EP3260777A1 - Method for detecting a blockade of a flue gas discharge of a burner system and burner system - Google Patents
Method for detecting a blockade of a flue gas discharge of a burner system and burner system Download PDFInfo
- Publication number
- EP3260777A1 EP3260777A1 EP16175599.6A EP16175599A EP3260777A1 EP 3260777 A1 EP3260777 A1 EP 3260777A1 EP 16175599 A EP16175599 A EP 16175599A EP 3260777 A1 EP3260777 A1 EP 3260777A1
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- EP
- European Patent Office
- Prior art keywords
- volume flow
- burner system
- burner
- blockage
- test
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- 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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Classifications
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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
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
- F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2213/00—Chimneys or flues
- F23J2213/70—Safety arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/04—Measuring pressure
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- 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
Definitions
- a method has already been proposed for detecting a blockage of an exhaust gas outlet of a burner system, in which at least one pressure characteristic within the exhaust gas outlet is detected and / or evaluated for detecting the blockage.
- the invention is based on a method for detecting a blockage of an exhaust gas removal of a burner system, in which at least one pressure characteristic value for detecting the blockage is detected and / or evaluated.
- test volume flow is generated to detect the blockage, which is greater than a Zündvolumenstrom the burner system.
- a "burner system” is to be understood as meaning, in particular, a system which is intended to convert energy, in particular bioenergy and / or preferably fossil energy, into heat, in particular by means of a combustion process.
- By "provided” is intended to be understood in particular specially programmed, designed and / or equipped.
- the fact that an object is intended for a specific function should in particular mean that the object fulfills and / or executes this specific function in at least one application and / or operating state.
- the burner system at least one burner, at least one fan for supplying a combustion air and at least one fuel control valve for supplying a fuel.
- the burner is in particular intended to burn a mixture, in particular a fuel mixture of a combustion air and a fuel.
- the burner can be designed, in particular, as a power-modulating gas-jet burner.
- a “fuel mixture” is to be understood in this context, in particular an ignitable mixture of a fuel and a combustion air, which is intended to be supplied to a burner of a burner system for carrying out a combustion process.
- a “fuel” is preferably to be understood as meaning a hydrocarbon-containing gas or gas mixture, preferably a natural gas or a natural gas mixture, in particular a natural gas, a liquid gas or a biogas comprising at least one alkane, in particular methane, ethane, propane and / or butane to be understood.
- exhaust gas removal is to be understood in particular as a hollow pipe or a hollow pipe system which is intended to discharge a combustion exhaust gas from a burner system, in particular from a combustion chamber of a burner system.
- a pressure characteristic value is to be understood as meaning, in particular, a characteristic value which contains at least information about a pressure within the exhaust gas removal of the burner system. The pressure characteristic is detected in particular, for example by means of a pressure sensor and / or by means of a pressure switch, within the exhaust gas removal. In particular, it is concluded on the basis of the pressure characteristic value to a blockage of the exhaust gas discharge.
- a "blockage of the exhaust gas removal” is to be understood in particular as meaning that a gas flow through the exhaust gas removal, in particular due to contamination and / or foreign bodies, is inhibited in such a way that combustion exhaust gases can no longer be dissipated to a sufficient extent.
- test volume flow is to be understood as meaning, in particular, a volumetric flow which is generated exclusively for the purpose of detecting a blockage of the exhaust gas removal.
- the test volume flow flows through the entire burner system.
- the test volume flow corresponds in particular at least substantially a volume flow which can be generated maximally within the burner system, in particular by means of a blower of the burner system.
- the test volume flow is preferably a particularly pure air volume flow.
- the test volume flow has at least substantially no admixtures of a fuel.
- ignition volume flow is to be understood as meaning, in particular, a volume flow which is required for optimal ignition of the burner system, in particular for igniting a burner of the burner system.
- the ignition volume flow is between a minimum volume flow that can be generated within the burner system and a maximum flow that can be generated within the burner system.
- the ignition volume flow is an air volume flow or a fuel-air volume flow.
- the ignition volume flow at the beginning of an ignition process is a pure air volume flow to which a fuel is mixed in the course of the ignition process.
- the pressure characteristic value is detected and / or evaluated in particular during the presence of the test volume flow, whereby a blockade of the exhaust gas discharge can be deduced directly on the basis of the pressure characteristic value.
- a rise in the pressure characteristic value caused, in particular, by a blockage of a gas flow within the exhaust gas discharge is detected via a setpoint, in particular stored, and evaluated in such a way that a blockage of the exhaust gas removal is reliably established.
- an improved method for detecting a blockage of an exhaust gas removal of a burner system can be provided.
- an advantageously safe and / or reliable detection of blockages can be achieved by the test volume flow generated for the detection of a blockage which is greater than an ignition volume flow of the burner system.
- partial blockages can also advantageously be detected, which would otherwise only be detectable during full-load operation of the burner system.
- test volume flow is generated upon request of a burner operation of the burner system.
