AT397001B - DIAPHRAGM VALVE - Google Patents

DIAPHRAGM VALVE Download PDF

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Publication number
AT397001B
AT397001B AT155791A AT155791A AT397001B AT 397001 B AT397001 B AT 397001B AT 155791 A AT155791 A AT 155791A AT 155791 A AT155791 A AT 155791A AT 397001 B AT397001 B AT 397001B
Authority
AT
Austria
Prior art keywords
valve
valve body
membrane
valve seat
die
Prior art date
Application number
AT155791A
Other languages
German (de)
Other versions
ATA155791A (en
Original Assignee
Vaillant Gmbh
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 Gmbh filed Critical Vaillant Gmbh
Priority to AT155791A priority Critical patent/AT397001B/en
Priority to DE9210353U priority patent/DE9210353U1/en
Publication of ATA155791A publication Critical patent/ATA155791A/en
Application granted granted Critical
Publication of AT397001B publication Critical patent/AT397001B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0413Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0433Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with vibration preventing means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/08Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage
    • F16K17/085Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage with diaphragm
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00Control of fluid pressure
    • G05D16/04Control of fluid pressure without auxiliary power
    • G05D16/06Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0644Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
    • G05D16/0655Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using one spring-loaded membrane
    • G05D16/0658Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using one spring-loaded membrane characterised by the form of the obturator

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Fluid Pressure (AREA)
  • Safety Valves (AREA)

Claims (1)

