EP0225655B1 - Verfahren zum Zünden eines Brenners - Google Patents

Verfahren zum Zünden eines Brenners Download PDF

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Publication number
EP0225655B1
EP0225655B1 EP86201933A EP86201933A EP0225655B1 EP 0225655 B1 EP0225655 B1 EP 0225655B1 EP 86201933 A EP86201933 A EP 86201933A EP 86201933 A EP86201933 A EP 86201933A EP 0225655 B1 EP0225655 B1 EP 0225655B1
Authority
EP
European Patent Office
Prior art keywords
air
burner
ignition
fuel
mixture
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
EP86201933A
Other languages
English (en)
French (fr)
Other versions
EP0225655A1 (de
Inventor
Paul Vloon
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 Fasto BV
Original Assignee
NEDERLANDSE INDUSTRIELE NEFIT B V Mij
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19846825&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0225655(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by NEDERLANDSE INDUSTRIELE NEFIT B V Mij filed Critical NEDERLANDSE INDUSTRIELE NEFIT B V Mij
Priority to AT86201933T priority Critical patent/ATE72482T1/de
Publication of EP0225655A1 publication Critical patent/EP0225655A1/de
Application granted granted Critical
Publication of EP0225655B1 publication Critical patent/EP0225655B1/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/12—Measuring temperature room 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
    • F23N2227/28—Ignition circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/36—Spark ignition, e.g. by means of a high voltage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • 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
    • 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
    • F23N2235/14—Fuel valves electromagnetically operated
    • 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

Definitions

  • the present invention relates to a method of igniting a burner in a burner assembly having also a fuel supply and a fan supplying combustion air to the burner, said fuel and air forming a mixture having an air/fuel ratio, as well as a controllable ignition device, where the fan and/or the fuel supply are energized to bring about a lower than normal air/fuel ratio at which the mixture is ignited by the ignition device and after ignition has been obtained the air/fuel ratio is raised to a normal operating value.
  • the burner fan motor initially generates an air flow rate lower than the normal air flow so that consequently when the ignition device is energized the air/fuel ratio is lower than normal. After ignition is obtained the air/fuel ratio is gradually increased to the normal operating value.
  • the invention aims to provide the method of the above mentioned kind which results into a sure and safe ignition of a gas burner.
  • the method according to the invention is characterized in that for igniting a gas burner assembly with a perforated burner plate the air/fuel ratio of the mixture supplied to the burner is gradually lowered from a value above the maximum value at which under the prevailing circumstances ignition occurs until ignition is obtained.
  • an air/fuel ratio of the mixture supplied to the burner which has a higher value than the one which ensures ignition.
  • Fig. 1 the process according to the invention is explained with reference to a burner 1 with complete premixing of combustion air.
  • the process according to the invention can, however, also be used with an atmospheric burner, where only the secondary combustion air is supplied by means of a fan.
  • the burner 1 comprises a mixing chamber 2, which is connected on one side to an air inlet 3 and a fuel inlet 4 for the infeed of an air-gas mixture.
  • the burner 1 is disposed inside a combustion chamber 5 of a boiler or heating appliance, in which combustion chamber is disposed a heat exchanger 6 for heating of a medium.
  • the mixing chamber 2 is shut off at the side facing away from the air and fuel inlet by a burner plate 7 which is situated in the combustion chamber 5 and is provided with openings through which the air-gas mixture flows into the combustion chamber.
  • an ignition element 8 Disposed some distance away from the burner plate inside the combustion chamber 5 is an ignition element 8 which is connected to a control device 9.
  • a detector for monitoring the combustion of the air-gas mixture there is also a detector for monitoring the combustion of the air-gas mixture, said detector also being connected to the control device 9.
  • the air inlet 3 is provided with a fan 11, which is connected to the control device 9, while the fuel inlet 4 is provided with a regulating valve 12, which is also connected to the control device 9. Finally, one or more room thermostats 13 are connected to the control device.
  • the control element 9 When the thermostats 13 call for heat, the control element 9 will start the fan and open the regulating valve 12, so that in the mixing chamber 2 of the burner 1 an air-gas mixture is formed and flows through the openings in the burner plate 7 into the combustion chamber 5.
  • the electronic ignition element 8 will be actuated by the control element 9 for ignition of the air-gas mixture. If the heating appliance is cold, the air fed in through the inlet 3 will meet with little resistance, so that the fan 11 has a greater output. This results in a high air factor, which makes the air-gas mixture difficult to ignite. As a result of the lower temperature of the air, the density of the air is greater, so that relatively more air is displaced by the fan, which further increases the above-mentioned effect of a high air factor.
  • the speed of the fan 11 is reduced and/or the fuel supply to the burner increased during the ignition phase, so that during the ignition the air factor is reduced, and the above-mentioned influences are removed, so that the mixture has the correct air-gas ratio which is ideal for the ignition.
  • the ignition of the mixture is monitored by the detector 10, which then gives off a signal to the control element 9, following which the air factor increases to the normal operating value of the burner.
  • the process according to the invention can also be used with an atmospheric burner where the secondary combustion air is supplied by means of a fan.
  • the secondary combustion air supplied by the fan makes ignition difficult through the "blowing away" of the air-gas mixture emerging through the burner plate.
  • the combustible mixture is converted by the inflowing secondary air into a narrow cloud, the correct position of which is difficult to determine beforehand. This means that there is a risk of the ignition element lying outside this cloud.
  • the high speeds and the eddies occurring also make ignition difficult.
  • a broad "cloud" of combustible air-gas mixture is produced near the burner plate, so that it is ensured that the ignition element lies within this cloud.
  • the means for reducing the air factor during the ignition phase can vary from those which are shown in the drawing.
  • the air inlet 3 can also have a variable resistance element, by means of which the quantity of infed air during the ignition phase can be reduced.
  • the fan could be shut off entirely during the ignition.
  • Fig. 2 is a graph showing the curve of the air factor, where the ignition area for a gas A and for a gas B are indicated. It can be seen from this figure that different gases can have different ideal ignition areas and it is possible by means of the process according to the invention to ignite the burner irrespective of the type of gas used.

