EP0939276B1 - Vorrichtung in mit flüssigen Brennstoffen betriebenen Heizungsanlagen - Google Patents
Vorrichtung in mit flüssigen Brennstoffen betriebenen Heizungsanlagen Download PDFInfo
- Publication number
- EP0939276B1 EP0939276B1 EP98890160A EP98890160A EP0939276B1 EP 0939276 B1 EP0939276 B1 EP 0939276B1 EP 98890160 A EP98890160 A EP 98890160A EP 98890160 A EP98890160 A EP 98890160A EP 0939276 B1 EP0939276 B1 EP 0939276B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- combustion
- fuel
- mixing chamber
- rest
- 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
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Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C99/00—Subject-matter not provided for in other groups of this subclass
- F23C99/006—Flameless combustion stabilised within a bed of porous heat-resistant material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
- F23D11/40—Mixing tubes or chambers; Burner heads
- F23D11/402—Mixing chambers downstream of the nozzle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
- F23D11/42—Starting devices
Definitions
- the invention relates to a device in liquid fuels operated heating systems for generating a for combustion on or in at least one porous solid-fuel-air mixture, with a mixing room upstream of the erosion area on the solid for Combustion air and the fuel for which an injector is considered both with the liquid fuel, as well as with gas under pressure, namely at least part of the combustion air and / or recirculated Combustion gases feedable atomizer nozzle is formed in the open to the burn area and additionally with combustion air or The rest of the combustion air feedable mixing room one against this Burning area directed spray cloud generated.
- Heating systems of this general type are for example in the form of Central heating boilers realized.
- a fuel-air mixture is fed to a burner and by suitable fluidic measures a locally stabilized flame on the burner have obtained heating systems for which a present device is intended is the advantage that the combustion on or in the porous solid in one definable range takes place, with an improved utilization of the fuel with increased efficiency and additionally lower pollution by Exhaust gases can be obtained.
- porous solids are open-pore Ceramic body, heat-resistant filled with balls of ceramic material Containers or inserts, but also wire meshes of various shapes are used. The achievable improvements mentioned depend very much in practice largely from the correct preparation of the fuel-air mixture and the correct distribution of this fuel-air mixture during combustion, i.e.
- the burn-up area by far the mixing room, which is practically is a chamber that can be filled with air and into which the fuel can pass through or several injection nozzles are injected in the form of fine jets, whereby through the Relative movement of air and jets a division of the fuel into droplets is sought and by swirling this mixture in the further funding path homogenization is to be achieved. Nevertheless, can hardly be actually achieve homogeneous fuel-air mixtures.
- the atomizer nozzle provided opens into one version in a mixing chamber that widens conically from an air supply pipe, which is provided in the lower region of the solid.
- the air becomes exclusive fed through this air supply pipe and flows at the atomizer nozzle over to the burning area.
- complete combustion is still essentially over the inlet area guaranteed within the solid.
- One for the firebox Design variant of steam locomotives that have the same basic principles Disadvantages is a relatively flat ember bed from the mentioned solid Solids are provided and there are gaps directed upwards to the ember bed, from a blower fed air inlet pipes in which the Atomizer or spray nozzles open.
- the object of the invention is to provide a device of the type mentioned in the introduction, which a homogeneous operation of the heating system with preferred complete Combustion of the fuels, which are also processed thermally, within or Solid body guaranteed, a homogeneous preparation of the mixture allows within the mixing room and also influences the orientation and consistency of those directed against the erosion area on or in the solid Spray cloud allows.
- the task is solved in principle in that in the mixing room at a distance from the atomizer nozzle several inlets are provided for the or the rest of the combustion air, the to generate a homogeneous fuel-air mixture via this inlet or these inlets with a flow course directed at an angle of attack to the spray cloud is feedable.
- the finest particles of fuel in the spray cloud can be caused by the action of heat in addition to evaporation, so that a completely homogenized
- the fuel-air mixture actually burns.
- the heat supply is done by heat radiation from the burn-off area by supplying hotter Combustion gases during the formation of the spray cloud and / or by preheating the combustion air used to form the spray cloud.
- At a Exhaust gas recirculation ensures that even small quantities are burned incompletely Components burned and thus disposed of with low levels of pollutants. moreover you can set the spray cloud so that the spray cloud over exactly predictable Area of the erosion area is preferably evenly distributed, so that a uniform burn-up front is created in or on this solid.
- the below Air currents directed at an angle of attack to the spray cloud result in an even finer Distribution of the fuel particles and thus contribute to homogenization.
- the additional combustion air is fed via a fan if possible.
- a suction fan is attached to the extractor in the heating system, so that the additional combustion air is sucked in accordingly.
