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EP1431658B1 - Kompakter Gasbrenner mit inneren Flammen - Google Patents

Kompakter Gasbrenner mit inneren Flammen Download PDF

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Publication number
EP1431658B1
EP1431658B1 EP03292923A EP03292923A EP1431658B1 EP 1431658 B1 EP1431658 B1 EP 1431658B1 EP 03292923 A EP03292923 A EP 03292923A EP 03292923 A EP03292923 A EP 03292923A EP 1431658 B1 EP1431658 B1 EP 1431658B1
Authority
EP
European Patent Office
Prior art keywords
tube
chamber
gas burner
outlet
internal
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
EP03292923A
Other languages
English (en)
French (fr)
Other versions
EP1431658A1 (de
Inventor
Jean-Claude Molla
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.)
Engie SA
Original Assignee
GDF Suez SA
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 GDF Suez SA filed Critical GDF Suez SA
Publication of EP1431658A1 publication Critical patent/EP1431658A1/de
Application granted granted Critical
Publication of EP1431658B1 publication Critical patent/EP1431658B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/085—Arrangement or mounting of burners on ranges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/06—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head

Definitions

  • the invention relates generally to the field of so-called "internal flame” gas burners, that is to say whose flames converge towards a point of heat concentration.
  • the invention relates to an internal flame gas burner, comprising a gas injector, a vacuum tube, or venturi, providing a primary air induction, a pot, and a hat, the cap on the pot and defining together with the pot an annular chamber for dispensing a combustible mixture of air and gas, the chamber having an inner edge which surrounds the center of this chamber and which is pierced with flame outlet orifices, and the tube with an open inlet to atmospheric air, first and second longitudinal sections respectively having convergent and divergent profiles, and an outlet opening into the annular chamber, the first section originating at the inlet of the tube, the second section succeeding the first section and ending at the outlet of the tube, the injector being relatively closer to the inlet of the vacuum tube than the outlet of this tube, and the vacuum tube extending longitudinally along an axis substantially inscribed in a median plane of the annular chamber.
  • a burner of this type is for example described in the patent document EP 1 489 353 .
  • a neighboring burner having some of the aforementioned characteristics, is furthermore described in the patent document JP 2000018523 .
  • Gas burners such as those traditionally used in cooktops and professional stoves are designed so that the combustible mixture is admitted into the annular chamber by an upward movement, and belong to the type of burners known as "external flame", in which the flames diverge radially outwards.
  • Burners of this type intrinsically have interesting properties in terms of power modulation dynamics, energy efficiency, and reduction of heat losses, the modulation dynamics being represented by the ratio of the largest flow rate likely to be reached while maintaining a hygienic combustion and a flame glued to the outlet orifice at the smallest flow rate that can be achieved without flashback in this outlet port.
  • the internal flame burners remain however derived from the first ones by the application of traditional design principles, and thus inherit some of the features of these first burners.
  • the object of the invention is to propose an internal flame burner of autonomous design with respect to the internal flame burners, and thus free from the limitations attributable to these.
  • the gas burner of the invention which moreover complies with the generic definition given in the preamble above, is essentially characterized in that the vacuum tube has a length at most equal to twice the greater distance separating the inner edge of the chamber from the center of this chamber in that the tube opens into the chamber in a radial direction relative to the inner edge thereof, and in that this chamber is equipped with a baffle distribution of the fuel mixture, shaped as an arc and interposed between the outlet of the tube and at least some of the flame outlet orifices arranged opposite this outlet.
  • the inner edge of the annular chamber is for example circular, the length of the tube then being at most equal to the diameter of the internal edge of the chamber, or even at most equal to the radius of this inner edge.
  • the baffle advantageously occupies only a portion of the height of the chamber, and is disposed closer to the bonnet than the pot.
