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EP3693666B1 - Wood-burning stove with offset heat exchanger - Google Patents

Wood-burning stove with offset heat exchanger Download PDF

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Publication number
EP3693666B1
EP3693666B1 EP20155957.2A EP20155957A EP3693666B1 EP 3693666 B1 EP3693666 B1 EP 3693666B1 EP 20155957 A EP20155957 A EP 20155957A EP 3693666 B1 EP3693666 B1 EP 3693666B1
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EP
European Patent Office
Prior art keywords
combustion
stove
box
air
combustion chamber
Prior art date
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Application number
EP20155957.2A
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German (de)
French (fr)
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EP3693666A1 (en
Inventor
Yann DENANCE
Kevin PAULIN
Elodie FAIVRE
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Inovalp
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Inovalp
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Classifications

    • 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
    • F24B5/00—Combustion-air or flue-gas circulation in or around stoves or ranges
    • F24B5/02—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves
    • 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
    • F24B1/02—Closed stoves
    • F24B1/024—Closed stoves for pulverulent fuels
    • 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
    • F24B7/00—Stoves, ranges or flue-gas ducts, with additional provisions for convection heating 
    • F24B7/04—Stoves, ranges or flue-gas ducts, with additional provisions for convection heating  with internal air ducts
    • F24B7/045—Stoves, ranges or flue-gas ducts, with additional provisions for convection heating  with internal air ducts with forced circulation
    • 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
    • F24B1/188—Stoves 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  
    • F24B1/1885—Stoves 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
    • F24B1/1888—Stoves 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 with forced circulation

Definitions

  • the invention relates to the technical field of stoves, in particular pellet stoves. More specifically, the invention relates to stoves of the fireplace-stove type where it is possible to observe the fire as in a fireplace.
  • the power supply module comprises walls delimiting a solid fuel storage space (p.3, 1.28-30).
  • the combustion module and the supply module are separate modules, without being wrapped in a common casing.
  • a stove of the state of the art comprises a dedicated protective wall panel, distinct from a covering wall, and arranged between the combustion module and the walls delimiting the storage space.
  • the wall panel can be mounted on the front wall of the storage space (p.13, 1.14-15; fig.4 ).
  • the wall panel can form the front wall of the storage space (p.13, 1.10-12; fig.5 ).
  • the protective wall panel is designed to protect the wall but also the storage space, and therefore the fuel, from the heat radiated by the combustion module via its rear face (p.3, 1.20-24).
  • Such a stove of the state of the art is not entirely satisfactory insofar as the protective wall panel can turn out to be bulky and complicates the design of the stove, in particular when the wall panel forms the front wall of the stove. storage space.
  • the bulky appearance of the protective wall panel can also weigh down the aesthetics depending on the nature of the room to be heated.
  • the document WO 2016/207395 A1 discloses a stove with a supply duct for a solid fuel stove, adapted to be installed between a solid fuel supply module and a combustion module of said solid fuel.
  • the sheath comprises a supply duct for supplying the combustion module with solid fuel, an air intake duct for supplying the combustion module with air, and a smoke evacuation duct for discharging to the combustion module. feeding the fumes emitted by the combustion. At least a part of the air intake duct is interposed between the supply duct and the smoke evacuation duct.
  • the fuel tank has its own walls, distinct from the casing cladding walls.
  • a stove according to the invention also makes it possible to overcome a protective wall panel forming a wall of the fuel tank, which simplifies the design of the stove.
  • the part of the supply tube and the part of the exhaust tube are concealed in the spacing area.
  • Such a stove according to the invention makes it possible to deport the fuel tank, the evacuation duct and the heat exchanger outside the combustion chamber, which allows an aesthetic break making it possible to focus on the flame.
  • the convection function is separated from the radiation function.
  • the stove according to the invention may comprise one or more of the following characteristics.
  • the first opening is located above the combustion enclosure; the second opening is located below the combustion enclosure; and the circulation means are arranged to draw ambient air from the first opening to the second opening via the heat exchanger.
  • an advantage procured by such forced convection is to obtain a destratification of the ambient air by moving the ambient air from an upper part to a lower part.
  • the stove comprises a deflector arranged to deflect the ambient air leaving the second opening downwards.
  • an advantage obtained is to improve the destratification of the ambient air.
  • an advantage obtained is to purify the combustion chamber by concealing the technical parts (combustive air supply duct, smoke evacuation duct) in the frame, in order to focus on the flame.
  • the part of the combustion air supply tube is concealed in the spacing zone.
  • the part of the combustion air supply tube extends in the space zone below the part of the supply tube and above the part of the evacuation tube.
  • an advantage obtained is to avoid heating the fuel present in the supply tube by thermal radiation emitted by the evacuation tube, by interposing the combustion air supply tube.
  • an advantage obtained is to heat the combustion air present in the combustion air supply tube by thermal radiation emitted by the evacuation tube, which increases the efficiency.
  • the fixing means comprise the supply tube, the evacuation tube and the combustion air supply tube.
  • an advantage obtained is to obtain satisfactory mechanical strength of the enclosure without requiring additional dedicated fixing means.
  • the combustion air supply duct and the exhaust duct are coaxial.
  • an advantage obtained is to reduce the size of the stove.
  • the casing has a mass adapted to support the combustion enclosure; the combustion chamber and the box each comprising a base; and the fixing means are arranged to suspend the base of the combustion enclosure above the base of the box.
  • an advantage obtained is to suspend the enclosure and to dispense with feet to support it.
  • the box extends along a vertical axis
  • the supply tube extends along an oblique direction with respect to the vertical axis so as to supply the burner with fuel by gravity.
  • an advantage obtained is to obtain easy guidance of the fuel towards the burner.
  • the box comprises at least one side hatch.
  • an advantage obtained is to facilitate the maintenance of the stove.
  • the box comprises a base, intended to rest on a floor of the room to be heated, and made of an elastic material.
  • an advantage obtained is to reduce any vibrations caused by technical elements present in the box, for example the motors of the suction means.
  • the casing cladding walls are made of steel.
  • the room to be heated comprises a wall, and the box is affixed against the wall.
  • the box advantageously comprises a frame 2, on which the covering walls 9 are mounted.
  • the frame 2 of the box is advantageously made of a metallic material.
  • the frame 2 of the box may comprise a set of uprights and crosspieces arranged to support the stove 1.
  • the box advantageously has a mass adapted to support the enclosure 3 of combustion.
  • the mass of the frame 2 is advantageously adapted so that the box is self-supporting.
  • the box comprises a base 20, intended to rest on a floor of the room to be heated.
  • the base 20 of the box is advantageously made of an elastic material, for example a rubber.
  • the base 20 of the box may include pads made of the elastic material.
  • the box preferably extends along a vertical axis.
  • the box advantageously comprises at least one side hatch 21.
  • the covering walls 9 of the box are advantageously made of steel.
  • the box and the combustion chamber 3 do not have a common casing.
  • combustion air A can be taken directly from the room to be heated so as to circulate directly in the combustion air A supply tube 8.
  • Part 80 of combustion air supply tube 8 A advantageously extends in spacing zone ZE below part 50 of supply tube 5 and above part 60 of exhaust tube 6.
  • the supply duct C a of combustion air A and the exhaust duct C e are advantageously coaxial. More specifically, the supply duct C a of combustion air A and the exhaust duct C e advantageously comprise coaxial upper parts.
  • the combustion enclosure 3 comprises a base 31, preferably suspended, that is to say extending above the floor of the room to be heated.
  • the combustion enclosure 3 comprises at least one window 32 arranged to observe the flame.
  • the stove 1 advantageously comprises a first layer of thermal insulation mounted outside the combustion chamber 3, arranged so as to reduce the flow of thermal radiation transmitted by the rear face (i.e. oriented towards the spacing zone ZE ) of the combustion enclosure 3.
  • the stove 1 advantageously comprises a second layer of thermal insulation mounted inside the combustion enclosure 3, and arranged so as to reduce the flow of thermal radiation transmitted by the rear face (i.e. oriented towards the spacing zone ZE) of the combustion enclosure 3.
  • the fuel tank 4 C is fixed to the frame 2 of the casing.
  • the fuel tank 4 has walls 40 forming an enclosure adapted to contain solid fuels C, preferably wood pellets.
  • Stove 1 may include a layer of thermal insulation or an air gap arranged around fuel tank 4 C.
  • the fixing means advantageously comprise the supply tube 5, the evacuation tube 6 and the supply tube 8 of combustion air A. More specifically, the fixing means advantageously comprise the part 50 of the supply tube 5, the part 60 of the evacuation tube and the part 80 of the supply tube 8 of combustion air A, arranged to ensure the mechanical connection between the frame 2 of the box and the enclosure 3 of combustion.
  • the fixing means are advantageously arranged to suspend the base 31 of the combustion enclosure 3 above the base 20 of the box.
  • the supply tube 5 advantageously extends in a direction oblique to the vertical axis of the casing so as to supply the burner 30 with fuel C by gravity.
  • the supply tube 5 is advantageously connected to the fuel tank 4 C by means of an endless screw 51 making it possible to meter the supply of fuel C.
  • the heat exchanger 7 can be a tube exchanger 71.
  • the combustion fumes F circulate in the heat exchanger 7 so as to exchange calories with the ambient air of the room to be heated circulating in the receiving volume.
  • the evacuation tube 6 advantageously comprises a first portion arranged to evacuate the combustion fumes F from the combustion chamber 3 towards the heat exchanger 7.
  • the evacuation tube 6 advantageously comprises a second portion arranged to receive the combustion fumes F exiting from the heat exchanger 7 in order to evacuate them towards the evacuation duct C e .
  • the circulation means are advantageously arranged to circulate the ambient air from the first opening to the second opening 90 via the heat exchanger 7.
  • the first opening is advantageously located above the combustion chamber 3.
  • the term "above” means in orthogonal projection on the covering wall 9 where the first opening is formed.
  • the second opening 90 is advantageously located below the enclosure 3 of combustion.
  • the term “below” means in orthogonal projection on the covering wall 9 where the second opening 90 is formed.
  • the circulation means are advantageously arranged to suck the ambient air from the first opening towards the second opening 90 via the heat exchanger 7.
  • the stove 1 advantageously comprises a deflector arranged to deflect the ambient air leaving the second opening towards the down.
  • the first opening is located below the combustion enclosure 3 and the second opening 90 is located above the combustion enclosure 3.
  • the circulation means then allow natural convection of the ambient air from the first opening to the second opening 90 via the heat exchanger 7.
  • the stove 1 comprises an additional heat exchanger, arranged in the combustion chamber 3, upstream of the second opening, to transfer the thermal energy of the combustion fumes F to the ambient air exiting from the heat exchanger 7.
  • the stove 1 comprises a connecting tube, arranged to connect the ambient air leaving the heat exchanger 7 to the additional heat exchanger.
  • the connecting tube makes it possible to connect the reception volume, delimited by the casing, to the enclosure 3 of combustion.
  • the circulation means are arranged to circulate the ambient air of the room to be heated in the reception volume via the heat exchanger 7.
  • the circulation means are also arranged to circulate the ambient air leaving the heat exchanger 7 to the additional heat exchanger via the connection pipe.
  • the circulation means are arranged to circulate the ambient air in the reception volume via the heat exchanger 7.
  • the room to be heated has a wall, and the box is advantageously affixed against the wall.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Fuel Combustion (AREA)
  • Air Supply (AREA)

