EP1944549B1 - Method for controlling a gas burner - Google Patents

Method for controlling a gas burner Download PDF

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Publication number
EP1944549B1
EP1944549B1 EP07025165.7A EP07025165A EP1944549B1 EP 1944549 B1 EP1944549 B1 EP 1944549B1 EP 07025165 A EP07025165 A EP 07025165A EP 1944549 B1 EP1944549 B1 EP 1944549B1
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EP
European Patent Office
Prior art keywords
gas
sensor
control
combustion air
gas burner
Prior art date
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Application number
EP07025165.7A
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German (de)
French (fr)
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EP1944549A2 (en
EP1944549A3 (en
Inventor
Derk Vegter
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Garrett Motion SARL
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Honeywell Technologies SARL
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Publication of EP1944549A2 publication Critical patent/EP1944549A2/en
Publication of EP1944549A3 publication Critical patent/EP1944549A3/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N5/184—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/12—Burner simulation or checking
    • F23N2227/16—Checking components, e.g. electronic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/18—Applying test signals, e.g. periodic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/20—Calibrating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2237/00—Controlling
    • F23N2237/24—Controlling height of burner
    • F23N2237/26—Controlling height of burner oxygen-air ratio

Definitions

  • the invention relates to a method for controlling a gas burner according to the preamble of claim 1.
  • a method for controlling a gas burner wherein a gas burner via a gas line, a gas stream and a combustion air line, a combustion air flow is supplied.
  • the gas line is a gas valve and the combustion air line is associated with a fan, wherein a sensor that provides an electrical or electronic measurement signal, on the one hand on the combustion air line and on the other hand engages the gas line.
  • the gas burner is controlled in the sense of a 1: 1 gas / air control such that the gas flow supplied to the gas burner is about the same size as the combustion gas supplied to the gas burner, in which case the sensor is not flowed through, a flow through the Sensor is thus about zero.
  • the structure of the sensor which is used to control the gas burner, is from the DE 100 56 064 A1
  • the sensor has a heating device positioned between two temperature-sensitive measuring devices. With active control, the heating device of the sensor is turned on, so that when the sensor is flowed through, depending on the flow direction of a measuring device is heated by the heater more than the other measuring device.
  • After DE 100 56 064 A1 It is also proposed to turn off the heater of the sensor to perform a sensor safety check with the gas valve closed and the fan off so as to eliminate the effect of natural flow on the sensor safety check.
  • the invention is based on the problem to provide a novel method for controlling a gas burner with increased control accuracy.
  • a method for controlling a gas burner with the features of claim 1.
  • a heating device associated with the sensor is switched off at defined time intervals for a defined period of time, whereby a measured value of the sensor is used to perform a calibration of the control in terms of a setpoint adjustment.
  • a method for controlling a gas burner is proposed, with which a setpoint adjustment of the control is performed for calibration purposes at defined time intervals.
  • a much more accurate control of a gas burner can be realized.
  • a drift in the mode of operation of the sensor adjusting over the operation of the gas burner can thus be compensated in order to ensure a consistently good quality of control.
  • the present invention relates to a method for controlling a gas burner, wherein the gas burner to be controlled, a gas / air mixture is supplied.
  • a gas stream can be fed to the gas burner via a gas line 10, at least one gas valve 11 being integrated into the gas line 10.
  • the gas line 10 opens into a combustion air line 12, via which a combustion air flow is supplied to the gas burner.
  • the combustion air line 12 is associated with a blower 13. The rotational speed of the blower 13 determines the combustion air flow.
  • a throttle point 14 is arranged, wherein the gas line 10 downstream of the throttle point 14 opens into the combustion air line 12.
  • a gas nozzle 15 closes off the gas line 10 in the region of the combustion air line 12. In the flow direction behind the gas nozzle 15 is therefore present in front of a gas / air mixture.
  • a sensor 16 which engages with a measuring point 17 on the gas line 10 with a further measuring point 18 on the combustion air line 12.
  • the sensor 16 is designed as a flowmeter or anemometer and flows depending on the flow conditions or pressure conditions in the gas line 10 and combustion air line 12. The detailed structure of the sensor 16 results from Fig. 2 ,
  • the sensor 16 generates depending on the flow through an electrical or electronic measurement signal 19, which is supplied to a control unit 20.
  • the control unit 20 compares the actual value provided by the sensor with a setpoint value, wherein an actuating signal 21 for an actuator 22 assigned to the gas valve 11 is generated as a function thereof.
  • the gas valve 11 is opened via the actuator 22 such that the gas flow corresponds to the combustion air flow, so that no flow flows through the sensor 16.
  • the sensor 16 has according to Fig. 2 via a heating device 23 which is arranged between two temperature-sensitive measuring devices 24, 25.
  • the two temperature-sensitive measuring devices 24, 25 are preferably designed as PTC elements, wherein the measuring devices 24 and 25 are coupled via resistance elements 27 and 28 to a power supply.
  • the signals provided by the temperature-sensitive measuring devices 24 and 25 are supplied to an amplifier 26, the amplifier 26 finally providing the electrical or electronic measuring signal 19 of the sensor 16.
  • either the measuring device 24 or the measuring device 25 is heated more when the heating device 23 is switched on.
  • a measured value of the sensor 16 determined here is used perform a calibration of the control in terms of a setpoint adjustment.
  • the measured value of the sensor 16 determined here is used as a new desired value and thus new control point for the 1: 1 gas / air control.
  • Fig. 3 illustrates the inventive method. So shows Fig. 3 a diagram in which on the horizontally extending axis of the flow rate ⁇ through the sensor 16 and on the vertical axis, the measuring signal U of the sensor 16 is plotted. The measurement signal U corresponds to the measurement signal 19.
  • a curve 29 shows the measurement signal U of the sensor 16 as a function of the flow rate ⁇ when the heating device of the sensor 16 is switched off; on the other hand, a curve 30 shows the measuring signal U of the sensor 16 as a function of the flow rate ⁇ when the heating device 23 is switched on.
  • the two curves 29 and 30 correspond to the behavior of a new or new sensor 16, wherein the crossing point CP 0 of the two curves 29 and 30, the target value for the 1: 1 gas / air control and thus the control point at a new or new sensor 16 corresponds.
  • the heater 23 of the sensor 16 is turned off at defined time intervals for a defined period of time, wherein a measured value of the sensor determined here is used as a new desired value for the 1: 1 gas / air control becomes.
  • This results in a convergent process which leads to a new desired value and thus control point CP NEW for the 1: 1 gas / air control for an aged sensor 16.
  • the curves 29 and 30 have shifted to the curves 29 'and 30', respectively, with the new setpoint or control point CP NEW for the control again being at the intersection of the curves 29 'and 30'. It is therefore provided an automatic calibration of the control in the sense of a setpoint adjustment for a 1: 1 gas / air control.
  • the setpoint adjustment takes place only when the measured value U of the sensor 16 determined during active control and switched-off heater 23 is within an allowable tolerance band around the output signal U of the sensor 16, which prevails in the control point CP 0 .
  • the setpoint adjustment does not take place, rather an error message is generated and the gas regulator is stopped. Only if the measured value U of the sensor is between the upper limit value and the lower limit value when the control is active and the heating device 23 is switched off is the setpoint adjustment according to the invention then carried out.

