An air conditioner indoor unit

Abstract

The utility model provides an air conditioner indoor unit. The air conditioner indoor unit comprises a shell and an air outlet device. The shell has a first air duct for heat exchange airflow blowing. The outlet of the first air duct is a first air outlet. The air outlet device has a second air outlet extending in the transverse direction. The peripheral wall of the air outlet device comprises an arc surface. The axis of the arc surface extends in the transverse direction. The front end of the arc surface is connected to the edge of the second air outlet close to the first air outlet. The end of the lower air duct wall of the first air duct is arranged on the arc surface, or the distance between the end of the lower air duct wall of the first air duct and the arc surface is less than or equal to 10 mm, and the end of the lower air duct wall of the first air duct is arranged in sealing with the arc surface. The air outlet device is rotatably arranged around the axis of the arc surface. The heat exchange airflow flowing out of the first air outlet and the airflow flowing out of the second air outlet can be used for indoor air supply in cooperation. The dual requirements of rapid temperature adjustment and comfortable air supply are met, and the user experience is improved.

Description

Technical Field

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

[0002] Current air conditioner indoor units primarily adjust airflow direction by controlling the relative angle between the air guide vane and the air outlet using a motor or manually. In cooling mode, cold air tends to sink quickly due to gravity, resulting in concentrated airflow and high wind speed near the air outlet, which can cause discomfort from direct airflow onto people. Simultaneously, the rapid downward diffusion of cold air leads to insufficient airflow coverage in farther areas, causing uneven temperature distribution—overly cold near the outlet and slow cooling further away. In heating mode, traditional air guide vane structures struggle to effectively guide hot air, preventing it from rising naturally. Hot air accumulates in the upper part of the room, failing to adequately cover the floor, creating a "hot head, cold feet" sensation that negatively impacts heating comfort and effectiveness. Therefore, current air conditioner indoor units struggle to simultaneously meet the dual needs of rapid temperature adjustment and comfortable airflow, resulting in a poor user experience. Utility Model Content

[0003] In view of the above problems, this utility model is proposed to provide an air conditioner indoor unit that overcomes or at least partially solves the above problems, and can solve the problem that the air conditioner indoor unit is unable to meet the dual needs of rapid temperature adjustment and comfortable air supply, thereby improving the user experience.

[0004] Specifically, this utility model provides an indoor unit for an air conditioner, comprising: The housing has a first air duct for blowing out heat exchange airflow, and the outlet of the first air duct is a first air outlet.

[0005] An air outlet device has a second air outlet extending in a lateral direction. The peripheral wall of the air outlet device includes an arc-shaped surface, the axis of which extends in a lateral direction, and the front end of which is connected to the edge of the second air outlet near the first air outlet.

[0006] The end of the lower air duct wall of the first air duct is disposed on the arc-shaped surface, or the distance between the end of the lower air duct wall of the first air duct and the arc-shaped surface is less than or equal to 10 mm, and the end of the lower air duct wall of the first air duct and the arc-shaped surface are sealed together.

[0007] The air outlet device is rotatably arranged around the axis of the arc-shaped surface.

[0008] Optionally, the cross-section of the downdraft wall at its end is a first cross-section, and the ratio between the distance between the first cross-section and the axis of the arcuate surface and the radius of the arcuate surface is 4 / 5 to 6 / 5.

[0009] Optionally, the indoor unit of the air conditioner also includes: The first air guide plate has two edges extending laterally, namely the first edge and the second edge.

[0010] The width of the first air guide plate is smaller than the width of the first air outlet. The first air guide plate is rotatably disposed inside the first air outlet. The rotation axis of the first air guide plate is spaced apart from both the first edge and the second edge. The first edge can rotate to the front upper, front, front lower, or rear upper of the second edge.

[0011] Optionally, the first air guide plate is flat.

[0012] Optionally, the peripheral wall of the air outlet device is cylindrical, so that the peripheral wall of the air outlet device includes the arcuate surface.

[0013] Optionally, the air outlet device has a second air duct connected to the second air outlet. The end of the upper air duct wall of the second air duct is the edge of the second air outlet near the first air outlet. A fan is installed inside the second air duct.

[0014] Optionally, the indoor unit of the air conditioner also includes: The first cross-flow impeller is disposed inside the housing, and the lower air duct wall of the first air duct has a volute structure that cooperates with the first cross-flow impeller.

[0015] The fan is a second cross-flow impeller, and the upper duct wall of the second air duct has a volute structure that cooperates with the second cross-flow impeller.

[0016] Optionally, an air inlet is also provided on the peripheral wall of the air outlet device, and the air inlet is connected to the second air duct.

[0017] Optionally, the cross-section of the upper air duct wall at its end is the second cross-section, and the cross-section of the arc-shaped surface at the edge of the second air outlet near the first air outlet is the third cross-section.

