EP0445437B1 - Agencement pour brûleur - Google Patents

Agencement pour brûleur Download PDF

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Publication number
EP0445437B1
EP0445437B1 EP90125799A EP90125799A EP0445437B1 EP 0445437 B1 EP0445437 B1 EP 0445437B1 EP 90125799 A EP90125799 A EP 90125799A EP 90125799 A EP90125799 A EP 90125799A EP 0445437 B1 EP0445437 B1 EP 0445437B1
Authority
EP
European Patent Office
Prior art keywords
air
burner
accordance
filler shaft
arrangement
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.)
Expired - Lifetime
Application number
EP90125799A
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German (de)
English (en)
Other versions
EP0445437A2 (fr
EP0445437A3 (en
Inventor
Konrad Brandl
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.)
Ackermann Technische Anlagen und Maschinenbau GmbH
Original Assignee
Ackermann Technische Anlagen und Maschinenbau 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 Ackermann Technische Anlagen und Maschinenbau GmbH filed Critical Ackermann Technische Anlagen und Maschinenbau GmbH
Publication of EP0445437A2 publication Critical patent/EP0445437A2/fr
Publication of EP0445437A3 publication Critical patent/EP0445437A3/de
Application granted granted Critical
Publication of EP0445437B1 publication Critical patent/EP0445437B1/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
    • F23B90/00—Combustion methods not related to a particular type of apparatus
    • F23B90/04—Combustion methods not related to a particular type of apparatus including secondary combustion
    • F23B90/06—Combustion methods not related to a particular type of apparatus including secondary combustion the primary combustion being a gasification or pyrolysis in a reductive atmosphere
    • 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
    • F23K3/10—Under-feed arrangements
    • F23K3/14—Under-feed arrangements feeding by screw
    • 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
    • F23K3/22—Controlling thickness of fuel bed

