EP0865589A1 - Fuel atomiser - Google Patents

Fuel atomiser

Info

Publication number
EP0865589A1
EP0865589A1 EP96939038A EP96939038A EP0865589A1 EP 0865589 A1 EP0865589 A1 EP 0865589A1 EP 96939038 A EP96939038 A EP 96939038A EP 96939038 A EP96939038 A EP 96939038A EP 0865589 A1 EP0865589 A1 EP 0865589A1
Authority
EP
European Patent Office
Prior art keywords
fuel
atomizing medium
atomizer according
atomizing
fuel atomizer
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
Application number
EP96939038A
Other languages
German (de)
French (fr)
Other versions
EP0865589B1 (en
Inventor
Andreas Patz
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0865589A1 publication Critical patent/EP0865589A1/en
Application granted granted Critical
Publication of EP0865589B1 publication Critical patent/EP0865589B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • F23D11/101—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet
    • F23D11/102—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet in an internal mixing chamber
    • F23D11/103—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet in an internal mixing chamber with means creating a swirl inside the mixing chamber

Definitions

  • the invention relates to a fuel atomizer, which is preferably used in the field of high-temperature firing and in particular for heating glass melting tanks and which operates by means of a fuel and atomizer medium supply line, in particular with heavy oil as fuel and with oxygen-containing compressed air as atomizing medium, and enters from its outlet opening A mixture of fuel and atomizing medium is emitted.
  • a fuel and atomizer medium supply line in particular with heavy oil as fuel and with oxygen-containing compressed air as atomizing medium, and enters from its outlet opening A mixture of fuel and atomizing medium is emitted.
  • the fuel atomization is caused by a jet of the atomizing medium which is arranged concentrically around the axially emerging fuel jet, which mainly consists of heavy oil, and which is connected to a tangent to the main flow direction.
  • the thermal NO is generated from the N 2 of the combustion air.
  • the nitrogen content contained in the fuel primarily causes a partial formation of NO in the flame root, which is supported in the oxidation zone of the flame and in the post-reaction zone by the presence of reaction aids such as CH, CH 2 , CH 3 , H 2 O and OH becomes.
  • reaction aids such as CH, CH 2 , CH 3 , H 2 O and OH becomes.
  • the partial oxidation of the NO to N0 2 takes place in the exhaust gas stream until the flue gases cool to below 600 ° C
  • the object of the invention is to create a fuel atomizer which, in particular in the case of high-temperature firing, enables high flame root temperatures with a reduced NO x emission compared to the known atomizing devices and also enables the flame shape to be adapted to the combustion chamber geometry.
  • a fuel atomizer in which the fuel is brought together with the atomizing medium at an angle — preferably at a right angle — and thus atomizing or mixing fuel and atomizing medium in front of the spirally arranged ones on the preferably cylindrical swirl body Grooves take place in which the mixture of fuel and atomizing medium is acted upon by a pulse tangential to the main flow direction, so that the required high flame temperatures - especially in the flame root - can be achieved with even small amounts of oxygen contained in the atomizing medium.
  • the flame geometry can be adapted to the combustion chamber by varying the pitch angle of the grooves formed on the swirl body, since the flame length decreases and the flame diameter increases at the same time as the tangential pulse of the fuel mixture increases.
  • the opening angle of a free jet flame is about 20 ° and can be increased to 1 80 ° with a strong tangential impulse while the flame length is reduced.
  • the flame length can also be adapted to the combustion chamber geometry by varying the outlet opening or by changing the free flow area (sum of all groove cross-sectional areas) within the swirl body.
  • Fig. 2-8 possible embodiments of the fuel atomizer according to the invention according to Fig. 1 with differently designed outlet openings;
  • the fuel - preferably heavy oil - is supplied via the fuel feed line (1 0), in which valves, not shown, are provided and which are also on one not shown oil pump is closed, is supplied with an adjustable mass flow of heavy oil that can be pumped by preheating.
  • the burner cap (1 3) is screwed onto the atomizer medium supply line (1 1), which is arranged concentrically to the fuel supply line (10).
  • the burner cap (1 3) is used to 5) pressed against the main flow direction on the component (2) provided with a seal which is plugged onto the fuel supply line (10) between component (5) and the burner cap (1 3) there is no outlet opening, so that the atomizing medium is guided on the inside of the burner cap (1 3) before it is diverted against the main flow direction through at least one hole (1? ) drilled in the component (5) and then in the - between component (2) and (5) - preferably semicircular gap (7) - directed to the center and thus redirected back into the main flow
  • the guidance of the atomizing medium along the burner cap (1 3) and through the holes (1 2) made in the component (5) cause cooling of the components (2) and (5) and the burner cap (1 3) when the temperature of the The atomizing medium is below the ambient temperature arising during the combustion. If this cooling is not necessary, the atomizing medium can be deflected.
  • At least one hole (6) made in the component (2) preferably turns the fuel at a right angle to the main Stromungs ⁇ chtung outwards from the center to the side of the component (5) facing the center.
  • the atomizing medium emerging from the gap (7) meets the fuel at an angle — preferably the right angle.
  • the atomizing medium and fuel meet at least immediately before a spiral on a preferably cylindrical swirl body (9) arranged groove (3), di e is provided with a slope greater than zero and less than infinity.
  • the swirl body (9) the mixture of fuel and atomizing medium is acted on by a pulse lying tangential to the main flow direction. A change in the tangential pulse enables the flame diameter to be varied, at the same time using different embodiments of the space located upstream of the swirl body (e.g.
  • the emerging mixture achieves the flame temperature required for combustion by improved mixing of fuel and atomizing medium.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention relates to a fuel atomiser in which an atomiser medium is combined at an angle, via an atomiser medium feed (11) with a fuel supplied via a fuel medium feed (10). Said atomiser medium is subsequently conveyed via a groove (3) extending helically around a swirl member (9) in the direction of an outlet.

