Vehicle air-conditioning device including a multi-purpose heat exchanger
First Claim
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1. A device for air-conditioning the passenger compartment of a motor vehicle, comprising:
- a refrigerant-fluid circuit including a compressor, a condenser serving as a heat sink and a first evaporator serving as a cold source, the device further including a heating radiator and a second evaporator and switching means for selectively routing fluid flow between one of and both the first and second evaporators depending on a required cooling power for selectively causing the second evaporator to function as one of another cold source and a heat source, the first and second evaporators being traversed one after the other at least partly by an airflow to be cooled;
wherein said heating radiator and said second evaporator form a compound heat exchanger comprising two fluid chambers arranged on either side of a bank of tubes;
and wherein the switching means include means provided for selectively establishing an additional heating loop, the additional heating loop includes the second evaporator and does not include the condenser nor the first evaporator, the second evaporator is provided to serve as the heat source if the additional heating loop is established.
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Abstract
A refrigerant-fluid circuit has a compressor, a condenser serving as heat sink and a first evaporator serving as cold source. The circuit also has a second evaporator and the refrigerant fluid is made to flow either only in the first evaporator, or in the two evaporators, depending on the cooling power required.
33 Citations
9 Claims
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1. A device for air-conditioning the passenger compartment of a motor vehicle, comprising:
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a refrigerant-fluid circuit including a compressor, a condenser serving as a heat sink and a first evaporator serving as a cold source, the device further including a heating radiator and a second evaporator and switching means for selectively routing fluid flow between one of and both the first and second evaporators depending on a required cooling power for selectively causing the second evaporator to function as one of another cold source and a heat source, the first and second evaporators being traversed one after the other at least partly by an airflow to be cooled;
wherein said heating radiator and said second evaporator form a compound heat exchanger comprising two fluid chambers arranged on either side of a bank of tubes;
and wherein the switching means include means provided for selectively establishing an additional heating loop, the additional heating loop includes the second evaporator and does not include the condenser nor the first evaporator, the second evaporator is provided to serve as the heat source if the additional heating loop is established. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification