Air duct assembly and refrigerator

Abstract

The utility model relates to the technical field of refrigerators, and discloses an air duct assembly. The air duct assembly comprises a first cover body, a second cover body, a third cover body and an air door. The second cover body covers one side of the first cover body, and a first circulation cavity is defined by the second cover body and the first cover body; the third cover body abuts against the first cover body and the second cover body to define a second circulation cavity, and the first circulation cavity is communicated with the second circulation cavity; the air door is assembled in the second circulation cavity. In the application, the second cover body covers one side of the first cover body, and the third cover body abuts against the first cover body and the second cover body, so that the first circulation cavity communicates with the second circulation cavity. The air door is assembled in the second circulation cavity, under the condition that the space between the air door and the cavity wall of the second circulation cavity is sealed, even if a gap is formed in the cavity wall of the second circulation cavity, due to the fact that the first circulation cavity is independently defined by the first cover body and the second cover body, the gap does not extend into the first circulation cavity, and therefore extension of the gap is shortened; and the air leakage risk is reduced. The utility model further discloses the refrigerator.

Description

Technical Field

[0001] The present application relates to the technical field of refrigerators, for example, to an air duct assembly and a refrigerator. Background Art

[0002] At present, the air duct of a refrigerator refers to the channel structure inside the refrigerator that is used to guide the circulation of air. In an air-cooled refrigerator, an air door is installed in the air duct to achieve multi-temperature regulation of the air volume. There are injection molded air ducts, metal air ducts and foam air ducts. The air duct made of foam has good thermal insulation and can effectively prevent the loss of cold air in the foam air duct and the invasion of external heat. The foam air duct can also absorb some of the noise from the operation of the refrigerator. However, in the process of installing the air door of the foam air duct, the air door needs to be inserted into the air flow duct of the foam air duct for assembly. There is a greater risk of friction and collision between the air door and the foam air duct, and the foam air duct is easily damaged by the collision of the air door.

[0003] There is a foam air duct in the related art, which is characterized by comprising: a first air duct body, a second air duct body and an air door. The first air duct body is made of a foam material in one piece; the second air duct body is made of a foam material in one piece, and together with the first air duct body, it encloses the outflow air duct; the air door is arranged in the outflow air duct. The air door is first assembled on the first air duct body, and then the second air duct body is covered on the first air duct body and the air door to complete the assembly of the foam air duct. During the assembly process, the friction and collision between the air door and the first air duct body and the second air duct body are reduced, and the risk of damage caused by the collision between the first air duct body and the second air duct body and the air door is reduced.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] When the damper is assembled inside the air duct, the need to seal the damper may cause gaps in the assembly of the air duct, resulting in a risk of air leakage in the air duct.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The disclosed embodiments provide an air duct assembly and a refrigerator to shorten the extension of the gap and reduce the risk of air leakage.

[0009] In some embodiments, the air duct assembly includes: a first cover body, a second cover body, a third cover body and a damper. The second cover body is disposed on one side of the first cover body, and together with the first cover body, a first flow cavity is enclosed; the third cover body abuts against the first cover body and the second cover body, and a second flow cavity is defined, and the first flow cavity is connected with the second flow cavity; the damper is installed in the second flow cavity.

[0010] Optionally, part of one side wall of the third cover body abuts against the first cover body, and the rest of one side wall of the third cover body abuts against the second cover body, and the inner side of the third cover body defines a second flow cavity.

[0011] Optionally, a first splicing portion is provided between the first cover body and the third cover body to splice the first cover body and the third cover body; a second splicing portion is provided between the second cover body and the third cover body to splice the second cover body and the third cover body.

[0012] Optionally, the first splicing portion is a first protrusion, one end of the first protrusion is fixedly connected to the first cover body, and one end of the first protrusion facing away from the first cover body extends into the second flow cavity and abuts against the cavity wall thereof.

[0013] Optionally, the second splicing portion is a second protrusion, one end of the second protrusion is fixedly connected to the second cover body, and one end of the second protrusion facing away from the second cover body extends into the second flow cavity and abuts against the cavity wall thereof.

[0014] Optionally, the first cover body abuts against one side wall of the third cover body, the second cover body abuts against another adjacent side wall of the third cover body, and part of the second cover body and the third cover body enclose a second flow cavity.

