EP2629012A1 - Pelletofen mit Brennerschalenselbstreinigungssystem - Google Patents

Pelletofen mit Brennerschalenselbstreinigungssystem Download PDF

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Publication number
EP2629012A1
EP2629012A1 EP13155544.3A EP13155544A EP2629012A1 EP 2629012 A1 EP2629012 A1 EP 2629012A1 EP 13155544 A EP13155544 A EP 13155544A EP 2629012 A1 EP2629012 A1 EP 2629012A1
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EP
European Patent Office
Prior art keywords
pipe
brazier
pellet stove
air
cleaning
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
EP13155544.3A
Other languages
English (en)
French (fr)
Other versions
EP2629012B1 (de
Inventor
Roberto Scimone
Andrea Salamone
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Individual
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Individual
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Publication date
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Publication of EP2629012A1 publication Critical patent/EP2629012A1/de
Application granted granted Critical
Publication of EP2629012B1 publication Critical patent/EP2629012B1/de
Not-in-force legal-status Critical Current
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
    • F23B30/00—Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber
    • F23B30/02—Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber with movable, e.g. vibratable, fuel-supporting surfaces; with fuel-supporting surfaces that have movable parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H9/00—Revolving-grates; Rocking or shaking grates
    • F23H9/02—Revolving cylindrical grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/185—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion
    • F24B1/189—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by air-handling means, i.e. of combustion-air, heated-air, or flue-gases, e.g. draught control dampers 
    • F24B1/19—Supplying combustion-air
    • F24B1/1902—Supplying combustion-air in combination with provisions for heating air only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/191—Component parts; Accessories
    • F24B1/1915—Means for removing ash
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/191—Component parts; Accessories
    • F24B1/193—Grates; Irons
    • 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
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
    • F24H3/08—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
    • F24H3/088—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes using solid fuel