Description

Brenns t offzers tauber Beschreibung Brenns t offzers deaf description
Die Erfindung betrifft einen Brennstoffzerstauber, der vorzugsweise im Bereich der Hochtemperaturfeuerung und dabei insbesondere bei der Beheizung zum Glas- schmelzwannen eingesetzt und der mittels einer Brennstoff- und Zerstäubermedium¬ zufuhrleitung insbesondere mit Schweröl als Brennstoff und mit sauerstoffhaltiger Druckluft als Zerstaubermedium betrieben und aus dessen Austrittsöffnung ein Ge¬ misch von Brennstoff und Zerstaubermedium abgestrahlt wird Es ist bekannt, daß insbesondere bei der Beheizung von Glasschmelzwannen die Brennstoffzerstaubung durch einen um den axial austretenden, vorwiegend aus Schweröl bestehender Brennstoffstrahl konzentrisch angeordneten Strahl des Zer- staubermediums, welcher mit einem zur Hauptstromungsπchtung liegenden tangen- tialen Impuls beaufschlagt ist, erfolgt und dadurch der Brennstoff nicht nur zerstaubt sondern auch mit Sauerstoff angereichert wird Das Zerstaubermedium trifft vorwie- gend erst kurz vor dem Dusenaustπtt auf den Brennstoff strahl, so daß die Vermi¬ schung von Brennstoff und Zerstaubermedium hauptsachlich nach dem Austritt aus dem Brennstoffzerstauber —also erst innerhalb des Brennraumes— erfolgt. Insbeson¬ dere bei der Herstellung von Glasschmelzen sind hohe Temperaturen —insbesondere in der Flammenwurzel— notwendig. Die Temperatur in der Fiammenwurzel ist erheb- lieh von der dort enthaltenen Sauerstoffmenge abhangig. Zum Erreichen der erforder¬ lichen hohen FJammenwurzeltemperatur reicht der im Brennraum enthaltene Sauer¬ stoff nicht aus, so daß es notwendig ist, den Brennstoff bereits beim Austritt aus der Zerstäuberdüse mit Sauerstoff anzureichern, wodurch die im folgenden beschriebene NO.-Bildung unterstutzt wird Grundsatzlich entsteht bei allen Verbrennungen Stickstoffoxid, jedoch ist die Bildung von den jeweiligen Prozeßbedingungen abhängig. Bei allen Hochtemperaturfeuerun¬ gen — insbesondere bei Temperaturen über 1 200 °C — entsteht das thermische NO aus dem N2 der Verbrennungsluft. Der im Brennstoff enthaltene Stickstoffanteil be¬ wirkt vornehmlich in der Flammenwurzel eine anteilige NO-Bildung, die in der Oxida- tionszone der Flamme und in der Nachreaktionszone durch anwesende Reaktionshil¬ fen wie CH, CH2, CH3, H20 und OH unterstützt wird. Die teilweise Aufoxidierung des NO zu N02 erfolgt im Abgasstrom bis zur Abkühlung der Rauchgase auf unter 600°CThe invention relates to a fuel atomizer, which is preferably used in the field of high-temperature firing and in particular for heating glass melting tanks and which operates by means of a fuel and atomizer medium supply line, in particular with heavy oil as fuel and with oxygen-containing compressed air as atomizing medium, and enters from its outlet opening A mixture of fuel and atomizing medium is emitted. It is known that, in particular when heating glass melting tanks, the fuel atomization is caused by a jet of the atomizing medium which is arranged concentrically around the axially emerging fuel jet, which mainly consists of heavy oil, and which is connected to a tangent to the main flow direction. tial impulse occurs, and as a result the fuel is not only atomized but also enriched with oxygen off jet, so that the mixing of fuel and atomizing medium takes place mainly after exiting the fuel atomizer — thus only within the combustion chamber. In particular in the production of glass melts, high temperatures — especially in the flame root — are necessary. The temperature in the flame root is largely dependent on the amount of oxygen it contains. To reach the required high flame root temperature, the oxygen contained in the combustion chamber is not sufficient, so that it is necessary to enrich the fuel with oxygen as soon as it emerges from the atomizer nozzle, which in turn supports the NO formation described below nitrogen oxide in all burns, however, the