EP4556793A1 - Mit festen brennstoffen betriebener wärmeerzeuger - Google Patents

Mit festen brennstoffen betriebener wärmeerzeuger Download PDF

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Publication number
EP4556793A1
EP4556793A1 EP24208911.8A EP24208911A EP4556793A1 EP 4556793 A1 EP4556793 A1 EP 4556793A1 EP 24208911 A EP24208911 A EP 24208911A EP 4556793 A1 EP4556793 A1 EP 4556793A1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
solid fuel
heat generator
conveyor
solid
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.)
Granted
Application number
EP24208911.8A
Other languages
English (en)
French (fr)
Other versions
EP4556793B1 (de
EP4556793C0 (de
Inventor
Nicola Micheletti
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.)
Unical AG SpA
Original Assignee
Unical AG SpA
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 Unical AG SpA filed Critical Unical AG SpA
Publication of EP4556793A1 publication Critical patent/EP4556793A1/de
Application granted granted Critical
Publication of EP4556793B1 publication Critical patent/EP4556793B1/de
Publication of EP4556793C0 publication Critical patent/EP4556793C0/de
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Anticipated expiration legal-status Critical

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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
    • F23B10/00—Combustion apparatus characterised by the combination of two or more combustion chambers
    • F23B10/02—Combustion apparatus characterised by the combination of two or more combustion chambers including separate secondary combustion chambers
    • 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
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B60/00—Combustion apparatus in which the fuel burns essentially without moving
    • F23B60/02—Combustion apparatus in which the fuel burns essentially without moving with combustion air supplied through a grate

Definitions

  • the present invention relates to a heat generator fueled by solid fuels, in particular fueled or capable of being fueled by two different fuels, for example wood and pellets.
  • Heat generators are known on the market which can be fueled both by wood and by pellets.
  • such generators have a combustion chamber which is accessible from outside by means of an access hatch that can be opened and closed by the user, into which the wood is placed manually.
  • a containment vessel for the pellets is also provided, which is connected, by conveyance means, to the combustion chamber, so as to allow the pellets to be fed to the combustion chamber.
  • a temporary storage vessel for the pellets is provided, into which the pellets are fed from the main vessel, normally by gravity or by way of a screw feeder.
  • the ash produced during the operation of the generator can foul not only the bottom of the combustion chamber, but also the conveyor, or the bottom of the brazier, so compromising its operation.
  • combustion chamber for wood and pellets means it is not possible to optimally manage sending and extracting air to and from the combustion chamber.
  • the aim of the present invention is to provide a heat generator fueled by solid fuels which is capable of improving the known art in one or more of the above-mentioned aspects.
  • an object of the invention is to provide a heat generator fueled by solid fuels that is capable of enabling optimization of the quality of combustion both of pellets and of wood.
  • Another object of the invention is to provide a heat generator fueled by solid fuels that is highly reliable, easy to implement and at low cost.
  • the heat generator fueled by solid fuels according to the invention comprises a support and containment structure 2 which defines a first combustion chamber 3 for a first solid fuel 10.
  • the first combustion chamber 3 is associated with at least one access hatch 3a for loading the first solid fuel 10.
  • At least one second combustion chamber 4 is provided for a second solid fuel 11 of a different type from the first solid fuel 10.
  • the first solid fuel 10 is constituted by wood, while the second solid fuel 11 comprises pellets.
  • At least one separation wall 5 is defined which has at least one passage opening 20.
  • the second combustion chamber 4 is defined, laterally, by a lateral containment surface 4a.
  • At least one inlet 4b is provided at the lateral containment surface 4a which is connected to at least one conveyor 6 for the automatic feeding of the second solid fuel 11 to the at least one second combustion chamber 4.
  • the at least one passage opening 20 is designed to allow the passage, from the second combustion chamber 4 toward the first combustion chamber 3, of heat and air during the combustion of the second solid fuel 11, and the ash from the first combustion chamber 3 toward the second combustion chamber 4 during the combustion of the first solid fuel 10.
  • the heat generator 1 comprises means for supplying air 30 to the second combustion chamber 4.
  • Means for extracting exhaust gases 40 from the first combustion chamber 3 are also provided.
  • the means for supplying air 30 and the means for extracting exhaust gases 40 comprise means for the forced circulation of an air flow between an air extraction conduit, which leads into the second combustion chamber 4, and a flue for extracting the fumes from the first combustion chamber 3.
  • the means for forced circulation are functionally associated with an actuation and control device, which is configured to drive the means for forced circulation.
  • the heat generator 1 comprises interface means configured for the selective selection of the type of solid fuel 10, 11 to use.
  • the interface means are functionally connected to a control and actuation unit, which defines the actuation and control device, which is adapted to act, not only on the means for supplying air 30 and on the means for extracting exhaust gases 40, but also on the conveyor 6.
  • the support and containment structure 2 defines a storage vessel 7 for the second solid fuel 11.
  • the conveyor 6 is adapted to feed, on command, the second solid fuel 11 from the storage vessel 7 toward the second combustion chamber 4.
  • the first solid fuel 10 is fed manually to the first combustion chamber 3 through the at least one access hatch 3a.
  • the heat generator 1 comprises a stove.
  • the conveyor 6 comprises a screw feeder 6a.
  • the operation of the heat generator 1, according to the invention, is the following.
  • the operation of the stove is set up depending on the type of solid fuel that it is intended to use.
  • the stove If the stove is to be fueled with pellets, then it will function like a traditional stove fueled with pellets, automatically feeding the second solid fuel 11 (the pellets) to the second combustion chamber 4.

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)
  • Solid-Fuel Combustion (AREA)
EP24208911.8A 2023-11-15 2024-10-25 Mit festen brennstoffen betriebener wärmeerzeuger Active EP4556793B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202300024156 2023-11-15

Publications (3)

Publication Number Publication Date
EP4556793A1 true EP4556793A1 (de) 2025-05-21
EP4556793B1 EP4556793B1 (de) 2026-06-17
EP4556793C0 EP4556793C0 (de) 2026-06-17

Family

ID=89898006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24208911.8A Active EP4556793B1 (de) 2023-11-15 2024-10-25 Mit festen brennstoffen betriebener wärmeerzeuger

Country Status (1)

Country Link
EP (1) EP4556793B1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1559957A1 (de) * 2004-01-28 2005-08-03 Thermorossi S.P.A. Ofenbrenner zur Verbrennung von Pellets, Holzspänen, Getreiden und Pflanzenabfälle im allgemeinen
US11079115B1 (en) * 2020-12-31 2021-08-03 Independence Stove Company LLC Non-electric gravity feed pellet stove
JP2022081723A (ja) * 2020-11-20 2022-06-01 株式会社サンライズエンジニアリング 自然燃焼ストーブ、その使用方法、およびペレットボックス

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1559957A1 (de) * 2004-01-28 2005-08-03 Thermorossi S.P.A. Ofenbrenner zur Verbrennung von Pellets, Holzspänen, Getreiden und Pflanzenabfälle im allgemeinen
JP2022081723A (ja) * 2020-11-20 2022-06-01 株式会社サンライズエンジニアリング 自然燃焼ストーブ、その使用方法、およびペレットボックス
US11079115B1 (en) * 2020-12-31 2021-08-03 Independence Stove Company LLC Non-electric gravity feed pellet stove

Also Published As

Publication number Publication date
EP4556793B1 (de) 2026-06-17
EP4556793C0 (de) 2026-06-17

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