Definitions

  • the object of the invention is a pellet stove provided with a system for self-cleaning of the brazier and of feeding of combustion air to the same.
  • a pellet stove of the prior art illustrated in the accompanying Figure 1 , comprises a case 10, with a substantially parallelepiped shape, in whose upper part a hopper 11 is placed wherein the pellet 12 is loaded, which by means of a worm conveyor 13 is conducted to a drop pipe 14 which feeds it to a brazier 15 where combustion takes place.
  • the brazier 15 is mounted on a support 16, and has holes 17 for the passage of the combustion air which is aspirated from the outside by the pressure drop created by a flue gas extraction fan 18, as illustrated by the arrows. More particularly the fresh air from the environment indicated by the arrows with reference numeral 19, entering through an opening 20 and a conduit 21, is drawn into the brazier 15 through the holes 17, while the hot combusted gases, denoted by the arrows with reference numeral 22, are aspirated and expelled by the fan 18.
  • a further fan 25 feeds ambient air represented by the arrows denoted by reference numeral 26, which heats by passing through an exchanger 27 where it takes heat from the hot flue gas produced by the combustion and is fed back hot into the environment, as represented by the arrows 28.
  • Figure 1 also shows schematically a resistor, referred to in jargon as plug, which generates the heat necessary for igniting the pellets in the brazier 15.
  • a constructionally complex burner apparatus or device which, in one embodiment, comprises a brazier below which a component is placed which can rotate with respect to a horizontal rotation axis suitable for collecting and holding the combustion products in order to convey them, by means of a rotation, in the direction of an underlying ashes collection box, with said brazier which comprises, moreover, elements of retaining of the ash provided with springs and hinged on the base of the brazier at the rotatable component and a fuel retaining slide placed above the openable base of the brazier and of the rotatable component and such as to be able to be moved inside and outside of the brazier in order to retain the burning fuel or allow the drop thereof in the direction of the rotatable component.
  • the object of the invention is that of eliminating the aforementioned disadvantages of the prior art.
  • More particularly one object of the invention is that of providing a system of self-cleaning of the brazier of a pellet stove which allows a perfect disincrustation of the holes of feeding of the combustion air.
  • Another object of the present invention is that of providing such a self-cleaning system which allows at the same time the feeding of the combustion air into the brazier.
  • Yet another object of the invention is that of providing such a system which is simple and economical to manufacture.
  • the pellet stove according to the invention has, on the base of the brazier, a pipe mounted between the walls of the case of the stove so as to be able to rotate around its axis and having at least one end, preferably both ends, open for the entry of ambient air, and a plurality of holes at its section placed at the brazier.
  • This perforated pipe constitutes in practice the base wall of the brazier and has its shell a short distance from two opposite longitudinal walls placed as a funnel of the brazier.
  • the aforementioned perforated pipe acts both as feed of the comburent air to the brazier and as cleaner element for the elimination of the ashes and the removal of possible incrustations.
  • the ashes and possible incrustations which may have formed around the holes of entry of the air are evacuated through the gap between the shell of the pipe and one of said longitudinal walls of the brazier.
  • the pipe preferably has at least one longitudinal baffle, preferably at least two, in such a way as to divide its span into several longitudinal sectors and block the openings of entry of the air in the lower half, in such a way as to limit to a minimum the possible escape of air through holes of the pipe not placed inside the brazier, for whatever angular position of the same pipe.
  • the pipe being totally inside the stove body, it allows a preheating of the air, and therefore a better yield of the combustion.
  • a pipe 50 is positioned, supported in such a way as to be able to rotate around its axis from the sides 51 of the case 10 of the stove, by means of bushings or bearings 52, in order to reduce the friction during the rotation to a minimum.
  • the pipe 50 can be made to rotate by means of a motor, not shown, which controls a chain 53 meshing a pinion 54 mounted at one end of the pipe.
  • At least one end of the pipe 50, and preferably both the ends 55, are open to allow the entry of air from the environment as indicated by the arrows 19.
  • baffles are preferably placed in the pipe 50, in the example shown four baffles 56 placed in a cross in order to channel the flow of air 19. Naturally the number of baffles can be higher or lower than four.
  • Respective fixed shutters 57 are placed at the ends 55 of the pipe 50 (see also Fig. 5 ) which, together with the baffles or partitions 56 inside the pipe, allow the air to be conveyed only in the upper zone of the pipe.
  • the pipe 50 is placed in such a way as to constitute in practice the base wall of the brazier 15, and therefore constitute an integral part of the same.
  • the brazier or crate 15 for containing the pellets has a substantially overturned truncated pyramid shape, with two opposite walls 60 which extend longitudinally along the axis of the pipe 50 and converge as a funnel on the shell of the pipe, leaving a small gap 61 between their ends and the shell of the pipe 50.
  • the section of the pipe 50 below the brazier 15 has a plurality of holes 62 on the entire section, to allow the entry of air in the brazier 15.
  • the pipe 50 feeds the combustion air to the pellet 12 in the brazier 15, air which is aspirated through the holes 62 by the pressure drop created by the flue gas extraction fan 18. Since the pipe 50 constitutes an integral part of the brazier 15, and is therefore at high temperature at least in the zone of the support 16 of the brazier, the air 19 undergoes a preheating before coming into contact with the pellets 12 in the brazier 15, thus improving the heat yield of the stove and reducing the production of carbon dioxide.
  • the pipe 50 When it is necessary to perform the cleaning, the pipe 50 is rotated, as indicated by the arrow in Fig. 3 , thus making the ashes 30 fall into the collection box 29, through the gap 61 between a wall 60 of the brazier and the shell of the pipe 50.
  • a control unit (not shown) is provided, with a user interface through which it is possible to set the cyclical cleaning times, on the basis of the thermal power of the stove, for example a slow rotation of the pipe 50 (1-10 rpm) lasting 10-60 seconds every 3-8 minutes can be provided. When the stove is extinguished a longer rotation is provided, for example of 3-12 minutes.

Landscapes

  • 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)
  • Cleaning By Liquid Or Steam (AREA)
EP13155544.3A 2012-02-20 2013-02-15 Pelletofen mit Brennerschalenselbstreinigungssystem Not-in-force EP2629012B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000251A ITMI20120251A1 (it) 2012-02-20 2012-02-20 Stufa a pellet con sistema autopulente del braciere

Publications (2)

Publication Number Publication Date
EP2629012A1 true EP2629012A1 (de) 2013-08-21
EP2629012B1 EP2629012B1 (de) 2019-01-02

Family

ID=45998592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13155544.3A Not-in-force EP2629012B1 (de) 2012-02-20 2013-02-15 Pelletofen mit Brennerschalenselbstreinigungssystem

Country Status (2)

