EP1215440A2 - Method for controlling gas burners - Google Patents

Method for controlling gas burners Download PDF

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Publication number
EP1215440A2
EP1215440A2 EP01129735A EP01129735A EP1215440A2 EP 1215440 A2 EP1215440 A2 EP 1215440A2 EP 01129735 A EP01129735 A EP 01129735A EP 01129735 A EP01129735 A EP 01129735A EP 1215440 A2 EP1215440 A2 EP 1215440A2
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EP
European Patent Office
Prior art keywords
burner
gas
slew rate
ionization signal
measured
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Granted
Application number
EP01129735A
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German (de)
French (fr)
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EP1215440B1 (en
EP1215440A3 (en
Inventor
Piet Blaauwwiekel
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Garrett Motion SARL
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Honeywell BV
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Publication of EP1215440A2 publication Critical patent/EP1215440A2/en
Publication of EP1215440A3 publication Critical patent/EP1215440A3/en
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Publication of EP1215440B1 publication Critical patent/EP1215440B1/en
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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 control method for gas burners according to the preamble of Claim 1.
  • Control procedures for gas burners are used to provide a gas / air mixture, that is, supplying a gas stream and a combustion air stream to a burner.
  • the gas burner To inside the gas burner for optimal and complete combustion of the To provide fuel, namely the gas, the gas burner must be equipped accordingly coordinated gas / air mixture can be supplied.
  • the ratio between the gas flow and the combustion air flow or the gas pressure and the combustion air pressure is called the gear ratio.
  • the quality of the gas provided by the gas supply - the quality of Gas is defined by a so-called Wobbe index - fluctuates, has to Ensuring an optimal and complete combustion of the gas / air mixture in Depending on the quality of the gas can be varied accordingly.
  • the present invention is based on the problem of a to provide improved control method for gas burners. According to the invention Problem solved by a control method with the features of claim 1.
  • the control process for gas burners involves the provision of a gas / air mixture for a burner.
  • the burner is a gas stream and a Combustion air flow supplied.
  • the ratio between gas flow and Combustion air flow or the relationship between gas pressure and combustion air pressure is called the gear ratio.
  • the combustion process in the Burner monitors.
  • Information about the. Can be obtained from the ionization signal Combustion process and thus be obtained on the existing gas quality.
  • the Ionization signal is only in an area near a burner full load operation to set the gear ratio depending on the Gas quality used. This range is preferably between 70% and 100% of the Burner full load operation, but can also between 60% and 100% of Burner full load operation. Outside the above range the gas / air mixture regulated depending on the previously determined transmission ratio.
  • Burner gear ratio with in particular 70% to 100% of the burner at full load driven and during this operation with the help of an ionization signal a transmission ratio taking into account the existing gas quality is determined. As soon as the working state of the burner ranges in particular from 70% to 100% of the burner at full load leaves, the gas / air mixture while maintaining the last certain transmission ratio regulated.
  • a reference slew rate for the Ionization signal determined.
  • This reference slew rate is for a burner with predetermined burner conditions, in particular at a predetermined temperature and Burner downtime, determined and saved.
  • the current rate of rise of the ionization signal measured, namely when the Burner when starting due to a heat request the predetermined Has burner conditions.
  • This measured rate of increase is measured with the Reference slew rate compared, and then when the measured Slew rate from the reference slew rate by a predetermined one Dimension deviates, a new gear ratio is set.
  • the burner operated in the vicinity of a burner at full load. Should it not be possible to To operate the burner in the vicinity of the burner at full load, an alternative can also be used Maintenance indicator can be activated to show an operator the change.
  • the above method can still be improved may have a burner reference start defined from certain burner conditions.
  • the scheme states that the burner will not for a predetermined period of time was operated - so-called downtime - and all temperatures - e.g. Water temperatures of a boiler to be operated by the burner - below one specified value, the burner should first be on for a specified period of time a predetermined value of burner full load operation, e.g. 75% of the burner at full load, operated before regulated depending on the heat requirement becomes.
  • the invention relates to a control method for gas burners for providing a Gas / air mixture.
  • the rate of increase of the Ionization signal measured.
  • This measured rate of increase is measured with a Reference slew rate for the ionization signal compared, and then when the measured slew rate from the reference slew rate by one a predetermined dimension deviates, a new gear ratio is set.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Gas Burners (AREA)

Abstract

Regulation of the fuel mixture ratio for a gas burner in which, during burner start-up, the rate of increase of the ionization signal is measured and compared with a reference value. When the rate of increase of the ionization signal varies by a predetermined amount from the reference value a new mixture ratio is set. The ionization signal corresponding to 70 to 100 percent loading of the gas burner is used as a reference value.

