EP2564119A1 - Multi-flame burner with flame - Google Patents

Multi-flame burner with flame

Info

Publication number
EP2564119A1
EP2564119A1 EP11703445A EP11703445A EP2564119A1 EP 2564119 A1 EP2564119 A1 EP 2564119A1 EP 11703445 A EP11703445 A EP 11703445A EP 11703445 A EP11703445 A EP 11703445A EP 2564119 A1 EP2564119 A1 EP 2564119A1
Authority
EP
European Patent Office
Prior art keywords
burner
flame
nozzle
nozzles
auxiliary
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
EP11703445A
Other languages
German (de)
French (fr)
Other versions
EP2564119B1 (en
Inventor
Anton Imgrundt
Johann Stocker
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.)
Linde GmbH
Original Assignee
Linde 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 Linde GmbH filed Critical Linde GmbH
Priority to PL11703445T priority Critical patent/PL2564119T3/en
Publication of EP2564119A1 publication Critical patent/EP2564119A1/en
Application granted granted Critical
Publication of EP2564119B1 publication Critical patent/EP2564119B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
    • 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
    • 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
    • F23D14/56—Nozzles for spreading the flame over an area, e.g. for desurfacing of solid material, for surface hardening, or for heating workpieces
    • 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
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q3/00—Igniters using electrically-produced sparks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2207/00—Ignition devices associated with burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14003—Special features of gas burners with more than one nozzle

Definitions

  • the present invention relates to a multi-flame burner with Brenngasbeaufschlagbaren burner nozzles, in particular for thermal material processing methods, a brenngasbeetzbare burner nozzle of such Mehrflammen ⁇ burner, and a method for thermal material processing, in which such a multi-flame burner is used.
  • the present invention can be used for flame brazing, fusion bonding, for example, flame spray coating, hot forming, and flame hardening. This may also be in particular methods for preheating, reheating, soaking and hot forming, for example in mechanical engineering, steel and container construction, act. Also, for example, for drying, especially for drying before sandblasting, welding or signing, the invention can be used.
  • the flame heating is according to
  • DIN 8522 is a method in which a workpiece is heated to change its properties, such as to influence the resistance to deformation.
  • Flame heating is also used for preheating in welding, cutting and related metalworking processes.
  • sheets of more than 30 mm thickness made of S355 steel are preheated to 89 to 128 ° C immediately before cutting.
  • Temperatures of up to 200 ° C and alloy steels at temperatures between 100 and 400 ° C are used in carbon steels ⁇ material in this welding method.
  • flame blasting for example with acetylene
  • a burner nozzle assembly is directed onto a workpiece surface.
  • clean sheet surfaces for further processing can be achieved and remove rust, mill scale and scale layers easily and inexpensively.
  • flame spraying can be used to thermally treat concrete and natural stone surfaces in order, for example, to remove paints, coatings, oil spills or rubber abrasion and to create surfaces.
  • acetylene torches are frequently used.
  • Acetylene in comparison to other fuel gases extremely high flame Tempera ture of more than 3,000 ° C, which among other things on the posi tive of formation of the acetylene molecule (C 2 H 2) can be returned ⁇ .
  • Per kilogram of acetylene 8,714 are released for thermal use.
  • These properties of acetylene are therefore of particular interest in thermal heat processes, since the heat is all the faster the flame passes to the workpiece, the higher the Tempe ⁇ rature of the combustion flame.
  • Other advantages of acetylene include the high ignition speed. The thermal efficiency is better in the said method, the faster the hot combustion products impinge on the workpiece.
  • FIGS. 1A to 1C show such multi-flame burners.
  • FIG. 1A shows a conventional hand burner
  • FIG. 1B a so-called inguinal burner
  • FIG. 1C a lance burner are shown.
  • the illustrated burners have as common features a fuel gas supply 1, on the example ⁇ example, a gas mixture of acetylene and oxygen is supplied.
  • burner nozzles 3 are attached. By igniting the burner nozzles 3 in the case of fuel gas flowing out, working flames 4 are formed.
  • the burner nozzles may have regulating and / or adjusting devices 5.
  • all individual nozzles Before using a suitable burner, all individual nozzles, for example with pilot lights or spark plugs, must be ignited manually or automatically.
  • manual ignition of the burner it is for example an ignition flame passed along the burner nozzles or it is provided with ⁇ means of a dynamic pressure that is formed on all burner nozzles a flame.
  • the burner is close to a correspondingly large plate hold.
  • the operator of a corresponding facility has to ensure that a flame is formed at all burner nozzles (the mixture outlet points). While the manual ignition doing a visual inspection of the ignition devices is gangs possible, this possibility when automatable ⁇ th operation of a corresponding burner, which is usually an automatic ignition is not always given.
  • flashover is understood to mean the passing on of a pilot flame or burner flame from one burner nozzle to the next.
  • the other burner nozzles then ignite successively at the first burner nozzle, so they ignite.
  • the invention proposes a multi-flame burner with burner nozzles which can be charged with gas, in particular for thermal material processing methods, a combustion gas actable burner nozzle for such a multi-flame burner, and a method for thermal material processing with the features of the respective independent claims before.
  • fuel gas in the context of this application pure fuel gases, such as acetylene, methane,
  • Ethane, propane, butane, ethene, methyl acetylene or hydrogen but also any suitable gas mixtures and mixtures containing oxygen and fuel gas, as in ⁇ example fuel gas oxygen / compressed air / suction air mixtures, understood.
  • the sub-nozzle opening is passed through by the same fuel gas as the main nozzle hole and is advantageously provided with this and a fuel gas supply in fluid communication ⁇ .
  • the passing of a flame between individual burner nozzles of a Multi-flame burner can be significantly improved.
  • ⁇ by a complete flashover all flames of a multi-flame burner can be achieved safely and reliably as long as the burner head distance and the amount of fuel gas and / or composition (eg, an acetylene torch) are in the functional area.
  • the measures according to the invention no longer require that the burner be aligned directly with a workpiece. The risk of escape of unburnt fuel gases due to non-combusted burner and the resulting risk of explosion is reduced or eliminated.
  • working flame is understood to mean the respective main flame of a burner nozzle of a multi-flame burner, which is directed onto a workpiece and serves, for example, to heat this workpiece.
