Wall-mounted air conditioner indoor unit and air conditioner

Abstract

The utility model provides a kind of wall-mounted air conditioner indoor unit and air conditioner, it is related to air conditioner technical field to solve the problem of uneven air outlet of lower air outlet. Wall-mounted air conditioner indoor unit includes base and fan assembly, fan assembly is installed in the base with the vertical mode of axis, the lower part of base forms flow guide chamber, flow guide chamber includes fan air outlet, the lower of fan air outlet is equipped with lower air outlet, flow guide chamber is equipped with air duct switching plate, air duct switching plate is configured to be able to move to first position of the air duct switching plate that is communicated fan air outlet and lower air outlet, the first surface of air duct switching plate is equipped with first flow guide rib plate, first surface is the surface of air duct switching plate towards lower air outlet;In the length direction of wall-mounted air conditioner indoor unit, along the direction of airflow being guided by first flow guide rib plate, first flow guide rib plate gradually moves away from the axis of fan assembly in at least part length range. It can improve the air outlet uniformity of lower air outlet.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, and more specifically, to a wall-mounted air conditioner indoor unit and an air conditioner. Background Technology

[0002] The air outlet of a current wall-mounted air conditioner indoor unit typically exits from the junction of the front and lower surfaces of the unit to accommodate both downward and forward airflow. However, placing the air outlet at this junction results in a small airflow area. Especially in zero-wind-feel mode, the small outlet size further restricts the cooling capacity output and significantly increases the time it takes for the air conditioner to reach the user's desired temperature.

[0003] Therefore, some air conditioners use a bottom air outlet on the lower surface of the wall-mounted indoor unit to make full use of the lower surface area and increase the overall air outlet area. However, if the air outlet is concentrated along the length of the wall-mounted indoor unit, it will cause uneven airflow from the bottom air outlet, failing to fully utilize the advantage of the larger bottom air outlet area. Utility Model Content

[0004] The first objective of this utility model is to provide a wall-mounted air conditioner indoor unit to solve the technical problem of uneven airflow from the existing lower air outlet.

[0005] The first aspect of this utility model provides a wall-mounted air conditioner indoor unit, including a base and a fan assembly. The fan assembly is mounted on the base in a vertical manner with its axis perpendicular to the ground. A guide cavity is formed at the lower part of the base. The guide cavity includes a fan outlet duct. A lower air outlet is provided below the fan outlet duct. The guide cavity is provided with a duct switching plate. The duct switching plate is configured to move to a first position that connects the fan outlet duct and the lower air outlet. A first guide rib is provided on the first surface of the duct switching plate. The first surface is the surface of the duct switching plate facing the lower air outlet. In the length direction of the wall-mounted air conditioner indoor unit, along the direction in which the airflow is guided by the first guide rib, the first guide rib gradually moves away from the axis of the fan assembly within at least a portion of its length.

[0006] The beneficial effects of this wall-mounted air conditioner indoor unit are:

[0007] Because the fan assembly is mounted vertically on the base, its outlet cannot cover most of the length of the wall-mounted air conditioner's indoor unit. This results in the highest air velocity in the area directly opposite the fan assembly's outlet along the length of the indoor unit, decreasing with distance. By installing a first guide rib on the first surface of the duct switching plate, the airflow is guided away from the fan assembly's axis over at least a portion of its length. This allows the airflow to diffuse along the length of the indoor unit, increasing the air volume and velocity in the area farther from the fan assembly at the lower outlet. This makes the airflow more uniform, fully utilizing the larger area of ​​the lower outlet to increase the air volume of the air conditioner.

[0008] In an optional technical solution, the first guide rib includes a first sub-inclined portion, and along the flow direction in which the airflow is guided by the first sub-inclined portion, the angle between the first sub-inclined portion and the length direction of the wall-mounted air conditioner indoor unit gradually decreases.

[0009] This configuration allows the airflow to gradually flow along the length of the air conditioner when the first sub-inclined section guides the airflow, thereby reducing abrupt changes in airflow direction and minimizing energy loss during airflow reversal.

[0010] In an optional technical solution, the first guide rib further includes a second sub-inclined portion; along the direction in which the airflow is guided by the first guide rib, the first sub-inclined portion and the second sub-inclined portion are arranged in sequence, and the angle between the second sub-inclined portion and the length direction of the wall-mounted air conditioner indoor unit gradually increases.

[0011] This design allows for proper convergence of the airflow direction after diffusion through the first inclined section, thus preventing interference between the air outlets of multiple fan components. Simultaneously, it facilitates the conversion of the oblique velocity into a velocity perpendicular to the length of the wall-mounted air conditioner's indoor unit. After completing the airflow diffusion task, this allows the outlet airflow to blow further downwards, increasing the range of influence of the air outlet.

