EP0303052A1 - Gas burner - Google Patents

Gas burner Download PDF

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Publication number
EP0303052A1
EP0303052A1 EP88110907A EP88110907A EP0303052A1 EP 0303052 A1 EP0303052 A1 EP 0303052A1 EP 88110907 A EP88110907 A EP 88110907A EP 88110907 A EP88110907 A EP 88110907A EP 0303052 A1 EP0303052 A1 EP 0303052A1
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EP
European Patent Office
Prior art keywords
gas
outlet openings
mixture
air mixture
secondary air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88110907A
Other languages
German (de)
French (fr)
Other versions
EP0303052B1 (en
Inventor
Hans-Albrecht Kohlmann
Thomas Pieper
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.)
Vaillant BV
Original Assignee
Vaillant Austria GmbH
Nv Vaillant Sa
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Vaillant-Schonewelle BV
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Filing date
Publication date
Application filed by Vaillant Austria GmbH, Nv Vaillant Sa, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, Vaillant-Schonewelle BV filed Critical Vaillant Austria GmbH
Publication of EP0303052A1 publication Critical patent/EP0303052A1/en
Application granted granted Critical
Publication of EP0303052B1 publication Critical patent/EP0303052B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • 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
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone

Definitions

  • the invention relates to a gas burner with at least one fuel rod, the wall of which is penetrated on the upper side by outlet openings for a gas / primary air mixture.
  • the object of the invention is to achieve combustion that is as pollutant-free as possible.
  • the invention is based on the knowledge that this object can be achieved by the targeted supply of an additional gas-secondary air mixture or a gas in the area of the mouths of the mixture outlet openings of the burner rod.
  • guides for a gas-secondary air mixture or other gases are provided on the guides above the mixture outlet openings of the burner rod.
  • an air-enriched fuel gas which, due to its high air content, is no longer ignitable, i.e. the fuel gas content is less than 4.5% by volume (for H gas).
  • a pure fuel gas can also be considered as an admixture, and a fuel gas / air mixture with a fuel gas content of more than 13.4% by volume (for H gas).
  • the guides can flank the mixture outlet openings of the fuel rod arranged in droves, either in the longitudinal direction of the fuel rod or by means of distributors which run transversely to the axis of the fuel rod.
  • the guides can be formed by the outlet openings of mixture or gas distributors, which run laterally and parallel next to the burner rod.
  • the arrangement of such distributors is essentially problem-free and requires comparatively little effort.
  • tubular distributors In order to be able to determine and fix the target direction of the distributors well, it may be advantageous if these tubular distributors have a teardrop-shaped cross section and, with an outlet opening forming the drop tip, point exactly against the region located above the mixture outlet openings of the fuel rod.
  • flanking distributors can also be connected to one another via connecting lines which run transversely to the axis of the fuel rod and which have outlet openings for the gas / secondary air mixture or other gas which are arranged between the mixture outlet openings of the fuel rod arranged in droves. With this arrangement of connecting lines, the last-mentioned outlet openings are brought closer to the first-mentioned outlet openings of the fuel rod.
  • a closer neighborhood of both outlet openings can also be achieved in that a distributor for the gas-secondary air mixture or other gases at least partially encloses the fuel rod fed with the gas-primary air mixture, longitudinal sections in which the mixture outlet openings of the fuel rod with the gas -Primary air mixture are supplied, with longitudinal sections of the distributor, which have outlet openings for the gas-secondary air mixture or another gas, change in a constant sequence.
  • a distributor for the gas-secondary air mixture or other gas can comprise a tubular fuel rod fed with the gas-primary air mixture up to the two limits of its apex region having the mixture outlet openings and outlet openings for the gas at the two tips of its crescent-shaped cross section.
  • the target direction of the flanking outlet openings can be determined particularly well and reliably in this way, especially when the apex region is flattened.
  • a flanking distributor with supply lines for the gas-secondary air mixture or other gases running transversely to the axis of the fuel rod can be provided only on one side of the fuel rod.
  • FIG. 1 which illustrates the principle of the solution according to the invention
  • a gas burner 1 the mixture outlet opening 2 of which a gas-primary air mixture is supplied via a mixture supply line 3, is arranged within a closed combustion chamber 4.
  • the flame of this gas burner 1 is now additionally supplied with a gas-secondary air mixture via merely schematically indicated flanking guides 5, specifically this supply takes place in the area above the mixture outlet opening 2 and the flame root, i.e. in the diffusion area of the flame.
  • a gas-secondary air mixture pure fuel gas or another gas, e.g. Flue gas can be injected into the flame area via these guides 5.
  • the supply of the gas-secondary air mixture or fuel gas can be carried out in a controlled manner.
  • FIGS. 2 and 3 show the type of supply of the burner flames with such a mixture or gas more specifically, namely with a tubular fuel rod 6, the wall of which Has mixture outlet openings 2 arranged on the upper side for the gas-primary air mixture and flanked by guides for the gas-secondary air mixture which are directed into the flame area.
  • guides of this type are embodied by mixture distributors 7, which run parallel to the fuel rod 6 and likewise have outlet openings 8, which point obliquely into the region above the mixture outlet openings 2 of the fuel rod 6 and form the guides 5.
  • FIG. 4 also shows an embodiment according to which tubular distributors 7 for the gas-secondary air mixture or fuel gas, which run parallel to the side next to the likewise tubular fuel rod 6, flank this fuel rod 6 and affect the flanks of the fuel rod 6 with their round cross sections.
  • Such distributors 7 can have a circular cross-section according to FIG. 5 or also a drop-shaped cross-section according to FIG. 6, in the latter case their mouths 8 formed at the droplet tips are aimed at the area located above the mixture outlet openings 2 of the fuel rod 6.
  • flanking distributors 7 are connected to one another via connecting lines 9 running transversely to the axis of the fuel rod 6, which are arranged above the empty spaces between the multitude of mixture outlet openings 2 of the fuel rod 6 and even outlet openings 8 for the Have gas-secondary air mixture or the fuel gas.
  • This arrangement could also be reversed, whereby a gas-primary air mixture is guided in the distributors and the additional gas-secondary air mixture in fuel rod 6.
  • FIG. 9 to 13 illustrate an embodiment according to which a tubular distributor 7 of the gas-secondary air mixture (or fuel gas) encloses the fuel rod 6 supplied with the gas-primary air mixture according to FIG. 10, with longitudinal sections 10 and 11 of these two Guides 6 and 7, in which outlet openings 2 and 8 are provided for one and the other of the different mixtures, alternate with one another according to FIG.
  • the sections 11 of the distributor 7 which conduct the gas-secondary air mixture are connected to one another via its bottom region.
  • the outlet openings 8 for the gas-secondary air mixture (or fuel gas) can, as shown in FIGS. 12 and 13, be directed radially or obliquely against the region located above the outlet openings 2.
  • FIGS. 14 to 16 show embodiments in which a tube forming the distributor 7 for a gas-secondary air mixture has the likewise tubular fuel rod 6, which is fed with the gas-primary air mixture, up to the bilateral limits of its apex region penetrated by mixture outlet openings 2 12 includes and at the two ends of the crescent-shaped cross section, the outlet openings 8 for the gas-secondary air mixture (or fuel gas) forms or limited.
  • FIG. 16 shows a modified embodiment with a flattened apex region 12 of the fuel rod 6. This flattening facilitates the inflow of the gas-secondary air mixture to the outlet openings 2 of the burner rod 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Glass Compositions (AREA)
  • Gas Separation By Absorption (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

