EP0524853B1 - Safety device for abnormal draught detection for gas fired boiler with natural draught flue - Google Patents
Safety device for abnormal draught detection for gas fired boiler with natural draught flue Download PDFInfo
- Publication number
- EP0524853B1 EP0524853B1 EP92401959A EP92401959A EP0524853B1 EP 0524853 B1 EP0524853 B1 EP 0524853B1 EP 92401959 A EP92401959 A EP 92401959A EP 92401959 A EP92401959 A EP 92401959A EP 0524853 B1 EP0524853 B1 EP 0524853B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- boiler
- draught
- detector
- safety device
- temperature
- 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
Links
- 230000002159 abnormal effect Effects 0.000 title abstract 2
- 238000001514 detection method Methods 0.000 title 1
- 239000007789 gas Substances 0.000 claims abstract description 23
- 239000012080 ambient air Substances 0.000 claims abstract description 14
- 239000000567 combustion gas Substances 0.000 claims abstract description 11
- 239000000779 smoke Substances 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 4
- 230000009191 jumping Effects 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 2
- 239000001569 carbon dioxide Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 206010003497 Asphyxia Diseases 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
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
-
- 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
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/14—Fuel valves electromagnetically operated
-
- 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
- F23N5/04—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using bimetallic elements
Definitions
- the draft European standard and the draft French standard concerning this type of appliance impose, between a cut, for anomaly of draft, of the gas supply to a gas boiler and the restoration of this supply, a longer time 10 minutes. This time is used to evacuate the combustion gases in the room. This requires a delay of the detector device used.
- the object of the present invention is to provide a security detector device meeting the above requirement.
- a safety device detecting a draft anomaly for a gas boiler operating on a natural draft flue
- this boiler comprising a heating body, a burner disposed at the base of the heating body, a solenoid valve placed on the gas supply pipe of said burner, a draft hood mounted above the heating body, so as to provide an additional ambient air inlet between the heating body and the draft hood, by which the boiler is connected to the smoke duct of the room in which it is installed, a temperature detector placed outside the boiler and facing said additional ambient air inlet, the detector being thus scanned, when the boiler is operating , by the ambient air which is sucked through the draft hood in the smoke pipe, taking into account the vacuum prevailing in this pipe, to be mixed with the fuel gases ion evacuated, this detector being designed to cut the gas supply to the boiler burner, when the detected temperature exceeds a predetermined limit ⁇ 1 corresponding, for the boiler in question, to a draft anomaly and beyond which a release of combustion gas containing carbon dioxide may occur produce
- the additional ambient air introduced by the draft hood is intended to ensure stable vacuum in the heating body.
- the present temperature detector authorizes the re-establishment of the power supply only after a predetermined time, imposed by standards and allowing a lowering of the temperature corresponding to a chosen deviation.
- Such a temperature detector is a safety device because it shuts down the burner early enough and restarts it after a downtime restoring normal operating conditions of the boiler. This detector avoids having to use an additional and expensive time delay system, which it would be possible to associate with a conventional temperature detector.
- the temperature detector comprises a curved deformable element of the jumping type, capable of passing suddenly from a concave shape to a convex shape, and a contact electrically connected to said solenoid valve, disposed near the element and that the latter operates when its curvature suddenly changes direction under the effect of heat, at a temperature determined for the element considered and equal to said temperature ⁇ 1, the actuated contact acting on the solenoid valve to cut the power supply in gas from the burner, and said deformable element having a hysteresis characteristic such that it remains deformed during all of said safety time t imposed by the standards, time after which it resumes its initial shape, its curvature changing abruptly from sense, it then ceases to actuate said contact and it therefore authorizes the re-supply of gas to the burner, the detected temperature having dropped to the value ⁇ 2.
- the deformable element is a mechanical system with two stable positions, which are an open position or a closed position in the electrical sense of these terms. It has a double effect: a jumping effect which avoids electric arcs on the contacts and a hysteresis effect on the cut-off time, which allows it to fulfill the dual function of a conventional switch and a timer.
- the present security device is therefore both simple and economical.
- the deformable element advantageously has, but without this being limiting, the shape of a cup.
