Wall-mounted air conditioner indoor unit

Abstract

The present invention provides a wall-mounted air conditioner indoor unit, comprising a housing having a main air outlet for supplying air into the room and an air duct for supplying air to the main air outlet; a first fan disposed at the inlet of the air duct; and a second fan disposed within the air duct and downstream of the first fan. The operation of the first and second fans is independently controlled, allowing them to be activated simultaneously or selectively to promote airflow within the air duct. The present invention enhances the adjustability of the air volume of the wall-mounted air conditioner indoor unit.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, in particular to a wall-mounted air-conditioning indoor unit. Background Art

[0002] Direct exposure of cold or hot air from an air conditioner to the human body can cause discomfort and a poor user experience. Frequent exposure to cold air can also lead to air conditioning sickness.

[0003] Some existing wall-mounted air conditioner indoor units are equipped with multiple air outlets to increase the air outlet angle, deliver air to a wider range, and make the air supply angle more controllable. However, the increased number of air outlets complicates the air outlet structure, often leading to insufficient air volume and insufficient air delivery distance from some outlets. Summary of the Invention

[0004] The object of the present invention is to provide a wall-mounted air conditioner indoor unit that overcomes the above-mentioned problems or at least partially solves the above-mentioned problems, so that the air volume of the wall-mounted air conditioner indoor unit is more adjustable.

[0005] The purpose of the present invention is to ensure the air volume and air outlet distance of each air outlet.

[0006] A further object of the present invention is to expand the air supply angle of the wall-mounted air conditioner indoor unit.

[0007] In particular, the present invention provides a wall-mounted air conditioner indoor unit, comprising:

[0008] a housing having a main air outlet for supplying air into the room and an air duct for supplying air flow to the main air outlet;

[0009] A first fan is provided at the inlet end of the air duct; and

[0010] a second fan, disposed inside the air duct and downstream of the first fan;

[0011] The operation of the first fan and the second fan is independently controlled so as to be started simultaneously or selectively to promote airflow in the air duct.

[0012] Optionally, the housing further has a bypass air outlet, which passes through the air duct and the bottom wall of the housing for supplying air downwards;

[0013] The first fan is located upstream of the bypass air outlet for supplying air to the bypass air outlet and the second fan;

[0014] The second fan is located downstream of the bypass air outlet to supply air to the main air outlet.

[0015] Optionally, a bypass air guide plate is provided at the bypass air outlet.

[0016] Optionally, the main air outlet opens toward the front and downwards for discharging air toward the front and downwards.

[0017] Optionally, the downstream section of the air duct is a gradually expanding section, and the second fan is located at the inlet of the gradually expanding section.

[0018] Optionally, the air duct is defined by a front air duct wall, a rear air duct wall located behind the front air duct wall, and a lower air duct wall located below the front air duct wall;

[0019] The rear air duct wall and the front air duct wall together define an upstream section of the air duct;

[0020] The lower air duct wall and the front air duct wall together define a downstream section of the air duct;

[0021] The bypass air outlet is formed between the rear air duct wall and the lower air duct wall;

[0022] The outlet ends of the front air duct wall and the lower air duct wall respectively constitute the upper end and the lower end of the main air outlet.

[0023] Optionally, the rear air duct wall is generally convex and curved;

[0024] The downwind duct wall as a whole extends gradually downward from the back to the front;

[0025] The front air duct wall includes a volute tongue section, a connecting section, and an upward section, wherein the volute tongue section extends from the front upper portion to the rear lower portion, the connecting section extends from the rear end of the volute tongue section to the front lower portion, and the upward section extends obliquely from the front end of the connecting section to the front upper portion; and

[0026] The second fan is located between the connecting section and the lower air duct wall.

[0027] Optionally, the rear end of the lower air duct wall is located at a higher position than the front end of the rear air duct wall.

[0028] Optionally, the wall-mounted air conditioner indoor unit further includes:

[0029] A first air guide plate and an air outlet grille are arranged in a vertical direction in front of the main air outlet; and

[0030] The second air guide plate is arranged at the lower side of the main air outlet.

