Wall-mounted air conditioner indoor unit and air conditioning system

Abstract

The embodiment of the utility model provides a wall-mounted air conditioner indoor unit and an air conditioning system. The wall-mounted air conditioner indoor unit comprises a machine shell and a front panel. The machine shell comprises a rear plate, a top plate and a bottom plate. The top plate and the bottom plate are arranged at intervals in the height direction, the rear plate is arranged between the top plate and the bottom plate, the machine shell is provided with an open end opposite to the rear plate, an upper air outlet is formed in the top plate, and a lower air outlet is formed in the bottom plate. The front panel is movably arranged relative to the machine shell so that a first air inlet or a second air inlet can be formed between the bottom end of the front panel and the machine shell. The wall-mounted air conditioner indoor unit has a refrigerating mode and a heating mode, in the refrigerating mode, the position between the bottom end of the front panel and the machine shell is opened to form a first air inlet, and airflow enters the machine shell from the first air inlet and flows out through the upper air outlet. In the heating mode, a second air inlet is formed between the top end of the front panel and the machine shell, and airflow enters the machine shell from the second air inlet and flows out through the lower air outlet.

Description

Technical Field

[0001] This application relates to the field of air conditioning, and in particular to a wall-mounted air conditioner indoor unit and air conditioning system. Background Technology

[0002] Conventional wall-mounted air conditioner indoor units use a single air outlet structure, with the outlet located on the bottom side of the unit. Both cooling and heating air are blown out through this outlet. Because the outlet is located at the bottom of the unit, in cooling mode, the cold air can easily blow directly onto people, causing discomfort and potentially leading to air conditioning sickness over time. Even adjusting the angle of the air deflector to change the airflow direction cannot completely solve this problem.

[0003] It should be noted that the statements in this background section only provide background information relevant to this application and do not necessarily constitute prior art. Utility Model Content

[0004] This application provides a wall-mounted air conditioner indoor unit and an air conditioning system to improve user comfort.

[0005] The first aspect of this application provides a wall-mounted air conditioner indoor unit, comprising:

[0006] The housing includes a rear panel, a top panel, and a bottom panel. The top and bottom panels are spaced apart in the height direction, and the rear panel is positioned between the top and bottom panels. The housing has an open end opposite to the rear panel. An upper air outlet is provided on the top panel, and a lower air outlet is provided on the bottom panel.

[0007] The front panel is located at the open end and is movably disposed relative to the housing so that the bottom end of the front panel opens between the housing to form a first air inlet or the top end of the front panel opens between the housing to form a second air inlet.

[0008] The indoor unit of the wall-mounted air conditioner has a cooling mode and a heating mode. In cooling mode, the bottom of the front panel opens between the front panel and the casing to form a first air inlet, and the airflow enters the casing through the first air inlet and flows out through the upper air outlet. In heating mode, the top of the front panel opens between the front panel and the casing to form a second air inlet, and the airflow enters the casing through the second air inlet and flows out through the lower air outlet.

[0009] In some embodiments, the wall-mounted air conditioner indoor unit further includes at least two telescopic mechanisms spaced apart in the height direction of the casing. The first end of the telescopic mechanism is connected to the casing, and the second end of the telescopic mechanism is connected to the front panel. The first end and the second end of the telescopic mechanism are telescopically connected. A portion of the at least two telescopic mechanisms retracts while the other portion extends to control the bottom or top end of the front panel to leave the casing to open the first air inlet or the second air inlet.

[0010] In some embodiments, the telescopic mechanism includes a push rod and a gear for driving the push rod to move. The edge of the push rod is provided with a rack that meshes with the gear. The gear is configured to rotate about its own axis to drive the rack to move, thereby driving the push rod to move.

[0011] In some embodiments, the bottom of the front panel is opened between the front panel and the casing to form a first air inlet. The wall-mounted air conditioner indoor unit also includes a first lower air outlet wall and a second lower air outlet wall disposed in the casing. The first lower air outlet wall and the second lower air outlet wall are respectively located on the front and rear sides of the lower air outlet to form a lower air outlet duct. In heating mode, the bottom of the front panel abuts against the bottom of the first lower air outlet wall to seal and close the first air inlet.

[0012] In some embodiments, a second air inlet is formed between the top of the front panel and the top plate of the housing. The top plate includes a top plate body and a bent section disposed at the front end of the top plate body and bent relative to the top plate body. The bent section is inclined downward relative to the top plate body. In cooling mode, the top of the front panel abuts against the bent end face between the bent section and the top plate body to seal and close the second air inlet.

[0013] In some embodiments, the wall-mounted air conditioner indoor unit further includes a first air guide plate disposed at the upper air outlet, the first air guide plate being rotatably configured to open or close the upper air outlet, and when the upper air outlet is opened, the first air guide plate is located within the air outlet channel of the upper air outlet; and / or, the wall-mounted air conditioner indoor unit further includes a second air guide plate disposed at the lower air outlet, the second air guide plate being rotatably configured to open or close the lower air outlet, and when the lower air outlet is opened, the second air guide plate is located within the air outlet channel of the lower air outlet.

[0014] In some embodiments, the indoor unit of the wall-mounted air conditioner further includes a duct assembly disposed within the casing. The duct assembly includes a duct structure and a cross-flow fan blade disposed within the duct structure. The duct structure includes a duct wall and a volute. The duct structure is configured to be rotatable to switch between a first rotation position and a second rotation position. In cooling mode, the duct structure rotates to the first rotation position so that airflow entering the casing from the first air inlet flows through the duct structure to the upper air outlet. In heating mode, the duct structure rotates to the second rotation position so that airflow entering the casing from the second air inlet flows through the duct structure to the lower air outlet.

[0015] In some embodiments, the duct structure further includes a turntable, with the duct wall and volute disposed on the turntable, which is rotatably configured to drive the duct wall and volute to rotate together.

[0016] In some embodiments, the turntable includes an annular gear ring, and the air duct assembly further includes an internal gear meshing with the annular gear ring and a drive mechanism. The internal gear is meshed inside the annular gear ring and configured to rotate under the drive of the drive mechanism to drive the turntable to rotate.

[0017] In some embodiments, the turntable further includes an annular guide groove located radially inside the annular gear ring, and the internal gear is disposed within the annular guide groove.

[0018] In some embodiments, the air duct assembly further includes a fixed disk, a turntable rotatably disposed on the fixed disk, and the turntable further includes two bearing gasket limiting grooves spaced apart at the radial outer edge and located on both sides of the thickness of the turntable, the bearing gasket limiting grooves being used to accommodate bearing gaskets.

[0019] In some embodiments, the indoor unit of the wall-mounted air conditioner further includes a first lower air outlet wall, a second lower air outlet wall, and an air duct baffle disposed within the casing. The first lower air outlet wall and the second lower air outlet wall are respectively located on the front and rear sides of the lower air outlet to form a lower air outlet duct. The air duct baffle is rotatable relative to the casing. In cooling mode, the air duct baffle rotates so that the air duct baffle abuts against the second lower air outlet wall and covers the air outlet surface of the lower air outlet duct to block airflow. In heating mode, the air duct baffle rotates so that both ends of the air duct baffle abut against the volute tongue and the first lower air outlet wall respectively to form an air duct surface.

