EP0043318B1 - Thermostatic control device for the temperature of a fireplace water heater - Google Patents

Thermostatic control device for the temperature of a fireplace water heater Download PDF

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Publication number
EP0043318B1
EP0043318B1 EP81401020A EP81401020A EP0043318B1 EP 0043318 B1 EP0043318 B1 EP 0043318B1 EP 81401020 A EP81401020 A EP 81401020A EP 81401020 A EP81401020 A EP 81401020A EP 0043318 B1 EP0043318 B1 EP 0043318B1
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EP
European Patent Office
Prior art keywords
plate
temperature
partition
opening
heat exchanger
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EP81401020A
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German (de)
French (fr)
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EP0043318A1 (en
Inventor
Marcel Humbert
Dominique Helleux
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Individual
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Individual
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Priority to AT81401020T priority Critical patent/ATE13221T1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/185—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion
    • F24B1/187—Condition responsive controls for regulating combustion 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/183—Stoves with open fires, e.g. fireplaces with additional provisions for heating water

Definitions

  • the present invention relates to a device for thermostatic regulation of the temperature of an apparatus for producing hot water associated with an open indoor fireplace.
  • Hot water production devices connected to a central heating system in open fireplaces are already known.
  • the known devices for producing hot water mention may be made of those described in documents FR-A-2 321 092 and FR-A-2 333 207. These devices all consist of a box filled with water which is placed under and behind the hearth and in which the water is heated by the heat of the hearth.
  • the heat output of a heat exchanger is a function of several parameters, such as quantity and quality of wood used, chimney draft, ventilation rate at the hearth , and way of driving the fire.
  • the chimneys with partitions, as described above make it possible to improve the draft and the ventilation rate, the management of the fire continues to require constant surveillance on the part of the users.
  • An object of the present invention is to provide a water heat exchanger device for ensuring a more complete recovery of the calorific value of the fuel.
  • Another object of the invention consists in providing a device making it possible to obtain an improvement in the heating of the water and a constant temperature at the outlet of hot water from the heat exchanger.
  • the temperature-sensitive means are elements which expand and which are mounted in a cavity of the box, the free end of said elements being connected to the plate by means of a mechanical lever system.
  • the open hearth in FIG. 1 conventionally comprises a hearth plate 1 on which there are ignited logs 2, a counter-fire 3, legs 4, a lintel 5, a hood 6 and a smoke duct 7.
  • a partition 8 In front of the counter-fire 3, a partition 8 has been mounted which occupies the entire width of the chimney between the jambs 4.
  • the distance between the partition 8 and the bottom of the chimney can be 15 to 20 cm.
  • the compartment thus delimited between the partition 8 and the bottom of the chimney communicates in its upper part with the smoke duct 7.
  • an opening 9 is provided which descends to the hearth plate 1.
  • the opening 9 is, preferably if the chimney is symmetrical, also symmetrical between the legs 4 and its width may be less than the distance between the legs.
  • the hearth plate 1 is the upper face of the base of a box 14 with an L-shaped section.
  • the front face of the rising part of the box, corresponding to the leg of the L constitutes the counter plate. fire 3.
  • the box 14 is filled with water and comprises an inlet pipe 15 for cold water, provided at the base of 14, and an outlet pipe 16 for hot water, provided in the upper part of the leg of the box.
  • the pipes 15 and 16 are connected to a set of central heating radiators or to a sanitary water tank, or to devices of this kind, not shown.
  • the circulation of water in the installation can be forced by a conventional pump or accelerator, not shown.
  • the upper plate 17 of the box 14, at the top of the leg, is provided with a cavity 18 descending inside the box.
  • the cavity 18 is preferably constituted by a tube closed at its lower end and open upwards. The edges of the opening of the tube 18 are welded to the edges of the hole drilled in the plate 17 for the passage of the tube.
  • three elements 19 are superimposed which have a relatively large coefficient of expansion.
  • the upper element 19 supports the bottom of a rod 20 which is connected to a lever arm 21 by a horizontal axis 22.
  • One end of the lever arm 21 is pivotally mounted around an axis 23 carried by the two legs d 'a bracket 24 which is fixed, by appropriate means, to a wall of the chimney.
  • the elements 19 When the water in the box is cold, the elements 19 are retracted and the axis 22 is at its lowest point, like the axis 25. So the rod 26 and the plate 10 are in the low position.
  • the elements 19 expand, the axis 22 rises as well.
  • axis 25, and plate 10 goes up.
  • the relative distances between the axes 22 and 23, on the one hand, and the axes 25 and 23, on the other hand, are chosen so as to obtain the appropriate amplification coefficient between the expansion of the elements 19 and the plate stroke 10.
  • the vertical front or counter-fire face 3 of the box has ribs 27 which improve the heat exchange of the smoke gases and flames with the box.
  • the base of the ribs 27 is cut at 45 °. Tubes open at the base and at the top of the vertical part of the box can be provided to allow flames and hot gases to pass and thus improve the heat exchange surface.
  • deflectors can also be provided to improve heat exchange.
  • a second simple prismatic box 28 which serves as an air heat exchanger.
  • the box 28 comprises an air inlet pipe or inlet port 29 and an air outlet pipe or outlet port 30.
  • the pipe 29 is preferably connected to the outside, by a suitable sheath , to get fresh air.
  • Tubing 30 opens into the room where the chimney is installed.
  • the temperature of the water in the exchanger will rise quickly. From 45 ° and gradually up to 90 °, the expansion of the thermostatic elements 19 will come into action, exerting a push on the lever arm 21, which will raise the movable plate 10, which will reach its highest point when the temperature water will be 90 °.
  • the combustion will decrease in intensity and the fire will take on an appearance similar to that of a traditional chimney operated by natural depression.
  • a chimney has been shown in which, in front of the partition 8, there is a passage 31 towards the smoke duct 7. This passage can be obstructed by a flap 32, the position of which can be controlled by a chain 33.
  • the shutter 32 is closed and the chimney operates as indicated above.
  • the plate 10 is lowered completely to the hearth plate 1 and the flap 32 is opened.
  • One can then make a fire as in a conventional chimney.

