EP1460338A1 - Circuit arrangement for determining the flame current of a burner - Google Patents

Circuit arrangement for determining the flame current of a burner Download PDF

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Publication number
EP1460338A1
EP1460338A1 EP04006848A EP04006848A EP1460338A1 EP 1460338 A1 EP1460338 A1 EP 1460338A1 EP 04006848 A EP04006848 A EP 04006848A EP 04006848 A EP04006848 A EP 04006848A EP 1460338 A1 EP1460338 A1 EP 1460338A1
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EP
European Patent Office
Prior art keywords
flame current
circuit arrangement
flame
measuring device
ground potential
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Granted
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EP04006848A
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German (de)
French (fr)
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EP1460338B1 (en
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Derk Vegter
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Honeywell BV
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Honeywell BV
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    • 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
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/16—Measuring bridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors

Definitions

  • the invention relates to a circuit arrangement for determining the flame current of a burner with the aid of a flame rod.
  • EP 0 867 661 shows a flame monitor, the flame of which is monitored with the aid of a flame rod.
  • This flame monitor takes advantage of the rectifier property of the flame.
  • the flame rod is supplied with an alternating voltage via a capacitor and a resistor network, whereas the burner or the burner nozzle is grounded. Another output of the resistor network is connected to an amplifier. If, due to an existing flame, a half-wave of the AC voltage flows off via the flame, an output signal indicating the flame is generated at the output of the flame amplifier. When the flame is terminated, an alternating voltage is supplied to the flame amplifier, so that a correspondingly different signal is generated at its output that reliably indicates that a flame does not exist.
  • Another flame guard of this type is known from EP 0 498 619 A2. This flame monitor is also not intended for quantitative measurement of the flame current.
  • the invention is based on the object of specifying a circuit arrangement for determining the flame current of a burner, which enables reliable determination of the flame current.
  • the circuit arrangement according to claim 1 accordingly comprises, in addition to a measuring device for determining a flame current using a high-frequency excitation voltage, the flame current being determined at least once with the excitation voltage switched off and at least once with the excitation voltage switched on.
  • the two flame flows determined here are subtracted from one another. This reduces the interference on the measurement result. This measure also ensures fail-safe behavior since the result would automatically be zero if the measurement arrangement failed.
  • the circuit arrangement is advantageously designed such that the comparison device activates the measuring device for determining the flame current when the ground potential approaches the ground potential. This is usually the case after 20 milliseconds because of the commonly used frequency of 50 Hz.
  • the measuring device can also continuously determine the flame current. Then, however, it must be ensured by the comparison device that the result of the determination is only output if the ground potential corresponds to the earth potential.
  • the measuring device is advantageously suitable for determining the level of the flame current.
  • the exact size of the flame current is determined, for example, using a high-frequency excitation voltage.
  • a non-grounded center also means a center that has no low-resistance connection to the earth, but is also not isolated from it, so that there is a high-resistance connection.
  • 1 is a measuring device
  • 2 is a comparison device
  • 3 is a voltage supply device
  • 4 is a connection for a flame rod
  • 5 is a connection for a burner or a burner nozzle
  • 6 is the ground potential
  • 7 is the earth potential
  • 8 an output connection of the measuring device and 9 denotes a supply voltage connection of the voltage supply device 3.
  • the two supply voltage connections 9 of the voltage supply device 3 are each to be connected to a phase of the three-phase network in the case of a voltage supply from a network with an ungrounded center.
  • the voltage supply connections 9 can be connected to a phase conductor and a neutral conductor.
  • the voltage supply device 3 supplies the connection 4 for the flame rod or the measuring device 1 with an alternating voltage which has the frequency of the three-phase network or twice the frequency. A supply with a higher frequency is also possible.
  • the voltage supply device is used to supply voltage to the measuring device 1 and the comparison device 2 via leads, not shown in the figure.
  • the voltage supply device 3 generates Furthermore, the ground potential 6, which is also fed to the comparison device 2.
  • the ground potential 6 can also be fed to the measuring device 1 via a feed line, not shown in the figure.
  • a part of the voltage supply device 3 for supplying voltage to the flame rod 4 can be designed as specified in EP 0 867 661.
  • the measuring device 1 comprises at least one measuring amplifier and is designed such that it outputs a signal at its output connection 8 which is proportional to the level of the flame current. If the measuring device is designed in digital form, this can be a digital or analog signal, whereas if the measuring device is designed as a purely analog measuring device, it is an analog signal.
  • the comparison device 2 comprises at least one comparator which e.g. can be formed by an operational amplifier. One connection of this comparator is connected to the earthed burner or the earthed burner nozzle, whereas another connection of this comparator is connected to the ground potential provided by the voltage supply device. This enables the comparison device 2 to output an output signal which indicates whether the ground potential just corresponds to the ground potential or not. This output signal is fed to the measuring device 1.
  • This comparator e.g. can be formed by an operational amplifier.
  • One connection of this comparator is connected to the earthed burner or the earthed burner nozzle, whereas another connection of this comparator is connected to the ground potential provided by the voltage supply device. This enables the comparison device 2 to output an output signal which indicates whether the ground potential just corresponds to the ground potential or not. This output signal is fed to the measuring device 1.
  • the measuring device can be activated by the output signal of the comparison device for measuring the flame current.
  • the measuring device 1 can also continuously determine the flame current, but can only output it when the comparison device determines that the ground potential corresponds to the earth potential.
  • the measuring device can either forward the measurement signal determined in this way to the output connection 8 only if the ground potential corresponds to the earth potential or only change the output signal output to the output connection 8 if it no longer corresponds to the previously determined one and the ground potential corresponds to the earth potential ,
  • the circuit device shown is designed to determine the flame current when the power supply device is supplied from a three-phase network without a grounded center, but can advantageously also be used at the same time when the power supply device is supplied from a three-phase network with a grounded center.

