EP2771617A1 - Gas regulator fitting - Google Patents

Gas regulator fitting

Info

Publication number
EP2771617A1
EP2771617A1 EP12784209.4A EP12784209A EP2771617A1 EP 2771617 A1 EP2771617 A1 EP 2771617A1 EP 12784209 A EP12784209 A EP 12784209A EP 2771617 A1 EP2771617 A1 EP 2771617A1
Authority
EP
European Patent Office
Prior art keywords
gas
valve
microswitch
return spring
ignition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12784209.4A
Other languages
German (de)
French (fr)
Other versions
EP2771617B1 (en
EP2771617B8 (en
Inventor
Barbara Happe
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.)
Maxitrol GmbH and Co KG
Original Assignee
Mertik Maxitrol GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mertik Maxitrol GmbH and Co KG filed Critical Mertik Maxitrol GmbH and Co KG
Priority to SI201231126T priority Critical patent/SI2771617T1/en
Priority to PL12784209T priority patent/PL2771617T3/en
Publication of EP2771617A1 publication Critical patent/EP2771617A1/en
Publication of EP2771617B1 publication Critical patent/EP2771617B1/en
Application granted granted Critical
Publication of EP2771617B8 publication Critical patent/EP2771617B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q3/00—Igniters using electrically-produced sparks
    • F23Q3/006—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/26—Details
    • 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

  • the invention relates to a gas control valve with electronic ignition for a gas-fired heating device according to the preamble of the first claim.
  • Gas control valves for a gas-fired heating device such as a gas heating stove, a gas fireplace or the like, are available in a variety of versions. They serve to ignite and control a gas flow flowing to a burner.
  • German Patent Application DE 10 2010 019 960 A1 describes a gas control fitting with electronic ignition with an electronic control unit fed by a voltage source.
  • a thermoelectric Zünd Anlagensventil and a main valve which serve both for Zündtechnisch as well as for splitting the gas stream into shares for a main burner and a pilot burner and housed additional secondary functional element.
  • a plunger is arranged, which protrudes from the gas-carrying space of the housing and in the longitudinal direction against the force of a return spring is actuated such that the Zündtechnischsventil is in the open position and the main valve in the closed position.
  • a microswitch connected to the electronic control unit, which is switched in the longitudinal direction against the force of the return spring upon manual actuation of the plunger. This gives the electronic control unit an electrical signal. In the off state of the gas control valve then an activation of the same takes place, whereas in the already switched on the gas control valve is the same disabled by a relay interruption of the Thermostrom Vietnamesees and thus the thermoelectric Zündtechnischsventils flowing holding current.
  • the invention is based on the problem in a gas control valve with electronic ignition of the gas stream according to the preamble of the first claim to ensure a simple manual operation by switching on and off to be made possible with one movement. Furthermore, it should be ensured that switching off the gas control valve is ensured even in case of failure of the voltage source.
  • the problem is solved in that upon activation of the gas control valve, an ignition fuse is energized via a current flowing through a first micro-switch current, and that on the housing, a second micro-switch is arranged, which in a manual actuation of the plunger in the longitudinal direction against the force the return spring assumes its open position. Electrically, this microswitch is connected in series in the thermal circuit.
  • Both microswitches are operable via switching contours assigned to them on the plunger in such a way that the first microswitch is closed before the second microswitch is opened, whereas the second microswitch is closed before the first microswitch opens when the plunger is closed after termination. tion of the manual operation under the force of the return spring assumes its initial position.
  • FIG. 1 shows an embodiment of a gas control valve in a partially sectioned view in the closed position
  • Fig. 2 shows an embodiment of a gas control valve in a partially sectioned view in a manual operation of the plunger.
  • the exemplary gas control valve according to the invention shown in the figures is a switching and control device which is intended for installation in gas-operated heating devices or the like. It enables the operation and monitoring of a burner by controlling the amount of gas flowing to the burner becomes.
  • the burner consists in this embodiment of a pilot burner, not shown, and a main burner, also not shown.
  • the gas control valve according to the invention shown in the figures and described below consists of a housing 1, in which different functional units, partially via control elements 17; 28 can be operated from the outside.
  • the housing is composed of an upper part 2 and a lower part 3, between which a flat gasket 4 ensures the outer tightness, and a cover 5 composed.
  • the housing 1 has a gas inlet 6, a Zündgasausgang 7 and a main gas outlet 8. It has the following functional units:
  • a plunger 10 is longitudinally movably guided in a bearing point 9 of the upper part 2, which extends with its end into the interior of the housing 1, wherein, for example, by a circular ring 11, the necessary gas tightness is ensured.
  • the movement of the plunger 10 in the longitudinal direction is possible only against the force of a support in the upper part 2 return spring 12.
  • first micro-switch 13 which is electrically connected to the electronic control unit
  • second micro-switch 14 which is electrically connected in series in the thermal circuit, attached.
  • the microswitch 13 in the closed position of the gas control valve, the microswitch 13 is in the open position and the microswitch 14 is in the closed position.
  • switching contour 5 for the switching element 18 of the first microswitch 13
  • switching contour 16 for the switching element. 19 of the second microswitch 14.
  • Both switching contours 15; 16 are located on the lateral surface of a control element 17 which is fixed on the outwardly projecting part of the plunger 10.
  • the starting position to be assumed under the force of the return spring 12 is achieved in that the valve disk 21 of the main valve 20 bears against the upper part 2.
  • a partition wall 24 By a partition wall 24, the interior of the upper part 2 and lower part 3 formed part of the housing 1 is divided into different rooms. Escaping in extension of the plunger 10, the partition wall 24 has an opening 32, the upper part 2 facing side of the valve seat 25 for the valve plate 21, and thus in conjunction with this, the main valve 20, while the other side of the opening 32 to a Zündracsventil 26 associated valve seat 27 forms. Between the two valve seats 25; 27 opens into the opening 32 leading to Zündgasausgang 7 Zündgasbohrung 33.
