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, an air duct assembly and a heat exchanger. The casing comprises a top plate, a bottom plate, a front plate and a rear plate. Part of the top plate is open to form an upper air outlet. Part of the bottom plate is open to form a lower air outlet. The heat exchanger is arranged between the front plate and the air duct assembly. In the air outlet mode, the airflow enters the casing through one of the upper air outlet and the lower air outlet, flows to the gap between the heat exchanger and the front plate, then passes through the heat exchanger into the air duct assembly and flows out of the casing through the other of the upper air outlet and the lower air outlet. The wall-mounted air conditioner indoor unit has two upper and lower air outlets, and by controlling the action of the air duct assembly, air is discharged from different air outlets in heating or cooling mode, improving the user's experience. And the number of parts forming the air outlet is saved, reducing the production and installation cost of the wall-mounted air conditioner indoor unit.

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 the user experience.

[0005] This application provides a wall-mounted air conditioner indoor unit, including a casing, an air duct assembly, and a heat exchanger. The casing includes a top plate, a bottom plate, a front plate, and a rear plate. The top and bottom plates are spaced apart in the height direction, and the front and rear plates are spaced apart in a first direction. A portion of the top plate is open to form an upper air vent, and a portion of the bottom plate is open to form a lower air vent. The air duct assembly is disposed within the casing to change the airflow path within the casing. The heat exchanger is disposed within the casing and positioned in the first direction between the front plate and the air duct assembly. The wall-mounted air conditioner indoor unit has an air outlet mode. In the air outlet mode, airflow enters the casing through one of the upper and lower air vents and flows to the gap between the heat exchanger and the front plate, then passes through the heat exchanger into the air duct assembly and exits the casing through the other of the upper and lower air vents.

[0006] In some embodiments, the air outlet mode includes a cooling mode and a heating mode. In the cooling mode, the airflow enters the housing from the lower air outlet and exits the housing from the upper air outlet under the action of the air duct assembly. In the heating mode, the airflow enters the housing from the upper air outlet and exits the housing from the lower air outlet.

[0007] In some embodiments, the indoor unit of the wall-mounted air conditioner further includes a first lower air wall, a second lower air wall, and a lower air duct baffle disposed within the casing. The first lower air wall and the second lower air wall are respectively located on the front and rear sides of the lower air outlet to form a lower air duct. The lower air duct baffle is rotatably connected to the first lower air wall. In the cooling mode, the lower air duct baffle rotates to abut against the second lower air wall and cover the channel surface of the lower air duct to block airflow. In the heating mode, the lower air duct baffle rotates to overlap the open part of the base plate.

[0008] In some embodiments, the air duct assembly includes a rotating air duct structure and a cross-flow fan blade. The rotating air duct structure is disposed radially outside the cross-flow fan blade and partially covers the cross-flow fan blade in the circumferential direction. The rotating air duct structure is rotatable relative to the cross-flow fan blade to change the airflow direction within the air duct assembly. A second lower air wall extends from inside the housing to the opening of the bottom plate and forms one side wall of the lower air duct channel wall. A first lower air wall extends from inside the housing toward the opening of the bottom plate. A lower air duct baffle is rotatably connected to the end of the first lower air wall near the lower air outlet. In heating mode, the first lower air wall and the lower air duct baffle together form the other side wall of the lower air duct channel wall.

[0009] In some embodiments, the air duct assembly includes a rotating air duct structure and a cross-flow fan blade. The rotating air duct structure is disposed radially outside the cross-flow fan blade and partially covers the cross-flow fan blade in the circumferential direction. The rotating air duct structure is rotatable relative to the cross-flow fan blade. The rotating air duct structure includes an air duct wall and a volute tongue spaced apart in the circumferential direction. In the heating mode, the air duct wall and the volute tongue rotate such that the air duct wall abuts against a first lower air wall and the volute tongue abuts against a second lower air wall.

[0010] In some embodiments, the indoor unit of the wall-mounted air conditioner further includes a first upper air wall, a second upper air wall, and an upper air duct baffle disposed within the casing. The first upper air wall and the second upper air wall are respectively located on the front and rear sides of the upper air outlet to form an upper air duct. The upper air duct baffle is rotatably connected to the first upper air wall. In the cooling mode, the upper air duct baffle rotates to overlap the open part of the top plate. In the heating mode, the upper air duct baffle rotates to abut against the second upper air wall and cover the channel surface of the upper air duct to block the airflow.

[0011] In some embodiments, the air duct assembly includes a rotating air duct structure and a cross-flow fan blade. The rotating air duct structure is disposed radially outside the cross-flow fan blade and partially covers the cross-flow fan blade in the circumferential direction. The rotating air duct structure is rotatable relative to the cross-flow fan blade to change the airflow direction within the air duct assembly. A second upper air wall extends from inside the housing to the opening of the top plate and forms one side wall of the upper air duct channel wall. A first upper air wall extends from inside the housing toward the opening of the top plate. An upper air duct baffle is rotatably connected to the first upper air wall near the upper air outlet. In cooling mode, the first upper air wall and the upper air duct baffle together form the other side wall of the upper air duct channel wall.

[0012] In some embodiments, the air duct assembly includes a rotating air duct structure and a cross-flow fan blade. The rotating air duct structure is disposed radially outside the cross-flow fan blade and partially covers the cross-flow fan blade in the circumferential direction. The rotating air duct structure is rotatable relative to the cross-flow fan blade. The rotating air duct structure includes an air duct wall and a volute tongue spaced apart in the circumferential direction. In the cooling mode, the air duct wall and the volute tongue rotate such that the volute tongue abuts against a first upper air wall and the air duct wall abuts against a second upper air wall.

