KR101707993B1 - Vertical wind generator - Google Patents

Abstract

The present invention relates to a vertical shaft-wind generator in a vertical shaft type obtained by adding a shape in a savonius type to a shape in a gyromill type. The vertical shaft-wind generator comprises a rotary shaft, a plurality of blades, a frame, a flywheel and a generator. The rotary shaft is vertically installed on the ground. Each blade has a wing-shape with a horizontal section, which is uniformly and lengthily formed in a vertical direction, is installed to be spaced from the outer circumferential surface of the rotary shaft, and is divided into a long blade and a short blade by a virtual vertical surface passing through the rotary shaft. The long blade and the short blade are integrally connected to allow the center of each curvature to be positioned in the opposite direction. The plurality of blades are radially arranged to be symmetrical based on the rotary shaft. The frame connects the rotary shaft with the blades. The flywheel is positioned on an upper part of the rotary shaft to fix the blades. A generator is connected to a lower part of the rotary shaft to generate power through rotation movement of the rotary shaft. Wind generated by propelling one blade is not accumulated while losing energy from a rear surface of the blade, but is circulated while passing through the rotary shaft to propel the rear surface of another blade positioned in the opposite direction, thereby maximizing efficiency in using the kinetic energy of wind. Wind flowing toward a front surface of a long blade flows to a rear surface of a short blade connected to the long blade to collide at the rear surface of the short blade such that the wind is used only for propelling force, thereby maximizing the use of wind.

Description

{Vertical wind generator}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a vertical axis type wind power generator, and more particularly, to a vertical axis wind power generator having a gyroscopic and saberoid type.

At present, except for hydroelectric power generation, most of the world's electricity production

It depends on nuclear power generation. In the case of thermal power generation, there is a problem of depletion of fossil fuels and global warming. In spite of the danger, nuclear power generation has a problem of enormous cost for facility investment and safe disposal of waste, Development of wind power generation as an alternative power energy source is urgent.

Wind turbines are divided into horizontal and vertical wind turbines,

The horizontal axis method is mainstream. The reason is that rather than the technological advantage, it is the result of the research of the horizontal propeller that has grown rapidly through the modernization of the past 20th century and the investment cost and effort of the research in the extension line of the aviation industry. In fact, the horizontal axis method requires yawing control for the frequently changing wind direction compared to the vertical axis method, it receives the bending moment load during the rotation of the large blades due to the wind shear and requires a heavy tower because the transmission mechanism is on the tower. There is a problem that vibration is generated due to a gyroscopic load when the bearing is controlled. Of course, in the case of the vertical axis method, the Darius type has a poor magnetic maneuverability, requires a constant speed mechanism, and has a short history of development and utilization. However, since alternative energy needs to be used in various angles, It is necessary to examine the possibility of creating a superior vertical axis wind turbine generator to replace the conventional horizontal axis. Especially, in Korea, where the wind direction changes frequently, it is more necessary to develop a vertical axis method which is not influenced by the wind direction.

Vertical axis wind turbines include SABONUS method using drag force of wind and gyro mill method and Darius method using wind lift. The Sauvignon type has a large start-up torque but low rotational speed and efficiency of only about 15% at around 0.8 rpm. However, since the gyro mill and the Darius method also require start-up and the torque is low, development of a hybrid type of a saberoid type, a gyro-mill type and a darius type is attempted. In particular, it would be desirable to develop a method that can utilize both lift and drag while making the torque larger, while at the same time minimizing the resistance of the air.

In the vertical axis wind power generation apparatus 10-1241022 (published on Mar. 11, 2013) having a multi-blade array structure in the Korean Registered Patent of FIG. 1, a plurality of blades are required in a coupling portion of one blade in the conventional gyro- So that the vibration can be dispersed and the output can be diversified. The blade can be modularized and structurally stable. However, since the structure of the blade is designed to use only the lift force, not the drag force, the rotational force is low and there is a problem that the initial start is necessary.

