EP0560713B1 - Method for the production of hot air and burner for the combustion of gaseous fuels - Google Patents

Method for the production of hot air and burner for the combustion of gaseous fuels Download PDF

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Publication number
EP0560713B1
EP0560713B1 EP19930810131 EP93810131A EP0560713B1 EP 0560713 B1 EP0560713 B1 EP 0560713B1 EP 19930810131 EP19930810131 EP 19930810131 EP 93810131 A EP93810131 A EP 93810131A EP 0560713 B1 EP0560713 B1 EP 0560713B1
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EP
European Patent Office
Prior art keywords
air
burner
housing
flame
direction means
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EP19930810131
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German (de)
French (fr)
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EP0560713A3 (en
EP0560713A2 (en
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Siegfried Frei
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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
    • F23D14/70—Baffles or like flow-disturbing devices

Definitions

  • the present invention relates to a method for generating hot air according to the preamble of patent claim 1 and a burner arrangement for the combustion of gaseous fuels for producing hot air according to the preamble of patent claim 2.
  • the invention seeks to remedy this.
  • the invention as characterized in claim 1 solves the problem of creating a method for generating hot air which enables the generation of low-polluting heating gases.
  • the invention, as characterized in claim 2 solves the problem of creating a burner arrangement for generating hot air, by means of which combustion of the fuel gas is achieved which is below the currently valid values of the regulations.
  • the air guiding means divide the air flowing around the burner into two streams, the first being directed to the bottom of the flame and at the same time cooling the burner housing and the second being brought to the top and side of the flame to reach its outermost zone.
  • the arrangement of the air guiding means according to the invention makes it possible to arrange very small-sized burner heads in series on a gas / air mixture supply pipe and to let the hot air escape along a slot of any length arranged above the burners.
  • a burner 1 is used, as is described in German Patent 31 53 336.
  • a gas burner as disclosed in EP-A-0 560 710 is preferably used.
  • the burner 1 is seated on a gas / air mixture supply pipe 3, which can be connected to a mixture preparation system (not shown) by a connector 5.
  • the burner 1 can be welded directly to the feed pipe 3 or connected to the latter by means of a screw connection.
  • the feed pipe 3, on which a plurality of burners 1 is fastened in series, is arranged in a housing 7 and is enclosed by this.
  • the feed pipe 3 is at a distance from the bottom 8 U-shaped housing lower part 9 and is supported by the upper end of the nozzle 5.
  • a first guide plate 11 can be inserted between the underside of the feed pipe 3 and the bottom 8 of the lower housing part 9. Between the longitudinal edges of the guide plate 11 and the vertical legs 10 of the lower housing part 9, fresh air, which is introduced into the housing 7 through the fresh air connector 13, can be distributed evenly upwards.
  • the U-shaped lower housing part 9 consists of one piece and can accommodate, for example, approximately 30 or more burners 1, which are fastened on a correspondingly long feed pipe 3.
  • sheet metal fins 15 are fastened by means of screws 17 and overlap in the areas 21 by a few millimeters.
  • the fins 15 have slots 23 at the passage of the screw 19, which can compensate for different lengths of the lower housing part 9, which is located in the cold part, and the fins 15, which become very hot.
  • the two slats 15 run inclined to one another and form a slot-shaped outlet opening 25 along the opposite free edges.
  • recesses 27 are punched out for hanging perforated grids 29.
  • outwardly projecting tabs 31 are attached, which can be passed through the recesses 27 with play.
  • the perforated grid 29 are consequently loose, but held on all sides between the two fins 15. Different thermal expansions of the last two parts are compensated for by the play of the tabs 31 in the recesses 27.
  • Air guiding means 33 are seated on the burners 1, each of which is assigned two, three or more burners 1.
  • the air guiding means 33 form a flame chamber 35 which is essentially rectangular in cross section, which is open at the top and laterally in the area of the flame outlet opening 37 have an air flow divider 39 on the surface of the burner 1.
  • the air flow divider 39 consists of a sheet metal tab formed like a ramp from the surface of the vertical sections of the air guide means 33. The latter can be produced by punching out slots 41 and bending them out.
  • the air flow dividers 39 overlap the burner 1.
  • each air guide 33 is connected to two burners 1 by screws 43. Three or four burners 1 can also have a common air guiding means 33.
  • connection between the guide means 33 and the burners 1 is fixed.
  • the additional connections are designed in such a way that dilation, caused by different expansion of the individual parts, is possible.
  • the air guiding means 33 are closed by bending their lower sections into the horizontal. The degree does not have to be complete; however, the entry of a larger air flow should be prevented.
  • An intermediate space is left between the upper edges 45 of the air guide means 33 and the perforated grid, which allows air to pass into the flame space 35 from above.
  • L-shaped fins 46 can be inserted between the lateral guide means 33.
  • the fins 46 can extend above the area to the side of the flame 47.
  • fresh air flows from below into the U-shaped housing part 9 in a predetermined, adjustable amount, and if present, directed upwards by the guide plate 11 along the side walls 10 of the housing 9.
  • the air flow dividers 39 part of the air flowing upwards is led into the flame space 35 and comes into contact with the lower part of the flame 47 and mixes with the already ignited gas / air mixture.
  • This air which is fed into the flame laterally from below, has a similar function as the secondary air in a Bunsen burner.
  • the fresh air which is not branched off from the air flow dividers 39 and introduced into the flame chamber 35 flows upwards outside the air guide means 33 and, deflected at the perforated grille 29, reaches the flame chamber 35 from above and there causes an oxidation of components of the hot fuel gas air mixture that have not yet burned. Together with the hot combustion products, the additional fresh air introduced into the flame space 35 at the bottom, the hot mixture flows up through the perforated grille 29 and can leave the burner arrangement through the outlet opening 25.
  • the fresh air introduced from below into the lower housing part 9 cools both the feed pipe 3 and the burner 1 as well as the lower housing part 9 and the lower areas of the sheet metal fins 15.
  • the air flowing past the air flow dividers 39 enters the flame chamber 35, it is already from the flame chamber 35 radiated heat warmed to the side.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)