[0013] In some embodiments, the heat exchanger is spaced apart from the top plate and the bottom plate at its upper and lower ends in the height direction, respectively, and gaps are formed between the heat exchanger at its upper and lower ends in the height direction and the top plate and the bottom plate, respectively, to allow airflow to flow in the first direction.

[0014] In some embodiments, the wall-mounted air conditioner indoor unit further includes an air guide plate rotatably disposed at one of the upper air vent and the lower air vent for opening or closing one of the upper air vent and the lower air vent. The wall-mounted air conditioner indoor unit also has a shutdown mode, in which the air guide plate rotates to close one of the upper air vent and the lower air vent, and in an air outlet mode, the air guide plate rotates to open one of the upper air vent and the lower air vent.

[0015] A second aspect of this application provides an air conditioning system, including an outdoor unit and a wall-mounted indoor unit as described above.

[0016] Based on the technical solution of this application, a wall-mounted air conditioner indoor unit includes a casing, an air duct assembly, and a heat exchanger. The casing includes a top plate, a bottom plate, a front plate, and a rear plate. The top and bottom plates are spaced apart in the height direction. The front and rear plates are spaced apart in a first direction. A portion of the top plate is open to form an upper air vent. A portion of the bottom plate is open to form a lower air vent. The air duct assembly is disposed within the casing to change the airflow path within the casing. The heat exchanger is disposed within the casing and positioned in the first direction between the front plate and the air duct assembly. The wall-mounted air conditioner indoor unit has an air outlet mode. In the air outlet mode, airflow enters the casing through one of the upper and lower air vents and flows to the gap between the heat exchanger and the front plate, then passes through the heat exchanger into the air duct assembly and exits the casing through the other of the upper and lower air vents. Wall-mounted air conditioner indoor units have two air vents, one at the top and one at the bottom. By controlling the movement of the air duct assembly, different vents can be used to output air in heating or cooling modes; for example, cold air can be directed upwards and hot air downwards. This effectively solves the problem of cold air blowing directly on people, causing discomfort and improving the user experience. Both vents are formed by through-holes in the top or bottom panel, simplifying the structure, reducing the number of parts needed to form the vents, lowering production and installation costs, and reducing control costs when switching between different airflow modes. Furthermore, by placing the two vents on the top and bottom panels respectively, one can be used as an outlet while the other as an inlet, significantly increasing the distance between the two vents and mitigating the problem of short-circuiting return air.

[0017] 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

[0018] 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:

[0019] 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.

[0020] 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.

[0021] 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.

[0022] Figure 4 This is a structural schematic diagram of the water receiving component of a wall-mounted air conditioner indoor unit according to some embodiments of this application.

[0023] Figure label:

[0024] 1. Casing; 11. Top panel; 12. Bottom panel; 13. Upper air vent; 14. Lower air vent; 15. Front panel; 16. Rear panel;

[0025] 2. Air duct assembly; 21. Rotary air duct structure; 211. Air duct wall; 212. Volute tongue; 213. Turntable; 22. Cross-flow fan blade;

[0026] 3. Air guide plate; 4. First lower air wall; 5. Second lower air wall; 6. Lower air duct baffle; 7. First upper air wall; 8. Second upper air wall; 9. Upper air duct baffle; 10. Heat exchanger;

[0027] A. Water receiving component; A1. First extension arm; A2. Second extension arm;

[0028] X, first direction; Z, altitude direction. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] To improve the above problems, refer to Figures 1-3The wall-mounted air conditioner indoor unit provided in some embodiments of this application includes a casing 1, an air duct assembly 2, and a heat exchanger 10. The casing 1 includes a top plate 11, a bottom plate 12, a front plate 15, and a rear plate 16. The top plate 11 and the bottom plate 12 are spaced apart in the height direction Z. The front plate 15 and the rear plate 16 are spaced apart in the first direction X. A portion of the top plate 11 is open to form an upper air vent 13. A portion of the bottom plate 12 is open to form a lower air vent 14. The air duct assembly 2 is disposed within the casing 1 to change the airflow path within the casing 1. The heat exchanger 10 is disposed within the casing 1 and positioned between the front plate 15 and the air duct assembly 2 in the first direction X. The wall-mounted air conditioner indoor unit has an air outlet mode. In the air outlet mode, the airflow enters the housing 1 through one of the upper air outlet 13 and the lower air outlet 14 and flows to the gap between the heat exchanger 10 and the front panel 15. Then it passes through the heat exchanger 10 into the air duct assembly 2 and exits the housing 1 through the other of the upper air outlet 13 and the lower air outlet 14.

[0035] In this embodiment, the housing 1 is generally rectangular, with the top plate 11 and bottom plate 12 both being thin-plate structures and substantially parallel to each other. The rear plate 16 is typically mounted on an indoor wall, and the front plate 15 faces indoors. The first direction X is the width direction of the housing 1, and the second direction is the length direction of the housing 1. Figures 1-3 The direction is perpendicular to the paper surface. The upper air vent 13 is a through hole extending through the thickness of the top plate 11, and the lower air vent 14 is a through hole extending through the thickness of the bottom plate 12. The upper air vent 13 can be used as both an air inlet and an air outlet. Similarly, the lower air vent 14 can be used as both an air inlet and an air outlet. In exhaust mode, when the upper air vent 13 is an air inlet, the lower air vent 14 is an air outlet. When the upper air vent 13 is an air outlet, the lower air vent 14 is an air inlet.

