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FR2472721A1 - CALORIE RECOVERY DEVICE IN OPEN HOUSE FIREPLACES - Google Patents

CALORIE RECOVERY DEVICE IN OPEN HOUSE FIREPLACES Download PDF

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Publication number
FR2472721A1
FR2472721A1 FR7929619A FR7929619A FR2472721A1 FR 2472721 A1 FR2472721 A1 FR 2472721A1 FR 7929619 A FR7929619 A FR 7929619A FR 7929619 A FR7929619 A FR 7929619A FR 2472721 A1 FR2472721 A1 FR 2472721A1
Authority
FR
France
Prior art keywords
pipes
air
tubes
plate
space
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
FR7929619A
Other languages
French (fr)
Other versions
FR2472721B1 (en
Inventor
Henri Nisole
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.)
GRANIFEU SA
Original Assignee
GRANIFEU 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 GRANIFEU SA filed Critical GRANIFEU SA
Priority to FR7929619A priority Critical patent/FR2472721A1/en
Priority to EP80401668A priority patent/EP0029783B1/en
Priority to AT80401668T priority patent/ATE12306T1/en
Priority to DE8080401668T priority patent/DE3070342D1/en
Publication of FR2472721A1 publication Critical patent/FR2472721A1/en
Application granted granted Critical
Publication of FR2472721B1 publication Critical patent/FR2472721B1/fr
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24BDOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00Stoves or ranges
    • F24B1/18Stoves with open fires, e.g. fireplaces
    • F24B1/185Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion
    • F24B1/188Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by use of heat exchange means , e.g. using a particular heat exchange medium, e.g. oil, gas  
    • F24B1/1885Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by use of heat exchange means , e.g. using a particular heat exchange medium, e.g. oil, gas   the heat exchange medium being air only
    • F24B1/1886Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by use of heat exchange means , e.g. using a particular heat exchange medium, e.g. oil, gas   the heat exchange medium being air only the heat exchanger comprising only tubular air ducts within the fire

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Fuel Combustion (AREA)
  • Incineration Of Waste (AREA)
  • Gasification And Melting Of Waste (AREA)

Abstract

1. An arrangement for recovering the heat in open fireplaces comprising a space (9) having possibly one wall serving as a hearth plate (1) and one vertical wall serving as a back plate (4), over which air to be heated circulates, comprising also, within the space (9), a plurality of generally upwards directed and continuously rising tubes (14), said tubes (14) opening at the bottom transversely of the back plate (4), and, at the top, opening into the flue (8), characterized in that the top of said space (9) lets fireplace volume communicate directly with the flue (8), in that lower inlet openings of the tubes (14) are at the level of wood and/or burning embers, and in that said tubes (14) have a restricted cross-section area, of about 7 cm**2.

Description

La présente invention concerne un dispositif de chauffage à airThe present invention relates to an air heater

chaud associé à une cheminée à foyer ouvert.  hot associated with an open fireplace.

Des dispositifs de récupération de calories dans les cheminées  Calorie recovery devices in fireplaces

à foyer ouvert pour chauffer de l'eau ou de l'air sont déjà connus.  open fire to heat water or air are already known.

A titre d'exemples, parmi les dispositifs connus de chauffage d'air, on peut citer ceux qui sont décrits dans les brevets français publiés sous les NI: 2 270 527, 2 273 238 et 2 341 821. Ces dispositifs se composent tous d'une enceinte qui entoure le foyer et dans laquelle l'air à chauffer circule, la paroi de l'enceinte adjacente au foyer étant chauffée par les flammes et la fumée et servant à chauffer l'air  By way of examples, among the known air-heating devices, mention may be made of those which are described in the French patents published under the NI: 2 270 527, 2 273 238 and 2 341 821. These devices all consist of an enclosure which surrounds the hearth and in which the air to be heated circulates, the wall of the enclosure adjacent to the hearth being heated by flames and smoke and serving to heat the air

circulant dans l'enceinte. Or il est connu que la température des flam-  circulating in the enclosure. However, it is known that the temperature of flames