Definitions

  • the invention relates to a burner arrangement with a combustion pipe, in the pre-arrangement of a boiler for the purpose of heating it, with a filling shaft for solids to be burned, which extends horizontally behind the filling shaft in the transverse direction and the diameter of the swirl chamber is larger than the diameter of the burnout pipe, and the swirl chamber has a jacket opening with a tangential wall area connection to the filling shaft.
  • the prior art provides so-called preliminary furnaces in a preliminary arrangement of boilers which are operated in the manner of a burner arrangement.
  • the supplied solid material is burned in the forehearth, the flame of which is directed through a combustion tube onto the combustion chamber of a downstream boiler.
  • the result is an undefined flame with a comparatively low temperature, combined with a high dust emission, ie with a comparatively high proportion of unburned parts.
  • a pre-furnace operation is therefore associated with a comparatively low efficiency. Pollution, soot and environmental pollution are great.
  • the known preliminary furnaces have a solids supply which does not allow pressure sealing on the inlet side.
  • practically only constant pressure operation with reduced draft ratios of primary and secondary air is possible in the forehearth. Fan connections are not provided and would also be ineffective due to the constant pressure operation.
  • the object of the invention is to provide a burner arrangement with a combustion tube of the type mentioned at the outset, which is simple in construction and nevertheless has good heating efficiency with low-pollutant flue gas combustion and can also be used in a variety of ways.
  • the swirl chamber is therefore designed as a hollow tube closed on one side, the concentric burnout tube adjoining the open end of the tube, which is located to the side of the jacket opening of the swirl chamber, and the jacket opening has the width of the filling shaft.
  • the burnout tube connects laterally to the swirl chamber, an axial flow component is also created during operation of the burner arrangement, which leads to a high-quality flame. This flame can then be fed into the downstream boiler at the desired location will.
  • the separation of the burnout tube is easy because there is an opening flange opposite the flame outlet, so that the swirl chamber and the burnout tube can be easily seen.
  • DE-U-8 809 659 discloses a burner arrangement with a burner tube of the type mentioned at the outset.
  • the known inflow geometry into the afterburning area is fundamentally different and, as a result, the gas behavior during combustion is different.
  • the known combustion chamber cannot be separated from the main degassing room.
  • Functionally, in the known arrangement even after a short period of operation, deposits and consequently cross-sectional constrictions in the channels can occur.
  • the design-related temperature build-up conditions also lead to very high combustion gas temperatures, which significantly increases nitrogen oxide production.
  • the known arrangement is designed for a so-called "lower edge".
  • the solid material is pressed into the combustion chamber of the filling shaft designed as a gasification chamber by means of a screw conveyor or the like, and a so-called “upper edge” is therefore set up.
  • baffles are provided in the swirling chamber, which are arranged helically on the inner circumference (with the exception of the pipe jacket opening), the screw pitch being directed in the direction of the entrance of the burnout pipe.
  • the burnout tube has a plurality of parallel individual combustion tubes, three equally distributed individual combustion tubes being provided on the circumference.
  • the solids supply device is connected directly to the filling shaft, it is particularly expedient to provide a blower with a metering device for the controlled supply of air.
  • the solids feed device preferably comprises a cellular wheel sluice or a solids screw conveyor, which opens at the bottom of the filling shaft and extends to the grate of the filling shaft.
  • an upward curved ramp is preferably provided at the end of the screw conveyor, which extends to the grate.
  • the fan is expediently connected to an air distribution chamber located in the interior of the burner arrangement, which feeds sub-air or primary air via a first air duct to the underside of the filling duct below the grate and secondary air via a second air duct close above the grate of the filling duct.
  • a section of the second air duct runs directly past the filling shaft wall, as a result of which the secondary air warms up optimally before entering the filling shaft.
  • the air distribution chamber has a connection for a third air duct, via which so-called upper air is fed to the top of the filling shaft clearly above the grate.
  • the inlet opening of the upper air into the filling shaft is located on the side and supports the passage of the combustion air to the downstream swirling chamber in such a way that a defined swirling occurs in the swirling chamber and the flue gas is likewise fed through the swirl chamber to a downstream burnout pipe.
  • the air distribution chamber has a further fourth air duct, which feeds so-called comparatively cool outlet air directly to the entrance of the burnout tube.
