Heat flow management device and method for operating a heat flow management device

Abstract

Heat flow management device (1) for motor vehicles, comprising a refrigerant circuit, a drive train coolant circuit and a heating train heat transfer medium circuit, wherein - the refrigerant circuit comprises a compressor (2), an indirect condenser (3), an expansion device (4), an ambient heat exchanger (5), at least one evaporator (10, 11) with an associated expansion device (7, 8) and a chiller (12) with an associated expansion device (9), - the drive train coolant circuit comprises a coolant pump (22), the chiller (12), an electric motor heat exchanger (29) and a drive train coolant radiator (32), - the heating line heat transfer circuit comprises a coolant pump (17), the indirect condenser (3) and a heating heat exchanger (19), - wherein the refrigerant circuit and the drive train coolant circuit are thermally coupled to one another directly via the chiller (12) and - wherein the refrigerant circuit and the heating line heat transfer circuit are thermally coupled to each other directly via the indirect condenser (3) - and the drive train coolant circuit and the heating train heat transfer circuit are only indirectly thermally coupled via the refrigerant circuit, - wherein a bypass (21) is arranged in the drive train coolant circuit parallel to the drive train coolant radiator (32).

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