[0031] Optionally, the grille holes of the air outlet grille are arranged in the up-down direction, and each of the grille holes is in the shape of a long strip with the length direction parallel to the transverse direction, and the widths of the grille holes are not exactly the same.

[0032] In the wall-mounted indoor air conditioner of the present invention, a first fan and a second fan are installed in the air duct. The first fan and the second fan are connected in series in the air duct. The air conditioner can control the number of fans that are activated, adjust the total air volume of the two fans, or adjust the air volume ratio of the two fans. This increases the adjustable range of the air volume and enhances the adjustability.

[0033] Furthermore, in the wall-mounted air conditioner indoor unit of the present invention, the housing is provided with not only a main air outlet but also a bypass air outlet, thereby expanding the air supply range of the wall-mounted air conditioner indoor unit. The bypass air outlet is specifically designed to supply air directly downward, meeting the requirement of direct downward airflow in heating mode. Furthermore, the bypass air outlet is located between the first and second fans. The first fan is used to supply air to the bypass air outlet and the second fan, while the second fan is specifically designed to supply air to the main air outlet. This ensures that both air outlets receive sufficient airflow, ensuring a guaranteed air volume and making the air volume more adjustable.

[0034] Furthermore, in the wall-mounted air conditioner indoor unit of the present invention, the air duct is defined by the front duct wall, the rear duct wall, and the lower duct wall, thereby simply dividing the air duct into an upstream section for accommodating two fans and a downstream section, and also defining a bypass air outlet. Furthermore, it is more convenient to configure the downstream section of the air duct as a gradually expanding section to ensure a pressurized effect on the airflow downstream of the duct.

[0035] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a structural diagram of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention;

[0037] Figure 2 yes Figure 1 Schematic diagram of the wall-mounted air conditioner indoor unit in the forward blowing mode;

[0038] Figure 3 yes Figure 1 Schematic diagram of the wall-mounted air conditioner indoor unit in down-blowing mode;

[0039] Figure 4 yes Figure 1 Schematic diagram of the wall-mounted air conditioner indoor unit operating in maximum air supply mode. DETAILED DESCRIPTION

[0040] Refer to the following Figures 1 to 4The following describes a wall-mounted air conditioner indoor unit according to an embodiment of the present invention. Terms such as "front," "rear," "up," "down," "top," "bottom," "inside," "outside," and "lateral" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate and simplify the description of the present invention and do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Arrows in the drawings illustrate the direction of airflow.

[0041] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the definition of "first", "second", etc. can explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or more of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0042] An embodiment of the present invention provides a wall-mounted air conditioner indoor unit. The wall-mounted air conditioner indoor unit is the indoor part of a split wall-mounted room air conditioner and is used to regulate indoor air, such as cooling / heating, dehumidifying, introducing fresh air, etc.

[0043] Figure 1 is a structural diagram of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention; Figure 2 yes Figure 1 Schematic diagram of the wall-mounted air conditioner indoor unit in the forward blowing mode; Figure 3 yes Figure 1 Schematic diagram of the wall-mounted air conditioner indoor unit in down-blowing mode.

[0044] like Figures 1 to 3 As shown, the wall-mounted air conditioner indoor unit according to the embodiment of the present invention may generally include a casing 10 , a first fan 41 and a second fan 42 .

[0045] The housing 10 has a main air outlet 12 for supplying air into the room. Furthermore, the housing 10 has an air duct 50 for supplying air to the main air outlet 12. Specifically, the exterior panel that forms the exterior of the wall-mounted indoor air conditioner, the frame that forms the main body of the wall-mounted indoor air conditioner, and the air duct walls that define the air duct 50 all constitute the housing 10 described herein.

[0046] The casing 10 defines a storage space for accommodating various components of the wall-mounted air-conditioning indoor unit. The main air outlet 12 is used to discharge the airflow in the casing 10 to the indoor environment to regulate the indoor air. The discharged airflow refers to the airflow that is accelerated by the fan in the casing 10 to flow through the air outlet and is used to regulate the indoor environment, such as cold air in cooling mode, hot air in heating mode, and fresh air in fresh air mode, etc. The casing 10 can be in the shape of a long strip extending in the transverse direction, and the main air outlet 12 can be in the shape of a long strip with a length direction parallel to the length direction of the casing 10. The main air outlet 12 can be a single air outlet, or it can include a plurality of independent sub-air outlets.

