CPC F04C 29/12 (2013.01) [F04C 18/356 (2013.01); F04C 18/3564 (2013.01); F25B 31/026 (2013.01); F04C 2210/26 (2013.01); F04C 2250/101 (2013.01); F05B 2210/14 (2013.01)] | 15 Claims |
1. A rotary compressor comprising:
a casing forming an outer shape;
a cylinder having an internal space, disposed inside the casing and comprising:
a rolling piston configured to rotate eccentrically in the internal space,
a vane configured to contact the rolling piston and divide the internal space into a suction chamber and a compression chamber, and
a main suction port connecting the suction chamber to an outside of the cylinder;
a first flange disposed above the cylinder; and
a second flange disposed below the cylinder,
wherein the main suction port comprises:
a sub suction port extending in a direction in which at least one among the first flange and the second flange is disposed;
a first main suction port disposed at an outer circumferential surface of the cylinder and has a first cross-sectional area; and
a second main suction port disposed at an inner circumferential surface of the cylinder, connected to the first main suction port, and has a second cross-sectional area smaller than the first cross-sectional area; and
wherein the first and the second main suction ports each have a constant diameter in their cross-sections,
wherein at least one among the first flange and the second flange includes a flow path groove connecting the sub suction port and the suction chamber,
wherein the first main suction port has a circular shape, and
wherein the second main suction port has an elliptical shape in which a cross section has a short axis disposed in a rotational direction of the rolling piston.
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