EP0275439B1 - Dispositif de régulation de puissance de générateurs de chaleur à carburant - Google Patents

Dispositif de régulation de puissance de générateurs de chaleur à carburant Download PDF

Info

Publication number
EP0275439B1
EP0275439B1 EP87117963A EP87117963A EP0275439B1 EP 0275439 B1 EP0275439 B1 EP 0275439B1 EP 87117963 A EP87117963 A EP 87117963A EP 87117963 A EP87117963 A EP 87117963A EP 0275439 B1 EP0275439 B1 EP 0275439B1
Authority
EP
European Patent Office
Prior art keywords
fuel
pipe
air
burner
main
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
EP87117963A
Other languages
German (de)
English (en)
Other versions
EP0275439A1 (fr
Inventor
Alfred Sinner
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.)
Karl Dungs GmbH and Co KG
Original Assignee
Karl Dungs GmbH and Co KG
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 Karl Dungs GmbH and Co KG filed Critical Karl Dungs GmbH and Co KG
Priority to AT87117963T priority Critical patent/ATE73533T1/de
Publication of EP0275439A1 publication Critical patent/EP0275439A1/fr
Application granted granted Critical
Publication of EP0275439B1 publication Critical patent/EP0275439B1/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
    • F23N1/025—Regulating fuel supply conjointly with air supply using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • 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
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/10—Air or combustion gas valves or dampers power assisted, e.g. using electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2237/00—Controlling
    • F23N2237/20—Controlling one or more bypass conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel

Definitions

  • the invention relates to a device for regulating the output of fuel-fired, in particular gas-fired, heat generators, having a burner, a main line connecting the burner with an air inlet opening, a flow sensor arranged in the main line, and a fuel line opening into the main line in the region between the flow sensor and the burner which is supplied to the main line with a predetermined, constant amount of fuel, one in operative connection with the main line standing blower determining the air flow rate in the main line and a control device controlling the delivery capacity of the blower as a function of the output signal of the flow sensor and possibly further variables influencing the optimal fuel / air ratio.
  • a heat generator working with gas as fuel with such a device is described in a prospectus no. 1.23.202320 of the applicant.
  • Such a heat generator can be optimally set for a given heating output by firmly specifying the amount of fuel required to achieve this heating output and supplying the air required for optimal combustion in a controlled manner.
  • the air supply is regulated with the aid of the blower, the output of which is controlled in such a way that the air speed determined by the flow sensor is kept at a predetermined value, which is determined by the control device as a function of variables influencing the amount of air supplied, in particular as a function of the air temperature. can be changed.
  • the known device has the advantage that it does not require complicated control loops in order to change the amount of fuel supplied when the heating power changes and to provide the optimum amount of air for the respective amount of fuel. Rather, if a reduced heating capacity is required, it is sufficient to periodically switch the burner control on and off, as is generally the case in central heating systems. With such burner controls, the nominal output is normally set to the maximum heating requirement of the central heating system. For central heating of single-family houses, flats u. The like. The heat requirement is not very high, especially since heat-insulating measures are increasingly being used which greatly reduce the heat requirement. On the other hand, the automatic firing systems of such central heating systems are also used to heat water.
  • the burner's air throughput is adapted to the gas throughput in the case of a burner's power which can be changed in stages, by virtue of the fact that the fuel valve is divided into parallel individual valves and the air closure member is divided into parallel sub-members with a discharge stage of 2 n , the fuel is led directly to the burner.
  • the invention has for its object to develop a device of the type mentioned so that it can be adjusted to different heating capacities depending on the respective heat requirements, without losing the optimal setting of the combustion conditions and without complicated control devices to maintain these optimal conditions required are.
  • the section of the main line containing the flow sensor and the outlet of the fuel line is connected in parallel to at least one secondary line connecting the burner with an air inlet opening, into which another fuel line opens, via which the secondary line has a predetermined time constant amount of fuel is supplied, which is in a ratio to the amount of fuel supplied to the main line, which is the same as the ratio of the amounts of air conveyed through the main line and the secondary line, and that the secondary line and the further fuel line assigned to it are optionally connectable and lockable.
  • the device according to the invention makes it possible to change the heating power by switching one or more secondary lines on or off without any changes to the setting of the control device being necessary. If, for example, a secondary line is switched on for the current blower output, the amount of air conveyed by the blower is distributed over the main line and secondary line, so that the flow velocity in the main line drops. The one arranged in the main line responds to this drop in the flow velocity Flow sensor on, which causes an increase in the delivery rate of the blower via the control device until the air in the main line again has the predetermined flow rate regardless of the flow conditions changed by the increased heating power.
  • a preferred embodiment of the invention provides that the adjustment speed of in the secondary line and in the further fuel line Arranged shut-off devices is adapted to the rate of change of the blower power, so that the fuel / air ratio remains essentially undisturbed even during the transition from one power level to the other.
  • the invention also offers the possibility of continuously regulating the heating power by continuously changing the throughput of the secondary line and, corresponding to the further fuel line. It must of course be ensured that the amount of fuel supplied to the secondary line is in the same ratio to the amount of fuel supplied to the main line as the released cross section of the secondary line to the cross section of the main line, so that the same fuel / air ratio prevails in the secondary line Main line.
  • the fan is arranged in a flue gas line connected to the heat generator, because then the fan cannot directly influence the flow conditions in the main line.
  • a fan arranged at the inlet end of the lines could in fact influence the distribution of the air flow in the main line and thus at the location of the flow sensor and thus lead to control errors.
  • the invention is described and explained in more detail below with reference to the embodiment shown in the drawing.
  • the features to be extracted from the description and the drawing can be used in other embodiments of the Invention can be used individually or in any combination.
  • the drawing shows a schematic representation of a heat generator with a device for power control designed according to the invention.
  • the heat generator shown in the drawing has a burner 1, to which a gas / air mixture is supplied via a main line 2.
  • the burner 1 is located within a boiler housing 3, which also encloses the heat exchanger 4 of a heating system.
  • the boiler housing 3 is provided with a vent 5 for the flue gases, in which there is a fan 7 driven by a motor 6.
  • the main line 2 connects the burner 1 to an air inlet opening 8.
  • a temperature sensor 9 and a flow sensor 10 also protrude into the main line 2.
  • the output signals of these sensors 9, 10 are fed to a control device 11.
  • a fuel line 13 opens into the main line 2 and supplies gas to the main line as fuel.
  • a gas pressure regulator 14 and a valve 15 are located one behind the other in the fuel line 13 in the direction of flow of the gas, so that the main line 2 is supplied with a predetermined amount of gas.
  • the specified amount of gas includes a precisely determined amount of air.
  • the supply of the correct amount of air is monitored by the flow sensor 10, the output signal of which is characteristic of the flow velocity of the air in the main line 2.
  • the amount of air determined in this way is still dependent on various influencing variables, in particular on the temperature, which is determined by the temperature sensor 9.
  • the control device 11 controls as a function of the output signals of the temperature sensor 9 and the flow sensor 10, the speed of the motor 6 used to drive the fan 7 in such a way that the flow rate required to supply the correct amount of air prevails in the main line 2. This ensures in a very simple manner that optimal combustion conditions are present for the gas supplied to the burner 1.
  • a secondary line 21 is connected in parallel with the main line 2 and opens into the main line 2 in the area between the confluence of the fuel line 13 and the burner 1. Similar to the main line 2, the secondary line 21 also has an open end serving as an air inlet opening 22. In practice, however, both lines will mostly be connected to a common supply air line. Similar to the main line 2, a fuel line 23 also opens into the secondary line 21 and branches off from the fuel line 13 opening into the main line 2. A shut-off valve 24 is located in this fuel line 23. A shut-off valve 25 is also located in the secondary line 21. The shut-off valves 24 and 25 are connected to a common servomotor 26 which, if necessary, connects the common servomotor 26, which, if necessary, opens or opens the valve jointly Closing the shut-off valves 24, 25 causes.
  • the secondary line 21 has no influence as long as the shut-off valves 24, 25 are closed. If the valves 24, 25 are opened, the air conveyed by the blower 7 is distributed over the main line 2 and the secondary line 21 in the ratio of the cross sections of these lines, since these cross sections determine the flow resistance. Accordingly, the flow rate decreases Air in the main line 2, to which the flow sensor 10 responds.
  • the signal supplied to the control device 11 by the flow sensor 10 therefore causes the control device to increase the speed of the motor 6 and thus the power of the fan 7 until the predetermined flow rate again prevails in the main line.
  • the increase in performance of the blower will have to be considerably greater than it corresponds to the additional delivery rate, because the throughput resistance of the heat generator increases with increasing heating output.
  • an unfavorable operating state can arise because, after opening the shut-off valves 24, 25, the fuel supply is suddenly increased by opening the fuel line 23, but the engine needs a certain amount of time until it achieves its increased output has reached, so that initially the amount of combustion air supplied is too small. Conversely, when the secondary line is switched off, the amount of fuel would suddenly be reduced without immediately reducing the amount of air accordingly, so that a large excess of air would then be used. In both cases, the flames could go out, causing the burner to malfunction in the usual way.
  • the invention is not limited to the exemplary embodiment shown, but deviations from it are possible without leaving the scope of the invention. It is therefore possible to provide not only one, but also two and more secondary lines, which can be switched on and off in any number in order to set different power levels of the heat generator. In all cases, the monitoring of the flow velocity of the air in the main line 2 is sufficient to maintain optimal combustion conditions, since exactly the same fuel / air ratio is established in all open parallel lines as in the main line.