- the test volume flow is generated in particular immediately after a request for burner operation of the burner system.
- the generation of the test volume flow is in particular independent of the requested burner output.
- test volume flow is generated before ignition of the burner system.
- an ignition of the burner system takes place after an evaluation of the pressure characteristic value detected during the presence of the test volume flow.
- blockages of the exhaust gas removal can advantageously be detected before ignition of the burner system.
- the burner system is put out of operation when a limit value is exceeded by the pressure characteristic value during the presence of the test volume flow.
- the burner system is "put out of operation" is to be understood in particular that the burner system is placed in particular in a fault mode, in which in particular an influx of fuel into the burner system and igniting the burner system is prevented, and / or completely switched off .
- an operator and / or operator of the burner system can be issued an error and / or warning message when exceeding a limit value by the pressure characteristic value, which indicates that there is a blockage of the exhaust gas removal.
- an advantageously safe operation of the burner system can be achieved.
- an enrichment of an ambient air with combustion exhaust gases, in particular with carbon monoxide which can no longer be sufficiently dissipated due to a blockage of the exhaust gas removal, can be advantageously prevented.
- test volume flow is reduced to the ignition volume flow before ignition of the burner system.
- test volume flow while maintaining the limit value by the pressure characteristic value during the presence of the test volume flow, for the ignition of the burner system is reduced so that it corresponds to the flow value of the ignition volume flow.
- the burner system can advantageously be displaced simply and / or quickly from a test mode in an ignition mode.
- a fan of the burner system for generating the vomvolumenstroms is temporarily operated at a speed which is above a speed for generating the Zündvolumenstroms.
- a burner device with a test unit for detecting a blockage of an exhaust gas outlet of a burner system, wherein the test unit has at least one pressure sensor which is provided to detect at least one pressure characteristic, wherein the test unit is provided to generate a test volume flow for detecting the blockage , which is greater than a Zündvolumenstrom the burner system.
- a "test unit” is to be understood in particular as a unit designed as a hardware unit and / or at least partially as a software unit, which is intended to record and evaluate the print parameter, in particular directly, in particular by means of sensors and / or measuring sensors, as an operating measured value.
- the test unit may be at least partially formed integrally with a control and / or regulating unit of the burner system and / or connected thereto.
- a "control and / or regulating unit” is to be understood as meaning in particular a unit having at least one control electronics.
- control electronics is meant in particular a unit with a processor unit and with a memory unit and with an operating program stored in the memory unit.
- the pressure sensor may in particular be designed as an absolute pressure sensor, a differential pressure sensor and / or as a pressure switch. The pressure sensor is in particular provided to detect the pressure characteristic within the exhaust gas discharge.
- the test unit is intended to directly or indirectly, in particular via the control and / or control unit to control a fan of the burner system for generating the test volume flow.
- the test volume flow generated for the detection of a blockage which is greater than an ignition volume flow of the burner system an advantageously safe and / or reliable detection of blockages can be achieved.
- partial blockages can also advantageously be detected, which would otherwise only be detectable during full-load operation of the burner system.
- inventive method should not be limited to the application and embodiment described above.
- the method according to the invention can have a number deviating from a number of individual elements, components and units mentioned herein.
- the burner system 10 comprises a burner 24, a blower 14 and an exhaust gas discharge 20.
- the burner system 10 is supplied via a fuel feed line 26, a gaseous fuel 28, for example, a natural gas.
- a combustion air 32 is supplied to the burner system 10 via a combustion air feed line 30.
- the fuel 28 and the combustion air 32 are mixed to form an ignitable fuel mixture 34 and fed to the burner 24.
- the supply of the fuel mixture 34 takes place by means of the burner 24 upstream of the blower 14.
- the resulting during the combustion process in the burner 24 combustion exhaust gases 36 are discharged via the exhaust discharge 20.
- the burner system 10 has a valve 38, which is arranged in the fuel supply line 26.
- the valve 38 is preferably designed as an electronic control valve.
- the valve 38 is provided to control a fuel flow 40.
- the burner system 10 has a burner device 16 with a test unit 18 for detecting a blockage 12 of an exhaust gas discharge 20.
- the test unit 18 may in particular be at least partially formed in one piece with a control and / or regulating unit, not shown here, of the burner system 10 and / or connected thereto.
- the test unit 18 has a pressure sensor 22, which is provided to detect at least one pressure characteristic within the exhaust gas outlet 20.
- the pressure sensor 22 may in particular be designed as an absolute pressure sensor, a differential pressure sensor and / or preferably as a pressure switch.
- the test unit 18 is provided to generate a test volume flow for detecting the blockage 12, which is greater than an ignition volume flow of the burner system 10.
- the test unit 18 is provided to control the blower 14 to generate the test volume flow.
- the blower 14 of the burner system 10 is temporarily operated to generate the sketchvolumenstroms at a speed which is above a speed for generating the Zündvolumenstroms.
