IMPELLER OF AXIAL FAN WITH BLADE TURNING MECHANISM Russian patent published in 2012 - IPC F04D29/36 

FIELD: machine building.

SUBSTANCE: impeller of axial fan with blade turning mechanism includes blades installed by means of bearing bodies on power rib of impeller housing, connected by means of gear wheels and rods with adjusting disc conjugated by means of radial thrust bearings to the adjusting assembly. At that, its housing is detachable in horizontal plane, the lower part of which is fixed by means of hinge bearings on movable carriage arranged in fan sleeve and connected to crank drive by means of hinge bearing.

EFFECT: preventing the loads and excess heating of the adjusting assembly housing during rotation of blades on impeller stroke.

3 dwg