EP0128809B1 - Gas burner of the premixing type with flame control, and use of this burner, especially in a submerged tube installation - Google Patents

Gas burner of the premixing type with flame control, and use of this burner, especially in a submerged tube installation Download PDF

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Publication number
EP0128809B1
EP0128809B1 EP84401101A EP84401101A EP0128809B1 EP 0128809 B1 EP0128809 B1 EP 0128809B1 EP 84401101 A EP84401101 A EP 84401101A EP 84401101 A EP84401101 A EP 84401101A EP 0128809 B1 EP0128809 B1 EP 0128809B1
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EP
European Patent Office
Prior art keywords
burner
flame
grid
air
connection piece
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
Application number
EP84401101A
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German (de)
French (fr)
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EP0128809A3 (en
EP0128809A2 (en
Inventor
Benoît Henri Fardeau
Claude Chapuis
Georges Austruy
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Engie SA
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Gaz de France SA
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Priority to AT84401101T priority Critical patent/ATE32136T1/en
Publication of EP0128809A2 publication Critical patent/EP0128809A2/en
Publication of EP0128809A3 publication Critical patent/EP0128809A3/en
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Publication of EP0128809B1 publication Critical patent/EP0128809B1/en
Expired legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/725—Protection against flame failure by using flame detection devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D91/00—Burners specially adapted for specific applications, not otherwise provided for
    • F23D91/02—Burners specially adapted for specific applications, not otherwise provided for for use in particular heating operations
    • F23D91/04—Burners specially adapted for specific applications, not otherwise provided for for use in particular heating operations for heating liquids, e.g. for vaporising or concentrating

Definitions

  • the present invention relates to improvements to a gas burner of the premix type and flame control.
  • This type of burner is commonly used in industry, allowing in particular high heating powers per unit area.
  • the gas burner of the premix and flame control type comprises an inlet of the air + fuel gas premix in a distribution chamber opening out through a flame stabilization grid in a combustion chamber, and a combustion cell. control of the burner flame placed behind a nozzle, which nozzle extends relative to the direction of flow of the fuel mixture behind the flame stabilization grid, the axis of said nozzle being directed substantially perpendicularly to said grid.
  • Document FR-A-2 274 869 also recommends placing the control cell behind a nozzle opening at the level of the stabilization grid and disposed substantially perpendicularly to the latter. It also provides, to avoid ignition of the burner due to possible flashbacks, to surround part of the nozzle with a cavity acting as a flameback detector.
  • the tip used is of the quartz and return prism type, which can cause problems in terms of detection by the cell in the event of condensation condensation and dirt deposits on the tip.
  • such a construction moreover not intended for installations with a submerged tube, does not allow the cell to be placed as close as possible to the flame so as to improve the reading, the latter then being able to be damaged by a return violent flame.
  • Document GB-A-491,714 teaches a burner in which a control cell is arranged towards the bottom of a nozzle and can be cooled by part of the combustion air supplying the burner.
  • this construction also does not effectively protect the cell against flashback by ensuring optimal positioning of this cell so as to improve detection and control security.
  • the cell is effectively protected whatever the flame instabilities that may arise and it can therefore be placed as close as possible to the flame of the burner to be checked.
  • the reading cell is thus protected by. the stabilization grid and by the distribution chamber interposed between it and said grid. It will be noted that this arrangement makes it possible, moreover, when the burner is intended to equip a submerged tube, to easily dispose the control cell outside the bath to be heated.
  • an ignition electrode is mounted through said distribution chamber opening out by its electrode suitably electrically isolated through said distribution grid and by its head connected to the power supply behind said chamber distribution.
  • the invention also applies to the use burners adapting to a combustion chamber.
  • the burner identified as a whole 1 essentially comprises a separation chamber into which arrives via a supply line 3 the air / combustible gas premixing advantageously opening into the chamber through a substantially tangential opening 4.
  • the chamber 2 which has the general shape of a cylindrical box with a substantially circular section is closed on its front face by a flame stabilization grid 5.
  • This grid can be of the type described in the aforementioned French patent No. 69.37574, comprising essentially orifices of suitable diameters and distribution to ensure good attachment and good stabilization of the flames at the inlet of the combustion chamber 6 and this for the powers considered of operating the burner.
  • the box forming the distribution chamber is closed by a wall 7.
  • the letters “front” and “rear” of the burner have been identified by the letters AV and AR, with reference to the circulation of the combustible mixture in the burner as shown by the arrows.
  • the ignition of the burner is ensured by an electrode 8 supplied with a suitable high voltage as shown in diagram 9 and suitably isolated, the ignition taking place by sparks between the tip 10 of the ignition electrode and the wall. next to the metal front flange 11 suitably grounded in the box forming the distribution chamber 2.
  • a flame control cell 12 sensitive to the ultraviolet radiation of the flame and “reading” the information through the orifices of the grate was placed behind the rear wall 7 of the chamber 2. flame stabilization 5.
  • the cell 12 is placed behind a nozzle 13 whose axis 14 is directed substantially perpendicular to the flame stabilization grid 5, said nozzle communicating through an orifice in the chamber distribution 2.
  • the burner is supplied with combustible gas by a pipe 18 and with main air by a pipe 19, the premix being thus delivered to the pipe 3 under substantially stoichiometric conditions.
  • the air is supplied by a fan or compressor 20 which supplies not only the main air duct 19 but also the secondary air duct 16, the connections being thus made that the secondary air inlet pressure in the nozzle 13 will be greater than that of the arrival of the premix in the distribution chamber 2, so as to obtain the sweeping and cooling of the nozzle 13 by the secondary air flow arriving at 17 as desired.
  • the cell 12 is connected to the burner operating programmer 21 which controls the ignition electrode 8 the fan 20 and the controlled gas inlet valve 23 by suitable connections.
  • the distribution chamber can optionally be provided with additional grids for homogenization and suitable distribution of the premix, as indicated for example in 27.
  • a torch or an auxiliary burner can optionally be used for igniting the burner which can be arranged for example in the axis of the burner or on the combustion chamber itself on which the burner is fixed.

