EP 0902237 B1 20031203 - Combustor comprising swirler with twisted vanes
Title (en)
Combustor comprising swirler with twisted vanes
Title (de)
Gasturbinenbrennkammer mit verwundenen Drallschaufeln
Title (fr)
Chambre de combustion avec une vrille avec des aubes tordues
Publication
Application
Priority
JP 24547797 A 19970910
Abstract (en)
[origin: EP0902237A2] Pre-mixture forming swirler in gas turbine pre-mixed flame type low NOx combustor is improved so as to accelerate mixing of fuel and air and to prevent occurrence of flame stagnation and burning of component. Three-dimensional swirler is constructed such that swirler vane (101a) is twisted from hub side thereof to tip side so that fitting angle ( beta ) of the tip side relative to fuel nozzle (102) center axis (C) is larger than that ( alpha ) of the hub side. Thereby, while the angle ( alpha ) of the hub side is set smaller so that flame stagnation and burning of components resulted therefrom may be prevented from occurring, the angle ( beta ) of the tip side may be selected so that shearing flow necessary for appropriate mixing of fuel (F) and air (A) is obtained, thus favorable pre-mixing is done, life deterioration due to the burning etc. is prevented and combustion efficiency is enhanced. <IMAGE>
IPC 1-7
IPC 8 full level
F23R 3/14 (2006.01); F23R 3/20 (2006.01); F23R 3/32 (2006.01)
CPC (source: EP)
F23R 3/14 (2013.01)
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0902237 A2 19990317; EP 0902237 A3 20000920; EP 0902237 B1 20031203; CA 2246219 A1 19990310; CA 2246219 C 20021119; DE 69820183 D1 20040115; DE 69820183 T2 20040826; JP H1183016 A 19990326
DOCDB simple family (application)
EP 98116591 A 19980902; CA 2246219 A 19980902; DE 69820183 T 19980902; JP 24547797 A 19970910