- This cup can be metallic and have, for example, the following dimensions: diameter approximately 13 mm, thickness approximately 2/10 mm, deformation stroke approximately 2 mm.
- it can be designed, again by way of example, for a temperature difference ⁇ 1 - ⁇ 2 of approximately 10 ° C, with an opening temperature ⁇ 1 for example of 46 ° C ⁇ 3 ° C and a closing temperature ⁇ 2 for example of 30 ° C ⁇ 4 ° C, the temperature difference in this case being 10 to 20 ° C for a cut-off time of at least 10 minutes.
- the deformable element can be produced on demand for other cut-off times and other temperature differences, by suitably choosing its thermal inertia characteristics.
- the deformable element and the contact are kept assembled in an electrically and thermally insulating envelope, for example of plastic material such as an epoxy resin, and the assembly is mounted on said draft hood by means of a ring. support and a fixing part linked to this ring, so that the deformable element is at a distance from the boiler which is generally of the order of a few centimeters, suitably 2 cm in the case of the example indicated above, but which will vary depending on the size of the boiler and the characteristics adapted to it of the deformable element.
- the temperature detector further preferably includes a heat sensor, which is a wafer metal placed in front of the deformable element.
- This sensor is advantageously of dimensions slightly larger than those of the deformable element; it transmits to the latter the calories released at said additional ambient air inlet.
Abstract
Description
Le projet de norme européenne et le projet de norme française concernant ce type d'appareil imposent, entre une coupure, pour anomalie de tirage, de l'alimentation en gaz d'une chaudière à gaz et le rétablissement de cette alimentation, un temps supérieur à 10 minutes. Ce temps sert à évacuer les gaz de combustion se trouvant dans la pièce. Ceci impose une temporisation du dispositif détecteur utilisé.The draft European standard and the draft French standard concerning this type of appliance impose, between a cut, for anomaly of draft, of the gas supply to a gas boiler and the restoration of this supply, a longer time 10 minutes. This time is used to evacuate the combustion gases in the room. This requires a delay of the detector device used.
La présente invention a pour but de fournir un dispositif détecteur de sécurité répondant à l'exigence susindiquée.The object of the present invention is to provide a security detector device meeting the above requirement.
A cet effet, elle a pour objet un dispositif de sécurité détectant une anomalie de tirage pour chaudière à gaz fonctionnant sur conduit de fumée à tirage naturel, cette chaudière comprenant un corps de chauffe, un brûleur disposé à la base du corps de chauffe, une électrovanne placée sur la canalisation d'alimentation en gaz dudit brûleur, un coupe-tirage monté au-dessus du corps de chauffe, de façon à ménager une entrée d'air ambiant additionnel entre le corps de chauffe et le coupe-tirage, par lequel la chaudière est raccordée au conduit de fumée du local dans lequel elle est installée, un détecteur de température placé à l'extérieur de la chaudière et en regard de ladite entrée d'air ambiant additionnel, le détecteur étant ainsi balayé, lorsque la chaudière fonctionne, par l'air ambiant qui est aspiré à travers le coupe-tirage dans le conduit de fumée, compte tenu de la dépression régnant dans ce conduit, pour être mélangé aux gaz de combustion évacués, ce détecteur étant conçu pour couper l'alimentation en gaz du brûleur de la chaudière, lorsque la température détectée dépasse une limite prédéterminée θ₁ correspondant, pour la chaudière considérée, à une anomalie de tirage et au-delà de laquelle un dégagement de gaz de combustion contenant du gaz carbonique pourra se produire dans le milieu ambiant, au niveau du coupe-tirage, caractérisé en ce que ledit détecteur est conçu pour rétablir l'alimentation en gaz du brûleur seulement au bout d'un temps t prédéterminé, lorsque la température dans l'environnement du détecteur est tombée à une valeur θ₂ correspondant à un fonctionnement normal de la chaudière et que les gaz de combustion qui se sont éventuellement échappés dans le milieu ambiant ont eu le temps d'être réabsorbés dans le conduit de fumée pour être évacués, afin d'éviter tout risque d'asphyxie par les gaz de combustion dans le local où la chaudière est installée.For this purpose, it relates to a safety device detecting a draft anomaly for a gas boiler operating on a natural draft flue, this boiler comprising a heating body, a burner disposed at the base of the heating body, a solenoid valve placed on the gas supply pipe of said burner, a draft hood mounted above the heating body, so as to provide an additional ambient air inlet between the heating body and the draft hood, by which the boiler is connected to the smoke duct of the room in which it is installed, a temperature detector placed outside the boiler and facing said additional ambient air inlet, the detector being thus scanned, when the boiler is operating , by the ambient air which is sucked through the draft hood in the smoke pipe, taking into account the vacuum prevailing in this pipe, to be mixed with the fuel gases ion evacuated, this detector being designed to cut the gas supply to the boiler burner, when the detected temperature exceeds a predetermined limit θ₁ corresponding, for the boiler in question, to a draft anomaly and beyond which a release of combustion gas containing carbon dioxide may occur produce in the ambient environment, at the draft hood, characterized in that said detector is designed to restore the gas supply to the burner only after a predetermined time t, when the temperature in the environment of the detector is fallen to a value θ₂ corresponding to normal operation of the boiler and that the combustion gases which may have escaped into the ambient environment have had time to be reabsorbed in the flue to be evacuated, in order to avoid any risk of suffocation by combustion gases in the room where the boiler is installed.
