EP0773404A2 - Brûleur - Google Patents

Brûleur Download PDF

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Publication number
EP0773404A2
EP0773404A2 EP96116459A EP96116459A EP0773404A2 EP 0773404 A2 EP0773404 A2 EP 0773404A2 EP 96116459 A EP96116459 A EP 96116459A EP 96116459 A EP96116459 A EP 96116459A EP 0773404 A2 EP0773404 A2 EP 0773404A2
Authority
EP
European Patent Office
Prior art keywords
burner
outlet openings
mixing chamber
burner according
burner head
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Withdrawn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
EP96116459A
Other languages
German (de)
English (en)
Other versions
EP0773404A3 (fr
Inventor
Hans-Joachim Klink
Maarten Johannes Botman
Willem Meijer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0773404A2 publication Critical patent/EP0773404A2/fr
Publication of EP0773404A3 publication Critical patent/EP0773404A3/fr
Withdrawn legal-status Critical Current

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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
    • F23D14/46—Details
    • 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
    • F23D14/02—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
    • F23D14/045—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 a plurality of burner bars assembled together, e.g. in a grid-like arrangement
    • 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
    • F23D14/10—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 elongated tubular burner head
    • F23D14/105—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 elongated tubular burner head with injector axis parallel to the burner head axis
    • 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
    • F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
    • 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
    • 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
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2210/00—Noise abatement

