EP3690318A2 - Procédé et dispositif de régulation d'un mélange air-gaz de combustion dans un appareil de chauffage - Google Patents

Procédé et dispositif de régulation d'un mélange air-gaz de combustion dans un appareil de chauffage Download PDF

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Publication number
EP3690318A2
EP3690318A2 EP20150310.9A EP20150310A EP3690318A2 EP 3690318 A2 EP3690318 A2 EP 3690318A2 EP 20150310 A EP20150310 A EP 20150310A EP 3690318 A2 EP3690318 A2 EP 3690318A2
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EP
European Patent Office
Prior art keywords
ionization
fuel gas
heater
speed
ionization signal
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.)
Granted
Application number
EP20150310.9A
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German (de)
English (en)
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EP3690318B1 (fr
EP3690318A3 (fr
Inventor
Heinz-Jörg Tomczak
Christian Schwarz
Stefan Hucke
Jochen Grabe
Tobias Funke
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Vaillant GmbH
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Vaillant GmbH
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Filing date
Publication date
Priority claimed from DE102019119186.6A external-priority patent/DE102019119186A1/de
Application filed by Vaillant GmbH filed Critical Vaillant GmbH
Publication of EP3690318A2 publication Critical patent/EP3690318A2/fr
Publication of EP3690318A3 publication Critical patent/EP3690318A3/fr
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Publication of EP3690318B1 publication Critical patent/EP3690318B1/fr
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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
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air 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
    • F23N5/02—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q3/00—Igniters using electrically-produced sparks
    • F23Q3/008—Structurally associated with fluid-fuel burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/20—Calibrating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/06—Fail safe for flame failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/10—Fail safe for component failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/12—Fail safe for ignition failures
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2237/00—Controlling
    • F23N2237/24—Controlling height of burner
    • F23N2237/26—Controlling height of burner oxygen-air ratio

