EP1058059B1 - Robinet à gaz - Google Patents

Robinet à gaz Download PDF

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Publication number
EP1058059B1
EP1058059B1 EP20000830151 EP00830151A EP1058059B1 EP 1058059 B1 EP1058059 B1 EP 1058059B1 EP 20000830151 EP20000830151 EP 20000830151 EP 00830151 A EP00830151 A EP 00830151A EP 1058059 B1 EP1058059 B1 EP 1058059B1
Authority
EP
European Patent Office
Prior art keywords
shutter
gas
tap
transmission element
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20000830151
Other languages
German (de)
English (en)
Other versions
EP1058059A3 (fr
EP1058059A2 (fr
Inventor
Sebastiano Saleri
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.)
Siral SpA
Original Assignee
Siral SpA
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Filing date
Publication date
Application filed by Siral SpA filed Critical Siral SpA
Publication of EP1058059A2 publication Critical patent/EP1058059A2/fr
Publication of EP1058059A3 publication Critical patent/EP1058059A3/fr
Application granted granted Critical
Publication of EP1058059B1 publication Critical patent/EP1058059B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F23N5/107—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using mechanical means, e.g. safety valves

Definitions

  • This invention concerns taps for gas burners, particularly those taps of the globe valve variety.
  • the gas taps usually include a command stem which can move axially to open and close the tap and rotate to open and vary the gas output.
  • the globe valves also include a safety valve which can intervene and block automatically the supply of gas to the burner, should the flame go out while the tap is open.
  • the safety valve is of the magnetic type and consists of a shutter that can move from an open to a closed position in the passage carrying the gas to the burner when the tap is open.
  • Said safety valve in reality, also includes an electromagnet in line with the shutter and energised by the thermocurrent of a thermocouple, according to the flame of the burner.
  • the tap stem pushes the safety shutter into an open position. Then the stem retracts and, to keep the flame alight, the electromagnet is energised and holds the safety shutter open.
  • the electromagnet is deactivated following the accidental extinction of the flame, said shutter is released and moves into the position which closes the passage of the gas to the burner, assisted by a compressed spring.
  • the safety valve is placed at 90° to the axis of the tap stem itself, which means using mechanical transmission between the stem and the safety shutter of the valve to control the interaction between the two elements at the moment of opening the tap.
  • such mechanical means of transmission include levers and thrusters which are rather complicated and awkward to mount on the tap body.
  • This body therefore, becomes a complex structure which is difficult to work with machine tools at the moment of its assembly.
  • document GB 2 261 495 A discloses a gas flow control valve assembly comprising a push rod for the command of the valve and a closure member coupled to an electromagnet energised by a signal from a thermocouple. Between the push rod and the closure member there is provided a rotating shaft having radial projections at each end, one of which cooperating with the lower end of the push rod and the other with the closure member.
  • the valve assembly is necessarily made in two parts, a body and a cap.
  • a globe valve for gas which includes, as transmission means between the command stem and the shutter of the safety valve, elements that are particularly simple and linear in structure, execution and positioning and which also simplify the structure and the working which needs to be done on the tap body, making it easier to get to the seats in which said elements are mounted.
  • the gas tap consists of a body 11 with conduits 12 for the gas flowing from an entrance 13 via an exit 14 towards the burner, a tap shutter 15 to open and close said conduits in a zone mid-way between the entrance and the exit, and a stem 16 movable axially and in rotation in order to open and close the shutter and regulate the gas flow towards the burner.
  • the tap also includes a safety valve 17 placed in an appropriate seat 18, closed by a cap 18', situated on an axis at right angles to the command stem 16.
  • the safety valve essentially consists of a fixed electromagnet 19 and a safety shutter 20, the latter capable of moving towards and away from a hole or seat for the valve 21, placed along the gas conduit inside the tap body.
  • the electromagnet 19 can be connected to a thermocouple - not shown - which is located next to the burner; the safety shutter 20 is held in the open position of the valve seat 21 of the electromagnet when the latter is energised, and moves and remains in the closed position of the valve seat, aided by a spring - not shown - when the electromagnet is not activated.
  • the safety shutter 20 when the tap is opened by the stem in order to light the burner flame, the safety shutter 20 must be opened by moving it towards the electromagnet.
  • two substantially linear transmission elements are mounted in the tap body 11: a first element 22 in line with the safety shutter 20 and passing, at least partially, through the valve seat - Fig. 4; a second element 23, placed perpendicularly to the first element and extending from this towards the axis of the command stem 16, perpendicular to this, too, but placed to the side of it Fig. 6.
  • the first element is guided and capable of axial transfer towards and away from the safety valve 20.
  • the second element 23 is supported on end pins 24 and capable of rotating around its own axis, without transfer.
  • Both transmission elements 22, 23 have grooves or longitudinal passages 22a, 23a, respectively, for carrying the gas from the entrance to the exit leading to the burner.
  • the second element 23, in its first part adjacent to the axis of the command stem, has at least one radial tooth 23' which fits into a complementary hollow or groove 25', foreseen around pull rod 25 connected to the command stem 16, of which it represents a prolongation and passing axially into the tap shutter 15 - Fig. 5. Furthermore, said second element 23, in the second part which is adjacent to the first element 22, has at least one other radial tooth 23" which fits into a complementary hollow or groove 22' made in said first element 22 - Fig. 4. In this way, the axial movement of the command stem 16 corresponds, via the pull rod 25, to a rotation of the second transmission element 23 and, via this, to an axial transfer of the first transmission element 22.
  • a subsequent forward axial movement by the stem causes, via the pull rod 25, a rotation of the second transmission element 23 which causes in turn an axial movement of the first element 22 towards the safety shutter 20 and thereby moving this in the direction away from the respective valve seat 21.
  • the shutter can be rotated so as to allow the gas to flow to the burner and the flame to be lit; in the presence of the heat from the flame, the thermocouple excites the electromagnet and the latter holds the safety valve in the open position, even when the safety stem retracts after the push forwards and is rotated in order to regulate the gas outflow. This is the situation while the burner is alight. If for some reason the burner goes out while the tap is still open, the electromagnet is deactivated and the safety shutter 20 closes over the hole or seat of the valve, automatically interrupting the gas supply.

