CN114659331A

CN114659331A - Air inducing duct assembly for refrigerator and refrigerator with same

Info

Publication number: CN114659331A
Application number: CN202210344848.0A
Authority: CN
Inventors: 冯磊; 李波; 周兆涛; 任树飞; 毛宝龙; 伊智慧
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: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-06-24
Also published as: WO2023185782A1

Abstract

The invention provides an induced air duct assembly for a refrigerator and the refrigerator with the same, wherein the induced air duct assembly comprises: a housing defining an air inlet and an air outlet and an air duct connected between the air inlet and the air outlet; and the air door is obliquely arranged in the air channel and is configured to be controlled to be arranged in an opening and closing manner so as to open and close the air channel. The inclined air door is arranged in the shell of the induced air duct assembly, and the inclined air door is used for switching on and off the air duct, so that the vertical space occupied by the air door can be reduced to a certain extent, the vertical size of the shell is reduced, the size of the shell is reduced under the condition that the inherent function of the induced air duct assembly is not influenced, and the refrigerator can keep a higher rated effective volume.

Description

Air inducing duct assembly for refrigerator and refrigerator with same

Technical Field

The invention relates to refrigeration equipment, in particular to an induced air duct assembly for a refrigerator and the refrigerator with the same.

Background

In the field of refrigeration equipment, an induced draft air duct assembly is used for guiding heat exchange air flow flowing through an evaporator to a specific storage compartment so as to adjust the temperature of the storage compartment.

The rated effective volume of the refrigerator is one of key indexes which are very concerned by consumers when purchasing. Factors influencing the rated effective volume of the refrigerator are numerous, and the volume of the induced air duct assembly is one of the factors.

The inventor has recognized that in order to maximize the effective volume of the refrigerator, it is obviously desirable to minimize the volume of other components such as the air duct assembly. Therefore, how to reduce the volume of the induced draft duct assembly without affecting the inherent function of the induced draft duct assembly becomes a technical problem to be solved urgently by those skilled in the art.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

Disclosure of Invention

The invention aims to overcome at least one technical defect in the prior art, and provides an induced air duct assembly for a refrigerator and the refrigerator with the induced air duct assembly.

It is a further object of the present invention to reduce the volume of the induced air duct assembly without affecting the inherent function of the induced air duct assembly, thereby maintaining a high rated effective volume of the refrigerator.

It is a further object of the present invention to reduce or avoid wind drag while reducing the volume of the induced air duct assembly.

It is a still further object of the present invention to reduce or prevent the inability of the damper of the induced draft duct assembly to open and close due to freezing.

According to an aspect of the present invention, there is provided an induced air duct assembly for a refrigerator, including: a housing defining an air inlet and an air outlet and an air duct connected between the air inlet and the air outlet; and the air door is obliquely arranged in the air channel and is configured to be controlled to be arranged in an opening and closing manner so as to open and close the air channel.

Optionally, a mounting section is formed in the air duct, and a positioning piece and an avoidance groove are arranged in the mounting section; and the positioning piece is configured to enable the air door to be obliquely arranged on the installation section relative to the cross section of the installation section at a preset angle, and the avoiding groove is configured to provide a moving space required by the controlled opening process of the air door.

Optionally, the positioning member is configured to form an included angle of 15-60 degrees between the air door and the cross section of the mounting section, so as to reduce the size of the casing and reduce the wind resistance of the air door.

Optionally, the induced draft duct assembly further comprises: the air door frame is used for limiting the air vent and a door frame body enclosing the air vent, and the air door can be pivotally assembled on the door frame body to open or close the air vent so as to open or close the air channel; the installation section is a horizontal air duct section in the air duct; the door frame body slants and extends towards the inner side of the air duct from bottom to top, so that the air door assembled on the door frame body slants synchronously with the door frame body.

