Title:
BLADE AND AUXILIARY MEMBER OF WIND POWER GENERATOR, AND WIND POWER GENERATOR
Document Type and Number:
WIPO Patent Application WO/2003/076802
Kind Code:
A1
Abstract:
A blade used for the windmill of a wind power generator capable of increasing a power generating efficiency at a rather low wind velocity and preventing excessive rotation of the windmill while assuring the power generating efficiency at a rather high wind velocity, comprising a blade body (22) having a camber and rotatably fitted to the rotating shaft of the windmill and an auxiliary member (23) installed at the rear end of the blade body in the rotating direction of the blade body so as to be extended therefrom, wherein the auxiliary member is formed in a first shape capable of increasing the camber of the blade and the projected area of the blade on the rotating surface of the windmill and, when a wind force is increased, deforms from the first shape to a second shape capable of reducing the camber of the entire blade to the same level as the camber of the blade body and, when the wind force is decreased, returns to the first shape.
Inventors:
KANKI KENZO (JP)
NISHIDA HAREYUKI (JP)
NISHIDA HAREYUKI (JP)
Application Number:
PCT/JP2002/004211
Publication Date:
September 18, 2003
Filing Date:
April 26, 2002
Export Citation:
Assignee:
KANKI KENZO (JP)
NISHIDA HAREYUKI (JP)
NISHIDA HAREYUKI (JP)
International Classes:
F03D11/00; F03D1/06; (IPC1-7): F03D1/06; F03D7/04
Foreign References:
| JPS5775177U | 1982-05-10 | |||
| US5616963A | 1997-04-01 | |||
| JP3071880U | 2000-09-22 | |||
| JPS59136581A | 1984-08-06 | |||
| JPS501242A | 1975-01-08 |
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