EP1452801B1 - Heating Apparatus for Solid Bulk Fuel - Google Patents
Heating Apparatus for Solid Bulk Fuel Download PDFInfo
- Publication number
- EP1452801B1 EP1452801B1 EP04002105A EP04002105A EP1452801B1 EP 1452801 B1 EP1452801 B1 EP 1452801B1 EP 04002105 A EP04002105 A EP 04002105A EP 04002105 A EP04002105 A EP 04002105A EP 1452801 B1 EP1452801 B1 EP 1452801B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- designed
- burner
- wall
- plate
- 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
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 13
- 239000007787 solid Substances 0.000 title claims abstract description 6
- 239000000446 fuel Substances 0.000 title claims description 14
- 238000002485 combustion reaction Methods 0.000 claims abstract description 36
- 239000008188 pellet Substances 0.000 claims abstract description 4
- 239000002023 wood Substances 0.000 claims abstract description 4
- 239000003818 cinder Substances 0.000 claims abstract 7
- 239000000463 material Substances 0.000 claims abstract 2
- 238000005192 partition Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 2
- 239000011796 hollow space material Substances 0.000 claims 2
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 230000009969 flowable effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 10
- 238000001816 cooling Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 241001156002 Anthonomus pomorum Species 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- 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
- F23H11/00—Travelling-grates
- F23H11/18—Details
- F23H11/24—Removal of ashes; Removal of clinker
- F23H11/26—Removal of ashes; Removal of clinker by dumping
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- 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
- F23J1/06—Mechanically-operated devices, e.g. clinker pushers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L1/00—Passages or apertures for delivering primary air for combustion
- F23L1/02—Passages or apertures for delivering primary air for combustion by discharging the air below the fire
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
- F23L9/06—Passages or apertures for delivering secondary air for completing combustion of fuel by discharging the air into the fire bed
Definitions
- the invention relates to a device for heating a thermo-technical device, in particular a boiler, with solid, pourable fuel, in particular wood pellets, with a burner containing a arranged above an ashtray, acted upon by the fuel and combustion air combustion chamber containing an upward facing Flammaustrittsö réelle has and a bottom-side Entsorgungsluke, which is associated with a movable, provided with openings for primary air closure member, in the ashtray emptied.
- the disposal hatch associated closure member is formed as a double-walled, a cavity-containing plate, the upper wall is formed as the passage openings for the primary air containing grate plate.
- Such a device is off EP 0 945 676 A2 known.
- the closure member is formed as a solid plate, which is provided with through openings for the primary air, which is sucked in here via the ash space. This results in a cooling, coming into contact with the closure member air flow only in the region of the passage openings. There is therefore a risk that the closure member forming massive plate is thermally stressed so much that the life suffers. The consequence of this is a higher maintenance and upkeep. In addition, it may happen that the said plate warps due to their thermal stress, which may affect the mobility.
- the known arrangement thus proves to be not reliable and reliable enough.
- This object is achieved in that the distanced from the upper wall bottom wall is formed as an open, the ashtray opposite the combustion chamber occlusive closure plate, and that formed between the grate plate and the closure plate cavity than with a through a partition wall of the adjacent combustion chamber separate, communicating with air pressure chamber communicating air duct is formed, from which the passage openings for the primary air depart and which communicates with a leading to a secondary air opening flow channel.
- the combustion chamber facing the grate plate is thereby advantageously not only in the region of their passage openings for the primary air, but rinsed on its entire bottom of the passing air and reliably cooled thereof. This ensures that the temperature of the grate plate can be kept within a permissible range even with a high thermal load, which has an advantageous effect on the prevention of wear and the achievement of a long service life.
- the reliable cooling of the grate plate and an undesirable heat distortion effectively prevented, which has an advantageous effect on the reliability.
- the air flowing through the cavity absorbs heat, which advantageously results in a preheating of the air flowing to an associated secondary air outlet, which has an advantageous effect on the achievement of good afterburning and thus good economic efficiency.
- Another advantage of the measures according to the invention is the fact that here an overpressure air supply is possible and an air duct over the ashtray is unnecessary, whereby false air can be largely suppressed.
- the plate forming the closure member may expediently be designed as a slide displaceably mounted in the region of its side edges. Due to the good cooling a smooth arrangement is guaranteed. The slider can therefore be moved with relatively little force substantially noiseless. During the reciprocating movement of the slide this can be easily stripped off. The slide is therefore assigned a stationary stripping appropriate expediently.
- the burner housing is designed to be double-walled, at least in the disposal hatch, lower area, wherein the clear distance corresponds to each of the walls provided for forming the Entsorgungsluke window thickness of the closure member forming slide.
- a further advantageous measure may consist in that the burner housing has a front double-walled region adjoining the lower double-walled region, the interior of which is adjacent to that in the region of the flame outlet opening provided secondary air opening leading flow channel forms.
- the secondary air duct is integrated into the housing structure in an advantageous manner, which results in a simple construction. At the same time a reliable cooling of the front wall portion of the burner housing is achieved in this case.
- the burner housing can also be double-walled in its upper region, wherein the interior of this double-walled region communicates with the pressure chamber and leads to a further secondary air opening provided in the region of the flame outlet opening. This results in the upper wall portion of the burner housing reliable cooling.
- the upper, double-walled region can be penetrated by a feed shaft for the fuel, which is provided with air inlet openings in the region of the intermediate space of the double-walled region.
- the effluent via these air inlet openings air advantageously forms a barrier air against high-rising heat and dust particles, which increases the reliability.
- the burner housing is formed as a box-shaped steel component, which is provided with an outer mounting flange and hereby attachable to an associated mounting flange of the heat engineering device.
- the use of steel provides high strength and results in a self-supporting arrangement which can be attached to any suitable mounting flange, providing high versatility and easy interchangeability.