  • the Zündschsventil 26 is influenced by a gas-tight in a bearing of the housing 1 thermoelectric Zündtechnischsmagneten 34, which is located downstream of the gas inlet 6.
  • thermoelectric Zündschsmagnet 34 acts on an armature which is rigidly connected to a valve rod 29, on which the valve disc 30 of the Zünd Anlagensventils 26 is attached.
  • the thermoelectric ignition safety magnet 34 can be excited via the electronic control unit as well as via a thermocouple exposed to the pilot flame.
  • the construction and mode of operation of the ignition-securing magnet 34 are familiar to the person skilled in the art, so that it is possible to dispense with the description of further details. It should be emphasized only that a return spring 31 strives to deduct the armature on the serving as a spring bearing valve plate 30 from the Zündtechnischsmagneten 34.
  • the housing 1 In the flow direction behind the startup is located within the housing 1, not shown, as known to those skilled control unit for the gas flowing to the main burner gas. It usually consists of a switch which controls the amount of gas flowing to the main burner.
  • the switch is designed, for example, so that a modulating control is effected via a first valve with jump-like switching on and off in the partial load range via a second valve.
  • the partial load flow is limited by an adjustable nozzle.
  • a longitudinally movable actuating rod which is connected to the switch and projects longitudinally, protrudes out of the housing 1 forming a bearing for it at the same time and is connected to a control element 28.
  • the operation of the gas control valve is as follows:
  • Fig. 1 the gas control valve is shown in the off state.
  • the operating element 17 is under the action of the return spring 12 in its initial position.
  • the main valve 20 is indeed open, but the Zündtechnischsmagnet 34 is not energized, so that the Zündtechnischsventil 26 is closed and no gas can flow to the burner.
  • To turn on the gas control valve must be moved over the control element 17 of the plunger 0 in its longitudinal direction against the force of the return spring 12, so that there is the position shown in FIG.
  • the main valve 20 is first closed and then the ignition safety valve 26 is opened so far that the armature is applied to the Zündtechnischsmagneten 34.
  • the ignition gas can now flow via the Zündgasbohrung 33 to Zündgas gas outlet 7 and from there via a Zündgastechnisch not shown to the pilot burner.
  • the first microswitch 13 is closed via the switching contour 15 and the switching element 18 and is thereby achieved via an electrical signal sent to the electronic control unit such that a current is applied to the ignition securing magnet via the first microswitch 13, and on the other hand ignited via the electronic control unit, the gas flowing out of the pilot burner gas.
  • the switching element 19 of the second microswitch 14 is actuated via the switching contour 16, so that the microswitch 14 assumes its open position, whereby the thermal circuit is interrupted.
  • thermocouple which can be influenced by the pilot flame, but can not yet flow due to the interrupted thermo-current circuit.
  • the plunger Only when the manual operation of the operating element 17 is terminated, the plunger returns to its initial position, the main valve 20 is opened and the micro-switch 13; 14 are pressed. In this case, the opening of the first microswitch 13 takes place only after the second microswitch has already closed to ensure that the Zündtechnischsmagnet 34, now on the applied thermoelectric voltage, remains energized.
  • the switch can be operated in a known manner, by first comes to a sudden opening of the second valve.
  • the limited by an opening constant amount of gas flows through the main gas outlet 8 through a main gas line also not shown to the main burner and is ignited via the pilot flame.
  • the flames burn with a minimum height.
  • the amount of gas flowing to the main gas burner is uniformly increased, since now the first valve opens continuously, whereby a uniform increase in the amount of gas flowing through the first valve is achieved.
  • control element 17 If the control element 17 is actuated in the activated state of the gas control valve, the main valve 20 is closed and thus the gas flow to the main burner is interrupted. About the also simultaneously taking place of the microswitch 14, the thermal circuit is manually interrupted. The Zündtechnischsmagnet 34 is no longer energized and thus the Zündtechnischsventil 26 is no longer maintained. As soon as the control element 17 is no longer actuated and returns to its initial position, the ignition safety valve 26 also moves into the closed position. The gas control valve is in the deactivated state.
  • the gas control valve according to the invention is of course not limited to the illustrated embodiment. Rather, changes, modifications and combinations are possible without departing from the scope of the invention. So it is understood that, for example, the above-mentioned and described control unit for the gas flowing to the main burner gas quantity can be omitted if a constant amount of gas to flow to the main burner and it is not necessary to control this gas flow. On the other hand, the gas control valve, for example, even more functional units, such as a pressure regulator or the like, have. W

Landscapes

  • 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)
  • Regulation And Control Of Combustion (AREA)

Abstract

The aim of the invention is to provide a gas regulator fitting that ensures simple manual operation. In particular, activation and deactivation, respectively, are to be made possible with one motion. Furthermore, the invention aims to ensure that even in the event the voltage source malfunctions, the gas regulator fitting will be deactivated. To accomplish this, an ignition safety magnet (34) is excited by a current flowing over a first micro switch (13) when the gas regulator fitting is activated by means of the manual actuation of a tappet (10) having selector contours (15; 16) in a longitudinal direction against the force of a return spring (12). A second micro switch (14), which is series-connected in the thermal current circuit, thereby assumes the open position thereof since both micro switches (13; 14) can be operated by means of the selector contours (15; 16) assigned thereto, such that the first micro switch (13) is closed before the second micro switch (14) is opened, whereas when the tappet (10) assumes the initial position thereof under the force of the return spring (12), the second micro switch (14) is closed before the first micro switch (13) is opened.

Description

Beschreibung  description
Gasregelarmatur Technisches Gebiet Gas control fitting Technical field
Die Erfindung betrifft eine Gasregelarmatur mit elektronischer Zündung für eine gasbetriebene Heizeinrichtung nach dem Oberbegriff des ersten Patentanspruches. The invention relates to a gas control valve with electronic ignition for a gas-fired heating device according to the preamble of the first claim.
