EP3019792B1 - Four à combustion pourvu d'un appareil de levage destiné à acheminer le combustible - Google Patents

Four à combustion pourvu d'un appareil de levage destiné à acheminer le combustible Download PDF

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Publication number
EP3019792B1
EP3019792B1 EP14745062.1A EP14745062A EP3019792B1 EP 3019792 B1 EP3019792 B1 EP 3019792B1 EP 14745062 A EP14745062 A EP 14745062A EP 3019792 B1 EP3019792 B1 EP 3019792B1
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EP
European Patent Office
Prior art keywords
fuel
grate
combustion
shaft
combustion furnace
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EP14745062.1A
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German (de)
English (en)
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EP3019792A1 (fr
Inventor
Josef LUMPER
Jens-Michael KIRCHHOF
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Bioenergy 2020+ GmbH
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Bioenergy 2020+ GmbH
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Publication of EP3019792A1 publication Critical patent/EP3019792A1/fr
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    • 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
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H17/00—Details of grates
    • F23H17/06—Provision for vertical adjustment of grate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B30/00—Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber
    • F23B30/02—Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber with movable, e.g. vibratable, fuel-supporting surfaces; with fuel-supporting surfaces that have movable parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B40/00—Combustion apparatus with driven means for feeding fuel into the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/10—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of field or garden waste or biomasses
    • F23G7/105—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of field or garden waste or biomasses of wood waste
    • 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
    • F23N1/00—Regulating fuel supply
    • F23N1/007—Regulating fuel supply using mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/04—Regulating air supply or draught by operation of single valves or dampers by temperature sensitive elements
    • 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
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/191—Component parts; Accessories
    • F24B1/193—Grates; Irons