formation depends on the respective process conditions. In all high-temperature furnaces - especially at temperatures above 1 200 ° C - the thermal NO is generated from the N 2 of the combustion air. The nitrogen content contained in the fuel primarily causes a partial formation of NO in the flame root, which is supported in the oxidation zone of the flame and in the post-reaction zone by the presence of reaction aids such as CH, CH 2 , CH 3 , H 2 O and OH becomes. The partial oxidation of the NO to N0 2 takes place in the exhaust gas stream until the flue gases cool to below 600 ° C
ORIGINAL UNTERLAGEN Aufgabe der Erfindung ist die Schaffung eines Brennstoffzerstäubers, der insbeson¬ dere bei der Hochtemperaturfeuerung hohe Flammenwurzeltemperaturen mit einer gegenüber den bekannten Zerstäubungsvorrichtungen reduzierten NOx-Emission und zudem eine Anpassung der Flammenform an die Brennraumgeometrie ermöglicht. Diese Aufgabe wird durch einen Brennstoffzerstauber gelöst, in dem der Brennstoff unter einem Winkel —vorzugsweise einem rechten Winkel— mit dem Zerstäuberme¬ dium zusammengeführt und so eine Zerstäubung bzw. Vermischung von Brennstoff und Zerstäubermedium vor den auf dem vorzugsweise zylindrischen Drallkörper be¬ findlichen spiralförmig angeordneten Nuten erfolgt, in denen das Gemisch aus Brenn- stoff und Zerstäubermedium mit einem zur Hauptströmungsrichtung tangentialen Impuls beaufschlagt wird, so daß bereits mit geringen im Zerstäubermedium enthal¬ tenen Mengen an Sauerstoff die erforderlichen hohen Flammentemperaturen — insbesondere in der Flammenwurzel— erreicht werden.ORIGINAL DOCUMENTS The object of the invention is to create a fuel atomizer which, in particular in the case of high-temperature firing, enables high flame root temperatures with a reduced NO x emission compared to the known atomizing devices and also enables the flame shape to be adapted to the combustion chamber geometry. This object is achieved by a fuel atomizer in which the fuel is brought together with the atomizing medium at an angle — preferably at a right angle — and thus atomizing or mixing fuel and atomizing medium in front of the spirally arranged ones on the preferably cylindrical swirl body Grooves take place in which the mixture of fuel and atomizing medium is acted upon by a pulse tangential to the main flow direction, so that the required high flame temperatures - especially in the flame root - can be achieved with even small amounts of oxygen contained in the atomizing medium.
Eine Anpassung der Flammengeometrie an den Brennraum ist durch Variation des Steigungswinkels der auf dem Drallkörper aufgebrachten Nuten möglich, da mit stei¬ gendem tangentialen Impuls des Brennstoffgemisches die Flammenlänge ab- und gleichzeitig der Flammendurchmesser zunimmt. Nach VDI-Bericht Nr. 21 1 , 1 974, Seite 60, beträgt der Öffnungswinkel einer Freistrahlflamme etwa 20° und kann mit einem starken tangentialen Impuls bis auf 1 80°, bei gleichzeitig verkürzter Flammen- länge vergrößert werden. Die Flammenlänge kann zudem bei gleichbleibenden Mas¬ senströmen durch Variation der Austrittsöffnung bzw. durch eine Veränderung der freien Strömungsfläche (Summe alle Nutenquerschnittsfiächen) innerhalb des Drall¬ körpers an die Brennraumgeometrie angepaßt werden.The flame geometry can be adapted to the combustion chamber by varying the pitch angle of the grooves formed on the swirl body, since the flame length decreases and the flame diameter increases at the same time as the tangential pulse of the fuel mixture increases. According to VDI report No. 21 1, 1 974, page 60, the opening angle of a free jet flame is about 20 ° and can be increased to 1 80 ° with a strong tangential impulse while the flame length is reduced. With constant mass flows, the flame length can also be adapted to the combustion chamber geometry by varying the outlet opening or by changing the free flow area (sum of all groove cross-sectional areas) within the swirl body.
