Regenerative turbine having predetermined clearance relationship between channel ring and impeller
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United States of America Patent
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-
Jun 1, 1993
Grant Date -
N/A
app pub date -
Jan 10, 1992
filing date -
Jan 10, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A regenerative turbine pump apparatus which includes a housing having an inlet and an outlet and an impeller mounted for rotation within the housing. The impeller has an outer diameter and a channel ring is disposed around the impeller. The channel ring has a first arcuate portion that has a first radius to provide a substantially uniform first clearance with respect to the outer diameter of the impeller and the first arcuate portion extends throughout a major part of the channel ring. The channel ring includes a second arcuate portion proximate to the inlet having a second clearance with respect to the outer diameter of the impeller that is greater than the first clearance.
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