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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)

Description

Die Erfindung betrifft ein Verfahren zum Regeln eines Gasbrenners nach dem Oberbegriff des Anspruchs 1.The invention relates to a method for controlling a gas burner according to the preamble of claim 1.

Aus der DE 198 24 521 B4 ist ein Verfahren zum Regeln eines Gasbrenners bekannt, wobei einem Gasbrenner über eine Gasleitung ein Gasstrom und über eine Verbrennungsluftleitung ein Verbrennungsluftstrom zugeführt wird. Der Gasleitung ist ein Gasventil und der Verbrennungsluftleitung ist ein Gebläse zugeordnet, wobei ein Sensor, der ein elektrisches bzw. elektronisches Messsignal liefert, einerseits an der Verbrennungsluftleitung und andererseits an der Gasleitung angreift. Der Gasbrenner wird im Sinne einer 1:1-Gas/Luft-Regelung derart geregelt, dass der dem Gasbrenner zugeführte Gasstrom in etwa genauso groß ist wie der dem Gasbrenner zugeführte Verbrennungsluftstrom, wobei in diesem Fall der Sensor nicht durchströmt ist, eine Strömung durch den Sensor also in etwa Null beträgt.From the DE 198 24 521 B4 a method for controlling a gas burner is known, wherein a gas burner via a gas line, a gas stream and a combustion air line, a combustion air flow is supplied. The gas line is a gas valve and the combustion air line is associated with a fan, wherein a sensor that provides an electrical or electronic measurement signal, on the one hand on the combustion air line and on the other hand engages the gas line. The gas burner is controlled in the sense of a 1: 1 gas / air control such that the gas flow supplied to the gas burner is about the same size as the combustion gas supplied to the gas burner, in which case the sensor is not flowed through, a flow through the Sensor is thus about zero.

