EP0062316B1 - Burner arrangement, especially for a gas burner - Google Patents

Burner arrangement, especially for a gas burner Download PDF

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Publication number
EP0062316B1
EP0062316B1 EP82102791A EP82102791A EP0062316B1 EP 0062316 B1 EP0062316 B1 EP 0062316B1 EP 82102791 A EP82102791 A EP 82102791A EP 82102791 A EP82102791 A EP 82102791A EP 0062316 B1 EP0062316 B1 EP 0062316B1
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EP
European Patent Office
Prior art keywords
fuel
air
mixing chamber
passages
wall
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
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EP82102791A
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German (de)
French (fr)
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EP0062316A1 (en
Inventor
Gustaaf Witteveen
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Smit Ovens BV
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SMIT OVENS BV
Smit Ovens BV
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Priority to AT82102791T priority Critical patent/ATE22166T1/en
Publication of EP0062316A1 publication Critical patent/EP0062316A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/60—Devices for simultaneous control of gas and combustion air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/027—Regulating fuel supply conjointly with air supply using mechanical means

Definitions

  • the invention relates to a burner arrangement, in particular for a gas burner, with a gas and an air supply line, both of which end in the area of a gas-air mixing chamber, with swirl-generating devices which create a vortex flow of the gas within the mixing chamber and in the downstream combustion zone Generate air mixture, at least a portion of the combustion air flowing laterally into the mixing chamber via channels which can be changed in cross-section and are embedded in the wall of the mixing chamber.
  • a so-called dual burner is shown in DE-OS2 729 321, in particular FIG. 12.
  • the known burner is primarily designed as an oil burner, it can also be operated with gas, the oil nozzle being bypassed with the aid of a channel which opens into the mixing chamber.
  • the gas supply is regulated by a rotatable perforated disc that gradually releases the channel by rotating the bore.
  • the air supply through channels opening laterally into the mixing chamber can be adjusted with the help of an actuator that changes the cross sections of the laterally opening channels to create a vortex.
  • Such a burner arrangement is also advantageously to be used, for example, to burn finely divided aerosols or dusts, which can be introduced either in a gas stream or in a compact form in the region of the strong combustion air flow.
  • the fuel gas or another combustible, gaseous substance is also introduced via the channels which can be changed in cross section.
  • the cross-section-changing element will be a lance that can be adjusted within the mixing zone, as is also proposed according to the prior art.
  • the lance tip can have one or more openings for the supply of fuel and / or air, it also being possible to control the conditions in the combustion chamber.
  • FR-B-2184 340 a burner arrangement for acid gases (rich in H 2 S) is known.
  • a gas supply line which can be closed with a curved, axially adjustable stopper part, opens centrally and at the end into a mixing and combustion chamber.
  • An open ring channel is arranged as an air supply opening peripherally to the mouth of the gas supply line. The air supply cannot be adjusted at the same time with the adjustment device for the plug of the gas line. The gas flowing around the sides of the plug part is caught by the air flow and taken away. Accordingly, the device according to FR-B-2184340 has no common control element and also no hollow strands for the gas supply, which open directly into the air flow.
  • FIG. 1 shows a cross section through a burner arrangement of the type that can be used, for example, when burning natural gas in a boiler in the order of 12000 kJ / h.
  • Natural gas or related gases or gas mixtures such as methass, town gas and the like, are primarily suitable as fuel. However, it is possible to introduce a fine carbon-air mixture or an oil-air aerosol.
  • the burner arrangement adjoins a boiler wall 2.
  • the burner arrangement 1 has a housing 3 which is essentially cylindrical in shape and comprises a plurality of parts arranged concentrically to one another. From the outside inward, the housing 3 initially surrounds a cylindrical air duct 4, to which combustion air is fed via a line 5 at a pressure above atmospheric pressure, for example 110-130 kPa can.
  • a cylindrical connecting piece 6 Concentrically within the air duct 4 is a cylindrical connecting piece 6, which is fitted and held with an end face 7 in a burner holding collar 8.
  • the nozzle part 6 is drilled out along its entire length.
  • the nozzle part 6 comprises a fuel-air mixing chamber 11, the volume of which can be changed by a lance 12 movable back and forth within the nozzle part 6.
  • the front part 13 of the lance 12 serves as a control member, as will be explained.
  • the lance 12 can be moved back and forth manually, for example, with the aid of a lever 14, with a pneumatic device or with similar devices as are known per se.
  • Numerous channels 15 open into the mixing chamber 11 from the side, which preferably have the shape of slots and which differ in their direction from the normal direction, i. H. contain a tangent to an imaginary circle within the mixing chamber 11 in its preferred direction. These channels 15 are therefore at the same time swirl-generating devices which generate a vortex flow with the aid of the air flowing through the air channel 4 within the mixing chamber and in the downstream combustion zone within the boiler space 10.
  • the channels 15 can be more or less closed with the aid of the lance 12, and the air supply can be metered.
  • the gas supply takes place via a feed line 17, which ends in a cylindrical distribution channel 18 and continues into a plurality of strands 19 which run within the connecting piece part 6 parallel to the axis of the lance 12.
  • ignition means not shown
  • the gas-air mixture burns within the casing tube 9 and in the boiler space 10.
  • a stable flame is generated in that the flow is relatively strongly swirled.
  • the front part 13 acts as a cross-sectional changing member for the entirety of the channels 15, so that the supply of the gas-air mixture can be controlled. As a result, the performance of the burner arrangement can be varied in a very simple manner.
  • FIG. 2 shows the fuel-air mixing chamber 11 in a somewhat more detailed representation with further details.
  • numerous slot-like channels 15, here for example twenty, are let into the nozzle part 6, through which the air can flow. Due to the corresponding tangential position of the slot-like channels 15, the air gets into a vortex shape.
  • a gas supply line 19 opens within a channel 15, the gas being carried along by the air.
  • the front part of the lance 12 carries a further feed channel 20 which ends in an opening 21. Through this channel 20, which is guided within the lance 16, liquid fuels can also be introduced, for example.
  • Figure 3 shows an embodiment in which a part of the gas line strands, here designated 23, opens into openings 24 which end on the outer end face 25 of the mixing chamber 11.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Abstract

