EP3969812B1 - Procédé de surveillance d'un brûleur et/ou d'un comportement de combustion d'un brûleur ainsi qu'ensemble de brûleur - Google Patents

Procédé de surveillance d'un brûleur et/ou d'un comportement de combustion d'un brûleur ainsi qu'ensemble de brûleur Download PDF

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Publication number
EP3969812B1
EP3969812B1 EP20734460.7A EP20734460A EP3969812B1 EP 3969812 B1 EP3969812 B1 EP 3969812B1 EP 20734460 A EP20734460 A EP 20734460A EP 3969812 B1 EP3969812 B1 EP 3969812B1
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EP
European Patent Office
Prior art keywords
burner
ionization
electrode
measured
air
Prior art date
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EP20734460.7A
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German (de)
English (en)
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EP3969812A1 (fr
Inventor
Wolfgang MUSELMANN
Kai Armesto-Beyer
Craig Hawthorne
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Truma Geraetetechnik GmbH and Co KG
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Truma Geraetetechnik GmbH and Co KG
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M11/00—Safety arrangements
    • F23M11/04—Means for supervising combustion, e.g. windows
    • 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
    • F23N5/20—Systems for controlling combustion with a time program acting through electrical means, e.g. using time-delay relays
    • F23N5/203—Systems for controlling combustion with a time program acting through electrical means, e.g. using time-delay relays using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/12—Flame sensors with flame rectification current detecting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/06—Space-heating and heating water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2900/00—Special features of, or arrangements for controlling combustion
    • F23N2900/05005—Mounting arrangements for sensing, detecting or measuring devices

