EP1491822A1 - Burner with impact element for producing turbulence - Google Patents

Burner with impact element for producing turbulence Download PDF

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Publication number
EP1491822A1
EP1491822A1 EP04077558A EP04077558A EP1491822A1 EP 1491822 A1 EP1491822 A1 EP 1491822A1 EP 04077558 A EP04077558 A EP 04077558A EP 04077558 A EP04077558 A EP 04077558A EP 1491822 A1 EP1491822 A1 EP 1491822A1
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EP
European Patent Office
Prior art keywords
burner
fuel
igniter
turbulence
obstacle
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.)
Withdrawn
Application number
EP04077558A
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German (de)
French (fr)
Inventor
Daniel Bouvier
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.)
Compagnie des Gaz de Petrole Primagaz SA
Original Assignee
Compagnie des Gaz de Petrole Primagaz SA
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9546482&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1491822(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Compagnie des Gaz de Petrole Primagaz SA filed Critical Compagnie des Gaz de Petrole Primagaz SA
Publication of EP1491822A1 publication Critical patent/EP1491822A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q3/00—Igniters using electrically-produced sparks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/34—Continuously applied ignition cycles

Definitions

  • Self-evaporating burners in which the fuel is heated beforehand by indirect heat exchange with the burner flame, have, by the fact that the burner body acts as a heat exchanger, ratios of total length / diameter of the around 2; if such a ratio favors compactness, it leads to a certain number of drawbacks: unstable flame, impossibility of using high primary vents, very difficult ignition by electrode, requiring the use of expensive additional devices.
  • the invention relates to a burner according to claim 1. Improvements are defined in the dependent claims.
  • the burner comprises a tube in which is mounted an obstacle creating a zone of turbulence and the ignition electrode is mounted so as to make spark a spark in the turbulence zone.
  • the disturbing device may consist of a heat resistant ball with a diameter of 5 to 10 mm placed 55 mm from the bottom of the burner with a diameter of 52 mm and a length of 95 mm - the distance being taken when the mixture arrives in the burner, the electrode being placed approximately 5 mm from the walls in the turbulent zone established at approximately 65 mm from the bottom of the burner.
  • the obstacle is shaped so as to give the side wall of the burner a flat flame.
  • FIG. 1 is a diagram of a burner according to the invention
  • the burner shown in FIG. 1 comprises an accumulator 1 which can be constituted by the battery of a carrier vehicle and which supplies, via a switch 2, in parallel the coil 3 of a solenoid valve 4, and an igniter consisting successively of an oscillator 5, a power stage 6 and a step-up transformer voltage 7.
  • the solenoid valve 4 is placed on the pipe 8 supplying the fuel to a burner 9. Although this is not shown in the figure, the fuel first passes through a jacket along the body 9 of the burner before entering the burner body.
  • the transformer 7 supplies a conductor 10 with an electrode 11 for igniting the burner.
  • a steel ball 12 of 5 mm diameter placed 55 mm from the bottom of the burner, which has a diameter of 52 mm and a length of 95 mm.
  • the electrode is placed approximately 5 mm from the walls in the turbulence zone established approximately 65 mm from the bottom of the burner.
  • switch 2 When switch 2 is open, the whole system is at rest. Fuel is not sent to the burner and the ignition device does not work. But as soon as the switch 2 is closed, fuel arrives at the burner and it is ignited by the electrode 11, the ignition operations being carried out continuously as long as the switch 2 is closed at a time interval a tenth of a second.
  • FIG. 2 shows a burner in which the body 13 is rectangular and defines with the ball 14 relatively flat intervals so that the flames which exit from the burner are in the form of a veil.
  • Figure 3 which is a sectional view of a burner, we recognize the ball 12 and the body 9 of the burner. There is also provided a secondary air inlet 15 and an ionization control electrode 16 which makes it possible to verify that the combustion is well established and if not to provide corrective actions such as closing the supply.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Materials For Medical Uses (AREA)
  • Incineration Of Waste (AREA)
  • Saccharide Compounds (AREA)
  • Control Of Combustion (AREA)
  • Gas Burners (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