Optionally, the positioning member includes a downward protrusion protruding downward from the top of the housing, and a chute portion recessed downward from the bottom of the housing; wherein the lower protruding part is provided with a lower protruding inclined surface for the top of the doorframe body to abut against so as to realize inclination, and the inclined groove part is provided with a lower concave inclined groove for at least one part of the bottom of the doorframe body to be obliquely inserted into so as to realize inclination; the inclination degree of the lower convex inclined surface and the lower concave inclined groove is the same, and the inclination degree of the doorframe body is limited together.

Optionally, the door frame body is provided with a shaft hole for inserting a pivot shaft of the air door into the shaft hole so as to realize rotatable matching; the central axis of the pivot shaft is inclined at a preset angle and is parallel to the length direction of the door frame body; the damper is plate-shaped and is configured to be disposed at a predetermined angle with respect to a vertical plane when the vent is closed, and to rotate toward an inner side of the air duct about a pivot axis in a process of opening the vent.

Optionally, the air inlet is located at a lateral end of the housing, and the air outlet is located at a bottom of the housing, below the door frame body and the air door, and communicates with the escape slot.

Optionally, a converging portion is further formed in the mounting section and located below the door frame body and the air door, the converging portion is communicated with the avoiding groove and has a plurality of converging surfaces extending downwards and towards the avoiding groove, and the converging surfaces are configured to converge the condensed water dropping on the converging portions towards the avoiding groove so as to be discharged out of the casing from the air outlet.

Optionally, the door frame body and the air door are respectively provided with an electric heating component, and the electric heating component is configured to be controlled to be electrified to generate heat so as to heat the door frame body and the air door.

According to another aspect of the present invention, there is also provided a refrigerator including: an induced air duct assembly for a refrigerator as claimed in any preceding claim.

According to the induced air duct assembly for the refrigerator and the refrigerator with the induced air duct assembly, the inclined air door is arranged in the shell of the induced air duct assembly, and the air duct is switched on and off by utilizing the inclined air door, so that the vertical space occupied by the air door can be reduced to a certain extent, the vertical size of the shell is reduced, the volume of the induced air duct assembly is reduced under the condition that the inherent function of the induced air duct assembly is not influenced, and the refrigerator keeps higher rated effective volume.

Furthermore, according to the induced air duct assembly for the refrigerator and the refrigerator with the induced air duct assembly, when the air door is obliquely arranged according to the preset angle of 15-60 degrees, the vertical size of the shell can be effectively reduced, and the wind resistance at the air door can be in a reasonable range, so that the wind resistance is reduced or avoided while the volume of the induced air duct assembly is reduced, and the volume-miniaturized induced air duct assembly still has a good air supply effect.

Further, the air inducing duct assembly for the refrigerator and the refrigerator having the same of the present invention can cause condensation on the damper to flow down and collect to a designated position by inclining the damper, and the damper hardly retains any moisture, so that freezing does not occur. By adopting the scheme of the invention, the problem that the air door of the induced air duct assembly cannot be opened or closed due to freezing can be reduced or avoided, which is favorable for improving the reliability of the induced air duct assembly.

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 invention will be described in detail hereinafter, by way of illustration and not 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 drawn to scale. In the drawings:

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

FIG. 2 is a schematic exploded view of the induction duct assembly for the refrigerator shown in FIG. 1;

FIG. 3 is a front view of a portion of the structure of the induction duct assembly for a refrigerator shown in FIG. 2;

FIG. 4 is a front view of a portion of the structure of the induction duct assembly for a refrigerator shown in FIG. 3;

FIG. 5 is a schematic structural view of an air door frame of an induced draft air duct assembly for a refrigerator according to an embodiment of the present invention;

FIG. 6 is a schematic block diagram of a damper for an induced air duct assembly of a refrigerator according to one embodiment of the present invention;

FIG. 7 is a schematic structural view of a rear housing of an induced air duct assembly for a refrigerator according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a front case of an induced air duct assembly for a refrigerator according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a refrigerator according to one embodiment of the present invention;

fig. 10 is a schematic structural view of a partial structure of a refrigerator according to one embodiment of the present invention.

