EP1788307B1 - Vorrichtung zum Zuführen und Verteilen von Brennstoff in einen Brenner, insbesondere in einem mit Pellets betriebenen Brenner oder Ofen - Google Patents

Vorrichtung zum Zuführen und Verteilen von Brennstoff in einen Brenner, insbesondere in einem mit Pellets betriebenen Brenner oder Ofen Download PDF

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Publication number
EP1788307B1
EP1788307B1 EP06123782A EP06123782A EP1788307B1 EP 1788307 B1 EP1788307 B1 EP 1788307B1 EP 06123782 A EP06123782 A EP 06123782A EP 06123782 A EP06123782 A EP 06123782A EP 1788307 B1 EP1788307 B1 EP 1788307B1
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EP
European Patent Office
Prior art keywords
approximately
tubular element
tube
chute
plate
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
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EP06123782A
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English (en)
French (fr)
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EP1788307A1 (de
Inventor
Mario Acquaro
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FAMAR ITL (Innovation Technology Lab) Srl
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FAMAR ITL (Innovation Technology Lab) Srl
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F23K3/16—Over-feed arrangements

Definitions

  • the present invention relates to a device for introducing and distributing fuel in a burner, particularly for a pellet-fired boiler or stove.
  • Boilers and stoves are currently in use which use as fuel small elements obtained by compressing sawdust or wood chips, also known as pellets.
  • These stoves and burners usually comprise a hopper, in which the pellets are stored and periodically introduced automatically in a burner, where they are burned; below the burner there is a removable tray for collecting the ash produced by combustion.
  • pellets are removed from the hopper and introduced in the burner typically by means of a screw feeder, which is actuated by an electric motor and whose delivery leads into the combustion chamber.
  • pellets thus exit from the screw feeder and fall into the burner, where they burn.
  • pellet boilers and stoves are known in the burner of which there is a spatula which automatically moves the pellets that have fallen into the burner alternately into two preset positions, respectively to the right and to the left of the delivery of the screw feeder.
  • spatula conveys the fresh pellets that fall into the burner so that they alternately cover the ignited pellets that are present respectively to the right and to the left of the delivery of the screw feeder; accordingly, two piles of unburned pellets form at the two combustion focuses and can choke the combustion and even stop it.
  • the movement of the spatula can cause unburned pellets to fall into the ash collection tray, consequently wasting said pellets.
  • US-5 243 963 discloses a furnace for solid fuels, as defined in the preamble of claim 1.
  • WO 01/29481 discloses a stove and a feeding device for a burner.
  • the aim of the present invention is to solve the above mentioned problems, eliminating the drawbacks of the cited background art, by providing a device which allows to introduce automatically the fuel in a burner, particularly of a pellet boiler or stove, so as to maintain high combustion efficiency.
  • an object of the invention is to provide a device that allows to feed the fuel to the burner without the risk of interrupting combustion.
  • Another object of the invention is to allow to obtain a flame which is as uniform as possible, so as to make the temperature in the burner uniform by making the combustion uniform.
  • Another object of the invention is to minimize the waste of pellets.
  • Another object is to provide a device which is structurally simple and has low manufacturing costs.
  • a device for introducing and distributing fuel in a burner particularly for a pellet stove or boiler, as defined in claim 1.
  • the reference numeral 1 designates a device for introducing and distributing fuel in a burner, particularly for a pellet stove or boiler, not shown in the accompanying figures.
  • the device 1 comprises at least one screw feeder 2, constituted by a substantially cylindrical tubular element 3, which is contained partially within a box-like body 5 which has a transverse cross-section shaped approximately like an inverted letter ⁇ and affects longitudinally the entre tubular element 3.
