Hanging air conditioner

Abstract

The utility model provides an air conditioner hanging machine which comprises a shell and at least one fan assembly, and an air channel is defined by the shell. The fan assembly is arranged in the air duct; the fan assembly comprises an axial flow fan, an air guide ring and an annular pressurizing part; the annular pressurizing part is cylindrical, and the axial flow fan is arranged in the annular pressurizing part; the axial flow fan comprises a plurality of blades, and the outer edge of each blade is connected with the inner wall face of the annular pressurizing piece. The air guide ring is arranged on the peripheral side of the annular pressurizing part. The air outlet volume of the air conditioner hanging machine is large.

Description

Technical Field

[0001] This utility model relates to the technical field of air conditioners, and in particular to a wall-mounted air conditioner. Background Technology

[0002] With the improvement of modern living standards, air conditioners have become an indispensable device in people's daily lives. Wall-mounted air conditioners in related technologies include axial fans and heat exchangers. The axial fan draws indoor air into the unit, where it exchanges heat with the heat exchanger before being blown back into the room, thus regulating the indoor temperature. To improve the airflow efficiency of the axial fan, a guide vane is also provided around its outer periphery. However, due to the blade tip gap between the axial fan and the guide vane, some airflow leaks through this gap during operation, reducing the fan's efficiency and resulting in a smaller airflow volume from the unit. Utility Model Content

[0003] In view of the above problems, this utility model is proposed to provide a wall-mounted air conditioner that overcomes or at least partially solves the above problems.

[0004] The purpose of this utility model is to solve the problem of low air delivery efficiency of axial flow fans, so as to improve the air volume of the air conditioner.

[0005] The present invention relates to a wall-mounted air conditioner unit comprising: a housing defining an air outlet duct; at least one fan assembly disposed within the air outlet duct; the fan assembly comprising an axial fan, a guide ring, and an annular pressure booster; the annular pressure booster being cylindrical, the axial fan being disposed within the annular pressure booster; wherein the axial fan comprises a plurality of blades, the outer edge of each blade being connected to the inner wall surface of the annular pressure booster; and the guide ring being disposed on the outer periphery of the annular pressure booster.

[0006] In some embodiments, in a projection plane perpendicular to the axial direction of the annular booster, the projection of the axial fan is entirely located inside the outer contour of the projection of the annular booster.

[0007] In some embodiments, the upstream end of the annular booster extends from the upstream end of the air guide ring, and the upstream end of the annular booster is provided with an outwardly protruding annular protrusion.

[0008] In some embodiments, the diameter of the outer peripheral contour of the annular protrusion is greater than the diameter of the inner peripheral contour of the upstream end of the air guide ring.

[0009] In some embodiments, a portion of the air guide ring is located upstream of the axial fan, and a portion of the air guide ring is flared.

[0010] In some embodiments, a portion of the inner wall of the air guide ring includes a plurality of guide surfaces, which are sequentially connected in the circumferential direction of the axial fan; each guide surface is inclined relative to the axial direction of the air guide ring, and the upstream side of each guide surface is closer to the axial fan in the radial direction of the axial fan than its downstream side.

[0011] In some embodiments, there are multiple fan assemblies, and the multiple fan assemblies are arranged sequentially in a direction perpendicular to the extension of the air duct.

[0012] In some embodiments, there are two fan assemblies, with the air guide ring of one fan assembly connected to the air guide ring of the other fan assembly, and the outer peripheral contour formed by the air guide ring and the other air guide ring is adapted to the inner wall surface of the air duct.

[0013] In some embodiments, the housing includes a back plate located upstream of the axial fan. The back plate includes a wall-mounted portion and an annular air inlet portion connected together. The wall-mounted portion is located away from the fan assembly relative to the annular air inlet portion. The annular air inlet portion is inclined relative to the wall-mounted portion and has at least one air inlet that communicates with the air duct.