  • the supply line for the abovementioned outlet air cools the high-quality flame which is subjected to a rotary movement (swirl) in the burnout tube, from a flame temperature of approximately 1100 ° C. to a flame temperature of 800 ° C. This means that the flames emerging from the burner arrangement have less NO x , since the NO x formation only takes place at 600 ° C. This last-mentioned measure clearly shows an environmentally friendly, low-pollution combustion.
  • All of the aforementioned air channels for the supply of lower, secondary, upper and outlet air are at least partially provided with adjusting screws in order to meter the supply air manually or automatically.
  • the burner arrangement has in particular cube or box shape of compact cut.
  • the basic housing can have steel walls, in particular an outer heat insulation jacket being provided. Behind it is an all-round water jacket, which is connected to the downstream boiler.
  • the burner arrangement according to the invention enables, in particular, the automatic firing of wood chips and chips (carpenter material).
  • the basic housing is designed so that a different installation technique is possible.
  • the water flow of the basic housing is designed so that radiation loss from the burner arrangement is prevented.
  • the burner can be regulated quickly and is controlled via the boiler temperature. It has great flexibility with regard to the types of loading.
  • underfeed loading one is also possible Fall loading of the filling shaft from above through a feed opening with a closure arranged there.
  • the advantages and disadvantages of the different types of feed depend to a large extent on the fuel. If underfeed loading is provided, the grate in the feed area is recessed to accommodate the end of the aforementioned ramp. The firing material is pushed up here. Extending the material transport shaft beyond the grate provides optimal predrying and better loosening of the fired goods. Overall, the design of the grate depends on the ash content and the degree of slagging of the fuel.
  • the screw conveyor is in operation, which is driven by a motor which in turn is controlled by the boiler temperature.
  • the electrical ignition device is in operation for about 10 minutes.
  • the forwarded wood chips or chips begin to smolder and are pushed further on the ramp into the filling shaft or pre-carburetor room.
  • the combustion air supplied causes combustion of primary air and secondary air via the blower.
  • a level indicator or sensor in the form of a swivel lever is installed in the combustion chamber or filling shaft, which actuates a level switch to switch off the screw conveyor.
  • the burner arrangement works independently like an oil burner, and every boiler output can be heated even in the smallest low-load operation.
  • the advantage of the pre-swirling chamber lies in particular in the start-up phase of the burner arrangement, since a good burn-out can already be achieved in the start-up phase.
  • the fresh air / gas mixture is then optimally prepared for the burnout section.
  • a burner arrangement 10 is provided for automatically burning industrial wood chips and chips (carpenter material).
  • the basic housing is designed so that a different installation technique is possible.
  • the burner arrangement 10 essentially comprises a filling shaft 11 for solids to be burned, a solids supply device connected to the filling shaft 11, a swirling chamber 12 arranged downstream of the filling shaft and a side burnout tube 13 following the swirling chamber.
  • blower 14 with a metering device is provided for the controlled supply of combustion air.
  • the blower 14 is connected to an air distribution chamber 15 located in the interior of the burner arrangement, which supplies sub-air 1 through a first air duct to the underside of the filling shaft and secondary air 2 through a second air duct close above the grate 18 to the filling shaft, a section 17 of the second air duct passes directly past the vertical inner filling shaft wall 18 in order to set up optimal preheating of the secondary air.
  • the air distribution chamber 15 is also connected to a third air duct, which supplies the upper air 3 to the upper side of the filling duct 11 clearly above the grate 18 in a manner as will be described below.
  • Dosing devices are located in the individual air channels for lower air 1, secondary air 2 and upper air 3 in the form of adjusting screws 6, which allow quantity regulation by rotation.
  • metering air 5 flowing into the air distribution chamber 15 flows through the fan 14 in a controlled manner to the individual areas of the filling shaft 11 for the purpose of optimizing the combustion and flow.
  • the blower 14 ensures a so-called “overpressure operation” of the combustion chamber in particular because the filling shaft 11 is tightly connected to the solids supply device 9 on the inlet side.
  • the solids feed device 9 is designed according to the embodiment of the drawing as a so-called underfeed feed and provides for an automatic feed of the solid to be burned, industrial wood chips, chips or the like.
  • a screw conveyor 26 which is motor-driven and controlled by the boiler temperature.
