Wind deflector for vertical axis wind turbine blades

Abstract

The present invention discloses a wind deflector for the blades of a vertical-axis wind turbine, which relates to the field of wind power generation. The wind deflector can adjust its direction according to the wind direction, has a function of discharging wind, can make full use of wind energy, and effectively solves the problems put forward in the background technology. It includes a wind funnel. The wind funnel is integrally in the shape of a semi-cylindrical tube with openings at both transverse ends and the front side. A baffle is provided at the right port of the wind funnel. The baffle is semi-circular. The vertical end surface on the outer side of the baffle is hinged to the upper and lower ends of the wind funnel through hinges. A limiting block cooperating with the baffle is provided inside the right port of the wind funnel. A rotating shaft is vertically penetrated through the wind funnel on the left side of the hinge. A support rod is fixedly arranged between the upper and lower inner surfaces of the wind funnel on the left side of the rotating shaft. It has a simple structure and is convenient to use, and is applicable to various wind turbines.

Description

Technical Field

[0001] The present invention relates to the field of wind power generation, and particularly to a wind baffle for the blades of a vertical-axis wind turbine. Background Art

[0002] With the progress of technology and the development of society, wind power generation in China has developed rapidly, followed by the rapid development of vertical-axis wind turbines. As a clean and renewable energy source, wind energy has attracted increasing attention. Wind has been utilized by people for a long time, mainly for pumping water and grinding flour through windmills. Now, people are interested in how to use wind to generate electricity. Converting the kinetic energy of wind into mechanical kinetic energy and then into electrical kinetic energy is wind power generation. The principle of wind power generation is to use the wind to drive the rotation of the windmill blades, and then increase the rotation speed through a speed increaser to promote the generator to generate electricity. Since wind power generation does not require the use of fuel and does not produce radiation or air pollution, wind power generation is forming a boom around the world.

[0003] In the existing vertical-axis wind power generation system, the wind is mainly obtained by the blades. The principle is that the wind impacts from the front of the blades, and the blades obtain the lateral pressure of the wind to drive the wind wheel to rotate. However, at present, the wind baffles of many blades are fixedly arranged, unable to adjust the direction according to the wind direction, without the function of discharging wind, and unable to make full use of wind energy, having great limitations. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a wind baffle for the blades of a vertical-axis wind turbine. The wind baffle can adjust the opening and closing according to the wind direction, has the function of discharging wind, can make full use of wind energy, and effectively solves the problems put forward in the background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A wind baffle for the blades of a vertical-axis wind turbine, characterized in that: it includes a wind bucket. The wind bucket is in the shape of a semi-cylindrical tube with openings at both lateral ends and the front side. A baffle is provided at the right port of the wind bucket. The baffle is semi-circular. The vertical end face on the outer side of the baffle is hinged to the upper and lower ends of the wind bucket through hinges. A limiting block cooperating with the baffle is provided inside the right port of the wind bucket. A rotating shaft vertically penetrates through the wind bucket on the left side of the hinge. A support rod is fixedly arranged between the upper and lower inner surfaces of the wind bucket on the left side of the rotating shaft.

[0006] Preferably, the rotating shaft is eccentrically installed and is located on the right side of the middle position between the left and right of the wind bucket.

[0007] Preferably, when the baffle contacts the limiting block, the baffle and the wind bucket are in a vertically closed state.

[0008] Preferably, the distance between the hinge and the rotating shaft is less than the radius of the baffle.

[0009] Preferably, the number of the limiting blocks is at least one, and they are respectively in the shape of a cuboid, and are circumferentially spaced or continuously and evenly distributed on the inner surface of the wind bucket.

[0010] Preferably, the number of the support rods is at least one, and they are spaced left and right.

