EP0833106A2 - Procédé et dispositif d'optimisation du fonctionnement d'un brûleur à gaz - Google Patents

Procédé et dispositif d'optimisation du fonctionnement d'un brûleur à gaz Download PDF

Info

Publication number
EP0833106A2
EP0833106A2 EP97116689A EP97116689A EP0833106A2 EP 0833106 A2 EP0833106 A2 EP 0833106A2 EP 97116689 A EP97116689 A EP 97116689A EP 97116689 A EP97116689 A EP 97116689A EP 0833106 A2 EP0833106 A2 EP 0833106A2
Authority
EP
European Patent Office
Prior art keywords
gas
air
burner
flame
excess
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
EP97116689A
Other languages
German (de)
English (en)
Other versions
EP0833106B1 (fr
EP0833106A3 (fr
Inventor
Enno Vrolijk
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.)
Garrett Motion SARL
Original Assignee
Honeywell 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 Honeywell BV filed Critical Honeywell BV
Publication of EP0833106A2 publication Critical patent/EP0833106A2/fr
Publication of EP0833106A3 publication Critical patent/EP0833106A3/fr
Application granted granted Critical
Publication of EP0833106B1 publication Critical patent/EP0833106B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
    • F23N5/006—Systems for controlling combustion using detectors sensitive to combustion gas properties the detector being sensitive to oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2221/00—Pretreatment or prehandling
    • F23N2221/10—Analysing fuel properties, e.g. density, calorific
    • 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

