Double-shaft coupling vertical-shaft breeze power generation device

Abstract

The invention relates to the technical field of breeze power generation devices, in particular to a double-shaft coupling vertical-shaft breeze power generation device which comprises a magnetic suspension generator, a power distribution cabinet and an energy storage cabinet. The air guide barrel is of a box-type structure with front and rear openings, the air guide seat is embedded between the upper and lower parts in the air guide barrel, and hyperbolic air inlet ducts are formed on the two sides of the front half part of the air guide seat; two wind wheels and a coupling gear which is connected with the top ends of central shafts of the two wind wheels in a sleeving mode and meshed with the central shafts are arranged on the side of the middle of the wind guiding base. Two-channel symmetrical coupling air inlet is adopted by the air guide cylinder, vibration of the device caused by component force in the non-power direction is reduced, and the operation stability of the device is improved; the two air inlet channels converge into two wind beams to impact on the concave arc surfaces of the blades of the wind wheel, so that the refraction of the convex surfaces of the blades of the wind wheel on wind power and the leeward impact are reduced to zero, and the wind power utilization coefficient is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of micro-wind power generation devices, and in particular to a dual-axis coupled vertical-axis micro-wind power generation device. Background Art

[0002] Microwind power generation is a clean and renewable energy utilization method that can reduce dependence on traditional energy, reduce energy consumption and environmental pollution. The advantage of microwind power generation is that it can use any wind speed. As long as the wind speed is above 2m / s, it can generate electricity, thereby reducing the requirements for the installation site of wind power generation devices. It can be widely used in urban and rural open spaces, building roofs, both sides of roads, etc., and is suitable for large-scale distributed installation applications.

[0003] Due to structural limitations, the existing vertical axis micro-wind power generation devices inevitably have problems such as wind refraction, leeward impact, unconcentrated wind, and insufficient kinetic energy, which makes the wind energy utilization coefficient generally between 30% and 40%, greatly limiting the promotion and application of micro-wind power generation technology.

[0004] Therefore, researching and developing a new and efficient micro-wind power generation device has become the common desire of the majority of wind power engineering scientific research workers and engineering and technical personnel. Summary of the invention

[0005] In order to overcome the defects in the prior art, the purpose of the present invention is to provide a dual-axis coupled vertical axis breeze power generation device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides a dual-axis coupled vertical axis breeze power generation device, comprising a magnetic levitation generator, a power distribution cabinet and an energy storage cabinet, wherein an air guide tube for driving the rotation of the suspension generator is arranged at the upper end of the transmission shaft, and an energy conversion unit for guiding the wind beam to gather into two strands and serving as the kinetic energy for driving the transmission shaft is arranged inside the air guide tube; the air guide tube is a box-type structure with front and rear openings, and an air guide seat is embedded between the upper and lower parts thereof, the cross-section of the air guide seat is a pointed ellipse and points to the front and rear directions of the air guide tube, and air adjustment seats are symmetrically arranged on both sides of the middle part of the air guide seat, and an air adjustment door is rotatably connected to the front end of the air adjustment seat, and the air adjustment door is in the shape of an arc plate and its front end is snap-fitted with the inner wall of the front end of the air guide tube; a hyperbolic air inlet is formed between the two sides of the front half of the air guide seat and the two air adjustment doors;

[0007] The energy conversion unit includes two wind wheels embedded between the wind guide seat and the sides of the middle part of the two wind adjusting seats, and a coupling gear that is sleeved on the top of the central axis of the two wind wheels and meshes with each other; the side wall of the central axis of the wind wheel is annularly provided with a plurality of blades at equal intervals, and the blades are in a circular arc plate-like structure, and the two wind wheels are arranged in a mirror-symmetrical manner about the central axis of the wind guide seat, and the wind wheels are located at the ports in the air inlet duct, and the lateral width of the air inlet duct is smaller than the radius of the wind wheel; the wind beam entering the air inlet duct is accelerated and impacts the concave arc surface of the wind wheel blade to perform work, then the wind beam is not refracted on the convex arc surface of the wind wheel blade and disturbed by the leeward impact, and the energy conversion unit superimposes the work done by the two wind wheels, drives a magnetic levitation generator to work, and outputs electricity to the distribution cabinet for energy storage.

