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WO2008104012A1 - Système d'allumage pour fours à combustible solide et four à combustible solide - Google Patents

Système d'allumage pour fours à combustible solide et four à combustible solide Download PDF

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Publication number
WO2008104012A1
WO2008104012A1 PCT/AT2008/000062 AT2008000062W WO2008104012A1 WO 2008104012 A1 WO2008104012 A1 WO 2008104012A1 AT 2008000062 W AT2008000062 W AT 2008000062W WO 2008104012 A1 WO2008104012 A1 WO 2008104012A1
Authority
WO
WIPO (PCT)
Prior art keywords
ignition
ignition device
fuel
combustion chamber
solid fuel
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.)
Ceased
Application number
PCT/AT2008/000062
Other languages
German (de)
English (en)
Inventor
Karl Gütl
Peter Resch
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.)
Individual
Original Assignee
Individual
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
Priority claimed from AT3132007A external-priority patent/AT504891B1/de
Application filed by Individual filed Critical Individual
Publication of WO2008104012A1 publication Critical patent/WO2008104012A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/02—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs for igniting solid fuel

Definitions

  • the invention relates to an ignition arrangement according to the preamble of claim 1, as well as a solid fuel furnace according to the preamble of claim 14 or claim 19.
  • the ignition arrangement according to the invention is usually used in the field of furnace construction.
  • Solid fuel stoves are usually understood to mean furnaces which are fired with solid, large-sized or flame-resistant fuel, in particular firewood. So far, such solid fuel stoves are ignited mostly by hand, which is cumbersome and dangerous. Although automatic igniting devices for solid fuel stoves are known, they only function if deliberately smaller-sized, highly flammable scale material is brought into the vicinity of the ignition device when the furnace is being filled. It ignites then first the small piece of scale material and only then the flame retardant fuel.
  • the problem of ignition for large and flame retardant fuel, such as logs, is that it requires a significant ignition energy, which is difficult to achieve through an igniter. Also, the distribution of the large-sized fuel within the combustion chamber is not homogeneous, as is the case for example with a chip or pellet burner, but very inhomogeneous and has larger cavities. Thus, an effective ignition can not always be guaranteed well.
  • a further problem with the prior art is that the ignition devices previously known from the prior art remain in the combustion chamber after ignition or after the start of the combustion process. However, as a result of the heat development in the combustion chamber damage to the ignition itself and their components.
  • the prior art offers the solution of locally separating the ignition device from the combustion chamber and, for example, supplying the thermal energy by means of hot air into the combustion chamber so as to ignite the fuel.
  • highly flammable fuel such as chips or pellets
  • low ignition energy such as e.g. Log
  • the object of the invention is therefore to provide a solid fuel furnace, with the flame-retardant fuel materials are easily and efficiently flammable.
  • the advantageous features of claim 1 ensures that the ignition device is sufficiently long in contact with the fuel. A loss of contact between the ignition device and the fuel, for example by charring the top layer of the log or by falling over the contacted log can be avoided in this way.
  • the ignition process is fast, energy efficient and efficient.
  • the ignition device can be particularly easily and reliably brought into contact with the fuel. According to claim 3, an excessive load on the ignition device by
  • the operating time of the ignition device can be shortened, whereby energy is saved and the life of the ignition device is increased.
  • an ignition arrangement according to claim 5 it can be achieved that in the absence of fuel, the ignition device is not loaded, and that contact between the ignition device and the fuel is restored at temporary loss of contact.
  • an electric ignition device according to claim 6 and a ceramic heating element the ignition of solid fuels is particularly efficient to perform.
  • an ignition arrangement according to claim 8 is particularly easy to manufacture.
  • An ignition assembly according to claim 9 improves the contact between the ignition device and the fuel.
  • An ignition assembly according to claim 10 increases the life of the ignition device.
  • An ignition assembly according to claim 11 prevents unnecessary stress on the igniter assembly when no fuel is available.
  • a very simple construction of the ignition arrangement results according to claim 12.
  • An ignition arrangement according to claim 13 can be operated as far as possible automatically.
  • a solid fuel furnace according to claim 15 has the advantage that the life of the ignition device is increased.
  • a solid fuel furnace according to claim 16 has the advantage that the ignition device can be guided or stored in a particularly simple manner.