Description

Gegenstand der vorliegenden Erfindung ist ein Verfahren zum Erzeugen von Heissluft gemäss Oberbegriff des Patentanspruches 1 und eine Brenneranordnung für die Verbrennung von gasförmigen Brennstoffen zur Erzeugung von Heissluft gemäss Oberbegriff des Patentanspruches 2.The present invention relates to a method for generating hot air according to the preamble of patent claim 1 and a burner arrangement for the combustion of gaseous fuels for producing hot air according to the preamble of patent claim 2.

Aus der deutschen Patentschrift 31 53 336 ist ein Brenner für gasförmigen Brennstoff zum Einsatz in einem Heisslufterzeuger bekannt, welcher in einem Gehäuse untergebracht ist, durch welches die zu erwärmende Luft hindurchgeführt wird. Die auf der Unterseite des Brenners in das Gehäuse eingeführte Luft dient zudem zur Kühlung des Brenners selbst und es ist damit eine hundertprozentige Ausnutzung der durch den Brenner erzeugten Wärme möglich. Dem Brenner werden in stöchiometrischem Verhältnis Luft und Brenngas bereits gemischt zugeführt, um eine möglichst vollständige Verbrennung in der Flamme zu erreichen. Dennoch gelingt es nicht, die von Amtsstellen aufgestellten Werte (Luftreinhalteverordnung) bezüglich der Abgase in allen Fällen zu erreichen. Insbesondere bei Verbrennung von Erdgas mit sich ändernder Zusammensetzung kann es zu Ueberschreitungen der erlaubten NOX-Werte kommen.From the German patent 31 53 336 a burner for gaseous fuel for use in a hot air generator is known, which is housed in a housing through which the air to be heated is passed. The air introduced into the housing on the underside of the burner also serves to cool the burner itself, and it is thus possible to fully utilize the heat generated by the burner. Air and fuel gas are already fed to the burner in a stoichiometric ratio in order to achieve as complete a combustion as possible in the flame. Nevertheless, it is not possible to achieve the values set by official agencies (clean air regulation) with regard to exhaust gases in all cases. Especially when burning natural gas with a changing composition, the permitted NOX values may be exceeded.

