WIND MOTOR Russian patent published in 2010 - IPC F03D7/06 

FIELD: power industry.

SUBSTANCE: wind motor includes rotor installed with possibility of rotation relative to vertical axis, blades, each of which is fixed axisymmetrically on rotor housing with possibility of being turned under wind influence relative to the appropriate vertical axis and made in the form of the main part and flap, which together form a low arched profile of the blade, which is symmetrical relative to its chord connecting the profile points which are located at maximum distance from each other; at that, flap is hinged to the main profile part on the above profile chord. Wind motor also includes flap position control devices and blade turning locks fixed on rotor housing. Each flap position control device is made in the form of a pin located on the appropriate flap with possibility of being moved in guide slot made on rotor housing. Besides each guide slot contains three smoothly adjoined arches, where middle arch has maximum radius, and centres of all the three arches coincide with turning axis of the appropriate blade.

EFFECT: though the construction is simple, the device ensures change of blade geometry within certain limits in compliance with turning angle relative to rotor housing at their free turning under wind influence.

4 cl, 4 dwg