Title:
ROTARY VANE, ROTATING DEVICE, AND POWER GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/163043
Kind Code:
A1
Abstract:
This wind power generation device comprises a plurality of rotary vanes 15 around a rotation axis. The rotary vanes 15 each have a front vane surface 16 curved so as to be parallel to the rotation axis and protrude forward in the rotation direction, and a rear vane surface 17 disposed on the back-surface side of the front vane surface 16, curved so as to be parallel to the rotation axis and protrude rearward in the rotation direction, and having a smaller curvature depth than the front vane surface 16. The front vane surface 16 has a first curved surface 19 that constitutes a portion separated from the rotation axis and that is formed facing forward in the rotation direction from an outside end part 21 of the rotary vane 15, and a second curved surface 20 that constitutes a portion near the rotation axis L1,that is formed facing rearward in the rotation direction from a vertex 18 of the front vane surface 16 so as to join into an inside end part 22, and that has a shorter surface length in plan view than the first curved surface 19. In the first curved surface 19, a recess 23 is formed in a position nearer the outside end part 21 than the vertex 18 of the front vane surface 16. Thus, a rotary vane is provided with which rotation efficiency can be improved in rotary vanes that rotate due to a fluid.
Inventors:
KATO MASAHARU (JP)
Application Number:
PCT/JP2021/039050
Publication Date:
August 04, 2022
Filing Date:
October 22, 2021
Export Citation:
Assignee:
ECO TECH CO LTD (JP)
International Classes:
F03D3/06; B62D35/00; F03D9/32
Domestic Patent References:
| WO2014175613A1 | 2014-10-30 | |||
| WO2014181585A1 | 2014-11-13 |
Foreign References:
| JP2008082251A | 2008-04-10 | |||
| JP3905121B1 | 2007-04-18 | |||
| JP2008082251A | 2008-04-10 |
Attorney, Agent or Firm:
HARIKAWA, Takashi (JP)
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