SUBMERSIBLE LINEAR ELECTRIC MOTOR Russian patent published in 2015 - IPC H02K41/02 

FIELD: electricity.

SUBSTANCE: invention relates to electrical engineering. The technical result consists in decrease of losses. The submersible linear electric motor contains located inside a housing stator with magnetic circuit, bearing elements and winding. The moving part - runner is located inside the stator and is designed with a possibility of reciprocating motion in an axial direction. The winding is connected with a power circuit and is implemented as ring spools, the plane of which is perpendicular to the centreline of the electric motor. The spools are located between the magnetic circuit elements. At least a part of the external cylindrical surface of bearing elements contacts mechanically with the internal surface of the housing. The magnetic circuit is implemented as a set of packages each of which is assembled in a tangential direction from stalloy sheets, with a comb shape in an axial direction. The packages in a cross section are located inside the housing radiately so that the external surface of the package back contacts mechanically with the internal surface of the housing. The internal surface of the package back between a part of teeth contacts with one of the bearing elements. Inside the stator, contiguous to the housing, the longitudinal channels are made, along which the fluid circulates at reciprocating motion of the runner.

EFFECT: electric motor has a constant internal volume, no exchange of fluid inside the electric motor with formation fluid occurs.

3 cl, 7 dwg