1. A burner assembly, especially for a gas burner, comprising a fuel supply conduit (17, 18, 19) and an air supply conduit (5, 4, 15), both conduits opening in the area of a fuel/air mixing chamber (11) enclosed by a wall (tubular portion 6) ; including vortexproducing devices (15) which produce a vortex of the fuel/air mixture within the mixing chamber (11) and in the subsequently arranged combustion zone, wherein at least parts of both the combustion air and of the fuel flow into the mixing chamber (11) through passages (15) formed in the wall and adapted to be varied in cross-section by a common control element, characterized in that fuel and air supply takes place through at least a part of the passages (15) of variable cross-section, in such a manner that the fuel supply conduit includes one or more branching conduits (19) passing through the wall (tubular portion 6), with said branching conduits (19) opening into one or more of said passages (15), such that the flow of fuel introduced may be entrained by the air flow inside the passage (15) or passages (15), respectively.

Description

Die Erfindung bezieht sich auf eine Brenneranordnung, insbesondere für einen Gasbrenner, mit einer Gas- und einer Luftzufuhrleitung, die beide im Bereich einer Gas-Luft-Mischkammer enden, mit drallerzeugenden Vorrichtungen, die innerhalb der Mischkammer und in der nachgeordneten Verbrennungszone eine Wirbelströmung des Gas-Luft-Gemisches erzeugen, wobei wenigstens ein Teil der Verbrennungsluft seitlich in die Mischkammer über in die Mischkammer-Wandung eingelassene querschnittsveränderbare Kanäle einströmt.The invention relates to a burner arrangement, in particular for a gas burner, with a gas and an air supply line, both of which end in the area of a gas-air mixing chamber, with swirl-generating devices which create a vortex flow of the gas within the mixing chamber and in the downstream combustion zone Generate air mixture, at least a portion of the combustion air flowing laterally into the mixing chamber via channels which can be changed in cross-section and are embedded in the wall of the mixing chamber.

