EP0775869B1 - Brûleur à prémélange - Google Patents

Brûleur à prémélange Download PDF

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Publication number
EP0775869B1
EP0775869B1 EP96810756A EP96810756A EP0775869B1 EP 0775869 B1 EP0775869 B1 EP 0775869B1 EP 96810756 A EP96810756 A EP 96810756A EP 96810756 A EP96810756 A EP 96810756A EP 0775869 B1 EP0775869 B1 EP 0775869B1
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EP
European Patent Office
Prior art keywords
duct
premix burner
flow
vortex generators
burner according
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
Application number
EP96810756A
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German (de)
English (en)
Other versions
EP0775869A2 (fr
EP0775869A3 (fr
Inventor
Klaus Dr. Döbbeling
Adnan Dr. Eroglu
Peter Dr. Senior
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
Original Assignee
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ABB Research Ltd Switzerland, ABB Research Ltd Sweden filed Critical ABB Research Ltd Switzerland
Publication of EP0775869A2 publication Critical patent/EP0775869A2/fr
Publication of EP0775869A3 publication Critical patent/EP0775869A3/fr
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Publication of EP0775869B1 publication Critical patent/EP0775869B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
    • F23D17/002—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel gaseous or liquid fuel
    • 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
    • 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
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
    • F23M9/02—Baffles or deflectors for air or combustion products; Flame shields in air inlets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/07002—Premix burners with air inlet slots obtained between offset curved wall surfaces, e.g. double cone burners

