EP1179159B1 - Regulating device for gas burners - Google Patents

Regulating device for gas burners Download PDF

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Publication number
EP1179159B1
EP1179159B1 EP00934993A EP00934993A EP1179159B1 EP 1179159 B1 EP1179159 B1 EP 1179159B1 EP 00934993 A EP00934993 A EP 00934993A EP 00934993 A EP00934993 A EP 00934993A EP 1179159 B1 EP1179159 B1 EP 1179159B1
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EP
European Patent Office
Prior art keywords
gas
combustion air
flow
signal
sensor
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EP00934993A
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German (de)
French (fr)
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EP1179159A1 (en
Inventor
Enno Vrolijk
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Garrett Motion SARL
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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
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • 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
    • F23N5/188—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using mechanical means
    • 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
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N2005/185—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/04—Measuring pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/06—Ventilators at the air intake
    • F23N2233/08—Ventilators at the air intake with variable speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/16—Fuel valves variable flow or proportional valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2900/00—Special features of, or arrangements for controlling combustion
    • F23N2900/05181—Controlling air to fuel ratio by using a single differential pressure detector

Definitions

  • the invention relates to a control device for gas burners for providing a gas / aerated mixture.
  • Control devices for gas burners serve to provide a gas / air mixture, that is, supplying a gas flow and a combustion air flow to a burner.
  • the gas flow through a gas valve is dependent on the combustion air pressure adjustable.
  • Control devices for gas burners are known from the prior art, for.
  • EP 0 390 964 A1 well known.
  • a Pressure determination with the aid of a membrane, ie pneumatically.
  • the gas flow is controlled by the gas valve.
  • pneumatic path has a variety of disadvantages, all of which Restrict the scope of known control devices. That's how they limit you Hysteresis characteristics of the membrane and that between the membrane and the gas valve acting forces the work area and thus the scope.
  • DE 197 49 510 A1 shows a modulating burner a mixing device for mixing combustible gas and Air.
  • a mixing chamber of a mixing device is on the one hand via an air supply channel in which a throttle attached is supplied with air and on the other hand via a Gaszu 1500kanal in which a throttle is attached, supplied gas.
  • the throttles are designed so that in them during operation of the mixing device a laminar Flow of air or gas occurs.
  • Each throttle includes several channels.
  • JP-A-58 224 226 also relates to a control device for gas burners to provide a gas / air mixture for supplying a gas stream and a Combustion air flow to a burner with an inside a gas line arranged gas valve and an inside a combustion air duct arranged throttle body, wherein the gas flow leading gas line in the the combustion air flow leading combustion air duct ends.
  • WO 99/63272 relates to a further control device for gas burners.
  • the gas flow is dependent Adjustable by the combustion air pressure.
  • this control device is between a gas flow leading first Line and a combustion air flow leading second line arranged a sensor, which is an electrical Generates signal used to set a gas valve becomes.
  • WO 99/63273 relates to a further control device for gas burners that have an electric Signal generating sensor that has between a the gas flow leading first line and a the Combustion air flow leading second conduit arranged is.
  • This control device also has a Summing device, which is the electrical signal of the sensor charged with an auxiliary signal. On from an output signal the summing device generated control signal is used to change the gas flow.
