Profiles of screw-type rotors for rotary machines conveying a gaseous fluid
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United States of America Patent
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Mar 26, 1991
Grant Date -
N/A
app pub date -
Nov 1, 1988
filing date -
Jan 6, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides an improved rotary machine of the type having male and female rotors with complementary intermeshing helical teeth. The improvement relates to the profile of the teeth, particularly the teeth of the male rotor, so that there is a reduction of the phenomenon of wedging of the sealing, lubricating or cooling liquid molecules and a reduction of the wedging of the molecules of gaseous fluid between the bores and apices of the teeth. The improved profile of the teeth and the resulting reduction of the wedging phenomenon prevents a loss of power which is typical in the prior art screw-type rotary machines.
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