EP0436439B1 - Back draught security gas valve for pilotless hot water heater - Google Patents

Back draught security gas valve for pilotless hot water heater Download PDF

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Publication number
EP0436439B1
EP0436439B1 EP90403780A EP90403780A EP0436439B1 EP 0436439 B1 EP0436439 B1 EP 0436439B1 EP 90403780 A EP90403780 A EP 90403780A EP 90403780 A EP90403780 A EP 90403780A EP 0436439 B1 EP0436439 B1 EP 0436439B1
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EP
European Patent Office
Prior art keywords
cam
valve
diaphragm
button
hot water
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
EP90403780A
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German (de)
French (fr)
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EP0436439A1 (en
Inventor
Franck Guillaume
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.)
Saunier Duval Eau Chaude Chauffage SDECC SA
Original Assignee
Saunier Duval Eau Chaude Chauffage SDECC SA
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Application filed by Saunier Duval Eau Chaude Chauffage SDECC SA filed Critical Saunier Duval Eau Chaude Chauffage SDECC SA
Publication of EP0436439A1 publication Critical patent/EP0436439A1/en
Application granted granted Critical
Publication of EP0436439B1 publication Critical patent/EP0436439B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
    • F24H9/2042—Preventing or detecting the return of combustion gases
    • F24H9/205—Closing the energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/247—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using mechanical means

Definitions

  • the invention relates to an overflow safety gas inlet valve for stopping a device for producing hot water such as a water heater or a gas bath heater, in the case for example , draft anomaly in the flue gas evacuation pipe and applies particularly to devices without pilot.
  • a safety device must be able to react to any anomaly, due for example to a bad draft, a backflow, an obstruction of the duct or a extractor failure, anomaly which causes the combustion products to be pushed back into the room.
  • thermoelectric safety system In water heaters and bath heaters operating without a pilot light, and which therefore do not use a thermoelectric safety system, it was necessary to use safety mechanisms acting positively on the gas inlet valve to the device, and reacting for example to the action of a thermally sensitive element judiciously placed to take account of a rise in temperature in a flue gas evacuation pipe.
  • FR-A 2 606 854 in the name of the applicant, which consists in associating a rotary cocking button and a metastable mechanism of the kind with a blistering membrane linked to a sensitive bulb.
  • a rise in temperature of the products of combustion which gas inlet valve comprising a cam mounted rotatably around of its axis under the action of the button and which cooperates with the control rod of the gas inlet valve, said cam being remarkable in that it is also movable in translation on said axis under the action of the mechanism with blistering membrane to escape from the valve control rod and secure the device.
  • An object of the present invention therefore consists of an overflow safety gas inlet valve for hot water production device without pilot light, allowing the gas inlet valve to be closed in the event of an anomaly in the evacuation of its combustion products, comprising a rotary cocking button operating a cam acting on the valve stem and a metastable mechanism of the blistering membrane type linked to a bulb reacting to a rise in temperature of said combustion products, to cause the closure of the valve , said rotary cam also being displaceable in translation by the blistering membrane, so that it escapes from the valve control rod and puts the device in safety, valve according to which a blistering membrane is mounted at the end of the control box, in the extension of the cam, on the side opposite to the rotary cam drive button and centered on its axis of rotation, the diaphragm cooperating with ec the cam by means of an adjustable spacing pin.
  • the pawn is equipped with a crown which projects beyond a light provided in the housing and which ensures contact between the pin and the membrane.
  • the pin is provided with an external threaded part which cooperates with a corresponding tapped part provided axially and inside the cam, on the side of the latter facing the blistering membrane.
  • a body 1 of a gas inlet valve which contains a valve 2 connecting a gas inlet pipe 3 and a starting pipe 4 to the appliance.
  • a plug 5 for closing the tap body 1 is crossed in leaktight fashion by the operating rod 6 of the valve 2 normally returned to its seat by the spring 7.
  • the control box 8 for opening the valve is provided with a vertical tubular part 9 forming a chimney, which contains an axis 10 bearing against the operating rod 6.
  • This axis opens out inside the housing 8 and is supported on a cam 11.
  • the latter can rotate around its axis AA ′ under the action of a rotary button 12 with two positions which drives an operating needle 13 engaged in a recess with flat edges 14 provided in the cam 11.
  • a ball retaining device 15, integrated in the button 12 serves to maintain the latter in one or other of its two positions thanks to the housings 16 provided in the case.
  • the cam 11 with two adjacent cylindrical off-center sections has a cylindrical part 17 of smaller diameter close to a part 18 of larger diameter, both centered on the axis AA '.
  • a spring 19 is interposed between the cam and the control unit 8 and tends to move the cam away from the button 12 and hold it against a stop 20.
  • the other end of the cam receives a pin 21 whose head 22 is in abutment against a blistering membrane 23.
  • the latter forms a small waterproof case 24 connected by a conduit 25 to a bulb not shown, placed in the appropriate position, for example in a flue gas evacuation duct.
  • the box 24 is mounted at the end of the control box 8, that is to say that the blistering membrane and its pin 21 are in the extension of the cam 11 on the side opposite to the rotary button 12 for driving said cam, and centered on its axis of rotation AA '.
  • the head 22 is in abutment against the concave face at rest, of the membrane 23, the cam 11 itself being applied to its stop 20 under the action of the spring 19. It is therefore possible to operate the button 12 so that the larger diameter portion 18 of the cam 11 pushes back the axis 10 to open the valve 2.
  • the device is armed, the button 12 remaining in this position thanks to the locking of the retaining device 15.
  • the device is positively safe because in the event of a bulb leakage or failure, the blistering membrane immediately takes on the convex shape for which there is action on the cam and securing the device.
  • the depth of the support pin of the blistering membrane can be adjusted manually relative to the cam.
  • the pin 21 is adjustable and advantageously equipped with a crown 26 which projects beyond a light 27 provided in the case 8 and which allows the position of the pin to be adjusted.
  • the latter is provided with an external threaded portion 28 which cooperates with a corresponding threaded portion provided axially and inside the cam on the side facing the blistering membrane 23.
  • the rotation of the crown 26 therefore makes it possible to ensure the contact of the pin with the membrane 23.
  • the crown is operated only once to ensure this contact.
  • the pin-cam assembly is then glued at the factory.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Description

