EP2085694B1 - Poêle à bois commandé électroniquement et méthode de contrôle - Google Patents

Poêle à bois commandé électroniquement et méthode de contrôle Download PDF

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Publication number
EP2085694B1
EP2085694B1 EP09151419.0A EP09151419A EP2085694B1 EP 2085694 B1 EP2085694 B1 EP 2085694B1 EP 09151419 A EP09151419 A EP 09151419A EP 2085694 B1 EP2085694 B1 EP 2085694B1
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EP
European Patent Office
Prior art keywords
air
valve
combustion
primary
combustion chamber
Prior art date
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EP09151419.0A
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German (de)
English (en)
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EP2085694A3 (fr
EP2085694A2 (fr
Inventor
Vagn Hvam Pedersen
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IHS INNOVATION APS
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IHS Innovation APS
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B60/00—Combustion apparatus in which the fuel burns essentially without moving
    • F23B60/02—Combustion apparatus in which the fuel burns essentially without moving with combustion air supplied through a grate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B80/00—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
    • F23B80/04—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for guiding the flow of flue gases, e.g. baffles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B90/00—Combustion methods not related to a particular type of apparatus
    • F23B90/04—Combustion methods not related to a particular type of apparatus including secondary combustion
    • 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
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/02—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air above the fire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/002—Regulating air supply or draught using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/007—Regulating air supply or draught using mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/06—Regulating air supply or draught by conjoint operation of two or more valves or dampers
    • F23N3/065—Regulating air supply or draught by conjoint operation of two or more valves or dampers using mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
    • F23N5/006—Systems for controlling combustion using detectors sensitive to combustion gas properties the detector being sensitive to oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/02—Closed stoves
    • F24B1/028—Closed stoves with means for regulating combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/185—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion
    • F24B1/187—Condition responsive controls for regulating combustion 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B5/00—Combustion-air or flue-gas circulation in or around stoves or ranges
    • F24B5/02—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves
    • F24B5/021—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves combustion-air circulation
    • F24B5/026—Supply of primary and secondary air for combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/13003—Energy recovery by thermoelectric elements, e.g. by Peltier/Seebeck effect, arranged in the combustion plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/02—Fail safe using electric energy accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2239/00—Fuels
    • F23N2239/02—Solid fuels