Definitions

  • the invention relates to a method for monitoring a burner and/or the combustion behavior of a burner.
  • An ionization signal is measured and the measured ionization signal is used to monitor the burner.
  • the method preferably also serves to regulate the burner or the combustion behavior of the burner.
  • the invention relates to a burner arrangement with a burner, a heat exchanger, at least one ionization electrode, an air-fuel mixture supply for the burner and a control device.
  • the control device is connected to the ionization electrode and monitors the burner and/or a burning behavior of the burner based on ionization signals measured with the at least one ionization electrode.
  • the burner is preferably a gas burner.
  • FIG WO 2013/032324 A1 The basic structure of a burner arrangement with a burner, a surrounding heat exchanger and an ionization electrode is shown, for example, in FIG WO 2013/032324 A1 , as well as the EP 2 017 531 B1 .
  • an air-fuel (or alternatively: air-gas) mixture is burned (see also e.g. the DE 34 15 946 C2 ).
  • the fuel is, for example, propane, butane or z. B. in the gaseous state converted diesel or a mixture of these components.
  • the flame emanates from the surface of the burner.
  • ionization electrodes In order to monitor the presence of a flame or the combustion quality itself and preferably to regulate the behavior of the burner or the combustion process based thereon, it is known in the prior art to use so-called ionization electrodes.
  • the construction and use of ionization electrodes for monitoring or for detecting a flame is described, for example, in B. the EP 1 036 984 A1 , the EP 1 707 880 A1 , the DE 10 2010 055 567 B4 or the EP 2 357 410 A2 .
  • the ionization effect of a flame is used.
  • An AC voltage is applied to an area where the flame should be, either via two electrodes or via one electrode and a ground electrode. If a flame burns in this area, this causes a rectifier effect on the AC voltage, which in turn causes a current to flow, e.g. B. caused by the ground to the ionization electrode.
  • This current flow is recorded by measuring electronics and can be provided in the form of an ionization voltage as a measure of the ionization current that actually occurs.
  • a limit value is usually specified for the measured ionization voltage, exceeding which is evaluated as the presence of a flame and falling below it is interpreted to mean that no flame is burning. Overall, an ionization signal is thus determined which, depending on the design, can be a voltage or a current.
  • the ionization electrode is attached relative to this surface or to this ground electrode.
  • the position of the electrode relative to the flame or burner surface is decisive for measuring the ionization voltage.
  • Gas burners and in particular fan-operated gas burners are often exposed to changing environmental conditions that can lead to variable combustion behavior.
  • environmental parameters are, for example, air pressure, temperature of the combustion air, gas pressure (ie the pressure at which the fuel gas is supplied), type of gas and also the energy value of the gas.
  • gas pressure ie the pressure at which the fuel gas is supplied
  • type of gas ie the pressure at which the fuel gas is supplied
  • energy value of the gas ie the pressure at which the fuel gas is supplied
  • the composition of the fuel gas can often vary.
  • typical gas mixtures such as LPG (Liquefied Petroleum Gas; Autogas) or typical propane/butane mixtures
  • LPG Liquefied Petroleum Gas
  • propane/butane mixtures can vary.
  • the gas burner is not operated at the optimum operating point, at which the fuel is burned optimally and the pollutant emissions are minimal.
  • lambda ranges are used for clean and low-emission combustion.
  • this lambda range the combustion takes place completely and hygienically. Combustion outside these limits leads to reduced efficiency and increased emissions of harmful exhaust gas components.
  • the EP 0 770 824 B1 provides that, starting from a lean, over-stoichiometric burner operation, the excess air is reduced until the combustion is under-stoichiometric. To do this, the ionization voltage is measured between an ionization electrode and the burner surface. Since the ionization voltage is at a maximum in the case of stoichiometric combustion, the ionization voltage initially increases in the method described when the excess air is reduced. If the ionization voltage subsequently falls after reaching the maximum, this is a sign that the combustion is sub-stoichiometric.
  • the qualitative course of the ionization signal usually shows reproducible characteristic features in the relevant lambda range.
  • the absolute values can be subject to deviations. So e.g. B. the absolute value of the ionization voltage depends on the position of the ionization electrode (another name is also ionization candle), on aging properties, on the nature of the fuel or on the altitude at which the combustion process takes place. Hence a calibration of the measuring arrangement in order to use the ionization signal as a controlled variable for combustion control.
  • the calibration consists, for example, in finding the aforementioned maximum of the ionization voltage by varying the mixing ratio by making the air-fuel mixture richer.
  • the combustion is gradually made richer until the maximum voltage is determined by running a blower for the combustion air at a lower speed or by allowing more gas to flow in through a valve.
  • it is known to carry out a calibration by leaning the gas-air mixture (see e.g EP 2 014 985 A2 ).
  • the object on which the invention is based is to propose a method for monitoring a burner and a corresponding burner arrangement with a burner that can be monitored in this way, which represent an alternative to the prior art.
  • the invention achieves the object by a method which is characterized in that the ionization signal is measured between an ionization electrode and a counter-electrode spaced apart from a burner surface of the burner.
