Vertical-axis double-turbine breeze generator

Abstract

The utility model relates to a vertical-axis double-turbine breeze generator. The vertical shaft double-turbine breeze generator comprises a supporting assembly, a rotating blade assembly, an outer rotor generator assembly and a windward guide plate, the supporting assembly comprises a main bearing shaft, an auxiliary bearing shaft, an upper top plate and a lower top plate, and the main bearing shaft and the auxiliary bearing shaft are constructed to be of a vertical cylindrical structure; the upper top plate and the lower top plate are fixed to the upper end and the lower end of the main bearing shaft and the lower end of the auxiliary bearing shaft respectively, and the upper top plate and the lower top plate are constructed to be of a horizontal framework structure or a solid surface structure. The outer rotor generator assembly is arranged on the side, facing the rotating blade assembly, of the lower top plate, and an outer rotor of the outer rotor generator assembly is arranged to be mechanically connected with the rotating fixing shaft; the windward guide plate is constructed to be vertical and is fixed between the upper top plate and the lower top plate. According to the technical scheme, the power generation efficiency is improved, rotation unbalance is eliminated, noise is reduced, and rapid installation is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a vertical axis twin-turbine micro-wind generator. Background Art

[0002] With the continued growth of global energy demand and the increasing emphasis on renewable energy, wind power generation, as a clean and renewable energy utilization method, has received widespread attention and development. However, traditional horizontal-axis wind turbines have low efficiency in light wind environments and high installation and maintenance costs. Their economic viability is particularly limited in areas with unstable wind resources, such as cities and mountainous areas. Existing light wind turbines are mostly horizontal-axis or single-vertical-axis designs, and have problems such as high starting wind speeds, low conversion efficiency, high noise, and unstable rotation. While vertical-axis wind turbines can reduce dependence on wind direction to a certain extent, their power generation efficiency in light wind conditions still needs to be improved.

[0003] As a type of wind power generation equipment, vertical axis wind turbines (VAWTs) have received increasing attention and recognition in recent years. The main feature of this type of generator is that its main rotor shaft is perpendicular to the wind direction (but not necessarily completely perpendicular), thus realizing a completely new way of generating wind power. The design of vertical axis wind turbines is based on aerodynamic principles, using special wind tunnel simulations and blade shapes (such as aircraft wings) to ensure that the efficiency does not change due to deformation when the wind rotor rotates. Compared with traditional horizontal axis wind turbines (HAWTs), vertical axis wind turbines have some significant advantages. For example, their relatively simple structure makes maintenance and repair more convenient; at the same time, vertical axis wind turbines can achieve 360-degree power generation without blind spots, and are not restricted by wind direction; in addition, due to their low rotation speed, they cause less harm to birds and do not require oil lubrication, so they do not pollute the environment.

[0004] In terms of technical principles, vertical axis wind turbines use wind power to rotate the wind rotor, and then reduce the speed of the wind rotor through the generator reducer, converting the wind power into electrical energy. However, vertical axis wind turbines also have some challenges and limitations. For example, in areas with low wind speeds, it may be more difficult to generate electricity. In addition, existing breeze generators have low power generation efficiency, high noise, and high cost. In addition, traditional vertical axis breeze generators generally have a single head, which is greatly affected by the size of the wind, and the rotation is unstable and noisy. Therefore, it is necessary to improve the power generation efficiency while also hoping to reduce the cost and reduce the operating noise. In addition, in the existing technology, vertical axis wind turbines also have the problems of unstable installation, unstable rotation, and the risk of shaft deformation or failure in the case of a long axis.

[0005] Therefore, the existing technology still needs to be improved and enhanced.

[0006] It should be noted that the above introduction to the technical background is merely intended to provide a clear and complete description of the technical solutions of this application and facilitate understanding by those skilled in the art. Simply because these solutions are described in the background technology section of this application, it should not be assumed that the above technical solutions are well known to those skilled in the art. Utility Model Content

[0007] In order to solve one or more of the above technical problems, such as the difficulty of starting at low wind speeds, low power generation efficiency, rotational imbalance, high noise and other problems, the present invention provides a vertical axis twin-turbine breeze generator, which aims to reduce the starting wind speed, improve power generation efficiency, eliminate rotational imbalance, reduce noise, and quickly install.