Description

Domaine techniqueTechnical area

L'invention se rapporte au domaine technique des poêles, notamment des poêles à granulés. Plus précisément, l'invention concerne les poêles de type poêle-cheminée où il est possible d'observer le feu comme dans une cheminée.The invention relates to the technical field of stoves, in particular pellet stoves. More specifically, the invention relates to stoves of the fireplace-stove type where it is possible to observe the fire as in a fireplace.

État de l'artState of the art

Un poêle connu de l'état de la technique, notamment du document FR 3 038 034 , comporte :

  • un module de combustion, renfermant le foyer d'un poêle ;
  • un module d'alimentation, permettant d'alimenter le foyer en combustible solide.
A stove known from the state of the art, in particular from the document FR 3 038 034 , includes:
  • a combustion module, containing the hearth of a stove;
  • a power supply module, making it possible to supply the hearth with solid fuel.

Le module d'alimentation comporte des parois délimitant un espace de stockage de combustible solide (p.3, 1.28-30). Le module de combustion et le module d'alimentation sont des modules séparés, sans être enveloppés d'un habillage commun. En outre, un tel poêle de l'état de la technique comporte un panneau mural de protection dédié, distinct d'une paroi d'habillage, et agencé entre le module de combustion et les parois délimitant l'espace de stockage. Le panneau mural peut être monté sur la paroi avant de l'espace de stockage (p.13, 1.14-15 ; fig.4). Selon une variante, le panneau mural peut former la paroi avant de l'espace de stockage (p.13, 1.10-12 ; fig.5). Le panneau mural de protection est conçu pour protéger le mur mais également l'espace de stockage, et donc le combustible, de la chaleur rayonnée par le module de combustion via sa face arrière (p.3, 1.20-24).The power supply module comprises walls delimiting a solid fuel storage space (p.3, 1.28-30). The combustion module and the supply module are separate modules, without being wrapped in a common casing. In addition, such a stove of the state of the art comprises a dedicated protective wall panel, distinct from a covering wall, and arranged between the combustion module and the walls delimiting the storage space. The wall panel can be mounted on the front wall of the storage space (p.13, 1.14-15; fig.4 ). Alternatively, the wall panel can form the front wall of the storage space (p.13, 1.10-12; fig.5 ). The protective wall panel is designed to protect the wall but also the storage space, and therefore the fuel, from the heat radiated by the combustion module via its rear face (p.3, 1.20-24).