  • the monitoring consists, for example, in determining an amount for an ionization voltage or an ionization current from the ionization signal measured relative to the counter-electrode and with a known lambda value, and in comparing this value with a desired value. If the determined value deviates from the target value by more than a tolerance range, the air/fuel mixture is corrected, e.g. B. the proportion of air is increased or decreased.
  • a target value is determined or how the method is subjected to a calibration.
  • the method is used to monitor a burner or specifically the burning behavior of a burner.
  • the method preferably serves to monitor or regulate the combustion of the air-fuel mixture by the burner, ie the combustion behavior of the burner.
  • the method also includes a calibration or a determination of the parameters used for the monitoring.
  • the burner is preferably a fully premixed surface burner.
  • the burner or specifically the burner surface, from which the flames generated during combustion emanate serves as a counter-electrode, opposite which the ionization signal (eg the ionization voltage or the ionization current) is measured with the ionization electrode.
  • the ionization signal eg the ionization voltage or the ionization current
  • this takes place via a counter-electrode spaced apart from the burner surface.
  • the counter-electrode is therefore primarily not a part of the burner and is—depending on the configuration—galvanically isolated from the burner or in particular from the burner surface.
  • an electrical ionization signal (that is, depending on the design, an electrical voltage or an electrical current) is measured between the ionization electrode and a counter-electrode spaced apart from the burner surface. From the ionization signal measured in this way, it is then determined whether the firing process is taking place optimally and whether it may be necessary to intervene to regulate the burner or the entire firing arrangement.
  • the counter-electrode is a heat exchanger that at least partially surrounds the burner surface.
  • the heat exchanger or z. B. an inner housing of the heat exchanger facing the burner surface is at least partially electrically conductive.
  • the heat exchanger is used to transfer the thermal energy of the flue gas generated during combustion to a fluid, e.g. B. water is transferred.
  • a single ionization electrode is used, which is further away from the flame area - i.e. in particular from the burner surface - compared to the prior art, or at least two ionization electrodes - For example, at different distances from the burner surface - used to measure ionization signals.
  • this is preferably located in one embodiment centrally between the burner surface and the heat exchanger housing as an example of the counter-electrode that differs from the burner.
  • a spark plug is used both to ignite the combustion process of the burner and as an ionization electrode.
  • --based on the at least one ionization signal--the burner is supplied with an air-fuel mixture.
  • the air supply or the fuel supply is changed.
  • the composition of an air-fuel mixture with which the burner is supplied is acted upon, e.g. B. changed.
  • One embodiment provides that the ionization signal is measured between the ionization electrode and the counter-electrode by electrically connecting the counter-electrode to ground.
  • an—additional or supplementary—ionization signal is measured between the ionization electrode and a burner surface of the burner.
  • This ionization signal is thus preferably used in addition to the ionization signal between the ionization electrode and the counter-electrode for monitoring the burner.
  • the burner surface or, in general, the burner and the counter-electrode are preferably galvanically isolated from one another, ie electrically isolated from one another.
  • a type of mixed ionization signal (possibly as a supplementary signal in addition to an ionization signal measured only between the ionization electrode and the counter-electrode) is measured by measuring the heat exchanger—or a heat exchanger housing—and the burner—or preferably the burner surface - are electrically connected to ground and preferably to the same ground.
  • the different ionization signals result from the following measuring arrangements:
  • the ionization signal is measured between the ionization electrode and the counter-electrode, with the burner surface being electrically insulated from the counter-electrode.
  • the ionization signal is measured between, on the one hand, the counter-electrode and burner surface, both of which are connected to one another or to ground, and, on the other hand, the ionization electrode.
  • --as is customary in the prior art--a (preferably supplementary) ionization signal is measured between the ionization electrode and the burner surface, which is connected to ground and is electrically insulated from the counter-electrode.
  • the counter-electrode is formed in particular by a heat exchanger surrounding the burner surface.
  • ionization signals are recorded via ionization electrodes located at different positions.
  • such an ionization electrode is used which is located in a region around the mean distance between the burner (or specifically the burner surface) and the counter-electrode.
  • the range lies within plus or minus 20% of the mean distance. In another embodiment, the range is within plus or minus 10% relative to the mean distance. In one embodiment, the ionization electrode used for measuring the ionization signal is located closer to the counter-electrode than to the burner surface.
  • the ionization signals when using the ionization signals it is advantageous and relevant to safety to carry out calibrations or at least occasionally or at least when starting up for the first time the parameters used for monitoring and preferably controlling the combustion behavior (e.g. target or limit values) to determine.
  • the parameters used for monitoring and preferably controlling the combustion behavior e.g. target or limit values
  • the method according to the invention provides that for a calibration and/or for a determination of parameters used in the monitoring of the burner, ionization signals are measured in an over-stoichiometric combustion, and that a local extreme (e.g. a minimum of the amount) of the ionization signal is determined as a function of a lambda value of an air-fuel mixture supplied to the burner and is used for the calibration or the determination.
