EP0964326B1 - Safety device for gas burner - Google Patents

Safety device for gas burner Download PDF

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Publication number
EP0964326B1
EP0964326B1 EP99109479A EP99109479A EP0964326B1 EP 0964326 B1 EP0964326 B1 EP 0964326B1 EP 99109479 A EP99109479 A EP 99109479A EP 99109479 A EP99109479 A EP 99109479A EP 0964326 B1 EP0964326 B1 EP 0964326B1
Authority
EP
European Patent Office
Prior art keywords
gas
burner
valve
flame
ignition
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
EP99109479A
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German (de)
French (fr)
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EP0964326A1 (en
Inventor
Robert Zink
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.)
Isphording Germany GmbH
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Isphording Germany GmbH
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Publication date
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Publication of EP0964326A1 publication Critical patent/EP0964326A1/en
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Publication of EP0964326B1 publication Critical patent/EP0964326B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices
    • F24C3/126—Arrangement or mounting of control or safety devices on ranges
    • 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
    • F23N2227/00—Ignition or checking
    • F23N2227/32—Igniting for a predetermined number of cycles
    • 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
    • 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
    • F23N2237/00—Controlling
    • F23N2237/02—Controlling two or more burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/08—Household apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1407—Combustion failure responsive fuel safety cut-off for burners
    • Y10T137/1516—Thermo-electric

Definitions

  • the invention relates to a device for securing a Gas burner against unburned gas one arranged in the gas supply line, by hand actuable valve and an additional one in the line arranged solenoid valve that when extinguished Flame closes, and one at the gas burning point arranged spark plug through which the gas is ignited and which indicates whether gas is escaping unburned.
  • thermocouple delivers burning gas flame a thermal current for magnet use and keeps the spring-loaded gas valve open as long as how the gas flame heats the thermocouple probe tip. If the gas flame on the burner goes out, that closes Gas valve of the solenoid insert the gas flow to the burner.
  • thermocouple which is a solenoid valve as long as the flame burns.
  • the Time from extinguishing the flame to closing the solenoid valve is relatively long.
  • JP 5615816 known per se, the gas supply quantity electronically Taxes. The flame is not monitored here intended.
  • the object of the invention is to protect against unburned escaping gas to a gas hob improve that with a no longer ignitable burner the unburned gas flow automatically and is interrupted as quickly as possible and at the same time Release of the gas flow via the gas valve Indentation time at the valve is drastically restricted.
  • This object is achieved in that the solenoid valve and the spark plug with one electronic control device are connected, the with unburned gas, the spark plug to Ignition brings and if the ignition is unsuccessful within one predetermined time or number of Ignition pulses the solenoid valve closes.
  • the liability of the spring-loaded solenoid valve by a single Push in the switching axis of the manually operable Valve can be generated. It is also an advantage if by the switching axis of the manually operable valve Switch, in particular a microswitch, can be actuated, which switches the control device on and off.
  • the device for securing a gas burning point, especially a gas hob against unburned outflowing gas has one in a gas valve arranged electromagnet 5 (magnet insert), its necessary holding current to open the gas valve 8 during the gas combustion on the burner 4 by a electronic control device 2, in particular a (externally stored) module box on the electromagnet is transmitted with one at the same time in the Device 2 existing electronically controlled Zündund Flame monitoring module, which has a Microswitch 12 a voltage on the spark plug 3 am Burner releases. With a flashover from the The spark plug to the burner is the gas flowing out on Burner ignited, at the same time the gas flame on Burner monitored by the spark plug.
  • Control device 2 By rotating the tap axis 7 from the The electronic position is closed Control device 2, in particular module box 2, activates and supplies current for the electromagnet (Magnet insert 5). The gas path is still so far closed, although the cock plug 8 clears the gas path. If the tap axis 7 is now pressed in once, it will the magnet insert by electricity from the module box kept open and the gas flows to burner 4. This pushing gives the module box 2 the command voltage to give the spark plug 3. When a spark strikes the burner becomes between the burner and the spark plug ignited.
  • the module box 2 interrupts the power supply to Magnet insert 5 and the gas valve is closed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Feeding And Controlling Fuel (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Sichern einer Gasbrennstelle gegen unverbrannt ausströmendes Gas mit einem in der Gaszuführungsleitung angeordneten, von Hand betätigbarem Ventil und einem in der Leitung zusätzlich angeordneten Elektromagnetventil, das bei erloschener Flamme schließt, und einer an der Gasbrennstelle angeordneten Zündkerze, durch die das Gas gezündet wird und die anzeigt, ob Gas unverbrannt ausströmt.The invention relates to a device for securing a Gas burner against unburned gas one arranged in the gas supply line, by hand actuable valve and an additional one in the line arranged solenoid valve that when extinguished Flame closes, and one at the gas burning point arranged spark plug through which the gas is ignited and which indicates whether gas is escaping unburned.

