EP1002997A2 - Verfahren zur Luftzahlregelung eines vollvormischenden Gasbrenners - Google Patents
Verfahren zur Luftzahlregelung eines vollvormischenden Gasbrenners Download PDFInfo
- Publication number
- EP1002997A2 EP1002997A2 EP99122611A EP99122611A EP1002997A2 EP 1002997 A2 EP1002997 A2 EP 1002997A2 EP 99122611 A EP99122611 A EP 99122611A EP 99122611 A EP99122611 A EP 99122611A EP 1002997 A2 EP1002997 A2 EP 1002997A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- ionization
- air ratio
- current
- gas burner
- 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
Links
- 238000000034 method Methods 0.000 title claims description 18
- 239000000446 fuel Substances 0.000 title 1
- 238000005259 measurement Methods 0.000 claims description 12
- 239000007789 gas Substances 0.000 description 36
- 238000010586 diagram Methods 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 6
- 239000002737 fuel gas Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000009795 derivation Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Images
Classifications
-
- 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
- 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
- F23N2225/00—Measuring
- F23N2225/26—Measuring humidity
- F23N2225/30—Measuring humidity measuring lambda
-
- 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
- F23N3/00—Regulating air supply or draught
- F23N3/08—Regulating air supply or draught by power-assisted systems
- F23N3/082—Regulating air supply or draught by power-assisted systems using electronic means
Definitions
- the invention relates to a method for controlling the air ratio one with a fan and with a gas control valve provided at least partially premixing, preferably fully premixing Gas burner, with ionization signals in the flame area measured with the help of an ionization electrode the fan speed is recorded from the current Ionization signal representative of the current air ratio first signal derived and this with a predetermined Setpoint is compared, the fan speed at the derivation of the first signal and / or the selection the target value is taken into account and from the comparison a control signal for the gas control valve is derived.
- the air ratio control of gas burners is becoming increasingly important in practice. With the help of the air ratio control it is possible to operate gas burners in the optimal working range, in which the pollutant emissions, in particular the CO and NO X emissions, are low, the thermal load on the gas burner is very even and both the combustion behavior and the efficiency of the gas burner are optimal. It has been found that the optimal working range for an air ratio is between 1.15 and 1.3. An air ratio control can also reduce the susceptibility of the gas burner to malfunctions and ensure safe and quiet operation of the burner.
- Air ratio control instead of a one-time air number setting, there is one Air ratio control required because the composition of the fuel gas supplied by the supply network fluctuate greatly can.
- the gas quality fluctuates accordingly, especially the Wobbe index of the fuel gas. If the gas quality of the fuel gas changes, it takes effect the air ratio control and changes the gas supply with the help of the gas control valve such that the gas burner continues works at the desired air ratio.
- the air ratio can be adjusted using the various measured variables can be determined. However, it has proven, the air ratio over that with the help of an ionization electrode to determine the detected ionization signal (cf. DE 196 27 857 C2).
- the ionization electrode provides one stable, easy to maintain and at the same time inexpensive Air number sensor, which is also extremely low Effort can be installed, provided that it is not already available Flame monitoring is already in place. Also allowed the ionization signal is a very reliable and accurate determination the air ratio.
- the fan speed Since the fan speed is known, it can be derived from the ionization signal then the current air ratio is determined and with a characteristic of the respective fan speed Characteristic curve can be regulated.
- a signal representative of the current air ratio be in a certain performance range essentially independent of the burner output is. This has the advantage that the air ratio over this performance range can be regulated with a single characteristic can.
- the object of the invention is therefore in the aforementioned Procedure for checking the operating status of the To allow gas burner.
- This object is achieved in that a second signal representative of the current power is detected and compared with a predetermined value , from which comparison information about the Operating state of the gas burner can be derived.
- the invention is based on the knowledge that if Changes to the supply air or exhaust air system of the gas burner occur, the burner output set via the fan speed no longer corresponds to the actual burner output. In this case, the missing correlation between Fan speed and burner output recorded and be compensated for that another for current performance representative signal is detected. Does that make way for them current performance representative second signal from that for from the set performance, the Gas burner does not have the desired performance.
- the deviation is one a predetermined maintenance threshold to be activated.