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

Abstract

A measurement unit (1) determined the flame current, using a high frequency measurement potential. The flame current is measured once with the measurement potential switched on, and once with it switched off. The results are subtracted.

Description

Die Erfindung bezieht sich auf eine Schaltungsanordnung zur Ermittlung des Flammenstromes eines Brenners mit Hilfe eines Flammenstabes.The invention relates to a circuit arrangement for determining the flame current of a burner with the aid of a flame rod.

Die EP 0 867 661 zeigt einen Flammenwächter, dessen Flamme mit Hilfe eines Flammenstabes überwacht wird. Dieser Flammenwächter macht sich die Gleichrichtereigenschaft der Flamme zunutze. Der Flammenstab wird über einen Kondensator und ein Widerstandsnetzwerk mit einer Wechselspannung versorgt, wohingegen der Brenner bzw. die Brennerdüse geerdet ist. Ein anderer Ausgang des Widerstandsnetzwerkes ist mit einem Verstärker verbunden. Fließt auf Grund einer vorhandenen Flamme eine Halbwelle der Wechselspannung über die Flamme ab, entsteht am Ausgang des Flammenverstärkers ein die Flamme anzeigendes Ausgangssignal. Bei Abbruch der Flamme wird dem Flammenverstärker eine Wechselspannung zugeführt, so dass an dessen Ausgang ein entsprechend anderes Signal entsteht, dass das Nicht-Bestehen einer Flamme zuverlässig anzeigt.EP 0 867 661 shows a flame monitor, the flame of which is monitored with the aid of a flame rod. This flame monitor takes advantage of the rectifier property of the flame. The flame rod is supplied with an alternating voltage via a capacitor and a resistor network, whereas the burner or the burner nozzle is grounded. Another output of the resistor network is connected to an amplifier. If, due to an existing flame, a half-wave of the AC voltage flows off via the flame, an output signal indicating the flame is generated at the output of the flame amplifier. When the flame is terminated, an alternating voltage is supplied to the flame amplifier, so that a correspondingly different signal is generated at its output that reliably indicates that a flame does not exist.

Ein weiterer Flammenwächter dieser Art ist aus der EP 0 498 619 A2 bekannt. Auch dieser Flammenwächter ist nicht zur quantitativen Messung des Flammenstromes bestimmt.Another flame guard of this type is known from EP 0 498 619 A2. This flame monitor is also not intended for quantitative measurement of the flame current.

