FR2468842A1 - Heat recuperator for open fireplace - has bottom and rear ducts carrying two heat exchanger chambers and flaps for sideways discharge - Google Patents

Heat recuperator for open fireplace - has bottom and rear ducts carrying two heat exchanger chambers and flaps for sideways discharge Download PDF

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Publication number
FR2468842A1
FR2468842A1 FR7927123A FR7927123A FR2468842A1 FR 2468842 A1 FR2468842 A1 FR 2468842A1 FR 7927123 A FR7927123 A FR 7927123A FR 7927123 A FR7927123 A FR 7927123A FR 2468842 A1 FR2468842 A1 FR 2468842A1
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France
Prior art keywords
flaps
heat
heat recovery
chimney
duct
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Granted
Application number
FR7927123A
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French (fr)
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FR2468842B1 (en
Inventor
Jean Mahe
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SODEMIT
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SODEMIT
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Priority to FR7927123A priority Critical patent/FR2468842A1/en
Publication of FR2468842A1 publication Critical patent/FR2468842A1/en
Application granted granted Critical
Publication of FR2468842B1 publication Critical patent/FR2468842B1/fr
Granted legal-status Critical Current

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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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The heat recuperator for an open fireplace consists of a sheet metal structure forming a horizontal duct (2) at low level, connected to a vertical duct (c) behind the fire, terminating in a distributor at the top. This distributor consists of two chambers (3) mounted each side of the vertical duct, sloping at an angle to the vertical, and discharging through an outlet (4) each side. Each chamber incorporates heat exchanger strips, made of e.g. copper. At the top of the vertical duct, between the two chambers are two swinging flaps (8,9) which can be adjusted to control the discharge of flue gases towards the two chambers. All the ducts incorporate stiffening strips.

Description

La présente invention est relative à des perfectionnements aux récupérateurs de chaleur pour cheminées. The present invention relates to improvements to heat recuperators for fireplaces.

En ltétat actuel de la technique, il est connu de disposer le long de ltâtre et du contrecoeur d'une cheminée des conduits ouv-erts à leurs extrémités dont l'une débouche hors de la hotte. In the current state of the art, it is known to have along the hearth and reluctantly a chimney open ducts at their ends, one of which opens out of the hood.

De cette façon, l'air qui emprunte ces conduits est chauffé soit par les braises soit par la flamme du foyer et une partie de 1 1énergie calorifique est ainsi récupérée. In this way, the air which borrows these conduits is heated either by the embers or by the flame of the hearth and part of 1 1 calorific energy is thus recovered.

Un tel récupérateur de chaleur est avantageux mais, cependant, son rendement laisse à désirer. Such a heat recovery unit is advantageous but, however, its performance leaves something to be desired.

De plus, l'installation de tels récupérateurs est difficile dans les cheminées préfabriquées qui sont munies d'un avaloir artificiel. In addition, the installation of such recuperators is difficult in prefabricated chimneys which are provided with an artificial drain.

La présente invention, qui remédie à ces inconvénients, est remarquable en ce que les conduits, s'étendant le long du contrecoeur, aboutissent dans deux caissons latéraux disposés en vis à vis et présentant chacun une face oblique constituant une partie de l'avaloir artificiel usuel, lesdits caissons débouchant,. par un conduit, hors de la hotte de la cheminée. The present invention, which overcomes these drawbacks, is remarkable in that the conduits, extending along the reluctantly, end up in two lateral boxes arranged opposite and each having an oblique face constituting a part of the artificial drain. usual, said open boxes. through a flue, out of the chimney hood.

De cette façon, on réalise un récupérateur dont la mise en place est très aisée puisqu'il comporte solidairement l'avaloir. In this way, a recuperator is produced, the installation of which is very easy since it integrally comprises the drain.

Il faut noter aussi que l'avaloir, outre sa fonction de diriger les fumées vers le conduit d'évacuation, constitue une surface d'échange permettant de récupérer les calories contenues dans lesdites fumées. It should also be noted that the gutter, in addition to its function of directing the fumes towards the exhaust duct, constitutes an exchange surface making it possible to recover the calories contained in said fumes.

