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EP4397907A1 - Commande de capteur de combustion - Google Patents

Commande de capteur de combustion Download PDF

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Publication number
EP4397907A1
EP4397907A1 EP23186356.4A EP23186356A EP4397907A1 EP 4397907 A1 EP4397907 A1 EP 4397907A1 EP 23186356 A EP23186356 A EP 23186356A EP 4397907 A1 EP4397907 A1 EP 4397907A1
Authority
EP
European Patent Office
Prior art keywords
flame
change
sensor
sensor configuration
combustion appliance
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.)
Withdrawn
Application number
EP23186356.4A
Other languages
German (de)
English (en)
Inventor
Alexander Diebold
Armin Spitznas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP4397907A1 publication Critical patent/EP4397907A1/fr
Withdrawn legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/002—Regulating fuel 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
    • F23N5/24—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/26—Details
    • F23N5/265—Details using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/9901—Combustion process using hydrogen, hydrogen peroxide water or brown gas as fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors

Definitions

  • the instant disclosure relates to burners and boilers which burn fluid fuels, preferably gaseous fuels, preferably during continuous operation.
  • the function of the flame monitoring sensor shall be tested regularly, preferably according to DIN EN298 in the latest accepted version of DIN EN 298:2012-11, or in the draft version of DIN EN 298:2020-09.
  • the flame monitoring sensor shall preferably be tested at each burner start-up sequence. Intermitted Systems are usually designed to remain in the running position for less than 24 hours.
  • a control system is proposed.
  • the control system is configured for automatically testing a flame sensor configuration.
  • the flame sensor configuration is configured for monitoring the functioning of a combustion appliance by monitoring a flame of the combustion appliance.
  • the control system is adapted for processing a control signal related to an intended causing of the combustion appliance to change an operation parameter resulting in a change of a characteristic of the flame.
  • the characteristic is detectable by the flame sensor configuration.
  • the control system is furthermore adapted for receiving and processing a sensor signal received from the sensor configuration, said sensor signal carrying an information detected by the flame sensor configuration about the characteristic of the flame.
  • the processing of the sensor signal comprises assessing whether the intended change of the characteristic of the flame actually is detected by the flame sensor configuration.
  • a flame sensor configuration for monitoring the functioning of a combustion appliance comprises said control system, and a flame sensor for generating the sensor signal based on detecting the characteristic of the flame.
  • the combustion appliance comprises said flame sensor configuration, and a burner, wherein the burner is configured to generate said flame.
  • a method for automatically testing a flame sensor configuration is proposed.
  • the flame sensor configuration is adapted for monitoring the functioning of a combustion appliance by monitoring a flame of a combustion appliance.
  • an operation parameter of the combustion appliance is changed.
  • the characteristic is detectable by the flame sensor configuration.
  • the change of the operation parameter results in a change of a characteristic of the flame.
  • the flame sensor configuration is then tested by automatically assessing whether the intended change of the characteristic of the flame is actually detected by the flame sensor configuration.
  • a computer-readable medium is proposed.
  • the computer-readable medium has stored there on the proposed computer program.
  • the combustion appliance is adapted for burning a fluid fuel in a controlled manner in order to produce the flame.
  • a combustion appliance to change an operation parameter resulting in a change of a characteristic of the flame in a simple manner.
  • fluid fuels are more dangerous in case of a failure of the combustion appliance. This risk can be reduced according to these embodiments.
  • gaseous fuels bear an even higher risk than liquid fuels, because they can accumulate in a building or facility and result in dangerous explosions when ignited.
  • the combustion appliance is therefore adapted for burning gaseous fuels, for example for burning ethane, methane, propane, butane, or hydrogen (H2), natural gas, biogas, carbon monoxide, or other combustible gases.
  • gaseous fuel can comprise any suitable gaseous fuel, including any suitable mixture of the previously mentioned gaseous fuels.
  • the combustion appliance is adapted for burning liquid fuel, such as for example fuel oil, diesel, alcohol, other liquid fuels, or any suitable mixture of these liquid fuels.
  • liquid fuel such as for example fuel oil, diesel, alcohol, other liquid fuels, or any suitable mixture of these liquid fuels.
  • the flame sensor configuration is a light sensor configuration comprising at least one light sensor adapted and arranged for detecting light emitted by the flame.
  • This allows for a simple and cost-effective solution for monitoring a flame.
  • "Light" is thereby not limited to the visible spectrum of light. Instead, light encompasses any electromagnetic radiation suitable for representing the change in the characteristic of the flame.
  • the light sensor can therefor also be an infrared sensor or an ultraviolet sensor, since many combustion appliances produce flames emitting light in infrared, visible, and/or ultraviolet spectrum.
  • the light sensor can be a sensor detecting ultraviolet light.
  • Ultraviolet sensors are particularly well suited for detecting flames produced by gaseous fuels, since, as a rule of thumb, gaseous fuels emit mainly in the ultraviolet spectrum and in the infrared spectrum.
  • gaseous fuels emit mainly in the ultraviolet spectrum and in the infrared spectrum.
  • infrared detectors for detecting a change in a flame produced by a gaseous fuel, infrared detectors, and detectors detecting visible light can also be used.
  • the flame sensor configuration comprises an analogue sensor signal output which is used for said testing of the flame sensor configuration. This allows for a reliable means for detecting changes in flame characteristics, and transporting said characteristics in the sensor signal.