  • the present invention is based on the object, a to create novel control device for gas burners.
  • the present invention relates to control devices for gas burners.
  • One not shown Burner should be supplied to a gas / air mixture.
  • a gas line 10th provided, which leads the gas flow to the burner.
  • the gas line 10 is a gas valve 11 assigned.
  • the combustion air line 12 therefore leads the Combustion air flow to the burner.
  • the combustion air duct 12 is a fan 13 assigned.
  • an orifice or throttle 14 is arranged, in the flow direction of the Combustion air in front of the blower 13.
  • the gas flow leading to the gas line 10 opens in Flow direction of the combustion air behind the throttle point 14 and before the blower 13 in the combustion air flow leading combustion air duct 12.
  • a gas nozzle 15 closes off the gas line 10 in the region of the combustion air line 12. In Flow direction behind the gas nozzle 15 and in front of the blower 13 is therefore a Gas / Luß mixture before.
  • the sensor 16 is a differential pressure sensor, in particular as a flowmeter, anemometer or the like.
  • the sensor 16 With a measuring point 17, the sensor 16 is at the gas flow leading gas line 10th connected. In the flow direction of the gas is the measuring point 17 in front of the gas nozzle 15th positioned.
  • a reference point 18 of the electrical or electronic sensor 16 There is a reference pressure, namely the combustion air pressure. There is no Connection between the sensor 16 and the combustion air duct 12 required in particular, when the sensor 16 and the inlet of the combustion air within the same housing are arranged.
  • the sensor 16 generates depending on the above pressure ratios an electrical or electronic signal 19, which is used to adjust the gas valve 11.
  • the electrical or electronic signal 19 is a control or Regulator 20 is supplied, which from the signal 19, a control signal 21 for a the Gas valve 11 associated actuator 22 generates.
  • control device shown in Figure 1 can therefore be a 1: 1 gas / air composite control to be provided. Detects the sensor 16 between reference pressure and gas pressure is a pressure difference of zero, the signal 19 corresponds to one Pressure difference of zero and the gas valve 11 can be operated unchanged. If the sensor 16 detects a higher reference pressure than the gas pressure, it must with the help of the electrical or electronic signal 19 generated by the sensor 16 the Gas valve 11 are controlled such that the gas flow increases. This generates the Control device 20, a control signal 21 for the actuator 22 of the gas valve 11, such that the signal 19 is returned to an amount equal to a pressure differential of zero equivalent.
  • control device of the embodiment of Figure 2 can be compared to the Embodiment of Figure 1 a different ratio between Gas flow and air flow can be realized, so a 1: N gas / air composite control.
  • the electrical or electronic signal 19 of the sensor 16 in a summing device 23 with a Auxiliary signal 24 is charged, before the signal 19 is supplied to the control unit 20 becomes.
  • the control unit 20 is therefore as an input signal, the output signal 25 of Summing device 23 is supplied, wherein the output signal 25 is an additive Superposition of the signals 19, 24 is.
  • the auxiliary signal 24 is one of a rotational speed of the blower 13 functionally dependent signal.
  • the auxiliary signal 24 is output in an evaluation device 26 a speed signal 27 of the blower 13 and the motor of the blower 13 won. There the auxiliary signal 24 is functionally dependent on the rotational speed of the blower 13 follows Immediately that the auxiliary signal 24 also from the combustion air flow or Combustion air pressure is dependent.
  • the auxiliary signal 24 it is possible to generate another way. So it is not mandatory that the Auxiliary signal 24 is determined based on the speed of the blower. It is too conceivable, an additional sensor, not shown, for generating the auxiliary signal 24th provided. Thus, by using the output of a flue gas sensor as Auxiliary signal to be provided a gas-adaptive control.
  • a factor can be determined, the ratio determined between gas flow and combustion air flow. This factor is a multiplication factor. The higher this multiplication factor, the higher is the gear ratio. About a variation of the multiplication factor is Gear ratio variable.

