EP1467150A2 - Security arrangement for ignition device - Google Patents

Security arrangement for ignition device Download PDF

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Publication number
EP1467150A2
EP1467150A2 EP04008590A EP04008590A EP1467150A2 EP 1467150 A2 EP1467150 A2 EP 1467150A2 EP 04008590 A EP04008590 A EP 04008590A EP 04008590 A EP04008590 A EP 04008590A EP 1467150 A2 EP1467150 A2 EP 1467150A2
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EP
European Patent Office
Prior art keywords
pin
contact
solenoid valve
button
valve
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
EP04008590A
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German (de)
French (fr)
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EP1467150B1 (en
EP1467150A3 (en
Inventor
Hans Hoeness
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Robert Bosch GmbH
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Robert Bosch GmbH
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Filing date
Publication date
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Publication of EP1467150A2 publication Critical patent/EP1467150A2/en
Publication of EP1467150A3 publication Critical patent/EP1467150A3/en
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Publication of EP1467150B1 publication Critical patent/EP1467150B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F23Q9/08—Pilot flame igniters with interlock with main fuel supply
    • F23Q9/12—Pilot flame igniters with interlock with main fuel supply to permit the supply to the main burner in dependence upon existence of pilot flame
    • F23Q9/14—Pilot flame igniters with interlock with main fuel supply to permit the supply to the main burner in dependence upon existence of pilot flame using electric means, e.g. by light-sensitive elements
    • 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
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F23N5/105—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/12—Fail safe for ignition failures
    • 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
    • F23N2235/24—Valve details

