EP3569927A1 - Burner device with pulsed air/gas pre-mix - Google Patents

Burner device with pulsed air/gas pre-mix Download PDF

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Publication number
EP3569927A1
EP3569927A1 EP19175468.8A EP19175468A EP3569927A1 EP 3569927 A1 EP3569927 A1 EP 3569927A1 EP 19175468 A EP19175468 A EP 19175468A EP 3569927 A1 EP3569927 A1 EP 3569927A1
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EP
European Patent Office
Prior art keywords
burner
air
lamellar
gas
burner device
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.)
Granted
Application number
EP19175468.8A
Other languages
German (de)
French (fr)
Other versions
EP3569927B1 (en
EP3569927C0 (en
Inventor
Yves Cazard
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.)
Yahtec
Original Assignee
Yahtec
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Filing date
Publication date
Priority claimed from FR1870577A external-priority patent/FR3081212A1/en
Application filed by Yahtec filed Critical Yahtec
Publication of EP3569927A1 publication Critical patent/EP3569927A1/en
Application granted granted Critical
Publication of EP3569927B1 publication Critical patent/EP3569927B1/en
Publication of EP3569927C0 publication Critical patent/EP3569927C0/en
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Classifications

    • 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
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F23D14/36—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air in which the compressor and burner form a single unit
    • 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
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • 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
    • F23D14/70—Baffles or like flow-disturbing devices
    • 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
    • F23D14/74—Preventing flame lift-off
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/006—Air heaters using fluid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/02—Space-heating

Definitions

  • the present invention relates to a burner device with premix air / gas pulsed.
  • Air-stream burners are known for directly heating a constant flow of air, in which the oxygen necessary for combustion is taken.
  • the mixture is made at the perforated plates disposed downstream of the gas injection, configured in a V and which serve as a flame stabilizer.
  • the flame is short at small power and long, exceeding the V of the sheets, in great power.
  • Such a burner may have the disadvantage of not achieving stoichiometric combustion.
  • Pre-mixed burners are also known, including a feed system capable of producing an air / gas mixture in the desired proportions, and of injecting this mixture into the burner, with the advantage of a good yield and therefore a low emission of pollutants.
  • the object of the present invention is to provide a burner device with a new-type, pre-mixed, air / gas burner, which makes it possible to overcome the various disadvantages of the art, and to obtain a perfect combustion, whatever the power level.
  • the lamellar burner makes it possible to obtain a perfect combustion, whereas from 50% to 100% of the power, this perfect combustion is obtained by the development of the flame partially on the lamellar burner and on both perforated V-plates.
  • a burner device 1 disposed in an air stream 2 downstream of a centrifugal fan 20.
  • This fan 20 is supplied with AF air that blows towards the device burner 1, to produce, downstream of the burner 1, a heated air AR.
  • a mixing system 3 which comprises a centrifugal fan 30 fed by the center of gas G and on the other hand by combustion air AC, and having on the periphery a conduit 31 for ejecting the resulting mixture M, connected to the burner device 1.
  • the burner device 1 comprises a lamellar burner 10 associated with a flame stabilizer 11 which is in the form of two sheets 12 and 13 configured in V, which flare out from the lamellar burner 10 to the outside the air vein 2.
  • the lamellar burner 10 consists of stacked plates, of which one in two is perforated. The plates are spaced apart so that the non-perforated holes do not block the perforations of the adjacent plate, to allow the combustion of the air-gas mixture.
  • the conduit 31 opens on the lamellar burner 10 on a perforated plate, perpendicular thereto, the combustion being at the periphery of the plates.
  • the lamellar burner combination 10 / flame stabilizer 11 makes it possible to obtain a short flame, protected from turbulence by the perforated plates 12 and 13.
  • the combustion obtained is better with less power, while the combustion at the periphery allows the plates to remain at a temperature below 400 ° C unlike existing burner devices where the combustion is done on the burner; here the lamellar burner 10 does not overheat and deteriorates less with time.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Gas Burners (AREA)

