EP0598189B1 - Pulverizer for an oil burner - Google Patents

Pulverizer for an oil burner Download PDF

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Publication number
EP0598189B1
EP0598189B1 EP93112693A EP93112693A EP0598189B1 EP 0598189 B1 EP0598189 B1 EP 0598189B1 EP 93112693 A EP93112693 A EP 93112693A EP 93112693 A EP93112693 A EP 93112693A EP 0598189 B1 EP0598189 B1 EP 0598189B1
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EP
European Patent Office
Prior art keywords
bores
outlet
nozzle head
mixing chamber
outlet bores
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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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EP93112693A
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German (de)
French (fr)
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EP0598189A1 (en
Inventor
Rolf Oppenberg
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Babcock Kraftwerkstechnik GmbH
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Babcock Omnical Industriekessel GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • 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

Definitions

  • the invention relates to an atomizer for an oil burner the features of the preamble of claim 1.
  • So-called Y atomizing nozzles are used to atomize heating oil used (US-PS 24 80 459), in which Atomizing steam at a constant pressure of about 10 to 11 bar slightly overheated via several nozzle bores from the Atomizer head into the firebox at a certain angle is blown. This atomizing vapor is released before common outlet holes of somewhat larger diameter Y-like associated with the heating oil. It will Heating oil into fine by the expanding atomizing steam Droplets torn.
  • Heating oil known as premix nozzles. With these nozzles the heating oil enters a mixing chamber through a central pipe into the approximately tangential individual holes for guidance flow of steam. The vapor states are comparable to those in the Y nozzle. In the mixing chamber, the heating oil is mixed with the Steam swirls and passes through individual outlet bores at a certain angle into the firebox.
  • WO-A-92/0412 describes an atomizer for atomizing one unspecified liquid known.
  • the atomizer is a first chamber of constant Cross-section formed with the one to be atomized Liquid-carrying line is connected. From this chamber tubes of constant cross section assume that Lead outlet openings. These pipes penetrate a second one chamber formed in the nozzle head with a feed a gaseous atomizing medium is connected. The pipes are there where they are led through the second chamber Provide openings through which the atomizing medium into the Pipes penetrates. The liquid continues to be via channels receiving first chamber 18 with the second chamber for the Atomization medium connected, so that a double atomization is made possible. Because of his education, the well-known Atomizers are more suitable for low-viscosity liquids atomize.
  • the invention has for its object the generic Design atomizers so that the atomization quality for improves the combustion of heavy heating and special oils becomes.
  • the atomizing vapor blown in staggered so that a double atomization takes place once in the mixing chamber and again before the exit from the Y-shaped exit bores the mixing chamber.
  • the staggered blowing can be used according to claim 4 become a part of the atomizing vapor as cooling and Barrier steam between the releasably connected and the parts exposed to very hot gas atmosphere of the combustion chamber on the atomizer head. Through this cooling a Loosening of the pressed parts and thus a Oil leakage prevented.
  • the atomizer shown belongs to a burner Combustion of liquid fuel, especially for Low pollutant combustion of heavy heating or special oil. He consists of two feed lines 1, 2, one of which Supply of the heating oil and the other of the supply of a steam or gaseous atomizing medium such as water vapor or air serves.
  • the two feed lines 1, 2 are of one outer protective tube 3 surrounded by a bottom 4 with a Nozzle head 5 is connected.
  • the nozzle head 5 consists of a Head piece 6, an intermediate plate 7 and a cap 8, the tight abutting against each other by a union nut 9 are connected.
  • the union nut 9 engages with one Internal thread 10 in a mounted on the head piece 6 Male thread.
  • the union nut 9 is with a holding claw 11 provided that with a tightened union nut 9 on one the cap 8 rests on the molded shoulder.
  • the head piece 6 Through the head piece 6 are in One or more through holes 13 are guided in the longitudinal direction, which connect the chamber 12 with an annular space 14 which at the Contact surface between the head piece 6 and the intermediate plate 7 is formed.
  • the supply line 1 carrying the heating oil is passed through the chamber 12 into the head piece 6 and opens into a channel 15 penetrating the head piece 6.
  • the intermediate plate 7 and the cap 8 enclose one Mixing chamber 16, which is centrally located in the intermediate plate 7 attached through opening 17 with the fuel oil leading Channel 15 is connected.
  • the Mixing chamber 16 is provided with a plurality of outlet bores 18 which are guided obliquely through the cap 8.
  • Each exit hole 18 contains two sections of different cross-section, whereby the larger cross section is on the outlet side.
  • the heating oil flowing from the channel 15 into the mixing chamber 16 is through the entering from the inlet holes 19 Atomizing steam swirls and then emerges from the Exit bores 18 out. Before leaving the Outlet bores 18, the heating oil treated in this way atomization steam supplied from the oblique bores 22 atomized once.
  • axial bores 20 and Oblique bores 22 go out of transverse bores 23, which in annular edge recesses 24 end.
  • the edge recesses 24 are on the outside in the intermediate plate 7 and the cap 8th cut. Part of the Atomized steam branched off and in as cooling or barrier steam guided the annular gap between the intermediate plate 7 and Cap 8 of the nozzle head 5 and the union nut 9 and between the cap 8 and the holding claw 11 of the union nut 9 is available.
  • the axes of the Exit bores 18 have a central angle of a °.
  • the outlet holes can also be arranged in groups on two or more circles. The axes form those on the smaller pitch circle lying outlet bores 18 'a central angle of b, the is smaller than the central angle a, which the axes of the on the form larger pitch circle lying outlet holes 18.
  • the amount of fuel assigned by each pitch circle Exit bores 18, 18 ' is enforced be of different sizes. That's usually how you get on the inner pitch circle and the smaller Outlet bores 18 'having a central angle are larger Blow in the amount of fuel. This amount of fuel continues to penetrate into the firebox, resulting in decreased formation of Nitrogen oxides during combustion. With a frontal firing you can achieve a fuel rating by the upward outlet bores 18 of the horizontal arranged atomizer gives a larger cross section than that downward outlet holes 18 so that through the first mentioned exit holes a larger amount of fuel is blown in.

