Patent ID: 6640889
Filing Date: 2003-11-04
Classification: B60H

Abstract:
A heating and cooling system for a vehicle having an engine and a passenger compartment, the heating and cooling system comprising:a first coolant loop having a coolant outlet line and a coolant inlet line adapted to couple to the engine, a heater core, a first heat exchanger, and a coolant valve for selectively directing flow of a coolant from the coolant outlet line to the coolant inlet line through one of the heater core and the first heat exchanger; a second coolant loop having a pump for selectively circulating the coolant through a first coolant/refrigerant heat exchanger, the heater core, and back to the pump; and a refrigerant loop having a compressor with an inlet and an outlet, a first refrigerant valve for selectively directing the flow of a refrigerant from the compressor outlet to one of a condenser and the first coolant/refrigerant heat exchanger, a refrigerant passage for directing the flow of the refrigerant through an evaporator, and a refrigerant line for returning the refrigerant to the compressor inlet.