Abstract

Dispositif de bruleur à pré-mélange air/gaz puisé qui comprend un bruleur lamellaire (10) associé à un stabilisateur de flamme (11), disposés dans une veine d'air (2), et où :- le bruleur lamellaire (10) est constitué d'un empilement de plaques régulièrement espacées, dont une sur deux est perforée, et qui est alimenté en un mélange air/gaz réalisé dans un système de mélange (3) disposé extérieurement à la veine d'air (2), et- le stabilisateur de flamme (11) se présente sous la forme de deux tôles (12, 13) configurées en V et s'évasant à partir du bruleur lamellaire (10).A pulsed air / gas premix burner device which comprises a lamellar burner (10) associated with a flame stabilizer (11), arranged in an air stream (2), and wherein: - the lamellar burner (10) consists of a stack of regularly spaced plates, of which one in two is perforated, and which is supplied with an air / gas mixture produced in a mixing system (3) arranged externally to the air stream (2), and - The flame stabilizer (11) is in the form of two sheets (12, 13) configured in V and flaring from the lamellar burner (10).

Description

La présente invention a pour objet un dispositif de bruleur à pré-mélange air/gaz pulsé.The present invention relates to a burner device with premix air / gas pulsed.

On connaît les bruleurs à veine d'air destinés à chauffer directement un flux constant d'air, dans lequel est prélevé l'oxygène nécessaire à la combustion. Le mélange est réalisé au niveau de tôles perforées disposées en aval de l'injection de gaz, configurées en un V et qui servent de stabilisateur de flamme.Air-stream burners are known for directly heating a constant flow of air, in which the oxygen necessary for combustion is taken. The mixture is made at the perforated plates disposed downstream of the gas injection, configured in a V and which serve as a flame stabilizer.

Pour faire moduler la puissance, on augmente plus ou moins le débit de gaz et la flamme se développe à l'intérieur du V.To modulate the power, it increases more or less the flow of gas and the flame develops inside the V.

La flamme est courte à petite puissance et longue, dépassant le V des tôles, en grande puissance. Un tel bruleur peut présenter l'inconvénient de ne pas atteindre une combustion stoechiométrique.The flame is short at small power and long, exceeding the V of the sheets, in great power. Such a burner may have the disadvantage of not achieving stoichiometric combustion.

On connaît aussi les bruleurs à pré-mélange, comprenant un système d'alimentation apte à réaliser un mélange air/gaz dans les proportions souhaitées, et à injecter ce mélange dans le bruleur, avec pour avantage un bon rendement et donc une faible émission de polluants.Pre-mixed burners are also known, including a feed system capable of producing an air / gas mixture in the desired proportions, and of injecting this mixture into the burner, with the advantage of a good yield and therefore a low emission of pollutants.

La présente invention a pour but de proposer un dispositif de bruleur à pré-mélange air/gaz pulsé de type nouveau, permettant de remédier aux divers inconvénients de l'étant de la technique, et d'obtenir une combustion parfaite, quel que soit le niveau de puissance.The object of the present invention is to provide a burner device with a new-type, pre-mixed, air / gas burner, which makes it possible to overcome the various disadvantages of the art, and to obtain a perfect combustion, whatever the power level.

Le dispositif de bruleur à pré-mélange air/gaz pulsé selon l'invention se caractérise en ce qu'il comprend un bruleur lamellaire associé à un stabilisateur de flamme, disposés dans une veine d'air, et où :

  • ledit bruleur lamellaire est constitué d'un empilement de plaques régulièrement espacées, dont une sur deux est perforée, et qui est alimenté en un mélange air/gaz réalisé dans un système de mélange disposé extérieurement à ladite veine d'air, et
  • ledit stabilisateur de flamme se présente sous la forme de deux tôles perforées configurées en V et s'évasant à partir dudit bruleur lamellaire.
The burner device with premixed air / gas according to the invention is characterized in that it comprises a lamellar burner associated with a flame stabilizer, arranged in a vein of air, and where:
  • said lamellar burner consists of a stack of regularly spaced plates, of which one in two is perforated, and which is supplied with an air / gas mixture produced in a mixing system arranged externally to said air stream, and
  • said flame stabilizer is in the form of two perforated sheets configured in V and flaring from said lamellar burner.

De la puissance minimale jusqu'à 50% de la puissance, le brûleur lamellaire permet d'obtenir une combustion parfaite, tandis que de 50% à 100% de la puissance, cette combustion parfaite est obtenue par le développement de la flamme partiellement sur le brûleur lamellaire et sur les deux plaques en V perforées.From the minimum power up to 50% of the power, the lamellar burner makes it possible to obtain a perfect combustion, whereas from 50% to 100% of the power, this perfect combustion is obtained by the development of the flame partially on the lamellar burner and on both perforated V-plates.

