EP0594262A1 - Gazebrenner - Google Patents

Gazebrenner Download PDF

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Publication number
EP0594262A1
EP0594262A1 EP93202971A EP93202971A EP0594262A1 EP 0594262 A1 EP0594262 A1 EP 0594262A1 EP 93202971 A EP93202971 A EP 93202971A EP 93202971 A EP93202971 A EP 93202971A EP 0594262 A1 EP0594262 A1 EP 0594262A1
Authority
EP
European Patent Office
Prior art keywords
gauze
burner
cupola
burner according
fuel injection
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Withdrawn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
EP93202971A
Other languages
English (en)
French (fr)
Inventor
Willem Jan Vrij
Jozef Johan Slats
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.)
Gastec NV
Original Assignee
Gastec NV
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 Gastec NV filed Critical Gastec NV
Publication of EP0594262A1 publication Critical patent/EP0594262A1/de
Withdrawn legal-status Critical Current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
    • F23D14/02—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
    • 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
    • F23D14/12—Radiant burners
    • F23D14/14—Radiant burners using screens or perforated plates
    • F23D14/149—Radiant burners using screens or perforated plates with wires, threads or gauzes as radiation intensifying means
    • 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
    • F23D14/82—Preventing flashback or blowback
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/101—Flame diffusing means characterised by surface shape
    • F23D2203/1012—Flame diffusing means characterised by surface shape tubular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/103—Flame diffusing means using screens

Definitions

  • This invention relates to a burner which can optionally be used as premix burner, but is intended in particular for use in gas appliances with partly premixed or so-called atmospheric burners.
  • the object of the present invention is to provide an atmospheric burner which enables a low NO x emission and also a low CO production to be obtained without costly measures.
  • a gas/air mixing chamber is bounded on one side by a continuous guiding wall element and on the other side and at the top by a wall of heat-resistant gauze.
  • the gauze In addition to the function of cooling the flame, the gauze has a flow-control function.
  • the gauze By choosing gauze with a relatively high net passage percentage, depending on the type of gas, of the order of magnitude of 27 mesh, the gauze provides sufficient resistance to the mixture flowing through, on the one hand to ensure proper admixture of primary air in the mixing chamber and on the other to prevent flashback of the flame.
  • the burner according to the invention is designed as a cupola burner comprising a base ring which is designed as a substantially circular gas injector, above which a mixing chamber is bounded on the radial inside by a continuous cupola and on the outside by a gauze cupola arranged concentrically around it.
  • the flame is stabilized at a very short distance from the gauze (order of magnitude of 1 mm) at a burning height of 50 mm and predominantly low NO x emissions ⁇ 20 ppm can be attained by virtue of the flame cooling described.
  • the burner according to the invention is eminently suitable for use in flow-through appliances, such as a gas water heater, where the furnace load is relatively high (approx. 3500 kW/m3).
  • the specific burner load remains relatively low, viz. approx. 250 kW/m2.
  • the circular gas injector may be designed with a series of fuel injection nozzles uniformly distributed over the base ring, these injection nozzles being fed from a chamber present in the base ring.
  • annular gap may be formed by two concentric rings above the fuel injection nozzles, through which annular gap gas is guided into the mixing chamber.
  • the cupola burner may be provided, at the lower end of the gauze cupola, with an anti-flashback baffle which may have the form of a ring extending laterally around the base ring, downwards from the lower end of the gauze cupola, or may be designed as a gauze wall extending laterally from the lower end of the gauze cupola.
  • the gauze burner can be designed as an in-line burner comprising an elongate burner tube with two parallel rows of fuel injection nozzles, the continuous guiding wall element being designed as an upright wall arranged between, the rows of nozzles and the assembly being surrounded by a rectangular gauze cage.
  • the burner according to the invention is an atmospheric radiation burner which provides the above-mentioned advantages of a ceramic radiation burner without the above-mentioned disadvantages thereof.
  • the gauze burner according to the invention in the design of a cupola burner comprises a substantially circular gas injector in the form of a base ring 1 and, above it, a dome-shaped continuous, metal guiding wall element 2 and a dome-shaped gauze cupola 3 arranged around it, concentrically spaced therefrom.
  • the gauze cupola 3 comprises an upright cylindrical section 3a, whose height is of the same order of magnitude as the diameter.
  • the cylindrical cupola section 3a merges into an end wall section 3c via a rounded transition 3b.
  • Fig. 1 further shows a furnace wall 4 and a heat exchanger 5.
  • the base ring 1 comprises at the top thereof a series of gas blast nozzles 6, which are fed from a chamber 7 present in the ring 1.
  • the ring 1 is located under a space 8, to be designated as mixing chamber, between the continuous metal cupola 2 and the gauze cupola 3.
  • Fig. 1A it is indicated that the uniform distribution in circumferential direction of the gas egressing from the blast nozzles can be further improved by means of two concentric rings 9, 9' defining a passage gap 10.
  • Fig. 1 further indicates a screen 11, by which flashback in downward direction can be prevented.
  • An alternative is indicated in Fig. 1B, where the screen ring 11 has been replaced with a gauze wall screen 12.
  • Fig. 2 shows the gauze burner according to the invention in the form of an in-line burner. Equivalent parts are indicated by the same reference numerals as in Fig. 1, but increased by 100.
  • a bar-shaped gas injector 101 comprises a double row of fuel injection nozzles 106.
  • the nozzles 106 are fed from a chamber 107 present in the bar 101, whilst the chamber 107 is provided halfway with a partition 13 and gas is supplied from two sides (see arrows G), so as to enable all of the nozzles 106 to be supplied as evenly as possible.
  • two mixing chambers 108 are bounded by a continuous metal guiding plate 102 and a wire gauze 103.
  • the operation of the bar burner according to Fig. 2 is comparable to that of the cupola burner according Fig. 1.
EP93202971A 1992-10-23 1993-10-22 Gazebrenner Withdrawn EP0594262A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9201847 1992-10-23
NL9201847A NL9201847A (nl) 1992-10-23 1992-10-23 Gaasbrander.