Description

Die Erfindung betrifft ein Regelungsverfahren für Gasbrenner gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a control method for gas burners according to the preamble of Claim 1.

Regelungsverfahren für Gasbrenner dienen der Bereitstellung eines Gas/Luft-Gemisches, also dem Zuführen eines Gasstroms und eines Verbrennungsluftstroms zu einem Brenner.Control procedures for gas burners are used to provide a gas / air mixture, that is, supplying a gas stream and a combustion air stream to a burner.

Um innerhalb des Gasbrenners für eine optimale und vollständige Verbrennung des Brennstoffs, nämlich des Gases, zu sorgen, muß der Gasbrenner mit einem entsprechend abgestimmten Gas/Luft-Gemisch versorgt werden. Das Verhältnis zwischen dem Gasstrom und dem Verbrennungsluftstrom bzw. dem Gasdruck und dem Verbrennungsluftdruck bezeichnet man als Übersetzungsverhältnis.To inside the gas burner for optimal and complete combustion of the To provide fuel, namely the gas, the gas burner must be equipped accordingly coordinated gas / air mixture can be supplied. The ratio between the gas flow and the combustion air flow or the gas pressure and the combustion air pressure is called the gear ratio.

Da jedoch die Qualität des von der Gasversorgung bereitgestellten Gases - die Qualität von Gas wird durch einen sogenannten Wobbe-Index definiert - schwankt, muß zur Gewährleistung einer optimalen und vollständigen Verbrennung das Gas/Luft-Gemisch in Abhängigkeit von der Qualität des Gases entsprechend variiert werden.However, since the quality of the gas provided by the gas supply - the quality of Gas is defined by a so-called Wobbe index - fluctuates, has to Ensuring an optimal and complete combustion of the gas / air mixture in Depending on the quality of the gas can be varied accordingly.

Um die Qualität des bereitgestellten Gases berücksichtigen zu können, sind aus dem Star.d der Technik Regelungsverfahren bekannt, bei denen ein Ionisationssignal eines Sensors, insbesondere einer in die Brennerflamme des Gasbrenners ragenden Meßelektrode, zur Anpassung des Gas/Luft-Gemisches an unterschiedliche Gasqualitäten verwendet wird. Diesbezüglich kann auf die DE-A-44 33 425, DE-A-39 37 290 sowie DE 195 39 568 C1 verwiesen werden. Bei den bekannten, ein Ionisationssignal verwendenden Regelungsverfahren für Gasbrenner wird das Ionisationssignal über den gesamten Arbeitsbereich bzw. Betriebsbereich des Brenners zur Anpassung des Gas/Luft-Gemisches an unterschiedliche Gasqualitäten verwendet. Bei geringen Betriebslasten des Brenners ist das Ionisationssignal jedoch stark von Außeneinflüssen abhängig und liefert demzufolge keine verlässliche Auskunft über die tatsächlich im Brenner herrschenden Verbrennungsverhältnisse. Diese Regelungsverfahren führen demzufolge zu einer instabilen und damit unzureichenden Regelung. In order to be able to take into account the quality of the gas provided, Star.d Control methods known in the art, in which an ionization signal of a sensor, in particular a measuring electrode protruding into the burner flame of the gas burner, for Adaptation of the gas / air mixture to different gas qualities is used. In this regard, DE-A-44 33 425, DE-A-39 37 290 and DE 195 39 568 C1 to get expelled. In the known, using an ionization signal Control procedure for gas burners will the ionization signal over the entire Working area or operating area of the burner for adapting the gas / air mixture used for different gas qualities. At low burner operating loads however, the ionization signal is strongly dependent on external influences and consequently delivers no reliable information about the actually prevailing in the burner Combustion conditions. These regulatory procedures therefore lead to a unstable and therefore inadequate regulation.

