Air conditioner indoor unit capable of supplying air obliquely and downwards

Abstract

The utility model relates to the technical field of air conditioning, in particular to an air conditioner indoor unit capable of supplying air obliquely and downwards. The shell is provided with an air inlet and an air outlet which are sequentially arranged in a spaced mode in the front-back direction; the axial flow fans are arranged in the shell and used for blowing the inlet air flow out of the air outlets, and the central axis of each axial flow fan inclines relative to the up-down direction of the shell so that the axial flow fans can obliquely and downwards discharge air; and the heat exchanger is arranged between the axial flow fan and the air outlet and is used for carrying out heat exchange with the airflow blown out by the axial flow fan. According to the utility model, the heat exchanger is arranged between the downward inclined axial flow fan and the air outlet, so that inclined downward air outlet is realized, and meanwhile, the problems of insufficient contact between inlet air flow and the heat exchanger, non-uniform heat exchange and high noise caused by the fact that the axial flow fan is directly arranged at the air outlet are avoided; and the heat exchange effect of the air conditioner indoor unit is improved, so that the use experience of a user is improved.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an indoor air conditioning unit that supplies air at an angle downwards. Background Technology

[0002] Traditional wall-mounted air conditioners typically use a cross-flow air supply system, which suffers from problems such as a small air outlet angle, small air supply range, low air outlet velocity, short air supply distance, cold air blowing easily into people, and hot air not reaching the ground. Therefore, some wall-mounted air conditioners on the market now use axial flow fans, with a circular air outlet on the front panel and the axial flow fan positioned at an angle relative to the vertical plane at the circular air outlet to optimize the airflow performance.

[0003] However, existing axial-flow wall-mounted air conditioners place the axial fan at the air outlet and the heat exchanger on the air inlet side of the axial fan. This cannot effectively guarantee the air velocity distribution at the heat exchanger inlet, easily leading to uneven airflow distribution and affecting heat exchange efficiency. Furthermore, placing the axial fan directly at the air outlet also results in significant noise levels. Additionally, the circular air outlets on the front panel of existing air conditioners not only disrupt the uniformity of the front panel's appearance, resulting in lower aesthetic appeal, but also make it difficult to install air guides at the outlet, and the airflow direction cannot meet the diverse airflow needs of users. Utility Model Content

[0004] In view of the above problems, this utility model proposes an air conditioning indoor unit with inclined downward air supply that overcomes or at least partially solves the above problems.

[0005] One objective of this invention is to provide an air conditioner indoor unit that can improve heat exchange efficiency, thereby enhancing the user experience.

[0006] A further objective of this invention is to improve the heat exchange efficiency of the indoor unit of an air conditioner.

[0007] Another further objective of this invention is to improve the aesthetic appeal of the product.

[0008] Specifically, this utility model provides an indoor unit for an air conditioner, comprising:

[0009] The housing has an air inlet and an air outlet that are spaced apart in a front-to-back direction;

[0010] At least one axial flow fan, disposed within a housing, is used to direct airflow entering the housing from the inlet and exiting through the outlet, wherein the central axis of each axial flow fan is inclined relative to the vertical direction of the housing, so that the axial flow fan discharges air downwards at an angle; and

[0011] The heat exchanger is installed inside the housing, between the axial fan and the air outlet, and is used to exchange heat with the airflow blown out by the axial fan.

[0012] Optionally, the indoor unit of the air conditioner includes multiple axial fans, which are spaced apart in the left-right direction of the casing so that the airflow inside the casing is tilted and blown downward under the action of the multiple axial fans.

[0013] Optionally, the tilt angle of the central axis of each axial fan relative to the vertical direction of the casing is selected from any value between 0.5° and 29°.

[0014] Optionally, the indoor unit of the air conditioner also includes:

[0015] The fan casing is located inside the housing between the axial fan and the heat exchanger, and is used to guide the airflow blown out by the axial fan toward the heat exchanger.

[0016] Optionally, the fan housing includes multiple guide shrouds arranged in the left-right direction of the housing. The multiple guide shrouds are arranged one-to-one with multiple axial flow fans. Each guide shroud defines an air outlet cavity corresponding to its corresponding axial flow fan between itself and the heat exchanger, so that the air outlet cavities of the multiple axial flow fans are separated.

