EP0011568A1 - Improvement in sealed forced-draught domestic gas apparatuses - Google Patents

Improvement in sealed forced-draught domestic gas apparatuses Download PDF

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Publication number
EP0011568A1
EP0011568A1 EP79400862A EP79400862A EP0011568A1 EP 0011568 A1 EP0011568 A1 EP 0011568A1 EP 79400862 A EP79400862 A EP 79400862A EP 79400862 A EP79400862 A EP 79400862A EP 0011568 A1 EP0011568 A1 EP 0011568A1
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EP
European Patent Office
Prior art keywords
valve
enclosure
exhaust
appliance
burner
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.)
Granted
Application number
EP79400862A
Other languages
German (de)
French (fr)
Other versions
EP0011568B1 (en
Inventor
Jean-Claude Charron
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 SA
Saunier Duval Eau Chaude Chauffage SDECC SA
Original Assignee
Saunier Duval SA
Saunier Duval Eau Chaude Chauffage SDECC 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 Saunier Duval SA, Saunier Duval Eau Chaude Chauffage SDECC SA filed Critical Saunier Duval SA
Publication of EP0011568A1 publication Critical patent/EP0011568A1/en
Application granted granted Critical
Publication of EP0011568B1 publication Critical patent/EP0011568B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/04—Regulating fuel supply conjointly with air supply and with draught
    • F23N1/045—Regulating fuel supply conjointly with air supply and with draught using electrical or electromechanical means
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/305—Control of valves
    • F24H15/31—Control of valves of valves having only one inlet port and one outlet port, e.g. flow rate regulating valves
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/345—Control of fans, e.g. on-off control
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/02—Ventilators in stacks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/20—Membrane valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/24—Valve details

Definitions

  • the invention relates to gas tight devices with forced draft. We know that when studying and developing this type of device, we generally encounter difficulties in finding ways to ensure the renewal of the air necessary for the combustion of the pilot light. during periods of non-operation of the burner and the exhaust fan.
  • This pre-sweep consists in operating the exhaust fan to evacuate any accumulations of gas or combustion products; according to the standards, it must last a certain time which depends on the volume of the combustion circuit. It is not inconvenient for the user if he only intervenes when lighting the pilot of a device of the permanent pilot type; on the other hand it is unacceptable if it is a question of lighting the burner of an appliance of the type of instantaneous production of hot water because it would excessively lengthen the time which would elapse between the opening of a hot water tap and obtaining this water at a usable temperature and in any event this time would greatly exceed that of maximum imposed by standards.
  • the invention provides an effective solution to this problem since it precisely makes it possible to avoid this pre-sweep operation, by the fact that in a period of non-ignition of the burner, the sealed enclosure is directly open to outside air, that is to say that the device is no longer waterproof and is therefore not subject to the requirements of pre-sweeping while, upon ignition of the burner, the sealing of said enclosure is restored.
  • the sealed enclosure is provided with an air inlet orifice which can be closed by a valve normally open when the device is not operating, but which closes automatically as soon as the device operates to replace this under normal operating conditions of a waterproof device.
  • the closing movement of the valve is slaved to the lifting movement of the differential diaphragm controlling the admission of gas to the burner, by closing a contact for energizing d 'an electromagnetic mechanism for operating said valve.
  • the servo-control of the exhaust fan when the burner is started is effected by means of said valve closing mechanism.
  • the combustion chamber 1 disposed above the burner rails and containing the heating body 6 is capped by a hood 3 connected to the outside by a pipe 4 for discharging the burnt gases extracted from the appliance by the fan 5
  • the combustion chamber 1 slightly overflows the burners 2, so that all the hot gases reach the heating element.
  • the combustion chamber-burner assembly is surrounded by a sealed enclosure 7 connected to the outside by the fresh air supply duct 8 coaxial with the exhaust tube 4.
  • the exhaust fan 5 operates the air fresh air admitted inside the sealed enclosure promotes combustion with the burner and establishes a circulation of combustion products from bottom to top inside chamber 1 as indicated by the arrows.
  • the admission of gas to the burner 2, lit by the pilot 18, is controlled by a valve 9 whose movement is controlled by that of the chamber 11 of a conventional mechanism 10 reacting to the drawing of water.
  • the sealed enclosure 7 is provided at its base with an air inlet orifice 15 which can be closed by a pivoting valve 16 recalled by a spring 19.
  • a rod 12 integral with the movement of this membrane 11 acts on a switch 13 for energizing an electromagnet 14 whose movable core operates the pivoting valve 16.
  • a contactor 17 reacts to the tilting movement of said valve in the direction of activation on the exhaust fan 5.
  • valve 16 When the device does not work, under the effect of the spring 19, the valve 16 is held in the open position as shown by the dotted line representation in the drawing. Fresh air arrives in the sealed enclosure and a natural convection is established which is sufficient for the pilot light supply.
  • the device works like a waterproof device; the drawing represents it in the operating position.
  • the valve 16 reopens under the effect of the spring 19.
  • This opening movement which causes the contact 17 to switch off causes the fan with a very slight delay (due to its inertia) compared to the opening of the valve 16.
  • the invention is not limited to the embodiment described above, but encompasses all variants thereof, in particular in the arrangement of the orifice, the shutter valve and the electrical contacts.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