[0014] In some embodiments, the fan assembly further includes an air guide grille located on the outlet side of the axial fan and connected to the air guide ring; the air guide grille includes a plurality of concentrically arranged annular air guide elements, which are spaced apart radially from each other on the air guide ring.

[0015] In this embodiment of the air conditioner, an annular pressure booster is provided on the outer periphery of the axial fan, and the inner wall of the annular pressure booster is connected to the outer edge of each blade of the axial fan. This annular pressure booster prevents airflow from leaking radially along the axial fan through the blade tip gap, reducing radial flow loss and increasing the circumferential flow efficiency of the airflow. This increases the air volume and static pressure of the axial fan, thus improving the airflow of the air conditioner. Furthermore, the air guide ring allows airflow to pass more evenly through the axial fan, further improving the air delivery efficiency and increasing the airflow of the air conditioner.

[0016] 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

[0017] 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:

[0018] Figure 1 This is a schematic structural diagram of the wall-mounted air conditioner unit according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic structural diagram of the fan assembly according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic structural diagram of the wall-mounted air conditioner unit according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic structural diagram of the fan assembly according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic structural diagram of the fan assembly according to an embodiment of the present utility model;

[0023] Figure 6 This is a schematic structural diagram of the fan assembly according to an embodiment of the present utility model;

[0024] Figure 7 This is a schematic structural diagram of the wall-mounted air conditioner unit according to an embodiment of the present utility model.

[0025] Figure label:

[0026] 100 housing; 110 air duct; 120 back plate; 121 wall-mounted part; 122 annular air inlet; 130 air inlet; 140 annular boss; 200 axial fan; 210 blades; 300 air guide ring; 310 air intake section; 311 outlet end; 320 wind baffle section; 321 outlet end; 322 inlet end; 323 guide surface; 330 annular folded edge; 400 annular pressure booster; 410 upstream end; 420 annular protrusion; 600 heat exchanger. Detailed Implementation

[0027] The following reference Figures 1 to 7This description pertains to an air conditioner unit according to an embodiment 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] The following describes an embodiment of the wall-mounted air conditioner of this utility model with reference to the accompanying drawings.

[0032] like Figures 1-7 As shown, the wall-mounted air conditioner of this embodiment includes a housing 100 and at least one fan assembly. The housing 100 defines an air outlet duct 110, through which indoor air can enter the air outlet duct 110, flow through the air outlet duct 110, and then be blown back into the room from the air outlet duct 110.

[0033] One or more fan assemblies are installed within the air duct 110. The fan assembly includes an axial fan 200, an air guide ring 300, and an annular pressure booster 400.

[0034] The axial fan 200 is configured to promote the formation of airflow entering and exiting the housing 100. The axial fan 200 has a large air delivery range, allowing the airflow it promotes to be distributed relatively evenly within the air duct 110, resulting in more uniform airflow. Furthermore, the axial fan 200 generates less vibration during operation, resulting in lower noise levels. Therefore, the air conditioner unit of this embodiment provides a better user experience during operation.

[0035] The annular booster 400 is cylindrical, and the axial fan 200 is disposed in the annular booster 400. The axial fan 200 includes multiple blades 210, which are spaced apart circumferentially along the axial fan 200, and the outer edge of each blade 210 is connected to the inner wall surface of the annular booster 400.

[0036] The air guide ring 300 is located on the outer periphery of the annular pressurizing component 400 so that the air guide ring 300 guides the airflow to enter the axial fan 200 evenly, avoiding the problem of airflow backflow, thus improving the air delivery efficiency of the axial fan 200.

[0037] Compared with related technologies, the air conditioner of this embodiment features an annular pressure booster 400 on the outer periphery of its axial fan 200, with the inner wall of the annular pressure booster 400 connected to the outer edge of each blade 210 of the axial fan 200. This annular pressure booster 400 prevents airflow from leaking radially along the axial fan 200 through the blade tip gap, reducing radial flow loss and increasing the circumferential flow efficiency of the airflow in the axial direction of the axial fan 200. This increases the air volume and static pressure of the axial fan 200, thus improving the airflow of the air conditioner of this embodiment. Furthermore, the air guide ring 300 allows for more even airflow through the axial fan 200, further improving the air delivery efficiency of the axial fan 200 and increasing the airflow of the air conditioner of this embodiment.

