| 摘要 |
Each radially extending blade (12) of a wind motor is fitted near its tip with an auxiliary vane (13) which can result in an increase of efficiency. Different from known devices each auxiliary vane (13) is placed with respect to the blade (12) so that the low-pressure peaks of the vanes (13) and the blades (12) are separated one from the other rotation by more than 0.3-times the length of the largest chord. Preferably the auxiliary vanes (13) are designed so that its center of gravity lies in front of the blade (12). The lengthwise axis of the auxiliary vanes (13) makes an angle alpha lying between 10 DEG and 40 DEG with the rotational axis (11) of the blades (12), the lateral edges (17) of the vanes (13) is bevelled rearward with respect to the leading edge (16) under an angle beta from 15 DEG to 45 DEG and the surfaces meeting surfaces meeting at the lateral edges (17) make an angle UPSILON which approaches zero value. The lines generating the underside of the vanes (13) are nearly straight. The imaginary extensions of the surfaces of adjacent vanes (13) as seen from the surface comprising the blades (12), at least contact each other. |
