Wall-mounted air conditioner indoor unit and air conditioning system

Abstract

Embodiments of the present application provide a wall-mounted air conditioner indoor unit and an air conditioning system. The wall-mounted air conditioner indoor unit comprises a casing and a front panel. The casing comprises a back plate, a top plate and a bottom plate. The top plate and the bottom plate are arranged at intervals in the height direction, and the back plate is arranged between the top plate and the bottom plate. The casing has an open end opposite to the back plate. The top plate is provided with an upper air outlet, and the bottom plate is provided with a lower air outlet. The front panel is arranged at the open end, and at least part of the front panel is configured to be movable relative to the casing in the height direction to form an air inlet. The wall-mounted air conditioner indoor unit of the embodiments of the present application sets the upper air outlet on the top plate and the lower air outlet on the bottom plate. In the cooling mode, air is discharged from the upper air outlet to avoid the problem of cold air directly blowing on the human body causing discomfort. In the heating mode, air is discharged from the lower air outlet, so that hot air can directly reach the ground through the lower air outlet, achieving the purpose of quickly warming the room.

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 at least a portion of the front panel is configured to be movable relative to the housing in the height direction to form an air inlet.

[0008] The indoor unit of the air conditioner has a cooling mode and a heating mode. In the cooling mode, the front panel moves upward to form a first air inlet in the lower part of the open end. The airflow enters the casing from the first air inlet and flows out through the upper air outlet. In the heating mode, the front panel moves downward to form a second air inlet in the upper part of the open end. The airflow enters the casing from the second air inlet and flows out through the lower air outlet.

[0009] In some embodiments, the front panel includes a first plate and a second plate arranged sequentially along the height direction. The first plate covers the upper middle region of the open end, and the second plate covers the lower middle region of the open end. The first plate and the second plate are movable relative to each other in the height direction. In cooling mode, the second plate moves upward relative to the first plate to open the lower middle region of the open end to form a first air inlet. In heating mode, the first plate moves downward relative to the second plate to open the upper middle region of the open end to form a second air inlet.

[0010] In some embodiments, the first plate and the second plate are equal in size in the height direction. In cooling mode, the second plate moves upward to be entirely located behind the first plate so that half of the open end is open. In heating mode, the first plate moves downward to be entirely located in front of the second plate so that half of the open end is open.

[0011] 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 disposed to open or close the upper air outlet, and when the upper air outlet is opened, the first air guide plate is located in 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, one end of the second air guide plate being rotatably connected to the bottom end of the rear plate to open or close the lower air outlet.

[0012] 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.

[0013] In some embodiments, the air duct structure further includes a turntable, with the air duct wall and volute disposed on the turntable, and the turntable being rotatably disposed to drive the air duct wall and volute to rotate together.

[0014] In some embodiments, the indoor unit of the wall-mounted air conditioner further includes a first upper air outlet wall, a second upper air outlet wall, and an air duct baffle disposed within the casing. The first upper air outlet wall and the second upper air outlet wall are respectively located on the front and rear sides of the upper air outlet to form an upper air outlet duct. The air duct baffle is rotatable relative to the casing. In heating mode, 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 airflow. In cooling mode, 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.

[0015] In some embodiments, the indoor unit of the wall-mounted air conditioner further includes a first lower air outlet wall and a second lower air outlet wall 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. In heating mode, the duct wall abuts against the first lower air outlet wall, and the volute abuts against the second lower air outlet wall. The distance between the end of the first lower air outlet wall and the base plate in the height direction is h1, and the height of the rear plate is H, where h1 = t * H, and t = 0.1~0.3.

[0016] In some embodiments, a heat exchanger disposed within the casing is further included. The heat exchanger is located at the front side of the air duct structure. The distance in the height direction between the lower end of the heat exchanger and the base plate is h2, and the distance in the height direction between the end of the first lower air outlet wall and the base plate is h1, where h1 = k * h2, and k = 0.8~2. A second aspect of this application provides an air conditioning system, including an outdoor air conditioning unit and the aforementioned wall-mounted indoor air conditioning unit.

