A high-efficiency wind energy conversion device

Abstract

The present application relates to the technical field of wind energy conversion equipment, and in particular to a high-efficiency wind energy conversion device, which includes a rotor assembly, a stator assembly and an air duct assembly, wherein the rotor assembly includes a rotating shaft and a fan blade, the fan blade is sleeved on the rotating shaft and positioned by a first bearing and a second bearing, the air duct assembly is rotatably connected to the rotating shaft through a bearing, and a stator assembly is fixed at one end thereof, and a magnetic ring located in the stator assembly is also sleeved on the rotating shaft, and there is a gap between the magnetic ring and the stator assembly. The present application realizes the effective capture and conversion of wind energy, improves the wind power conversion efficiency, and enhances the stability and reliability of the system.

Description

Technical Field

[0001] The present application relates to the field of wind energy conversion equipment, and in particular to a high-efficiency wind energy conversion device. Background Art

[0002] At present, in the development of wind energy conversion technology, improving wind energy conversion efficiency and device operation stability has always been a key research direction. Wind energy conversion devices, especially outer rotor brushless motor type devices, are widely used in wind power generation, wind-driven equipment and other fields by converting wind energy into electrical energy or mechanical energy.

[0003] The related art discloses a high-stability outer rotor brushless motor, comprising a stator assembly and a rotor assembly, wherein the rotor assembly comprises a magnet, a steel pipe, a wind wheel and a motor shaft, wherein the steel pipe is detachably connected to the wind wheel, and the magnet is fixed in the steel pipe; wherein the stator assembly comprises a stator seat, wherein the end of the motor shaft passes through the wind wheel, the magnet and the stator seat in sequence, wherein one end of the motor shaft is rotatably connected to the stator seat via a first bearing, and the other end of the motor shaft is fixedly connected to the wind wheel; wherein an air inlet cover is fixedly arranged on the stator seat, wherein the air inlet cover is rotatably connected to the magnet, and wherein the air inlet cover is rotatably connected to the motor shaft via a second bearing; wherein a third bearing is also fixedly arranged on the motor shaft, wherein the first bearing and the second bearing are respectively located on opposite sides of the stator seat, and wherein the first bearing and the third bearing are respectively located on opposite sides of the stator seat.

[0004] Although the high-stability outer rotor brushless motor in the related art has achieved certain results in structural design and operational stability, there are still some shortcomings. First, due to the inevitable errors in the processing and assembly of rotor component parts such as magnets and wind wheels, it is difficult to completely eliminate the dynamic balance of the entire rotor, which affects the running stability and service life of the motor to a certain extent. Secondly, as a key component for wind energy conversion, the wind wheel may also have imbalance during its processing, which further affects the overall performance of the motor. In addition, the force design of the bearing in the related art does not fully consider the overall balance and force distribution of the rotor, resulting in uneven force on the bearing under certain working conditions, increasing the risk of wear and failure. Summary of the invention

[0005] In order to solve the problems existing in the prior art, it is necessary to provide a new type of high-efficiency wind energy conversion device to improve the dynamic balance of the rotor, enhance the running stability and extend the service life. The present application provides a high-efficiency wind energy conversion device.

[0006] The present application provides a high-efficiency wind energy conversion device that adopts the following technical solution:

[0007] A high-efficiency wind energy conversion device comprises a rotor assembly, a stator assembly and an air duct assembly; the rotor assembly comprises a rotating shaft and a fan blade, the fan blade is sleeved on the rotating shaft and fixedly connected to the rotating shaft; a first bearing and a second bearing are sleeved on the rotating shaft, and the fan blade is located between the first bearing and the second bearing; the air duct assembly is sleeved on the rotating shaft, one end of the air duct assembly is rotatably connected to the rotating shaft through the first bearing, and the other end of the air duct assembly is rotatably connected to the rotating shaft through the second bearing; the stator assembly is fixed to one end of the air duct assembly, and a magnetic ring is also sleeved on the rotating shaft, the magnetic ring is located inside the stator assembly, and there is a gap between the outer wall of the magnetic ring and the inner wall of the stator assembly; the first bearing is located between the magnetic ring and the second bearing, and the distance between the first bearing and the second bearing is greater than the distance from the center of gravity of the magnetic ring to the first bearing.

