Vertical axis wind turbine driving device with wind deflector

Abstract

The invention discloses a vertical axis wind turbine driving device with a wind deflector, and relates to the field of mechanical engineering, the driving device comprises a long shaft, a plurality of blades and a bearing assembly; the long shaft and all the blades form a wind wheel for driving the generator set to generate electricity; the wind deflector assembly is arranged on one side of the wind wheel; when the wind wheel rotates under wind power, the wind deflector assembly guides wind below the wind wheel to the upper portion of the wind wheel to form resultant force with wind acting on the upper portion of the wind wheel, driving torque generated by the wind wheel is enhanced, and the generator set is driven to generate power. The vertical-axis wind driven generator is very convenient to install and transport, the power generation efficiency of the vertical-axis wind driven generator is effectively improved, the blades are not prone to breakage and deformation, and meanwhile noise during working is effectively reduced. Therefore, compared with a traditional vertical axis wind driven generator driving device, the vertical axis wind driven generator driving device is more suitable for being popularized and applied in cities or areas with limited space, especially areas with rich wind energy.

Description

Technical Field

[0001] The invention relates to the field of mechanical engineering, and in particular to a vertical-axis wind turbine driving device with a wind deflector. Background Art

[0002] With the growing global demand for renewable energy, wind power generation is attracting more and more attention due to its clean and renewable characteristics. Although there are many types of wind turbines, they can be summarized into two categories: (1) horizontal axis wind turbines, where the rotor's axis of rotation is parallel to the wind direction; (2) vertical axis wind turbines, where the rotor's axis of rotation is perpendicular to the ground or the airflow direction (such as a sail-type). Traditional horizontal axis wind turbines have been widely used in areas with abundant wind resources, but their efficiency and stability are challenged in places such as cities and mountainous areas where wind resources are dispersed and wind directions are variable. Vertical axis wind turbines (VAWT) are a type of power generation equipment that does not need to face the wind directly (relying on wind direction and wind speed devices to automatically face the wind), has a low starting wind speed, and is quiet. Because they do not need to adjust the angle frequently like horizontal axis wind turbines, they can operate stably in environments with variable wind directions. They do not need to be installed on tall towers, but can be installed directly on the ground or on the top of a building, reducing installation difficulty and cost. Therefore, compared with horizontal axis wind turbines, they are more suitable for use in cities or areas with limited space.

[0003] The core of the vertical-axis wind turbine's drive lies in its sail-shaped blade design. Made of lightweight, high-strength materials and inspired by sailboats, these blades effectively capture wind and convert it into rotational energy. When wind blows over the sail-shaped blades, the thrust pushes them to rotate, driving the rotor inside the generator and generating electricity.

[0004] However, in practical applications, vertical axis wind turbine drive devices also have some problems that need to be solved, such as: (1) Low power generation efficiency. In existing vertical axis wind turbine drive devices, although the sail-shaped blade design can capture wind energy to a certain extent, due to the limitations of its structural design and material selection, the utilization efficiency of wind energy is not high. Especially when the wind speed is low or the wind direction is unstable, the power generation efficiency is greatly reduced, which directly affects the overall performance and economic benefits of the wind turbine. (2) Insufficient mechanical strength. During the operation of the vertical axis wind turbine, the blades need to withstand the impact of wind from all directions, so the mechanical strength requirements are very high. However, the existing blade materials are often difficult to meet this requirement, and the tail wing in the sail-shaped blade is long, so it is easy to break, deform, and other problems. This not only affects the normal operation of the generator, but also may bring safety hazards. (3) High noise. Although vertical axis wind turbines are less noisy than horizontal axis wind turbines, due to the long tail wing in the sail-shaped blade and the fact that they are located in cities or areas with limited space, the noise they generate still affects the quality of life of surrounding residents.