L'invention concerne un robinet d'admission gaz à sécurité de débordement permettant l'arrêt d'un appareil de production d'eau chaude du genre d'un chauffe-eau ou d'un chauffe-bains à gaz, en cas par exemple, d'anomalie de tirage dans le conduit d'évacuation des gaz brûlés et s'applique particulièrement aux appareils sans veilleuse.The invention relates to an overflow safety gas inlet valve for stopping a device for producing hot water such as a water heater or a gas bath heater, in the case for example , draft anomaly in the flue gas evacuation pipe and applies particularly to devices without pilot.

On sait que lorsqu'un appareil à gaz d'une certaine puissance est raccordé à un conduit de fumée, on considère que son fonctionnement a lieu dans des conditions normales lorsque la totalité des produits de combustion est évacuée dans ce conduit. Dans certains cas, le tirage naturel étant insuffisant, un extracteur est disposé dans le conduit ou dans une gaine collectrice des gaz brûlés de plusieurs appareils ; l'installation est dite alors à ventilation mécanique contrôlée (V.M.C.).It is known that when a gas appliance of a certain power is connected to a flue, it is considered that its operation takes place under normal conditions when all of the combustion products are evacuated in this flue. In certain cases, the natural draft being insufficient, an extractor is placed in the duct or in a collecting duct for the burnt gases of several appliances; the installation is then said to have controlled mechanical ventilation (V.M.C.).

De toute façon, quelle que soit la solution adoptée, tirage naturel ou VMC., il faut qu'un dispositif de sécurité puisse réagir à toute anomalie, due par exemple à un mauvais tirage, à un refoulement, à une obstruction du conduit ou une panne d'extracteur, anomalie qui provoque le refoulement des produits de combustion dans le local.In any case, whatever the solution adopted, natural draft or VMC., A safety device must be able to react to any anomaly, due for example to a bad draft, a backflow, an obstruction of the duct or a extractor failure, anomaly which causes the combustion products to be pushed back into the room.

