EP2228603A2 - Procédé de réglage de la puissance d'un four à carburant solide et four doté d'un réglage de la puissance correspondant - Google Patents

Procédé de réglage de la puissance d'un four à carburant solide et four doté d'un réglage de la puissance correspondant Download PDF

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Publication number
EP2228603A2
EP2228603A2 EP10000906A EP10000906A EP2228603A2 EP 2228603 A2 EP2228603 A2 EP 2228603A2 EP 10000906 A EP10000906 A EP 10000906A EP 10000906 A EP10000906 A EP 10000906A EP 2228603 A2 EP2228603 A2 EP 2228603A2
Authority
EP
European Patent Office
Prior art keywords
primary
combustion chamber
opening
flue
flue gas
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Withdrawn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
EP10000906A
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German (de)
English (en)
Other versions
EP2228603A3 (fr
Inventor
Gerdum Dr. Enders
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.)
GLOBAL MIND NETWORK GmbH
Original Assignee
GLOBAL MIND NETWORK GmbH
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 GLOBAL MIND NETWORK GmbH filed Critical GLOBAL MIND NETWORK GmbH
Publication of EP2228603A2 publication Critical patent/EP2228603A2/fr
Publication of EP2228603A3 publication Critical patent/EP2228603A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • F24B1/026—Closed stoves with several combustion zones
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B80/00—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
    • F23B80/04—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for guiding the flow of flue gases, e.g. baffles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/007—Regulating air supply or draught using mechanical means
    • 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
    • F23N5/025—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using electrical or electromechanical 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
    • F24B5/00—Combustion-air or flue-gas circulation in or around stoves or ranges
    • F24B5/02—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves
    • F24B5/021—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves combustion-air circulation
    • F24B5/026—Supply of primary and secondary air for combustion

