VANED FAN Russian patent published in 2016 - IPC F04D29/32 

FIELD: ventilation.

SUBSTANCE: claimed fan features low material input and, in spite thereof, high strength with respect to aerodynamic conditions in the car. Every vane of the fan is shaped to a transverse V along the vane shank in the backward direction. Note here that the aforesaid vane area shaped to a transverse V is fitted at least partially, downward onto the fan hub.

EFFECT: reduced concentration of masses at the butt between the fan vanes, lower labour input in production, accelerated production cycle.

9 cl, 8 dwg