EP1431658A1 - Compact gas burner with internal flame - Google Patents

Compact gas burner with internal flame Download PDF

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Publication number
EP1431658A1
EP1431658A1 EP03292923A EP03292923A EP1431658A1 EP 1431658 A1 EP1431658 A1 EP 1431658A1 EP 03292923 A EP03292923 A EP 03292923A EP 03292923 A EP03292923 A EP 03292923A EP 1431658 A1 EP1431658 A1 EP 1431658A1
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EP
European Patent Office
Prior art keywords
tube
chamber
gas burner
internal
burner according
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Granted
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EP03292923A
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German (de)
French (fr)
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EP1431658B1 (en
Inventor
Jean-Claude Molla
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Engie SA
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Gaz de France SA
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    • 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 gas burners called "internal flame", that is to say whose flames converge at a point of heat concentration.
  • the invention relates to a gas burner internal flame, comprising a gas injector, a vacuum tube, or venturi, ensuring induction primary air, a pot, and a cap, the cap styling the pot and delimiting jointly with the pot an annular chamber for distributing a mixture air and gas fuel, the chamber having a internal edge that surrounds the center of this room and which is pierced with flame outlets, and the vacuum tube with an open air inlet atmospheric, first and second sections longitudinal profiles respectively converge and diverge, and an outlet leading into the annular chamber, the first section taking birth at the entrance of the tube, the second section succeeding the first section and ending at the outlet of the tube, and the injector being relatively more closer to the inlet of the vacuum tube than the exit from this tube.
  • Gas burners such as those fitted traditionally cooktops and professional stoves are designed so that the combustible mixture is allowed in the room annular by an upward movement, and belong the type of burners called "external flame", in which the flames diverge radially towards outside.
  • Burners of this type inherently have interesting properties in terms of power modulation dynamics, energy efficiency, and loss reduction calorific, the modulation dynamics being represented by the ratio of the greatest flow likely to be achieved while retaining a hygienic combustion and a flame stuck to the orifice outlet, at the lowest flow rate likely to be reached without flashback in this orifice exit.
  • the invention aims to provide a self-designed internal flame burner by compared to internal flame burners, and therefore free limitations attributable to these.
  • the gas burner of the invention by elsewhere conforms to the generic definition given by it the preamble above, is essentially characterized in that the vacuum tube extends longitudinally along a substantially inscribed axis in a median plane of the annular chamber, and in this that this tube has a length at most equal to double the greatest distance from the edge internal chamber of the center of this chamber.
  • the burner of the invention despite its very small footprint, has excellent performance.
  • the internal 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 internal edge.
  • the tube opens into the chamber in a direction radial with respect to the internal edge thereof, and this room is equipped with a distribution baffle of the combustible mixture, shaped in an arc of a circle and interposed between the outlet of the tube and some at least flame exit ports arranged opposite this exit.
  • This chicane advantageously occupies part only from the height of the room, and is arranged closer to the hat than the pot.
  • the outlet of the tube has respectively, in the midplane and perpendicular to the median plane, a width and a height, the height being less than the width.
  • the second section of the tube present, perpendicularly in the median plane, a substantially constant height up to the exit of the tube.
  • the second section of the tube and the chamber can then present, perpendicular to the median plane, substantially equal heights.
  • the gas burner of the invention can also include a device for holding the injector, itself including a gas inlet pipe, a plate, and a bracket, the injector being mounted at a free end of the gas inlet pipe, the plate being integral with the vacuum tube and having a opening opposite the entry of this tube, and the stirrup being integral with the plate and supporting the conduit gas inlet remote from the opening of the platinum.
  • a device for holding the injector itself including a gas inlet pipe, a plate, and a bracket, the injector being mounted at a free end of the gas inlet pipe, the plate being integral with the vacuum tube and having a opening opposite the entry of this tube, and the stirrup being integral with the plate and supporting the conduit gas inlet remote from the opening of the platinum.
  • the injector preferably opens into the first section of the vacuum tube.
  • the vacuum tube can be formed of two substantially symmetrical parts of each other by relation to the median plane of the annular chamber.
  • the invention relates to a 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” has for role of ensuring a primary air induction of combustion, this induction of air, or aspiration, resulting from the depression caused in tube 2 by the gas leaving the injector 1, and accompanied by turbulence by which the primary air mixes gas.
  • the cap 4 covers the pot 3 and delimits, jointly with this pot 3, an annular chamber 5 whose edge internal 51 surrounds the center 50 of this chamber, and has 510 flame outlet ports.
  • 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 starts at entry 20 of the tube 2 and has a converging profile.
  • the second section 22 succeeds the first section 21, has a divergent profile, and ends at the exit 23 of the tube.
  • the injector 1 is arranged at a larger near the inlet 20 of the vacuum tube 2 than the outlet 23 of this tube.
  • the vacuum tube 2 extends longitudinally along an X axis 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 twice the greatest distance R separating the internal edge 51 of chamber 5 from the center 50 from this room.
  • the length L2 of the tube 2 is therefore at most equal to twice the radius R of this edge internal 51, i.e. the diameter of this same edge 51.
  • the tube vacuum 2 opens into chamber 5 along a radial direction with respect to the internal edge 51 of this room.
  • the bedroom 5 is equipped with a baffle 6, shaped as an arc of circle and interposed between the outlet 23 of the tube 2 and those of the flame exit ports 510 which are arranged opposite this outlet 23.
  • the baffle 6 is for example fixed to the cap 4 (figure 4) and in any case preferably arranged closer to the hat 4 as pot 3, this chicane occupying only one only part of the height H5 of the room.
  • the width L23 of the outlet 23 of the tube 2 that is to say the dimension presented by this output 23 in the median plane P of chamber 5, is greater than the height H2 of this outlet 23, that is to say at the dimension of outlet 23 of tube 2 perpendicular to the median plane P of chamber 5.
  • the width L23 of the outlet 23 of the tube 2 is almost twice the height H2 of this exit.
  • the second section 22 of the vacuum tube 2 can have, perpendicularly at the median plane P, a substantially constant height up 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 bedroom 5.
  • the internal flame gas burner of the invention further includes a device 7 for maintaining injector 1, this device itself including a gas inlet duct 71, a plate 72, and a stirrup 73.
  • the injector is mounted at the free end 710 of the gas inlet pipe 71, this pipe being maintained by stirrup 73.
  • the plate 72 is integral with the vacuum tube 2 and presents, opposite the inlet 20 of this tube 2, a 720 opening which promotes air circulation primary in tube 2.
  • the stirrup 73 which is integral with the plate 72, supports the gas inlet pipe 71 away from the opening of the plate 72, thus releasing this opening to further promote air circulation.
  • the injector 1 opens into the first section 21 of the tube depression 2, very close to the connection area of 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 one of the other with respect to the median plane P of the room ring finger 5.