  • the box-like body 5 forms a bottom 6, which is substantially flat and approximately parallel to the longitudinal axis of the tubular element 3 and is advantageously approximately rectangular in plan view; two arms, respectively designated by the reference numerals 7a and 7b, protrude approximately at right angles from the longitudinal perimetric edges of said bottom and partially enclose laterally the tubular element 3; two wings, respectively designated by the reference numerals 8a and 8b, protrude from the free ends of the arms 7a and 7b approximately at right angles, on the opposite side with respect to the tubular element 3.
  • a first opening 10 is provided proximate to the rear end 9 of the tubular element 3, on the lateral surface thereof, opposite the bottom 6 of the box-like body 5, advantageously has an approximately rectangular plan shape and is suitable to introduce into the screw feeder 2 the pellets contained in an overlying hopper, not shown in the accompanying figures.
  • Two second openings are provided proximate to the front end 11 of the tubular element 3, on its lateral surface and on the facing bottom 6 of the box-like body 5; said second openings are substantially mutually identical, face each other, and advantageously have an approximately circular plan shape; a tube 13 protrudes from the perimetric edge of the second opening provided in the tubular element 3 approximately at right angles and toward the outside of said element, so as to pass through the facing second opening provided in the bottom 6; the tube 13 constitutes the delivery of the screw feeder 2 and is advantageously shaped, in a cross-section taken along a plane which is perpendicular to the bottom 6 and passes through the longitudinal central plane thereof, approximately like a right trapezoid, in which the parallel sides are perpendicular to the bottom 6 and the oblique side is directed away from the rear end 9 of the tubular element 3.
  • two first tabs protrude from the longitudinal ends of the bottom 6 of the box-like body 5, proximate to the front end 11 of the tubular element 3 and laterally with respect to the tube 13, and lie approximately on the same plane as the bottom 6 and advantageously have an approximately rectangular plan shape.
  • a second tab 50 which advantageously has an approximately rectangular plan shape, protrudes from the bottom 6 of the box-like body 5, approximately at right angles and to the rear of the tube 13, and a third advantageously substantially circular opening, not shown in the accompanying figures, is provided approximately centrally in said second tab.
  • the tubular element 3 and the box-like body 5 are closed, respectively at the rear and front ends of the tubular element 3, by a first flange 15 and by a second flange 16, between which the shaft 17 of a worm screw 18 is supported rotatably; said worm screw is suitable to convey the pellets from the rear end 9 to the front end 11 of the tubular element 3, so as to make them exit by gravity from the tube 13 which constitutes the delivery of the screw feeder 2.
  • a first end 19 of the shaft 17 is supported rotatably in an appropriately provided through hole, not shown in the accompanying figures, which is provided approximately centrally with respect to the first flange 15, while the second end 20 of the shaft 17 is advantageously supported rotatably in an appropriately provided seat, which is approximately cylindrical and is formed by an annular protrusion 21, which protrudes approximately centrally from the second flange 16 toward the inside of the tubular element 3.
  • the first end 19 of the shaft 17 protrudes longitudinally outside the tubular element 3 and engages suitable motion-generation means, constituted for example by a gearmotor 22.
  • Means for the conveyance and uniform distribution of the pellets into the burner are associated with the delivery of the screw feeder 2 and comprise advantageously a first chute 23, which protrudes approximately at right angles from the bottom 6 of the box-like body 5 at the first tabs 14a and 14b to the rear of the tube 13.
  • the first chute 23 is advantageously constituted by a first plate 24, which is preferably approximately flat and substantially perpendicular to the bottom 6 and is connected to said bottom and to the first tabs 14a and 14b at a first transverse end, to the rear of the tube 13; advantageously, the first plate 24 is rigidly associated with the second tab 50, for example by bolting.
  • a fourth opening is provided in the first plate 24, in the region thereof which faces the tube 13 and at the third opening provided in the second tab 50.
  • Two first shoulders protrude from the longitudinal ends of the first plate 24 approximately at right angles thereof and in the opposite direction with respect to the rear end 9 of the tubular element 3 and enclose laterally the tube 13.
