JPH05118512A - Low nitrogen oxide generation burner - Google Patents
Low nitrogen oxide generation burnerInfo
- Publication number
- JPH05118512A JPH05118512A JP30837891A JP30837891A JPH05118512A JP H05118512 A JPH05118512 A JP H05118512A JP 30837891 A JP30837891 A JP 30837891A JP 30837891 A JP30837891 A JP 30837891A JP H05118512 A JPH05118512 A JP H05118512A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- combustion
- chamber
- combustion chamber
- gas outflow
- 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.)
- Granted
Links
Landscapes
- Gas Burners (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、例えばボイラ用等に使
用する窒素酸化物低発生バーナに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nitrogen oxide low generation burner used for, for example, a boiler.
【0002】[0002]
【従来の技術】この種バーナとしては、図1に示すバー
ナがある。これは保炎板aにスリット孔bを形成し、該
スリット孔bから空気を噴出させる一方、混合気をスリ
ット孔b間に噴出させ、保炎板aにそって混合燃焼させ
て、保炎板aに附着した火炎cを形成するものである。2. Description of the Related Art As this type of burner, there is a burner shown in FIG. This is because a slit hole b is formed in the flame holding plate a, and air is jetted from the slit hole b, while the air-fuel mixture is jetted between the slit holes b and mixed and burned along the flame holding plate a to hold the flame. The flame c attached to the plate a is formed.
【0003】[0003]
【発明が解決しようとする課題】前記従来バーナは、空
気と混合気が混合して燃焼する際、一様とならず、部分
的に高温部が随所に形成されてしまい、窒素酸化物の発
生を抑制することはできない。本発明は、かかる点を解
決することを課題とするものである。The conventional burner described above is not uniform when the air and the air-fuel mixture are mixed and burned, and a high temperature portion is partially formed everywhere, and nitrogen oxides are generated. Can not be suppressed. An object of the present invention is to solve such a point.
【0004】[0004]
【課題を解決するための手段】前記した課題を解決する
ために、本発明は、燃焼室を先広がり状の傾斜保炎板で
構成し、該傾斜保炎板には盲部及びガス室に連通するス
リット状開口部とを交互に構成し、前記盲部の空気室側
にはガス案内板を設置し、該ガス案内板の下端部には、
ガス室を連通する横方向ガス流出孔を形成し、前記盲部
の燃焼室側の下端部には、ガス室と連通する縦方向ガス
流出孔を形成した構成のものであり、また、本発明は、
前記した構成に於いて、横方向ガス流出孔及び縦方向ガ
ス流出孔を、空気室側と燃焼室側とに於いて交互に構成
したものであり、また、本発明は、燃焼室形状を傾斜保
炎板を対向させて箱型状に構成したものであり、また、
本発明は、燃焼室形状を傾斜保炎板で円筒状に構成した
ものである。また、本発明は、縦方向ガス流出孔を傾斜
保炎板に向けて傾斜させて構成したものであり、また、
本発明は、燃焼室内に、縦方向ガス流出孔から流出する
ガスを傾斜保炎板にそって案内する案内部材を設けたも
のである。なお、本発明に於いて、ガス室には、便宜上
混合気室の概念も含むものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises a combustion chamber composed of a diverging inclined flame holding plate, and the inclined flame holding plate has a blind portion and a gas chamber. Slit-like openings that communicate with each other are alternately configured, a gas guide plate is installed on the air chamber side of the blind portion, and a lower end portion of the gas guide plate is
A horizontal gas outflow hole communicating with the gas chamber is formed, and a vertical gas outflow hole communicating with the gas chamber is formed at a lower end portion of the blind portion on the combustion chamber side. Is
In the above-mentioned configuration, the lateral gas outflow holes and the vertical gas outflow holes are alternately formed on the air chamber side and the combustion chamber side, and in the present invention, the combustion chamber shape is inclined. It is a box-shaped structure with flame holding plates facing each other.
According to the present invention, the combustion chamber is formed into a cylindrical shape with an inclined flame holding plate. Further, the present invention is configured such that the longitudinal gas outflow holes are inclined toward the inclined flame stabilizing plate, and
According to the present invention, a guide member for guiding the gas flowing out from the vertical gas outflow hole along the inclined flame stabilizing plate is provided in the combustion chamber. In the present invention, the gas chamber also includes the concept of the air-fuel mixture chamber for convenience.
