EP0882931A2 - Verfahren und Vorrichtung zur Verbrennung von Holzpellets oder anderer rieselfähiger fester Brennstoffe - Google Patents
Verfahren und Vorrichtung zur Verbrennung von Holzpellets oder anderer rieselfähiger fester Brennstoffe Download PDFInfo
- Publication number
- EP0882931A2 EP0882931A2 EP98109055A EP98109055A EP0882931A2 EP 0882931 A2 EP0882931 A2 EP 0882931A2 EP 98109055 A EP98109055 A EP 98109055A EP 98109055 A EP98109055 A EP 98109055A EP 0882931 A2 EP0882931 A2 EP 0882931A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion chamber
- combustion
- collecting device
- fuels
- combustion air
- 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.)
- Granted
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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
- F23B1/00—Combustion apparatus using only lump fuel
- F23B1/30—Combustion apparatus using only lump fuel characterised by the form of combustion chamber
- F23B1/38—Combustion apparatus using only lump fuel characterised by the form of combustion chamber for combustion of peat, sawdust, or pulverulent fuel on a grate or other fuel support
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B30/00—Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B7/00—Combustion techniques; Other solid-fuel combustion apparatus
- F23B7/002—Combustion techniques; Other solid-fuel combustion apparatus characterised by gas flow arrangements
- F23B7/005—Combustion techniques; Other solid-fuel combustion apparatus characterised by gas flow arrangements with downdraught through fuel bed and grate
Definitions
- the present invention suggests a process for burning wood pellets or others free-flowing and / or pourable solid fuels in one Combustion chamber, which is characterized according to the invention, that the fuels by means of a conveyor into a Catcher are given that the combustion chamber in one Pre-combustion chamber and a post-combustion chamber divided, the Collecting device with at least one opening or one Slot is provided and the exhaust gases below the collecting device and / or to the side above the collecting device be subtracted.
- Forms in the method according to the invention an embers bed immediately after ignition of the fuels above the openings of the catcher, and the Degassing products are directed downwards or sideways aspirated.
- the device according to the invention for burning wood pellets or other pourable and / or pourable solid fuels with a combustion chamber delimited by fireproof walls and a collecting device arranged in the combustion chamber for the fuels that turn the combustion chamber into a pre-combustion chamber and divided into an afterburner and into which the fuels can be entered by means of a conveyor device is according to the invention characterized in that the collecting device is provided with one or more slots or openings and an exhaust duct provided with a blower is provided is that through the afterburner below the collecting device and / or is led to the side of the afterburner. Due to the fan, the suction is already at the start of the Ensured combustion process.
- the fuels accumulate above the Slots or openings and can pass through there, for example an ignition cartridge can be ignited electrically. Combustion residues can fall through the slots or openings and for example in a below the catcher arranged collection containers are collected.
- At a advantageous embodiment can be in or below the at least a slot or the opening of the catcher arranged at least one supply for combustion air be.
- This combustion air supply can, for example, from a tube with side and downward air outlet openings be educated.
- the catcher Slit may be provided, with a combustion air supply pipe is arranged in the slot so that between it and the slot edges two narrow passage slots surrender.
- the size of these through slots can geometric dimensions of the fuels can be adjusted.
- the Fuels automatically slide from above to the through slots and are fed directly to the ember bed.
- the cross-sectional expansion below the slots ensures an automatic diarrhea from combustion residues below, the one acting on the combustion residues Gravity through the combustion air flow into the same Direction is supported. So is a pollution of the Combustion air supply excluded.
- the falling ones Combustion residues can then also be caused by a automatic ash removal from the combustion chamber.
- the at least one combustion air supply can with be provided with an air flow sensor, so that the combustion can be optimally adjusted. There are further advantages if the at least one combustion air supply into the Area of a viewing window arranged on the combustion chamber is so that the combustion air is the inside of the lens sweeps over.
- the at least one air supply can also be arranged in a rotating manner and be provided with projections on its surface, thus an even better discharge of combustion residues is achieved.
- the device according to the invention can also be used as a boiler. You can also also the combustion chamber walls are water-bearing or from one Be surrounded by a water jacket.
- the device can then be used as a central heating device for decentralized installation in the living room with Viewing lights can be used as an alternative to oil or gas appliances or log and wood chip systems.
- wood pellets or comparable fuels can due to the exact controllability of the combustion process the disadvantages known from logs such as smoldering fire, Tar and soot formation and overheating excluded will.
- a thermal safety device as is necessary for log boilers, which enables a significant price reduction.
- Ember bed distribution can be arranged. This agitator prevents a slag formation and optimizes the combustion by the better ember bed distribution.
- the agitator can also be connected to the conveyor for the fuels.