- the test unit 18 is provided to detect and evaluate the pressure characteristic value during the presence of the test volume flow by means of the pressure sensor 22. On the basis of the pressure characteristic can directly on a blockage 12 of the exhaust gas discharge 20 are closed. In particular, a rise in the pressure characteristic value caused by a blockage 12 in the exhaust gas discharge 20 caused by a blockage 12 is detected via a setpoint stored in the test unit 18 and evaluated to the effect that a blockage 12 of the exhaust gas discharge 20 can be reliably detected.
- FIG. 2 shows a flowchart of a method for detecting a blockage 12 of the exhaust discharge 20 of the burner system 10, in which the pressure characteristic value for detecting the blockage 12 is detected and / or evaluated.
- the test volume flow is generated in a method step 42.
- the test volume flow is greater than the ignition volume flow of the burner system 10.
- the test volume flow is generated immediately after request 44 of a burner operation of the burner system 10 and before ignition of the burner system 10.
- the blower 14 of the burner system 10 is temporarily operated to generate the strigvolumenstroms at a speed which is above a speed for generating the Zündvolumenstroms.
- the valve 38 is closed.
- the test volume flow is a pure air volume flow.
- the pressure characteristic value is detected and evaluated during the presence of the test volume flow.
- the burner system 10 is set at a threshold value exceeded by the pressure characteristic during a presence of the test volume flow in a further process step 48 out of service. If the limit value has not been exceeded, the test volume flow is reduced to the ignition volume flow before ignition of the burner system 10 in a further method step 50.
- the valve 38 is closed. The set in this way ignition flow is initially a pure air flow. After setting the Zündvolumenstroms the valve 38 is opened and the burner 24 ignited in a further method step 54. After opening the valve 38, the ignition volume flow is a required for ignition of the burner 24 fuel-air flow rate. After the ignition of the burner 24, the burner system 10 is in a normal burner operation 52 via.
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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)
Abstract
Die Erfindung geht aus von einem Verfahren zur Detektion einer Blockade (12) einer Abgasabführung (20) eines Brennersystems (10), bei welchem zumindest ein Druckkennwert zur Detektion der Blockade (12) erfasst und/oder ausgewertet wird. Es wird vorgeschlagen, dass zur Detektion der Blockade (12) ein Prüfvolumenstrom erzeugt wird, welcher größer ist als ein Zündvolumenstrom des Brennersystems (10).The invention is based on a method for detecting a blockage (12) of an exhaust gas discharge (20) of a burner system (10), in which at least one pressure characteristic value for detecting the blockage (12) is detected and / or evaluated. It is proposed that a test volume flow is generated for detecting the blockage (12), which is greater than an ignition volume flow of the burner system (10).
Description
Es ist bereits ein Verfahren zur Detektion einer Blockade einer Abgasabführung eines Brennersystems, bei welchem zumindest ein Druckkennwert innerhalb der Abgasabführung zur Detektion der Blockade erfasst und/oder ausgewertet wird, vorgeschlagen worden.A method has already been proposed for detecting a blockage of an exhaust gas outlet of a burner system, in which at least one pressure characteristic within the exhaust gas outlet is detected and / or evaluated for detecting the blockage.
Die Erfindung geht aus von einem Verfahren zur Detektion einer Blockade einer Abgasabführung eines Brennersystems, bei welchem zumindest ein Druckkennwert zur Detektion der Blockade erfasst und/oder ausgewertet wird.The invention is based on a method for detecting a blockage of an exhaust gas removal of a burner system, in which at least one pressure characteristic value for detecting the blockage is detected and / or evaluated.
Es wird vorgeschlagen, dass zur Detektion der Blockade ein Prüfvolumenstrom erzeugt wird, welcher größer ist als ein Zündvolumenstrom des Brennersystems.It is proposed that a test volume flow is generated to detect the blockage, which is greater than a Zündvolumenstrom the burner system.
Unter einem "Brennersystem" soll in diesem Zusammenhang insbesondere ein System verstanden werden, welches dazu vorgesehen ist, Energie, insbesondere Bioenergie und/oder vorzugsweise fossile Energie, insbesondere durch einen Verbrennungsprozess, in Wärme umzuwandeln. Unter "vorgesehen" soll insbesondere speziell programmiert, ausgelegt und/oder ausgestattet verstanden werden. Darunter, dass ein Objekt zu einer bestimmten Funktion vorgesehen ist, soll insbesondere verstanden werden, dass das Objekt diese bestimmte Funktion in zumindest einem Anwendungs- und/oder Betriebszustand erfüllt und/oder ausführt. Insbesondere weist das Brennersystem, zumindest einen Brenner, zumindest ein Gebläse zur Zuführung einer Verbrennungsluft und zumindest ein Brennstoffregelventil zur Zuführung eines Brennstoffs auf. Der Brenner ist insbesondere dazu vorgesehen ist, ein Gemisch, insbesondere ein Brennstoffgemisch aus einer Verbrennungsluft und einem Brennstoff, zu verbrennen. Der Brenner kann insbesondere als ein leistungsmodulierender Gasgebläsebrenner ausgebildet sein.In this context, a "burner system" is to be understood as meaning, in particular, a system which is intended to convert energy, in particular bioenergy and / or preferably fossil energy, into heat, in particular by means of a combustion process. By "provided" is intended to be understood in particular specially programmed, designed and / or equipped. The fact that an object is intended for a specific function should in particular mean that the object fulfills and / or executes this specific function in at least one application and / or operating state. In particular, the burner system, at least one burner, at least one fan for supplying a combustion air and at least one fuel control valve for supplying a fuel. The burner is in particular intended to burn a mixture, in particular a fuel mixture of a combustion air and a fuel. The burner can be designed, in particular, as a power-modulating gas-jet burner.
Unter einem "Brennstoffgemisch" soll in diesem Zusammenhang insbesondere ein zündfähiges Gemisch aus einem Brennstoff und einer Verbrennungsluft verstanden werden, welches dazu vorgesehen ist, einem Brenner eines Brennersystems zur Durchführung eines Verbrennungsprozesses zugeführt zu werden. Unter einem "Brennstoff" soll in diesem Zusammenhang vorzugsweise ein kohlenwasserstoffhaltiges Gas oder Gasgemisch, vorzugsweise ein Naturgas oder ein Naturgasgemisch, insbesondere ein Erdgas, ein Flüssiggas oder ein Biogas, welches zumindest ein Alkan, insbesondere Methan, Ethan, Propan und/oder Butan, umfasst, verstanden werden. Unter einer "Abgasabführung" soll insbesondere eine Hohlleitung oder ein Hohlleitungssystem verstanden werden, welches dazu vorgesehen ist, ein Verbrennungsabgas aus einem Brennersystem, insbesondere aus einer Brennkammer eines Brennersystems, auszuleiten. Unter einem "Druckkennwert" soll in diesem Zusammenhang insbesondere ein Kennwert verstanden werden, welcher zumindest eine Information über einen Druck innerhalb der Abgasabführung des Brennersystems enthält. Der Druckkennwert wird insbesondere, beispielsweise mittels eines Drucksensors und/oder mittels eines Druckschalters, innerhalb der Abgasabführung erfasst. Insbesondere wird anhand des Druckkennwerts auf eine Blockade der Abgasabführung geschlossen. Unter einer "Blockade der Abgasabführung" soll insbesondere verstanden werden, dass ein Gasstrom durch die Abgasabführung insbesondere durch Verschmutzung und/oder Fremdkörper derart gehemmt ist, dass Verbrennungsabgase nicht mehr in ausreichendem Maße abgeführt werden können.A "fuel mixture" is to be understood in this context, in particular an ignitable mixture of a fuel and a combustion air, which is intended to be supplied to a burner of a burner system for carrying out a combustion process. In this context, a "fuel" is preferably to be understood as meaning a hydrocarbon-containing gas or gas mixture, preferably a natural gas or a natural gas mixture, in particular a natural gas, a liquid gas or a biogas comprising at least one alkane, in particular methane, ethane, propane and / or butane to be understood. An "exhaust gas removal" is to be understood in particular as a hollow pipe or a hollow pipe system which is intended to discharge a combustion exhaust gas from a burner system, in particular from a combustion chamber of a burner system. In this context, a "pressure characteristic value" is to be understood as meaning, in particular, a characteristic value which contains at least information about a pressure within the exhaust gas removal of the burner system. The pressure characteristic is detected in particular, for example by means of a pressure sensor and / or by means of a pressure switch, within the exhaust gas removal. In particular, it is concluded on the basis of the pressure characteristic value to a blockage of the exhaust gas discharge. A "blockage of the exhaust gas removal" is to be understood in particular as meaning that a gas flow through the exhaust gas removal, in particular due to contamination and / or foreign bodies, is inhibited in such a way that combustion exhaust gases can no longer be dissipated to a sufficient extent.