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  • 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)
  • Nozzles (AREA)
  • Spray-Type Burners (AREA)

Abstract

A pulveriser for an oil burner includes a feed line (1), which carries the oil and a feed line (2) which carries the pulverising medium and leads to a mixing chamber (16) formed in a nozzle head (5) and provided with outlet bores (18). Into each outlet bore (18) of the mixing chamber (16) there opens at an angle a bore (22), which is led through the nozzle head (5) and to which the channel (2) carrying the pulverising medium is connected. <IMAGE>

Description

Die Erfindung betrifft einen Zerstäuber für einen Ölbrenner mit den Merkmalen des Oberbegriffes des Anspruches 1.The invention relates to an atomizer for an oil burner the features of the preamble of claim 1.

Für die Zerstäubung von Heizöl werden sogenannte Y-Zerstäuberdüsen eingesetzt (US-PS 24 80 459), bei denen Zerstäubungsdampf mit einem konstanten Druck von etwa 10 bis 11 bar leicht überhitzt über mehrere Düsenbohrungen aus dem Zerstäuberkopf unter einem bestimmten Winkel in den Feuerraum geblasen wird. Dieser Zerstäubungsdampf wird vor dem Austritt in gemeinsamen Austrittsbohrungen von etwas größerem Durchmesser Y-artig mit dem Heizöl in Verbindung gebracht. Dabei wird das Heizöl durch den expandierenden Zerstäubungsdampf in feine Tröpfchen zerrissen.So-called Y atomizing nozzles are used to atomize heating oil used (US-PS 24 80 459), in which Atomizing steam at a constant pressure of about 10 to 11 bar slightly overheated via several nozzle bores from the Atomizer head into the firebox at a certain angle is blown. This atomizing vapor is released before common outlet holes of somewhat larger diameter Y-like associated with the heating oil. It will Heating oil into fine by the expanding atomizing steam Droplets torn.

Weiterhin sind für die Zerstäubung insbesondere von schwerem Heizöl sogenannte Vorgemisch-Düsen bekannt. Bei diesen Düsen tritt das Heizöl über ein zentrales Rohr in eine Mischkammer ein, in die angenähert tangential einzelne Bohrungen zur Führung von Dampf einmünden. Die Dampfzustände sind vergleichbar mit denen in der Y-Düse. In der Mischkammer wird das Heizöl mit dem Dampf verwirbelt und tritt über einzelne Austrittsbohrungen unter einem bestimmten Winkel in den Feuerraum aus.Furthermore, are particularly heavy for atomization Heating oil known as premix nozzles. With these nozzles the heating oil enters a mixing chamber through a central pipe into the approximately tangential individual holes for guidance flow of steam. The vapor states are comparable to those in the Y nozzle. In the mixing chamber, the heating oil is mixed with the Steam swirls and passes through individual outlet bores at a certain angle into the firebox.