  • the working flame is usually generated either by a single nozzle, or by a Hauptdüsenanord ⁇ tion, in which a central nozzle is surrounded by annularly arranged around these other nozzles. If, instead of a main nozzle arrangement, a single nozzle is provided, this is included in the scope of the application by the term "main nozzle arrangement”.
  • a "by-flame” be ⁇ riding asked, caused by providing at least one sub-nozzle opening, and at least partially aligned to an adjacent nozzle flame.
  • the secondary flames are smaller than the main or working flames due to lower gas volumes flowing through the sub-nozzle openings. It is understood that in practice the area of a "flame” will not be clearly demarcated, so that a "working flame” and an “auxiliary flame” may also be flame areas of a corresponding overall flame.
  • the primary flame generated at the respective main and sub-nozzle holes for example, an acetylene combustion nozzle, at least partially ⁇ clearly distinguishable from each other visually.
  • the so-called scattered flame forming around a primary flame envelops the primary flame in the form of a total flame.
  • At least one auxiliary nozzle opening and / or at least one nozzle channel assigned to a corresponding auxiliary nozzle opening can be arranged at an angle to the main nozzle arrangement and / or a nozzle channel associated therewith.
  • a secondary jet opening through which fuel gas flows can, after being ignited, pass on a flame directly to an adjacent, not yet ignited, but fuel gas flow-through secondary jet opening.
  • the adjacent burner nozzle is ignited altogether and, in turn, due to the arrangement of the auxiliary nozzle openings, can pass on the flame to at least one further burner nozzle, thus igniting a burner arrangement.
  • a multi-flame burner of the type according to the invention advantageously has two, three or more secondary nozzle openings on at least one side of the main nozzle arrangement.
  • a suitable configuration or cross-sectional geometry of a burner flame and corresponding flame ⁇ low as a whole can be effected.
  • Such cross sectional geometry can be specifically adjusted, for example ⁇ game on the basis of a distance between individual ⁇ burners and / or the nature or pressure of a fuel gas used, so that a particularly effective transfer of burner flames is possible.
  • a multi-flame burner according to the invention is designed so that at least one of the burners serves to ignite at least one adjacent burner nozzle via at least one secondary flame. This can be achieved for example by suitable alignment of the auxiliary nozzle openings, their geometry, but also by suitable spacing of the burner nozzles. Due to the special Ausgestal ⁇ tion of the burner nozzles with sub-flames, it is only necessary to ignite a burner assembly, a burner, for example automatically, to zuz ⁇ the place, with a secure ignition of the entire burner is si ⁇ cheroli.
  • a multi-flame burner according to the invention can be designed as a hand burner or machine burner, for example as a strip burner or lance burner, in particular for operation with acetylene as the fuel gas.
  • lance and inguinal burner with linear Burner arrangement profit due to their tendency to tend to für für für Pradne Trent especially of the measures according to the invention.
  • a multi-flame burner of the type described has for ignition at least one burner nozzle, a manual Zündein ⁇ direction, a pilot flame, a spark plug or a piezo igniter, whereby the multi-flame burner is particularly suitable for automatic applications with non-manual ignition.
  • Brenngasbeetzschlagbaren burner nozzle is expressly made to the features of the previously explained multi-flame burner.
  • such Brenngasbeetzschlagbare burner nozzle is interchangeable availablebil ⁇ det, so that replaceable individual nozzles can be combined into a burner body to form a multi-flame burner and thereby the flame propagation can be optimized.
  • Also to the advantages and advantageous areas of application of the method according to the invention is made to the previously described features.
  • FIG. 1 shows multi-flame burners according to the prior art
  • Figure 2 shows a burner according to a particularly be ⁇ vorzugten embodiment of the invention in a perspective oblique view. shows a burner nozzle assembly according to a particularly preferred embodiment of the invention in plan view from above.
  • FIG. 4 shows a schematic side view of an arrangement of operating burner nozzles according to a particularly preferred embodiment of the invention.
  • FIGS. 1A to 1C show multi-flame burners according to the prior art.
  • FIG. 2 denoted overall by 10, shows a burner nozzle according to a particularly preferred embodiment of the invention Invention, which can be used for example in a multi-flame burner according to the invention.
  • the burner nozzle 10 has a burner nozzle head 20 and a burner nozzle foot 21. If it is in the Bren ⁇ nerdüse 10 to a replaceable nozzle, it can be attached to the Brennerdüsenfuß 21 in a burner main body.
  • a Schodüsenan ⁇ order 30 is provided, which has a main nozzle opening and this circular surrounding further nozzle openings.
  • the main nozzle assembly 30 is, as previously explained, configured to form a working flame.
  • the auxiliary nozzle openings 40 themselves, or their corresponding nozzle channels, can be offset angularly from the orientation of the main nozzle arrangement 30, so that a targeted alignment of the secondary flames in the direction of adjacent burner nozzles or their flames can be achieved.
  • FIG. 3 a total of 4 burner nozzles 11, 12, 13 and 14 according to a particularly preferred embodiment of the invention are shown in plan view.
  • the burner nozzles 11, 13 and 14 correspond to the burner nozzle 10 of FIG. 2.
  • the burner nozzle 12 has further, in the figure vertically pointing down Ne ⁇ bendüsenö réelleen 41, in the direction of a are aligned at right angles to the row of burner nozzles 11, 12 and 13 arranged burner nozzle 14.
  • the arrangement how it is illustrated in Figure 3, can be combined with Customized ⁇ rem advantage of a flashover or a flame distribution, as illustrated by the arrows 50, between a ⁇ individual burner nozzles 11, 12, 13 and 14 are achieved.
  • the illustrated burner nozzles 11, 12, 13 and 14 may be part of a multi-flame burner or a burner field of a multi-flame burner. It is understood that the configuration shown in Fi gur ⁇ 3 can be expanded and further by providing the nozzle holes 41 can be effected in additional directions 40, also a safe flashover 50th
  • FIG. 4 schematically shows a corresponding burner nozzle arrangement in operation.
  • a fuel gas passes out of the burners 15 via a main nozzle arrangement and side-nozzle openings 40 arranged laterally therefrom. This results in the formation of a main flame or working flame 60, which can be aligned with a workpiece.
  • the primary flame of this working flame is indicated at 70.
  • flames 80 are presented with entspre ⁇ sponding primary flames 90 in the figure.
  • the secondary flames 80 are at least partially aligned in the direction of adjacent nozzles, resulting in said particularly advantageous ignition.

