Fan components and duct units

Abstract

This invention provides a fan assembly and a ducted air conditioner. The fan assembly includes a fan blade side cover; at least two blades; and a blade drive device. The fan assembly and ducted air conditioner provided by this invention utilize the blade drive device to move the blades between a first orientation and a second orientation, ensuring airflow under different air outlet conditions. This guarantees the heat exchange efficiency of the ducted air conditioner, effectively overcoming the problem in existing ducted air conditioners where heat exchange efficiency is high in cooling mode but low in heating mode. This allows the ducted air conditioner to achieve waterfall-style cooling and rapid heating, improving the user experience.

Description

Technical Field

[0001] This utility model relates to the field of air handling equipment technology, and in particular to a fan assembly and duct unit. Background Technology

[0002] Traditional ducted air conditioners have their air inlets located at the bottom and outlets at the sides. Due to the significant vertical distance between the outlets and the ground, during heating operation, hot air from the side outlets tends to accumulate at the ceiling, while denser, cooler air remains in the lower part of the room, resulting in thermal stratification and poor heating performance. This non-uniform airflow distribution leads to a pronounced temperature stratification within the room, significantly reducing user comfort and increasing the heat exchange load on the air conditioning system, thus prolonging the temperature adjustment time.

[0003] To address the aforementioned issues, existing technologies employ a fan that rotates in both directions to drive the gas. During heating operation, the air vents at the bottom of the duct unit deliver hot air directly to the floor of the room, ensuring that the hot air reaches the lower part of the room and improving the heating effect. During cooling operation, the air vents on the side of the duct unit deliver cold air as far as possible from the far end of the room, where its density allows it to sink, thus improving the cooling effect.

[0004] However, in existing technology, the blades inside the fan are all fixed. When it rotates forward, it can supply 100% of the air volume. When it rotates in reverse, the air volume can only reach a portion of the forward rotation. When the ducted air conditioner is cooling, the fan rotates forward, which causes the air volume to be greatly reduced when the ducted air conditioner is heating, which still affects the heat exchange efficiency of the ducted air conditioner. Utility Model Content

[0005] In order to solve the technical problem that the fixed setting of the fan blades in the prior art affects the heat exchange efficiency of the duct air conditioner, a fan assembly and duct air conditioner with adjustable blade orientation to ensure fan air volume and improve heat exchange efficiency are provided.

[0006] A wind turbine assembly, comprising: The number of fan blade side covers is at least two, and there is an installation gap between each two fan blade side covers; At least two blades, all of which are arranged in a ring around the axis of the fan blade side cover within the installation spacing, and each of the blades is rotatable relative to the fan blade side cover. The blade drive device has a first air outlet state and a second air outlet state. When the fan assembly is in the first air outlet state, the blade is in a first orientation. When the fan assembly is in the second air outlet state, the blade is in a second orientation. The blade drive device can drive the blade to rotate so that the blade switches between the first orientation and the second orientation.

[0007] The blade driving device includes a first driving part and a second driving part. The first driving part can cooperate with the blade to move the blade from the second orientation to the first orientation, and the second driving part can cooperate with the blade to move the blade from the first orientation to the second orientation.

[0008] The first driving part and / or the second driving part are electromagnetic structures, and the blade is provided with a magnetic coupling member, so that the first driving part and / or the second driving part can magnetically engage with the magnetic coupling member.

[0009] The side cover of the blade is provided with a limiting structure. When the blade is in the first orientation or the second orientation, the blade is limited and engaged with the limiting structure.

[0010] The limiting structure includes a limiting post, which is disposed on the side of the fan blade side cover facing the installation spacing, and the side of the blade can abut against the limiting post.

[0011] The blade has a curved cross-section, and the opening of the curved surface of the blade faces the limiting post. When the blade is in the first orientation, the first end of the blade abuts against the limiting post. When the blade is in the second orientation, the second end of the blade abuts against the limiting post.

[0012] The fan assembly also includes a volute, and the fan blade side cover, the blades, and the blade drive device are all disposed inside the volute. The volute has a first air inlet and a second air inlet. When the fan assembly is in the first air outlet state, the first air inlet serves as the air outlet and the second air inlet serves as the air inlet. When the fan assembly is in the second air outlet state, the first air inlet serves as the air inlet and the second air inlet serves as the air outlet.

