JP2005061392A - Wind and water turbine with variable blade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide very high power generation efficiency, by automatically turning blades by 90° and changing the form to have little reception of wind and by tilting the blade at an intermediate position by 45° to promote the rotations of a wind turbine by component force of wind power, different from a conventional negative method in which opposite blades do not receive the wind as little as possible. <P>SOLUTION: In a wind and water turbine, blade shafts 5 to which rectangular plate-shaped blades 4 are fixed are attached to several portions of the periphery of a wind and water turbine body 2 attached to a wind and water rotational shaft 3, so that the blade shafts 5 are in parallel with the wind and water rotational shaft 3. All of the blade shafts 5 are rotatable, and by adjusting meshing of blade gears 6 and setting the mounting angles so that the blades direct to the center of the wind and water rotational shaft 3, the wind and water turbine is provided with variable blades which interlocks with rotations of the wind and water turbine and changes inclination angles of all of the blades 4 attached to the wind and water turbine body 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

Detailed Description of the Invention

[Industrial application fields]

The present invention can be used for a small-scale wind power generation field as well as a fluid other than wind, that is, a water current power generation field.
[Conventional technology]

A conventional windmill with rectangular blades attached to a vertical rotating shaft rotates by receiving wind from one side of the shaft, but the opposite blade is made to have a convex shape to avoid receiving wind as much as possible. Therefore, it is rotated by the wind force of the difference, and the efficiency of power generation is low.
[Problems to be Solved by the Invention]

Unlike the conventional passive method of avoiding the wind as much as possible with the blade on the opposite side, the present invention automatically rotates the blade by 90 ° to change the direction in the circumferential direction of the wind turbine body, and almost wind It is possible to obtain a high power generation efficiency by changing the shape to not received and by tilting the blade at the intermediate position by about 45 ° to assist the rotation of the windmill by the component force of the wind force.
[Means for solving the problems]

In a wind turbine having a structure in which blade shafts 5 having rectangular plate-like blades 4 fixed in parallel with the wind turbine rotation shaft 3 are attached to several locations around the wind turbine main body 2 attached to the wind turbine rotation shaft 3. The blade shaft 5 is configured to be rotatable, a blade gear 6 having 2 × N teeth is attached to the blade shaft 5, and the blade gear 6 is fixed to the wind turbine chassis 1. The intermediate gear 8 that rotates on the gear shaft 7 is meshed with the intermediate gear 8, and the intermediate gear 8 is meshed with a stop gear 9 having a number N of teeth fixed to the wind turbine chassis 1. After setting the direction of the blades 4 to face the center of the wind turbine rotation shaft 3 so as to face the wind or water in the direction of the arrow, after the wind turbine is rotated 90 °, the intermediate gear 8 The shaft center revolves 90 ° clockwise with respect to the shaft center of the stop gear 9, and the intermediate gear 8 having N teeth rotates in the clockwise direction 180 °. At this time, the blade gear 6 is fixed while being engaged with the intermediate gear 8. Next, when the axis of the blade gear 6 is returned to 90 ° counterclockwise, the blade gear 6 rotates 135 ° counterclockwise. Therefore, the 180 ° -135 ° = 45 ° blade gear 6 tilts clockwise and comes to the position shown in FIG. Further, when the wind turbine body 2 rotates 90 ° clockwise and reaches the point C in FIG. 3, the blades 4 are further rotated 45 ° clockwise by the action of the combined three gears 6, 8, and 9. It faces in the circumferential direction of the wind turbine body 2 as shown in the inclination [FIG. 3]. Further, when the wind turbine body 2 is rotated 90 ° clockwise and reaches the point D in FIG. 4, the blade 4 is further tilted 45 ° clockwise by the action of the gear as described above. Come on. Further, when the wind turbine body 2 rotates 90 ° clockwise and reaches the point E in FIG. 5, the blade 4 further tilts by 45 ° as shown in FIG. 5. Turn to the center. The intermediate gear 8 and the blade gear 6 are attached to all the blades 4 attached to the wind turbine body 2 in this way, and every time the blade 4 comes to the point A in FIG. In addition, by adjusting the meshing of the blade gear 6 so that the mounting angle is directed to the center of the wind turbine rotating shaft 3, all the blades 4 mounted on the wind turbine main body 2 have the required inclination angles in the same manner as the first blade. Can be changed.
[Action]