[0018] The angle between the second cut surface and the third cut surface is 20° to 30°.

[0019] Optionally, there are multiple air outlet devices arranged sequentially along the lateral direction.

[0020] In the indoor unit of this air conditioner, there is no large gap between the lower end of the first air duct wall and the curved surface, so that the heat exchange airflow from the first air outlet and the airflow from the second air outlet can converge on the outside of the indoor unit. The heat exchange airflow from the first air outlet and the airflow from the second air outlet can work together to deliver air into the room, taking into account both the needs of rapid temperature adjustment and comfortable air delivery, thus improving the user experience.

[0021] 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

[0022] 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: Figure 1 This is a schematic cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present utility model; Figure 2 This is a schematic cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present utility model; Figure 3 This is a schematic cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present utility model; Figure 4 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model.

[0023] List of reference numerals in the attached diagram: 100. Housing; 110. First air duct; 120. First air outlet; 200. Air outlet; 210. Second air duct; 220. Second air outlet; 230. Air inlet; 240. Curved surface; 300. First air guide plate; 400. Fan; 500. First cross-flow wind turbine. Detailed Implementation

[0024] The following reference Figures 1 to 4This description pertains to the indoor unit of an air conditioner according to an embodiment of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "multiple" 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 encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0025] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] Figure 1 This is a schematic cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present invention, as shown below. Figure 1 As shown, and refer to Figures 2 to 4 This utility model provides an indoor unit for an air conditioner. The indoor unit includes a housing 100 and an air outlet device 200.

[0029] The housing 100 has a first air duct 110 for blowing out heat exchange airflow, and the outlet of the first air duct 110 is a first air outlet 120.

[0030] The air outlet device 200 has a second air outlet 220 extending in a lateral direction. The peripheral wall of the air outlet device 200 includes an arcuate surface 240, the axis of which extends in a lateral direction. The front end of the arcuate surface 240 is connected to the edge of the second air outlet 220 near the first air outlet 120.

[0031] The end of the lower air duct wall of the first air duct 110 is located on the arc-shaped surface 240, or the distance between the end of the lower air duct wall of the first air duct 110 and the arc-shaped surface 240 is less than or equal to 10 mm, and the end of the lower air duct wall of the first air duct 110 and the arc-shaped surface 240 are sealed together.

[0032] The air outlet device 200 is rotatably mounted around the axis of the arc surface 240.

[0033] In this embodiment, there is no large gap between the lower end of the first air duct 110 and the arc-shaped surface 240, so that the heat exchange airflow from the first air outlet 120 and the airflow from the second air outlet 220 can converge on the outside of the indoor unit of the air conditioner. Furthermore, the outer side of the arc-shaped surface 240 can guide the heat exchange airflow from the first air outlet 120, resulting in differences in the velocity and direction of the airflow reaching various points on the arc-shaped surface 240, thereby achieving a gentle, diffused airflow effect. The air outlet device 200 can rotate around the axis of the arc-shaped surface 240 to adjust the position of the second air outlet 220, thus adjusting the airflow direction of the air outlet device 200. Users can change the airflow direction of the air outlet device 200 according to their airflow needs to improve the user experience. Moreover, the air outlet device also increases the overall air volume of the indoor unit of the air conditioner, which is beneficial for accelerating indoor air circulation.

[0034] For example, such as Figure 2As shown, when a user needs rapid indoor cooling, the air outlet 200 can be controlled to direct the airflow forward and upward, preferably tilted upward at 10°. The air outlet 200 draws in ambient temperature airflow, which then flows out from the second air outlet 220 and converges with the cold air flowing out from the first air outlet 120 at the front of the indoor unit. The ambient temperature airflow flowing out from the second air outlet 220 is below the cold air, supporting the cold air as it flows forward to achieve long-distance air delivery. This improves the uniformity of indoor temperature, slows down the descent of the cold air, enhances the anti-direct-blow effect, and facilitates a shower-like cooling effect, thus improving user comfort.

[0035] like Figure 3 As shown, when a user needs rapid indoor heating, the air outlet 200 can be controlled to direct the airflow downwards and forwards. The air outlet 200 draws in ambient temperature airflow, which then flows out from the second air outlet 220 and merges with the hot air flowing out from the first air outlet 120 at the bottom of the indoor unit. The ambient temperature airflow from the second air outlet 220 carries the hot air downwards, facilitating the rapid landing of the hot air. This improves the heating effect while also enhancing the anti-direct-blow effect, thus improving user comfort.

[0036] The heat exchange airflow from the first air outlet at 120 and the airflow from the second air outlet at 220 can work together to deliver air into the room, taking into account both the needs of rapid temperature regulation and comfortable air delivery, thus improving the user experience.