Publications (1)

Publication Number Publication Date
EP0594262A1 true EP0594262A1 (de) 1994-04-27

Family

ID=19861421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93202971A Withdrawn EP0594262A1 (de) 1992-10-23 1993-10-22 Gazebrenner

Country Status (2)

Country Link
EP (1) EP0594262A1 (de)
NL (1) NL9201847A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT401561B (de) * 1994-09-05 1996-10-25 Vaillant Gmbh Atmosphärischer gasbrenner
WO2004092647A1 (en) * 2003-04-18 2004-10-28 N.V. Bekaert S.A. A metal burner membrane
WO2009077505A3 (en) * 2007-12-17 2010-07-08 Bekaert Combust. Technologie. B.V. New premix burner
EP2942564A1 (de) * 2014-05-07 2015-11-11 Worgas Burners Limited Gasbrenner
CN106122960A (zh) * 2016-04-15 2016-11-16 潘婵 一种内置气体均布器引射器的大气式管状燃烧器
CN106524151A (zh) * 2016-10-26 2017-03-22 中山市三诺燃气具有限公司 一种高效360度燃烧器
CN110621934A (zh) * 2017-05-24 2019-12-27 贝卡尔特燃烧技术股份有限公司 内部点火预混合气体燃烧器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10876744B2 (en) * 2017-03-13 2020-12-29 Rheem Manufacturing Company Fuel enrichment system for fuel-fired appliance

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2597062A (en) * 1949-03-10 1952-05-20 Cardella Salvatore Internally fired sheet metal gas burner
US3091284A (en) * 1960-03-08 1963-05-28 Smith Corp A O Gas burner
JPS604718A (ja) * 1983-06-21 1985-01-11 Matsushita Electric Ind Co Ltd 表面燃焼バ−ナ
JPS6026210A (ja) * 1983-07-20 1985-02-09 Matsushita Electric Ind Co Ltd ガスバ−ナ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2597062A (en) * 1949-03-10 1952-05-20 Cardella Salvatore Internally fired sheet metal gas burner
US3091284A (en) * 1960-03-08 1963-05-28 Smith Corp A O Gas burner
JPS604718A (ja) * 1983-06-21 1985-01-11 Matsushita Electric Ind Co Ltd 表面燃焼バ−ナ
JPS6026210A (ja) * 1983-07-20 1985-02-09 Matsushita Electric Ind Co Ltd ガスバ−ナ

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 9, no. 117 (M - 381) 22 May 1985 (1985-05-22) *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 149 (M - 390) 25 June 1985 (1985-06-25) *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT401561B (de) * 1994-09-05 1996-10-25 Vaillant Gmbh Atmosphärischer gasbrenner
WO2004092647A1 (en) * 2003-04-18 2004-10-28 N.V. Bekaert S.A. A metal burner membrane
CN100557310C (zh) * 2003-04-18 2009-11-04 贝卡尔特股份有限公司 气体燃烧室
WO2009077505A3 (en) * 2007-12-17 2010-07-08 Bekaert Combust. Technologie. B.V. New premix burner
US8197251B2 (en) 2007-12-17 2012-06-12 Bekaert Combustion Technology B.V. Premix burner
CN101918763B (zh) * 2007-12-17 2012-06-27 贝卡尔特燃烧技术股份有限公司 新式预混燃烧器
EP2942564A1 (de) * 2014-05-07 2015-11-11 Worgas Burners Limited Gasbrenner
CN106122960A (zh) * 2016-04-15 2016-11-16 潘婵 一种内置气体均布器引射器的大气式管状燃烧器
CN106122960B (zh) * 2016-04-15 2019-09-27 潘婵 一种内置气体均布器引射器的大气式管状燃烧器
CN106524151A (zh) * 2016-10-26 2017-03-22 中山市三诺燃气具有限公司 一种高效360度燃烧器
CN110621934A (zh) * 2017-05-24 2019-12-27 贝卡尔特燃烧技术股份有限公司 内部点火预混合气体燃烧器

Also Published As

Publication number Publication date
NL9201847A (nl) 1994-05-16

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