EP0896191B1 - Fuel gas admission device for a premix burner - Google Patents
Fuel gas admission device for a premix burner Download PDFInfo
- Publication number
- EP0896191B1 EP0896191B1 EP98112693A EP98112693A EP0896191B1 EP 0896191 B1 EP0896191 B1 EP 0896191B1 EP 98112693 A EP98112693 A EP 98112693A EP 98112693 A EP98112693 A EP 98112693A EP 0896191 B1 EP0896191 B1 EP 0896191B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- swirl
- fuel gas
- inflow
- admission device
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L5/00—Blast-producing apparatus before the fire
Definitions
- the invention relates to a device for initiating Fuel gas in an air stream, especially for a gas premix burner, with an inflow chamber for the air, with a leading into the inflow chamber for the Fuel gas and with a (first) swirl generating device, by means of the air flowing through the inflow chamber Swirl is impressed, the inflow opening in the Axis of the (first) swirl generating device is arranged.
- Such a device is for example by DE 33 45 611 A1 has become known.
- Introductory devices are also known in which the fuel gas metering after a pressure loss Throttle point is aimed.
- the so-called “mechanical gas-air network” in order to change the performance, the flow cross-sections of air and fuel gas alike.
- the so-called “Pneumatic compound” is the pressure of one fluid the pressure loss at the throttle point changed to the to achieve the same mixing ratio.
- the so-called “Zero pressure control” is the pressure loss of the throttle point in the one fluid stream chosen approximately the same as the pressure loss of the throttle point in the other fluid flow, which makes the mixing ratio independent of the throughput becomes.
- the usable performance range is also here small because of precise pressure control with small pressure differences is very difficult.
- the present invention has the object based on an introductory device of the aforementioned Art in such a way that even better metering accuracy can be achieved.
- this object is achieved by a further one (Second) swirl generating device, which through the inflow opening flowing fuel gas or one through the inflow opening already flowing mixture of air and fuel gas imbues a twist.
- the further swirl generating device which by the inflow fuel gas flowing through the Inflow opening flowing mixture of air and fuel gas Swirl imprints can already be upstream of the inflow opening a swirl is imparted to the fuel gas or the mixture be the downstream swirl of air reinforced.
- This is preferably a further swirl generating device upstream of the inflow opening for generation of a swirl only in the air of through the Inflow opening flowing mixture arranged.
- the inflow opening is designed as a Venturi nozzle.
- Fuel gas Due to the swirl of the rotating air flow is in the Inflow center arranged for the center of the swirl Fuel gas generates a high negative pressure, which regulates the pressure of the fuel gas to be introduced is significantly simplified and thus increasing the metering accuracy. This can already with a low pressure drop in the air a precise, adjustable Mixing ratio with the fuel gas in one large performance range can be achieved.
- the generation of the Swirls in the air also have the advantage that the flow with changes of direction not so easily detachment shows and thereby space is saved can.
- the swirl generating device preferably has at least one, in particular several evenly distributed around its circumference swirl-generating guide vanes.
- Via adjustable Guide blades can also be the metering of Fuel gas or the mixing ratio between air and Influence fuel gas particularly easily.
- Swirl generating device designed as a cyclone. It turns out turns out to be advantageous, a larger amount of fuel gas to flow in the center of the cyclone to avoid flow losses to reduce.
- a radial fan is arranged downstream of the inflow chamber.
- the twist of the mixture flowing out of the inflow chamber can be used for inflow of the radial fan can be used advantageously.
- Counter-swirl flow can be a particularly high fan output can be achieved while a constant swirl flow particularly low-loss entry of the mixture into the radial fan is possible.
- FIG. 1 10 'shows an introduction device for a gas premix burner (not shown) in which air 11, 11' and fuel gas 12 are mixed together and then fed to the gas premix burner as a mixture 13 .
- the air 11 is sucked in via a peripheral opening 17 into an inflow chamber 18 via a radial fan 14 , which is driven by the motor 15 in the direction of rotation 16 .
- guide vanes 19 (FIG. 2) are arranged, which form a cyclone and which impart a swirl 20 to the air 11 flowing through the inflow chamber 18, as is also indicated by the flow arrows 21 in FIG. 2.
- an inflow opening 23 ' in the form of a Venturi nozzle 29 is provided, through which the fuel gas 12 and further air 11' are jointly introduced into the inflow chamber 18 in the direction of the axis of rotation 22.
- the air 11 ' is sucked in via the radial fan 14 via an air duct 31 and into the Venturi nozzle 29, the air 11' entraining the fuel gas 12 via a nozzle-shaped inflow opening 32 arranged in the region of the axis of rotation 22.
- a swirl 34 is impressed on the air 11 'upstream of the inflow opening 23' via guide plates 33 (FIG.
- the mixture 25 of air 11, 11 'and fuel gas 12 in the radial fan 14 flows radially outward into an outer flow channel 24 and then out via an outlet opening 26 in the direction of the gas premix burner.
- the swirl 35 and the direction of rotation 16 of the radial blower 14 are directed in the same direction, whereby a particularly low-loss entry of the mixture into the radial blower 14 is possible if the impeller 27 of the radial blower 14 is equipped with corresponding guide vanes 28 .