  • the outlet of the tube has, respectively in the median plane and perpendicular to the median plane, a width and a height, the height being less than the width.
  • the second section of the tube has, perpendicular to the median plane, a substantially constant height to the outlet of the tube.
  • the second section of the tube and the chamber can then have, substantially perpendicular to the median plane, substantially equal heights.
  • the gas burner of the invention may furthermore comprise a device for holding the injector, itself including a gas inlet duct, a plate, and a stirrup, the injector being mounted at a free end of the nozzle. gas inlet pipe, the plate being secured to the vacuum tube and having an opening opposite the inlet of this tube, and the stirrup being secured to the plate and supporting the gas supply conduit at a distance of the opening of the stage.
  • the injector opens preferably into the first section of the vacuum tube.
  • the vacuum tube may be formed of two parts substantially symmetrical to each other with respect to the median plane of the annular chamber.
  • the invention relates to an internal flame gas burner.
  • such a burner comprises a gas injector 1, a vacuum tube 2, a pot 3, and a cap 4.
  • the vacuum tube 2 also called “venturi”
  • the vacuum tube 2 also called “venturi”
  • the cap 4 covers the pot 3 and delimits, together with the pot 3, an annular chamber 5 whose inner edge 51 surrounds the center 50 of the chamber, and has orifices 510 of flame outlet.
  • the vacuum tube 2 has an inlet 20 open to atmospheric air, a first longitudinal section 21, a second longitudinal section 22, and an outlet 23 opening into the annular chamber 5.
  • the first section 21 originates at the inlet 20 of the tube 2 and has a convergent profile.
  • the second section 22 succeeds the first section 21, has a divergent profile, and ends at the outlet 23 of the tube.
  • the injector 1 is disposed closer to the inlet 20 of the vacuum tube 2 than the outlet 23 of this tube.
  • the vacuum tube 2 extends longitudinally along an axis X which is substantially contained in the median plane P of the annular chamber 5.
  • this tube 2 has a length L2 which is at most equal to twice the largest distance R between the inner edge 51 of the chamber 5 of the center 50 of this chamber.
  • the length L2 of the tube 2 is at most equal to twice the radius R of this inner edge 51, that is to say to the diameter of this same edge 51.
  • the tube 2 a length L2 at most equal to the radius R of the inner edge 51 of the chamber 5.
  • the vacuum tube 2 opens into the chamber 5 in a radial direction relative to the inner edge 51 of this chamber.
  • the chamber 5 is equipped with a baffle 6, shaped in an arc of a circle and interposed between the outlet 23 of the tube 2 and those of the flame exit orifices 510 which are arranged opposite this exit 23.
  • the baffle 6 is for example fixed to the cap 4 ( figure 4 ) and in any case preferably disposed closer to the cap 4 than the pot 3, this baffle occupying only part of the height H5 of the chamber.
  • the width L23 of the outlet 23 of the tube 2 that is to say the dimension that this outlet 23 has in the median plane P of the chamber 5, is greater than the height H2 of this outlet 23, that is to say, the dimension that the outlet 23 of the tube 2 presents perpendicularly to the median plane P of the chamber 5.
  • the width L23 of the outlet 23 of the tube 2 is substantially equal to twice the height H2 of this output.
  • the second section 22 of the vacuum tube 2 may have, perpendicular to the median plane P, a substantially constant height to the outlet 23 of the tube, and therefore equal to the height H2 of this outlet 23.
  • the height H2 of the second section 22 of the tube 2 ( figure 4 ) is advantageously equal to the height H5 of the chamber 5.
  • the internal flame gas burner of the invention further comprises a device 7 for holding the injector 1, this device itself including a gas inlet pipe 71, a plate 72, and a stirrup 73.
  • the injector is mounted at the free end 710 of the gas inlet pipe 71, this duct being held by the stirrup 73.
  • the plate 72 is integral with the vacuum tube 2 and has, opposite the inlet 20 of this tube 2, an opening 720 which promotes the circulation of primary air in the tube 2.
  • the stirrup 73 which is integral with the plate 72, supports the conduit 71 gas inlet remote from the opening of the plate 72, thus releasing this opening to further promote the flow of air.
  • the injector 1 opens into the first section 21 of the vacuum tube 2, close to the connection area of the first and second sections.
  • the vacuum tube 2 is advantageously formed of a stack of two parts 2A and 2B, these two parts can therefore be substantially symmetrical to each other with respect to the median plane P of the annular chamber 5.