mes décroît très rapidement en s'éloignant de la surface du combustible et que la température de la fumée décroît également rapidement en se mélangeant avec l'air en excès passant dans la cheminée sans participer à la combustion. En particulier, le haut de la plaque de fond d'une  it decays very rapidly away from the fuel surface and the temperature of the smoke also decreases rapidly by mixing with the excess air passing through the chimney without participating in the combustion. In particular, the top of the bottom plate of a

cheminée ne permet pas de réchauffer l'air au-delà de 600 environ.  fireplace does not allow to heat the air beyond about 600.

Un objet de la présente invention consiste à prévoir un disposi-  An object of the present invention is to provide a device

tif permettant d'obtenir à la sortie d'air chaud des températures nette-  tif to obtain hot air temperatures at the outlet of hot air

ment plus élevées.higher.

Suivant une caractéristique de l'invention, il est prévu un dispo-  According to one characteristic of the invention, provision is made

sitif comprenant une enceinte ayant une face servant de plaque foyère et une face servant de plaque de fond, à travers laquelle circule de l'air à réchauffer, le dispositif comportant encore, à l'intérieur de l'enceinte, une pluralité de tuyaux débouchant en bas, à travers la face de fond, à la hauteur du bois et/ou des braises enflammés et,  device comprising an enclosure having a face serving as a fired plate and a face serving as bottom plate, through which air to be heated is circulated, the device further comprising, inside the enclosure, a plurality of pipes leading to bottom, across the bottom face, at the height of the wood and / or burning embers and,

en haut, dans le conduit de fumée.at the top, in the flue.

Suivant une autre caractéristique, les tuyaux ont une section  According to another characteristic, the pipes have a section

relativement faible pour ne pas laisser passer trop d'air ne partici-  relatively small so as not to let too much air in.

pant pas à la combustion.not stick to burning.

Suivant une autre caractéristique, les départs inférieurs des  According to another characteristic, the lower departures of

tuyaux sont répartis en hauteur.pipes are distributed in height.

Suivant une autre caractéristique, des moyens d'occultation sont prévus pour fermer sélectivement les départs de certains tuyaux à la demande. Les caractéristiques de l'invention mentionnées ci-dessus, ainsi  According to another characteristic, concealment means are provided for selectively closing the outlets of certain pipes on demand. The features of the invention mentioned above, as well as

que d'autres, apparaîtront plus clairement à la lecture de la descrip-  others will become clearer from the description of the

tion d'un exemple de réalisation, ladite description étant faite en  an example embodiment, said description being made in

relation avec les dessins joints, parmi lesquels: la Fig. 1 est une vue en coupe d'une cheminée à foyer ouvert équipée d'un dispositif de chauffage d'air suivant l'invention, la Fig. 2 est une-vue de face de la cheminée de la Fig. 1, la Fig. 3 est une vue en coupe du dispositif de chauffage suivant la ligne III-III, et la Fig. 4 est dne vue de face d'un dispositif de sélection de  relationship with the accompanying drawings, in which: FIG. 1 is a sectional view of an open hearth chimney equipped with an air heater according to the invention, FIG. 2 is a front view of the chimney of FIG. 1, FIG. 3 is a sectional view of the heater along line III-III, and FIG. 4 is seen from the front of a selection device of

tuyaux à ouvrir.pipes to open.

La cheminée à Boyer ouvert de la Fig. 1 comprend classiquement une plaque foyère 1 sur laquelle reposent des chenets 2 supportant des buches enflammées 3, un contre-feu 4, des jambages 5, un linteau  The open Boyer chimney of FIG. 1 conventionally comprises a furnace plate 1 on which firedogs 2 supporting inflamed logs 3, a counter-fire 4, jambs 5, a lintel

6, une hotte 7 et un conduit de fumée 8.  6, a hood 7 and a flue 8.

