EP2014985A2 - Procédé de réglage du rapport air/carburant d'un brûleur fonctionnant au gaz - Google Patents

Procédé de réglage du rapport air/carburant d'un brûleur fonctionnant au gaz Download PDF

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Publication number
EP2014985A2
EP2014985A2 EP08012196A EP08012196A EP2014985A2 EP 2014985 A2 EP2014985 A2 EP 2014985A2 EP 08012196 A EP08012196 A EP 08012196A EP 08012196 A EP08012196 A EP 08012196A EP 2014985 A2 EP2014985 A2 EP 2014985A2
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EP
European Patent Office
Prior art keywords
fuel gas
signal
ionization electrode
air
gradient
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
EP08012196A
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German (de)
English (en)
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EP2014985A3 (fr
EP2014985B1 (fr
Inventor
Jean-François Rouxel
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.)
Vaillant GmbH
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Vaillant GmbH
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Publication of EP2014985A3 publication Critical patent/EP2014985A3/fr
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Publication of EP2014985B1 publication Critical patent/EP2014985B1/fr
Priority to HRP20170996TT priority Critical patent/HRP20170996T1/hr
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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

Definitions

  • the invention relates to a method for fuel gas-air adjustment for a fuel gas burner.
  • the fuel gas to air ratio of a fuel gas burner can be adjusted by measuring the ionization voltage or the ionization current at a monitoring electrode.
  • the EP 770 824 B1 describes a method in which, starting from a superstoichiometric burner operation, the excess air is reduced until there is a slight substoichiometric combustion.
  • the ionization voltage is measured between an ionization electrode and the burner.
  • ⁇ 1.0
  • the ionization voltage is maximal. Consequently, the ionization voltage, starting from superstoichiometric combustion, initially increases in the reduction of the excess air to reach a maximum under stoichiometric combustion.
  • Embodiments of this control method are also known from DE 40 27 090 C2 .
  • DE 20 2004 017 850 U1 shows a gas burner, in which by means of a thermocouple, the flame temperature is measured.
  • the temperature behaves analogous to the ionization according to EP 770 824 B1 ,
  • the mixture is enriched and the flame temperature is measured. If a maximum is measured, then the mixture is defined as emaciated.
  • a disadvantage of such a method is that always a stoichiometric or slightly substoichiometric combustion must be started. This results in substantial amounts of carbon monoxide and nitrogen oxide emissions.
  • the invention has for its object to provide a method for controlling the fuel gas-air mixture in gas-powered burners by Ionisationsstromunk, which avoids polluting combustion conditions.
  • the object is achieved in that during the operation of the burner, the fuel gas-air mixture is emaciated and in this case the ionization signal is measured continuously. From the ionization signal a gradient is formed during the change. If the gradient exceeds a certain gradient or if the gradient rises disproportionately in comparison with the previous course, then the emaciation is ended and the fuel gas-air mixture is enriched in a defined manner.
  • the measurement signal is highly dependent on deposits on the electrode as well as the position of the electrode. Therefore, it is not appropriate to use exceeding or falling below a certain absolute value as a relevant event.
  • the sharp increase in the gradient is a sure sign that the flame will soon lift off as the proportion of air increases further.
  • the gradient can be determined by dividing the difference signal of the ionization electrode with the differential speed of the fan motor.
  • a division of the difference signal of the ionization with the difference position of the actuator of a gas valve or a differential time unit can be done.
  • the signal of the ionization electrode can be detected by serially connecting a constant voltage source to the flame of the burner and a resistor, and measuring the voltage drop across the resistor.
  • FIG. 1 shows a burner 1 with blower 8 with blower motor 9 in an air inlet 12.
