EP0067186B1 - Ignition and surveyance device for a heat source with fuel heating - Google Patents

Ignition and surveyance device for a heat source with fuel heating Download PDF

Info

Publication number
EP0067186B1
EP0067186B1 EP82900091A EP82900091A EP0067186B1 EP 0067186 B1 EP0067186 B1 EP 0067186B1 EP 82900091 A EP82900091 A EP 82900091A EP 82900091 A EP82900091 A EP 82900091A EP 0067186 B1 EP0067186 B1 EP 0067186B1
Authority
EP
European Patent Office
Prior art keywords
valve
ignition
igniting
contact
fuel 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.)
Expired
Application number
EP82900091A
Other languages
German (de)
French (fr)
Other versions
EP0067186A1 (en
Inventor
Ulrich Ortlinghaus
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.)
SCHONEWELLE BV
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
SCHONEWELLE BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vaillant Austria GmbH, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, SCHONEWELLE BV filed Critical Vaillant Austria GmbH
Priority to AT82900091T priority Critical patent/ATE7533T1/en
Publication of EP0067186A1 publication Critical patent/EP0067186A1/en
Application granted granted Critical
Publication of EP0067186B1 publication Critical patent/EP0067186B1/en
Expired legal-status Critical Current

Links

Images

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
    • F23N1/00—Regulating fuel supply
    • F23N1/005—Regulating fuel supply 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
    • F23N5/02—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

Definitions

  • the present invention relates to an ignition and monitoring device according to the preamble of the main claim.
  • thermoelectric ignition fuses both for fuel-heated heat sources working with and without mains voltage, in particular gas-heated water heaters (see, for example, FR-A-2 125 856 and DE-A-1 551 966). It is assumed that regardless of the support with mains voltage, the pilot burner's pilot flame burns regularly during the main burner's pauses.
  • the present invention is therefore based on the object of providing an ignition and monitoring device with the support of a supply voltage source which can also be used manually independently of the operation of the supply voltage source.
  • the technical progress that can be achieved in this way is that the user can use the heat source even if the mains voltage fails, while there is no impairment of usability when the supply voltage source is present.
  • a fuel-heated heat source not shown, whether it is a gas or oil-fired boiler, circulating water heater or continuous water heater, has a main burner 1, which is controlled by a main fuel valve 2, the actuating rod 3 of which is actuated by a heat demand switch 4 controlled by a consumer of the heat source.
  • the heat demand switch can either be a room thermostat, i.e. the actuator of a room temperature sensor, or a water switch which is acted upon by the water flowing through in a continuous-flow heater after the start of the tap or in a circulating water heater after a pump has responded.
  • An extension of the rod 3 leads to a changeover switch 5.
  • the main fuel valve 2 is located in the course of a fuel line 6, which is controlled by an ignition safety valve 8 in the area of the input 7 of the heat source and from which a pilot fuel line 9 branches off, which splits into a line branch 10 and 11, which are jointly connected to a pilot burner 12 .
  • a solenoid valve 13 is provided which can be actuated by a solenoid coil 14, which can be supplied with voltage via a line 15. The solenoid valve 13 is closed when the excitation coil 14 is de-energized.
  • a manual valve 17 which can be actuated by a handle 16 is provided, with the valve or the handle being assigned a normally closed contact 18 which is provided in the course of a line 19 which leads to the pole R of a mains supply voltage source with the other pole Mp.
  • thermocouple 20 which is connected via lines 21 and 22 to an electromagnet 23 of the thermoelectric ignition fuse.
  • thermoelectric ignition fuse also has an armature 24 which is connected to an actuating rod 25 to which the valve body of the valve 8 is also articulated.
  • a handle 26 or a normally closed contact 27 is connected to the rod 25 and is provided in the course of the line 19, in series with the normally closed contact 18.
  • the ignition safety valve 8 is, as usual, under tension so that the valve 8 is closed in the idle state.
  • the ignition valve 17 can be opened as well as closed in the idle state.
  • the line 19 continues behind the contact 27 and leads to the changeover switch 5.
  • the changeover switch has two contacts, one of which is connected to a line 28 in the idle state and to another line 29 in the working state.
  • An excitation coil 31 of a relay 32 provided with two changeover contacts and a further excitation coil 33 of a relay 34 are connected to the line 28 via a line 30, the latter relay having a normally open contact 35, the release time of which is delayed.
  • Another line 36 leads to the make contact of the one switch of the relay 32.
  • the base of the make contact 35 is connected via a line 37 to the base of the changeover contact 38 of the relay 32.
  • the line 37 is connected via the normally open contact 38 to a line 39 which leads to the primary side of an ignition transformer 40.
  • the secondary side of the ignition transformer leads via line 41 to an ignition electrode 42, which is assigned to the pilot burner 12.
  • a line 43 branches off from the line 39 and is connected to the normally closed contact 44 of the relay 32, in the idle state of the relay 32 the line 43 is connected to a line 45 which leads to a thermosimulation voltage element 46. From the thermal simulation element 46 lead two lines 47 and 48 to the ignition fuse, line 47 is connected to line 22, line 48 to line 21.
  • the other pole Mp of the supply voltage source is grounded, accordingly the excitation coil 14 in the ignition gas path, the thermal voltage simulation element 46, the excitation coil 31 and 33 and the ignition transformer are also grounded on one side.
  • the circuit just described has the following function: starting from the idle state shown in the circuit, that is to say when there is no current, the normally closed contact 18 is closed, but the normally open contact 27 of the ignition fuse is open. The supply voltage source is thus disconnected from the changeover switch 5. All relays are de-energized. The main fuel valve 2 and both pilot gas valves are closed. If the handle 16 is actuated in this state, the ignition gas valve 17 opens, but its opening remains ineffective because of the closed state of the ignition safety valve 8.
  • the relay coil 31 Since the line 28 is now dead, the relay coil 31 is switched off, so that the changeover contact 44 and the working con. Clock 38 go into the rest position without delay, but the normally open contact 35 is still subject to the dropout delay of the relay 34.
  • the supply voltage is connected to the ignition transformer 40 via the lines 29, 37 and 39, so that the fuel escaping from the pilot burner 12 via the Ignition electrode 42 is ignited.
  • the thermocouple 20 is heated and takes over the supply of the electromagnet 23. Its supply ends after the end of the drop-out delay of the relay 34, since with the switching back of the contact 35 the line 45 is no longer under supply voltage and thus the thermocurrent simulation element 46 is no longer supplied with voltage. If the ignition of the pilot burner 12 does not succeed, the ignition safety valve 8 closes when the delay in decay of the relay 34 expires.
  • thermocouple 20 is interrupted after the cooling time has elapsed, and the thermocouple is simulated again via contacts 35 and 44 is taken over.
  • the variant of the invention according to the figure two is that the branching of the pilot fuel line 9 is omitted, rather the handle 16 works directly on the valve body of the solenoid valve 13. Operating the handle 16 causes the pilot gas solenoid valve 13 to lock in the open position, so that the same function as in the embodiment according to FIG. 1 results. There is an advantage in terms of cost, since the branching in the pilot fuel path and the manually operated valve 17 are saved.

