| 摘要 |
PROBLEM TO BE SOLVED: To provide a windmill of good efficiency and good startability capable of efficiently converting wind power into rotary energy by optimizing a wind receiving part mainly in a paddle type windmill. SOLUTION: Since a center part of the paddle type windmill 6 has an outer diameter of 410 mm and an inner diameter of 210 mm and both ends have an outer diameter of 390 mm and an inner diameter of 190 mm and the both ends are smaller than the center part, inner and outer diameter of the both ends of the windmill which do not receive wind effectively is small and received wind energy of the center part of the windmill 6 efficiently catching wind can efficiently act and the windmill of good overall efficiency can be formed. Consequently, efficiency catching wind by overall windmill 6 is improved and generation torque at a time of same wind speed can be increased and efficiency can be improved. COPYRIGHT: (C)2007,JPO&INPIT
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