[0005] Therefore, it is necessary to improve the existing vertical axis wind turbine drive device in view of the above problems. Summary of the Invention

[0006] The invention discloses a vertical axis wind turbine drive device with a wind deflector, which can solve the problems of low power generation efficiency, insufficient mechanical strength and high noise in cities or areas with limited space in existing vertical axis wind turbine drive devices.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] A vertical axis wind turbine generator drive device with a wind deflector comprises a long axis and a plurality of blades arranged around the long axis and axially parallel to the long axis, and a bearing assembly connected to the long axis; the long axis and all the blades constitute a wind wheel for driving a generator set to generate electricity, and also comprises a wind deflector assembly arranged on one side of the wind wheel; when the wind wheel is rotated by wind force, the wind deflector assembly guides the wind from the lower part of the wind wheel that hinders the rotation of the wind wheel to the upper part of the wind wheel, forming a combined force with the wind acting on the upper part of the wind wheel, thereby enhancing the driving torque generated by the wind wheel and driving the generator set to generate electricity.

[0009] Furthermore, the blade is in the shape of a square.

[0010] Specifically, the wind guide plate assembly is arranged on a frame, and the wind guide plate assembly includes a first wind guide plate, a second wind guide plate, a third wind guide plate and a fourth wind guide plate arranged on the same side of the frame, wherein the second wind guide plate is positioned higher than the wind wheel and is arranged in an inclined downward direction; the first wind guide plate is positioned flush with the long axis and is arranged in an inclined upward direction; there are two third wind guide plates, and both are positioned lower than the long axis and are arranged in an inclined upward direction; the fourth wind guide plate is located at the bottom of the wind wheel, is hook-shaped, and is arranged in an inclined upward direction.

[0011] Furthermore, the bearing assembly is arranged on the frame.

[0012] Furthermore, the present invention also includes a steering control mechanism connected to the frame. When the wind direction changes, the frame and the wind wheel are controlled to rotate through the steering control mechanism, so that the relative positions of the first wind guide plate, the second wind guide plate, the third wind guide plate and the fourth wind guide plate and the wind wheel remain unchanged, and the wind wheel is always in the windward direction.

[0013] Specifically, the steering control mechanism includes a wind direction and speed device arranged on the top of the frame, a load-bearing turntable arranged at the center of the bottom of the frame, a circular ground rail located at the bottom of the frame, and walking support wheels connected to both sides of the bottom of the frame and forming an eccentric distance with the load-bearing turntable; the walking support wheels run on the circular ground rails.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0015] (1) During the operation of a vertical axis wind turbine drive device, when the wind blows from the front, the upper half of the rotor is subjected to a positive force, which can drive the rotor to rotate, but the lower half of the rotor is subjected to resistance, which will hinder the rotation of the rotor and thus affect the power generation efficiency of the entire generator set. Therefore, in order to overcome this resistance, the present invention designs a wind deflector assembly, which is arranged on one side of the rotor. The wind deflector assembly is used to guide the wind from the lower part of the rotor that hinders the rotation of the rotor to the upper part of the rotor, forming a combined force with the wind acting on the upper part of the rotor. In this way, the resistance that hinders the rotation of the rotor can be cleverly converted into driving force, thereby enhancing the driving torque generated by the rotor, thereby significantly improving the power generation efficiency of the generator set.

[0016] Furthermore, based on the wind deflector assembly, the present invention changes the shape of the traditional sail-shaped blades to a square body. This design, on the one hand, allows the wind deflector assembly to guide airflow more smoothly through the blades, facilitating the diversion of wind from the lower portion of the rotor to the upper portion, while reducing airflow turbulence and vortices. This allows the blades to generate greater lift under the action of wind, improving wind energy conversion efficiency and making the generator set's power generation more stable and reliable. Furthermore, by eliminating the use of long tail wings, the blades' force-bearing area is reduced, making them less susceptible to breakage and deformation, and effectively reducing operating noise.

