EP0414050B1 - Burner head - Google Patents

Burner head Download PDF

Info

Publication number
EP0414050B1
EP0414050B1 EP90115233A EP90115233A EP0414050B1 EP 0414050 B1 EP0414050 B1 EP 0414050B1 EP 90115233 A EP90115233 A EP 90115233A EP 90115233 A EP90115233 A EP 90115233A EP 0414050 B1 EP0414050 B1 EP 0414050B1
Authority
EP
European Patent Office
Prior art keywords
air duct
oil
air
end portions
duct end
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
Application number
EP90115233A
Other languages
German (de)
French (fr)
Other versions
EP0414050A3 (en
EP0414050A2 (en
Inventor
Siegfried Müller
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.)
Abig Werke Carry Gross & Co KG GmbH
Original Assignee
Abig Werke Carry Gross & Co KG GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Abig Werke Carry Gross & Co KG GmbH filed Critical Abig Werke Carry Gross & Co KG GmbH
Publication of EP0414050A2 publication Critical patent/EP0414050A2/en
Publication of EP0414050A3 publication Critical patent/EP0414050A3/en
Application granted granted Critical
Publication of EP0414050B1 publication Critical patent/EP0414050B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F23D11/40—Mixing tubes or chambers; Burner heads

Definitions

  • the invention relates to a combustion head for a gasification oil burner with an oil atomization device having an oil supply pipe, a combustion air supply device surrounding it with air duct pipes and air duct end pieces provided with air outlet slots, and an end plate closing a burner neck of the combustion head from a combustion chamber, the air duct end pieces protruding into the air duct ends of the combustion chamber are attached.
  • Such a combustion head is known from FR-A-2 262 775.
  • the air duct end pieces are attached in the immediate vicinity of an end plate of a burner neck and can be supplied with combustion air via air duct pipes.
  • Air outlet slots introduced into the air duct end pieces extend along the air duct end pieces from their upper end to the immediate area of the end plate.
  • An opening is provided in the middle of the end plate, from which the atomized oil to be burned emerges in a conical shape.
  • the combustion air emerging from the air outlet slots by pressurization is directed in the direction of the oil mist, so that the air-oil mixture to be burned is generated.
  • FR-A-2 262 775 it is further described how various configurations and arrangements of the air duct end pieces and air outlet slots are used the combustion process can be influenced.
  • the air duct end pieces are rotatably attached directly to the end plate, so that the outlet direction of the combustion air can be adjusted by the rotation of the air duct end pieces.
  • the object of the invention is to create a combustion head which, even at low oil pressures and low exit speeds of the combustion air, leads to a stable combustion flame which is largely independent of external air pressure fluctuations.
  • the air duct end pieces with combustion air between the end plate and the associated air duct end piece have a length which is a multiple of the diameter of the air duct end pieces, so that the distance of the air duct end pieces from the end plate is also a multiple of the diameter is the air duct end pieces.
  • the speeds of the oil mist to be burned and the combustion air introduced are relatively high even at low pressures, and the flow has a somewhat turbulent behavior, so that the combustion takes place in a stable flowing medium and is relatively insensitive to external air pressure fluctuations.
  • the oil supply pipe protrudes into the combustion chamber and passes through the recirculation space, so that the oil flowing through it can be heated in the oil supply pipe.
  • the oil atomization device is located in the area of the end plate and the atomized oil mist passes through the recirculation space, so that the atomized oil mist can be heated directly.
  • the air duct end pieces are designed as simple cylindrical air pipe end pieces.
  • the ends of the air pipe end pieces adjacent to the outlet of the oil atomization device are each connected to an air duct pipe which preferably runs parallel to the oil supply pipe of the oil atomization device and through which the combustion air is guided to the air outlet slots.
  • the air pipe end pieces are preferably arranged along a conical surface, the tip of which lies near (approx. 10-50 mm behind the nozzle in the direction of flow of the oil) the outlet of the oil atomizing device and the cone angle of which can be adapted to the spray angle of the pressure atomizing nozzle of the oil atomizing device.
  • the tip of the conical surface can be up to 50 mm behind the outlet of the oil atomization device.
  • the air outlet slots are each arranged on the flame-facing part of the jacket of the air pipe end piece. It is possible for the air outlet slots to be arranged exactly on the surface line facing the flame or laterally offset from it. In the first case the air exits essentially parallel to the oil feed pipe and to the axis of the oil mist and in the second case spirally to the axis of the oil mist cone.
  • the arrangement of the air duct pipes can be such that they run in the vicinity of the oil supply pipe and are bent radially outwards in the vicinity of the outlet of the oil atomization device and thereby pass into the air pipe end pieces.
  • the air duct tubes are arranged in a larger pitch circle and merge into the air duct end pieces at the outer end thereof.
  • the air outlet slots have a length that can be greater than the distance between the outlet of the oil atomization device and the closest end of the air outlet slots.
  • Fig. 1 shows a combustion head for a gasification oil burner in longitudinal section without the walls of the combustion chamber surrounding the combustion head.
  • the combustion head is fastened to a burner neck 1 which projects into the combustion chamber and is covered by a circular disk-shaped end plate 2, which can be seen in a top view in FIG. 2.
  • An oil feed pipe 3 extends through the end plate 2 along the central longitudinal axis of the burner neck 1 and is connected via an oil line to an oil feed pump which conveys oil from an oil tank to the combustion head.
  • a pressure atomizing nozzle 4 is provided at the front end of the oil supply pipe 3 pointing to the right in FIG. 1, a pressure atomizing nozzle 4 is provided.
  • the pressure atomizer nozzle 4 is a pressure swirl nozzle or simplex nozzle which has tangentially arranged swirl chamber slots in the interior in order to set the oil into rotation, so that after leaving the nozzle bore 5 the centrifugal force escapes radially and generates an oil spray cone.
  • the pressure supplied by the oil pump is in the range between 4 and 20 bar.
  • the area of the combustion head located in front of the nozzle bore 5 forms a gasification zone for the oil mist, which can be ignited with the help of one or two ignition electrodes, not shown in the drawing.
  • the combustion air required for the combustion passes through the burner neck 1 and eight air duct pipes 6 to 13 to eight air duct end pieces 14 to 21.
  • FIG. 5 shows another variant of the combustion air duct compared to the exemplary embodiment according to FIG. 1.
  • the air passes through the burner neck 1 into eight air duct pipes 30 to 37 to eight air duct end pieces 39 to 46.
  • the air duct end pieces 39 to 46 in the embodiment shown in the drawing have the shape of pipe end pieces that correspond to those in FIG. 5 to the right facing ends of the air duct pipes 30 to 37 are connected.
  • the arrangement can be such that the air duct pipes 30 to 37 have a bent section 47 which projects outwards away from the oil supply pipe 3 and opens into the air duct end pieces 39 to 46 projecting inwards towards the oil atomizing nozzle 4.
  • the air duct end pieces 14 to 21 have the shape of pipe end pieces which are connected to the ends of the air duct pipes 6 to 13 pointing to the right in FIG. 1.
  • the arrangement can be such that the air duct pipes 6 to 13 have a bent section 22 at the front end, which is bent inwards towards the oil supply pipe 3 and the pressure atomizing nozzle 4 and on which the air duct end pieces 14 to 21 are arranged at right angles, so that the Air duct end pieces 14 to 21 do not extend at right angles to the longitudinal axis of the oil atomizing nozzle 4, but are somewhat inclined and are therefore arranged along a conical surface, the conical tip of which lies at an obtuse angle in the region of the nozzle bore 5 of the pressure atomizing nozzle 4.
  • the air duct end pieces 14 to 21 and 39 to 46 which can be seen in FIGS. 2 and 6 in a view from the front are, are closed at their ends by locking washers 23 and 48.
  • the combustion air introduced into the air duct tubes 6 to 13 or 30 to 37 and air duct end pieces 14 to 21 or 39 to 46 with the aid of a blower leaves the air duct end pieces 14 to 21 or 39 to 46 via air outlet slots 24 or 49, which are in the jacket of the Air duct end pieces 14 to 21 or 39 to 46 are provided on the forward-facing side and extend over most of the length of the air duct end pieces 14 to 21 or 39 to 46.
  • the air outlet slots 24 and 49 are laterally offset by the same amount relative to the arrangement shown in FIG. 2 according to FIG. 6, so that the escaping combustion air is not essentially forward and in the direction of the elongated axis of the Oil supply pipe is blown, but also has a tangential component through which the combustion air is given an additional swirl.
  • the slots can be offset laterally, as already mentioned, or provided with a guide plate 29 in the manner shown in FIG. 4 be, which extends along an air outlet slot 24 and deflects the emerging combustion air laterally.
  • the air duct end pieces 39 to 46 shown in FIG. 5 can also have air outlet slots 49 with a guide plate 29 as shown in FIG. 4.
  • Fig. 7 shows an embodiment of the invention, in which the components already mentioned are provided with the same reference numerals as in the above description.
  • the burner neck 1 can be seen which, at its end pointing to the right in FIG End cover 32 is closed.
  • the conical end cover 32 has a plurality of openings arranged along its outer circumference, through which air can get into the air duct tubes 6 to 13 from the inside of the burner neck 1.
  • the air duct tubes 6 to 13 are sealingly attached to the conical end cover 32, so that the conical end cover 32 on the one hand has the task of a mechanical holder and on the other hand has the task of making the flow conditions as favorable as possible.
  • the air duct pipes 6 to 13 introduce the air into air duct end pieces 14 to 21 which are connected at an angle to the latter and are provided with air outlet slots 24, which are shown particularly clearly in FIG. 8.
  • the angle between the air duct tubes 6 to 13 and the air duct end pieces 14 to 21 is made obtuse.
  • eight, nine or ten air duct pipes 6 to 13 with the corresponding air duct end pieces 14 to 21 are provided.
  • the pressure atomizing nozzle 4 is, as in the previously described exemplary embodiments, fastened to the front end of the oil supply pipe 3, through which, in the direction of arrow 34, the one intended for combustion Oil arrives. 7 also shows an oil supply device 35 which allows the oil to be preheated. In addition, one can see a holder 36 fastened on the oil supply pipe 3 for an ignition device 37 with ignition electrodes 38. The ignition electrodes 38 are connected via an ignition line 39 to an ignition transformer which supplies the high voltage required to ignite the oil after the supply of air in the direction of arrow 40 and the oil in the direction of arrow 34 has started Has.
  • FIG. 8 shows a combustion head of the type according to FIG. 7 in a top view from the front.
  • the combustion head shown in FIG. 8 has a different number of air duct end pieces 14, 14 ′ to 21 with respect to the sectional plane shown in FIG. 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spray-Type Burners (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Meat, Egg Or Seafood Products (AREA)