In the "vertical axis wind power generation device" 10-0490683 (publication date: May 19, 2005) of FIG. 2, the angle of the blade is controlled according to the change of the wind direction by using a hydraulic device or a motor in the gyro mill method . ≪ / RTI >

It is an advanced technology in that the active wind direction sensing part is installed separately to control the wind direction of the blade. However, since the drag force of wind is still not used in earnest and the active direction control is adopted, It is difficult to overcome the limitation of the conventional gyro mill method in terms of complicatedness.

Therefore, it is not necessary to control the wind direction regardless of the direction of the wind direction, and it is possible to do only with the weak initial wind, and the lift is used with the drag force to have higher efficiency than the vertical axis wind power generator using only the drag force, A technique for a vertical axis wind power generator having a structure that can have a high starting torque with a small number of revolutions and a high starting torque, minimize a rotation disturbing effect due to drag, Is requested.

Patent Registration No. 10-1241022 (Registration date: March 3, 2013)

Patent Registration No. 10-0490683 (Registration date: May 11, 2005)

Accordingly, the present invention has been made to solve the problems of the prior art, and it is not necessary to control the wind direction by starting regardless of the direction of the wind direction, It is possible to have a higher efficiency than that of the vertical axis wind power generator used and to have a high starting torque with a small number of revolutions due to a small peripheral speed ratio and minimize the effect of rotation disturbance due to drag, To provide a vertical-axis wind power generator having a structure capable of switching to a vertical axis wind turbine.

In order to achieve the above object, the vertical axis wind turbine according to the present invention comprises a rotary shaft vertically installed on the ground, a horizontal cross-sectional shape of the airfoil formed to be long in a vertical direction, spaced apart from the rotary shaft outer peripheral surface, And a plurality of blades disposed symmetrically with respect to the rotation axis in a radial direction, and a plurality of blades connected to the rotation axis and the blades, And a generator connected to the lower portion of the rotating shaft to generate electric power by rotating the rotating shaft.

Here, the blade and the blade have curved surfaces on both sides, one of which is a convex surface and the other one is a concave surface, and the first wind pressure surface and the second blade surface The two wind pressure surfaces are connected to each other on the same plane, and the second wind pressure surface and the first wind pressure surface are formed to be connected to each other on the same plane.

In this case, preferably, a plurality of grooves having the same or different sizes are formed on the first wind pressure surface and the first wind pressure surface.

Preferably, two of the blades are provided.

Preferably, a weight disk having a weight and a disc shape is coupled to a rotating shaft through a rotating shaft passing through the center, and is rotated together at a certain point of the rotating shaft.

Preferably, the plurality of arms are symmetrically coupled with each other in a radial direction about a rotation axis at a certain point of the rotation axis, and a plurality of arms connected to the arm end and having a horizontal sectional shape of an airfoil and a longitudinal direction of the airfoil, And an auxiliary propelling section composed of a second blade facing the tangential direction.

On the other hand, an acceleration blade having a curvature in the same direction as that of the first wind pressure surface is provided on the front surface of the first wind pressure surface of each blade, and the acceleration blade has a third wind pressure surface, And a fourth wind pressure surface formed as a concave surface.

Wherein the acceleration blade is spaced apart from the first wind pressure surface.

The vertical axis wind power generator according to the present invention has the following effects.

First, while the blade is separated from the rotating shaft and divided into the blade blade and the blade blade whose curvatures are opposite to each other, the blades are integrally connected to the blade blade and the blade blade, and are separated from each other by a virtual vertical plane passing through the blade axis. The wind is not accumulated at the backside of the blades but accumulates. It is possible to maximize the utilization efficiency of the kinetic energy of the wind by passing through the rotating shaft so as to propel the rear face of the blade in the opposite direction.

Second, by having the above-described configuration, the wind toward the convex front face of the blades can be transmitted to the rear face of the blades while being flowed to the rear face of the blades connected to the blades, so that the use of wind can be maximized.

Third, by having the above-described configuration, the total turning radius can be further reduced as compared with other vertical-axis wind turbines having blades having the same horizontal length, so that the wind energy can be rotated at a higher speed while using the same energy.