Der Aufbau des Sensors, der zum Regeln des Gasbrenners verwendet wird, ist aus der DE 100 56 064 A1 bekannt, wobei der Sensor eine zwischen zwei temperaturempfindlichen Messeinrichtungen positionierte Heizeinrichtung aufweist. Bei aktiver Regelung ist die Heizeinrichtung des Sensors eingeschaltet, so dass dann, wenn der Sensor durchströmt ist, abhängig von der Strömungsrichtung eine Messeinrichtung von der Heizeinrichtung stärker aufgeheizt wird als die andere Messeinrichtung. Nach der DE 100 56 064 A1 wird weiterhin vorgeschlagen, zur Ausführung eines Sensor-Sicherheitsschecks bei geschlossenem Gasventil sowie ausgeschaltetem Gebläse die Heizeinrichtung des Sensors auszuschalten, um so den Effekt einer natürlichen Strömung auf den Sensor-Sicherheitsscheck zu eliminieren.The structure of the sensor, which is used to control the gas burner, is from the DE 100 56 064 A1 The sensor has a heating device positioned between two temperature-sensitive measuring devices. With active control, the heating device of the sensor is turned on, so that when the sensor is flowed through, depending on the flow direction of a measuring device is heated by the heater more than the other measuring device. After DE 100 56 064 A1 It is also proposed to turn off the heater of the sensor to perform a sensor safety check with the gas valve closed and the fan off so as to eliminate the effect of natural flow on the sensor safety check.

Weiter Stand der Technik ist aus JP 5 106831 A bekannt.Next state of the art is off JP 5 106831 A known.

Hiervon ausgehend liegt der Erfindung das Problem zu Grunde, ein neuartiges Verfahren zum Regeln eines Gasbrenners mit erhöhter Regelgenauigkeit zu schaffen.On this basis, the invention is based on the problem to provide a novel method for controlling a gas burner with increased control accuracy.

Dieses Problem wird durch ein Verfahren zum Regeln eines Gasbrenners mit den Merkmalen des Anspruchs 1 gelöst. Erfindungsgemäß wird bei aktiver Regelung, also bei geöffnetem Gasventil und laufendem Gebläse, eine dem Sensor zugeordnete Heizeinrichtung in definierten Zeitabständen für einen definierten Zeitraum ausgeschaltet, wobei ein hierbei ermittelter Messwert des Sensors verwendet wird, um eine Kalibrierung der Regelung im Sinne einer Sollwertanpassung durchzuführen.This problem is solved by a method for controlling a gas burner with the features of claim 1. According to the invention, when the control is active, ie when the gas valve is open and the fan is running, a heating device associated with the sensor is switched off at defined time intervals for a defined period of time, whereby a measured value of the sensor is used to perform a calibration of the control in terms of a setpoint adjustment.

Mit der hier vorliegenden Erfindung wird ein Verfahren zum Regeln eines Gasbrenners vorgeschlagen, mit welchem in definierten Zeitabständen eine Sollwertanpassung der Regelung zu Kalibrierzwecken durchgeführt wird. Hierdurch kann gegenüber dem Stand der Technik eine wesentlich genauere Regelung eines Gasbrenners realisiert werden. Ein sich über den Betrieb des Gasbrenners einstellender Drift in der Funktionsweise des Sensors kann so kompensiert werden, um eine gleichbleibend gute Regelqualität zu gewährleisten.With the present invention, a method for controlling a gas burner is proposed, with which a setpoint adjustment of the control is performed for calibration purposes at defined time intervals. In this way, compared to the prior art, a much more accurate control of a gas burner can be realized. A drift in the mode of operation of the sensor adjusting over the operation of the gas burner can thus be compensated in order to ensure a consistently good quality of control.

Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Nachfolgend wird ein Ausführungsbeispiel der Erfindung, ohne hierauf beschränkt zu sein, anhand der Zeichnung näher erläutert. In der Zeichnung zeigt:

Fig. 1:
eine Vorrichtung zum Regeln eine Gasbrenners in schematisierter Darstellung;
Fig. 2:
den Sensor der Vorrichtung der Fig. 1 in detaillierter Darstellung; und
Fig. 3:
ein Diagramm zur Verdeutlichung des erfindungsgemäßen Verfahrens zum Regeln eines Gasbrenners.
Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Hereinafter, an embodiment of the invention, without being limited thereto, explained in more detail with reference to the drawing. In the drawing shows:
Fig. 1:
a device for controlling a gas burner in a schematic representation;
Fig. 2:
the sensor of the device Fig. 1 in a detailed representation; and
3:
a diagram illustrating the method according to the invention for controlling a gas burner.

Die hier vorliegende Erfindung betrifft ein Verfahren zur Regelung eines Gasbrenners, wobei dem zu regelnden Gasbrenner ein Gas/Luft-Gemisch zugeführt wird. Zur Bereitstellung des dem Gasbrenner zuzuführenden Gas/Luft-Gemisches ist dem Gasbrenner über eine Gasleitung 10 ein Gasstrom zuführbar, wobei in die Gasleitung 10 mindestens ein Gasventil 11 integriert ist. Die Gasleitung 10 mündet in eine Verbrennungsluftleitung 12, über die dem Gasbrenner ein Verbrennungsluftstrom zugeführt wird. Der Verbrennungsluftleitung 12 ist ein Gebläse 13 zugeordnet. Die Drehzahl des Gebläses 13 bestimmt den Verbrennungsluftstrom.The present invention relates to a method for controlling a gas burner, wherein the gas burner to be controlled, a gas / air mixture is supplied. In order to provide the gas / air mixture to be supplied to the gas burner, a gas stream can be fed to the gas burner via a gas line 10, at least one gas valve 11 being integrated into the gas line 10. The gas line 10 opens into a combustion air line 12, via which a combustion air flow is supplied to the gas burner. The combustion air line 12 is associated with a blower 13. The rotational speed of the blower 13 determines the combustion air flow.

Innerhalb der Verbrennungsluftleitung 12 ist eine Drosselstelle 14 angeordnet, wobei die Gasleitung 10 stromabwärts der Drosselstelle 14 in die Verbrennungsluftleitung 12 mündet. Eine Gasdüse 15 schließt die Gasleitung 10 im Bereich der Verbrennungsluftleitung 12 ab. In Strömungsrichtung hinter der Gasdüse 15 liegt demzufolge ein Gas/Luft-Gemisch vor.Within the combustion air line 12, a throttle point 14 is arranged, wherein the gas line 10 downstream of the throttle point 14 opens into the combustion air line 12. A gas nozzle 15 closes off the gas line 10 in the region of the combustion air line 12. In the flow direction behind the gas nozzle 15 is therefore present in front of a gas / air mixture.

Zur Bereitstellung einer 1:1-Gas/Luft-Regelung dient ein Sensor 16, der mit einem Messpunkt 17 an der Gasleitung 10 mit einem weiteren Messpunkt 18 an der Verbrennungsluftleitung 12 angreift. Der Sensor 16 ist als Durchflussmesser bzw. Anemometer ausgebildet und abhängig von den Strömungsverhältnissen bzw. Druckverhältnissen in der Gasleitung 10 sowie Verbrennungsluftleitung 12 durchströmt. Der detaillierte Aufbau des Sensors 16 ergibt sich aus Fig. 2.To provide a 1: 1 gas / air control is a sensor 16 which engages with a measuring point 17 on the gas line 10 with a further measuring point 18 on the combustion air line 12. The sensor 16 is designed as a flowmeter or anemometer and flows depending on the flow conditions or pressure conditions in the gas line 10 and combustion air line 12. The detailed structure of the sensor 16 results from Fig. 2 ,