[0038] like Figures 1-3 As shown, the wall-mounted air conditioner of this embodiment includes a housing 100, a fan assembly, and a heat exchanger 600. The heat exchanger 600 is disposed inside the housing 100 and is used to exchange heat with the airflow flowing into the housing 100.

[0039] When there is only one fan assembly, the fan assembly is located upstream of the heat exchanger 600. Alternatively, the fan assembly is located downstream of the heat exchanger 600.

[0040] When there are multiple fan assemblies, all fan assemblies are located upstream of heat exchanger 600. Alternatively, all fan assemblies are located downstream of heat exchanger 600. For example... Figure 3 As shown, there are two fan assemblies, both located on the upstream side of heat exchanger 600, and the two fan assemblies are arranged sequentially in the horizontal direction.

[0041] In some embodiments, in a projection plane perpendicular to the axial direction of the annular booster 400, the projection of the axial fan 200 is entirely located inside the outer contour of the projection of the annular booster 400. That is, the axial fan 200 is completely disposed inside the annular booster 400. When the axial fan 200 is operating, the annular booster 400 can guide the airflow entering the axial fan 200, allowing the airflow to enter the area of ​​the axial fan 200 more smoothly. This helps to reduce turbulence and eddies in the airflow at the inlet side of the axial fan 200, thereby reducing energy loss and further improving the air delivery efficiency of the axial fan 200.

[0042] In some embodiments, such as Figure 2 and Figure 3 As shown, the upstream end 410 of the annular booster 400 extends from the upstream end 410 of the air guide ring 300. The upstream end 410 of the annular booster 400 is provided with an outwardly protruding annular protrusion 420. That is, the annular protrusion 420 is provided at the upstream end 410 of the air guide ring 300, and the annular protrusion 420 is spaced apart from the upstream end 410 of the air guide ring 300 by a certain distance, so that the annular booster 400 can rotate freely relative to the air guide ring 300. Thus, by providing the annular protrusion 420 at the upstream end 410 of the annular booster 400 and placing the annular protrusion 420 upstream of the air guide ring 300, the annular protrusion 420 can block a portion of the airflow backflow, thereby further improving the air delivery efficiency of the axial fan 200.

[0043] Furthermore, the diameter of the outer peripheral contour of the annular protrusion 420 is larger than the diameter of the inner peripheral contour of the upstream end 410 of the air guide ring 300. That is, in the projection plane perpendicular to the axial direction of the annular booster 400, the projection of the inner peripheral contour of the upstream end 410 of the air guide ring 300 is completely located inside the projection of the outer peripheral contour of the annular protrusion 420, thereby giving the annular protrusion 420 a better effect in blocking airflow backflow.

[0044] In some embodiments, such as Figure 2 and Figure 3As shown, a portion of the air guide ring 300 is located upstream of the axial fan 200, and a portion of the air guide ring 300 is flared.

[0045] Specifically, the air guide ring 300 has an air intake section 310 and a wind deflector section 320. At least a portion of the axial fan 200 is disposed in the air intake section 310, thereby allowing the airflow to pass more evenly through the blades 210 of the axial fan 200 and improving the air delivery efficiency of the axial fan 200. The axial direction of the air intake section 310 is consistent with the extension direction of the air duct 110. The air intake section 310 guides the airflow, so that the airflow blown out from the air intake section 310 flows directly to the air outlet of the air duct 110, thereby reducing wind loss and further improving the air delivery efficiency of the axial fan 200.