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Einleiten von Brenngas in einen Luftstrom, insbesondere für einen Gas-Vormischbrenner, mit einer Einströmkammer für die Luft, mit einer in die Einströmkammer führenden Einströmöffnung für das Brenngas und mit einer (ersten) Drallerzeugungseinrichtung, mittels der der durch die Einströmkammer strömenden Luft ein Drall aufgeprägt wird, wobei die Einströmöffnung in der Achse der (ersten) Drallerzeugungsvorrichtung angeordnet ist. The invention relates to a device for initiating Fuel gas in an air stream, especially for a gas premix burner, with an inflow chamber for the air, with a leading into the inflow chamber for the Fuel gas and with a (first) swirl generating device, by means of the air flowing through the inflow chamber Swirl is impressed, the inflow opening in the Axis of the (first) swirl generating device is arranged.
Eine derartige Vorrichtung ist beispielsweise durch die DE 33 45 611 A1 bekanntgeworden.Such a device is for example by DE 33 45 611 A1 has become known.
Beim sogenannten "atmosphärischen Brenner" reißt die durch eine Einströmkammer strömende Luft nach dem Strahlpumpenprinzip eine entsprechende Menge Brenngas mit. Entsprechend der Strömungsgeschwindigkeit der Luft bzw. des in der Einströmkammer herrschenden Luftdruckes wird mehr oder weniger Brenngas zugemessen, wobei allerdings erhebliche Ungenauigkeiten auftreten können.In the so-called "atmospheric burner" it breaks through an inflow chamber flowing air according to the jet pump principle a corresponding amount of fuel gas. Corresponding the flow velocity of the air or that in the inflow chamber prevailing air pressure becomes more or less Fuel gas metered, although considerable inaccuracies may occur.
Weiterhin sind Einleitungsvorrichtungen bekannt, bei denen sich die Brenngas-Zumessung nach dem Druckverlust an einer Drosselstelle richtet. Beim sogenannten "mechanischen Gas-Luftverbund" werden, um die Leistung zu verändern, die Strömungsquerschnitte von Luft und Brenngas gleichermaßen verändert. Dies erfordert allerdings einen großen technischen Aufwand. Um die Leistung zu verändern, wird beim sogenannten "pneumatischen Verbund" der Druck des einen Fluides anhand des Druckverlustes an der Drosselstelle verändert, um das gleiche Mischungsverhältnis zu erreichen. Auch hier wird ein hoher technischer Aufwand benötigt, und der nutzbare Leistungsbereich bleibt verhältnismäßig klein. Bei der sogenannten "Nulldruckregelung" wird der Druckverlust der Drosselstelle in dem einen Fluidstrom in etwa gleich gewählt wie der Druckverlust der Drosselstelle in dem anderen Fluidstrom, wodurch das Mischungsverhältnis unabhängig vom Durchsatz wird. Auch hier ist der nutzbare Leistungsbereich klein, da eine genaue Druckregelung bei kleinen Druckdifferenzen sehr schwierig ist. Introductory devices are also known in which the fuel gas metering after a pressure loss Throttle point is aimed. In the so-called "mechanical gas-air network" in order to change the performance, the flow cross-sections of air and fuel gas alike. However, this requires a great technical Expenditure. To change the performance, the so-called "Pneumatic compound" is the pressure of one fluid the pressure loss at the throttle point changed to the to achieve the same mixing ratio. Here too is a high technical effort required and the usable performance range remains relatively small. With the so-called "Zero pressure control" is the pressure loss of the throttle point in the one fluid stream chosen approximately the same as the pressure loss of the throttle point in the other fluid flow, which makes the mixing ratio independent of the throughput becomes. The usable performance range is also here small because of precise pressure control with small pressure differences is very difficult.
Aus der Veröffentlichung "Flame Special ISH Edition" der Firma Honeywell, Nr. 2, 1997 ist weiterhin eine Einleitungsvorrichtung bekannt, bei der das Brenngas in ein Venturirohr eingeleitet wird, in welchem ein negativer Luftdruck vorherrscht. Das Einleiten des Brenngases in den Luftstrom erfolgt dabei etwa im Bereich des engsten Querschnitts des Venturirohrs über eine koaxial zur Rohrachse des Venturirohrs angeordnete ringförmige Zuströmöffnung. Das aus dieser ringförmigen Zuströmöffnung mantelförmig um den Luftstrom herum austretende Brenngas strömt im wesentlichen ohne Durchmischung mit dem Luftstrom an der Diffusorwand des Venturirohrs entlang. Die eigentliche Durchmischung zwischen Brenngas und Luft erfolgt erst in einem stromabwärts der Zuströmöffnung bzw. des Venturirohrs angeordneten Gebläse. Die Brenngas-Zumessung richtet sich nach dem Unterdruck der Luft im Venturirohr, allerdings ist der Unterdruck im Venturirohr noch zu gering, um große Leistungsbereiche abdecken zu können.From the publication "Flame Special ISH Edition" by Honeywell, No. 2, 1997 is still an induction device known, in which the fuel gas in a Venturi tube is initiated in which a negative air pressure prevails. The fuel gas is introduced into the air flow around the narrowest cross section of the Venturi tube via a coaxial to the tube axis of the venturi tube arranged annular inflow opening. That from this ring-shaped inflow opening shaped like a jacket around the air flow fuel gas escaping around flows essentially without Mixing with the air flow on the diffuser wall of the Venturi tube along. The actual mixing between Fuel gas and air only take place in a downstream of the Inflow opening or the venturi arranged fan. The fuel gas metering depends on the negative pressure of the Air in the Venturi tube, however, the vacuum in the Venturi tube still too low to cover large performance ranges to be able to.
