EP1176364B1 - Verbrennungseinrichtung und Verfahren zum Steuern einer Verbrennungseinrichtung. - Google Patents

Verbrennungseinrichtung und Verfahren zum Steuern einer Verbrennungseinrichtung. Download PDF

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Publication number
EP1176364B1
EP1176364B1 EP01202810A EP01202810A EP1176364B1 EP 1176364 B1 EP1176364 B1 EP 1176364B1 EP 01202810 A EP01202810 A EP 01202810A EP 01202810 A EP01202810 A EP 01202810A EP 1176364 B1 EP1176364 B1 EP 1176364B1
Authority
EP
European Patent Office
Prior art keywords
throttle
combustion
flow opening
ionisation
control device
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.)
Expired - Lifetime
Application number
EP01202810A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1176364A1 (de
Inventor
Klaas Ophoff
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.)
Nefit Buderus BV
Original Assignee
Nefit Buderus BV
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 Nefit Buderus BV filed Critical Nefit Buderus BV
Publication of EP1176364A1 publication Critical patent/EP1176364A1/de
Application granted granted Critical
Publication of EP1176364B1 publication Critical patent/EP1176364B1/de
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
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/027—Regulating fuel supply conjointly with air supply using mechanical 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
    • 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
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/06—Air or combustion gas valves or dampers at the air intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/16—Fuel valves variable flow or proportional valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/18—Groups of two or more valves