[0017] Optionally, the air outlet cavity expands gradually from back to front to guide the airflow blown by the axial fan to flow evenly to the heat exchanger.

[0018] Optionally, the heat exchanger is flat and inclined relative to the shell in the vertical direction, and an air outlet space is defined between the side of the heat exchanger away from the axial fan and the shell.

[0019] Optionally, the heat exchanger is a flat plate extending vertically, and the dimension of the heat exchanger in the vertical direction of the shell is larger than the dimension of the axial flow fan in the vertical direction of the shell.

[0020] Optionally, each axial fan rotates in the opposite direction to the axial fan adjacent to it, so that the airflow blown by the multiple axial fans converges in front of the casing.

[0021] Optionally, the housing includes a rear cover, an air outlet frame, and a front panel arranged sequentially in the front-rear direction, with the air inlet located on the rear cover and the air outlet located at the bottom of the air outlet frame and / or the lower part of the front panel.

[0022] This utility model discloses an indoor air conditioning unit, comprising a casing, an axial flow fan, and a heat exchanger. By creating an air inlet and an air outlet on the casing, the axial flow fan is positioned inside the casing with its central axis inclined relative to the vertical direction of the casing, causing the axial flow fan to discharge air downwards at an angle. The heat exchanger is positioned between the axial flow fan and the air outlet to exchange heat with the airflow blown out by the axial flow fan. This achieves heat exchange between the heat exchanger and the downward-flowing airflow from the axial flow fan. Therefore, this utility model's indoor air conditioning unit, while achieving downward-flowing airflow, avoids the problems of insufficient contact between the incoming airflow and the heat exchanger, uneven heat exchange, and excessive noise caused by directly placing the axial flow fan at the air outlet. It ensures that the airflow inside the indoor air conditioning unit fully enters the internal space before being driven by the axial flow fan through the heat exchanger, increasing the contact time and uniformity between the airflow and the heat exchanger, thereby improving the heat exchange efficiency of the indoor air conditioning unit and ultimately enhancing the user experience.

[0023] Furthermore, the indoor unit of this invention includes multiple axial flow fans, which are spaced apart in the left-right direction of the casing, so that the airflow inside the casing is directed downwards by the multiple axial flow fans. Thus, the indoor unit of this invention effectively increases the air volume by utilizing the multiple axial flow fans spaced apart in the left-right direction of the casing, thereby further improving the heat exchange efficiency of the indoor unit.

[0024] Furthermore, in the indoor unit of this invention, the housing includes a rear cover, an air outlet frame, and a front panel arranged sequentially in a front-to-back direction. The air inlet is located on the rear cover, and the air outlet is located at the bottom of the air outlet frame and / or the lower part of the front panel. Therefore, the air inlet and outlet direction of the indoor unit of this invention is rear-inlet and front-outlet, and the air outlet is located at the bottom front side of the housing, which is compatible with user habits. This avoids the problem of disrupting the uniformity and aesthetics of the front panel due to directly opening a circular air outlet on the front panel, thus improving the appearance of the indoor unit and further enhancing the user experience.

[0025] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0026] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0027] Figure 1 This is a schematic diagram of the structure of an indoor air conditioner unit according to an embodiment of the present invention;

[0028] Figure 2 yes Figure 1 The diagram shows the structure of the indoor unit of the air conditioner from another perspective.

[0029] Figure 3 This is an exploded view of an indoor air conditioner unit according to an embodiment of this utility model;

[0030] Figure 4 This is a cross-sectional schematic diagram of an indoor air conditioner unit according to an embodiment of the present invention, viewed from a top view.

[0031] Figure 5 This is a schematic diagram of the structure of the axial flow fan and fan housing of an air conditioner indoor unit according to an embodiment of the present invention;

[0032] Figure 6 This is a cross-sectional schematic diagram of the indoor unit of an air conditioner according to an embodiment of the present invention, viewed from the side.