Eine Ausführungsform der vorliegenden Erfindung ist in den Zeichnungen dargestellt. Es zeigt:An embodiment of the present invention is shown in the drawings. It shows:
Fig.1 eine mögliche Ausführungsform des erfindungsgemäßen Brennstoffzerstäu¬ bers;1 shows a possible embodiment of the fuel atomizer according to the invention;
Fig.2-8 mögliche Ausführungsformen des erfindungsgemäßen Brennstoffzerstäu¬ bers gemäß Fig.1 mit unterschiedlich gestalteten Austrittsöffnungen; In einem in Fig1 dargestellten, auf die Brennstoffzufuhrleitung aufgesteckten und aus zwei Bauteilen (2) und (5) bestehenden Brennstoffzerstauber wird der Brennstoff — vorzugsweise Schweröl — über die Brennstoffzuleitung (1 0) , in der nicht dargestellte Ventile vorgesehen sind und die an einer ebenfalls nicht dargestellten Ölpumpe ange- schlössen ist, mit einem einstellbaren, durch Vorheizung pumpfahigen Massenstrom von Schweröl versorgt Auf die konzentrisch zu der Brennstoffzuleitung (10) ange ordnete Zerstäubermediumzufuhrleitung ( 1 1 ) wird die Brennerkappe ( 1 3) aufge¬ schraubt Mit der Brennerkappe (1 3) wird Bauteil (5) entgegen der Hauptstromungs richtung auf das mit einer Dichtung versehene Bauteil (2) gepreßt, das auf die Brenn Stoffzufuhrleitung (10) aufgesteckt ist Zwischen Bauteil (5) und der Brennerkappe ( 1 3) befindet sich keine Austrittsoff nung, so daß das Zerstaubermedium an der In nenseite der Brennerkappe ( 1 3) gefuhrt wird, bevor es durch mindestens eine im Bauteil (5) eingebrachte Bohrung ( 1 ?) entgegen der Hauptstromungsnchtung umge- lenkt und anschließend in dem zwischen Bauteil (2) und (5) befindlichen — vorzugsweise halbkreisförmigen Spalt (7) — zum Zentrum geleitet und somit wieder in Hauptstromungsπchtung umgelenkt wirdFig. 2-8 possible embodiments of the fuel atomizer according to the invention according to Fig. 1 with differently designed outlet openings; In a fuel atomizer shown in FIG. 1, which is plugged onto the fuel supply line and consists of two components (2) and (5), the fuel - preferably heavy oil - is supplied via the fuel feed line (1 0), in which valves, not shown, are provided and which are also on one not shown oil pump is closed, is supplied with an adjustable mass flow of heavy oil that can be pumped by preheating. The burner cap (1 3) is screwed onto the atomizer medium supply line (1 1), which is arranged concentrically to the fuel supply line (10). The burner cap (1 3) is used to 5) pressed against the main flow direction on the component (2) provided with a seal which is plugged onto the fuel supply line (10) between component (5) and the burner cap (1 3) there is no outlet opening, so that the atomizing medium is guided on the inside of the burner cap (1 3) before it is diverted against the main flow direction through at least one hole (1? ) drilled in the component (5) and then in the - between component (2) and (5) - preferably semicircular gap (7) - directed to the center and thus redirected back into the main flow
Die Fuhrung des Zerstaubermediums entlang der Brennerkappe ( 1 3) und durch die im Bauteil (5) eingebrachten Bohrungen ( 1 2) bewirken eine Kühlung der eingesetzten Bauteile (2) und (5) sowie der Brennerkappe ( 1 3), wenn die Temperatur des Zerstau bermediums unterhalb der bei der Verbrennung entstehenden Umgebungstemperatur liegt Ist diese Kühlung nicht notwendig, so kann auf eine Umlenkung des Zerstau¬ bermediums verzichtet werden Durch mindestens eine im Bauteil (2) eingebrachte Bohrung (6) wird der Brennstoff vorzugsweise in einem rechten Winkel zur Haupt stromungsπchtung vom Zentrum hin nach außen auf die dem Zentrum zugewandte Seite von Bauteil (5) gefuhrt Das aus dem Spalt (7) austretende Zerstaubermedium trifft unter einem Winkel —vorzugsweise dem rechten Winkel— auf den Brennstoff Das Zusammentreffen von Zerstaubermedium und Brennstoff