[0020] In some embodiments, the outer wall surface of the volute tongue is provided with a first limiting rib, and the outer wall surface of the air duct baffle is provided with a second limiting rib. In the second rotation position, the second limiting rib abuts against the first limiting rib to prevent the air duct baffle from continuing to rotate.

[0021] In some embodiments, the duct wall is an arc-shaped plate, and the duct wall includes an arc-shaped reinforcing rib disposed on the outer wall surface and extending along the arc-shaped extension direction of the arc-shaped plate and / or a transverse reinforcing rib disposed on the outer wall surface and extending along the width direction of the arc-shaped plate; and / or, the outer wall surface of the volute tongue is provided with reinforcing ribs.

[0022] A second aspect of this application provides an air conditioning system, including an outdoor unit and the aforementioned wall-mounted indoor unit.

[0023] Based on the technical solution of this application, a wall-mounted air conditioner indoor unit includes a casing and a front panel. The casing includes a rear panel, a top panel, and a bottom panel. The top panel and bottom panel are spaced apart in the height direction, with the rear panel positioned between the top and bottom panels. The casing has an open end opposite to the rear panel. An upper air outlet is provided on the top panel, and a lower air outlet is provided on the bottom panel. The front panel is located at the open end and is movably disposed relative to the casing such that the bottom of the front panel opens to form a first air inlet, or the top of the front panel opens to form a second air inlet. The wall-mounted air conditioner indoor unit has a cooling mode and a heating mode. In cooling mode, the bottom of the front panel opens to form the first air inlet, and airflow enters the casing through the first air inlet and exits through the upper air outlet. In heating mode, the top of the front panel opens to form the second air inlet, and airflow enters the casing through the second air inlet and exits through the lower air outlet. The wall-mounted air conditioner indoor unit of this application embodiment has an upper air outlet on the top plate and a lower air outlet on the bottom plate. In cooling mode, air is discharged from the upper air outlet to avoid cold air blowing directly on the human body and causing discomfort; and in heating mode, air is discharged from the lower air outlet, so that hot air can reach the ground directly through the lower air outlet to achieve the purpose of quickly warming the room.

[0024] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 This is a schematic diagram of the internal structure of a wall-mounted air conditioner indoor unit when it is turned off, according to some embodiments of this application.

[0027] Figure 2 This is a schematic diagram of the internal structure of a wall-mounted air conditioner indoor unit in cooling mode according to some embodiments of this application.

[0028] Figure 3 This is a schematic diagram of the internal structure of a wall-mounted air conditioner indoor unit in heating mode according to some embodiments of this application.

[0029] Figure 4 This is a schematic diagram of the air duct assembly of a wall-mounted air conditioner indoor unit according to some embodiments of this application.

[0030] Figure 5 for Figure 4 The diagram shows the exploded structure of the air duct assembly.

[0031] Figure 6 for Figure 4A schematic diagram of the stroke duct structure from one angle.

[0032] Figure 7 for Figure 4 A schematic diagram of the stroke channel structure from another angle.

[0033] Figure 8 for Figure 7 A magnified schematic diagram of the structure of part M in the middle.

[0034] Figure 9 and Figure 10 for Figure 4 A schematic diagram of the structure of the stroke channel at different angles.

[0035] Figure 11 and Figure 12 This is a schematic diagram of the internal structure of a wall-mounted air conditioner indoor unit in cooling mode, according to some other embodiments of this application.

[0036] Figure 13 and Figure 14 This is a schematic diagram of the internal structure of a wall-mounted air conditioner indoor unit in heating mode, according to some other embodiments of this application.

[0037] Figure 15 for Figure 11 A three-dimensional structural diagram of the telescopic mechanism in the image.

[0038] Figure 16 for Figure 11 An exploded view of the telescopic mechanism.

[0039] Figure label:

[0040] 1. Housing; 11. Rear panel; 12. Top panel; 121. Upper air outlet; 122. Bending section; 1221. Bending end face; 13. Base plate; 131. Lower air outlet; 15. First upper air outlet wall; 16. Second upper air outlet wall; 17. First lower air outlet wall; 18. Second lower air outlet wall;

[0041] 2. Air duct components;

[0042] 21. Air duct structure;

[0043] 211. Air duct wall; 2111. Arc-shaped reinforcing rib; 2112. Transverse reinforcing rib; 2113. Third limiting rib;

[0044] 212. Coil tongue; 2121. First limiting rib; 2122. Limiting step;

[0045] 213. Turntable; 2131. Annular gear ring; 2132. Bearing gasket limiting groove; 2133. Annular guide groove; 2134. Central through hole;

[0046] 214. Fan bearings;

[0047] 215. Bearing pad;

[0048] 216. Internal gear;

[0049] 217. Stepper motor;

[0050] 218. Left fixing plate; 2181. Upper left fixing plate; 2182. Lower left fixing plate;

[0051] 219. Right fixing plate; 2191. Upper right fixing plate; 2192. Lower right fixing plate;

[0052] 22. Crossflow fan blades;

[0053] 23. Drive motor;

[0054] 24. Motor housing; 241. Upper motor housing; 242. Lower motor housing;

[0055] 3. Front panel; 31. First air inlet; 32. Second air inlet;

[0056] 4. Heat exchanger;

[0057] 5. Air duct baffle; 51. Second limiting rib;

[0058] 6. First air guide plate;

[0059] 7. Second air guide plate;

[0060] 8. Telescopic mechanism;

[0061] 81. Stepper motor; 82. Driver housing cover; 83. Gear; 84. Push rod; 85. Bearing pad; 86. Mounting base;

[0062] X: length direction; Y: thickness direction; Z: height direction. Detailed Implementation

[0063] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0064] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0065] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0066] Wall-mounted air conditioner indoor units connect to outdoor units to regulate indoor air temperature by cooling or heating. The indoor unit includes a heat exchanger; in cooling mode, the heat exchanger acts as an evaporator, absorbing heat from the air to cool; in heating mode, the heat exchanger acts as a condenser, releasing heat to the air to heat. Wall-mounted air conditioner indoor units are typically installed on a wall, near the ceiling.

[0067] In related technologies, wall-mounted air conditioner indoor units, whether in heating or cooling mode, vent air through an air outlet located at the bottom of the unit. This means that in cooling mode, the cold air can easily blow directly onto people, causing discomfort, and prolonged exposure to cold air can easily lead to air conditioning sickness.

[0068] To address the aforementioned issues, this application proposes a wall-mounted air conditioner indoor unit. This indoor unit includes an upper air outlet on the top plate and a lower air outlet on the bottom plate. By controlling the rotation of the air duct structure, the outlet of the air duct formed between the air duct wall and the volute tongue is directed towards either the upper or lower air outlet. In cooling mode, air is selected to exit from the upper air outlet, thereby avoiding direct cold air blowing and improving user comfort.

