EP 0276398 B1 19901010 - BURNER
Title (en)
BURNER
Publication
Application
Priority
DE 3702415 A 19870128
Abstract (en)
[origin: EP0276398A2] 1. Burner with a central fuel duct (12) and a feed tube (1) for combusion air, which tube is closed at one end by a closure body (4) displaying a central passage opening (5), wherein a swirl body (7) for the production of a rapidly rotating air whirl is arranged in the guide tube (1), the swirl body (7) with the closure body (4) forms a radial gap (10) extending perpendicularly to the axis of the guide tube (1), the passage opening (5) of the closure body (4) displays a first portion (15), which is dimensioned in such a manner that the flow speed corresponds to at least three times the flame propagation velocity and which is adjoined by a second widening portion (16), the greatest dimension of which is dimensioned in such a manner that the flow speed at the end of this portion (16) is smaller than the flame propagation velocity, characterised thereby, that the fuel duct (12) conducting a gaseous fuel displays lateral exit openings (14), which are arranged in the under-pressure zone of the air whirl establishing itself in the first portion (15) of the passage opening (5), and that the first portion (15) enlarges conically and the second portion (16) adjoining thereat enlarges in bell shape in the direction of the fuel flow, wherein a flame holder (17) is arranged behind the second portion.
IPC 1-7
IPC 8 full level
F23D 14/24 (2006.01); F23D 14/74 (2006.01)
CPC (source: EP)
F23D 14/24 (2013.01); F23D 14/74 (2013.01)
Designated contracting state (EPC)
AT CH DE FR IT LI SE
DOCDB simple family (publication)
EP 0276398 A2 19880803; EP 0276398 A3 19890412; EP 0276398 B1 19901010; AT E57430 T1 19901015; DE 3702415 C1 19880421; DE 3765536 D1 19901115
DOCDB simple family (application)
EP 87117120 A 19871120; AT 87117120 T 19871120; DE 3702415 A 19870128; DE 3765536 T 19871120