Dans les chauffe-eau et les chauffe-bains à fonctionnement sans veilleuse, et qui par conséquent n'utilisent pas de système de sécurité thermoélectrique, il a fallu utiliser des mécanismes de sécurité agissant de façon positive sur le robinet d'admission du gaz à l'appareil, et réagissant par exemple à l'action d'un élément thermosensible judicieusement placé pour tenir compte d'une élévation de température dans un conduit d'évacuation des gaz brûlés.In water heaters and bath heaters operating without a pilot light, and which therefore do not use a thermoelectric safety system, it was necessary to use safety mechanisms acting positively on the gas inlet valve to the device, and reacting for example to the action of a thermally sensitive element judiciously placed to take account of a rise in temperature in a flue gas evacuation pipe.

Parmi les réalisations connues, il en est une, telle que décrite dans le FR-A 2 606 854 au nom de la demanderesse qui consiste à associer un bouton rotatif d'armement et un mécanisme métastable du genre à membrane cloquante lié à un bulbe sensible à une élévation de température des produits de combustion, lequel robinet d'admission gaz comportant une came montée rotative autour de son axe sous l'action du bouton et qui coopère avec la tige de commande du clapet d'admission gaz, ladite came étant remarquable en ce qu'elle est également déplaçable en translation sur ledit axe sous l'action du mécanisme à membrane cloquante pour la faire échapper de la tige de commande du clapet et mettre l'appareil en sécurité.Among the known embodiments, there is one, as described in FR-A 2 606 854 in the name of the applicant, which consists in associating a rotary cocking button and a metastable mechanism of the kind with a blistering membrane linked to a sensitive bulb. a rise in temperature of the products of combustion, which gas inlet valve comprising a cam mounted rotatably around of its axis under the action of the button and which cooperates with the control rod of the gas inlet valve, said cam being remarkable in that it is also movable in translation on said axis under the action of the mechanism with blistering membrane to escape from the valve control rod and secure the device.

Le déplacement en translation de la came est assuré par un levier pivotant dont une extrémité est sollicitée par la membrane cloquante et dont l'autre extrémité vient en appui contre une vis de réglage du positionnement de la came. Il s'avère que le montage de ce levier et le réglage de sa course à la fois vis à vis de la membrane cloquante et de la vis de réglage, sont malaisés et sujet à des déréglages fréquents ce qui a conduit la Demanderesse à imaginer une solution plus pratique, qui évite ces inconvénients et va dans le sens d'une simplification de réalisation du robinet.The displacement in translation of the cam is ensured by a pivoting lever, one end of which is urged by the blistering membrane and the other end of which bears against a screw for adjusting the positioning of the cam. It turns out that the mounting of this lever and the adjustment of its travel both with respect to the blistering diaphragm and the adjustment screw are difficult and subject to frequent adjustments which has led the Applicant to imagine a a more practical solution which avoids these drawbacks and goes in the direction of simplifying the production of the tap.

Un objet de la présente invention consiste donc en un robinet d'admission gaz à sécurité de débordement pour appareil de production d'eau chaude sans veilleuse, permettant la fermeture du clapet d'admission gaz en cas d'anomalie dans l'évacuation de ses produits de combustion, comportant un bouton rotatif d'armement manoeuvrant une came agissant sur la tige du clapet et un mécanisme métastable du genre à membrane cloquante lié à un bulbe réagissant à une élévation de température desdits produits de combustion, pour provoquer la fermeture du clapet, ladite came rotative étant également déplaçable en translation par la membrane cloquante, pour qu'elle échappe de la tige de commande du clapet et mette l'appareil en sécurité, robinet selon lequel une membrane cloquante est montée en bout du boitier de commande, dans le prolongement de la came, du côté opposé au bouton rotatif d'entrainement de la came et centrée sur son axe de rotation, la membrane coopérant avec la came par l'intermédiaire d'un pion d'écartement réglable.An object of the present invention therefore consists of an overflow safety gas inlet valve for hot water production device without pilot light, allowing the gas inlet valve to be closed in the event of an anomaly in the evacuation of its combustion products, comprising a rotary cocking button operating a cam acting on the valve stem and a metastable mechanism of the blistering membrane type linked to a bulb reacting to a rise in temperature of said combustion products, to cause the closure of the valve , said rotary cam also being displaceable in translation by the blistering membrane, so that it escapes from the valve control rod and puts the device in safety, valve according to which a blistering membrane is mounted at the end of the control box, in the extension of the cam, on the side opposite to the rotary cam drive button and centered on its axis of rotation, the diaphragm cooperating with ec the cam by means of an adjustable spacing pin.