Definitions

  • the invention relates to a combustion device with a burner for burning a gas-air mixture, a gas supply, in which one or more gas valves and gas valve control means are accommodated for controlling the gas supply to the burner, and an air supply line, a control device for controlling the combustion process, and a with the control device coupled ionization measuring device, wherein in the gas supply line in series with the gas valve or the gas valves or in the air supply line a throttle device is arranged with an adjustable flow rate through the control device.
  • the invention also relates to a method for controlling a combustion device.
  • the composition of the gas varies regionally. Also, the gas composition may deviate from a standard or vary over time. This results in the problem that varies in a combustion device, the required gas-air ratio for optimal, cleanest possible combustion. This means that a combustion device must be adapted to the composition of the gas.
  • throttle or throttling device also means an injection nozzle.
  • the throttle affects the gas-air ratio of the gas-air mixture supplied to the burner.
  • a method for controlling a gas burner wherein an ionization signal of an ionization sensor is used to adapt the gas-air mixture to different gas qualities.
  • the ionization signal in the range of the maximum power of the burner namely in the range of 60% to 100% of the maximum power, used to adjust the gas-air ratio so that results in a fixed, predetermined value of the ionization signal.
  • the gas-air ratio is set as a function of the ratio determined in the area of the maximum power, for example proportionally.
  • a disadvantage of this method is that this scheme is sensitive to changes over time.
  • the ionization signal, and thus the selected setting of the gas-air ratio changes with time due to aging, due to the scattering of the position of the ionization sensor in the flame, for example, by cocking of the sensor, and / or contamination of the ionization sensor, as well due to variations in the power delivered by the burner.
  • Another disadvantage is that this method does not lend itself to controlling the burner when it burns at low power, because the signal provided by the ionization sensor does not well reflect the combustion process when the burner burns at low power. Since the control device is incapable of determining the optimum gas-air ratio for low power firing and instead requires a proportional adjustment, higher emission of harmful components may occur.
  • a disadvantage is that regularly harmful components can be ejected, since the burner burns each time when the controller passes through the setting process, during the determination of the peak value of the ionization temporarily at a non-optimal gas-air ratio.
  • this peak value of the ionization signal is very flat due to the gradual course and therefore can not be determined exactly.
  • the object of the invention is to provide a combustion device available that can be conveniently adapted to the conditions of use.
  • the combustion device characterized in that the control device is adapted to adjust the flow opening of the throttle device due to a change in the flow opening of the throttle device caused by the control device and a resulting change in an ionization signal generated by the Ionisationsmeßvorraum .
  • the universal applicability of the combustion device since it is optimally offset to different compositions of the gas.
  • Another advantage results from the logistical simplicity and consequently smaller inventories, since a single version of the incinerator can be used in all countries and regions.
  • a further advantage is that the combustion device is less prone to failure, since the burner is always set to be substantially optimal.
  • a further advantage is that an increased emission of polluting gases is avoided by an incorrect setting, since errors in the installation, such as by choosing a wrong Gaseinblasedüse be excluded. Another advantage is that this means less work for the installer, since no checks or adjustments by the installer are required.
  • control device is adapted to a first value of the ionization signal at a first setting the adjustable flow opening of the throttle device and measuring a second value of the ionization signal at a second differing from the first setting the flow opening of the throttle device and the flow opening of the throttle due to the relative change of the second measured value of the ionization signal from the first set the measured value of the ionization signal.
  • a measurement of the ionization in a flame by means of an ionization sensor is sensitive to contamination of the sensor and is dependent on the power supplied by the burner and other sources of error, such as aging or kinking of the sensor.
  • sources of error such as aging or kinking of the sensor.
  • control device is set up to compare the relative change of the second measured ionization signal compared to the first measured ionization signal with one or more previously determined values. That is, the relative change of the ionization signal is divided into ranges limited by these predetermined values. These ranges define groups of possible gas compositions, thereby providing the controller with one or more choices for setting the flow opening of the throttle device for each region. This offers the advantage of enabling easy control.
  • control device is adapted to adjust the flow opening of the throttle device substantially once at the first start-up of the combustion device, wherein the control device is preferably adapted to measure the ionization signal within a certain time after ignition of the flame Control device is preferably adapted to readjust the flow opening of the throttle device, if the value of the ionization signal does not coincide within a certain range with a previously measured value.
  • the combustion device preferably controls itself regularly and preferably adjusts itself, if it turns out in this control, that the measured ionization signal deviates too much from a previously measured value.
  • the throttling device may have a continuously variable flow opening
  • the throttling device consists of a finite number of throttles which can be switched on and off, wherein preferably one or more throttles which can be switched on and off have different areas of the flow opening and thus a different throttle value or at least two reactors which can be switched on and off have the same area of the flow opening and thus have the same throttle value. It is advantageous that the adjustable throttle device is thereby realized by switching on and off a number of throttles with the same or different flow opening in a simple manner.
  • the throttle is by means of a distributor with a gas supply means or air supply means connected, and is provided a switching means, the throttle by opening and closing a passage of the gas supply means or air supply means to the throttle on and off, wherein the switching means preferably includes a pneumatic piston or a solenoid valve.
  • the invention includes a method for controlling a combustion device for burning a gas-air mixture, characterized by measuring a first ionization signal at a first setting of a throttle device received in the gas supply or in the air supply line with an adjustable flow opening and measuring a second ionization signal at a second setting of the throttle device different from the first, and adjusting the flow opening of the throttle device due to the relative change of the second measured ionization signal from the first measured ionization signal.
  • An advantage is that the adjustment of the gas-air ratio is correct; since it is tuned to the local gas composition measured by the ionization signal.
  • a second advantage is the accuracy of the setting, as it does not depend on aging, contamination or positional tolerances of the ionisation.
  • Figure 1 shows a combustion device with a burner 1 and an ionization sensor 2, which measures the ionization in the flame and a compound indicated by a broken line Ionization signal of a control device 3 transmitted.
  • the burner is supplied via an air supply line with a controllable from the controller 3 ago and controllable fan 4 with air.
  • the air is then supplied to a mixing device 5, where the air is mixed with gas.
  • the gas to be burned is supplied via a gas supply line 6 with a Gasabsperrvorettidron 7 arranged therein.
  • This Gasabsperrvortechnisch 7 includes a safety valve 8, by means of which the control device 3 can shut off the gas supply, and a control valve 9, which is released by the control device 3 and controls in this example, the amount of gas supplied depending on the amount of air sucked by the fan 4.
  • a throttle device 15 is arranged with adjustable flow opening, which comprises in the present example, three parallel, non-adjustable throttles 10, 11 and 12 with different fürflußö réelles founded and consequently different throttle value.
  • the throttles 11 and 12 are switched on and off by means of corresponding, controlled by the control device 3 valves 13 and 14, respectively.
  • the valves 13 and 14 are to be opened in a known manner by the control device 3 electromagnetically and close in a known manner by spring force.
  • the adjustable throttle device 15 can be adjusted in the mixing device 5 of the air mixed gas quantity and thereby the gas-air ratio of the burner 1 supplied mixture.
  • the control device 3 sets the throttle device 15 to a first setting of the flow opening, in which the valve 13 is open and the valve 14 is closed.
  • the control device with the ionization sensor 2 performs a first measurement of the ionization signal.
  • the control device 3 performs a second measurement of the ionization signal at a second setting of the flow opening of the throttle device 15, wherein both valve 13 and valve 4 are opened by.
  • the controller 3 determines the relative change of the ionization signal between the first and second measurements. This relative change is compared by the control device 3 with two threshold values.
  • the control device 3 decides to switch on only throttle 10 by closing the valves 13 and 14 to the throttles 11 and 12. If the relative change between the first and the second threshold value, the control device 3 opens the valve 13 and closes valve 14, whereby the throttles 10 and 11 are connected in parallel. If the relative change in the ionization signal is above the second threshold value, the valves 13 and 14 are both opened, as a result of which the throttles 10, 11 and 12 are now connected in parallel. Now, the throttle device 15 is set so that the burner 1, a mixture with an appropriate, clean combustion enabling gas-air ratio is supplied. Finally, the control device performs a measurement of the ionization signal at the selected setting of the throttle device and stores this comparison value Inormal.
  • the controller 3 of the combustion device measures the ionization by means of the ionization sensor 2 after each subsequent firing of the burner 1 and compares the ionization signal with the ionization signal Inormal which, as already mentioned, is measured immediately after the throttle device 15 has been adjusted has been.
  • the control device carries out the above-described setting of the throttle device again. On the other hand, if the ionization signal already agrees with the previously measured signal Inormal within this tolerance, then the control device does not change the setting of the throttle device.
  • FIG. 2 shows another embodiment of the throttle device 15 with an adjustable flow opening.
  • separate throttles 10, 11, 12 are connected to a cylinder 20, in which a movable piston 21 is received.
  • a movable piston 21 By pushing in or pushing out the piston 21, one or more throttles 10, 11, 12 can be closed or opened.
  • the piston 21 can be pushed in or out in a known manner, for example pneumatically, by the control device 3.
  • the throttle device is not arranged in the gas supply line, but in an air supply passage, whereby the gas supply, but the air supply is adapted to readjust the gas-air ratio of the gas mixture supplied to the burner.
  • the flow opening of the throttling device may be adjusted so that the desired setting is stored in a table depending on the region and the control device is notified of the region during assembly or by the control device providing the desired setting or offered gas composition via an optional wireless network connection For example, an Internet connection or a wireless telephone connection is communicated.