[0008] By adopting the above technical solution, the fan blades are firmly mounted on the rotating shaft, ensuring stable rotation under the action of wind. In order to support and ensure the smooth rotation of the rotating shaft, a first bearing and a second bearing are specially arranged on the rotating shaft, which not only provide necessary support, but also reduce friction and resistance during the rotation process through their lubrication and rotation characteristics; the fan blades are placed between the first bearing and the second bearing, so that the rotating shaft is more stable when subjected to wind force; the air duct assembly is rotatably connected with the rotating shaft through the first bearing and the second bearing, and the air duct assembly not only provides necessary protection for the rotating shaft to prevent it from being disturbed and damaged by the external environment, but also ensures the smooth introduction and efficient conversion of wind energy; the stator assembly is fixed to one end of the air duct assembly, forming a certain gap with the magnetic ring on the rotating shaft, which not only ensures the efficiency of electromagnetic conversion, but also avoids direct mechanical friction; the magnetic ring is located inside the stator assembly, and the distance between the first bearing and the second bearing is deliberately set to be greater than the distance from the center of gravity of the magnetic ring to the first bearing, which not only optimizes the dynamic balance of the entire rotor, but also significantly improves the force uniformity of the bearing, which not only optimizes the dynamic balance and force structure of the rotor, but also improves the wind energy conversion efficiency, thereby ensuring the smooth operation and long life of the entire device.

[0009] Optionally, an elastic element is further sleeved on the rotating shaft, and the elastic element is located between the fan blade and the second bearing, one end of the elastic element abuts against the fan blade, and the other end of the elastic element abuts against the second bearing;

[0010] Or an elastic element is further sleeved on the rotating shaft, and the elastic element is located between the fan blade and the first bearing, one end of the elastic element abuts against the fan blade, and the other end of the elastic element abuts against the first bearing.

[0011] By adopting the above technical solution, there is clearance inside the bearing. Under high-speed operation, the clearance will cause the ball to run irregularly in the track, which will produce double-frequency noise; the elastic element is located between the fan blade and the second bearing, which can effectively eliminate the bearing clearance, thereby reducing the irregular movement of the ball in the track under high-speed operation, thereby significantly reducing the double-frequency noise and improving the overall operation smoothness.

[0012] Optionally, the air duct assembly includes an air duct frame, an annular cylinder and a flow equalizing net, the air duct frame is rotatably connected to the rotating shaft via a first bearing, one end of the annular cylinder is fixedly connected to the air duct frame, and a mounting frame is fixedly provided on the inner side wall of the other end of the annular cylinder, the mounting frame is rotatably connected to the rotating shaft via a second bearing, and the flow equalizing net is fixedly connected to the mounting frame.

[0013] By adopting the above technical solution, one end of the annular tube is fixedly connected to the air duct frame, and the other end is rotatably connected to the rotating shaft through the mounting frame and the second bearing, thereby achieving the continuity and flexibility of the air duct and further improving the flexibility and efficiency of wind energy conversion; when the airflow passes through the flow equalizing net, its speed and direction are adjusted, so that the airflow enters the air duct assembly more smoothly, reducing the noise caused by airflow turbulence; in addition, the flow equalizing net can also prevent larger particles from entering the air duct assembly, protecting internal mechanical components from damage.

[0014] Optionally, the gap between the outer diameter of the fan blade and the inner diameter of the annular tube is 0.05mm-0.2mm.

[0015] By adopting the above technical solution, the smaller the gap, the higher the accuracy, and the larger the gap, the lower the efficiency. The gap size between the outer diameter of the fan blade and the inner diameter of the annular tube is 0.05mm-0.2mm, which effectively improves the efficiency of the high-efficiency wind energy conversion device.

[0016] Optionally, the flow balancing net is provided with a plurality of evenly distributed first vents.

[0017] By adopting the above technical solution, the air intake can be made more uniform, wind noise can be effectively reduced, and the stability of the device operation can be improved.