Hier will die Erfindung Abhilfe schaffen. Die Erfindung wie sie im Anspruch 1 gekennzeichnet ist, löst die Aufgabe, ein Verfahren zum Erzeugen von Heissluft zu schaffen, welches die Erzeugung von schadstoffarmen Heizgasen ermöglicht. Die Erfindung wie sie in Anspruch 2 gekennzeichnet ist, löst die Aufgabe, eine Brenneranordnung zur Erzeugung von Heissluft zu schaffen, mittels welcher eine Verbrennung des Brenngases erreicht ist, welche die zur Zeit gültigen Werte der Vorschriften unterschreitet.The invention seeks to remedy this. The invention as characterized in claim 1 solves the problem of creating a method for generating hot air which enables the generation of low-polluting heating gases. The invention, as characterized in claim 2, solves the problem of creating a burner arrangement for generating hot air, by means of which combustion of the fuel gas is achieved which is below the currently valid values of the regulations.

Ueberraschenderweise gelingt es, durch die erfindungsgemässe Führung der sich erwärmenden Luft im Bereich des Brenners diese Aufgabe in einwandfreier Weise zu lösen. Die Luftleitmittel teilen die den Brenner umfliessende Luft in zwei Ströme auf, wobei der erste auf den Grund der Flamme gerichtet ist und gleichzeitig das Brennergehäuse kühlt und der zweite seitlich und von oben an die Spitze der Flamme herangeführt wird, um in deren äusserste Zone hineinzugelangen. Die erfindungsgemässe Anordnung der Luftleitmittel ermöglicht es, sehr klein dimensionierte Brennerköpfe in Serie auf einem Gas/Luftgemisch-Zuführrohr anzuordnen und die heisse Luft entlang eines beliebig langen, über den Brennern angeordneten Schlitzes austreten zu lassen.Surprisingly, it is possible to accomplish this task in a flawless manner by guiding the heating air in the area of the burner according to the invention. The air guiding means divide the air flowing around the burner into two streams, the first being directed to the bottom of the flame and at the same time cooling the burner housing and the second being brought to the top and side of the flame to reach its outermost zone. The arrangement of the air guiding means according to the invention makes it possible to arrange very small-sized burner heads in series on a gas / air mixture supply pipe and to let the hot air escape along a slot of any length arranged above the burners.

Anhand eines illustrierten Ausführungsbeispieles wird die Erfindung näher erläutert. Es zeigen:

Figur 1
eine perspektivische Darstellung einer Brenneranordnung mit mehreren in Serie geschalteten Brennern,
Figur 2
einen Querschnitt längs Linie II-II in Figur 3 durch eine Brenneranordnung und
Figur 3
einen Schnitt längs Linie III-III in Figur 2 der Brenneranordnung.
The invention is explained in more detail with the aid of an illustrated embodiment. Show it:
Figure 1
1 shows a perspective illustration of a burner arrangement with a plurality of burners connected in series,
Figure 2
a cross section along line II-II in Figure 3 by a burner arrangement and
Figure 3
a section along line III-III in Figure 2 of the burner assembly.

In der gezeigten und beschriebenen Ausführungsform der Erfindung gemäss den Figuren 1 bis 3 ist ein Brenner 1 eingesetzt, wie er in der deutschen Patentschrift 31 53 336 beschrieben wird. Vorzugsweise wird ein Gasbrenner eingesetzt wie er in der EP-A-0 560 710, offenbart ist.In the embodiment of the invention shown and described in accordance with FIGS. 1 to 3, a burner 1 is used, as is described in German Patent 31 53 336. A gas burner as disclosed in EP-A-0 560 710 is preferably used.

Der Brenner 1 sitzt auf einem Gas/Luftgemisch-Zuführrohr 3, welches durch einen Stutzen 5 mit einer Gemischaufbereitungsanlage (nicht gezeigt) verbindbar ist. Der Brenner 1 kann direkt mit dem Zuführrohr 3 verschweisst oder mittels einer Schraubverbindung mit letzterem verbunden sein.The burner 1 is seated on a gas / air mixture supply pipe 3, which can be connected to a mixture preparation system (not shown) by a connector 5. The burner 1 can be welded directly to the feed pipe 3 or connected to the latter by means of a screw connection.

