JP3035717B2 - Distributed flame type low NOx gas burner - Google Patents
Distributed flame type low NOx gas burnerInfo
- Publication number
- JP3035717B2 JP3035717B2 JP3109698A JP10969891A JP3035717B2 JP 3035717 B2 JP3035717 B2 JP 3035717B2 JP 3109698 A JP3109698 A JP 3109698A JP 10969891 A JP10969891 A JP 10969891A JP 3035717 B2 JP3035717 B2 JP 3035717B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- flame
- burner
- low nox
- type low
- 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
Links
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- Gas Burners (AREA)
Description
【0001】[0001]
【産業上の利用分野】この発明はバーナ装置それ自身で
低NOx燃焼を図る低NOxバーナの構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a low NOx burner for achieving low NOx combustion by a burner device itself.
【0002】[0002]
【従来の技術】従来の低NOxガスバーナは、例えば実
公昭60ー30568号公報では、バーナ正面図で一の
燃料噴出口を囲み片仮名ロの字状の空気噴出口を設けて
過濃度拡散火炎ノズルとし、その下方に正面図で格子状
整流板を設けその背後に希薄混合室と2本の燃料噴出ノ
ズルを設け一の組のバーナとし、この組の下方に順次複
数の同様なバーナ組を配置し一の低NOxバーナ装置と
している。この一の組では合計3本の燃料噴出ノズルに
ついて夫々燃料供給量の制御をする必要がある。従って
低負荷、高負荷への変化についてはその都度各燃料噴出
ノズルへの燃料供給の変更制御をせねばならぬという問
題がある。また一の組のバーナは濃淡燃料噴出なので、
濃淡濃の火炎形成には複数の組を順次接続せねば低NO
x燃焼装置にならぬという問題もある。2. Description of the Related Art A conventional low NOx gas burner is disclosed in Japanese Utility Model Publication No. Sho 60-30568, for example, in which a fuel injection port is surrounded by a burner front view, and a katakana-shaped air injection port is provided to form an over-concentration diffusion flame nozzle. Below, a grid-like straightening plate is provided in a front view, a lean mixing chamber and two fuel ejection nozzles are provided behind it, and one set of burners is provided. A plurality of similar burner sets are sequentially arranged below this set. This is the only low NOx burner device. In this set, it is necessary to control the fuel supply amount for each of the three fuel ejection nozzles. Therefore, there is a problem in that a change in the fuel supply to each fuel ejection nozzle must be controlled each time the load changes to a low load or a high load. Also, one set of burners is a fuel fuel jet,
Low NO can be achieved by connecting several sets in order to form a light and dark flame
There is also a problem that it cannot be an x-burning device.
【0003】[0003]
【発明が解決しようとする課題】バーナの負荷変更の都
度複数の弁を操作することなく、ガス燃料供給管路の一
の弁を操作すれば、一本のガス供給管自身で複数の空気
と燃焼ガスと混合した濃淡の燃焼ガスの流れ(以下単に
濃ガス流、淡ガス流と称す。)が得られ低NOx用の分
散火炎が形成されるバーナ装置の構造を提案しようとい
うものである。By operating one valve of the gas fuel supply line without operating a plurality of valves each time the load of the burner is changed, a single gas supply pipe itself can be connected to a plurality of air. It is an object of the present invention to propose a structure of a burner device which can obtain a flow of a rich and lean combustion gas mixed with a combustion gas (hereinafter, simply referred to as a rich gas flow and a light gas flow) to form a dispersed flame for low NOx.
【0004】[0004]
【課題を解決するための手段】本願発明では、一の燃料
ガス供給部の仕切部材により形成される複数の流路に対
応して複数の区画された燃料ガス供給部を形成し、その
燃料ガス流のガス濃度に対応してガスノズルとしての複
数の穴をその径と数を調整し交互に位置する濃 整理番号 P203Gー5
5/9 淡のガス流を形成させ、さらにバーナ装置の火炉側端部
に保炎用の保炎部材を設けるものである。According to the present invention, a plurality of partitioned fuel gas supply sections are formed corresponding to a plurality of flow paths formed by a partition member of one fuel gas supply section, and the fuel gas supply section is provided. The number and diameter of a plurality of holes as gas nozzles are adjusted according to the gas concentration of the stream, and the holes are alternately located.
