EP1797370A2 - Bruleur particulierement utile pour des combustibles solides - Google Patents

Bruleur particulierement utile pour des combustibles solides

Info

Publication number
EP1797370A2
EP1797370A2 EP05802391A EP05802391A EP1797370A2 EP 1797370 A2 EP1797370 A2 EP 1797370A2 EP 05802391 A EP05802391 A EP 05802391A EP 05802391 A EP05802391 A EP 05802391A EP 1797370 A2 EP1797370 A2 EP 1797370A2
Authority
EP
European Patent Office
Prior art keywords
firebox
combustion
containment
stove
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Withdrawn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
EP05802391A
Other languages
German (de)
English (en)
Inventor
Giuseppe Corradi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
J Corradi Srl
Original Assignee
J Corradi Srl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from ITVR20040155 external-priority patent/ITVR20040155A1/it
Priority claimed from ITVR20050108 external-priority patent/ITVR20050108A1/it
Application filed by J Corradi Srl filed Critical J Corradi Srl
Publication of EP1797370A2 publication Critical patent/EP1797370A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B50/00—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone
    • F23B50/02—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone the fuel forming a column, stack or thick layer with the combustion zone at its bottom
    • F23B50/04—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone the fuel forming a column, stack or thick layer with the combustion zone at its bottom the movement of combustion air and flue gases being substantially transverse to the movement of the fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B1/00—Combustion apparatus using only lump fuel
    • F23B1/16—Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support
    • F23B1/28—Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support using ridge-type grate, e.g. for combustion of peat, sawdust, or pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B1/00—Combustion apparatus using only lump fuel
    • F23B1/30—Combustion apparatus using only lump fuel characterised by the form of combustion chamber
    • F23B1/38—Combustion apparatus using only lump fuel characterised by the form of combustion chamber for combustion of peat, sawdust, or pulverulent fuel on a grate or other fuel support
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B50/00—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone
    • F23B50/12—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone the fuel being fed to the combustion zone by free fall or by sliding along inclined surfaces, e.g. from a conveyor terminating above the fuel bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • 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
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H15/00—Cleaning arrangements for grates; Moving fuel along grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2204/00—Supplementary heating arrangements
    • F23G2204/20—Supplementary heating arrangements using electric energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2205/00—Waste feed arrangements
    • F23G2205/12—Waste feed arrangements using conveyors
    • F23G2205/121—Screw conveyor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/26—Biowaste
    • F23G2209/261—Woodwaste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2700/00—Ash removal, handling and treatment means; Ash and slag handling in pulverulent fuel furnaces; Ash removal means for incinerators
    • F23J2700/003—Ash removal means for incinerators

