EP0309838B1 - Gasburner - Google Patents
Gasburner Download PDFInfo
- Publication number
- EP0309838B1 EP0309838B1 EP88115256A EP88115256A EP0309838B1 EP 0309838 B1 EP0309838 B1 EP 0309838B1 EP 88115256 A EP88115256 A EP 88115256A EP 88115256 A EP88115256 A EP 88115256A EP 0309838 B1 EP0309838 B1 EP 0309838B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- burner
- restrictor
- wall
- transition piece
- gas burner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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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
- F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
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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
- F23D14/62—Mixing devices; Mixing tubes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/10—Flame diffusing means
- F23D2203/101—Flame diffusing means characterised by surface shape
- F23D2203/1012—Flame diffusing means characterised by surface shape tubular
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2210/00—Noise abatement
Definitions
- the invention relates to a blower-assisted, over-stoichiometric premixing gas burner with a partition wall arranged between a combustion chamber and a mixture chamber, which has passage openings for the mixture, and with a throttle arranged in the mixture path in front of the partition wall to prevent burner vibrations.
- Such a gas burner is known from EP-A-0 092 838.
- a burner plate is provided there as a partition.
- a piece of curved sheet metal is arranged upstream of this plate in the mixture channel in order to suppress burner vibrations by throttling action.
- this sheet alone is not yet fully satisfactory in terms of its effect.
- the invention is therefore based on the object of further developing a gas burner of the type mentioned in such a way that the throttle can fully meet its purpose.
- the throttle has at least one throttle opening, that the total cross section of the at least one throttle opening is 2 to 10%, preferably 2 to 5%, of the total cross section of the passage openings through the partition that the throttle is arranged at a distance of about 5 - 30 mm from the partition and that the at least one throttle opening is opposed by a baffle element downstream.
- This rule represents a sustainable remedial measure, since the throttle, which is located relatively close to the partition, causes a high pressure loss of the gas-air mixture conveyed with overpressure and thereby causes the vibration separation of the mixture chamber from the combustion chamber to an increased extent.
- the impact element effects a good mixture distribution, since the high mixture exit impulse is opposed to an obstacle, so that the mixture jets do not hit the through openings of the partition wall directly.
- the features according to the invention bring about reproducible suppression of burner vibrations practically over the entire air ratio and power range with any burner design. Whistling and howling tones completely disappear. There is also a significant improvement in the mixture distribution, so that corresponding distribution internals can be dispensed with. It is particularly advantageous that the pressure of conventional fans is sufficient for the gas burner to function properly and that after the fuel gas has been mixed with the air, enough pressure remains to be able to cope with the pressure loss caused by the throttling without problems.
- a particularly advantageous embodiment for use in gas boilers with a cylindrical combustion chamber is that the partition and the throttle are designed as cylindrical components which are held at one end by a mixer-side transition piece and are connected at their other end to a burner cover.
- One of the cylindrical components is firmly connected both to the transition piece and to the burner cover, while the other cylindrical component engages with at least one end in a longitudinally displaceable manner in a guide of the transition piece or the burner cover.
- the partition is to be provided with anti-kickback devices on both sides.
- fire-resistant soft seals can advantageously be inserted into the guides.
- the partition wall represents the cylindrical component which is firmly connected both to the transition piece and to the burner cap.
- the impact element can advantageously be arranged as a separate component between the throttle and the partition.
- the baffle element has passage openings which are arranged offset relative to the throttle openings of the throttle.
- the passage openings of the impact element have a total cross section of at least 30%, preferably 40 to 70% of the total cross section of the passage openings of the partition.
- At least one cylindrical component is advantageously provided as the impact element.
- baffle element which is designed as a cylindrical component, is held at one end by the transition piece and is connected at its other end to the burner cap, the baffle element having at least one end being longitudinally displaceable in a guide for the transition piece or the burner cap intervenes. In this way, damage caused by thermal stresses can also be avoided with this component.
- burner jacket itself is left to act as a baffle element by omitting the separate component by leaving unperforated sections on the burner jacket.
- a particularly simple and inexpensive construction of the gas burner is obtained if a cylindrical burner jacket with a thickness of preferably 0.5 to 1.3 mm is provided to form the partition, which is connected to the mixer with a rotationally symmetrical transition piece and is closed at its end by the burner cover is and is provided with the passage openings, which have a hydraulic diameter of 0.8 to 1.5 mm, in a hexagonal arrangement, wherein the cylindrical component has the throttle openings in rows of circles.