Le contre-feu 4 est, en fait, la paroi avant d'une enceinte 9 qui a la forme d'un caisson à section verticale en forme de L, la base du L s'étendant sous au moins une partie de la plaque foyère 1 et la jambe du L montant jusqu'à la hotte 7. L'enceinte 9 comporte, en bas, une prise d'air 10 laissant entrer de l'air frais, pris à l'extérieur ou dans la pièce contenant la cheminée et, en haut, des sorties d'air  The counter-fire 4 is, in fact, the front wall of an enclosure 9 which is in the form of a L-shaped vertical section box, the base of the L extending under at least a portion of the furnace plate. 1 and the leg of the L upright to the hood 7. The enclosure 9 has, at the bottom, an air intake 10 letting in fresh air, taken outside or in the room containing the chimney and , at the top, air outlets

11 délivrant l'air chauffé soit dans la même pièce, par exemple à tra-  11 delivering the heated air either in the same room, for example through

vers la hotte, soit dans une autre pièce. A cet effet, dans l'exemple décrit, la plaque supérieure 12 de l'enceinte 9 est percée de deux ouvertures 11 auxquelles sont raccordées des manches 13 débouchant  to the hood, either in another room. For this purpose, in the example described, the upper plate 12 of the enclosure 9 is pierced with two openings 11 to which are connected sleeves 13 opening

sur les côtés de la hotte 7.on the sides of the hood 7.

Par ailleurs, dans la jambe du L de l'enceinte 9, sont prévus des tuyaux 14, dont l'orientation générale est verticale, dont les extrémités inférieures sont soudées en bas de la plaque contre-feu 4 et dont les extrémités supérieures sont soudées à la plaque 12. Les plaques 4 et 12 sont percées en face des tuyaux 14. Les tuyaux ont un  Furthermore, in the leg of the L of the enclosure 9, there are provided pipes 14, whose general orientation is vertical, the lower ends of which are welded at the bottom of the counter-fire plate 4 and whose upper ends are welded. 12. The plates 4 and 12 are pierced in front of the pipes 14. The pipes have a

diamètre de l'ordre de 3 cm, par exemple.  diameter of about 3 cm, for example.

Les tuyaux 14 forment des sortes de dérivations à section faible par rapport au foyer principal. Il en résulte tout d'abord que les gaz combustibles, en feu, émis par le bois, peuvent également monter en brûlant dans les tuyaux 14. C'est ce qui se passe en réalité comme le montre les flammes 15 s'engouffrant dans les ouvertures à la base de la  The pipes 14 form a kind of branches with a small section compared to the main focus. As a result, firstly, the burning combustible gases emitted by the wood can also rise by burning in the pipes 14. This is actually the case as the flames 15 engulfing the openings at the base of the

plaque 4. Comme la quantité d'air admise dans chaque tuyau 14 est limi-  plate 4. Since the amount of air admitted into each pipe 14 is limited

tée par la section étroite du tuyau, les gaz chauds montant dans chaque tuyau ne sont pas brassés avec un excès d'air froid ne participant pas à la combustion. Donc la température dans les tuyaux 14 est, pour la même altitude, plus forte que sur la plaque 4. Bien entendu, la plaque 4 transfert de la chaleur du foyer vers l'intérieur de l'enceinte 9,  Through the narrow section of the pipe, the hot gases rising in each pipe are not mixed with an excess of cold air not participating in the combustion. Therefore, the temperature in the pipes 14 is, for the same altitude, higher than on the plate 4. Of course, the plate 4 transfers heat from the hearth towards the inside of the enclosure 9,

comme dans les dispositifs connus.as in the known devices.

Par ailleurs, le rapport de la surface d'un tuyau à son volume est maximal si bien que le transfert de la chaleur se fait vers l'air qui passe dans l'enceinte 9, avec une nettement meilleure efficacité que dans un dispositif ne comportant comme surface de transfert que  Furthermore, the ratio of the surface of a pipe to its volume is maximum so that the heat transfer is to the air passing through the chamber 9, with a significantly better efficiency than in a device having no as a transfer surface that

la plaque 4 et la partie se trouvant sous la plaque foyère.  the plate 4 and the part under the hearth plate.

