JPH0434044B2 - - Google Patents
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- Publication number
- JPH0434044B2 JPH0434044B2 JP58155264A JP15526483A JPH0434044B2 JP H0434044 B2 JPH0434044 B2 JP H0434044B2 JP 58155264 A JP58155264 A JP 58155264A JP 15526483 A JP15526483 A JP 15526483A JP H0434044 B2 JPH0434044 B2 JP H0434044B2
- Authority
- JP
- Japan
- Prior art keywords
- mixed gas
- air
- combustion
- opening
- ejection
- 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 - Lifetime
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- Gas Burners (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、燃焼ガスと燃焼用空気との混合ガス
を噴出して噴出混合ガスを燃焼させる混合ガス噴
出口を設け、この混合ガス噴出口の近傍から混合
ガス噴出方向にほぼ沿う方向に延びる壁面を設
け、前記混合ガス噴出口からの噴出混合ガス経路
に向けて燃焼用二次空気を噴出する空気噴出開口
を、混合ガス噴出方向に延びる列状に配置して前
記壁面に形成したバーナに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a mixed gas jetting port that jets out a mixed gas of combustion gas and combustion air and burns the jetted mixed gas, and the mixed gas jetting port A wall surface extending in a direction substantially along the mixed gas ejection direction from the vicinity of the mixed gas ejection opening is provided, and an air ejection opening for ejecting secondary air for combustion toward the mixed gas ejection path from the mixed gas ejection port extends in the mixed gas ejection direction. The present invention relates to burners arranged in rows and formed on the wall surface.
従来、かかるバーナにおいて、混合ガス噴出方
向に延びる列状配置の空気噴出開口を形成する
に、混合ガス噴出口の近傍から混合ガス噴出方向
にほぼ沿う方向に延設した壁面に対し、混合ガス
の噴出方向の上流側端から下流側端にわたり等径
の空気噴出開口を均一に列状配置していた（実開
昭52−98240号公報参照）。
Conventionally, in such a burner, in order to form the air ejection openings arranged in a row extending in the mixed gas ejection direction, the mixed gas is ejected against a wall surface extending from the vicinity of the mixed gas ejection port in a direction substantially along the mixed gas ejection direction. Air ejection openings of equal diameter were arranged uniformly in a row from the upstream end to the downstream end in the ejection direction (see Japanese Utility Model Publication No. 52-98240).
しかしながら、上述の従来構成のバーナでは、
混合ガス噴出口からの噴出混合ガス経路に対し、
その上流側から下流側にわたつて、等径の空気噴
出開口夫々から燃焼用二次空気が吹きつけられる
ことになる。
However, in the conventional burner configuration described above,
For the mixed gas path ejected from the mixed gas outlet,
Combustion secondary air is blown from the air jet openings having the same diameter from the upstream side to the downstream side.
従つて、噴出混合ガスに対して燃焼用二次空気
が空気噴出開口夫々から局所的に吹きつけられる
ために、火炎の形成が不安定となり燃焼の不安定
化を招く問題があつた。 Therefore, since the combustion secondary air is locally blown against the ejected mixed gas from each of the air ejection openings, there is a problem in that flame formation becomes unstable and combustion becomes unstable.
又、火炎の基部から先端にわたつて、一様な量
で燃焼用二次空気が吹きつけられるので、燃焼を
充分に達成させるだけの二次空気の量を供給する
と、未だ燃焼が不安定な火炎基部に対する二次空
気の吹きつけの勢いが過大となつて、火炎が混合
ガス噴出口から飛び離れてしまう（リフトオフ）
等、又、火炎先端部に対する二次空気吹きつけの
勢いも過大となつて、火炎の先端部がふらつく等
のいずれも燃焼の不安定化を招く問題があつた。 Also, since a uniform amount of secondary air for combustion is blown from the base to the tip of the flame, if enough secondary air is supplied to achieve sufficient combustion, combustion may still be unstable. The force of secondary air blowing against the flame base becomes excessive, causing the flame to fly away from the mixed gas outlet (lift-off).
In addition, the force of the secondary air blowing against the flame tip becomes excessive, causing the flame tip to wobble, all of which lead to unstable combustion.