Abstract

Ignition and surveyance device for a heat source with fuel heating comprising a thermo electric security device (8) which may be inserted manually, having a thermo element (20) heated by a pilot (12) supplied with fuel through a first valve (13), and a main valve (2) for the fuel supplied to the main burner. An ignition generator (40) and a thermal current simulation element (46) are connected to a voltage supply source, while a second valve (17) for the ignition fuel, manually operable (16), is mounted in parallel to the first valve (13). The manual control (16) of said second valve (17) is provided with a contact (18) disconnectable from the voltage supply source (R, Mp).

Description

Die vorliegende Erfindung bezieht sich auf eine Zünd- und Überwachungseinrichtung gemäß dem Oberbegriff des Hauptanspruchs.The present invention relates to an ignition and monitoring device according to the preamble of the main claim.

Es sind Zünd- und Überwachungseinrichtungen als reine thermoelektrische Zündsicherungen bekanntgeworden sowohl für mit als auch ohne Netzspannung arbeitende brennstoffbeheizte Wärmequellen, insbesondere gasbeheizte Wasserheizer (siehe z. B. FR-A-2 125 856 und DE-A-1 551 966). Hierbei wird davon ausgegangen, daß unabhängig von der Unterstützung mit Netzspannung die Zündflamme des Zündbrenners regelmäßig in den Ruhepausen des Hauptbrenners brennt.Ignition and monitoring devices have become known as pure thermoelectric ignition fuses both for fuel-heated heat sources working with and without mains voltage, in particular gas-heated water heaters (see, for example, FR-A-2 125 856 and DE-A-1 551 966). It is assumed that regardless of the support with mains voltage, the pilot burner's pilot flame burns regularly during the main burner's pauses.

Der vorliegenden Erfindung liegt mithin die Aufgabe zugrunde, eine Zünd- und Überwachungseinrichtung mit Unterstützung durch eine Speisespannungsquelle zu schaffen, die auch manuell unabhängig von dem Betrieb der Speisespannungsquelle einsetzbar ist.The present invention is therefore based on the object of providing an ignition and monitoring device with the support of a supply voltage source which can also be used manually independently of the operation of the supply voltage source.

Die Lösung dieser Aufgabe gelingt mit den kennzeichnenden Merkmalen der nebengeordneten Ansprüche.This problem is solved with the characteristic features of the subordinate claims.

Der hiermit erreichbare technische Fortschritt liegt darin, daß der Benutzer die Wärmequelle auch bei Ausfall der Netzspannung benutzen kann, während eine Beeinträchtigung der Benutzbarkeit bei vorhandener Speisespannungsquelle nicht vorhanden ist.The technical progress that can be achieved in this way is that the user can use the heat source even if the mains voltage fails, while there is no impairment of usability when the supply voltage source is present.

Weitere Ausgestaltungen und besonders vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche sowie der nachfolgenden Beschreibung, die anhand der Zeichnungen Ausführungsbeispiele der Erfindung näher erläutert. Es zeigt

  • Fig. 1 eine schematische Darstellung einer erfindungsgemäßen Zünd- und Überwachungseinrichtung, und
  • Fig. 2 eine Variante der Erfindung.
Further refinements and particularly advantageous developments of the invention are the subject of the subclaims and the following description, which uses the drawings to explain exemplary embodiments of the invention. It shows
  • Fig. 1 is a schematic representation of an ignition and monitoring device according to the invention, and
  • Fig. 2 shows a variant of the invention.

In beiden Figuren bedeuten gleiche Bezugszeichen jeweils die gleichen Einzelheiten.In both figures, the same reference numerals denote the same details.