Um für eine stabile Regelung zu sorgen, ist es aus DE-C-198 24 523 bekannt, das Ionisationssignal ausschließlich in einem Bereich in der Nähe eines Brenner-Vollastbetriebs zur Einstellung des Übersetzungsverhältnisses zu verwenden und außerhalb des Bereichs des Brenner-Vollastbetriebs das Gas/Luft-Gemisch in Abhängigkeit dieses Übersetzungsverhältnisses zu regeln. Wird jedoch der Brenner längere Zeit nicht in der Nähe eines Brenner-Vollastbetriebs einsetzt, so kann es sich ergeben, daß das während des Brenner-Vollastbetriebs eingestellte Übersetzungsverhältnisses auch keine exakte Regelung ermöglicht, da sich z.B. die Gasqualität geändert haben kann.In order to ensure stable regulation, it is known from DE-C-198 24 523 that Ionization signal only in an area near a burner at full load to use to set the gear ratio and out of range of the burner at full load, the gas / air mixture depending on this transmission ratio to regulate. However, if the burner is not near a long time Burner full load operation is used, it may result that during the burner full load operation set gear ratio also no exact regulation enabled because e.g. the gas quality may have changed.

Hiervon ausgehend liegt der vorliegenden Erfindung das Problem zugrunde, ein verbessertes Regelungsverfahren für Gasbrenner bereitzustellen. Erfindungsgemäß wird das Problem durch ein Regelungsverfahren mit den Merkmalen des Patentanspruchs 1 gelöst.Proceeding from this, the present invention is based on the problem of a to provide improved control method for gas burners. According to the invention Problem solved by a control method with the features of claim 1.

Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der Beschreibung.Preferred developments of the invention result from the subclaims and the Description.

Bei dem Regelungsverfahren für Gasbrenner geht es um die Bereitstellung eines Gas/Luft-Gemisches für einen Brenner. Hierzu wird dem Brenner ein Gasstrom und ein Verbrennungsluftstrom zugeführt. Das Verhältnis zwischen Gasstrom und Verbrennungsluftstrom bzw. das Verhältnis zwischen Gasdruck und Verbrennungsluftdruck bezeichnet man als Übersetzungsverhältnis.The control process for gas burners involves the provision of a gas / air mixture for a burner. For this, the burner is a gas stream and a Combustion air flow supplied. The ratio between gas flow and Combustion air flow or the relationship between gas pressure and combustion air pressure is called the gear ratio.

Mit Hilfe eines ein Ionisationssignal erzeugenden Sensors wird der Verbrennungsprozeß im Brenner überwacht. Aus dem Ionisationssignal können Informationen über den Verbrennungsprozeß und somit über die vorhandene Gasqualität gewonnen werden. Das Ionisationssignal wird ausschließlich in einem Bereich in der Nähe eines Brenner-Vollastbetriebs zur Einstellung des Übersetzungsverhältnisses in Abhängigkeit der Gasqualität verwendet. Dieser Bereich liegt vorzugsweise zwischen 70% und 100% des Brenner-Vollastbetriebs, kann jedoch auch zwischen 60% und 100% des Brennervollastbetriebs liegen. Außerhalb des obengenannten Bereichs wird das Gas/Luft-Gemisch in Abhängigkeit des zuvor bestimmten Übersetzungsverhältnisses geregelt.With the help of a sensor generating an ionization signal, the combustion process in the Burner monitors. Information about the. Can be obtained from the ionization signal Combustion process and thus be obtained on the existing gas quality. The Ionization signal is only in an area near a burner full load operation to set the gear ratio depending on the Gas quality used. This range is preferably between 70% and 100% of the Burner full load operation, but can also between 60% and 100% of Burner full load operation. Outside the above range the gas / air mixture regulated depending on the previously determined transmission ratio.