Definitions

  • the invention is in the field of regulating a fuel gas-air mixture for a combustion process in a heating device, in particular for heating water or heating a building.
  • a heating device in particular for heating water or heating a building.
  • an ionization measurement is carried out in a flame area, in particular in many heaters. Such measurements should enable stable control over long periods of time. If the control fails, the heater must be switched off in most cases, which of course should occur as rarely as possible.
  • flame monitoring is typically also carried out in heaters, the main task of which is to ensure that no fuel gas is supplied after the heater is started if there is no flame. This prevents the formation of a potentially explosive mixture and the escape of unburned fuel gas.
  • An often used electronic flame monitor uses an existing ignition electrode, which is otherwise not required after the ignition of a flame, to generate an ionization signal, which in the prior art is not used for regulation but for monitoring the flame.
  • the specially prepared ionization signal can not only reliably detect the presence of a flame or its extinction, but also, for example, the physical lifting of the flame from the burner due to an excessively high level Measure the combustion air supply early. This means that the flame can be switched off early if the flame becomes unstable.
  • the control has so far often been carried out in operation by means of a separate ionization electrode.
  • the respective actual value of the ionization in the flame area is determined, which is proportional to the lambda value currently present, so that it can be derived from the ionization measurement.
  • an alternating voltage is applied to the ionization electrode, the flame region ionized in the presence of flames having a rectifying effect, so that an ionization current mainly flows only during one half-wave of the alternating current.
  • ionization signal This current or a proportional voltage signal derived therefrom, hereinafter referred to as ionization signal, is measured and, if necessary after digitalization, further processed as an ionization signal in an analog / digital converter.
  • the lambda value can be measured and regulated to a target value by means of a control loop.
  • the supply of air and / or fuel gas is changed by suitable actuators until the desired setpoint for lambda is reached.
  • a lambda value> 1 (1 corresponds to a stoichiometric ratio) is aimed for, e.g. B.
  • Lambda 1.3 to ensure that enough air is supplied for clean combustion with essentially no generation of carbon monoxide.
  • lambda must remain so small that stable combustion is guaranteed.
  • the regulation can take place in particular via a valve for the supply of fuel gas and / or a blower for the supply of ambient air.
  • combustion controls which regulate the desired combustion quality (lambda value) via stored ionization current control curves.
  • the electrodes used are subject to a time-dependent drift, which essentially results from a growing oxide layer on the electrode surface, which has a negative influence on the measured signal.
  • calibration sequences are triggered cyclically (e.g. after a specifiable number of operating hours).
  • the basic structure of such heaters, of measuring systems for ionization measurement and of their use for regulation are, for example, also from the EP 0 770 824 B1 and the EP 2 466 204 B1 known. It is also described there that the control accuracy can change over time due to various influences, in particular due to influences on the state or the shape of the ionization electrode.
  • Various methods for a recalibration are specified, but they all require a relatively high outlay and / or above all can have the disadvantage that during the recalibration the heater has to be operated temporarily at lambda values of 1 or even less, which is too can lead to a temporary generation of undesirable carbon monoxide.
  • the present invention seeks to remedy this in order to enable safe and reliable operation of a heater, stable control or, if necessary, emergency operation control in the event of faults in a primary control system.
  • a heater can be controlled reliably, the time period t being very long compared to the duration of the other method steps, for example several hours or even longer.
  • the repetition of the steps from 1.4 produces negligibly little carbon monoxide, so that the length of the time is not important in this regard and there are no other significant disadvantages against repetition.
  • the control remains in the desired control range for the lambda value and, even when all the process steps are repeated, there are no excessively high flame temperatures.
  • a method is preferred in which, in the event of a deviation of the fan speed stored in step 1.6 from the value set in step 1.1 greater than a predeterminable deviation value, a corresponding correction of the setting of the fuel gas valve is carried out and steps 1.3 to 1.7 are repeated until the deviation is smaller than the deviation value, which corresponds to the achievement of a desired heater output.
  • a desired lambda value can be maintained, but also a certain predeterminable power can be regulated.
  • the fan speed is the most precise value to be measured in a heater, which is why it is preferably used to set a desired output.
  • a method is particularly preferred in which the predeterminable amount in step 1.4 is selected to be so small that a distance between the lambda value and a range in which an impermissible amount or concentration of carbon monoxide can be generated is maintained. This embodiment ensures that when the method is carried out, very little carbon monoxide is generated regardless of the length of time t, even if the calibration of the system is checked again and again.
  • the method is carried out in the same way for fan speeds corresponding to different powers and associated settings of the fuel gas valve, which results in a calibration of the control system that is updated at intervals of the length of time (t) and takes into account all changes in the system. In this way, a calibration curve is corrected again and again for different heater outputs, as a result of which the control described can be used in particular as a primary control.
  • a particularly preferred embodiment of the method is the use as a so-called emergency running control.
  • a method according to one of claims 1 to 4 in particular switched using existing monitoring electronics. This possibility increases the availability of heaters significantly, since in the event of a fault in the primary control, it cannot be switched off, but can only be switched to the emergency operation system.
  • a heating device which is particularly suitable for switching from a primary control to an emergency operation system, has the following components: an air supply and a fuel gas supply, which are controlled by a first control unit, and with a first measuring system, comprising an ionization electrode, a counter electrode, a first alternating current source and a first evaluation electronics for determining a first ionization signal which can be fed to the control unit, a second measuring system for measuring a second ionization signal being present, which can be generated between an ignition electrode which is used to ignite combustion and the counter electrode from the second measuring system, and wherein the first and the second system are each set up to determine a lambda value.
  • this also enables a switchover in the event of a fault in a primary control to an emergency operation system, which can take over the control.
  • the heater preferably has a switchover unit which, in the event of failure of at least one component of the first measuring system, switches over to regulation with the second measuring system.
  • the ionization measurement according to the invention which can be used for flame monitoring and control in this way, works according to the following principle:
  • an AC voltage is applied without a DC voltage component from a voltage source with a high output impedance.
  • an ionization current flows off to earth during each positive half-wave of the AC voltage.
  • the voltage amplitude of each positive half-wave is reduced due to the high output impedance of the voltage source, while the negative half-wave remains unchanged.
  • a negative DC voltage component is impressed on the AC voltage.
  • the amplitude of this negative DC voltage component is converted as a mean value by means of an amplifier circuit into a voltage signal which, due to its characteristic course, can be used for the purposes described here while the gas supply remains constant and the air supply increases.
  • this signal is digitized using an analog / digital converter (eg in values between 0 and 1023), so that it can be processed further in a microprocessor.
  • the characteristic course of the signal results from a combination of different effects.
  • the ionization in the flame area is strongest when the combustion is operated in a stoichiometric ratio of combustion gas and combustion air
  • the flames physical removal of the flames
  • the temperature of the ionization electrode or the flame also plays a role in the rectifying effect.