Bei einer bekannten Vorgemisch-Düse (VGB KRAFTWERKSTECHNIK 56 (1956) Seiten 622 bis 629) sind die in die Mischkammer einmündenden Bohrungen als Y-Düsen ausgebildet. Die Austrittsbohrungen der Mischkammer sind auf zwei Teilkreisen angeordnet, wobei die Achsen der Austrittsbohrungen beider Gruppen den gleichen Winkel zur Längsachse des Zerstäubers bilden. Eine andere bekannte Vorgemisch-Düse (DE-PS 34 42 148) verwendet zwei hintereinander liegende Mischkammern. Die Austrittsbohrungen der hinteren Mischkammer weisen unterschiedliche Querschnitte auf und sind unsymmetrisch zur Längsmittelebene angeordnet. Diese Maßnahmen dienen der gestuften Zuführung von Heizöl in den Feuerraum. In Anbetracht der gestiegenen Anforderungen an eine verminderte Schadstoffemission und bedingt durch die schlechter werdenden Qualitäten des Heizöles ist das durch die Vorgemisch-Düsen erzeugte Zerstäubungsergebnis nicht mehr ausreichend.With a known premix nozzle (VGB KRAFTWERKSTECHNIK 56 (1956) pages 622 to 629) are in the mixing chamber opening holes formed as Y-nozzles. The Outlet holes of the mixing chamber are on two circles arranged, the axes of the outlet bores of both Groups the same angle to the longitudinal axis of the atomizer form. Another known premix nozzle (DE-PS 34 42 148) uses two consecutive mixing chambers. The Show outlet holes in the rear mixing chamber different cross sections and are asymmetrical to Longitudinal median plane arranged. These measures serve the tiered supply of heating oil in the firebox. In view of the increased requirements for a reduced Pollutant emissions and due to the deteriorating The quality of the heating oil is due to the premix nozzles atomization result generated is no longer sufficient.

Aus der WO-A-92/0412 ist ein Zerstäuber zum Zerstäuben einer nicht näher bezeichneten Flüssigkeit bekannt. In dem Düsenkopf des Zerstäubers ist eine erste Kammer von gleichbleibendem Querschnitt gebildet, die mit einer die zu zerstäubende Flüssigkeit führenden Leitung verbunden ist. Von dieser Kammer gehen Rohre von gleichbleibendem Querschnitt aus, die zu Austrittsöffnungen führen. Diese Rohre durchdringen eine zweite in dem Düsenkopf gebildete Kammer, die mit einer Zuführung eines gasförmigen Zerstäubungsmediums verbunden ist. Die Rohre sind dort, wo sie durch die zweite Kammer geführt sind, mit Öffnungen versehen, durch die das Zerstäubungsmedium in die Rohre eindringt. Über Kanäle ist weiterhin die die Flüssigkeit aufnehmende erste Kammer 18 mit der zweiten Kammer für das Zerstäubungsmedium verbunden, so daß eine doppelte Zerstäubung ermöglicht wird. Aufgrund seiner Ausbildung ist der bekannte Zerstäuber eher geeignet, niedrig viskose Flüssigkeiten zu zerstäuben.WO-A-92/0412 describes an atomizer for atomizing one unspecified liquid known. In the nozzle head the atomizer is a first chamber of constant Cross-section formed with the one to be atomized Liquid-carrying line is connected. From this chamber tubes of constant cross section assume that Lead outlet openings. These pipes penetrate a second one chamber formed in the nozzle head with a feed a gaseous atomizing medium is connected. The pipes are there where they are led through the second chamber Provide openings through which the atomizing medium into the Pipes penetrates. The liquid continues to be via channels receiving first chamber 18 with the second chamber for the Atomization medium connected, so that a double atomization is made possible. Because of his education, the well-known Atomizers are more suitable for low-viscosity liquids atomize.

Der Erfindung liegt die Aufgabe zugrunde, den gattungsgemäßen Zerstäuber so zu gestalten, daß die Zerstäubungsqualität für die Verbrennung von schweren Heiz- und Sonderölen verbessert wird.The invention has for its object the generic Design atomizers so that the atomization quality for improves the combustion of heavy heating and special oils becomes.