[0017] 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 the bottom panel are spaced apart in the height direction, and the rear panel is disposed between the top panel and the bottom panel. 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 disposed at the open end, and at least a portion of the front panel is configured to be movable relative to the casing in the height direction to form an air inlet. The wall-mounted air conditioner indoor unit of this application provides an upper air outlet on the top panel and a lower air outlet on the bottom panel. 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, achieving the purpose of quickly warming the room. Furthermore, in this embodiment of the air conditioner, the air inlet of the indoor unit is formed by the opening of the front panel relative to the casing. Thus, when the indoor unit is off, both the top and bottom ends of the front panel abut against the front end of the casing. Compared to related technologies that require a certain distance for the air inlet and a dedicated baffle to close it, this simplifies the structure of the indoor unit. Moreover, since the air inlet is formed by the movement of the front panel relative to the casing, there is no dedicated air inlet occupying thickness in the off state, resulting in a thinner indoor unit when off.

[0018] 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

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] 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.

[0021] 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.

[0022] Figure 3This 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.

[0023] Figure label:

[0024] 1. Housing; 11. Rear panel; 12. Top panel; 121. Upper air outlet; 13. Bottom panel; 131. Lower air outlet; 15. First lower air outlet wall; 16. Second lower air outlet wall; 17. First upper air outlet wall; 18. Second upper air outlet wall;

[0025] 2. Air duct components;

[0026] 21. Air duct structure;

[0027] 211. Air duct wall;

[0028] 212. Cochlear tongue;

[0029] 213. Turntable;

[0030] 22. Crossflow fan blades;

[0031] 4a. First air inlet;

[0032] 4b. Second air inlet;

[0033] 5. Air duct baffle;

[0034] 6. First air guide plate;

[0035] 7. Second air guide plate;

[0036] 8. Heat exchanger;

[0037] Y represents the width direction; Z represents the height direction. Detailed Implementation

[0038] 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 be a description of this application or its application or use.

[0039] Limitations. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] The following is for reference. Figures 1 to 3 The structure and operation of the wall-mounted air conditioner indoor unit of some embodiments of this application will be described in detail.

[0046] refer to Figures 1 to 3 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 at least a portion of the front panel 3 is configured to be movable relative to the housing 1 in the height direction Z to form an air inlet.

[0047] The wall-mounted air conditioner indoor unit has a cooling mode and a heating mode. In cooling mode, the front panel 3 moves upward to form a first air inlet 4a in the lower part of the open end, and airflow enters the casing 1 from the first air inlet 4a and flows out through the upper air outlet 121. In heating mode, the front panel 3 moves downward to form a second air inlet 4b in the upper part of the open end, and airflow enters the casing 1 from the second air inlet 4b and flows out through the lower air outlet 131.

[0048] 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, both the top and bottom ends of the front panel 3 abut against the front end of the casing 1. Compared to related technologies that require a certain distance for the air inlet and a specially designed 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.

[0049] In some embodiments, the front panel 3 includes a first plate 31 and a second plate 32 arranged sequentially along the height direction Z. The first plate 31 covers the upper-middle region of the open end, and the second plate 32 covers the lower-middle region of the open end. The first plate 31 and the second plate 32 are movable relative to each other in the height direction Z. In cooling mode, the second plate 32 moves upward relative to the first plate 31 to open the lower-middle region of the open end to form a first air inlet 4a; in heating mode, the first plate 31 moves downward relative to the second plate 32 to open the upper-middle region of the open end to form a second air inlet 4b.

[0050] Specifically, in cooling mode, the first air inlet 4a is located on the lower part of the casing 1, while the upper air outlet 121 is located on the top of the casing 1. This allows indoor airflow to enter the casing 1 through the first air inlet 4a, flow upwards within the casing 1, and exit through the upper air outlet 121. This increases the airflow travel distance within the casing 1, extending the heat exchange time and allowing for better heat exchange with the heat exchanger 8 located within the casing 1, thus improving the cooling effect. Similarly, in heating mode, the second air inlet 4b is located on the upper part of the casing 1, while the lower air outlet 131 is located on the bottom of the casing 1. This allows indoor airflow to enter the casing 1 through the second air inlet 4b, flow downwards within the casing 1, and exit through the lower air outlet 131. This also increases the airflow travel distance within the casing 1, extending the heat exchange time and allowing for better heat exchange with the heat exchanger 8 located within the casing 1, thus improving the heating effect.

[0051] Furthermore, in both cooling and heating modes, the distance between the air inlet and outlet of the wall-mounted air conditioner indoor unit in this application embodiment is relatively far, which can avoid mutual interference between the air inlet and outlet and reduce the occurrence of short circuits in the return air to a certain extent.

[0052] Furthermore, in the thickness direction of the casing 1, or in the width direction Y of the casing 1, the air inlets (first air inlet 4a and second air inlet 4b), the heat exchanger 8, and the air outlets (upper air outlet 121 and lower air outlet 131) are arranged in sequence, so that the airflow entering from the air inlet enters the casing 1 and first exchanges heat fully with the heat exchanger 8 before flowing to the air outlet. This can improve the heat exchange efficiency and heat exchange effect.

[0053] In some embodiments, both the first plate 31 and the second plate 32 are constructed as flat plates. In the off state, the upper end of the first plate 31 is connected to the front edge of the top plate 12, and the lower end of the second plate 32 is connected to the front edge of the bottom plate 11. The lower end of the first plate 31 overlaps the front side of the second plate 32. In other words, the first plate 31 and the second plate 32 partially overlap, which can increase the sealing performance in the off state and reduce the entry of dust and impurities into the housing 1 when the machine is off.

[0054] Furthermore, the inner side of the first plate 31 may be provided with a rack extending along the height direction Z, and the outer side of the second plate 32 may be provided with a gear, which meshes with the rack so that the second plate 32 is movable relative to the first plate 31 through the engagement of the gear and the rack. Similarly, the first plate 31 can also be movable relative to the second plate 32 through the engagement of the gear and the rack.

[0055] In some embodiments, a stepper motor can be used to drive the gear to rotate, thereby enabling the first plate 31 or the second plate 32 to move up and down.

[0056] refer to Figure 2 and 3 In some embodiments, the first plate 31 and the second plate 32 are equal in size in the height direction Z. In cooling mode, the second plate 32 moves upward until it is entirely behind the first plate 31, so that half of the open end is open. In heating mode, the first plate 31 moves downward until it is entirely in front of the second plate 32, so that half of the open end is open.

[0057] This allows the area of ​​the first air inlet 41a to be half the area of ​​the open end in cooling mode, ensuring a sufficient air intake and thus improving the cooling effect. Similarly, in heating mode, the area of ​​the second air inlet 41b is made to be half the area of ​​the open end, ensuring a sufficient air intake and thus improving the heating effect.

[0058] 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.

[0059] 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 2As 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.

[0060] like Figure 2 As shown, in the cooling mode, the air outlet 121 of this embodiment has an oblique forward air outlet direction, which causes the blown cold air to blow towards the upper part of the indoor space. Since the density of cold air is greater than that of hot air, the cold air is evenly distributed above the indoor space and then gradually sinks to the lower part of the indoor space, thereby achieving cooling and improving the discomfort caused by cold air blowing directly on the human body.

[0061] like Figure 3 As shown, in some embodiments, the wall-mounted air conditioner indoor unit also includes a second air guide plate 7 disposed at the lower air outlet 131. One end of the second air guide plate 7 is rotatably connected to the bottom end of the rear plate 11 to open or close the lower air outlet 131.

