EP2530380B1 - Heating installation comprising a wood-burning heater appliance, a building outlet and a connecting conduit - Google Patents

Heating installation comprising a wood-burning heater appliance, a building outlet and a connecting conduit Download PDF

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Publication number
EP2530380B1
EP2530380B1 EP12305605.3A EP12305605A EP2530380B1 EP 2530380 B1 EP2530380 B1 EP 2530380B1 EP 12305605 A EP12305605 A EP 12305605A EP 2530380 B1 EP2530380 B1 EP 2530380B1
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EP
European Patent Office
Prior art keywords
tube
peripheral
central tube
opening
central
Prior art date
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Active
Application number
EP12305605.3A
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German (de)
French (fr)
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EP2530380A1 (en
Inventor
Jean-Luc Pierre
Lionel Druette
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Poujoulat SA
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Poujoulat SA
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Priority to PL12305605T priority Critical patent/PL2530380T3/en
Publication of EP2530380A1 publication Critical patent/EP2530380A1/en
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Publication of EP2530380B1 publication Critical patent/EP2530380B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J13/00—Fittings for chimneys or flues 
    • F23J13/02—Linings; Jackets; Casings
    • F23J13/025—Linings; Jackets; Casings composed of concentric elements, e.g. double walled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J13/00—Fittings for chimneys or flues 
    • F23J13/04—Joints; Connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/02—Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/04—Balanced-flue arrangements, i.e. devices which combine air inlet to combustion unit with smoke outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2213/00—Chimneys or flues
    • F23J2213/10—Linings
    • F23J2213/101—Fastening means therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2213/00—Chimneys or flues
    • F23J2213/20—Joints; Connections
    • F23J2213/202—Joints; Connections between duct or stack sections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2213/00—Chimneys or flues
    • F23J2213/20—Joints; Connections
    • F23J2213/203—Joints; Connections between stack/duct and combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2213/00—Chimneys or flues
    • F23J2213/40—Heat insulation fittings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
    • F23J2900/13021—Means for supporting the lining of conducting means, e.g. ducts or chimneys

