US 12,221,976 B1
Radial impeller with maximized inducer area
Viktor Kilchyk, Lancaster, NY (US); and Brent J. Merritt, Southwick, MA (US)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Aug. 7, 2023, as Appl. No. 18/366,238.
Int. Cl. F04D 29/28 (2006.01); F04D 17/02 (2006.01); F04D 17/08 (2006.01); F04D 17/10 (2006.01); F04D 23/00 (2006.01); F04D 29/24 (2006.01); F04D 29/32 (2006.01); F04D 29/38 (2006.01); F04D 29/54 (2006.01)
CPC F04D 29/284 (2013.01) [F04D 17/10 (2013.01); F04D 17/02 (2013.01); F04D 17/08 (2013.01); F04D 23/003 (2013.01); F04D 29/242 (2013.01); F04D 29/247 (2013.01); F04D 29/325 (2013.01); F04D 29/38 (2013.01); F04D 29/384 (2013.01); F04D 29/544 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A rotor assembly, comprising:
a two-piece rotor impeller comprising a blade section and a forward section, which is connected to the blade section; and
a rotor shaft comprising an aft section at which the rotor shaft terminates, the aft section being directly attached to the forward section of the rotor impeller,
the blade section comprising a converging blade configured to converge to a point with a minimized internal diameter (ID) and an exit blade,
wherein:
the converging blade extends aft from the forward section and converges toward the point with a non-linear profile, and
the non-linear profile comprises a steep forward portion, a shallow aft portion and a curved portion axially inte d between the steep forward portion and the shallow aft portion.