[0012] In an optional technical solution, the air guide cavity includes a front air outlet duct, which is located in front of the fan outlet duct. The front air outlet duct has a front air outlet and a front air duct inlet. The air duct switching plate is configured to move to a second position that connects the front air outlet duct and the fan outlet duct. The lower air duct wall of the air guide cavity is provided with a second air guide rib. In the length direction of the wall-mounted air conditioner indoor unit, along the direction in which the airflow is guided by the first air guide rib, the second air guide rib gradually moves away from the axis of the fan assembly within at least a portion of its length.

[0013] This design not only shortens the airflow path when the air passes through the front air outlet, reducing energy loss, but also allows for control of the airflow at the front air outlet and the lower air outlet using the air duct switching plate. This reduces the total number of drive components required to operate the air duct switching plate, thus facilitating cost control of the wall-mounted air conditioner indoor unit. Furthermore, by placing the second air guide on the surface of the air duct switching plate facing the front air outlet, when the air duct switching plate is in its second position (i.e., when the fan assembly's airflow is discharged from the front air outlet), the second air guide ribs can disperse the airflow along the length of the wall-mounted air conditioner indoor unit, resulting in more uniform airflow from the front air outlet.

[0014] In an optional technical solution, the second guide rib includes a first guide portion and a second guide portion. The first guide portion is disposed on the rear duct wall of the fan outlet duct. The second guide portion is disposed on the second surface of the duct switching plate, which is the side of the duct switching plate facing the front air outlet. The first guide portion and the second guide portion are arranged and correspondingly disposed along the flow direction of the airflow in the guide cavity. The first guide portion is perpendicular to the length direction of the wall-mounted air conditioner indoor unit, and the second guide portion is inclined relative to the length direction of the wall-mounted air conditioner indoor unit.

[0015] By placing the first guide section, which is perpendicular to the length of the wall-mounted air conditioner indoor unit, upstream of the airflow, the first guide section can rectify the portion of the airflow near the lower duct wall in the fan's outlet airflow. After rectification, the second guide section, which is diffused, causes the airflow to diffuse along the length of the wall-mounted air conditioner indoor unit, thus improving airflow efficiency.

[0016] In an optional technical solution, the second airflow guide includes a third sub-inclined section, and along the flow direction in which the airflow is guided by the third sub-inclined section, the angle between the third sub-inclined section and the length direction of the wall-mounted air conditioner indoor unit gradually decreases.

[0017] This configuration allows the airflow to gradually flow along the length of the air conditioner when the third sub-inclined section guides the airflow, thereby reducing abrupt changes in airflow direction and minimizing energy loss during airflow reversal.

[0018] In an optional technical solution, the second flow guide further includes a fourth sub-inclined portion; in each of the second flow guide ribs, the third sub-inclined portion is located between the fourth sub-inclined portion and the first flow guide; along the flow direction in which the airflow is guided by the fourth sub-inclined portion, the angle between the fourth sub-inclined portion and the length direction of the wall-mounted air conditioner indoor unit gradually increases.

[0019] This design allows for proper convergence of the airflow direction after diffusion through the third inclined section, thus preventing interference between the air outlets of multiple fan components. Simultaneously, it facilitates the conversion of the oblique velocity into a velocity perpendicular to the length of the wall-mounted air conditioner's indoor unit. After completing the airflow diffusion task, this allows the outlet airflow to blow further forward, increasing the range of influence of the air outlet.

[0020] In an optional technical solution, the second flow guide and the first flow guide rib are respectively arranged on opposite surfaces of the air duct switching plate.

[0021] By setting the first guide rib and the second guide section in a corresponding manner, it is possible to not only achieve downward airflow from the lower air outlet and forward airflow from the front air outlet, as well as simultaneous forward and downward airflow from both the lower and front air outlets, but also improve the flatness of the air duct switching plate by using injection molding, since the same parts on both sides are symmetrically set with material, the temperature change gradient on both sides is consistent when the material cools, which can improve the material flatness of the air duct switching plate.

[0022] In an optional technical solution, the air duct switching plate protrudes away from the front air duct.

[0023] Although the first guide section on the rear duct wall of the fan outlet is perpendicular to the length of the wall-mounted air conditioner indoor unit and does not diffuse the airflow from the fan assembly along the length of the indoor unit, the first guide rib on the duct switching plate, protruding from the front outlet duct, occupies a larger cross-section in the fan outlet duct when the duct switching plate is in the first position. This allows for the diffusing of a larger proportion of the fan assembly's airflow, thus improving the uniformity of the airflow from the lower outlet along the length of the wall-mounted air conditioner indoor unit. Furthermore, when the duct switching plate is in the second position, it can smoothly guide the airflow guided by the rear duct wall of the fan outlet duct, changing its direction to flow forward and upward before entering the front outlet duct.

