EP1260764A1 - Dispositif et procédé pour éliminer les impuretés, les cendres ou similaires d' un brasier pour appareils de chauffage - Google Patents

Dispositif et procédé pour éliminer les impuretés, les cendres ou similaires d' un brasier pour appareils de chauffage Download PDF

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Publication number
EP1260764A1
EP1260764A1 EP02011338A EP02011338A EP1260764A1 EP 1260764 A1 EP1260764 A1 EP 1260764A1 EP 02011338 A EP02011338 A EP 02011338A EP 02011338 A EP02011338 A EP 02011338A EP 1260764 A1 EP1260764 A1 EP 1260764A1
Authority
EP
European Patent Office
Prior art keywords
base wall
brazier
agitator
ash
control center
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
EP02011338A
Other languages
German (de)
English (en)
Other versions
EP1260764B1 (fr
Inventor
Sergio Perin
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.)
PALAZZETTI LELIO SpA
Original Assignee
PALAZZETTI LELIO 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 PALAZZETTI LELIO SpA filed Critical PALAZZETTI LELIO SpA
Publication of EP1260764A1 publication Critical patent/EP1260764A1/fr
Application granted granted Critical
Publication of EP1260764B1 publication Critical patent/EP1260764B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • 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
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00—Removing ash, clinker, or slag from combustion chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/022—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using electronic means
    • 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
    • F24B1/02—Closed stoves
    • F24B1/024—Closed stoves for pulverulent fuels
    • 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
    • F24B1/02—Closed stoves
    • F24B1/028—Closed stoves with means for regulating combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H2700/00—Grates characterised by special features or applications
    • F23H2700/006—Grates of basket-type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements

Definitions

  • the invention concerns a device and a method to remove impurities, ash or similar from a brazier for heaters, wherein this brazier is arranged between an upper combustion chamber and a lower intake chamber.
  • This brazier functions as a container for the fuel of the heater, for example in pellet form, that is, substantially cylindrical wood-based particles, or chips, bio-masses, wood logs or other suitable fuel.
  • this brazier has a plurality of apertures able to allow the air to pass which triggers and feeds combustion.
  • the brazier has agitator means associated with at least part of said base wall and able to shake and selectively remove the impurities, such as for example ash, soot or similar, which are deposited and accumulate on the bottom of the brazier as combustion proceeds.
  • impurities such as for example ash, soot or similar
  • the present invention is characterized in that said agitator means are associated with at least a motorized actuator with a selective drive governed automatically by the detection of at least an operating condition detected inside the heater during the functioning thereof.
  • a brazier is arranged to contain the fuel, for example consisting of pellets, chips, bio-masses, wood logs or other suitable fuel.
  • This brazier is usually concave in shape and comprises at least a substantially vertical or sub-vertical lateral wall and a base wall. On the walls of the brazier there is a plurality of apertures able to permit the passage of air which triggers and feeds the combustion of the fuel located inside the brazier.
  • the apertures on the vertical walls also have the function of allowing a part of the comburent air to affect an intermediate zone of the flame and to contribute to the combustion process of the unburnt noxious gases.
  • the heater progressively loses functionality and obliges the user, in the long term, to switch off the heater in order to clean the brazier carefully.
  • Document DE-C-17109 discloses a heater with a grid for the fuel having a plurality of holes on the bottom. Under the grid there is a plate which has a plurality of pins on its upper surface; there are as many pins as there are holes in the grid, and they are in the same position thereas. This plate can be raised manually by means of a lever, taking the relative pins through the holes of the grid to break and distribute the coal and slag which are above the grid, and to allow the ash to fall through apertures which are at the side of these pins.
  • Document DE-C-24023 describes a heater with a grid for the fuel where the grid is cleaned by means of using a revolving cross equipped with teeth which, by activating a lever, are inserted between the rings of the grid with an oscillating movement.
  • JP-A-56149511 provides a motor able to act on a kinematism which causes an alternate movement on a horizontal plane of the grid which supports the fuel; this document does not provide to use auxiliary agitator means associated with the base of the grid.
  • One purpose of the invention is to achieve a device applicable to a brazier for heaters, for example of the type using pellets, chips, bio-masses or other type of suitable fuel, which will allow to automatically overcome the disadvantage of the formation of thick layers of impurities and ash which partly occlude the apertures through which the air passes.
  • the brazier for heaters comprises at least a base wall, on which a plurality of through apertures are made able to allow the air to pass.
  • automatically driven agitator means are provided in cooperation with at least part of said base wall to agitate and selectively remove the impurities, due to combustion, which are deposited and accumulate on said base wall and partly occlude the relative through apertures.
  • said agitator means are associated with motorized drive means which, in one embodiment, are governed by the command of timer means, programmed to selectively carry out cycles to agitate and remove the impurities on the bottom of the brazier.
  • the device comprises at least a control unit able to receive information concerning at least one parameter of the real functioning of the heater; this information is found by at least a detector means which sends the data detected to the control unit for the selective command of the motorized drive means.
  • said motorized drive means are governed by means to detect the flow rate of the air passing through the brazier.
  • the motorized drive means are governed by means to detect the concentrations of gases produced by combustion.
  • said motorized drive means are governed by means, for example optical sensors and/or level sensors, to detect the quantity of ash or impurities on the bottom of the brazier.
  • the motorized drive means can consist of any type of actuator, for example pneumatic, hydraulic, oil-dynamic, or otherwise.
  • the agitator means consist of movable elements which partly constitute said base wall; said movable elements are able to be selectively moved, for example simultaneously and with an alternating movement, on a plane substantially parallel to the plane defined by said base wall.
  • the agitator means comprise plate means arranged below the base wall of the brazier and on which pin elements are fixed, facing upwards and able to be inserted alternately in the through apertures present in the base wall.
  • the base wall is made as a separate body from the lateral wall and can be made to move alternately in order to remove the impurities and free the through apertures.
  • the brazier according to the invention therefore, does not oblige the user to switch off the heater in order to clean it, or to increase the quantity of air introduced, since the selective and automatic drive of said agitator means, functionally connected to the real operating conditions of the heater itself, allows to selectively and automatically remove the impurities which have accumulated on the bottom, thus ensuring an efficient and constant passage of air for combustion.
  • the device 100 to remove impurities, ash or similar is applied to a brazier 10 for heaters, for example of the type using pellets, of a conventional type and not shown in the drawings, which has a substantially parallelepiped shape defined by a base wall 15 and four erect walls, respectively lateral 11, 12 and front 13, 14.
  • a plurality of apertures 17 are made on the base wall 15 and, during use, are able to allow comburent air to pass, to trigger and feed combustion.
  • the base wall 15 is conformed as a grid with elements parallel to the front elements 13, 14, and consists of a plurality of fixed elements 25, each alternating with movable elements 21 which are connected, at one end, to a cross-piece 22.
  • Said movable elements 21, in this embodiment, constitute the agitator means 20 of the base wall 15.
  • These movable elements 21 partly define said base wall 15 and intersect it longitudinally in the spaces defined between said fixed elements 25. Said movable elements 21 are able to be moved in alternation, in this case, by means of a motorized linear actuator 23, the rod 23a of which is fixed to the cross-piece 22.
  • the air passing from below the brazier 10 can keep up a substantially constant flow and, consequently, the flame can maintain a substantially constant intensity.
  • the motorized actuator 23 is selectively driven by a user by means of external command means, for example a button or switch of any type.
  • the actuator is governed by the command of a timer 24 by means of which a user can set desired periodic cycles to drive said movable elements 21.
  • the timer 24, which can be commanded by the control center 28 which manages the functioning of the entire heater where the brazier 10 is located, or by an autonomous command unit, is advantageously of the programmable type, so as to permit a desired regulation of the frequency and intervals at which said movable elements 21 are driven, according to the methods of functioning of the heater.
  • the motorized actuator 23 is governed in feedback according to the detection of one or more signals indicative of the real functioning of the heater which allow to obtain information regarding the formation of a thicker or thinner layer of ash and soot on the base wall 15.
  • said signals indicate the flow rate of the air passing through said brazier 10.
  • the device 100 comprises a flow rate sensor 29, arranged downstream of the brazier 110 and able to detect the flow rate of air passing through the brazier 110, and to transmit to the control center 28 a signal relating to said detection.
  • the control center 28 commands the actuator 23 to be driven, for a time which can be programmed by the timer 24, to remove the impurities from said apertures 17 and thus restore correct conditions for the passage of air.
  • said signals indicate the concentration of the gases produced by combustion; in this case, in a substantially identical manner to the previous embodiment, the device 100 comprises a sensor 30 able to detect the concentration of combustion gases produced downstream of the brazier 10 and to send the relative information to the control center 28. Based on the analysis of said gases, said center 28 is able to recognize the presence of an anomalous functioning condition caused by an at least partial blockage of the apertures 17 of the brazier 10 and consequently to activate the motorized actuator 23 to remove the impurities from the bottom of the brazier 10.
  • said signals indicate the quantity of ash or soot 31 which has been deposited on the base wall 15.
  • the device 100 comprises a sensor 32, for example of the optical type, level type or other suitable type, able to detect the level reached by the layer of ash 31 which accumulates on the bottom of the brazier 10 and to send the relative signal to the control center 28 which, when a maximum threshold level has been reached, commands the actuator 23 to be driven to remove the ash and to free the apertures 17 from blockage.
  • a brazier 110 substantially identical in shape to that shown in Fig. 1, has a base wall 15 on which apertures 17 are made, in this case substantially circular, for the passage of comburent air.
  • the agitator means 20 comprise, in this case, a plate 26, arranged below the base wall 15, on which pins 27 are mounted facing upwards in spatial correspondence with said apertures 17.
  • the plate 26 is able to be selectively and alternately taken from a first lowered position wherein it does not interfere with said base wall 15, to a raised position wherein the pins 27 are taken inside the relative apertures 17.
  • the alternate movement of the plate 26 is achieved by a linear actuator 23, which is associated with a timer 24 which, as in the embodiment described above, defines the timing of the drive.
  • the introduction of the pins 27 into the relative apertures 17 causes the thick layer of ash and soot which has formed during combustion on the base wall 15 to be agitated and broken, thus obtaining the desired result.
  • the brazier 210 is substantially cylindrical in shape and comprises a base wall 15 mounted rotatory with respect to an erect lateral wall 11; the base wall 15 and the lateral wall 11 are in this case made as two separate bodies. In this case too, at least the base wall 15 has apertures 17 able to allow the comburent air to pass.
  • the base wall 15 can be made to rotate, selectively and alternately, around a median axis "X", for example by means of an electric motor, a circular actuator, or other means which are not shown in the Figures, to remove the impurities deposited thereon.
  • scraper means for example fixed to the lateral wall 11, to increase the capacity to agitate and remove the impurities which have deposited and accumulated on the base wall 15.

