DISPOSITIF DE VENTILATION POUR MACHINE ELECTRIQUE, NOTAMMENT POUR ALTERNATEUR DE VEHICULE AUTOMOBILE, ET MACHINE ELECTRIQUE POURVUE D'UN TEL DISPOSITIF

摘要

The invention concerns a ventilating device for electrical machine comprising a rotor (42) provided on the outside with protuberances (46) defining between them cooling channels (46) wherein circulates a coolant and a stator. The rotor is equipped with at least an axial ventilator (48) adapted to direct an air stream into the cooling channels. The invention is applicable to a ventilating device for a motor vehicle alternator.