- numeral arrows illustrate the flow of an over-stoichiometric gas-air mixture, which enters the cylinder 1 with overpressure in the sense of the drawing, whose throttle openings 2 pass through, which are arranged in rows 3 above one another, and finally essentially radially exits through openings 4 of a cylindrical burner jacket 5 and burns there uniformly, as is partially shown in FIGS. 2, 4 and 6 with arrow heads.
- the cylinder 1 and the burner jacket 5 are closed at the top by a common burner cover 6.
- the passage openings 8 have a total cross section of at least 30%, preferably 40 to 70% of the total cross section of the passage openings 4, the partition 5.
- the impact element consists of a plurality of sheet metal cylinders 7a, which each cover a circular row 3 of the throttle openings 2 in a ring and are fastened to the cylinder 1 by spacers 9.
- FIGS. 5 and 6 are constructed similarly to the above-described embodiments.
- the throttling cylinder 1 is, however, provided at a distance of only 5 mm from the burner jacket 5 this time.
- the fuel gas flows through the gas nozzle 10 into a chamber 11 of a mixer 12 designed as a hole mixer.
- the combustion air is added to the chamber 11 with the aid of a blower (not shown).
- the mixture flows through bores 12a (only one shown) and a conically widening transition piece 13 into the cylinder 1, which is arranged within the burner jacket 5 in the sense of FIG. 5.
- the thickness of the burner jacket 5 is between 0.5 and 2 mm.
- the burner jacket 5 has the passage openings 4 in a hexagonal arrangement, the hydraulic diameter of which is 0.8 to 1.5 mm. The hexagonal arrangement of these openings results in a high degree of perforation and thus a low exit surface load with a high total surface load.
- Figure 8 differs from Figure 7 only in that the plate cylinder 7 serves as a baffle element and by the type of mounting of the three cylindrical elements 1, 5 and 7.
- the burner cap 6 and the transition piece 13 have guides 14 into which the burner jacket 5, the plate cylinder 7 and the cylinder 1 engage.
- the guides are shown on the burner cover side without the cylindrical elements 1 and 7 for better illustration.
- the burner jacket 5 is bolted to the burner cover 6 and the transition piece 13 in a non-return manner.
- the cylinder 1 and the sheet metal cylinder 7 are held in the guides 14 so as to be longitudinally displaceable.
- the burners shown in the drawings can be either hanging, depending on the intended use. H. with the burner cap facing down, as well as standing, d. H. with the burner cap facing upwards.
- the hanging installation method is particularly advantageous for gas boilers with flue gas condensation, since the condensate can drip off without affecting the burner.
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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
Description
Die Erfindung betrifft einen gebläseunterstützten, überstöchiometrisch vormischenden Gasbrenner mit einer zwischen einem Brennraum und einem Gemischraum angeordneten Trennwand, die Durchtrittsöffnungen für das Gemisch aufweist, und mit einer im Gemischweg vor der Trennwand zur Verhinderung von Brennerschwingungen angeordneten Drossel.The invention relates to a blower-assisted, over-stoichiometric premixing gas burner with a partition wall arranged between a combustion chamber and a mixture chamber, which has passage openings for the mixture, and with a throttle arranged in the mixture path in front of the partition wall to prevent burner vibrations.
Ein derartiger Gasbrenner ist aus der EP-A-0 092 838 bekannt. Dort ist als Trennwand eine Brennerplatte vorgesehen. Stromauf dieser Platte ist ein Stück gekrümmtes Blech in dem Gemischkanal angeordnet, um Brennerschwingungen durch Drosselwirkung zu unterdrücken. Das Vorsehen dieses Bleches allein ist allerdings von der Wirkung her noch nicht voll befriedigend.Such a gas burner is known from EP-A-0 092 838. A burner plate is provided there as a partition. A piece of curved sheet metal is arranged upstream of this plate in the mixture channel in order to suppress burner vibrations by throttling action. However, the provision of this sheet alone is not yet fully satisfactory in terms of its effect.
Der Erfindung liegt daher die Aufgabe zugrunde, einen Gasbrenner der eingangs genannten Art derart weiterzuentwickeln, daß die Drossel ihrer Bestimmung voll gerecht werden kann.The invention is therefore based on the object of further developing a gas burner of the type mentioned in such a way that the throttle can fully meet its purpose.
Die Lösung dieser Aufgabe besteht nach langwierigen Untersuchungen über Ursache und Beseitigung der aufgetretenen Brennerschwingungen darin, daß die Drossel mindestens eine Drosselöffnung aufweist, daß der Gesamtquerschnitt der mindestens einen Drosselöffnung 2 bis 10 %, vorzugsweise 2 bis 5 % des Gesamtquerschnittes der Durchtrittsöffnungen durch die Trennwand beträgt, daß die Drossel in einem Abstand von ca. 5 - 30 mm zur Trennwand angeordnet ist und daß der mindestens einen Drosselöffnung stromab ein Prallelement gegenübersteht.The solution to this problem after lengthy investigations into the cause and elimination of the burner vibrations that have occurred is that the throttle has at least one throttle opening, that the total cross section of the at least one throttle opening is 2 to 10%, preferably 2 to 5%, of the total cross section of the passage openings through the partition that the throttle is arranged at a distance of about 5 - 30 mm from the partition and that the at least one throttle opening is opposed by a baffle element downstream.