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)
  • Fuel Cell (AREA)

Claims (5)

  1. Dispositif de réglage de puissance d'appareils de production de chaleur alimentés en combustible, en particulier alimentés en gaz, comportant un brûleur (1), une conduite principale (2) raccordant le brûleur (1) à un orifice d'entrée d'air (8), un détecteur d'écoulement (10) agencé dans la conduite principale (2), une conduite de combustible (13) qui débouche dans la conduite principale (2), dans la zone entre le détecteur d'écoulement (10) et le brûleur (1), et par laquelle est fournie à la conduite principale (2) une quantité donnée de combustible constante dans le temps, une soufflante (7), qui est en liaison active avec la conduite principale (2) et qui détermine le débit d'air dans la conduite principale (2), et un dispositif de réglage (11) commandant le débit de la soufflante (7) en fonction du signal de sortie du détecteur d'écoulement (10) et éventuellement en fonction d'autres grandeurs influençant le rapport optimal combustible/air, caractérisé en ce qu'à la section de la conduite principale (2) contenant le détecteur d'écoulement (10) et l'orifice de la conduite de combustible (13) est branchée en parallèle au moins une conduite supplémentaire (21) qui raccorde le brûleur (1) à un orifice d'entrée d'air et dans laquelle débouche une autre conduite de combustible (23) par laquelle est fournie à la conduite supplémentaire (21) une quantité donnée de combustible constante dans le temps et qui reste, avec la quantité de combustible fournie à la conduite principale (2), dans un rapport égal au rapport des quantités d'air alimentées par la conduite principale et par la conduite supplémentaire, et en ce que la conduite supplémentaire (21) et l'autre conduite de combustible (23) qui lui est adjointe peuvent être sélectivement mises en circuit et fermées.
  2. Dispositif suivant la revendication 1, caractérisé en ce que la conduite principale et les conduites supplémentaires (2, 21) sont en liaison avec des orifices d'entrée d'air (8, 22) non étranglés ou avec une conduite d'entrée commune et en ce que les quantités de combustible fournies sont proportionnelles aux sections transversales des conduites principales et supplémentaires.
  3. Dispositif suivant l'une ou l'autre des revendications 1 et 2, caractérisé en ce que la vitesse de réglage des organes de fermeture (25, 24) agencés dans la conduite supplémentaire (21) et dans l'autre conduite de combustible (23) est adaptée à la vitesse de modification de la puissance de soufflante.
  4. Dispositif suivant l'une quelconque des revendications précédentes, caractérisé en ce que le débit de la conduite supplémentaire (21) est constamment modifiable de façon correspondante à l'autre conduite de combustible (23).
  5. Dispositif suivant l'une quelconque des revendications précédentes, caractérisé en ce que la soufflante (7) est agencée dans un conduit de gaz de fumée (5) raccordé au brûleur (1).
EP87117963A 1987-01-02 1987-12-04 Dispositif de régulation de puissance de générateurs de chaleur à carburant Expired - Lifetime EP0275439B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87117963T ATE73533T1 (de) 1987-01-02 1987-12-04 Einrichtung zur leistungsregelung von brennstoffbefeuerten waermeerzeugern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3700084 1987-01-02
DE19873700084 DE3700084A1 (de) 1987-01-02 1987-01-02 Einrichtung zur leistungsregelung von brennstoffbefeuerten waermeerzeugern

Publications (2)

Publication Number Publication Date
EP0275439A1 EP0275439A1 (fr) 1988-07-27
EP0275439B1 true EP0275439B1 (fr) 1992-03-11

