Carrier Corporation

Alexander D Leyderman

Donald Yannascoli

Martin M Mertell

James William Bush

Ralph James Carl, Jr

Jeongkwan Lee

Geoffrey Reynolds Harmon

Donald Yasnnascoli

Donald Yannnascoli

Andrew Bascom McCandless

Graham Walker Lewis

Jiawei Lu

A refrigeration system includes a compressor having a hermetically sealed housing and a compression mechanism which is positioned inside the housing; a condenser which is fluidly connected to the compressor; an evaporator which is fluidly connected between the condenser and the compressor; a magnetic coupling having a drive coupling half positioned outside the housing and a driven coupling half positioned inside the housing and separated from the drive coupling half by a separation wall portion of the housing; and a fluid conduit for communicating a portion of liquid refrigerant from the condenser to an inside surface of the separation wall portion. During operation, the liquid refrigerant from the condenser is evaporated on or adjacent the inside surface of the separation wall portion to thereby dissipate heat generated by magnetically induced eddy currents in the separation wall portion.

Refrigeration system having a compressor driven by a magnetic coupling

In a high side, vertical, twin cylinder rolling piston hermetic compressor, a portion of the high pressure gas is diverted from the chamber defined by the lower muffler and the pump bearing to the axial bore of the crankshaft. The crankshaft extends into the oil sump such that rotation of the shaft produces a pumping action for pumping oil from the sump to structure requiring lubrication. Additionally, the flow diverted from the chamber to the axial bore produces a jet pump effect which supplements the pumping action produced by the rotating shaft, particularly at low speed.

Rotary compressor having oil pumped through a vertical drive shaft

In a high side rotary compressor, interior shell pressure is used to force lubricant from the sump into the compression chamber. The lubricant is delivered only after the suction port has closed and before chamber pressure exceeds shell pressure.

Rotary compressor with oil injection

In a high side rotary compressor, liquid refrigerant is supplied to is to the compression chamber via a capillary tube and liquid injection port. The lubricant is delivered only after the suction port has closed and before chamber pressure exceeds the liquid injection supply pressure.

Rotary compressor with liquid injection

The profile of the valve stop of a discharge valve conforms to the maximum bending stress or the maximum allowable fatigue stress whereby impact of the valve element with the valve stop occurs when the valve element has the least kinetic energy and highest potential energy such that the least possible kinetic energy is transferred to the valve stop.

Virtual valve stop

In a horizontal rotary compressor the gas path from the muffler is between the rotor and stator whereupon the flow direction is changed 180.degree. and the flow takes place between the stator and the upper shell. Oil drainage to the sump is in a flow path between the stator and the lower shell. The gas and oil paths serve to cool the rotor and the stator windings. Also, the gas flow reduces oil circulation from the compressor.

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Manlius, NY, United States of America

Alexander D Leyderman