Wall-mounted air conditioner indoor unit and air conditioning system

Abstract

This application provides a wall-mounted air conditioner indoor unit and an air conditioning system. The wall-mounted air conditioner indoor unit includes a casing, a cross-flow fan blade, an upper air duct structure, and a lower air duct structure. The casing includes a front panel and a rear panel disposed opposite to each other. The casing has an upper air outlet at the top and a lower air outlet at the bottom. The cross-flow fan blade is rotatably disposed within the casing. The upper air duct structure is disposed above the cross-flow fan blade and includes an upper air duct wall and an upper volute. An upper air duct is formed between the upper air duct wall and the upper volute, facing the upper air outlet. The lower air duct structure is disposed below the cross-flow fan blade and includes a lower air duct wall and a lower volute. A lower air duct is formed between the lower air duct wall and the lower volute, facing the lower air outlet. The upper and lower air outlets are configured to be selectively opened to allow the wall-mounted air conditioner indoor unit to switch between an upper air outlet mode and a lower air outlet mode. In both the upper and lower air outlet modes, the cross-flow fan blade rotates in the same direction. This application improves user comfort.

Description

Technical Field

[0001] This application relates to the field of air conditioning, and in particular to an indoor air conditioning unit and an air conditioning system. Background Technology

[0002] Conventional air conditioner indoor units use a single air outlet structure, with the outlet located at the bottom 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, cold air can easily blow directly onto people, causing discomfort and potentially leading to air conditioning sickness over time.

[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 discloses a wall-mounted air conditioner indoor unit, comprising:

[0006] The housing includes a front panel and a rear panel arranged opposite each other. An air inlet is provided on the front panel, and the housing has an upper air outlet at the top and a lower air outlet at the bottom.

[0007] The cross-flow fan blades are rotatably mounted inside the casing;

[0008] An upper air duct structure is located above the cross-flow fan blades and includes an upper air duct wall and an upper volute tongue, forming an upper air duct facing the upper air outlet between the upper air duct wall and the upper volute tongue; and

[0009] The downdraft structure is located on the lower side of the cross-flow fan blades and includes a downdraft wall and a lower volute tongue, forming a downdraft duct facing the lower air outlet between the downdraft wall and the lower volute tongue.

[0010] The upper and lower air outlets are configured to be selectively opened to allow the wall-mounted air conditioner indoor unit to switch between upper and lower air outlet modes. In both modes, the cross-flow fan blades rotate in the same direction.

[0011] In some embodiments, the wall-mounted air conditioner indoor unit has a cooling state and a heating state, wherein in the cooling state, the upper air outlet is open and the lower air outlet is closed to allow the wall-mounted air conditioner indoor unit to enter an upper air outlet mode; and / or, in the heating state, the lower air outlet is open and the upper air outlet is closed to allow the wall-mounted air conditioner indoor unit to enter a lower air outlet mode.

[0012] In some embodiments, the lower duct wall is disposed on the side of the lower duct near the air inlet, and in the top air outlet mode, the lower duct wall is configured to move away from the cross-flow fan blades.

[0013] In some embodiments, the lower duct wall is configured to move relative to the cross-flow fan blades in a direction extending toward the base plate of the housing.

[0014] In some embodiments, the upper volute is disposed on the side of the upper air duct near the air inlet, and in the lower air outlet mode, the upper volute is configured to move away from the cross-flow fan blades.

[0015] In some embodiments, the upper volute tongue is configured to move toward the upper air duct wall along a direction perpendicular to the tangent of the upper volute tongue.

[0016] In some embodiments, the wall-mounted air conditioner indoor unit further includes an upper air guide plate disposed at the upper air outlet, the upper air guide plate being rotatably connected to the housing to open or close the upper air outlet; and / or, the wall-mounted air conditioner indoor unit further includes a lower air guide plate disposed at the lower air outlet, the lower air guide plate being rotatably connected to the housing to open or close the lower air outlet.

[0017] In some embodiments, the housing further includes a top plate, the front edge of which is located behind the front panel, an upper air outlet is formed between the front edge of the top plate and the front panel, and an upper air guide plate is rotatably connected to the top plate.

[0018] In some embodiments, in the top air outlet mode, the upper air guide plate rotates upward to open the upper air outlet and the upper air guide plate opens to a position that is approximately coplanar with the top plate.

[0019] In some embodiments, the housing includes a base plate, the lower edge of a rear plate is located above the base plate, a lower air outlet is formed between the base plate and the rear plate, and a lower air guide plate is rotatably connected to the rear plate.

[0020] In some embodiments, in the bottom air outlet mode, the bottom air guide plate rotates downward to open the bottom air outlet and the bottom air guide plate opens to a position that is approximately coplanar with the rear plate.

[0021] In some embodiments, the upper air duct wall and the lower volute tongue are integrally formed.

[0022] In some embodiments, the indoor unit of the wall-mounted air conditioner also includes a heat exchanger disposed in the casing, the heat exchanger and the cross-flow fan blades are arranged sequentially between the front panel and the rear panel, and the airflow entering from the air inlet is configured to pass through the heat exchanger first and then enter the cross-flow fan blades.

[0023] In some embodiments, the heat exchanger has a bent structure and includes a first heat exchanger section, a second heat exchanger section, and a third heat exchanger section, with cross-flow fan blades disposed within the space enclosed by the first heat exchanger section, the second heat exchanger section, and the third heat exchanger section.

[0024] A second aspect of this application provides an air conditioning system, including an outdoor unit and the aforementioned wall-mounted indoor unit.