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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)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)

Abstract

The burner has a depression tube (2) stretching longitudinally following an axis approximately in a median plane of an annular distribution chamber (5) that mixes the combustible air and the gas. The tube has a length exactly equal to the double of the distance (R) separating an internal edge (51) of the chamber from the center (50) of the chamber.

Description

L'invention concerne, de façon générale, le domaine des brûleurs à gaz dits "à flamme interne", c'est-à-dire dont les flammes convergent vers un point de concentration de chaleur.The invention relates generally to the field of gas burners called "internal flame", that is to say whose flames converge at a point of heat concentration.

Plus précisément, l'invention concerne un brûleur à gaz à flamme interne, comprenant un injecteur de gaz, un tube à dépression, ou venturi, assurant une induction d'air primaire, un pot, et un chapeau, le chapeau coiffant le pot et délimitant conjointement avec le pot une chambre annulaire de distribution d'un mélange combustible d'air et de gaz, la chambre présentant un bord interne qui entoure le centre de cette chambre et qui est percé d'orifices de sortie de flammes, et le tube à dépression présentant une entrée ouverte à l'air atmosphérique, des première et seconde sections longitudinales présentant respectivement des profils convergent et divergent, et une sortie débouchant dans la chambre annulaire, la première section prenant naissance à l'entrée du tube, la seconde section succédant à la première section et se terminant à la sortie du tube, et l'injecteur étant relativement plus proche de l'entrée du tube à dépression que de la sortie de ce tube.More specifically, the invention relates to a gas burner internal flame, comprising a gas injector, a vacuum tube, or venturi, ensuring induction primary air, a pot, and a cap, the cap styling the pot and delimiting jointly with the pot an annular chamber for distributing a mixture air and gas fuel, the chamber having a internal edge that surrounds the center of this room and which is pierced with flame outlets, and the vacuum tube with an open air inlet atmospheric, first and second sections longitudinal profiles respectively converge and diverge, and an outlet leading into the annular chamber, the first section taking birth at the entrance of the tube, the second section succeeding the first section and ending at the outlet of the tube, and the injector being relatively more closer to the inlet of the vacuum tube than the exit from this tube.