Definitions

  • the invention relates to a burner according to the preamble of the main claim.
  • Such burners are known for example from DE-OS 21 32 968, these burners a large part of the air required for stoichiometric combustion, including primary air, is already provided with the fuel gas injection, so that the burner during the combustion process only to an extent of additional Secondary air is dependent.
  • a problem that generally occurs with burners is the fact that the incineration is subject to increasingly stringent requirements with regard to the emission of human and environmentally harmful substances such as nitrogen oxides (NOx), carbon monoxide (CO) and carbon dioxide (CO 2 ).
  • these burners must be able to be used under widely changing conditions, since gas is essentially a natural product, the quality and composition of which vary depending on the place and time.
  • burners - especially for domestic use - must be controllable in a relatively large area so that they can meet the strongly fluctuating heat requirements.
  • the object of the invention is to produce a low-noise, inexpensive, easily controllable burner suitable for different types of gas, which also has low pollutant emission values.
  • the object is solved by the characterizing features of claim 1. Due to this arrangement, resonance phenomena of the burner are prevented and thus low-noise operation is guaranteed. Furthermore, a stable, fan-shaped flame is generated with a relatively large area, so that the average flame temperature remains relatively low and the pollutant emission is accordingly low.
  • a burner 1 (FIG. 1) consists of a series of mixing chambers 2 arranged in parallel, each consisting of a predominantly U-shaped underside 3, a common rear side 4 and a common front side 5.
  • In the front 5 there are a number of openings 6 through which mixing tubes 7 protrude into the respective mixing chambers 2.
  • Each mixing tube 7 is provided with a streamlined, converging inlet opening 8 and with a diverging diffuser 9, the outlet 10 of the diffuser 9 opening into the mixing chamber 2.
  • the burner 1 is further provided with a series of nozzles 11 which are connected to a central gas supply line 13 via a connecting line 12.
  • the output of the burner 1 can be regulated via a valve 27 arranged in the central gas supply line 13.
  • the gas is supplied to the inlet openings 8 through the nozzles 11, the latter being located at a short distance in front of the respective inlet openings 8. Due to the force of the gas supply, a pressure drop is limited, so that the ambient air is sucked into the inlet opening 8 with the gas. In this way, the mixing chamber 2 a gas-air mixture supplied.
  • the speed at which the gas emerges from the nozzles 11, on the one hand, and the shape and size of the mixing tube 7, on the other hand, are matched to one another in such a way that gas and air are sucked in in an almost stoichiometric - that is, suitable for complete combustion - mixture ratio.
  • Each mixing chamber 2 is closed at the top by a burner head 14, which is roof-shaped and is composed of two obliquely inclined partial surfaces 15, 16, which are connected to each other by a third surface designed as a roof gable 30.
  • a burner head 14 In each burner head 14 there are slot-shaped outlet openings 17, hereinafter called slot openings, which all run almost parallel to one another and are perpendicular to the longitudinal direction of the mixing chamber 2.
  • the slot openings 17 are each arranged in pairs (18), the space 21 between two pair openings (18) arranged in pairs corresponding to approximately 2 to 5 times their width.
  • the slot openings 17 are approximately 1 mm wide, while the space 21 between two slot openings 17 arranged in pairs (18) is approximately 2 to 5 mm. In this space, the two slot openings 17, which are arranged in pairs (18), equalize, that is to say that the vortices which are caused between the two slot openings 17 by the fuel gas / air mixture emerging from a slot opening 17 ignite the fuel gas / air mixture the other slot opening 17 exits, and vice versa.
  • the partial surface 15 of the burner head 14 there are two more slot openings 17 arranged in pairs (18) than on the partial surface 16 of the burner head 14.
  • the slot openings 17 extend from the edges 19 of the burner head 14 into the roof gable 30.
  • the ends 24 of the slot openings 17 arranged in pairs (18) converge. Thereby the flame is prevented from extinguishing as a result of excessive cooling, since the space at the ends 24 is smaller and thus a greater heat intensity is achieved, which in turn has a stabilizing effect on the flame.
  • the flame stabilizing means can also be designed differently. For example, it would be possible to allow the slot openings 17 to run parallel over their entire length and to provide one or more secondary outlet openings 25 at their ends 24 (FIG. 2).
  • These secondary outlet openings 25 have a greater flow resistance than the slit openings 17, so that a relatively low exit velocity of the fuel gas / air mixture occurs even when the burner 1 is subjected to a relatively high load. This prevents the flame from "lifting off” at the cool ends 24, since in this case the combustion speed of the flame would be lower than the exit speed of the fuel gas / air mixture.
  • flame stabilization means 26 are provided in the vicinity of the roof gable 30 in the area between two pairs 18 of slot openings 17 on the partial surface 15, 16 of the burner head opposite the slot openings 17.
  • outlet openings 26 stabilize the flame when the mixing chamber 2 and the burner head 14 are still relatively cool, for example when the burner 1 is ignited again for the first time after it has been out of operation for a long time. Since the flame stabilization means 26 ensure that the burner 1 burns stably again even after a long period of inactivity, this version is suitable for burners in which the output is controlled by switching one or more burner elements formed by the mixing chambers 2 on or off .
  • the burner 1 can be equipped with gas nozzles (not shown), each of which has its own gas supply line. On In this way, one, two or three mixing chambers 2 can be supplied with a gas-air mixture independently of one another, as required. Furthermore, there are 30 additional additional outlet openings 28 in the roof gable, which facilitate the ignition of the fuel gas / air mixture.
  • the paired (18) arrangement of the slot openings 17 results in a fan-shaped flame 23 when the burner 1 is subjected to high loads.
  • the fan shape of the flame 23 creates a relatively large combustion area, so that the specific heat, that is to say the heat of combustion per unit of combustion area and thus the NOx emission are relatively low.
  • the flames 23 practically sink to the burner head 14, arcs of flame forming (FIG. 4), which, however, also have a relatively large combustion area in comparison to other flame shapes, so that low emission values are also achieved in this case .
  • burners in which the outlet openings 17 are arranged as described above are suitable for the combustion of different types of gas with, at the same time, relatively low emission values. In addition, such burners can be easily controlled, while the manufacturing costs are low.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Tires In General (AREA)
EP96116459A 1995-11-09 1996-10-15 Brûleur Withdrawn EP0773404A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19541801 1995-11-09
DE1995141801 DE19541801A1 (de) 1995-11-09 1995-11-09 Brenner

Publications (2)

Publication Number Publication Date
EP0773404A2 true EP0773404A2 (fr) 1997-05-14
EP0773404A3 EP0773404A3 (fr) 1999-01-13

Family

ID=7777034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96116459A Withdrawn EP0773404A3 (fr) 1995-11-09 1996-10-15 Brûleur

Country Status (2)