Das Zuführrohr 3, auf welchem in Serie eine Mehrzahl von Brennern 1 befestigt ist, ist in einem Gehäuse 7 angeordnet und wird von diesem umschlossen. Das Zuführrohr 3 liegt in einem Abstand zum Boden 8 U-förmig ausgebildeten Gehäuseunterteil 9 und wird vom oberen Ende des Stutzens 5 getragen. Zwischen der Unterseite des Zuführrohres 3 und dem Boden 8 des Gehäuseunterteiles 9 kann ein erstes Leitblech 11 eingesetzt sein. Zwischen den Längskanten des Leitbleches 11 und den vertikalen Schenkeln 10 des Gehäuseunterteiles 9 kann Frischluft, welche durch den Frischluftstutzen 13 in das Gehäuse 7 eingeleitet wird, gleichmässig verteilt nach oben geführt werden. Das U-förmige Gehäuseunterteil 9 besteht aus einem Stück und kann beispielsweise ca. 30 oder mehr Brenner 1, welche auf einem entsprechend langen Zuführrohr 3 befestigt sind, aufnehmen.The feed pipe 3, on which a plurality of burners 1 is fastened in series, is arranged in a housing 7 and is enclosed by this. The feed pipe 3 is at a distance from the bottom 8 U-shaped housing lower part 9 and is supported by the upper end of the nozzle 5. A first guide plate 11 can be inserted between the underside of the feed pipe 3 and the bottom 8 of the lower housing part 9. Between the longitudinal edges of the guide plate 11 and the vertical legs 10 of the lower housing part 9, fresh air, which is introduced into the housing 7 through the fresh air connector 13, can be distributed evenly upwards. The U-shaped lower housing part 9 consists of one piece and can accommodate, for example, approximately 30 or more burners 1, which are fastened on a correspondingly long feed pipe 3.

An den beiden Oberkanten der Schenkel 10 des Gehäuseunterteiles 9 sind Blechlamellen 15 mittels Schrauben 17 befestigt und überlappen sich in den Bereichen 21 um einige Millimeter. Die Lamellen 15 weisen am Durchtritt der Schraube 19 Schlitze 23 auf, die unterschiedliche Längenausdehnungen des Gehäuseunterteiles 9, das sich im kalten Teil befindet, und den Lamellen 15, die sehr heiss werden, ausgleichen können. Die beiden Lamellen 15 verlaufen geneigt zueinander und bilden entlang den sich gegenüberliegenden freien Kanten eine schlitzförmige Austrittsöffnung 25. In den beiden geneigt verlaufenden Abschnitten der Lamellen 15 sind Ausnehmungen 27 zum Einhängen von Lochgittern 29 ausgestanzt. An den Lochgittern 29 sind nach aussen ragende Laschen 31 angebracht, die mit Spiel durch die Ausnehmungen 27 hindurchgeführt werden können. Die Lochgitter 29 liegen folglich lose, jedoch allseitig gehalten zwischen den beiden Lamellen 15. Unterschiedliche Wärmedehnungen der letzten beiden Teile werden durch das Spiel der Laschen 31 in den Ausnehmungen 27 ausgeglichen.On the two upper edges of the legs 10 of the lower housing part 9, sheet metal fins 15 are fastened by means of screws 17 and overlap in the areas 21 by a few millimeters. The fins 15 have slots 23 at the passage of the screw 19, which can compensate for different lengths of the lower housing part 9, which is located in the cold part, and the fins 15, which become very hot. The two slats 15 run inclined to one another and form a slot-shaped outlet opening 25 along the opposite free edges. In the two inclined sections of the slats 15, recesses 27 are punched out for hanging perforated grids 29. On the perforated grids 29 outwardly projecting tabs 31 are attached, which can be passed through the recesses 27 with play. The perforated grid 29 are consequently loose, but held on all sides between the two fins 15. Different thermal expansions of the last two parts are compensated for by the play of the tabs 31 in the recesses 27.

