EP0185587B1 - Security mechanism reacting to abnormal draught for a gas-heated hot water boiler without a permanent pilot flame - Google Patents

Security mechanism reacting to abnormal draught for a gas-heated hot water boiler without a permanent pilot flame Download PDF

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Publication number
EP0185587B1
EP0185587B1 EP85402423A EP85402423A EP0185587B1 EP 0185587 B1 EP0185587 B1 EP 0185587B1 EP 85402423 A EP85402423 A EP 85402423A EP 85402423 A EP85402423 A EP 85402423A EP 0185587 B1 EP0185587 B1 EP 0185587B1
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EP
European Patent Office
Prior art keywords
lever
branch
gas
activating
stop
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
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EP85402423A
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German (de)
French (fr)
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EP0185587A1 (en
Inventor
Yvan Poujoulat
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
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Saunier Duval Eau Chaude Chauffage SDECC SA
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Priority to AT85402423T priority Critical patent/ATE60122T1/en
Publication of EP0185587A1 publication Critical patent/EP0185587A1/en
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Publication of EP0185587B1 publication Critical patent/EP0185587B1/en
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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
    • F23N5/24—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 a safety mechanism for stopping a hot water production device of the gas water heater or gas bath type in the event of a draft anomaly in the flue gas evacuation pipe and particularly applies to devices without a permanent 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 breakdown. extractor, anomaly which causes the combustion products to be pushed back into the room.
  • thermosensitive element placed at the inlet of the draft hood, opens at a certain temperature and closes a gas intake solenoid valve.
  • a thermosensitive bulb acts on an expandable membrane which itself cuts off the admission of gas to the pilot of the device or acts directly on its thermoelectric safety mechanism to put the device in safety as described in the FR-A-2 106 736.
  • an abnormality of draft in a duct is detected by means of a small tube which modifies the operation of a pilot light with premix of air and gas and then switches the device on. security.
  • thermoelectric safety and that one cannot therefore intervene in reaction to an anomaly in the combustion products evacuation pipe.
  • the invention provides a solution to this problem in that it provides a safety mechanism acting positively on the gas inlet valve to the device, in response to a rise in temperature in a pipe for discharging burnt gases or in a VMC sheath, temperature detected by a heat-sensitive element.
  • the trigger lever comprises a disarming lever and a second disarming branch.
  • the disarming branch of the trigger lever and on the other hand the pivoting arm, one end of which bears against the cocking branch of the trigger lever are engaged between the stop and the stem.
  • the body 1 of the tap contains a valve 2 returned by a spring 3 on its seat 4. In the position shown, the valve is closed and closes the gas inlet duct 5. An operating rod 6 of the valve 2 is pressed against a cocking lever 7 pivoting around the axis 8. The end of this lever carries a boss 9 with a rounded edge allowing it to snap onto the hooking spout 10 of a trigger lever 11. The latter pivots freely around an axis 12.
  • a first branch 13 of said lever opposite to that carrying the hooking spout 10 is located inside a housing 14 containing a movable member consisting of an expandable bellows 15 connected to a liquid expansion bulb 16 placed in the VMC sheath
  • the movable lower part of the bellows is supported on a sleeve 17 movable inside the housing 14 and returned by a spring 18.
  • a stop 19 and a bracket 20 are integral of the sleeve which they follow the mo uvement.
  • the branch 13 of the trigger lever 11 and an arm 21 pivoting about an axis 22 are engaged between this stop 19 and this bracket 20.
  • the opposite end of the arm 21 can bear on the trigger lever 11 by means of an adjustable stop 23.
  • a disarming lever 24 also pivoting around the axis 8 acts on a second disarming branch 25 of the trigger lever 11 which it can pivot around the axis 12.
  • the figure shows the elements in the rest position when the valve 2 is closed on its seat 4.
  • the user when he wants to cock the device pulls the lever of the cocking lever 7 causing it to pivot around its axis 8, thus exercising a push on the rod 6 in the direction of opening of the valve against the return force of the spring 3.
  • the apparatus is thus armed and if there is drawing hot water the gas is admitted to the burners by the opening of an inlet valve not shown. If the combustion products are evacuated normally the bellows 15 occupies the position shown in the drawing, according to which the thrust of the spring 18 on the sleeve 17 is balanced by the internal pressure of the liquid in the bellows.
  • the first branch 13 of the trigger lever 11 occupies the position shown between the stop 19 and the bracket 20.
  • the bellows 15 expands against the spring 18; the stop 19 exerts a push on the first branch 13 of the lever il which rocks and the lever 7 emerges from the hooking spout 10.
  • the rod 6 being released, the valve 2 closes under the action of the spring 3 and the device no longer works.
  • the bulb 16 has cooled down, the device can be reset by acting on the lever of the lever 7.
  • This device is positively safe because in the event of a leak or failure of the bulb 16 or the bellows 15, the sleeve 17 under the effect of the spring 18 moves upwards in the housing 14.
  • the stem 20 driven in this movement makes pivot around its axis 22 the arm 21, the end of which act by means of the stop 23 on the trigger lever 11 in the direction of unlocking of the lever 7 and stopping of the device, as in the previous case.
  • the user after use, can disarm the device by acting on the pivoting lever 24, the upper end of which also turns the trigger lever 11 by means of the second disarming branch 25.