1. An appliance for the domestic use of gas, of the type gastight under forced draught, including an exhaust fan (5) upstream of the duct (4) for exhaust of the burnt gases proceeding from a combustion chamber, and a gastight enclosure enveloping this chamber and the mechanisms and connected to the outside through a duct (8) for the supply of fresh air at the level of the exhaust duct, characterized by the fact that the gastight enclosure is in addition put into direct communication with the atmosphere of the environment through an aperture (15) provided in the wall of the enclosure, which is shut off by a flap valve (16) which is normally open in the event of stoppage of the appliance and which is reclosed automatically as soon as the appliance operates, in order to restore the latter to the normal conditions of operation of a gastight appliance.

Description

L'invention se rapporte aux appareils étanches a gaz a tirage forcé. On sait que Tors de l'étude et de la mise au point de ce type d'appareil on rencontre généralement des difficultés pour trouver des moyens qui permettent d'assurer le renouvellement de l'air nécessaire a la combustion de la veilleuse d'allumage pendant les périodes de non fonctionnement du brûleur et du ventilateur d'extraction.The invention relates to gas tight devices with forced draft. We know that when studying and developing this type of device, we generally encounter difficulties in finding ways to ensure the renewal of the air necessary for the combustion of the pilot light. during periods of non-operation of the burner and the exhaust fan.

En effet, si dans certaines conditions d'installation où l'épaisseur du mur traversé par la ventouse est normal, et où les conditions climatologiques sont elles même normales, on peut utiliser l'effet du tirage thermique naturel produit par la veilleuse pour assurer le renouvellement de l'air nécessaire a sa combustion ; cette solution simple n'est plus possible dans tous les cas extrêmes où le trajet suivi par la ventouse s'allonge ou se complique d'un ou plusieurs coudes et aussi dans certains cas extrêmes de température et d'humidité de l'atmosphère extérieure. On sait aussi que sur les appareils du type étanche a tirage forcé, en raison de la faible section des orifices qui mettent le circuit de combustion étanche en communication avec l'atmosphère extérieure au mur, les normes actuelles rendent obligatoires un prébalayage du circuit de combustion avant toute Qpération d'allumage à l'intérieur de ce circuit. Ce prébalayage consiste a faire fonctionner le ventilateur d'extraction pour évacuer les éventuelles accumulations de gaz ou de produits de combustion; selon les normes, il doit durer un certain temps qui est fonction du volume du circuit de combustion. Il n'est pas gênant pour l'utilisateur s'il n'intervient que lors de l'allumage de la veilleuse d'un appareil du type à veilleuse permanente ; par contre il est inacceptable s'il s'agit de l'allumage du brûleur d'un appareil du type à production instantanée d'eau chaude car il allongerait d'une façon démesurée le temps qui s'écoulerait entre l'ouverture d'un robinet d'eau chaude et l'obtention de cette eau à température utilisable et en tout état de cause ce temps dépasserait largement celui du maximum imposé par les normes.Indeed, if in certain installation conditions where the thickness of the wall crossed by the suction cup is normal, and where the climatological conditions are themselves normal, we can use the effect of the natural thermal draft produced by the pilot light to ensure the renewal of the air necessary for its combustion; this simple solution is no longer possible in all extreme cases where the path followed by the suction cup lengthens or becomes complicated by one or more elbows and also in certain extreme cases of temperature and humidity of the external atmosphere. We also know that on devices of the sealed type with forced draft, due to the small section of the orifices which put the sealed combustion circuit in communication with the atmosphere outside the wall, current standards make a pre-sweep of the combustion circuit mandatory. before any Q peration ignition inside this circuit. This pre-sweep consists in operating the exhaust fan to evacuate any accumulations of gas or combustion products; according to the standards, it must last a certain time which depends on the volume of the combustion circuit. It is not inconvenient for the user if he only intervenes when lighting the pilot of a device of the permanent pilot type; on the other hand it is unacceptable if it is a question of lighting the burner of an appliance of the type of instantaneous production of hot water because it would excessively lengthen the time which would elapse between the opening of a hot water tap and obtaining this water at a usable temperature and in any event this time would greatly exceed that of maximum imposed by standards.