[0025] Based on the technical solution of this application embodiment, a wall-mounted air conditioner indoor unit includes a casing, a cross-flow fan blade, an upper air duct structure, and a lower air duct structure. The casing includes a front panel and a rear panel disposed opposite to each other. An air inlet is provided on the front panel. The casing also has an upper air outlet at the top and a lower air outlet at the bottom. The cross-flow fan blade is rotatably disposed within the casing. The upper air duct structure is disposed above the cross-flow fan blade and includes an upper air duct wall and an upper volute. An upper air duct is formed between the upper air duct wall and the upper volute, facing the upper air outlet. The lower air duct structure is disposed below the cross-flow fan blade and includes a lower air duct wall and a lower volute. A lower air duct is formed between the lower air duct wall and the lower volute, facing the lower air outlet. The upper and lower air outlets are configured to be selectively opened to allow the wall-mounted air conditioner indoor unit to switch between an upper air outlet mode and a lower air outlet mode. In both the upper and lower air outlet modes, the cross-flow fan blade rotates in the same direction. The wall-mounted air conditioner indoor unit of this embodiment is equipped with an upper air outlet and a lower air outlet, which can be selectively opened to switch between upper and lower air outlet modes. During cooling, the indoor unit can enter upper air outlet mode, with cool air exiting from the upper outlet to avoid direct cold air blowing on the user and causing discomfort. During heating, the indoor unit can enter lower air outlet mode, with hot air exiting from the lower outlet, allowing the hot air to reach the ground directly and quickly warm the room, thus improving user comfort. Furthermore, the wall-mounted air conditioner indoor unit of this embodiment has an upper air duct structure facing the upper air outlet and a lower air duct structure facing the lower air outlet within the casing. Therefore, when controlling the air outlet mode switching, simply opening the corresponding air outlet and closing the other one simplifies the control process.

[0026] 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

[0027] 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:

[0028] Figure 1 This is a schematic diagram of the internal structure of a wall-mounted air conditioner indoor unit according to some embodiments of this application.

[0029] Figure 2 This is a schematic diagram of the internal structure of a wall-mounted air conditioner indoor unit in the top air outlet mode according to some embodiments of this application.

[0030] Figure 3 This is a schematic diagram showing the movement of the lower air duct wall of a wall-mounted air conditioner indoor unit according to some embodiments of this application.

[0031] Figure 4 This is a schematic diagram of the internal structure of a wall-mounted air conditioner indoor unit in the down-discharge mode according to some embodiments of this application.

[0032] Figure 5 This is a schematic diagram showing the movement of the upper volute of a wall-mounted air conditioner indoor unit according to some embodiments of this application.

[0033] Figure label:

[0034] 10. Casing; 11. Rear panel; 12. Top panel; 13. Bottom panel; 14. Front panel; 15. Upper air outlet; 16. Lower air outlet;

[0035] 20. Crossflow fan blades;

[0036] 30. Upwind duct structure; 31. Upwind duct wall; 32. Upper volute tongue;

[0037] 40. Downwind duct structure; 41. Downwind duct wall; 42. Lower volute tongue;

[0038] 50. Upper air guide plate; O. Upper rotating shaft;

[0039] 60. Lower air guide plate; P. Lower rotating shaft;

[0040] 70. Heat exchanger;

[0041] 80. Water tray. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] 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.

[0045] An air conditioner's indoor unit is connected to an outdoor unit to regulate the temperature of the indoor air, either 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 provide cooling; in heating mode, the heat exchanger acts as a condenser, releasing heat back into the air to provide heating.

[0046] Wall-mounted air conditioner indoor units are typically installed on the wall and located near the ceiling.

[0047] 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 casing. This means that in cooling mode, cold air can easily blow directly onto people, causing discomfort, and prolonged exposure to cold air can easily lead to air conditioning sickness.

[0048] To address the aforementioned issues, this application proposes a wall-mounted air conditioner indoor unit. The casing of this unit includes an upper air outlet at the top and a lower air outlet at the bottom. An upper air duct structure and a lower air duct structure are respectively provided inside the casing. By selectively opening the upper and lower air outlets, air is directed from the upper air outlet during cooling, thus avoiding direct cold air blowing and improving user comfort.

[0049] refer to Figures 1 to 5 The wall-mounted air conditioner indoor unit provided in some embodiments of this application includes a housing 10, a cross-flow fan blade 20, an upper air duct structure 30, and a lower air duct structure 40. The housing 10 includes a front panel 14 and a rear panel 11 disposed opposite to each other. An air inlet is provided on the front panel 14. The housing 10 also has an upper air outlet 15 located at the top and a lower air outlet 16 located at the bottom. The cross-flow fan blade 20 is rotatably disposed within the housing 10. The upper air duct structure 30 is disposed above the cross-flow fan blade 20 and includes an upper air duct wall 31 and an upper volute tongue 32. An upper air duct is formed between the upper air duct wall 31 and the upper volute tongue 32, leading to the upper air outlet 15. The lower air duct structure 40 is disposed below the cross-flow fan blade 20 and includes a lower air duct wall 41 and a lower volute tongue 42, forming a lower air duct leading to the lower air outlet 16. The upper air outlet 15 and the lower air outlet 16 are configured to be selectively opened to allow the wall-mounted air conditioner indoor unit to switch between an upper air outlet mode and a lower air outlet mode, in which the cross-flow fan blades 20 rotate in the same direction.

[0050] refer to Figure 2 In some embodiments, the wall-mounted air conditioner indoor unit is installed on the wall W and located near the ceiling C. (See reference...) Figure 1 The casing 10 of the wall-mounted air conditioner indoor unit includes a rear panel 11 disposed near the wall W, a front panel 14 disposed opposite to the rear panel 11, a top panel 12 disposed near the ceiling C, and a bottom panel 13 disposed opposite to the top panel 12. The front panel 14 and the rear panel 11 are spaced apart in the thickness direction Y.