Der Erfindung liegt demgegenüber die Aufgabe zugrunde, eine Schaltungsanordnung zur Ermittlung des Flammenstromes eines Brenners anzugeben, die eine zuverlässige Ermittlung des Flammenstromes ermöglicht.In contrast, the invention is based on the object of specifying a circuit arrangement for determining the flame current of a burner, which enables reliable determination of the flame current.

Diese Aufgabe wird durch eine Schaltungsanordnung mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved by a circuit arrangement with the features of patent claim 1.

Die Schaltungsanordnung gemäß Patentanspruch 1 umfasst demzufolge neben einer Messeinrichtung zur Ermittlung eines Flammenstromes mit Hilfe einer hochfrequenten Erregerspannung, wobei die Ermittlung des Flammenstromes zumindest einmal mit ausgeschalteter und zumindest einmal mit eingeschalteter Erregerspannung erfolgt. Die beiden hierbei ermittelten Flammenströme werden voneinander abgezogen. Hierdurch reduzieren sich die Störeinflüsse auf das Messergebnis. Auch wird durch diese Maßnahme ein Fail-Safe-Verhalten sichergestellt, da bei einem Ausfall der Messanordnung das Ergebnis automatisch Null wäre.The circuit arrangement according to claim 1 accordingly comprises, in addition to a measuring device for determining a flame current using a high-frequency excitation voltage, the flame current being determined at least once with the excitation voltage switched off and at least once with the excitation voltage switched on. The two flame flows determined here are subtracted from one another. This reduces the interference on the measurement result. This measure also ensures fail-safe behavior since the result would automatically be zero if the measurement arrangement failed.

Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous developments of the invention are the subject of the dependent claims.

Vorteilhafterweise ist die Schaltungsanordnung derart ausgelegt, dass die Vergleichseinrichtung die Messeinrichtung zur Ermittlung des Flammenstromes dann aktiviert, wenn sich das Massepotential an das Erdpotential annähert. Dies ist wegen der üblicherweise verwendeten Frequenz von 50 Hz normalerweise nach 20 Millisekunden der Fall.The circuit arrangement is advantageously designed such that the comparison device activates the measuring device for determining the flame current when the ground potential approaches the ground potential. This is usually the case after 20 milliseconds because of the commonly used frequency of 50 Hz.

Alternativ hierzu kann die Messeinrichtung den Flammenstrom auch kontinuierlich ermitteln. Dann muss aber durch die Vergleichseinrichtung sichergestellt werden, dass das Ermittlungsergebnis nur dann ausgegeben wird, wenn das Massepotential dem Erdpotential entspricht.Alternatively, the measuring device can also continuously determine the flame current. Then, however, it must be ensured by the comparison device that the result of the determination is only output if the ground potential corresponds to the earth potential.

Die Messeinrichtung ist vorteilhafter Weise zur Ermittlung der Höhe des Flammenstroms geeignet. Die genaue Größe des Flammenstroms ermittelt sie dabei beispielsweise anhand einer hochfrequenten Erregerspannung.The measuring device is advantageously suitable for determining the level of the flame current. The exact size of the flame current is determined, for example, using a high-frequency excitation voltage.

Die Erfindung wird nachfolgend anhand der Figur näher erläutert.The invention is explained in more detail below with reference to the figure.

Ein nicht geerdeter Mittelpunkt bedeutet im weiteren einen Mittelpunkt, der keine niederohmige Verbindung mit der Erde aufweist, von dieser aber auch nicht isoliert ist, so dass eine hochohmige Verbindung besteht.A non-grounded center also means a center that has no low-resistance connection to the earth, but is also not isolated from it, so that there is a high-resistance connection.