Bei der aus der eingangs genannten DE 33 45 611 A1 bekannten Einleitungsvorrichtung wird das Brenngas über eine Brennstofflanze axial in die Drehachse eines mit Schaufeln erzeugten Dralls, d.h. in das "Auge" eines Luftwirbels eingeleitet. In diesem Auge des Luftwirbels herrscht ein hoher Unterdruck, wodurch die Druckregelung des einzuleitenden Brenngases vereinfacht und somit die Zumessungsgenauigkeit erhöht wird.In the known from DE 33 45 611 A1 mentioned The fuel gas is introduced via a fuel lance axially in the axis of rotation of one generated with blades Swirls, i.e. introduced into the "eye" of a vortex of air. There is a high one in this eye of the air vortex Negative pressure, which causes the pressure control of the to be initiated Fuel gas simplifies and therefore the metering accuracy is increased.
Der vorliegenden Erfindung liegt demgegenüber die Aufgabe zugrunde, eine Einleitungsvorichtung der eingangs genannten Art derart weiterzubilden, daß eine noch bessere Zumessungsgenauigkeit erreicht werden kann. In contrast, the present invention has the object based on an introductory device of the aforementioned Art in such a way that even better metering accuracy can be achieved.
Diese Aufgabe wird erfindungsgemäß gelöst durch eine weitere (zweite) Drallerzeugungseinrichtung, die dem durch die Einströmöffnung strömenden Brenngas bzw. einem durch die Einströmöffnung strömenden Gemisch aus Luft und Brenngas bereits einen Drall aufprägt.According to the invention, this object is achieved by a further one (Second) swirl generating device, which through the inflow opening flowing fuel gas or one through the inflow opening already flowing mixture of air and fuel gas imbues a twist.
Durch die weitere Drallerzeugungseinrichtung, die dem durch die Einströmöffnung strömenden Brenngas bzw. dem durch die Einströmöffnung strömenden Gemisch aus Luft und Brenngas einen Drall aufprägt, kann bereits stromaufwärts der Einströmöffnung dem Brenngas bzw. dem Gemisch ein Drall aufgeprägt sein, der dann stromabwärts den der Luft aufgeprägten Drall noch verstärkt. Vorzugsweise ist diese weitere Drallerzeugungseinrichtung stromaufwärts der Einströmöffnung zur Erzeugung eines Dralls lediglich in der Luft des durch die Einströmöffnung strömenden Gemisches angeordnet.By the further swirl generating device, which by the the inflow fuel gas flowing through the Inflow opening flowing mixture of air and fuel gas Swirl imprints can already be upstream of the inflow opening a swirl is imparted to the fuel gas or the mixture be the downstream swirl of air reinforced. This is preferably a further swirl generating device upstream of the inflow opening for generation of a swirl only in the air of through the Inflow opening flowing mixture arranged.
Weiterhin kann es vorteilhaft sein, wenn die Einströmöffnung als Venturidüse ausgebildet ist. Um eine Ablösung der hindurchströmenden Strömung von der Diffusorwand der Venturidüse möglichst lange hinauszögern oder gar vollständig zu verhindern, kann der hindurchströmenden Strömung ein Drall aufgeprägt sein. Wenn Brenngas und Luft gemeinsam durch die Venturidüse strömen, führt dies bereits stromaufwärts der Einströmkammer zu einer verbesserten Durchmischung.Furthermore, it can be advantageous if the inflow opening is designed as a Venturi nozzle. To detach the flowing through Flow from the diffuser wall of the Venturi nozzle delay as long as possible or even prevent it completely, can cause a swirl to flow through it his. When fuel gas and air come together through the Venturi nozzle flow, this leads already upstream of the Inflow chamber for improved mixing.
Durch den Drall des rotierenden Luftstroms wird an der im Zentrum des Dralls angeordneten Einströmöffnung für das Brenngas ein hoher Unterdruck erzeugt, der die Druckregelung des einzuleitenden Brenngases entscheidend vereinfacht und somit die Zumessungsgenauigkeit erhöht. Dadurch kann schon bei einem geringen Druckabfall der Luft ein präzises, einstellbares Mischungsverhältnis mit dem Brenngas in einem großen Leistungsbereich erreicht werden. Die Erzeugung des Dralls in der Luft hat außerdem den Vorteil, daß die Strömung bei Richtungsänderungen nicht so leicht Ablösungserscheinungen zeigt und dadurch Bauraum eingespart werden kann.Due to the swirl of the rotating air flow is in the Inflow center arranged for the center of the swirl Fuel gas generates a high negative pressure, which regulates the pressure of the fuel gas to be introduced is significantly simplified and thus increasing the metering accuracy. This can already with a low pressure drop in the air a precise, adjustable Mixing ratio with the fuel gas in one large performance range can be achieved. The generation of the Swirls in the air also have the advantage that the flow with changes of direction not so easily detachment shows and thereby space is saved can.
