EP0939278A2 - Semi-automatic gas safety valve - Google Patents

Semi-automatic gas safety valve Download PDF

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Publication number
EP0939278A2
EP0939278A2 EP99103489A EP99103489A EP0939278A2 EP 0939278 A2 EP0939278 A2 EP 0939278A2 EP 99103489 A EP99103489 A EP 99103489A EP 99103489 A EP99103489 A EP 99103489A EP 0939278 A2 EP0939278 A2 EP 0939278A2
Authority
EP
European Patent Office
Prior art keywords
valve
yoke
magnetic
valve according
magnetic core
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.)
Withdrawn
Application number
EP99103489A
Other languages
German (de)
French (fr)
Other versions
EP0939278A3 (en
Inventor
Raffaele Morlino
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.)
Honeywell UGV Srl
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Honeywell UGV Srl
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 Honeywell UGV Srl filed Critical Honeywell UGV Srl
Publication of EP0939278A2 publication Critical patent/EP0939278A2/en
Publication of EP0939278A3 publication Critical patent/EP0939278A3/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/007—Regulating fuel supply using mechanical means
    • 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
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/14—Fuel valves electromagnetically operated

Definitions

  • thermoelectric ignition safety devices for gas burners, at which by means of a spring-loaded push button the closing body of a safety valve pushed away from his seat and with one attached to the end of his valve stem Anchor is pressed against the poles of an electromagnet. Once a flame is formed and generates a thermal current flowing through the excitation coil of the electromagnet, the resulting magnetic field holds the armature on the pole pieces and thus the Valve opened. Then the push button can be released and under the influence of your Return the return spring to the rest position. When the flame goes out, it disappears the magnetic field mentioned and the closing body returns under the influence of one of them assigned return spring in the closed position.
  • a security device is described for example in DE 15 29 076 B1.
  • EP 0 039 000 B1 shows a solenoid valve, in which within a hollow cylindrical excitation coil on the one hand a fixed magnetic core attached and to another movable magnetic core can be moved. This works through the fixed Actuator rod penetrating the magnetic core acts on the closing body of a valve. As soon as current flows through the excitation coil, the movable magnetic core is against the Drawn into the coil by force of a return spring and actuated via said Actuator rod the valve.
  • the invention relates to a through a push button operable and by an electromagnet in its open position held gas safety valve.
  • the invention is characterized by the features of Claim 1. This achieves an extreme compared to the prior art crowded and space-saving construction of the safety valve, which is used for supply lines Main gas burners with nominal widths from 3/8 inches are suitable and in Connection with a leak detector or a flame detector can be operated.
  • Advantageous embodiments of the invention result from the subclaims.
  • valve seat 4 Between the inlet 1 and outlet 2 of the valve housing 3 is the valve seat 4 and works with a closing body 5, under the influence of a return spring 6 stands.
  • the closing body 5 To open the valve 4, 5, the closing body 5 is connected via a valve rod 26 connected to the movable magnetic core 7, on the upper end of a push button 8th sits. If you press the push button 8 down, the valve rod 26 is the Closing body 5 lifted from the seat 4.
  • a fixed magnetic core 14 is used
  • the upper yoke plate 12 is a central one Has hole through which the movable magnetic core 7 protrudes.
  • the essentially cylindrical, movable magnetic core 7 carries on a rotating one Shoulder 15 is a pole plate 16 formed here as a ring disk made of magnetizable Material. This achieves a reduction in that for holding the magnetic core 7 excitation current required in the open position of the valve.
  • the yoke plate 12 extending pole plate lies down when the push button 8 is pressed against the top of the upper yoke plate and thereby forms a parallel Magnetic path, which the magnetic resistance of the magnetic circuit 11, 12, 13th belittles.
  • a non-magnetic on the upper end face of the fixed magnetic core 14 Separation layer e.g. a brass disc 18 or more brass plates or other non-magnetizable separating parts are provided. It recommends for the same reason itself, even on the top of the upper yoke plate 12, such a non-magnetic Separating ring 19 or the like to provide, for example an air gap, so that Pole plate 16 does not adhere to the top of the upper yoke plate 12.
  • the valve rod 26 is sealed by means of an O-ring 20 on the Valve housing attached base plate 21 on which the magnetic yoke 11, 12, 13th is attached.
  • Magnetic yoke and movable magnetic core 7 are of a cup-shaped Cover cap 22 surround which a in their wall facing away from the valve housing 3 has circular opening for the actuation of the push button 8. in the shown Embodiment is inserted into this opening, a nozzle 23 on its outer Scope is either completely transparent or at least has transparent parts, so you can see the position of the push button 8.
  • the opening is outward covered by an elastic lid 24 in the manner of a bottle cap, wherein this cover, as shown in FIG. 2, cannot be lost on one side by means of a tab 25 on the connecting piece 23 is attached.
  • the elastic closing force of the lid 24th so dimensioned that in such a case the force of the closing spring 6 is the closing force of the Overcomes cover 24 and pushes it up via pushbutton 26, 7, 8 and thus the valve closes. This is further supported by the fact that the top of the push button 8 abuts the cover 24 with little friction.
  • the push button 8 preferably consists of a through the nozzle 23 through clearly visible colored plastic.

