Title:
垂直軸風車および風力発電装置
Document Type and Number:
Japanese Patent JP6904766
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a wind power generation device excelling in power generation efficiency and making less noise.SOLUTION: A vertical-axis wind turbine comprises blades which are connected to a vertical main shaft through support bodies. The blade has a main blade part and blade end inclined parts. The blade end inclined parts are obliquely bent and extend from both ends of the main blade part toward the vertical main shaft. In the blade end inclined part, at least a portion of an intersection line between the outer surface and a first cross section taken along the vertical main shaft through a first position in the horizontal direction has a first radius of curvature R11. In the blade end inclined part, at least a portion of an intersection line between the outer surface and a second cross section taken along the vertical main shaft through a second position in the horizontal direction, which is different from the first position, has a second radius of curvature different from the first radius of curvature R11.SELECTED DRAWING: Figure 5
Inventors:
Ken Ito
Masato Yoshino
Tatsuo Kawase
Masato Yoshino
Tatsuo Kawase
Application Number:
JP2017082224A
Publication Date:
July 21, 2021
Filing Date:
April 18, 2017
Export Citation:
Assignee:
ntn corporation
International Classes:
F03D3/06; F03D80/00
Domestic Patent References:
| JP2016205204A | ||||
| JP2014101790A |
Foreign References:
| WO2016148015A1 | ||||
| EP2594784A2 |
Attorney, Agent or Firm:
Fukami patent office