Definitions

  • the present invention relates to heating installations comprising a wood-burning appliance (type stove or insert), a building outlet, and a chimney duct interposed between the two.
  • a wood-burning appliance type stove or insert
  • a building outlet a chimney duct interposed between the two.
  • Heating appliances generally require an additional supply of air, called "combustion air”.
  • the corresponding heating installation comprises a heating appliance and a building outlet connected by a connecting duct extending over two floors.
  • the section of this connecting pipe comprises a central tube and a peripheral tube between which is formed an annular chamber for supplying combustion air to the heating apparatus; the central tube is isolated from the combustion air supply chamber by an air gap or an insulation.
  • the central tube extends to the building exit, and an off-center duct, independent, makes the connection between said building outlet and said annular chamber, for the supply of the latter in fresh combustion air.
  • the off-center duct serving to supply combustion air to the heating appliance has its outlet under the roof or outside, in a zone relatively remote from the outlet of the products of combustion, or close to it. but not in a concentric way.
  • such configurations for the combustion air intake cause significant pressure differences between the entry of air and the outlet of fumes due to the effect of wind on the building, which can prevent the operation of the device combustion and alter the correct evacuation of fumes (risk of backflow).
  • Such a conduit structure with an insulating inner layer which extends over its entire height, avoids, or at least substantially limits, the formation of bistre in the central tube, this by limiting the condensation phenomena within this tube.
  • this internal insulation limits the heat exchange between the combustion products and the combustion air gap, which prevents this peripheral air space from rising in temperature, and which makes it possible to optimize its size, for a supply correct combustion air of the heater.
  • the implementation of the system is relatively simple, with a concentric conduit from the bottom up, and a single roof outlet for air and fumes.
  • the air intake is advantageously provided all around the roof outlet and is close enough to the outlet of the fumes so that the effect of the wind between the inlet and the outlet is canceled, which allows an optimal operation of the roof. the heater.
  • the outer surface of the layer of insulating material rests against the inner surface of a holding tube, the outer surface of which defines said peripheral chamber with the inner surface of the peripheral tube, which retaining tube is mechanically linked, on the one hand with the central tube and on the other hand with the peripheral tube.
  • the chimney duct is made of several juxtaposed sections, one lower provided with said lower extensions for connection to the firebox of the wood burning appliance, another upper, ending at the level of the building outlet, associated possibly to one or more intermediate sections.
  • These duct sections each comprise an upper edge and a lower edge and they are connected together in a sealed manner; in addition, they comprise a tube for holding the layer of insulating material which is secured to the central tube and to the peripheral tube by means of a plurality of welded spacer tabs distributed over the periphery of said upper edge and said border lower.
  • said spacer tabs formed at the upper edge of the pipe sections consist of one-piece metal plates provided with three wings parallel to the bracket for their joining by welding with the central tube, the peripheral tube and the holding tube; on the other hand, said spacer tabs formed at the lower edge of the pipe sections consist of one-piece metal plates provided with two wings parallel to the bracket for their joining by welding with the peripheral tube and with the holding tube.
  • the lower extension of the central tube consists of a metal pipe extending vertically concentrically to said central tube, to the upper part of the furnace hearth;
  • the peripheral chamber comprises closure means at its lower end, and the lower extension of this peripheral chamber consists of a metal pipe -whose upper section is connected to an opening in the wall of said peripheral tube, the section of which median extends vertically, non-concentrically to said central tube, and whose terminal section is connected to the lower part of the furnace hearth.
  • the lower extension of the central tube consists of a metal pipe-whose upper section is connected to an opening in the wall of the central tube, and whose lower section extends vertically to the upper portion of the furnace hearth, said central tube having closure means formed below the level of said connection opening of said lower extension; furthermore, the peripheral chamber comprises closing means, formed under the level of said closing means of said central tube, which closure means of said peripheral chamber comprise an opening, centered on the axis of said central tube, for the connection of said lower extension said peripheral chamber which consists of a metal pipe whose upper section extends vertically to a terminal section coming to connect at the lower part of the furnace hearth.
  • the lower extension of the central tube consists of a metal pipe connected to an opening in the wall of the central tube, which pipe extends horizontally to the upper part of the furnace hearth. heating, said central tube having closure means, below the level of said connection opening of said horizontal extension; in addition, the peripheral chamber comprises closing means, formed below the level of said means for closing said central tube, which closure means of said peripheral chamber comprise an opening centered on the axis of said central tube for the connection of said lower extension of said peripheral chamber, the latter consisting of a metal pipe whose upper section extends vertically to a terminal section coming to connect at the lower part of the furnace hearth.
  • the peripheral tube is advantageously extended downwards, below the level of its closure means, by a dressing jacket, within which is housed at least the vertical section of said extension.
  • a dressing jacket within which is housed at least the vertical section of said extension.
  • lower peripheral chamber which dressing shirt has a first lower opening adapted for the passage of the end portion of said lower extension of the peripheral chamber, and a second lower opening, adapted for mounting said end portion of extension.
  • the upper end of the central tube passes through the opening of the closure plate of the building outlet, whose sections are identical, with the game, through a suitable sleeve ; and said closure plate is mounted on the end of said wall belt by means of regularly distributed tabs, which allow said closure plate to be slightly spaced from the upper end edge of said belt, in order to obtain said fresh air inlet opening (this fresh air inlet opening extends all around the roof outlet).
  • the distance between the upper end of the peripheral tube and the bottom face of the closure plate is advantageously between 40 and 60 cm.
  • the heating system illustrated on the Figures 1 and 2 consists of a wood burning appliance 1 ( figure 1 ) from which extends upward a smoke duct 2 ( Figures 1 and 2 ), to a building exit 3 ( figure 3 ).
  • the heater 1 consists of a stove or insert of conventional structure, using logs or pellets as fuel.
  • combustion chamber 4 at the upper part of which is provided a discharge orifice 5 of the combustion products (here made in the top face of the hearth 4), and at the bottom of which is arranged a inlet 6 of combustion air inlet (here made in the bottom face of the hearth 4).
  • the conduit fettling 2 which makes the connection between the one heater and the vessel outlet 3 is formed in several sections 2 a, 2 b, 2 c, juxtaposed and connected together sealingly and coaxially.
  • the inner surface 15 of the layer of insulating material 13 bears on the outer surface 8 of the central tube 7; and its outer surface 16 bears against the inner surface 17 of the holding tube 14.
  • This outer surface 16 of the insulating layer 13 is located at a distance from the inner surface 12 of the peripheral tube 10. Also, the holding tube 14 is located at a distance from the inner surface 12 of the peripheral tube 10. Its outer surface 18 defines, with the inner surface 12 of the peripheral tube 10, a peripheral annular chamber 19 acting as a feed chamber. Combustion air of the heater 1.
  • the diameter of the central tube 7 may be of the order of 80 to 200 mm; the thickness of the layer of insulating material 13 may be of the order of 20 mm; and the thickness of the annular chamber 19 may be of the order of 30 mm.
  • the holding tube 14 is mechanically connected to the central tube 7 and to the peripheral tube 10.
  • These different tubes 7, 10, 14 are made of metal material, for example stainless steel or galvanized steel.
  • this holding tube 14 may not be present.
  • the lower end 20 of conduit 2, and particularly its lower portion 2a comprises an extension 21 for connecting the central tube 7 (and the central chamber 9 ') to the upper opening 5 of the hearth 4 of the heater 1, and an extension 22 for connecting the peripheral tube 10 (and the peripheral chamber 19) to the lower port 6 of the furnace 4 of the heater.
  • the upper end 23 of the duct 2, and more particularly its upper portion 2c leads to the building outlet 3 in the manner described below.
  • the conduit 2 can comprise one or more intermediate portions 2 b.
  • This intermediate portion 2b is delimited by an upper edge 24 (in this case of the male type) and a lower edge 25 (here female type), complementary to each other to allow connection by interlocking different juxtaposed sections. It comprises a central tube section 7, an insulating layer section 13, a holding tube section 14 for this insulating layer 13, and a peripheral tube section 10.
  • this intermediate section of duct 2b comprises a plurality of spacer tabs 26 (in this case three in number), regularly distributed, adapted to fasten together the central tube 7, the holding tube 14 and the peripheral tube 10.
  • Each spacer tab 26 ( figure 5 ) consists of a metal plate 27, provided with three monobloc wings 28, 29 and 30 which extend to the square. These three wings 28, 29 and 30 are obtained by cutting / folding; they are parallel to each other, and they are spaced from each other by a distance adapted to allow their welding, one 28 on the central tube 7, another 29 on the holding tube 14 and another 30 on the peripheral tube 10, so as to secure these three tubes together, while maintaining their radial spacing.
  • the end flanges 30 and 28 of the spacer tabs 26 are respectively welded to the inner face 12 of the peripheral tube 10 and to the outer face 8 of the central tube 7; the middle wing 29 is welded to the outer face 18 of the holding tube 14.
  • the plate 27 extends perpendicularly to the axis of the pipe section 2b and in the plane of the upper end of this pipe section 2b .
  • the intermediate section of duct 2b comprises a plurality of spacer tabs 31 (in this case three in number), regularly distributed, adapted to secure together the retaining tube 14 and the peripheral tube 10 .
  • Each spacer tab 31 ( figure 6 ) consists of a metal plate 32, provided with two wings 33 and 34 which extend to the square. These two wings 33 and 34 are obtained by cutting / folding; they are parallel to each other and are spaced from each other by a distance adapted to allow their welding, one 33 on the outer face 18 of the holding tube 14, and the other 34 on the inner face 12 of the peripheral tube 10, so as to secure these two tubes together, while maintaining their radial spacing.
  • Identical or similar spacers tabs may be provided at upper and lower ends of the upper and lower sections of conduit 2 a, 2 c.
  • the upper ends 24 and lower 25 of the pipe section 2b are adapted to allow sealing engagement of the different juxtaposed pipe sections.
  • the flat 27 of the spacer tabs 26 of an underlying section bears, or substantially in support, against the lower end of the layer of insulating material 13 of the section located directly above.
  • the corresponding interlock is locked in conventional manner by means of clamps 35.
  • conduit 2 leads to the building exit 3, as shown in FIG. figure 2 .
  • This building outlet 3 comprises a belt of side walls 36 whose upper end comprises a closure plate 37 provided with a central opening 38 and surmounted by a rain cap 39.
  • the end section of duct 2c is fixed to the wall belt 36 by means of connecting means 40 adapted (which connect the inner face of the wall belt 36 and the outer face of the peripheral tube 10).
  • the upper end of the central tube 7 passes through the opening 38 (whose sections are identical, with the game), via a suitable sleeve; and this upper tube end protrudes slightly beyond the top face of the closure plate 37.
  • the layer of insulating material 13 and its holding tube 14 extend to below the closure plate 37; more specifically, the upper end of the layer of insulating material 13 comes into contact or substantially in contact with the underside of the closure plate 37.
  • the thermal bridges are thus eliminated at the upper end of the central tube 7 , which makes it possible to very substantially limit the phenomena of condensation and bistrage in the upper part of this central tube 7 (these phenomena may cause corrosion likely, in the event of a breakthrough, to cause a flue gas suction via the intake channel. combustion air).
  • the upper end 41 of the peripheral tube 10 extends away from the closure plate 37, so that the upper opening of the annular chamber 19 does not encounter any obstacle for the removal of combustion air within the volume of the building outlet 3, and thus to limit the pressure drops within this chamber 19.
  • the distance between the upper end 41 of the peripheral tube 10 and the underside of the the closure plate 37 may be between 40 and 60 cm; it is advantageously of the order of 50 cm.
  • At least one opening 42 is provided in the wall belt 36 to ensure the entry of fresh air within its internal volume.
  • This opening 42 is formed between the upper end of the wall belt 36 and the closure plate 37. More specifically, this closure plate 37 is mounted on the end of the wall belt 36 by means of tabs (not visible on the figure 2 ), regularly distributed; these tabs allow to slightly spread the plate 37 of the upper end edge of the belt 36, to obtain the desired opening 42 (which is here peripheral).
  • the orientation arrow 42 'on the figure 2 shows the passage of fresh air from outside, in the internal volume of the wall belt 36, for feeding the annular chamber 19.
  • the vertical duct 2 is placed in line with the heating apparatus 1 and extends co-axially to the outlet orifice 5 of the combustion products, formed in the top face of the hearth 4.
  • the lower extension 21 of the central tube 7 (and of the central chamber 9 ') consists of a metal pipe which extends vertically and concentrically to said central tube 7, to the orifice 5.
  • the lower extension 22 of the peripheral tube 10 (and the peripheral chamber 19) extends downwards, on the side of the heater 1.
  • extension 22 consists of a metal pipe of which the upper section 22 a is connected to an opening 43 formed in the wall of peripheral tube 10; this upper portion 22 a extends downwardly through a vertical median section 22 b, which extends itself by an end section 22 c bent, which is to be connected to the orifice 6 provided in the underside of the hearth 4 .
  • the peripheral annular chamber 19 At the lower end of the peripheral tube 10, below the level of the opening 43, the peripheral annular chamber 19 comprises closure means 44. Under these closing means 44, it is noted that the peripheral tube 10 extends, to the top face of the heater 1, by a liner 45. This liner 45 is concentric to the extension 21 of the central tube 7; it acts as an element of dressing and protection. In the upper part of the jacket 45, the presence of ventilation openings 46 is noted.
  • the figure 7 illustrates a possible alternative embodiment, wherein the vertical duct 2 is placed on the rear of the heater 1.
  • the lower extension 21 'of the central tube 7 consists of a metal pipe comprising - an upper section 21' is connected to an opening 47 formed in the wall of said central tube 7, and - a lower section 21 'b which extends vertically, in line with the upper orifice 5 of the hearth 4, to connect to this orifice 5.
  • the central tube 7 comprises closure means 48, formed below the level of the connection opening 47.
  • the peripheral tube 10, and the associated annular chamber 19 also comprise closure means 49, below the level of the aforementioned closure means 48 of the central tube 7; and these closure means 49 comprise a central opening 50 (centered on the axis of the duct 2), for the connection of the lower extension 22 'of the tube 10 and the peripheral chamber 19.
  • This extension 22 ' consists of a metal pipe whose upper section 22' has extends vertically, directly above the pipe 2, followed by an end section 22 ' b bent, which is connected to the orifice 6 formed in the underside of the fireplace 4.
  • a dressing jacket 51 which extends downwardly the lower end of the peripheral tube 10 to the ground.
  • This sleeve 51 extends co-axially to the peripheral tube 10, under its closure means 49; it is in the form of a vertical tube, preferably metal, in which is housed the upper vertical section 22 'a of the extension 22 (and part of the end portion 22' b).
  • the liner 51 has ventilation openings 52.
  • it comprises a first opening 53 adapted for the passage of the bent end portion 22 ' b of the extension 22 ', and a second opening 54, for mounting this end portion 22'b (in particular for accessibility to the connection clamps of some of its constituent sections).
  • the second opening 54 is preferably arranged diametrically opposite to the first opening 53.
  • This jacket 51 serves to protect the air tube 22 'and form a ground support for the conduit 2; it also improves the aesthetics of the installation.
  • the figure 8 illustrates yet another possible embodiment, wherein the vertical duct 2 is placed on the rear of the heater 1.
  • the lower extension 21 "of the central tube 7 consists of a horizontal metal pipe making the connection between an opening 55 formed in the wall of said central tube 7, and an orifice 5 'formed in the upper part of the rear face of the hearth 4
  • the rest of the structure is identical or similar to what has been described above in relation to the figure 7 .
  • the peripheral tube 10, and the associated annular chamber 19 also include closure means 57, below the level of the aforementioned closure means 56 of the central tube 7; and these closing means 57 comprise a central opening 58 (centered on the axis of the duct 2), for the connection of the lower extension 22 "of the tube 10 and the peripheral chamber 19.
  • This extension 22 " consists of a metal pipe whose upper portion 22" has extends vertically, directly above the duct 2, followed by an end section 22 "b bent, which is connected to the orifice 6 formed in the underside of the fireplace 4.
  • a dressing jacket 59 extends downwardly the lower end of the peripheral tube 10, to the ground.
  • This jacket 59 extends co-axially to the peripheral tube 10, under its closure means 57; it is in the form of a vertical tube, preferably metal, in which is housed the upper vertical section 22 "a of the extension 22 '.
  • the jacket 59 has ventilation openings 60.
  • it comprises a first opening 61 adapted for the passage of the bent end portion 22 " b of the extension 22", as well as a second opening 62, allowing the mounting of this end portion 22 " b (in particular for accessibility to the connection clamps of some of its constituent sections).
  • the second opening 62 is preferably arranged diametrically opposite to the first opening 61.

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

Description

La présente invention concerne les installations de chauffage comprenant un appareil de chauffage à bois (type poêle ou insert), une sortie de bâtiment, et un conduit de fumisterie interposé entre les deux.The present invention relates to heating installations comprising a wood-burning appliance (type stove or insert), a building outlet, and a chimney duct interposed between the two.

Les appareils de chauffage nécessitent généralement une alimentation supplémentaire en air, dit « air comburant ».Heating appliances generally require an additional supply of air, called "combustion air".

Pour réaliser cette alimentation en air comburant, une solution connue, pour les appareils à gaz ou à fioul, consiste à utiliser une juxtaposition de tronçons de conduits composés chacun de deux tubes concentriques :

  1. (i) l'un central, délimité par une surface extérieure et par une surface intérieure définissant une chambre centrale pour l'évacuation des produits de combustion générés par l'appareil de chauffage, et
  2. (ii) un autre périphérique, délimité par une surface extérieure et par une surface intérieure, au sein duquel est logé ledit tube central, pour définir, entre eux, une chambre périphérique annulaire assurant l'alimentation en air comburant de l'appareil de chauffage.
Les extrémités inférieures de ces deux tubes central et périphérique comportent des prolongements pour leur raccordement respectif en parties supérieure et inférieure du foyer de l'appareil de chauffage; et leurs extrémités supérieures débouchent au niveau de la sortie de bâtiment associée.To achieve this supply of combustion air, a known solution for gas or oil-burning appliances consists in using a juxtaposition of pipe sections each composed of two concentric tubes:
  1. (i) a central, defined by an outer surface and an inner surface defining a central chamber for evacuation of the combustion products generated by the heater, and
  2. (ii) another peripheral, delimited by an outer surface and an inner surface, in which is housed said central tube, to define, between them, an annular peripheral chamber for supplying combustion air to the heating apparatus .
The lower ends of these two central and peripheral tubes have extensions for their respective connection in upper and lower parts of the furnace hearth; and their upper ends open at the associated building exit.