[0069] The following is for reference. Figures 1 to 10 The structure and operation of the wall-mounted air conditioner indoor unit of some embodiments of this application will be described in detail.

[0070] refer to Figures 1 to 10 The wall-mounted air conditioner indoor unit provided in some embodiments of this application includes a housing 1 and a front panel 3. The housing 1 includes a rear panel 11, a top panel 12, and a bottom panel 13. The top panel 12 and the bottom panel 13 are spaced apart in the height direction Z, and the rear panel 11 is disposed between the top panel 12 and the bottom panel 13. The housing 1 has an open end opposite to the rear panel 11. An upper air outlet 121 is provided on the top panel 12, and a lower air outlet 131 is provided on the bottom panel 13. The front panel 3 is disposed at the open end and is movably disposed relative to the housing 1 such that the bottom end of the front panel 3 opens between the housing 1 to form a first air inlet 31, or the top end of the front panel 3 opens between the housing 1 to form a second air inlet 32.

[0071] The wall-mounted air conditioner indoor unit has a cooling mode and a heating mode. In cooling mode, the bottom of the front panel 3 opens between itself and the casing 1 to form a first air inlet 31, and airflow enters the casing 1 through the first air inlet 31 and flows out through the upper air outlet 121. In heating mode, the top of the front panel 3 opens between itself and the casing 1 to form a second air inlet 32, and airflow enters the casing 1 through the second air inlet 32 ​​and flows out through the lower air outlet 131.

[0072] The wall-mounted air conditioner indoor unit of this embodiment has an upper air outlet 121 on the top plate 12 and a lower air outlet 131 on the bottom plate 13. In cooling mode, air is discharged from the upper air outlet 121 to avoid cold air blowing directly on the body and causing discomfort; and in heating mode, air is discharged from the lower air outlet 131, so that hot air can reach the ground directly through the lower air outlet 131, achieving the purpose of quickly warming the room. Furthermore, the air inlet of the air conditioner indoor unit of this embodiment is formed by the opening of the front panel 3 relative to the casing 1, so that when the air conditioner indoor unit of this embodiment is off, such as... Figure 1 As shown, the top and bottom ends of the front panel 3 abut against the front end of the casing 1. Compared with related technologies that require a certain distance to be reserved for the air inlet and a special baffle to open and close the air inlet, this simplifies the structure of the indoor air conditioning unit. Furthermore, the air inlet is formed by the movement of the front panel 3 relative to the casing 1, thus... Figure 1As shown, in the off state, there is no dedicated air inlet occupying the thickness dimension, thus making the thickness of the air conditioner indoor unit smaller when the unit is off.

[0073] Further, refer to Figure 2 In the cooling mode, the wall-mounted air conditioner indoor unit of this application opens between the bottom of the front panel 3 and the casing 1 to form a first air inlet 31. Thus, in cooling mode, the airflow path is from the first air inlet 31 at the bottom into the casing 1, and after heat exchange by the heat exchanger 4, it flows out through the first air outlet 121 at the top. In other words, the overall airflow path is bottom inlet and top outlet, which makes the airflow path within the casing 1 longer, thus allowing for sufficient heat exchange by the heat exchanger 4, resulting in better cooling performance. Similarly, refer to... Figure 3 In heating mode, the top of the front panel 3 opens between the top of the front panel 3 and the casing 1 to form a second air inlet 32. In this way, the airflow path in heating mode is from the second air inlet 32 ​​at the top into the casing 1 and after heat exchange by the heat exchanger 4, it flows out through the second air outlet 131 at the bottom. That is to say, the overall airflow path is top inlet and bottom outlet, which makes the airflow path in the casing 1 longer, so that the heat exchanger 4 can fully exchange heat, and thus the heating effect is better.

[0074] Furthermore, the distance between the air inlet and air outlet of the wall-mounted air conditioner indoor unit in this embodiment is relatively far, which can avoid mutual interference between the air inlet and outlet.

[0075] refer to Figure 1 , Figure 2 and Figure 3 The heat exchanger 4 and the air duct assembly 2 are arranged sequentially along the thickness direction of the casing 1. In both cooling and heating modes, the air inlet duct 33, heat exchanger 4, and air duct assembly 2 are arranged in sequence, allowing the airflow entering from the air inlet to enter the air inlet duct 33, where it fully exchanges heat with the heat exchanger 4 before entering the air duct assembly 2, thus improving heat exchange efficiency and effect. Furthermore, the air inlet duct 33 and the air outlet are respectively located on both sides of the heat exchanger 4, allowing the airflow to fully exchange heat with the heat exchanger as it flows through it, further enhancing the heat exchange effect.

[0076] refer to Figures 1 to 3 In some embodiments of this application, the front panel 3 is an arc-shaped plate, and the front panel 3 includes arc-shaped segments located at the upper and lower ends respectively, so that when the power is off, the upper and lower ends of the front panel 3 abut against the housing 1 to form a sealed abutment. Moreover, by setting the two ends of the front panel 3 as arc-shaped segments, the arc-shaped segments guide and cover the airflow entering the air inlet duct 33 in both cooling and heating modes.

[0077] refer to Figure 11 and Figure 13In some embodiments, the wall-mounted air conditioner indoor unit further includes at least two telescopic mechanisms 8 spaced apart along the height direction Z of the casing 1. A first end of each telescopic mechanism 8 is connected to the casing 1. A second end of each telescopic mechanism 8 is connected to the front panel 3. The first and second ends of the telescopic mechanisms 8 are telescopically connected. A portion of the at least two telescopic mechanisms 8 retracts while the other portion extends to control the bottom or top end of the front panel 3 to move away from the casing 1, thereby opening the first air inlet 31 or the second air inlet 32.

[0078] Specifically, such as Figure 11 and Figure 13 As shown, the first telescopic mechanism of at least two telescopic mechanisms is connected to the front panel 3 near the top, and the second telescopic mechanism is connected to the front panel 3 near the bottom. When the first telescopic mechanism is retracted and the second telescopic mechanism is extended, the bottom of the front panel 3 opens relative to the housing 1, thereby opening the first air inlet 31. When the first telescopic mechanism is opened and the second telescopic mechanism is retracted, the top of the front panel 3 opens relative to the housing 1, thereby opening the second air inlet 32.

[0079] The wall-mounted air conditioner indoor unit of this application embodiment uses at least two telescopic mechanisms spaced apart in the height direction between the front panel 3 and the casing 1. The extension and retraction of the at least two telescopic mechanisms are controlled to open the first air inlet 31 or the second air inlet 32. The structure is simple and the control is convenient.

[0080] In some embodiments, in order to further improve the stability of the opening and closing of the front panel 3, multiple telescopic mechanisms can be arranged at the same height. The multiple telescopic mechanisms are used to connect to different positions in the length direction of the front panel 3 so that the opening and closing of the front panel 3 is more stable.