Es wird demnach zur Bestimmung eines die Gasqualität berücksichtigenden Übersetzungsverhältnisses der Brenner mit insbesondere 70% bis 100% des Brenner-Vollastbetriebs gefahren und während dieses Betriebs wird mit Hilfe eines Ionisationssignals ein die vorhandene Gasqualität berücksichtigendes Übersetzungsverhältnis ermittelt. Sobald der Arbeitszustand des Brenners den Bereich von insbesondere 70% bis 100% des Brenner-Vollastbetriebs verläßt, wird das Gas/Luft-Gemisch unter Beibehaltung des zuletzt bestimmten Übersetzungsverhältnisses geregelt. It is accordingly used to determine the gas quality Burner gear ratio with in particular 70% to 100% of the burner at full load driven and during this operation with the help of an ionization signal a transmission ratio taking into account the existing gas quality is determined. As soon as the working state of the burner ranges in particular from 70% to 100% of the burner at full load leaves, the gas / air mixture while maintaining the last certain transmission ratio regulated.

Ist jedoch der Brenner längere Zeit nicht in der Nähe eines Brenner-Vollastbetriebs einsetzt worden, so kann es sich ergeben, daß das während des Brenner-Vollastbetriebs eingestellte Übersetzungsverhältnisses keine exakte Regelung ermöglicht, da sich z.B. die Gasqualität geändert haben kann.However, if the burner has not been used near a burner full load for a long time , it may result that the one set during burner full load operation Transmission ratio does not allow exact regulation, because e.g. the gas quality may have changed.

Erfindungsgemäß wird daher eine Referenz-Anstiegsgeschwindigkeit für das Ionisationssignal bestimmt. Diese Referenz-Anstiegsgeschwindigkeit wird für einen Brenner mit vorbestimmten Brennerbedingungen, insbesondere bei vorbestimmter Temperatur und Stillstandszeit des Brenners, ermittelt und gespeichert. Beim Starten des Brenners wird die aktuelle Anstiegsgeschwindigkeit des Ionisationssignals gemessen, und zwar dann, wenn der Brenners beim Starten infolge einer Wärmeanforderung die vorbestimmten Brennerbedingungen aufweist. Diese gemessene Anstiegsgeschwindigkeit wird mit der Referenz-Anstiegsgeschwindigkeit verglichen, und dann, wenn die gemessene Anstiegsgeschwindigkeit von der Referenz-Anstiegsgeschwindigkeit um ein vorbestimmtes Maß abweicht, wird ein neues Übersetzungsverhältnis eingestellt. Hierzu wird der Brenner in der Nähe eines Brenner-Vollastbetriebs betrieben. Sollte es nicht möglich sein, den Brenner in der Nähe des Brenner-Vollastbetriebs zu betrieben, so kann alternativ auch eine Wartungsanzeige aktiviert werden, um einer Bedienperson die Veränderung anzuzeigen.According to the invention, a reference slew rate for the Ionization signal determined. This reference slew rate is for a burner with predetermined burner conditions, in particular at a predetermined temperature and Burner downtime, determined and saved. When the burner starts, the current rate of rise of the ionization signal measured, namely when the Burner when starting due to a heat request the predetermined Has burner conditions. This measured rate of increase is measured with the Reference slew rate compared, and then when the measured Slew rate from the reference slew rate by a predetermined one Dimension deviates, a new gear ratio is set. For this, the burner operated in the vicinity of a burner at full load. Should it not be possible to To operate the burner in the vicinity of the burner at full load, an alternative can also be used Maintenance indicator can be activated to show an operator the change.

An dieser Stelle sei angemerkt, daß das obige Verfahren noch dadurch verbessert werden kann, daß ein Referenzstart des Brenners aus gewissen Brennerbedingungen definiert wird. Stellt z.B. die Regelung fest, daß der Brenner für eine vorbestimmte Zeitdauer nicht betrieben wurde - sogenannte Stillstandszeit - und alle Temperaturen - z.B. Wassertemperaturen eines vom Brenner zu betreibenden Boilers - unter einem vorgegebenem Wert liegen, so sollte der Brenner zuerst für eine vorgegebene Zeitdauer auf einen vorbestimmten Wert des Brenner-Vollastbetriebs, z.B. 75% des Brenner-Vollastbetriebs, betrieben werden, bevor abhängig von der Wärmeanforderung geregelt wird.At this point it should be noted that the above method can still be improved may have a burner reference start defined from certain burner conditions. For example, the scheme states that the burner will not for a predetermined period of time was operated - so-called downtime - and all temperatures - e.g. Water temperatures of a boiler to be operated by the burner - below one specified value, the burner should first be on for a specified period of time a predetermined value of burner full load operation, e.g. 75% of the burner at full load, operated before regulated depending on the heat requirement becomes.