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Control Of Combustion (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Inorganic Fibers (AREA)
  • Looms (AREA)
  • Temperature-Responsive Valves (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention relates to a security mechanism for gas-heated apparatus. A displaceable member (15) controlled by a heat-sensitive element (16) is connected mechanically to a release lever (11) for the cocking mechanism (7, 6) of the tap (2) for admission of gas to the apparatus in order to cause the closure of the latter in the event of an increase in temperature. Application in gas-heated water boilers without a permanent pilot flame. <IMAGE>

Description

L'invention concerne un mécanisme de sécurité permettant l'arrêt d'un appareil de production d'eau chaude du genre chauffe-eau ou chauffe-bains à gaz en cas d'anomalie de tirage dans le conduit d'évacuation des gaz brûlés et s'applique particulièrement aux appareils sans veilleuse permanente.The invention relates to a safety mechanism for stopping a hot water production device of the gas water heater or gas bath type in the event of a draft anomaly in the flue gas evacuation pipe and particularly applies to devices without a permanent 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 V.M.C., 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 breakdown. extractor, anomaly which causes the combustion products to be pushed back into the room.

Il existe de nombreux dispositifs de sécurité adaptés à réagir à ces anomalies. Dans certains le contact électrique d'un élément thermosensible placé à l'entrée du coupe-tirage, s'ouvre à une certaine température et ferme une électrovalve d'admission gaz. Dans d'autres systèmes un bulbe thermosensible agit sur une membrane dilatable qui elle-même coupe l'admission de gaz à la veilleuse de l'appareil ou agit directement sur son mécanisme de sécurité thermoélectrique pour mettre l'appareil en sécurité comme décrit dans le FR-A-2 106 736. Pour d'autres installations on détecte une anomalie de tirage dans un conduit grâce à un petit tube qui modifie le fonctionnement d'une veilleuse à prémélange d'air et de gaz et met alors l'appareil en sécurité.There are many safety devices adapted to react to these anomalies. In some, the electrical contact of a thermosensitive element placed at the inlet of the draft hood, opens at a certain temperature and closes a gas intake solenoid valve. In other systems, a thermosensitive bulb acts on an expandable membrane which itself cuts off the admission of gas to the pilot of the device or acts directly on its thermoelectric safety mechanism to put the device in safety as described in the FR-A-2 106 736. For other installations, an abnormality of draft in a duct is detected by means of a small tube which modifies the operation of a pilot light with premix of air and gas and then switches the device on. security.

Il existe cependant une catégorie d'appareils de production d'eau chaude par le gaz à laquelle ces différents dispositifs ne peuvent s'appliquer, ce sont les chauffe-eau et chauffe-bains à fonctionnement sans veilleuse permanente qui n'utilisent pas de système de sécurité thermoélectrique et que l'on ne peut donc faire intervenir en réaction à une anomalie au conduit d'évacuation des produits de combustion.There is, however, a category of apparatus for producing hot water by gas to which these various devices cannot apply, it is the water heaters and bath heaters operating without a permanent pilot which do not use a system. thermoelectric safety and that one cannot therefore intervene in reaction to an anomaly in the combustion products evacuation pipe.