Definitions

  • the invention relates to a premix burner for combustion of gaseous and / or liquid fuel, in which the fuel as a secondary flow in a gaseous, channeled main flow is injected, the secondary flow has a much smaller mass flow than the mainstream.
  • a premix burner is known from EP 0 321 809 B1 due to low NOx emission values (approx. 25 ppm) and a high one Flame stability distinguishes.
  • This premix burner too Called double cone burner, consists of hollow, one into one Partial conical bodies with tangential air inlet slots for the combustion air flowing in from the compressor on and feeders for gaseous and liquid Fuels, the central axes of the hollow partial cone body a widening taper in the direction of flow have and offset to each other in the longitudinal direction run.
  • Inside the burner (cone tip) is one Fuel nozzle arranged for the liquid fuel through which the fuel at an acute angle into the hollow cone is injected.
  • the resulting tapered liquid fuel profile is caused by the tangentially rotating combustion air flow enclosed, the concentration in the axial direction of fuel as a result of mixing with the combustion air is constantly decreasing.
  • the premix burner can too operated with gaseous fuel or in mixed operation become.
  • the mixture of the gaseous forms Fuel with the combustion air already in the tangential Air inlet slots into which the gaseous fuel is introduced via uniformly distributed nozzles.
  • EP 0 619 456 A1 describes a fuel supply system for a Combustion chamber with premix combustion known, in which a gaseous and / or liquid fuel as a secondary flow injected into a gaseous, channeled main flow is, the secondary flow being a much smaller one Mass flow has as the main flow and where the flows through premix channel curved walls.
  • the channel is annular and on the outer as well as inner ring wall are an equal number of vortex generators strung together in the circumferential direction.
  • These vortex generators point three in the direction of flow extending, freely flowed areas, one of which the roof and the other two form the side surfaces.
  • the side surfaces are flush with the same duct wall and together form an arrow angle ⁇ .
  • the roof area lies with a sell across the channel Edge on the same duct wall as the side surfaces and the longitudinal edges of the roof surface that are flush are with the longitudinal ones protruding into the flow channel Edges of the side surfaces run under one Angle of attack ⁇ to the duct wall.
  • They are also half vortex generators possible where only one of the two side surfaces of the vortex generator with an arrow angle ⁇ / 2 while the other side is straight and in Flow direction is aligned.
  • the connecting edges of Two opposite vortex generators can do this lie on the same radial or by half a division be offset.
  • a device for premixing air and fuel is in a mixing channel prior to combustion in gas turbines known with a number of inner and outer independent and opposite to each other rotating vortex generators.
  • the outer vortex generators also contain blades Openings for the supply of liquid or gaseous fuel.
  • Compressed air is introduced into the mixing channel via the inner and outer vortex generators, to create an intense shear area.
  • the high pressure air becomes uniform there mixed with the fuel, minimizing contamination during combustion arise.
  • the flame stability that can be achieved here is not always sufficient.
  • the invention has for its object a premix burner for the combustion of gaseous and / or liquid
  • the burner is characterized by a simple geometry and reliable operating behavior should honor.
  • the burner is said to be within shortest Stretch an intimate mixture of combustion air and Fuel can be achieved with more uniform at the same time Speed distribution in the mixing zone, also with such a burner without using a mechanical Flame holder is certain to kick back the flame should be avoided.
  • this is according to a premix burner Preamble of claim 1, which with a fuel supply system works, which is known from EP 0 619 456 A1 is achieved in that the vortex generators used generate such vortices, which after mixing the Fuel with the air of the fuel / air mixture flow leave a residual vortex that of the canal walls formed annular main flow channel with a constant Height a length downstream of the vortex generators and the fuel injection, which in the area between the 5 to 20 times its height and that the ring-shaped Main flow channel then by closing the inner cylinder wall to a circular main flow channel expanded.
  • the advantages of the invention are that Fuel supply system and the use of vortex generators on the one hand an intensive complete mixture of fuel and combustion air in a very short mixing section without transfer areas and with a uniform speed profile takes place, which is a prerequisite for minimization is the NOx content and that on the other hand due to the the vortex generators generated residual vertebrae after the Mixture still present in the fuel / air mixture flow is what affects the recirculation zone positively the flame stability increases and the cross mix of the different Improved burner in an annular combustion chamber.
  • the annular premix burner according to the invention is characterized by a simple geometry and is therefore structurally easy to manufacture.
  • the recirculation zone which is used as an ignition source serves for incoming fresh fuel / air mixture, it is also necessary that after a sufficient Length of the annular pre-mix section of the inner cylinder closes. This can be done gradually in a convenient manner or take place suddenly, so that the main flow channel either gradually expanded or a sudden one Transition from the ring channel to the circular channel.
  • the recirculation zone then forms in a circular cross-section.
  • vortex generators are an advantage in the premix burner arranged, which is approximately the shape of a rectangular Have triangle of small thickness, the two flowed around triangular side surfaces parallel to each other run and together with the roof surface the connecting surface include, the roof surface with an edge and the Connection surface with an edge on the same duct wall fit like the two side walls.
  • He shows a possible embodiment in a longitudinal section of the annular premix burner according to the invention.
  • He consists essentially of two cylinders with each other different diameters, which are concentric to each other are arranged so that the inner cylinder wall 21a and outer cylinder wall 21b delimit an annular channel 20.
  • Vortex generators 9 are arranged, their shape and mode of action described below becomes.
  • the channel 20 has a constant height H and has a length L downstream of the vortex generators, which in the Range between 5 and 20 times its height H and the premixing section for combustion air 1 and gaseous Fuel 2 forms.
  • piping 3 is immediate downstream of the vortex generators 9 gaseous fuel 2 via openings 4 in the outer cylinder wall 21b as a secondary flow injected into the main flow of the ring channel 20 and mixed with the combustion air 1.
  • the contribution the gaseous fuel 2 could of course also on the inner cylinder wall 21a or best on both Walls 21a and 21b take place, as in the lower part of Fig. 1 is shown.