Eine nicht weiter dargestellte brennstoffbeheizte Wärmequelle, sei es ein gas- oder ölbeheizter Kessel, Umlaufwasserheizer oder Durchlaufwasserheizer, weist einen Hauptbrenner 1 auf, der von einem Hauptbrennstoffventil 2 beherrscht ist, dessen Betätigungsstange 3 von einem Verbraucher der Wärmequelle gesteuerten Wärmebedarfsschalter 4 betätigt ist. Der Wärmebedarfsschalter kann entweder ein Raumthermostat sein, also das Stellglied eines Raumtemperaturfühlers, oder ein Wasserschalter, der bei einem Durchlauferhitzer nach Zapfbeginn beziehungsweise bei einem Umlaufwasserheizer nach dem Ansprechen einer Pumpe vom durchfließenden Wasser beaufschlagt ist. Eine Verlängerung der Stange 3 führt zu einem Umschalter 5.A fuel-heated heat source, not shown, whether it is a gas or oil-fired boiler, circulating water heater or continuous water heater, has a main burner 1, which is controlled by a main fuel valve 2, the actuating rod 3 of which is actuated by a heat demand switch 4 controlled by a consumer of the heat source. The heat demand switch can either be a room thermostat, i.e. the actuator of a room temperature sensor, or a water switch which is acted upon by the water flowing through in a continuous-flow heater after the start of the tap or in a circulating water heater after a pump has responded. An extension of the rod 3 leads to a changeover switch 5.

Das Hauptbrennstoffventil 2 liegt im Zuge einer Brennstoffleitung 6, die im Bereich des Eingangs 7 der Wärmequelle von einem Zündsicherungsventil 8 beherrscht ist und von der eine Zündbrennstoffleitung 9 abzweigt, die sich in eine Leitungsverzweigung 10 und 11 aufspaltet, die gemeinsam an einen Zündbrenner 12 angeschlossen sind. Im Zuge des Zündbrennstoffleitungszweiges 10 ist ein Magnetventil 13 vorgesehen, das von einer Magnetspule 14 betätigbar ist, die über eine Leitung 15 mit Spannung beaufschlagt werden kann. Das Magnetventil 13 ist bei Spannungslosigkeit der Erregungsspule 14 geschlossen. Im Zuge der Leitung 11 ist ein von einer Handhabe 16 betätigbares Handventil 17 vorgesehen, wobei dem Ventil oder der Handhabe ein Ruhekontakt 18 zugeordnet ist, der im Zuge einer Leitung 19 vorgesehen ist, die zum Pol R einer Netzspeisespannungsquelle mit dem anderen Pol Mp führt.The main fuel valve 2 is located in the course of a fuel line 6, which is controlled by an ignition safety valve 8 in the area of the input 7 of the heat source and from which a pilot fuel line 9 branches off, which splits into a line branch 10 and 11, which are jointly connected to a pilot burner 12 . In the course of the pilot fuel line branch 10, a solenoid valve 13 is provided which can be actuated by a solenoid coil 14, which can be supplied with voltage via a line 15. The solenoid valve 13 is closed when the excitation coil 14 is de-energized. In the course of the line 11, a manual valve 17 which can be actuated by a handle 16 is provided, with the valve or the handle being assigned a normally closed contact 18 which is provided in the course of a line 19 which leads to the pole R of a mains supply voltage source with the other pole Mp.

Sowohl dem Hauptbrenner 1 als auch dem Zündbrenner 12 ist ein Thermoelement 20 zugeordnet, das über Leitungen 21 und 22 mit einem Elektromagneten 23 der thermoelektrischen Zündsicherung verbunden ist. Die thermoelektrische Zündsicherung weist schließlich noch einen Anker 24 auf, der mit einer Betätigungsstange 25 verbunden ist, an der auch der Ventilkörper des Ventils 8 angelenkt ist. Mit der Stange 25 ist eine Handhabe 26 beziehungsweise ein Ruhekontakt 27 verbunden, der im Zuge der Leitung 19, und zwar in Serie, zu dem Ruhekontakt 18, vorgesehen ist. Das Zündsicherungsventil 8 steht wie üblich unter Vorspannung, so daß im Ruhezustand das Ventil 8 geschlossen ist. Das Zündventil 17 kann sowohl im Ruhezustand geöffnet als auch geschlossen sein.Both the main burner 1 and the pilot burner 12 are assigned a thermocouple 20 which is connected via lines 21 and 22 to an electromagnet 23 of the thermoelectric ignition fuse. Finally, the thermoelectric ignition fuse also has an armature 24 which is connected to an actuating rod 25 to which the valve body of the valve 8 is also articulated. A handle 26 or a normally closed contact 27 is connected to the rod 25 and is provided in the course of the line 19, in series with the normally closed contact 18. The ignition safety valve 8 is, as usual, under tension so that the valve 8 is closed in the idle state. The ignition valve 17 can be opened as well as closed in the idle state.

