EP4048953B1 - Fireplace with suspended hearth - Google Patents

Fireplace with suspended hearth Download PDF

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Publication number
EP4048953B1
EP4048953B1 EP20792674.2A EP20792674A EP4048953B1 EP 4048953 B1 EP4048953 B1 EP 4048953B1 EP 20792674 A EP20792674 A EP 20792674A EP 4048953 B1 EP4048953 B1 EP 4048953B1
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EP
European Patent Office
Prior art keywords
hearth
heat exchanger
fireplace
supply
duct
Prior art date
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Application number
EP20792674.2A
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German (de)
French (fr)
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EP4048953A1 (en
EP4048953C0 (en
Inventor
Dominique Imbert
Alexis GUY
Sylvain Raymond
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Atelier Dominique Imbert SAS
Original Assignee
Atelier Dominique Imbert SAS
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Publication of EP4048953C0 publication Critical patent/EP4048953C0/en
Publication of EP4048953B1 publication Critical patent/EP4048953B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/02—Stoves or ranges for gaseous fuels with heat produced solely by flame
    • F24C3/022—Stoves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/002—Stoves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/001—Details arrangements for discharging combustion gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/06—Ornamental features, e.g. grate fronts or surrounds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/34—Elements and arrangements for heat storage or insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/082—Arrangement or mounting of burners on stoves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C5/00—Stoves or ranges for liquid fuels
    • F24C5/18—Liquid-fuel supply arrangements forming parts of stoves or ranges

