Compressor

A compressor comprising:

• a cylinder in which a piston is accommodated, the cylinder defining a compression space that is configured, based on the piston reciprocating in an axial direction, to compress a refrigerant gas therein;
• and
• a frame configured to accommodate the cylinder therein and defining a gas hole configured to pass the refrigerant gas therethrough,
• wherein a first side of the gas hole is in fluid communication with an outside of the frame to receive the refrigerant gas, and a second side of the gas hole is in fluid communication with a gas pocket that is defined between an inner circumferential surface of the frame and an outer circumferential surface of the cylinder,
• wherein the outer circumferential surface of the cylinder provides a plurality of restrictor regions partitioned by a gas supply passage, the gas supply passage defined to be recessed at the outer circumferential surface of the cylinder and in fluid communication with the gas hole,
• wherein each of the plurality of restrictor regions defines a gas intake hole that is in fluid communication with an inner space of the cylinder and the gas pocket,
• wherein the gas intake hole is defined at an outermost circumferential surface of the restrictor region provided at the outer circumferential surface of the cylinder,
• wherein the gas intake hole is defined within each of the plurality of the restrictor regions, and
• wherein an interval between the inner circumferential surface of the frame and the outer circumferential surface of the cylinder is provided within a range of 5 to 10 micrometers in the restrictor region.