EP2005066A1 - Verfahren zum starten einer feuerungseinrichtung bei unbekannten rahmenbedingungen - Google Patents
Verfahren zum starten einer feuerungseinrichtung bei unbekannten rahmenbedingungenInfo
- Publication number
- EP2005066A1 EP2005066A1 EP07703333A EP07703333A EP2005066A1 EP 2005066 A1 EP2005066 A1 EP 2005066A1 EP 07703333 A EP07703333 A EP 07703333A EP 07703333 A EP07703333 A EP 07703333A EP 2005066 A1 EP2005066 A1 EP 2005066A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- gas
- ignition
- firing device
- 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
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
- F23N2223/00—Signal processing; Details thereof
- F23N2223/48—Learning / Adaptive control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/54—Recording
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
- F23N2225/16—Measuring temperature burner temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/02—Starting or ignition cycles
-
- 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 starting a firing device, in particular a gas burner, under unknown conditions and in particular at first igniting, wherein for the firing device in a memory from a known empirical investigations characteristic of a starting air ratio depending on the burner temperature is stored.
- Gas heaters are used for the preparation of hot water in a boiler, for the provision of heating heat or similar.
- different requirements are placed on the device.
- the starting process of the device requires a quick ignition of the burner flame and a subsequent, adapted to the heat demand, power output. Due to the normally irregular use of the gas burner over the day and the night, the starting conditions for the gas burner are mostly unknown. Important parameters for these start conditions are above all the burner temperature, the type of gas, the gas pressure, the ambient pressure of the air and the humidity.
- the decisive factor for igniting the burner is the starting air ratio, which describes the ratio of the actual amount of air supplied to the burner to the amount of air theoretically required for optimal stoichiometric combustion. To an Op- Excess air operated, ie the setpoint for the air ratio for the hygienically optimal combustion during operation is about 1, 3. Burners ignite in different gas-air conditions depending on the conditions.
- the output of a gas burner depends on the regularly changing heat demand. Essentially, the power output is determined by the adjustment of the supply of air and fuel gas and by the set mixing ratio between air and gas.
- the mixing ratio can be specified, for example, as the ratio of the mass flows or the volume flows of the air and the gas.
- DE 100 45 270 C2 discloses a firing device and a method for controlling the firing device with fluctuating fuel quality.
- the fuel-air ratio is changed accordingly.
- the mixture composition is adjusted for each suitable type of fuel until the desired flame core temperature is reached.
- characteristic maps are used for various fuels, from which a new, suitable fuel-air ratio is read out whenever the performance requirements change. A method for starting the burner is not disclosed.
- GB 2 270 748 A shows a control system for a gas burner.
- the regulation takes place here using a temperature measured at the burner surface. Since the surface temperature depends on the flow rate of the air-gas mixture, falls below a certain temperature, the speed of the fan rotor is lowered, whereby the air flow and thus the air-gas ratio is lowered.
- the starting process of the burner and the associated procedural steps are not dealt with individually.
- a method for controlling a gas burner in which the CO concentration in the exhaust gases of the burner flame is detected by an exhaust gas sensor.
- a certain CO value corresponds to a certain gas-air ratio.
- gas-air ratio at a certain CO value a desired gas-air ratio can be set.
- the burner regulates the air-gas mixture according to a standard specification adapted to a certain type of gas.
- it does not take into account the fact that conditions are changing or that the startup procedure fails.
- EP 770 824 B1 shows a regulation of the gas-air ratio in the fuel-air mixture by measuring an ionization current which depends on the excess air in the exhaust gases of the burner flame. In stoichiometric combustion, a maximum of the ionization current is known to be measured. Depending on this value, the mixture composition can be optimized.
- the starting process is carried out by an automatic start, which generates by means of a setpoint generator, a start speed of the blower, in which an ignitable mixture is present. Also ignored is the case of a failed start attempt.
- a disadvantage of the last-mentioned methods is that, in order to execute them, it is assumed either that the burners have already been started, or that insufficient starting methods adapted to fixed framework conditions are used.
- a disclosure integrates in the description the starting process of a burner, solved with a start-up automatic, which uses only the blower as a controlled variable. This is not enough to consider different, unknown framework conditions and to react to non-ignition.
- the object of the present invention is to provide a method for starting a firing device under unknown conditions.