[0018] Optionally, the air duct frame includes an outer tube, an inner tube, and a plurality of inclined connecting members are arranged between the outer tube and the inner tube, one end of each connecting member is fixedly connected to the inner wall of the outer tube, and the other end of each connecting member is fixedly connected to the outer wall of the inner tube, and a second vent is formed between two adjacent connecting members; a bearing tube is fixedly arranged at one end of the inner tube, the bearing tube is sleeved on the first bearing, and the bearing tube is rotatably connected to the rotating shaft through the first bearing.

[0019] By adopting the above technical solution, the duct frame is composed of an outer tube, an inner tube and a plurality of inclined connectors, forming a stable and efficient wind energy introduction structure; the outer tube serves as the peripheral support of the duct frame, and its inner side wall is fixedly connected to one end of a plurality of connectors, and these connectors extend to the outer side wall of the inner tube in an inclined manner and are fixedly connected to the inner tube. This inclined connector design not only enhances the connection strength between the outer tube and the inner tube, but also cleverly forms a second vent between two adjacent connectors. These second vents play a key role in the process of wind energy conversion. They can guide and disperse wind energy so that it acts more evenly on the wind blades, thereby improving the efficiency of wind energy conversion; the inner tube serves as the core part of the duct frame, and a bearing cylinder is fixedly arranged at one end thereof. This bearing cylinder is tightly sleeved on the first bearing and is firmly fixedly connected to the rotating shaft through the first bearing. This design ensures the stable rotation of the rotating shaft under the action of wind energy, and also provides the necessary support for the smooth conversion of wind energy.

[0020] Optionally, a first annular groove is formed on the outer wall at one end of the outer cylinder, and a second annular groove is formed on the inner wall at one end of the annular cylinder, the outer wall of the first annular groove abuts against the inner wall of the second annular groove, and the end of the first annular groove abuts against the end of the second annular groove.

[0021] By adopting the above technical solution, the first annular groove opened on the outer wall at one end of the outer tube abuts against the second annular groove opened on the inner wall at one end of the annular tube, which can achieve precise alignment between the duct assembly and the duct frame, thereby enhancing the stability and reliability of the overall structure.

[0022] Optionally, a positioning flange is fixedly provided on the mounting frame, a positioning groove is opened on the flow balancing net, the positioning flange is located in the positioning groove, and the side wall of the positioning flange abuts against the inner wall of the positioning groove.

[0023] By adopting the above technical solution, by arranging a positioning flange on the mounting frame and opening a corresponding positioning groove on the flow balancing net, the positioning flange can be accurately embedded in the positioning groove, which not only simplifies the installation process of the flow balancing net and improves the installation efficiency, but also ensures the stability and accuracy of the flow balancing net after installation, thereby helping to improve the performance and reliability of the entire equipment.

[0024] Optionally, the wind blade includes a wind wheel and a plurality of blades, the wind wheel is sleeved on the rotating shaft and fixedly connected to the rotating shaft, and the plurality of blades are fixed to the outer wall of the wind wheel; a cavity is opened on one side of the wind wheel, and the inner diameter of the cavity is larger than the outer diameter of the bearing cylinder.

[0025] By adopting the above technical solution, the wind wheel is sleeved on the rotating shaft and fixedly connected to the rotating shaft, ensuring the stable rotation of the wind wheel under the action of wind force, and can maximize the use of wind energy and convert it into mechanical energy of the rotating shaft; the existence of the cavity provides a smoother channel for the airflow. When wind energy acts on the blades, the airflow can pass through the gap between the wind wheel and the blades more freely, reducing airflow resistance and energy loss, and can capture and convert wind energy more efficiently; the opening of the cavity also reduces the weight of the wind wheel, making the entire rotor assembly lighter and more stable during rotation; the lighter weight helps to reduce friction and resistance during rotation, further improving the wind energy conversion efficiency; at the same time, stable rotation also reduces vibration and noise, extending the service life of the device.

[0026] Optionally, one end of the stator assembly is located inside the air duct assembly, and the other end of the stator assembly extends out of the air duct assembly, and a terminal block assembly is provided at the end of the stator assembly extending out of the air duct assembly.

