Patent ID: 6862892
Filing Date: 2005-03-08
Classification: B60H,F25B

Abstract:
1. A heating and cooling system for a vehicle having an engine and a passenger compartment, the heating and cooling system comprising: at least one coolant loop having a coolant outlet line and a coolant inlet line adapted to operatively engage the engine, a heater core, a first coolant/refrigerant heat exchanger, a second coolant/refrigerant heat exchanger, and at least one coolant valve for selectively directing flow of a coolant from the coolant outlet line to the coolant inlet line through at least one of the heater core, the first coolant/refrigerant heat exchanger, and the second coolant/refrigerant heat exchanger; a pump operatively engaging the at least one coolant loop; 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 second coolant/refrigerant heat exchanger, a first refrigerant passage connected to the condenser for directing the flow of the refrigerant from the condenser, through a first expansion device and to an evaporator, and a second refrigerant line connected to the second coolant/refrigerant heat exchanger for directing the flow of the refrigerant from the second coolant/refrigerant heat exchanger, through a second expansion device and to the first coolant/refrigerant heat exchanger.