Definitions

  • An additional oxygen sensor has therefore been provided in the flue gas outlet, which, depending on the oxygen content of the flue gases, changes the gas / air mixture ratio via a regulator that acts on the gas or air supply in the direction of optimal combustion with a small excess of air of, for example, 4%.
  • Such an additional oxygen or NO x sensor increases the costs of the control device and, since it is arranged in the flue gas outlet, is subject to considerable contamination. It must therefore be regularly serviced and cleaned or replaced.
  • DE-39 37 290 A1 describes a method for controlling the one to be fed to a burner Gas / air mixture, the electrical conductivity of the flame region, i.e. the size the ionization current of a flame rod immersed in the flame as a parameter for the Mixture composition serves.
  • the conductivity of the flame area is measured and compared with an empirically determined target value.
  • the deviation of the actual value from The setpoint provides a signal that changes the mixture composition, for example to the Blower motor, which changes the mixture composition until the flame rod reports that the setpoint for conductivity in the flame area has been reached. In this way can be constant even with varying gas quality and changing air conditions Combustion quality can be achieved.
  • DE 44 33 425 A1 and DE 195 02 901 A1 the ionization current of a flame sensor for mixture control.
  • a burner is known from DE-22 52 618 A1, in which the position of the flame in is visually monitored with respect to the burner plate, including a flame to glow brought platinum wire and a photo element. Strikes the flame on the burner back, the platinum wire located near the burner plate is heated and that Radiation of the platinum wire is applied to the photoelement. This turns into the speed of the fan increasing signal derived. On the other hand, the flame travels from the burner gone, the platinum wire is no longer heated and the photo element receives from it no more radiation. The resulting signal lowers the fan speed.
  • CH 389 539 describes a safety device on gas burners with a thermoelectric sensor, if the gas / air mixture is properly composed just touched the perimeter of the blue core of the flame. The changes Composition, the sensor protrudes into a cooler part of the flame, causing the sensor cool down and the gas valve closes.
  • the invention proposes a simple method for calibrating the mixture controller of a gas burner and for operating such a gas burner, and a device suitable for carrying out this method, which do not require an additional oxygen or NO x sensor in the flue gas outlet and nevertheless achieve an at least approximately optimal combustion even when using different types of gas with a different Wobbe number.
  • the method and the device according to the invention are in the independent Characterized claims. Advantageous configurations result from the Subclaims.
  • the invention uses the anyway to monitor the burner flame existing flame sensor additionally in the course of a calibration of the burner system, the optimal gas / air ratio depending on the type of gas determine.
  • the invention takes advantage of the fact that on the one hand with sufficient Excess gas ignites the flame with certainty and on the other hand the flame in dependence the size and position of the burner in relation to the amount of air changed. At high Air content increases the outflow speed of the gas / air mixture from the burner than the rate of combustion. This causes the flame to rise from the burner.
  • the flame sensor in such a way that it detaches the flame from the Burner can determine, this lifting of the flame can be evaluated that it as a sign of an excessively high proportion of air, i.e. for a non-optimal gas / air ratio is exploited.
  • the flame sensor in normal operation when the flame goes out it delivers a signal to stop the burner during the calibration despite the burning Flame will also give off a signal indicating the absence of a flame, if removed the flame from the flame sensor.
  • you could go for the two processes also use separate flame sensors. It may be one in the flame immersed thermal flame sensor, e.g. a flame rod or one act optical flame sensor, which is sufficiently focused to raise the flame to be able to recognize.
  • the gas / air mixture supplied to burner 2 contains too much air, which increases the flame.
  • the flame sensor 3 no longer protrudes into the Area of the flame tips, but into the middle flame area, the opposite the tip of the flame has a lower temperature. Nevertheless, the recognizes Flame sensor 3 the presence of the flames 1.
  • the gas / air mixture has a very high excess of air.
  • the flames 1 are still present, but so far from the burner 2 that the Flame rod 3 is no longer immersed in the flame 1 itself.
  • the flame sensor 3 can do not recognize the presence of the flames 1, but reports to a connected one Monitoring circuit a flame failure, although the flames 1 in reality available.
  • This lifting of the flames 1 from the burner 2 is according to the invention used to calibrate the gas / air ratio when the burner contains gases different Wobbe index should burn optimally.
  • a test copy of the burner is operated with an optimal gas / air mixture and at the same time measured the oxygen content in the exhaust gas.
  • the purpose of this measurement is that Actually optimally adjust gas / air mixture.
  • the operating mode is A.
  • increase the excess air until finally the flames 1 according to operating mode C. as far as are lifted from the burner 2 that the flame sensor 3 the presence of the No longer detects flames, but reports a flame failure.
