Device and method for adjusting angle-of-attack of wind blades in lift-type vertical axis wind turbine
US7780411B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 15, 2008 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Jan 30, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S415/907
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device for adjusting an angle-of-attack (δ) of blades in a lift-type vertical axis turbine comprising a vertical rotating axis, a rotatable cantilever support wing fixed on the vertical rotating axis, a wind rotor comprising a plurality of blades mounted on the cantilever support wing, at least one cam disposed along an axial direction of the vertical rotating axis, the axial direction of the cam being parallel to the rotating axis, and for any point in a contour line of the cam, the angle of attack δ being set according to the following formula: δ=β−α, wherein δ is the angle of attack; β is an azimuth angle; α is a rotating angle for blades; and δ, β, and α are preset values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.