[0033] Figure 7 This is a cross-sectional view of the indoor unit of an air conditioner according to another embodiment of the present invention from a side view. Detailed Implementation

[0034] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0035] Figure 1 This is a schematic diagram of the structure of an indoor air conditioner unit according to an embodiment of the present invention. Figure 2 yes Figure 1 The diagram shows the structure of the indoor unit of the air conditioner from another perspective. Figure 3 This is an exploded view of an indoor air conditioner unit according to an embodiment of this utility model. Figure 4 This is a cross-sectional view of the indoor unit of an air conditioner according to an embodiment of the present invention, taken from a top-down perspective. Figure 5 This is a structural schematic diagram of the axial flow fan and fan housing of an indoor air conditioning unit according to an embodiment of the present invention. Figure 6 This is a cross-sectional view of the indoor unit of an air conditioner according to an embodiment of the present invention, viewed from the side. Figure 7 This is a cross-sectional view of the indoor unit of an air conditioner according to another embodiment of the present invention from a side view.

[0036] like Figure 1 and Figure 2 As shown, the indoor unit 10 of the air conditioner according to this embodiment of the present invention generally includes a housing 100. Specifically, the housing 100 has an air inlet 140 and an air outlet 150 arranged sequentially at intervals in the front-to-back direction. Thus, the air inlet and outlet direction of the indoor unit 10 of the present invention is rear air inlet and front air outlet.

[0037] like Figures 3-7 As shown, the indoor unit 10 of the air conditioner in this embodiment of the present invention may further include at least one axial flow fan 200.

[0038] Specifically, at least one axial flow fan 200 is disposed within the housing 100 to cause the airflow entering the housing 100 from the air inlet 140 to be blown out through the air outlet 150. That is to say, the air conditioner indoor unit 10 of this embodiment of the present invention has multiple axial flow fans 200 disposed between the air inlet 140 and the air outlet 150 to cause the airflow entering the housing 100 from the air inlet 140 to flow forward and be blown out through the air outlet 150.

[0039] In addition, such as Figure 6 or Figure 7 As shown, the central axis of each axial fan 200 is inclined relative to the vertical direction of the housing 100, so that the axial fan 200 discharges air at an angle downwards. That is, the central axis of each axial fan 200 is inclined downwards from back to front along the front-back direction of the housing 100.

[0040] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the indoor unit 10 of the air conditioner may also include a heat exchanger 300. Specifically, the heat exchanger 300 is disposed inside the housing 100, located between the axial fan 200 and the air outlet 150, and is used to exchange heat with the airflow blown out by the axial fan 200. That is, the heat exchanger 300 is disposed between the axial fan 200 and the air outlet 150. Thus, the airflow entering the housing 100 from the air inlet 140 can fully contact the heat exchanger 300 under the action of the axial fan 200 and then be blown out through the air outlet 150.

[0041] In this embodiment, as Figure 6 or Figure 7 As shown, each axial fan 200 is set with its central axis tilted in the vertical direction relative to the housing 100, which increases the gap between the rear and upper sides of the multiple axial fans 200 and the housing 100, thereby increasing the air intake space on the rear and upper sides of the multiple axial fans 200, thereby increasing the air intake volume on the rear and upper sides of each axial fan 200, and thus increasing the overall air supply volume of the indoor unit 10 of the air conditioner.

[0042] Furthermore, in this embodiment of the present invention, the air conditioner indoor unit 10, by placing the heat exchanger 300 between the axial fan 200 and the air outlet 150, ensures that the airflow inside the air conditioner indoor unit 10 has fully entered the internal space of the air conditioner indoor unit 10 before being driven by the axial fan 200 through the heat exchanger 300, thereby increasing the contact time and contact uniformity between the airflow and the heat exchanger 300, and thus improving the heat exchange efficiency of the air conditioner indoor unit 10.

[0043] Therefore, the indoor unit 10 of this utility model, while achieving downward tilted airflow, avoids the problems of insufficient contact between the incoming airflow and the heat exchanger 300, uneven heat exchange, and excessive noise caused by directly placing the axial fan 200 at the air outlet 150. It ensures that the airflow in the indoor unit 10 has fully entered the internal space of the indoor unit 10 before being driven by the axial fan 200 through the heat exchanger 300, thereby increasing the contact time and uniformity between the airflow and the heat exchanger 300, thus improving the heat exchange efficiency of the indoor unit 10 and the heat exchange effect of the indoor unit 10.

[0044] In some embodiments, such as Figures 3-5 As shown, the indoor unit 10 of the air conditioner includes a plurality of axial flow fans 200, which are spaced apart in the left-right direction of the housing 100, so that the airflow inside the housing 100 is directed downwards by the plurality of axial flow fans 200. Specifically, as Figure 4 As shown, multiple axial flow fans 200 are arranged at intervals in the left-right direction of the housing 100 and are set at an angle downwards relative to each other.