Definitions

  • the invention relates to a combustion furnace for solid fuel, in particular a wood-burning stove, with a combustion chamber, which is associated with a storage space for supplying and refueling, wherein the combustion furnace has a height-adjustable grate in a substantially non-ventilated shaft, wherein below the combustion chamber Unvented shaft as a storage space for the fuel and in which the grate is provided as a platform for the fuel supply for supplying and refueling of fuel from the storage room into the firebox.
  • the US 20060096585 A also relates to a grill with a stationary arranged charcoal bowl.
  • a kinematic scissors and with an electromotive spindle drive the grill grate is changed in the distance to the charcoal grill.
  • Temperature sensors measure the effective grill temperature and raise or lower the grill to keep a desired grill temperature constant.
  • From the GB 972341 A is a coal furnace with arranged above the firebox storage space for coal known.
  • the grate which limits the firebox down, can be lowered to accommodate the ash or slag and eventually tilted for emptying. About the height adjustment, the power can also be controlled.
  • the furnace is thus fed from above with fresh coal in the manner of a continuous fire, with heat exchangers for hot water preparation (central heating) being provided in the parting plane between the storage space and the combustion chamber.
  • the CH 281678 A relates to a furnace with adjustable grate, with the aim of adjusting the heat output by raising or lowering the fire and the embers in the fire shaft to the needs.
  • a storage room for fuel is not provided.
  • This also applies to the oven after the CN 2086372 U , It is a cooker with an attachable saucepan and a lowered against the force of a spring rust.
  • the coal ignited on the grate becomes ash and slag after ignition and thus lighter.
  • the decreasing heat output that goes hand in hand with this is compensated by raising the remaining embers, so that the heat output of the amount of coal used (in this case 0.5 kg) can be kept approximately the same until extinguished.
  • a lever system for adjusting the grate can also be used. This makes it possible to keep the heat output constant by lifting, but also by lowering to reduce, for example, to prevent overcooking during the cooking process.
  • the FR 445970 A relates to an oven that can be used both as a stove, as well as a hotplate.
  • the hearth which consists of a fire bowl with a ground formed as a grate, in the interior of the furnace in height adjustable. If the fire bowl is inside one cylindrical shell of heat-storing material at the bottom, then it is heated in the first place. When cranking up the firebox in the internal thread of the furnace liner, place the firebox immediately under the furnace plate, which forms the cooking plate for heating pans or pots. The entire cylindrical interior of the furnace is ventilated from below. A refueling into the fire bowl takes place from above after removing the hotplate.
  • the DE 3538511 A1 relates to underfeed firing with a horizontal auger which forces the fuel from a separate silo through a vertical fuel supply duct into a fire pit.
  • the bottom of the fire bowl is formed by a perforated annular disc which surrounds the fuel feed channel like a collar.
  • the fuel supply passage is telescopically inserted and deployed, thus positioning the washer within the fire pit.
  • 2,624,329 relates to a combi stove with a hotplate, a grate that carries the entire fuel charge and can be adjusted by a lifting spindle or scissors (possibly with electric drive) for temperature adjustment up and down at a distance from the hotplate.
  • a cage of vertical bars surrounds the grate and serves for air circulation, as well as the anti-rotation of the grate in vertical positioning.
  • the outgoing heat can be used for heating domestic hot water or for space heating.
  • the invention aims to keep a log fire, without refueling by hand, to keep going for several hours.
  • a combustion furnace according to the invention of the type described above, characterized in that in the region of the confluence of the non-ventilated shaft in the combustion chamber surrounding a junction nozzle ring is provided for air supply into an annular space of a first combustion zone.
  • the provided for refueling fuel such as logs, are thus placed on the platform located in the uppermost position prior to commissioning of the stove, this gradually lowered while stacking more logs until the platform in the unventilated shaft drove all the way down and the shaft is completely filled.
  • the logs lying in the focal plane with the lateral air supply are ignited.
  • a further nozzle ring is provided for air supply at a distance above the first nozzle ring which ignites flammable gases from the first combustion zone in a second combustion zone in the combustion chamber, wherein the second nozzle ring is in an annular space with preferably smaller diameter than that the annular space of the first nozzle ring and the annular space forms the mouthpiece of a burner.
  • the firebox with an openable window is located above the or the nozzle rings for the supply of combustion air.
  • the elevator via a crank, a cable or by means of a lever can be activated. If one recognizes that it would be useful as a result of the progressive burn-up in the focal plane and a decreasing flame height in the firebox to refill wood, then the elevator is operated by hand.
  • the platform carrying the logs is e.g. lifted slightly by means of the crank and a spindle drive, a gear rack or a kinematic scissors so that new logs get into the focal plane with the lateral air supply nozzles.