De façon connue, l'air ambiant additionnel introduit par le coupe-tirage est destiné à assurer une dépression stable dans le corps de chauffe.In known manner, the additional ambient air introduced by the draft hood is intended to ensure stable vacuum in the heating body.
Plus le tirage est mauvais, plus le débit d'évacuation des gaz du conduit de fumée baisse, moins il y a d'air ambiant additionnel aspiré dans le conduit pour être mélangé aux gaz de combustion et les refroidir et plus la température des gaz d'échappement augmente, jusqu'à devenir celle des gaz de combustion dans le corps de chauffe, lorsqu'il n'y a plus du tout d'aspiration d'air ambiant additionnel et lorsque finalement les gaz de combustion s'échappent dans le local où se trouve la chaudière. Déceler une élévation de température à l'extérieur de la chaudière et en regard de l'entrée d'air ambiant additionnel permet donc de déceler une anomalie de tirage et de couper en conséquence l'alimentation en gaz du brûleur, et cela bien avant que la température ne devienne excessive.The worse the draft, the lower the evacuation rate of the gases from the flue, the less additional ambient air is drawn into the flue to be mixed with the combustion gases and to cool them, and the higher the temperature of the gases d exhaust increases, until it becomes that of the combustion gases in the heating body, when there is no longer any suction of additional ambient air and when finally the combustion gases escape into the room where the boiler is located. Detecting a rise in temperature outside the boiler and facing the additional ambient air inlet therefore makes it possible to detect a draft anomaly and to cut the gas supply to the burner accordingly, and this well before the temperature does not become excessive.
On connaît déjà (FR-2 064 749 et FR-2 425 614) des dispositifs de sécurité permettant de couper l'alimentation en gaz du brûleur dans les conditions évoquées ci-dessus. Toutefois, ces dispositifs de sécurité connus sont conçus pour couper aussi l'alimentation en gaz de la veilleuse. Avec de tels dispositifs de sécurité connus la coupure de l'alimentation en gaz est définitive et il faut obligatoirement une intervention humaine pour rétablir l'alimentation en gaz du brûleur et rallumer la veilleuse et le brûleur.There are already known (FR-2 064 749 and FR-2 425 614) safety devices making it possible to cut the gas supply to the burner under the conditions mentioned above. However, these known safety devices are designed to also cut off the gas supply to the pilot. With such known safety devices, the gas supply is cut off definitively and human intervention is mandatory to restore the gas supply to the burner and relight the pilot and the burner.
Par contre, le présent détecteur de température n'autorise le rétablissement de l'alimentation qu'au bout d'un temps prédéterminé, imposé par les normes et permettant un abaissement de la température correspondant à un écart choisi.On the other hand, the present temperature detector authorizes the re-establishment of the power supply only after a predetermined time, imposed by standards and allowing a lowering of the temperature corresponding to a chosen deviation.