Landscapes

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

Abstract

The invention relates to a multi-flame burner comprising burner nozzles (10-15) that can be supplied with combustible gas, especially for thermal material treatment methods. According to the invention, at least one of the burner nozzles (10-15) is provided with at least one secondary nozzle opening (40) arranged at the side of a main nozzle arrangement (30) used to produce a working flame (60, 70), said secondary nozzle opening being used to produce a secondary flame (80) in the direction of at least one adjacent burner nozzle (10-15).

Description

Mehrflammenbrenner mit Flammenweitergabe  Multi-flame burner with flame propagation
Die vorliegende Erfindung betrifft einen Mehrflammenbrenner mit brenngasbeaufschlagbaren Brennerdüsen, insbesondere für thermische Materialbearbeitungsverfahren, eine brenngasbeaufschlagbare Brennerdüse eines derartigen Mehrflammen¬ brenners, sowie ein Verfahren zur thermischen Materialbearbeitung, bei dem ein solcher Mehrflammenbrenner zum Einsatz kommt . The present invention relates to a multi-flame burner with Brenngasbeaufschlagbaren burner nozzles, in particular for thermal material processing methods, a brenngasbeaufschlagbare burner nozzle of such Mehrflammen ¬ burner, and a method for thermal material processing, in which such a multi-flame burner is used.
Stand der Technik State of the art
Wenngleich die vorliegende Erfindung nachfolgend unter Be¬ zugnahme auf bestimmte thermische Materialbearbeitungsver¬ fahren beschrieben wird, sei betont, dass die erfindungsge¬ mäßen Mehrflammenbrenner, ebenso wie die entsprechenden Brennerdüsen, auch in anderen Anwendungsbereichen vorteilhaft zum Einsatz kommen können. Beispielsweise kann die vorliegende Erfindung für das Flammlöten, das Schmelzverbinden, beispielsweise von Flammspritzschichten, die Warmformgebung und das Flammhärten verwendet werden. Hierbei kann es sich auch insbesondere um Verfahren zum Vorwärmen, Nachwärmen, Soaken und Warmumformen, beispielsweise im Maschinen-, Stahl- und Behälterbau, handeln. Auch beispielsweise zum Trocknen, insbesondere zum Trocknen vor dem Sandstrahlen, Schweißen oder Signieren kann die Erfindung verwendet werden. Beispielsweise handelt es sich beim Flammwärmen gemäß While the present invention will be described below Be ¬ zugnahme ¬ drive to certain thermal Materialbearbeitungsver be emphasized that the erfindungsge ¬ MAESSEN multi-flame burner as well as the corresponding burner nozzles, can advantageously be used also in other applications. For example, the present invention can be used for flame brazing, fusion bonding, for example, flame spray coating, hot forming, and flame hardening. This may also be in particular methods for preheating, reheating, soaking and hot forming, for example in mechanical engineering, steel and container construction, act. Also, for example, for drying, especially for drying before sandblasting, welding or signing, the invention can be used. For example, the flame heating is according to
DIN 8522 um ein Verfahren, bei dem ein Werkstück erwärmt wird, um seine Eigenschaften zu ändern, etwa um den Formänderungswiderstand zu beeinflussen. DIN 8522 is a method in which a workpiece is heated to change its properties, such as to influence the resistance to deformation.
Das Flammwärmen wird auch zum Vorwärmen beim Schweißen, Schneiden und bei verwandten Verfahren der Metallbearbeitung angewendet. Beispielsweise werden beim Brennschneiden Bleche von mehr als 30 mm Dicke aus S355-Stahl unmittelbar vor dem Schnitt auf 89 bis 128 °C vorgewärmt. Bei Kohlen¬ stoffstählen werden in Schweißverfahren hierzu Temperaturen von bis zu 200 °C und bei legierten Stählen Temperaturen zwischen 100 und 400 °C verwendet. Flame heating is also used for preheating in welding, cutting and related metalworking processes. For example, in flame cutting, sheets of more than 30 mm thickness made of S355 steel are preheated to 89 to 128 ° C immediately before cutting. Temperatures of up to 200 ° C and alloy steels at temperatures between 100 and 400 ° C are used in carbon steels ¬ material in this welding method.
Beim Flammstrahlen, beispielsweise mit Acetylen, wird eine Brennerdüsenanordnung auf eine Werkstückoberfläche gerichtet. Hierdurch lassen sich saubere Blechoberflächen für die Weiterverarbeitung erzielen und Rost, Walzhaut und Zunderschichten einfach und unaufwendig entfernen. Durch Flammstrahlen lassen sich neben Metall auch Beton und Natursteinoberflächen thermisch behandeln, um beispielsweise Anstriche, Beschichtungen, Ölverschmutzungen oder Gummiabrieb zu entfernen und Oberflächen zu gestalten. In flame blasting, for example with acetylene, a burner nozzle assembly is directed onto a workpiece surface. As a result, clean sheet surfaces for further processing can be achieved and remove rust, mill scale and scale layers easily and inexpensively. In addition to metal, flame spraying can be used to thermally treat concrete and natural stone surfaces in order, for example, to remove paints, coatings, oil spills or rubber abrasion and to create surfaces.
Im Rahmen der vorgestellten Anwendungen kommen häufig Ace tylenbrenner zum Einsatz. Acetylen weist im Vergleich zu anderen Brenngasen eine außerordentlich hohe Flammtempera tur von über 3.000 °C auf, die unter anderem auf die posi tive Bildungsenthalpie des Acetylenmoleküls (C2H2) zurück¬ geführt werden kann. Pro Kilogramm Acetylen werden 8.714 zur thermischen Nutzung frei. Diese Eigenschaften von Ace tylen sind bei thermischen Wärmeverfahren deshalb von besonderem Interesse, da hier die Wärme umso schneller aus der Flamme auf das Werkstück übergeht, je höher die Tempe¬ ratur der Brennflamme ist. Weitere Vorteile des Acetylens beinhalten die hohe Zündgeschwindigkeit. Der thermische Wirkungsgrad ist in dem genannten Verfahren umso besser, je schneller die heißen Verbrennungsprodukte auf das Werkstück auftreffen. Diese Anforderung stellt sich besonders beim Wärmen von metallischen Werkstoffen mit hoher Wärmeableitung, zum Beispiel bei Stahl, Kupfer und Aluminium. Im Rahmen der genannten Verfahren kommen häufig Mehrflammenbrenner zum Einsatz, also Brenneranordnungen, die Brennerdüsen (Einzeldüsen) aufweisen, welche von einer gemeinsamen Brenngasquelle versorgt werden. In den Figuren 1A bis IC sind derartige Mehrflammenbrenner dargestellt. Figur 1A zeigt einen üblichen Handbrenner, in Figur 1B ist ein sogenannter Leistenbrenner und in Figur IC ein Lanzenbrenner dargestellt. Die abgebildeten Brenner weisen als gemeinsame Merkmale eine Brenngaszuführung 1 auf, über die beispiels¬ weise ein Gasgemisch aus Acetylen und Sauerstoff zugeführt wird. An einer Gasführungs- und Halteeinrichtung bzw. einem Brennergrundkörper 2 sind Brennerdüsen 3 angebracht. Durch Zünden der Brennerdüsen 3 bei ausströmendem Brenngas bilden sich Arbeitsflammen 4 aus. Die Brennerdüsen können Regel- und/oder Versteileinrichtungen 5 aufweisen. As part of the applications presented, acetylene torches are frequently used. Acetylene, in comparison to other fuel gases extremely high flame Tempera ture of more than 3,000 ° C, which among other things on the posi tive of formation of the acetylene molecule (C 2 H 2) can be returned ¬. Per kilogram of acetylene 8,714 are released for thermal use. These properties of acetylene are therefore of particular interest in thermal heat processes, since the heat is all the faster the flame passes to the workpiece, the higher the Tempe ¬ rature of the combustion flame. Other advantages of acetylene include the high ignition speed. The thermal efficiency is better in the said method, the faster the hot combustion products impinge on the workpiece. This requirement arises in particular when heating metallic materials with high heat dissipation, for example in steel, copper and aluminum. In the context of the methods mentioned, multi-flame burners are frequently used, that is to say burner arrangements which have burner nozzles (individual nozzles) which are supplied by a common fuel gas source. FIGS. 1A to 1C show such multi-flame burners. FIG. 1A shows a conventional hand burner, in FIG. 1B a so-called inguinal burner and in FIG. 1C a lance burner are shown. The illustrated burners have as common features a fuel gas supply 1, on the example ¬ example, a gas mixture of acetylene and oxygen is supplied. At a Gasführungs- and holding device or a burner body 2 burner nozzles 3 are attached. By igniting the burner nozzles 3 in the case of fuel gas flowing out, working flames 4 are formed. The burner nozzles may have regulating and / or adjusting devices 5.