Landscapes

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

Claims (11)

  1. Gasbrenner mit Innenflamme, mit einem Gasinjektor (1), einem Unterdruck- oder Venturirohr (2), das eine primäre Lufteinführung sicherstellt, einem Tiegel (3) und einer Kappe (4), wobei die Kappe den Tiegel überdeckt und eine mit dem Tiegel verbundene Ringkammer (5) zur Verteilung eines brennbaren Gemisches aus Luft und Gas begrenzt, wobei die Kammer (5) einen Innenrand (51) aufweist, der das Zentrum (50) dieser Kammer umschließt und der durch Austrittsöffnungen (510) für Flammen durchbrochen ist, und wobei das Unterdruckrohr (2) einen für die Umgebungsluft offenen Eingang (20) aufweist, wobei ein erster und ein zweiter Abschnitt (21, 22) in Längsrichtung jeweils ein konvergierendes und ein divergierendes Profil aufweist, und einen Ausgang (23) aufweist, der in der Ringkammer (5) mündet, wobei der erste Abschnitt (21) am Eingang (20) des Rohrs (2) beginnt, wobei der zweite Abschnitt (22) dem ersten Abschnitt (21) folgt und am Ausgang (23) des Rohrs endet, wobei der Injektor (1) dem Eingang (20) des Unterdruckrohrs (2) relativ näher als dem Ausgang (23) dieses Rohrs ist, und wobei sich das Unterdruckrohr (2) in Längsrichtung entlang einer Achse (X) erstreckt, die im wesentlichen in einer Mittelebene (P) der Ringkammer (5) liegt, dadurch gekennzeichnet, dass dieses Rohr (2) eine Länge (L2) höchstens gleich dem Doppelten des größten Abstandes (R) aufweist, der den Innenrand (51) der Kammer (5) vom Zentrum (50) dieser Kammer trennt, dass das Rohr (2) in der Kammer (5) in einer radialen Richtung in Bezug zum Innenrand (51) derselben mündet, und dass diese Kammer (5) mit einem Hindernis (6) zur Verteilung des brennbaren Gemisches entsprechend einem Kreisbogen versehen ist und zwischen dem Ausgang (23) des Rohrs (2) und wenigstens einigen der Austrittsöffnungen (510) der Flammen, die gegenüber diesem Ausgang (23) angeordnet sind, angeordnet ist.
  2. Gasbrenner mit Innenflamme nach Anspruch 1, dadurch gekennzeichnet, dass der Innenrand (51) der Ringkammer (5) ringförmig ist.
  3. Gasbrenner mit Innenflamme nach Anspruch 2, dadurch gekennzeichnet, dass die Länge (L2) des Rohrs (2) höchstens gleich dem Durchmesser (2.R) des Innenrandes (51) der Kammer (5) ist.
  4. Gasbrenner mit Innenflamme nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Länge (L2) des Rohrs (2) höchstens gleich dem Radius (R) des Innenrandes (51) der Kammer (5) ist.
  5. Gasbrenner mit Innenflamme nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Ausgang (23) des Rohrs (2) in der Mittelebene (P) und senkrecht zur Mittelebene (P) jeweils eine Länge (L23) und eine Höhe (H2) aufweist, wobei die Höhe (H2) kleiner ist als die Länge (L23).
  6. Gasbrenner mit Innenflamme nach Anspruch 5, dadurch gekennzeichnet, dass der zweite Abschnitt (22) des Rohrs senkrecht zur Mittelebene (P) eine Höhe (H2) aufweist, die bis zum Ausgang (23) des Rohrs im Wesentlichen konstant ist.
  7. Gasbrenner mit Innenflamme nach Anspruch 6, dadurch gekennzeichnet, dass der zweite Abschnitt (22) des Rohrs (2) und die Kammer (5) senkrecht zur Mittelebene (P) im Wesentlichen gleiche Höhen (H2, H5) aufweisen.
  8. Gasbrenner mit Innenflamme nach Anspruch 7, dadurch gekennzeichnet, dass das Hindernis (6) nur einen Bereich der Höhe (H5) der Kammer besetzt und viel näher an der Kappe (4) als an dem Tiegel (3) angeordnet ist.
  9. Gasbrenner mit Innenflamme nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass dieser eine Halteeinrichtung (7) für den Injektor (1) aufweist, die selbst eine Gaszuführleitung (71), eine Platte (72) und einen Bügel (73) aufweist, wobei der Injektor an einem freien Ende (710) der Gaszuführleitung (71) angebracht ist, wobei die Platte (72) mit dem Unterdruckrohr (2) fest verbunden ist und eine Öffnung (720) gegenüber dem Eingang (20) dieses Rohrs (2) aufweist, und wobei der Bügel (73) mit der Platte (72) fest verbunden ist und die Gaszuführleitung (71) in Abstand zur Öffnung der Platte (72) trägt.
  10. Gasbrenner mit Innenflamme nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Injektor (1) in dem ersten Abschnitt (21) des Unterdruckrohrs (2) mündet.
  11. Gasbrenner mit Innenflamme nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Unterdruckrohr (2) aus zwei Teilen (2A, 2B) gebildet ist, die in Bezug zu der Mittelebene (P) der Ringkammer (5) im Wesentlichen symmetrisch zueinander sind.
EP03292923A 2002-12-17 2003-11-25 Kompakter Gasbrenner mit inneren Flammen Expired - Lifetime EP1431658B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0216041 2002-12-17
FR0216041A FR2848642B1 (fr) 2002-12-17 2002-12-17 Bruleur a gaz a flamme interne, de compacite elevee

Publications (2)

Publication Number Publication Date
EP1431658A1 EP1431658A1 (de) 2004-06-23
EP1431658B1 true EP1431658B1 (de) 2010-11-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03292923A Expired - Lifetime EP1431658B1 (de) 2002-12-17 2003-11-25 Kompakter Gasbrenner mit inneren Flammen

Country Status (7)

Country Link
US (1) US7083123B2 (de)
EP (1) EP1431658B1 (de)
AT (1) ATE487911T1 (de)
CA (1) CA2453007C (de)
DE (1) DE60334883D1 (de)
ES (1) ES2355210T3 (de)
FR (1) FR2848642B1 (de)

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Also Published As

Publication number Publication date
US7083123B2 (en) 2006-08-01
CA2453007A1 (fr) 2004-06-17
FR2848642B1 (fr) 2005-08-05
US20040195399A1 (en) 2004-10-07
ES2355210T3 (es) 2011-03-23
FR2848642A1 (fr) 2004-06-18
ATE487911T1 (de) 2010-11-15
DE60334883D1 (de) 2010-12-23
EP1431658A1 (de) 2004-06-23
CA2453007C (fr) 2012-04-17

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