EP2163821A2 - Assembly and method for monitoring a combustion device - Google Patents

Assembly and method for monitoring a combustion device Download PDF

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Publication number
EP2163821A2
EP2163821A2 EP20090168825 EP09168825A EP2163821A2 EP 2163821 A2 EP2163821 A2 EP 2163821A2 EP 20090168825 EP20090168825 EP 20090168825 EP 09168825 A EP09168825 A EP 09168825A EP 2163821 A2 EP2163821 A2 EP 2163821A2
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EP
European Patent Office
Prior art keywords
exhaust gas
detecting
mass flow
oxygen content
heater
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EP20090168825
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German (de)
French (fr)
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EP2163821A3 (en
Inventor
Remko Voordendag
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of EP2163821A2 publication Critical patent/EP2163821A2/en
Publication of EP2163821A3 publication Critical patent/EP2163821A3/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
    • F23N5/006—Systems for controlling combustion using detectors sensitive to combustion gas properties the detector being sensitive to oxygen
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • 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
    • F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
    • 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
    • F23N2237/10—High or low fire

Definitions

  • the invention relates to an arrangement for monitoring a furnace according to the preamble of claim 1 and a method for monitoring a furnace and for operating this arrangement according to the preamble of claim 2.
  • Generic combustion systems and heaters consist essentially of a burned with solid, liquid or gaseous fuels burner, an air and / or exhaust fan, a control device for controlling and monitoring the combustion.
  • separate sensors are known for the combustion control, which serve on the one hand to detect the oxygen content in the exhaust gas and on the other hand to detect the exhaust gas mass flow.
  • the oxygen content in the exhaust gas and the combustion air mass flow which corresponds to the exhaust gas mass flow, are important for the combustion control. In particular, this ensures the quality of combustion as well as low emissions.
  • the performance of heating appliances is monitored and regulated.
  • these conventional sensors are each provided with electric heaters to perform a measurement can.
  • the function of the sensor for detecting the exhaust gas mass flow corresponds to that of a hot wire anemometer, as known from the prior art.
  • a heating wire is exposed to the flow of a gaseous medium and then electronically monitors the resistance and / or voltage change on the heating wire.
  • a proportionately larger heating power requires the proper operation of a sensor for the oxygen content in the exhaust gas.
  • Both the mass flow sensor and the oxygen sensor have hitherto been operated separately and largely independently of one another.
  • an oxygen sensor for engine exhaust from the DE 103 12 240 B4 which comprises a sensor heater with monitoring of the heating current.
  • a control system for a heater for an oxygen sensor known. This includes a passive module for controlling a heater, which generates a signal to control a heater at a first duty cycle and measures a resistance of the heater for an oxygen sensor, an exhaust gas temperature assignment module that assigns the resistance to an exhaust gas temperature, and an active module for controlling a heater that provides a signal to control a heater generated at a second duty cycle based on the exhaust gas temperature.
  • the invention has for its object to optimize the operation of a furnace, in particular a heater, in view of a good quality of combustion and low power consumption.
  • the arrangement for monitoring a furnace is characterized in that a single unit is provided as a sensor for detecting the oxygen content in the exhaust gas and for detecting the exhaust gas mass flow, which has a single heater for both functions.
  • the method for monitoring a furnace and for operating the arrangement described above is characterized in that the heater is switchable to a standby mode with a lower heating power, in which only the exhaust gas mass flow is detected. This may be sufficient, for example, in standby and also in certain operating phases of the heater.
  • the heating device switches to the normal operating state, which also permits detection of the oxygen content in the exhaust gas, with a higher heating power.
  • sufficient time remains until the required temperature is reached at the sensor.
  • the pre-venting time of the fan can be used for the corresponding high heating of the sensor, because in this phase of operation, the detection of the oxygen content is not yet operationally necessary. Nevertheless, it is generally switched as quickly as possible to the detection of the oxygen content in the exhaust gas and recorded parallel to the air flow. This is very important because usually for an electronically controlled gas-air mixture first sufficient airflow is achieved must become. Before the gas valve may be opened, the detection of this air flow can take place with the combination sensor according to the invention.
  • the heating device can be switched in a further embodiment in the normal, also detecting the oxygen content in the exhaust gas enabling operating state, if by one of the control device in the standby mode, the connection was determined by authoritative for burner operation components.
  • the fan belongs to these components.
  • the heating device is switched to a standby operating state as soon as these burner components are switched off, and / or as soon as they fall below predefinable threshold values.
  • These thresholds include, for example, a predetermined fan speed.
  • a calibration of the firing plant and / or the burner can be realized more reliably than hitherto.
  • the exhaust gas mass flow and the purge time are evaluated with fresh air, in particular to promote residues of exhaust gas and possibly polluted air from the firing system out.
  • a calibration is then carried out to the maximum oxygen content in the air.
  • the safe and good quality combustion is ensured at each operating point, although on the other hand power for the heater in the standby mode is saved.
  • the standby losses are reduced, but nevertheless the sensor or the function for detecting the oxygen content in the exhaust gas is available again relatively quickly.
  • only a single sensor is needed. This also means only one installation position and only one fastener on or in the exhaust path.
  • only one, preferably multi-core electrical connection line between control device and sensor is sufficient.
  • a component with two functions, such as the sensor according to the invention continues to bring advantages already in production and assembly as well as in the spare parts stocking.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