Un tel poêle de l'état de la technique n'est pas entièrement satisfaisant dans la mesure où le panneau mural de protection peut s'avérer volumineux et complexifie la conception du poêle, en particulier lorsque le panneau mural forme la paroi avant de l'espace de stockage. L'aspect volumineux du panneau mural de protection peut également alourdir l'esthétisme selon la nature de la pièce à chauffer.Such a stove of the state of the art is not entirely satisfactory insofar as the protective wall panel can turn out to be bulky and complicates the design of the stove, in particular when the wall panel forms the front wall of the stove. storage space. The bulky appearance of the protective wall panel can also weigh down the aesthetics depending on the nature of the room to be heated.

Le document WO 2016/207395 A1 quant à lui, divulgue un poêle avec une gaine d'alimentation pour poêle à combustible solide, adaptée pour être installée entre un module d'alimentation en combustible solide et un module de combustion dudit combustible solide. La gaine comprend un conduit d'alimentation pour alimenter le module de combustion en combustible solide, un conduit d'admission d'air pour alimenter le module de combustion en air, et un conduit d'évacuation des fumées pour évacuer vers le module d'alimentation les fumées émises par la combustion. Au moins une partie du conduit d'admission d'air est intercalée entre le conduit d'alimentation et le conduit d'évacuation des fumées.The document WO 2016/207395 A1 meanwhile, discloses a stove with a supply duct for a solid fuel stove, adapted to be installed between a solid fuel supply module and a combustion module of said solid fuel. The sheath comprises a supply duct for supplying the combustion module with solid fuel, an air intake duct for supplying the combustion module with air, and a smoke evacuation duct for discharging to the combustion module. feeding the fumes emitted by the combustion. At least a part of the air intake duct is interposed between the supply duct and the smoke evacuation duct.

Exposé de l'inventionDisclosure of Invention

L'invention vise à remédier en tout ou partie aux inconvénients précités. A cet effet, l'invention a pour objet un poêle, comportant :

  • un caisson, comprenant des parois d'habillage délimitant un volume de réception ;
  • une enceinte de combustion, agencée en dehors du volume de réception, et comprenant un brûleur alimenté en air comburant pour produire une flamme ;
  • un réservoir à combustible, agencé dans le volume de réception ;
  • des moyens de fixation, agencés pour fixer l'enceinte de combustion au caisson de manière à laisser une zone d'espacement entre l'enceinte de combustion et le caisson ;
  • un tube d'approvisionnement, comprenant une partie s'étendant dans la zone d'espacement, et agencé pour relier le réservoir à combustible à l'enceinte de combustion de manière à approvisionner le brûleur en combustible ;
  • un conduit d'évacuation, agencé dans le volume de réception pour évacuer des fumées de combustion hors du caisson ;
  • un tube d'évacuation, comprenant une partie s'étendant dans la zone d'espacement, et agencé pour relier l'enceinte de combustion au conduit d'évacuation de manière à évacuer les fumées de combustion de l'enceinte de combustion ;
  • un échangeur thermique, agencé dans le volume de réception pour transférer l'énergie thermique des fumées de combustion à un air ambiant d'une pièce à chauffer circulant dans le volume de réception ;
  • des moyens de circulation, agencés pour faire circuler l'air ambiant de la pièce à chauffer dans le volume de réception via l'échangeur thermique.
The invention aims to remedy all or part of the aforementioned drawbacks. To this end, the subject of the invention is a stove, comprising:
  • a box, comprising covering walls delimiting a reception volume;
  • a combustion enclosure, arranged outside the reception volume, and comprising a burner supplied with combustion air to produce a flame;
  • a fuel tank, arranged in the receiving volume;
  • fixing means, arranged to fix the combustion chamber to the casing so as to leave a spacing zone between the combustion chamber and the casing;
  • a supply tube, comprising a part extending into the spacing zone, and arranged to connect the fuel tank to the combustion chamber so as to supply the burner with fuel;
  • an evacuation duct, arranged in the reception volume to evacuate combustion fumes from the box;
  • an evacuation tube, comprising a part extending in the spacing zone, and arranged to connect the combustion enclosure to the evacuation conduit so as to evacuate the combustion fumes from the combustion enclosure;
  • a heat exchanger, arranged in the reception volume to transfer the thermal energy of the combustion fumes to ambient air of a room to be heated circulating in the reception volume;
  • circulation means, arranged to circulate the ambient air of the room to be heated in the reception volume via the heat exchanger.

Ainsi, un tel poêle selon l'invention permet de s'affranchir d'un panneau mural de protection dédié en réduisant le flux de rayonnement thermique transmis par la face arrière (i.e. orientée vers la zone d'espacement) de l'enceinte de combustion. Ceci est rendu possible grâce :

  • au tube d'évacuation qui permet d'évacuer les fumées de combustion hors de l'enceinte de combustion ;
  • à l'échangeur thermique, agencé dans le volume de réception délimité par le caisson, et permettant le transfert de l'énergie thermique des fumées de combustion dans le volume de réception, et non dans l'enceinte de combustion ;
  • aux moyens de circulation, qui permettent une diffusion de la chaleur par convection.
Thus, such a stove according to the invention makes it possible to dispense with a dedicated protective wall panel by reducing the flow of thermal radiation transmitted by the rear face (ie oriented towards the spacing zone) of the combustion enclosure. . This is made possible thanks to:
  • the evacuation tube which allows the combustion fumes to be evacuated from the combustion chamber;
  • to the heat exchanger, arranged in the reception volume delimited by the casing, and allowing the transfer of the thermal energy of the combustion fumes into the reception volume, and not into the combustion chamber;
  • to the means of circulation, which allow heat to be diffused by convection.

Il est donc rendu possible de conserver de simples parois d'habillage et éventuellement de prévoir une couche d'isolation thermique ou une lame d'air agencée autour du réservoir à combustible et/ou de prévoir des matériaux de type isolants thermiques agencés de part et d'autre de la face arrière de l'enceinte de combustion, ce qui est moins encombrant et plus simple à mettre en oeuvre qu'un panneau mural de protection, pour limiter la température et réduire le rayonnement du foyer, à l'arrière de l'enceinte de combustion.It is therefore made possible to keep simple covering walls and possibly to provide a thermal insulation layer or an air space arranged around the fuel tank and/or to provide materials of the thermal insulating type arranged on either side. on the other side of the rear face of the combustion enclosure, which is less bulky and simpler to implement than a protective wall panel, to limit the temperature and reduce radiation from the hearth, at the rear of the combustion chamber.

En outre, le réservoir à combustible comporte ses propres parois, distinctes des parois d'habillage du caisson. Ainsi, un tel poêle selon l'invention permet également de s'affranchir d'un panneau mural de protection formant une paroi du réservoir à combustible, ce qui simplifie la conception du poêle.In addition, the fuel tank has its own walls, distinct from the casing cladding walls. Thus, such a stove according to the invention also makes it possible to overcome a protective wall panel forming a wall of the fuel tank, which simplifies the design of the stove.

Par ailleurs, la partie du tube d'approvisionnement et la partie du tube d'évacuation sont dissimulées dans la zone d'espacement.Further, the part of the supply tube and the part of the exhaust tube are concealed in the spacing area.