Die Leitung 19 setzt sich hinter dem Kontakt 27 fort und führt zu dem Umschalter 5. Der Umschalter weist zwei Kontakte auf, von denen der eine im Ruhezustand mit einer Leitung 28 und im Arbeitszustand mit einer anderen Leitung 29 verbunden ist. An die Leitung 28 ist über eine Leitung 30 eine Erregerspule 31 eines mit zwei Umschaltkontakten versehenen Relais 32 sowie eine weitere Erregerspule 33 eines Relais 34 angeschlossen, wobei das letztere Relais einen Arbeitskontakt 35 aufweist, dessen Abfallzeit verzögert ist. Eine weitere Leitung 36 führt zu dem Arbeitskontakt des einen Umschalters des Relais 32. Der Fußpunkt des Arbeitskontaktes 35 ist über eine Leitung 37 mit dem Fußpunkt des Umschaltkontaktes 38 des Relais 32 verbunden. Im Ruhezustand des Relais 32, also bei nicht erregter Relaisspule 31, ist die Leitung 37 über den Arbeitskontakt 38 mit einer Leitung 39 verbunden, die zur Primärseite eines Zündtransformators 40 führt. Die Sekundärseite des Zündtransformators führt über eine Leitung 41 zu einer Zündelektrode 42, die dem Zündbrenner 12 zugeordnet ist. Von der Leitung 39 zweigt eine Leitung 43 ab, die mit dem Ruhekontakt 44 des Relais 32 verbunden ist, im Ruhezustand des Relais 32 ist die Leitung 43 mit einer Leitung 45 verbunden, die zu einem Thermosimulationsspannungsglied 46 führt. Vom Thermosimulationsglied 46 führen zwei Leitungen 47 und 48 zur Zündsicherung, die Leitung 47 ist mit der Leitung 22, die Leitung 48 mit der Leitung 21 verbunden.The line 19 continues behind the contact 27 and leads to the changeover switch 5. The changeover switch has two contacts, one of which is connected to a line 28 in the idle state and to another line 29 in the working state. An excitation coil 31 of a relay 32 provided with two changeover contacts and a further excitation coil 33 of a relay 34 are connected to the line 28 via a line 30, the latter relay having a normally open contact 35, the release time of which is delayed. Another line 36 leads to the make contact of the one switch of the relay 32. The base of the make contact 35 is connected via a line 37 to the base of the changeover contact 38 of the relay 32. In the idle state of the relay 32, that is to say when the relay coil 31 is not energized, the line 37 is connected via the normally open contact 38 to a line 39 which leads to the primary side of an ignition transformer 40. The secondary side of the ignition transformer leads via line 41 to an ignition electrode 42, which is assigned to the pilot burner 12. A line 43 branches off from the line 39 and is connected to the normally closed contact 44 of the relay 32, in the idle state of the relay 32 the line 43 is connected to a line 45 which leads to a thermosimulation voltage element 46. From the thermal simulation element 46 lead two lines 47 and 48 to the ignition fuse, line 47 is connected to line 22, line 48 to line 21.

Der andere Pol Mp der Speisespannungsquelle ist an Masse gelegt, demgemäß sind die Erregerspule 14 im Zündgasweg, das Thermospannungssimulationsglied 46, die Erregerspule 31 und 33 und der Zündtransformator gleichfalls einseitig an Masse gelegt.The other pole Mp of the supply voltage source is grounded, accordingly the excitation coil 14 in the ignition gas path, the thermal voltage simulation element 46, the excitation coil 31 and 33 and the ignition transformer are also grounded on one side.

Die eben beschriebene Schaltung weist folgende Funktion auf: Ausgehend von dem in der Schaltung dargestellten Ruhezustand, das heißt bei Stromlosigkeit, ist zwar der Ruhekontakt 18 geschlossen, der Arbeitskontakt 27 der Zündsicherung jedoch geöffnet. Damit ist die Speisespannungsquelle vom Umschalter 5 abgetrennt. Alle Relais sind stromlos. Das Hauptbrennstoffventil 2 und beide Zündgasventile sind geschlossen. Wird in diesem Zustand die Handhabe 16 betätigt, so öffnet zwar das Zündgasventil 17, dessen Öffnen bleibt aber wegen des Schließzustandes des Zündsicherungsventils 8 wirkungslos.The circuit just described has the following function: starting from the idle state shown in the circuit, that is to say when there is no current, the normally closed contact 18 is closed, but the normally open contact 27 of the ignition fuse is open. The supply voltage source is thus disconnected from the changeover switch 5. All relays are de-energized. The main fuel valve 2 and both pilot gas valves are closed. If the handle 16 is actuated in this state, the ignition gas valve 17 opens, but its opening remains ineffective because of the closed state of the ignition safety valve 8.