L'expérience prouve que, parmi les tuyaux 14, ceux qui conduisent le mieux les flammes, sont ceux dont l'entrée se trouvent au niveau de la naissance des flammes du foyer. C'est pourquoi, comme le montre  Experience shows that among the pipes 14, those which lead the flames the best, are those whose entrance are at the level of the birth of the flames of the hearth. That's why, as shown

la Fig. 2, on prévoit des entrées de tuyaux 14 à des hauteurs différen-  FIG. 2, pipe entries 14 at different heights are provided.

tes et, comme le montre la Fig. 4, des plaques de fermeture coulissante 16, percées d'ouvertures 17 convenablement disposées, permettant de sélectionner les tuyaux 14 à ouvrir. Ces moyens permettent en fonction  and as shown in Fig. 4, sliding closing plates 16, pierced with openings 17 suitably arranged, for selecting the pipes 14 to open. These means make it possible

de la hauteur du tas de b ches en flamme d'obtenir le meilleur rende-  the height of the bunch of flames to obtain the best return

ment. La section de l'enceinte peut être relativement plate, tout en  is lying. The section of the speaker can be relatively flat, while

permettant d'obtenir un débit d'air chaud suffisant.  to obtain a sufficient hot air flow.

Dans sa partie supérieure, on peut prévoir, comme à la Fig. 1, pour l'enceinte 9, un retour vers le linteau 6 de manière à créer un  In its upper part, it can be provided, as in FIG. 1, for the speaker 9, a return to the lintel 6 so as to create a

étranglement qui améliore le tirage de la cheminée.  throttling that improves the draft of the chimney.

Claims (4)

REVENDICATIONS 1) Dispositif de récupération de calories dans les cheminées à foyer ouvert comprenant une enceinte ayant une face servant de plaque  1) Calorie recovery device in open fireplaces comprising an enclosure having a face serving as a plate foyère et une face servant de plaque de fond, à travers laquelle circu-  furnace and a face serving as a base plate, through which le de l'air à réchauffer, caractérisé en ce qu'à l'intérieur de l'en-  the air to be heated, characterized in that inside the ceinte, une pluralité de tuyaux débouchant en bas, à travers la face de fond, à la hauteur du bois et/ou des braises enflammés et, en haut,  a plurality of pipes opening downwards through the bottom face, at the height of the wood and / or burning embers, and at the top, dans le conduit de fumée.in the flue. 2) Dispositif suivant la revendication 1, caractérisé en ce que les tuyaux ont une section relativement faible pour ne pas laisser  2) Device according to claim 1, characterized in that the pipes have a relatively small section to not leave passer trop d'air ne participant pas à la combustion.  pass too much air not participating in the combustion. 3) Dispositif suivant les revendications 1 à 2, caractérisé en ce  3) Device according to claims 1 to 2, characterized in that que les départs inférieurs des tuyaux sont répartis en hauteur.  that the lower parts of the pipes are distributed in height. 4) Dispositif suivant les revendications 1 à 3, caractérisé en ce  4) Device according to claims 1 to 3, characterized in that que des moyens d'occultation sont prévus pour fermer sélectivement les  that occultation means are provided for selectively closing the départs de certains tuyaux à la demande.  departures of some pipes on demand.
FR7929619A 1979-11-27 1979-11-27 CALORIE RECOVERY DEVICE IN OPEN HOUSE FIREPLACES Granted FR2472721A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7929619A FR2472721A1 (en) 1979-11-27 1979-11-27 CALORIE RECOVERY DEVICE IN OPEN HOUSE FIREPLACES
EP80401668A EP0029783B1 (en) 1979-11-27 1980-11-20 Device for recovering calorific values in chimneys of open fires
AT80401668T ATE12306T1 (en) 1979-11-27 1980-11-20 HEAT RECOVERY DEVICE FOR OPEN FIREPLACES.
DE8080401668T DE3070342D1 (en) 1979-11-27 1980-11-20 Device for recovering calorific values in chimneys of open fires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7929619A FR2472721A1 (en) 1979-11-27 1979-11-27 CALORIE RECOVERY DEVICE IN OPEN HOUSE FIREPLACES