A gas burner has at least one burner rod (6), the wall of which is passed through on the upper side by outlet openings (2) for a gas mixture consisting of combustion gas and primary air. The region situated above these mixture outlet openings (2) is assigned guides (5), via which a mixture consisting of gas and secondary air or pure gas is supplied to the flames being formed above the outlet openings (2). The guides (5) can be formed by the outlet openings (8) of mixture or gas distributors (7) which run parallel next to the burner rod (6). Such distributors (7) can be interconnected by connection pipes (9) which run transversely to the axis of the burner rod (6) and which have outlet openings for the gas/secondary air mixture. Such a distributor (7) can also, however, partially enclose the burner rod (6), leaving the top region (12) with the mixture outlet openings (2) free and forming at the two boundaries of this top region outlet openings for the gas/secondary air mixture or other gases such as e.g. recycled smoke gas. <IMAGE>

Description

Die Erfindung betrifft einen Gasbrenner mit zumindest einem Brennstab, dessen Wandung oberseitig von Austrittsöffnungen für ein Gas-Primärluft-Gemisch durchsetzt ist.The invention relates to a gas burner with at least one fuel rod, the wall of which is penetrated on the upper side by outlet openings for a gas / primary air mixture.

Aufgabe der Erfindung ist es, eine möglichst schadstofffreie Verbrennung zu erzielen.The object of the invention is to achieve combustion that is as pollutant-free as possible.

Die Erfindung beruht auf der Erkenntnis, daß diese Aufgabe durch die gezielte Zufuhr eines zusätzlichen Gas-Sekundär­luft-Gemisches oder eines Gases in den Bereich der Mündungen der Gemischaustrittsöffnungen des Brennerstabes gelöst wer­den kann.The invention is based on the knowledge that this object can be achieved by the targeted supply of an additional gas-secondary air mixture or a gas in the area of the mouths of the mixture outlet openings of the burner rod.

Erfindungsgemäß sind deshalb bei einem Gasbrenner der eingangs bezeichneten Gattung auf den oberhalb der Gemischaustritts­öffnungen des Brennerstabes zielende Führungen für ein Gas-­Sekundärluft-Gemisch oder andere Gase, zum Beispiel zurück­geführtes Rauchgas, vorgesehen.According to the invention, therefore, in the case of a gas burner of the type described in the introduction, guides for a gas-secondary air mixture or other gases, for example recirculated flue gas, are provided on the guides above the mixture outlet openings of the burner rod.

