Electrically driven axial fan for motor vehicle air-conditioning system

摘要

The air-conditioning condenser (3) is cooled by the flow of air from a fan wheel (7) driven by an electric motor (5) set into its hub (15). Vents are arranged in the wall of the hub so that cooling air is guided by shovel-shaped ribs (29) radially outwards over the internal surface (33) of the base (35) of the hub.The vents lie on the low-pressure side (49) ahead of the fan blades (9) so that the air escapes from the hub into the atmos. by the shortest path.