5/9 A light gas flow is formed, and a flame holding member for flame holding is provided at the furnace side end of the burner device.
【0005】[0005]
【実施例1】図1(a)、(b)、部分斜視図の(c)
によりこの第1実施例を説明する。ガスバーナ装置1に
は、ガス供給管2とガス噴出穴の複数個よりなるガスバ
ーナノズル部3a,3b,3cを有するガスヘツダ4が
その軸心を直交して接続し設けられている。このガスヘ
ツダ4には図示例では2枚の仕切板5がその板面をガス
供給管の軸心に平行にかつ垂直分離版8に板面を直交
し、またこの垂直分離板8は図1(b)では流れを左右
に分離している。図1(a)では2枚の仕切板5が上下
に3つの通路を形成して接続して設けられているので図
示例では合計6つのガスと空気の混合気体の流路が形成
されることとなる。(仕切板、垂直分離板を仕切部材と
称す。)なおこの垂直分離板の火炉側端部には保炎板6
が接続して設けられ、この保炎板の周縁には複数の切り
込み溝が設けられており、保炎板の火炉側に多数の小渦
流が形成され保炎効果を有効にしている。なおガスヘツ
ダ4には仕切板5と垂直分離板8で形成される流路に対
応し穴数と穴径を異にするガスノズル穴が複数それぞれ
設けられ、夫々の合計穴面積を計算しておくことにより
濃淡のガス流路が形成できる。これにより濃と淡を交互
にする燃料ガスと空気の混合ガスの流れが得られ、低N
Ox燃焼を一のバーナ装置ですることを可能にしてい
る。またこのような構成なので燃焼時すべての負荷範囲
で常に一定の混合比の濃淡の分散火炎が交互配置となり
分散火炎とすることにより低NOx燃焼を得ることにな
る。Embodiment 1 FIGS. 1 (a) and 1 (b), a partial perspective view (c)
The first embodiment will be described with reference to FIG. The gas burner device 1 is provided with a gas supply pipe 2 and a gas header 4 having gas burner nozzles 3a, 3b, 3c each having a plurality of gas ejection holes, the axes of which are orthogonally connected. In the illustrated example, the gas header 4 has two partition plates 5 whose plate surfaces are parallel to the axis of the gas supply pipe and whose plate surfaces are orthogonal to the vertical separation plate 8, and the vertical separation plate 8 is shown in FIG. In b), the flow is separated into right and left. In FIG. 1A, two partition plates 5 are provided so as to be connected to each other by forming three upper and lower passages. In the illustrated example, a total of six gas and air mixed gas flow paths are formed. Becomes (The partition plate and the vertical separation plate are referred to as partition members.) A flame holding plate 6 is provided at the furnace side end of the vertical separation plate.
Are connected to each other, and a plurality of cut grooves are provided on the peripheral edge of the flame holding plate, and a large number of small eddies are formed on the furnace side of the flame holding plate to make the flame holding effect effective. In addition, the gas header 4 is provided with a plurality of gas nozzle holes having different numbers of holes and different hole diameters corresponding to the flow paths formed by the partition plate 5 and the vertical separation plate 8, and the total hole area of each of them is calculated. Thus, a dense gas flow path can be formed. As a result, a flow of a mixed gas of fuel gas and air that alternates between rich and light is obtained,
This makes it possible to burn Ox in one burner device. Further, with such a configuration, low-NOx combustion can be obtained by dispersing the dispersed flames having a constant mixture ratio at all times in the load range during combustion in a distributed flame.