Detailed Description

Fig. 1 is a schematic structural view of an induced air duct assembly 210 for a refrigerator 10 according to one embodiment of the present invention.

The induced air duct assembly 210 of the present embodiment is used for guiding air, and for example, can be used for guiding the heat exchange air flowing through the evaporator to a specific storage compartment to adjust the temperature of the storage compartment.

Fig. 2 is a schematic exploded view of the induction duct assembly 210 for the refrigerator 10 shown in fig. 1.

The induction duct assembly 210 may generally include a housing 211 and a damper 213. Wherein the housing 211 defines the intake vent 218 and the exhaust vent 212 and an air duct connected between the intake vent 218 and the exhaust vent 212.

The air inlet 218 is used to allow outside air to flow therethrough into the air duct. The air outlet 212 is used for allowing the air flowing through the air duct to flow out of the air duct. The air inlet 218 can be connected to a cold supply terminal, for example, the cold supply terminal can be a heat exchange chamber for generating a heat exchange air flow or an evaporator installation chamber. The air outlet 212 may be in communication with a cold receiving end, such as a storage compartment.

The damper 213 is disposed obliquely in the air duct and is configured to be controllably openable and closable to open and close the air duct. For example, when the damper 213 is in the closed state, the damper 213 may be blocked in the air duct to cut off the air duct, and when the air duct needs to be opened, the damper 213 may be switched to the open state by posture adjustment or position change to unblock the air duct.

It should be noted that the "inclined" is relative to the vertical posture or the horizontal posture. "offset" may refer to being disposed from a vertical attitude within a certain range, or may refer to being disposed from a horizontal attitude within a certain range.

By arranging the inclined air door 213 in the housing 211 of the induced air duct assembly 210 and switching on and off the air duct by using the inclined air door 213, the vertical space occupied by the air door 213 can be reduced to a certain extent, and the vertical size of the housing 211 is reduced, so that the volume of the induced air duct assembly 210 is reduced under the condition that the inherent function of the induced air duct assembly 210 is not influenced, and the refrigerator 10 keeps a higher rated effective volume.

When the vertical dimension of the housing 211 is reduced, more spaces can be avoided above or below the induced air duct assembly 210, and the spaces can be used for installing other components of the refrigerator 10, so that the installation layout of a plurality of components of the refrigerator 10 is more compact, and more spaces can be left for storing articles.

The case 211 may include a front case 211a and a rear case 211b assembled with each other. The front case 211a and the rear case 211b may sandwich the below-described wind door frame 215 in the front-rear direction, further improving the assembling stability of the wind door frame 215.

Fig. 3 is a front view of a partial structure of the induced air duct assembly 210 for the refrigerator 10 shown in fig. 2, in which the front housing 211a is hidden. Fig. 4 is a front view of a portion of the structure of the induced air duct assembly 210 for the refrigerator 10 shown in fig. 3, in which the air door frame 215 and the air door 213 are hidden.

In some alternative embodiments, a mounting section is formed within the air chute, and a positioning member 280 and an escape slot 290 are disposed within the mounting section. Wherein the positioning member 280 is used to tilt the damper 213 thereon at a predetermined angle with respect to the cross-section of the installation section. The escape slot 290 provides the active space required for the controlled opening process of the damper 213. The preset angle can be any angle within the range of 0-90 degrees.

In other words, the positioning member 280 is used to mount the damper 213, and the damper 213 may be fixedly connected directly or indirectly to the positioning member 280, or may be directly or indirectly assembled to the positioning member 280 to be obliquely positioned at a predetermined angle. The avoiding groove 290 is used to allow the damper 213 to perform an opening and closing operation therein, and to avoid mechanical interference in the opening and closing process of the damper 213.