Cependant, pour les appareils de chauffage à bois, il existe un risque de formation et d'accumulation de bistre au sein du tube central, susceptible de limiter la capacité du conduit à évacuer les produits de combustion et pouvant aller jusqu'à l'obturation totale de ce tube central, ce risque étant fonction du combustible utilisé (nature du bois, caractéristiques d'humidité...) et de l'aération de l'appareil appliquée par l'utilisateur.
D'autre part, les températures de fumées de tels appareils de chauffage à bois sont élevées, et ces fumées peuvent arriver à perturber leur alimentation en air comburant.However, for wood heaters, there is a risk of formation and accumulation of bistre in the central tube, which may limit the ability of the pipe to evacuate the combustion products and up to the shutter total of this central tube, this risk being a function of the fuel used (nature of the wood, moisture characteristics ...) and ventilation of the device applied by the user.
On the other hand, the flue gas temperatures of such wood-burning appliances are high, and these fumes may be able to disrupt their supply of combustion air.

Par conséquent les conduits actuels précités ne sont pas applicables aux appareils de chauffage à bois.Therefore the current ducts mentioned above are not applicable to wood burning appliances.

Une solution à ces problèmes est décrite dans le document US-2010/0108052 .A solution to these problems is described in the document US-2010/0108052 .

L'installation de chauffage correspondante comprend un appareil de chauffage et une sortie de bâtiment raccordés par un conduit de liaison s'étendant sur deux étages.The corresponding heating installation comprises a heating appliance and a building outlet connected by a connecting duct extending over two floors.

Sur la hauteur du rez-de-chaussée, le tronçon de ce conduit de liaison comprend un tube central et un tube périphérique entre lesquels est ménagée une chambre annulaire pour l'alimentation en air comburant de l'appareil de chauffage ; le tube central est isolé de la chambre d'alimentation en air comburant par une lame d'air ou une isolation.On the height of the ground floor, the section of this connecting pipe comprises a central tube and a peripheral tube between which is formed an annular chamber for supplying combustion air to the heating apparatus; the central tube is isolated from the combustion air supply chamber by an air gap or an insulation.

Au-dessus, partant du plancher séparant le rez-de-chaussée du premier étage, le tube central se prolonge jusqu'à la sortie de bâtiment, et un conduit décentré, indépendant, fait la liaison entre ladite sortie de bâtiment et ladite chambre annulaire, pour l'alimentation de cette dernière en air neuf comburant.Above, from the floor separating the ground floor from the first floor, the central tube extends to the building exit, and an off-center duct, independent, makes the connection between said building outlet and said annular chamber, for the supply of the latter in fresh combustion air.

Mais une telle solution s'avère relativement complexe à mettre en oeuvre car il est nécessaire, dans un premier temps, de mettre en place le conduit de fumée et sa sortie, puis de poser ensuite le conduit d'air décentré, ce qui n'est pas aisé à réaliser, notamment au niveau de la traversée de plancher.But such a solution is relatively complex to implement because it is necessary, in the first place, to set up the flue and its output, and then to put the off-center air duct, which does not. is not easy to achieve, especially at the floor crossing.

De plus, le conduit décentré servant d'amenée d'air comburant à l'appareil de chauffage, a son débouché sous la toiture ou à l'extérieur, dans une zone relativement éloignée du débouché des produits de combustion, ou proche de celui-ci mais pas de façon concentrique. Or, de telles configurations pour la prise d'air comburant entrainent des différences de pression importantes entre l'entrée de l'air et la sortie des fumées dues à l'effet du vent sur le bâtiment, pouvant empêcher le fonctionnement de l'appareil à combustion et altérer l'évacuation correcte des fumées (risque de refoulement).In addition, the off-center duct serving to supply combustion air to the heating appliance, has its outlet under the roof or outside, in a zone relatively remote from the outlet of the products of combustion, or close to it. but not in a concentric way. However, such configurations for the combustion air intake cause significant pressure differences between the entry of air and the outlet of fumes due to the effect of wind on the building, which can prevent the operation of the device combustion and alter the correct evacuation of fumes (risk of backflow).

Pour remédier à ces inconvénients, la présente invention propose une installation de chauffage comprenant -un appareil de chauffage à bois, type poêle ou insert, comportant un foyer de combustion, -une sortie de bâtiment, et -un conduit de liaison entre les deux, lequel conduit comporte :

  1. (i) un tube central délimité par une surface extérieure, et par une surface intérieure définissant une chambre centrale pour l'évacuation des produits de combustion générés par ledit appareil de chauffage à bois, et
  2. (ii) un tube périphérique au sein duquel est logé ledit tube central, lequel tube périphérique est délimité par une surface extérieure et par une surface intérieure, ledit tube central et ledit tube périphérique définissant entre eux une chambre périphérique, pour l'alimentation en air comburant dudit appareil de chauffage à bois, les extrémités inférieures desdits tubes central et périphérique comportant des prolongements pour leur raccordement respectif en parties supérieure et inférieure du foyer dudit appareil de chauffage à bois ;
en outre, la surface extérieure dudit tube central est revêtue d'une couche de matériau isolant délimitée par une surface intérieure en appui sur la surface extérieure dudit tube central, et par une surface extérieure située à distance de la surface intérieure dudit tube périphérique, pour former ladite chambre périphérique ;
et conformément à la présente invention, ladite sortie de bâtiment comprend une ceinture de parois latérales associée à une plaque de fermeture supérieure dans laquelle est ménagée une ouverture pour le passage de l'extrémité du tube central dudit conduit de liaison, ladite couche de matériau isolant dudit conduit s'étendant jusqu'au-dessous de ladite plaque de fermeture ; en outre -la face intérieure de ladite ceinture de parois comporte des moyens de fixation dudit tube périphérique dudit conduit, - l'extrémité supérieure de ce tube périphérique s'étend à distance de la face de dessous de ladite plaque de fermeture, et -au moins une ouverture est ménagée dans ladite ceinture de parois, pour assurer l'entrée d'air neuf dans le volume délimité par ladite ceinture de parois.To overcome these drawbacks, the present invention proposes a heating installation comprising a wood-burning appliance, such as a stove or insert, comprising a combustion chamber, a building outlet, and a connection duct between the two, which leads comprises:
  1. (i) a central tube defined by an outer surface, and an inner surface defining a central chamber for evacuation of the combustion products generated by said wood burning appliance, and
  2. (ii) a peripheral tube in which is housed said central tube, which peripheral tube is delimited by an outer surface and an inner surface, said central tube and said peripheral tube defining between them a peripheral chamber for the supply of air the oxidizer of said wood burning appliance, the lower ends of said central and peripheral tubes including extensions for their respective connection in upper and lower portions of the hearth of said wood burning appliance;
in addition, the outer surface of said central tube is coated with a layer of insulating material delimited by an inner surface resting on the outer surface of said central tube, and by an outer surface located at a distance from the inner surface of said peripheral tube, for forming said peripheral chamber;
and in accordance with the present invention, said building outlet comprises a side wall belt associated with an upper closure plate in which is provided an opening for the passage of the end of the central tube of said connecting conduit, said layer of insulating material said duct extending to below said closure plate; in addition -the inner face of said wall belt has means for fixing said peripheral tube of said duct, -the upper end of this peripheral tube extends at a distance from the underside of said closure plate, and -au at least one opening is provided in said belt walls, to ensure the entry of fresh air into the volume defined by said belt walls.

Une telle structure de conduit, avec une couche isolante intérieure qui s'étend sur toute sa hauteur, évite, ou tout au moins limite sensiblement, la formation de bistre dans le tube central, ceci en limitant les phénomènes de condensation à l'intérieur de ce tube. De plus cette isolation interne limite les échanges thermiques entre les produits de combustion et la lame d'air comburant, ce qui évite à cette lame d'air périphérique de monter en température, et ce qui permet d'optimiser sa dimension, pour une alimentation correcte en air comburant de l'appareil de chauffage.Such a conduit structure, with an insulating inner layer which extends over its entire height, avoids, or at least substantially limits, the formation of bistre in the central tube, this by limiting the condensation phenomena within this tube. In addition, this internal insulation limits the heat exchange between the combustion products and the combustion air gap, which prevents this peripheral air space from rising in temperature, and which makes it possible to optimize its size, for a supply correct combustion air of the heater.

En outre, la mise en oeuvre du système est relativement simple, avec un conduit concentrique du bas en haut, et une seule sortie de toit pour l'air et les fumées.In addition, the implementation of the system is relatively simple, with a concentric conduit from the bottom up, and a single roof outlet for air and fumes.

L'entrée d'air est avantageusement prévue sur tout le pourtour de la sortie de toit et est suffisamment proche du débouché des fumées pour que l'effet du vent entre l'entrée et la sortie soit annulé, ce qui permet un fonctionnement optimal de l'appareil de chauffage.The air intake is advantageously provided all around the roof outlet and is close enough to the outlet of the fumes so that the effect of the wind between the inlet and the outlet is canceled, which allows an optimal operation of the roof. the heater.

Selon une forme de réalisation préférée, la surface extérieure de la couche de matière isolante est en appui contre la surface intérieure d'un tube de maintien, dont la surface extérieure définit ladite chambre périphérique avec la surface intérieure du tube périphérique, lequel tube de maintien est lié mécaniquement, d'une part avec le tube central et d'autre part avec le tube périphérique.According to a preferred embodiment, the outer surface of the layer of insulating material rests against the inner surface of a holding tube, the outer surface of which defines said peripheral chamber with the inner surface of the peripheral tube, which retaining tube is mechanically linked, on the one hand with the central tube and on the other hand with the peripheral tube.

De préférence, le conduit de fumisterie est réalisé en plusieurs tronçons juxtaposés, l'un inférieur muni desdits prolongements inférieurs pour le raccordement au foyer de l'appareil de chauffage à bois, un autre supérieur, aboutissant au niveau de la sortie de bâtiment, associés éventuellement à un ou plusieurs tronçons intermédiaires.
Ces tronçons de conduit comportent chacun une bordure supérieure et une bordure inférieure et ils sont raccordés ensemble de manière étanche ; de plus, ils comportent un tube de maintien de la couche de matière isolante qui est solidarisé avec le tube central et avec le tube périphérique au moyen d'une pluralité de pattes entretoises soudées, réparties sur la périphérie de ladite bordure supérieure et de ladite bordure inférieure.Preferably, the chimney duct is made of several juxtaposed sections, one lower provided with said lower extensions for connection to the firebox of the wood burning appliance, another upper, ending at the level of the building outlet, associated possibly to one or more intermediate sections.
These duct sections each comprise an upper edge and a lower edge and they are connected together in a sealed manner; in addition, they comprise a tube for holding the layer of insulating material which is secured to the central tube and to the peripheral tube by means of a plurality of welded spacer tabs distributed over the periphery of said upper edge and said border lower.