Vor dem Einsatz eines entsprechenden Brenners sind alle Einzeldüsen, beispielsweise mit Zündflammen oder Zündkerzen, manuell oder automatisch zu zünden. Beim manuellen Zünden des Brenners wird dabei beispielsweise eine Zünd- flamme an den Brennerdüsen entlanggeführt oder es wird mit¬ tels eines Staudrucks dafür gesorgt, dass sich an allen Brennerdüsen eine Flamme ausbildet. Dafür ist der Brenner beispielsweise nahe an ein entsprechend großes Blech zu halten. Der Betreiber einer entsprechenden Einrichtung hat dafür zu sorgen, dass sich an allen Brennerdüsen (den Gemischaustrittsstellen) eine Flamme ausbildet. Während beim manuellen Zünden dabei eine visuelle Kontrolle des Zündvor- gangs möglich ist, ist diese Möglichkeit beim automatisier¬ ten Betrieb eines entsprechenden Brenners, bei dem in der Regel auch eine automatische Zündung erfolgt, nicht immer gegeben. Beim automatisierten Brennerbetrieb bereitet das sogenannte "Durchzünden" aller Flammen häufig Schwierigkei- ten. Beispielsweise verschlechtert sich die Durchzündnei- gung, wenn der Brenner nicht auf ein Werkstück ausgerichtet oder die Geometrie des Werkstücks ungeeignet oder der Ab¬ stand zwischen den Brennerdüsen zu groß ist. Before using a suitable burner, all individual nozzles, for example with pilot lights or spark plugs, must be ignited manually or automatically. During manual ignition of the burner it is for example an ignition flame passed along the burner nozzles or it is provided with ¬ means of a dynamic pressure that is formed on all burner nozzles a flame. For example, the burner is close to a correspondingly large plate hold. The operator of a corresponding facility has to ensure that a flame is formed at all burner nozzles (the mixture outlet points). While the manual ignition doing a visual inspection of the ignition devices is gangs possible, this possibility when automatable ¬ th operation of a corresponding burner, which is usually an automatic ignition is not always given. In automated burner operation, the so-called "burning through" of all flames often causes difficulties. For example, the tendency to catch fire deteriorates if the burner is not aligned with a workpiece or the geometry of the workpiece is unsuitable or the distance between the burner nozzles is too great.
Unter "Durchzündung" sei im Rahmen dieser Anmeldung die Weitergabe einer Zündflamme bzw. Brennerflamme von einer Brennerdüse zur nächsten verstanden. Die weiteren Brennerdüsen entzünden sich anschließend nacheinander an der ersten Brennerdüse, zünden also durch. For the purposes of this application, the term "flashover" is understood to mean the passing on of a pilot flame or burner flame from one burner nozzle to the next. The other burner nozzles then ignite successively at the first burner nozzle, so they ignite.
Ist die Durchzündung nicht erfolgreich, können unverbrannte Brenngase entweichen. Werden keine zusätzlichen Sicherheitsvorkehrungen getroffen, reichern sich Brenngase in der Umgebung des Brenners an und es entsteht Explosionsgefahr. If the ignition is unsuccessful, unburned fuel gases can escape. If no additional safety precautions are taken, fuel gases accumulate in the vicinity of the burner and there is a danger of explosion.
Vor diesem Hintergrund besteht der Bedarf nach Mehrflammenbrennern mit verbesserten Durchzündeigenschaften . Against this background, there is a need for multi-flame burners with improved transmission properties.
Offenbarung der Erfindung Disclosure of the invention
Die Erfindung schlägt einen Mehrflammenbrenner mit brenn- gasbeaufschlagbaren Brennerdüsen, insbesondere für thermische Materialbearbeitungsverfahren, eine brenngas- beaufschlagbare Brennerdüse für einen derartigen Mehrflammenbrenner, sowie ein Verfahren zur thermischen Materialbearbeitung mit dem Merkmalen der jeweiligen unabhängigen Patentansprüche vor. The invention proposes a multi-flame burner with burner nozzles which can be charged with gas, in particular for thermal material processing methods, a combustion gas actable burner nozzle for such a multi-flame burner, and a method for thermal material processing with the features of the respective independent claims before.
Bevorzugte Ausgestaltungen sind Gegenstand der jeweiligen Unteransprüche sowie der nachfolgenden Beschreibung. Preferred embodiments are the subject of the respective subclaims and the following description.
Unter dem Begriff "Brenngas" seien im Rahmen dieser Anmel- dung reine Brenngase, beispielsweise Acetylen, Methan,The term "fuel gas" in the context of this application pure fuel gases, such as acetylene, methane,
Ethan, Propan, Butan, Ethen, Methylacetylen oder Wasserstoff, aber auch beliebige geeignete Gasgemische und auch Gemische, die Sauerstoff und Brenngas enthalten, wie bei¬ spielsweise Brenngas-Sauerstoff/Druckluft/Saugluft- Gemische, verstanden. Ethane, propane, butane, ethene, methyl acetylene or hydrogen, but also any suitable gas mixtures and mixtures containing oxygen and fuel gas, as in ¬ example fuel gas oxygen / compressed air / suction air mixtures, understood.
Erfindungsgemäß weist wenigstens eine der Brennerdüsen ei¬ nes Mehrflammenbrenners wenigstens eine seitlich einer Hauptdüsenanordnung zur Erzeugung einer Arbeitsflamme ange- ordnete Nebendüsenöffnung auf. Die Nebendüsenöffnung wird vom gleichen Brenngas wie die Hauptdüsenöffnung durchströmt und steht vorteilhafterweise mit dieser und einer Brenngas¬ versorgung in Fluidverbindung . Durch die Bereitstellung und eine geeignete Anordnung wenigstens einer Nebendüsenöffnung kommt es nach dem Zünden zur Ausbildung wenigstens einer Nebenflamme, deren Ausrichtung eine Richtungskomponente (Vektorkomponente) in Rich¬ tung der benachbarten Brenndüse aufweist, die also According to the invention at least one of the burner nozzles ei ¬ nes multi-flame burner, at least one side of a main nozzle arrangement for generating a working flame reasonable arranged sub-nozzle opening. The sub-nozzle opening is passed through by the same fuel gas as the main nozzle hole and is advantageously provided with this and a fuel gas supply in fluid communication ¬. By providing a suitable arrangement and at least one sub-nozzle opening occurs after ignition to form at least a secondary flame whose orientation has a direction component (vector component) in Rich ¬ tung the adjacent combustion nozzle, the so
zweckmäßigerweise in Richtung einer Arbeits- oder Neben¬ flamme einer benachbarten Brennerdüse ausgerichtet ist. Durch die erfindungsgemäßen Maßnahmen kann dabei die Weitergabe einer Flamme zwischen einzelnen Brennerdüsen eines Mehrflammenbrenners signifikant verbessert werden. Hier¬ durch kann ein vollständiges Durchzünden aller Flammen eines Mehrflammenbrenners sicher und zuverlässig erreicht werden, sofern der Brennerkopfabstand und die Brenngasmenge und/oder -Zusammensetzung (beispielsweise eines Acetylen- brenners) im funktionalen Bereich liegen. Durch die erfindungsgemäßen Maßnahmen ist nicht mehr erforderlich, dass der Brenner direkt auf ein Werkstück ausgerichtet ist. Die Gefahr des Entweichens unverbrannter Brenngase aufgrund nicht durchgezündeter Brenner sowie die hierdurch bedingte Explosionsgefahr wird vermindert oder eliminiert. is suitably aligned in the direction of a working or sub ¬ flame of an adjacent burner nozzle. Through the measures according to the invention, the passing of a flame between individual burner nozzles of a Multi-flame burner can be significantly improved. Here ¬ by a complete flashover all flames of a multi-flame burner can be achieved safely and reliably as long as the burner head distance and the amount of fuel gas and / or composition (eg, an acetylene torch) are in the functional area. The measures according to the invention no longer require that the burner be aligned directly with a workpiece. The risk of escape of unburnt fuel gases due to non-combusted burner and the resulting risk of explosion is reduced or eliminated.