Enfin, un tel poêle selon l'invention permet de déporter le réservoir à combustible, le conduit d'évacuation et l'échangeur thermique en dehors de l'enceinte de combustion, ce qui permet une rupture esthétique permettant de se focaliser sur la flamme. La fonction de convection est séparée de la fonction de rayonnement.Finally, such a stove according to the invention makes it possible to deport the fuel tank, the evacuation duct and the heat exchanger outside the combustion chamber, which allows an aesthetic break making it possible to focus on the flame. The convection function is separated from the radiation function.

DéfinitionsDefinitions

  • Par « flamme », on entend une réaction de combustion.By "flame" is meant a combustion reaction.
  • Par « caisson », on entend une enceinte creuse pouvant renfermer des objets possédant des fonctions techniques.By "box" is meant a hollow enclosure that can contain objects with technical functions.

Le poêle selon l'invention peut comporter une ou plusieurs des caractéristiques suivantes.The stove according to the invention may comprise one or more of the following characteristics.

Selon une caractéristique de l'invention, le poêle comporte :

  • une première ouverture, formée dans une paroi d'habillage du caisson, et autorisant une entrée de l'air ambiant dans le volume de réception ;
  • une deuxième ouverture, formée dans une paroi d'habillage du caisson, et autorisant une sortie de l'air ambiant hors du volume de réception ;
et les moyens de circulation sont agencés pour faire circuler l'air ambiant de la première ouverture vers la deuxième ouverture via l'échangeur thermique.According to one characteristic of the invention, the stove comprises:
  • a first opening, formed in a covering wall of the box, and allowing entry of ambient air into the reception volume;
  • a second opening, formed in a covering wall of the box, and allowing the ambient air to exit from the reception volume;
and the circulation means are arranged to circulate the ambient air from the first opening to the second opening via the heat exchanger.

Selon une caractéristique de l'invention, la première ouverture est située au-dessus de l'enceinte de combustion ; la deuxième ouverture est située au-dessous de l'enceinte de combustion ; et les moyens de circulation sont agencés pour aspirer l'air ambiant de la première ouverture vers la deuxième ouverture via l'échangeur thermique.According to one characteristic of the invention, the first opening is located above the combustion enclosure; the second opening is located below the combustion enclosure; and the circulation means are arranged to draw ambient air from the first opening to the second opening via the heat exchanger.

Ainsi, un avantage procuré par une telle convection forcée est d'obtenir une déstratification de l'air ambiant en déplaçant l'air ambiant d'une partie haute vers une partie basse.Thus, an advantage procured by such forced convection is to obtain a destratification of the ambient air by moving the ambient air from an upper part to a lower part.

Selon une caractéristique de l'invention, le poêle comporte un déflecteur agencé pour dévier l'air ambiant sortant de la deuxième ouverture vers le bas.According to a characteristic of the invention, the stove comprises a deflector arranged to deflect the ambient air leaving the second opening downwards.

Ainsi, un avantage procuré est d'améliorer la déstratification de l'air ambiant.Thus, an advantage obtained is to improve the destratification of the ambient air.

Selon une caractéristique de l'invention, le poêle comporte :

  • un conduit d'alimentation en air comburant, agencé dans le volume de réception ;
  • un tube d'alimentation en air comburant, comprenant une partie s'étendant dans la zone d'espacement, et agencé pour relier le conduit d'alimentation en air comburant à l'enceinte de combustion de manière à alimenter le brûleur en air comburant.
According to one characteristic of the invention, the stove comprises:
  • a combustion air supply duct, arranged in the reception volume;
  • a combustion air supply tube, comprising a part extending in the spacing zone, and arranged to connect the combustion air supply conduit to the combustion enclosure so as to supply the burner with combustion air.

Ainsi, un avantage procuré est d'épurer la chambre de combustion en dissimulant les parties techniques (conduit d'alimentation en air comburant, conduit d'évacuation des fumées) dans l'armature, et ce afin de se focaliser sur la flamme. En outre, la partie du tube d'alimentation en air comburant est dissimulée dans la zone d'espacement.Thus, an advantage obtained is to purify the combustion chamber by concealing the technical parts (combustive air supply duct, smoke evacuation duct) in the frame, in order to focus on the flame. In addition, the part of the combustion air supply tube is concealed in the spacing zone.

Selon une caractéristique de l'invention, la partie du tube d'alimentation en air comburant s'étend dans la zone d'espacement au-dessous de la partie du tube d'approvisionnement et au-dessus de la partie du tube d'évacuation.According to a characteristic of the invention, the part of the combustion air supply tube extends in the space zone below the part of the supply tube and above the part of the evacuation tube. .

Ainsi, un avantage procuré est d'éviter de chauffer le combustible présent dans le tube d'approvisionnement par rayonnement thermique émis par le tube d'évacuation, en interposant le tube d'alimentation en air comburant. En outre, un avantage procuré est de chauffer l'air comburant présent dans le tube d'alimentation en air comburant par rayonnement thermique émis par le tube d'évacuation, ce qui augmente le rendement.Thus, an advantage obtained is to avoid heating the fuel present in the supply tube by thermal radiation emitted by the evacuation tube, by interposing the combustion air supply tube. In addition, an advantage obtained is to heat the combustion air present in the combustion air supply tube by thermal radiation emitted by the evacuation tube, which increases the efficiency.

Selon une caractéristique de l'invention, les moyens de fixation comportent le tube d'approvisionnement, le tube d'évacuation et le tube d'alimentation en air comburant.According to one characteristic of the invention, the fixing means comprise the supply tube, the evacuation tube and the combustion air supply tube.

Ainsi, un avantage procuré est d'obtenir une tenue mécanique satisfaisante de l'enceinte sans nécessiter des moyens de fixation additionnels dédiés.Thus, an advantage obtained is to obtain satisfactory mechanical strength of the enclosure without requiring additional dedicated fixing means.

Selon une caractéristique de l'invention, le conduit d'alimentation en air comburant et le conduit d'évacuation sont coaxiaux.According to one characteristic of the invention, the combustion air supply duct and the exhaust duct are coaxial.

Ainsi, un avantage procuré est de réduire l'encombrement du poêle.Thus, an advantage obtained is to reduce the size of the stove.

Selon une caractéristique de l'invention, le caisson possède une masse adaptée pour soutenir l'enceinte de combustion ; l'enceinte de combustion et le caisson comportant chacune une embase ; et les moyens de fixation sont agencés pour suspendre l'embase de l'enceinte de combustion au-dessus de l'embase du caisson.According to one characteristic of the invention, the casing has a mass adapted to support the combustion enclosure; the combustion chamber and the box each comprising a base; and the fixing means are arranged to suspend the base of the combustion enclosure above the base of the box.

Ainsi, un avantage procuré est de suspendre l'enceinte et de s'affranchir de pieds pour la supporter.Thus, an advantage obtained is to suspend the enclosure and to dispense with feet to support it.

Selon une caractéristique de l'invention, le caisson s'étend suivant un axe vertical, et le tube d'approvisionnement s'étend suivant une direction oblique par rapport à l'axe vertical de manière à approvisionner le brûleur en combustible par gravité.According to one characteristic of the invention, the box extends along a vertical axis, and the supply tube extends along an oblique direction with respect to the vertical axis so as to supply the burner with fuel by gravity.