Abstract

1. A thermostatic control device for the temperature of a water heater (4) associated with a home open fireplace, the water heater being constituted by a water heat exchanger having an L-shaped cross-section, the foot of which is under the hearth plate (1) and the leg of which serves as a back plate (3), a partition (8) being provided in front of the back of the fineplace between the jambs thereof, said partition (8) having at its lower part, an opening (9) extending downwards to the hearth plate (1), the opening (9) being more or less obturated by a vertically movable plate (10), characterized in that it is constituted by temperature responsive means (19) which are mounted in the apparatus (14), said temperature responsive means (19) being associated with control means (21) controlling the vertical position of the plate (10) in the opening of the partition (8), for moving the movable plate (10) up when the temperature increases and down when the temperature decreases.

Description

La présente invention concerne un dispositif de régulation thermostatique de la température d'un appareil de production d'eau chaude associé à une cheminée d'intérieur à foyer ouvert.The present invention relates to a device for thermostatic regulation of the temperature of an apparatus for producing hot water associated with an open indoor fireplace.

Des dispositifs de production d'eau chaude reliés à un système de chauffage central dans des cheminées à foyer ouvert sont déjà connus. A titre d'exemples, parmi les dispositifs connus de production d'eau chaude, on peut citer ceux qui sont décrits dans les documents FR-A-2 321 092 et FR-A-2 333 207. Ces dispositifs se composent tous d'un caisson rempli d'eau qui est placé sous et derrière le foyer et dans lequel l'eau- est réchauffée par la chaleur du foyer.Hot water production devices connected to a central heating system in open fireplaces are already known. By way of examples, among the known devices for producing hot water, mention may be made of those described in documents FR-A-2 321 092 and FR-A-2 333 207. These devices all consist of a box filled with water which is placed under and behind the hearth and in which the water is heated by the heat of the hearth.