Im Rahmen dieser Anmeldung sei unter "Arbeitsflamme" die jeweilige Hauptflamme einer Brennerdüse eines Mehrflammen- brenners verstanden, die auf ein Werkstück gerichtet ist und beispielsweise zur Erwärmung dieses Werkstücks dient. Die Arbeitsflamme wird in der Regel entweder durch eine Einzeldüse erzeugt, oder aber durch eine Hauptdüsenanord¬ nung, bei der eine zentrale Düse von ringförmig um diese angeordneten weiteren Düsen umgeben ist. Ist anstelle einer Hauptdüsenanordnung eine Einzeldüse vorgesehen, sei diese im Rahmen der Anmeldung von dem Begriff "Hauptdüsenanordnung" umfasst. Entsprechend ist eine "Nebenflamme" die erfindungsgemäß be¬ reitgestellte, durch die Bereitstellung wenigstens einer Nebendüsenöffnung bewirkte, und wenigstens teilweise auf eine benachbarte Düse ausgerichtete Flamme. Typischerweise sind die Nebenflammen aufgrund von geringeren die Nebendü- senöffnungen durchströmenden Gasmengen bzw. -volumenströmen kleiner als die Haupt- bzw. Arbeitsflammen. Es versteht sich, dass der Bereich einer "Flamme" in der Praxis geometrisch nicht klar abgegrenzt sein wird, so dass sich bei einer "Arbeitsflamme" und bei einer "Nebenflamme" auch um Flammenbereiche einer entsprechenden Gesamtflamme handeln kann. Typischerweise sind jedoch die Primärflammen, die jeweils an der Haupt- und den Nebendüsenöffnungen, beispielsweise einer Acetylen-Brenndüse erzeugt werden, zumin¬ dest teilweise visuell klar voneinander unterscheidbar. Die sich um eine Primärflamme ausbildende sogenannte Streuflam- me hüllt in der Regel die Primärflamme in Form einer Ge- samtf1amme ein. In the context of this application, the term "working flame" is understood to mean the respective main flame of a burner nozzle of a multi-flame burner, which is directed onto a workpiece and serves, for example, to heat this workpiece. The working flame is usually generated either by a single nozzle, or by a Hauptdüsenanord ¬ tion, in which a central nozzle is surrounded by annularly arranged around these other nozzles. If, instead of a main nozzle arrangement, a single nozzle is provided, this is included in the scope of the application by the term "main nozzle arrangement". Accordingly, a "by-flame" according to the invention be ¬ riding asked, caused by providing at least one sub-nozzle opening, and at least partially aligned to an adjacent nozzle flame. Typically, the secondary flames are smaller than the main or working flames due to lower gas volumes flowing through the sub-nozzle openings. It is understood that in practice the area of a "flame" will not be clearly demarcated, so that a "working flame" and an "auxiliary flame" may also be flame areas of a corresponding overall flame. Typically, however, the primary flame generated at the respective main and sub-nozzle holes, for example, an acetylene combustion nozzle, at least partially ¬ clearly distinguishable from each other visually. As a rule, the so-called scattered flame forming around a primary flame envelops the primary flame in the form of a total flame.
Zur Ausbildung von Nebenflammen in Richtung der wenigstens einen benachbarten Brennerdüsen kann wenigstens eine Neben- düsenöffnung und/oder wenigsten ein einer entsprechenden Nebendüsenöffnung zugeordneter Düsenkanal in einem Winkel zu der Hauptdüsenanordnung und/oder einem dieser zugeordneten Düsenkanal angeordnet sein. Mit besonderem Vorteil, insbesondere bei einer Anordnung mehrer Brennerdüsen in einem Mehrflammenbrenner in Reihe oder in einem Brennerfeld, ist wenigstens eine der Brenner¬ düsen mit Nebendüsenöffnungen zur Erzeugung von Nebenflammen in Richtung wenigstens zweier benachbarter Brennerdüsen versehen. Durch diese Anordnung kann eine mit Brenngas durchströmte Nebendüsenöffnung nach ihrer Zündung eine Flamme direkt an eine benachbarte, noch nicht gezündete, jedoch von Brenngas durchströmte Nebendüsenöffnung weitergeben. Hierdurch wird die benachbarte Brennerdüse insgesamt gezündet und kann ihrerseits auf Grund der Anordnung der Nebendüsenöffnungen die Flamme an wenigstens eine weitere Brennerdüse weitergeben, eine Brenneranordnung also durchzünden . Um eine besonders effektive Ausbildung der Nebenflammen mit vorteilhafter Geometrie zu erzielen, weist ein Mehrflammenbrenner der erfindungsgemäßen Art vorteilhafterweise zwei, drei oder mehrere Nebendüsenöffnungen an wenigstens einer Seite der Hauptdüsenanordnung auf. Durch eine entsprechende Anordnung kann insgesamt eine geeignete Konfiguration bzw. Querschnittsgeometrie einer Brennerflamme und entsprechen¬ der Nebenflammen bewirkt werden. Eine derartige Quer- schnittsgeometrie kann gezielt eingestellt werden, bei¬ spielsweise auf Grundlage eines Abstandes zwischen Einzel¬ brennern und/oder der Art oder des Drucks eines verwendeten Brenngases, so dass eine besonders effektive Weitergabe von Brennerflammen ermöglicht wird. In order to form secondary flames in the direction of the at least one adjacent burner nozzles, at least one auxiliary nozzle opening and / or at least one nozzle channel assigned to a corresponding auxiliary nozzle opening can be arranged at an angle to the main nozzle arrangement and / or a nozzle channel associated therewith. With particular advantage, in particular in an arrangement of multiple burner nozzles in a multi-flame burner in series or in a burner field, at least one of the burner ¬ nozzles is provided with auxiliary nozzle openings for generating secondary flames in the direction of at least two adjacent burner nozzles. By virtue of this arrangement, a secondary jet opening through which fuel gas flows can, after being ignited, pass on a flame directly to an adjacent, not yet ignited, but fuel gas flow-through secondary jet opening. As a result, the adjacent burner nozzle is ignited altogether and, in turn, due to the arrangement of the auxiliary nozzle openings, can pass on the flame to at least one further burner nozzle, thus igniting a burner arrangement. In order to achieve a particularly effective formation of the secondary flames with an advantageous geometry, a multi-flame burner of the type according to the invention advantageously has two, three or more secondary nozzle openings on at least one side of the main nozzle arrangement. By an appropriate arrangement, a suitable configuration or cross-sectional geometry of a burner flame and corresponding flame ¬ low as a whole can be effected. Such cross sectional geometry can be specifically adjusted, for example ¬ game on the basis of a distance between individual ¬ burners and / or the nature or pressure of a fuel gas used, so that a particularly effective transfer of burner flames is possible.
Wie erläutert, ist ein erfindungsgemäßer Mehrflammenbrenner dazu eingerichtet, dass wenigstens einer der Brenner zum Zünden wenigstens einer benachbarten Brennerdüse über wenigstens eine Nebenflamme dient. Dies kann beispielsweise durch geeignete Ausrichtung der Nebendüsenöffnungen, deren Geometrie, aber auch durch geeigneten Abstand der Brennerdüsen, erreicht werden. Aufgrund der besonderen Ausgestal¬ tung der Brennerdüsen mit Nebenflammen ist es zum Zünden einer Brenneranordnung lediglich noch erforderlich, einen Brenner, beispielsweise automatisiert, an einem Ort zu zün¬ den, wobei ein sicheres Durchzünden des Gesamtbrenners si¬ chergestellt ist. As explained, a multi-flame burner according to the invention is designed so that at least one of the burners serves to ignite at least one adjacent burner nozzle via at least one secondary flame. This can be achieved for example by suitable alignment of the auxiliary nozzle openings, their geometry, but also by suitable spacing of the burner nozzles. Due to the special Ausgestal ¬ tion of the burner nozzles with sub-flames, it is only necessary to ignite a burner assembly, a burner, for example automatically, to zuz ¬ the place, with a secure ignition of the entire burner is si ¬ chergestellt.
Mit besonderem Vorteil kann ein erfindungsgemäßer Mehrflam- menbrenner als Handbrenner oder Maschinenbrenner, beispielsweise als Leistenbrenner oder Lanzenbrenner, insbesondere zum Betrieb mit Acetylen als Brenngas, ausgebildet sein. Insbesondere Lanzen- und Leistenbrenner mit linearer Brenneranordnung profitieren aufgrund ihrer tendenziell schlechteren Durchzündneigung in besonderem Maße von den erfindungsgemäßen Maßnahmen. Ein Mehrflammenbrenner der erläuterten Art weist zur Zündung wenigstens eine Brennerdüse, eine manuelle Zündein¬ richtung, eine Zündflamme, eine Zündkerze oder einen Piezo- zünder auf, wodurch der Mehrflammenbrenner insbesondere für automatische Anwendungen mit nichtmanueller Zündung geeig- net ist. With particular advantage, a multi-flame burner according to the invention can be designed as a hand burner or machine burner, for example as a strip burner or lance burner, in particular for operation with acetylene as the fuel gas. In particular, lance and inguinal burner with linear Burner arrangement profit due to their tendency to tend to Durchzündneigung especially of the measures according to the invention. A multi-flame burner of the type described has for ignition at least one burner nozzle, a manual Zündein ¬ direction, a pilot flame, a spark plug or a piezo igniter, whereby the multi-flame burner is particularly suitable for automatic applications with non-manual ignition.