Dans une forme de réalisation préférée, lesdites pattes entretoises ménagées au niveau de la bordure supérieure des tronçons de conduit consistent en des plats métalliques monoblocs munis de trois ailes parallèles à l'équerre pour leur solidarisation par soudage avec le tube central, le tube périphérique et le tube de maintien ; d'autre part, lesdites pattes entretoises ménagées au niveau de la bordure inférieure des tronçons de conduit consistent en des plats métalliques monoblocs munis de deux ailes parallèles à l'équerre pour leur solidarisation par soudage avec le tube périphérique et avec le tube de maintien.In a preferred embodiment, said spacer tabs formed at the upper edge of the pipe sections consist of one-piece metal plates provided with three wings parallel to the bracket for their joining by welding with the central tube, the peripheral tube and the holding tube; on the other hand, said spacer tabs formed at the lower edge of the pipe sections consist of one-piece metal plates provided with two wings parallel to the bracket for their joining by welding with the peripheral tube and with the holding tube.

Selon une forme de réalisation particulière, le prolongement inférieur du tube central consiste en un tuyau métallique s'étendant verticalement de manière concentrique audit tube central, jusqu'à la partie supérieure du foyer de l'appareil de chauffage ; la chambre périphérique comporte des moyens de fermeture au niveau de son extrémité inférieure, et le prolongement inférieur de cette chambre périphérique consiste en un tuyau métallique -dont le tronçon supérieur est connecté à une ouverture ménagée dans la paroi dudit tube périphérique, -dont le tronçon médian s'étend verticalement, de manière non concentrique audit tube central, et -dont le tronçon terminal vient se raccorder au niveau de la partie inférieure du foyer de l'appareil de chauffage.According to a particular embodiment, the lower extension of the central tube consists of a metal pipe extending vertically concentrically to said central tube, to the upper part of the furnace hearth; the peripheral chamber comprises closure means at its lower end, and the lower extension of this peripheral chamber consists of a metal pipe -whose upper section is connected to an opening in the wall of said peripheral tube, the section of which median extends vertically, non-concentrically to said central tube, and whose terminal section is connected to the lower part of the furnace hearth.

Selon une autre forme de réalisation, le prolongement inférieur du tube central consiste en un tuyau métallique -dont le tronçon supérieur est connecté à une ouverture ménagée dans la paroi du tube central, et -dont le tronçon inférieur s'étend verticalement jusqu'à la partie supérieure du foyer de l'appareil de chauffage, ledit tube central comportant des moyens de fermeture, ménagés sous le niveau de ladite ouverture de connexion dudit prolongement inférieur ; en outre la chambre périphérique comporte des moyens de fermeture, ménagés sous le niveau desdits moyens de fermeture dudit tube central, lesquels moyens de fermeture de ladite chambre périphérique comportent une ouverture, centrée sur l'axe dudit tube central, pour la connexion dudit prolongement inférieur de ladite chambre périphérique qui consiste en un tuyau métallique dont le tronçon supérieur s'étend verticalement jusqu'à un tronçon terminal venant se raccorder au niveau de la partie inférieure du foyer de l'appareil de chauffage.According to another embodiment, the lower extension of the central tube consists of a metal pipe-whose upper section is connected to an opening in the wall of the central tube, and whose lower section extends vertically to the upper portion of the furnace hearth, said central tube having closure means formed below the level of said connection opening of said lower extension; furthermore, the peripheral chamber comprises closing means, formed under the level of said closing means of said central tube, which closure means of said peripheral chamber comprise an opening, centered on the axis of said central tube, for the connection of said lower extension said peripheral chamber which consists of a metal pipe whose upper section extends vertically to a terminal section coming to connect at the lower part of the furnace hearth.

Selon encore une autre forme de réalisation, le prolongement inférieur du tube central consiste en un tuyau métallique connecté à une ouverture ménagée dans la paroi du tube central, lequel tuyau s'étend horizontalement jusqu'à la partie supérieure du foyer de l'appareil de chauffage, ledit tube central comportant des moyens de fermeture, sous le niveau de ladite ouverture de connexion dudit prolongement horizontal ; de plus, la chambre périphérique comporte des moyens de fermeture, ménagés sous le niveau desdits moyens de fermeture dudit tube central, lesquels moyens de fermeture de ladite chambre périphérique comportent une ouverture centrée sur l'axe dudit tube central pour la connexion dudit prolongement inférieur de ladite chambre périphérique, ce dernier consistant en un tuyau métallique dont le tronçon supérieur s'étend verticalement jusqu'à un tronçon terminal venant se raccorder au niveau de la partie inférieure du foyer de l'appareil de chauffage.According to yet another embodiment, the lower extension of the central tube consists of a metal pipe connected to an opening in the wall of the central tube, which pipe extends horizontally to the upper part of the furnace hearth. heating, said central tube having closure means, below the level of said connection opening of said horizontal extension; in addition, the peripheral chamber comprises closing means, formed below the level of said means for closing said central tube, which closure means of said peripheral chamber comprise an opening centered on the axis of said central tube for the connection of said lower extension of said peripheral chamber, the latter consisting of a metal pipe whose upper section extends vertically to a terminal section coming to connect at the lower part of the furnace hearth.

Dans le cadre de ces deux dernières formes de réalisation, le tube périphérique se prolonge avantageusement vers le bas, sous le niveau de ses moyens de fermeture, par une chemise d'habillage, au sein de laquelle est logé au moins le tronçon vertical dudit prolongement inférieur de la chambre périphérique, laquelle chemise d'habillage comporte une première ouverture inférieure adaptée pour le passage de la partie terminale dudit prolongement inférieur de la chambre périphérique, et une seconde ouverture inférieure, adaptée pour le montage de ladite partie terminale de prolongement.In the context of these last two embodiments, the peripheral tube is advantageously extended downwards, below the level of its closure means, by a dressing jacket, within which is housed at least the vertical section of said extension. lower peripheral chamber, which dressing shirt has a first lower opening adapted for the passage of the end portion of said lower extension of the peripheral chamber, and a second lower opening, adapted for mounting said end portion of extension.

Selon encore une autre particularité, l'extrémité supérieure du tube central passe au travers de l'ouverture de la plaque de fermeture de la sortie de bâtiment, dont les sections sont identiques, au jeu près, par l'intermédiaire d'un manchon adapté ; et ladite plaque de fermeture est montée sur l'extrémité de ladite ceinture de parois par l'intermédiaire de pattes régulièrement réparties, qui permettent d'écarter légèrement ladite plaque de fermeture de la bordure d'extrémité supérieure de ladite ceinture, afin d'obtenir ladite ouverture d'entrée d'air neuf (cette ouverture d'entrée d'air neuf s'étend sur tout le pourtour de la sortie de toit).According to yet another feature, the upper end of the central tube passes through the opening of the closure plate of the building outlet, whose sections are identical, with the game, through a suitable sleeve ; and said closure plate is mounted on the end of said wall belt by means of regularly distributed tabs, which allow said closure plate to be slightly spaced from the upper end edge of said belt, in order to obtain said fresh air inlet opening (this fresh air inlet opening extends all around the roof outlet).

D'autre part, dans la ceinture de parois latérales, la distance qui sépare l'extrémité supérieure du tube périphérique de la face de dessous de la plaque de fermeture, est avantageusement comprise entre 40 et 60 cm.On the other hand, in the side wall belt, the distance between the upper end of the peripheral tube and the bottom face of the closure plate is advantageously between 40 and 60 cm.

L'invention sera encore illustrée, sans être aucunement limitée, par la description suivante de plusieurs modes de réalisation possibles, donnés uniquement à titre d'exemple et représentés sur les dessins annexés dans lesquels :

  • la figure 1 est une vue schématique, en coupe longitudinale, d'une partie d'un mode de réalisation possible de l'installation conforme à l'invention, comprenant un appareil de chauffage à bois et la partie inférieure du conduit de fumisterie associé ;
  • la figure 2 est une vue schématique, en coupe longitudinale, d'une autre partie de l'installation de chauffage conforme à l'invention, comprenant la partie supérieure du conduit de fumisterie et la sortie de bâtiment ;
  • la figure 3 est une vue schématique, en coupe longitudinale, de l'un des tronçons du conduit de fumisterie selon l'invention ;
  • la figure 4 est une vue de dessus du tronçon de conduit illustré sur la figure 3 ;
  • la figure 5 est une vue de côté de l'une des pattes entretoises qui équipent la bordure supérieure du tronçon de conduit illustré sur la figure 3, constituant la liaison mécanique entre le tube central, le tube de maintien et le tube périphérique ;
  • la figure 6 est une vue de côté de l'une des pattes entretoises qui équipent la bordure inférieure du tronçon de conduit illustré sur la figure 3, constituant la liaison mécanique entre le tube de maintien et le tube périphérique ;
  • la figure 7 est une vue schématique, en coupe longitudinale, d'une partie d'un second mode de réalisation d'une installation de chauffage selon l'invention, comprenant un appareil de chauffage à bois et la partie inférieure du conduit de fumisterie associé ;
  • la figure 8 est une vue schématique, en coupe longitudinale, d'une partie d'un troisième mode de réalisation possible d'une installation de chauffage selon l'invention, comprenant encore un appareil de chauffage à bois et la partie inférieure du conduit de fumisterie associé.
The invention will be further illustrated, without being limited in any way, by the following description of several possible embodiments, given solely by way of example and represented in the appended drawings in which:
  • the figure 1 is a schematic view, in longitudinal section, of a part of a possible embodiment of the installation according to the invention, comprising a wood-burning appliance and the lower part of the associated chimney duct;
  • the figure 2 is a diagrammatic view, in longitudinal section, of another part of the heating installation according to the invention, comprising the upper part of the chimney duct and the building outlet;
  • the figure 3 is a schematic view, in longitudinal section, of one of the sections of the duct chimney according to the invention;
  • the figure 4 is a top view of the duct section shown on the figure 3 ;
  • the figure 5 is a side view of one of the struts that equip the upper edge of the duct section shown on the figure 3 constituting the mechanical connection between the central tube, the holding tube and the peripheral tube;
  • the figure 6 is a side view of one of the struts that equip the lower edge of the duct section shown on the figure 3 constituting the mechanical connection between the holding tube and the peripheral tube;
  • the figure 7 is a schematic view, in longitudinal section, of a part of a second embodiment of a heating installation according to the invention, comprising a wood-burning appliance and the lower part of the associated chimney duct;
  • the figure 8 is a diagrammatic view, in longitudinal section, of part of a third possible embodiment of a heating installation according to the invention, further comprising a wood burning appliance and the lower portion of the associated chimney duct.