  • air inlet 12 opens a gas line 13, in which a gas valve 10 with actuator 11 is located.
  • the blower motor 9 and the actuator 11 are connected to a controller 7.
  • the burner 1 is a flame 2, in which an ionization electrode 3 protrudes.
  • the ionization electrode 3 is connected to a voltage source 4. This is connected to its second electrode with a resistor 5, which in turn is connected to the burner 1. Parallel to the resistor 5, a voltmeter 6 is connected, which is connected to the controller 7.
  • the fan 8 sucks in combustion air via the air inlet 12.
  • the speed n of the fan 8 can be adjusted continuously.
  • the gas valve 10 the amount of fuel gas supplied, which flows in via the gas line 13, can be changed continuously; In this case, the number of steps n s of the actuator 11 is detected.
  • fuel gas and air are mixed with each other and ignited at the outlet of the burner 1, so that a flame 2 is formed. Since the ions of the flame 2 are electrically conductive, a current can flow between the ionization electrode 3 and the burner 1. It follows that an electrical voltage U Flame is applied. The flow of ions through the flame 2 ensures that the electrical circuit (burner 1, ionization electrode 3, voltage source 4, resistor 5) is closed.
  • FIG. 2 shows the course of the measured at the resistor 5 voltage U on the air ratio ⁇ and the fan speed n.
  • the burner 1 first runs with a previously unknown excess of air.
  • the speed n of the blower 8 is increased.
  • the air ratio ⁇ increases.
  • the voltage drop U across the resistor 5 is measured continuously over the time t and passed on to the controller 7.
  • the gradient ⁇ U / ⁇ n is calculated, where n is the speed of the fan 8. If the gradient ⁇ U / ⁇ n increases excessively after a certain point, this is an indication that soon the flame will lift off and thus break off.
  • the air ratio ⁇ is then about 1.6. Starting from this point, the rotational speed n of the fan is now deliberately reduced in such a way that an air ratio ⁇ 1.25 is established.
  • a gradient of differential voltage .DELTA.U to the differential setting position of the actuator .DELTA.n S can also be formed if a reduction of the fuel gas quantity is undertaken instead of an increase in the fan speed.
  • a gradient of the time can also be formed with constant emaciation ( ⁇ U ⁇ ).
  • the operating state where liftoff is imminent may be determined by comparing the current gradient to at least one previous gradient, and in the event the current gradient exceeds the compare value (s) by a certain percentage, the expected state is present. For example, the lowest measured gradient can be used as comparison value. Alternatively, an absolute value can be specified.
  • the time difference or speed difference In order to eliminate the influence of signal noise (fluctuation of the measuring signal by a trend line), the time difference or speed difference must not be selected too small.
  • the voltage of the flame U flame can also be measured directly. In this case, however, the ionization voltage at stoichiometric combustion is maximum and the ionization voltage signal drops as the air ratio is increased.
  • a constant voltage U 0 and a constant current source with a constant current I 0 can be connected to the series circuit of the resistor 5 with the flame. 2 Depending on the flame resistance, a certain voltage sets.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Regulation And Control Of Combustion (AREA)
EP08012196.5A 2007-07-13 2008-07-07 Procédé de réglage du rapport air/carburant d'un brûleur fonctionnant au gaz Active EP2014985B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HRP20170996TT HRP20170996T1 (hr) 2007-07-13 2017-06-30 Postupak podešavanja omjera zrak/gorivo za plinski plamenik

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0109907A AT505442B1 (de) 2007-07-13 2007-07-13 Verfahren zur brenngas-luft-einstellung für einen brenngasbetriebenen brenner

Publications (3)

Publication Number Publication Date
EP2014985A2 true EP2014985A2 (fr) 2009-01-14
EP2014985A3 EP2014985A3 (fr) 2014-02-26
EP2014985B1 EP2014985B1 (fr) 2017-05-24

Family

ID=39790204

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Application Number Title Priority Date Filing Date
EP08012196.5A Active EP2014985B1 (fr) 2007-07-13 2008-07-07 Procédé de réglage du rapport air/carburant d'un brûleur fonctionnant au gaz

Country Status (8)