  • a local extreme e.g. a minimum of the amount
  • measurements of the ionization signal in the depleted area i.e. H. made with an excess of air.
  • the ratio of air and fuel is varied—preferably only—in the lean range (ie the lambda value is changed) and the respective ionization signals are measured and evaluated.
  • a local extremum of the ionization signal is determined as a function of the lambda value. This extremum is then used for calibration or for determining the parameter adjustment that may be required.
  • the advantage of the above steps is that the measurements are carried out in the gentle lean range.
  • the ionization signal is preferably measured between at least one ionization electrode and the counter-electrode spaced apart from the burner. Depending on the sign of the measured ionization signal or depending on how - z. B. considering the magnitude - the ionization signal is evaluated, the local extremum is a minimum or a maximum.
  • a local extremum of the measured ionization signals is determined via lambda in the area of the lean air/fuel mixture (that is, with a lambda value greater than 1). In one embodiment, this extremum is then approached for the calibration. The lambda value is then reduced by a predetermined value, for example by reducing the speed of the combustion air fan, in order to thereby achieve a desired combustion process.
  • one embodiment provides for ionization signals to be measured via at least two ionization electrodes for calibration and/or for determining the parameters used in monitoring the burner, with the ionization electrodes being at different distances from a burning surface of the burner and/or the counter electrode.
  • the ionization signals are measured—preferably by varying the lambda value of the air/fuel mixture fed to the burner—in such a way that at least the counter-electrode is grounded.
  • the ionization signals are measured with different lambda values.
  • an intersection of the two curves that is, the dependency, for example, of the amplitude of the ionization signal on the lambda value
  • the measurements are preferably only carried out in the over-stoichiometric range.
  • the invention solves the problem by a burner arrangement, which is characterized in that the control device for monitoring - and / or regulation - the burner and / or a combustion behavior of a burner at least one between The ionization signal measured by the ionization electrode and the heat exchanger is used as the counter electrode.
  • control device allows monitoring or control by implementing at least one of the preceding configurations of the method.
  • One embodiment provides that the ionization electrode is arranged in an area around a mean distance between a burner surface and the heat exchanger.
  • the ionization electrode is arranged in a range of plus/minus 20% around the average distance between a burner surface and the heat exchanger. If the mean distance is M, the ionization electrode in this embodiment is in a range between 0.8*M and 1.2*M.
  • the configuration according to the invention includes that the control device leans the air-fuel mixture supplied to the burner for a calibration and/or for a determination of parameters used in monitoring the burner via the air-fuel mixture supply and with the leaned air Evaluates fuel mixture measured ionization signals, and that the control device for the calibration or the determination of the parameters determines a local extreme of the ionization signals.
  • an ionization electrode is also used for classic flame monitoring and/or as a spark plug to start a combustion process.
  • the 1 1 schematically shows a burner arrangement 1 with a burner 2 which is supplied with an air-fuel mixture via an air-fuel mixture supply 5 .
  • the fuel is, for example, a combustible gas such as propane or butane or diesel that has been converted into the gaseous state.
  • the air-fuel mixture is burned by the burner 2, with a flame—not shown—forming here above the burner surface 2' of the burner 2.
  • the burner surface 2' is surrounded by a heat exchanger 3, in which the heat generated by the combustion process - in the form of the flame and the flue gas generated - is transferred to another medium, e.g. B. is transferred to water or a glycol-water mixture.
  • a heat exchanger 3 in which the heat generated by the combustion process - in the form of the flame and the flue gas generated - is transferred to another medium, e.g. B. is transferred to water or a glycol-water mixture.
  • the heat exchanger 3 is designed to be electrically conductive at least partially and preferably on the inner side facing the burner surface 2′. This conductivity allows the heat exchanger 3 to be electrically connected to ground or the ionization voltage to be measured via the at least one ionization electrode 4 in relation to the heat exchanger 3.
  • An ionization electrode 4 via which an ionization signal (here, for example, the ionization voltage) is measured, serves to monitor or control the firing process--only in the illustrated embodiment. Alternatively, an ionization current can be measured.
  • an ionization signal here, for example, the ionization voltage
  • either the burner surface 2' of the burner 2 or the previously mentioned, at least partially electrically conductive inner surface of the heat exchanger 3 is connected to ground, so that the ionization electrode 4 is used to measure the ionization voltage with respect to the burner 2 or with respect to the heat exchanger 3 is measured. It is also provided in one embodiment that the heat exchanger 3 and the burner surface 2' are at the same mass, so that the ionization signal from the ionization electrode 4 is measured opposite both as a counter-electrode.
  • the ionization signal is measured by the at least one ionization electrode 4 with the burner surface 2', with the heat exchanger 3 as individual counter-electrodes, or with the burner surface 2' and the heat exchanger 3 as a common counter-electrode.
