Positive displacement machine based on the spiral principle

A positive displacement machine according to the spiral principle, comprising a compressor section and a motor section, wherein, in the compressor section, an orbiting displacement spiral and a counter spiral are arranged that engage into one another in such a way that variable compression chambers are formed between the displacement spiral and the counter spiral in order to receive and compress a working medium flowing through a working medium circuit, wherein an electric motor is arranged in the motor section which is drive-connected to the displacement spiral and wherein a cooling device is provided for cooling the electric motor, wherein the cooling device is independent of the working medium circuit, wherein the cooling device comprises a cooling medium circuit, wherein an inverter is provided for electrical control of the electric motor, and wherein the cooling medium circuit is thermally coupled to the inverter.