Definitions

  • the present invention relates to a burner and to a stove associated therewith, " which can be supplied with solid fuel, such as pellets, wood, mixed wood/pellets fuel, waste of oleaginous seeds, macerated kernel shells, macerated toiomasses, or similar fuels.
  • solid fuel such as pellets, wood, mixed wood/pellets fuel, waste of oleaginous seeds, macerated kernel shells, macerated toiomasses, or similar fuels.
  • Stoves are commercially available which are composed of a containment body for a firebox into which the fuel to be burned is fed by means of per se known devices.
  • the firebox (or, if provided, the firebox holder) is connected generally to an air intake, which as a consequence of the partial vacuum that occurs within the containment body, or rather the combustion chamber, allows to draw air from outside the stove in order to feed it to the firebox. Since the firebox is generally perforated due to the presence (at its bottom and/or its side wall) of openings, the air that enters the firebox holder, if provided, is fed to the firebox and therefore feeds the combustion of the solid fuel.
  • an opening designed to be crossed by an ignition device adapted to raise the fuel to the appropriate temperature.
  • mixed-feed stoves which initially feed the firebox with the fuel which is easily flammable (for example pellets) and then mix with such fuel a gradually increasing percentage of the other type of fuel once a temperature sufficient to ensure good combustion has foeen reached inside the firebox.
  • the openings and apertures provided in the firebox must have such dimensions as to ensure a sufficient flo ⁇ v of air inside the burner.
  • their dimensions on the one hand must allow to retain the fuel to be burned within the seat formed by the firebox and on the other hand must allow the ash, or in any case most of it, to fall into the collection compartment arranged below the firebox.
  • burners In currently commercially available stoves, burners have openings whose dimensions are such as to ensure a sufficient air stream but do not allow to evacuate effectively the ash and residues of combustion deposited on the bottom of the firebox.
  • an object of the present invention is to provide a burner which can use a broad range of solid fuels.
  • Another object of the present invention is to provide a stove which can offer better operating efficiency.
  • Another object of the present invention is to provide a stove which has a burner capable of burning any type of solid fuel without the user having to worry about cleaning the combustion firebox.
  • Figure 1 is a front elevation view of a first embodiment of a stove according to the invention
  • Figure 2 is a side elevation view of the stove of Figure 1;
  • Figure 3 is a top elevation view of the stove of Figures 1 and 2;
  • Figure 4 is a sectional view of the stove, taken along the plane of arrangement IV-IV of Figure 1;
  • FIG. 5 is a sectional view of the stove, taken along the plane of arrangement V-V of Figure 3;
  • Figure 6 is a top view of the heating means
  • Figure 7 is a side elevation view of a containment firebox
  • Figure 8 is a top elevation view of the containment firebox illustrated in Figure 7;
  • Figure 9 is a front elevation view of a second embodiment of a stove according to the invention.
  • Figure 10 is a sectional view, taken along the plane of arrangement X- X of Figure 9;
  • Figure 11 is a view of a possible variation of the burner associated with the stove shown in Figures 9 and 10;
  • Figure 12 is an enlarged-scale sectional view of Figure 10 related to the region of the burner
  • Figure 13 is an enlarged-scale view of the variation of the burner shown in Figure 11 ;
  • Figure 14 is a partially sectional perspective view of a particular embodiment of a burner which can be associated with a stove according to the invention; and Figure 15 is a perspective view of a cylindrical element which constitutes the closure element. Ways of carrying out the invention
  • a stove which can be supplied with solid fuel (pellets, wood, wood/pellet mix, waste of oleaginous seeds, macerated shells and kernels, macerated biomasses or similar materials), generally designated by the reference numeral 1, comprises a containment body 2, inside which, generally at the back 3, there is a reservoir 4 for containing the fuel used to feed the stove 1.
  • solid fuel pellets, wood, wood/pellet mix, waste of oleaginous seeds, macerated shells and kernels, macerated biomasses or similar materials
  • the containment reservoir 4 is associated with a device 5 for feeding the fuel into a combustion firebox 6, which forms a containment seat inside which the combustion of the fuel occurs.
  • a screw feeder 7 which is adapted to draw from the fuel in order to feed it to the combustion firebox 6.
  • combustion firebox 6 is supported by a firebox holder 8.
  • the combustion firebox 6 has at least one heating portion 9 at which there is a plurality of openings 9a.
  • the stove 1 is further provided with heating means 11, which are arranged so as to at least partially face the heating portion 9 formed on the combustion firebox 6.
  • the combustion firebox 6 has a bottom portion (which in the illustrated case corresponds substantially to the heating portion 9), which is connected to a lateral containment surface 12, which can have equally a rectangular cross- section but also a circular or oval cross-section.
  • the lateral containment surface 12 also has a plurality of openings 9a; in this case, there is nothing to prevent the heating portion 9 from being provided at a region formed on the lateral containment region 12 of the combustion firebox 6.
