Wall-mounted air conditioner indoor unit and air conditioning system

Abstract

The embodiment of the utility model provides a wall-mounted air conditioner indoor unit and an air conditioner system. The wall-mounted air conditioner indoor unit comprises a machine shell. The machine shell is provided with a first air opening in the top end, a second air opening in the front side and a third air opening in the bottom end. The wall-mounted air conditioner indoor unit has a first working state and a second working state. In the first working state, the first air opening forms an air inlet. The third air opening forms an air outlet, and airflow flows from the first air opening to the third air opening. In the second working state, the third tuyere forms an air inlet, the second tuyere forms an air outlet, and airflow flows to the second tuyere from the third tuyere. According to the wall-mounted air conditioner indoor unit, the second air opening located in the front side and the third air opening located in the bottom end are formed in the machine shell, so that different air outlets can be selected according to the use requirements of users, and then the use comfort of the users is improved.

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 an air conditioning system. Background Technology

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

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

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

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

[0006] The housing has a first air vent at the top, a second air vent at the front, and a third air vent at the bottom.

[0007] The indoor unit of the wall-mounted air conditioner has a first working state and a second working state. In the first working state, the first air vent forms an air inlet and the third air vent forms an air outlet, with airflow flowing from the first air vent to the third air vent. In the second working state, the third air vent forms an air inlet and the second air vent forms an air outlet, with airflow flowing from the third air vent to the second air vent.

[0008] In some embodiments, the indoor unit of the wall-mounted air conditioner further includes an air duct and a fan blade disposed within the casing. The fan blade is rotatably disposed within the air duct, and the rotation direction of the fan blade in the first working state is opposite to the rotation direction of the fan blade in the second working state.

[0009] In some embodiments, the first operating state includes a heating state; and the second operating state includes a cooling state.

[0010] In some embodiments, the indoor unit of the wall-mounted air conditioner further includes a baffle plate disposed at the first air vent. The baffle plate is rotatably disposed to open or close the first air vent. In a first working state, the baffle plate opens the first air vent; in a second working state, the baffle plate closes the first air vent.

[0011] In some embodiments, the wall-mounted air conditioner indoor unit further includes a rear air duct wall disposed inside the casing and a front double volute tongue wall, the gap between the air duct wall and the double volute tongue wall forming an air duct; in a first working state, a volute tongue is formed at the lower end of the double volute tongue wall; and in a second working state, a volute tongue is formed at the upper end of the double volute tongue wall.

[0012] In some embodiments, the indoor unit of the wall-mounted air conditioner further includes a connecting plate, and the upper and lower ends of the double volute tongue wall are respectively connected to the front panel of the casing through the connecting plate so that the double volute tongue wall and the front panel of the casing are sealed together.

[0013] In some embodiments, the wall-mounted air conditioner indoor unit further includes a filter screen, the first end of which is rotatably connected to the housing and connected to the front side of the third air outlet. In a first operating state, the second end of the filter screen overlaps the lower end of the double volute tongue wall; in a second operating state, the second end of the filter screen overlaps the lower end of the duct wall and covers the third air outlet.

[0014] In some embodiments, the filter is an arc-shaped filter.

[0015] In some embodiments, the wall-mounted air conditioner indoor unit also includes a filter screen rotatably connected to the housing, and in a second operating state, the filter screen covers a third air vent to filter the airflow entering from the third air vent.

[0016] In some embodiments, the indoor unit of the wall-mounted air conditioner further includes a heat exchanger disposed inside the casing and located on the upper side. The heat exchanger has a V-shaped structure and includes a first heat exchanger section and a second heat exchanger section. A first end of the second heat exchanger section is connected to the first heat exchanger section, and a second end of the second heat exchanger section extends to the lower end of the second air outlet, so that airflow passes through the second heat exchanger section and blows toward the second air outlet in the second operating state.

[0017] In some embodiments, the indoor unit of the wall-mounted air conditioner further includes an air duct and a fan blade disposed within the casing. The fan blade is rotatably disposed within the air duct, and the rotation direction of the fan blade in the first working state is opposite to the rotation direction of the fan blade in the second working state. The fan blade includes a plurality of blades spaced apart in the circumferential direction, and the thickness of the blades gradually decreases in the direction extending from the radial outer end to the radial inner end.

