| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wind force power generation device efficiently utilizing the wind force. <P>SOLUTION: Two wind mills 1 and 3 rotating upon receiving the force of natural winds for driving a generator 11 are installed coaxially overlapping in the direction to the front and rear. When both wind mills 1 and 3 in front and in the rear receive the wind and rotate, the rear wind mill 3 rotates in receiving not only the wind from the front but also the wind generated by rotation of the front wind mill 1. Particularly, the tip of each blade 12a of the front wind mill 1 rotates at a large peripheral speed, and the wind sent out backward from this part has a large wind speed, which the rear wind mill 3 will receive, and the rotations of the two wind mills 1 and 3 are performed efficiently. <P>COPYRIGHT: (C)2003,JPO |