Aus der DE-OS2 729 321, insbesondere Figur 12, ist ein sogenannter Dual-Brenner dargestellt. Zwar ist der bekannte Brenner in erster Linie als Öl-Brenner konzipiert, er läßt sich jedoch auch mit Gas betreiben, wobei die Öldüse mit Hilfe eines Kanales umgangen wird, der innerhalb der Mischkammer mündet. Die Regelung der Gaszufuhr erfolgt hierbei durch eine drehbare Lochscheibe, die den Kanal durch Verdrehen der Bohrung nach und nach freigibt. Darüber hinaus kann die Luftzufuhr durch seitlich in die Mischkammer mündende Kanäle mit Hilfe eines Stelltriebes, der die Querschnitte der seitlich mündenden Kanäle verändert, regelbar eingestellt werden zu der Entstehung eines Wirbels.A so-called dual burner is shown in DE-OS2 729 321, in particular FIG. 12. Although the known burner is primarily designed as an oil burner, it can also be operated with gas, the oil nozzle being bypassed with the aid of a channel which opens into the mixing chamber. The gas supply is regulated by a rotatable perforated disc that gradually releases the channel by rotating the bore. In addition, the air supply through channels opening laterally into the mixing chamber can be adjusted with the help of an actuator that changes the cross sections of the laterally opening channels to create a vortex.

Es stellt sich die Aufgabe, bei einer Brenneranordnung der eingangs genannten Art die Luftenergie dazu auszunutzen, eine bessere Verteilung des Gases innerhalb des Luftstromes zu erreichen, wobei die Steuerung der Brennstoff- und Luftzufuhr in einfacher Weise vorgenommen werden kann.It is the task of using the air energy in a burner arrangement of the type mentioned at the outset to achieve a better distribution of the gas within the air flow, the control of the fuel and air supply being able to be carried out in a simple manner.

Diese Aufgabe wird gelöst bei einer Brenneranordnung der eingangs genannten Art, die die Merkmale gemäß dem kennzeichnenden Teil des Anspruches 1 aufweist.This object is achieved in a burner arrangement of the type mentioned at the outset, which has the features according to the characterizing part of claim 1.

Die Formulierung im kennzeichnenden Teil des Anspruches, «daß die Brennstoffzufuhrleitung einen oder mehrere in der Wandung verlaufende Stränge umfaßt, wobei der oder die Stränge in einem oder mehreren der Kanäle endet bzw. enden •, bedeutet sowohl, daß der jeweilige Kanal allein Gas zuführt ; es sei jedoch auch die Möglichkeit umfaßt, direkt in den Luftstrom den gasförmigen Brennstoff einzublasen und ihn vom Luftstrom mitnehmen zu lassen.The wording in the characterizing part of the claim "that the fuel supply line comprises one or more strands running in the wall, the streak or ends ending in one or more of the channels," means that the respective channel alone supplies gas; however, it is also possible to blow the gaseous fuel directly into the air flow and to have it carried away by the air flow.

Vorteilhaft ist eine derartige Brenneranordnung auch dazu zu verwenden, beispielsweise feinverteilte Aerosole oder Stäube zu verbrennen, die entweder in einem Gasstrom oder in kompakter Form in den Bereich der starken Verbrennungsluftströmung eingebracht werden können.Such a burner arrangement is also advantageously to be used, for example, to burn finely divided aerosols or dusts, which can be introduced either in a gas stream or in a compact form in the region of the strong combustion air flow.

Im Gegensatz zum Stand der Technik, bei dem ein zusätzlicher Gaskanal mit getrennten Organen erforderlich ist, wird im vorliegenden Fall das Brenngas bzw. ein anderer brennbarer, gasförmiger Stoff über die querschnittsveränderbaren Kanäle mit eingeführt.In contrast to the prior art, in which an additional gas channel with separate organs is required, in the present case the fuel gas or another combustible, gaseous substance is also introduced via the channels which can be changed in cross section.