[0013] The fan assembly is applied to the duct air conditioner, with the first air outlet facing the side of the duct air conditioner and the second air outlet facing the bottom of the duct air conditioner.

[0014] The ducted air conditioner has a cooling mode and a heating mode. When the ducted air conditioner is in the cooling mode, the fan assembly switches to the first air outlet state; when the ducted air conditioner is in the heating mode, the fan assembly switches to the second air outlet state.

[0015] The fan assembly also includes a wind direction drive device, which is connected to the volute and can drive the volute to rotate to adjust the orientation of the first air outlet and the second air outlet.

[0016] A ducted air handling unit includes the aforementioned fan assembly.

[0017] The fan assembly and duct air conditioner provided by this utility model utilize a blade drive device to move the blades between a first orientation and a second orientation, ensuring airflow in different air outlet states and thus guaranteeing the heat exchange efficiency of the duct air conditioner. This effectively overcomes the problem in the prior art where the duct air conditioner has high heat exchange efficiency in cooling mode but low heat exchange efficiency in heating mode, enabling the duct air conditioner to achieve waterfall-style cooling and rapid heating, thereby improving the user experience. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the fan assembly provided in an embodiment of the present utility model; Figure 2 A cross-sectional view of a fan assembly provided in an embodiment of this utility model; Figure 3 Another cross-sectional view of the fan assembly provided in this embodiment of the utility model; Figure 4 for Figure 3 A partial schematic diagram of point A; Figure 5 Another cross-sectional view of the fan assembly provided in this embodiment of the utility model; Figure 6 for Figure 5 A partial schematic diagram of point B; Figure 7 A schematic diagram of the fan blade side cover, blade, first drive unit, second drive unit, and limiting structure provided for an embodiment of this utility model; Figure 8 A schematic diagram of the fan blade side cover, blade, and limiting structure provided in an embodiment of this utility model; Figure 9 This is a structural schematic diagram of the ductwork machine provided in an embodiment of the present utility model; Figure 10 A side sectional view of the duct machine provided in an embodiment of this utility model; In the picture: 1. Fan blade side cover; 2. Blade; 31. First drive unit; 32. Second drive unit; 4. Limiting structure; 21. First section; 22. Second section; 23. Third section; 24. Swing shaft; 5. Volute; 51. First air outlet; 52. Second air outlet; 6. Housing; 7. Fan mounting plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Existing technology uses a fan that rotates in both directions to drive the gas. During heating, the air vents at the bottom of the duct unit deliver hot air directly to the floor of the room, ensuring the hot air reaches the lower part and improving heating efficiency. During cooling, air vents on the sides of the duct unit deliver cold air as far as possible into the room, where its density allows it to sink, improving cooling efficiency. However, the blades in existing fans are fixed. When rotating forward, they deliver 100% airflow, but when rotating in reverse, the airflow is only a fraction of that during forward rotation. When the fan rotates forward during cooling, the airflow is significantly reduced during heating, still impacting the heat exchange efficiency of the duct unit.

[0025] Therefore, this application provides a method such as Figures 1 to 10 The fan assembly shown includes: a blade side cover 1, wherein there are at least two blade side covers 1, and there is an installation gap between each pair of blade side covers 1; at least two blades 2, all of which are arranged in a ring around the axis of the blade side cover 1 within the installation gap, and each blade 2 is rotatable relative to the blade side cover 1; and a blade drive device. The fan assembly has a first air outlet state and a second air outlet state. When the fan assembly is in the first air outlet state, the blades 2 are in a first orientation. When the fan assembly is in the second air outlet state, the blades 2 are in a second orientation. The blade drive device can drive the blades 2 to rotate so that the blades 2 switch between the first orientation and the second orientation. By using a blade drive device to move the blades 2 between the first and second orientations, the air volume can be guaranteed in different air outlet states of the fan assembly, thereby ensuring the heat exchange efficiency of the duct air conditioner. This effectively overcomes the problem in the existing technology that the duct air conditioner has high heat exchange efficiency in cooling mode but low heat exchange efficiency in heating mode, enabling the duct air conditioner to achieve waterfall-style cooling and rapid heating, thus improving the user experience.