[0018] In some embodiments, the wall-mounted air conditioner indoor unit further includes a first air guide plate disposed at the second air outlet. In the second operating state, the first air guide plate is opened and tilted upward so that the airflow blows obliquely upward; and / or, the wall-mounted air conditioner indoor unit further includes a second air guide plate disposed at the third air outlet. In both the second and first operating states, the second air guide plate is opened and tilted forward.

[0019] A second aspect of this application provides an air conditioning system, including an outdoor unit and the aforementioned wall-mounted indoor unit.

[0020] Based on the technical solution provided in this application, the wall-mounted air conditioner indoor unit of this application embodiment includes a casing. The casing has a first air vent at the top, a second air vent at the front, and a third air vent at the bottom. The wall-mounted air conditioner indoor unit has a first operating state and a second operating state. In the first operating state, the first air vent forms an air inlet. The third air vent forms an air outlet, and airflow flows from the first air vent to the third air vent. In the second operating state, the third air vent forms an air inlet, and the second air vent forms an air outlet, and airflow flows from the third air vent to the second air vent. By providing a second air vent at the front and a third air vent at the bottom on the casing, the wall-mounted air conditioner indoor unit of this application embodiment allows users to select different air outlets according to their needs, thereby improving user comfort. Moreover, the wall-mounted air conditioner of this application embodiment can also choose to use the third air vent at the bottom as an air inlet. Compared with using the first air vent at the top as an air inlet, which may result in insufficient airflow due to its proximity to the ceiling, this increases the airflow and improves the temperature control effect.

[0021] 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

[0022] 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:

[0023] Figure 1 This is a schematic diagram of the external structure of a wall-mounted air conditioner indoor unit in the off state according to some embodiments of this application.

[0024] Figure 2 This is a schematic diagram of the internal structure of a wall-mounted air conditioner indoor unit in the off state according to some embodiments of this application.

[0025] Figure 3 This is an external schematic diagram of the indoor unit of a wall-mounted air conditioner in a cooling state according to some embodiments of this application.

[0026] Figure 4 This is a schematic diagram of the internal structure of a wall-mounted air conditioner indoor unit in a cooling state according to some embodiments of this application.

[0027] Figure 5 This is a schematic diagram of the external structure of a wall-mounted air conditioner indoor unit in heating mode according to some embodiments of this application.

[0028] Figure 6This is a schematic diagram of the internal structure of a wall-mounted air conditioner indoor unit in heating mode according to some embodiments of this application.

[0029] Figure 7 This is a schematic diagram of the fan blades of a wall-mounted air conditioner indoor unit according to some embodiments of this application.

[0030] Figure label:

[0031] 1. Filter screen; 2. Air duct; 21. Air duct wall; 22. Double volute tongue wall; 3. First air guide plate; 4. Connecting plate; 5. Sliding panel; 6. Baffle plate; 7. Heat exchanger; 71. First heat exchanger section; 72. Second heat exchanger section; 8. Fan blade; 81. Blade; 9. Second air guide plate; 10. Housing; 11. First air outlet; 12. Second air outlet; 13. Third air outlet. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] In related technologies, wall-mounted air conditioner indoor units, regardless of whether they are in heating or cooling mode, all discharge 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 potentially leading to air conditioning sickness if exposed to cold air for extended periods. To address this issue, the wall-mounted air conditioner indoor unit provided in this application has both a bottom air outlet and a front air outlet on its casing. In cooling mode, air can be discharged from the front air outlet to avoid blowing directly onto people; in heating mode, air can be discharged from the bottom air outlet to deliver hot air directly to the ground for rapid heating. Therefore, the wall-mounted air conditioner indoor unit provided in this application can achieve both upward-flowing cold air that avoids blowing on people and downward-flowing hot air that reaches the ground, ensuring a uniform and comfortable indoor temperature field during both cooling and heating modes, thus meeting user needs.

[0037] The following is for reference. Figures 1 to 7 The structure and operation of the wall-mounted air conditioner indoor unit of some embodiments of this application will be described in detail.

[0038] refer to Figure 1 and Figure 3The wall-mounted air conditioner indoor unit of some embodiments of this application includes a housing 10. The housing 10 has a first air vent 11 located at the top, a second air vent 12 located at the front, and a third air vent 13 located at the bottom. The wall-mounted air conditioner indoor unit has a first operating state and a second operating state. In the first operating state, the first air vent 11 forms an air inlet. The third air vent 13 forms an air outlet, and airflow flows from the first air vent 11 to the third air vent 13. In the second operating state, the third air vent 13 forms an air inlet, and the second air vent 12 forms an air outlet, and airflow flows from the third air vent 13 to the second air vent 12.