[0008] As a further improvement of the present technical solution, the inner port width of the air inlet duct is 1 / 10-1 / 15 of the circumference of the wind sweeping section of the wind wheel blade.

[0009] As a further improvement of the technical solution, the diameter of the central axis of the wind wheel is 1 / 6-1 / 8 of the diameter of the wind-swept cross-section of its blades, and the number of blades is 8-10.

[0010] As a further improvement of the present technical solution, the bottom of the air guide tube is equipped with a circular guide rail, a motor for driving the circular guide rail to rotate, and a wind direction monitoring sensor. When the incoming wind direction changes, the wind direction is detected by the wind direction monitoring sensor to start the motor to drive the air guide tube to rotate, thereby adjusting the front port of the air guide tube to face the incoming wind direction.

[0011] As a further improvement of the present technical solution, the front end of the air regulating seat is provided with a card slot at the upper and lower parts, and the rear end of the air regulating door is provided with a rotating block protruding at the upper and lower parts. The rotating block is engaged with the card slot and plugged into the transmission shaft, and the bottom end of the transmission shaft is coaxially connected with an electric motor.

[0012] As a further improvement of the present technical solution, an exhaust duct is formed between the air regulating seat and the inner wall of the air guide tube, an exhaust port is formed between the rear end of the exhaust duct and the rear end of the air guide tube, and the width of the exhaust port is smaller than the width of the spacing between the front end of the exhaust duct and the inner wall of the air guide tube; when the operating wind speed is higher than the rated maximum wind speed, the air regulating door is driven by the electric motor to leave the inner wall of the air guide tube, and the wind beam is discharged from the exhaust duct to release the wind.

[0013] As a further improvement of the present technical solution, air guide grooves are symmetrically provided in the middle of both sides of the air guide seat, and air adjusting grooves are provided at the front end of the air adjusting seat and facing the side wall of the air guide seat. The cross-sections of the air guide grooves and the air adjusting grooves are arc surfaces with the same center and radius, and the relatively arranged air guide grooves and the air adjusting grooves are adapted to be sleeved with a wind wheel.

[0014] As a further improvement of the present technical solution, an air induced slope is provided on the upper and lower sides of the front end of the air guide tube, the inner edge of the air induced slope extends to the front end of the air adjustment seat, and limiting grooves are provided on the two inner side walls of the front end of the air guide tube, and the front end of the air adjustment door is snap-fitted with the limiting grooves.

[0015] As a further improvement of the technical solution, the upper and lower ends of the wind wheel are installed on the magnetic suspension bearing, and through holes are symmetrically opened on the upper and lower surfaces of the wind guide cylinder, and the through holes are sleeved with the outer shell of the magnetic suspension bearing.

[0016] As a further improvement of the technical solution, there are two magnetic levitation generators, and the two transmission shafts are coaxially connected to the central axes of the two wind wheels.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The dual-axis coupled vertical axis breeze power generation device adopts a dual-channel symmetrical coupled wind intake through the wind guide tube, which reduces the vibration of the device caused by the component force in the non-power direction and improves the operation stability of the device; the two wind beams are converged into two wind beams through the two air inlet ducts and impact on the concave arc surface of the wind wheel blade, so that the refraction of the wind force by the convex surface of the wind wheel blade and the leeward impact are reduced to zero, effectively improving the wind energy utilization coefficient.

[0019] 2. The dual-axis coupled vertical axis breeze power generation device has an air regulating door arranged on one side of the air inlet duct. When the operating wind speed is higher than the rated maximum wind speed, the air regulating door is driven by an electric motor to leave the inner wall of the air guide tube, so that the wind beam is discharged from the exhaust duct to release the wind, thereby protecting the safe operation of the device.