Definitions

  • the invention relates to a method for regulating the performance of a solid fuel furnace according to the preamble of claims 1 and 2.
  • the invention further relates to furnaces each having a control of the type described above.
  • An oven of the type mentioned is from the EP 1 340 943 A2 known.
  • the known from the prior art furnace has an upper and a lower chamber, a so-called primary and a so-called secondary chamber, which are interconnected by a bottom, wherein the bottom has a bottom opening. Located in the area of the bottom opening a rust for receiving the fuel.
  • the furnace has openings for supplying the primary air and, in addition, in the region of the bottom, and in particular in the area of the bottom opening, openings for the secondary air. From the lower chamber outgoing an exhaust duct is provided, which opens into the flue of the chimney.
  • the upper combustion chamber is also provided with a passage to the flue.
  • a pivotable flap For shutting off either the transition from the upper combustion chamber to the flue gas duct or the opening from the exhaust gas duct to the flue gas duct, a pivotable flap is provided. This flap is manually operated. In addition, there is a further control flap on the side of the furnace in the region of the bottom between the two combustion chambers, which is manually actuated by a lever. Depending on the position of the control flap, the fresh air supply, namely primary and secondary side, regulated.
  • the object underlying the invention is therefore to make a scheme with which a limitation of power peaks is possible with the aim of a continuous output of the furnace, this goal is to be achieved substantially automated.
  • the primary air flow Upon reaching a predetermined temperature range between 250 ° C and 400 ° C is now reduced by the first temperature sensor, the primary air flow, the secondary air flow rate is kept at least constant.
  • the reduction of the primary air volume flow by a control device can be achieved by arranging a pivotable primary air damper in a primary air duct of the furnace, the position of which, as already stated, can be regulated by the first temperature sensor is.
  • the transition opening from the primary combustion chamber to the flue gas pass is at least partially shut off by a flue gas flap.
  • the outlet of the secondary flue gas duct to the flue is also lockable. This means that during the burn-through phase, the transition opening between the primary chamber and the flue is completely open or substantially completely open and parallel to the outlet of the secondary exhaust gas channel is shut off.
  • the opening of the secondary exhaust gas duct takes place in parallel with the shut-off of the transition opening between the primary combustion chamber and the flue gas duct.
  • a single flue gas flap is provided for shutting off the outlet of the secondary exhaust gas channel and the transition opening. hereby It is achieved that virtually automatically a reduction in the transitional opening between the primary combustion chamber and flue gas duct has an increase in the passage of the secondary exhaust gas channel to the flue gas train result.
  • a second temperature sensor is provided in the flue substantially immediately after the transition opening from the primary combustion chamber to the flue, through which the position of the flue gas flap is controlled in dependence on the temperature at the second temperature sensor.
  • a corresponding change in the position of the flue gas flap takes place in the temperature range between 150 ° C and 300 ° C, but preferably at about 200 ° C. This means that when reaching a temperature of about 200 ° C in the flue immediately after the transition opening, the flue gas flap from the position in the state of burning - ie during burnout, in which the transition opening was opened by the primary combustion chamber and the secondary exhaust duct - now angled Position assumes so that the transition opening is closed to the extent that the secondary exhaust duct is opened.
  • a furnace with a control of the type described above is characterized by the change of the free cross section in the wall or bottom opening by a slider. This can happen, on the one hand, that the slide has two relatively movable, in particular rotatable, disks with individual openings, which have the advantage that, in accordance with the orientation of the openings in the slide, a visually appealing flame pattern is achieved.
  • a thermal energy storage is arranged in the secondary combustion chamber.
  • Such an energy store does not primarily have the task of storing the heat in the oven and to allow a uniform heat dissipation, but it serves in particular a reduction of the CO content in the exhaust gas. This insofar as when the burning power is reduced, due to the progress of the burning of the fuel, through the energy storage, which is for example designed as a fireclay plate, the exhaust gas temperature is maintained at least over a certain period of time so high that a residual gas combustion is guaranteed.
  • the bottom of the primary combustion chamber is formed so that on the one hand has a passage to the secondary combustion chamber and on the other hand receives the ash as ash box.
  • the ash box is located at the bottom of the primary combustion chamber. Through the opening in the floor or the wall so only the fly ash, ie the entrained with the flow particles. With low ash load in the secondary combustion chamber can be better mixing of the flue gases with the secondary air can be achieved by appropriate installations. Good mixing of the pyrolysis gases with the secondary air ultimately ensures a reduction of the CO content in the exhaust gas. As a further advantage eliminates the ugly sight of the ashes in the secondary combustion chamber and the latter can be made more free.
  • the standing grate in the primary combustion chamber can be attached to the ash box and is therefore very well accessible for cleaning.
  • the secondary air volume flow is at least kept constant. This is done in the simplest case in that the volume flow can be regulated separately both in the secondary air duct and in the primary air duct.