L'invention apporte une solution à ce problème en ce qu'elle propose un mécanisme de sécurité agissant de façon positive sur le robinet d'admission de gaz à l'appareil, en réaction à une élévation de température dans un conduit d'évacuation des gaz brûlés ou dans une gaine V.M.C., température détectée par un élément thermosensible.The invention provides a solution to this problem in that it provides a safety mechanism acting positively on the gas inlet valve to the device, in response to a rise in temperature in a pipe for discharging burnt gases or in a VMC sheath, temperature detected by a heat-sensitive element.

L'invention a donc pour objet un mécanisme de sécurité pour appareil à gas de production d'eau chaude sans veilleuse permanente, permettant son arrêt en cas d'anomalie dans l'évacuation de ses produits de combustion, ledit mécanisme comprend:

  • a) un levier d'armement pour ouvrir ou fermer le robinet d'admission gaz à l'appareil;
  • b) un levier de déclenchement comportant une branche d'armement munie d'un bec d'accrochage sur ledit levier d'armement et une première branche de désarmement, ledit levier de déclenchement est agencé de manière que son pivotement autour de son axe entraîne le désarmement dudit levier d'armement et la fermeture dudit robinet d'admission gaz sous l'effet d'un ressort de rappel dudit robinet;
  • c) un élément thermosensible réagissant à une élévation de température au niveau de l'évacuation des produits de combustion;
  • d) un organe déplaçable comportant un soufflet dilatable connecté audit élément thermosensible et une butée agissant sur la première branche de désarmement pour assurer la fermeture dudit robinet d'admission en cas d'anomalie,

elle se caractérisé par le fait que ledit organe déplaçable comporte en outre un manchon rappelé par un ressort, manchon qui porte en plus de la butée une potence pouvant faire pivoter le levier de déclenchement par l'intermédiaire d'un bras pivotant.The subject of the invention is therefore a safety mechanism for a gas appliance for producing hot water without a permanent pilot light, enabling it to be stopped in the event of an anomaly in the evacuation of its combustion products, said mechanism comprises:
  • a) an arming lever to open or close the gas inlet valve to the appliance;
  • b) a trigger lever comprising an arming branch provided with a hooking spout on said arming lever and a first disarming branch, said trigger lever is arranged so that its pivoting about its axis causes the disarming said cocking lever and closing said gas inlet valve under the effect of a return spring of said valve;
  • c) a thermosensitive element reacting to a rise in temperature at the level of the evacuation of the combustion products;
  • d) a movable member comprising an expandable bellows connected to said thermosensitive element and a stop acting on the first disarming branch to ensure the closing of said inlet valve in the event of an anomaly,

it is characterized by the fact that said displaceable member further comprises a sleeve returned by a spring, a sleeve which carries, in addition to the stop, a bracket capable of pivoting the trigger lever by means of a pivoting arm.

Selon une autre caractéristique particulière de l'invention le levier de déclenchement comporte un levier de désarmement et une deuxième branche de désarmement.According to another particular characteristic of the invention, the trigger lever comprises a disarming lever and a second disarming branch.

Selon encore une autre caractéristique de l'invention, d'une part la branche de désarmement du levier de déclenchement, et d'autre part le bras pivotant dont une extrémité vient en appui contre la branche d'armement du levier de déclenchement sont engagés entre la butée et la potence.According to yet another characteristic of the invention, on the one hand the disarming branch of the trigger lever, and on the other hand the pivoting arm, one end of which bears against the cocking branch of the trigger lever are engaged between the stop and the stem.

D'autres caractéristiques et avantages de l'invention ressortiront à la lecture de la description qui va suivre d'un exemple non limitative de réalisation en référence au dessin annexé qui représente une vue en coupe du mécanisme.Other characteristics and advantages of the invention will emerge on reading the description which follows of a nonlimiting example of embodiment with reference to the appended drawing which represents a sectional view of the mechanism.

