Patent ID: 7257958

Claim:
An apparatus comprising: a compressor having an inlet and an outlet and at least a first port between the inlet and outlet; a condenser having an inlet coupled to the compressor outlet to receive refrigerant and having an outlet; a first evaporator having an inlet coupled to the condenser to receive refrigerant and having an outlet coupled to the compressor inlet; a second evaporator having an inlet coupled to the condenser to receive refrigerant and having an outlet coupled to the compressor first port to return refrigerant to the compressor, bypassing a compression path between the compressor inlet and first port; a first heat exchanger exchanging heat from refrigerant discharged by the condenser to refrigerant discharged by the first evaporator; and a second heat exchanger exchanging heat from refrigerant discharged by the condenser to refrigerant discharged by the second evaporator, a donor conduit of the first heat exchanger being downstream of a donor conduit of the second heat exchanger along a refrigerant flowpath portion extending downstream from the condenser.