The arrangement has burner lighted with solid, liquid or gaseous fuels. A controller and a sensor detect oxygen content in exhaust gas and exhaust mass flow of heating devices, where the sensor has an individual heating unit for both functions. Each heating device is switched to normal operating condition when increase of the exhaust mass flow is detected by the control unit in standby operating condition, where the normal operating condition enables the detection of the oxygen content in the exhaust gas. An independent claim is also included for a method for monitoring a firing system i.e. heater.

Description

Die Erfindung betrifft eine Anordnung zur Überwachung einer Feuerungsanlage nach dem Oberbegriff des Patentanspruches 1 sowie ein Verfahren zur Überwachung einer Feuerungsanlage und zum Betreiben dieser Anordnung nach dem Oberbegriff des Patentanspruches 2.The invention relates to an arrangement for monitoring a furnace according to the preamble of claim 1 and a method for monitoring a furnace and for operating this arrangement according to the preamble of claim 2.

Gattungsgemäße Feuerungsanlagen und Heizgeräte bestehen im Wesentlichen aus einem mit festen, flüssigen oder gasförmigen Brennstoffen befeuerten Brenner, einem Luft- und/oder Abgasgebläse, einer Regeleinrichtung zur Regelung und Überwachung der Verbrennung. Außerdem sind für die Verbrennungsregelung separate Sensoren bekannt, welche einerseits zur Erfassung des Sauerstoffgehaltes im Abgas und anderseits zur Erfassung des Abgasmassenstromes dienen. Generell sind nämlich der Sauerstoffgehalt im Abgas und der Verbrennungsluft-Massenstrom, welcher dem Abgasmassenstrom entspricht, für die Verbrennungsregelung wichtig. Insbesondere werden damit die Verbrennungsgüte sowie niedrige Emissionen sichergestellt. Außerdem wird die Leistung von Heizgeräten damit überwacht und auch geregelt.Generic combustion systems and heaters consist essentially of a burned with solid, liquid or gaseous fuels burner, an air and / or exhaust fan, a control device for controlling and monitoring the combustion. In addition, separate sensors are known for the combustion control, which serve on the one hand to detect the oxygen content in the exhaust gas and on the other hand to detect the exhaust gas mass flow. In general, the oxygen content in the exhaust gas and the combustion air mass flow, which corresponds to the exhaust gas mass flow, are important for the combustion control. In particular, this ensures the quality of combustion as well as low emissions. In addition, the performance of heating appliances is monitored and regulated.