[0045] Therefore, the air conditioner indoor unit 10 of this utility model utilizes multiple axial flow fans 200 arranged at intervals in the left and right directions of the housing 100 to effectively increase the air supply volume, thereby further improving the heat exchange efficiency of the air conditioner indoor unit 10.

[0046] In some embodiments, such as Figure 6 or Figure 7 As shown, the central axes of the plurality of axial flow fans 200 are parallel. Further, the tilt angle of the central axis of each axial flow fan 200 relative to the vertical direction of the housing 100 is selected from any value between 0.5° and 29°. Specifically, the tilt angle of the central axis of each axial flow fan 200 relative to the vertical direction of the housing 100 is selected from any value between 5° and 10°.

[0047] In one specific embodiment, the tilt angle of the central axis of each axial fan 200 relative to the vertical direction of the housing 100 can be 7°. Therefore, by selecting an appropriate angle between the central axis of each axial fan 200 and the vertical direction of the housing 100, the indoor unit 10 is tilted downwards to deliver air while reducing the space occupied by the axial fans 200 in the front-rear direction of the housing of the indoor unit 10, thus optimizing the spatial layout within the indoor unit 10.

[0048] In some embodiments, such as Figure 5 As shown, the rotation direction of each axial fan 200 is opposite to that of the adjacent axial fan 200, so that the airflow blown out by the multiple axial fans 200 can converge in front of the housing 100.

[0049] Therefore, when multiple axial flow fans 200 rotate in opposite directions adjacent to each other, the airflow generated by every two adjacent axial flow fans 200 will interact and overlap within the indoor unit 10 of the air conditioner, enhancing airflow turbulence and mixing, thereby improving the airflow circulation efficiency and uniformity within the indoor unit 10. Furthermore, the counter-rotation of every two adjacent axial flow fans 200 reduces the collision and cancellation of airflows when they meet, lowering the overall noise level of the indoor unit 10 while increasing the air delivery distance of each axial flow fan 200. This facilitates the convergence of airflows from multiple axial flow fans 200 in front of the casing 100, further improving the air delivery effect of the indoor unit 10.

[0050] In some embodiments, such as Figures 3-5 As shown, in the indoor unit 10 of this utility model, there are two axial flow fans 200. Specifically, the two axial flow fans 200 are symmetrically arranged in the left-right direction of the housing 100, and the central axes of the two axial flow fans 200 are parallel.

[0051] As a result, the airflow from the two axial fans 200 converges at the front center of the housing 100. In addition, the two axial fans 200 rotate in opposite directions, so that the airflow from multiple axial fans 200 converges at the front of the housing 100, thereby improving the air supply effect of the indoor unit 10.

[0052] In some embodiments, such as Figure 6 As shown, the heat exchanger 300 is flat and inclined relative to the housing 100 in the vertical direction, and the side of the heat exchanger 300 away from the axial fan 200 defines an air outlet space 310 between it and the housing 100. That is to say, the heat exchanger 300 can be designed as a straight-vent type and inclinedly arranged in the housing to save space in the overall thickness of the air conditioning indoor unit 10.

[0053] Specifically, such as Figure 6As shown, in the indoor unit 10 of this utility model, the heat exchanger 300 is arranged perpendicularly to the central axis of the axial flow fan 200. Thus, the orientation of the heat exchanger 300 is matched with the orientation of the multiple axial flow fans 200, so that the heat exchanger 300 and the multiple axial flow fans 200 can fit together more closely.

[0054] Therefore, the heat exchanger 300 is more closely fitted to the multiple axial fans 200, reducing the distance between the airflow from each axial fan 200 and the heat exchanger 300. This improves the uniformity of airflow in the indoor unit 10, thereby further enhancing the heat exchange efficiency of the indoor unit 10. Simultaneously, the heat exchanger 300 is angled within the casing, reducing the space it occupies within the indoor unit 10 and further optimizing the spatial layout.

