EP1130315A2 - Atmospheric gas burner - Google Patents

Atmospheric gas burner Download PDF

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Publication number
EP1130315A2
EP1130315A2 EP01102645A EP01102645A EP1130315A2 EP 1130315 A2 EP1130315 A2 EP 1130315A2 EP 01102645 A EP01102645 A EP 01102645A EP 01102645 A EP01102645 A EP 01102645A EP 1130315 A2 EP1130315 A2 EP 1130315A2
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EP
European Patent Office
Prior art keywords
burner
section
mixture
atmospheric gas
gas burner
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Granted
Application number
EP01102645A
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German (de)
French (fr)
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EP1130315A3 (en
EP1130315B1 (en
Inventor
Marcus Bienzle
Markus Rotert
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP1130315A3 publication Critical patent/EP1130315A3/en
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Publication of EP1130315B1 publication Critical patent/EP1130315B1/en
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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
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/045—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with a plurality of burner bars assembled together, e.g. in a grid-like arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/08—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with axial outlets at the burner head
    • 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

Definitions

  • the invention relates to an atmospheric gas burner according to the preamble of claim 1.
  • Such atmospheric gas burners also referred to as injector burners, are generally known and have found widespread use both for heating domestic water and for heating water.
  • an atmospheric gas burner is included several arranged in parallel next to each other Burner elements with a mixing body and one Burner plate with mixture outlet openings known.
  • the burner plate is essentially curved in a semi-cylindrical shape executed and as an attachable unit with the mixing body connected.
  • the mixing body has two mixing tubes each delta-shaped narrowing the flow cross-section Have constrictions that in the sheet metal elements formed mixing tubes are molded. In the sheet metal elements there are also openings in which cooling pipes for Cooling the burner elements are performed.
  • the object of the invention is to provide an atmospheric gas burner without water cooling, which has a high combustion stability and a low NO x emission with a modulation range greater than 1: 2.5.
  • the atmospheric gas burner according to the invention with the characterizing features of claim 1 has the advantage that a primary air ratio of 0.5 to 1.0 is achieved.
  • the measures according to the invention make it possible to achieve a reduction in the NO x exhaust gas values down to 20 mg / kWh without additional water cooling.
  • a homogeneous mixture of fuel gas and air is obtained through the geometry of the mixing tubes. Through an optimized distance between the burner elements and the gap formed in between is over the entire Modulation range of the gas burner sufficient Secondary air supply and complete combustion guaranteed.
  • the flow conditions of the secondary air also implement cooling of the burner elements, especially in the area of the burner plate or burner zone. At the same time, the thermal stress on the Material of the burner element less.
  • Figure 1 shows a view of the broad side of a Burner element
  • Figure 2 is a view of the narrow side of the Burner element in Figure 1
  • Figure 3 is a sectional view through the burner element in Figure 1 along the line III-III
  • Figure 4 is a partial section through two adjacent Burner elements
  • Figure 5 is a view of the broad side of a Burner element according to a second embodiment
  • Figure 6 is a view of the narrow side of the burner element in Figure 5
  • Figure 7 is a sectional view through the Burner element in Figure 5 along the line VII-VII.
  • Figure 1 shows a burner element 10 one not closer shown atmospheric gas burner.
  • the atmospheric gas burner consists of a number of Burner elements 10 arranged in parallel next to one another.
  • About the arrangement of a corresponding number of Burner elements 10 can have any burner output increase.
  • the burner element 10 has one of two bowl-shaped Sheet metal halves 11, 12 formed housing 14 and On the combustion chamber side, a ridge ledge Burner plate 16 with mixture outlet openings 18, in which Embodiment according to Figures 1, 2 and 3, the burner plate 16 is arched.
  • Each burner element 10 has two mixing tubes 20 (Injectors) each with an air inlet opening 21, a flow channel section 23 and a diffuser section 25 on.
  • the flow channel section 23 has at one point 35 the narrowest cross section of the mixing tube 20.
  • the Air inlet openings 21 are used to introduce Primary air, each air inlet opening 21 having a gas nozzle 27 is assigned.
  • the fuel gas is in via the gas nozzle 27 the mixing tube 20 injected.
  • the flow channel section widens from point 35 23 towards the diffuser section 25 slightly conical. To the Flow channel section 23 closes in Flow direction of the fuel gas-air mixture Diffuser section 25 on.
  • the diffuser sections 25 widen each symmetrically to one by the Center line of the mixing tubes 18 running level 28 in Direction of the broad side of the burner element 10 continuously in the form of a parabola-like extension 29.
  • the extension 29 of a mixing tube merges with the extension 29 of the adjacent mixing tube on one Digit 31, so that both parabola-like extensions 29 open into a common distribution chamber 30.
  • the Distribution chamber 30 is the burner plate 16 and Mixture outlet openings 18 upstream and extends essentially about the extension of the burner plate 16.
  • the diffuser sections 25 each have one according to FIG the cross section with respect to the narrow side of the Burner element 10 constricting constriction 32, which in Essentially symmetrical to one through the center line extending plane 33 is formed.
  • Left and right of the constriction 29 form two diffuser channels 40, whose flow cross-sections are larger than that Flow cross section of the constriction 29 at any Job. This ensures an even mixture distribution in the distribution chamber 30 over the entire extent of the Mixture outlet openings 18 achieved.
  • the area of the mixture outlet openings 18 and the flow conditions of the fuel gas-air mixture in the two mixing tubes 20 are coordinated with one another in such a way that the heat load at the mixture outlet openings 18 of the burner plate 16 is ⁇ 300 W / cm 2 .
  • the mixture outlet openings 18 and the mixing tubes 20 were dimensioned accordingly in order to achieve the low surface load or thermal load on the mixture outlet openings 18 of the burner plate 16, the area of the mixture outlet openings 18 corresponding approximately to 3-5 times the total cross-sectional area of the mixing tubes 20 at the narrowest point 35.
  • These geometric conditions have an influence on the flow rate of the fuel gas-air mixture in the mixing tubes 20, a higher flow rate of the fuel gas-air mixture meaning a higher surface load or thermal load.
  • the width B is approximately 1.5-2 times the height H. The design also enables a significantly lower overall height H compared to fully premixed gas burners
  • a section of two arranged side by side Burner elements 10 shows Figure 4. Between the Burner elements 10 is a gap 34 for the supply of Secondary air with a width X is formed, the Width X about 1/2 to 1/5 the depth Y of burner plate 16 is. Because of this dimensioning, the entire modulation range of the atmospheric gas burner achieved an adequate secondary air supply, whereby complete combustion is guaranteed. About the Secondary air supply also cools the Burner element 10, in particular in the area of Burner plate 16 instead.
  • FIG. 5 Another embodiment of a burner element 10 show Figures 5, 6 and 7, with the same elements are designated by the same reference numerals.
  • the Burner plate 16 is flat.
  • this Embodiment according to Figure 7 is the cross section in Area of extension 29 narrowing section of the Narrow side of the fuel assembly 10 is considered a narrowing channel 36 formed that is symmetrical to the plane running through the center line of the mixing tubes 20 33 is formed.
  • the narrowing channel 36 has a delta-shaped Expansion 38 on, which is symmetrical to that by the Centerline plane 28 is.
  • This one too Embodiment forms left and right of narrowing channel 36 from two diffuser channels 40, the Flow cross sections is larger than that Flow cross section of the narrowing channel 36 at one anywhere.