- FIG. 1 underlying boiler 1 contains a furnace chamber 3 arranged above an ashtray 2, above which there is a heat exchanger 4 provided for heating water.
- actuable cleaning slide 6 are arranged by means of a pivot lever.
- the burner 7 In the furnace chamber 3 projects into a burner 7, which is flanged to an associated insertion opening mounting flange 8 of the boiler 1.
- the burner 7 has a housing 9 made of interconnected steel plates, which is provided with an outer, engageable on the mounting flange 8 retaining flange 10.
- the boiler 1 may be provided with a plurality of insertion openings associated with the furnace chamber 3. In the example shown are two provided mutually opposite insertion openings, so that the burner 7 is selectively attachable to different sides of the boiler 1.
- the respectively not occupied with a burner 7 insertion opening is closed by a mounted on the associated mounting flange 8 lid 11, the outer contour and hole pattern of the outer contour and the hole pattern of the retaining flange 10 correspond.
- the ash chamber 2 extends undivided over the entire cross section of the boiler 1.
- the burner 7 is therefore, regardless of which side of the boiler 1 it is mounted, disposable in the ash compartment 2, which facilitates the transfer of the burner 7 from one side to the other ,
- the ashtray 2 is associated with an extendable ash box 12, which may be provided with a tight-fitting lid.
- the burner 7 is designed for the combustion of solid, free-flowing fuel, such as pellets consisting of wood, etc. This is fed via a chute 13, which engages with its lower end in a rear, protruding from the furnace chamber 3 region of the housing 9 of the burner 7.
- the chute 13 is connected at its upper end via a rotary valve 14 with a screw conveyor 15, via which the stored in a silo etc. fuel can be brought.
- the opposite of the outer wall of the thermal device outwardly projecting portion of the burner 7 together with auxiliary equipment is arranged protected within a subsequent to the heat-technical device 1 housing 57.
- the interior of the housing 9 of the burner 7 is, as best of FIG. 2 can be seen, divided by a partition 16 into a fire side 17 and a pressure chamber 18.
- the fire side 17 is recessed at its front, lower end to form a combustion chamber 19 trough-shaped.
- the combustion chamber 19 has a substantially upward pointing, in the furnace chamber 3 opening out the flame outlet opening 20 through which the fire can escape into the furnace chamber 3.
- a closable Entsorgungsluke 21st provided, can be dropped on the combustion residues, etc. in the underlying ash compartment 2.
- the Entsorgungsluke 21 is associated with a movable closure member which is operated prior to each firing operation for opening the Entsorgungsluke 21.
- the closure member is formed here as slidably mounted on the side edges slider 22.
- a linear motor 23 is provided, which cooperates with a connected to the slider 22, the rear wall 24 of the burner housing 9 by sweeping push and pull rod 25.
- the linear motor 23 is received on a carrier 26 abutting the retaining flange 10.
- the combustion chamber 19 can be acted upon with fuel and combustion air.
- the inserted fuel forms a resting on the slide 22 bed 29, which is ignited at the beginning of a burning process by the supply of hot air.
- a hot air blower 30 is provided, which is connected to a rear wall 24 and the pressure chamber 18 passing, in the combustion chamber 19 opening pipe 31. Once the fuel is ignited, the hot air blower 30 is passivated, the heater and the fan are switched off against each other delayed.
- the combustion air is provided by a fan 32, which is mounted on the rear wall 24 and opens into the pressure chamber 18.
- a fan 32 which is mounted on the rear wall 24 and opens into the pressure chamber 18.
- a slight draft is generated even in the passivated state.
- an outgoing from the pressure chamber 18, leading to the hot air blower 30 short-circuit line 33 is provided.
- the combustion air is supplied in the form of primary air and secondary air.
- the Primary air is supplied to the combustion chamber 19 from below via bottom-side air inlet openings 34.
- the secondary air is supplied via provided in the region of the lower and upper edges of the flame outlet opening 20 secondary air outlet openings 35.
- forming slide 22 is formed as a double-walled hollow plate whose upper wall as the air passage openings 34 for the primary air containing grate plate 36 and whose distanced from this lower wall are formed as ausbloodungslose closure plate 37.
- the air passage openings 34 may simply be formed as bores or slots, etc.
- the housing 9 of the burner 7 is formed on the bottom side two-walled, wherein the distance of the upper combustion chamber side wall 38 of the lower, asscheraum disorderen wall 39 corresponds to the thickness of the slider 22 forming the hollow plate so that the slider 22 with the closure plate 37 on the lower wall 38 and abuts with the grate plate 36 on the upper wall 39 of the bottom, double-walled portion of the housing 9.
- the walls 38, 39 are provided with superimposed, window-like recesses 40 which form the Entsorgungsluke 21 with the closure member removed.
- the bottom wall 38 extends to the rear wall 24, which may be attached thereto.
- the upper wall 39 may terminate at the partition wall 16. In the area of the pressure chamber 18, lateral guide rails 58, which are aligned with the upper wall 39, can be provided for guiding the slide 22.
- the shutter 22 forming the shutter organ is as best as possible FIG. 3 can be seen, over the entire width of the housing 9 and is guided by its lateral edges on the side walls 41 of the housing 9.
- the respective associated recess 40 bounding edge webs of the walls 38, 39 form the slider 22 associated, lateral support strips.
- the back and forth movable slide 22 is associated with a stationary stripping device 56, which is the top clears the slide 22, if this is moved under it.
- the lower end of the partition wall 16, which here forms the rear edge of the window-shaped recess 40 of the upper wall 39 of the housing-side bottom portion acts as the slide 22 associated, stationary scraper.
- the slide 22 In the FIG. 2 underlying operating position, in which the disposal hatch 21 is closed, the slide 22 is located with its front end on a housing-side front wall. The rear region of the slide 22 projects slightly into the pressure chamber 18, which receives the slide 22 in the retracted state and accordingly has a clear width corresponding to at least the sliding distance in the direction of the slider movement.
