Patent ID: 7952246

Claim:
An electric compressor comprising: a casing that is a substantially cylindrical member having a bottom face at one end and an opening at the other end, the inner circumferential surface of the cylinder being provided with a first inner circumference and a second inner circumference whose radius is larger than the first inner circumference, the inner circumferential surface having an inclination that becomes more distant from a central axis from the bottom face toward the opening; a compressing unit that compresses fluid; and a motor unit including a rotor and a stator that rotationally drive the compressing unit, wherein the first inner circumference and the second inner circumference are provided with a substantially cylindrical insertion surface whose radius is larger than the second inner circumference in a cross section perpendicular to the central axis of the casing and in which the stator is inserted; and at least the first inner circumference is provided with an enlarged diameter portion whose radius is larger than the insertion surface and which makes the distance from the opening-side end of the insertion surface to the opening substantially equal.