EP2816283A1 - Cavité de combustion et four doté d'une cavité de combustion - Google Patents

Cavité de combustion et four doté d'une cavité de combustion Download PDF

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Publication number
EP2816283A1
EP2816283A1 EP14001798.9A EP14001798A EP2816283A1 EP 2816283 A1 EP2816283 A1 EP 2816283A1 EP 14001798 A EP14001798 A EP 14001798A EP 2816283 A1 EP2816283 A1 EP 2816283A1
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EP
European Patent Office
Prior art keywords
trough
operating state
combustion
bearing surface
biomass fuel
Prior art date
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.)
Withdrawn
Application number
EP14001798.9A
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German (de)
English (en)
Inventor
Karl Stefan Riener
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Individual
Original Assignee
Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP2816283A1 publication Critical patent/EP2816283A1/fr
Withdrawn legal-status Critical Current

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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
    • F23B40/00—Combustion apparatus with driven means for feeding fuel into the combustion chamber
    • F23B40/06—Combustion apparatus with driven means for feeding fuel into the combustion chamber the fuel being fed along the fuel-supporting surface
    • F23B40/08—Combustion apparatus with driven means for feeding fuel into the combustion chamber the fuel being fed along the fuel-supporting surface into pot- or trough-shaped grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H13/00—Grates not covered by any of groups F23H1/00-F23H11/00
    • F23H13/02—Basket grates, e.g. with shaking arrangement