[0039] The wall-mounted air conditioner indoor unit of this application embodiment has a second air outlet 12 located on the front and a third air outlet 13 located at the bottom on the casing 10. This allows users to choose different air outlets according to their needs, thereby improving user comfort. Furthermore, the wall-mounted air conditioner of this application embodiment can also choose to use the third air outlet 13 located at the bottom as the air inlet. Compared to using the first air outlet 11 located at the top as the air inlet, which may result in insufficient airflow due to its proximity to the ceiling, this increases the airflow and improves the temperature control effect.

[0040] Wall-mounted air conditioner indoor units are typically installed on walls and close to the ceiling. Since the length of the indoor unit is horizontal, there is no standardized distance between its top and the ceiling. Therefore, improper installation can lead to insufficient airflow. To address this issue, this application proposes using the third air vent 13 at the bottom as the air inlet during cooling mode. This leaves the space below the indoor unit open and significantly higher than the ground, ensuring sufficient airflow and optimizing temperature control.

[0041] refer to Figure 1 In some embodiments, the casing of the wall-mounted air conditioner indoor unit has an approximately rectangular parallelepiped structure. The casing includes a top surface, a bottom surface opposite the top surface, a front side surface, a rear side surface, and left and right side surfaces. Here, the rear side refers to the side of the wall-mounted air conditioner indoor unit closest to the wall, and the front side is the side opposite to the rear side. The top surface refers to the end of the wall-mounted air conditioner indoor unit closest to the ceiling, and the bottom surface refers to the end of the wall-mounted air conditioner indoor unit furthest from the ceiling and closer to the ground. In this embodiment, the indoor unit casing has air vents at the top, bottom, and front side.

[0042] In other embodiments not shown in the accompanying drawings, the housing may also be other shapes, such as cylindrical or other shapes that approximate a cuboid. For example, in the case of a cylindrical housing, the first air vent, the second air vent, and the third air vent are all located on the arcuate side of the housing 11, with the first air vent located at the top, the second air vent located at the front, and the third air vent located at the bottom.

[0043] In some embodiments, the first operating state includes a heating state, and the second operating state includes a cooling state.

[0044] The wall-mounted air conditioner indoor unit of this application embodiment has a second air vent 12 located on the front and a third air vent 13 located at the bottom on the casing 10. This allows for selection of airflow from the second air vent 12 during cooling to avoid direct cold air blowing on the user, and selection of airflow from the third air vent 13 during heating to allow hot air to quickly reach the ground for rapid heating, thereby improving user comfort. Furthermore, the wall-mounted air conditioner of this application embodiment can also utilize the third air vent 13 at the bottom as an air inlet during cooling. Compared to using the first air vent 11 at the top, which may result in insufficient airflow due to its proximity to the ceiling, this increases the airflow during cooling, thus improving the cooling effect.

[0045] refer to Figure 3 and Figure 4 In cooling mode, the third air vent 13 forms an air inlet, and the second air vent 12 forms an air outlet. Airflow enters the duct through the third air vent 13 and exits through the second air vent 12. (Reference) Figure 5 and Figure 6 In heating mode, the first air vent 11 forms an air inlet, and the third air vent 13 forms an air outlet. It is evident that in cooling mode, the first air vent 11 is closed, and the air outlet from the heating mode becomes the air inlet. In other words, the indoor unit of the air conditioner in this embodiment of the application has three air vents in different locations, and the third air vent 13 forms an air outlet during heating and an air inlet during cooling. Figure 4 As shown, in cooling mode, the airflow direction is from the bottom into the casing and flows out diagonally upwards; as Figure 6 As shown, in heating mode, the airflow direction is from the top into the casing and flows diagonally downwards. That is to say, in this embodiment of the air conditioner, the airflow direction within the duct is different when switching between cooling and heating modes.