In der Figur ist mit 1 eine Messeinrichtung mit 2 eine Vergleichseinrichtung, mit 3 eine Spannungsversorgungseinrichtung, mit 4 ein Anschluss für einen Flammenstab, mit 5 ein Anschluss für einen Brenner bzw. eine Brennerdüse, mit 6 das Massepotential, mit 7 das Erdpotential, mit 8 ein Ausgangsanschluss der Messeinrichtung und mit 9 ein Versorgungsspannungsanschluss der Spannungsversorgungseinrichtung 3 bezeichnet.In the figure, 1 is a measuring device, 2 is a comparison device, 3 is a voltage supply device, 4 is a connection for a flame rod, 5 is a connection for a burner or a burner nozzle, 6 is the ground potential, 7 is the earth potential, and 8 an output connection of the measuring device and 9 denotes a supply voltage connection of the voltage supply device 3.

Die beiden Versorgungsspannungsanschlüsse 9 der Spannungsversorgungseinrichtung 3 sind im Falle einer Spannungsversorgung aus einem Netz mit nicht geerdetem Mittelpunkt jeweils mit einer Phase des Drehstromnetzes zu verbinden. Im Falle der Spannungsversorgung aus einem Drehstromnetz mit geerdetem Mittelpunkt können die Spannungsversorgungsanschlüsse 9 mit einem Phasenleiter und einem Nulleiter verbunden werden.The two supply voltage connections 9 of the voltage supply device 3 are each to be connected to a phase of the three-phase network in the case of a voltage supply from a network with an ungrounded center. In the case of the voltage supply from a three-phase network with a grounded center, the voltage supply connections 9 can be connected to a phase conductor and a neutral conductor.

Die Spannungsversorgungseinrichtung 3 versorgt, wie im Bild gezeigt, den Anschluss 4 für den Flammenstab bzw. die Messeinrichtung 1 mit einer Wechselspannung, die die Frequenz des Drehstromnetzes oder die doppelte Frequenz aufweist. Auch eine Versorgung mit einer höheren Frequenz ist möglich.As shown in the figure, the voltage supply device 3 supplies the connection 4 for the flame rod or the measuring device 1 with an alternating voltage which has the frequency of the three-phase network or twice the frequency. A supply with a higher frequency is also possible.

Darüber hinaus dient die Spannungsversorgungseinrichtung zur Spannungsversorgung der Messeinrichtung 1 sowie der Vergleichseinrichtung 2 über in der Figur nicht gezeigte Zuleitungen. Die Spannungsversorgungseinrichtung 3 erzeugt ferner das Massepotential 6, das ebenfalls der Vergleichseinrichtung 2 zugeführt wird. Je nach Bedarf kann das Massepotential 6 ebenfalls auch der Messeinrichtung 1 über eine in der Figur nicht gezeigte Zuleitung zugeführt werden.In addition, the voltage supply device is used to supply voltage to the measuring device 1 and the comparison device 2 via leads, not shown in the figure. The voltage supply device 3 generates Furthermore, the ground potential 6, which is also fed to the comparison device 2. Depending on requirements, the ground potential 6 can also be fed to the measuring device 1 via a feed line, not shown in the figure.

Ein Teil der Spannungsversorgungseinrichtung 3 zur Spannungsversorgung des Flammenstabes 4 kann, wie in der EP 0 867 661 angegeben, ausgeführt sein.A part of the voltage supply device 3 for supplying voltage to the flame rod 4 can be designed as specified in EP 0 867 661.

Die Messeinrichtung 1 umfasst zumindest einen Messverstärker und ist derart ausgestaltet, dass sie an ihrem Ausgangsanschluss 8 ein Signal ausgibt, das zur Höhe des Flammenstromes proportional ist. Im Falle der Ausbildung der Messeinrichtung in digitaler Form kann es sich hierbei um ein digitales oder analoges Signal handeln, wohingegen es sich im Falle der Ausbildung der Messeinrichtung als rein analoge Messeinrichtung um ein analoges Signal handelt.The measuring device 1 comprises at least one measuring amplifier and is designed such that it outputs a signal at its output connection 8 which is proportional to the level of the flame current. If the measuring device is designed in digital form, this can be a digital or analog signal, whereas if the measuring device is designed as a purely analog measuring device, it is an analog signal.