[0015] Optionally, part of one side wall of the second cover body is covered on one side of the first cover body, and the rest of one side wall of the second cover body is in contact with the third cover body.

[0016] Optionally, a third splicing portion is provided between the second cover body and the third cover body to splice the second cover body and the third cover body.

[0017] Optionally, the first circulation cavity includes: a first hot circulation cavity and a first cold circulation cavity; the second circulation cavity includes: a second hot circulation cavity and a second cold circulation cavity; wherein the first hot circulation cavity is connected to the second hot circulation cavity, the first cold circulation cavity is connected to the second cold circulation cavity, and both the second hot circulation cavity and the second cold circulation cavity are provided with air gates.

[0018] In some embodiments, a refrigerator includes: an air duct assembly as in the above embodiments.

[0019] The air duct assembly and refrigerator provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] The second cover body is placed on one side of the first cover body, and the third cover body is in contact with the first cover body and the second cover body, so that the first circulation cavity is connected with the second circulation cavity. The damper is installed in the second circulation cavity. When the damper and the cavity wall of the second circulation cavity are sealed, even if a gap appears in the cavity wall of the second circulation cavity, since the first circulation cavity is separately enclosed by the first cover body and the second cover body, the gap will not extend into the first circulation cavity, thereby shortening the extension of the gap and reducing the risk of air leakage.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 is a structural schematic diagram of an air duct assembly provided by an embodiment of the present disclosure;

[0024] Figure 2 is an exploded schematic diagram of a schematic diagram of the structure of an air duct assembly provided in an embodiment of the present disclosure;

[0025] Figure 3 is an exploded schematic diagram of another air duct assembly structural schematic diagram provided by an embodiment of the present disclosure;

[0026] Figure 4 is a structural schematic diagram of another air duct assembly provided by an embodiment of the present disclosure;

[0027] Figure 5 is an exploded schematic diagram of another air duct assembly structural schematic diagram provided by an embodiment of the present disclosure;

[0028] Figure 6 is an exploded schematic diagram of another air duct assembly structural schematic diagram provided by an embodiment of the present disclosure;

[0029] Figure 7 It is a structural schematic diagram of a first cover body provided in an embodiment of the present disclosure.

[0030] Reference numerals:

[0031] 100, first cover body; 200, second cover body; 210, first air outlet; 220, second air outlet; 300, third cover body; 400, air door; 510, first circulation cavity; 520, second circulation cavity; 610, first splicing part; 611, first protrusion; 620, second splicing part; 621, second protrusion; 630, third splicing part; 631, third protrusion; 632, third groove; 640, fourth splicing part; 641, fourth protrusion; 642, fourth groove; 511, first hot circulation cavity; 512, first cold circulation cavity; 521, second hot circulation cavity; 522, second cold circulation cavity; 700, water storage tank; 710, inclined guide surface. DETAILED DESCRIPTION

[0032] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0033] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0034] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0035] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0036] Unless otherwise stated, the term "plurality" means two or more.

[0037] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0038] Combination Figure 1-7 As shown, the embodiment of the present disclosure provides an air duct assembly, including: a first cover body 100, a second cover body 200, a third cover body 300 and a damper 400. The second cover body 200 is covered on one side of the first cover body 100, and together with the first cover body 100, a first flow cavity 510 is enclosed; the third cover body 300 abuts against the first cover body 100 and the second cover body 200, and a second flow cavity 520 is defined, and the first flow cavity 510 is connected with the second flow cavity 520; the damper 400 is assembled in the second flow cavity 520.

[0039] By using the air duct assembly provided by the embodiment of the present disclosure, the second cover body 200 can be covered on one side of the first cover body 100, and the third cover body 300 can be abutted against the first cover body 100 and the second cover body 200, so that the first circulation cavity 510 is connected with the second circulation cavity 520. The damper 400 is assembled in the second circulation cavity 520. When the damper 400 and the cavity wall of the second circulation cavity 520 are sealed, even if a gap appears in the cavity wall of the second circulation cavity 520, since the first circulation cavity 510 is separately enclosed by the first cover body 100 and the second cover body 200, the gap will not extend into the first circulation cavity 510, thereby shortening the extension of the gap and reducing the risk of air leakage.

