Patent ID: 6935853

Claim:
A variable capacity rotary compressor, comprising: a partition plate; a housing installed in a hermetic casing, and partitioned into first and second compression chambers having different capacities by the partition plate; a rotating shaft to rotate in the first and second compression chambers; first and second eccentric units mounted to the rotating shaft to be placed in the first and second compression chambers, respectively, and to execute a compression rotation and an idle rotation according to a rotating direction of the rotating shaft, the first and second eccentric units being oppositely operated; first and second vanes installed in the first and second compression chambers, respectively; and a pressure control unit to apply a pressure of an outlet side of the compressor to one of the first and second compression chambers which executes the idle rotation, the pressure control unit including: a path control channel vertically provided through the partition plate to be placed at a position outside the first and second compression chambers; a valve member movably set in the path control channel; a communicating path to make an interior of the hermetic casing communicate with the path control channel; and first and second inlet channels provided at predetermined positions of the housing, with interiors of the first and second compression chambers communicating with the path control channel through the first and second inlet channels, respectively.