Definitions

  • the present invention relates to a method for controlling a woodburning stove and of the kind stated in the preamble of claim 1.
  • the invention furthermore concerns a electronic control for a woodburning stove and of the kind indicated in the preamble of claim 2.
  • the invention additionally concerns a woodburning stove of the kind indicated in the preamble of claim 6 with an electronic control according to the invention.
  • Modern woodburning stoves are often designed as a stove for firing with wood, coal, coke, briquettes or wood pellets as the stove includes mechanical control means for regulating supply of primary as well as secondary combustion air.
  • Primary combustion air is supplied through the grate, i.e. up through the fuel, while secondary combustion air is supplied directly to the combustion chamber of the stove in order to ensure combustion of the gasses developed in the combustion chamber.
  • DK 166 637 B1 discloses a woodburning stove of this type and where the control means include a thermal sensor disposed in the flue gas exhaust and controlled valve means connected therewith for controlling supply of primary and secondary combustion air to the combustion chamber.
  • the valve means are found at the back side of the stove in a separate wall part including valve openings that are connected with the ash chamber and an upper part of the combustion chamber and which are provided with the said sensor.
  • the valve means include damper plates that are adapted to be displaced relative to the valve openings and which also are control connected with operating arms arranged from operation from the front side of the stove, and valve plates adapted to be displaced in relation to the damper plates and which are mechanically control connected with the sensor.
  • the damper and valve plates are designed and mutually suspended in relation to the valve openings such that respective valve openings can be forcibly opened by forced control of the valve plates, and that the damper and valve plates for the secondary combustion air are designed and mutually suspended in relation to the valve opening such that it cannot be forcibly closed when the woodburning stove is hot, i.e. within the operating range of the sensor.
  • DK 1998 00198 U3 discloses a woodburning stove where the combustion with the intention of ensuring optimal environmental and economical combustion includes an electronic control of primary and secondary air supply.
  • the development concerns a woodburning stove where the door of the stove can be opened electronically and/or manually such that the woodburning stove can be used both as an open and as a closed fireplace.
  • This double function requires a separate regulation of the combustion air, why the opening/closing function interacts with the electronic control of the combustion air supply.
  • the purpose of the invention is to indicate a new and improved method for controlling a woodburning stove and an electronic control for a woodburning stove of the kind specified in the introduction, and which enables achieving a woodburning stove with a more correct combustion and at the same time a more environmentally optimal combustion such that the utilisation of the fuel of the stove is further optimised simultaneously.
  • the method according to the invention is characterised in that tertiary combustion air is supplied directly to the combustion chamber via a feed opening along a top side of the door, and that supply of primary, secondary and tertiary combustion air to the combustion chamber is controlled by the electronic control by means of separate control valves.
  • the invention also concerns an electronic control which is characterised in that the control is incorporated in a cabinet which is adapted to be disposed below the ash chamber and which includes a common air intake and one or more air valves with a damper plate, each drivingly connected with an electric motor arranged in the cabinet, the motor being control connected with the electronic control, the air valve or valves interacting with air ducts for supplying primary and secondary combustion air, the air ducts being disposed side by side at a rear side of the woodburning stove.
  • the electronic control according to the invention is suitably designed such that the cabinet includes three air valves, namely a first air valve interacting with a first air duct for supplying primary combustion air, a second air valve interacting with a second air duct for supplying secondary combustion air, and a third air valve interacting with a third air duct for supplying tertiary combustion air.
  • the control according to the invention may advantageously be designed such that the first air duct opens into the ash chamber above a possible ash pan, as primary combustion air is supplied to the combustion chamber through the grate bottom, and that the second air duct opens in the rear side of the combustion chamber spaced apart from the grate bottom, as secondary combustion air is supplied through a horizontal slotted opening at the transition to the inclining wall part of the combustion chamber.
  • the electronic control according to the invention is designed such that the third air duct opens into a horizontal slotted opening along the top side of a glass door at the front side of the combustion chamber, as tertiary combustion air, besides being mixed with rising gasses, is also used as scavenging air for keeping clean the inner side of the glass door.