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

Abstract

The atmospheric gas burner has several parallel arranged burner components (10) with at least two mixture tubes and a burner plate with mixture outlet apertures. The mixture tubes are fed with a combustion gas - air mixture via gas nozzles and air inlet apertures. The surface of the mixture outlet apertures and the flow ratio of the combustion gas - air mixture in the mixture tubes (20) are so matched to each other that the heat load on the mixture outlet apertures of the burner plate (16) is less than or equal to 300 W/cm<2>. The surface of the mixture outlet apertures corresponds to 3-5 times the cross-section of the two mixture tubes at the narrowest point. The mixture tubes in relation the wide side of the burner component have a widening diffuser section (25), which in relation to the narrow side of the burner component has a narrowing section (36) of the cross-section (20).

Description

Die Erfindung betrifft einen atmosphärischen Gasbrenner gemäß dem Oberbegriff des Anspruchs 1.The invention relates to an atmospheric gas burner according to the preamble of claim 1.

Stand der TechnikState of the art

Derartige auch als Injektorbrenner bezeichnete Atmosphärische Gasbrenner sind allgemein bekannt und haben sowohl zur Brauchwasser- als auch zur Heizwassererwärmung eine weite Verbreitung gefunden. Das Ziel bei der Weiterentwicklung dieser ohne Wasserkühlung auskommenden Gasbrenner besteht darin, den Schadstoffgehalt der Abgase, insbesondere den NOx-Gehalt weiter zu verringern.Such atmospheric gas burners, also referred to as injector burners, are generally known and have found widespread use both for heating domestic water and for heating water. The goal in the further development of these gas burners, which do not require water cooling, is to further reduce the pollutant content of the exhaust gases, in particular the NO x content.