  • the screw conveyor 26 is essentially in horizontal extension on the front side and extends below the grate 16 into the burner arrangement 10, closely followed by an upwardly curved ramp 27 which is guided up to a recess in the grate 16.
  • the material is pushed through the screw up to the top of the filling shaft, an electric ignition device 28 being provided under the ramp 27 being in operation in the start-up phase of the burner arrangement for approx. 10 minutes, so that the chips supplied, wood chips or the like. begins to smolder and is brought to the combustion in the filling shaft or pre-carburetor through the fan 14 supplied primary and secondary air for combustion.
  • a central level sensor 8 with a swivel lever 29 which is on the side of the filling shaft is articulated in a burner arrangement.
  • the free end of the pivot lever 29 is designed as a so-called solid float 30 such that the float moves upward when the level is increased and the pivot lever 29 is therefore pivoted.
  • the swivel lever 29 swivels upwards, the swivel lever 29 engages with a level switch 7, which switches off the screw conveyor 26. If the filling level in the filling shaft 11 falls, the screw conveyor 26 is put into operation again.
  • the level switch 7 is adjustable in height in order to set up different fill levels.
  • the height of the level transmitter 8 can also be adjusted accordingly.
  • the screw conveyor 28 is only put into operation when the boiler temperature has dropped accordingly.
  • the filling shaft 11 it is also possible for the filling shaft 11 to be loaded from above, since in principle an access opening 31 is provided on the top of the filling shaft, which extends in a dome shape upwards.
  • the upper access opening 31 has an upper closure which has an insulating layer on the underside (which is not illustrated in the drawing).
  • the burner assembly is constructed in a cube or box shape in a compact manner and has an outer heat insulation jacket 32, which is followed on the inside by a circumferential water jacket 33, which is connected via a connection 34 to a boiler (not shown).
  • the individual fuel tubes 25 are made of silicon carbide and have a small wall thickness, which reaches a high ignition temperature early on when being put into operation. Silicon carbide tolerates temperature changes and withstands aggressive gases. The component is also easy to replace.
  • the inlet 19 of the burnout tube 13 has an annular channel 23, which is illustrated in greater detail in FIGS. 5 and 6.
  • the annular duct 23 is connected on the input side to a fourth air duct, which is connected to the aforementioned air distribution chamber 15 or to the aforementioned fan 14 in order to convey comparatively cool exhaust air 4 to the inlet 19 of the burnout tube 13 during operation, namely through axially parallel outlet openings 24 which set up a passage from the ring channel 23 to the entrance 19 of the burnout tube 13.
  • the outlet air 4 is pressed out of the ring channel 23 on the outer edge of the individual fuel tubes against the flow of the fuel gas and is only active in the individual fuel tubes in such a way that the flame temperature is staggered from approx. 1100 ° C. to 800 ° C., which reduces the NO Mixing is influenced favorably, ie essentially reduces the formation of NO x .
  • the swirling chamber has a tubular casing opening 21 in the direction of the filling chute 11 approximately in the width of the filling chute, the upper horizontal edge 35 of the tubular casing opening 21 allowing tangential inlet of the fuel gas from the filling chute 11 into the swirling chamber 12.
  • the upper horizontal edge 35 lies approximately in an extension of the upper side of the vertical filling shaft wall 18.
  • a defined rotary movement or a swirl of the fuel gas is generated in the swirling chamber 12, which continues up to the individual combustion tubes 25 of the combustion tube 13 and there ensures a high-quality defined flame flow, which even after exiting the combustion tube 13 in a targeted manner can be directed to the combustion chamber of the downstream boiler.
  • the inlet 20 of the upper air 3 to the filling shaft 11 is located on the side of the burner arrangement 10 opposite the inlet 19 of the burnout tube 13, so that the upper air 3 supports the axial flow of the fuel gas in the swirling chamber towards the burnout tube 13.
  • swirling baffles 22 can be provided, which are arranged helically.
  • the screw pitch runs in the direction of the burnout tube 13 for the purpose of establishing an axial delivery component for the fuel gases flowing through.
  • a solid-fuel forced-air burner which has a chute to be loaded from below or from above.
  • the outer basic unit is water-bearing, the outer jacket has a cube shape.
  • the fuel gas is injected into the swirl chamber tangentially with an effective swirl effect.
  • the individual combustion pipes or the burnout pipe are arranged in a lateral arrangement in a coaxial extension of the Swirling chamber behind the filling shaft 11 or degassing shaft.
  • the combustion air supply is achieved with the aid of a blower 14, the air being able to be optimally fed to the individual burner arrangement points via an air distribution chamber 15, in particular in that each air point is provided with a metering throttle.

