System and method for cooling a compressor motor

A gas compression system comprising:

• a compressor having a compressing mechanism;
• a motor connected to the compressor to drive the compressing mechanism;
• a housing enclosing the compressor and the motor;
• and
• a suction assembly for receiving uncompressed gas from a gas source and conveying the uncompressed gas to the compressor, the suction assembly comprising:
• a suction pipe in fluid communication with the gas source and having an outlet;
• means for creating a pressure reduction in the uncompressed gas from the gas source, the means for creating the pressure reduction being in the suction pipe at the suction pipe outlet;
• a compressor inlet configured to receive uncompressed gas from the suction pipe outlet and to provide the uncompressed gas to the compressor;
• the housing having an inlet opening in fluid communication with the gas source and an outlet opening;
• a conduit connected to the outlet opening of the housing and in fluid communication with the suction pipe, gas being drawn through the housing to cool the motor and returned through the conduit to the suction pipe by the means for creating the pressure reduction;
• and
• wherein the means for creating the pressure reduction in the suction pipe at the suction pipe outlet comprises a nozzle having a sidewall, the sidewall comprising a converging portion, being in fluid communication with the compressor inlet.