  • the first chute 23 is further connected to the tubular element 3 by means of an appropriately provided strut 26, which is fixed with one of its ends to the bottom 6 of the box-like body 5 and with its other end to the first plate 24.
  • Such means for conveying and uniformly distributing the pellets further comprise a second chute 27, which is associated rotatably, by means of its upper end, with the first chute 23 in the region thereof that is contiguous to the tube 13.
  • the second chute 27 is constituted by a second plate 28, which is preferably approximately flat and substantially parallel to the first plate 24 and advantageously has an approximately isosceles-trapezoid plan shape, in which the longer parallel side 29 is arranged between the tube 13 and the first plate 24.
  • Two second shoulders protrude from the longitudinal ends of the second plate 28, approximately at right angles and in the opposite direction with respect to the first plate 24; during use, the second shoulders are arranged laterally with respect to the tube 13 and inside the first shoulders 25a, 25b of the first chute 23.
  • the second plate 28 of the second chute 27 is keyed, proximate to its longer parallel side 29, to a secondary shaft 31, which is arranged so that its longitudinal axis is approximately perpendicular to the first plate 24 and rotatably associated with the fourth opening provided therein and with the third opening of the second tab 50 by way of suitable rotary support means of a known type, such as for example a first cylindrical guide 32, which is fixed to the second tab 50 on the opposite side with respect to the tube 13; the second chute 27 can thus be turned with respect to the first chute 23 about the longitudinal axis of the secondary shaft 31, by way of suitable motion-transmission means which are connected to the motion-generation means.
  • the motion-generation means comprise a first pulley 33, which is advantageously provided with teeth and is keyed to the portion of the first end 19 of the shaft 17 that protrudes from the tubular element 3 and is connected, by means of a belt 34, which is advantageously a toothed belt, to a second pulley 35, which is keyed to an underlying shaft 36, which is approximately parallel to the shaft 17 and is advantageously axially offset with respect to said shaft relative to a plane which is perpendicular to the first plate 24 of the first chute 23 and passes through the central longitudinal axis of said plate.
  • the shaft 36 is supported rotatably by a second cylindrical guide 37, which is in turn supported by an appropriately provided bracket 38 connected to the box-like body 5.
  • a cam 39 is keyed to the end of the shaft 36 that is directed toward the first chute 23, and one end of a linkage 40 is pivoted to the cam; such linkage 40 is pivoted, at the other end, to a crank 41, which is keyed to the secondary shaft 31.
  • the device 1 is associated for example with a pellet boiler or stove by arranging the rear end 9 of the tubular element 3 at the bottom of the pellet hopper, so that said pellets can enter the first opening 10 by gravity.
  • the front end 11 of the tubular element 3 is instead arranged within the burner, not shown in the accompanying figures, of the boiler or stove, directing the first chute 23 toward the underlying combustion chamber of said burner.
  • the device 1 is arranged so that the shaft 17 is inclined at approximately 45° with respect to the horizontal plane.
  • the rotation of the shaft 17 entails the rotation of the first pulley 33, which is keyed to it; the first pulley 33, by means of the toothed belt 34, turns the second pulley 35 and the shaft 36 to which said pulley is keyed.
  • the cam 39, the linkage 40 and the crank 41 are also turned, producing the oscillation of the secondary shaft 31 with respect to its longitudinal axis.
  • the oscillation of the second chute 27 prevents the pellets from falling in a single region of the burner and distributes them approximately uniformly therein.
  • the invention has achieved the intended aim and objects, a device having been devised for introducing fuel in a burner, particularly for a pellet stove or boiler, which allows to obtain a uniform distribution of the pellets in the burner, so as to achieve high efficiency in combustion.
  • the production costs of the device according to the invention remain low, since it is provided only by means of components which are easy to manufacture and/or assemble.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Solid-Fuel Combustion (AREA)
  • Screw Conveyors (AREA)