- the grate plate 36 and the closure plate 37 of the slider 22 are, as best of all FIG. 4 can be seen screwed together by connecting screws 42, the spacer elements 43 pass through.
- One of the spacer elements can, as in FIG. 2 is indicated on the right, be designed as an eyelet, which may be connected to the tension rod 25.
- the distance caused by the spacer elements 43 of the grate plate 36 of the closure plate 37 results in a cavity. This is accessible from the pressure chamber 18 ago and acted upon with air and accordingly serves as an air duct 44 through which the air inlet openings 34 of the grate plate 36 are supplied with air, which enters the combustion chamber 19 as primary air.
- the interior 45 communicates on the one hand with the air passage 44 of the slider 22 and on the other hand reaches to the front secondary air opening 35 and accordingly serves as a flow channel for the secondary air opening 35 to be supplied secondary air.
- the slider 22 is in the operating position, as already mentioned above, with its front end sealingly against the adjoining the lower wall 38, outer front wall 46 of the housing 9. This has an inclined course here.
- the closure plate 37 is like the Figures 2 and 4 can be seen, beveled in the region of its front edge according to the inclination of the front wall 46, so that there is a rich investment.
- the upper grate plate 36 of the slider 22 is at its front edge, as best of FIG. 5 can be seen, provided with a continuous over the entire width tooth contour 47. Even though the grate plate 36 starts with its front edge on the front wall 46, there is therefore a flow connection between the slide-side air duct 44 and the inner space 45 acting as a flow channel of the front, double-walled housing region.
- the air flowing through the slide-side air duct 44 cools the plates delimiting the air duct 44, in particular the upper grate plate 36, and is thereby heated itself so that preheated secondary air is made available at the secondary air opening 35 which is acted upon thereby, which results in particularly good combustion.
- FIG. 2 is how FIG. 2 can recognize further, double-walled design.
- the interior 49 of this upper, double-walled region is accessible directly from the pressure chamber 18 and leads to the secondary air opening 35 provided in the region of the rear edge of the flame outlet opening 20.
- the interior 49 of the upper double-walled area accordingly likewise functions as a flow channel for secondary air. The air flowing through the flow channel formed by the interior 49 cools the upper boundary of the flame side 17 and is thereby preheated in the desired manner.
- the lower end of the chute 13 passes through the upper, double-walled wall portion in the region behind the retaining flange 10.
- the chute 13 In the region of the interior 49 of this double-walled wall portion has the chute 13, as shown FIG. 6 it can be seen, radial Lucasteintrittsöffnun gene 50.
- the air flowing therefrom from the intermediate space 49 acts as a barrier air, which counteracts a rise of heat and dust in the chute 13.
- the Air inlet openings may be formed as holes or slots, etc. Also a version like in FIG. 2 indicated on the right would be conceivable in which the wall of the chute 13 has edge recesses.
- the side walls 41 of the box-shaped burner housing 9 are as shown FIG. 3 recognizable, single-walled.
- the side walls 41, as FIG. 3 further shows, in the area of the combustion chamber 19 on its inside armored with fireclay plates 51.
- the upper wall 39 of the bottom-side, double-walled area with a window-shaped recess 40 laterally bounding, upwardly directed angled portion 52 is provided which forms a receiving groove together with the adjacent side wall 41.
- FIG. 2 it can be seen, the frontal boundary of the combustion chamber 19 by an applied fireclay plate 53 to be armored.
- the chamotte plates 51, 53 are simply loosely inserted.
- the side walls 41 of the housing 9 formed by steel plates are bridged by the likewise formed as steel plates walls of the upper and lower or front double wall areas and by the partition wall 16. These transverse walls are suitably welded to the side walls 41. In order to simplify the welding process, the transverse walls may expediently be tapped at least partially with the side walls 41. This applies primarily to the inner walls of the upper and lower double wall areas and the partition 16.
- the rear wall 24, which acts as a mounting platform for the required auxiliary units, is suitably releasably attachable. In the example shown, the rear wall 24 carries the push and pull rod 25, the hot air blower 30, the fan 32 and a light sensor 54. This is used to monitor the combustion process in the combustion chamber 19.
- the rear wall 24 and the partition 16 are therefore with the optical Axis of the light sensor 54 aligned sight holes 55 provided.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Solid-Fuel Combustion (AREA)
- Resistance Heating (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Beheizung eines wärmetechnischen Gerätes, insbesondere eines Heizkessels, mit festem, schüttfähigem Brennmaterial, insbesondere Holzpellets, mit einem Brenner, der eine oberhalb eines Ascheraums angeordnete, mit dem Brennmaterial und mit Verbrennungsluft beaufschlagbare Brennkammer enthält, der eine nach oben weisende Flammaustrittsöffnung aufweist und über eine bodenseitige Entsorgungsluke, der ein bewegliches, mit Durchtrittsöffnungen für Primärluft versehenes Verschlussorgan zugeordnet ist, in den Ascheraum entleerbar ist.The invention relates to a device for heating a thermo-technical device, in particular a boiler, with solid, pourable fuel, in particular wood pellets, with a burner containing a arranged above an ashtray, acted upon by the fuel and combustion air combustion chamber containing an upward facing Flammaustrittsöffnung has and a bottom-side Entsorgungsluke, which is associated with a movable, provided with openings for primary air closure member, in the ashtray emptied.