[0026] The fan assembly also includes a rotating shaft, with the fan blade side cover 1 mounted on the rotating shaft and all the blades 2 connected to the fan blade side cover 1. At this time, the axis of the fan blade side cover 1 is the axis of the rotating shaft, and all the blades 2 are also arranged in a ring around the axis of the rotating shaft. The rotation of the rotating shaft can simultaneously drive the fan blade side cover 1 and all the blades 2 to rotate, thereby using the rotation of the blades 2 to drive the gas and achieve the effect of air delivery.

[0027] The first air outlet state and the second air outlet state of the fan assembly refer to the fan assembly venting air in different directions. The fan assembly also includes a power component that drives the rotating shaft to rotate. When the fan assembly is in the first air outlet state, the power component drives the rotating shaft to rotate clockwise, while when the fan assembly is in the second air outlet state, the power component drives the rotating shaft to rotate counterclockwise.

[0028] The first and second orientations of blade 2 refer to the tilt angles of blade 2 relative to the fan blade side cover 1. When the cross-section of blade 2 is arc-shaped or curved, it refers to the direction in which the arc-shaped opening or the curved opening faces. By adjusting the orientation of blade 2, blade 2 is always at a suitable angle to match the forward and reverse rotation of the shaft, thereby ensuring the driving effect of the fan assembly on the airflow and effectively ensuring the air volume of the fan assembly under different air outlet conditions.

[0029] In one embodiment, the blade driving device includes a first driving part 31 and a second driving part 32. The first driving part 31 can cooperate with the blade 2 to move the blade 2 from the second orientation to the first orientation, and the second driving part 32 can cooperate with the blade 2 to move the blade 2 from the first orientation to the second orientation. By using the first driving part 31 and the second driving part 32 to drive the blade 2 to move in different directions, the blade 2 can be reliably switched to the first orientation or the second orientation.

[0030] Specifically, when the first driving unit 31 drives the blade 2 to move, the second driving unit 32 disengages from the blade 2 or the driving force of the first driving unit 31 on the blade 2 exceeds the driving force of the second driving unit 32 on the blade 2, thereby avoiding interference with the movement of the blade 2 by the second driving unit 32; similarly, when the second driving unit 32 drives the blade 2 to move, the first driving unit 31 disengages from the blade 2 or the driving force of the second driving unit 32 on the blade 2 exceeds the driving force of the first driving unit 31 on the blade 2, thereby avoiding interference with the movement of the blade 2 by the first driving unit 31.

[0031] Optionally, the first driving unit 31 is an electromagnetic structure, and the blade 2 is provided with a magnetic coupling component. The first driving unit 31 can magnetically engage with the magnetic coupling component. When the first driving unit 31 needs to drive the blade 2, it is energized to generate a magnetic force. The first driving unit 31 can attract the magnetic coupling component on the blade 2, thereby driving the blade 2 and realizing the movement of the blade 2. The second driving unit 32 can be other driving structures, such as a spring. When the first driving unit 31 is de-energized, the spring will keep the blade 2 in a second orientation. When the first driving unit 31 is energized, the attraction force between the first driving unit 31 and the magnetic coupling component exceeds the spring force, thereby causing the blade 2 to move in the first orientation, achieving the purpose of driving the blade 2 to move.

[0032] Of course, the second drive unit 32 can also be detached from the blade 2. When the first drive unit 31 is powered on, the attraction force between the first drive unit 31 and the magnetic coupling member can directly drive the blade 2 to move. At this time, there is no need to overcome the driving force of the second drive unit 32 on the blade 2, thus ensuring the reliability of the movement of the blade 2.

[0033] Alternatively, the second driving part 32 is an electromagnetic structure, and a magnetic coupling member is provided on the blade 2. The second driving part 32 can magnetically engage with the magnetic coupling member. When the second driving part 32 needs to drive the blade 2, the second driving part 32 is energized to generate magnetic force. The second driving part 32 can attract the magnetic coupling member on the blade 2, thereby driving the blade 2 and realizing the movement of the blade 2.

[0034] The first driving part 31 can be other driving structures, such as a spring. When the second driving part 32 is de-energized, the spring will keep the blade 2 in the first orientation. When the second driving part 32 is energized, the attraction force between the second driving part 32 and the magnetic coupling component exceeds the elastic force of the spring, thereby enabling the blade 2 to move in the second orientation, thus achieving the purpose of driving the blade 2 to move.