Definitions

  • the present invention relates generally to a combustion trough and an oven having such a combustion trough.
  • stoves for heat generation which are particularly suitable for the combustion of pourable biomass fuel, such as wood chips or pellets.
  • pourable biomass fuel such as wood chips or pellets.
  • ovens are typically also used in living quarters, e.g. set up in the form of a stove.
  • the pourable biomass fuel for combustion is arranged on a combustion grate in a so-called combustion trough of a furnace.
  • the firing well typically surrounds the firing grid and forms a trough, i. a (flat) vessel to receive the biomass fuel for combustion.
  • the combustion grate of a furnace can be designed as a so-called Kipprost.
  • the tipping grate is rotatably mounted and can be rotated in order to tip combustion residues into an ash box arranged under the tipping grate.
  • the object of the present invention is to provide an improved combustion trough or an oven with such a combustion trough.
  • the present invention provides a combustion trough in accordance with independent claim 1.
  • the present invention provides a furnace with a combustion trough according to the first aspect in accordance with claim 8.
  • the embodiments relate to a combustion trough for pourable biomass fuel, such as e.g. Woodchips or pellets.
  • Bulk biomass fuel here comprises shredded or molded biomass fuel which, for example, can be transported in sacks and can be portioned well for different heating power requirements.
  • the firing well is typically configured for an oven, such as a pellet and / or wood chip oven or the like.
  • an oven such as a pellet stove or woodchip oven or the like, configured for the combustion of bulk biomass fuel and having a firebox, as described below.
  • the known from the prior art fuel trough has a fixed volume for Intake of pellets. If only a small amount of pellets is introduced for combustion in such known from the prior art pellet burner, it may be the heat generation during combustion is so low that the combustion is stopped. This can happen, for example, if the pellets are arranged at a small amount of pellets only one by one and without contact with each other in the pellet burner. The user of a pellet stove with such a pellet burner must therefore fill a sufficient amount of pellets in the pellet burner, so that the combustion is safely maintained and all pellets burn. However, this is undesirable since the user may only want lower heat output and / or short burn time and consequently would like to burn a smaller amount of pellet than the pellet burner well size dictates.
  • the combustion trough according to the embodiments of the present invention is designed to be variably variable and can provide different trough volumes. As a result, a good heat development and good combustion behavior and thus good combustion is possible even at low biomass fuel quantities.
  • the combustion trough comprises a bottom section for receiving the pourable biomass fuel.
  • the bottom portion may be configured as a flat surface on which the pourable biomass fuel is placed by an operator or an automation arranging a certain amount of the pourable biomass fuel on the bottom portion.
  • the firing well further includes a wall portion that extends at least partially around the bottom portion.
  • the wall section may at least partially serve as a boundary for the biomass fuel.
  • the bottom portion and the wall portion together form a trough, i. a (flat) vessel for receiving the free-flowing biomass fuel.
  • At least one limiting element is provided, which extends from the bottom portion vertically.
  • the limiting element serves as a boundary for the pourable biomass fuel.
  • the boundary member extends perpendicularly or substantially perpendicularly away from the bottom portion and forms a boundary wall for the bulk biomass fuel.
  • two or more limiting elements are provided. In this case, two limiting elements can be arranged opposite one another on one side of the bottom section. It can also be arranged limiting elements on both sides of the bottom portion.
  • the combustion trough is set up so that it can occupy at least two operating states.
  • the bottom section In a first operating state, the bottom section has a first bearing surface for receiving the free-flowing biomass fuel.
  • the free-flowing biomass fuel can be distributed over a larger area than in the second operating state. Conversely, this means that in the second operating state, the free-flowing biomass fuel is distributed on a smaller contact surface, resulting in particular in a small amount that then the biomass fuel is more compact together than would be the case on the first, larger contact surface.
  • the first and the second support surface may be formed on the same side of the bottom portion and / or on opposite sides of the bottom portion.
  • the first bearing surface is limited in some embodiments substantially of the wall portion.
  • the second bearing surface is at least partially bounded by the at least one limiting element.
  • the second bearing surface can also be limited by two limiting elements. In some embodiments, e.g. two boundary elements and parts of the wall portion, each extending between the boundary elements, the second support surface.
  • a smaller trough for receiving the free-flowing biomass fuel may be formed, inter alia, by the at least one delimiting element than is the case in the first operating state.
  • the lower contact surface of the second operating state leads, as indicated above, to a certain amount of filled, pourable biomass fuel typically being more compact, that is to say having a plurality of layers one above the other, than in the first operating state.
  • a certain amount of filled, pourable biomass fuel typically being more compact that is to say having a plurality of layers one above the other, than in the first operating state.
  • free-flowing biomass fuel it may happen, for example, that such an amount could be arranged on the first support surface only in one layer, while it is arranged stacked on the second (smaller) support surface due to the smaller area size.
  • the combustion trough can generally be set to the first or second operating state manually and / or automatically. This may either be provided directly on the firing pit itself or it may be e.g. a corresponding device in an oven in which the combustion trough is provided arranged.
  • the bottom portion is rotatably supported in some embodiments. As a result, combustion residues can be dumped into an ash box arranged below the bottom section.
  • the bottom section e.g. by 180 °
  • the combustion trough from the first to the second operating state and vice versa may be formed on one side / main surface of the bottom portion and the second bearing surface on the second opposite side / surface of the bottom portion.
  • the first bearing surface may be formed on one side / main surface of the bottom portion and the second bearing surface on the second opposite side / surface of the bottom portion.
  • the bottom section e.g. rotated 180 °, so that the second bearing surface is arranged at the top and the first below. This rotation can be done manually and / or automatically, as stated above.
  • the at least one limiting element is (only) arranged on one side of the bottom section in some embodiments. For some, no boundary element is arranged on the other side accordingly.
  • the at least one limiting element is displaceable and arranged in a first position in the first operating state and in a second position in the second operating state so that it at least partially limits the first bearing surface in the first operating state and the second bearing surface in the second operating state.
  • the shift can be done manually and / or automatically.
  • the limiting element may, for example, be displaceably arranged in the bottom section via a rail guide.
  • two limiting elements are provided on one side of the bottom portion, the distance of which is adjustable relative to each other.