- the conveyor can preferably be used as one with the Agitator coupled rotary valve or as another Displacement conveyor or the like may be formed. It is then only a drive motor for the agitator and the conveyor necessary.
- the device can also be used as a wall-mounted Device be trained.
- the device according to the invention can also be used as a tiled stove fireplace or fireplace insert.
- the combustion device 10 has a combustion chamber 11, in which a collecting device 12 for fuels 13, here wood pellets, is arranged.
- the fall arrester 12 divides the combustion chamber 11 into a pre-combustion chamber 11.1 and an afterburner 11.2.
- the wood pellets 13 pass over a screw conveyor 14 shown in FIG. 2 and a subsequent one Fuel slide 15 into the collecting device 12 the fuel slide 15 ends above the collecting chamber 12, so that no direct contact of the slipping fuels 13 with those already in the collecting device 12 Fuels can arise. This is the danger of a burn back safely avoided.
- the collecting device 12 has a central longitudinal slot 16 (Fig. 1) in which a Combustion air supply pipe 17 is arranged. As from Fig.
- the combustion air supply pipe 17 has several Air outlet openings directed to the side and downwards 18 on.
- the tube 17 is arranged in the slot 16 in such a way that between him and the edges of the slot 16th result in two narrow through slots 18 and 19.
- Through this Slots 18 and 19 can contain combustion residues in one Collection container 20 fall through at the bottom of device 10. Fresh fuels then slide to the slots 18 and 19 after.
- an exhaust gas duct 21 is included arranged a heat exchanger, which ensures that the Flames downward in the device 10 according to the invention form. In this way the air flow supports falling through combustion residues through the slots 18 and 19 so that they are neither the air supply pipe 17 nor the collecting device 12 can contaminate.
- Above the combustion air supply pipe 17 is an electrical igniter 22 arranged in direct contact with the fuel 13 stands and can therefore ignite unhindered.
- the combustion air supply pipe 17 is included an air flow sensor 23 and in the area of a viewing window 24 out, which on a door 25 of the combustion chamber 11th is arranged.
- the tube 17 is in the region of the viewing pane 24 provided with openings 26, flow through the air and, guided through a baffle 27, along the inside of the Disc 24 can paint. This creates an automatic Cleaning the lens 24 from the inside without Area of the disk 24 additionally introduced disk air from the outside should be.
- FIG. 3 shows a combustion device 30 with a combustion chamber 31, a collecting device 32 and an ash collecting space 33 with an ash collecting container 33.1.
- the exhaust gases are here not through the collecting device 32 but pulled off to the side above the collecting device 32.
- the afterburning space 31.2 formed thereby is simultaneous an exhaust duct 34 for the heating gases and around the ash collecting space 33 led around sideways.
- This has the advantage that the Do not remove the heating gases through ash or slag on the Collection device 32 is hindered.
- Above the fall arrester 32 is also an agitator 35, the Stirrer blades 42 for an even distribution of embers in the Ensure collecting device 32 and prevent slag formation.
- Through the shaft 36 of the stirring device 35 can also Air can be transported to the collecting device 32.
- the top of the agitator 35 is coupled to a cellular wheel sluice 37, the fuel 38 from a reservoir 39 a fuel chute 40 which conveys the fuels 38 forwards to the collecting device 32.
- a fuel chute 40 which conveys the fuels 38 forwards to the collecting device 32.
- an exhaust pipe 41 can be a hot water exchanger, not shown are connected so that the device 30 also as a central heating unit for decentralized installation in living rooms can be used.
- the walls of the combustion chamber too 31 or further or additional ones not shown here Components such as pipes or the like can carry water designed or surrounded by a water jacket.
- Fig. 4 shows a combustion device 50, which on a Living room wall 51 is suspended. Through a wall opening 52 the device 50 is supplied with combustion air. The exhaust gases are laterally via a trigger 53, for example via a Chimney or an exhaust pipe.
- the device 50 again has an agitator 54 with a cellular wheel sluice 55 is coupled.
- This is an inexpensive automatic loading of the combustion chamber 56 with fuel possible.
- the fuels preferably wood pellets, become from a storage container set up in the neighboring room 57 via a rigid or flexible tube 58, in which a transport spiral 59 is arranged, the device 50 fed.
- pneumatic conveyor system can be used.
- the putting up of the storage container including drive unit 59 in The neighboring room has the advantage that in the room of the device 50 only low delivery noise of the fuel from the reservoir 57 can be heard.