L'installation de chauffage illustrée sur les figures 1 et 2 est constituée d'un appareil de chauffage à bois 1 (figure 1) à partir duquel s'étend vers le haut un conduit de fumisterie 2 (figures 1 et 2), jusqu'à une sortie de bâtiment 3 (figure 3).The heating system illustrated on the Figures 1 and 2 consists of a wood burning appliance 1 ( figure 1 ) from which extends upward a smoke duct 2 ( Figures 1 and 2 ), to a building exit 3 ( figure 3 ).

L'appareil de chauffage 1 consiste en un poêle ou insert de structure classique, utilisant des bûches ou des granulés de bois comme combustible.The heater 1 consists of a stove or insert of conventional structure, using logs or pellets as fuel.

Il comporte un foyer de combustion 4 au niveau de la partie supérieure duquel est ménagé un orifice 5 d'évacuation des produits de combustion (ici réalisé dans la face de dessus du foyer 4), et au niveau de la partie inférieure duquel est ménagé un orifice 6 d'entrée d'air comburant (ici réalisé dans la face de dessous du foyer 4).It comprises a combustion chamber 4 at the upper part of which is provided a discharge orifice 5 of the combustion products (here made in the top face of the hearth 4), and at the bottom of which is arranged a inlet 6 of combustion air inlet (here made in the bottom face of the hearth 4).

Le conduit de fumisterie 2, qui fait la liaison entre l'appareil de chauffage 1 et la sortie de bâtiment 3, est réalisé en plusieurs tronçons 2a, 2b, 2c, juxtaposés et raccordés ensemble de manière étanche et coaxiale.The conduit fettling 2, which makes the connection between the one heater and the vessel outlet 3 is formed in several sections 2 a, 2 b, 2 c, juxtaposed and connected together sealingly and coaxially.

Ce conduit 2 comporte :

  • un tube central 7 délimité par une surface extérieure 8 et par une surface intérieure 9 ; cette surface intérieure 9 définit une chambre centrale 9' faisant office de chambre d'évacuation des produits de combustion générés par l'appareil de chauffage 1 ;
  • un tube périphérique 10 au sein duquel est logé le tube central 7, délimité par une surface extérieure 11 et par une surface intérieure 12 ; ce tube périphérique 10 entoure le tube central 7 et il est disposé co-axialement à ce dernier ;
  • une couche 13 de matériau isolant, par exemple de la laine de roche, qui entoure le tube central 7 et qui est associée à un tube de maintien 14.
This duct 2 comprises:
  • a central tube 7 defined by an outer surface 8 and an inner surface 9; this inner surface 9 defines a central chamber 9 'serving as a discharge chamber combustion products generated by the heater 1;
  • a peripheral tube 10 in which is housed the central tube 7, defined by an outer surface 11 and an inner surface 12; this peripheral tube 10 surrounds the central tube 7 and is disposed co-axially thereto;
  • a layer 13 of insulating material, for example rock wool, which surrounds the central tube 7 and which is associated with a holding tube 14.

La surface intérieure 15 de la couche de matériau isolant 13 est en appui sur la surface extérieure 8 du tube central 7 ; et sa surface extérieure 16 est en appui contre la surface intérieure 17 du tube de maintien 14.The inner surface 15 of the layer of insulating material 13 bears on the outer surface 8 of the central tube 7; and its outer surface 16 bears against the inner surface 17 of the holding tube 14.

Cette surface extérieure 16 de la couche isolante 13 est située à distance de la surface intérieure 12 du tube périphérique 10.
Egalement, le tube de maintien 14 est situé à distance de la surface intérieure 12 du tube périphérique 10. Sa surface extérieure 18 définit, avec la surface intérieure 12 du tube périphérique 10, une chambre annulaire périphérique 19 faisant office de chambre d'alimentation en air comburant de l'appareil de chauffage 1.This outer surface 16 of the insulating layer 13 is located at a distance from the inner surface 12 of the peripheral tube 10.
Also, the holding tube 14 is located at a distance from the inner surface 12 of the peripheral tube 10. Its outer surface 18 defines, with the inner surface 12 of the peripheral tube 10, a peripheral annular chamber 19 acting as a feed chamber. Combustion air of the heater 1.

Le diamètre du tube central 7 peut être de l'ordre de 80 à 200 mm ; l'épaisseur de la couche de matériau isolant 13 peut être de l'ordre de 20 mm ; et l'épaisseur de la chambre annulaire 19 peut être de l'ordre de 30 mm.The diameter of the central tube 7 may be of the order of 80 to 200 mm; the thickness of the layer of insulating material 13 may be of the order of 20 mm; and the thickness of the annular chamber 19 may be of the order of 30 mm.

Le tube de maintien 14 est lié mécaniquement au tube central 7 et au tube périphérique 10.
Ces différents tubes 7, 10, 14 sont réalisés en matériau métallique, par exemple en acier inoxydable ou en acier galvanisé.The holding tube 14 is mechanically connected to the central tube 7 and to the peripheral tube 10.
These different tubes 7, 10, 14 are made of metal material, for example stainless steel or galvanized steel.

Dans une variante de réalisation, ce tube de maintien 14 peut ne pas être présent.In an alternative embodiment, this holding tube 14 may not be present.

L'extrémité inférieure 20 du conduit 2, et plus particulièrement son tronçon inférieur 2a, comporte un prolongement 21 pour le raccordement du tube central 7 (et de la chambre centrale 9') à l'orifice supérieur 5 du foyer 4 de l'appareil de chauffage 1, et un prolongement 22 pour le raccordement du tube périphérique 10 (et de la chambre périphérique 19) à l'orifice inférieur 6 du foyer 4 de l'appareil de chauffage.
D'autre part, l'extrémité supérieure 23 du conduit 2, et plus particulièrement son tronçon supérieur 2c, aboutit à la sortie de bâtiment 3 de la manière décrite plus loin.The lower end 20 of conduit 2, and particularly its lower portion 2a, comprises an extension 21 for connecting the central tube 7 (and the central chamber 9 ') to the upper opening 5 of the hearth 4 of the heater 1, and an extension 22 for connecting the peripheral tube 10 (and the peripheral chamber 19) to the lower port 6 of the furnace 4 of the heater.
On the other hand, the upper end 23 of the duct 2, and more particularly its upper portion 2c , leads to the building outlet 3 in the manner described below.

Entre les deux tronçons inférieur 2a et supérieur 2c, le conduit 2 peut comporter un ou plusieurs tronçons intermédiaires 2b.Between the two sections is less than 2 and greater than 2 c, the conduit 2 can comprise one or more intermediate portions 2 b.

L'un de ces tronçons intermédiaire 2b est illustré isolément sur les figures 3 et 4.One of these intermediate sections 2b is illustrated in isolation on the Figures 3 and 4 .

Sur ces figures 3 et 4, on remarque les moyens assurant la liaison entre le tube 14 qui maintien la couche isolante 13 et les tubes central 7 et périphérique 10 (ces moyens de liaison sont représentés isolément sur les figures 5 et 6).On these Figures 3 and 4 , we notice the means ensuring the connection between the tube 14 which maintains the insulating layer 13 and the central tube 7 and peripheral 10 (these connecting means are shown in isolation on the Figures 5 and 6 ).

Ce tronçon intermédiaire 2b est délimité par une bordure supérieure 24 (en l'occurrence de type mâle) et par une bordure inférieure 25 (ici de type femelle), complémentaires entre elles pour permettre le raccordement par emboitement des différents tronçons juxtaposés.
Il comprend un tronçon de tube central 7, un tronçon de couche isolante 13, un tronçon de tube de maintien 14 pour cette couche isolante 13, et un tronçon de tube périphérique 10.This intermediate portion 2b is delimited by an upper edge 24 (in this case of the male type) and a lower edge 25 (here female type), complementary to each other to allow connection by interlocking different juxtaposed sections.
It comprises a central tube section 7, an insulating layer section 13, a holding tube section 14 for this insulating layer 13, and a peripheral tube section 10.

Au niveau de la bordure supérieure 24, ce tronçon intermédiaire de conduit 2b comporte une pluralité de pattes entretoises 26 (en l'occurrence au nombre de trois), régulièrement réparties, adaptées pour solidariser ensemble le tube central 7, le tube de maintien 14 et le tube périphérique 10.At the level of the upper edge 24, this intermediate section of duct 2b comprises a plurality of spacer tabs 26 (in this case three in number), regularly distributed, adapted to fasten together the central tube 7, the holding tube 14 and the peripheral tube 10.

Chaque patte entretoise 26 (figure 5) consiste en un plat métallique 27, muni de trois ailes monobloc 28, 29 et 30 qui s'étendent à l'équerre. Ces trois ailes 28, 29 et 30 sont obtenues par découpage/pliage ; elles sont parallèles entre elles, et elles sont espacées les unes des autres selon une distance adaptée pour permettre leur soudage, l'une 28 sur le tube central 7, une autre 29 sur le tube de maintien 14 et une autre 30 sur le tube périphérique 10, de manière à solidariser ces trois tubes entre eux, tout en conservant leur espacement radial.
Les ailes d'extrémité 30 et 28 des pattes entretoises 26 sont soudées respectivement sur la face intérieure 12 du tube périphérique 10 et sur la face extérieure 8 du tube central 7 ; l'aile médiane 29 est soudée sur la face extérieure 18 du tube de maintien 14.Each spacer tab 26 ( figure 5 ) consists of a metal plate 27, provided with three monobloc wings 28, 29 and 30 which extend to the square. These three wings 28, 29 and 30 are obtained by cutting / folding; they are parallel to each other, and they are spaced from each other by a distance adapted to allow their welding, one 28 on the central tube 7, another 29 on the holding tube 14 and another 30 on the peripheral tube 10, so as to secure these three tubes together, while maintaining their radial spacing.
The end flanges 30 and 28 of the spacer tabs 26 are respectively welded to the inner face 12 of the peripheral tube 10 and to the outer face 8 of the central tube 7; the middle wing 29 is welded to the outer face 18 of the holding tube 14.