[0027] By adopting the above technical solution, the part of the stator assembly located inside the air duct assembly is well protected, avoiding direct exposure to adverse factors such as wind, sand, rain and other adverse factors in the external environment, thereby extending the service life of the stator assembly; the existence of the air duct assembly provides a relatively closed and stable working environment for the stator assembly, which helps to maintain its performance and stability; the end of the stator assembly extending from the air duct assembly is provided with a terminal board assembly, which makes power output and cable connection more convenient and quick. At the same time, this design also facilitates the maintenance and overhaul of the stator assembly. When the stator assembly needs to be replaced or repaired, the staff can more easily access the relevant components, reducing the difficulty and cost of maintenance.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The air duct assembly is rotatably connected to the rotating shaft through the first bearing and the second bearing, which not only provides necessary protection for the rotating shaft, but also ensures the smooth introduction and efficient conversion of wind energy, thereby improving the wind energy conversion efficiency;

[0030] 2. A certain gap is formed between the stator assembly and the magnetic ring on the rotating shaft, which not only ensures the efficiency of electromagnetic conversion, but also avoids direct mechanical friction, optimizes the dynamic balance and force structure of the entire rotor, and further improves the reliability and conversion efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of a high-efficiency wind energy conversion device in an embodiment of the present application.

[0032] Figure 2 It is a half-section view of a high-efficiency wind energy conversion device in an embodiment of the present application.

[0033] Figure 3 It is a schematic diagram of the structure of the rotor assembly, the first bearing, the second bearing, the magnetic ring and the elastic element in the embodiment of the present application.

[0034] Figure 4 It is a schematic diagram of the assembly relationship of the air duct component in the embodiment of the present application.

[0035] Description of reference numerals:

[0036] 1. Rotor assembly; 11. Rotating shaft; 12. Fan blade; 121. Wind wheel; 122. Blade; 123. Cavity; 2. Stator assembly; 3. Air duct assembly; 31. Air duct frame; 311. Outer cylinder; 312. Inner cylinder; 313. Connector; 314. Second vent; 315. Bearing cylinder; 316. First annular groove; 32. Annular cylinder; 321. Second annular groove; 33. Flow equalizing net; 331. First vent; 332. Positioning groove; 34. Mounting frame; 341. Positioning flange; 4. First bearing; 5. Second bearing; 6. Magnetic ring; 7. Elastic element; 8. Terminal block assembly. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-4 This application is described in further detail.

[0038] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be the common meanings understood by those skilled in the art to which this application belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components.

[0039] The present application provides a high-efficiency wind energy conversion device, referring to Figure 1 and Figure 2 The high-efficiency wind energy conversion device includes a rotor assembly 1, a stator assembly 2 and an air duct assembly 3.

[0040] Reference Figure 2 and Figure 3The rotor assembly 1 includes a rotating shaft 11 and a fan blade 12. The fan blade 12 is sleeved on the rotating shaft 11 and fixedly connected to the rotating shaft 11. The rotating shaft 11 is sleeved with a first bearing 4 and a second bearing 5, and the fan blade 12 is located between the first bearing 4 and the second bearing 5. The air duct assembly 3 is sleeved on the rotating shaft 11. One end of the air duct assembly 3 is rotatably connected to the rotating shaft 11 through the first bearing 4, and the other end of the air duct assembly 3 is rotatably connected to the rotating shaft 11 through the second bearing 5. The stator assembly 2 is fixed to one end of the air duct assembly 3. The rotating shaft 11 is also sleeved with a magnetic ring 6. The magnetic ring 6 is located inside the stator assembly 2. There is a gap between the outer wall of the magnetic ring 6 and the inner wall of the stator assembly 2, ensuring that the outer wall of the magnetic ring 6 will not contact the inner wall of the stator assembly 2 when the rotating shaft 11 drives the magnetic ring 6 to rotate, which has a protective effect on both the magnetic ring 6 and the stator assembly. The first bearing 4 is located between the magnetic ring 6 and the second bearing 5, and the distance between the first bearing 4 and the second bearing 5 is greater than the distance from the center of gravity of the magnetic ring 6 to the first bearing 4. While ensuring structural stability and reducing friction resistance, the positioning of the magnetic ring 6 and the overall dynamic balance of the rotor assembly 1 are also optimized, thereby improving the wind energy conversion efficiency.