[0024] The second objective of this utility model is to provide an air conditioner that solves the technical problem of uneven airflow from the lower air outlet.

[0025] The air conditioner provided in the second aspect of this utility model includes a wall-mounted indoor unit and an outdoor unit of the air conditioner, as described above, wherein the outdoor unit is connected to the wall-mounted indoor unit via a refrigerant connection pipe.

[0026] By installing the aforementioned wall-mounted air conditioner indoor unit in the air conditioner, the air conditioner accordingly possesses all the advantages of the aforementioned wall-mounted air conditioner indoor unit, which will not be elaborated upon here. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments or background art of this utility model, the drawings used in the description of the embodiments or background art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 A three-dimensional sectional view of the indoor unit of the wall-mounted air conditioner provided in Embodiment 1 of this utility model;

[0029] Figure 2 This is a schematic diagram of the air duct switching plate in the indoor unit of a wall-mounted air conditioner provided in Embodiment 1 of this utility model.

[0030] Figure 3 This is a cross-sectional view of the wall-mounted air conditioner indoor unit provided in Embodiment 1 of this utility model, where the air duct switching plate is located between the first and second positions.

[0031] Figure 4 This is a three-dimensional sectional view of the wall-mounted air conditioner indoor unit provided in Embodiment 1 of this utility model, viewed from another direction.

[0032] Figure 5 This is a schematic diagram of the structure of the wall-mounted air conditioner indoor unit provided in Embodiment 1 of this utility model.

[0033] Figure 6 This is a schematic diagram of the air duct switching plate in the indoor unit of the wall-mounted air conditioner provided in Embodiment 1 of this utility model, viewed from another direction.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100-Base; 110-Guide cavity; 111-Fan outlet duct; 112-Lower air outlet; 113-Second guide rib; 114-First guide section; 115-Rear duct wall; 120-Front air outlet duct; 121-Front air outlet duct inlet; 122-Front air outlet; 130-Fan cavity; 131-Air inlet; 132-Heat exchanger; 150-Second partition; 160-First partition;

[0036] 200 - Fan assembly;

[0037] 300 - Air duct switching plate; 310 - First guide rib; 311 - First sub-inclined section; 312 - Second sub-inclined section; 320 - Second guide section; 321 - Third sub-inclined section; 322 - Fourth sub-inclined section; 330 - Switching plate body. Detailed Implementation

[0038] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0039] Unless otherwise specified, the definitions of direction in this application are as follows: "Front" refers to the side of the wall-mounted air conditioner indoor unit facing the main indoor space, while "rear" refers to the side facing the wall on which it is mounted. "Below" refers to the side of the wall-mounted air conditioner indoor unit facing the ground. "Above" refers to the side of the wall-mounted air conditioner indoor unit facing the ceiling. "Left" and "right" can be defined based on the aforementioned front, rear, and below; that is, when an observer faces the wall where the wall-mounted air conditioner indoor unit is installed, the observer's left hand is considered left, and the observer's right hand is considered right. Furthermore, "inner" and "outer" are defined based on the shape of the component, which is a cavity, box, or cylinder. The side of the cavity, box, or cylinder facing its internal space is the inner side, and the outer side is the side of the cavity or box facing its external space.

[0040] Example 1:

[0041] Figure 1 A three-dimensional sectional view of the indoor unit of the wall-mounted air conditioner provided in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the air duct switching plate in the indoor unit of a wall-mounted air conditioner provided in Embodiment 1 of this utility model. Figure 3 This is a cross-sectional view of the indoor unit of a wall-mounted air conditioner provided in Embodiment 1 of this utility model. Figures 1-3 As shown, the wall-mounted air conditioner indoor unit provided in Embodiment 1 of this utility model includes a base 100 and a fan assembly 200. The fan assembly 200 is installed on the base 100 in a vertical manner with its axis perpendicular to the base. A guide cavity 110 is formed at the lower part of the base 100. The guide cavity 110 includes a fan outlet duct 111. A lower air outlet 112 is provided below the fan outlet duct 111. The guide cavity 110 is provided with a duct switching plate 300. The duct switching plate 300 is configured to move to a first position that guides the fan outlet duct 111 and the lower air outlet 112. A first guide rib 310 is provided on the first surface of the duct switching plate 300. The first surface is the surface of the duct switching plate 300 facing the lower air outlet 112. In the length direction of the wall-mounted air conditioner indoor unit, along the direction in which the airflow is guided by the first guide rib 310, the first guide rib 310 gradually moves away from the axis of the fan assembly 200 within at least a part of its length.

