Savonius Rotor Blade with Air-foil type Muliti-Damper

专利摘要:
The present invention relates to a shape of a rotary blade with a damper (Damper) is opened and closed by the wind to increase the rotational force of the Savonius windmill that is used as a rotating device of a vertical axis wind power generator, the rotation axis is perpendicular to the ground. In this way, the difference in the force (force) that tries to push the object in the direction of the wind flow is maximized to obtain a high torque. The rotary blades of the Savonius windmill are cut in the longitudinal direction of the drum or pipe to be combined so that the shapes are opposite to each other about the rotation axis 15 to increase the drag force of both rotary blades to obtain the rotational force. As shown in FIG. 2, the rotor blade damper 16 is attached to the position where the air resistance is maximum when rotating, and the rotor blade 11 receives a lot of drag, and the damper is closed by wind and its own weight, and the rotor receives less drag. (12) The damper is opened by the rolling resistance and the wind to increase the drag difference between the two blades, and the air flows smoothly during rotation, eliminating the vortices and instantaneous vacuum phenomenon on the opposite side of the rotation. The torque is maximized, and the wind rotor blades (13) and (14) perpendicular to each other in the lower part in the axial direction are alternately subjected to maximum drag at 90 ° intervals. Therefore, the rotational movement is made smoothly, and it is possible to continuously increase the rotating torque by continuously connecting the rotary blades of several layers along the axis of rotation, so that it can be used as a high efficiency rotary device of the vertical axis wind power generator. Savonius windmill rotor blades with damper ".
公开号:KR20020005550A
申请号:KR1020010075943
申请日:2001-12-03
公开日:2002-01-17
发明作者:손길홍
申请人:손길홍；
IPC主号:

专利说明:

Savonius Rotor Blade with Air-foil type Muliti-Damper with Multi-stage Damper
[12] The present invention relates to a shape of a Savonius windmill rotary blade designed to be widely used in a wind power generator by maximizing the rotation torque by attaching a damper to the rotor blade of a Savonius windmill, which is a vertical wind turbine using wind drag.
[13] Conventional wind power generators have a horizontal axis windmill and a vertical axis windmill type, each of which has advantages and disadvantages. The horizontal propeller windmill uses aerodynamic lift force to generate high power generation efficiency, but it is necessary to change the direction of the rotor blades according to the direction of the wind. There is a need for a device that needs to be changed, and the large capacity is limited in size because of the risk of damage to the device due to strong winds. In addition, the typical Darius windmill is aerodynamically using the lift force of the wind (Lift Force), the output of the generator is weak and does not start by itself at the beginning, the auxiliary power unit is required, and the efficiency is lower than the horizontal type, so the practical use is actively made. I'm not losing. In addition, the vertical Savonius windmill is aerodynamically driven by drag force, so the rotational speed cannot be higher than the wind speed. There is a limit to increase the speed of the transmission, so it is only partially applied to small wind turbines.
[14] Since the rotation speed cannot be higher than the wind speed, in order to commercialize the Savonius windmill, which has not been actively used as a generator, as a real generator, it is possible to increase the rotation ratio by increasing the rotation torque around the rotation axis as much as possible. Should be. For this purpose, a damper is attached to the rotor blades of the Savonius windmill so that the damper on one of the blades is closed by wind and self-weight and the damper on the opposite wing is opened by wind and rolling resistance. In order to increase the number of revolutions, and to configure the size and shape of the damper to the optimum conditions, it is to present the rotary wing shape of the Savonius windmill that can be practically used in the vertical axis wind power generator.
[1] 1 is a perspective view showing an embodiment of the invention
[2] 2 is a perspective view of a rotary blade
[3] 3 is a plan view and a side view of an airplane wing shape damper;
[4] 4 is a plan view and a partial cross-sectional view of the rotary blade.
[5] <Description of Signs of Major Parts>
[6] 11,12,13,14: Rotating Wings
[7] 15: axis of rotation
[8] 16: airplane wing shape damper
[9] 21: wind blowing direction
[10] 22: rotation direction (clockwise)
[11] 31: pivot pivot of damper
[15] 1 is attached to the rotary wing 11 and the rotary wing 12 of the Savonius windmill in the shape of a plane-shaped damper attached to the rotary shaft 15 perpendicular to the ground, the lower portion in the axial direction Rotating blades (13) and (14) orthogonal to the rotary blades (11) and (12) are coupled to the rotating shaft (15) in the same way, and can be attached to multiple layers of rotating blades in the same way. .
[16] In FIG. 2, when the wind acts on the rotary blade in a predetermined direction 21, the drag D₁ received by the rotary blade 11 is much larger than the drag D₂ received by the rotary blade 12, and thus, due to the difference in drag. Rotation torque is generated so that the rotary blade rotates in the clockwise direction (22).
[17] When the wind-receiving surface of the rotary blade 11 is perpendicular to the wind direction 21, the drag becomes the maximum, and the rotary blade rotates so that it is parallel to the wind direction and when the drag becomes the minimum, they are orthogonal to each other and rotate at the bottom of one end. The drag received by the wing 13 is maximized, so that the rotational force continues to occur, thereby making a smooth rotational movement.
[18] Attach the airplane wing shape damper 16 as shown in FIG. 3 to open only in one direction at the position where the air resistance of the rotary wing is maximum, and the wind flowed from one rotary wing 11 as shown in FIG. Since the wind cannot pass through and the entire projection area of the rotor blade is dragged, while the damper is opened at the opposite rotor blade 12, the wind passes easily and the drag decreases as much as the drag received by the projected area of the damper. In other words, the drag difference of both rotor blades is increased so that the torque is increased proportionally.
[19] And when the rotor blade rotates, the damper is opened to allow air to pass through, so the air flows smoothly, eliminating the vortex (vortex) phenomenon on the opposite side of the rotation direction, thus preventing the rotational force from dropping. Instantaneous vacuum phenomenon (vacuum effect) occurs on the rear side, causing drag to lower the rotational force.The damper opens and air flows to solve the vacuum effect, thereby preventing the rotational force from dropping and improving the rotational efficiency. It was configured to be used as a device.
[20] As the damper increases its opening angle, the damper is resisted by its own weight.
[21] As shown in FIG. 3, the damper receives a lift force to increase the opening angle, thereby reducing drag in the direction of rotation of the rotor blade and minimizing the opening resistance due to the weight of the damper. In order to make the appropriate size and attached in stages.
[22] In addition, the wing-shaped damper is closed by its own weight and fastened by turning the pivot center axis 31 of the damper at a point where the total length of the damper is divided into 3: 7 so that it can be opened lightly when the wind is applied during rotation. .
[23] The present invention is a vertical axis wind turbine because it is a device that must change the direction of the rotary blades according to the wind direction and the strength of the wind, unlike the existing horizontal shaft propeller wind turbines of the horizontal propeller method No wind turbine blades are available, the shape of the wind turbine is simple, easy to manufacture, and the maximum torque can be increased, thus lowering the overall installation cost and ultimately lowering the cost of power generation. . If the economic feasibility of wind power generators increases, it will be possible to expand the supply of alternative energy, such as the power supply source of islands and the development of coastal districts.
[24] In addition, since the present invention is additionally installed on the shaft portion of the existing Darius-type generator (simply attached to the existing shaft), the Darius-type generator, which is partially inoperable due to the increase in power generation efficiency, may be operated again.

权利要求:
Claims (3)
[1" claim-type="Currently amended] When wind power is received, the damper of one wing is closed around the axis of rotation to increase the drag coefficient, and the damper of the other wing is opened to reduce the drag coefficient (Fig. 2).
Savonius windmill rotor with multi-stage damper
[2" claim-type="Currently amended] The drag difference of the two blades on the opposite side with respect to the rotation axis is increased, and the vortex phenomenon on the opposite side of the rotation direction during rotation and the instantaneous vacuum phenomenon during acceleration are minimized to minimize drag and increase the opening angle by lifting force. Damper of the plane wing shape as shown in Figure 3
[3" claim-type="Currently amended] 3. The damper centering shaft 31 of the damper is divided into 3: 7 as shown in FIG. 3 so that the airplane wing-shaped damper is closed by its own weight when there is no wind and lightly opens when the wind is applied. Tightening method to be located at the point

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同族专利:

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
2001-12-03|Application filed by 손길홍

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2001-12-03|Priority to KR1020010075943A

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2002-01-17|Publication of KR20020005550A

优先权:

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申请号 | 申请日 | 专利标题

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KR1020010075943A|KR20020005550A|2001-12-03|2001-12-03|Savonius Rotor Blade with Air-foil type Muliti-Damper|