Ainsi, un avantage procuré est d'obtenir un guidage aisé du combustible vers le brûleur.Thus, an advantage obtained is to obtain easy guidance of the fuel towards the burner.

Selon une caractéristique de l'invention, le caisson comporte au moins une trappe latérale.According to a characteristic of the invention, the box comprises at least one side hatch.

Ainsi, un avantage procuré est de faciliter la maintenance du poêle.Thus, an advantage obtained is to facilitate the maintenance of the stove.

Selon une caractéristique de l'invention, le caisson comporte une embase, destinée à reposer sur un sol de la pièce à chauffer, et réalisée dans un matériau élastique.According to one characteristic of the invention, the box comprises a base, intended to rest on a floor of the room to be heated, and made of an elastic material.

Ainsi, un avantage procuré est de réduire les vibrations éventuelles causées par des éléments techniques présents dans le caisson, par exemple les moteurs des moyens d'aspiration.Thus, an advantage obtained is to reduce any vibrations caused by technical elements present in the box, for example the motors of the suction means.

Selon une caractéristique de l'invention, les parois d'habillage du caisson sont réalisées en acier.According to one characteristic of the invention, the casing cladding walls are made of steel.

L'invention a également pour objet une installation comportant :

  • un poêle conforme à l'invention ;
  • une pièce à chauffer, présentant un air ambiant, et comprenant un conduit de cheminée raccordé au conduit d'évacuation ;
et les moyens de circulation sont agencés pour faire circuler l'air ambiant dans le volume de réception via l'échangeur thermique.The invention also relates to an installation comprising:
  • a stove according to the invention;
  • a room to be heated, having ambient air, and comprising a flue pipe connected to the exhaust pipe;
and the circulation means are arranged to circulate the ambient air in the reception volume via the heat exchanger.

Selon une caractéristique de l'invention, la pièce à chauffer comporte un mur, et le caisson est apposé contre le mur.According to one characteristic of the invention, the room to be heated comprises a wall, and the box is affixed against the wall.

Brève description des dessinsBrief description of the drawings

D'autres caractéristiques et avantages apparaîtront dans l'exposé détaillé de différents modes de réalisation de l'invention, l'exposé étant assorti d'exemples et de références aux dessins joints.

  • Figure 1 est une vue schématique en coupe illustrant le principe de fonctionnement d'un poêle selon l'invention. Les flèches intitulées « C » montrent le déplacement des combustibles. Les flèches intitulées « A » montrent le déplacement de l'air comburant. Les flèches intitulées « F » montrent le déplacement des fumées de combustion.
  • Figure 2 est une vue schématique de face d'un poêle selon l'invention.
  • Figure 3 est une vue schématique de côté d'un poêle selon l'invention.
  • Figure 4 est une vue schématique partielle illustrant la partie inférieure et arrière du volume de réception délimité par le caisson.
  • Figure 5 est une vue schématique partielle illustrant l'intérieur du caisson, vue de l'arrière.
  • Figure 6 est une vue schématique en perspective de côté d'un poêle selon l'invention.
Other characteristics and advantages will appear in the detailed description of various embodiments of the invention, the description being accompanied by examples and references to the attached drawings.
  • Figure 1 is a schematic sectional view illustrating the principle of operation of a stove according to the invention. The arrows labeled "C" show the displacement of fuels. The arrows labeled "A" show the displacement of combustion air. The arrows labeled “F” show the movement of combustion fumes.
  • Figure 2 is a schematic front view of a stove according to the invention.
  • Figure 3 is a schematic side view of a stove according to the invention.
  • Figure 4 is a partial schematic view illustrating the lower and rear part of the reception volume delimited by the box.
  • Figure 5 is a partial schematic view illustrating the interior of the box, viewed from the rear.
  • Figure 6 is a schematic side perspective view of a stove according to the invention.

Exposé détaillé des modes de réalisationDetailed description of embodiments

Les éléments identiques ou assurant la même fonction porteront les mêmes références pour les différents modes de réalisation, par souci de simplification.Elements that are identical or provide the same function will bear the same references for the different embodiments, for the sake of simplification.

Un objet de l'invention est un poêle 1, comportant :

  • un caisson, comprenant des parois d'habillage 9 délimitant un volume de réception ;
  • une enceinte 3 de combustion, agencée en dehors du volume de réception, et comprenant un brûleur 30 alimenté en air comburant A pour produire une flamme ;
  • un réservoir 4 à combustible C, agencé dans le volume de réception ;
  • des moyens de fixation, agencés pour fixer l'enceinte 3 de combustion au caisson de manière à laisser une zone d'espacement ZE entre l'enceinte 3 de combustion et le caisson ;
  • un tube d'approvisionnement 5, comprenant une partie 50 s'étendant dans la zone d'espacement ZE, et agencé pour relier le réservoir 4 à combustible C à l'enceinte 3 de combustion de manière à approvisionner le brûleur 30 en combustible C ;
  • un conduit d'évacuation Ce, agencé dans le volume de réception pour évacuer des fumées F de combustion hors du caisson ;
  • un tube d'évacuation 6, comprenant une partie 60 s'étendant dans la zone d'espacement ZE, et agencé pour relier l'enceinte 3 de combustion au conduit d'évacuation Ce de manière à évacuer les fumées F de combustion de l'enceinte 3 de combustion ;
  • un échangeur thermique 7, agencé dans le volume de réception pour transférer l'énergie thermique des fumées F de combustion à un air ambiant d'une pièce à chauffer circulant dans le volume de réception ;
  • des moyens de circulation, agencés pour faire circuler l'air ambiant de la pièce à chauffer dans le volume de réception via l'échangeur thermique 7.
An object of the invention is a stove 1, comprising:
  • a box, comprising covering walls 9 delimiting a reception volume;
  • a combustion enclosure 3, arranged outside the reception volume, and comprising a burner 30 supplied with combustion air A to produce a flame;
  • a fuel tank 4 C, arranged in the reception volume;
  • fixing means, arranged to fix the combustion enclosure 3 to the box so as to leave a spacing zone ZE between the combustion enclosure 3 and the box;
  • a supply tube 5, comprising a part 50 extending in the spacing zone ZE, and arranged to connect the tank 4 with fuel C to the combustion chamber 3 so as to supply the burner 30 with fuel C;
  • an evacuation duct C e , arranged in the reception volume to evacuate combustion fumes F from the box;
  • an evacuation tube 6, comprising a part 60 extending in the spacing zone ZE, and arranged to connect the combustion chamber 3 to the evacuation duct C e so as to evacuate the combustion fumes F from the combustion chamber 3;
  • a heat exchanger 7, arranged in the reception volume to transfer the thermal energy of the combustion fumes F to ambient air of a room to be heated circulating in the reception volume;
  • circulation means, arranged to circulate the ambient air of the room to be heated in the reception volume via the heat exchanger 7.