  • a solid fuel furnace according to claim 17 has the advantage that the ignition of the fuel can be better detected.
  • a solid fuel furnace according to claim 18 has a lower energy consumption and a lower wear of the ignition device.
  • the object of the invention is further to overcome the problems of the prior art and to provide a solid fuel furnace, are easily flammable with the flame retardant fuel, at the same time the ignition is spared.
  • a solid fuel furnace is provided, which is suitable for the combustion of solid, large-sized or flame-retardant fuel, in particular firewood.
  • Such solid fuel furnaces are particularly adapted for receiving bulk fuel.
  • the combustion chamber must be large enough to accommodate, for example, bulky firewood can.
  • the entire furnace and in particular the combustion chamber and its walls must be mechanically stable enough to fill the combustion chamber with heavy, large pieces of firewood or heavy logs, which are usually introduced from above at high speed and correspondingly large impulse, without damage survive.
  • Solid fuel furnaces are distinguishable in this regard from other furnaces, for example from pellet stoves.
  • the solid fuel furnace according to the invention has a combustion chamber and a
  • the ignition device is from a heat-protected area outside the combustion chamber for igniting the fuel in the combustion chamber einbringbar and after ignition from the combustion chamber again completely ausbringbar and traceable to the heat-protected area.
  • the present fuel can be ignited quickly and easily and with the utmost protection of the ignition.
  • the ignition device is designed as an electrical ignition device.
  • An electric ignition device ensures the large ignition energy required for flame-retardant and large-sized fuel and is inexpensive and durable in its operation.
  • Other ignition sources such as gas, oil or other lighters are complicated and expensive and cumbersome in the application.
  • the ignition device should advantageously be brought as close as possible to the fuel and even touch this, if possible, to effect an effective and rapid ignition.
  • the ignition device can be moved in and out of the combustion chamber in different ways, for example via a sliding mechanism or a pivoting mechanism.
  • a guide recess is formed in the wall of the combustion chamber, through which the ignition device is linearly inserted and pushed out.
  • the guide recess can be made lockable. The movement of the ignition device can either by hand or over a
  • Drive unit can be performed, wherein the drive unit can be controlled by an automatic control, which can be ensured that the ignition device does not remain longer than necessary in the combustion chamber.
  • the ignition device can be activated or deactivated by hand or via an automatic control. This serves for the effective and automatic control of the ignition process.
  • a device may be provided as a safety mechanism that activates the ignition device only when it is actually in the combustion chamber and deactivated again as soon as it retreats from the combustion chamber. In this way, unnecessary energy losses or thermal damage of the non-heat-stable components of the furnace can be prevented. Further advantages and embodiments of the invention will become apparent from the description and from the accompanying drawings.
  • Fig. 1 shows an embodiment of the ignition arrangement according to the invention from the side.
  • Fig. 2 shows an embodiment of the ignition arrangement according to the invention from above.
  • Fig. 3 shows an embodiment of the ignition assembly according to the invention wherein the ignition device is in contact with firewood.
  • Fig. 4 shows a solid fuel furnace according to the invention, which with
  • FIG. 5 shows a solid fuel furnace according to the invention in the filled state.
  • Fig. 6 to 9 shows the ignition process in detail.
  • the embodiment of the invention shown in the two FIGS. 1 and 2 shows the ignition arrangement from the side or from above.
  • the ignition arrangement comprises at least one ignition device 6 for igniting lumpy or flame-retardant material 5, in particular firewood.
  • the flame retardant fuel 5 is shown in FIG.
  • pressing means T are provided, which bring the ignition device in constant contact with the fuel 5 or the contact between the ignition 6 and the fuel 5 must be maintained at least throughout the ignition until the ignition of the fuel 5.
  • the pressing means T are in the present preferred embodiment electromechanical or pneumatic drive units 7 with which the ignition device 6 is movable.
  • the ignition device 6 is movable along a predetermined path by a guide, in particular to the fuel and / or away from the fuel.
  • at least one spring means is provided as the pressing means T.
  • An ignition detector at the ignition can be arranged on the ignition arrangement or connected to the ignition arrangement via a control unit. By the ignition detector can be determined whether an ignition of the fuel has occurred. As soon as an ignited fuel material is detected by the ignition detector, the ignition device 6 is deactivated via a control unit. Furthermore, the Pressing T removed from the fuel and the contact of the ignition device 6 dissolved with the ignited fuel 5.