[0008] In a first aspect of the present disclosure, a vertical axis twin-turbine micro-wind generator is proposed, which includes: a support assembly, including a main load-bearing shaft, a secondary load-bearing shaft, an upper top plate and a lower top plate, the main load-bearing shaft and the secondary load-bearing shaft are constructed into a vertical columnar structure, the upper top plate and the lower top plate are respectively arranged to be fixed to the upper end and the lower end of the main load-bearing shaft and the secondary load-bearing shaft, and the upper top plate and the lower top plate are constructed into a horizontal skeleton structure or a solid surface structure; a rotating blade assembly is generally provided with two groups, the rotating blade assembly is configured to include a rotating fixed shaft and windward blades arranged on the side walls of the rotating fixed shaft, the rotating fixed shaft is arranged vertically, and the rotating fixed shaft is configured to be aligned with the The upper top plate is rotatably connected and the rotating fixed shaft is configured to be rotatably connected to the lower top plate through an outer rotor generator assembly, and the windward blades are configured to be spirally shaped; the outer rotor generator assembly is arranged on the side of the lower top plate facing the rotating blade assembly, and the outer rotor of the outer rotor generator assembly is configured to be mechanically connected to the rotating fixed shaft; the windward deflector is constructed in a vertical shape and is configured to be fixed between the upper top plate and the lower top plate, and the windward deflector and the rotating fixed shafts of the two groups of rotating blade assemblies are configured to surround the main load-bearing axis, wherein in the windward direction, the windward deflector is configured to simultaneously block the parts of the two groups of rotating blade assemblies that are close to each other.

[0009] Furthermore, in some embodiments, the secondary load-bearing shafts are generally provided in two, and the two secondary load-bearing shafts, the main load-bearing shaft and the rotation fixing shaft are mechanically fixed between the upper top plate and the lower top plate.

[0010] Furthermore, in some embodiments, the secondary load-bearing shaft is disposed on a side of the windward deflector facing the main load-bearing shaft and is located in an area where the windward deflector shields portions of the two groups of rotating blade assemblies that are close to each other.

[0011] Furthermore, in some embodiments, the secondary load-bearing shaft and the rotationally fixed shaft are arranged to surround the primary load-bearing shaft.

[0012] Furthermore, in some embodiments, the distance from the central axis of one of the two secondary load-bearing shafts to the central axis of the main load-bearing shaft is equal to the distance from the central axis of the other of the two secondary load-bearing shafts to the central axis of the main load-bearing shaft.

[0013] Furthermore, in some embodiments, the lower top plate is configured to be connected to the mounting bracket via a rotating main bearing.

[0014] Furthermore, in some embodiments, the outer rotor generator assembly is configured as a disc-type magnetic levitation outer rotor motor.

[0015] Furthermore, in some embodiments, the windward deflector is constructed to have a structure in which the windward side is convex outward and the leeward side is concave inward.

[0016] Furthermore, in some embodiments, the rotating fixed shaft includes a rotating shaft mechanism and a fixed shaft mechanism, and the rotating shaft mechanism rotates around the fixed shaft mechanism through a bearing.

[0017] Furthermore, in some embodiments, the windward blade is constructed to consist of a wind knife and a fan blade, and two or more of the fan blades are arranged to be connected by the wind knife.

[0018] The beneficial effects of the present disclosure are:

[0019] In some embodiments, the support assembly forms a complete generator system, eliminating unstable rotation, loud noise, and operational issues. The windward deflector and mounting bracket rotation system automatically adjusts to wind direction, maximizing power generation efficiency. The windward deflector increases wind speed, concentrating wind energy on the active blades. A negative pressure zone is created behind the deflector, improving wind energy utilization and power generation efficiency. The two sets of rotating blades rotate relative to each other, eliminating rotational vibration and operational noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings, in which:

[0021] Figure 1 A diagram showing a vertical axis twin-turbine micro-wind generator according to an embodiment of the present disclosure;

[0022] Figure 2 A diagram illustrating a portion of a rotating blade assembly according to an embodiment of the present disclosure;

[0023] Figure 3 A diagram showing another perspective of a vertical axis twin-turbine micro-wind generator according to an embodiment of the present disclosure;