Claims (21)

  1. Vorrichtung zum Einleiten und Verteilen von Brennstoff in einem Brenner, insbesondere für einen Pellet-Ofen oder einen Kessel, die wenigstens einen Schraubenförderer (18) umfasst, dessen Ausgabe mit dem Brenner verbunden ist, wobei der Ausgabe des wenigstens einen Schraubenförderers Mittel für den Transport und die gleichmäßige Verteilung des Brennstoffs in dem Brenner zugeordnet sind und wobei ein Rohr (13) die Ausgabe des Schraubenförderers bildet, dadurch gekennzeichnet, dass die Mittel für den Transport und die gleichmäßige Verteilung des Brennstoffs in dem Brenner eine zweite Rutsche (27) umfassen, die mit ihrem oberen Ende einer ersten Rutsche (23) in einem an das Rohr angrenzenden Bereich drehbar zugeordnet ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der wenigstens eine Schraubenförderer durch ein im Wesentlichen zylindrisches rohrförmiges Element gebildet ist, das teilweise in einem kastenartigen Körper enthalten ist, der einen Querschnitt besitzt, der angenähert wie ein umgedrehter Buchstabe Ω geformt ist und auf das gesamte rohrförmige Element in Längsrichtung einwirkt, wobei der kastenartige Körper einen Boden bildet, der im Wesentlichen eben ist und zu der Längsachse des rohrförmigen Elements ungefähr parallel ist und in der Draufsicht eine ungefähr rechtwinklige Form hat, wobei zwei Arme ungefähr rechtwinklig von den longitudinalen Umfangskanten hiervon vorstehen, wobei die Arme das rohrförmige Element seitlich teilweise umschließen, wobei am gegenüberliegenden Ende in Bezug auf den Boden des kastenartigen Körpers in der Nähe des hinteren Endes des rohrförmigen Elements an seiner seitlichen Oberfläche eine erste Öffnung vorgesehen ist, die für die Einleitung der Pellets in den Schraubenförderer geeignet ist.
  3. Vorrichtung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass in der Nähe des vorderen Endes des rohrförmigen Elements auf seiner seitlichen Oberfläche und auf dem zugewandten Boden des kastenartigen Körpers zwei zweite Öffnungen vorgesehen sind, wobei diese Öffnungen im Wesentlichen miteinander identisch sind und einander zugewiesen sind, wobei ein Rohr, das die Ausgabe des Schraubenförderers bildet, von der Umfangskante der zweiten Öffnung, die in dem rohrförmigen Element vorgesehen ist, ungefähr rechtwinklig und in Richtung zu der Außenseite des rohrförmigen Elements vorsteht, damit es durch die zugewandte, im Boden vorgesehene zweite offnung verläuft.
  4. Vorrichtung nach den Ansprüchen 1 und 3, dadurch gekennzeichnet, dass das Rohr in einem Querschnitt längs einer Ebene, die zu dem Boden senkrecht ist und durch seine longitudinale Mittelebene verläuft, ungefähr wie ein rechtwinkliges Trapez geformt ist, in dem die parallelen Seiten zum Boden senkrecht sind und die schräge Seite von dem hinteren Ende des rohrförmigen Elements weggerichtet ist.
  5. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass zwei erste Ansätze von den longitudinalen Enden des Bodens des kastenartigen Körpers in der Nähe des vorderen Endes des rohrförmigen Elements und seitlich in Bezug auf das Rohr vorstehen und ungefähr in der gleichen Ebene wie der Boden liegen.
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass ein zweiter Ansatz von dem Boden des kastenartigen Körpers ungefähr rechtwinklig und zur Rückseite des Rohrs vorsteht und eine ungefähr rechtwinklige ebene Form besitzt, wobei ungefähr mittig hiervon eine dritte Öffnung vorgesehen ist.
  7. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass das rohrförmige Element und der kastenartige Körper am hinteren bzw. am vorderen Ende des rohrförmigen Elements durch einen ersten Flansch bzw. einen zweiten Flansch verschlossen sind, zwischen denen eine Welle einer Schneckenschraube drehbar unterstützt ist, wobei die Schneckenschraube die Pellets von dem hinteren Ende zu dem vorderen Ende des rohrförmigen Elements transportieren kann, damit sie aus dem Rohr, das die Ausgabe des Schraubenförderers bildet, durch die Schwerkraft austreten.
  8. Vorrichtung nach den Ansprüchen 1 und 7, dadurch gekennzeichnet, dass ein erstes Ende der Welle in einem Loch, das ungefähr mittig in Bezug auf den ersten Flansch gebildet ist, drehbar unterstützt ist, ein zweites Ende der Welle in einem geeignet vorgesehenen Sitz drehbar unterstützt ist, der ungefähr zylindrisch ist und durch einen ringförmigen Vorsprung gebildet ist, der ungefähr mittig von dem zweiten Flansch in Richtung zu der Innenseite des rohrförmigen Elements vorsteht.
  9. Vorrichtung nach den Ansprüchen 1 und 8, dadurch gekennzeichnet, dass das erste Ende der Welle in Längsrichtung aus dem rohrförmigen Element vorsteht und mit Bewegungserzeugungsmitteln, die vorzugsweise durch einen Getriebemotor gebildet sind, in Eingriff ist.
  10. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mittel für die gleichmäßige Verteilung und den Transport der Pellets in dem Brenner eine erste Rutsche umfassen, die ungefähr rechtwinklig von dem Boden des kastenartigen Körpers bei den ersten Ansätzen und in Richtung zum hinteren Ende des Rohrs vorsteht.
  11. Vorrichtung nach den Ansprüchen 1 und 10, dadurch gekennzeichnet, dass die erste Rutsche durch eine erste Platte gebildet ist, die ungefähr eben ist und zu dem Boden im Wesentlichen senkrecht ist und mit dem Boden sowie mit den ersten Ansätzen an einem ersten transversalen Ende hiervon an der Rückseite des Rohrs verbunden ist.
  12. Vorrichtung nach den Ansprüchen 1 und 11, dadurch gekennzeichnet, dass die erste Platte dem zweiten Ansatz starr zugeordnet ist.
  13. Vorrichtung nach den Ansprüchen 1 und 12, dadurch gekennzeichnet, dass in der ersten Platte in dem Bereich hiervon, der dem Rohr zugewandt ist, und bei der dritten Öffnung, die in dem zweiten Ansatz vorgesehen ist, eine vierte Öffnung vorgesehen ist.
  14. Vorrichtung nach den Ansprüchen 1 und 13, dadurch gekennzeichnet, dass zwei erste Schultern, die das Rohr seitlich umschließen, von den longitudinalen Enden der ersten Platte ungefähr rechtwinklig hierzu und in der entgegengesetzten Richtung in Bezug auf das hintere Ende des rohrförmigen Elements vorstehen.
  15. Vorrichtung nach den Ansprüchen 1 und 14, dadurch gekennzeichnet, dass die erste Rutsche mit dem ersten rohrförmigen Element mittels einer geeignet vorgesehenen Strebe verbunden ist, die mittels eines ihrer Enden am Boden des kastenartigen Körpers und mittels ihres anderen Endes an der ersten Platte befestigt ist.
  16. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass die drehbare Rutsche durch eine zweite Platte gebildet ist, die ungefähr flach ist und zu der ersten Platte im Wesentlichen parallel ist und vorteilhaft die Form eines ebenen, ungefähr gleichschenkligen Trapezes besitzt, in dem die längere parallele Seite zwischen dem Rohr und der ersten Ebene angeordnet ist.
  17. Vorrichtung nach Anspruch 16, dadurch gekennzeichnet, dass zwei zweite Schultern von den longitudinalen Enden der zweiten Platte ungefähr rechtwinklig und an dem gegenüberliegenden Ende in Bezug auf die erste Platte vorstehen und während des Gebrauchs in Bezug auf das Rohr seitlich und innerhalb der ersten Schultern der ersten Rutsche angeordnet sind.
  18. Vorrichtung nach Anspruch 17, dadurch gekennzeichnet, dass die zweite Platte der zweiten Rutsche in der Nähe ihrer längeren parallelen Seite mit einer sekundären Welle verkeilt ist, die in der Weise angeordnet ist, dass ihre Längsachse zu der ersten Platte ungefähr senkrecht ist, und der vierten Öffnung, die in der ersten Platte vorgesehen ist, und der dritten Öffnung des zweiten Ansatzes mittels geeigneter Drehunterstützungsmittel drehbar zugeordnet ist.
  19. Vorrichtung nach Anspruch 18, dadurch gekennzeichnet, dass die Drehunterstützungsmittel durch eine erste zylindrische Führung gebildet sind, die an dem zweiten Ansatz auf der gegenüberliegenden Seite in Bezug auf das Rohr befestigt ist, wobei sich die zweite Rutsche in Bezug auf die erste Rutsche um die Längsachse der sekundären Welle mittels der Wirkung geeigneter Bewegungsübertragungsmittel, die mit den Bewegungserzeugungsmitteln verbunden sind, drehbar ist.
  20. Vorrichtung nach Anspruch 19, dadurch gekennzeichnet, dass die Bewegungsübertragungsmittel eine erste Riemenscheibe, die mit dem Abschnitt des ersten Endes der Welle verkeilt ist, der von dem rohrförmigen Element vorsteht, und mittels eines Riemens mit einer zweiten Riemenscheibe verbunden ist, die an einer darunterliegenden Welle verkeilt ist, die zu der Welle ungefähr parallel ist und in Bezug zu dieser relativ zu einer Ebene, die zu der ersten Platte der ersten Rutsche senkrecht ist und durch die longitudinale Mittelachse hiervon verläuft, axial versetzt ist.
  21. Vorrichtung nach Anspruch 20, dadurch gekennzeichnet, dass die Welle durch eine zweite zylindrische Führung drehbar unterstützt ist, die ihrerseits durch einen geeignet vorgesehenen Arm unterstützt ist, der mit dem kastenartigen Körper verbunden ist, wobei ein Nocken mit dem Ende der Welle verkeilt ist, das zu der ersten Rutsche gerichtet ist, wobei ein Ende eines Gestänges an dem Nocken angelenkt ist, wobei das Gestänge an seinem anderen Ende an einer Kurbel angelenkt ist, die mit der zweiten Welle verkeilt ist.
EP06123782A 2005-11-18 2006-11-09 Vorrichtung zum Zuführen und Verteilen von Brennstoff in einen Brenner, insbesondere in einem mit Pellets betriebenen Brenner oder Ofen Not-in-force EP1788307B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000180A ITTV20050180A1 (it) 2005-11-18 2005-11-18 Dispositivo per l'immissione e la distribuzione del combustibile in un bruciatore particolarmente per una caldaia o stufa a pellets