Als ein den Brennerflammen zuzumischendes Gas-Sekundärluft-­Gemisch ist empfehlenswerterweise ein luftangereichertes Brenn­gas zu verwenden, das infolge seines hohen Luftgehaltes nicht mehr zündfähig ist, also daß der Brenngasanteil kleiner 4,5 Vol.-% (für H-Gas) beträgt. Es kann aber auch ein pures Brenn­gas als Zumischung in Betracht gezogen werden sowie ein Brenn­gas/Luft-Gemisch mit einem Brenngasanteil von mehr als 13,4 Vol.-% (für H-Gas).As a gas-secondary air mixture to be mixed with the burner flames, it is advisable to use an air-enriched fuel gas which, due to its high air content, is no longer ignitable, i.e. the fuel gas content is less than 4.5% by volume (for H gas). However, a pure fuel gas can also be considered as an admixture, and a fuel gas / air mixture with a fuel gas content of more than 13.4% by volume (for H gas).

Zu vermeiden ist jedenfalls, daß unverbrauchtes Sekundär­gas in den Abgaszug eintritt, wodurch eine starke CxHx-­Emission verursacht werden würde. Durch eine optimierte Art der Zufuhr des Gas-Sekundärluft-Gemisches oder sonstigen Gases kann die Gesamtluftzahl abgesenkt und der Wirkungsgrad der Verbrennung verbessert werden. Zunächst wird durch diese Zufuhr die Flammentemperatur verringert und die NOx-Emission dadurch herabgesetzt. Ein nicht zündfähiges Gemisch aus Gas und Sekundärluft verringert nämlich den Sauerstoff­gehalt dieser Sekundärluft und senkt dadurch die Flammen­temperatur. Wird hingegen pures Gas zugeführt,dienen die Abgase dessen Verbrennung der Reduzierung des Sauerstoff­gehaltes der Sekundärluft und es erfolgt gewissermaßen eine Stufenverbrennung.In any case, it must be avoided that unused secondary gas enters the exhaust gas flue, which would cause a strong C x H x emission. Through an optimized way The supply of the gas-secondary air mixture or other gas can lower the total air ratio and improve the efficiency of the combustion. First of all, the flame temperature is reduced by this supply and the NO x emission is thereby reduced. A non-ignitable mixture of gas and secondary air namely reduces the oxygen content of this secondary air and thereby lowers the flame temperature. If, on the other hand, pure gas is supplied, the exhaust gases are used to reduce the oxygen content of the secondary air and to a certain extent there is a step combustion.

Für eine im Sinne der Erfindung zielführende Anordnung der Führungen des Gas-Sekundärluft-Gemisches oder puren Gases ist vor allem die Zielrichtung dieser Führungen von wesentlicher Bedeutung und es stehen diesbezüglich im Rahmen der Erfindung verschiedenerlei Möglichkeiten offen, solche Anordnungen erfolgversprechend durchzuführen, ohne Gefahr zu laufen, daß unverbranntes Sekundärgas in den Abgasabzug gelangt.For an arrangement of the guides of the gas-secondary air mixture or pure gas in the sense of the invention, the direction of these guides is of primary importance and there are various possibilities within the scope of the invention to carry out such arrangements promisingly without running any risk that unburned secondary gas gets into the exhaust fume hood.

Beispielsweise können die Führungen die scharenweise angeordneten Gemischaustrittsöffnungen des Brennstabes flankieren, sei es in Längsrichtung des Brennstabes oder sei es mittels Verteilern, die quer zur Achse des Brennstabes verlaufen.For example, the guides can flank the mixture outlet openings of the fuel rod arranged in droves, either in the longitudinal direction of the fuel rod or by means of distributors which run transversely to the axis of the fuel rod.

Mit einer solchen flankierenden Anordnung der Führungen kann sehr zuverlässig in den Bereich oberhalb der Gemisch­austrittsöffnungen des Brennstabes gezielt werden.With such a flanking arrangement of the guides, the area above the mixture outlet openings of the fuel rod can be aimed very reliably.

So können die Führungen durch die Austrittsöffnungen von Gemisch- bzw. Gas-Verteilern gebildet sein, die seitlich und parallel neben dem Brennerstab verlaufen. Die Anordnung solcher Verteiler ist im wesentlichen problemfrei und erfordert einen vergleichsweise geringen Aufwand.For example, the guides can be formed by the outlet openings of mixture or gas distributors, which run laterally and parallel next to the burner rod. The arrangement of such distributors is essentially problem-free and requires comparatively little effort.

Bei Benutzung rohrförmiger Verteiler können diese mit ihren Querschnitten die Flanken des zugeordneten Brennstabes tangieren,wodurch sich der Raumbedarf der Verteiler ver­ringert. Diese Verteiler können einen kreisrunden Querschnitt aufweisen, so daß ihre Beschaffung und Bearbeitung auf keinerlei Schwierigkeiten stößt.When using tubular distributors, their cross sections can affect the flanks of the associated fuel rod, which reduces the space requirement of the distributors. These distributors can have a circular cross section, so that their procurement and processing do not encounter any difficulties.

Um die Zielrichtung der Verteiler gut bestimmen und fixieren zu können, ist es unter Umständen vorteilhaft, wenn diese rohrförmigen Verteiler einen tropfenförmigen Querschnitt aufweisen und mit einer die Tropfenspitze bildenden Austrittsöffnung exakt gegen den oberhalb der Gemischaustrittsöffnungen des Brennstabes gelegenen Bereich weisen.In order to be able to determine and fix the target direction of the distributors well, it may be advantageous if these tubular distributors have a teardrop-shaped cross section and, with an outlet opening forming the drop tip, point exactly against the region located above the mixture outlet openings of the fuel rod.