D'autre part, d'après le document FR-A-2 294400, il est connu que l'on peut améliorer le rendement énergétique d'un foyer en prévoyant une cloison devant le fond de la cheminée entre les jambages, l'espace compris entre le fond et la cloison communiquant avec le conduit de fumée, la cloison présentant en face du feu une ouverture derrière laquelle est prévue une plaque mobile obturant plus ou moins l'ouverture afin d'améliorer le tirage.On the other hand, from document FR-A-2 294400, it is known that the energy efficiency of a fireplace can be improved by providing a partition in front of the bottom of the chimney between the jambs, the space between the bottom and the partition communicating with the smoke duct, the partition having in front of the fire an opening behind which is provided a movable plate closing more or less the opening in order to improve the draft.

Par ailleurs, d'une manière générale, dans les cheminées actuelles, le rendement calorifique d'un échangeur de chaleur est fonction de plusieurs paramètres, tels que quantité et qualité du bois utilisé, tirage de la cheminée, taux de ventilation au niveau du foyer, et façon de conduire le feu. En pratique, si les cheminées à cloison, telles que décrites ci-dessus, permettent d'améliorer le tirage et le taux de ventilation, la conduite du feu continue à nécessiter une surveillance constante de la part des utilisateurs.In addition, in general, in current fireplaces, the heat output of a heat exchanger is a function of several parameters, such as quantity and quality of wood used, chimney draft, ventilation rate at the hearth , and way of driving the fire. In practice, if the chimneys with partitions, as described above, make it possible to improve the draft and the ventilation rate, the management of the fire continues to require constant surveillance on the part of the users.

Un objet de la présente invention consiste à prévoir un dispositif à échangeur de chaleur à eau permettant d'assurer une récupération plus com- pléte du pouvoir calorifique du combustible.An object of the present invention is to provide a water heat exchanger device for ensuring a more complete recovery of the calorific value of the fuel.

Un autre objet de l'invention consiste à prévoir un dispositif permettant d'obtenir une amélioration du chauffage de l'eau et une température constante à la sortie d'eau chaude de l'échangeur de chaleur.Another object of the invention consists in providing a device making it possible to obtain an improvement in the heating of the water and a constant temperature at the outlet of hot water from the heat exchanger.

Suivant une caractéristique de l'invention, il est prévu, dans une cheminée à foyer ouvert comportant un dispositif de production d'eau chaude formé d'un échangeur de chaleur à eau à section verticale en forme de L dont la base est sous la plaque foyère et le jambage sert de contrefeu, une cloison étant prévue devant le fond de la cheminée avec une ouverture en face du feu et plus ou moins obturée par une plaque, des moyens sensibles à la température qui sont installés dans le dispositif, lesdits moyens sensibles à la température étant associés à des moyens de commande de la position de la plaque dans l'ouverture de la cloison.According to a characteristic of the invention, there is provision, in an open hearth fireplace comprising a device for producing hot water formed by a water heat exchanger with vertical section in L-shape whose base is under the plate hearth and jamb serves as a firewall, a partition being provided in front of the bottom of the chimney with an opening opposite the fire and more or less closed by a plate, temperature-sensitive means which are installed in the device, said sensitive means at the temperature being associated with means for controlling the position of the plate in the opening of the partition.

Suivant une autre caractéristique, les moyens sensibles à la température sont des éléments qui se dilatent et qui sont montés dans une cavité du caisson, l'extrémité libre desdits éléments étant reliée à la plaque par l'intermédiaire d'un système mécanique à levier.According to another characteristic, the temperature-sensitive means are elements which expand and which are mounted in a cavity of the box, the free end of said elements being connected to the plate by means of a mechanical lever system.

Suivant une autre caractéristique, un échangeur de chaleur à air est monté derrière la cloison au-dessus de l'échangeur de chaleur à eau avec une ouïe latérale captant de l'air frais du dehors et une ouïe de sortie d'air réchauffé.According to another characteristic, an air heat exchanger is mounted behind the partition above the water heat exchanger with a lateral outlet catching fresh air from the outside and a heated air outlet opening.