Stand der Technik State of the art
Gasregelarmaturen für eine gasbetriebene Heizeinrichtung, wie einen Gasheizofen, einen Gaskamin oder dergleichen, gibt es in einer Vielzahl von Ausführun- gen. Sie dienen zur Zündung und zur Regelung eines einem Brenner zufließenden Gasstromes. Gas control valves for a gas-fired heating device, such as a gas heating stove, a gas fireplace or the like, are available in a variety of versions. They serve to ignite and control a gas flow flowing to a burner.
So ist in der deutschen Patentanmeldung DE 10 2010 019 960 A1 eine Gasregelarmatur mit elektronischer Zündung mit einer von einer Spannungsquelle ge- speisten elektronischen Steuereinheit beschrieben. In einem mehrteiligen Gehäuse sind ein thermoelektrisches Zündsicherungsventil und ein Hauptventil, die gemeinsam sowohl zur Zündsicherung als auch zur Aufspaltung des Gasstromes in Anteile für einen Hauptbrenner und für einen Zündbrenner dienen und weitere sekundäre Funktionselement untergebracht. Axial zum Zündsicherungsventil und zum Hauptventil ist ein Stößel angeordnet, der aus dem gasführenden Raum des Gehäuses herausragt und in Längsrichtung gegen die Kraft einer Rückholfeder derart betätigbar ist, dass sich das Zündsicherungsventil in der Offenstellung und das Hauptventil in der Geschlossenstellung befindet. Auf dem Gehäuse ist ein mit der elektronischen Steuereinheit verbundener Mikro- schalter angeordnet ist, der bei einer manuellen Betätigung des Stößels in Längsrichtung gegen die Kraft der Rückholfeder geschaltet wird. Dadurch erhält die elektronische Steuereinheit ein elektrisches Signal. Bei ausgeschaltetem Zustand der Gasregelarmatur erfolgt dann eine Aktivierung derselben, wohingegen im bereits eingeschaltetem Zustand der Gasregelarmatur dieselbe deaktiviert wird, indem über ein Relais eine Unterbrechung des Thermostromkreises und damit des zum thermoelektrischen Zündsicherungsventils fließenden Haltestroms erfolgt. For example, German Patent Application DE 10 2010 019 960 A1 describes a gas control fitting with electronic ignition with an electronic control unit fed by a voltage source. In a multi-part housing, a thermoelectric Zündsicherungsventil and a main valve, which serve both for Zündsicherung as well as for splitting the gas stream into shares for a main burner and a pilot burner and housed additional secondary functional element. Axially to the Zündsicherungsventil and the main valve, a plunger is arranged, which protrudes from the gas-carrying space of the housing and in the longitudinal direction against the force of a return spring is actuated such that the Zündsicherungsventil is in the open position and the main valve in the closed position. Disposed on the housing is a microswitch connected to the electronic control unit, which is switched in the longitudinal direction against the force of the return spring upon manual actuation of the plunger. This gives the electronic control unit an electrical signal. In the off state of the gas control valve then an activation of the same takes place, whereas in the already switched on the gas control valve is the same disabled by a relay interruption of the Thermostromkreises and thus the thermoelectric Zündsicherungsventils flowing holding current.
Hierbei ist es von Nachteil, dass für eine ordnungsgemäße Ausschaltung der Gasregelarmatur ein von der Spannungsquelle bereit zu stellender Strom zur Verfügung stehen muss. Das bedeutet, dass bei einem Ausfall der Spannungsquelle, zum Beispiel bei einer entladenen Batterie, keine Ausschaltung erfolgt. Das kann ein Sicherheitsproblem darstellen. In this case, it is disadvantageous that, for a proper switching off of the gas control fitting, a current to be provided by the voltage source must be available. This means that in the event of a power source failure, for example a discharged battery, it will not be turned off. This can be a security problem.
Darstellung der Erfindung Der Erfindung liegt das Problem zugrunde bei einer Gasregelarmatur mit elektronischer Zündung des Gasstromes nach dem Oberbegriff des ersten Patentanspruches eine einfache manuelle Bedienung zu gewährleisten, indem Einschalten und Ausschalten mit jeweils einer Bewegung ermöglicht werden sollen. Weiterhin soll gewährleistet sein, dass auch bei einem Ausfall der Spannungsquelle ein Ausschalten der Gasregelarmatur sichergestellt ist. The invention is based on the problem in a gas control valve with electronic ignition of the gas stream according to the preamble of the first claim to ensure a simple manual operation by switching on and off to be made possible with one movement. Furthermore, it should be ensured that switching off the gas control valve is ensured even in case of failure of the voltage source.
Erfindungsgemäß wird das Problem dadurch gelöst, dass bei Aktivierung der Gasregelarmatur ein Zündsicherungsmagnet über einen über einen ersten Mikroschalter fließenden Strom erregt ist, und dass auf dem Gehäuse ein zweiter Mi- kroschalter angeordnet ist, der bei einer manuellen Betätigung des Stößels in Längsrichtung gegen die Kraft der Rückholfeder seine Offenstellung einnimmt. Elektrisch ist dieser Mikroschalter im Thermostromkreis in Reihe geschaltet. According to the invention, the problem is solved in that upon activation of the gas control valve, an ignition fuse is energized via a current flowing through a first micro-switch current, and that on the housing, a second micro-switch is arranged, which in a manual actuation of the plunger in the longitudinal direction against the force the return spring assumes its open position. Electrically, this microswitch is connected in series in the thermal circuit.