[0047] A first fan 41 is disposed at the inlet of the air duct 50 and is used to draw air from the housing 10 into the air duct 50. A second fan 42 is disposed within the air duct 50 and downstream of the first fan 41. The operation of the first fan 41 and the second fan 42 is independently controlled, allowing them to be activated simultaneously or selectively to promote airflow within the air duct 50. In other words, either one or both of the two fans (the first fan 41 and the second fan 42) can be operated, and the speed of each fan can be independently adjusted.

[0048] In an optional embodiment, the wall-mounted air conditioner indoor unit is the indoor part of a split wall-mounted room air conditioner that utilizes a vapor compression refrigeration cycle system for cooling / heating. Figure 1 As shown, a heat exchanger 60 is installed inside the housing 10. The heat exchanger 60 and the throttling device are connected to the compressor, condenser, and other refrigeration components installed in the air conditioner outdoor unit via pipelines, forming a vapor compression refrigeration cycle system. Under the action of the first fan 41 and / or the second fan 42, indoor air enters the interior of the housing 10 through the air inlet 11 at the top of the housing 10. After completing forced convection heat exchange with the heat exchanger 60, heat exchange air is formed and then blown toward the air outlet under the guidance of the air duct 50. The first fan 41 and the second fan 42 are preferably cross-flow fans with axes parallel to the longitudinal direction of the housing 10.

[0049] In the wall-mounted indoor air conditioner of the embodiment of the present invention, the first and second fans 41, 42 are arranged in series within the air duct 50. When both fans are turned on, the wind force is superimposed, resulting in a greater air volume and a longer air delivery distance. Furthermore, the wall-mounted indoor air conditioner can control the number of fans turned on, adjust the total air volume of the two fans, or adjust the air volume ratio of the two fans, thereby expanding the adjustable range of the air volume and enhancing adjustability.

[0050] In some embodiments, as Figures 1 to 3As shown, the casing 10 also has a bypass air outlet 13, which passes through the air duct 50 and the bottom wall 101 of the casing 10 for supplying air downward. Because the bypass air outlet 13 is opened, part of the air flow in the air duct 50 will not flow to the main air outlet 12, but will flow out "in advance" through the bypass air outlet 13. Since the bypass air outlet 13 passes through the bottom wall 101 of the casing 10 and supplies air downward, it can blow directly downward to the bottom surface, thereby improving the cooling / heating effect of the indoor bottom space. Especially in the heating mode, the hot air density is relatively small and it is easy to float up, resulting in poor heating effect of the bottom space and people feeling cold. The present invention allows the hot air to blow directly downward to the ground in a nearly vertical direction, achieving a warm foot experience.

[0051] The first fan 41 is located upstream of the bypass air outlet 13 to supply air to the bypass air outlet 13 and the second fan 42. The second fan 42 is located downstream of the bypass air outlet 13 to supply air to the main air outlet 12. This wind distribution scheme is very reasonable and clever. When both fans are turned on, the bypass air outlet 13 is only used for downward blowing, and its activation time and air volume requirements are not as good as those of the main air outlet 12. Therefore, the air flow from the bypass air outlet 13 is only pressurized by the first fan 41. The air flow from the main air outlet 12, which is the main air outlet channel for air conditioning, is pressurized in sequence by the first fan 41 and the second fan 42, among which the second fan 42 is specifically used to pressurize the main air outlet 12. Since the first fan 41 has a larger load, the rated air volume of the first fan 41 can be greater than that of the second fan 42.

[0052] Furthermore, a bypass air guide plate 23 is provided at the bypass air outlet 13. The bypass air guide plate 23 is used to open and close the bypass air outlet 13 and / or guide the air outlet angle of the bypass air outlet 13. Specifically, Figures 1 to 3 As shown, one end of the bypass air guide plate 23 can be rotatably mounted on an inner wall of one side of the bypass air outlet 13, with the rotation axis being x3. Of course, a motor can be provided to drive the bypass air guide plate 23 to rotate.