Country Link
EP (1) EP2629012B1 (de)
IT (1) ITMI20120251A1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104251498A (zh) * 2014-10-15 2014-12-31 郝迪生 柴炭两用横排炉换热供暖系统
WO2016014004A1 (en) * 2014-07-23 2016-01-28 Kahyaoğlu Maki̇na Tarim Madenci̇li̇k İnşaat Mühendi̇sli̇k Taahhüt Sanayi̇ Ve Ti̇caret Li̇mi̇ted Şi̇rketi̇ A continuous granular fuel burner
KR20160027642A (ko) * 2014-09-02 2016-03-10 이강옥 펠릿을 연소연료로 사용하는 난방장치
CN106439787A (zh) * 2016-08-25 2017-02-22 鞍山嘉晟生物质科技发展有限公司 一种旋转炉盘
DE202018001770U1 (de) 2018-04-09 2018-05-09 Enno Wagner Heizgerät
EP3693663A1 (de) * 2019-02-11 2020-08-12 Haas + Sohn Ofentechnik GmbH Pelletbrenner
WO2021229425A1 (de) 2020-05-11 2021-11-18 Werner, Martin Holzgaskessel
IT202200003026A1 (it) * 2022-02-18 2023-08-18 Unical Ag Spa Bruciatore autopulente per combustibili solidi.
IT202200003668A1 (it) * 2022-02-28 2023-08-28 Amg S P A Corpo stufa perfezionato e stufa a pellet che utilizza il sudetto corpo stufa

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191419511A (en) * 1913-09-20 1915-07-29 Carl Knut Edvard Bildt Improvements in Steam Boilers, such as Locomotive Boilers and the like.
DE1106910B (de) * 1957-07-02 1961-05-18 Schiff & Stern Ges M B H Feuerung mit Walzenrost fuer feste Brennstoffe mit kontinuierlicher Brennstoffzufuhr
GB2056033A (en) * 1979-08-08 1981-03-11 Weiss Geb Kg Furnace for solid fuels
EP0482306A2 (de) * 1990-10-20 1992-04-29 Hoval Interliz Ag Verfahren und Vorrichtung zum Verfeuern von Holzschnitzeln und Holzspänen unter Bildung schadstoffarmer Abgase bei gleitend regelbarer Feuerungsleistung
US20070215021A1 (en) 2003-04-09 2007-09-20 Even Temp, Inc. Apparatus and method for combustion
WO2011131039A1 (zh) * 2010-04-23 2011-10-27 Li Shiqing 一种风冷旋转炉条

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070209562A1 (en) * 2006-03-07 2007-09-13 L/Mfg/E, Inc. Burner for furnace

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191419511A (en) * 1913-09-20 1915-07-29 Carl Knut Edvard Bildt Improvements in Steam Boilers, such as Locomotive Boilers and the like.
DE1106910B (de) * 1957-07-02 1961-05-18 Schiff & Stern Ges M B H Feuerung mit Walzenrost fuer feste Brennstoffe mit kontinuierlicher Brennstoffzufuhr
GB2056033A (en) * 1979-08-08 1981-03-11 Weiss Geb Kg Furnace for solid fuels
EP0482306A2 (de) * 1990-10-20 1992-04-29 Hoval Interliz Ag Verfahren und Vorrichtung zum Verfeuern von Holzschnitzeln und Holzspänen unter Bildung schadstoffarmer Abgase bei gleitend regelbarer Feuerungsleistung
US20070215021A1 (en) 2003-04-09 2007-09-20 Even Temp, Inc. Apparatus and method for combustion
WO2011131039A1 (zh) * 2010-04-23 2011-10-27 Li Shiqing 一种风冷旋转炉条

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016014004A1 (en) * 2014-07-23 2016-01-28 Kahyaoğlu Maki̇na Tarim Madenci̇li̇k İnşaat Mühendi̇sli̇k Taahhüt Sanayi̇ Ve Ti̇caret Li̇mi̇ted Şi̇rketi̇ A continuous granular fuel burner
KR20160027642A (ko) * 2014-09-02 2016-03-10 이강옥 펠릿을 연소연료로 사용하는 난방장치
CN104251498A (zh) * 2014-10-15 2014-12-31 郝迪生 柴炭两用横排炉换热供暖系统
CN106439787A (zh) * 2016-08-25 2017-02-22 鞍山嘉晟生物质科技发展有限公司 一种旋转炉盘
DE202018001770U1 (de) 2018-04-09 2018-05-09 Enno Wagner Heizgerät
EP3693663A1 (de) * 2019-02-11 2020-08-12 Haas + Sohn Ofentechnik GmbH Pelletbrenner
WO2021229425A1 (de) 2020-05-11 2021-11-18 Werner, Martin Holzgaskessel
IT202200003026A1 (it) * 2022-02-18 2023-08-18 Unical Ag Spa Bruciatore autopulente per combustibili solidi.
IT202200003668A1 (it) * 2022-02-28 2023-08-28 Amg S P A Corpo stufa perfezionato e stufa a pellet che utilizza il sudetto corpo stufa

Also Published As

Publication number Publication date
ITMI20120251A1 (it) 2013-08-21
EP2629012B1 (de) 2019-01-02

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