[0046] To facilitate the switching of airflow direction within the aforementioned air duct, in some embodiments, the wall-mounted air conditioner indoor unit further includes an air duct and a fan blade 8 disposed within the casing 10. The fan blade 8 is rotatably disposed within the air duct, and the rotation direction of the fan blade 8 in the first operating state is opposite to the rotation direction of the fan blade 8 in the second operating state. Specifically, in the heating state, the fan blade 8 is configured to rotate counterclockwise; in the heating state, the fan blade 8 is configured to rotate clockwise.

[0047] The fan blade 8 in this embodiment is a cross-flow fan blade. The fan blade 8 includes a plurality of blades 81 spaced apart in the circumferential direction. Airflow enters the interior of the fan blade 8 through the gaps between the blades 81. The axial direction of the cross-flow fan blade is consistent with the length direction of the indoor unit of the air conditioner. (See again...) Figure 6 In heating mode, the first air vent 11 is open, the second air vent 12 is closed, and the third air vent 13 is open. Airflow enters the casing 10 from the first air vent 11, passes through the heat exchanger 7 and the air duct 2 (with internal fan blades 8), and reaches the third air vent 13 before being blown out of the casing 10. Figure 6 As shown, the housing 10 contains a rear-mounted air duct wall 21 and a front-mounted double volute tongue wall 22. The portions of the air duct wall 21 and the double volute tongue wall 22 surrounding the fan blade 8 are arc-shaped. Figure 6 In the heating state shown, the lower end of the double volute tongue wall 22 forms a volute tongue. Figure 2 In the refrigeration state shown, the upper end of the double volute tongue wall 22 forms a volute tongue.

[0048] In some embodiments, the wall-mounted air conditioner indoor unit further includes a duct wall 21 disposed within the casing 10 and located on the rear side, and a double volute tongue wall 22 located on the front side. The gap between the duct wall 21 and the double volute tongue wall 22 forms an air duct. In a first operating state, the lower end of the double volute tongue wall 22 forms a volute tongue; in a second operating state, the upper end of the double volute tongue wall 22 forms a volute tongue. The wall-mounted air conditioner indoor unit of this application embodiment, by providing the double volute tongue wall 22, enables bidirectional airflow from the air duct.

[0049] To filter the airflow, in some embodiments, the wall-mounted air conditioner indoor unit also includes a filter 1. The filter 1 is rotatably connected to the housing 10, and in a second operating state, the filter 1 covers the third air vent 13 to filter the airflow entering from the third air vent 13. The term "covering" here means that the projection of the filter 1 onto the plane of the third air vent 13 is larger than the area of ​​the third air vent, so that all airflow entering the housing 10 through the third air vent 13 is filtered by the filter 1.

[0050] refer to Figure 2 , Figure 4 and Figure 6In some embodiments, the first end of the filter 1 of the wall-mounted air conditioner indoor unit is rotatably connected to the housing 10. In a first operating state, the second end of the filter 1 overlaps the lower end of the double volute tongue wall 22; in a second operating state, the second end of the filter 1 overlaps the lower end of the air duct wall 21.

[0051] exist Figure 6 In the heating state shown, the second end of filter 1 overlaps the lower end of the double volute tongue wall 22, at which point filter 1 does not perform a filtering function. Figure 4 In the cooling state shown, the second end of filter 1 overlaps the lower end of the air duct wall 21. At this time, filter 1 covers the third air outlet and plays a filtering role.

[0052] Specifically, refer to Figure 1 and Figure 4 Its first end is rotatably connected to the base plate of the housing 10, and the first end is connected to the front side of the third air outlet. Its second end moves between the air duct wall 21 and the double volute tongue wall 22. Figure 6 As shown, filter 1 is an arc-shaped filter. In heating mode, filter 1 does not perform filtering and forms part of the air duct. Therefore, setting filter 1 as an arc-shaped filter has the function of guiding airflow.

[0053] As can be seen from the above description, the air duct of the wall-mounted air conditioner indoor unit in this application embodiment can discharge air in both directions. In order to achieve bidirectional air discharge, in some embodiments, the wall-mounted air conditioner indoor unit also includes a connecting plate 4. The upper and lower ends of the double volute tongue wall 22 are respectively connected to the front panel of the housing 10 through the connecting plate 4 so that the double volute tongue wall and the front panel of the housing 10 are closed.