The cross section of the mounting section is a section of the mounting section. For example, the cross section of the mounting section may be substantially vertical when the section of the mounting section within the air duct extends in a horizontal direction. The cross-section of the mounting section may be substantially horizontal when the section within the duct to which the mounting section belongs extends in a vertical direction.

By modifying the molding die, the mounting section can be directly molded in the housing 211. The installation section is used to position the damper 213, and the damper 213 has enough movement space, so as to simplify the assembly structure of the damper 213, ensure the tilted damper 213 to still perform the opening and closing function,

in some alternative embodiments, the mounting section is configured such that the damper 213 forms an angle of 15-60 ° with the cross-section of the mounting section to reduce the size of the housing 211 and reduce the windage of the damper 213. For example, the damper 213 may form an angle of 20 °, 30 °, or 45 ° with the cross section of the mounting section, but is not limited thereto.

When the air door 213 is inclined according to a preset angle of 15-60 degrees, the vertical size of the shell 211 can be effectively reduced, and the wind resistance at the air door 213 can be in a reasonable range, so that the volume of the induced air duct assembly 210 is reduced, the wind resistance is reduced or avoided, and the induced air duct assembly 210 with a small volume still has a good air supply effect.

In some alternative embodiments, the mounting section is a horizontal duct section within the duct. The damper 213 extends obliquely toward the inside of the air duct from bottom to top. For example, the intake vent 218 may be located at one lateral end of the housing 211. The mounting section may be located within a horizontal duct section disposed adjacent the intake vent 218. And the damper 213 may be inclined inwardly along the wind tunnel from the bottom up.

Fig. 5 is a schematic structural view of a wind door frame 215 of an induced air duct assembly 210 for the refrigerator 10 according to one embodiment of the present invention.

In some alternative embodiments, the induced air duct assembly 210 may further include a duct frame 215 defining a vent 215a and a frame body 215b enclosing the vent 215a, and the damper 213 may be pivotally mounted to the frame body 215b to open or close the vent 215a to open or close the duct. By assembly, the damper frame 215 and damper 213 form a damper assembly.

By pivotally mounting the damper 213 to the door frame body 215b, it is possible to reduce the space required for opening and closing the damper 213 as much as possible and to ensure the airtightness of the air passage.

The positioning member 280 includes a lower protrusion 281 protruding downward from the top of the housing 211, the lower protrusion 281 having a lower inclined surface 281a against which the top of the doorframe body 215b is abutted to achieve a slant.

For example, in some alternative embodiments, the plane of the lower inclined protruding surface 281a and the plane of the damper 213 in the closed state may be arranged in parallel. The lower inclined protrusion surfaces 281a may be inclined to the same degree as the damper 213 and the doorframe body 215 b.

The inclination angle of the lower inclined protruding surface 281a determines the inclination angle of the doorframe body 215b, and thus the inclination angle of the damper 213. When it is necessary to adjust the inclination angle of the damper 213, the inclination angle of the lower dump slope 281a may be changed.

The positioning member 280 further includes a chute portion 282 downwardly recessed from the bottom of the housing 211, the chute portion 282 having a downwardly recessed inclined groove 282a into which at least a portion of the bottom of the doorframe body 215b is obliquely inserted to achieve the inclination. The lower convex inclined surface 281a and the lower concave inclined groove 282a are inclined to the same degree and together define the degree of inclination of the doorframe body 215 b.

For example, the outer surface of the doorframe body 215b may be formed with an annular rib, and the size of the concave inclined groove 282a may be matched with the outer shape of the annular rib, so that the bottom of the annular rib may be inserted into the concave inclined groove 282a to fix the doorframe body 215b and to incline the doorframe body 215b at a predetermined angle.