Two parallel electric circuits are supplied by a battery (1) via common control switch (2). One circuit energizes fuel valve (4) operating coil (3), other igniter circuit, which terminates in spark electrode (16), on insulated support (11) at bottom of burner (9). Series ignition circuit comprises oscillator (5), power unit (6) and step-up transformer (7), whose output (10) is connected to igniter (16). Fuel line (8) delivers fuel via control valve (4) and heat exchanger at base of which it enters, near air delivery point. Turbulence is created in fuel mixture flow by steel sphere (12) mounted near igniter. An independent claim is also included for the burner.

Description

Pour de nombreuses applications mobiles, il est nécessaire de disposer de brûleurs de grande puissance, d'un encombrement restreint et résistant à l'extinction et générant une flamme à température élevée. Il faut de plus pouvoir allumer ces brûleurs à distance et en surveiller le fonctionnement.For many mobile applications, it is necessary to have high-power burners, of a small size and resistant to extinction and generating a flame at high temperature. It is also necessary to be able to light these burners remotely and monitor their operation.

Les considérations de puissance conduisent souvent à l'utilisation de brûleurs autovaporisants à échangeur intégré cylindrique, alimentés en phase liquide pour s'affranchir des problèmes de débit liés aux récipients mobiles utilisés. C'est le cas en particulier des brûleurs utilisés pour le désherbage, le défannage, la désinfection des sols et plus généralement toutes les applications mobiles.Power considerations often lead to the use of self-evaporating burners with an integrated cylindrical exchanger, supplied in liquid phase to overcome the flow problems associated with the mobile containers used. This is particularly the case for burners used for weeding, repairing, disinfecting floors and more generally all mobile applications.

Les brûleurs autoyaporisants, dans lesquels le combustible est chauffé au préalable par échange de chaleur indirecte avec la flamme du brûleur, ont, par le fait que le corps du brûleur sert d'échangeur de chaleur, des rapports de longueur totale/diamètre de l'ordre de 2 environ ; si un tel rapport favorise la compacité, il entraîne un certain nombre d'inconvénients: flamme instable, impossibilité d'utiliser des aérations primaires élevées, allumage très difficile par électrode obligeant à recourir à des dispositifs annexes coûteux.Self-evaporating burners, in which the fuel is heated beforehand by indirect heat exchange with the burner flame, have, by the fact that the burner body acts as a heat exchanger, ratios of total length / diameter of the around 2; if such a ratio favors compactness, it leads to a certain number of drawbacks: unstable flame, impossibility of using high primary vents, very difficult ignition by electrode, requiring the use of expensive additional devices.

L'invention vise un brûleur suivant la revendication 1. Des perfectionnements sont définis dans les revendications dépendantes.The invention relates to a burner according to claim 1. Improvements are defined in the dependent claims.

Pour faire en sorte que l'énergie consommée par le dispositif d'allumage ne soit pas trop grande, le brûleur comprend un tube dans lequel est monté un obstacle créant une zone de turbulence et l'électrode d'allumage est montée de manière à faire jaillir une étincelle dans la zone de turbulence.To ensure that the energy consumed by the ignition device is not too large, the burner comprises a tube in which is mounted an obstacle creating a zone of turbulence and the ignition electrode is mounted so as to make spark a spark in the turbulence zone.

Cet agencement présente les avantages suivants, en raison du fait que la vitesse est plus petite dans la zone de turbulence :This arrangement has the following advantages, due to the fact that the speed is lower in the turbulence zone:

1°) Stabilisation de la flamme dans le corps du brûleur par établissement de la combustion dans la zone de forte turbulence engendrée par le dispositif perturbateur, la combustion étant pratiquement indépendante du débit.1 °) Stabilization of the flame in the body of the burner by establishment of the combustion in the zone of strong turbulence generated by the disturbing device, the combustion being practically independent of the flow.

2°) Suppression de l'effet de paroi qui tend à décoller la flamme de la paroi du brûleur et occasionne des rentrées d'air frais rendant la combustion instable.2) Suppression of the wall effect which tends to detach the flame from the wall of the burner and causes fresh air to enter making combustion unstable.

