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Publication numberWO2003076802 A1
Publication typeApplication
Application numberPCT/JP2002/004211
Publication date18 Sep 2003
Filing date26 Apr 2002
Priority date13 Mar 2002
Publication numberPCT/2002/4211, PCT/JP/2/004211, PCT/JP/2/04211, PCT/JP/2002/004211, PCT/JP/2002/04211, PCT/JP2/004211, PCT/JP2/04211, PCT/JP2002/004211, PCT/JP2002/04211, PCT/JP2002004211, PCT/JP200204211, PCT/JP2004211, PCT/JP204211, WO 03076802 A1, WO 03076802A1, WO 2003/076802 A1, WO 2003076802 A1, WO 2003076802A1, WO-A1-03076802, WO-A1-2003076802, WO03076802 A1, WO03076802A1, WO2003/076802A1, WO2003076802 A1, WO2003076802A1
InventorsKenzo Kanki, Hareyuki Nishida
ApplicantKenzo Kanki, Hareyuki Nishida
Export CitationBiBTeX, EndNote, RefMan
External Links: Patentscope, Espacenet
Blade and auxiliary member of wind power generator, and wind power generator
WO 2003076802 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.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
JP3071880U * Title not available
JP50001242A * Title not available
JP57075177U * Title not available
JP59136581A * Title not available
US5616963 *7 Jun 19951 Apr 1997Kikuchi; NaomiWind power generator with automatic regulation of blade pitch in response to wind speed by means of spring mounted blades
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
WO2007105174A113 Mar 200720 Sep 2007Tecsis Tecnologia E Sistemas Avanšados LtdaMulti-element blade with aerodynamic profiles
EP2572102B1 *18 Oct 201014 Dec 2016Siemens AktiengesellschaftRotor blade element and method for improving the efficiency of a wind turbine rotor blade
US864706313 Mar 200711 Feb 2014Tecsis Tecnologia Sistemas Avanšados S.A.Multi-element blade with aerodynamic profiles
US936622218 Oct 201014 Jun 2016Siemens AktiengesellschaftRotor blade element and method for improving the efficiency of a wind turbine rotor blade
Classifications
International ClassificationF03D1/06, F03D11/00
Cooperative ClassificationY02E10/721, F03D1/0641, F05B2240/31, F03D1/0675
European ClassificationF03D1/06C6, F03D1/06B6B
Legal Events
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18 Sep 2003AKDesignated states
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27 Apr 2005122Ep: pct application non-entry in european phase