초록 ▼

A refrigeration system having a modulatable compressor and a Rankine cycle refrigeration circuit having at least two evaporators. The flow rate of the compressor is modulated in response to the sensed temperature of the masses being cooled, and the control circuit switches valves to control the refr

A refrigeration system having a modulatable compressor and a Rankine cycle refrigeration circuit having at least two evaporators. The flow rate of the compressor is modulated in response to the sensed temperature of the masses being cooled, and the control circuit switches valves to control the refrigerant flow path and modulates the flow rate of the compressor to optimize the efficiency of the refrigeration system.

대표청구항 ▼

[ We claim:] [2.] A heat pumping apparatus for lifting heat from at least two lower temperature masses, one of which is lower than the other, to a higher temperature mass, the apparatus including a vapor compression cycle refrigeration circuit including a refrigerant contained in the circuit, the ap

[ We claim:] [2.] A heat pumping apparatus for lifting heat from at least two lower temperature masses, one of which is lower than the other, to a higher temperature mass, the apparatus including a vapor compression cycle refrigeration circuit including a refrigerant contained in the circuit, the apparatus comprising:(a) a compressor/drive motor combination having a modulatable flow rate and having a refrigerant input and a refrigerant output in fluid communication in the refrigeration circuit;(b) at least two evaporators, a first one of the evaporators in thermal connection to a first, lowest temperature mass and the second of the evaporators in thermal connection to a second, lower temperature mass having a temperature interposed between the temperature of the lowest temperature mass and the higher temperature mass, the first evaporator having an input connectible through a valve to receive refrigerant compressed by the compressor and an output connected to an input of the second evaporator, the second evaporator having an input connectible through a valve to receive refrigerant compressed by the compressor and an output connected to return refrigerant to the compressor for at times directing the refrigerant in series through both the first and the second evaporators and at times directing the refrigerant through only the second evaporator and blocking refrigerant flow through the first evaporator; and(c) a control circuit including sensors for sensing the temperature of the masses and connected to the compressor/drive motor combination for modulating the flow rate in response to the sensed temperatures.