L'échange est favorisé par des volets déflecteurs permettant de diriger les fumées vers les surfaces échangeuses des caissons, lesdits volets qui permettent aussi d'obturer le conduit d'évacuation, étant articulés à la partie inférieure de l'avaloir. The exchange is favored by deflector flaps making it possible to direct the fumes to the exchange surfaces of the boxes, said flaps which also make it possible to close the discharge duct, being articulated at the bottom of the outlet.

D'autres caractéristiques apparaîtront mieux par la description qui va suivre faite en se référant aux dessins annexés à titre d'exemple indicatif seulement, sur lesquels:
La figure 1 est une vue en élévation montrant une cheminée pourvue d'un récupérateur conforme à l'invention
La figure 2 est une vue en perspective montrant, à plus grande échelle, le récupérateur de l'invention;
La figure 3 est une vue de détail à plus grande échelle encore.
Other characteristics will appear better from the description which follows, made with reference to the accompanying drawings by way of indicative example only, in which:
Figure 1 is an elevational view showing a chimney provided with a recuperator according to the invention
Figure 2 is a perspective view showing, on a larger scale, the recuperator of the invention;
Figure 3 is a detail view on a still larger scale.

En se reportant aux dessins on voit que, de la façon connue, le récupérateur est constitué par une pièce 1 en forme d'équerre, affectant une section en U et formant,en combinaison avec l'âtre A et le contrecoeur C,un canal 2 ouvert à ses deux extrémités. Referring to the drawings, it can be seen that, in the known manner, the recuperator consists of a piece 1 in the form of a square, affecting a U-shaped section and forming, in combination with the hearth A and the reluctant C, a channel 2 open at both ends.

Selon l'invention, le canal 2 aboutit à deux caissons 3 latéraux pourvus chacun d'un embout tubulaire 4 débouchant par exemple sur le côté de la hotte H de la cheminée. According to the invention, the channel 2 leads to two lateral boxes 3 each provided with a tubular end piece 4 opening for example on the side of the hood H of the chimney.

Chaque caisson-3 présente une face 5 oblique formant, en coopération avec l'autre caisson, l'avaloir usuel. Each box-3 has an oblique face 5 forming, in cooperation with the other box, the usual dump.

L'air chauffé par conduction dans le canal 2 sous l'action des calories dégagées par les braises et les fumées pénètre par un orifice 6 ( figure 2) dans chacun des deux caissons 3 dont la face 5 constitue une surface échangeuse. The air heated by conduction in the channel 2 under the action of the calories released by the embers and the fumes enters through an orifice 6 (FIG. 2) in each of the two boxes 3, the face 5 of which constitutes an exchange surface.

Le rendement de l'échange calorifique entre l'air contenu dans les caissons et les fumées- est favorisé par la présence à l'intérieur desdits caissons d'ailettes 7. The efficiency of the heat exchange between the air contained in the boxes and the fumes is favored by the presence inside said boxes of fins 7.

Selon un mode de réalisation, les ailettes 7 sont réalisées en un matériau bon conducteur de la chaleur (du cuivre par exemple) et elles traversent les faces 5 pour s'étendre à l'extérieur des caissons le long desdites faces comme montré sur la figure 3. According to one embodiment, the fins 7 are made of a material which is a good conductor of heat (copper for example) and they pass through the faces 5 to extend outside the boxes along said faces as shown in the figure 3.

Selon une autre caractéristique de l'invention, l'ob- turateur usuel du conduit d'évacuation E est constitué par deux volets 8 articulés en 9 par un de leurs côtés à la base de l'avaloir formé par les faces 5 des caissons. According to another characteristic of the invention, the usual shutter of the evacuation duct E is constituted by two flaps 8 articulated at 9 by one of their sides at the base of the drain formed by the faces 5 of the boxes.

Selon l'invention, les volets 8 ont pour fonction de diriger les fumées vers les caissons 3 et d'augmenter ainsi le taux de récupération des calories contenues dans celles-ci. According to the invention, the flaps 8 have the function of directing the fumes towards the boxes 3 and thus increasing the rate of recovery of the calories contained in them.

Naturellement, divers moyens peuvent être utilisés pour maintenir les volets selon l'inclinaison requise,l'axe de rotation de ces derniers étant contenu dans un plan passant sensiblement par la base de l'avaloir. Naturally, various means can be used to maintain the flaps at the required inclination, the axis of rotation of the latter being contained in a plane passing substantially through the base of the hood.

