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EP1970623A2 - Chaudière à combustible solide - Google Patents

Chaudière à combustible solide Download PDF

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Publication number
EP1970623A2
EP1970623A2 EP08152357A EP08152357A EP1970623A2 EP 1970623 A2 EP1970623 A2 EP 1970623A2 EP 08152357 A EP08152357 A EP 08152357A EP 08152357 A EP08152357 A EP 08152357A EP 1970623 A2 EP1970623 A2 EP 1970623A2
Authority
EP
European Patent Office
Prior art keywords
fuel
burner
space
grille
interspace
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Withdrawn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
EP08152357A
Other languages
German (de)
English (en)
Other versions
EP1970623A3 (fr
Inventor
Michele Cavallini
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.)
Arca Srl
Original Assignee
Arca 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
Application filed by Arca Srl filed Critical Arca Srl
Publication of EP1970623A2 publication Critical patent/EP1970623A2/fr
Publication of EP1970623A3 publication Critical patent/EP1970623A3/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Withdrawn legal-status Critical Current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
    • 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
    • F23B50/06—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 flue gases being removed downwards through one or more openings in the fuel-supporting surface
    • 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
    • F23B1/02—Combustion apparatus using only lump fuel for indirect heating of a medium in a vessel, e.g. for boiling water
    • F23B1/08—Internal furnaces, i.e. with furnaces inside the vessel
    • 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
    • F23B50/08—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 with fuel-deflecting bodies forming free combustion spaces inside the fuel layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
    • F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H2230/00—Solid fuel fired boiler

Definitions

  • the present invention relates to a solid fuel boiler.
  • Solid fuel boilers which comprise a wall provided with an interspace for containing the fluid to be heated, very commonly constituted by water, which delimits a portion of space which comprises a burner provided with a grille which divides such portion of space into an upper region, which is designed to contain the fuel, and a lower region, which comprises the combustion chamber and heat exchange surfaces which are designed to be struck by the products of the combustion before being sent to the stack.
  • This mix is aspirated through the openings of the grille of the burner, where it receives an addition of secondary air and passes into the lower region, where the characteristic inverted flame is generated in the combustion chamber, generating combustion products which strike surfaces which are assigned appropriately to the transmission of heat to the fluid contained in the interspace of the wall, and are then sent to the stack.
  • the aim of the present invention is to provide a boiler of the type described above which is capable of burning solid fuels constituted equally by small wood logs or by granular biomasses of any size.
  • a solid fuel boiler comprising a wall provided with an interspace for containing a fluid to be heated, which is adapted to delimit a portion of space which comprises a burner provided with a grille which divides said portion of space into an upper region, which is designed to contain the fuel, and a lower region, which comprises a combustion chamber and heat exchange surfaces which are designed to be struck by the products of combustion before conveyance to the stack, characterized by the presence of a protection shield located directly above the grille of the burner at a suitable distance therefrom.
  • the reference numeral 1 generally designates the boiler provided with an outer casing 2 and comprising a wall 3 provided with an interspace 4 which contains the water to be heated.
  • the portion of space delimited by the wall 3 comprises a burner 5, which comprises a cast iron grille 6 which rests on a block of refractory material 7, and the burner divides the portion of space into two regions: an upper region 8, which is designed to contain the fuel, and a lower region, which comprises a combustion chamber 9, in which the inverted flame visible in Figures 3 and 4 is generated, the flame being obtained from the mixture produced by the gasification of the fuel combined with the primary oxidizing air and with the addition of secondary air through ducts 6a; the products of combustion then strike, before being sent to the stack, heat exchange surfaces 10, thus transmitting heat to the water to be heated.
  • a burner 5 which comprises a cast iron grille 6 which rests on a block of refractory material 7, and the burner divides the portion of space into two regions: an upper region 8, which is designed to contain the fuel, and a lower region, which comprises a combustion chamber 9, in which the inverted flame visible in Figures 3 and 4 is generated, the flame being obtained from the mixture produced by the gasification of
  • the upper region 8 is provided both with a door 11 for loading the fuel in the form of small wood logs and with a tube 12 for feeding fuel in the form of granular biomasses with an underlying igniter constituted by a glow bar 13, and moreover in that there is a protection shield 14 directly above the grille 6 of the burner and suitably spaced therefrom, in order to allow the passage of the fuel mix, by means of feet 15.
  • the access of the fuel to the combustion region is optimized by the presence of a hopper 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Solid-Fuel Combustion (AREA)
EP08152357A 2007-03-14 2008-03-06 Chaudière à combustible solide Withdrawn EP1970623A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMN20070006 ITMN20070006A1 (it) 2007-03-14 2007-03-14 Caldaia per combustibile solido

Publications (2)

Publication Number Publication Date
EP1970623A2 true EP1970623A2 (fr) 2008-09-17
EP1970623A3 EP1970623A3 (fr) 2009-01-07

Family

ID=39473397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08152357A Withdrawn EP1970623A3 (fr) 2007-03-14 2008-03-06 Chaudière à combustible solide

Country Status (2)

Country Link
EP (1) EP1970623A3 (fr)
IT (1) ITMN20070006A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITLE20130017A1 (it) * 2013-12-30 2015-06-30 Giovanni Pellegrino Bruciatore pirolitico a depressione
IT201700018014A1 (it) * 2017-02-17 2018-08-17 Ar Ca S R L Caldaia per la combustione di biomasse granulari.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084852A3 (fr) * 1982-01-26 1983-09-14 UNICAL S.p.A. Chaudière en acier à combustible solide pour chauffage domestique
DE3563380D1 (en) * 1984-03-16 1988-07-21 Unical Spa Burner for a solid fuel-fired steel construction boiler
IT1181346B (it) * 1984-03-16 1987-09-23 Unical Spa Bruciatore perfezionato per caldaia in acciaio a combustibile solido
US5617841A (en) * 1991-08-14 1997-04-08 Pyro Industries, Inc. Grate with self ignitor for burning pellet fuel
EP1387984A1 (fr) * 2001-04-11 2004-02-11 Danergi A/S Procede permettant de bruler des combustibles solides dans un bruleur et dispositif permettant de mettre en oeuvre ce procede

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITLE20130017A1 (it) * 2013-12-30 2015-06-30 Giovanni Pellegrino Bruciatore pirolitico a depressione
IT201700018014A1 (it) * 2017-02-17 2018-08-17 Ar Ca S R L Caldaia per la combustione di biomasse granulari.

Also Published As

Publication number Publication date
ITMN20070006A1 (it) 2008-09-15
EP1970623A3 (fr) 2009-01-07

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