[0051] In this embodiment, the front panel 14 is provided with an air inlet. Airflow enters the housing 10 through the air inlet and flows to different air outlets after being acted upon by the cross-flow fan blades 20. For example, the front panel 14 is provided with multiple air inlets spaced apart in the height direction Z to increase the air intake area, as shown in... Figure 2 As shown, airflow enters the interior of the housing 10 from different positions in the height direction Z.

[0052] refer to Figure 2 and Figure 4The housing 10 has an upper air outlet 15 located at the top and a lower air outlet 16 located at the bottom. The upper air outlet 15 is located at the top of the housing 10, and in some embodiments, the upper air outlet 15 is formed on the front panel 14; in other embodiments, the upper air outlet 15 is formed on the top plate 12. The lower air outlet 16 is located at the bottom of the housing 10, and in some embodiments, the lower air outlet 16 is formed on the bottom plate 13.

[0053] A cross-flow fan blade 20 is rotatably mounted within the housing 10. The axis of the cross-flow fan blade 20 extends approximately along the length of the housing 10, and the length direction, thickness direction Y, and height direction Z of the housing 10 are perpendicular to each other. The cross-flow fan blade 20 is configured to rotate about its own axis. For example, in one embodiment, the axial end of the cross-flow fan blade 20 may be provided with a drive mechanism for driving the rotation of the cross-flow fan blade 20, such as a drive motor. When the cross-flow fan blade 20 rotates, a negative pressure zone is formed on the side of the cross-flow fan blade 20 near the front panel 14, i.e., near the air inlet, which causes external air to be drawn in through the air inlet. After the airflow enters the interior of the cross-flow fan blade 20, it forms a vortex inside the cross-flow fan blade and is thrown to the outer edge under the action of centrifugal force, and is guided out by the air duct wall and the volute tongue.

[0054] This embodiment of the application incorporates two air duct structures within the housing 10: an upper air duct structure 30 and a lower air duct structure 40, located on the upper and lower sides of the cross-flow fan 20, respectively. The upper air duct structure 30 faces the upper air outlet 15, and the lower air duct structure 40 faces the lower air outlet 16. (Reference) Figure 1 The upper air duct structure 30 includes an upper air duct wall 31 and an upper volute tongue 32, wherein the upper air duct wall 31 is disposed on the radially outer side of the cross-flow fan blade 20 and is used to guide airflow to the upper air outlet. The lower air duct structure 40 includes a lower air duct wall 41 and a lower volute tongue 42, wherein the lower air duct wall 41 is disposed on the radially outer side of the cross-flow fan blade 20 and is used to guide airflow to the lower air outlet.

[0055] In this embodiment, the upper air outlet 15 and lower air outlet 16 of the housing 10 are configured to be selectively open. In the upper air outlet mode, the upper air outlet 15 is open and the lower air outlet 16 is closed; in the lower air outlet mode, the upper air outlet 15 is closed and the lower air outlet 16 is open. For example, this can be achieved through... Figure 1 As shown, air guide plates are installed at the upper air outlet 15 and the lower air outlet 16 to control the opening and closing of the air outlets.

[0056] The rotation direction of the cross-flow fan blade 20 in this embodiment is the same in both the upper and lower air outlet modes, meaning that the rotation direction of the cross-flow fan blade 20 does not need to be switched when switching air outlet modes. For example, in the upper air outlet mode, the cross-flow fan blade 20 rotates clockwise, and when switching to the lower air outlet mode, the cross-flow fan blade 20 still rotates clockwise without changing the rotation direction.

[0057] The wall-mounted air conditioner indoor unit of this embodiment is equipped with an upper air outlet 15 and a lower air outlet 16. The upper and lower air outlets can be selectively opened to switch between upper and lower air outlet modes. During cooling, the indoor unit can enter upper air outlet mode, with cool air exiting from the upper air outlet 15 to avoid direct cold air blowing on the user and causing discomfort. During heating, the indoor unit can enter lower air outlet mode, with hot air exiting from the lower air outlet 16. This allows hot air to reach the ground directly through the lower air outlet, achieving rapid room warming and improving user comfort. Of course, the wall-mounted air conditioner indoor unit of this embodiment can also be configured to use lower air outlet for rapid cooling during cooling and upper air outlet for heating to avoid direct hot air blowing, better meeting individual customer needs.

[0058] Furthermore, the wall-mounted air conditioner indoor unit of this application embodiment has an upper air duct structure 30 facing the upper air outlet and a lower air duct structure 40 facing the lower air outlet respectively provided in the casing 10. In this way, when controlling the air outlet mode switching, it is only necessary to open the corresponding air outlet and close the other air outlet to achieve the switching of upper and lower air outlets, which is simple to control. Correspondingly, only a drive structure for controlling the closing of the upper and lower air outlets is required, thus simplifying the structure of the entire wall-mounted air conditioner indoor unit.

[0059] In some embodiments, the wall-mounted air conditioner indoor unit has a cooling mode and a heating mode. In the cooling mode, the upper air outlet 15 is open and the lower air outlet 16 is closed, causing the wall-mounted air conditioner indoor unit to enter an upper air outlet mode. In the heating mode, the lower air outlet 16 is open and the upper air outlet 15 is closed, causing the wall-mounted air conditioner indoor unit to enter a lower air outlet mode. In the cooling mode, the wall-mounted air conditioner indoor unit enters the upper air outlet mode, and cool air is discharged from the upper air outlet 15 to avoid discomfort caused by cold air blowing directly on the human body. In the heating mode, the wall-mounted air conditioner indoor unit enters the lower air outlet mode, and hot air is discharged from the lower air outlet 16. This allows hot air to reach the ground directly through the lower air outlet, achieving the purpose of quickly warming the room and improving user comfort.