  • the burner When installing a burner and then at regular intervals, for example once or twice a day, the burner is calibrated as follows: The burner is started with sufficient gas excess so that it ignites in any case and the flames are created. The excess gas depends on the gas with the lowest calorific calorific value, which may have to be burned in the plant in question. The setting of the corresponding control elements for gas and air supply is known. After the flame has been ignited, the gas / air ratio is changed in the direction of excess air by appropriate adjustment of the actuators determining the gas / air ratio, for example by means of a gas / air controller. As soon as the excess air has reached a value at which the flames 1 lift off the flame rod 3, the flame sensor 3 switches off the burner.
  • the calibration process can be repeated automatically. Each the more often such a calibration is carried out, the lower the risk that the Burner between two calibrations with a non-optimal gas / air ratio is operated.
  • the invention is for both burners with a switching and with a modulating gas valve.
  • Gas is the combustion chamber or the burner 2 from a Gas line G forth supplied via such an on / off gas valve 4 and a gas injector 5.
  • a blower 6 generates a stream of combustion air, which is passed through an air nozzle 7 Burner 2 arrives.
  • the blower 6 could with one operated by the desired gas / air ratio predetermined speed.
  • the invention provides an adaptation of this speed to the gas type in question to set an optimal gas / air mixture by means of the calibration mentioned.
  • the system started with a low speed of the blower 6, so that with certainty Burner ignites and the flame sensor 3 reports the presence of flames.
  • the controller 8 increases the speed of the fan 6 until as a result of the increased Excess air, the flames are lifted from the flame sensor in accordance with operating mode C. have and this consequently delivers a flame failure signal to the controller 8.
  • the preferred controller 8 equipped with a microprocessor and memory does not switch over here individual shown but known signal connections from the system and saves at the same time the speed value given when the flames go out.
  • the controller then reduces 8 is the target value of the fan speed by the above-mentioned predetermined percentage, that from the shutdown operating point according to operating mode C, the excess air on the optimal mode of operation A is reduced.
  • the system is optimized with this Gas / air ratio or excess air released for operation.
  • the controller 8 puts the system into operation by the Gas valve 4 opened and the blower 6 at the now optimized speed is operated until there is no longer any need for heat.
  • Such a calibration process can be preceded by every activation. For plants, which switch on and off more often is usually sufficient if the calibration is done once or done twice a day.
  • the Wobbe index of the supplied gas changes frequently Security not.
  • the calibration process can also be carried out without interrupting burner operation be when the controller 8 when switching on the system and when the Flame failure signal due to the flame lifting off the burner the fan speed reduced by the specified percentage without reducing the gas supply and thus the Interrupt the burning process.
  • FIG 3 shows in simplified form a burner system with modulating operation, i.e. Gas and Air supply changes depending on the respective heat requirement.
  • the fuel gas G arrives again via an injector 5 and the combustion air L via an air nozzle 7 to the burner 2.
  • a modulating gas valve 14 and the speed-controlled blower 6 are from one Gas / air controller 15 in the sense of maintaining a predetermined optimal gas / air ratio controlled. Examples of this are from EP 0 390 964 B1 (72400679) or EP 0 644 377 A1 (72200796) is known. Is between the gas valve 14 and the gas injector 5 a gas throttle 16 is switched on, which is controlled by the controller 8.
  • the speed of the fan 6 is dependent on the heat requirement changed.
  • the gas supply through the gas valve 14 in Controlled to maintain a given gas / air ratio.
  • Such a Gas / air regulator 15 has a predetermined modulation range over which it is automatic Adjustment of gas and air supply is effective.
  • the gas injector 5 is designed so that it with throttle 16 fully open and using a gas with the lowest too expected heat content achieved the desired gas / air ratio.
  • the system is started with throttle 16 fully open. As soon as the flame ignites The controller 8 slowly changes the flow cross section of the throttle 16. When the flame from the flame sensor 3, the controller 8 switches, as in the above embodiment, the Plant from. When you switch on again, the flow cross section of the throttle 16 is around predefined percentage between withdrawal value (operating mode C) and optimal operation (Operating mode A) increased, for example using a servomotor, which at constant Speed is in operation for a predetermined duration corresponding to the percentage mentioned.
  • the throttle 16 can thus be part of the modulating gas valve 14.
  • the setting the gas / air ratio during calibration can not only in the gas flow path, but instead be carried out in the flow path of the air L when one appropriate adjustment device between the fan 6 and air nozzle 7 provides.
  • this is less cheap, because in this case the use of different gas types Heat output of the burner would change.
  • a thermal flame sensor e.g. a flame rod 3 can also be a sufficiently focused optical or other Flame sensor are used, which not only the presence of the flame 1 but also detects their lifting from the burner 2.
  • the combustion air supply can also be through a throttle valve arranged in the air flow can be regulated.
  • the one used for calibration Regulator 8 and a combined gas / air regulator 15 can be made into a single regulator sum up.