Abstract

A cylindrical magnet core (7) displaceably extends into the inner space of a magnet coil (9) and supports at its one end a press button (8) whilst at its other end is a valve rod (26) and a valve closure body (5). A magnet yoke (11,12,13) holds the magnet coil (9) and has a yoke plate (12) with a hole surrounding the movable magnet core. A magnetizable pole plate (16) is fixed to the movable magnet core and extends parallel to the yoke plate. With the operated valve (5), the pole plate locates on the yoke plate and reduces the magnetic resistance of the magnet yoke. Between the movable magnet core and a stop (14) limiting its lift path is a thin nonmagnetic dividing layer.

Description

Es sind thermoelektrische Zündsicherungsvorrichtungen für Gasbrenner bekannt, bei denen mittels einer federbelasteten Drucktaste der Schließkörper eines Sicherheitsventils von seinem Sitz weggedrückt und mit einem am Ende seiner Ventilstange befestigten Anker gegen die Pole eines Elektromagneten gedrückt wird. Sobald eine Flamme gebildet ist und einen die Erregerspule des Elektromagneten durchfließenden Thermostrom erzeugt, hält das hierdurch entstehende Magnetfeld den Anker an den Polstücken fest und damit das Ventil geöffnet. Dann kann die Drucktaste losgelassen werden und unter dem Einfluß ihrer Rückstellfeder in die Ruhestellung zurückkehren. Erlischt die Flamme, so verschwindet das erwähnte Magnetfeld und der Schließkörper kehrt unter dem Einfluß einer ihm zugeordneten Rückstellfeder in die Schließlage zurück. Eine solche Sicherungseinrichtung ist beispielsweise in DE 15 29 076 B1 beschrieben.There are thermoelectric ignition safety devices for gas burners, at which by means of a spring-loaded push button the closing body of a safety valve pushed away from his seat and with one attached to the end of his valve stem Anchor is pressed against the poles of an electromagnet. Once a flame is formed and generates a thermal current flowing through the excitation coil of the electromagnet, the resulting magnetic field holds the armature on the pole pieces and thus the Valve opened. Then the push button can be released and under the influence of your Return the return spring to the rest position. When the flame goes out, it disappears the magnetic field mentioned and the closing body returns under the influence of one of them assigned return spring in the closed position. Such a security device is described for example in DE 15 29 076 B1.

Weiterhin zeigt EP 0 039 000 B1 ein Magnetventil, bei dem innerhalb einer hohlzylindrischen Erregerspule einerseits ein ortsfester Magnetkern angebracht und zum anderen ein beweglicher Magnetkern versehiebbar ist. Dieser wirkt über eine den festen Magnetkern durchsetzende Betätigerstange auf den Schließkörper eines Ventils einwirkt. Sobald Strom durch die Erregerspule fließt, wird der bewegliche Magnetkern gegen die Kraft einer Rückstellfeder in die Spule hineingezogen und betätigt über die genannte Betätigerstange das Ventil.Furthermore, EP 0 039 000 B1 shows a solenoid valve, in which within a hollow cylindrical excitation coil on the one hand a fixed magnetic core attached and to another movable magnetic core can be moved. This works through the fixed Actuator rod penetrating the magnetic core acts on the closing body of a valve. As soon as current flows through the excitation coil, the movable magnetic core is against the Drawn into the coil by force of a return spring and actuated via said Actuator rod the valve.