Man kann die flankierenden Verteiler aber auch über quer zur Achse des Brennstabes verlaufende Verbindungsleitungen miteinander verbinden, die zwischen den scharenweise ange­ordneten Gemischaustrittsöffnungen des Brennstabes ange­ordnete Austrittsöffnungen für das Gas-Sekundärluft-Gemisch oder andere Gas aufweisen. Mit dieser Anordnung von Ver­bindungsleitungen werden die letztgenannten Austritts­öffnungen den erstgenannten Austrittsöffnungen des Brenn­stabes näher gebracht.However, the flanking distributors can also be connected to one another via connecting lines which run transversely to the axis of the fuel rod and which have outlet openings for the gas / secondary air mixture or other gas which are arranged between the mixture outlet openings of the fuel rod arranged in droves. With this arrangement of connecting lines, the last-mentioned outlet openings are brought closer to the first-mentioned outlet openings of the fuel rod.

Eine nähere Nachbarschaft beiderlei Austrittsöffnungen kann auch dadurch erzielt werden, daß ein Verteiler für das Gas-Sekundärluft-Gemisch oder andere Gase den mit dem Gas-Primärluft-Gemisch gespeisten Brennstab zumindest teilweise umschließt, wobei Längsabschnitte, in denen die Gemischaustrittsöffnungen des Brennstabes mit dem Gas-Primär­luft-Gemisch versorgt sind, mit Längsabschnitten des Ver­teilers, die Austrittsöffnungen für das Gas-Sekundärluft-­Gemisch oder ein anderes Gas aufweisen, in steter Folge wechseln. Mit dieser Maßnahme erreicht man ein sehr inniges Zusammenwirken der verschiedenen Austrittsöffnungen im Sinne der Erfindung, u.zw. insbesondere dann, wenn die Austritts­öffnungen für das Gas-Sekundärluft-Gemisch oder andere Gase schräg gegen die oberhalb der benachbarten Austritsöffnungen für das Gas-Primärluft-Gemisch gelegenen Bereiche gerichtete Mündungen aufweisen.A closer neighborhood of both outlet openings can also be achieved in that a distributor for the gas-secondary air mixture or other gases at least partially encloses the fuel rod fed with the gas-primary air mixture, longitudinal sections in which the mixture outlet openings of the fuel rod with the gas -Primary air mixture are supplied, with longitudinal sections of the distributor, which have outlet openings for the gas-secondary air mixture or another gas, change in a constant sequence. With this measure, a very intimate interaction of the different outlet openings in the sense of the invention is achieved, etc. in particular when the outlet openings for the gas-secondary air mixture or other gases have openings which are directed obliquely towards the regions above the adjacent outlet openings for the gas-primary air mixture.

Schließlich kann ein Verteiler für das Gas-Sekundärluft-­Gemisch oder anderes Gas einen rohrförmigen, mit dem Gas-­Primärluft-Gemisch gespeisten Brennstab bis an die beiden Grenzen seines die Gemischaustrittsöffnungen aufweisenden Scheitelbereiches umfassen und an den beiden Spitzen seines sichelförmigen Querschnittes Austrittsöffnungen für das Gas-Sekundärluft-Gemisch oder andere Gase mit gegen den Scheitelbereich gerichteten Mündungen aufweisen. Die Ziel­richtung der flankierenden Austrittsöffnungen kann auf diese Weise besonders gut und zuverlässig bestimmt werden, insbe­sondere dann, wenn der Scheitelbereich abgeflacht ausgebildet wird.Finally, a distributor for the gas-secondary air mixture or other gas can comprise a tubular fuel rod fed with the gas-primary air mixture up to the two limits of its apex region having the mixture outlet openings and outlet openings for the gas at the two tips of its crescent-shaped cross section. Have secondary air mixture or other gases with mouths directed towards the apex area. The target direction of the flanking outlet openings can be determined particularly well and reliably in this way, especially when the apex region is flattened.

Selbstverständlich ist die Erfindung in ihren Einzelheiten mannigfach abwandelbar, so kann etwa zur Vereinfachung nur an einer Seite des Brennstabes ein flankierender Verteiler mit quer zur Achse des Brennstabes verlaufenden Zuführungs­leitungen für das Gas-Sekundärluft-Gemisch oder andere Gase vorgesehen sein.Of course, the details of the invention can be modified in many ways, for example, for simplification, a flanking distributor with supply lines for the gas-secondary air mixture or other gases running transversely to the axis of the fuel rod can be provided only on one side of the fuel rod.

Verschiedene Ausführungsformen solcher Führungen sind mit weiteren Erfindungsmerkmalen in den Zeichnungen dargestellt und nachstehend an Hand dieser Zeichnungen erläutert.Various embodiments of such guides are shown with further features of the invention in the drawings and explained below with reference to these drawings.

