Air conditioner and control method thereof

Abstract

The invention belongs to the technical field of air conditioners, and relates to an air conditioner and a control method thereof. The air conditioner comprises an air outlet and an air deflector assembly arranged at the air outlet. The air deflector assembly comprises a first air deflector which is rotatably installed on the periphery of the air outlet and is provided with a first closing position used for closing a part of area of the air outlet and a first opening position used for opening a part of area of the air outlet; the second air guide plate is rotatably mounted on the periphery of the air outlet and is provided with a second closing position for closing the other part of the area of the air outlet and a second opening position for opening the other part of the area of the air outlet; and the third air guide plate is rotatably mounted in the air outlet and is provided with an attaching position attached to the inner wall of the air outlet and an unfolding position unfolded on the inner wall of the air outlet. The air guide plates are arranged to be three air guide plates capable of being rotationally adjusted, and flexible adjustment of the air outlet direction is achieved through the synergistic effect of the three air guide plates. An upper air outlet mode facing upwards and a lower air outlet mode facing downwards can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly to an air conditioner and a control method thereof. Background Art

[0002] At present, the problem of direct blowing of cold air by household wall-mounted air conditioners has always been a thorny problem in the industry. Although some products can prevent direct blowing to a certain extent by adjusting the angle of the air deflector, this kind of protection is limited to specific angles and cannot achieve direct-blow prevention throughout the house.

[0003] To solve this problem, air conditioner accessories such as large air deflectors have been introduced in the market. These accessories can alleviate the problem of direct blowing during cooling to a certain extent, but at the same time, they are accompanied by many disadvantages such as a decrease in cooling efficiency, complex installation, and the need to remove the baffle in the heating mode. Summary of the Invention

[0004] The purpose of the present invention is to provide an air conditioner and a control method thereof, aiming to solve the problem of how to be compatible with preventing direct blowing of cold air while maintaining high-efficiency cooling and heating performance of existing air conditioners.

[0005] To solve the above technical problems, the purpose of the present invention is achieved through the following technical solutions: providing an air conditioner, including: an air outlet and a wind deflector assembly disposed at the air outlet; the wind deflector assembly includes: A first wind deflector, rotatably installed around the air outlet, having a first closed position for closing a part of the air outlet area and a first open position for opening a part of the air outlet area; A second wind deflector, rotatably installed around the air outlet, having a second closed position for closing another part of the air outlet area and a second open position for opening another part of the air outlet area; A third wind deflector, rotatably installed inside the air outlet, having a fitting position attached to the inner wall of the air outlet and an unfolded position extended from the inner wall of the air outlet; Wherein, when the first wind deflector rotates to the first open position, the wind deflector assembly forms an upper air outlet duct facing upward; when the second wind deflector rotates to the second open position and the third wind deflector rotates to the unfolded position, the wind deflector assembly forms a lower air outlet duct facing downward.

[0006] Further, when the air outlet is in a fully closed state, one end of the first wind deflector is connected to the upper edge of the periphery of the air outlet, the other end of the first wind deflector abuts against one end of the second wind deflector, and the other end of the second wind deflector abuts against the lower edge of the periphery of the air outlet.

[0007] Further, one end of the first air deflector is rotatably installed on the upper edge of the periphery of the air outlet; when the other end of the first air deflector moves towards the inside of the air outlet, it can reach the first opening position.

[0008] Further, the first air deflector further has an avoidance position for avoiding when the second air deflector moves to the second opening position; When the other end of the first air deflector moves towards the outside of the air outlet, it can reach the avoidance position.

[0009] Further, when the second air deflector moves towards the upper edge of the periphery of the air outlet, it can reach the second opening position; The third air deflector is horizontally installed on the top side of the inner wall of the air outlet. One end of the third air deflector is rotatably installed on the top side of the inner wall of the air outlet. When the other end of the third air deflector rotates and moves downward, it can reach the unfolded position.

[0010] Further, the air deflector assembly further includes: A first driving member, installed inside the air outlet and connected to the first air deflector, the first driving member is used to drive the first air deflector to move to the first closed position, the first opening position or the avoidance position.

