WINDMILL Russian patent published in 2006 - IPC F03D3/00 

FIELD: wind-power engineering.

SUBSTANCE: proposed windmill that can be used to convert wind energy into mechanical rotation of windmill shaft coupled with various mechanical apparatuses or mechanical energy converters has windwheel with vertical axis of revolution provided with at least three wind-responding members fixed with radial yokes secured on vertical axis of revolution perpendicular to this axis; external ends of yokes rest on circular support; in addition, windwheel is mounted for interaction with electric power generator. Novelty is that each wind responding member is made in the form of slotted wing incorporating at least two parallel crescent-section blades whose section is convex in direction of windwheel rotation and concave on wind-responding surface end; slotted-wing blade length and width increas from its wind responding surface by minimum 5% of dimensions of smallest adjacent one; cross-sectional area of largest blade of each slotted wing is tear-shaped for which purpose profile curvature radius in central part of its convex surface is smaller than that of remaining slotted-wing blades.

EFFECT: simplified design, reduced size and mass of windwheel, enhanced wind-energy use factor.

2 cl, 4 dwg