Patent ID: 8651841

Claim:
A rotary compressor comprising: at least one cylinder installed in an inner space of a hermetic container, having a compression space for compressing a refrigerant, and provided with a vane chamber isolated within the inner space of the hermetic container; a plurality of bearings coupled to both upper and lower sides of the at least one cylinder so as to cover the compression space of the at least one cylinder and the vane chamber; at least one rolling piston configured to compress the refrigerant by being orbited in the compression space of the at least one cylinder; at least one vane slidably coupled to the at least one cylinder and configured to partition the compression space into a suction chamber and a discharge chamber in cooperation with the at least one rolling piston, at least one vane being supported by a refrigerant filled in the vane chamber of the at least one cylinder; and a mode switching unit configured to vary an operation mode of the rotary compressor by selectively supplying a refrigerant of suction pressure or a refrigerant of discharge pressure to the vane chamber of the at least one cylinder, wherein the at least one cylinder is provided with a connection hole for allowing the vane chamber to be communicated with the mode switching unit, the vane chamber of the at least one cylinder being provided with a connecting protrusion protruded from an inner circumferential surface of the vane chamber with being stepped; and wherein a connection tube is inserted into at least a portion of the connection hole where the connecting protrusion is stepped.