[0035] Of course, the first drive unit 31 can also be detached from the blade 2. When the second drive unit 32 is powered on, the attraction force between the second drive unit 32 and the magnetic coupling member can directly drive the blade 2 to move. At this time, there is no need to overcome the driving force of the second drive unit 32 on the blade 2, thus ensuring the reliability of the movement of the blade 2.

[0036] Alternatively, both the first driving unit 31 and the second driving unit 32 are electromagnetic structures, and the blade 2 is provided with a magnetic coupling member. Both the first driving unit 31 and the second driving unit 32 can magnetically engage with the magnetic coupling member. When the first driving unit 31 needs to drive the blade 2, it is energized to generate a magnetic force, which allows the first driving unit 31 to attract the magnetic coupling member on the blade 2, thereby driving the blade 2 and realizing its movement. When the second driving unit 32 needs to drive the blade 2, it is energized to generate a magnetic force, which allows the second driving unit 32 to attract the magnetic coupling member on the blade 2, thereby driving the blade 2 and realizing its movement.

[0037] When the first drive unit 31 is powered on, the magnetic force of the first drive unit 31 drives the blade 2, and the second drive unit 32 is de-energized. At this time, the second drive unit 32 and the blade 2 are disconnected from each other. Similarly, when the second drive unit 32 is powered on, the magnetic force of the second drive unit 32 drives the blade 2, and the first drive unit 31 is de-energized. At this time, the second drive unit 32 and the blade 2 are disconnected from each other.

[0038] The magnetic mating parts on the blade 2 are made of magnetizable materials, preferably magnetizable metal materials such as iron or copper.

[0039] The fan blade side cover 1 is provided with a limiting structure 4. When the blade 2 is in the first orientation or the second orientation, the blade 2 is limited and engaged with the limiting structure 4. By using the limiting structure 4 to limit the blade 2, the blade 2 will not continue to move when it reaches the first orientation or the second orientation. When the fan assembly is working, the blade 2 can be reliably fixed in the first orientation or the second orientation, which can reliably drive the gas and avoid the problem of the blade 2 moving due to gas resistance, thereby improving the reliability of the fan assembly.

[0040] Optionally, the limiting structure 4 includes a limiting post, which is disposed on the side of the fan blade side cover 1 facing the installation spacing, and the side of the blade 2 can abut against the limiting post. By using the limiting post to abut against the side of the blade 2, further movement of the blade 2 can be suppressed. Simultaneously, due to the driving force of the first driving unit 31 or the second driving unit 32 on the blade 2, the blade 2 can maintain its movement towards the limiting post. Taking the first drive unit 31 driving the blade 2 as an example, the blade 2 is driven by the first drive unit 31 to switch to the first orientation. When the blade 2 reaches the first orientation, the side of the blade 2 abuts against the limiting post. At this time, the first drive unit 31 can no longer drive the blade 2 to continue moving. At the same time, the first drive unit 31 can also keep the blade 2 from moving when it is subjected to the resistance of the gas, thereby ensuring the reliability of the blade 2 in the first orientation, and thus ensuring the reliability of the fan assembly. Similarly, when the second drive unit 32 drives the blade 2, the blade 2 is driven by the second drive unit 32 to switch to the second orientation. When the blade 2 reaches the second orientation, the side of the blade 2 abuts against the limiting post. At this time, the second drive unit 32 can no longer drive the blade 2 to continue moving. At the same time, the second drive unit 32 can also keep the blade 2 from moving when it is subjected to the resistance of the gas, thereby ensuring the reliability of the blade 2 in the second orientation, and thus ensuring the reliability of the fan assembly.

[0041] like Figure 4 and 6 As shown, the cross-section of the blade 2 is curved, and the opening of the curved surface of the blade 2 faces the limiting post. When the blade 2 is in the first orientation, the first end of the blade 2 abuts against the limiting post. When the blade 2 is in the second orientation, the second end of the blade 2 abuts against the limiting post. That is, the blade 2 swings on one side of the limiting post to achieve adjustment between the first orientation and the second orientation.