Les brûleurs à gaz tels que ceux qui équipent traditionnellement les tables de cuisson et les fourneaux professionnels sont conçus de manière que le mélange combustible soit admis dans la chambre annulaire par un mouvement ascendant, et appartiennent au type de brûleurs dits "à flamme externe", dans lesquels les flammes divergent radialement vers l'extérieur.Gas burners such as those fitted traditionally cooktops and professional stoves are designed so that the combustible mixture is allowed in the room annular by an upward movement, and belong the type of burners called "external flame", in which the flames diverge radially towards outside.

En termes de performance, de fiabilité, et de viabilité économique, ces brûleurs donnent des résultats globalement assez satisfaisants, mais néanmoins susceptibles d'être optimisés et obtenus au prix d'un encombrement important.In terms of performance, reliability, and viability economical, these burners work overall quite satisfactory, but nevertheless likely to be optimized and obtained at the cost of significant bulk.

Des développements plus récents ont conduit à l'apparition de brûleurs du type dit "à flamme interne" tel que précédemment défini, c'est-à-dire dans lesquels les flammes convergent vers un point central.More recent developments have led to the appearance of burners of the so-called "internal flame" type as previously defined, i.e. in which the flames converge at a central point.

Les brûleurs de ce type, par exemple décrits dans les documents de brevets JP-11-211089 et JP-2000-97409, présentent intrinsèquement d'intéressantes propriétés en termes de dynamique de modulation de puissance, de rendement énergétique, et de réduction des pertes calorifiques, la dynamique de modulation étant représentée par le rapport du plus grand débit susceptible d'être atteint tout en conservant une combustion hygiénique et une flamme collée à l'orifice de sortie, au plus petit débit susceptible d'être atteint sans retour de flamme dans cet orifice de sortie.Burners of this type, for example described in patent documents JP-11-211089 and JP-2000-97409, inherently have interesting properties in terms of power modulation dynamics, energy efficiency, and loss reduction calorific, the modulation dynamics being represented by the ratio of the greatest flow likely to be achieved while retaining a hygienic combustion and a flame stuck to the orifice outlet, at the lowest flow rate likely to be reached without flashback in this orifice exit.

Bien que structurellement différents des brûleurs à flamme externe, les brûleurs à flamme interne restent cependant dérivés des premiers par l'application de principes de conception traditionnels, et héritent donc d'une partie des caractéristiques de ces premiers brûleurs. Although structurally different from external flame, internal flame burners remain however derived from the former by the application of traditional design principles, and therefore inherit of some of the characteristics of these early burners.

Dans ce contexte, l'invention a pour but de proposer un brûleur à flamme interne de conception autonome par rapport aux brûleurs à flamme interne, et donc exempt des limitations attribuables à ces derniers.In this context, the invention aims to provide a self-designed internal flame burner by compared to internal flame burners, and therefore free limitations attributable to these.

A cette fin, le brûleur à gaz de l'invention, par ailleurs conforme à la définition générique qu'en donne le préambule ci-dessus, est essentiellement caractérisé en ce que le tube à dépression s'étend longitudinalement suivant un axe sensiblement inscrit dans un plan médian de la chambre annulaire, et en ce que ce tube présente une longueur au plus égale au double de la plus grande distance séparant le bord interne de la chambre du centre de cette chambre.To this end, the gas burner of the invention, by elsewhere conforms to the generic definition given by it the preamble above, is essentially characterized in that the vacuum tube extends longitudinally along a substantially inscribed axis in a median plane of the annular chamber, and in this that this tube has a length at most equal to double the greatest distance from the edge internal chamber of the center of this chamber.

Alors que de telles dimensions n'étaient a priori pas envisageables pour l'homme de métier, le brûleur de l'invention, en dépit de son très faible encombrement, présente d'excellentes performances.While such dimensions were a priori not possible for the skilled person, the burner of the invention, despite its very small footprint, has excellent performance.

Le bord interne de la chambre annulaire est par exemple circulaire, la longueur du tube étant alors au plus égale au diamètre du bord interne de la chambre, ou même au plus égale au rayon de ce bord interne.The internal 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 internal edge.

Dans le mode de réalisation préféré de l'invention, le tube débouche dans la chambre suivant une direction radiale par rapport au bord interne de celle-ci, et cette chambre est équipée d'une chicane de répartition du mélange combustible, conformée en arc de cercle et interposée entre la sortie du tube et certains au moins des orifices de sortie de flammes disposés en regard de cette sortie. In the preferred embodiment of the invention, the tube opens into the chamber in a direction radial with respect to the internal edge thereof, and this room is equipped with a distribution baffle of the combustible mixture, shaped in an arc of a circle and interposed between the outlet of the tube and some at least flame exit ports arranged opposite this exit.