Definitions

  • thermoelectric ignition fuse with a valve housing and a push-button, which has a pin on a solenoid valve of a solenoid valve insert acts, with the solenoid valve in operative connection with an armature is in the pressed state of the button in contact with an electromagnet stands, and wherein the ignition fuse comprises an electric ignition device, the with at least one ground contact electrically conductive with the valve housing connected is.
  • thermoelectric ignition fuses ensure that when gas-powered Burners of the main gas flow is released only when a pilot light safe ignited.
  • an anchor For about 10 s, using a push-button, an anchor must be used against a pin a spring force is pressed on an electromagnet.
  • This is a Solenoid valve open, which clears the way for a pilot gas while the path is closed by a further valve for a main gas flow. simultaneously a circuit is closed, which causes a spark band, with which the ignition gas of the pilot flame is ignited on a pilot burner.
  • thermocouple The pilot flame heats a thermocouple.
  • the thermocouple is with the Electromagnet of the solenoid valve connected.
  • the thermo-current causes the Excitation of the electromagnet, whereby an anchor is held.
  • the Electromagnet can be designed as U-magnet, the anchor as an anchor plate.
  • the solenoid valve After releasing the button, the solenoid valve remains open. Continue the second valve for the main gas flow opened, which is located in the burner at the Ignited pilot flame.
  • a contact plate mounted on the pin is pressed against a contact spring connected to the electric ignition device. It thus forms a current path, starting from the electric ignition device via the contact spring, the contact plate, the pin, the guide bush of the pin and connected to the ground terminal of the electrical ignition valve housing.
  • the contact between the contact spring and the contact plate is about 1 to 3 mm, before the armature bears against the electromagnet, is closed.
  • thermoelectric Zündsch This requirement has for the error-free operation of the thermoelectric Zünd rejoin devis proved to be disadvantageous.
  • the Contact spring touches the ignition is audible with the audible and for the operator visible spark band started. Furthermore, the contact spring causes a Force increase for the keystroke. This combination is used by the operators of the Device often interpreted for the end of the keyway. The anchor is thus not pressed against the electromagnet and remains at a distance of about 1 up to 3 mm away from it. After releasing the button, it is therefore despite burning pilot flame is not held by the solenoid and the solenoid valve closes again, causing the ignition flame goes out and the burner is not is ignited. This operating error leads to complaints.
  • thermoelectric ignition fuse of the beginning to create mentioned type in which this operating error is reliably avoided.
  • the problem is solved by pressing the button while pressing a current path of the ground contact of the electric ignition device starting over the Valve body, the solenoid valve insert and the pin is formed, wherein the pin is electrically connected to the second pole of the electrical ignition device. This ensures that the circuit path is not closed until when the button is fully pressed. Furthermore, the user feels a solid Stop and the sparking tape is only effected when the button is pressed completely. There is no premature increase in force due to the contact spring on the user the end of the operation simulates.
  • a preferred variant of the invention provides that an electrical contact to the Closing the current path of the electric ignition device between the Electromagnet and the armature of the solenoid valve insert is formed. Thereby is achieved that when closing the contact of the electric ignition device the armature bears against the electromagnet and thus after ignition of the Zündbrenners the anchor is held securely by the electromagnet and the Solenoid valve remains open.
  • the electrical connection between the pin and the second pole of the electric ignition permanently on the contact plate connected. This is preferably done with a cable connection. This one has the Advantage that the entire arrangement ensures the function without tolerances and a Adjustment of the contact spring is eliminated.
  • a special construction provides that in the not depressed state of the Tasters and after ignition of the circuit path between the pin and the Solenoid valve is interrupted. This has the advantage that when you release the Buttons the contact is opened, the spark plug goes out and the ignition fuse in Function occurs.
  • the pin is opposite the valve housing electrically insulated. This ensures that the circuit path only is closed when the button is pressed to its end position.
  • a good insulation of the pin to the valve body is achieved in that the Spring plate and / or the socket of the pin guide and / or the socket of the valve and / or the pin guide and / or the valve made of electrically insulating material, preferably made of plastic, are formed.
  • a preferred variant of the invention provides that the input resistance of the electrical ignition device is designed high impedance. This may be necessary as a sufficient holding force of the magnetic insert is only achieved if the Surfaces of the electromagnet and the armature are very smooth. These smooth Surfaces are unfavorable for electrical contact, as the Contact resistance can be high. With this variant of the invention is ensured that the resistance of the current path while pressing the button is always small compared to the input resistance of the electrical ignition device and thereby the voltage drop at the contact point is low.
  • FIG. 1 shows a thermoelectric ignition fuse 1, as is known from the prior art Technique is known, shown in section and partly schematic representation.
  • the ignition fuse 1 consists of a valve housing 80 which has a gas inlet 81, a gas outlet 82 and a gas outlet 83. Of the Gas outlet 82 is via a line with a pilot burner 120 a Gas heating device connected. The gas outlet 83 is provided with a burner 110 the gas heating device, for example a gas-fired hot water connected. Furthermore, the ignition fuse 1 an electric ignition device 10th on, via a ground contact 12 conductively connected to the valve housing 80 is.
  • the ignition device 10 has a voltage source 13, for example a battery and a not detailed here ignition electronics, the Zündbrenner 120 generates a spark band when the ignition device 10th is activated.
  • the ignition fuse 1 has a button 20, which is connected to a pin 30.
  • the pin 30 is in the valve housing 80 by means a pin guide 40 out.
  • a contact plate 70 which is conductively connected to the pin 30.
  • the contact plate 70 closes upon actuation of the probe 20 makes electrical contact with a contact spring 11, which is connected to the second pole of the electrical ignition device 10.
  • the contact plate 70 is by means of a spring 60 which is opposite to a valve 100 supports, and presses on a mounted on the pin 30 spring plate 50, in held his position.
  • the valve housing 80 has at the lower end a receptacle 84 for a Solenoid valve insert 90.
  • This consists of a magnetic insert 93, in turn consists of an electromagnet 95 and an armature 94, which has a rigid Connection is in operative connection with a solenoid valve 91, which in Hibernation seals a passage 85 in the valve housing 80 from below.
  • the Solenoid valve 91 is supported by a spring 92 from the housing of the magnetic insert 93 off.
  • the solenoid 95 has a coil, not shown here, the with a thermocouple 150, which is located on the pilot burner 120, electrically connected is.
  • the button 20 When the ignition fuse 1 is put into operation, the button 20 must be pressed for approx. 10 seconds be pressed.
  • the pin 30 presses on the solenoid valve 91, which over the rigid connection presses the armature 94 to the solenoid 95.
  • the valve 100 seals the passage 85 from above, so that initially no gas can pass through the gas outlet 83 to the burner 110.
  • the contact between the contact spring 11 of the electric Ignition device 10 and the contact plate 70 is closed, so that a Stromlaufpfad 130 via the contact spring 11, the contact plate 70, the pin 30, the Pin guide 40, the valve housing 80 and the ground contact 12 to Voltage source 13 of the electrical ignition device 10 is formed.
  • This will generates a spark band on the pilot burner 120 via the ignition device 10, which ignites a pilot flame.
  • the pilot flame heats the Thermocouple 150, which generates a thermal current, which in turn Electromagnet 95 generates a magnetic force that attracts the armature 94.
  • the solenoid valve 91 Upon release of the button 20 remains after ignition of the pilot burner 120th the solenoid valve 91 is opened.
  • the button 20 goes together with the contact plate 70, by the spring force of the spring 60 back to the starting position and interrupts doing the contact between the contact plate 70 and the contact spring 11th At the same time, the valve 100 opens the passage 85 and thus gives the gas flow through the gas outlet 83 to the burner 110 free.
  • FIG. 2 shows an ignition fuse 1 in an inventive design.
  • button 20 is a circuit path 130 from the ground contact 12 of the electrical Ignition device 10, starting via the valve housing 80, the solenoid valve insert 90 and the pin 30 is formed.
  • the pin 30 is permanently electric - im shown embodiment by means of a cable connection 140 - between the Contact plate 70, which is conductively mounted on the pin 30, and the second pole of the electrical ignition device 10 is connected.
  • the pin 30 is in this arrangement with respect to the valve housing 80 electrically isolated.
  • the spring plate 50 is made of an electrically insulating Material, for example made of plastic, formed. An electrical contact via the spring 60 to the valve housing 80 is thereby prevented.
  • the Guide the pin 30 serving pin guide 40 a socket 41, which also is formed of an insulating material, preferably of plastic.
  • the valve 100 also has a bush 101 in the embodiment shown, which isolates the pin 30 from the valve housing 80.
  • the electrical Ignition 10 is designed high impedance, which is particularly necessary can be, if to achieve a higher holding power the surfaces of Electromagnet 95 and the anchor 94 very smooth, for example, lapped are formed and thereby possibly greater contact resistance result. This ensures that the resistance of the current path 130 at pressed button 20 always small compared to the input resistance of the electric ignition device 10 is.
  • electromagnet 95 and the armature 94 have special contact surfaces, for example in the form of very good conductive Metal surfaces and / or in the form of rough surfaces that touch one result in very low-resistance electrical contact.
  • the ignition fuse 1 is achieved that the contact point to close the current path 130 spatially from the contact point to open of the current path 130 is disconnected.

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

Abstract

The gas igniter (1) has a valve housing (80) and a push button (20) connected via a pin (30) to a magnetic valve (91) working with a valve seat (90). The magnetic valve has an armature (94) which, in the pressed position of the button, contacts the electromagnets (95), so that the electrical igniter is connected to an earth contact on the valve housing. The button has a flow path (130) extending from the earth contact over the valve housing (80) , the magnetic valve seat and the pin.

Description

Die Erfindung betrifft eine thermoelektrische Zündsicherung mit einem Ventilgehäuse und einem Taster, der über einen Stift auf ein Magnetventil eines Magnetventileinsatzes wirkt, wobei das Magnetventil in Wirkverbindung mit einem Anker steht, die im gedrückten Zustand des Tasters im Kontakt mit einem Elektromagneten steht, und wobei die Zündsicherung eine elektrische Zündeinrichtung aufweist, die mit mindestens einem Massekontakt elektrisch leitend mit dem Ventilgehäuse verbunden ist.The invention relates to a thermoelectric ignition fuse with a valve housing and a push-button, which has a pin on a solenoid valve of a solenoid valve insert acts, with the solenoid valve in operative connection with an armature is in the pressed state of the button in contact with an electromagnet stands, and wherein the ignition fuse comprises an electric ignition device, the with at least one ground contact electrically conductive with the valve housing connected is.