[0020] 3. The dual-axis coupled vertical axis breeze power generation device is equipped with a circular guide rail, a motor for driving the circular guide rail to rotate, and a wind direction monitoring sensor at the bottom of the wind guide tube; when the incoming wind direction changes, the wind direction is detected by the wind direction monitoring sensor to start the motor to drive the wind guide tube to rotate, and then the front port of the wind guide tube is adjusted to face the incoming wind direction, ensuring that it can be fully loaded and face the wind at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the drawings are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art, under the guidance of the present invention, select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0022] Figure 1 It is a schematic diagram of the overall assembly structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 The main view;

[0024] Figure 3 It is a schematic diagram of the overall internal assembly structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the energy conversion unit assembly structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the wind wheel structure of the present invention;

[0027] Figure 6 For the present invention Figure 3 The main view;

[0028] Figure 7 For the present invention Figure 6 A top view of

[0029] Figure 8 It is a schematic diagram of the structure of the air guide tube of the present invention;

[0030] Fig. 9 It is a partial cross-sectional view of the air guide tube of the present invention;

[0031] The meaning of each number in the figure is:

[0032] 100, air guide tube; 101, air guide slope; 102, limit slot; 103, through hole; 110, air guide seat; 111, air guide slot;

[0033] 120, air adjustment seat; 121, air adjustment slot; 122, card slot; 130, air adjustment door; 131, rotating block; 140, exhaust duct; 141, exhaust port; 150, air inlet duct;

[0034] 200. Energy conversion unit; 210. Wind wheel; 220. Magnetic bearing; 230. Coupling gear. DETAILED DESCRIPTION

[0035] The details of the present invention can be more clearly understood by combining the accompanying drawings with the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used for the purpose of explaining the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, the technical personnel's conception is based on any possible variation of the present invention, which should be regarded as belonging to the scope of the present invention. The terms "installation" and "connection" should be understood in a broad sense, which means direct connection and indirect connection through an intermediate medium.

[0036] The terms "central axis", "vertical", "horizontal", "front", "back", "up", "down", "left", "right", "top", "bottom", "inside", "outside" and the like used herein to indicate positions or positional relationships are based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0037] See also Figure 1-Figure 9 As shown, the present invention provides a dual-axis coupled vertical axis breeze power generation device, including a magnetic levitation generator, a power distribution cabinet and an energy storage cabinet, the upper end of the transmission shaft of the magnetic levitation generator is provided with an air guide 100 for driving the rotation thereof, the interior of the air guide 100 is provided with an energy conversion unit 200 for guiding the wind beam to converge into two strands as kinetic energy for driving the transmission shaft; the bottom of the air guide 100 is equipped with a circular guide rail, a motor for driving the circular guide rail to rotate and a wind direction monitoring sensor, the power distribution cabinet is provided with a vertical pipe sleeved with the circular guide rail, the output end of the motor is coaxially connected with a gear, and the outer wall of the circular guide rail is sleeved with a gear ring meshing with the gear; when the incoming wind direction changes, the wind direction is detected by the wind direction monitoring sensor to start the motor to drive the air guide 100 to rotate, and then the front end of the air guide 100 is adjusted to face the incoming wind direction, to ensure that it can face the wind at full load at any time.

[0038] Specifically, the air guide tube 100 is a box-type structure with front and rear openings, and the air guide seat 110 is embedded in the upper and lower parts of the air guide tube 100. The cross section of the air guide seat 110 is a pointed ellipse and points to the front and rear directions of the air guide tube 100, thereby dividing the interior of the air guide tube 100 into two parts; the air adjustment seats 120 are symmetrically arranged on both sides of the middle part of the air guide seat 110, thereby dividing the interior of the air guide tube 100 into four parts; the front end of the air adjustment seat 120 is rotatably connected with an air adjustment door 130, which is in the shape of an arc plate and its front end is snap-fitted with the inner wall of the front end of the air guide tube 100; the convex arc surface of the air adjustment door 130 is opposite to the convex arc surface of the air guide seat 110, and a hyperbolic air inlet 150 is formed between the two sides of the front half of the air guide seat 110 and the two air adjustment doors 130, which is used to smoothly guide the wind beam into between the air guide seat 110 and the two air adjustment seats 120;

[0039] The windward side is designed as two air inlets 150 of hyperbolic Venturi structure. The Bernoulli equation of fluid mechanics is followed in the air inlet 150. After the cross section is reduced several times and the wind speed is increased several times, the wind enters the concave surface of the wind wheel 210 blades, pushing the wind wheel 210 to do external work.