[0042] Since the fan assembly 200 is mounted vertically on the base 100, its outlet cannot cover most of the length of the wall-mounted air conditioner indoor unit. This results in the highest air velocity in the area directly opposite the outlet of the fan assembly 200 along the length of the indoor unit, decreasing with distance. A first guide rib 310 is provided on the first surface of the duct switching plate 300. As the airflow is guided by the first guide rib 310, it gradually moves away from the axis of the fan assembly 200 over at least a portion of its length. This allows the airflow to diffuse along the length of the indoor unit, increasing the air volume and velocity in the area farther from the fan assembly 200 in the lower outlet 112. This makes the airflow from the lower outlet 112 more uniform, fully utilizing its larger area to increase the air volume of the air conditioner.

[0043] Specifically, in this embodiment, an air inlet 131 is provided at the top of the wall-mounted air conditioner indoor unit, and a heat exchanger 132 is provided below the air inlet 131. The heat exchanger 132 can be an inverted V-shaped heat exchanger, and the lowest point of the inverted V-shaped heat exchanger can be lower than the air inlet area of ​​the fan assembly 200. Air enters the interior of the wall-mounted air conditioner indoor unit through the air inlet 131, exchanges heat with the heat exchanger 132, and is then driven by the fan assembly 200 to be discharged from below the fan assembly 200 and flow into the fan outlet duct 111.

[0044] In this embodiment, the fan assembly 200 can be a mixed-flow fan, with the mixed-flow fans arranged vertically along their axis. Two mixed-flow fans are arranged in the left-right direction along the length of the wall-mounted air conditioner indoor unit. A first partition 160 can be provided on the base 100 to divide the space within the air duct into a fan chamber 130 and a guide chamber 110. The fan chamber 130 is located above the first partition 160, and the fan assembly 200 and heat exchanger 132 are disposed within the fan chamber 130. The guide chamber 110 is located below the first partition 160, and the fan outlet 111, the air duct switching plate 300, and the lower air outlet 112 are all located within the guide chamber 110. The lower air outlet 112 can occupy half or more of the lower surface area of ​​the wall-mounted air conditioner indoor unit, thereby increasing the air outlet area of ​​the wall-mounted air conditioner indoor unit.

[0045] In this embodiment, six first guide ribs 310 are provided for each fan assembly 200, and the six first guide ribs 310 are mirror-symmetrical along the left and right symmetry planes of the fan assembly 200. Therefore, in this embodiment, the even number of first guide ribs 310 gradually moves away from the axis of the fan assembly 200 for at least a portion of their length. Of course, in other implementations, the number of first guide ribs 310 can be two, four, eight, or an even number. In addition, ribs extending in the front-back direction can also be provided at the mirror-symmetrical positions of the even number of first guide ribs 310, which can also serve a guiding function; however, such ribs do not need to be inclined towards the length direction of the wall-mounted air conditioner indoor unit.

[0046] It should be noted that the fan assembly 200 is installed on the base 100 with its axis vertical. However, it is not required that the axis of the fan assembly 200 must be precisely vertical. For example, if the axis of the fan assembly 200 differs from the plumb line by less than 15°, the axis of the fan assembly 200 can be considered vertical.

[0047] like Figure 1 and Figure 2 As shown, optionally, the first guide rib 310 includes a first sub-inclined portion 311, and along the flow direction in which the airflow is guided by the first sub-inclined portion 311, the angle between the first sub-inclined portion 311 and the length direction of the wall-mounted air conditioner indoor unit gradually decreases.

[0048] This configuration allows the first sub-inclined section 311 to guide the airflow, causing the airflow to gradually flow along the length of the air conditioner, thereby reducing abrupt changes in airflow direction and minimizing energy loss when the airflow changes direction.

[0049] If the wall-mounted air conditioner indoor unit is equipped with only one fan assembly 200, then the first guide rib 310 can be equipped with only the first sub-inclined part 311 to fully diffuse the airflow along the length of the wall-mounted air conditioner indoor unit. Even after the airflow exits from the front air outlet 122 of the air conditioner, it can still flow to the left and right sides of the wall-mounted air conditioner indoor unit to maximize the coverage of the air conditioner.

[0050] Of course, in this embodiment, the first guide rib 310 is not necessarily inclined within its own length range. For example, a portion of the rear end of the first guide rib 310 may be perpendicular to the length direction of the wall-mounted air conditioner indoor unit, so as to rectify the airflow blown downward by the fan assembly 200.

[0051] like Figure 1 and Figure 2As shown, optionally, the first guide rib 310 further includes a second sub-inclined portion 312; along the direction in which the airflow is guided by the first guide rib 310, the first sub-inclined portion 311 and the second sub-inclined portion 312 are arranged in sequence, and the angle between the second sub-inclined portion 312 and the length direction of the wall-mounted air conditioner indoor unit gradually increases.

