Air conditioner indoor unit and air duct assembly thereof

Abstract

The utility model provides an air conditioner indoor unit and an air duct assembly thereof, the air conditioner indoor unit comprises a first basic air duct and a second basic air duct, the first basic air duct is provided with a first air guide surface, and one end of the first basic air duct in the transverse direction is provided with a first splicing structure; a second air guide surface is formed on the second basic air duct and is positioned on one side of the first basic air duct in the transverse direction; one end of the first air guide surface is connected with the corresponding end of the second air guide surface; a second splicing structure is arranged at the end, corresponding to the first basic air duct, of the second basic air duct, and the first basic air duct and the second basic air duct are spliced and connected through the first splicing structure and the second splicing structure. The manufacturing or improvement cost of the air conditioner indoor unit is low.

Description

Technical Field

[0001] This utility model relates to the technical field of air conditioners, and in particular to an indoor air conditioner unit and its air duct assembly. Background Technology

[0002] Fan coil air conditioners in related technologies have an air duct frame, which is typically molded as a single piece using injection molding. When manufacturing indoor units of air conditioners of different specifications, multiple sizes of injection molds are required to mold air duct frames of various sizes to fit the corresponding indoor unit specifications. Alternatively, when modifying an indoor unit to another specification, the original air duct frame may not be compatible with the modified unit, necessitating the redesign and manufacture of a new air duct frame of the corresponding size. This results in excessively high manufacturing or modification costs for the indoor unit. Utility Model Content

[0003] In view of the above problems, this utility model is proposed to provide an air conditioning indoor unit and its air duct assembly that overcome or at least partially solve the above problems.

[0004] One objective of this invention is to solve the problem of excessively high manufacturing or modification costs for existing air conditioner indoor units.

[0005] Specifically, this utility model proposes an air duct assembly.

[0006] The air duct assembly of this utility model includes a first basic air duct with a first air guide surface, and a first splicing structure provided at one end of the first basic air duct in the horizontal direction; a second basic air duct with a second air guide surface, located on one side of the first basic air duct in the horizontal direction; one end of the first air guide surface is connected to a corresponding end of the second air guide surface; a second splicing structure is provided at the corresponding end of the second basic air duct and the first basic air duct, and the first basic air duct and the second basic air duct are spliced ​​and connected through the first splicing structure and the second splicing structure.

[0007] In some embodiments, the dimension of the first basic air duct in the lateral direction is greater than the dimension of the second basic air duct in the lateral direction; the ratio of the dimension of the first basic air duct in the lateral direction to the dimension of the second basic air duct in the lateral direction is 2 to 5.

[0008] In some embodiments, the first splicing structure includes one or more first slots disposed at one end of the first basic air duct near the second basic air duct; the second splicing structure includes one or more first buckles disposed at the corresponding ends of the second basic air duct and the first basic air duct; the first buckles are engaged with the first slots.

[0009] In some embodiments, the first splicing structure further includes a plurality of positioning slots disposed at one end of the first basic air duct; the second splicing structure further includes a plurality of positioning posts disposed at one end of the second basic air duct, wherein the plurality of positioning posts are inserted into the plurality of positioning slots in a corresponding manner.

[0010] In some embodiments, the positioning post includes a body and a plurality of ribs, the plurality of ribs being spaced apart along the circumferential direction of the body; the outer end of each rib contacts and abuts against the positioning groove.

[0011] In some embodiments, each of the ribs includes a first segment and a second segment connected sequentially in the transverse direction, the first segment being closer to the first base air duct than the second segment; wherein the height of the first segment decreases in the direction closer to the first base air duct, and the height of the second segment remains unchanged in the transverse direction.

[0012] In some embodiments, the air duct assembly further includes: at least one spliced ​​air duct, each of the spliced ​​air ducts forming a third air guiding surface; the spliced ​​air ducts are spliced ​​between the first basic air duct and the second basic air duct.

[0013] In some embodiments, the splicing duct has a third splicing structure at one end in the horizontal direction and a fourth splicing structure at the other end; the third splicing structure cooperates with the first splicing structure, and the fourth splicing structure cooperates with the second splicing structure.