Beide Mikroschalter sind über auf dem Stößel befindliche ihnen zugeordnete Schaltkonturen derart betätigbar, dass der erste Mikroschalter geschlossen ist, ehe der zweite Mikroschalter geöffnet ist, wohingegen der zweite Mikroschalter geschlossen ist, ehe der erste Mikroschalter öffnet, wenn der Stößel nach Beendi- gung der manuellen Betätigung unter der Kraft der Rückholfeder seine Anfangsstellung einnimmt. Both microswitches are operable via switching contours assigned to them on the plunger in such a way that the first microswitch is closed before the second microswitch is opened, whereas the second microswitch is closed before the first microswitch opens when the plunger is closed after termination. tion of the manual operation under the force of the return spring assumes its initial position.
Damit wurde eine Lösung gefunden, mit der die weiter oben genannten Nachteile des Standes der Technik beseitigt wurden. Weiterhin ist durch eine manuelle Betätigung des Stößels in einfacher Weise ein Wechsel des Betriebszustandes, d.h. ein Einschalten bzw. ein Ausschalten möglich. Desweiteren ist es gewährleistet, dass die Ausschaltung auch bei einem Ausfall der Spannungsquelle erfolgt. Eine vorteilhafte Ausgestaltung der Erfindung geht aus dem Unteranspruch hervor. Thus, a solution was found with which the above-mentioned disadvantages of the prior art have been eliminated. Furthermore, by a manual operation of the plunger in a simple manner, a change of the operating state, i. switching on or off possible. Furthermore, it is ensured that the disconnection takes place even in the event of a power failure. An advantageous embodiment of the invention will become apparent from the dependent claim.
So erweist es sich als günstige Ausgestaltung der Gasregelarmatur, wenn die beiden Mikroschalter derart lagemäßig auf dem Oberteil befestigt sind, dass die Schaltkonturen identisch sind. Damit ist es möglich, die Schaltkontur als eine einfach herzustellende Drehkontur auf dem Bedienungselement zu fertigen. Thus, it proves to be favorable configuration of the gas control valve, when the two micro-switches are mounted in such a position on the upper part, that the switching contours are identical. This makes it possible to manufacture the switching contour as an easy-to-manufacture rotational contour on the operating element.
Ausführungsbeispiel Anhand eines Ausführungsbeispiels wird die erfindungsgemäße Gasregelarmatur nachstehend unter Zuhilfenahme der Zeichnungen näher erläutert. Es zeigen: Exemplary embodiment With reference to an exemplary embodiment, the gas control fitting according to the invention is explained in more detail below with the aid of the drawings. Show it:
Fig. 1 eine Ausführung einer Gasregelarmatur in teilweise geschnittener Darstellung in Geschlossenstellung, 1 shows an embodiment of a gas control valve in a partially sectioned view in the closed position,
Fig. 2 eine Ausführung einer Gasregelarmatur in teilweise geschnittener Darstellung bei einer manuellen Betätigung des Stößels. Fig. 2 shows an embodiment of a gas control valve in a partially sectioned view in a manual operation of the plunger.
Die in den Figuren dargestellte beispielhafte erfindungsgemäße Gasregelarmatur ist ein Schalt- und Regelgerät, das für den Einbau in gasbetriebene Heizeinrich- tungen oder dergleichen bestimmt ist. Sie ermöglicht die Bedienung und Überwachung eines Brenners, indem die zum Brenner strömende Gasmenge gesteuert wird. Der Brenner besteht in diesem Ausführungsbeispiel aus einem nicht dargestellten Zündbrenner und einem ebenfalls nicht dargestellten Hauptbrenner. The exemplary gas control valve according to the invention shown in the figures is a switching and control device which is intended for installation in gas-operated heating devices or the like. It enables the operation and monitoring of a burner by controlling the amount of gas flowing to the burner becomes. The burner consists in this embodiment of a pilot burner, not shown, and a main burner, also not shown.
Die erfindungsgemäße, in den Figuren gezeigte und nachfolgend beschriebene Gasregelarmatur besteht aus einem Gehäuse 1 , in dem sich verschiedene Funktionseinheiten, die teilweise über Bedienungselemente 17; 28 von außen betätigt werden können, befinden. Das Gehäuse ist aus einem Oberteil 2 und einem Unterteil 3, zwischen denen eine Flachdichtung 4 die äußere Dichtheit gewährleistet, sowie einer Abdeckhaube 5 zusammengesetzt. Desweiteren weist das Gehäuse 1 einen Gaseingang 6, einen Zündgasausgang 7 und einen Hauptgasausgang 8 auf. Sie besitzt folgende Funktionseinheiten: The gas control valve according to the invention shown in the figures and described below consists of a housing 1, in which different functional units, partially via control elements 17; 28 can be operated from the outside. The housing is composed of an upper part 2 and a lower part 3, between which a flat gasket 4 ensures the outer tightness, and a cover 5 composed. Furthermore, the housing 1 has a gas inlet 6, a Zündgasausgang 7 and a main gas outlet 8. It has the following functional units:
• Inbetriebnahme mit Zündsicherung • Commissioning with ignition protection
• Steuerungseinheit für die zum Hauptbrenner strömende Gasmenge  • Control unit for the amount of gas flowing to the main burner
Zur Ansteuerung dient eine nicht dargestellte elektronische Steuereinheit, die sich in diesem Beispiel zusammen mit einer Spannungsquelle in einem separaten ortsunabhängigen nicht dargestellten Gehäuse befindet. Für die Inbetriebnahme ist in einer Lagerstelle 9 des Oberteiles 2 ein Stößel 10 längsbeweglich geführt, der mit seinem Ende in das Innere des Gehäuses 1 reicht, wobei zum Beispiel durch einen Rundring 11 die notwendige Gasdichtheit gewährleistet wird. Die Bewegung des Stößels 10 in Längsrichtung ist dabei nur gegen die Kraft einer sich im Oberteil 2 abstützenden Rückholfeder 12 möglich. To control serves an electronic control unit, not shown, which is located in this example, together with a voltage source in a separate location-independent housing, not shown. For commissioning a plunger 10 is longitudinally movably guided in a bearing point 9 of the upper part 2, which extends with its end into the interior of the housing 1, wherein, for example, by a circular ring 11, the necessary gas tightness is ensured. The movement of the plunger 10 in the longitudinal direction is possible only against the force of a support in the upper part 2 return spring 12.