Definitions

  • the present invention belongs to the field of fireplaces, and more specifically to the field of decorative fireplaces.
  • the present invention relates to a fireplace comprising a suspended hearth and the combustion of which is carried out via a combustible fluid.
  • an open hearth fireplace has various disadvantages, first of all, it offers a low heat energy production yield of between 15% and 20%, moreover, an open hearth achieves incomplete combustion. wood, which leads to significant emissions of fine polluting particles.
  • the open hearth promotes the emission of these particles both in the dwelling and in the atmosphere via the exhaust duct. These fine particles constitute a significant health and environmental risk.
  • open fireplaces increase the risk of fire in the premises in which they are installed.
  • a chimney comprising a hearth suspended from a support, the hearth is delimited laterally by a peripheral wall which is equipped with at least one combustion air inlet, a combustion gas evacuation conduit, the evacuation conduit is integral of a support and comprises, on the one hand, a lower portion integral with an upper part of the hearth, and on the other hand, an upper portion opposite the lower portion.
  • the fireplace further comprises at least one fluid fuel burner which is placed in the hearth facing at least one air inlet.
  • the documents FR 3 013 422 A1 And ES 1 065 510 U disclose suspended hearth fireplaces operating with solid fuel.
  • This type of fireplaces consists, on the one hand, of an open hearth which has an elegant aesthetic shape, and on the other hand, of a combustion gas evacuation pipe connected to an upper part of the open hearth.
  • the exhaust duct also acts as a suspension element of the hearth with respect to a support which is usually formed by a ceiling.
  • these iconic decorative fireplaces have a hearth of a particular shape such as an oblate shape.
  • these hearths generally include an opening which matches their shape and therefore makes it complex to install a window in order to transform these hearths into a closed hearth or an insert.
  • the use of a combustible fluid burner does not produce fine particles due to the incomplete combustion of a solid fuel. In this sense, converting a wood-burning fireplace into a fluid fuel fireplace makes it possible to overcome the health and energy disadvantages of the open wood-burning fireplace. Furthermore, in order to preserve the aesthetics of iconic models, the combustible fluid supply column is at least partially integrated into the evacuation duct. Furthermore, according to the invention, the exhaust duct preferably constitutes the only element for suspending the hearth.
  • the supply column comprises a supply conduit and insulation means, the insulation means surrounding the supply conduit between each end of the supply column.
  • the insulation means make it possible to maintain the supply conduit at a temperature below a determined threshold. Above this threshold, the combustible fluid could be liable to ignite in the supply pipe.
  • the insulation means comprise at least one heat exchanger which surrounds the supply conduit, the heat exchanger extends at least between each end of the supply column.
  • the insulation means comprise at least two heat exchangers, a first heat exchanger surrounding the supply conduit, while a second heat exchanger surrounds the first heat exchanger, each heat exchanger extends at least between each end from the power column.
  • the two heat exchangers are arranged concentrically. This configuration makes it possible to insulate the first heat exchanger in a homogeneous manner.
  • the insulation means comprise at least one air intake orifice arranged at the level of the hearth, the intake orifice supplying at least one heat exchanger from outside the hearth and generating a flow of air rising to the within the heat exchanger.
  • the heat exchangers are preferably air heat exchangers. This configuration thus generates a double upward flow of fresh air which contributes to maintaining the supply duct at a temperature below a determined threshold.
  • the chimney comprises, on the one hand, a fixing plate securing the supply duct to the support, and on the other hand, a sleeve fixed to the fixing plate, the sleeve encircling the exhaust duct over a determined distance and diffusing heated air.
  • the hearth is rotatably mounted with respect to the exhaust duct and/or to the supply column which extends as far as a bottom of the hearth, the bottom of the hearth lowerly delimiting the hearth .
  • the chimney comprises a plate arranged in the bottom of the hearth, the plate being pivotable with respect to the bottom of the hearth and the supply column is mounted integral with this pivoting plate. This pivoting plate and the bottom are advantageously perforated in order to allow air to be admitted to the supply column.
  • the exhaust duct is integral with the support through its upper portion, the exhaust duct thus acting as a member for suspending the hearth with respect to the support.
  • the present invention relates to a fireplace 1 which comprises a hearth 2 suspended from a support 3.
  • the support 3 can be formed by a wall, a partition, a ceiling, a floor, a ceiling light, etc.
  • a ceiling, a floor, a ceiling light such a fireplace 1 can be positioned close to a wall or in front of a glass wall, or even in the middle of a room.
  • this type of fireplace 1 has a decorative aesthetic appearance and also makes it possible to provide heating for the room in which it is installed.
  • the hearth 2 may have a particular shape.
  • focus 2 is oblate in shape.
  • focus 2 could take on all sorts of three-dimensional geometric shapes such as a quadrangular, spherical, pyramidal, cylindrical shape, etc.
  • the hearth 2 is formed by an enclosure 20.
  • the enclosure 20 comprises a peripheral wall 21 which laterally delimits the hearth 2.
  • the enclosure 20 also comprises a bottom 22 which delimits the hearth 2 below.
  • the chimney 1 being suspended, the bottom 22 of hearth 2 is at a determined distance from the ground.
  • the bottom 22 never touches the floor of the room.
  • the enclosure 20 comprises an upper wall 23 which delimits the hearth 2 from above.
  • the upper wall 23 belongs to an upper part of the hearth 2.
  • the bottom 22 belongs to a lower part of the hearth 2.
  • the peripheral wall 21 is equipped with at least one air inlet 24.
  • the air A from the air inlet serves as oxidizer for combustion.
  • the air inlet is formed by an opening 24 made in the peripheral wall 21.
  • This opening 24 defines the front face of the hearth 2.
  • the opening 24 is gaping.
  • the closing means are preferably openable and reclosable .
  • the closing means can be formed by a pane or a grid.
  • Chimney 1 also includes an exhaust duct 4.
  • exhaust duct 4 is cylindrical.
  • the evacuation duct 4 is made of a non-ductile material which has properties of heat conductivity.
  • the exhaust duct 4 in particular ensures the evacuation of the combustion gases B to the outside of the room.
  • the evacuation duct 4 comprises a lower portion 40 integral with the upper part of the hearth 2.
  • the evacuation duct 4 comprises a slot 41 which communicates with the enclosure 20 at the level of the junction between the exhaust duct 4 and the hearth 2.
  • the combustion gases B escape from the hearth in an upward flow (illustrated in figure 1 And 3 ).
  • the exhaust duct 4 includes an upper portion 42.
  • the upper portion 42 is opposite the lower portion 40.
  • the upper portion 42 is secured to the support 3.
  • the upper portion 42 is secured to the support through a fixing plate 43.
  • the fixing plate 43 is of annular shape. In practice, the fixing plate 43 can be secured mechanically or by welding to the evacuation duct 4.
  • the chimney 1 also comprises a sleeve 44 integral with the fixing plate 43.
  • the sleeve 44 encircles the evacuation duct 4.
  • the sleeve 44 extends over a determined distance from the plate 43 in the direction of the lower portion 40 of the exhaust duct 4.
  • the sleeve 44 comprises a hollow body which extends in an annular fashion between the peripheral wall of the exhaust duct 4 and the outer wall of the sleeve 44.
  • the exhaust duct 4 acts as a suspension element of the hearth 2 with respect to the support 3.
  • the exhaust duct 4 thus extends downwards from the support 3 to the hearth 2.
  • the evacuation duct 4 extends longitudinally between the support 3 and the hearth 2.
  • the evacuation duct 4 does not extend straight.
  • the evacuation duct 4 is extended by an exhaust duct to the outside of the room and/or the building. of the building.
  • the chimney 1 comprises at least one burner 5 of fluid fuel.
  • burner 5 is configured to burn combustible fluid C such as town gas, propane, butane, etc.
  • combustible fluid C such as town gas, propane, butane, etc.
  • ethanol or bioethanol it is also possible to use a burner configured to burn ethanol or bioethanol.
  • the burner 5 is arranged in the hearth 2.
  • the burner 5 is arranged opposite the opening 24.
  • the burner 5 uses the air A coming from the opening 24 as an oxidizer.
  • this configuration makes it possible to diffuse through the opening 24, the flare of the flames produced by the burner 5, within the room where the fireplace 1 is installed.
  • the fireplace 1 comprises a burner 5 curve.
  • the curvature of the burner 5 takes up the curvature of the enclosure 20 and of the opening 24.
  • a burner 5 of combustible fluid C makes it possible to reduce the emissions of fine particles which are linked to the incomplete combustion of the wood. In this sense, the burner 5 of combustible fluid C contributes to overcoming the drawbacks of the wood-burning fireplace that we have explained in the introduction to this document.
  • the chimney 1 comprises a supply column 6.
  • the supply column 6 is in particular configured to supply the burner 5 with combustible fluid.
  • the supply column 6 extends between a first end 60 connected to a source of combustible fluid and a second end 61 connected to at least one burner 5.
  • the source of fluid fuel C is located upstream of the support 3.
  • the fuel source can be formed by a local storage tank such as a gas cylinder.
  • the source of combustible fluid C consists of a public supply network, for example a city gas supply network.
  • the supply column 6 is arranged crossing downwards from the evacuation duct 4. More specifically, the supply column 6 extends at least in part within the opening 41 of the evacuation duct 4. As shown in figures 1 to 3 , the supply column 6 extends along an axis offset radially with respect to the central axis of the evacuation duct 4. Here, the supply column 6 initially extends within the sleeve 44. Secondly, the supply column 6 extends longitudinally from the upper portion 42 towards the lower portion 40 of the evacuation conduit 4. Preferably, the supply column 6 extends beyond the portion lower 40 and opens into the hearth 2. Thirdly, the supply column 6 extends to a plate 25 arranged at the level of the bottom 22 of the hearth 2. At this plate 25, the column of power supply 6 is connected to at least one burner 5.
  • the fact that the supply column 6 extends within the evacuation duct 4 contributes to providing a compact and aesthetic technical solution for supplying the burner 5 with combustible fluid.
  • the supply column 6 comprises a supply conduit 62 which extends from the source of combustible fluid to at least one burner 5.
  • the supply conduit 62 passes successively through the fixing plate 43, the sleeve 44 and the supply column 6 as far as the plate 25.
  • the supply conduit 62 is extended by a supply hose 63 which is connected to at least one burner 5.
  • the combustible fluid travels through the supply column 6 in a downward flow C as far as the burner 5.
  • the supply hose 63 is connected, on the one hand, to the supply pipe 62, and on the other hand, to at least one burner 5 through a sealed mechanical connection.
  • this tight mechanical connection can be achieved by nuts of the cable gland type which ensure that the connections are held in position during the rotation of the hearth 2.
  • the supply conduit 62 may be formed by a cylindrical conduit made of a non-ductile material covered with an insulating polymeric material. As an indication, the supply conduit 62 in a metallic material such as stainless steel or aluminum. The supply conduit 62 can convey combustible gas such as town gas, propane, butane, etc.
  • the supply column 6 comprises insulation means 7.
  • the insulation means 7 surround the supply conduit 62 between each end 60, 61 of the supply column 6.
  • the insulation means 7 make it possible to isolate the supply pipe 62 from the combustion gases B which circulate in the exhaust duct 4 according to an upward flow.
  • the combustion gases B can reach temperatures of between 150°C and 300°C.
  • the combustible fluid is capable of igniting by a simple transfer of the calorific energy of the ascending combustion gases B.
  • the insulation means 7 make it possible to reduce the transfer of heat energy. Indeed, the insulation means 7 maintain the supply conduit 62 at a temperature below a determined threshold temperature. More specifically, the insulation means 7 maintain the supply conduit 62 at a temperature below 60 ° C. Preferably, the insulation means 7 make it possible to maintain the supply conduit 62 at a temperature below 50 0C.
  • the insulation means 7 comprise at least one heat exchanger 70.
  • the heat exchanger 70 surrounds the supply pipe 62.
  • the heat exchanger 70 isolates the supply pipe 62 from the combustion gases B
  • the heat exchanger 70 extends at least between each end 60, 61 of the supply column 6.
  • the heat exchanger 70 extends from the plate 25 located in the hearth 2 to 'to the sleeve 44. In fact, the heat exchanger 70 successively passes through the hearth 2 and the exhaust duct 4.
  • the insulation means 7 comprise at least two heat exchangers 70, 70a, 70b.
  • a first heat exchanger 70a surrounds the supply conduit 62.
  • a second heat exchanger 70b surrounds the first heat exchanger 70a. It should be noted that the peripheral wall of the second heat exchanger 70b laterally delimits the supply column 6 within the hearth 2 but also within the exhaust duct 4.
  • the heat exchangers 70, 70a, 70b are nested one inside the other respectively.
  • the supply conduit 62 is nested in the first heat exchanger 70a. This configuration makes it possible to optimize the insulation of the supply conduit 62.
  • the two heat exchangers 70, 70a, 70b are arranged concentrically.
  • the second heat exchanger 70b makes it possible to cool the first heat exchanger 70a. Therefore, the supply conduit 62 can come into contact with the walls of the first heat exchanger 70a without danger.
  • the supply conduit 62 is formed by a semi-rigid flexible conduit. The concentric arrangement of the heat exchangers ensures homogeneous insulation of the peripheral wall which radially delimits the first heat exchanger 70a.
  • each heat exchanger 70, 70a, 70b is formed by a conduit.
  • This conduit is preferably made of a non-ductile material such as a material metallic.
  • the duct can be made of stainless steel, aluminum etc.
  • each duct can be covered with a high temperature resistant insulating coating.
  • the first heat exchanger 70a can have a cross-section of dimensions at least 1.5 times greater than the dimensions of the cross-section of the supply duct 62.
  • the second heat exchanger 70b can have a cross-section dimensions at least 1.3 times greater than the dimensions of the section of the first heat exchanger 70a.
  • each heat exchanger 70, 70a, 70b is an air type heat exchanger.
  • the insulation means 7 comprise at least one air intake orifice.
  • the air intake orifice is arranged at the level of the hearth 2. More precisely, this air intake orifice is arranged at the level of the plate 25. For these purposes, the platform 25 is perforated.
  • the bottom 22 also comprises at least one air intake orifice 26 which is advantageously arranged along the same axis as the air intake orifice(s) of the insulation means 7.
  • These orifices 26 of air intake supply at least one heat exchanger 70, 70a, 70b from outside the hearth 2. These characteristics contribute to generating an upward air flow D, E within at least one heat exchanger 70, 70a, 70b. This upward flow of air is called “fresh air” since it comes directly from outside the hearth 2.
  • each heat exchanger 70, 70a 70b has an air intake orifice at the level of the plate 25. This configuration generates a double flow of fresh air D, E within the supply column 6. The double flow of fresh air D, E guarantees optimum insulation of the supply duct 62.
  • Table 1 below compares the temperature of the supply conduit 62 measured at several heights, on the one hand, for a first embodiment of the invention called “single flow configuration” in which the supply column 6 is equipped with a single heat exchanger 70, 70a, 70b, and on the other hand, for a second embodiment, called “double flow configuration", in which the supply column 6 comprises two heat exchangers 70, 70a, 70b .
  • the temperature of the supply conduit 62 can vary between 41° C. and 72° C., while the double-flow configuration makes it possible to limit the temperature variation of the supply conduit 62 between 21° C. C and 24°C.
  • the double flow configuration makes it possible to keep the temperature of the supply conduit 62 at more than 30° C. below the threshold of 60° C.
  • the dual-flow configuration makes it possible to reduce, or even eliminate, the risk of ignition of the combustible fluid C by transfer of heat energy from the combustion gases B.
  • At least one heat exchanger 70, 70a, 70b comprises an exhaust orifice 71.
  • This exhaust orifice 71 is open in the exhaust duct 4.
  • the exhaust orifice 71 is arranged close to the first end 60 of the evacuation column 4.
  • the second heat exchanger 70b which comprises an exhaust orifice 71 open at the top portion in the slot 41 of the evacuation duct 4.
  • the fresh air E which enters the second heat exchanger 70b via the air intake orifice, travels the supply column 6 upwards as far as the exhaust orifice 71.
  • the rising air E mixes with the combustion gases B and is then evacuated to the outside through the exhaust duct.
  • each heat exchanger 70, 70a, 70b extends at least between each end 60, 61 of the supply column 6. More specifically, the first heat exchanger 70a extends from the plate 25 into the sleeve 44. On the other hand, the second heat exchanger 70b extends from the plate 25 to the junction between the supply column 6 and the sleeve 44.
  • the first heat exchanger 70a opens into the sleeve 44.
  • the sleeve 44 which includes openings in its peripheral wall.
  • the sleeve 44 diffuses heated air which has previously traveled through the first heat exchanger 70a from the platform 25.
  • this creates a natural air circulation within the first heat exchanger 70a.
  • the fresh air D which enters the first heat exchanger 70a at the level of the air intake orifice. When it enters at the air intake orifice, the fresh air D is at ambient temperature.
  • the fresh air D heats up to be evacuated from the sleeve 44, towards the room, at a temperature comprised between 35°C and 40°C.
  • the diffusion of the heated air at the level of the ceiling of the room contributes to homogeneously distributing the temperature produced by the combustion. This feature improves the thermal comfort of the room in which the chimney 1 is installed.
  • the hearth 2 is rotatably mounted with respect to the exhaust duct 4.
  • the hearth 2 is connected to the exhaust duct via a rotary mechanical connection such as a cylinder/cylinder pivot connection.
  • hearth 2 can also be rotatably mounted relative to supply column 6.
  • plate 25 is pivotally mounted relative to bottom 22 of hearth 2.
  • plate 25 can be engaged in a rotary mechanical linkage.
  • this rotary mechanical connection may be constituted by a ball-bearing turntable, or disc cooperating in a plain bearing, etc. upper portion in the lumen 41 of the exhaust duct 4.
  • the fresh air E which enters the second heat exchanger 70b via the air intake orifice travels the supply column 6 upwards to at the exhaust port 71.
  • the rising air E mixes with the combustion gases B and is then evacuated to the outside through the exhaust duct.
  • each heat exchanger 70, 70a, 70b extends at least between each end 60, 61 of the supply column 6. More specifically, the first heat exchanger 70a extends from the plate 25 into the sleeve 44. On the other hand, the second heat exchanger 70b extends from the plate 25 to the junction between the supply column 6 and the sleeve 44.
  • the first heat exchanger 70a opens into the sleeve 44.
  • the sleeve 44 which includes openings in its peripheral wall.
  • the sleeve 44 diffuses heated air which has previously passed through the first heat exchanger 70a from the platform 25.
  • this creates a natural air circulation within the first heat exchanger 70a.
  • the fresh air D which enters the first heat exchanger 70a at the level of the air intake orifice. When it enters at the air intake orifice, the fresh air D is at ambient temperature.
  • the fresh air D heats up to be evacuated from the sleeve 44, towards the room, at a temperature comprised between 35°C and 40°C.
  • the diffusion of the heated air at the level of the ceiling of the room contributes to homogeneously distributing the temperature produced by the combustion. This feature improves the thermal comfort of the room in which the chimney 1 is installed.
  • the hearth 2 is rotatably mounted with respect to the exhaust duct 4.
  • the hearth 2 is connected to the exhaust duct via a rotary mechanical connection such as a cylinder/cylinder pivot connection.
  • hearth 2 can also be rotatably mounted relative to supply column 6.
  • plate 25 is pivotally mounted relative to bottom 22 of hearth 2.
  • plate 25 can be engaged in a rotary mechanical linkage.
  • this rotary mechanical connection may be constituted by a ball bearing turntable, or disc cooperating in a plain bearing, etc.