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)

Claims (1)

  1. Verfahren zum Zünden eines Brenners in einer Brennervorrichtung mit einer Brennstoffversorgung und einem Ventilator zur Versorgung des Brenners mit Verbrennungsluft, wobei Brennstoff und Luft ein Gemisch in einem Luft/Brennstoff-Verhältnis bilden, und mit einer regelbaren Zündvorrichtung, wobei der Ventilator und/oder die Brennstoffversorgung veranlaßt werden, ein unterhalb des normalen Wertes liegendes Luft/Brennstoff-Verhältnis, zu liefern bei dem das Gemisch durch die Zündvorrichtung gezündet wird, und das Luft/Brennstoff-Verhältnis nach erfolgter Zündung auf einem normalen Betriebswert angehoben wird, dadurch gekennzeichnet, daß zur Zündung einer Gasbrennervorrichtung mit einer perforierten Brennerplatte das Luft/Brennstoff-Verhältnis des dem Brenner zugeführten Gemisches nach und nach von einem Wert oberhalb des Maximalwertes, bei dem unter den vorherrschenden Bedingungen die Zündung erfolgt, bis zum Eintritt der Zündung erniedrigt wird.
EP86201933A 1985-11-07 1986-11-05 Verfahren zum Zünden eines Brenners Expired - Lifetime EP0225655B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86201933T ATE72482T1 (de) 1985-11-07 1986-11-05 Verfahren zum zuenden eines brenners.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8503058A NL8503058A (nl) 1985-11-07 1985-11-07 Werkwijze voor het ontsteken van een brander, alsmede een brander voor het uitvoeren van deze werkwijze.
NL8503058 1985-11-07

Publications (2)