[0041] Continue to refer to Figure 2 and Figure 3 Specifically, an elastic element 7 is sleeved on the rotating shaft 11, and the elastic element 7 is located between the fan blade 12 and the second bearing 5, and one end of the elastic element 7 abuts against the fan blade 12, and the other end abuts against the second bearing 5. Of course, the elastic element 7 in this embodiment can also be located between the fan blade 12 and the first bearing 4, in which case one end of the elastic element 7 abuts against the fan blade 12, and the other end of the elastic element 7 abuts against the first bearing 4.

[0042] The elastic element 7 can effectively eliminate the clearance of the bearing when it is running at high speed, thereby reducing the noise generated during the rotation of the bearing and improving the running stability. The elastic element 7 can be selected from but not limited to a rubber spacer or a spring. The rubber spacer can be natural rubber or synthetic rubber, which has good elasticity and wear resistance. The spring can be made of steel or alloy materials, which have high elasticity and strength and can remain stable under high-speed rotation.

[0043] Reference Figure 2 and Figure 4, the air duct assembly 3 includes an air duct frame 31, an annular tube 32 and a flow-equalizing net 33. The air duct frame 31 is rotatably connected to the rotating shaft 11 through the first bearing 4, one end of the annular tube 32 is fixedly connected to the air duct frame 31, and the inner side wall of the other end of the annular tube 32 is fixedly provided with a mounting frame 34, and the mounting frame 34 is rotatably connected to the rotating shaft 11 through the second bearing 5. One side of the flow-equalizing net 33 abuts the surface of the mounting frame 34, and the other side of the flow-equalizing net 33 is flush with the annular tube 32, which increases the convenience of the staff to install and remove the flow-equalizing net 33. It can effectively guide the airflow, and ensure uniform air intake through the flow-equalizing net 33, reduce wind noise, and improve the stability and stability of the device operation. The air duct frame 31 can be made of stainless steel or light alloy material, which can not only provide sufficient strength, but also reduce its own weight, which helps to improve the wind energy conversion efficiency. The annular tube 32 can also be made of stainless steel or light alloy material, and is fixed to the air duct frame 31 by fasteners or welding to ensure the stability of the structure.

[0044] A plurality of positioning flanges 341 are fixedly provided on the mounting frame 34, and the plurality of positioning flanges 341 are evenly distributed along the circumference. A plurality of positioning grooves 332 are correspondingly provided on the flow balancing net 33, and the plurality of positioning grooves 332 are evenly distributed along the circumference. The positioning flanges 341 correspond to the positioning grooves 332 one by one, and each positioning flange 341 is located in the positioning groove 332, and the side wall of each positioning flange 341 abuts against the inner side wall of the positioning groove 332. By providing a plurality of positioning flanges 341 on the mounting frame 34 and providing corresponding positioning grooves 332 on the flow balancing net 33, the positioning flanges 341 can be accurately embedded in the positioning grooves 332, which not only simplifies the installation process of the flow balancing net 33 and improves the installation efficiency, but also ensures the stability and accuracy of the flow balancing net 33 after installation.

[0045] Reference Figure 4 , a plurality of evenly distributed first vents 331 are provided on the flow-equalizing net 33. In this way, the air intake is more even and the wind noise is further reduced. The flow-equalizing net 33 can be a metal net or a plastic net. The metal net has high strength and durability and is suitable for high-speed operation conditions; the plastic net has light weight and good corrosion resistance and is suitable for low-speed operation or corrosive environments. The design of each first vent 331 can be circular or square, and the specific shape can be optimized according to the actual application scenario.

[0046] Continue to refer to Figure 4The air duct frame 31 includes an outer tube 311 and an inner tube 312. A plurality of inclined connectors 313 are arranged between the outer tube 311 and the inner tube 312. One end of each connector 313 is fixedly connected to the inner wall of the outer tube 311, and the other end of each connector 313 is fixedly connected to the outer wall of the inner tube 312. A second vent 314 is formed between two adjacent connectors 313. This design not only enhances the connection strength between the outer tube 311 and the inner tube 312, but also enables the airflow to act more evenly on the fan blades 12, thereby improving the wind energy conversion efficiency. The outer tube 311 and the inner tube 312 can be made of high-strength aluminum alloy or carbon steel materials, respectively, and the connector 313 can be made of stainless steel or high-strength plastic materials. By selecting and matching these materials, the overall performance and durability of the device can be optimized while satisfying the structural strength.