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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)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Details (AREA)

Description

La présente invention appartient au domaine de la cheminée, et plus spécifiquement au domaine de la cheminée décorative.The present invention belongs to the field of fireplaces, and more specifically to the field of decorative fireplaces.

En particulier, la présente invention se rapporte à une cheminée comportant un foyer suspendu et dont la combustion est opérée via un fluide combustible.In particular, the present invention relates to a fireplace comprising a suspended hearth and the combustion of which is carried out via a combustible fluid.

Comme cela est reconnu scientifiquement, une cheminée à foyer ouvert présente divers inconvénients, tout d'abord, elle offre un rendement de production d'énergie calorifique faible compris entre et 15 % et 20 %, par ailleurs, un foyer ouvert réalise une combustion incomplète du bois qui conduit à des émissions importantes de particules fines polluantes. Le foyer ouvert favorise une émission de ces particules tant dans le logement que dans l'atmosphère via le conduit d'évacuation. Ces particules fines constituent un risque sanitaire et environnemental important. De surcroît, les cheminées à foyer ouvert augmentent les risques d'incendie du local dans lequel elles sont installées.As is scientifically recognized, an open hearth fireplace has various disadvantages, first of all, it offers a low heat energy production yield of between 15% and 20%, moreover, an open hearth achieves incomplete combustion. wood, which leads to significant emissions of fine polluting particles. The open hearth promotes the emission of these particles both in the dwelling and in the atmosphere via the exhaust duct. These fine particles constitute a significant health and environmental risk. In addition, open fireplaces increase the risk of fire in the premises in which they are installed.

Ces inconvénients ont conduit à des modifications législatives notamment en Europe qui visent à restreindre voir à interdire l'usage de cheminée à foyer ouvert.
Par ailleurs, il est connu du document GB 1382665 A une cheminée comprenant un foyer suspendu à un support, le foyer est délimité latéralement par une paroi périphérique qui est équipée d'au moins une arrivée d'air comburant, un conduit d'évacuation des gaz de combustion, le conduit d'évacuation est solidaire d'un support et comporte, d'une part, une portion inférieure solidaire d'une partie supérieure du foyer, et d'autre part, une portion supérieure opposée à la portion inférieure. La cheminée comprend en outre au moins un brûleur de combustible fluide qui est disposé dans le foyer en vis-à-vis d'au moins une arrivée d'air. De plus, les documents FR 3 013 422 A1 et ES 1 065 510 U divulguent des cheminées à foyer suspendu fonctionnant avec un combustible solide.These drawbacks have led to legislative changes, particularly in Europe, which aim to restrict or even prohibit the use of open fireplaces.
Moreover, it is known from the document GB 1382665A a chimney comprising a hearth suspended from a support, the hearth is delimited laterally by a peripheral wall which is equipped with at least one combustion air inlet, a combustion gas evacuation conduit, the evacuation conduit is integral of a support and comprises, on the one hand, a lower portion integral with an upper part of the hearth, and on the other hand, an upper portion opposite the lower portion. The fireplace further comprises at least one fluid fuel burner which is placed in the hearth facing at least one air inlet. Additionally, the documents FR 3 013 422 A1 And ES 1 065 510 U disclose suspended hearth fireplaces operating with solid fuel.

Les documents EP 1 403 585 A1 et US 2007/044790 A1 divulguent des cheminées avec une alimentation en combustible fluide par le dessous du foyer de combustion.The documents EP 1 403 585 A1 And US 2007/044790 A1 disclose chimneys with a fluid fuel supply from below the combustion chamber.

Enfin le document US 967 089 A divulgue une cheminée avec un alimentation en combustible liquide par le haut du foyer de combustion.Finally the document US 967,089 A discloses a fireplace with a liquid fuel feed from the top of the combustion chamber.

A ce jour, il existe des cheminées décoratives iconiques à foyer suspendu. Ce type de cheminées se compose, d'une part, d'un foyer ouvert qui possède une forme esthétique élégante, et d'autre part, d'un conduit d'évacuation des gaz de combustion relié à une partie supérieure du foyer ouvert. Le conduit d'évacuation fait en outre office d'élément de suspension du foyer par rapport à un support qui est la plupart du temps formé par un plafond.To date, there are iconic decorative fireplaces with a suspended hearth. This type of fireplaces consists, on the one hand, of an open hearth which has an elegant aesthetic shape, and on the other hand, of a combustion gas evacuation pipe connected to an upper part of the open hearth. The exhaust duct also acts as a suspension element of the hearth with respect to a support which is usually formed by a ceiling.

Or, certains modèles de ces cheminées décoratives iconiques présentent un foyer de forme particulière telle qu'une forme oblate. En sus, ces foyers comportent généralement une ouverture qui épouse leur forme et rend par conséquent complexe l'installation d'une vitre afin de transformer ces foyers en foyer fermé ou en insert.However, some models of these iconic decorative fireplaces have a hearth of a particular shape such as an oblate shape. In addition, these hearths generally include an opening which matches their shape and therefore makes it complex to install a window in order to transform these hearths into a closed hearth or an insert.

Au regard de ces problématiques la demanderesse a développé une solution technique qui permet de continuer à produire ou utiliser des cheminées décoratives iconiques tout en palliant les inconvénients des cheminées à foyer ouvert à bois.In view of these problems, the applicant has developed a technical solution which makes it possible to continue to produce or use iconic decorative fireplaces while overcoming the drawbacks of open wood-burning fireplaces.

A cet effet, la présente invention concerne une cheminée comprenant :

  • . un foyer suspendu à un support, le foyer est délimité latéralement par une paroi périphérique qui est équipée d'au moins une arrivée d'air comburant, et
  • . un conduit d'évacuation des gaz de combustion, le conduit d'évacuation est solidaire dudit support et comporte, d'une part, une portion inférieure solidaire d'une partie supérieure du foyer, et d'autre part, une portion supérieure opposée à la portion inférieure.
  • au moins un brûleur de combustible fluide qui est disposé dans le foyer en vis-à-vis de ladite au moins une arrivée d'air.
To this end, the present invention relates to a chimney comprising:
  • . a hearth suspended from a support, the hearth is delimited laterally by a peripheral wall which is equipped with at least one combustion air inlet, and
  • . a combustion gas evacuation conduit, the evacuation conduit is integral with said support and comprises, on the one hand, a lower portion integral with an upper part of the hearth, and on the other hand, an upper portion opposite to the lower portion.
  • at least one fluid fuel burner which is arranged in the hearth facing said at least one air inlet.

La cheminée selon l'invention se caractérise en ce qu'elle comprend :

  • une colonne d'alimentation en fluide combustible qui s'étend entre une première extrémité connectée à une source de fluide combustible et une seconde extrémité connectée audit au moins un brûleur, la colonne d'alimentation traversant de façon descendante le conduit d'évacuation depuis sa portion supérieure vers sa portion inférieure et débouchant dans le foyer afin de véhiculer le fluide combustible depuis la source de fluide combustible vers ledit au moins un brûleur.
The fireplace according to the invention is characterized in that it comprises:
  • a combustible fluid supply column which extends between a first end connected to a source of combustible fluid and a second end connected to said at least one burner, the supply column passing downwardly through the exhaust conduit from its upper portion towards its lower portion and opening into the hearth in order to convey the combustible fluid from the source of combustible fluid to said at least one burner.

L'utilisation d'un brûleur à fluide combustible ne produit pas de particules fines dues à la combustion incomplète d'un combustible solide. En ce sens, convertir une cheminée à bois en cheminée à combustible fluide permet de pallier les inconvénients sanitaires et énergétiques du foyer ouvert à bois. Par ailleurs, afin de conserver l'esthétique de modèles iconiques, la colonne d'alimentation en fluide combustible est au moins partiellement intégrée au conduit d'évacuation. En outre, selon l'invention, le conduit d'évacuation constitue, de préférence, le seul élément de suspension du foyer.The use of a combustible fluid burner does not produce fine particles due to the incomplete combustion of a solid fuel. In this sense, converting a wood-burning fireplace into a fluid fuel fireplace makes it possible to overcome the health and energy disadvantages of the open wood-burning fireplace. Furthermore, in order to preserve the aesthetics of iconic models, the combustible fluid supply column is at least partially integrated into the evacuation duct. Furthermore, according to the invention, the exhaust duct preferably constitutes the only element for suspending the hearth.

Selon une première caractéristique de l'invention, la colonne d'alimentation comprend un conduit d'alimentation et des moyens d'isolation, les moyens d'isolation ceinturant le conduit d'alimentation entre chaque extrémité de la colonne d'alimentation. Les moyens d'isolation permettent de maintenir le conduit d'alimentation à une température inférieure à un seuil déterminé. Au-dessus de ce seuil, le fluide combustible pourrait être susceptible de s'enflammer dans le conduit d'alimentation.According to a first characteristic of the invention, the supply column comprises a supply conduit and insulation means, the insulation means surrounding the supply conduit between each end of the supply column. The insulation means make it possible to maintain the supply conduit at a temperature below a determined threshold. Above this threshold, the combustible fluid could be liable to ignite in the supply pipe.

