ROTARY PUMP, IN PARTICULAR FOR DISHWASHERS OR WASHING MACHINES

摘要

In a rotary pump with a synchronous electric motor (2), the rotor (8) and the output shaft (9) of the electric motor (2) or the output shaft (9) of the electric motor (2) and the impeller (10) of the rotary pump are connected in angularly fixed manner to each other by a viscous joint (13; 20) defined by a viscous fluid interposed between two coaxial coupling members (5, 8; 11, 17), one of which has at least one flow-orienting member (15) for resisting flow of the viscous fluid differently in the two rotation directions of the impeller (10).