Abstract

A gasification oil burner with an oil-atomising device has, for creating an injector effect for the recirculation of flame gases, a plurality of air duct endpieces (14 to 21) or (39 to 46) with air outlet slots (24), arranged in the shape of a star around the nozzle bore (5) of a pressure atomising nozzle (4). The combustion air emerging from the air outlet slots (24) is mixed with the flame gases drawn in as a result of the injector effect and brings about gasification of the oil spray in front of the nozzle bore (5). <IMAGE>

Description

Die Erfindung betrifft einen Verbrennungskopf für einen Vergasungsölbrenner mit einer ein Ölzufuhrrohr aufweisenden Ölzerstäubungseinrichtung, einer diese umgebenden Verbrennungsluftzufuhreinrichtung mit Luftkanalrohren sowie mit Luftaustrittsschlitzen versehenen Luftkanalendstücken und einer einen Brennerhals des Verbrennungskopfes von einer Brennkammer abschließenden Abschlußplatte, wobei die Luftkanalendstücke an den in die Brennkammer hineinragenden Enden der Luftkanalrohre angebracht sind.The invention relates to a combustion head for a gasification oil burner with an oil atomization device having an oil supply pipe, a combustion air supply device surrounding it with air duct pipes and air duct end pieces provided with air outlet slots, and an end plate closing a burner neck of the combustion head from a combustion chamber, the air duct end pieces protruding into the air duct ends of the combustion chamber are attached.

Ein derartiger Verbrennungskopf ist aus der FR-A-2 262 775 bekannt. Bei diesem Verbrennungskopf sind die Luftkanalendstücke in unmittelbarer Nähe einer Abschlußplatte eines Brennerhalses angebracht und über Luftkanalrohre mit Verbrennungsluft beaufschlagbar. In die Luftkanalendstücke eingebrachte Luftaustrittsschlitze erstrecken sich längs der Luftkanalendstücke von deren oberen Ende bis in den unmittelbaren Bereich der Abschlußplatte. In der Mitte der Abschlußplatte ist eine Öffnung vorgesehen, aus der kegelförmig das zu verbrennende, zerstäubte Öl austritt. Die durch Druckbeaufschlagung aus den Luftaustrittsschlitzen austretende Verbrennungsluft ist in Richtung des Ölnebels gerichtet, so daß das zu verbrennende Luft-Öl-Gemisch erzeugt ist.Such a combustion head is known from FR-A-2 262 775. In this combustion head, the air duct end pieces are attached in the immediate vicinity of an end plate of a burner neck and can be supplied with combustion air via air duct pipes. Air outlet slots introduced into the air duct end pieces extend along the air duct end pieces from their upper end to the immediate area of the end plate. An opening is provided in the middle of the end plate, from which the atomized oil to be burned emerges in a conical shape. The combustion air emerging from the air outlet slots by pressurization is directed in the direction of the oil mist, so that the air-oil mixture to be burned is generated.