[0036] The wall-mounted air conditioner indoor unit of this application embodiment has two air vents, one above the other. By controlling the operation of the air duct assembly 2, different air vents can be used to output air in heating or cooling modes, for example, cold air outputs from the top and hot air outputs from the bottom. This solves the problem of cold air blowing directly on people and causing discomfort, thus improving the user experience. Furthermore, both air vents are formed by through holes in the top plate 11 or bottom plate 12, simplifying the structure of the two vents, reducing the number of parts required to form the vents, lowering the production and installation costs of the wall-mounted air conditioner indoor unit, and reducing the control costs when switching between different air output states. Moreover, by placing the two air vents on the top plate 11 and bottom plate 12 respectively, one vent can be used as an outlet while the other is used as an inlet, significantly increasing the distance between the two vents and thus improving the problem of short-circuiting of return air.

[0037] On the other hand, the heat exchanger 10 and the air duct assembly 2 are arranged at intervals in the first direction X, and the conventional air inlet structure is eliminated, which simplifies the overall structure and makes the layout more reasonable. This makes the size of the whole machine in the first direction X, or the width of the whole machine, smaller, which facilitates transportation and installation, and can occupy less space after installation.

[0038] refer to Figure 2 and Figure 3 In some embodiments, the air outlet mode includes a cooling mode and a heating mode. In cooling mode, airflow enters the housing 1 from the lower air outlet 14 and exits the housing 1 from the upper air outlet 13 under the action of the air duct assembly 2. In heating mode, airflow enters the housing 1 from the upper air outlet 13 and exits the housing 1 from the lower air outlet 14.

[0039] Specifically, in cooling mode, after the airflow enters the casing 1 through the lower air vent 14, it flows in the first direction X to the gap between the front panel 15 and the heat exchanger 10, then passes through the heat exchanger 10 and enters the air duct assembly 2. During this process, it is cooled by the heat exchanger 10 to form a cold airflow. The cold airflow flows to the upper air vent 13 under the action of the air duct assembly 2 and is blown into the room through the upper air vent 13. In heating mode, after the airflow enters the casing 1 through the upper air vent 13, it flows in the first direction X to the gap between the front panel 15 and the heat exchanger 10, then passes through the heat exchanger 10 and enters the air duct assembly 2. During this process, it is heated by the heat exchanger 10 to form a hot airflow. The hot airflow flows to the lower air vent 14 under the action of the air duct assembly 2 and is blown into the room through the lower air vent 14.

[0040] In cooling mode, air is discharged from the upper vent 13 to avoid cold air blowing directly on people and causing discomfort; and in heating mode, air is discharged from the lower vent 14, so that hot air can reach the ground directly through the lower vent 13 to quickly warm the room. Moreover, the mode of cold air being discharged from the top and hot air being discharged from the bottom changes the flow and circulation path of cold or hot air in the indoor space, expands the range of influence of cold or hot air, and improves the user experience.

[0041] refer to Figure 1 In some embodiments, the wall-mounted air conditioner indoor unit further includes a first lower air wall 4, a second lower air wall 5, and a lower air duct baffle 6 disposed within the casing 1. The first lower air wall 4 and the second lower air wall 5 are located on the front and rear sides of the lower air outlet 14, respectively, to form a lower air duct. The lower air duct baffle 6 is rotatably connected to the first lower air wall 4. In cooling mode, the lower air duct baffle 6 rotates to abut against the second lower air wall 5 and cover the passage surface of the lower air duct to block airflow. In heating mode, the lower air duct baffle 6 rotates to overlap the open portion of the base plate 12.

[0042] Specifically, the first downwind wall 4 and the second downwind wall 5 are spaced apart on the front and rear sides of the downwind opening 14, or in other words, the first downwind wall 4 and the second downwind wall 5 are spaced apart in the first direction X. Both the first downwind wall 4 and the second downwind wall 5 are arc-shaped plates to form an arc-shaped downwind duct. The arc-shaped wall surface of the downwind duct serves to guide the hot airflow to the downwind opening 14 in heating mode.

[0043] In cooling mode, the lower air duct baffle 6 blocks the area where the lower air duct leads to the air duct assembly 2. This prevents airflow from directly entering the air duct assembly 2 after entering the casing 1 through the lower air outlet 14. Instead, the airflow flows in the first direction X to the gap between the heat exchanger 10 and the front panel 15, ensuring sufficient heat exchange between the airflow and the heat exchanger 10 and guaranteeing the cooling effect. The open portion of the base plate 12 has a front end and a rear end in the first direction X. In heating mode, the lower air duct baffle 6 rotates to overlap the front end of the open portion of the base plate 12, connecting the lower air outlet 14 and the air duct assembly 2. Hot airflow can then be smoothly blown out through the lower air duct, ensuring the heating effect.

[0044] In some embodiments, the wall-mounted air conditioner indoor unit further includes a first upper air wall 7, a second upper air wall 8, and an upper air duct baffle 9 disposed within the casing 1. The first upper air wall 7 and the second upper air wall 8 are located on the front and rear sides of the upper air outlet 13, respectively, to form an upper air duct. The upper air duct baffle 9 is rotatably connected to the first upper air wall 7. In cooling mode, the upper air duct baffle 9 rotates to overlap the open portion of the top plate 11. In heating mode, the upper air duct baffle 9 rotates to abut against the second upper air wall 8 and cover the passage surface of the upper air duct to block airflow.

