EP1207340A2 - Procédé de réglage d'un brûleur - Google Patents

Procédé de réglage d'un brûleur Download PDF

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Publication number
EP1207340A2
EP1207340A2 EP01126826A EP01126826A EP1207340A2 EP 1207340 A2 EP1207340 A2 EP 1207340A2 EP 01126826 A EP01126826 A EP 01126826A EP 01126826 A EP01126826 A EP 01126826A EP 1207340 A2 EP1207340 A2 EP 1207340A2
Authority
EP
European Patent Office
Prior art keywords
phase
gas
flame signal
control
setpoint
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
EP01126826A
Other languages
German (de)
English (en)
Other versions
EP1207340B1 (fr
EP1207340A3 (fr
Inventor
Christian Buchczyk
Harald Hummel
Heinrich Oehler
Hans-Joachim Ripplinger
Jürgen Dr. Sterlepper
Marco Techt
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.)
Bosch Thermotechnik GmbH
Original Assignee
Buderus Heiztechnik 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 DE10057224A external-priority patent/DE10057224C2/de
Priority claimed from DE10057234A external-priority patent/DE10057234C2/de
Priority claimed from DE10057225A external-priority patent/DE10057225C2/de
Priority claimed from DE20101085U external-priority patent/DE20101085U1/de
Application filed by Buderus Heiztechnik GmbH filed Critical Buderus Heiztechnik GmbH
Publication of EP1207340A2 publication Critical patent/EP1207340A2/fr
Publication of EP1207340A3 publication Critical patent/EP1207340A3/fr
Application granted granted Critical
Publication of EP1207340B1 publication Critical patent/EP1207340B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/60—Devices for simultaneous control of gas and combustion air
    • 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
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/725—Protection against flame failure by using flame detection devices
    • 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