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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)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Claims (12)

  1. Dispositif d'incinération équipé d'un tube de combustion, placé à l'entrée d'une chaudière prévue pour son chauffage, comprenant une cuve (11) pour les matières solides à brûler, un dispositif d'amenée des matières solides (9) rattaché à cette cuve (11), une chambre à tourbillonnements cylindrique (12) placée après la cuve (11) et un tube d'incinération (13) rattaché à la chambre à tourbillonnements (12),cette chambre à tourbillonnements (12) étant disposée dans le sens transversal, à l'horizontale derrière la cuve (11) et son diamètre étant plus grand que celui du tube d'incinération (13) et cette chambre à tourbillonnements(12) possédant en outre une ouverture de chemise (21) avec une extrémité de paroi tangentielle par rapport à la cuve (11), caractérisé en ce que la chambre à tourbillonnements (12) a la forme d'un tube dont une extrémité axiale est fermée et l'autre est reliée de manière concentrique au tube d'incinération (13) qui lui fait suite, l'entrée (19) du tube d'incinération (13) étant disposée à la hauteur d'une des faces axiales de l'ouverture de chemise (21) qui possède la même largeur que la cuve (11).
  2. Dispositif d'incinération selon la revendication 1, caractérisé en ce que la chambre à tourbillonnements (12) présente des plaques à tourbillonnements (22) diposées hélicoïdalement sur la surface interne (à l'exception de l'ouverture de chemise) de la chambre à tourbillonnements (12), le pas de l'hélice étant dirigé vers l'entrée (19) du tube d'incinération (13).
  3. Dispositif d'incinération selon la revendication 1 ou 2, caractérisé en ce que le tube d'incinération (13) présente plusieurs tubes (25) disposés régulièrement sur le périmètre (3) et parallèles à l'axe.
  4. Dispositif d'incinération selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'un ventilateur (14) est placé du côté du dispositif d'incinération opposé au tube d'incinération (13).
  5. Dispositif d'incinération selon la revendication 4, caractérisé en ce que le ventilateur (14) possède un dispositif de dosage pour la commande de l'arrivée d'air.
  6. Dispositif d'incinération selon la revendication 4 ou 5, caractérisé en ce que le ventilateur (14) est rattaché à une chambre de distribution d'air (15) qui envoie de l'air inférieur (1) par un premier canal d'aération vers la partie inférieure de la cuve (11) sous la grille (16), et de l'air complémentaire (2) par un second canal d'aération très près et au-dessus de la grille (16) dans la cuve (11), le deuxième canal d'aération ayant une partie (17) qui passe très près, devant une des parois (18) de la cuve, et en ce que la chambre de répartition d'air (15) reliée au ventilateur (14) possède un troisième canal d'aération qui conduit de l'air supérieur (3) vers la partie supérieure de la cuve (11), et un quatrième canal apportant de l'air de sortie (4) vers l'entrée (19) du tube d'incinération (13), l'entrée (20) de l'air supérieur (3) apporté à la cuve (11) se trouvant à l'opposé de l'entrée (19) du tube d'incinération (13).
  7. Dispositif d'incinération selon la revendication 5 ou 6, caractérisé en ce que les canaux d'aération apportant l'air inférieur (1), l'air complémentaire (2), l'air supérieur (3) et l'air de sortie (4) ont, au moins en partie, des vis de régulation (6) destinées à doser l'arrivée d'air.
  8. Dispositif d'incinération selon la revendication 6 ou 7, caractérisé en ce que le quatrième canal d'aération présente, situé aux abords de l'entrée (19) du tube d'incinération (13) et entourant le tube d'incinération, un canal circulaire (23) qui possède de nombreux orifices d'évacuation (24) parallèles à l'axe et disposés sur le pourtour de l'entrée (19) du tube d'incinération (13).
  9. Dispositif d'incinération selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le dispositif d'amenée des matières solides se présente sous la forme d'une alimentation de la cuve (11) par en dessous, équipée d'une vis d'alimentation (26) ou bien d'une roue de transfert à compartiments motorisées, et en ce que, pour le fonctionnement du dispositif d'amenée des matières solides (9) un système de commande dépendant de la température de la chaudière est prévu.
  10. Dispositif d'incinération selon la revendication 9, caractérisé en ce que la vis d'alimentation (26) est essentiellement horizontale dans le sens transversal par rapport à la chambre à tourbillonnements (12) et au tube d'incinération (13), en ce qu'à l'extrémité de sortie de la vis d'alimentation (26), une rampe coudée (27) s'étend jusqu'à la grille (16) de la cuve, et en ce que l'on a prévu un dispositif d'amorçage de la combustion (28) des matières solides, installation (28) régulée par un dispositif de commande dépendant de la température de la chaudière.
  11. Dispositif d'incinération selon l'une quelconque des revendications 1 à 10, caractérisé en ce que, dans ou sur la cuve (11) se trouvent un indicateur de niveau (8) à hauteur variable et un capteur ou déclencheur de niveau (7) à hauteur variable permettant la limitation du niveau de remplissage ou du chargement en matières solides, l'indicateur de niveau (8) étant équipé d'un levier pivotant (29) dont l'extrémité libre repose sur les matières solides dans la cuve (11) comme un flotteur (30) et pouvant être mis en contact avec le déclencheur de niveau (7).
  12. Dispositif d'incinération selon l'une quelconque des revendications 1 à 11, caractérisé en ce que l'ensemble a une forme de caisse et présente un chemisage externe d'isolation thermique (32) contenant, sur la totalité de sa surface interne,une chemise d'eau (33) reliée à une chaudière.
EP90125799A 1990-03-09 1990-12-29 Agencement pour brûleur Expired - Lifetime EP0445437B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9002826U DE9002826U1 (fr) 1990-03-09 1990-03-09
DE9002826U 1990-03-09