When the wind turbine rotates and the blade 4 turns to the position A in FIG. 1 and the direction of the blade 4 is toward the center of the wind turbine rotating shaft 3 as shown in FIG. Can receive all wind and water. When the blade 4 reaches point B in FIG. 2, the blade 4 is inclined by 45 °, but can receive about half the force of wind or water in the direction of the arrow. Further, when the point C in FIG. 3 is reached, the direction of the blade 4 is directed to the direction of wind or water, so there is almost no resistance due to the wind or water in the direction of the arrow, and the point D in FIG. 4 is reached. When the blade 4 is inclined 45 °, it can receive about half the force of wind or water in the direction of the arrow. As described above, all of the many slats provided in the wind turbine main body 2 receive the maximum wind force or hydraulic power when they reach the point A in FIG. When the point B in FIG. 2 or the point D in FIG. 4 is reached, about half of the wind power or hydraulic power can be received, and very high power generation efficiency can be obtained.
〔Example〕

[FIG. 7] and [FIG. 8] show an embodiment of the present invention. The wind turbine body 2 shown in the figure is provided with four blades 4, which are keyed to a blade shaft 5, and attached with a blade gear 6 having 2 × N teeth at the lower end. . The wind turbine body 2 is rotatably supported. An intermediate gear shaft 7 is firmly fixed to the wind turbine body 2, and an intermediate gear 8 is supported so as to be freely rotatable. A stop gear 9 having N teeth is attached to the wind turbine chassis 1 by bolts 13. It is fixed and completely integrated with the Feng Shui chassis 1. These three gears are meshed so as to be in a straight line when viewed from the plan view (FIG. 8) of the wind turbine body 2. When the wind turbine body 2 rotates 90 °, the shaft center of the intermediate gear 8 revolves 90 ° clockwise with respect to the shaft center of the stop gear 9, and when the number of teeth of the intermediate gear 8 is N, it rotates 180 ° clockwise. Rotate to At this time, the blade gear 6 is fixed while being engaged with the intermediate gear 8. Next, when the axis of the blade gear 6 is returned to the opposite direction, the number of teeth of the blade gear 6 is twice the number of teeth of the stop gear 9, that is, 2 × N, so that the blade gear 6 is counterclockwise. It rotates 135 °. Accordingly, the 180 ° -135 ° = 45 ° blade gear 6 is inclined clockwise (FIG. 1) to the position (FIG. 2). Similarly, [FIG. 2] to [FIG. 3], [FIG. 3] to [FIG. 4], [FIG. 4] to [FIG. 5] and the blade 4 are rotated clockwise by 45 ° in each case. At this time, it can be seen that the blades 4 are just turned over when compared with FIG. 1 and FIG. As described above, wind power and hydraulic power are effectively received by the blades 4 to rotate the wind turbine main body 2, and the generator 14 directly connected to the wind turbine rotating shaft 3 can be efficiently rotated.
〔The invention's effect〕

The present invention automatically absorbs the energy of low-speed wind or water by automatically changing the inclination angle of the blades 4 to the state where it receives almost no wind or hydraulic power on the opposite side from the state where it receives wind or hydraulic power on the entire surface. It has the characteristics that it can generate electricity. Therefore, it is possible to generate electricity from river water and tidal current.

