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IMPELLER WITH OFFSET SPLITTER BLADES

United States Patent Application

20160281732
A1
View the Complete Application at the US Patent & Trademark Office
An impeller includes a hub mountable to a rotary shaft and configured to rotate about a center axis. The impeller may include a plurality of main blades and splitter blades arranged equidistantly and circumferentially about the center axis. A splitter blade having a leading edge and a trailing edge may be positioned between first and second adjacent main blades and canted such that the leading edge is displaced from a blade position equidistant the first and second adjacent main blades a first percentage amount of one half an angular distance between the first and second adjacent main blades. The trailing edge may be displaced from the blade position equidistant the first and second adjacent main blades a second percentage amount of one half the angular distance between the first and second adjacent main blades. The second percentage amount may be greater or less than the first percentage amount.
Lardy, Pascal (Notre Dame du Bec, FR), Sorokes, James M. (Olean, NY), Kuzdzal, Mark J. (Allegany, NY)
DRESSER-RAND COMPANY (Olean NY)
15/ 075,321
March 21, 2016
STATEMENT OF GOVERNMENT INTEREST [0002] This invention was made with government support under Government Contract No. DOE-DE-FE0000493 awarded by the U.S. Department of Energy. The government has certain rights in the invention.