Diese Aufgabe wird bei einem gattungsgemäßen Zerstäuber erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruches 1 gelöst. Vorteilhafte Ausgestaltung der Erfindung sind Gegenstand der Unteransprüche.This task is done with a generic atomizer according to the invention by the characterizing features of Claim 1 solved. Advantageous embodiment of the invention are the subject of the subclaims.

Bei dem erfindungsgemäßen Zerstäuber wird der Zerstäubungsdampf gestaffelt eingeblasen, so daß eine doppelte Zerstäubung erfolgt und zwar einmal in der Mischkammer und noch einmal vor dem Austritt aus den Y-artig ausgebildeten Austrittsbohrungen der Mischkammer. Durch diese räumlich im Düsenkopf zusammengefaßte, doppelte Zerstäubung läßt sich die Zerstäubungsqualität auch bei problematischen Ölen wesentlich verbessern, so daß diese Brennstoffe vollständig und mit verminderter Schadstoffemission verbrannt werden können.In the atomizer according to the invention, the atomizing vapor blown in staggered, so that a double atomization takes place once in the mixing chamber and again before the exit from the Y-shaped exit bores the mixing chamber. Through this spatially in the nozzle head summarized, double atomization Atomization quality essential even with problematic oils improve so that these fuels completely and with reduced pollutant emissions can be burned.

Das gestaffelte Einblasen kann gemäß Anspruch 4 dazu benutzt werden, einen Teil des Zerstäubungsdampfes als Kühl- und Sperrdampf zwischen den miteinander lösbar verbundenen und der sehr heißen Gasatmosphäre des Feuerraumes ausgesetzten Teilen am Zerstäuberkopf zu führen. Durch diese Kühlung wird eine Lockerung der aneinander gepreßten Teile und damit eine Ölleckage verhindert. Die gruppenweise Zusammenfassung einzelner Y-artig ausgebildeter und unterschiedlich geneigter Austrittsbohrungen gemäß den Ansprüchen 2 und 3 läßt eine gestufte Brennstoffzuführung in den Feuerraum zu, die bei der Verbrennung eine verminderte Bildung von Stickoxid begünstigt. The staggered blowing can be used according to claim 4 become a part of the atomizing vapor as cooling and Barrier steam between the releasably connected and the parts exposed to very hot gas atmosphere of the combustion chamber on the atomizer head. Through this cooling a Loosening of the pressed parts and thus a Oil leakage prevented. The group summary individual Y-shaped and differently inclined Exit bores according to claims 2 and 3 leaves one tiered fuel supply to the furnace, which at Combustion favors reduced nitrogen oxide formation.

Mehrere Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher erläutert. Es zeigen:

  • Fig. 1 den Längsschnitt durch den vorderen Teil eines Zerstäubers,
  • Fig. 2 die Seitenansicht des Zerstäubers nach Fig. 1 in Blickrichtung A,
  • Fig. 3 den Längsschnitt durch den Kopf eines Zerstäubers gemäß einer anderen Ausführungsform und
  • Fig. 4 die Seitenansicht des Zerstäubers nach Fig. 3 in Blickrichtung A.
    • Several embodiments of the invention are shown in the drawing and are explained in more detail below. Show it:
  • 1 shows the longitudinal section through the front part of an atomizer,
  • 2 shows the side view of the atomizer according to FIG. 1 in viewing direction A,
  • Fig. 3 shows the longitudinal section through the head of an atomizer according to another embodiment and
  • 4 shows the side view of the atomizer according to FIG. 3 in viewing direction A.