Falls erforderlich, kann ein gewisser Gasüberschuß dadurch geschaffen werden, daß wenigstens ein weiterer Gasleitungsstrang an der äußeren Stirnwand der Mischzone endet. Dieser Strang wird dann nicht von dem querschnittsver- ändernden Organ erfaßt.If necessary, a certain excess of gas can be created in that at least one further gas line string ends at the outer end wall of the mixing zone. This strand is then not grasped by the organ which changes the cross section.

Üblicherweise wird das querschnittsverändernde Organ eine innerhalb der Mischzone verstellbare Lanze sein, wie dies auch nach dem Stand der Technik vorgeschlagen wird. Dabei kann die Lanzenspitze eine oder mehrere Öffnungen für die Brennstoff- und/oder Luftzufuhr aufweisen, wobei ebenfalls noch eine zusätzliche Steuerung der Verhältnisse in der Brennkammer möglich ist.Usually, the cross-section-changing element will be a lance that can be adjusted within the mixing zone, as is also proposed according to the prior art. The lance tip can have one or more openings for the supply of fuel and / or air, it also being possible to control the conditions in the combustion chamber.

Es sei außerdem auf die FR-B-2184 340 hingewiesen, nach der eine Brenneranordnung für « saure Gase (reich an H2S) bekannt ist. In eine Misch- und Brennkammer mündet zentrisch und stirnseitig eine Gaszufuhrleitung, die mit einem gekrümmten, achsial verstellbaren Stopfenteil verschließbar ist. Peripher zu der Mündung der Gaszufuhrleitung ist ein offener Ringkanal als Luftzufuhröffnung angeordnet. Die Luftzufuhr ist mit der Verstellvorrichtung für den Stopfen der Gasleitung nicht gleichzeitig verstellbar. Das um die Seiten des Stopfenteils herumströmende Gas wird vom Luftstrom erfaßt und mitgenommen. Demnach besitzt die Vorrichtung gemäß FR-B-2184340 kein gemeinsames Steuerorgan und auch keine hohlen Stränge für die Gaszufuhr, die direkt in den Luftstrom einmünden.Attention is also drawn to FR-B-2184 340, according to which a burner arrangement for acid gases (rich in H 2 S) is known. A gas supply line, which can be closed with a curved, axially adjustable stopper part, opens centrally and at the end into a mixing and combustion chamber. An open ring channel is arranged as an air supply opening peripherally to the mouth of the gas supply line. The air supply cannot be adjusted at the same time with the adjustment device for the plug of the gas line. The gas flowing around the sides of the plug part is caught by the air flow and taken away. Accordingly, the device according to FR-B-2184340 has no common control element and also no hollow strands for the gas supply, which open directly into the air flow.

Ausführungsbeispiele der Erfindung sind in der beigefügten Zeichnung dargestellt. Die nachfolgende Beschreibung erläutert diese Figuren, die im einzelnen zeigen :

  • Figur 1 einen Querschnitt durch eine Brenneranordnung, bei der das Erfindungsprinzip verwirklicht ist ;
  • Figur 2 eine vergrößerte Darstellung der Mischzone gemäß Figur 1 ;
  • Figur 3 eine weitere Ausführungsform in schematischer Darstellung.
Embodiments of the invention are shown in the accompanying drawing. The following description explains these figures, which show in detail:
  • 1 shows a cross section through a burner arrangement in which the principle of the invention is implemented;
  • FIG. 2 shows an enlarged illustration of the mixing zone according to FIG. 1;
  • Figure 3 shows a further embodiment in a schematic representation.

In der Figur 1 ist ein Querschnitt durch eine Brenneranordnung gezeigt, wie sie beispielsweise bei der Verbrennung von Erdgas in einem Heizkessel in der Größenordnung 12000 kJ/h verwendet werden kann.FIG. 1 shows a cross section through a burner arrangement of the type that can be used, for example, when burning natural gas in a boiler in the order of 12000 kJ / h.