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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)
  • Gasification And Melting Of Waste (AREA)
  • Resistance Heating (AREA)
  • Incineration Of Waste (AREA)
  • Processing Of Solid Wastes (AREA)
EP02011338A 2001-05-25 2002-05-23 Dispositif et procédé pour éliminer les impuretés, les cendres ou similaires d' un brasier pour appareils de chauffage Expired - Lifetime EP1260764B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001UD000096A ITUD20010096A1 (it) 2001-05-25 2001-05-25 Braciere per stufa
ITUD20010096 2001-05-25

Publications (2)

Publication Number Publication Date
EP1260764A1 true EP1260764A1 (fr) 2002-11-27
EP1260764B1 EP1260764B1 (fr) 2006-07-26

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EP02011338A Expired - Lifetime EP1260764B1 (fr) 2001-05-25 2002-05-23 Dispositif et procédé pour éliminer les impuretés, les cendres ou similaires d' un brasier pour appareils de chauffage

Country Status (4)

Country Link
EP (1) EP1260764B1 (fr)
AT (1) ATE334344T1 (fr)
DE (1) DE60213321D1 (fr)
IT (1) ITUD20010096A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2891895A3 (fr) * 2005-10-06 2007-04-13 Georges Carret Appareil de chauffage du type chaudiere alimente en produits combustibles solides
AT503043B1 (de) * 2006-04-26 2007-07-15 Haslmayr Johann Dipl Ing Kipprost für biomassekessel
DE102010015626A1 (de) * 2010-04-19 2011-10-20 Clyde Bergemann Drycon Gmbh Vorrichtung und Verfahren zur Reinigung einer Vorrichtung zum Fördern von Verbrennungsrückständen
EP2573462A1 (fr) 2011-09-22 2013-03-27 S.A.R.L. Ceven Installation de chauffage à combustible solide du type à éléments individualisés
IT201700012189A1 (it) * 2017-02-03 2018-08-03 Costruzioni Mecc Paterno S R L Braciere
IT201800002664A1 (it) * 2018-02-14 2019-08-14 Edilkamin S P A Stufa a combustibile solido.
EP2400217B1 (fr) * 2010-06-22 2020-08-19 Alley Enterprises Unlimited Company Brûleur fermé pour brûler du combustible granulaire

