US 9,810,079 B2
Cyclonic dirt separating turbine accelerator
Robert Francis Manning, Newburyport, MA (US); and Victor Hugo Silva Correia, Milton Mills, NH (US)
Assigned to General Electric Company, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Mar. 15, 2013, as Appl. No. 13/836,737.
Prior Publication US 2014/0290254 A1, Oct. 2, 2014
Int. Cl. F01D 9/02 (2006.01); F01D 5/08 (2006.01); F01D 25/12 (2006.01); F01D 25/32 (2006.01); F02C 7/052 (2006.01)
CPC F01D 9/02 (2013.01) [F01D 5/081 (2013.01); F01D 25/12 (2013.01); F01D 25/32 (2013.01); F02C 7/052 (2013.01); F05D 2260/607 (2013.01); Y02T 50/676 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A dirt separator assembly for a gas turbine engine having a compressor, a combustor, and a turbine in serial flow relation, comprising:
a cyclonic accelerator in flow communication with compressor discharge air and located downstream of the compressor, said accelerator having a plurality of passages, each passage having an inlet, an outlet and at least one vent located in said passage;
a plurality of turning vanes disposed along each of said passages, said plurality of turning vanes in said passages turning air in said passages tangentially between said inlet and said outlet;
said accelerator passages decreasing from a first cross-sectional area to a second cross-sectional area and said turning vanes inducing helical swirl of compressed cooling air; and,
said at least one vent located in an outer wall of said accelerator passage for expelling dust separated from said swirling compressed cooling air exiting the accelerator assn a throu h said at least one vent via rotational, tangential force and outward from an engine core of the gas turbine engine.