  • the invention additionally concerns a woodburning stove including a combustion chamber which is downwards separated from an ash chamber by means of a grate bottom and having a walling at the rear and at both sides which upwards has an inclining forwards/upwards extending wall part, the combustion chamber upwards preferably via a reversing plate being connected with a chimney via a flue gas exhaust, the woodburning stove including an electronic control which includes a thermal sensor and a ⁇ -probe provided in the flue gas exhaust, the woodburning stove being characterised in that the control is incorporated in a cabinet which is adapted to be disposed below the ash chamber and which includes a common air intake and one or more air valves with a damper plate, each drivingly connected with an electric motor arranged in the cabinet, the motor being control connected with the electronic control, the air valve or valves interacting with air ducts for supplying primary and secondary combustion air, the air ducts being disposed side by side at a rear side of the woodburning stove.
  • the woodburning stove according to the invention is suitably designed such that the cabinet includes three air valves, namely a first air valve interacting with a first air duct for supplying primary combustion air, a second air valve interacting with a second air duct for supplying secondary combustion air, and a third air valve interacting with a third air duct for supplying tertiary combustion air.
  • the woodburning stove according to the invention is designed in a way known per se such that the first air duct opens into the ash chamber above a possible ash pan, as primary combustion air is supplied to the combustion chamber through the grate bottom, and that the second air duct opens in the rear side of the combustion chamber spaced apart from the grate bottom, as secondary combustion air is supplied through a horizontal slotted opening at the transition to the inclining wall part of the combustion chamber.
  • the third air duct opens into a horizontal slotted opening along the top side of a glass door at the front side of the combustion chamber, as tertiary combustion air, besides being mixed with rising gasses, is also used as scavenging air for keeping clean the inner side of the glass door.
  • the woodburning stove 2 shown in Fig. 1 is constructed of steel plate as a conventional convection oven with an external casing 4 and a combustion chamber 6 which is internally covered by a heat-resistant material 8 (walling), and which in a known way enclosed by a convection channel system 10, e.g. with inlet holes for cold air at the bottom of the casing 4 and with (not shown) discharge holes for heated air at the top of the casing 4.
  • a convection channel system 10 e.g. with inlet holes for cold air at the bottom of the casing 4 and with (not shown) discharge holes for heated air at the top of the casing 4.
  • the combustion chamber 6 is provided with a preferably circular grate bottom 12 which can be shaken or swung back and forth in a known way from the front side of the woodburning stove 2 by means of a (not shown) handle.
  • the front side of the combustion chamber 6 is provided with a stove door 14 with heat-resistant glass pane 16.
  • an ash compartment 18 under the grate bottom 12 there is provided an ash pan 20.
  • the ash compartment 18 is connected with a supply duct for primary combustion air 19 which via the ash compartment 18 is conducted up into the combustion chamber 6 through the grate bottom 12.
  • the combustion chamber 6 has an inclining, upwards/forwards extending wall part 22 which consists of ceramic material, and which at the rear and at each side is supported by the ceramic walling 8.
  • a reversing plate 24 is mounted behind the wall part 22 at an upper wall part 21 of the combustion chamber 6 such that the flue gas, cf. the arrow 23 from the combustion chamber 6, is forced downwards before it has access upwards to a flue gas exhaust 26 and chimney 28, respectively.
  • a horizontal, slotted feed opening 32 for secondary combustion air 33 which e.g. is supplied via a (not shown) vertical duct communicating downwards with a middle secondary regulating valve 34 in a common cabinet 36, which is located under the ash compartment 18 and which also contains a common electronic control 38.
  • a rear wall 5 of the combustion chamber 6 e.g. side by side, are arranged three vertical air ducts of which one middle air duct communicates downwards with the said middle regulating valve 34 regulating the supply of secondary combustion air via the feed opening 32, while a regulating valve 40 for primary combustion air 19 communicates with a rather short air duct that opens up at the back side of the ash compartment 18, i.e. providing for regulation of the supply of primary combustion air to the combustion chamber 6 up through the grate bottom 12.
  • a third regulating valve 42 communicates with a relatively long air duct running along the whole back side of the stove, and which at the top extends forward along the top side of the stove 2 to a horizontal slotted feed opening 44 along the top side of the door 14, through which tertiary combustion air 45 is supplied in such a way that the tertiary combustion air is used both as scavenging air for keeping clean the glass pane 16 and for being mixed with the flue gas at the top of the combustion air 6 with the intention of ensuring optimal combustion of all combustible gases before they reach the flue gas exhaust 26 via the reversing plate 24.