[0052] This configuration allows the airflow direction diffused by the first inclined section 311 to be appropriately converged, thereby avoiding interference between the air outlets of multiple fan assemblies 200. Simultaneously, it facilitates the conversion of the oblique velocity into a velocity perpendicular to the length of the wall-mounted air conditioner's indoor unit. After completing the task of airflow diffusion, this allows the outlet airflow to blow further downwards, increasing the range of influence of the air outlet.

[0053] Specifically, in this embodiment, two fan assemblies 200 can be arranged in the left-right direction in the wall-mounted air conditioner indoor unit. The air outlets of the two fan assemblies 200 are guided by the guide ribs to disperse in the left-right direction. However, when the air outlets of the two fan assemblies 200 converge at the middle of the left-right direction of the wall-mounted air conditioner indoor unit, they collide, resulting in a loss of airflow velocity. Therefore, a second sub-tilted portion 312 is provided to converge the diffused airflow and blow it downwards as much as possible, which can reduce the airflow velocity loss caused by the airflow collision between the two fan assemblies 200. If it is necessary to further change the overall air outlet direction, the air outlet direction of the wall-mounted air conditioner indoor unit can be adjusted by additionally setting left and right sweeping blades (not shown).

[0054] The first sub-inclined portion 311 and the second sub-inclined portion 312 are continuously arranged, meaning that along the flow direction guided by the first guide rib 310, the angle between the first guide rib 310 and the front-back direction first increases and then decreases. Furthermore, the change in the angle between the first guide rib 310 and the front-back direction is gradual; that is, there are no abrupt changes in direction on the left and right surfaces of the first guide rib 310, allowing the airflow to smoothly and gradually change angles, thus reducing the loss of gas energy.

[0055] Figure 4 This is a three-dimensional sectional view of the wall-mounted air conditioner indoor unit provided in Embodiment 1 of this utility model, viewed from another direction. Figure 5 This is a structural schematic diagram of the wall-mounted air conditioner indoor unit provided in Embodiment 1 of this utility model. Figures 3 to 5As shown, optionally, the airflow guiding cavity 110 includes a front air outlet 120, which is located in front of the fan air outlet 111. The front air outlet 120 is provided with a front air outlet 122 and a front air outlet 121. The air duct switching plate 300 is configured to move to a second position that connects the front air outlet 120 and the fan air outlet 111. The lower air duct wall of the airflow guiding cavity 110 is provided with a second airflow guiding rib 113. In the length direction of the wall-mounted air conditioner indoor unit, along the direction in which the airflow is guided by the airflow guiding rib, the second airflow guiding rib 113 gradually moves away from the axis of the fan assembly 200 within at least a part of its length.

[0056] This design not only shortens the airflow path when the airflow passes through the front air outlet 120, reducing energy loss, but also allows for control of the airflow from the front air outlet 121 and the lower air outlet 112 using the air duct switching plate 300. This reduces the total number of drive components required to drive the air duct switching plate 300, thus facilitating cost control of the wall-mounted air conditioner indoor unit. Furthermore, by placing the second air guide 320 on the surface of the air duct switching plate 300 facing the front air outlet 120, when the air duct switching plate 300 is in its second position (i.e., when the air from the fan assembly 200 is discharged from the front air outlet 122), the second air guide rib 113 can disperse the airflow along the length of the wall-mounted air conditioner indoor unit, resulting in more uniform airflow from the front air outlet 122.

[0057] Specifically, the front of the fan cavity 130 and the guide cavity 110 can be a second partition 150, which separates the front air outlet duct 120 located in front and the fan cavity 130 and the fan outlet duct 111 located behind it. The front air outlet duct inlet 121 can extend along the length direction of the wall-mounted air conditioner indoor unit, i.e., the left-right direction, and its length can correspond to the overall length of the fan outlet duct 111 or the guide cavity 110. In this embodiment, the lower air outlet 112 is located below the bottom opening of the fan outlet duct 111. When the air duct switching plate 300 is in the second position, the air duct switching plate 300 blocks the lower opening of the fan outlet duct 111, thereby also blocking the lower air outlet 112.

[0058] Of course, in addition to the first position and the second position, the air duct switching plate 300 can move between the first position and the second position. At this time, the airflow of the fan assembly 200 can achieve the following: part of the air is discharged through the front air outlet 122 via the front air outlet 120, while the other part is discharged through the lower air outlet 112 to achieve lower airflow.