[0054] Connecting plate 4 is enclosed, which allows for... Figure 4 As shown, in cooling mode, the airflow enters the casing through the third air inlet and flows into the fan blades through the gap between the double volute tongue wall 22 and the air duct wall 21. This arrangement ensures that... Figure 6 In the heating state shown, filter 1 forms part of the air duct. However, since the side of filter 1 away from the air duct is closed, the heating effect is avoided from being affected by airflow bypassing through the filter.

[0055] In various embodiments of this application, the first air vent 11 is open in the first operating state to form an air inlet; the first air vent 11 is closed in the second operating state. To achieve the opening and closing of the first air vent 11, in some embodiments, reference is made to... Figure 1 , Figure 2 and Figure 6The wall-mounted air conditioner indoor unit also includes a baffle plate 6 disposed at the first air vent 11. The baffle plate 6 is rotatably disposed to open or close the first air vent 11. In a first operating state, the baffle plate 6 opens the first air vent 11. In a second operating state, the baffle plate 6 closes the first air vent 11.

[0056] In a specific embodiment, the wind deflector 6 forms a grid structure, including a plurality of wind deflector sub-plates arranged in sequence, with both ends of the wind deflector sub-plates rotatably connected to the housing 10.

[0057] In some embodiments, the wall-mounted air conditioner indoor unit further includes a first air guide plate 3 disposed at the second air outlet 12. In a second operating state, the first air guide plate 3 is opened and tilted upwards to allow airflow to blow obliquely upwards. The upward tilting refers to the fact that when the first air guide plate 3 is open, the height of the end of the first air guide plate 3 furthest from the casing 10 is higher than the height of the end of the first air guide plate 3 closest to the casing 10. This arrangement ensures that, in cooling mode, the cooling airflow blowing from the second air outlet 12 is guided obliquely upwards by the first air guide plate 3, further preventing direct airflow onto the human body.

[0058] In some embodiments, the wall-mounted air conditioner indoor unit also includes a second air guide plate 9 disposed at the third air outlet 13. In both the second and first operating states, the second air guide plate 9 is open and tilted forward. The tilting forward of the second air guide plate 9 means that the end of the second air guide plate 9 furthest from the casing 10 is closer to the front side of the casing than the end of the second air guide plate 9 closest to the casing 10. This allows the heated airflow to be blown forward along the air guide direction of the second air guide plate 9 during heating, thus reaching the interior of the room more quickly; during cooling, since there is more air at the front of the indoor unit, the forward tilt of the second air guide plate 9 allows more air to be drawn into the casing, increasing the air intake and improving the cooling effect.

[0059] In some embodiments, the wall-mounted air conditioner indoor unit further includes a heat exchanger 7. The heat exchanger 7 is disposed within the casing 10 and located on the upper side. The heat exchanger 7 has a V-shaped structure and includes a first heat exchanger section 71 and a second heat exchanger section 72. A first end of the second heat exchanger section 72 is connected to the first heat exchanger section 71, and a second end of the second heat exchanger section 72 extends to the lower end of the second air outlet 12, so that airflow passes through the second heat exchanger section 72 and blows towards the second air outlet 12 in the second operating state.

[0060] like Figure 4As shown, inside the casing of the indoor unit of the air conditioner in this embodiment, the heat exchanger 7 is located near the upper end, and the fan blades 8 are located below the heat exchanger 7. In heating mode, air enters through the first air inlet at the top and exits through the third air inlet at the bottom, so the airflow passes through the heat exchanger and the fan blades sequentially before exiting. Because the heat exchanger 7 has a V-shaped structure, and the fan blades 8 are positioned within the area formed by the V-shaped structure, the air can be heated by the heat exchanger 7 even when exiting downwards. In cooling mode, air enters through the third air inlet at the bottom and exits through the second air inlet at the front. The overall airflow direction is an upward arc. To ensure that the airflow is cooled more thoroughly when it flows out, the second heat exchanger section 72 of the heat exchanger 7 in this embodiment is made wider. Specifically, the second end of the second heat exchanger section 72 extends to the lower end of the second air inlet 12. This makes the projection of the second heat exchanger section 72 onto the plane of the second air inlet 12 larger than the area of ​​the second air inlet 12. As a result, the airflow blown out through the second air inlet 12 is cooled by the second heat exchanger section 72, thereby improving the cooling effect.

[0061] In some embodiments, such as Figure 2 As shown, within the V-shaped cross-section of heat exchanger 7, the size of the second heat exchanger section 72 is larger than the size of the first heat exchanger section 71.

