Fuel nozzles and centerbodies therefor

(19)

(11)

EP 0 849 530 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	09.06.1999 Bulletin 1999/23

(43)	Date of publication A2:
	24.06.1998 Bulletin 1998/26

(21)	Application number: 97310464.9

(22)	Date of filing: 22.12.1997

(51)	International Patent Classification (IPC)⁶: F23C 7/00, F23D 17/00

(84)	Designated Contracting States:
	AT BE CH 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:

20.12.1996 US 770277
20.12.1996 US 771460

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

(72)	Inventors:
	Kramer, Stephen K. Stuart, Florida 34997 (US) Hauck, Stephen F. Jupiter, Florida 33458 (US) Snyder, Timothy S. South Windsor, Connecticut 06101 (US) Sowa, William A. Simsbury, Connecticut 06070 (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 nozzles and centerbodies therefor

(57) A tangential air entry fuel nozzle (10) has a combustor inlet port (20) to permit air and fuel to exit into a combustor (56). The port includes a convergent surface (116), a combustor surface, and a cylindrical surface (118) extending therebetween. The convergent surface extends a first distance along the longitudinal axis (26) of the nozzle, the cylindrical surface extends a second distance along the axis, and the second distance is at least 30% of the first distance.

Search report