Abstract: A variable capacity rotary compressor is designed to make a pressure of a high-pressure side be uniformly applied to upper and lower ends of a roller of a low-pressure side, allowing the roller of the low-pressure side to be smoothly rotated. The compressor includes a housing to define two compression chambers which are partitioned by a partition plate. Two flanges are mounted to predetermined positions of the compression chambers to close openings of the compression chambers. A rotating shaft passes through the compression chambers and the partition plate. Two eccentric units are mounted to the rotating shaft to be placed in the compression chambers. One of the eccentric units is eccentric from the rotating shaft to execute a compression operation while a remaining one of the eccentric units is released from eccentricity from the rotating shaft to execute an idle rotation, according to a rotating direction of the rotating shaft.

Abstract: A variable capacity rotary compressor, which is designed to make an internal pressure of a compression chamber, where an idle rotation is executed, be equal to an outlet side pressure of the rotary compressor, thus minimizing a rotating resistance. The compressor includes a housing partitioned into two compression chambers having different capacities by a partition plate. A rotating shaft rotates in the compression chambers. Two eccentric units are mounted to the rotating shaft to be placed in the compression chambers, and execute a compression rotation and an idle rotation according to a rotating direction of the rotating shaft. A pressure control unit functions to apply the pressure of the outlet side of the compressor to the compression chamber which executes the idle rotation. The pressure control unit includes a path control channel which is vertically provided through the partition plate to be placed at a position outside the compression chambers.

Abstract: A variable capacity rotary compressor capable of varying a compression capacity thereof. The variable capacity rotary compressor includes a housing defined therein with first and second compressing chambers having different volumes, a rotating shaft adapted to rotate in the first and second compressing chambers, a compressing unit arranged in the first and second compressing chambers, and adapted to perform a compression operation in a selected one of the first and second compressing chambers in accordance with a change of a rotating direction of the rotating shaft, and a drive motor adapted to rotate the rotating shaft in a first direction or in a second direction, the drive motor being variable in rotating speed in accordance with an electrical control operation.

Abstract: A variable capacity rotary compressor, which precisely controls variation of a compression capability into a desired discharge pressure, and which minimizes a resistance to rotation of a rotating shaft, and thus improves the capacity of the rotary compressor.

Abstract: A rotary compressor for which a refrigerant compression capacity is varied between plural stages is provided. The rotary compressor has a rotating shaft, a reversible motor to rotate the rotating shaft in a first or a second direction, first and second compression chambers in which a refrigerant compression stroke and an idle stroke are alternately performed in accordance with a rotating direction of the rotating shaft, a first sub-path allowing a predetermined point of the first compression chamber to communicate with a refrigerant intake side of the first compression chamber to control a compression capacity of the first compression chamber, a second sub-path allowing a predetermined point of the second compression chamber to communicate with a refrigerant intake side of the second compression chamber to control a compression capacity of the second compression chamber, and a path control unit to control opening ratios of the first and second sub-paths.

Abstract: A variable capacity rotary compressor including a housing, the housing including two compression chambers, the two compression chambers having different capacities; a rotating shaft rotatably provided in the two compression chambers; two eccentric units respectively provided in the compression chambers in such a way as to be fitted over the rotating shaft, the two eccentric units being operated so that one of the two eccentric units is positioned eccentrically from the rotating shaft to perform a compression operation while the other eccentric unit is positioned concentrically with the rotating shaft to perform an idle operation, according to a rotating direction of the rotating shaft; roller pistons fitted over each of the two eccentric units; vanes installed in each of the two compression chambers so as to reciprocate in a radial direction while being in contact with an outer surface of the roller piston; and a path control unit to control a refrigerant suction path so that a refrigeran is provided to an in

Abstract: An absorption cooling system includes an evaporator which receives liquid refrigerant from a condenser and evaporates that refrigerant to produce a cooling effect. The gaseous refrigerant produced by evaporation in the evaporator is supplied to an absorber which mixes that gaseous refrigerant with concentrated liquid refrigerant received from a generator to produce a dilute refrigerant solution. The dilute refrigerant solution is delivered from the absorber to the generator and is separated into a gaseous refrigerant and a concentrated liquid refrigerant. The gaseous refrigerant from the generator is passed through a heat exchanger and transfers heat to the cooler dilute refrigerant traveling from the absorber to the generator. Some of the gaseous refrigerant is condensed in the heat exchanger and is supplied to the evaporator, while the remaining uncondensed refrigerant is supplied to the condenser.