3°) Possibilité, en plaçant une électrode d'allumage dans la zone de forte turbulence, de réaliser l'allumage du brûleur sur l'ensemble des pressions de fonctionnement avec un niveau d'énergie électrique très bas (piézo par exemple).3 °) Possibility, by placing an ignition electrode in the zone of strong turbulence, to ignite the burner on all operating pressures with a very low level of electrical energy (piezo for example).

4°) Possibilité, en plaçant une électrode de contrôle par ionisation dans la zone à forte turbulence à l'endroit où se stabilise la combustion, de vérifier si cette dernière est établie et par voie de conséquence de vérifier si le brûleur est en fonctionnement et sinon d'apporter des actions correctives : réallumage, fermeture de l'alimentation.4 °) Possibility, by placing an ionization control electrode in the zone with strong turbulence at the point where the combustion stabilizes, to check if the latter is established and consequently to check if the burner is in operation and otherwise take corrective actions: re-ignition, shutdown of the power supply.

5°) Possibilité pour un brûleur de géométrie donnée d'augmenter l'aération primaire et/ou le débit.5 °) Possibility for a burner of given geometry to increase the primary ventilation and / or the flow.

6°) Possibilité pour des brûleurs autovaporisants à échangeur annulaire (tubes ou monobloc) de proportionner la quantité de chaleur transmise au dispositif de réchauffage en déplaçant le front de flamme ou en jouant sur l'effet de paroi.6 °) Possibility for self-evaporating burners with annular exchanger (tubes or monobloc) to proportion the quantity of heat transmitted to the reheating device by moving the flame front or by playing on the wall effect.

A titre indicatif, le dispositif perturbateur peut être constitué d'une bille résistante à la chaleur d'un diamètre de 5 à 10 mm placée à 55 mm du fond du brûleur d'un diamètre de 52 mm et d'une longueur de 95 mm - la distance étant prise à l'arrivée du mélange dans le brûleur, l'électrode étant placée à environ 5 mm des parois dans la zone turbulente établie à 65 mm environ du fond du brûleur.As an indication, the disturbing device may consist of a heat resistant ball with a diameter of 5 to 10 mm placed 55 mm from the bottom of the burner with a diameter of 52 mm and a length of 95 mm - the distance being taken when the mixture arrives in the burner, the electrode being placed approximately 5 mm from the walls in the turbulent zone established at approximately 65 mm from the bottom of the burner.

Suivant un mode de réalisation, l'obstacle est conformé de manière à donner avec la paroi latérale du brûleur une flamme plate.According to one embodiment, the obstacle is shaped so as to give the side wall of the burner a flat flame.

Aux dessins annexés, donnés uniquement à titre d'exemple :In the accompanying drawings, given solely by way of example:

la figure 1 est un schéma d'un brûleur suivant l'inventionFigure 1 is a diagram of a burner according to the invention

et les figures 2 et 3 illustrent deux variantes du brûleur suivant l'invention.and Figures 2 and 3 illustrate two variants of the burner according to the invention.

Le brûleur représenté à la figure 1, comporte un accumulateur 1 qui peut être constitué par la batterie d'un véhicule porteur et qui alimente, par l'intermédiaire d'un interrupteur 2, en parallèle la bobine 3 d'une électrovanne 4, et un allumeur constitué successivement d'un oscillateur 5, d'un étage de puissance 6 et d'un transformateur élévateur de tension 7. L'électrovanne 4 est placée sur le conduit 8 d'arrivée du combustible à un brûleur 9. Bien que cela ne soit pas représenté à la figure, le combustible passe d'abord dans une chemise le long du corps 9 du brûleur avant de pénétrer dans le corps du brûleur. Le transformateur 7 alimente par un conducteur 10 une électrode 11 d'allumage du brûleur.The burner shown in FIG. 1 comprises an accumulator 1 which can be constituted by the battery of a carrier vehicle and which supplies, via a switch 2, in parallel the coil 3 of a solenoid valve 4, and an igniter consisting successively of an oscillator 5, a power stage 6 and a step-up transformer voltage 7. The solenoid valve 4 is placed on the pipe 8 supplying the fuel to a burner 9. Although this is not shown in the figure, the fuel first passes through a jacket along the body 9 of the burner before entering the burner body. The transformer 7 supplies a conductor 10 with an electrode 11 for igniting the burner.

