WO2006089331A2 - Systeme de chauffage destine a des combustibles en morceaux - Google Patents

Systeme de chauffage destine a des combustibles en morceaux Download PDF

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Publication number
WO2006089331A2
WO2006089331A2 PCT/AT2006/000081 AT2006000081W WO2006089331A2 WO 2006089331 A2 WO2006089331 A2 WO 2006089331A2 AT 2006000081 W AT2006000081 W AT 2006000081W WO 2006089331 A2 WO2006089331 A2 WO 2006089331A2
Authority
WO
WIPO (PCT)
Prior art keywords
chute
sensor
light
heating device
combustion chamber
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/AT2006/000081
Other languages
German (de)
English (en)
Other versions
WO2006089331A3 (fr
Inventor
Dietmar Kessler
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.)
'calimax' Entwicklungs- & Vertriebs-Gmbh
Original Assignee
'calimax' Entwicklungs- & Vertriebs-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 'calimax' Entwicklungs- & Vertriebs-Gmbh filed Critical 'calimax' Entwicklungs- & Vertriebs-Gmbh
Priority to EP06704723A priority Critical patent/EP1891373A2/fr
Publication of WO2006089331A2 publication Critical patent/WO2006089331A2/fr
Anticipated expiration legal-status Critical
Priority to NO20074935A priority patent/NO20074935L/no
Publication of WO2006089331A3 publication Critical patent/WO2006089331A3/fr
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
    • 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
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus

Definitions

  • the invention relates to a heating device according to the preamble of claim 1.
  • the invention relates to heating devices for wood pellets.
  • particulate fuels such as e.g. Coke, pelleted straw, briquettes, chips or wood pellets abandoned on the chute on the slide and slide over this into the combustion chamber.
  • particulate fuels such as e.g. Coke, pelleted straw, briquettes, chips or wood pellets abandoned on the chute on the slide and slide over this into the combustion chamber.
  • a device for conveying solid fuels, in particular pellets, from a reservoir via a conveyor to a combustion chamber is known.
  • a closure is arranged in the fuel downpipe between the mouth of the delivery line and the combustion chamber.
  • a sensor detects the pellets forwarded to the combustion chamber, the drive of the closure and the sensor being connected to a control unit so that the delivery process can be regulated as a function of the quantity of fuel detected by the sensor.
  • the aim of the invention is to safely avoid burn-back and to create a simply constructed monitoring device.
  • the threshold value element thus expediently comprises a timing element which determines whether the duration of the sensor signal, in particular the duration of the interruption of the light barrier, continues beyond a predetermined period of time. If applicable, this is considered as a fault.
  • a light sensor can also be used to measure the duration of the arrival of light reflected by pieces of fuel and to count the exceeding of a time limit as a fault. In a similar way, the signal evaluation of capacitance and sound sensors. If the signals emitted by the sensors last longer than a predetermined time for the slippage of a pellet, a fault message or an interruption of the supply takes place.
  • the features of claims 4 to 6 can be provided.
  • the evaluation of the signals from these sensors can be carried out according to specific thresholds for the capacity or the intensity of the signals arriving at the receiver.
  • the capacitance changes in the region of the chute monitored by the sensor arrangement 1 certain extent addition, for example, due to the humidity of the wood pellets, or changes the incoming at a sound receiver of the sound sensor assembly sound energy due to the scattering and / or attenuation of a sound signal through the between
  • ⁇ u 1 shows schematically a heating device according to the invention.
  • FIG. 2 schematically shows the heating device according to FIG. 1 in a sectional view
  • FIGS. 3 to 6 show various embodiments of sensors and evaluation circuits for detecting a jam of pellets.
  • Figs. 1 and 2 show schematically a heating device according to the invention.
  • a reservoir 2 is held in a frame 1 for receiving wood pellets.
  • a conveyor pipe 3 with screw conveyor 18 obliquely upwards to a chute 8, which opens into a combustion chamber 9 (Fig. 2), in which a combustion pot 14 is arranged, which serves to 0 recording the burning wood pellets.
  • a screw conveyor 18 is arranged, which is drivable via a motor M, not shown in Figs. 1 and 2.
  • an intake pipe 4 the air passes under the combustion pot 14 opens.
  • the fuel gases spread in the combustion chamber 9 and 5 are withdrawn via an exhaust fan 13.
  • a fan 30 supplied room air trains 10 formed by intermediate plates 16 is performed.
  • an ignition device 11 is arranged, with which the first pellets are ignited when the heater is started up.
  • a burn-back fuse 7 is arranged in the area of the chute 8.
  • a combustion chamber temperature sensor 15 is arranged in the uppermost region of the combustion chamber 9, which cooperates with the control of the motor M of the screw conveyor 18.
  • Fig. 3 is an embodiment of a schematically as
  • the sensor 7 comprises one in a fifth
  • the evaluation circuit 22 includes a timer 23, which specifies a permissible time limit or an allowable time interval for an interruption of the light barrier 20, 84, as occurs when a pellet 100, the light barrier 20, 84 traverses. If this time interval is exceeded, as is the case when pellets 100 accumulate, the timer 23 sends a signal to the controller 24 of the motor M of the screw conveyor 18 and sets it to stand still. 0 This prevents further wood pellets 100 are abandoned on the chute 8, which could propagate a possible burn back into the reservoir 2.
  • a capacitance sensor In one embodiment of the invention according to FIG. 4, a capacitance sensor
  • the two electrodes 31, 32 are electrically insulated in the bottom 82 and 5 inserted in the cover 85 of the chute 8 and connected to an AC power source 86. Furthermore, an evaluation circuit 33 is connected to the electrodes 31, 32, which detects the capacitance between the electrodes and is connected to a threshold value circuit 34. This threshold circuit outputs a signal to the controller 24 at a value exceeding a certain value exceeding a value, whereby the motor M is stopped. In this case, a considerable change or a decrease in the value of the capacitance between the electrodes 31, 32 is to be expected if too many wood pellets 100 lie in the region of the electrodes 31, 32.
  • a timer 23 may be provided instead of the threshold circuit 34.
  • the time during which the capacitance between the electrodes 31, 32 changes due to the passage of a wood pellet is compared with a predetermined period of time, as already explained in the embodiment of FIG. 3, and depending on the comparison if necessary, the engine M is shut down.
  • a further embodiment similar to that shown in FIG. 4 provides that a sound sensor is used instead of the capacitance sensor.
  • a sound sensor is used instead of the capacitance sensor.
  • one or more pellets 100 attenuate the emitted sound signal or change its reflection in the sound pickup, whereby a forming congestion of the wood pellets 100 can be detected. Again, the duration of the signal change to detect a
  • the senor is provided by a light source 90 arranged on the cover 85 of the chute 8 and transversely to the longitudinal direction 1 of the slide 8 arranged series of photosensitive sensors 91 are formed, which are connected to an evaluation circuit 92 which compares a signal from the bottom 82 and any wood pellets 100 reflected thereon corresponding signal with a predetermined value and lying outside a predetermined range 5 Values a signal to the controller 24 outputs and the motor M of the screw conveyor 18 stops.
  • a light source 90 arranged on the cover 85 of the chute 8 and transversely to the longitudinal direction 1 of the slide 8 arranged series of photosensitive sensors 91 are formed, which are connected to an evaluation circuit 92 which compares a signal from the bottom 82 and any wood pellets 100 reflected thereon corresponding signal with a predetermined value and lying outside a predetermined range 5 Values a signal to the controller 24 outputs and the motor M of the screw conveyor 18 stops.
  • the sensors are expediently designed for higher temperatures, for example 12O 0 C, '®.
  • Fig. 6 shows a preferred embodiment of the invention in a section through a chute 8. Parallel to the chute bottom 82, a light beam L with the light guide. 5
  • This light beam has a certain intensity
  • light reflected by wood pellets 100 is supplied to the evaluation circuit 22.
  • the intensity of the supplied light beam L may be relatively low; It is usually sufficient if the intensity is dimensioned such that the light reflected by wood pellets 100, which are situated just in front of the exit opening of the light guide 20, can be detected or recognized by the evaluation circuit 22 as a reflected light signal.
  • the supplied wood pellets 100 lay the chute across its entire width. As a result, wood pellets 100 also arrange in front of the exit opening of the light guide 20.
  • Width has misplaced.