[0011] Compared with the prior art, the present invention provides a wind baffle for the blade of a vertical-axis wind turbine, and has the following beneficial effects:

[0012] 1. In the present invention, a baffle is provided at the right port of the wind bucket. The baffle is semicircular. The vertical end surface on the outer side of the baffle is hinged to the upper and lower ends of the wind bucket through a hinge. A limiting block matching the baffle is provided on the inner side of the right port of the wind bucket. A rotating shaft is vertically penetrated through the wind bucket on the left side of the hinge. A support rod is fixedly arranged between the upper and lower inner surfaces of the wind bucket on the left side of the rotating shaft. During use, when the front side of the wind bucket is stressed, that is, when it is in the wind-receiving state, the baffle can be blown outward, so that the baffle rotates outward around the hinge and stops at the limiting block, being in a closed state. The baffle forms a 90-degree angle with the wind bucket. At this time, the wind bucket receives the incoming wind to the greatest extent, and the blade does work and converts it into kinetic energy, achieving the effect of making full use of wind energy. As the blade rotates, the angle of the wind bucket also rotates accordingly. When it is in the wind-discharging state, the baffle is freely affected by the wind and is in an open state. The baffle forms a 0-degree angle with the wind bucket, reducing the wind reception and not doing work.

[0013] 2. In the present invention, the rotating shaft is eccentrically installed on the right side of the middle position between the left and right of the wind bucket. During use, the benefit of the eccentric installation of the rotating shaft is that when the wind bucket is affected by the wind, the wind bucket can rotate due to uneven forces on both sides of the rotating shaft.

[0014] 3. In the present invention, the distance between the hinge and the rotating shaft is less than the radius of the baffle. During use, the function of this structure is that when the baffle is in the open state (the baffle forms a 0-degree angle with the wind bucket), the rotating shaft can play a limiting role on the baffle to prevent it from rotating to the outside of the wind bucket. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view structural schematic diagram of the present invention;

[0016] Figure 2 is the structural schematic diagram of another angle of the present invention;

[0017] Figure 3 is Figure 1 the enlarged structural schematic diagram at A in

[0018] Figure 4 is the usage state diagram of the present invention.

[0019] In the figure: 1. Wind bucket; 11. Limiting block; 2. Baffle; 21. Hinge; 3. Rotating shaft; 4. Support rod. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] As Figures 1 to 4 shown, a wind deflector for a vertical axis wind turbine blade includes a wind funnel 1. The wind funnel 1 is integrally in the shape of a semi-cylindrical tube with openings at both lateral ends and the front side. A baffle 2 is provided at the right port of the wind funnel 1. The baffle 2 is semi-circular, and the arc surface matches the inner surface contour of the wind funnel 1. The vertical end surface on the outer side of the baffle 2 is hinged to the upper and lower ends of the wind funnel 1 through a hinge 21. A limiting block 11 that cooperates with the baffle 2 is provided inside the right port of the wind funnel 1. A rotating shaft 3 (installed at the upper and lower ends on a blade frame (not shown in the figure)) vertically penetrates through the wind funnel 1 on the left side of the hinge 21. A support rod 4 is fixedly provided between the upper and lower inner surfaces of the wind funnel 1 on the left side of the rotating shaft 3 (which plays a role in supporting and fixing the wind funnel 1 and is beneficial to the overall stability of the wind funnel 1).

[0022] In the above embodiment, specifically, the rotating shaft 3 is eccentrically installed and is located on the right side of the middle position between the left and right of the wind funnel 1.

[0023] In the above embodiment, specifically, when the baffle 2 contacts the limiting block 11, the baffle 2 and the wind funnel 1 are in a vertically closed state.

[0024] In the above embodiment, specifically, the distance between the hinge 21 and the rotating shaft 3 is less than the radius of the baffle 2.

[0025] In the above embodiment, more specifically, in this embodiment, the number of the limiting blocks 11 is three, which are respectively in the shape of a cuboid and are circumferentially spaced or continuously and evenly distributed on the inner surface of the wind funnel 1.

[0026] In the above embodiment, more specifically, in this embodiment, the number of the support rods 4 is 2, and they are spaced left and right.

[0027] Working principle: When the front side of the wind scoop 1 is subjected to force, that is, when it is in the wind-receiving state, the baffle 2 can be blown outward, causing the baffle 2 to rotate outward around the hinge 21 and stop at the limit block 11, being in the closed state. The baffle 2 forms a 90-degree angle with the wind scoop 1. At this time, the wind scoop 1 receives the incoming wind to the greatest extent, and the blades do work to convert it into kinetic energy, achieving the effect of making full use of wind energy. As the blades rotate, the angle of the wind scoop 1 also rotates accordingly. When in the wind-discharging state, the baffle 2 is freely subjected to the wind and is in the open state. The baffle 2 forms a 0-degree angle with the wind scoop 1, reducing the wind reception and not doing work. Specifically, the rotating shaft 3 is eccentrically installed. The advantage is that when the wind scoop 1 is subjected to wind, the wind scoop 1 can rotate due to uneven forces on both sides of the rotating shaft 3. When the baffle 2 is in the open state (the baffle 2 forms a 0-degree angle with the wind scoop 1), the rotating shaft 3 can play a limiting role on the baffle 2 to prevent it from rotating outside the wind scoop 1.

[0028] The components used in the present invention are all common standard components or components known to those skilled in the art, and their structures and principles are well-known to those skilled in the art.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind deflector for a vertical axis wind turbine blade, characterized in that The wind scoop (1) is horizontally oriented as a semi-cylindrical shape with openings at both ends and the front side. It is hinged to the wind deflector (2) via a hinge (21). There is a limit block (11) at the right port of the wind scoop (1) for cooperation with the wind deflector (2). The rotating shaft (3) is located at the golden section point on the right side of the wind scoop (1), and the support rod (4) is located at the golden section point on the left side of the wind scoop. The wind scoop is arranged in the frame of the wind turbine mechanism. Its structure mainly includes four parts: the wind scoop frame, the wind scoop rotating shaft (3), the movable wind scoop (1), and the limit block (11). The wind scoop (1) is installed offset from the longitudinal centerline, that is, the areas of the two parts of the wind scoop (1) on both sides of the wind scoop rotating shaft (3) are different. The wind scoop (1) is designed as a semi-cylindrical shape and is made of 304 stainless steel. When the front side of the wind scoop (1) is stressed, that is, when it is in the wind-receiving state, it can blow the wind deflector (2) outward, causing the wind deflector (2) to rotate outward around the hinge (21) and stop at the limit block (11), being in a closed state. The wind deflector (2) forms a 90-degree angle with the wind scoop (1). At this time, the wind scoop (1) receives the incoming wind to the greatest extent, and the blades do work to convert it into kinetic energy, achieving the effect of making full use of wind energy. As the blades rotate, the angle of the wind scoop (1) also rotates accordingly. When in the wind-discharging state, the wind deflector (2) is freely exposed to the wind and is in an open state. The wind deflector (2) forms a 0-degree angle with the wind scoop (1), reducing the wind reception and not doing work. The rotating shaft (3) is eccentrically installed. The wind scoop has a greater resistance when moving with the wind and a smaller resistance when moving against the wind, which can better utilize the wind power and improve the power generation efficiency.

2. The wind deflector of a vertical axis wind turbine blade according to claim 1, characterized in that The wind deflector (2) is hinged to the wind scoop (1) via a hinge (21).

3. The wind deflector of a vertical-axis wind turbine blade according to claim 1, characterized in that The distance from the hinge (21) to the rotating shaft (3) is less than the radius length of the wind deflector (2). By cooperating with the limit block (11), the movement area of the wind deflector (2) is restricted.

4. The wind deflector of a vertical axis wind turbine blade according to claim 1, characterized in that The wind deflector (2) can effectively achieve the conversion between pressure increase and pressure relief at different positions during the movement of the wind scoop (1).

5. The wind deflector of a vertical axis wind turbine blade according to claim 1, characterized in that The lubrication method of the hinge (21) is graphite powder lubrication, which has high stability, good lubrication effect, and a long maintenance cycle.

6. The wind deflector of a vertical axis wind turbine blade according to claim 1, characterized in that There are three limit blocks (11) evenly distributed and are in the shape of a cuboid.

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