Ausgehend vom eingangs genannten Stand der Technik betrifft die Erfindung ein durch eine Drucktaste betätigbares und durch einen Elektromagneten in seiner Offenstellung gehaltenes Gassicherheitsventil. Die Erfindung ist gekennzeichnet durch die Merkmale des Anspruchs 1. Man erzielt hierdurch gegenüber dem Stand der Technik einen äußerst gedrängten und raumsparenden Aufbau des Sicherheitsventils, welches für Zuleitungen zu Gashauptbrennern mit Nennweiten ab beispielsweise 3/8 Zoll geeignet ist und in Verbindung mit einem Leckdetektor oder einem Flammendetektor betrieben werden kann. Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen. Starting from the prior art mentioned at the outset, the invention relates to a through a push button operable and by an electromagnet in its open position held gas safety valve. The invention is characterized by the features of Claim 1. This achieves an extreme compared to the prior art crowded and space-saving construction of the safety valve, which is used for supply lines Main gas burners with nominal widths from 3/8 inches are suitable and in Connection with a leak detector or a flame detector can be operated. Advantageous embodiments of the invention result from the subclaims.

Die Erfindung wird nachfolgend anhand eines in den Zeichnungen wiedergegebenen Ausführungsbeispiels erläutert. Darin zeigt:

Figur 1
eine Draufsicht auf das Ventil;
Figur 2
einen Längsschnitt durch das Ventil gemäß der Schnittlinie A-A von Figur 1;
und
Figur 3
einen hierzu rechtwinkligen Längsschnitt längs der Linie B-B in Figur 1.
The invention is explained below with reference to an embodiment shown in the drawings. It shows:
Figure 1
a plan view of the valve;
Figure 2
a longitudinal section through the valve along the section line AA of Figure 1;
and
Figure 3
a longitudinal section at right angles along the line BB in Figure 1.

Zwischen Einlaß 1 und Auslaß 2 des Ventilgehäuses 3 befindet sich der Ventilsitz 4 und arbeitet mit einem Schließkörper 5 zusammen, der unter dem Einfluß einer Rückstellfeder 6 steht. Zum Öffnen des Ventils 4, 5 ist der Schließkörper 5 über eine Ventilstange 26 mit dem beweglichen Magnetkern 7 verbunden, auf dessen oberem Ende ein Druckknopf 8 sitzt. Drückt man den Druckknopf 8 nach unten, so wird über die Ventilstange 26 der Schließkörper 5 vom Sitz 4 abgehoben. Wenn der Schließkörper in dieser Offenstellung ohne weitere Betätigung des Druckknopfs 8 gehalten werden soll, muß ein entsprechender Haltestrom durch die Erregerspule 9 eines Elektromagneten fließen, der außer dieser Spule 9 ein im wesentlichen U-förmiges oder topfförmiges magnetisches Rückschlußjoch 10 aufweist. Dieses hat eine untere Jochplatte 11 sowie eine obere Jochplatte 12, welche über einen Mittelsteg 13 zu einem Magnetkreis verbunden sind. In die untere Jochplatte 11 ist ein feststehender Magnetkern 14 eingesetzt, während die obere Jochplatte 12 ein zentrales Loch hat, durch welches der bewegliche Magnetkern 7 hindurchragt.Between the inlet 1 and outlet 2 of the valve housing 3 is the valve seat 4 and works with a closing body 5, under the influence of a return spring 6 stands. To open the valve 4, 5, the closing body 5 is connected via a valve rod 26 connected to the movable magnetic core 7, on the upper end of a push button 8th sits. If you press the push button 8 down, the valve rod 26 is the Closing body 5 lifted from the seat 4. When the closing body is in this open position to be held without further actuation of the push button 8, a corresponding must Holding current flow through the excitation coil 9 of an electromagnet, which except this coil 9 an essentially U-shaped or cup-shaped magnetic yoke 10 having. This has a lower yoke plate 11 and an upper yoke plate 12, which over a central web 13 are connected to a magnetic circuit. In the lower yoke plate 11 is a fixed magnetic core 14 is used, while the upper yoke plate 12 is a central one Has hole through which the movable magnetic core 7 protrudes.

