Internal fuel manifold with airblast nozzles
AssigneePratt & Whitney Canada Corp.
InventorsLev Prociw, Aleksandar Kojovic, Harris Shafique
Life of this patent
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Abstract
A gas turbine engine internal fuel manifold has a plurality of airblast fuel nozzles in communication with an air source such that nozzle core air does not pass through the manifold.
Claims20
A gas turbine engine internal fuel manifold assembly comprising:
- an annular fuel distribution member defining at least one fuel flow passage therein;
- and
- a plurality of fuel nozzles mounted to said fuel distribution member and having spray tips in fuel flow communication with said at least one fuel flow passage, each of said fuel nozzles having at least one airflow passage extending therethrough between said spray tip and an air inlet defined in said fuel nozzle, said at least one airflow passage being in communication with an air source independently of said fuel distribution member.
A fuel injection system of a gas turbine engine comprising:
- an annular fuel manifold having a body defining at least one fuel flow passage therein;
- and
- a plurality of fuel nozzles disposed in fuel flow communication with said at least one fuel flow passage, said fuel nozzles being radially offset from said fuel manifold body such that a central spray axis of each of said fuel nozzles is spaced apart from said fuel manifold body, said fuel nozzles having a core airflow passage defined therethrough and having at least one air inlet in communication with said core airflow passage, said core airflow passage adapted to direct air therethrough for propelling fuel from said fuel flow passages.
A fuel injection system of a gas turbine engine, the system comprising a fuel manifold, a plurality of nozzles mounted to said manifold and having spray tips for injecting an air/fuel mixture into a combustor, each of said nozzles defining centrally therein at least one core airflow passage in communication with said spray tip and at least one fuel flow passage providing fluid flow communication between said fuel manifold and said spray tip, said fuel passage being concentric with and disposed around said air passage at said spray tip, said system further comprising means for directing air to an inlet of said airflow passage independently of the manifold.
Dependencies are inferred from the claim text.