Als Brennstoff eignet sich in erster Linie Erdgas oder verwandte Gase oder Gasgemische, wie Methaß, Stadtgas und dergleichen. Es ist jedoch aus möglich, ein feines Kohlenstoff-Luft-Gemisch oder ein ÖI-Luft-Aerosol einzuführen.Natural gas or related gases or gas mixtures, such as methass, town gas and the like, are primarily suitable as fuel. However, it is possible to introduce a fine carbon-air mixture or an oil-air aerosol.

Die Brenneranordnung, allgemein mit 1 bezeichnet, schließt sich hierbei an eine Kesselwand 2 an. Die Brenneranordnung 1 weist ein Gehäuse 3 auf, das im wesentlichen zylindrisch geformt ist und mehrere, konzentrisch zueinander angeordnete Teile umfaßt. Das Gehäuse 3 umgibt von außen nach innen gesehen zunächst einen zylindrischen Luftkanal 4, dem über eine Leitung 5 Verbrennungsluft unter einem über Atmosphären-Druck liegenden Druck, beispielsweise 110-130 kPa, zugeführt werden kann. Konzentrisch innerhalb des Luftkanales 4 liegt ein zylindrischer Stutzenteil 6, der mit einer Stirnseite 7 in einen Brennerhaltekranz 8 eingepaßt und gehalten ist. Der Brennerhaltekranz 8, der in einer konisch ausgeformten Öffnung mit anschließendem Mantelrohr 9 sich zum Kesselraum 10 hin öffnet, hält außerdem die äußere Wandung des Gehäuses 3, wie aus der Figur 1 ersichtlich ist.The burner arrangement, generally designated 1, adjoins a boiler wall 2. The burner arrangement 1 has a housing 3 which is essentially cylindrical in shape and comprises a plurality of parts arranged concentrically to one another. From the outside inward, the housing 3 initially surrounds a cylindrical air duct 4, to which combustion air is fed via a line 5 at a pressure above atmospheric pressure, for example 110-130 kPa can. Concentrically within the air duct 4 is a cylindrical connecting piece 6, which is fitted and held with an end face 7 in a burner holding collar 8. The burner holding collar 8, which opens in a conically shaped opening with a subsequent casing tube 9 to the boiler space 10, also holds the outer wall of the housing 3, as can be seen from FIG. 1.

Das Stutzenteil 6 ist auf seiner ganzen Länge zylindrisch ausgebohrt. Im vorderen Teil umfaßt das Stutzenteil 6 eine Brennstoff-Luft-Mischkammer 11, deren Volumen durch eine innerhalb des Stutzenteiles 6 hin und her bewegliche Lanze 12 veränderbar ist. Der Vorderteil 13 der Lanze 12 dient dabei als Stuerorgan, wie noch erläutert werden wird. Die Hin- und Herbeweglichkeit der Lanze 12 kann beispielsweise manuell mit Hilfe eines Hebels 14, mit einer pneumatischen Einrichtung oder mit ähnlichen Vorrichtungen erfolgen, wie sie an sich bekannt sind.The nozzle part 6 is drilled out along its entire length. In the front part, the nozzle part 6 comprises a fuel-air mixing chamber 11, the volume of which can be changed by a lance 12 movable back and forth within the nozzle part 6. The front part 13 of the lance 12 serves as a control member, as will be explained. The lance 12 can be moved back and forth manually, for example, with the aid of a lever 14, with a pneumatic device or with similar devices as are known per se.

