Patent ID: 9494137
Filing Date: 2016-11-15
CPC Classification: F03D,F05B,Y02E,Y02P

Claim Text:
1. A rotor for wind power generation comprising: a vertically or horizontally oriented rotating shaft; a plurality of main blades equidistantly spaced apart from one another; and a plurality of auxiliary blades coupled to each of the plurality of main blades, each of the plurality of auxiliary blades being spaced from each other in a chordwise direction and configured to be bent according to a direction of wind, wherein each of the plurality of auxiliary blades is coupled to a distal end of each of the plurality of main blades so as to extend from each of the plurality of main blades, wherein each of the plurality of main blades has a plurality of boss insertion recesses located at the distal end thereof, and each of the plurality of auxiliary blades has an insertion boss located at a proximal end thereof, such that each of the plurality of main blades and the plurality of auxiliary blades are coupled to each other as the insertion boss is inserted into each of the plurality of boss insertion recesses, wherein the plurality of auxiliary blades are arranged at a same elongated surface of each of the plurality of main blades in a longitudinal direction of each of the plurality of main blades, wherein a thickness of each of the plurality of auxiliary blades is gradually reduced as each of the plurality of auxiliary blades extends from the distal end of each of the plurality of main blades, and wherein each of the plurality of auxiliary blades is coated with a soft material to reduce friction noise in the wind.