US 11,808,210 B2
Intercooled cooling air with heat exchanger packaging
Gabriel L. Suciu, Glastonbury, CT (US); Jesse M. Chandler, South Windsor, CT (US); Brian D. Merry, Andover, CT (US); and Nathan Snape, Tolland, CT (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by United Technologies Corporation, Farmington, CT (US)
Filed on May 14, 2018, as Appl. No. 15/978,517.
Application 15/978,517 is a continuation in part of application No. 14/745,539, filed on Jun. 22, 2015, granted, now 10,006,370.
Application 14/745,539 is a continuation in part of application No. 14/695,578, filed on Apr. 24, 2015, abandoned.
Claims priority of provisional application 62/115,578, filed on Feb. 12, 2015.
Prior Publication US 2018/0258860 A1, Sep. 13, 2018
Int. Cl. F02C 7/18 (2006.01); F02C 3/04 (2006.01); F02C 7/32 (2006.01); F02C 9/18 (2006.01)
CPC F02C 7/185 (2013.01) [F02C 3/04 (2013.01); F02C 7/32 (2013.01); F02C 9/18 (2013.01); F05D 2220/323 (2013.01); F05D 2240/90 (2013.01); F05D 2260/213 (2013.01); F05D 2260/4031 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A gas turbine engine comprising:
a plurality of rotating components housed within a compressor section and a turbine section;
a tap connected to said compressor section, said compressor section having a downstream most location and locations upstream of said downstream most location, said tap tapping air from one of said locations upstream of said downstream most location such that air in said tap is at a lower pressure than the air downstream of the downstream most location, a heat exchanger connected downstream of said tap, and a cooling compressor connected downstream of said heat exchanger, and said cooling compressor connected to deliver air to at least one of said rotating components;
a core housing having an outer peripheral surface and a fan housing defining an inner peripheral surface, at least one bifurcation duct extending between said outer peripheral surface to said inner peripheral surface, and said heat exchanger disposed within said at least one bifurcation duct;
an air inlet for air to pass over said heat exchanger in said at least one bifurcation duct and an air outlet;
wherein there is a valve in said air outlet; and
a control moving said valve between an open position at which it allows air to flow from the inlet to the outlet and to a closed position at which it prevents flow passing from said inlet to said outlet;
wherein air is delivered into a first leg within said core housing, the first leg extending outwardly of said core housing and into said at least one bifurcation duct, and to a second leg extending back toward a center axis of the engine, and back into said core housing to deliver the air to said cooling compressor; and
wherein said second leg is positioned to be upstream of said first leg relative to a flow of bypass air between said core housing and said fan housing.