US 11,852,345 B2
Pre-diffuser for a gas turbine engine
Michael G. McCaffrey, Windsor, CT (US); Matthew Andrew Hough, West Simsbury, CT (US); and Pedro E. Rivero, Miami, FL (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by RTX Corporation, Farmington, CT (US)
Filed on Jun. 22, 2022, as Appl. No. 17/846,412.
Application 17/846,412 is a continuation of application No. 16/376,448, filed on Apr. 5, 2019, granted, now 11,371,704.
Prior Publication US 2023/0089675 A1, Mar. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F23R 3/10 (2006.01); F04D 29/54 (2006.01); F01D 9/04 (2006.01); F23R 3/00 (2006.01); C07K 16/28 (2006.01)
CPC F23R 3/10 (2013.01) [C07K 16/2863 (2013.01); F01D 9/041 (2013.01); F04D 29/545 (2013.01); F23R 3/005 (2013.01); C07K 2317/31 (2013.01); C07K 2317/622 (2013.01); C07K 2317/626 (2013.01); F05D 2230/60 (2013.01); F05D 2240/12 (2013.01); F05D 2240/35 (2013.01); F05D 2240/55 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A pre-diffuser downstream of a compressor section of a gas turbine engine, comprising:
a full ring ring-strut-ring structure that comprises a multiple of hollow struts and a multiple of inlets to a multiple of diffusion passages, one of the multiple of inlets and a respective one of the multiple of diffusion passages being between each one of the multiple of hollow struts, wherein each of the multiple of hollow struts comprises a cavity in communication with a combustor section of the gas turbine engine through a passage, wherein the passage has a passage opening on a downstream surface of each of the multiple of hollow struts, and the passage opening is the only inlet or outlet to the cavity for fluidic contact outside of the cavity; and
a multiple of diffusion passage ducts extending from the ring-strut-ring structure, each of the multiple of diffusion passage ducts in communication with one of the multiple of diffusion passages.