Cette chicane occupe avantageusement une partie seulement de la hauteur de la chambre, et est disposée plus près du chapeau que du pot.This chicane advantageously occupies part only from the height of the room, and is arranged closer to the hat than the pot.

De préférence, la sortie du tube présente respectivement, dans le plan médian et perpendiculairement au plan médian, une largeur et une hauteur, la hauteur étant inférieure à la largeur.Preferably, the outlet of the tube has respectively, in the midplane and perpendicular to the median plane, a width and a height, the height being less than the width.

Dans ce cas, il est avantageux de prévoir que la seconde section du tube présente, perpendiculairement au plan médian, une hauteur sensiblement constante jusqu'à la sortie du tube.In this case, it is advantageous to provide that the second section of the tube present, perpendicularly in the median plane, a substantially constant height up to the exit of the tube.

La seconde section du tube et la chambre peuvent alors présenter, perpendiculairement au plan médian, des hauteurs sensiblement égales.The second section of the tube and the chamber can then present, perpendicular to the median plane, substantially equal heights.

Le brûleur à gaz de l'invention peut par ailleurs comprendre un dispositif de maintien de l'injecteur, incluant lui-même un conduit d'arrivée de gaz, une platine, et un étrier, l'injecteur étant monté à une extrémité libre du conduit d'arrivée de gaz, la platine étant solidaire du tube à dépression et présentant une ouverture en regard de l'entrée de ce tube, et l'étrier étant solidaire de la platine et supportant le conduit d'arrivée de gaz à distance de l'ouverture de la platine.The gas burner of the invention can also include a device for holding the injector, itself including a gas inlet pipe, a plate, and a bracket, the injector being mounted at a free end of the gas inlet pipe, the plate being integral with the vacuum tube and having a opening opposite the entry of this tube, and the stirrup being integral with the plate and supporting the conduit gas inlet remote from the opening of the platinum.

L'injecteur débouche de préférence dans la première section du tube à dépression. The injector preferably opens into the first section of the vacuum tube.

Enfin, le tube à dépression peut être formé de deux parties sensiblement symétriques l'une de l'autre par rapport au plan médian de la chambre annulaire.Finally, the vacuum tube can be formed of two substantially symmetrical parts of each other by relation to the median plane of the annular chamber.

D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :

  • la figure 1 est une vue en perspective partiellement éclatée d'un brûleur conforme à l'invention ;
  • la figure 2 est une vue en perspective d'un brûleur conforme à l'invention, représenté complet et observé du côté de son injecteur ;
  • la figure 3 est une vue en perspective d'un brûleur conforme à l'invention, observé avant montage de son chapeau et de la moitié supérieure de son tube à dépression ;
  • la figure 4 est une vue en coupe d'un brûleur conforme à l'invention, la coupe étant réalisée suivant un plan contenant l'axe du tube à dépression et perpendiculaire au plan médian de la chambre annulaire ;
  • la figure 5 est une vue en perspective de la moitié inférieure du tube à dépression d'un brûleur conforme à l'invention, observé du côté de sa sortie ;
  • la figure 6 est une vue en perspective de la moitié inférieure du tube à dépression d'un brûleur conforme à l'invention, observé du côté de son entrée ; et
  • la figure 7 est une vue en perspective du tube à dépression d'un brûleur conforme à l'invention, observé du côté de sa sortie.
Other characteristics and advantages of the invention will emerge clearly from the description given below, by way of indication and in no way limitative, with reference to the appended drawings, in which:
  • Figure 1 is a partially exploded perspective view of a burner according to the invention;
  • Figure 2 is a perspective view of a burner according to the invention, shown complete and observed from the side of its injector;
  • Figure 3 is a perspective view of a burner according to the invention, observed before mounting of its cap and the upper half of its vacuum tube;
  • Figure 4 is a sectional view of a burner according to the invention, the section being taken along a plane containing the axis of the vacuum tube and perpendicular to the median plane of the annular chamber;
  • Figure 5 is a perspective view of the lower half of the vacuum tube of a burner according to the invention, observed from the side of its outlet;
  • Figure 6 is a perspective view of the lower half of the vacuum tube of a burner according to the invention, observed from the side of its inlet; and
  • Figure 7 is a perspective view of the vacuum tube of a burner according to the invention, observed from the side of its outlet.

Comme annoncé précédemment, l'invention concerne un brûleur à gaz à flamme interne.As previously announced, the invention relates to a internal flame gas burner.