Le corps 1 du robinet renferme un clapet 2 rappelé par un ressort 3 sur son siège 4. Dans la position représentée le clapet est fermé et obture le conduit d'arrivée de gaz 5. Une tige de manoeuvre 6 du clapet 2 est en appui contre un levier d'armement 7 pivotant autour de l'axe 8. L'extrémité de ce levier porte un bossage 9 à bord arrondi lui permettant de s'encliqueter sur le bec d'accrochage 10 d'un levier de déclenchement 11. Ce dernier pivote librement autour d'un axe 12. Une premiére branche 13 dudit levier opposée à celle portant le bec d'accrochage 10 se trouve à l'intérieur d'un boitier 14 renfermant un organe déplaçable constitué d'un soufflet dilatable 15 relié à un bulbe à dilatation de liquide 16 placé dans la gaine V.M.C. La partie inférieure mobile du soufflet est en appui sur un manchon 17 déplaçable à l'intérieur du boîtier 14 et rappelé par un ressort 18. Une butée 19 ainsi qu'une potence 20 sont solidaires du manchon dont elles suivent le mouvement. La branche 13 du levier de déclenchement 11 ainsi qu'un bras 21 pivotant autour d'une axe 22 sont engagés entre cette butée 19 et cette potence 20. L'extrémité opposée du bras 21 peut prendre appui sur le levier de déclenchement 11 par l'intermédiaire d'une butée réglable 23. Enfin un levier de désarmement 24 pivotant aussi autour de l'axe 8 agit sur une deuxième branche de désarmement 25 du levier de déclenchement 11 qu'il peut faire pivoter autour de l'axe 12.The body 1 of the tap contains a valve 2 returned by a spring 3 on its seat 4. In the position shown, the valve is closed and closes the gas inlet duct 5. An operating rod 6 of the valve 2 is pressed against a cocking lever 7 pivoting around the axis 8. The end of this lever carries a boss 9 with a rounded edge allowing it to snap onto the hooking spout 10 of a trigger lever 11. The latter pivots freely around an axis 12. A first branch 13 of said lever opposite to that carrying the hooking spout 10 is located inside a housing 14 containing a movable member consisting of an expandable bellows 15 connected to a liquid expansion bulb 16 placed in the VMC sheath The movable lower part of the bellows is supported on a sleeve 17 movable inside the housing 14 and returned by a spring 18. A stop 19 and a bracket 20 are integral of the sleeve which they follow the mo uvement. The branch 13 of the trigger lever 11 and an arm 21 pivoting about an axis 22 are engaged between this stop 19 and this bracket 20. The opposite end of the arm 21 can bear on the trigger lever 11 by means of an adjustable stop 23. Finally a disarming lever 24 also pivoting around the axis 8 acts on a second disarming branch 25 of the trigger lever 11 which it can pivot around the axis 12.

Le mécanisme de sécurité ainsi décrit fonctionne de la façon suivante.The security mechanism thus described operates as follows.

La figure montre les éléments en position repos quand le clapet 2 est fermé sur son siège 4. L'utilisateur lorsqu'il veut armer l'appareil tire la manette du levier d'armement 7 la faisant pivoter autour de son axe 8 en exerçant ainsi une poussée sur la tige 6 dans le sens de l'ouverture du clapet à l'encontre de la force de rappel du ressort 3.The figure shows the elements in the rest position when the valve 2 is closed on its seat 4. The user when he wants to cock the device pulls the lever of the cocking lever 7 causing it to pivot around its axis 8, thus exercising a push on the rod 6 in the direction of opening of the valve against the return force of the spring 3.