In der FR-A-2 262 775 ist weiterhin beschrieben, wie durch verschiedenartigste Ausgestaltungen und Anordnungen der Luftkanalendstücke und Luftaustrittsschlitzen der Verbrennungsvorgang beeinflußbar ist. So sind die Luftkanalendstücke zum Beispiel drehbar unmittelbar auf der Abschlußplatte befestigt, so daß durch die Drehung der Luftkanalendstücke die Austrittsrichtung der Verbrennungsluft einstellbar ist.In FR-A-2 262 775 it is further described how various configurations and arrangements of the air duct end pieces and air outlet slots are used the combustion process can be influenced. For example, the air duct end pieces are rotatably attached directly to the end plate, so that the outlet direction of the combustion air can be adjusted by the rotation of the air duct end pieces.

Obwohl bei derartigen Brennern mannigfaltige Ausgestaltungen zum winkligen Anordnen der Luftkanalendstücke in Bezug auf den Austrittskegel des Öles und Ausgestaltungen der Luftaustrittsschlitzen zum Verbessern der Verbrennungseigenschaften vorgeschlagen sind, hat sich erwiesen, daß es mit derartigen Brennern äußerst schwierig ist, eine stabile, von äußeren Bedingungen wie Luftdruckschwankungen in der Brennkammer weitgehend unabhängige Verbrennung zu erhalten. Die Verbrennung findet in Ausströmungsrichtung weit jenseits der Luftkanalendstücke statt, wo die Strömungsgeschwindigkeit des Ölnebels und der Verbrennungsluft verglichen mit der Strömungsgeschwindigkeit in unmittelbarer Nähe der Luftkanalendstücke verhältnismäßig niedrig ist und das Strömungsverhalten turbulenten Charakter zeigt. Aus diesem Grund brennt die Flamme sehr instabil und ist von den äußeren Luftdruckbedingungen in der Brennkammer stark beeinflußt. Weiterhin sind relativ hohe Öl- und Verbrennungsluftdrücke erforderlich, um die Verbrennung weit entfernt von den Luftaustrittsschlitzen zu unterhalten.Although a variety of designs for angularly arranging the air duct end pieces with respect to the outlet cone of the oil and designs of the air outlet slots for improving the combustion properties have been proposed in such burners, it has been found that it is extremely difficult with such burners to provide a stable solution to external conditions such as fluctuations in air pressure to obtain largely independent combustion in the combustion chamber. The combustion takes place in the outflow direction far beyond the air duct end pieces, where the flow velocity of the oil mist and the combustion air is relatively low compared to the flow velocity in the immediate vicinity of the air duct end pieces and the flow behavior shows a turbulent character. For this reason, the flame burns very unstably and is strongly influenced by the external air pressure conditions in the combustion chamber. Relatively high oil and combustion air pressures are also required to maintain combustion far from the air outlet slots.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, einen Verbrennungskopf zu schaffen, der auch bei niedrigen Öldrücken und geringen Austrittsgeschwindigkeiten der Verbrennungsluft zu einer stabilen, von äußeren Luftdruckschwankungen weitgehend unabhängigen Verbrennungsflamme führt.On the basis of this prior art, the object of the invention is to create a combustion head which, even at low oil pressures and low exit speeds of the combustion air, leads to a stable combustion flame which is largely independent of external air pressure fluctuations.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die die Luftkanalendstücke mit Verbrennungsluft beaufschlagenden Luftkanalrohre zwischen der Abschlußplatte und dem jeweils zugeordneten Luftkanalendstück eine Länge aufweisen, die ein Vielfaches des Durchmessers der Luftkanalendstücke beträgt, so daß der Abstand der Luftkanalendstücke von der Abschlußplatte ebenfalls ein Vielfaches des Durchmessers der Luftkanalendstücke ist.This object is achieved in that the air duct end pieces with combustion air between the end plate and the associated air duct end piece have a length which is a multiple of the diameter of the air duct end pieces, so that the distance of the air duct end pieces from the end plate is also a multiple of the diameter is the air duct end pieces.

Durch die Anordnung der Luftkanalendstücke mit einem großen, dem Vielfachen des Durchmessers der Luftkanalendstücke entsprechenden Abstand von der Abschlußplatte ergibt sich ein vollständig anderes Verbrennungsverhalten der Flamme als bei Brennern nach dem Stand der Technik. Durch den Abstand zwischen den Luftaustrittsschlitzen und der Abschlußplatte wird nämlich zwischen der Flammenfront und der Abschlußplatte ein Rezirkulationsraum geschaffen, der durch eine entgegen der Austrittsrichtung des Öles verlaufende Gasströmung mit heißen Verbrennungsgasen füllbar ist.The arrangement of the air duct end pieces with a large distance from the end plate corresponding to the multiple of the diameter of the air duct end pieces results in a completely different combustion behavior of the flame than in burners according to the prior art. Because of the distance between the air outlet slots and the end plate, a recirculation space is created between the flame front and the end plate, which can be filled with hot combustion gases by a gas flow running counter to the direction of exit of the oil.

Die aus dem in Ausströmrichtung weit von den Luftkanalendstücken entfernten Teil der Brennkammer in den Rezirkulationsraum einströmenden heißen Gase erwärmen das zu verbrennende Öl vor der Entzündung, so daß die Entzündung des Öles in der Nähe der Luftaustrittsschlitze erfolgt. In diesem Bereich sind die Geschwindigkeiten des zu verbrennenden Ölnebels sowie der eingebrachten Verbrennungsluft auch bei niedrigen Drücken verhältnismäßig hoch, und die Strömung weist ein wenig turbulentes Verhalten auf, so daß die Verbrennung in einem stabil strömenden Medium stattfindet und gegenüber äußeren Luftdruckschwankungen verhältnismäßig unempfindlich ist. Durch das Vorerwärmen des Öles verdampft dieses bereits weitgehend vor der Verbrennung, so daß die Verbrennung des Öl-Luft-Gasgemisches umweltfreundlich mit geringem Stickoxidausstoß vergleichbar wie bei einem Blaubrenner erfolgt.The hot gases flowing into the recirculation space from the part of the combustion chamber that is far away from the air duct end pieces heat the oil to be burned before the ignition, so that the oil ignites in the vicinity of the air outlet slots. In this area, the speeds of the oil mist to be burned and the combustion air introduced are relatively high even at low pressures, and the flow has a somewhat turbulent behavior, so that the combustion takes place in a stable flowing medium and is relatively insensitive to external air pressure fluctuations. By preheating of the oil evaporates to a large extent before the combustion, so that the combustion of the oil-air-gas mixture takes place in an environmentally friendly manner with low nitrogen oxide emissions, comparable to a blue burner.

