formed in the middle of the damper bracket 113, the sealing member 17 is substantially in the shape of a cone, and when the damper 12 is in a closed state of completely blocking the air flow passage 111, the lower portion of the sealing member 17 is inserted into the through hole of the pipe in the middle of the damper bracket 113 and is tightly fitted to the damper bracket 113.

Preferably, the sealing member 17 may be a sealing member with good deformability, such as a sealing foam, a sealing rubber plug, or the like.

In some embodiments, the duct foam 11 further includes a duct front foam panel 114 and a duct rear foam panel 115 arranged in tandem, and the airflow passage 111 is formed between the duct front foam panel 114 and the duct rear foam panel 115. The same height position of the inner side of the air duct front foam board 114 and the inner side of the air duct rear foam board 115 is provided with a groove 116 which is sunken towards the radial outer side direction of the air flow channel 111, and the damper bracket 113 is clamped in the groove 116 of the air duct front foam board 114 and the air duct rear foam board 115. Accordingly, the damper holder 113 is not displaced in the horizontal direction nor in the vertical direction, and the damper holder 113 can be stably held, thereby ensuring that the damper 12 and the damper holder 113 maintain a good structural fit.

The present invention also provides a refrigerator, and fig. 7 is a schematic structural view of a refrigerator according to an embodiment of the present invention. The refrigerator 1 of the present invention includes a cabinet 20 and a door 30. The case 20 defines a storage compartment 21 for storing articles therein. The door 30 is connected to a front side of the cabinet 20 to open and/or close the storage compartment 21.

In particular, the refrigerator 1 further includes the air duct assembly 10 described in any of the above embodiments, and the air duct assembly 10 is disposed at the rear side of the storage compartment 21 for selectively delivering cooling air flow into the storage compartment 21.

Specifically, the operation knob 13 may be located in the storage compartment 21 to facilitate user operation.

The refrigerator 1 of the utility model allows a user to adjust the temperature range in the storage compartment 21 by rotating the operation knob 13, the gear transmission mechanism 14 and the air door 12 all rotate, the friction resistance is small, the user does not have a pause phenomenon when rotating the operation knob 13, and the operation experience is good. In addition, the refrigerator 1 of the utility model completely realizes the purpose of temperature adjustment through a mechanical structure, does not need to be provided with a motor, a control program and the like, and reduces the cost.

Furthermore, the refrigerator 1 of the present invention can also ensure that the damper is stably kept at the adjusted position through the gear limiting structure 15, and ensure that the temperature of the storage compartment 21 is stabilized in the adjusted temperature range. And, gear limit structure 15's setting can make every teeth of a cogwheel of gear all be equivalent to one of air door 12 and keep off the position, has realized that air door 12 keeps off the fine setting of position, has improved the precision that air door 12 adjusted to make indoor temperature regulation more meticulous in storing room, satisfied the higher demand of user. Thus, the storage compartment 21 can be freely switched among a plurality of functions such as refrigeration, soft freezing, and the like.

It will be appreciated by those skilled in the art that the refrigerator 1 of the present invention may be a double door refrigerator and have two upper and lower storage compartments, wherein the storage compartment 21 may be an upper storage compartment.

In other embodiments, the refrigerator 1 may not be limited to the refrigerator structure shown in fig. 7, and may be a single-door refrigerator having only one storage compartment 21.

In other embodiments, the refrigerator 1 may not be limited to the refrigerator structure shown in fig. 7, and may also be a three-door refrigerator and have three storage compartments, i.e., an upper storage compartment, a middle storage compartment and a lower storage compartment, wherein the storage compartment 21 may be the storage compartment located at the upper portion or the middle portion.

In other embodiments, the refrigerator 1 may not be limited to the refrigerator structure shown in fig. 7, and may also be a side-by-side refrigerator, and has two left and right storage compartments, where the storage compartment 21 may be a storage compartment on one side thereof.

In other embodiments, the refrigerator 1 may not be limited to the refrigerator structure shown in fig. 7, and may also be a cross-door refrigerator and have four storage compartments, i.e., an upper left storage compartment, an upper right storage compartment, a lower left storage compartment, and a lower right storage compartment, wherein the storage compartment 21 may be any storage compartment in the upper portion.

In other embodiments, the refrigerator 1 may not be limited to the refrigerator structure shown in fig. 7, but may also be a refrigerator or other various refrigerating and freezing devices using air cooling.

It should also be understood by those skilled in the art that the terms "upper", "lower", "front", "rear", "top", "bottom", and the like used in the embodiments of the present invention are used as terms for indicating orientation or positional relationship with respect to the actual use state of the air duct assembly 10 and the refrigerator 1, and these terms are only used for convenience of description and understanding of the technical solution of the present invention, and do not indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Thus, it should be appreciated by those skilled in the art that while various exemplary embodiments of the utility model have been shown and described in detail herein, many other variations or modifications which are consistent with the principles of this invention may be determined or derived directly from the disclosure of the present invention without departing from the spirit and scope of the utility model. Accordingly, the scope of the utility model should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A duct assembly for a refrigerator for selectively delivering a flow of cooling air to a storage compartment of the refrigerator, the duct assembly comprising:

the air door is rotatably arranged in the air flow channel to completely block the air flow channel or open at least part of the flow cross section of the air flow channel;

an operation knob configured to be operably rotated; and

2. The air duct assembly of claim 1, further comprising:

3. The air duct assembly of claim 2,

the gear transmission mechanism is a reduction gear set; and is

4. The air duct assembly of claim 2, further comprising:

5. The air duct assembly of claim 4, wherein the gear drive mechanism comprises:

6. The air duct assembly of claim 5,

the driving gear and the driven gear are movably connected with the air duct cover plate through buckles; and is provided with

7. The air duct assembly of claim 1,

one of the surfaces of the damper is provided with a seal configured to form a seal with the duct foam when the damper is in a closed state completely blocking the airflow passage.

8. The air duct assembly of claim 7,

the wind channel foam is including being used for supporting the air door support of air door, airflow channel runs through the air door support when the air door is in complete shutoff airflow channel's closed condition, the sealing member with air door support interference fit.

9. The air duct assembly of claim 8,

the air duct foam also comprises an air duct front foam plate and an air duct rear foam plate which are arranged in the front-back direction, and the air flow channel is formed between the air duct front foam plate and the air duct rear foam plate; and is provided with

The air door support is clamped in the grooves of the air channel front foam board and the air channel rear foam board.

10. A refrigerator, characterized by comprising:

a box body, wherein a storage compartment for storing articles is defined in the box body;

the air duct assembly of any of claims 1-9, disposed at a rear side of the storage compartment for selectively delivering a cooling airflow into the storage compartment.