Im einzelnen zeigen

  • Fig.1 das Schema eines erfindungsgemäß ausgestatteten Gasbrenners,
  • Fig.2 eine praktikable Ausführungsform eines Stab­brenners in einem Querschnitt und
  • Fig.3 in einer Draufsicht,
  • Fig.4 eine abgewandelte Ausführungsvariante in einem schematischen Querschnitt durch die Brennstab­achse,
  • Fig.5 und 6 fakultative Ausführungsvarianten des Details V aus der Fig.4,
  • Fig.7 eine andere Ausführungsform eines Stabbrenners in einem Schnitt nach VII-VII der
  • Fig.8, die eine Draufsicht auf diesen Stabbrenner zeigt,
  • Fig.9 eine Teil-Draufsicht auf eine weitere Ausführungs­form und
  • Fig.10 den zugehörigen Querschnitt nach X-X der Fig.9, sowie
  • Fig.11 einen zugehörigen Teil-Längsschnitt nach XI-XI der Fig.10. Die
  • Fig. 12 und 13 zeigen Details XII bzw. XIII aus Fig.11 in größerem Maßstab und
  • Fig.14 stellt eine weitere Ausführungsform dar, von der ein Detail XV in
  • Fig.15 und eine Variante in
  • Fig.16 dargestellt sind.
Show in detail
  • 1 shows the diagram of a gas burner equipped according to the invention,
  • 2 shows a practical embodiment of a rod burner in a cross section and
  • 3 in a plan view,
  • 4 shows a modified embodiment variant in a schematic cross section through the fuel rod axis,
  • 5 and 6 optional design variants of the detail V from FIG. 4,
  • 7 shows another embodiment of a rod burner in a section according to VII-VII
  • 8, which shows a plan view of this rod burner,
  • 9 shows a partial top view of a further embodiment and
  • 10 the associated cross section according to XX of FIG. 9, and
  • 11 shows an associated partial longitudinal section according to XI-XI of FIG. 10. The
  • 12 and 13 show details XII and XIII from FIG. 11 on a larger scale and
  • 14 shows a further embodiment, of which a detail XV in
  • Fig. 15 and a variant in
  • Fig. 16 are shown.

Gemäß Fig.1, die das Prinzip der erfindungsgemäßen Lösung veranschaulicht, ist ein Gasbrenner 1, dessen Gemischaustritts­öffnung 2 ein Gas-Primärluft-Gemisch über eine Gemischzufuhr­leitung 3 zugeführt wird, innerhalb eines geschlossenen Brennraumes 4 angeordnet.According to FIG. 1, which illustrates the principle of the solution according to the invention, a gas burner 1, the mixture outlet opening 2 of which a gas-primary air mixture is supplied via a mixture supply line 3, is arranged within a closed combustion chamber 4.

Der Flamme dieses Gasbrenners 1 wird nun zusätzlich über bloß schematisch angedeutete flankierende Führungen 5 ein Gas-Sekundärluft-Gemisch zugeführt, und zwar erfolgt diese Zufuhr gezielt in den oberhalb der Gemischaustrittsöffnung 2 und der Flammenwurzel gelegenen Bereich, also in den Diffusions­bereich der Flamme. Anstelle eines Gas-Sekundärluft-Gemisches könnte auch pures Brenngas oder ein anderes Gas, z.B. Rauchgas, über diese Führungen 5 in den Flammenbereich injiziert werden.The flame of this gas burner 1 is now additionally supplied with a gas-secondary air mixture via merely schematically indicated flanking guides 5, specifically this supply takes place in the area above the mixture outlet opening 2 and the flame root, i.e. in the diffusion area of the flame. Instead of a gas-secondary air mixture, pure fuel gas or another gas, e.g. Flue gas can be injected into the flame area via these guides 5.

Bei einem geschlossenen Brennraum 4 kann die Zufuhr des Gas-Sekundärluft-Gemisches oder Brenngases kontrolliert durchgeführt werden.With a closed combustion chamber 4, the supply of the gas-secondary air mixture or fuel gas can be carried out in a controlled manner.

Fig.2 und 3 zeigt die Art der Versorgung der Brenner­flammen mit einem solchen Gemisch oder Gas konkreter, nämlich bei einem rohrförmigen Brennstab 6, dessen Wandung oberseitig scharenweise angeordnete Gemischaustrittsöffnugnen 2 für das Gas-Primärluft-Gemisch aufweist und der von in den Flammenbereich zielenden Führungen für das Gas-Sekundär­luft-Gemisch flankiert wird. Solche Führungen sind bei diesem Ausführungsbeispiel von Gemischverteilern 7 verkörpert, die parallel zum Brennstab 6 verlaufen und gleichfalls Aus­trittsöffnungen 8 aufweisen, die schräg in den oberhalb der Gemischaustrittsöffnungen 2 des Brennstabes 6 gelegenen Bereich weisen und die Führungen 5 bilden.2 and 3 show the type of supply of the burner flames with such a mixture or gas more specifically, namely with a tubular fuel rod 6, the wall of which Has mixture outlet openings 2 arranged on the upper side for the gas-primary air mixture and flanked by guides for the gas-secondary air mixture which are directed into the flame area. In this exemplary embodiment, guides of this type are embodied by mixture distributors 7, which run parallel to the fuel rod 6 and likewise have outlet openings 8, which point obliquely into the region above the mixture outlet openings 2 of the fuel rod 6 and form the guides 5.

