EP1154203B2 - Dispositif de mesure pour une flamme - Google Patents

Dispositif de mesure pour une flamme Download PDF

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Publication number
EP1154203B2
EP1154203B2 EP01107100.8A EP01107100A EP1154203B2 EP 1154203 B2 EP1154203 B2 EP 1154203B2 EP 01107100 A EP01107100 A EP 01107100A EP 1154203 B2 EP1154203 B2 EP 1154203B2
Authority
EP
European Patent Office
Prior art keywords
flame
voltage
measuring device
signal
voltage component
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.)
Expired - Lifetime
Application number
EP01107100.8A
Other languages
German (de)
English (en)
Other versions
EP1154203B1 (fr
EP1154203A2 (fr
EP1154203A3 (fr
Inventor
Rainer Lochschmied
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 Schweiz AG
Original Assignee
Siemens Schweiz AG
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
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Application filed by Siemens Schweiz AG filed Critical Siemens Schweiz AG
Publication of EP1154203A2 publication Critical patent/EP1154203A2/fr
Publication of EP1154203A3 publication Critical patent/EP1154203A3/fr
Publication of EP1154203B1 publication Critical patent/EP1154203B1/fr
Application granted granted Critical
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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
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
    • F23N5/123—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electronic means

Definitions

  • the present invention relates to a measuring device for a flame according to claim 1.
  • the invention also relates to a control device for a burner with the measuring device for a flame according to claim 1.
  • the present invention has for its object to provide a measuring device for a flame of the type mentioned, which allows a more accurate and improved signal evaluation.
  • the alternating component influenced by the flame signal can be separated from the direct voltage component via first means and the separate alternating component can be compared to the separated direct voltage component via second means in order to generate a pulse-width-modulated signal.
  • adjustable signal range in a wide range, the high sensitivity and the large signal-to-noise ratio whether the flame is on or off and that the analog signal is very accurate and reproducible.
  • the signal transmission via an optocoupler is possible, with both information, flame on and off and PWM signal can be transmitted via only one optocoupler.
  • the ionization electrode can be made touch-proof.
  • Fig. 1 schematically shows the principle of operation of the inventive circuit.
  • Under 1 is in an equivalent circuit the in FIG. 2 shown flame 14 with ionization electrode 15 by a diode 1a and a resistor 1b.
  • an AC voltage of, for example, 230V is applied.
  • U B a positive DC voltage
  • U B a direct current flows from N to the blocking capacitor 3.
  • the amount of direct current depends on U B and thus directly from the flame resistance 1b.
  • the flame resistance 1b also influences the alternating current through the decoupling resistor 4, but to varying degrees compared to the direct current.
  • the resistor 4 thus flows a direct current and an alternating current as described above.
  • the resistor 4 is now followed by a high pass 5 and a low pass 6.
  • the high-pass 5 the alternating current is filtered out and blocked the DC component. Due to the low-pass filter, the DC component dependent on the flame resistance 1b is filtered out and the alternating current is essentially blocked.
  • the alternating current flowing from the high-pass filter 5 is amplified and a reference voltage U Ref is added.
  • the direct current flowing from the high-pass filter 6 is amplified with possibly small alternating current components and a reference voltage U Ref is added.
  • Both signals, the PWM signal and the flame signal can now be further processed separately or linked by means of an OR gate 12.
  • an OR gate 12 As an output of the OR gate 12, if there is a flame, a PWM signal is shown whose duty cycle is a measure of the flame resistance 1b. If no flame is present, the output of the OR gate is permanently at 1.
  • the PWM signal can be transmitted via an optocoupler, not shown, in order to achieve a protective separation between the mains side and the protective low voltage side.
  • FIG. 2 shows the actual structure of in FIG. 1 as an equivalent circuit 1 illustrated diode 1a and the resistor 1b, as he also for example from the DE 196 32 983 A1 is known.
  • a burner 13 By a burner 13, a flame 14 can be generated. In the flame area 14 protrudes an ionization electrode 15 which detects the ionization current. This depends on the flame resistance and thus the electrode temperature. The electrode temperature in turn depends on the lambda value and thus the excess air of the mixture to be burned. By means of the lambda value, the ratio of air to gas can be adjusted. Typically, the lambda value is chosen between 1.15 and 1.3 to achieve a higher than stoichiometric air to gas ratio

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Control Of Combustion (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Fire-Detection Mechanisms (AREA)

Claims (10)