Fourthly, by having the above-described configuration, even if the concave surface, which is the back surface of the blade and the blade, does not directly breeze, the wind which is propelled can flow along the space around the rotation axis and act as propulsive force, Thereby eliminating the need for additional power for initial start-up.

Fifth, by forming a plurality of grooves on the convex front surface of the blades and the blades, the air cushion effect and the air lubrication action are generated, and the drag force of the wind against the convex front surface can be minimized.

Sixth, since the weight disk is installed on the rotating shaft, rotation can be stably maintained by inertia force once the initial maneuvering occurs.

Seventh, by providing the auxiliary propulsion unit comprising the second blade of the Darrie type, when the rotation is once started, the blade tip speed can be accelerated to be faster than the inflow wind speed.

Eighth, an acceleration blade having a third wind pressure surface formed to have a curvature larger than that of the first wind pressure surface is provided on the front surface of the first wind pressure surface and a groove identical to the groove of the first wind pressure surface is formed on the third wind pressure surface, The drag force can be remarkably reduced more than when the wind is in the frontal direction of the wind pressure surface.

Ninthly, the wind which is collided with the third wind pressure surface is moved to the second wind pressure surface adjacent to the second wind pressure surface at an abrupt inclination, so that the drag force against the rotation direction can be acted as a rotational thrust.

Figures 1 and 2 are diagrams illustrating the prior art,
3 is a perspective view showing a vertical axis wind power generator according to the present invention,
4 is a plan view of a vertical axis wind power generator according to the present invention,
FIGS. 5A and 5B are plan views showing the drive of the vertical axis wind power generator of FIG.
FIG. 6 is a perspective view showing that an acceleration blade is further installed in FIG. 3,
Figs. 7A and 7B are plan views showing the drive of the vertical axis wind power generator of Fig. 6 in chronological order; Fig.

The specific structure or functional description presented in the embodiment of the present invention is merely illustrative for the purpose of illustrating an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention can be implemented in various forms. And should not be construed as limited to the embodiments described herein, but should be understood to include all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Before describing the present invention, the vertical axis wind turbine generator according to the present invention will be described briefly. The vertical axis wind turbine generator according to the present invention is a vertical axis wind turbine generator in which a horizontal cross- It is a Darius type driven by lift, and it is a vertical axis wind power generator with a Sabonius method because the blade is formed long and is directly driven by the drag of wind. Therefore, it is possible to start without a separate propulsion power due to the use of the drag force due to the Sabnius method, and it is possible to increase the number of revolutions by utilizing the lift force due to the Darius method, So that there is no need for complicated wind direction tracking equipment.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

3, the vertical axis wind power generator includes a rotary shaft 10, a blade 20 rotated together with the rotary shaft 10 to drive the rotary shaft 10, 10), and a generator (not shown) for driving the rotor by the rotation of the rotary shaft 10.

The rotary shaft 10 is installed perpendicularly to the ground and is rotatably installed. As shown in FIG. 3, a frame 50 is installed on the outer circumferential surface of the rotary shaft 10 to fix the blade 20 to the rotary shaft 10 at a distance. In FIG. 3, the frame 50 is formed in a disk shape and is installed at a certain point between both ends of the rotary shaft 10, and the blade 20 is shown fixed to the rotary shaft 10. In this case, the specific shape of the frame 50 is not limited to the disk shape, and if the frame 50 is connected so that the blade 20 and the rotary shaft 10 are rotatable together while being spaced apart from each other, . However, in order to prevent eccentric rotation, the frame 50 is preferably circular or radially symmetric.

The blade 20 is formed as an airfoil having a horizontal wing shape in which the horizontal cross-sectional shape is thick on one side and reduced in thickness toward the opposite side. However, the difference from the ordinary wing shape is that one surface is formed of a convex surface, while the other surface, which is the opposite surface, is formed concave. The center of curvature of both surfaces of the blade 20 is located in the same direction with respect to the blade 20. [ That is, since the blade 20 is formed of a curved surface facing in one direction, the blade 20 can be propelled by using a drag force, thereby eliminating the need for additional power for starting. Further, since the blade 20 is formed as an airfoil, The end speed of the blade 20 can be made faster than the inflow wind speed.