Diese üblichen Sensoren sind jeweils mit elektrischen Heizvorrichtungen versehen, um eine Messung durchführen zu können. Beispielsweise entspricht die Funktion des Sensors zur Erfassung des Abgasmassenstromes der eines Hitzdraht-Anemometers, wie es aus dem Stand der Technik bekannt ist. Dabei wird ein Heizdraht der Strömung eines gasförmigen Mediums ausgesetzt und dann elektronisch die Widerstands- und/oder Spannungsänderung am Heizdraht überwacht. Eine im Verhältnis dazu noch größere Heizleistung erfordert der ordnungsgemäße Betrieb eines Sensors für den Sauerstoffgehalt im Abgas. Sowohl der Massenstrom- als auch der Sauerstoffsensor werden bisher separat und weitgehend unabhängig voneinander betrieben.These conventional sensors are each provided with electric heaters to perform a measurement can. For example, the function of the sensor for detecting the exhaust gas mass flow corresponds to that of a hot wire anemometer, as known from the prior art. In this case, a heating wire is exposed to the flow of a gaseous medium and then electronically monitors the resistance and / or voltage change on the heating wire. A proportionately larger heating power requires the proper operation of a sensor for the oxygen content in the exhaust gas. Both the mass flow sensor and the oxygen sensor have hitherto been operated separately and largely independently of one another.

Bekannt ist beispielsweise ein Sauerstoffsensor für Motorenabgas aus der DE 103 12 240 B4 , welcher eine Sensorheizung mit Überwachung des Heizungsstromes umfasst.For example, an oxygen sensor for engine exhaust from the DE 103 12 240 B4 which comprises a sensor heater with monitoring of the heating current.

Weiterhin ist aus der DE 10 2008 006 580 A1 ein Steuersystem für einen Erhitzer für einen Sauerstoffsensor bekannt. Dieser umfasst ein passives Modul zur Steuerung eines Erhitzers, das ein Signal zur Steuerung eines Erhitzers bei einer ersten Einschaltdauer erzeugt und einen Widerstand des Erhitzers für einen Sauerstoffsensor misst, ein Abgastemperatur-Zuordnungsmodul, welches den Widerstand einer Abgastemperatur zuordnet, sowie ein aktives Modul zur Steuerung eines Erhitzers, welches ein Signal zur Steuerung eines Erhitzers bei einer zweiten Einschaltdauer auf der Grundlage der Abgastemperatur erzeugt.Furthermore, from the DE 10 2008 006 580 A1 a control system for a heater for an oxygen sensor known. This includes a passive module for controlling a heater, which generates a signal to control a heater at a first duty cycle and measures a resistance of the heater for an oxygen sensor, an exhaust gas temperature assignment module that assigns the resistance to an exhaust gas temperature, and an active module for controlling a heater that provides a signal to control a heater generated at a second duty cycle based on the exhaust gas temperature.

Der Erfindung liegt die Aufgabe zugrunde, den Betrieb einer Feuerungsanlage, insbesondere eines Heizgerätes, im Hinblick auf eine gute Verbrennungsqualität und einen geringen Stromverbrauch zu optimieren.The invention has for its object to optimize the operation of a furnace, in particular a heater, in view of a good quality of combustion and low power consumption.

Erfindungsgemäß wird dies mit den Merkmalen der Patentansprüche 1 und 2 gelöst. Vorteilhafte Weiterbildungen sind den Unteransprüchen zu entnehmen.This is achieved with the features of claims 1 and 2 according to the invention. Advantageous developments can be found in the dependent claims.

Die Anordnung zur Überwachung einer Feuerungsanlage ist dadurch gekennzeichnet, dass eine einzige Baueinheit als Sensor zur Erfassung des Sauerstoffgehaltes im Abgas und zur Erfassung des Abgasmassenstromes vorgesehen ist, welche eine einzige Heizvorrichtung für beide Funktionen aufweist.The arrangement for monitoring a furnace is characterized in that a single unit is provided as a sensor for detecting the oxygen content in the exhaust gas and for detecting the exhaust gas mass flow, which has a single heater for both functions.

Das Verfahren zur Überwachung einer Feuerungsanlage und zum Betreiben der vorstehend beschriebenen Anordnung ist dadurch gekennzeichnet, dass die Heizvorrichtung in einen Standby-Betriebszustand mit einer geringeren Heizleistung schaltbar ist, in dem nur der Abgasmassenstrom erfasst wird. Dies kann zum Beispiel in Bereitschafts- und auch in gewissen Betriebsphasen des Heizgerätes ausreichen.The method for monitoring a furnace and for operating the arrangement described above is characterized in that the heater is switchable to a standby mode with a lower heating power, in which only the exhaust gas mass flow is detected. This may be sufficient, for example, in standby and also in certain operating phases of the heater.