[0014] In some embodiments, the third splicing structure is identical to the second splicing structure; and / or, the fourth splicing structure is identical to the first splicing structure.

[0015] The indoor unit of the air conditioner of this utility model includes a housing, an air inlet and an air outlet; and an air duct assembly as described in any of the above claims; the air duct assembly is configured to guide airflow entering from the air inlet and blowing out from the air outlet.

[0016] The air conditioner indoor unit of this utility model embodiment includes a first basic air duct and a second basic air duct. One end of the first basic air duct is provided with a first splicing structure, and the corresponding end of the second basic air duct is provided with a second splicing structure, allowing additional splicing air ducts to be connected between the first and second basic air ducts via the first and second splicing structures. On one hand, the first basic air duct, the second basic air duct, and the splicing air ducts can be combined to form air duct components of multiple sizes, eliminating the need to manufacture multiple molds of corresponding sizes. On the other hand, when modifying the air conditioner indoor unit, the original first and second basic air ducts can still be reused. Furthermore, by increasing or decreasing the number of splicing air ducts connected to the first and second basic air ducts, air duct components adapted to the specifications of the modified air conditioner indoor unit can be formed without manufacturing new injection molds. This significantly reduces the manufacturing or modification cost of the air conditioner indoor unit of this utility model embodiment, thus solving the problem of excessively high manufacturing or modification costs for air conditioners.

[0017] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0018] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0019] Figure 1 This is a schematic structural diagram of the air duct assembly according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic structural diagram of the air duct assembly according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic structural diagram of the first basic air duct of this utility model embodiment;

[0022] Figure 4 This is a schematic structural diagram of the second basic air duct according to an embodiment of the present utility model;

[0023] Figure 5 This is a schematic structural diagram of the second basic air duct according to an embodiment of the present utility model;

[0024] Figure 6 This is a schematic structural diagram of the second basic air duct according to an embodiment of the present utility model;

[0025] Figure 7 yes Figure 4A magnified schematic diagram of the structure at point A in the middle;

[0026] Figure 8 This is a schematic structural diagram of the splicing air duct according to an embodiment of the present utility model;

[0027] Figure 9 This is a schematic structural diagram of the splicing air duct according to an embodiment of the present utility model;

[0028] Figure 10 This is a schematic structural diagram of the splicing air duct according to an embodiment of the present utility model;

[0029] Figure 11 This is a schematic structural diagram of the indoor unit of an air conditioner according to an embodiment of this utility model;

[0030] Figure 12 This is a schematic structural diagram of the indoor unit of an air conditioner according to an embodiment of this utility model.

[0031] Figure label:

[0032] Air conditioning indoor unit 10; air duct assembly 100; first basic air duct 110; first air guide surface 111; first splicing structure 120; first slot 121; positioning slot 122; second basic air duct 130; second air guide surface 131; second splicing structure 140; first buckle 141; positioning column 142; protruding rib 143; body 144; splicing air duct 150; third air guide surface 151; third splicing structure 160; fourth splicing structure 170; sealing groove 181; sealing protrusion 182; shell 200; air inlet 210; air outlet 220; heat exchanger 300; fan 400. Detailed Implementation

[0033] The following reference Figures 1 to 12 This description pertains to an indoor air conditioning unit and its duct assembly according to embodiments of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0034] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The air conditioner indoor unit 10 of this utility model is described below with reference to the accompanying drawings.

[0038] like Figures 1-10 As shown, the indoor unit 10 of the air conditioner according to this embodiment of the present invention includes a housing 200, a heat exchanger 300, a fan 400, and an air duct assembly 100. The housing 200 defines an air inlet 210 and an air outlet 220. The heat exchanger 300, the fan 400, and the air duct assembly 100 are all disposed within the housing 200. The fan 400 is used to promote the formation of an airflow that enters the housing 200 through the air inlet 210 and is blown out through the air outlet 220. The air duct assembly 100 cooperates with the fan 400 to guide the airflow from the air inlet 210 to the air outlet 220. The fan 400 is disposed upstream of the heat exchanger 300, which is used for heat exchange with the airflow.