Auch ein Anfordern von Wärme durch Betätigen des Schalters 4 bewirkt zwar ein Öffnen des Hauptbrennstoffventils 2, nur ist auch dieses Öffnen wirkungslos, da das Zündsicherungsventil 8 nach wie vor geschlossen ist. Soll bei intakt arbeitender Speisespannungsquelle die Wärmequelle in Betrieb genommen werden, so wird die Handhabe 26 gedrückt, damit wird der Arbeitskontakt 27 geschlossen und das Zündsicherungsventil 8 geöffnet sowie der Anker 24 an den Elektromagneten 23 der Zündsicherung angelegt. Als Folge davon steht Gas oder Öl im Zuge der Brennstoffleitung 6 sowohl am Hauptventil 2 als auch an den parallelliegenden Zündbrennstoffventilen 13 und 17 an. Gleichfalls steht Speisespannung an der Leitung 19, und zwar über den Umschalter 5 auf der Leitung 28 an. Als Folge davon werden die Erregerspulen 31 und 33 beaufschlagt, so daß die entsprechenden Kontakte umschalten. Als Folge dieses Umschaltens steht die Speisespannung über die Leitung 36 und den Umschaltkontakt 44 auf der Leitung 45, so daß das Thermospannungssimulationsglied 46 gespeist ist. Die Folge davon ist eine Simulation von Thermospannung auf den Leitungen 47 und 48 beziehungsweise 21 und 22, so daß der Anker 24 vom Elektromagneten 23 angezogen wird. Auch ein Loslassen der Handhabe 26 bewirkt nunmehr, daß der Kontakt 27 geschlossen bleibt und das Zündsicherungsventil 8 geöffnet bleibt. Damit ist die Betriebsbereitschaftsstellung der Wärmequelle erreicht: Wird nämlich nunmehr über den Schalter 4 Wärme angefordert, so öffnet das Hauptbrennstoffventil 2, und gleichzeitig schaltet der Umschalter 5 um. Somit steht Speisespannung auf der Leitung 29 an, was zu einem Erregen der Magnetspule 14 und zu einem Öffnen des Zündbrennstoffventils 13 führt. Somit wird der Zündbrenner 12 mit Brennstoff beaufschlagt. Da die Leitung 28 nunmehr spannungslos ist, ist die Relaisspule 31 abgeschaltet, so daß der Umschaltkontakt 44 und der Arbeitskon. takt 38 unverzögert in die Ruhelage gehen, der Arbeitskontakt 35 unterliegt aber noch der Abfallverzögerung des Relais 34. Somit liegt über die Zeit der Abfallverzögerung Speisespannung über die Leitung 29, 37 und 39 am Zündtransformator 40, so daß der am Zündbrenner 12 austretende Brennstoff über die Zündelektrode 42 gezündet wird. Findet die Zündung statt, so wird das Thermoelement 20 beheizt und übernimmt die Speisung des Elektromagneten 23. Dessen Speisung endet nämlich nach Ende der Abfallverzögerung des Relais 34, da mit dem Zurückschalten des Kontakt 35 die Leitung 45 nicht mehr unter Speisespannung steht und somit das Thermostromsimulationsglied 46 nicht mehr mit Spannung versorgt wird. Gelingt die Zündung des Zündbrenners 12 nicht, so schließt das Zündsicherungsventil 8 mit Ablauf der Abfallverzögerung des Relais 34.Also, requesting heat by actuating the switch 4 causes the main fuel valve 2 to open, but this opening is also ineffective, since the ignition safety valve 8 is still closed. If the heat source is to be put into operation when the supply voltage source is intact, the handle 26 is pressed, so that the normally open contact 27 is closed and the ignition safety valve 8 is opened and the armature 24 is applied to the electromagnet 23 of the ignition fuse. As a result, gas or oil is present in the course of the fuel line 6 both at the main valve 2 and at the pilot fuel valves 13 and 17 lying in parallel. Likewise, supply voltage is present on line 19, specifically via switch 5 on line 28. As a result, the excitation coils 31 and 33 are acted on, so that the corresponding contacts switch. As a result of this switchover, the supply voltage is on line 36 and switchover contact 44 on line 45, so that the thermal voltage simulation element 46 is supplied. The result of this is a simulation of thermal voltage on lines 47 and 48 or 21 and 22, so that armature 24 is attracted to electromagnet 23. Releasing the handle 26 now also causes the contact 27 to remain closed and the ignition safety valve 8 to remain open. This means that the heat source is ready for operation: namely, if heat is now requested via switch 4, main fuel valve 2 opens and switch 5 switches over at the same time. Supply voltage is thus present on line 29, which leads to excitation of solenoid coil 14 and to opening of pilot fuel valve 13. The pilot burner 12 is thus supplied with fuel. Since the line 28 is now dead, the relay coil 31 is switched off, so that the changeover contact 44 and the working con. Clock 38 go into the rest position without delay, but the normally open contact 35 is still subject to the dropout delay of the relay 34. Thus, over the time of the dropout delay, the supply voltage is connected to the ignition transformer 40 via the lines 29, 37 and 39, so that the fuel escaping from the pilot burner 12 via the Ignition electrode 42 is ignited. If the ignition takes place, the thermocouple 20 is heated and takes over the supply of the electromagnet 23. Its supply ends after the end of the drop-out delay of the relay 34, since with the switching back of the contact 35 the line 45 is no longer under supply voltage and thus the thermocurrent simulation element 46 is no longer supplied with voltage. If the ignition of the pilot burner 12 does not succeed, the ignition safety valve 8 closes when the delay in decay of the relay 34 expires.

Aus dem Vorstehenden folgt, daß somit Hauptbrenner 1 und Zündbrenner 12 je nach Betriebszustand der Wärmequelle entweder gemeinsam brennen oder erlöschen. Ein Erlöschen des Wärmeanforderungssignals bewirkt ein Zurückschalten des Umschalters 5, womit die beiden Relaisspulen 31 und 33 wieder erregt werden, das Zündbrennstoffventil 14 schließt, die Stromlieferung des Thermoelements 20 nach Ablauf der Erkaltungszeit das Thermoelements unterbrochen wird und die Thermostromsimulation über die Kontakte 35 und 44 wieder übernommen wird.From the foregoing it follows that the main burner 1 and pilot burner 12 either burn together or go out, depending on the operating state of the heat source. An extinction of the heat request signal causes the switch 5 to be switched back, whereby the two relay coils 31 and 33 are energized again, the pilot fuel valve 14 closes, the supply of current to the thermocouple 20 is interrupted after the cooling time has elapsed, and the thermocouple is simulated again via contacts 35 and 44 is taken over.