Der im wesentlichen zylindrische, bewegliche Magnetkern 7 trägt auf einer umlaufenden Schulter 15 eine hier als Ringscheibe ausgebildete Polplatte 16 aus magnetisierbarem Material. Hierdurch erreicht man eine Verringerung des zum Festhalten des Magnetkerns 7 in der Offenstellung des Ventils erforderlichen Erregerstroms. Die sich parallel zur oberen Jochplatte 12 erstreckende Polplatte legt sich nämlich bei eingedrückter Drucktaste 8 gegen die Oberseite der oberen Jochplatte und bildet hierdurch einen parallelen Magnetpfad, welcher den magnetischen Widerstand des Magnetkreises 11, 12, 13 herabsetzt. Um zu verhindern, daß bei Wegfall des Erregerstroms das Ventil nicht oder nur verzögert schließt, weil die Stirnfläche 17 des beweglichen Magnetkerns 7 an der gegenüberliegenden Stirnfläche des ortsfesten Magnetkerns 14 haftet, ist es von Vorteil, wenn auf der oberen Stirnseite des feststehenden Magnetkerns 14 eine nicht-magnetische Trennschicht, z.B. eine Messingsscheibe 18 oder mehrere Messingplättchen oder sonstige nicht-magnetisierbare Trennteile vorgesehen sind. Aus dem gleichen Grund empfiehlt es sich, auch auf der Oberseite der oberen Jochplatte 12 einen solchen nicht-magnetischen Trennring 19 oder dergleichen vorzusehen, beispielsweise einen Luftspalt, damit die Polplatte 16 nicht an der Oberseite der oberen Jochplatte 12 haftet.The essentially cylindrical, movable magnetic core 7 carries on a rotating one Shoulder 15 is a pole plate 16 formed here as a ring disk made of magnetizable Material. This achieves a reduction in that for holding the magnetic core 7 excitation current required in the open position of the valve. Which are parallel to the upper one The yoke plate 12 extending pole plate lies down when the push button 8 is pressed against the top of the upper yoke plate and thereby forms a parallel Magnetic path, which the magnetic resistance of the magnetic circuit 11, 12, 13th belittles. To prevent the valve not or only if the excitation current is lost Delays closes because the end face 17 of the movable magnetic core 7 on the opposite end face of the fixed magnetic core 14 adheres, it is advantageous if a non-magnetic on the upper end face of the fixed magnetic core 14 Separation layer, e.g. a brass disc 18 or more brass plates or other non-magnetizable separating parts are provided. It recommends for the same reason itself, even on the top of the upper yoke plate 12, such a non-magnetic Separating ring 19 or the like to provide, for example an air gap, so that Pole plate 16 does not adhere to the top of the upper yoke plate 12.

Die Ventilstange 26 ist mittels eines O-Rings 20 abgedichtet durch eine auf das Ventilgehäuse aufgesetzte Bodenplatte 21 geführt, an welcher das Magnetjoch 11, 12, 13 befestigt ist. Magnetjoch und beweglicher Magnetkern 7 sind von einer topfförmigen Abdeckkappe 22 umgeben, welche in ihrer im Ventilgehäuse 3 abgewandten Wand eine kreisförmige Öffnung für die Betätigung der Drucktaste 8 aufweist. im gezeigten Ausführungsbeispiel ist in diese Öffnung ein Stutzen 23 eingesetzt, der an seinem äußeren Umfang entweder durchweg transparent ist oder zumindest transparente Teile hat, damit man die Stellung des Druckknopfes 8 erkennen kann. Die Öffnung ist nach außen hin durch einen elastischen Deckel 24 nach Art eines Flaschenverschlusses abgedeckt, wobei dieser Deckel, wie Figur 2 zeigt, einseitig mittels einer Lasche 25 unverlierbar am Stutzen 23 befestigt ist. Um zu verhindern, daß das Ventil 4, 5 ohne Erregerstrom durch die Spule 9 offengehalten wird, indem jemand ein Abstandsstück zwischen den Deckel 24 und den nach unten gedrückten Druckknopf 8 einlegt, ist die elastische Schließkraft des Deckels 24 so bemessen, daß in einem solchen Falle die Kraft der Schließfeder 6 die Schließkraft des Deckels 24 überwindet und diesen über die Drucktaste 26, 7, 8 nach oben drückt und damit das Ventil schließt. Dies wird noch dadurch unterstützt, daß die Oberseite des Druckknopfs 8 reibungsarm am Deckel 24 anliegt. Der Druckknopf 8 besteht vorzugsweise aus einem durch den Stutzen 23 hindurch gut sichtbaren farbigen Kunststoff.The valve rod 26 is sealed by means of an O-ring 20 on the Valve housing attached base plate 21 on which the magnetic yoke 11, 12, 13th is attached. Magnetic yoke and movable magnetic core 7 are of a cup-shaped Cover cap 22 surround which a in their wall facing away from the valve housing 3 has circular opening for the actuation of the push button 8. in the shown Embodiment is inserted into this opening, a nozzle 23 on its outer Scope is either completely transparent or at least has transparent parts, so you can see the position of the push button 8. The opening is outward covered by an elastic lid 24 in the manner of a bottle cap, wherein this cover, as shown in FIG. 2, cannot be lost on one side by means of a tab 25 on the connecting piece 23 is attached. To prevent the valve 4, 5 without excitation current through the coil 9 is kept open by someone placing a spacer between the lid 24 and the presses down button 8, the elastic closing force of the lid 24th so dimensioned that in such a case the force of the closing spring 6 is the closing force of the Overcomes cover 24 and pushes it up via pushbutton 26, 7, 8 and thus the valve closes. This is further supported by the fact that the top of the push button 8 abuts the cover 24 with little friction. The push button 8 preferably consists of a through the nozzle 23 through clearly visible colored plastic.

Claims (9)

Durch eine Drucktaste betätigbares und durch einen Elektromagneten in seiner Offenstellung gehaltenes Gassicherheitsventil mit folgenden Merkmalen: a) ein zylindrischer, in den Innenraum einer Magnetspule (9) hineinragender verschiebbarer Magnetkern (7) trägt an seinem einen Ende einen Druckknopf (8) und an seinem anderen Ende eine Ventilstange (26) samt Ventilschließkörper (5); b) ein die Magnetspule (9) haltendes Magnetjoch (11, 12, 13) verfügt über eine Jochplatte (12), die ein den beweglichen Magnetkern (7) umgebendes Loch aufweist; c) eine am beweglichen Magnetkern (7) befestigte und sich parallel zur Jochplatte (12) erstreckende, magnetisierbare Polplatte (16) liegt bei betätigtem Ventil (4, 5) an der Jochplatte (12) an und setzt den magnetischen Widerstand des Magnetjochs herab; und d) zwischen dem beweglichen Magnetanker (7) und einem seinen Hubweg begrenzenden Anschlag (14) ist eine dünne nicht-magnetische Trennschicht (18) vorgesehen. Gas safety valve which can be actuated by a push button and is held in its open position by an electromagnet with the following features: a) a cylindrical, in the interior of a magnet coil (9) projecting displaceable magnetic core (7) carries at one end a push button (8) and at its other end a valve rod (26) including valve closing body (5); b) a magnetic yoke (11, 12, 13) holding the magnetic coil (9) has a yoke plate (12) which has a hole surrounding the movable magnetic core (7); c) a magnetizable pole plate (16) attached to the movable magnetic core (7) and extending parallel to the yoke plate (12) is in contact with the yoke plate (12) when the valve (4, 5) is actuated and reduces the magnetic resistance of the magnetic yoke; and d) a thin non-magnetic separating layer (18) is provided between the movable magnet armature (7) and a stop (14) limiting its stroke path. Ventil nach Anspruch 1, dadurch gekennzeichnet, daß zwischen Polplatte (16) und Jochplatte (12) ein kleiner Luftspalt ausgebildet oder eine dünne, nicht-magnetische Trennschicht (19) vorgesehen ist.Valve according to claim 1, characterized in that a small air gap is formed between the pole plate (16) and yoke plate (12) or a thin, non-magnetic separating layer (19) is provided. Ventil nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Trennschicht (18, 19) als Ringscheibe ausgebildet t ist.Valve according to claim 1 or 2, characterized in that the separating layer (18, 19) is designed as an annular disc t. Ventil nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß an der Ventilstange (26), dem beweglichen Magnetkern (7) oder dem Ventilschließkörper (5) eine Rückstellfeder (6) angreift, die sich mit ihrem anderen Ende am Ventilgehäuse (3) abstützt.Valve according to one of claims 1 to 3, characterized in that a return spring (6) acts on the valve rod (26), the movable magnetic core (7) or the valve closing body (5), the other end of which rests on the valve housing (3). supports. Ventil nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Polplatte (16) auf einer Ringschulter (15) des beweglichen Magnetkerns (7) aufliegt. Valve according to one of claims 1 to 4, characterized in that the pole plate (16) rests on an annular shoulder (15) of the movable magnetic core (7). Ventil nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Polplatte (16) kreisförmig ist.Valve according to one of claims 1 to 5, characterized in that the pole plate (16) is circular. Ventil nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Magnetjoch (11, 12, 13) von einer am Ventilgehäuse (3) gehaltenen, topfförmigen Kappe (22) umschlossen ist, welche in ihrer Stirnwand eine Öffnung zum Betätigen der Drucktaste (8, 6) aufweist.Valve according to one of claims 1 to 6 , characterized in that the magnetic yoke (11, 12, 13) is enclosed by a cup-shaped cap (22) held on the valve housing (3), which has an opening in its front wall for actuating the pushbutton ( 8, 6). Ventil nach Anspruch 7, dadurch gekennzeichnet, daß an der Stirnwand ein den Druckknopf (8) umgebender ringförmiger Stutzen (23) aus zumindest teilweise durchsichtigem Werkstoff vorgesehen ist.Valve according to Claim 7, characterized in that an annular connecting piece (23) made of at least partially transparent material and surrounding the push button (8) is provided on the end wall. Ventil nach Anspruch 8, dadurch gekennzeichnet, daß die Öffnung des Stutzens (23) durch einen am Stutzen unverlierbar gehaltenen elastischen Deckel (24) abgedeckt ist, an welchem der Druckknopf (8) reibungsarm anliegt, und daß die Schließkraft des Deckels geringer ist als die Kraft der Rückstellfeder (6).Valve according to claim 8, characterized in that the opening of the connection piece (23) is covered by an elastic cover (24) held captively on the connection piece, to which the push button (8) bears with low friction, and that the closing force of the cover is less than that Force of the return spring (6).
EP99103489A 1998-02-27 1999-02-23 Semi-automatic gas safety valve Withdrawn EP0939278A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19808391A DE19808391A1 (en) 1998-02-27 1998-02-27 Semi-automatic gas safety valve
DE19808391 1998-02-27