Vorzugsweise weist die Drallerzeugungseinrichtung mindestens eine, insbesondere mehrere um ihren Umfang gleichmäßig verteilte drallerzeugende Leitschaufeln auf. Über verstellbare Leitschaufeln läßt sich darüber hinaus die Zumessung des Brenngases bzw. das Mischungsverhältnis zwischen Luft und Brenngas besonders einfach beeinflussen.The swirl generating device preferably has at least one, in particular several evenly distributed around its circumference swirl-generating guide vanes. Via adjustable Guide blades can also be the metering of Fuel gas or the mixing ratio between air and Influence fuel gas particularly easily.
Bei bevorzugten Ausführungsformen der Erfindung ist die Drallerzeugungseinrichtung als Zyklon ausgebildet. Es erweist sich als vorteilhaft, eine größere Menge an Brenngas im Zentrum des Zyklons zuströmen zu lassen, um Strömungsverluste zu reduzieren.In preferred embodiments of the invention Swirl generating device designed as a cyclone. It turns out turns out to be advantageous, a larger amount of fuel gas to flow in the center of the cyclone to avoid flow losses to reduce.
Besondere Vorteile ergeben sich, wenn stromabwärts der Einströmkammer ein Radialgebläse angeordnet ist. Der Drall des aus der Einströmkammer ausströmenden Gemisches kann zur Anströmung des Radialgebläses vorteilhaft genutzt werden. Bei Gegendrallanströmung kann eine besonders hohe Gebläseleistung erreicht werden, während bei Gleichdrallanströmung ein besonders verlustarmer Eintritt des Gemisches ins Radialgebläse möglich ist.Particular advantages arise when downstream of the inflow chamber a radial fan is arranged. The twist of the mixture flowing out of the inflow chamber can be used for inflow of the radial fan can be used advantageously. At Counter-swirl flow can be a particularly high fan output can be achieved while a constant swirl flow particularly low-loss entry of the mixture into the radial fan is possible.
Um den Unterdruck und auch die Vermischung von Brenngas und Luft noch weiter zu steigern, können mehrere solcher Einleitungsvorrichtungen, wie sie oben beschrieben sind, kaskadiert werden. Soll z.B. eine relativ kleine Menge an Brenngas zugemischt werden, so kann es vorteilhaft sein, nochmals eine Venturidüse oder einen Zyklon mit der Luft vorzuschalten (Kaskadierung).To the negative pressure and also the mixing of fuel gas and To increase air still further, several such induction devices, cascaded as described above become. Should e.g. a relatively small amount of fuel gas can be admixed, it can be advantageous again connect a Venturi nozzle or a cyclone with the air (Cascading).
Weitere Vorteile der Erfindung ergeben sich aus der Beschreibung und der Zeichnung. Die gezeigten und beschriebenen Ausführungsformen sind nicht als abschließende Aufzählung zu verstehen, sondern haben vielmehr beispielhaften Charakter für die Schilderung der Erfindung.Further advantages of the invention result from the description and the drawing. The shown and The embodiments described are not intended to be final Understand enumeration, but rather have exemplary Character for the description of the invention.
Es zeigt:
- Fig. 1
- eine schematische Darstellung eines Ausführungsbeispiels einer erfindungsgemäßen Einleitungsvorrichtung; und
- Fig. 2
- einen Querschnitt durch die Einleitungsvorrichtung der Fig. 1, dargestellt in drei unterschiedlichen Schnittsegmenten entsprechend A, B, C in Fig. 1.
- Fig. 1
- a schematic representation of an embodiment of an introduction device according to the invention; and
- Fig. 2
- 2 shows a cross section through the introduction device of FIG. 1, shown in three different sectional segments corresponding to A, B, C in FIG. 1.
Die Figuren der Zeichnung zeigen den erfindungsgemäßen Gegenstand teilweise stark schematisiert und sind nicht notwendigerweise maßstäblich zu verstehen.The figures of the drawing show the subject matter of the invention some are highly schematic and are not necessarily to understand to scale.