Diese Regel stellt eine nachhaltige Abhilfemaßnahme dar, indem die relativ dicht vor der Trennwand angeordnete Drossel einen hohen Druckverlust des mit Überdruck geförderten Gas-Luftgemisches hervorruft und dadurch die schwingungsmäßige Trennung des Gemischraumes vom Brennraum in verstärktem Maße bewirkt. Das Prallelement bewirkt eine gute Gemischverteilung,da dem hohen Gemisch-Austrittsimpuls ein Hinderniss entgegensetzt ist, so daß die Gemischstrahlen nicht unmittelbar auf die Durchtrittsöffnungen der Trennwand treffen.This rule represents a sustainable remedial measure, since the throttle, which is located relatively close to the partition, causes a high pressure loss of the gas-air mixture conveyed with overpressure and thereby causes the vibration separation of the mixture chamber from the combustion chamber to an increased extent. The impact element effects a good mixture distribution, since the high mixture exit impulse is opposed to an obstacle, so that the mixture jets do not hit the through openings of the partition wall directly.
Überraschenderweise bewirken die erfindungsgemäßen Merkmale, die inzwischen mit Erfolg erprobt wurden, die reproduzierbare Unterdrückung der Brennerschwingungen praktisch über den gesamten Luftzahl- und Leistungsbereich bei beliebiger Brennerkonstruktion. Pfeiff- und Heultöne verschwinden dabei gänzlich. Auch eine deutliche Verbesserung der Gemischverteilung tritt ein, so daß auf entsprechende Verteileinbauten verzichtet werden kann. Besonders vorteilhaft ist, daß die Pressung üblicher Gebläse für eine einwandfreie Funktion des Gasbrenners voll ausreicht und somit nach erfolgter Mischung des Brenngases mit der Luft noch genug Druck übrig bleibt, um den durch die Drosselung hervorgerufenen Druckverlust störungsfrei verkraften zu können.Surprisingly, the features according to the invention, which have been successfully tested in the meantime, bring about reproducible suppression of burner vibrations practically over the entire air ratio and power range with any burner design. Whistling and howling tones completely disappear. There is also a significant improvement in the mixture distribution, so that corresponding distribution internals can be dispensed with. It is particularly advantageous that the pressure of conventional fans is sufficient for the gas burner to function properly and that after the fuel gas has been mixed with the air, enough pressure remains to be able to cope with the pressure loss caused by the throttling without problems.
Eine besonders vorteilhafte Ausführungsform für die Verwendung in Gasheizkesseln mit zylindrischer Brennkammer besteht darin, daß die Trennwand und die Drossel als zylindrische Bauteile ausgebildet sind, die an ihrem einen Ende von einem mischerseitigen Übergangsstück gehalten werden und an ihrem anderen Ende an einen Brennerdeckel angeschlossen sind. Eines der zylindrischen Bauteile ist sowohl mit dem Übergangsstück als auch mit dem Brennerdeckel fest verbunden, während das andere zylindrische Bauteil mit mindestens einem Ende längsverschieblich in eine Führung des Übergangsstücks bzw. des Brennerdeckels eingreift. Durch diese Anordnung können sich die Bauteile bei den vorkommenden starken Temperatur-Wechselbeanspruchungen ungehindert ausdehnen. Dadurch werden Schäden durch Wärmespannungen vermieden.A particularly advantageous embodiment for use in gas boilers with a cylindrical combustion chamber is that the partition and the throttle are designed as cylindrical components which are held at one end by a mixer-side transition piece and are connected at their other end to a burner cover. One of the cylindrical components is firmly connected both to the transition piece and to the burner cover, while the other cylindrical component engages with at least one end in a longitudinally displaceable manner in a guide of the transition piece or the burner cover. This arrangement allows the components to expand unhindered in the event of strong temperature changes. This prevents damage caused by thermal stress.
Die Trennwand ist beidseitig mit Rückschlagsicherungen zu versehen. Hierzu können vorteilhafterweise feuerbeständige weiche Dichtungen in die Führungen eingelegt werden.The partition is to be provided with anti-kickback devices on both sides. For this purpose, fire-resistant soft seals can advantageously be inserted into the guides.