Les caractéristiques de l'invention mentionnées ci-dessus, ainsi que d'autres, apparaîtront plus clairement à la lecture de la description d'exemples de réalisation, ladite description étant faite en relation avec les dessins joints, parmi lesquels:

  • la Fig. 1 est une vue en coupe verticale d'une cheminée à foyer ouvert équipée d'un échangeur de chaleur d'eau, suivant l'invention,
  • la Fig. 2 est une vue en perspective de l'échangeur de chaleur à eau de la Fig. 1, surmonté d'un échangeur de chaleur à air, et
  • la Fig. 3 est une vue en coupe verticale d'une cheminée semblable à celle de la Fig. 1, mais équipée d'un double avaloir.
The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the description of exemplary embodiments, said description being made in relation to the accompanying drawings, among which:
  • Fig. 1 is a view in vertical section of an open hearth chimney fitted with a water heat exchanger, according to the invention,
  • Fig. 2 is a perspective view of the water heat exchanger of FIG. 1, surmounted by an air heat exchanger, and
  • Fig. 3 is a vertical sectional view of a chimney similar to that of FIG. 1, but fitted with a double drain.

La cheminée à foyer ouvert de la Fig. 1 comprend classiquement une plaque foyère 1 sur laquelle sa trouvent des bûches enflammées 2, un contre-feu 3, des jambages 4, un linteau 5, une hotte 6 et un conduit de fumée 7.The open hearth in FIG. 1 conventionally comprises a hearth plate 1 on which there are ignited logs 2, a counter-fire 3, legs 4, a lintel 5, a hood 6 and a smoke duct 7.

Devant le contre-feu 3, a été montée une cloison 8 qui occupe toute la largeur de la cheminée entre les jambages 4. La distance entre la cloison 8 et le fond de la cheminée peut être de 15 à 20 cm. Le compartiment ainsi délimité entre la cloison 8 et le fond de la cheminée communique dans sa partie supérieure avec le conduit de fumée 7. Dans Ja partie inférieure de la cloison 8, est prévue une ouverture 9 qui descend jusqu'à la plaque foyère 1. L'ouverture 9 est, de préférence si la cheminée est symétrique, également symétrique entre les jambages 4 et sa largeur peut être inférieure à la distance entres les jambages.In front of the counter-fire 3, a partition 8 has been mounted which occupies the entire width of the chimney between the jambs 4. The distance between the partition 8 and the bottom of the chimney can be 15 to 20 cm. The compartment thus delimited between the partition 8 and the bottom of the chimney communicates in its upper part with the smoke duct 7. In the lower part of the partition 8, an opening 9 is provided which descends to the hearth plate 1. The opening 9 is, preferably if the chimney is symmetrical, also symmetrical between the legs 4 and its width may be less than the distance between the legs.

Derrière la cloison 8, est montée une plaque mobile 10 dont les dimensions sont légèrement plus grandes que celles de l'ouverture 8. La plaque 10 peut être translatée verticalement entre une position basse où elle obture complètement l'ouverture 9 et une position haute où elle dégage entièrement celle-ci. En pratique, la plaque mobile 10 est suspendue à une chaîne 11 qui passe sur une poulie 12 fixée à la cloison 8. A l'autre extrémité de la chaîne 12, est suspendu un contre-poids 13 qui compense le poids de la plaque.Behind the partition 8 is mounted a movable plate 10 whose dimensions are slightly larger than those of the opening 8. The plate 10 can be vertically translated between a low position where it completely closes the opening 9 and a high position where it completely releases it. In practice, the movable plate 10 is suspended from a chain 11 which passes over a pulley 12 fixed to the partition 8. At the other end of the chain 12, a counterweight 13 is suspended which compensates for the weight of the plate.