Wird von der Regeleinrichtung im Standby-Betriebszustand ein steigender Abgasmassenstrom detektiert, schaltet die Heizvorrichtung in den normalen, auch eine Erfassung des Sauerstoffgehaltes im Abgas ermöglichenden Betriebszustand mit einer höheren Heizleistung. Im Betrieb bleibt dann bis zum Erreichen der erforderlichen Temperatur am Sensor ausreichend Zeit. Beispielsweise kann die Vorbelüftungszeit des Gebläses für das entsprechende Hochheizen des Sensors genutzt werden, denn in dieser Betriebsphase ist die Erfassung des Sauerstoffgehaltes noch nicht betriebsnotwendig. Trotzdem wird dabei generell möglichst schnell auf die Erfassung des Sauerstoffgehaltes im Abgas umgeschaltet und parallel dazu die Luftströmung erfasst. Dies ist sehr wichtig, da üblicherweise für eine elektronisch geregelte Gas-Luft-Mischung zuerst eine ausreichende Luftströmung erreicht werden muss. Bevor das Gasventil geöffnet werden darf, kann das Detektieren dieser Luftströmung mit dem erfindungsgemäßen Kombinationssensor erfolgen. Ansonsten wäre, wie bisher üblich, ein separater Sensor zum Erfassen der Luftströmung bzw. des Abgasmassenstromes parallel zu einem Sauerstoffsensor notwendig.
Alternativ oder ergänzend kann die Heizvorrichtung in einer weiteren Ausführungsform in den normalen, auch eine Erfassung des Sauerstoffgehaltes im Abgas ermöglichenden Betriebszustand geschaltet werden, wenn durch eine von der Regeleinrichtung im Standby-Betriebszustand die Zuschaltung von für den Brennerbetrieb maßgebenden Komponenten detektiert wurde. Zu diesen Komponenten gehört insbesondere das Gebläse.If an increasing exhaust gas mass flow is detected by the control device in the standby operating state, the heating device switches to the normal operating state, which also permits detection of the oxygen content in the exhaust gas, with a higher heating power. During operation, sufficient time remains until the required temperature is reached at the sensor. For example, the pre-venting time of the fan can be used for the corresponding high heating of the sensor, because in this phase of operation, the detection of the oxygen content is not yet operationally necessary. Nevertheless, it is generally switched as quickly as possible to the detection of the oxygen content in the exhaust gas and recorded parallel to the air flow. This is very important because usually for an electronically controlled gas-air mixture first sufficient airflow is achieved must become. Before the gas valve may be opened, the detection of this air flow can take place with the combination sensor according to the invention. Otherwise, as previously customary, a separate sensor for detecting the air flow or the exhaust gas mass flow parallel to an oxygen sensor would be necessary.
Alternatively or additionally, the heating device can be switched in a further embodiment in the normal, also detecting the oxygen content in the exhaust gas enabling operating state, if by one of the control device in the standby mode, the connection was determined by authoritative for burner operation components. In particular, the fan belongs to these components.

Im Umkehrfall wird die Heizvorrichtung in einen Standby-Betriebszustand geschaltet, sobald diese für den Brennerbetrieb maßgebenden Komponenten abgeschaltet werden, und/oder sobald diese vorgebbare Schwellwerte unterschreiten. Zu diesen Schwellwerten gehört zum Beispiel eine vorgebbare Gebläsedrehzahl.In the reverse case, the heating device is switched to a standby operating state as soon as these burner components are switched off, and / or as soon as they fall below predefinable threshold values. These thresholds include, for example, a predetermined fan speed.