[0011] Further, the air deflector assembly further includes: A second driving member, installed inside the air outlet and connected to the second air deflector, the second driving member is used to drive the second air deflector to move to the second closed position or the second opening position.

[0012] Further, the second driving member includes: a second driving motor, a second driving gear and an arc-shaped driven rack; The output shaft of the second driving motor is coaxially connected to the second driving gear, and the inner arc side of the arc-shaped driven rack is meshed and connected to the second driving gear; The inner side of the second air deflector is connected to the outer side of the arc-shaped driven rack.

[0013] Further, the air deflector assembly further includes: A third driving member, installed inside the air outlet and connected to one end of the third air deflector, the third driving member is used to drive the third air deflector to be in the fitting position or the unfolded position.

[0014] An embodiment of the present invention further provides a control method for an air conditioner, which is applied to the air conditioner as described above, including: In response to the upward air outlet mode of the air conditioner, control the first air deflector to move to the first open position; so that the air deflector assembly forms an upward air outlet duct facing upward. In response to the downward air outlet mode of the air conditioner, control the second air deflector to rotate to the second open position, and control the third air deflector to rotate to the unfolded position; so that the air deflector assembly forms a downward air outlet duct facing downward.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: When the air conditioner enables the upward air outlet mode, controlling the first air deflector to move to the first open position can make the air deflector assembly and the inner wall of the air outlet form an upward air outlet duct facing upward, which can ensure that the cold air is evenly and gently dispersed upward, bringing a more comfortable shower-like cooling experience.

[0016] When the air conditioner enables the downward air outlet mode, controlling the second air deflector to rotate to the second open position and controlling the third air deflector to rotate to the unfolded position can make the air deflector assembly and the inner wall of the air outlet form a downward air outlet duct facing downward, ensuring that the hot air can be smoothly guided downward, realizing a carpet-like heating experience in the heating area, and at the same time avoiding the discomfort that may be brought by the hot air blowing directly on the human body.

[0017] Each air deflector of the air deflector assembly is restricted within the boundary of the air outlet during the rotational movement process, effectively preventing excessive displacement to the outside. This design shows a more elegant hidden air outlet effect to the user.

[0018] The above description is only an overview of the technical solution of the present invention. In order to be able to more clearly understand the technical means of the present invention and can be implemented according to the content of the specification, the following takes the preferred embodiments of the present invention and describes in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of the internal structure (closed state) of the air conditioner provided by the embodiment of the present invention; Figure 2 Schematic diagram of the movement of the air deflector assembly of the internal structure (upward air outlet state) of the air conditioner provided by the embodiment of the present invention; Figure 3 Schematic diagram of the cold air flow direction of the internal structure (downward air outlet state) of the air conditioner provided by the embodiment of the present invention; Figure 4 Schematic diagram of the movement of the air deflector assembly of the internal structure (downward air outlet state) of the air conditioner provided by the embodiment of the present invention; Figure 5 Schematic diagram of the hot air flow direction of the internal structure (downward air outlet state) of the air conditioner provided by the embodiment of the present invention; Figure 6 Schematic diagram of the driving principle structure of the first driving member provided by the embodiment of the present invention; Figure 7 Schematic diagram of the driving principle structure of the second driving member provided by the embodiment of the present invention; Figure 8 Schematic diagram of the driving principle structure of the third driving member provided by the embodiment of the present invention; Figure 9 Schematic diagram of the control method flow of the air conditioner provided by the embodiment of the present invention; Explanation of the labels in the figure: 1. Housing; 2. Evaporator; 3. Blower; 4. Bottom case; 5. Panel body; 6. First air deflector; 61. First driving gear; 62. Driven gear; 7. Second air deflector; 71. Second driving gear; 72. Arc-shaped driven rack; 8. Third air deflector; 81. Third driving motor. Detailed implementation manners