- a particularly large deviation also engage a shutdown mechanism that the gas burner automatically switches off.
- the fan speed be varied until the current one Performance representative second signal the specified value corresponds.
- the gas burner then taking into account the changed correlation between Fan speed and burner output continue to operate become. This way a gas burner can last for a long time Period operated safely and with the desired performance become.
- a further development of the invention is characterized in that that for comparison with the second signal first signal is used as a predetermined value.
- Power consumption is advantageously used as the second signal of the fan or the temperature level of the Boiler or the air mass flow through the fan is detected.
- a particularly preferred alternative embodiment is characterized in that the second signal is off a current ionization signal is derived, the second signal for both the current power and for the current air ratio is representative.
- This embodiment is based on the knowledge that the ionization signal even used to check current performance can be. Since the ionization signal depends on the power is the current operating performance according to customer needs checked in a very wide performance range become. If the derived from the ionization signal for the current air ratio and the current performance representative second signal from that for this air ratio and the gas burner produces this value not the desired performance. It can then do the necessary Steps are initiated.
- a further development of the invention is characterized in that that also as the first signal for both the current Performance as well as representative for the current air ratio Signal is used, the first and the second Signal a different dependency on the air ratio and / or the performance.
- the ionization signals themselves first and / or second signal can be used.
- the method according to the invention is particularly simple by realizing that the current ionization signal, from which the first signal is derived with the help a first supply voltage is measured, and the current one Ionization signal from which the second signal is derived is measured using a second supply voltage.
- the ionization signals are thereby advantageously measured that an AC voltage, preferably of 230V, is applied to the ionization electrode.
- the polarity effect the flame causes only one half-wave at a time an ionization current flows. This allows a direct component of the tapped voltage, the ionization signal deduce.
- An ionization signal measured in this way can be evaluated particularly reliably and precisely.
- the signal is usually used for evaluation first applied to a low pass filter.
- the ionization signals can be measured in this way be that a delta voltage or a square wave voltage is applied to the ionization electrode.
- the ionization signal to determine the representative of the current air ratio Signal using an AC voltage and the ionization signal to determine the current Air ratio and representative of the current performance Signal using a triangular voltage or a square wave voltage be measured or vice versa.
- the ionization signals are preferably alternated to derive the first signal and to derive the second Signals used.
- the gas burner can operate in the long term in the optimal operating range be kept that the second signal in regular Intervals, e.g. B. once per minute becomes.
- the Start of operation of the gas burner Reference measurements carried out be where reference signals for different powers and recorded different air numbers and these as a predetermined Value saved for comparison with the second signal become. If the second signal from a current Ionization signal is derived at the start of operation of the gas burner preferably reference measurements performed where reference ionization signals for different Fan speeds and various air numbers recorded and this as a given value for comparison with the second value.
- Fig. 1 shows a diagram in which the voltage of a Measurement signal is plotted against the air ratio ⁇ .
- There are six different measurement signal curves are shown. With those with Signal-designated measurement signal curves are the signals representative of the current air ratio. This were measured from an AC voltage of 230V Ionization signal and the fan speed using a special evaluation circuit derived. The signals are shown for different services. As can be seen, the curves are almost completely on top of each other, i. H. this Signals are actually independent of performance.
- the measurement signal curves labeled Signal2 are concerned it is for the current air ratio and the current Performance representative signals.
- the voltage differences between the measurement signal curves are at a given air ratio in the lower Performance range particularly large.
- a very large one Power range of the gas burner reliably monitored be that the air ratio control in normal operation with With the help of the superimposed signal characteristics and to check the performance the AC voltage of 230V applied to the ionization electrode and the special one Evaluation circuit is bypassed.
- FIG. 2 shows two diagrams in which the ionization signal is plotted against the fan speed for a second exemplary embodiment of the invention.
- the measured values shown were recorded at a constant air ratio ⁇ of 1.3.
- the ionization signals are shown with a supply voltage of 50V and 230V for the ionization electrode.
- the upper diagram illustrates the normal operating status of the boiler.
- the set gas supply results in a speed of 2000min. -1 an ionization signal at a supply voltage of 50V of 109. This is the setpoint for regulating the air ratio of 1.3.