[0060] refer to Figures 1 to 5 In some embodiments, the wall-mounted air conditioner indoor unit also includes an upper air guide plate 50 disposed at the upper air outlet 15, the upper air guide plate 50 being rotatably connected to the housing 10 to open or close the upper air outlet 15.

[0061] refer to Figure 2 The upper air guide plate 50 is rotatably connected to the top plate 12 of the housing 10. Specifically, the first end of the upper air guide plate 50 is rotatably connected to the top plate 12, and the second end of the upper air guide plate 50 is rotatable around the first end. (Reference) Figure 1When the second end of the upper air guide plate 50 rotates to the position abutting against the front panel 14, the upper air outlet 15 closes; (Reference) Figure 2 When the second end of the upper air guide plate 50 rotates to a position away from the front panel 14, the upper air outlet 15 opens. The rotatable upper air guide plate 50 not only serves to open or close the upper air outlet 15, but also, by controlling the rotation of the upper air guide plate 50 to different positions, can adjust the air outlet direction or air volume.

[0062] The wall-mounted air conditioner indoor unit of this embodiment features an upper air guide plate 50 rotatably connected to the casing 10. In the upper air outlet mode, the upper air guide plate 50 is rotated upwards to open the upper air outlet; in the lower air outlet mode, it is closed. In other words, when switching between upper and lower air outlet modes, the wall-mounted air conditioner indoor unit of this embodiment only needs to open the corresponding air guide plate and close the other. Furthermore, since the upper air guide plate 50 is rotatably mounted on the casing 10, different air outlet directions and air volumes can be controlled by adjusting the rotation angle of the upper air guide plate 50, achieving more precise control and adjustment.

[0063] The wall-mounted air conditioner indoor unit also includes a lower air guide plate 60 located at the lower air outlet 16. The lower air guide plate 60 is rotatably connected to the housing 10 to open or close the lower air outlet 16.

[0064] refer to Figure 4 The lower air guide plate 60 is rotatably connected to the rear plate 11 of the housing 10. Specifically, the first end of the lower air guide plate 60 is rotatably connected to the rear plate 11, and the second end of the lower air guide plate 60 is rotatable around the first end. (Reference) Figure 1 When the second end of the lower air guide plate 60 rotates to the position where it abuts against the base plate 13, the lower air outlet 16 closes; (Reference) Figure 4 When the second end of the lower air guide plate 60 rotates to a position away from the base plate 13, the lower air outlet 16 opens. The rotatable lower air guide plate 60 not only opens or closes the lower air outlet 16, but also adjusts the airflow direction or volume by controlling the rotation of the lower air guide plate 60 to different positions.

[0065] The wall-mounted air conditioner indoor unit of this embodiment features a lower air guide plate 60 rotatably connected to the casing 10. In the lower air outlet mode, the air guide plate 60 rotates downwards to open the lower air outlet; in the upper air outlet mode, it closes. In other words, when switching between upper and lower air outlet modes, the wall-mounted air conditioner indoor unit of this embodiment only needs to open the corresponding air guide plate and close the other. Furthermore, since the lower air guide plate 60 is rotatably mounted on the casing 10, different air outlet directions and air volumes can be controlled by adjusting the rotation angle of the lower air guide plate 60, achieving more precise control and adjustment.

[0066] An upper air outlet 15 is formed between the top plate 12 and the front panel 14. One end of the front panel 14 near the top plate 12 is formed as an open opening, which serves as the upper air outlet. In some embodiments, the front edge of the top plate 12 is approximately flush with the front panel 14, such that when the upper air outlet is closed, the second end of the upper air guide plate 50 abuts against the front panel 14, and the upper air guide plate 50 is approximately perpendicular to the front panel 14.

[0067] In some other embodiments, the housing 10 also includes a top plate 12. The front edge of the top plate 12 is located behind the front panel 14, an upper air outlet 15 is formed between the front edge of the top plate 12 and the front panel 14, and an upper air guide plate 50 is rotatably connected to the top plate 12.

[0068] refer to Figure 1 and Figure 2 The front edge of the top plate 12 is located behind the front panel 14, meaning the length of the top plate 12 is less than the distance from the bottom plate 13 to the front panel 14. The first end of the upper air guide plate 50 is rotatably connected to the front edge of the top plate 12. When the upper air outlet 15 is closed, the second end of the upper air guide plate 50 abuts against the top edge of the front panel 14. The upper air guide plate 50 is inclined relative to the top plate 12, and the upper air guide plate 50 forms an obtuse angle with the top plate 12. (Reference) Figure 1 This arrangement makes the air outlet 15 of the upper air outlet in this embodiment inclined relative to the top plate 12, resulting in a larger area.

[0069] The wall-mounted air conditioner indoor unit of this application sets the front edge of the top plate 12 at the rear side of the front panel 14, which makes the air outlet area of ​​the upper air outlet between the top plate and the front panel larger, thus increasing the air volume.

[0070] In some embodiments, in the top air outlet mode, the upper air guide plate 50 rotates upward to open the upper air outlet and the upper air guide plate 50 is opened to a position that is approximately coplanar with the top plate 12.

