EP3870899A1 - Procédé de contrôle d'un capteur de mélange gazeux et d'un capteur d'ionisation dans un appareil de chauffage fonctionnant au gaz combustible - Google Patents

Procédé de contrôle d'un capteur de mélange gazeux et d'un capteur d'ionisation dans un appareil de chauffage fonctionnant au gaz combustible

Info

Publication number
EP3870899A1
EP3870899A1 EP20723328.9A EP20723328A EP3870899A1 EP 3870899 A1 EP3870899 A1 EP 3870899A1 EP 20723328 A EP20723328 A EP 20723328A EP 3870899 A1 EP3870899 A1 EP 3870899A1
Authority
EP
European Patent Office
Prior art keywords
sensor
gas
ionization
gas mixture
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
EP20723328.9A
Other languages
German (de)
English (en)
Other versions
EP3870899B1 (fr
Inventor
Hartmut Henrich
Stephan Wald
Jens Hermann
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.)
Ebm Papst Landshut GmbH
Original Assignee
Ebm Papst Landshut GmbH
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 Ebm Papst Landshut GmbH filed Critical Ebm Papst Landshut GmbH
Publication of EP3870899A1 publication Critical patent/EP3870899A1/fr
Application granted granted Critical
Publication of EP3870899B1 publication Critical patent/EP3870899B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/025—Regulating fuel supply conjointly with air supply using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N2005/185—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2221/00—Pretreatment or prehandling
    • F23N2221/10—Analysing fuel properties, e.g. density, calorific
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/10—Correlation
    • 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
    • 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
    • F23N2239/00—Fuels
    • F23N2239/04—Gaseous fuels