Zu den Merkmalen und Vorteilen der erfindungsgemäß ebenfalls vorgesehenen brenngasbeaufschlagbaren Brennerdüse sei auf die Merkmale des zuvor erläuterten Mehrflammenbrenners ausdrücklich verwiesen. Insbesondere ist eine derartige brenngasbeaufschlagbare Brennerdüse austauschbar ausgebil¬ det, so dass sich austauschbare Einzeldüsen in einen Brennergrundkörper zur Ausbildung eines Mehrflammenbrenners kombinieren lassen und hierdurch die Flammenweitergabe op- timiert werden kann. Auch zu den Vorteilen und vorteilhaften Einsatzbereichen des erfindungsgemäßen Verfahrens sei auf die zuvor erläuterten Merkmale hingewiesen. For the features and advantages of the present invention also provided Brenngasbeaufschlagbaren burner nozzle is expressly made to the features of the previously explained multi-flame burner. In particular, such Brenngasbeaufschlagbare burner nozzle is interchangeable ausgebil ¬ det, so that replaceable individual nozzles can be combined into a burner body to form a multi-flame burner and thereby the flame propagation can be optimized. Also to the advantages and advantageous areas of application of the method according to the invention is made to the previously described features.
Weitere Vorteile und Ausgestaltungen der Erfindung ergeben sich aus der Beschreibung und der beiliegenden Zeichnung. Further advantages and embodiments of the invention will become apparent from the description and the accompanying drawings.
Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen. Die Erfindung ist anhand eines Ausführungsbeispieles in der Zeichnung schematisch dargestellt und wird im Folgenden unter Bezugnahme auf die Zeichnung ausführlich beschrieben. Figurenbeschreibung It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention. The invention is illustrated schematically with reference to an embodiment in the drawing and will be described in detail below with reference to the drawing. figure description
Figur 1 zeigt Mehrflammenbrenner gemäß dem Stand der FIG. 1 shows multi-flame burners according to the prior art
Technik in schematischer Darstellung. Figur 2 zeigt eine Brennerdüse gemäß einer besonders be¬ vorzugten Ausführungsform der Erfindung in perspektivischer Schrägansicht. zeigt eine Brennerdüsenanordnung gemäß einer besonders bevorzugten Ausführungsform der Erfindung in Draufsicht von oben. Technology in a schematic representation. Figure 2 shows a burner according to a particularly be ¬ vorzugten embodiment of the invention in a perspective oblique view. shows a burner nozzle assembly according to a particularly preferred embodiment of the invention in plan view from above.
Figur 4 zeigt schematisch eine Anordnung im Betrieb befindlicher Brennerdüsen gemäß einer besonders be- vorzugten Ausführungsform der Erfindung in Seitenansicht . FIG. 4 shows a schematic side view of an arrangement of operating burner nozzles according to a particularly preferred embodiment of the invention.
Die Figuren 1A bis IC zeigen, wie zuvor erläutert, Mehrflammenbrenner gemäß dem Stand der Technik. FIGS. 1A to 1C, as explained above, show multi-flame burners according to the prior art.
In den nachfolgenden Figuren sind gleiche oder gleich wirkende Elemente mit identischen Bezugszeichen versehen. Auf eine wiederholte Erläuterung dieser Elemente wird der Über¬ sichtlichkeit halber verzichtet. In the following figures, the same or equivalent elements are provided with identical reference numerals. For a repeated explanation of these elements of clarity ¬ sake omitted.
Figur 2 zeigt, insgesamt mit 10 bezeichnet, eine Brennerdü¬ se gemäß einer besonders bevorzugten Ausführungsform der Erfindung, die beispielsweise in einem erfindungsgemäßen Mehrflammenbrenner zum Einsatz kommen kann. FIG. 2, denoted overall by 10, shows a burner nozzle according to a particularly preferred embodiment of the invention Invention, which can be used for example in a multi-flame burner according to the invention.
Die Brennerdüse 10 weist einen Brennerdüsenkopf 20 und ei- nen Brennerdüsenfuß 21 auf. Handelt es sich bei der Bren¬ nerdüse 10 um eine austauschbare Düse, kann diese mit dem Brennerdüsenfuß 21 in einem Brennergrundkörper befestigt werden. In dem Brennerdüsenkopf 20 ist eine Hauptdüsenan¬ ordnung 30 vorgesehen, die eine Hauptdüsenöffnung und diese kreisförmig umgebende weitere Düsenöffnungen aufweist. Die Hauptdüsenanordnung 30 ist, wie zuvor erläutert, zur Ausbildung einer Arbeitsflamme eingerichtet. The burner nozzle 10 has a burner nozzle head 20 and a burner nozzle foot 21. If it is in the Bren ¬ nerdüse 10 to a replaceable nozzle, it can be attached to the Brennerdüsenfuß 21 in a burner main body. In the burner nozzle head 20 a Hauptdüsenan ¬ order 30 is provided, which has a main nozzle opening and this circular surrounding further nozzle openings. The main nozzle assembly 30 is, as previously explained, configured to form a working flame.
Zusätzlich weist die Brennerdüse 10 zur Erzeugung von Ne- benflammen neben der Hauptdüsenanordnung 30 vorgesehene Nebendüsenöffnungen 40 auf. Die Nebendüsenöffnungen 40 selbst, oder ihre entsprechenden Düsenkanäle, können dabei winkelmäßig zu der Ausrichtung der Hauptdüsenanordnung 30 versetzt sein, so dass sich eine gezielte Ausrichtung der Nebenflammen in Richtung benachbarter Brennerdüsen bzw. deren Flammen erzielen lässt. In addition, the burner nozzle 10 for generating side flames next to the main nozzle assembly 30 provided on the sub-nozzle openings 40 on. The auxiliary nozzle openings 40 themselves, or their corresponding nozzle channels, can be offset angularly from the orientation of the main nozzle arrangement 30, so that a targeted alignment of the secondary flames in the direction of adjacent burner nozzles or their flames can be achieved.
In Figur 3 sind insgesamt 4 Brennerdüsen 11, 12, 13 und 14 gemäß einer besonders bevorzugten Ausführungsform der Er- findung in Draufsicht dargestellt. In FIG. 3, a total of 4 burner nozzles 11, 12, 13 and 14 according to a particularly preferred embodiment of the invention are shown in plan view.
Die Brennerdüsen 11, 13 und 14 entsprechen in der Konfiguration und Anordnung der Nebendüsenöffnungen 40 dabei der Brennerdüse 10 aus Figur 2. Die Brennerdüse 12 weist hinge- gen weitere, in der Figur senkrecht nach unten weisende Ne¬ bendüsenöffnungen 41 auf, die in Richtung einer rechtwinklig zur Reihe der Brennerdüsen 11, 12 und 13 angeordneten Brennerdüse 14 ausgerichtet sind. Durch die Anordnung, wie sie in Figur 3 veranschaulicht ist, lässt sich mit besonde¬ rem Vorteil ein Durchzünden bzw. eine Flammenweitergabe, wie durch die Pfeile 50 veranschaulicht, zwischen den ein¬ zelnen Brennerdüsen 11, 12, 13 und 14, erzielen. Die darge- stellten Brennerdüsen 11, 12, 13 und 14 können dabei Teil eines Mehrflammenbrenners bzw. eines Brennerfeldes eines Mehrflammenbrenners sein. Es versteht sich, dass die in Fi¬ gur 3 dargestellte Konfiguration beliebig erweiterbar ist und bei Bereitstellung weiterer Nebendüsenöffnungen 40, 41 auch ein sicheres Durchzünden 50 in zusätzlichen Richtungen bewirkt werden kann. In the configuration and arrangement of the auxiliary nozzle openings 40, the burner nozzles 11, 13 and 14 correspond to the burner nozzle 10 of FIG. 2. The burner nozzle 12, however, has further, in the figure vertically pointing down Ne ¬ bendüsenöffnungen 41, in the direction of a are aligned at right angles to the row of burner nozzles 11, 12 and 13 arranged burner nozzle 14. By the arrangement, how it is illustrated in Figure 3, can be combined with Customized ¬ rem advantage of a flashover or a flame distribution, as illustrated by the arrows 50, between a ¬ individual burner nozzles 11, 12, 13 and 14 are achieved. The illustrated burner nozzles 11, 12, 13 and 14 may be part of a multi-flame burner or a burner field of a multi-flame burner. It is understood that the configuration shown in Fi gur ¬ 3 can be expanded and further by providing the nozzle holes 41 can be effected in additional directions 40, also a safe flashover 50th
In Figur 4 ist eine entsprechende Brennerdüsenanordnung in Betrieb schematisch dargestellt. Ein Brenngas tritt hierbei über eine Hauptdüsenanordnung und seitlich von dieser angeordnete Nebendüsenöffnungen 40 aus den Brennern 15 aus. Hierdurch ergibt sich die Ausbildung einer Hauptflamme bzw. Arbeitsflamme 60, die auf ein Werkstück ausgerichtet werden kann. Die Primärflamme dieser Arbeitsflamme ist mit 70 an- gegeben. Zusätzlich zur Hauptflamme 60 bzw. deren Primärflamme 70 sind in der Figur 4 Nebenflammen 80 mit entspre¬ chenden Primärflammen 90 dargestellt. Die Nebenflammen 80 sind wenigstens teilweise in Richtung benachbarter Düsen ausgerichtet, wodurch sich besagte besonders vorteilhafte Durchzündung ergibt. FIG. 4 schematically shows a corresponding burner nozzle arrangement in operation. A fuel gas passes out of the burners 15 via a main nozzle arrangement and side-nozzle openings 40 arranged laterally therefrom. This results in the formation of a main flame or working flame 60, which can be aligned with a workpiece. The primary flame of this working flame is indicated at 70. In addition to the main flame 60 and the primary flame 70 4 In addition flames 80 are presented with entspre ¬ sponding primary flames 90 in the figure. The secondary flames 80 are at least partially aligned in the direction of adjacent nozzles, resulting in said particularly advantageous ignition.

