Patent ID: 7080520

Claim:
A climate control system for a vehicle that is driven by an internal combustion engine ( 10 ), having a heating heat exchanger ( 24 ) which is connected to a coolant loop ( 12 ) of the engine ( 10 ) and is preceded upstream of a blower ( 48 ) by an evaporator ( 44 ), and a compressor ( 50 ) in a refrigerant loop ( 40 ), during a cooling mode, pumps a refrigerant via a gas cooler ( 42 ) and via an expansion valve ( 54 ) to the evaporator ( 44 ) and during a heating mode pumps it to the evaporator bypassing the gas cooler ( 42 ), and between the coolant loop ( 12 ) and the refrigerator loop ( 40 ) a coupling heat exchanger ( 38 ) is provided, characterized in that the coupling heat exchanger ( 38 ) is disposed upstream of the gas cooler ( 42 ) on the side of the refrigerant loop ( 40 ) on the compression side of the compressor ( 50 ); that a bypass line ( 60 ) is connected parallel to the gas cooler ( 42 ), and the flow through the gas cooler ( 42 ) and the bypass line ( 60 ) is controlled as a function of operating parameters via a switching valve ( 62 ) in the bypass line ( 60 ) and one switching valve ( 64 , 66 ) each at the inlet and outlet, respectively, of the gas cooler ( 42 ); and that in the heating mode, the evaporator ( 44 ) serves as a heat source.