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP93110619.9 Division-Into 1990-12-29

Publications (3)

Publication Number Publication Date
EP0445437A2 EP0445437A2 (fr) 1991-09-11
EP0445437A3 EP0445437A3 (en) 1992-01-22
EP0445437B1 true EP0445437B1 (fr) 1994-07-06

Family

ID=6851829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90125799A Expired - Lifetime EP0445437B1 (fr) 1990-03-09 1990-12-29 Agencement pour brûleur

Country Status (3)

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EP (1) EP0445437B1 (fr)
AT (1) ATE108262T1 (fr)
DE (2) DE9002826U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004038968B3 (de) * 2004-08-10 2006-05-11 Manfred Manderbach Automatisch arbeitender Hackschnitzelbrenner zum Anbau an Zentralheizungskessel mit einer Kesselleistung von 4 - 25 KW

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5138957A (en) * 1991-05-15 1992-08-18 Biotherm Energy Systems, Inc. Hot gas generation system for producing combustible gases for a burner from particulate solid organic biomass material
DE4209734C2 (de) * 1992-03-25 1994-06-09 Ackermann Tech Anlagen Masch Brenner mit Flammen-Brennrohr
DE102008021314B4 (de) 2008-04-29 2018-05-03 Harmanus Tapken Feststoffbrenner für tierischen Mist, vorzugsweise Geflügelmist
CN107869716A (zh) * 2017-04-19 2018-04-03 襄阳中和机电技术有限公司 用于水泥窑的四风道煤粉燃烧器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117876A (en) * 1981-07-18 1983-10-19 Stone Platt Fluidfire Ltd Boilers
DE3138132A1 (de) * 1981-09-25 1983-04-07 Friedrich Wilhelm Dörrenberg Wirtschaftliche Verbrennungs-Technik, 5063 Overath-Untereschbach Vorrichtung zur fliessbettentgasung von biomassen in heizungsanlagen
FR2571474B1 (fr) * 1984-10-04 1989-06-23 Dupuis Jacques Bruleur a combustible solide pour chaudiere
FR2580785B1 (fr) * 1985-04-19 1987-07-10 Pieulle Robert Avant-foyer pour bruler des combustibles solides
DE8809659U1 (fr) * 1988-07-29 1988-09-15 Wittwar, Rudi, 7265 Neubulach, De

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004038968B3 (de) * 2004-08-10 2006-05-11 Manfred Manderbach Automatisch arbeitender Hackschnitzelbrenner zum Anbau an Zentralheizungskessel mit einer Kesselleistung von 4 - 25 KW

Also Published As

Publication number Publication date
DE9002826U1 (fr) 1990-06-13
ATE108262T1 (de) 1994-07-15
DE59006370D1 (de) 1994-08-11
EP0445437A2 (fr) 1991-09-11
EP0445437A3 (en) 1992-01-22

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