Il est connu que, quand on descend la plaque 10, c'est à dire quand on réduit la section de passage de l'air derrière les bûches enflammées 2, on améliore le tirage ce qui augmente la puissance du feu. A l'inverse en remontant la plaque 10, on réduit la puissance du feu. Bien entendu, il y a, pour la plaque 10, une limite inférieure à ne pas dépasser si l'on ne veut pas supprimer totalement le tirage.It is known that, when the plate 10 is lowered, that is to say when the air passage section behind the ignited logs 2 is reduced, the draft is improved, which increases the power of the fire. Conversely, by raising the plate 10, the power of the fire is reduced. Of course, there is, for the plate 10, a lower limit not to be exceeded if one does not want to completely remove the print.

Dans l'exemple de réalisation montré, la plaque foyère 1 est la face supérieure de la base d'un caisson 14 à section en L. La face avant de la partie montante du caisson, correspondant au jambage du L constitue la plaque de contre-feu 3. Le caisson 14 est rempli d'eau et comporte une tubulure d'entrée 15 d'eau froide, prévue à la base de 14, et une tubulure de sortie 16 d'eau chaude, prévue dans la partie haute du jambage du caisson. Les tubulures 15 et 16 sont reliées à un ensemble de radiateurs de chauffage central ou à un ballon d'eau sanitaire, ou à des appareils de ce genre, non montrés. Bien entendu, la circulation de l'eau de l'installation peut être forcée par une pompe ou un accélérateur classique, non montré.In the embodiment shown, the hearth plate 1 is the upper face of the base of a box 14 with an L-shaped section. The front face of the rising part of the box, corresponding to the leg of the L constitutes the counter plate. fire 3. The box 14 is filled with water and comprises an inlet pipe 15 for cold water, provided at the base of 14, and an outlet pipe 16 for hot water, provided in the upper part of the leg of the box. The pipes 15 and 16 are connected to a set of central heating radiators or to a sanitary water tank, or to devices of this kind, not shown. Of course, the circulation of water in the installation can be forced by a conventional pump or accelerator, not shown.

La plaque supérieure 17 du caisson 14, en haut du jambage, est pourvue d'une cavité 18 descendant à l'intérieur du caisson. La cavité 18 est de préférence constituée par un tube fermé à son extrémité inférieure et ouvert vers le haut. Les bords de l'ouverture du tube 18 sont soudés aux bords du troue percé dans la plaque 17 pour le passage du tube. Dans la cavité 18, sont superposés trois éléments 19 qui ont un coefficient de dilatation relativement important. L'élément 19 supérieur supporte le bas d'une tige 20 qui est reliée à une bras de levier 21 par un axe horizontal 22. Une extrémité du bras de levier 21 est monté pivotant autour d'un axe 23 porté par les deux pattes d'un étrier 24 qui est fixé, par des moyens appropriés, à une paroi de la cheminée. A l'extrémité libre du bras de levier 21, est fixée par un axe 25, une tige verticale 26 dont l'autre extrémité est fixée à la plaque 10. Bien entendu, on peut utiliser, au lieu de trois éléments 19, un seul ou plusieurs éléments sensibles à la température selon le réglage désiré et les types d'éléments. De plus, on peut également supprimer le contre-poids 13, si nécessaire, en laissant les éléments supporter le poids de la plaque, par l'intermédiaire du levier.The upper plate 17 of the box 14, at the top of the leg, is provided with a cavity 18 descending inside the box. The cavity 18 is preferably constituted by a tube closed at its lower end and open upwards. The edges of the opening of the tube 18 are welded to the edges of the hole drilled in the plate 17 for the passage of the tube. In the cavity 18, three elements 19 are superimposed which have a relatively large coefficient of expansion. The upper element 19 supports the bottom of a rod 20 which is connected to a lever arm 21 by a horizontal axis 22. One end of the lever arm 21 is pivotally mounted around an axis 23 carried by the two legs d 'a bracket 24 which is fixed, by appropriate means, to a wall of the chimney. At the free end of the lever arm 21, is fixed by an axis 25, a vertical rod 26 whose other end is fixed to the plate 10. Of course, one can use, instead of three elements 19 or more temperature sensitive elements depending on the desired setting and types of elements. In addition, the counterweight 13 can also be eliminated, if necessary, by letting the elements support the weight of the plate, by means of the lever.