Der Sensor 16 erzeugt abhängig von dessen Durchströmung ein elektrisches bzw. elektronisches Messsignal 19, welches einem Regelgerät 20 zugeführt wird. Das Regelgerät 20 vergleicht den vom Sensor bereitgestellten Istwert mit einem Sollwert, wobei abhängig hiervon ein Stellsignal 21 für einen dem Gasventil 11 zugeordneten Stellantrieb 22 erzeugt wird. Bei einer 1:1-Gas/Luft-Regelung wird das Gasventil 11 über den Stellantrieb 22 derart geöffnet, dass der Gasstrom dem Verbrennungsluftstrom entspricht, dass also durch den Sensor 16 keine Strömung fließt.The sensor 16 generates depending on the flow through an electrical or electronic measurement signal 19, which is supplied to a control unit 20. The control unit 20 compares the actual value provided by the sensor with a setpoint value, wherein an actuating signal 21 for an actuator 22 assigned to the gas valve 11 is generated as a function thereof. In a 1: 1 gas / air control, the gas valve 11 is opened via the actuator 22 such that the gas flow corresponds to the combustion air flow, so that no flow flows through the sensor 16.

Der Sensor 16 verfügt gemäß Fig. 2 über eine Heizeinrichtung 23, die zwischen zwei temperaturempfindlichen Messeinrichtung 24, 25 angeordnet ist. Die beiden temperaturempfindlichen Messeinrichtungen 24, 25 sind vorzugsweise als PTC-Elemente ausgeführt, wobei die Messeinrichtungen 24 und 25 über Widerstandselemente 27 und 28 an eine Spannungsversorgung angekoppelt sind. Die von den temperaturempfindlichen Messeinrichtungen 24 und 25 bereitgestellten Signale werden einem Verstärker 26 zugeführt, wobei der Verstärker 26 letztendlich das elektrische bzw. elektronische Messsignal 19 des Sensors 16 bereitstellt. Abhängig von der Durchströmungsrichtung des Sensors 16 wird bei eingeschalteter Heizeinrichtung 23 entweder die Messeinrichtung 24 oder die Messeinrichtung 25 stärker erwärmt.The sensor 16 has according to Fig. 2 via a heating device 23 which is arranged between two temperature-sensitive measuring devices 24, 25. The two temperature-sensitive measuring devices 24, 25 are preferably designed as PTC elements, wherein the measuring devices 24 and 25 are coupled via resistance elements 27 and 28 to a power supply. The signals provided by the temperature-sensitive measuring devices 24 and 25 are supplied to an amplifier 26, the amplifier 26 finally providing the electrical or electronic measuring signal 19 of the sensor 16. Depending on the direction of flow of the sensor 16, either the measuring device 24 or the measuring device 25 is heated more when the heating device 23 is switched on.

Im Sinne des erfindungsgemäßen Verfahrens wird vorgeschlagen, bei aktiver Regelung, also bei geöffnetem Gasventil 11 und eingeschaltetem Gebläse 13, die dem Sensor 16 zugeordnete Heizeinrichtung 23 in definierten Zeitabständen für einen definierten Zeitraum auszuschalten, wobei ein hierbei ermittelter Messwert des Sensors 16 verwendet wird, um eine Kalibrierung der Regelung im Sinne einer Sollwertanpassung durchzuführen. Der hierbei ermittelte Messwert des Sensors 16 wird als neuer Sollwert und damit neuer Regelpunkt für die 1:1-Gas/Luft-Regelung verwendet.For the purposes of the method according to the invention, it is proposed to switch off the heater 23 associated with the sensor 16 during active regulation, ie with the gas valve 11 open and the fan 16 switched on, at defined time intervals for a defined period of time, whereby a measured value of the sensor 16 determined here is used perform a calibration of the control in terms of a setpoint adjustment. The measured value of the sensor 16 determined here is used as a new desired value and thus new control point for the 1: 1 gas / air control.

Fig. 3 verdeutlicht das erfindungsgemäße Verfahren. So zeigt Fig. 3 ein Diagramm, in welcher auf der horizontal verlaufenden Achse der Durchfluss φ durch den Sensor 16 und auf der vertikal verlaufenden Achse das Messsignal U des Sensors 16 aufgetragen ist. Das Messsignal U entspricht dem Messsignal 19. Eine Kurve 29 zeigt das Messsignal U des Sensors 16 in Abhängigkeit vom Durchfluss Φ bei ausgeschalteter Heizeinrichtung des Sensors 16; eine Kurve 30 zeigt hingegen das Messsignal U des Sensors 16 in Abhängigkeit vom Durchfluss Φ bei eingeschalteter Heizeinrichtung 23. Fig. 3 illustrates the inventive method. So shows Fig. 3 a diagram in which on the horizontally extending axis of the flow rate φ through the sensor 16 and on the vertical axis, the measuring signal U of the sensor 16 is plotted. The measurement signal U corresponds to the measurement signal 19. A curve 29 shows the measurement signal U of the sensor 16 as a function of the flow rate Φ when the heating device of the sensor 16 is switched off; on the other hand, a curve 30 shows the measuring signal U of the sensor 16 as a function of the flow rate Φ when the heating device 23 is switched on.