[0053] In the wall-mounted air conditioner indoor unit of the embodiment of the present invention, the housing 10 is provided with not only a main air outlet 12, but also a bypass air outlet 13, which makes the air supply range of the wall-mounted air conditioner indoor unit larger. The bypass air outlet 13 is specifically used to supply air directly downward, meeting the requirement of direct downward air blowing in the heating mode. In addition, the bypass air outlet 13 is located between the first fan 41 and the second fan 42. The first fan 41 is used to supply air to the bypass air outlet 13 and the second fan 42, and the second fan 42 is specifically used to supply air to the main air outlet 12. This ensures that both air outlets can obtain sufficient airflow supply, the air volume can be guaranteed, and the air volume is more adjustable.

[0054] In some embodiments, as Figures 1 to 3As shown, the main air outlet 12 can be opened toward the front and bottom for discharging air toward the front and downward. Air supply toward the front, the front top and the front bottom all belong to air supply toward the front.

[0055] Specifically, if Figures 1 to 3 As shown, the wall-mounted air-conditioning indoor unit further includes a first air guide plate 21, an air outlet grille 150, and a second air guide plate 22. The first air guide plate 21 and the air outlet grille 150 are arranged in the up-down direction in front of the main air outlet 12. The first air guide plate 21 corresponds to the upper front area of ​​the main air outlet 12, and is used to block / open the upper front section of the main air outlet 12 and / or guide its air outlet direction. Specifically, the lower end of the first air guide plate 21 can be rotatably mounted on the air outlet grille 150 around the rotation axis x1. In this way, the first air guide plate 21 can be rotated to a state of extending obliquely from the back to the front, as shown in FIG. Figure 2 The airflow out of the air outlet grille 150 is very fine and has a breeze effect, making the airflow more comfortable.

[0056] The air outlet grille 150 comprises a plurality of grille holes 151 arranged vertically. Each grille hole 151 is strip-shaped, with its length parallel to the transverse direction. The widths of the grille holes 151 vary. In other words, the present embodiment only excludes the possibility of all grille holes 151 having the same width. In this embodiment, the varying widths of the grille holes 151 create an unevenly spaced grille structure. As air flows out at high speed through the grille holes 151, this uneven spacing allows for more thorough vertical stratification of the airflow, extending the airflow distance and providing a better airflow angle. This helps cool air rise, enhancing user comfort. This addresses the limited airflow distance associated with conventional front-outlet grille structures. In some preferred embodiments, the widths of the grille holes 151 can vary to further enhance airflow stratification. In some embodiments, each grille hole 151 can be angled upward from rear to front, directing the airflow forward and upward in forward-blowing mode. This results in a greater upward angle, a longer airflow distance, and more uniform airflow distribution.

[0057] The second air guide plate 22 is provided at the lower side of the main air outlet 12 to block / open the lower side of the main air outlet 12 and / or guide the air outlet direction. Figures 1 to 3 In the embodiment, one end of the second air guide plate 22 can be rotatably mounted on the bottom end of the air outlet grille 150, with the rotation axis being x2. After the second air guide plate 22 is opened, the air flow is blown downward.

[0058] Figure 4 yes Figure 1 Schematic diagram of the wall-mounted air conditioner indoor unit operating in maximum air supply mode.

[0059] The wall-mounted air conditioner indoor unit of the embodiment of the present invention has multiple air supply modes, which improves the user experience. Figure 2 As shown, the first air guide plate 21 can be opened, and the second air guide plate 22 and the bypass air guide plate 23 can be closed, so that the air flow is guided by the first air guide plate 21 and the air outlet grille 150 and blown forward, forming a forward blowing mode. Figure 3 As shown, the first air guide plate 21 is closed, and the second air guide plate 22 and the bypass air guide plate 23 are opened, so that most of the air flow is blown downward, and a small part of the air flow is blown out from the air outlet grille 150, forming a downward blowing mode. When the air conditioner is in cooling mode, the forward blowing mode can be operated to blow the cold air at a larger upward angle (the angle between the air flow blowing angle and the horizontal plane) to avoid the human body. After reaching the highest point, the cold air scatters downward, achieving a "shower-like" cooling experience. When the air conditioner is in heating mode, the downward blowing mode can be selected to allow more hot air to blow directly downward to the bottom surface in a nearly vertical direction, achieving a warm foot experience.