Aus der EP 769 656 ist ein atmosphärischer Gasbrenner mit mehreren, parallel nebeneinander angeordneten Brennerelementen mit einem Mischkörper und einer Brennerplatte mit Gemischaustrittsöffnungen bekannt. Die Brennerplatte ist im Wesentlichen halbzylinderförmig gewölbt ausgeführt und als aufsteckbare Einheit mit dem Mischkörper verbunden. Der Mischkörper besitzt zwei Mischrohre, die jeweils den Strömungsquerschnitt verengende, deltaförmige Einschnürungen aufweisen, die in die aus Blechelementen gebildeten Mischrohre eingeformt sind. In den Blechelementen sind ferner Öffnungen vorhanden, in denen Kühlrohre zum Kühlen der Brennerelemente geführt sind.From EP 769 656 an atmospheric gas burner is included several arranged in parallel next to each other Burner elements with a mixing body and one Burner plate with mixture outlet openings known. The The burner plate is essentially curved in a semi-cylindrical shape executed and as an attachable unit with the mixing body connected. The mixing body has two mixing tubes each delta-shaped narrowing the flow cross-section Have constrictions that in the sheet metal elements formed mixing tubes are molded. In the sheet metal elements there are also openings in which cooling pipes for Cooling the burner elements are performed.

Aufgabe der Erfindung ist es, einen atmosphärischen Gasbrenner ohne Wasserkühlung zu schaffen, der bei einem Modulationsbereich größer 1:2,5 eine hohe Verbrennungsstabilität und eine geringe NOx-Emission besitzt.The object of the invention is to provide an atmospheric gas burner without water cooling, which has a high combustion stability and a low NO x emission with a modulation range greater than 1: 2.5.

Vorteile der ErfindungAdvantages of the invention

Der erfindungsgemäße atmosphärische Gasbrenner mit den kennzeichnenden Merkmalen des Anspruchs 1 hat den Vorteil, dass eine Primärluftzahl von 0,5 bis 1,0 erreicht wird. Die erfindungsgemäßen Maßnahmen ermöglichen es, dass ohne eine zusätzliche Wasserkühlung eine Reduktion der NOx-Abgaswerte bis auf 20 mg/kWh erzielbar ist.The atmospheric gas burner according to the invention with the characterizing features of claim 1 has the advantage that a primary air ratio of 0.5 to 1.0 is achieved. The measures according to the invention make it possible to achieve a reduction in the NO x exhaust gas values down to 20 mg / kWh without additional water cooling.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Ausgestaltungen des Gegenstands des Hauptanspruchs möglich. Eine homogene Mischung von Brenngas und Luft wird über die Geometrie der Mischrohre erzielt. Durch einen optimierten Abstand der Brennerelemente und dem dazwischen ausgebildeten Spalt wird über den gesamten Modulationsbereich des Gasbrenners eine ausreichende Sekundärluftzuführung und eine vollständige Verbrennung gewährleistet. Die Strömungsbedingungen der Sekundärluft realisieren außerdem eine Kühlung der Brennerelemente, insbesondere im Bereich der Brennerplatte bzw. Brennerzone. Gleichzeitig ist dadurch die thermische Beanspruchung des Materials des Brennerelements geringer.By the measures listed in the subclaims advantageous embodiments of the subject of Main claim possible. A homogeneous mixture of fuel gas and air is obtained through the geometry of the mixing tubes. Through an optimized distance between the burner elements and the gap formed in between is over the entire Modulation range of the gas burner sufficient Secondary air supply and complete combustion guaranteed. The flow conditions of the secondary air also implement cooling of the burner elements, especially in the area of the burner plate or burner zone. At the same time, the thermal stress on the Material of the burner element less.