[0045] Specifically, the first upper air wall 7 and the second upper air wall 8 are located on the front and rear sides of the upper air vent 13, or in other words, the first upper air wall 7 and the second upper air wall 8 are spaced apart in the first direction X. Both the first upper air wall 7 and the second upper air wall 8 are arc-shaped plates, and they are basically parallel to each other so as to guide the cold airflow to the upper air vent 13 in the cooling mode.

[0046] In heating mode, the upper air duct baffle 9 blocks the area where the upper air duct leads to the air duct assembly 2. This prevents the airflow from directly entering the air duct assembly 2 after entering the casing 1 through the upper air inlet 13. Instead, the airflow flows in the first direction X to the gap between the heat exchanger 10 and the front panel 15, allowing the airflow to fully exchange heat with the heat exchanger 10 and ensuring heating performance. The opening of the top panel 11 has a front end and a rear end in the first direction X. In cooling mode, the upper air duct baffle 9 rotates to overlap the front end of the opening of the top panel 11, connecting the upper air duct between the upper air inlet 13 and the air duct assembly 2. Cold air can then be smoothly blown out through the upper air duct, ensuring cooling performance.

[0047] In some embodiments, the air duct assembly 2 includes a rotating air duct structure 21 and a cross-flow fan blade 22. The rotating air duct structure 21 is disposed radially outside the cross-flow fan blade 22, and the rotating air duct structure 21 partially covers the cross-flow fan blade 22 in the circumferential direction. The rotating air duct structure 21 is rotatable relative to the cross-flow fan blade 22 to change the airflow direction within the air duct assembly 2. A second lower air wall 5 extends from inside the housing 1 to the opening of the bottom plate 12 and forms one side wall of the lower air duct channel wall. A first lower air wall 4 extends from inside the housing toward the opening of the bottom plate 12, and a lower air duct baffle 6 is rotatably connected to the end of the first lower air wall 4 near the lower air outlet 14. In heating mode, the first lower air wall 4 and the lower air duct baffle 6 together form the other side wall of the lower air duct channel wall.

[0048] Specifically, the rotating duct structure 21 only covers a portion of the cross-flow fan 22 in the circumferential direction, rather than covering or enclosing the cross-flow fan 22 in the entire circumferential direction. The axis of the cross-flow fan 22 extends along a second direction, and the rotating duct structure 21 is a structure that extends in the second direction to cover the cross-flow fan 22 in the second direction. The rotating duct structure 21 is configured to be rotatable around the axis of the cross-flow fan 22 to cover different positions of the cross-flow fan 22 in the circumferential direction, thereby allowing the airflow to flow towards a position closer to the upper air outlet 13 or the lower air outlet 14 after passing through the heat exchanger 10 and entering the duct assembly 2, thus achieving a switching of the air outlet position.

[0049] The trajectory of the outer edge of the rotating duct structure 21, which is radially away from the cross-flow fan 22, during its rotation around the axis of the cross-flow fan 22 is defined as the trajectory circle. The first ends of both the first lower air wall 4 and the second lower air wall 5 are located on the trajectory circle. The second end of the first lower air wall 4 is spaced from the base plate 12 in the height direction Z, and the second end of the second lower air wall 5 extends to the base plate 12, located at the rear end of the open portion of the base plate 12. The second lower air wall 5 forms the rear sidewall of the lower air duct's channel wall (i.e., closer to the rear plate 16), and the first lower air wall 4 forms part of the front sidewall of the lower air duct's channel wall (i.e., closer to the front plate 15). In cooling mode, the front wall of the lower air duct is incomplete because the lower air duct baffle 6 rotates to abut against the second lower air wall 5. Only in heating mode does the lower air duct baffle 6 rotate to overlap the open part of the base plate 12, and the first lower air wall 4 and the lower air duct baffle 6 together form the complete front wall of the lower air duct (at this time, the lower air duct baffle 6 is another part of the front wall of the lower air duct). As for the second lower air wall 5, the rear wall of the lower air duct formed by the second lower air wall 5 is complete in both cooling and heating modes.

[0050] In this embodiment, the cooperation of the first lower air wall 4 and the lower air duct baffle 6 makes the lower air duct blocked in the cooling mode, increasing the gap between the area near the second end of the first lower air wall 4 and the bottom plate 12, so that the airflow can flow more smoothly along the first direction X to the gap between the heat exchanger 10 and the front plate 15, reducing the flow resistance of the airflow and thus reducing energy consumption.

[0051] In some embodiments, the second upper air wall 8 extends from inside the housing 1 to the opening of the top plate 11 and forms one side wall of the upper air duct channel wall. The first upper air wall 7 extends from inside the housing 1 toward the opening of the top plate 11. The upper air duct baffle 9 is rotatably connected to the first upper air wall 7 near the upper air outlet 13. In cooling mode, the first upper air wall 7 and the upper air duct baffle 9 together form the other side wall of the upper air duct channel wall.

[0052] In this embodiment, the first ends of both the first upper air wall 7 and the second upper air wall 8 are located on the trajectory circle formed by the outer edge of the rotating air duct structure 21 away from the cross-flow fan blade 22 during rotation, as described in the previous embodiment. The second end of the first upper air wall 7 is spaced from the top plate 11 in the height direction Z, and the second end of the second upper air wall 8 extends to the top plate 11. The second upper air wall 8 forms the rear side wall of the upper air duct channel wall (i.e., closer to the rear plate 16), and the first upper air wall 7 forms part of the front side wall of the upper air duct channel wall (i.e., closer to the front plate 15). In heating mode, because the upper air duct baffle 9 rotates to abut against the second upper air wall 8, the front side wall of the upper air duct channel wall is incomplete. Only in cooling mode, the upper air duct baffle 9 rotates to overlap the open part of the top plate 11, and the first upper air wall 7 and the upper air duct baffle 9 together form the complete front side wall of the upper air duct channel wall (at this time, the upper air duct baffle 9 is another part of the front side wall of the upper air duct channel wall). As for the second upper wind wall 8, the rear wall of the upper wind duct formed by the second upper wind wall 8 is intact, regardless of whether it is in cooling mode or heating mode.