In Fig. 1 ist mit 10' eine Einleitungsvorrichtung für einen
Gas-Vormischbrenner (nicht dargestellt) gezeigt, in der
Luft 11, 11' und Brenngas 12 miteinander vermischt werden
und dann dem Gas-Vormischbrenner als Gemisch 13 zugeleitet
werden. Dazu wird über ein Radialgebläse 14, das vom Motor
15 in Drehrichtung 16 angetrieben wird, die Luft 11 über eine
Umfangsöffnung 17 in eine Einströmkammer 18 angesaugt. In
der Einströmkammer 18 sind Leitschaufeln 19 (Fig. 2) angeordnet,
die einen Zyklon bilden und die der durch die Einströmkammer
18 strömenden Luft 11 einen Drall 20 aufprägen,
wie auch durch die Strömungspfeile 21 in Fig. 2 angedeutet
ist.In Fig. 1, 10 'shows an introduction device for a gas premix burner (not shown) in which
Im Zentrum des Dralls 20, d.h. im Bereich seiner Drehachse
22, ist eine Einströmöffnung 23' in Form einer Venturidüse
29 vorgesehen, durch die das Brenngas 12 und weitere Luft
11' in Richtung der Drehachse 22 gemeinsam in die Einströmkammer
18 eingeleitet werden. Über das Radialgebläse 14 wird
die Luft 11' über einen Luftkanal 31 und in die Venturidüse
29 angesaugt, wobei die Luft 11' das Brenngas 12 über eine
im Bereich der Drehachse 22 angeordnete düsenförmige Zuströmöffnung
32 mitreißt. Bereits im Luftkanal 31 wird der Luft
11' stromaufwärts der Einströmöffnung 23' über Leitbleche 33
(Fig. 2) ein Drall 34 aufgeprägt, der sich als Drall 34' in
der Venturidüse 19 fortsetzt und den Drall 20 der Luft 11
noch verstärkt, wie durch den Pfeil 35 angedeutet ist. Durch
den Drall 35 wird an der Einströmöffnung 23 ein sehr hoher
Unterdruck erzeugt, der die Druckregelung des einzuleitenden
Brenngases 12 entscheidend vereinfacht und somit die Zumessungsgenauigkeit
erhöht.In the center of the
Wie das Schnittsegment C in Fig. 2 zeigt, strömt das Gemisch
25 aus Luft 11, 11' und Brenngas 12 im Radialgebläse 14 radial
nach außen in einen äußeren Strömungskanal 24 ein und
dann über eine Austrittsöffnung 26 in Richtung auf den Gas-Vormischbrenner
aus. As the sectional segment C in FIG. 2 shows, the
Im gezeigten Ausführungsbeispiel sind der Drall 35 und die
Drehrichtung 16 des Radialgebläses 14 gleich gerichtet, wodurch
ein besonders verlustarmer Eintritt des Gemisches in
das Radialgebläse 14 möglich ist, wenn das Gebläserad 27 des
Radialgebläses 14 mit entsprechenden Leitschaufeln 28 ausgestattet
ist.In the exemplary embodiment shown, the
Das Mischungsverhältnis von Luft 11 und Brenngas 12 berechnet
sich - idealisiert - wie folgt, wenn der Volumenstrom V
durch eine Düse:
- mit A1:
- Düsenquerschnitt für die
Luft 11, der näherungsweise durch den Querschnitt in derEinströmkammer 18 und, falls vorhanden, durch den Austrittsquerschnitt derVenturidüse 19, abzüglich des Düsenquerschnitts für dasBrenngas 12, multipliziert mit dem Flächenverhältnis derVenturidüse 19 gegeben ist, - mit σ1:
- Dichte der Luft,
- mit p1:
- Eintrittsdruck der
Luft 11, und - mit pG:
- gemeinsamer
Austrittsdruck von Luft 11 und Brenngas 12vor dem Radialgebläse 14.
- with A 1 :
- Nozzle cross section for the
air 11, which is approximately given by the cross section in theinflow chamber 18 and, if present, by the outlet cross section of theVenturi nozzle 19, minus the nozzle cross section for thefuel gas 12, multiplied by the area ratio of theVenturi nozzle 19, - with σ1:
- Density of air,
- with p 1 :
-
Air inlet pressure 11, and - with p G :
- common outlet pressure of
air 11 andfuel gas 12 in front of theradial fan 14.
Der Volumenstrom V2 des Brenngases 12 ist gegeben durch:
- mit A2:
- Düsenquerschnitt
für das Brenngas 12, - mit p2:
- Eintrittsdruck Brenngas, normalerweise gleich p1, und
- mit v:
- Gerätekonstante, z.B. 4, d.h., ein bestimmtes
Druckgefälle am Düsenquerschnitt für die
Luft 11 erzeugt das 4-fache Druckgefälle am Düsenquerschnittfür das Brenngas 12.
- with A 2 :
- Nozzle cross section for the
fuel gas 12, - with p 2 :
- Fuel gas inlet pressure, normally equal to p 1 , and
- with V:
- Device constant, for example 4, ie a certain pressure drop across the nozzle cross section for the
air 11 generates 4 times the pressure drop across the nozzle cross section for thefuel gas 12.
Durch Verringern des Druckes p2 wird ein geringerer Anteil
des Brenngases 12 zugemischt. Dadurch kann eine leistungsabhängige
Veränderung des Mischungsverhältnisses erreicht werden.
Bei konstanter Druckveränderung, z.B. durch andere Einstellung
am Druckregler für das Brenngas 12, wird das Mischungsverhältnis
bei kleinen Durchsatzleistungen verstärkt
verändert, bei Drosselung wird das Mischungsverhältnis verstärkt
bei hohen Durchsatzleistungen verändert.By reducing the pressure p 2 , a smaller proportion of the
Claims (8)
- An admission device (10, 10') for introducing combustible gas (12) into an air stream, particularly for a gas pre-mix burner, with an inflow chamber (18) for the air (11), with an inflow port (23, 23') leading into the inflow chamber (18) and provided for the combustible gas (12) and with a first swirl-generating means by means of which the air (11) flowing through the inflow chamber (18) has a twist (20) imposed upon it, the inflow port (23, 23') being disposed in the axis (22) of the first swirl-generating means (20), characterised by a further second swirl- generating means which already imposes a swirl (34, 34') upon the combustible gas (12) flowing through the inflow port (23) or on a mixture (30) of air (11') and combustible gas (12) which flows through the inflow port (23').