    • Der dargestellte Zerstäuber gehört zu einem Brenner zur Verbrennung von flüssigem Brennstoff, insbesondere zur schadstoffarmen Verbrennung von schwerem Heiz- oder Sonderöl. Er besteht aus zwei Zuführungsleitungen 1, 2, von denen eine der Zuführung des Heizöles und die andere der Zuführung eines dampf- oder gasförmigen Zerstäubungsmediums wie Wasserdampf oder Luft dient. Die beiden Zuführungsleitungen 1, 2 sind von einem äußeren Schutzrohr 3 umgeben, das über einen Boden 4 mit einem Düsenkopf 5 verbunden ist. Der Düsenkopf 5 besteht aus einem Kopfstück 6, einer Zwischenplatte 7 und einer Kappe 8, die dicht aneinander stoßend durch eine Überwurfmutter 9 miteinander verbunden sind. Die Überwurfmutter 9 greift mit einem Innengewinde 10 in ein auf dem Kopfstück 6 angebrachtes Außengewinde ein. Die Überwurfmutter 9 ist mit einer Halteklaue 11 versehen, die bei angezogener Überwurfmutter 9 an einer an die Kappe 8 angeformten Schulter anliegt.The atomizer shown belongs to a burner Combustion of liquid fuel, especially for Low pollutant combustion of heavy heating or special oil. He consists of two feed lines 1, 2, one of which Supply of the heating oil and the other of the supply of a steam or gaseous atomizing medium such as water vapor or air serves. The two feed lines 1, 2 are of one outer protective tube 3 surrounded by a bottom 4 with a Nozzle head 5 is connected. The nozzle head 5 consists of a Head piece 6, an intermediate plate 7 and a cap 8, the tight abutting against each other by a union nut 9 are connected. The union nut 9 engages with one Internal thread 10 in a mounted on the head piece 6 Male thread. The union nut 9 is with a holding claw 11 provided that with a tightened union nut 9 on one the cap 8 rests on the molded shoulder.

    Zwischen dem Boden 4 und dem Kopfstück 6 ist eine Kammer 12 gebildet, in die die das Zerstäubungsmedium führenden Zuführungsleitung 2 hineinmündet. Durch das Kopfstück 6 sind in Längsrichtung eine oder mehrere Durchgangsbohrungen 13 geführt, die die Kammer 12 mit einem Ringraum 14 verbinden, der an der Berührungsfläche zwischen dem Kopfstück 6 und der Zwischenplatte 7 gebildet ist. Die das Heizöl führende Zuführungsleitung 1 ist durch die Kammer 12 hindurch bis in das Kopfstück 6 geführt und mündet in einen das Kopfstück 6 durchdringenden Kanal 15. Between the bottom 4 and the head piece 6 is a chamber 12 formed in which the atomizing medium leading Feed line 2 opens into it. Through the head piece 6 are in One or more through holes 13 are guided in the longitudinal direction, which connect the chamber 12 with an annular space 14 which at the Contact surface between the head piece 6 and the intermediate plate 7 is formed. The supply line 1 carrying the heating oil is passed through the chamber 12 into the head piece 6 and opens into a channel 15 penetrating the head piece 6.

    Die Zwischenplatte 7 und die Kappe 8 umschließen eine Mischkammer 16, die über eine zentral in der Zwischenplatte 7 angebrachte Durchgangsöffnung 17 mit dem das Heizöl führenden Kanal 15 verbunden ist. Am austrittsseitigen Ende ist die Mischkammer 16 mit mehreren Austrittsbohrungen 18 versehen, die schräg durch die Kappe 8 geführt sind. Jede Austrittsbohrung 18 enthält zwei Abschnitte von unterschiedlichem Querschnitt, wobei der größere Querschnitt auf der Austrittsseite liegt.The intermediate plate 7 and the cap 8 enclose one Mixing chamber 16, which is centrally located in the intermediate plate 7 attached through opening 17 with the fuel oil leading Channel 15 is connected. At the exit end is the Mixing chamber 16 is provided with a plurality of outlet bores 18 which are guided obliquely through the cap 8. Each exit hole 18 contains two sections of different cross-section, whereby the larger cross section is on the outlet side.

    In die Mischkammer 16 münden schräg und angenähert tangential mehrere Eintrittsbohrungen 19 hinein, die von dem den Zerstäubungsdampf führenden Ringraum 14 ausgehen. In der Verlängerung des Ringraumes 14 sind durch die Zwischenplatte 7 Axialbohrungen 20 geführt, deren Eintrittsenden mit dem Ringraum 14 in Verbindung stehen und die in eine Ringkammer 21 münden, die an der Berührungsfläche zwischen der Zwischenplatte 7 und der Kappe 8 gebildet ist. Von der Ringkammer 21 gehen Schrägbohrungen 22 aus, die durch die Kappe 8 des Düsenkopfes 5 geführt sind und unter Bildung von Y-Düsen in dem größeren Abschnitt der Austrittsbohrungen 18 enden.In the mixing chamber 16 open obliquely and approximately tangentially several inlet bores 19 into it, from which the Atomizing vapor leading annulus 14 go out. In the Extension of the annular space 14 are through the intermediate plate 7 Axial bores 20 guided, the inlet ends with the annular space 14 are connected and open into an annular chamber 21, the at the interface between the intermediate plate 7 and the cap 8 is formed. Go from the ring chamber 21 Inclined bores 22 made through the cap 8 of the nozzle head 5 are guided and with the formation of Y-nozzles in the larger Section of the outlet holes 18 end.