Country Link
EP (1) EP0773404A3 (fr)
DE (1) DE19541801A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2777978A1 (fr) * 1998-04-28 1999-10-29 Sdecc Rampe de sortie de flammes pour bruleur a gaz atmospherique et a premelange
WO2005059437A1 (fr) * 2003-12-10 2005-06-30 Worgas -Bruciatori - S.R.L. Bruleur a lames dote d'un dispositif d'allumage mutuel
WO2006082169A1 (fr) * 2005-02-02 2006-08-10 Nv Bekaert Sa Tour de torche
WO2008081271A3 (fr) * 2006-12-22 2008-08-28 Worgas Bruciatori Srl Brûleur avec diffuseur résistant à des températures élevées de fonctionnement
WO2014006103A1 (fr) * 2012-07-05 2014-01-09 Giannoni France Bruleur a gaz a combustion de surface
WO2015196504A1 (fr) * 2014-06-27 2015-12-30 艾欧史密斯(中国)热水器有限公司 Brûleur à gaz à prémélange
WO2018165821A1 (fr) * 2017-03-13 2018-09-20 深圳智慧能源技术有限公司 Dispositif de combustion traversant la flamme capable d'améliorer la capacité de traitement de la torche

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB955767A (en) * 1961-07-19 1964-04-22 W App Nfabriek N V As Gas burner
BE709592A (fr) * 1968-01-18 1968-05-30
DE1779127B1 (de) * 1968-07-10 1972-02-03 Vaillant Joh Kg Bunsenbrenner
DE2132968A1 (de) * 1970-07-04 1972-01-13 Guiseppe Fogliani Gasbrenner
NL7508679A (nl) * 1975-07-21 1977-01-25 Remeha Fabrieken Bv Atmosferische gasbrander.
JPH0617729B2 (ja) * 1987-08-03 1994-03-09 ウオルガス ブルチアトリ エセ・エレ・エレ 窒素酸化物及び一酸化炭素の排出量の少ないガスバーナー
DE9005033U1 (de) * 1989-05-09 1990-07-12 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Brennerplatte eines atmosphärischen Brenners
AT399925B (de) * 1991-05-21 1995-08-25 Vaillant Gmbh Brenner

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2777978A1 (fr) * 1998-04-28 1999-10-29 Sdecc Rampe de sortie de flammes pour bruleur a gaz atmospherique et a premelange
EP0953804A1 (fr) * 1998-04-28 1999-11-03 SAUNIER DUVAL EAU CHAUDE CHAUFFAGE S.D.E.C.C. - Société anonyme Rampe de sortie de flammes pour brûleur à gaz atmosphérique et à prémélange
US6123543A (en) * 1998-04-28 2000-09-26 Sauniter Duval Eau Chaude Chauffage Sdecc Flame outlet rail for gas burner of the atmospheric, pre-mix type
WO2005059437A1 (fr) * 2003-12-10 2005-06-30 Worgas -Bruciatori - S.R.L. Bruleur a lames dote d'un dispositif d'allumage mutuel
WO2006082169A1 (fr) * 2005-02-02 2006-08-10 Nv Bekaert Sa Tour de torche
WO2008081271A3 (fr) * 2006-12-22 2008-08-28 Worgas Bruciatori Srl Brûleur avec diffuseur résistant à des températures élevées de fonctionnement
WO2014006103A1 (fr) * 2012-07-05 2014-01-09 Giannoni France Bruleur a gaz a combustion de surface
RU2613105C2 (ru) * 2012-07-05 2017-03-15 Сермета Газовая горелка поверхностного горения
US9885476B2 (en) 2012-07-05 2018-02-06 Sermeta Surface combustion gas burner
WO2015196504A1 (fr) * 2014-06-27 2015-12-30 艾欧史密斯(中国)热水器有限公司 Brûleur à gaz à prémélange
WO2018165821A1 (fr) * 2017-03-13 2018-09-20 深圳智慧能源技术有限公司 Dispositif de combustion traversant la flamme capable d'améliorer la capacité de traitement de la torche

Also Published As

Publication number Publication date
EP0773404A3 (fr) 1999-01-13
DE19541801A1 (de) 1997-05-15

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