[0024] Figure 4 A diagram showing another perspective of a vertical axis twin-turbine micro-wind generator according to an embodiment of the present disclosure;

[0025] Figure 5 A diagram showing the working principle of a vertical axis twin-turbine micro-wind generator according to an embodiment of the present disclosure; and

[0026] In each of the accompanying drawings, the same or corresponding reference numerals represent the same or corresponding parts; wherein the reference numerals are: vertical axis twin-turbine micro-wind generator 100, support assembly 10, main load-bearing shaft 10-1, rotating main bearing 10-1-1, secondary load-bearing shaft 10-2, upper top plate 10-3, lower top plate 10-4, rotating blade assembly 20, rotating fixed shaft 20-1, windward blade 20-2, wind knife 20-2-1, fan blade 20-2-2, outer rotor generator assembly 20-5, windward deflector 30, mounting bracket 40. DETAILED DESCRIPTION

[0027] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0028] In the description of the embodiments of the present disclosure, the term "including" and similar terms should be understood as open inclusion, that is, "including but not limited to." The term "based on" should be understood as "based at least in part on." The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment." The terms "first," "second," etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0029] As described above, traditional resistance-type wind turbines suffer from low power generation efficiency, high noise levels, and high costs. Traditional wind turbines typically have a single head, which is significantly affected by wind speed, resulting in unstable rotation and loud noise. In particular, existing wind turbines, most of which are designed with a horizontal axis or a single vertical axis, suffer from problems such as high starting wind speeds, low conversion efficiency, high noise levels, and unstable rotation. While vertical-axis wind turbines can reduce their dependence on wind direction to a certain extent, their efficiency in light wind conditions still needs to be improved.

[0030] To solve at least one of the above problems and one or more of other potential problems, an exemplary embodiment of the present disclosure proposes a vertical axis twin-turbine micro-wind generator, which includes a support assembly, a rotating blade assembly, an outer rotor generator assembly, and a windward deflector.

[0031] The following is a further explanation with reference to the accompanying drawings and embodiments.

[0032] Figure 1 A diagram of a vertical axis twin-turbine micro-wind generator according to an embodiment of the present disclosure is shown. In the illustrated embodiment, the exemplary vertical axis twin-turbine micro-wind generator 100 includes: a support assembly 10, a rotating blade assembly (not fully shown), an outer rotor generator assembly 20-5, and a windward deflector 30. The support assembly 10 includes a main load-bearing shaft 10-1, a secondary load-bearing shaft 10-2, an upper top plate 10-3, and a lower top plate 10-4. The main load-bearing shaft 10-1 and the secondary load-bearing shaft 10-2 are constructed into a vertical columnar structure. The upper top plate 10-3 and the lower top plate 10-4 are respectively arranged to be fixed to the upper end and the lower end of the main load-bearing shaft 10-1 and the secondary load-bearing shaft 10-2. The upper top plate 10-3 and the lower top plate 10-4 are constructed into a horizontal skeleton structure or a solid surface structure. The hollow upper top plate 10-3 and the lower top plate 10-4 can reduce the overall weight of the entire device and reduce costs. Furthermore, the main load-bearing shaft 10-1, the secondary load-bearing shaft 10-2, the upper top plate 10-3 and the lower top plate 10-4, the main load-bearing shaft 10-1 and the secondary load-bearing shaft 10-2 form a cage structure, which makes the entire structure stable and can reduce vibration. The hollow structure can also achieve overall wind pressure resistance, and then reduce the purpose of reducing friction loss by reducing shaking or reducing changes in the support structure (it should be understood that when the support structure tilts in the forward, backward, left and right directions, changes occur between the various operating mechanisms, especially between the support shafts, resulting in changes in the original appropriate operating gap, and then increasing friction). Furthermore, two secondary bearing shafts 10-2 are provided. These two secondary bearing shafts 10-2, along with the primary bearing shaft 10-1 and the fixed rotating shaft 20-1, are mechanically fixed between the upper top plate 10-3 and the lower top plate 10-4. The secondary bearing shafts 10-2 strengthen the structural support between the upper top plate 10-3 and the lower top plate 10-4, making the entire structure more stable and less prone to shaking during operation. Furthermore, the secondary bearing shafts 10-2 and the fixed rotating shaft 20-1 are arranged around the primary bearing shaft 10-1. This strengthens the stability of the centrally located primary bearing shaft 10-1, preventing the entire structure from shaking in the front, back, left, and right directions along the primary bearing shaft 10-1, which could lead to operational instability, structural failure, and noise.