- This object is achieved in a generic method in that a calibration of the start-up process is carried out in several steps, wherein the necessary for ignition ratio of opening of the gas valve to air quantity is iteratively determined by varying the gas and / or air quantity, and in the case the ignition is started the firing device and the correct air ratio is stored.
- the calibration is carried out in the following steps:
- An automatic start as disclosed in the prior art, can not have these advantages, since it must be set exclusively to exactly specific conditions and can not respond to unknown conditions.
- Calibration is performed by a multi-step procedure.
- the supply of too lean a fuel-air mixture to the burner and the steady slow enrichment of the gas-air mixture by opening the gas valve brings the great advantage that it can come to any deflagration explosion of an accumulated, unburned gas-air mixture ,
- the calculations during the calibration process are easy and fast to execute.
- the air ratio and the target mass flow of the combustion air are calculated with the aid of a characteristic curve which can be interrogated in a memory, so that the burner can be transferred directly into the operating state.
- the storage of the calculated results has the advantage of a faster start-up in the future.
- an empirically determined characteristic curve of starting air numbers to known framework conditions is stored in a memory for the firing device for calculating the actual starting air ratio.
- different starting air numbers are pre-determined, which describe the stored characteristic curve.
- the actual starting air ratio can simply be calculated during the calibration procedure by measuring the burner temperature.
- Fig. 1 is a flowchart of the calibration process
- FIG. 2 shows a characteristic curve which is stored from empirical investigations for the firing device
- FIG. Fig. 3 is a graph with a corridor calculated during the calibration process.
- Figure 1 shows a flowchart illustrating the individual steps of the calibration process.
- Steps mapped to one another are executed one after the other, and steps shown next to one another are executed simultaneously. Each step corresponds to a rectangular box.
- gas is mixed with a constant amount of air.
- the initially resulting fuel-air mixture is deliberately too lean, i. the proportion of gas is too low to be ignited. In this way, an initial situation is ensured, in which there can be no unexpected ignition, which could give rise to an explosion hazard.
- the fuel-air mixture flowing to the burner is greased, i. the ratio of the amount of gas supplied to the amount of air supplied increases.
- the ignition system continuously attempts to ignite it with the continuously gas-containing mixture.
- the mixture ignites and the gas burner is started. Exactly at this time of ignition, the burner temperature is measured. Using this measured temperature and the stored in the memory characteristic of the relationship between the starting air ratio and the burner temperature, the actual air ratio is calculated at the time of ignition.
- the desired mass flow of the air quantity to be supplied is calculated from this air ratio. Then, with a known constant opening of the gas valve, the amount of air supplied can be converted from a measured actual value to a calculated one Setpoint value can be changed so that the setpoint air ratio is reached.
- the setpoint air ratio is based on the setpoint characteristic which describes the desired ratio of air volume to gas volume or m L actual ch / m L mm for different heat / power requirements
- Target characteristic a corridor is generated that is at least as large / wide that the calculated start air number within this corridor holds the characteristic and the corridor generated are stored in the memory, so that future starts, according to the different heat / power demands , be carried out according to this corridor
- the previously unknown for the gas burner framework conditions have been converted by the Kalib ⁇ réellesvorgang for the following launches in known conditions
- the control of a desired air ratio of the calculated starting air ratio can be done by changing the supplied air flow at a constant held Gasoong
- Burner temperature is a crucial parameter in terms of the starting air ratio needed to start. From several preliminary tests carried out in advance, a characteristic curve can be developed which determines a starting air ratio as a function of the burner temperature and which is stored in a memory of the firing device. To determine this characteristic, a fuel-air mixture which is too lean is slowly enriched in continuous ignition tests until ignition occurs. The air ratio at the moment of ignition is recorded. By repeating this process at different burner temperatures results from the individual results of the sought characteristic. By storing in a memory, the characteristic curve can be accessed at any time.
- FIG. 3 shows a detailed sketch of the characteristic curve generated by the calibration process and the corridor determined for this purpose (shown in dashed lines).
- the decisive influencing factors for the mixture formation are the supplied gas quantity m G and air quantity m L.
- the amount of gas m G is dependent on the opening (w) of the gas valve.
- the characteristic curve lies in the diagram shown, depending on the framework slightly shifted towards the top or bottom. In the upper part of the fuel-air mixture is fatter, leaner at the bottom.
- the corridor is determined around the characteristic curve, which specifies the limits for operation and a safe range for the air ratio for the following starting procedures.