Unter einem "Prüfvolumenstrom" soll in diesem Zusammenhang insbesondere ein Volumenstrom verstanden werden, welcher ausschließlich zur Detektion zu einer Blockade der Abgasabführung erzeugt wird. Insbesondere durchströmt der Prüfvolumenstrom das gesamte Brennersystem. Der Prüfvolumenstrom entspricht insbesondere zumindest im Wesentlichen einem insbesondere mittels eines Gebläses des Brennersystems maximal innerhalb des Brennersystems erzeugbaren Volumenstroms. Vorzugsweise ist der Prüfvolumenstrom ein insbesondere reiner Luftvolumenstrom. Insbesondere weist der Prüfvolumenstrom zumindest im Wesentlichen keine Beimengungen eines Brennstoffs auf. Unter einem "Zündvolumenstrom" soll in diesem Zusammenhang insbesondere ein Volumenstrom verstanden werden, welcher zu einer optimalen Zündung des Brennersystems, insbesondere zur Zündung eines Brenners des Brennersystems, benötigt wird. Der Zündvolumenstrom liegt insbesondere zwischen einem minimal innerhalb des Brennersystems erzeugbaren und einem maximal innerhalb des Brennersystems erzeugbaren Volumenstrom. Vorzugsweise ist der Zündvolumenstrom ein Luftvolumenstrom oder ein Brennstoff-Luft-Volumenstrom. Insbesondere ist der Zündvolumenstrom zu Beginn eines Zündungsvorgangs ein reiner Luftvolumenstrom, welchem im Verlauf des Zündungsvorgangs ein Brennstoff beigemischt wird.In this context, a "test volume flow" is to be understood as meaning, in particular, a volumetric flow which is generated exclusively for the purpose of detecting a blockage of the exhaust gas removal. In particular, the test volume flow flows through the entire burner system. The test volume flow corresponds in particular at least substantially a volume flow which can be generated maximally within the burner system, in particular by means of a blower of the burner system. The test volume flow is preferably a particularly pure air volume flow. In particular, the test volume flow has at least substantially no admixtures of a fuel. In this context, a "ignition volume flow" is to be understood as meaning, in particular, a volume flow which is required for optimal ignition of the burner system, in particular for igniting a burner of the burner system. In particular, the ignition volume flow is between a minimum volume flow that can be generated within the burner system and a maximum flow that can be generated within the burner system. Preferably, the ignition volume flow is an air volume flow or a fuel-air volume flow. In particular, the ignition volume flow at the beginning of an ignition process is a pure air volume flow to which a fuel is mixed in the course of the ignition process.
Der Druckkennwert wird insbesondere während eines Vorliegens des Prüfvolumenstroms erfasst und/oder ausgewertet, wodurch unmittelbar anhand des Druckkennwerts auf eine Blockade der Abgasabführung geschlossen werden kann. Insbesondere wird ein insbesondere durch eine Blockade hervorgerufene Störung einer Gasströmung innerhalb der Abgasabführung verursachtes Ansteigen des Druckkennwerts über einen insbesondere hinterlegten Sollwert erfasst und dahingehend auswertet, dass eine Blockade der Abgasabführung sicher festgestellt wird.The pressure characteristic value is detected and / or evaluated in particular during the presence of the test volume flow, whereby a blockade of the exhaust gas discharge can be deduced directly on the basis of the pressure characteristic value. In particular, a rise in the pressure characteristic value caused, in particular, by a blockage of a gas flow within the exhaust gas discharge is detected via a setpoint, in particular stored, and evaluated in such a way that a blockage of the exhaust gas removal is reliably established.
Durch eine derartige Ausgestaltung kann ein verbessertes Verfahren zur Detektion einer Blockade einer Abgasabführung eines Brennersystems bereitgestellt werden. Insbesondere kann durch den zur Detektion einer Blockade erzeugte Prüfvolumenstrom, welcher größer ist als ein Zündvolumenstrom des Brennersystems eine vorteilhaft sichere und/oder zuverlässige Detektion von Blockaden erreicht werden. Insbesondere können auch vorteilhaft auch teilweise Blockaden detektiert werden, welche sonst lediglich bei einem Volllastbetrieb des Brennersystems detektierbar wären. Durch eine frühzeitige Erkennung von Blockaden der Abgasabführung kann ein vorteilhaft sicherer Betrieb eines Brennersystems erreicht werden.By such a configuration, an improved method for detecting a blockage of an exhaust gas removal of a burner system can be provided. In particular, an advantageously safe and / or reliable detection of blockages can be achieved by the test volume flow generated for the detection of a blockage which is greater than an ignition volume flow of the burner system. In particular, partial blockages can also advantageously be detected, which would otherwise only be detectable during full-load operation of the burner system. By early detection of blockages of the exhaust gas outlet, an advantageously safe operation of a burner system can be achieved.
Ferner wird vorgeschlagen, dass der Prüfvolumenstrom nach Anforderung eines Brennerbetriebs des Brennersystems erzeugt wird. Der Prüfvolumenstrom wird insbesondere unmittelbar nach einer Anforderung eines Brennerbetriebs des Brennersystems erzeugt. Die Erzeugung des Prüfvolumenstroms ist insbesondere unabhängig von der angeforderten Brennerleistung. Hierdurch kann eine vorteilhaft frühzeitige Detektion einer Blockade der Abgasabführung erreicht werden.It is also proposed that the test volume flow is generated upon request of a burner operation of the burner system. The test volume flow is generated in particular immediately after a request for burner operation of the burner system. The generation of the test volume flow is in particular independent of the requested burner output. As a result, an advantageously early detection of a blockage of the exhaust gas removal can be achieved.
