Patent ID: 11933529
Assignee: VALEO SYSTEMES THERMIQUES
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 0:
1. A method for controlling a thermal management device of a motor vehicle, said thermal management device having a refrigerant fluid circuit in which a first heat transfer fluid is configured to circulate and being configured to operate in a heat pump mode, said refrigerant fluid circuit having, in the direction of circulation of the refrigerant fluid in heat pump mode:
a compressor, a first heat exchanger configured to exchange heat energy directly or indirectly with an internal air flow, an expansion device, a second heat exchanger configured to have an external air flow pass through, and
an electric heating device configured to directly or indirectly heat the internal air flow,
said control method involving, during a cold start of the thermal management device:
direct or indirect heating of the internal air flow only by the electric heating device until said internal air flow reaches a target temperature below a comfort temperature determined in relation to a request from a user, and/or until the expiration of a predetermined timer; and
in response to the internal air flow reaching the target temperature and/or the time expiring, starting up the compressor so that the refrigerant fluid circuit draws off heat energy from the external air flow at the second heat exchanger and releases said heat energy at the first heat exchanger so that the internal air flow reaches the comfort temperature.