  • the sensor signal is suited to indicate changes in the characteristic of the flame.
  • the signal thereby transports the change in the characteristic of the flame in a more detailed manner than only a simple one-digit binary. This allows the sensor signal to transport an information describing the change of the characteristic of the flame in a quantitative manner, and thus allows to test the flame sensor configuration while the combustion appliance is operative. In other words, this allows to test the combustion appliance without the flame going out.
  • the characteristic of the flame is a frequency and/or an amplitude.
  • the flame might become erratic and show significant fluctuations. These fluctuations can be in the amplitude and/or in the frequency.
  • the signal represents an increase or a decrease of a characteristic of the flame.
  • the testing of the flame is performed during continuous operation of the combustion appliance.
  • the control signal is related to an intended causing of the combustion appliance to change an operation parameter during continuous operation of the flame.
  • the sensor signal is generated by the control system and in case the combustion appliance works properly, said control signal causes to the combustion appliance to change the operation parameter.
  • the sensor configuration is preferably configured to detect at least two different values of the characteristic of the flame, each different value of the characteristic corresponding to at least one different value of the operation parameter of the flame.
  • the sensor configuration is configured to detect at least three different values of the characteristic of the flame, at least two of the at least three detectable different values of the characteristic corresponding to at least one different value of the operation parameter of the flame, and at least one of the at least three detectable different values of the characteristic corresponding to a switched off flame.
  • the testing of the flame sensor configuration is initiated at predetermined moments.
  • the control signal related to the intended causing of the combustion appliance to change an operation parameter resulting in a change of a characteristic of the flame is generated at predetermined moments or regular intervals.
  • the changing of the operation parameter of the combustion appliance is performed by changing an amount of fuel applied to the flame and/or by changing an amount of combustion air applied to the flame.
  • the changing can thereby be performed by changing a ratio of fuel to combustion air.
  • the changing can also be performed by changing at least one absolute amount of fuel and/or combustion air.
  • the changing of the operation parameter of the combustion appliance is performed by changing or switching off a recirculation of exhaust gas.
  • control system 1 can be, but does not need to be arranged in one single casing or integrated circuit or controller or computer or the like.
  • Control system 1 can also be a distributed control system, such that parts of the control system are physically included in other parts of the combustion appliance 3 or flame sensor configuration 2.
  • a flame guard is arranged in a communication path between a flame 21 sensor and a burner control unit 15. The flame guard initiates the flame sensor test by generating the control signal 11.
  • the value of the control signal 11 is 0 (zero) from time 0 a.u. to 100 a.u. Value zero for the amplitude of the control signal 11 causes the burner 31 not to change the operation parameter 32 of combustion appliance 3, such that the burner 31 will operate according to the conditions set manually or automatically by the combustion control system which can be integrated into the control system 1.
  • the burner 31 is supplied with a substantially constant amount of fuel or combustion air or fuel-air-mixture, however, there can be arbitrary fluctuations in the combustion process, which is represented by fluctuations in the sensor signal 12.
  • the value of the control signal 11 is switched by the control system 1 to an amplitude value of 1.
  • Value 1 for the amplitude of the control signal 11 causes the burner 31 to change the operation parameter 32 of the combustion appliance, such that the flame 9 is supplied with a different amount fuel or combustion air or fuel-air-mixture than during the time interval from 0 to 100 a.u. Also, during this time interval, the burner 31 is supplied with a substantially constant amount of fuel or combustion air or fuel-air-mixture.
  • the instant disclosure also deals with a combustion appliance (3) comprising a burner (31), and any of the aforementioned flame sensor configurations (2), wherein the burner (31) is configured to generate the flame (9), preferably by burning a fluid fuel.
  • the present disclosure is still further directed to any of the aforementioned flame sensor configurations (2), wherein the control signal (11) is related to an intended causing of the combustion appliance to change an operation parameter during continuous operation of the flame.
  • the present disclosure is also still directed to any of the aforementioned combustion appliances (3), wherein the changing of the operation parameter of the combustion appliance (3) is a changing of an amount of fuel applied to the flame (9) and/or a changing of an amount of combustion air applied to the flame (9).
  • the present disclosure is also directed to any of the aforementioned methods, wherein the testing of the flame (9) is performed during continuous operation of the combustion appliance (3).
  • the present disclosure is still further directed to any of the aforementioned methods, wherein the changing of the operation parameter of the combustion appliance (3) is performed by changing an amount of fuel applied to the flame (9) and/or by changing an amount of combustion air applied to the flame (9).
  • the present disclosure is yet further directed a computer program comprising instructions to cause a control system (1) of a flame sensor configuration (2) as explained in detail before to execute the steps of the aforementioned methods.
  • the present disclosure is also directed a computer-readable medium having stored thereon any of the aforementioned computer program.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
EP23186356.4A 2023-01-04 2023-07-19 Commande de capteur de combustion Withdrawn EP4397907A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23150337 2023-01-04