Publication Number Publication Date
EP0225655A1 EP0225655A1 (de) 1987-06-16
EP0225655B1 true EP0225655B1 (de) 1992-02-05

Family

ID=19846825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86201933A Expired - Lifetime EP0225655B1 (de) 1985-11-07 1986-11-05 Verfahren zum Zünden eines Brenners

Country Status (4)

Country Link
EP (1) EP0225655B1 (de)
AT (1) ATE72482T1 (de)
DE (1) DE3683834D1 (de)
NL (1) NL8503058A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11732890B2 (en) 2020-09-30 2023-08-22 Midea Group Co., Ltd. Cooking appliance gas oven burner control during oven warm-up operation
US11739933B2 (en) 2020-09-30 2023-08-29 Midea Group Co., Ltd. Oven broiler gas burner for cooking appliance with variable electromechanical valve

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4113983B4 (de) * 1991-04-29 2005-09-08 Alstom Verfahren zur Regelung eines Brenners während der Startphase in einer mit einer Rauchgaszirkulation betriebenen Feuerungsanlage
US5968320A (en) * 1997-02-07 1999-10-19 Stelco, Inc. Non-recovery coke oven gas combustion system
DE19737191A1 (de) * 1997-08-27 1998-07-30 Bosch Gmbh Robert Vorrichtung zum Betreiben einer Heizungsanlage
AT410387B (de) * 2001-03-28 2003-04-25 Vaillant Gmbh Verfahren zur inbetriebnahme eines heizgerätes
EP2116771B1 (de) * 2008-05-09 2011-08-17 Truma Gerätetechnik GmbH & Co. KG Luftzahloptimierter Start und Betrieb eines Brenners
EP2685168B1 (de) * 2012-07-13 2015-10-14 Honeywell Technologies Sarl Verfahren zum Betrieb eines Gasbrenners
EP2685167B1 (de) * 2012-07-13 2015-12-16 Honeywell Technologies Sarl Verfahren zum Betrieb eines Gasbrenners
JP2016012519A (ja) * 2014-06-30 2016-01-21 アイシン精機株式会社 燃料電池システム
DE102016123041B4 (de) 2016-11-29 2023-08-10 Webasto SE Brennstoffbetriebenes Fahrzeugheizgerät und Verfahren zum Betreiben eines brennstoffbetriebenen Fahrzeugheizgerätes
US11092335B2 (en) * 2018-01-23 2021-08-17 Rheem Manufacturing Company Ignition control systems for fuel-fired devices
DE102021207690A1 (de) * 2021-07-19 2023-01-19 Viessmann Climate Solutions Se Verfahren zum steuern eines brenners eines wärmeerzeugers, brenner, wärmeerzeuger und heizungsanlage
DE102021123229A1 (de) * 2021-09-08 2023-03-09 Vaillant Gmbh Verfahren und Anordnung zur Sicherstellung des Vorhandenseins von Flammen in einem Verbrennungsraum bei einer Modulation eines Heizgerätes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH476259A (de) * 1967-04-14 1969-07-31 Muff Franz Einrichtung mit einem Ölbrenner der Schalenbauart
FR2250960A1 (en) * 1973-11-13 1975-06-06 United Gas Industries Ltd Control system for a fuel burner - has a standby condition with reduced air supply to pilot flame
US3912162A (en) * 1973-12-07 1975-10-14 Robertshaw Controls Co Furnace blower speed control

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11732890B2 (en) 2020-09-30 2023-08-22 Midea Group Co., Ltd. Cooking appliance gas oven burner control during oven warm-up operation
US11739933B2 (en) 2020-09-30 2023-08-29 Midea Group Co., Ltd. Oven broiler gas burner for cooking appliance with variable electromechanical valve

Also Published As

Publication number Publication date
ATE72482T1 (de) 1992-02-15
EP0225655A1 (de) 1987-06-16
DE3683834D1 (de) 1992-03-19
NL8503058A (nl) 1987-06-01

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