WINDMILL Russian patent published in 1998 - IPC

FIELD: wind-power engineering. SUBSTANCE: windmill has air-stream guide mechanisms. Draft tower has two outlets and is built up of internal diffuser incorporating turbine and mounted on top edge of bell mouth which is at bottom of tower channel, as well as head-structure tube, and concavo-convex shell. The latter is placed around diffuser with annular clearance between them and its convex part is tangentially coupled with bottom belt of head-structure tube. Angle of impact between ejecting channels of head structure and tube walls is greater than angle of conjugation between bottom belt of tube and shell. Concave part of shell rests on concave surface of bell mouth through its vertical plates radially arranged relative to turbine shaft and forms, together with concave surface of bell mouth, outlet slit. Edge of this annular nozzle faces inlet rack of air intake guide ring. Windmill is charged with air not only through channels of rear section of guide ring but also through those located on front side. This air charging provides for using energy of very weak winds. Head structure is reduced in size and becomes more streamlined. This is important in case of gust, storm, or severe hurricane. EFFECT: improved wind utilization factor. 2 cl, 2 dwg