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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

The invention relates to a control means for gas burners. Control means for gas burners are used for supplying a gas flow and a combustion air flow to a burner. In this procedure, the gas flow is adjustable in dependence on the combustion air pressure. In the case of known control means, pressure measurement is effected by means of a diaphragm, i.e. pneumatically. This pneumatic pressure measurement restricts the scope of application of known control means.In the case of the control means according to the invention, there is provided a sensor (16) which generates an electric or electronic signal 19 which is used for adjusting the gas valve 11 (FIG. 1).

Description

Die Erfindung betrifft eine Regeleinrichtung für Gasbrenner zur Bereitstellung eines Gas/Lüft-Gemisches.The invention relates to a control device for gas burners for providing a gas / aerated mixture.

Regeleinrichtungen für Gasbrenner dienen der Bereitstellung eines Gas/Luft-Gemisches, also dem Zuführen eines Gasstroms und eines Verbrennungsluftstroms zu einem Brenner. Der Gasstrom durch ein Gasventil ist dabei in Abhängigkeit vom Verbrennungsluftdruck einstellbar.Control devices for gas burners serve to provide a gas / air mixture, that is, supplying a gas flow and a combustion air flow to a burner. The gas flow through a gas valve is dependent on the combustion air pressure adjustable.

Regeleinrichtungen für Gasbrenner sind aus dem Stand der Technik, z. B. der EP 0 390 964 A1, hinlänglich bekannt. Bei der dort beschriebenen Regeleinrichtung erfolgt eine Druckbestimmung mit Hilfe einer Membran, also auf pneumatischem Weg. Abhängig von dieser Druckmessung wird der Gasstrom durch das Gasventil geregelt. Dieser pneumatische Weg verfügt jedoch über eine Vielzahl von Nachteilen, die allesamt den Anwendungsbereich bekannter Regeleinrichtungen einschränken. So schränken die Hysterese-Eigenschaften der Membran und die zwischen der Membran und dem Gasventil wirkenden Kräfte den Arbeitsbereich und damit den Anwendungsbereich ein. Des weiteren bewirkt das Zusammenspiel zwischen den erforderlichen kleinen Stellkräften und den Betriebstoleranzen der Membran infolge von Störeinflüssen wie Temperatuschwankungen oder dergleichen eine Einschränkung des Anwendungsbereichs bekannter Regeleinrichtungen.Control devices for gas burners are known from the prior art, for. For example EP 0 390 964 A1, well known. In the control device described there is a Pressure determination with the aid of a membrane, ie pneumatically. Depending on This pressure measurement, the gas flow is controlled by the gas valve. This However, pneumatic path has a variety of disadvantages, all of which Restrict the scope of known control devices. That's how they limit you Hysteresis characteristics of the membrane and that between the membrane and the gas valve acting forces the work area and thus the scope. Furthermore causes the interaction between the required small restoring forces and the Operating tolerances of the membrane due to disturbing influences such as temperature fluctuations or the like, a limitation of the scope of known Control equipment.

Die DE 197 49 510 A1 zeigt einen modulierenden Brenner mit einer Mischeinrichtung zum Mischen von brennbarem Gas und Luft. Einer Mischkammer einer Mischeinrichtung wird einerseits über einen Luftzufuhrkanal in dem eine Drossel angebracht ist, Luft zugeführt und andererseits über einen Gaszuführkanal in dem eine Drossel angebracht ist, Gas zugeführt. Die Drosseln sind derart ausgeführt, dass in ihnen während des Betriebs der Mischeinrichtung eine laminare Strömung der Luft bzw. des Gases auftritt. Jede Drossel umfasst mehrere Kanäle.DE 197 49 510 A1 shows a modulating burner a mixing device for mixing combustible gas and Air. A mixing chamber of a mixing device is on the one hand via an air supply channel in which a throttle attached is supplied with air and on the other hand via a Gaszuführkanal in which a throttle is attached, supplied gas. The throttles are designed so that in them during operation of the mixing device a laminar Flow of air or gas occurs. Each throttle includes several channels.

Die JP-A-58 224 226 bezieht sich ebenfalls auf eine Regeleinrichtung für Gasbrenner zur Bereitstellung eines Gas-/Luft-Gemisches zum Zuführen eines Gasstromes und eines Verbrennungsluftstromes zu einem Brenner mit einem innerhalb einer Gasleitung angeordneten Gasventil und einer innerhalb einer Verbrennungsluftleitung angeordneten Drosselstelle, wobei die den Gasstrom führende Gasleitung in der den Verbrennungsluftstrom führenden Verbrennungsluftleitung endet.JP-A-58 224 226 also relates to a control device for gas burners to provide a gas / air mixture for supplying a gas stream and a Combustion air flow to a burner with an inside a gas line arranged gas valve and an inside a combustion air duct arranged throttle body, wherein the gas flow leading gas line in the the combustion air flow leading combustion air duct ends.

Die WO 99/63272 bezieht sich auf eine weitere Regeleinrichtung für Gasbrenner. Der Gasstrom ist dabei in Abhängigkeit vom Verbrennungsluftdruck einstellbar. Bei dieser Regeleinrichtung ist zwischen einer einen Gasstrom führenden ersten Leitung und einer einen Verbrennungsluftstrom führenden zweiten Leitung ein Sensor angeordnet, der ein elektrisches Signal erzeugt, das zur Einstellung eines Gasventils verwendet wird.WO 99/63272 relates to a further control device for gas burners. The gas flow is dependent Adjustable by the combustion air pressure. In this control device is between a gas flow leading first Line and a combustion air flow leading second line arranged a sensor, which is an electrical Generates signal used to set a gas valve becomes.