[0040] Combination Figures 1 to 3As shown, in one embodiment, part of one side wall of the third cover body 300 abuts against the first cover body 100, and the rest of one side wall of the third cover body 300 abuts against the second cover body 200, and the inner side of the third cover body 300 defines a second circulation cavity 520. In this way, the damper 400 is assembled in the second circulation cavity 520, that is, assembled in the third cover body 300, and then the first cover body 100, the second cover body 200 and the third cover body 300 are assembled together. In the case of sealing between the damper 400 and the cavity wall of the second circulation cavity 520, since the third cover body 300 is an integrated structure, there will be no gap in the cavity wall of the second circulation cavity 520. The second circulation cavity 520 enclosed by the first cover body 100 and the second cover body 200 will not be affected by the gap, thereby reducing the risk of air leakage.

[0041] Specifically, part of the upper side wall of the third cover body 300 abuts against the lower side wall of the first cover body 100 , and the rest of the upper side wall of the third cover body 300 abuts against the lower side wall of the second cover body 200 .

[0042] Specifically, the second cover 200 is provided with a first air port 210, and the third cover 300 is provided with a second air port 220. In this way, the airflow in the first circulation cavity 510 and the second circulation cavity 520 can be connected to the outside through the first air port 210 and the second air port 220 for convection.

[0043] Optionally, along the vertical direction, the length of the first cover 100 is equal to the length of the second cover 200. In this way, when the first cover 100, the second cover 200 and the third cover 300 are assembled together, since the first cover 100, the second cover 200 and the third cover 300 abut against the same side wall, one of the first cover 100 and the second cover 200 will not protrude from the other, thereby reducing the difficulty of assembling the air duct assembly in the refrigerator and saving the space occupied by the assembly.

[0044] Optionally, in the vertical direction, the length of the third cover 300 is less than or equal to one-half of the length of the first cover 100, and greater than or equal to one-quarter of the length of the first cover 100. In this way, when the length of the third cover 300 is greater than one-half of the length of the first cover 100, the length of the third cover 300 is too long, making the length of the second circulation cavity 520 too long. The installation stroke of assembling the damper 400 in the second circulation cavity 520 is long, which increases the difficulty of installation and has a greater risk of damaging the cavity wall of the second circulation cavity 520. When the length of the third cover 300 is less than one-quarter of the length of the first cover 100, the length of the third cover 300 is too small, and when the damper 400 is assembled in the second circulation cavity 520, there is a greater risk that the damper 400 protrudes from the surface of the third cover 300. It can be seen that the length of the third cover 300 is less than or equal to one-half of the length of the first cover 100, and greater than or equal to one-quarter of the length of the first cover 100, which is a relatively reasonable range. The installation stroke of assembling the damper 400 in the second circulation cavity 520 is relatively short, which reduces the installation difficulty and the risk of damaging the cavity wall of the second circulation cavity 520 is relatively small. The risk of the damper 400 protruding from the surface of the third cover 300 is also relatively small.

[0045] Specifically, along the vertical direction, the length of the third cover body 300 is equal to one third of the length of the first cover body 100. In this way, the installation stroke of assembling the damper 400 in the second circulation cavity 520 is relatively short, which reduces the installation difficulty and the risk of damaging the cavity wall of the second circulation cavity 520 is relatively small. The risk of the damper 400 protruding from the surface of the third cover body 300 is also relatively small.

[0046] It can be understood that along the vertical direction, the length of the first cover body 100 is equal to the length of the second cover body 200. When the length of the third cover body 300 is equal to one third of the length of the first cover body 100, the length of the third cover body 300 is also equal to one third of the length of the first cover body 100.

[0047] Optionally, a first joint portion 610 is provided between the first cover 100 and the third cover 300 to join the first cover 100 and the third cover 300; a second joint portion 620 is provided between the second cover 200 and the third cover 300 to join the second cover 200 and the third cover 300. In this way, the first cover 100 and the third cover 300 are joined by the first joint portion 610, and the second cover 200 and the third cover 300 are joined by the second joint portion 620, thereby improving the stability of the connection.