Fig.4 zeigt gleichfalls eine Ausführungsform, derzufolge rohrförmige, seitlich neben dem gleichfalls rohrförmigen Brennstab 6 parallel verlaufende Verteiler 7 für das Gas-­Sekundärluft-Gemisch oder Brenngas diesen Brennstab 6 flankieren und mit ihren runden Querschnitten die Flanken des Brennstabes 6 tangieren. Solche Verteiler 7 können einen kreisförmigen Querschnitt nach Fig.5 oder auch einen tropfenförmigen Querschnitt nach Fig.6 aufweisen, in welch letzterem Fall ihre an den Tropfenspitzen gebildete Mündungen 8 gegen den oberhalb der Gemischaustrittsöffnungen 2 des Brenn­stabes 6 gelegenen Bereich zielen.FIG. 4 also shows an embodiment according to which tubular distributors 7 for the gas-secondary air mixture or fuel gas, which run parallel to the side next to the likewise tubular fuel rod 6, flank this fuel rod 6 and affect the flanks of the fuel rod 6 with their round cross sections. Such distributors 7 can have a circular cross-section according to FIG. 5 or also a drop-shaped cross-section according to FIG. 6, in the latter case their mouths 8 formed at the droplet tips are aimed at the area located above the mixture outlet openings 2 of the fuel rod 6.

Fig. 7 und 8 zeigen eine Ausführungsform , bei der die flankierenden Verteiler 7 über quer zur Achse des Brennstabes 6 verlaufende Verbindungsleitungen 9 miteinander verbunden sind, die oberhalb der Leerräume zwischen den scharenweise angeordneten Gemischaustrittsöffnungen 2 des Brennstabes 6 angeordnet sind und selbst Austrittsöffnungen 8 für das Gas-Sekundärluft-Gemisch oder das Brenngas aufweisen. Diese Anordnung könnte auch umgekehrt gestaltet werden, wobei in den Verteilern ein Gas-Primärluft-Gemisch geführt wird und in Brennstab 6 das zusätzliche Gas-Sekundärluft-Gemisch.7 and 8 show an embodiment in which the flanking distributors 7 are connected to one another via connecting lines 9 running transversely to the axis of the fuel rod 6, which are arranged above the empty spaces between the multitude of mixture outlet openings 2 of the fuel rod 6 and even outlet openings 8 for the Have gas-secondary air mixture or the fuel gas. This arrangement could also be reversed, whereby a gas-primary air mixture is guided in the distributors and the additional gas-secondary air mixture in fuel rod 6.

Fig. 9 bis 13 stellen eine Ausführungsform dar, dergemäß ein rohrförmiger Verteiler 7 des Gas-Sekundärluft-Gemisches (oder Brenngases) den mit dem Gas-Primärluft-Gemisch versorgten Brennstab 6 gemäß Fig.10 umschließt, wobei Längsabschnitte 10 bzw. 11 dieser beiden Führungen 6 bzw. 7, in denen Austritts­öffnungen 2 bzw. 8 für das eine und andere der verschiedenen Gemische vorgesehen sind, einander gemäß Fig.11 abwechseln.9 to 13 illustrate an embodiment according to which a tubular distributor 7 of the gas-secondary air mixture (or fuel gas) encloses the fuel rod 6 supplied with the gas-primary air mixture according to FIG. 10, with longitudinal sections 10 and 11 of these two Guides 6 and 7, in which outlet openings 2 and 8 are provided for one and the other of the different mixtures, alternate with one another according to FIG.

Die das Gas-Sekundärluft-Gemisch führenden Abschnitte 11 des Verteilers 7 sind über dessen Bodenbereich miteinander verbunden.The sections 11 of the distributor 7 which conduct the gas-secondary air mixture are connected to one another via its bottom region.

Die Austrittsöffnungen 8 für das Gas-Sekundärluft-Gemisch (bzw. Brenngas) können, wie die Fig. 12 bzw. 13 zeigen, radial oder schräg gegen den oberhalb der Austrittsöffnungen 2 gelegenen Bereich gerichtet sein.The outlet openings 8 for the gas-secondary air mixture (or fuel gas) can, as shown in FIGS. 12 and 13, be directed radially or obliquely against the region located above the outlet openings 2.

Schließlich zeigen die Fig. 14 bis 16 Ausführungsformen, bei denen ein den Verteiler 7 für ein Gas-Sekundärluft-Gemisch bildendes Rohr den gleichfalls rohrförmigen, mit dem Gas-­Primärluft-Gemisch gespeisten Brennstab 6 bis zu den beidseitigen Grenzen dessen von Gemischaustrittsöffnungen 2 durchsetzten Scheitelbereiches 12 umfaßt und an den beiden Enden des dadurch sichelförmigen Querschnittes die Austritts­öffnungen 8 für das Gas-Sekundärluft-Gemisch (bzw. Brenngas) bildet bzw. begrenzt.Finally, FIGS. 14 to 16 show embodiments in which a tube forming the distributor 7 for a gas-secondary air mixture has the likewise tubular fuel rod 6, which is fed with the gas-primary air mixture, up to the bilateral limits of its apex region penetrated by mixture outlet openings 2 12 includes and at the two ends of the crescent-shaped cross section, the outlet openings 8 for the gas-secondary air mixture (or fuel gas) forms or limited.