Comme le montrent les documents de brevets japonais précités, un tel brûleur comprend un injecteur de gaz 1, un tube à dépression 2, un pot 3, et un chapeau 4.As shown in Japanese patent documents mentioned above, such a burner comprises a gas injector 1, a vacuum tube 2, a pot 3, and a cap 4.

Le tube à dépression 2, encore appelé "venturi", a pour rôle d'assurer une induction d'air primaire de combustion, cette induction d'air, ou aspiration, résultant de la dépression provoquée dans le tube 2 par le gaz sortant de l'injecteur 1, et s'accompagnant de turbulences grâce auxquelles l'air primaire se mélange au gaz.The vacuum tube 2, also called "venturi", has for role of ensuring a primary air induction of combustion, this induction of air, or aspiration, resulting from the depression caused in tube 2 by the gas leaving the injector 1, and accompanied by turbulence by which the primary air mixes gas.

Le chapeau 4 coiffe le pot 3 et délimite, conjointement avec ce pot 3, une chambre annulaire 5 dont le bord interne 51 entoure le centre 50 de cette chambre, et présente des orifices 510 de sortie de flammes.The cap 4 covers the pot 3 and delimits, jointly with this pot 3, an annular chamber 5 whose edge internal 51 surrounds the center 50 of this chamber, and has 510 flame outlet ports.

L'air et le gaz en provenance du tube 2 finit de se mélanger de façon intime dans cette chambre 5, le mélange combustible qui en résulte se répartissant de façon homogène et étant distribué vers les orifices 510 de sortie de flammes, où il est enflammé et brûle avec un apport d'air secondaire environnant. The air and gas from tube 2 ends up intimately mix in this room 5, the resulting combustible mixture dividing from homogeneously and being distributed to orifices 510 flame outlet, where it ignites and burns with a supply of surrounding secondary air.

Le tube à dépression 2 présente une entrée 20 ouverte à l'air atmosphérique, une première section longitudinale 21, une seconde section longitudinale 22, et une sortie 23 débouchant dans la chambre annulaire 5.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.

La première section 21 prend naissance à l'entrée 20 du tube 2 et présente un profil convergent.The first section 21 starts at entry 20 of the tube 2 and has a converging profile.

La seconde section 22 succède à la première section 21, présente un profil divergent, et se termine à la sortie 23 du tube.The second section 22 succeeds the first section 21, has a divergent profile, and ends at the exit 23 of the tube.

Par ailleurs, l'injecteur 1 est disposé à plus grande proximité de l'entrée 20 du tube à dépression 2 que de la sortie 23 de ce tube.Furthermore, the injector 1 is arranged at a larger near the inlet 20 of the vacuum tube 2 than the outlet 23 of this tube.

Selon l'invention, d'une part le tube à dépression 2 s'étend longitudinalement suivant un axe X qui est sensiblement contenu dans le plan médian P de la chambre annulaire 5.According to the invention, on the one hand the vacuum tube 2 extends longitudinally along an X axis which is substantially contained in the median plane P of the annular chamber 5.

Et d'autre part, ce tube 2 présente une longueur L2 qui est au plus égale au double de la plus grande distance R séparant le bord interne 51 de la chambre 5 du centre 50 de cette chambre.And on the other hand, this tube 2 has a length L2 which is at most twice the greatest distance R separating the internal edge 51 of chamber 5 from the center 50 from this room.

Dans le cas préféré où le bord interne 51 de la chambre annulaire 5 est circulaire, la longueur L2 du tube 2 est donc au plus égale au double du rayon R de ce bord interne 51, c'est-à-dire au diamètre de ce même bord 51. In the preferred case where the internal edge 51 of the chamber annular 5 is circular, the length L2 of the tube 2 is therefore at most equal to twice the radius R of this edge internal 51, i.e. the diameter of this same edge 51.

En pratique, il est même avantageux de donner au tube 2 une longueur L2 au plus égale au rayon R du bord interne 51 de la chambre 5.In practice, it is even advantageous to give the tube 2 a length L2 at most equal to the radius R of the edge internal 51 of chamber 5.

Comme le montrent notamment les figures 3 et 4, le tube à dépression 2 débouche dans la chambre 5 suivant une direction radiale par rapport au bord interne 51 de cette chambre.As shown in particular in Figures 3 and 4, the tube vacuum 2 opens into chamber 5 along a radial direction with respect to the internal edge 51 of this room.