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)
EP97116689A 1996-09-26 1997-09-25 Procédé et dispositif d'optimisation du fonctionnement d'un brûleur à gaz Expired - Lifetime EP0833106B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19639487A DE19639487A1 (de) 1996-09-26 1996-09-26 Verfahren und Vorrichtung zur Betriebsoptimierung eines Gasbrenners
DE19639487 1996-09-26

Publications (3)

Publication Number Publication Date
EP0833106A2 true EP0833106A2 (fr) 1998-04-01
EP0833106A3 EP0833106A3 (fr) 1999-08-04
EP0833106B1 EP0833106B1 (fr) 2001-11-14

Family

ID=7806909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97116689A Expired - Lifetime EP0833106B1 (fr) 1996-09-26 1997-09-25 Procédé et dispositif d'optimisation du fonctionnement d'un brûleur à gaz

Country Status (2)

Country Link
EP (1) EP0833106B1 (fr)
DE (2) DE19639487A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1331444A2 (fr) 2002-01-17 2003-07-30 Vaillant GmbH Méthode de régulation d'un brûleur à gaz
EP1113224A3 (fr) * 1999-12-31 2003-09-17 Robert Bosch Gmbh Brûleur à gaz
EP1331445A3 (fr) * 2002-01-25 2004-06-16 Martin Gabriel Brûleur à combustible liquide
EP1522790A2 (fr) 2003-10-08 2005-04-13 Vaillant GmbH Procédé de régulation d'un brûleur à gaz, en particulier dans des installations de chauffe avec ventilateur
EP2405198A1 (fr) * 2010-07-08 2012-01-11 Vaillant GmbH Procédé de calibration de régulation du rapport gaz combustible-air d'un brûleur à gaz combustible
DE102019131310A1 (de) * 2019-11-20 2021-05-20 Vaillant Gmbh Heizgerät mit Notbetriebsregelung

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19857239C2 (de) * 1998-12-11 2000-11-23 Honeywell Bv Regelverfahren für Gasbrenner
DE10030063C2 (de) * 2000-06-19 2003-03-20 Honeywell Bv Regelungsverfahren für Gasbrenner
DE10145592C1 (de) 2001-09-14 2003-06-18 Rational Ag Verfahren zur Leistungseinstellung gasbetriebener Gargeräte sowie dieses Verfahren nutzendes Gargerät
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
DE10300602B4 (de) * 2002-01-17 2012-01-05 Vaillant Gmbh Verfahren zur Regelung eines Gasbrenners
DE102004051270A1 (de) * 2004-10-21 2006-04-27 G. Kromschröder AG Verfahren und Einrichtung zur Kalibrierung eines Heizwertgerätes
AT505442B1 (de) 2007-07-13 2009-07-15 Vaillant Austria Gmbh Verfahren zur brenngas-luft-einstellung für einen brenngasbetriebenen brenner
EP2631541B1 (fr) 2012-02-27 2018-04-11 Honeywell Technologies Sarl Procédé de fonctionnement d'un brûleur à gaz
EP2667097B1 (fr) 2012-05-24 2018-03-07 Honeywell Technologies Sarl Procédé de fonctionnement d'un brûleur à gaz
DE102012108268A1 (de) 2012-09-05 2014-03-06 Ebm-Papst Landshut Gmbh Verfahren zur Erkennung der Gasfamilie sowie Gasbrennvorrichtung
EP3073195B1 (fr) 2015-03-23 2019-05-08 Honeywell Technologies Sarl Procédé de calibration d'un brûleur à gaz
US11105512B2 (en) 2018-03-30 2021-08-31 Midea Group Co., Ltd Method and system for controlling a flow curve of an electromechanical gas valve
US11262069B2 (en) 2020-06-25 2022-03-01 Midea Group Co., Ltd. Method and system for auto-adjusting an active range of a gas cooking appliance