Das der Entsorgungsluke zugeordnete Verschlussorgan ist als doppelwandige, einen Hohlraum enthaltende Platte ausgebildet ist, deren obere Wandung als die Durchtrittsöffnungen für die Primärluft enthaltende Rostplatte ausgebildet ist. Eine derartige Vorrichtung ist aus
Bei einer bekannten Anordnung dieser Art ist das Verschlussorgan als massive Platte ausgebildet, die mit durchgehenden Durchtrittsöffnungen für die Primärluft versehen ist, die hier über den Ascheraum angesaugt wird. Hierbei ergibt sich nur im Bereich der Durchtrittsöffnungen eine kühlende, mit dem Verschlussorgan in Kontakt kommende Luftströmung. Es besteht daher die Gefahr, dass die das Verschlussorgan bildende, massive Platte thermisch so stark belastet wird, dass die Lebensdauer leidet. Die Folge davon sind ein höher Wartungs- und Instandhaltungsaufwand. Außerdem kann es vorkommen, dass sich die genannte Platte aufgrund ihrer thermischen Beanspruchung verzieht, was die Beweglichkeit beeinträchtigen kann. Die bekannte Anordnung erweist sich demnach als nicht zuverlässig und funktionssicher genug.In a known arrangement of this type, the closure member is formed as a solid plate, which is provided with through openings for the primary air, which is sucked in here via the ash space. This results in a cooling, coming into contact with the closure member air flow only in the region of the passage openings. There is therefore a risk that the closure member forming massive plate is thermally stressed so much that the life suffers. The consequence of this is a higher maintenance and upkeep. In addition, it may happen that the said plate warps due to their thermal stress, which may affect the mobility. The known arrangement thus proves to be not reliable and reliable enough.
Hiervon ausgehend ist es daher die Aufgabe der vorliegenden Erfindung, eine Vorrichtung eingangs erwähnter Art mit einfachen und kostengünstigen Mitteln so zu verbessern, dass auch bei robusten Einsatzverhältnissen eine hohe Zuverlässigkeit und schonende Betriebsweise gewährleistet sind.On this basis, it is therefore an object of the present invention to improve a device of the kind mentioned with simple and inexpensive means so that a high reliability and gentle operation are ensured even in robust conditions.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die von der oberen Wandung distanzierte untere Wandung als öffnungslose, den Ascheraum gegenüber der Brennkammer verschließende Verschlussplatte ausgebildet ist, und dass der zwischen der Rostplatte und der Verschlussplatte ausgebildete Hohlraum als mit einem durch eine Trennwand von der benachbarten Brennkammer getrennten, mit Luft beaufschlagbaren Druckraum kommunizierender Luftkanal ausgebildet ist, von dem die Durchtrittsöffnungen für die Primärluft abgehen und der mit einem zu einer Sekundärluftöffnung führenden Strömungskanal kommuniziert.This object is achieved in that the distanced from the upper wall bottom wall is formed as an open, the ashtray opposite the combustion chamber occlusive closure plate, and that formed between the grate plate and the closure plate cavity than with a through a partition wall of the adjacent combustion chamber separate, communicating with air pressure chamber communicating air duct is formed, from which the passage openings for the primary air depart and which communicates with a leading to a secondary air opening flow channel.
Diese Maßnahmen stellen sicher, dass der Hohlraum zwischen Rostplatte und Verschlussplatte zuverlässig von Luft durchströmt wird. Die der Brennkammer zugewandte Rostplatte wird dabei in vorteilhafter Weise nicht nur im Bereich ihrer Durchtrittsöffnungen für die Primärluft, sondern auf ihrer ganzen Unterseite von der vorbeistreichenden Luft bespült und hiervon zuverlässig gekühlt. Hierdurch ist gewährleistet, dass die Temperatur der Rostplatte auch bei einer hohen thermischen Belastung in einem zulässigen Bereich gehalten werden kann, was sich vorteilhaft auf die Vermeidung von Verschleiß und die Erzielung einer langen Standzeit auswirkt. Zudem wird durch die zuverlässige Kühlung der Rostplatte auch einem unerwünschten Wärmeverzug wirksam vorgebeugt, was sich vorteilhaft auf die Funktionssicherheit auswirkt. Die den Hohlraum durchströmende Luft nimmt Wärme auf, wodurch sich in vorteilhafter Weise eine Vorwärmung der zu einem zugeordneten Sekundärluftaustritt strömenden Luft ergibt, was sich vorteilhaft auf die Erzielung einer guten Nachverbrennung und damit einer guten Wirtschaftlichkeit auswirkt. Ein weiterer Vorteil der erfindungsgemäßen Maßnahmen ist darin zu sehen, dass hier eine Überdruckluftversorgung möglich und eine Luftführung über den Ascheraum entbehrlich ist, wodurch Falschluft weitestgehend unterdrückt werden kann. Zudem ist es möglich, den Ascheraum über den ganzen Kesselquerschnitt einteilig auszubilden, was nicht nur die Entsorgung der Asche vereinfacht, sondern in vorteilhafter Weise auch eine Anbringung des erfindungsgemäßen Brenners an unterschiedlichen Seiten des wärmetechnischen Gerätes ermöglicht.These measures ensure that the cavity between grate plate and closure plate is reliably traversed by air. The combustion chamber facing the grate plate is thereby advantageously not only in the region of their passage openings for the primary air, but rinsed on its entire bottom of the passing air and reliably cooled thereof. This ensures that the temperature of the grate plate can be kept within a permissible range even with a high thermal load, which has an advantageous effect on the prevention of wear and the achievement of a long service life. In addition, the reliable cooling of the grate plate and an undesirable heat distortion effectively prevented, which has an advantageous effect on the reliability. The air flowing through the cavity absorbs heat, which advantageously results in a preheating of the air flowing to an associated secondary air outlet, which has an advantageous effect on the achievement of good afterburning and thus good economic efficiency. Another advantage of the measures according to the invention is the fact that here an overpressure air supply is possible and an air duct over the ashtray is unnecessary, whereby false air can be largely suppressed. In addition, it is possible to integrally form the ash space over the entire boiler cross-section, which not only simplifies the disposal of the ashes, but also advantageously allows attachment of the burner according to the invention on different sides of the thermal device.