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  • 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)
EP01202810A 2000-07-25 2001-07-23 Verbrennungseinrichtung und Verfahren zum Steuern einer Verbrennungseinrichtung. Expired - Lifetime EP1176364B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1015797A NL1015797C2 (nl) 2000-07-25 2000-07-25 Verbrandingsinrichting en werkwijze voor het besturen van een verbrandingsinrichting.
NL1015797 2000-07-25

Publications (2)

Publication Number Publication Date
EP1176364A1 EP1176364A1 (de) 2002-01-30
EP1176364B1 true EP1176364B1 (de) 2006-09-13

Family

ID=19771798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01202810A Expired - Lifetime EP1176364B1 (de) 2000-07-25 2001-07-23 Verbrennungseinrichtung und Verfahren zum Steuern einer Verbrennungseinrichtung.

Country Status (3)

Country Link
EP (1) EP1176364B1 (nl)
DE (1) DE50110987D1 (nl)
NL (1) NL1015797C2 (nl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012023606A1 (de) * 2012-12-04 2014-06-05 Robert Bosch Gmbh Verfahren zur Verbrennungsregelung bei einem Gas-oder Ölbrenner

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1024388C2 (nl) 2003-09-26 2005-03-31 Betronic Design B V Vlambewakingssysteem.
AT505442B1 (de) * 2007-07-13 2009-07-15 Vaillant Austria Gmbh Verfahren zur brenngas-luft-einstellung für einen brenngasbetriebenen brenner
ES2628903T3 (es) * 2011-09-16 2017-08-04 BSH Hausgeräte GmbH Unidad de válvula de gas
EP3228936B1 (en) * 2016-04-07 2020-06-03 Honeywell Technologies Sarl Method for operating a gas burner appliance

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3280774A (en) * 1965-02-12 1966-10-25 Robert M English Combustion apparatus and controlled draft inducer
DE3039994A1 (de) * 1980-10-23 1982-05-06 Karl Dungs Gmbh & Co, 7067 Urbach Verfahren zur einstellung von verbundreglern fuer brenner in waermeerzeugungsanlagen
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
AT400075B (de) * 1991-08-06 1995-09-25 Vaillant Gmbh Verfahren zum einstellen eines mit einem brenner versehenen gasheizgerätes durch vorgabe eines gasdurchsatzes und einrichtung zum einstellen dieses gasdurchsatzes
US5971745A (en) 1995-11-13 1999-10-26 Gas Research Institute Flame ionization control apparatus and method
DE69709928T2 (de) 1997-10-17 2002-08-29 Riello Spa Kombiniertes Regelsystem für Gas und Luft zur Verbrennungsregelung eines Gasheizkessels
DE19748570A1 (de) * 1997-11-04 1999-05-06 Miele & Cie Gasbeheiztes Gerät mit einer Einrichtung zur Regelung des Heizbetriebes
DE19824523C2 (de) 1998-06-02 2000-06-08 Honeywell Bv Regelungsverfahren für Gasbrenner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012023606A1 (de) * 2012-12-04 2014-06-05 Robert Bosch Gmbh Verfahren zur Verbrennungsregelung bei einem Gas-oder Ölbrenner
DE102012023606B4 (de) 2012-12-04 2019-02-21 Robert Bosch Gmbh Verfahren zur Verbrennungsregelung bei einem Gas-oder Ölbrenner

Also Published As

Publication number Publication date
NL1015797C2 (nl) 2002-01-28
DE50110987D1 (de) 2006-10-26
EP1176364A1 (de) 2002-01-30

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