又、空気噴出開口の列状配置における中間部に
おいて噴出混合ガスのほぼ全量を燃焼させるに
は、中間部における二次空気供給量が少ないの
で、噴出混合ガスの全量を燃焼させることができ
る位置が、前記中間部より混合ガス噴出先方にか
なり離れた位置となるため形成火炎が長くなつ
て、高負荷燃焼を実現するための短火炎燃焼を充
分に行わせることができないという問題があつ
た。 In addition, in order to burn almost the entire amount of the jetted mixed gas in the middle part of the row arrangement of air jetting openings, the amount of secondary air supplied in the middle part is small, so it is necessary to find a position where the entire amount of the jetted mixed gas can be combusted. Since the mixed gas is located far away from the intermediate portion, the flame formed becomes long, and short flame combustion cannot be sufficiently performed to achieve high-load combustion.
本発明は、上記の実情に鑑みてなされたもので
あり、その目的は、列状の配置する空気噴出開口
の合理的な改良により、上記各問題点を一挙に解
決し、バーナの燃焼性能の向上を図る点にある。 The present invention has been made in view of the above-mentioned circumstances, and its purpose is to solve each of the above-mentioned problems at once by rationally improving the air jet openings arranged in rows, and to improve the combustion performance of the burner. The goal is to improve.
本発明によるバーナの特徴構成は、前記空気噴
出開口の列状配置形態として、前記空気噴出開口
を混合ガス噴出方向に延びる一連のスリツト状開
口に形成し、このスリツト状開口の長手方向中間
部に、混合ガス噴出方向の上流側端部及び下流側
端部夫々の開口巾よりも巾広の巾広開口部を形成
してあることにあり、その作用・効果は次の通り
である。
The characteristic configuration of the burner according to the present invention is such that the air jet openings are arranged in a row, and the air jet openings are formed into a series of slit-shaped openings extending in the mixed gas jetting direction, and the air jet openings are formed in a series of slit-shaped openings extending in the direction in which the mixed gas is jetted. , a wide opening is formed that is wider than the respective opening widths of the upstream end and the downstream end in the mixed gas jetting direction, and its functions and effects are as follows.
混合ガス噴出口の近傍から混合ガス噴出方向に
ほぼ沿う方向に延びる壁面に列状に配置形成する
空気噴出開口において、混合ガス噴出方向に延び
る一連のスリツト状開口に形成することにより、
従来の如き、噴出混合ガスに対して等径の空気噴
出開口夫々から局所的に燃焼用二次空気が吹きつ
けるのではなく、噴出混合ガスの上流側から下流
側にわたつて均一に供給できるので、火炎の形成
が安定する。
By forming a series of slit-like openings extending in the mixed gas jetting direction in the air jetting openings arranged in rows on the wall surface extending from the vicinity of the mixed gas jetting port in a direction substantially along the mixed gas jetting direction,
Unlike in the past, secondary combustion air is not locally blown against the jetted mixed gas from each air jet opening of the same diameter, but can be uniformly supplied from the upstream side to the downstream side of the jetted mixed gas. , the flame formation becomes stable.
又、スリツト状開口の長手方向中間部に、混合
ガス噴出方向の上流側端部及び下流側端部夫々の
開口巾よりも巾広の巾広開口部を形成する、言い
換えれば、上流側端部及び下流側端部夫々の開口
巾を巾狭とすることにより、火炎の基部に対する
二次空気吹きつけの勢いを減殺して、火炎が混合
ガス噴出口からリフトオフしないような状態で、
且つ、火炎先端部に対する二次空気吹きつけの勢
いも減殺して、火炎の先端部がふらつかないよう
な状態で二次空気を供給している。 In addition, a wide opening wider than the respective opening widths of the upstream end and the downstream end in the mixed gas jetting direction is formed in the longitudinally intermediate part of the slit-shaped opening. In other words, the upstream end By narrowing the opening width of each of the downstream end and the downstream end, the force of secondary air blowing against the base of the flame is reduced, and the flame does not lift off from the mixed gas outlet,
In addition, the force of blowing the secondary air against the flame tip is also reduced, and the secondary air is supplied in such a manner that the flame tip does not wobble.
しかも、スリツト状開口の長手方向中間部の巾
広開口部から、噴出混合ガスを完全燃焼させるに
充分な量の二次空気を供給することにより、噴出
混合ガスの全量を燃焼させることができる位置
を、可及的に混合ガス噴出口方向に近づけること
ができることとなる。 Furthermore, by supplying a sufficient amount of secondary air to completely burn the blown mixed gas from the wide opening in the longitudinally intermediate part of the slit-shaped opening, the position is such that the entire amount of the blown mixed gas can be combusted. can be brought as close as possible to the direction of the mixed gas outlet.