    Das aus dem Kanal 15 in die Mischkammer 16 einströmende Heizöl wird durch den aus den Eintrittsbohrungen 19 eintretenden Zerstäubungsdampf verwirbelt und tritt anschließend aus den Austrittsbohrungen 18 aus. Vor dem Austritt aus den Austrittsbohrungen 18 wird das so behandelte Heizöl durch den aus den Schrägbohrungen 22 zugeführten Zerstäubungsdampf noch einmal zerstäubt.The heating oil flowing from the channel 15 into the mixing chamber 16 is through the entering from the inlet holes 19 Atomizing steam swirls and then emerges from the Exit bores 18 out. Before leaving the Outlet bores 18, the heating oil treated in this way atomization steam supplied from the oblique bores 22 atomized once.

    Von einer oder mehreren der Axialbohrungen 20 und der Schrägbohrungen 22 gehen Querbohrungen 23 aus, die in ringförmigen Randausnehmungen 24 enden. Die Randausnehmungen 24 sind auf der Außenseite in die Zwischenplatte 7 und die Kappe 8 geschnitten. Über die Querbohrungen 23 wird ein Teil des Zerstäubungsdampfes abgezweigt und als Kühl- oder Sperrdampf in den Ringspalt geführt, der zwischen der Zwischenplatte 7 und der Kappe 8 des Düsenkopfes 5 und der Überwurfmutter 9 sowie zwischen der Kappe 8 und der Halteklaue 11 der Überwurfmutter 9 vorhanden ist.Of one or more of the axial bores 20 and Oblique bores 22 go out of transverse bores 23, which in annular edge recesses 24 end. The edge recesses 24 are on the outside in the intermediate plate 7 and the cap 8th cut. Part of the Atomized steam branched off and in as cooling or barrier steam guided the annular gap between the intermediate plate 7 and Cap 8 of the nozzle head 5 and the union nut 9 and between the cap 8 and the holding claw 11 of the union nut 9 is available.

    Bei der Ausführungsform gemäß Fig. 1 bilden die Achsen der Austrittsbohrungen 18 einen Zentriwinkel von a°. Wie in den Fig. 3 und 4 dargestellt ist, können die Austrittsbohrungen auch gruppenweise auf zwei oder mehr Teilkreisen angeordnet sein. Dabei bilden die Achsen der auf dem kleineren Teilkreis liegenden Austrittsbohrungen 18' einen Zentriwinkel von b, der kleiner als der Zentriwinkel a ist, den die Achsen der auf dem größeren Teilkreis liegenden Austrittsbohrungen 18 bilden.In the embodiment of FIG. 1, the axes of the Exit bores 18 have a central angle of a °. As in the Fig. 3 and 4, the outlet holes can also be arranged in groups on two or more circles. The axes form those on the smaller pitch circle lying outlet bores 18 'a central angle of b, the is smaller than the central angle a, which the axes of the on the form larger pitch circle lying outlet holes 18.

    Die Brennstoffmenge, die durch die jedem Teilkreis zugeordneten Austrittsbohrungen 18, 18' durchgesetzt wird, kann unterschiedlich groß sein. So wird man meistens durch die auf dem inneren Teilkreis angeordneten und den kleineren Zentriwinkel aufweisenden Austrittsbohrungen 18' eine größere Brennstoffmenge einblasen. Diese Brennstoffmenge dringt weiter in den Feuerraum ein, was zu einer verminderten Bildung von Stickoxiden bei der Verbrennung führt. Bei einer Frontalfeuerung kann man eine Brennstoffstufung dadurch erreichen, daß man den nach oben gerichteten Austrittsbohrungen 18 des horizontal angeordneten Zerstäubers einen größeren Querschnitt gibt als den nach unten gerichteten Austrittsbohrungen 18, so daß durch die erstgenannten Austrittsbohrungen eine größere Brennstoffmenge eingeblasen wird.The amount of fuel assigned by each pitch circle Exit bores 18, 18 'is enforced be of different sizes. That's usually how you get on the inner pitch circle and the smaller Outlet bores 18 'having a central angle are larger Blow in the amount of fuel. This amount of fuel continues to penetrate into the firebox, resulting in decreased formation of Nitrogen oxides during combustion. With a frontal firing you can achieve a fuel rating by the upward outlet bores 18 of the horizontal arranged atomizer gives a larger cross section than that downward outlet holes 18 so that through the first mentioned exit holes a larger amount of fuel is blown in.