erfolgt unmittelbar vor mindestens einer spiralförmigen auf einem vorzugsweise zylindrischen Drallkorper (9) angeordneten Nut (3), die mit einer Steigung großer null und kleiner unendlich verse hen ist Im Drallkorper (9) wird das Gemisch aus Brennstoff und Zerstaubermedium mit einem tangential zur Hauptstromungsrichtung liegenden Impuls beaufschlagt Eine Veränderung des tangentialen Impulses ermöglicht eine Variation des Flammen¬ durchmessers, gleichzeitig kann mit unterschiedlichen Ausfuhrungsformen des stromauf des Drallkorpers gelegenen Raumes (z B Laval-Duse ( 1 ), Diffusor (1 6), Du se ( 15) oder ein nicht bis zur Austπttsoffnung reichender Drallkorper (9) mit einem gegenüber dem Außendurchmesser des Drallkorpers verkleinerten- ( 1 8), vergroßer ten- (1 7) oder gleichen Austrittsdurchmesser ( 14)) der axiale Impuls des Brenn Stoffstrahls und somit auch die Flammenlange beeinflußt werden Bei der Verbrennung erreicht das austretende Gemisch durch eine verbesserte Vermi¬ schung von Brennstoff und Zerstaubermedium die bei der Verbrennung erforderliche Flammentemperatur — insbesondere in der Flammenwurzel — bereits mit deutlich re¬ duzierten Sauerstoffanteilen, wodurch die verminderte N0X Emission ermöglicht wird Eine Anpassung der Flammenform an die Brennraumgeometrie erfolgt durch Variation des tangential zur Hauptstromungsπchtung liegenden Impulses, der vom Steigungs Winkel der auf dem Drallkorper befindlichen Nut bestimmt wird Unterschiedliche Bauformen des stromauf vom Drallkorper gelegenen Raumes ermöglichen eine An passung der Flammenlange durch Variation des axialen Brennstoffstrahlimpulses ebenso wie ein durch die Austπttsoffnung in den Brenπraum hineinragender Drallkor¬ per The guidance of the atomizing medium along the burner cap (1 3) and through the holes (1 2) made in the component (5) cause cooling of the components (2) and (5) and the burner cap (1 3) when the temperature of the The atomizing medium is below the ambient temperature arising during the combustion. If this cooling is not necessary, the atomizing medium can be deflected. At least one hole (6) made in the component (2) preferably turns the fuel at a right angle to the main Stromungsπchtung outwards from the center to the side of the component (5) facing the center. The atomizing medium emerging from the gap (7) meets the fuel at an angle — preferably the right angle. The atomizing medium and fuel meet at least immediately before a spiral on a preferably cylindrical swirl body (9) arranged groove (3), di e is provided with a slope greater than zero and less than infinity. In the swirl body (9), the mixture of fuel and atomizing medium is acted on by a pulse lying tangential to the main flow direction. A change in the tangential pulse enables the flame diameter to be varied, at the same time using different embodiments of the space located upstream of the swirl body (e.g. Laval nozzle (1), diffuser (1 6), du se (15) or a swirl body (9) that does not reach the outlet opening with a smaller diameter than the outer diameter of the swirl body (1 8 ), larger ten- (1 7) or the same outlet diameter (14)) the axial impulse of the fuel jet and thus also the flame length can be influenced. During combustion, the emerging mixture achieves the flame temperature required for combustion by improved mixing of fuel and atomizing medium. in particular in the flame root - already considerably re¬ duced amounts of oxygen, whereby the reduced N0 X emissions enables an adjustment of the flame shape to the combustion chamber geometry by varying the tangentially located to Hauptstromungsπchtung pulse is determined by the incline angle of the groove located on the Drallkorper Different designs of the space located upstream from the swirl body enable the flame length to be adapted by varying the axial fuel jet pulse, as well as a swirl body projecting through the opening into the combustion chamber

