KR100620948B1 - Wind turbine - Google Patents

Abstract

The present invention relates to a wind power generator, and an object thereof is to provide a wind power generator having a wing having an improved structure to reduce the rotational resistance caused by the wing to increase the power generation efficiency of the wind power generator. In accordance with an aspect of the present invention, a wind power generator includes: a support member including a lower pedestal fixed to a ground and a cylindrical protrusion formed perpendicularly to an upper portion thereof; A rotating cylinder rotatably supported by the protrusion in a structure surrounding the protrusion; A rotating shaft installed to rotate together with the rotating cylinder at the center of the rotating cylinder; An upper bearing installed at the rotating shaft to support the rotating cylinder; A lower bearing installed on the lower support to support the rotating cylinder; A plurality of wings are installed along the outer circumference of the rotating cylinder to have an equiangular interval therebetween and are spread out to the outside of the rotating cylinder according to a relative positional relationship with the wind direction, or folded to be in close contact with the outer circumferential surface of the rotating cylinder; Technical aspect of the present invention relates to a wind turbine having an angle limiting means for limiting the spreading of the blade above a set angle.

Wind power generator, wing, cloth, rotating cylinder, rolling resistance

Description

Wind generators

1 is a perspective view showing a conventional wind power generator,

2 is a plan view of FIG.

3 is a perspective view of a wind turbine according to a first embodiment of the present invention;

4 is an exploded perspective view of FIG. 3;

5 is a cross-sectional view of the wind power generator shown in FIG.

6 is a plan view of FIG. 3;

FIG. 7 is a detailed view of portion 'A' of FIG. 3;

8 is a front view of the wing shown in FIG.

9 is a perspective view of a wind turbine according to a second embodiment of the present invention;

10 is a side view of FIG. 9;

FIG. 11 is a sectional view showing a configuration of fixing means for fixing the cloth shown in FIG. 9 to a rotating cylinder; FIG.

<Description of the symbols for the main parts of the drawings>

110: support member 111: lower support

(112): protrusion 120: rotating cylinder

130: shaft 140: upper bearing

150: lower bearing 160: wing

161: frame 162: cloth

(170): angle limiting means (180): generator

190: storage battery 210: rotating cylinder

(211): Cylindrical portion 212 (213): Expansion portion

220: wings 230: fastening cloth

(240): fixing means (241): fixing groove

(242): fixing bar (243): bolt

The present invention relates to a wind power generator, and more particularly, to a wind power generator provided in a rotating cylinder to reduce the rotational resistance by the blades to provide a rotational force of the rotating cylinder, which can realize a high power generation efficiency.

In general, many wind turbine generators that generate electricity by using wind power are being researched as alternative energy sources as resources such as oil, coal, and natural gas are depleted due to industrial development and population growth.

On the other hand, generally used horizontal wind power generator is composed of a rotor having a plurality of blades on the upper end of the structure erected high from the ground. The horizontal wind power generator is a rotor rotates by the force of the wind, the mechanical energy generated by the rotation of the rotor is transferred to the generator to convert into electrical energy to generate electricity.

However, in order to maintain stable power generation conditions, such a horizontal wind turbine must be positioned at a high altitude close to the normal flow, which causes excessive increase in the structure supporting the rotor. High risk, and has a lot of difficulties in the maintenance and repair of rotors, generators and various major parts. In addition, it is possible to generate power only when the minimum wind speed is 5-6m / sec or more due to the structure of the rotor, and the direction of the rotor must be manually adjusted according to the direction of blowing. Efficiency cannot be expected, and furthermore, during a typhoon or a gust, there is a problem that the operation must be stopped in order to prevent breakage of components.