CaissonBox

Le caisson comporte avantageusement une armature 2, sur laquelle sont montées les parois d'habillage 9. L'armature 2 du caisson est avantageusement réalisée dans un matériau métallique. L'armature 2 du caisson peut comporter un ensemble de montants et de traverses agencé pour soutenir le poêle 1. Le caisson possède avantageusement une masse adaptée pour soutenir l'enceinte 3 de combustion. La masse de l'armature 2 est avantageusement adaptée de sorte que le caisson est autoporté. Le caisson comporte une embase 20, destinée à reposer sur un sol de la pièce à chauffer. L'embase 20 du caisson est avantageusement réalisée dans un matériau élastique, par exemple un caoutchouc. L'embase 20 du caisson peut comporter des coussinets réalisés dans le matériau élastique. Le caisson s'étend préférentiellement suivant un axe vertical. Le caisson comporte avantageusement au moins une trappe latérale 21. Les parois d'habillage 9 du caisson sont avantageusement réalisées en acier. Le caisson et l'enceinte 3 de combustion sont dépourvus d'un habillage commun.The box advantageously comprises a frame 2, on which the covering walls 9 are mounted. The frame 2 of the box is advantageously made of a metallic material. The frame 2 of the box may comprise a set of uprights and crosspieces arranged to support the stove 1. The box advantageously has a mass adapted to support the enclosure 3 of combustion. The mass of the frame 2 is advantageously adapted so that the box is self-supporting. The box comprises a base 20, intended to rest on a floor of the room to be heated. The base 20 of the box is advantageously made of an elastic material, for example a rubber. The base 20 of the box may include pads made of the elastic material. The box preferably extends along a vertical axis. The box advantageously comprises at least one side hatch 21. The covering walls 9 of the box are advantageously made of steel. The box and the combustion chamber 3 do not have a common casing.

Alimentation en air comburantCombustion air supply

Le poêle 1 comporte avantageusement :

  • un conduit d'alimentation Ca en air comburant A, agencé dans le volume de réception ;
  • un tube d'alimentation 8 en air comburant A, comprenant une partie 80 s'étendant dans la zone d'espacement ZE, et agencé pour relier le conduit d'alimentation Ca en air comburant A à l'enceinte 3 de combustion de manière à alimenter le brûleur 30 en air comburant A.
Stove 1 advantageously comprises:
  • a supply conduit C a for combustion air A, arranged in the reception volume;
  • a combustion air A supply tube 8, comprising a part 80 extending in the spacing zone ZE, and arranged to connect the supply conduit C a with combustion air A to the combustion chamber 3 in such a way to supply the burner 30 with combustion air A.

Il est à noter que le conduit d'alimentation Ca en air comburant A est optionnel. L'air A comburant peut être prélevé directement dans la pièce à chauffer de manière à circuler directement dans le tube d'alimentation 8 en air comburant A.It should be noted that the supply duct C a for combustion air A is optional. The combustion air A can be taken directly from the room to be heated so as to circulate directly in the combustion air A supply tube 8.

Seules des parties d'extrémités du conduit d'alimentation Ca en air comburant A sont illustrées à la figure 5, lesdites parties d'extrémité pouvant être raccordées par un flexible de raccordement (non illustré).Only the end portions of the combustion air supply duct C a A are illustrated in figure 5 , said end portions being connectable by a connecting hose (not shown).

La partie 80 du tube d'alimentation 8 en air comburant A s'étend avantageusement dans la zone d'espacement ZE au-dessous de la partie 50 du tube d'approvisionnement 5 et au-dessus de la partie 60 du tube d'évacuation 6.Part 80 of combustion air supply tube 8 A advantageously extends in spacing zone ZE below part 50 of supply tube 5 and above part 60 of exhaust tube 6.

Le conduit d'alimentation Ca en air comburant A et le conduit d'évacuation Ce sont avantageusement coaxiaux. Plus précisément, le conduit d'alimentation Ca en air comburant A et le conduit d'évacuation Ce comportent avantageusement des parties supérieures coaxiales.The supply duct C a of combustion air A and the exhaust duct C e are advantageously coaxial. More specifically, the supply duct C a of combustion air A and the exhaust duct C e advantageously comprise coaxial upper parts.

Enceinte de combustionCombustion chamber

L'enceinte 3 de combustion comporte une embase 31, de préférence suspendue, c'est-à-dire s'étendant au-dessus du sol de la pièce à chauffer. L'enceinte 3 de combustion comporte au moins une vitre 32 agencée pour observer la flamme. Le poêle 1 comporte avantageusement une première couche d'isolation thermique montée à l'extérieur de l'enceinte 3 de combustion, agencée de manière à réduire le flux de rayonnement thermique transmis par la face arrière (i.e. orientée vers la zone d'espacement ZE) de l'enceinte 3 de combustion. Le poêle 1 comporte avantageusement une deuxième couche d'isolation thermique montée à l'intérieur de l'enceinte 3 de combustion, et agencée de manière à réduire le flux de rayonnement thermique transmis par la face arrière (i.e. orientée vers la zone d'espacement ZE) de l'enceinte 3 de combustion.The combustion enclosure 3 comprises a base 31, preferably suspended, that is to say extending above the floor of the room to be heated. The combustion enclosure 3 comprises at least one window 32 arranged to observe the flame. The stove 1 advantageously comprises a first layer of thermal insulation mounted outside the combustion chamber 3, arranged so as to reduce the flow of thermal radiation transmitted by the rear face (i.e. oriented towards the spacing zone ZE ) of the combustion enclosure 3. The stove 1 advantageously comprises a second layer of thermal insulation mounted inside the combustion enclosure 3, and arranged so as to reduce the flow of thermal radiation transmitted by the rear face (i.e. oriented towards the spacing zone ZE) of the combustion enclosure 3.

Réservoir à combustibleFuel tank

Le réservoir 4 à combustible C est fixé à l'armature 2 du caisson. Le réservoir 4 à combustible comporte des parois 40 formant une enceinte adaptée pour contenir des combustibles C solides, de préférence des granulés de bois.The fuel tank 4 C is fixed to the frame 2 of the casing. The fuel tank 4 has walls 40 forming an enclosure adapted to contain solid fuels C, preferably wood pellets.

Le poêle 1 peut comporter une couche d'isolation thermique ou une lame d'air agencée autour du réservoir 4 à combustible C.Stove 1 may include a layer of thermal insulation or an air gap arranged around fuel tank 4 C.

Fixation de l'enceinte à l'armatureSecuring the enclosure to the frame

Les moyens de fixation comportent avantageusement le tube d'approvisionnement 5, le tube d'évacuation 6 et le tube d'alimentation 8 en air comburant A. Plus précisément, les moyens de fixation comportent avantageusement la partie 50 du tube d'approvisionnement 5, la partie 60 du tube d'évacuation et la partie 80 du tube d'alimentation 8 en air comburant A, agencées pour assurer la liaison mécanique entre l'armature 2 du caisson et l'enceinte 3 de combustion.The fixing means advantageously comprise the supply tube 5, the evacuation tube 6 and the supply tube 8 of combustion air A. More specifically, the fixing means advantageously comprise the part 50 of the supply tube 5, the part 60 of the evacuation tube and the part 80 of the supply tube 8 of combustion air A, arranged to ensure the mechanical connection between the frame 2 of the box and the enclosure 3 of combustion.