  1. Dispositif de mesure pour une flamme, notamment pour l'utilisation dans un dispositif de réglage pour un brûleur (13), comprenant une électrode d'ionisation (15) disposée dans la zone de flamme (14) du brûleur, sur laquelle est connectée une tension alternative, sur quoi une fraction de tension continue se superpose en fonction du courant d'ionisation,
    caractérisé en ce
    que la fraction de tension alternative influencée par la résistance de la flamme est séparée de la fraction de tension continue par l'intermédiaire de premiers moyens (5, 6) et en ce que la tension alternative séparée est comparée à la fraction de tension continue séparée par l'intermédiaire de deuxièmes moyens (9, 10) afin de créer un signal à modulation d'impulsions en largeur.
  2. Dispositif de mesure selon la revendication 1,
    caractérisé en ce
    que la tension alternative et la fraction de tension continue sont séparées l'une de l'autre au moyen d'un filtre passe-haut (5) et d'un filtre passe-bas (6).
  3. Dispositif de mesure selon la revendication 1 ou 2,
    caractérisé en ce
    que la tension alternative et la fraction de tension continue sont comparées au moyen d'un comparateur (9).
  4. Dispositif de mesure selon l'une quelconque des revendications 1, 2 ou 3,
    caractérisé en ce
    que la fraction de tension continue est comparée à une tension de référence (URef) au moyen d'un comparateur (10) afin d'être utilisée comme signal de flamme.
  5. Dispositif de mesure selon la revendication 4,
    caractérisé en ce
    que le signal de flamme est appliqué à un monoflop déclenché (11) afin de former un signal de marche-arrêt statique.
  6. Dispositif de mesure selon l'une quelconque des revendications précédentes,
    caractérisé en ce
    que le signal de flamme déclenché par l'intermédiaire d'un monoflop (11) est relié au signal à modulation d'impulsions en largeur dans un élément OU (12).
  7. Dispositif de mesure selon la revendication 6,
    caractérisé en ce
    que le signal donné par l'élément OU (12) est transmissible par l'intermédiaire d'un coupleur optique.
  8. Dispositif de mesure selon l'une quelconque des revendications précédentes,
    caractérisé en ce
    qu'au moins une résistance (2) est mise en série à l'électrode d'ionisation (15) comme protection contre les contacts accidentels.
  9. Dispositif de réglage pour un brûleur (13), comprenant le dispositif de mesure selon l'une quelconque des revendications 1 à 8.
  10. Utilisation du dispositif de mesure selon l'une quelconque des revendications 1 à 8 dans une installation de chauffage.
EP01107100.8A 2000-05-12 2001-03-22 Dispositif de mesure pour une flamme Expired - Lifetime EP1154203B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10023273A DE10023273A1 (de) 2000-05-12 2000-05-12 Messeinrichtung für eine Flamme
DE10023273 2000-05-12

Publications (4)

Publication Number Publication Date
EP1154203A2 EP1154203A2 (fr) 2001-11-14
EP1154203A3 EP1154203A3 (fr) 2003-05-14
EP1154203B1 EP1154203B1 (fr) 2006-08-23
EP1154203B2 true EP1154203B2 (fr) 2015-07-15

Family

ID=7641776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01107100.8A Expired - Lifetime EP1154203B2 (fr) 2000-05-12 2001-03-22 Dispositif de mesure pour une flamme

Country Status (6)

Country Link
US (1) US6676404B2 (fr)
EP (1) EP1154203B2 (fr)
JP (1) JP4965028B2 (fr)
KR (1) KR100778145B1 (fr)
AT (1) ATE337525T1 (fr)
DE (2) DE10023273A1 (fr)