En particulier, les moyens d'isolation comportent au moins un échangeur thermique qui ceinture le conduit d'alimentation, l'échangeur thermique s'étend au moins entre chaque extrémité de la colonne d'alimentation. De préférence, les moyens d'isolation comportent au moins deux échangeurs thermiques, un premier échangeur thermique ceinturant le conduit d'alimentation, alors qu'un second échangeur thermique ceinture le premier échangeur thermique, chaque échangeur thermique s'étend au moins entre chaque extrémité de la colonne d'alimentation.In particular, the insulation means comprise at least one heat exchanger which surrounds the supply conduit, the heat exchanger extends at least between each end of the supply column. Preferably, the insulation means comprise at least two heat exchangers, a first heat exchanger surrounding the supply conduit, while a second heat exchanger surrounds the first heat exchanger, each heat exchanger extends at least between each end from the power column.

Selon l'invention, les deux échangeurs thermiques sont disposés de manière concentrique. Cette configuration permet d'isoler le premier échangeur thermique de manière homogène.According to the invention, the two heat exchangers are arranged concentrically. This configuration makes it possible to insulate the first heat exchanger in a homogeneous manner.

Par ailleurs, les moyens d'isolation comportent au moins un orifice de prise d'air disposé au niveau du foyer, l'orifice de prise alimentant au moins un échangeur thermique depuis l'extérieur du foyer et générant un flux d'air ascendant au sein de l'échangeur thermique.Furthermore, the insulation means comprise at least one air intake orifice arranged at the level of the hearth, the intake orifice supplying at least one heat exchanger from outside the hearth and generating a flow of air rising to the within the heat exchanger.

Les échangeurs thermiques sont, de préférence, des échangeurs thermiques à air. Cette configuration génère ainsi, un double flux d'air frais ascendant qui contribue à maintenir le conduit d'alimentation à une température inférieure à un seuil déterminé.The heat exchangers are preferably air heat exchangers. This configuration thus generates a double upward flow of fresh air which contributes to maintaining the supply duct at a temperature below a determined threshold.

Selon une deuxième caractéristique de l'invention, la cheminée comporte, d'une part, une platine de fixation solidarisant le conduit d'alimentation au support, et d'autre part, un manchon solidaire de la platine de fixation, le manchon ceinturant le conduit d'évacuation sur une distance déterminée et diffusant de l'air réchauffé.According to a second characteristic of the invention, the chimney comprises, on the one hand, a fixing plate securing the supply duct to the support, and on the other hand, a sleeve fixed to the fixing plate, the sleeve encircling the exhaust duct over a determined distance and diffusing heated air.

Selon une troisième caractéristique de l'invention, le foyer est monté rotatif par rapport au conduit d'évacuation et/ou à la colonne d'alimentation qui s'étend jusqu'à un fond du foyer, le fond du foyer délimitant inférieurement le foyer. A ces fins, la cheminée comprend une platine disposée dans le fond du foyer, la platine étant pivotante par rapport au fond du foyer et la colonne d'alimentation est montée solidaire de cette platine pivotante. Cette platine pivotante et le fond sont avantageusement ajourés afin de permettre une admission d'air vers la colonne d'alimentation.According to a third feature of the invention, the hearth is rotatably mounted with respect to the exhaust duct and/or to the supply column which extends as far as a bottom of the hearth, the bottom of the hearth lowerly delimiting the hearth . For these purposes, the chimney comprises a plate arranged in the bottom of the hearth, the plate being pivotable with respect to the bottom of the hearth and the supply column is mounted integral with this pivoting plate. This pivoting plate and the bottom are advantageously perforated in order to allow air to be admitted to the supply column.

Selon une quatrième caractéristique de l'invention, le conduit d'évacuation est solidaire du support au travers de sa portion supérieure, le conduit d'évacuation faisant ainsi office d'élément de suspension du foyer par rapport au support.According to a fourth feature of the invention, the exhaust duct is integral with the support through its upper portion, the exhaust duct thus acting as a member for suspending the hearth with respect to the support.

D'autres particularités et avantages apparaîtront dans la description détaillée qui suit, d'un exemple de réalisation, non limitatif, de l'invention illustré par les figures 1 à 3 placées en annexe et dans lesquelles:

  • [Fig. 1] est une représentation schématique d'une coupe longitudinale d'une cheminée à foyer suspendu conforme à un exemple de réalisation de l'invention.
  • [Fig. 2] est une représentation schématique d'une coupe transversale A-A du conduit d'évacuation de la cheminée à foyer suspendu de la figure 1.
  • [Fig. 3] est une représentation schématique selon une coupe longitudinale d'une portion supérieure du conduit d'évacuation d'une cheminée de la figure 1, les différents flux de gaz étant représentés.
  • [Fig. 4] est une représentation en perspective d'une cheminée à foyer suspendu conforme à un mode de réalisation de l'invention.
  • [Fig. 5] est une représentation d'une platine de fixation de la cheminée de la figure 4.
  • [Fig. 6] est une représentation du foyer de la cheminée de la figure 4.
Other particularities and advantages will appear in the detailed description which follows, of a non-limiting embodiment of the invention illustrated by the figures 1 to 3 placed in the appendix and in which:
  • [ Fig. 1 ] is a schematic representation of a longitudinal section of a fireplace with a suspended hearth according to an embodiment of the invention.
  • [ Fig. 2 ] is a schematic representation of a cross-section AA of the exhaust pipe of the suspended hearth fireplace of the figure 1 .
  • [ Fig. 3 ] is a schematic representation according to a longitudinal section of an upper portion of the exhaust duct of a chimney of the figure 1 , the different gas flows being represented.
  • [ Fig. 4 ] is a perspective representation of a suspended hearth fireplace according to one embodiment of the invention.
  • [ Fig. 5 ] is a representation of a fixing plate for the chimney of the figure 4 .
  • [ Fig. 6 ] is a representation of the hearth of the chimney of the figure 4 .

Comme illustré aux figures 1 à 6, la présente invention concerne une cheminée 1 qui comprend un foyer 2 suspendu à un support 3. De manière générale, le support 3 peut être formé par un mur, une cloison, un plafond, un plancher, un plafonnier etc. Dans le cas d'un plafond, un plancher, un plafonnier, une telle cheminée 1 peut être positionnée à proximité d'un mur ou devant une paroi vitrée, ou encore au milieu d'un local. Ainsi, ce type de cheminée 1 présente un aspect esthétique décoratif et permet également de fournir un chauffage du local dans lequel elle est installée.As shown in figures 1 to 6 , the present invention relates to a fireplace 1 which comprises a hearth 2 suspended from a support 3. In general, the support 3 can be formed by a wall, a partition, a ceiling, a floor, a ceiling light, etc. In the case of a ceiling, a floor, a ceiling light, such a fireplace 1 can be positioned close to a wall or in front of a glass wall, or even in the middle of a room. Thus, this type of fireplace 1 has a decorative aesthetic appearance and also makes it possible to provide heating for the room in which it is installed.

En vue d'exercer une fonction décorative, le foyer 2 peut posséder une forme particulière. Dans l'exemple des figures 1, 3 et 6, le foyer 2 est de forme oblate. Toutefois, le foyer 2 pourrait prendre toutes sortes de formes géométriques tridimensionnelles telles qu'une forme quadrangulaire, sphérique, pyramidale, cylindrique etc.In order to perform a decorative function, the hearth 2 may have a particular shape. In the example of figure 1 , 3 And 6 , focus 2 is oblate in shape. However, focus 2 could take on all sorts of three-dimensional geometric shapes such as a quadrangular, spherical, pyramidal, cylindrical shape, etc.

Dans l'exemple illustré à la figure 1, le foyer 2 est formé par une enceinte 20. L'enceinte 20 comprend une paroi périphérique 21 qui délimite latéralement le foyer 2. L'enceinte 20 comprend également un fond 22 qui délimite inférieurement le foyer 2. La cheminée 1 étant suspendue, le fond 22 du foyer 2 se trouve à une distance déterminée du sol. De préférence, le fond 22 ne touche jamais le sol du local. Enfin, l'enceinte 20 comprend une paroi supérieure 23 qui délimite supérieurement le foyer 2. La paroi supérieure 23 appartient à une partie supérieure du foyer 2. En parallèle, le fond 22 appartient à une partie inférieure du foyer 2.In the example shown in figure 1 , the hearth 2 is formed by an enclosure 20. The enclosure 20 comprises a peripheral wall 21 which laterally delimits the hearth 2. The enclosure 20 also comprises a bottom 22 which delimits the hearth 2 below. The chimney 1 being suspended, the bottom 22 of hearth 2 is at a determined distance from the ground. Preferably, the bottom 22 never touches the floor of the room. Finally, the enclosure 20 comprises an upper wall 23 which delimits the hearth 2 from above. The upper wall 23 belongs to an upper part of the hearth 2. In parallel, the bottom 22 belongs to a lower part of the hearth 2.

La paroi périphérique 21 est équipée d'au moins une arrivée d'air 24. L'air A issu de l'arrivée d'air sert de comburant à la combustion. Dans cet exemple, l'arrivée d'air est formée par une ouverture 24 ménagée dans la paroi périphérique 21. Cette ouverture 24 définit la face avant du foyer 2. Ici, l'ouverture 24 est béante. Cependant, selon une variante non illustrée de l'invention, il est possible de prévoir au niveau de cette ouverture 24 des moyens de fermeture partiels ou complets afin de restreindre l'accès au foyer 2. Les moyens de fermeture sont de préférence ouvrables et refermables. A titre indicatif, les moyens de fermeture peuvent être formés par une vitre ou une grille.The peripheral wall 21 is equipped with at least one air inlet 24. The air A from the air inlet serves as oxidizer for combustion. In this example, the air inlet is formed by an opening 24 made in the peripheral wall 21. This opening 24 defines the front face of the hearth 2. Here, the opening 24 is gaping. However, according to a non-illustrated variant of the invention, it is possible to provide at the level of this opening 24 partial or complete closing means in order to restrict access to the hearth 2. The closing means are preferably openable and reclosable . As an indication, the closing means can be formed by a pane or a grid.

La cheminée 1 comprend également un conduit d'évacuation 4. Dans cet exemple, le conduit d'évacuation 4 est cylindrique. De préférence, le conduit d'évacuation 4 est réalisé dans un matériau non ductile qui comporte des propriétés de conductivité de la chaleur. A titre indicatif, il est possible de réaliser le conduit d'évacuation 4 dans un métal ou alliage métallique tel que l'acier, la fonte etc.Chimney 1 also includes an exhaust duct 4. In this example, exhaust duct 4 is cylindrical. Preferably, the evacuation duct 4 is made of a non-ductile material which has properties of heat conductivity. As an indication, it is possible to make the evacuation duct 4 in a metal or metal alloy such as steel, cast iron, etc.