  • the result is a curve with an easily reproducible minimum, which is close to a lambda value typical of continuous operation.
  • the invention also relates to a computer program product comprising instructions which cause the described device to carry out the method proposed here.
  • Modern heaters typically include an electronic controller that contains at least one programmable microprocessor that can be controlled by such a computer program product.
  • existing ones Devices with an ionization measurement and flame monitoring can be retrofitted by such a computer program product for the method according to the invention.
  • the invention also relates to an emergency operation system for gas-powered heating devices, in particular with ionization current-based combustion control.
  • ionization current-based combustion control From the DE 196 18 573 C1 and DE 195 02 901 C1 Combustion controls are known which regulate the desired combustion quality (air ratio lambda) via stored ionization current control curves.
  • the ionization current is usually measured with an ionization current electrode to which a voltage is applied.
  • These electrodes are subject to a time-dependent drift, which essentially results from an increasing oxide layer on the electrode surface, which has a negative influence on the measured signal.
  • DE 195 39 568 C1 includes a calibration at the operating point with maximum ionization current (SCOT) or in the vicinity of this point (Sitherm).
  • a calibration point can also be used at the point at which the flame begins to lift off the burner.
  • the systems run cyclically in the stoichiometric or briefly in the sub-stoichiometric range with very high CO emissions and very high flame temperatures.
  • the high CO values have to be avoided because carbon monoxide is known to be a dangerous breath poison.
  • the high temperatures that occur in particular in the case of near-stoichiometric combustion have a strong effect on the service life of the ionization current electrodes used, so that they have to be replaced relatively frequently.
  • a suitable electronic hardware circuit uses a calibration point near the desired operating point of the heater, which is cyclically started. This point lies in the range of lambda -1.5 and on the one hand provides relatively cold flame temperatures with very low CO emissions.
  • Figure 1 represents a device for performing the method according to the invention.
  • the mixture which emerges from the burner is triggered by an ignition voltage which is present at the ignition electrode and forms sparks there ignited.
  • the process for controlling combustion in a gas-powered heater is characterized by the following steps - the fan runs to a specified speed - the gas valve follows the fan speed via a designed characteristic curve ( Gas valve stepper position via fan speed) - the position of the gas valve stepper motor is now "frozen” and the fan speed is reduced in a defined manner, - the fan speed is now ramped up continuously, the measured ionization signal follows the characteristic curve - the respective minimum value of the signal is stored and the air volume flow is saved the fan is raised until a threshold value rises of the ionization current relative to the minimum value has been reached, - lastly the minimum value is approached, which also represents the operating point of the device, - in this point the device runs by regulating the blower until a period of time t has expired, - after the period of time t has elapsed, System starting again from point 1.
  • FIG. 1 schematically shows an embodiment of a device proposed here.
  • a flame region 2 forms in a heater 1 for burning a fuel gas with air.
  • Air enters the heater 1 via an air supply 3 and a blower 5.
  • Fuel gas is mixed with the air via a fuel gas supply 4 and a fuel gas valve 6.
  • An ignition electrode 7 ignites the mixture at the start of the combustion process and is then z.
  • B. used as part of a flame detector.
  • a first ionization signal is measured in the flame region 2 by means of an ionization electrode 8.
  • a first measuring system S1 is used, by which the ionization electrode 8 is supplied with an AC voltage from a first AC voltage source, with a first evaluation electronics 13
  • the resulting ionization signal is measured and converted into a lambda value, that is to say a mixture ratio of air to fuel, according to calibration data (control curve) stored in a calibration data memory 15.
  • a control unit 17 can control the blower 5 and / or the fuel gas valve 6 such that a desired target value for lambda is set. Flame monitoring 16 may also be present.
  • a switchover unit 10 is used to put a second measuring system S2 into operation, which connects a second AC voltage source 12 to the ignition electrode 7 instead of ignition electronics (unless this has already been done for flame monitoring), in a second Evaluation electronics 14 a second ionization signal is measured and evaluated, which also provides an actual value for lambda and enables control of the lambda value by means of the inventive method.
  • this type of control can also be used as a primary control, in parallel to flame monitoring by means of an ignition electrode as the only ionization electrode or by means of a separate ionization electrode only for the control.
  • only the second measuring system S2 has to be present and can be used as the primary control system using its own calibration data.
  • the heater first works in normal operation with a specific supply of fuel gas and an associated speed of the fan 5, the ionization signal I1 being set to a value of z. B. 100 ⁇ A [microAmpere] is regulated by adjusting the speed of the fan and / or the fuel supply. With valid calibration data (map, control curve), this type of control ensures that a desired lambda value is maintained over a large load range. In the event of a fault in this system, a switchover to a can take place instead of a shutdown Emergency running system are triggered. In this case, the first measuring system S1 is switched to the second measuring system S2. A defined speed is started up via the fan 5 and the amount of fuel associated with the stored characteristic curves is set.
  • the measuring system S2 determines a second ionization signal I2 determined by means of the ignition electrode 7. Then the gas supply is left unchanged, while the fan speed is reduced in a defined manner until a value below the desired lambda value is reliably reached, but which is still clearly above a stoichiometric ratio of air to fuel gas, so that hardly any carbon monoxide is produced during this process and there is no excessively high flame temperature (see point “1" in Fig. 3 ). Starting from this lambda value, the speed of the fan 5 is increased until the second ionization signal detects a rise in the flame from the burner 9 due to a sharp rise (see point “2” in FIG Fig. 3 ).
  • the heater can (still) be operated with this type of control as the primary control. If it only serves as emergency operation control, it can be checked each time the heater is restarted whether the primary control is working again and only then switched to emergency operation control if this is not the case.
  • Fig. 2 schematically shows a circuit as it can be used for the measuring system S2.
  • a second AC voltage source 12 with a high output resistance 18 initially supplies an AC voltage without a DC voltage component to the ignition electrode 7 and the counter electrode 9 (ground). If a flame occurs between the two (shown here as an equivalent circuit diagram 19), the voltage drops only in one half-wave due to the rectifying effect of the flame (shown in the equivalent circuit diagram as a diode), so that an alternating voltage occurs at the input of the second evaluation electronics 14 (amplifier and converter) with a negative DC voltage component, which becomes the second ionization signal in the evaluation electronics 14 and can be converted in an analog / digital converter 20 and then processed further.
  • the second evaluation electronics 14 amplifier and converter
  • Fig. 3 qualitatively illustrates what happens in the process of the regulation according to the invention by means of the second measuring system S2.
  • the second ionization signal I2 is plotted on the Y axis (in digitized form as a number between 0 and 1023) against the fan speed [rpm] on the X axis with constant gas supply.
  • the resulting characteristic diagram shows an almost constant initial range, a decrease to a minimum (point "3") and then an increase.
  • the flame begins to detach, which can then become unstable with increasing air supply. Between points “1” and “2", however, the air supply can be varied without generating impermissible amounts of carbon monoxide or instabilities in order to find the minimum at point "3" and use it for control purposes. Because of the described relationship between fan speed and lambda value, the x-axis could also be provided with the lambda value as a scale.
  • the present invention makes it possible, without significant changes to a heater, to set up a reliable emergency operation control only by means of additional electronics, or even to use a method as primary control which does not produce any impermissible amounts of carbon monoxide even during (post) calibration.