The lower protruding inclined surface 281a and the lower recessed inclined groove 282a are used to position and fix the top and bottom of the doorframe body 215b, respectively, so that the doorframe body 215b can be stably and obliquely placed in the housing 211, which is advantageous to improve the stability of the doorframe body 215 b. In the process of assembling the doorframe body 215b, only "one insertion (i.e., the bottom of the annular convex rib of the doorframe body 215b is obliquely inserted into the concave inclined groove 282 a)" one leaning (i.e., the top of the doorframe body 215b is abutted against the concave inclined surface 281 a) "is required, so that the method is simple, the operation is convenient, and the time and the labor are saved.

In some alternative embodiments, the door frame body 215b is formed with a shaft hole 215c for inserting the pivot shaft 213a of the damper 213 therein to rotatably engage therewith. The central axis of the pivot shaft 213a is inclined at a predetermined angle and parallel to the length direction of the door frame body 215 b.

For example, the pivot shaft 213a of the damper 213 may be provided on the damper 213, extending in the length direction of the damper 213, and provided at one end of the damper 213.

Fig. 6 is a schematic structural view of a damper 213 of an induced air duct assembly 210 for the refrigerator 10 according to one embodiment of the present invention. The damper 213 may have a plate shape configured to be disposed at a predetermined angle with respect to the vertical when the air vent 215a is closed, and to be rotated toward the inside of the air passage about the pivot shaft 213a during the opening of the air vent 215 a. The inner side of the air duct is a side far away from the air inlet 218.

Since the inside space of the wind tunnel is sufficient to allow the damper 213 to rotate toward the inside of the wind tunnel around the pivot shaft 213a during the opening of the air vent 215a, it is possible to arrange the damper assembly at a position close to the air inlet 218 and to prevent mechanical interference of the damper 213 when rotating as much as possible.

It is emphasized that by arranging the damper 213 obliquely, the condensation on the damper 213 can flow down and collect to a prescribed position, and the damper 213 hardly retains any moisture and thus does not freeze. The above embodiments of the present invention can reduce or prevent the air door 213 of the induced air duct assembly 210 from being unable to open or close due to freezing, thereby further improving the reliability of the induced air duct assembly 210.

In some alternative embodiments, the intake vent is located at the lateral end of the housing 211, and the outtake vent 212 is located at the bottom of the housing 211, below the door frame body 215b and the damper 213, and communicates with the escape slot 290.

The installation section further has a converging portion formed therein below the door frame body 215b and the damper 213, the converging portion communicating with the avoiding groove 290 and having a plurality of converging surfaces extending downward and toward the avoiding groove 290, the converging surfaces being configured to converge the condensed water dropping thereon toward the avoiding groove 290, and thus to be discharged from the outlet port 212 out of the housing 211.

Fig. 7 is a schematic configuration view of the rear case 211b of the induction duct assembly 210 for the refrigerator 10 according to one embodiment of the present invention, showing a plurality of merging surfaces of the merging portion.

The communication mode between the converging surface and the avoiding groove 290 can be set according to actual needs, and only the condensed water flowing through the converging surface can be converged to the avoiding groove 290. The avoidance slot 290 of this embodiment may include a bottom wall and a top wall of the mounting section and a space therebetween.

Fig. 8 is a schematic configuration view of the front housing 211a of the induced air duct assembly 210 for the refrigerator 10 according to one embodiment of the present invention, in which the escape groove 290 is shown.