[0071] refer to Figure 2In this embodiment, the upper air duct wall 31 extends to the front edge of the top plate 12. When the airflow exits from the upper air outlet 15, the airflow will spray out along the inner surface of the upper air duct wall 31. The upper air guide plate 50 opens to a position that is approximately coplanar with the top plate 12 and is approximately tangent to the upper air duct wall 31. At this time, the upper air guide plate 50 is located at the position with the least obstruction to the airflow, thereby making the airflow volume larger and the air conditioning operation energy efficiency higher.

[0072] In this embodiment of the wall-mounted air conditioner indoor unit, when in top-discharge mode, the upper air guide plate 50 is opened to a position approximately coplanar with the ceiling panel 12. At this position, the upper air outlet is fully open, and the upper air guide plate 50 is approximately tangent to the upper air duct wall 31. This air guide plate effectively blocks the airflow, reducing air volume loss and improving the air conditioner's energy efficiency. Furthermore, in cooling mode, the top-discharge mode ensures that the cold air is ejected almost parallel to the ceiling, creating a temperature transfer field in the vertical direction between the air outlet and the floor, resulting in uniform temperature diffusion and improved comfort. Moreover, the top-discharge mode prevents the cold air from blowing directly on the body. Importantly, because airflow from the top outlet avoids direct airflow onto the body, there is no need to adjust the position of the air guide plate to avoid this. Therefore, during cooling, the upper air guide plate 50 can be positioned approximately parallel to the ceiling panel 12, allowing for a larger airflow and improving the unit's heat exchange capacity.

[0073] In some embodiments, the housing 10 further includes a base plate 13, the lower edge of the rear plate 11 is located above the base plate 13, a lower air outlet 16 is formed between the base plate 13 and the rear plate 11, and a lower air guide plate 60 is rotatably connected to the rear plate 11.

[0074] refer to Figure 1 and Figure 4 The lower edge of the rear plate 11 is located above the base plate 13, meaning the lower end of the rear plate 11 forms a notch. The first end of the lower air guide plate 60 is rotatably connected to the lower edge of the rear plate 11. When the lower air outlet 16 is closed, the second end of the lower air guide plate 60 abuts against the base plate 13. The lower air guide plate 60 is inclined relative to the rear plate 11, and the angle between the lower air guide plate 60 and the rear plate 11 is obtuse. (Reference) Figure 1 This arrangement makes the air outlet 16 of the lower air outlet 16 in this embodiment inclined relative to the rear panel 11, resulting in a larger area.

[0075] The wall-mounted air conditioner indoor unit of this application sets the lower edge of the rear panel 11 on the upper side of the base plate 13, which makes the air outlet area of ​​the lower air outlet between the rear panel 11 and the base plate 13 larger, thus increasing the air volume.

[0076] refer to Figure 4In some embodiments, in the bottom air outlet mode, the bottom air guide plate 60 rotates downward to open the bottom air outlet and the bottom air guide plate 60 opens to a position that is substantially coplanar with the rear plate 11.

[0077] In this embodiment of the wall-mounted air conditioner, when the indoor unit is in the down-discharge mode, the lower air guide plate 60 rotates downward to a position approximately coplanar with the rear panel 11, that is, approximately parallel to the wall W. This ensures that during heating, the hot air is ejected almost parallel to the wall and directly onto the floor, forming a temperature transfer field between the air guide plate and the ceiling, resulting in uniform temperature diffusion and improved comfort. Furthermore, the hot air being ejected parallel to the wall also prevents it from blowing directly on people. Further, opening the lower air guide plate 60 to a position approximately coplanar with the rear panel 11 maximizes the airflow from the lower air outlet 16.

[0078] refer to Figure 1 The downwind duct wall 41 is located on the side of the downwind duct closest to the air inlet. (Reference) Figure 2 In the top air outlet mode, the upper air guide plate 50 rotates to the position where the upper air outlet is open, and the lower air guide plate 60 rotates to the position where the lower air outlet is closed. Airflow drawn in from the air inlet of the front panel 14 exits through the upper air outlet duct. Figure 2 As can be seen, the area above the upper air duct wall 31 and the upper volute tongue 32 of the cross-flow fan blade 20 forms the air outlet area, and the other side of the cross-flow fan blade 20 opposite to the air outlet area forms the air inlet area (i.e., the negative pressure area). If the resistance of the negative pressure area is large, it will cause the air inlet to be obstructed and reduce the air inlet area.

[0079] Based on the above problems, in some embodiments, reference is made to Figure 2 In the top air outlet mode, the lower air duct wall 41 is configured to move away from the cross-flow fan blade 20.

[0080] In some embodiments, in the top-discharge mode of the wall-mounted air conditioner indoor unit of this application, the lower air duct wall 41, which does not perform air discharge function, is moved away from the cross-flow fan blades 20. In some embodiments, refer to Figure 2 ,and Figure 1 By comparing the positions of the middle and lower wind tunnel walls 41, it can be seen that the position of the lower wind tunnel wall 41 is roughly shifted outward along its extension direction to reach... Figure 2 The lower duct wall 41 is moved away from the negative pressure zone, reducing resistance to the airflow and increasing the intake area, thereby improving the fan efficiency. In other embodiments, the lower duct wall 41 may also be positioned further away from the negative pressure zone. Figure 2 Based on the position shown, move it further towards the bottom plate. In other words, simply move the lower duct wall 41 to a position where it does not create resistance in the negative pressure zone of the cross-flow fan 20.

