WO2008004734A1 - Structure à flammes d'un brûleur à gaz - Google Patents

Structure à flammes d'un brûleur à gaz Download PDF

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Publication number
WO2008004734A1
WO2008004734A1 PCT/KR2006/005867 KR2006005867W WO2008004734A1 WO 2008004734 A1 WO2008004734 A1 WO 2008004734A1 KR 2006005867 W KR2006005867 W KR 2006005867W WO 2008004734 A1 WO2008004734 A1 WO 2008004734A1
Authority
WO
WIPO (PCT)
Prior art keywords
fire hole
fire
part structure
pieces
flame
Prior art date
Application number
PCT/KR2006/005867
Other languages
English (en)
Inventor
Eun Seong Cho
Seung Beom Cho
Original Assignee
Kyung Dong Navien Co., Ltd.
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 Kyung Dong Navien Co., Ltd. filed Critical Kyung Dong Navien Co., Ltd.
Priority to US12/307,914 priority Critical patent/US20090291402A1/en
Priority to JP2009519357A priority patent/JP5200016B2/ja
Priority to EP06835567.6A priority patent/EP2041490A4/fr
Priority to CN2006800553751A priority patent/CN101495806B/zh
Publication of WO2008004734A1 publication Critical patent/WO2008004734A1/fr

Links

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
    • F23D14/08—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 axial outlets at the burner head
    • 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
    • F23D14/46—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
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • F23D14/583—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration of elongated shape, e.g. slits
    • F23D14/586—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration of elongated shape, e.g. slits formed by a set of sheets, strips, ribbons or the like
    • 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
    • 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
    • F23D2203/1017—Flame diffusing means characterised by surface shape curved
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/102—Flame diffusing means using perforated plates
    • F23D2203/1026—Flame diffusing means using perforated plates with slotshaped openings