Die WO 99/63273 betrifft schließlich noch eine weitere Regeleinrichtung für Gasbrenner, die über einen ein elektrisches Signal erzeugenden Sensor verfügt, der zwischen einer den Gasstrom führenden ersten Leitung und einer den Verbrennungsluftstrom führenden zweiten Leitung angeordnet ist. Diese Regeleinrichtung verfügt darüber hinaus über eine Summiereinrichtung, die das elektrische Signal des Sensors mit einem Hilfssignal verrechnet. Ein aus einem Ausgangssignal der Summiereinrichtung erzeugtes Regelsignal wird zur Veränderung des Gasstroms verwendet.Finally, WO 99/63273 relates to a further control device for gas burners that have an electric Signal generating sensor that has between a the gas flow leading first line and a the Combustion air flow leading second conduit arranged is. This control device also has a Summing device, which is the electrical signal of the sensor charged with an auxiliary signal. On from an output signal the summing device generated control signal is used to change the gas flow.

Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe zu Grunde, eine neuartige Regeleinrichtung für Gasbrenner zu schaffen.On this basis, the present invention is based on the object, a to create novel control device for gas burners.

Dieses Problem wird durch eine Regeleinrichtung für Gasbrenner mit den Merkmalen des Anspruchs 1 gelöst. This problem is solved by a control device for gas burners with the characteristics of Claim 1 solved.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und der Beschreibung. Nachfolgend werden bevorzugte Ausführungsbeispiele der Erfindung anhand der Zeichnung näher erläutert. In der Zeichnung zeigt:

Fig. 1
eine erfindungsgemäße Regeleinrichtung mit weiteren Baugruppen nach einem ersten Ausführungsbeispiel der Erfindung in schematisierter Darstellung, und
Fig. 2
eine erfindungsgemäße Regeleinrichtung mit weiteren Baugruppen nach einem zweiten Ausführungsbeispiel der Erfindung ebenfalls in schematisierter Darstellung.
Further advantageous embodiments of the invention will become apparent from the dependent claims and the description. Hereinafter, preferred embodiments of the invention will be explained in more detail with reference to the drawing. In the drawing shows:
Fig. 1
a control device according to the invention with further modules according to a first embodiment of the invention in a schematic representation, and
Fig. 2
a control device according to the invention with further modules according to a second embodiment of the invention also in a schematic representation.

Die vorliegende Erfindung betrifft Regeleinrichtungen für Gasbrenner. Einem nicht-dargestellten Brenner soll ein Gas/Luft-Gemisch zugeführt werden.The present invention relates to control devices for gas burners. One not shown Burner should be supplied to a gas / air mixture.

Um dem nicht-dargestellten Brenner einen Gasstrom zuzuführen, ist eine Gasleitung 10 vorgesehen, die den Gasstrom zum Brenner führt. Der Gasleitung 10 ist ein Gasventil 11 zugeordnet.In order to supply a gas flow to the burner, not shown, is a gas line 10th provided, which leads the gas flow to the burner. The gas line 10 is a gas valve 11 assigned.

Die Zuführung der Verbrennungsluft zum nicht-dargestellten Brenner erfolgt über eine Verbrennungsluftleitung 12. Die Verbrennungsluftleitung 12 führt demzufolge den Verbrennungsluftstrom zum Brenner. Der Verbrennungsluftleitung 12 ist ein Gebläse 13 zugeordnet. Innerhalb der den Verbrennungsluftstrom führenden Verbrennungsluftleitung 12 ist eine Blende oder Drosselstelle 14 angeordnet, und zwar in Strömungsrichtung der Verbrennungsluft vor dem Gebläse 13.The supply of combustion air to the burner, not shown, via a Combustion air line 12. The combustion air line 12 therefore leads the Combustion air flow to the burner. The combustion air duct 12 is a fan 13 assigned. Within the combustion air flow leading combustion air duct 12, an orifice or throttle 14 is arranged, in the flow direction of the Combustion air in front of the blower 13.