Vorteilhafte Ausgestaltungen und zweckmäßige Fortbildungen der übergeordneten Maßnahmen sind in den Unteransprüchen angegeben.Advantageous embodiments and expedient developments of the higher-level measures are specified in the subclaims.
So kann die das Verschlussorgan bildende Platte zweckmäßig als im Bereich seiner Seitenkanten verschiebbar gelagerte Schieber ausgebildet sein. Aufgrund der guten Kühlung ist eine leichtgängige Anordnung gewährleistet. Der Schieber kann daher mit vergleichsweise geringer Kraft im wesentlichen geräuschlos verschoben werden. Während der hin- und hergehenden Bewegung des Schiebers kann dieser auf einfache Weise abgestreift werden. Dem Schieber ist daher zweckmäßig eine stationäre Abstreifeinrichtung zugeordnet.Thus, the plate forming the closure member may expediently be designed as a slide displaceably mounted in the region of its side edges. Due to the good cooling a smooth arrangement is guaranteed. The slider can therefore be moved with relatively little force substantially noiseless. During the reciprocating movement of the slide this can be easily stripped off. The slide is therefore assigned a stationary stripping appropriate expediently.
In weiterer Fortbildung der übergeordneten Maßnahmen ist das Brennergehäuse zumindest im der Entsorgungsluke zugeordneten, unteren Bereich doppelwandig ausgebildet, wobei der lichte Abstand der jeweils eine zur Bildung der Entsorgungsluke vorgesehene Fensterausnehmung enthaltenden Wände der Dicke des das Verschlussorgan bildenden Schiebers entspricht. Dies ermöglichet in vorteilhafter Weise eine einfache Lagerung des Schiebers und gewährleistet gleichzeitig eine zuverlässige Abdichtung des Brennraums gegenüber dem Ascheraum, so dass keine Falschluft zu befürchten ist und eine Aufwirbelung der Asche unterbleibt.In a further development of the higher-level measures, the burner housing is designed to be double-walled, at least in the disposal hatch, lower area, wherein the clear distance corresponds to each of the walls provided for forming the Entsorgungsluke window thickness of the closure member forming slide. This advantageously allows a simple storage of the slide and at the same time ensures a reliable sealing of the combustion chamber with respect to the ash space, so that no false air is to be feared and a resuspension of the ash is omitted.
Eine weitere vorteilhafte Maßnahme kann darin bestehen, dass das Brennergehäuse einen an den unteren doppelwandigen Bereich anschließenden, vorderen doppelwandigen Bereich aufweist, dessen Innenraum den zu der im Bereich der Flammaustrittsöffnung vorgesehenen Sekundärluftöffnung führenden Strömungskanal bildet. Hierbei wird in vorteilhafter Weise auch die Sekundärluftführung in den Gehäuseaufbau integriert, was eine einfache Bauweise ergibt. Gleichzeitig wird hierbei auch eine zuverlässige Kühlung des vorderen Wandbereichs des Brennergehäuses erreicht.A further advantageous measure may consist in that the burner housing has a front double-walled region adjoining the lower double-walled region, the interior of which is adjacent to that in the region of the flame outlet opening provided secondary air opening leading flow channel forms. In this case, the secondary air duct is integrated into the housing structure in an advantageous manner, which results in a simple construction. At the same time a reliable cooling of the front wall portion of the burner housing is achieved in this case.
In Fortbildung dieses Gedankens kann das Brennergehäuse auch in seinem oberen Bereich doppelwandig ausgebildet sein, wobei der Innenraum dieses doppelwandigen Bereichs mit dem Druckraum kommuniziert und zu einer im Bereich der Flammaustrittsöffnung vorgesehenen, weiteren Sekundärluftöffnung führt. Hierdurch ergibt sich auch im oberen Wandbereich des Brennergehäuses eine zuverlässige Kühlung.In further development of this idea, the burner housing can also be double-walled in its upper region, wherein the interior of this double-walled region communicates with the pressure chamber and leads to a further secondary air opening provided in the region of the flame outlet opening. This results in the upper wall portion of the burner housing reliable cooling.
Vorteilhaft kann der obere, doppelwandige Bereich von einem Zuführschacht für das Brennmaterial durchgriffen sein, der im Bereich des Zwischenraums des doppelwandigen Bereichs mit Lufteintrittsöffnungen versehen ist. Die über diese Lufteintrittsöffnungen abströmende Luft bildet in vorteilhafter Weise eine Sperrluft gegen hochsteigende Hitze und Staubteilchen, was die Betriebssicherheit erhöht.Advantageously, the upper, double-walled region can be penetrated by a feed shaft for the fuel, which is provided with air inlet openings in the region of the intermediate space of the double-walled region. The effluent via these air inlet openings air advantageously forms a barrier air against high-rising heat and dust particles, which increases the reliability.
Zweckmäßig ist das Brennergehäuse als kastenförmiges Stahl-Bauteil ausgebildet, das mit einem äußeren Befestigungsflansch versehen und hiermit an einem zugeordneten Anbauflansch des wärmetechnischen Geräts anbringbar ist. Die Verwendung von Stahl ergibt eine hohe Festigkeit und führt zu einer selbsttragenden Anordnung, die an jedem geeigneten Anbauflansch anbringbar ist, was eine hohe Vielseitigkeit sowie eine einfache Austauschbarkeit ergibt.Suitably, the burner housing is formed as a box-shaped steel component, which is provided with an outer mounting flange and hereby attachable to an associated mounting flange of the heat engineering device. The use of steel provides high strength and results in a self-supporting arrangement which can be attached to any suitable mounting flange, providing high versatility and easy interchangeability.