[0021] To further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the following combines the drawings and preferred embodiments to describe in detail the specific implementation manners, structures, features and their effects of the present invention application. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0022] In the description of the present invention, it should be clear that the terms "first", "second", etc. in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence; the terms "vertical", "horizontal", "longitudinal", "front", "rear", "left", "right", "up", "down", "horizontal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention, rather than meaning that the device or element referred to must have a specific orientation or position, so it cannot be understood as a limitation to the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Please refer to Figure 1 , an embodiment of the present invention provides an air conditioner, including a housing 1, an evaporator 2, a blower 3, a bottom case 4, a panel body 5, and a wind deflector assembly; the evaporator 2, the blower 3, the bottom case 4, and the panel body 5 are located inside the housing 1, the evaporator 2 is located above the blower 3, the bottom case 4 encloses to form an air outlet below the blower 3, the panel is disposed on the front side of the bottom case 4, and the wind deflector assembly is installed at the air outlet. The cold and hot air passes through the blower 3 and then reaches the air outlet, and is blown out after being guided by the wind deflector assembly.

[0025] Please refer to Figures 1 to 5 , the wind deflector assembly includes: A first wind deflector 6, rotatably installed around the air outlet, having a first closed position for closing a part of the air outlet area and a first open position for opening a part of the air outlet area; A second wind deflector 7, rotatably installed around the air outlet, having a second closed position for closing another part of the air outlet area and a second open position for opening another part of the air outlet area; A third wind deflector 8, rotatably installed inside the air outlet, having a fitting position fitting to the inner wall of the air outlet and an unfolded position unfolded from the inner wall of the air outlet; Wherein, when the first wind deflector 6 rotates to the first open position, the wind deflector assembly forms an upper air outlet duct facing upward ( Figure 3 the arrow direction shown at the air outlet in ); when the second wind deflector 7 rotates to the second open position and the third wind deflector 8 rotates to the unfolded position, the wind deflector assembly forms a lower air outlet duct facing downward ( Figure 5 the arrow direction shown at the air outlet in ).

[0026] In this embodiment, the air guide plate is set as three rotatable and adjustable air guide plates, and the flexible adjustment of the air outlet direction can be achieved through the coordinated action of the three air guide plates. The air guide plate assembly can realize the upper air outlet mode facing upwards and the lower air outlet mode facing downwards. Specifically, the upper air outlet mode is suitable for cooling or air supply, because the cold air is downward, and the upward air outlet of cold air is easy to cool in a shower style, and the cold air does not blow on people; the lower air outlet mode is suitable for heating mode, and the hot air floats upward. Directing the hot air downward can make the hot air more evenly distributed in the lower half of the heating area, thereby improving the heating efficiency and preventing the hot air from blowing directly to the human body and causing discomfort.

[0027] In the design of the present invention, when the air conditioner enables the upper air outlet mode, it is only necessary to control the first air guide plate 6 to move to the first open position (the other air guide plates are in the position when the air conditioner is turned off), so that the air guide plate assembly and the inner wall of the air outlet can form an upper air outlet duct facing upward (specifically, it can be diagonally upward), ensuring that the cold air can be evenly and softly distributed upward, bringing a more comfortable shower-like cooling experience.

[0028] In the design of the present invention, when the air conditioner is in the downwind mode, the second air guide plate 7 needs to be controlled to rotate to the second open position, and the third air guide plate 8 needs to be controlled to rotate to the unfolded position, so that the air guide plate assembly and the inner wall of the air outlet form a downwind air duct facing downward (specifically, it can be diagonally downward), ensuring that the hot air can be smoothly guided downward, achieving a carpet-style heating experience in the heating area, and avoiding the discomfort that may be caused by the hot air blowing directly to the human body. (It should be noted that the first air guide plate 6 needs to be moved to the avoidance position to avoid the second air guide plate 7, see the following description for details).

[0029] In the design of the present invention, each air guide plate of the air guide plate assembly is restricted within the limits of the air outlet during the rotational movement, effectively preventing excessive displacement to the outside. This design presents a more elegant hidden air outlet effect to the user.