On a essayé de tourner le problème en maintenant en permanence un balayage à débit réduit sur des appareils étanches à tirage forcé fonctionnant sans veilleuse permanente mais on se heurte à un autre problème qui est le risque de gel de l'eau contenue dans le corps de chauffe lorsque la température extérieure descend au-dessous de 0°C.We have tried to get around the problem by constantly maintaining a reduced flow sweep on sealed forced draft devices operating without a permanent pilot, but we come up against another problem which is the risk of freezing of the water contained in the body of heats up when the outside temperature drops below 0 ° C.

Que ce soit par conséquent pour des appareils du type à veilleuse permanente ou des appareils fonctionnant sans veilleuse permanente, la nécessité d'un prébalayage du circuit de combustion avant l'allumage du brûleur présente de sérieux inconvénients comme indiqué précédemment.Whether it is consequently for appliances of the permanent pilot type or appliances operating without permanent pilot, the need to pre-purge the combustion circuit before lighting the burner has serious drawbacks as indicated above.

L'invention apporte une solution efficace a ce problème puisqu'elle permet justement d'éviter cette opération de prébalayage, par le fait qu'en période de non-allumage du brûleur, l'enceinte étanche est directement ouverte à l'air extérieur, c'est-à-dire que l'appareil n'est plus étanche et n'est par conséquent pas soumis aux impératifs de prébalayage tandis, que dès l'allumage du brûleur, l'étanchéité de ladite enceinte est rétablie.The invention provides an effective solution to this problem since it precisely makes it possible to avoid this pre-sweep operation, by the fact that in a period of non-ignition of the burner, the sealed enclosure is directly open to outside air, that is to say that the device is no longer waterproof and is therefore not subject to the requirements of pre-sweeping while, upon ignition of the burner, the sealing of said enclosure is restored.

Suivant l'invention, l'enceinte étanche est munie d'un orifice d'entrée d'air pouvant être obturé par un clapet normalement ouvert quand l'appareil ne fonctionne pas, mais qui se referme automatiquement dès que l'appareil fonctionne pour replacer celui-ci dans les conditions normales de fonctionnement d'un appareil étanche. A cet effet, selon une caractéristique particulière de l'invention, le mouvement de fermeture du clapet est asservi au mouvement de levée de la membrane différentielle commandant l'admission de gaz au brûleur, par la fermeture d'un contact de mise sous tension d'un mécanisme électromagnétique de manoeuvre dudit clapet.According to the invention, the sealed enclosure is provided with an air inlet orifice which can be closed by a valve normally open when the device is not operating, but which closes automatically as soon as the device operates to replace this under normal operating conditions of a waterproof device. To this end, according to a particular characteristic of the invention, the closing movement of the valve is slaved to the lifting movement of the differential diaphragm controlling the admission of gas to the burner, by closing a contact for energizing d 'an electromagnetic mechanism for operating said valve.