Weitere vorteilhafte Ausgestaltungen und zweckmäßige Fortbildungen der übergeordneten Maßnahmen sind in den restlichen Unteransprüchen angegeben und aus der nachstehenden Beispielsbeschreibung anhand der Zeichnung näher entnehmbar.Further advantageous embodiments and expedient developments of the parent measures are specified in the remaining subclaims and from the following description of the example with reference to the drawing closer.
In der nachstehend beschriebenen Zeichnung zeigen:
- Figur 1
- eine schematische Darstellung eines mit einem erfindungsgemäßen Brenner versehenen Heizkessels teilweise im Schnitt,
Figur 2- einen Längsschnitt durch den Brenner der Anordnung gemäß
Figur 1 in gegenüberFigur 1 vergrößerter Darstellung, Figur 3- einen Querschnitt durch die Anordnung gemäß
,Figur 2 - Figur 4
- den vorderen Randbereich des doppelwandigen Verschlussorgans der Anordnung gemäß
,Figur 2 Figur 5- eine Draufsicht auf den vorderen Randbereich der oberen Rostplatte der Anordnung gemäß
Figur 4 und Figur 6- einen unteren Randbereich des die obere Brennerwandung durchgreifenden Zuführschachts der Anordnung gemäß
in demgegenüber vergrößerter Darstellung.Figur 2
- FIG. 1
- a schematic representation of a boiler provided with a burner according to the invention partly in section,
- FIG. 2
- a longitudinal section through the burner of the arrangement according to
FIG. 1 in oppositeFIG. 1 enlarged view, - FIG. 3
- a cross section through the arrangement according to
FIG. 2 . - FIG. 4
- the front edge region of the double-walled closure member of the arrangement according to
FIG. 2 . - FIG. 5
- a plan view of the front edge region of the upper grate plate of the arrangement according to
FIG. 4 and - FIG. 6
- a lower edge region of the upper burner wall by cross-feed shaft of the arrangement according to
FIG. 2 in contrast, enlarged view.
Der der
In den Ofenraum 3 ragt ein Brenner 7 hinein, der an einem eine zugeordnete Einschuböffnung umfassenden Anbauflansch 8 des Heizkessels 1 angeflanscht ist. Der Brenner 7 besitzt ein aus miteinander verbundenen Stahlplatten bestehendes Gehäuse 9, das mit einem äußeren, am Anbauflansch 8 zur Anlage bringbaren Halteflansch 10 versehen ist. Der Heizkessel 1 kann mit mehreren, dem Ofenraum 3 zugeordneten Einschuböffnungen versehen sein. Im dargestellten Beispiel sind zwei aneinander gegenüberliegende Einschuböffnungen vorgesehen, so dass der Brenner 7 wahlweise auf unterschiedlichen Seiten des Heizkessels 1 anbringbar ist. Die jeweils nicht mit einem Brenner 7 belegte Einschuböffnung ist durch einen am zugeordneten Anbauflansch 8 angebrachten Deckel 11 verschlossen, dessen Außenkontur und Lochbild der Außenkontur und dem Lochbild des Halteflansches 10 entsprechen. Der Ascheraum 2 erstreckt sich ungeteilt über den ganzen Querschnitt des Heizkessels 1. Der Brenner 7 ist daher unabhängig davon, an welcher Seite des Heizkessels 1 er angebracht ist, in den Ascheraum 2 entsorgbar, was das Umsetzen des Brenners 7 von einer Seite zur anderen erleichtert. Dem Ascheraum 2 ist ein herausfahrbarer Aschekasten 12 zugeordnet, der mit einem dicht schließenden Deckel versehen sein kann.In the
Der Brenner 7 ist für die Verbrennung von festem, schüttfähigem Brennmaterial, wie aus Holz bestehenden Pellets etc., eingerichtet. Dieses wird über einen Fallschacht 13 zugeführt, der mit seinem unteren Ende in einen rückwärtigen, aus dem Ofenraum 3 herausragenden Bereich des Gehäuses 9 des Brenners 7 eingreift. Der Fallschacht 13 ist an seinem oberen Ende über eine Zellradschleuse 14 mit einer Förderschnecke 15 verbunden, über die das in einem Silo etc. gelagerte Brennmaterial herangeführt werden kann. Der gegenüber der Außenwand des wärmetechnischen Geräts nach außen vorspringende Bereich des Brenners 7 samt Hilfsaggregaten ist innerhalb einer an das wärmetechnische Gerät 1 anschließenden Einhausung 57 geschützt angeordnet.The
Der Innenraum des Gehäuses 9 des Brenners 7 ist, wie am besten aus
Der Entsorgungsluke 21 ist ein bewegbares Verschlussorgan zugeordnet, das vor jedem Brennvorgang zum Öffnen der Entsorgungsluke 21 betätigt wird. Das Verschlussorgan ist hier als an den Seitenkanten verschiebbar gelagerter Schieber 22 ausgebildet. Zum Verschieben des Schiebers 22 ist ein Linearmotor 23 vorgesehen, der mit einer mit dem Schieber 22 verbundenen, die Rückwand 24 des Brennergehäuses 9 durchgreifenden Schub- und Zugstange 25 zusammenwirkt. Der Linearmotor 23 ist an einem am Halteflansch 10 anliegenden Träger 26 aufgenommen.The
Die Brennkammer 19 ist mit Brennmaterial und Verbrennungsluft beaufschlagbar. Das über den Fallschacht 13, der mit seinem unteren Ende einen hinteren, außerhalb des Ofenraums 3 sich befindenden Bereich der feuerseitigen Oberseite des Brennergehäuses 9 durchgreift, ankommende Brennmaterial wird über eine an das untere Ende des Fallschachts 13 anschließende Rutsche 27 in die Brennkammer 19 eingeworfen, wie bei 28 angedeutet ist. Das eingeworfene Brennmaterial bildet eine auf dem Schieber 22 aufliegende Schüttung 29, die beim Beginn eines Brennvorgangs durch die Zufuhr von Heißluft entzündet wird. Hierzu ist ein Heißluftgebläse 30 vorgesehen, das an ein die Rückwand 24 und den Druckraum 18 durchsetzendes, in die Brennkammer 19 einmündendes Rohr 31 angeschlossen ist. Sobald das Brennmaterial entzündet ist, wird das Heißluftgebläse 30 passiviert, wobei die Heizung und das Gebläse gegeneinander verzögert ausgeschaltet werden. Nach der Entzündung wird die Verbrennungsluft durch einen Ventilator 32 bereitgestellt, der an der Rückwand 24 angebracht ist und in den Druckraum 18 mündet. Im Heißluftgebläse 30 wird auch im passivierten Zustand ein leichter Luftzug erzeugt. Hierzu ist eine vom Druckraum 18 abgehende, zum Heißluftgebläse 30 führende Kurzschlussleitung 33 vorgesehen.The combustion chamber 19 can be acted upon with fuel and combustion air. The over the