Definitions

  • the present invention relates to a fire hole part structure of a gas burner, which can improve flame stability through impingement injection of flame through fire holes and can reduce the generation of incomplete combustion products.
  • the premixing ignition type burner has a fire hole part which has defined therein a plurality of fire holes for injecting the premixture of fuel gas and air to thereby produce flame.
  • a conventional fire hole part has a structure in which fire holes are defined through a single plate member comprising a flat plate or a cylindrical plate.
  • the conventional fire hole part structure has problems in that the combustion surface thereof is likely to be distorted or the shape of the fire holes is likely to be changed due to deformation by thermal stress, whereby incomplete combustion or backfiring can be caused.
  • a fire hole part structure which employs a metal fiber mat formed by weaving metal fiber, or a ceramic plate formed by sintering ceramic, has been disclosed in the art.
  • this structure incurs substantial material costs, and the manufacturing procedure is complicated, so that the manufacturing costs are increased.
  • the configuration of a premixer is complex, pressure loss increases, the flame is unstable, and noise occurs.
  • the fire hole part structure suffers from defects due to the characteristics of the material thereof.
  • the metal fiber mat since it has a certain degree of softness, the combustion surface and fire holes are likely to be distorted due to deformation by the application of force upon assembly and due to drooping after installation.
  • the sintered ceramic plate as condensed water drips from the h eat exchanger, arranged above the ceramic plate, the fire hole part can be adversely affected.
  • FIG. 1 illustrates another conventional fire hole part structure for a gas burner, which is formed at a reduced cost using a metal plate and can solve the problems caused by deformation due to thermal stress.
  • a plurality of fire hole pieces 120 is installed in a parallel arrangement in mounting openings 110 which are defined in the upper end of a burner body 100.
  • Each fire hole piece 120 is bent so as to define an elongate channel which substantially has the sectional shape of a U rotated 180° so that it opens downward.
  • a plurality of fire holes 121 is defined at regular intervals through the upper surface of each fire hole piece 120. Both ends of each fire hole piece 120 are fastened to the burner body 100 by fastening covers 123 and bolts.
  • the flame of a premixing ignition burner has narrow limits of inflammability, unlike the diffusion flame of a Bunsen burner.
  • flames are not produced at an excess air factor of 1.6 or greater.
  • fuel and air are not ideally mixed in the premixing ignition burner, flame can be produced even at an excess air factor of 1.7, but in this case, the flame lifts off the burner and becomes unstable.
  • an object of the present invention is to provide a fire hole part structure of a gas burner, which is constructed to be manufactured at a low cost, can improve flame stability, and can prevent incomplete combustion attributable to the length of flame.
  • FIG. 1 is a perspective view illustrating a conventional fire hole part structure of a gas burner
  • FIG. 2 is a perspective view illustrating a fire hole part structure of a gas burner in accordance with a first embodiment of the present invention
  • FIG. 3 is cross-sectional view illustrating the main portion of the fire hole part stru cture shown in FIG. 2;
  • FIG. 4 is a perspective view illustrating a fire hole part structure of a gas burner in accordance with a second embodiment of the present invention
  • FIG. 5 is a perspective view illustrating a fire hole part structure of a gas burner in accordance with a third embodiment of the present invention.
  • FIG. 6 is a perspective view illustrating a fire hole part structure of a gas burner in accordance with a fourth embodiment of the present invention.
  • FIG. 7 is a perspective view illustrating a fire hole part structure of a gas burner in accordance with a fifth embodiment of the present invention.
  • FIG. 8 is a perspective view illustrating a fire hole part structure of a gas burner in accordance with a sixth embodiment of the present invention.
  • FIG. 9 is a perspective view illustrating a fire hole part structure of a gas burner in accordance with a seventh embodiment of the present invention. Best Mode for Carrying Out the Invention
  • a fire hole part structure provided to a premixing ignition burner which is installed to apply heat to the heat exchanger of a boiler, and including a plurality of fire hole pieces which are installed parallel to one another in mounting openings of a burner body and each of which is defined with a number of fire holes at regular intervals, wherein an upper wall of at least one of the fire hole pieces is bent or curved to extend in at least two directions, and the fire holes are defined through respective surface portions of the upper wall, which extend in different directions, to face different directions.
  • FIG. 2 is a perspective view illustrating a fire hole part structure of a gas burner in accordance with a first embodiment of the present invention
  • FIG. 3 is cross- sectional view illustrating the main portion of the fire hole part structure shown in FIG. 2.
  • fire hole pieces 20 are installed parallel to and adjacent to one another in a plurality of mounting openings 13 which are defined in the upper portion of a burner body 11.
  • the burner body 11 is a conventional one. While not shown in the drawings, a manifold, in which fuel gas and air are mixed with each other, is coupled to the lower portion of the burner body 11. A gas supply pipe for supplying fuel and a blower for supplying air are coupled to the manifold. Since the burner body 11 has a conventional configuration, detailed description thereof will be omitted herein.
  • Each premixture accommodating space 14 is opened upward, and the upper end thereof defines the mounting opening 13.
  • Each fire hole piece 20 has an upper wall 21 which is bent along the center portion thereof in the lengthwise direction thereof, and defines a channel which is opened downward.
  • the upper wall 21 is bent to have a wedge-shaped section which projects upward.
  • the plurality of fire holes 23 is defined through surface portions which are divided by a bending line 24 in a manner such that the discharge directions of premixture through the fire holes 23 are inclined with respect to the vertical direction.
  • the fire holes 23 defined in both sides of the bending line 24 are arranged to be staggered with each other.
  • Fastening holes 16 are defined in the burner body 11 adjacent to both lengthwise ends of the mounting openings 13. Support lips 27 to be received in the fastening holes 16 are formed on both lengthwise ends of the fire hole pieces 20. As fastening plates 15 are locked to the burner body 11 by bolts 17 in such a way as to press the support lips 27, the fire hole pieces 20 are fastened to the burner body 11. A plurality of grooves 25 is defined in the sidewalls of the fire hole pieces 20 to prevent distortion of the fire hole pieces 20 due to thermal stress and to promote cooling of the fire hole pieces 20.
  • each fire hole piece 20 is bent such that two inclined surface portions extending in different directions are formed, and the fire holes 23 are defined through the two inclined surface portions. Therefore, as shown in FIG. 3, the injection direction of the flame created through each fire hole 23 is inclined with respect to the vertical direction, and the two flames injected through the two facing fire holes 23 of adjoining fire hole pieces 20 interfere with each other, by which flame stabilizing means is formed.
  • the fire hole piece 20 was illustrated as being bent to have a wedge-shaped section that projects upward, it is to be readily understood that the present invention is not limited to this concrete example. Therefore, the upper wall 21 of the fire hole piece 20 can be bent or curved to have various sections so that the fire holes 23 defined through the fire hole pieces 20 face at least two different directions. For example, as shown in FIG. 8, the upper wall 21 of the fire hole piece 20 can be bent downward toward the inside of the burner body 11 in a manner such that the upper surface of each fire hole piece 20 has a wedge-shaped section, similar to the above-described embodiment, but the bending line 24 is depressed downward, unlike the above-described embodiment.
  • each fire hole piece 20 can be curved upward in a manner such that the upper surface of each fire hole piece 20 has an arc-shaped section.
  • the plurality of fire holes 23 is defined at two or more positions on the upper surface thereof to face directions which are inclined with respect to the vertical direction. Even in this sectional shape, similar to the wedge-shaped section described just above, the upper wall 21 can be curved downward toward the inside of the burner housing 11, as shown in FIG. 9.
  • the fire hole pieces 20 may not have the same sectional shape.
  • fire hole pieces 20a each having a flat upper surface, similar to the conventional fire hole piece 120 and three-dimensional fire hole pieces 20, each having an upper wall 21 which is bent or curved, as described above, can be alternately arranged with each other. That is to say, differently shaped fire hole pieces 20 and 20a can be alternately arranged with each other.
  • the fire hole pieces 20 and 20a are arranged as shown in FIG. 5, since both side portions of the flame, which is created through the flat type fire hole piece 20a, interfere with the flames which are created through two adjoining three-dimensional fire hole pieces 20, the flame holding characteristic and flame stability, as described above, can be improved, and impingement angle and the interval of flame can be easily adjusted within a wide range.
  • each fire hole piece 20 can be configured in a manner such that the surface portion, which faces the center of the fire hole part, is formed as an inclined surface 28, the surface portion, which faces away from the center of the fire hole part, is formed as a vertical surface 29 to be brought into contact with the wall of the burner body 11, and the fire holes 23 are defined only through the inclined surface 28.
  • the respective fire hole pieces 20 are formed of individually separated plate members, as the case may be, as shown in FIG. 7, a single plate member can be bent so that the plurality of fire hole pieces 20 can be integrally connected with one another. Even in this case, since the upper surfaces 21 of the respective fire hole pieces 20 are bent or curved, the deformation strength of the fire hole part structure can be improved. Also, because a plurality of grooves 25 is defined in the sidewalls of the integrated fire hole pieces 20 to disperse thermal stress, even though the respective fire hole pieces 20 are not separated from one another, deformation due to thermal stress is decreased compared to the conventional fire hole part structure formed of the flat plates.
  • the present invention can provide a fire hole part structure of a gas burner, which is constructed to be manufactured at low cost, can improve flame stability, and can prevent incomplete combustion due to the length of a flame.