Les moyens de fixation sont avantageusement agencés pour suspendre l'embase 31 de l'enceinte 3 de combustion au-dessus de l'embase 20 du caisson.The fixing means are advantageously arranged to suspend the base 31 of the combustion enclosure 3 above the base 20 of the box.

Tube d'approvisionnementsupply tube

Le tube d'approvisionnement 5 s'étend avantageusement suivant une direction oblique par rapport à l'axe vertical du caisson de manière à approvisionner le brûleur 30 en combustible C par gravité.The supply tube 5 advantageously extends in a direction oblique to the vertical axis of the casing so as to supply the burner 30 with fuel C by gravity.

Le tube d'approvisionnement 5 est avantageusement relié au réservoir 4 à combustible C à l'aide d'une vis sans fin 51 permettant de doser l'alimentation en combustible C.The supply tube 5 is advantageously connected to the fuel tank 4 C by means of an endless screw 51 making it possible to meter the supply of fuel C.

Conduit d'évacuationExhaust pipe

Seules des parties d'extrémités du conduit d'évacuation Ce sont illustrées aux figures 4 et 5, lesdites parties d'extrémité pouvant être raccordées par un flexible de raccordement (non illustré).Only the end parts of the exhaust duct C e are illustrated in figure 4 And 5 , said end portions being connectable by a connecting hose (not shown).

Echangeur thermiqueHeat exchanger

A titre d'exemple non limitatif, l'échangeur thermique 7 peut être un échangeur à tubes 71. Les fumées F de combustion circulent dans l'échangeur thermique 7 de manière à échanger des calories avec l'air ambiant de la pièce à chauffer circulant dans le volume de réception.By way of non-limiting example, the heat exchanger 7 can be a tube exchanger 71. The combustion fumes F circulate in the heat exchanger 7 so as to exchange calories with the ambient air of the room to be heated circulating in the receiving volume.

Tube d'évacuationEvacuation tube

Le tube d'évacuation 6 comporte avantageusement une première portion agencée pour évacuer les fumées F de combustion de l'enceinte 3 de combustion vers l'échangeur thermique 7.The evacuation tube 6 advantageously comprises a first portion arranged to evacuate the combustion fumes F from the combustion chamber 3 towards the heat exchanger 7.

Le tube d'évacuation 6 comporte avantageusement une deuxième portion agencée pour réceptionner les fumées F de combustion sortant de l'échangeur thermique 7 afin de les évacuer vers le conduit d'évacuation Ce.The evacuation tube 6 advantageously comprises a second portion arranged to receive the combustion fumes F exiting from the heat exchanger 7 in order to evacuate them towards the evacuation duct C e .

Circulation de l'air ambiantAmbient air circulation

Le poêle 1 comporte avantageusement :

  • une première ouverture (non illustrée), formée dans une paroi d'habillage 9 du caisson, et autorisant une entrée de l'air ambiant dans le volume de réception ;
  • une deuxième ouverture 90, formée dans une paroi d'habillage 9 du caisson, et autorisant une sortie de l'air ambiant hors du volume de réception.
Stove 1 advantageously comprises:
  • a first opening (not shown), formed in a covering wall 9 of the box, and allowing entry of ambient air into the reception volume;
  • a second opening 90, formed in a covering wall 9 of the box, and allowing the ambient air to exit from the reception volume.

Les moyens de circulation sont avantageusement agencés pour faire circuler l'air ambiant de la première ouverture vers la deuxième ouverture 90 via l'échangeur thermique 7.The circulation means are advantageously arranged to circulate the ambient air from the first opening to the second opening 90 via the heat exchanger 7.

La première ouverture est avantageusement située au-dessus de l'enceinte 3 de combustion. Le terme « au-dessus » s'entend en projection orthogonale sur la paroi d'habillage 9 où la première ouverture est formée. La deuxième ouverture 90 est avantageusement située au-dessous de l'enceinte 3 de combustion. Le terme « au-dessous » s'entend en projection orthogonale sur la paroi d'habillage 9 où la deuxième ouverture 90 est formée. Les moyens de circulation sont avantageusement agencés pour aspirer l'air ambiant de la première ouverture vers la deuxième ouverture 90 via l'échangeur thermique 7. Le poêle 1 comporte avantageusement un déflecteur agencé pour dévier l'air ambiant sortant de la deuxième ouverture vers le bas.The first opening is advantageously located above the combustion chamber 3. The term "above" means in orthogonal projection on the covering wall 9 where the first opening is formed. The second opening 90 is advantageously located below the enclosure 3 of combustion. The term "below" means in orthogonal projection on the covering wall 9 where the second opening 90 is formed. The circulation means are advantageously arranged to suck the ambient air from the first opening towards the second opening 90 via the heat exchanger 7. The stove 1 advantageously comprises a deflector arranged to deflect the ambient air leaving the second opening towards the down.

Selon une alternative, la première ouverture est située au-dessous de l'enceinte 3 de combustion et la deuxième ouverture 90 est située au-dessus de l'enceinte 3 de combustion. Les moyens de circulation permettent alors une convection naturelle de l'air ambiant de la première ouverture vers la deuxième ouverture 90 via l'échangeur thermique 7.According to an alternative, the first opening is located below the combustion enclosure 3 and the second opening 90 is located above the combustion enclosure 3. The circulation means then allow natural convection of the ambient air from the first opening to the second opening 90 via the heat exchanger 7.

Selon un mode de réalisation non illustré, le poêle 1 comporte :

  • une première ouverture, formée dans une paroi d'habillage 9 du caisson, et autorisant une entrée de l'air ambiant dans le volume de réception ;
  • une deuxième ouverture, formée dans l'enceinte 3 de combustion, et autorisant une sortie de l'air ambiant hors de l'enceinte 3 de combustion.
According to an embodiment not illustrated, the stove 1 comprises:
  • a first opening, formed in a covering wall 9 of the box, and allowing entry of ambient air into the reception volume;
  • a second opening, formed in the enclosure 3 of combustion, and allowing an outlet of ambient air from the enclosure 3 of combustion.

Le poêle 1 comporte un échangeur thermique additionnel, agencé dans l'enceinte 3 de combustion, en amont de la deuxième ouverture, pour transférer l'énergie thermique des fumées F de combustion à l'air ambiant sortant de l'échangeur thermique 7.The stove 1 comprises an additional heat exchanger, arranged in the combustion chamber 3, upstream of the second opening, to transfer the thermal energy of the combustion fumes F to the ambient air exiting from the heat exchanger 7.

A cet effet, le poêle 1 comporte un tube de liaison, agencé pour relier l'air ambiant sortant de l'échangeur thermique 7 à l'échangeur thermique additionnel. Le tube de liaison permet de relier le volume de réception, délimité par le caisson, à l'enceinte 3 de combustion. Les moyens de circulation sont agencés pour faire circuler l'air ambiant de la pièce à chauffer dans le volume de réception via l'échangeur thermique 7. Les moyens de circulation sont également agencés pour faire circuler l'air ambiant sortant de l'échangeur thermique 7 vers l'échangeur thermique additionnel via le tube de liaison.To this end, the stove 1 comprises a connecting tube, arranged to connect the ambient air leaving the heat exchanger 7 to the additional heat exchanger. The connecting tube makes it possible to connect the reception volume, delimited by the casing, to the enclosure 3 of combustion. The circulation means are arranged to circulate the ambient air of the room to be heated in the reception volume via the heat exchanger 7. The circulation means are also arranged to circulate the ambient air leaving the heat exchanger 7 to the additional heat exchanger via the connection pipe.