  • a stove of the usual size for a living room can be maintained in this way a fire for six hours or more.
  • Such a stove can be equipped with a water jacket and form the heat source for central heating.
  • An automatic heating results from the fact that the elevator has a motor drive, which is controllable in dependence on the combustion, for example by the exhaust gas temperature as a reference variable in terms of refilling, in particular the lifting speed of the fuel. If the exhaust gas temperature drops below an adjustable limit value, then the electromotive drive for the elevator, for example, is briefly switched on, so that new fuel is lifted into the focal plane. Thereby, a continuous burning process can be maintained.
  • a arranged approximately in a living room stove with visible flame, which works as a burner for central heating, can be operated even in the absence of many hours.
  • the elevator has a spring store with a spiral spring, which can be tensioned and / or recharged by means of a crank or the like while the grate is lowered, and that one Gear with a Hubspindel- or rack and pinion for the rust a regulator for the hub eg a wind vane controller as an aerodynamic escapement or one with a controlled by the exhaust gas temperature brake, for example, eddy current brake with variable braking power is switched on.
  • the coil spring is tensioned at the same time.
  • the torque of the coil spring is released slowly via a gear with activated escapement or brake similar to a clockwork.
  • the braking power can be changed as needed by means of the controller.
  • the necessary lifting force can be applied for a continuous stroke of eg 50 cm over 6 hours.
  • a temperature sensor of the exhaust gas temperature via an actuator, a cam or a cam slide shifts or linearly displaced having at least one, preferably a plurality of cams, which lever act as a sensor, wherein a lever carries permanent magnets , the temperature-dependent more or less pivotable or slidable over a disc of the eddy current brake, wherein a second lever is kinematically connected to a flue damper for temperature-dependent opening or closing and a third lever flaps such as primary air flaps and secondary air flaps of the lateral air supply into the focal plane or the Firebox controls with regard to the opening angle.
  • the stroke speed ie the refueling of fuel
  • the fresh air volumes in the focal plane and the deduction cross section can be adjusted so that a burn is achieved permanently and with particularly good efficiency.
  • At least one mechanical stop is provided directly above the focal plane, which limits the stroke of the elevator when it contacts the ignited fuel and its position the level of air supply is preset.
  • the fuel abuts the stop and prevents unnecessary further rotation of the crank or lifting the grate and limits the amount of fuel supplied to the required level.
  • a motor drive ends the hub in any case, if the fuel, so here for example logs, pending the stop. Only when a certain layer has burned off, a hub can be made again.
  • the pan unlocks when the door is open.
  • the incinerator is particularly suitable for all wood fuels, such as wood briquettes.
  • wood fuels such as wood briquettes.
  • the storage space is formed as a circular cylindrical, tubular shaft for receiving preferably circular cylindrical wood briquettes.
  • the then plate-shaped grate which actually represents the platform for the still unused fuel supply to be supplied, is increased inside the tube depending on the combustion or constant or simply by manual operation in the tube, which is substantially unaerated.
  • This burner is similar to a candle in a candlestick, which is raised with increasing burn, so that the flame is always burning at the same height substantially.
  • the grid as a platform for supporting and Nachschieben the fuel supply rotatable about a vertical axis in the shaft is arranged and over one Rotary drive in addition to the elevator has.
  • the ash can then easily trickle down in the gap between the lateral surface of the wood briquettes and the inner pipe wall and is caught there in an ash tray.
  • the rotation of the fuel supply also counteracts jamming in the stroke movement in the interior of the tube. As a result of the uniform burning on the surface, the efficiency increases. The heat is released evenly throughout the firebox.
  • a stove after the Fig. 1 and 2 comprises a combustion chamber 1, which merges upwards into a flue 2 for the flue gases and has a grate 3 at the bottom.
  • the grate 3 is arranged vertically adjustable within a shaft 4 by means of racks.
  • a coil spring 7 is stretched while lowering the grate 3 for the purpose of filling or loading with wood.
  • the coil spring 7 is part of a mechanical lifting gear and outputs the stored torque via a gear 8 and a brake disc 9, acting on the permanent magnets 10 braking, to the pinion of the racks 5 from.
  • the brake here "eddy current brake” can be set by hand so that the torque is released very slowly (clockwise) eg within 6 hours.
  • the hoist has a temperature-dependent control in the embodiment.
  • a temperature sensor 12 is provided in the fume hood 2 and measures the flue gas temperature in the flue 2.
  • an actuator 13 Via a capillary, into which even more temperature values can be fed, an actuator 13 is operated with a piston and a piston rod which acts eccentrically on a cam 14 and this possibly twisted over a further leverage.
  • the base of the actuator 13 is adjustable in height, whereby the parameters described below (braking power, combustion air, flue gas flap position) are jointly adjustable in the sense of a throttled or high-fire fire.