[0059] Figure 6 This is a schematic diagram of the air duct switching plate in the indoor unit of the wall-mounted air conditioner provided in Embodiment 1 of this utility model, viewed from another direction. Figures 3 to 6As shown, optionally, the second guide rib 113 includes a first guide portion 114 and a second guide portion 320. The first guide portion 114 is disposed on the rear air duct wall 115 disposed on the fan outlet duct 111; the second guide portion 320 is disposed on the second surface of the air duct switching plate 300, the second surface being the side of the air duct switching plate 300 facing the front air outlet 122; the first guide portion 114 and the second guide portion 320 are arranged and correspondingly disposed along the flow direction of the airflow in the guide cavity 110; the first guide portion 114 is disposed perpendicular to the length direction of the wall-mounted air conditioner indoor unit, and the second guide portion 320 is disposed inclined relative to the length direction of the wall-mounted air conditioner indoor unit.

[0060] The first guide section 114, which is perpendicular to the length direction of the wall-mounted air conditioner indoor unit, is located upstream of the airflow. The first guide section 114 can rectify the part of the airflow near the lower air duct wall in the fan's outlet airflow. After rectification, the second guide section 320, which is diffused, causes the airflow to diffuse along the length direction of the wall-mounted air conditioner indoor unit, thereby improving airflow efficiency.

[0061] Specifically, in this embodiment, the first airflow guide 114 is located at the rear and upper parts of the lower airflow duct wall, while the second airflow guide 320 is located at the middle part of the lower airflow duct wall in the front-to-back direction. When the airflow of the fan assembly 200 flows along the rear and upper parts of the lower airflow duct wall, the airflow direction gradually changes forward. When the airflow of the fan assembly 200 flows along the middle part of the lower airflow duct wall in the front-to-back direction, the airflow direction gradually changes upward, and also diffuses in the left-to-right direction—that is, along the length of the wall-mounted air conditioner indoor unit. Specifically, the lower airflow duct wall includes the rear airflow duct wall 115 (described later) and the airflow switching plate 300.

[0062] The first guide section 114 and the second guide section 320 are correspondingly arranged, meaning that the first guide section 114 and the second guide section 320 are directly opposite each other in the left-right direction. Although there may be a gap between them in the front-back direction, the airflow guided by the first guide section 114 will not directly collide with the rear end face of the second guide section 320. Therefore, the airflow loss is minimal when passing through the first guide section 114 and the second guide section 320.

[0063] Of course, it is also feasible not to provide the first air guide 114 perpendicular to the length of the wall-mounted air conditioner indoor unit. That is, each part of the air guide rib is inclined relative to the length of the wall-mounted air conditioner indoor unit. Although the first air guide 114 is not used to rectify the air outlet, the second air guide 320 can still guide and disperse the airflow.

[0064] like Figures 4 to 6As shown, optionally, the second airflow guide 320 includes a third sub-inclined section 321, and along the flow direction in which the airflow is guided by the third sub-inclined section 321, the angle between the third sub-inclined section 321 and the length direction of the wall-mounted air conditioner indoor unit gradually decreases.

[0065] This configuration allows the airflow to gradually flow along the length of the air conditioner when the third sub-inclined section 321 guides the airflow, thereby reducing abrupt changes in airflow direction and minimizing energy loss during airflow reversal.

[0066] If the wall-mounted air conditioner indoor unit is equipped with only one fan assembly 200, then the second air guide 320 can be equipped with only the third sub-inclined part 321 to fully diffuse the airflow along the length of the wall-mounted air conditioner indoor unit. Even after the airflow exits from the front air outlet 122 of the air conditioner, it can still flow to the left and right sides of the wall-mounted air conditioner indoor unit to maximize the coverage of the air conditioner.

[0067] Of course, in this embodiment, the second guide section 320 is not necessarily inclined throughout its length. For example, a portion of the rear end of the second guide section 320 may be perpendicular to the length direction of the wall-mounted air conditioner indoor unit, serving as an extension of the first guide section 114.

[0068] like Figures 4 to 6 As shown, optionally, the second flow guide 320 also includes a fourth sub-inclined portion 322; in each second flow guide rib 113, a third sub-inclined portion 321 is located between the fourth sub-inclined portion 322 and the first flow guide 114; along the flow direction in which the airflow is guided by the fourth sub-inclined portion 322, the angle between the fourth sub-inclined portion 322 and the length direction of the wall-mounted air conditioner indoor unit gradually increases.

[0069] This configuration allows for the appropriate convergence of the airflow direction diffused by the third inclined section 321, thereby preventing interference between the air outlets of multiple fan assemblies 200. Simultaneously, it facilitates the conversion of the oblique velocity into a velocity perpendicular to the length of the wall-mounted air conditioner's indoor unit. After completing the airflow diffusion task, this allows the outlet airflow to blow further forward, increasing the range of influence of the air outlet.

