Fluid compressor

A fluid compressor comprising:

• a case that defines an external appearance of the fluid compressor;
• a fixed scroll disposed in the case and fixed to the case;
• an orbiting scroll that is disposed at one side of the fixed scroll, that is engaged with the fixed scroll, and that defines a compression chamber with the fixed scroll;
• a motor configured to rotate a rotating shaft for transmitting power to the orbiting scroll;
• and
• at least one anti-rotation unit movably coupled to a circumferential side surface of the orbiting scroll and configured to limit rotation of the orbiting scroll, the at least one anti-rotation unit comprising:
• a plate, a first portion of the plate being disposed at the fixed scroll, and
• at least one pin that extends from the plate to the orbiting scroll and is configured to insert into the circumferential side surface of the orbiting scroll in a direction toward an axis of the rotating shaft,
• wherein the fixed scroll defines a first recess that receives the first portion of the plate, and
• wherein the orbiting scroll defines at least one slide hole that is depressed from the circumferential side surface of the orbiting scroll toward the axis of the rotating shaft and configured to receive the at least one pin toward the axis of the rotating shaft-.