OIL COOLING TYPE SCREW COMPRESSOR

摘要

PROBLEM TO BE SOLVED: To provide an oil cooling type screw compressor capable of reducing delivery noise and improving an oil separating efficiency. SOLUTION: This compressor comprises an external casing 21 surrounding a bearing part on a delivery port 12 side of a compressor main body 1 in the state of being isolated from a suction port 11; an oil separation element 22 comprising an inside portion 22A and an outside portion 22B partitioned by an annular partition plate 26 and dividing space into a space 27 on a compressor main body side and a space 28 on the side opposite to the compressor main body side; a first delivery pipe 23 leading compressed gas delivered together with oil from the delivery port 12 to the inside portion 22A; an isolating plate 24 isolating the inside portion 22A from the space 27 on the compressor main body side; an face plate 32 having an opening part 31 and partially closing the end face of the side opposite to the compressor main body side; and a second delivery pipe 25 passing through a portion of the external casing 21 covering the oil separation element 22 and the space 28 on the side opposite to the compressor main body side to lead compressed gas flown from the space 28 to the space 27 to the outside.