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH389539A (de) 1960-01-12 1965-03-31 Willem Grootenhuys Henri Sicherheitsvorrichtung an Gasbrenner
DE2252618A1 (de) 1972-02-03 1973-08-16 Mitsubishi Electric Corp Brenner
DE3937290A1 (de) 1988-11-10 1990-05-17 Vaillant Joh Gmbh & Co Verfahren und einrichtung zur herstellung eines einer verbrennung zuzufuehrenden brennstoff-verbrennungsluft-gemisches
DE4112449A1 (de) 1990-04-17 1991-10-24 Vaillant Joh Gmbh & Co Verfahren zur regelung eines flaechenbrenners
EP0390964B1 (fr) 1989-04-07 1993-09-29 Honeywell B.V. Dispositif de commande pour brûleur à gaz
EP0644377A1 (fr) 1993-09-16 1995-03-22 Honeywell B.V. Dispositif de commande pour brûleur à gaz
DE4433425A1 (de) 1994-09-20 1996-03-21 Stiebel Eltron Gmbh & Co Kg Regeleinrichtung zum Einstellen eines Gas-Verbrennungsluft-Gemisches bei einem Gasbrenner
DE19502901C1 (de) 1995-01-31 1996-03-21 Stiebel Eltron Gmbh & Co Kg Regeleinrichtung für einen Gasbrenner

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3132213B2 (ja) * 1993-01-13 2001-02-05 松下電器産業株式会社 燃焼装置
EP0615095B1 (fr) * 1993-03-11 1997-05-07 Landis & Gyr Technology Innovation AG Commande de brûleur

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH389539A (de) 1960-01-12 1965-03-31 Willem Grootenhuys Henri Sicherheitsvorrichtung an Gasbrenner
DE2252618A1 (de) 1972-02-03 1973-08-16 Mitsubishi Electric Corp Brenner
DE3937290A1 (de) 1988-11-10 1990-05-17 Vaillant Joh Gmbh & Co Verfahren und einrichtung zur herstellung eines einer verbrennung zuzufuehrenden brennstoff-verbrennungsluft-gemisches
EP0390964B1 (fr) 1989-04-07 1993-09-29 Honeywell B.V. Dispositif de commande pour brûleur à gaz
DE4112449A1 (de) 1990-04-17 1991-10-24 Vaillant Joh Gmbh & Co Verfahren zur regelung eines flaechenbrenners
EP0644377A1 (fr) 1993-09-16 1995-03-22 Honeywell B.V. Dispositif de commande pour brûleur à gaz
DE4433425A1 (de) 1994-09-20 1996-03-21 Stiebel Eltron Gmbh & Co Kg Regeleinrichtung zum Einstellen eines Gas-Verbrennungsluft-Gemisches bei einem Gasbrenner
DE19502901C1 (de) 1995-01-31 1996-03-21 Stiebel Eltron Gmbh & Co Kg Regeleinrichtung für einen Gasbrenner

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1113224A3 (fr) * 1999-12-31 2003-09-17 Robert Bosch Gmbh Brûleur à gaz
EP1331444A2 (fr) 2002-01-17 2003-07-30 Vaillant GmbH Méthode de régulation d'un brûleur à gaz
AT411189B (de) * 2002-01-17 2003-10-27 Vaillant Gmbh Verfahren zur regelung eines gasbrenners
EP1331444A3 (fr) * 2002-01-17 2003-11-12 Vaillant GmbH Méthode de régulation d'un brûleur à gaz
EP1331445A3 (fr) * 2002-01-25 2004-06-16 Martin Gabriel Brûleur à combustible liquide
EP1522790A2 (fr) 2003-10-08 2005-04-13 Vaillant GmbH Procédé de régulation d'un brûleur à gaz, en particulier dans des installations de chauffe avec ventilateur
EP2405198A1 (fr) * 2010-07-08 2012-01-11 Vaillant GmbH Procédé de calibration de régulation du rapport gaz combustible-air d'un brûleur à gaz combustible
DE102019131310A1 (de) * 2019-11-20 2021-05-20 Vaillant Gmbh Heizgerät mit Notbetriebsregelung

Also Published As

Publication number Publication date
EP0833106B1 (fr) 2001-11-14
EP0833106A3 (fr) 1999-08-04
DE19639487A1 (de) 1998-04-09
DE59705366D1 (de) 2001-12-20