- the supply voltage of the ionization electrode is switched to the control voltage of 230V at regular intervals.
- the ionization signal is only approximately 102.
- the difference between the two signals is therefore approximately 7.
- the difference between these two determined ionization signal values is in the range of 7, the operation of the gas burner is in the optimal working range secured.
- the ionization signal by applying a Voltage of any shape to the ionization electrode be recorded.
- the ionization signal can be used in the same way a DC voltage can be measured.
- For sampling the ionization signal from the ionization electrode can be used to discharge representative of the current air ratio Signal and des for the current air ratio and the current Performance of representative signals of the same sensor be used.
- two sensors can be used be assigned to the ionization electrode or in Flame area of the gas burner even two separate ionization electrodes to be ordered. After all, they can Reference measurements instead of before starting operation be carried out by the manufacturer.
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)
Abstract
Description
Claims (14)
- Verfahren zur Luftzahlregelung eines mit einem Lüfter und einem Gas-Regelventil versehenen wenigstens teilvormischenden Gasbrenners, wobeiim Flammenbereich Ionisationssignale mit Hilfe einer Ionisations-Elektrode gemessen werden,die Lüfterdrehzahl erfaßt wird,aus dem aktuellen Ionisationssignal ein für die aktuelle Luftzahl repräsentatives erstes Signal abgeleitet und dieses mit einem Sollwert verglichen wird, wobei die Lüfterdrehzahl bei der Ableitung des ersten Signals und/oder bei der Auswahl des Sollwertes berücksichtigt wird, undaus dem Vergleich ein Stellsignal für das Gas-Regelventil abgeleitet wird,
dadurch gekennzeichnet, daßein für die aktuelle Leistung repräsentatives zweites Signal erfaßt wird und dieses mit einem vorgegebenen Wert verglichen wird,
wobei aus diesem Vergleich Informationen über den Betriebszustand des Gasbrenners abgeleitet werden. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß für den Vergleich mit dem zweiten Signal das erste Signal als vorgegebener Wert verwendet wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß als zweites Signal die Leistungsaufnahme des Lüfters oder das Temperaturniveau des Kessels oder der Luftmassenstrom durch den Lüfter erfaßt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das zweite Signal aus einem aktuellen Ionisationssignal abgeleitet wird, wobei das zweite Signal sowohl für die aktuelle Leistung als auch für die aktuelle Luftzahl repräsentativ ist.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß auch als erstes Signal ein sowohl für die aktuelle Leistung als auch für die aktuelle Luftzahl repräsentatives Signal verwendet wird, wobei das erste und das zweite Signal eine unterschiedliche Abhängigkeit von der Luftzahl und/oder der Leistung aufweisen.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Ionisationssignale selbst als erstes und/oder zweites Signal verwendet werden.
- Verfahren nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß das aktuelle Ionisationssignal, aus welchem das erste Signal abgeleitet wird, mit Hilfe einer ersten Speisespannung gemessen wird, und das aktuelle Ionisationssignal, aus welchem das zweite Signal abgeleitet wird, mit Hilfe einer zweiten Speisespannung gemessen wird.
- Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Ionisationssignale dadurch gemessen werden, daß eine Wechselspannung an die Ionisations-Elektrode angelegt wird.
- Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Ionisationssignale dadurch gemessen werden, daß eine Dreieckspannung oder eine Rechteckspannung an die Ionisations-Elektrode angelegt wird.
- Verfahren nach einem der Ansprüche 4 bis 9, dadurch gekennzeichnet, daß die Ionisationssignale abwechselnd zur Ableitung des ersten Signales und zur Ableitung des zweiten Signals genutzt werden.
- Verfahren nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß das zweite Signal in regelmäßigen Zeitabständen, z. B. einmal pro Minute, erfaßt wird.
- Verfahren nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß bei dem Betriebsstart des Gasbrenners Referenzmessungen durchgeführt werden, bei denen Referenzsignale für verschiedene Leistungen erfaßt und diese als vorgegebener Wert für den Vergleich mit dem zweiten Signal gespeichert werden.