Zur Gewährleistung einer guten, vollständigen Verbrennung des Brennmaterials wird die Verbrennungsluft in Form von Primärluft und Sekundärluft zugeführt. Die Primärluft wird der Brennkammer 19 von unten über bodenseitige Lufteintrittsöffnungen 34 zugeführt. Die Sekundärluft wird über im Bereich des unteren und oberen Rands der Flammaustrittsöffnung 20 vorgesehene Sekundärluftaustrittsöffnungen 35 zugeführt.To ensure good, complete combustion of the fuel, the combustion air is supplied in the form of primary air and secondary air. The Primary air is supplied to the combustion chamber 19 from below via bottom-side
Zur Zuführung der Primärluft ist der das der Entsorgungsluke 21 zugeordnete Verschlussorgan, durch das die Brennkammer 19 bodenseitig vom darunter sich befindenden Ascheraum 2 getrennt wird, bildende Schieber 22 als doppelwandige Hohlplatte ausgebildet, deren obere Wandung als die Luftdurchtrittsöffnungen 34 für die Primärluft enthaltende Rostplatte 36 und deren hiervon distanzierte untere Wandung als ausnehmungslose Verschlussplatte 37 ausgebildet sind. Die Luftdurchtrittsöffnungen 34 können einfach als Bohrungen oder Schlitze etc. ausgebildet sein. Das Gehäuse 9 des Brenners 7 ist bodenseitig zweiwandig ausgebildet, wobei der Abstand der oberen, brennkammerseitigen Wand 38 von der unteren, ascheraumseitigen Wand 39 der Dicke der den Schieber 22 bildenden Hohlplatte entspricht, so dass der Schieber 22 mit der Verschlussplatte 37 an der unteren Wand 38 und mit der Rostplatte 36 an der oberen Wand 39 des bodenseitigen, doppelwandigen Bereichs des Gehäuses 9 anliegt. Die Wände 38, 39 sind mit übereinander angeordneten, fensterartigen Ausnehmungen 40 versehen, die bei entferntem Verschlussorgan die Entsorgungsluke 21 bilden. Die untere Wand 38 geht bis zur Rückwand 24 durch, die hieran befestigt sein kann. Die obere Wand 39 kann an der Trennwand 16 enden. Im Bereich des Druckraums 18 können mit der oberen Wand 39 fluchtende, seitliche Führungsleisten 58 zur Führung des Schiebers 22 vorgesehen sein.For supplying the primary air of the
Der das Verschlussorgan bildende Schieber 22 geht, wie am besten aus
In der der
An den unteren doppelwandigen Bereich des Gehäuses 9 schließt sich, wie aus
Die obere Rostplatte 36 des Schiebers 22 ist an ihrem vorderen Rand, wie am besten aus
Auch der obere Bereich des Gehäuses 9 ist, wie
Das untere Ende des Fallschachts 13 durchgreift den oberen, doppelwandigen Wandbereich im Bereich hinterhalb des Halteflansches 10. Im Bereich des Innenraums 49 dieses doppelwandigen Wandbereichs besitzt der Fallschacht 13, wie aus
Die Seitenwände 41 des kastenförmigen Brennergehäuses 9 sind, wie aus
Die durch Stahlplatten gebildeten Seitenwände 41 des Gehäuses 9 werden durch die ebenfalls als Stahlplatten ausgebildeten Wände der oberen und unteren bzw. vorderen Doppelwandbereiche sowie durch die Trennwand 16 überbrückt. Diese Querwände sind mit den Seitenwänden 41 zweckmäßig verschweißt. Um den Schweißvorgang zu vereinfachen, können die Querwände zweckmäßig zumindest teilweise mit den Seitenwänden 41 verzapft sein. Dies gilt in erster Linie für die inneren Wände der oberen und unteren Doppelwandbereiche sowie die Trennwand 16. Die Rückwand 24, die als Montageplattform für die benötigten Hilfsaggregate fungiert, ist zweckmäßig lösbar anbringbar. Im dargestellten Beispiel trägt die Rückwand 24 die Schub- und Zugstange 25, das Heißluftgebläse 30, den Ventilator 32 und einen Lichtsensor 54. Dieser dient zur Überwachung des Brennvorgangs in der Brennkammer 19. Die Rückwand 24 und die Trennwand 16 sind daher mit mit der optischen Achse des Lichtsensors 54 fluchtenden Sichtlöchern 55 versehen.The
Claims (10)
- A heating apparatus, in particular for a boiler, using solid bulk fuel, especially wood pellets, which comprise a burner (7) having above a cinder dump (2) a combustion chamber (19) to which fuel and combustion air can be supplied and which is provided with an upward directed flame outlet opening (20) and arranged for being vacated into the cinder dump (2) via a bottom side disposal hatch (21), the latter being associated with a movable closing element (22) provided with through openings (34) for the passage of primary air, with the said closing element (22) associated with the disposal hatch (21) being designed as a double-walled plate with a hollow space in between, with the upper wall thereof being designed as a grate plate (36) provided with through openings (34) for the passage of primary air, whereby the lower wall spaced from the said upper wall is designed as an opening-free closing plate (37) sealing off the cinder dump (2) from the combustion chamber (19), and the hollow space between the grate plate (36) and the closing plate (37) is designed as an air channel (44) separated from the adjacent combustion chamber (19) by a partition wall (16) and communicating with a pressure compartment (18) suppliable with air, from which air channel the through openings (34) for the passage of primary air originate and which communicates with a flow channel (45) leading to a secondary air opening (35).