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101210682B (zh) * 2006-12-29 2010-05-19 游钧杰 燃烧炉灰烬处理装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE17109C (de) O. ELTERICH in Nürnberg Transportabler Füll - Regulir-Mantelofen
DE24023C (de) A. H. WESSELY in Hamburg Neuerungen an Einsätzen für Kachel- und eiserne Unteröfen
GB827268A (en) * 1957-03-11 1960-02-03 Vorkauf Heinrich Improvements in control devices for slag clearing members in shaft furnaces
JPS5387582A (en) * 1977-01-11 1978-08-02 Kawasaki Heavy Ind Ltd Apparatus for driving rotary fire-grates
JPS56149511A (en) 1980-04-22 1981-11-19 Toshiba Electric Appliance Co Ltd Apparatus for feeding solid fuel and ejecting ash
US4313387A (en) * 1980-02-25 1982-02-02 Hokkai Danro Yugen Kaisha Method and apparatus for controlling a solid fuel burning furnace
GB2178523A (en) * 1983-08-27 1987-02-11 Aarrow Dynamics Limited Fire grates
EP0915289A2 (fr) * 1997-11-04 1999-05-12 Pyro Industries, Inc. Brûleur à boulets pour systèmes de chauffage ou de séchage

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE17109C (de) O. ELTERICH in Nürnberg Transportabler Füll - Regulir-Mantelofen
DE24023C (de) A. H. WESSELY in Hamburg Neuerungen an Einsätzen für Kachel- und eiserne Unteröfen
GB827268A (en) * 1957-03-11 1960-02-03 Vorkauf Heinrich Improvements in control devices for slag clearing members in shaft furnaces
JPS5387582A (en) * 1977-01-11 1978-08-02 Kawasaki Heavy Ind Ltd Apparatus for driving rotary fire-grates
US4313387A (en) * 1980-02-25 1982-02-02 Hokkai Danro Yugen Kaisha Method and apparatus for controlling a solid fuel burning furnace
JPS56149511A (en) 1980-04-22 1981-11-19 Toshiba Electric Appliance Co Ltd Apparatus for feeding solid fuel and ejecting ash
GB2178523A (en) * 1983-08-27 1987-02-11 Aarrow Dynamics Limited Fire grates
EP0915289A2 (fr) * 1997-11-04 1999-05-12 Pyro Industries, Inc. Brûleur à boulets pour systèmes de chauffage ou de séchage

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 002, no. 119 (M - 035) 4 October 1978 (1978-10-04) *
PATENT ABSTRACTS OF JAPAN vol. 006, no. 033 (M - 114) 27 February 1982 (1982-02-27) *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2891895A3 (fr) * 2005-10-06 2007-04-13 Georges Carret Appareil de chauffage du type chaudiere alimente en produits combustibles solides
AT503043B1 (de) * 2006-04-26 2007-07-15 Haslmayr Johann Dipl Ing Kipprost für biomassekessel
DE102010015626A1 (de) * 2010-04-19 2011-10-20 Clyde Bergemann Drycon Gmbh Vorrichtung und Verfahren zur Reinigung einer Vorrichtung zum Fördern von Verbrennungsrückständen
DE102010015626B4 (de) 2010-04-19 2022-07-28 Clyde Bergemann Drycon Gmbh Vorrichtung und Verfahren zur Reinigung einer Vorrichtung zum Fördern von Verbrennungsrückständen
EP2400217B1 (fr) * 2010-06-22 2020-08-19 Alley Enterprises Unlimited Company Brûleur fermé pour brûler du combustible granulaire
EP2573462A1 (fr) 2011-09-22 2013-03-27 S.A.R.L. Ceven Installation de chauffage à combustible solide du type à éléments individualisés
FR2980555A1 (fr) * 2011-09-22 2013-03-29 R L Ceven Sa Installation de chauffage pour combustible du type a elements individualises
IT201700012189A1 (it) * 2017-02-03 2018-08-03 Costruzioni Mecc Paterno S R L Braciere
IT201800002664A1 (it) * 2018-02-14 2019-08-14 Edilkamin S P A Stufa a combustibile solido.

Also Published As

Publication number Publication date
ITUD20010096A1 (it) 2002-11-25
EP1260764B1 (fr) 2006-07-26
ATE334344T1 (de) 2006-08-15
DE60213321D1 (de) 2006-10-12

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