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)
  • Feeding Of Articles To Conveyors (AREA)

Abstract

L'invention concerne un système de chauffage destiné à des combustibles en morceaux solides, notamment des copeaux ou des pastilles de bois (100). Ce dispositif comprend un dispositif de transport (3, 18) commandé par un dispositif de commande (24) et un toboggan (8) qui est destiné au combustible en morceaux, qui est alimenté par le dispositif de transport et aboutit à une chambre de combustion (9). L'invention vise à permettre de détecter facilement un bouchon de pastilles de bois (100). A cet effet, on associe au toboggan (8), à proximité de la chambre de combustion (9), un détecteur (7) qui permet de détecter la charge en combustible du toboggan (8) et qui comprend un circuit d'évaluation (22) doté d'un élément de valeur de seuil, notamment d'un élément de temps (23) qui est lié au dispositif de commande (24) de l'unité de transport et/ou de l'unité génératrice de signaux (50) et qui, en cas de dépassement d'une valeur seuil, cède un signal à cette unité.
PCT/AT2006/000081 2005-02-28 2006-02-23 Systeme de chauffage destine a des combustibles en morceaux Ceased WO2006089331A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP06704723A EP1891373A2 (fr) 2005-02-28 2006-02-23 Systeme de chauffage destine a des combustibles en morceaux
NO20074935A NO20074935L (no) 2005-02-28 2007-09-28 Varmeanordning for brennstoff i biter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3362005A AT501478B1 (de) 2005-02-28 2005-02-28 Heizeinrichtung für stückige brennstoffe
ATA336/2005 2005-02-28

Publications (2)

Publication Number Publication Date
WO2006089331A2 true WO2006089331A2 (fr) 2006-08-31
WO2006089331A3 WO2006089331A3 (fr) 2008-03-06

Family

ID=36927773

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2006/000081 Ceased WO2006089331A2 (fr) 2005-02-28 2006-02-23 Systeme de chauffage destine a des combustibles en morceaux

Country Status (4)

Country Link
EP (1) EP1891373A2 (fr)
AT (1) AT501478B1 (fr)
NO (1) NO20074935L (fr)
WO (1) WO2006089331A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2157373A1 (fr) * 2008-08-18 2010-02-24 Ulrich Finger Installation de chargement d'agglomérés de bois
ITPD20090069A1 (it) * 2009-03-30 2010-09-30 Adam Corrado D Alimentatore a coclea per serbatoi per generatori di calore a combustibili solidi derivati da scarti vegetali o della lavorazione del legno
EP2410242A3 (fr) * 2010-07-23 2017-11-08 Karl Stefan Riener Dispositif de commande pour un dispositif de combustion de biomasse et procédé de commande d'un dispositif de combustion de biomasse

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5893358A (en) * 1997-11-04 1999-04-13 Pyro Industries, Inc. Pellet fuel burner for heating and drying systems
SE517021C2 (sv) * 2000-04-28 2002-04-02 Swedish Bioburner System Ab Anordning för förbränning av granulärt fast bränsle
AT411706B (de) * 2002-09-06 2004-04-26 Biotech Gmbh En Und Heiztechni Einrichtung und verfahren zum fördern von festen brennstoffen, insbesondere pellets

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2157373A1 (fr) * 2008-08-18 2010-02-24 Ulrich Finger Installation de chargement d'agglomérés de bois
ITPD20090069A1 (it) * 2009-03-30 2010-09-30 Adam Corrado D Alimentatore a coclea per serbatoi per generatori di calore a combustibili solidi derivati da scarti vegetali o della lavorazione del legno
EP2410242A3 (fr) * 2010-07-23 2017-11-08 Karl Stefan Riener Dispositif de commande pour un dispositif de combustion de biomasse et procédé de commande d'un dispositif de combustion de biomasse

Also Published As

Publication number Publication date
WO2006089331A3 (fr) 2008-03-06
EP1891373A2 (fr) 2008-02-27
AT501478B1 (de) 2006-09-15
NO20074935L (no) 2007-11-21
AT501478A4 (de) 2006-09-15

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