Zeichnungdrawing

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Figur 1 zeigt eine Ansicht der Breitseite eines Brennerelements, Figur 2 eine Ansicht der Schmalseite des Brennerelements in Figur 1, Figur 3 eine Schnittdarstellung durch das Brennerelement in Figur 1 nach der Linie III-III, Figur 4 einen Teilschnitt durch zwei benachbarte Brennerelemente, Figur 5 eine Ansicht der Breitseite eines Brennerelements gemäß einem zweiten Ausführungsbeispiel, Figur 6 eine Ansicht der Schmalseite des Brennerelements in Figur 5 und Figur 7 eine Schnittdarstellung durch das Brennerelement in Figur 5 nach der Linie VII-VII.Embodiments of the invention are in the drawing shown and in the following description explained. Figure 1 shows a view of the broad side of a Burner element, Figure 2 is a view of the narrow side of the Burner element in Figure 1, Figure 3 is a sectional view through the burner element in Figure 1 along the line III-III, Figure 4 is a partial section through two adjacent Burner elements, Figure 5 is a view of the broad side of a Burner element according to a second embodiment, Figure 6 is a view of the narrow side of the burner element in Figure 5 and Figure 7 is a sectional view through the Burner element in Figure 5 along the line VII-VII.

AusführungsbeispieleEmbodiments

Figur 1 zeigt ein Brennerelement 10 eines nicht näher dargestellten atmosphärischen Gasbrenners. Der atmosphärische Gasbrenner besteht aus einer Anzahl von parallel nebeneinander angeordneten Brennerelementen 10. Über die Anordnung einer entsprechenden Anzahl von Brennerelementen 10 läßt sich die Brennerleistung beliebig erhöhen.Figure 1 shows a burner element 10 one not closer shown atmospheric gas burner. The atmospheric gas burner consists of a number of Burner elements 10 arranged in parallel next to one another. About the arrangement of a corresponding number of Burner elements 10 can have any burner output increase.

Das Brennerelement 10 hat ein aus zwei schalenförmigen Blechhälften 11, 12 gebildetes Gehäuse 14 sowie brennraumseitig eine als Firstleiste ausgebildete Brennerplatte 16 mit Gemischaustrittsöffnungen 18, wobei im Ausführungsbeispiel gemäß Figur 1, 2 und 3 die Brennerplatte 16 gewölbt ausgebildet ist.The burner element 10 has one of two bowl-shaped Sheet metal halves 11, 12 formed housing 14 and On the combustion chamber side, a ridge ledge Burner plate 16 with mixture outlet openings 18, in which Embodiment according to Figures 1, 2 and 3, the burner plate 16 is arched.

Jedes Brennerelement 10 weist zwei Mischrohre 20 (Injektoren) mit jeweils einer Lufteintrittsöffnung 21, einem Strömungskanalabschnitt 23 und einem Diffusorabschnitt 25 auf. Der Strömungskanalabschnitt 23 weist an einer Stelle 35 den engsten Querschnitt des Mischrohres 20 auf. Die Lufteintrittsöffnungen 21 dienen zum Einleiten von Primärluft, wobei jeder Lufteintrittsöffnung 21 eine Gasdüse 27 zugeordnet ist. Über die Gasdüse 27 wird das Brenngas in das Mischrohr 20 eingedüst.Each burner element 10 has two mixing tubes 20 (Injectors) each with an air inlet opening 21, a flow channel section 23 and a diffuser section 25 on. The flow channel section 23 has at one point 35 the narrowest cross section of the mixing tube 20. The Air inlet openings 21 are used to introduce Primary air, each air inlet opening 21 having a gas nozzle 27 is assigned. The fuel gas is in via the gas nozzle 27 the mixing tube 20 injected.

Ab der Stelle 35 erweitert sich der Strömungskanalabschnitt 23 zum Diffusorabschnitt 25 hin leicht konisch. An den Strömungskanalabschnitt 23 schließt sich in Strömungsrichtung des Brenngas-Luft-Gemischs der Diffusorabschnitt 25 an. Die Diffusorabschnitte 25 verbreitern sich jeweils symmetrisch zu einer durch die Mittellinie der Mischrohre 18 verlaufenden Ebene 28 in Richtung der Breitseite des Brennerelements 10 kontinuierlich in Form einer parabelähnlichen Erweiterung 29. Die Erweiterung 29 des einen Mischrohres vereinigt sich mit der Erweiterung 29 des benachbarten Mischrohres an einer Stelle 31, so dass beide parabelähnlichen Erweiterungen 29 in eine gemeinsame Verteilkammer 30 münden. Die Verteilkammer 30 ist der Brennerplatte 16 und den Gemischaustrittsöffnungen 18 vorgeschaltet und erstreckt sich im Wesentlichen über die Ausdehnung der Brennerplatte 16.The flow channel section widens from point 35 23 towards the diffuser section 25 slightly conical. To the Flow channel section 23 closes in Flow direction of the fuel gas-air mixture Diffuser section 25 on. The diffuser sections 25 widen each symmetrically to one by the Center line of the mixing tubes 18 running level 28 in Direction of the broad side of the burner element 10 continuously in the form of a parabola-like extension 29. The extension 29 of a mixing tube merges with the extension 29 of the adjacent mixing tube on one Digit 31, so that both parabola-like extensions 29 open into a common distribution chamber 30. The Distribution chamber 30 is the burner plate 16 and Mixture outlet openings 18 upstream and extends essentially about the extension of the burner plate 16.

