Electrical refrigerant compressor

A refrigerant compressor comprising:

• a drive unit;
• and
• a compressor unit coupled to the drive unit, wherein the drive unit has a motor housing through which a refrigerant can flow and which accommodates an electric motor with a rotatable shaft, wherein the compressor unit accommodates a scroll compressor which can be driven by the shaft, wherein the motor housing comprises a housing wall which is exposed to sucked-in refrigerant and an inverter unit which is joined thereto and accommodates an inverter circuit board, forming a fluid-tight inverter housing, wherein the inverter circuit board has a component arrangement which is formed with heat-producing electronic components including at least one DC link capacitor and multiple electronic power switches, and has at least two different component heights perpendicular to the inverter circuit board and is accommodated in multiple mouldings, which are formed according to the component heights, on the refrigerant-exposed housing wall and is thermally coupled to the mouldings, wherein the motor housing has a tangential refrigerant inlet configured to initially direct refrigerant along a refrigerant flow path extending around a circumference of the refrigerant-exposed housing wall within the motor housing, wherein the multiple electronic power switches are arranged in a semicircular or circular arrangement along the circumference of the refrigerant-exposed housing wall corresponding to the refrigerant flow path, wherein the at least one DC link capacitor is positioned radially inwardly of the semicircular or circular arrangement of the electronic power switches in a central region of the refrigerant-exposed housing wall, and wherein the refrigerant flow path extends along the electronic power switches prior to reaching the at least one DC link capacitor.