[0062] like Figure 1 and Figure 2 As shown, in the off state or cooling mode, the second air guide plate 7 rotates to be parallel to the base plate 13 to close the lower air outlet 131. At this time, the second air guide plate 7 is connected between the bottom end of the rear plate 11 and the base plate 13. Figure 3 As shown, in heating mode, the second air guide plate 7 rotates outward to open the lower air outlet 131, and the second air guide plate 131 is tilted at an angle to the rear plate 11, so that the airflow is tilted and guided to the front of the housing 1 based on the downward hot air outlet. This makes the hot air blown directly towards the activity area of ​​the person, further accelerating the warming of the room and increasing the user's comfort.

[0063] In some embodiments, reference Figures 1 to 3The 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 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. The duct structure 21 is concentric with the cross-flow fan 22. 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.

[0064] 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.

[0065] refer to Figures 1 to 3 In 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 disposed to drive the air duct wall 211 and the volute tongue 212 to rotate together.

[0066] 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 and the structure is more compact. It can also ensure that the air duct wall 211 and the volute tongue 212 are relatively fixed, thereby ensuring the accuracy of their positions.

[0067] 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.

[0068] In some embodiments, the wall-mounted air conditioner indoor unit further includes a first upper air outlet wall 17, a second upper air outlet wall 18, and an air duct baffle 5 disposed within the casing 1. The first upper air outlet wall 17 and the second upper air outlet wall 18 are respectively located on the front and rear sides of the upper air outlet 121 to form an upper air outlet duct. The air duct baffle 5 is rotatable relative to the casing 1. In heating mode, the air duct baffle 5 rotates so that the air duct baffle 5 abuts against the second upper air outlet wall 18 and covers the air outlet surface of the upper air outlet duct to block airflow. In cooling 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 upper air outlet wall 17 respectively to form an air duct surface.

[0069] In heating mode, air is discharged from the lower air outlet 131, such as... Figure 3 As shown, the airflow enters the casing 1 through the first air inlet 4a, passes through the heat exchanger 8, 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 121 at the top. In this embodiment, by setting an air duct baffle 5, in heating mode, the air duct baffle 5 rotates to abut against the second upper air outlet wall 18. Thus, after the airflow enters the casing 1 and undergoes heat exchange with the heat exchanger 8, 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 upper air outlet duct, preventing airflow from flowing out and thus avoiding airflow loss.

[0070] And such Figure 2 As shown, in cooling 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 upper air outlet wall 17 respectively, so that the volute tongue 212, the air duct baffle 5 and the first upper air outlet wall 17 together form the air duct surface of the upper air outlet, ensuring the sealing and integrity of the air duct surface, and at the same time guiding the airflow.

[0071] 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 heating mode, and to form a duct surface in cooling mode.

[0072] In some embodiments, the second upper air outlet wall 18 is configured to have an arc-shaped profile, and the cross-flow fan blade 22 is located on the concave side of the second upper air outlet wall 18. This allows for better guidance of airflow along the upper air outlet duct in cooling mode, and cooperates with the first air guide plate 6 to achieve oblique front air outlet.

[0073] In some embodiments, the indoor unit of the wall-mounted air conditioner further includes a first lower air outlet wall 15 and a second lower air outlet wall 16 disposed within the casing 1. The first lower air outlet wall 15 and the second lower air outlet wall 16 are respectively located on the front and rear sides of the lower air outlet 131 to form a lower air outlet duct. In heating mode, the duct wall 211 abuts against the first lower air outlet wall 15, and the volute tongue 212 abuts against the second lower air outlet wall 16. The distance between the end of the first lower air outlet wall 15 and the base plate 13 in the height direction is h1, the height of the rear plate 11 is H, h1=t*H, and t=0.1~0.3.

[0074] By ensuring that the height (h1) of the first lower air outlet wall 15 and the overall height of the housing 1 (i.e., the height H of the rear panel 11) meet a specific dimensional relationship, the first lower air outlet wall 15 can be positioned appropriately in terms of height, preventing the airflow into the housing 1 from being blocked due to the first air outlet wall 15 being too high in the cooling mode, thus ensuring the smoothness of the cooling airflow.