[0081] When the indoor unit of the wall-mounted air conditioner in this embodiment is in the top air outlet mode, the lower air duct wall 41 is moved away from the cross-flow fan blade 20 to increase the radial distance between the lower air duct wall 41 and the cross-flow fan blade, thereby avoiding the lower air duct wall 41 from generating resistance to the negative pressure area of ​​the cross-flow fan blade 20, increasing the air intake area, and improving the fan efficiency.

[0082] In some embodiments, the wall-mounted air conditioner indoor unit further includes a first drive mechanism configured to drive the lower air duct wall 41 to move away from the cross-flow fan blades 20 in the upper air outlet mode. The first drive mechanism may be a drive mechanism such as a linear motor.

[0083] In some embodiments, the downflow duct wall 41 is configured to move relative to the crossflow fan 20 in a direction extending toward the base plate 13.

[0084] like Figure 2 As shown, the base plate 13 includes a base plate body 131 and a bent section 132 located at the end of the base plate body 131 and perpendicular to the base plate body 131. The lower air duct wall 41 abuts against the bent section 132. Specifically, as... Figure 4 As shown, in the bottom air outlet mode, the bottom air duct wall 41 is in the first position; as Figure 2 As shown, in the top air outlet mode, the lower air duct wall 41 is in the second position, and the lower air duct wall 41 is configured to move relative to the cross-flow fan 20 toward the base plate 13 to switch from the first position to the second position.

[0085] In this embodiment, the lower duct wall 41 is configured to move relative to the cross-flow fan 20 along its own extending direction toward the base plate 13, thereby avoiding resistance from the lower duct wall 41 to the negative pressure zone of the cross-flow fan 20, increasing the air intake area, and improving fan efficiency. Furthermore, since the lower duct wall 41 moves along its own extending direction, the movement path is approximately straight, making control simpler and the drive mechanism setup simpler.

[0086] refer to Figure 2 In some embodiments, the upper volute tongue 32 is disposed on the side of the upper air duct near the air inlet. (See reference) Figure 3 In the bottom-outlet mode, the bottom outlet duct is active, while the top outlet duct is inactive. In this mode, the area below the cross-flow fan blades and located between the lower volute and the lower outlet wall forms the outlet zone. Correspondingly, the opposite side forms the inlet zone (negative pressure zone). High resistance in the negative pressure zone can obstruct airflow, reduce air volume, increase noise, and decrease fan efficiency.

[0087] Based on this issue, in the downward air outlet mode, the upper volute 32 is configured to move away from the cross-flow fan blade 20.

[0088] In some embodiments, in the down-discharge mode of the wall-mounted air conditioner indoor unit of this application, the upper volute 32, which does not perform the function of discharging air, moves away from the cross-flow fan blade 20. In some embodiments, refer to Figure 4 ,and Figure 1 By comparing the positions of the upper and middle cochlear tongues 32, it can be seen that the position of the upper cochlear tongue 32 is roughly shifted outward along a direction perpendicular to the tangent of the upper cochlear tongue 32 to reach... Figure 3 The position of the upper volute 32 is adjusted, meaning it is moved away from the cross-flow fan blade 20, and the distance between the upper volute 32 and the cross-flow fan blade is increased. This moves the upper volute 32 away from the negative pressure zone, reducing resistance to the airflow and increasing the air intake area, thereby improving the efficiency of the fan. In other embodiments, the upper volute 32 may also be positioned in... Figure 4 Based on the position shown, move it further towards the top plate. In other words, simply move the upper volute 32 to a position where it does not create resistance in the negative pressure zone of the cross-flow fan blade 20.

[0089] When the indoor unit of the wall-mounted air conditioner in this embodiment is in the down-discharge mode, the upper volute 32 is moved away from the cross-flow fan blade 20 to increase the radial distance between the upper volute 32 and the cross-flow fan blade, thereby avoiding the upper volute 32 from generating resistance to the negative pressure area of ​​the cross-flow fan blade 20, increasing the air intake area, and improving the fan efficiency.

[0090] In some embodiments, the wall-mounted air conditioner indoor unit further includes a second drive mechanism configured to drive the upward volute 32 away from the cross-flow fan blade 20 in the down-discharge mode. The second drive mechanism may be a drive mechanism such as a linear motor.

[0091] In some embodiments, such as Figure 4 As shown, the upper volute tongue 32 is configured to move towards the upper air duct wall 31 along a direction perpendicular to the tangent of the upper volute tongue 32. The upper volute tongue 32 is configured to move towards the upper air duct wall 31 along a direction perpendicular to the tangent of the upper volute tongue 32, as... Figure 4 As shown, the movement path from the worm tongue to the position of worm tongue 32 along the direction of arrow 32a is roughly a straight line, making control simpler and the setting of the drive mechanism simpler.

[0092] Of course, other methods can be used to move the upper volute tongue 32, as long as its position does not affect the resistance of the negative pressure zone of the cross-flow fan blade.

[0093] In some embodiments, the upper air duct wall 31 and the lower volute tongue 42 are integrally formed.

[0094] refer to Figures 1 to 5 The upper air duct wall 31 extends downward from the rear side of the cross-flow fan blade 20 to connect with the lower volute tongue 42 and is integrally formed.

[0095] In this embodiment, the upper air duct wall 31 and the lower volute tongue 42 are integrally formed, which ensures the accuracy of their relative positions. Furthermore, this integral formation reduces the number of parts and assembly steps.

[0096] In other embodiments, the upper air passage wall 31 and the lower volute tongue 42 are separately configured.

[0097] refer to Figure 2 and Figure 4 In some embodiments, the wall-mounted air conditioner indoor unit also includes a heat exchanger 70 disposed within the casing 10. The heat exchanger 70 and the cross-flow fan 20 are arranged sequentially between the front panel 14 and the rear panel 11, and the airflow entering from the air inlet is configured to first pass through the heat exchanger 70 and then enter the cross-flow fan 20.