Nach dem Stand der Technik sind mehrere Sicherungen gegen unverbrannt ausströmendes Gas am Brenner bekannt. So ist eine gesicherte Gasarmatur mit eingebautem Magneteinsatz in Verbindung mit einem zum Brenner hin führenden Thermoelement bekannt. Das Thermoelement liefert bei brennender Gasflamme einen Thermostrom zum Magneteinsatz und hält das federbelastete Gasventil solange geöffnet, wie die Gasflamme die Thermoelement-Fühlerspitze beheizt. Verlöscht die Gasflamme am Brenner, so schließt das Gasventil des Magneteinsatzes den Gasfluß zum Brenner.According to the state of the art, several fuses are against unburned gas escaping from the burner is known. So is a secured gas valve with built-in magnet insert in connection with one leading to the burner Thermocouple known. The thermocouple delivers burning gas flame a thermal current for magnet use and keeps the spring-loaded gas valve open as long as how the gas flame heats the thermocouple probe tip. If the gas flame on the burner goes out, that closes Gas valve of the solenoid insert the gas flow to the burner.

Dies hat den Nachteil, daß das Gasventil am Magneteinsatz durch mechanisches Eindrücken des Knebels an der Gasarmatur über einen Stößel solange von Hand eingedrückt werden muß, bis ein genügender Haltestrom auf das Magnetventil einwirkt und das Gasventil offenhält, wobei die Eindrückzeit auf das Gasventil bis zu 10 Sekunden dauern kann. Ein weiterer Nachteil ist, daß bei Erlöschen der Flamme am Gasbrenner die Schließung des Gasventils bis zu 90 Sekunden andauert, so daß in dieser Zeit unverbranntes Gas am Brenner ausströmen kann, da die Montage des Thermoelementes am Brenner aufwendig ist, und die Fühlerspitze am Thermoelement durch unachtsame Brennersäuberung oft beschädigt und unbrauchbar wird.This has the disadvantage that the gas valve on the solenoid insert by mechanically pushing the toggle on the The gas valve is pushed in by hand using a plunger must be until a sufficient holding current on the Solenoid valve acts and keeps the gas valve open, whereby the indentation time on the gas valve up to 10 seconds can take. Another disadvantage is that when it goes out the flame on the gas burner closes the gas valve lasts up to 90 seconds, so during this time unburned gas can flow out at the burner because the Assembly of the thermocouple on the burner is complex, and the sensor tip on the thermocouple due to careless Burner cleaning often becomes damaged and unusable.

Eine weitere Möglichkeit ist bekannt mit einer ungesicherten Gasarmatur mit einer Ionisationszündung durch eine Zündkerze am Brenner. Hierbei mißt ein elektronischer Meßverstärker den Strom zwischen Zündkerze am Brenner und dem Brennerdeckel. Durch die Ionisation der Luft erkennt die Elektronik, ob die Gasflamme am Brenner brennt oder nicht. Verlischt die Gasflamme, so wird der Brenner sofort neu gezündet.Another possibility is known with a unsecured gas valve with an ionization ignition by a spark plug on the burner. This measures electronic measuring amplifier the current between spark plug on the burner and the burner cap. By ionization In the air, the electronics recognize whether the gas flame is on Burner burns or not. If the gas flame goes out, so the burner is re-ignited immediately.

Hier ist ein Nachteil, wenn nach Verlöschen der Gasflamme die Zündkerze neu zündet, jedoch der Brenner nicht anspringt, daß dann solange die Gasflamme nicht brennt und unverbranntes Gas ausströmen kann. Die Gaszufuhr zum Brenner ist in diesem Fall nur über den Gashahn abzustellen. Bei einem Defekt am Brenner, zum Beispiel entfernter Brennerdeckel oder teilverstopfte Gasaustrittsöffnungen, zündet die Zündkerze, aber das Gas strömt unverbrannt aus.Here's a disadvantage if after the gas flame goes out the spark plug re-ignites, but the burner does not starts that as long as the gas flame does not burn and can escape unburned gas. The gas supply to the In this case, the burner is only on the gas tap remedy. If there is a defect in the burner, for example removed burner cap or partially blocked Gas outlet openings, ignites the spark plug, but the gas emanates unburned.