Selon une caractéristique complémentaire de l'invention, l'asservissement du ventilateur d'extraction à la mise en route du brûleur s'effectue par l'intermédiaire dudit mécanisme de fermeture du clapet.According to a complementary characteristic of the invention, the servo-control of the exhaust fan when the burner is started is effected by means of said valve closing mechanism.

L'invention sera mieux comprise a la lecture de la description suivante d'un exemple de réalisation qui en fera ressortir les autres caractéristiques et avantages. ,The invention will be better understood on reading the following description of an exemplary embodiment which will bring out the other features and benefits. ,

On se réfère au dessin annexé qui représente une vue en coupe schématique de l'appareil.Reference is made to the appended drawing which represents a schematic sectional view of the apparatus.

La chambre de combustion 1 disposée au-dessus des rampes de brûleurs et renfermant le corps de chauffe 6 est coiffée par une hotte 3 raccordée à l'extérieur par une tubulure 4 d'évacuation des gaz brûlés extraits de l'appareil par le ventilateur 5. La chambre de combustion 1 déborde légèrement les brûleurs 2, pour que tous les gaz chauds atteignent le corps de chauffe.The combustion chamber 1 disposed above the burner rails and containing the heating body 6 is capped by a hood 3 connected to the outside by a pipe 4 for discharging the burnt gases extracted from the appliance by the fan 5 The combustion chamber 1 slightly overflows the burners 2, so that all the hot gases reach the heating element.

L'ensemble chambre de combustion-brûleur est enveloppé d'une enceinte étanche 7 raccordée à l'extérieur par le conduit d'alimentation en air frais 8 coaxial au tube d'évacuation 4. Quand le ventilateur d'extraction 5 fonctionne l'air frais admis à l'intérieur de l'enceinte étanche favorise la combustion au brûleur et établit une circulation des produits de combustion de bas en haut à l'intérieur de la chambre 1 comme indiqué par les flèches. L'admission de gaz au brûleur 2, allumé par la veilleuse 18, est commandée par un clapet 9 dont le mouvement est asservi à celui de la chambre 11 d'un mécanisme classique 10 réagissant au puisage d'eau.The combustion chamber-burner assembly is surrounded by a sealed enclosure 7 connected to the outside by the fresh air supply duct 8 coaxial with the exhaust tube 4. When the exhaust fan 5 operates the air fresh air admitted inside the sealed enclosure promotes combustion with the burner and establishes a circulation of combustion products from bottom to top inside chamber 1 as indicated by the arrows. The admission of gas to the burner 2, lit by the pilot 18, is controlled by a valve 9 whose movement is controlled by that of the chamber 11 of a conventional mechanism 10 reacting to the drawing of water.

L'enceinte étanche 7 est munie à sa base d'un orifice d'entrée d'air 15 pouvant être obturé par un clapet pivotant 16 rappelé par un ressort 19.The sealed enclosure 7 is provided at its base with an air inlet orifice 15 which can be closed by a pivoting valve 16 recalled by a spring 19.

Une tige 12 solidaire du mouvement de cette membrane 11 agit sur un interrupteur 13 de mise sous tension d'un électroaimant 14 dont le noyau mobile manoeuvre le clapet pivotant 16. Un contacteur 17 réagit au mouvement de basculement dudit clapet dans le sens de la mise sous tension du ventilateur d'extraction 5.A rod 12 integral with the movement of this membrane 11 acts on a switch 13 for energizing an electromagnet 14 whose movable core operates the pivoting valve 16. A contactor 17 reacts to the tilting movement of said valve in the direction of activation on the exhaust fan 5.

Quand l'appareil ne fonctionne pas, sous l'effet du ressort 19, le clapet 16 est maintenu en position ouverte comme le montre la représentation en pointillé sur le dessin. L'air frais parvient dans l'enceinte étanche et une convection naturelle s'établit qui est suffisante pour l'alimentation de la veilleuse .When the device does not work, under the effect of the spring 19, the valve 16 is held in the open position as shown by the dotted line representation in the drawing. Fresh air arrives in the sealed enclosure and a natural convection is established which is sufficient for the pilot light supply.

