WINDMILL Russian patent published in 2002 - IPC

FIELD: wind-power engineering; conversion of wind energy to other kinds of energy. SUBSTANCE: windmill has windwheel made in the form of rim and hub joined together by means of radial spokes carrying Savonius rotors which are free to rotate about their axes and to displace along axes of mentioned spokes. This displacement along spider axes is effected with aid of double-arm lever one of whose arms is coupled through link gear with bottom bearing of Savonius rotor; other arm spring-loaded relative to windwheel shaft mounts weight for adjusting centrifugal force; paired blades of each tier of rotor are spirally offset relative to adjacent blades through 60 deg. and spaced apart from adjacent blades through spacer disks whose diameter is greater than that of cylinder formed by rotation of ends of paired Savonius-rotor blades. Proposed design enables raising windmill efficiency by 5-8%. EFFECT: enhanced tractive force coefficient and efficiency, simplified design of windmill. 4 dwg