Pour obtenir une distribution homogène du mélange combustible vers les différents orifices 510, la chambre 5 est équipée d'une chicane 6, conformée en arc de cercle et interposée entre la sortie 23 du tube 2 et ceux des orifices 510 de sortie de flammes qui sont disposés en regard de cette sortie 23.To obtain a homogeneous distribution of the mixture fuel to the various orifices 510, the bedroom 5 is equipped with a baffle 6, shaped as an arc of circle and interposed between the outlet 23 of the tube 2 and those of the flame exit ports 510 which are arranged opposite this outlet 23.

La chicane 6 est par exemple fixée au chapeau 4 (figure 4) et en tout cas disposée de préférence plus près du chapeau 4 que du pot 3, cette chicane n'occupant qu'une partie seulement de la hauteur H5 de la chambre.The baffle 6 is for example fixed to the cap 4 (figure 4) and in any case preferably arranged closer to the hat 4 as pot 3, this chicane occupying only one only part of the height H5 of the room.

Selon un aspect très avantageux de l'invention (figure 7), la largeur L23 de la sortie 23 du tube 2, c'est-à-dire la dimension que présente cette sortie 23 dans le plan médian P de la chambre 5, est supérieure à la hauteur H2 de cette sortie 23, c'est-à-dire à la dimension que présente la sortie 23 du tube 2 perpendiculairement au plan médian P de la chambre 5.According to a very advantageous aspect of the invention (Figure 7), the width L23 of the outlet 23 of the tube 2, that is to say the dimension presented by this output 23 in the median plane P of chamber 5, is greater than the height H2 of this outlet 23, that is to say at the dimension of outlet 23 of tube 2 perpendicular to the median plane P of chamber 5.

Concrètement, la largeur L23 de la sortie 23 du tube 2 est pratiquement égale au double de la hauteur H2 de cette sortie. Concretely, the width L23 of the outlet 23 of the tube 2 is almost twice the height H2 of this exit.

Comme le montre la figure 5, la seconde section 22 du tube à dépression 2 peut présenter, perpendiculairement au plan médian P, une hauteur sensiblement constante jusqu'à la sortie 23 du tube, et donc égale à la hauteur H2 de cette sortie 23.As shown in Figure 5, the second section 22 of the vacuum tube 2 can have, perpendicularly at the median plane P, a substantially constant height up to the outlet 23 of the tube, and therefore equal to the height H2 of this outlet 23.

En outre, la hauteur H2 de la seconde section 22 du tube 2 (figure 4) est avantageusement égale à la hauteur H5 de la chambre 5.In addition, the height H2 of the second section 22 of the tube 2 (Figure 4) is advantageously equal to the height H5 of bedroom 5.

Le brûleur à gaz à flamme interne de l'invention comprend par ailleurs un dispositif 7 de maintien de l'injecteur 1, ce dispositif incluant lui-même un conduit 71 d'arrivée de gaz, une platine 72, et un étrier 73.The internal flame gas burner of the invention further includes a device 7 for maintaining injector 1, this device itself including a gas inlet duct 71, a plate 72, and a stirrup 73.

L'injecteur est monté à l'extrémité libre 710 du conduit 71 d'arrivée de gaz, ce conduit étant maintenu par l'étrier 73.The injector is mounted at the free end 710 of the gas inlet pipe 71, this pipe being maintained by stirrup 73.

La platine 72 est solidaire du tube à dépression 2 et présente, en regard de l'entrée 20 de ce tube 2, une ouverture 720 qui favorise la circulation d'air primaire dans le tube 2.The plate 72 is integral with the vacuum tube 2 and presents, opposite the inlet 20 of this tube 2, a 720 opening which promotes air circulation primary in tube 2.

L'étrier 73, qui est solidaire de la platine 72, supporte le conduit 71 d'arrivée de gaz à distance de l'ouverture de la platine 72, dégageant ainsi cette ouverture pour favoriser encore la circulation d'air.The stirrup 73, which is integral with the plate 72, supports the gas inlet pipe 71 away from the opening of the plate 72, thus releasing this opening to further promote air circulation.

Comme le montre le mieux la figure 4, l'injecteur 1 débouche dans la première section 21 du tube à dépression 2, tout près de la zone de raccordement des première et seconde sections. As best shown in Figure 4, the injector 1 opens into the first section 21 of the tube depression 2, very close to the connection area of first and second sections.

Enfin, comme le montrent le mieux les figures 5 à 7, le tube à dépression 2 est avantageusement formé d'un empilement de deux parties 2A et 2B, ces deux parties pouvant donc être sensiblement symétriques l'une de l'autre par rapport au plan médian P de la chambre annulaire 5.Finally, as best shown in Figures 5 to 7, the vacuum tube 2 is advantageously formed of a stack of two parts 2A and 2B, these two parts can therefore be substantially symmetrical one of the other with respect to the median plane P of the room ring finger 5.

