WIND MOTOR Russian patent published in 2006 - IPC F03D3/00 

FIELD: wind-power engineering.

SUBSTANCE: proposed wind motor has windwheels with bow-shaped blades provided with air passages formed by bow-shaped partitions and lower and upper covers fastened together; windwheels are provided with three bow-shaped blades located at angle of 120° relative to one another; each blade has similar even number of bow-shaped air passages; one half of these passages is connected with air passages of adjacent blade located in the clockwise direction and other half is connected with air passages of adjacent blade located in counter-clockwise direction. Upper and lower covers of windwheels have concave bow-shaped edge of equal radius in forming part of windwheel blade in line of radius; centers of radii are separated at angle of from 20° to 50°; center of bow-shaped concave edge of lower cover in one half of windwheels is shifted relative to center of bow-shaped concave edge of upper cover in clockwise direction and in counter-clockwise direction in other half of windwheels. Wind motor is assembled in such way that concave bow-shaped edges of blades of upper cover of lower windwheels are matched with concave bow-shaped edge of blades of lower covers of upper windwheels, thus forming three helical cavities entrapping wind on lateral surface.

EFFECT: enhanced efficiency of use of wind force; reduction of wind velocity threshold; enhanced serviceability of wind motor.

2 cl, 5 dwg