  • the heating means 11 are arranged, during use, below the bottom portion of the combustion firebox 6 and have a series of gaps 14, which allow the ash and the combustion products to fall into a collection compartment 102.
  • the heating means 11 can be constituted by a coil 12a, which can be connected, at the respective connection ends 13, to an electric power supply.
  • heating means 11 allow to heat by radiation and rapidly and effectively, through the openings 9a, the fuel contained within the combustion firebox 6.
  • a stove 1 has a burner 101 which is designed to burn solid fuels in general.
  • the burner 101 comprises a combustion firebox 6, which forms a containment seat for the fuel to be burnt.
  • the supply device 5 has a containment reservoir 4, from which a screw feeder 7 draws the fuel in order to feed it into the containment seat.
  • the combustion firebox 6 comprises at least one containment body 10, which forms in a downward region a discharge outlet 10a, which is closed at least partially by a closure portion 100a provided on a closure element 100.
  • the closure element 100 can move along at least one movement direction in order to move at least one part of a discharge portion 100b, arranged upstream of the closure portion 100a, along the movement direction into a position for closing the outlet 10a and at the same time move at least part of the closure portion 100a outside the containment receptacle.
  • the burner 101 is provided with means for discharging the residues of combustion from the discharge portion 100b into a collection compartment 102.
  • the combustion residues are meant to pass by gravity from the discharge portion 100b into the collection compartment 102.
  • the collection compartment 102 is arranged below the discharge portion 100b.
  • At least part of the discharge portion 100b lies on a plane which is inclined with respect to the horizontal plane, or its surface meant to support the combustion residues is, during movement, adapted to be arranged so that it faces the collection compartment 102.
  • the containment body 10 is provided with a plurality of openings 9b adapted to allow to feed air into the containment seat.
  • the closure element 100 also comprises a plurality of openings 9a, which are adapted to allow the feeding of air into the receptacle.
  • the closure element 100 can be constituted by at least one cylindrical element 110, associated with a supporting shaft which is supported by the burner so that it can rotate about a respective movement axis.
  • the closure element 100 can be constituted by two cylindrical elements 110, the longitudinal axes whereof are parallel and face each other.
  • the closure element 100 can be constituted by a conical or frustum-shaped element, supported by a supporting shaft which is supported by the burner 101 so that it can rotate about a movement axis.
  • the burner 101 is provided with means for moving the closure element 100 along said at least one movement direction.
  • Said movement means can be constituted by a motor 120, which can be controlled from a control unit and is adapted to move a motor shaft, which is connected kinematically to the supporting shaft or shafts of the cylindrical elements 110 or generally to the closure elements 100.
  • the control unit can be programmed in order to move the closure elements 100 at specified time intervals and at specified movement speeds depending on the fuels used or on the characteristics of combustion.
  • a stove 1 has, above the combustion firebox 6, a combustion chamber 20.
  • the stove 1 is provided with forced ventilation means 21, which are adapted to draw hot air at a collection pocket 22 arranged adjacent to the combustion chamber 20 and are adapted to send the drawn hot air toward said combustion firebox 6.
  • the containment body 2 comprises a front closure hatch 24, which is substantially transparent.
  • the forced ventilation means 21 are associated with at least one baffle 25, which is adapted to direct a portion of the hot air propelled by said forced ventilation means 21 so that it strikes (tangentially) the front closure panel 24.
  • the forced ventilation means 21 can be constituted by a fan.
  • the supply means feed fuel, of any kind, to the combustion firebox, while the control unit controls the actuation of the heating means 11 so as to allow to transfer heat, substantially by radiation, through the openings 9a, to the fuel contained within the combustion firebox 6.
  • the heating means are switched off and combustion is self-sustained by the flames generated by the combustion proper.
  • the motor means move the movement means and therefore the closure elements 100.
  • the closure means 100 are constituted, as shown, by one or more cylindrical elements 110, their rotation about their own longitudinal axis produces the passage of the closure portion 100a outside the seat, with the consequence that the ash deposited thereon moves, in a first step, out of the seat and then into the collection compartment 102.
  • part of the cylindrical element or elements 110 arranged upstream of the closure portion 101a are arranged at the outlet 10a (thus providing the new closure portion 100a), with the advantage of achieving the discharge of the ash without interrupting combustion, since the seat is closed even on its bottom at all times at its outlet 10a.
  • the stove is provided with forced ventilation means and with the baffle, it has been found that the wall of the air that strikes the closure hatch allows to keep it clean without compromising in any way the functionality and thermal efficiency of the stove. All the characteristics of the invention described above as advantageous, convenient or the like may also be omitted or be replaced with equivalents.