In die Mischkammer 11 münden von der Seite her zahlreiche Kanäle 15, die vorzugsweise die Form von Schlitzen haben und die in ihrer Richtung von der Normalen-Richtung abweichen, d. h. in ihrer Vorzugsrichtung eine Tangente an einen imaginären Kreis innerhalb der Mischkammer 11 enthalten. Diese Kanäle 15 sind daher gleichzeitig drallerzeugende Vorrichtungen, die mit Hilfe der durch den Luftkanal 4 strömenden Luft innerhalb der Mischkammer und in der nachgeordneten Verbrennungszone innerhalb des Kesselraumes 10 eine Wirbelströmung erzeugen. Die Kanäle 15 können mit Hilfe der Lanze 12 mehr oder weniger zugestellt werden, wobei die Luftzufuhr dosiert werden kann.Numerous channels 15 open into the mixing chamber 11 from the side, which preferably have the shape of slots and which differ in their direction from the normal direction, i. H. contain a tangent to an imaginary circle within the mixing chamber 11 in its preferred direction. These channels 15 are therefore at the same time swirl-generating devices which generate a vortex flow with the aid of the air flowing through the air channel 4 within the mixing chamber and in the downstream combustion zone within the boiler space 10. The channels 15 can be more or less closed with the aid of the lance 12, and the air supply can be metered.

Die Gaszufuhr erfolgt über eine Zuleitung 17, die in einem zylindrischen Verteilungskanal 18 endet und sich in mehrere Stränge 19 fortsetzt, die innerhalb des Stutzenteiles 6 achsenparallel zur Achse der Lanze 12 verlaufen. Die Stränge 19, die demnach wenigstens teilweise innerhalb der Mischkammer-Wandung verlaufen, enden innerhalb der Luftzuführungskanäle 15, so daß das einströmende Gas direkt vom Luftstrom erfaßt und mit in die Wirbelströmung eingebracht wird. Nachdem das Gas durch (nicht dargestellte) Zündmittel entzündet ist, brennt das Gas-Luft-Gemisch innerhalb des Mantelrohres 9 und im Kesselraum 10. Dabei wird eine stabile Flamme dadurch erzeugt, daß die Strömung relativ stark verwirbelt ist. Durch Verstellung der Lanze 12 wirkt das Vorderteil 13 als querschnittsveränderndes Organ für die Gesamtheit der Kanäle 15, so daß die Zufuhr des Gas-Luft-Gemisches gesteuert werden kann. Hierdurch kann die Leistung der Brenneranordnung in sehr einfacher Weise variiert werden.The gas supply takes place via a feed line 17, which ends in a cylindrical distribution channel 18 and continues into a plurality of strands 19 which run within the connecting piece part 6 parallel to the axis of the lance 12. The strands 19, which thus at least partially extending within the mixing chamber-wall, ends within the Luftzuführun g skanäle 15 so that the inflowing gas is directly detected by the air stream and introduced with the swirl flow. After the gas is ignited by ignition means (not shown), the gas-air mixture burns within the casing tube 9 and in the boiler space 10. A stable flame is generated in that the flow is relatively strongly swirled. By adjusting the lance 12, the front part 13 acts as a cross-sectional changing member for the entirety of the channels 15, so that the supply of the gas-air mixture can be controlled. As a result, the performance of the burner arrangement can be varied in a very simple manner.

Figur 2 zeigt die Brennstoff-Luft-Mischkammer 11 in etwas detaillierterer Darstellung mit weiteren Einzelheiten. Wie deutlich erkennbar ist, sind in den Stutzenteil 6 zahlreiche schlitzartige Kanäle 15, hier beispielsweise zwanzig eingelassen, durch die die Luft einströmen kann. Durch entsprechende Tangentialstellung der schlitzartigen Kanäle 15 gerät die Luft in eine Wirbelstörmung. Gleichzeitig mündet ein Gaszuführungsstrang 19 innerhalb eines Kanals 15, wobei das Gas von der Luft mitgenommen wird. Das Vorderteil der Lanze 12 trägt in diesem Falle noch einen weiteren Zuführungskanal 20, der in einer Öffnung 21 endet. Durch diesen Kanal 20, der innerhalb der Lanze 16 geführt wird, können beispielsweise zusätzlich noch flüssige Brennstoffe eingeführt werden.Figure 2 shows the fuel-air mixing chamber 11 in a somewhat more detailed representation with further details. As can be clearly seen, numerous slot-like channels 15, here for example twenty, are let into the nozzle part 6, through which the air can flow. Due to the corresponding tangential position of the slot-like channels 15, the air gets into a vortex shape. At the same time, a gas supply line 19 opens within a channel 15, the gas being carried along by the air. In this case, the front part of the lance 12 carries a further feed channel 20 which ends in an opening 21. Through this channel 20, which is guided within the lance 16, liquid fuels can also be introduced, for example.