Auf den Brennern 1 sitzen Luftleitmittel 33, denen jeweils zwei, drei oder mehr Brenner 1 zugeordnet sind. Die Luftleitmittel 33 bilden einen im Querschnitt im wesentlichen rechteckigen Flammraum 35, der oben offen ist und seitlich jeweils im Bereich der Flammenaustrittsöffnung 37 an der Oberfläche des Brenners 1 einen Luftströmungsteiler 39 aufweisen. Der Luftströmungsteiler 39 besteht aus einem rampenartig aus der Oberfläche der vertikalliegenden Abschnitte des Luftleitmittels 33 ausgebildeten Blechlappen. Letzterer kann durch Ausstanzen von Schlitzen 41 und Aufbiegen aus letzterem erzeugt werden. Die Luftströmungsteiler 39 überlappen den Brenner 1. Im dargestellten Beispiel ist jedes Luftleitmittel 33 mit zwei Brennern 1 durch Schrauben 43 verbunden. Es können auch drei oder vier Brenner 1 ein gemeinsames Luftleitmittel 33 aufweisen. Vorzugsweise ist nur eine der Verbindungen zwischen dem Leitmittel 33 und den Brennern 1 fest. Die zusätzlichen Verbindungen sind so ausgestaltet, dass eine Dilatation, hervorgerufen durch unterschiedliche Ausdehnung der einzelnen Teile, möglich ist. Zwischen den nebeneinander angeordneten Brennern 1 sind die Luftleitmittel 33 durch Umbiegen von deren unteren Abschnitten in die Horizontale verschlossen. Der Abschluss muss nicht vollständig sein; doch soll der Eintritt eines grösseren Luftstromes verhindert werden.Air guiding means 33 are seated on the burners 1, each of which is assigned two, three or more burners 1. The air guiding means 33 form a flame chamber 35 which is essentially rectangular in cross section, which is open at the top and laterally in the area of the flame outlet opening 37 have an air flow divider 39 on the surface of the burner 1. The air flow divider 39 consists of a sheet metal tab formed like a ramp from the surface of the vertical sections of the air guide means 33. The latter can be produced by punching out slots 41 and bending them out. The air flow dividers 39 overlap the burner 1. In the example shown, each air guide 33 is connected to two burners 1 by screws 43. Three or four burners 1 can also have a common air guiding means 33. Preferably only one of the connections between the guide means 33 and the burners 1 is fixed. The additional connections are designed in such a way that dilation, caused by different expansion of the individual parts, is possible. Between the burners 1 arranged side by side, the air guiding means 33 are closed by bending their lower sections into the horizontal. The degree does not have to be complete; however, the entry of a larger air flow should be prevented.

Zwischen den Oberkanten 45 der Luftleitmittel 33 und dem Lochgitter ist ein Zwischenraum offengelassen, der den Durchtritt von Luft in den Flammraum 35 von oben ermöglicht.An intermediate space is left between the upper edges 45 of the air guide means 33 and the perforated grid, which allows air to pass into the flame space 35 from above.

Zur Verbindung eines über die Flammenaustrittsöffnungen 37 hinwegfliessenden Luftstromes können L-förmige Lamellen 46 zwischen den seitlichen Leitmitteln 33 eingesetzt sein. Die Lamellen 46 können sich oben über den Bereich seitlich der Flamme 47 erstrecken.To connect an air flow flowing over the flame outlet openings 37, L-shaped fins 46 can be inserted between the lateral guide means 33. The fins 46 can extend above the area to the side of the flame 47.

Im folgenden wird die Funktionsweise der Brenneranordnung näher erläutert. Durch den Stutzen 5 wird in stöchiometrischem Verhältnis gemischtes Brenngas und Luft in das Zuführrohr 3 eingeführt welches von dort in gleichmässiger Menge den Brennern 1 zufliesst. Durch nicht näher beschriebene und auch nicht dargestellte Zündmittel, z.B. einer Zündkerze, wird das aus der Flammenaustrittsöffnung 37 austretende Gas/Luft-Gemisch entzündet, und es bildet sich über jedem Brenner innerhalb des Flammraumes 35 eine Flamme 47.The mode of operation of the burner arrangement is explained in more detail below. Through the nozzle 5, mixed fuel gas and air are introduced in a stoichiometric ratio into the feed pipe 3, which flows from there to the burners 1 in a uniform amount. By means of ignition means, not described and also not shown, e.g. a spark plug, the gas / air mixture emerging from the flame outlet opening 37 is ignited and a flame 47 forms over each burner within the flame space 35.