Selon une caractéristique particulière de l'invention, le pion est équipé d'une couronne qui déborde d'une lumière prévue dans le boitier et qui permet d'assurer le contact entre le pion et la membrane. A cet effet, le pion est muni d'une partie filetée externe qui coopère avec une partie taraudée correspondante prévue axialement et à l'intérieur de la came, du côté de celle-ci faisant face à la membrane cloquante.According to a particular characteristic of the invention, the pawn is equipped with a crown which projects beyond a light provided in the housing and which ensures contact between the pin and the membrane. To this end, the pin is provided with an external threaded part which cooperates with a corresponding tapped part provided axially and inside the cam, on the side of the latter facing the blistering membrane.

Les caractéristiques particulières et avantages de l'invention apparaîtront à la lecture de la description qui va suivre d'une forme de réalisation faisant référence au dessin unique annexé qui représente une vue en coupe du robinet d'admission gaz d'un appareil de production d'eau chaude.The particular characteristics and advantages of the invention will appear on reading the following description of an embodiment referring to the single appended drawing which represents a sectional view of the gas inlet valve of a production apparatus for 'Hot water.

On a représenté schématiquement, à la partie supérieure de la figure, un corps 1 de robinet d'admission gaz qui renferme un clapet 2 mettant en communication un conduit d'arrivée de gaz 3 et un conduit de départ 4 vers l'appareil. Un bouchon 5 d'obturation du corps de robinet 1 est traversé de façon étanche par la tige de manoeuvre 6 du clapet 2 normalement rappelé sur son siège par le ressort 7. Le boitier de commande 8 d'ouverture du clapet est pourvu d'une partie tubulaire verticale 9 formant cheminée, qui renferme un axe 10 en appui contre la tige de manoeuvre 6. Cet axe débouche à l'intérieur du boitier 8 et prend appui sur une came 11. Celle-ci peut tourner autour de son axe AA' sous l'action d'un bouton rotatif 12 à deux positions qui entraine une aiguille de manoeuvre 13 engagée dans un évidement à bords plats 14 prévu dans la came 11. Un dispositif 15 de retenue à bille, intégré dans le bouton 12 sert à maintenir ce dernier dans l'une ou l'autre de ses deux positions grâce aux logements 16 prévus dans le boitier.There is shown schematically, in the upper part of the figure, a body 1 of a gas inlet valve which contains a valve 2 connecting a gas inlet pipe 3 and a starting pipe 4 to the appliance. A plug 5 for closing the tap body 1 is crossed in leaktight fashion by the operating rod 6 of the valve 2 normally returned to its seat by the spring 7. The control box 8 for opening the valve is provided with a vertical tubular part 9 forming a chimney, which contains an axis 10 bearing against the operating rod 6. This axis opens out inside the housing 8 and is supported on a cam 11. The latter can rotate around its axis AA ′ under the action of a rotary button 12 with two positions which drives an operating needle 13 engaged in a recess with flat edges 14 provided in the cam 11. A ball retaining device 15, integrated in the button 12 serves to maintain the latter in one or other of its two positions thanks to the housings 16 provided in the case.