Gemäß Figuren 1, 2 mündet die den Gasstrom führende Gasleitung 10 in Strömungsrichtung der Verbrennungsluft hinter der Drosselstelle 14 und vor dem Gebläse 13 in die den Verbrennungsluftstrom führende Verbrennungsluftleitung 12. Eine Gasdüse 15 schließt die Gasleitung 10 im Bereich der Verbrennungsluftleitung 12 ab. In Strömungsrichtung hinter der Gasdüse 15 und vor dem Gebläse 13 liegt demzufolge ein Gas/Luß-Gemisch vor.According to Figures 1, 2, the gas flow leading to the gas line 10 opens in Flow direction of the combustion air behind the throttle point 14 and before the blower 13 in the combustion air flow leading combustion air duct 12. A gas nozzle 15 closes off the gas line 10 in the region of the combustion air line 12. In Flow direction behind the gas nozzle 15 and in front of the blower 13 is therefore a Gas / Luß mixture before.

Bei dem in Figur 1 dargestellten Ausführungsbeispiel geht es nun darum, eine 1:1-Gas/Luft-Verbundregelung bereitzustellen. Erfindungsgemäß ist hierzu ein elektrischer bzw. elektronischer Sensor 16 vorgesehen. Der Sensor 16 ist als Differenzdruck-Sensor, insbesondere als Durchflußmesser, Anemometer oder dergleichen, ausgebildet. In the embodiment shown in Figure 1 is now about a To provide 1: 1 combined gas / air control. According to the invention, this is an electrical or electronic sensor 16 is provided. The sensor 16 is a differential pressure sensor, in particular as a flowmeter, anemometer or the like.

Mit einem Meßpunkt 17 ist der Sensor 16 an der den Gasstrom führenden Gasleitung 10 angeschlossen. In Strömungsrichtung des Gases ist der Meßpunkt 17 vor der Gasdüse 15 positioniert. An einem Referenzpunkt 18 des elektrischen bzw. elektronischen Sensors 16 herrscht ein Referenzdruck, nämlich der Verbrennungsluftdruck. Hierzu ist keine Verbindung zwischen dem Sensor 16 und der Verbrennungsluftleitung 12 erforderlich, insbesondere dann, wenn der Sensor 16 und der Einlaß der Verbrennungsluft innerhalb desselben Gehäuses angeordnet sind.With a measuring point 17, the sensor 16 is at the gas flow leading gas line 10th connected. In the flow direction of the gas is the measuring point 17 in front of the gas nozzle 15th positioned. At a reference point 18 of the electrical or electronic sensor 16 There is a reference pressure, namely the combustion air pressure. There is no Connection between the sensor 16 and the combustion air duct 12 required in particular, when the sensor 16 and the inlet of the combustion air within the same housing are arranged.

Soll, wie bereits erwähnt, beim Ausführungsbeispiel gemäß Figur 1 für eine 1:1-Gas/Luft-Verbundregelung gesorgt werden, so muß der Gasdruck dem Referenzdruck/Verbrennungsluftdruck entsprechen. In dem Fall, in dem der Sensor 16 als Durchflußmesser bzw. Anemometer ausgebildet ist, bedeutet dies, daß der Durchfluß durch den Sensor 16 Null beträgt. Nimmt z.B. der Gasdruck gegenüber dem Verbrennungsluftdruck ab, so erfährt der Sensor 16 einen Durchfluß in Richtung auf die Gasleitung 10. Aufgrund der Durchflußmenge können demnach vom Sensor 16 die Druckverhältnisse zwischen Verbrennungsluftdruck und Gasdruck ermittelt werden.Should, as already mentioned, in the embodiment of Figure 1 for a 1: 1 gas / air composite control be taken care of, so the gas pressure must Reference pressure / combustion air pressure correspond. In the case where the sensor 16 as Flow meter or anemometer is formed, this means that the flow is zero by the sensor 16. Take e.g. the gas pressure over the From combustion air pressure, so the sensor 16 undergoes a flow in the direction of the Gas line 10. Due to the flow rate can therefore from the sensor 16 Pressure ratios between combustion air pressure and gas pressure can be determined.