[0037] In some embodiments of this utility model, the cross-section of the lower air duct wall at its end is a first cross-section, and the ratio between the distance between the first cross-section and the axis of the arc surface 240 and the radius of the arc surface 240 is 4 / 5 to 6 / 5.

[0038] In this embodiment, when the ratio between the distance between the first tangent and the axis of the arc surface 240 and the radius of the arc surface 240 is between 0.8 and 1, the circle containing the cross-section of the arc surface 240 protrudes from the upper end of the first tangent, so that the heat exchange airflow flowing out of the first air outlet 120 and the airflow flowing out of the second air outlet 220 can contact each other in the room and cooperate to deliver air. When the ratio of the distance between the first tangent and the axis of the arc surface 240 to the radius of the arc surface 240 is between 1 and 1.2, there is a certain distance between the first tangent and the arc surface 240 in the direction perpendicular to the first tangent. When the ratio of the distance between the first tangent and the axis of the arc surface 240 to the radius of the arc surface 240 is greater than 1.2, the distance between the arc surfaces 240 in the direction perpendicular to the first tangent is larger. This results in a poor mixing effect between the heat exchange airflow flowing out of the first air outlet 120 and the airflow flowing out of the second air outlet 220. Some airflow is prone to separation and the formation of vortices, which reduces the air supply efficiency.

[0039] In some embodiments of this utility model, such as Figures 1 to 3As shown, the indoor unit of the air conditioner also includes a first air guide plate 300, and the two edges of the first air guide plate 300 extending in the lateral direction are the first edge and the second edge, respectively.

[0040] The width of the first air guide plate 300 is smaller than the width of the first air outlet 120. The first air guide plate 300 is rotatably disposed within the first air outlet 120. The rotation axis of the first air guide plate 300 is spaced apart from both the first edge and the second edge. The first edge can rotate to the front upper, front, front lower, or rear upper position of the second edge. When the first edge is rotated to the front upper position, as... Figure 2 As shown, it can guide the airflow forward and upward. When the first edge is rotated to the front, it can guide the airflow forward. When the first edge is rotated to the front and downward, as... Figure 1 As shown, this guides the airflow forward and downward. When the first edge is rotated to the upper rear, as... Figure 3 As shown, it can guide the airflow downwards.

[0041] In some embodiments of this utility model, such as Figures 1 to 3 As shown, the first air guide plate 300 is flat. The flat plate structure is easy to manufacture and inexpensive. When airflow needs to be guided, the flat plate first air guide plate 300 can effectively guide the airflow. When it is necessary to minimize obstruction to the airflow, the plate surface can be rotated to be parallel to the airflow direction, thus minimizing wind resistance.

[0042] In some embodiments of this utility model, such as Figures 1 to 3 As shown, the peripheral wall of the air outlet device 200 is cylindrical, such that the peripheral wall of the air outlet device 200 includes an arcuate surface 240. The arcuate surface 240 is part of the cylindrical surface formed by the cylindrical peripheral wall. The cylindrical peripheral wall requires minimal space when rotating about the axis of the arcuate surface 240, making the structure of the air conditioner indoor unit more compact and reducing the room space occupied by the overall air conditioner indoor unit.

[0043] Preferably, the diameter of the cylindrical peripheral wall is 70 mm.

[0044] In some embodiments of this utility model, such as Figures 1 to 3 As shown, the air outlet device 200 has a second air duct 210 connected to the second air outlet 220. The end of the upper air duct wall of the second air duct 210 is the edge of the second air outlet 220 near the first air outlet 120, so as to avoid energy waste when the second air outlet 220 faces backward.

[0045] like Figure 1 As shown, a fan 400 is installed in the second air duct 210, which can adjust the airflow sent from the second air outlet 220 as needed, so that the air outlet device 200 forms an auxiliary air system with active air supply capability.

[0046] In some embodiments of this utility model, such as Figure 1 As shown, the indoor unit of the air conditioner also includes a first cross-flow fan 500, which is disposed inside the housing 100, and the lower air duct wall of the first air duct 110 has a volute structure that cooperates with the first cross-flow fan 500.

[0047] The fan 400 is the second cross-flow impeller, and the upper air duct wall of the second air duct 210 has a volute structure that cooperates with the second cross-flow impeller.

[0048] In this embodiment, the first air duct 110 is used to transport heat exchange airflow, and the second air duct 210 can enhance the local air supply intensity or adjust the airflow direction as needed. The two volute structures in the first air duct 110 and the second air duct 210 are arranged close to each other so that the airflows flowing out from the first air duct 110 and the second air duct 210 respectively can be fully mixed in front of the indoor unit of the air conditioner.

[0049] Preferably, the diameter of the second cross-flow impeller is 40 mm.

[0050] In some embodiments of this utility model, such as Figures 1 to 3 As shown, an air inlet 230 is also provided on the peripheral wall of the air outlet device 200, and the air inlet 230 is connected to the second air duct 210.