La came 11 à deux sections voisines cylindriques décentrées présente une partie cylindrique 17 de plus petit diamètre voisine d'une partie 18 de plus grand diamètre, toutes deux centrées sur l'axe AA'. Un ressort 19 est intercalé entre la came et le boitier de commande 8 et tend à écarter la came du bouton 12 et la maintenir contre une butée 20. On voit sur la figure que l'autre extrémité de la came reçoit un pion 21 dont la tête 22 est en appui contre une membrane cloquante 23. Cette dernière forme une petit boitier étanche 24 relié par un conduit 25 à un bulbe non représenté, placé en position appropriée, par exemple dans une gaine d'évacuation des gaz brûlés. Le boitier 24 est monté en bout du boitier de commande 8 c'est à dire que la membrane cloquante et son pion 21 sont dans le prolongement de la came 11 du côté opposé au bouton rotatif 12 d'entraînement de ladite came, et centrés sur son axe de rotation AA'. Dans la position représentée, la tête 22 est en appui contre la face concave au repos, de la membrane 23, la came 11 étant elle-même appliquée sur sa butée 20 sous l'action du ressort 19. On peut donc manoeuvrer le bouton 12 pour que la partie de plus grand diamètre 18 de la came 11 repousse l'axe 10 pour ouvrir le clapet 2. L'appareil est armé, le bouton 12 restant dans cette position grâce à l'encliquetage du dispositif de retenue 15.The cam 11 with two adjacent cylindrical off-center sections has a cylindrical part 17 of smaller diameter close to a part 18 of larger diameter, both centered on the axis AA '. A spring 19 is interposed between the cam and the control unit 8 and tends to move the cam away from the button 12 and hold it against a stop 20. We see in the figure that the other end of the cam receives a pin 21 whose head 22 is in abutment against a blistering membrane 23. The latter forms a small waterproof case 24 connected by a conduit 25 to a bulb not shown, placed in the appropriate position, for example in a flue gas evacuation duct. The box 24 is mounted at the end of the control box 8, that is to say that the blistering membrane and its pin 21 are in the extension of the cam 11 on the side opposite to the rotary button 12 for driving said cam, and centered on its axis of rotation AA '. In the position shown, the head 22 is in abutment against the concave face at rest, of the membrane 23, the cam 11 itself being applied to its stop 20 under the action of the spring 19. It is therefore possible to operate the button 12 so that the larger diameter portion 18 of the cam 11 pushes back the axis 10 to open the valve 2. The device is armed, the button 12 remaining in this position thanks to the locking of the retaining device 15.

S'il y a une anomalie au niveau de l'évacuation des produits de combustion de l'appareil, caractérisée par l'échauffement du bulbe, l'élévation de température transmise par le conduit 25 va faire passer brutalement la membrane 23 dans la position convexe représentée en pointillés. Le pion 21 repousse alors la camme 11 qui se déplace en translation (vers la gauche sur la figure) à l'encontre de la force du ressort 19, taré en conséquence. Du fait de ce déplacement l'axe 10 préalablement en appui sur la partie de came de plus grand diamètre va échapper à cette partie et retomber sur la partie 17 de plus petit diamètre. L'appareil s'est donc mis en sécurité par fermeture automatique du clapet 2. Tant que le bulbe est chaud et que la membrane cloquante 23 reste dans cette position, le réarmement de l'appareil est impossible. Il faut attendre que la membrane ait repris sa position originale après refroidissement du bulbe, et que la came soit revenue en position contre sa butée 20 sous l'action du ressort 19, pour que la partie 18 puisse à nouveau attaquer l'axe 10 et réarmer l'appareil.If there is an anomaly in the evacuation of the combustion products from the appliance, characterized by the heating of the bulb, the rise in temperature transmitted by the conduit 25 will suddenly cause the membrane 23 to pass into the position convex shown in dotted lines. The pin 21 then pushes back the cam 11 which moves in translation (to the left in the figure) against the force of the spring 19, calibrated accordingly. Because of this movement, the axis 10 previously bearing on the cam portion of larger diameter will escape this portion and fall back on the portion 17 of smaller diameter. The device is therefore put into safety by automatic closing of the valve 2. As long as the bulb is hot and the blistering membrane 23 remains in this position, the device can not be reset. It is necessary to wait until the membrane has returned to its original position after cooling of the bulb, and until the cam has returned to its position against its stop 20 under the action of the spring 19, so that the part 18 can again attack axis 10 and reset the device.

Le dispositif est à sécurité positive car en cas de fuite ou de défaillance du bulbe, la membrane cloquante prend aussitôt la forme convexe pour laquelle il y a action sur la came et mise en sécurité de l'appareil.The device is positively safe because in the event of a bulb leakage or failure, the blistering membrane immediately takes on the convex shape for which there is action on the cam and securing the device.