One blade 20 passes through the rotary shaft 10 and can be divided into two parts with a virtual vertical plane including a straight line connecting the rotary shaft 10 and the blade 20 at the shortest distance. At this time, as shown in Fig. 4, the longer side is referred to as a blade blade 21 and the shorter blade blade is referred to as a blade blade 23.

The blades 21 and the blades 23 are integrally formed by forming one blade 20 while the blades 20 are positioned in the opposite directions with respect to the center of curvature of the blades 21 and the blades 23 . Therefore, the reversal of the curvature is formed at the point where the point is shifted from the point (21) to the point (23).

The convex surface of the blades 21 is referred to as the first wind pressure surface 210 and the convex surface of the second blades 23 as the first wind pressure surface 230 and the concave surface of the blades 21 as the second wind pressure surface 220 and the concave surface of the second blade 23 is referred to as a second wind pressure surface 240. As shown in FIG. 4, the first wind pressure surface 210 and the second wind pressure surface 240 form a single blade 20 together with the blade 21 and the blade 23, And the second wind pressure surface 220 is connected to the first wind pressure surface 230 to form one plane.

Between the blade 20 and the rotary shaft 10, a certain point between the center of the blade 21 and the center of the blade 23 is disposed at the shortest distance between the blade and the rotary shaft. That is, when the circle formed by the trajectory of the blade is divided into two semicircles, the one or more semicircular grooves are projected and the other one is projected. Therefore, the wind blowing from the upper part to the lower part of FIG. 4 pushes the upper blade 23 to rotate in the counterclockwise direction and the blades 21 to rotate in the clockwise direction. However, the drag force acting on the blade 21 of the upper blade is not large even though the blade 21 is longer than the blade 23 because the convex surface faces upward so that the direction of the wind is sharply curved.

The gap between the blade 20 and the rotary shaft 10 is formed as shown in FIG. 4, so that the wind can be moved between the blade 20 and the blade 20. Thus, the wind that propels the blade-side second wind pressure surface 220 of one of the blades 20 can be moved to the blade-side second wind pressure surface 220 of the remaining blade 20 to propel the remaining blades 20. This will be described in more detail with reference to FIGS. 5A and 5B.

A plurality of the blades 20 are disposed radially symmetrically with respect to the center of the rotary shaft 10, and preferably two as shown in Fig. Since one blade 20 has the second wind pressure surface 220 and the second small wind blade second wind pressure surface 240, it is possible to propel the two blades 20 to two wind pressure surfaces, And if the blade is installed too much, it may take more force to rotate the rotary shaft 10 due to the weight of the blade. That is, the optimum number and arrangement of the blades 20 in relation to the propulsive force of the blades 20 and the weight of the blades 20 are such that the two blades 20 are arranged radially symmetrically about the rotary shaft 10.

3 and 4, the weight disk 30, which is formed in the form of a disk, is coupled to the rotation shaft 10 and can be integrally rotated together with the rotation shaft 10. The weight disk 30 provides an inertial force to the rotation of the vertical axis wind power generator so that once the rotation starts according to the drag force of the wind, even if the wind is weak in the middle, the rotation of the vertical disk wind turbine 30 can be maintained stably without stopping.

3 and 4, an auxiliary propulsion unit 40 may further be installed. The auxiliary propulsion unit 40 may include a plurality of auxiliary blades 42 having a horizontal sectional shape in an airfoil shape and an arm 41 for connecting the auxiliary blades 42 to the rotation axis 10. At this time, a plurality of auxiliary propulsion units 40 are installed to be symmetrical with respect to the rotation axis 10 in a radial direction. The auxiliary propulsion unit 40 is formed in a structure similar to that of the blade of the gyro-mill type wind power generator.

The vertical axis wind power generator according to the present invention is started once and started to rotate by the auxiliary propulsion unit 40 propelled by lifting force, the blade 20 and the auxiliary blade 42 It is possible to rotate at a higher speed than the incoming wind speed.

The lower end of the rotary shaft 20 is connected to a generator (not shown) so that the rotary motion of the rotary shaft 10 can generate electric power by rotating the rotor constituting the generator.