Dès qu'il y a puisage d'eau, le déplacement de la membrane 11, en même temps qu'il commande l'ouverture du clapet d'admission- gaz 9, ferme le contact de l'interrupteur 13 par l'intermédiaire de la tige 12. Le noyau mobile de l'électroaimant 14 mis sous tension agit sur le levier de manoeuvre du clapet 16 dans le sens de la fermeture de ce dernier. Parallèlement il ferme l'autre contact 17 de mise sous tension du ventilateur 5 qui se met à tourner. L'appareil fonctionne comme un appareil étanche; le dessin le représente en position de fonctionnement.As soon as there is drawing of water, the displacement of the membrane 11, at the same time as it controls the opening of the gas inlet valve 9, closes the contact of the switch 13 by means of the rod 12. The mobile core of the electromagnet 14 energized acts on the operating lever of the valve 16 in the direction of closing of the latter. At the same time it closes the other contact 17 for energizing the fan 5 which starts to rotate. The device works like a waterproof device; the drawing represents it in the operating position.

Dès l'arrêt du puisage et la coupure du contact d'alimentation de l'électroaimant 14, le clapet 16 se rouvre sous l'effet du ressort 19. Ce mouvement d'ouverture qui entraine la coupure du contact 17 provoque l'arrêt du ventilateur avec un très léger retard (dû à son inertie) par rapport à l'ouverture du clapet 16. C'est un avantage complémentaire intéressant car cela permet une élimination efficace complémentaire des derniers produits de combustion qui pourraient subsister dans l'appareil. L'invention ne se limite pas à la forme de réalisation décrite précédemment, mais en englobe toutes les variantes notamment dans la disposition de l'orifice, du clapet obturateur et des contacts électriques.As soon as the drawing off stops and the supply contact of the electromagnet 14 is cut off, the valve 16 reopens under the effect of the spring 19. This opening movement which causes the contact 17 to switch off causes the fan with a very slight delay (due to its inertia) compared to the opening of the valve 16. This is an additional advantage which is interesting because it allows an additional efficient elimination of the last combustion products which could remain in the appliance. The invention is not limited to the embodiment described above, but encompasses all variants thereof, in particular in the arrangement of the orifice, the shutter valve and the electrical contacts.

Claims (4)

1°/ Appareil d'utilisation domestique du gaz du type étanche à tirage forcé comportant un ventilateur d'extraction en amont du conduit d'évacuation des gaz brûlés provenant d'une chambre de combustion, et d'une enceinte étanche enveloppant cette chambre et les mécanismes et raccordée à l'extérieur par un conduit d'alimentation en air frais au niveau du conduit d'évacuation caractérisé par le fait que l'enceinte étanche est en outre mise en communication directe avec l'atmosphère du local par un orifice (15) prévu dans la paroi de l'enceinte, qui est obturé par un clapet (16) normalement ouvert en cas d' arrêt de l'appareil, et qui se referme automatiquement dès que l'appareil fonctionne pour replacer celui-ci dans les conditions normales de fonctionnement d'un appareil étanche.1 ° / Apparatus for domestic use of the leaktight type of forced draft comprising an extraction fan upstream of the exhaust pipe for the burnt gases coming from a combustion chamber, and of a sealed enclosure enveloping this chamber and the mechanisms and connected to the outside by a fresh air supply duct at the level of the exhaust duct characterized in that the sealed enclosure is also placed in direct communication with the atmosphere of the premises by an orifice ( 15) provided in the wall of the enclosure, which is closed by a valve (16) normally open in the event of stopping the device, and which closes automatically as soon as the device operates to replace it in the normal operating conditions of a waterproof device. '2°/ Appareil selon la revendication 1 caractérisé par le fait que le mouvement de fermeture du clapet (16) est asservi au mouvement de levée de la membrane différentielle (11) commandant l'admission de gaz au brûleur, par l'intermédiaire d'un contact (13) de mise sous tension d'un mécanisme électromagnétique (14) de manoeuvre dudit clapet.'2 ° / Apparatus according to claim 1 characterized in that the closing movement of the valve (16) is controlled by the lifting movement of the differential diaphragm (11) controlling the admission of gas to the burner, via d 'A contact (13) for energizing an electromagnetic mechanism (14) for operating said valve. 3°/ Appareil selon la revendication 1 caractérisé par le fait que l'asservissement du ventilateur d'extraction (5) à la mise en route du brûleur s'effectue par l'intermédiaire du mécanisme de fermeture du clapet (16).3 ° / Apparatus according to claim 1 characterized in that the control of the exhaust fan (5) to the start of the burner is effected by means of the valve closing mechanism (16). 4*1 Appareil selon la revendication 3 caractérisé par le fait que l'asservissement du ventilateur (5) est assuré par un contacteur (17) manoeuvré directement par le clapet (16) ou par un organe associé audit clapet.4 * 1 Apparatus according to claim 3 characterized in that the control of the fan (5) is provided by a contactor (17) operated directly by the valve (16) or by a member associated with said valve.
EP79400862A 1978-11-15 1979-11-14 Improvement in sealed forced-draught domestic gas apparatuses Expired EP0011568B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7832251A FR2441799A1 (en) 1978-11-15 1978-11-15 IMPROVEMENT IN APPLIANCES FOR DOMESTIC USE OF GAS OF THE WATERPROOF TYPE WITH FORCED DRAFT
FR7832251 1978-11-15