Les avantages et les caractéristiques du dispositif de bruleur selon l'invention ressortiront plus clairement de la description qui suit et qui se rapporte au dessin annexé, lequel en représente, sur une figure unique, une vue schématique et en perspective.The advantages and characteristics of the burner device according to the invention will emerge more clearly from the description which follows and which refers to the attached drawing, which represents, in a single figure, a schematic view in perspective.

Sur cette figure, on peut voir un dispositif de bruleur 1 selon l'invention, disposé dans une veine d'air 2 en aval d'un ventilateur centrifuge 20. Ce ventilateur 20 est alimenté en air AF qu'il souffle en direction du dispositif de bruleur 1, afin de produire, en aval du bruleur 1, un air réchauffé AR.In this figure, we can see a burner device 1 according to the invention, disposed in an air stream 2 downstream of a centrifugal fan 20. This fan 20 is supplied with AF air that blows towards the device burner 1, to produce, downstream of the burner 1, a heated air AR.

Extérieurement à la veine d'air 2, est disposé un système de mélange 3, qui comprend un ventilateur centrifuge 30 alimenté par le centre d'une part en gaz G et d'autre part en air de combustion AC, et comportant en périphérie un conduit 31 d'éjection du mélange obtenu M, connecté au dispositif de bruleur 1.Externally to the air stream 2, there is a mixing system 3, which comprises a centrifugal fan 30 fed by the center of gas G and on the other hand by combustion air AC, and having on the periphery a conduit 31 for ejecting the resulting mixture M, connected to the burner device 1.

Le dispositif de bruleur 1 selon l'invention comprend un bruleur lamellaire 10 associé à un stabilisateur de flamme 11 qui se présente sous la forme de deux tôles 12 et 13 configurées en V, qui s'évasent à partir du bruleur lamellaire 10 vers l'extérieur de la veine d'air 2.The burner device 1 according to the invention comprises a lamellar burner 10 associated with a flame stabilizer 11 which is in the form of two sheets 12 and 13 configured in V, which flare out from the lamellar burner 10 to the outside the air vein 2.

Le bruleur lamellaire 10 est constitué de plaques empilées, dont une sur deux est perforée. Les plaques sont espacées entre elles en sorte que les non perforées n'obturent pas les perforations de la plaque adjacente, pour permettre la combustion du mélange air-gaz.The lamellar burner 10 consists of stacked plates, of which one in two is perforated. The plates are spaced apart so that the non-perforated holes do not block the perforations of the adjacent plate, to allow the combustion of the air-gas mixture.

Le conduit 31 débouche sur le bruleur lamellaire 10 sur une plaque perforée, perpendiculairement à celle-ci, la combustion se faisant en périphérie des plaques.The conduit 31 opens on the lamellar burner 10 on a perforated plate, perpendicular thereto, the combustion being at the periphery of the plates.

La combinaison bruleur lamellaire 10 / stabilisateur de flamme 11, permet d'obtenir une flamme courte, protégée des turbulences par les tôles perforées 12 et 13.The lamellar burner combination 10 / flame stabilizer 11 makes it possible to obtain a short flame, protected from turbulence by the perforated plates 12 and 13.

La combustion obtenue est meilleure, avec moins de puissance, tandis que la combustion en périphérie permet aux plaques de rester à une température en-dessous des 400°C contrairement aux dispositifs de bruleur existants où la combustion se fait sur le bruleur; ici le brûleur lamellaire 10 ne surchauffe pas et se détériore moins avec le temps.The combustion obtained is better with less power, while the combustion at the periphery allows the plates to remain at a temperature below 400 ° C unlike existing burner devices where the combustion is done on the burner; here the lamellar burner 10 does not overheat and deteriorates less with time.