[0047] Reference Figure 2 and Figure 4 A bearing cylinder 315 is fixedly arranged at one end of the inner cylinder 312, and the bearing cylinder 315 is fixedly connected to the rotating shaft 11 through the first bearing 4. This design ensures the stable rotation of the rotating shaft 11 during the wind intake process, which not only ensures the smooth operation of the device, but also provides support for the smooth introduction of wind energy. A first annular groove 316 is arranged at one end of the outer cylinder 311, and a second annular groove 321 is arranged at one end of the annular cylinder 32. This design enhances the stability and reliability of the overall structure. The first annular groove 316 and the second annular groove 321 can be processed by grinding or rolling.

[0048] Reference Figure 2 and Figure 3 The fan blade 12 includes a fan wheel 121 and a plurality of blades 122. The fan wheel 121 is sleeved on the rotating shaft 11 and fixedly connected to the rotating shaft 11, and the plurality of blades 122 are fixed to the outer wall of the fan wheel 121. Such a design forms a stable connection between the fan blade 12 and the rotating shaft 11, effectively reduces airflow resistance, reduces the overall weight through the cavity 123, and enhances the operating stability and service life of the device.

[0049] Continue to refer to Figure 2 and Figure 3 The stator assembly 2 is fixed to one end of the air duct assembly 3, one end of the stator assembly 2 is located inside the air duct assembly 3, the other end of the stator assembly 2 extends out of the air duct assembly 3, and a terminal block assembly 8 is provided at the end of the stator assembly 2 extending out of the air duct assembly 3. Through this solution, the part of the stator assembly 2 located inside the air duct assembly 3 is well protected, avoiding direct exposure to adverse factors in the external environment, thereby extending the service life of the stator assembly 2. The terminal block assembly 8 is located outside the air duct assembly 3, which is convenient for wire connection and maintenance.

[0050] The implementation principle of this embodiment is as follows: the fan blades 12 are firmly mounted on the rotating shaft 11 to ensure stable rotation under the action of wind. In order to support and ensure the smooth rotation of the rotating shaft 11, a first bearing 4 and a second bearing 5 are particularly provided on the rotating shaft 11, which not only provide the necessary support, but also reduce the friction and resistance during the rotation process through their lubrication and rotation characteristics; the fan blades 12 are placed between the first bearing 4 and the second bearing 5, so that the rotating shaft 11 is more stable when subjected to wind force; the air duct assembly 3 is connected to the rotating shaft 11 through the first bearing 4 and the second bearing 5, which not only provides the necessary protection for the rotating shaft 11 to prevent it from being disturbed and damaged by the external environment, but also ensures the smooth rotation of the wind energy. Introduction and efficient conversion; the stator assembly 2 is fixed to one end of the air duct assembly 3, forming a certain gap with the magnetic ring 6 on the rotating shaft 11, which not only ensures the efficiency of electromagnetic conversion, but also avoids direct mechanical friction; the magnetic ring 6 is located inside the stator assembly 2, and the distance between the first bearing 4 and the second bearing 5 is deliberately set to be greater than the distance from the center of gravity of the magnetic ring 6 to the first bearing 4, which not only optimizes the dynamic balance of the entire rotor, but also significantly improves the force uniformity of the bearing, not only optimizes the dynamic balance and force structure of the rotor, but also improves the wind energy conversion efficiency, thereby ensuring the smooth operation and long life of the entire device.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-efficiency wind energy conversion device, characterized in that: The invention comprises a rotor assembly (1), a stator assembly (2) and an air duct assembly (3); the rotor assembly (1) comprises a rotating shaft (11) and a fan blade (12); the fan blade (12) is sleeved on the rotating shaft (11) and fixedly connected to the rotating shaft (11); the rotating shaft (11) is sleeved with a first bearing (4) and a second bearing (5); the fan blade (12) is located between the first bearing (4) and the second bearing (5); the air duct assembly (3) is sleeved on the rotating shaft (11); one end of the air duct assembly (3) is rotatably connected to the rotating shaft (11) via the first bearing (4); The other end of the air duct component (3) is rotatably connected to the rotating shaft (11) via the second bearing (5); the stator component (2) is fixed to one end of the air duct component (3); a magnetic ring (6) is also sleeved on the rotating shaft (11); the magnetic ring (6) is located inside the stator component (2); a gap exists between the outer wall of the magnetic ring (6) and the inner wall of the stator component (2); the first bearing (4) is located between the magnetic ring (6) and the second bearing (5); the distance between the first bearing (4) and the second bearing (5) is greater than the distance from the center of gravity of the magnetic ring (6) to the first bearing (4); An elastic element (7) is also sleeved on the rotating shaft (11), and the elastic element (7) is located between the fan blade (12) and the second bearing (5), one end of the elastic element (7) abuts against the fan blade (12), and the other end of the elastic element (7) abuts against the second bearing (5); Or an elastic element (7) is further sleeved on the rotating shaft (11), the elastic element (7) is located between the fan blade (12) and the first bearing (4), one end of the elastic element (7) abuts against the fan blade (12), and the other end of the elastic element (7) abuts against the first bearing (4); The air duct assembly (3) comprises an air duct frame (31), an annular cylinder (32) and a flow balancing net (33); the air duct frame (31) is rotatably connected to the rotating shaft (11) via a first bearing (4); one end of the annular cylinder (32) is fixedly connected to the air duct frame (31); a mounting frame (34) is fixedly provided on the inner side wall of the other end of the annular cylinder (32); the mounting frame (34) is rotatably connected to the rotating shaft (11) via a second bearing (5); and the flow balancing net (33) is fixedly connected to the mounting frame (34); The gap between the outer diameter of the fan blade (12) and the inner diameter of the annular tube (32) is 0.05 mm to 0.2 mm.