[0060] In addition, if Figure 4 As shown, the first air guide plate 21, the second air guide plate 22 and the bypass air guide plate 23 can also be opened to form a maximum air supply mode, so that the air flow can flow out more smoothly and in a large amount to speed up the cooling / heating speed and increase the cooling / heating capacity.

[0061] Of course, it should be understood that selecting the forward blowing mode for air conditioning cooling and the downward blowing mode for heating is only a recommended operating mode of the present invention. Of course, the downward blowing mode can also be selected for air conditioning cooling, and the forward blowing mode can also be selected for heating. The present invention does not impose any restrictions on the combination of air conditioning operating mode and air supply mode.

[0062] The wall-mounted air-conditioning indoor unit of the present invention can adjust the air supply distance by controlling the speed ratio of the two fans, so that the wind speed within the range of human activity is more uniform. Specifically, when the wall-mounted air-conditioning indoor unit operates in the maximum cooling air supply mode, the position of the human body is sensed by a sensor (such as an infrared sensor), and the speed ratio of the two fans is controlled according to the position of the human body. When the distance between the human body and the wall-mounted air-conditioning indoor unit is less than the preset distance, the speed of the first fan 41 is made N1 times the speed of the second fan 42, for example, N1=1. At this time, the wind speed of the forward airflow is larger, and the upward force is greater. After hitting the ceiling, it slows down and falls to the human comfort zone. The downstream air volume is smaller, which reduces the original airflow circulation below the wall-mounted air-conditioning indoor unit and reduces the temperature difference effect.

[0063] When the distance between the human body and the wall-mounted air conditioner indoor unit is greater than or equal to a preset distance, the speed of the first fan 41 is set to N2 times the speed of the second fan 42, where N2 > N1. For example, N2 = 2.4. This reduces the forward airflow and decreases the upward angle, achieving ceiling-attached flow and increasing the delivery distance. The increased downward air volume propels the airflow upward and back to the housing, reducing the temperature difference in the room.

[0064] like Figures 1 to 3As shown, in the airflow direction, the air duct 50 comprises an upstream section 51 and a downstream section 52. The downstream section 52 of the air duct 50 is a gradually diverging section, with the second fan 42 located at the inlet of the gradually diverging section. That is, in the airflow direction, the flow cross-section of the downstream section 52 of the air duct 50 gradually increases, forming a gradually diverging section, which is known as a bell-mouth design. This gradually diverging design facilitates the nozzle effect, increases dynamic pressure and airflow distance, and reduces wind loss during the flow process.

[0065] like Figure 1 As shown, the air duct 50 can be defined by a front duct wall 200 (EJ segment), a rear duct wall 100 located behind the front duct wall 200 (AB segment), and a lower duct wall 300 located below the front duct wall 200 (CD segment). Each wall of the air duct 50 is part of the housing 10. The rear duct wall 100 and the front duct wall 200 together define the upstream section of the air duct 50. The lower duct wall 300 and the front duct wall 200 together define the downstream section 52 of the air duct 50. A bypass air outlet 13 is formed between the rear duct wall 100 and the lower duct wall 300. The outlet end J of the front duct wall 200 and the outlet end D of the lower duct wall 300 respectively constitute the upper and lower ends of the main air outlet 12.

[0066] In the wall-mounted air conditioner indoor unit of the embodiment of the present invention, the air duct 50 is defined by the front duct wall 200, the rear duct wall 100, and the lower duct wall 300. This simple structure divides the air duct 50 into an upstream section 51 and a downstream section 52 for accommodating two fans, and also defines a bypass air outlet 13. Furthermore, it is more convenient to configure the downstream section 52 of the air duct 50 as a gradually expanding section to ensure a pressurized effect on the airflow downstream of the air duct 50.

