EP 0491079 B1 19961016 - Burner head for premix combustion of a liquid fuel in an atmospheric combustion installation
Title (en)
Burner head for premix combustion of a liquid fuel in an atmospheric combustion installation
Title (de)
Brennerkopf für die vormischartige Verbrennung eines flüssigen Brennstoffes in einer atmosphärischen Feuerungsanlage
Title (fr)
Tête de brûleur pour la combustion à mélange préalable d'un combustible liquide dans une installation de combustion atmosphérique
Publication
Application
Priority
EP 90124798 A 19901219
Abstract (en)
[origin: EP0491079A1] The burner head has a fuel lance (1) which runs through the burner head in its length and which ends on the downstream side with a fuel nozzle (2). Acting around this fuel lance (1) is a combustion air duct (4) which stops on the downstream side with a screen (3). Arranged around this first combustion air duct (4) is a further combustion air duct (6) which passes on the downstream side into an outlet, where a number of guide members (9) is situated, which impose a twist on at least the combustion air flowing through this duct. Also affected by this twist are the waste gases (10) flowing in through a tangential duct (11) in the region of the guide members (9), as a result of which there is good mixing between the two media. Acting on the downstream side of the fuel nozzle (2) is a premixing zone (8), adjoining the end of which is a vortex backflow zone (14), As far as this vortex backflow zone, the combustion chamber is provided with a premixing pipe (13), and subsequently a combustion pipe (19, 19a) acts, which has a greater cross-section in relation to the premixing pipe (13). At the transition of these two pipes, a vortex ring (17) is formed, which surrounds the vortex backflow zone (14) and ensures that the flame stabilisation is maintained, by the last-mentioned zone not being able to flatten. The initial ignition (18) of the mixture takes place in the vortex ring (17).
IPC 1-7
IPC 8 full level
F23C 7/00 (2006.01); F23C 9/00 (2006.01); F23D 11/40 (2006.01)
CPC (source: EP)
F23C 7/00 (2013.01); F23C 9/00 (2013.01); F23D 11/402 (2013.01); F23C 2900/06041 (2013.01); F23C 2900/09002 (2013.01); F23D 2209/20 (2013.01)
Designated contracting state (EPC)
AT CH DE FR IT LI NL SE
DOCDB simple family (publication)
EP 0491079 A1 19920624; EP 0491079 B1 19961016; AT E144316 T1 19961115; DE 59010544 D1 19961121
DOCDB simple family (application)
EP 90124798 A 19901219; AT 90124798 T 19901219; DE 59010544 T 19901219