JP2666354B2 - Low noise type burner - Google Patents
Low noise type burnerInfo
- Publication number
- JP2666354B2 JP2666354B2 JP63104542A JP10454288A JP2666354B2 JP 2666354 B2 JP2666354 B2 JP 2666354B2 JP 63104542 A JP63104542 A JP 63104542A JP 10454288 A JP10454288 A JP 10454288A JP 2666354 B2 JP2666354 B2 JP 2666354B2
- Authority
- JP
- Japan
- Prior art keywords
- flame
- porous body
- slit
- burner
- holding
- 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.)
- Expired - Fee Related
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
- F23D14/46—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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は給排気ファンを有する燃焼機器のバーナとし
て複数本を並設して使用する高負荷で低騒音のバーナに
関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-load, low-noise burner in which a plurality of burners are used side by side as burners of a combustion apparatus having a supply / exhaust fan.
従来の技術 一般に給排気ファンによる燃焼室内の負圧を利用した
高負荷バーナは二次空気を必要とする主炎と二次空気を
あまり必要としない保炎とのバランスを考えた構成にな
っている。しかし、このバランスがくずれると主炎又は
保炎のリフト現象が生じ、低周波数の燃焼音が大きくな
るため、対策として金網をバーナ本体の主炎となる炎口
部、或いは保炎となる保炎部に被せる構造がとられてい
る。以下図面の第4図、第5図を参照しながら上述した
バーナの一例について説明する。1は上面2に長手方向
と直交したスリットの炎口部3をもったバーナ本体であ
る。4は炎口部3の両側に保炎を形成するため前記バー
ナ本体1の炎口部3の両側に段押しの保炎部5を設け、
保炎部5のない他の平面を前記バーナ本体1にスポット
溶着4aしている保炎板、6は前記バーナ本体1の炎口部
3に接触し両側面部7を前記保炎板4の保炎部5の隙間
にさし込み、かつ前記バーナ本体1の上面2に炎口部3
のある部分を除いて数点スポット溶着6aした逆U字型の
金網である。2. Description of the Related Art In general, a high-load burner that uses a negative pressure in a combustion chamber by a supply / exhaust fan is configured to balance a main flame that requires secondary air and a flame holding that does not require much secondary air. I have. However, if this balance is lost, a lift phenomenon of the main flame or flame holding occurs, and the combustion noise of low frequency becomes loud. As a countermeasure, the wire mesh is used as a flame opening part that becomes the main flame of the burner body, or a flame holding that becomes the flame holding. It has a structure to cover the part. Hereinafter, an example of the above-described burner will be described with reference to FIGS. 4 and 5 of the drawings. Reference numeral 1 denotes a burner main body having a flame opening 3 of a slit on an upper surface 2 perpendicular to the longitudinal direction. Reference numeral 4 denotes a stepped flame holding portion 5 provided on both sides of the flame opening 3 of the burner main body 1 to form flame holding on both sides of the flame opening 3.
A flame-holding plate having another flat surface without the flame-holding portion 5 spot-welded 4a to the burner main body 1 is in contact with the flame opening 3 of the burner main body 1, and both side surfaces 7 are held by the flame-holding plate 4. The burner part 3 is inserted into the gap of the flame part 5 and
This is an inverted U-shaped wire mesh that has been spot-welded 6a except for the portions marked with.
発明が解決しようとする課題 しかしながら上記のような構成では、バーナ本体1の
上面2に金網6をスポット溶着6aするため、燃焼時に金
網6が熱応力を受けて膨張しスポット溶着間で熱収縮
し、金網6の亀裂、変形を起こし、金網6とバーナ本体
1の炎口部3との間に隙間が発生し、燃焼を不安定にす
ると共に、低周波数の燃焼音が高くなるという課題があ
った。However, in the above configuration, since the wire mesh 6 is spot-welded 6a to the upper surface 2 of the burner main body 1, the wire mesh 6 expands due to thermal stress during combustion and thermally contracts between spot welds. The wire mesh 6 is cracked or deformed, and a gap is generated between the wire mesh 6 and the flame opening 3 of the burner main body 1. As a result, the combustion becomes unstable and the combustion noise of low frequency becomes high. Was.