  • These three differently measured ionization signals are then processed individually or together and used to monitor the burner 2 or as a controlled variable for the combustion behavior of the burner 2 .
  • the burner surface 2' and the heat exchanger 3 are of the same mass, so that the ionization signal is measured relative to the burner surface 2' and the heat exchanger 3.
  • the options between which components the electrical voltage is measured are indicated in the figure by the double arrows.
  • the ionization electrode 4 is connected to the control device 6, which evaluates or processes the measurement signal (ie the ionization signal) and which acts on the air/fuel mixture supply 5 based on the measurement values. This happens e.g. B. by regulating the amount of fuel or e.g. B. by controlling a - the air-promoting blower - not shown here.
  • the action of the control device 6 on the control of the combustion process is indicated by the dashed arrow.
  • control device 6 acts on a - not shown here - starting device for starting a combustion process, if z. B. shows from the ionization signal that no flame is burning.
  • the arrangement 1 thus also allows flame monitoring.
  • the cut of the 2 1 shows a burner arrangement 1 with two ionization electrodes 4, 4', which are located radially at different distances between the burner surface 2' and the inside of the heat exchanger 3. It can be seen that the burner surface 2 ′ has a circular cross-section in this embodiment, which is surrounded by the inner wall of the circular-cylindrical heat exchanger 3 . The representation is not true to size.
  • the burner surface 2' has a diameter of 50 mm, the distance between the burner surface 2' and the inner edge of the heat exchanger 3 being 38 mm.
  • the two ionization electrodes 4', 4 in this exemplary embodiment have a distance of between 5 mm and 9 mm (for the ionization electrode 4' that is closer to the burner surface 2') or between 14 mm and 22 mm (for the ionization electrode 4' that is further from the burner surface 2 'Removed ionization electrode 4) to the outer surface of the burner surface 2'.
  • the position of the inner ionization electrode 4' corresponds to the configuration known in the prior art.
  • the short distance from the burner surface 2' has the advantage that there is a high probability that the ionization electrode 4' will project directly into a flame. This therefore relates in particular to the use of the ionization electrode 4' for flame detection.
  • the radially further outer ionization electrode 4 is located here in an area around a central distance between the burner surface 2' and the inner edge of the heat exchanger 3.
  • the inner wall of the heat exchanger 3 is grounded and the electrical ionization signal is measured via the ionization electrode 4 with respect to this ground.
  • the 3 shows two ionization voltages with the two ionization electrodes 4, 4 'of the embodiment of 2 have been measured.
  • the voltages were measured (the voltages are plotted with a negative sign on the y-axis) in each case with respect to the burner surface 2', which was grounded. This measurement thus corresponds to the state of the art.
  • the heat exchanger 3 was electrically isolated from the burner surface 2'.
  • the lambda value increasing from left to right is plotted on the x-axis. The mixture thus becomes leaner from left to right.
  • the 4 shows the curves of the voltage values when the voltages between on the one hand the respective ionization electrode 4, 4' and on the other hand both the burner surface 2' and the surrounding heat exchanger 3 of the embodiment of FIG 2 be measured. In contrast to the measurements of 3 the burner surface 2 'and the heat exchanger 3 electrically connected to each other and thus on the same ground.
  • the upper curve was measured with the ionization electrode 4' positioned closer to the burner surface 2'.
  • the lower curve originates from the measurement via the ionization electrode 4, which is further away from the burner surface 2'.
  • the ionization signal of the ionization electrode 4 that is further away initially falls, in order then to rise again after a local minimum—which is the local extremum sought here.
  • the amplitude of this ionization signal also falls towards zero, as in the curve of the ionization electrode 4' located closer to the burner surface 2'.
  • the ionization signal After passing through the minimum, the ionization signal increases again and then decreases again. With these larger lambda values, the flame is also clearly lifted off the burner surface.
  • the position and the form of the minimum in the lean range also depend on the area loading of the burner (ratio of the energy supplied and the usable burner surface). Therefore, in one embodiment, it is provided that whenever there is a change in the output at which the burner 2 is operated, the control parameters are determined anew, ie a new calibration is carried out.
  • a method for calibration - and thus, for example, as part of the method for monitoring the burner or for controlling the combustion process - is that the air-fuel mixture is leaned and that a local minimum of the ionization signal between the ionization electrode and the heat exchanger is sought as an example of a surrounding counter-electrode. The minimum is then used for calibration so that the combustion behavior of the burner can finally be monitored or the combustion process can be regulated using the calibration data.
  • a big advantage is that the calibration is carried out in the lean range.
  • a target value is calculated which—in particular as a function of the output or the surface load of the burner—is higher by a previously specified value and is then used as a controlled variable.
  • FIG 5 shows the course of the ionization voltages measured across the two ionization electrodes 4, 4' for the case in which only the heat exchanger 3 as the counter-electrode to the respective ionization electrode 4, 4' is electrically connected to ground and galvanically isolated from the burner surface 2'.
  • the negative voltage is plotted on the y-axis and the lambda value increasing from left to right is plotted on the x-axis.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Control Of Combustion (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Claims (5)