  • a two-armed lever 15 scans one of the curves 16 and pushes the permanent magnets 10 more and more on the brake disk 9 when the exhaust gas temperature measured by the temperature sensor 12 increases.
  • a stop 23 is provided above the focal plane. Logs can be lifted on this stop 23 neither in cranking operation, nor in a motor-driven elevator. For example, the crank 6 can only be turned on again (for adding wood) if a corresponding height of the fuel material in the combustion chamber has burned down.
  • the stop 23 can be swung to the side. Thus, the free access to place the logs on the grate 3 is given.
  • a kinematic connection between the stopper 23 and the oven door causes the stopper 23 to pivot sideways as soon as the oven door opens.
  • an oven constructed for circular-cylindrical wood briquettes 25, 25 ' has a tubular circular-cylindrical shaft 26 in which the wood briquettes 25, 25' rest on a platform as a fuel supply.
  • These circular bricks carrying the wood briquettes 25, 25 ' are formed with axial openings as a grate 27, which can be lowered manually or automatically in the shaft 26 opening from below into the combustion chamber 28 for feeding fuel and can be lowered for loading.
  • a first nozzle ring 29 is provided for the supply of combustion air, in the plane of which the end face of the uppermost wood briquette 25 is located.
  • a second nozzle rim 31 for fresh air supply is provided in a arranged above, removable for loading with wood briquettes bottom plate and brings oxygen into a second combustion zone.
  • the second nozzle ring 31 is located in the lateral surface of a second annular space 32, whose diameter in the embodiment is smaller than the diameter of the wood briquettes 25, 25 '. If the diameter is greater than the diameter of the wood briquettes 25, 25 ', then the removable base plate can remain in the combustion chamber 28 even during loading. In the second combustion zone, the still unburned gases from the first combustion zone are ignited. This results in a flame in the combustion chamber 28 above the second annulus 32, which effectively forms the mouthpiece of a burner.
  • the fresh air or combustion air supply can be forcibly controlled via a controllable fan or via valves, for example via the exhaust air temperature as a reference variable.
  • the automatic Nachschieben the fuel supply can be controlled by the exhaust air temperature to ensure a constant flame in the combustion chamber 28 at complete combustion largely exhaust-free.
  • Fig. 3 shows further that the grate 27 here on a carriage 33 in the shaft 26 adjustable in height (rollers 34) and in addition to the vertical central axis rotatable (roller 35) is arranged. While the hub causes fuel replenishment, rotation of the fuel supply in the well 26 results in uniform burnup and facilitates the removal of ash from the burn zone down into an ash chamber 36.
  • the annular gap 37 eg, 6 mm
  • the grate 27 has edge recesses 38, which allow falling through of ash.
  • the annular gap would have to be at least 12 mm.
  • a fully automatic control of the incinerator is additionally shown.
  • a temperature sensor 39 is provided above the combustion chamber 28 .
  • This is connected to a control unit 40 for guiding the same, on the one hand, the combustion air via flaps (primary air flaps, secondary air flaps) and or or metered by a blower 41 and on the other hand, the hub and the rotation of the grate 27 and thus the fuel supply (here the wood briquettes 25, 25 ') activated.
  • lifting and rotary drives are electric motors, eg servo motors with gears and mechanical arrangements (see Fig. 4 ) in question.
  • crank-operated rotary mechanisms for the grate 27 for common or separate activation of the two functions (lifting, turning) possible.
  • FIG. 4 An example of an electromechanical lifting and turning device is in Fig. 4 shown, the furnace according to Fig. 3 in cross section according to the line IV-IV shows.
  • the grate 27 is rotatably mounted on a bracket 42 which is vertically movable on a spindle 43.
  • the spindle 43 is driven by a servo motor 44 which is controlled by the controller 40 (FIG. Fig. 3 ) is switched on when falling below an exhaust or exhaust air temperature threshold for a number of revolutions of the spindle 43.
  • the controller 40 FIG. Fig. 3
  • 25 'from the top of the grate 27 is moved all the way down in the shaft 26.
  • a shaft 45 Parallel to the spindle 43, a shaft 45 is mounted, which has an axial groove 46 over the entire length (see cross-sectional view). In the groove 46 engages a driver of a pinion 47, which is penetrated by the shaft 45 as a rotation axis and along the shaft 45 slides freely in the axial direction.
  • This pinion 47 is rotatably mounted in the bracket 42 and transmits, for example by means of a toothed belt or a chain 48, the rotation of the shaft 45 on a sprocket 49.
  • the latter is rotatably mounted on the grate 27. Thereby, a rotation of the shaft 45 is transmitted to the grate 27.
  • the shaft 45 is over a servomotor 50 driven permanently or intermittently, wherein the controller 40 ( Fig. 3 ) issued the power on and off commands to the servo motor 50.
  • the console 42 passes through the lateral surface of the shaft 26 in a vertical slot, which is covered by telescopic plates ride along with the console 42 and or or the spindle 43 and the shaft 45 are located in a housing or a casing, which is closed to the outside so that no combustion air penetrates, so that the combustion is limited to the aforementioned combustion zones.