Publications (2)

Publication Number Publication Date
EP1788307A1 EP1788307A1 (de) 2007-05-23
EP1788307B1 true EP1788307B1 (de) 2011-03-30

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EP06123782A Not-in-force EP1788307B1 (de) 2005-11-18 2006-11-09 Vorrichtung zum Zuführen und Verteilen von Brennstoff in einen Brenner, insbesondere in einem mit Pellets betriebenen Brenner oder Ofen

Country Status (4)

Country Link
EP (1) EP1788307B1 (de)
AT (1) ATE503968T1 (de)
DE (1) DE602006020970D1 (de)
IT (1) ITTV20050180A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011013949A1 (de) * 2011-03-14 2012-09-20 Spartherm Feuerungstechnik Gmbh Vorrichtung zum Verbrennen von festen Brennstoffen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4619209A (en) * 1985-08-08 1986-10-28 Traeger Joseph P Furnace construction
US5070798A (en) * 1990-08-31 1991-12-10 Heatilator, Inc. Pellet burner appliances and burners therefor
DE4200721C2 (de) * 1991-02-19 2002-11-28 Riener Karl Stefan Ofen für feste Brennstoffe, insbesondere für Pellets
SE9903777L (sv) * 1999-10-20 2001-01-29 Energifraagan Ab Matningsanordning med vertikal skruvmatare för en brännare av partikelgods och kamin med sådan matningsanordning

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011013949A1 (de) * 2011-03-14 2012-09-20 Spartherm Feuerungstechnik Gmbh Vorrichtung zum Verbrennen von festen Brennstoffen
DE102011013949B4 (de) * 2011-03-14 2013-01-31 Spartherm Feuerungstechnik Gmbh Vorrichtung zum Verbrennen von festen Brennstoffen

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EP1788307A1 (de) 2007-05-23
ITTV20050180A1 (it) 2007-05-19
ATE503968T1 (de) 2011-04-15
DE602006020970D1 (de) 2011-05-12

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