  • Supply of primary, secondary and tertiary combustion air 19, 33, 45 thus occurs via a common opening 46 at the back side of the woodburning stove at the bottom of the casing 4, from where all combustion air is introduced via a further common opening 48 at the bottom of the cabinet 36, after which supply of primary, secondary and tertiary combustion air 19, 33, 45 to respective air ducts takes place by means of the regulating valves 34, 40, 42 which via the electronic control 38 are controlled by each their electric motor, e.g. a step motor, 50, 52, 54.
  • supply of primary, secondary and tertiary combustion air 19, 33, 45 from respective regulating valves 34, 40, 42 alternatively may occur by means of flexible hoses of non-combustible material, the hoses being run from respective regulating valves 34, 40, 42 within the external casing 4 to respective feed openings for the combustion chamber 6.
  • the electronic control 38 includes a thermal sensor 47 and a ⁇ -probe 49 , both disposed in the flue gas exhaust 26 and connected with the electronic control 38.
  • the regulating valve 40 When firing a new portion of fuel, the regulating valve 40 is opened such that primary air 19 is supplied via the ash compartment 18 up through the grate bottom 16, while the secondary regulating valve 34 is closed.
  • the primary regulating valve 40 When reaching a temperature of the magnitude 1000° - 1200° and generation of a large amount of gas has occurred after some time, the primary regulating valve 40 is partially closed, while the secondary regulating valve 34 is partly opened and the tertiary regulating valve 42 is partly opened, controlled by the flue gas temperature (200°-350°) and the oxygen content in the flue gas which is detected by the ⁇ -probe 49.
  • the woodburning stove 2 according to the invention will preferably be designed with a firing indicator, which may consist of a light diode and/or an acoustic signal emitter which by signalling will remind about the fact that wood has to be fired now in order to maintain optimal combustion.
  • a firing indicator which may consist of a light diode and/or an acoustic signal emitter which by signalling will remind about the fact that wood has to be fired now in order to maintain optimal combustion.
  • the ⁇ -probe 49 continuously detects the oxygen content in the flue gas, why the automatic control can react rapidly if the oxygen content suddenly drops - e.g. in that the fuel blazes up - an optimal reaction by high temperature in the fire core (1200°) will be to open more for the regulating valve 34 secondary combustion air 33, while a corresponding reaction at lower temperature in the fire core will be to increase the supply of primary combustion air 19 via the regulating valve 40.
  • FIG. 4 illustrates the flue gas temperature viewed over five firings, each constituted by test firing with wood, each two kg.
  • FIG. 5 illustrates the amount of CO (the area under the curve) as CO also includes non-detectable particles.
  • the area under the curve in Fig. 5 represents, as mentioned, the actual amount of CO during the combusting; if the oxygen content detected by the ⁇ -probe 49 is incorporated in the curve, cf. Fig. 5 , the area under the curve will be reduced in general, i.e. the curve will approximately be displaced "in parallel" downwards.
  • Figs. 6-8 illustrate the valve opening in % for primary, secondary and tertiary combustion air, respectively.
  • Figs. 9-12 show a preferred embodiment of a valve cabinet 36 which is located under the ash compartment 18 ( Fig. 1 ), and which includes three regulating valves 34, 40, 42, where the regulating valve 40 regulates supply of primary combustion air 19, the regulating valve 34 regulates supply of secondary combustion air 33 and the regulating valve 42 regulates supply of tertiary combustion air 45 to respective feed openings 12, 32, 44 for the combustion chamber 6.
  • a front side 56 of the valve cabinet 36 is designed with a large number of supply openings 58 through which combustion air is generally introduced in the valve cabinet 36 which is usually provided with a not shown lower bottom plate.
  • the cavity 60 immediately within the supply openings 58 represents a relatively cold spot in the woodburning stove 2, why the electronic control 38 is located here, possibly fastened to the not shown bottom plate.
  • Fig. 13 shows a laboratory version of the regulating valves 34, 40, 42 with associated step motors 50, 52, 54 for primary, secondary and tertiary combustion air 19, 33, 45, respectively, which is supplied to the stove via flex hoses 62, 64, 66 with metal jacket.
  • the electronic control 38 enables achieving a rapid reaction by controlling the regulating valves 34, 40, 42 and good efficiency of the woodburning stove 2.
  • the woodburning stove 2 may include a number of signal diodes and/or a display showing the status of the most important control parameters, and which may be wall-mounted and interact wirelessly with the electronic control 38.
  • the electronic control 38 is battery-powered such that operation of the stove 2 is independent of the public network.
  • the battery may possibly be adapted to be recharged via a thermocouple connected to the stove.

