EP 0902237 A3 20000920 - Combustor swirler with twisted vanes
Title (en)
Combustor swirler with twisted vanes
Title (de)
Verwundene Drallschaufeln für eine Brennkammer
Title (fr)
Vrille avec des aubes tordues pour chambre de combustion
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)
Citation (search report)
- [X] WO 8906307 A1 19890713 - SUNDSTRAND CORP [US]
- [X] US 2798661 A 19570709 - WILLENBROCK JR ARTHUR, et al
- [X] US 4221558 A 19800909 - SANTISI HARRY C
- [A] EP 0397046 A2 19901114 - MITSUBISHI HEAVY IND LTD [JP]
- [A] US 5186607 A 19930216 - YANG SHYH-CHING [TW], et al
- [A] US 1931692 A 19331024 - GOOD PAUL E
- [A] US 4695225 A 19870922 - HELLAT JAAN [CH], et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
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