Publications (2)

Publication Number Publication Date
FR2472721A1 true FR2472721A1 (en) 1981-07-03
FR2472721B1 FR2472721B1 (en) 1984-06-22

Family

ID=9232307

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7929619A Granted FR2472721A1 (en) 1979-11-27 1979-11-27 CALORIE RECOVERY DEVICE IN OPEN HOUSE FIREPLACES

Country Status (4)

Country Link
EP (1) EP0029783B1 (en)
AT (1) ATE12306T1 (en)
DE (1) DE3070342D1 (en)
FR (1) FR2472721A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2510725A1 (en) * 1981-02-26 1983-02-04 Vergnes Jacques Heat recuperator for fireplace - has vertical smoke tube heat exchanger and water tube fire-bars

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8215086U1 (en) * 1981-06-15 1983-06-16 Aeberhard, Hans, 8902 Urdorf OPEN CHEMINEE WITH FIREPLACE AND A FIREPLACE MOUNTAINING THERE
GB2213577A (en) * 1987-12-11 1989-08-16 Beaumont John L Ltd Convection space heating arrangement for a flame effect gas fire
FR2660052B1 (en) * 1990-03-22 1996-07-12 David Jean Pierre PULSE AIR CHIMNEY BOILER AND THREE - WAY DRAWING USING A PARABOLIC FIREPLACE ROOM.
FR3012576B1 (en) * 2013-10-31 2019-03-29 Jean-Michel Delage BOILER-TYPE HEATING DEVICE AND METHOD OF OPERATION

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB116367A (en) * 1917-06-14 1918-06-13 William Wallace Wiltshire Improvements in Domestic Fire Attachments for Heating Air.
US2143772A (en) * 1938-05-17 1939-01-10 Hannula Gust Heating unit for fireplaces
GB732992A (en) * 1952-10-17 1955-07-06 Frantisek Hlavka Improved heating stove
US2832332A (en) * 1953-12-22 1958-04-29 Hugo C Johnson Combination fireplace and furnace
FR2294403A1 (en) * 1974-12-12 1976-07-09 Lambert Jean Multiple heat exchanger appts. for wood fire - has ducts between hearth and hood with underfloor entry and discharge
FR2327492A2 (en) * 1975-10-07 1977-05-06 Julie Clement Solid fuel open fire - has insert in chimney to provide additional convective heating of room air by natural convection

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB116367A (en) * 1917-06-14 1918-06-13 William Wallace Wiltshire Improvements in Domestic Fire Attachments for Heating Air.
US2143772A (en) * 1938-05-17 1939-01-10 Hannula Gust Heating unit for fireplaces
GB732992A (en) * 1952-10-17 1955-07-06 Frantisek Hlavka Improved heating stove
US2832332A (en) * 1953-12-22 1958-04-29 Hugo C Johnson Combination fireplace and furnace
FR2294403A1 (en) * 1974-12-12 1976-07-09 Lambert Jean Multiple heat exchanger appts. for wood fire - has ducts between hearth and hood with underfloor entry and discharge
FR2327492A2 (en) * 1975-10-07 1977-05-06 Julie Clement Solid fuel open fire - has insert in chimney to provide additional convective heating of room air by natural convection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2510725A1 (en) * 1981-02-26 1983-02-04 Vergnes Jacques Heat recuperator for fireplace - has vertical smoke tube heat exchanger and water tube fire-bars

Also Published As

Publication number Publication date
EP0029783B1 (en) 1985-03-20
ATE12306T1 (en) 1985-04-15
DE3070342D1 (en) 1985-04-25
FR2472721B1 (en) 1984-06-22
EP0029783A1 (en) 1981-06-03

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