Definitions

  • the invention relates to a method for checking a gas mixture sensor and ionization sensor with regard to their fault-free function in a fuel gas-operated heater.
  • the state of the art is also a combustion control according to the so-called.
  • SCOT process in which the amount of air supplied to the burner of the heater is controlled according to the burner output.
  • a flame signal measurement is carried out by means of an ionization sensor and the gas-air mixture is regulated to a target ionization measurement value stored in a characteristic curve.
  • the disadvantage of the SCOT process is that the flame signal drops sharply at low burner outputs, making the control unreliable.
  • the applicant also has a method for regulating a gas mixture formed from a gas and a fuel gas in a fuel gas-operated heater, in which the gas mixture is generated by providing a gas quantity via a first actuator and a fuel gas quantity via a second actuator be mixed.
  • Gas mixture sensor which detects at least one material property of the gas mixture, is acted upon by the gas mixture and continuously transmits a sensor signal that is dependent on the respective gas mixture to a control unit.
  • the control unit compares the detected sensor signal with a setpoint value of the sensor signal and controls at least one of the first and second actuators in the event of a discrepancy between the detected sensor signal and the setpoint value of the sensor signal.
  • the gas mixture is adjusted by increasing or decreasing the amount of gas and / or increasing or decreasing the amount of fuel gas until the target value of the sensor signal is reached.
  • the material property of the gas mixture detected by the microthermal gas mixture sensor is preferably the thermal conductivity, the temperature conductivity or the speed of sound of the gas mixture. However, several of these material properties can also be recorded, so that a more precise assignment of the majority of the properties to the gas mixture is possible.
  • the microthermal gas mixture sensor is designed as a gas mass sensor, which records both the gas mixture mass fed to the burner of the heater and other material physical properties.
  • calorimetric microsensors known from the prior art are used for this purpose, which in addition to the thermal conductivity, the thermal conductivity of the gas mixture.
  • Another possibility is at least one gas mass sensor based on the functional principle of ultrasound measurement to determine the gas mixture mass and the respective
  • the setpoint value of the sensor signal is also adapted by the control device as a function of a composition of the gas or of the fuel gas. If the composition of the fuel gas changes (e.g. from propane to butane), the measured properties of the gas mixture change. In addition, different compositions of fuel gas also require different amounts of air for optimal combustion. A new mixing ratio between gas and fuel gas is therefore also required.
  • the composition of the fuel gas changes (e.g. from propane to butane)
  • the measured properties of the gas mixture change.
  • different compositions of fuel gas also require different amounts of air for optimal combustion. A new mixing ratio between gas and fuel gas is therefore also required.
  • Such an adaptation of the setpoint value of the sensor signal takes place by means of a calibration process.
  • the first actuator of the gas amount or the second actuator of the fuel gas amount are changed by the control unit until the desired result is achieved.
  • the original setpoint is replaced by the new measured sensor signal for further mixture control.
  • the calibration process is carried out by an ionization current control of a flame signal from a burner of the heater until a desired ionization value is reached.
  • a stoichiometric combustion of the burner of the heater is first set.
  • the flame signal of the burner of the heater and thus a corresponding ionization current are recorded via an ionization probe.
  • the ionization current is at a maximum.
  • a percentage determined by laboratory technology is used to calculate an ionization setpoint value and stored as a future ionization current setpoint value, which must be achieved for the desired combustion. Then only the amount of gas is reduced by a predetermined factor in order to operate the burner with the desired gas mixture at the predetermined ionization setpoint.
  • the at least one material egg The property of the gas mixture is measured by the gas mixture sensor and stored in the control unit as the new setpoint value of the sensor signal.
  • the new setpoint is used for further control and replaces the previous setpoint.
  • the gas is preferably air, and the fuel gas is preferably liquid gas or natural gas.
  • the object of the present invention is to check the measured sensor values of the gas mixture sensor and the ionization sensor for plausibility, i.e. are checked with regard to their faultless function in order to be able to detect errors in the control process.
  • Gas mixture sensor and ionization sensor with regard to their error-free function on proposed in a fuel gas-operated heater in which a gas mixture is generated by providing and mixing a gas quantity via a first actuator and a fuel gas quantity via a second actuator.
  • the gas mixture sensor is positioned in the gas mixture to detect a material property of the gas mixture and continuously transmits a sensor signal dependent on the respective gas mixture to a control unit.
  • a flame signal is detected via the ionization sensor, an ionization signal is determined from this and transmitted to the control device.
  • a corresponding ionization signal of the ionization sensor is assigned to the gas mixture sensor.
  • the amount of gas or the amount of fuel gas is temporarily changed in a predefined manipulated variable of the first or second actuator, so that the composition of the gas mixture changes as a result.