[0055] In some embodiments, such as Figure 7 As shown, the heat exchanger 300 can also be a flat plate extending vertically, and the dimension of the heat exchanger 300 in the left-right direction of the housing 100 is larger than the dimension of the multiple axial flow fans 200 in the left-right direction of the housing 100. That is to say, the heat exchanger 300 can be designed as a straight-vent type, vertically arranged in the housing, to increase the air inlet space of the heat exchanger 300 on the side adjacent to the axial flow fans 200.

[0056] Therefore, the heat exchanger 300 is laid vertically and horizontally inside the shell 100, which increases the air intake space on the side of the heat exchanger 300 adjacent to the axial flow fan 200, improves the heat exchange fullness, and further improves the heat exchange efficiency of the air conditioning indoor unit 10.

[0057] In some embodiments, such as Figures 3-7 As shown, the indoor unit 10 of the air conditioner may also include a fan housing 400. The fan housing 400 is disposed inside the housing 100, located between the axial fan 200 and the heat exchanger 300, and is used to guide the airflow blown by the axial fan 200 toward the heat exchanger 300. That is, the fan housing 400 is fixedly disposed at the air outlet end of the axial fan 200, guiding the airflow blown by the axial fan 200 toward the surface of the heat exchanger 300 near the air outlet 150.

[0058] Therefore, in the air conditioner indoor unit 10 of this embodiment, the fan casing 400 ensures that the airflow blown by the axial fan 200 flows directly and orderly to the heat exchanger 300, reducing airflow turbulence and energy loss. Simultaneously, the directional airflow helps enhance the convective heat transfer coefficient of the heat exchanger 300 surface, thereby improving the overall heat exchange efficiency of the air conditioner indoor unit 10. Furthermore, the airflow within the air conditioner indoor unit 10, guided by the fan casing 400, is more evenly distributed on the surface of the heat exchanger 300, avoiding localized overheating or overcooling.

[0059] In some embodiments, such as Figures 3-7 As shown, the fan housing 400 includes a plurality of guide shrouds 410 arranged in the left-right direction of the housing 100. Each guide shroud 410 corresponds one-to-one with a plurality of axial flow fans 200. Each guide shroud 410 defines an air outlet cavity 411 corresponding to its corresponding axial flow fan 200 between itself and the heat exchanger 300, thus separating the air outlet cavities 411 of the plurality of axial flow fans 200. In other words, the fan housing 400 includes a plurality of guide shrouds 410 corresponding one-to-one with each axial flow fan 200, so that each axial flow fan 200 corresponds to an independent air outlet cavity 411.

[0060] Therefore, in the indoor unit 10 of the air conditioner in this embodiment of the present invention, each axial fan 200 corresponds to an independent air outlet 411, thereby ensuring that the airflow generated by each axial fan 200 can be effectively guided to the heat exchanger 300 without mutual interference or mixing. This makes the airflow distribution on the surface of the heat exchanger 300 more uniform and orderly, thereby improving the heat exchange efficiency.

[0061] In addition, the fan housing 400 also includes an annular fan mounting part 420 that protrudes rearward from the center of the guide shroud 410. The fan mounting part 420 is used to install and fix the axial flow fan 200 so that the air outlet end of the axial flow fan 200 is connected to the corresponding guide shroud 410.

[0062] Furthermore, the air outlet cavity 411 gradually expands from back to front to guide the airflow blown by the axial fan 200 to flow evenly to the heat exchanger 300. In other words, the ventilation opening diameter of the guide shroud 410 gradually increases from back to front along the front-back direction of the shell 100 to gradually expand the airflow circulation area inside the guide shroud 410.

[0063] Therefore, the air conditioner indoor unit 10 of this embodiment, by setting an air outlet cavity 411 that gradually expands from back to front, allows the airflow blown by the axial fan 200 to gradually disperse and become uniform during the flow process, ensuring that the airflow can evenly cover the entire surface of the heat exchanger 300, thereby improving the heat exchange efficiency of the air conditioner indoor unit 10. At the same time, the gradual expansion of the air outlet cavity 411 from back to front reduces the airflow resistance within the guide shroud 410, which helps to reduce the energy consumption of the axial fan 200, improves the energy efficiency ratio of the entire air conditioning system, and also reduces the turbulence and eddies generated during the airflow process, thereby reducing the noise level of the air conditioner indoor unit 10 and improving the user experience.

