Patent ID: 8624451
Filing Date: 2014-01-07
Classification: H02K,Y10T

Abstract:
1. A permanent-magnet synchronous motor of a draining pump which runs in a primarily gaseous atmosphere environment, comprising: a permanent-magnet rotor for driving an impeller to rotate, a pump body for supporting the permanent-magnet rotor, a stator assembly including a stator core and a stator coil, wherein the stator coil is equipped with an enameled aluminum wire winding which is constructed by coiling an enameled aluminum wire, wherein only the enameled aluminum wire winding of the stator assembly is sealed in a container in order to prevent the enameled aluminum wire from being oxidized when it meets oxygen in air of the primarily gaseous atmosphere; an outside surface of a welding part of a lead-out wire with enamel for the enameled aluminum wire winding is treated by tinning or tin immersion; the welding part of the lead-out wire enamel of the enameled aluminum wire winding being treated by tinning or tin immersion is welded to a copper terminal with tin; and the outside surface of the enameled aluminum wire winding is covered with an insulating paper tape, and is then sealed with the container which is formed by one of plastic or epoxy resin.