BLADE AND STRUT OF WIND TURBINE FOR VERTICAL-AXIS WIND POWER GENERATOR

WIPO Patent Application WO/2015/152073

A1

Although the external dimensions of a blade which is the most important part of a wind turbine for a vertical-axis wind power generator will differ depending on the output to be generated by the wind power generator, the present invention focuses on the normally unnoticed reverse side of the blade, that is, the back side of the blade, and forms the blade into a shape capable of capturing a breeze however weak. Upright blades are disposed on the outer ends of multiple horizontal arms (struts) radially attached to a vertical center shaft. Each blade has a horizontal cross section having a U-shaped contour, wherein the outer surface of the rear half portion of the streamlined shape, as opposed to the front half portion, is formed into a convex arc shape while the center shaft-side surface is left open in the U-shape, so that the blade is pushed as the reverse side effectively catches wind. Furthermore, although the blade will gradually begin to receive wind force from a lateral direction as the wind turbine rotates when pushed from behind by wind force, the other blades will be pushed in a forward direction by the wind force striking the U-shaped portions, thereby creating a force for rotating the wind turbine. The blade functions in a similar manner also when the opening of the U-shape is closed so as to form a concave arc shape.

NEMOTO YUTAKA (JP)

PCT/JP2015/059720

October 08, 2015

March 27, 2015

Click for automatic bibliography generation  

NEMOTO YUTAKA (JP)

F03D11/00; F03D3/06

WO2011091519A1

2011-08-04

JP2008101536A	2008-05-01
JP2010249062A	2010-11-04
JP2006046306A	2006-02-16
US20110142659A1	2011-06-16

FUKUSHIMA Yasubumi (JP)
Yasufumi Fukushima (JP)

View/Download PDF      PDF Help

Previous Patent: TOBACCO PRODUCT FILTER AND TOBACCO PRODUCT

Next Patent: OPPOSED PISTON-TYPE DISC BRAKE DEVICE