Definitions

  • the invention relates to a method for controlling a gas burner for a heater according to the preamble of patent claim 1.
  • the gas nozzles are divided into at least two groups with different positions on the gas distributor and are each connected to their own gas supply. This results in a main and a secondary gas flow, so that each venturi tube of a fuel rod is assigned a main and at least one secondary gas nozzle.
  • at least one secondary gas stream is introduced into the mixing chamber in addition to the main gas stream.
  • the air ratio lambda in the mixing room is reduced because the injector effect of the main gas flow also draws in the secondary gas.
  • the gas burners have combustion sensors, such as a measuring electrode. Flame signals are often detected or formed, in particular with ionization electrodes. The gas / air ratio of the burner can then be set to a corresponding lambda value via the secondary gas flow.
  • the ionization electrode transmits an electrical variable derived from the combustion temperature or the lambda value to a control circuit which compares this variable with a selected electrical setpoint and sets corresponding control parameters as specifications. Since the flame signal for combustion control is influenced by various factors, automatic calibration is usually carried out at regular intervals. Such a calibration method is described in DE 195 39 568 C1. It should be started after a certain number of operating hours or when the gas burner is switched on.
  • the invention is based on the object of a method for automatic functional testing for gas / air compound control on a gas burner for a heater to create the gas / air ratio in a narrow working area during operation to keep.
  • the method of controlling the gas / air ratio in a gas burner for a is characterized in that each time the burner is started after the ignition the entire chain of effects of the gas / air network regulation is checked and that a Calibration at burner start is carried out when comparing the last control parameters Limit values for deviations specified with previous control parameters be exceeded or undercut.
  • the setpoint for the flame signal is changed in the gas / air compound control. This is preferably done within a starting sequence controlled according to predetermined values before regulated, stationary burner operation. During the entire check of the gas / air compound control, there must always be an increasing flame signal in connection with an increasing opening state of the actuator or a falling flame signal in connection with a decreasing opening state of the actuator to ensure that the control circuit works correctly.
  • a first phase which immediately follows the ignition of the gas burner, the actuator for the secondary gas flow is first brought to the initial position so that the largest possible adjustment range is available. This is necessary because it can be opened relatively wide during the starting process, on the one hand to ensure reliable flame formation and on the other hand to achieve a relatively lean combustion.
  • the setpoint for the flame signal is then raised by a fixed amount A.
  • the new setpoint must be reached within a permissible time and / or with a permissible deviation with the flame signal by the gas / air compound control.
  • a third phase begins in which the new setpoint is reduced again by an amount B at the beginning. This must also be achieved with the flame signal within the permissible time and / or with a permissible deviation for the third phase by moving the actuator.
  • the chain of effects is checked and the original setpoint for the flame signal applies again. If the check is positive, the gas burner goes into normal operation. In the event of a negative curve, i.e.
  • the amount B for the new setpoint of the flame signal is preferably chosen to be smaller than the amount A.
  • the amount A is added to the setpoint of the flame signal if the current flame signal at this time is less than or equal to the setpoint. In the other case, if the current flame signal is greater than the target value at this time, the amount A is added to the value of the current flame signal at the beginning of the second phase.
  • the values for amounts A and B as well as the permissible duration of the phases can be freely entered or changed on the burner control unit within specified limits. If the flame signal reaches the setpoint before the permissible time in the second and / or third phase, the process of the check is accelerated. This then immediately goes into the third phase during the second phase or the gas / air compound control then works immediately during the third phase depending on the current flame signal and a setpoint. In addition to this, the check also passes from the second to the third phase if the flame signal does not reach the setpoint in the permissible time of the second phase, but is at the end of the period a certain, permissible amount below the specified setpoint.
  • a transition to the third phase also takes place if the prevailing flame signal at the end of the second phase is greater than the value of the flame signal stored at the end of the first phase.
  • the gas / air compound control operates after the third phase depending on the current flame signal and a setpoint if the flame signal does not reach the setpoint in the permissible time of the third phase, but at the end of this period by a certain, permissible amount above predetermined setpoint.
  • the flame signal prevailing at the end of the third phase is compared with the flame signal stored at the end of the second phase.
  • the gas / air compound control only switches to operation after the third phase depending on the current flame signal and a setpoint if the measured flame signal at the end of the third phase is smaller than the stored one at the end of the second phase.
  • calibration is initiated when predetermined limit values for the position of a gas actuator and / or for the air volume are reached as control parameters.
  • the gas actuator for the secondary gas stream is monitored and its control signal is used as a control parameter for assessing the need for calibration, because the burner gas is used to modulate the burner or adjust the gas / air ratio.
  • the measured values are evaluated at the end of each heat request.
  • the control variable of the gas actuator or the position of the gas actuator is recorded in order to infer the gas throughput.
  • the calibration is also initiated if there is a deviation of the measured value for the current at the gas actuator or its position from an average when there is a heat request with a shutdown during operation.
  • This mean value is preferably formed from the last measured values, the oldest being always replaced by the most current. In the event of a power failure, the last measured values remain saved.
  • all available storage locations for measured values can also be assigned the same value, preferably the last mean value.
  • a calibration is initiated if the measured value for the control variable of the gas actuator or its position lies outside a tolerance band that can be set on the controller. This makes it possible to adapt the calibration to strongly fluctuating operating or environmental conditions. Basically, a comparison of the last control parameters with saved, previous control parameters takes place each time the burner is started.
  • a method for automatic function check for a gas / air compound control on a gas burner at every start is created, with which the entire chain of effects is recorded in the control loop of the gas / air compound control.
  • Both directions of action for the mixture control namely increasing and reducing the amount of secondary gas, are tested by specifying corresponding setpoints for the flame signal. A signal change must then occur within a correspondingly defined time window.
  • the process can be combined with many different combustion sensors, is part of the fixed, controlled start sequence, and connects directly to the ignition of the main burner.
  • the gas / air ratio control is calibrated before the stationary burner operation, which is based on the values determined by the combustion sensors, begins.
  • the calibration according to the method according to the invention results in safe operation of the gas burner with changing gas / air conditions in successive running cycles.
  • the calibration is dynamic and variable. With this adaptation to changing boundary conditions, lockouts are avoided and optimal burner operation is guaranteed at all times.
  • the method for operating a gas burner is characterized in that, after a safety shutdown, the gas burner restarts and a calibration integrated in the starting sequence is carried out.
  • a fault lock-out only occurs if, after a predetermined number of safety shutdowns with subsequent calibrations, the signals from the combustion sensor are still outside the permissible control range. This avoids lockouts or unnecessary switching on and off of a gas burner.
  • the multiple calibration ensures that the burner is operated as automatically as possible, which increases the availability of the gas burner or the heater. The device is locked only in the event that the ambient conditions make burner operation impossible.
  • the drawing shows an embodiment of the invention and shows in a single figure a diagram with the schematic sequence of a check of the gas / air composite control on a gas burner.
  • the setpoint (S) for the flame signal (F), the current flame signal (F) and the opening state ( ⁇ ) of the actuator for the secondary gas flow are plotted on the time axis.
  • the sequence shown follows directly on the starting phase with over-ignition, which requires a relatively wide opening state ⁇ of the actuator for the secondary gas flow. Therefore, in phase 1 the actuator is first brought to the minimum position. At the beginning of phase 2, the setpoint S for the flame signal F is then raised by a fixed amount A.
  • phase 2 the setpoint S must be reached from the current flame signal F by readjusting with the actuator of the gas / air compound control.
  • phase 3 the new setpoint S is initially reduced by an amount B in order to make a change in the flame signal F associated with the reduction in the amount of secondary gas up to the corresponding setpoint S within the predetermined time.
  • a number of successive burner starts with arbitrary values is shown as an assumption for measured and stored control parameters, for example for the Position of a gas actuator.
  • the value 1 is the oldest in memory and will always be replaced by the latest value 3. From these three exemplary measured values - or alternatively also from a higher number - a current average is formed in each case.
  • This The mean value is provided with a tolerance band that can be adjusted to the operating conditions, which in the exemplary embodiment shown allows a deviation of ⁇ 3.
  • everyone individual measured value must be within the specified tolerances. If not If so, a calibration is carried out the next time the burner is started. For example, in the table the value 26 twice below the current permissible for the respective burner start Limit of 27.0 or 26.3 and requires calibration.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
EP01126826A 2000-11-18 2001-11-10 Procédé de réglage d'un brûleur Expired - Lifetime EP1207340B1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DE10057224A DE10057224C2 (de) 2000-11-18 2000-11-18 Verfahren zur automatischen Funktionsüberprüfung bei einer Gas/Luft-Verbundregelung
DE10057234 2000-11-18
DE10057224 2000-11-18
DE10057225 2000-11-18
DE10057234A DE10057234C2 (de) 2000-11-18 2000-11-18 Verfahren zur Regelung eines Gasbrenners für ein Heizgerät
DE10057225A DE10057225C2 (de) 2000-11-18 2000-11-18 Verfahren zum Betrieb eines Gasbrenners für ein Heizgerät
DE20101085U 2001-01-20
DE20101085U DE20101085U1 (de) 2001-01-20 2001-01-20 Gasbrenner