Bei einem Ausführungsbeispiel ragt das Ölzufuhrrohr in der Brennkammer hinein und durchtritt den Rezirkulationsraum, so daß das durchfließende Öl in dem Ölzufuhrrohr erwärmbar ist. In einem besonders bevorzugten Ausführungbeispiel befindet sich die Ölzerstäubungseinrichtung im Bereich der Abschlußplatte und der zerstäubte Ölnebel durchtritt den Rezirkulationsraum, so daß der zerstäubte Ölnebel direkt erwärmbar ist.In one embodiment, the oil supply pipe protrudes into the combustion chamber and passes through the recirculation space, so that the oil flowing through it can be heated in the oil supply pipe. In a particularly preferred embodiment, the oil atomization device is located in the area of the end plate and the atomized oil mist passes through the recirculation space, so that the atomized oil mist can be heated directly.

Bei einem zweckmäßigen Ausführungsbeispiel der Erfindung sind die Luftkanalendstücke als einfache zylindrische Luftrohrendstücke ausgebildet. Die dem Auslaß der Ölzerstäubungseinrichtung benachbarten Enden der Luftrohrendstücke sind jeweils mit einem vorzugsweise parallel zum Ölzufuhrrohr der Ölzerstäubungseinrichtung verlaufenden Luftkanalrohr verbunden, durch das die Verbrennungsluft zu den Luftaustrittsschlitzen geführt wird.In an expedient embodiment of the invention, the air duct end pieces are designed as simple cylindrical air pipe end pieces. The ends of the air pipe end pieces adjacent to the outlet of the oil atomization device are each connected to an air duct pipe which preferably runs parallel to the oil supply pipe of the oil atomization device and through which the combustion air is guided to the air outlet slots.

Die Luftrohrendstücke sind vorzugsweise entlang einer Kegelfläche angeordnet, deren Spitze in der Nähe (ca. 10 - 50 mm hinter der Düse in Strömungsrichtung des Öls gesehen) des Auslasses der Ölzerstäubungseinrichtung liegt und deren Kegelwinkel dem Sprühwinkel der Druckzerstäuberdüse der Ölzerstäubungseinrichtung angepaßt sein kann.The air pipe end pieces are preferably arranged along a conical surface, the tip of which lies near (approx. 10-50 mm behind the nozzle in the direction of flow of the oil) the outlet of the oil atomizing device and the cone angle of which can be adapted to the spray angle of the pressure atomizing nozzle of the oil atomizing device.

Vorteilhaft hat sich auch gezeigt, daß die Spitze der Kegelfläche bis zu 50 mm hinter dem Auslaß der Ölzerstäubungseinrichtung liegen kann.It has also been shown to be advantageous that the tip of the conical surface can be up to 50 mm behind the outlet of the oil atomization device.

Die Luftaustrittsschlitze sind jeweils auf dem zur Flamme weisenden Teil des Mantels des Luftrohrendstückes angeordnet. Dabei besteht die Möglichkeit, daß die Luftaustrittsschlitze genau auf der zur Flamme weisenden Mantellinie oder seitlich versetzt dieser gegenüber angeordnet sind. Im ersten Fall tritt die Luft im wesentlichen parallel zum Ölzufuhrrohr und zur Achse des Ölnebels und im zweiten Fall spiralförmig zur Achse des Ölnebelkegels aus.The air outlet slots are each arranged on the flame-facing part of the jacket of the air pipe end piece. It is possible for the air outlet slots to be arranged exactly on the surface line facing the flame or laterally offset from it. In the first case the air exits essentially parallel to the oil feed pipe and to the axis of the oil mist and in the second case spirally to the axis of the oil mist cone.

Die Anordnung der Luftkanalrohre kann so getroffen sein, daß sie in der Nähe des Ölzufuhrrohrs verlaufen und in der Nähe des Auslasses der Ölzerstäubungseinrichtung radial nach außen abgebogen sind und dabei in die Luftrohrendstücke übergehen. Bei einer alternativen Anordnung ist vorgesehen, daß die Luftkanalrohre in einem größeren Teilkreis angeordnet sind und am äußeren Ende der Luftkanalendstücke in diese übergehen.The arrangement of the air duct pipes can be such that they run in the vicinity of the oil supply pipe and are bent radially outwards in the vicinity of the outlet of the oil atomization device and thereby pass into the air pipe end pieces. In an alternative arrangement, it is provided that the air duct tubes are arranged in a larger pitch circle and merge into the air duct end pieces at the outer end thereof.

Damit eine gute Rückströmung aufgrund der Injektorwirkung der Luftkanalendstücke erfolgen kann, befindet sich hinter diesen ein seitlicher Rezirkulationsraum. Der Abstand zwischen dem Brennerhals und den Luftkanalendstücken beträgt ein Mehrfaches des Durchmessers der Luftkanalendstücke.So that a good backflow can take place due to the injector effect of the air duct end pieces, there is a lateral recirculation space behind them. The distance between the burner neck and the air duct end pieces is a multiple of the diameter of the air duct end pieces.

Die Luftaustrittsschlitze haben eine Länge, die größer sein kann als der Abstand zwischen dem Auslaß der Ölzerstäubungseinrichtung und dem diesem am nächsten kommenden Ende der Luftaustrittsschlitze.The air outlet slots have a length that can be greater than the distance between the outlet of the oil atomization device and the closest end of the air outlet slots.