[0081] like Figure 15 and Figure 16 As shown, in some embodiments, the telescopic mechanism 8 includes a push rod 84 and a gear 83 for driving the push rod 84 to move. The edge of the push rod 84 is provided with a rack that meshes with the gear 83. The gear 83 is configured to rotate about its own axis to drive the rack to move, thereby moving the push rod 84.

[0082] Gear 83 rotates around its own axis and then drives push rod 84 to move in the thickness direction Y of the indoor unit of the air conditioner through meshing with rack.

[0083] In some embodiments, the telescopic mechanism 8 further includes a stepper motor 81, which drives the gear 83 to rotate. The extension length of the push rod 84 can be precisely controlled by controlling the number of steps of the stepper motor 81.

[0084] Of course, in some other embodiments, multiple telescopic mechanisms can also be provided between the front panel 3 and the housing 1, and the telescopic actions of the multiple telescopic mechanisms can be controlled according to the working mode of the indoor unit of the air conditioner.

[0085] Specifically, the first end of the telescopic mechanism is rotatably connected to the housing 1, and the second end of the telescopic mechanism is rotatably connected to the front panel 3.

[0086] In some embodiments, the telescopic mechanism includes a push rod. The push rod may be an electrically operated push rod.

[0087] In the cooling and heating modes, the wall-mounted air conditioner indoor unit of this application forms an air inlet by controlling the movement of the front panel 3 relative to the casing 1. When the unit is off, both the top and bottom ends of the front panel 3 need to be pressed against the casing 1. To ensure the airtightness of the indoor unit when off to prevent dust and impurities from entering the casing, and to ensure the first air inlet 31 is closed during heating mode to prevent airflow from entering the air intake duct and causing airflow collision and turbulence, in some embodiments, the bottom end of the front panel 3 is opened between it and the casing 1 to form the first air inlet 31. (See reference...) Figure 3 The wall-mounted air conditioner indoor unit also includes a first lower air outlet wall 17 and a second lower air outlet wall 18 disposed within the casing 1. The first lower air outlet wall 17 and the second lower air outlet wall 18 are located on the front and rear sides of the lower air outlet 131, respectively, to form a lower air outlet duct. In heating mode, the bottom end of the front panel 3 abuts against the bottom end of the first lower air outlet wall 17 to seal and close the first air inlet 31.

[0088] refer to Figure 1 and Figure 3 The lower end of the casing 1 has a first lower air outlet wall 17 and a second lower air outlet wall 18 respectively provided on the front and rear sides. The first lower air outlet wall 17 and the second lower air outlet wall 18 are fixedly installed inside the casing 1, and the gap between the first lower air outlet wall 17 and the second lower air outlet wall 18 forms a lower air outlet duct. In heating mode, the top of the front panel 3 moves outward so that a second air inlet 32 ​​is formed between the top of the front panel 3 and the casing 1. During the outward movement of the top of the front panel 3, the bottom of the front panel 3 will rotate relative to the casing 1. At this time, the bottom of the front panel 3 must also remain in contact with the bottom of the first lower air outlet wall 17 during the rotation. This can prevent air from entering the air inlet duct from the bottom, which helps to keep the airflow direction in the air inlet duct consistent, thereby improving the heating performance.

[0089] In some embodiments, a second air inlet 32 ​​is formed by opening between the top of the front panel 3 and the top plate 12 of the housing 1. The top plate 12 includes a top plate body and a bent section 122 disposed at the front end of the top plate body and bent relative to the top plate body. The bent section 122 is inclined downward relative to the top plate body. In the cooling mode, the top of the front panel 3 abuts against the bent end face 1221 between the bent section 122 and the top plate body to seal and close the second air inlet 32.

[0090] refer to Figure 3 The top plate 12 of the housing 1 includes a generally planar top plate body and a bent section 122 disposed at the front end of the top plate body. The bent section 122 is not coplanar with the top plate body, and the bent section 122 is inclined downward relative to the top plate body. Specifically, the first end of the bent section 122 is connected to the top plate body, and the second end of the bent section 122 forms a free end, and the second end is located below the first end. Figure 2 As shown, in cooling mode, air is drawn in through the first air inlet 31 at the bottom, while the second air inlet 32 ​​at the top remains closed. Figure 2 As shown, the top of the front panel 3 abuts against the bent end face 1221 between the bent section 122 and the main body of the top plate, thereby keeping the second air inlet sealed and closed, preventing air from entering the air inlet duct from the second air inlet and affecting the normal operation of the refrigeration.

[0091] like Figure 1 As shown, when the indoor unit of the wall-mounted air conditioner in this embodiment is off, the top of the front panel 3 abuts against the bent end face 1221, and the inner wall surface of the front panel 3 overlaps the outer wall surface of the bent section 122. That is, the top part of the front panel 3 is in close contact with the bent section 122. The shape of the bent section 122 is adapted to the shape of the top part of the front panel 3.

[0092] When switching from the power-off state to the cooling mode, refer to Figure 1 and Figure 2 The bottom of the front panel 3 moves away from the housing 1 to open the first air inlet 31. At this time, the top of the front panel 3 rotates relative to the housing 1, as... Figure 2 As shown, in cooling mode, there is a gap between the inner wall of the front panel 3 and the bending section 122.

[0093] refer to Figure 2 In some embodiments, the wall-mounted air conditioner indoor unit further includes a first air guide plate 6 disposed at the upper air outlet 121. The first air guide plate 6 is rotatably disposed to open or close the upper air outlet 121. And when the upper air outlet 121 is open, the first air guide plate 6 is located in the air outlet channel of the upper air outlet 121.

[0094] The first air guide plate 6 being located within the air outlet channel of the upper air outlet 121 means that when the first air guide plate 6 rotates relative to the housing 1, its pivot point is not located at the end of the upper air outlet 121, but rather in the middle portion of the upper air outlet 121. When the upper air outlet 121 is opened, as... Figure 2 As shown, the first air guide plate 6 is disposed inside the upper air outlet 121 and is approximately located in the middle of the upper air outlet 121. This ensures that the airflow blowing out of the upper air outlet 121 is guided by the first air guide plate 6, resulting in better airflow guidance. Furthermore, a portion of the first air guide plate 6 extends into the housing 1. This allows the first air guide plate 6 to extend outwards from the housing 1 in cooling mode, which is more aesthetically pleasing. Moreover, when switching between the closed and open positions of the upper air outlet, the rotational stroke of the first air guide plate 6 is smaller compared to when the first air guide plate 6 is connected to the end of the upper air outlet, thus reducing driving power and improving energy efficiency.