Aus der US 4 147 494 ist es bekannt, die Zündkerze einer Gasbrennstelle elektronisch zu steuern. Eine Überwachung erfolgt durch ein Thermoelement, das ein Magnetventil solange offen hält, wie die Flamme brennt. Die Zeitspanne vom Verlöschen der Flamme bis zum Schließen des Magnetventils ist hierbei verhältnismäßig lang. Aus der US 5 018 964 ist eine ähnliche Vorrichtung bekannt, bei der die Flamme auch über ein Thermoelement überwacht wird, so daß wiederum nach dem Verlöschen der Flamme viel unverbranntes Gas ausströmt, ehe die Zufuhr geschlossen wird. Schließlich ist es aus der JP 5615816 an sich bekannt, die Gaszufuhrmenge elektronisch zu steuern. Eine Überwachung der Flamme ist hierbei nicht vorgesehen.From US 4 147 494 it is known to have a spark plug Control the gas burner electronically. A surveillance is done by a thermocouple, which is a solenoid valve as long as the flame burns. The Time from extinguishing the flame to closing the solenoid valve is relatively long. Out a similar device is known from US Pat. No. 5,018,964, where the flame is also monitored via a thermocouple will, so that again after the flame goes out a lot of unburned gas escapes before the supply is closed. Finally, it is from JP 5615816 known per se, the gas supply quantity electronically Taxes. The flame is not monitored here intended.

Aufgabe der Erfindung ist es, die Sicherheit gegen unverbranntes ausströmendes Gas einer Gaskochstelle so zu verbessern, daß bei einem nicht mehr zündfähigen Brenner die unverbrannt ausströmende Gasmenge automatisch und schnellstens unterbrochen wird und gleichzeitig bei Freigabe des Gasstromes über das Gasventil die Eindrückzeit am Ventil drastisch eingeschränkt wird.The object of the invention is to protect against unburned escaping gas to a gas hob improve that with a no longer ignitable burner the unburned gas flow automatically and is interrupted as quickly as possible and at the same time Release of the gas flow via the gas valve Indentation time at the valve is drastically restricted.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Elektromagnetventil und die Zündkerze mit einer elektronischen Steuerungseinrichtung verbunden sind, die bei unverbrannt ausströmenden Gas die Zündkerze zum Zünden bringt und bei erfolgloser Zündung innerhalb einer vorbestimmten Zeit oder vorgegebener Anzahl von Zündimpulsen das Elektromagnetventil schließt.This object is achieved in that the solenoid valve and the spark plug with one electronic control device are connected, the with unburned gas, the spark plug to Ignition brings and if the ignition is unsuccessful within one predetermined time or number of Ignition pulses the solenoid valve closes.

Eine solche Ausführung erhöht bei einfacher Konstruktion die Sicherheit wesentlich. Hierbei ist von Vorteil, wenn der Haftstrom zum Öffnen des Elektromagnetventils von der Steuerungseinrichtung erzeugt wird.Such a design increases with a simple construction security essential. It is an advantage if the static current to open the solenoid valve from the Control device is generated.

Vorzugsweise wird vorgeschlagen, daß die Haftung des federbelasteten Elektromagnetventils durch ein einmaliges Eindrücken der Schaltachse des von Hand betätigbaren Ventils erzeugbar ist. Auch ist von Vorteil, wenn durch die Schaltachse des von Hand betätigbaren Ventils ein Schalter, insbesondere ein Mikroschalter, betätigbar ist, der die Steuerungseinrichtung ein- und ausschaltet.It is preferably proposed that the liability of the spring-loaded solenoid valve by a single Push in the switching axis of the manually operable Valve can be generated. It is also an advantage if by the switching axis of the manually operable valve Switch, in particular a microswitch, can be actuated, which switches the control device on and off.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgenden näher beschrieben. Es zeigen

Fig. 1
eine Darstellung eines Brennersystems mit Gashahn, Mikroschalter, Modulbox, Zündkerze und Gasbrenner,
Fig. 2 bis 5
Impulsdiagramme bei verschiedenen Gebrauchssituationen.
An embodiment of the invention is shown in the drawings and will be described in more detail below. Show it
Fig. 1
a representation of a burner system with gas tap, microswitch, module box, spark plug and gas burner,
2 to 5
Pulse diagrams for different usage situations.