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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)

Abstract

La présente invention concerne une structure à parties à orifices de sortie pour un brûleur à gaz. L'objectif de cette invention est de mettre au point une telle structure qui soit économique, présente une meilleure stabilité des flammes et empêche une combustion incomplète due à la longueur de flamme. A cette fin, ladite structure présente un brûleur d'allumage de prémélange qui est conçu pour fournir de la chaleur à un échangeur thermique d'une chaudière et qui comprend des parties à orifices de sortie (20) montées en parallèle les unes aux autres dans des ouvertures de montage (13) d'un corps de brûleur (11), chacune comportant des orifices de sortie (23) à intervalles réguliers. Une paroi supérieure (21) d'au moins une des parties à orifices de sortie (20) est pliée ou incurvée de manière à s'étendre dans au moins deux directions et les orifices de sortie (23) sont définis à travers des parties de surface respectives de la paroi supérieure (21) qui s'étendent dans des directions différentes, face aux différentes directions.
PCT/KR2006/005867 2006-07-07 2006-12-29 Structure à flammes d'un brûleur à gaz WO2008004734A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US12/307,914 US20090291402A1 (en) 2006-07-07 2006-12-29 Flame structure of gas burner
JP2009519357A JP5200016B2 (ja) 2006-07-07 2006-12-29 ガスバーナーの炎孔部構造
EP06835567.6A EP2041490A4 (fr) 2006-07-07 2006-12-29 Structure à flammes d'un brûleur à gaz
CN2006800553751A CN101495806B (zh) 2006-07-07 2006-12-29 气体燃烧器的火焰装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020060063967A KR100778716B1 (ko) 2006-07-07 2006-07-07 가스버너의 염공부 구조
KR10-2006-0063967 2006-07-07