Claims

Patentansprüche claims
1 . Brennstoffzerstauber mit einem Körper und mit in dem Körper ausgebildeten Lei¬ tungen für Brennstoff und Zerstäubermedium sowie eine Austrittsöffnung für ein Gemisch aus Brennstoff und Zerstäubermedium, dadurch gekennzeichnet, daß die Zerstäubermedium-Zuführleitung (1 1 , 4, 1 2, 7) und die Brennstoffzufuhrlei¬ tung ( 1 0, 6) in Hauptströmungsrichtung vor einem Drallkörper (9) unter einem Winkel aufeinander treffen und gemeinsam in mindestens eine, zur Aufnahme und Weiterlei- tung des Gemisches aus Brennstoff und Zerstäubermedium in Richtung der Aus¬ trittsöffnung, auf dem Drallkörper (9) ausgebildete, spiralförmig umlaufenden Nut (3) eintritt.1 . Fuel atomizer with a body and with lines formed in the body for fuel and atomizing medium and an outlet opening for a mixture of fuel and atomizing medium, characterized in that the atomizing medium supply line (1 1, 4, 1 2, 7) and the fuel supply line ¬ device (1 0, 6) in the main flow direction in front of a swirl body (9) meet at an angle and together in at least one, for receiving and forwarding the mixture of fuel and atomizing medium in the direction of the outlet opening, on the swirl body ( 9) formed, spiral-shaped groove (3) occurs.
2. Brennstoffzerstauber nach Anspruch 1 dadurch gekennzeichnet, daß in dem Körper mindestens eine Leitung der Zerstäubermediumzufuhr (1 1 , 4, 1 2, 7) ausgebildet ist die wenigstens die minimale Streckenlänge zur Vermischung von Zerstäubermedium und Brennstoff aufweist.2. Fuel atomizer according to claim 1, characterized in that in the body at least one line of the atomizing medium supply (1 1, 4, 1 2, 7) is formed which has at least the minimum path length for mixing atomizing medium and fuel.
3. Brennstoffzerstauber nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Zerstäubermedium-Zuführleitung (4, 7, 1 1 , 1 2) wenigstens in einem Strek- kenabschnitt (4, 1 2) so ausgebildet ist, daß das Zerstäubermedium auf die anliegen¬ den Teile der Körper (1 3, 2, 5) eine kühlende Wirkung ausübt.3. Fuel atomizer according to claim 1 or 2, characterized in that the atomizing medium supply line (4, 7, 1 1, 1 2) is formed at least in a stretch section (4, 1 2) so that the atomizing medium rest on the ¬ the parts of the body (1 3, 2, 5) exerts a cooling effect.
4. Brennstoffzerstauber nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Zerstäubermediumzuführung (1 1 , 4, 1 2, 7) wenigstens in einem Streckenab¬ schnitt (1 2) so ausgebildet ist, daß die Strömung entgegen der Hauptströmungsrich- tung gerichtet ist. 4. Fuel atomizer according to one of claims 1 to 3, characterized in that the atomizing medium supply (1 1, 4, 1 2, 7) is designed at least in one section of section (1 2) such that the flow against the main flow direction is directed.
5 Brennstoffzerstauber nach Anspruch 4 dadurch gekennzeichnet, daß dem Streckenabschnitt ( 1 2) der Zerstäubermediumzufuhrleitung ein kreisbogen formiger Streckenabschnitt (7) folgt, der in einem Streckenabschnitt (6) Brennstoff zufuhrleitung (6, 1 0) mundet5 fuel atomizer according to claim 4, characterized in that the route section (1 2) of the atomizing medium supply line is followed by an arcuate route section (7) which feeds fuel line (6, 1 0) in a route section (6)
6 Brennstoffzerstauber nach Anspruch 5, dadurch gekennzeichnet, daß der Streckenabschnitt (6) unter einem Winkel zur Hauptstromungsnchtung ver lauft6 fuel atomizer according to claim 5, characterized in that the route section (6) runs at an angle to the main flow direction
7 Brennstoffzerstauber nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die auf dem Drallkorper (9) spiralförmig umlaufende Nut (3) in Abhängigkeit von der Art des Brennstoffes und des Zerstaubermediums und/oder von der Zerstauber- leistung und/oder der Brennraumgeometrie eine Steigung großer null und kleiner un endlich aufweist7 fuel atomizer according to one of the preceding claims, characterized in that on the swirl body (9) spiral groove (3) depending on the type of fuel and the atomizing medium and / or the atomizing power and / or the combustion chamber geometry an incline large zero and smaller and finally has
8 Brennstoffzerstauber nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß in Hauptstromungsnchtung hinter der spiralförmig umlaufenden Nut (3) und vor der Austπttsoffnung ein Raum ( 1 , 1 4, 1 5, 1 6, 1 7, 1 8) ausgebildet ist, mit dessen Gestaltung die Strömung des Brennstoff-Zerstaubermediumgemisches manipulierbar8 fuel atomizer according to any one of the preceding claims, characterized in that a space (1, 1 4, 1 5, 1 6, 1 7, 1 8) is formed in the main flow direction behind the spiral groove (3) and before the opening the design of which can manipulate the flow of the fuel-atomizing medium mixture
9. Brennstoffzerstauber nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Drallkorper (9) aus der Austπttsoffnung in den Brennraum hinein ragt 9. Fuel atomizer according to one of claims 1 to 7, characterized in that the swirl body (9) protrudes from the opening in the combustion chamber
EP96939038A 1995-11-15 1996-11-14 Fuel atomiser Expired - Lifetime EP0865589B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19542530A DE19542530C2 (en) 1995-11-15 1995-11-15 Fuel atomizers
DE19542530 1995-11-15
PCT/EP1996/004991 WO1997018414A1 (en) 1995-11-15 1996-11-14 Fuel atomiser