[0067] Specifically, the rear duct wall 100 is generally convex and curved. The lower duct wall 300 generally extends downward and gradually from the rear to the front. The front duct wall 200 includes a volute tongue segment EF, a connecting segment FG, and an upward segment GJ. The volute tongue segment EF extends from the front upper portion toward the rear lower portion, the connecting segment FG extends from the rear end F of the volute tongue segment EF toward the front lower portion, and the upward segment GJ extends from the front end G of the connecting segment FG toward the front upper portion. The second fan 42 is located between the connecting segment FG and the lower duct wall 300. Rounded corners can be used for transitions between adjacent sections to reduce the resistance loss of the airflow and make the airflow turn more smoothly, which is conducive to enhancing the wall attachment effect of the airflow.

[0068] like Figure 1 As shown, the rear end C of the downwind duct wall 300 can be positioned higher than the front end B of the rear duct wall 100, thereby facilitating the formation of a gradually expanding section in the downstream section 52 of the duct 50. Furthermore, the portion where the rear end C of the downwind duct wall 300 is higher than the front end B of the rear duct wall 100 directs some airflow toward the bypass outlet 13, thereby preventing airflow from being difficult to enter the bypass outlet 13.

[0069] At this point, those skilled in the art will recognize that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A wall-mounted air conditioner indoor unit, characterized in that include: a housing having a main air outlet for supplying air into the room and an air duct for supplying air flow to the main air outlet; a first fan, arranged at the inlet end of the air duct; and a second fan, disposed inside the air duct and downstream of the first fan; The operation of the first fan and the second fan is independently controlled so as to be started simultaneously or selectively to promote airflow in the air duct; The housing further has a bypass air outlet, which passes through the air duct and the bottom wall of the housing for supplying air downwards; The first fan is located upstream of the bypass air outlet for supplying air to the bypass air outlet and the second fan; A bypass air guide plate is provided at the bypass air outlet; The second fan is located downstream of the bypass air outlet to supply air to the main air outlet; The wall-mounted air conditioner indoor unit also includes: A first air guide plate and an air outlet grille are arranged in a vertical direction in front of the main air outlet; as well as a second air guide plate, arranged at the lower side of the main air outlet; The grille holes of the air outlet grille are arranged in the up-down direction, and each of the grille holes is in the shape of a long strip with the length direction parallel to the transverse direction, and the widths of the grille holes are not completely the same.

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that: The main air outlet is opened toward the front and downward for discharging air toward the front and downward.

3. The wall-mounted air conditioner indoor unit according to claim 2, characterized in that: The downstream section of the air duct is a gradually expanding section, and the second fan is located at the inlet of the gradually expanding section.

4. The wall-mounted air conditioner indoor unit according to claim 3, characterized in that: The air duct is defined by a front air duct wall, a rear air duct wall located behind the front air duct wall, and a lower air duct wall located below the front air duct wall; The rear air duct wall and the front air duct wall together define an upstream section of the air duct; The lower air duct wall and the front air duct wall together define a downstream section of the air duct; The bypass air outlet is formed between the rear air duct wall and the lower air duct wall; The outlet ends of the front air duct wall and the lower air duct wall respectively constitute the upper end and the lower end of the main air outlet.

5. The wall-mounted air conditioner indoor unit according to claim 4, characterized in that: The rear air duct wall is generally in a convex curved shape; The downwind duct wall as a whole extends gradually downward from the back to the front; The front air duct wall includes a volute tongue section, a connecting section, and an upward section, wherein the volute tongue section extends from the front upper portion to the rear lower portion, the connecting section extends from the rear end of the volute tongue section to the front lower portion, and the upward section extends obliquely from the front end of the connecting section to the front upper portion; and The second fan is located between the connecting section and the lower air duct wall.

6. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that: The rear end of the lower air duct wall is located at a higher position than the front end of the rear air duct wall.

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