Claims (3)

Dispositif de bruleur (1) à pré-mélange air/gaz pulsé selon l'invention se caractérise en ce qu'il comprend un bruleur lamellaire (10) associé à un stabilisateur de flamme (11), disposés dans une veine d'air (2), et où : - ledit bruleur lamellaire (10) est constitué d'un empilement de plaques régulièrement espacées, dont une sur deux est perforée, et qui est alimenté en un mélange air/gaz réalisé dans un système de mélange (3) disposé extérieurement à ladite veine d'air (2), et - ledit stabilisateur de flamme (11) se présente sous la forme de deux tôles (12, 13) configurées en V et s'évasant à partir dudit bruleur lamellaire (10). A burner device (1) with a pre-mixed air / gas pulse according to the invention is characterized in that it comprises a lamellar burner (10) associated with a flame stabilizer (11), arranged in a stream of air ( 2), and where: said lamellar burner (10) consists of a stack of regularly spaced plates, one out of two of which is perforated, and which is fed with an air / gas mixture produced in a mixing system (3) disposed externally to said stream of gas. air (2), and - said flame stabilizer (11) is in the form of two sheets (12, 13) configured in V and flaring from said lamellar burner (10). Dispositif de bruleur (1) selon la revendication 1, caractérisé en ce que le système de mélange (3) disposé extérieurement à ladite veine d'air (2) comprend un ventilateur centrifuge (30) alimenté par le centre d'une part en gaz (G) et d'autre part en air de combustion (AC), et comportant en périphérie un conduit (31) d'éjection du mélange obtenu (M), connecté au bruleur lamellaire (10).Burner device (1) according to claim 1, characterized in that the mixing system (3) disposed externally to said air stream (2) comprises a centrifugal fan (30) fed by the center on the one hand gas (G) and secondly in combustion air (AC), and having at the periphery a conduit (31) for ejecting the resulting mixture (M), connected to the lamellar burner (10). Dispositif de bruleur (1) selon la revendication 2, caractérisé en ce que le conduit d'éjection du mélange (31) débouche sur le bruleur lamellaire (10) sur une plaque perforée, perpendiculairement à celle-ci.Burner device (1) according to claim 2, characterized in that the ejection duct of the mixture (31) opens on the lamellar burner (10) on a perforated plate, perpendicularly thereto.
EP19175468.8A 2018-05-18 2019-05-20 Burner device with pulsed air/gas pre-mix Active EP3569927B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1870577A FR3081212A1 (en) 2018-05-18 2018-05-18 AIR / GAS PULSE PRE-MIXING BURNER DEVICE
FR1857637A FR3081210B1 (en) 2018-05-18 2018-08-24 AIR / PULSE GAS PRE-MIX BURNER DEVICE

Publications (3)

Publication Number Publication Date
EP3569927A1 true EP3569927A1 (en) 2019-11-20
EP3569927B1 EP3569927B1 (en) 2023-07-26
EP3569927C0 EP3569927C0 (en) 2023-07-26

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EP19175468.8A Active EP3569927B1 (en) 2018-05-18 2019-05-20 Burner device with pulsed air/gas pre-mix

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3051464A (en) * 1958-10-20 1962-08-28 Maxon Premix Burner Company Air-heating gas burner
EP0560454A2 (en) * 1992-03-12 1993-09-15 Flameco-Eclipse B.V. Gas burner and heating installation provided with a similar gas burner
US6921261B2 (en) * 2000-09-28 2005-07-26 Maxon Corporation Air-heating gas burner
EP2899463A1 (en) * 2014-01-22 2015-07-29 Caledonian Control Technology Limited Flame screen burner assembly
EP2947388A1 (en) * 2013-01-18 2015-11-25 Kyungdong Navien Co., Ltd. Combustion apparatus having air intake preheater

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3051464A (en) * 1958-10-20 1962-08-28 Maxon Premix Burner Company Air-heating gas burner
EP0560454A2 (en) * 1992-03-12 1993-09-15 Flameco-Eclipse B.V. Gas burner and heating installation provided with a similar gas burner
US6921261B2 (en) * 2000-09-28 2005-07-26 Maxon Corporation Air-heating gas burner
EP2947388A1 (en) * 2013-01-18 2015-11-25 Kyungdong Navien Co., Ltd. Combustion apparatus having air intake preheater
EP2899463A1 (en) * 2014-01-22 2015-07-29 Caledonian Control Technology Limited Flame screen burner assembly

Also Published As

Publication number Publication date
EP3569927B1 (en) 2023-07-26
EP3569927C0 (en) 2023-07-26

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