Le plat 27 s'étend perpendiculairement à l'axe du tronçon de conduit 2b et dans le plan de l'extrémité supérieure de ce tronçon de conduit 2b.The plate 27 extends perpendicularly to the axis of the pipe section 2b and in the plane of the upper end of this pipe section 2b .

Au niveau de la bordure inférieure 25, le tronçon intermédiaire de conduit 2b comporte une pluralité de pattes entretoises 31 (en l'occurrence au nombre de trois), régulièrement réparties, adaptées pour solidariser ensemble le tube de maintien 14 et le tube périphérique 10.At the lower edge 25, the intermediate section of duct 2b comprises a plurality of spacer tabs 31 (in this case three in number), regularly distributed, adapted to secure together the retaining tube 14 and the peripheral tube 10 .

Chaque patte entretoise 31 (figure 6) consiste en un plat métallique 32, muni de deux ailes 33 et 34 qui s'étendent à l'équerre. Ces deux ailes 33 et 34 sont obtenues par découpage/pliage ; elles sont parallèles entre elles et sont espacées l'une de l'autre selon une distance adaptée pour permettre leur soudage, l'une 33 sur la face extérieure 18 du tube de maintien 14, et l'autre 34 sur la face intérieure 12 du tube périphérique 10, de manière à solidariser ces deux tubes entre eux, tout en conservant leur espacement radial.Each spacer tab 31 ( figure 6 ) consists of a metal plate 32, provided with two wings 33 and 34 which extend to the square. These two wings 33 and 34 are obtained by cutting / folding; they are parallel to each other and are spaced from each other by a distance adapted to allow their welding, one 33 on the outer face 18 of the holding tube 14, and the other 34 on the inner face 12 of the peripheral tube 10, so as to secure these two tubes together, while maintaining their radial spacing.

En partie supérieure, on remarque que l'extrémité supérieure de la couche de matériau isolant 13 vient en appui contre le plat 27 des pattes entretoises 26 ; en partie inférieure, l'espace entre le tube central 7 et le tube de maintien 14 est libre, dépourvu d'élément de patte entretoise.In the upper part, it is noted that the upper end of the layer of insulating material 13 bears against the flat 27 of the spacer tabs 26; in the lower part, the space between the central tube 7 and the holding tube 14 is free, devoid of spacer leg member.

Des pattes entretoises identiques ou similaires peuvent être prévues au niveau des extrémités supérieures et inférieures des tronçons supérieur et inférieur de conduit 2a, 2c.Identical or similar spacers tabs may be provided at upper and lower ends of the upper and lower sections of conduit 2 a, 2 c.

Les extrémités supérieure 24 et inférieure 25 du tronçon de conduit 2b sont adaptées pour permettre l'emboitement étanche des différents tronçons de conduit juxtaposés.
Lors de cet emboitement, le plat 27 des pattes entretoises 26 d'un tronçon sous-jacent vient en appui, ou pratiquement en appui, contre l'extrémité inférieure de la couche de matériau isolant 13 du tronçon situé directement au-dessus.
L'emboitement correspondant est verrouillé de manière classique au moyen de colliers de serrage 35.The upper ends 24 and lower 25 of the pipe section 2b are adapted to allow sealing engagement of the different juxtaposed pipe sections.
During this interlocking, the flat 27 of the spacer tabs 26 of an underlying section bears, or substantially in support, against the lower end of the layer of insulating material 13 of the section located directly above.
The corresponding interlock is locked in conventional manner by means of clamps 35.

Au niveau de son extrémité supérieure, le conduit 2 aboutit à la sortie de bâtiment 3, de la manière illustrée sur la figure 2.At its upper end, the conduit 2 leads to the building exit 3, as shown in FIG. figure 2 .

Cette sortie de bâtiment 3 comprend une ceinture de parois latérales 36 dont l'extrémité supérieure comporte une plaque de fermeture 37 munie d'une ouverture centrale 38 et surmontée d'un chapeau pare-pluie 39.This building outlet 3 comprises a belt of side walls 36 whose upper end comprises a closure plate 37 provided with a central opening 38 and surmounted by a rain cap 39.

Le tronçon terminal de conduit 2c est fixé à la ceinture de parois 36 par l'intermédiaire de moyens de liaison 40 adaptés (qui relient la face intérieure de la ceinture de parois 36 et la face extérieure du tube périphérique 10).
En outre, l'extrémité supérieure du tube central 7 passe au travers de l'ouverture 38 (dont les sections sont identiques, au jeu près), par l'intermédiaire d'un manchon adapté; et cette extrémité supérieure de tube déborde légèrement au-delà de la face de dessus de la plaque de fermeture 37.
A cet endroit, la couche de matière isolante 13 et son tube de maintien 14 s'étendent jusqu'au dessous de la plaque de fermeture 37 ; plus précisément, l'extrémité supérieure de la couche de matière isolante 13 vient en contact ou pratiquement en contact avec la face de dessous de la plaque de fermeture 37. On supprime ainsi les ponts thermiques au niveau de l'extrémité supérieure du tube central 7, ce qui permet de limiter très sensiblement les phénomènes de condensation et de bistrage dans la partie supérieure de ce tube central 7 (ces phénomènes pouvant entrainer une corrosion susceptible, en cas de percement, de provoquer une aspiration des fumées via le canal de prise d'air comburant).
De son côté, l'extrémité supérieure 41 du tube périphérique 10 s'étend à distance de la plaque de fermeture 37, de manière à ce que l'ouverture supérieure de la chambre annulaire 19 ne rencontre pas d'obstacle pour le prélèvement d'air comburant à l'intérieur du volume de la sortie de bâtiment 3, et donc de manière à limiter les pertes de charge au sein de cette chambre 19. La distance entre l'extrémité supérieure 41 du tube périphérique 10 et la face de dessous de la plaque de fermeture 37 peut être comprise entre 40 et 60 cm ; elle est avantageusement de l'ordre de 50 cm.The end section of duct 2c is fixed to the wall belt 36 by means of connecting means 40 adapted (which connect the inner face of the wall belt 36 and the outer face of the peripheral tube 10).
In addition, the upper end of the central tube 7 passes through the opening 38 (whose sections are identical, with the game), via a suitable sleeve; and this upper tube end protrudes slightly beyond the top face of the closure plate 37.
At this point, the layer of insulating material 13 and its holding tube 14 extend to below the closure plate 37; more specifically, the upper end of the layer of insulating material 13 comes into contact or substantially in contact with the underside of the closure plate 37. The thermal bridges are thus eliminated at the upper end of the central tube 7 , which makes it possible to very substantially limit the phenomena of condensation and bistrage in the upper part of this central tube 7 (these phenomena may cause corrosion likely, in the event of a breakthrough, to cause a flue gas suction via the intake channel. combustion air).
On its side, the upper end 41 of the peripheral tube 10 extends away from the closure plate 37, so that the upper opening of the annular chamber 19 does not encounter any obstacle for the removal of combustion air within the volume of the building outlet 3, and thus to limit the pressure drops within this chamber 19. The distance between the upper end 41 of the peripheral tube 10 and the underside of the the closure plate 37 may be between 40 and 60 cm; it is advantageously of the order of 50 cm.

En outre au moins une ouverture 42 est prévue dans la ceinture de parois 36 pour assurer l'entrée d'air neuf au sein de son volume interne.
Cette ouverture 42 est ménagée entre l'extrémité supérieure de la ceinture de parois 36 et la plaque de fermeture 37. Plus précisément, cette plaque de fermeture 37 est montée sur l'extrémité de la ceinture de parois 36 par l'intermédiaire de pattes (non visibles sur la figure 2), régulièrement réparties ; ces pattes permettent d'écarter légèrement la plaque 37 de la bordure d'extrémité supérieure de la ceinture 36, afin d'obtenir l'ouverture 42 recherchée (qui est ici périphérique).
La flèche d'orientation 42' sur la figure 2, montre le passage d'air neuf depuis l'extérieur, dans le volume interne de la ceinture de parois 36, pour l'alimentation de la chambre annulaire 19.In addition at least one opening 42 is provided in the wall belt 36 to ensure the entry of fresh air within its internal volume.
This opening 42 is formed between the upper end of the wall belt 36 and the closure plate 37. More specifically, this closure plate 37 is mounted on the end of the wall belt 36 by means of tabs ( not visible on the figure 2 ), regularly distributed; these tabs allow to slightly spread the plate 37 of the upper end edge of the belt 36, to obtain the desired opening 42 (which is here peripheral).
The orientation arrow 42 'on the figure 2 , shows the passage of fresh air from outside, in the internal volume of the wall belt 36, for feeding the annular chamber 19.

A l'usage, une telle installation de chauffage, avec le tube central 7 du conduit 2 isolé extérieurement par la couche isolante 13, limite voire évite la formation de condensation sur la paroi intérieure 9 dudit tube 7, ce qui limite très largement la possibilité de formation de bistre.In use, such a heating installation, with the central tube 7 of the duct 2 externally insulated by the insulating layer 13, limits or even prevents the formation of condensation on the inner wall 9 of said tube 7, which greatly limits the possibility of bistre training.

