Patent ID: 8899930
Filing Date: 2014-12-02
Classification: B60K,F04D

Abstract:
1. A fan, for a ventilation assembly for a heat exchanger for a motor vehicle, comprising a plurality of angularly spaced external blades, which extend from a substantially cup-shaped central hub, the hub having an annular side wall and a bottom wall and defining internally a receptacle adapted to receive, at least partially, an electric motor; the hub further being provided with a plurality of internal ribs for ventilation of the motor, each rib having a longitudinal portion which extends from the side wall of the hub, and a radial portion which extends from and along the bottom wall of the hub, wherein each internal rib has an intermediate portion having a substantially arcuate, transversely protruding profile; the longitudinal portion of each internal rib having a profile whose spacing from the side wall of the hub increases, in an at least approximately linear manner, from a minimum value remote from the bottom wall of the hub to a maximum value adjacent the bottom wall.