Zudem wird vorgeschlagen, dass der Prüfvolumenstrom vor einer Zündung des Brennersystems erzeugt wird. Insbesondere erfolgt eine Zündung des Brennersystems nach einer Auswertung des während des Vorliegens des Prüfvolumenstroms erfassten Druckkennwerts. Hierdurch können Blockaden der Abgasabführung vorteilhaft vor einer Zündung des Brennersystems detektiert werden.In addition, it is proposed that the test volume flow is generated before ignition of the burner system. In particular, an ignition of the burner system takes place after an evaluation of the pressure characteristic value detected during the presence of the test volume flow. As a result, blockages of the exhaust gas removal can advantageously be detected before ignition of the burner system.
Des Weiteren wird vorgeschlagen, dass das Brennersystem bei einem Überschreiten eines Grenzwerts durch den Druckkennwert während eines Vorliegens des Prüfvolumenstroms außer Betrieb gesetzt wird. Darunter, dass das Brennersystem "außer Betrieb gesetzt wird" soll insbesondere verstanden werden, dass das Brennersystem insbesondere in einen Störungsmodus versetzt wird, in welchem insbesondere ein Einströmen von Brennstoff in das Brennersystem und ein Zünden des Brennersystems verhindert wird, und/oder vollständig ausgeschaltet wird. Insbesondere kann einem Betreiber und/oder Bediener des Brennersystems bei einem Überschreiten eines Grenzwerts durch den Druckkennwert eine Fehler- und/oder Warnmeldung ausgegeben werden, welche ihn auf das Vorliegen einer Blockade der Abgasabführung hinweist. Hierdurch kann ein vorteilhaft sicherer Betrieb des Brennersystems erreicht werden. Insbesondere kann eine Anreicherung einer Umgebungsluft mit Verbrennungsabgasen, insbesondere mit Kohlenmonoxid, welche aufgrund einer Blockade der Abgasabführung nicht mehr in ausreichendem Maße abgeführt werden können, vorteilhaft verhindert werden.Furthermore, it is proposed that the burner system is put out of operation when a limit value is exceeded by the pressure characteristic value during the presence of the test volume flow. By the fact that the burner system is "put out of operation" is to be understood in particular that the burner system is placed in particular in a fault mode, in which in particular an influx of fuel into the burner system and igniting the burner system is prevented, and / or completely switched off , In particular, an operator and / or operator of the burner system can be issued an error and / or warning message when exceeding a limit value by the pressure characteristic value, which indicates that there is a blockage of the exhaust gas removal. In this way, an advantageously safe operation of the burner system can be achieved. In particular, an enrichment of an ambient air with combustion exhaust gases, in particular with carbon monoxide, which can no longer be sufficiently dissipated due to a blockage of the exhaust gas removal, can be advantageously prevented.
Ferner wird vorgeschlagen, dass der Prüfvolumenstrom vor einer Zündung des Brennersystems auf den Zündvolumenstrom reduziert wird. Insbesondere wird der Prüfvolumenstrom, bei Einhalten des Grenzwerts durch den Druckkennwert während des Vorliegens des Prüfvolumenstroms, zur Zündung des Brennersystems derart reduziert, dass er dem Durchflusswert des Zündvolumenstroms entspricht. Hierdurch kann das Brennersystem vorteilhaft einfach und/oder schnell von einem Prüfbetrieb in einem Zündungsbetrieb versetzt werden.It is also proposed that the test volume flow is reduced to the ignition volume flow before ignition of the burner system. In particular, the test volume flow, while maintaining the limit value by the pressure characteristic value during the presence of the test volume flow, for the ignition of the burner system is reduced so that it corresponds to the flow value of the ignition volume flow. As a result, the burner system can advantageously be displaced simply and / or quickly from a test mode in an ignition mode.
Des Weiteren wird vorgeschlagen, dass ein Gebläse des Brennersystems zur Erzeugung des Prüfvolumenstroms temporär mit einer Drehzahl betrieben wird, welche oberhalb einer Drehzahl zur Erzeugung des Zündvolumenstroms liegt. Durch die Verwendung eines Gebläses des Brennersystems kann vorteilhaft einfach ein Prüfvolumenstrom erzeugt werden.Furthermore, it is proposed that a fan of the burner system for generating the Prüfvolumenstroms is temporarily operated at a speed which is above a speed for generating the Zündvolumenstroms. By using a blower of the burner system advantageously a test volume flow can be generated.
