Compressor

A compressor comprising:

• a cylinder including a chamber therein;
• a roller in the chamber and configured to compress a refrigerant received in the chamber, the roller including:
• a roller body movable in the chamber along an inner surface of the cylinder, and
• a vane portion extending from the roller body toward the cylinder and at least partially partitioning the chamber to form an inlet chamber into which the refrigerant is receivable and a compression chamber in which the refrigerant is compressible, the vane portion movable in a radial direction of the roller body based on movement of the roller body;
• a bushing in the cylinder and rotatable relative to the cylinder, the bushing covering at least a portion of the vane portion, and supporting movement of the vane portion along the radial direction;
• and
• a bushing cover surrounding an outer surface of the bushing, and rotatable along a rotation direction of the bushing,
• wherein the roller, the bushing, and the bushing cover are configured such that, with the roller body moved along the inner surface, the bushing supports movement of the vane portion in the radial direction and a size of the inlet chamber increases to move the refrigerant into the chamber and a size of the compression chamber decreases to compress the refrigerant moved into the chamber.