本発明は上記課題に鑑み、金網等の多孔体を自由に伸
び縮みさせ多孔体の亀裂、変形を起こさず燃焼を安定さ
せると共に低い燃焼音での燃焼をおこなう低騒音型バー
ナを提供するものである。In view of the above problems, the present invention provides a low-noise burner that expands and contracts a porous body such as a wire net freely, stabilizes combustion without causing cracks and deformation of the porous body, and performs combustion with low combustion noise. is there.
課題を解決するための手段 本発明は上記目的を達成するために、バーナ本体の炎
口板の上面および側面にわたって逆U字状の多孔体をか
ぶせ、さらにこの多孔体の上から逆U字状の保炎枠をか
ぶせ、そして保炎枠は炎口板上面のスリット炎口の複数
組に対応してその両側に保炎用隙間を形成する保炎部、
この保炎部の隣りであってスリット炎口のない複数組の
間および端部の多孔体を上方より押える押え部、そして
多孔体の下端部を炎口板の側面とではさみ込む階段部を
有し、さらに保炎枠の階段部の下部と炎口板の側面との
数個所を溶着し、多孔体と炎口板の上面一端部とを溶着
したものである。Means for Solving the Problems In order to achieve the above object, the present invention covers an upper surface and a side surface of a burner plate of a burner main body with an inverted U-shaped porous body, and further, from above the porous body, an inverted U-shaped porous body. A flame-holding part that covers the flame-holding frame, and the flame-holding frame forms a flame-holding gap on both sides corresponding to a plurality of sets of slit flame holes on the upper surface of the flame port plate,
A holding part that presses the porous body at the end and between a plurality of sets without slit flame openings next to the flame holding part, and a stair part that sandwiches the lower end of the porous body with the side surface of the flame opening plate. In addition, the lower portion of the staircase portion of the flame holding frame and several portions of the side surface of the flame port plate are welded, and the porous body and one end of the upper surface of the flame port plate are welded.
作用 本発明は上記手段により多孔体が加熱されて膨脹して
も保炎枠の階段部、炎口板の上面では自由に一方向へ伸
びて応力変形がかからないので、炎口板のスリット炎口
とは接触し続け、主炎および保炎ともに安定して生じ
る。The present invention provides a slit flame port of a flame port plate, because even if a porous body is heated and expanded by the above-described means, a step portion of a flame holding frame and an upper surface of a flame port plate are freely extended in one direction and no stress deformation is applied. And the main flame and the flame holding both occur stably.
実施例 以下本発明の一実施例を第1図〜第3図にしたがい説
明する。10は一対の金属板をプレス成形して接合し、一
次空気吸引部11、混合管部12を形成したバーナ本体で、
細長い上面13は開口してある。14はバーナ本体10の上面
開口13を覆蓋した金属の炎口板で、長手方向と直交して
その上面および側面にわたってスリット炎口15を複数個
まとめて形成し、これを一組としてスリット炎口のない
空白部を介して複数組をプレス成形すると同時に逆U字
状に折曲せしめ、そしてU字状による弾性力で上記バー
ナ本体10の側面間に弾着させている。この炎口板14の上
には逆U字状の金網等の多孔体16を全体にかぶせてスリ
ット炎口15のある上面に密接させている。多孔体16はこ
の上から逆U字状の金属板からなる保炎枠17で押えられ
ている。この保炎枠17は炎口板14のスリット炎口15のあ
る部分を打抜いて開口するとともにスリット炎口15のな
いスリット炎口の一組の隣の部分は打抜きをしないで桟
として細長い押え部18を残し、さらにスリット炎口15の
両側には保炎用隙間19を形成する保炎部20と、炎口板14
の側面とで多孔体16の下端部を挟持する階段部21とをプ
レス成形により形成し、かつ逆U字状に折曲する。そし
て、この保炎枠17は多孔体16にかぶせることにより、多
孔体16のスリット炎口15のない一組のスリット炎口15の
隣りの部分に対向する部分は押え部18で上から押えら
れ、そして多孔体16の下端部を階段部21で押え、さらに
多孔体16とは溶着することなく階段部21の下方部で炎口
板14の側面と数箇所でスポット溶着22しているだけであ
る。一方、多孔体16は炎口板14の上面先端中央部でスポ
ット溶着23しているだけである。Embodiment An embodiment of the present invention will be described below with reference to FIGS. 10 is a burner body formed by pressing and joining a pair of metal plates to form a primary air suction section 11 and a mixing pipe section 12,
The elongated upper surface 13 is open. Reference numeral 14 denotes a metal flame plate covering the upper opening 13 of the burner main body 10, and a plurality of slit flame holes 15 are collectively formed over the upper surface and side surfaces of the metal flame plate at right angles to the longitudinal direction. A plurality of sets are press-molded through a blank portion having no gap, are simultaneously bent in an inverted U-shape, and are elastically held between the side surfaces of the burner body 10 by the elastic force of the U-shape. A porous body 16 such as an inverted U-shaped wire mesh is entirely covered on the flame port plate 14 so as to be in close contact with the upper surface having the slit flame port 15. The porous body 16 is pressed from above by a flame holding frame 17 made of an inverted U-shaped metal plate. This flame holding frame 17 is opened by punching out a portion of the slit port 15 of the slit plate 14 with the slit opening 15, and the adjacent part of a set of slit openings without the slit opening 15 is not elongated and is used as an elongated holder as a crosspiece. Part 18, and a flame holding part 20 forming a flame holding gap 19 on both sides of the slit flame opening 15, and a flame opening plate 14.