Die Vergleichseinrichtung 2 umfasst zumindest einen Komparator, der z.B. durch einen Operationsverstärker gebildet werden kann. Ein Anschluss dieses Komparators ist mit dem geerdeten Brenner bzw. der geerdeten Brennerdüse verbunden, wohingegen ein anderer Anschluss dieses Komparators mit dem von der Spannungsversorgungseinrichtung bereitgestellten Massepotential verbunden ist. Hierdurch wird die Vergleichseinrichtung 2 in die Lage versetzt, ein Ausgangssignal auszugeben, das angibt, ob das Massepotential gerade dem Erdpotential entspricht oder nicht. Dieses Ausgangssignal wird der Messeinrichtung 1 zugeführt.The comparison device 2 comprises at least one comparator which e.g. can be formed by an operational amplifier. One connection of this comparator is connected to the earthed burner or the earthed burner nozzle, whereas another connection of this comparator is connected to the ground potential provided by the voltage supply device. This enables the comparison device 2 to output an output signal which indicates whether the ground potential just corresponds to the ground potential or not. This output signal is fed to the measuring device 1.

Zur Ermittlung des Flammenstromes kann die Messeinrichtung durch das Ausgangssignal der Vergleichseinrichtung zur Messung des Flammenstromes aktiviert werden.To determine the flame current, the measuring device can be activated by the output signal of the comparison device for measuring the flame current.

Alternativ hierzu kann die Messeinrichtung 1 den Flammenstrom auch kontinuierlich ermitteln, ihn aber nur dann ausgeben, wenn die Vergleichseinrichtung feststellt, dass das Massepotential dem Erdpotential entspricht. Hierbei kann die Messeinrichtung das derart ermittelte Messsignal entweder nur dann an den Ausgangsanschluss 8 weitergeben, wenn das Massepotential dem Erdpotential entspricht oder aber nur dann das an den Ausgangsanschluss 8 abgegebene Ausgangssignal ändern, wenn es nicht mehr dem zuvor ermittelten entspricht und das Massepotential dem Erdpotential entspricht.As an alternative to this, the measuring device 1 can also continuously determine the flame current, but can only output it when the comparison device determines that the ground potential corresponds to the earth potential. Here, the measuring device can either forward the measurement signal determined in this way to the output connection 8 only if the ground potential corresponds to the earth potential or only change the output signal output to the output connection 8 if it no longer corresponds to the previously determined one and the ground potential corresponds to the earth potential ,

Die gezeigte Schaltungseinrichtung ist zur Ermittlung des Flammenstromes bei Versorgung der Stromversorgungseinrichtung aus einem Drehstromnetz ohne geerdeten Mittelpunkt ausgelegt, kann vorteilhafterweise gleichzeitig aber auch bei Versorgung der Stromversorgungseinrichtung aus einem Drehstromnetz mit geerdetem Mittelpunkt verwendet werden.The circuit device shown is designed to determine the flame current when the power supply device is supplied from a three-phase network without a grounded center, but can advantageously also be used at the same time when the power supply device is supplied from a three-phase network with a grounded center.

Claims (6)