Zwischen Oberteil 2 und Abdeckhaube 5 sind desweiteren ein erster Mikroschalter 13, der elektrisch mit der elektronischen Steuereinheit verbunden ist, und ein zweiter Mikroschalter 14, der elektrisch im Thermostromkreis in Reihe geschaltet ist, befestigt. Dabei befindet sich in der Geschlossenstellung der Gasregelarmatur der Mikroschalter 13 in der Offenstellung und der Mikroschalter 14 in der Geschlossenstellung. Dies wird erreicht über eine Schaltkontur 5 für das Schaltelement 18 des ersten Mikroschalters 13 und eine Schaltkontur 16 für das Schaltele- ment 19 des zweiten Mikroschalters 14. Beide Schaltkonturen 15; 16 befinden sich auf der Mantelfläche eines Bedienungselementes 17, das auf dem nach außen ragenden Teil des Stößels 10 befestigt ist. Günstigerweise können, wie in diesem Ausführungsbeispiel, die beiden Mikro- schalter 13; 14 derart in unterschiedlicher Lage auf dem Oberteil 2 befestigt sein, dass die Schaltkonturen 15; 16 identisch sind und damit als eine einfach herzustellende Drehkontur auf dem Bedienungselement 7 gefertigt werden können. Auf dem in das Innere des Oberteiles 2 ragenden Bereich des Stößels 10 ist ein zu einem Hauptventil 20 zugehöriger Ventilteller 21 verschiebbar geführt, der sich unter der Kraft einer Schließfeder 22, die einerseits am Oberteil 2 und andererseits am Ventilteller 21 anliegt, auf einem auf dem Stößel 10 befindlichen Anschlag 23 abstützt. Die unter der Kraft der Rückholfeder 12 einzunehmende Aus- gangsstellung wird dadurch erreicht, dass der Ventilteller 21 des Hauptventils 20 am Oberteil 2 anliegt. Between upper part 2 and cover 5 are further a first micro-switch 13 which is electrically connected to the electronic control unit, and a second micro-switch 14 which is electrically connected in series in the thermal circuit, attached. In this case, in the closed position of the gas control valve, the microswitch 13 is in the open position and the microswitch 14 is in the closed position. This is achieved via a switching contour 5 for the switching element 18 of the first microswitch 13 and a switching contour 16 for the switching element. 19 of the second microswitch 14. Both switching contours 15; 16 are located on the lateral surface of a control element 17 which is fixed on the outwardly projecting part of the plunger 10. Conveniently, as in this embodiment, the two micro-switches 13; Be secured 14 so in a different position on the upper part 2, that the switching contours 15; 16 are identical and thus can be made as a simple to produce rotary contour on the control element 7. On the projecting into the interior of the upper part 2 region of the plunger 10 is associated with a main valve 20 valve plate 21 slidably guided, which rests under the force of a closing spring 22, on the one hand on the upper part 2 and on the other hand on the valve plate 21, on a on the Plunger 10 located stop 23 is supported. The starting position to be assumed under the force of the return spring 12 is achieved in that the valve disk 21 of the main valve 20 bears against the upper part 2.
Durch eine Trennwand 24 wird das Innere des durch Oberteil 2 und Unterteil 3 gebildeten Teiles des Gehäuses 1 in verschiedene Räume unterteilt. Fluchtend in Verlängerung des Stößels 10 weist die Trennwand 24 eine Öffnung 32 auf, deren dem Oberteil 2 zugewandte Seite den Ventilsitz 25 für den Ventilteller 21 , und damit in Verbindung mit diesem das Hauptventil 20 bildet, während die andere Seite der Öffnung 32 einen zu einem Zündsicherungsventil 26 zugehörigen Ventilsitz 27 bildet. Zwischen beiden Ventilsitzen 25; 27 mündet in die Öffnung 32 eine zum Zündgasausgang 7 führende Zündgasbohrung 33. Das Zündsicherungsventil 26 wird durch einen in einer Lagerstelle des Gehäuses 1 gasdicht angeordneten thermoelektrischen Zündsicherungsmagneten 34 beeinflusst, der sich stromab des Gaseinganges 6 befindet. Der thermoelektrische Zündsicherungsmagnet 34 wirkt auf einen Anker, der starr mit einer Ventilstange 29 verbunden ist, auf der der Ventilteller 30 des Zündsicherungsventils 26 befestigt ist. Über die elektronische Steuereinheit sowie über ein der Zündflamme ausgesetztes Thermoelement ist der thermoelektrische Zündsicherungsmagnet 34 erregbar. Der Aufbau und die Wirkungsweise des Zündsicherungsmagneten 34 sind im Übrigen dem Fachmann geläufig, so dass auf die Beschreibung weiterer Einzelheiten verzichtet werden kann. Hervorzuheben ist nur noch, dass eine Rückstellfeder 31 bestrebt ist, den Anker über den als Federlager dienenden Ventilteller 30 vom Zündsicherungsmagneten 34 abzuziehen. By a partition wall 24, the interior of the upper part 2 and lower part 3 formed part of the housing 1 is divided into different rooms. Escaping in extension of the plunger 10, the partition wall 24 has an opening 32, the upper part 2 facing side of the valve seat 25 for the valve plate 21, and thus in conjunction with this, the main valve 20, while the other side of the opening 32 to a Zündsicherungsventil 26 associated valve seat 27 forms. Between the two valve seats 25; 27 opens into the opening 32 leading to Zündgasausgang 7 Zündgasbohrung 33. The Zündsicherungsventil 26 is influenced by a gas-tight in a bearing of the housing 1 thermoelectric Zündsicherungsmagneten 34, which is located downstream of the gas inlet 6. The thermoelectric Zündsicherungsmagnet 34 acts on an armature which is rigidly connected to a valve rod 29, on which the valve disc 30 of the Zündsicherungsventils 26 is attached. The thermoelectric ignition safety magnet 34 can be excited via the electronic control unit as well as via a thermocouple exposed to the pilot flame. Incidentally, the construction and mode of operation of the ignition-securing magnet 34 are familiar to the person skilled in the art, so that it is possible to dispense with the description of further details. It should be emphasized only that a return spring 31 strives to deduct the armature on the serving as a spring bearing valve plate 30 from the Zündsicherungsmagneten 34.
