CENTRIFUGAL IMPELLER
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United States of America Patent
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Issued Date -
May 23, 2013
app pub date -
Nov 18, 2011
filing date -
Nov 18, 2011
priority date (Note) -
Abandoned
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Abstract
A centrifugal impeller includes a hub and a plurality of impeller blades extending from the hub. Each impeller blade extends over a chord length between a leading end and a trailing end, over a span from a root at the hub to a tip end and over a thickness between a convex side and a concave side. The blades collectively or individually have profiles that define a circumferential pitch (CP) with regard to a spacing distance between the leading ends of neighboring ones of the blades and blade angles at positions along the convex side of each blade between the leading end and the trailing end. The blades have a solidity value (S) defined as CD/CP that is less or equal to 1.0 and the blade angles (α) of each blade increase from the respective leading end to the corresponding trailing end.
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