Similar Documents

Publication Publication Date Title
EP0833106B1 (fr) Procédé et dispositif d'optimisation du fonctionnement d'un brûleur à gaz
EP1902254B1 (fr) Methode de controle d'un dispositif de combustion et dispositif de combustion
DE69910381T2 (de) Ofen für feste brennstoffe
EP1761728B1 (fr) Procede de reglage du coefficient d'air dans un appareil de combustion et appareil de combustion
DE3888327T2 (de) Brennstoffbrennereinrichtung und ein Kontrollverfahren.
EP2005066B1 (fr) Procédé pour mettre en marche un système de chauffage dans des conditions générales inconnues
DE4121924C2 (de) Verfahren und Vorrichtung zur Optimierung des Brennstoff-Luftverhältnisses in der Brenngaszuführung eines Strahlungsbrenners
DE3937290A1 (de) Verfahren und einrichtung zur herstellung eines einer verbrennung zuzufuehrenden brennstoff-verbrennungsluft-gemisches
EP1522790B1 (fr) Procédé de régulation d'un brûleur à gaz, en particulier dans des installations de chauffe avec ventilateur
EP3690318B1 (fr) Procédé de régulation d'un mélange air-gaz de combustion dans un appareil de chauffage
EP1331444B1 (fr) Méthode de régulation d'un brûleur à gaz
DE19539568C1 (de) Verfahren und Schaltung zur Regelung eines Gasbrenners
DE69910126T2 (de) Verbrennunungsverfahren eines Brennstoffes mit einem sauerstoffreichen Oxidationsmittel
DE102019119186A1 (de) Verfahren und Vorrichtung zur Regelung eines Brenngas-Luft-Gemisches in einem Heizgerät
EP0331918A2 (fr) Méthode pour actionner un dispositif de chauffage et dispositif de chauffage
EP4043793A1 (fr) Procédé et agencement de détection d'un retour de flamme dans un brûleur à prémelange
DE19734574B4 (de) Verfahren und Vorrichtung zum Regeln eines Brenners, insbesondere eines vollvormischenden Gasbrenners
EP1293728B1 (fr) Procédé pour commander la puissance d'un appareil de cuisson à gaz et appareil de cuisson utilisant ce procédé
DE29612014U1 (de) Gasbrenner
DE102004055715C5 (de) Verfahren zur Einstellung von Betriebsparametern an einer Feuerungseinrichtung und Feuerungseinrichtung
DE10045272A1 (de) Feuerungseinrichtung mit Überwachung der Flammenlänge
DE102004063992B4 (de) Verfahren zur Steuerung einer Feuerungseinrichtung und Feuerungseinrichtung
DE202004017851U1 (de) Feuerungseinrichtung
DE102004030299A1 (de) Verfahren zur Regelung und Steuerung einer Feuerungseinrichtung und Feuerungseinrichtung
EP0643265A1 (fr) Procédé et dispositif de commande de brûleurs à gaz avec prémélange et excès d'air

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT NL

AX Request for extension of the european patent

Free format text: AL;LT;LV;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;RO;SI

17P Request for examination filed

Effective date: 19990719

AKX Designation fees paid

Free format text: DE FR GB IT NL

17Q First examination report despatched

Effective date: 20000711

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT NL

REF Corresponds to:

Ref document number: 59705366

Country of ref document: DE

Date of ref document: 20011220

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20020115

NLR4 Nl: receipt of corrected translation in the netherlands language at the initiative of the proprietor of the patent
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

NLS Nl: assignments of ep-patents

Owner name: HONEYWELL TECHNOLOGIES SARL

Effective date: 20080618

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20120829

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20120910

Year of fee payment: 16

Ref country code: IT

Payment date: 20120924

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120928

Year of fee payment: 16

Ref country code: NL

Payment date: 20120913

Year of fee payment: 16

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20140401

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20130925

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140530

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59705366

Country of ref document: DE

Effective date: 20140401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130925

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140401

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130925

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140401

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130930