Global Patent Index - EP 0728989 A3

EP 0728989 A3 19970820 - Gas turbine engine combustor

Title (en)

Gas turbine engine combustor

Title (de)

Verbrennungsgerät für Gasturbinenmotor

Title (fr)

Appareil de combustion pour moteur de turbine à gaz

Publication

EP 0728989 A3 19970820 (EN)

Application

EP 96300281 A 19960115

Priority

  • GB 9500627 A 19950113
  • GB 9519826 A 19950929

Abstract (en)

[origin: EP0728989A2] A lean burn combustor for a gas turbine engine has a pilot burner (114) which injects fuel and air separately, the air being injected as a swirling column from a circular slot (302) in the burner head (214) to establish a divergent columnar shear layer (303) in the combustor, and the fuel being injected from a peripheral annular gap in the burner head towards the column of air (300) for mixing with it in the shear layer (303). A main burner (120,122) surrounds the pilot burner and by means of swirler passages (122) injects a fuel-lean main fuel/air mixture into the combustor towards the shear layer (303) for mixing with the pilot fuel and air. The shear layer establishes a sheltered combustion region (107) near the pilot burner and some fuel/air mixture (304) capable of stable combustion in the sheltered region is recirculated from the shear layer into the sheltered region to increase the stability of lean burn combustion in the combustor over a wide range of engine load conditions. <IMAGE>

IPC 1-7

F23C 7/00; F23D 14/24; F23D 14/74; F23D 17/00; F23D 23/00

IPC 8 full level

F02C 7/057 (2006.01); F23C 7/00 (2006.01); F23D 14/74 (2006.01); F23K 5/00 (2006.01); F23R 3/12 (2006.01); F23R 3/28 (2006.01)

CPC (source: EP)

F23C 7/002 (2013.01); F23D 14/74 (2013.01); F23R 3/286 (2013.01); F23C 2202/40 (2013.01); F23D 2204/00 (2013.01); F23D 2206/10 (2013.01); F23D 2207/00 (2013.01); F23D 2900/00016 (2013.01)

Citation (search report)

Designated contracting state (EPC)

CH DE FR GB IT LI SE

DOCDB simple family (publication)

EP 0728989 A2 19960828; EP 0728989 A3 19970820; EP 0728989 B1 20011128; DE 69617290 D1 20020110; DE 69617290 T2 20020613; JP H08240129 A 19960917

DOCDB simple family (application)

EP 96300281 A 19960115; DE 69617290 T 19960115; JP 2310896 A 19960116