And a step portion 21 sandwiching the lower end portion of the porous body 16 by press molding, and is bent in an inverted U-shape. Then, by covering the flame holding frame 17 on the porous body 16, a portion of the porous body 16, which is opposed to a portion adjacent to the set of slit flame ports 15 without the slit flame port 15, is pressed from above by the pressing portion 18. Then, the lower end portion of the porous body 16 is pressed by the step portion 21, and the spot weld 22 is formed only at the side of the flame opening plate 14 and at several places below the step portion 21 without welding with the porous body 16. is there. On the other hand, the porous body 16 is only spot-welded 23 at the center of the top end of the upper surface of the flame plate 14.
上記実施例においてガスは一次空気吸引部より流入
し、同時に吸引された一次空気と混合管部12で混合ガス
化され、そしてスリット炎口15、多孔体16を通ってバー
ナ本体1の上方より噴出し、点火手段により点火され二
次空気を周囲よりとりスリット炎口15と保炎用隙間19に
炎が生じる。そして、多孔体16が燃焼によって温度が上
昇すると、多孔体16は炎口板14の上面と保炎枠17の押え
部18の間を拘束されることなく炎口板14の先端上面の中
央部のスポット溶着23とは反対方向へ自由にスリット炎
口15の部分に接しながら熱膨脹する。そして、多孔体16
の下端部も保炎枠17の階段部21に案内されて同じように
熱膨脹により移動する。In the above embodiment, the gas flows in from the primary air suction part, is mixed and gasified with the primary air sucked at the same time in the mixing pipe part 12, and is ejected from above the burner body 1 through the slit flame 15 and the porous body 16. Then, the fuel is ignited by the igniting means, the secondary air is taken from the surroundings, and a flame is generated in the slit flame opening 15 and the flame keeping gap 19. When the temperature of the porous body 16 rises due to combustion, the porous body 16 is not constrained between the upper surface of the flame port plate 14 and the holding portion 18 of the flame holding frame 17 at the center of the upper surface of the tip of the flame port plate 14. Is thermally expanded in the direction opposite to the spot welding 23 while freely contacting the slit flame opening 15. And the porous body 16
Is also guided by the stairs 21 of the flame holding frame 17 and similarly moves by thermal expansion.
したがって、スリット炎口15の部分と多孔体16の間に
は多孔体の熱変形による隙間が生じないので、スリット
炎口15に生じる主炎、保炎用隙間19に生じる保炎は常に
安定する。Therefore, since there is no gap between the slit flame port 15 and the porous body 16 due to thermal deformation of the porous body, the main flame generated in the slit flame port 15 and the flame retention generated in the flame holding gap 19 are always stable. .
発明の効果 以上のように本発明によれば次のような作用効果を奏
する。Effects of the Invention As described above, according to the present invention, the following effects can be obtained.
多孔体は熱膨脹、熱収縮してスリット炎口の面に接
して拘束されることなく自由に一方向へ伸び縮みでき、
多孔体の亀裂、変形、浮上がなくなり安定した燃焼炎が
生じるとともに炎の乱れによる低周波数域での燃焼音も
低減できる。The porous body can expand and contract freely in one direction without being restrained by contacting the surface of the slit flame opening due to thermal expansion and contraction,
Cracking, deformation and surfacing of the porous body are eliminated, and a stable combustion flame is generated, and combustion noise in a low frequency range due to turbulence of the flame can be reduced.
