SCREW COMPRESSOR
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United States of America Patent
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-
Jan 14, 2003
Grant Date -
Jan 30, 2003
app pub date -
Nov 30, 2001
filing date -
Jul 30, 2001
priority date (Note) -
Granted
status (Latency Note)
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Abstract
The screw compressor according to the invention is provided with a main casing 1 having male and female rotors 6, a discharge casing 3 having a discharge passage 15 for compressed gas discharged from the rotors, and an oil reservoir 19 for accumulating oil separated from the compressed gas. The discharge casing is provided with a cylindrical oil separating space section 4 formed therein so as to communicate with the discharge passage, which discharge passage is connected in a tangential direction of the oil separating space section. Further, a discharge port 14 is provided so as to communicate with the oil separating space section, and a cylindrical member 5 is further provided in the oil separating space section so as to be concentric therewith. The oil separating space section and the oil reservoir are connected to each other through a communication passage having a cross-sectional area smaller than that of the oil separating space section.
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