En même temps est assuré l'encliquetage du bossage 9 sur le bec d'accrochage 10 du levier de déclenchement 11. L'appareil est ainsi armé et s'il y a puisage d'eau chaude le gaz est admis aux brûleurs par l'ouverture d'un clapet d'admission non représenté. Si l'évacuation des produits de combustion s'effectue normalement le soufflet 15 occupe la position représentée sur le dessin, selon laquelle la poussée du ressort 18 sur le manchon 17 est équilibrée par la pression interne du liquide dans le soufflet. La première branche 13 du levier de déclenchement 11 occupe la position représentée entre la butée 19 et la potence 20.At the same time is ensured the latching of the boss 9 on the hooking spout 10 of the trigger lever 11. The apparatus is thus armed and if there is drawing hot water the gas is admitted to the burners by the opening of an inlet valve not shown. If the combustion products are evacuated normally the bellows 15 occupies the position shown in the drawing, according to which the thrust of the spring 18 on the sleeve 17 is balanced by the internal pressure of the liquid in the bellows. The first branch 13 of the trigger lever 11 occupies the position shown between the stop 19 and the bracket 20.

S'il y a une anomalie au niveau de l'évacuation des produits de combustion de l'appareil caractérisée par l'échauffement du bulbe 16, le soufflet 15 se dilate à l'encontre du ressort 18; la butée 19 exerce une poussée sur la première branche 13 du levier il qui bascule et le levier 7 se dégage du bec d'accrochage 10. La tige 6 étant libérée, le clapet 2 se referme sous l'action du ressort 3 et l'appareil ne fonctionne plus. Quand de bulbe 16 s'est refroidi, on peut réarmer l'appareil en agissant sur la manette du levier 7.If there is an anomaly in the evacuation of the combustion products from the appliance, characterized by the heating of the bulb 16, the bellows 15 expands against the spring 18; the stop 19 exerts a push on the first branch 13 of the lever il which rocks and the lever 7 emerges from the hooking spout 10. The rod 6 being released, the valve 2 closes under the action of the spring 3 and the device no longer works. When the bulb 16 has cooled down, the device can be reset by acting on the lever of the lever 7.

Ce dispositif est à sécurité positive car en cas de fuite ou de défaillance du bulbe 16 ou du soufflet 15, le manchon 17 sous l'effet du ressort 18 se déplace vers le haut dans le boitier 14. La potence 20 entraînée dans ce mouvement fait pivoter autour de son axe 22 le bras 21 dont l'extrémité agir par l'intermédiaire de la butée 23 sur le levier de déclenchement 11 dans le sens du désencli- quetage du levier 7 et de l'arrêt de l'appareil, comme dans le cas précédent.This device is positively safe because in the event of a leak or failure of the bulb 16 or the bellows 15, the sleeve 17 under the effect of the spring 18 moves upwards in the housing 14. The stem 20 driven in this movement makes pivot around its axis 22 the arm 21, the end of which act by means of the stop 23 on the trigger lever 11 in the direction of unlocking of the lever 7 and stopping of the device, as in the previous case.

Enfin l'utilisateur, après usage, peut désarmer l'appareil en agissant sur le levier pivotant 24 dont l'extrémité supérieure fait également tourner le levier de déclenchement 11 par l'intermédiaire de la deuxième branche de désarmement 25.Finally, the user, after use, can disarm the device by acting on the pivoting lever 24, the upper end of which also turns the trigger lever 11 by means of the second disarming branch 25.

Claims (4)