[0053] By cooperating with the first upper air wall 7 and the upper air duct baffle 9, the upper air duct is blocked in the heating mode, increasing the gap between the area near the second end of the first upper air wall 7 and the top plate 11, so that the airflow can flow more smoothly along the first direction X to the gap between the heat exchanger 10 and the front plate 15, reducing the flow resistance of the airflow and thus reducing energy consumption.

[0054] In some embodiments, the upper air duct baffle 9 is rotatably connected to the second end of the first upper air wall 7. This arrangement increases the distance between the second end of the first upper air wall 7 and the top plate 11, thereby increasing the smoothness of airflow from the upper air vent 13 into the housing 1 in heating mode.

[0055] In other embodiments, the upper air duct baffle 9 is rotatably connected to the middle region of the first upper air wall 7, and the second end of the first upper air wall 7 extends relative to the rotation axis of the upper air duct baffle 9.

[0056] In this embodiment, when the indoor unit of the wall-mounted air conditioner is in heating mode, the upper air duct baffle 9 rotates to abut against the second upper air wall 8. At this time, the first upper air wall 7 and the upper air duct baffle 9 form a Y-shaped structure. The part of the first upper air wall 7 that extends out relative to the rotation axis of the upper air duct baffle 9 can be used to fix the end of the heat exchanger 10 near the top plate 11, thereby improving the stability of the heat exchanger 10.

[0057] refer to Figure 4 In some embodiments, the wall-mounted air conditioner indoor unit further includes a water receiving component A fixedly connected to the first lower air wall 4. The water receiving component A is located on the lower side of the heat exchanger 10 near the bottom plate 12, and is fixedly connected to the first lower air wall 4. The water receiving component A is used to collect condensate formed at the heat exchanger 10 and also to support the heat exchanger 10. The water receiving component A includes a first extension arm A1 and a second extension arm A2. The first extension arm A1 is connected to the first end of the second extension arm A2. The first extension arm A1 extends towards the air duct assembly 2 in the height direction Z, and the second extension arm A2 extends towards the air duct assembly 2 in the first direction X and connects to the second end of the first lower air wall 4. The first extension arm A1, the second extension arm A2, and the first lower air wall 4 form an approximately triangular structure. This configuration improves the structural stability of the heat exchanger 10, the water receiving component A, and the first lower air wall 4.

[0058] In some embodiments, the rotating air duct structure 21 includes an air duct wall 211 and a volute tongue 212 spaced apart in the circumferential direction. In heating mode, the air duct wall 211 and the volute tongue 212 rotate such that the air duct wall 211 abuts against the first lower air wall 4, and the volute tongue 212 abuts against the second lower air wall 5. In cooling mode, the air duct wall 211 and the volute tongue 212 rotate such that the volute tongue 212 abuts against the first upper air wall 7, and the air duct wall 211 abuts against the second upper air wall 8.

[0059] Specifically, the duct wall 211 and the volute tongue 212 are relatively fixed and rotate together. The duct wall 211 and the volute tongue 212 cover different positions of the cross-flow fan blade 22 in the circumferential direction. In the radial direction, one end of the duct wall 211 and the volute tongue 212 forms an air inlet duct, and the other end forms an air outlet duct.

[0060] In this embodiment, in heating mode, the upper air inlet 13 is used as an air inlet and the lower air inlet 14 is used as an air outlet. Therefore, it is necessary to control the air duct wall 211 to abut against the first lower air wall 4 and the volute tongue 212 to abut against the second lower air wall 5, so that the air inlet air duct is close to the heat exchanger 10 and the air outlet air duct is connected to the lower air duct. This allows the airflow to pass through the heat exchanger 10 and enter the rotating air duct structure 21. Under the action of the cross-flow fan blades 22, the airflow can enter the lower air duct relatively smoothly and be blown into the room from the lower air inlet 14, thereby realizing the downward discharge of hot air. In cooling mode, the upper air vent 13 is used as an air outlet and the lower air vent 14 is used as an air inlet. Therefore, it is necessary to control the volute tongue 212 to abut against the first upper air wall 7 and the air duct wall 211 to abut against the second upper air wall 8, so that the air inlet air duct is close to the heat exchanger 10 and the air outlet air duct is connected to the upper air duct. This allows the airflow to pass through the heat exchanger 10 and enter the rotating air duct structure 21. Under the action of the cross-flow fan blades 22, it can smoothly enter the upper air duct and be blown into the room from the upper air vent 13, thereby achieving the upward exhaust of cold air.

[0061] In summary, the positions of the air inlet and outlet of the indoor unit of the air conditioner in the embodiments of this application are different in the cooling mode and the heating mode. Therefore, in order to adapt to the changes in the air inlet and outlet, the rotating air duct structure 21 in some embodiments of this application is configured to be rotatably set. This allows the position of the air outlet of the rotating air duct structure 21 to be adapted to the upper air outlet 13 or the lower air outlet 14, thereby making the airflow smoother, reducing wind resistance, optimizing performance, and making the airflow direction controllable, so as to realize that cold air is discharged from the top and hot air is discharged from the bottom.