【実施例2】図2(a)と、そのIーI断面斜視図たる
図2(b)を使用し第2実施例を説明する。この実施例
はバーナ開口が円形の場合である。このため本願発明に
おける燃料ガスと空気のガスの濃淡ガス流を形成すべ
く、図示のように複数の仕切板10はその円形断面の中
心から放射状にリング状ガスヘツダ内側に向け伸びてこ
れに接続している。この仕切板により流路にはほぼ断面
三角形の複数の流路空間 整理番号 P203Gー6
6/9 が形成される。この各流路空間に対向してガスノズル穴
の複数個をその穴径と数を前記各流路空間に対応して濃
淡ガス流が形成されるよう穴面積の合計面積を定め形成
しておく。またバーナ装置の火炉側開口近傍には保炎板
移動用シャフト13で支持される円形の保炎板12が位
置する。この保炎板の外周縁には実施例1と同様にして
複数の切り込み溝を形成し保炎効果をあげている。なお
燃料としてガスを使用するのでバーナの仕切板の空気流
れにつき上流側にフレームアレスター用金網14、火炉
側に燃料ガス混合用の金網15を設けておく。なお負荷
増減時の燃料の混合ガスの流量制御に際しての流速保持
と長炎と短炎形成を好適にするためバーナ開口周縁に調
整ブロツク16と、保炎板12と保炎板移動用シャフト
13の接続部に調整ブロツク17を設ける。Embodiment 2 A second embodiment will be described with reference to FIG. 2 (a) and FIG. 2 (b) which is a sectional view taken along line II of FIG. In this embodiment, the burner opening is circular. Therefore, in order to form a concentrated gas flow of the fuel gas and the air gas in the present invention, as shown in the figure, a plurality of partition plates 10 extend radially inward from the center of the circular cross section toward the inside of the ring-shaped gas header and are connected thereto. ing. A plurality of flow passage spaces having a substantially triangular cross section are provided in the flow passage by this partition plate.
6/9 is formed. A plurality of gas nozzle holes are formed so as to face the respective flow path spaces, and the total diameter of the plurality of gas nozzle holes is determined so as to form a concentrated gas flow corresponding to the respective flow path spaces. Also, a circular flame holding plate 12 supported by a flame holding plate moving shaft 13 is located near the furnace side opening of the burner device. A plurality of cut grooves are formed on the outer peripheral edge of the flame holding plate in the same manner as in the first embodiment to enhance the flame holding effect. Since gas is used as the fuel, a wire net 14 for the flame arrestor is provided on the upstream side for the air flow of the partition plate of the burner, and a wire mesh 15 for mixing the fuel gas is provided on the furnace side. In order to maintain the flow rate and to form the long and short flames when controlling the flow rate of the mixed gas of the fuel when the load is increased or decreased, the adjustment block 16 on the periphery of the burner opening, the flame holding plate 12 and the shaft 13 for moving the flame holding plate are provided. An adjustment block 17 is provided at the connection.
【実施例3】図3(a)に実施例2の場合における低負
荷運転を可能とする装置の一例を示す。火炉側端部近傍
に図示のように複数の調節プレート18を設け、支点1
8aより通路壁よりさらに通路外側に伸びるプレート部
を持ち、環状の移動ブロック19とこれを駆動するモー
タ20とネジ軸21との組み合わせで保炎板の外周縁と
の隙間22を調整できるようにし、負荷の増減に対応し
て長炎、短炎とフレームパターンを変えることができ
る。なお類似の機構により長方形断面の通路についても
フレームパターン変更をすることができる。Third Embodiment FIG. 3 (a) shows an example of an apparatus which enables low-load operation in the second embodiment. A plurality of adjusting plates 18 are provided near the furnace side end as shown in FIG.
8a has a plate portion extending further outward from the passage wall than the passage wall, and a gap 22 between the outer peripheral edge of the flame holding plate can be adjusted by a combination of an annular moving block 19, a motor 20 driving the same, and a screw shaft 21. The flame pattern can be changed between a long flame and a short flame according to the increase and decrease of the load. It should be noted that the frame pattern can be changed for a passage having a rectangular cross section by a similar mechanism.