  • a resistance detector can be provided, by which it can be determined whether the ignition device has encountered fuel or is in contact therewith.
  • a resistance sensor can detect either the current consumption of a pressing means designed as an electric motor, or the pressure on a pneumatic drive unit.
  • the resistance detector is arranged on the ignition device 6, wherein the contact of the fuel is determined by the ignition device by means of a arranged on the ignition pressure sensor or pressure switch.
  • the pressure means or the drive unit 7 and / or the ignition device 6 are controlled such that the ignition device is activated or ignited only when it encounters fuel 5 is or has passed from the resistance detector or touch sensor, a corresponding signal to the control unit.
  • the control unit sets the pressing means T, in particular the drive unit 7, in motion or activates them, whereupon the fuel 5 is heated by the ignition device and set on fire.
  • the drive unit 7 remains activated until the ignition device 6 has encountered fuel 5. However, if no fuel 5 on the predetermined path of the ignition device 6 is present or no contact of the ignition device 6 can come about with the fuel 5, the drive unit 7 is stopped in one of their basic positions far end position and optionally reset to its basic position. After filling or rearranging the fuel 5, this process can be performed again.
  • the ignition device 6 can be reactivated even if, during the ignition process, in particular by burning off upper layers of the fuel 5, the contact between the fuel 5 and the ignition device 6 is temporarily lost.
  • An advantageous embodiment of the ignition device 6 provides an electrical ignition device 6, for example, with a glow spiral or a glow rod. Furthermore, it can be provided that the ignition device 6 has a heating element 20 made of ceramic material at its end facing the fuel 5.
  • a simple implementation of the ignition process can be achieved in that 6 common or separate control units are provided for the drive unit 7 and / or the ignition device. These control units activate and deactivate the drive unit or the ignition device, wherein the control unit via a sensor, which acts in particular as an ignition detector, to an ignition signal is connected, which activates or deactivates the drive unit 7 and the ignition device 6.
  • a sensor which acts in particular as an ignition detector
  • ignition detector may further act a thermostat, a photocell, an exhaust gas temperature sensor, a lambda probe, a boiler temperature sensor or a timer.
  • a special simple storage of the ignition device 6 is ensured if it is displaceable or pivotable along a, in particular linear path.
  • a guide by means of two nested, preferably hollow cylindrical tubes.
  • an axially with respect to the guide tube 22 mounted further guide tube 23 is provided, which can be moved over the, in particular electric drive means 7 'axially to the guide tube 22.
  • the ignition device 6 is arranged at one of the ends of the further guide tube 23, the ignition device 6 is arranged.
  • the further guide tube 23 includes recesses for receiving teeth of a gear connected to a drive means. By rotation of the corresponding gear, the further guide tube 23 and the ignition assembly can be moved along a predetermined linear path.
  • the ignition device 6 By burning off the fuel 5 at the surface, the contact of the ignition device 6 with the fuel is lost after some time. By periodic actuation of the drive unit 7, the ignition device 6 is brought into contact with the fuel 5, whereby the ignition process continues and cancellation of the ignition is avoided.
  • the ignition device after ignition especially after detection of an ignition signal by an ignition detector, can be brought into its normal position.
  • a further connection to the control unit can be provided which, after passing through the path without triggered ignition, in particular upon reaching the end opposite the basic position, resets or resets the ignition device 6 to the original basic position.
  • An embodiment of the ignition detector by means of a temperature measuring device can be such that a temperature measuring device is provided in the end of the ignition and that the drive unit disables the ignition and returns to its normal position when a threshold temperature TT exceeded by the temperature measured by the temperature measuring unit.
  • FIG. 4 shows the arrangement of the ignition arrangement according to the invention in a solid fuel furnace 1.
  • a guide recess 8 is provided, through which the ignition arrangement according to the invention is introduced into the combustion chamber 2 of the solid fuel furnace 1.
  • the ignition of a heat-protected area 9 outside the combustion chamber 2 in introduced and immediately withdrawn immediately after ignition from the combustion chamber 2 in the heat-protected area.
  • a wall 10 of the combustion chamber 2 is used.
  • a simple introduction of the ignition arrangement according to the invention is effected by a continuous guide recess 8 in the wall 10 of the combustion chamber 2, which guide recess 8 as a sleeve od.