Claims (12)

Brûleur à gaz à flamme interne, comprenant un injecteur de gaz (1), un tube à dépression (2), ou venturi, assurant une induction d'air primaire, un pot (3), et un chapeau (4), le chapeau coiffant le pot et délimitant conjointement avec le pot une chambre annulaire (5) de distribution d'un mélange combustible d'air et de gaz, la chambre (5) présentant un bord interne (51) qui entoure le centre (50) de cette chambre et qui est percé d'orifices (510) de sortie de flammes, et le tube à dépression (2) présentant une entrée (20) ouverte à l'air atmosphérique, des première et seconde sections longitudinales (21, 22) présentant respectivement des profils convergent et divergent, et une sortie (23) débouchant dans la chambre annulaire (5), la première section (21) prenant naissance à l'entrée (20) du tube (2), la seconde section (22) succédant à la première section (21) et se terminant à la sortie (23) du tube, et l'injecteur (1) étant relativement plus proche de l'entrée (20) du tube à dépression (2) que de la sortie (23) de ce tube, caractérisé en ce que le tube à dépression (2) s'étend longitudinalement suivant un axe (X) sensiblement inscrit dans un plan médian (P) de la chambre annulaire (5), et en ce que ce tube (2) présente une longueur (L2) au plus égale au double de la plus grande distance (R) séparant le bord interne (51) de la chambre (5) du centre (50) de cette chambre.Internal flame gas burner, comprising a gas injector (1), a vacuum tube (2), or venturi, ensuring primary air induction, a pot (3), and a cap (4), the cap covering the pot and delimiting jointly with the pot an annular chamber (5) for dispensing a combustible mixture of air and gas, the chamber (5) having an internal edge (51) which surrounds the center (50) of this chamber and which is pierced with flame exit orifices (510), and the vacuum tube (2) having an inlet (20) open to atmospheric air, first and second longitudinal sections (21, 22) having respectively convergent and divergent profiles, and an outlet (23) opening into the annular chamber (5), the first section (21) originating at the inlet (20) of the tube (2), the second section (22) succeeding the first section (21) and ending at the outlet (23) of the tube, and the injector (1) being relatively closer to the ent ree (20) of the vacuum tube (2) as the outlet (23) of this tube, characterized in that the vacuum tube (2) extends longitudinally along an axis (X) substantially inscribed in a median plane ( P) of the annular chamber (5), and in that this tube (2) has a length (L2) at most equal to twice the greatest distance (R) separating the internal edge (51) of the chamber (5 ) from the center (50) of this room. Brûleur à gaz à flamme interne suivant la revendication 1, caractérisé en ce que le bord interne (51) de la chambre annulaire (5) est circulaire Internal flame gas burner according to claim 1, characterized in that the internal edge (51) of the annular chamber (5) is circular Brûleur à gaz à flamme interne suivant la revendication 2, caractérisé en ce que la longueur (L2) du tube (2) est au plus égale au diamètre (2.R) du bord interne (51) de la chambre (5).Internal flame gas burner according to claim 2, characterized in that the length (L2) of the tube (2) is at most equal to the diameter (2.R) of the internal edge (51) of the chamber (5). Brûleur à gaz à flamme interne suivant la revendication 2 ou 3, caractérisé en ce que la longueur (L2) du tube (2) est au plus égale au rayon (R) du bord interne (51) de la chambre (5).Internal flame gas burner according to claim 2 or 3, characterized in that the length (L2) of the tube (2) is at most equal to the radius (R) of the internal edge (51) of the chamber (5). Brûleur à gaz à flamme interne suivant l'une quelconque des revendications 2 à 4, caractérisé en ce que le tube (2) débouche dans la chambre (5) suivant une direction radiale par rapport au bord interne (51) de celle-ci, et en ce que cette chambre (5) est équipée d'une chicane (6) de répartition du mélange combustible, conformée en arc de cercle et interposée entre la sortie (23) du tube (2) et certains au moins des orifices (510) de sortie de flammes disposés en regard de cette sortie (23).Internal flame gas burner according to any one of Claims 2 to 4, characterized in that the tube (2) opens into the chamber (5) in a radial direction relative to the internal edge (51) of the latter, and in that this chamber (5) is equipped with a baffle (6) for distributing the combustible mixture, shaped in an arc of a circle and interposed between the outlet (23) of the tube (2) and at least some of the orifices (510 ) flame outlet arranged opposite this outlet (23). Brûleur à gaz à flamme interne suivant l'une quelconque des revendications