[0095] refer to Figure 3 The wall-mounted air conditioner indoor unit also includes a second air guide plate 7 disposed at the lower air outlet 131. The second air guide plate 7 is rotatably configured to open or close the lower air outlet 131, and when the lower air outlet 131 is open, the second air guide plate 7 is located within the air outlet channel of the lower air outlet 131. The second air guide plate 7 being located within the air outlet channel of the lower air outlet 131 means that when the second air guide plate 7 rotates relative to the casing 1, the pivot of the second air guide plate 7 is not located at the end of the lower air outlet 131, but rather in the middle portion of the lower air outlet 131. When the lower air outlet 131 is opened, as... Figure 3 As shown, the second air guide plate 7 is disposed inside the lower air outlet 131 and is approximately located in the middle of the lower air outlet 131. This ensures that the airflow blowing out of the lower air outlet 131 is guided by the second air guide plate 7, resulting in better airflow guidance. Furthermore, a portion of the second air guide plate 7 extends into the housing 1. This allows the second air guide plate 7 to extend outwards from the housing 1 in heating mode, which is more aesthetically pleasing. Moreover, when switching between the closed and open positions of the lower air outlet, the rotational stroke of the second air guide plate 7 is smaller compared to when the second air guide plate 7 is connected to the end of the lower air outlet, thus reducing driving power and improving energy efficiency.

[0096] like Figure 2 As shown, in cooling mode, the air outlet 121 of this embodiment is directed to the rear at an angle, so that the cold air blown out is directed toward the wall on the rear side, further improving the discomfort caused by the cold air blowing directly on the human body.

[0097] like Figure 3As shown, in heating mode, the air outlet 131 of this embodiment blows air diagonally forward, so that the hot air blown out blows directly into the activity area of ​​people, further accelerating the speed at which the hot air warms the room.

[0098] In some embodiments, reference Figure 3 The second air guide plate 7 has a sharp corner at one end near the front panel 3. In other words, the outer wall surface of the second air guide plate 7 at one end near the front panel 3 is formed as an arc, so that the outer wall surfaces of the front panel 3 and the second air guide plate 7 make smooth contact when the power is off. Moreover, the lower air outlet 131 is located at the very front of the base plate 13, so that the hot air blown out is closer to the front and heats up faster.

[0099] In some embodiments, reference Figures 1 to 3 The wall-mounted air conditioner indoor unit also includes a duct assembly 2 disposed within the casing 1. The duct assembly 2 includes a duct structure 21 and a cross-flow fan blade 22 disposed within the duct structure 21. The duct structure 21 includes a duct wall 211 and a volute 212. The duct structure 21 is configured to rotate to switch between a first rotation position and a second rotation position. In cooling mode, the duct structure 21 rotates to the first rotation position so that airflow entering the casing 1 from the first air inlet 31 flows through the duct structure to the upper air outlet 121; in heating mode, the duct structure 21 rotates to the second rotation position so that airflow entering the casing 1 from the second air inlet 32 ​​flows through the duct structure to the lower air outlet 131.

[0100] refer to Figure 2 and Figure 3 The air duct structure 21 includes an air duct wall 211 and a volute tongue 212, which are relatively fixed and rotate together. In the radial direction, one end between the air duct wall 211 and the volute tongue 212 forms an air inlet duct, and the other end forms an air outlet duct. In this embodiment, the positions of the air inlet and outlet of the air conditioner indoor unit are different in cooling and heating modes. Therefore, to adapt to these changes in the air inlet and outlet, the air duct structure 21 is configured to be rotatably arranged. This allows the position of the air inlet duct of the air duct structure 21 to match the air inlet, and the position of the air outlet duct to match the air outlet, thereby making the airflow smoother, reducing wind resistance, and optimizing performance.

[0101] refer to Figures 4 to 6In some embodiments, the air duct structure 21 further includes a turntable 213. The air duct wall 211 and the volute tongue 212 are disposed on the turntable 213. The turntable 213 is rotatably configured to drive the air duct wall 211 and the volute tongue 212 to rotate together. By setting the turntable 213 to drive the air duct wall 211 and the volute tongue 212 to rotate together, the various structures of the air duct structure 21 are integrated, resulting in a more compact structure. Furthermore, it ensures that the air duct wall 211 and the volute tongue 212 are relatively fixed, thereby guaranteeing the accurate positioning of both.

[0102] Specifically, the turntable 213, the air duct wall 211, and the volute tongue 212 are integrated into one unit. This design avoids the problems of assembly gaps and inconsistent positions of the volute tongue and air duct wall caused by assembly methods.

[0103] In some embodiments, reference Figure 7 and Figure 8 The turntable 213 includes an annular gear ring 2131. The air duct assembly 2 also includes an internal gear 216 meshing with the annular gear ring 2131 and a drive mechanism (specifically, a stepper motor 217). The internal gear 216 is meshed inside the annular gear ring 2131 and is configured to rotate under the drive of the drive mechanism to drive the turntable 213 to rotate.

[0104] This allows the drive components of the turntable 213 to be integrated at one end of the turntable 213. Furthermore, by setting an annular gear ring 2131 on the inner side of the turntable 213 and an internal gear 216 on the inner side of the annular gear ring 2131, the internal space of the turntable 213 is used to arrange the drive components, making the structure of the air duct structure 21 more compact.

[0105] refer to Figure 7 and Figure 8 In some embodiments, the turntable 213 further includes an annular guide groove 2133 located radially inside the annular gear ring 2131, and the internal gear 216 is disposed within the annular guide groove 2133. The annular guide groove 2133 limits and positions the internal gear 216, avoiding transmission problems caused by misalignment between the internal gear 216 and the annular gear ring 2131.

[0106] In some embodiments, the air duct assembly 2 further includes a fixed disk. A turntable 213 is rotatably mounted on the fixed disk. The turntable 213 also includes two bearing pad limiting grooves 2132 spaced apart at its radially outer edge and located on both sides of the thickness of the turntable 213, with bearing pads disposed within the bearing pad limiting grooves 2132. This arrangement reduces friction between the turntable 213 and the fixed disk during rotation, facilitating smooth rotation.

[0107] refer to Figure 7In some embodiments, the wall-mounted air conditioner indoor unit further includes a first lower air outlet wall 17, a second lower air outlet wall 18, and an air duct baffle 5 disposed within the casing 1. The first lower air outlet wall 17 and the second lower air outlet wall 18 are respectively located on the front and rear sides of the lower air outlet 131 to form a lower air outlet duct. The air duct baffle 5 is rotatable relative to the casing 1. In cooling mode, the air duct baffle 5 rotates so that the air duct baffle 5 abuts against the second lower air outlet wall 18 and covers the air outlet surface of the lower air outlet duct to block airflow. In heating mode, the air duct baffle 5 rotates so that both ends of the air duct baffle 5 abut against the volute tongue 212 and the first lower air outlet wall 17 respectively to form an air duct surface.