[0048] Specifically, the lower side wall of the first cover body 100 abuts against the upper side wall of the third cover body 300 .

[0049] Optionally, the first joint portion 610 is a first protrusion 611, one end of the first protrusion 611 is fixedly connected to the first cover body 100, and one end of the first protrusion 611 facing away from the first cover body 100 extends into the second flow cavity 520 and abuts against its cavity wall. In this way, the first protrusion 611 extends into the second flow cavity 520 and abuts against its cavity wall, with a larger contact area and higher connection stability.

[0050] Optionally, the second joint portion 620 is a second protrusion 621, one end of the second protrusion 621 is fixedly connected to the second cover body 200, and the end of the second protrusion 621 facing away from the second cover body 200 extends into the second flow cavity 520 and abuts against the cavity wall thereof. In this way, the second protrusion 621 extends into the second flow cavity 520 and abuts against the cavity wall thereof, with a larger contact area and higher connection stability.

[0051] Specifically, the first protrusion 611 is in contact with a side wall of the second cover body 200 and the second protrusion 621 is in contact with a side wall of the first cover body 100. In this way, the first protrusion 611 and the second protrusion 621 are in contact with each other and support each other, thereby increasing the friction between the first protrusion 611 and the second protrusion 621 and the cavity wall of the second flow cavity 520 and improving the stability of the connection.

[0052] Combination Figures 4 to 6 As shown, in another embodiment, the first cover 100 abuts against one side wall of the third cover 300, the second cover 200 abuts against another adjacent side wall of the third cover 300, and a portion of the second cover 200 and the third cover 300 enclose a second flow cavity 520. In this way, the damper 400 can be first assembled in one of the third cover 300 and the portion corresponding to the second cover 200 and the third cover 300, and then the other cover is assembled, and then the damper 400 is assembled into the second flow cavity 520. The assembly process is more intuitive and simple, reducing the risk of damaging the cavity wall of the second flow cavity 520. When sealing is performed between the damper 400 and the cavity wall of the second circulation cavity 520, even if a gap appears between the second cover body 200 and the third cover body 300, since the first circulation cavity 510 is separately enclosed by the first cover body 100 and the second cover body 200, and the first cover body 100 and the third cover body 300 are separately arranged, the gap will not extend into the first circulation cavity 510, thereby shortening the extension of the gap and reducing the risk of air leakage.

[0053] Optionally, part of one side wall of the second cover 200 is covered on one side of the first cover 100, and the rest of one side wall of the second cover 200 is in contact with the third cover 300. In this way, the first cover 100 and the third cover 300 are assembled on the same side wall of the second cover 200, and the assembly process is more intuitive and simpler.

[0054] Specifically, in the vertical direction, the length of the first cover 100 plus the length of the third cover 300 is equal to the length of the second cover 200. In this way, when the first cover 100 and the third cover 300 are assembled on the second cover 200, the risk of the first cover 100 and the third cover 300 protruding from both ends of the second cover 200 is reduced. This reduces the difficulty of assembling the air duct assembly in the refrigerator and saves the space occupied by the assembly.

[0055] Optionally, a third splicing portion 630 is provided between the second cover 200 and the third cover 300 to splice the second cover 200 and the third cover 300. In this way, the second cover 200 and the third cover 300 are spliced ​​by the third splicing portion 630, thereby improving the stability of the connection.

[0056] Optionally, the third joint portion 630 includes: a third protrusion 631 and a third groove 632. One of the second cover 200 and the third cover 300 is provided with the third protrusion 631, and the other is provided with the third groove 632; wherein, when the second cover 200 and the third cover 300 are in contact, the third protrusion 631 extends into the third groove 632 and abuts against the groove wall thereof. In this way, the third protrusion 631 extends into the third groove 632 and abuts against the groove wall thereof, the contact area is larger, and the connection stability is higher.

[0057] Specifically, the lower side wall of the second cover 200 is provided with a third protrusion 631, and the upper side wall of the third cover 300 is provided with a third groove 632. In this way, the third protrusion 631 extends into the third groove 632 and abuts against the groove wall, the contact area is larger, and the connection stability is higher.