【実施例4】実施例3(a)の調節プレートに代え、図
2(a)に示す固定型の調節ブロツク16、17を設け
てフレームパターンを保炎板移動用シャフト13の操作
によりフレームパターンん変更を行なうことができる。Embodiment 4 In place of the adjustment plate of Embodiment 3 (a), fixed adjustment blocks 16 and 17 shown in FIG. 2 (a) are provided, and the frame pattern is changed by operating the shaft 13 for moving the flame holding plate. Changes can be made.
【実施例5】図4(a)は大容量のガスヘツダ27を使
用するときで、該ガスヘツダの上下端部に夫々燃料ガス
供給管28が接続されている場合である。Fifth Embodiment FIG. 4A shows a case in which a large-capacity gas header 27 is used, and fuel gas supply pipes 28 are respectively connected to upper and lower ends of the gas header.
【実施例6】図4(b)は更に大容量とする場合で、複
数(図示例では3本)のガスヘッダ30を使用するもの
で、上端部は上ヘツダ29uと,下端部は下ヘツダ29
dと 整理番号 P203Gー7
7/9 夫々接続されている場合である。この上ヘツダ、下ヘツ
ダの左右端には燃料ガス供給管32が夫々接続されてい
る。[Embodiment 6] FIG. 4 (b) shows a case in which a larger capacity is used, in which a plurality of (three in the illustrated example) gas headers 30 are used. The upper end is an upper header 29u and the lower end is a lower header 29u.
d and reference number P203G-7
7/9 This is the case where each is connected. Fuel gas supply pipes 32 are connected to left and right ends of the upper and lower headers, respectively.
【実施例7】前記図4(b)においては各ヘツダのノズ
ル穴はヘツダ軸心方向に穴径とその数を変え仕切板によ
り濃淡燃料ガス流れを形成しているが、図4(c)では
は実施例6におけるガスヘツダを濃ガスヘツダ31、淡
ガスヘツダ32、濃ガスヘツダ33を並列に設けた場合
で、同様にして低NOx燃焼、大容量を可能とした場合
ものである。[Embodiment 7] In FIG. 4B, the nozzle hole of each header is formed by changing the hole diameter and the number thereof in the direction of the axis of the header to form a rich fuel gas flow by a partition plate. In the sixth embodiment, the gas header according to the sixth embodiment is such that a concentrated gas header 31, a light gas header 32, and a concentrated gas header 33 are provided in parallel, and a low NOx combustion and a large capacity are similarly enabled.
【0006】[0006]
【発明の効果】この発明を実施することにより、一本の
燃料供給管に設けた調整弁によりガス燃料供給量を制御
するだけで一定の濃淡の混合比の分散火炎が交互に生
じ、かつ負荷の増減に際し好ましい長短の火炎が得ら
れ、好適な低NOxガス燃焼がされるという効果を奏す
るものである。According to the present invention, a distributed flame having a constant mixture ratio of light and shade is generated alternately by merely controlling the gas fuel supply amount by an adjusting valve provided in one fuel supply pipe, and In this case, it is possible to obtain a preferable long and short flame when increasing / decreasing the temperature and to effect a suitable low NOx gas combustion.
【図1(a)】本願発明の第1実施例にかかる装置の側
断面図である。FIG. 1 (a) is a side sectional view of an apparatus according to a first embodiment of the present invention.
【図1(b)】第1実施例にかかる装置の断面平面図で
ある。FIG. 1 (b) is a cross-sectional plan view of the device according to the first embodiment.
【図1(c)】図1のガスヘツダ4を含む部分斜視図で
ある。FIG. 1C is a partial perspective view including the gas header 4 of FIG.
【図2(a)】第2実施例の装置の縦断面図である。FIG. 2 (a) is a longitudinal sectional view of the device of the second embodiment.
【図2(b)】図2(a)のIーI断面視の斜視図であ
る・FIG. 2 (b) is a perspective view taken along a line II in FIG. 2 (a).
【図3】低負荷運転を可能とする調節プレートを含む装
置の部分断面図である。る。 整理番号 P203Gー8
8/9FIG. 3 is a partial cross-sectional view of an apparatus including an adjustment plate that enables low-load operation. You. Reference number P203G-8
8/9
【図4(a)】大容量ガスヘッダの部分図である。FIG. 4 (a) is a partial view of a large-capacity gas header.