Zudem wird eine Brennervorrichtung mit einer Prüfeinheit zur Detektion einer Blockade einer Abgasabführung eines Brennersystems, wobei die Prüfeinheit zumindest einen Drucksensor aufweist, der dazu vorgesehen ist, zumindest einen Druckkennwert zu erfassen, wobei die Prüfeinheit dazu vorgesehen ist, zur Detektion der Blockade einen Prüfvolumenstrom zu erzeugen, welcher größer ist als ein Zündvolumenstrom des Brennersystems. Unter einer "Prüfeinheit" soll in diesem Zusammenhang insbesondere eine als Hardwareeinheit und/oder zumindest teilweise als Softwareeinheit ausgebildete Einheit verstanden werden, welche dazu vorgesehen ist, den Druckparameter insbesondere direkt, insbesondere mittels Sensoren und/oder Messfühlern, als Betriebsmesswert zu erfassen und auszuwerten. Insbesondere kann die Prüfeinheit zumindest teilweise einstückig mit einer Steuer- und/oder Regeleinheit des Brennersystems ausgebildet und/oder mit dieser verbunden sein. Unter einer "Steuer- und/oder Regeleinheit" soll insbesondere eine Einheit mit zumindest einer Steuerelektronik verstanden werden. Unter einer "Steuerelektronik" soll insbesondere eine Einheit mit einer Prozessoreinheit und mit einer Speichereinheit sowie mit einem in der Speichereinheit gespeicherten Betriebsprogramm verstanden werden. Der Drucksensor kann insbesondere als ein Absolutdrucksensor, ein Differenzdrucksensor und/oder als ein Druckschalter ausgebildet sein. Der Drucksensor ist insbesondere dazu vorgesehen, den Druckkennwert innerhalb der Abgasabführung zu erfassen. Insbesondere ist die Prüfeinheit dazu vorgesehen, unmittelbar oder mittelbar, insbesondere über die Steuer und-/oder Regeleinheit, ein Gebläse des Brennersystems zur Erzeugung des Prüfvolumenstroms anzusteuern. Hierdurch kann ein Brennersystem mit verbesserten Betriebseigenschaften bereitgestellt werden. Insbesondere kann durch den zur Detektion einer Blockade erzeugte Prüfvolumenstrom, welcher größer ist als ein Zündvolumenstrom des Brennersystems eine vorteilhaft sichere und/oder zuverlässige Detektion von Blockaden erreicht werden. Insbesondere können auch vorteilhaft auch teilweise Blockaden detektiert werden, welche sonst lediglich bei einem Volllastbetrieb des Brennersystems detektierbar wären. Durch eine frühzeitige Erkennung von Blockaden der Abgasabführung kann ein vorteilhaft sicherer Betrieb eines Brennersystems erreicht werden.In addition, a burner device with a test unit for detecting a blockage of an exhaust gas outlet of a burner system, wherein the test unit has at least one pressure sensor which is provided to detect at least one pressure characteristic, wherein the test unit is provided to generate a test volume flow for detecting the blockage , which is greater than a Zündvolumenstrom the burner system. In this context, a "test unit" is to be understood in particular as a unit designed as a hardware unit and / or at least partially as a software unit, which is intended to record and evaluate the print parameter, in particular directly, in particular by means of sensors and / or measuring sensors, as an operating measured value. In particular, the test unit may be at least partially formed integrally with a control and / or regulating unit of the burner system and / or connected thereto. A "control and / or regulating unit" is to be understood as meaning in particular a unit having at least one control electronics. By "control electronics" is meant in particular a unit with a processor unit and with a memory unit and with an operating program stored in the memory unit. The pressure sensor may in particular be designed as an absolute pressure sensor, a differential pressure sensor and / or as a pressure switch. The pressure sensor is in particular provided to detect the pressure characteristic within the exhaust gas discharge. In particular, the test unit is intended to directly or indirectly, in particular via the control and / or control unit to control a fan of the burner system for generating the test volume flow. This can provide a burner system with improved operating characteristics. In particular, by the test volume flow generated for the detection of a blockage, which is greater than an ignition volume flow of the burner system an advantageously safe and / or reliable detection of blockages can be achieved. In particular, partial blockages can also advantageously be detected, which would otherwise only be detectable during full-load operation of the burner system. By early detection of blockages of the exhaust gas outlet, an advantageously safe operation of a burner system can be achieved.
Das erfindungsgemäße Verfahren soll hierbei nicht auf die oben beschriebene Anwendung und Ausführungsform beschränkt sein. Insbesondere kann das erfindungsgemäße Verfahren zu einer Erfüllung einer hierin beschriebenen Funktionsweise eine von einer hierin genannten Anzahl von einzelnen Elementen, Bauteilen und Einheiten abweichende Anzahl aufweisen.The inventive method should not be limited to the application and embodiment described above. In particular, in order to fulfill a mode of operation described herein, the method according to the invention can have a number deviating from a number of individual elements, components and units mentioned herein.
Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Die Zeichnung, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen.Further advantages emerge from the following description of the drawing. In the drawing, an embodiment of the invention is shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.
Es zeigen:
- Fig. 1
- eine schematische Darstellung eines Brennersystems mit einer Brennervorrichtung, die eine Prüfeinheit zur Detektion einer Blockade einer Abgasabführung des Brennersystems aufweist, und
- Fig. 2
- Ablaufdiagramm eines Verfahrens zur Detektion einer Blockade der Abgasabführung des Brennersystems.
- Fig. 1
- a schematic representation of a burner system with a burner device having a test unit for detecting a blockage of an exhaust gas discharge of the burner system, and
- Fig. 2
- Flowchart of a method for detecting a blockage of the exhaust gas removal of the burner system.