Durch den Frischluftstutzen 13 fliesst in vorgegebener einstellbarer Menge Frischluft von unten in den U-förmigen Gehäuseteil 9 und wird, falls vorhanden, durch das Leitblech 11 entlang den Seitenwänden 10 des Gehäuses 9 nach oben gelenkt. Durch die Luftströmungsteiler 39 wird ein Teil der nach oben strömenden Luft in den Flammraum 35 hineingeleitet und gelangt in Kontakt mit dem unteren Teil der Flamme 47 und vermischt sich mit dem bereits entzündeten Gas/Luft-Gemisch. Diese seitlich von unten in die Flamme eingespeiste Luft hat eine ähnliche Funktion wie die Sekundärluft bei einem Bunsenbrenner. Die nicht von den Luftströmungsteilern 39 abgezweigte und in den Flammraum 35 eingeleitete Frischluft strömt aussen an den Luftleitmitteln 33 nach oben und gelangt, umgelenkt am Lochgitter 29, von oben in den Flammraum 35 und bewirkt dort eine Oxydation von noch nicht verbrannten Bestandteilen des heissen Brenngasluftgemisches. Zusammen mit den heissen Verbrennungsprodukten, der unten in den Flammraum 35 eingeführten zusätzlichen Frischluft strömt das heisse Gemisch durch das Lochgitter 29 nach oben und kann die Brenneranordnung durch die Austrittsöffnung 25 verlassen.Through the fresh air connector 13, fresh air flows from below into the U-shaped housing part 9 in a predetermined, adjustable amount, and if present, directed upwards by the guide plate 11 along the side walls 10 of the housing 9. Through the air flow dividers 39, part of the air flowing upwards is led into the flame space 35 and comes into contact with the lower part of the flame 47 and mixes with the already ignited gas / air mixture. This air, which is fed into the flame laterally from below, has a similar function as the secondary air in a Bunsen burner. The fresh air which is not branched off from the air flow dividers 39 and introduced into the flame chamber 35 flows upwards outside the air guide means 33 and, deflected at the perforated grille 29, reaches the flame chamber 35 from above and there causes an oxidation of components of the hot fuel gas air mixture that have not yet burned. Together with the hot combustion products, the additional fresh air introduced into the flame space 35 at the bottom, the hot mixture flows up through the perforated grille 29 and can leave the burner arrangement through the outlet opening 25.

Die von unten in den Gehäuseunterteil 9 eingeleitete Frischluft kühlt sowohl das Zuführrohr 3 als auch den Brenner 1 sowie den Gehäuseunterteil 9 und die unteren Bereiche der Blechlamellen 15. Beim Eintritt der an den Luftströmungsteilern 39 vorbeiströmenden Luft in den Flammraum 35 ist diese bereits vom Flammraum 35 seitlich abgestrahlte Wärme angewärmt.The fresh air introduced from below into the lower housing part 9 cools both the feed pipe 3 and the burner 1 as well as the lower housing part 9 and the lower areas of the sheet metal fins 15. When the air flowing past the air flow dividers 39 enters the flame chamber 35, it is already from the flame chamber 35 radiated heat warmed to the side.

Messungen haben ergeben, dass die an der Austrittsöffnung 25 austretende heisse Luft nur noch in sehr geringem Masse mit Schadstoffen belastet ist und die vorgeschriebenen Werte der Luftreinhalteverordnungen erfüllt.Measurements have shown that the hot air emerging at the outlet opening 25 is contaminated to a very small extent with pollutants and meets the prescribed values of the air pollution control regulations.