Nachfolgend werden drei Ausführungsbeispiele der Erfindung anhand der Zeichnungen näher erläutert. Es zeigen:

Fig. 1
einen Längsschnitt durch den Verbrennungskopf gemäß der Erfindung,
Fig.2
den Verbrennungskopf gemäß Fig. 1 in einer Ansicht von vorne,
Fig. 3
einen Querschnitt durch eines der Luftkanalendstücke in vergrößerter Darstellung zur Veranschaulichung der Rezirkulation,
Fig. 4
einen Querschnitt durch ein Luftkanalendstück mit einem dem Luftaustrittsschlitz zugeordneten Leitblech zur Erzeugung eines Dralles in einer der Fig. 3 entsprechenden Darstellungsweise,
Fig. 5
einen Längsschnitt durch einen Verbrennungskopf gemäß einem abgewandelten Ausführungsbeispiel der Erfindung,
Fig. 6
den Verbrennungskopf gemäß Fig. 5 in einer Ansicht von vorne,
Fig. 7
einen Längsschnitt durch einen weiteren Verbrennungskopf gemäß einem abgewandelten Ausführungsbeispiel der Erfindung und
Fig. 8
eine Ansicht von vorne auf einen Verbrennungskopf gemäß Fig. 7, wobei jedoch die Zahl der Luftkanalendstücke und deren Anordnung von derjenigen des Verbrennungskopfs gemäß Fig. 7 abweicht.
Three exemplary embodiments of the invention are explained in more detail below with reference to the drawings. Show it:
Fig. 1
2 shows a longitudinal section through the combustion head according to the invention,
Fig. 2
1 in a view from the front,
Fig. 3
3 shows a cross section through one of the air duct end pieces in an enlarged illustration to illustrate the recirculation,
Fig. 4
3 shows a cross section through an air duct end piece with a guide plate assigned to the air outlet slot for generating a swirl in a manner of illustration corresponding to FIG. 3,
Fig. 5
2 shows a longitudinal section through a combustion head according to a modified exemplary embodiment of the invention,
Fig. 6
5 in a view from the front,
Fig. 7
a longitudinal section through a further combustion head according to a modified embodiment of the invention and
Fig. 8
a view from the front of a combustion head according to FIG. 7, however, the number of air duct end pieces and their arrangement differs from that of the combustion head according to FIG. 7.

Fig. 1 zeigt einen Verbrennungskopf für einen Vergasungsölbrenner im Längsschnitt ohne die Wände der den Verbrennungskopf umgebenden Brennkammer. Der Verbrennungskopf ist an einem Brennerhals 1 befestigt, der in die Brennkammer hineinragt und durch eine kreisscheibenförmige Stirnplatte 2 abgedeckt ist, die in Fig. 2 in einer Draufsicht zu erkennen ist. Entlang der Mittellängsachse des Brennerhalses 1 erstreckt sich durch die Stirnplatte 2 ein Ölzufuhrrohr 3, das über eine Ölleitung mit einer Ölförderpumpe verbunden ist, die Öl von einem Öltank zum Verbrennungskopf fördert. An dem in Fig. 1 nach rechts weisenden vorderen Ende des Ölzufuhrrohres 3 ist eine Druckzerstäuberdüse 4 vorgesehen. Bei der Druckzerstäuberdüse 4 handelt es sich um eine Druckdralldüse oder Simplexdüse, die im Innern tangential angeordnete Wirbelkammerschlitze aufweist, um das Öl in eine Rotation zu versetzen, so daß nach dem Verlassen der Düsenbohrung 5 durch die Fliehkraft radial entweicht und einen Ölsprühkegel erzeugt. Der von der Ölförderpumpe gelieferte Druck liegt im Bereich zwischen 4 und 20 bar.Fig. 1 shows a combustion head for a gasification oil burner in longitudinal section without the walls of the combustion chamber surrounding the combustion head. The combustion head is fastened to a burner neck 1 which projects into the combustion chamber and is covered by a circular disk-shaped end plate 2, which can be seen in a top view in FIG. 2. An oil feed pipe 3 extends through the end plate 2 along the central longitudinal axis of the burner neck 1 and is connected via an oil line to an oil feed pump which conveys oil from an oil tank to the combustion head. At the front end of the oil supply pipe 3 pointing to the right in FIG. 1, a pressure atomizing nozzle 4 is provided. The pressure atomizer nozzle 4 is a pressure swirl nozzle or simplex nozzle which has tangentially arranged swirl chamber slots in the interior in order to set the oil into rotation, so that after leaving the nozzle bore 5 the centrifugal force escapes radially and generates an oil spray cone. The pressure supplied by the oil pump is in the range between 4 and 20 bar.

Der vor der Düsenbohrung 5 liegende Bereich des Verbrennungskopfes bildet eine Vergasungszone für den Ölnebel, der mit Hilfe einer oder zwei in der Zeichnung nicht dargestellten Zündelektroden gezündet werden kann.The area of the combustion head located in front of the nozzle bore 5 forms a gasification zone for the oil mist, which can be ignited with the help of one or two ignition electrodes, not shown in the drawing.

Die zur Verbrennung erforderliche Verbrennungsluft gelangt durch den Brennerhals 1 und acht Luftkanalrohre 6 bis 13 zu acht Luftkanalendstücken 14 bis 21.The combustion air required for the combustion passes through the burner neck 1 and eight air duct pipes 6 to 13 to eight air duct end pieces 14 to 21.

Fig. 5 zeigt gegenüber dem Ausführungsbeispiel gemäß Fig. 1 eine andere Variante der Verbrennungsluftführung. In diesem Fall gelangt die Luft durch den Brennerhals 1 in acht Luftkanalrohre 30 bis 37 zu acht Luftkanalendstücken 39 bis 46. Die Luftkanalendstücke 39 bis 46 haben bei dem in der Zeichnung dargestellten Ausführungsbeispiel die Gestalt von Rohrendstücken, die mit den in Fig. 5 nach rechts weisenden Enden der Luftkanalrohre 30 bis 37 verbunden sind. Dabei kann die Anordnung so getroffen werden, daß die Luftkanalrohre 30 bis 37 einen abgeknickten Abschnitt 47 aufweisen, der nach außen weg vom Ölzufuhrrohr 3 ragt und in die nach innen zur Ölzerstäuberdüse 4 ragenden Luftkanalendstücke 39 bis 46 mündet.5 shows another variant of the combustion air duct compared to the exemplary embodiment according to FIG. 1. In this case, the air passes through the burner neck 1 into eight air duct pipes 30 to 37 to eight air duct end pieces 39 to 46. The air duct end pieces 39 to 46 in the embodiment shown in the drawing have the shape of pipe end pieces that correspond to those in FIG. 5 to the right facing ends of the air duct pipes 30 to 37 are connected. The arrangement can be such that the air duct pipes 30 to 37 have a bent section 47 which projects outwards away from the oil supply pipe 3 and opens into the air duct end pieces 39 to 46 projecting inwards towards the oil atomizing nozzle 4.