[0046] The windbreak section 320 is flared, meaning that the outer contour dimension of the inlet end 322 of the windbreak section 320 is smaller than the outer contour dimension of the outlet end 321 of the windbreak section 320, and the windbreak section 320 faces the air outlet end of the air duct 110. The windbreak section 320 is connected to the air intake section 310, and the inlet end 322 of the windbreak section 320 is connected to the outlet end 311 of the air intake section 310.

[0047] When the airflow on the outer periphery of the axial fan 200 tends to flow back, the baffle section 320 can not only bring back the airflow of that part, but also guide the airflow of that part toward the air outlet of the duct 110, thereby increasing the air delivery efficiency of the axial fan 200.

[0048] In addition, the air guide section 310 of the air guide ring 300 allows the airflow to pass more evenly through the blades 210 of the axial fan 200, thereby further improving the air delivery efficiency of the axial fan 200 and increasing the air volume of the air conditioner in this embodiment of the present invention.

[0049] In some embodiments, such as Figures 3-6 As shown, a portion of the inner wall of the air guide ring 300 includes a plurality of air guide surfaces 323, which are connected sequentially in the circumferential direction of the axial fan 200; each air guide surface 323 is inclined relative to the axial direction of the air guide ring 300, and the upstream side of each air guide surface 323 is closer to the axial fan 200 in the radial direction of the axial fan 200 relative to its downstream side.

[0050] In other words, the inner wall of the windbreak section 320 is composed of multiple guide surfaces 323. Compared with the inner wall of the windbreak section 320 formed by a curved surface, multiple guide surfaces 323 can reduce the turbulence and vortex of the airflow in the windbreak section 320, so that the airflow passes through the windbreak section 320 more stably, thereby reducing wind loss and further improving the air delivery efficiency of the axial fan 200.

[0051] In some other embodiments, the windbreak section 320 may also be flared, wherein the inner wall surface of the windbreak section 320 is an arc surface, and the axial direction of the arc surface is consistent with the axial direction of the windbreak section 320.

[0052] In some embodiments, such as Figures 3-6 As shown, when there are multiple fan assemblies, the multiple fan assemblies are arranged sequentially in the extension direction perpendicular to the air duct 110. Thus, air is delivered by the axial flow fans 200 in the multiple fan assemblies, increasing the air volume of the air conditioner in this embodiment, and the simultaneous air delivery by the axial flow fans 200 in the multiple fan assemblies makes the air outlet more uniform.

[0053] Specifically, there are two fan assemblies. The air guide ring 300 of one fan assembly is connected to the air guide ring 300 of the other fan assembly, and the outer periphery formed by the two air guide rings 300 is adapted to the inner wall surface of the air duct 110. Thus, through the cooperation of the annular boss 140 and the annular flange 330, there is no gap between the inner wall of the air duct 110 and the baffle section 320 that allows airflow to flow back, so that the baffle section 320 can completely block the airflow back, thereby further improving the air delivery efficiency of the axial fan 200.

[0054] For example Figures 1-4 As shown, the inner wall of the air duct 110 has a rectangular outline, and the outer outlines of one air guide ring 300 and the other air guide ring 300 are both rectangular. The overall outer outline formed by connecting the side edges of one air guide ring 300 and the side edges of the other air guide ring 300 is adapted to the outline of the inner wall of the air duct 110.

[0055] In some embodiments, such as Figures 1-4 As shown, the outlet end 321 of the baffle section 320 is connected to the inner wall of the air duct 110, and the outer periphery of the outlet end 321 of the baffle section 320 is adapted to the inner wall of the air duct 110. In other words, the outer periphery of the outlet end 321 of the baffle section 320 can fit snugly against the inner wall of the air duct 110, so that the baffle section 320 can completely block the airflow backflow, thereby further improving the air delivery efficiency of the axial fan 200.

[0056] For example, the inner wall of the air duct 110 has a circular outline, the outer periphery of the outlet end 321 of the windbreak section 320 is also circular, and the dimensions of the inner wall of the air duct 110 and the outer periphery of the outlet end 321 of the windbreak section 320 are approximately the same.