Ferner weist das Brennersystem 10 eine Brennervorrichtung 16 mit einer Prüfeinheit 18 zur Detektion einer Blockade 12 einer Abgasabführung 20 auf. Die Prüfeinheit 18 kann insbesondere zumindest teilweise einstückig mit einer hier nicht dargestellten Steuer- und/oder Regeleinheit des Brennersystems 10 ausgebildet sein und/oder mit dieser verbunden sein. Die Prüfeinheit 18 weist einen Drucksensor 22 auf, der dazu vorgesehen ist, zumindest einen Druckkennwert innerhalb der Abgasabführung 20 zu erfassen. Der Drucksensor 22 kann insbesondere als ein Absolutdrucksensor, ein Differenzdrucksensor und/oder vorzugsweise als ein Druckschalter ausgebildet sein. Die Prüfeinheit 18 ist dazu vorgesehen, zur Detektion der Blockade 12 einen Prüfvolumenstrom zu erzeugen, welcher größer ist als ein Zündvolumenstrom des Brennersystems 10. Die Prüfeinheit 18 ist dazu vorgesehen, zur Erzeugung des Prüfvolumenstroms das Gebläse 14 anzusteuern. Das Gebläse 14 des Brennersystems 10 wird zur Erzeugung des Prüfvolumenstroms temporär mit einer Drehzahl betrieben, welche oberhalb einer Drehzahl zur Erzeugung des Zündvolumenstroms liegt. Die Prüfeinheit 18 ist dazu vorgesehen, den Druckkennwert während eines Vorliegens des Prüfvolumenstroms mittels des Drucksensors 22 zu erfassen und auszuwerten. Anhand des Druckkennwerts kann unmittelbar auf eine Blockade 12 der Abgasabführung 20 geschlossen werden. Insbesondere wird durch die Prüfeinheit 18 ein durch eine Blockade 12 hervorgerufene Störung einer Gasströmung innerhalb der Abgasabführung 20 verursachtes Ansteigen des Druckkennwerts über einen in der Prüfeinheit 18 hinterlegten Sollwert erfasst und dahingehend auswertet, dass eine Blockade 12 der Abgasabführung 20 sicher festgestellt werden kann.Furthermore, the
Claims (10)
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EP16175599.6A EP3260777B1 (en) | 2016-06-22 | 2016-06-22 | Method for detecting a blockade of a flue gas discharge of a burner system and burner system |
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EP16175599.6A EP3260777B1 (en) | 2016-06-22 | 2016-06-22 | Method for detecting a blockade of a flue gas discharge of a burner system and burner system |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3896340A1 (en) * | 2020-04-17 | 2021-10-20 | Vaillant GmbH | Method for detecting a current or imminent blockage of at least one flow path |
EP4134588A1 (en) * | 2021-04-15 | 2023-02-15 | Vaillant GmbH | Method for testing a waste gas system of a heater |
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GB2105888A (en) * | 1981-09-15 | 1983-03-30 | Worcester Engineering Company | Detecting flue blockage |
EP0898120A1 (en) * | 1996-05-09 | 1999-02-24 | Gastar Co., Ltd. | Combustion equipment and method of judging life of combustion equipment |
CA2544994A1 (en) * | 2006-04-27 | 2007-10-27 | Fabricant De Poeles International Inc. | Flue obstruction detector for oil-fired space heaters |
WO2013117516A1 (en) * | 2012-02-09 | 2013-08-15 | Sit La Precisa S.P.A. Con Socio Unico | A method for controlling a burner of a boiler and a control system operating according to this method |
Family Cites Families (1)
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JP2000304255A (en) * | 1999-02-19 | 2000-11-02 | Rinnai Corp | Supply and exhaust cylinder clogging detecting device for forced supply exhaust type combustion device |
-
2016
- 2016-06-22 EP EP16175599.6A patent/EP3260777B1/en active Active
Patent Citations (4)
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GB2105888A (en) * | 1981-09-15 | 1983-03-30 | Worcester Engineering Company | Detecting flue blockage |
EP0898120A1 (en) * | 1996-05-09 | 1999-02-24 | Gastar Co., Ltd. | Combustion equipment and method of judging life of combustion equipment |
CA2544994A1 (en) * | 2006-04-27 | 2007-10-27 | Fabricant De Poeles International Inc. | Flue obstruction detector for oil-fired space heaters |
WO2013117516A1 (en) * | 2012-02-09 | 2013-08-15 | Sit La Precisa S.P.A. Con Socio Unico | A method for controlling a burner of a boiler and a control system operating according to this method |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3896340A1 (en) * | 2020-04-17 | 2021-10-20 | Vaillant GmbH | Method for detecting a current or imminent blockage of at least one flow path |
EP4134588A1 (en) * | 2021-04-15 | 2023-02-15 | Vaillant GmbH | Method for testing a waste gas system of a heater |
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