Publications (2)

Publication Number Publication Date
EP0865589A1 true EP0865589A1 (en) 1998-09-23
EP0865589B1 EP0865589B1 (en) 2002-01-16

Family

ID=7777499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96939038A Expired - Lifetime EP0865589B1 (en) 1995-11-15 1996-11-14 Fuel atomiser

Country Status (5)

Country Link
EP (1) EP0865589B1 (en)
AT (1) ATE212114T1 (en)
DE (2) DE19542530C2 (en)
ES (1) ES2173327T3 (en)
WO (1) WO1997018414A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB516724A (en) * 1938-05-30 1940-01-10 Garner Submicron Atomizers Ltd Improvements in or relating to liquid fuel burners or liquid atomisers
DE1734300U (en) * 1955-05-05 1956-11-22 Balcke Ag Maschbau TWO-STAGE OIL DUST BURNER.
US3880571A (en) * 1973-07-26 1975-04-29 Trw Inc Burner assembly for providing reduced emission of air pollutant
DE3202105C2 (en) * 1982-01-23 1985-08-08 Karl-Heinz 5600 Wuppertal Frickel Burners, in particular for glass melting furnaces
JPS61168711A (en) * 1985-01-18 1986-07-30 Babcock Hitachi Kk Two-fluid atomizer nozzle
DE29518060U1 (en) * 1995-11-15 1996-01-11 Patz Andreas Dipl Ing Fuel atomizers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9718414A1 *

Also Published As

Publication number Publication date
ES2173327T3 (en) 2002-10-16
EP0865589B1 (en) 2002-01-16
DE59608607D1 (en) 2002-02-21
DE19542530C2 (en) 1998-08-27
ATE212114T1 (en) 2002-02-15
WO1997018414A1 (en) 1997-05-22
DE19542530A1 (en) 1997-05-22

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