Die Diffusorabschnitte 25 weisen jeweils gemäß Figur 3 eine den Querschnitt in Bezug auf die Schmalseite des Brennerelements 10 verengende Einschnürung 32 auf, die im Wesentlichen symmetrisch zu einer durch die Mittellinie verlaufenden Ebene 33 ausgebildet ist. Links und rechts von der Einschnürung 29 bilden sich zwei Diffusorkanäle 40 aus, deren Strömungsquerschnitte größer sind als der Strömungsquerschnitt der Einschnürung 29 an einer beliebigen Stelle. Dadurch wird eine gleichmäßige Gemischverteilung in der Verteilkammer 30 über die gesamte Erstreckung der Gemischaustrittsöffnungen 18 erzielt. The diffuser sections 25 each have one according to FIG the cross section with respect to the narrow side of the Burner element 10 constricting constriction 32, which in Essentially symmetrical to one through the center line extending plane 33 is formed. Left and right of the constriction 29 form two diffuser channels 40, whose flow cross-sections are larger than that Flow cross section of the constriction 29 at any Job. This ensures an even mixture distribution in the distribution chamber 30 over the entire extent of the Mixture outlet openings 18 achieved.

Wesentlich ist, dass die Fläche der Gemischaustrittsöffnungen 18 und die Strömungsverhältnisse des Brenngas-Luft-Gemischs in den beiden Mischrohren 20 so aufeinander abgestimmt sind, dass die Wärmebelastung an den Gemischaustrittsöffnungen 18 der Brennerplatte 16 ≤ 300 W/cm2 beträgt. Zur Erzielung der geringen Flächenbelastung bzw. Wärmebelastung an den Gemischaustrittsöffnungen 18 der Brennerplatte 16 wurden die Gemischaustrittsöffnungen 18 und die Mischrohre 20 entsprechenden dimensioniert, wobei die Fläche der Gemischaustrittsöffnungen 18 etwa dem 3-5fache der gesamten Querschnittsfläche der Mischrohre 20 an der engsten Stelle 35 entspricht. Durch diese geometrischen Bedingungen wird Einfluß auf die Strömungsgeschwindigkeit des Brenngas-Luft-Gemisches in den Mischrohren 20 genommen, wobei eine höhere Strömungsgeschwindigkeit des Brenngas-Luft-Gemisches eine höhere Flächenbelastung bzw. Wärmebelastung bedeutet. Außerdem beträgt bei dem in Figur 1 dargestellten Brennerelement 10 die Breite B etwa dem 1,5-2fache der Höhe H. Die Auslegung ermöglicht zudem ein deutlich geringere Gesamthöhe H gegenüber vollvormischenden GasbrennernIt is essential that the area of the mixture outlet openings 18 and the flow conditions of the fuel gas-air mixture in the two mixing tubes 20 are coordinated with one another in such a way that the heat load at the mixture outlet openings 18 of the burner plate 16 is ≤ 300 W / cm 2 . The mixture outlet openings 18 and the mixing tubes 20 were dimensioned accordingly in order to achieve the low surface load or thermal load on the mixture outlet openings 18 of the burner plate 16, the area of the mixture outlet openings 18 corresponding approximately to 3-5 times the total cross-sectional area of the mixing tubes 20 at the narrowest point 35. These geometric conditions have an influence on the flow rate of the fuel gas-air mixture in the mixing tubes 20, a higher flow rate of the fuel gas-air mixture meaning a higher surface load or thermal load. In addition, in the burner element 10 shown in FIG. 1, the width B is approximately 1.5-2 times the height H. The design also enables a significantly lower overall height H compared to fully premixed gas burners

Es wurde weiterhin ermittelt, dass eine homogene Mischung von Brenngas und Primärluft vom Verhältnis von Mischrohrlänge L und Mischrohrquerschnitt abhängt, wobei die Mischrohrlänge L etwa das 4-5fache des Durchmessers an der engsten Stelle 35 des Mischrohres 20 beträgt.It was also found that a homogeneous mixture of fuel gas and primary air on the ratio of Mixing tube length L and mixing tube cross-section depends, the Mixing tube length L about 4-5 times the diameter at the narrowest point 35 of the mixing tube 20.