[0108] In cooling mode, air is discharged from the top air outlet, such as... Figure 2 As shown, the airflow enters the casing 1 from the first air inlet 31, passes through the heat exchanger 4, and then enters the cross-flow fan 22 through the air inlet duct at the lower end of the air duct structure 21. It then flows out through the air outlet duct at the upper end of the air duct structure 21 to the upper air outlet duct and exits through the upper air outlet at the top. In this embodiment, by setting an air duct baffle 5, in cooling mode, the air duct baffle 5 rotates so that it abuts against the second lower air outlet wall 18. Thus, after the airflow enters the casing and undergoes heat exchange with the heat exchanger 4, it can enter the air inlet duct of the air duct structure 21 under the action of the cross-flow fan 22. The air duct baffle 5 blocks the lower air outlet duct, preventing airflow from flowing out and thus avoiding airflow loss. And as... Figure 3 As shown, in heating mode, the air duct baffle 5 rotates until both ends of the air duct baffle 5 abut against the volute tongue 212 and the first lower air outlet wall 17 respectively, thereby forming an air duct surface, ensuring the sealing and integrity of the air duct surface.

[0109] The indoor unit of the air conditioner in this embodiment of the application is equipped with a duct baffle 5 to block airflow and prevent airflow loss in the cooling mode, and to form a duct surface in the heating mode.

[0110] In some embodiments, such as Figure 3 Hehe Figure 9 As shown, the outer wall surface of the volute tongue 212 is provided with a first limiting rib 2121. The second limiting rib 51 on the outer wall surface of the air duct baffle 5, in the second rotation position, abuts against the first limiting rib 2121 to prevent the air duct baffle 5 from continuing to rotate.

[0111] In heating mode, after the air duct structure 21 has rotated to its position, the air duct baffle 5 is then controlled to rotate to... Figure 3 The overlapping positions are shown. For example... Figure 3As shown, since the air duct structure 21 rotates to its position first, that is, the volute tongue 212 reaches the set position first, and then the air duct baffle 5 is controlled to rotate, the first limiting rib 2121 provided on the volute tongue 212 forms a rotation limit on the air duct baffle 5. Specifically, the second limiting rib 51 on the air duct baffle 5 overlaps the first limiting rib 2121 to prevent the air duct baffle 5 from rotating too much.

[0112] The first limiting rib 2121 provided on the outer wall surface of the volute tongue 212 in this embodiment not only improves the strength of the volute tongue 212 to prevent deformation of the volute tongue 212, but also further serves as a limiting structure to prevent the air duct baffle 5 from rotating too much, thereby limiting the position of the air duct baffle 5.

[0113] Moreover, as Figure 2 As shown, in cooling mode, the first limiting rib 2121 also abuts against the retaining plate 9 located on the housing 1 to limit the position of the volute tongue 212. At this time, the limiting step 2122 provided at the end of the volute tongue 212 also forms a concave-convex fit with the limiting step at the end of the second upper air outlet wall 16 to ensure the air duct surface is sealed while limiting the position.

[0114] like Figure 9 and Figure 10 As shown, in some embodiments, the duct wall 211 is an arc-shaped plate. The duct wall 211 includes arc-shaped reinforcing ribs 2111 disposed on the outer wall surface and extending along the arcuate extension direction of the arcuate plate, and / or transverse reinforcing ribs 2112 disposed on the outer wall surface and extending along the width direction of the arcuate plate. The arc-shaped reinforcing ribs 2111 and the transverse reinforcing ribs 2112 respectively strengthen the duct wall 211 from different directions, preventing deformation of the duct wall 211.

[0115] The outer wall surface of the volute tongue 212 is provided with reinforcing ribs. The reinforcing ribs can be the first limiting rib 2121.

[0116] like Figure 9 As shown, the outer wall surface of the air duct wall 211 is also provided with intersecting third limiting ribs 2113. The third limiting ribs 2113 not only play a role in strengthening the strength to prevent deformation, but also... Figure 3 As shown, in heating mode, the third limiting rib 2113 abuts against the slot on the limiting plate 8 provided on the housing 1 to limit the position of the air duct wall 211.

[0117] Other embodiments of this application also provide an air conditioning system, including an outdoor air conditioning unit and the aforementioned wall-mounted indoor air conditioning unit.

[0118] The following is based on Figures 1 to 10 The structure and working process of a wall-mounted air conditioner indoor unit according to a specific embodiment of this application will be described in detail.

[0119] like Figure 1 As shown, the wall-mounted air conditioner indoor unit of this embodiment includes a casing 1, an air duct assembly 2 disposed in the casing 1, a front panel 3, a heat exchanger 4, an air duct baffle 5, a first air guide plate 6, and a second air guide plate 7.

[0120] The housing 1 includes a rear plate 11, a top plate 12, and a bottom plate 13. The length direction X, thickness direction Y, and height direction Z of the housing 1 are perpendicular to each other.

[0121] The axial direction of the air duct assembly 2 is approximately parallel to the length direction X of the housing 1.

[0122] like Figure 2 As shown, a first air inlet 31 is formed between the bottom of the front panel 3 and the base plate 13, and an upper air outlet 121 is provided on the top plate 12. Figure 2 In the cooling mode shown, airflow enters through the first air inlet 31 and exits through the upper air outlet 121, meaning air enters from the bottom and exits from the top. Figure 3 As shown, a second air inlet 32 ​​is formed between the top of the front panel 11 and the top plate 12, and a lower air outlet 131 is provided on the bottom plate 13. Figure 3 In the heating mode shown, airflow enters from the second air inlet 32 ​​and exits from the lower air outlet 131, meaning air enters from the top and exits from the bottom. The front panel 3 is movably configured to open one of the first air inlet 31 and the second air inlet 32 ​​and close the other.

[0123] like Figures 4 to 5 As shown, the air duct assembly 2 includes an air duct structure 21 and a cross-flow fan blade 22. The air duct structure 21 includes an air duct wall 211, a volute tongue 212, a turntable 213, a fan bearing 214, a bearing pad 215, an internal gear 216, a stepper motor 217, a left fixed plate 218, and a right fixed plate 219. The left fixed plate 218 includes an upper left fixed plate 2181 and a lower left fixed plate 2182 that are assembled together. The right fixed plate 219 includes an upper right fixed plate 2191 and a lower right fixed plate 2192.

[0124] The drive motor 23 is used to drive the cross-flow fan blade 22 to rotate. The axis of rotation of the cross-flow fan blade 22 is parallel to the length direction X. The drive motor 23 is fitted with a motor housing 24, wherein the lower motor housing 242 is integrally formed on the lower right fixed plate 2191, and the lower motor housing 242 is detachably connected to the upper motor housing 241.

[0125] Among them, such as Figure 6As shown, the axial ends of the duct wall 211 and the volute tongue 212 are respectively connected to two turntables 213. Specifically, the duct wall 211, the volute tongue 212 and the two turntables 213 are integrally formed, for example, by injection molding. This can ensure the integrity and strength of the duct surface and avoid the assembly gaps and inconsistencies in the position of the volute tongue and the duct wall caused by the assembly method. Therefore, the integrated design of the duct effectively solves the problems of deformation or inaccurate overlap during the rotation of the duct structure, ensures the consistency of the duct, facilitates manufacturing, and improves assembly efficiency.