    Claims (4)

    1. Atomiser for an oil burner with a feed duct (1) conducting the oil and a feed duct (2) conducting the atomising medium, which ducts lead to a mixing chamber (16) formed in a nozzle head (5) and provided with outlet bores (18), wherein the feed duct (2) conducting the atomising medium additionally stands in connection with the outlet bores (18) of the mixing chamber (16), characterised thereby that the connection comprises bores (22) which are guided obliquely through the nozzle head (5), that the outlet bores (18) have two sections with different cross-sections and that the bores (22) open at an angle in Y-shaped manner each time into the section, which lies at the outlet side, with the greater cross-section of the outlet bores (18).
    2. Atomiser according to claim 1, characterised thereby that the outlet bores (18, 18') are arranged in groups and that the longitudinal axes of the outlet bores (18, 18') of each group form a different angle relative to the longitudinal axis of the atomiser.
    3. Atomiser according to claim 1 or 2, characterised thereby that the outlet bores (18) have a cross-section of different size at both sides of the longitudinal centre plane.
    4. Atomiser according to one of claims 1 to 3, characterised thereby that the mixing chamber (16) inclusive of nozzle head (5) consists of several parts which are connected together by a box nut (9) and that transverse bores (23) extend from the bores (20, 22), which penetrate the nozzle head (5) and conduct the atomising medium, and are led outwardly in the intermediate space between the nozzle head (5) and the box nut (9).
    EP93112693A 1992-11-17 1993-08-07 Pulverizer for an oil burner Expired - Lifetime EP0598189B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE4238736A DE4238736A1 (en) 1992-11-17 1992-11-17 Atomizer for an oil burner
    DE4238736 1992-11-17

    Publications (2)

    Publication Number Publication Date
    EP0598189A1 EP0598189A1 (en) 1994-05-25
    EP0598189B1 true EP0598189B1 (en) 1998-01-07

    Family

    ID=6473072

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP93112693A Expired - Lifetime EP0598189B1 (en) 1992-11-17 1993-08-07 Pulverizer for an oil burner

    Country Status (4)

    Country Link
    US (1) US5368230A (en)
    EP (1) EP0598189B1 (en)
    AT (1) ATE161938T1 (en)
    DE (2) DE4238736A1 (en)

    Families Citing this family (25)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2743012B1 (en) * 1995-12-27 1998-01-30 Air Liquide DEVICE FOR SPRAYING A LIQUID FUEL WITH A SPRAY GAS
    US5826798A (en) * 1996-10-01 1998-10-27 Todd Combustion Atomizer with array of discharge holes to provide improved combustion efficiency and process
    US5860600A (en) * 1996-10-01 1999-01-19 Todd Combustion Atomizer (low opacity)
    US6227846B1 (en) 1996-11-08 2001-05-08 Shrinkfast Corporation Heat gun with high performance jet pump and quick change attachments
    EP0841518B1 (en) * 1996-11-08 2003-02-05 Shrinkfast Corporation Heat gun with high performance jet pump and quick change attachments
    WO2000037143A1 (en) * 1998-12-23 2000-06-29 Lockwood Hanford N Low pressure dual fluid atomizer
    FI112037B (en) † 1999-12-22 2003-10-31 Marioff Corp Oy spray head
    US6478239B2 (en) * 2000-01-25 2002-11-12 John Zink Company, Llc High efficiency fuel oil atomizer
    GB2362847A (en) * 2000-06-02 2001-12-05 Hamworthy Combustion Eng Ltd Fuel burner nozzle
    KR200210396Y1 (en) * 2000-07-18 2001-01-15 박석호 Fuel injection device of boiler
    DE102005024608B4 (en) * 2005-05-25 2009-05-07 Astrium Gmbh Injection device for combustion chambers of liquid rocket engines
    DE102005039412A1 (en) * 2005-08-20 2007-02-22 Forschungszentrum Karlsruhe Gmbh Zweistoffzerstäubervorrichtung
    US7966820B2 (en) * 2007-08-15 2011-06-28 General Electric Company Method and apparatus for combusting fuel within a gas turbine engine
    US8523560B2 (en) 2010-04-09 2013-09-03 Honeywell International Inc. Spark detection in a fuel fired appliance
    US9388984B2 (en) 2010-04-09 2016-07-12 Honeywell International Inc. Flame detection in a fuel fired appliance
    US8177544B2 (en) 2010-04-09 2012-05-15 Honeywell International Inc. Selective lockout in a fuel-fired appliance
    US10208954B2 (en) 2013-01-11 2019-02-19 Ademco Inc. Method and system for controlling an ignition sequence for an intermittent flame-powered pilot combustion system
    US9494320B2 (en) 2013-01-11 2016-11-15 Honeywell International Inc. Method and system for starting an intermittent flame-powered pilot combustion system
    JP2016007568A (en) * 2014-06-24 2016-01-18 アネスト岩田株式会社 Spray device
    DE102016208653A1 (en) * 2016-05-19 2017-11-23 Lechler Gmbh Nozzle for spraying liquids
    CN107726312B (en) * 2017-10-19 2024-03-22 山东辰跃节能科技有限公司 Two-stage steam atomization oil gun
    US11305142B2 (en) * 2018-01-12 2022-04-19 Carrier Corporation End cap agent nozzle
    US11236930B2 (en) 2018-05-01 2022-02-01 Ademco Inc. Method and system for controlling an intermittent pilot water heater system
    US11739982B2 (en) 2019-08-14 2023-08-29 Ademco Inc. Control system for an intermittent pilot water heater
    US11656000B2 (en) 2019-08-14 2023-05-23 Ademco Inc. Burner control system