Stand der TechnikState of the art

Solche thermoelektrischen Zündsicherungen stellen sicher, dass bei gasbetriebenen Brennern der Hauptgasstrom erst freigegeben wird, wenn eine Zündflamme sicher gezündet ist. Such thermoelectric ignition fuses ensure that when gas-powered Burners of the main gas flow is released only when a pilot light safe ignited.

Dazu muss für circa 10 s mit Hilfe eines Tasters über einen Stift ein Anker gegen eine Federkraft auf einen Elektromagneten gedrückt werden. Dabei wird ein Magnetventil geöffnet, welches den Weg für ein Zündgas freigibt, während der Weg für einen Hauptgasstrom durch ein weiteres Ventil verschlossen wird. Gleichzeitig wird ein Stromkreis geschlossen, welcher ein Zündfunkenband bewirkt, mit welchem das Zündgas der Zündflamme an einem Zündbrenner entzündet wird.To do this, for about 10 s, using a push-button, an anchor must be used against a pin a spring force is pressed on an electromagnet. This is a Solenoid valve open, which clears the way for a pilot gas while the path is closed by a further valve for a main gas flow. simultaneously a circuit is closed, which causes a spark band, with which the ignition gas of the pilot flame is ignited on a pilot burner.

Die Zündflamme beheizt ein Thermoelement. Das Thermoelement ist mit dem Elektromagneten des Magnetventils verbunden. Der Thermostrom bewirkt die Erregung des Elektromagneten, wodurch ein Anker gehalten wird. Der Elektromagnet kann dabei als U-Magnet, der Anker als Ankerplatte ausgeführt sein.The pilot flame heats a thermocouple. The thermocouple is with the Electromagnet of the solenoid valve connected. The thermo-current causes the Excitation of the electromagnet, whereby an anchor is held. Of the Electromagnet can be designed as U-magnet, the anchor as an anchor plate.

Nach dem Loslassen des Tasters bleibt das Magnetventil somit offen. Weiterhin wird das zweite Ventil für den Hauptgasstrom geöffnet, welcher sich im Brenner an der Zündflamme entzündet.After releasing the button, the solenoid valve remains open. Continue the second valve for the main gas flow opened, which is located in the burner at the Ignited pilot flame.

Zum Schließen des für das Zündfunkenband notwendigen Stromkreises wird beim Drücken des Tasters ein am Stift montiertes Kontaktblech gegen eine mit der elektrischen Zündeinrichtung verbundenen Kontaktfeder gedrückt. Es bildet sich so ein Strompfad, ausgehend von der elektrischen Zündeinrichtung über die Kontaktfeder, das Kontaktblech, den Stift, die Führungsbuchse des Stiftes und dem mit dem Masseanschluss der elektrischen Zündeinrichtung verbundenen Ventilgehäuse aus.
Bei dieser Anordnung muss aus Toleranzgründen sichergestellt sein, dass der Kontakt zwischen der Kontaktfeder und dem Kontaktblech circa 1 bis 3 mm, bevor der Anker an dem Elektromagneten anliegt, geschlossen wird. To close the circuit necessary for the sparking circuit, when the button is pressed, a contact plate mounted on the pin is pressed against a contact spring connected to the electric ignition device. It thus forms a current path, starting from the electric ignition device via the contact spring, the contact plate, the pin, the guide bush of the pin and connected to the ground terminal of the electrical ignition valve housing.
In this arrangement, it must be ensured for tolerance reasons that the contact between the contact spring and the contact plate is about 1 to 3 mm, before the armature bears against the electromagnet, is closed.

Diese Anforderung hat sich für die fehlerfreie Bedienung der thermoelektrischen Zündsicherung als nachteilig herausgestellt. Sobald das Kontaktblech die Kontaktfeder berührt, wird der Zündvorgang mit dem für den Bediener hörbaren und sichtbaren Zündfunkenband gestartet. Weiterhin bewirkt die Kontaktfeder einen Kraftanstieg für den Tastendruck. Diese Kombination wird von den Bedienern des Gerätes häufig für das Ende des Tastenweges interpretiert. Der Anker wird somit nicht gegen den Elektromagneten gedrückt und bleibt in einem Abstand von circa 1 bis 3 mm davon entfernt. Nach dem Loslassen des Tasters wird er daher trotz brennender Zündflamme nicht vom Elektromagneten gehalten und das Magnetventil schließt sich wieder, wodurch die Zündflamme erlischt und der Brenner nicht gezündet wird. Durch diesen Bedienfehler kommt es zu Reklamationen.This requirement has for the error-free operation of the thermoelectric Zündsicherung proved to be disadvantageous. Once the contact sheet the Contact spring touches, the ignition is audible with the audible and for the operator visible spark band started. Furthermore, the contact spring causes a Force increase for the keystroke. This combination is used by the operators of the Device often interpreted for the end of the keyway. The anchor is thus not pressed against the electromagnet and remains at a distance of about 1 up to 3 mm away from it. After releasing the button, it is therefore despite burning pilot flame is not held by the solenoid and the solenoid valve closes again, causing the ignition flame goes out and the burner is not is ignited. This operating error leads to complaints.

Es ist Aufgabe der Erfindung eine thermoelektrische Zündsicherung der eingangs erwähnten Art zu schaffen, bei der dieser Bedienfehler sicher vermieden wird.It is an object of the invention is a thermoelectric ignition fuse of the beginning to create mentioned type in which this operating error is reliably avoided.