Die Erfindung betrifft ein Regelungsverfahren für Gasbrenner zur Bereitstellung eines Gas/Luft-Gemisches.The invention relates to a control method for gas burners for providing a Gas / air mixture.

Erfindungsgemäß wird beim Starten des Brenners die Anstiegsgeschwindigkeit des Ionisationssignals gemessen. Diese gemessene Anstiegsgeschwindigkeit wird mit einer Referenz-Anstiegsgeschwindigkeit für das Ionisationssignal verglichen, und dann, wenn die gemessene Anstiegsgeschwindigkeit von der Referenz-Anstiegsgeschwindigkeit um ein vorbestimmtes Maß abweicht, wird ein neues Übersetzungsverhältnis eingestellt.According to the invention, the rate of increase of the Ionization signal measured. This measured rate of increase is measured with a Reference slew rate for the ionization signal compared, and then when the measured slew rate from the reference slew rate by one a predetermined dimension deviates, a new gear ratio is set.

Claims (6)

Regelungsverfahren für Gasbrenner zur Bereitstellung eines Gas/Luft-Gemisches, nämlich zum Zuführen eines Gasstroms und eines Verbrennungsluftstroms zu einem Brenner, wobei ein Ionisationssignal eines Sensors verwendet wird um das Gas/Luft-Gemisch an unterschiedliche Gasqualitäten anzupassen, wobei das Ionisationssignal ausschließlich in einem Bereich in der Nähe eines Brenner-Vollastbetriebs zur Einstellung eines Übersetzungsverhältnisses verwendet wird, und wobei außerhalb des Bereichs des Brenner-Vollastbetriebs das Gas/Luft-Gemisch in Abhängigkeit dieses Übersetzungsverhältnisses geregelt wird, dadurch gekennzeichnet, daß a) beim Starten des Brenners die Anstiegsgeschwindigkeit des Ionisationssignals gemessen wird, b) die gemessene Anstiegsgeschwindigkeit mit einer Referenz-Anstiegsgeschwindigkeit für das Ionisationssignal verglichen wird, c) dann, wenn die gemessene Anstiegsgeschwindigkeit von der Referenz-Anstiegsgeschwindigkeit um ein vorbestimmtes Maß abweicht, ein neues Übersetzungsverhältnis eingestellt wird. Control method for gas burners for providing a gas / air mixture, namely for supplying a gas stream and a combustion air stream to a burner, wherein an ionization signal from a sensor is used to adapt the gas / air mixture to different gas qualities, the ionization signal only in one area is used in the vicinity of a burner full-load operation to set a transmission ratio, and wherein the gas / air mixture is regulated as a function of this transmission ratio outside the range of the burner full-load operation, characterized in that a) the slew rate of the ionization signal is measured when the burner is started, b) the measured slew rate is compared with a reference slew rate for the ionization signal, c) If the measured slew rate deviates from the reference slew rate by a predetermined amount, a new transmission ratio is set. Regelungsverfahren für Gasbrenner nach Anspruch 1, dadurch gekennzeichnet, daß die Referenz-Anstiegsgeschwindigkeit für einen Brenner mit vorbestimmten Brennerbedingungen, insbesondere bei vorbestimmter Temperatur und Stillstandszeit des Brenners, ermittelt und gespeichert wird.Control method for gas burners according to claim 1, characterized in that the reference slew rate for a burner with predetermined burner conditions, in particular at a predetermined temperature and downtime of the burner, is determined and stored. Regelungsverfahren für Gasbrenner nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß dann, wenn der Brenner beim Starten infolge einer Wärmeanforderung die vorbestimmten Brennerbedingungen aufweist, die Anstiegsgeschwindigkeit gemessen und mit einer Referenz-Anstiegsgeschwindigkeit verglichen wird.Control method for gas burners according to claim 1 or 2, characterized in that when the burner has the predetermined burner conditions when starting as a result of a heat request, the slew rate is measured and compared with a reference slew rate. Regelungsverfahren für Gasbrenner nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß dann, wenn die gemessene Anstiegsgeschwindigkeit von der Referenz-Anstiegsgeschwindigkeit um ein vorbestimmtes Maß abweicht, der Brenner zur Einstellung eines neuen Übersetzungsverhältnisses in der Nähe eines Brenner-Vollastbetriebs betrieben wird. Control method for gas burners according to one or more of claims 1 to 3, characterized in that when the measured slew rate deviates from the reference slew rate by a predetermined amount, the burner is operated in the vicinity of a burner full load operation to set a new transmission ratio , Regelungsverfahren für Gasbrenner nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß dann, wenn die gemessene Anstiegsgeschwindigkeit von der Referenz-Anstiegsgeschwindigkeit um ein vorbestimmtes Maß abweicht und der Brenner zur Einstellung eines neuen Übersetzungsverhältnisses nicht in der Nähe eines Brenner-Vollastbetriebs betrieben werden kann, eine Wartungsanzeige aktiviert wird.Control method for gas burners according to one or more of claims 1 to 3, characterized in that when the measured slew rate deviates from the reference slew rate by a predetermined amount and the burner is not operated in the vicinity of a burner full load operation to set a new transmission ratio a maintenance indicator is activated. Regelungsverfahren für Gasbrenner nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Ionisationssignal in einem Bereich von 70% bis 100% des Brenner-Vollastbetriebs zur Einstellung eines Übersetzungsverhältnisses verwendet wird.Control method for gas burners according to one or more of claims 1 to 5, characterized in that the ionization signal is used in a range from 70% to 100% of the burner at full load for setting a transmission ratio.
EP01129735A 2000-12-15 2001-12-13 Method for controlling gas burners Expired - Lifetime EP1215440B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10062844 2000-12-15
DE10062844A DE10062844B4 (en) 2000-12-15 2000-12-15 Control method for gas burners