- the upper limit limits the combustibility of the fuel-air mixture to the rich, the lower limit to the lean range.
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006006964A DE102006006964B4 (de) | 2006-02-14 | 2006-02-14 | Verfahren zum Starten einer Feuerungseinrichtung bei unbekannten Rahmenbedingungen |
PCT/EP2007/001050 WO2007093312A1 (de) | 2006-02-14 | 2007-02-07 | Verfahren zum starten einer feuerungseinrichtung bei unbekannten rahmenbedingungen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2005066A1 true EP2005066A1 (de) | 2008-12-24 |
EP2005066B1 EP2005066B1 (de) | 2014-08-27 |
Family
ID=38002007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07703333.0A Not-in-force EP2005066B1 (de) | 2006-02-14 | 2007-02-07 | Verfahren zum starten einer feuerungseinrichtung bei unbekannten rahmenbedingungen |
Country Status (5)
Country | Link |
---|---|
US (1) | US8721325B2 (de) |
EP (1) | EP2005066B1 (de) |
CA (1) | CA2641352A1 (de) |
DE (1) | DE102006006964B4 (de) |
WO (1) | WO2007093312A1 (de) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2116771B1 (de) * | 2008-05-09 | 2011-08-17 | Truma Gerätetechnik GmbH & Co. KG | Luftzahloptimierter Start und Betrieb eines Brenners |
US8167610B2 (en) * | 2009-06-03 | 2012-05-01 | Nordyne, LLC | Premix furnace and methods of mixing air and fuel and improving combustion stability |
DE102011111453A1 (de) * | 2011-08-30 | 2013-02-28 | Robert Bosch Gmbh | Verfahren zur Luftzahleinstellung bei einem Heizgerät |
US9846440B2 (en) | 2011-12-15 | 2017-12-19 | Honeywell International Inc. | Valve controller configured to estimate fuel comsumption |
US9835265B2 (en) | 2011-12-15 | 2017-12-05 | Honeywell International Inc. | Valve with actuator diagnostics |
US8905063B2 (en) | 2011-12-15 | 2014-12-09 | Honeywell International Inc. | Gas valve with fuel rate monitor |
US9074770B2 (en) | 2011-12-15 | 2015-07-07 | Honeywell International Inc. | Gas valve with electronic valve proving system |
US8839815B2 (en) | 2011-12-15 | 2014-09-23 | Honeywell International Inc. | Gas valve with electronic cycle counter |
US8899264B2 (en) | 2011-12-15 | 2014-12-02 | Honeywell International Inc. | Gas valve with electronic proof of closure system |
US9851103B2 (en) | 2011-12-15 | 2017-12-26 | Honeywell International Inc. | Gas valve with overpressure diagnostics |
US9995486B2 (en) | 2011-12-15 | 2018-06-12 | Honeywell International Inc. | Gas valve with high/low gas pressure detection |
US8947242B2 (en) | 2011-12-15 | 2015-02-03 | Honeywell International Inc. | Gas valve with valve leakage test |
US9557059B2 (en) | 2011-12-15 | 2017-01-31 | Honeywell International Inc | Gas valve with communication link |
US10422531B2 (en) | 2012-09-15 | 2019-09-24 | Honeywell International Inc. | System and approach for controlling a combustion chamber |
US9234661B2 (en) | 2012-09-15 | 2016-01-12 | Honeywell International Inc. | Burner control system |
WO2014140687A1 (en) * | 2013-03-11 | 2014-09-18 | Idea S.P.A. | Burner combustion control method and device |
ITPD20130186A1 (it) * | 2013-07-02 | 2015-01-03 | Sit La Precisa S P A Con Socio Uni Co | Metodo di controllo del funzionamento di un bruciatore |
EP2868970B1 (de) | 2013-10-29 | 2020-04-22 | Honeywell Technologies Sarl | Regelungsvorrichtung |
US10024439B2 (en) | 2013-12-16 | 2018-07-17 | Honeywell International Inc. | Valve over-travel mechanism |
US9841122B2 (en) | 2014-09-09 | 2017-12-12 | Honeywell International Inc. | Gas valve with electronic valve proving system |
