| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wind turbine rotating while using a lift acting on blades to the maximum. <P>SOLUTION: The wind turbine 30 includes a rotating shaft 31 in the horizontal direction, a first blade group 40 connected to one end of the horizontal rotating shaft 31, and a second blade group 50 connected to the other end. Each of the blade groups 40, 50 comprises four blades 41 or 51 radially extending from the horizontal rotating shaft 31. The blades 41, 51 have an aerofoil section having no torsion along the radial direction and the blade chord connecting the leading edge to the trailing edge of the blade 41 or 51 is almost parallel to a wind direction so that the direction of the lift acting on the blades 41, 51 agrees with the rotation direction of the blades 41, 51. With this, almost 100% of the lift acting on the blades 41, 51 can be converted to rotation torque of the horizontal shaft 31 and the high efficiency of wind force conversion can be obtained. <P>COPYRIGHT: (C)2011,JPO&INPIT |
