| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a windmill that is quick in start from a stop state and improved in turning efficiency. <P>SOLUTION: This windmill includes an eccentric part 3 positioned at a wind upstream side at an upper end of a column 2a. Arms 7, 9 are provided opposing each other at an upper part and a lower part, at rotation parts 6, 6 provided at an upper part and a lower part of the column. A blade member 13 is provided at a tip thereof. The blade member 13 includes a blade body 27 between an upper and a lower frame piece 25, 26, and the upper and the lower frame piece 25, 26 are connected to the blade body 27 at a rotary connection part. The eccentric part 3 and a front side connecting part 53 existing at a front side of the rotary connecting part are connected by a regulating rod 111, and the blade member 13 turns around the column. At the wind upstream side and the wind downstream side blade member, the frame pieces rotate through the regulating rod. The wind upstream side wind member has an asymmetric shape in which a chord shows an inclined state that a turning direction front part is farther from the column than a rear part, and a surface of the blade cross section near the column shows a convex surface. The wind downstream side wind member has an asymmetric shape in which a chord shows an inclined state that a front part is closer to the column than a rear part, and a surface of the blade cross section far from the column shows a convex surface. <P>COPYRIGHT: (C)2010,JPO&INPIT |