Country Link
EP (1) EP2014985B1 (fr)
AT (1) AT505442B1 (fr)
DE (1) DE102008031979A1 (fr)
DK (1) DK2014985T3 (fr)
ES (1) ES2629770T3 (fr)
HR (1) HRP20170996T1 (fr)
PL (1) PL2014985T3 (fr)
PT (1) PT2014985T (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2405198A1 (fr) * 2010-07-08 2012-01-11 Vaillant GmbH Procédé de calibration de régulation du rapport gaz combustible-air d'un brûleur à gaz combustible
WO2012041777A1 (fr) * 2010-09-29 2012-04-05 Robert Bosch Gmbh Procédés d'étalonnage, de validation et d'ajustement d'une sonde lambda
WO2012004211A3 (fr) * 2010-07-07 2013-06-27 Robert Bosch Gmbh Procédé de régulation de la combustion sur un brûleur à gaz ou au fioul
EP3290801A1 (fr) * 2016-09-02 2018-03-07 Robert Bosch GmbH Procédé de commande d'un rapport air-combustible dans un système de chauffage et unité de commande et système de chauffage
WO2020038919A1 (fr) * 2018-08-21 2020-02-27 Truma Gerätetechnik GmbH & Co. KG Dispositif chauffant et procédé destiné à régler un brûleur à gaz fonctionnant par soufflerie
CN111486473A (zh) * 2019-01-29 2020-08-04 威能有限公司 加热器、控制加热器中燃烧的方法、和执行该方法的计算机程序产品
EP3690318A3 (fr) * 2019-01-29 2020-09-30 Vaillant GmbH Procédé et dispositif de régulation d'un mélange air-gaz de combustion dans un appareil de chauffage
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
EP3825623A1 (fr) * 2019-11-20 2021-05-26 Vaillant GmbH Appareil chauffant à réglage de mode d'urgence

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2667097B1 (fr) 2012-05-24 2018-03-07 Honeywell Technologies Sarl Procédé de fonctionnement d'un brûleur à gaz
EP3477201B1 (fr) 2017-10-26 2020-05-06 Honeywell Technologies Sarl Procédé de fonctionnement d'un appareil à brûleur à gaz
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
DE102020129816A1 (de) 2020-11-12 2022-05-12 Vaillant Gmbh Anordnungen und Verfahren zum Messen einer Ionisation in einem Verbrennungsraum eines Vormisch-Brenners
IT202100032360A1 (it) * 2021-12-23 2023-06-23 Sit Spa Metodo e apparato per il monitoraggio e controllo della combustione in apparecchi bruciatori a gas combustibile

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19618573C1 (de) 1996-05-09 1997-06-26 Stiebel Eltron Gmbh & Co Kg Verfahren und Einrichtung zum Betrieb eines Gasbrenners
DE4027090C2 (de) 1990-08-28 1998-07-23 Kromschroeder Ag G Anordnung zum Überwachen einer Brennerflamme
US5971745A (en) 1995-11-13 1999-10-26 Gas Research Institute Flame ionization control apparatus and method
EP0770824B1 (fr) 1995-10-25 2000-01-26 STIEBEL ELTRON GmbH & Co. KG Procédé et circuit pour commander un brûleur à gaz
EP0833106B1 (fr) 1996-09-26 2001-11-14 Honeywell B.V. Procédé et dispositif d'optimisation du fonctionnement d'un brûleur à gaz
DE202004017850U1 (de) 2004-06-23 2005-07-21 Ebm-Papst Landshut Gmbh Feuerungseinrichtung
DE10200128B4 (de) 2002-01-04 2005-12-29 Fa.Josef Reichenbruch Verfahren zur Erkennung von Gasarten und Verfahren zum Betrieb einer Brennvorrichtung sowie Brennvorrichtung für die Durchführung dieser Verfahren