Dans le mode de réalisation de la figure 1, le conduit vertical 2 est placé a l'aplomb de l'appareil de chauffage 1 et il s'étend co-axialement à l'orifice 5 de sortie des produits de combustion, ménagé dans la face de dessus du foyer 4.
Le prolongement inférieur 21 du tube central 7 (et de la chambre centrale 9') consiste en un tuyau métallique qui s'étend verticalement et de manière concentrique audit tube central 7, jusqu'à l'orifice 5.
De son côté, le prolongement inférieur 22 du tube périphérique 10 (et de la chambre périphérique 19) s'étend vers le bas, sur le côté de l'appareil de chauffage 1. Ce prolongement 22 consiste en un tuyau métallique dont le tronçon supérieur 22a est connecté à une ouverture 43 ménagée dans la paroi du tube périphérique 10 ; ce tronçon supérieur 22a se prolonge vers le bas par un tronçon médian vertical 22b, qui se prolonge lui-même par un tronçon terminal 22c coudé, qui vient se raccorder à l'orifice 6 ménagé dans la face de dessous du foyer 4.
Au niveau de l'extrémité inférieure du tube périphérique 10, sous le niveau de l'ouverture 43, la chambre annulaire périphérique 19 comporte des moyens de fermeture 44.
Sous ces moyens de fermeture 44, on remarque que le tube périphérique 10 se prolonge, jusqu'à la face de dessus de l'appareil de chauffage 1, par une chemise 45. Cette chemise 45 est concentrique au prolongement 21 du tube central 7 ; elle fait office d'élément d'habillage et de protection.
Dans la partie supérieure de la chemise 45, on remarque la présence d'ouvertures d'aération 46.In the embodiment of the figure 1 the vertical duct 2 is placed in line with the heating apparatus 1 and extends co-axially to the outlet orifice 5 of the combustion products, formed in the top face of the hearth 4.
The lower extension 21 of the central tube 7 (and of the central chamber 9 ') consists of a metal pipe which extends vertically and concentrically to said central tube 7, to the orifice 5.
On its side, the lower extension 22 of the peripheral tube 10 (and the peripheral chamber 19) extends downwards, on the side of the heater 1. extension 22 consists of a metal pipe of which the upper section 22 a is connected to an opening 43 formed in the wall of peripheral tube 10; this upper portion 22 a extends downwardly through a vertical median section 22 b, which extends itself by an end section 22 c bent, which is to be connected to the orifice 6 provided in the underside of the hearth 4 .
At the lower end of the peripheral tube 10, below the level of the opening 43, the peripheral annular chamber 19 comprises closure means 44.
Under these closing means 44, it is noted that the peripheral tube 10 extends, to the top face of the heater 1, by a liner 45. This liner 45 is concentric to the extension 21 of the central tube 7; it acts as an element of dressing and protection.
In the upper part of the jacket 45, the presence of ventilation openings 46 is noted.

La figure 7 illustre une variante de réalisation possible, dans laquelle le conduit vertical 2 est placé sur l'arrière de l'appareil de chauffage 1.
Ici, le prolongement inférieur 21' du tube central 7 consiste en un tuyau métallique comprenant - un tronçon supérieur 21'a connecté à une ouverture 47 ménagée dans la paroi dudit tube central 7, et - un tronçon inférieur 21'b qui s'étend verticalement, à l'aplomb de l'orifice supérieur 5 du foyer 4, pour venir se connecter sur cet orifice 5.
Le tube central 7 comporte des moyens de fermeture 48, ménagés sous le niveau de l'ouverture de connexion 47.
De son côté, le tube périphérique 10, et la chambre annulaire 19 associée, comportent également des moyens de fermeture 49, sous le niveau des moyens de fermeture précités 48 du tube central 7 ; et ces moyens de fermeture 49 comportent une ouverture centrale 50 (centrée sur l'axe du conduit 2), pour la connexion du prolongement inférieur 22' du tube 10 et de la chambre périphérique 19.
Ce prolongement 22' consiste en un tuyau métallique dont le tronçon supérieur 22'a s'étend verticalement, à l'aplomb du conduit 2, suivi d'un tronçon terminal 22'b coudé, qui vient se raccorder à l'orifice 6 ménagé dans la face de dessous du foyer 4.The figure 7 illustrates a possible alternative embodiment, wherein the vertical duct 2 is placed on the rear of the heater 1.
Here, the lower extension 21 'of the central tube 7 consists of a metal pipe comprising - an upper section 21' is connected to an opening 47 formed in the wall of said central tube 7, and - a lower section 21 'b which extends vertically, in line with the upper orifice 5 of the hearth 4, to connect to this orifice 5.
The central tube 7 comprises closure means 48, formed below the level of the connection opening 47.
For its part, the peripheral tube 10, and the associated annular chamber 19, also comprise closure means 49, below the level of the aforementioned closure means 48 of the central tube 7; and these closure means 49 comprise a central opening 50 (centered on the axis of the duct 2), for the connection of the lower extension 22 'of the tube 10 and the peripheral chamber 19.
This extension 22 'consists of a metal pipe whose upper section 22' has extends vertically, directly above the pipe 2, followed by an end section 22 ' b bent, which is connected to the orifice 6 formed in the underside of the fireplace 4.

Dans cette variante de réalisation, on remarque la présence d'une chemise d'habillage 51 qui prolonge vers le bas l'extrémité inférieure du tube périphérique 10, jusqu'au sol. Cette chemise 51 s'étend co-axialement au tube périphérique 10, sous ses moyens de fermeture 49 ; elle se présente sous la forme d'un tube vertical, de préférence métallique, au sein duquel est logé le tronçon vertical supérieur 22'a du prolongement 22' (ainsi qu'une partie du tronçon terminal 22'b).
Au niveau de son extrémité supérieure la chemise 51 comporte des ouvertures d'aération 52. Au niveau de son extrémité inférieure, elle comporte une première ouverture 53 adaptée pour le passage de la partie terminale coudée 22'b du prolongement 22', ainsi qu'une seconde ouverture 54, permettant le montage de cette partie terminale 22'b (en particulier pour l'accessibilité aux colliers de raccordement de certains de ses tronçons constitutifs).
La seconde ouverture 54 est de préférence ménagée de manière diamétralement opposée à la première ouverture 53.In this embodiment, there is the presence of a dressing jacket 51 which extends downwardly the lower end of the peripheral tube 10 to the ground. This sleeve 51 extends co-axially to the peripheral tube 10, under its closure means 49; it is in the form of a vertical tube, preferably metal, in which is housed the upper vertical section 22 'a of the extension 22 (and part of the end portion 22' b).
At its upper end the liner 51 has ventilation openings 52. At its lower end, it comprises a first opening 53 adapted for the passage of the bent end portion 22 ' b of the extension 22 ', and a second opening 54, for mounting this end portion 22'b (in particular for accessibility to the connection clamps of some of its constituent sections).
The second opening 54 is preferably arranged diametrically opposite to the first opening 53.

Cette chemise 51 a pour fonction de protéger le tube d'air 22' et de former un support au sol pour le conduit 2 ; elle améliore également l'esthétique de l'installation.This jacket 51 serves to protect the air tube 22 'and form a ground support for the conduit 2; it also improves the aesthetics of the installation.

La figure 8 illustre encore une autre variante de réalisation possible, dans laquelle le conduit vertical 2 est placé sur l'arrière de l'appareil de chauffage 1.
Ici, le prolongement inférieur 21" du tube central 7 consiste en un tuyau métallique horizontal faisant la liaison entre une ouverture 55 ménagée dans la paroi dudit tube central 7, et un orifice 5' ménagé dans la partie supérieure de la face arrière du foyer 4. Le reste de la structure est identique ou similaire à ce qui a été décrit ci-dessus en relation avec la figure 7.
On retrouve un tube central 7 comportant des moyens de fermeture 56, ménagés sous le niveau de l'ouverture de connexion 55.
De son côté, le tube périphérique 10, et la chambre annulaire 19 associée, comportent également des moyens de fermeture 57, sous le niveau des moyens de fermeture précités 56 du tube central 7 ; et ces moyens de fermeture 57 comportent une ouverture centrale 58 (centrée sur l'axe du conduit 2), pour la connexion du prolongement inférieur 22" du tube 10 et de la chambre périphérique 19.
Ce prolongement 22" consiste en un tuyau métallique dont le tronçon supérieur 22"a s'étend verticalement, à l'aplomb du conduit 2, suivi d'un tronçon terminal 22"b coudé, qui vient se raccorder à l'orifice 6 ménagé dans la face de dessous du foyer 4.The figure 8 illustrates yet another possible embodiment, wherein the vertical duct 2 is placed on the rear of the heater 1.
Here, the lower extension 21 "of the central tube 7 consists of a horizontal metal pipe making the connection between an opening 55 formed in the wall of said central tube 7, and an orifice 5 'formed in the upper part of the rear face of the hearth 4 The rest of the structure is identical or similar to what has been described above in relation to the figure 7 .
There is a central tube 7 having closure means 56 formed below the level of the connection opening 55.
For its part, the peripheral tube 10, and the associated annular chamber 19, also include closure means 57, below the level of the aforementioned closure means 56 of the central tube 7; and these closing means 57 comprise a central opening 58 (centered on the axis of the duct 2), for the connection of the lower extension 22 "of the tube 10 and the peripheral chamber 19.
This extension 22 "consists of a metal pipe whose upper portion 22" has extends vertically, directly above the duct 2, followed by an end section 22 "b bent, which is connected to the orifice 6 formed in the underside of the fireplace 4.

Ici encore une chemise d'habillage 59 prolonge vers le bas l'extrémité inférieure du tube périphérique 10, jusqu'au sol. Cette chemise 59 s'étend co-axialement au tube périphérique 10, sous ses moyens de fermeture 57; elle se présente sous la forme d'un tube vertical, de préférence métallique, au sein duquel est logé le tronçon vertical supérieur 22"a du prolongement 22".
Au niveau de son extrémité supérieure la chemise 59 comporte des ouvertures d'aération 60. Au niveau de son extrémité inférieure, elle comporte une première ouverture 61 adaptée pour le passage de la partie terminale coudée 22"b du prolongement 22", ainsi qu'une seconde ouverture 62, permettant le montage de cette partie terminale 22"b (en particulier pour l'accessibilité aux colliers de raccordement de certains de ses tronçons constitutifs).
La seconde ouverture 62 est de préférence ménagée de manière diamétralement opposée à la première ouverture 61.Here again a dressing jacket 59 extends downwardly the lower end of the peripheral tube 10, to the ground. This jacket 59 extends co-axially to the peripheral tube 10, under its closure means 57; it is in the form of a vertical tube, preferably metal, in which is housed the upper vertical section 22 "a of the extension 22 '.
At its upper end the jacket 59 has ventilation openings 60. At its lower end, it comprises a first opening 61 adapted for the passage of the bent end portion 22 " b of the extension 22", as well as a second opening 62, allowing the mounting of this end portion 22 " b (in particular for accessibility to the connection clamps of some of its constituent sections).
The second opening 62 is preferably arranged diametrically opposite to the first opening 61.

