Patent ID: 11867435
Assignee: VALEO SYSTEMES THERMIQUES
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 0:
1. A reversible thermal management device for a motor vehicle, said thermal management device, comprising:
a refrigerant fluid circuit in which a refrigerant fluid circulates, the circuit comprising:
a main loop successively comprising a compressor, an internal condenser, a first expansion device and an external evaporator/condenser,
a first bypass branch connecting a first connection point arranged on the main loop upstream of the first expansion device, between said first expansion device and the internal condenser, to a second connection point arranged on the main loop upstream of the external evaporator/condenser, between said external evaporator/condenser and the first expansion device,
a second bypass branch connecting a third connection point arranged on the main loop downstream of the external evaporator/condenser, between said external evaporator/condenser and the compressor, to a fourth connection point arranged on the main loop upstream of the first expansion device, between said first expansion device and the first connection point,
a third bypass branch connecting a fifth connection point arranged on the main loop downstream of the first expansion device, between said first expansion device and the second connection point, to a sixth connection point arranged on the main loop upstream of the compressor, between said compressor and the third connection point, said third bypass branch comprising at least one heat exchanger,
a device for redirecting the refrigerant fluid coming from the internal condenser towards the first expansion device or towards the first bypass branch,
a stop valve for the refrigerant fluid, arranged on the main loop between the third and the sixth connection points,
a first check valve arranged on the second bypass branch so as to block the refrigerant fluid coming from the internal condenser,
a second check valve arranged on the main loop between the second and the fifth connection points, so as to block the refrigerant fluid coming from the evaporator/condenser,
a device for redirecting the refrigerant fluid coming from the first expansion device towards the at least one heat exchanger of the third bypass branch or towards the evaporator/condenser.