Rotor and axial ventilator comprising an accessory axial fan

Abstract

A rotor for a large-diameter axial ventilator for industrial use. The rotor includes a hub and n blades, where each rotor blade includes a root portion for the structural connection to the hub and an aerodynamic portion; the rotor further includes a coaxial accessory axial fan including n radially extending vanes which, in an axial view, is substantially included within the region P defined by the n radially inner ends of the aerodynamic portions of the rotor blades. The embodiments further relates to a large-diameter axial ventilator for industrial use including such a rotor.

Dependencies are inferred from the claim text.