Mixed flow liquid ring pumps
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United States of America Patent
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Oct 5, 1999
Grant Date -
N/A
app pub date -
Jul 3, 1997
filing date -
Jul 3, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A conically ported liquid ring pump has one or more port structures with cone angles in the range from 15 degrees to 75 degrees. These cone angles are substantially greater than previously used cone angles (most commonly about 8 degrees). The large cone angles of this invention give the fluid flowing between the cone and the rotor significant components of both radial and axial velocity. Large cone angles also allow the port structure(s) to be made axially shorter, which has a number of important advantages such as shortening the unsupported length of the rotor shaft. These attributes of the present pumps are helpful for such purposes as allowing the length-to-diameter ratios of the pumps to be economically increased. In addition, the pumps of this invention retain many of the desirable attributes of conically ported pumps.
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