Die Luftkanalendstücke 14 bis 21 haben bei dem in der Zeichnung dargestellten Ausführungsbeispiel die Gestalt von Rohrendstücken, die mit den in Fig. 1 nach rechts weisenden Enden der Luftkanalrohre 6 bis 13 verbunden sind. Dabei kann die Anordnung so getroffen sein, daß die Luftkanalrohre 6 bis 13 am vorderen Ende einen abgeknickten Abschnitt 22 aufweisen, der nach innen zum Ölzufuhrrohr 3 und zur Druckzerstäuberdüse 4 abgeknickt ist und an dem die Luftkanalendstücke 14 bis 21 rechtwinklig angeordnet sind, so daß die Luftkanalendstücke 14 bis 21 sich nicht im rechten Winkel zur Längsachse der Ölzerstäuberdüse 4 erstrecken, sondern etwas geneigt sind und somit entlang einer Kegelfläche angeordnet sind, deren Kegelspitze mit einem stumpfen Winkel im Bereich der Düsenbohrung 5 der Druckzerstäuberdüse 4 liegt.In the embodiment shown in the drawing, the air duct end pieces 14 to 21 have the shape of pipe end pieces which are connected to the ends of the air duct pipes 6 to 13 pointing to the right in FIG. 1. The arrangement can be such that the air duct pipes 6 to 13 have a bent section 22 at the front end, which is bent inwards towards the oil supply pipe 3 and the pressure atomizing nozzle 4 and on which the air duct end pieces 14 to 21 are arranged at right angles, so that the Air duct end pieces 14 to 21 do not extend at right angles to the longitudinal axis of the oil atomizing nozzle 4, but are somewhat inclined and are therefore arranged along a conical surface, the conical tip of which lies at an obtuse angle in the region of the nozzle bore 5 of the pressure atomizing nozzle 4.

Die Luftkanalendstücke 14 bis 21 und 39 bis 46, die in Fig. 2 und 6 in einer Ansicht von vorne zu erkennen sind, sind jeweils an ihren Enden durch Verschlußscheiben 23 und 48 verschlossen. Die in die Luftkanalrohre 6 bis 13 bzw. 30 bis 37 und Luftkanalendstücke 14 bis 21 bzw. 39 bis 46 mit Hilfe eines Gebläses eingebrachte Verbrennungsluft verläßt die Luftkanalendstücke 14 bis 21 bzw. 39 bis 46 über Luftaustrittsschlitze 24 bzw. 49, die im Mantel der Luftkanalendstücke 14 bis 21 bzw. 39 bis 46 auf der nach vorne weisenden Seite vorgesehen sind und sich über den größten Teil der Länge der Luftkanalendstücke 14 bis 21 bzw. 39 bis 46 erstrecken. Bei einem Ausführungsbeispiel der Erfindung sind die Luftaustrittsschlitze 24 bzw. 49 gegenüber der in der Fig. 2 dargestellten Anordnung gemäß Fig. 6 jeweils seitlich um den gleichen Betrag versetzt, so daß die austretende Verbrennungsluft nicht im wesentlichen nach vorne und in Richtung der verlängerten Achse des Ölzufuhrrohres geblasen wird, sondern zusätzlich eine tangentiale Komponente aufweist, durch die der Verbrennungsluft ein zusätzlicher Drall verliehen wird.The air duct end pieces 14 to 21 and 39 to 46, which can be seen in FIGS. 2 and 6 in a view from the front are, are closed at their ends by locking washers 23 and 48. The combustion air introduced into the air duct tubes 6 to 13 or 30 to 37 and air duct end pieces 14 to 21 or 39 to 46 with the aid of a blower leaves the air duct end pieces 14 to 21 or 39 to 46 via air outlet slots 24 or 49, which are in the jacket of the Air duct end pieces 14 to 21 or 39 to 46 are provided on the forward-facing side and extend over most of the length of the air duct end pieces 14 to 21 or 39 to 46. In one embodiment of the invention, the air outlet slots 24 and 49 are laterally offset by the same amount relative to the arrangement shown in FIG. 2 according to FIG. 6, so that the escaping combustion air is not essentially forward and in the direction of the elongated axis of the Oil supply pipe is blown, but also has a tangential component through which the combustion air is given an additional swirl.

Wenn nach dem Austreten des Ölnebels aus der Düsenbohrung 5 und dem Austreten der Verbrennungsluft aus den Luftaustrittsschlitzen 24 oder 49 mit Hilfe der in Fig. 1 und Fig. 5 nicht dargestellten Elektrode oder Elektroden der Ölnebel vor der Düsenbohrung 5 gezündet wird, erfolgt eine Verbrennung, deren Flamme mit Hilfe eines Sensors 25 erfaßt wird, wobei der Verbrennungskopf das Flammenbild eines Gelbbrenners aufweist, dennoch aber bezüglich der Schadstoffe die günstigen Eigenschaften eines Blaubrenners erzielt werden, weil durch die Luftaustrittsschlitze 24 bzw. 49 an den Luftkanalendstücken 14 bis 21 bzw. 39 bis 46 die in Fig. 3 veranschaulichte Injektorwirkung auftritt.If, after the oil mist emerges from the nozzle bore 5 and the combustion air emerges from the air outlet slots 24 or 49 using the electrode or electrodes (not shown in FIGS. 1 and 5), the oil mist is ignited in front of the nozzle bore 5, combustion takes place. whose flame is detected with the aid of a sensor 25, the combustion head having the flame pattern of a yellow burner, but nevertheless the favorable properties of a blue burner can be achieved with regard to the pollutants, because through the air outlet slots 24 and 49 on the air duct end pieces 14 to 21 and 39 to 46 the injector effect illustrated in FIG. 3 occurs.

Beim Austreten der Verbrennungsluft aus den Luftaustrittsschlitzen 24 oder 49 bildet sich seitlich der Verbrennungsschlitze 24 oder 49 durch das Mitreißen benachbarter Luftschichten ein Unterdruck. Dies führt dazu, daß insbesondere aus dem Bereich der Flammenwurzel 26 der in einem Abstand vor der Düsenbohrung 5 brennenden Flamme 27 Flammengase oder Rauchgase feuerraumintern entlang den Strömungspfeilen 28 angesaugt werden und vor der Düsenbohrung 5 mit dem dort auftretenden Ölsprühnebel in Berührung kommen und dadurch eine Vergasung des Ölsprühnebels bewirken.When the combustion air emerges from the air outlet slots 24 or 49, a negative pressure is formed to the side of the combustion slots 24 or 49 due to the entrainment of adjacent air layers. This leads to the fact that flame gases or flue gases are sucked in along the flow arrows 28 from the area of the flame root 26 of the flame 27 burning at a distance in front of the nozzle bore 5 and come into contact in front of the nozzle bore 5 with the oil spray which occurs there and thereby gasification of the oil spray.

Wenn die mit hoher Geschwindigkeit aus den Luftaustrittsschlitzen 24 oder 49 austretende Verbrennungsluft neben der axialen und radialen Komponente auch noch eine tangentiale Komponente erhalten soll, können die Schlitze wie bereits erwähnt seitlich versetzt werden oder in der in Fig. 4 dargestellten Weise mit einem Leitblech 29 versehen werden, das sich jeweils entlang einem Luftaustrittsschlitz 24 erstreckt und die austretende Verbrennungsluft seitlich ablenkt.If the combustion air emerging from the air outlet slots 24 or 49 at high speed is also to receive a tangential component in addition to the axial and radial components, the slots can be offset laterally, as already mentioned, or provided with a guide plate 29 in the manner shown in FIG. 4 be, which extends along an air outlet slot 24 and deflects the emerging combustion air laterally.