A l'intérieur du brûleur, est montée par deux tiges s'étendant suivant la direction longitudinale du brûleur 9, une bille 12 en acier de 5 mm de diamètre placée à 55 mm du fond du brûleur, lequel a un diamètre de 52 mm et une longueur de 95 mm. L'électrode est placée à 5 mm environ des parois dans la zone de turbulence établie à 65 mm environ du fond du brûleur.Inside the burner, is mounted by two rods extending in the longitudinal direction of the burner 9, a steel ball 12 of 5 mm diameter placed 55 mm from the bottom of the burner, which has a diameter of 52 mm and a length of 95 mm. The electrode is placed approximately 5 mm from the walls in the turbulence zone established approximately 65 mm from the bottom of the burner.

Lorsque l'interrupteur 2 est ouvert, tout le système est au repos. Du combustible n'est pas envoyé au brûleur et le dispositif d'allumage ne fonctionne pas. Mais dès que l'on ferme l'interrupteur 2, du combustible arrive au brûleur et il est allumé par l'électrode 11, les opérations d'allumage s'effectuant en permanence tant que l'interrupteur 2 est fermé à un intervalle de temps d'un dixième de seconde.When switch 2 is open, the whole system is at rest. Fuel is not sent to the burner and the ignition device does not work. But as soon as the switch 2 is closed, fuel arrives at the burner and it is ignited by the electrode 11, the ignition operations being carried out continuously as long as the switch 2 is closed at a time interval a tenth of a second.

La figure 2 montre un brûleur dans lequel le corps 13 est rectangulaire et délimite avec la bille 14 des intervalles relativement plats en sorte que les flammes qui sortent du brûleur sont sous la forme d'un voile.FIG. 2 shows a burner in which the body 13 is rectangular and defines with the ball 14 relatively flat intervals so that the flames which exit from the burner are in the form of a veil.

A la figure 3, qui est une vue en coupe d'un brûleur, on reconnaît la bille 12 et le corps 9 du brûleur. Il est prévu en outre une entrée 15 d'air secondaire, et une électrode 16 de contrôle par ionisation qui permet de vérifier que la combustion est bien établie et sinon d'apporter des actions correctives telles qu'une fermeture de l'alimentation.In Figure 3, which is a sectional view of a burner, we recognize the ball 12 and the body 9 of the burner. There is also provided a secondary air inlet 15 and an ionization control electrode 16 which makes it possible to verify that the combustion is well established and if not to provide corrective actions such as closing the supply.

Claims (4)

Brûleur comprenant un corps (9) tubulaire, un obstacle (12) créant une zone de turbulence dans le corps (9) et une électrode (11) montée de manière à faire jaillir une étincelle dans la zone de turbulence, caractérisé en ce que l'obstacle est un corps plein et, de préférence, une bille (12) n'occupant qu'une partie de la section transversale du corps (9).Burner comprising a tubular body (9), an obstacle (12) creating a zone of turbulence in the body (9) and an electrode (11) mounted so as to generate a spark in the zone of turbulence, characterized in that the The obstacle is a solid body and, preferably, a ball (12) occupying only part of the cross section of the body (9). Brûleur suivant la revendication 1, caractérisé en ce que l'obstacle (12) est conformé de manière à donner une flamme plate.Burner according to claim 1, characterized in that the obstacle (12) is shaped so as to give a flat flame. Brûleur suivant la revendication 1 ou 2, caractérisé en ce que l'obstacle (12) occupe du dixième au cinquième de la section transversale du tube (3).Burner according to claim 1 or 2, characterized in that the obstacle (12) occupies from one tenth to one fifth of the cross section of the tube (3). Brûleur comprenant un corps (9) tubulaire et un obstacle (14) créant une zone de turbulence dans le corps (9), caractérisé en ce que l'obstacle (12) est conformé de manière à ménager entre lui et le corps (9) un intervalle plat.Burner comprising a tubular body (9) and an obstacle (14) creating a zone of turbulence in the body (9), characterized in that the obstacle (12) is shaped so as to form between it and the body (9) a flat interval.
EP04077558A 1999-06-08 2000-06-06 Burner with impact element for producing turbulence Withdrawn EP1491822A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9907178A FR2794847B1 (en) 1999-06-08 1999-06-08 PROCESS FOR PREVENTING THE BURNER OF A BURNER FROM EXTINGUISHING AND BURNER FACILITATING ITS IMPLEMENTATION
FR9907178 1999-06-08
EP00938889A EP1105682B1 (en) 1999-06-08 2000-06-06 Method for operating a burner and burner facilitating the implementation of said method

