EP0689008B1 - Durchflussregelungsventil mit Doppelsteuerung - Google Patents

Durchflussregelungsventil mit Doppelsteuerung Download PDF

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Publication number
EP0689008B1
EP0689008B1 EP19950420166 EP95420166A EP0689008B1 EP 0689008 B1 EP0689008 B1 EP 0689008B1 EP 19950420166 EP19950420166 EP 19950420166 EP 95420166 A EP95420166 A EP 95420166A EP 0689008 B1 EP0689008 B1 EP 0689008B1
Authority
EP
European Patent Office
Prior art keywords
valve
valve needle
needle
translation
intermediate sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19950420166
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English (en)
French (fr)
Other versions
EP0689008A1 (de
Inventor
Alain Huguet
Philippe Camelot
Pascal Girardin
Gérard Garand
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.)
Application des Gaz SA
Original Assignee
Application des Gaz SA
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 Application des Gaz SA filed Critical Application des Gaz SA
Publication of EP0689008A1 publication Critical patent/EP0689008A1/de
Application granted granted Critical
Publication of EP0689008B1 publication Critical patent/EP0689008B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/28—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid in association with a gaseous fuel source, e.g. acetylene generator, or a container for liquefied gas

Definitions

  • the present invention relates to the control of flow rate of a fluid, for example a combustible gas, at by means of a needle valve.
  • a fluid for example a combustible gas
  • a needle valve Generally, such device is understood or integrated into a structure or together, comprising a functional organ allowing dispense or consume the controlled fluid, all forming an apparatus dispensing or consuming said fluid.
  • structure any set of components or other means, such as chassis or bodywork, completing the control system and the functional organ, and forming with it a complete unit in working order.
  • Such functions and results are particularly important for a gas torch, for determine in particular a "pilot" position of the flame, corresponding to the relatively low flow, and a “full flame” position, corresponding to the maximum flow combustible gas.
  • the fully closed position of the valve is obtained by screwing the needle in relation to the sheath intermediate, thanks to the control wheel.
  • This movement screwing causes, firstly the decline of said sheath towards the nut, against the return means, constituted by the helical spring, then the full compression of said spring, with contiguous turns, between the sheath intermediate and nut, and finally the shutter complete with seat opening through active end of the needle, corresponding to the zero value of the flow of the combustible gas.
  • the minimum opening position of the tap is determined in part by the loosening or the decompression of the coil spring, pushing the intermediate sleeve opposite the nut.
  • the fully closed valve position is obtained after compression of several turns of the spring, and the user therefore does not have the sensation of a frank stop to determine whether it has reached or not, the fully closed tap position.
  • the object of the present invention is to modify the construction described and discussed previously, so to be able to positively and directly obtain a position to close the tap completely, without depending on the operation of a spring or return means for to do.
  • the present invention further provides the following advantages.
  • the needle is completely guided and maintained along its axis, with play limited functional, in the intermediate sheath, itself precisely positioned on the body of the tap.
  • the effort exerted on the needle control end, by the element is not likely to modify, by example to offset, significantly the support of the active end of the needle against its seat.
  • the arrangement and / or positioning according to the present invention of the recall means allow to continuously recall a directed thrust into the direction of closing the tap, which allows catch up or compensate for the different functional games, preexisting or consecutive to the wear of the tap and / or its actuating element, and this by improving the safety of the device concerned, in the case of a gas fuel controlled by the tap.
  • games can exist, on the one hand between the thread and tapping of the screwing / unscrewing means of the sleeve intermediate, and secondly between the element actuation, for example trigger, and the end of needle control. In the latter case, if the trigger actuation is pinched between the free end of the return means and the needle control end, then the game between trigger and needle is automatically caught up under the effect of the reminder.
