EP3690318A3 - Method and device for regulating a fuel-air mixture in a heating device - Google Patents

Method and device for regulating a fuel-air mixture in a heating device Download PDF

Info

Publication number
EP3690318A3
EP3690318A3 EP20150310.9A EP20150310A EP3690318A3 EP 3690318 A3 EP3690318 A3 EP 3690318A3 EP 20150310 A EP20150310 A EP 20150310A EP 3690318 A3 EP3690318 A3 EP 3690318A3
Authority
EP
European Patent Office
Prior art keywords
speed
ionization signal
fuel gas
heater
minimum
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
Other languages
German (de)
French (fr)
Other versions
EP3690318B1 (en
EP3690318A2 (en
Inventor
Heinz-Jörg Tomczak
Christian Schwarz
Stefan Hucke
Jochen Grabe
Tobias Funke
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.)
Vaillant GmbH
Original Assignee
Vaillant 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
Priority claimed from DE102019119186.6A external-priority patent/DE102019119186A1/en
Application filed by Vaillant GmbH filed Critical Vaillant GmbH
Publication of EP3690318A2 publication Critical patent/EP3690318A2/en
Publication of EP3690318A3 publication Critical patent/EP3690318A3/en
Application granted granted Critical
Publication of EP3690318B1 publication Critical patent/EP3690318B1/en
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
    • 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

Landscapes

  • 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)

Abstract

Die Erfindung betrifft ein Verfahren zur Regelung einer Verbrennung in einem Heizgerät (1) mittels eines in einem Flammenbereich (2) des mit Verbrennungsluft und Brenngas betriebenen Heizgerätes (1) gemessenen lonisationssignals, welches aus einem von einer lonisationselektrode (8) zu einer Gegenelektrode (9) durch den Flammenbereich (2) fließenden lonenstrom abgeleitet wird, wobei der Lambda-Wert bei der Verbrennung in dem Heizgerät (1) anhand von Kalibrierdaten aus dem lonisationssignal bestimmt und mittels Einstellung der Zufuhr an Brenngas und/oder der Zufuhr an Verbrennungsluft geregelt wird, mit folgenden Schritten: ein Gebläse (5) zur Zufuhr von Verbrennungsluft wird auf eine vorgebbare Drehzahl gebracht, ein Brenngasventil (6) wird mittels einer vorgebbaren Kennlinie auf eine dieser Drehzahl zugeordnete Stellung gebracht, in dieser Stellung wird das Brenngasventil (6) festgehalten, die Drehzahl wird um einen vorgebbaren Betrag reduziert, anschließend wird die Drehzahl erhöht und das jeweilige Ionisationssignal (I2) gemessen, dabei wird ein Minimum des Ionisationssignals (I2) festgestellt und gespeichert, die Gebläsedrehzahl wird weiter erhöht, bis ein vorgebbarer Schwellwert des Ionisationssignals (I2) relativ zum Minimum erreicht wird, danach wird die Gebläsedrehzahl auf die zu dem Minimum gehörige Gebläsedrehzahl reduziert und dort für eine Zeitspanne (t) gehalten oder zur Regelung des Ionisationssignals (I2) auf den aktuellen konstanten Wert genutzt, nach Ablauf der Zeitspanne (t) werden die Schritte ab 1.4 wiederholt. Das Verfahren kann als Betriebsregelung oder als Notlaufverfahren bei Ausfall einer anderen primären Betriebsregelung genutzt werden.The invention relates to a method for regulating combustion in a heater (1) by means of an ionization signal measured in a flame area (2) of the heater (1) operated with combustion air and fuel gas, which is transmitted from an ionization electrode (8) to a counter electrode (9 ) ion stream flowing through the flame area (2) is derived, the lambda value during combustion in the heater (1) being determined on the basis of calibration data from the ionization signal and being regulated by adjusting the supply of fuel gas and / or the supply of combustion air, with the following steps: a fan (5) for supplying combustion air is brought to a predeterminable speed, a fuel gas valve (6) is brought to a position assigned to this speed by means of a predeterminable characteristic curve, in this position the fuel gas valve (6) is held, which The speed is reduced by a specifiable amount, then the speed is increased d the respective ionization signal (I2) is measured, a minimum of the ionization signal (I2) is determined and stored, the fan speed is increased further until a predefinable threshold value of the ionization signal (I2) is reached relative to the minimum, then the fan speed is increased to The fan speed corresponding to the minimum is reduced and held there for a period of time (t) or used to control the ionization signal (I2) to the current constant value, after the period of time (t) has elapsed, steps from 1.4 are repeated. The method can be used as an operational control or as an emergency operation if another primary operational control fails.

EP20150310.9A 2019-01-29 2020-01-06 Method for regulating a fuel-air mixture in a heating device Active EP3690318B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019102128 2019-01-29
DE102019119186.6A DE102019119186A1 (en) 2019-01-29 2019-07-16 Method and device for controlling a fuel gas-air mixture in a heater

Publications (3)

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

Family

ID=69137771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20150310.9A Active EP3690318B1 (en) 2019-01-29 2020-01-06 Method for regulating a fuel-air mixture in a heating device

Country Status (2)

Country Link
EP (1) EP3690318B1 (en)
ES (1) ES2902463T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019119214A1 (en) * 2019-07-16 2021-01-21 Vaillant Gmbh Method and device for recalibrating a measuring system for regulating a fuel gas-air mixture in a heating device
DE102020127558B4 (en) * 2020-10-20 2023-06-29 Viessmann Climate Solutions Se Heating system and method for operating a heating system
DE102021113220A1 (en) 2021-05-21 2022-11-24 Vaillant Gmbh Method for monitoring the operation of a heater, heater and computer program and computer-readable medium
DE102022112785A1 (en) * 2022-05-20 2023-11-23 Vaillant Gmbh Method for operating a heater, computer program, control and control device and heater

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6032650A (en) * 1997-05-12 2000-03-07 Mecel Ab Method for closed-loop control of injection timing in combustion engines
EP2014985A2 (en) * 2007-07-13 2009-01-14 Vaillant GmbH Method of adjusting the air/fuel ratio for a gas fired burner
EP2682679A2 (en) * 2012-07-04 2014-01-08 Vaillant GmbH Method for monitoring a gas fuelled burner

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19502901C2 (en) 1995-01-31 2000-02-24 Stiebel Eltron Gmbh & Co Kg Control device for a gas burner
DE19618573C1 (en) 1996-05-09 1997-06-26 Stiebel Eltron Gmbh & Co Kg Gas burner regulating method controlled by ionisation electrode signal
ATE189301T1 (en) 1995-10-25 2000-02-15 Stiebel Eltron Gmbh & Co Kg METHOD AND CIRCUIT FOR CONTROLLING A GAS BURNER
DE19539568C1 (en) 1995-10-25 1997-06-19 Stiebel Eltron Gmbh & Co Kg Gas burner regulation system
ES2441226T3 (en) 2010-12-16 2014-02-03 Siemens Aktiengesellschaft Regulation device for a burner installation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6032650A (en) * 1997-05-12 2000-03-07 Mecel Ab Method for closed-loop control of injection timing in combustion engines
EP2014985A2 (en) * 2007-07-13 2009-01-14 Vaillant GmbH Method of adjusting the air/fuel ratio for a gas fired burner
EP2682679A2 (en) * 2012-07-04 2014-01-08 Vaillant GmbH Method for monitoring a gas fuelled burner

Also Published As

Publication number Publication date
EP3690318B1 (en) 2021-11-24
ES2902463T3 (en) 2022-03-28
EP3690318A2 (en) 2020-08-05

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