The electrical pump for a vehicle motor cooling system has a running wheel keyed to the rotor cylinder which has permanent magnet zones in the cylinder walls in an inexpensive and lightweight structure

摘要

The electrical pump to impel a medium in a heating or cooling system, and especially a canned pump, has a stator and a rotating rotor. The rotor is a hollow rotor cylinder with permanent magnet zones in the cylinder wall, and carries a running wheel at an end side. A rotor bearing is within the hollow zone. The running wheel (9) has a positive fit at the end wall of the rotor cylinder (13) in the peripheral direction. The running wheel (9) is in a force fit or positive fit at the end wall of the rotor cylinder (13) in the axial direction. The running wheel is of plastics. The rotor cylinder (13) is of a material which can be magnetized, and especially a plastics with added material which can be magnetized.