Besonders vorteilhaft ist es, wenn die Trennwand dasjenige zylindrische Bauteil darstellt, welches sowohl mit dem Übergangsstück als auch mit dem Brennerdeckel fest verbunden ist.It is particularly advantageous if the partition wall represents the cylindrical component which is firmly connected both to the transition piece and to the burner cap.
Das Prallelement kann vorteilhafterweise als gesondertes Bauteil zwischen der Drossel und der Trennwand angeordnet sein.The impact element can advantageously be arranged as a separate component between the throttle and the partition.
Erfindungsgemäß weist das Prallelement dabei Durchlaßöffnungen auf, die relativ zu den Drosselöffnungen der Drossel versetzt angeordnet sind.According to the invention, the baffle element has passage openings which are arranged offset relative to the throttle openings of the throttle.
Versuche haben gezeigt, daß es besonders günstig ist, wenn die Durchlaßöffnungen des Prallelements einen Gesamtquerschnitt von mindestens 30 %, vorzugsweise 40 bis 70 % des Gesamtquerschnitts der Durchtrittsöffnungen der Trennwand aufweisen.Tests have shown that it is particularly advantageous if the passage openings of the impact element have a total cross section of at least 30%, preferably 40 to 70% of the total cross section of the passage openings of the partition.
Vorteilhafterweise ist als Prallelement mindestens ein zylindrisches Bauteil vorgesehen.At least one cylindrical component is advantageously provided as the impact element.
Eine bevorzugte Ausführungsform besteht darin, daß das als zylindrisches Bauteil ausgebildete Prallelement an seinem einen Ende von dem Übergangsstück gehalten wird und an seinem anderen Ende an den Brennerdeckel angeschlossen ist, wobei das Prallelement mit mindestens einem Ende längsverschieblich in eine Führung des Übergangsstücks bzw. des Brennerdeckels eingreift. Auf diese Weise werden auch bei diesem Bauteil Schäden durch Wärmespannungen vermieden.A preferred embodiment is that the baffle element, which is designed as a cylindrical component, is held at one end by the transition piece and is connected at its other end to the burner cap, the baffle element having at least one end being longitudinally displaceable in a guide for the transition piece or the burner cap intervenes. In this way, damage caused by thermal stresses can also be avoided with this component.
Eine Alternativausführung besteht darin, daß man unter Weglassung des gesonderten Bauteils als Prallelement den Brennermantel selbst wirken läßt, indem man ungelochte Abschnitte an dem Brennermantel bestehen läßt.An alternative embodiment is that the burner jacket itself is left to act as a baffle element by omitting the separate component by leaving unperforated sections on the burner jacket.
Ein besonders einfacher und kostengünstiger Aufbau des Gasbrenners ergibt sich, wenn zur Bildung der Trennwand ein zylindrischer Brennermantel mit vorzugsweise 0,5 bis 1,3 mm Stärke vorgesehen ist, der sich an den Mischer mit einem rotationssymmetrischen Übergangsstück anschließt, an seinem Ende vom Brennerdeckel verschlossen ist und mit den Durchtrittsöffnungen, die einen hydraulischen Durchmesser von 0,8 bis 1,5 mm aufweisen, in Hexagonalanordnung versehen ist, wobei das zylindrische Bauteil die Drosselöffnungen in Kreisreihen aufweist.A particularly simple and inexpensive construction of the gas burner is obtained if a cylindrical burner jacket with a thickness of preferably 0.5 to 1.3 mm is provided to form the partition, which is connected to the mixer with a rotationally symmetrical transition piece and is closed at its end by the burner cover is and is provided with the passage openings, which have a hydraulic diameter of 0.8 to 1.5 mm, in a hexagonal arrangement, wherein the cylindrical component has the throttle openings in rows of circles.
Im folgenden wird die Erfindung anhand von in den Zeichnungen schematisch dargestellten Ausführungsbeispielen erläutert.The invention is explained below with reference to exemplary embodiments schematically illustrated in the drawings.
Es zeigen
Figur 1- einen zylindrischen Gasbrenner im Schnitt durch die Zylinderachse,
Figur 2- einen Schnitt nach der Linie II-II der
Figur 1, Figur 3- eine weitere Ausführungsform des zylindrischen Gasbrenners im der
Figur 1 entsprechenden Schnitt, Figur 4- einen Schnitt nach der Linie IV-IV der
Figur 3, Figur 5- eine dritte Ausführungsform des zylindrischen Gasbrenners im der
Figur 1 entsprechenden Schnitt, Figur 6- einen Schnitt nach der Linie VI-VI der
Figur 5 und Figur 7- eine vierte Ausführungsform des zylindrischen Gasbrenners im der
Figur 1 entsprechenden Schnitt. - Figur 8
- eine fünfte Ausführungsform des zylindrischen Gasbrenners in der
Figur 3 entsprechendem Schnitt.