Publications (1)

Publication Number Publication Date
WO2008004734A1 true WO2008004734A1 (fr) 2008-01-10

Family

ID=38894683

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2006/005867 WO2008004734A1 (fr) 2006-07-07 2006-12-29 Structure à flammes d'un brûleur à gaz

Country Status (6)

Country Link
US (1) US20090291402A1 (fr)
EP (1) EP2041490A4 (fr)
JP (1) JP5200016B2 (fr)
KR (1) KR100778716B1 (fr)
CN (1) CN101495806B (fr)
WO (1) WO2008004734A1 (fr)

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JP4934696B2 (ja) * 2009-03-26 2012-05-16 株式会社日立製作所 バーナ及び燃焼器
KR101241788B1 (ko) 2010-10-29 2013-03-14 린나이코리아 주식회사 예혼합 연소버너의 냉각장치
US8827693B2 (en) * 2011-10-17 2014-09-09 Rinnai Corporation Totally aerated combustion burner
ITPD20120282A1 (it) * 2012-09-27 2014-03-28 Systema Polska Sp Zo O Testa di combustione a gas per bruciatori premiscelati
KR101468940B1 (ko) * 2013-11-15 2014-12-04 주식회사 경동나비엔 과농 희박 연소장치
KR101638997B1 (ko) * 2013-11-22 2016-07-12 한국항공우주연구원 연소실 분사기면
JP2016084955A (ja) * 2014-10-24 2016-05-19 リンナイ株式会社 燃焼プレート
US11378273B2 (en) * 2017-01-11 2022-07-05 A. O. Smith Corporation Reduced resonance burner
CN109990286B (zh) * 2017-12-29 2024-02-23 芜湖美的厨卫电器制造有限公司 燃烧器及燃气热水器
CN110107900B (zh) * 2019-05-25 2023-10-27 杨锡奇 一种燃气混合燃烧器
CN110762528B (zh) * 2019-10-30 2021-01-12 宁波方太厨具有限公司 灶具火盖
CN112880199A (zh) * 2019-11-29 2021-06-01 芜湖美的厨卫电器制造有限公司 火排单体、燃烧器和燃气设备
KR102365634B1 (ko) * 2020-05-19 2022-02-18 린나이코리아 주식회사 보일러용 메탈파이버버너
CN113566235B (zh) * 2021-08-06 2022-10-14 山东多乐新能源科技有限责任公司 全预混燃气锅炉点火装置
KR102583225B1 (ko) 2022-02-07 2023-09-25 두산에너빌리티 주식회사 마이크로 믹서 및 이를 포함하는 가스 터빈
CN116293667B (zh) * 2023-04-07 2024-01-30 西安交通大学 一种具有倾斜高低错列式火孔板的燃烧器

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Publication number Priority date Publication date Assignee Title
JP2011021819A (ja) * 2009-07-16 2011-02-03 Rinnai Corp バーナ装置

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CN101495806A (zh) 2009-07-29
KR100778716B1 (ko) 2007-11-22
JP2010501818A (ja) 2010-01-21
EP2041490A1 (fr) 2009-04-01
US20090291402A1 (en) 2009-11-26
JP5200016B2 (ja) 2013-05-15
EP2041490A4 (fr) 2013-11-20
CN101495806B (zh) 2012-06-06

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