Un tel détecteur de température est un dispositif de sécurité parce qu'il arrête le brûleur suffisamment tôt et qu'il le remet en route après un temps d'arrêt rétablissant des conditions normales de fonctionnement de la chaudière. Ce détecteur évite d'avoir recours à un système de temporisation complémentaire et onéreux, qu'il serait possible d'associer à un détecteur de température classique.Such a temperature detector is a safety device because it shuts down the burner early enough and restarts it after a downtime restoring normal operating conditions of the boiler. This detector avoids having to use an additional and expensive time delay system, which it would be possible to associate with a conventional temperature detector.
Suivant un mode de réalisation préféré, le détecteur de température comprend un élément incurvé déformable du type sautant, susceptible de passer brutalement d'une forme concave à une forme convexe, et un contact relié électriquement à ladite électrovanne, disposé à proximité de l'élément et que celui-ci actionne lorsque sa courbure change brusquement de sens sous l'effet de la chaleur, à une température déterminée pour l'élément considéré et égale à ladite température θ₁, le contact actionné agissant sur l'électrovanne pour couper l'alimentation en gaz du brûleur, et ledit élément déformable présentant une caractéristique d'hystérésis telle qu'il reste déformé pendant tout ledit temps t de sécurité imposé par les normes, temps au bout duquel il reprend sa forme initiale, sa courbure changeant à nouveau brusquement de sens, il cesse alors d'actionner ledit contact et il autorise par conséquent la ré-alimentation en gaz du brûleur, la température détectée étant descendue à la valeur θ₂.According to a preferred embodiment, the temperature detector comprises a curved deformable element of the jumping type, capable of passing suddenly from a concave shape to a convex shape, and a contact electrically connected to said solenoid valve, disposed near the element and that the latter operates when its curvature suddenly changes direction under the effect of heat, at a temperature determined for the element considered and equal to said temperature θ₁, the actuated contact acting on the solenoid valve to cut the power supply in gas from the burner, and said deformable element having a hysteresis characteristic such that it remains deformed during all of said safety time t imposed by the standards, time after which it resumes its initial shape, its curvature changing abruptly from sense, it then ceases to actuate said contact and it therefore authorizes the re-supply of gas to the burner, the detected temperature having dropped to the value θ₂.
L'élément déformable est un système mécanique à deux positions stables, qui sont une position ouverte ou une position fermée au sens électrique de ces termes. Il a un double effet : un effet sautant qui évite les arcs électriques sur les contacts et un effet d'hystérésis sur le temps de coupure, ce qui lui permet de remplir la double fonction d'un interrupteur classique et d'un temporisateur. Le présent dispositif de sécurité est de ce fait à la fois simple et économique.The deformable element is a mechanical system with two stable positions, which are an open position or a closed position in the electrical sense of these terms. It has a double effect: a jumping effect which avoids electric arcs on the contacts and a hysteresis effect on the cut-off time, which allows it to fulfill the dual function of a conventional switch and a timer. The present security device is therefore both simple and economical.
L'élément déformable a avantageusement, mais sans que ceci soit limitatif, la forme d'une coupelle. Cette coupelle peut être métallique et avoir, à titre d'exemple, les dimensions suivantes : diamètre environ 13 mm, épaisseur environ 2/10 mm, course de la déformation environ 2 mm. Pour assurer une temporisation d'au moins 10 mn, elle peut être conçue, toujours à titre d'exemple, pour un écart de température θ₁ - θ₂ d'environ 10°C, avec une température d'ouverture θ₁ par exemple de 46°C ± 3°C et une température de fermeture θ₂ par exemple de 30°C ± 4°C, l'écart de température étant dans ce cas de 10 à 20°C pour un temps de coupure d'au moins 10 mn. Mais, bien entendu, l'élément déformable peut être réalisé à la demande pour d'autres temps de coupure et d'autres écarts de température, en choisissant convenablement ses caractéristiques d'inertie thermique.The deformable element advantageously has, but without this being limiting, the shape of a cup. This cup can be metallic and have, for example, the following dimensions: diameter approximately 13 mm, thickness approximately 2/10 mm, deformation stroke approximately 2 mm. To ensure a time delay of at least 10 minutes, it can be designed, again by way of example, for a temperature difference θ₁ - θ₂ of approximately 10 ° C, with an opening temperature θ₁ for example of 46 ° C ± 3 ° C and a closing temperature θ₂ for example of 30 ° C ± 4 ° C, the temperature difference in this case being 10 to 20 ° C for a cut-off time of at least 10 minutes. However, of course, the deformable element can be produced on demand for other cut-off times and other temperature differences, by suitably choosing its thermal inertia characteristics.