Vorteile der ErfindungAdvantages of the invention

Die Aufgabe wird dadurch gelöst, dass bei gedrücktem Taster ein Stromlaufpfad von dem Massekontakt der elektrischen Zündeinrichtung ausgehend über das Ventilgehäuse, den Magnetventileinsatz und den Stift gebildet ist, wobei der Stift elektrisch mit dem zweiten Pol der elektrischen Zündeinrichtung verbunden ist. Dadurch wird sichergestellt, dass der Stromlaufpfad erst dann geschlossen wird, wenn der Taster voll durchgedrückt ist. Weiterhin fühlt der Benutzer einen festen Anschlag und das Funkenband wird nur bei vollständig gedrücktem Taster bewirkt. Es tritt kein vorzeitiger Kraftanstieg durch die Kontaktfeder auf, der dem Benutzer das Ende des Bedienvorganges vortäuscht. The problem is solved by pressing the button while pressing a current path of the ground contact of the electric ignition device starting over the Valve body, the solenoid valve insert and the pin is formed, wherein the pin is electrically connected to the second pole of the electrical ignition device. This ensures that the circuit path is not closed until when the button is fully pressed. Furthermore, the user feels a solid Stop and the sparking tape is only effected when the button is pressed completely. There is no premature increase in force due to the contact spring on the user the end of the operation simulates.

Eine bevorzugte Erfindungsvariante sieht vor, dass ein elektrischer Kontakt zum Schließen des Stromlaufpfades der elektrischen Zündeinrichtung zwischen dem Elektromagneten und dem Anker des Magnetventileinsatzes ausgebildet ist. Dadurch wird erreicht, dass beim Schliessen des Kontaktes der elektrischen Zündeinrichtung der Anker am Elektromagneten anliegt und somit nach erfolgter Zündung des Zündbrenners der Anker vom Elektromagneten sicher gehalten wird und das Magnetventil geöffnet bleibt.A preferred variant of the invention provides that an electrical contact to the Closing the current path of the electric ignition device between the Electromagnet and the armature of the solenoid valve insert is formed. Thereby is achieved that when closing the contact of the electric ignition device the armature bears against the electromagnet and thus after ignition of the Zündbrenners the anchor is held securely by the electromagnet and the Solenoid valve remains open.

In einer Ausführungsform ist die elektrische Verbindung zwischen dem Stift und dem zweiten Pol der elektrischen Zündeinrichtung dauerhaft über das Kontaktblech verbunden. Dies geschieht vorzugsweise mit einer Kabelverbindung. Diese hat den Vorteil, dass die gesamte Anordnung toleranzlos die Funktion sicherstellt und eine Justierung der Kontaktfeder entfällt.In one embodiment, the electrical connection between the pin and the second pole of the electric ignition permanently on the contact plate connected. This is preferably done with a cable connection. This one has the Advantage that the entire arrangement ensures the function without tolerances and a Adjustment of the contact spring is eliminated.

Eine besondere Konstruktion sieht vor, dass im nicht gedrückten Zustand des Tasters und nach erfolgter Zündung der Stromlaufpfad zwischen dem Stift und dem Magnetventil unterbrochen ist. Dies hat den Vorteil, dass beim Loslassen des Tasters der Kontakt geöffnet wird, das Funkenband erlischt und die Zündsicherung in Funktion tritt.A special construction provides that in the not depressed state of the Tasters and after ignition of the circuit path between the pin and the Solenoid valve is interrupted. This has the advantage that when you release the Buttons the contact is opened, the spark plug goes out and the ignition fuse in Function occurs.

In einer bevorzugten Ausführungsform ist der Stift gegenüber dem Ventilgehäuse elektrisch isoliert geführt. Dadurch wird erreicht, dass der Stromlaufpfad nur geschlossen wird, wenn der Taster bis in seine Endposition gedrückt ist.In a preferred embodiment, the pin is opposite the valve housing electrically insulated. This ensures that the circuit path only is closed when the button is pressed to its end position.

Eine gute Isolierung des Stiftes zum Ventilgehäuse wird dadurch erreicht, dass der Federteller und/oder die Buchse der Stiftführung und/oder die Buchse des Ventils und/oder die Stiftführung und/oder das Ventil aus elektrisch isolierendem Werkstoff, vorzugsweise aus Kunststoff, ausgebildet sind.A good insulation of the pin to the valve body is achieved in that the Spring plate and / or the socket of the pin guide and / or the socket of the valve and / or the pin guide and / or the valve made of electrically insulating material, preferably made of plastic, are formed.

Eine bevorzugte Erfindungsvariante sieht vor, dass der Eingangswiderstand der elektrischen Zündeinrichtung hochohmig ausgelegt ist. Dies kann nötig sein, da eine ausreichende Haltekraft des Magneteinsatzes nur dann erreicht wird, wenn die Oberflächen des Elektromagneten und des Ankers sehr glatt sind. Diese glatten Oberflächen sind für einen elektrischen Kontakt ungünstig, da der Übergangswiderstand hoch sein kann. Mit dieser Erfindungsvariante ist sichergestellt, dass der Widerstand des Stromlaufpfades bei gedrücktem Taster immer klein gegenüber dem Eingangswiderstand der elektrischen Zündeinrichtung ist und dadurch der Spannungsabfall an der Kontaktstelle gering ist.A preferred variant of the invention provides that the input resistance of the electrical ignition device is designed high impedance. This may be necessary as a sufficient holding force of the magnetic insert is only achieved if the Surfaces of the electromagnet and the armature are very smooth. These smooth Surfaces are unfavorable for electrical contact, as the Contact resistance can be high. With this variant of the invention is ensured that the resistance of the current path while pressing the button is always small compared to the input resistance of the electrical ignition device and thereby the voltage drop at the contact point is low.

Zeichnungendrawings

Die Erfindung wird im folgenden anhand eines in den Figuren dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:

Fig. 1
eine Zündsicherung mit Magneteinsatz gemäß dem Stand der Technik
Fig. 2
eine Zündsicherung mit Magneteinsatz in der erfinderischen Ausgestaltung
The invention will be explained in more detail below with reference to an embodiment shown in FIGS. Show it:
Fig. 1
a Zündsicherung with magnetic insert according to the prior art
Fig. 2
a Zündsicherung with magnetic insert in the inventive design

Ausführungsbeispielembodiment

In Figur 1 ist eine thermoelektrische Zündsicherung 1, wie sie aus dem Stand der Technik bekannt ist, im Schnitt und in teils schematischer Darstellung gezeigt.FIG. 1 shows a thermoelectric ignition fuse 1, as is known from the prior art Technique is known, shown in section and partly schematic representation.