Figur 3 zeigt eine Ausführungsform, bei der ein Teil der Gasleitungsstränge, hier mit 23 bezeichnet, in Öffnungen 24 mündet, die an der äußeren Stirnseite 25 der Mischkammer 11 enden.Figure 3 shows an embodiment in which a part of the gas line strands, here designated 23, opens into openings 24 which end on the outer end face 25 of the mixing chamber 11.

Nachdem anhand der Figuren 1 bis 3 wesentliche Prinzipien an Ausführungsbeispielen erläutert worden sind, sollen im folgenden noch einige mögliche Abwandlungen erläutert werden :

  • a) Form der Kanäle 15
After the essential principles of exemplary embodiments have been explained with reference to FIGS. 1 to 3, a few possible modifications will be explained below:
  • a) Shape of the channels 15

Die Kanäle können eine rechteckige Querschnittsform, jedoch auch runde, ovale oder dreieckige Querschnittsform aufweisen, wie dies Versuche gezeigt haben. Wesentlich ist, daß eine gute Verwirbelung stattfindet, ohne daß ein zu großer Reibungsverlust der Luftstrahlen an den Wandungen der Kammer die verfügbare Energie zu stark beschneidet.

  • b) Form der Mischzone bzw. der Mischkammer
The channels can have a rectangular cross-sectional shape, but can also have a round, oval or triangular cross-sectional shape, as tests have shown. It is essential that there is good swirling without an excessive loss of friction of the air jets on the walls of the chamber excessively cutting the available energy.
  • b) Shape of the mixing zone or the mixing chamber

Die Mischzone oder Mischkammer kann zylindrisch sein. Sie kann aber auch, wie bereits bei der eingangs genannten DE-OS 2 729 321, treppenförmig oder sich trompetenförmig öffnend gestaltet sein.

  • c) Querschnittsveränderndes Organ
The mixing zone or mixing chamber can be cylindrical. However, as already mentioned in the aforementioned DE-OS 2 729 321, it can also be designed in a step-like or trumpet-like manner.
  • c) Cross-sectional organ

Neben der beschriebenen Lanze 12 können auch außen über die Kanäle 15 greifende Hülsen oder dergleichen verwendet werden, wie dies aus dem Stand der Technik bekannt ist.

  • d) Drallerzeugende Vorrichtungen
In addition to the lance 12 described, sleeves or the like can also be used on the outside over the channels 15, as is known from the prior art.
  • d) Swirl generating devices

Beschrieben sind besonders gerichtete Kanäle 15, anstelle dieser Kanäle können auch Luftleitbleche innerhalb der Hülse 6 oder der Mischkammer 11 eingebaut sein.Specially directed channels 15 are described; instead of these channels, air baffles can also be installed inside the sleeve 6 or the mixing chamber 11.

Claims (3)