- An admission device according to claim 1, characterised in that the second swirl-generating means is disposed upstream of the inflow port (23') for generating a twist (34) in the air (11') of the mixture (30) flowing through the inflow port (23').
- An admission device according to claim 1 or 2, characterised in that the inflow port (23') is constructed as a Venturi jet (29).
- An admission device according to one of the preceding claims, characterised in that the first swirl-generating means comprises at least one swirl-generating baffle (19).
- An admission device according to claim 4, characterised in that the at least one baffle (19) is adjustable.
- An admission device according to one of the preceding claims, characterised in that the first swirl-generating means is constructed as a cyclone.
- An admission device according to one of the preceding claims, characterised by a radial fan (14) disposed downstream of the inflow chamber (18).
- An admission device characterised by a cascading of a plurality of admission devices (10, 10') according to one of the preceding claims.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19733769 | 1997-08-05 | ||
DE19733769A DE19733769C2 (en) | 1997-08-05 | 1997-08-05 | Fuel gas introduction device for a gas premix burner |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0896191A2 EP0896191A2 (en) | 1999-02-10 |
EP0896191A3 EP0896191A3 (en) | 1999-11-10 |
EP0896191B1 true EP0896191B1 (en) | 2001-02-14 |
Family
ID=7838003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98112693A Expired - Lifetime EP0896191B1 (en) | 1997-08-05 | 1998-07-09 | Fuel gas admission device for a premix burner |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0896191B1 (en) |
AT (1) | ATE199180T1 (en) |
DE (2) | DE19733769C2 (en) |
ES (1) | ES2157103T3 (en) |
PT (1) | PT896191E (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8839815B2 (en) | 2011-12-15 | 2014-09-23 | Honeywell International Inc. | Gas valve with electronic cycle counter |
US8899264B2 (en) | 2011-12-15 | 2014-12-02 | Honeywell International Inc. | Gas valve with electronic proof of closure system |
US8905063B2 (en) | 2011-12-15 | 2014-12-09 | Honeywell International Inc. | Gas valve with fuel rate monitor |
US8947242B2 (en) | 2011-12-15 | 2015-02-03 | Honeywell International Inc. | Gas valve with valve leakage test |
US9074770B2 (en) | 2011-12-15 | 2015-07-07 | Honeywell International Inc. | Gas valve with electronic valve proving system |
US9234661B2 (en) | 2012-09-15 | 2016-01-12 | Honeywell International Inc. | Burner control system |
US9557059B2 (en) | 2011-12-15 | 2017-01-31 | Honeywell International Inc | Gas valve with communication link |
US9995486B2 (en) | 2011-12-15 | 2018-06-12 | Honeywell International Inc. | Gas valve with high/low gas pressure detection |
US10024439B2 (en) | 2013-12-16 | 2018-07-17 | Honeywell International Inc. | Valve over-travel mechanism |
US10215291B2 (en) | 2013-10-29 | 2019-02-26 | Honeywell International Inc. | Regulating device |
USD960321S1 (en) | 2019-06-11 | 2022-08-09 | Karl Dungs Gmbh & Co. Kg | Venturi signal amplifier |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1315743B1 (en) * | 2000-10-03 | 2003-03-18 | Sit La Precisa Spa | IMPROVED AIR-GAS MIXER DEVICE. |
ITPD20010023A1 (en) | 2001-02-01 | 2002-08-01 | Sit La Precisa Spa | IMPROVED AIR-GAS MIXER DEVICE. |
AT412667B (en) * | 2003-01-27 | 2005-05-25 | Vaillant Gmbh | MIXING DEVICE FOR FUEL GAS AND AIR |
DE102004054796B3 (en) | 2004-11-12 | 2006-03-16 | Robert Bosch Gmbh | Mixer unit e.g. for gas premix burner, has combustion air channel which moves air downstream into blower for promotion of gas air mixture to burner surface, as well as to attached gas armature |
DE102007008460A1 (en) * | 2007-02-19 | 2008-08-21 | Viessmann Werke Gmbh & Co Kg | Mixing device for a gas blower burner |
ITPD20080006A1 (en) | 2008-01-08 | 2009-07-09 | Ln 2 S R L | ENTRY DEVICE FOR AIR / GAS FLOW IN A FAN UNIT, PARTICULARLY FOR GAS BURNERS WITH PRE-MIXING. |
ITPD20080005A1 (en) * | 2008-01-08 | 2009-07-09 | Ln 2 S R L | AIR-GAS MIXER DEVICE, PARTICULARLY FOR PRE-MIXING BURNER APPLIANCES. |
IT1395189B1 (en) * | 2009-07-22 | 2012-09-05 | Ln 2 Srl Socio Unico | AIR-GAS MIXER DEVICE, PARTICULARLY FOR PRE-MIXING BURNER APPLIANCES. |
DE102009050562A1 (en) * | 2009-10-23 | 2011-04-28 | Ebm-Papst Landshut Gmbh | Device for the suction side of a blower |
EP2413031B1 (en) * | 2010-07-26 | 2014-05-07 | Hovalwerk AG | Premixing combustion device |
IT1402076B1 (en) * | 2010-09-02 | 2013-08-28 | Sit La Precisa Spa Con Socio Unico | AIR-GAS MIXER DEVICE FOR COMBUSTIBLE GAS BURNERS WITH PREMIXING |
IT1402023B1 (en) * | 2010-10-12 | 2013-08-28 | Riello Spa | POWER SUPPLY GROUP OF AN AIR / GAS MIXTURE. |
DE102011014117A1 (en) * | 2011-03-15 | 2012-09-20 | Ebm-Papst Landshut Gmbh | Mixing device for mixing combustion air and gas for a gas appliance |
US9835265B2 (en) | 2011-12-15 | 2017-12-05 | Honeywell International Inc. | Valve with actuator diagnostics |