Quand l'eau du caisson est froide, les éléments 19 sont rétractés et l'axe 22 est à son point le plus bas, comme l'axe 25. Donc la tige 26 et la plaque 10 sont en position basse. Quand la température de l'eau monte autour de la cavité 18, les éléments 19 se dilatent, l'axe 22 monte ainsi que. l'axe 25, et la plaque 10 monte. En pratique, les distances relatives entre les axes 22 et 23, d'une part, et les axes 25 et 23, d'autre part, sont choisies de manière à obtenir le coefficient d'amplification approprié entre la dilatation des éléments 19 et la course de la plaque 10.When the water in the box is cold, the elements 19 are retracted and the axis 22 is at its lowest point, like the axis 25. So the rod 26 and the plate 10 are in the low position. When the water temperature rises around the cavity 18, the elements 19 expand, the axis 22 rises as well. axis 25, and plate 10 goes up. In practice, the relative distances between the axes 22 and 23, on the one hand, and the axes 25 and 23, on the other hand, are chosen so as to obtain the appropriate amplification coefficient between the expansion of the elements 19 and the plate stroke 10.

On notera que, dans l'exemple de réalisation montré à la Fig. 2, la face avant verticale ou contre-feu 3 du caisson comporte des nervures 27 qui améliorent les échanges thermiques des gaz de fumée et des flammes avec le caisson. La base des nervures 27 est coupée à 45°. Des tubes ouverts à la base et en haut de la partie verticale du caisson peuvent être prévus pour laisser passer les flammes et les gaz chauds et améliorer ainsi la surface d'échange de chaleur. Devant les nervures, on peut également prévoir des déflecteurs pour améliorer les échanges de chaleur.It will be noted that, in the exemplary embodiment shown in FIG. 2, the vertical front or counter-fire face 3 of the box has ribs 27 which improve the heat exchange of the smoke gases and flames with the box. The base of the ribs 27 is cut at 45 °. Tubes open at the base and at the top of the vertical part of the box can be provided to allow flames and hot gases to pass and thus improve the heat exchange surface. In front of the ribs, deflectors can also be provided to improve heat exchange.

Au-dessus du caisson 14, est monté contre le fond de la cheminée, un second caisson prismatique simple 28 qui sert d'échangeur de chaleur à air. Le caisson 28 comporte une tubulure d'entrée d'air ou ouïe d'entrée 29 et une tubulure de sortie d'air ou ouïe de sortie 30. La tubulure 29 est, de préférence, reliée à l'extérieur, par une gaine appropriée, pour y puiser de l'air frais. La tubulure 30 débouche dans la pièce où est installée la cheminée.Above the box 14, is mounted against the bottom of the chimney, a second simple prismatic box 28 which serves as an air heat exchanger. The box 28 comprises an air inlet pipe or inlet port 29 and an air outlet pipe or outlet port 30. The pipe 29 is preferably connected to the outside, by a suitable sheath , to get fresh air. Tubing 30 opens into the room where the chimney is installed.

