Electric motor-driven water pump for a washing machine

摘要

An electric motor-driven water pump (1) for a washing machine, having: a pumping chamber (5) having an intake duct (11) and a drain duct (12); an impeller (6) housed inside the pumping chamber (5), rotating about a rotation axis (9), and having: a central hub (14) coaxial with the rotation axis (9), a round base plate (15) coaxial with the rotation axis (9) and surrounding the central hub (14), and a number of pumping blades (16), each connected at the bottom to the base plate (15) and laterally to the central hub (14); and an electric motor (7) having a revolving shaft (8) connected to the impeller (6) to rotate the impeller (6) about the rotation axis (9); each pumping blade (16) of the impeller (6) has a top edge (17) on the opposite side to the base plate (15), and which is curved so that an axial dimension of the pumping blade (16) substantially increases towards the rotation axis (9).