[0070] Specifically, in this embodiment, two fan assemblies 200 can be arranged in the left-right direction in the wall-mounted air conditioner indoor unit. The air outlets of the two fan assemblies 200 are guided by the guide ribs to disperse in the left-right direction. However, when the air outlets of the two fan assemblies 200 converge at the middle of the left-right direction of the wall-mounted air conditioner indoor unit, they collide, resulting in a loss of airflow velocity. Therefore, a fourth sub-tilted portion 322 is provided to converge the diffused airflow and blow it forward as much as possible, which can reduce the airflow velocity loss caused by the airflow collision between the two fan assemblies 200. If it is necessary to further change the overall air outlet direction, the air outlet direction of the wall-mounted air conditioner indoor unit can be adjusted by the left and right sweeping blades.

[0071] The third sub-inclined section 321 and the fourth sub-inclined section 322 are continuously arranged, meaning that along the flow direction guided by the second guide section 320, the angle between the second guide section 320 and the front-back direction first increases and then decreases. Furthermore, the change in the angle between the second guide section 320 and the front-back direction is gradual; that is, there are no abrupt changes in direction on the left and right surfaces of the second guide section 320, allowing the airflow to smoothly and gradually change angles, reducing the loss of gas energy.

[0072] like Figure 1 , Figure 2 and Figure 4 , Figure 6 As shown, optionally, the second guide section 320 and the first guide rib 310 are respectively arranged on opposite surfaces of the air duct switching plate 300.

[0073] By correspondingly arranging the first guide rib 310 and the second guide section 320, it is possible to not only achieve downward airflow from the lower air outlet 112 and forward airflow from the front air outlet 122, as well as simultaneous forward and downward airflow from both the lower air outlet 112 and the front air outlet 122, but also, when the air duct switching plate 300 is processed by injection molding, since the same parts on both sides are symmetrically arranged with material, the temperature change gradient on both sides is consistent during material cooling, which can improve the material flatness of the air duct switching plate 300.

[0074] Specifically, the air duct switching plate 300 includes a switching plate body 330. In this embodiment, the second flow guide 320 and the first flow guide rib 310 are correspondingly arranged on opposite surfaces of the air duct switching plate 300. This means that the positions where they are connected to the switching plate body 330 are corresponding. That is, if the first surface of the switching plate body 330 at a certain position is connected to the first flow guide rib 310, then the second surface at that position is connected to the second flow guide 320. Not only are the positions symmetrical, but the protrusion heights of the first flow guide rib 310 and the second flow guide 320 from the switching plate body 330 are also similar. Since the air duct switching plate 300 can preferably be integrally molded by injection molding, when the material is injected into the cavity, when the connection position between the first flow guide on the first surface and the switching plate body 330 cools and shrinks, the connection position between the second flow guide 320 on the second surface and the switching plate body 330 will also cool and shrink. Both sides will cool and shrink at the same rate, so the switching plate body 330 will not bend due to uneven cooling and shrinkage. Otherwise, if the first guide rib 310 or the second guide portion 320 is provided only on one side of the switching plate 330 at a certain position, the switching plate 330 may be bent or at least locally dented in the opposite position of the first guide rib 310 or the second guide rib 113 provided during injection molding.

[0075] like Figure 1 and Figures 3 to 5 As shown, optionally, the air duct switching plate 300 protrudes from the front air outlet duct 120.

[0076] Although the first guide portion 114 on the rear duct wall 115 of the fan outlet duct 111 is perpendicular to the length direction of the wall-mounted air conditioner indoor unit and does not diffuse the airflow from the fan assembly 200 towards the length direction of the wall-mounted air conditioner indoor unit, the duct switching plate 300 protrudes from the front outlet duct 120. Therefore, when the duct switching plate 300 is in the first position, the first guide rib 310 on the duct switching plate 300 can occupy a larger cross-section in the fan outlet duct 111 to guide and diffuse a larger proportion of the airflow from the fan assembly 200, thereby improving the uniformity of the airflow from the lower outlet 112 along the length direction of the wall-mounted air conditioner indoor unit. Moreover, when the duct switching plate 300 is in the second position, the airflow guided by the rear duct wall 115 of the fan outlet duct 111 can be smoothly guided to change its direction to flow forward and upward and enter the front outlet duct 120.

[0077] Specifically, the shape of the switching plate body 330 of the air duct switching plate 300 is consistent at all positions along its length. When the air duct switching plate 300 is in the first position, because the switching plate body 330 protrudes rearward, the first guide rib 310 can occupy a larger area in the fan outlet duct 111, guiding and dispersing more airflow. When the air duct switching plate 300 is in the second position, after the outlet airflow passes through the switching plate body 330, the airflow direction smoothly changes from forward and downward to forward and upward. At this time, the bottom of the rear air duct wall 115 is at the same angle as the rear part of the upper surface of the switching plate body 330, and a consistent continuous arc can be formed.