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)
  • Taps Or Cocks (AREA)
  • Lift Valve (AREA)
  • Physical Vapour Deposition (AREA)

Claims (4)

  1. Robinet à soupape pour le gaz consistant en un corps (11) doté de conduits (12) pour le gaz circulant de l'entrée d'admission (13) jusqu'à la sortie (14) en direction d'un brûleur, un robinet obturateur (15) pour ouvrir et fermer les conduits dans une zone située à mi-chemin entre l'entrée d'admission et la sortie, une tige de commande (16) qui se déplace axialement et pivote pour commander l'ouverture et la fermeture de l'obturateur et réguler la circulation du gaz en direction du brûleur, une soupape de sûreté (17) perpendiculaire à l'axe de cette tige de commande, conçue pour intervenir automatiquement et stopper l'alimentation en gaz en direction du brûleur si la flamme venait à s'éteindre alors que le robinet est ouvert ; robinet dans lequel cette soupape de sûreté comprend un électro-aimant fixe (19) alimenté en courant électrique par un thermocouple en présence de la flamme du brûleur et un obturateur de sécurité (20) associé à l'orifice ou logement d'une valve (21) régulant l'admission et la sortie du gaz du brûleur, et dans lequel l'obturateur de sécurité est en position fermée au-dessus de l'orifice ou logement de la valve lorsque la flamme du brûleur est éteinte et dans une position qui ouvre cet orifice ou logement de la valve, retenue par l'électro-aimant, en présence de la flamme du brûleur, ainsi que des éléments de transmission linéaire (22, 23) situés à l'intérieur du corps du robinet entre le robinet obturateur et l'obturateur de sécurité, de façon à mettre l'obturateur de sécurité en position ouverte pour répondre à l'ouverture du robinet obturateur par l'entremise de la tige de commande ; robinet caractérisé par le fait que ces éléments de transmission linéaire comprennent un premier élément de transmission (22), placé dans l'axe de l'obturateur de sécurité (20) et se rapprochant ou s'éloignant axialement de ce dernier, et un second élément de transmission (23) situé sur un plan perpendiculaire par rapport au premier élément de transmission (22) et à l'axe de la tige de commande - mais seulement sur un côté de cette dernière -, et capable de pivoter sur son axe, de manière que le mouvement axial de la tige de commande (16) corresponde à la rotation du second élément de transmission (23) et, de ce fait, à une translation axiale du premier élément de transmission (22).
  2. Robinet à soupape pour le gaz selon la revendication 1, comprenant en outre une tringle (25) qui est associée à la tige de commande et peut se déplacer axialement avec celle-ci, en passant à travers le robinet obturateur et en allant jusqu'au niveau du second élément de transmission pivotant, ce second élément de transmission ayant au moins une dent (23') qui s'insère dans une cavité ou gorge correspondante (25') située autour de la tringle, et au moins une autre dent (23'') couplée à une cavité ou gorge (22') située autour du premier élément de transmission, de manière que le mouvement axial de la tige de commande vers l'avant corresponde à une rotation du second élément de transmission (23) et à un mouvement transversal du premier élément de transmission, afin de faire passer l'obturateur de sécurité de la position fermée à la position ouverte du côté de l'électro-aimant, lorsque le robinet est ouvert, et le faire revenir en position fermée lorsque la tige de commande s'est retirée.
  3. Robinet à soupape pour le gaz selon la revendication 2, dans lequel les éléments de transmission (22, 23) sont pourvus de cannelures dans le sens de la longueur pour permettre le passage du gaz.
  4. Robinet à soupape pour le gaz selon la revendication 2, dans lequel le premier élément de transmission (22) est axialement guidé et où le second élément prend appui, en pivotant, sur le corps du robinet.
EP20000830151 1999-06-02 2000-02-29 Robinet à gaz Expired - Lifetime EP1058059B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999BS000047 IT247344Y1 (it) 1999-06-02 1999-06-02 Rubinetto per gas valvolato.
ITBS990047U 1999-06-02