[0062] In some embodiments, the wall surface of the duct wall 211 is smoothly connected to the wall surface of the first downwind wall 4, and the wall surface of the volute tongue 212 is smoothly connected to the wall surface of the second downwind wall 5, thereby improving the sealing of the connection between the outlet duct and the downwind duct, ensuring that hot air enters the downwind duct, and reducing the leakage of hot air from the connection between the outlet duct and the downwind duct to areas outside the downwind duct.

[0063] In some embodiments, the first ends of the first lower air wall 4 and the second lower air wall 5 are respectively provided with limiting structures for abutting against the air duct wall 211 and the volute tongue 212, so as to improve the stability of their abutting against the air duct wall 211 and the volute tongue 212, and also help to enable the rotating air duct structure 21 to rotate to the accurate position when switching different air outlet states.

[0064] In some embodiments, the wall surface of the duct wall 211 smoothly transitions to the wall surface of the second upper air wall 8. The wall surface of the volute tongue 212 smoothly transitions to the wall surface of the first upper air wall 7. This improves the sealing performance at the junction of the outlet duct and the upper air duct, ensuring that cold airflow enters the lower air duct and reducing the leakage of cold airflow from the junction of the outlet duct and the upper air duct to areas outside the upper air duct.

[0065] In some embodiments, the first ends of the first upper air wall 7 and the second upper air wall 8 are respectively provided with limiting structures for abutting against the air duct wall 211 and the volute tongue 212, so as to improve the stability of their abutting against the air duct wall 211 and the volute tongue 212, and also help to enable the rotating air duct structure 21 to rotate to the accurate position when switching different air outlet states.

[0066] In some embodiments, the heat exchanger 10 is spaced apart from the top plate 11 and the bottom plate 12 at its upper and lower ends in the height direction Z, respectively, and a gap is formed between the heat exchanger 10 at its upper and lower ends in the height direction Z and the top plate 11 and the bottom plate 12 to allow airflow to flow in the first direction X.

[0067] Specifically, the end of the heat exchanger 10 closest to the top plate 11 in the height direction Z is called the top end, and the end of the heat exchanger 10 closest to the bottom plate 12 in the height direction Z is called the bottom end. In cooling mode, the lower air duct baffle 6 rotates to abut against the second lower air wall 5, and the upper air duct baffle 9 rotates to overlap the front end of the upper air outlet 13. At this time, the area between the second end of the first lower air wall 4 and the bottom plate 12 is connected to the area between the bottom end of the heat exchanger 10 and the bottom plate 12. After the airflow enters the casing 1 from the lower air outlet 14, it can flow to the gap between the heat exchanger 10 and the front plate 15 in the area below the lower air duct baffle 6, the second end of the first lower air wall 4, and the bottom end of the heat exchanger 10. It will not directly enter the rotating air duct structure 21 through the lower air duct. Moreover, while the upper air duct baffle 9 cooperates with the first upper air wall 7 to form the front side wall of the complete upper air duct channel wall, it also seals the area between the top end of the heat exchanger 10 and the top plate 11. This prevents the airflow in the gap between the heat exchanger 10 and the front plate 15 from entering the upper air duct. Instead, it can only pass through the heat exchanger 10 for heat exchange and then enter the rotating air duct structure 21. Under the action of the cross-flow fan blade 22, it enters the upper air duct and is finally discharged from the upper air outlet 13.

[0068] Similarly, in heating mode, the upper air duct baffle 9 rotates to abut against the second upper air wall 8, and the lower air duct baffle 6 rotates to overlap the front end of the lower air vent 14. At this time, the area between the second end of the first upper air wall 7 and the top plate 11 is connected to the area between the top of the heat exchanger 10 and the top plate 11. After the airflow enters the casing 1 from the upper air outlet 13, it can flow through the area above the upper air duct baffle 9, the second end of the first upper air wall 7, and the top of the heat exchanger 10 to the gap between the heat exchanger 10 and the front plate 15. It will not directly enter the rotating air duct structure 21 through the upper air duct. Moreover, while the lower air duct baffle 6 cooperates with the first lower air wall 4 to form the front side wall of the complete lower air duct channel wall, it also seals the area between the bottom end of the heat exchanger 10 and the bottom plate 12. This prevents the airflow in the gap between the heat exchanger 10 and the front plate 15 from entering the lower air duct. Instead, it can only pass through the heat exchanger 10 for heat exchange and then enter the rotating air duct structure 21. Under the action of the cross-flow fan blade 22, it enters the lower air duct and is finally discharged from the lower air outlet 14.

[0069] Based on the solution in this embodiment, the flow path of the airflow after entering the casing 1 can be optimized, so that the airflow can fully exchange heat with the heat exchanger 10, improve the heat exchange efficiency, and thereby improve the cooling or heating effect.

[0070] Furthermore, it's worth noting that conventional wall-mounted air conditioner indoor units typically have a return air vent (i.e., an air inlet). The return air vent can be located on the front panel or top panel, and it's a separate structure from the air inlet. In this embodiment, based on the layout of the heat exchanger 10, space is provided within the casing 1 for airflow along the first direction X. The airflow is not interfered with by the end structure of the heat exchanger 10, thus eliminating the need for a conventional return air vent structure. This results in the entire unit having only two air vents: an upper vent and a lower vent, further simplifying the overall structure and reducing manufacturing and control costs.

[0071] In some embodiments, the rotating air duct structure 21 and the cross-flow fan blade 22 are coaxially arranged.