Claims

Patentansprüche claims
1. Mehrflammenbrenner mit brenngasbeaufschlagbaren Brennerdüsen (10 - 15), insbesondere für thermische Materialbearbeitungsverfahren, dadurch gekennzeichnet, dass wenigstens eine der Brennerdüsen (10 - 15) mit wenigstens einer seitlich einer Hauptdüsenanordnung (30) zur Erzeugung einer Arbeitsflamme (60) angeordneten Nebendüsenöffnung (40) zur Erzeugung einer Nebenflamme (80) versehen ist, deren Ausrichtung eine Richtungskomponente in Richtung einer benachbarten Brennerdüse (10 - 15) aufweist. Characterized in that at least one of the burner nozzles (10-15) having at least one side of a main nozzle assembly (30) for generating a working flame (60) arranged auxiliary nozzle opening (40 ) is provided for generating an auxiliary flame (80) whose orientation has a directional component in the direction of an adjacent burner nozzle (10 - 15).
2. Mehrflammenbrenner nach Anspruch 1, dadurch gekennzeichnet, dass wenigstens eine Nebendüsenöffnung (40) und/oder wenigstens ein einer Nebendüsenöffnung (40) zugeordneter Düsenkanal in einem Winkel zu der Hauptdüsenanordnung (30) und/oder einem der2. Mehrflammenbrenner according to claim 1, characterized in that at least one auxiliary nozzle opening (40) and / or at least one of a secondary nozzle opening (40) associated with the nozzle channel at an angle to the main nozzle assembly (30) and / or one of
Hauptdüsenanordnung (30) zugeordneten Düsenkanal angeordnet ist . Main nozzle assembly (30) associated with the nozzle channel is arranged.
3. Mehrflammenbrenner nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass wenigstens eine der Brennerdüsen (10 - 15) mit Nebendüsenöffnungen (40) zur Erzeugung von Nebenflammen (80) in Richtung wenigstens zweier benachbarter Brennerdüsen (10 - 15) versehen ist. 3. Multi-flame burner according to claim 1 or 2, characterized in that at least one of the burner nozzles (10-15) is provided with auxiliary nozzle openings (40) for generating secondary flames (80) in the direction of at least two adjacent burner nozzles (10-15).
4. Mehrflammenbrenner nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass wenigstens eine der Brennerdüsen (10 - 15) mit zwei, drei oder mehreren Nebendüsenöffnungen (40) an wenigstens einer Seite der Hauptdüsenanordnung (30) versehen ist. 4. Multi-flame burner according to one of the preceding claims, characterized in that at least one of Burner nozzles (10 - 15) with two, three or more auxiliary nozzle openings (40) on at least one side of the main nozzle assembly (30) is provided.
5. Mehrflammenbrenner nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass wenigstens eine der Brennerdüsen (10 - 15) mit mehreren, linear angeordneten Nebendüsenöffnungen (40) versehen ist. 5. Multi-flame burner according to one of the preceding claims, characterized in that at least one of the burner nozzles (10-15) is provided with a plurality of linearly arranged auxiliary nozzle openings (40).
6. Mehrflammenbrenner nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass wenigstens eine der Brennerdüsen (10 - 15) zum Zünden (50) einer benachbarten Brennerdüse (10 - 15) über wenigstens eine Nebenflamme (80) eingerichtet ist. 6. Multi-flame burner according to one of the preceding claims, characterized in that at least one of the burner nozzles (10 - 15) for igniting (50) of an adjacent burner nozzle (10 - 15) via at least one secondary flame (80) is arranged.
7. Mehrflammenbrenner nach einem der vorstehenden Ansprüche, der als Handbrenner oder Maschinenbrenner, beispielsweise als Leistenbrenner oder Lanzenbrenner, insbesondere zum Betrieb mit Acetylen als Brenngas, ausgebildet ist. 7. Multi-flame burner according to one of the preceding claims, which is designed as a hand burner or machine torch, for example as inguinal burner or lance burner, in particular for operation with acetylene as the fuel gas.
8. Mehrflammenbrenner nach einem der vorstehenden Ansprüche, der zur Zündung wenigstens einer Brennerdüse (10 - 15) durch eine manuelle Zündeinrichtung, eine Zündflamme, eine Zündkerze und/oder einen Piezozünder eingerichtet ist. 8. Multi-flame burner according to one of the preceding claims, which is set up to ignite at least one burner nozzle (10-15) by a manual ignition device, a pilot flame, a spark plug and / or a piezoelectric igniter.
9. Brenngasbeaufschlagbare Brennerdüse für Mehrflammenbrenner, insbesondere nach einem der Ansprüche 1 bis 8, insbesondere für thermische Material- bearbeitungsverfahren, dadurch gekennzeichnet, dass wenigstens eine seitlich einer Hauptdüsenanordnung (30) zur Erzeugung einer Arbeitsflamme angeordnete Nebendüsenöffnung (40) zur Erzeugung einer Nebenflamme (80) vorgesehen ist. 9. Brenngasbeaufschlagbare burner nozzle for Mehrflammenbrenner, in particular according to one of claims 1 to 8, in particular for thermal material processing method, characterized in that at least one side of a main nozzle assembly (30) for generating a working flame arranged auxiliary nozzle opening (40) for generating an auxiliary flame (80 ) is provided.
10. Thermisches Materialbearbeitungsverfahren, bei dem ein Mehrflammenbrenner nach einem der Ansprüche 1 bis 8 verwendet wird, wobei wenigstens eine Brennerdüse (10 - 15) mittels einer Nebenflamme (80) einer benachbarten Brennerdüse (10 - 15) gezündet (50) wird. A thermal material processing method using a multi-flame burner according to any one of claims 1 to 8, wherein at least one burner nozzle (10 - 15) is fired (50) by means of a sub-flame (80) of an adjacent burner nozzle (10 - 15).
11. Thermisches Materialbearbeitungsverfahren nach Anspruch 10, das wenigstens einen Flammlöt- , Schmelzverbindungs- , Warmformgebungs- , Flammhärte-,11. A thermal material processing method according to claim 10, comprising at least one flame brazing, fusible link, hot forming, flame hardening,
Flammstrahl-, Vorwärm-, Nachwärm-, Soak- , Trocknungsund/oder Warmumform-Schritt beinhaltet. Flame jet, preheating, reheating, soak, drying and / or hot forming step includes.
EP11703445.4A 2010-04-29 2011-02-10 Multi-flame burner with flame transmission Active EP2564119B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11703445T PL2564119T3 (en) 2010-04-29 2011-02-10 Multi-flame burner with flame transmission

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010028396A DE102010028396A1 (en) 2010-04-29 2010-04-29 Multi-flame burner with flame propagation
PCT/EP2011/051942 WO2011134687A1 (en) 2010-04-29 2011-02-10 Multi-flame burner with flame

Publications (2)

Publication Number Publication Date
EP2564119A1 true EP2564119A1 (en) 2013-03-06
EP2564119B1 EP2564119B1 (en) 2014-03-26

Family

ID=44585021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11703445.4A Active EP2564119B1 (en) 2010-04-29 2011-02-10 Multi-flame burner with flame transmission

Country Status (14)

Country Link
US (1) US20130288187A1 (en)
EP (1) EP2564119B1 (en)
AU (1) AU2011247287B2 (en)
BR (1) BR112012027311B1 (en)
CA (1) CA2797467C (en)
DE (1) DE102010028396A1 (en)
DK (1) DK2564119T3 (en)
ES (1) ES2472947T3 (en)
MY (1) MY165929A (en)
PL (1) PL2564119T3 (en)
RU (1) RU2563462C2 (en)
UA (1) UA110032C2 (en)
WO (1) WO2011134687A1 (en)
ZA (1) ZA201208042B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10480823B2 (en) * 2013-11-14 2019-11-19 Lennox Industries Inc. Multi-burner head assembly
US9938808B2 (en) 2014-08-19 2018-04-10 Adler Hot Oil Service, LLC Wellhead gas separator system
US10767859B2 (en) 2014-08-19 2020-09-08 Adler Hot Oil Service, LLC Wellhead gas heater
US10323200B2 (en) 2016-04-12 2019-06-18 Enservco Corporation System and method for providing separation of natural gas from oil and gas well fluids
IL258286B (en) * 2017-05-03 2021-06-30 Kopolovich Haim Hanukiah
US10712014B2 (en) * 2018-02-21 2020-07-14 Earthcore Industries, Llc Modular linear fireplace gas burner system