[0078] Example 2:

[0079] Embodiment 2 also provides an air conditioner, including a wall-mounted indoor unit and an outdoor unit of any of the above-mentioned types, wherein the outdoor unit is connected to the wall-mounted indoor unit via a refrigerant connection pipe.

[0080] By installing the aforementioned wall-mounted air conditioner indoor unit in the air conditioner, the air conditioner accordingly possesses all the advantages of the aforementioned wall-mounted air conditioner indoor unit, which will not be elaborated upon here.

[0081] Although the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

[0082] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0083] In the above embodiments, descriptions of directions such as "up" and "down" are based on the accompanying drawings.

[0084] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0085] Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wall-mounted air conditioner indoor unit, characterized in that, The device includes a base (100) and a fan assembly (200). The fan assembly (200) is mounted vertically on the base (100). The lower part of the base (100) forms a flow guide cavity (110). The flow guide cavity (110) includes a fan outlet duct (111). A lower air outlet (112) is provided below the fan outlet duct (111). The flow guide cavity (110) is provided with a duct switching plate (300). The duct switching plate (300) is configured to move to enable the fan outlet. At the first position of the duct (111) and the lower air outlet (112), the first surface of the duct switching plate (300) is provided with a first guide rib (310), the first surface being the surface of the duct switching plate (300) facing the lower air outlet (112); along the length direction of the wall-mounted air conditioner indoor unit, along the direction in which the airflow is guided by the first guide rib (310), the first guide rib (310) gradually moves away from the axis of the fan assembly (200) within at least a part of its length.

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The first guide rib (310) includes a first sub-inclined portion (311), and the angle between the first sub-inclined portion (311) and the length direction of the wall-mounted air conditioner indoor unit gradually decreases along the flow direction of the airflow guided by the first sub-inclined portion (311).

3. The wall-mounted air conditioner indoor unit according to claim 2, characterized in that, The first guide rib (310) further includes a second sub-inclined portion (312); along the direction in which the airflow is guided by the first guide rib (310), the first sub-inclined portion (311) and the second sub-inclined portion (312) are arranged in sequence, and the angle between the second sub-inclined portion (312) and the length direction of the wall-mounted air conditioner indoor unit gradually increases.

4. The wall-mounted air conditioner indoor unit according to claims 1-3, characterized in that, The airflow guiding cavity (110) includes a front air outlet duct (120), which is located in front of the fan outlet duct (111). The front air outlet duct (120) is provided with a front air outlet (122) and a front air outlet (121). The air duct switching plate (300) is configured to move to a second position that connects the front air outlet duct (120) and the fan outlet duct (111). The lower air duct wall of the airflow guiding cavity (110) is provided with a second airflow guiding rib (113). In the length direction of the wall-mounted air conditioner indoor unit, along the direction in which the airflow is guided by the first airflow guiding rib (310), the second airflow guiding rib (113) gradually moves away from the axis of the fan assembly (200) within at least a part of its length.

5. The wall-mounted air conditioner indoor unit according to claim 4, characterized in that, The second guide rib (113) includes a first guide portion (114) and a second guide portion (320). The first guide portion (114) is disposed on the rear air duct wall (115) of the fan outlet duct (111). The second guide portion (320) is disposed on the second surface of the air duct switching plate (300), which is the side of the air duct switching plate (300) facing the front air outlet (122). The first guide portion (114) and the second guide portion (320) are arranged and correspondingly disposed along the flow direction of the airflow in the guide cavity (110). The first guide portion (114) is disposed perpendicular to the length direction of the wall-mounted air conditioner indoor unit, and the second guide portion (320) is disposed inclined relative to the length direction of the wall-mounted air conditioner indoor unit.

6. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that, The second flow guide (320) includes a third sub-inclined section (321), and the angle between the third sub-inclined section (321) and the length direction of the wall-mounted air conditioner indoor unit gradually decreases along the flow direction of the airflow guided by the third sub-inclined section (321).

7. The wall-mounted air conditioner indoor unit according to claim 6, characterized in that, The second flow guide (320) further includes a fourth sub-inclined portion (322); in each of the second flow guide ribs (113), the third sub-inclined portion (321) is located between the fourth sub-inclined portion (322) and the first flow guide (114); along the flow direction in which the airflow is guided by the fourth sub-inclined portion (322), the angle between the fourth sub-inclined portion (322) and the length direction of the wall-mounted air conditioner indoor unit gradually increases.

8. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that, The second flow guide (320) and the first flow guide rib (310) are respectively arranged on opposite surfaces of the air duct switching plate (300).

9. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that, The air duct switching plate (300) protrudes away from the front air duct (120).

10. An air conditioner, characterized in that, The air conditioner includes a wall-mounted indoor unit and an outdoor unit as described in any one of claims 1-9, wherein the outdoor unit is connected to the wall-mounted indoor unit via a refrigerant connection pipe.

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