Patent ID: 8312731

Claim:
A refrigeration apparatus, comprising: an outdoor unit including at least a first compressor and a second compressor, which are connected in parallel with each other, wherein the first compressor is a variable-speed compressor in which a rotational speed is variable due to inverter control, and the second compressor is a constant-speed compressor in which a rotational speed is constant, a first oil separator attached to the first compressor and connected to a suction pipe of the second compressor via a first oil return piping including a pressure reducing means, a second oil separator attached to the second compressor and connected to a suction pipe of the first compressor via a second oil return piping including a pressure reducing means, the suction pipes of the first and second compressors being connected together, and a solenoid valve that selectively forms a bypass circuit with respect to the pressure reducing means, connected in parallel with the pressure reducing means of the first oil return piping, said solenoid valve being opened when the first compressor is restarted.