Korean Patent Application No. 2004-0075991 filed by the present applicant in consideration of the problems as described above discloses a wind power generator having an improved structure. 1 and 2 show the disclosed wind turbine. 1 and 2, the disclosed wind power generator is provided with a plurality of wind vanes 21 on the outer circumference of the rotating cylinder 20 installed in a structure surrounding the support shaft 10, each of the wind vanes 21 Are provided with a plurality of horizontal lattice and vertical lattice, and rotation direction control blades 31 for opening or closing a certain number of lattice of the lattice are provided on one surface of the wind vane 30. It consists of. Such a wind power generator, when the grid of the rotary blade 30 located on either side of the rotary cylinder 20 is closed by the rotation direction control blades 31 to receive the force of the wind, the rotary blade 30 located on the opposite side The grids of `) are open, but there is a problem that the loss of energy occurs due to the air resistance generated by the vertical grid and the horizontal grid forming the grid.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a wind power generator having a wing of an improved structure to reduce the rotational resistance by the wing to increase the power generation efficiency of the wind power generator.

Another object of the present invention is to provide a wind power generator capable of electric power generation at high efficiency by using a strong wind without fear of damage due to typhoons or gusts.

The present invention to achieve the object as described above and to solve the conventional drawbacks is a support member consisting of a lower pedestal fixed to the ground, and a cylindrical protrusion extending vertically upwardly from the upper surface of the lower pedestal In the wind generator for generating electricity by using wind power,

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A rotating cylinder rotatably supported by the protrusion in a structure surrounding the protrusion;

A rotating shaft disposed to extend in a vertical direction at the center of the rotating cylinder and installed in the rotating cylinder to rotate together with the rotating cylinder to transfer mechanical energy generated by the rotation of the rotating cylinder to the generator;

An upper bearing installed between the rotation cylinder and the protrusion to support rotation of the rotation cylinder;

A lower bearing installed between the rotating cylinder and the lower pedestal to support the rotating cylinder from below;

A plurality of wings are installed along the outer circumference of the rotating cylinder to have an equiangular interval therebetween and are spread out to the outside of the rotating cylinder according to a relative positional relationship with the wind direction, or folded to be in close contact with the outer circumferential surface of the rotating cylinder; And

It characterized in that the wind turbine having a; angle limiting means for limiting the spreading of the blade above the set angle.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

3 to 5 show a wind turbine according to a first embodiment of the present invention. 3 and 5, the wind power generator according to the first embodiment of the present invention includes a support member 110, a rotating cylinder 120, a rotating shaft 130, an upper bearing 140, and a lower portion. It is composed of a bearing 150, a plurality of wings 160, and the angle limiting means 170. The wind generator is configured such that the plurality of wings 160 are extended to the outside of the rotating cylinder 120 or in close contact with the outer circumferential surface of the rotating cylinder 120 according to the relative positional relationship with the wind.

The support member 110 is fixed to the ground to support the rotation of the rotary cylinder 120, it is composed of a lower pedestal 111 and the protrusion (112). The lower pedestal 111 is fixed to the ground is configured to support the components constituting the wind turbine. The protrusion 112 is formed in a structure that protrudes vertically upward from the upper surface of the lower pedestal 111, and has a hollow cylindrical structure inside.

The rotating cylinder 120 is supported by the protrusion 112 to rotate by the wind, the protrusion 112 is formed of a cylindrical structure wrapped around the protrusion 112 is installed, with a center around the protrusion 112 It is configured to be rotatable.

The rotating shaft 130 is to transfer the mechanical energy generated during the rotation of the rotating cylinder 120 to the generator 180, is disposed to extend in the vertical direction from the center of the rotating cylinder 120, the rotating cylinder 120 It is connected to the rotary cylinder 120 to rotate with. The rotary shaft 130 is formed so that the lower end thereof extends or penetrates into the lower pedestal 111, and a pair of gears 181 and 182 for increasing the speed are provided at the lower end thereof to transfer mechanical energy to the generator 180. Consists of. In the figure, reference numeral 190 denotes a storage battery.

The upper bearing 140 is positioned between the rotation cylinder 120 and the protrusion 112 to support the rotation of the rotation cylinder 120, and is installed in the protrusion 112.

The lower bearing 150 supports the rotating cylinder 120 from the bottom, and is installed on the lower pedestal 111.

6 to 8 show the wing 160 in more detail. 6 to 8, the wings 160 are provided with a force for the rotation of the rotary cylinder 120 by the force of the wind, the mutual isometric intervals along the outer periphery of the rotary cylinder 120 It is installed to have a plurality, and is configured to be expanded or folded depending on the relative position relationship with the wind direction. More specifically, each wing 160 is composed of a cloth 162 or artificial leather is installed inside the frame 161 connected to all sides to have a rectangular frame shape. At this time, the frame 161 is formed to have a rectangular frame shape, has a planar structure bent to have a curvature corresponding to the radius of the rotation cylinder 120, one side thereof is hinged to the rotation cylinder 120 to be unfolded It is configured to be able to rotate or be folded. Each wing 160 is unfolded when the concave surface 160a of the wing 160 is located in a direction facing the wind, and the other surface 160b of the convex of the wing 160 is located in a direction facing the wind. When folded, it is folded.

The angle limiting means 170 prevents each blade 160 from being unfolded at a set angle or more, and is not hinged to the other side of the rotary cylinder 120 and the blade 160, that is, the rotary cylinder 120. By connecting the remaining sides of the wing 160, which prevents the wing 160 from being expanded beyond the set angle, the angle limiting means 170 may be composed of a conventional spring or rope, preferably aramid It consists of a rope made of fiber material. As a rope made of aramid fibers is used, it is able to withstand a large load while reducing weight.

Referring to the operation of the wind turbine configured as described above are as follows.

If it is assumed that the wind blowing in the direction as shown in Figure 6, the blades 160 are disposed on the right side in the drawing and the concave one surface (160a) of the wing 160 in the direction facing the wind is a rotating cylinder The rotational movement is extended to protrude to the outside of the 120 to provide the force to rotate the rotary cylinder 120 under the force of the wind. At this time, each wing 160 is restrained by the rotation cylinder 120 by the rope is prevented from spreading over a certain angle.

On the other hand, the wings 160 are disposed on the left side in the drawing facing the wind and the convex other surface 160b of the wing 160 is folded in close contact with the outer circumferential surface of the rotating cylinder 120 to the There is no resistance to block rotation.

As such, only the wings 160 that receive the force of the wind to face the wind are unfolded, thereby preventing an increase in rotational resistance as the undesired wings 160 are unfolded.

9 and 10 illustrate a wind turbine according to a second embodiment of the present invention. 9 and 10, the wind power generator according to the second embodiment of the present invention includes a support member 110, a rotating cylinder 210, a rotating shaft 130, an upper bearing 140, and a lower bearing. 150, a plurality of wings 220, and a fixing cloth 230. Meanwhile, since the support member 110, the rotation shaft 130, the upper bearing 140, and the lower bearing 150 are the same as those of the first embodiment described above, detailed descriptions thereof will be omitted and the same reference numerals will be used. do.

The rotary cylinder 210 may be formed in a cylindrical structure surrounding the protrusion 112 of the support member 110 as described in the first embodiment, but the structural features of the wing 220 according to the present embodiment In order to make full use, it is formed in a shape similar to the janggu. That is, the rotating cylinder 210 is composed of a cylindrical portion 211 which is formed with the same diameter continuously, and expansion portions 212 and 213 extending outwardly so as to have a larger diameter gradually from both ends of the cylindrical portion 211. do.

The plurality of blades 220 are installed to have a mutually equidistant interval on the outer periphery of the rotating cylinder 210, each wing 220 is fixed to one side 220a, the top side 220b and the bottom side 220c of the wing 220 is fixed. An open end fixed to the rotating cylinder 210 by the means 240, and the other side 220d of the other side facing the fixed side 220a fixed to the rotating cylinder 210 is not fixed to the rotating cylinder 210. It is 240 and consists of cloth which has a longer length compared with one side 220a. In other words, each wing 220 is configured to be fixed to the outer circumferential surface of the rotating cylinder 210 to have a shape that is partly opened and receives the wind, such as a cloth-like bag. On the other hand, one side of the cloth (220a) is fixed to the cylindrical portion 211 of the rotating cylinder 210, the top side of the cloth (220b) and the bottom (220c) is fixed to the expansion (212, 213).

11 shows the configuration of the fixing means 240. Referring to FIG. 11, the fixing means 240 includes a fixing groove 241, a fixing bar 242, and a plurality of bolts 243. The fixing groove 241 is a cylindrical portion 211. And it is formed to extend in the longitudinal direction of the rotary cylinder 210 on the surface of the expansion portion (212, 213), and preferably has a circular cross section. The fixing bar 242 is inserted into the fixing groove 241 in the state that each side (220a, 220b, 220c) of the blade 220 is inserted into the fixing groove 241, the blade 220 is rotated cylinder 210 It is configured to fix to). The plurality of bolts 243 are fastened to penetrate the fixing bar 242 from the outside in a state where the fixing bar 242 is inserted into the fixing groove 241 so that the fixing bar 242 is separated from the fixing groove 241. Will be prevented.

The fixing cloth 230 is to fix the center of the wing 220 to expand in a predetermined distance range with the rotation cylinder 210, the center of the other side (220d) located on the open end 240 side of the cloth And the rotating cylinder 210 is configured to connect.

When the wings 220 of the second embodiment configured as described above are positioned with the open end 240 in a direction facing the wind, the wind enters the inside of the wing 220, and the wings 220 are expanded and rotated. Generates a force for the rotation of the cylinder 210, at this time another wing 220 located on the opposite side of the rotating cylinder 210 is rotated to maintain the contracted state because the open end 240 does not face the wind There is no resistance to block the rotation of the cylinder (210).

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

As described above, according to the present invention, the wings are unfolded or folded according to the relative positional relationship between the direction of the wind and the wings, thereby minimizing the rotational resistance caused by the blades that do not generate rotational force, so that smooth electric power generation is possible even in a region where the wind is weak. It became. Moreover, it is possible to provide a wind power generator with low facility cost, easy maintenance and repair, and relatively safe power generation during a typhoon or gust.

Claims (6)

In the wind power generator having a lower pedestal fixed to the ground, and a support member consisting of a cylindrical protrusion extending vertically upwardly from the upper surface of the lower pedestal, generating electricity using wind power, A rotating cylinder rotatably supported by the protrusion in a structure surrounding the protrusion; A rotating shaft disposed to extend in a vertical direction at the center of the rotating cylinder and installed in the rotating cylinder to rotate together with the rotating cylinder to transfer mechanical energy generated by the rotation of the rotating cylinder to the generator; An upper bearing installed in the protrusion so as to be positioned between the rotating cylinder and the protrusion to support rotation of the rotating cylinder; A lower bearing installed in the lower pedestal so as to be positioned between the rotary cylinder and the lower pedestal to support the rotating cylinder from below; A plurality of wings are installed along the outer circumference of the rotating cylinder to have an equiangular interval therebetween and are spread out to the outside of the rotating cylinder according to a relative positional relationship with the wind direction, or folded to be in close contact with the outer circumferential surface of the rotating cylinder; And And an angle limiting means for limiting the spread of the blade above a set angle. The method of claim 1, wherein each of the wings, It is formed to have a rectangular frame shape, and has a planar structure bent to have a radius of curvature corresponding to the radius of the rotating cylinder, one side of the hinge is coupled to the outer cylinder of the rotating cylinder is hinged to the rotating cylinder, or the rotating cylinder A frame extending to protrude outward of the frame; And Wind turbines, characterized in that consisting of a cloth or artificial leather installed inside the frame to cover the inner space of the frame. The method of claim 1, wherein the angle limiting means, Wind turbines, characterized in that consisting of a rope of fiber material connecting the rotating cylinder and the other side of the wing. The method of claim 1, wherein each of the wings, One side, the upper side and the bottom side is fixed to the rotating cylinder by the fixing means, the other side facing the one side is formed as a longer length than the one side to the open end so that the open end in the direction facing the wind. If it is expanded, and rotates the rotary cylinder by the force of the wind, when the open end is located in a direction that does not face the wind, the wind generator, characterized in that consisting of a cloth to reduce the rotational resistance of the rotating cylinder. The method of claim 4, wherein the rotating cylinder, A cylindrical part which is formed to have the same diameter continuously and provides a space in which one side of each wing is fixed; And an extension part formed to extend outwardly from both ends of the cylindrical part to have a larger diameter, thereby providing a space in which upper and lower sides of each wing are fixed. The other side of each of the wings, Wind turbine generator, characterized in that the center thereof is fixed to the rotating cylinder by a fixing cloth to expand within a certain distance range with the rotating cylinder.

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