In some alternative embodiments, the bus surfaces include a first bus surface 231, a second bus surface 232, a third bus surface 233, and a fourth bus surface 234. The first converging surface 231 may be a vertical surface and is formed on an outer sidewall of the concave inclined groove 282a for reducing or preventing condensed water formed on the damper assembly from being deposited in the housing 211. The second confluent surface 232 is an inclined surface which is perpendicular to the plane of the damper 213 in the closed state, and the second confluent surface 232 is in contact with the bottom of the doorframe body 215b for allowing the condensed water formed on the doorframe body 215b to flow along the surface thereof and to be discharged. The third converging surface 233 is an inclined surface, and the inclination degree of the third converging surface 233 is greater than any value within a range of 4 to 10 degrees, and the third converging surface 233 is connected to the ends of the first converging surface 231 and the second converging surface 232, and is used for guiding the condensed water led out by the first converging surface 231 and the second converging surface 232 to the bottom wall of the avoiding groove 290 and flowing out of the housing 211 through the air outlet 212. The fourth converging surface 234 is a sloped surface that lies in a plane parallel to the plane of the damper 213 in the closed position. The top end of the fourth converging surface 234 is connected to the bottom of the door frame body 215b, and the bottom end of the fourth converging surface 234 is connected to the bottom wall of the avoiding groove 290, so that the condensed water formed on the door frame body 215b flows along the surface thereof and is discharged to the avoiding groove 290. The condensed water converged to the air outlet 212 can flow out of the housing 211 from the air outlet 212.

In some alternative embodiments, the air outlet 212 of the induced air duct assembly 210 may be connected to an air flow inlet of another induced air duct assembly 210. The condensed water discharged from the air outlet 212 out of the housing 211 can flow down into the air duct of another induced air duct assembly 210, and evaporation of the condensed water can be accelerated under the action of the air flow, so that discharge and treatment of the condensed water are completed.

The avoiding groove 290 not only provides an avoiding space for opening and closing the inclined damper 213, but also enables the condensed water to converge to the concave part, then flow downwards through the air outlet 212 and naturally evaporate and dissipate in the flowing process, so that the influence of the condensed water on the opening and closing of the damper 213 due to cold freezing again can be reduced or avoided.

In order to avoid the interference of the avoiding groove 290 with the opening and closing of the damper 213, the minimum distance between the bottom wall of the avoiding groove 290 and the damper 213 needs to be greater than or equal to any value within the range of 1-10 mm.

In some alternative embodiments, the door frame body 215b and the damper 213 are respectively provided with electric heating parts (not shown in the drawings) configured to be controlled to be energized to generate heat to heat the door frame body 215b and the damper 213.

For example, the electric heating part may be a heating wire. The heating wire may be wound around the door frame body 215b or the damper 213, or may be embedded in the door frame body 215b or the damper 213.

By arranging the electric heating part on the damper assembly, frost can be periodically removed from the damper assembly, and the damper 213 can be maintained in a preferred state, thereby normally performing an opening and closing function.

The structure of the electric heating unit and the connection manner between the electric heating unit and the door frame body 215b or the damper 213 will be easily known to those skilled in the art based on the description of the present embodiment, and therefore, the drawings are not labeled.

Fig. 9 is a schematic structural view of a refrigerator 10 according to one embodiment of the present invention. The refrigerator 10 may generally include an induced draft air duct assembly 210 as in any of the above embodiments. The induced air duct assembly 210 is used for guiding air, and for example, may be disposed in an inner container, and is used for guiding a heat exchange air flow from outside the inner container to a storage compartment defined by the inner container, so as to adjust a temperature of the storage compartment.

Fig. 10 is a schematic structural view of a partial structure of the refrigerator 10 according to one embodiment of the present invention. In some embodiments, the refrigerator 10 may further include an inner container 320 for assembling with the cabinet of the refrigerator 10 to form the cabinet 110. Fig. 10 shows the liner 320 fitted with the induced air duct assembly 210.

The inner container 320 is formed with an air duct installation area for installing the induced air duct assembly 210 and a low temperature storage area 322 located at a front side of the air duct installation area.

Under the action of the induced air duct assembly 210, the low-temperature storage area 322 of the inner container 320 may receive a heat exchange airflow from the outside, for example, the heat exchange airflow may come from another inner container adjacent to the inner container 320 and share the cooling capacity of the evaporator installed in the adjacent inner container. The evaporator does not need to be separately installed in the inner container 320 equipped with the induced air duct assembly 210, which can increase the effective storage volume of the inner container 320 to a certain extent.