US9851103B2 (en) | 2011-12-15 | 2017-12-26 | Honeywell International Inc. | Gas valve with overpressure diagnostics |
US9846440B2 (en) | 2011-12-15 | 2017-12-19 | Honeywell International Inc. | Valve controller configured to estimate fuel comsumption |
US10422531B2 (en) | 2012-09-15 | 2019-09-24 | Honeywell International Inc. | System and approach for controlling a combustion chamber |
US9841122B2 (en) | 2014-09-09 | 2017-12-12 | Honeywell International Inc. | Gas valve with electronic valve proving system |
US9645584B2 (en) | 2014-09-17 | 2017-05-09 | Honeywell International Inc. | Gas valve with electronic health monitoring |
US10503181B2 (en) | 2016-01-13 | 2019-12-10 | Honeywell International Inc. | Pressure regulator |
US10564062B2 (en) | 2016-10-19 | 2020-02-18 | Honeywell International Inc. | Human-machine interface for gas valve |
US11073281B2 (en) | 2017-12-29 | 2021-07-27 | Honeywell International Inc. | Closed-loop programming and control of a combustion appliance |
US10697815B2 (en) | 2018-06-09 | 2020-06-30 | Honeywell International Inc. | System and methods for mitigating condensation in a sensor module |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1290650B (en) * | 1955-01-03 | 1969-03-13 | Fritz Dr Ing | Device for mixing and carrying out combustion reactions |
FR1141977A (en) * | 1955-12-14 | 1957-09-12 | All gas burner with vertical mixer for hobs of domestic ranges | |
SU343111A1 (en) * | 1970-09-25 | 1972-06-22 | А. И. Ващенко, М. И. Топтыгин, А. И. Либерман, Г. П. Денисов, В. Г. Скудин , В. Л. Гусовский | RADIATION GAS BURNER |
GB1499213A (en) * | 1976-01-22 | 1978-01-25 | Trapp C | Gas burners |
DE3345611A1 (en) * | 1983-12-16 | 1985-06-27 | Deutsche Babcock Werke AG, 4200 Oberhausen | Burner for the production of inert gas |
-
1997
- 1997-08-05 DE DE19733769A patent/DE19733769C2/en not_active Expired - Fee Related
-
1998
- 1998-07-09 PT PT98112693T patent/PT896191E/en unknown
- 1998-07-09 DE DE59800469T patent/DE59800469D1/en not_active Expired - Lifetime
- 1998-07-09 EP EP98112693A patent/EP0896191B1/en not_active Expired - Lifetime
- 1998-07-09 AT AT98112693T patent/ATE199180T1/en not_active IP Right Cessation
- 1998-07-09 ES ES98112693T patent/ES2157103T3/en not_active Expired - Lifetime
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8839815B2 (en) | 2011-12-15 | 2014-09-23 | Honeywell International Inc. | Gas valve with electronic cycle counter |
US8899264B2 (en) | 2011-12-15 | 2014-12-02 | Honeywell International Inc. | Gas valve with electronic proof of closure system |
US8905063B2 (en) | 2011-12-15 | 2014-12-09 | Honeywell International Inc. | Gas valve with fuel rate monitor |
US8947242B2 (en) | 2011-12-15 | 2015-02-03 | Honeywell International Inc. | Gas valve with valve leakage test |
US9074770B2 (en) | 2011-12-15 | 2015-07-07 | Honeywell International Inc. | Gas valve with electronic valve proving system |
US9557059B2 (en) | 2011-12-15 | 2017-01-31 | Honeywell International Inc | Gas valve with communication link |
US9995486B2 (en) | 2011-12-15 | 2018-06-12 | Honeywell International Inc. | Gas valve with high/low gas pressure detection |
US9234661B2 (en) | 2012-09-15 | 2016-01-12 | Honeywell International Inc. | Burner control system |
US10215291B2 (en) | 2013-10-29 | 2019-02-26 | Honeywell International Inc. | Regulating device |
US10024439B2 (en) | 2013-12-16 | 2018-07-17 | Honeywell International Inc. | Valve over-travel mechanism |
USD960321S1 (en) | 2019-06-11 | 2022-08-09 | Karl Dungs Gmbh & Co. Kg | Venturi signal amplifier |
Also Published As
Publication number | Publication date |
---|---|
PT896191E (en) | 2001-07-31 |
ES2157103T3 (en) | 2001-08-01 |
EP0896191A3 (en) | 1999-11-10 |
DE19733769C2 (en) | 2003-05-22 |
DE19733769A1 (en) | 1999-02-11 |
ATE199180T1 (en) | 2001-02-15 |
EP0896191A2 (en) | 1999-02-10 |
DE59800469D1 (en) | 2001-03-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0896191B1 (en) | Fuel gas admission device for a premix burner | |
EP0896192A2 (en) | Fuel gas admission device for a premix burner | |
DE60007946T2 (en) | A combustion chamber | |
DE3029095C2 (en) | Double fuel injector for a gas turbine engine | |
EP0580683B1 (en) | Burner arrangement, especially for gas turbines, for the low-pollutant combustion of coal gas and other fuels | |
EP0438682B1 (en) | Exhaust system with particle filter and regeneration burner | |
EP2179222B1 (en) | Burner for a combustion chamber of a turbo group | |
DE2143012A1 (en) | Burner systems | |
EP1714081B1 (en) | Premixing burner arrangement for operating a burner chamber and method for operating a burner chamber | |
DE2345282B2 (en) | Combustion device for gas turbine engines | |
DE2912103C2 (en) | Burner for a gas turbine engine | |
DE4012411C2 (en) | ||
DE19532264C2 (en) | Device for the preparation of a mixture of fuel and air in combustion chambers for gas turbine engines | |
DE19733768C2 (en) | Fuel gas introduction device for a gas premix burner | |
EP1352197B1 (en) | Burner for the combustion of particulate fuel | |
EP0589226B1 (en) | Burner for liquid ot gaseous fuels | |