L'ouverture minimale initiale sous la plaque 10, étant d'environ 15 cm au-dessus du plan horizontal de la plaque foyère 1 de la cheminée, l'allumage initial sera facilité et le feu dont la combustion sera très intense à ce moment là, dégagera des flammes et des fumées de température très élevée qui seront concentrées vers les nervures 27 de l'échangeur. La température de l'eau contenue dans l'échangeur s'élévera rapidement. A partir de 45° et progressivement jusqu'à 90°, la dilatation des éléments thermostatiques 19 entrera en action, exerçant une poussée sur le bras de levier 21, lequel soulèvera la plaque mobile 10, qui atteindra son point le plus haut lorsque la température de l'eau sera de 90°. Au fur et à mesure de l'élévation de la plaque mobile 10, la combustion diminuera en intensité et le feu prendra une apparence analogue à celui d'une cheminée traditionnelle à fonctionnement par dépression naturelle. Lorsque l'eau chaude aura effectué son circuit, soit par thermosiphon, soit par circulation accélérée et échangé sa température dans les différents radiateurs qu'elle aura traversé, elle refroidira en retour l'échangeur. Les éléments thermostatiques 19 se rétracteront sous la force exercée par la plaque mobile. En pratique, le poids du contre-poids 13 n'équilibre pas complètement celui de la plaque 10 et il y a donc appui du bras de levier 21 sur les éléments 19. La plaque 10 redescendra progressivement, intensifiant à nouveau la combustion du bois disposé dans le foyer, et ainsi de suite.The initial minimal opening under the plate 10, being approximately 15 cm above the horizontal plane of the hearth plate 1 of the chimney, the initial ignition will be facilitated and the fire whose combustion will be very intense at this time. , will release flames and fumes of very high temperature which will be concentrated towards the ribs 27 of the exchanger. The temperature of the water in the exchanger will rise quickly. From 45 ° and gradually up to 90 °, the expansion of the thermostatic elements 19 will come into action, exerting a push on the lever arm 21, which will raise the movable plate 10, which will reach its highest point when the temperature water will be 90 °. As the movable plate 10 rises, the combustion will decrease in intensity and the fire will take on an appearance similar to that of a traditional chimney operated by natural depression. When the hot water has made its circuit, either by thermosiphon, or by accelerated circulation and exchanged its temperature in the various radiators that it will have crossed, it will cool the exchanger back. The thermostatic elements 19 will retract under the force exerted by the movable plate. In practice, the weight of the counterweight 13 does not completely balance that of the plate 10 and there is therefore support of the lever arm 21 on the elements 19. The plate 10 will gradually descend, again intensifying the combustion of the wood disposed in the foyer, and so on.

Comme le fonctionnement d'une cheminée à foyer ouvert met en oeuvre des quantités d'air importantes (3 à 5 fois le volume de la pièce à l'heure) et comme les habitations actuelles sont relativement étanches, il est indispensable de prévoir un apport d'air complémentaire. Par l'ouïe 29, cet air est pris à l'extérieur, est réchauffé dans l'échangeur 28, puis expulsé chaud dans la pièce. Il apparaît donc que l'on évite de refroidir la pièce ce qui se produirait si on amenait directement de l'extérieur l'air nécessaire à la combustion.As the operation of an open fireplace uses large amounts of air (3 to 5 times the volume of the room per hour) and as current homes are relatively airtight, it is essential to provide an intake additional air. By air 29, this air is taken outside, is heated in the exchanger 28, then expelled hot into the room. It therefore appears that one avoids cooling the room which would occur if one brought directly from outside the air necessary for combustion.

A la Fig. 3, on a montré une cheminée dans laquelle devant la cloison 8, il est prévu un passage 31 vers le conduit de fumée 7. Ce passage peut être obstrué par un volet 32 dont on peut commander la position par une chaîne 33. En période d'hiver, le volet 32 est fermé et la cheminée fonctionne comme on l'a indiqué ci-dessus. En période d'été, on descend la plaque 10 complètement jusqu'à la plaque foyère 1 et on ouvre le volet 32. On peut alors faire du feu comme dans une cheminée classique.In Fig. 3, a chimney has been shown in which, in front of the partition 8, there is a passage 31 towards the smoke duct 7. This passage can be obstructed by a flap 32, the position of which can be controlled by a chain 33. In winter, the shutter 32 is closed and the chimney operates as indicated above. In the summer period, the plate 10 is lowered completely to the hearth plate 1 and the flap 32 is opened. One can then make a fire as in a conventional chimney.