Claims (5)

REVENDICATIONS 1-Récupérateur de chaleur pour cheminée du genre de ceux constitués par au moins un conduit s'étendant le long de l'âtre et du contrecoeur caractérisé en ce que le conduit aboutit à sa partie supérieure à deux caissons latéraux présentant chacun une face oblique constituant avec la face correspondante de l'autre caisson l'avaloir usuel, chacun desdits caissons présentant un orifice de sortie débouchant par exemple, sur le côté de la hotte de la cheminée. 1-Heat recovery unit for a chimney of the kind formed by at least one duct extending along the hearth and with reluctance, characterized in that the duct ends at its upper part with two lateral boxes each having an oblique face constituting with the corresponding face of the other box the usual drain, each of said boxes having an outlet opening opening for example, on the side of the hood of the chimney. 2-Récupérateur de chaleur pour cheminée selon la revendication 1, caractérisé en ce que chaque caissons présente intérieurement des ailettes. 2-Heat recovery for chimney according to claim 1, characterized in that each box has internally fins. 3-Récupérateur de chaleur pour cheminée selon la revendication 2, caractérisé en ce que les ailettes, réalisées en un matériau bon conducteur de la chaleur, traversent la face oblique du caisson soumise à l'action des fumées et s'étendent extérieurement le long de ladite face. 3-Heat recovery for chimney according to claim 2, characterized in that the fins, made of a material good conductor of heat, pass through the oblique face of the box subjected to the action of smoke and extend outwardly along said face. 4-Récupérateur de chaleur pour cheminée selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'obturateur du conduit d'évacuation est constitué par deux volets articulés dirigeant les fumées vers les faces de l'avaloir. 4-Heat recovery for chimney according to any one of claims 1 to 3, characterized in that the shutter of the exhaust duct is constituted by two articulated flaps directing the smoke towards the faces of the outlet. 5-Récupérateur de chaleur pour cheminée selon la revendication 4, caractérisé en ce que les volets sont articulés selon un axe situé sensiblement dans un plan passant par la base de l'avaloir. 5-Heat recovery for chimney according to claim 4, characterized in that the flaps are articulated along an axis located substantially in a plane passing through the base of the outlet.
FR7927123A 1979-11-02 1979-11-02 Heat recuperator for open fireplace - has bottom and rear ducts carrying two heat exchanger chambers and flaps for sideways discharge Granted FR2468842A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7927123A FR2468842A1 (en) 1979-11-02 1979-11-02 Heat recuperator for open fireplace - has bottom and rear ducts carrying two heat exchanger chambers and flaps for sideways discharge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7927123A FR2468842A1 (en) 1979-11-02 1979-11-02 Heat recuperator for open fireplace - has bottom and rear ducts carrying two heat exchanger chambers and flaps for sideways discharge

Publications (2)

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FR2468842A1 true FR2468842A1 (en) 1981-05-08
FR2468842B1 FR2468842B1 (en) 1982-08-27

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FR7927123A Granted FR2468842A1 (en) 1979-11-02 1979-11-02 Heat recuperator for open fireplace - has bottom and rear ducts carrying two heat exchanger chambers and flaps for sideways discharge

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2641851A1 (en) * 1989-01-13 1990-07-20 Py Gerard Heat recovery device for a hearth

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2137384A1 (en) * 1971-05-17 1972-12-29 Pote Robert
FR2264251A1 (en) * 1974-03-12 1975-10-10 Cesa Valentin
FR2426214A1 (en) * 1978-05-18 1979-12-14 Boidron Michel HOT AIR GENERATOR INTENDED TO BE MOUNTED IN AN OPEN FIRE CHIMNEY, USING PREFABRICATED ELEMENTS

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2137384A1 (en) * 1971-05-17 1972-12-29 Pote Robert
FR2264251A1 (en) * 1974-03-12 1975-10-10 Cesa Valentin
FR2426214A1 (en) * 1978-05-18 1979-12-14 Boidron Michel HOT AIR GENERATOR INTENDED TO BE MOUNTED IN AN OPEN FIRE CHIMNEY, USING PREFABRICATED ELEMENTS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2641851A1 (en) * 1989-01-13 1990-07-20 Py Gerard Heat recovery device for a hearth

Also Published As

Publication number Publication date
FR2468842B1 (en) 1982-08-27

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