  • the variant shown in FIG. 1 closes the premixing section gradually the inner cylinder wall 21a, so that the inner cylinder is completed by a cone tip becomes.
  • the outer cylinder wall 21b narrows in the area the cone tip first, before moving on encloses a circular cross section in which forms a recirculation zone that acts as an ignition source for incoming fresh fuel / air mixture is used.
  • FIG. 2 is a further embodiment variant of the annular Premix burner shown.
  • the inner cylinder closes after a sufficient long premixing section (length L is approx. 5 to 20 times the channel height H) suddenly, so that the transition from the ring channel 20 to the circular channel, in which the recirculation zone 22 trained, abruptly.
  • the gaseous fuel 2 is here through openings on the inner and outer cylinder attached immediately downstream of the vortex generators 9 annular fuel supply lines 5 as Secondary flow into that swirled by the vortex generators Main flow introduced and intense with the air mixed.
  • FIG 3 shows a third variant of the premix burner.
  • Ring channel 20 vortex generators 9 arranged, via which Air 1 is carried as the main flow and swirled before immediately downstream of the vortex generators 9 gaseous Fuel is injected.
  • Air 1 is carried as the main flow and swirled before immediately downstream of the vortex generators 9 gaseous Fuel is injected.
  • To enhance the vortex effect are upstream of the vortex generators 9 deflection blades 8 arranged in the ring channel 20.
  • the same effect can be achieved when the main flow is tangential over the annulus Slots (not shown here) enters the annular space 20 and thereby receives a tangential speed component.
  • the inner cylinder also closes gradually here however not to a cone tip, but to one Hemisphere.
  • the vortex generators 9 installed in the ring channel 20 can have different shapes. Essential to the invention is that they create longitudinal vortices with no recirculation area and therefore a complete one within the shortest distance Enable the fuel to be mixed with the combustion air, on the other hand, after mixing in a residual vortex the flow remains, which runs along the wake of the inner Cylinder is present. This residual vortex affects the recirculation zone and on the one hand ensures a high Flame stability and on the other hand for a good cross mix of the various burners in the ring combustion chamber.
  • Vortex generators 9 are half delta wings, i.e. (see FIG. 4) that a vortex generator 9 freely flowed around three Surfaces 10, 11, 12 which extends in the direction of flow extend and one of which is the roof surface 10 and the other two form the side surfaces 11, 13 that the Side surfaces 11, 13 flush with the same channel wall 21 are and a side surface 11 provided with an arrow angle ⁇ / 2 while the other side surface 13 is straight and in Direction of flow is aligned that the roof surface 10 with an edge running transversely to the channel 20 through which flow flows 15 abuts the same channel wall 21 as the side surfaces 11, 13, and that the longitudinal edges 12, 14 of the roof surface 10, which are flush with those in the flow channel 21 protruding longitudinal edges of the side surfaces 11, 13 run at an angle of attack ⁇ to the channel wall 21.
  • the two side surfaces 11, 13 comprise a connecting edge 16 with each other, which together with the longitudinal Edges 12, 14 of roof surface 10 form a tip 18, the connecting edge in the radial of the curved channel wall 21 runs.
  • the connecting edge 16 and / or the longitudinal edges 12, 14 of the roof surface 10 are there at least approximately sharp.
  • the vortex generator works as follows: Flow around the edge 14 of the half arrow angle ⁇ / 2 provided side surface 11, the main flow into one Vortex converted, its axis in the axis of the main flow lies. On the straight side surface 13 in the direction of flow the main flow is aligned, there will be no vortex generated so that a swirl is forced on the flow and there is no vortex-neutral field. Will now be immediate downstream of the vortex generators 9 the fuel as described above introduced as a secondary flow into the main flow, this leads to an intensive mixing of the combustion air 1 and fuel 2.
  • the vortex generator 9a has approximately the shape of a rectangular triangle of small thickness on, the two flowed around triangular side surfaces 11, 13 run parallel to each other and together with the Roof surface 10 comprise the connecting surface 19, the Roof surface 10 with an edge 15 and the connecting surface 19 rest with an edge 17 on the same channel wall as that two side walls 11, 13 and the side surfaces 11, 13 with the main flow direction of the incoming air form ⁇ .
  • the roof surface 10 can also be concave or convex curved his. This has 9a compared to vortex generators with a straight roof surface the advantage of being the same Vortex strength can be generated with a lower pressure drop can.
  • vortex generators 9a are extremely easy to manufacture, for example by punching out thin sheets. Because the width the roof area 10 in the vortex generators 9a is small is, vortex formation practically only occurs on one Side and there is a very large vortex that the Fuel / air mixture formation positively influenced.
  • FIG. 6 shows a modified embodiment of the one in FIG. 5 shown vortex generator 9a, in which the two side surfaces 11 and 13 are not rectangular in shape Have triangles, but are trapezoidal. Also these vortex generators 9a are excellent for Vortex generation suitable.
  • Figures 7 to 10 show different arrangement variants the vortex generators 9 and 9a in the ring channel 20 of the premix burner.
  • vortex generators 9 according to FIG. 4 are both on the inner cylinder wall 21a, as well as on the outer cylinder wall 21b arranged. They have a height h that is almost the whole Fills channel height H.
  • Fig. 8 are the vortex generators 9 that are on the inner Cylinder wall 21a are arranged smaller than that on the arranged outer wall 21b, its height h is only about H / 2, while the height h of the outer vortex generators 9 is equal to the channel height H.
  • vortex generators 9 different geometries create vortices different strength, which is beneficial to flame stabilization necessary residual vertebrae.
  • FIG. 9 shows an arrangement of vortex generators 9a with a 6.
  • the height h corresponds to the channel height H, i.e. they fill the entire channel height H.
  • the flattened part of the roof surface 13 is adjacent to the inner Cylinder wall 21a.
  • the resulting eddies are with arrows characterized.
  • FIG. 10 there is a variant of the arrangement of the vortex generators 9a shown in FIG. 5 in the ring channel 20.
  • the vortex generators 9a are both on the inner cylinder wall 21a, and also arranged on the outer cylinder wall 21b, for example welded on.
  • Two opposite Vortex generators 9a are each divided by half offset to each other in the circumferential direction, so that the twist direction Outside and inside is the same and the vertebrae are like add up to a large vortex that is both sufficient is for the complete mixing of air and fuel and then as a residual vortex for flame stabilization contributes.
  • the premix burner is also excellent for operation with Partial load suitable because it is due to the geometry of the burner is easily possible, pilot gas or secondary gas directly into the recirculation zone. This will limit the stability of the burner enlarged.