[0030] In order to elaborate on the structural features of the air guide plate assembly, the structural design and position layout of the air guide plate assembly will be introduced below for the three states of complete air outlet closure, upper air outlet mode and lower air outlet mode.

[0031] Status 1: See also Figure 2 and Figure 3 In one embodiment, when the air outlet is in a fully closed state (i.e., the air conditioner is turned off), one end of the first air guide plate 6 is connected to the upper edge of the outer periphery of the air outlet, the other end of the first air guide plate 6 is abutted against one end of the second air guide plate 7, and the other end of the second air guide plate 7 is abutted against the lower edge of the outer periphery of the air outlet.

[0032] In this embodiment, when the air conditioner is in the shutdown state, the first air deflector 6 and the second air deflector 7 are used to cooperate to close the air outlet. At this time, the first air deflector 6 is in the first closed position, and the second air deflector 7 is in the second closed position. The shapes of the first air deflector 6 and the second air deflector 7 can be arc-shaped or straight-shaped, and can be specifically designed according to the overall shape of the air conditioner and the air guiding requirements, and it can ensure that the air outlet is completely and tightly closed.

[0033] State two: Please continue to refer to Figure 2 and Figure 3 In one embodiment, one end of the first air deflector 6 is rotatably installed on the upper edge of the periphery of the air outlet; when the other end of the first air deflector 6 moves towards the inside of the air outlet, it can reach the first open position.

[0034] In this embodiment, with one end of the first air deflector 6 as the rotation axis, when controlling the other end to move towards the inside of the air outlet, the first air deflector 6 can reach the first open position. At this time, the area of the upper edge of the periphery of the air outlet is opened, and the first air deflector 6, the second air deflector 7, the third air deflector 8 and the bottom case 4 can form an obliquely upward long air duct (i.e., the upper air outlet duct), which can extend the air supply distance and avoid the air flow blowing directly at the user.

[0035] Furthermore, in order to ensure a good air outlet effect, the distance L1 between the first air deflector 6 and the second air deflector 7 is not less than 50 mm.

[0036] In one embodiment, the first air deflector 6 also has an avoidance position for avoiding the movement of the second air deflector 7 to the second open position; when the other end of the first air deflector 6 moves towards the outside of the air outlet, it can reach the avoidance position.

[0037] In this embodiment, the second open position of the second air deflector 7 is at the upper edge position of the periphery of the air outlet. To avoid interference between the structure of the second air deflector 7 and the first air deflector 6 when the second air deflector 7 moves to the second open position, the first air deflector 6 is designed with an avoidance position. When the second air deflector 7 needs to move to the second open position, the first air deflector 6 can move towards the outside of the air outlet and reach the avoidance position, so as to ensure that the second air deflector 7 can smoothly move to the second open position without conflicting or colliding with the first air deflector 6. This design not only improves the structural flexibility of the air conditioner air supply device, but also ensures that the adjustment of the air supply direction is smoother and unobstructed.

[0038] State three: In one embodiment, the second air guide plate 7 is used to reach the second open position when it moves toward the upper edge of the outer periphery of the air outlet; the third air guide plate 8 is laterally installed on the top side of the inner wall of the air outlet (i.e., the inner top of the bottom shell 4), and one end of the third air guide plate 8 is rotatably installed on the top side of the inner wall of the air outlet, and the third air guide plate 8 is used to reach the unfolded position when the other end of the third air guide plate 8 rotates downward.

[0039] In this embodiment, before moving the second air guide plate 7 to the second open position, the first air guide plate 6 is first moved to the avoidance position, and then the second air guide plate 7 is moved from the second closed position (i.e., the lower edge area of the air outlet) to the second open position. At this time, the area of the lower edge of the outer periphery of the air outlet is opened. At the same time, the third air guide plate 8 is moved from the fitting position to the unfolded position. Thus, the second air guide plate 7, the third air guide plate 8 and the bottom shell 4 can form a long air duct slanting downward (i.e., the lower air outlet duct), which can smoothly guide the hot air downward, thereby realizing a carpet-type heating experience in the heating area. Furthermore, in order to ensure a better air outlet effect, the distance L2 between the second air guide plate 7 and the inner wall of the bottom side of the bottom shell 4 is not less than 50 mm. More specifically, when the third air guide plate 8 is controlled to move back and forth between the fitting position and the unfolded position, the movement angle of the third air guide plate 8 can control the distance L2, thereby achieving heating air supply at different angles (i.e., achieving the adjustment of the inclination angle of downward air supply).