2. A high-efficiency wind energy conversion device according to claim 1, characterized in that: The flow balancing net (33) is provided with a plurality of evenly distributed first ventilation openings (331).

3. A high-efficiency wind energy conversion device according to claim 1, characterized in that: The air duct frame (31) comprises an outer cylinder (311) and an inner cylinder (312); a plurality of inclined connecting members (313) are arranged between the outer cylinder (311) and the inner cylinder (312); one end of each connecting member (313) is fixedly connected to the inner wall of the outer cylinder (311); the other end of each connecting member (313) is fixedly connected to the outer wall of the inner cylinder (312); a second ventilation opening (314) is formed between two adjacent connecting members (313); a bearing cylinder (315) is fixedly arranged at one end of the inner cylinder (312); the bearing cylinder (315) is sleeved on the first bearing (4); and the bearing cylinder (315) is rotatably connected to the rotating shaft (11) via the first bearing (4).

4. A high-efficiency wind energy conversion device according to claim 3, characterized in that: A first annular groove (316) is formed on the outer wall at one end of the outer cylinder (311), and a second annular groove (321) is formed on the inner wall at one end of the annular cylinder (32). The outer wall of the first annular groove (316) abuts against the inner wall of the second annular groove (321), and the end of the first annular groove (316) abuts against the end of the second annular groove (321).

5. A high-efficiency wind energy conversion device according to claim 1, characterized in that: A positioning flange (341) is fixedly provided on the mounting frame (34), a positioning groove (332) is provided on the flow balancing net (33), the positioning flange (341) is located in the positioning groove (332), and the side wall of the positioning flange (341) abuts against the inner side wall of the positioning groove (332).

6. A high-efficiency wind energy conversion device according to claim 3, characterized in that: The wind blade (12) comprises a wind wheel (121) and a plurality of blades (122); the wind wheel (121) is sleeved on the rotating shaft (11) and fixedly connected to the rotating shaft (11); the plurality of blades (122) are fixed to the outer wall of the wind wheel (121); a cavity (123) is provided on one side of the wind wheel (121); the inner diameter of the cavity (123) is greater than the outer diameter of the bearing cylinder (315).

7. A high-efficiency wind energy conversion device according to claim 1, characterized in that: One end of the stator assembly (2) is located inside the air duct assembly (3), and the other end of the stator assembly (2) protrudes from the air duct assembly (3); a terminal block assembly (8) is provided at the end of the stator assembly (2) protruding from the air duct assembly (3).

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