US 11,053,950 B2
Centrifugal compressor open impeller
Vishnu M. Sishtla, Manlius, NY (US); and William T. Cousins, Glastonbury, CT (US)
Assigned to Carrier Corporation, Palm Beach Gardens, FL (US)
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
Filed on Feb. 20, 2019, as Appl. No. 16/280,346.
Claims priority of provisional application 62/642,827, filed on Mar. 14, 2018.
Prior Publication US 2019/0285081 A1, Sep. 19, 2019
Int. Cl. F04D 29/28 (2006.01); F04D 17/10 (2006.01); F04D 29/66 (2006.01); B33Y 10/00 (2015.01); F04D 25/06 (2006.01)
CPC F04D 29/284 (2013.01) [F04D 17/10 (2013.01); F04D 29/668 (2013.01); B33Y 10/00 (2014.12); F04D 25/06 (2013.01); F05B 2230/22 (2013.01); F05B 2240/301 (2013.01); F05B 2240/33 (2013.01); F05B 2280/1021 (2013.01); F05B 2280/10304 (2013.01); F05B 2280/2001 (2013.01); F05B 2280/4006 (2013.01); F05B 2280/6014 (2013.01); F05D 2230/31 (2013.01); F05D 2260/96 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A centrifugal compressor impeller (60; 160) comprising:
a hub (62; 162) having a gaspath surface (64; 164) extending from a leading end to a trailing end;
a plurality of blades (70A, 70B; 170) extending from the hub gaspath surface and each having:
a leading edge (72A, 72B; 172);
a trailing edge (74A, 74B; 174);
a first face (80A, 80B; 180);
a second face (82A, 82B; 182); and
a tip (78A, 78B; 178); and
a plurality of flow splitter segments (120, 122; 320, 322) extending between associated twos of the blades and each spaced from both the hub gaspath surface and the tips of the associated two blades, wherein:
the plurality of flow splitter segments comprises a plurality of first flow splitter segments forming a first circumferential ring (120; 320); and
the plurality of flow splitter segments comprises a plurality of second flow splitter segments forming a second circumferential ring (122; 322).