  • the change in the sensor signal of the gas mixture sensor and the ionization sensor resulting from the change in the mixture Signal of the ionization sensor measured and compared with one another. From the result of the comparison of the respective change in the sensor values, deviations from setpoint values can be recognized and a defective function of the gas mixture sensor or the ionization sensor can be deduced.
  • the amount of fuel gas is preferably changed temporarily in a predefined manipulated variable of the first or second actuator, which can be controlled more precisely than the amount of gas that is usually provided as air via a fan.
  • Gas mixture sensor detectable and comparable with laboratory determined or pre-calculated variables in order to determine a degree of deviation of the signals from a target value. This makes it possible to define a tolerance range for the signals which are considered normal for regular operation. If the deviation is too great outside the tolerance range, a fault diagnosis can be shown in a display of the heater, for example will.
  • the inventive method is preferably applied continuously during the mixture control and the sensor signal of the
  • a further development of the method provides that to check the
  • Gas mixture sensor and the ionization sensor the amount of gas or the amount of fuel gas is changed cyclically in several steps in predefined control variables of the first or second actuator and the change in the sensor signal of the gas mixture sensor and the ionization signal of the ionization sensor in several of the steps resulting from the steps Operating points are measured and compared with each other.
  • the calibration process described above by the ionization current regulation is used in an advantageous embodiment of the method in order to establish a prior assignment of several signal values of the gas mixture sensor and ionization sensor in the various operating points.
  • the calibration process is preferably carried out repeatedly, so that sensor signals of the gas mixture sensor that correspond to several different ionization signals are assigned.
  • the relationship between the ionization signal and the sensor signal at the various operating points results in a target characteristic in a diagram of the ionization signal-sensor signal, which is stored in the control device.
  • At least one tolerance corridor is preferably provided around the target characteristic, which indicates operation outside the normal, so that if the characteristic curve deviates too much from the target characteristic, the mixture control can either be calibrated or the heater can even be switched off if necessary .
  • a further development of the method is characterized in that a gas sensor and / or a fuel gas sensor for detecting at least one of the material property of the gas or the fuel gas is used.
  • the material property of the gas is measured via the gas sensor and the material property of the fuel gas is measured via the fuel gas sensor, whereby it is advantageous that the signals from the gas sensor and the fuel gas sensor are used respective end points of the sensor characteristic of the sensor signal of the gas mixture sensor can be determined.
  • the first end point is determined by pure fuel gas, the second end point by pure gas, in particular air.
  • Gas mixture sensor and the ionization signal of the ionization sensor are determined in advance.
  • the characteristic curve and thus the operating points expected on the characteristic curve can be calculated in advance, so that a target sensor signal is determined for each of the operating points resulting from the steps.
  • one embodiment of the method provides that only one additional sensor, i.e. only the gas sensor or only the fuel gas sensor is added.
  • the amount of fuel gas can be calculated more precisely in advance.
  • one step of changing, for example, the amount of fuel gas can be sufficient to detect the deviations in the sensor signal of the gas mixture sensor.
  • the gas mixture sensor, the gas sensor and / or the fuel gas sensor are provided redundantly.
  • Each of the redundantly provided gas mixture sensors, gas sensors and / or fuel gas sensors advantageously supplies its own signal to the Steuerge advises, which are checked for plausibility and therefore the sensors are checked for their correct function.
  • Gas mixture sensor when the fuel gas quantity is increased according to FIG. 6, 8 shows a resulting characteristic curve of the ionization signal of the ionization sensor when the fuel gas quantity is increased according to FIG. 6,
  • the actuator 4 for supplying a controllable amount of air 2 and the actuator 3 for supplying a controllable amount of fuel gas 1 are regulated in their respective open positions via the control device 11 to the gas mixture 9 in a certain fuel gas-air mixture ratio to create.
  • the gas mixture sensor 10 is positioned in the area of the gas mixture 9 and the gas mixture 9 is applied.
  • the fuel gas sensor 6 is positioned in the fuel gas path 5 and the gas sensor 8 is positioned in the gas path 7, and these sensors also supply signals to the control unit 11.
  • the control device 11 and the regulation are monitored via a process monitoring unit 12.
  • Figure 2 shows a specific embodiment of a fuel gas-operated heater 200 with a gas safety valve 101, a gas control valve 102 as an actuator for the amount of fuel gas 103, a mixing fan 107 for
  • the heater 200 comprises the microthermal gas mixture sensor 106, a second gas mixture sensor 108 being shown as an alternative installation position in the blow-out area of the mixing fan 107. In principle, however, no second gas mixture sensor is required.
  • the mixing fan 107 promotes the gas mixture 105 to burner 109, on which the ionization sensor 111 with the ionization electrode is installed in order to monitor the burner flame.
  • the signal lines to and from the control unit 100 which processes the regulation of the gas mixture 105, are shown via arrows.
  • a diagram 30 shows a simplified linear relationship used for the regulation between the sensor signal 31 detected by the gas mixture sensor 10 for pure air 2 (reference symbol 34 corresponds to 100% air) and the sensor signal 32 for pure fuel gas 1 (reference symbol 36 ent speaks 100% fuel gas).