Le conduit d'évacuation 4 assure notamment l'évacuation des gaz de combustion B vers l'extérieur du local. A cet effet, le conduit d'évacuation 4 comporte une portion inférieure 40 solidaire de la partie supérieure du foyer 2. Bien entendu, le conduit d'évacuation 4 comprend une lumière 41 qui communique avec l'enceinte 20 au niveau de la jonction entre le conduit d'évacuation 4 et le foyer 2. Les gaz de combustion B s'échappent du foyer selon un flux ascendant (illustré aux figures 1 et 3).The exhaust duct 4 in particular ensures the evacuation of the combustion gases B to the outside of the room. For this purpose, the evacuation duct 4 comprises a lower portion 40 integral with the upper part of the hearth 2. Of course, the evacuation duct 4 comprises a slot 41 which communicates with the enclosure 20 at the level of the junction between the exhaust duct 4 and the hearth 2. The combustion gases B escape from the hearth in an upward flow (illustrated in figure 1 And 3 ).

De plus, le conduit d'évacuation 4 comprend une portion supérieure 42. La portion supérieure 42 est opposée à la portion inférieure 40. La portion supérieure 42 est solidaire du support 3. Dans cet exemple, la portion supérieure 42 est solidaire du support au travers d'une platine de fixation 43. Dans l'exemple illustré aux figures 4 et 5, la platine de fixation 43 est de forme annulaire. En pratique, la platine de fixation 43 peut être solidarisée mécaniquement ou par soudure au conduit d'évacuation 4.In addition, the exhaust duct 4 includes an upper portion 42. The upper portion 42 is opposite the lower portion 40. The upper portion 42 is secured to the support 3. In this example, the upper portion 42 is secured to the support through a fixing plate 43. In the example illustrated in figures 4 and 5 , the fixing plate 43 is of annular shape. In practice, the fixing plate 43 can be secured mechanically or by welding to the evacuation duct 4.

Comme illustré aux figures 4 et 5, la cheminée 1 comprend également un manchon 44 solidaire de la platine de fixation 43. Le manchon 44 ceinture le conduit d'évacuation 4. Ici, le manchon 44 s'étend sur une distance déterminée depuis la platine 43 en direction de la portion inférieure 40 du conduit d'évacuation 4. De préférence, le manchon 44 comporte un corps creux qui s'étend de façon annulaire entre la paroi périphérique du conduit d'évacuation 4 et la paroi extérieure du manchon 44.As shown in figures 4 and 5 , the chimney 1 also comprises a sleeve 44 integral with the fixing plate 43. The sleeve 44 encircles the evacuation duct 4. Here, the sleeve 44 extends over a determined distance from the plate 43 in the direction of the lower portion 40 of the exhaust duct 4. Preferably, the sleeve 44 comprises a hollow body which extends in an annular fashion between the peripheral wall of the exhaust duct 4 and the outer wall of the sleeve 44.

Selon l'exemple décrit aux figures 1 à 6, le conduit d'évacuation 4 fait office d'élément de suspension du foyer 2 par rapport au support 3. Le conduit d'évacuation 4 s'étend ainsi de façon descendante depuis le support 3 jusqu'au foyer 2. De préférence, le conduit d'évacuation 4 s'étend longitudinalement entre le support 3 et le foyer 2. Cependant, selon le modèle de cheminée 1 et/ou le type d'installation, il est possible que le conduit d'évacuation 4 ne s'étende pas de façon rectiligne.According to the example described in figures 1 to 6 , the exhaust duct 4 acts as a suspension element of the hearth 2 with respect to the support 3. The exhaust duct 4 thus extends downwards from the support 3 to the hearth 2. Preferably, the evacuation duct 4 extends longitudinally between the support 3 and the hearth 2. However, depending on the chimney model 1 and/or the type of installation, it is possible that the evacuation duct 4 does not extend straight.

Par ailleurs, afin d'évacuer, les gaz de combustion B à l'extérieur du local et/ou du bâtiment, le conduit d'évacuation 4 est prolongé par un conduit d'échappement jusqu'à l'extérieur du local et/ou du bâtiment.Furthermore, in order to evacuate the combustion gases B outside the room and/or the building, the evacuation duct 4 is extended by an exhaust duct to the outside of the room and/or the building. of the building.

La cheminée 1 comprend au moins un brûleur 5 de combustible fluide. De préférence, le brûleur 5 est configuré pour brûler du fluide combustible C tel que le gaz de ville, le propane, le butane etc. Toutefois, il est également possible d'utiliser un brûleur configuré pour brûler de l'éthanol ou du bioéthanol. Dans cet exemple, le brûleur 5 est disposé dans le foyer 2. En particulier, le brûleur 5 est disposé en vis-à-vis de l'ouverture 24. Ainsi, le brûleur 5 utilise l'air A issu de l'ouverture 24 comme comburant. De surcroît, cette configuration permet de diffuser au travers de l'ouverture 24, le flamboiement des flammes produites par le brûleur 5, au sein du local où est installé la cheminée 1.The chimney 1 comprises at least one burner 5 of fluid fuel. Preferably, burner 5 is configured to burn combustible fluid C such as town gas, propane, butane, etc. However, it is also possible to use a burner configured to burn ethanol or bioethanol. In this example, the burner 5 is arranged in the hearth 2. In particular, the burner 5 is arranged opposite the opening 24. Thus, the burner 5 uses the air A coming from the opening 24 as an oxidizer. In addition, this configuration makes it possible to diffuse through the opening 24, the flare of the flames produced by the burner 5, within the room where the fireplace 1 is installed.

Dans l'exemple de la figure 6, la cheminée 1 comprend un brûleur 5 courbe. Ici, la courbure du brûleur 5 reprend la courbure de l'enceinte 20 et de l'ouverture 24.In the example of the figure 6 , the fireplace 1 comprises a burner 5 curve. Here, the curvature of the burner 5 takes up the curvature of the enclosure 20 and of the opening 24.

L'utilisation d'un brûleur 5 de fluide combustible C permet de réduire les émissions de particules fines qui sont liées à la combustion incomplète du bois. En ce sens, le brûleur 5 de fluide combustible C, contribue à pallier les inconvénients de la cheminée à bois que nous avons exposés dans l'introduction de ce document.The use of a burner 5 of combustible fluid C makes it possible to reduce the emissions of fine particles which are linked to the incomplete combustion of the wood. In this sense, the burner 5 of combustible fluid C contributes to overcoming the drawbacks of the wood-burning fireplace that we have explained in the introduction to this document.

Comme illustré aux figures 1 à 3, la cheminée 1 comprend une colonne d'alimentation 6. La colonne d'alimentation 6 est notamment configurée pour alimenter le brûleur 5 en fluide combustible. A cet effet, la colonne d'alimentation 6 s'étend entre une première extrémité 60 connectée à une source de fluide combustible et une seconde extrémité 61 connectée à au moins un brûleur 5. Ici, la source de fluide combustible C se situe en amont du support 3. La source de combustible peut être formée par une cuve de stockage local telle qu'une bonbonne de gaz. Cependant, de préférence, la source de fluide combustible C est constituée par un réseau d'alimentation public par exemple un réseau d'alimentation de gaz de ville.As shown in figures 1 to 3 , the chimney 1 comprises a supply column 6. The supply column 6 is in particular configured to supply the burner 5 with combustible fluid. To this end, the supply column 6 extends between a first end 60 connected to a source of combustible fluid and a second end 61 connected to at least one burner 5. Here, the source of fluid fuel C is located upstream of the support 3. The fuel source can be formed by a local storage tank such as a gas cylinder. However, preferably, the source of combustible fluid C consists of a public supply network, for example a city gas supply network.

Dans cet exemple, la colonne d'alimentation 6 est disposée traversante de façon descendante du conduit d'évacuation 4. Plus précisément, la colonne d'alimentation 6 s'étend au moins en partie au sein de la lumière 41 du conduit d'évacuation 4. Comme cela est illustré aux figures 1 à 3, la colonne d'alimentation 6 s'étend selon un axe décalé radialement par rapport à l'axe central du conduit d'évacuation 4. Ici, la colonne d'alimentation 6 s'étend dans un premier temps au sein du manchon 44. Dans un second temps, la colonne d'alimentation 6 s'étend longitudinalement depuis la portion supérieure 42 vers la portion inférieure 40 du conduit d'évacuation 4. De préférence, la colonne d'alimentation 6 s'étend au-delà de la portion inférieure 40 et débouche dans le foyer 2. Dans un troisième temps, la colonne d'alimentation 6 s'étend jusqu'à une platine 25 disposée au niveau du fond 22 du foyer 2. Au niveau de cette platine 25, la colonne d'alimentation 6 est connectée à au moins un brûleur 5.In this example, the supply column 6 is arranged crossing downwards from the evacuation duct 4. More specifically, the supply column 6 extends at least in part within the opening 41 of the evacuation duct 4. As shown in figures 1 to 3 , the supply column 6 extends along an axis offset radially with respect to the central axis of the evacuation duct 4. Here, the supply column 6 initially extends within the sleeve 44. Secondly, the supply column 6 extends longitudinally from the upper portion 42 towards the lower portion 40 of the evacuation conduit 4. Preferably, the supply column 6 extends beyond the portion lower 40 and opens into the hearth 2. Thirdly, the supply column 6 extends to a plate 25 arranged at the level of the bottom 22 of the hearth 2. At this plate 25, the column of power supply 6 is connected to at least one burner 5.

Avantageusement, le fait que la colonne d'alimentation 6 s'étende au sein du conduit d'évacuation 4 participe à fournir une solution technique compacte et esthétique d'alimentation du brûleur 5 en fluide combustible.Advantageously, the fact that the supply column 6 extends within the evacuation duct 4 contributes to providing a compact and aesthetic technical solution for supplying the burner 5 with combustible fluid.