[0033] Furthermore, the illustrated embodiment further includes an outer rotor generator assembly 20-5, which is disposed on the side of the lower top plate 10-4 facing the rotating blade assembly, and the outer rotor of the outer rotor generator assembly 20-5 is configured to be mechanically connected to the rotating fixed shaft 20-1. Furthermore, the illustrated embodiment further includes a windward deflector 30, which is constructed in a vertical shape and is configured to be fixed between the upper top plate 10-3 and the lower top plate 10-4. The windward deflector 30 and the rotating fixed shafts 20-1 of the two sets of rotating blade assemblies 20 are configured to surround the main bearing axis 10-1, wherein in the windward direction, the windward deflector 30 is configured to simultaneously block the adjacent portions of the two sets of rotating blade assemblies.

[0034] Furthermore, in order to explain the rotating blade assembly in more detail, the following description is provided with reference to the accompanying drawings.

[0035] Figure 2 A diagram illustrating a portion of a rotating blade assembly according to an embodiment of the present disclosure is shown. In the illustrated embodiment, the rotating blade assembly 20 can generally be provided in two groups. The rotating blade assembly 20 is configured to include a rotating fixed shaft 20-1 and windward blades 20-2 arranged on the sidewall of the rotating fixed shaft 20-1. The rotating fixed shaft 20-1 is arranged vertically, is configured to be rotatably connected to an upper top plate (not shown), and is configured to be rotatably connected to a lower top plate (not shown) via an outer rotor generator assembly 20-5. The windward blades 20-2 are configured to be spirally arranged. Furthermore, in order to facilitate modular assembly, the windward blade 20-2 is constructed to consist of a wind knife 20-2-1 and a fan blade 20-2-2, and two or more fan blades 20-2-2 are arranged to be connected by a wind knife 20-2-1; in the illustrated embodiment, each windward blade 20-2 is composed of three fan blades 20-2-2 clamped by four wind knives 20-2-1.

[0036] In addition, as a further solution, it will be explained below with reference to the accompanying drawings.

[0037] Figure 3 、 4A diagram showing another perspective of a vertical-axis twin-turbine micro-wind generator according to an embodiment of the present disclosure is shown. In the illustrated embodiment, the distance between the central axis of one of the two secondary bearing shafts 10-2 and the central axis of the main bearing shaft 10-1 is equal to the distance between the central axis of the other of the two secondary bearing shafts 10-2 and the central axis of the main bearing shaft 10-1; and the windward deflector 30 is constructed with a structure in which the windward side is convex and the leeward side is concave. Furthermore, the lower top plate 10-4 is configured to be connected to the mounting bracket 40 via a rotating main bearing 10-1-1. This upper structure is connected to the mounting bracket via a rotating main bearing, ensuring structural safety while achieving quick installation, allowing for convenient rotation and facilitating automatic alignment of the device with the wind direction during operation. If the main bearing were directly plugged into the mounting base bearing, the structure would be unstable and would have obvious stress defects. Furthermore, the outer rotor generator assembly 20-5 is configured as a disc-type magnetic levitation outer rotor motor, and the outer rotor generator assembly 20-5 is arranged on the side of the lower top plate 10-4 facing the rotating blade assembly, and the outer rotor of the outer rotor generator assembly 20-5 is arranged to be mechanically connected to the rotating fixed shaft 20-1, thereby improving the system stability and power generation efficiency, commonly known as disc rotation; if shaft rotation is adopted, the motor is arranged under the bottom plate, and the energy transmission method is completely different, and the system stability is not as high as the above-mentioned disc rotation method, nor the power generation efficiency is as high as the above-mentioned disc rotation method. Furthermore, the rotating fixed shaft 20-1 includes a rotating shaft mechanism 20-1-1 and a fixed shaft mechanism 20-1-2, and the rotating shaft mechanism 20-1-1 rotates around the fixed shaft mechanism 20-1-2 through bearings; the two rotating fixed shafts 20-1 and the main load-bearing shaft 10-1 and the two secondary load-bearing shafts 10-2 form a main stable structure with the upper and lower top plates, the rotating shaft mechanism 20-1-1 and the fixed shaft mechanism 20-1-2 are connected with a rotating structure, the wind knife 20-2-1 is mechanically connected to the rotating shaft mechanism 20-1-1, and the whole is mechanically connected to the outer rotor generator assembly 20-5, so that the wind energy is transmitted through the fan blades 20-2-2, to the wind knife 20-2-1, to the rotating shaft mechanism 20-1-1, and to the outer rotor generator assembly 20-5, thereby improving the overall torque and power generation efficiency. Furthermore, in the above embodiment, a cage structure is formed by fixing the main load-bearing shaft 10-1, the two secondary load-bearing shafts 10-2, the two rotating fixed shafts 20-1 and the upper top plate 10-3 and the lower top plate 10-4, and the components can be modularized and standardized to achieve easy transportation and installation. In addition, the cage structure formed not only makes the structure stable and reduces vibration, but also can resist wind pressure as a whole and reduce friction loss.