Die Vorrichtung zur Sicherung einer Gasbrennstelle, insbesondere einer Gaskochstelle gegen unverbranntes ausströmendes Gas weist einen in einem Gasventil angeordneten Elektromagneten 5 (Magneteinsatz) auf, dessen notwendiger Haltestrom zur Öffnung des Gasventils 8 während der Gasverbrennung am Brenner 4 durch eine elektronische Steuerungseinrichtung 2, insbesondere eine (extern gelagerte) Modulbox auf den Elektromagneten übertragen wird, mit einem gleichzeitig in der Einrichtung 2 vorhandenen elektronisch gesteuerten Zündund Flammenüberwachungsmodul, welches über einen Mikroschalter 12 eine Spannung auf die Zündkerze 3 am Brenner freigibt. Durch einen Funkenüberschlag von der Zündkerze zum Brenner wird das ausströmende Gas am Brenner gezündet, dabei gleichzeitig die Gasflamme am Brenner durch die Zündkerze überwacht. Bei Verlöschen der Gasflamme wird automatisch der Brenner wieder gezündet und die Gaszufuhr zum Brenner bei einer nicht erfolgten Wiederzündung des Gases innerhalb einer vorgegebenen Zeit oder eine Anzahl von vorgegebenen Zündfunken durch eine sofortige Stromunterbrechung zwischen Modulbox und Elektromagneten unterbrochen, so daß kein unverbranntes Gas am Brenner ausströmen kann.The device for securing a gas burning point, especially a gas hob against unburned outflowing gas has one in a gas valve arranged electromagnet 5 (magnet insert), its necessary holding current to open the gas valve 8 during the gas combustion on the burner 4 by a electronic control device 2, in particular a (externally stored) module box on the electromagnet is transmitted with one at the same time in the Device 2 existing electronically controlled Zündund Flame monitoring module, which has a Microswitch 12 a voltage on the spark plug 3 am Burner releases. With a flashover from the The spark plug to the burner is the gas flowing out on Burner ignited, at the same time the gas flame on Burner monitored by the spark plug. When the The burner is automatically ignited again and the gas supply to the burner if there is none Reignition of the gas within a given time or a number of predetermined ignition sparks from one immediate power interruption between module box and Electromagnets interrupted so that no unburned Gas can flow out of the burner.

Durch die Drehung der Hahnachse 7 aus der Geschlossenstellung heraus wird die elektronische Steuerungseinrichtung 2, insbesondere die Modulbox 2, aktiviert und liefert nun Strom für den Elektromagneten (Magneteinsatz 5). Der Gasweg ist bis jetzt noch geschlossen, obwohl das Hahnküken 8 den Gasweg freigibt. Wird nun die Hahnachse 7 einmalig eingedrückt, so wird der Magneteinsatz durch Strom aus der Modulbox offengehalten und das Gas strömt bis zum Brenner 4. Dieses Eindrücken gibt der Modulbox 2 den Befehl Spannung an die Zündkerze 3 zu geben. Beim Überschlag eines Funken zwischen Brenner und Zündkerze wird der Brenner gezündet.By rotating the tap axis 7 from the The electronic position is closed Control device 2, in particular module box 2, activates and supplies current for the electromagnet (Magnet insert 5). The gas path is still so far closed, although the cock plug 8 clears the gas path. If the tap axis 7 is now pressed in once, it will the magnet insert by electricity from the module box kept open and the gas flows to burner 4. This pushing gives the module box 2 the command voltage to give the spark plug 3. When a spark strikes the burner becomes between the burner and the spark plug ignited.

Wird nach Gebrauch der Brenner 4 ausgeschaltet, das heißt die Hahnachse 7 durch Drehen in die 0-Position gedreht, so unterbricht die Modulbox 2 die Stromzufuhr zum Magneteinsatz 5 und das Gasventil wird geschlossen.If the burner 4 is switched off after use, that is turn the cock axis 7 by turning it to the 0 position, the module box 2 interrupts the power supply to Magnet insert 5 and the gas valve is closed.

Beim Betrieb des Brenners können folgende Störzustände auftreten, die die Sicherheit des Systems nicht beeinflussen.

