| 摘要 |
Technologies which use a vertical axis windmill effectively utilizing wind force energy by rotating its blades as a convenient and highly efficient windmill with extensive scope of application, wherein the wind direction response mechanism of blades which does not need a wind direction follow-up by a windmill main body and is high in responsiveness is structured so that it converts a directional change of a wind direction supporting tail unit into the directional change of the blades. The mechanism is incorporated in a blade supporting arm to protect it and simplify the windmill and disposed distributedly to each blade for compactness, and windmill functions are expanded so that they can meet the requirements for increased revolution speed of the windmill. In addition, deviated optimum settings of blade directions provide those technologies which increase the performance and scope of application of the windmill such as a speed control method to reduce torque and a blade direction resetting method.
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