US9645584B2 (en) | 2014-09-17 | 2017-05-09 | Honeywell International Inc. | Gas valve with electronic health monitoring |
DE102014224891A1 (de) * | 2014-12-04 | 2016-06-09 | Robert Bosch Gmbh | Heizgerätevorrichtung und Verfahren zum Betrieb einer Heizgerätevorrichtung |
DE102015221154A1 (de) * | 2015-10-29 | 2017-05-04 | Robert Bosch Gmbh | Heizgerätevorrichtung und Verfahren zum Betrieb einer Heizgerätevorrichtung |
ITUB20159682A1 (it) * | 2015-12-23 | 2017-06-23 | Idea S P A | Metodo e dispositivo di controllo della combustione di un bruciatore |
US10503181B2 (en) | 2016-01-13 | 2019-12-10 | Honeywell International Inc. | Pressure regulator |
US10564062B2 (en) | 2016-10-19 | 2020-02-18 | Honeywell International Inc. | Human-machine interface for gas valve |
US11073281B2 (en) | 2017-12-29 | 2021-07-27 | Honeywell International Inc. | Closed-loop programming and control of a combustion appliance |
US10697815B2 (en) | 2018-06-09 | 2020-06-30 | Honeywell International Inc. | System and methods for mitigating condensation in a sensor module |
US11739933B2 (en) | 2020-09-30 | 2023-08-29 | Midea Group Co., Ltd. | Oven broiler gas burner for cooking appliance with variable electromechanical valve |
US11732890B2 (en) | 2020-09-30 | 2023-08-22 | Midea Group Co., Ltd. | Cooking appliance gas oven burner control during oven warm-up operation |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2270748B (en) * | 1992-09-17 | 1995-12-06 | Caradon Heating Ltd | Burner control system |
WO1996025626A1 (en) * | 1995-02-16 | 1996-08-22 | British Gas Plc | Apparatus for providing an air/fuel mixture to a fully premixed burner |
ATE202837T1 (de) * | 1996-05-09 | 2001-07-15 | Stiebel Eltron Gmbh & Co Kg | Verfahren zum betrieb eines gasbrenners |
DE10057234C2 (de) * | 2000-11-18 | 2003-04-10 | Buderus Heiztechnik Gmbh | Verfahren zur Regelung eines Gasbrenners für ein Heizgerät |
DE50105055D1 (de) * | 2000-11-18 | 2005-02-17 | Bbt Thermotechnik Gmbh | Verfahren zur Regelung eines Gasbrenners |
DE10057225C2 (de) * | 2000-11-18 | 2003-04-17 | Buderus Heiztechnik Gmbh | Verfahren zum Betrieb eines Gasbrenners für ein Heizgerät |
DE10200128B4 (de) * | 2002-01-04 | 2005-12-29 | Fa.Josef Reichenbruch | Verfahren zur Erkennung von Gasarten und Verfahren zum Betrieb einer Brennvorrichtung sowie Brennvorrichtung für die Durchführung dieser Verfahren |
ATE534871T1 (de) * | 2003-10-08 | 2011-12-15 | Vaillant Gmbh | Verfahren zur regelung eines gasbrenners, insbesondere bei heizungsanlagen mit gebläse |
DE102004055716C5 (de) * | 2004-06-23 | 2010-02-11 | Ebm-Papst Landshut Gmbh | Verfahren zur Regelung einer Feuerungseinrichtung und Feuerungseinrichtung (Elektronischer Verbund I) |
DE202004017851U1 (de) * | 2004-06-23 | 2005-07-21 | Ebm-Papst Landshut Gmbh | Feuerungseinrichtung |
-
2006
- 2006-02-14 DE DE102006006964A patent/DE102006006964B4/de not_active Expired - Fee Related
-
2007
- 2007-02-07 US US12/224,021 patent/US8721325B2/en not_active Expired - Fee Related
- 2007-02-07 EP EP07703333.0A patent/EP2005066B1/de not_active Not-in-force
- 2007-02-07 WO PCT/EP2007/001050 patent/WO2007093312A1/de active Application Filing
- 2007-02-07 CA CA002641352A patent/CA2641352A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2007093312A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102006006964A1 (de) | 2007-08-23 |
EP2005066B1 (de) | 2014-08-27 |
CA2641352A1 (en) | 2007-08-23 |
US20090148798A1 (en) | 2009-06-11 |
DE102006006964B4 (de) | 2012-09-06 |
US8721325B2 (en) | 2014-05-13 |
WO2007093312A1 (de) | 2007-08-23 |
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