Publications (1)

Publication Number Publication Date
EP4397907A1 true EP4397907A1 (fr) 2024-07-10

Family

ID=84819969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23186356.4A Withdrawn EP4397907A1 (fr) 2023-01-04 2023-07-19 Commande de capteur de combustion

Country Status (1)

Country Link
EP (1) EP4397907A1 (fr)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5049063A (en) * 1988-12-29 1991-09-17 Toyota Jidosha Kabushiki Kaisha Combustion control apparatus for burner
DE4206555A1 (de) 1991-03-11 1992-09-24 Mitsubishi Electric Corp Fotoelektrischer wandlerschaltkreis, sowie system hiermit
DE19645555A1 (de) 1995-11-10 1997-05-15 Landis & Gyr Tech Innovat Flammenfühler eines sich selbstüberwachenden Flammenwächters
DE19841475C1 (de) 1998-09-10 2000-02-03 Electrowatt Tech Innovat Corp Flammenüberwachungssystem und Verfahren zur Überwachung einer Flamme
US20020048737A1 (en) * 2000-09-05 2002-04-25 Siemens Building Technologies Ag Regulating device for an air ratio-regulated burner
WO2005052451A1 (fr) * 2003-11-25 2005-06-09 Nuvera Fuel Cells, Inc. Configuration de capteur de commande de chaudiere
DE102004028473A1 (de) 2004-06-11 2005-12-29 Lamtec Leipzig Gmbh & Co.Kg Vorrichtung zum Überprüfen einer Flammenüberwachungseinrichtung für Feuerungsanlagen
EP2439451A1 (fr) 2010-10-08 2012-04-11 BFI Automation Dipl.-Ing. Kurt-Henry Mindermann GmbH Dispositif de détection de la présence d'une flamme
EP3339736B1 (fr) 2016-12-21 2019-04-10 Siemens Aktiengesellschaft Détection de flamme pour appareils de combustion
EP3734159A1 (fr) * 2019-04-29 2020-11-04 ebm-papst Landshut GmbH Procédé de vérification d'un capteur de mélange gazeux dans un appareil chauffant fonctionnant au gaz combustible
EP3916693A1 (fr) * 2020-05-28 2021-12-01 Bosch Thermotechnology Ltd (UK) Procédé de fonctionnement d'un dispositif de protection contre les pannes d'un détecteur de flamme
EP3663648B1 (fr) * 2018-12-05 2022-08-31 Vaillant GmbH Dispositif de régulation du rapport de mélange de l'air de combustion et de gaz de combustion dans un processus de combustion

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5049063A (en) * 1988-12-29 1991-09-17 Toyota Jidosha Kabushiki Kaisha Combustion control apparatus for burner
DE4206555A1 (de) 1991-03-11 1992-09-24 Mitsubishi Electric Corp Fotoelektrischer wandlerschaltkreis, sowie system hiermit
DE19645555A1 (de) 1995-11-10 1997-05-15 Landis & Gyr Tech Innovat Flammenfühler eines sich selbstüberwachenden Flammenwächters
DE19841475C1 (de) 1998-09-10 2000-02-03 Electrowatt Tech Innovat Corp Flammenüberwachungssystem und Verfahren zur Überwachung einer Flamme
US20020048737A1 (en) * 2000-09-05 2002-04-25 Siemens Building Technologies Ag Regulating device for an air ratio-regulated burner
WO2005052451A1 (fr) * 2003-11-25 2005-06-09 Nuvera Fuel Cells, Inc. Configuration de capteur de commande de chaudiere
DE102004028473A1 (de) 2004-06-11 2005-12-29 Lamtec Leipzig Gmbh & Co.Kg Vorrichtung zum Überprüfen einer Flammenüberwachungseinrichtung für Feuerungsanlagen
EP2439451A1 (fr) 2010-10-08 2012-04-11 BFI Automation Dipl.-Ing. Kurt-Henry Mindermann GmbH Dispositif de détection de la présence d'une flamme
EP3339736B1 (fr) 2016-12-21 2019-04-10 Siemens Aktiengesellschaft Détection de flamme pour appareils de combustion
EP3663648B1 (fr) * 2018-12-05 2022-08-31 Vaillant GmbH Dispositif de régulation du rapport de mélange de l'air de combustion et de gaz de combustion dans un processus de combustion
EP3734159A1 (fr) * 2019-04-29 2020-11-04 ebm-papst Landshut GmbH Procédé de vérification d'un capteur de mélange gazeux dans un appareil chauffant fonctionnant au gaz combustible
EP3916693A1 (fr) * 2020-05-28 2021-12-01 Bosch Thermotechnology Ltd (UK) Procédé de fonctionnement d'un dispositif de protection contre les pannes d'un détecteur de flamme

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