Der Sensor 16 erzeugt abhängig von den obigen Druckverhältnissen ein elektrisches bzw. elektronisches Signal 19, welches zur Verstellung des Gasventils 11 verwendet wird. Gemäß Figur 1 wird das elektrische bzw. elektronische Signal 19 einem Steuer- oder Regelgerät 20 zugeführt, das aus dem Signal 19 ein Regelungssignal 21 für einen dem Gasventil 11 zugeordneten Stellantrieb 22 erzeugt.The sensor 16 generates depending on the above pressure ratios an electrical or electronic signal 19, which is used to adjust the gas valve 11. According to Figure 1, the electrical or electronic signal 19 is a control or Regulator 20 is supplied, which from the signal 19, a control signal 21 for a the Gas valve 11 associated actuator 22 generates.

Mit der in Figur 1 dargestellten Regeleinrichtung kann demzufolge eine 1:1-Gas/Luft-Verbundregelung bereitgestellt werden. Detektiert der Sensor 16 zwischen Referenzdruck und Gasdruck eine Druckdifferenz von Null, so entspricht das Signal 19 einer Druckdifferenz von Null und das Gasventil 11 kann unverändert betrieben werden. Detektiert der Sensor 16 einen gegenüber dem Gasdruck höheren Referenzdruck, so muß mit Hilfe des vom Sensor 16 erzeugten elektrischen bzw. elektronischen Signals 19 das Gasventil 11 derart angesteuert werden, daß sich der Gasstrom erhöht. Hierzu erzeugt das Regelgerät 20 ein Regelungssignal 21 für den Stellantrieb 22 des Gasventils 11, derart, daß das Signal 19 wieder auf einen Betrag geführt wird, der einer Druckdifferenz von Null entspricht.With the control device shown in Figure 1 can therefore be a 1: 1 gas / air composite control to be provided. Detects the sensor 16 between reference pressure and gas pressure is a pressure difference of zero, the signal 19 corresponds to one Pressure difference of zero and the gas valve 11 can be operated unchanged. If the sensor 16 detects a higher reference pressure than the gas pressure, it must with the help of the electrical or electronic signal 19 generated by the sensor 16 the Gas valve 11 are controlled such that the gas flow increases. This generates the Control device 20, a control signal 21 for the actuator 22 of the gas valve 11, such that the signal 19 is returned to an amount equal to a pressure differential of zero equivalent.

Bei der Regeleinrichtung des Ausführungsbeispiels gemäß Figur 2 kann gegenüber dem Ausführungsbeispiel gemäß Figur 1 ein abweichendes Übersetzungsverhältnis zwischen Gasstrom und Luftstrom realisiert werden, also eine 1:N-Gas/Luft-Verbundregelung. In the control device of the embodiment of Figure 2 can be compared to the Embodiment of Figure 1 a different ratio between Gas flow and air flow can be realized, so a 1: N gas / air composite control.

Zur Gewährleistung eines variablen Übersetzungsverhältnisses zwischen Gasdruck und Verbrennungsluftdruck bzw. Gasstrom und Verbrennungsluftstrom wird das elektrische bzw. elektronische Signal 19 des Sensors 16 in einer Summiereinrichtung 23 mit einem Hilfssignal 24 verrechnet, und zwar bevor das Signal 19 dem Regelgerät 20 zugeführt wird. Dem Regelgerät 20 wird demnach als Eingangssignal das Ausgangssignal 25 der Summiereinrichtung 23 zugeführt, wobei das Ausgangssignal 25 eine additive Überlagerung der Signale 19, 24 ist.To ensure a variable transmission ratio between gas pressure and Combustion air pressure or gas flow and combustion air flow is the electrical or electronic signal 19 of the sensor 16 in a summing device 23 with a Auxiliary signal 24 is charged, before the signal 19 is supplied to the control unit 20 becomes. The control unit 20 is therefore as an input signal, the output signal 25 of Summing device 23 is supplied, wherein the output signal 25 is an additive Superposition of the signals 19, 24 is.