Außerdem ist mit dem erfindungsgemäßen kombinierten Sensor zur Erfassung des Sauerstoffgehaltes im Abgas und zur Erfassung des Abgasmassenstromes eine Kalibrierung der Feuerungsanlage und/oder des Brenners sicherer als bisher zu realisieren. In einem ersten Schritt werden dabei der Abgasmassenstrom und die Spülzeit mit Frischluft ausgewertet, insbesondere um Reste von Abgas und eventuell verschmutzte Luft aus der Feuerungsanlage heraus zu fördern. In einem zweiten Schritt wird danach dann eine Kalibrierung auf den maximalen Sauerstoffgehalt in der Luft durchgeführt.In addition, with the combined sensor according to the invention for detecting the oxygen content in the exhaust gas and for detecting the exhaust gas mass flow, a calibration of the firing plant and / or the burner can be realized more reliably than hitherto. In a first step, the exhaust gas mass flow and the purge time are evaluated with fresh air, in particular to promote residues of exhaust gas and possibly polluted air from the firing system out. In a second step, a calibration is then carried out to the maximum oxygen content in the air.

Mit der Erfindung wird der Betrieb einer Feuerungsanlage, insbesondere eines Heizgerätes, im Hinblick auf eine gute Verbrennungsqualität und einen geringen Stromverbrauch, optimiert. Die sichere und qualitativ gute Verbrennung wird in jedem Betriebspunkt gewährleistet, obwohl andererseits Strom für die Heizvorrichtung im Standby-Betriebszustand eingespart wird. Die Bereitschaftsverluste werden verringert, aber trotzdem steht der Sensor bzw. die Funktion zur Erfassung des Sauerstoffgehaltes im Abgas relativ schnell wieder zur Verfügung. Erfindungsgemäß wird nur noch ein einziger Sensor benötigt. Dies bedeutet auch nur eine Einbauposition und nur ein Befestigungsmittel am bzw. im Abgasweg. Außerdem reicht nur eine, vorzugsweise mehradrige elektrische Anschlussleitung zwischen Regeleinrichtung und Sensor aus. Eine Komponente mit zwei Funktionen, wie der erfindungsgemäße Sensor, bringt weiterhin schon in Herstellung und Montage sowie in der Ersatzteilbevorratung Vorteile.With the invention, the operation of a furnace, in particular a heater, with regard to a good combustion quality and low power consumption, optimized. The safe and good quality combustion is ensured at each operating point, although on the other hand power for the heater in the standby mode is saved. The standby losses are reduced, but nevertheless the sensor or the function for detecting the oxygen content in the exhaust gas is available again relatively quickly. According to the invention, only a single sensor is needed. This also means only one installation position and only one fastener on or in the exhaust path. In addition, only one, preferably multi-core electrical connection line between control device and sensor is sufficient. A component with two functions, such as the sensor according to the invention, continues to bring advantages already in production and assembly as well as in the spare parts stocking.

Claims (6)

