DK1211460T3 - Flame detection circuit - Google Patents

Flame detection circuit

Info

Publication number
DK1211460T3
DK1211460T3 DK01127983T DK01127983T DK1211460T3 DK 1211460 T3 DK1211460 T3 DK 1211460T3 DK 01127983 T DK01127983 T DK 01127983T DK 01127983 T DK01127983 T DK 01127983T DK 1211460 T3 DK1211460 T3 DK 1211460T3
Authority
DK
Denmark
Prior art keywords
burner
detection circuit
flame detection
compensating
ionization electrode
Prior art date
Application number
DK01127983T
Other languages
Danish (da)
Inventor
Jochen Grabe
Carsten Woelfl
Original Assignee
Vaillant Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vaillant Gmbh filed Critical Vaillant Gmbh
Application granted granted Critical
Publication of DK1211460T3 publication Critical patent/DK1211460T3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
    • F23N5/123—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electronic means

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Control Of Combustion (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

The burner monitoring circuit has a changeover voltage (Uion) connected ionization electrode (Iioni) mounted adjacent to the burner flame. It has an evaluation monitor connected to a compensating voltage source (Ub) with a ionization electrode current flow controlled transistor (T152). The negative pole of the compensating source (Ub) is connected to the burner mass. The positive pole is connected to a deep pass filter (C154) to the ionisation electrode.
DK01127983T 2000-12-01 2001-11-24 Flame detection circuit DK1211460T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10061252 2000-12-01
AT8622001 2001-06-05

Publications (1)

Publication Number Publication Date
DK1211460T3 true DK1211460T3 (en) 2007-01-08

Family

ID=25608447

Family Applications (1)

Application Number Title Priority Date Filing Date
DK01127983T DK1211460T3 (en) 2000-12-01 2001-11-24 Flame detection circuit

Country Status (5)

Country Link
EP (1) EP1211460B1 (en)
AT (1) ATE338250T1 (en)
DE (2) DE50110866D1 (en)
DK (1) DK1211460T3 (en)
ES (1) ES2270940T3 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1277402A (en) * 1968-08-27 1972-06-14 United Gas Industries Ltd Flame detection system
NL8401173A (en) * 1984-04-12 1985-11-01 Philips Nv FLAME PROTECTION CIRCUIT.
GB8906235D0 (en) * 1989-03-17 1989-05-04 Cambridge Instr Ltd Flame detection apparatus and method
US5472336A (en) * 1993-05-28 1995-12-05 Honeywell Inc. Flame rectification sensor employing pulsed excitation
JP3219006B2 (en) 1997-01-29 2001-10-15 トヨタ自動車株式会社 Power output device

Also Published As

Publication number Publication date
EP1211460B1 (en) 2006-08-30
DE50110866D1 (en) 2006-10-12
DE10159032A1 (en) 2002-09-12
ATE338250T1 (en) 2006-09-15
EP1211460A2 (en) 2002-06-05
EP1211460A3 (en) 2004-04-14
ES2270940T3 (en) 2007-04-16

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