[0075] In some embodiments, the heat exchanger 8 is located at the front of the air duct structure 21. The distance between the lower end of the heat exchanger 8 and the base plate 13 in the height direction Z is h2, and the distance between the end of the first lower air outlet wall 15 and the base plate 13 in the height direction Z is h1, where h1 = k * h2, and k = 0.8 ~ 2.

[0076] Of course, the height of the first air outlet wall 15 is not necessarily better the lower it is. By ensuring that the height of the first lower air outlet wall 15 and the height of the lower end of the heat exchanger 8 meet the required dimensional relationship, the height of the first air duct wall 15 is limited to a reasonable range. This can prevent the lower air outlet from being too short when the first air duct wall 15 is too low, thus affecting the guidance of hot air, and can also prevent the first air duct wall 15 from being too high, thus blocking the cold air.

[0077] In some embodiments, the first lower air outlet wall 15 includes a fixed section and a rotating section. The first end of the fixed section is fixedly connected to the base plate 13, and the rotating section is hinged to the second end of the fixed section. In cooling mode, the rotating section rotates to overlap with the second lower air outlet wall 16, thereby blocking the lower air outlet duct. This reduces the amount of airflow entering the casing 1 and flowing towards the lower air outlet 131 in cooling mode, thus concentrating the airflow towards the upper air outlet 121 and improving the air outlet effect when air is outletped upwards. In heating mode, the rotating section rotates to abut against the duct wall 211, so that the duct wall 211, the rotating section, and the fixed section work together to form the duct surface of the lower air outlet duct, improving the air outlet effect when air is outletped downwards.

[0078] 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.

[0079] The following is based on Figures 1 to 3 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.

[0080] 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 8, an air duct baffle 5, a first air guide plate 6, and a second air guide plate 7.

[0081] The housing 1 includes a rear plate 11, a top plate 12, and a bottom plate 13. The length direction, width direction Y, and height direction Z of the housing 1 are perpendicular to each other.

[0082] The axial direction of the air duct assembly 2 is approximately parallel to the length direction of the housing 1.

[0083] The front panel 3 includes a first plate 31 and a second plate 32 that are relatively movable in the height direction Z. Both the first plate 31 and the second plate 32 are constructed as flat plates. In the off state, the upper end of the first plate 31 connects to the front edge of the top plate 12, and the lower end of the second plate 32 connects to the front edge of the bottom plate 11, with the lower end of the first plate 31 resting on the front side of the second plate 32. The first plate 31 and the second plate 32 have equal dimensions in the height direction Z. In cooling mode, the second plate 32 moves upward until it is entirely located behind the first plate 31, opening half of the open end to form a first air inlet 41a. In heating mode, the first plate 31 moves downward until it is entirely located in front of the second plate 32, opening half of the open end to form a second air inlet 41b. In cooling mode, the area of ​​the first air inlet 41a reaches half the area of ​​the open end, ensuring a sufficiently large air intake and thus improving the cooling effect. Similarly, in heating mode, the area of ​​the second air inlet 41b is made to be half the area of ​​the open end, so that the air intake is large enough, thereby improving the heating effect.

[0084] 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, and a turntable 213. The axis of rotation of the cross-flow fan blade 22 is approximately in the same direction as the length of the housing 1.

[0085] The axial ends of the air duct wall 211 and the volute tongue 212 are respectively connected to two turntables 213. Specifically, the air 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 air duct surface and avoid the assembly gaps and inconsistencies in the position of the volute tongue and the air duct wall caused by the assembly method. Therefore, the integrated design of the air duct effectively solves the problems of deformation or inaccurate overlap during the rotation of the air duct structure, ensures the consistency of the air duct, facilitates manufacturing and improves assembly efficiency.