Ein Ausfall der Speisespannung führt je nach dem Betriebszustand der Wärmequelle zu folgenden Ergebnissen:

  • Fällt die Speisespannung bei in Betrieb befindlicher Wärmequelle aus, so wirkt sich das in einem Erlöschen des Zündbrenners 12 aus, da das zugehörige Magnetventil 13 geschlossen wird. Der Hauptbrenner brennt weiter, die Überwachung der Wärmequelle findet über das Zündsicherungsventil 8 statt, das vom Hauptbrenner über das Thermoelement 20 mit Thermospannung versorgt wird. Bei Wiederkehr der Speisespannung wird das Zündgasmagnetventil 13 wieder geöffnet, und der Zündbrenner brennt. Fällt die Speisespannung jedoch aus im Betriebsbereitschaftszustand der Wärmequelle, so wird die Thermostromsimulation unterbrochen, da die beiden Relais 32 und 34 stromlos werden. Damit wird der Elektromagnet 23 nicht mehr mit Spannung versorgt, so daß das Zündsicherungsventil 8 schließt. Da die Wärmequelle ohnehin nicht in Betrieb war, wirkt sich das nicht weiter aus. Wird aber jetzt ein Wärmeanforderungssignal gegeben, geht die Wärmequelle nicht in Betrieb. Dies wird nach einiger Zeit der Verbraucher merken, entweder weil der Durchlauferhitzer auf Anforderung kein warmes Wasser liefert oder weil die Heizung eine eingestellte Vorlauftemperaturgrenze unterschreitet. In beiden Fällen kann durch Betätigen der Handhabe 16 der Zündbrenner mit Brennstoff versorgt werden, wenn zugleich die Handhabe 26 betätigt wird. Der am Zündbrenner 12 austretende Brennstoff kann entzündet werden, die Zündsicherungseinrichtung überwacht sich über die thermoelektrische Zündsicherung, da das Thermoelement beheizt wird. Erfolgt ein Wärmeanforderungssignal, so öffnet rein mechanisch das Hauptbrennstoffventil 2, Wärmequelle und Zündsicherungseinrichtung überwachen sich über die Thermoelektrik. Erlischt das Wärmeanforderungssignal, so schließt das Hauptventil 2, im Betriebsbereitschaftszustand erfolgt nach wie vor bei brennendem Zündbrenner die thermoelektrische Überwachung. Kehrt die Netzspannung wieder, so bleibt das für die Schaltung ohne Wirkung, da mit Betätigen der Handhabe 16 der Kontakt 18 geöffnet ist. Wird bei wiederkehrender Speisespannung der Kontakt 16 wieder geschlossen, das heißt das Ventil 17 gleichermaßen geschlossen, so findet bei fehlendem Wärmeanforderungssignal am Schalter 4 die Thermospannungssimulation wie beschrieben statt, da das Thermoelement trotz erlöschendem Zündbrenner 12 noch eine Erkaltungszeit aufweist, während der das Zündsicherungsventil 8 noch geschlossen bleibt. Ist aber mit dem Rücksetzen der Handhabe 16 gleichzeitig ein Wärmeanforderungssignal vorhanden, so öffnet sofort das Magnetventil 13, so daß der Zündbrenner, von einer sehr kurzfristigen Unterbrechungspause abgesehen, quasi in Betrieb bleibt. Der weiter brennende Zündbrenner 12 zündet wie beschrieben den Hauptbrenner 1.
A failure of the supply voltage leads to the following results depending on the operating state of the heat source:
  • If the supply voltage fails when the heat source is in operation, this results in the pilot burner 12 going out, since the associated solenoid valve 13 is closed. The main burner continues to burn, the heat source is monitored via the ignition safety valve 8, which is supplied with thermal voltage by the main burner via the thermocouple 20. When the supply voltage returns, the pilot gas solenoid valve 13 is opened again and the pilot burner burns. However, if the supply voltage fails when the heat source is in the ready state, the thermal current simulation is interrupted since the two relays 32 and 34 are de-energized. So that the electromagnet 23 is no longer supplied with voltage, so that the ignition safety valve 8 closes. Since the heat source was not in operation anyway, this has no further effect. However, if a heat request signal is now given, the heat source does not go into operation. This will be noticed by the consumer after some time, either because the instantaneous water heater does not supply hot water on request or because the heating falls below a set flow temperature limit. In both cases, the pilot burner can be supplied with fuel by actuating the handle 16 if the handle 26 is actuated at the same time. The fuel emerging from the pilot burner 12 can be ignited, the ignition fuse device monitors itself via the thermoelectric ignition fuse, since the thermocouple is heated. If a heat request signal is given, the main fuel valve 2 opens purely mechanically, the heat source and the ignition protection device are monitored via the thermoelectrics. If the heat request signal goes out, the main valve 2 closes; in the operational state, the thermoelectric monitoring is still carried out when the pilot burner is lit. If the mains voltage returns, this has no effect on the circuit, since the contact 18 is opened when the handle 16 is actuated. If the contact 16 is closed again when the supply voltage returns, that is to say the valve 17 is closed equally, the thermal voltage simulation takes place as described in the absence of a heat request signal at the switch 4, since the thermocouple, despite the pilot burner 12 being extinguished, still has a cooling time during which the ignition safety valve 8 still operates remains closed. However, if a heat request signal is present at the same time as the handle 16 is reset, the solenoid valve 13 opens immediately, so that the pilot burner, aside from a very short break, remains virtually in operation. The pilot burner 12 which continues to ignite ignites the main burner 1 as described.