- Figure 1
- a cylindrical gas burner in section through the cylinder axis,
- Figure 2
- 2 shows a section along the line II-II of FIG. 1,
- Figure 3
- 1 shows another embodiment of the cylindrical gas burner in the section corresponding to FIG. 1,
- Figure 4
- 4 shows a section along the line IV-IV in FIG. 3,
- Figure 5
- 4 shows a third embodiment of the cylindrical gas burner in the section corresponding to FIG. 1,
- Figure 6
- a section along the line VI-VI of Figure 5 and
- Figure 7
- a fourth embodiment of the cylindrical gas burner in the section corresponding to Figure 1.
- Figure 8
- a fifth embodiment of the cylindrical gas burner in the corresponding section in Figure 3.
In den Figuren 1 bis 6 verdeutlichen zifferlose Pfeile den Strömungsverlauf eines überstöchiometrischen Gas-Luftgemisches, das mit Überdruck im Sinne der Zeichnung von unten in einen Zylinder 1 eintritt, dessen Drosselöffnungen 2 durchsetzt, die in Kreisreihen 3 übereinander angeordnet sind, und zuletzt im wesentlichen radial aus Durchtrittsöffnungen 4 eines zylindrischen Brennermantels 5 austritt und dort gleichmäßig verbrennt, wie dies teilweise in den Figuren 2, 4 und 6 mit Pfeilköpfen dargestellt ist. Der Zylinder 1 und der Brennermantel 5 sind oben durch einen gemeinsamen Brennerdeckel 6 abgeschlossen.In Figures 1 to 6, numeral arrows illustrate the flow of an over-stoichiometric gas-air mixture, which enters the
In den Figuren 1 bis 4 ist eine derartige Anordnung getroffen, daß der drosselnde Zylinder 1 einen koaxialen Abstand bis zu 30 mm von dem Brennermantel 5 hält und der Gesamtquerschnitt der Drosselöffnungen 2 2 bis 10 %, vorzugsweise 2 bis 5 %, von dem Gesamtquerschnitt der Durchtrittsöffnungen 4 ausmacht, um Brennerschwingungen vorzubeugen. Damit die Gemischstrahlen in ihren Impulsen gehemmt werden, die sie bei der hochgradigen Drosselung erhalten, ist zwischen dem Zylinder 1 und dem Brennermantel 5 ein Prallelement vorgesehen. Dieses besteht nach den Figuren 3 und 4 aus einem einzigen, an den Enden abgefangenen Blechzylinder 7 mit Durchlaßöffnungen 8, die sowohl in der Höhe als auch in der Umfangsrichtung versetzt zu den Drosselöffnungen 2 angeordnet sind. Die Durchlaßöffnungen 8 weisen einen Gesamtquerschnitt von mindestens 30 %, vorzugsweise 40 bis 70 % des Gesamtquerschnitts der Durchtrittsöffnungen 4, der Trennwand 5 auf. Nach den Figuren 1 und 2 besteht das Prallelement aus mehreren Blechzylindern 7a, die ringförmig jeweils eine Kreisreihe 3 der Drosselöffnungen 2 abdecken und durch Abstandshalter 9 an dem Zylinder 1 befestigt sind.In Figures 1 to 4 such an arrangement is made that the throttling
Zur Vorbeugung von Brennerschwingungen ist die Konstruktion nach den Figuren 5 und 6 ähnlich aufgebaut wie die vorbeschriebenen Ausführungen. Der drosselnde Zylinder 1 ist allerdings diesmal in einem Abstand von nur 5 mm von dem Brennermantel 5 vorgesehen. Als Prallelement dienen ungelochte senkrechte Abschnitte 7b des Brennermantels 5, die den übereinanderliegenden Drosselöffnungen 2 gegenüberstehen.To prevent burner vibrations, the construction according to FIGS. 5 and 6 is constructed similarly to the above-described embodiments. The
Entsprechend den Figuren 7 und 8 strömt das Brenngas durch die Gasdüse 10 in eine Kammer 11 eines als Lochmischer ausgebildeten Mischers 12. Die Verbrennungsluft wird mit Hilfe eines nicht dargestellten Gebläses der Kammer 11 zugefügt. Das Gemisch strömt durch Bohrungen 12a (nur eine dargestellt) und ein sich konisch erweiterndes Übergangsstück 13 in den Zylinder 1, der innerhalb des Brennermantels 5 im Sinne der Figur 5 angeordnet ist. Die Stärke des Brennermantels 5 liegt zwischen 0,5 und 2 mm. Der Brennermantel 5 weist die Durchtrittsöffnungen 4 in Hexagonalanordnung auf, deren hydraulischer Durchmesser 0,8 bis 1,5 mm beträgt. Durch die hexagonale Anordnung dieser Öffnungen wird ein hoher Perforationsgrad und damit eine niedrige Austrittsflächenbelastung bei hoher Gesamtflächenbelastung erreicht.According to FIGS. 7 and 8, the fuel gas flows through the