Die Fig. 16 zeigt eine abgewandelte Ausführungsform mit einem abgeflachten Scheitelbereich 12 des Brennstabes 6. Diese Abflachung erleichtert den Zustrom des Gas-Sekundärluft-­Gemisches zu den Austrittsöffnungen 2 des Brennerstabes 6.16 shows a modified embodiment with a flattened apex region 12 of the fuel rod 6. This flattening facilitates the inflow of the gas-secondary air mixture to the outlet openings 2 of the burner rod 6.

Claims (12)

1. Gasbrenner mit zumindest einem Brennstab, dessen Wandung oberseitig von Austrittsöffnungen für ein Gas-Primärluft-Gemisch durchsetzt ist, dadurch gekenn­zeichnet, daß auf den Bereich oberhalb dieser Austritts­öffnungen (2) zielende Führungen (5) für ein aus Brenngas und Sekundärluft bestehendes nicht zündfähiges Gemisch oder pures Inertgas vorgesehen sind.1. Gas burner with at least one fuel rod, the wall of which is penetrated at the top by outlet openings for a gas-primary air mixture, characterized in that guides (5) aiming at a region above these outlet openings (2) for a non-ignitable consisting of fuel gas and secondary air Mixture or pure inert gas are provided. 2. Gasbrenner nach Anspruch 1, dadurch gekennzeichnet, daß die Führungen (5) scharenweise angeordnete Gemisch­austrittsöffnungen (2) des Brennstabes (6) flankieren.2. Gas burner according to claim 1, characterized in that the guides (5) flanked mixture outlet openings (2) flank the fuel rod (6). 3. Gasbrenner nach den Ansprüchen 1 und 2, dadurch gekenn­zeichnet, daß die Führungen (5) durch die Austritts­öffnungen (8) von Gemisch- bzw. Gasverteilern (7) gebildet sind, die seitlich und parallel neben dem Brennerstab (6) verlaufen (Fig. 2 bis 6).3. Gas burner according to claims 1 and 2, characterized in that the guides (5) through the outlet openings (8) of mixture or gas distributors (7) are formed, which run laterally and parallel next to the burner rod (6) (Fig . 2 to 6). 4. Gasbrenner nach Anspruch 3, dadurch gekennzeichnet, daß rohrförmige Verteiler (7) mit ihren Querschnitten die Flanken des Brennstabes (6) tangieren (Fig. 4 bis 6).4. Gas burner according to claim 3, characterized in that tubular distributors (7) with their cross sections affect the flanks of the fuel rod (6) (Fig. 4 to 6). 5. Gasbrenner nach Anspruch 4, dadurch gekennzeichnet, daß die rohrförmigen Verteiler (7) einen kreisrunden Querschnitt aufweisen (Fig. 5).5. Gas burner according to claim 4, characterized in that the tubular distributor (7) have a circular cross section (Fig. 5). 6. Gasbrenner nach Anspruch 4, dadurch gekennzeichnet, daß die rohrförmigen Verteiler (7) einen tropfenförmigen Querschnitt aufweisen und mit einer die Tropfenspitze bildenden Austrittsöffnung (8) gegen den oberhalb der Gemisch-Austrittsöffnungen (2) des Brennstabes (6) gelegenen Bereich weisen (Fig. 6).6. Gas burner according to claim 4, characterized in that the tubular distributors (7) have a drop-shaped cross section and with an outlet opening forming the drop tip (8) against the area above the mixture outlet openings (2) of the fuel rod (6) located area ( Fig. 6). 7. Gasbrenner nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die flankierenden Verteiler (7) über quer zur Achse des Brennstabes (6) verlaufende Verbindungsleitungen (9) miteinander verbunden sind, die zwischen den scharenweise angeordneten Gemisch-Aus­trittsöffnungen (2) des Brennstabes (6) angeordnete Austrittsöffnungen (8) für das Gas-Sekundärluft-Gemisch oder andere Gase aufweisen (Fig. 7, 8).7. Gas burner according to one of claims 1 to 5, characterized in that the flanking distributors (7) are connected to one another via connecting lines (9) which run transversely to the axis of the fuel rod (6) and which are arranged between the flock-arranged mixture outlet openings (2). of the fuel rod (6) arranged outlet openings (8) for the gas-secondary air mixture or other gases (Fig. 7, 8). 8. Gasbrenner nach Anspruch 1, dadurch gekennzeichnet, daß ein Verteiler (7) für das Gas-Sekundärluft-Gemisch oder andere Gase den mit dem Gas-Primärluft-Gemisch gespeisten Brennstab (6) umschließt, wobei Längsabschnitte (10), in denen die Gemisch-Aus­trittsöffnungen (2) des Brennstabes (6) mit dem Gas-­Primärluft-Gemisch versorgt sind, mit Längsabschnitten (11) des Verteilers (7), die Austrittsöffnungen für das Gas-Sekundärluft-Gemisch aufweisen, in steter Folge einander abwechseln (Fig. 9 - 13).8. Gas burner according to claim 1, characterized in that a distributor (7) for the gas-secondary air mixture or other gases encloses the fuel rod (6) fed with the gas-primary air mixture, whereby longitudinal sections (10), in which the mixture outlet openings (2) of the fuel rod (6) are supplied with the gas-primary air mixture, with longitudinal sections (11) of the distributor (7), the outlet openings for the gas-secondary air mixture alternate with each other (Fig. 9 - 13). 9. Gasbrenner nach Anspruch 8, dadurch gekennzeichnet, daß die Austrittsöffnungen (8) für das Gas-Sekundärluft-­Gemisch oder andere Gase schräg gegen die oberhalb der benachbarten Austrittsöffnungen (2) für das Gas-­Primärluft-Gemisch gelegenen Bereiche gerichtete Mündungen aufweisen (Fig. 13).9. Gas burner according to claim 8, characterized in that the outlet openings (8) for the gas-secondary air mixture or other gases obliquely directed towards the areas above the adjacent outlet openings (2) for the gas-primary air mixture (Fig 13). 10. Gasbrenner nach Anspruch 1, dadurch gekennzeichnet, daß ein Verteiler (7) für das Gas-Sekundärluft-Gemisch oder pures Gas einen rohrförmigen, mit dem Gas-Primär­luft-Gemisch gespeisten Brennstab (6) bis an die beiden Grenzen seines die Gemisch-Austrittsöffnungen (2) aufweisenden Scheitelbereiches (12) umfaßt und an den beiden Spitzen seines sichelförmigen Querschnit­tes Austrittsöffnungen (8) für das Gas-Sekundärluft-­Gemisch oder andere Gase mit gegen den Scheitelbereich (12) gerichteten Mündungen aufweist (Fig. 14 - 16).10. Gas burner according to claim 1, characterized in that a distributor (7) for the gas-secondary air mixture or pure gas has a tubular fuel rod (6) fed with the gas-primary air mixture up to the two limits of its mixture. Includes apex area (12) having outlet openings (2) and has outlet openings (8) for the gas-secondary air mixture or other gases with mouths directed towards the apex area (12) at the two tips of its crescent-shaped cross section (FIGS. 14-16). 11. Gasbrenner nach Anspruch 10, dadurch gekennzeichnet, daß der Scheitelbereich (12) des Brennstabes (6) abgeflacht ist (Fig. 16).11. Gas burner according to claim 10, characterized in that the apex region (12) of the fuel rod (6) is flattened (Fig. 16). 12. Gasbrenner nach Anspruch 7, dadurch gekennzeichnet, daß nur ein flankierender Verteiler (7) mit quer zur Achse des Brennerstabes (6) verlaufenden Zuführungs­leitungen (9) für das Gas-Sekundärluft-Gemisch oder andere Gase vorhanden ist.12. Gas burner according to claim 7, characterized in that only a flanking distributor (7) with transverse to the axis of the burner rod (6) extending supply lines (9) for the gas-secondary air mixture or other gases is present.
EP88110907A 1987-07-15 1988-07-08 Gas burner Expired - Lifetime EP0303052B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1783/87 1987-07-15
AT0178387A AT393891B (en) 1987-07-15 1987-07-15 GAS BURNER