[0064] In some embodiments, such as Figures 1-4 , Figure 6 and Figure 7As shown, the housing 100 includes a rear cover 110, an air outlet frame 120, and a front panel 130 arranged sequentially in the front-rear direction. Specifically, an air inlet 140 is provided on the rear cover 110, and an air outlet 150 is provided at the bottom of the air outlet frame 120 and / or the lower part of the front panel 130. Furthermore, the rear cover 110, the air outlet frame 120, and the front panel 130 are sequentially connected and fixed in the front-rear direction of the housing 100, and the air outlet frame 120 has an inwardly protruding mounting member 121 for mounting and fixing the heat exchanger 300, so that the heat exchanger 300 is disposed within the air outlet frame 120. Therefore, the air inlet and outlet direction of the indoor unit 10 of this embodiment is rear air inlet and front air outlet.

[0065] In one specific embodiment, such as Figures 2-4 , Figure 6 and Figure 7 As shown, the air inlet 140 includes a plurality of air inlet holes 141 spaced apart on the outer peripheral side of the rear cover 110, so that airflow can enter the housing 100 from various directions at the rear of the housing 100.

[0066] Specifically, multiple air inlets 140 are evenly spaced on the outer periphery of the rear cover 110 to improve the uniformity of airflow distribution entering the housing 100 and reduce eddies and turbulence in the airflow inside the housing 100, thereby improving the stability and efficiency of the airflow.

[0067] Therefore, the air conditioner indoor unit 10 of this utility model, by opening multiple air inlets 141 on the outer periphery of the rear cover 110, can increase the air intake area and improve air intake efficiency compared with the traditional single air inlet 140 design. At the same time, it effectively disperses the impact force when the airflow enters the housing 100, reduces the generation of noise, and thus improves the user's comfort and user experience.

[0068] In another specific embodiment, such as Figure 6 and Figure 7 As shown, both the upper and lower side plates of the rear cover 110 extend horizontally, and the dimension of the upper side plate in the front-rear direction is larger than that of the lower side plate in the front-rear direction. Figures 1-4 As shown, the side plates on both the left and right sides of the rear cover 110 extend vertically and are wedge-shaped plates that are wider at the top and narrower at the bottom. Thus, the rear cover 110 is generally wider at the top and narrower at the bottom, which facilitates the downward tilting of the axial flow fan 200.

[0069] In addition, such as Figure 6 and Figure 7As shown, the front panel 130 extends vertically, and the bottom edge of the front panel 130 and the bottom front edge of the air outlet frame 120 define an air outlet 150, so that the air outlet 150 is located at the bottom front side of the housing, which improves the appearance of the indoor unit of the air conditioner.

[0070] Therefore, the air inlet and outlet direction of the indoor unit of this utility model is rear air inlet and front air outlet, and the air outlet is located at the bottom front side of the casing, which is adapted to the user's usage habits. This avoids the problem of damaging the uniformity and reducing the aesthetics of the front panel due to directly opening a circular air outlet on the front panel, thereby improving the appearance of the indoor unit and further enhancing the user experience.

[0071] In some embodiments, such as Figure 6 As shown, the air outlet 150 includes a front air outlet 151 located below the front panel 130 and a bottom air outlet 152 located on the bottom front side of the air outlet frame 120. Specifically, when both the front air outlet 151 and the bottom air outlet 152 are open, they can connect to form a large-volume air outlet located on the lower front side of the housing. The opening and closing states of the front air outlet 151 and the bottom air outlet 152 can be adjusted according to needs to adapt to more application scenarios. For example, in situations requiring rapid cooling, the front air outlet 151 can be opened to allow the cold air to blow further, thereby improving the cooling effect; while in situations requiring rapid heating, the bottom air outlet 152 can be opened to allow the hot air to land more easily, thereby improving the heating effect.

[0072] Accordingly, such as Figure 6 As shown, the indoor unit 10 of the air conditioner also includes a front air guide plate 500 and a bottom air guide plate 600. The front air guide plate 500 is located at the front air outlet 151 and is used to control the opening and closing of the front air outlet 151 and adjust the air outlet direction of the front air outlet 151. The bottom air guide plate 600 is located at the bottom air outlet 152 and is used to control the opening and closing of the bottom air outlet 152 and adjust the air outlet direction of the bottom air outlet 152.

