Title:
風水車及び風水車の設計方法
Document Type and Number:
Japanese Patent JP5496788
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a wind mill which has blades moving at a low speed, and can be installed safely in the city.SOLUTION: A wind mill includes a rotary shaft 10 arranged substantially orthogonal to a main stream 20 of wind, and a blade 13 having a cross-sectional shape in which a dynamic lift is generated by the main stream 20, and rotates the rotary shaft 10 by the dynamic lift and drag generated on the blade 13. The blade 13 is connected to the rotary shaft 10 via link mechanisms 11, 12 and 14 having a plurality of nodes, and a fixing position 19 of the blade of the link mechanisms draws an 8-shaped trajectory curve for one rotation of a rotary shaft 10. The wind mill has a blade moving at a low speed, and has high safety. This wind mill increases generation energy by increasing blade area. The number of rotations is very small, thereby preventing wind mill noise (wind noise or low-frequency noise or the like of impeller).
Inventors:
Hiroyuki Hirahara
Hideaki Nozawa
Hideaki Nozawa
Application Number:
JP2010140766A
Publication Date:
May 21, 2014
Filing Date:
June 21, 2010
Export Citation:
Assignee:
Saitama University
International Classes:
F03D3/00; F03B17/06; F03D3/06
Domestic Patent References:
| JP2004239253A |
Foreign References:
| WO2008123154A1 |
Attorney, Agent or Firm:
Ohashi
Hayashi Hiroki
Hayashi Hiroki