[0057] For example, the inner wall of the air duct 110 has a rectangular outline, and the outer periphery of the outlet end 321 of the windbreak section 320 is also rectangular. Furthermore, the width and length dimensions of the inner wall of the air duct 110 are approximately the same as the width and length dimensions of the outer periphery of the outlet end 321 of the windbreak section 320.

[0058] Specifically, such as Figure 2 and Figure 4 As shown, an annular boss 140 is provided on the inner wall of the air duct 110, and the outlet end 321 of the baffle section 320 has an outwardly extending annular flange 330, which is connected to the annular boss 140. Thus, through the cooperation of the annular boss 140 and the annular flange 330, there is no gap between the inner wall of the air duct 110 and the baffle section 320 that allows airflow recirculation, enabling the baffle section 320 to completely block airflow recirculation, thereby further improving the air delivery efficiency of the axial fan 200.

[0059] Furthermore, such as Figure 2 and Figure 4 As shown, the heat exchanger 600 is disposed in the annular boss 140, and the outer peripheral surface of the heat exchanger 600 is completely in contact with the inner wall surface of the annular boss 140. This ensures that all the airflow blown out of the baffle section 320 passes through the heat exchanger 600, thus greatly improving the heat exchange efficiency of the heat exchanger 600.

[0060] In other embodiments, the heat exchanger 600 is disposed in the air duct 110 and located downstream of the baffle section 320, so that the heat exchanger 600 exchanges heat with the airflow; the outlet end 321 of the baffle section 320 directly contacts the edge of the heat exchanger 600. That is, the baffle section 320 is directly covered on the front surface of the heat exchanger 600, and the outer periphery of the outlet end 321 of the baffle section 320 is adapted to the edge of the heat exchanger 600, so that all the airflow blown out by the baffle section 320 passes through the heat exchanger 600, thereby greatly improving the heat exchange efficiency of the heat exchanger 600.

[0061] In some embodiments, the distance between the heat exchanger 600 and the axial fan 200 is 20-40 mm. On the one hand, this ensures that the airflow has sufficient distance to diffuse after passing through the axial fan 200, allowing the airflow to contact the heat exchanger 600 more evenly, thereby improving the heat exchange efficiency of the heat exchanger 600. On the other hand, it avoids an excessively large distance between the heat exchanger 600 and the axial fan 200, reducing structural redundancy in the air conditioner unit of this embodiment and making the overall size of the air conditioner unit of this embodiment smaller.

[0062] The spacing between the heat exchanger 600 and the axial fan 200 includes, but is not limited to, 20mm, 23mm, 27mm, 30mm, 32mm, 35mm, 39mm or 40mm.

[0063] In some embodiments, the housing 100 further includes an air outlet, and the distance between the air outlet and the heat exchanger 600 is 40-70mm. This avoids an excessively large distance between the heat exchanger 600 and the air outlet, reduces structural redundancy in the air conditioner unit of this embodiment, and makes the overall size of the air conditioner unit of this embodiment smaller.

[0064] The distance between the air outlet and the heat exchanger 600 includes, but is not limited to, 40mm, 45mm, 47mm, 50mm, 53mm, 60mm, 67mm or 70mm.

[0065] In some embodiments, such as Figure 1 and Figure 7 As shown, the housing 100 includes a back plate 120 located upstream of the axial fan 200. The back plate 120 includes a wall-mounted portion 121 and an annular air inlet portion 122, which are connected. The wall-mounted portion 121 is located away from the fan assembly relative to the annular air inlet portion 122. The annular air inlet portion 122 is inclined relative to the wall-mounted portion 121 and has at least one air inlet 130 connected to the air duct 110. The outer contour dimension of the annular air inlet portion 122 gradually decreases in the direction away from the axial fan 200. When the housing 100 is installed on the wall, the wall-mounted portion 121 contacts the wall. Because the annular air inlet portion 122 is inclined relative to the wall-mounted portion 121, there is a certain air intake space between the annular air inlet portion 122 and the wall, ensuring that the air inlet 130 can smoothly intake air.