Publications (2)

Publication Number Publication Date
EP0939278A2 true EP0939278A2 (en) 1999-09-01
EP0939278A3 EP0939278A3 (en) 2001-10-17

Family

ID=7859155

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Application Number Title Priority Date Filing Date
EP99103489A Withdrawn EP0939278A3 (en) 1998-02-27 1999-02-23 Semi-automatic gas safety valve

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EP (1) EP0939278A3 (en)
DE (1) DE19808391A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102359646A (en) * 2011-09-07 2012-02-22 上海埃科燃气测控设备有限公司 Switch device for driving and locking guide type electromagnetic gas quick action emergency valve

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007025567A1 (en) * 2007-05-31 2008-12-11 Robert Bosch Gmbh Electro-pneumatic valve, in particular pilot valve of a pneumatic directional control valve

Citations (2)

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Publication number Priority date Publication date Assignee Title
DE1529076A1 (en) 1966-11-05 1969-11-27 Junkers & Co Thermoelectric fuse device with two push buttons
EP0039000B1 (en) 1980-04-25 1983-04-27 Honeywell B.V. Gas pressure regulator

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Publication number Priority date Publication date Assignee Title
US2126587A (en) * 1934-09-10 1938-08-09 Milwaukee Gas Specialty Co Thermoelectric safety valve
US2207771A (en) * 1936-04-29 1940-07-16 Milwaukee Gas Specialty Co Thermoelectric safety valve and switch
DE1806094B1 (en) * 1968-10-30 1970-01-02 Automatic Switch Co Electromagnetic valve
US3952774A (en) * 1975-01-24 1976-04-27 General Gas Light Company Electrically operated mini-valve
US4034911A (en) * 1975-12-04 1977-07-12 Emerson Electric Co. Burner control system
DE3014959A1 (en) * 1980-04-18 1981-10-22 Gecos Armaturen GmbH, 4800 Bielefeld Hand-operated stop valve - has magnet on housing enclosing spindle and working with armature plate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1529076A1 (en) 1966-11-05 1969-11-27 Junkers & Co Thermoelectric fuse device with two push buttons
EP0039000B1 (en) 1980-04-25 1983-04-27 Honeywell B.V. Gas pressure regulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102359646A (en) * 2011-09-07 2012-02-22 上海埃科燃气测控设备有限公司 Switch device for driving and locking guide type electromagnetic gas quick action emergency valve

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Publication number Publication date
EP0939278A3 (en) 2001-10-17
DE19808391A1 (en) 1999-09-09

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