[0038] In addition, as a solution to more clearly delete various embodiments, the following will be explained in conjunction with the accompanying drawings.

[0039] Figure 5The working principle diagram of the vertical axis twin-turbine micro-wind generator according to an embodiment of the present disclosure is shown. Figure 5 In the figure, a schematic diagram of the vertical axis twin-turbine breeze generator facing the wind (facing the incoming wind) is shown. In the embodiment shown in the figure, combined with Figure 1-4 The secondary load-bearing shaft 10-2 is located on the side of the windward deflector 30 facing the main load-bearing shaft 10-1, and is located in the area where the windward deflector 30 blocks the two sets of rotating blade assemblies 20 from approaching each other. By adding two windward deflectors and blocking the wind flowing to the back of the blades, negative pressure is formed in the area behind the windward deflector 30, naturally producing a Venturi effect. At the same time, wind energy is reflected and cut into the front of the blades (fan blades), solving the problem of areas with low wind speeds, which can increase wind energy utilization by 30% and power generation efficiency by 20-30%. Dual turbines are used to achieve dynamic balance and improve performance. The mounting bracket is equipped with a rotating bearing 9, which automatically aligns with the wind direction. This ensures that the system maintains optimal conditions from all directions under maximum wind speed. Wide range of applications: It is suitable for areas with unstable wind resources such as cities and mountainous areas, and has broad market application prospects. Wind that generates rotation on any vertical axis system will also generate resistance. In fact, the parabola driving side has greater airflow and force, thus generating resistance. When the baffle is set in front, the wind's path changes, and the resistance originally applied to the reverse side blades is transformed into power and added to the forward side, thereby increasing the wind speed.

[0040] It should be understood, referring to the above-mentioned figures, that if the rotating shaft mechanism is used as a rotating energy transmission structure and cannot participate in the stability of the system, and only relies on the main load-bearing shaft to stabilize the whole, it will cause the fan blades and the like to fly off under a certain wind speed. Furthermore, the rotating shaft mechanism must have a bearing structure when passing through the upper and lower top plates. It is necessary to ensure the concentricity of the bearings of the upper top plate, the lower top plate, and the motor. Misalignment will increase friction, affect the power generation efficiency or cause it to get stuck. When the rotating shaft mechanism is extremely short, the structure may not be a problem, but if it is more than one meter, when the wind speed exceeds 20 meters, the wind pressure with the vertical axis fan blades will exceed 100 kilograms per square meter, and the rotating shaft mechanism will deform and fail. In addition, it should be understood that the above-mentioned main load-bearing shaft 10-1 and the two secondary load-bearing shafts 10-2 and the rotating fixed shaft 20-1 can all be regarded as axisymmetric components, and their center of symmetry is the central axis. For example, the above-mentioned shaft structure is a cylindrical structure, and its central axis is the central axis of the cylindrical structure. It should also be understood that in the above embodiment, the upper and lower top plates are connected by a main load-bearing shaft, two secondary load-bearing shafts, and two rotating fixed shafts to form two stable support planes, and withstand the pressure of the motor blades' gravity and the direction of rotational vibration, and the installation deviation can be achieved in the millimeter level. It should also be noted that the present disclosure is not intended to improve the outer rotor generator assembly. It only requires the selection of an outer rotor generator assembly that is suitable for installation and can be adapted and coaxial with the rotating fixed shaft, wherein the outer rotor generator assembly can be a disc-type magnetic levitation outer rotor motor.

