초록 ▼

The compressor (3) of the refrigerating fluid circuit is driven by the thermal engine (1) of the vehicle when the latter is functioning and, when parked, by the alternator (2). The latter, fed with three-phase current from an auxiliary battery (10) so as to function as a motor, and the compressor (3

The compressor (3) of the refrigerating fluid circuit is driven by the thermal engine (1) of the vehicle when the latter is functioning and, when parked, by the alternator (2). The latter, fed with three-phase current from an auxiliary battery (10) so as to function as a motor, and the compressor (3), are then disconnected from the crankshaft (20) by a free-wheel mechanism (7). The preliminary air conditioning of the vehicle when parked is thus provided without a special electric motor for driving the compressor, with reduced expenditure of energy by virtue of the feeding of the alternator with three-phase current, and without any risk of exhaustion of the main battery by virtue of the auxiliary battery (10).

대표청구항 ▼

[ What is claimed is:] [1.] An air conditioning device for the passenger compartment of a motor vehicle having a main drive engine, means for conveying an air flow into the compartment, and a compressor suitable for circulating a refrigerating fluid in a circuit having an evaporator for transferring

[ What is claimed is:] [1.] An air conditioning device for the passenger compartment of a motor vehicle having a main drive engine, means for conveying an air flow into the compartment, and a compressor suitable for circulating a refrigerating fluid in a circuit having an evaporator for transferring heat from the air flow to the refrigerating fluid, means being provided to rotate the compressor when the main drive engine of the vehicle is working and also when the vehicle is parked, an alternator driven by the main engine to produce electricity, the compressor being driven by the main engine when the main engine is working wherein the invention is characterized by the alternator comprising an electric motor when the vehicle is parked and at least one auxiliary battery in the motor vehicle for supplying electricity to said electric motor.