Refrigerant cycle apparatus

A refrigerant cycle apparatus capable of smoothly cooling an inverter module (55) for driving a motor (24) of an electric compressor while preventing enlargement of an installation space as much as possible. In the refrigerant cycle apparatus which is constituted by sequentially connecting the electric compressor (11), a gas cooler (12), an electric expansion valve (4), an evaporator (15) and an accumulator (17) in an annular form through pipes, and driving a motor of the electric compressor by the inverter module (55), the gist of the apparatus is that heat exchange is carried out between the accumulator and the inverter module.