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ES2529181T3 (es) * 2003-12-11 2015-02-17 Abb Inc. Técnica de procesamiento de señal para discriminación mejorada de escáner de llamas
US7492269B2 (en) * 2005-02-24 2009-02-17 Alstom Technology Ltd Self diagonostic flame ignitor
US8066508B2 (en) 2005-05-12 2011-11-29 Honeywell International Inc. Adaptive spark ignition and flame sensing signal generation system
US8310801B2 (en) * 2005-05-12 2012-11-13 Honeywell International, Inc. Flame sensing voltage dependent on application
US8085521B2 (en) * 2007-07-03 2011-12-27 Honeywell International Inc. Flame rod drive signal generator and system
US7764182B2 (en) * 2005-05-12 2010-07-27 Honeywell International Inc. Flame sensing system
US8300381B2 (en) * 2007-07-03 2012-10-30 Honeywell International Inc. Low cost high speed spark voltage and flame drive signal generator
US7768410B2 (en) * 2005-05-12 2010-08-03 Honeywell International Inc. Leakage detection and compensation system
DE102005024763B3 (de) * 2005-05-31 2006-06-08 Stiebel Eltron Gmbh & Co. Kg Heizgerät und Verfahren zum Steuern eines Heizgerätes
US8875557B2 (en) 2006-02-15 2014-11-04 Honeywell International Inc. Circuit diagnostics from flame sensing AC component
EP2016336B1 (fr) * 2006-05-11 2014-07-09 Sit la Precisa S.p.a. Dispositif de mesure de l'intensité de la flamme
WO2009110015A1 (fr) * 2008-03-07 2009-09-11 Bertelli & Partners S.R.L. Procédé et dispositif perfectionnés pour détecter la flamme dans un brûleur fonctionnant avec un combustible solide, liquide ou gazeux
EP2154430B1 (fr) 2008-08-15 2015-09-30 Siemens Aktiengesellschaft Dispositif de commande pour un brûleur à gaz, et utilisation d'un tel dispositiv
WO2010094673A1 (fr) 2009-02-20 2010-08-26 Bekaert Combust. Technol. B.V. Brûleur à gaz à pré-mélange avec surveillance et régulation améliorées de la flamme
US9366433B2 (en) * 2010-09-16 2016-06-14 Emerson Electric Co. Control for monitoring flame integrity in a heating appliance
WO2012076600A1 (fr) 2010-12-09 2012-06-14 Bekaert Combustion Technology B.V. Brûleur doté d'une platine de brûleur fixée localement
US20150219333A1 (en) * 2012-08-27 2015-08-06 Clearsign Combustion Corporation Electrodynamic combustion system with variable gain electrodes
US10208954B2 (en) 2013-01-11 2019-02-19 Ademco Inc. Method and system for controlling an ignition sequence for an intermittent flame-powered pilot combustion system
US9494320B2 (en) 2013-01-11 2016-11-15 Honeywell International Inc. Method and system for starting an intermittent flame-powered pilot combustion system
US9696034B2 (en) * 2013-03-04 2017-07-04 Clearsign Combustion Corporation Combustion system including one or more flame anchoring electrodes and related methods
WO2014160830A1 (fr) * 2013-03-28 2014-10-02 Clearsign Combustion Corporation Circuit convertisseur à isolation électrique à haute tension alimenté par batterie et mécanisme de charge de la batterie
DE102013221511A1 (de) * 2013-10-23 2015-04-23 Robert Bosch Gmbh Vorrichtung zum Ermitteln eines Ionisationsstroms einer Flamme
US10402358B2 (en) 2014-09-30 2019-09-03 Honeywell International Inc. Module auto addressing in platform bus
US10678204B2 (en) 2014-09-30 2020-06-09 Honeywell International Inc. Universal analog cell for connecting the inputs and outputs of devices
US10042375B2 (en) 2014-09-30 2018-08-07 Honeywell International Inc. Universal opto-coupled voltage system
US10288286B2 (en) 2014-09-30 2019-05-14 Honeywell International Inc. Modular flame amplifier system with remote sensing
EP3045816B1 (fr) 2015-01-19 2018-12-12 Siemens Aktiengesellschaft Dispositif de commande d'une installation de brûleur
DE102015222263B3 (de) 2015-11-11 2017-05-24 Viessmann Werke Gmbh & Co Kg Verfahren und vorrichtung zur flammensignalerfassung
ES2902010T3 (es) 2017-03-27 2022-03-24 Siemens Ag Detección de un bloqueo
EP3728950B1 (fr) * 2017-12-21 2022-06-08 Giordano Controls S.p.A. Dispositif et procédé de régulation et de détection de flamme de brûleur à gaz
US10473329B2 (en) 2017-12-22 2019-11-12 Honeywell International Inc. Flame sense circuit with variable bias
US11236930B2 (en) 2018-05-01 2022-02-01 Ademco Inc. Method and system for controlling an intermittent pilot water heater system
US10935237B2 (en) 2018-12-28 2021-03-02 Honeywell International Inc. Leakage detection in a flame sense circuit
US11280811B2 (en) * 2019-06-17 2022-03-22 Advanced Energy Industries, Inc. High side current monitor
US11656000B2 (en) 2019-08-14 2023-05-23 Ademco Inc. Burner control system
US11739982B2 (en) 2019-08-14 2023-08-29 Ademco Inc. Control system for an intermittent pilot water heater

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Also Published As

Publication number Publication date
US20020004186A1 (en) 2002-01-10
EP1154203B1 (fr) 2006-08-23
JP4965028B2 (ja) 2012-07-04
EP1154203A2 (fr) 2001-11-14
KR100778145B1 (ko) 2007-11-21
EP1154203A3 (fr) 2003-05-14
US6676404B2 (en) 2004-01-13
KR20010104274A (ko) 2001-11-24
DE10023273A1 (de) 2001-11-15
ATE337525T1 (de) 2006-09-15
JP2001355840A (ja) 2001-12-26
DE50110780D1 (de) 2006-10-05

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