Figur 8 unterscheidet sich von Figur 7 nur dadurch, daß als Prallelement der Blechzylinder 7 dient und durch die Art der Halterung der drei zylindrischen Elemente 1, 5 und 7. Der Brennerdeckel 6 bzw. das Übergangsstück 13 weisen Führungen 14 auf, in die der Brennermantel 5, der Blechzylinder 7 und der Zylinder 1 eingreifen. Die Führungen sind zur besseren Darstellung brennerdeckelseitig ohne die zylindrischen Elemente 1 und 7 dargestellt. Der Brennermantel 5 ist mit dem Brennerdeckel 6 und dem Übergangsstück 13 rückschlagsicher verschraubt. Der Zylinder 1 und der Blechzylinder 7 werden längsverschieblich in den Führungen 14 gehalten.Figure 8 differs from Figure 7 only in that the
Die in den Zeichnungen dargestellten Brenner können je nach Verwendungszweck sowohl hängend, d. h. mit dem Brennerdeckel nach unten weisend, als auch stehend, d. h. mit dem Brennerdeckel nach oben weisend, eingebaut werden.The burners shown in the drawings can be either hanging, depending on the intended use. H. with the burner cap facing down, as well as standing, d. H. with the burner cap facing upwards.
Die hängende Einbauweise ist besonders vorteilhaft für Gasheizkessel mit Abgaskondensation, da das Kondensat abtropfen kann, ohne dabei den Brenner zu tangieren.The hanging installation method is particularly advantageous for gas boilers with flue gas condensation, since the condensate can drip off without affecting the burner.
Claims (10)
- A fan-assisted premixed fuel-lean gas burner provided with a wall (5) arranged between a combustion space and a mixing space, said wall having passages (4) allowing the mixture to pass therethrough and further provided with a restrictor (1) arranged in the mixture carrying passage upstream from said wall with the objective of preventing burner vibrations, characterized in that said restrictor (1) comprises at least one restrictor opening (2), the total cross sectional area of said at least one restrictor opening (2) is between 2 and 10 % and preferably between 2 and 5 % of the total cross sectional area of said passages (4) in said wall (5), said restrictor (1) is spaced relative to said wall (5) at a distance of approximately 5 to 30 mm and said at least one restrictor opening (2) is associated with a downstream baffle means (7, 7a, 7b).
- A gas burner according to claim 1 characterized in that said wall (5) and said restrictor (1) are cylindrical, each being held at one of its ends by a transition piece (13) to said mixing space and coupled at its other end with a burner cap (6), one of said cylindrical parts (1 or 5) being permanently connected with both said transition piece (13) and said burner cap (6) and the other cylindrical part (1 or 5) engaging at at least one of its ends in a longitudinally displaceable manner in guide means (14) of said transition piece (13) and/or said burner cap (6).
- A gas burner according to claim 2 characterized in that said wall (5) is said cylindrical part firmly connected with both said transition piece (13) and said burner cap (6).
- A gas burner according to any one of claims 1 through 3 characterized in that said baffle means is a separate part arranged between said restrictor (1) and said wall (5).
- A gas burner according to claim 4 characterized in that said baffle means (7) is provided with passages (8) displaced relative to said restrictor openings (2) of said restrictor (1).
- A gas burner according to claim 5 characterized in that the total cross sectional area of said passages (8) is at least 30 % and preferably between 40 and 70 % of the total cross sectional area of the passages (4) provided in said wall (5).
- A gas burner according to any one of claims 4 through 6 characterized in that said baffle means is at least one cylindrical part (7, 7a).
- A gas burner according to claim 7 characterized in that said cylindrical part (7) provided as baffle means is held at its end by said transition piece (13) and coupled at its other end with said burner cap (6), at least one end of said baffle means engaging in a longitudinally displaceable manner in guide means (14) provided on said transition piece (13) and/or said burner cap (6).
- A gas burner according to any one of claims 1 through 3 characterized in that said baffle means is an unperforated part (7b) of said wall (5).