Claims (9)

  1. A method for producing warm air with fuel gas which burns in a flame (47) over a burner (1) in which method the burner (1) is inserted into a housing (7) with openings on its top side, and fresh air is directed into the housing (7) from below, warmed and exits from the top of the housing (7), characterized in that the flame (47) is laterally separated from the housing (7) by air-direction means (33) which create a flame space (35), and that the air which flows upwards from below into the housing (7) is directed into the vicinity of the flame space's (35) floor, and that a further portion of the air is directed from the upper section into the flame space (35).
  2. A burner arrangement for gaseous fuels used to produce warm air in which the burner is inserted into a housing provided with a warm-air exit opening in its upper section and a fresh-air entrance opening in its lower section which is arranged in such a way that the air can flow around it, characterized in that air direction means (33) are located on the burner (1) above the flame exit opening (37), and these air direction means (33) create a flame space (35) which delimits the shape of the flame (47), and air-stream dividers (39) form a part of the air-direction means (33) and direct a portion of the fresh air directed into the housing (7) and into the vicinity of flame space's (35) floor and a further portion of the fresh air upwards into the flame space (35).
  3. A burner arrangement as claimed in Claim 2, characterized in that the air-direction means (33) comprise metal sheets attached to the burner (1), and the ramp-shaped air-stream dividers (39) which are bent outwards are stamped out of the said metal sheets near the flame exit opening (37) and extend into the flow area outside the burner (1).
  4. A burner arrangement as claimed in any of the claims 2 or 3, characterized in that a perforated metal sheet (29) is arranged above the air-direction means (33) and at a distance from their upper edges (45).
  5. A burner arrangement as claimed in Claim 4, characterized in that the perforated metal sheet (29) is fastened by means of a brackets (31) which are attached with a certain amount of play in recesses (27) on the housing (7).
  6. A burner arrangement as claimed in any of the claims 2 to 5, characterized in that the housing (7) is provided with a U-shaped lower housing part (9) and two sheet-metal lamellae (15) which form a constriction in the top of the lower housing part (9) and a slit-shaped exit opening (25).
  7. A burner arrangement as claimed in Claim 6, characterized in that several sheet-metal lamellae (15) are arranged on the housing (7) so that they adjoin one another and overlap and that each sheet-metal lamella (15) is connected to the lower housing section (9) in such a way that it can be shifted for the purpose of equalizing uneven thermal expansion.
  8. A burner arrangement as claimed in any of claims 2 to 7, characterized in that each of the air-direction means (33) is permanently connected to only one burner (1).
  9. A burner arrangement as claimed in any of claims 2 to 8, characterized in that lamellae (46) are arranged perpendicularly to the air-direction means (33).
EP19930810131 1992-03-11 1993-02-24 Method for the production of hot air and burner for the combustion of gaseous fuels Expired - Lifetime EP0560713B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH788/92 1992-03-11
CH78892 1992-03-11

Publications (3)

Publication Number Publication Date
EP0560713A2 EP0560713A2 (en) 1993-09-15
EP0560713A3 EP0560713A3 (en) 1993-11-03
EP0560713B1 true EP0560713B1 (en) 1997-05-07

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EP19930810131 Expired - Lifetime EP0560713B1 (en) 1992-03-11 1993-02-24 Method for the production of hot air and burner for the combustion of gaseous fuels

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EP (1) EP0560713B1 (en)
DE (1) DE59306361D1 (en)

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EP1059385A1 (en) 1999-06-08 2000-12-13 Brändle Metallbau AG Method for reconditioning sliding pavements and apparatus used with such method

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CH651645A5 (en) * 1980-12-03 1985-09-30 Febrag Ag GAS BURNER ARRANGEMENT AND USE THEREOF FOR GENERATING HOT AIR.
JPS5921909A (en) * 1982-07-28 1984-02-04 Toshiba Corp Low nox burner
DE8626548U1 (en) * 1986-10-02 1986-11-13 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Atmospheric gas burner
DE3740997A1 (en) * 1987-12-03 1989-06-15 Gaswaerme Inst Ev Method and burner for burning a mixture of fuel and primary air

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EP0560713A3 (en) 1993-11-03
EP0560713A2 (en) 1993-09-15
DE59306361D1 (en) 1997-06-12

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