[0051] In this embodiment, the air inlet 230 of the air outlet device 200 can be directly connected to the indoor environment. In this case, the built-in second cross-flow fan can function as an independent indoor air circulator. Alternatively, the air inlet 230 can also be designed to connect to the first air duct 110 of the indoor unit of the air conditioner. This allows the air outlet device 200 to introduce heat exchange air.

[0052] In some embodiments of this utility model, the cross-section of the upper air duct wall of the second air duct 210 at its end is the second cross-section, and the cross-section of the arc-shaped surface 240 at the edge of the second air outlet 220 near the first air outlet 120 is the third cross-section.

[0053] The angle between the second and third cut surfaces is 20° to 30°.

[0054] In this embodiment, when the angle between the second and third cut surfaces is less than 20°, a section at the end of the upper duct wall of the second air duct 210 is too close to the curved surface 240, which makes it difficult to guide the airflow and easily causes turbulence, affecting the air delivery efficiency. When the angle between the second and third cut surfaces is greater than 30°, a section at the end of the upper duct wall of the second air duct 210 is too far from the curved surface 240, resulting in a small cross-sectional area of ​​the second air duct 210, which also affects the air delivery efficiency.

[0055] In some embodiments of this utility model, such as Figure 4 As shown, there are multiple air outlet devices 200, arranged sequentially along the horizontal direction.

[0056] In this embodiment, each air outlet device 200 can be independently rotated around the axis of its arc surface 240, so that the air volume and air delivery direction of each air outlet device can be set to meet different user needs. For example, the air outlet device 200 in unoccupied areas can be turned off to save energy, or the air delivery direction of different air outlet devices can be adjusted to make the indoor temperature more uniform.

[0057] Preferably, in some embodiments of this utility model, there are two air outlet devices 200, which are arranged adjacent to each other in the lateral direction.

[0058] 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 a first air duct for blowing out heat exchange airflow, and the outlet of the first air duct is a first air outlet. An air outlet device has a second air outlet extending in a lateral direction. The peripheral wall of the air outlet device includes an arc-shaped surface, the axis of which extends in a lateral direction, and the front end of which is connected to the edge of the second air outlet near the first air outlet. The end of the lower air duct wall of the first air duct is disposed on the arc-shaped surface, or the distance between the end of the lower air duct wall of the first air duct and the arc-shaped surface is less than or equal to 10 mm, and the end of the lower air duct wall of the first air duct and the arc-shaped surface are sealed together. The air outlet device is rotatably arranged around the axis of the arc-shaped surface.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The cross-section of the downdraft wall at its end is a first cross-section, and the ratio between the distance between the first cross-section and the axis of the arcuate surface and the radius of the arcuate surface is 4 / 5 to 6 / 5.

3. The indoor unit of the air conditioner according to claim 1, characterized in that, Also includes: The first air guide plate has two edges extending laterally, namely the first edge and the second edge. The width of the first air guide plate is smaller than the width of the first air outlet. The first air guide plate is rotatably disposed inside the first air outlet. The rotation axis of the first air guide plate is spaced apart from both the first edge and the second edge. The first edge can rotate to the front upper, front, front lower, or rear upper of the second edge.

4. The indoor unit of the air conditioner according to claim 3, characterized in that, The first air guide plate is flat.

5. The indoor unit of the air conditioner according to claim 1, characterized in that, The peripheral wall of the air outlet device is cylindrical, so that the peripheral wall of the air outlet device includes the arc-shaped surface.

6. The indoor unit of the air conditioner according to claim 1, characterized in that, The air outlet device has a second air duct connected to the second air outlet; the end of the upper air duct wall of the second air duct is the edge of the second air outlet near the first air outlet; a fan is installed in the second air duct.

7. The indoor unit of the air conditioner according to claim 6, characterized in that, Also includes: The first cross-flow impeller is disposed inside the housing, and the lower air duct wall of the first air duct has a volute structure that cooperates with the first cross-flow impeller. The fan is a second cross-flow impeller, and the upper duct wall of the second air duct has a volute structure that cooperates with the second cross-flow impeller.

8. The indoor unit of the air conditioner according to claim 7, characterized in that, An air inlet is also provided on the peripheral wall of the air outlet device, and the air inlet is connected to the second air duct.

9. The indoor unit of the air conditioner according to claim 6, characterized in that, The cross-section of the upper air duct wall at its end is the second cross-section, and the cross-section of the arc-shaped surface at the edge of the second air outlet near the first air outlet is the third cross-section. The angle between the second cut surface and the third cut surface is 20° to 30°.

10. The indoor unit of the air conditioner according to claim 1, characterized in that, There are multiple air outlet devices, arranged sequentially along the horizontal direction.

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