  • the primary air channel opens in the upper region of the primary combustion chamber, that is, the primary air flows through the primary combustion chamber from top to bottom.
  • the primary air and the secondary air are introduced laterally into the furnace housing, it is ensured by the separation according to the invention that the volume flows do not interfere, and that the primary air also serves to flush the pane without the flow direction must be reversed.
  • the secondary air duct for the supply of the secondary air volume flow is provided in the region of the bottom or the wall between the combustion chambers.
  • both oven variants are identical in function; they are hereinafter referred to differently only by the addition of a letter, since they have a different position in the oven partially.
  • the furnace has two chambers, namely the primary combustion chamber 10, 10a and the secondary combustion chamber 20, 20a.
  • the opening discs are 12, 22; 12a, 22a.
  • the primary combustion chamber 10, 10a and the secondary combustion chamber 20, 20a are separated by the bottom 30 or the wall 30a as a whole.
  • the bottom 30 or the wall 30a have an opening 31, 31a wherein, moreover, in the bottom or in the wall, a secondary air channel 32, 32a is provided, which serves to supply the secondary air volume flow.
  • the furnace has a primary air duct 40, 40a which has a primary air flap 45, 45a, by means of which the volumetric flow can be changed.
  • the air flows of both channels are controlled or regulated separately.
  • the ash box 33, 33a, connected to the standing grid 34, 34a, is arranged on the floor.
  • 31a In front of the opening 31, 31a is a slide 35, 35a, which communicates with the temperature measuring point 28, 28a, and controlled by the cross section of the opening changed.
  • the secondary combustion chamber 20, 20a has an opening to the secondary exhaust port 25, 25a.
  • the secondary exhaust duct 25, 25a opens into the flue 60, 60a. Between the primary combustion chamber 10, 10a and the flue 60, 60a is located at 11, 11a designated transition opening, the secondary exhaust duct 25, 25a opens into the same flue 60, 60a.
  • the secondary exhaust duct 25, 25a is closed by the flue gas flap 65, 65a, which is arranged pivotably on the furnace, into a position "A" (burn-through). In position "B" (underburner) closes the flue gas flap 65, 65 a, the transition opening 11 between the primary combustion chamber and flue gas.
  • the invention now particularly relates to the arrangement of the first temperature sensor in the secondary exhaust gas channel 25, 25a, in particular in the region of the bottom 30 or the wall 30a.
  • the arranged there temperature sensor 28, 28a is connected to a lever mechanism and ensures, for example in the formation as a bimetal that depending on the measured temperature by the slider 35, 35a, the bottom or wall opening 31, 31a is reduced or enlarged.
  • the temperature sensor may also be in communication with the fresh air supply door 45, 45a and thus regulate the supply of primary air.
  • the primary air volume flow is regulated both by the change in the free cross section of the bottom or wall opening 31, 31a and by the immediate change in the primary air volume flow.
  • a second temperature sensor 68, 68 a of the position of the flue gas flap 65, 65 a controls.
  • the mode of operation of the furnace is as follows. During the firing, ie in the burn-through or overfire mode, the flue gas flap 65, 65a is in position "A" and thus blocks the secondary exhaust duct 25, 25a to the flue 60, 60a. That is, all flue gases formed during burnout escape through the transition opening into the flue 60, 60a.
  • the supply of primary air is maximum. In this mode, the air from the channel 32, 32a acts as primary air.
  • the flue gas flap 65, 65a in the direction of the arrow 69 ie to the transition opening 11, 11a, pivoted.
  • the flames due to the suction and the at least partially closed transition opening 11, 11a and corresponding thereto the opening of the secondary exhaust gas channel in the secondary combustion chamber 20, 20a turn over.
  • a temperature is determined by the first temperature sensor 28, 28a, which is approximately at 300 ° C to 350 ° C, the primary air volume flow is reduced. This is done in detail either by the fact that the free cross-section of the bottom or wall opening between the two combustion chambers is reduced, or by the fact that the flap 45, 45a is pivoted in the primary air flow accordingly. That is, the combustion is stopped. This naturally reduces the temperature at the temperature sensor 28, 28a.
  • the primary air volume flow increases, which is accomplished in detail by the fact that the free cross section of the bottom or wall opening between the combustion chambers increases or according to the position of the flap 45, 45a provides for an increase of the primary air volume flow.
  • the performance of the furnace increases because, as already stated, the primary air volume flow, ie the supply of fresh air, is increased.
  • the secondary air volume flow decreases in percentage. It has already been explained in this connection that the secondary air volume flow and the primary air volume flow amount correlate with each other. If the temperature at the temperature sensor 68, 68a now drops below about 200 ° C., then the flue gas flap 65, 65a opens in accordance with the arrow 69a. In the end, this means that the secondary exhaust gas channel is progressively closed by the flue gas flap 65, 65a. The firing material in the primary chamber continues to burn upwards, which ensures that the flue gases can escape directly upwards into the flue.
  • the oven also has a heat storage 70, 70 a, which is arranged in the secondary combustion chamber 20. Due to the burnup in the secondary combustion chamber in the underfire mode, this memory 70, 70a is heated and ensures reduced combustion power due to increasing burnup of the fuel that the temperature in the secondary combustion chamber still remains relatively high over a certain period of time, which promotes the combustion of the residual gases.