[0017] (2) In the present invention, the positions and shapes of the first, second, third and fourth wind guide plates are carefully designed. First, the first, second, third and fourth wind guide plates are located on the same side of the wind wheel. Second, the fourth wind guide plate is located at the bottom of the wind wheel and is hook-shaped and arranged in an upward tilted direction. It can guide the wind at the bottom of the wind wheel to the wind wheel, and combined with the wind force near the blades, it can push the blades to rotate upward. Third, the second wind guide plate is located higher than the wind wheel and is arranged in a downward tilted direction. It can guide the wind above the wind wheel to the wind wheel. Finally, The first wind guide plate is positioned flush with the long axis and is arranged in an upwardly inclined direction. The third wind guide plate is positioned lower than the long axis and is also arranged in an upwardly inclined direction. The wind force close to the center of the wind wheel can be concentrated to push the blades closest to the first and third wind guide plates (pushed up by the wind force diverted by the fourth wind guide plate) to rotate, and connect with the wind force diverted from the top of the wind wheel, so that the blade can further obtain a greater and continuous rotational force. By repeating this cycle, each blade can obtain a greater rotational driving force, thereby improving the conversion efficiency of wind energy and making the power generation of the generator set more stable and reliable.

[0018] (3) The steering control mechanism provided by the present invention is a device that adds a load-bearing turntable, a travel support wheel and a circular ground rail to the existing wind direction and wind speed device. When the wind direction changes, the travel support wheel can be driven on the circular ground rail under the action of the wind direction and wind speed device, driving the frame to rotate in a circle with the load-bearing turntable as the center, so that the orientation of the wind deflector assembly and the wind wheel changes with the change of wind direction (always in the windward direction), and the relative position of the wind deflector assembly and the wind wheel remains unchanged. The design of the eccentric distance between the load-bearing turntable and the support travel wheel proposed by the present invention, combined with the setting of the circular ground rail, can cause the frame to rotate as a whole when the wind direction changes, thereby not only enabling the wind deflector assembly and the wind wheel to rotate synchronously with the change of wind direction, but also enabling the blade shape designed by the present invention to better generate lift.

[0019] (4) The various parts of the present invention are closely linked, complementary, and interconnected. This not only makes installation and transportation very convenient, but also effectively improves the power generation efficiency of the vertical-axis wind turbine. Furthermore, the blades are less likely to break or deform, and the operating noise is effectively reduced. Therefore, compared with conventional vertical-axis wind turbine drive devices, the present invention is more suitable for promotion and application in cities or areas with limited space, especially in areas with abundant wind energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an exploded schematic diagram of the device structure of Example 1 of the present invention.

[0021] Figure 2This is a schematic diagram of wind direction in Example 1 of the present invention.

[0022] Figure 3 This is a schematic diagram of the frame and wind wheel rotating as the wind direction changes in Example 1 of the present invention.

[0023] Figure 4 This is a structural diagram of Example 2 of the present invention.

[0024] The names of the parts corresponding to the reference numerals are as follows:

[0025] 1-long axis; 2-sail-shaped blade; 3-bearing assembly; 4-first wind deflector; 5-second wind deflector; 6-third wind deflector, 7-fourth wind deflector; 8-frame; 9-travel support wheel; 10-circular ground rail; 11-load-bearing turntable; 12-reducer generator assembly;

[0026] 13-Power distribution output control cabinet; 14-Wind direction and speed device. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the embodiments.

[0028] Example 1

[0029] This embodiment provides a vertical axis wind turbine driving device that can efficiently utilize surface winds below 50 meters to achieve wind power generation. Figure 1 As shown, the vertical axis wind turbine driving device mainly consists of a long axis 1 (ie, a vertical axis), blades 2, a wind deflector assembly, and a steering control mechanism.

[0030] In this embodiment, six blades 2 are arranged evenly around a longitudinal axis 1, with the axial direction of all blades parallel to the longitudinal axis 1. The longitudinal axis 1 and all blades form a wind rotor that drives the generator set to generate electricity. A bearing assembly 3 is provided at the end of the longitudinal axis 1. This bearing assembly 3 is connected to a reducer generator assembly 12, which in turn is connected to a power distribution output control cabinet 13. When wind drives the wind rotor, a driving torque is generated that drives the reducer generator assembly 12 to generate electricity, which is then output through the power distribution output control cabinet 13.