その結果、バーナの燃焼安定性を著しく向上し
得るとともに、短火炎燃焼を効果的に行わせるこ
とができるに至つた。
As a result, the combustion stability of the burner can be significantly improved, and short flame combustion can be effectively performed.
次に本発明による実施例を図面に基づいて説明
する。
Next, embodiments according to the present invention will be described based on the drawings.
ブロワー（図示せず）等により約20mmH2Ｏと
いう比較的低い供給圧で燃焼用空気Ａを強制供給
される第１エアポート１を形成するケース２の上
部に、周方向に複数個穿設された風量均一化用の
孔３……を介して連通する第２エアポート４を形
成すべく、先端を若干絞つた外側筒体５を連設す
ると共に、前記ケース２の中心部を貫通する状態
で、約10mmH2Ｏの供給圧で燃焼用都市ガスＧが
送給される先端閉塞の燃料ガス供給管６を配設
し、その燃料ガス供給管６の先端部周囲に、複数
個のガス噴出孔７……を介して前記ガス供給管６
から燃料ガスが導入供給され、かつ、前記第２エ
アポート４から複数個の底部開孔８……を介して
燃焼用一次空気が導入供給される混合室９を形成
する筒状ケース１０を設け、この筒状ケース１０
の先端に上開き状の燃焼筒１１を一体的に連設し
てある。 A plurality of holes are bored in the circumferential direction in the upper part of the case 2 forming the first air port 1 to which combustion air A is forcibly supplied at a relatively low supply pressure of about 20 mmH 2 O by a blower (not shown) or the like. In order to form a second air port 4 that communicates through the holes 3 for equalizing air volume, an outer cylindrical body 5 with a slightly constricted tip is provided, and the outer cylindrical body 5 penetrates through the center of the case 2. A fuel gas supply pipe 6 with a closed end to which combustion city gas G is fed at a supply pressure of approximately 10 mmH 2 O is provided, and a plurality of gas injection holes 7 are provided around the tip of the fuel gas supply pipe 6. The gas supply pipe 6 via...
A cylindrical case 10 is provided which forms a mixing chamber 9 into which fuel gas is introduced and supplied from the second air port 4 and primary air for combustion is introduced and supplied from the second air port 4 through a plurality of bottom openings 8. This cylindrical case 10
A combustion cylinder 11 that opens upward is integrally connected to the tip of the cylinder.
前記混合室９と燃焼筒１１内部の燃焼部１３と
は、周方向に複数個の混合ガス噴出口１４……が
穿設された仕切板１５により区切つてあり、この
仕切板１５の前記混合室９側の面には、前記混合
ガス噴出口１４……を覆うように一枚の環状金網
から成る多孔部材１６を付設してある。 The mixing chamber 9 and the combustion section 13 inside the combustion tube 11 are separated by a partition plate 15 in which a plurality of mixed gas jet ports 14 are bored in the circumferential direction. A porous member 16 made of a piece of annular wire mesh is attached to the surface on the 9 side so as to cover the mixed gas outlet 14.
前記燃焼筒１１の壁面１１ａには、前記燃焼筒
１１の径方向の内側に向かつて、つまり、混合ガ
ス噴出方向に略直交する方向に二次空気を噴出す
る空気噴出開口１２……を、混合ガス噴出方向に
延びる一連のスリツト状に形成して、燃焼筒１１
の周方向に等間隔に並設してあり、且つ、各スリ
ツト状空気噴出開口１２……の長手方向中間部に
はスリツト状空気噴出開口１２の上端部及び下端
部夫々の開口巾よりも開口巾が広い巾広開口部１
２ａ……を形成してある。 The wall surface 11a of the combustion tube 11 is provided with an air ejection opening 12 for ejecting secondary air toward the inside of the combustion tube 11 in the radial direction, that is, in a direction substantially perpendicular to the mixed gas injection direction. The combustion tube 11 is formed into a series of slits extending in the gas ejection direction.
are arranged in parallel at equal intervals in the circumferential direction, and each slit-shaped air ejection opening 12 has an opening width wider than the upper and lower end portions of each slit-shaped air ejection opening 12 at the longitudinally intermediate portion thereof. Wide opening 1
2a... is formed.
前記仕切板１５は、その前記燃焼筒１１側の面
を傾斜面とするように、その中心部が前記燃焼筒
１１側に突出する略円錐形状のものに構成してあ
る。 The partition plate 15 has a substantially conical shape with its center protruding toward the combustion tube 11 so that its surface on the combustion tube 11 side is an inclined surface.