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4118172A (en) * 1976-10-20 1978-10-03 Battelle Development Corporation Method and apparatus for controlling burner stoichiometry
DE19839160B4 (de) * 1998-08-28 2004-12-23 Stiebel Eltron Gmbh & Co. Kg Verfahren und Schaltung zur Regelung eines Gasbrenners
NL1015797C2 (nl) * 2000-07-25 2002-01-28 Nefit Buderus B V Verbrandingsinrichting en werkwijze voor het besturen van een verbrandingsinrichting.
AT411189B (de) * 2002-01-17 2003-10-27 Vaillant Gmbh Verfahren zur regelung eines gasbrenners
US8066508B2 (en) * 2005-05-12 2011-11-29 Honeywell International Inc. Adaptive spark ignition and flame sensing signal generation system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4027090C2 (de) 1990-08-28 1998-07-23 Kromschroeder Ag G Anordnung zum Überwachen einer Brennerflamme
EP0770824B1 (fr) 1995-10-25 2000-01-26 STIEBEL ELTRON GmbH & Co. KG Procédé et circuit pour commander un brûleur à gaz
US5971745A (en) 1995-11-13 1999-10-26 Gas Research Institute Flame ionization control apparatus and method
DE19618573C1 (de) 1996-05-09 1997-06-26 Stiebel Eltron Gmbh & Co Kg Verfahren und Einrichtung zum Betrieb eines Gasbrenners
EP0833106B1 (fr) 1996-09-26 2001-11-14 Honeywell B.V. Procédé et dispositif d'optimisation du fonctionnement d'un brûleur à gaz
DE10200128B4 (de) 2002-01-04 2005-12-29 Fa.Josef Reichenbruch Verfahren zur Erkennung von Gasarten und Verfahren zum Betrieb einer Brennvorrichtung sowie Brennvorrichtung für die Durchführung dieser Verfahren
DE202004017850U1 (de) 2004-06-23 2005-07-21 Ebm-Papst Landshut Gmbh Feuerungseinrichtung

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012004211A3 (fr) * 2010-07-07 2013-06-27 Robert Bosch Gmbh Procédé de régulation de la combustion sur un brûleur à gaz ou au fioul
EP2405198A1 (fr) * 2010-07-08 2012-01-11 Vaillant GmbH Procédé de calibration de régulation du rapport gaz combustible-air d'un brûleur à gaz combustible
WO2012041777A1 (fr) * 2010-09-29 2012-04-05 Robert Bosch Gmbh Procédés d'étalonnage, de validation et d'ajustement d'une sonde lambda
EP3290801A1 (fr) * 2016-09-02 2018-03-07 Robert Bosch GmbH Procédé de commande d'un rapport air-combustible dans un système de chauffage et unité de commande et système de chauffage
WO2020038919A1 (fr) * 2018-08-21 2020-02-27 Truma Gerätetechnik GmbH & Co. KG Dispositif chauffant et procédé destiné à régler un brûleur à gaz fonctionnant par soufflerie
AU2019325272B2 (en) * 2018-08-21 2021-11-04 Truma Gerätetechnik GmbH & Co. KG Heating device and method for regulating a fan-operated gas burner
US11761629B2 (en) 2018-08-21 2023-09-19 Truma Gerätetechnik GmbH & Co. KG Heating device and method for regulating a fan-operated gas burner
CN111486473A (zh) * 2019-01-29 2020-08-04 威能有限公司 加热器、控制加热器中燃烧的方法、和执行该方法的计算机程序产品
EP3690318A3 (fr) * 2019-01-29 2020-09-30 Vaillant GmbH Procédé et dispositif de régulation d'un mélange air-gaz de combustion dans un appareil de chauffage
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
EP3825623A1 (fr) * 2019-11-20 2021-05-26 Vaillant GmbH Appareil chauffant à réglage de mode d'urgence

Also Published As

Publication number Publication date
EP2014985A3 (fr) 2014-02-26
HRP20170996T1 (hr) 2017-12-15
AT505442B1 (de) 2009-07-15
PL2014985T3 (pl) 2017-09-29
DE102008031979A1 (de) 2009-01-15
DK2014985T3 (en) 2017-07-24
AT505442A1 (de) 2009-01-15
ES2629770T3 (es) 2017-08-14
PT2014985T (pt) 2017-07-13
EP2014985B1 (fr) 2017-05-24

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