Helium compressor system with unmodified scroll compressor

A helium compressor system using an unmodified scroll compressor designed for air conditioning or food storage service, comprising:

• a compressor having a housing, comprising:
• a scroll including an orbiting scroll and a stationary scroll, wherein the stationary scroll has one or more injection ports;
• a discharge port in the housing, through which a mixture of helium at high pressure and oil is discharged;
• at least one return port in the housing, which receives helium at low pressure;
• an injection port in the housing, which is connected to the one or more injection ports of the stationary scroll;
• a motor that has a drive shaft that drives the orbiting scroll;
• and
• a compressor oil sump located in a bottom of the housing;
• and
• an oil management system comprising:
• an oil separator receiving the mixture of the helium at high pressure and the oil from the discharge port;
• a first line bringing a first fraction of the oil from the oil separator to the one or more injection ports of the stationary scroll through the injection port of the housing;
• one or more return lines bringing a second fraction of the oil to the at least one return port along with the helium at low pressure;
• and
• an adsorber that retains a third fraction of the oil.