Family

ID=6318414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117963A Expired - Lifetime EP0275439B1 (fr) 1987-01-02 1987-12-04 Dispositif de régulation de puissance de générateurs de chaleur à carburant

Country Status (3)

Country Link
EP (1) EP0275439B1 (fr)
AT (1) ATE73533T1 (fr)
DE (2) DE3700084A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US8905063B2 (en) 2011-12-15 2014-12-09 Honeywell International Inc. Gas valve with fuel rate monitor
US8947242B2 (en) 2011-12-15 2015-02-03 Honeywell International Inc. Gas valve with valve leakage test
US9074770B2 (en) 2011-12-15 2015-07-07 Honeywell International Inc. Gas valve with electronic valve proving system
US9234661B2 (en) 2012-09-15 2016-01-12 Honeywell International Inc. Burner control system
US9557059B2 (en) 2011-12-15 2017-01-31 Honeywell International Inc Gas valve with communication link

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101214745B1 (ko) * 2011-03-25 2012-12-21 주식회사 경동나비엔 유로 분리형 가스-공기 혼합장치
US9995486B2 (en) 2011-12-15 2018-06-12 Honeywell International Inc. Gas valve with high/low gas pressure detection
US9835265B2 (en) 2011-12-15 2017-12-05 Honeywell International Inc. Valve with actuator diagnostics
US9851103B2 (en) 2011-12-15 2017-12-26 Honeywell International Inc. Gas valve with overpressure diagnostics
US9846440B2 (en) 2011-12-15 2017-12-19 Honeywell International Inc. Valve controller configured to estimate fuel comsumption
KR101319256B1 (ko) * 2012-03-05 2013-10-17 주식회사 경동나비엔 연소기기용 가스 공기 혼합장치
US10422531B2 (en) 2012-09-15 2019-09-24 Honeywell International Inc. System and approach for controlling a combustion chamber
EP2868970B1 (fr) 2013-10-29 2020-04-22 Honeywell Technologies Sarl Dispositif de régulation
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
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
DE102018119457A1 (de) * 2018-08-09 2020-02-13 Ebm-Papst Landshut Gmbh Verfahren zur Regelung eines Mischungsverhältnisses von Brenngas und Luft für ein Heizgerät

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE953903C (de) * 1951-08-01 1956-12-06 Georg Hegwein Sicherheitsvorrichtung fuer Gasfeuerungsanlagen
LU79664A1 (de) * 1978-05-16 1979-12-06 M Olieman Verfahren und vorrichtung zur regelung von kesselfeuerungsanlagen
DE3011544C2 (de) * 1980-03-22 1983-05-19 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Steuerung der Brennstoff- und Luftzufuhr zu einer brennstoffbeheizten Wärmequelle
DE3019622A1 (de) * 1980-05-22 1981-11-26 SIEMENS AG AAAAA, 1000 Berlin und 8000 München Verfahren zum betrieb einer vergasungsbrenner/heizkesselanlage
NL8102571A (nl) * 1981-05-26 1982-12-16 Neom Bv Inrichting voor het verhitten van een stromend warmtetransporterend fluidum.
DE3132867A1 (de) * 1981-08-20 1983-03-03 Kraft Hausherr GmbH & Co KG, 4322 Sprockhövel Verfahren und schaltungsanordnung zur erzielung eines gleichbleibenden mischungsverhaeltnisses von brennstoff und verbrennungsluft an feuerungseinrichtungen
CH655565B (fr) * 1982-02-02 1986-04-30

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US8905063B2 (en) 2011-12-15 2014-12-09 Honeywell International Inc. Gas valve with fuel rate monitor
US8947242B2 (en) 2011-12-15 2015-02-03 Honeywell International Inc. Gas valve with valve leakage test
US9074770B2 (en) 2011-12-15 2015-07-07 Honeywell International Inc. Gas valve with electronic valve proving system
US9557059B2 (en) 2011-12-15 2017-01-31 Honeywell International Inc Gas valve with communication link
US9234661B2 (en) 2012-09-15 2016-01-12 Honeywell International Inc. Burner control system

Also Published As

Publication number Publication date
DE3700084C2 (fr) 1991-03-21
DE3700084A1 (de) 1988-07-28
ATE73533T1 (de) 1992-03-15
EP0275439A1 (fr) 1988-07-27
DE3777380D1 (de) 1992-04-16