InstallationFacility

Un objet de l'invention est une installation, comportant :

  • un poêle 1 conforme à l'invention ;
  • une pièce à chauffer, présentant un air ambiant, et comprenant un conduit de cheminée raccordé au conduit d'évacuation Ce.
An object of the invention is an installation, comprising:
  • a stove 1 according to the invention;
  • a room to be heated, having ambient air, and comprising a chimney pipe connected to the evacuation pipe C e .

Les moyens de circulation sont agencés pour faire circuler l'air ambiant dans le volume de réception via l'échangeur thermique 7.The circulation means are arranged to circulate the ambient air in the reception volume via the heat exchanger 7.

La pièce à chauffer comporte un mur, et le caisson est avantageusement apposé contre le mur.The room to be heated has a wall, and the box is advantageously affixed against the wall.

Claims (15)

  1. Stove (1), having:
    - a box, comprising cladding walls (9) delimiting a reception volume;
    - a combustion chamber (3), arranged outside of the reception volume, and comprising a burner (30) supplied with combustion air (A) to produce a flame;
    - a tank (4) for fuel (C), arranged in the reception volume;
    - fastening means, arranged to fasten the combustion chamber (3) to the box so as to leave a spacing zone (ZE) between the combustion chamber (3) and the box;
    - a feed pipe (5), comprising a part (50) extending in the spacing zone (ZE), and arranged to connect the tank (4) for fuel (C) to the combustion chamber (3) so as to feed the burner (30) with fuel;
    - a discharge duct (Ce), arranged in the reception volume to discharge combustion flue-gases (F) out of the box;
    - a discharge pipe (6), comprising a part (60) extending in the spacing zone (ZE), and arranged to connect the combustion chamber (3) to the discharge duct (Ce) so as to discharge the combustion flue-gases (F) from the combustion chamber (3);
    characterized in that said stove also has
    - a heat exchanger (7), arranged in the reception volume to transfer heat energy from the combustion flue-gases (F) to ambient air of a room to be heated circulating in the reception volume;
    - circulation means, arranged to make the ambient air circulate from the room to be heated into the reception volume via the heat exchanger (7).
  2. Stove (1) according to Claim 1, having:
    - a first opening, formed in a cladding wall (9) of the box, and allowing the ambient air to enter the reception volume;
    - a second opening (90), formed in a cladding wall (9) of the box, and allowing the ambient air to leave the reception volume;
    and the circulation means are arranged to make the ambient air circulate from the first opening to the second opening (90) via the heat exchanger (7).
  3. Stove (1) according to Claim 2, wherein the first opening is situated above the combustion chamber (3); the second opening (90) is situated below the combustion chamber (3); and the circulation means are arranged to suck the ambient air from the first opening to the second opening (90) via the heat exchanger (7).
  4. Stove (1) according to Claim 3, having a deflector arranged to deflect the ambient air leaving the second opening (90) downwards.
  5. Stove (1) according to one of Claims 1 to 4, having:
    - a supply duct (Ca) supplying combustion air (A), arranged in the reception volume;
    - a supply pipe (8) supplying combustion air (A), comprising a part (80) extending in the spacing zone (ZE), and arranged to connect the supply duct (Ca) supplying combustion air (A) to the combustion chamber (3) so as to supply the burner (30) with combustion air (A).
  6. Stove (1) according to Claim 5, wherein the part (80) of the supply pipe (8) supplying combustion air (A) extends in the spacing zone (ZE) below the part (50) of the feed pipe (5) and above the part (60) of the discharge pipe (6).
  7. Stove (1) according to Claim 5 or 6, wherein the fastening means have the feed pipe (5), the discharge pipe (6) and the supply pipe (8) supplying combustion air (A).
  8. Stove (1) according to one of Claims 5 to 7, wherein the supply pipe (Ca) supplying combustion air (A) and the discharge pipe (Ce) are coaxial.
  9. Stove (1) according to one of Claims 1 to 8, wherein the box has a mass suitable for supporting the combustion chamber (3); the combustion chamber (3) and the box each having a base (31, 20); and the fastening means are arranged to suspend the base (31) of the combustion chamber (3) above the base (20) of the box.
  10. Stove (1) according to one of Claims 1 to 9, wherein the box extends along a vertical axis, and the feed pipe (5) extends in an oblique direction with respect to the vertical axis so as to feed the burner (30) with fuel (C) by gravity.
  11. Stove (1) according to one of Claims 1 to 10, wherein the box has at least one lateral hatch (21).
  12. Stove (1) according to one of Claims 1 to 11, wherein the box has a base (20), intended to rest on a floor of the room to be heated, and made of an elastic material.
  13. Stove (1) according to one of Claims 1 to 12, wherein the cladding walls (9) of the box are made of steel.
  14. Installation, having:
    - a stove (1) according to one of Claims 1 to 13;
    - a room to be heated, having ambient air, and comprising a flue duct connected to the discharge duct (Ce);
    and the circulation means are arranged to make the ambient air circulate into the reception volume via the heat exchanger (7).
  15. Installation according to Claim 14, wherein the room to be heated has a wall, and the box is affixed against the wall.
EP20155957.2A 2019-02-09 2020-02-06 Wood-burning stove with offset heat exchanger Active EP3693666B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1901303A FR3092647B1 (en) 2019-02-09 2019-02-09 Remote heat exchanger stove

Publications (2)

Publication Number Publication Date
EP3693666A1 EP3693666A1 (en) 2020-08-12
EP3693666B1 true EP3693666B1 (en) 2023-03-29

Family

ID=67107744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20155957.2A Active EP3693666B1 (en) 2019-02-09 2020-02-06 Wood-burning stove with offset heat exchanger

Country Status (2)

Country Link
EP (1) EP3693666B1 (en)
FR (1) FR3092647B1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4200721C2 (en) * 1991-02-19 2002-11-28 Riener Karl Stefan Solid fuel furnace, especially for pellets
ITVR20020001U1 (en) * 2002-01-10 2003-07-10 Gruppo Piazzetta Spa PERFECTED PELLET STOVE
HUP0600848A2 (en) * 2006-11-16 2010-04-28 Fireplace Kft Fireplace with gravitational feeding for pellet
EP3158267B1 (en) * 2015-06-24 2020-04-22 Invicta Group Supply duct for stove
FR3038034B1 (en) 2015-06-24 2019-04-26 Invicta Group SOLID FUEL STOVE AND POWER SUPPLY MODULE OF SUCH STOVE
ITUB20160756A1 (en) * 2016-02-15 2017-08-15 Thermorossi Spa PELLET STOVE OR THERMO-STOVE

Also Published As

Publication number Publication date
FR3092647A1 (en) 2020-08-14
FR3092647B1 (en) 2021-02-12
EP3693666A1 (en) 2020-08-12

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