Dans l'exemple illustré aux figures 1 à 3, la colonne d'alimentation 6 comprend un conduit d'alimentation 62 qui s'étend depuis la source de fluide combustible vers au moins un brûleur 5. En particulier, le conduit d'alimentation 62 traverse successivement la platine de fixation 43, le manchon 44 et la colonne d'alimentation 6 jusqu'à la platine 25. Au niveau de la platine 25, le conduit d'alimentation 62 est prolongé par un flexible d'alimentation 63 qui est connecté à au moins un brûleur 5. Ainsi, le fluide combustible parcourt la colonne d'alimentation 6 selon un flux descendant C jusqu'au brûleur 5. Par ailleurs, le flexible d'alimentation 63 est connecté, d'une part, au conduit d'alimentation 62, et d'autre part, à au moins un brûleur 5 au travers d'une liaison mécanique étanche. A titre indicatif, cette liaison mécanique étanche peut être réalisée par des écrous de type presse étoupes qui assurent le maintien en position des raccords pendant la rotation du foyer 2.In the example shown in figures 1 to 3 , the supply column 6 comprises a supply conduit 62 which extends from the source of combustible fluid to at least one burner 5. In particular, the supply conduit 62 passes successively through the fixing plate 43, the sleeve 44 and the supply column 6 as far as the plate 25. At the level of the plate 25, the supply conduit 62 is extended by a supply hose 63 which is connected to at least one burner 5. Thus, the combustible fluid travels through the supply column 6 in a downward flow C as far as the burner 5. Furthermore, the supply hose 63 is connected, on the one hand, to the supply pipe 62, and on the other hand, to at least one burner 5 through a sealed mechanical connection. As an indication, this tight mechanical connection can be achieved by nuts of the cable gland type which ensure that the connections are held in position during the rotation of the hearth 2.

Le conduit d'alimentation 62 peut être formé par un conduit cylindrique réalisé dans un matériau non ductile recouvert d'un matériau polymérique isolant. A titre indicatif, le conduit d'alimentation 62 dans un matériau métallique tel que l'inox ou l'aluminium. Le conduit d'alimentation 62 peut véhiculer du gaz combustible tel que du gaz de ville, du propane, du butane etc.The supply conduit 62 may be formed by a cylindrical conduit made of a non-ductile material covered with an insulating polymeric material. As an indication, the supply conduit 62 in a metallic material such as stainless steel or aluminum. The supply conduit 62 can convey combustible gas such as town gas, propane, butane, etc.

Avantageusement, la colonne d'alimentation 6 comprend des moyens d'isolation 7. Ici, les moyens d'isolation 7 ceinturent le conduit d'alimentation 62 entre chaque extrémité 60, 61 de la colonne d'alimentation 6. En ce sens, les moyens d'isolation 7 permettent d'isoler le conduit d'alimentation 62 des gaz de combustion B qui circulent dans le conduit d'évacuation 4 selon un flux ascendant. En effet, de manière générale, les gaz de combustion B peuvent atteindre des températures comprises entre 150 °c et 300 °c.Advantageously, the supply column 6 comprises insulation means 7. Here, the insulation means 7 surround the supply conduit 62 between each end 60, 61 of the supply column 6. In this sense, the insulation means 7 make it possible to isolate the supply pipe 62 from the combustion gases B which circulate in the exhaust duct 4 according to an upward flow. Indeed, in general, the combustion gases B can reach temperatures of between 150°C and 300°C.

Or, à une telle température, le fluide combustible est susceptible de s'enflammer par un simple transfert de l'énergie calorifique des gaz de combustion B ascendants. Toutefois, les moyens d'isolation 7 permettent de réduire le transfert d'énergie calorifique. En effet, les moyens d'isolation 7 assurent le maintien du conduit d'alimentation 62 à une température inférieure à une température seuil déterminée. Plus précisément, les moyens d'isolation 7 assurent le maintien du conduit d'alimentation 62 à une température inférieure à 60 0 C. De préférence, les moyens d'isolation 7 permettent de maintenir le conduit d'alimentation 62 à une température inférieure à 50 0 C.However, at such a temperature, the combustible fluid is capable of igniting by a simple transfer of the calorific energy of the ascending combustion gases B. However, the insulation means 7 make it possible to reduce the transfer of heat energy. Indeed, the insulation means 7 maintain the supply conduit 62 at a temperature below a determined threshold temperature. More specifically, the insulation means 7 maintain the supply conduit 62 at a temperature below 60 ° C. Preferably, the insulation means 7 make it possible to maintain the supply conduit 62 at a temperature below 50 0C.

Dans cette optique, les moyens d'isolation 7 comportent au moins un échangeur thermique 70. L'échangeur thermique 70 ceinture le conduit d'alimentation 62. Ainsi, l'échangeur thermique 70 isole le conduit d'alimentation 62 des gaz de combustion B. Dans cet exemple, l'échangeur thermique 70 s'étend au moins entre chaque extrémité 60, 61 de la colonne d'alimentation 6. En pratique, l'échangeur thermique 70 s'étend depuis la platine 25 située dans le foyer 2 jusqu'au manchon 44. De fait, l'échangeur thermique 70 traverse successivement le foyer 2 et le conduit d'évacuation 4.With this in mind, the insulation means 7 comprise at least one heat exchanger 70. The heat exchanger 70 surrounds the supply pipe 62. Thus, the heat exchanger 70 isolates the supply pipe 62 from the combustion gases B In this example, the heat exchanger 70 extends at least between each end 60, 61 of the supply column 6. In practice, the heat exchanger 70 extends from the plate 25 located in the hearth 2 to 'to the sleeve 44. In fact, the heat exchanger 70 successively passes through the hearth 2 and the exhaust duct 4.

De préférence, comme cela est illustré aux figures 1 à 3, les moyens d'isolation 7 comportent au moins deux échangeurs thermiques 70, 70a, 70b. Selon cette configuration avantageuse, un premier échangeur thermique 70a ceinture le conduit d'alimentation 62. En parallèle, un second échangeur thermique 70b ceinture le premier échangeur thermique 70a. Il est à noter que la paroi périphérique du second échangeur thermique 70b délimite latéralement la colonne d'alimentation 6 au sein du foyer 2 mais aussi au sein du conduit d'évacuation 4.Preferably, as illustrated in figures 1 to 3 , the insulation means 7 comprise at least two heat exchangers 70, 70a, 70b. According to this advantageous configuration, a first heat exchanger 70a surrounds the supply conduit 62. In parallel, a second heat exchanger 70b surrounds the first heat exchanger 70a. It should be noted that the peripheral wall of the second heat exchanger 70b laterally delimits the supply column 6 within the hearth 2 but also within the exhaust duct 4.

Les échangeurs thermiques 70, 70a, 70b sont respectivement imbriqués l'un dans l'autre. De surcroît, le conduit d'alimentation 62 est imbriqué dans le premier échangeur thermique 70a. Cette configuration, permet d'optimiser l'isolation du conduit d'alimentation 62.The heat exchangers 70, 70a, 70b are nested one inside the other respectively. In addition, the supply conduit 62 is nested in the first heat exchanger 70a. This configuration makes it possible to optimize the insulation of the supply conduit 62.

En sus, dans l'exemple illustré à la figure 2, les deux échangeurs thermiques 70, 70a, 70b sont disposés de manière concentrique. Avantageusement, le second échangeur thermique 70b permet de refroidir le premier échangeur thermique 70a. Dès lors, le conduit d'alimentation 62 peut entrer en contact avec les parois du premier échangeur thermique 70a sans danger. Dans cet exemple, le conduit d'alimentation 62 est formé par un conduit flexible semi-rigide. L'agencement concentrique des échangeurs thermiques assure une isolation homogène de la paroi périphérique qui délimite radialement le premier échangeur thermique 70a.In addition, in the example illustrated in picture 2 , the two heat exchangers 70, 70a, 70b are arranged concentrically. Advantageously, the second heat exchanger 70b makes it possible to cool the first heat exchanger 70a. Therefore, the supply conduit 62 can come into contact with the walls of the first heat exchanger 70a without danger. In this example, the supply conduit 62 is formed by a semi-rigid flexible conduit. The concentric arrangement of the heat exchangers ensures homogeneous insulation of the peripheral wall which radially delimits the first heat exchanger 70a.

Dans cet exemple, chaque échangeur thermique 70, 70a, 70b est formé par un conduit. Ce conduit est réalisé de préférence dans un matériau non ductile tel qu'un matériau métallique. A titre indicatif, le conduit peut être réalisé en inox, en aluminium etc. De plus, chaque conduit peut être recouvert d'un revêtement isolant résistant à haute température. A titre indicatif, il est possible d'utiliser, à cet effet, un matériau de type nappe-céramique, fibre de verre, microtherm, élastomère etc.In this example, each heat exchanger 70, 70a, 70b is formed by a conduit. This conduit is preferably made of a non-ductile material such as a material metallic. As an indication, the duct can be made of stainless steel, aluminum etc. In addition, each duct can be covered with a high temperature resistant insulating coating. As an indication, it is possible to use, for this purpose, a material of the sheet-ceramic type, fiberglass, microtherm, elastomer, etc.

A titre d'exemple, le premier échangeur thermique 70a peut présenter une section de dimensions au moins 1,5 fois supérieures aux dimensions de la section du conduit d'alimentation 62. Dans le même temps, le second échangeur thermique 70b peut posséder une section de dimensions au moins 1,3 fois supérieures aux dimensions de la section du premier échangeur thermique 70a.By way of example, the first heat exchanger 70a can have a cross-section of dimensions at least 1.5 times greater than the dimensions of the cross-section of the supply duct 62. At the same time, the second heat exchanger 70b can have a cross-section dimensions at least 1.3 times greater than the dimensions of the section of the first heat exchanger 70a.

Dans l'exemple illustré aux figures 1 à 3, chaque échangeur thermique 70, 70a, 70b est un échangeur thermique de type à air. Dans ce contexte, les moyens d'isolation 7 comportent au moins un orifice de prise d'air. Selon cet exemple, l'orifice de prise d'air est disposé au niveau du foyer 2. Plus précisément, cet orifice de prise d'air est disposé au niveau de la platine 25. A ces fins, la plateforme 25 est ajourée.In the example shown in figures 1 to 3 , each heat exchanger 70, 70a, 70b is an air type heat exchanger. In this context, the insulation means 7 comprise at least one air intake orifice. According to this example, the air intake orifice is arranged at the level of the hearth 2. More precisely, this air intake orifice is arranged at the level of the plate 25. For these purposes, the platform 25 is perforated.