AT397001B' Die vorliegende Erfindung bezieht sich auf ein Membranventil gemäß dem Oberbegriff des einzigen Patentanspruches. Membranventile werden beispielsweise für Gasdruckregler verwendet. Sie sind Teil von Servodruckreglem, mit denen der eigentliche Gasdruckregler gesteuert wird. S Ein bekanntes Membranventil dieser Art ist aus einer Druckgußplatte gebildet, die eine Stufenbohrung aufweist, deren Stufe den Ventilsitz bildet, wobei im Inneren der Stufenbohrung ein Ventilkörper vorgesehen ist, der sich über eine Feder gegenüber der Stufe abstützt. Ein Niederhalter verhinderte das Herausfallen des in der Stufenbohrung mit Spiel beweglichen Ventilkörpers. Der Ventilkörper selbst wird von der Membran angelenkt. Bedingt durch den relativ kurzen Ringspalt zwischen Ventilkörper und Stufenbohrung, kann es zu 10 Schiefstellungen des Ventilkörpers kommen, so daß die Drosselung des Ventilsitzes starken Schwankungen unterworfen war. Weiterhin bekannt sind beispielsweise in der EP-PS 198 381 und in der US-PS 36 25 247 beschriebene Ventilanordnungen, bei denen der Ventilkörper eine Membran durchsetze Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Membranventil zu schaffen, dessen Lage- und 15 Erschütterungsempfindlichkeit verringert sind, wobei insbesondere Schiefstellungen des Ventilkörpers zu vermeiden sind. Die Lösung der Aufgabe besteht erfindungsgemäß in den kennzeichnenden Merkmalen des Patentanspruches. Durch die starre Verknüpfung des Ventilkörpers mit der Ausformung der Membran wird der Vorteil erreicht, daß der Ventilkörper bezüglich des Ventilsitzes einwandfrei geführt wird und daß keine weiteren das Ergebnis 20 verfälschenden Bauelemente Einfluß gewinnen können. Die Figur 1 zeigt einen Querschnitt durch ein erfindungsgemäß ausgebildetes Membranventil. Eine Druckgußplatte (1) ist Teil eines Servomembran-Gasdruckreglers. Die Druckgußplatte (1) weist eine Unterseite (2) und eine Oberseite (3) auf und ist von einem nicht weiter dargestellten Gehäuse aufgenommen. In der Druckgußplatte (1) ist eine Bohrung (4) vorgesehen, in die ein Ventilsitzkörper (5) eingesetzt ist Er kann 25 eingeklebt, eingeschraubt, eingelötet oder sonstwie gasdicht befestigt sein. Er kann auch einteilig mit dem Material der Druckgußplatte (1) ausgebildet sein. Der Ventilsitzkörper (5) weist eine ballige Oberseite (6) auf, die die Oberseite (3) der Druckgußplatte (1) überragt. An der höchsten Erhebung der Oberseite (6) des Ventilsitzkörpers mündet ein Kanal (7). Der Ventilsitzkörper (5) arbeitet mit einem Ventilkörper (8) zusammen, der aus einem Zylinderschacht (9) und 30 einem Kragen (10) besteht, wobei die dem Ventilsitzkörper (5) zugewandte Fläche (16) des Kragens (10) im wesentlichen plan ist. Eine geringförmige Balligkeit oder Krümmung dieser Fläche (16) würde keine Rolle spielen. Die Oberseite. (3) der Druckgußplatte (1) ist von einer Membran (11) teilweise abgedeckt, die eine topfförmige Ausformung (12) aufweist, in die der Zylinderschaft (9) eingesetzt ist. Auf der der Oberseite (3) abgewandten Seite der Membran (11) ist ein Teller (13) aufgesetzt, auf den sich eine Druckfeder (14) abstützt, 35 deren anderes Ende am Gehäuse (15) an einem einstellbaren Federlager äbstützt. Das dargestellte Ventil arbeitet als Überströmventil, das heißt, tritt im Kanal (7) ein Druck auf, der größer als der von der Feder (14) auf den Ventilkörper (8) ausgeübte Druck ist, so öffnet das Ventil. Einen gewissen Einfluß auf die Öffnungs- bzw. Schließcharakteristik des Ventils nimmt noch der Druck, der in den Raum (24) unterhalb oder Raum (25) oberhalb der Membran (11) eingebracht werden kann. Ein steigender Druck im Raum 40 (25) unterstützt die (Schließ-) Wirkung der Feder (14), ein Druck im Raum (24) schwächt sie. Da der Ventilkörper (8) von der Membran (11) starr geführt ist, sind Querverschiebungen des Ventilkörpers (8) gegenüber dem Ventilsitz (5) ausgeschlossen. 45 PATENTANSPRUCH 50 Membranventil mit einem von der Membran angelenkten, unter der Wirkung einer Feder stehenden Ventilkörper und einem Ventilsitzkörper, den ein Kanal durchsetzt, wobei der Ventilkörper als mit der Membran starr verbundenes Bauteil mit einer dem Ventilsitzkörper zugewandten Fläche dessen 55 Kanalmündung abdeckt, dadurch gekennzeichnet, daß der Ventilkörper (8) als mit einem Kragen (10) versehener Zylinderschaft (9) ausgebildet ist, wobei der Zylinderschaft (9) in eine topfförmige Ausformung (12) der Membran (11) eingedrückt ist. Hiezu 1 Blatt Zeichnung -2- 60AT397001B 'The present invention relates to a diaphragm valve according to the preamble of the single claim. Diaphragm valves are used, for example, for gas pressure regulators. They are part of servo pressure regulators with which the actual gas pressure regulator is controlled. S A known diaphragm valve of this type is formed from a die-cast plate which has a stepped bore, the step of which forms the valve seat, a valve body being provided in the interior of the stepped bore, which is supported against the step via a spring. A hold-down device prevented the valve body from moving in the stepped bore with play. The valve body itself is articulated by the membrane. Due to the relatively short annular gap between the valve body and the stepped bore, there can be 10 misalignments of the valve body, so that the throttling of the valve seat was subject to strong fluctuations. Also known are, for example, valve arrangements described in EP-PS 198 381 and US Pat. No. 3,625,247, in which the valve body pushes through a membrane. The present invention is based on the task of creating a membrane valve whose position and vibration sensitivity are reduced are, whereby in particular misalignments of the valve body are to be avoided. The object is achieved according to the invention in the characterizing features of the claim. Due to the rigid connection of the valve body with the shape of the membrane, the advantage is achieved that the valve body is properly guided with respect to the valve seat and that no further components falsifying the result can gain influence. FIG. 1 shows a cross section through a diaphragm valve designed according to the invention. A die-cast plate (1) is part of a servo membrane gas pressure regulator. The die-cast plate (1) has an underside (2) and an upper side (3) and is accommodated in a housing (not shown). A bore (4) is provided in the die-cast plate (1), into which a valve seat body (5) is inserted. It can be glued, screwed, soldered or otherwise attached in a gas-tight manner. It can also be formed in one piece with the material of the die-cast plate (1). The valve seat body (5) has a spherical upper side (6) which projects above the upper side (3) of the die-cast plate (1). A channel (7) opens at the highest elevation of the top (6) of the valve seat body. The valve seat body (5) works together with a valve body (8), which consists of a cylinder shaft (9) and 30 a collar (10), the surface (16) of the collar (10) facing the valve seat body (5) being essentially flat is. A slight crowning or curvature of this surface (16) would not matter. The top. (3) the die-cast plate (1) is partially covered by a membrane (11) which has a cup-shaped shape (12) into which the cylindrical shaft (9) is inserted. On the side of the membrane (11) facing away from the upper side (3), a plate (13) is placed, on which a compression spring (14) is supported, the other end of which supports the housing (15) on an adjustable spring bearing. The valve shown works as an overflow valve, that is, if a pressure occurs in the channel (7) that is greater than the pressure exerted by the spring (14) on the valve body (8), the valve opens. The pressure which can be introduced into the space (24) below or space (25) above the membrane (11) also has a certain influence on the opening or closing characteristics of the valve. A rising pressure in space 40 (25) supports the (closing) action of spring (14), a pressure in space (24) weakens it. Since the valve body (8) is rigidly guided by the membrane (11), transverse displacements of the valve body (8) with respect to the valve seat (5) are excluded. 45 PATENT CLAIM 50 Diaphragm valve with a valve body articulated by the diaphragm, under the action of a spring, and a valve seat body through which a channel passes, the valve body, as a component rigidly connected to the membrane with a surface facing the valve seat body, covering the 55 channel opening thereof, characterized that the valve body (8) is designed as a cylindrical shaft (9) provided with a collar (10), the cylindrical shaft (9) being pressed into a cup-shaped shape (12) of the membrane (11). For this purpose 1 sheet of drawing -2- 60
AT155791A 1991-08-06 1991-08-06 DIAPHRAGM VALVE AT397001B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT155791A AT397001B (en) 1991-08-06 1991-08-06 DIAPHRAGM VALVE
DE9210353U DE9210353U1 (en) 1991-08-06 1992-08-03 Diaphragm valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT155791A AT397001B (en) 1991-08-06 1991-08-06 DIAPHRAGM VALVE