[0040] Based on this, in the above three states of the air conditioner, through the ingenious design and position layout of the air guide plate assembly, the air outlet can be flexibly switched in different modes to meet the user's diverse air supply needs.

[0041] See also Figure 6 As shown, in one embodiment, the air guide plate assembly also includes a first driving member, which is installed inside the air outlet and connected to the first air guide plate 6, and the first driving member is used to drive the first air guide plate 6 to move to a first closed position, a first open position or an avoidance position.

[0042] In this embodiment, the first driving member may include a first driving motor (not shown in the figure), a first driving gear 61 and a driven gear 62. The first driving motor may be installed on the inner walls on both sides of the air outlet. The output shaft of the first driving motor is coaxially connected with the first driving gear 61. The first driving gear 61 is meshed and connected with the driven gear 62. The axis of the driven gear 62 is connected to the shaft of one end of the first air guide plate 6. Thus, the first air guide plate 6 can be switched between the first closed position, the first open position and the avoidance position through the transmission cooperation of the first driving member.

[0043] See also Figure 7As shown, in one embodiment, the air guide plate assembly also includes a second driving member, which is installed inside the air outlet and connected to the second air guide plate 7, and the second driving member is used to drive the second air guide plate 7 to move to a second closed position or a second open position.

[0044] In this embodiment, the second driving member may include a second driving motor (not shown in the figure), a second driving gear 71 and an arc-shaped driven rack 72; the output shaft of the second driving motor is coaxially connected to the second driving gear 71, the inner arc side of the arc-shaped driven rack 72 is meshed and connected to the second driving gear 71; the inner side of the second air deflector 7 is connected to the outer side of the arc-shaped driven rack 72. Thus, the second air deflector 7 can be switched between the second closed position and the second open position through the transmission cooperation of the second driving member.

[0045] See also Figure 8 As shown, in one embodiment, the air guide plate assembly also includes a third driving member, which is installed inside the air outlet and connected to one end of the third air guide plate 8, and the third driving member is used to drive the third air guide plate 8 to a fitted position or an expanded position.

[0046] In this embodiment, the third driving member may include a third driving motor 81, and the output shaft of the third driving motor 81 is connected to one end of the third air guide plate 8. Thus, the third air guide plate 8 can be switched between the fitting position and the unfolded position through the transmission of the third driving member.

[0047] See also Figure 9 , an embodiment of the present invention further provides a control method for an air conditioner, which is applied to the air conditioner as described above, and includes steps S901-S902.

[0048] S901, in response to the upper air outlet mode of the air conditioner, controlling the first air guide plate 6 to move to the first open position, so that the air guide plate assembly forms an upper air outlet duct facing upward; S902. In response to the downward air outlet mode of the air conditioner, control the second air guide plate 7 to rotate to the second open position, and control the third air guide plate 8 to rotate to the unfolded position; so that the air guide plate assembly forms a downward air outlet duct; wherein, before moving the second air guide plate 7 to the second open position, first move the first air guide plate 6 to the avoidance position.

[0049] In this embodiment, according to the operating mode of the air conditioner, by controlling the different moving or rotating states of the first air deflector 6, the second air deflector 7 and the third air deflector 8, the position of the air deflector assembly is flexibly adjusted, thereby realizing the delivery of cold air obliquely upward and the delivery of hot air obliquely downward. Specifically, the upper air outlet mode is suitable for refrigeration or air supply. Since cold air descends, upward air outlet of cold air is easy to achieve shower-like refrigeration without blowing directly on people. The lower air outlet mode is suitable for the heating mode. Since hot air rises, guiding the hot air downward can make the hot air more evenly distributed in the lower half of the heating area, improve the heating efficiency, and at the same time avoid discomfort caused by the hot air blowing directly on the human body.