  • a: Es steht keine Versorgungsspannung 9 zur Verfügung = Gas kann nicht ausströmen.
  • b: Die Versorgungsspannung 9 wird während des Betriebes unterbrochen = Magneteinsatz schließt automatisch = Gas kann nicht ausströmen.
  • c: Die elektrische Verbindung zwischen Modulbox und Zündkerze wird unterbrochen (A3 / E3) = es fließt kein Ionisationsstrom mehr, die Modulbox schaltet den Magneteinsatz ab.
  • d: Die elektrische Verbindung zwischen Magneteinsatz und Modulbox wird unterbrochen (A1 / A2) = Gaszufuhr wird sofort gestoppt.
  • e: Die elektrische Verbindung zwischen Schalter (S1) und Modulbox wird unterbrochen = Gaszufuhr zum Brenner wird durch Schließung des Magnetventils geschlossen, anschließend kann der Brenner nicht mehr in Betrieb genommen werden = Gas strömt nicht aus.
  • f: Die Gaszufuhr vor dem Gaseingang 6 des Gashahnes wird unterbrochen = die Zündkerze versucht den Brenner erneut zu zünden und die Modulbox schaltet sich entweder nach X Zündversuchen oder nach X Sekunden automatisch ab.
  • g: Die Gasflamme 10 wird während des Betriebs gelöscht = Modulbox gibt Spannung an die Zündkerze, Brenner wird gezündet und brennt wieder. Kann der Brenner nicht in Betrieb genommen werden, zum Beispiel es wurde der Brennerdeckel entfernt, so schaltet sich entweder nach X Zündversuchen oder nach X Sekunden das System automatisch ab.
    • The following malfunctions can occur during operation of the burner, which do not affect the safety of the system.
  • a: There is no supply voltage 9 available = gas cannot flow out.
  • b: The supply voltage 9 is interrupted during operation = magnet insert closes automatically = gas cannot flow out.
  • c: The electrical connection between the module box and spark plug is interrupted (A3 / E3) = there is no longer any ionization current, the module box switches off the magnet insert.
  • d: The electrical connection between the magnetic insert and the module box is interrupted (A1 / A2) = gas supply is stopped immediately.
  • e: The electrical connection between switch (S1) and module box is interrupted = gas supply to the burner is closed by closing the solenoid valve, then the burner can no longer be started = gas does not flow out.
  • f: The gas supply in front of the gas inlet 6 of the gas tap is interrupted = the spark plug tries to ignite the burner again and the module box switches itself off either after X ignition attempts or after X seconds.
  • g: The gas flame 10 is extinguished during operation = module box gives voltage to the spark plug, burner is ignited and burns again. If the burner cannot be started, for example the burner cover has been removed, the system switches off automatically after X ignition attempts or after X seconds.

    • Die in den Fig. 2 bis 5 aufgeführten Impulsdiagramme geben die verschiedenen Gebrauchssituationen wieder:

  • darin bedeuten:
    S1:
    Schalterstellung des Griffschaftes 0 = Aus; 1 = Voll- oder Kleinbrand (große oder kleine Flamme)
    A1/A2:
    der Strom der erforderlich ist, um den Magneteinsatz offen zu halten; 0 = kein Strom; 1 = Strom vorhanden
    A3/E3:
    der Zündfunke zwischen Zündkerze und Brenner
    10:
    die brennende Flamme 0 = Aus; 1 = Flamme brennt
    9:
    die Versorgungsspannung der Modulbox
    Diagramm 1:
    zeigt den normalen Gebrauchszustand. Der Brenner wird in Betrieb genommen, nach 2 Zündimpulsen brennt die Flamme, nach Beendigung des Kochvorganges wird abgeschaltet.
    Diagramm 2:
    Der Brenner wird in Betrieb genommen, nach X Zündimpulsen brennt die Flamme immer noch nicht, die Stromzufuhr zum Magneteinsatz wird unterbrochen, das System schaltet sich ab.
    Diagramm 3:
    zeigt den normalen Gebrauchszustand. Der Brenner wird in Betrieb genommen, nach einem Zündimpuls brennt die Flamme, nach 5 Zeiteinheiten wird die Flamme ausgeblasen, die Wiederzündung wird aktiviert, der Brenner brennt wieder. Nach einiger Zeit wird die Flamme nochmals ausgeblasen, beim Beginn des 5. Taktimpulses brennt die Flamme wieder.
    Diagramm 4:
    zeigt den normalen Gebrauchszustand. Der Brenner wird in Betrieb genommen, nach einem Zündimpuls brennt die Flamme, nach 5 Zeiteinheiten wird die Versorgungsspannung unterbrochen, der Strom zum Magneteinsatz wird unterbrochen, der Gasstrom wird unterbrochen.
    • The pulse diagrams shown in FIGS. 2 to 5 show the different usage situations:
  • mean:
    S1:
    Switch position of the handle shaft 0 = off; 1 = full or small fire (large or small flame)
    A1 / A2:
    the current required to keep the magnet insert open; 0 = no current; 1 = electricity available
    A3 / E3:
    the spark between the spark plug and the burner
    10:
    the burning flame 0 = off; 1 = flame is burning
    9:
    the supply voltage of the module box
    Diagram 1:
    shows the normal state of use. The burner is put into operation, the flame burns after 2 ignition pulses, and the cooking process is switched off.
    Diagram 2:
    The burner is put into operation, after X ignition pulses the flame still does not burn, the power supply to the magnet insert is interrupted, the system switches off.
    Diagram 3:
    shows the normal state of use. The burner is put into operation, the flame burns after an ignition pulse, after 5 time units the flame is blown out, the re-ignition is activated, the burner burns again. After a while the flame is blown out again, at the beginning of the 5th pulse the flame burns again.
    Diagram 4:
    shows the normal state of use. The burner is put into operation, the flame burns after an ignition pulse, after 5 time units the supply voltage is interrupted, the current to the magnet insert is interrupted, the gas flow is interrupted.