  • the delimiting elements In a first relative position with a first distance to one another, the delimiting elements at least partially define the first bearing surface and in a second relative position with a second, smaller distance from each other they at least partially define the second bearing surface.
  • the limiting elements In the first operating state, the limiting elements are arranged in the first position and in the second operating state in the second position.
  • the bottom section can also be designed as a grate, in particular as a tilting grate.
  • the bottom section may optionally have a series of apertures or holes through which combustion debris is forced downwards by gravity, e.g. fall into an underlying ash pan.
  • primary air can also be supplied through the perforations from below to the biomass fuel arranged on the bottom section on the first or second support surface.
  • the wall portion has at least one opening into which engages the at least one limiting element in one of the two operating states. This makes it possible, for example, for the rotation of the bottom section from the first operating state to the second operating state, for the limiting element or limiting elements, which partially define the second supporting surface, to be pivoted into the trough space formed by the wall section Turn around.
  • At least one locking portion is provided, which engages in the other operating state in the at least one opening. As a result, the openings in the wall section are closed in any operating state, so that no biomass fuel can fall through.
  • Some embodiments relate to a furnace having a combustion chamber and a combustion trough, wherein the combustion trough is arranged in the lower region of the combustion chamber. Upon combustion of the bulk biomass fuel in the combustion trough, the resulting flames may extend into the combustion chamber.
  • the furnace can be designed as a pellet stove and the firing pit accordingly as a pellet burner.
  • the furnace is formed together with the combustion trough for the combustion of wood chips.
  • the oven is adapted to automatically set the firing tray in the first and in the second operating state.
  • the furnace has an electronic control or regulation and a means for setting the combustion trough in the first or second operating state.
  • the electronic control is set up to set the combustion trough in the first or second operating state as a function of a heating power requirement.
  • the electronic controller may include a microprocessor and a memory for storing a control program and control data.
  • the means for setting the combustion trough into the first and second operating states can be formed, for example, by an electric drive which, for example, as described above, rotates the bottom section and / or displaces the limiting section.
  • the means for setting the combustion bowl in the first and second operating states comprises a hydraulic drive or a combination thereof or a different kind of mechanical drive.
  • the oven may include an input device in which a user inputs whether he wants a high or a low heating power requirement. Depending on whether more or less biomass fuel is needed and set the combustion trough in the first operating state (higher heat output) or second operating state (lower heat output) and filled according to biomass fuel.
  • a lever, a slider or a crank is provided to rotate the bottom portion as above or to move the boundary element (s).
  • Fig. 1 illustrates the pellet burner 1 in a first operating state with a first pellet bearing surface 5a.
  • the Fig. 2 illustrates the pellet burner 1 in a transition from the first to a second operating state, which in Fig. 3 is illustrated and in which the pellet burner has a second pellet bearing surface 5b, wherein the second Palletauflage requirements 5b is smaller than the first Pelleltauflage constitutional 5a in the first operating state.
  • the pellet burner 1 is adapted for the combustion of pellets and may e.g. be used in a pellet stove.
  • the pellet burner 1 has an outer wall section 3, which extends annularly around a bottom section 2.
  • the bottom portion 2 and the outer wall portion 3 together form a trough in which pellets can be taken up and burned, the bottom portion 2 forming the bottom of this trough.
  • the bottom portion 2 is formed as a dip with holes 9 through which primary air can be supplied for combustion and can fall through the combustion residues down.
  • the holes 9 are designed so that pellets do not fit through and therefore can not fall through, but remain on the bottom portion 2 and the support surface 5a and 5b of the bottom portion 2.
  • embodiments are also provided without holes in the bottom section.
  • the bottom section 2 is rotatably supported by a shaft 8 which extends into a corresponding bearing in the wall section 3.
  • the shaft can also be integrated in the bottom section.
  • a first larger bearing surface 5a is formed on the bottom portion 2.
  • the boundary of the larger support surface 5a is formed essentially by the outer wall section 3 and the bottom section 2, so that the support surface 5a the entire top of the bottom section 2 occupies.
  • the bottom portion 2 can be rotated by 180 °, as in Fig. 2 indicated, so im in Fig. 3 illustrated second operating state, the second smaller bearing surface 5b is at the top.
  • the second smaller bearing surface 5b is delimited by two opposite regions of the outer wall section 3, which each extend between two opposing boundary elements 4a and 4b.
  • the two boundary elements 4a and 4b extending opposite each other extend vertically upward from the bottom section 2 in the second operating state and form two boundary walls.
  • the boundary elements 4a and 4b are disposed within the outer wall portion 3 and thereby reduce the trough volume. Together with the opposite regions of the outer wall section and the small bearing surface 5b of the bottom section 2, they form a smaller recess for receiving pellets than is the case in the first operating state.
  • the outer wall portion 3 has respective openings 6a to 6d formed in a slot shape in the outer wall portion 3 at the positions where the restriction members 4a and 4b engage.
  • the limiting elements 4a and 4b In the second operating state, in which the small bearing surface 5b is arranged at the top, so that the pellets can be arranged on it for combustion, the limiting elements 4a and 4b thus engage in the apertures 6a to 6d essentially with their outer edge regions.
  • the openings 6a to 6d are slightly thicker than the wall thickness of the limiting elements 4a and 4b. They are dimensioned so that no pellets can fall through the gap, which forms when the limiting elements 4a and 4b engage in the openings 6a to 6d.
  • the bottom portion 2 Since in the first operating state, the bottom portion 2 is rotated by 180 ° with respect to the second operating state and consequently the limiting elements 4a and 4b point downwards in the first operating state and do not engage in the apertures 6a to 6d (see FIG Fig. 1 ), are opposite to the limiting elements 4a and 4b rod-shaped locking portions 7a to 7d provided that extend from the bottom portion 2 so that they engage in the first operating state in the openings 6a to 6d and close this, so that no pellets through the openings 6a to 6d can fall through.
  • the locking portions 7a to 7d are formed in their cross-section so that they substantially close the apertures 6a to 6d and quasi steadily continue the outer wall portion 3 and do not protrude into the interior of the trough.
  • the locking portions 7a to 7d are arranged in pairs opposite one another and are located on the opposite side of the bottom portion 2 with respect to the limiting elements 4a and 4b at the same positions on which the limiting elements 4a and 4b are arranged. They therefore limit in the first operating state as parts of the outer wall portion 3 and the first larger bearing surface 5a.
  • the limiting elements 4a and 4b as well as the blocking sections 7a to 7d are essentially integrally formed on the bottom section 2 in the present embodiment.
  • the limiting members 4a and 4b and / or the locking portions 7a to 7d may also be otherwise secured to the bottom portion 2 (e.g., bolted, riveted, inserted, inserted, or the like).