  1. Procédé de surveillance d'un brûleur (2) et/ou d'un comportement de combustion d'un brûleur (2),
    au moins un signal d'ionisation étant mesuré, et
    le signal d'ionisation mesuré étant utilisé pour la surveillance du brûleur (2) et/ou du comportement de combustion du brûleur (2), et
    le signal d'ionisation étant mesuré entre une électrode d'ionisation (4, 4') et une contre-électrode (3) espacée d'une surface de brûleur (2') du brûleur (2),
    des signaux d'ionisation étant mesurés lors d'une combustion surstoechiométrique pour un calibrage et/ou une détermination de paramètres utilisés lors de la surveillance du brûleur (2), caractérisé en ce que
    un extremum local du signal d'ionisation est déterminé lors de la combustion surstoechiométrique en fonction d'une valeur lambda d'un mélange d'air et de combustible amené vers le brûleur (2) et est utilisé pour le calibrage ou la détermination.
  2. Procédé selon la revendication 1,
    un échangeur de chaleur (3) étant utilisé en tant que contre-électrode.
  3. Procédé selon la revendication 1 ou 2,
    le signal d'ionisation étant mesuré entre l'électrode d'ionisation (4, 4') et la contre-électrode (3) en ce que la contre-électrode (3) et la surface de brûleur (2') sont électriquement raccordées à la masse.
  4. Agencement de brûleur (1) comprenant un brûleur (2), un échangeur de chaleur (3), au moins une électrode d'ionisation (4, 4'), un moyen d'alimentation (5) en mélange d'air et de combustible pour le brûleur (2), et un dispositif de commande (6),
    le dispositif de commande (6) étant raccordé à ladite au moins une électrode d'ionisation (4, 4'),
    le dispositif de commande (6) surveillant le brûleur (2) et/ou un comportement de combustion du brûleur (2) sur la base de signaux d'ionisation mesurés au moyen de ladite au moins une électrode d'ionisation (4, 4'), et
    le dispositif de commande (6) utilisant pour une surveillance du brûleur (2) et/ou d'un comportement de combustion du brûleur (2) au moins un signal d'ionisation mesuré entre l'électrode d'ionisation (4, 4') et l'échangeur de chaleur (3) en tant que contre-électrode,
    caractérisé en ce que
    pour un calibrage et/ou une détermination de paramètres utilisés lors de la surveillance du brûleur (2), le dispositif de commande (6) appauvrit le mélange d'air et de combustible amené vers le brûleur (2) par le moyen d'alimentation (5) en mélange d'air et de combustible et évalue des signaux d'ionisation mesurés au moyen du mélange appauvrit d'air et de combustible, et
    en ce que pour le calibrage ou la détermination des paramètres, le dispositif de commande (6) détermine un extremum local des signaux d'ionisation au moyen du mélange appauvrit d'air et de combustible.
  5. Agencement de brûleur (1) selon la revendication 4,
    l'électrode d'ionisation (4, 4') étant agencée dans une plage de plus/moins 20% autour d'une distance moyenne entre une surface de brûleur (2') et l'échangeur de chaleur (3).
EP20734460.7A 2019-05-16 2020-05-06 Procédé de surveillance d'un brûleur et/ou d'un comportement de combustion d'un brûleur ainsi qu'ensemble de brûleur Active EP3969812B1 (fr)

