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Title:
VARIABLE PITCH WIND WHEEL OF WIND GENERATOR
Document Type and Number:
WIPO Patent Application WO/2010/108453
Kind Code:
A1
Abstract:
A variable pitch wind wheel of wind generator, including a wind-wheel hub (1) coaxially arranged on a wind-wheel shaft. At least three evenly distributed blade shank seats (11) are fixedly arranged on the periphery of the wind-wheel hub (1). A blade shank shaft (2) is coaxially arranged on the blade shank seat (11), and a blade (3) is fixedly arranged on the blade shank shaft (2). A centrifugal variable pitch mechanism for regulating the rotating speed of the wind wheel is arranged on the wind wheel hub (1). When the rotating speed of the wind wheel exceeds the rated rotating speed, it is regulated by the centrifugal variable pitch mechanism, so as to avoid the rotating speed of the wind wheel to be greatly increased due to the wind speed rise and make the wind wheel run stably at the rated rotating speed.

Inventors:
XU JIANXIONG (CN)
Application Number:
PCT/CN2010/071342
Publication Date:
September 30, 2010
Filing Date:
March 26, 2010
Export Citation:
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Assignee:
XU JIANXIONG (CN)
International Classes:
F03D7/04; F03D1/06
Foreign References:
CN101520023A2009-09-02
EP0043872A11982-01-20
GB2010980A1979-07-04
FR2686656A11993-07-30
Other References:
CHENG RONGXIANG ET AL.: "The center main spring centrifugal variation paddle device for wind energy conversion system", RENEWABLE ENERGY, vol. 124, June 2005 (2005-06-01), pages 59 - 60
Attorney, Agent or Firm:
SHANGHAI ZHI XIN PATENT AGENT LTD. (Qi26F, Zhijun Building,1223 Xie Tu Road, Shanghai 2, CN)
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