[0073] like Figure 6 As shown, when both the front air guide plate 500 and the bottom air guide plate 600 are in the open position, the front air outlet 151 and the bottom air outlet 152 can simultaneously discharge air, thus allowing the indoor unit 10 to discharge a large volume of air forward and downward. Alternatively, when the front air guide plate 500 is in the open position and the bottom air guide plate 600 is in the closed position, only the front air outlet 151 discharges air, allowing the indoor unit 10 to discharge air forward. When the front air guide plate 500 is in the closed position and the bottom air guide plate 600 is in the open position, only the bottom air outlet 152 discharges air, allowing the indoor unit 10 to discharge air downward.

[0074] Therefore, the positions of the front air guide plate 500 and the bottom air guide plate 600 of the air conditioner indoor unit 10 of this utility model can be combined in a variety of ways, realizing free combination and adjustment of different air volumes and different air directions. This allows the air conditioner indoor unit 10 to have diversified air supply modes such as large air volume air supply forward and downward, air supply forward, and air supply downward, while effectively increasing the air supply range and further optimizing the air supply effect, thereby improving the user experience.

[0075] Those skilled in the art will understand that, in some alternative embodiments, the air conditioner indoor unit 10 of this invention can be a wall-mounted air conditioner indoor unit. Of course, in other alternative embodiments, the air conditioner indoor unit 10 of this invention can also be a floor-standing air conditioner indoor unit.

[0076] Those skilled in the art should also understand that the terms "front," "rear," "upper," "lower," "top," "bottom," "left," "right," "inner," and "outer" used in the embodiments of this utility model indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0077] Furthermore, in the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. 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 be further included.

[0078] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can 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 recognized as covering all such other variations or modifications.

Claims

1. An indoor unit for an air conditioner, characterized in that... include: The housing has an air inlet and an air outlet that are spaced apart in a front-to-back direction; At least one axial flow fan is disposed within the housing to direct airflow entering the housing from the inlet through the outlet, and the central axis of each axial flow fan is inclined relative to the vertical direction of the housing, so that the axial flow fan discharges air downwards at an angle; and A heat exchanger is disposed inside the housing, located between the axial flow fan and the air outlet, and is used to exchange heat with the airflow blown out by the axial flow fan.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The indoor unit of the air conditioner includes a plurality of axial flow fans, which are spaced apart in the left-right direction of the housing so that the airflow inside the housing is tilted and blown downward under the action of the plurality of axial flow fans.

3. The indoor unit of the air conditioner according to claim 2, characterized in that, The tilt angle of the central axis of each axial fan relative to the vertical direction of the housing is selected from any value between 0.5° and 29°.

4. The indoor unit of the air conditioner according to claim 2, characterized in that, The indoor unit of the air conditioner also includes: A fan housing is disposed within the housing and located between the axial fan and the heat exchanger, for guiding the airflow blown out by the axial fan toward the heat exchanger.

5. The indoor unit of the air conditioner according to claim 4, characterized in that, The fan housing includes a plurality of flow guides arranged in the left-right direction of the housing. Each of the flow guides is arranged in a one-to-one correspondence with a plurality of axial flow fans. Each flow guide defines an air outlet cavity corresponding to the axial flow fan between itself and the heat exchanger, so that the air outlet cavities of the plurality of axial flow fans are separated.

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The air outlet cavity gradually expands from back to front to guide the airflow blown by the axial fan to flow evenly to the heat exchanger.

7. The indoor unit of the air conditioner according to claim 1, characterized in that, The heat exchanger is flat and inclined relative to the shell in the vertical direction, and an air outlet space is defined between the side of the heat exchanger away from the axial fan and the shell.

8. The indoor unit of the air conditioner according to claim 1, characterized in that, The heat exchanger is a flat plate extending vertically, and the dimension of the heat exchanger in the vertical direction of the housing is larger than the dimension of the axial flow fan in the vertical direction of the housing.

9. The indoor unit of the air conditioner according to claim 1, characterized in that, The rotation direction of each axial fan is opposite to that of the adjacent axial fan, so that the airflow blown by the plurality of axial fans converges in front of the housing.

10. The indoor unit of the air conditioner according to claim 1, characterized in that, The housing includes a rear cover, an air outlet frame, and a front panel arranged sequentially in the front-to-back direction. The air inlet is located on the rear cover, and the air outlet is located at the bottom of the air outlet frame and / or the lower part of the front panel.

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