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Publication Number Publication Date
EP0011568A1 true EP0011568A1 (en) 1980-05-28
EP0011568B1 EP0011568B1 (en) 1982-06-30

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EP79400862A Expired EP0011568B1 (en) 1978-11-15 1979-11-14 Improvement in sealed forced-draught domestic gas apparatuses

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EP (1) EP0011568B1 (en)
DE (1) DE2963271D1 (en)
FR (1) FR2441799A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655410A1 (en) * 1989-12-04 1991-06-07 Sdecc FORCE DRAIN GAS DRY BOILER USING AN ANTI-CONDENSATION THERMOCONTACT.
CN106568201A (en) * 2016-07-30 2017-04-19 广东万和新电气股份有限公司 Antifreezing water heater, control terminal and antifreezing system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE221710C (en) *
FR833553A (en) * 1937-06-18 1938-10-25 Chalot Ets Hot water producer by gas in sealed circuit balance
US2815768A (en) * 1956-01-09 1957-12-10 Roberts Appliance Corp Gordon Control means for gaseous fuel burners
FR2358618A1 (en) * 1976-07-15 1978-02-10 Leblanc Sa E L M METHOD AND DEVICE FOR REGULATING THE AIR FLOW OF A TIGHT, GAS-HEATED BOILER

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE221710C (en) *
FR833553A (en) * 1937-06-18 1938-10-25 Chalot Ets Hot water producer by gas in sealed circuit balance
US2815768A (en) * 1956-01-09 1957-12-10 Roberts Appliance Corp Gordon Control means for gaseous fuel burners
FR2358618A1 (en) * 1976-07-15 1978-02-10 Leblanc Sa E L M METHOD AND DEVICE FOR REGULATING THE AIR FLOW OF A TIGHT, GAS-HEATED BOILER

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655410A1 (en) * 1989-12-04 1991-06-07 Sdecc FORCE DRAIN GAS DRY BOILER USING AN ANTI-CONDENSATION THERMOCONTACT.
EP0432020A1 (en) * 1989-12-04 1991-06-12 Saunier Duval Eau Chaude Chauffage - Sdecc Air-tight heater with forced draft using an anti-condensation thermocontact
CN106568201A (en) * 2016-07-30 2017-04-19 广东万和新电气股份有限公司 Antifreezing water heater, control terminal and antifreezing system

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DE2963271D1 (en) 1982-08-19
FR2441799A1 (en) 1980-06-13
EP0011568B1 (en) 1982-06-30
FR2441799B1 (en) 1981-05-08

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