Patent ID: 8602752
Filing Date: 2013-12-10
Classification: F04C,H02K

Abstract:
1. An electric compressor, in which gas in a motor housing of a rotating electric machine is drawn into a compression chamber via an inlet port formed in the motor housing by a suction motion of a compression motion body based on rotation of a longitudinally extending rotary shaft driven by the rotating electric machine, and the gas in the compression chamber being discharged by discharge motion of the compression motion body based on the rotation of the rotary shaft, wherein the rotating electric machine includes: a rotor secured to the rotary shaft; a longitudinally extending annular stator having a first end proximate to the compression motion body and a second opposite end proximate to the inlet port; a plurality of radially extending teeth arranged on an inner circumference of the stator; a plurality of coils of different phases, which pass through slots between the teeth, each coil having a coil end extending beyond an end of the stator in the longitudinal direction of the rotary shaft, the plurality of coil ends form a coil end portion as a whole, the coil end portion having an outer circumferential periphery and an inner circumferential periphery; a first phase-to-phase insulation sheet having a belt-like shape and located between coils of different phases at the first end of the stator, the first phase-to-phase insulation sheet extends to encompass an entire circumference of the rotor; and a second phase-to-phase insulation sheet having a belt-like shape and located between coils of different phases at the second end of the stator, the second phase-to-phase insulation sheet extends to encompass an entire circumference of the rotor, wherein, the inlet port drawing gas from the outside of the motor housing, an inflow direction of the gas flowing through the inlet port intersects at least one of the coil ends, the outer circumferential periphery of the coil end portion at the second end of the stator includes a covered portion, wherein a plurality of the coil ends are covered by the second phase-to-phase insulation sheet and an uncovered portion wherein a plurality of the coil ends are not covered by the second phase-to-phase insulation sheet, and a part of the second phase-to-phase insulation sheet which covers an intersection surface of the covered portion intersecting the inflow direction faces the inlet port.