[0040] The energy conversion unit 200 includes two wind wheels 210 embedded between the wind guide seat 110 and the sides of the middle of the two wind adjustment seats 120, and a coupling gear 230 that is sleeved and meshed with the top of the central axis of the two wind wheels 210; the central axis side wall of the wind wheel 210 is annular and has a plurality of blades at equal intervals, and the blades are in an arc plate structure. The two wind wheels 210 are arranged in a mirror-symmetrical manner about the central axis of the wind guide seat 110, and the wind wheels 210 are located at the inner port of the air inlet 150, and the lateral width of the air inlet 150 is smaller than the radius of the wind wheel 210; due to the narrow tube effect The existence of the wind flow rate entering the wind wheel 210 can be increased, thereby greatly increasing the work capacity; the wind beam entering the air inlet duct 150 is accelerated and impacts the concave arc surface of the wind wheel 210 blade to do work, and the wind beam does not refract or cause leeward impact disturbance on the convex arc surface of the wind wheel 210 blade, so that the refraction and leeward impact of the convex surface of the wind wheel 210 blade on the wind force is reduced to zero, effectively improving the wind energy utilization coefficient; the energy conversion unit 200 superimposes the work done by the two wind wheels 210, drives a magnetic levitation generator to work, and outputs electricity to the distribution cabinet for energy storage.

[0041] Furthermore, the inner port width of the air inlet 150 is 1 / 10-1 / 15 of the circumference of the wind sweeping section of the wind wheel 210 blades; the wind sweeping section is the projected area of ​​the wind wheel 210 blades on a plane perpendicular to the rotation axis when the wind wheel 210 rotates. Due to the existence of the narrow tube effect, the air flow rate entering the wind wheel 210 is increased, thereby greatly increasing the work capacity;

[0042] The central axis diameter of the wind wheel 210 is 1 / 6-1 / 8 of the diameter of the wind swept section of its blades, and the number of blades is 8-10; the volume and weight of the wind wheel 210 are made 1 / 3-1 / 4 of the volume and weight of the traditional vertical axis wind turbine, thereby greatly reducing the manufacturing difficulty and manufacturing cost.

[0043] Furthermore, a slot 122 is provided at the front end of the air regulating seat 120, and a rotating block 131 is provided at the rear end of the air regulating door 130. The rotating block 131 is engaged with the slot 122 and plugged into the transmission shaft, and the bottom end of the transmission shaft is coaxially connected with an electric motor.

[0044] An exhaust duct 140 is formed between the air regulating seat 120 and the inner wall of the air guide tube 100, and an exhaust port 141 is formed between the rear end of the exhaust duct 140 and the rear end of the air guide tube 100, and the width of the exhaust port 141 is smaller than the width of the distance between the front end of the exhaust duct 140 and the inner wall of the air guide tube 100; when the operating wind speed is higher than the rated maximum wind speed, the air regulating door 130 is driven by the electric motor to leave the inner wall of the air guide tube 100, and the wind beam is discharged from the exhaust duct 140 to leak the wind, thereby ensuring the safe operation of the protection device.

[0045] Furthermore, air guide grooves 111 are symmetrically opened in the middle of both sides of the air guide seat 110, and air adjusting grooves 121 are opened at the front end of the air adjusting seat 120 and facing the side wall of the air guide seat 110. The cross-sections of the air guide grooves 111 and the air adjusting grooves 121 are arc surfaces with the same center and radius. The relatively arranged air guide grooves 111 and the air adjusting grooves 121 are adapted to be sleeved with a wind wheel 210 to prevent the wind beam from flowing away from the gap, so that all of the wind beams hit the concave surface of the wind wheel 210 blades to do work.