L'élément déformable et le contact sont maintenus assemblés dans une enveloppe électriquement et thermiquement isolante, par exemple en matière plastique telle qu'une résine époxy, et l'ensemble est monté sur ledit coupe-tirage par l'intermédiaire d'une bague-support et d'une pièce de fixation liée à cette bague, de sorte que l'élément déformable soit à une distance de la chaudière qui est généralement de l'ordre de quelques centimètres, opportunément de 2 cm dans le cas de l'exemple indiqué ci-dessus, mais qui variera en fonction de l'importance de la chaudière et des caractréristiques adaptées à celle-ci de l'élément déformable.The deformable element and the contact are kept assembled in an electrically and thermally insulating envelope, for example of plastic material such as an epoxy resin, and the assembly is mounted on said draft hood by means of a ring. support and a fixing part linked to this ring, so that the deformable element is at a distance from the boiler which is generally of the order of a few centimeters, suitably 2 cm in the case of the example indicated above, but which will vary depending on the size of the boiler and the characteristics adapted to it of the deformable element.
Le détecteur de température comprend en outre, de préférence, un capteur de chaleur, qui est une plaquette métallique placée en avant de l'élément déformable. Ce capteur est avantageusement de dimensions un peu supérieures à celles de l'élément déformable; il transmet à ce dernier les calories dégagées au niveau de ladite entrée d'air ambiant additionnel.The temperature detector further preferably includes a heat sensor, which is a wafer metal placed in front of the deformable element. This sensor is advantageously of dimensions slightly larger than those of the deformable element; it transmits to the latter the calories released at said additional ambient air inlet.
Des modifications de détail du domaine des équivalents techniques peuvent être apportées au dispositif de sécurité décrit ci-dessus, sans que l'on sorte pour cela du domaine de l'invention.Modifications of detail in the field of technical equivalents can be made to the security device described above, without thereby departing from the scope of the invention.
Claims (7)
- A safety device detecting a draught irregularity in a gas boiler operating on a natural draught smoke duct, the said boiler incorporating a fire bar, a burner disposed at the bottom of the fire bar, an electrovalve placed on the gas supply duct for the said burner, a draught arrester mounted above the fire bar in such a way as to provide an additional ambient air intake between the fire bar and the draught arrester, by which the boiler is connected to the smoke pipe of the room in which it is installed, a temperature detector positioned outside the boiler and facing the said additional ambient air intake, so that when the boiler is functioning the detector is therefore swept over by the ambient air which is drawn in through the draught arrester in the smoke pipe, taking into account the negative pressure prevailing in this duct, to be mixed with the discharged gases of combustion, the said detector being designed to cut off the gas supply to the burner of the boiler when the temperature detected exceeds a predetermined limit θ₁, which in the case of the boiler in question, corresponds to a draught irregularity and beyond which there could be a release of combustion gas containing gaseous carbon dioxide which would pass into the ambient medium and at the level of the draught arrester, characterised in that the said detector is designed to restore the gas supply to the burner only after a predetermined time t, when the temperature in the environment of the detector has fallen to a level θ₂ corresponding to normal functioning of the boiler and when the combustion gases which may have escaped into the ambient medium have had time to be resorbed into the smoke pipe in order to be evacuated.
- A safety device according to claim 1, characterised in that the temperature detector comprises a deformable inwardly curved element of the jumping type, capable of changing abruptly from a concave form to a convex form and a contact electrically connected to the said electrovalve, disposed close to the element and in that this latter actuates when its curvature suddenly changes direction under the effect of heat, at a temperature specific to the element in question and equal to the said temperature θ₁, the contact actuated acting on the electrovalve to cut off the gas supply to the burner, and the said deformable element having a hysteresis characteristic such that it remains deformed throughout the entire safety time t required by the standards, at the end of which time it resumes its initial shape, its curvature again changing direction suddenly so that it then ceases to actuate the said contact and consequently it allows the gas supply to the burner to be restored, the temperature detected having dropped to the level θ₂.
