Global Patent Index - EP 1004823 A2

EP 1004823 A2 2000-05-31 - Damping device for the reduction of the oscillation amplitude of acoustic waves for a burner

Title (en)

Damping device for the reduction of the oscillation amplitude of acoustic waves for a burner

Title (de)

Dämpfungsvorrichtung zur Reduzierung der Schwingungsamplitude akustischer Wellen für einen Brenner

Title (fr)

Dispositif d'amortissement pour la réduction de l'amplitude d'oscillation d'ondes acoustiques pour un brûleur

Publication

EP 1004823 A2 (DE)

Application

EP 99810950 A

Priority

DE 19851636 A

Abstract (en)

[origin: DE19851636A1] Preferably for driving a gas turbo-group, the internal combustion engine burner incorporates a damping device for reduction of the vibration amplitude of acoustic waves. A mixture area (2) is provided for air and fuel and a combustion chamber (1) is arranged beyond the mixture area in which the fuel-air mixture is ignited. A Helmholz resonator (4) is directly connected with the mixture area. The acoustic waves formed in the burner are suppressed in the resonator and are not reflected back into the burner. The resonator is arranged in the flow direction of the fuel-air mixture before the mixture area.

Abstract (de)

Beschrieben wird eine Dämpfungsvorrichtung zur Reduzierung der Schwingungsamplitude akustischer Wellen für einen Brenner zum Betrieb einer Brennkraftmaschine, vorzugsweise zum Antrieb einer Gasturbogruppe, mit einem Mischbereich, in dem eine Luft- und Brennstoffströmung zu einem Brennstoff-/Luft-Gemisch miteinander vermischt werden, und einer Brennkammer, die in Strömungsrichtung des Brennstoff-/Luft-Gemisch dem Mischbereich nachgeordnet ist, in der das Brennstoff-/Luft-Gemisch entzündbar ist. Die Erfindung zeichnet sich dadurch aus, daß ein Helmholtz-Resonator (4) derart unmittelbar mit dem Mischbereich (2) des Brenners verbunden ist, daß die sich im Brenner ausbildenden akustischen Wellen im Helmholtz-Resonator unterdrückt und nicht in den Brenner zurückreflektiert werden. <IMAGE>

IPC 1-7 (main, further and additional classification)

F23M 13/00; F23D 17/00

IPC 8 full level (invention and additional information)

F23R 3/18 (2006.01); F23D 14/46 (2006.01); F23R 3/28 (2006.01)

CPC (invention and additional information)

F23D 14/46 (2013.01); F23R 3/286 (2013.01); F05B 2260/96 (2013.01); F23C 2900/07002 (2013.01); F23D 2210/00 (2013.01); F23R 2900/00014 (2013.01)

Citation (applicant)

EP 0321809 A1 19890628 - BBC BROWN BOVERI & CIE [CH]

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

DE 19851636 A1 20000511; CN 1151344 C 20040526; CN 1257179 A 20000621; EP 1004823 A2 20000531; EP 1004823 A3 20001129; EP 1004823 B1 20030820; JP 2000146182 A 20000526; JP 4511658 B2 20100728; US 6370879 B1 20020416

INPADOC legal status


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2004-08-11 [26N] NO OPPOSITION FILED

- Effective date: 20040524

2004-05-28 [ET] FR: TRANSLATION FILED

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