[0046] Furthermore, an air induction slope 101 is provided on the upper and lower sides of the front end of the air guide tube 100, and the inner edge of the air induction slope 101 extends to the front end of the air adjustment seat 120, so that the wind beam entering the air guide tube 100 flows smoothly and converges to impact the wind wheel 210; limiting grooves 102 are provided on the two inner side walls of the front end of the air guide tube 100, and the front end of the air regulating door 130 is snap-fitted with the limiting grooves 102, thereby increasing the strength of the air regulating door 130 to resist the wind beam.

[0047] It is worth mentioning that the upper and lower ends of the wind wheel 210 are installed on the magnetic bearing 220, and the upper and lower surfaces of the wind guide tube 100 are symmetrically provided with through holes 103, which are sleeved with the outer shell of the magnetic bearing 220; there are two magnetic levitation generators, and the two transmission shafts are coaxially connected to the central axes of the two wind wheels 210, and then the power output is collected to the distribution cabinet, so that the friction resistance of the rotation of the wind wheel 210 is minimized; in order to output electric power smoothly, an energy storage cabinet is designed to match the distribution cabinet, so that the excess electricity can be stored when the wind speed is high, and the insufficient electricity can be made up when the wind speed is low.

[0048] The working principle of the dual-axis coupled vertical axis breeze power generation device of the present invention is that after the wind beam blows to the front end of the wind guide tube 100, it converges into two wind beams through the two air inlet ducts 150 and impacts the concave arc surface of the blades of the wind wheel 210, so that the two wind wheels 210 rotate in opposite directions to do work. Due to the existence of the narrow tube effect, the air flow rate entering the wind wheel 210 is increased through the guidance of the air inlet duct 150, thereby greatly increasing the work capacity; the wind beam entering the air inlet duct 150 is accelerated and impacts the concave arc surface of the blades of the wind wheel 210 to do work, and the wind beam does not refract and leeward impact on the convex arc surface of the blades of the wind wheel 210, so that the refraction and leeward impact of the convex surface of the blades of the wind wheel 210 are reduced to zero, thereby effectively improving the wind energy utilization coefficient; the energy conversion unit 200 superimposes the work done by the two wind wheels 210, drives a magnetic levitation generator to work, and outputs electricity to the distribution cabinet for energy storage;

[0049] When the operating wind speed is higher than the rated maximum wind speed, the electric motor is driven to drive the air regulating door 130 to leave the inner wall of the air guide tube 100, and the wind beam is discharged from the exhaust duct 140 to leak the wind, thereby protecting the safe operation of the device.

[0050] It should be noted that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A dual-axis coupled vertical axis breeze power generation device, comprising a magnetic levitation generator, a power distribution cabinet and an energy storage cabinet, characterized in that: The upper end of the transmission shaft of the suspended generator is provided with an air guide tube (100) for driving the generator to rotate, and the interior of the air guide tube (100) is provided with an energy conversion unit (200) for guiding the wind beam to gather into two streams and serving as kinetic energy for driving the transmission shaft; the air guide tube (100) is a box-type structure with front and rear openings, and an air guide seat (110) is embedded between the upper and lower parts of the air guide tube; the cross section of the air guide seat (110) is a pointed ellipse and points to the front and rear directions of the air guide tube (100); air adjustment seats (120) are symmetrically arranged on both sides of the middle part of the air guide seat (110); the front end of the air adjustment seat (120) is rotatably connected to an air adjustment door (130); the air adjustment door (130) is in the shape of an arc plate, and the front end thereof is snap-fitted with the inner wall of the front end of the air guide tube (100); a hyperbolic air inlet duct (150) is formed between the two sides of the front half of the air guide seat (110) and the two air adjustment doors (130); The energy conversion unit (200) comprises two wind wheels (210) embedded between the wind guide seat (110) and the sides of the middle of the two wind adjustment seats (120), and a coupling gear (230) sleeved on the top ends of the central axes of the two wind wheels (210) and meshing with each other; the central axis side wall of the wind wheel (210) is annularly provided with a plurality of blades at equal intervals, and the blades are in an arc plate-like structure; the two wind wheels (210) are arranged in a mirror-symmetrical manner with respect to the central axis of the wind guide seat (110), and the wind wheels (210) Located at the port in the air inlet duct (150), the transverse width of the air inlet duct (150) is smaller than the radius of the wind wheel (210); the wind beam entering the air inlet duct (150) is accelerated and impacts the concave arc surface of the wind wheel (210) blade to perform work, and the wind beam is not refracted on the convex arc surface of the wind wheel (210) blade and is not disturbed by the leeward impact. The energy conversion unit (200) superimposes the work of the two wind wheels (210) to drive a magnetic levitation generator to work and output electricity to the distribution cabinet for energy storage.