Die Zündsicherung 1 besteht aus einem Ventilgehäuse 80, welches einen Gaseinlass 81, einen Gasauslass 82 sowie einen Gasauslass 83 aufweist. Der Gasauslass 82 ist über eine Leitung mit einem Zündbrenner 120 einer Gasheizungseinrichtung verbunden. Der Gasauslass 83 ist mit einem Brenner 110 der Gasheizungseinrichtung, beispielsweise einer Gas-Warmwassertherme verbunden. Weiterhin weist die Zündsicherung 1 eine elektrische Zündeinrichtung 10 auf, die über einen Massekontakt 12 leitfähig mit dem Ventilgehäuse 80 verbunden ist. Die Zündeinrichtung 10 besitzt dabei eine Spannungsquelle 13, beispielsweise eine Batterie sowie eine hier nicht näher ausgeführte Zündelektronik, die im Zündbrenner 120 ein Zündfunkenband erzeugt, sobald die Zündeinrichtung 10 aktiviert ist.The ignition fuse 1 consists of a valve housing 80 which has a gas inlet 81, a gas outlet 82 and a gas outlet 83. Of the Gas outlet 82 is via a line with a pilot burner 120 a Gas heating device connected. The gas outlet 83 is provided with a burner 110 the gas heating device, for example a gas-fired hot water connected. Furthermore, the ignition fuse 1 an electric ignition device 10th on, via a ground contact 12 conductively connected to the valve housing 80 is. The ignition device 10 has a voltage source 13, for example a battery and a not detailed here ignition electronics, the Zündbrenner 120 generates a spark band when the ignition device 10th is activated.

Zur Aktivierung der Zündeinrichtung 10 besitzt die Zündsicherung 1 einen Taster 20, der mit einem Stift 30 verbunden ist. Der Stift 30 wird im Ventilgehäuse 80 mittels einer Stiftführung 40 geführt. Unterhalb des Tasters 20 befindet sich ein Kontaktblech 70, welches leitfähig mit dem Stift 30 verbunden ist. Das Kontaktblech 70 schließt beim Betätigen des Tasters 20 einen elektrischen Kontakt mit einer Kontaktfeder 11, welche mit dem zweiten Pol der elektrischen Zündeinrichtung 10 verbunden ist.To activate the ignition device 10, the ignition fuse 1 has a button 20, which is connected to a pin 30. The pin 30 is in the valve housing 80 by means a pin guide 40 out. Below the button 20 is a contact plate 70, which is conductively connected to the pin 30. The contact plate 70 closes upon actuation of the probe 20 makes electrical contact with a contact spring 11, which is connected to the second pole of the electrical ignition device 10.

Das Kontaktblech 70 wird mittels einer Feder 60, die sich gegenüber einem Ventil 100 abstützt, und auf einen auf dem Stift 30 montierten Federteller 50 drückt, in seiner Position gehalten. The contact plate 70 is by means of a spring 60 which is opposite to a valve 100 supports, and presses on a mounted on the pin 30 spring plate 50, in held his position.

Das Ventilgehäuse 80 besitzt am unteren Ende eine Aufnahme 84 für einen Magnetventileinsatz 90. Dieser besteht aus einem Magneteinsatz 93, der wiederum aus einem Elektromagneten 95 und aus einem Anker 94 besteht, die über eine starre Verbindung in Wirkverbindung mit einem Magnetventil 91 steht, welches im Ruhezustand eine Durchführung 85 im Ventilgehäuse 80 von unten abdichtet. Das Magnetventil 91 stützt sich dabei über eine Feder 92 vom Gehäuse des Magneteinsatzes 93 ab. Der Elektromagnet 95 besitzt eine hier nicht dargestellte Spule, die mit einem Thermoelement 150, das sich am Zündbrenner 120 befindet, elektrisch verbunden ist.The valve housing 80 has at the lower end a receptacle 84 for a Solenoid valve insert 90. This consists of a magnetic insert 93, in turn consists of an electromagnet 95 and an armature 94, which has a rigid Connection is in operative connection with a solenoid valve 91, which in Hibernation seals a passage 85 in the valve housing 80 from below. The Solenoid valve 91 is supported by a spring 92 from the housing of the magnetic insert 93 off. The solenoid 95 has a coil, not shown here, the with a thermocouple 150, which is located on the pilot burner 120, electrically connected is.