[0039] The air duct assembly 100 of this utility model embodiment is described in detail below with reference to the accompanying drawings.

[0040] The air duct assembly 100 of this utility model embodiment includes a first basic air duct 110 and a second basic air duct 130.

[0041] The first basic air duct 110 has a first air guide surface 111, and a first splicing structure 120 is provided at one end of the first basic air duct 110 in the horizontal direction. The second basic air duct 130 has a second air guide surface 131, located on the same side of the first basic air duct 110 in the horizontal direction. One end of the first air guide surface 111 is connected to the corresponding end of the second air guide surface 131. A second splicing structure 140 is provided at the corresponding end of the second basic air duct 130 and the first basic air duct 110, and the first basic air duct 110 and the second basic air duct 130 are spliced ​​and connected through the first splicing structure 120 and the second splicing structure 140.

[0042] In some alternative embodiments, when the size of the air duct assembly 100 configured in the air conditioner indoor unit 10 is small, only the first basic air duct 110 and the second basic air duct 130 need to be spliced ​​together to fit the air conditioner indoor unit 10 of this embodiment.

[0043] In some alternative embodiments, the duct assembly 100 may also include only one of the first basic duct 110 and the second basic duct 130 to accommodate a smaller size air conditioning indoor unit 10.

[0044] In some alternative embodiments, when the size of the duct assembly 100 configured inside the air conditioner indoor unit 10 is large, the duct assembly 100 includes not only the first basic duct 110 and the second basic duct 130, but also at least one spliced ​​duct 150. The spliced ​​duct 150 forms a third air guide surface 151. The first basic duct 110, at least one spliced ​​duct 150, and the second basic duct 130 are sequentially spliced ​​together in the horizontal direction, and the first air guide surface 111, at least one third air guide surface 151, and the second air guide surface 131 are spliced ​​end-to-end in the horizontal direction to jointly form an air guiding structure. The duct assembly 100 is formed by splicing together the first basic duct 110, at least one spliced ​​duct 150, and the second basic duct 130, thereby adapting the duct assembly 100 to situations where the size of the duct assembly 100 configured inside the air conditioner indoor unit 10 is large.

[0045] Compared with related technologies, the air conditioner indoor unit 10 of this embodiment includes a duct assembly 100 comprising a first basic duct 110 and a second basic duct 130. One end of the first basic duct 110 is provided with a first splicing structure 120, and the second basic duct 130 is provided with a second splicing structure 140 at the corresponding end of the first basic duct 110. This allows additional splicing ducts 150 to be spliced ​​between the first basic duct 110 and the second basic duct 130 via the first splicing structure 120 and the second splicing structure 140. Furthermore, the first basic duct 110, the second basic duct 130, and the splicing ducts 150 can be combined to form duct assemblies 100 of multiple sizes, thus eliminating the need to manufacture multiple molds of corresponding sizes. On the other hand, when modifying the indoor unit 10 of the air conditioner, the first basic air duct 110 and the second basic air duct 130 in the original indoor unit 10 can still be reused. By increasing or decreasing the number of splicing air ducts 150 spliced ​​between the first basic air duct 110 and the second basic air duct 130, an air duct assembly 100 with the specifications adapted to the modified indoor unit 10 of the air conditioner can be formed. There is no need to manufacture new injection molds, which greatly reduces the manufacturing or modification cost of the indoor unit 10 of the air conditioner in this embodiment of the utility model, thus solving the problem of excessively high manufacturing or modification costs of air conditioners.

[0046] In some embodiments, the housing 200 of the air conditioner indoor unit 10 is provided with a structure that can cooperate with the first splicing structure 120 and / or the second splicing structure 140. This allows the first basic air duct 110 or the second basic air duct 130 to be directly installed in the housing 200 through the first splicing structure 120 or the second splicing structure 140 when the air conditioner indoor unit 10 only needs to be configured with the first basic air duct 110 or the second basic air duct 130. This eliminates the need to additionally provide a structure on the first basic air duct 110 or the second basic air duct 130 to cooperate with the housing 200, thereby reducing the structural redundancy of the air conditioner indoor unit 10 in this embodiment.