- A safety device according to claim 2, characterised in that the deformable element is cup-shaped.
- A safety device according to claim 3, characterised in that the cup is metallic.
- A safety device according to any one of claims 2 to 4, characterised in that the deformable element and the contact are kept assembled in an electrically and thermally insulating envelope.
- A safety device according to claim 5, characterised in that the assembly constituted by the deformable element and the contact assembled in an insulating envelope is mounted on the said draught arrester by means of a support ring and a fixing member connected to the said ring.
- A safety device according to any one of claims 2 to 6, characterised in that the temperature detector furthermore comprises a heat sensor which is a small metal plate placed in front of the deformable element.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9109225A FR2679627B1 (en) | 1991-07-22 | 1991-07-22 | SAFETY DEVICE DETECTING A DRAFT ABNORMALITY FOR A GAS BOILER OPERATING ON A NATURAL DRAFT SMOKE DUCT. |
| FR9109225 | 1991-07-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0524853A1 EP0524853A1 (en) | 1993-01-27 |
| EP0524853B1 true EP0524853B1 (en) | 1996-04-03 |
Family
ID=9415374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92401959A Expired - Lifetime EP0524853B1 (en) | 1991-07-22 | 1992-07-08 | Safety device for abnormal draught detection for gas fired boiler with natural draught flue |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0524853B1 (en) |
| AT (1) | ATE136353T1 (en) |
| DE (2) | DE69209580T2 (en) |
| ES (1) | ES2036994T3 (en) |
| FR (1) | FR2679627B1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| FR2064749A6 (en) * | 1969-10-29 | 1971-07-23 | Saunier Duval | |
| FR2118345A5 (en) * | 1970-12-18 | 1972-07-28 | Leblanc Sa | |
| FR2257878A1 (en) * | 1974-01-10 | 1975-08-08 | Saunier Duval | Safety unit for gas flow heater - has hot gas probe connected to gas-controlling temp.-sensitive element via insulated mass |
| FR2425614A1 (en) * | 1978-05-12 | 1979-12-07 | Leblanc Sa E L M | IMPROVEMENTS BROUGHT TO CALORIE GENERATORS USING GAS, ESPECIALLY TO WATER HEATERS |
| US4856982A (en) * | 1987-07-13 | 1989-08-15 | Tjernlund Products, Inc. | Apparatus for exhausting combustion gases from a gas water heater |
-
1991
- 1991-07-22 FR FR9109225A patent/FR2679627B1/en not_active Expired - Fee Related
-
1992
- 1992-07-08 EP EP92401959A patent/EP0524853B1/en not_active Expired - Lifetime
- 1992-07-08 AT AT92401959T patent/ATE136353T1/en not_active IP Right Cessation
- 1992-07-08 DE DE69209580T patent/DE69209580T2/en not_active Expired - Fee Related
- 1992-07-08 ES ES92401959T patent/ES2036994T3/en not_active Expired - Lifetime
- 1992-07-08 DE DE199292401959T patent/DE524853T1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0524853A1 (en) | 1993-01-27 |
| FR2679627B1 (en) | 1997-06-27 |
| ES2036994T3 (en) | 1996-05-16 |
| ES2036994T1 (en) | 1993-06-16 |
| DE524853T1 (en) | 1993-06-09 |
| ATE136353T1 (en) | 1996-04-15 |
| DE69209580D1 (en) | 1996-05-09 |
| DE69209580T2 (en) | 1996-09-19 |
| FR2679627A1 (en) | 1993-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR2640362A1 (en) | MONITORING DEVICE FOR DETECTING AIR LEAKS IN A CLOSED CIRCUIT REFRIGERATION SYSTEM | |
| EP0524853B1 (en) | Safety device for abnormal draught detection for gas fired boiler with natural draught flue | |
| US2913044A (en) | Safety back pressure signal for flues | |
| WO2014128385A2 (en) | Sprinkler comprising a shutoff member held in position by a fusible member with the aid of a moveable bearing means | |
| FR2687212A1 (en) | Improvements to safety devices for gas boilers with a forced air flow or the like | |
| BE1015381A3 (en) | Auto power device for heating. | |
| FR2609162A1 (en) | SUPERHEAT AND INCREASE CONTROL DEVICE FOR A HEATING APPARATUS FOR A FLUID AND APPARATUS EQUIPPED WITH SUCH A DEVICE | |
| EP0011568B1 (en) | Improvement in sealed forced-draught domestic gas apparatuses | |
| EP0559517B1 (en) | Thermostat with automatic reset | |
| EP0185587B1 (en) | Security mechanism reacting to abnormal draught for a gas-heated hot water boiler without a permanent pilot flame | |
| EP0744582B1 (en) | Safety device preventing the return of combustion gases in bath heaters or gas-fired boilers | |
| FR2546293A1 (en) | Detector/measurer of gas flow between two connected enclosures, in particular for smoke and/or ventilation conduits | |
| EP1006319A1 (en) | Condensate removal device | |