[0086] 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.

[0087] 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 in that, 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) being provided on the top plate (12), and a lower air outlet (131) being provided on the bottom plate (13); and A front panel (3) is disposed at the open end, at least a portion of which is configured to be movable relative to the housing (1) along the height direction (Z) to form an air inlet. The indoor unit of the air conditioner has a cooling mode and a heating mode. In the cooling mode, the front panel (3) moves upward to form a first air inlet (4a) in the lower region of the open end. Airflow enters the casing (1) from the first air inlet (4a) and flows out through the upper air outlet (121). In the heating mode, the front panel (3) moves downward to form a second air inlet (4b) in the upper region of the open end. Airflow enters the casing (1) from the second air inlet (4b) 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 front panel (3) includes a first plate (31) and a second plate (32) arranged sequentially along the height direction. The first plate (31) covers the upper middle region of the open end, and the second plate (32) covers the lower middle region of the open end. The first plate (31) and the second plate (32) are movable relative to each other in the height direction (Z). In the cooling mode, the second plate (32) moves upward relative to the first plate (31) to open the lower middle region of the open end to form the first air inlet (4a). In the heating mode, the first plate (31) moves downward relative to the second plate (32) to open the upper middle region of the open end to form the second air inlet (4b).

3. The wall-mounted air conditioner indoor unit according to claim 2, characterized in that, The first plate (31) and the second plate (32) are equal in size in the height direction (Z). In the cooling mode, the second plate (32) moves upward to be entirely located behind the first plate (31) so that half of the open end is opened. In the heating mode, the first plate (31) moves downward to be entirely located in front of the second plate (32) so that half of the open end is opened.

4. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, 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), one end of the second air guide plate (7) being rotatably connected to the bottom end of the rear plate (11) to open or close the lower air outlet (131).

5. The wall-mounted air conditioner indoor unit according to any one of claims 1 to 4, characterized in that, 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 (4a) flows through the duct structure (21) 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 (4b) flows through the duct structure (21) to the lower air outlet (131).

6. The wall-mounted air conditioner indoor unit according to claim 5, 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.

7. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that, The wall-mounted air conditioner indoor unit also includes a first upper air outlet wall (17), a second upper air outlet wall (18), and an air duct baffle (5) disposed in the casing (1). The first upper air outlet wall (17) and the second upper air outlet wall (18) are respectively located on the front and rear sides of the upper air outlet (121) to form an upper air outlet duct. The air duct baffle (5) is rotatable relative to the casing (1). In the heating mode, the air duct baffle (5) rotates so that the air duct baffle (5) abuts against the second upper air outlet wall (18) and covers the air outlet surface of the upper air outlet duct to block the airflow. In the cooling 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 upper air outlet wall (17) respectively to form an air duct surface.

8. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that, The wall-mounted air conditioner indoor unit also includes a first lower air outlet wall (15) and a second lower air outlet wall (16) disposed in the casing (1). The first lower air outlet wall (15) and the second lower air outlet wall (16) 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 duct wall (211) abuts against the first lower air outlet wall (15), and the volute tongue (212) abuts against the second lower air outlet wall (16). The distance between the end of the first lower air outlet wall (15) and the base plate (13) in the height direction is h1, and the height of the rear plate (11) is H, h1=t*H, t=0.1~0.

3.

9. The wall-mounted air conditioner indoor unit according to claim 8, characterized in that, It also includes a heat exchanger (8) disposed in the housing (1), the heat exchanger (8) being located on the front side of the air duct structure (21), the lower end of the heat exchanger (8) being at a distance h2 from the bottom plate (13) in the height direction (Z), the end of the first lower air outlet wall (15) being at a distance h1 from the bottom plate (13) in the height direction (Z), h1=k*h2, k=0.8~2.

10. An air conditioning system, characterized in that, It includes an outdoor air conditioning unit and a wall-mounted indoor air conditioning unit as described in any one of claims 1 to 9.

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