[0126] The air duct structure 21 has a first rotational position and a second rotational position during rotation. The air duct structure is located in the middle of the unit, and the air duct surface includes a volute tongue and an air duct wall, which are connected and fixed by turntables at both ends. This allows the volute tongue and the air duct wall to rotate together to the corresponding working position, and their relative positions remain unchanged.

[0127] like Figure 9 and Figure 10 As shown, a first limiting rib 2121 is provided on the back of the volute tongue 212. The first limiting rib 2121 can strengthen the volute tongue, and more importantly, it mainly serves a limiting function. Figure 2 As shown, when the rotating duct reaches the fixed working position, it engages with the limiting structure on the unit to restrict over-rotation and ensure the accuracy of the rotation position. A limiting step 2122 is also provided on one side of the volute tongue 2121 to ensure the sealing of the duct surface after engagement with the bottom shell.

[0128] In addition, since the curved surface of the air duct wall 211 is relatively long, reinforcing horizontal ribs and reinforcing ring ribs are added on the back side, and a third limiting rib 2113 is designed near the air outlet side, which has the same function as the first limiting rib 2121, and is used to limit the position of the air duct wall 211.

[0129] like Figure 9 and Figure 10 As shown, the two turntables 213 are respectively provided with bearing sleeve through holes 2134 and motor shaft through holes 2135, which are used to accommodate the installation of bearing sleeves and motors.

[0130] like Figure 7 and Figure 8 As shown, the turntables 213 at both ends are symmetrically designed. Each turntable 213 is equipped with an annular gear ring 2131, which primarily meshes with the internal gear for transmission. The annular guide groove 2133 on the turntable 213, also circumferential, is used to limit the placement of the internal gear, preventing transmission problems caused by misalignment between the internal gear and the annular gear ring 2131. Importantly, pairs of bearing pad limiting grooves 2132 are evenly distributed along the edge of the turntable 213, reducing friction between the turntable and the fixed disc during rotation and ensuring smooth and stable rotation.

[0131] like Figures 11 to 16As shown, another embodiment of the wall-mounted air conditioner indoor unit includes two sets of telescopic mechanisms 8 arranged in the height direction. Each set of telescopic mechanisms 8 includes two telescopic mechanisms, that is, a total of four telescopic mechanisms.

[0132] like Figure 11 and Figure 12 As shown, when the unit is in cooling mode, the two telescopic mechanisms at the bottom of the unit operate, extending their push rods to their maximum distance, causing the front panel 3 to rotate and opening the first air inlet 31. Figure 12 As shown; simultaneously, the air duct structure 21 and the air duct baffle 5 rotate to Figure 12 At the indicated location, the first air guide plate 6 is open; at this time, indoor air is drawn into the heat exchanger 4 through the first air inlet 31 for heat exchange, and then blown into the room through the upper air outlet. In this state, the cool air in the room flows from top to bottom, without blowing directly on people, which can effectively improve human comfort. At the same time, because the air supply height is relatively high, the air supply range is also wider, resulting in better cooling effect.

[0133] like Figure 13 and Figure 14 As shown, when the unit is in heating mode, the two telescopic mechanisms on the upper part of the unit operate, and their push rods extend to the maximum distance, opening the second air inlet 32. Figure 14 As shown; simultaneously, the air duct structure 21 and the air duct baffle 5 rotate to Figure 14 At the indicated location, the second air guide plate 7 is open; at this time, indoor air is drawn into the heat exchanger 4 through the second air inlet 32 ​​for heat exchange, and then blown into the room through the lower air outlet. In this state, the hot airflow is blown diagonally downward along the air duct and flows down the wall, resulting in a longer vertical air delivery distance. This avoids the situation where the top temperature is high and the bottom temperature is low, thus improving the heating effect.

[0134] like Figure 15 and Figure 16 As shown, each telescopic mechanism 8 includes a stepper motor 81, a drive housing cover 82, a gear 83, a push rod 84, a bearing pad 85, and a mounting base 86. The push rod 84 has a rack on its upper part, and the gear 83 meshes with the rack. Driven by the stepper motor 81, the gear 83 moves, thus controlling the left and right extension and retraction of the push rod 84. By controlling the number of steps of the stepper motor 81, the extension length of the push rod can be precisely controlled. The bearing pad 85 mainly serves to limit and support the push rod 84. Silicone grease is applied between all components for lubrication to ensure smooth extension.

[0135] The push rod 84 and gear 83 are movably mounted on the mounting base 86, and the drive box cover 82 closes on the mounting base 86 to seal it. The motor shaft of the stepper motor 81 passes through the drive box cover 82 and extends into the mounting base 86 to drive the gear 83.

[0136] and Figures 1 to 10 The embodiment shown differs from the one described above, as follows: Figure 12 and Figure 14 As shown, in some other embodiments, the air duct assembly 2 is positioned near the base plate, and the air duct baffle 5 is positioned above the air duct assembly 2.

[0137] The upper air outlet duct includes a first upper air outlet wall and a second upper air outlet wall located on the front and rear sides, respectively. When the rotating air duct structure is in the first position, air is discharged from the upper air outlet duct, and the air duct baffle rotates so that both ends of the air duct baffle abut against the volute tongue and the first upper air outlet wall, respectively, to form an air duct surface; when the rotating air duct structure is in the second position, air is discharged from the lower air outlet duct, and the air duct baffle rotates so that the air duct baffle abuts against the second upper air outlet wall and covers the air outlet surface of the upper air outlet duct to block the airflow.

[0138] In heating mode, air is discharged from the lower air outlet, and hot air flows within the air outlet. The air outlet baffle abuts against the second upper air outlet wall, improving the sealing performance of the airflow and thus preventing airflow from being discharged through the upper air outlet. Moreover, in heating mode, the dual blocking effect of the air outlet baffle and the first air guide plate effectively prevents condensation from occurring when the hot air inside the casing 1 exchanges heat with the cooler air outside the casing 1.

[0139] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and not to limit them; although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this application or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of this application, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in this application.

Claims

1. A wall-mounted air conditioner indoor unit, characterized by comprising: include: A housing (1) comprising a rear plate (11), a top plate (12), and a bottom plate (13), wherein the top plate (12) and the bottom plate (13) are spaced apart in the height direction (Z) and the rear plate (11) is disposed between the top plate (12) and the bottom plate (13), the housing (1) having an open end opposite to the rear plate (11), an upper air outlet (121) on the top plate (12), and a lower air outlet (131) on the bottom plate (13); and Front panel (3), the front panel (3) is disposed at the open end and is movably disposed relative to the housing (1) such that the bottom end of the front panel (3) opens between the housing (1) to form a first air inlet (31) or the top end of the front panel (3) opens between the housing (1) to form a second air inlet (32). The wall-mounted air conditioner indoor unit has a cooling mode and a heating mode. In the cooling mode, the bottom of the front panel (3) is opened between the front panel (3) and the casing (1) to form a first air inlet (31), and the airflow enters the casing (1) from the first air inlet (31) and flows out through the upper air outlet (121). In the heating mode, the top of the front panel (3) is opened between the front panel (3) and the casing (1) to form a second air inlet, and the airflow enters the casing (1) from the second air inlet (32) and flows out through the lower air outlet (131).