- A gas burner according to anyone of claims 1 through 9 characterized in that a cylindrical burner jacket (5) of a thickness between 0.5 and 2.0 mm and preferably between 0.5 and 1.3 mm serves to form said wall, said burner jacket being located adjacent to said mixing space (12) with a transition piece (13) symmetric about a rotation axis being arranged therebetween, one end of said jacket is closed by said burner cap (6) and said jacket is provided with passages (4) with diameters of between 0.8 and 1.5 mm arranged in a hexagonal configuration, a cylinder (1) provided with restrictor openings (2) in a circular configuration (3) arranged inside said burner jacket between said transition piece and said burner cap serving as a restrictor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT88115256T ATE73217T1 (en) | 1987-09-26 | 1988-09-17 | GAS BURNER. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3732482 | 1987-09-26 | ||
| DE3732482 | 1987-09-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0309838A1 EP0309838A1 (en) | 1989-04-05 |
| EP0309838B1 true EP0309838B1 (en) | 1992-03-04 |
Family
ID=6336952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88115256A Expired - Lifetime EP0309838B1 (en) | 1987-09-26 | 1988-09-17 | Gasburner |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4960378A (en) |
| EP (1) | EP0309838B1 (en) |
| AT (1) | ATE73217T1 (en) |
| CA (1) | CA1303958C (en) |
| DE (1) | DE3868815D1 (en) |
Families Citing this family (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2005415C (en) * | 1989-01-10 | 1994-03-01 | Willie H. Best | High efficiency gas burner assembly |
| US5203689A (en) * | 1990-10-15 | 1993-04-20 | The Marley Company | Premix boiler construction |
| GB2257928B (en) * | 1991-06-09 | 1995-05-31 | Braun Ag | Heatable appliance for personal use |
| DE4129711C2 (en) * | 1991-09-06 | 1993-09-30 | Buderus Heiztechnik Gmbh | Gas burner with a fuel element made of a porous body |
| DE9201313U1 (en) * | 1992-02-04 | 1992-03-26 | Hoval Interliz Ag, Vaduz-Neugut | Burner cylinders for premixing fan burners of gas heaters |
| DE69503581T2 (en) * | 1994-08-26 | 1999-01-14 | Caradon Ideal Ltd | Gas burner |
| AU710622B2 (en) * | 1995-11-13 | 1999-09-23 | Gas Research Institute, Inc. | Flame ionization control apparatus and method |
| FR2750412B1 (en) * | 1996-06-28 | 1998-08-14 | Lorraine Carbone | PROCESS FOR PRODUCING GAS HYDROGEN BROMIDE AND DEVICE FOR IMPLEMENTING SAME |
| US5704777A (en) * | 1996-07-30 | 1998-01-06 | Dutro Company | Outdoor gas burner |
| NL1005494C2 (en) * | 1997-03-11 | 1998-09-14 | Fasto Nefit Bv | Gas burner. |
| FR2772368B1 (en) | 1997-12-12 | 2002-06-14 | Atochem Elf Sa | PROCESS FOR PRODUCING PURE GAS HYDROGEN BROMIDE AND DEVICE FOR CARRYING OUT SAME |
| DE19831933C1 (en) * | 1998-07-16 | 2000-01-27 | Viessmann Werke Kg | Process and burner for avoiding thermoacoustic flame or pressure vibrations in furnaces operated with fan-assisted burners |
| US6162049A (en) * | 1999-03-05 | 2000-12-19 | Gas Research Institute | Premixed ionization modulated extendable burner |
| DE19934612A1 (en) * | 1999-07-23 | 2001-01-25 | Abb Alstom Power Ch Ag | Method for actively suppressing fluid mechanical instabilities in a combustion system and combustion system for carrying out the method |
| US6146132A (en) * | 1999-08-14 | 2000-11-14 | Harneit; Uwe | Gas burner for outdoor cooking |
| AT409537B (en) * | 1999-09-24 | 2002-09-25 | Vaillant Gmbh | CLOSED COMBUSTION SYSTEM |
| US6299433B1 (en) | 1999-11-05 | 2001-10-09 | Gas Research Institute | Burner control |
| CH694972A5 (en) * | 2004-10-22 | 2005-10-14 | Toby Ag | Burner is for liquid fuel has fuel evaporated or atomized and then mixed with air prior to being fed to interior of cylindrical flame holder |
