BigPatents India

A broad width backward aerofoil bladed fan design comprising an impeller (01) having backward aerofoil bladed design, said impeller being provided with a back center plate, fitted with an aerofoil blade (02) Having predetermined camber, angle of incidence, leading and trailing edge; said impeller being housed within a spiral casing (03) which acts as a diffuser to recover the kinetic energy of the fluid leaving from impeller, diffusivity angle and geometry shape of said impeller being selected using CFD where as the number of blades and blade actuations being furnished based on controllability aspects.