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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)
  • Control Of Combustion (AREA)

Abstract

A gas burner of the air and combustible gas mixture type includes a flame control cell mounted away from the actual flame. The control cell, by being located away from the actual flame, can monitor the operating conditions of the flame and, in response thereto, controls the flow of air and gas, the firing of the lighting electrode and the regulating of the gas intake valve. The control cell is further protected from the flame and any possible backfires by a pressure differential existing between the injected air and combustible gas mixture.

Description

La présente invention a pour objet des perfectionnements à un brûleur à gaz du type à prémélange et à contrôle de flamme.The present invention relates to improvements to a gas burner of the premix type and flame control.

Ce type de brûleur est couramment utilisé dans l'industrie, permettant notamment de fortes puissances de chauffe par unité de surface.This type of burner is commonly used in industry, allowing in particular high heating powers per unit area.

De façon plus spécifique, le brûleur à gaz du type à prémélange et à contrôle de flamme comporte une arrivée du prémélange air + gaz combustible dans une chambre de répartition débouchant par une grille de stabilisation de flamme dans une chambre de combustion, et une cellule de contrôle de la flamme du brûleur placée en arrière d'un embout, lequel embout s'étend par rapport à la direction d'écoulement du mélange combustible en arrière de la grille de stabilisation de la flamme, l'axe dudit embout étant dirigé sensiblement perpendiculairement à ladite grille.More specifically, the gas burner of the premix and flame control type comprises an inlet of the air + fuel gas premix in a distribution chamber opening out through a flame stabilization grid in a combustion chamber, and a combustion cell. control of the burner flame placed behind a nozzle, which nozzle extends relative to the direction of flow of the fuel mixture behind the flame stabilization grid, the axis of said nozzle being directed substantially perpendicularly to said grid.