In Strömungsrichtung hinter der Inbetriebnahme befindet sich innerhalb des Gehäuses 1 die nicht dargestellte, da dem Fachmann bekannte Steuerungseinheit für die zum Hauptbrenner strömende Gasmenge. Sie besteht üblicherweise aus einem Schalter, der die Menge des zum Hauptbrenner strömenden Gases steuert. In the flow direction behind the startup is located within the housing 1, not shown, as known to those skilled control unit for the gas flowing to the main burner gas. It usually consists of a switch which controls the amount of gas flowing to the main burner.
Der Schalter ist beispielsweise so ausgeführt, dass eine modulierende Steuerung über ein erstes Ventil mit sprungförmiger Ein- und Ausschaltung im Teillastbereich über ein zweites Ventil bewirkt wird. Dabei wird der Teillastdurchfluss durch eine einstellbare Düse begrenzt. The switch is designed, for example, so that a modulating control is effected via a first valve with jump-like switching on and off in the partial load range via a second valve. The partial load flow is limited by an adjustable nozzle.
Ein mit dem Schalter in Verbindung stehende und längsbewegliche Betätigungsstange ragt aus dem gleichzeitig eine Lagerstelle für ihn bildenden Gehäuse 1 heraus und ist mit einem Bedienungselement 28 verbunden. A longitudinally movable actuating rod, which is connected to the switch and projects longitudinally, protrudes out of the housing 1 forming a bearing for it at the same time and is connected to a control element 28.
Die Wirkungsweise der Gasregelarmatur ist wie folgt: The operation of the gas control valve is as follows:
In der Fig. 1 ist die Gasregelarmatur im ausgeschalteten Zustand gezeigt. Das Bedienungselement 17 befindet sich unter der Wirkung der Rückholfeder 12 in seiner Ausgangslage. Dabei ist das Hauptventil 20 zwar geöffnet, aber der Zündsicherungsmagnet 34 ist nicht erregt, so dass das Zündsicherungsventil 26 geschlossen ist und kein Gas zum Brenner strömen kann. Um die Gasregelarmatur einzuschalten muss über das Bedienungselement 17 der Stößel 0 in seiner Längsrichtung gegen die Kraft der Rückholfeder 12 bewegt werden, so dass sich die in der Fig. 2 gezeigte Stellung ergibt. Dabei wird zuerst das Hauptventil 20 geschlossen und anschließend das Zündsicherungsventil 26 so weit geöffnet, dass der Anker am Zündsicherungsmagneten 34 anliegt. Das Zündgas kann nunmehr über die Zündgasbohrung 33 zum Zünd- gasausgang 7 und von dort über eine nicht dargestellte Zündgasleitung zum Zündbrenner strömen. In Fig. 1, the gas control valve is shown in the off state. The operating element 17 is under the action of the return spring 12 in its initial position. In this case, the main valve 20 is indeed open, but the Zündsicherungsmagnet 34 is not energized, so that the Zündsicherungsventil 26 is closed and no gas can flow to the burner. To turn on the gas control valve must be moved over the control element 17 of the plunger 0 in its longitudinal direction against the force of the return spring 12, so that there is the position shown in FIG. In this case, the main valve 20 is first closed and then the ignition safety valve 26 is opened so far that the armature is applied to the Zündsicherungsmagneten 34. The ignition gas can now flow via the Zündgasbohrung 33 to Zündgas gas outlet 7 and from there via a Zündgasleitung not shown to the pilot burner.
Über die Schaltkontur 15 und das Schaltelement 18 wird gleichzeitig der erste Mi- kroschalter 13 geschlossen und dadurch über ein an die elektronische Steuerein- heit gesandtes elektrisches Signal erreicht, dass einerseits über den ersten Mikro- schalter 13 ein Strom auf den Zündsicherungsmagneten 34 gegeben wird, und andererseits über die elektronische Steuereinheit das am Zündbrenner ausströmende Gas gezündet wird. Desweiteren wird über die Schaltkontur 16 das Schaltelement 19 des zweiten Mikroschalters 14 betätigt, so dass der Mikroschalter 14 seine Offenstellung einnimmt, wodurch der Thermostromkreis unterbrochen wird. At the same time, the first microswitch 13 is closed via the switching contour 15 and the switching element 18 and is thereby achieved via an electrical signal sent to the electronic control unit such that a current is applied to the ignition securing magnet via the first microswitch 13, and on the other hand ignited via the electronic control unit, the gas flowing out of the pilot burner gas. Furthermore, the switching element 19 of the second microswitch 14 is actuated via the switching contour 16, so that the microswitch 14 assumes its open position, whereby the thermal circuit is interrupted.