[0098] In this embodiment of the application, the air inlet of the wall-mounted air conditioner indoor unit is located on the front panel, and during operation, the airflow first passes through the heat exchanger 70 and then enters the cross-flow fan blade 20. This allows the airflow to receive sufficient heat exchange before entering the cross-flow fan blade 20, thereby improving the heat exchange efficiency.

[0099] In some embodiments, the heat exchanger 70 has a bent structure and includes a first heat exchanger section, a second heat exchanger section, and a third heat exchanger section. A cross-flow fan 20 is disposed within the space enclosed by the first, second, and third heat exchanger sections, so that airflow entering through different locations of the heat exchanger 70 can be drawn in and expelled by the cross-flow fan 20, thereby improving the heat exchange capacity of the wall-mounted air conditioner indoor unit.

[0100] Specifically, the first heat exchanger section of heat exchanger 70 is perpendicular to the second heat exchanger section, and the third heat exchanger section is perpendicular to the second heat exchanger section.

[0101] This application also provides an air conditioning system, including an outdoor unit and the aforementioned wall-mounted indoor unit.

[0102] The following is based on Figures 1 to 5 The structure of a wall-mounted air conditioner indoor unit according to a specific embodiment of this application will be described in detail.

[0103] The wall-mounted air conditioner indoor unit of this embodiment is equipped with an upper air outlet and a lower air outlet. By controlling the upper and lower air guide plates to work together, the cooling air forms a sky curtain airflow and the heating air forms a ground curtain airflow. The cooling and heating airflow does not blow directly on people, and both can achieve maximum airflow operation, thereby improving the efficiency of air conditioner operation and making it more energy-efficient.

[0104] like Figure 1As shown, the wall-mounted air conditioner indoor unit of this embodiment includes a casing 10, a cross-flow fan blade 20, an upper air duct structure 30, a lower air duct structure 40, an upper air guide plate 50, a lower air guide plate 60, a heat exchanger 70, and a water collection tray 80.

[0105] The housing 10 includes a rear panel 11, a top panel 12, a bottom panel 13, and a front panel 14. The upper air duct structure 30 includes an upper air duct wall 31 and an upper volute tongue 32, and the lower air duct structure 40 includes a lower air duct wall 41 and a lower volute tongue 42.

[0106] The upper air guide plate 50 is rotatably mounted on the top plate 12 and rotates about the upper pivot O. The lower air guide plate 60 is rotatably connected to the bottom plate 13 (the bottom plate 13 can also be a bottom shell) and rotates about the lower pivot P.

[0107] like Figure 2 and Figure 3 As shown, when the unit is operating in cooling mode and enters the top air outlet mode, a canopy wind is formed, and the lower air duct wall 41 flows along... Figure 3 The arrow shown moves in the direction of the movement, and moves to... Figure 2 As shown, the position of the lower duct wall 41 after its movement should not affect the negative pressure zone formed by the cross-flow fan blades. When the cross-flow fan blades 20 rotate clockwise, a volute core is formed at the upper volute tongue 32. The upper guide plate 50 rotates around the upper pivot O until it is approximately parallel to the ceiling, and the airflow will be ejected from the upper duct formed by the combination of the upper volute tongue 32 and the upper duct wall 31.

[0108] like Figure 4 and Figure 5 As shown, when the unit is operating in heating mode and has entered the down-discharge mode, the floor curtain airflow is activated, and the upper volute tongue 32 is pressed. Figure 5 The arrow shown moves in the direction of the movement. Figure 4 As shown in the diagram, the position of the upper volute 32 after its movement should not affect the resistance of the negative pressure zone formed by the cross-flow fan blades. When the cross-flow fan blades rotate clockwise, a volute core is formed at the lower volute 42. When the lower guide vane rotates around the lower axis until it is roughly parallel to the wall, the airflow will be ejected from the lower duct formed by the combination of the lower volute and the lower duct wall.

[0109] As can be seen, the sky curtain wind and the ground curtain wind in this embodiment are constructed independently and do not affect each other. The wind duct structure is simple, and in order to ensure the air intake volume and reduce the air intake resistance when switching, it can be done by moving the upper volute tongue or the lower wind duct wall.

[0110] Alternatively, the upper air duct wall and the lower volute tongue can be designed as a single structure, forming an independent wall surface. In some embodiments, the upper air duct wall can also be set separately from the lower volute tongue.

[0111] For units operating in a ceiling-mounted cooling mode, considering that cold air naturally sinks, it is preferable to position the upper air guide plate parallel to the ceiling. For example... Figure 2As shown, the airflow from the ceiling is essentially projected parallel to the room's ceiling. Like a curtain, it sprays out horizontally, creating a temperature transfer field with the floor, resulting in even temperature distribution and a very comfortable feel. The cooling air doesn't blow directly on people, and the airflow is unaffected by the air guide vanes, demonstrating the unit's high heat exchange capacity and comfortable operation.

[0112] For floor curtain ventilation systems operating in heating mode, considering that hot air rises, it is preferable to position the lower air guide plate parallel to the wall. For example... Figure 5 As shown, the floor curtain airflow is sprayed out parallel to the walls within the room. Like a curtain, it reaches the floor and forms a temperature transfer field with the ceiling, resulting in even temperature distribution and a very comfortable feel. The heating air does not blow directly on people, and the airflow is not affected by the air guide vanes. The unit has high heat exchange capacity and provides comfort. This solves the problem of significant airflow reduction caused by the downward deflection of airflow in traditional air conditioners.

