EP1707880A1 - Procédé pour détecter la présence d'une flamme dans une chambre de combustion et système d'allumage pour brûleur - Google Patents

Procédé pour détecter la présence d'une flamme dans une chambre de combustion et système d'allumage pour brûleur Download PDF

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Publication number
EP1707880A1
EP1707880A1 EP05027648A EP05027648A EP1707880A1 EP 1707880 A1 EP1707880 A1 EP 1707880A1 EP 05027648 A EP05027648 A EP 05027648A EP 05027648 A EP05027648 A EP 05027648A EP 1707880 A1 EP1707880 A1 EP 1707880A1
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EP
European Patent Office
Prior art keywords
ignition
ignition device
burner
flame
center tap
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP05027648A
Other languages
German (de)
English (en)
Other versions
EP1707880B1 (fr
Inventor
Odd Peters
Dieter Teutsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Federal Mogul Ignition GmbH
Original Assignee
Beru AG
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Publication date
Application filed by Beru AG filed Critical Beru AG
Publication of EP1707880A1 publication Critical patent/EP1707880A1/fr
Application granted granted Critical
Publication of EP1707880B1 publication Critical patent/EP1707880B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q3/00—Igniters using electrically-produced sparks
    • F23Q3/004—Using semiconductor elements
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/12—Flame sensors with flame rectification current detecting means

Definitions

  • the invention relates to a method for detecting the presence of a flame in the combustion chamber of a burner, in particular a gas or oil burner and an ignition device for a burner, in particular a gas or oil burner with an ignition transformer which applies an ignition voltage to an ignition electrode of the burner, and a ion current detector for detecting an ionic current in the combustion chamber of the burner.
  • Such an ignition device serves to ignite a flame in the combustion chamber of the burner and to detect the ion stream which then occurs and thus the presence of a flame in the combustion chamber of the burner.
  • a separate ionization electrode is provided for this purpose in addition to the ignition transformer and the ignition electrode, which is operated with a mains voltage of, for example, 230 V and 50 Hz.
  • the object underlying the invention is therefore to provide a method and an ignition device of the type mentioned in such a way that results in a higher signal yield.
  • the method according to the invention and the ignition device according to the invention are intended to enable ion current detection even during ignition operation and to be insensitive to oxidation phenomena.
  • the ion current detection takes place via the ignition transformer and the existing ignition electrode, which offers a high signal yield. Due to this configuration, a simultaneous ion current detection and evaluation is also possible in the ignition mode, which is insensitive to oxidation in the ignition electrode.
  • Additional flame detection systems are no longer necessary, resulting in a favorable optimized flame formation in the burner, which is due to the fact that the flow, for example, the swirl of the air-fuel mixture, with which the burner is operated, is not affected to the extent it in the arrangement of additional flame detection systems is the case.
  • the ignition device shown therein comprises an ignition transformer ZÜ1, which consists of a primary inductance L1 and a secondary inductance of two Operasekundärinduktterrorismen L2 and L3.
  • a supply voltage V1 from a corresponding supply voltage source. This may be a DC voltage of, for example 12 or 24 V or a rectified AC voltage of 230 V.
  • the two subsecondary inductances L2, L3, which are connected in series, are connected to an ignition electrode ZE.
  • the primary inductance L1 of the ignition transformer Zü1 is connected to the side facing away from the supply voltage V1 via a transistor Q1 and a resistor R1 and a parallel circuit consisting of a switch S1 and a resistor R3 to ground.
  • a high-frequency drive signal V2 having a frequency of, for example, 10 kHz to 30 kHz.
  • a center tap is provided, which is connected to ground via a resistor R0.
  • the subsecondary inductances L2, L3 of the ignition transformer Zü1, the ignition electrode ZE and the resistor R0 form an ion current detection device.
  • An integrator R2, C1 is provided in parallel with the resistor R0.
  • the center tap between the resistor R2 and the capacitor C1 of the integrator forms the output port OUT for the ion current signal.
  • the integrator R2, C1 smoothes the detected signal that is output at the output OUT.
  • the center tap may also be formed as a direct tap on the connection line between the subsecondary inductances L2 and L3 as well as an inductive tap in the form of some additional turns laid around the coil forming the subsecondary inductances L2 and L3, or as a capacitive tap ,
  • the subsecondary inductances L2 and L3 may be symmetric or unbalanced with respect to the center tap, i. that the subsecondary inductances L2 and L3 can be approximately equal or unequal.
  • a voltage limiter X1 is connected in parallel to the resistor R0 and serves to protect the evaluation circuit R0, R2, C2, since the voltages occurring at the center tap between the subsecondary inductances L2 and L3 can be up to 600 V.
  • the charging current through the primary inductance L1 is determined by the resistor R1 and the parallel series circuit of the switch S1 and the resistor R3.
  • the charging current can be varied by opening or closing the switch S1.
  • This current flow is due to the fact that free charge carriers are present in the flame, wherein the electrons are attracted because of their negative charge of the positive voltage in the ignition electrode ZE, resulting in a rectifying effect due to the diode action.
  • This rectification effect leads to a potential shift at the center tap between the subsecondary inductances L2, L3 in the negative direction.
  • the current value of this rectified voltage is detected at the resistor R0.
  • the integrator R2, C1 smoothes the detected signal, which is then output at the output OUT.
  • Fig. 3 shows this integrated output signal at the output OUT.
  • the high-frequency voltage with frequencies of for example 10 to 30 kHz at the ignition electrode ZE can be chosen arbitrarily, depending on how high the sensitivity of the system should be, so that simultaneously with the spark generation at the ignition electrode ZE an ion current detection is possible.
  • the ignition electrode may be a one- or two-pole electrode.
  • a high-voltage side for example, remains open at the partial secondary inductance L3, and the ignition electrode ZE is grounded on one side, ion current detection is likewise possible.
  • FIG. 2 shows the signal at the primary inductance L1 of the ignition transformer Zü1 in the ignition mode.
  • the voltage of approximately 500 V shown in FIG. 2 is transformed upwards via the secondary secondary inductances L2, L3 of the ignition transformer Zü1 and applied to the ignition electrode ZE.
  • Fig. 3 shows the integrated output signal at the output OUT, the circuit arrangement shown in Fig. 1, wherein Fig. 3 shows a curve which has been recorded on a gas burner with an embodiment of the device according to the invention.
  • the rectification effect of the flame results in a negative voltage of about 100 V.
  • the delay in igniting and switching off the flame results from the integration by R2, C1.
  • FIGS. 2, 3 the voltage versus time is plotted in each case.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
EP20050027648 2005-03-17 2005-12-16 Appareil pour la détection de la présence d'une flamme dans une chambre de combustion et système d'allumage pour brûleur Active EP1707880B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005012388A DE102005012388B4 (de) 2005-03-17 2005-03-17 Verfahren zum Erfassen des Vorliegens einer Flamme im Brennraum eines Brenners und Zündvorrichtung für einen Brenner