- the device 50 can also be provided with a heat exchanger.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Solid-Fuel Combustion (AREA)
Abstract
Description
- Fig. 1
- einen zentralen Längsschnitt durch eine erfindungsgemäße Verbrennungsvorrichtung;
- Fig. 2
- einen gegenüber Fig. 1 um 90° gedrehten zentralen Längsschnitt entlang der Linie II-II durch die Verbrennungsvorrichtung nach Fig. 1;
- Fig. 3
- einen zentralen Längsschnitt durch eine zweite erfindungsgemäße Verbrennungsvorrichtung;
- Fig. 4
- einen zentralen Längsschnitt durch eine wandhängende Verbrennungsvorrichtung mit Brennstoffvorratsbehälter.
Claims (20)
- Verfahren zur Verbrennung von Holzpellets oder anderer riesel- und/oder schüttfähiger fester Brennstoffe in einem Brennraum, dadurch gekennzeichnet, daß die Brennstoffe (13, 38) mittels einer Fördervorrichtung (14, 15; 37, 40; 58, 59) in eine Auffangvorrichtung (12, 32) gegeben werden, die den Brennraum (11, 31, 56) in einen Vorbrennraum (11.1, 31.1) und einen Nachbrennraum (11.2, 31.2) unterteilt, wobei die Auffangvorrichtung (12, 32) mit mindestens einer Öffnung oder einem Schlitz (16) versehen ist und die Abgase unterhalb der Auffangvorrichtung (12, 32) und/oder oberhalb der Auffangvorrichtung (12, 32) zur Seite hin abgezogen werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß unterhalb der Auffangvorrichtung (12, 32) Verbrennungsluft zugeführt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß mit den Abgasen und/oder der Strahlungswärme in ein Zentralheizungssystem einspeisbares Wasser aufgeheizt wird.
- Vorrichtung zur Verbrennung von Holzpellets oder anderer riesel- und/oder schüttfähiger fester Brennstoffe mit einem durch feuerfeste Wandungen begrenzten Brennraum (11, 31, 56) und einer im Brennraum angeordneten Auffangvorrichtung (12, 32) für die Brennstoffe (13, 38), die den Brennraum (11, 31) in einen Vorbrennraum (11.1, 31.1) und einen Nachbrennraum (11.2, 31.2) unterteilt und in die die Brennstoffe mittels einer Fördervorrichtung (14, 15; 37, 40; 58, 59) eintragbar sind, dadurch gekennzeichnet, daß die Auffangvorrichtung (12, 32) mit einem oder mehreren Schlitzen (16) oder Öffnungen versehen ist und ein mit einem Gebläse versehener Abgaskanal (21, 34) vorgesehen ist, der durch den Nachbrennraum (11.2, 31.2) unterhalb der Auffangvorrichtung (12, 32) und/oder seitlich am Nachbrennraum (11.2, 31.2) vorbei geführt ist.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Fördervorrichtung (14, 15; 37, 40) in vertikaler Richtung beabstandet oberhalb der Auffangvorrichtung (12, 32) endet.
- Vorrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß unterhalb der Auffangvorrichtung (12, 32) ein Aschesammelbehälter (20, 33.1) und/oder ein Aschesammelraum (33) angeordnet ist.
- Vorrichtung nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß im oder unterhalb des mindestens einen Schlitzes (16) oder der Öffnung der Auffangvorrichtung (12, 32) mindestens eine Verbrennungsluftzuführung (17) angeordnet ist.
- Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die mindestens eine Verbrennungsluftzuführung (17) von einem Rohr mit seitlich und nach unten gerichteten Luftaustrittsöffnungen (18) gebildet ist.
- Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Luftaustrittsöffnungen (18) schlitzförmig ausgebildet sind.
- Vorrichtung nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, daß ein Schlitz (16) in der Auffangvorrichtung (12) vorgesehen ist, wobei ein Verbrennungsluftzuführrohr (17) derart in dem Schlitz (16) angeordnet ist, daß sich zwischen ihm und den Schlitzrändern jeweils zwei schmale Durchtrittsschlitze (19, 29) ergeben.
- Vorrichtung nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, daß die mindestens eine Verbrennungsluftzuführung (17) mit einem Luftmengensensor (23) versehen ist.
- Vorrichtung nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet, daß die mindestens eine Verbrennungsluftzuführung (17) bis in den Bereich einer am Brennraum (11) angeordneten Sichtscheibe (24) geführt ist, so daß die Verbrennungsluft die Innenseite der Sichtscheibe (24) überstreicht.
- Vorrichtung nach einem der Ansprüche 7 bis 12, dadurch gekennzeichnet, daß die mindestens eine Verbrennungsluftzuführung (17) um ihre Längsachse drehbar angeordnet und auf ihrer Oberfläche mit Vorsprüngen versehen ist.
- Vorrichtung nach einem der Ansprüche 4 bis 13, dadurch gekennzeichnet, daß oberhalb der Auffangvorrichtung (12, 32) ein Rührwerk (35, 54) zur Glutbettverteilung angeordnet ist.