Die beiden Kurven 29 und 30 entsprechen dem Verhalten eines neuen bzw. neuwertigen Sensors 16, wobei der Kreuzungspunkt CP0 der beiden Kurven 29 und 30 dem Sollwert für die 1:1-Gas/Luft-Regelung und damit dem Regelpunkt bei einem neuen bzw. neuwertigen Sensor 16 entspricht.The two curves 29 and 30 correspond to the behavior of a new or new sensor 16, wherein the crossing point CP 0 of the two curves 29 and 30, the target value for the 1: 1 gas / air control and thus the control point at a new or new sensor 16 corresponds.

Zur Kalibrierung und damit zur Kompensation von Drifteffekten des Sensors 16 wird erfindungsgemäß in definierten Zeitabständen für einen definierten Zeitraum die Heizeinrichtung 23 des Sensors 16 ausgeschaltet, wobei ein hierbei ermittelter Messwert des Sensors als neuer Sollwert für die 1:1-Gas/Luft-Regelung verwendet wird. Hierdurch ergibt sich ein konvergierender Prozess, der zu einem neuen Sollwert und damit Regelpunkt CPNEU für die 1:1-Gas/Luft-Regelung für einen gealterten Sensor 16 führt. Bei einem gealterten Sensor haben sich demnach die Kurven 29 sowie 30 auf die Kurven 29' bzw. 30' verschoben, wobei der neue Sollwert bzw. Regelpunkt CPNEU für die Regelung wiederum im Schnittpunkt der Kurven 29' und 30' liegt. Es wird demnach eine automatische Kalibrierung der Regelung im Sinne einer Sollwertanpassung für eine 1:1-Gas/Luft-Regelung bereitgestellt.For calibration and thus for compensation of drift effects of the sensor 16, according to the invention, the heater 23 of the sensor 16 is turned off at defined time intervals for a defined period of time, wherein a measured value of the sensor determined here is used as a new desired value for the 1: 1 gas / air control becomes. This results in a convergent process, which leads to a new desired value and thus control point CP NEW for the 1: 1 gas / air control for an aged sensor 16. Accordingly, in the case of an aged sensor, the curves 29 and 30 have shifted to the curves 29 'and 30', respectively, with the new setpoint or control point CP NEW for the control again being at the intersection of the curves 29 'and 30'. It is therefore provided an automatic calibration of the control in the sense of a setpoint adjustment for a 1: 1 gas / air control.

Nach einer vorteilhaften Weiterbildung der Erfindung erfolgt die Sollwertanpassung nur dann, wenn der bei aktiver Regelung und ausgeschalteter Heizeinrichtung 23 ermittelte Messwert U des Sensors 16 innerhalb eines zulässigen Toleranzbands um das Ausgangssignal U des Sensors 16 liegt, welches im Regelpunkt CP0 herrscht. Ist also das bei ausgeschalteter Heizeinrichtung 23 und aktiver Regelung ermittelte Ausgangssignal U des Sensors 16 größer als ein oberer Grenzwert oder kleiner als ein unterer Grenzwert, so erfolgt die Sollwertanpassung nicht, vielmehr wird eine Fehlermeldung generiert und der Gasregler stillgesetzt. Nur dann, wenn der Messwert U des Sensors bei aktiver Regelung und ausgeschalteter Heizeinrichtung 23 zwischen dem oberen Grenzwert und dem unteren Grenzwert liegt, erfolgt dann die erfindungsgemäße Sollwertanpassung.According to an advantageous embodiment of the invention, the setpoint adjustment takes place only when the measured value U of the sensor 16 determined during active control and switched-off heater 23 is within an allowable tolerance band around the output signal U of the sensor 16, which prevails in the control point CP 0 . Thus, if the output U of the sensor 16 determined when the heating device 23 is switched off and active control is greater than an upper limit value or less than a lower limit value, the setpoint adjustment does not take place, rather an error message is generated and the gas regulator is stopped. Only if the measured value U of the sensor is between the upper limit value and the lower limit value when the control is active and the heating device 23 is switched off is the setpoint adjustment according to the invention then carried out.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Gasleitunggas pipe
1111
Gasventilgas valve
1212
VerbrennungsluftleitungCombustion air line
1313
Gebläsefan
1414
Drosselstellerestriction
1515
Gasdüsegas nozzle
1616
Sensorsensor
1717
Messpunktmeasuring point
1818
Messpunktmeasuring point
1919
Messsignalmeasuring signal
2020
Regelgerätregulator
2121
Stellsignalactuating signal
2222
Stellgerätpositioner
2323
Heizeinrichtungheater
2424
Messeinrichtungmeasuring device
2525
Messeinrichtungmeasuring device
2626
Verstärkeramplifier
2727
Widerstandselementresistive element
2828
Widerstandselementresistive element
29, 29'29, 29 '
KurveCurve
30, 30'30, 30 '
KurveCurve