Publications (2)

Publication Number Publication Date
ATA155791A ATA155791A (en) 1993-05-15
AT397001B true AT397001B (en) 1994-01-25

Family

ID=3515969

Family Applications (1)

Application Number Title Priority Date Filing Date
AT155791A AT397001B (en) 1991-08-06 1991-08-06 DIAPHRAGM VALVE

Country Status (2)

Country Link
AT (1) AT397001B (en)
DE (1) DE9210353U1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046351B (en) * 1953-06-02 1958-12-11 Gustav Neuhaus Dipl Ing Valve seat designed for flow divider with diaphragm valve
US3625247A (en) * 1969-10-27 1971-12-07 Eclipse Fuel Eng Co Pressure regulator with pressure relief valve
DE2546488A1 (en) * 1975-10-17 1977-04-21 Itw Ateco Gmbh DIAPHRAGM VALVE
EP0198381A2 (en) * 1985-04-11 1986-10-22 Tom McGuane Industries, Inc. Fuel pressure regulator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046351B (en) * 1953-06-02 1958-12-11 Gustav Neuhaus Dipl Ing Valve seat designed for flow divider with diaphragm valve
US3625247A (en) * 1969-10-27 1971-12-07 Eclipse Fuel Eng Co Pressure regulator with pressure relief valve
DE2546488A1 (en) * 1975-10-17 1977-04-21 Itw Ateco Gmbh DIAPHRAGM VALVE
EP0198381A2 (en) * 1985-04-11 1986-10-22 Tom McGuane Industries, Inc. Fuel pressure regulator

Also Published As

Publication number Publication date
ATA155791A (en) 1993-05-15
DE9210353U1 (en) 1992-09-24

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