[0042] Specifically, the blade 2 includes a first segment 21, a second segment 22, and a third segment 23 arranged sequentially. The first segment 21 constitutes the first end of the blade 2, and the third segment 23 constitutes the second end of the blade 2. The second segment 22 is provided with a swing shaft 24 for the blade 2 to swing. The blade 2 is connected to the fan blade side cover 1 through this swing shaft 24. The swing shaft 24 enables the blade 2 to switch between a first orientation and a second orientation. The limiting post is located on one side of the swing shaft 24, and the distance between the limiting post and the swing shaft 24 is less than the sum of the length of the first segment 21 and the distance between the first segment 21 and the swing shaft 24, and also less than the sum of the length of the third segment 23 and the distance between the third segment 23 and the swing shaft 24, thereby ensuring the reliability of the contact and cooperation between the first segment 21 and the third segment 23 and the limiting post.

[0043] Preferably, the curved opening of blade 2 is always oriented in the same direction as the rotation of the shaft, at which point the air delivery effect of the fan assembly is optimal.

[0044] The fan assembly also includes a volute 5. The blade side cover 1, the blades 2, and the blade drive device are all disposed within the volute 5. The volute 5 has a first air inlet 51 and a second air inlet 52. When the fan assembly is in the first air outlet state, the first air inlet 51 serves as the air outlet and the second air inlet 52 serves as the air inlet. When the fan assembly is in the second air outlet state, the first air inlet 51 serves as the air inlet and the second air inlet 52 serves as the air outlet. The volute 5 rectifies the airflow generated during the rotation of the blades 2, and the first air inlet 51 and the second air inlet 52 control the direction of the airflow, thereby ensuring the reliability of the fan assembly's air inlet and outlet.

[0045] The fan assembly is applied to a ducted air conditioner. The first air outlet 51 faces the side of the ducted air conditioner, and the second air outlet 52 faces the bottom of the ducted air conditioner. When the first air outlet 51 discharges air, it can achieve lateral air supply to the ducted air conditioner, and when the second air outlet 52 supplies air, it can achieve downward air supply to the ducted air conditioner.

[0046] Specifically, the ducted air conditioner has a cooling mode and a heating mode. When the ducted air conditioner is in the cooling mode, the fan assembly switches to the first air outlet state. At this time, the first air outlet 51 serves as the air outlet, and the cold air generated by the ducted air conditioner can be blown out from the side of the ducted air conditioner. The cold air can flow along the ceiling of the room and flow downward under its own gravity, thereby achieving waterfall-style cooling. When the ducted air conditioner is in the heating mode, the fan assembly switches to the second air outlet state. At this time, the second air outlet 52 serves as the air outlet, and the hot air generated by the ducted air conditioner can be blown out from the bottom of the ducted air conditioner. The hot air can quickly reach the bottom of the room, ensuring that the hot air is delivered to the lower half of the room, effectively improving the heat exchange efficiency of the ducted air conditioner and the user experience.

[0047] To further improve the air delivery effect of the ducted air conditioner, the fan assembly also includes an airflow direction drive device. This device is connected to the volute 5 and can rotate the volute 5 to adjust the orientation of the first air outlet 51 and the second air outlet 52. The airflow direction drive device can further adjust the orientation of the first air outlet 51 and the second air outlet 52 by adjusting the position of the volute 5. For example, when the ducted air conditioner is in cooling mode, the first air vent 51 can be tilted further towards the ceiling to increase the ability of cold air to adhere to the ceiling and flow, thereby improving the air delivery distance of the cold air and the waterfall-style cooling effect. When the ducted air conditioner is in heating mode, the second air vent 52 can be adjusted as vertically as possible to reduce the distance that hot air has to travel from the second air vent 52 to the ground, so that the hot air can reach the ground quickly and improve the heating effect.

[0048] The ducted air conditioner also includes a housing 6 and a fan mounting plate 7. The fan assembly is rotatably mounted on the housing 6 via a volute bracket. The fan mounting plate 7 is mounted on the housing 6 and divides the interior of the housing 6 into a fan chamber and a heat exchange chamber. The fan assembly is located in the fan chamber, and a heat exchanger is installed in the heat exchange chamber. The first air outlet 51 on the volute 5 passes through the fan mounting plate 7 and extends into the heat exchange chamber, while the second air outlet 52 is located on the bottom surface of the housing 6.