De même, le fond 22 comprend également au moins un orifice de prise d'air 26 qui est avantageusement ménagé selon un même axe que le ou les orifice(s) de prise d'air des moyens d'isolation 7. Ces orifices 26 de prise d'air alimentent au moins un échangeur thermique 70, 70a, 70b depuis l'extérieur du foyer 2. Ces caractéristiques contribuent à générer un flux d'air ascendant D, E au sein d'au moins un échangeur thermique 70, 70a, 70b. Ce flux d'air ascendant est dit « air frais » puisqu'il provient directement de l'extérieur du foyer 2. En pratique chaque échangeur thermique 70, 70a 70b présente un orifice de prise d'air au niveau de la platine 25. Cette configuration génère un double flux d'air frais D, E au sein de la colonne d'alimentation 6. Le double flux d'air frais D, E permet de garantir une isolation optimale du conduit d'alimentation 62.Similarly, the bottom 22 also comprises at least one air intake orifice 26 which is advantageously arranged along the same axis as the air intake orifice(s) of the insulation means 7. These orifices 26 of air intake supply at least one heat exchanger 70, 70a, 70b from outside the hearth 2. These characteristics contribute to generating an upward air flow D, E within at least one heat exchanger 70, 70a, 70b. This upward flow of air is called "fresh air" since it comes directly from outside the hearth 2. In practice, each heat exchanger 70, 70a 70b has an air intake orifice at the level of the plate 25. This configuration generates a double flow of fresh air D, E within the supply column 6. The double flow of fresh air D, E guarantees optimum insulation of the supply duct 62.

Le tableau 1 ci-dessous compare la température du conduit d'alimentation 62 mesurée à plusieurs hauteurs, d'une part, pour un premier mode de réalisation de l'invention dit « configuration simple flux » dans lequel la colonne d'alimentation 6 est équipée d'un seul échangeur thermique 70, 70a, 70b, et d'autre part, pour un second mode de réalisation, dit « configuration double flux », dans lequel la colonne d'alimentation 6 comprend deux échangeurs thermiques 70, 70a, 70b. Tableau 1 Hauteur de la colonne d'alimentation (mm) Configuration simple flux Configuration double flux Température conduit d'alimentation(°C) Température conduit d'alimentation (°C) 5 41 21 55 41 21 105 43 20 155 55 21 205 56 - 255 - 21 305 67 - 355 - 21 405 72 - 455 - 22 505 73 - 555 - 22 605 73 - 705 73 755 - 23 805 72 - 505 72 - 555 - 24 1005 72 - 1115 - 25 1355 - 24 Table 1 below compares the temperature of the supply conduit 62 measured at several heights, on the one hand, for a first embodiment of the invention called "single flow configuration" in which the supply column 6 is equipped with a single heat exchanger 70, 70a, 70b, and on the other hand, for a second embodiment, called "double flow configuration", in which the supply column 6 comprises two heat exchangers 70, 70a, 70b . Table 1 Pedestal height (mm) Single stream configuration Double flow configuration Supply pipe temperature(°C) Supply pipe temperature (°C) 5 41 21 55 41 21 105 43 20 155 55 21 205 56 - 255 - 21 305 67 - 355 - 21 405 72 - 455 - 22 505 73 - 555 - 22 605 73 - 705 73 755 - 23 805 72 - 505 72 - 555 - 24 1005 72 - 1115 - 25 1355 - 24

Selon ces résultats, dans une configuration simple flux, la température du conduit d'alimentation 62 peut varier entre 41 °c et 72 °C alors que la configuration double flux permet de limiter la variation de température du conduit d'alimentation 62 entre 21°C et 24°C.According to these results, in a single-flow configuration, the temperature of the supply conduit 62 can vary between 41° C. and 72° C., while the double-flow configuration makes it possible to limit the temperature variation of the supply conduit 62 between 21° C. C and 24°C.

Ainsi, la configuration double flux, permet de conserver la température du conduit d'alimentation 62 à plus de 30°C en dessous du seuil des 60°C. De ce fait, la configuration double flux permet de réduire, voire de supprimer, le risque d'inflammation du fluide combustible C par transfert d'énergie calorifique depuis les gaz de combustion B.Thus, the double flow configuration makes it possible to keep the temperature of the supply conduit 62 at more than 30° C. below the threshold of 60° C. As a result, the dual-flow configuration makes it possible to reduce, or even eliminate, the risk of ignition of the combustible fluid C by transfer of heat energy from the combustion gases B.

Comme illustré à la figure 3, au moins un échangeur thermique 70, 70a, 70b comporte un orifice d'échappement 71. Cet orifice d'échappement 71 est ouvert dans le conduit d'évacuation 4. En particulier, l'orifice d'échappement 71 est disposé à proximité de la première extrémité 60 de la colonne d'évacuation 4. Dans cet exemple, c'est le second échangeur thermique 70b qui comporte un orifice d'échappement 71 ouvert en portion haute dans la lumière 41 du conduit d'évacuation 4. Ainsi, l'air frais E qui pénètre dans le second échangeur thermique 70b via l'orifice de prise d'air, parcourt la colonne d'alimentation 6 de manière ascendante jusqu'à l'orifice d'échappement 71. Au niveau de l'orifice d'échappement 71, l'air ascendant E se mêle avec les gaz de combustion B et est ensuite évacué vers l'extérieur par le conduit d'évacuation.As shown in picture 3 , at least one heat exchanger 70, 70a, 70b comprises an exhaust orifice 71. This exhaust orifice 71 is open in the exhaust duct 4. In particular, the exhaust orifice 71 is arranged close to the first end 60 of the evacuation column 4. In this example, it is the second heat exchanger 70b which comprises an exhaust orifice 71 open at the top portion in the slot 41 of the evacuation duct 4. Thus, the fresh air E which enters the second heat exchanger 70b via the air intake orifice, travels the supply column 6 upwards as far as the exhaust orifice 71. At the level of the exhaust port 71, the rising air E mixes with the combustion gases B and is then evacuated to the outside through the exhaust duct.

Selon l'invention, chaque échangeur thermique 70, 70a, 70b s'étend au moins entre chaque extrémité 60, 61 de la colonne d'alimentation 6. Plus précisément, le premier échangeur thermique 70a s'étend depuis la platine 25 jusque dans le manchon 44. En revanche, le second échangeur thermique 70b s'étend depuis la platine 25 jusqu'à la jonction entre la colonne d'alimentation 6 et le manchon 44.According to the invention, each heat exchanger 70, 70a, 70b extends at least between each end 60, 61 of the supply column 6. More specifically, the first heat exchanger 70a extends from the plate 25 into the sleeve 44. On the other hand, the second heat exchanger 70b extends from the plate 25 to the junction between the supply column 6 and the sleeve 44.

Comme illustré aux figures 1 et 3, le premier échangeur thermique 70a débouche dans le manchon 44. Le manchon 44 qui comprend des ouvertures ménagées dans sa paroi périphérique. Ainsi, le manchon 44 diffuse de l'air réchauffé qui a au préalable parcouru le premier échangeur thermique 70a depuis la plateforme 25.
Avantageusement, cela crée une circulation d'air naturelle au sein du premier échangeur thermique 70a. L'air frais D qui pénètre dans le premier échangeur thermique 70a au niveau de l'orifice de prise d'air. Lors de son entrée au niveau de l'orifice de prise d'air, l'air frais D se trouve à température ambiante. En parcourant le premier échangeur thermique 70a, l'air frais D se réchauffe pour être évacué du manchon 44, vers le local, à une température comprise entre 35°C et 40°C. La diffusion de l'air réchauffé au niveau du plafond du local contribue à diffuser de manière homogène la température produite par la combustion. Cette caractéristique améliore le confort thermique du local dans lequel la cheminée 1 est installée.As shown in figure 1 And 3 , the first heat exchanger 70a opens into the sleeve 44. The sleeve 44 which includes openings in its peripheral wall. Thus, the sleeve 44 diffuses heated air which has previously traveled through the first heat exchanger 70a from the platform 25.
Advantageously, this creates a natural air circulation within the first heat exchanger 70a. The fresh air D which enters the first heat exchanger 70a at the level of the air intake orifice. When it enters at the air intake orifice, the fresh air D is at ambient temperature. By traversing the first heat exchanger 70a, the fresh air D heats up to be evacuated from the sleeve 44, towards the room, at a temperature comprised between 35°C and 40°C. The diffusion of the heated air at the level of the ceiling of the room contributes to homogeneously distributing the temperature produced by the combustion. This feature improves the thermal comfort of the room in which the chimney 1 is installed.

Comme illustré à la figure 4, le foyer 2 est monté rotatif par rapport au conduit d'évacuation 4. A cet effet, le foyer 2 est relié au conduit d'évacuation via une liaison mécanique rotative telle qu'une liaison pivot cylindre/cylindre. De surcroît, le foyer 2 peut également être monté rotatif par rapport à la colonne d'alimentation 6. A cet effet, la platine 25 est montée pivotante par rapport au fond 22 du foyer 2. Pour cela, la platine 25 peut être engagée dans une liaison mécanique rotative. A titre indicatif, cette liaison mécanique rotative peut être constituée par un plateau tournant à roulement à bille, ou disque coopérant dans un pallier lisse etc. portion haute dans la lumière 41 du conduit d'évacuation 4. Ainsi, l'air frais E qui pénètre dans le second échangeur thermique 70b via l'orifice de prise d'air, parcourt la colonne d'alimentation 6 de manière ascendante jusqu'à l'orifice d'échappement 71. Au niveau de l'orifice d'échappement 71, l'air ascendant E se mêle avec les gaz de combustion B et est ensuite évacué vers l'extérieur par le conduit d'évacuation.As shown in figure 4 , the hearth 2 is rotatably mounted with respect to the exhaust duct 4. For this purpose, the hearth 2 is connected to the exhaust duct via a rotary mechanical connection such as a cylinder/cylinder pivot connection. In addition, hearth 2 can also be rotatably mounted relative to supply column 6. For this purpose, plate 25 is pivotally mounted relative to bottom 22 of hearth 2. For this, plate 25 can be engaged in a rotary mechanical linkage. By way of indication, this rotary mechanical connection may be constituted by a ball-bearing turntable, or disc cooperating in a plain bearing, etc. upper portion in the lumen 41 of the exhaust duct 4. Thus, the fresh air E which enters the second heat exchanger 70b via the air intake orifice, travels the supply column 6 upwards to at the exhaust port 71. At the exhaust port 71, the rising air E mixes with the combustion gases B and is then evacuated to the outside through the exhaust duct.