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The wall-mounted air conditioner indoor unit also includes at least two telescopic mechanisms (8) spaced apart in the height direction (Z) of the casing (1). The first end of the telescopic mechanism (8) is connected to the casing (1), and the second end of the telescopic mechanism (8) is connected to the front panel (3). The first end and the second end of the telescopic mechanism (8) are telescopically connected. A portion of the telescopic mechanism (8) retracts while the other portion extends to control the bottom or top end of the front panel (3) to leave the casing (1) to open the first air inlet (31) or the second air inlet (32).

3. The wall-mounted air conditioner indoor unit according to claim 2, characterized in that, The telescopic mechanism (8) includes a push rod (84) and a gear (83) for driving the push rod (84) to move. The edge of the push rod (84) is provided with a rack that meshes with the gear (83). The gear (83) is configured to rotate about its own axis to drive the rack to move and thus drive the push rod (84) to move.

4. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The bottom of the front panel (3) is opened between the housing (1) to form a first air inlet (31). The wall-mounted air conditioner indoor unit also includes a first lower air outlet wall (17) and a second lower air outlet wall (18) disposed in the housing (1). The first lower air outlet wall (17) and the second lower air outlet wall (18) are respectively located on the front and rear sides of the lower air outlet (131) to form a lower air outlet duct. In the heating mode, the bottom of the front panel (3) abuts against the bottom of the first lower air outlet wall (17) to seal and close the first air inlet (31).

5. The wall-mounted air conditioner indoor unit according to claim 1, characterized by, The top of the front panel (3) is opened between the top of the front panel (3) and the top plate (12) of the housing (1) to form a second air inlet (32). The top plate (12) includes a top plate body and a bent section (122) disposed at the front end of the top plate body and bent relative to the top plate body. The bent section (122) is inclined downward relative to the top plate body. In the cooling mode, the top of the front panel (3) abuts against the bent end face (1221) between the bent section (122) and the top plate body to seal and close the second air inlet (32).

6. The wall-mounted air conditioner indoor unit according to claim 1, characterized by, The wall-mounted air conditioner indoor unit further includes a first air guide plate (6) disposed at the upper air outlet (121), the first air guide plate (6) being rotatably disposed to open or close the upper air outlet (121), and when the upper air outlet (121) is opened, the first air guide plate (6) is located in the air outlet channel of the upper air outlet (121); and / or, the wall-mounted air conditioner indoor unit further includes a second air guide plate (7) disposed at the lower air outlet (131), the second air guide plate (7) being rotatably disposed to open or close the lower air outlet (131), and when the lower air outlet (131) is opened, the second air guide plate (7) is located in the air outlet channel of the lower air outlet (131).

7. The wall-mounted air conditioner indoor unit according to any one of claims 1 to 6, characterized by, The wall-mounted air conditioner indoor unit also includes a duct assembly (2) disposed within the casing (1). The duct assembly (2) includes a duct structure (21) and a cross-flow fan blade (22) disposed within the duct structure (21). The duct structure (21) includes a duct wall (211) and a volute (212). The duct structure (21) is configured to be rotatable to switch between a first rotation position and a second rotation position. In the cooling mode, the duct structure (21) rotates to the first rotation position so that airflow entering the casing (1) from the first air inlet (31) flows through the duct structure to the upper air outlet (121). In the heating mode, the duct structure (21) rotates to the second rotation position so that airflow entering the casing (1) from the second air inlet (32) flows through the duct structure to the lower air outlet (131).

8. The wall-mounted air conditioner indoor unit according to claim 7, characterized in that, The air duct structure (21) also includes a turntable (213), the air duct wall (211) and the volute tongue (212) are disposed on the turntable (213), and the turntable (213) is rotatably disposed to drive the air duct wall (211) and the volute tongue (212) to rotate together.

9. The wall-mounted air conditioner indoor unit according to claim 8, characterized in that, The turntable (213) includes an annular gear ring (2131), and the air duct assembly (2) further includes an internal gear (216) meshing with the annular gear ring (2131) and a drive mechanism. The internal gear (216) is meshed inside the annular gear ring (2131) and is configured to rotate under the drive of the drive mechanism to drive the turntable (213) to rotate.

10. The wall-mounted air conditioner indoor unit according to claim 9, characterized in that, The turntable (213) also includes an annular guide groove (2133) located radially inside the annular gear ring (2131), and the internal gear (216) is disposed in the annular guide groove (2133).

11. The wall-mounted air conditioner indoor unit according to claim 8, characterized in that, The air duct assembly (2) also includes a fixed disk, and the turntable (213) is rotatably mounted on the fixed disk. The turntable (213) also includes two bearing gasket limiting grooves (2132) spaced apart on the radial outer edge and located on both sides of the thickness of the turntable (213). The bearing gasket limiting grooves (2132) are used to set bearing gaskets.

12. The wall-mounted air conditioner indoor unit according to claim 7, wherein The wall-mounted air conditioner indoor unit also includes a first lower air outlet wall (17), a second lower air outlet wall (18), and an air duct baffle (5) disposed in the casing (1). The first lower air outlet wall (17) and the second lower air outlet wall (18) are respectively located on the front and rear sides of the lower air outlet (131) to form a lower air outlet duct. The air duct baffle (5) is rotatable relative to the casing (1). In the cooling mode, the air duct baffle (5) rotates so that the air duct baffle (5) abuts against the second lower air outlet wall (18) and covers the air outlet surface of the lower air outlet duct to block the airflow. In the heating mode, the air duct baffle (5) rotates so that both ends of the air duct baffle (5) abut against the volute tongue (212) and the first lower air outlet wall (17) respectively to form an air duct surface.

13. The wall-mounted air conditioner indoor unit according to claim 12, characterized in that, The outer wall of the volute tongue (212) is provided with a first limiting rib (2121), and the outer wall of the air duct baffle (5) is provided with a second limiting rib (51). In the second rotation position, the second limiting rib (51) abuts against the first limiting rib (2121) to prevent the air duct baffle (5) from continuing to rotate.

14. The wall-mounted air conditioner indoor unit according to claim 7, wherein The air duct wall (211) is an arc-shaped plate, and the air duct wall (211) includes an arc-shaped reinforcing rib (2111) disposed on the outer wall surface and extending along the arc-shaped extension direction of the arc-shaped plate and / or a transverse reinforcing rib (2112) disposed on the outer wall surface and extending along the width direction of the arc-shaped plate; and / or, the outer wall surface of the volute tongue (212) is provided with reinforcing ribs.

15. An air conditioning system comprising: This includes an outdoor air conditioning unit and a wall-mounted indoor air conditioning unit as described in any one of claims 1 to 14.

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