(19)
(11) EP 0 939 275 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.09.1999 Bulletin 1999/39

(43) Date of publication A2:
01.09.1999 Bulletin 1999/35

(21) Application number: 98310791.3

(22) Date of filing: 30.12.1998
(51) International Patent Classification (IPC)6: F23C 7/00, F23C 5/02, F23D 11/10, F23R 3/10, F23R 3/28
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 30.12.1997 US 897

(71) Applicant: UNITED TECHNOLOGIES CORPORATION
Hartford, Connecticut 06101 (US)

(72) Inventors:
  • Rup, John J. Jr.
    Willington, Connecticut 06279 (US)
  • Hoke, James B.
    Tolland, Connecticut 06084 (US)

(74) Representative: Leckey, David Herbert 
Frank B. Dehn & Co., European Patent Attorneys, 179 Queen Victoria Street
London EC4V 4EL
London EC4V 4EL (GB)

   


(54) Fuel nozzle and nozzle guide for gas turbine engine


(57) A fuel nozzle/guide assembly for a gas turbine engine for reducing NOx emissions has a central axial inflow swirler (32) and either three concentric radial inflow swirlers (34, 62, 88) or, alternatively, two concentric radial inflow swirlers (34, 62) and a concentric array of air passages (74), for rapid uniform fuel-air mixing downstream from the fuel injector.






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