ROTARY WINDMILL Russian patent published in 2013 - IPC F03D3/00 F03D3/06 

FIELD: engines and pumps.

SUBSTANCE: rotary windmill comprises vertical shaft, top and bottom parallel discs rigidly interconnected by blades bent radially to make air channels communicated in central chamber. Said discs extend beyond ends of the blades. Disc extended parts are bent outward and provided with radial cuts. Channels between adjacent blades diverge toward the shaft. Arc length of the blade cylindrical surface equals 90°±3°. Height of hubs rigidly coupled with appropriate discs and shaft equals that on adjoining disc bent section.

EFFECT: simple and reliable design, increased power output, rotation at wind low velocity.

4 cl, 2 dwg