    Family Cites Families (17)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    USRE24771E (en) * 1960-01-19 Vaporizing and mixing unit
    DE567291C (en) * 1930-05-14 1932-12-30 Eugene Brillie Atomizing burner for liquid fuels with an axial feed channel for the fuel
    JPS4717395Y1 (en) * 1968-07-24 1972-06-16
    FR2288940A1 (en) * 1974-10-24 1976-05-21 Pillard Chauffage IMPROVEMENTS TO LIQUID FUEL BURNERS SPRAYED BY THE RELIEF OF AN AUXILIARY FLUID AND METHOD OF USING THE latter
    JPS5565814A (en) * 1978-11-09 1980-05-17 Nippon Steel Corp Liquid fuel combustion burner
    US4356970A (en) * 1979-05-18 1982-11-02 Coen Company, Inc. Energy saving fuel oil atomizer
    SU985576A1 (en) * 1981-07-20 1982-12-30 Уральский филиал Всесоюзного научно-исследовательского и проектного института галургии Nozzle
    JPS5886316A (en) * 1981-11-19 1983-05-23 Mitsubishi Heavy Ind Ltd Burner
    EP0101109B1 (en) * 1982-08-09 1988-03-23 Shell Internationale Researchmaatschappij B.V. Mix atomizer
    DE3442148A1 (en) * 1984-11-17 1986-05-28 L. & C. Steinmüller GmbH, 5270 Gummersbach SPRAYER NOZZLE WITH FITTED DISTRIBUTOR CAP TO REDUCE NITROGEN EMISSION WHEN BURNING LIQUID FUELS
    JPH0635882B2 (en) * 1985-11-11 1994-05-11 バブコツク日立株式会社 Atomizer for slurry combustion
    JPS62155426A (en) * 1985-12-27 1987-07-10 Mitsubishi Heavy Ind Ltd Oil burner tip
    EP0278115B1 (en) * 1987-02-13 1990-04-11 BBC Brown Boveri AG Spray nozzle
    FR2641365B1 (en) * 1988-12-30 1991-12-13 Pillard Chauffage METHODS AND DEVICES FOR FINELY SPRAYING A LIQUID FUEL AND BURNERS PROVIDED WITH SUCH DEVICES
    DE69026563T2 (en) * 1989-09-20 1996-09-12 E P S Engineering Co Ltd Burners for burning liquid fuel
    DD294329A5 (en) * 1990-05-10 1991-09-26 Technische Hochschule Zittau,De BURNERS FOR BURNING LIQUID FUELS
    GB9019188D0 (en) * 1990-09-03 1990-10-17 Turbotak Inc Improved spray nozzle design

    Also Published As

    Publication number Publication date
    DE4238736A1 (en) 1994-05-19
    US5368230A (en) 1994-11-29
    DE59307935D1 (en) 1998-02-12
    ATE161938T1 (en) 1998-01-15
    EP0598189A1 (en) 1994-05-25

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