[0031] In this embodiment, the wind deflector assembly is located on one side of the wind rotor and is installed on the frame 8 (the long axis 1 is connected to the frame 8 through the bearing assembly 3). The function of the wind deflector is to guide the wind from the lower part of the wind rotor that hinders the rotation of the wind rotor to the upper part of the wind rotor, forming a combined force with the wind acting on the upper part of the wind rotor, thereby enhancing the driving torque generated by the wind rotor. Specifically, the wind deflector assembly includes a first wind deflector 4, a second wind deflector 5, a third wind deflector 6, and a fourth wind deflector 7, which are installed on the same side of the frame 8. Among them, the second wind deflector 5 is located higher than the wind rotor and is arranged in an inclined downward direction; the first wind deflector 4 is located at the same level as the long axis 1 and is arranged in an inclined upward direction; two third wind deflectors 6 are provided, and both are located lower than the long axis 1 and are arranged in an inclined upward direction; the fourth wind deflector 7 is located at the bottom of the wind rotor, has a hook shape, and is arranged in an inclined upward direction. Figure 2 The figure shows the principle that when the wind rotor rotates, the wind at the lower part of the wind rotor is diverted to the upper part of the wind rotor to form a resultant force by relying on the action of the wind deflector assembly. In the figure, M represents the total torque, which is composed of multiple torques M τ1 、M τ2 、M τ3 、M τ4 、M τ5 ...add together to get; F τ1 、F τ234 、F τ5 The wind force drawn by the second wind deflector, the combined wind force drawn by the first and third wind deflectors, and the wind force drawn by the fourth wind deflector are respectively: the wind force drawn by the second wind deflector, the combined wind force drawn by the first and third wind deflectors, and the wind force drawn by the fourth wind deflector. Specifically, first, the fourth wind deflector 7 is located at the bottom of the rotor. It is hook-shaped and tilted upward, directing the wind from the bottom of the rotor toward the rotor. Combined with the wind force near the blades, it drives the blades upward. Second, the second wind deflector 5 is located above the rotor and tilted downward, directing the wind from the upper portion of the rotor toward the rotor. Finally, the first wind deflector 4 is located flush with the long axis and tilted upward. The two third wind deflectors 6 are both located below the long axis and also tilted upward. They concentrate the wind force near the center of the rotor, driving the blades closest to the first and third wind deflectors 4 and 6 (pushed upward by the wind force drawn by the fourth wind deflector 7) to rotate. This then connects with the wind force drawn from the upper portion of the rotor, giving these blades further rotational force. This cycle repeats, allowing each blade to obtain a greater and continuous rotational driving force.

[0032] In addition, in order to cooperate with the wind guide plate assembly and guide the airflow to flow more smoothly through the blades, it is beneficial to guide the wind from the lower part of the wind wheel to the upper part of the wind wheel, and reduce the turbulence and vortex of the airflow, so that the blades can generate greater lift under the action of wind, improve the conversion efficiency of wind energy, and make the power generation of the generator set more stable and reliable. At the same time, it avoids blade breakage and deformation and reduces the noise when the blades are working. In this embodiment, the shape of the blades is designed to be square.

[0033] The steering control mechanism is used to achieve synchronous steering of the frame, the wind deflector assembly and the wind wheel. The steering control mechanism includes a wind direction and speed device 14 arranged on the top of the frame 8, a load-bearing turntable 11 arranged at the bottom center of the frame 8, a circular ground rail 10 located at the bottom of the frame 8, and a walking support wheel 9 connected to both sides of the bottom of the frame 8 and forming an eccentric distance with the load-bearing turntable 11. When the wind direction changes, the wind direction and speed device 14 applies force to the frame 8, causing the walking support wheel 9 at the bottom of the frame 8 to move on the circular ground rail 10. Since the load-bearing turntable 11 acts as a center point, the frame 8 as a whole and the wind wheel rotate simultaneously with the change of wind direction, so that the relative position of the wind deflector assembly and the wind wheel remains unchanged, and the wind wheel is always in the windward direction, such as Figure 3 As shown in the figure, M represents torque; F represents wind force, which can be decomposed into F x and F y ; R represents the lever arm.