Auch die in Fig. 5 gezeigten Luftkanalendstücke 39 bis 46 können Luftaustrittsschlitze 49 mit einem wie in Fig. 4 gezeigtem Leitblech 29 aufweisen.The air duct end pieces 39 to 46 shown in FIG. 5 can also have air outlet slots 49 with a guide plate 29 as shown in FIG. 4.

Fig. 7 zeigt ein Ausführungsbeispiel der Erfindung, bei dem die bereits erwähnten Bauteile mit den gleichen Bezugszeichen wie bei der obigen Beschreibung versehen sind. Bei dem in Fig. 7 dargestellten Verbrennungskopf erkennt man den Brennerhals 1, der an seinem in Fig. 7 nach rechts weisenden Ende nicht durch eine Stirnplatte 2, sondern durch einen konischen Abschlußdeckel 32 verschlossen ist. Der konische Abschlußdeckel 32 verfügt ähnlich wie die Stirnplatte 2 über mehrere entlang seinem äußeren Umfang angeordnete Öffnungen, durch die Luft aus dem Inneren des Brennerhalses 1 in die Luftkanalrohre 6 bis 13 gelangen kann. Die Luftkanalrohre 6 bis 13 sind am konischen Abschlußdeckel 32 dichtend befestigt, so daß der konische Abschlußdeckel 32 einerseits die Aufgabe einer mechanischen Halterung und andererseits die Aufgabe hat, die Strömungsverhältnisse möglichst günstig zu gestalten.Fig. 7 shows an embodiment of the invention, in which the components already mentioned are provided with the same reference numerals as in the above description. In the combustion head shown in FIG. 7, the burner neck 1 can be seen which, at its end pointing to the right in FIG End cover 32 is closed. Similar to the end plate 2, the conical end cover 32 has a plurality of openings arranged along its outer circumference, through which air can get into the air duct tubes 6 to 13 from the inside of the burner neck 1. The air duct tubes 6 to 13 are sealingly attached to the conical end cover 32, so that the conical end cover 32 on the one hand has the task of a mechanical holder and on the other hand has the task of making the flow conditions as favorable as possible.

Die Luftkanalrohre 6 bis 13 leiten die Luft in mit diesen winklig verbundene Luftkanalendstücke 14 bis 21 ein, die mit Luftaustrittsschlitzen 24 versehen sind, welche in Fig. 8 besonders deutlich dargestellt sind. Gegenüber dem in Fig. 1 dargestellten Ausführungsbeispiel ist der Winkel zwischen den Luftkanalrohren 6 bis 13 und den Luftkanalendstücken 14 bis 21 stumpfer gestaltet. Je nach der gewünschten Leistung und nach den gewünschten Strömungsverhältnissen sind acht, neun oder zehn Luftkanalrohre 6 bis 13 mit den entsprechenden Luftkanalendstücken 14 bis 21 vorgesehen.The air duct pipes 6 to 13 introduce the air into air duct end pieces 14 to 21 which are connected at an angle to the latter and are provided with air outlet slots 24, which are shown particularly clearly in FIG. 8. Compared to the embodiment shown in FIG. 1, the angle between the air duct tubes 6 to 13 and the air duct end pieces 14 to 21 is made obtuse. Depending on the desired performance and the desired flow conditions, eight, nine or ten air duct pipes 6 to 13 with the corresponding air duct end pieces 14 to 21 are provided.

Am Scheitel des konischen Abschlußdeckels 32 befindet sich eine zentrische Öffnung 33 in einem geringen Abstand vor der Druckzerstäuberdüse 4. Die Druckzerstäuberdüse 4 ist wie bei den vorher beschriebenen Ausführungsbeispielen am vorderen Ende des Ölzufuhrrohres 3 befestigt, durch das in Richtung des Pfeils 34 das zum Verbrennen vorgesehene Öl gelangt. In Fig. 7 erkennt man weiterhin eine Ölzufuhreinrichtung 35, die das Vorwärmen des Öls gestattet. Außerdem erkennt man einen auf dem Ölzufuhrrohr 3 befestigten Halter 36 für eine Zündeinrichtung 37 mit Zündelektroden 38. Die Zündelektroden 38 sind über eine Zündleitung 39 mit einem Zündtrafo verbunden, der die zum Zünden des Öls erforderliche Hochspannung liefert, nachdem die Zufuhr von Luft in Richtung des Pfeils 40 und des Öls in Richtung des Pfeils 34 begonnen hat.At the apex of the conical end cap 32 there is a central opening 33 at a short distance in front of the pressure atomizing nozzle 4. The pressure atomizing nozzle 4 is, as in the previously described exemplary embodiments, fastened to the front end of the oil supply pipe 3, through which, in the direction of arrow 34, the one intended for combustion Oil arrives. 7 also shows an oil supply device 35 which allows the oil to be preheated. In addition, one can see a holder 36 fastened on the oil supply pipe 3 for an ignition device 37 with ignition electrodes 38. The ignition electrodes 38 are connected via an ignition line 39 to an ignition transformer which supplies the high voltage required to ignite the oil after the supply of air in the direction of arrow 40 and the oil in the direction of arrow 34 has started Has.

Fig. 8 zeigt einen Verbrennungskopf der Art gemäß Fig. 7 in einer Draufsicht von vorne. Der in Fig. 8 dargestellte Verbrennungskopf hat jedoch bezüglich der in Fig. 7 gezeigten Schnittebene eine andere Zahl der Luftkanalendstücke 14, 14' bis 21.FIG. 8 shows a combustion head of the type according to FIG. 7 in a top view from the front. However, the combustion head shown in FIG. 8 has a different number of air duct end pieces 14, 14 ′ to 21 with respect to the sectional plane shown in FIG. 7.

