Patent ID: 11891995
Assignee: LG ELECTRONICS INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A rotary compressor, comprising:
a cylinder having an inner peripheral surface that defines a compression space, and provided with a suction port configured to communicate with the compression space and through which refrigerant is suctioned into the compression space;
a roller rotatably provided in the compression space of the cylinder, and having a plurality of vane slots that provides a back pressure at one side thereinside and that is provided at a predetermined interval along an outer peripheral surface of the roller; and
a plurality of vanes slidably inserted into the plurality of vane slots, respectively, and configured to rotate together with the roller, front end surfaces of which come into contact with the inner peripheral surface of the cylinder due to the back pressure to partition the compression space into a plurality of compression chambers, wherein high-pressure refrigerant is accommodated between one vane of the plurality of vanes and the inner peripheral surface of the cylinder, and wherein the back pressure is maintained at a predetermined level to allow the front end surface of the one vane of the plurality of vanes to come into contact with the inner peripheral surface of the cylinder until the high-pressure refrigerant is bypassed to the suction port.