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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)

Claims (17)

  1. Brûleur à prémélange pour la combustion de combustible gazeux et/ou liquide, le brüleur à prémélange travaillant avec un circuit d'arrivée de combustible, dans lequel le combustible est injecté sous forme d'écoulement secondaire dans un écoulement principal gazeux canalisé, dans lequel l'écoulement secondaire présente un débit massique nettement plus petit que l'écoulement principal, dans lequel le canal de prémélange parcouru (20) est annulaire et est délimité par une paroi cylindrique intérieure (21a) et une extérieure (21b), lesquelles parois cylindriques (21a, 21b) présentent chaque fois un rayon constant le long de la longueur (L) du canal (20), et dans lequel l'écoulement principal est conduit sur des générateurs de tourbillons (9, 9a) qui produisent des tourbillons longitudinaux sans zones de recirculation, dont plusieurs sont disposés les uns à côté des autres sur au moins une paroi de canal (21) sur la périphérie du canal annulaire (20), et dans lequel des moyens d'injection de combustible sont disposés sur la paroi de canal intérieure et/ou extérieure (21a, 21b) immédiatement en aval des générateurs de tourbillons (9, 9a), dans lequel
    les générateurs de tourbillons (9, 9a) produisent des tourbillons tels qu'après le mélange complet du combustible avec l'air, ils laissent un tourbillon résiduel dans l'écoulement du mélange combustible/air;
    la longueur (L) du canal d'écoulement principal annulaire (20) formé par les parois de canal (21a, 21b) avec une hauteur constante (H) en aval des générateurs de tourbillons (9) et de l'injection de combustible est comprise entre 5 et 20 fois sa hauteur (H) et
    le canal d'écoulement principal annulaire (20) s'élargit ensuite en un canal d'écoulement principal circulaire par la fermeture de la paroi cylindrique intérieure (21a).
  2. Brûleur à prémélange suivant la revendication 1, caractérisé en ce que le canal d'écoulement principal s'élargit progressivement.
  3. Brûleur à prémélange suivant la revendication 1, caractérisé en ce que le canal d'écoulement principal s'élargit brusquement.
  4. Brûleur à prémélange suivant la revendication 1, caractérisé en ce que
    un générateur de tourbillons (9) présente trois faces librement balayées (10, 11, 13), qui s'étendent dans le sens de l'écoulement et dont l'une forme la face de toit (10) et les deux autres les faces latérales (11, 13),
    les faces latérales (11, 13) sont jointives à une même paroi (21) du canal et une face latérale (11) est inclinée d'un demi-angle de flèche (α/2), tandis que l'autre face latérale (13) est rectiligne et orientée dans le sens de l'écoulement,
    la face de toit (10) s'applique par une arête (15) orientée transversalement au canal parcouru (20) sur la même paroi de canal (21) que les faces latérales (11, 13),
    et les arêtes longitudinales (12, 14) de la face de toit (10), qui sont jointives aux arêtes longitudinales des faces latérales (11, 13) pénétrant dans le canal d'écoulement (20) sont inclinées d'un angle d'incidence () vers la paroi de canal (21).
  5. Brûleur à prémélange suivant la revendication 4, caractérisé en ce que les deux faces latérales (11, 13) entourent l'une avec l'autre une arête de jonction (16), qui forme avec les arêtes longitudinales (12, 14) de la face de toit (10) une pointe (18), et en ce que l'arête de jonction se trouve en position radiale sur la paroi de canal courbe (21).
  6. Brûleur à prémélange suivant la revendication 4, caractérisé en ce que l'arête de jonction (16) et/ou les arêtes longitudinales (12, 14) de la face de toit sont au moins approximativement des arêtes vives.
  7. Brûleur à prémélange suivant la revendication 6, caractérisé en ce que l'arête de jonction (16) forme l'arête aval du générateur de tourbillons (9) et l'arête (15) de la face de toit (10) orientée transversalement au canal parcouru (20) est l'arête atteinte en premier lieu par l'écoulement principal.
  8. Brûleur à prémélange suivant la revendication 1, caractérisé en ce que les générateurs de tourbillons (9a) présentent à peau près la forme d'un triangle rectangle de faible épaisseur, les deux faces latérales triangulaires balayées (11, 13) sont parallèles l'une à l'autre et entourent avec la face de toit (10) la face de jonction (19), dans lequel la face de toit (10) avec une arête (15) et la face de jonction (19) avec une arête (17) s'appliquent sur la même paroi de canal que les deux faces latérales (11, 13) et les faces latérales (11, 13) forment un angle (β) avec le sens d'écoulement principal de l'air entrant.
  9. Brûleur à prémélange suivant la revendication 8, caractérisé en ce que les faces latérales (11, 13) des générateurs de tourbillons (9a) sont de forme trapézoïdale.
  10. Brûleur à prémélange suivant la revendication 8, caractérisé en ce que la face de toit (10) est de forme convexe ou concave.
  11. Brûleur suivant la revendication 8 ou 9, caractérisé en ce que la face de jonction (19) forme la face aval du générateur de tourbillons (9a) et l'arête (15) de la face de toit (10) orientée transversalement au canal parcouru (20) est l'arête atteinte en premier lieu par l'écoulement principal.
  12. Brûleur à prémélange suivant l'une des revendications 4, 8 ou 9, caractérisé en ce que la hauteur (h) du générateur de tourbillons (9, 9a) correspond à la hauteur (H) du canal (20).
  13. Brûleur à prémélange suivant la revendication 4 ou 9, caractérisé en ce qu'un même nombre de générateurs de tourbillons (9, 9a) sont disposés sur la paroi intérieure (21a) du canal et sur la paroi extérieure (21b) du canal, deux générateurs de tourbillons (9, 9a) opposés étant chaque fois décalés d'un demi-pas.
  14. Brûleur à prémélange suivant la revendication 4 ou 9, caractérisé en ce qu'un même nombre de générateurs de tourbillons (9, 9a) sont disposés sur la paroi intérieure (21a) du canal et sur la paroi extérieure (21b) du canal, les générateurs de tourbillons (9, 9a) intérieurs et ceux extérieurs présentant une géométrie différente.
  15. Brûleur à prémélange suivant la revendication 1, caractérisé en ce qu'un combustible gazeux est injecté par des ouvertures pratiquées dans la paroi intérieure et/ou extérieure (21a, 21b) du canal en aval des générateurs de tourbillons (9, 9a).
  16. Brûleur à prémélange suivant la revendication 1, caractérisé en ce qu'un combustible liquide est injecté par une lance disposée en aval des générateurs de tourbillons (9, 9a).
  17. Brûleur à prémélange suivant la revendication 15 ou 16, caractérisé en ce qu'un combustible liquide est injecté en plus à la fin du cylindre intérieur.
EP96810756A 1995-11-23 1996-11-07 Brûleur à prémélange Expired - Lifetime EP0775869B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19543701 1995-11-23
DE19543701A DE19543701A1 (de) 1995-11-23 1995-11-23 Vormischbrenner