Sobald die Zündflamme brennt, wird über ein von der Zündflamme beeinflussbares Thermoelement ein Haltestrom zum Zündsicherungsmagneten 34 bereitgestellt, kann jedoch auf Grund des unterbrochenen Thermostromkreises noch nicht fließen. Erst wenn die manuelle Betätigung des Bedienungselementes 17 beendet wird, nimmt der Stößel wieder seine Ausgangslage ein, das Hauptventil 20 wird geöffnet und die Mikroschalter 13; 14 werden betätigt. Dabei erfolgt die Öffnung des ersten Mikroschalters 13 erst nachdem der zweite Mikroschalter bereits geschlossen hat, um sicher zu stellen, dass der Zündsicherungsmagnet 34, nunmehr über die anliegende Thermospannung, erregt bleibt. As soon as the ignition flame burns, a holding current to the ignition-securing magnet 34 is provided via a thermocouple which can be influenced by the pilot flame, but can not yet flow due to the interrupted thermo-current circuit. Only when the manual operation of the operating element 17 is terminated, the plunger returns to its initial position, the main valve 20 is opened and the micro-switch 13; 14 are pressed. In this case, the opening of the first microswitch 13 takes place only after the second microswitch has already closed to ensure that the Zündsicherungsmagnet 34, now on the applied thermoelectric voltage, remains energized.
Über das Bedienungselement 28 kann der Schalter in bekannter Art und Weise betätigt werden, indem es zuerst zu einem schlagartigen Öffnen des zweiten Ventils kommt. Die durch eine Öffnung begrenzte konstante Gasmenge strömt über den Hauptgasausgang 8 durch eine ebenfalls nicht dargestellte Hauptgasleitung zum Hauptbrenner und wird über die Zündflamme gezündet. Die Flammen brennen mit einer Minimalhöhe. Bei einer weiteren Betätigung des Bedienungsele- mentes 28 wird die zum Hauptgasbrenner strömende Gasmenge gleichmäßig vergrößert, da nunmehr das erste Ventil kontinuierlich öffnet, wodurch eine gleichmäßige Erhöhung der durch das erste Ventil durchströmenden Gasmenge erreicht wird. About the control element 28, the switch can be operated in a known manner, by first comes to a sudden opening of the second valve. The limited by an opening constant amount of gas flows through the main gas outlet 8 through a main gas line also not shown to the main burner and is ignited via the pilot flame. The flames burn with a minimum height. Upon further actuation of the operating Mentes 28, the amount of gas flowing to the main gas burner is uniformly increased, since now the first valve opens continuously, whereby a uniform increase in the amount of gas flowing through the first valve is achieved.
Wird das Bedienungselement 17 im aktivierten Zustand der Gasregelarmatur betätigt, so wird das Hauptventil 20 geschlossen und damit der Gasstrom zum Hauptbrenner unterbrochen. Über die ebenfalls gleichzeitig erfolgende Betätigung des Mikroschalters 14 wird der Thermostromkreis manuell unterbrochen. Der Zündsicherungsmagnet 34 wird nicht mehr erregt und somit das Zündsicherungsventil 26 nicht mehr gehalten. Sobald das Bedienungselement 17 nicht mehr betätigt wird und in seine Ausgangslage zurückgeht, geht auch das Zündsicherungsventil 26 in die Geschlossenstellung. Die Gasregelarmatur befindet sich im deaktivierten Zustand. If the control element 17 is actuated in the activated state of the gas control valve, the main valve 20 is closed and thus the gas flow to the main burner is interrupted. About the also simultaneously taking place of the microswitch 14, the thermal circuit is manually interrupted. The Zündsicherungsmagnet 34 is no longer energized and thus the Zündsicherungsventil 26 is no longer maintained. As soon as the control element 17 is no longer actuated and returns to its initial position, the ignition safety valve 26 also moves into the closed position. The gas control valve is in the deactivated state.
Die erfindungsgemäße Gasregelarmatur ist selbstredend nicht auf das dargestellte Ausführungsbeispiel beschränkt. Vielmehr sind Änderungen, Abwandlungen und Kombinationen möglich, ohne den Rahmen der Erfindung zu verlassen. So versteht es sich, dass beispielsweise die weiter oben genannte und beschriebene Steuerungseinheit für die zum Hauptbrenner strömende Gasmenge entfallen kann, wenn immer eine konstante Gasmenge zum Hauptbrenner strömen soll und es nicht erforderlich ist diesen Gasstrom zu regeln. Andererseits kann die Gasregelarmatur beispielsweise noch weitere Funktionseinheiten, wie beispielsweise einen Druckregler o.ä., aufweisen. W The gas control valve according to the invention is of course not limited to the illustrated embodiment. Rather, changes, modifications and combinations are possible without departing from the scope of the invention. So it is understood that, for example, the above-mentioned and described control unit for the gas flowing to the main burner gas quantity can be omitted if a constant amount of gas to flow to the main burner and it is not necessary to control this gas flow. On the other hand, the gas control valve, for example, even more functional units, such as a pressure regulator or the like, have. W
9 9
Aufstellung der Bezuqszeichen  List of the reference signs
1 Gehäuse 26 Zündsicherungsventil1 housing 26 ignition safety valve
2 Oberteil 27 Ventilsitz 2 upper part 27 valve seat
3 Unterteil 28 Bedienungselement 3 lower part 28 control element
4 Flachdichtung 29 Ventilstange 4 Flat gasket 29 Valve rod
5 Abdeckhaube 30 Ventilteller  5 cover 30 valve disc
6 Gaseingang 31 Rückstellfeder  6 gas inlet 31 return spring
7 Zündgasausgang 32 Öffnung  7 ignition gas outlet 32 opening
8 Hauptgasausgang 33 Zündgasbohrung 8 main gas outlet 33 pilot gas hole
9 Lagerstelle 34 Zündsicherungsmagnet9 bearing 34 ignition fuse magnet
10 Stößel 10 pestles
11 Rundring  11 round ring
12 Rückholfeder  12 return spring
13 erster Mikroschalter  13 first microswitch
14 zweiter Mikroschalter  14 second microswitch
15 Schaltkontur für den ersten  15 switching contour for the first
Mikroschalter  microswitch
16 Schaltkontur für den  16 switching contour for the