Publications (2)

Publication Number Publication Date
EP1707880A1 true EP1707880A1 (fr) 2006-10-04
EP1707880B1 EP1707880B1 (fr) 2015-05-20

Family

ID=36587049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050027648 Active EP1707880B1 (fr) 2005-03-17 2005-12-16 Appareil pour la détection de la présence d'une flamme dans une chambre de combustion et système d'allumage pour brûleur

Country Status (2)

Country Link
EP (1) EP1707880B1 (fr)
DE (1) DE102005012388B4 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9863635B2 (en) 2015-06-24 2018-01-09 General Electric Technology Gmbh Combined ignitor spark and flame rod
CN111720851A (zh) * 2019-03-22 2020-09-29 威能有限公司 在燃烧器的火焰区域中再生用于电离测量的电极的方法和装置
WO2020228979A1 (fr) 2019-05-16 2020-11-19 Truma Gerätetechnik GmbH & Co. KG Procédé de surveillance d'un brûleur et/ou d'un comportement de combustion d'un brûleur ainsi qu'ensemble de brûleur
DE102019119214A1 (de) * 2019-07-16 2021-01-21 Vaillant Gmbh Verfahren und Vorrichtung zur Nachkalibrierung eines Messsystems zur Regelung eines Brenngas-Luft-Gemisches in einem Heizgerät

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018120377A1 (de) * 2018-08-21 2020-02-27 Truma Gerätetechnik GmbH & Co. KG Heizvorrichtung und Verfahren zum Regeln eines gebläsebetriebenen Gasbrenners

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1517809A (fr) * 1966-12-05 1968-03-22 Landis & Gyr Ag Montage d'entrée d'amplificateur pour appareil combiné d'allumage et de surveillance de flamme
GB1227552A (fr) * 1967-06-26 1971-04-07
GB2018969A (en) * 1978-03-24 1979-10-24 Hitachi Ltd Ignition/Flame-Detection Device for a Burner Combustion Control System
US4382770A (en) * 1980-10-22 1983-05-10 Honeywell Inc. Safe start fuel burner control system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT243411B (de) * 1963-11-04 1965-11-10 Kromschroeder Ag G Gasflammenzüd- und Überwachungseinrichtung für gas- oder ölbeheizte Feuerstätten
US3291183A (en) * 1965-09-13 1966-12-13 Controls Co Of America Spark ignition and flame sensing circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1517809A (fr) * 1966-12-05 1968-03-22 Landis & Gyr Ag Montage d'entrée d'amplificateur pour appareil combiné d'allumage et de surveillance de flamme
GB1227552A (fr) * 1967-06-26 1971-04-07
GB2018969A (en) * 1978-03-24 1979-10-24 Hitachi Ltd Ignition/Flame-Detection Device for a Burner Combustion Control System
US4382770A (en) * 1980-10-22 1983-05-10 Honeywell Inc. Safe start fuel burner control system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9863635B2 (en) 2015-06-24 2018-01-09 General Electric Technology Gmbh Combined ignitor spark and flame rod
CN111720851A (zh) * 2019-03-22 2020-09-29 威能有限公司 在燃烧器的火焰区域中再生用于电离测量的电极的方法和装置
WO2020228979A1 (fr) 2019-05-16 2020-11-19 Truma Gerätetechnik GmbH & Co. KG Procédé de surveillance d'un brûleur et/ou d'un comportement de combustion d'un brûleur ainsi qu'ensemble de brûleur
DE102019003451A1 (de) * 2019-05-16 2020-11-19 Truma Gerätetechnik GmbH & Co. KG Verfahren zum Überwachen eines Brenners und/oder eines Brennverhaltens eines Brenners sowie Brenneranordnung
DE102019119214A1 (de) * 2019-07-16 2021-01-21 Vaillant Gmbh Verfahren und Vorrichtung zur Nachkalibrierung eines Messsystems zur Regelung eines Brenngas-Luft-Gemisches in einem Heizgerät

Also Published As

Publication number Publication date
DE102005012388B4 (de) 2007-09-20
EP1707880B1 (fr) 2015-05-20
DE102005012388A1 (de) 2006-10-26

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