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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)
  • Incineration Of Waste (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
EP10000906.7A 2009-03-12 2010-01-29 Procédé de réglage de la puissance d'un four à carburant solide et four doté d'un réglage de la puissance correspondant Withdrawn EP2228603A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009012905A DE102009012905B3 (de) 2009-03-12 2009-03-12 Verfahren zur Regelung der Leistung eines Festbrennstoffofens und Ofen mit einer entsprechenden Leistungsregelung

Publications (2)

Publication Number Publication Date
EP2228603A2 true EP2228603A2 (fr) 2010-09-15
EP2228603A3 EP2228603A3 (fr) 2013-12-11

Family

ID=41427540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10000906.7A Withdrawn EP2228603A3 (fr) 2009-03-12 2010-01-29 Procédé de réglage de la puissance d'un four à carburant solide et four doté d'un réglage de la puissance correspondant

Country Status (4)

Country Link
US (1) US20100229768A1 (fr)
EP (1) EP2228603A3 (fr)
CA (1) CA2696157A1 (fr)
DE (1) DE102009012905B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ307820B6 (cs) * 2015-05-13 2019-05-29 Ls Kamna S.R.O. Kamna na pevná paliva se dvěma spalovacími komorami

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK177394B1 (da) * 2011-11-07 2013-03-18 Hwam As Fremgangsmåde til forbrænding af et brændsel i en brændeovn, en brændeovn med en styreenhed samt en luftregulator til en brændeovn
US9394484B2 (en) 2013-12-13 2016-07-19 Frank Reed Pyrolysis systems
DE102015116789B4 (de) * 2015-10-02 2019-05-16 Dieter Weber Portabler Erhitzer für den Betrieb mit Biomasse als Brennstoff
IT201700040195A1 (it) * 2017-04-11 2018-10-11 Filippo Ungaro Stufa a tre fuochi
CZ307859B6 (cs) * 2018-03-12 2019-07-03 Blaze Harmony S.R.O. Topidlo na pevná paliva s třípásmovým přívodem spalovacího vzduchu
DE102018110868B4 (de) * 2018-05-07 2020-08-13 Daniel Döpper Mobil mitführbare Heizvorrichtung zum Verbrennen von Biomasse
DE102020005202A1 (de) 2020-08-25 2022-03-03 Maxitrol GmbH & Co. KG Einrichtung zur elektronischen Regelung für Kaminöfen mit unterem Abbrand
CN115388459B (zh) * 2022-08-16 2023-04-18 湖北鑫星节能炉具有限公司 一种具有烤火功能的环保型柴火炉

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1340943A2 (fr) 2002-02-27 2003-09-03 Stahl- und Apparatebau Specht OHG Poêle pour combustibles solides

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EP0175794A1 (fr) * 1984-08-24 1986-04-02 Wamsler-Herd-Und Ofen Gmbh Foyer individuel pour combustibles solides
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CH687346A5 (de) * 1991-10-04 1996-11-15 Chiquet Energietechnik Ag Feuerungsvorrichtung für feste Brennstoffe.
AU3810999A (en) * 1998-05-29 1999-12-30 Morso Jernstoberi A/S A stove for solid fuel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1340943A2 (fr) 2002-02-27 2003-09-03 Stahl- und Apparatebau Specht OHG Poêle pour combustibles solides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ307820B6 (cs) * 2015-05-13 2019-05-29 Ls Kamna S.R.O. Kamna na pevná paliva se dvěma spalovacími komorami

Also Published As

Publication number Publication date
US20100229768A1 (en) 2010-09-16
DE102009012905B3 (de) 2010-01-21
EP2228603A3 (fr) 2013-12-11
CA2696157A1 (fr) 2010-09-12

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