Title:
VERTICAL AXIS WIND TURBINE AND WIND POWER GENERATOR
Document Type and Number:
Japanese Patent JP2018155133
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a vertical axis wind turbine capable of restricting occurrence of noise, showing an entire superior vertical axis wind turbine in respect to noise and resistance under an idling operation.SOLUTION: A vertical axis air turbine has a blade 9 connected to a vertical axis through a supporter. The blade 9 includes a main blade part 10 extending in parallel with the vertical axis, and winglets 11 extending from both ends of the main blade part 10 in slant folded and bent manner at a side of the vertical axis. A lateral cross sectional shape of the blade 9 is a shape that either the radial outside or inside surfaces are gradually bulged out from both front and rear ends in a rotating and advancing direction of the blade 9 in such a way that a thickness of the blade 9 may show the highest thickness near its front end. The winglets 11 has a shape that a width of the blade 9 in the rotating advancing direction may become narrow as it approaches to its extremity end. A top point position P of each of the winglets 11 shows that a distance B2 from the rear end in the rotating advancing direction is in a range of 50% to 83% in respect to a width B1 in the rotating advancing direction of the blade 9.SELECTED DRAWING: Figure 3
Inventors:
ITO TAKESHI
Application Number:
JP2017051024A
Publication Date:
October 04, 2018
Filing Date:
March 16, 2017
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F03D3/06
Domestic Patent References:
| JP2016205204A | 2016-12-08 |
Foreign References:
| WO2005038251A1 | 2005-04-28 |
Attorney, Agent or Firm:
Masashi Noda
Shuji Sugimoto
Shuji Sugimoto