1. Safety mechanism for gas-heated apparatus for producing hot water, without a permanent pilotflame, enabling it to be shut down in the case of abnormality in the evacuation of its combustion products, the said mechanism comprising:
a) an activating lever (7) for opening or closing the stopcock (2) for admitting gas to the apparatus;
b) a triggering lever (11) comprising an activating branch (10) equipped with a catch, for hooking onto the said activating lever (7), and a first deactivating branch (13), the said triggering lever being designed in such a manner that the pivoting thereof about its spindle (12) causes the deactivation of the said activating lever and the closure of the said gas admission stopcock (2) under the effect of a return spring (3) of the said stopcock;
c) a heat-sensitive element (16) reacting to a temperature rise at the level of the evacuation of the combustion products;
d) a displaceable means comprising an expansion bellows (15) connected to the said heat-sensitive element (16) and a stop (19) acting on the first deactivating branch (13) so as to ensure the closure of the said admission stopcock in the case of abnormality, characterized in that the said displaceable means additionally comprises a sleeve (17) returned by a spring (18), which sleeve carries in addition to the stop (19) a bracket (20) capable of causing the triggering lever (11) to swivel by means of a pivoting arm (21).
2. Safety mechanism according to Claim 1, characterized in that the triggering lever (11) comprises an activating lever (24) and a second deactivating branch (25).
3. Safety mechanism according to Claim 1, characterized in that on the one hand the first deactivating branch (13) of the triggering lever (11) and on the other hand the pivoting arm (21), one end of which bears against the activating branch of the triggering lever (11), are fitted between the stop (19) and the bracket (20).
4. Safety mechanism according to Claim 3, characterized in that an adjustable stop (23) is mounted on the activating branch (10) of the triggering lever (11) between the said branch and the pivoting arm (21).
EP85402423A 1984-12-07 1985-12-05 Security mechanism reacting to abnormal draught for a gas-heated hot water boiler without a permanent pilot flame Expired - Lifetime EP0185587B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85402423T ATE60122T1 (en) 1984-12-07 1985-12-05 SAFETY MECHANISM RESPONDING TO ABNORMAL DRAFT FOR GAS HEATED WATER Boilers WITHOUT PERMANENT WATCH FLAME.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8418688 1984-12-07
FR8418688A FR2574526B1 (en) 1984-12-07 1984-12-07 SAFETY MECHANISM REACTING TO A DRAFT FAULT FOR A GAS APPARATUS FOR PRODUCING HOT WATER WITHOUT PERMANENT PILOT

Publications (2)

Publication Number Publication Date
EP0185587A1 EP0185587A1 (en) 1986-06-25
EP0185587B1 true EP0185587B1 (en) 1991-01-16

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Application Number Title Priority Date Filing Date
EP85402423A Expired - Lifetime EP0185587B1 (en) 1984-12-07 1985-12-05 Security mechanism reacting to abnormal draught for a gas-heated hot water boiler without a permanent pilot flame

Country Status (5)

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EP (1) EP0185587B1 (en)
AT (1) ATE60122T1 (en)
DE (2) DE3581384D1 (en)
ES (1) ES8608660A1 (en)
FR (1) FR2574526B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606854B1 (en) * 1986-11-17 1989-03-03 Sdecc INTEGRATED SAFETY GAS INLET VALVE FOR HOT WATER PRODUCTION DEVICE WITHOUT PERMANENT PILOT LIGHT
FR2626354B1 (en) * 1988-01-26 1990-06-22 Sdecc LOW PRESSURE GAS SECURITY SYSTEM SUITABLE FOR AN INLET VALVE HAVING A METASTABLE THERMAL SAFETY MECHANISM CONTROLLING THE CORRECT DISCHARGE OF COMBUSTION PRODUCTS
FR2673703B1 (en) * 1991-03-06 1996-12-06 Innovations Tech GAS APPARATUS WITH OVERHEATING SECURITY.
FR2731776B1 (en) * 1995-03-16 1997-04-25 Dtn Fr Sa SAFETY DEVICE OR PASSIVE REGULATION FOR HEATING APPARATUS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1301169A (en) * 1961-09-20 1962-08-10 Saunier Duval Very low inertia flame detector device for gas appliances and in particular for instantaneous water heaters and gas bath heaters operating without a standing pilot
FR1509085A (en) * 1966-10-17 1968-01-12 Saunier Duval Safety device making it possible to cut off the gas supply to the burner of a gas appliance in the event of insufficient draft from the flue to which the appliance is connected or in the event of discharge through said conduit
FR2106736A6 (en) * 1970-09-23 1972-05-05 Saunier Duval
FR2147500A5 (en) * 1971-07-29 1973-03-09 Denisselle Jean

Also Published As

Publication number Publication date
FR2574526A1 (en) 1986-06-13
EP0185587A1 (en) 1986-06-25
ES8608660A1 (en) 1986-07-16
FR2574526B1 (en) 1987-01-02
ES549533A0 (en) 1986-07-16
DE3581384D1 (en) 1991-02-21
DE185587T1 (en) 1986-11-27
ATE60122T1 (en) 1991-02-15

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