, , , as well as ・ ・ ・ ・ ・ Explanatory diagram showing stepwise change of the principle of the present invention ... Explanation of [Claim 2] of the present invention ..... Longitudinal sectional view of an embodiment of the present invention ... Plan view same as above

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Feng Shui wheel mount frame 2 ... Feng shui turbine body 3 ... Feng shui wheel rotation axis 4 ... Blade 5 ... Blade shaft 6 ... · Blade gear 7 · · · Intermediate gear shaft 8 · · · Intermediate gear 9 · · · Stop gear 10 · · · Blade chain wheel 11 · · · Stop chain wheel 12 ... Chain 13 ... Mounting bolt 14 ... Generator

Claims (2)

In a wind turbine having a structure in which blade shafts 5 each having a rectangular plate-like blade 4 fixed in parallel with the rotation shaft 3 are attached to several locations around the wind turbine body 2 attached to the wind turbine rotation shaft 3. An intermediate gear shaft in which all blade shafts 5 can be rotated, a blade gear 6 having 2 × N teeth is attached to the blade shaft 5, and the blade gear 6 is fixed to the wind turbine body 2. The intermediate gear 8 is meshed with an intermediate gear 8 that rotates on the top 7, and the intermediate gear 8 is meshed with a stop gear 9 having N teeth fixed to the wind turbine chassis 1. The wind turbine rotates so that one of the blades moves to the position A in FIG. 1 so that the blade 4 faces the center of the wind turbine rotating shaft 3 as shown in FIG. After the blades 4 face the wind or water in the direction of the arrow, the wind turbine body 2 is rotated 90 ° clockwise by the wind or water and reaches point B in FIG. At this time, while the intermediate gear 8 and the blade gear 6 are meshed with each other, the blade gear 6 is rotated by turning around the stop gear 9 by 90 °, and the blade 4 fixed thereto is as shown in FIG. Tilt 45 ° clockwise. Therefore, the rotation of the wind turbine is promoted by the wind or water component in the direction of the arrow. Further, when the wind turbine body 2 rotates 90 ° clockwise and reaches the point C in FIG. 3, the blade fixed to the blade gear 6 by the operation of the meshed gears 6, 8, 9 4 is further inclined by 45 ° in the clockwise direction and is directed in the circumferential direction of the wind turbine body 2 as shown in FIG. 3 so that it hardly receives wind or water resistance. Further, when the wind turbine body 2 is rotated 90 ° clockwise and reaches the point D in FIG. 4, the blade 4 is further inclined 45 ° clockwise as shown in FIG. . Accordingly, rotation of the wind turbine is facilitated by the wind or water component in the direction of the arrow.
Further, when the wind turbine body 2 is rotated 90 ° clockwise and reaches the point E in FIG. 5, the blade 4 is further inclined 45 ° clockwise, as shown in FIG. 5, the direction of the blade 4 is feng shui. It turns to the center of the vehicle rotating shaft 3, i.e., the blades face the wind or water in the direction of the arrow. In this way, the intermediate gear 8 and the blade gear 6 are attached to all the blades 4 attached to the peripheral part of the wind turbine body 2, and the wind turbine body 2 is rotated so that all the blades 4 are point A in FIG. The inclination angle of all blades 4 attached to the wind turbine main body 2 is adjusted by adjusting the meshing of the blade gear 6 so that the mounting angle is directed to the center of the wind turbine rotating shaft 3. A structure of a wind turbine having variable blades that can be changed from [FIG. 1] to [FIG. 2], [FIG. 3], [FIG. 4], and [FIG. Instead of the blade gear 6, intermediate gear 8 and stop gear 9 of [Claim 1], as shown in FIG. 6, a blade chain wheel 10 having 2 × N teeth is attached to the blade shaft 5, and Further, by attaching a stop chain wheel 11 having the number of teeth N fixed to the wind turbine chassis 1 and having a structure in which the chain 12 is multiplied between them, it is possible to perform the same action as [Claim 1]. Structure of a wind turbine with blades

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