Claims (3)

1. A thermostatic control device for the temperature of a water heater (4) associated with a home open fireplace, the water heater being constituted by a water heat exchanger having an L-shaped cross-section, the foot of which is under the hearth plate (1) and the leg of which serves as a back plate (3), a partition (8) being provided in front of the back of the fireplace between the jambs thereof, said partition (8) having at its lower part, an opening (9) extending downwards to the hearth plate (1), the opening (9) being more or less obturated by a vertically movable plate (10), characterized in that it is constituted by temperature responsive means (19) which are mounted in the apparatus (14), said temperature responsive means (19) being associated with control means (21) controlling the vertical position of the plate (10) in the opening of the partition (8), for moving the movable plate (10) up when the temperature increases and down when the temperature decreases.
2. A device according to claim 1, characterized in that the temperature responsive means (19) are elements which swell and are mounted in a recess (18) in the tank (14), the free end of said elements being connected to the plate (10) through a lever mechanical system.
3. A device according to claim 1 or 2, characterized in that an air heat exchanger (28) is mounted behind the partition (8) and above the water heat exchanger (14), said air heat exchanger (28) having a lateral port (29) for picking up air from outside and an exit port (30) for the heated air.
EP81401020A 1980-06-26 1981-06-25 Thermostatic control device for the temperature of a fireplace water heater Expired EP0043318B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81401020T ATE13221T1 (en) 1980-06-26 1981-06-25 THERMOSTATIC TEMPERATURE REGULATION DEVICE OF WATER HEATING FOR OPEN FIREPLACE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8014689 1980-06-26
FR8014689A FR2485696A1 (en) 1980-06-26 1980-06-26 THERMOSTATIC TEMPERATURE CONTROL DEVICE OF HOT WATER PRODUCTION APPARATUS

Publications (2)

Publication Number Publication Date
EP0043318A1 EP0043318A1 (en) 1982-01-06
EP0043318B1 true EP0043318B1 (en) 1985-05-08

Family

ID=9243746

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401020A Expired EP0043318B1 (en) 1980-06-26 1981-06-25 Thermostatic control device for the temperature of a fireplace water heater

Country Status (4)

Country Link
EP (1) EP0043318B1 (en)
AT (1) ATE13221T1 (en)
DE (1) DE3170391D1 (en)
FR (1) FR2485696A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE54989B1 (en) * 1983-11-18 1990-04-11 Sullivan Richard J Domestic back boiler
GB2162306A (en) * 1984-07-19 1986-01-29 Newman Frederick George Domestic fireplace
IE55529B1 (en) * 1984-09-13 1990-10-10 Sullivan Richard J Domestic back boiler
IE860031L (en) * 1986-01-07 1987-07-07 Martin Neligan Heat exchange apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2321092A1 (en) * 1975-08-14 1977-03-11 Martin Jacques Combined wood burning and electrically heated hearth - has heating elements embedded in walls and water coils embedded in chimney blocks
FR2333207A1 (en) * 1975-11-28 1977-06-24 Aubert Yvon Central heating system absorbing heat from hearth - has hearth mounted in fireplace and through which water flows to and from system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB590221A (en) * 1945-03-13 1947-07-11 Henrique Emil Mendelssohn Improvements in or relating to glass building bricks or blocks and structures formedtherefrom
FR2294400A1 (en) * 1974-12-10 1976-07-09 Rech Tech Appliquees Open domestic chimney draft control plate - is fitted in chimney behind the fire and slidable vertically
IT1077220B (en) * 1977-06-03 1985-05-04 Giacconi Silvio HEAT EXCHANGER STRUCTURE PARTICULARLY FOR FIREPLACES AND SIMILAR

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2321092A1 (en) * 1975-08-14 1977-03-11 Martin Jacques Combined wood burning and electrically heated hearth - has heating elements embedded in walls and water coils embedded in chimney blocks
FR2333207A1 (en) * 1975-11-28 1977-06-24 Aubert Yvon Central heating system absorbing heat from hearth - has hearth mounted in fireplace and through which water flows to and from system

Also Published As

Publication number Publication date
DE3170391D1 (en) 1985-06-13
FR2485696A1 (en) 1981-12-31
ATE13221T1 (en) 1985-05-15
FR2485696B1 (en) 1982-11-05
EP0043318A1 (en) 1982-01-06

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