【図4(b)】ガスヘツダ30の複数本をその上下端部
を夫々ヘツダで接続しさらに大容量化を図った装置の部
分斜視図である。FIG. 4 (b) is a partial perspective view of an apparatus in which a plurality of gas headers 30 are connected at their upper and lower ends by respective headers to further increase the capacity.
【図4(c)】濃ガスヘツダ、淡ガスヘツダ、濃ガスヘ
ツダとガスヘツダを並列にした大容量低NOx燃焼の装
置の斜視図である。FIG. 4 (c) is a perspective view of a large-capacity low-NOx combustion apparatus in which a concentrated gas header, a light gas header, and a concentrated gas header and a gas header are arranged in parallel.
1 ガスバーナ装置 2 ガス供給管 4 ガスヘツダ 4a ガスノズル穴 5 仕切板 6 保炎板 6a 安定板 7a 流路 7b 流路 8 垂直分離板 11 ガスヘツダ 12 保炎板 13 保炎板移動用シャフト 18 調整プレート 25 ダンパ 26 弁 27 ガスヘツダ 30 ガスヘツダ DESCRIPTION OF SYMBOLS 1 Gas burner apparatus 2 Gas supply pipe 4 Gas header 4a Gas nozzle hole 5 Partition plate 6 Flame holding plate 6a Stabilizing plate 7a Flow path 7b Flow path 8 Vertical separation plate 11 Gas header 12 Flame holding plate 13 Flame holding plate moving shaft 18 Adjustment plate 25 Damper 26 Valve 27 Gas header 30 Gas header
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松本 欣二 神奈川県横浜市磯子区磯子1丁目2番10 号 バブ日立エンジニアリングサービス 株式会社内 (72)発明者 清信 克巳 神奈川県横浜市磯子区磯子1丁目2番10 号 バブ日立エンジニアリングサービス 株式会社内 (72)発明者 幸田 文夫 広島県呉市宝町6番9号 バブコツク日 立株式会社 呉工場内 (56)参考文献 特開 平4−126906(JP,A) 実開 昭52−167633(JP,U) 実開 昭59−29506(JP,U) 実開 平4−73713(JP,U) (58)調査した分野(Int.Cl.7,DB名) F23C 11/00 329 F23D 14/02 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kinji Matsumoto 1-2-10 Isogo, Isogo-ku, Yokohama, Kanagawa Prefecture Inside Bab Hitachi Engineering Services Co., Ltd. No. 2 Bab Hitachi Engineering Services Co., Ltd. (72) Inventor Fumio Koda 6-9 Takaracho, Kure City, Hiroshima Prefecture Bab Kotsuk Hitachi Ltd. Kure Factory (56) References JP-A-4-126906 (JP, A ) Japanese Utility Model 52-167633 (JP, U) Japanese Utility Model 59-29506 (JP, U) Japanese Utility Model Application Hei 4-73713 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) F23C 11/00 329 F23D 14/02
Claims (5)
供給量を異にする複数のガスバーナノズル部を設け、該
ガスバーナノズル部に対応して濃ガス流路と淡ガス流路
を交互に位置させ分散火炎を形成する仕切部材を設け、
かつ該バーナ装置の火炉側端部に保炎板を設けたことを
特徴とする分散火炎型低NOxガスバーナ。1. A gas header of one burner device is provided with a plurality of gas burner nozzles having different fuel gas supply amounts, and a rich gas flow path and a light gas flow path are alternately positioned corresponding to the gas burner nozzles. Providing a partition member that forms a dispersed flame,
A distributed flame type low NOx gas burner characterized in that a flame holding plate is provided at the furnace side end of the burner device.