| EP0409738B1 (en) | Back draught security device for flue breaker in a boiler with atmospheric burner | |
| EP0128793A1 (en) | Device for connecting a gas-fired condensing water heater to a mechanically controlled ventilation duct | |
| FR2686399A1 (en) | Gas heating device or hearth with direct exhaust and safety valve for the said heating devices | |
| EP1060347B1 (en) | Integrated security system for smoke extractor | |
| FR2512933A1 (en) | SECURITY DEVICE FOR A MOBILE HEATING APPARATUS SUCH AS AN OIL STOVE | |
| EP0029769B1 (en) | Carburettor comprising a choke valve | |
| FR3109632A1 (en) | Improved pressure sensing device | |
| FR2566513A1 (en) | Safety device for gas appliance for producing hot water without a permanent pilot light | |
| BE367092A (en) | ||
| FR2504648A1 (en) | SAFETY DEVICE FOR GAS HEATING APPARATUS AND APPLICATION THEREOF | |
| FR2546609A1 (en) | Device for connecting a gas-operated condensation apparatus to a controlled mechanical ventilation circuit | |
| FR2651305A1 (en) | SEPARATE TYPE AIR CONDITIONER. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI NL PT SE |
|
| ITCL | It: translation for ep claims filed |
Representative=s name: MARCHI E MITTLER |
|
| TCNL | Nl: translation of patent claims filed | ||
| 17P | Request for examination filed |
Effective date: 19930218 |
|
| GBC | Gb: translation of claims filed (gb section 78(7)/1977) | ||
| DET | De: translation of patent claims | ||
| 17Q | First examination report despatched |
Effective date: 19941010 |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI NL PT SE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19960403 Ref country code: DK Effective date: 19960403 |
|
| REF | Corresponds to: |
Ref document number: 136353 Country of ref document: AT Date of ref document: 19960415 Kind code of ref document: T |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: E. BLUM & CO. PATENTANWAELTE |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19960409 |
|
| REF | Corresponds to: |
Ref document number: 69209580 Country of ref document: DE Date of ref document: 19960509 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2036994 Country of ref document: ES Kind code of ref document: T3 |
|
| ITF | It: translation for a ep patent filed |
Owner name: MARCHI & MITTLER S.R.L. |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19960703 |
|
| SC4A | Pt: translation is available |
Free format text: 960410 AVAILABILITY OF NATIONAL TRANSLATION |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20060526 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20060612 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20060619 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: PT Payment date: 20060703 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20060714 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20060719 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20060728 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20060731 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20060822 Year of fee payment: 15 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PFA Owner name: FRISQUET S.A. Free format text: FRISQUET S.A.#20 RUE BRANLY, Z.I. DE BEAUVAL#F-77100 MEAUX (FR) -TRANSFER TO- FRISQUET S.A.#20 RUE BRANLY, Z.I. DE BEAUVAL#F-77100 MEAUX (FR) |
|
| REG | Reference to a national code |
Ref country code: PT Ref legal event code: MM4A Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 20080108 |
|
| BERE | Be: lapsed |
Owner name: S.A. *FRISQUET Effective date: 20070731 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20070708 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20080201 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080201 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070731 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080201 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070731 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080108 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070708 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070708 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070731 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20070709 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20080730 Year of fee payment: 17 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070709 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070708 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20100331 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090731 |