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP00938889.3 Division 2000-06-06
EP00938889A Division EP1105682B1 (en) 1999-06-08 2000-06-06 Method for operating a burner and burner facilitating the implementation of said method

Publications (1)

Publication Number Publication Date
EP1491822A1 true EP1491822A1 (en) 2004-12-29

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ID=9546482

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Application Number Title Priority Date Filing Date
EP04077558A Withdrawn EP1491822A1 (en) 1999-06-08 2000-06-06 Burner with impact element for producing turbulence
EP00938889A Expired - Lifetime EP1105682B1 (en) 1999-06-08 2000-06-06 Method for operating a burner and burner facilitating the implementation of said method

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP00938889A Expired - Lifetime EP1105682B1 (en) 1999-06-08 2000-06-06 Method for operating a burner and burner facilitating the implementation of said method

Country Status (8)

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EP (2) EP1491822A1 (en)
AT (1) ATE290191T1 (en)
AU (1) AU5411800A (en)
DE (1) DE60018358T2 (en)
ES (1) ES2234621T3 (en)
FR (1) FR2794847B1 (en)
PT (1) PT1105682E (en)
WO (1) WO2000075572A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103672957A (en) * 2013-12-23 2014-03-26 周云侠 Electronic gas igniter with single battery

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9702550B2 (en) * 2012-07-24 2017-07-11 Clearsign Combustion Corporation Electrically stabilized burner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1495884A (en) * 1966-10-05 1967-09-22 Babcock & Wilcox Co Igniter for fuel burners
US3460916A (en) * 1964-07-10 1969-08-12 Allan Inovius Exhaust gas burners
GB1334832A (en) * 1971-05-07 1973-10-24 Kromschroeder Ag G Burner for gaseous fuels

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS587130B2 (en) * 1976-11-29 1983-02-08 株式会社日立製作所 Combustion control device
US4249884A (en) * 1977-12-27 1981-02-10 Electronics Corporation Of America Burner control apparatus with stabilized pilot flame timing interval
JPS5538422A (en) * 1978-09-11 1980-03-17 Hitachi Ltd Control device for burner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3460916A (en) * 1964-07-10 1969-08-12 Allan Inovius Exhaust gas burners
FR1495884A (en) * 1966-10-05 1967-09-22 Babcock & Wilcox Co Igniter for fuel burners
GB1334832A (en) * 1971-05-07 1973-10-24 Kromschroeder Ag G Burner for gaseous fuels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103672957A (en) * 2013-12-23 2014-03-26 周云侠 Electronic gas igniter with single battery

Also Published As

Publication number Publication date
FR2794847A1 (en) 2000-12-15
PT1105682E (en) 2005-07-29
WO2000075572A1 (en) 2000-12-14
ATE290191T1 (en) 2005-03-15
DE60018358D1 (en) 2005-04-07
AU5411800A (en) 2000-12-28
ES2234621T3 (en) 2005-07-01
EP1105682A1 (en) 2001-06-13
DE60018358T2 (en) 2005-09-22
FR2794847B1 (en) 2001-07-20
EP1105682B1 (en) 2005-03-02

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