Patent ID: 11912100
Assignee: VALEO SYSTEMES THERMIQUES
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A thermal conditioning circuit for a hybrid or electric motor vehicle, in which a refrigerant is able to circulate, said circuit comprising:
a compressor;
a condenser;
an evaporator-condenser;
an evaporator; and
a heat exchanger thermally coupled to an electric member,
wherein the circuit is configured to operate at least in the following three modes, in which the refrigerant is able to circulate in series and successively:
a first mode in which the refrigerant circulates through the condenser, then through the evaporator-condenser, and then through the evaporator,
a second mode in which the refrigerant circulates through the condenser, then through the evaporator, and then through the evaporator-condenser, and
a third mode, in which the evaporator is arranged in parallel with the heat exchanger and/or the evaporator-condenser, and in which the refrigerant circulates in series and successively through the condenser and then through at least two of evaporator, heat exchanger and the evaporator condenser arranged in parallel, and

wherein the circuit further comprises:
a first branch comprising the compressor and the condenser downstream of the compressor, a first valve and a reservoir, the reservoir being arranged upstream of the compressor and the valve being arranged upstream of the reservoir,
a second branch comprising a second valve, the evaporator and the heat exchanger, and
a third branch comprising the evaporator-condenser, said first, second and third branches being connected in parallel with one another,
a fourth branch which connects the second branch to the third branch, the connection being made on the second branch upstream of the first and second expansion valves and the second valve of the second branch, the connection being made on the third branch between the bidirectional expansion valve and the evaporator-condenser, and
a fifth branch which connects the third branch to the first branch, the connection on the third branch being made between the third expansion valve and the evaporator-condenser, the connection on the first branch being made between the reservoir and the first valve of the first branch.