[0034] In this way, through the design of effective blade shape, wind guide plate assembly and steering control mechanism, the vertical axis wind turbine drive device provided by the present invention is not only very convenient to install and transport, but also effectively improves the power generation efficiency of the vertical axis wind turbine, and the blades are not easy to break or deform, while also effectively reducing the noise during operation.

[0035] Example 2

[0036] The difference from Example 1 is that in this embodiment, the wind wheel and wind guide plate assembly are installed vertically, such as Figure 4 This embodiment can also achieve substantially the same technical effects as embodiment 1, and the description of this embodiment and embodiment 1 also demonstrates the flexibility and adaptability of the vertical axis wind turbine drive device in installation and use.

[0037] While this invention may appear simple, it is actually quite complex. Only by thoroughly understanding the driving principles and characteristics of wind turbines can a simple and effective solution significantly improve the efficiency of the generator set, making it more suitable for use in urban areas or other areas with limited space. Therefore, this invention possesses outstanding substantive features and represents a significant advancement.

[0038] The above-described embodiments merely represent specific implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of protection of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the technical concept of the present invention, and all such modifications and improvements fall within the scope of protection of the present invention.

Claims

1. A vertical axis wind turbine driving device with a wind deflector, comprising a long axis (1) and a plurality of blades (2) arranged around the long axis and axially parallel to the long axis, and a bearing assembly (3) connected to the long axis (1); the long axis (1) and all the blades constitute a wind wheel for driving a generator set to generate electricity, characterized in that: It also includes a wind guide plate assembly arranged on one side of the wind wheel; when the wind wheel is rotated by wind force, the wind guide plate assembly will guide the wind at the lower part of the wind wheel that hinders the rotation of the wind wheel to the upper part of the wind wheel, forming a combined force with the wind acting on the upper part of the wind wheel, thereby enhancing the driving torque generated by the wind wheel and driving the generator set to generate electricity.

2. A vertical axis wind turbine driving device with a wind deflector according to claim 1, characterized in that: The blade (2) is in the shape of a square.

3. A vertical axis wind turbine driving device with a wind deflector according to claim 2, characterized in that: The wind guide plate assembly is arranged on a frame (8), and comprises a first wind guide plate (4), a second wind guide plate (5), a third wind guide plate (6) and a fourth wind guide plate (7) which are arranged on the same side of the frame (8), wherein the second wind guide plate (5) is located higher than the wind wheel and is arranged in an inclined downward direction; the first wind guide plate (4) is located flush with the long axis (1) and is arranged in an inclined upward direction; two third wind guide plates (6) are arranged, and both are located lower than the long axis (1) and are arranged in an inclined upward direction; the fourth wind guide plate (7) is located at the bottom of the wind wheel, has a hook shape, and is arranged in an inclined upward direction.

4. A vertical axis wind turbine driving device with wind deflector according to claim 3, characterized in that: The bearing assembly (3) is arranged on a frame (8).

5. A vertical axis wind turbine driving device with wind deflector according to claim 4, characterized in that: It also includes a steering control mechanism connected to the frame (8). When the wind direction changes, the frame (8) and the wind wheel are controlled to rotate by the steering control mechanism, so that the relative positions of the first wind guide plate, the second wind guide plate, the third wind guide plate and the fourth wind guide plate and the wind wheel remain unchanged, and the wind wheel is always in the windward direction.

6. A vertical axis wind turbine driving device with wind deflector according to claim 5, characterized in that: The steering control mechanism comprises a wind direction and wind speed device (14) arranged on the top of a frame (8), a load-bearing turntable (11) arranged at the center of the bottom of the frame (8), a circular ground rail (10) located at the bottom of the frame (8), and a walking support wheel (9) connected to both sides of the bottom of the frame (8) and forming an eccentric distance with the load-bearing turntable (11); the walking support wheel (9) walks on the circular ground rail (10).

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