Publications (3)

Publication Number Publication Date
EP0775869A2 EP0775869A2 (fr) 1997-05-28
EP0775869A3 EP0775869A3 (fr) 1998-03-11
EP0775869B1 true EP0775869B1 (fr) 2001-09-05

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EP96810756A Expired - Lifetime EP0775869B1 (fr) 1995-11-23 1996-11-07 Brûleur à prémélange

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US (1) US5791892A (fr)
EP (1) EP0775869B1 (fr)
JP (1) JPH09170729A (fr)
DE (2) DE19543701A1 (fr)

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DE10250208A1 (de) * 2002-10-28 2004-06-03 Rolls-Royce Deutschland Ltd & Co Kg Vorrichtung zur Flammenstabilisierung für mager vorgemischte Brenner für Flüssigbrennstoff in Gasturbinenbrennkammern mittels Turbolatorelementen im Hauptstrom
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KR100988836B1 (ko) * 2008-05-16 2010-10-20 이재랑 업소용 가스버너
JP6017453B2 (ja) * 2011-01-20 2016-11-02 キャスケイド デザインズ インコーポレイテッド 燃料および酸化剤を同時に計量するための燃料および酸化剤の複合型計量ジェット、システムおよび方法
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JPH09170729A (ja) 1997-06-30
DE59607621D1 (de) 2001-10-11
DE19543701A1 (de) 1997-05-28
EP0775869A2 (fr) 1997-05-28
EP0775869A3 (fr) 1998-03-11
US5791892A (en) 1998-08-11

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