Bei dem Hilfssignal 24 handelt es sich um ein von einer Drehzahl des Gebläses 13 funktional abhängiges Signal. Das Hilfssignal 24 wird in einer Auswerteeinrichtung 26 aus einem Drehzahlsignal 27 des Gebläses 13 bzw. des Motors des Gebläses 13 gewonnen. Da das Hilfssignal 24 von der Drehzahl des Gebläses 13 funktional abhängig ist, folgt unmittelbar, daß das Hilfssignal 24 auch vom Verbrennungsluftstrom bzw. Verbrennungsluftdruck abhängig ist.The auxiliary signal 24 is one of a rotational speed of the blower 13 functionally dependent signal. The auxiliary signal 24 is output in an evaluation device 26 a speed signal 27 of the blower 13 and the motor of the blower 13 won. There the auxiliary signal 24 is functionally dependent on the rotational speed of the blower 13 follows Immediately that the auxiliary signal 24 also from the combustion air flow or Combustion air pressure is dependent.

In Abweichung vom gezeigten Ausführungsbeispiel ist es möglich, das Hilfssignal 24 auf andere Art und Weise zu generieren. So ist es nicht zwingend erforderlich, daß das Hilfssignal 24 ausgehend von der Drehzahl des Gebläses ermittelt wird. Auch ist es denkbar, einen zusätzlichen, nicht dargestellten Sensor zur Generierung des Hilfssignals 24 vorzusehen. So kann durch Verwendung des Ausgangssignals eines Rauchgassensors als Hilfssignal eine gasadaptive Regelung bereitgestellt werden.In deviation from the embodiment shown, it is possible to the auxiliary signal 24 to generate another way. So it is not mandatory that the Auxiliary signal 24 is determined based on the speed of the blower. It is too conceivable, an additional sensor, not shown, for generating the auxiliary signal 24th provided. Thus, by using the output of a flue gas sensor as Auxiliary signal to be provided a gas-adaptive control.

In der Auswerteeinrichtung 26 ist ein Faktor bestimmbar, der das Übersetzungsverhältnis zwischen Gasstrom und Verbrennungsluftstrom bestimmt. Bei diesem Faktor handelt es sich um einen Multiplikationsfaktor. Je höher dieser Multiplikationsfaktor ist, desto höher ist das Übersetzungsverhältnis. Über eine Variation des Multiplikationsfaktors ist das Übersetzungsverhältnis variierbar. In the evaluation device 26, a factor can be determined, the ratio determined between gas flow and combustion air flow. This factor is a multiplication factor. The higher this multiplication factor, the higher is the gear ratio. About a variation of the multiplication factor is Gear ratio variable.

Bezugszeichenliste:LIST 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
Referenzpunktreference point
1919
Signalsignal
2020
Regelgerätregulator
2121
Regelungssignalcontrol signal
2222
Stellantriebactuator
2323
Summiereinrichtungsumming
2424
Hilfssignalauxiliary signal
2525
Ausgangssignaloutput
2626
Auswerteeinrichtungevaluation
2727
DrehzahlsignalSpeed signal

Claims (5)

  1. Regulating device for gas burners, for providing a gas/air mixture, viz. for supplying a gas flow and a combustion air flow to a burner, with at least a gas valve (11) arranged within a gas conduit (10) and a choke point (14) arranged within a combustion air conduit (12), wherein the gas conduit (10) conveying the gas flow terminates at a gas nozzle (15) inside the combustion air conduit (12) conveying the combustion air flow, and wherein the gas nozzle (15) is located after the choke point (14) and before a fan (13) in the direction of flow of the combustion air, wherein
    (a) an electrical or electronic sensor (16) taps the gas conduit (10) conveying the gas flow at a measuring point (17),
    (b) the measuring point (17) is located before the gas nozzle (15) in the direction of flow of the gas,
    (c) a reference pressure which corresponds to the combustion air pressure is present at a reference point (18) of the electrical or electronic sensor (16) outside the combustion air conduit,
    (d) an electrical or electronic signal (19) generated by the sensor (16) is used to adjust the gas valve (11), and
    (e) the sensor (16) is configured as a differential pressure sensor, in particular a flow meter.
  2. Regulating device according to Claim 1, characterized in that a regulating signal (21) for a positioner (22) assigned to the gas valve (11) is generated as a function of the electrical or electronic signal (19) generated by the sensor (16).
  3. Regulating device according to Claim 1 or Claim 2, characterized in that a summing device (23) offsets the electrical or electronic signal (19) of the sensor (16) against an auxiliary signal (24), and in that a regulating signal (21) generated from an output signal (25) of the summing device (23) is used to vary the gas flow.
  4. Regulating device according to Claim 3, characterized in that the output signal (25) of the summing device (23) can be fed to a controller (20) which generates the regulating signal (21) for the positioner (22) of the gas valve (11).
  5. Regulating device according to Claim 3 or Claim 4, characterized in that the auxiliary signal (24) is functionally dependent on a rotational speed of the fan (13).
EP00934993A 1999-05-14 2000-05-09 Regulating device for gas burners Expired - Lifetime EP1179159B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19922226 1999-05-14
DE19922226A DE19922226C1 (en) 1999-05-14 1999-05-14 Control device for gas burners
PCT/EP2000/004126 WO2000070267A1 (en) 1999-05-14 2000-05-09 Regulating device for gas burners