多孔体の下端部は保炎枠の階段部で口板とではさま
れ、かつ階段部の下部が炎口板の側面にスポット溶着さ
れているので、例えば逆風などで燃焼室が正圧になった
場合でもバーナ本体の下方への多孔体からのガス洩れを
防止できる。The lower end of the porous body is sandwiched between the mouth plate and the stairs of the flame holding frame, and the lower part of the stairs is spot-welded to the side of the flame mouth plate. In this case, gas leakage from the porous body below the burner body can be prevented.
第1図は本発明低騒音型バーナの要部欠截の要部側面
図、第2図は同第1図のA−A線の拡大断面図、第3図
は同要部上面図、第4図は従来例の要部上面図、第5図
は同要部拡大断面図である。 10……バーナ本体、14……炎口板、15……スリット炎
口、16……多孔体、17……保炎枠、18……押え部、20…
…保炎部、21……階段部、22,23……スポット溶着。FIG. 1 is a side view of an essential part of the low-noise type burner of the present invention, FIG. 2 is an enlarged sectional view taken along line AA of FIG. 1, FIG. 4 is a top view of a main part of the conventional example, and FIG. 5 is an enlarged sectional view of the main part. 10: Burner body, 14: Flame plate, 15: Slit flame, 16: Porous body, 17: Flame holding frame, 18: Holder, 20
… Flame holding part, 21 …… stair part, 22,23 …… Spot welding.
Claims (1)
バーナ本体の上面開口を覆蓋し、長手方向と直交して上
面に形成したスリット炎口の複数個を一組として複数組
を有する逆U字状の炎口板と、この炎口板の上面および
側面にわたってかぶせた逆U字状の多孔体と、この多孔
体にかぶせ、かつスリット炎口の複数組に対応してその
両側に保炎用隙間を形成する保炎部、この保炎部の隣り
であってスリット炎口のない複数組の間および端部の多
孔体を上方より押える押え部、そして多孔体の下端部を
炎口板の側面とではさむ階段部からなる逆U字状の保炎
枠とを備え、さらに保炎枠の階段部の下部と炎口板の側
面との数個所を溶着し、多孔体と炎口板の上面一端部と
を溶着してなる低騒音型バーナ。An inverted U having a plurality of sets of a burner main body having an elongated upper surface opened and a plurality of slit flame openings which cover the upper surface opening of the burner main body and are formed on the upper surface perpendicular to the longitudinal direction. And a reverse U-shaped porous body over the top and side surfaces of the flame mouth plate, and flame holding on both sides corresponding to a plurality of sets of slit flame mouths. A flame-holding part for forming a gap for use, a holding part for pressing the porous body at the end and between a plurality of sets adjacent to the flame-holding part without a slit flame mouth, and a lower end of the porous body with a flame mouth plate. An inverted U-shaped flame holding frame consisting of a step portion sandwiched between the side surfaces of the flame holding frame, and further welding several portions of a lower portion of the step portion of the flame holding frame and a side surface of the flame port plate to form a porous body and a flame port plate Low-noise burner that is welded to one end of the upper surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63104542A JP2666354B2 (en) | 1988-04-27 | 1988-04-27 | Low noise type burner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63104542A JP2666354B2 (en) | 1988-04-27 | 1988-04-27 | Low noise type burner |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01277104A JPH01277104A (en) | 1989-11-07 |
JP2666354B2 true JP2666354B2 (en) | 1997-10-22 |
Family
ID=14383378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63104542A Expired - Fee Related JP2666354B2 (en) | 1988-04-27 | 1988-04-27 | Low noise type burner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2666354B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0616257Y2 (en) * | 1989-01-28 | 1994-04-27 | リンナイ株式会社 | Gas burner |
IT1399919B1 (en) * | 2010-05-05 | 2013-05-09 | Worgas Bruciatori Srl | GAS BURNER FOR BOILER |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6226411A (en) * | 1985-07-26 | 1987-02-04 | Tokyo Gas Co Ltd | Burner device for high load combustion |
JPH07111244B2 (en) * | 1986-08-18 | 1995-11-29 | 松下電器産業株式会社 | Burner |
-
1988
- 1988-04-27 JP JP63104542A patent/JP2666354B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH01277104A (en) | 1989-11-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |