KR101525553B1 - Wind power generator with vertical rotor - Google Patents

Abstract

The present invention relates to a blade having a plurality of blades (100) installed perpendicularly to a ground surface and providing revolving rotational force with respect to wind in a lateral direction and revolving rotational force with respect to wind in a front direction; A rotor 110 installed to be rotated around the blade 100 and receiving the rotational force of the blade 100 and installed perpendicular to the ground; A central shaft 115 rotatably installed with the rotor 110 installed to adjust the angle of the blade 100 with respect to the wind direction and to provide a resistance against the rotating torque of the blade 100 and perpendicular to the ground; And a power transmitting means 120 for transmitting power between the blades 100 and the rotor 110. [

Description

[0001] WIND POWER GENERATOR WITH VERTICAL ROTOR [0002]

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a vertical rotor type wind power generator, and more particularly, to a vertical rotor type wind power generator in which a rotor rotated by wind is vertically disposed on the ground.

Conventional fixed-wing windmills or turbines constitute a wing that maintains a curved shape in moment support members of a horizontal or vertical drive shaft, and the wing is configured to rotate under wind force.

The horizontal axis type fixed wing wind turbine or turbine has a disadvantage that the driving efficiency is greatly reduced unless it is always facing the flow of the fluid.

Vertical shaft type fixed wing wind turbine or turbine has a closed end where the driving efficiency (power coefficient) is reduced due to the repulsive resistance generated on the wing side disposed in the locus of the position opposite to the flow of the fluid.

The vertical axis type wind turbine has a Darrieus type with two circular arched wings on the vertical axis, a Gyromill type wing with vertical symmetrical wings on the vertical axis and a semi-cylindrical wing And the Savonius type.

Darrieus has developed a new cylindrical reaction turbine with several straight and curved rotating blades and vertical drive shafts as opposed to a common wheeled turbine.

Although there have been many attempts to put the Darius spinning wheel (turbine) into practical use, it has been practically rarely used because it shows a relatively low efficiency compared to the high rotational speed.

On the other hand, A.G. Gorlov of the US Hydroelectric Power Research Institute developed a helical turbine in which several spiral rotating blades were arranged on a vertical rotating-axis rotating plate.

The vertical axis type wind turbine as described above has an advantage that it can operate irrespective of the direction of the wind, but has a disadvantage in that the efficiency in terms of the symmetrical structure of the blade is inferior. That is, when the side of the blade faces the wind direction and the front side, there is a problem that the drag due to the wind pressure is generated rather than the rotational force and the efficiency is lowered.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a vertical axis wind turbine which is capable of generating rotation torque of a blade and converting the rotation angle of the blade to a rotation direction of the rotor, And to provide a vertical rotor-type wind power generator capable of maximizing the revolving rotational force of the blades.

According to an aspect of the present invention, there is provided a vertical rotor-type wind turbine generator comprising: a central axis perpendicular to a ground; An adjusting mechanism connected to the center shaft to rotate or fix the center shaft along the wind direction; A rotor rotatably installed on the central shaft and connected to the generator side; A plurality of blades installed on the rotor side and rotatable, the blade having a predetermined length and perpendicular to the ground; And a power transmitting means supported on the rotor and the central shaft and supported by the blade and adapted to rotate the rotor by receiving a rotating force of the blade, wherein the blade has a symmetrical airfoil And the blade rotates by the lifting force by the lateral direction wind while rotating the rotor through the power transmitting means, and the blade is rotated by the wind in the front direction by the rotation of the rotor And generates a revolving torque that revolves around the center to rotate the rotor.

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In the vertical rotor type wind turbine generator according to the present invention as described above, several blades having a rotating torque are installed on a rotor, and the angle of the blades is adjusted in accordance with the rotation of the rotor to adjust the rotation torque and the revolving torque It is possible to obtain an effect of increasing the efficiency of the wind turbine by converting it into the rotational force of the rotor.

1 is a sectional view of a vertical rotor type wind power generator according to an embodiment of the present invention.
2 is a perspective view of a blade of a vertical rotor type wind power generator according to an embodiment of the present invention.
3A is a schematic plan view of a vertical rotor type wind power generator according to an embodiment of the present invention.
FIG. 3B is a plan view showing the phase of the blade according to the rotation of the rotor of the vertical rotor type wind power generator according to the embodiment of the present invention.
Figure 4 is a flow diagram of the air providing drag to the blade of Figure 3a.
Figure 5 is a flow diagram of the air generating lift for the blade of Figure 3a.
6 is a directional view illustrating operation of the vertical rotor type wind power generator according to an embodiment of the present invention.
7 is a schematic perspective view of a vertical rotor type wind power generator according to another embodiment of the present invention.
8 is a schematic front view of a vertical rotor type wind power generator according to another embodiment of the present invention.
9 is a schematic plan view of a vertical rotor type wind power generator according to another embodiment of the present invention.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views, and length and area, thickness, and the like may be exaggerated for convenience.

Hereinafter, a vertical rotor type wind power generator according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a sectional view of a vertical rotor type wind power generator according to an embodiment of the present invention, and FIG. 2 is a perspective view of a blade of a vertical rotor type wind power generator according to an embodiment of the present invention.

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Referring to FIGS. 1 and 2, a vertical rotor type wind power generator according to an embodiment of the present invention includes a plurality of blades 100 installed vertically on the ground, a plurality of blades 100 installed rotatably, A center shaft 115 installed to be rotatable and rotatable with respect to the ground and a center shaft 115 installed between the blades 100 and the rotor 110. The rotor 110 is installed vertically to the ground, And power transmission means 120 for transmitting power.

1 and 2, the blade 100 is formed to be rotatable by a wind blowing in all directions.

That is, the blade 100 may have an area that is formed perpendicular to the paper surface so that the blade 100 can be rotated by wind blowing against it. Further, the blade 100 may be formed into an airfoil shape having a point-symmetric cross-section with respect to the center of rotation so that the blade 100 can be rotated by a wind blowing in a lateral direction of the blade 100.

The blade 100 is formed to have a predetermined length perpendicular to the plane of the drawing. The blade 100 is rotated by the wind blowing from itself and the wind blowing from the side, and the rotational force is transmitted to the rotor 110 side through the power transmitting means 120 .

3A is a schematic plan view of a vertical rotor type wind power generator according to an embodiment of the present invention.

Referring to FIG. 3A, the blades 100 are symmetrically formed and disposed at four sides to provide an aerodynamic rotating force and a revolving rotational force.

FIG. 3B is a plan view showing the phase of the blade according to the rotation of the rotor of the vertical rotor type wind power generator according to the embodiment of the present invention.

Referring to FIGS. 1, 3A, and 3B, the rotational force of the blade 100 relative to the wind in the lateral direction and the rotational rotational force of the wind in the front direction may be relatively large. The blade 100 may be formed in the shape of an airfoil whose cross section is point symmetrical with respect to the center of rotation.

The blade 100 is a shape that can easily receive the rotational force due to the wind blowing from the periphery. The length and the cross-section of the shape and the number of the arrangement can be adjusted according to the wind speed and the wind pressure at the installation place.

Referring to FIGS. 1 and 3A, the rotor 110 is installed perpendicularly to the ground, and receives a rotational force by the wind, and corresponds to a rotating shaft that can drive the generator 130 by the rotational force.

The rotor 110 is bearing-coupled to an upper portion of a central shaft 115 which is fixed perpendicular to the ground. The center shaft 115 is a support for supporting the rotor 110 and the blade 100.

The rotor 110 may be provided with a rotating member 116 that can be rotated by the blade 100.

The upper surface of the rotary member 116 is provided with a fixed shaft 118 to which the blade 100 is rotatably coupled. The blade 100 is supported and fixed to the first gear 121, and the first gear 121 is supported on the rotating member 116 and can be coupled to bearings.

The rotary member 116 provides a rotation radius of the rotary member 116 with respect to the rotor 110. The rotary member 116 is formed in a circular plate shape or as a rotary arm and is provided in a rotary panel manner spaced at an angle along the circumferential direction .

That is, although the rotary member 116 may be of a disc shape, it may be constituted by a number of rotary arms (not shown) corresponding to each of the blades 100 and the following gear sets, and in this case, it is possible to reduce the weight.

Referring to FIGS. 1 and 3A, the power transmitting means 120 may be composed of three gears.

The first gear 121 rotatably installed on the rotary member 116 and the first gear 121 rotatably mounted on the fixed shaft 118 are provided on the upper surface of the blade 100, And a third gear 123 fixed to the center shaft 115. The second gear 122 is rotated by the second gear 122,

A vertical axis 119 as many as the number of blades 100 is provided between the center of the rotor 110 and the fixed shaft 118 of each blade 100 in the rotary member 116 of the rotor 110. The second gear 122 rotatably coupled to the vertical shaft 119 can transmit a rotational force between the first gear 121 and the third gear 123.

The first gear 121 corresponds to a planetary gear, the second gear 122 corresponds to an intermediate gear, and the third gear 123 corresponds to a sun gear. The rotation ratio of the first gear 121 and the third gear 123 is preferably about 1: 2.

The rotation of the blade 100 using the first gear 121, the second gear 122 and the third gear 123 can be transmitted by the rotational force of the rotor 110 by using a chain, Other ways of reducing friction losses are also possible. At this time, it is preferable that the rotation ratio of the rotor 110 and the blade 100 is 2: 1, and they can be rotated in opposite directions.

The rotor 110 may be provided with a gear system capable of rotating the generator 130. The gear ratio can be determined at a speed for increasing the rotational speed of the generator 130. [

The generator 130 can produce power and, conversely, can also be operated as a motor driven by power and capable of rotating the rotor 110. Generally, around the generator 130, an inverter for converting voltage and current and a large capacitor or battery for storing electric power, a controller constituted by a power element and a circuit, and the like may be installed in the wiring box.

Figure 4 is a flow diagram of the air providing drag to the blade of Figure 3a.

Figure 5 is a flow diagram of the air generating lift for the blade of Figure 3a.

Referring to FIGS. 3A, 3B and 4, when the blade 100 is revolved by the wind W, when the blade 100 is positioned as shown in FIG. 3A, (Anti-rotation) force is generated by the rotation of the rotor 110, and the rotor 110 can be rotated. In Fig. 4, the arrow indicates the flow direction of the wind. At this time, the blade 100 directly receives the resistance of the wind W and rotates the rotor 110. The blade 100 can provide a counterclockwise rotation moment to the rotating member 116 side by the drag force against the wind.

Referring to Figures 3A, 3B and 5, when the blade 100 is rotated by the wind W, the side surface of the streamlined blade 100, when the blade 100 is positioned as & So that the rotation torque can be obtained. In Fig. 5, the arrow indicates the flow direction of the wind. At this time, the blade 100 is rotated by a lift force. That is, the principle of rotating the blade 100 is that the wind starting from the side of the blade 100 is separated into the first curved surface portion 101 and the second curved surface portion 102, and the flow can be seen. The wind passing through the first curved surface portion 101 becomes faster than the wind passing through the second curved surface portion 102. At this time, lift is generated by the flow velocity difference between the both sides of the generated blade 100, and the blade 100 rotates while moving in the lifting direction. As described above, the blade 100 can rotate the rotor 110 while being rotated by the combined force of the air force by the drag force of the wind W and the magnetic force by the lift force.

Referring to FIGS. 1, 3A and 3B, since the blade 100 moves in the direction of the wind by the rotation of the rotor 110, the relative velocity of the air flowing on the surface of the blade 100, The speed of rotation of the blade 100 can be increased.

The magnetic force of the blade 100 can rotate the rotor 110 through the first gear 121, the second gear 122 and the third gear 123, . The rotational force of the rotor 115 may be finally transmitted to the generator 130 constituting the power generation system and converted into electric power.

Referring to FIG. 1 again, the center shaft 115 is provided with a force generated by the rotation of the blade 100 generated by the wind and applied to the third gear 123, A clockwise or counterclockwise rotational force can be provided by the difference in the force applied to the third gear 123 due to the inertia of the first gear 100.

At this time, if the rotating force of the blade 100 is relatively larger than the rotational force of the rotor 110, a clockwise rotational force is applied to the center shaft 115, and a relatively rotational force is applied to the center shaft 115 have. The rotor 110 is rotated in the direction opposite to the direction of the force applied to the central shaft 115. [

3A and 3B, as the rotor 110 rotates, an angle formed by a reference direction of the central axis 115 and a line connecting the center axis 115 and the center of the blade 100 changes, As the angle changes, the angle formed by the front surface of the blade 100 with the wind direction can be changed by a predetermined amount.

The blade 100 is moved to the rotor 110 by changing the drag force acting on the blade 100 toward the tangent direction of the arc where the rotor 110 rotates depending on the position where the blade 100 is positioned by revolving It is possible to maximize the revolution torque.

This may be set so that the angle at which the front surface of the blade 100 is directed is constant in accordance with the rotating angular position with respect to the reference direction of the central axis 115 at the beginning. Since the rotation ratio of the rotor 110 and the blade 100 is 2: 1 and the blade 100 has a point-symmetrical cross-section with respect to the axis of rotation, even if the rotor 110 rotates and the blade 100 rotates, Can be maintained. Further, even when the reference direction of the central axis 115, that is, the wind direction is changed, the above-mentioned angle with respect to the reference direction of the central axis 115 can always be maintained.

3A and 3B, when the phase of the central axis 115 with respect to the reference direction of the central axis 115 changes while the blade 100 revolves, the deviation angle of the front face of the blade 100 with respect to the wind direction changes , The deviation angle in each phase can be always kept constant. This is because the rotation ratio of the revolution of the blade 100 is 2: 1 and the opposite direction, and the blade 100 has a shape in which the cross section is point-symmetrical with respect to the axis of rotation.

When the deviation angle is maintained, the direction of the drag force generated by the wind is directed toward the tangential direction of the orbit of the blade 100, so that it can be effectively used as the revolving torque of the blade 100. Also, in the phase in which the opposite direction of the drag force is generated, a revolving torque is generated by lifting force, and the revolving torque can be converted to the rotational force of the rotor 110 again.

The blade 100 located in the arrow mark region in FIG. 3A has a large drag force against the wind to increase the revolving rotational force and rotates the rotor 110 through the shaft on which the blade 100 is fixed and the rotating member 116 . The rotational force of the rotor 110 simultaneously provides rotational force to revolve another blade 100 fixed to the rotational member 116. [ On the other hand, the blade 100 located in the " I "arrow area rotates against the wind virtually, and the rotating force against the wind causes the revolving rotational force of the other blade 100 located in the" And is transmitted through the rotating member 116.

In addition, a lift is generated by the wind flowing across the side surface of the blade 100, and this lifting force causes the rotation torque of the blade 100. This rotation torque is converted into the rotational force of the rotor 110 by using gears, . That is, by allowing the blade 100 to rotate around the gear fixed to the fixed center shaft 115, the rotational force of the blade 100 can be converted into the rotational force of the rotational member 116 and the rotor 110.
When the blade 100 is rotated between the "I" and "I" areas, the blade 100 sweeps obliquely against the front surface of the blade 100 to generate a drag in the orbiting direction of the blade 100, A drag force can rotate the rotating member and the rotor 110. [ In addition, a rotating torque is generated by the wind which hits the front surface of the blade 100 obliquely, and this can be likewise switched to the rotational force of the rotor 110.

When the phase of the blade 100 is changed, it is necessary to fix the center shaft 115 to provide a drag corresponding to the rotational force applied to the center shaft 115. That is, an adjusting mechanism for adjusting and fixing the reference direction of the central axis may be required.

6 is a directional view illustrating operation of the vertical rotor type wind power generator according to an embodiment of the present invention.

Referring to FIG. 6, the center shaft 115 installed to operate the rotor 110 is fixed in the wind direction. When the wind direction is changed, the wind direction is automatically detected, and the direction of the center axis 115 It is possible to further provide an adjusting mechanism 140 for changing or changing the direction and fixing and supporting the same. The adjusting mechanism 140 may be driven by a separate motor 143 and operated.

1 and 6, the adjustment mechanism 140 includes a weather vane 141 for sensing a wind direction and a rotary arm 142 connected to the center shaft 115 and capable of rotating the center shaft 115, (144), worm (145), and the like. The worm wheel 144 and the worm 145 may be fixed to the center shaft 115 to prevent the rotation of the center shaft 115 by providing resistance against the rotational force of the blade 100, It is necessary to use the brake function by the gear engagement in which it is impossible to transmit the rotational force in the reverse direction from the worm wheel 144 to the worm 145 side. Of course, in a small simple system, a large rotary arm 142 indicating the wind direction can be used.

The weather vane 141 may be, for example, a wind direction sensor that is an electronic device. The center shaft 115 may be rotated by being supplied with a current stored in a battery or a capacitor to the generator 130 so as to operate the motor without requiring a separate power source. The center shaft 115 may be mounted on the thrust bearing 147 so as to be rotatable on the ground.

FIG. 7 is a schematic perspective view of a vertical rotor type wind power generator according to another embodiment of the present invention, FIG. 8 is a schematic front view of a vertical rotor type wind power generator according to another embodiment of the present invention, Fig. 3 is a schematic plan view of a vertical rotor type wind power generator according to another embodiment of the present invention.

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7 and 8, another embodiment of the present invention is a power transmission device for a blade 100 and a central shaft 115. The power transmission device includes a rotary member 116, And may include a plurality of driven gears 155 and 156 coupled by gears 151 and 152, drive gears 151 and 152 and respective drive chains 153 and 154.

The driving gears 151 and 152 and the driven gears 155 and 156 and the drive chains 153 and 154 are capable of transmitting the rotation force due to lift and drag acting on the blade 100 to the rotor 110, have.

A rotary gear 161 for driving a generator is fixedly coupled to a central portion of the rotor 110 and a corresponding generator gear 162 is coupled to the generator 130. The rotational force of the rotor 110 can be transmitted to the generator 130 because the rotary gear 161 and the generator gear 162 are connected by the power generator chain 163. [

Referring to FIG. 8, the rotary gear 161 is fixedly coupled to the rotor 110 rotated together with the rotary member 116, and may transmit the rotational force to the generator 162 while being rotated together with the rotor 110.

An adjusting gear 171 coupled to the motor 143 rotates and a driven gear 173 rotated by the adjusting chain 172 corresponding to the adjusting gear 171 is fixed to the lower portion of the central shaft 115 Can be combined.

9, only one driven gear 157 is provided and only one drive chain 180 is provided to drive all of the drive gears 151 and 152 and one driven gear 157 to one drive An embodiment of connecting to the chain 180 is shown. At this time, between the driving gears 151, 152 and the driven gear 157, tensioning gears 175, 176 capable of preventing slackening of the driving chain 180 and strengthening the transmission of the driving force are provided on the rotating member 116 As shown in FIG. The tension gears 175 and 176 are wound around a part of the driving chain 180 and may be installed to press a part of the tension chain 175 and 176 toward the opposite side.

The above-described embodiments of the present invention have been described in detail with reference to the accompanying drawings, in which detailed contour lines are omitted. It should be noted that the above-described embodiments are not intended to limit the technical spirit of the present invention, but merely as a reference for understanding the technical idea included in the claims of the present invention.

100: blade
110: Rotor
115: center axis
116: rotating member
118: Fixed shaft
120: Power transmission means
121: First gear
122: second gear
123: Third gear
130: generator
140: Adjusting mechanism
141: weather vane
142: rotary arm
143: Motor
144: Worm wheel
145: Worm
147: Thrust bearing
151, 152, 157: drive gear
153, 154, 180: drive chain
155, 156:
161: rotary gear
162: Power generation gear
163: Power generation chain
171: Adjusting gear
172: Adjustable chain
173: driven gear
175, 176: tension gear

Claims (13)

A central axis perpendicular to the ground;
An adjusting mechanism connected to the center shaft to rotate or fix the center shaft along the wind direction;
A rotor rotatably installed on the central shaft and connected to the generator side;
A plurality of blades installed on the rotor side and rotatable, the blade having a predetermined length and perpendicular to the ground;
And a power transmission unit supported on the rotor and the central shaft, the power transmission unit being supported by the blade and rotating the rotor by receiving rotation of the blade,
Wherein the blade is formed in an airfoil shape symmetrical with respect to its own rotation center,
The blade rotates the rotor via the power transmission means while being rotated by lifting by the wind in the lateral direction,
The blade generates a revolving rotational force by revolving the rotor about the rotational center of the rotor by a drag force by the wind in the front direction,
Wherein when the central axis is fixed by the adjusting mechanism, a reaction force necessary to rotate the rotor by the rotating force of the blade is provided. The method according to claim 1,
The power transmitting means includes a plurality of first gears rotatably supported on the rotor, a plurality of second gears rotatably supported on the rotor and meshed with the first gears, a second gear supported on the center shaft, And a third gear engaged with the second rotor. The method according to claim 1,
The power transmitting means includes a plurality of driving gears rotatably supported on the rotor, a plurality of driven gears supported on the central shaft, and a plurality of driving chains each connecting one of the driving gears and one of the driven gears Wherein the vertical rotor-type wind turbine generator is a vertical rotor type wind turbine generator. 4. The method according to any one of claims 1 to 3,
Wherein the adjusting mechanism includes a worm wheel connected to the center shaft, a worm engaged with the worm wheel, and a motor for rotating the worm to adjust and fix the reference direction of the central axis. . delete delete delete delete delete delete delete delete delete

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