[0072] Specifically, the rotating air duct structure 21 includes an air duct wall 211 and a volute tongue 212 spaced apart in the circumferential direction, and both the air duct wall 211 and the volute tongue 212 extend in the second direction. The rotating air duct structure 21 is generally similar to a discontinuous cylindrical structure in the circumferential direction. Based on this, the rotating air duct structure 21 is coaxially arranged with the cross-flow fan blade 22, which can ensure that the gap between the air duct wall 211 and the surface of the cross-flow fan blade 22 is constant during the rotation of the rotating air duct structure 21 around the cross-flow fan blade 22, and the gap between the volute tongue 212 and the surface of the cross-flow fan blade 22 is also constant. The air outlet performance in the two states of cold air outlet and hot air outlet is similar. In addition, this arrangement also makes the overall structure of the air duct assembly 2 regular and easy to install and position.

[0073] In some embodiments, the rotating air duct structure 21 further includes a turntable 213 disposed at the ends of the air duct wall 211 and the volute tongue 212 in a second direction, wherein the air duct wall 211 and the volute tongue 212 are both fixedly connected to the turntable 213. The turntable 213 is connected to a motor drive, for example, and the motor drives the turntable 213 to rotate, thereby causing the air duct wall 211 and the volute tongue 212 to rotate.

[0074] In some embodiments, the wall-mounted air conditioner indoor unit further includes an air guide plate 3, which is rotatably disposed at one of the upper air vent and the lower air vent for opening or closing one of the upper air vent and the lower air vent. The wall-mounted air conditioner indoor unit also has a shutdown mode, in which the air guide plate rotates to close one of the upper air vent and the lower air vent, and in the air outlet mode, the air guide plate rotates to open one of the upper air vent and the lower air vent.

[0075] For example, the air guide plate 3 is set at the downwind vent 14. In the off mode, the air guide plate 3 closes the downwind vent 14, while the upwind vent 13 remains open. In other words, the upwind vent 13 is always open. Based on this, when switching from the off mode to the air outlet mode, it is only necessary to control the air guide plate 3 to open the downwind vent 14. There is no need to control the state of the upwind vent 13. The entire switching process is simple and efficient.

[0076] In other embodiments, the air guide plate 3 is located at the upper air outlet 13. In the power-off mode, the air guide plate 3 closes the upper air outlet 13, while the lower air outlet 14 remains open. In other words, the lower air outlet 14 is normally open. Based on this, when switching from the power-off mode to the air outlet mode, it is only necessary to control the air guide plate 3 to open the upper air outlet 13, without needing to control the state of the lower air outlet 14. At this time, the external airflow can enter the housing 1 through the lower air outlet 14. The entire switching state is simple and efficient.

[0077] In some embodiments, in the power-off mode, the upper air duct baffle 9 overlaps with the front end of the open portion of the top plate 11, and the lower air duct baffle 6 abuts against the second lower air wall 5. The advantage of this is that the front side wall of the upper air duct is intact. After external dust enters the casing 1, it will be caught by the lower air duct baffle 6. When the whole machine switches to the air outlet mode, the lower air duct baffle 6 rotates to overlap with the front end of the open portion of the bottom plate 12, and the air guide plate 3 opens the lower air outlet 14. The dust can slide along the front side wall of the lower air duct and be discharged into the casing 1. If, in the power-off mode, the upper air duct baffle 9 abuts against the second upper air wall 8, the dust will fall into the casing 1 through the upper air outlet 13 and remain on the side of the upper air duct baffle 9 facing the upper air outlet 13. It will be impossible to discharge this dust smoothly into the casing 1 when switching to the air outlet mode. Furthermore, in this embodiment, when switching from the power-off mode to the cooling mode, simply control the air guide plate 3 to open the lower air vent 14; there is no need to control the upper air duct baffle 9 and the lower air duct baffle 6 to rotate. The switching process is simple and efficient, achieving rapid cooling and improving the user experience when there is a need for cooling. Alternatively, when switching from the cooling mode to the power-off mode, simply control the air guide plate 3 to close the lower air vent 14; the power-off process is efficient.

[0078] Some embodiments of this application also provide an air conditioning system, including an outdoor air conditioning unit and a wall-mounted indoor air conditioning unit as described above.

[0079] The air conditioning system in this embodiment can achieve cooling with top air outlet and heating with bottom air outlet, improving the user experience. In addition, the air outlet structure of the indoor unit is simplified, resulting in lower manufacturing and control costs.

[0080] 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: The housing (1) includes a top plate (11), a bottom plate (12), a front plate (15), and a rear plate (16). The top plate (11) and the bottom plate (12) are spaced apart in the height direction (Z), and the front plate (15) and the rear plate (16) are spaced apart in the first direction (X). A portion of the top plate (11) is open to form an upwind vent (13), and a portion of the bottom plate (12) is open to form a downwind vent (14). The air duct assembly (2) is disposed inside the housing (1) and is used to change the flow path of the airflow inside the housing (1); and A heat exchanger (10) is disposed inside the housing (1) and in the first direction (X) between the front plate (15) and the air duct assembly (2); The wall-mounted air conditioner indoor unit has an air outlet mode. In the air outlet mode, the airflow enters the casing (1) through one of the upper air outlet (13) and the lower air outlet (14) and flows to the gap between the heat exchanger (10) and the front panel (15). Then, it passes through the heat exchanger (10) and enters the air duct assembly (2) and flows out of the casing (1) through the other of the upper air outlet (13) and the lower air outlet (14).

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The air outlet mode includes a cooling mode and a heating mode. In the cooling mode, the airflow enters the housing (1) from the lower air outlet (14) and exits the housing (1) from the upper air outlet (13) under the action of the air duct assembly (2). In the heating mode, the airflow enters the housing (1) from the upper air outlet (13) and exits the housing (1) from the lower air outlet (14).