Publications (3)

Publication Number Publication Date
EP1207340A2 true EP1207340A2 (fr) 2002-05-22
EP1207340A3 EP1207340A3 (fr) 2002-07-31
EP1207340B1 EP1207340B1 (fr) 2005-01-12

Family

ID=27437901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01126826A Expired - Lifetime EP1207340B1 (fr) 2000-11-18 2001-11-10 Procédé de réglage d'un brûleur

Country Status (3)

Country Link
EP (1) EP1207340B1 (fr)
AT (1) ATE287065T1 (fr)
DE (1) DE50105055D1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1515089A2 (fr) * 2003-09-09 2005-03-16 Honeywell B.V. Procédé de contrôle pour un brûleur à gaz
EP1522790A3 (fr) * 2003-10-08 2006-01-04 Vaillant GmbH Procédé de régulation d'un brûleur à gaz, en particulier dans des installations de chauffe avec ventilateur
WO2007093312A1 (fr) * 2006-02-14 2007-08-23 Ebm-Papst Landshut Gmbh Procédé pour mettre en marche un système de chauffage dans des conditions générales inconnues
EP2103873A2 (fr) 2008-03-20 2009-09-23 Linde AG Dispositif pour contrôler un mélange de deux fluides
EP3477201A1 (fr) * 2017-10-26 2019-05-01 Honeywell Technologies Sarl Procédé de fonctionnement d'un appareil à brûleur à gaz
WO2022234359A1 (fr) * 2021-05-05 2022-11-10 Ariston S.P.A. Procédé de régulation d'un brûleur à gaz prémélangé et dispositif de commande et de régulation pour la mise en oeuvre du procédé
US11608984B1 (en) 2017-11-30 2023-03-21 Brunswick Corporation Systems for avoiding harmonic modes of gas burners
US11608983B2 (en) * 2020-12-02 2023-03-21 Brunswick Corporation Gas burner systems and methods for calibrating gas burner systems
US11940147B2 (en) 2022-06-09 2024-03-26 Brunswick Corporation Blown air heating system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007060073B3 (de) * 2007-12-13 2009-08-20 Robert Bosch Gmbh Verfahren zum Starten eines Gasbrenners