Publications (2)

Publication Number Publication Date
EP1179159A1 EP1179159A1 (en) 2002-02-13
EP1179159B1 true EP1179159B1 (en) 2004-11-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00934993A Expired - Lifetime EP1179159B1 (en) 1999-05-14 2000-05-09 Regulating device for gas burners

Country Status (9)

Country Link
US (1) US6579087B1 (en)
EP (1) EP1179159B1 (en)
JP (1) JP2002544465A (en)
KR (1) KR20020013872A (en)
AT (1) ATE283452T1 (en)
CA (1) CA2372842A1 (en)
DE (2) DE19922226C1 (en)
ES (1) ES2231206T3 (en)
WO (1) WO2000070267A1 (en)

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EP2685167A1 (en) 2012-07-13 2014-01-15 Honeywell Technologies Sarl Method and controller for operating a gas burner
EP2685169A1 (en) 2012-07-13 2014-01-15 Honeywell Technologies Sarl Method and controller for operating a gas burner
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EP2966354A1 (en) 2014-07-08 2016-01-13 Honeywell Technologies Sarl Method and controller for operating a gas burner
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Publication number Priority date Publication date Assignee Title
EP2405198A1 (en) 2010-07-08 2012-01-11 Vaillant GmbH Method for the calibration of the regulation of the fuel-air ratio of a gaseous fuel burner
EP2623865A1 (en) 2012-02-03 2013-08-07 Honeywell Technologies Sarl Gas burner, method for operating the same and multi gas burner system
EP2685167A1 (en) 2012-07-13 2014-01-15 Honeywell Technologies Sarl Method and controller for operating a gas burner
EP2685169A1 (en) 2012-07-13 2014-01-15 Honeywell Technologies Sarl Method and controller for operating a gas burner
EP2685168A1 (en) 2012-07-13 2014-01-15 Honeywell Technologies Sarl Method and controller for operating a gas burner
EP2685168B1 (en) * 2012-07-13 2015-10-14 Honeywell Technologies Sarl Method for operating a gas burner
EP2829803A1 (en) 2013-07-25 2015-01-28 Honeywell Technologies Sarl Stabilizing gas burner combustion using Fast-Fourier-Transformation (FFT)
EP2966354A1 (en) 2014-07-08 2016-01-13 Honeywell Technologies Sarl Method and controller for operating a gas burner
EP3477201A1 (en) 2017-10-26 2019-05-01 Honeywell Technologies Sarl Method for operating a gas burner appliance
WO2019081464A1 (en) 2017-10-26 2019-05-02 Honeywell Technologies Sarl Method for operating a gas burner appliance

Also Published As

Publication number Publication date
US6579087B1 (en) 2003-06-17
EP1179159A1 (en) 2002-02-13
DE50008762D1 (en) 2004-12-30
KR20020013872A (en) 2002-02-21
DE19922226C1 (en) 2000-11-30
ES2231206T3 (en) 2005-05-16
CA2372842A1 (en) 2000-11-23
JP2002544465A (en) 2002-12-24
ATE283452T1 (en) 2004-12-15
WO2000070267A1 (en) 2000-11-23

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