précédentes, caractérisé en ce que la sortie (23) du tube (2) présente respectivement, dans le plan médian (P) et perpendiculairement au plan médian (P), une largeur (L23) et une hauteur (H2), la hauteur (H2) étant inférieure à la largeur (L23).Internal flame gas burner according to any one of the preceding claims, characterized in that the outlet (23) of the tube (2) has respectively, in the median plane (P) and perpendicular to the median plane (P), a width (L23) and a height (H2), the height (H2) being less than the width (L23). Brûleur à gaz à flamme interne suivant la revendication 6, caractérisé en ce que la seconde section (22) du tube présente, perpendiculairement au plan médian (P), une hauteur (H2) sensiblement constante jusqu'à la sortie (23) du tube.Internal flame gas burner according to claim 6, characterized in that the second section (22) of the tube has, perpendicular to the median plane (P), a height (H2) substantially constant up to the outlet (23) of the tube . Brûleur à gaz à flamme interne suivant la revendication 7, caractérisé en ce que la seconde section (22) du tube (2) et la chambre (5) présentent, perpendiculairement au plan médian (P), des hauteurs (H2, H5) sensiblement égales.Internal flame gas burner according to claim 7, characterized in that the second section (22) of the tube (2) and the chamber (5) have heights (H2, H5), perpendicular to the median plane (P) equal. Brûleur à gaz à flamme interne suivant les revendications 5 et 8, caractérisé en ce que la chicane (6) occupe une partie seulement de la hauteur (H5) de la chambre, et est disposée plus près du chapeau (4) que du pot (3).Internal flame gas burner according to Claims 5 and 8, characterized in that the baffle (6) occupies only part of the height (H5) of the chamber, and is arranged closer to the cap (4) than to the pot ( 3). Brûleur à gaz à flamme interne suivant l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un dispositif (7) de maintien de l'injecteur (1), incluant lui-même un conduit (71) d'arrivée de gaz, une platine (72), et un étrier (73), l'injecteur étant monté à une extrémité libre (710) du conduit (71) d'arrivée de gaz, la platine (72) étant solidaire du tube à dépression (2) et présentant une ouverture (720) en regard de l'entrée (20) de ce tube (2), et l'étrier (73) étant solidaire de la platine (72) et supportant le conduit (71) d'arrivée de gaz à distance de l'ouverture de la platine (72).Internal flame gas burner according to any one of the preceding claims, characterized in that it comprises a device (7) for holding the injector (1), itself including a supply inlet duct (71) gas, a plate (72), and a bracket (73), the injector being mounted at a free end (710) of the gas inlet pipe (71), the plate (72) being integral with the vacuum tube ( 2) and having an opening (720) opposite the inlet (20) of this tube (2), and the stirrup (73) being integral with the plate (72) and supporting the inlet conduit (71) gas away from the opening of the plate (72). Brûleur à gaz à flamme interne suivant l'une quelconque des revendications précédentes, caractérisé en ce que l'injecteur (1) débouche dans la première section (21) du tube à dépression (2). Internal flame gas burner according to any one of the preceding claims, characterized in that the injector (1) opens into the first section (21) of the vacuum tube (2). Brûleur à gaz à flamme interne suivant l'une quelconque des revendications précédentes, caractérisé en ce que le tube à dépression (2) est formé de deux parties (2A, 2B) sensiblement symétriques l'une de l'autre par rapport au plan médian (P) de la chambre annulaire (5).Internal flame gas burner according to any one of the preceding claims, characterized in that the vacuum tube (2) is formed by two parts (2A, 2B) substantially symmetrical with each other with respect to the median plane (P) of the annular chamber (5).
EP03292923A 2002-12-17 2003-11-25 Compact gas burner with internal flame Expired - Lifetime EP1431658B1 (en)

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FR0216041A FR2848642B1 (en) 2002-12-17 2002-12-17 INTERNAL FLAME GAS BURNER OF HIGH COMPACITY
FR0216041 2002-12-17

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EP1431658B1 EP1431658B1 (en) 2010-11-10

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EP (1) EP1431658B1 (en)
AT (1) ATE487911T1 (en)
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CA2453007A1 (en) 2004-06-17
FR2848642B1 (en) 2005-08-05
ATE487911T1 (en) 2010-11-15
US7083123B2 (en) 2006-08-01
US20040195399A1 (en) 2004-10-07
DE60334883D1 (en) 2010-12-23
CA2453007C (en) 2012-04-17
FR2848642A1 (en) 2004-06-18
ES2355210T3 (en) 2011-03-23
EP1431658B1 (en) 2010-11-10

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