[0062] like Figure 7 As shown, in some embodiments, the wall-mounted air conditioner indoor unit also includes an air duct and a fan blade 8 disposed within the casing 10. The fan blade 8 is rotatably disposed within the air duct. Furthermore, the rotation direction of the fan blade 8 in the first operating state is opposite to the rotation direction of the fan blade 8 in the second operating state. The fan blade 8 includes a plurality of blades 81 spaced apart in the circumferential direction. The thickness of the blades 81 gradually decreases in the direction extending from the radially outer end to the radially inner end. Here, thickness refers to... Figure 7 As shown in the cross-section of blade 81, the dimensions of blade 81 in the direction perpendicular to the radial direction gradually decrease. That is, the closer to the axis, the thinner blade 81 becomes, so that both sides of the blade form a parabolic shape. This allows airflow to enter the interior of blade 8 through the parabolic shape regardless of whether the blade rotates clockwise or counterclockwise, thus facilitating bidirectional operation of the blade.

[0063] In some embodiments, the blade 81 has a symmetrical structure with its two sides arranged symmetrically. Moreover, both sides are curved surfaces.

[0064] The following is based on Figures 1 to 7 The structure and working process of a wall-mounted air conditioner indoor unit according to a specific embodiment of this application will be described in detail.

[0065] like Figures 1 to 6As shown, the wall-mounted air conditioner indoor unit of this embodiment includes a casing 10, a baffle plate 6, a filter 1, an air duct 2, an air duct wall 21, a double volute tongue wall 22, a first air guide plate 3, a connecting plate 4, a sliding panel 5, a baffle plate 6, a heat exchanger 7, a first heat exchanger section 71, a second heat exchanger section 72, a fan blade 8, and a second air guide plate 9.

[0066] The housing 10 is provided with a first air vent 11, a second air vent 12, and a third air vent 13. The housing 10 is a cuboid, with the first air vent 11 at the top and a baffle plate 6 with a grille structure at the first air vent 11. The baffle plate 6 is movably configured to open or close the first air vent 11. A sliding panel 5 and a second air vent 12 are provided in the center of the front of the housing 10. The sliding panel 5 can slide upward to open and expose the second air vent 12, and can slide downward to close the second air vent 12. A first air guide plate 3 is also provided at the second air vent 12. The third air vent 13 is provided at the bottom of the housing 10. The housing 10 contains an air duct 2, a filter 1, and a fan blade 8. The filter 1 is rotated and overlapped inside the double volute air duct, forming different overlap patterns to achieve a filtering effect.

[0067] like Figure 1 and Figure 2 As shown, in the shutdown mode, the first air vent 11, the second air vent 12, and the third air vent 13 are all closed. The filter 1 is attached to the lower end of the double volute tongue wall 22. The internal parts are not exposed, resulting in a neat and aesthetically pleasing overall appearance.

[0068] like Figure 3 and Figure 4 As shown, when the user turns on the cooling mode, the first air vent 11 closes, the sliding panel 5 slides upward to the designated position to expose the second air vent 12, and the first air guide plate 3 rotates open; the third air vent 13 remains open, and air enters from the third air vent 13. The filter 1 inside the air duct 2 rotates downward, overlapping the lower end of the air duct wall 21 and near the edge of the third air vent, filtering the incoming air. The synchronous fan turns on and drives the fan blade 8 to rotate clockwise. At this point, the airflow enters the unit from the third air vent 13, and after heat exchange in the heat exchanger 7 (which is now the evaporator), it is cooled to produce a low-temperature airflow, which flows out from the second air vent 12 through the air duct 2. At the same time, the rotation angle of the first air guide plate 3 is controlled to ensure that the cold air flows upward and avoids the human body.

[0069] like Figure 5 and Figure 6 As shown, when the user turns on the heating mode, the first air vent 11 opens, the sliding panel 5 and filter 1 remain stationary, the third air vent 13 opens, the fan turns on simultaneously, and drives the fan blades to rotate counterclockwise. The airflow enters the unit from the first air vent 11, and after heat exchange in the heat exchanger 7 (which is the condenser at this time), a high-temperature airflow is generated. It flows out from the third air vent 13 through the air duct 2. At the same time, the rotation angle of the second air guide plate 9 is controlled to ensure that the hot air flows downwards and directly to the ground.

[0070] like Figure 7 As shown, the blades 81 of the fan blade 8 in this embodiment have a structure where the blade thickness is thinner the closer it is to the axis, and the structure is symmetrically distributed. Therefore, it can rotate clockwise to deliver air or rotate counterclockwise to deliver air.

[0071] 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) has a first air vent (11) at the top, a second air vent (12) at the front, and a third air vent (13) at the bottom. The wall-mounted air conditioner indoor unit has a first working state and a second working state. In the first working state, the first air vent (11) forms an air inlet and the third air vent (13) forms an air outlet, and the airflow flows from the first air vent (11) to the third air vent (13). In the second working state, the third air vent (13) forms an air inlet and the second air vent (12) forms an air outlet, and the airflow flows from the third air vent (13) to the second air vent (12).

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The wall-mounted air conditioner indoor unit also includes an air duct and a fan blade (8) disposed in the casing (10). The fan blade (8) is rotatably disposed in the air duct. The rotation direction of the fan blade (8) in the first working state is opposite to the rotation direction of the fan blade (8) in the second working state.

3. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The first operating state includes a heating state; and the second operating state includes a cooling state.

4. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The wall-mounted air conditioner indoor unit also includes a baffle plate (6) disposed at the first air vent (11). The baffle plate (6) is rotatably disposed to open or close the first air vent (11). In the first working state, the baffle plate (6) opens the first air vent (11); in the second working state, the baffle plate (6) closes the first air vent (11).

5. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The wall-mounted air conditioner indoor unit also includes an air duct wall (21) disposed inside the casing (10) and located on the rear side, and a double volute tongue wall (22) located on the front side. The gap between the air duct wall (21) and the double volute tongue wall (22) forms an air duct. In the first working state, the lower end of the double volute tongue wall (22) forms a volute tongue; in the second working state, the upper end of the double volute tongue wall (22) forms a volute tongue.

6. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that, The wall-mounted air conditioner indoor unit also includes a connecting plate (4). The upper and lower ends of the double volute tongue wall (22) are respectively connected to the front panel of the housing (10) through the connecting plate (4) so ​​that the double volute tongue wall (22) and the front panel of the housing (10) are closed together.

7. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that, The wall-mounted air conditioner indoor unit also includes a filter (1), the first end of which is rotatably connected to the housing (10) and the first end of which is connected to the front side of the third air outlet (13). In the first working state, the second end of the filter (1) overlaps the lower end of the double volute tongue wall (22); in the second working state, the second end of the filter (1) overlaps the lower end of the air duct wall (21) and covers the third air outlet (13).

8. The wall-mounted air conditioner indoor unit according to claim 7, characterized in that, The filter (1) is an arc-shaped filter.

9. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The wall-mounted air conditioner indoor unit also includes a filter (1), which is rotatably connected to the housing, and in the second working state, the filter (1) covers the third air vent (13) to filter the airflow entering from the third air vent (13).

10. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The wall-mounted air conditioner indoor unit also includes a heat exchanger (7), which is disposed inside the casing (10) and located on the upper side. The heat exchanger (7) has a V-shaped structure and includes a first heat exchanger section (71) and a second heat exchanger section (72). The first end of the second heat exchanger section (72) is connected to the first heat exchanger section (71), and the second end of the second heat exchanger section (72) extends to the lower end of the second air outlet (12) so that in the second working state, the airflow passes through the second heat exchanger section (72) and blows towards the second air outlet (12).

11. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The wall-mounted air conditioner indoor unit also includes an air duct and a fan blade (8) disposed in the casing (10). The fan blade (8) is rotatably disposed in the air duct, and the rotation direction of the fan blade (8) in the first working state is opposite to the rotation direction of the fan blade (8) in the second working state. The fan blade (8) includes a plurality of blades spaced apart in the circumferential direction, and the thickness of the blades gradually decreases in the direction extending from the radial outer end to the radial inner end.

12. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The wall-mounted air conditioner indoor unit also includes a first air guide plate (3) disposed at the second air outlet (12). In the second working state, the first air guide plate (3) is opened and tilted upward so that the airflow blows obliquely upward; and / or, the wall-mounted air conditioner indoor unit also includes a second air guide plate (9) disposed at the third air outlet (13). In both the second working state and the first working state, the second air guide plate (9) is opened and tilted forward.

13. 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 12.

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