ガスノズル穴の数と径を変えた複数のガスバーナノズル
部を持つ一のガスヘツダを該長方形断面長軸に平行して
位置させ、各ガスバーナノズル部間を仕切る複数の仕切
部材を設けて複数の空気と燃焼ガスとの混合ガス流路を
形成し、前記ガス流路に濃ガス流路と淡ガス流路を交互
に位置し分散火炎を形成するように構成したことを特徴
とする請求項1の分散火炎型低NOxガスバーナ。2. A combustion air passage having a rectangular cross section,
A gas header having a plurality of gas burner nozzles with different numbers and diameters of gas nozzle holes is positioned in parallel with the long axis of the rectangular cross section, and a plurality of partition members for partitioning between the gas burner nozzles are provided to provide a plurality of air. 2. The dispersion according to claim 1, wherein a mixed gas flow path with the combustion gas is formed, and a concentrated gas flow path and a light gas flow path are alternately positioned in the gas flow path to form a dispersed flame. Flame type low NOx gas burner.
のリング中心より放射状に該ガスリング壁に展出する複
数の仕切板を設けて複数の流路空間を形成し、夫々の流
路空間に対向し該ガスヘツダに複数のガスノズル穴をそ
の径と数を変えて設け空気と混合させ濃ガス流路と淡ガ
ス流路が交互に位置した分散火炎を形成するように構成
したことを特徴とする請求項1の分散火炎型低NOxガ
スバーナ。3. A plurality of partition plates extending radially from a ring center of a ring-shaped gas header for supplying a fuel gas to a wall of the gas ring are provided to form a plurality of flow passage spaces, and each of the flow passage spaces faces the respective flow passage space. A plurality of gas nozzle holes having different diameters and numbers are provided in the gas header and mixed with air to form a dispersed flame in which rich gas flow passages and light gas flow passages are alternately located. Item 4. The dispersed flame type low NOx gas burner according to Item 1.
部との距離を調整する駆動部付きの長炎と短炎とのフレ
ームパターン変更手段を設けたことを特徴とする請求項
1ないし3のいずれかに記載の分散火炎型低NOxバー
ナ装置。4. A flame pattern changing means for driving a long flame and a short flame provided with a drive unit for adjusting a distance between a peripheral edge of the flame holding plate and a furnace side end of the plurality of movable pieces. Item 4. The distributed flame type low NOx burner device according to any one of Items 1 to 3.
置の火炉側端部に設ける調整ブロツクと、保炎板と保炎
板移動用シャフトとの接続部に設ける調整ブロツクとよ
りなる固定調整ブロツクにすることを特徴とする請求項
1ないし3のいずれかに記載の分散火炎型低NOxガス
バーナ。 整理番号 P203Gー4
4/95. A fixed adjustment block comprising an adjustment block provided at a furnace side end of a burner device and an adjustment block provided at a connection between a flame holding plate and a shaft for moving the flame holding plate. The distributed flame type low NOx gas burner according to any one of claims 1 to 3, characterized in that: Reference number P203G-4
4/9
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3109698A JP3035717B2 (en) | 1991-04-16 | 1991-04-16 | Distributed flame type low NOx gas burner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3109698A JP3035717B2 (en) | 1991-04-16 | 1991-04-16 | Distributed flame type low NOx gas burner |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05215306A JPH05215306A (en) | 1993-08-24 |
JP3035717B2 true JP3035717B2 (en) | 2000-04-24 |
Family
ID=14516941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3109698A Expired - Lifetime JP3035717B2 (en) | 1991-04-16 | 1991-04-16 | Distributed flame type low NOx gas burner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3035717B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10683572B2 (en) | 2018-10-15 | 2020-06-16 | Goodrich Corporation | Silane recirculation for rapid carbon/silicon carbide or silicon carbide/silicon carbide ceramic matrix composites |
CN111550778A (en) * | 2019-02-11 | 2020-08-18 | 美一蓝技术公司 | Horizontal roasting burner |
WO2020226206A1 (en) * | 2019-05-08 | 2020-11-12 | 주식회사 수국 | Low-nox burner having perforated plate-type combustion head |
-
1991
- 1991-04-16 JP JP3109698A patent/JP3035717B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH05215306A (en) | 1993-08-24 |
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