Similar Documents

Publication Publication Date Title
EP0275439B1 (fr) Dispositif de régulation de puissance de générateurs de chaleur à carburant
DE69415723T2 (de) Regelvorrichtung des Gas-Luftverhältnisses für einen Temperaturregelkreis eines Gasgerätes
DE3638410C2 (fr)
DE2322480A1 (de) An gasbrenner anschliessbare vorrichtung zur steuerung der verbrennung bei druckaenderungen im verteilernetz
DE19645180A1 (de) Druckzerstäuberbrenner für ein motorunabhängiges Fahrzeugheizgerät
EP0062854A1 (fr) Dispositif de chauffage à gaz pour eau ou air
DE3739805C3 (de) Vorrichtung zum Regeln der Drehzahl einer Brennkraftmaschine
DE19627857C2 (de) Verfahren zum Betrieb eines Gasgebläsebrenners
EP1330953B1 (fr) Système de brûleurs avec plusieurs systèmes de transfert de chaleur et appareil de cuisson pourvu d'un tel système de brûleurs
DE19921045B4 (de) Brenner zur Verbrennung von flüssigen und/oder gasförmigen Brennstoffen in Feuerungsanlagen
EP0567060A1 (fr) Procédé pour commander un brûleur à gaz avec un ventilateur
DE2733289C2 (de) Vorrichtung zum Regeln der Brennstoffzufuhr zu einem Heißwasser- oder Heißdampferzeuger
DE3707883C1 (de) Einrichtung zur Leistungsregelung von brennstoffbefeuerten Waermeerzeugern
DE2906223A1 (de) Brennstoffsteuerung fuer turbinen-nachbrenner
DE19501749C2 (de) Verfahren und Vorrichtung zum Steuern eines Gas-Gebläsebrenners
EP0614048A1 (fr) Dispositif avec un automate à brûleur
DE4015055B3 (de) Brennstoffregelsystem für die Nachbrenner eines Gasturbinentriebwerks und Regelventile dafür
EP0036613B1 (fr) Dispositif de régulation pour un échauffeur à eau ou air à combustion gazeuse pouvant être commandé par un capteur de température
DE3114942A1 (de) Regeleinrichtung fuer den gasbefeuerten heizkessel einer warmwasser-heizungsanlage
DE2834025A1 (de) Gasbeheiztes geraet, insbesondere wassererhitzer
EP0857916B1 (fr) Methode de commande pour un brûleur
DE3517471A1 (de) Regelung fuer das brennstoff-luftverhaeltnis einer brennstoffbeheizten waermequelle
EP1241410B1 (fr) Dispositif d'alimentation en gaz pour un chauffe-eau à gaz
DE2315540C3 (de) Vorrichtung zur Regelung des Mischungsverhältnisses zweier in je einer Leitung einer Anlage zugeführten Gase
EP0622586B1 (fr) Procédé de fonctionnement d'une conduite et dispositif pour effectuer le procédé

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: A1

Designated state(s): AT BE CH DE FR GB IT LI NL

17P Request for examination filed

Effective date: 19880625

17Q First examination report despatched

Effective date: 19900618

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI NL

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19920311

REF Corresponds to:

Ref document number: 73533

Country of ref document: AT

Date of ref document: 19920315

Kind code of ref document: T

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

Ref document number: 3777380

Country of ref document: DE

Date of ref document: 19920416

ET Fr: translation filed
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
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19981123

Year of fee payment: 12

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

Ref country code: GB

Payment date: 19981125

Year of fee payment: 12

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

Ref country code: BE

Payment date: 19981208

Year of fee payment: 12

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

Ref country code: CH

Payment date: 19981210

Year of fee payment: 12

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

Ref country code: AT

Payment date: 19981229

Year of fee payment: 12

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

Ref country code: NL

Payment date: 19981231

Year of fee payment: 12

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

Ref country code: DE

Payment date: 19990109

Year of fee payment: 12

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: 19991204

Ref country code: AT

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

Effective date: 19991204

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

Ref country code: CH

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

Effective date: 19991231

Ref country code: BE

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

Effective date: 19991231

Ref country code: LI

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

Effective date: 19991231

BERE Be: lapsed

Owner name: KARL DUNGS G.M.B.H. & CO.

Effective date: 19991231

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

Ref country code: NL

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

Effective date: 20000701

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

Effective date: 19991204

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

Ref country code: FR

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

Effective date: 20000831

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20000701

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: 20001003

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST