Refrigerant circuit with two parallel flow-through evaporators in an air conditioning unit, motor vehicle and method for operating a refrigerant circuit

Abstract

The invention relates to a refrigerant circuit (10) for a motor vehicle, comprising a compressor (14) which, in cooling operation, supplies compressed refrigerant to a refrigerant cooler (16), an expansion device (28) for expanding the refrigerant, and a first evaporator (30) to which expanded refrigerant can be supplied. The first evaporator (30) is arranged in an air conditioning unit (32) of the refrigerant circuit (10) and is configured to cool an airflow (34) that can be introduced into a passenger compartment of the motor vehicle during cooling operation. The air conditioning unit (32) is permeable to the airflow (34) to be cooled. A heat exchanger (60), distinct from the first evaporator (30), is arranged in the air conditioning unit (32) and can be operated as a further evaporator during cooling operation.In cooling mode, the first evaporator (30) can be supplied with a first partial flow of the expanded refrigerant, and the second evaporator with a second partial flow of the expanded refrigerant. Furthermore, the invention relates to a motor vehicle and a method for operating the refrigerant circuit (10).

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