上記構成によれば、混合室９内に各別に導入供
給された燃料ガスと燃焼用一次空気とは、各混合
ガス噴出口１４……を覆う多孔部材１６としての
金網による噴出抑制作用ならびに噴出時における
乱流化促進作用によつて、極めて良好な混合状態
で而も勢いをある程度減殺された状態で、燃焼筒
１１内に噴出され、これによつて、燃焼が安定す
る。 According to the above configuration, the fuel gas and the primary air for combustion that are introduced and supplied separately into the mixing chamber 9 are suppressed by the ejection suppression effect by the wire mesh as the porous member 16 that covers each mixed gas ejection port 14, and when ejected. Due to the turbulence promotion effect, the fuel is ejected into the combustion tube 11 in an extremely good mixing state and with the momentum reduced to some extent, thereby stabilizing the combustion.
更に、燃焼筒１１の壁面１１ａに設けられた空
気噴出口１２からの二次空気供給については、空
気噴出開口１２を、混合ガス噴出方向に延びる一
連のスリツト状開口に形成することにより、二次
空気が噴出混合ガスの上流側から下流側にわたつ
て均一に供給されて火炎の形成が安定し、又、ス
リツト状開口１２の上流側端部及び下流側端部
夫々の開口巾を巾狭とすることにより、火炎の基
部に対する二次空気吹きつけの勢いを減殺して、
火炎が混合ガス噴出口からリフトオフしないよう
な状態で、且つ、火炎先端部に対する二次空気吹
きつけの勢いも減殺して、火炎の先端部がふらつ
かないような状態で二次空気が供給され、これに
よつて安定燃焼性が効果的に向上する。しかも、
スリツト状開口１２の長手方向中間部の巾広開口
部１２ａ……から、噴出混合ガスを完全燃焼させ
るに充分な量の二次空気が供給され、これによつ
て噴出混合ガスの全量を燃焼させることができる
位置を、可及的に混合ガス噴出口１４方向に近づ
けることができることとなり、短火炎燃焼を効果
的に行わせることができる。 Furthermore, regarding the secondary air supply from the air jet opening 12 provided on the wall surface 11a of the combustion tube 11, the air jet opening 12 is formed into a series of slit-like openings extending in the mixed gas jetting direction. Air is uniformly supplied from the upstream side to the downstream side of the ejected mixed gas to stabilize flame formation, and the opening widths of the upstream and downstream ends of the slit opening 12 are narrowed. By doing so, the force of secondary air blowing against the base of the flame is reduced,
Secondary air is supplied in a state in which the flame does not lift off from the mixed gas outlet, and in a state in which the force of blowing the secondary air against the flame tip is also reduced so that the flame tip does not wobble; This effectively improves stable combustibility. Moreover,
A sufficient amount of secondary air is supplied from the wide opening 12a in the longitudinally intermediate portion of the slit opening 12 to completely burn the blown mixed gas, thereby burning the entire amount of the blown mixed gas. This means that the position where the combustion can occur can be brought as close as possible to the direction of the mixed gas jet port 14, and short flame combustion can be effectively performed.
また、上記実施例においては、仕切板１５の燃
焼筒１１の側の面を傾斜させてあることから、各
混合ガス噴出口１４の周囲が非対称形となつて渦
が発生し易いために、二次空気との混合が更に良
好に行われる。更にまた、前記燃焼筒１１先端と
外側筒体５先端との間を通過する空気は、外側筒
体５に対する冷却作用と燃焼用三次空気としての
作用を発揮する。 In addition, in the above embodiment, since the surface of the partition plate 15 on the side of the combustion tube 11 is inclined, the surroundings of each mixed gas outlet 14 are asymmetrical, and vortices are likely to occur. Mixing with secondary air takes place even better. Furthermore, the air passing between the tip of the combustion tube 11 and the tip of the outer tube 5 exhibits a cooling effect on the outer tube 5 and an effect as tertiary air for combustion.
なお、上記実施例においては、多孔部材１６を
一枚の環状金網で構成したものを示したが、金網
に限らずセラミツクフオーム等の他の多孔質もの
を用いてもよいし、一枚ものに限らず、夫々の混
合ガス噴出口１４を各別に覆うように複数個の多
孔部材１６……を用いてもよい。また、この多孔
部材１６は、上記実施例のように混合ガス噴出口
１４の上流側に設けるのでは無く、混合ガス噴出
口１４の内部、あるいは、この下流側に設けても
よい。 In the above embodiment, the porous member 16 is made of a single piece of annular wire mesh, but other porous materials such as ceramic foam may be used instead of wire mesh, However, a plurality of porous members 16 may be used so as to cover each mixed gas outlet 14 separately. Further, the porous member 16 may be provided inside the mixed gas outlet 14 or on the downstream side thereof, instead of being provided upstream of the mixed gas outlet 14 as in the above embodiment.
また、前記第１エアポート１内に圧送供給する
燃焼用空気Ａを燃焼排ガスで余熱したり、あるい
は、その燃焼用空気Ａに燃焼排ガスを混入させる
ように構成すれば、燃焼効率およびNOx低減の
面でより一層好ましい。 Furthermore, if the combustion air A that is pressure-fed and supplied into the first air port 1 is preheated with combustion exhaust gas, or if the combustion air A is mixed with combustion exhaust gas, combustion efficiency and NOx reduction can be improved. is even more preferable.
図面は、本発明に係るバーナの一実施例を示す
全体概略縦断面図である。
１１ａ……壁面、１２……空気噴出開口、１２
ａ……巾広開口部、１４……混合ガス噴出口。
The drawing is an overall schematic longitudinal sectional view showing an embodiment of a burner according to the present invention. 11a...Wall surface, 12...Air jet opening, 12
a...Wide opening, 14...Mixed gas outlet.
Claims (1)
て噴出混合ガスを燃焼させる混合ガス噴出口１４
を設け、この混合ガス噴出口１４の近傍から混合
ガス噴出方向にほぼ沿う方向に延びる壁面１１ａ
を設け、前記混合ガス噴出口１４からの噴出混合
ガス経路に向けて燃焼用二次空気を噴出する空気
噴出開口１２を、混合ガス噴出方向に延びる列状
に配置して前記壁面１１ａに形成したバーナであ
つて、 前記空気噴出開口１２の列状配置形態として、
前記空気噴出開口１２を混合ガス噴出方向に延び
る一連のスリツト状開口に形成し、このスリツト
状開口１２の長手方向中間部に、混合ガス噴出方
向の上流側端部及び下流側端部夫々の開口巾より
も巾広の巾広開口部１２ａを形成してあるバー
ナ。[Claims] 1. A mixed gas jetting port 14 that jets out a mixed gas of fuel gas and combustion air and burns the spouted mixed gas.
and a wall surface 11a extending from the vicinity of the mixed gas jetting port 14 in a direction substantially along the mixed gas jetting direction.
Air ejection openings 12 for ejecting secondary air for combustion toward the mixed gas path ejected from the mixed gas ejection port 14 are arranged in a row extending in the mixed gas ejection direction and formed on the wall surface 11a. In the burner, the air jet openings 12 are arranged in a row,
The air ejection opening 12 is formed into a series of slit-like openings extending in the mixed gas ejection direction, and an opening is provided at an upstream end and a downstream end in the longitudinal direction of the slit-like opening 12, respectively. The burner is formed with a wide opening 12a that is wider than the width of the burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15526483A JPS6048417A (en) | 1983-08-24 | 1983-08-24 | High load burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15526483A JPS6048417A (en) | 1983-08-24 | 1983-08-24 | High load burner |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP193591A Division JPH03247909A (en) | 1991-01-11 | 1991-01-11 | Burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6048417A JPS6048417A (en) | 1985-03-16 |
| JPH0434044B2 true JPH0434044B2 (en) | 1992-06-04 |
Family
ID=15602107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15526483A Granted JPS6048417A (en) | 1983-08-24 | 1983-08-24 | High load burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6048417A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100388300B1 (en) * | 2001-04-27 | 2003-06-25 | 세일기건 주식회사 | Heating power increment device of gas burner |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5298240U (en) * | 1976-01-20 | 1977-07-23 | ||
| JPS5296425A (en) * | 1976-02-10 | 1977-08-13 | Matsushita Electric Ind Co Ltd | Gas combustion apparatus |
| JPS607204Y2 (en) * | 1979-08-10 | 1985-03-11 | 三菱自動車工業株式会社 | Automotive wheel mounting device |
| JPS5514897U (en) * | 1979-08-16 | 1980-01-30 | ||
| JPS5888521U (en) * | 1981-12-12 | 1983-06-15 | 大阪瓦斯株式会社 | gas burner |
-
1983
- 1983-08-24 JP JP15526483A patent/JPS6048417A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6048417A (en) | 1985-03-16 |
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