- Execution makes it easier to remove at least part of the extracted combustion gases branch off and for the formation of the spray cloud at the atomizer nozzle to use.
- the inlet (s) for the combustion air or the rest of the Combustion air directed radially and in the vicinity of that leading to the combustion area Outlet of the mixing room provided.
- a particularly high degree of uniformity is also achieved when an as circumferential annular gap of the mixing chamber wall, additional air inlet is provided.
- the air flowing in concentrically to the center creates it Area coaxially aligned cross components that form a special Allow shape of the spray cloud.
- the device according to FIGS. 1 and 2 forms an attachment part on a central heating boiler 1, of which in Fig. 2 only a water jacket 2, with this connected heat exchanger 3, supply and return line connections 4, 5 and one porous solid 6 made up of several layers were shown, in which porous solid 6 the erosion takes place during normal operation.
- An upper attachment part 7 of the boiler 1 is made up of several layers 8, 9, 10 porous, open-pored foam material provided that the better distribution of the fuel-air mixture and a partial heat shield Burning zone 6 against the mixing chamber 11 of a device according to the invention serve.
- This mixing chamber 11 has the basic shape of a bell open at the bottom is arranged above an opening 12 of a cover plate 13 of the boiler (FIG. 1). 2, a again porous part 14 engages in the lower opening of the mixing chamber 11, both here and in the embodiment according to FIG. 1 an air inlet gap between the lower edge of the mixing chamber 11 and the boiler 15 remains free.
- the mixing chamber 11 is inserted into the top part 7 or a box 16, which communicates with the gap 15 and via a line 17 with combustion stage can be loaded.
- a suction fan on the flue gas outlet line 17 is open to the outside.
- Another option is there in feeding the line 17 with air via a pressure blower.
- An atomizing nozzle 18 is inserted into the mixing chamber 11 from the apex, which via a line 20 from a pump with pressurized liquid Fuel (heating oil) and via a further inlet 21 (only shown in FIG. 1) with compressed air or with pressurized, recirculated combustion gases can be loaded and at the exit end during the Operation emits a spray cloud 22. Without additional air supply, it would have Spray cloud 22 approximately the outline indicated in FIG. 1. But because of that Annular gap 15 penetrates with radial flow direction, the spray cloud changed in shape and therefore occurs over a wide area, preferably over the entire Opening 12, in the direction of the porous bodies 6, 8, 9, 10 to. By the Impact of the additionally supplied air on the spray cloud becomes a homogeneous Fuel-air mixture achieved, moreover by the radiation from 10 ago or is preheated over the body 14 and when passing through the porous Layers 8-10 evaporated before finally burning in Zone 6.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Feeding And Controlling Fuel (AREA)
- Combustion Of Fluid Fuel (AREA)
Description
- Fig. 1
- eine erfindungsgemäße Vorrichtung im Längsschnitt und
- Fig. 2
- in kleinerem Maßstab und teilweise schematisiert eine Ausführungsvariante der Vorrichtung bei ihrem Einsatz auf einem Zentralheizungskessel.
Claims (4)
- Vorrichtung in mit flüssigen Brennstoffen betriebenen Heizungsanlagen (1) zur Erzeugung eines für die Verbrennung an bzw. in wenigstens einem porösen Festkörper (6) bestimmten Brennstoff-Luftgemisches, mit einem dem Abbrandbereich am Festkörper (6) vorgeordneten Mischraum (11) für die Verbrennungsluft und den Brennstoff, für den eine Einspritzdüse (18) als sowohl mit dem flüssigen Brennstoff, als auch mit unter Überdruck stehendem Gas, nämlich wenigstens einem Teil der Verbrennungsluft und bzw. oder zurückgeführten Verbrennungsabgasen beschickbare Zerstäuberdüse ausgebildet ist, die in dem gegen den Abbrandbereich offenen und zusätzlich mit Verbrennungsluft bzw. dem Rest der Verbrennungsluft beschickbaren Mischraum (11) eine gegen diesen Abbrandbereich gerichtete Sprühwolke (22) erzeugt, wobei der Mischraum (11) die Grundform eines z. B. glockenförmigen Rotationskörpers aufweist und die Zerstäuberdüse (18) im Scheitelbereich dieses Hohlraumes angebracht und koaxial zu diesem ausgerichtet ist, dadurch gekennzeichnet, daß im Mischraum mit Abstand von der Zerstäuberdüse (18) einen oder mehrere Einlässe (15) für die bzw. den Rest der Verbrennungsluft vorgesehen sind, die zur Erzeugung eines homogenen Brennstoff-Luftgemisches über diesen Einlaß (15) bzw. diese Einlässe mit unter einem Anstellwinkel zur Sprühwolke (22) gerichtetem Strömungsverlauf zuführbar ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der bzw. die Einlässe (15) für die Verbrennungsluft bzw. den Rest der Verbrennungsluft radial gerichtet und in der Nähe des zum Abbrandbereich führenden Auslasses (12) des Mischraumes (11) vorgesehen sind.