Bei Inbetriebnahme der Zündsicherung 1 muss der Taster 20 für ca. 10 Sekunden gedrückt werden. Dabei drückt der Stift 30 auf das Magnetventil 91, welches über die starre Verbindung den Anker 94 an den Elektromagnet 95 andrückt. Durch das Niederdrücken des Magnetventils 91 wird erreicht, dass das durch den Gaseinlass 81 einströmende Gas über den Gasauslass 82 zum Zündbrenner 120 gelangen kann. Das Ventil 100 dichtet dabei die Durchführung 85 von oben ab, so dass zunächst kein Gas durch den Gasauslass 83 zum Brenner 110 gelangen kann. Weiterhin wird der Kontakt zwischen der Kontaktfeder 11 der elektrischen Zündeinrichtung 10 und dem Kontaktblech 70 geschlossen, so dass ein Stromlaufpfad 130 über die Kontaktfeder 11, das Kontaktblech 70, den Stift 30, die Stiftführung 40, das Ventilgehäuse 80 und über den Massekontakt 12 zur Spannungsquelle 13 der elektrischen Zündeinrichtung 10 entsteht. Dadurch wird über die Zündeinrichtung 10 ein Zündfunkenband am Zündbrenner 120 erzeugt, welches eine Zündflamme zündet. Die Zündflamme beheizt dabei das Thermoelement 150, welches einen Thermostrom erzeugt, welcher wiederum im Elektromagneten 95 eine Magnetkraft erzeugt, die den Anker 94 anzieht. When the ignition fuse 1 is put into operation, the button 20 must be pressed for approx. 10 seconds be pressed. The pin 30 presses on the solenoid valve 91, which over the rigid connection presses the armature 94 to the solenoid 95. By the Depressing the solenoid valve 91 is achieved that through the gas inlet Enter 81 incoming gas via the gas outlet 82 to the pilot burner 120 can. The valve 100 seals the passage 85 from above, so that initially no gas can pass through the gas outlet 83 to the burner 110. Furthermore, the contact between the contact spring 11 of the electric Ignition device 10 and the contact plate 70 is closed, so that a Stromlaufpfad 130 via the contact spring 11, the contact plate 70, the pin 30, the Pin guide 40, the valve housing 80 and the ground contact 12 to Voltage source 13 of the electrical ignition device 10 is formed. This will generates a spark band on the pilot burner 120 via the ignition device 10, which ignites a pilot flame. The pilot flame heats the Thermocouple 150, which generates a thermal current, which in turn Electromagnet 95 generates a magnetic force that attracts the armature 94.

Beim Loslassen des Tasters 20 bleibt nach erfolgter Zündung des Zündbrenners 120 das Magnetventil 91 geöffnet. Der Taster 20 geht zusammen mit dem Kontaktblech 70, durch die Federkraft der Feder 60 in die Ausgangsstellung zurück und unterbricht dabei den Kontakt zwischen dem Kontaktblech 70 und der Kontaktfeder 11. Gleichzeitig öffnet das Ventil 100 die Durchführung 85 und gibt somit den Gasfluss durch den Gasauslass 83 zum Brenner 110 frei.Upon release of the button 20 remains after ignition of the pilot burner 120th the solenoid valve 91 is opened. The button 20 goes together with the contact plate 70, by the spring force of the spring 60 back to the starting position and interrupts doing the contact between the contact plate 70 and the contact spring 11th At the same time, the valve 100 opens the passage 85 and thus gives the gas flow through the gas outlet 83 to the burner 110 free.

Bei dieser aus dem Stand der Technik bekannten Anordnung muss aus Toleranzgründen sichergestellt werden, dass der Kontakt zur elektrischen Zündeinrichtung 10 ca. 1 bis 3 mm, bevor der Anker 94 am Elektromagneten 95 anliegt, geschlossen wird. In der Praxis hat sich gezeigt, dass dadurch trotz des hörbaren und sichtbaren Funkenbandes und des gleichzeitigen Kraftanstiegs infolge der Kontaktfeder 11 der Anker 94 nicht am Elektromagneten 95 gehalten wird. Dadurch kommt es vor, dass beim Loslassen des Tasters 20 das Magnetventil 91 infolge des Abstandes zwischen Anker 94 und Elektromagneten 95 nicht im geöffneten Zustand gehalten wird und daher der Gaszustrom zum Zündbrenner 120 trotz erfolgter Zündung wieder unterbrochen wird. Dieser Bedienfehler führt zu Beanstandungen der Zündsicherung 1.In this known from the prior art arrangement must from Tolerance reasons ensure that the contact with the electrical Ignition device 10 about 1 to 3 mm, before the armature 94 on the electromagnet 95th is closed, closed. In practice, it has been shown that in spite of the Audible and visible spark band and the simultaneous increase in force due the contact spring 11 of the armature 94 is not held on the electromagnet 95. As a result, when releasing the button 20, the solenoid valve 91 due to the distance between armature 94 and electromagnet 95 not in is kept open state and therefore the gas flow to the pilot burner 120th is interrupted again despite the ignition. This operating error leads to Complaints about the safety device 1.

Figur 2 zeigt eine Zündsicherung 1 in erfinderischer Ausgestaltung.FIG. 2 shows an ignition fuse 1 in an inventive design.

Gegenüber der in Figur 1 dargestellten Zündsicherung 1 ist bei gedrücktem Taster 20 ein Stromlaufpfad 130 von dem Massekontakt 12 der elektrischen Zündeinrichtung 10 ausgehend über das Ventilgehäuse 80, den Magnetventileinsatz 90 und den Stift 30 ausgebildet. Hierbei ist der Stift 30 dauerhaft elektrisch - im gezeigten Ausführungsbeispiel mittels einer Kabelverbindung 140 - zwischen dem Kontaktblech 70, welches leitfähig auf dem Stift 30 aufsitzt, und dem zweiten Pol der elektrischen Zündeinrichtung 10 verbunden.Compared with the ignition fuse 1 shown in Figure 1 is pressed button 20 is a circuit path 130 from the ground contact 12 of the electrical Ignition device 10, starting via the valve housing 80, the solenoid valve insert 90 and the pin 30 is formed. Here, the pin 30 is permanently electric - im shown embodiment by means of a cable connection 140 - between the Contact plate 70, which is conductively mounted on the pin 30, and the second pole of the electrical ignition device 10 is connected.

Gemäß der Erfindung wird beim Betätigen des Tasters 20 erst der Stromlaufpfad 130 geschlossen, wenn zwischen Elektromagneten 95 und dem Anker 94 des Magneteinsatzes 90 ein elektrischer Kontakt hergestellt ist. Dabei steht der Stift 30 im gedrückten Zustand elektrisch leitfähig über das Magnetventil 91 mit dem Anker 94 in Kontakt.According to the invention, when the pushbutton 20 is actuated, only the current-carrying path 130 becomes closed when between electromagnet 95 and the armature 94 of the Magnetic insert 90 an electrical contact is made. This is the pin 30 in the depressed state electrically conductive via the solenoid valve 91 with the armature 94 in contact.

