Two stage compressor and a method for cooling such a compressor
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United States of America Patent
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-
Jan 14, 2003
Grant Date -
N/A
app pub date -
Nov 9, 2000
filing date -
Jun 17, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A helical screw compressor is provided having a first compressor stage and a second compressor stage. The helical screw compressor includes a first male rotor and a first female rotor in the first compressor stage, and a second male rotor and a second female rotor in the second compressor stage. A connecting duct is provided between an outlet of the first compressor stage and an inlet of the second compressor stage, and a conduit is provided having a first end communicating with the connecting duct and a second end branching off into a first line and a second line. The first line is coupled to the first compressor stage for injecting liquid into the first compressor stage, and the second line is coupled to the second compressor stage for injecting liquid into the second compressor stage. In addition, a pump is provided in the conduit for transporting liquid precipitate from the connecting duct to the first and second compressor stages, and a heat exchanger is provided in the conduit between the pump and the first and second lines.
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