- Vorrichtung nach Anspruch 14, dadurch gekennzeichnet, daß durch den Schaft (36) des Rührwerks (35, 54) Verbrennungsluft zugeführt wird, die das Rührwerk (35) gleichzeitig kühlt.
- Vorrichtung nach Anspruch 14, dadurch gekennzeichnet, daß das Rührwerk (35, 54) mit der Fördervorrichtung (37, 40) für die Brennstoffe (38) verbunden ist.
- Vorrichtung nach Anspruch 15, dadurch gekennzeichnet, daß die Fördervorrichtung eine mit dem Rührwerk (35, 54) gekoppelte Zellenradschleuse (37, 55) oder einen anderen Verdrängungsförderer aufweist.
- Vorrichtung nach einem der Ansprüche 4 bis 17, dadurch gekennzeichnet, daß im Abgaskanal (21, 34) und/oder im Brennraum (31) mindestens ein Warmwassertauscher angeordnet und/oder der Abgaskanal (21, 34) an einen externen Warmwassertauscher anschließbar ist.
- Vorrichtung nach einem der Ansprüche 4 bis 18, dadurch gekennzeichnet, daß die Brennraumwandungen wasserführend oder von einem Wassermantel umgeben sind.
- Vorrichtung nach einem der Ansprüche 4 bis 19, dadurch gekennzeichnet, daß sie als ein an einer Wand (51) aufhängbares Gerät (50) ausgebildet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19723107A DE19723107A1 (de) | 1997-06-03 | 1997-06-03 | Verfahren und Vorrichtung zur Verbrennung von Holzpellets oder anderer rieselfähiger fester Brennstoffe |
DE19723107 | 1997-06-03 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0882931A2 true EP0882931A2 (de) | 1998-12-09 |
EP0882931A3 EP0882931A3 (de) | 1999-09-01 |
EP0882931B1 EP0882931B1 (de) | 2003-06-04 |
Family
ID=7831192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98109055A Expired - Lifetime EP0882931B1 (de) | 1997-06-03 | 1998-05-19 | Verfahren und Vorrichtung zur Verbrennung von Holzpellets oder anderer rieselfähiger fester Brennstoffe |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0882931B1 (de) |
AT (1) | ATE242455T1 (de) |
DE (2) | DE19723107A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000050812A1 (de) * | 1999-02-23 | 2000-08-31 | Logotherm Regelsysteme Gmbh | Feuerungsvorrichtung für biomasse, insbesondere holzpellets |
EP3489582A4 (de) * | 2016-07-25 | 2019-07-10 | Manastirli, Victor | Heizkessel |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR768790A (fr) * | 1934-02-16 | 1934-08-13 | Perfectionnements aux foyers | |
DE2735107C2 (de) * | 1977-08-04 | 1981-12-24 | Kernforschungsanlage Jülich GmbH, 5170 Jülich | Verbrennungsofen für Abfälle |
US4463687A (en) * | 1982-04-19 | 1984-08-07 | E. K. Industries, Inc. | Powered downdraft gasifier |
US4441436A (en) * | 1982-10-27 | 1984-04-10 | Takumi Noma | Solid fuel burning methods and apparatus |
US4598649A (en) * | 1985-09-03 | 1986-07-08 | Eshland Enterprises, Inc. | Particle fuel diversion structure with dome-shaped cavity |
DE4200721C2 (de) * | 1991-02-19 | 2002-11-28 | Riener Karl Stefan | Ofen für feste Brennstoffe, insbesondere für Pellets |
DE29709608U1 (de) * | 1997-06-03 | 1997-07-24 | Wodtke GmbH, 72070 Tübingen | Vorrichtung zur Verbrennung von Holzpellets oder anderer rieselfähiger fester Brennstoffe |
-
1997
- 1997-06-03 DE DE19723107A patent/DE19723107A1/de not_active Withdrawn
-
1998
- 1998-05-19 DE DE59808580T patent/DE59808580D1/de not_active Expired - Lifetime
- 1998-05-19 AT AT98109055T patent/ATE242455T1/de active
- 1998-05-19 EP EP98109055A patent/EP0882931B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
None |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000050812A1 (de) * | 1999-02-23 | 2000-08-31 | Logotherm Regelsysteme Gmbh | Feuerungsvorrichtung für biomasse, insbesondere holzpellets |
EP3489582A4 (de) * | 2016-07-25 | 2019-07-10 | Manastirli, Victor | Heizkessel |
Also Published As
Publication number | Publication date |
---|---|
ATE242455T1 (de) | 2003-06-15 |
DE19723107A1 (de) | 1998-12-10 |
EP0882931B1 (de) | 2003-06-04 |
DE59808580D1 (de) | 2003-07-10 |
EP0882931A3 (de) | 1999-09-01 |
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