[0041] While various embodiments of the present disclosure have been described above, the foregoing description is intended to be illustrative, non-exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technological improvements in the marketplace, or to enable others skilled in the art to understand the embodiments disclosed herein.

[0042] The foregoing description is merely an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Those skilled in the art will readily appreciate that the present disclosure is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A vertical axis twin-turbine breeze generator, characterized in that: include: A support assembly includes a main load-bearing shaft, a secondary load-bearing shaft, an upper top plate, and a lower top plate, wherein the main load-bearing shaft and the secondary load-bearing shaft are configured as vertical columnar structures, the upper top plate and the lower top plate are respectively configured to be fixed to the upper end and the lower end of the main load-bearing shaft and the secondary load-bearing shaft, and the upper top plate and the lower top plate are configured as horizontal skeleton structures or solid surface structures; a rotating blade assembly, configured to include a rotating fixed shaft and a windward blade arranged on a side wall of the rotating fixed shaft, wherein the rotating fixed shaft is arranged vertically, the rotating fixed shaft is configured to be rotatably connected to the upper top plate and the rotating fixed shaft is configured to be rotatably connected to the lower top plate through an outer rotor generator assembly, and the windward blade is configured to be spirally arranged; The outer rotor generator assembly is arranged on the side of the lower top plate facing the rotating blade assembly, and the outer rotor of the outer rotor generator assembly is arranged to be mechanically connected to the rotating fixed shaft; The windward deflector is constructed in a vertical shape and is arranged to be fixed between the upper top plate and the lower top plate. The rotational fixed axis of the windward deflector and the two groups of rotating blade assemblies is arranged to surround the main load-bearing axis, wherein in the windward direction, the windward deflector is arranged to simultaneously block the parts of the two groups of rotating blade assemblies that are close to each other.

2. The vertical axis twin-turbine micro-wind generator according to claim 1, characterized in that: The secondary bearing shaft is configured to be mechanically fixed with the primary bearing shaft and the rotation fixing shaft between the upper top plate and the lower top plate.

3. The vertical axis twin-turbine micro-wind generator according to claim 2, characterized in that: The secondary load-bearing shaft is arranged on a side of the windward deflector facing the main load-bearing shaft and is located in an area where the windward deflector shields the parts of the two groups of rotating blade assemblies that are close to each other.

4. The vertical axis twin-turbine micro-wind generator according to claim 3, characterized in that: The secondary bearing shaft and the rotation-fixing shaft are arranged to surround the main bearing shaft.

5. The vertical axis twin-turbine micro-wind generator according to claim 4, characterized in that: The distance between the central axis of one of the two secondary load-bearing shafts and the central axis of the main load-bearing shaft is equal to the distance between the central axis of the other of the two secondary load-bearing shafts and the central axis of the main load-bearing shaft.

6. The vertical axis twin-turbine micro-wind generator according to claim 1, characterized in that: The lower top plate is configured to be connected to the mounting bracket via a rotating main bearing.

7. The vertical axis twin-turbine micro-wind generator according to claim 1, characterized in that: The outer rotor generator assembly is configured as a disc-type magnetically suspended outer rotor motor.

8. The vertical axis twin-turbine micro-wind generator according to claim 1, characterized in that: The windward deflector is configured to have a structure in which the windward side is convex outward and the leeward side is concave inward.

9. The vertical axis twin-turbine micro-wind generator according to claim 1, characterized in that: The rotating fixed shaft includes a rotating shaft mechanism and a fixed shaft mechanism, and the rotating shaft mechanism rotates around the fixed shaft mechanism through a bearing.

10. The vertical axis twin-turbine micro-wind generator according to claim 1, characterized in that: The windward blade is constructed to consist of a wind knife and a fan blade, and two or more fan blades are arranged to be connected by the wind knife.

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