Back to results
US 2017/0254269 A1Published application
Fuel heat exchanger with leak management
AssigneesROLLS-ROYCE plc, Rolls-Royce North American Technologies Inc.
InventorsDouglas J. Snyder, Ronald A. Hall
Life of this patent
Estimating the term…
Abstract
A cooling air system for use in a gas turbine engine includes a microchannel fuel-air heat exchanger. The fuel-air heat exchanger allows heat transfer between a flow of cooling air used to cool components of the engine and a flow of fuel used to drive the engine.
Claims28
A fuel injector for a gas turbine engine, the injector comprising
- a nozzle configured to discharge fuel into a combustion chamber included in the gas turbine engine,
- a stem coupled to the nozzle, and configured to conduct fuel to the nozzle, and
- a microchannel fuel-air heat exchanger integral with the stem and including a fuel passageway fluidly coupled with the nozzle to pass fuel and a cooling air passageway arranged in thermal communication with the fuel passageway to transmit heat to fuel within the fuel passageway, the fuel-air heat exchanger including a leak management system arranged to guide leakage from at least one of the fuel and cooling air passageways to discourage hazardous condition formation, wherein each of the fuel and cooling air passageways are microchannel passageways.
A gas turbine engine comprising
- a power train including a compressor, combustor, and a turbine, the compressor arranged to receive rotation power from the turbine to compress air, the combustor including combustion chamber arranged to receive air from the compressor and fuel for combustion to form exhaust products, the turbine including a rotor and blade extending from the rotor to receive exhaust products expanding across the blades to drive rotation of the rotor, and
- a fuel injector comprising
- a nozzle configured to discharge fuel into the combustion chamber,
- a stem coupled to the nozzle and configured to conduct fuel to the nozzle;
- and
- a microchannel fuel-air heat exchanger integral with the stem and including a fuel passageway fluidly coupled with the nozzle to pass fuel and a cooling air passageway arranged in thermal communication with the fuel passageway to transmit heat to fuel within the fuel passageway, the fuel-air heat exchanger including a leak management system arranged to guide leakage from at least one of the fuel and cooling air passageways to discourage hazardous condition formation, wherein each of the fuel and cooling air passageways are microchannel passageways.
3 more elements
Dependencies are inferred from the claim text.