Screw compressor in which the trailing flanks of the lobes of at least one rotor body are beveled at an end surface of the rotor body near the outlet port
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United States of America Patent
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-
Jun 19, 2007
Grant Date -
Apr 27, 2006
app pub date -
Jul 11, 2003
filing date -
Aug 14, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A helical screw rotor compressor is provided which includes a rotor housing that includes a barrel wall between two parallel end walls, an inlet port at a first end and an outlet port at a second end. The compressor has an internal shape corresponding to two parallel and mutually intersecting cylinders. The compressor includes two rotors which each include a shaft and a rotor body surrounding the shaft. The rotor bodies have parallel end surfaces adjacent to the end walls of the rotor housing, and each include helical lobes that have a crown, a first or leading flank surface on a first side of the crown and a second or trailing flank surface on a second side of the crown. The second or trailing flank surfaces of the lobes have a beveled or chamfered region adjacent to the end surface of the rotor body near the outlet port.
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