5A and 5B, the characteristics and effect of the vertical axis wind turbine according to the present invention will be described. Referring to FIGS. 6 and 7A and 7B, the shape and characteristics of the acceleration blade 25, Let's look at the action in turn.

5A and 5B are plan views showing the relationship between the wind and the blade 20 in time order or at various angles when the rotation is started in the vertical axis wind power generator according to the present invention.

In particular, FIG. 5A shows the principle that the vertical axis wind power generator can be started even in a direction in which the main wind force second wind pressure surface 220 and the second wind force surface 240 can not be directly exposed to the wind.

5A and 5B, the blade 21 and the blade 23 constituting one of the two blades 20 are referred to as a first blade 21a and a first blade 23a And the blade 21 and the blade 23 constituting the other blade 20 will be referred to as a second blade 21b and a second blade 23b.

5A, the wind direction directly hits only a part of the first wind pressure surface 210 of the first windshield 21a and the first wind pressure surface 230 of the second windshield 23b, and the first windshield 21a The second wind pressure surface 220 of the first windshield 23a and the second wind pressure surface 240 of the first windshield 23a and the second wind pressure surface 220 of the second windshield 21b and the second wind pressure surface 220 of the second windshield 23b, The wind pressure surface 240 has no direct wind effect. 5A shows an extreme case in which each of the second wind pressure surfaces 220 and 240 of the blade 20, which can be propelled by the drag force of the wind, is blown at an angle that is not in contact with the wind, 5A, it is possible to start the engine when the wind is blown in the worst direction.

5A, the wind is reflected on the first wind pressure surface 230 of the second blade 23b to be reflected on the first wind surface 23a of the second blade 23b, Flows between the first wind pressure surface 230 and the first wind pressure surface 230 of the second stem 23b and is pushed to the second wind pressure surface 220 of the second blade 21b at the position A beyond the rotary shaft 10 The blade 20 is pushed by pushing the second wind pressure surface 220 of the second blade 21b to start the rotation by rotating the entire blade 20.

Also, at this time, the wind colliding with the first wind pressure surface 210 of the first wind-turbine 21a suddenly bends at the portion B due to the large curvature of the first wind pressure surface 210, A drag is formed in the groove 211 due to the groove 211 formed on the first wind pressure surface 210 and an air buffering action occurs over the entire first wind pressure surface 210 . At this time, the air buffering action caused by the groove 211 plays a role similar to that of the lubricant, so that the drag force on the first wind pressure surface 210 is greatly reduced when the blade 20 advances, so that the blade 20 can be easily It acts to make it possible to be propelled. Therefore, the entire blade 20 and the rotary shaft 10 start rotating counterclockwise in Fig. 5A.

5B is a plan view showing a state after the blade 20 and the rotary shaft 10 in FIG. 5A are rotated about 70 to 80 degrees counterclockwise.

5B, the blade 20 is composed of the blade 21 and the blade 23 whose curvatures are reversed in the present invention and the two blades 20 are spaced apart from each other with the rotary shaft 10 interposed therebetween, The principle of double additional propulsion is shown compared to the Bonnius type.

The first additional propulsive force is the propulsive force due to the wind received by the second wind pressure surface 240 of the second blade 23b shown in FIG. That is, in the present invention, the blades 20 are disposed such that the blades 21 and the blades 23 protrude in different semicircles from each other, so that the blade 20 can be propelled by winds in both directions. In this case, when the wind is blown in the direction opposite to the direction of FIG. 5A, the blade 20 is propelled by the second wind pressure surface 220 of the second blade 21b so that both winds directly push one of the blades It can be a wind.

The second additional propulsive force is generated when the wind that collides with the E region in FIG. 5B pushes the second wind pressure surface 220 of the first windshield 21a, passes through the D region with the remaining energy, Is the propulsive force generated by propelling the wind pressure surface 220. That is, in the present invention, the two blades are installed apart from each other with the rotary shaft 10 therebetween so that the wind can advance into the opposite semicircle through the rotary shaft 10, The second wind pressure surface 220 of the other blade can be propelled. Here, the space between the two blades acts as a passage through which the wind blowing from either side can flow to drive both blades.