3. The wall-mounted air conditioner indoor unit according to claim 2, characterized in that, It also includes a first lower air wall (4), a second lower air wall (5), and a lower air duct baffle (6) disposed inside the housing (1). The first lower air wall (4) and the second lower air wall (5) are respectively located on the front and rear sides of the lower air outlet (14) to form a lower air duct. The lower air duct baffle (6) is rotatably connected to the first lower air wall (4). In the cooling mode, the lower air duct baffle (6) rotates to abut against the second lower air wall (5) and cover the channel surface of the lower air duct to block the airflow. In the heating mode, the lower air duct baffle (6) rotates to overlap the open part of the bottom plate (12).

4. The wall-mounted air conditioner indoor unit according to claim 3, characterized in that, The air duct assembly (2) includes a rotating air duct structure (21) and a cross-flow fan blade (22). The rotating air duct structure (21) is disposed radially outside the cross-flow fan blade (22) and partially covers the cross-flow fan blade (22) in the circumferential direction. The rotating air duct structure (21) is rotatable relative to the cross-flow fan blade to change the airflow direction within the air duct assembly (2). The second lower air wall (5) extends from inside the housing (1) to the opening of the bottom plate (12) and forms one side wall of the channel wall of the lower air duct. The first lower air wall (4) extends from inside the housing toward the opening of the bottom plate (12). The lower air duct baffle (6) is rotatably connected to the end of the first lower air wall (4) near the lower air outlet (14). In the heating mode, the first lower air wall (4) and the lower air duct baffle (6) together form the other side wall of the channel wall of the lower air duct.

5. The wall-mounted air conditioner indoor unit according to claim 3, characterized in that, The air duct assembly (2) includes a rotating air duct structure (21) and a cross-flow fan blade (22). The rotating air duct structure (21) is disposed radially outside the cross-flow fan blade (22) and partially covers the cross-flow fan blade (22) in the circumferential direction. The rotating air duct structure (21) is rotatable relative to the cross-flow fan blade (22). The rotating air duct structure (21) includes an air duct wall (211) and a volute tongue (212) spaced apart in the circumferential direction. In the heating mode, the air duct wall (211) and the volute tongue (212) rotate so that the air duct wall (211) abuts against the first lower air wall (4) and the volute tongue (212) abuts against the second lower air wall (5).

6. The wall-mounted air conditioner indoor unit according to claim 2, characterized in that, It also includes a first upper air wall (7), a second upper air wall (8), and an upper air duct baffle (9) disposed inside the housing (1). The first upper air wall (7) and the second upper air wall (8) are respectively located on the front and rear sides of the upper air outlet (13) to form an upper air duct. The upper air duct baffle (9) is rotatably connected to the first upper air wall (7). In the cooling mode, the upper air duct baffle (9) rotates to overlap the open part of the top plate (11). In the heating mode, the upper air duct baffle (9) rotates to abut against the second upper air wall (8) and cover the channel surface of the upper air duct to block the airflow.

7. The wall-mounted air conditioner indoor unit according to claim 6, characterized in that, The air duct assembly (2) includes a rotating air duct structure (21) and a cross-flow fan blade (22). The rotating air duct structure (21) is disposed radially outside the cross-flow fan blade (22) and partially covers the cross-flow fan blade (22) in the circumferential direction. The rotating air duct structure (21) is rotatable relative to the cross-flow fan blade (22) to change the airflow direction within the air duct assembly (2). The second upper air wall (8) extends from inside the housing (1) to the opening of the top plate (11) and forms one side wall of the upper air duct channel wall. The first upper air wall (7) extends from inside the housing (1) toward the opening of the top plate (11). The upper air duct baffle (9) is rotatably connected to the first upper air wall (7) near the upper air outlet (13). In the cooling mode, the first upper air wall (7) and the upper air duct baffle (9) together form the other side wall of the upper air duct channel wall.

8. The wall-mounted air conditioner indoor unit according to claim 6, characterized in that, The air duct assembly (2) includes a rotating air duct structure (21) and a cross-flow fan blade (22). The rotating air duct structure (21) is disposed radially outside the cross-flow fan blade (22) and partially covers the cross-flow fan blade (22) in the circumferential direction. The rotating air duct structure (21) is rotatable relative to the cross-flow fan blade (22). The rotating air duct structure (21) includes an air duct wall (211) and a volute tongue (212) spaced apart in the circumferential direction. In the cooling mode, the air duct wall (211) and the volute tongue (212) rotate so that the volute tongue (212) abuts against the first upper air wall (7) and the air duct wall (211) abuts against the second upper air wall (8).

9. The wall-mounted air conditioner indoor unit according to any one of claims 1 to 8, characterized in that, The heat exchanger (10) is spaced apart from the top plate (11) and the bottom plate (12) at its upper and lower ends in the height direction (Z), respectively, and a gap is formed between the heat exchanger (10) and the top plate (11) and the bottom plate (12) in the height direction (Z) to allow airflow to flow in the first direction (X).

10. The wall-mounted air conditioner indoor unit according to any one of claims 1 to 8, characterized in that, It also includes an air guide plate (3), which is rotatably disposed at one of the upper air vent and the lower air vent for opening or closing one of the upper air vent and the lower air vent. The wall-mounted air conditioner indoor unit also has a shutdown mode, in which the air guide plate rotates to close one of the upper air vent and the lower air vent, and in the air outlet mode, the air guide plate rotates to open one of the upper air vent and the lower air vent.

11. 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 10.

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