Der Stift 30 ist bei dieser Anordnung gegenüber dem Ventilgehäuse 80 elektrisch isoliert geführt. Dazu ist der Federteller 50 aus einem elektrisch isolierenden Werkstoff, beispielsweise aus Kunststoff, ausgebildet. Ein elektrischer Kontakt über die Feder 60 zum Ventilgehäuse 80 wird dadurch verhindert. Weiterhin weist die zur Führung des Stiftes 30 dienenden Stiftführung 40 eine Buchse 41 auf, die ebenfalls aus einem isolierenden Werkstoff, vorzugsweise aus Kunststoff, ausgebildet ist. Auch das Ventil 100 weist in der gezeigten Ausführungsform eine Buchse 101 auf, die den Stift 30 gegenüber dem Ventilgehäuse 80 isoliert.The pin 30 is in this arrangement with respect to the valve housing 80 electrically isolated. For this purpose, the spring plate 50 is made of an electrically insulating Material, for example made of plastic, formed. An electrical contact via the spring 60 to the valve housing 80 is thereby prevented. Furthermore, the Guide the pin 30 serving pin guide 40 a socket 41, which also is formed of an insulating material, preferably of plastic. The valve 100 also has a bush 101 in the embodiment shown, which isolates the pin 30 from the valve housing 80.

Nach erfolgter Zündung wird beim Loslassen des Tasters 20 der Stromlaufpfad 130 zwischen dem Stift 30 und dem Magnetventil 91 unterbrochen, da der Anker 94 infolge der durch den Thermostrom erzeugten Magnetkraft des Elektromagneten 95 gehalten wird. Es ist damit sichergestellt, dass das Magnetventil 91 weiterhin offen bleibt und damit der Zündbrenner 120 und der Brenner 110 mit Gas versorgt werden.After ignition, when you release the button 20 of the current path 130th between the pin 30 and the solenoid valve 91 interrupted because the armature 94th due to the magnetic force of the electromagnet 95 generated by the thermo-current is held. It is thus ensured that the solenoid valve 91 remains open remains and thus the pilot burner 120 and the burner 110 are supplied with gas.

In einer weiteren Ausgestaltung kann vorgesehen sein, dass die elektrische Zündeinrichtung 10 hochohmig ausgelegt ist, was insbesondere dann erforderlich sein kann, wenn zur Erreichung einer höheren Haltekraft die Oberflächen des Elektromagneten 95 und des Ankers 94 sehr glatt, beispielsweise geläppt ausgebildet sind und sich dadurch möglicherweise größere Übergangswiderstände ergeben. Damit ist sichergestellt, dass der Widerstand des Stromlaufpfades 130 bei gedrücktem Taster 20 immer klein gegenüber dem Eingangswiderstand der elektrischen Zündeinrichtung 10 ist.In a further embodiment it can be provided that the electrical Ignition 10 is designed high impedance, which is particularly necessary can be, if to achieve a higher holding power the surfaces of Electromagnet 95 and the anchor 94 very smooth, for example, lapped are formed and thereby possibly greater contact resistance result. This ensures that the resistance of the current path 130 at pressed button 20 always small compared to the input resistance of the electric ignition device 10 is.

Es kann auch vorgesehen sein, dass der Elektromagnet 95 und der Anker 94 besondere Kontaktflächen aufweisen, beispielsweise in Form von sehr gut leitfähigen Metallflächen und/oder in Form von rauhen Oberflächen, die bei Berührung einen sehr niederohmigen elektrischen Kontakt ergeben.It can also be provided that the electromagnet 95 and the armature 94 have special contact surfaces, for example in the form of very good conductive Metal surfaces and / or in the form of rough surfaces that touch one result in very low-resistance electrical contact.

In dieser Ausführungsform der Zündsicherung 1 ist erreicht, dass die Kontaktstelle zum Schliessen des Stromlaufpfades 130 räumlich von der Kontaktstelle zum Öffnen des Stromlaufpfades 130 getrennt ist.In this embodiment, the ignition fuse 1 is achieved that the contact point to close the current path 130 spatially from the contact point to open of the current path 130 is disconnected.

In bevorzugter Ausgestaltung können weitgehend bestehende Komponenten einer vorhandenen Zündsicherung 1 weiter verwendet werden, was aufwändige Änderungen in der Konstruktion vermeiden hilft. Weiterhin entfallen bei der erfindungsgemäßen Ausgestaltung aufwändige Justagearbeiten.In a preferred embodiment, largely existing components of a existing Zündsicherung 1 continue to be used, which costly changes helps avoid in the construction. Continue to be omitted in the inventive design elaborate adjustment work.

Claims (9)