Divers travaux ont été effectués sur ce type de brûleurs, et l'on peut citer notamment FR-A-2063803 déposé au nom du même demandeur pour un « brûleur à gaz à grande puissance de chauffe ». Cependant dans ce brevet on visait essentiellement des applications industrielles spécifiques telles que la soudure de conduites de grand diamètre, le traitement de tôles, etc. L'invention concerne au contraire de façon plus particulière le domaine du chauffage par tube immergé, laquelle pose des problèmes spécifiques notamment de stabilisation de flammes dus aux fortes fluctuations de pression qu'engendre la combustion d'une flamme de forte puissance en milieu compact. En outre, il faut assurer un contrôle constant et efficace de la flamme pour éviter notamment toute extinction intempestive du brûleur en cours de combustion. Il en résulte des conditions particulièrement difficiles de fonctionnement de la cellule de contrôle de flamme si elle doit travailler en milieu immergé et en étant soumise à de très fortes contraintes thermiques. Différentes études ont été menées pour résoudre ces problèmes.Various works have been carried out on this type of burners, and there may be mentioned in particular FR-A-2063803 filed on behalf of the same applicant for a "gas burner with high heating power". However, in this patent, it was essentially aimed at specific industrial applications such as the welding of large diameter pipes, the treatment of sheets, etc. On the contrary, the invention relates more particularly to the field of heating by submerged tube, which poses specific problems, in particular of flame stabilization due to the large pressure fluctuations which the combustion of a high power flame generates in a compact medium. In addition, constant and effective control of the flame must be ensured to avoid, in particular, any untimely extinction of the burner during combustion. This results in particularly difficult operating conditions of the flame control cell if it must work in a submerged environment and being subjected to very high thermal stresses. Various studies have been carried out to solve these problems.

L'article consacré aux « nouveaux échangeurs alimentés en gaz naturel pour le chauffage de bains industriels (Revue Générale de Thermique, vol. 22, n° 253) invite notamment à placer l'organe de détection et de contrôle en arrière de la grille de stabilisation de flamme, vers le fond d'un embout. Cependant, l'embout est prévu pour déboucher directement au niveau de la grille. En outre, cet article n'indique pas les moyens pratiques de construction et de mise en place de cet organe de détection permettant de le prémunir en particulier contre toute instabilité de la flamme.The article devoted to "new exchangers supplied with natural gas for heating industrial baths (Revue Générale de Thermique, vol. 22, n ° 253) invites in particular to place the detection and control device behind the grid. flame stabilization, towards the bottom of a nozzle. However, the nozzle is designed to open directly at the grid. In addition, this article does not indicate the practical means of construction and installation of this detection member making it possible to protect it in particular against any instability of the flame.

Le document FR-A-2 274 869 préconise également de placer la cellule de contrôle en arrière d'un embout débouchant au niveau de la grille de stabilisation et disposé sensiblement perpendiculairement à cette dernière. Il prévoit en outre, pour éviter l'inflammation du brûleur due à d'éventuels retours de flammes, d'entourer une partie de l'embout par une cavité jouant le rôle de détecteur de retour de flamme. Toutefois, l'embout utilisé est du type à quartz et à prisme de renvoi, ce qui peut poser des problèmes au niveau de la détection par la cellule en cas de formation de buées de condensation et de dépôts de salissures sur l'embout. En outre, une telle construction, d'ailleurs non destinée aux installations à tube immergé, ne permet pas de placer la cellule au plus près de la flamme de façon à améliorer la lecture, celle-ci pouvant en effet alors être endommagée par un retour violent de flamme.Document FR-A-2 274 869 also recommends placing the control cell behind a nozzle opening at the level of the stabilization grid and disposed substantially perpendicularly to the latter. It also provides, to avoid ignition of the burner due to possible flashbacks, to surround part of the nozzle with a cavity acting as a flameback detector. However, the tip used is of the quartz and return prism type, which can cause problems in terms of detection by the cell in the event of condensation condensation and dirt deposits on the tip. In addition, such a construction, moreover not intended for installations with a submerged tube, does not allow the cell to be placed as close as possible to the flame so as to improve the reading, the latter then being able to be damaged by a return violent flame.