  • a chamber 5a into which opens an orifice forming seat 5b (see Figures 2 and 3), an upstream passage 5c, communicating with the source 15 of combustible gas, by via the gas intake means 20, and arriving in chamber 5a through the orifice forming seat 5b, thus that a downstream passage 5d, leaving from the chamber 5a, towards the burner 4.
  • a needle 6 is indirectly mounted on the body 5, movably in translation, in the axis of the seat 5b; it has an active end 6a, conical for example, cooperating with seat 5b.
  • Means 7, consisting of two O-rings, are arranged between the needle 6 and the chamber 5a.
  • a steering wheel 8 needle 6 rotary control is arranged coaxially with the latter, remaining accessible to the user outside structure 2, and more precisely from the handle 16 of the welding machine.
  • an organ is provided actuation 11 only in translation of the needle 6, arranged in structure 2, and more precisely at the level handle 16 of the device.
  • This actuator includes an actuating element 12, more specifically a trigger, accessible by the user, outside of structure 2 of the apparatus.
  • Item 12 is linked mechanically at the control end 6b of the needle 6, to move the latter only in translation by report to headquarters 5b.
  • a reminder 13, independent and outside the needle valve 3 itself, is mounted or integrated in structure 2, and more precisely in the handle 16, to recall the end of command 6b of needle 6, in the direction of closing the tap 3.
  • This return means 13 consists of a spring made of two "U" branches, one of which 13a is fixed against a stop 50 in structure 2, and more precisely the handle 16, and of which the other mobile 13b press the control end 6b of the needle 6 with a hook-shaped back.
  • this return means 13 exerts a thrust relatively weak, even zero, against needle 6.
  • the thrust or restoring force exerted is directed substantially in the axis of the needle 6.
  • the sheath intermediate 9 has an axial hole 9c, shaped cylindrical, while the needle 6 has a rod axial 6c cylindrical.
  • This axial hole and this axial rod are adapted to each other in cross section, to allow an adjusted relative displacement, and in translation and in rotation, from the needle 6 relative to the sleeve 9, possibly limited depending on the travel in translation 80 defined below.
  • the rod 6c of needle and the axial hole 9c of the intermediate sleeve have two sections 61 and 62, of diameters respectively different, section 61 stronger diameter being proximal to the seat 5b of the needle 6.
  • the shoulder 14 between the two cylindrical sections of the axial hole 9c of the sleeve 9 determines a full opening stop, limiting the translational stroke of needle 6 relative to sleeve 9, in the direction of opening valve 3, and in any unscrewed position of the sleeve 9, by relation to the body 5.
  • the shoulder 70 existing between the two sections cylindrical of the axial rod 6c of the needle 6 determines a stop for closing the tap 3, making it possible to push or push the needle 6 positively and directly in its closed position, under the effect or action of the screwing the intermediate sleeve 9 relative to the body 5.
  • the trigger 12 is movable in translation, parallel to the axis of the needle 6, freely relative to to structure 2, and more precisely handle 16, and is slidably mounted on the control end 6b of the needle, between this last and the movable end 13b of the return means 13 described below.
  • the sleeve 9 moves relative to needle 6, according to a race 80, by moving the stop 14 fully open, relative to the closing stop 70.
  • the conical end 6a of the needle 6 remains glued against the seat 5b of the body 5, so that there is no gas passage.
  • the end 9b of the sleeve 9 presses against the control end 6b, by through the movable end 13b of the spring 13 and of trigger 12, against the restoring force exerted by the spring 13. From this moment, the end conical 6a of the needle 6 takes off relative to the seat 5b, and by turning the steering wheel 8, it is possible to set the desired minimum flow rate.
  • needle 6 is likely to move only in translation in the sleeve 9, enters, on one side, the position corresponding to the minimum flow rate determined by the user, and on the other side, the opening stop 14 complete.
  • the trigger 12 By pressing the trigger 12, always at against the return force exerted by the spring 13 on needle 6, the sheath 9 remaining stationary, it is possible to draw the needle 6, by the support of the trigger 12 against the movable end 13b of the spring 13, integral with the control end 6b of the needle 6.
  • this trigger 12 is pressed, by therefore the conical end 6a of the needle 6 is released completely from seat 5b, letting a flow pass maximum gas to the functional unit or burner 4.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)

Claims (10)