  • the ignition device 6, in particular displaceable be stored, wherein optionally the guide recess 8 on the side of the combustion chamber 2 and the inside of the solid fuel furnace, in particular heat-insulating, can be closed.
  • a corresponding unit for closing this guide recess may also be controlled by an ignition detector and connected to a control unit.
  • An improvement in the ignition detection can be achieved by arranging at least one sensor or ignition detector in the combustion chamber 2. To prevent damage and increase the life of the
  • Ignition device 6 can be provided that the ignition device 6 is then activated or can be activated when the ignition device is within the combustion chamber 2. When leaving the combustion chamber, the ignition device 6, in particular immediately, deactivated.
  • an inventive solid fuel furnace 1 which has a combustion chamber 2 and further a fixed in its lower region ashtray 3 and an underlying ash chamber 4.
  • the solid fuel furnace 1 and the combustion chamber 2 are surrounded by a stable wall 10, the hot area of the solid fuel furnace 1 from the heat-protected area 9 outside the solid fuel furnace 1 demarcates.
  • the wall 10 and the ashtray 3 are designed to be mechanically stable enough to withstand the weight and momentum of logs lying thereon or falling thereon without damage.
  • the solid fuel furnace 1 or its design is particularly suitable for fuel 5 with dimensions of more than 20 cm in length and / or more than 5 cm in thickness and / or a weight of more than 1 kg per piece.
  • the solid fuel furnace 1 is filled with solid, large-sized or flame-retardant fuel 5 in the form of heavy billet pieces.
  • the firewood lies in longitudinal alignment parallel to each other on the ashtray 3.
  • an ignition device 6 is shown in the region of the combustion chamber 2 above the ash grate 3, which protrudes into the region of the combustion chamber 2 in FIG.
  • the ignition device 6 is mounted in a guide recess 8, which is extends through the wall 10 and allows a linear reciprocating movement of the ignition device 6.
  • a drive unit 7 is provided, which can move the ignition device 6 to the left or to the right.
  • FIGS. 6 to 9 show details of the detail X of FIG. 1 at different times.
  • Fig. 6 the ignition device 6 is shown in its maximum retracted extreme position. Although the ignition device 6 is still in the region of the wall 10, but it is completely withdrawn from the region of the combustion chamber 2.
  • the guide recess 8 can be closed on the side of the combustion chamber 2 for thermal insulation or to avoid mechanical damage.
  • a drive unit 7 which controls the movement of the ignition device 6.
  • the drive unit 7 can either be activated manually or it can be provided a control device which can be actuated via a sensor, for example a photocell, an exhaust gas temperature sensor, a lambda probe, a boiler temperature sensor, a thermostat and / or a timer, via which the drive unit 7 is activated or deactivated.
  • a sensor for example a photocell, an exhaust gas temperature sensor, a lambda probe, a boiler temperature sensor, a thermostat and / or a timer, via which the drive unit 7 is activated or deactivated.
  • the Ignition device is triggered either by hand or via a control device.
  • the control device may have a sensor, for example via a photocell, an exhaust gas temperature sensor, a lambda probe, a boiler temperature sensor or a timer.
  • a resistance sensor could be provided, which determines whether the ignition device 6 has encountered or is in contact with fuel 5.
  • the ignition device 6 is designed as an electrical ignition device in the form of a glow rod in the present embodiment.
  • the ignition device 6 brings the required for the ignition of the flame-retardant material ignition energy, whereby the fuel 5 is set in accordance with FIG. 9 on fire.
  • a sensor which now deactivates the ignition device 6 again to avoid unnecessary energy losses.
  • a control device or a sensor may be provided which activates the drive unit 7 again and the ignition device 6 linearly back from the combustion chamber 2 in its initial position shown in FIG. 9 moves back.
  • the suitable control devices or sensors have already been described above.
  • the ignition device 6 can be retracted not only in the wall 10 of the solid fuel furnace 1, but in a region entirely outside of the combustion chamber and the wall 10. This is particularly necessary if prevail in the combustion chamber 2 very high temperatures and also the area of the wall 10 is heated considerably.
  • a pivoting mechanism may be provided, via which the ignition device 6 can be pivoted into and out of the region of the combustion chamber 2.
  • a safety device can be provided, which provides that the ignition device 6 is only activated or is activated when the ignition device 6 is located within the combustion chamber 2 and / or is then deactivated or deactivated when the ignition device 6 again is located outside the combustion chamber 2. In this context, it is advantageous if the deactivation takes place immediately when the ignition device 6 is removed from the combustion chamber 2 again.

