Scroll compressor

A scroll compressor, comprising:

• a rotary shaft;
• an electric motor that rotates the rotary shaft;
• a housing including a motor chamber that accommodates the electric motor;
• a fixed scroll accommodated in the housing and fixed to the housing;
• and
• an orbiting scroll that orbits as the rotary shaft rotates, wherein
• the fixed scroll includes:
• a fixed end wall;
• and
• a tubular peripheral wall that extends from the fixed end wall toward the orbiting scroll,
• the scroll compressor further comprises:
• a compression chamber defined by the fixed scroll and the orbiting scroll, the compression chamber compressing fluid;
• an outer peripheral passage that is defined by an inner peripheral surface of the housing and an outer peripheral surface of the peripheral wall, fluid flowing into the outer peripheral passage from the motor chamber;
• and
• a suction passage provided in the peripheral wall, the suction passage drawing in the fluid from the outer peripheral passage to the compression chamber,
• the outer peripheral surface of the peripheral wall includes an upstream-side outer peripheral surface located between the suction passage and the electric motor in an axial direction of the rotary shaft,
• a distance from an axis of the rotary shaft to the upstream-side outer peripheral surface in a direction orthogonal to the axial direction of the rotary shaft varies in the axial direction of the rotary shaft,
• the upstream-side outer peripheral surface is inclined with respect to the axis of the rotary shaft such that the distance from the axis of the rotary shaft to the upstream-side outer peripheral surface in the direction orthogonal to the axial direction of the rotary shaft gradually increases from the motor chamber toward the suction passage in the axial direction of the rotary shaft, and
• an inclination angle of the upstream-side outer peripheral surface with respect to the axis of the rotary shaft varies in a circumferential direction of the peripheral wall.