Landscapes

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

Abstract

Cette invention concerne un brûleur particulièrement utile pour des combustibles solides. Ce brûleur comprend une chambre de combustion qui forme une plaque de confinement (4) permettant aux combustibles d'être brûlés, et un moyen (5) permettant d'amener les combustibles vers la plaque de confinement (4). La chambre de combustion (6) comprend au moins un corps de confinement qui forme, dans une zone en aval, un orifice de décharge fermé au moins en partie par une partie d'obturation ménagée sur un élément obturateur; l'élément obturateur peut se déplacer le long d'au moins un axe de déplacement afin de déplacer au moins une partie d'une zone de décharge ménagée en amont de la partie d'obturation le long du sens du déplacement dans une position permettant l'obturation de l'orifice de décharge, et afin de déplacer au moins une partie de la partie d'obturation à l'extérieur de la plaque.
EP05802391A 2004-10-06 2005-10-04 Bruleur particulierement utile pour des combustibles solides Withdrawn EP1797370A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITVR20040155 ITVR20040155A1 (it) 2004-10-06 2004-10-06 Stufa
ITVR20050108 ITVR20050108A1 (it) 2005-09-14 2005-09-14 Bruciatore, particolarmente per combustibili solidi
PCT/IT2005/000572 WO2006038242A2 (fr) 2004-10-06 2005-10-04 Bruleur particulierement utile pour des combustibles solides

Publications (1)

Publication Number Publication Date
EP1797370A2 true EP1797370A2 (fr) 2007-06-20

Family

ID=35560973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05802391A Withdrawn EP1797370A2 (fr) 2004-10-06 2005-10-04 Bruleur particulierement utile pour des combustibles solides

Country Status (2)

Country Link
EP (1) EP1797370A2 (fr)
WO (1) WO2006038242A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2947328B1 (fr) * 2009-06-24 2012-05-25 Supra Dispositif de chauffage par combustion de combustible solide fragmente
ITMI20120214A1 (it) * 2012-02-15 2013-08-16 Laminox S R L Apparecchio da riscaldamento semplificato a combustione naturale
ITBO20130460A1 (it) * 2013-08-09 2015-02-10 Amantini Projects S N C Dispositivo a bruciatore per combustibili solidi

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4200721C2 (de) * 1991-02-19 2002-11-28 Riener Karl Stefan Ofen für feste Brennstoffe, insbesondere für Pellets
US5297493A (en) * 1993-03-16 1994-03-29 Nuesmeyer David L Burn pot for particulate combustors
US5582117A (en) * 1995-06-06 1996-12-10 Mendive Needs Corporation Firepot with ash-dumping floor
DK9700348U3 (da) * 1997-09-23 1997-12-29 Greenfire Aps Stokerbrændeovn til træpiller
US5893358A (en) * 1997-11-04 1999-04-13 Pyro Industries, Inc. Pellet fuel burner for heating and drying systems
FR2857732A1 (fr) * 2003-07-15 2005-01-21 Perge Chaudiere de chauffage a combustible du type a elements individualises

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006038242A3 *

Also Published As

Publication number Publication date
WO2006038242A8 (fr) 2007-03-08
WO2006038242A2 (fr) 2006-04-13
WO2006038242A3 (fr) 2006-09-14

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