Einen Ausschnitt von zwei nebeneinander angeordneten Brennerelementen 10 zeigt Figur 4. Zwischen den Brennerelementen 10 ist ein Spalt 34 zur Zuführung von Sekundärluft mit einer Breite X ausgebildet, wobei die Breite X etwa 1/2 bis 1/5 der Tiefe Y der Brennerplatte 16 beträgt. Aufgrund dieser Dimensionierung wird über den gesamten Modulationsbereich des atmosphärischen Gasbrenners eine ausreichende Sekundärluftzuführung erzielt, wodurch eine vollständige Verbrennung gewährleistet wird. Über die Sekundärluftzuführung findet außerdem eine Kühlung des Brennerelements 10, insbesondere im Bereich der Brennerplatte 16 statt.A section of two arranged side by side Burner elements 10 shows Figure 4. Between the Burner elements 10 is a gap 34 for the supply of Secondary air with a width X is formed, the Width X about 1/2 to 1/5 the depth Y of burner plate 16 is. Because of this dimensioning, the entire modulation range of the atmospheric gas burner achieved an adequate secondary air supply, whereby complete combustion is guaranteed. About the Secondary air supply also cools the Burner element 10, in particular in the area of Burner plate 16 instead.

Ein weiteres Ausführungsbeispiel eines Brennerelements 10 zeigen die Figuren 5, 6 und 7, wobei gleiche Elemente mit den gleichen Bezugszeichen bezeichnet sind. Hierbei ist die Brennerplatte 16 eben ausgebildet. Bei diesem Ausführungsbeispiel gemäß Figur 7 ist der den Querschnitt im Bereich der Erweiterung 29 verengende Abschnitt von der Schmalseite des Brennelements 10 betrachtet als ein verengender Kanal 36 ausgebildet, der symmetrisch zu der durch die Mittellinie der Mischrohre 20 verlaufenden Ebene 33 ausgebildet ist. Über die Breitseite des Brennerelements 10 weist der verengende Kanal 36 eine deltaförmige Aufweitung 38 auf, die symmetrisch zu der durch die Mittellinie verlaufenden Ebene 28 ist. Auch bei diesem Ausführungsbeispiel bildet sich links und rechts vom verengenden Kanal 36 zwei Diffusorkanäle 40 aus, deren Strömungsquerschnitte größer ist als der Strömungsquerschnitt des verengenden Kanals 36 an einer beliebigen Stelle.Another embodiment of a burner element 10 show Figures 5, 6 and 7, with the same elements are designated by the same reference numerals. Here is the Burner plate 16 is flat. With this Embodiment according to Figure 7 is the cross section in Area of extension 29 narrowing section of the Narrow side of the fuel assembly 10 is considered a narrowing channel 36 formed that is symmetrical to the plane running through the center line of the mixing tubes 20 33 is formed. Over the broad side of the burner element 10, the narrowing channel 36 has a delta-shaped Expansion 38 on, which is symmetrical to that by the Centerline plane 28 is. This one too Embodiment forms left and right of narrowing channel 36 from two diffuser channels 40, the Flow cross sections is larger than that Flow cross section of the narrowing channel 36 at one anywhere.

Claims (9)