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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)
  • Solid-Fuel Combustion (AREA)

Abstract

L'invention concerne un système d'allumage et un four à combustible solide comprenant au moins un dispositif d'allumage (6) servant à allumer un combustible (5) en morceaux ou difficilement inflammable, situé en particulier dans une chambre de combustion (2) d'un four à combustible solide (1), ce combustible (5) étant en particulier du bois de chauffage. L'invention se caractérise en ce que des moyens de pression (7') sont utilisés pour maintenir le dispositif d'allumage (6) en contact permanent avec le combustible (5), au moins pendant la totalité du processus d'allumage ou jusqu'à l'allumage du combustible (5).
PCT/AT2008/000062 2007-02-28 2008-02-26 Système d'allumage pour fours à combustible solide et four à combustible solide Ceased WO2008104012A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ATA313/2007 2007-02-28
AT3132007A AT504891B1 (de) 2007-02-28 2007-02-28 Festbrennstoffofen
ATA1800/2007 2007-11-07
AT18002007A AT505551B1 (de) 2007-02-28 2007-11-07 Zündanordnung

Publications (1)

Publication Number Publication Date
WO2008104012A1 true WO2008104012A1 (fr) 2008-09-04

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ID=39561964

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2008/000062 Ceased WO2008104012A1 (fr) 2007-02-28 2008-02-26 Système d'allumage pour fours à combustible solide et four à combustible solide

Country Status (1)

Country Link
WO (1) WO2008104012A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101907299A (zh) * 2009-06-02 2010-12-08 车战斌 燃烧器及其燃烧炉具
AT511145A1 (de) * 2011-03-14 2012-09-15 Riener Karl Stefan Verfahren zur regelung einer heizeinrichtung
ITVI20130017A1 (it) * 2013-01-25 2014-07-26 Ht S P A Dispositivo per l'accensione di materiale combustibile solido
DE102016002533A1 (de) * 2016-03-01 2017-09-07 Karl Stefan Riener Kontaktzündeinrichtung für Biomassefeuerung
CN108731028A (zh) * 2018-08-01 2018-11-02 山东超万采暖设备有限公司 电磁伸缩保护点火装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1446646A (fr) * 1965-09-08 1966-07-22 Gen Electric Appareil électrique pour l'allumage des feux
FR2721096A1 (fr) * 1994-06-10 1995-12-15 Philippe Zinty Dispositif d'alimentation et d'allumage automatique d'une chaudière avec du bois de chauffage.
US5617841A (en) * 1991-08-14 1997-04-08 Pyro Industries, Inc. Grate with self ignitor for burning pellet fuel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1446646A (fr) * 1965-09-08 1966-07-22 Gen Electric Appareil électrique pour l'allumage des feux
US5617841A (en) * 1991-08-14 1997-04-08 Pyro Industries, Inc. Grate with self ignitor for burning pellet fuel
FR2721096A1 (fr) * 1994-06-10 1995-12-15 Philippe Zinty Dispositif d'alimentation et d'allumage automatique d'une chaudière avec du bois de chauffage.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101907299A (zh) * 2009-06-02 2010-12-08 车战斌 燃烧器及其燃烧炉具
AT511145A1 (de) * 2011-03-14 2012-09-15 Riener Karl Stefan Verfahren zur regelung einer heizeinrichtung
AT511145B1 (de) * 2011-03-14 2014-03-15 Riener Karl Stefan Verfahren zur regelung einer heizeinrichtung
ITVI20130017A1 (it) * 2013-01-25 2014-07-26 Ht S P A Dispositivo per l'accensione di materiale combustibile solido
DE102016002533A1 (de) * 2016-03-01 2017-09-07 Karl Stefan Riener Kontaktzündeinrichtung für Biomassefeuerung
CN108731028A (zh) * 2018-08-01 2018-11-02 山东超万采暖设备有限公司 电磁伸缩保护点火装置

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