- Verfahren nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß bei dem Betriebsstart des Gasbrenners Referenzmessungen durchgeführt werden, bei denen Referenz-Ionisationssignale für verschiedene Lüfterdrehzahlen und verschiedene Luftzahlen erfaßt und diese als vorgegebener Wert für den Vergleich mit dem zweiten Signal gespeichert gespeichert werden.
- Verfahren nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß der Gasbrenner abgeschaltet oder neu kalibriert oder eine Störung angezeigt wird, wenn die Abweichung des zweiten Signals von dem vorgegebenen Wert größer als ein vorgegebener Schwellwert ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853567 | 1998-11-20 | ||
| DE19853567A DE19853567A1 (de) | 1998-11-20 | 1998-11-20 | Verfahren zur Luftzahlregelung eines vollvormischenden Gasbrenners |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1002997A2 true EP1002997A2 (de) | 2000-05-24 |
| EP1002997A3 EP1002997A3 (de) | 2003-01-15 |
| EP1002997B1 EP1002997B1 (de) | 2004-04-28 |
Family
ID=7888448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99122611A Expired - Lifetime EP1002997B1 (de) | 1998-11-20 | 1999-11-11 | Verfahren zur Luftzahlregelung eines vollvormischenden Gasbrenners |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1002997B1 (de) |
| AT (1) | ATE265655T1 (de) |
| DE (2) | DE19853567A1 (de) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002077528A1 (de) * | 2001-03-23 | 2002-10-03 | Gvp Gesellschaft Zur Vermarktung Der Porenbrennertechnik Mbh | Verfahren und vorrichtung zur einstellung der luftzahl |
| WO2006000366A1 (de) * | 2004-06-23 | 2006-01-05 | Ebm-Papst Landshut Gmbh | Verfahren zur regelung und steuerung einer feuerungseinrichtung und feuerungseinrichtung |
| DE102010004826A1 (de) | 2010-01-15 | 2011-07-21 | Honeywell Technologies S.A.R.L. | Verfahren zum Betreiben eines Gasbrenners |
| EP3182007A1 (de) * | 2015-12-18 | 2017-06-21 | Robert Bosch Gmbh | Heizgerätesystem und verfahren mit einem heizgerätesystem |
| EP3260783A1 (de) * | 2016-06-24 | 2017-12-27 | Robert Bosch GmbH | Verfahren zum ermitteln von betriebsdaten einer gasheizvorrichtung, gasheizvorrichtung und computerprogrammprodukt |
| DE102013207720B4 (de) | 2013-04-26 | 2019-10-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Überwachung von Verbrennungsanlagen |
| EP3869099A1 (de) * | 2020-02-18 | 2021-08-25 | Vaillant GmbH | Verfahren, vorrichtung und computerprogrammprodukt zur regelung eines brenngas-luft-gemisches in einem heizgerät bei variabler leistung |
| IT202100032360A1 (it) | 2021-12-23 | 2023-06-23 | Sit Spa | Metodo e apparato per il monitoraggio e controllo della combustione in apparecchi bruciatori a gas combustibile |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT412902B (de) * | 2003-09-23 | 2005-08-25 | Vaillant Gmbh | Verfahren zur anpassung der geräteheizleistung eines gebläseunterstützten heizgerätes |
| DE102009057121A1 (de) * | 2009-12-08 | 2011-06-09 | Scheer Heizsysteme & Produktionstechnik Gmbh | Verfahren zur qualitativen Überwachung und Regelung des Verbrennungszustandes eines Heizkesselsystems mittels eines Ionisationsflammenwächters |
| DE102010008908B4 (de) * | 2010-02-23 | 2018-12-20 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Brenners und zum Luftzahl-geregelten Modulieren einer Brennerleistung |
| DE102011102575A1 (de) | 2011-05-26 | 2012-11-29 | Robert Bosch Gmbh | Verfahren zum Kalibrieren und Betreiben eines Brenners |