Atmosphärischer Gasbrenner mit mehreren, im Wesentlichen parallel zueinander angeordneten Brennerelementen mit mindestens zwei Mischrohren und einer Brennerplatte mit Gemischaustrittsöffungen, wobei die Mischrohre über Gasdüsen und Lufteintrittsöffnungen mit einem Brenngas-Luft-Gemisch gespeist sind, dadurch gekennzeichnet, dass die Fläche der Gemischaustrittsöffnungen (18) und die Strömungsverhältnisse des Brenngas-Luft-Gemischs in den Mischrohren (20) so aufeinander abgestimmt sind, dass die Wärmebelastung an den Gemischaustrittsöffnungen (18) der Brennerplatte (16) ≤ 300 W/cm2 beträgt.Atmospheric gas burner with a plurality of burner elements arranged essentially parallel to one another with at least two mixing tubes and a burner plate with mixture outlet openings, the mixing tubes being fed with a fuel gas / air mixture via gas nozzles and air inlet openings, characterized in that the surface of the mixture outlet openings (18) and the flow conditions of the fuel gas-air mixture in the mixing tubes (20) are coordinated with one another in such a way that the heat load at the mixture outlet openings (18) of the burner plate (16) is 300 300 W / cm 2 . Atmosphärischer Gasbrenner nach Anspruch 1, dadurch gekennzeichnet, dass die Fläche der Gemischaustrittsöffnungen (18) dem 3-5fachen des Querschnitts der beiden Mischrohre (20) an der engsten Stelle (35) entspricht.Atmospheric gas burner according to claim 1, characterized in that the area of the mixture outlet openings (18) corresponds to 3-5 times the cross section of the two mixing tubes (20) at the narrowest point (35). Atmosphärischer Gasbrenner nach Anspruch 1, dadurch gekennzeichnet, dass die Breite (B) des Brennerelements (10) dem 1,5-2fachen der Höhe (H) des Brennerelements (10) entspricht. Atmospheric gas burner according to claim 1, characterized in that the width (B) of the burner element (10) corresponds to 1.5-2 times the height (H) of the burner element (10). Atmosphärischer Gasbrenner nach Anspruch 1, dadurch gekennzeichnet, dass die Mischrohrlänge (L) dem 4-5fache des Durchmessers des Mischrohres (20) an der engsten Stelle (35) entspricht.Atmospheric gas burner according to claim 1, characterized in that the mixing tube length (L) corresponds to 4-5 times the diameter of the mixing tube (20) at the narrowest point (35). Atmosphärischer Gasbrenner nach Anspruch 1, dadurch gekennzeichnet, dass zwischen den Brennerelementen (10) ein Spalt (34) zur Zuführung von Sekundärluft ausgebildet ist und dass die Breite (X) des Spalts (34) 1/2 bis 1/5 der Tiefe (Y) des Brennerelements (10) beträgt.Atmospheric gas burner according to claim 1, characterized in that a gap (34) for supplying secondary air is formed between the burner elements (10) and that the width (X) of the gap (34) 1/2 to 1/5 of the depth (Y ) of the burner element (10). Atmosphärischer Gasbrenner nach Anspruch 1, dadurch gekennzeichnet, dass die Mischrohre (20) jeweils bezüglich der Breitseite des Brennerelements (10) einen sich erweiternden Diffusorabschnitt (25) aufweisen und dass der Diffusorabschnitt (25) bezüglich der Schmalseite des Brennerelements (10) einen den Querschnitt (20) verengenden Abschnitt (32, 36) aufweist.Atmospheric gas burner according to claim 1, characterized in that the mixing tubes (20) each have an expanding diffuser section (25) with respect to the broad side of the burner element (10) and that the diffuser section (25) has a cross section with respect to the narrow side of the burner element (10) (20) narrowing section (32, 36). Atmosphärischer Gasbrenner nach Anspruch 6, dadurch gekennzeichnet, dass an der Breitseite des Brennerelements (10) seitlich an dem verengenden Abschnitt (32, 36) jeweils zwei Diffusorkanäle (40) vorbeigeführt sind, wobei der Querschnitt der beiden Diffusorkanäle (40) größer ist als der Querschnitt des verengenden Abschnitts (32, 36) an einer beliebigen Stelle.Atmospheric gas burner according to claim 6, characterized in that on the broad side of the burner element (10) laterally past the narrowing portion (32, 36) two diffuser channels (40) are passed, the cross section of the two diffuser channels (40) being larger than that Cross section of the narrowing portion (32, 36) at any point. Atmosphärischer Gasbrenner nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass der verengende Abschnitt als Einschnürung (32) ausgebildet ist. Atmospheric gas burner according to claim 6 or 7, characterized in that the narrowing section is designed as a constriction (32). Atmosphärischer Gasbrenner nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass der verengende Abschnitt an der Schalseite des Brennerelements (10) als ein flacher Kanal (36) ausgebildet ist, der sich an der Breitseite in Strömungsrichtung des Brenngas-Luft-Gemischs deltaförmig erweitert.Atmospheric gas burner according to claim 6 or 7, characterized in that the narrowing section on the shell side of the burner element (10) is designed as a flat channel (36) which widens delta-shaped on the broad side in the flow direction of the fuel gas-air mixture.
EP20010102645 2000-03-04 2001-02-07 Atmospheric gas burner Expired - Lifetime EP1130315B1 (en)