Die Variante der Erfindung gemäß der Figur zwei besteht darin, daß die Verzweigung der Zündbrennstoffleitung 9 unterblieben ist, vielmehr arbeitet die Handhabe 16 direkt auf den Ventilkörper des Magnetventils 13. Ein Betätigen der Handhabe 16 bewirkt ein Verriegeln des Zündgasmagnetventils 13 in der Offenstellung, so daß sich die gleiche Funktion wie beim Ausführungsbeispiel gemäß Figur eins ergibt. Kostenmäßig liegt ein Vorteil vor, da die Leitungsverzweigung im Zündbrennstoffweg sowie das handbetätigte Ventil 17 erspart ist.The variant of the invention according to the figure two is that the branching of the pilot fuel line 9 is omitted, rather the handle 16 works directly on the valve body of the solenoid valve 13. Operating the handle 16 causes the pilot gas solenoid valve 13 to lock in the open position, so that the same function as in the embodiment according to FIG. 1 results. There is an advantage in terms of cost, since the branching in the pilot fuel path and the manually operated valve 17 are saved.

Claims (6)

1. Igniting and monitoring apparatus for fule- heated heat source comprising a thermoelectric flame failure device which is adapted to be activated by hand and comprises a thermocouple (20), that is heated by a pilot burner (12) fed via a pilot fuel valve (13, 14), and main fuel valve (2), included in a path leading to a main burner (1), also comprising a supply voltage source (R, Mp), to which an ignition generator (40) and a ther- mocurrant simulator (46) are dependently connected by switches, characterized in that a pilot fuel valve (17) operable by hand (16) is connected in parallel to the pilot fuel valve (13, 14) and is provided with a contact (18) for disconnecting the supply voltage source (R, Mp).
2. Igniting and monitoring apparatus for a fuel- . heated heat source comprising a thermoelektric flame failure device which is adapted to be activated by hand and comprises a thermocouple (20), that is heated by a pilot burner (12) fed via a pilot fuel valve (13, 14), and a main fuel valve (2) included in a path leading to a main burner (1), also comprising a supply voltage source (R, Mp), to which an ignition generator (40) and a ther- mocurrant simulator (46) are dependently connected by switches, characterized in that the pilot fuel valve (13) comprises a handle (16), by means of which the valve can be locked in an opened state, and a contact (18) for disconnecting the supply voltage source (R, Mp) is coupled to the valve.
3. Igniting and monitoring apparatus according to claim 1 or 2, characterized in that a normally open contact (27) of a thermoelectric flame failure device (23, 24) and a change-over switch (5) actuated by a heat-demanding consumer (4) are connected in series with the contact (18) of the pilot fuel valve (13).
4. Igniting and monitoring apparatus according to any of claims 1 to 3, characterized in that one contact of the change-over switch (5) is connected to al line (29) leading to the pilot fuel valve (13), which consiste of a solenoid valve, and is connected by a timer (39, 34) to an igniting device (40).
5. Igniting and monitoring apparatus according to any of claims 1 to 4, characterized in that the other contact of the change-over switch (5) is connected to a line (28), which leads to the timer (33, 34) and to a change-over switch, which is connected by a line (45) to a thermocurrent simulator (46).
6. Igniting and monitoring apparatus according to claim 5, characterized in that a switch (35) of the timer (33) is succeeded by a change-over switch (44), which in one position connects the thermocurrent simulator (46) and in the other position connects the igniting device to the supply voltage.
EP82900091A 1980-12-16 1981-12-12 Ignition and surveyance device for a heat source with fuel heating Expired EP0067186B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82900091T ATE7533T1 (en) 1980-12-16 1981-12-12 IGNITION AND MONITORING DEVICE FOR A FUEL-HEATED HEAT SOURCE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8033446U 1980-12-16
DE8033446 1980-12-16

Publications (2)

Publication Number Publication Date
EP0067186A1 EP0067186A1 (en) 1982-12-22
EP0067186B1 true EP0067186B1 (en) 1984-05-16

Family

ID=6721447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82900091A Expired EP0067186B1 (en) 1980-12-16 1981-12-12 Ignition and surveyance device for a heat source with fuel heating

Country Status (7)

Country Link
US (1) US4529373A (en)
EP (1) EP0067186B1 (en)
JP (1) JPH0128856B2 (en)
AU (1) AU563876B2 (en)
DE (1) DE3163691D1 (en)
IT (1) IT8123695V0 (en)
WO (1) WO1982002083A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607907B1 (en) * 1984-02-24 1990-02-02 Rinnai Kk WATER HEATER
US4770629A (en) * 1987-03-11 1988-09-13 Honeywell Inc. Status indicator for self-energizing burner control system
DE3844082A1 (en) * 1988-12-28 1990-07-05 Cramer Gmbh & Co Kg COOKER WITH AT LEAST ONE GLASS-CERAMIC COOKER
US6217312B1 (en) * 1999-04-29 2001-04-17 General Electric Company Ignition system for a gas appliance
US6168418B1 (en) * 1999-04-29 2001-01-02 General Electric Company Ignition system with delay switch for a gas appliance
US7045916B2 (en) * 2003-05-30 2006-05-16 Honeywell International Inc. Electronic fuel selection switch system
US8851884B2 (en) * 2008-10-02 2014-10-07 Coprecitec, S.L. Control system for the ignition of a gas burner
US8882492B2 (en) * 2008-10-02 2014-11-11 Coprecitec, S.L. Control systems for the ignition of a gas burner
US9410525B2 (en) 2013-08-07 2016-08-09 Denso International America, Inc. Valve controlled combustion system
CN108276367B (en) * 2018-01-25 2020-05-08 暨南大学 Bromo-furanone ester compound and preparation method and application thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516504A (en) * 1950-07-25 Safety control and pilot indicator
US2501850A (en) * 1950-03-28 Control and ignition system for
US2411230A (en) * 1945-01-29 1946-11-19 Gen Controls Co Burner control system
DE1551966A1 (en) * 1967-03-02 1970-03-26 Junkers & Co Thermoelectric fuse device for gas-heated devices
FR2049481A5 (en) * 1969-06-11 1971-03-26 Vidalenq Maurice
FR2125856A5 (en) * 1971-02-19 1972-09-29 Junkers & Co
US4318687A (en) * 1977-12-28 1982-03-09 Inoue-Japax Research Incorporated Gas burner control system