[0050] In summary, it is easy for those skilled in the art to understand that, on the premise of no conflict, the above-mentioned advantageous technical features can be freely combined and superimposed.

[0051] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An air conditioner, characterized in that, Comprising: An air outlet and a wind deflector assembly disposed at the air outlet; the wind deflector assembly includes: A first wind deflector rotatably mounted around the air outlet, having a first closed position for closing a part of the air outlet area and a first open position for opening a part of the air outlet area; A second wind deflector rotatably mounted around the air outlet, having a second closed position for closing another part of the air outlet area and a second open position for opening another part of the air outlet area; A third wind deflector rotatably mounted inside the air outlet, having a fitting position that fits against the inner wall of the air outlet and an unfolded position that unfolds from the inner wall of the air outlet; Wherein, the wind deflector assembly is configured to form an upper air outlet duct directed upward when the first wind deflector rotates to the first open position; the wind deflector assembly is configured to form a lower air outlet duct directed downward when the second wind deflector rotates to the second open position and the third wind deflector rotates to the unfolded position.

2. The air conditioner according to claim 1, wherein When the air outlet is in a fully closed state, one end of the first wind deflector is connected to the upper edge of the periphery of the air outlet, the other end of the first wind deflector abuts against one end of the second wind deflector, and the other end of the second wind deflector abuts against the lower edge of the periphery of the air outlet.

3. The air conditioner according to claim 1, characterized in that, One end of the first wind deflector is rotatably mounted on the upper edge of the periphery of the air outlet; the first wind deflector is configured to reach the first open position when its other end moves towards the inside of the air outlet.

4. The air conditioner according to claim 3, wherein The first wind deflector further has an avoidance position for avoiding the movement of the second wind deflector to the second open position; The first wind deflector is configured to reach the avoidance position when its other end moves towards the outside of the air outlet.

5. The air conditioner according to claim 1, characterized in that, The second wind deflector is configured to reach the second open position when it moves towards the upper edge of the periphery of the air outlet; The third wind deflector is horizontally mounted on the top side of the inner wall of the air outlet, one end of the third wind deflector is rotatably mounted on the top side of the inner wall of the air outlet, and the third wind deflector is configured to reach the unfolded position when its other end rotates and moves downward.

6. The air conditioner according to claim 4, characterized in that The wind deflector assembly further includes: A first driving member mounted inside the air outlet and connected to the first wind deflector, the first driving member being configured to drive the first wind deflector to move to the first closed position, the first open position or the avoidance position.

7. The air conditioner according to claim 1, characterized in that The wind deflector assembly further includes: A second driving member mounted inside the air outlet and connected to the second wind deflector, the second driving member being configured to drive the second wind deflector to move to the second closed position or the second open position.

8. The air conditioner according to claim 7, characterized in that, The second driving member includes: a second driving motor, a second driving gear and an arc-shaped driven rack; The output shaft of the second driving motor is coaxially connected to the second driving gear, and the inner arc side of the arc-shaped driven rack is meshed and connected to the second driving gear; The inner side of the second wind deflector is connected to the outer side of the arc-shaped driven rack.

9. The air conditioner according to claim 1, characterized in that, The wind deflector assembly further includes: The third driving member is installed inside the air outlet and connected to one end of the third air deflector. The third driving member is configured to drive the third air deflector to the fitting position or the unfolded position.

10. A control method for an air conditioner, applied to the air conditioner according to any one of the above claims 1-9, characterized in that: In response to the upper air outlet mode of the air conditioner, controlling the first air deflector to move to the first opening position; so that the air deflector assembly forms an upper air outlet duct facing upward; In response to the lower air outlet mode of the air conditioner, controlling the second air deflector to rotate to the second opening position, and controlling the third air deflector to rotate to the unfolded position; so that the air deflector assembly forms a lower air outlet duct facing downward.

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