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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)
  • Regulation And Control Of Combustion (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
EP20150310.9A 2019-01-29 2020-01-06 Procédé de régulation d'un mélange air-gaz de combustion dans un appareil de chauffage Active EP3690318B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019102128 2019-01-29
DE102019119186.6A DE102019119186A1 (de) 2019-01-29 2019-07-16 Verfahren und Vorrichtung zur Regelung eines Brenngas-Luft-Gemisches in einem Heizgerät

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Publication Number Publication Date
EP3690318A2 true EP3690318A2 (fr) 2020-08-05
EP3690318A3 EP3690318A3 (fr) 2020-09-30
EP3690318B1 EP3690318B1 (fr) 2021-11-24

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ES (1) ES2902463T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3767174A1 (fr) * 2019-07-16 2021-01-20 Vaillant GmbH Procédé et dispositif d'étalonnage ultérieur d'un système de mesure permettant de réguler un mélange gaz-air de combustion dans un appareil de chauffage
EP3988844A1 (fr) * 2020-10-20 2022-04-27 Viessmann Climate Solutions SE Installation de chauffage et procédé de fonctionnement d'une installation de chauffage
EP4092324A1 (fr) 2021-05-21 2022-11-23 Vaillant GmbH Procédé de surveillance du fonctionnement d'un appareil chauffant, appareil chauffant, ainsi que programme informatique et support lisible par ordinateur
EP4279810A1 (fr) * 2022-05-20 2023-11-22 Vaillant GmbH Procédé de fonctionnement d'un appareil de chauffage, programme informatique, appareil de régulation et de commande et appareil de chauffage
EP4545854A1 (fr) * 2023-10-25 2025-04-30 Siemens Aktiengesellschaft Régulation d'un dispositif de combustion