  1. Gerät (1), welches die Abgabe oder Verbrennung eines Strömungsmittels ermöglicht und welches zumindest aus einer Konstruktion (2) besteht, die erstens ein Nadelventil (3) aufweist, welches über einen Hauptkörper (5) verfügt, in den eine Kammer (5a) eingelassen ist, in die eine Öffnung mündet und den Ventilsitz (5b) bildet, mit einer zuführenden Strömungsleitung (5c), die über die genannte Öffnung zur genannten Kammer führt, und einer weiterführnden Strömungsleitung (5d), die von der genannten Kammer wegführt, welches außerdem über eine Zwischenhülse (9) verfügt, die in Achsrichtung des genannten Ventilsitzes (5b) beweglich am besagten Hauptkörper (5) befestigt ist, sowie über Dichtungselemente (7) der Ventilnadel (6) zur Kammer (5a) und einer Stellschraube (8) des Ventils, die koaxial zur genannten Ventilnadel angeordnet ist und von außerhalb der Konstruktion (2) des genannten Gerätes zu bedienen ist, die zweitens ein Bedienteil (11) zur Längsverschiebung der Ventilnadel (6) aufweist, welches an der Konstruktion (2) des Gerätes angebracht ist und ein Bedienelement (12) umfaßt, welches von außerhalb der Konstruktion des Gerätes zu betätigen ist und welches mechanisch mit dem Steuerungsende (6b) der Ventilnadel verbunden ist, um die Ventilnadel in Längsrichtung zum Ventilsitz zu verschieben, welches außerdem ein Druckelement (13) umfaßt, um das genannte Steuerungsende (6b) in die Richtung der Ventilschließung zurückzuziehen, und die drittens ein Funktionslement (4) zur Abgabe oder Verbrennung des kontrollierten Strömungsmittels aufweist, dadurch gekennzeichnet, daß:
    die Ventilnadel (6) sowohl in Längsrichtung als auch in Drehrichtung zur Zwischenhülse frei beweglich in die Zwischenhülse eingebaut ist;
    das Druckelement (13) sich zwischen dem in der Konstruktion (2) des Gerätes enthaltenen Anschlag (50) und der Ventilnadel (6), d.h. insbesondere ihrem Steuerungsende (6b) befindet;
    die Zwischenhülse (9) und der Hauptkörper Gewinde (10) aufweisen, welche ineinandergreifen, und die Zwischenhülse einerseits dazu dient, die genannte Ventilnadel (6), d.h. speziell ihr Steuerungsende (6b), längs in Richtung der Ventilöffnung zu verschieben, indem die genannte Zwischenhülse herausgedreht wird, und andererseits die Zwischenhülse dazu dient, die genannnte Ventilnadel (6), d.h. speziell ihren Dorn (6a), in Richtung der Ventilschließung und damit in die Richtung der vom Druckelement (13) ausgeübten Kraft zu verschieben, indem die genannte Zwischenhülse hineingeschraubt wird.
  2. Gerät entsprechend Anspruch 1, dadurch gekennzeichnet, daß die Zwischenhülse (9) eine Axialbohrung (9c) aufweist und daß die Ventilnadel (6) der Regelungsvorrichtung für das Strömungsmittel einen Axialstift (6c) aufweist und Axialbohrung und Axialstift im Querschnitt aneinander angepaßt sind, um eine reibungslose Längsverschiebung der Ventilnadel in der Zwischenhülse zu ermöglichen.
  3. Gerät entsprechend Anspruch 1, dadurch gekennzeichnet, daß das Nadelventil über einen Anschlag (14) für die maximale Öffnung verfügt, der den Lauf der Ventilnadel (6) in der Zwischenhülse (9) in Richtung Ventilöffnung und in Richtung herausgedrehter Zwischenhülse beschränkt.
  4. Gerät entsprechend Anspruch 1, dadurch gekennzeichnet, daß das Nadelventil über einen Anschlag (70) für die Ventilschließung verfügt, um die Ventilnadel (6) durch Hineindrehen der Zwischenhülse (9) in die Position Ventilschließung zu schieben.
  5. Gerät entsprechend der Ansprüche 3 und 4, dadurch gekennzeichnet, daß der Anschlag (14) für die vollständige Öffnung und der Anschlag (70) für die Schließung dadurch zustande kommen, daß der Stift (6c) der Ventilnadel und die Axialbohrung (9c) der Zwischenhülse zwei Abschnitten (61,62) mit jeweils unterschiedlichem Durchmesser aufweisen, wobei der Abschnitt (61) mit dem größeren Durchmesser näher am Ventilsitz der Ventilnadel gelegen ist.
  6. Gerät entsprechend Anspruch 1, dadurch gekennzeichnet, daß das Bedienelement (12) in Längsrichtung verschiebbar ist, und zwar parallel zur Ventilnadel (6) und frei beweglich bezüglich der Konstruktion (2), und daß es am Steuerungsende (6b) der Ventilnadel befestigt ist.
  7. Gerät entsprechend Anspruch 1, dadurch gekennzeichnet, daß das Druckelement (13) des Bedienteils eine gebogene Feder ist, deren unbewegliches Ende (13a) an der Konstruktion (2) befestigt ist und deren bewegliches Ende (13b) am Steuerungsende (6b) der Ventilnadel befestigt ist.
  8. Gerät entsprechend Anspruch 1, dadurch gekennzeichnet, daß das Druckelement (13) dazu dient und/oder eingerichtet ist, eine Kraft in Richtung der Ventilnadel (6) auszuüben.
  9. Gerät entsprechend einem der Ansprüche 1 bis 8 zur Verbrennung von Gas, insbesondere ein Brenner für Löt- oder sonstige Arbeiten, bei denen verhältnismäßig hohe Temperaturen benötigt werden, dessen Funktionselement (4) ein Brenner ist und dessen hinführende Strömungsleitung mit einer Quelle für unter Druck stehendem, verbrennbarem Gas verbunden ist.
  10. Gerät entsprechend Anspruch 9, welches tragbar ist und dessen Konstruktion (2) einerseits einen Handgriff (16) aufweist und andererseits einen Kartuschenhalter (17) für eine Kartusche (15), die unter Druck stehendes, brennbares Gas enthält, ferner mit einem Element (20) für die Gasentnahme aus der genannten Kartusche, welches eventuell im Hauptkörper (5) der Regelungsvorrichtung (3) für die Gasabgabe enthalten ist.
EP19950420166 1994-06-23 1995-06-21 Durchflussregelungsventil mit Doppelsteuerung Expired - Lifetime EP0689008B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9407981A FR2721678B1 (fr) 1994-06-23 1994-06-23 Dispositif de contrôle de débit d'un fluide, du type robinet à pointeau, intégré notamment dans un appareil permettant de dispenser ou consommer ledit fluide.
FR9407981 1994-06-23