Applications Claiming Priority (2)

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DE102019003451.1A DE102019003451A1 (de) 2019-05-16 2019-05-16 Verfahren zum Überwachen eines Brenners und/oder eines Brennverhaltens eines Brenners sowie Brenneranordnung
PCT/EP2020/000091 WO2020228979A1 (fr) 2019-05-16 2020-05-06 Procédé de surveillance d'un brûleur et/ou d'un comportement de combustion d'un brûleur ainsi qu'ensemble de brûleur

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EP3969812A1 EP3969812A1 (fr) 2022-03-23
EP3969812B1 true EP3969812B1 (fr) 2023-07-05

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EP (1) EP3969812B1 (fr)
CN (1) CN113767252A (fr)
AU (1) AU2020274574B2 (fr)
CA (1) CA3126368A1 (fr)
DE (1) DE102019003451A1 (fr)
WO (1) WO2020228979A1 (fr)

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DE102021003172A1 (de) 2021-06-22 2022-12-22 Truma Gerätetechnik GmbH & Co. KG Heizvorrichtung
DE102023111213A1 (de) * 2023-05-02 2024-11-07 Viessmann Climate Solutions Se Verfahren zum Starten eines Gasbrenners

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FR2546273B1 (fr) * 1983-05-19 1988-11-18 Sdecc Bruleur-torche a premelange d'air et de gaz
DE59604283D1 (de) * 1995-10-25 2000-03-02 Stiebel Eltron Gmbh & Co Kg Verfahren und Schaltung zur Regelung eines Gasbrenners
DE19817966A1 (de) * 1998-04-22 1999-10-28 Buderus Heiztechnik Gmbh Brenner, versehen mit einer Flammenwächterelektrode, sowie Elektrode zum Einsatz in einem derartigen Brenner
DE19912076A1 (de) * 1999-03-18 2000-09-21 Kromschroeder Ag G Vormischbrenner für gasförmige Brennstoffe
DE20112299U1 (de) * 2001-07-26 2001-10-18 Buderus Heiztechnik Gmbh, 35576 Wetzlar Ionisationselektrode
DE10220773A1 (de) * 2002-05-10 2003-11-20 Bosch Gmbh Robert Verfahren und Einrichtung zur Regelung eines Verbrennungsprozesses, insbesondere eines Brenners
JP2004301437A (ja) * 2003-03-31 2004-10-28 Tokyo Gas Co Ltd 開放式ガス機器及びその燃焼判定方法
EP1630178A1 (fr) 2004-08-10 2006-03-01 Innovene Manufacturing Belgium NV Procédé de polymèrisation
DE102005012388B4 (de) * 2005-03-17 2007-09-20 Beru Ag Verfahren zum Erfassen des Vorliegens einer Flamme im Brennraum eines Brenners und Zündvorrichtung für einen Brenner
AT505244B1 (de) * 2007-06-11 2009-08-15 Vaillant Austria Gmbh Verfahren zur überprüfung des ionisationselektrodensignals bei brennern
AT505442B1 (de) * 2007-07-13 2009-07-15 Vaillant Austria Gmbh Verfahren zur brenngas-luft-einstellung für einen brenngasbetriebenen brenner
DE102010001307B4 (de) * 2010-01-28 2013-12-24 Viessmann Werke Gmbh & Co Kg Verfahren und Vorrichtung zur auf Ionisationsstrommessung basierenden Flammenerkennung sowie Flammenüberwachungssystem
DE102010046954B4 (de) * 2010-09-29 2012-04-12 Robert Bosch Gmbh Verfahren zur Kalibrierung, Validierung und Justierung einer Lambdasonde
DE102010055567B4 (de) * 2010-12-21 2012-08-02 Robert Bosch Gmbh Verfahren zur Stabilisierung eines Betriebsverhaltens eines Gasgebläsebrenners
NL2007310C2 (nl) * 2011-08-29 2013-03-04 Intergas Heating Assets B V Waterverwarmingsinrichting en werkwijze voor het meten van een vlamstroom in een vlam in een waterverwarmingsinrichting.
WO2016140681A1 (fr) * 2015-03-05 2016-09-09 Clearsign Combustion Corporation Application de champs électriques pour limiter la production de co et de nox dans une réaction de combustion
PT108703B (pt) * 2015-07-17 2021-03-15 Bosch Termotecnologia, S.A. Dispositivo para aparelhos de aquecimento e processo para a operação de um dispositivo para aparelhos de aquecimento
DE102017204014A1 (de) * 2016-09-02 2018-03-08 Robert Bosch Gmbh Verfahren zur Bestimmung einer Brennstofftypengröße in einem Heizsystem
DE102017126137A1 (de) * 2017-11-08 2019-05-09 Ebm-Papst Landshut Gmbh Verfahren zur Regelung eines brenngasbetriebenen Heizgerätes

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US12140310B2 (en) 2024-11-12
EP3969812A1 (fr) 2022-03-23
CA3126368A1 (fr) 2020-11-19
CN113767252A (zh) 2021-12-07
WO2020228979A1 (fr) 2020-11-19
DE102019003451A1 (de) 2020-11-19
US20220128235A1 (en) 2022-04-28
AU2020274574A1 (en) 2021-08-05
AU2020274574B2 (en) 2025-06-26

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