  • the sensor signal 33 lies in between. The quantities of air 2 and fuel gas 1 are adjusted via the respective actuators 3 and / or 4 until the required by the process
  • FIG. 3 shows a linear profile of the characteristic curve of the sensor signal, but non-linear characteristic curves are also possible which, for example, enable regulation of the corresponding positions of the actuators 3, 4 via value tables.
  • the sensor signal decreases the more fuel gas 1 is supplied.
  • the sensor signal is shown as a function of the thermal conductivity as a material property of the gas mixture 9, the fuel gas being liquid gas for example and the thermal conductivity of liquid gas being lower than that of air.
  • the fuel gas 1 is natural gas, the thermal conductivity of which is higher than that of air.
  • FIG. 4 a simplified linear relationship between that detected by the gas mixture sensor 10 and used for the regulation Sensor signal 42 for pure air 2 (reference number 44 corresponds to 100% air) and the sensor signal 41 for pure fuel gas 1 (reference number 46 corresponds to 100% fuel gas / natural gas).
  • the sensor signal 43 is between, but close to, the sensor signal 41 of pure fuel gas 1.
  • the control unit 11 adds the signal change from the gas mixture sensor 10 the direction of action of the control determines the increase in the amount of fuel gas and is used as the basis for further mixture control.
  • FIG. 5 shows a diagram 20 for calibration by means of ionization current regulation with a characteristic curve of the ionization signal (lo signal) recorded by the ionization electrode in the burner flame versus the fuel gas / air ratio l. Since the basic structure according to FIG. 1 does not show an ionization electrode, reference is made below to the heater 200 according to FIG.
  • the control device 100 controls the amount of air 104 during burner operation to a predetermined value, the ionization signal at the ionization electrode of the ionization sensor 111 is measured on the burner 109 and the amount of fuel gas 103 is increased until the ionization signal changes from the originally present ionization value 21 has risen to the maximum 22 at a fuel gas / air ratio 24.
  • the ionization target value 23 is calculated with a laboratory-technically determined percentage and stored as the future ionization current target value, which the desired fuel gas / air ratio 25 must be achieved with a higher air excess.
  • a corresponding sensor signal of the gas mixture sensor 108 is stored for each value of the ionization signal.
  • characteristic curves are shown in diagrams which convey an exemplary embodiment for the method for checking the gas mixture sensor 108 and ionization sensor 111 with regard to their error-free function in the heating device 200 operated by fuel gas.
  • the amount of fuel gas is increased as a parameter.
  • the procedure is similarly carried out by a Change of air volume can be carried out.
  • the gas control valve 102 is activated via the control device 100 in such a way that the fuel gas quantity F increases as a function of the open position P of the gas control valve 102.
  • the characteristic curve 80 represents a flow characteristic curve of the fuel gas. In the embodiment shown, the increase takes place step by step from points a, b, c, d, e, the fuel gas quantity F increasing essentially constantly above a fixed amount 81.
  • the change in the amount of fuel gas causes, with the amount of air remaining unchanged, a shift in the mixture composition in% of fuel gas and air and consequently a changing sensor signal S of the gas mixture sensor 108, as shown in FIG.
  • the two end points 61, 65 of the sensor characteristic 60 determine the mixture composition in% at reference number 65, pure air or, at reference number 66, pure fuel gas.
  • the amount of fuel to test mixture composition 67 identified in FIG. 7 by reference number 67, is increased in sub-steps abcd, the sensor signal S im increasing error-free operation changed by a signal difference 72.
  • the sensor signal S im increasing error-free operation changed by a signal difference 72.
  • the ionization signal increases from a value which is indicated by reference symbol 23 at point a to a maximum value of the stoichiometric combustion which is indicated by reference symbol 22 at point d. If the gas mixture is further enriched to point e, the ionization signal drops again.
  • each step a, b, c, d, e of the assignment of the respective sensor signal (S) of the gas mixture sensor 108 of the corresponding ionization signal (lo signal) of the ionization sensor 111 results in the target characteristic curve 95 two tolerance limits T1 and T2 for establishing the tolerance corridor are shown in dashed lines. If there is a deviation in the direction of the arrow A, there is a function of the gas mixture sensor 108 outside the normal values, since with an increase in the amount of fuel gas according to FIG. 7, the ionization signal increases significantly more than the sensor signal.
  • the ionization sensor 111 If there is a deviation in the direction of arrow B, the ionization sensor 111 is functioning outside the normal values, since if the amount of fuel gas is increased according to FIG. 7, the sensor signal increases significantly more than the ionization signal.
  • a deviation in the direction of the arrow A indicates a faulty function of the gas mixture sensor 108
  • a deviation in the direction of the arrow B indicates a faulty function of the ionization sensor 111.
  • the mixture regulation of the meat appliance 200 by the control unit 100 then follows via the sensor that is not working incorrectly until the necessary maintenance has been carried out.
  • the error and maintenance requirement is displayed on the meat appliance 200 via the display and / or transmitted directly to the Fiersteller.
  • the meat curing device 200 is switched off.
  • the method also includes embodiments without these additional sensors or with only one fuel gas sensor or gas sensor.