Claims (10)

  1. A heating installation comprising - a wood heating appliance (1), of the stove or insert type, including a combustion furnace (4), - a building outlet (3), and - a connection duct (2) between these two elements, said duct (2) includes:
    - a central tube (7) delimited by an external surface (8), and by an internal surface (9) defining a central chamber (9') for the evacuation of the combustion products generated by said wood heating appliance (1), and
    - a peripheral tube (10) within which is housed said central tube (7), which peripheral tube (10) being delimited by an external surface (11) and by an internal surface (12), said central tube (7) and said peripheral tube (10) defining between them a peripheral annular chamber (19), for the supply of said wood heating appliance (1) with combustion air, the lower ends (20) of said central (7) and peripheral (10) tubes including extensions (21, 21', 21"; 22, 22', 22") for the connection thereof to the upper and lower parts, respectively, of the furnace (4) of said wood heating appliance (1),
    and the external surface (8) of said central tube (7) being covered with a layer of insulating material (13) delimited by an internal surface (15) in rest against the external surface (8) of said central tube (7), and by an external surface (16) located remote from the internal surface (12) of said peripheral tube (10), to form said peripheral chamber (19),
    characterized in that it includes a building outlet (3) comprising a belt of lateral walls (36) associated with an upper closing plate (37) in which is formed an opening (38) for the passage of the end of said central tube (7) of said connection duct (2), said layer of insulating material (13) of said duct (2) extending up to under said closing plate (37), the internal face of said belt of walls (36) including means (40) for the fixation of said peripheral tube (10) of said duct (2), the upper end (41) of said peripheral tube (10) extending remote from the bottom face of said closing plate (37), and at least one opening (42) being formed in said belt of walls (36), to ensure the entrance of new air in the volume delimited by said belt of walls (36).
  2. Installation according to claim 1, characterized in that the external surface (16) of the layer of insulating material (13) of said duct (2) is in rest against the internal surface (17) of a holding tube (14), the external surface (18) of which defines said peripheral chamber (19) with the internal surface (12) of said peripheral tube (10), which holding tube (14) is mechanically connected, on the one hand to said central tube (7), and on the other hand, to said peripheral tube (10).
  3. Installation according to claim 2, characterized in that said duct (2) is made of several juxtaposed sections (2a, 2b, 2c), a lower one (2a) provided with said lower extensions (21, 21', 21"; 22, 22', 22") for the connection to the furnace (4) of said wood heating appliance (1), an upper one (2c), ending at said building outlet (3), possibly associated with one or several intermediate sections (2b), said duct sections (2a, 2b, 2c) each comprise an upper edge (24) and a lower edge (25) and are tightly connected to each other, said duct sections (2a, 2b, 2c) including a tube (14) for holding the layer of insulating material (13), which holding tube (14) is fastened to said central tube (7) and to said peripheral tube (10) by means of a plurality of welded spacing tabs (26, 31), distributed over the periphery of said upper edge (24) and of said lower edge (25).
  4. Installation according to claim 3, characterized in that said spacing tabs (26) provided at the upper edge (24) of the duct sections (2b) consist in single-piece metal flats (27) provided with three straight parallel wings (28, 29, 30) for the welding fastening thereof to said central tube (7), said peripheral tube (10) and said holding tube (14), and in that said spacing tabs (31) provided at the lower edge (25) of said duct sections (2b) consist in single-piece metal flats (32) provided with two square parallel wings (33, 34) for the welding fastening thereof to said peripheral tube (10) and said holding tube (14).
  5. Installation according to any one of claims 1 to 4, characterized in that the lower extension (21) of the central tube (7) consists in a metal pipe extending vertically, concentrically with respect to said central tube (7), up to the upper part of the furnace (4) of the heating appliance (1), in that the peripheral chamber (19) includes closing means (44) at the lower end thereof, and in that the lower extension (22) of said peripheral chamber (19) consists in a metal pipe - the upper section (22a) of which is connected to an opening (43) formed in the wall of said peripheral tube (10), - the median section (22b) of which extends vertically, non-concentrically with respect to said central tube (7), and - the terminal section (22c) of which connects at the lower part of the furnace (4) of the heating appliance (1).
  6. Installation according to any one of claims 1 to 4, characterized in that the lower extension (21') of the central tube (7) consists in a metal pipe - the upper section (21'a) of which is connected to an opening (47) formed in the wall of said central tube (7), and - the lower section (21'b) of which extends vertically, up to the upper part of the furnace (4) of the heating appliance (1), said central tube (7) including closing means (48), provided under the level of said opening (47) for the connection of said lower extension (21'), and in that said peripheral chamber (19) includes closing means (49), provided under the level of said closing means (48) of said central tube (7), which closing means (49) of said peripheral chamber (19) include an opening (50), centred to the axis of said central tube (7), for the connection of the lower extension (22') of said peripheral chamber (19) that consists in a metal pipe whose upper section (22'a) extends vertically up to a terminal section (22'b) connecting at the lower part of the furnace (4) of the heating appliance (1).
  7. Installation according to any one of claims 1 to 4, characterized in that the lower extension (21") of the central tube (7) consists in a metal pipe connected to an opening (55) formed in the wall of said central tube (7), which pipe (21") extends horizontally up to the upper part of the furnace (4) of the heating appliance (1), said central tube (7) including closing means (56), under the level of said opening (55) for the connection of said horizontal extension (21"), and in that said peripheral chamber (19) includes closing means (57), provided under the level of said closing means (56) of said central tube (7), which closing means (57) of said peripheral chamber (19) include an opening (58) centred to the axis of said central tube (7) for the connexion of the lower extension (22") of said peripheral chamber (19) consisting in a metal pipe, the upper section (22"a) of which extends vertically up to a terminal section (22"b) connecting at the lower part of the furnace (4) of the heating appliance (1).
  8. Installation according to any one of claims 6 or 7, characterized in that the peripheral tube (10) is extended downward, under the level of the closing means (49, 57) thereof, by a covering jacket (51, 59), within which is housed at least the vertical section (22'a, 22"a) of said lower extension (22', 22") of the peripheral chamber (19), which covering jacket (51, 59) includes a first lower opening (53, 61) adapted for the passage of the terminal part (22'b, 22"b) of said lower extension (22', 22") of said peripheral chamber (19), and a second lower opening (54, 62), adapted for the mounting of said terminal part of extension (22'b, 22"b).
  9. Installation according to any one of claims 1 to 8, characterized in that the upper end of the central tube (7) passes through said opening (38) of the closing plate (37), the sections of which are identical, to within the clearance, through a suitable sleeve, and in that said closing plate (37) is mounted on the end of the belt of walls (36) through regularly distributed tabs, which allow slightly spacing said plate (37) from the upper end edge of said belt (36), in order to obtain said new air entrance opening (42).
  10. Installation according to any one of claims 1 to 9, characterized in that, within the belt of walls (36) of the building outlet (3), the distance separating the upper end (41) of the peripheral tube (10) from the bottom face of the closing plate (37) is comprised between 40 and 60 cm.
EP12305605.3A 2011-06-01 2012-05-31 Heating installation comprising a wood-burning heater appliance, a building outlet and a connecting conduit Active EP2530380B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12305605T PL2530380T3 (en) 2011-06-01 2012-05-31 Heating installation comprising a wood-burning heater appliance, a building outlet and a connecting conduit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1154837A FR2976050B1 (en) 2011-06-01 2011-06-01 HEATING FACILITY COMPRISING A WOOD HEATING APPARATUS, A BUILDING OUTLET, AND A CONNECTING PIPE

Publications (2)

Publication Number Publication Date
EP2530380A1 EP2530380A1 (en) 2012-12-05
EP2530380B1 true EP2530380B1 (en) 2016-11-23

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Application Number Title Priority Date Filing Date
EP12305605.3A Active EP2530380B1 (en) 2011-06-01 2012-05-31 Heating installation comprising a wood-burning heater appliance, a building outlet and a connecting conduit

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EP (1) EP2530380B1 (en)
FR (1) FR2976050B1 (en)
PL (1) PL2530380T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3008482B1 (en) * 2013-07-12 2017-12-08 Poujoulat IMPROVEMENT TO HEATING FACILITIES WITH SMOKE EXHAUST DUCT WITH COMBUSTION AIR ARRIVAL
FR3048488B1 (en) 2016-03-03 2019-11-22 Poujoulat HEATING INSTALLATION FOR A BUILDING
DE102017112874A1 (en) * 2017-06-12 2018-12-13 Schiedel Gmbh Connection device, system of an intermediate plate and a connection device, apparatus for operating a fireplace and a method for connecting a double pipe with a fireplace
FR3101936B1 (en) * 2019-10-14 2022-05-13 Poujoulat Equipment for connecting to the outside air at least one thermodynamic air appliance
FR3105363B1 (en) * 2019-12-19 2022-09-09 Poujoulat Trim casing and flue pipe comprising such a trim casing, intended to be installed between a smoke outlet of a heating device and an insulated flue

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Publication number Priority date Publication date Assignee Title
US3226135A (en) * 1962-10-31 1965-12-28 Epstein Saul Triple walled vent pipe
SE300297B (en) * 1965-05-31 1968-04-22 T Thoren
ATA478279A (en) * 1979-07-09 1984-05-15 Loeblich Kessel App HEATING SYSTEM, ESPECIALLY WITH GAS FIRE
US4608963A (en) * 1985-01-04 1986-09-02 Simpson Dura Vent Company, Inc. Thermally balanced air flow chimney
DE3615822A1 (en) * 1986-05-10 1987-11-12 Richard Vetter Apparatus for heating water, in particular hot-water boiler
CH678223A5 (en) * 1988-07-04 1991-08-15 Basten Maria Sibylle
FR2708650B1 (en) * 1993-08-06 1995-10-20 Poujoulat Sa Roof outlet with covering for chimney.
FR2756361B1 (en) * 1996-11-27 1998-12-31 Renson Francois DEVICE FOR THE EXHAUST OF COMBUSTION FUMES
DE29823836U1 (en) * 1998-07-03 2000-02-03 Wolf GmbH, 84048 Mainburg Roof duct with a heat protection tube for a heat generator
DE202005000691U1 (en) * 2005-01-14 2006-02-23 Tona Tonwerke Schmitz Gmbh Device for connection of flue pipe of fireplace to connection of air-flue gas system has screen with several centering elements installed concentrically around passage for flue pipe
US8408196B2 (en) * 2007-05-01 2013-04-02 M&G DuraVent, Inc. Ceiling support box with outside air inlet
FR2952094A1 (en) * 2009-10-30 2011-05-06 Poujoulat ROOF OUTPUT FOR SMOKE EXHAUST DUCT

Also Published As

Publication number Publication date
FR2976050A1 (en) 2012-12-07
FR2976050B1 (en) 2015-02-27
EP2530380A1 (en) 2012-12-05
PL2530380T3 (en) 2017-05-31

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