Publications (3)

Publication Number Publication Date
EP1215440A2 true EP1215440A2 (en) 2002-06-19
EP1215440A3 EP1215440A3 (en) 2004-06-30
EP1215440B1 EP1215440B1 (en) 2006-06-14

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EP01129735A Expired - Lifetime EP1215440B1 (en) 2000-12-15 2001-12-13 Method for controlling gas burners

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EP (1) EP1215440B1 (en)
AT (1) ATE330180T1 (en)
DE (2) DE10062844B4 (en)
DK (1) DK1215440T3 (en)
ES (1) ES2266080T3 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3937290A1 (en) 1988-11-10 1990-05-17 Vaillant Joh Gmbh & Co METHOD AND DEVICE FOR PRODUCING A FUEL-COMBUSTION AIR MIXTURE TO BE COMBUSED FOR COMBUSTION
DE4433425A1 (en) 1994-09-20 1996-03-21 Stiebel Eltron Gmbh & Co Kg Control appts. for adjusting gas to air mixture in gas burner esp. gas torch burner
DE19539568C1 (en) 1995-10-25 1997-06-19 Stiebel Eltron Gmbh & Co Kg Gas burner regulation system
DE19824523A1 (en) 1998-06-02 1999-12-09 Honeywell Bv Control procedures for gas burners

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19831648B4 (en) * 1998-07-15 2004-12-23 Stiebel Eltron Gmbh & Co. Kg Process for the functional adaptation of control electronics to a gas heater

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3937290A1 (en) 1988-11-10 1990-05-17 Vaillant Joh Gmbh & Co METHOD AND DEVICE FOR PRODUCING A FUEL-COMBUSTION AIR MIXTURE TO BE COMBUSED FOR COMBUSTION
DE4433425A1 (en) 1994-09-20 1996-03-21 Stiebel Eltron Gmbh & Co Kg Control appts. for adjusting gas to air mixture in gas burner esp. gas torch burner
DE19539568C1 (en) 1995-10-25 1997-06-19 Stiebel Eltron Gmbh & Co Kg Gas burner regulation system
DE19824523A1 (en) 1998-06-02 1999-12-09 Honeywell Bv Control procedures for gas burners

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ATE330180T1 (en) 2006-07-15
EP1215440B1 (en) 2006-06-14
DE10062844B4 (en) 2005-12-15
ES2266080T3 (en) 2007-03-01
DK1215440T3 (en) 2006-09-04
EP1215440A3 (en) 2004-06-30
DE50110141D1 (en) 2006-07-27
DE10062844A1 (en) 2002-07-11

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