| DE102012023606B4 (de) * | 2012-12-04 | 2019-02-21 | Robert Bosch Gmbh | Verfahren zur Verbrennungsregelung bei einem Gas-oder Ölbrenner |
| DE102019100467A1 (de) | 2019-01-10 | 2020-07-16 | Vaillant Gmbh | Verfahren zum Regeln des Verbrennungsluftverhältnisses am Brenner eines Heizgerätes |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2638819A1 (fr) * | 1988-11-10 | 1990-05-11 | Vaillant Sarl | Procede et un dispositif pour la preparation d'un melange combustible-air destine a une combustion |
| DE59604283D1 (de) * | 1995-10-25 | 2000-03-02 | Stiebel Eltron Gmbh & Co Kg | Verfahren und Schaltung zur Regelung eines Gasbrenners |
| DE19627857C2 (de) * | 1996-07-11 | 1998-07-09 | Stiebel Eltron Gmbh & Co Kg | Verfahren zum Betrieb eines Gasgebläsebrenners |
| DE29612014U1 (de) * | 1996-07-10 | 1996-09-05 | Buderus Heiztechnik Gmbh, 35576 Wetzlar | Gasbrenner |
-
1998
- 1998-11-20 DE DE19853567A patent/DE19853567A1/de not_active Withdrawn
-
1999
- 1999-11-11 DE DE59909316T patent/DE59909316D1/de not_active Expired - Lifetime
- 1999-11-11 EP EP99122611A patent/EP1002997B1/de not_active Expired - Lifetime
- 1999-11-11 AT AT99122611T patent/ATE265655T1/de active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7223094B2 (en) | 2001-03-23 | 2007-05-29 | Emb-Papst Landshut Gmbh | Blower for combustion air |
| US6939127B2 (en) | 2001-03-23 | 2005-09-06 | Gvp Gesellschaft Zur Vermarktung Der Porenbrennertechnik Mbh | Method and device for adjusting air ratio |
| WO2002077528A1 (de) * | 2001-03-23 | 2002-10-03 | Gvp Gesellschaft Zur Vermarktung Der Porenbrennertechnik Mbh | Verfahren und vorrichtung zur einstellung der luftzahl |
| US8500441B2 (en) | 2004-06-23 | 2013-08-06 | Ebm-Papst Landshut Gmbh | Method for regulating and controlling a firing device and a firing device |
| WO2006000366A1 (de) * | 2004-06-23 | 2006-01-05 | Ebm-Papst Landshut Gmbh | Verfahren zur regelung und steuerung einer feuerungseinrichtung und feuerungseinrichtung |
| US8636501B2 (en) | 2004-06-23 | 2014-01-28 | Landshut GmbH | Method for regulating and controlling a firing device and firing device |
| DE102010004826A1 (de) | 2010-01-15 | 2011-07-21 | Honeywell Technologies S.A.R.L. | Verfahren zum Betreiben eines Gasbrenners |
| EP2354657A2 (de) | 2010-01-15 | 2011-08-10 | Honeywell Technologies Sarl | Verfahren zum Betreiben eines Gasbrenners |
| DE102013207720B4 (de) | 2013-04-26 | 2019-10-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Überwachung von Verbrennungsanlagen |
| EP3182007A1 (de) * | 2015-12-18 | 2017-06-21 | Robert Bosch Gmbh | Heizgerätesystem und verfahren mit einem heizgerätesystem |
| EP3260783A1 (de) * | 2016-06-24 | 2017-12-27 | Robert Bosch GmbH | Verfahren zum ermitteln von betriebsdaten einer gasheizvorrichtung, gasheizvorrichtung und computerprogrammprodukt |
| EP3869099A1 (de) * | 2020-02-18 | 2021-08-25 | Vaillant GmbH | Verfahren, vorrichtung und computerprogrammprodukt zur regelung eines brenngas-luft-gemisches in einem heizgerät bei variabler leistung |
| CN113339841A (zh) * | 2020-02-18 | 2021-09-03 | 威能有限公司 | 用于在功率可变的情况下调节加热装置中的燃气-空气混合物的方法和装置 |
| IT202100032360A1 (it) | 2021-12-23 | 2023-06-23 | Sit Spa | Metodo e apparato per il monitoraggio e controllo della combustione in apparecchi bruciatori a gas combustibile |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19853567A1 (de) | 2000-05-25 |
| ATE265655T1 (de) | 2004-05-15 |
| EP1002997A3 (de) | 2003-01-15 |
| EP1002997B1 (de) | 2004-04-28 |
| DE59909316D1 (de) | 2004-06-03 |
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