Publications (2)

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EP0303052A1 true EP0303052A1 (en) 1989-02-15
EP0303052B1 EP0303052B1 (en) 1992-03-04

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EP88110907A Expired - Lifetime EP0303052B1 (en) 1987-07-15 1988-07-08 Gas burner

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EP (1) EP0303052B1 (en)
AT (2) AT393891B (en)
DE (2) DE3868771D1 (en)
ES (1) ES2030797T3 (en)
GR (1) GR3004554T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579315A1 (en) * 1992-07-07 1994-01-19 Ingenieursburo P.I. Produkt Innovatie B.V. Burner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US763057A (en) * 1903-11-03 1904-06-21 Kern Burner Company Gas-radiator.
US1228579A (en) * 1916-06-08 1917-06-05 Simon N Mentel Stove.
DE411548C (en) * 1924-01-03 1925-03-28 Gustav Ahrens Gas heating furnace with return of the exhaust gases to the burner
FR1584798A (en) * 1967-09-09 1970-01-02

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE905086A (en) * 1985-07-11 1986-11-03 Vaillant Joh Gmbh & Co INSTANTANEOUS OR BATTERY WATER HEATER.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US763057A (en) * 1903-11-03 1904-06-21 Kern Burner Company Gas-radiator.
US1228579A (en) * 1916-06-08 1917-06-05 Simon N Mentel Stove.
DE411548C (en) * 1924-01-03 1925-03-28 Gustav Ahrens Gas heating furnace with return of the exhaust gases to the burner
FR1584798A (en) * 1967-09-09 1970-01-02

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579315A1 (en) * 1992-07-07 1994-01-19 Ingenieursburo P.I. Produkt Innovatie B.V. Burner

Also Published As

Publication number Publication date
ES2030797T3 (en) 1992-11-16
AT393891B (en) 1991-12-27
DE3823956A1 (en) 1989-01-26
ATA178387A (en) 1991-06-15
GR3004554T3 (en) 1993-04-28
DE3868771D1 (en) 1992-04-09
EP0303052B1 (en) 1992-03-04
ATE73216T1 (en) 1992-03-15

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