Grâce à cette disposition d'accessibilité facile, on peut aisément régler mannuellement la profondeur du pion d'appui de la membrane cloquante, par rapport à la came. A cet effet le pion 21 est réglable et avantageusement équipé d'une couronne 26 qui déborde d'une lumière 27 prévue dans le boitier 8 et qui permet le réglage de la position du pion. Ce dernier est muni d'une partie filetée externe 28 qui coopère avec une partie taraudée correspondante prévue axialement et à l'intérieur de la came du coté faisant face à la membrane cloquante 23. La rotation de la couronne 26 permet donc d'assurer le contact du pion avec la membrane 23. La couronne est manoeuvré une seule fois afin d'assurer ce contact. L'ensemble pion-came est ensuite collé en usine.Thanks to this easily accessible arrangement, the depth of the support pin of the blistering membrane can be adjusted manually relative to the cam. For this purpose the pin 21 is adjustable and advantageously equipped with a crown 26 which projects beyond a light 27 provided in the case 8 and which allows the position of the pin to be adjusted. The latter is provided with an external threaded portion 28 which cooperates with a corresponding threaded portion provided axially and inside the cam on the side facing the blistering membrane 23. The rotation of the crown 26 therefore makes it possible to ensure the contact of the pin with the membrane 23. The crown is operated only once to ensure this contact. The pin-cam assembly is then glued at the factory.

Claims (4)

  1. Gas inlet tap with overflow safeguard for hot water production appliance without a pilot flame, allowing the closure of the gas inlet valve (2) in the case of an anomaly in the exhausting of its combustion products, comprising a rotating arming button (12) manoeuvring a cam (11) acting on the rod (6) of the valve (2), and a metastable mechanism of the blister diaphragm type (23) connected to a bulb which reacts to a temperature increase in the said combustion products in order to cause the closure of the valve (2), the said rotating cam (11) also being movable in translation by the blister diaphragm (23) so that it is released from the control rod (6) of the valve (2) and makes the appliance safe, characterised in that the blister diaphragm (23) is mounted at the end of the control box (8), in the extension of the cam (11), on the opposite side to the rotating button (12) for driving the cam (11) and centred on its axis of rotation AA', and in that the diaphragm (23) interacts with the cam (11) via an adjustable spacer block (21).
  2. Tap according to Claim 1, characterised in that a spring (19), interposed between the control box (8) and the cam (11) tends to keep the latter away from the button (12) and to hold it against a stop (20).
  3. Tap according to Claim 1, characterised in that the block (21) is fitted with a ring (26) which extends beyond a hole (27) provided in the box (8), and which allows its contact with the diaphragm.
  4. Tap according to Claim 3, characterised in that the block (21) is provided with an external threaded part (28) which interacts with a corresponding tapped part provided axially and inside the cam (11), on the side of the latter which faces the blister diaphragm (23).
EP90403780A 1990-01-04 1990-12-27 Back draught security gas valve for pilotless hot water heater Expired - Lifetime EP0436439B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9000045 1990-01-04
FR9000045A FR2656670B1 (en) 1990-01-04 1990-01-04 GAS INLET VALVE WITH OVERFLOW SAFETY FOR APPARATUS FOR PRODUCING HOT WATER WITHOUT PILOT LIGHT.

Publications (2)

Publication Number Publication Date
EP0436439A1 EP0436439A1 (en) 1991-07-10
EP0436439B1 true EP0436439B1 (en) 1993-07-21

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Application Number Title Priority Date Filing Date
EP90403780A Expired - Lifetime EP0436439B1 (en) 1990-01-04 1990-12-27 Back draught security gas valve for pilotless hot water heater

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EP (1) EP0436439B1 (en)
DE (1) DE69002317T2 (en)
ES (1) ES2042252T3 (en)
FR (1) FR2656670B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9522087D0 (en) * 1995-10-28 1996-01-03 Euro Plumbing Supplies Ltd Cut-off valve
CN112128431B (en) * 2019-06-25 2021-08-20 宁波方太厨具有限公司 One-way valve and gas water heater using same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3080118A (en) * 1960-09-06 1963-03-05 Rheem Mfg Co Water heater and method of heating water
FR2606854B1 (en) * 1986-11-17 1989-03-03 Sdecc INTEGRATED SAFETY GAS INLET VALVE FOR HOT WATER PRODUCTION DEVICE WITHOUT PERMANENT PILOT LIGHT
FR2631426B1 (en) * 1988-05-11 1990-08-24 Sdecc INDIVIDUAL AND COLLECTIVE SAFETY DEVICE FOR GAS BATH HEATERS WITHOUT PILOT LIGHT

Also Published As

Publication number Publication date
FR2656670B1 (en) 1992-04-24
DE69002317D1 (en) 1993-08-26
EP0436439A1 (en) 1991-07-10
ES2042252T3 (en) 1993-12-01
DE69002317T2 (en) 1993-12-02
FR2656670A1 (en) 1991-07-05

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