2. The dual-axis coupled vertical axis breeze power generation device according to claim 1, characterized in that: The inner port width of the air inlet duct (150) is 1 / 10-1 / 15 of the circumference of the wind sweeping section of the wind wheel (210) blade.

3. The dual-axis coupled vertical axis breeze power generation device according to claim 2 is characterized in that: The central axis diameter of the wind wheel (210) is 1 / 6-1 / 8 of the diameter of the wind sweeping cross section of its blades, wherein the number of blades is 8-10.

4. The dual-axis coupled vertical axis breeze power generation device according to claim 3 is characterized in that: The bottom of the air guide tube (100) is equipped with a circular guide rail, a motor for driving the circular guide rail to rotate, and a wind direction monitoring sensor. When the incoming wind direction changes, the wind direction is detected by the wind direction monitoring sensor to start the motor to drive the air guide tube (100) to rotate, thereby adjusting the front end of the air guide tube (100) to face the incoming wind direction.

5. The dual-axis coupled vertical axis breeze power generation device according to claim 4 is characterized in that: The front end of the air regulating seat (120) is provided with a slot (122) at the top and bottom, and the rear end of the air regulating door (130) is provided with a rotating block (131) protruding at the top and bottom. The rotating block (131) is engaged with the slot (122) and plugged into the transmission shaft, and the bottom end of the transmission shaft is coaxially connected to an electric motor.

6. The dual-axis coupled vertical axis breeze power generation device according to claim 5, characterized in that: An exhaust duct (140) is formed between the air regulating seat (120) and the inner wall of the air guide tube (100), an exhaust port (141) is formed between the rear end of the exhaust duct (140) and the rear end of the air guide tube (100), and the width of the exhaust port (141) is smaller than the width of the spacing between the front end of the exhaust duct (140) and the inner wall of the air guide tube (100); when the operating wind speed is higher than the rated maximum wind speed, the air regulating door (130) is driven by the electric motor to leave the inner wall of the air guide tube (100), and the wind beam is discharged from the exhaust duct (140) to release the wind.

7. The dual-axis coupled vertical axis breeze power generation device according to claim 6, characterized in that: Air guide grooves (111) are symmetrically provided in the middle of both sides of the air guide seat (110); an air regulating groove (121) is provided at the front end of the air regulating seat (120) and facing the side wall of the air guide seat (110); the cross-sections of the air guide grooves (111) and the air regulating grooves (121) are arc surfaces with the same center and radius; the air guide grooves (111) and the air regulating grooves (121) arranged opposite to each other are sleeved and matched with a wind wheel (210).

8. The dual-axis coupled vertical axis breeze power generation device according to claim 7, characterized in that: The front end of the air guide tube (100) is provided with an air induction slope (101) on the upper and lower sides, the inner side of the air induction slope (101) extends to the front end of the air adjustment seat (120), and the two inner side walls of the front end of the air guide tube (100) are provided with limiting grooves (102), and the front end of the air adjustment door (130) is snap-fitted with the limiting grooves (102).

9. The dual-axis coupled vertical axis breeze power generation device according to claim 8, characterized in that: The upper and lower ends of the wind wheel (210) are mounted on the magnetic suspension bearing (220), and through holes (103) are symmetrically provided on the upper and lower surfaces of the wind guide cylinder (100), and the through holes (103) are sleeve-fitted with the outer shell of the magnetic suspension bearing (220).

10. The dual-axis coupled vertical axis breeze power generation device according to claim 9, characterized in that: The magnetic levitation generators are two in number, and the two transmission shafts are coaxially connected to the central axes of the two wind wheels (210).

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