Applications Claiming Priority (2)

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DE10010762 2000-03-04
DE2000110762 DE10010762C2 (en) 2000-03-04 2000-03-04 Atmospheric gas burner

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EP1130315A2 true EP1130315A2 (en) 2001-09-05
EP1130315A3 EP1130315A3 (en) 2001-09-19
EP1130315B1 EP1130315B1 (en) 2005-11-02

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EP20010102645 Expired - Lifetime EP1130315B1 (en) 2000-03-04 2001-02-07 Atmospheric gas burner

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CN (1) CN1311413A (en)
DE (2) DE10010762C2 (en)
ES (1) ES2252096T3 (en)

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Publication number Priority date Publication date Assignee Title
IT201800005589A1 (en) * 2018-05-22 2019-11-22 Modular burner
EP3597999A1 (en) * 2018-07-20 2020-01-22 Guangdong Vanward New Electric Co., Ltd. Gas water heater and burner thereof
CN111156507A (en) * 2019-12-23 2020-05-15 杨斌 Gas and air mix formula fire entirely and arrange combustor in advance
EP3825607A1 (en) * 2019-11-21 2021-05-26 Beckett Thermal Solutions S.R.L. Modular burner
IT202000008749A1 (en) * 2020-04-23 2021-10-23 Beckett Thermal Solutions S R L Improved Modular Burner
EP3795922A4 (en) * 2018-05-15 2022-04-27 Wuhu Midea Kitchen And Bath Appliances Mfg. Co, Ltd. Distributor and combustor and water heater having same
IT202100023330A1 (en) * 2021-09-09 2023-03-09 Polidoro S P A PLATE GAS BURNER WITH LOW EMISSION OF POLLUTANTS

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DE10215688A1 (en) * 2002-04-10 2003-11-06 Schott Glas Gas burner, especially for living flame fireplaces, contains pot shaped gas trap region to eliminate humming and buzzing sounds
CN104566372A (en) * 2015-01-13 2015-04-29 天津城建大学 Water cooled fully-areated burner
CN109404907A (en) * 2017-08-16 2019-03-01 芜湖美的厨卫电器制造有限公司 Burner and gas heater
CN110578920A (en) * 2018-06-08 2019-12-17 美的集团股份有限公司 Combustor and gas heater
CN109695875A (en) * 2019-01-02 2019-04-30 刘维 A kind of more injection tubular type fire pieces
GB2584675B (en) * 2019-06-10 2021-11-17 Edwards Ltd Inlet assembly for an abatement apparatus

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EP0769656A1 (en) 1995-10-19 1997-04-23 E.L.M. Leblanc Improvements in burners for water-heaters, bath-heathers or gas-fired boilers

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3795922A4 (en) * 2018-05-15 2022-04-27 Wuhu Midea Kitchen And Bath Appliances Mfg. Co, Ltd. Distributor and combustor and water heater having same
IT201800005589A1 (en) * 2018-05-22 2019-11-22 Modular burner
EP3597999A1 (en) * 2018-07-20 2020-01-22 Guangdong Vanward New Electric Co., Ltd. Gas water heater and burner thereof
EP3825607A1 (en) * 2019-11-21 2021-05-26 Beckett Thermal Solutions S.R.L. Modular burner
CN111156507A (en) * 2019-12-23 2020-05-15 杨斌 Gas and air mix formula fire entirely and arrange combustor in advance
IT202000008749A1 (en) * 2020-04-23 2021-10-23 Beckett Thermal Solutions S R L Improved Modular Burner
EP3901518A1 (en) * 2020-04-23 2021-10-27 Beckett Thermal Solutions S.R.L. Improved modular burner
IT202100023330A1 (en) * 2021-09-09 2023-03-09 Polidoro S P A PLATE GAS BURNER WITH LOW EMISSION OF POLLUTANTS
WO2023037277A1 (en) * 2021-09-09 2023-03-16 Polidoro S.P.A. Plate gas burner with low pollutant emission

Also Published As

Publication number Publication date
DE10010762A1 (en) 2001-09-20
EP1130315A3 (en) 2001-09-19
DE50107868D1 (en) 2005-12-08
DE10010762C2 (en) 2002-03-28
ES2252096T3 (en) 2006-05-16
EP1130315B1 (en) 2005-11-02
CN1311413A (en) 2001-09-05

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