Publications (2)

Publication Number Publication Date
EP0689008A1 EP0689008A1 (de) 1995-12-27
EP0689008B1 true EP0689008B1 (de) 1998-03-04

Family

ID=9464766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950420166 Expired - Lifetime EP0689008B1 (de) 1994-06-23 1995-06-21 Durchflussregelungsventil mit Doppelsteuerung

Country Status (3)

Country Link
EP (1) EP0689008B1 (de)
DE (1) DE69501688T2 (de)
FR (1) FR2721678B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100436942C (zh) * 2006-12-30 2008-11-26 王立胜 手持式喷火枪

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1172860A (fr) * 1956-11-05 1959-02-17 Otto Bernz Company Lampe à souder
DE1960578U (de) * 1966-12-20 1967-05-18 Loetkolben Und Loetapp Fabrik Druck- und flammenregeleinrichtung fuer fluessiggas-loetgeraete.
FR2535817A1 (fr) * 1982-11-08 1984-05-11 Guilbert & Fils Leon Robinet, notamment pour chalumeau

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100436942C (zh) * 2006-12-30 2008-11-26 王立胜 手持式喷火枪

Also Published As

Publication number Publication date
DE69501688T2 (de) 1998-06-25
FR2721678A1 (fr) 1995-12-29
EP0689008A1 (de) 1995-12-27
DE69501688D1 (de) 1998-04-09
FR2721678B1 (fr) 1996-08-14

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