    • Eine weitere Alternative besteht darin, daß das elektromagnetische Ventil im Gashahn liegt und nicht extern angebaut ist. Ferner zeichnet sich eine Ausführung dadurch aus, daß bei mehreren gesteuerten Gasbrennstellen immer nur die nicht wiederzündbare Brennstelle abgeschaltet wird und nicht alle Brennstellen.Another alternative is that the electromagnetic valve is in the gas tap and not is attached externally. There is also an execution characterized in that at several controlled gas burning points only the non-re-ignitable burning point is switched off and not all burners.

    Claims (6)

    1. A safety device for a gas burner (4, 10) to prevent the outflow of uncombusted gas, with a manually operated valve (7, 8) arranged in the gas supply line (6, 13) and, additionally arranged in the said line, an electromagnet valve (5, 6) which closes when the flame (10) is extinguished, and, arranged on the gas burner (4, 10), an ignition plug (3) by means of which the gas is ignited and which indicates whether gas is flowing out uncombusted, characterized in that the electromagnet valve (5, 6) and the ignition plug (3) are connected to an electronic control device (2) which causes the ignition plug (3) to spark in the event of uncombusted gas flowing out and upon unsuccessful ignition within a predetermined time or a preset number of ignition pulses closes the electromagnet valve (5, 6).
    2. A device according to Claim 1, characterized in that the latching current for the purpose of opening the electromagnet valve (5, 6) during the entire burn time of the burner is generated by the control device.
    3. A device according to Claim 1 or 2, characterized in that the latching of the spring-loaded electromagnet valve (5, 6) can be established by depressing the switching axis (7) of manually operated valve (7, 8) once for the entire burn time of the burner.
    4. A device according to any of the preceding claims, characterized in that, by means of the switching axis (7) of the manually operated valve (7, 8), a switch, in particular a microswitch (12), can be actuated which switches the control device on or off.
    5. A device according to any of the preceding claims, characterized in that the electromagnet valve lies within the housing of the gas valve (7, 8).
    6. A device according to any of the preceding claims, characterized in that, if several gas burners are controlled, only the burner that cannot be re-ignited can automatically be shut off.
    EP99109479A 1998-06-10 1999-05-12 Safety device for gas burner Expired - Lifetime EP0964326B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19825846 1998-06-10
    DE1998125846 DE19825846A1 (en) 1998-06-10 1998-06-10 Device for securing a gas burning point

    Publications (2)

    Publication Number Publication Date
    EP0964326A1 EP0964326A1 (en) 1999-12-15
    EP0964326B1 true EP0964326B1 (en) 2002-08-14

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    ID=7870466

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99109479A Expired - Lifetime EP0964326B1 (en) 1998-06-10 1999-05-12 Safety device for gas burner

    Country Status (5)

    Country Link
    US (1) US6322352B1 (en)
    EP (1) EP0964326B1 (en)
    AU (1) AU751061B2 (en)
    DE (2) DE19825846A1 (en)
    ES (1) ES2178320T3 (en)

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    Also Published As

    Publication number Publication date
    EP0964326A1 (en) 1999-12-15
    ES2178320T3 (en) 2002-12-16
    DE59902317D1 (en) 2002-09-19
    AU751061B2 (en) 2002-08-08
    DE19825846A1 (en) 1999-12-16
    AU3238599A (en) 1999-12-23
    US6322352B1 (en) 2001-11-27

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