The present invention has the structure as described above, so that it has a structure capable of receiving double additional propulsive force as compared with a normal Savonius vertical axis wind turbine.

On the other hand, as shown in FIG. 5B, the wind which is hitting the first wind pressure surface 210 of the second blade 21b is caused by the plurality of vortexes formed in the groove 211 formed in the first wind pressure surface 210, The air lubrication layer is formed on the first wind pressure surface 210 to minimize the drag caused by the wind and the air flowing on the first wind pressure surface 210 due to the large curvature formed on the first wind pressure surface 210 As the flow accelerates, the pressure drops and the drag decreases.

Therefore, in the vertical axis wind turbine according to the present invention, the blade 20 is rotatable with a greater thrust due to the double thrust and the drag reduction caused by the surface grooves 211, 231.

In addition, the entire length of the blades 20 is not arranged in any one semicircle, but is arranged in a form extending over both semicircles, so that the turning radius of the entire blades 20 is reduced and the rotational speed is increased.

When the size of the turning radius forming the trajectory of the space occupied by the blade 20 is defined as R, the rotational angular velocity of the blade as?, And the inflow wind speed as V, the main component ratio is defined as?

(ω=2πn, 각속도)

(? = 2? n, angular velocity)

As can be seen from the above equation, if the radius is smaller, the angular velocity increases and the rotation speed becomes faster even if the ratio is λ. In this case, the turning radius is reduced according to the arrangement of the blades 20, and the propulsive force that the blade 20 receives from the wind is not reduced because the both of the blades 23 and the blades 21 are received. Therefore, The efficiency of the vertical axis wind power generator itself is greatly increased. This effect is possible because the blade 20 is divided into the major blade 21 and the minor blade 23 and the major blade 21 and the minor blade 23 are arranged in different semicircles with a virtual vertical plane passing through the rotary shaft 10.

6, on the front surface of the first wind pressure surface 210, the acceleration blade 25 having the same curvature and direction as the first wind pressure surface 210 and having a larger curvature is installed . The acceleration blade 25 is preferably installed so as to be spaced apart from the first wind pressure surface 210. Both surfaces of the acceleration blade 25 are formed of convex surfaces on one side and concave surfaces on the other side like the blade 21 of the blade 20. Here, the convex surface will be referred to as a third wind pressure surface 250 and the concave surface will be referred to as a fourth wind pressure surface 260.

A plurality of grooves 251 may be formed on the third wind pressure surface 250 in the same manner as the first wind pressure surfaces 210 and 230. 6, the acceleration blade 25 may be fixed to the frame 50 formed at the central portion of the rotary shaft 10 like the blade 20, or may be fixed to the frame 50 as shown in FIGS. 7A and 7B, The first wind pressure surface 210 and the third wind pressure surface 250 may be connected to the blade 20 by a fixed arm 51 for fixedly connecting the first wind pressure surface 210 and the third wind pressure surface 250.

The provision of the acceleration blades 25 provides two additional effects. The principle in which an additional effect due to the acceleration blade 25 is generated is shown in Figs. 7A and 7B. The acceleration blade connected to the first wind pressure surface 210 of the first hoist 21a is referred to as a first acceleration blade 25a and the acceleration blade connected to the first wind pressure surface 210 of the second blade 21b, Will be referred to as a second acceleration blade 25b.

FIG. 7A is a plan view showing a state in which the acceleration blade 25 is installed in a state similar to FIG. 5A. FIG. For reference, the wind direction shown in Figs. 7A and 5A is the wind in the most unfavorable direction in the vertical axis wind power generator according to the present invention. This is because there is no direct collision with the second wind pressure surfaces 220, 240 or all the fourth wind pressure surfaces 260 of all the blades.

In this case, the wind that impinges on the third wind pressure surface 250 of the second acceleration blade 25b generates a drag in a direction opposite to the rotation direction of the vertical axis wind power generator, but the third wind pressure surface 250 of the first acceleration blade 25a ) Generate a forward drag, so that they can cancel each other.