[0047] To make this application easier to understand, the air conditioner indoor unit 10 of this utility model embodiment is further described below in a horizontal and left-right direction. The air conditioner having the air conditioner indoor unit 10 of this utility model embodiment can be a fan coil air conditioner.

[0048] In some embodiments, such as Figures 1-7As shown, the first splicing structure 120 includes one or more first slots 121 disposed at one end of the first base air duct 110 near the second base air duct 130, that is, one or more first slots 121 are disposed at the right end of the first base air duct 110. The second splicing structure 140 includes one or more first buckles 141 disposed at the corresponding ends of the second base air duct 130 and the first base air duct 110, that is, one or more first buckles 141 are disposed at the left end of the second base air duct 130, and the first buckles 141 are engaged with the first slots 121.

[0049] In other words, a first slot 121 is provided at the right end of the first basic air duct 110, and a first buckle 141 is provided at the left end of the second basic air duct 130. When the left end of the second basic air duct 130 is spliced ​​with the right end of the first basic air duct 110, one first slot 121 engages with one first buckle 141 to fix the first basic air duct 110 and the second basic air duct 130. Multiple first slots 121 are provided at the right end of the first basic air duct 110, and multiple first buckles 141 are provided at the left end of the second basic air duct 130. When the left end of the second basic air duct 130 is spliced ​​with the right end of the first basic air duct 110, multiple first slots 121 engage with multiple first buckles 141 in a one-to-one correspondence to fix the first basic air duct 110 and the second basic air duct 130. This allows the first basic air duct 110 and the second basic air duct 130 to be engaged and fixed, which not only has a simple structure but is also easy to install, thereby improving the assembly efficiency of the first basic air duct 110 and the second basic air duct 130.

[0050] In other embodiments, such as Figures 1-7 As shown, the first splicing structure 120 includes one or more first buckles 141 disposed at one end of the first base air duct 110 near the second base air duct 130. The second splicing structure 140 includes one or more first slots 121 disposed at the corresponding ends of the second base air duct 130 and the first base air duct 110, and the first buckles 141 are snapped into the first slots 121.

[0051] In some embodiments, such as Figures 1-7 As shown, the first splicing structure 120 also includes a plurality of positioning slots 122 disposed at one end of the first basic air duct 110, that is, one or more positioning slots 122 are disposed at the right end of the first basic air duct 110. The second splicing structure 140 also includes a plurality of positioning posts 142 disposed at one end of the second basic air duct 130, that is, one or more positioning posts 142 are disposed at the left end of the second basic air duct 130, and the plurality of positioning posts 142 are inserted one-to-one into the plurality of positioning slots 122.

[0052] Specifically, the positioning post 142 includes a body 144 and a plurality of protruding ribs 143, which are spaced apart along the circumference of the body 144; the outer end of each protruding rib 143 contacts and abuts against the positioning groove 122. When the positioning post 142 is inserted into the positioning groove 122 or when the positioning post 142 is pulled out of the positioning groove 122, air can pass through between the plurality of protruding ribs 143, thereby avoiding excessive resistance when the positioning post 142 is in the positioning groove 122 or when the positioning post 142 is pulled out of the positioning groove 122, thus facilitating the insertion and removal of the positioning post 142.

[0053] Furthermore, each rib 143 includes a first segment and a second segment connected sequentially in the left-right direction, with the first segment located outside the second segment. The height of the first segment decreases in the direction closer to the first air duct frame, while the height of the second segment remains unchanged in the lateral direction. This facilitates the insertion of the positioning post 142 into the positioning groove 122.

[0054] In some embodiments, the first splicing structure 120 further includes a plurality of positioning posts 142 disposed at one end of the first basic air duct 110. The second splicing structure 140 further includes a plurality of positioning slots 122 disposed at one end of the second basic air duct 130, with the plurality of positioning posts 142 being inserted into the plurality of positioning slots 122 in a one-to-one correspondence.