[0066] In some embodiments, such as Figures 4-6 As shown, the fan assembly also includes an air guide grille 500, located on the outlet side of the axial fan 200, and connected to the air guide ring 300. The air guide grille 500 includes multiple concentrically arranged annular air guide elements 510, spaced radially apart from the air guide ring 300. The air guide grille 500 also includes multiple straight air guide strips, spaced axially along the air guide grille 500.

[0067] Understandably, during the operation of the axial fan 200, the airflow distribution on the inlet or outlet side of the axial fan 200 may be uneven due to the centrifugal force and frictional resistance generated by the rotation of the blades 210. Installing air guide grilles 500 on the inlet and / or outlet sides of the axial fan 200 can improve airflow distribution and thus enhance the air delivery efficiency of the axial fan 200.

[0068] 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 wall-mounted air conditioner, characterized in that, include: Housing, the housing defining an air outlet duct; At least one fan assembly is disposed in the air duct; the fan assembly includes an axial fan, a guide ring, and an annular pressurizing component; the annular pressurizing component is cylindrical, and the axial fan is disposed in the annular pressurizing component; wherein, the axial fan includes multiple blades, and the outer edge of each blade is connected to the inner wall surface of the annular pressurizing component; the guide ring is disposed on the outer periphery of the annular pressurizing component.

2. The wall-mounted air conditioner according to claim 1, characterized in that, In a projection plane perpendicular to the axial direction of the annular booster, the projection of the axial fan is entirely located inside the outer contour of the projection of the annular booster.

3. The wall-mounted air conditioner according to claim 1, characterized in that, The upstream end of the annular pressurizing component extends from the upstream end of the air guide ring, and the upstream end of the annular pressurizing component is provided with an outwardly protruding annular protrusion.

4. The wall-mounted air conditioner according to claim 3, characterized in that, The diameter of the outer periphery of the annular protrusion is larger than the diameter of the inner periphery of the upstream end of the air guide ring.

5. The wall-mounted air conditioner according to claim 1, characterized in that, A portion of the air guide ring is located upstream of the axial fan, and a portion of the air guide ring is flared.

6. The wall-mounted air conditioner according to claim 5, characterized in that, The inner wall of a portion of the air guide ring includes multiple air guide surfaces, which are sequentially connected in the circumferential direction of the axial fan; each air guide surface is inclined relative to the axial direction of the air guide ring, and the upstream side of each air guide surface is closer to the axial fan in the radial direction of the axial fan than its downstream side.

7. The wall-mounted air conditioner according to claim 1, characterized in that, There are multiple fan assemblies, and the multiple fan assemblies are arranged sequentially in a direction perpendicular to the extension of the air duct.

8. The wall-mounted air conditioner according to claim 1, characterized in that, The fan assembly consists of two components, with the air guide ring of one fan assembly connected to the air guide ring of the other fan assembly, and the outer periphery formed by the air guide ring and the other air guide ring being adapted to the inner wall surface of the air duct.

9. The wall-mounted air conditioner according to claim 1, characterized in that, The housing includes a back plate located upstream of the axial fan. The back plate includes a wall-mounted portion and an annular air inlet portion. The wall-mounted portion and the annular air inlet portion are connected, and the wall-mounted portion is farther away from the fan assembly relative to the annular air inlet portion. The annular air inlet portion is inclined relative to the wall-mounted portion and has at least one air inlet, which is connected to the air duct.

10. The wall-mounted air conditioner according to claim 1, characterized in that, The fan assembly also includes an air guide grille, which is located on the air outlet side of the axial fan and is connected to the air guide ring. The air guide grille includes a plurality of concentrically arranged annular air guide elements, which are spaced apart radially from each other on the air guide ring.

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