The greatest effect of the acceleration blade 25 shown in FIG. 7A is that the third wind pressure surface 250 is in contact with the third wind pressure surface 250, Since the curvature is formed larger than the wind pressure surface 210, the speed of the wind is higher and the pressure is lower, which further reduces the drag acting in the reverse direction as compared with the case where the acceleration blade 25 is not installed. In addition, since the groove 251 is formed on the third wind pressure surface 250, the air lubrication action by the groove 251 is still effected, and the drag is further lowered.

7B is a plan view showing the relationship between the wind and the blade 20 when all the blades 20 are rotated counterclockwise by about 90 degrees in the same direction of the wind in FIG.

The greatest effect of the acceleration blade 25 shown in FIG. 7B is that the wind that is impinged on the third wind pressure surface 250 has a large curvature of the third wind pressure surface 250, It can be collided at a large enough angle to be able to be provided. That is, when the wind is collided with the third wind pressure surface 250 in a direction opposite to the rotation direction, the reverse direction force generated from the third wind pressure surface 250 is reduced to a level much lower than the drag force generated from the first wind pressure surface 210 On the other hand, the third wind pressure surface 250 itself acts as a guide for guiding the wind to the second wind pressure surface 240 so that the wind that is hitting the third wind pressure surface 250 pushes the second wind pressure surface 240 .

Therefore, the reverse drag force is further reduced by installing the acceleration blade 25, and the rotation of the vertical axis wind power generator can be further accelerated with the rotational force of the second wind pressure surface 240 being increased.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.

10: rotating shaft 20: blade
21: Jangwik 21a: 1st
21b: The second piece 23: The second piece
23a: first branch 23b: second branch
25: Accelerator blade 25a: First accelerator blade
25b: second acceleration blade 30: weight disk
40: auxiliary propulsion unit 41: arm
42: auxiliary blade 50: frame
51: Fixing arm 210: First wind pressure surface
211: groove 220: second wind pressure surface
230: a first wind pressure surface 231: a groove
240: the second wind pressure surface 250: the third wind pressure surface
251: groove 260: fourth wind pressure surface

Claims (8)

A rotary shaft installed vertically to the ground;
Wherein the airfoil is divided into a blade blade and a blade blade, the blade blade having a horizontal cross-sectional shape formed to be constantly long in the vertical direction and spaced apart from the outer peripheral surface of the rotation axis and including a straight line between the rotation axis and the airfoil, A blade disposed radially symmetrically about a rotational axis;
A frame connecting the rotating shaft and the blade; And
And a generator connected to a lower portion of the rotating shaft to generate electric power by rotating the rotating shaft,
And the center of curvature is located in an opposite direction to each other. The method according to claim 1,
Wherein the blade has a first wind pressure surface and a second wind pressure surface, the first wind pressure surface being a convex surface and the second wind pressure surface being a concave surface, Wherein the wind pressure surfaces are connected to each other on the same plane and the second wind pressure surface and the first wind pressure surface are connected to each other on the same plane. 3. The method of claim 2,
And a plurality of grooves having the same or different sizes are formed on the first wind pressure surface and the first wind pressure surface of the first blade. The method according to claim 1,
Wherein the blade has two blades. The method according to claim 1,
Wherein a weight disk having a weight and a disk shape is coupled to a rotating shaft and rotates together with the rotating shaft passing through the center at a certain point of the rotating shaft. The method according to claim 1,
A plurality of arms symmetrically coupled to a certain point of the rotary shaft in a radial direction about the rotary shaft, and a plurality of arms coupled to the ends of the arms and having a horizontal sectional shape of an airfoil and a longitudinal direction of the airfoil, Further comprising: an auxiliary propellant comprising an auxiliary blade. 3. The method of claim 2,
Wherein each of the blades is provided with an acceleration blade having a curvature formed in the same direction as the first wind-pressure surface on the front side of the wind-resistant first wind-pressure surface, the acceleration blade having a third wind- And a fourth wind pressure surface formed by the first wind pressure surface. 8. The method of claim 7,
Wherein the acceleration blade is installed to be spaced apart from the first wind pressure surface.

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