| US7241135B2 (en) * | 2004-11-18 | 2007-07-10 | Honeywell International Inc. | Feedback control for modulating gas burner |
| EP1840460A1 (en) * | 2006-03-29 | 2007-10-03 | Aeromatix Limited | Gas burner |
| EP1840461A1 (en) * | 2006-03-29 | 2007-10-03 | Aeromatix Limited | End cap for a gas burner |
| ITMI20071751A1 (en) | 2007-09-12 | 2009-03-13 | Polidoro S P A | PREMIXED BURNER |
| ITPD20070388A1 (en) * | 2007-11-19 | 2009-05-20 | Sit La Precisa S P A Con Socio | BURNER, IN PARTICULAR GAS BURNER WITH PRE-MIXING |
| CN201259252Y (en) * | 2008-08-18 | 2009-06-17 | 何梅顺 | Jet type gas range |
| IT1399919B1 (en) * | 2010-05-05 | 2013-05-09 | Worgas Bruciatori Srl | GAS BURNER FOR BOILER |
| IT1402900B1 (en) * | 2010-11-24 | 2013-09-27 | Worgas Bruciatori Srl | BURNER WITH HIGH STABILITY |
| ITMI20110390A1 (en) * | 2011-03-11 | 2012-09-12 | Bertelli & Partners Srl | GAS BURNER PERFECTED FOR PREMIXED COMBUSTION |
| ITVI20110181A1 (en) * | 2011-07-05 | 2013-01-06 | Aldo Polidoro | FUEL GAS BURNER |
| GB2511029A (en) * | 2012-12-19 | 2014-08-27 | Worgas Burners Ltd | Gas burner |
| US20160258619A1 (en) * | 2015-03-03 | 2016-09-08 | Willie H. Best | Multiple plenum gas burner |
| US10767900B2 (en) * | 2015-05-14 | 2020-09-08 | Lochinvar, Llc | Burner with flow distribution member |
| RU2639823C1 (en) * | 2017-04-03 | 2017-12-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тихоокеанский государственный университет" | Two-flow gas burner |
| RU183750U1 (en) * | 2017-12-25 | 2018-10-02 | Общество с ограниченной ответственностью "ИнвестГрупп" | Pre-mix gas burner |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190221654A (en) * | 1902-10-04 | 1903-08-27 | Georges Imbert | Improvements in Heating and Lighting Apparatus |
| US3291187A (en) * | 1964-03-02 | 1966-12-13 | Universal Oil Prod Co | Catalytic methane burner for producing infra-red heat |
| DE1529197B1 (en) * | 1966-04-06 | 1970-04-30 | Kurt Krieger | Radiant burner |
| US3489134A (en) * | 1967-11-14 | 1970-01-13 | Edwin J Cowan | High efficiency gas infrared heater |
| ES195007Y (en) * | 1970-01-13 | 1975-07-01 | Raytheon Co. | ONE MULTIPLE HOLE BURNING DEVICE. |
| FR2126054A1 (en) * | 1971-02-22 | 1972-10-06 | Gavreau Vladimir | SILENT MOLECULAR COMBUSTION BURNERS |
| US3736095A (en) * | 1971-03-08 | 1973-05-29 | Fuel Equipment Co | Gas-fired blast type burner |
| FR2190249A5 (en) * | 1972-06-22 | 1974-01-25 | Utilisation Ration Gaz | |
| US3852025A (en) * | 1973-09-28 | 1974-12-03 | Int Magna Corp | Infra-red heater |
| US3975140A (en) * | 1974-08-28 | 1976-08-17 | International Magna Corporation | Space heater |
| FR2321663A1 (en) * | 1975-08-20 | 1977-03-18 | Vidalenq Maurice | Forced draught gas burner - has three perforated concentric cylinders receiving mixt. from fan |
| DE3039982A1 (en) * | 1980-10-23 | 1982-05-27 | Ruhrgas Ag, 4300 Essen | COOKING POINT FOR GAS COOKERS |
| DE3371118D1 (en) * | 1982-04-28 | 1987-05-27 | Ruhrgas Ag | Gas-fired water heating apparatus |
| GB2176588B (en) * | 1985-06-13 | 1989-02-08 | British Gas Plc | Fuel fired burner |
| DE8605654U1 (en) * | 1986-03-01 | 1987-07-02 | Ruhrgas Ag, 4300 Essen | Burners for gaseous fuels |
-
1988
- 1988-09-17 AT AT88115256T patent/ATE73217T1/en not_active IP Right Cessation
- 1988-09-17 EP EP88115256A patent/EP0309838B1/en not_active Expired - Lifetime
- 1988-09-17 DE DE8888115256T patent/DE3868815D1/en not_active Expired - Fee Related
- 1988-09-23 US US07/248,531 patent/US4960378A/en not_active Expired - Fee Related
- 1988-09-26 CA CA000578455A patent/CA1303958C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0309838A1 (en) | 1989-04-05 |
| US4960378A (en) | 1990-10-02 |
| CA1303958C (en) | 1992-06-23 |
| DE3868815D1 (en) | 1992-04-09 |
| ATE73217T1 (en) | 1992-03-15 |
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