According to the induced air duct assembly 210 for the refrigerator 10 and the refrigerator 10 with the induced air duct assembly 210, the inclined air door 213 is arranged in the shell 211 of the induced air duct assembly 210, and the inclined air door 213 is used for switching on and off the air duct, so that the vertical space occupied by the air door 213 can be reduced to a certain extent, the vertical size of the shell 211 is reduced, the volume of the induced air duct assembly 210 is reduced under the condition that the inherent function of the induced air duct assembly 210 is not influenced, and the refrigerator 10 keeps a higher rated effective volume. Meanwhile, the condition that the air door 213 of the induced air duct assembly 210 cannot be opened or closed due to freezing can be reduced or avoided, which is beneficial to improving the reliability of the induced air duct assembly 210.

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

Claims

1. An induced air duct assembly for a refrigerator, comprising:

a housing defining an air inlet and an air outlet and an air duct connected between the air inlet and the air outlet; and

and the air door is obliquely arranged in the air channel and is configured to be controlled to be opened and closed so as to open and close the air channel.

2. The induction air duct assembly of claim 1,

a mounting section is formed in the air duct, and a positioning piece and an avoidance groove are arranged in the mounting section; and is

The positioning piece is configured to enable the air door to be obliquely arranged on the installation section relative to the cross section of the installation section at a preset angle, and the avoiding groove is configured to provide the movement space required by the controlled opening process of the air door.

3. The induction duct assembly of claim 2,

the positioning piece is configured to enable an included angle of 15-60 degrees to be formed between the air door and the cross section of the installation section, so that the size of the shell is reduced, and the wind resistance of the air door is reduced.

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

the air door frame is used for limiting an air vent and a door frame body enclosing the air vent, and the air door is pivotally assembled on the door frame body to open or close the air vent so as to open or close the air channel; and is

The mounting section is a horizontal air duct section in the air duct; the door frame body extends towards the inner side of the air duct from bottom to top in an inclined mode, so that the air door assembled on the door frame body is inclined synchronously with the air door.

5. The induction duct assembly of claim 4,

the positioning piece comprises a downward projection part protruding downwards from the top of the shell and a chute part recessed downwards from the bottom of the shell; wherein

The lower protruding part is provided with a lower protruding inclined surface for the top of the doorframe body to abut against so as to realize inclination, and the inclined groove part is provided with a lower concave inclined groove for at least one part of the bottom of the doorframe body to be obliquely inserted into so as to realize inclination; the lower convex inclined surface and the lower concave inclined groove have the same inclination degree, and the inclination degree of the door frame body is limited together.

6. The induction duct assembly of claim 4,

the door frame body is provided with a shaft hole for inserting the pivot shaft of the air door into the shaft hole so as to realize rotatable matching; the central axis of the pivot shaft is inclined at the preset angle and is parallel to the length direction of the door frame body;

the air door is plate-shaped and is configured to be arranged at the preset angle relative to a vertical surface when the air vent is closed, and the air door rotates around the pivot shaft towards the inner side of the air duct in the process of opening the air vent.

7. The induction air duct assembly of claim 4,

the air inlet is located the horizontal tip of casing, the air outlet is located the bottom of casing, and is located the door frame body with the below of air door, and communicates dodge the groove.

8. The induction duct assembly of claim 7,

the installation section is internally provided with a converging part which is positioned below the door frame body and the air door, the converging part is communicated with the avoiding groove and is provided with a plurality of converging surfaces which downwards face the avoiding groove and extend, and the converging surfaces are configured to converge condensed water dripped on the converging surfaces to the avoiding groove, so that the condensed water is discharged from the air outlet to the shell.

9. The induction duct assembly of claim 4,

the door frame body with be provided with electric heating part on the air door respectively, electric heating part configures to controlled circular telegram heat production to heat the door frame body with the air door.

10. A refrigerator, characterized by comprising:

the induction duct assembly for a refrigerator of any one of claims 1-9.