DE1526813A1 (en) | Gas mixing plant for turbo engines | |
DE202022104142U1 (en) | Device for swirling a liquid | |
DE2160675C3 (en) | Burner device for a gas turbine combustion chamber | |
EP0573028A2 (en) | Combustion chamber, particularly for regenerating the particle filter in a motor vehicle exhaust device | |
DE10327391B3 (en) | Mixer unit for a gas- or oil-fired central heating burner has chamber with a fuel supply harmonisation unit with numerous fine apertures | |
DE1007931B (en) | Burners for industrial furnaces | |
EP1016830B1 (en) | Gas turbine combustor | |
DE102021125045A1 (en) | Engine with centrifugal compressor, annular combustion chamber and a guide channel arrangement having different guide channel elements | |
AT238355B (en) | Device for conveying combustion air in a fan burner for gases, liquids or dust |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH DE ES FR GB IT LI NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 19991123 |
|
17Q | First examination report despatched |
Effective date: 20000127 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
AKX | Designation fees paid |
Free format text: AT BE CH DE ES FR GB IT LI NL PT SE |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
ITF | It: translation for a ep patent filed |
Owner name: PATRITO BREVETTI |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE ES FR GB IT LI NL PT SE |
|
REF | Corresponds to: |
Ref document number: 199180 Country of ref document: AT Date of ref document: 20010215 Kind code of ref document: T |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: RIEDERER HASLER & PARTNER PATENTANWAELTE AG Ref country code: CH Ref legal event code: EP |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20010214 |
|
REF | Corresponds to: |
Ref document number: 59800469 Country of ref document: DE Date of ref document: 20010322 |
|
ET | Fr: translation filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: PT Payment date: 20010629 Year of fee payment: 4 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20010727 Year of fee payment: 4 |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: SC4A Free format text: AVAILABILITY OF NATIONAL TRANSLATION Effective date: 20010430 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2157103 Country of ref document: ES Kind code of ref document: T3 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
26N | No opposition filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020710 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030131 |
|
EUG | Se: european patent has lapsed | ||
REG | Reference to a national code |
Ref country code: PT Ref legal event code: MM4A Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 20030131 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20040630 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20040702 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20040705 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20040804 Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050709 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050731 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050731 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060201 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20060201 |
|
BERE | Be: lapsed |
Owner name: KARL *DUNGS G.M.B.H. & CO. Effective date: 20050731 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R088 Ref document number: 59800469 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: GD2A Effective date: 20110523 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E Free format text: REGISTERED BETWEEN 20110609 AND 20110615 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: CL |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 19 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20170728 Year of fee payment: 20 Ref country code: FR Payment date: 20170724 Year of fee payment: 20 Ref country code: DE Payment date: 20170630 Year of fee payment: 20 Ref country code: ES Payment date: 20170825 Year of fee payment: 20 Ref country code: GB Payment date: 20170719 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: S117 Free format text: REQUEST FILED; REQUEST FOR CORRECTION UNDER SECTION 117 FILED ON 9 OCTOBER 2017 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: CJ Effective date: 20171218 Ref country code: FR Ref legal event code: CD Owner name: KARL DUNGS GMBH & CO. KG, DE Effective date: 20171218 Ref country code: FR Ref legal event code: CA Effective date: 20171218 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: S117 Free format text: REQUEST FOR CORRECTION UNDER SECTION 117 FILED ON 09 OCTOBER 2017 NOT PROCEEDED WITH ON 10 APRIL 2018 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 59800469 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 Expiry date: 20180708 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20180708 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20200721 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20180710 |