[0058] It can be understood that when the third protrusion 631 extends into the third groove 632 and abuts against its groove wall, the cavity wall of the second circulation cavity 520 and a vertical side wall of the third protrusion 631 are located in the same plane, which can reduce the space occupied by the third protrusion 631 in the second circulation cavity 520.

[0059] Optionally, a fourth joint portion 640 is provided between the first cover 100 and the second cover 200 to join the first cover 100 and the second cover 200. Thus, the first cover 100 and the second cover 200 are joined by the fourth joint portion 640, thereby improving the stability of the connection.

[0060] Optionally, the fourth joint portion 640 includes: a fourth protrusion 641 and a fourth groove 642. One of the first cover 100 and the second cover 200 is provided with the fourth protrusion 641, and the other is provided with the fourth groove 642. In this way, the fourth protrusion 641 extends into the fourth groove 642 and abuts against the groove wall thereof, so that the contact area is larger and the connection stability is higher.

[0061] Optionally, the first circulation cavity 510 includes: a first hot circulation cavity 511 and a first cold circulation cavity 512; the second circulation cavity 520 includes: a second hot circulation cavity 521 and a second cold circulation cavity 522; wherein the first hot circulation cavity 511 is connected to the second hot circulation cavity 521, the first cold circulation cavity 512 is connected to the second cold circulation cavity 522, and the second hot circulation cavity 521 and the second cold circulation cavity 522 are both provided with dampers 400. In this way, two circulation cavities are provided to meet the requirements of airflow at different temperatures.

[0062] It can be understood that when two or more circulation chambers are provided, shortening the extension of the gap and reducing the risk of air leakage can also reduce the risk of air cross-talk between different circulation chambers and improve the temperature stability in each circulation chamber.

[0063] Specifically, the first air outlet 210 includes: a first hot air outlet and a first cold air outlet. The first hot air outlet is communicated with the first hot circulation cavity 511; the first cold air outlet is communicated with the first cold circulation cavity 512.

[0064] Specifically, the second air outlet 220 includes: a second hot air outlet and a second cold air outlet. The second hot air outlet is communicated with the second hot circulation cavity 521; the second cold air outlet is communicated with the second cold circulation cavity 522.

[0065] Combination Figure 7 As shown, optionally, a water storage tank 700 is provided on the inner side wall of the first circulation cavity 510, and the water storage tank 700 is perpendicular to the air flow direction in the first circulation cavity 510; and in the vertical direction, the water storage tank 700 is located above the damper 400. In this way, since the water storage tank 700 is provided on the inner side wall of the first circulation cavity 510, when there is water on the inner side wall of the first circulation cavity 510, the water flows into the water storage tank 700 along the inner side wall of the first circulation cavity 510, and the water droplets are intercepted by the water storage tank 700 and temporarily stored, thereby reducing the risk of water flowing to the damper 400 and freezing at the damper 400, and ensuring that the damper 400 can be opened and closed normally.

[0066] Optionally, a plurality of water storage tanks 700 are provided along the airflow direction in the first circulation cavity 510. Thus, by providing a plurality of water storage tanks 700, the number of times water is intercepted is increased, and the amount of water temporarily stored is also increased. The risk of water flowing to the damper 400 and freezing at the damper 400 is further reduced, ensuring that the damper 400 can be opened and closed normally.

[0067] Specifically, two water storage tanks 700 are provided along the airflow direction in the first flow cavity 510. Thus, by providing two water storage tanks 700, the number of times water is intercepted is increased, and the amount of water temporarily stored is also increased. The risk of water flowing to the damper 400 and freezing at the damper 400 is further reduced, ensuring that the damper 400 can be opened and closed normally.

[0068] Optionally, the upper side wall of the water storage tank 700 is provided with an inclined guide surface 710. In this way, water droplets can flow more smoothly into the water storage tank 700 through the inclined guide surface 710. The risk of water droplets directly dripping from the upper side wall of the water storage tank 700 to the lower side wall of the water storage tank 700 is reduced, and water splashing is reduced.

[0069] Specifically, the upper side wall of each water storage tank 700 is provided with an inclined guide surface 710. In this way, the upper side wall of each water storage tank 700 guides water droplets to flow into the water storage tank 700 through the corresponding inclined guide surface 710, making the water flow smoother. The risk of water droplets directly dripping from the upper side wall of the water storage tank 700 to the lower side wall of the water storage tank 700 is reduced, and water splashing is reduced.

