Impeller
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United States of America Patent
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Sep 27, 2011
Grant Date -
Sep 23, 2010
app pub date -
Mar 28, 2007
filing date -
Mar 28, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A pump impeller for a centrifugal pump. The impeller is defined by a shroud rotatable about an axis of rotation. At least two pump vanes extend axially from the shroud, each of the vanes configured as a blunted tear drop shape and having an inside wall and an outside wall, the leading edges of which are interconnected by a blunt wall. The trailing edges of the inside and outside walls merge together. A substantially constant width flow channel is defined between the blunted wall of one vane and a confronting surface defined by an inside wall of the other vane. The vanes are tapered in the axial directions by inclining the inside wall of each vane radially outwardly.
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