[0055] In some embodiments, such as Figures 1-7 As shown, the first splicing structure 120 also includes a sealing groove 181 disposed at the right end of the first basic air duct 110, and the second splicing structure 140 also includes a sealing protrusion 182 disposed at the left end of the second basic air duct 130, with the sealing protrusion 182 inserted into the sealing groove 181. Thus, after the first basic air duct 110 and the second basic air duct 130 are spliced, the sealing protrusion 182 and the sealing groove 181 cooperate to seal the gap formed after the splicing of the first basic air duct 110 and the second basic air duct 130, thereby preventing airflow leakage from the gap and thus increasing the air volume output of the indoor unit 10.

[0056] In other embodiments, the first splicing structure 120 further includes a sealing protrusion 182 disposed at the right end of the first basic air duct 110, and the second splicing structure 140 further includes a sealing groove 181 disposed at the left end of the second basic air duct 130, with the sealing protrusion 182 inserted into the sealing groove 181. Thus, after the first basic air duct 110 and the second basic air duct 130 are spliced, the sealing protrusion 182 and the sealing groove 181 cooperate to seal the gap formed after the splicing of the first basic air duct 110 and the second basic air duct 130, thereby preventing airflow leakage from the gap and thus increasing the air volume output of the indoor unit 10.

[0057] Furthermore, both the first air guide surface 111 and the second air guide surface 131 are curved surfaces, and the outer contour of the cross-section of the sealing groove 181 and the outer contour of the cross-section of the sealing protrusion 182 are both arc-shaped and adapted to the curved surfaces. This further improves the sealing performance of the air duct assembly 100 formed by splicing the first basic air duct 110 and the second basic air duct 130, and thus further improves the air volume output of the indoor unit 10 of the air conditioner.

[0058] In some embodiments, such as Figures 1-7 As shown, the air duct assembly 100 of this embodiment further includes at least one spliced ​​air duct 150, that is, there are one or more spliced ​​air ducts 150. Each spliced ​​air duct 150 forms a third air guiding surface 151. The spliced ​​air ducts 150 are spliced ​​between the first basic air duct 110 and the second basic air duct 130. By splicing one or more spliced ​​air ducts 150 between the first basic air duct 110 and the second basic air duct 130, air duct assemblies 100 of more sizes and specifications can be formed.

[0059] Specifically, such as Figures 1-7 As shown, the splicing duct 150 has a third splicing structure 160 at one end in the horizontal direction and a fourth splicing structure 170 at the other end in the horizontal direction. The third splicing structure 160 cooperates with the first splicing structure 120, and the fourth splicing structure 170 cooperates with the second splicing structure 140.

[0060] Specifically, the third splicing structure 160 includes a positioning structure, a locking structure, and a sealing structure that are identical to those of the second splicing structure 140. The first splicing structure 120 includes a positioning structure, a locking structure, and a sealing structure that are identical to those of the fourth splicing structure 170.

[0061] For example, such as Figure 1 and Figure 3 As shown, the first splicing structure 120 includes three sealing grooves 181, and the fourth splicing structure 170 also includes three sealing grooves 181, with the three sealing grooves 181 of the fourth splicing structure 170 corresponding to the three sealing grooves 181 of the first splicing structure 120 in their respective positions. Alternatively, the first splicing structure 120 may include two first slots 121, and the fourth splicing structure 170 may also include two first slots 121, with the two first slots 121 of the fourth splicing structure 170 corresponding to the two first slots 121 of the first splicing structure 120 in their respective positions. Yet another example: the first splicing structure 120 may include a sealing protrusion 182, and the fourth splicing structure 170 may also include a sealing protrusion 182, with the sealing protrusion 182 of the fourth splicing structure 170 corresponding to the sealing protrusion 182 of the first splicing structure 120 in its respective position.