Claims (8)

  1. A burner head for a vaporising oil burner comprising an oil atomising device (4) having an oil feed pipe (3), a combustion air feed means which is disposed around the oil atomising device and which has air duct pipes (6 to 13, 30 to 37) and air duct end portions (14 to 21, 39 to 46) provided with air outlet slots (24, 29), and a closure plate (2, 32) which closes off a burner neck (1) of the burner head from a combustion chamber, wherein the air duct end portions (14 to 21, 39 to 46) are mounted to the ends of the air duct pipes (6 to 13, 30 to 37), which project into the combustion chamber, characterised in that the air duct pipes (6 to 13, 30 to 37) which supply the air duct end portions (14 to 21, 39 to 46) with combustion air are of a length, between the closure plate (2, 32) and the respectively associated air duct end portions (14 to 21, 39 to 46), which is a multiple of the diameter of the air duct end portions (14 to 21, 39 to 46), so that the spacing of the air duct end portions (14 to 21, 39 to 46) from the closure plate (2, 32) is also a multiple of the diameter of the air duct end portions (14 to 21, 39 to 46).
  2. A burner head according to claim 1 characterised in that the air duct pipes (6 to 13) extend substantially parallel to the oil feed pipe (3) and in the vicinity of the outlet (5) of the oil atomising device (4) are bent over radially outwardly and go into the air duct end portions (14 to 21).
  3. A burner head according to claim 1 characterised in that the air duct pipes (30 to 37) extend in a radially angled configuration relative to the oil feed pipe (3) pointing away from same, and in the vicinity of the outlet (5) of the oil atomising device (4) are bent over radially inwardly and go into the air duct end portions (39 to 46).
  4. A burner head according to one of claims 1 to 3 characterised in that the air duct end portions (14 to 21, 39 to 46) are fixed by way of air duct pipes (6 to 13, 30 to 37) along the outer edge of a conical closure cover (32) which closes off the burner neck (1).
  5. A burner head according to claim 4 characterised in that the closure cover (32) has at the apex an opening (33) for the oil which issues from the oil atomising device (4).
  6. A burner head according to one of claims 1 to 5 characterised in that the air duct end portions (14 to 21, 39 to 46) are arranged along a cone surface whose tip is disposed in the vicinity of the outlet (5) of the oil atomising device (4).
  7. A burner head according to one of claims 1 to 6 characterised in that the air outlet slots (24, 49) are arranged in laterally displaced relationship relative to the generatrix facing towards the flame (27) so that the combustion air leaves the air outlet slots (24, 49) along a spiral path.
  8. A burner head according to claim 7 characterised in that the air outlet slots (24, 49) are respectively arranged on the part of the periphery of the air duct end portions (14 to 21, 39 to 46), which part faces towards the flame.
EP90115233A 1989-08-23 1990-08-08 Burner head Expired - Lifetime EP0414050B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3927834A DE3927834A1 (en) 1989-08-23 1989-08-23 COMBUSTION HEAD
DE3927834 1989-08-23

Publications (3)

Publication Number Publication Date
EP0414050A2 EP0414050A2 (en) 1991-02-27
EP0414050A3 EP0414050A3 (en) 1992-01-08
EP0414050B1 true EP0414050B1 (en) 1994-12-28

Family

ID=6387704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90115233A Expired - Lifetime EP0414050B1 (en) 1989-08-23 1990-08-08 Burner head

Country Status (3)

Country Link
EP (1) EP0414050B1 (en)
AT (1) ATE116419T1 (en)
DE (2) DE3927834A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4327088A1 (en) * 1992-09-01 1994-03-03 Sighard Grohsmann Industrial burner with combustion chamber - has blower with integrated mixer for combustion air and fuel.
CN109764335A (en) * 2019-03-07 2019-05-17 上海凌云瑞升燃烧设备有限公司 A kind of burner tail gas cooling drop nitrogen device based on flue gas outside circulation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2410141C3 (en) * 1974-03-02 1978-10-26 Sieber, Rolf, 7501 Karlsbad Burners for fluid fuels
DE2554263A1 (en) * 1975-12-03 1977-06-16 Richard Fetzner Boiler burner system for use with liquid fuels - produces air flows around burner cone to prevent diffuser damage

Also Published As

Publication number Publication date
EP0414050A3 (en) 1992-01-08
ATE116419T1 (en) 1995-01-15
DE59008116D1 (en) 1995-02-09
EP0414050A2 (en) 1991-02-27
DE3927834A1 (en) 1991-02-28

Similar Documents

Publication Publication Date Title
DE2442895C2 (en) Device for feeding air and fuel into a combustion chamber
DE2834313C2 (en)
DE2345282B2 (en) Combustion device for gas turbine engines
EP0902233A1 (en) Combined pressurised atomising nozzle
DE2143520A1 (en) BURNER FOR FLARING GAS
EP0598189A1 (en) Pulverizer for an oil burner
EP0433789A1 (en) Method for a premix burning of a liquid fuel
DE2953648C2 (en) Liquid fuel burners
DE2552374C2 (en) Burners for liquid or gaseous fuel
DE2659089C3 (en) Burners, in particular for liquid fuels
EP1084368B1 (en) Fuel injector
EP0483554B1 (en) Method for minimising the NOx emissions from a combustion
EP0414050B1 (en) Burner head
DE4008692A1 (en) Forced draught oil burner mixer - has tapering tube bent radially inwards at forward end
DE3424031A1 (en) METHOD FOR BURNING A LIQUID OR SOLID, POWDERED FUEL
DE19535370B4 (en) Process for low-emission premix combustion in gas turbine combustion chambers
WO1979000468A1 (en) Oil-burner for low heating powers and process for its operation
DE2807186C2 (en) Mixing head for hydrocarbon burners, especially heating oil burners, with small fuel throughputs
CH650067A5 (en) Oil-atomising burner
DE4229525A1 (en) Mixing system for oil-atomising burner - has baffle plate forming bottom of vaporising cup inside tapering flame tube
DE3005042C2 (en) Liquid fuel burner with a swirl chamber
CH682765A5 (en) Burner with toroidal, cyclonic gas guide.
DE69607224T2 (en) Swiveling burner with seal to generate a split flow
DE19860785A1 (en) Atomizer to atomize liquid fuel in combustion chamber of gas turbine, for example, has fluidic device with annular outer channel formed between outer and inner pipe and delivering fluid under pressure to interact with spray cone
DE2528813C3 (en) Burner for liquid fuels with a mixture distributor body

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL

17P Request for examination filed

Effective date: 19920109

17Q First examination report despatched

Effective date: 19930312

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19941228

Ref country code: GB

Effective date: 19941228

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19941228

Ref country code: NL

Effective date: 19941228

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19941228

REF Corresponds to:

Ref document number: 116419

Country of ref document: AT

Date of ref document: 19950115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59008116

Country of ref document: DE

Date of ref document: 19950209

ET Fr: translation filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19941228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19950808

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19950831

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20010726

Year of fee payment: 12

Ref country code: FR

Payment date: 20010726

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010801

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20010810

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020831

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020831

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020831

BERE Be: lapsed

Owner name: *ABIG WERKE CARRY GROSS G.M.B.H. & CO. K.G.

Effective date: 20020831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030301

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030430

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST