Electrical machine i.e. permanent magnet-excited electronically commutated engine, for driving pump i.e. water pump, in motor vehicle, has blower arranged in scatter field arising at axial end of rotor, and coupled with flux of rotor

摘要

The machine has a separating can (5) for separating a rotor (2) from a stator (4) in a sealed manner. An blower (7) is arranged coaxial to the rotor. The blower is arranged outside the separating can, and the rotor is arranged within the separating can. The blower is arranged in a scatter field (6) arising at an axial end (2a) of the rotor. The rotor projects in an axial direction over an iron core (4a) of the stator. The blower is coupled with a leakage flux of the rotor and rotated with a rotation of the rotor. The blower is formed from magnetizable plastic.