Also Published As

Publication number Publication date
DE3163691D1 (en) 1984-06-20
US4529373A (en) 1985-07-16
JPS57501974A (en) 1982-11-04
AU7934482A (en) 1982-07-01
IT8123695V0 (en) 1981-12-03
EP0067186A1 (en) 1982-12-22
JPH0128856B2 (en) 1989-06-06
AU563876B2 (en) 1987-07-23
WO1982002083A1 (en) 1982-06-24

Similar Documents

Publication Publication Date Title
EP0067186B1 (en) Ignition and surveyance device for a heat source with fuel heating
DE2839012A1 (en) ARRANGEMENT IN THE CASE OF A GAS FIRED APPARATUS, IN PARTICULAR ABSORPTION COOLING DEVICE
DE60029296T2 (en) Quick ignition device for gas burners with magnetic safety valve
DE3144211A1 (en) Ignition and monitoring device for a fuel-heated heat source
DE3724084C2 (en)
DE2222259A1 (en) CONTROL CIRCUIT FOR OIL AND GAS BURNERS
DE2426943A1 (en) FIRE MACHINE
AT398242B (en) CIRCUIT ARRANGEMENT FOR THE TIMED SHUTDOWN OF A GAS BURNER
DE19723653A1 (en) Safety disconnector e.g for commercial and domestic gas-burning apparatus
DE2500557A1 (en) Push button ignitor on domestic gas equipment - has ignition button held down electromagnetically for required time to simplify ignition procedure
DE1529070C3 (en) Device for keeping open gas valves assigned to gas safety switches in gas burners with thermoelectric fuse
DE919041C (en) Safety device for gas burner
AT237248B (en) Electrically controlled, fully automatic low-gas ignition protection
DE903201C (en) Safety system for gas-heated devices
DE578232C (en) Electrical control device for oil firing systems
DE1529131C (en) Electric extra-low voltage safety ignition device for gas-operated devices
DE927143C (en) Flame safety device for gas fires with several flames
DE1529129C (en) Electrical extra-low voltage safety ignition device for gas-operated devices
DE2034856A1 (en) Control and monitoring device for oil or gas burners
DE1914894C3 (en) Control and monitoring device for oil and gas burners
DE1529131B2 (en) ELECTRIC LOW VOLTAGE SAFETY DEVICE FOR GAS OPERATED DEVICES
DE2244799A1 (en) CONTROL DEVICE FOR BURNER SYSTEMS
DE1429113A1 (en) Electrically controlled, fully automatic gas failure safety device
CH382091A (en) Thermoelectrically controlled, fully automatic low-gas ignition protection
DE1455999B1 (en) Safety circuit for combustion heaters for vehicles, in particular motor vehicles

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

17P Request for examination filed

Effective date: 19820724

AK Designated contracting states

Designated state(s): AT CH DE FR GB LI LU NL SE

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VAILLANT GMBH

Owner name: SCHONEWELLE B.V.

Owner name: VAILLANT LIMITED

Owner name: VAILLANT GES.M.B.H

Owner name: VAILLANT S.A.R.L

Owner name: JOH. VAILLANT GMBH U. CO

AK Designated contracting states

Designated state(s): AT CH DE FR GB LI LU NL SE

REF Corresponds to:

Ref document number: 7533

Country of ref document: AT

Date of ref document: 19840615

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3163691

Country of ref document: DE

Date of ref document: 19840620

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

Ref country code: SE

Payment date: 19840630

Year of fee payment: 4

ET Fr: translation filed
RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: VAILLANT GMBH

Owner name: SCHONEWELLE B.V.

Owner name: VAILLANT LTD.

Owner name: VAILLANT GES.M.B.H

Owner name: VAILLANT S.A.R.L

Owner name: JOH. VAILLANT GMBH U. CO

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

Ref country code: CH

Payment date: 19841205

Year of fee payment: 4

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

Ref country code: LU

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

Effective date: 19841231

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: AT

Payment date: 19851211

Year of fee payment: 5

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

Ref country code: AT

Effective date: 19861212

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

Ref country code: DE

Payment date: 19890919

Year of fee payment: 9

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

Ref country code: FR

Payment date: 19890926

Year of fee payment: 9

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

Ref country code: GB

Effective date: 19891212

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

Ref country code: SE

Effective date: 19891213

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

Ref country code: LI

Effective date: 19891231

Ref country code: CH

Effective date: 19891231

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

Ref country code: NL

Payment date: 19891231

Year of fee payment: 9

GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: NL

Effective date: 19910701

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19910830

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

Ref country code: DE

Effective date: 19910903

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 82900091.8

Effective date: 19900830