Au document GB-A-491 714 est enseigné un brûleur dans lequel une cellule de contrôle est disposée vers le fond d'un embout et peut être refroidi par une partie de l'air comburant alimentant le brûleur. Cependant cette construction ne permet pas non plus de protéger efficacement la cellule contre les retours de flamme en assurant un positionnement optimal de cette cellule de façon à améliorer la sécurité de détection et de contrôle.Document GB-A-491,714 teaches a burner in which a control cell is arranged towards the bottom of a nozzle and can be cooled by part of the combustion air supplying the burner. However, this construction also does not effectively protect the cell against flashback by ensuring optimal positioning of this cell so as to improve detection and control security.

L'invention a justement pour objet de résoudre ces problèmes. A cet effet, conformément à l'invention, en vue de faciliter le contrôle de la flamme en soustrayant la cellule de contrôle aux contraintes thermiques liées au fonctionnement du brûleur,

  • - l'embout s'étend vers l'arrière de la chambre de répartition dans laquelle il débouche par un orifice de communication, et reçoit une arrivée d'air secondaire sous pression, l'air sous pression nécessaire au fonctionnement du brûleur étant délivré par un conduit principal à l'arrivée du prémélange et par un conduit secondaire audit embout, et
  • - les connexions entre l'air principal et l'air secondaire sont faites de façon que la pression d'air secondaire audit embout soit supérieure à celle de l'arrivée du prémélange dans la chambre de répartition.
The object of the invention is precisely to solve these problems. To this end, in accordance with the invention, with a view to facilitating the control of the flame by subtracting the control cell from the thermal stresses linked to the operation of the burner,
  • the nozzle extends towards the rear of the distribution chamber into which it opens out through a communication orifice, and receives a supply of secondary air under pressure, the air under pressure necessary for the operation of the burner being supplied by a main conduit on arrival of the premix and through a secondary conduit to said nozzle, and
  • - The connections between the main air and the secondary air are made so that the pressure of secondary air at said nozzle is greater than that of the arrival of the premix in the distribution chamber.

De cette façon, on protège effectivement la cellule quelles que soient les instabilités de flamme qui peuvent survenir et on peut donc la placer au plus près de la flamme du brûleur à contrôler.In this way, the cell is effectively protected whatever the flame instabilities that may arise and it can therefore be placed as close as possible to the flame of the burner to be checked.

En outre, la cellule de lecture est ainsi protégée par. la grille de stabilisation et par la chambre de répartition interposée entre elle et ladite grille. On notera que cette disposition permet, par ailleurs, lorsque le brûleur est destiné à équiper un tube immergé de disposer facilement la cellule de contrôle en dehors du bain à chauffer.In addition, the reading cell is thus protected by. the stabilization grid and by the distribution chamber interposed between it and said grid. It will be noted that this arrangement makes it possible, moreover, when the burner is intended to equip a submerged tube, to easily dispose the control cell outside the bath to be heated.

Selon une autre caractéristique de l'invention, une électrode d'allumage est montée à travers ladite chambre de répartition débouchant par son électrode convenablement isolée électriquement à travers ladite grille de répartition et par sa tête reliée à l'alimentation électrique en arrière de ladite chambre de répartition.According to another characteristic of the invention, an ignition electrode is mounted through said distribution chamber opening out by its electrode suitably electrically isolated through said distribution grid and by its head connected to the power supply behind said chamber distribution.

L'invention s'applique également à l'utilisation de brûleurs s'adaptant à une chambre de combustion.The invention also applies to the use burners adapting to a combustion chamber.

L'invention, ses caractéristiques et avantages apparaîtront plus clairement à l'aide de la description qui va suivre faite en référence aux dessins annexés dans lesquels :

  • - la figure 1 montre de façon schématique en partie en coupe, en partie en vue extérieure et avec arrachements un brûleur à gaz conforme à l'invention,
  • - la figure 2 montre à plus petite échelle un schéma de montage du brûleur.
The invention, its characteristics and advantages will appear more clearly with the aid of the description which will follow made with reference to the accompanying drawings in which:
  • FIG. 1 schematically shows partly in section, partly in external view and with parts broken away, a gas burner according to the invention,
  • - Figure 2 shows on a smaller scale an assembly diagram of the burner.

En se reportant tout d'abord à la figure 1 le brûleur repéré dans son ensemble 1 comporte essentiellement une chambre de départition dans laquelle arrive par une conduite 3 d'alimentation le prémélange air/gaz combustible débouchant avantageusement dans la chambre par une ouverture sensiblement tangentielle 4. La chambre 2 qui a la forme générale d'un caisson cylindrique à section sensiblement circulaire est obturée sur sa face avant par une grille de stabilisation de flamme 5. Cette grille peut être du type décrit au brevet français susmentionné N° 69.37574, comportant essentiellement des orifices de diamètres et de répartition convenables pour assurer un bon accrochage et une bonne stabilisation des flammes à l'entrée de la chambre de combustion 6 et ce pour les puissances considérées de fonctionnement du brûleur.Referring first to Figure 1 the burner identified as a whole 1 essentially comprises a separation chamber into which arrives via a supply line 3 the air / combustible gas premixing advantageously opening into the chamber through a substantially tangential opening 4. The chamber 2 which has the general shape of a cylindrical box with a substantially circular section is closed on its front face by a flame stabilization grid 5. This grid can be of the type described in the aforementioned French patent No. 69.37574, comprising essentially orifices of suitable diameters and distribution to ensure good attachment and good stabilization of the flames at the inlet of the combustion chamber 6 and this for the powers considered of operating the burner.

Sur sa face arrière le caisson formant la chambre de répartition est fermé par une paroi 7. Sur la figure on a repéré par les lettres AV et AR le côté respectivement « avant et « arrière du brûleur en faisant référence à la circulation du mélange combustible dans le brûleur tel que schématisé par les flèches.On its rear face, the box forming the distribution chamber is closed by a wall 7. In the figure, the letters “front” and “rear” of the burner have been identified by the letters AV and AR, with reference to the circulation of the combustible mixture in the burner as shown by the arrows.

Dans l'exemple illustré l'allumage du brûleur est assuré par une électrode 8 alimentée sous haute tension convenable comme schématisé en 9 et convenablement isolée, l'allumage se faisant par étincelles entre la pointe 10 de l'électrode d'allumage et la paroi voisine du flasque avant 11 métallique convenablement mis à la masse du caisson formant la chambre de répartition 2.In the example illustrated, the ignition of the burner is ensured by an electrode 8 supplied with a suitable high voltage as shown in diagram 9 and suitably isolated, the ignition taking place by sparks between the tip 10 of the ignition electrode and the wall. next to the metal front flange 11 suitably grounded in the box forming the distribution chamber 2.

Pour contrôler le bon fonctionnement du brûleur, on a placé derrière la paroi 7 arrière de la chambre 2 une cellule de contrôle de flamme 12 sensible au rayonnement ultra-violet de la flamme et « lisant » l'information à travers les orifices de la grille de stabilisation de flamme 5. Dans le montage illustré la cellule 12 est placée en arrière d'un embout 13 dont l'axe 14 est dirigé sensiblement perpendiculairement à la grille 5 de stabilisation de flamme, ledit embout communiquant par un orifice dans la chambre de répartition 2.To control the proper functioning of the burner, a flame control cell 12 sensitive to the ultraviolet radiation of the flame and “reading” the information through the orifices of the grate was placed behind the rear wall 7 of the chamber 2. flame stabilization 5. In the illustrated assembly the cell 12 is placed behind a nozzle 13 whose axis 14 is directed substantially perpendicular to the flame stabilization grid 5, said nozzle communicating through an orifice in the chamber distribution 2.

