Electrically operated coolant pump

Details Electrically operated coolant pump Electrically operated coolant pump

1998-09-16

2000-08-15

Walberg, Teresa

Pumps

Motor driven

Electric or magnetic motor

41742314, F04B 1700

Patent

active

061026743

ABSTRACT:
The invention relates to an electrically operated coolant pump with a rotor which is encompassed by a stator of the electromotor and comprises a rotor shaft with hollow design through which the liquid supply to the impeller is made, with the stator being arranged in a stator chamber of the motor housing and the rotor shaft being rotationally held in the motor housing, with the bearing of the rotor shaft being effected by way of roller bearings.
In order to increase the efficiency and reduce the wear and tear of the bearings, it is proposed that at least one roller bearing is arranged as a leakproof roller bearing and sealing elements are integrated in the roller bearing cages, and that the stator chamber which is separated in a leakproof manner from the conveying liquid is provided with a dry design.

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