1. A burner assembly, especially for a gas burner, comprising a fuel supply conduit (17, 18, 19) and an air supply conduit (5, 4, 15), both conduits opening in the area of a fuel/air mixing chamber (11) enclosed by a wall (tubular portion 6) ; including vortexproducing devices (15) which produce a vortex of the fuel/air mixture within the mixing chamber (11) and in the subsequently arranged combustion zone, wherein at least parts of both the combustion air and of the fuel flow into the mixing chamber (11) through passages (15) formed in the wall and adapted to be varied in cross-section by a common control element, characterized in that fuel and air supply takes place through at least a part of the passages (15) of variable cross-section, in such a manner that the fuel supply conduit includes one or more branching conduits (19) passing through the wall (tubular portion 6), with said branching conduits (19) opening into one or more of said passages (15), such that the flow of fuel introduced may be entrained by the air flow inside the passage (15) or passages (15), respectively.
2. The burner assembly according to claim 1, characterized in that at least one further gas branching conduit terminates at the outer front wall (7) of the fuel/air mixing chamber (11).
3. The burner assembly according to claim 1, comprising a lance (12) being adjustable within the mixing chamber (11) as the element to vary the cross-section, characterized in that the tip (13) of the lance includes one or more openings (21) for the supply of fuel and/or air.
EP82102791A 1981-04-03 1982-04-02 Burner arrangement, especially for a gas burner Expired EP0062316B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82102791T ATE22166T1 (en) 1981-04-03 1982-04-02 BURNER ARRANGEMENT, ESPECIALLY FOR A GAS BURNER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3113511 1981-04-03
DE3113511A DE3113511C2 (en) 1981-04-03 1981-04-03 Burner device for a gaseous fuel

Publications (2)

Publication Number Publication Date
EP0062316A1 EP0062316A1 (en) 1982-10-13
EP0062316B1 true EP0062316B1 (en) 1986-09-10

Family

ID=6129275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102791A Expired EP0062316B1 (en) 1981-04-03 1982-04-02 Burner arrangement, especially for a gas burner

Country Status (3)

Country Link
EP (1) EP0062316B1 (en)
AT (1) ATE22166T1 (en)
DE (1) DE3113511C2 (en)

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Publication number Priority date Publication date Assignee Title
US4498864A (en) * 1982-12-10 1985-02-12 Techmark Corporation Method and apparatus for uniformly drying moving webs
US4613303A (en) * 1983-06-23 1986-09-23 Combustion Engineering, Inc. Combustion air control in an in-line flame arrestor
DE3407343A1 (en) * 1984-02-29 1985-11-21 Smit Ovens Nijmegen B.V., Nijmegen POWER-CHANGEABLE BURNER DEVICE FOR A GAS BURNER
DE3523172C1 (en) * 1985-06-28 1986-12-11 Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk, 5142 Hückelhoven Device for burning inert coal dust
DE3708573A1 (en) * 1987-03-17 1988-09-29 Dungs Karl Gmbh & Co VALVE ARRANGEMENT
NL8700996A (en) * 1987-04-28 1988-11-16 Ir Paul Martin Hofmeester APPARATUS FOR MIXING GAS OR GASES WITH AIR IN AN ADJUSTABLE MIXING FOR A COMBUSTION MACHINE.
AT396824B (en) * 1990-03-27 1993-12-27 Vaillant Gmbh Premixing gas burner
DE4329971C2 (en) * 1993-09-04 1998-11-26 Johannes W Graat Burner device for a gaseous fuel
DE4418964A1 (en) * 1994-05-31 1995-12-07 Johannes Wilhelmus Graat Hollow cylindrical burner head and process for its manufacture
EP0699867A3 (en) 1994-09-03 1996-09-11 Johannes Wilhelmus Graat Burner device for gaseous fuels
EP2338000A4 (en) * 2008-09-22 2014-08-06 Darsell Karrington Air-flow-controlling rear housing member
CN108214871B (en) * 2017-12-29 2019-07-16 邯郸金隅太行水泥有限责任公司 The casting of the vertical ladder casting mold of rotary kiln burner and the application mold
CN110307539A (en) * 2018-03-20 2019-10-08 河南神玖复合材料有限公司 Anti- gas swirl combustion device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB162641A (en) * 1921-02-04 1922-05-01 Adolf Bachner Improvements in gas burners
US1350051A (en) * 1917-04-07 1920-08-17 Wilson Lloyd Gas-burner
DE2729321C2 (en) * 1977-06-29 1983-10-20 Smit Ovens Nijmegen B.V., Nijmegen Process for the combustion of liquid fuel and burner device for carrying out the process

Also Published As

Publication number Publication date
DE3113511C2 (en) 1986-07-10
ATE22166T1 (en) 1986-09-15
DE3113511A1 (en) 1982-10-14
EP0062316A1 (en) 1982-10-13

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