Liquid pump esp. circulating pump for rinsing liquid in dishwasher - has pump impeller of plastic and its blades on one side are arranged on closed circular disc and on other side covered with circular ring disc with central opening

摘要

The central opening on one side of the impeller forms a suction opening for the rinsing liquid so that the inner blade ends radially reach the region of the central opening. The pump impeller (5,7,8,9) is mfd. in one piece. A cylindrical collar (9) is formed on the ring disc (8) of the impeller, surrounding the central opening (10). The collar points away from the rear side of the circular disc (7). ADVANTAGE - Impeller can be produced with stable shape which does not deform under load, using simple means.