Publications (3)

Publication Number Publication Date
EP1058059A2 EP1058059A2 (fr) 2000-12-06
EP1058059A3 EP1058059A3 (fr) 2002-02-13
EP1058059B1 true EP1058059B1 (fr) 2005-04-27

Family

ID=11346355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000830151 Expired - Lifetime EP1058059B1 (fr) 1999-06-02 2000-02-29 Robinet à gaz

Country Status (3)

Country Link
EP (1) EP1058059B1 (fr)
ES (1) ES2240044T3 (fr)
IT (1) IT247344Y1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103547865A (zh) * 2010-12-14 2014-01-29 Bsh博世和西门子家用电器有限公司 具有行程偏转系统的燃气阀单元

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2823548B1 (fr) * 2001-04-13 2005-11-18 Sourdillon Sa Robinet de securite, notamment pour le gaz d'une plaque de cuisson et procede de montage associe
TR200504224A1 (tr) * 2005-10-21 2007-10-22 Turaş Gaz Armatürleri̇ San. Ve Ti̇c. A. Ş. Gaz ocakları için Y tipli sönme emniyetli musluk.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT220286Z2 (it) * 1990-11-19 1993-09-15 Imit Rubinetto-gas con sicurezza modulare specie per piani di cottura di altezza limitata.
ES1019084Y (es) * 1991-11-13 1992-10-01 Fagor, S.Coop.Ltda. Valvula de control con grupo magnetico de seguridad para cocinas a gas.
FR2712963B1 (fr) * 1993-11-24 1996-02-02 Sourdillon Sa Robinet de gaz avec soupape de sécurité, notamment pour appareil ménager de type plat.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103547865A (zh) * 2010-12-14 2014-01-29 Bsh博世和西门子家用电器有限公司 具有行程偏转系统的燃气阀单元
CN103547865B (zh) * 2010-12-14 2016-01-20 Bsh家用电器有限公司 具有行程偏转系统的燃气阀单元

Also Published As

Publication number Publication date
IT247344Y1 (it) 2002-07-09
ES2240044T3 (es) 2005-10-16
ITBS990047V0 (it) 1999-06-02
ITBS990047U1 (it) 2000-12-02
EP1058059A3 (fr) 2002-02-13
EP1058059A2 (fr) 2000-12-06

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