Global patent index - EP 1021684 A1

EP 1021684 A1 2000-07-26 - METHOD AND DEVICE FOR MONITORING A FLAME

Title (en)

METHOD AND DEVICE FOR MONITORING A FLAME

Title (de)

VERFAHREN UND VORRICHTUNG ZUR ÜBERWACHUNG EINER FLAMME

Title (fr)

PROCEDE ET DISPOSITIF POUR LA SURVEILLANCE D'UNE FLAMME

Publication

EP 1021684 A1 (DE)

Application

EP 98950111 A

Priority

  • EP 98950111 A
  • EP 9806392 W
  • EP 97117731 A

Abstract (en)

[origin: EP0908679A1] The flame monitoring circuit has a pair of terminals (1,2) coupled to ionization electrodes (3) of the gas burner or to a UV sensor (4,4a), a low pass filter provided by a resistor (R1) and a capacitor (C1) coupled to one of the circuit terminals (2). The capacitor is supplied with an AC voltage for providing a signal indicating flame failure.

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

F23N 5/12

IPC 8 full level (invention and additional information)

F23N 5/12 (2006.01); F23N 5/08 (2006.01); F23N 5/24 (2006.01)

CPC (invention and additional information)

F23N 5/123 (2013.01); F23N 5/08 (2013.01); F23N 5/24 (2013.01); F23N 2031/10 (2013.01)

Citation (search report)

See references of WO 9919672A1

Designated contracting state (EPC)

CH DE DK FR GB IT LI NL

EPO simple patent family

EP 0908679 A1 19990414; AU 742228 B2 20011220; AU 9629998 A 19990503; DE 59807206 D1 20030320; DK 1021684 T3 20030610; EP 1021684 A1 20000726; EP 1021684 B1 20030212; JP 2001520361 A 20011030; JP 4124962 B2 20080723; US 6501383 B1 20021231; WO 9919672 A1 19990422

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