[0070] Optionally, the lower side wall of the water storage tank 700 is inclined downward toward the inside of the water storage tank 700. In this way, the amount of water stored at the bottom of the water storage tank 700 is increased.

[0071] Specifically, the lower side wall of each water storage tank 700 is inclined downward toward the inside of the water storage tank 700 .

[0072] In some embodiments, a refrigerator includes: an air duct assembly as in the above embodiments.

[0073] In the refrigerator provided by this embodiment, since the refrigerator includes the air duct assembly in the above embodiment, the second cover body 200 can be covered on one side of the first cover body 100, and the third cover body 300 abuts against the first cover body 100 and the second cover body 200, so that the first circulation cavity 510 is connected with the second circulation cavity 520. The damper 400 is assembled in the second circulation cavity 520. In the case of sealing between the damper 400 and the cavity wall of the second circulation cavity 520, even if a gap appears in the cavity wall of the second circulation cavity 520, since the first circulation cavity 510 is separately enclosed by the first cover body 100 and the second cover body 200, the gap will not extend into the first circulation cavity 510, thereby shortening the extension of the gap and reducing the risk of air leakage.

[0074] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air duct assembly, characterized in that: include: A first cover (100); A second cover body (200) is disposed on one side of the first cover body (100) and together with the first cover body (100) encloses a first flow cavity (510); The third cover body (300) is in contact with the first cover body (100) and the second cover body (200) to define a second circulation cavity (520), and the first circulation cavity (510) is in communication with the second circulation cavity (520); The damper (400) is installed in the second flow cavity (520).

2. The air duct assembly according to claim 1, characterized in that: A portion of a side wall of the third cover body (300) abuts against the first cover body (100), and the remaining portion of a side wall of the third cover body (300) abuts against the second cover body (200), and the inner side of the third cover body (300) defines a second flow cavity (520).

3. The air duct assembly according to claim 2, characterized in that: A first splicing portion (610) is provided between the first cover body (100) and the third cover body (300) to splice the first cover body (100) and the third cover body (300); A second splicing portion (620) is provided between the second cover body (200) and the third cover body (300) for splicing the second cover body (200) and the third cover body (300).

4. The air duct assembly according to claim 3, characterized in that: The first joint portion (610) is a first protrusion (611), one end of which is fixedly connected to the first cover body (100), and one end of the first protrusion (611) facing away from the first cover body (100) extends into the second flow cavity (520) and abuts against its cavity wall.

5. The air duct assembly according to claim 3, characterized in that: The second splicing portion (620) is a second protrusion (621), one end of the second protrusion (621) is fixedly connected to the second cover body (200), and one end of the second protrusion (621) facing away from the second cover body (200) extends into the second flow cavity (520) and abuts against its cavity wall.

6. The air duct assembly according to claim 1, characterized in that: The first cover body (100) abuts against one side wall of the third cover body (300), the second cover body (200) abuts against another adjacent side wall of the third cover body (300), and a portion of the second cover body (200) and the third cover body (300) enclose a second flow cavity (520).

7. The air duct assembly according to claim 6, characterized in that: Part of one side wall of the second cover body (200) is covered on one side of the first cover body (100), and the remaining part of one side wall of the second cover body (200) is in contact with the third cover body (300).

8. The air duct assembly according to claim 6, characterized in that: A third splicing portion (630) is provided between the second cover body (200) and the third cover body (300) for splicing the second cover body (200) and the third cover body (300).

9. The air duct assembly according to any one of claims 1 to 8, characterized in that: The first circulation cavity (510) comprises: a first hot circulation cavity (511) and a first cold circulation cavity (512); The second circulation cavity (520) comprises: a second hot circulation cavity (521) and a second cold circulation cavity (522); The first heat circulation cavity (511) is connected to the second heat circulation cavity (521), the first cold circulation cavity (512) is connected to the second cold circulation cavity (522), and both the second heat circulation cavity (521) and the second cold circulation cavity (522) are provided with air doors (400).

10. A refrigerator, characterized in that: The invention comprises an air duct assembly as claimed in any one of claims 1 to 9.

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