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

Claims (5)

  1. Procédé de commande d'un poêle à bois (2) du type possédant une chambre de combustion (6) avec une porte en verre (14), la chambre de combustion (6) possédant une paroi (5, 8, 21, 22, 30) au niveau de l'arrière et à la fois sur le côté et vers le bas étant séparée d'une chambre à cendres (20) au moyen d'une grille inférieure (12), et reliée à une cheminée (28) par l'intermédiaire d'un échappement de gaz de combustion (26) dans lequel la température de gaz de combustion est détectée au moyen d'un capteur thermique (47), par cette méthode de l'air de combustion primaire (19) est fourni à la chambre de combustion (6) par l'intermédiaire de la chambre à cendres (20) jusqu'à la grille inférieure (12), et de l'air de combustion secondaire (33) est fourni directement à la chambre de combustion (6), par cette méthode on applique une commande électronique (38) qui est reliée au capteur thermique (47) et à une sonde λ (49) fournie dans l'échappement de gaz de combustion (26), et de l'air de combustion tertiaire (45) est fourni directement à la chambre de combustion (6) par l'intermédiaire d'une ouverture d'alimentation (44) le long d'un côté supérieur de la porte (14), et la fourniture d'air de combustion primaire, secondaire et tertiaire (19, 33, 45) à la chambre de combustion (6) est commandé par la commande électronique (38) au moyen de soupapes de commande séparées (34, 40, 42), dans lequel le procédé comprend les étapes consistant à :
    - lors de l'allumage d'une nouvelle portion de combustible, une soupape primaire (40) s'ouvre de sorte que de l'air de combustion primaire (19) est fourni par l'intermédiaire de la chambre à cendres (20) jusqu'à la grille inférieure (12), tandis qu'une soupape secondaire (34) se ferme,
    - lorsqu'une température dans le coeur de feu de la magnitude comprise entre 1000° et 1200° C est atteinte après un certain temps, la soupape primaire (40) est partiellement fermée, tandis que la soupape secondaire (34) est partiellement ouverte et une soupape tertiaire (42) est partiellement ouverte, commandées par une température de gaz de combustion comprise entre 200° et 350° C et par la teneur en oxygène dans le gaz de combustion qui est détectée par la sonde λ (49).
  2. Poêle à bois (2) comprenant une chambre de combustion (6) qui est séparée d'une chambre à cendres (20) au moyen d'une grille inférieure (12) et possédant une paroi (5, 8, 21, 22, 30) au niveau de l'arrière et des deux côtés dont le côté ascendant possède une partie de paroi inclinée s'étendant vers l'avant et vers le haut (8), la chambre de combustion (6) s'étend vers le haut de préférence par l'intermédiaire d'une plaque d'inversion (24) étant reliée à une cheminée (28) par l'intermédiaire d'un échappement de gaz de combustion (26), le poêle à bois (2) comprenant une commande électronique (38) qui est reliée à un capteur thermique (47) et à une sonde λ (49) fournie dans l'échappement de gaz de combustion (26), dans lequel la commande (38) est incorporée dans un placard (36) qui est conçu pour être déposé en dessous de la chambre à cendres (20) et qui inclut une entrée d'air commune et au moins une soupape de régulation (34, 40, 42) munie d'un registre de réglage, chacun étant relié en entraînement à un moteur électrique (50, 52, 54) agencé dans le placard (36), le moteur (50, 52, 54) étant relié en commande avec la commande électronique (38), les soupapes d'air (34, 40, 42) interagissant avec des conduits d'air pour fournir de l'air de combustion primaire, secondaire et tertiaire (19, 33, 45), les conduits d'air étant disposés côte à côte au niveau d'un côté arrière du poêle à bois (2), et dans lequel la commande (38) est configurée pour commander les soupapes de régulation (34, 40, 42) d'une manière telle que :
    - lors de l'allumage d'une nouvelle portion de combustible, une soupape primaire (40) s'ouvre de sorte que de l'air de combustion primaire (19) est fourni par l'intermédiaire de la chambre à cendres (20) jusqu'à la grille inférieure (12), tandis qu'une soupape secondaire (34) se ferme,
    - lorsqu'une température dans le coeur de feu de la magnitude comprise entre 1000° et 1200° est atteinte après un certain temps, la soupape primaire (40) est partiellement fermée, tandis que la soupape secondaire (34) est partiellement ouverte et une soupape tertiaire (42) est partiellement ouverte, commandées par une température de gaz de combustion comprise entre 200° et 350° C et par la teneur en oxygène dans le gaz de combustion qui est détectée par la sonde λ (49).
  3. Poêle à bois selon la revendication 2, dans lequel le placard comprend trois soupapes d'air, à savoir une première soupape d'air interagissant avec un premier conduit d'air pour la fourniture d'air de combustion primaire, une seconde soupape d'air interagissant avec un second conduit d'air pour la fourniture d'air de combustion secondaire, et une troisième soupape d'air interagissant avec un troisième conduit d'air pour la fourniture d'air de combustion tertiaire.
  4. Poêle à bois selon la revendication 2 ou la revendication 3, dans lequel le premier conduit d'air s'ouvre dans la chambre à cendres au-dessus d'une possible poêle à cendres, pendant que de l'air de combustion primaire est fourni à la chambre de combustion à travers la grille inférieure, et que le second conduit d'air s'ouvre du côté arrière de la chambre de combustion éloignée de la grille inférieure, pendant que de l'air de combustion secondaire est fourni à travers une ouverture horizontale à fentes au niveau de la transition vers la partie de paroi inclinée de la chambre de combustion.
  5. Poêle à bois selon la revendication 2 ou la revendication 3, dans lequel le troisième conduit d'air s'ouvre dans une ouverture horizontale à fentes le long du côté supérieur d'une porte en verre au niveau du côté frontal de la chambre de combustion, pendant que de l'air de combustion tertiaire, bien qu'étant mélangé avec des gaz de remontée, est également utilisé en tant qu'air de balayage pour garder le côté interne de la porte en verre propre.
EP09151419.0A 2008-01-30 2009-01-27 Poêle à bois commandé électroniquement et méthode de contrôle Active EP2085694B1 (fr)

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EP4215820A1 (fr) * 2022-01-20 2023-07-26 Jide Dispositif de chauffage avec alimentation en air secondaire

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CN103486570A (zh) * 2012-06-12 2014-01-01 中山市兴和生物能源科技有限公司 一种生物质燃烧机
CN103512025A (zh) * 2012-06-21 2014-01-15 中山市兴和生物能源科技有限公司 一种半气化生物质燃烧机
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FI127234B (fi) * 2012-10-09 2018-02-15 Jouko Kettunen Menetelmä ja laite kiinteiden polttoaineiden tulisijassa polttamisen tehostamiseksi
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FR3050012B1 (fr) * 2016-04-06 2018-04-13 Speeta Poele a bois avec six etats de controle de combustion
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BE1030215B1 (fr) * 2022-01-20 2023-08-28 Jide Dispositif de chauffage avec alimentation en air secondaire

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EP2085694A2 (fr) 2009-08-05
DK2085694T3 (en) 2018-09-03

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