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  • 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)
  • Regulation And Control Of Combustion (AREA)

Abstract

L'invention concerne un procédé de contrôle d'un capteur de mélange gazeux et d'un capteur d'ionisation quant à leur fonctionnement sans défaut dans un appareil de chauffage fonctionnant au gaz combustible, un mélange gazeux étant produit par fourniture et mélange d'une quantité de gaz via un premier actionneur (4, 107) et d'une quantité de gaz combustible via un second actionneur (3, 102). Le capteur de mélange gazeux est positionné dans le mélange gazeux pour détecter une propriété matérielle du mélange gazeux (9, 105) et transmet en continu un signal de capteur dépendant du mélange gazeux respectif à une unité de commande (11, 100). Un signal de flamme est détecté sur un brûleur (109) de l'appareil de chauffage (200) via le capteur d'ionisation et un signal d'ionisation est déterminé à partir de celui-ci et transmis à l'unité de commande (11, 100), un signal d'ionisation correspondant du capteur d'ionisation étant associé au signal de capteur respectif du capteur de mélange gazeux. Pour le contrôle du capteur de mélange gazeux et du capteur d'ionisation, la quantité de gaz ou la quantité de gaz combustible est modifiée temporairement dans une grandeur de réglage prédéfinie du premier ou du deuxième actionneur, de sorte que le mélange gazeux change et qu'en même temps, la modification résultante respective du signal du capteur de mélange gazeux et du signal d'ionisation du capteur d'ionisation est mesurée et comparée entre elles.
EP20723328.9A 2019-04-29 2020-04-28 Procédé de contrôle d'un capteur de mélange gazeux et d'un capteur d'ionisation dans un appareil de chauffage fonctionnant au gaz combustible Active EP3870899B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019110976.0A DE102019110976A1 (de) 2019-04-29 2019-04-29 Verfahren zur Überprüfung eines Gasgemischsensors und Ionisationssensors bei einem brenngasbetriebenen Heizgerät
PCT/EP2020/061784 WO2020221758A1 (fr) 2019-04-29 2020-04-28 Procédé de contrôle d'un capteur de mélange gazeux et d'un capteur d'ionisation dans un appareil de chauffage fonctionnant au gaz combustible

Publications (2)

Publication Number Publication Date
EP3870899A1 true EP3870899A1 (fr) 2021-09-01
EP3870899B1 EP3870899B1 (fr) 2023-11-01

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EP20723328.9A Active EP3870899B1 (fr) 2019-04-29 2020-04-28 Procédé de contrôle d'un capteur de mélange gazeux et d'un capteur d'ionisation dans un appareil de chauffage fonctionnant au gaz combustible

Country Status (3)

Country Link
EP (1) EP3870899B1 (fr)
DE (1) DE102019110976A1 (fr)
WO (1) WO2020221758A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021113220A1 (de) 2021-05-21 2022-11-24 Vaillant Gmbh Verfahren zur Überwachung des Betriebes eines Heizgerätes, Heizgerät sowie Computerprogramm und computerlesbares Medium
DE102022112785A1 (de) 2022-05-20 2023-11-23 Vaillant Gmbh Verfahren zum Betreiben eines Heizgerätes, Computerprogramm, Regel- und Steuergerät und Heizgerät

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0498809B2 (fr) * 1989-10-30 1997-10-29 Honeywell Inc. Commande de combustion
DE10113468A1 (de) * 2000-09-05 2002-03-14 Siemens Building Tech Ag Regeleinrichtung für einen Luftzahlgeregelten Brenner
DE102004055716C5 (de) * 2004-06-23 2010-02-11 Ebm-Papst Landshut Gmbh Verfahren zur Regelung einer Feuerungseinrichtung und Feuerungseinrichtung (Elektronischer Verbund I)
DE102010046954B4 (de) * 2010-09-29 2012-04-12 Robert Bosch Gmbh Verfahren zur Kalibrierung, Validierung und Justierung einer Lambdasonde
DE102011079325B4 (de) * 2011-07-18 2017-01-26 Viessmann Werke Gmbh & Co Kg Verfahren zur Luftzahlregelung eines Brenners
DE202019100263U1 (de) * 2019-01-17 2019-02-04 Ebm-Papst Landshut Gmbh Heizgerät mit Regelung eines Gasgemisches unter Nutzung eines Gassensors, eines Brenngassensors und eines Gasgemischsensors
DE202019100261U1 (de) * 2019-01-17 2019-02-04 Ebm-Papst Landshut Gmbh Heizgerät mit Regelung eines Gasgemisches

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Publication number Publication date
EP3870899B1 (fr) 2023-11-01
DE102019110976A1 (de) 2020-10-29
WO2020221758A1 (fr) 2020-11-05

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