- An apparatus in accordance with claim 1, whereby the closing element (22) is designed as a sliding element held for sliding adjustment in the region of its lateral edges, the said sliding element being preferably connected with a rear push rod (25) which is operable by a linear motor (23) provided in the region of the rear side of the burner.
- An apparatus in accordance with any of the preceding claims, whereby the burner (7) possesses a box shaped housing (9) which at least in the lower region associated with the disposal hatch (21) is designed as a double-walled element, with the clear distance of the walls (38, 39) of the double wall area, each of which comprises a window cutout (40) forming the disposal hatch (21), corresponding to the thickness of the sliding element forming the closing element (22).
- An apparatus in accordance with one of the preceding claims 2 or 3, whereby the sliding element forming the closing element (22) is associated with a stripping device (56) acting together with the upper surface of the said sliding element, which stripping device (56) is preferably formed by the lower lateral region of the partition wall (16) limiting the window cutout (40) of the upper wall (39).
- An apparatus in accordance with any of the preceding claims, whereby the housing (9) is provided with a front double wall area adjacent to the bottom double wall area, the interior space of the said front double wall area forming the flow channel (45) which connects the air channel (44) of the closing element (22) with the secondary air opening (35) provided in the area of the front rim of the flame outlet opening (20), with preferably at least the upper grate plate (36) of the closing element (22) exhibiting in the area of its front rim a toothed contour (47).
- An apparatus in accordance with any of the preceding claims, whereby the housing (9) in its upper area is designed as a double-walled element whose interior space (49) forms the flow channel which connects the pressure chamber (18) with a secondary air opening (35) provided in the region of the rear rim of the flame outlet opening (20), which flow channel is preferably passed through by a feed chute (13) for the fuel material which in the area of the interstice (49) is provided with at least one air inlet opening (50).
- An apparatus in accordance with any of the preceding claims, whereby the burner (7) possesses a box-shaped housing (9) designed as a steel component which is provided with a circumferential mounting flange (10) which in turn is mountable on an associated attachment flange (8) of the heating appliance and the rear wall (24) of the housing disposed outside of the heating appliance (1) is designed as a carrier for auxiliary units associated with the burner (7).
- An apparatus in accordance with any of the preceding claims, whereby the cinder dump (2) provided below the area projecting into the heating appliance (1) is an undivided element extending across and above the cross section of the heating appliance (1), and whereby the heating appliance (1) comprises at least two burner insertion openings preferably located opposite each other and encompassed by an attachment flange (8).
- An apparatus in accordance with any of the preceding claims, whereby each of the lateral walls (41) and the front wall of the combustion chamber (19) opposite the partition wall (16) are covered by a fireclay plate (51 and 53, respectively).
- An apparatus in accordance with any of the preceding claims, whereby the region of the burner (7) projecting from the heating appliance (1) is associated with a casing (57) arranged adjacent to the heating appliance (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10308695 | 2003-02-28 | ||
DE10308695A DE10308695A1 (en) | 2003-02-28 | 2003-02-28 | Device for heating a thermo-technical device with solid, free-flowing fuel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1452801A1 EP1452801A1 (en) | 2004-09-01 |
EP1452801B1 true EP1452801B1 (en) | 2010-10-13 |
Family
ID=32748104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04002105A Expired - Lifetime EP1452801B1 (en) | 2003-02-28 | 2004-01-31 | Heating Apparatus for Solid Bulk Fuel |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1452801B1 (en) |
AT (1) | ATE484712T1 (en) |
DE (2) | DE10308695A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009014010B4 (en) | 2009-03-19 | 2012-02-23 | Georg Fischer Gmbh & Co. Kg | Burner for solid, lumpy fuel |
CN104534489B (en) * | 2014-12-30 | 2017-08-25 | 红塔烟草(集团)有限责任公司 | A kind of boiler ash tube leads to grey flusher automatically |
CN112413617B (en) * | 2020-11-20 | 2022-09-27 | 西安热工研究院有限公司 | Scraper type dehydration and deslagging system suitable for thermal power plant |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3345963C2 (en) * | 1983-12-20 | 1986-07-03 | Joachim 3050 Wunstorf Prömmel | Solid fuel fireplace |
EP0562026A4 (en) * | 1990-12-17 | 1993-12-15 | Dovetech, Inc. | Balanced pressure solid fuel heating unit |
AT406413B8 (en) * | 1998-03-24 | 2000-07-25 | Windhager Zentralheizung Ag | BURNER FOR SOLID FUELS |
SE517021C2 (en) * | 2000-04-28 | 2002-04-02 | Swedish Bioburner System Ab | Device for combustion of granular solid fuel |
-
2003
- 2003-02-28 DE DE10308695A patent/DE10308695A1/en not_active Withdrawn
-
2004
- 2004-01-31 DE DE502004011764T patent/DE502004011764D1/en not_active Expired - Lifetime
- 2004-01-31 AT AT04002105T patent/ATE484712T1/en active
- 2004-01-31 EP EP04002105A patent/EP1452801B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
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DE10308695A1 (en) | 2004-09-09 |
ATE484712T1 (en) | 2010-10-15 |
EP1452801A1 (en) | 2004-09-01 |
DE502004011764D1 (en) | 2010-11-25 |
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