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Publication number Priority date Publication date Assignee Title
DE19502901C1 (de) 1995-01-31 1996-03-21 Stiebel Eltron Gmbh & Co Kg Regeleinrichtung für einen Gasbrenner
DE19539568C1 (de) 1995-10-25 1997-06-19 Stiebel Eltron Gmbh & Co Kg Verfahren und Schaltung zur Regelung eines Gasbrenners
DE19618573C1 (de) 1996-05-09 1997-06-26 Stiebel Eltron Gmbh & Co Kg Verfahren und Einrichtung zum Betrieb eines Gasbrenners
EP0770824B1 (fr) 1995-10-25 2000-01-26 STIEBEL ELTRON GmbH & Co. KG Procédé et circuit pour commander un brûleur à gaz
EP2466204B1 (fr) 2010-12-16 2013-11-13 Siemens Aktiengesellschaft Dispositif de réglage pour une installation de brûleur
EP2014985B1 (fr) 2007-07-13 2017-05-24 Vaillant GmbH Procédé de réglage du rapport air/carburant d'un brûleur fonctionnant au gaz

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Publication number Priority date Publication date Assignee Title
SE507416C2 (sv) * 1997-05-12 1998-05-25 Mecel Ab Metod för återkopplad reglering av insprutningstidpunkten i förbränningsmotorer
ES2646213T3 (es) * 2012-07-04 2017-12-12 Vaillant Gmbh Procedimiento para la supervisión de un quemador que funciona con gas de combustión

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19502901C1 (de) 1995-01-31 1996-03-21 Stiebel Eltron Gmbh & Co Kg Regeleinrichtung für einen Gasbrenner
DE19539568C1 (de) 1995-10-25 1997-06-19 Stiebel Eltron Gmbh & Co Kg Verfahren und Schaltung zur Regelung eines Gasbrenners
EP0770824B1 (fr) 1995-10-25 2000-01-26 STIEBEL ELTRON GmbH & Co. KG Procédé et circuit pour commander un brûleur à gaz
DE19618573C1 (de) 1996-05-09 1997-06-26 Stiebel Eltron Gmbh & Co Kg Verfahren und Einrichtung zum Betrieb eines Gasbrenners
EP2014985B1 (fr) 2007-07-13 2017-05-24 Vaillant GmbH Procédé de réglage du rapport air/carburant d'un brûleur fonctionnant au gaz
EP2466204B1 (fr) 2010-12-16 2013-11-13 Siemens Aktiengesellschaft Dispositif de réglage pour une installation de brûleur

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3767174A1 (fr) * 2019-07-16 2021-01-20 Vaillant GmbH Procédé et dispositif d'étalonnage ultérieur d'un système de mesure permettant de réguler un mélange gaz-air de combustion dans un appareil de chauffage
EP3988844A1 (fr) * 2020-10-20 2022-04-27 Viessmann Climate Solutions SE Installation de chauffage et procédé de fonctionnement d'une installation de chauffage
EP4092324A1 (fr) 2021-05-21 2022-11-23 Vaillant GmbH Procédé de surveillance du fonctionnement d'un appareil chauffant, appareil chauffant, ainsi que programme informatique et support lisible par ordinateur
DE102021113220A1 (de) 2021-05-21 2022-11-24 Vaillant Gmbh Verfahren zur Überwachung des Betriebes eines Heizgerätes, Heizgerät sowie Computerprogramm und computerlesbares Medium
EP4279810A1 (fr) * 2022-05-20 2023-11-22 Vaillant GmbH Procédé de fonctionnement d'un appareil de chauffage, programme informatique, appareil de régulation et de commande et appareil de chauffage
EP4545854A1 (fr) * 2023-10-25 2025-04-30 Siemens Aktiengesellschaft Régulation d'un dispositif de combustion

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Publication number Publication date
EP3690318B1 (fr) 2021-11-24
EP3690318A3 (fr) 2020-09-30
ES2902463T3 (es) 2022-03-28

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