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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)
EP14001798.9A 2013-06-17 2014-05-22 Cavité de combustion et four doté d'une cavité de combustion Withdrawn EP2816283A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013010191.3A DE102013010191B4 (de) 2013-06-17 2013-06-17 Brennmulde und Ofen mit Brennmulde

Publications (1)

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EP2816283A1 true EP2816283A1 (fr) 2014-12-24

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EP14001798.9A Withdrawn EP2816283A1 (fr) 2013-06-17 2014-05-22 Cavité de combustion et four doté d'une cavité de combustion

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EP (1) EP2816283A1 (fr)
DE (1) DE102013010191B4 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2853812A1 (fr) * 2013-09-25 2015-04-01 MCZ Group S.p.A. Brasero amélioré, en particulier pour poêles à granules
EP3067620A1 (fr) * 2015-03-13 2016-09-14 Ravelli S.r.l. Âtre autonettoyant pour appareil de chauffage
FR3039886A1 (fr) * 2015-08-03 2017-02-10 David Lachaize Creuset a capacite variable d'un poele a granules, organise en de multiples configurations de fonctionnement
CN107726326A (zh) * 2017-10-13 2018-02-23 李艺 一种热解垃圾时采用气缸摆动式掉渣设备
WO2018172806A2 (fr) 2017-03-06 2018-09-27 Mbh Biomassza Kazán Kft. Brûleur à granulés amélioré

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE309346C (fr) *
DE39194C (de) * h. HEIM in Oberdöbling bei Wien, Währingergasse 12 Rost für Heizöfen
US5941234A (en) * 1996-12-30 1999-08-24 Energex Inc. Combustion cage for wood pellet and other solid fuel combustion
DE202005016038U1 (de) * 2005-10-10 2007-03-29 "Calimax" Entwicklungs- & Vertriebs-Ges. M.B.H. Feuerschale
EP2333410A2 (fr) * 2009-11-19 2011-06-15 Tulikivi Oyj Brûleur pour combustible solide et four
EP2500650A2 (fr) 2011-03-14 2012-09-19 Karl Stefan Riener Procédé de réglage d'un dispositif de chauffage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT367895B (de) 1978-11-10 1982-08-10 Windhager Ohg Anton Heizkessel
DE8002946U1 (de) 1980-02-05 1980-06-12 Boekhoff & Co, 2950 Leer Feuerung fuer gusseiserne kaminoefen mit abzug

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE309346C (fr) *
DE39194C (de) * h. HEIM in Oberdöbling bei Wien, Währingergasse 12 Rost für Heizöfen
US5941234A (en) * 1996-12-30 1999-08-24 Energex Inc. Combustion cage for wood pellet and other solid fuel combustion
DE202005016038U1 (de) * 2005-10-10 2007-03-29 "Calimax" Entwicklungs- & Vertriebs-Ges. M.B.H. Feuerschale
EP2333410A2 (fr) * 2009-11-19 2011-06-15 Tulikivi Oyj Brûleur pour combustible solide et four
EP2500650A2 (fr) 2011-03-14 2012-09-19 Karl Stefan Riener Procédé de réglage d'un dispositif de chauffage

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2853812A1 (fr) * 2013-09-25 2015-04-01 MCZ Group S.p.A. Brasero amélioré, en particulier pour poêles à granules
EP3067620A1 (fr) * 2015-03-13 2016-09-14 Ravelli S.r.l. Âtre autonettoyant pour appareil de chauffage
FR3039886A1 (fr) * 2015-08-03 2017-02-10 David Lachaize Creuset a capacite variable d'un poele a granules, organise en de multiples configurations de fonctionnement
WO2018172806A2 (fr) 2017-03-06 2018-09-27 Mbh Biomassza Kazán Kft. Brûleur à granulés amélioré
EP3593043A4 (fr) * 2017-03-06 2020-12-16 Mbh Biomassza Kazán Kft. Brûleur à granulés amélioré
CN107726326A (zh) * 2017-10-13 2018-02-23 李艺 一种热解垃圾时采用气缸摆动式掉渣设备
CN107726326B (zh) * 2017-10-13 2019-06-28 李艺 一种热解垃圾时采用气缸摆动式掉渣设备

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Publication number Publication date
DE102013010191A1 (de) 2014-12-18
DE102013010191B4 (de) 2018-08-16

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