- Vorrichtung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß ein als umlaufender Ringspalt (15) der Mischraumwand ausgebildeter zusätzlicher Lufteinlaß vorgesehen ist.
- Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß für den bzw. die zusätzlichen Lufteinlässe (15) Abdeckungen (14) aus porösen Festkörpern vorgesehen sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT35298 | 1998-02-27 | ||
AT0035298A AT406414B8 (de) | 1998-02-27 | 1998-02-27 | Vorrichtung in mit flüssigen brennstoffen betriebenen heizungsanlagen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0939276A2 EP0939276A2 (de) | 1999-09-01 |
EP0939276A3 EP0939276A3 (de) | 2000-01-12 |
EP0939276B1 true EP0939276B1 (de) | 2003-04-09 |
Family
ID=3488345
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98890160A Expired - Lifetime EP0939276B1 (de) | 1998-02-27 | 1998-05-27 | Vorrichtung in mit flüssigen Brennstoffen betriebenen Heizungsanlagen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0939276B1 (de) |
AT (2) | AT406414B8 (de) |
DE (1) | DE59807861D1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105605571A (zh) * | 2016-01-13 | 2016-05-25 | 长沙理工大学 | 一种多孔介质阴燃式液体燃料燃烧器 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2914985B1 (fr) * | 2007-04-10 | 2009-06-12 | Atanor | Procede de pilotage d'un generateur thermique modulable en puissance |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191228477A (en) * | 1912-12-10 | 1913-10-16 | Bonecourt Surface Comb Ltd | Improvements in and relating to the Combustion of Liquid Fuel. |
US2095065A (en) * | 1933-01-25 | 1937-10-05 | Joseph W Hays | Surface combustion process |
KR890000327B1 (ko) * | 1984-04-19 | 1989-03-14 | 도오도오 기기 가부시기가이샤 | 액체연료 기화식 버어너의 연소 방법및 그 장치 |
DE4012923A1 (de) * | 1990-04-23 | 1991-10-24 | Skoog Kurt | Vorrichtung zum verbrennen fluider, insbesondere fluessiger brennstoffe, wie oel o. dgl. |
DE4420982A1 (de) * | 1994-06-16 | 1994-10-27 | Quaas Hans Rainer Dipl Ing | Flüssigbrennstoffbetriebener Kleinbrenner |
US5624252A (en) * | 1995-12-26 | 1997-04-29 | Carrier Corporation | Low no burner |
DE19650973A1 (de) * | 1996-12-09 | 1997-06-19 | Heinrich Dr Ing Koehne | Start- und Betriebsweise einer schadstoffarmen, an porösen Körpern stabilisierten Verbrennung flüssiger Brennstoffe |
ATE215678T1 (de) * | 1996-06-25 | 2002-04-15 | Heinrich Koehne | Brenner zur oberflächenverbrennung für flüssige brennstoffe und verfahren zum verbrennen |
DE19646957B4 (de) * | 1996-11-13 | 2005-03-17 | Gvp Gesellschaft Zur Vermarktung Der Porenbrennertechnik Mbh | Verfahren und Vorrichtung zur Verbrennung von Flüssigbrennstoff |
-
1998
- 1998-02-27 AT AT0035298A patent/AT406414B8/de not_active IP Right Cessation
- 1998-05-27 AT AT98890160T patent/ATE237100T1/de not_active IP Right Cessation
- 1998-05-27 EP EP98890160A patent/EP0939276B1/de not_active Expired - Lifetime
- 1998-05-27 DE DE59807861T patent/DE59807861D1/de not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105605571A (zh) * | 2016-01-13 | 2016-05-25 | 长沙理工大学 | 一种多孔介质阴燃式液体燃料燃烧器 |
CN105605571B (zh) * | 2016-01-13 | 2018-07-24 | 长沙理工大学 | 一种多孔介质阴燃式液体燃料燃烧器 |
Also Published As
Publication number | Publication date |
---|---|
ATE237100T1 (de) | 2003-04-15 |
EP0939276A3 (de) | 2000-01-12 |
ATA35298A (de) | 1999-09-15 |
AT406414B8 (de) | 2000-07-25 |
AT406414B (de) | 2000-05-25 |
EP0939276A2 (de) | 1999-09-01 |
DE59807861D1 (de) | 2003-05-15 |
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