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2125915A (en) * 1934-02-27 1938-08-09 Union Carbide & Carbon Corp Blowpipe nozzle
US2518544A (en) * 1947-11-15 1950-08-15 Linde Air Prod Co Multiflame heating head
SU116920A1 (en) * 1958-03-10 1958-11-30 дважды Ордена Ленина и Ордена Трудового Красного знамени автозавод им. Лихачева Московский (Тепловая лаборатория) Multi Spray Injection Burner
DE1529195A1 (en) * 1966-01-29 1969-12-04 Lajos Alfoeldi Gas / air mixture burner
GB1238484A (en) * 1968-04-16 1971-07-07
DE1815004C3 (en) * 1968-12-17 1974-07-04 Bahlsen, Werner, 3000 Hannover Industrial gas burner with burner nozzles arranged in rows
DE2035563C3 (en) * 1970-07-17 1975-03-27 Walter 7000 Stuttgart Dreizler Burner head for a premixed gas burner
AT398822B (en) * 1993-01-25 1995-02-27 Vaillant Gmbh BURNER
US5318439A (en) * 1993-02-03 1994-06-07 Robertshaw Controls Company Jet burner construction heating apparatus utilizing the jet burner construction and methods of making the same
DE29718409U1 (en) * 1997-10-16 1997-12-18 Ebertz, Uwe, 35764 Sinn Pipe hole burner, especially for gas-heated cooking and grilling devices
US6394792B1 (en) * 1999-03-11 2002-05-28 Zeeco, Inc. Low NoX burner apparatus
RU2355948C2 (en) * 2007-05-07 2009-05-20 Общество с ограниченной ответственностью Финансово-промышленная компания "Космос-Нефть-Газ" Flare burner
EP2136140A1 (en) * 2008-06-20 2009-12-23 Linde AG Burner head for hand- or machine-operated burner devices

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011134687A1 *

Also Published As

Publication number Publication date
DE102010028396A1 (en) 2011-11-03
CA2797467C (en) 2018-06-12
DK2564119T3 (en) 2014-06-30
RU2563462C2 (en) 2015-09-20
RU2012150999A (en) 2014-06-10
CA2797467A1 (en) 2011-11-03
EP2564119B1 (en) 2014-03-26
WO2011134687A1 (en) 2011-11-03
AU2011247287B2 (en) 2015-02-12
MY165929A (en) 2018-05-18
BR112012027311B1 (en) 2020-11-17
ZA201208042B (en) 2013-06-26
US20130288187A1 (en) 2013-10-31
PL2564119T3 (en) 2014-08-29
BR112012027311A2 (en) 2016-08-02
UA110032C2 (en) 2015-11-10
ES2472947T3 (en) 2014-07-03

Similar Documents

Publication Publication Date Title
EP2564119B1 (en) Multi-flame burner with flame transmission
DE974927C (en) Furnace for the production of carbon black and processes for its operation
EP2054669B1 (en) Burner with a protective element for ignition electrodes
DE4239903C1 (en) Injector mouthpiece for burner units
EP3803210A1 (en) Fuel nozzle system
DE2948777A1 (en) Autogenous flame cutting, esp. using oxy-acetylene - where air is added to heating flame to ensure adequate preheating of thick workpieces
EP2134498B1 (en) Method for autogenous processes
AT88358B (en) Process and torch for cutting metals.
EP3786524A1 (en) Regenerative burner for highly reduced nox emissions
EP4198393B1 (en) Recuperative burner
DE102008015244A1 (en) Method and device for simulating a particular fire situation, in particular with sudden flame propagation
DE102015105144A1 (en) Flämmkopf
DE3131948C2 (en)
DE3127168C2 (en) burner
DE236590C (en)
DE290535C (en)
DE2916252A1 (en) Control of fuel burner emissions - by using minimal excess air and feeding inert gas to hottest part of flame
DE2819132B1 (en) Gas-mixing cutting torch
DE2164229C3 (en) Method and system for stabilizing the combustion process in a furnace for the scaling-free heating of material to be heated
DE526376C (en) Autogenous welding and cutting torch
DE4036486A1 (en) FLAME-CUTTING METHOD UNDER A LIQUID
EP2434216A1 (en) Method for producing a burner
DE4033618A1 (en) UNDERWATER CUTTING METHOD
DE102004011552A1 (en) Device for thermal cutting of a metallic workpiece comprises second cutting device arranged behind first cutting device so that cutting oxygen jet of the second device is coupled in cutting gap created by light beam of the first device
DD148670A1 (en) METHOD AND DEVICE FOR ATTACHING

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

17P Request for examination filed

Effective date: 20121023

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20131029

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 659199

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140415

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502011002534

Country of ref document: DE

Effective date: 20140508

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20140627

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2472947

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20140703

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: EE

Ref legal event code: FG4A

Ref document number: E009373

Country of ref document: EE

Effective date: 20140606

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20140326

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

Ref country code: RS

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: 20140326

Ref country code: HR

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: 20140326

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

Ref country code: BG

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: 20140626

Ref country code: CY

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: 20140326

Ref country code: IS

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: 20140726

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

Ref country code: SK

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: 20140326

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

Ref country code: PT

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: 20140728

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502011002534

Country of ref document: DE

REG Reference to a national code

Ref country code: HU

Ref legal event code: AG4A

Ref document number: E020579

Country of ref document: HU

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

Effective date: 20150106

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 PRESCRIBED TIME-LIMIT

Effective date: 20140326

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502011002534

Country of ref document: DE

Effective date: 20150106

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

Ref country code: BE

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

Effective date: 20150228

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

Ref country code: SI

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: 20140326

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150210

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

Ref country code: MC

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: 20140326

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

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

Ref country code: IE

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

Effective date: 20150210

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

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: 20140627

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

Ref country code: MT

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: 20140326

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

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

Ref country code: SM

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: 20140326

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

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

Ref country code: MK

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: 20140326

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

Ref country code: AL

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: 20140326

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502011002534

Country of ref document: DE

Owner name: LINDE GMBH, DE

Free format text: FORMER OWNER: LINDE AG, 80331 MUENCHEN, DE

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

Ref country code: EE

Payment date: 20210216

Year of fee payment: 11

Ref country code: LT

Payment date: 20210127

Year of fee payment: 11

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

Ref country code: LV

Payment date: 20210216

Year of fee payment: 11

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

Ref country code: CH

Payment date: 20220221

Year of fee payment: 12

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

Ref country code: PL

Payment date: 20220201

Year of fee payment: 12

Ref country code: NL

Payment date: 20220216

Year of fee payment: 12

REG Reference to a national code

Ref country code: LT

Ref legal event code: MM4D

Effective date: 20220210

REG Reference to a national code

Ref country code: EE

Ref legal event code: MM4A

Ref document number: E009373

Country of ref document: EE

Effective date: 20220228

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

Ref country code: LT

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

Effective date: 20220210

Ref country code: EE

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

Effective date: 20220228

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

Ref country code: LV

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

Effective date: 20220210

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

Ref country code: NO

Payment date: 20230217

Year of fee payment: 13

Ref country code: FR

Payment date: 20230217

Year of fee payment: 13

Ref country code: ES

Payment date: 20230317

Year of fee payment: 13

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

Ref country code: SE

Payment date: 20230220

Year of fee payment: 13

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230523

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20230301

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: 20230228

Ref country code: CH

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

Effective date: 20230228

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

Ref country code: NL

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

Effective date: 20230301

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

Ref country code: AT

Payment date: 20240216

Year of fee payment: 14

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

Ref country code: RO

Payment date: 20240202

Year of fee payment: 14

Ref country code: HU

Payment date: 20240206

Year of fee payment: 14

Ref country code: FI

Payment date: 20240219

Year of fee payment: 14

Ref country code: DE

Payment date: 20240216

Year of fee payment: 14

Ref country code: CZ

Payment date: 20240129

Year of fee payment: 14

Ref country code: GB

Payment date: 20240222

Year of fee payment: 14

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

Ref country code: TR

Payment date: 20240201

Year of fee payment: 14

Ref country code: DK

Payment date: 20240221

Year of fee payment: 14