[0049] Since the volute 5 can rotate under the drive of the airflow direction drive device, the fan mounting plate 7 is provided with a clearance area to avoid the first air outlet 51. Furthermore, in order to ensure the sealing between the fan chamber and the heat exchange chamber, a sealing structure that can be adjusted as the first air outlet 51 moves is provided at the clearance area, avoiding unnecessary circulation inside the ducted air conditioner and further improving the heat exchange efficiency of the ducted air conditioner.

[0050] The number of fan components can be two, and the two fan components are coaxially arranged in the fan cavity. The wind direction drive device is located between the two fan components, and the wind direction drive device can drive the two fan components at the same time.

[0051] Preferably, the wind direction drive device includes a linear motor.

[0052] A ducted air handling unit includes the aforementioned fan assembly.

[0053] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fan assembly, characterized in that: include: The number of the fan blade side cover (1) is at least two, and there is an installation gap between each two fan blade side covers (1); At least two blades (2), all of the blades (2) are arranged in a ring around the axis of the fan blade side cover (1) within the installation spacing, and each blade (2) can rotate relative to the fan blade side cover (1); The blade drive device has a first air outlet state and a second air outlet state. When the fan assembly is in the first air outlet state, the blade (2) is in a first orientation. When the fan assembly is in the second air outlet state, the blade (2) is in a second orientation. The blade drive device can drive the blade (2) to rotate so that the blade (2) switches between the first orientation and the second orientation.

2. The fan assembly of claim 1, wherein: The blade drive device includes a first drive unit (31) and a second drive unit (32). The first drive unit (31) can cooperate with the blade (2) to move the blade (2) from the second orientation to the first orientation, and the second drive unit (32) can cooperate with the blade (2) to move the blade (2) from the first orientation to the second orientation.

3. The fan assembly of claim 2, wherein: The first driving part (31) and / or the second driving part (32) are electromagnetic structures, and a magnetic coupling member is provided on the blade (2). The first driving part (31) and / or the second driving part (32) can magnetically engage with the magnetic coupling member.

4. The fan assembly of claim 1, wherein: The side cover (1) of the wind blade is provided with a limiting structure (4). When the blade (2) is in the first orientation or in the second orientation, the blade (2) is limited and engaged with the limiting structure (4).

5. The fan assembly of claim 4, wherein: The limiting structure (4) includes a limiting post, which is disposed on the side of the fan blade side cover (1) facing the installation spacing, and the side of the blade (2) can abut against the limiting post.

6. The fan assembly of claim 5, wherein: The blade (2) has a curved surface in cross section, and the curved surface opening of the blade (2) faces the limiting post. When the blade (2) is in the first orientation, the first end of the blade (2) abuts against the limiting post. When the blade (2) is in the second orientation, the second end of the blade (2) abuts against the limiting post.

7. The fan assembly of claim 1, wherein: The fan assembly also includes a volute (5), the fan blade side cover (1), the blade (2) and the blade drive device are all disposed in the volute (5), the volute (5) has a first air outlet (51) and a second air outlet (52). When the fan assembly is in the first air outlet state, the first air outlet (51) serves as the air outlet and the second air outlet (52) serves as the air inlet; when the fan assembly is in the second air outlet state, the first air outlet (51) serves as the air inlet and the second air outlet (52) serves as the air outlet.

8. The fan assembly of claim 7, wherein: The fan assembly is applied to the duct machine, with the first air outlet (51) facing the side of the duct machine and the second air outlet (52) facing the bottom of the duct machine.

9. The wind turbine assembly according to claim 8, characterized in that: The ducted air conditioner has a cooling mode and a heating mode. When the ducted air conditioner is in the cooling mode, the fan assembly switches to the first air outlet state; when the ducted air conditioner is in the heating mode, the fan assembly switches to the second air outlet state.

10. The fan assembly of claim 7, wherein: The fan assembly also includes a wind direction drive device, which is connected to the volute (5) and can drive the volute (5) to rotate to adjust the orientation of the first air outlet (51) and the second air outlet (52).

11. A ducted fan machine characterised by: Includes the wind turbine assembly as described in any one of claims 1 to 10.

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