Patent ID: 11867443
Assignee: nan
Field: Transport (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 0:
1. A thermal management device comprising an indirect air-conditioning circuit for a motor vehicle, comprising:
a first loop for refrigerant fluid in which there circulates a refrigerant fluid, said first loop for refrigerant fluid comprising, in the direction of circulation of the refrigerant fluid, a compressor, a two-fluid heat exchanger, a first expansion device, a first heat exchanger arranged within a first heating, ventilation and air-conditioning device and through which there is configured to pass a first flow of air internal to the motor vehicle, a second expansion device, a second heat exchanger through which there is configured to pass a flow of air external to the motor vehicle;
a first bypass pipe connecting a first connection point arranged downstream of the first heat exchanger, between said first heat exchanger and the second heat exchanger, to a second connection point arranged downstream of the second heat exchanger, between said second heat exchanger and the compressor,
said first bypass pipe comprising a first shut-off valve;
a first internal heat exchanger, allowing an exchange of heat between the high-pressure refrigerant fluid leaving the two-fluid heat exchanger and the low-pressure refrigerant fluid leaving the second heat exchanger or leaving the first bypass pipe;
a second internal heat exchanger allowing an exchange of heat between the high-pressure refrigerant fluid leaving the first internal heat exchanger and the low-pressure refrigerant fluid circulating in the first bypass pipe;
a second bypass pipe connecting a third connection point arranged upstream of the first expansion device, between the compressor and said first expansion device, to a fourth connection point arranged on the first bypass pipe or upstream of the first internal heat exchanger, between the second connection point and said first internal heat exchanger, said second bypass pipe comprising a third expansion device arranged upstream of a first cooler;
a third bypass pipe, bypassing the first heat exchanger, said third bypass pipe comprising a first additional heat exchanger arranged in a second heating, ventilation and air-conditioning device; and
a second loop for heat-transfer fluid in which a heat-transfer fluid circulates,
the two-fluid heat exchanger being arranged jointly on the first loop for refrigerant fluid downstream of the compressor, between said compressor and the first expansion device, and on the second loop for heat-transfer fluid.