En 16 on aperçoit d'autre part débouchant vers l'arrière de l'embout 13 un conduit secondaire amenant de l'air sous pression comme indiqué par la flèche 17, cette circulation d'air secondaire assurant un refroidissement supplémentaire interposé entre la chambre de répartition 2 et la cellule 12.In 16 we see on the other hand opening out towards the rear of the nozzle 13 a secondary duct bringing pressurized air as indicated by arrow 17, this secondary air circulation ensuring additional cooling interposed between the distribution 2 and cell 12.

En se référant à la figure 2, on voit que le brûleur est alimenté en gaz combustible par une conduite 18 et en air principal par un conduit 19, le prémélange étant ainsi délivré au conduit 3 dans des conditions sensiblement stoechiométri- ques. L'air est délivré par un ventilateur ou compresseur 20 qui alimente non seulement le conduit d'air principal 19 mais également le conduit d'air secondaire 16, les connexions étant ainsi faites que la pression d'arrivée d'air secondaire dans l'embout 13 sera supérieure à celle de l'arrivée du prémélange dans la chambre de répartition 2, de façon à obtenir le balayage et refroidissement de l'embout 13 par le débit d'air secondaire arrivant en 17 comme désiré.Referring to FIG. 2, it can be seen that the burner is supplied with combustible gas by a pipe 18 and with main air by a pipe 19, the premix being thus delivered to the pipe 3 under substantially stoichiometric conditions. The air is supplied by a fan or compressor 20 which supplies not only the main air duct 19 but also the secondary air duct 16, the connections being thus made that the secondary air inlet pressure in the nozzle 13 will be greater than that of the arrival of the premix in the distribution chamber 2, so as to obtain the sweeping and cooling of the nozzle 13 by the secondary air flow arriving at 17 as desired.

De façon classique et qui ne sera pas décrite, la cellule 12 est reliée au programmateur 21 de fonctionnement du brûleur qui commande par des connexions convenables l'électrode d'allumage 8 le ventilateur 20 et la vanne asservie 23 d'arrivée de gaz.Conventionally and which will not be described, the cell 12 is connected to the burner operating programmer 21 which controls the ignition electrode 8 the fan 20 and the controlled gas inlet valve 23 by suitable connections.

Revenant à la figure 1, on note sur le flasque arrière 7 des orifices 24 permettant le montage du brûleur sur le bâti fixe du générateur de chauffe (non représenté). Sur le flasque avant 11 on note les orifices 25 permettant l'ajustage sur la bride 11 du flasque 26 formant l'entrée de la chambre de combustion 6 qui peut donc être facilement fixée sous le brûleur. On note d'autre part que le diamètre Q de la chambre de combustion 6 est nettement supérieur au diamètre d de la grille 5 de stabilisation de flamme. Cette disposition qui est rendue possible par la forte puissance spécifique autorisée par le brûleur permet, contrairement à ce qui est fait dans les installations classiques de tube immergé d'éviter d'avoir à faire pénétrer assez profondément dans la chambre de combustion le brûleur, avec tous les inconvénients que cela présente au niveau de l'implantation. En particulier le brûleur décrit ci- dessus permet d'équiper des installations de tube immergé de construction particulièrement compactes, la chambre de combustion immergée pouvant être constituée par un simple tube court.Returning to FIG. 1, we note on the rear flange 7 orifices 24 allowing the mounting of the burner on the fixed frame of the heating generator (not shown). On the front flange 11 the holes 25 are noted allowing adjustment on the flange 11 of the flange 26 forming the inlet of the combustion chamber 6 which can therefore be easily fixed under the burner. On the other hand, it is noted that the diameter Q of the combustion chamber 6 is clearly greater than the diameter d of the flame stabilization grid 5. This arrangement, which is made possible by the high specific power authorized by the burner, makes it possible, contrary to what is done in conventional submerged tube installations, to avoid having to make the burner penetrate fairly deeply into the combustion chamber, with all the disadvantages that this presents in terms of implantation. In particular, the burner described above makes it possible to equip submerged tube installations of particularly compact construction, the submerged combustion chamber being able to consist of a simple short tube.

Diverses variantes peuvent être apportées au mode de réalisation illustré et décrit.Various variants can be made to the embodiment illustrated and described.

C'est ainsi que l'on peut éventuellement pourvoir la chambre de répartition de grilles supplémentaires d'homogénéisation et de répartition convenable du prémélange, comme indiqué par exemple en 27.This is how the distribution chamber can optionally be provided with additional grids for homogenization and suitable distribution of the premix, as indicated for example in 27.

Egalement, bien que l'utilisation d'une électrode d'allumage soit en général préférée, on peut éventuellement utiliser pour l'allumage du brûleur une torche ou un brûleur annexe qui peuvent être disposés par exemple dans l'axe du brûleur ou sur la chambre de combustion elle-même sur laquelle vient se fixer le brûleur.Also, although the use of an ignition electrode is generally preferred, a torch or an auxiliary burner can optionally be used for igniting the burner which can be arranged for example in the axis of the burner or on the combustion chamber itself on which the burner is fixed.

Claims (4)

1. Gas burner of the premixing type with flame control comprising an intake of the premixed air + gas fuel into a distribution chamber opening through a flame stabilization grid into a combustion chamber and a burner flame control cell (12) located to the rear of a connection piece (13), whereby this connection piece extends in relation to the direction of flow of the fuel mixture to the rear of the flame stabilization grid (5), the axis (14) of this connection piece being directed substantially perpendicular to the said grid (5), the said burner being characterised in that with a view to facilitating the control of the flame by removing the control cell (12) from the thermal stresses associated with the operation of the burner,
- the connection piece (13) extends towards the rear of the distribution chamber (2) into which it opens through a communicating opening and is provided with an intake (16) of secondary air (17) under pressure, whereby the air under pressure required for the operation of the burner is supplied through a main pipe (19) to the intake of the mixture (3) and through a secondary pipe (16) to the said connection piece (13) and
- the connections between the main air (19) and the secondary air (16) are formed in such a way that the pressure of the secondary air to the said connection piece is greater than that of the intake of the mixture into the distribution chamber (2).
2. Burner according to claim 1, characterised in that an ignition electrode (8) is arranged through the said distribution chamber (2) whereby its electrode (10) which is suitably insulated electrically runs through the said distribution grid (5) and is connected with its head to the electrical supply to the rear of the said distribution chamber (2).
3. Burner according to one of the previous claims, characterised in that the said stabilization grid (5) is mounted in a flange (11) which seals the said distribution chamber (2) at the front, whereby the said flange (11) fits on to an attachment flange (26) of the combustion chamber (6) and the said grid (5) has a diameter (d) which is significantly smaller than that (D) of the opening of the said attachment flange (26) of the combustion chamber (6).
4. Use of the burner according to one of the previous claims, characterised in that it is made to match a combustion chamber (6) and compact submerged tube installation.
EP84401101A 1983-06-08 1984-05-29 Gas burner of the premixing type with flame control, and use of this burner, especially in a submerged tube installation Expired EP0128809B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84401101T ATE32136T1 (en) 1983-06-08 1984-05-29 GAS BURNER OF THE PREMIXED TYPE AND WITH FLAME CONTROL AND APPLICATION OF THIS BURNER PARTICULARLY FOR SUSPENSION TUBE SYSTEMS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8309468A FR2547394B1 (en) 1983-06-08 1983-06-08 GAS BURNER OF THE PREMIXED AND FLAME CONTROL TYPE AND USE OF THIS BURNER IN PARTICULAR FOR UNDERWATER TUBE INSTALLATION
FR8309468 1983-06-08

Publications (3)

Publication Number Publication Date
EP0128809A2 EP0128809A2 (en) 1984-12-19
EP0128809A3 EP0128809A3 (en) 1985-08-14
EP0128809B1 true EP0128809B1 (en) 1988-01-20

Family

ID=9289577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84401101A Expired EP0128809B1 (en) 1983-06-08 1984-05-29 Gas burner of the premixing type with flame control, and use of this burner, especially in a submerged tube installation

Country Status (7)

Country Link
US (1) US4583938A (en)
EP (1) EP0128809B1 (en)
JP (1) JPS6069427A (en)
AT (1) ATE32136T1 (en)
CA (1) CA1235366A (en)
DE (1) DE3468931D1 (en)
FR (1) FR2547394B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606490B1 (en) * 1986-11-07 1990-07-13 Gaz De France PRE-MIXED BLOW-AIR TYPE GAS BURNER
FR2606492B1 (en) * 1986-11-07 1991-02-15 Gaz De France PRE-MIXED GAS BURNER WITH FLAME CONTROL
US5924287A (en) * 1991-05-29 1999-07-20 Best; Frederick George Domestic energy supply system
FR2685448B1 (en) * 1991-12-20 1994-03-25 Gaz De France GAS BURNER WITH COMBUSTION GRID, ITS COMBUSTION METHOD, AND HEATING SYSTEM COMPRISING SUCH A BURNER.
FR2685447B1 (en) * 1991-12-20 1998-01-02 Gaz De France PERFECTED BURNER WITH GRILL AS WELL AS HEATING INSTALLATION EQUIPPED WITH SUCH A BURNER.
KR100384645B1 (en) * 2000-08-08 2003-05-22 박동만 A burner for use with liquid fuel combustion apparatus

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB491714A (en) * 1937-03-01 1938-09-01 G C Pillinger & Co Ltd Improvements relating to automatic control systems for heating burners
US2395103A (en) * 1943-11-18 1946-02-19 Claus Heriberto Enrique G Juan Turbulent burner for fuels in general
GB613883A (en) * 1946-06-18 1948-12-03 Norman Swindin Improvements in submerged flame burners
FR1004670A (en) * 1949-12-23 1952-04-01 Liquid fuel burner
US2772645A (en) * 1952-05-22 1956-12-04 Babcock & Wilcox Co Fuel and air control damper for cyclone furnaces
US2843197A (en) * 1954-12-13 1958-07-15 Howard B Snyder Burner
FR1257092A (en) * 1960-02-16 1961-03-31 Pillard Chauffage Detection device by reflection, added to the photoelectric flame control cells
US3280882A (en) * 1964-04-06 1966-10-25 Babcock & Wilcox Co Flame detector arrangement
US3486835A (en) * 1968-04-16 1969-12-30 Sun Ray Burner Mfg Corp Power conversion burner head
FR2063803A5 (en) * 1969-10-31 1971-07-09 Gaz De France
JPS4914543B1 (en) * 1970-11-20 1974-04-08
US3825913A (en) * 1972-03-31 1974-07-23 Electronics Corp America Fuel burner supervisory system
FR2274869A1 (en) * 1974-06-14 1976-01-09 Antargaz Heater monitoring equipment - light ray detector transmitting to receiver outside
JPS51133108A (en) * 1975-05-15 1976-11-18 Nippon Kokan Kk <Nkk> A swirl burner for hot stoves

Also Published As

Publication number Publication date
EP0128809A3 (en) 1985-08-14
FR2547394A1 (en) 1984-12-14
EP0128809A2 (en) 1984-12-19
CA1235366A (en) 1988-04-19
US4583938A (en) 1986-04-22
DE3468931D1 (en) 1988-02-25
JPS6069427A (en) 1985-04-20
ATE32136T1 (en) 1988-02-15
FR2547394B1 (en) 1987-07-17

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