Thermoelektrische Zündsicherung (1) mit einem Ventilgehäuse (80) und einem Taster (20), der über einen Stift (30) auf ein Magnetventil (91) eines Magnetventileinsatzes (90) wirkt, wobei das Magnetventil (91) in Wirkverbindung mit einem Anker (94) steht, die im gedrückten Zustand des Tasters (20) im Kontakt mit einem Elektromagneten (95) steht, und wobei die Zündsicherung (1) eine elektrische Zündeinrichtung (10) aufweist, die mit mindestens einem Massekontakt (12) elektrisch leitend mit dem Ventilgehäuse (80) verbunden ist,
dadurch gekennzeichnet, dass bei gedrücktem Taster (20) ein Stromlaufpfad (130) von dem Massekontakt (12) der elektrischen Zündeinrichtung (10) ausgehend über das Ventilgehäuse (80), den Magnetventileinsatz (90) und den Stift (30) gebildet ist, wobei der Stift (30) elektrisch mit dem zweiten Pol der elektrischen Zündeinrichtung (10) verbunden ist.Thermoelectric ignition fuse (1) having a valve housing (80) and a push-button (20) which acts via a pin (30) on a solenoid valve (91) of a solenoid valve insert (90), the solenoid valve (91) being in operative connection with an armature (90). 94), which is in contact with an electromagnet (95) in the depressed state of the button (20), and wherein the ignition fuse (1) has an electrical ignition device (10) which is electrically conductively connected to at least one ground contact (12) Valve housing (80) is connected,
characterized in that when the push button (20) a Stromlaufpfad (130) of the ground contact (12) of the electrical ignition device (10) starting via the valve housing (80), the solenoid valve insert (90) and the pin (30) is formed, wherein the pin (30) is electrically connected to the second pole of the electrical ignition device (10). Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass ein elektrischer Kontakt zum Schließen eines Stromlaufpfades (130) der elektrischen Zündeinrichtung (10) zwischen dem Elektromagneten (95) und dem Anker (94) des Magnetventileinsatzes (90) ausgebildet ist.Device according to claim 1,
characterized in that an electrical contact for closing a current path (130) of the electrical ignition device (10) is formed between the electromagnet (95) and the armature (94) of the solenoid valve insert (90). Vorrichtung nach einem der Ansprüche 1 oder 2,
dadurch gekennzeichnet, dass die elektrische Verbindung zwischen dem Stift (30) und dem zweiten Pol der elektrischen Zündeinrichtung (10) dauerhaft über ein Kontaktblech (70) verbunden ist, vorzugsweise mit einer Kabelverbindung (140).Device according to one of claims 1 or 2,
characterized in that the electrical connection between the pin (30) and the second pole of the electrical ignition device (10) is permanently connected via a contact plate (70), preferably with a cable connection (140). Vorrichtung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass der Stift (30) im gedrückten Zustand elektrisch leitfähig über das Magnetventil (91) mit dem Anker (94) in Kontakt steht.Device according to one of claims 1 to 3,
characterized in that the pin (30) in the depressed state is electrically conductive via the solenoid valve (91) with the armature (94) in contact. Vorrichtung nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass im nicht gedrückten Zustand des Tasters (20) und nach erfolgter Zündung der Stromlaufpfad (130) zwischen dem Stift (30) und dem Magnetventil (91) unterbrochen ist.Device according to one of claims 1 to 4,
characterized in that in the non-depressed state of the button (20) and after ignition of the current flow path (130) between the pin (30) and the solenoid valve (91) is interrupted. Vorrichtung nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass der Stift (30) gegenüber dem Ventilgehäuse (80) elektrisch isoliert geführt ist.Device according to one of claims 1 to 5,
characterized in that the pin (30) relative to the valve housing (80) is guided electrically isolated. Vorrichtung nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass ein Federteller (50) aus einem elektrisch isolierenden Werkstoff, vorzugsweise aus Kunststoff, ausgebildet ist.Device according to one of claims 1 to 6,
characterized in that a spring plate (50) made of an electrically insulating material, preferably made of plastic, is formed. Vorrichtung nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass eine Buchse (41) einer Stiftführung (40) und/oder eine Buchse (101) eines Ventils (100) und/oder die Stiftführung (40) und/oder das Ventil (100) aus elektrisch isolierendem Werkstoff, vorzugsweise aus Kunststoff, ausgebildet sind.Device according to one of claims 1 to 6,
characterized in that a bush (41) of a pin guide (40) and / or a bushing (101) of a valve (100) and / or the pin guide (40) and / or the valve (100) of electrically insulating material, preferably made of Plastic, are formed. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass der Eingangswiderstand der elektrischen Zündeinrichtung (10) hochohmig ausgelegt ist.Device according to claim 1,
characterized in that the input resistance of the electrical ignition device (10) is designed high impedance.
EP04008590A 2003-04-11 2004-04-08 Security arrangement for ignition device Expired - Lifetime EP1467150B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10316642A DE10316642B4 (en) 2003-04-11 2003-04-11 safety pilot
DE10316642 2003-04-11

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EP1467150A2 true EP1467150A2 (en) 2004-10-13
EP1467150A3 EP1467150A3 (en) 2011-01-26
EP1467150B1 EP1467150B1 (en) 2012-12-26

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Application Number Title Priority Date Filing Date
EP04008590A Expired - Lifetime EP1467150B1 (en) 2003-04-11 2004-04-08 Security arrangement for ignition device

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EP (1) EP1467150B1 (en)
DE (1) DE10316642B4 (en)
ES (1) ES2402093T3 (en)
PT (1) PT1467150E (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT508263B1 (en) 2009-11-09 2010-12-15 Anstoss Regelgeraete Ges M B H VALVE DEVICE AND METHOD FOR THERMOELECTRIC IGNITION PROTECTION FOR GAS-OPERATED DEVICES

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2290048A (en) * 1938-12-12 1942-07-14 Milwaukee Gas Specialty Co Safety device for heating and other apparatus
FR68517E (en) * 1955-08-29 1958-05-02 Bosch Gmbh Robert Gas appliance, in particular gas stove with magnetic igniter
DE1256176B (en) * 1965-09-18 1967-12-14 Vaillant Joh Kg Thermoelectric fuse, especially for circulation gas water heaters
CH456826A (en) * 1966-12-03 1968-05-31 Beteiligungs & Patentverw Gmbh Ignition device for gas burners

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT301119B (en) * 1970-01-28 1972-08-25 Vaillant Joh Kg Thermoelectric ignition fuse, especially for circulating gas water heaters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2290048A (en) * 1938-12-12 1942-07-14 Milwaukee Gas Specialty Co Safety device for heating and other apparatus
FR68517E (en) * 1955-08-29 1958-05-02 Bosch Gmbh Robert Gas appliance, in particular gas stove with magnetic igniter
DE1256176B (en) * 1965-09-18 1967-12-14 Vaillant Joh Kg Thermoelectric fuse, especially for circulation gas water heaters
CH456826A (en) * 1966-12-03 1968-05-31 Beteiligungs & Patentverw Gmbh Ignition device for gas burners

Also Published As

Publication number Publication date
PT1467150E (en) 2013-02-11
DE10316642B4 (en) 2005-03-31
EP1467150B1 (en) 2012-12-26
EP1467150A3 (en) 2011-01-26
DE10316642A1 (en) 2004-11-11
ES2402093T3 (en) 2013-04-26

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