Stator assembly with aluminum windings, electric motor and discharge pump for household appliances comprising said stator assembly

摘要

A stator assembly (1) comprising: a ferromagnetic stator core (2); at least two stator coils (3) of enameled aluminum wire wound around said stator core (2); and a heat-dissipating envelope (4; 61) surrounding said stator coils (3), the heat-dissipating envelope (4; 61) comprising one or more degassing holes (5) traversing the envelope so that the stator coils (3) are in communication with the external environment.

主权项

1. A stator assembly comprising:
a ferromagnetic stator core; at least two stator coils of enameled aluminum wire wound around said stator core; and a heat-dissipating envelope surrounding said stator coils; wherein said heat-dissipating envelope comprises one or more degassing holes traversing the envelope so that the stator coils are in communication with the external environment; wherein the stator core has a U-shaped structure with two parallel arms connected together by a bridging portion, each arm having a free end defining a stator pole, each of the stator coils being wound on one of the two arms, the heat-dissipating envelope covering both arms leaving their free ends and the bridging portion free; comprising two reels fitted on the two arms of the U-shaped structure, said reels comprising a central core supporting the stator coils and side walls laterally retaining said stator coils, said side walls cooperating with an overmolding provided over the stator coils to form the heat-dissipating envelope; and wherein said degassing holes are provided on at least one of the side walls of the reels.