Schaltungsanordnung zur Ermittlung des Flammenstromes eines Brenners mit
   einer Messeinrichtung (1) zur Ermittlung des Flammenstromes mit Hilfe einer hochfrequenten Messspannung
   wobei der Flammenstrom einmal mit eingeschalteter Messspannung und einmal mit ausgeschalteter Messspannung ermittelt wird und die Ergebnisse voneinander abgezogen werden.Circuit arrangement for determining the flame current of a burner with
a measuring device (1) for determining the flame current with the aid of a high-frequency measuring voltage
whereby the flame current is determined once with the measuring voltage switched on and once with the measuring voltage switched off and the results are subtracted from one another. Schaltungsanordnung nach Anspruch 1, gekennzeichnet durch
   eine Vergleichseinrichtung (2) zum Vergleich des Erdpotentials (7) mit einem Massepotential (6) der Schaltungsanordnung,
   wobei eine Ermittlung des Flammenstromes erfolgt, wenn das Massepotential dem Erdpotential entspricht.Circuit arrangement according to claim 1, characterized by
a comparison device (2) for comparing the earth potential (7) with a ground potential (6) of the circuit arrangement,
the flame current is determined when the ground potential corresponds to the earth potential. Schaltungsanordnung nach Anspruch 2, dadurch gekennzeichnet, dass die Vergleichseinrichtung'die Messeinrichtung zur Ermittlung des Flammenstromes aktiviert, wenn sich das Massepotential an das Erdpotential annähert.Circuit arrangement according to claim 2, characterized in that the comparison device 'the measuring device activated to determine the flame current when the ground potential approaches the ground potential. Schaltungsanordnung nach Anspruch 2, dadurch gekennzeichnet,
   dass die Vergleichseinrichtung die Messeinrichtung zur Ein- und Ausschaltung der Messspannung synchron zur Frequenz des Masse- oder Erdpotentials veranlasst.Circuit arrangement according to claim 2, characterized in
that the comparison device causes the measuring device to switch the measuring voltage on and off synchronously with the frequency of the ground or earth potential. Schaltungsanordnung nach Anspruch 2, dadurch gekennzeichnet, dass die Messeinrichtung den Flammenstrom kontinuierlich ermittelt, das Ermittlungsergebnis aber nur dann ausgegeben wird, wenn das Massepotential dem Erdpotential entspricht.Circuit arrangement according to claim 2, characterized in that the measuring device continuously determines the flame current, but the result of the determination is only output when the ground potential corresponds to the earth potential. Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, dass die Messeinrichtung die Höhe des Flammenstromes misst.Circuit arrangement according to claim 1, characterized in that the measuring device measures the level of the flame current.
EP04006848A 2003-03-21 2004-03-22 Circuit arrangement for determining the flame current of a burner Expired - Lifetime EP1460338B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10312669A DE10312669B3 (en) 2003-03-21 2003-03-21 Circuit arrangement for determining the flame current of a burner
DE10312669 2003-03-21

Publications (2)

Publication Number Publication Date
EP1460338A1 true EP1460338A1 (en) 2004-09-22
EP1460338B1 EP1460338B1 (en) 2011-11-02

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EP04006848A Expired - Lifetime EP1460338B1 (en) 2003-03-21 2004-03-22 Circuit arrangement for determining the flame current of a burner

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EP (1) EP1460338B1 (en)
AT (1) ATE532008T1 (en)
DE (1) DE10312669B3 (en)
ES (1) ES2374180T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2495496A1 (en) * 2011-03-03 2012-09-05 Siemens Aktiengesellschaft Burner assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3059496B1 (en) 2015-02-23 2018-10-10 Honeywell Technologies Sarl Measuring arrangement for a gas burner, gas burner and method for operating the gas burner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153126A (en) * 1983-12-14 1985-08-14 Landis & Gyr Ag Self-monitoring flame monitor
US4672324A (en) * 1984-04-12 1987-06-09 U.S. Philips Corporation Flame protection circuit
US6501383B1 (en) * 1997-10-10 2002-12-31 Siemens Building Technologies Ag Method and device for monitoring a flame
EP1331446A2 (en) * 2002-01-25 2003-07-30 Honeywell B.V. Circuit arrangement for determining the flame current of a burner

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19712938C1 (en) * 1997-03-27 1998-05-14 Honeywell Bv Burner flame monitor supply voltage circuit for power plant
DE19726169C2 (en) * 1997-06-20 2003-02-27 Stiebel Eltron Gmbh & Co Kg Control device for a gas burner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153126A (en) * 1983-12-14 1985-08-14 Landis & Gyr Ag Self-monitoring flame monitor
US4672324A (en) * 1984-04-12 1987-06-09 U.S. Philips Corporation Flame protection circuit
US6501383B1 (en) * 1997-10-10 2002-12-31 Siemens Building Technologies Ag Method and device for monitoring a flame
EP1331446A2 (en) * 2002-01-25 2003-07-30 Honeywell B.V. Circuit arrangement for determining the flame current of a burner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2495496A1 (en) * 2011-03-03 2012-09-05 Siemens Aktiengesellschaft Burner assembly
US9062882B2 (en) 2011-03-03 2015-06-23 Siemens Aktiengesellschaft Burner system

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ATE532008T1 (en) 2011-11-15
EP1460338B1 (en) 2011-11-02
DE10312669B3 (en) 2004-10-21
ES2374180T3 (en) 2012-02-14

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