Electric compressor with improved insulation performance

An electric compressor, comprising:

• a main housing extending in a lengthwise direction;
• a motor part disposed in the main housing and comprising:
• a stator comprising a rotor accommodating portion;
• and
• a rotor rotatably disposed in the rotor accommodating portion of the stator;
• a compression part rotatably connected to the motor part and configured to receive a rotational force from the motor part and compress a refrigerant;
• and
• an inverter part electrically connected to the motor part and configured to apply power to the stator,
• wherein the motor part is disposed in a motor room formed inside the main housing,
• wherein the stator comprises a plurality of insulating protrusions protruding from an outer circumferential surface of the stator to increase a surface area of the outer circumferential surface,
• wherein the plurality of insulating protrusions is configured to be brought into contact with an inner circumferential surface of the motor room,
• wherein the outer circumferential surface comprises:
• a first region comprising the plurality of insulating protrusions spaced apart from one another by a first predetermined distance;
• and
• a second region comprising adjacent insulating protrusions, among the plurality of insulating protrusions, spaced apart from each other by a second predetermined distance different from the first predetermined distance,
• wherein a coupling protrusion is configured to protrude inward from the inner circumferential surface of the motor room, and wherein the coupling protrusion is configured to be inserted into a coupling space formed between the adjacent insulating protrusions located in the second region and spaced apart from each other by the second predetermined distance,
• wherein the first region and the second region are asymmetrically formed with respect to an arbitrary straight line passing through a central axis of the stator on a cross-section of the stator,
• wherein the first region is formed in an upper semicircle and a part of a lower semicircle of the outer circumferential surface, and wherein the second region is formed in a part of the lower semicircle of the outer circumferential surface, and
• wherein the second predetermined distance between the adjacent insulating protrusions defining the coupling space is formed to be greater than the first predetermined distance between adjacent insulating protrusions located in the first region.