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19539568C1 (de) 1995-10-25 1997-06-19 Stiebel Eltron Gmbh & Co Kg Verfahren und Schaltung zur Regelung eines Gasbrenners

Family Cites Families (7)

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GB9402018D0 (en) * 1994-02-02 1994-03-30 British Gas Plc Apparatus for detecting faults in a combustion sensor
EP0861402A1 (fr) * 1995-11-13 1998-09-02 Gas Research Institute Appareil et procede de commande d'ionisation de flamme
ES2158400T3 (es) * 1996-05-09 2001-09-01 Stiebel Eltron Gmbh & Co Kg Procedimiento para el funcionamiento de un quemador de gas.
DE19831648B4 (de) * 1998-07-15 2004-12-23 Stiebel Eltron Gmbh & Co. Kg Verfahren zur funktionalen Adaption einer Regelelektronik an ein Gasheizgerät
DE19839160B4 (de) * 1998-08-28 2004-12-23 Stiebel Eltron Gmbh & Co. Kg Verfahren und Schaltung zur Regelung eines Gasbrenners
DE19854824C1 (de) * 1998-11-27 2000-06-29 Stiebel Eltron Gmbh & Co Kg Verfahren und Schaltung zur Regelung eines Gasbrenners
DE19906583A1 (de) * 1999-02-17 2000-08-24 Buderus Heiztechnik Gmbh Verfahren und Vorrichtung zum Betrieb eines atmosphärischen Gasbrenners

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19539568C1 (de) 1995-10-25 1997-06-19 Stiebel Eltron Gmbh & Co Kg Verfahren und Schaltung zur Regelung eines Gasbrenners

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1515089A3 (fr) * 2003-09-09 2009-03-11 Honeywell Technologies Sarl Procédé de contrôle pour un brûleur à gaz
EP1515089A2 (fr) * 2003-09-09 2005-03-16 Honeywell B.V. Procédé de contrôle pour un brûleur à gaz
EP1522790A3 (fr) * 2003-10-08 2006-01-04 Vaillant GmbH Procédé de régulation d'un brûleur à gaz, en particulier dans des installations de chauffe avec ventilateur
US8721325B2 (en) 2006-02-14 2014-05-13 Ebm-Papst Landshut Gmbh Method for starting a combustion device under unknown basic conditions
WO2007093312A1 (fr) * 2006-02-14 2007-08-23 Ebm-Papst Landshut Gmbh Procédé pour mettre en marche un système de chauffage dans des conditions générales inconnues
EP2103873A2 (fr) 2008-03-20 2009-09-23 Linde AG Dispositif pour contrôler un mélange de deux fluides
DE102008015311A1 (de) 2008-03-20 2009-09-24 Linde Ag Vorrichtung zur Gemischüberwachung für Gasgemische aus zwei Gasen
EP3477201A1 (fr) * 2017-10-26 2019-05-01 Honeywell Technologies Sarl Procédé de fonctionnement d'un appareil à brûleur à gaz
WO2019081464A1 (fr) * 2017-10-26 2019-05-02 Honeywell Technologies Sarl Procédé pour faire fonctionner un appareil de type brûleur à gaz
US11608984B1 (en) 2017-11-30 2023-03-21 Brunswick Corporation Systems for avoiding harmonic modes of gas burners
US11608983B2 (en) * 2020-12-02 2023-03-21 Brunswick Corporation Gas burner systems and methods for calibrating gas burner systems
WO2022234359A1 (fr) * 2021-05-05 2022-11-10 Ariston S.P.A. Procédé de régulation d'un brûleur à gaz prémélangé et dispositif de commande et de régulation pour la mise en oeuvre du procédé
US11940147B2 (en) 2022-06-09 2024-03-26 Brunswick Corporation Blown air heating system

Also Published As

Publication number Publication date
EP1207340B1 (fr) 2005-01-12
DE50105055D1 (de) 2005-02-17
EP1207340A3 (fr) 2002-07-31
ATE287065T1 (de) 2005-01-15

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