[0062] Furthermore, the third splicing structure 160 and the second splicing structure 140 have the same structure. This allows adjacent spliced ​​air ducts 150 to be connected by splicing the third splicing structure 160 and the fourth splicing structure 170.

[0063] In some embodiments, the first basic air duct 110 has a larger lateral dimension than the second basic air duct 130.

[0064] Optionally, the ratio between the lateral dimension of the first basic air duct 110 and the lateral dimension of the second basic air duct 130 is 2 to 5. Optionally, the ratio between the lateral dimension of the first basic air duct 110 and the lateral dimension of the second basic air duct 130 is 4.5 to 2.2. Optionally, the ratio between the lateral dimension of the first basic air duct 110 and the lateral dimension of the second basic air duct 130 is 4 to 3. This allows the first basic air duct 110 and the second basic air duct 130 to be spliced ​​together to form an air duct 150, while also making the size of the second basic air duct 130 smaller, thus reducing the manufacturing cost of the air duct assembly 100.

[0065] The ratio between the lateral dimension of the first basic air duct 110 and the lateral dimension of the second basic air duct 130 is 2, 2.3, 3.2, 3.6, 3.9, 4.1, 4.6, 4.8, or 5.

[0066] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A duct assembly, characterized in that, include: The first basic air duct has a first air guiding surface, and the first basic air duct has a first splicing structure at one end in the horizontal direction. The second basic air duct has a second air guide surface and is located on the same side of the first basic air duct in the horizontal direction; one end of the first air guide surface is connected to the corresponding end of the second air guide surface. The second basic air duct is provided with a second splicing structure at one end corresponding to the first basic air duct, and the first basic air duct and the second basic air duct are spliced ​​and connected through the first splicing structure and the second splicing structure.

2. The air duct assembly according to claim 1, characterized in that, The first basic air duct has a larger dimension in the lateral direction than the second basic air duct has in the lateral direction. The ratio of the dimension of the first basic air duct in the lateral direction to the dimension of the second basic air duct in the lateral direction is 2 to 5.

3. The air duct assembly according to claim 1, characterized in that, The first splicing structure includes one or more first slots disposed at one end of the first basic air duct near the second basic air duct; The second splicing structure includes one or more first buckles disposed at the corresponding ends of the second basic air duct and the first basic air duct; the first buckles are engaged with the first slots.

4. The air duct assembly according to claim 1, characterized in that, The first splicing structure also includes a plurality of positioning slots disposed at one end of the first basic air duct; The second splicing structure also includes a plurality of positioning posts disposed at one end of the second basic air duct, wherein the plurality of positioning posts are inserted into the plurality of positioning slots in a corresponding manner.

5. The air duct assembly according to claim 4, characterized in that, The positioning post includes a body and multiple ribs, which are spaced apart along the circumference of the body; the outer end of each rib contacts and abuts against the positioning groove.

6. The air duct assembly according to claim 5, characterized in that, Each of the ribs includes a first segment and a second segment connected sequentially in the transverse direction, with the first segment being closer to the first basic air duct than the second segment. The height of the first segment decreases in the direction close to the first basic air duct, while the height of the second segment remains unchanged in the lateral direction.

7. The air duct assembly according to claim 1, characterized in that, Further includes: At least one spliced ​​air duct, each of the spliced ​​air ducts forming a third air guiding surface; The spliced ​​air duct is spliced ​​between the first basic air duct and the second basic air duct.

8. The air duct assembly according to claim 7, characterized in that, The splicing duct has a third splicing structure at one end in the horizontal direction and a fourth splicing structure at the other end; the third splicing structure cooperates with the first splicing structure, and the fourth splicing structure cooperates with the second splicing structure.

9. The air duct assembly according to claim 8, characterized in that, The third splicing structure is identical in structure to the second splicing structure; and / or, The fourth splicing structure has the same structure as the first splicing structure.

10. An indoor unit for an air conditioner, characterized in that, include The housing includes an air inlet and an air outlet; The air duct assembly as claimed in any one of claims 1-9; the air duct assembly is configured to guide the airflow entering from the air inlet and blowing it out from the air outlet.

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