Patent ID: 6619430
Filing Date: 2003-09-16
Classification: F04C,F16N

Abstract:
A lubrication system for a screw compressor having a plurality of rotors with each of said rotors having an inlet end supported by a bearing comprising:means for providing lubricant at a pressure greater than suction pressure to each of said bearings; at least one region at suction pressure associated with each of said bearings; means for providing buffer gas at a pressure greater than suction pressure between each of said bearings and said at least one region at suction pressure associated with each of said bearings; means at suction pressure located between each of said bearings and said means for providing buffer gas associated with each bearing for draining lubricant and buffer gas; means for providing a seal between each one of said means at suction pressure and a corresponding means for providing buffer gas; and means for providing a seal between each of said regions at suction pressure associated with said bearings and a corresponding means for providing buffer gas.