Selon l'invention, chaque échangeur thermique 70, 70a, 70b s'étend au moins entre chaque extrémité 60, 61 de la colonne d'alimentation 6. Plus précisément, le premier échangeur thermique 70a s'étend depuis la platine 25 jusque dans le manchon 44. En revanche, le second échangeur thermique 70b s'étend depuis la platine 25 jusqu'à la jonction entre la colonne d'alimentation 6 et le manchon 44.According to the invention, each heat exchanger 70, 70a, 70b extends at least between each end 60, 61 of the supply column 6. More specifically, the first heat exchanger 70a extends from the plate 25 into the sleeve 44. On the other hand, the second heat exchanger 70b extends from the plate 25 to the junction between the supply column 6 and the sleeve 44.

Comme illustré aux figures 1 et 3, le premier échangeur thermique 70a débouche dans le manchon 44. Le manchon 44 qui comprend des ouvertures ménagées dans sa paroi périphérique. Ainsi, le manchon 44 diffuse de l'air réchauffé qui a au préalable parcouru le premier échangeur thermique 70a depuis la plateforme 25. Avantageusement, cela crée une circulation d'air naturelle au sein du premier échangeur thermique 70a. L'air frais D qui pénètre dans le premier échangeur thermique 70a au niveau de l'orifice de prise d'air. Lors de son entrée au niveau de l'orifice de prise d'air, l'air frais D se trouve à température ambiante. En parcourant le premier échangeur thermique 70a, l'air frais D se réchauffe pour être évacué du manchon 44, vers le local, à une température comprise entre 35°C et 40°C. La diffusion de l'air réchauffé au niveau du plafond du local contribue à diffuser de manière homogène la température produite par la combustion. Cette caractéristique améliore le confort thermique du local dans lequel la cheminée 1 est installée.As shown in figure 1 And 3 , the first heat exchanger 70a opens into the sleeve 44. The sleeve 44 which includes openings in its peripheral wall. Thus, the sleeve 44 diffuses heated air which has previously passed through the first heat exchanger 70a from the platform 25. Advantageously, this creates a natural air circulation within the first heat exchanger 70a. The fresh air D which enters the first heat exchanger 70a at the level of the air intake orifice. When it enters at the air intake orifice, the fresh air D is at ambient temperature. By traversing the first heat exchanger 70a, the fresh air D heats up to be evacuated from the sleeve 44, towards the room, at a temperature comprised between 35°C and 40°C. The diffusion of the heated air at the level of the ceiling of the room contributes to homogeneously distributing the temperature produced by the combustion. This feature improves the thermal comfort of the room in which the chimney 1 is installed.

Comme illustré à la figure 4, le foyer 2 est monté rotatif par rapport au conduit d'évacuation 4. A cet effet, le foyer 2 est relié au conduit d'évacuation via une liaison mécanique rotative telle qu'une liaison pivot cylindre/cylindre. De surcroît, le foyer 2 peut également être monté rotatif par rapport à la colonne d'alimentation 6. A cet effet, la platine 25 est montée pivotante par rapport au fond 22 du foyer 2. Pour cela, la platine 25 peut être engagée dans une liaison mécanique rotative. A titre indicatif, cette liaison mécanique rotative peut-être constituée par un plateau tournant à roulement à bille, ou disque coopérant dans un pallier lisse etc.As shown in figure 4 , the hearth 2 is rotatably mounted with respect to the exhaust duct 4. For this purpose, the hearth 2 is connected to the exhaust duct via a rotary mechanical connection such as a cylinder/cylinder pivot connection. In addition, hearth 2 can also be rotatably mounted relative to supply column 6. For this purpose, plate 25 is pivotally mounted relative to bottom 22 of hearth 2. For this, plate 25 can be engaged in a rotary mechanical linkage. As an indication, this rotary mechanical connection may be constituted by a ball bearing turntable, or disc cooperating in a plain bearing, etc.

Claims (11)

  1. Fireplace (1) comprising:
    - a hearth (2) suspended from a support (3), the hearth (2) being laterally delimited by a peripheral wall (21) which is provided with at least one combustion air inlet,
    - a duct (4) for discharging combustion gases, the discharge duct (4) being secured to said support (3) and comprising a lower portion (40) which is secured to an upper part of the hearth (2), and an upper portion (42) opposite the lower portion (40),
    - at least one burner (5) for combustible fluid which is arranged in the hearth (2) facing said at least one air inlet,
    characterized in that it comprises:
    - a combustible fluid supply column (6) which extends between a first end (60) connected to a combustible fluid source and a second end (61) connected to said at least one burner (5), the supply column (6) passing downwardly through the discharge duct (4) from its upper portion (40) to its lower portion (42) and opening into the hearth (2) so as to transport the combustible fluid from the combustible fluid source to said at least one burner (5).
  2. Fireplace (1) according to claim 1, characterized in that the supply column (6) comprises a supply duct (62) and insulation means (7), the insulation means (7) encircling the supply duct (62) between each end (60, 61) of the supply column (6).
  3. Fireplace (1) according to claim 2, characterized in that the insulation means (7) comprise at least one heat exchanger (70, 70a, 70b) which encircles the supply duct (62), the heat exchanger (70, 70a, 70b) extending at least between each end (60, 61) of the supply column (6).
  4. Fireplace (1) according to either of claims 2 and 3, characterized in that the insulation means (7) comprise at least two heat exchangers (70, 70a, 70b), a first heat exchanger (70a) encircling the supply duct (62), while a second heat exchanger (70b) encircles the first heat exchanger (70a), each heat exchanger (70, 70a, 70b) extending at least between each end (60, 61) of the supply column (62).
  5. Fireplace (1) according to claim 4, dependent on claim 3,
    characterized in that the two heat exchangers (70, 70a, 70b) are arranged concentrically.
  6. Fireplace (1) according to either of claims 3 and 5, characterized in that the insulation means (7) comprise at least one air intake opening (25) arranged in the region of the hearth (2), the intake opening (25) supplying at least one heat exchanger (70, 70a, 70b) from the outside of the hearth (2) and generating an ascending air flow within the heat exchanger (70, 70a, 70b).
  7. Fireplace (1) according to any of claims 1 to 6, characterized in that it comprises:
    - an attachment plate (43) securing the supply duct (62) to the support (3), and
    - a sleeve (44) secured to the attachment plate (43), the sleeve (44) encircling the discharge duct (62) over a determined distance and diffusing heated air.
  8. Fireplace (1) according to any of claims 1 to 7, characterized in that the hearth (2) is rotatably mounted relative to the discharge duct (4) and/or to the supply column (6) which extends as far as a base (22) of the hearth (2), the base (22) of the hearth (2) delimiting the hearth (2) from below.
  9. Fireplace (1) according to claim 8, characterized in that it comprises a plate (25) arranged in the base (22) of the hearth (2), the plate (25) being pivotable relative to the base (22) of the hearth (2) and the supply column (6) being mounted so as to be secured to said pivotable plate (25).
  10. Fireplace (1) according to any of claims 8 and 9, characterized in the pivotable plate (25) and the base (22) are perforated in order to allow air to pass through to the supply column (6).
  11. Fireplace (1) according to any of claims 1 to 10, characterized in that the discharge duct (4) is secured to the support (3) through its upper portion (42), the discharge duct (4) thus acting as a suspension element for the hearth (2) relative to the support (3).
EP20792674.2A 2019-10-22 2020-10-22 Fireplace with suspended hearth Active EP4048953B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1911823A FR3102233A1 (en) 2019-10-22 2019-10-22 Hanging fireplace
FR1912910A FR3102234B1 (en) 2019-10-22 2019-11-19 Hanging fireplace
PCT/EP2020/079773 WO2021078870A1 (en) 2019-10-22 2020-10-22 Fireplace with suspended hearth

Publications (3)

Publication Number Publication Date
EP4048953A1 EP4048953A1 (en) 2022-08-31
EP4048953C0 EP4048953C0 (en) 2023-07-19
EP4048953B1 true EP4048953B1 (en) 2023-07-19

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EP20792674.2A Active EP4048953B1 (en) 2019-10-22 2020-10-22 Fireplace with suspended hearth

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US (1) US20230228426A1 (en)
EP (1) EP4048953B1 (en)
CN (1) CN114616425A (en)
CA (1) CA3155180A1 (en)
ES (1) ES2960575T3 (en)
FR (2) FR3102233A1 (en)
WO (1) WO2021078870A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US967089A (en) * 1910-02-02 1910-08-09 Henry L Wadley Oil-burner.
SE357048B (en) * 1971-03-18 1973-06-12 F Sverdrup
DE4132235C1 (en) * 1991-09-27 1992-08-13 Ws Waermeprozesstechnik Gmbh, 7253 Renningen, De
NL1021564C2 (en) * 2002-09-30 2004-04-02 Harrie Leenders Haardkachels B Gas heater.
ITVR20050020U1 (en) * 2005-07-29 2007-01-30 Gruppo Piazzetta Spa GAS FIREPLACE
ES1065510Y (en) * 2007-05-08 2007-12-01 Garcia Santiago Quesada CHIMNEY
DE102013112828A1 (en) * 2013-11-20 2015-05-21 Max Blank Gmbh Fuel granule furnace and operating method therefor

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Publication number Publication date
EP4048953A1 (en) 2022-08-31
EP4048953C0 (en) 2023-07-19
WO2021078870A1 (en) 2021-04-29
ES2960575T3 (en) 2024-03-05
CN114616425A (en) 2022-06-10
FR3102234B1 (en) 2021-11-19
US20230228426A1 (en) 2023-07-20
FR3102234A1 (en) 2021-04-23
CA3155180A1 (en) 2021-04-29
FR3102233A1 (en) 2021-04-23

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