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Solid-Fuel Combustion (AREA)

Claims (8)

  1. Four de combustion pour combustibles solides, notamment poêle à bois, comportant une chambre de combustion (1,28) et une grille (3,27) qui est guidée de manière à être réglable en hauteur et qui est reliée à un dispositif de levage, un puits (4, 26) sans apport d'air étant aménagé en-dessous de la chambre de combustion (1, 28) pour servir de réservoir de combustible et pour accueillir la grille (3,27) afin que celle-ci constitue un support horizontal pour la réserve de combustible permettant ainsi le transfert et réapprovisionnement du combustible depuis le réservoir vers la chambre de combustion (1, 28), et le dispositif de levage étant entraîné par un moteur dont la vitesse de levage peut être commandée en fonction de la combustion, en se basant préférentiellement sur la température des gaz de combustion comme variable de référence, caractérisé en ce que, dans la partie où le puits (4, 26) sans apport d'air débouche dans la chambre de combustion (1, 28), une couronne d'injecteurs (29) entoure l'embouchure afin d'apporter de l'air dans une chambre annulaire (30) d'une première zone de combustion.
  2. Four de combustion selon la revendication 1, caractérisé en ce que le dispositif de levage est équipé d'un système de stockage à ressort qui comporte un ressort hélicoïdal (7) et qui peut être tendu et/ou rechargé au moyen d'une manivelle (6) ou d'un câble tout en abaissant la grille (3), et qu'un mécanisme (8) d'entraînement de la grille (3), lequel comporte un entraînement par vis de levage ou un entraînement par crémaillère (5), est associé à un dispositif de réglage de la levée, s'agissant préférentiellement d'un dispositif de réglage à roue à ailettes servant de ralentisseur aérodynamique et/ou d'un frein commandé en fonction de la température des gaz de combustion, par exemple d'un frein à courants de Foucault ayant une puissance de freinage variable.
  3. Four de combustion selon la revendication 2, caractérisé en ce qu'un capteur de température (12) relève la température des gaz de combustion pour déplacer par rotation ou translation, par l'intermédiaire d'un organe de réglage (13), un disque-came (14) ou un tiroir à came en fonction de la température, ces derniers présentant au moins une, de préférence plusieurs cames de commande (16, 18, 21) sur lesquelles viennent en appui des leviers (15, 17, 20) servant de capteurs, l'un des leviers (15) étant pourvu d'aimants permanents (10) pouvant être déplacés par rotation ou translation, en fonction de la température, dans un degré variable à travers un disque (9) d'un frein à courants de Foucault, un deuxième levier (17) étant cinématiquement relié à un clapet de fumées (19) pour l'ouvrir ou fermer en fonction de la température, et un troisième levier (20) permettant de commander l'angle d'ouverture de vannes (22), s'agissant par exemple de vannes d'air primaire et d'air secondaire assurant un apport latéral d'air dans l'étage de combustion.
  4. Four de combustion selon l'une des revendications 1 à 3, caractérisé en ce qu'au moins une butée mécanique (23) est disposée directement au-dessus de la zone de combustion pour ainsi limiter la levée du dispositif de levage lorsqu'elle touche le combustible enflammé, sa position au-dessus du niveau de l'apport d'air étant réglable.
  5. Four de combustion selon la revendication 4, caractérisé en ce que la butée (23) peut être sortie de la zone de combustion par pivotement afin de pouvoir remplir le réservoir, le pivotement étant préférentiellement rendu possible par un verrouillage de pivotement intégré à la trappe d'accès au poêle lorsque cette dernière est ouverte.
  6. Four de combustion selon l'une des revendications 1 à 5, caractérisé en ce qu'il est pourvu, à un certain écart au-dessus de la première couronne d'injecteurs, d'une autre couronne d'injecteurs permettant d'apporter de l'air et ainsi enflammer, dans une deuxième zone de combustion au sein de la chambre de combustion, des gaz combustibles en provenance de la première zone de combustion, la deuxième couronne d'injecteurs étant située dans une chambre annulaire (32) dont le diamètre est préférentiellement plus petit que celui de la chambre annulaire (30) de la première couronne d'injecteurs (29), et la chambre annulaire (32) formant la partie d'embouchure d'un brûleur.
  7. Four de combustion selon l'une des revendications 1 à 6, caractérisé en ce que le réservoir est réalisé sous forme d'un puits (26) tubulaire qui rappelle un cylindre de révolution et qui est destiné à accueillir des briquettes de bois (25, 25') rappelant de préférence un cylindre de révolution.
  8. Four de combustion selon la revendication 7, caractérisé en ce que la grille (27), servant de support horizontal pour soutenir et pousser progressivement la réserve de combustible, est montée rotative autour d'un axe vertical au sein du puits (26) et dispose, outre le dispositif de levage, d'un entraînement en rotation.
EP14745062.1A 2013-07-10 2014-06-30 Four à combustion pourvu d'un appareil de levage destiné à acheminer le combustible Active EP3019792B1 (fr)

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AT504482013 2013-07-10
ATA50445/2014A AT514525B1 (de) 2013-07-10 2014-06-26 Verbrennungsofen
PCT/AT2014/050149 WO2015003197A1 (fr) 2013-07-10 2014-06-30 Four à combustion pourvu d'un appareil de levage destiné à acheminer le combustible

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EP3019792A1 EP3019792A1 (fr) 2016-05-18
EP3019792B1 true EP3019792B1 (fr) 2018-06-06

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AT514525A1 (de) 2015-01-15
AT514525B1 (de) 2015-05-15
WO2015003197A1 (fr) 2015-01-15
EP3019792A1 (fr) 2016-05-18

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