zweiten Mikroschalter  second microswitch
17 Bedienungselement  17 control element
18 Schaltelement des ersten  18 switching element of the first
Mikroschalters  microswitch
19 Schaltelement des zweiten  19 switching element of the second
Mikroschalters  microswitch
20 Hauptventil  20 main valve
21 Ventilteller  21 valve plates
22 Schließfeder  22 closing spring
23 Anschlag  23 stop
24 Trennwand  24 partition wall
25 Ventilsitz  25 valve seat

Claims

Patentanspruch  claim
Gasregelarmatur mit elektronischer Zündung für eine gasbetriebene Heizeinrichtung oder dergleichen mit einer von einer Spannungsquelle gespeisten elektronischen Steuereinheit, einem von einem Zündsicherungsmagneten (34) beeinflussbaren thermoelektrischen Zündsicherungsventil (26) und einem Hauptventil (20), die gemeinsam sowohl zur Zündsicherung als auch zur Aufspaltung des Gasstromes in Anteile für einen Hauptbrenner und für einen Zündbrenner dienen, und die mit weiteren, sekundären Funktionselementen, in einem mehrteiligen Gehäuse (1) untergebracht sind, einem axial zum Zündsicherungsventil (26) und zum Hauptventil (20) angeordneten Stößel (10), der aus dem gasführenden Raum des Gehäuses (1) herausragt und in Längsrichtung gegen die Kraft einer Rückholfeder (12) derart betätigbar ist, dass sich das Zündsicherungsventil (26) in der Offenstellung und das Hauptventil (20) in der Geschlossenstellung befindet, und mit einem auf dem Gehäuse (1) angeordneten und mit der elektronischen Steuereinheit verbundenen Mikroschalter (13), der bei einer manuellen Betätigung des Stößels (10) in Längsrichtung gegen die Kraft der Rückholfeder (12) seine Geschlossenstellung einnimmt, so dass bei ausgeschaltetem Zustand der Gasregelarmatur die elektronische Steuereinheit ein elektrisches Signal erhält, wodurch eine Aktivierung derselben und damit eine Zündung des durch das geöffnete Zündsicherungsventil (26) fließenden Gasstromes erfolgt, dadurch gekennzeichnet, dass bei Aktivierung der Gasregelarmatur der Zündsicherungsmagnet (34) über einen über den Mikroschalter (13) fließenden Strom erregt ist, und dass auf dem Gehäuse (1) ein zweiter, im Thermostromkreis in Reihe geschalteter Mikroschalter (14) angeordnet ist, der bei einer manuellen Betätigung des Stößels (10) in Längsrichtung gegen die Kraft der Rückholfeder (12) seine Offenstellung einnimmt, und dass beide Mikroschalter (13; 14) über auf dem Stößel (10) befindliche ihnen zugeordnete Schaltkonturen (15; 16) derart betätigbar sind, dass der erste Mikroschalter (13) geschlossen ist, ehe der zweite Mikroschalter (14) geöffnet ist, wohingegen bei Einnahme der Anfangsstellung des Stößels ( 0) unter der Kraft der Rückholfeder (12) der zweite Mikroschalter (14) geschlossen ist, ehe der erste Mikroschalter (13) geöffnet ist. Gas control valve with electronic ignition for a gas-powered heating device or the like with an electronic control unit powered by a voltage source, a thermoelectric ignition safety valve (26) which can be influenced by an ignition safety magnet (34) and a main valve (20) which is used both for ignition protection and for splitting the gas flow in portions for a main burner and for a pilot burner, and which are housed with other, secondary functional elements, in a multi-part housing (1), an axially to the Zündsicherungsventil (26) and the main valve (20) arranged plunger (10), the the gas-carrying space of the housing (1) protrudes and in the longitudinal direction against the force of a return spring (12) is actuated such that the Zündsicherungsventil (26) in the open position and the main valve (20) is in the closed position, and with a on the Housing (1) arranged and with the electronic control unit connected microswitch (13), which assumes its closed position in a longitudinal direction against the force of the return spring (12) during a manual operation of the plunger (10), so that when the gas control valve is switched off, the electronic control unit receives an electrical signal, whereby an activation the same, and thus ignition of the gas flowing through the open Zündsicherungsventil (26) gas flow, characterized in that upon activation of the gas control valve, the Zündsicherungsmagnet (34) via a via the micro switch (13) flowing current is energized, and that on the housing (1 ) a second, in the thermal circuit connected in series microswitch (14) is arranged, which assumes a manual operation of the plunger (10) in the longitudinal direction against the force of the return spring (12) its open position, and that both micro-switches (13; 14) can be actuated via switching contours (15, 16) located on the tappet (10) such that the first microswitch (13) is closed before the second microswitch (14) is opened, whereas when the initial position of the tappet ( 0) under the power of Return spring (12) of the second micro-switch (14) is closed, before the first micro-switch (13) is opened.
2. Gasregelarmatur nach Patentanspruch 1 , dadurch gekennzeichnet, dass die beiden Mikroschalter (13; 14) derart lagemäßig auf dem Oberteil (2) befestigt sind, dass die auf dem Bedienungselement (17) befindlichen Schaltkonturen (15; 16) identisch sind. 2. Gas control fitting according to claim 1, characterized in that the two microswitches (13; 14) are mounted on the upper part (2) in such a manner that the switching contours (15; 16) located on the operating element (17) are identical.
EP12784209.4A 2011-10-24 2012-10-22 Gas control valve Active EP2771617B8 (en)

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EP2771617B1 (en) 2017-09-27
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HK1198059A1 (en) 2015-03-06
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DE102011116797A1 (en) 2013-04-25
ES2653922T3 (en) 2018-02-09
EP2771617B8 (en) 2017-12-13
SI2771617T1 (en) 2018-01-31
HUE035155T2 (en) 2018-05-02
PT2771617T (en) 2017-12-21
US20140272740A1 (en) 2014-09-18
PL2771617T3 (en) 2018-03-30
CA2852147A1 (en) 2013-05-02
AU2012327503A1 (en) 2014-05-15

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