Anordnung zur Überwachung einer Feuerungsanlage, insbesondere eines Heizgerätes, mit einem mit festen, flüssigen oder gasförmigen Brennstoffen befeuerten Brenner, einem Luft- und/oder Abgasgebläse, einer Regeleinrichtung sowie Sensoren zur Erfassung des Sauerstoffgehaltes im Abgas und zur Erfassung des Abgasmassenstroms, welche jeweils mit Heizvorrichtungen versehen sind,
dadurch gekennzeichnet, dass eine einzige Baueinheit als Sensor zur Erfassung des Sauerstoffgehaltes im Abgas und zur Erfassung des Abgasmassenstromes vorgesehen ist, welche eine einzige Heizvorrichtung für beide Funktionen aufweist.Arrangement for monitoring a furnace, in particular a heater, with a burned with solid, liquid or gaseous fuels burner, an air and / or exhaust fan, a control device and sensors for detecting the oxygen content in the exhaust gas and for detecting the exhaust gas mass flow, each with heaters are provided
characterized in that a single unit is provided as a sensor for detecting the oxygen content in the exhaust gas and for detecting the exhaust gas mass flow having a single heater for both functions. Verfahren zur Überwachung einer Feuerungsanlage, insbesondere eines Heizgerätes, mit einem mit festen, flüssigen oder gasförmigen Brennstoffen befeuerten Brenner, einem Luft- und/oder Abgasgebläse, einer Regeleinrichtung sowie Sensoren zur Erfassung des Sauerstoffgehaltes im Abgas und zur Erfassung des Abgasmassenstromes, welche jeweils mit Heizvorrichtungen versehen sind, und zum Betreiben der Anordnung nach Anspruch 1,
dadurch gekennzeichnet, dass die Heizvorrichtung in einen Standby-Betriebszustand mit einer geringeren Heizleistung schaltbar ist, in dem nur der Abgasmassenstrom erfasst wird.Method for monitoring a furnace, in particular a heater, with a solid, liquid or gaseous fuel burned burner, an air and / or exhaust fan, a control device and sensors for detecting the oxygen content in the exhaust gas and for detecting the exhaust gas mass flow, each with heaters are provided, and for operating the arrangement according to claim 1,
characterized in that the heating device is switchable to a standby operating state with a lower heating power, in which only the exhaust gas mass flow is detected. Verfahren nach Anspruch 2,
dadurch gekennzeichnet, dass bei einem von der Regeleinrichtung im Standby-Betriebszustand detektierten steigenden Abgasmassenstrom die Heizvorrichtung in den normalen, auch eine Erfassung des Sauerstoffgehaltes im Abgas ermöglichenden Betriebszustand schaltbar ist.Method according to claim 2,
characterized in that in a detected by the control device in the standby mode, increasing exhaust gas mass flow, the heater in the normal, also a detection of the oxygen content in the exhaust gas enabling operating state is switchable. Verfahren nach Anspruch 2 oder 3,
dadurch gekennzeichnet, dass die Heizvorrichtung durch eine von der Regeleinrichtung im Standby-Betriebszustand detektierte Zuschaltung von für den Brennerbetrieb maßgebenden Komponenten, insbesondere eines Gebläses, in den normalen, auch eine Erfassung des Sauerstoffgehaltes im Abgas ermöglichenden Betriebszustand schaltbar ist.Method according to claim 2 or 3,
characterized in that the heating device is switchable by a detected by the control device in the standby mode connection of authoritative for burner operation components, in particular a blower in the normal, also detecting the oxygen content in the exhaust gas enabling operating state. Verfahren nach einem der Ansprüche 2 bis 4,
dadurch gekennzeichnet, dass die Heizvorrichtung bei Abschaltung von für den Brennerbetrieb maßgebenden Komponenten, insbesondere eines Gebläses, und/oder bei Unterschreitung eines vorgebbaren Schwellwertes für die Gebläsedrehzahl, in einen Standby-Betriebszustand schaltbar ist.Method according to one of claims 2 to 4,
characterized in that the heater when switching off for authoritative burner components, in particular a fan, and / or falls below a predetermined threshold for the fan speed, in a standby mode is switchable. Verfahren nach einem der Ansprüche 2 bis 5,
dadurch gekennzeichnet, dass eine Kalibrierung der Feuerungsanlage und/oder des Brenners mit dem Sensor zur Erfassung des Sauerstoffgehaltes im Abgas und zur Erfassung des Abgasmassenstromes erfolgt, indem in einem ersten Schritt der Abgasmassenstrom und die Spülzeit mit Frischluft ausgewertet wird, um in einem zweiten Schritt eine Kalibrierung auf den maximalen Sauerstoffgehalt in der Luft durchzuführen.Method according to one of claims 2 to 5,
characterized in that a calibration of the furnace and / or the burner with the sensor for detecting the oxygen content in the exhaust gas and for detecting the exhaust gas mass flow is carried out by the exhaust gas mass flow and the rinsing time is evaluated with fresh air in a first step, in a second step a Calibration to perform the maximum oxygen content in the air.
EP09168825.9A 2008-09-13 2009-08-27 Assembly and method for monitoring a combustion device Withdrawn EP2163821A3 (en)

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DE102008047037A DE102008047037B3 (en) 2008-09-13 2008-09-13 Arrangement and method for monitoring a furnace

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EP2163821A3 EP2163821A3 (en) 2014-10-15

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DE102010044430A1 (en) 2010-09-04 2012-03-08 G I W E P Gesellschaft für industrielle Wärme, Energie- und Prozeßtechnik m.b.H Method for monitoring gas-heated furnace by continuous comparative control of gas- and air volumes, involves determining comparison standards for gas- and air volumes using measured process values after start-up phase of furnace

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Publication number Priority date Publication date Assignee Title
DE102021109809A1 (en) 2021-04-19 2022-10-20 Dürr Systems Ag THERMAL RAW GAS TREATMENT DEVICE

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