[0113] The air outlet of the wall-mounted air conditioner indoor unit in this embodiment creates good airflow in the room, which is beneficial for temperature diffusion, accelerates the heat exchange capacity of the room air, and makes the unit more energy-efficient. Furthermore, the opening angle of the upper and lower air guide vanes can lower and raise the air pressure, and the swing angle is wider in the unit's swing mode setting.

[0114] However, in other embodiments, the skylight can be used for both cooling and heating, and the low-level curtain can also be used for both cooling and heating. Neither of the two duct modes blows the air directly into the center of the room, and the air volume is stable at the same speed. The unit is not only comfortable to operate but also relatively energy-efficient.

[0115] 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: The housing (10) includes a front panel (14) and a rear panel (11) disposed opposite to each other. An air inlet is provided on the front panel (14), and the housing (10) has an upper air outlet (15) located at the top and a lower air outlet (16) located at the bottom. A cross-flow fan blade (20) is rotatably mounted inside the housing (10); An upper air duct structure (30) is provided on the upper side of the cross-flow fan blade (20) and includes an upper air duct wall (31) and an upper volute tongue (32), wherein an upper air duct is formed between the upper air duct wall (31) and the upper volute tongue (32) toward the upper air outlet (15); and The lower air duct structure (40) is disposed on the lower side of the cross-flow fan blade (20) and includes a lower air duct wall (41) and a lower volute tongue (42), and a lower air duct is formed between the lower air duct wall (41) and the lower volute tongue (42) facing the lower air outlet (16). The upper air outlet (15) and the lower air outlet (16) are configured to be selectively opened to allow the wall-mounted air conditioner indoor unit to switch between an upper air outlet mode and a lower air outlet mode, wherein the cross-flow fan blades (20) rotate in the same direction in both the upper and lower air outlet modes.

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The wall-mounted air conditioner indoor unit has a cooling state and a heating state. In the cooling state, the upper air outlet (15) is open and the lower air outlet (16) is closed to allow the wall-mounted air conditioner indoor unit to enter the upper air outlet mode; and / or, in the heating state, the lower air outlet (16) is open and the upper air outlet (15) is closed to allow the wall-mounted air conditioner indoor unit to enter the lower air outlet mode.

3. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The downdraft wall (41) is located on the side of the downdraft near the air inlet. In the top air outlet mode, the downdraft wall (41) is configured to move away from the cross-flow fan (20).

4. The wall-mounted air conditioner indoor unit according to claim 3, characterized in that, The lower air duct wall (41) is configured to move relative to the cross-flow fan blade (20) in the direction of its own extension toward the base plate (13) of the housing (10).

5. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The upper volute (32) is located on the side of the upper air duct near the air inlet. In the lower air outlet mode, the upper volute (32) is configured to move away from the cross-flow fan blade (20).

6. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that, The upper volute tongue (32) is configured to move toward the upper air duct wall (31) along a direction perpendicular to the tangent of the upper volute tongue (32).

7. The wall-mounted air conditioner indoor unit according to any one of claims 1 to 6, characterized in that, The wall-mounted air conditioner indoor unit further includes an upper air guide plate (50) disposed at the upper air outlet (15), the upper air guide plate (50) being rotatably connected to the housing (10) to open or close the upper air outlet (15); and / or, the wall-mounted air conditioner indoor unit further includes a lower air guide plate (60) disposed at the lower air outlet (16), the lower air guide plate (60) being rotatably connected to the housing (10) to open or close the lower air outlet (16).

8. The wall-mounted air conditioner indoor unit according to claim 7, characterized in that, The housing (10) also includes a top plate (12), the front edge of which is located behind the front panel (14), the upper air outlet (15) is formed between the front edge of the top plate (12) and the front panel (14), and the upper air guide plate (50) is rotatably connected to the top plate (12).

9. The wall-mounted air conditioner indoor unit according to claim 8, characterized in that, In the top air outlet mode, the upper air guide plate (50) rotates upward to open the upper air outlet and the upper air guide plate (50) opens to a position that is approximately coplanar with the top plate (12).

10. The wall-mounted air conditioner indoor unit according to claim 7, characterized in that, The housing (10) includes a base plate (13), the lower edge of the rear plate (11) is located above the base plate (13), the lower air outlet (16) is formed between the base plate (13) and the rear plate (11), and the lower air guide plate (60) is rotatably connected to the rear plate (11).

11. The wall-mounted air conditioner indoor unit according to claim 10, characterized in that, In the downward air outlet mode, the lower air guide plate (60) rotates downward to open the lower air outlet and the lower air guide plate (60) opens to a position that is approximately coplanar with the rear plate (11).

12. The wall-mounted air conditioner indoor unit according to any one of claims 1 to 6, characterized in that, The upper air passage wall (31) and the lower volute tongue (42) are integrally formed.

13. The wall-mounted air conditioner indoor unit according to any one of claims 1 to 6, characterized in that, The wall-mounted air conditioner indoor unit also includes a heat exchanger (70) disposed in the casing (10). The heat exchanger (70) and the cross-flow fan blades (20) are arranged sequentially between the front panel (14) and the rear panel (11). The airflow entering from the air inlet is configured to first pass through the heat exchanger (70) and then enter the cross-flow fan blades (20).

14. The wall-mounted air conditioner indoor unit according to claim 13, characterized in that, The heat exchanger (70) has a bent structure and includes a first heat exchanger section, a second heat exchanger section and a third heat exchanger section. The cross-flow fan (20) is disposed in the space enclosed by the first heat exchanger section, the second heat exchanger section and the third heat exchanger section.

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

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