SCREW-TYPE OIL-FILLED COMPRESSOR UNIT Russian patent published in 2012 - IPC F04C18/16 F04C29/02 

FIELD: machine building.

SUBSTANCE: proposed compressor unit comprises compressor 1 with drive 7 and driven rotors running in bearings 9 and 10 to make working chamber in rotation, two-circuit lubing system comprising first oil feed circuit to feed oil to compressor chamber with oil separator 18 and oil cooler 22, and second circuit to feed oil to bearings 9 and 10 with oil tank 32 and oil cooler 38. First circuit incorporates system to maintain optimum gas temperature in oil separator 18 including gas temperature gage 30 connected with oil separator 32 to control coolant flow rate while second circuit incorporates system to maintain optimum oil temperature in oil feed pipeline feeding oil to bearing 9 and 10 and including oil temperature gage 45 and communicated with second circuit oil cooler 38 to control coolant flow rate.

EFFECT: higher reliability in compressing dirty and aggressive components and operation in severe operating and climatic conditions.

5 cl, 3 dwg