Claims (3)

  1. Method for controlling a gas burner, wherein a gas burner is fed a stream of gas by way of a gas line (10), which is assigned a gas valve (11), and a stream of combustion air by way of a combustion air line (12), which is assigned a blower (13), wherein an electrical or electronic measuring signal provided by a sensor (16), which acts on the one hand on the gas line (10) and on the other hand on the combustion air line (12), is used for controlling the gas burner in such a way that the stream of gas corresponds to the stream of combustion air in the sense of a 1:1 gas/air control, and consequently a flow through the sensor (16) is approximately zero, characterized in that, in the case of active control, that is to say with an opened gas valve (11) and a running blower (13), a heating device (23) assigned to the sensor (16) is switched off at defined time intervals for a defined time period, and in that a measured value thereby determined of the sensor (16) is used to carry out a calibration of the control in the sense of a setpoint adaptation.
  2. Value according to Claim 1, characterized in that the measured value thereby determined of the sensor (16) is used as a new setpoint, and consequently a new control point for the 1:1 gas/air control.
  3. Method according to Claim 1 or 2, characterized in that the setpoint adaptation only takes place when the measured value thereby determined of the sensor (16) lies between an upper limit value and a lower limit value.
EP07025165.7A 2007-01-15 2007-12-28 Method for controlling a gas burner Active EP1944549B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007002847A DE102007002847B4 (en) 2007-01-15 2007-01-15 Method for controlling a gas burner

Publications (3)

Publication Number Publication Date
EP1944549A2 EP1944549A2 (en) 2008-07-16
EP1944549A3 EP1944549A3 (en) 2014-02-26
EP1944549B1 true EP1944549B1 (en) 2015-07-15

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Application Number Title Priority Date Filing Date
EP07025165.7A Active EP1944549B1 (en) 2007-01-15 2007-12-28 Method for controlling a gas burner

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EP (1) EP1944549B1 (en)
DE (1) DE102007002847B4 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010044762A1 (en) * 2010-09-08 2012-03-08 Honeywell Technologies S.A.R.L. Device for calibrating a gas burner control
DE102011117736A1 (en) * 2011-11-07 2013-05-08 Honeywell Technologies Sarl Method for operating a gas burner
DE102015117406A1 (en) * 2015-10-13 2017-04-13 Ebm-Papst Landshut Gmbh Control device for gas burners
EP3290800B1 (en) * 2016-09-02 2021-03-24 Robert Bosch GmbH Method for updating a characteristic curve in a heating system and a control unit and a heating system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2825212B2 (en) * 1991-10-17 1998-11-18 大阪瓦斯株式会社 Combustion equipment
DE19824521B4 (en) 1998-06-02 2004-12-23 Honeywell B.V. Control device for gas burners
DE10056064B4 (en) 2000-11-11 2005-09-08 Honeywell B.V. Method for controlling a gas burner
DE102005034758B3 (en) * 2005-07-21 2006-08-10 Honeywell Technologies S.A.R.L. Method for operating a gas burner comprises actuating one or each gas valve for adjusting the gas stream through a gas line with a running fan depending on a signal from a sensor

Also Published As

Publication number Publication date
DE102007002847B4 (en) 2008-10-16
EP1944549A2 (en) 2008-07-16
DE102007002847A1 (en) 2008-07-17
EP1944549A3 (en) 2014-02-26

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