【0005】[0005]
【作用】横方向ガス流出孔からガスが流出すると、この
ガスは上昇しならが周囲空気と混合しつつ、スリット状
開口部から燃焼室へと流出する。この時、同時に、縦方
向ガス流出孔からガスが流出して盲部にそって上昇して
おり、このガスは前記スリット状開口部から流出する混
合気と良好に混合する。かかる状態に於いて燃焼が実行
されるため、傾斜保炎部に附着した良好な火炎が形成さ
れる。燃焼は、このように細分割されながら燃焼するの
で、特別の高温部が形成されないことと相俟って、前記
スリット状開口部の近傍では稀薄燃焼が進行し、盲部上
に於いては、ガスリッチ燃焼が進行する。かかる濃淡燃
焼と前記細分割燃焼の同時進行により、NOx発生を効
果的に抑制することができる。When the gas flows out from the lateral gas outflow hole, the gas rises and mixes with the ambient air, but flows out from the slit-shaped opening into the combustion chamber. At this time, at the same time, the gas flows out from the vertical gas outflow hole and rises along the blind portion, and this gas mixes well with the air-fuel mixture flowing out from the slit-shaped opening. Since the combustion is executed in such a state, a good flame attached to the inclined flame holding portion is formed. Combustion burns while being subdivided in this way, and in combination with the fact that no special high temperature portion is formed, lean combustion progresses in the vicinity of the slit-shaped opening, and on the blind portion, Gas rich combustion proceeds. NOx generation can be effectively suppressed by the simultaneous progress of the rich-lean combustion and the subdivided combustion.
【0006】[0006]
【実施例】符号1は燃焼室であって、この燃焼室を傾斜
保炎板2で構成し、該傾斜保炎板2には盲部3及びガス
室4に連通するスリット状開口部5とを交互に構成し、
前記盲部3の空気室6側にはガス案内板7を設置し、該
ガス案内板の下端部には、ガス室1と連通する横方向ガ
ス流出孔8を形成し前記ガス案内板7の燃焼室1側の下
端部には縦方向ガス流出孔9を形成する。燃焼室1の形
状は、各図に示す通り、箱型状でも円筒状でもよいし、
また横方向ガス流出孔8と縦方向ガス流出孔9は交互に
構成してもよい。縦方向ガス流出孔9は傾斜保炎板にそ
って流れるように構成するとよい。符号9aは、傾斜保
炎板2の傾斜角度に対応して傾斜構成させた縦方向ガス
流出孔であり、これは、前記した混合燃焼と火炎の付着
燃焼を一層効果的にするものである。また、符号9bは
縦方向ガス流出孔9から流出するガスを傾斜保炎板2に
そって流れるように構成した案内部材である。この案内
部材9bも、前記したと同様に混合燃焼と付着燃焼を効
果的にするものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 denotes a combustion chamber, which is composed of an inclined flame holding plate 2, and the inclined flame holding plate 2 has a slit-shaped opening 5 communicating with a blind portion 3 and a gas chamber 4. Alternately,
A gas guide plate 7 is installed on the air chamber 6 side of the blind portion 3, and a lateral gas outflow hole 8 communicating with the gas chamber 1 is formed at a lower end portion of the gas guide plate 7 to form the gas guide plate 7. A vertical gas outflow hole 9 is formed at the lower end portion on the combustion chamber 1 side. The shape of the combustion chamber 1 may be a box shape or a cylindrical shape, as shown in each drawing,
The lateral gas outflow holes 8 and the vertical gas outflow holes 9 may be alternately arranged. The longitudinal gas outflow holes 9 may be configured to flow along the inclined flame stabilizing plate. Reference numeral 9a is a vertical gas outflow hole which is inclined in correspondence with the inclination angle of the inclined flame stabilizing plate 2, which makes the mixed combustion and the flame adhering combustion more effective. Reference numeral 9b is a guide member configured so that the gas flowing out from the vertical gas outflow hole 9 flows along the inclined flame stabilizing plate 2. This guide member 9b also makes the mixed combustion and the adhering combustion effective, as described above.
【0007】かかる構成に於いて、横方向ガス流出孔8
からガスが流出すると、このガスは上昇しながら周囲空
気と混合しつつ、スリット状開口部5から燃焼室1へと
流出する。この時、同時に、縦方向ガス流出孔9からガ
スが流出して盲部3にそって上昇しており、このガスは
前記スリット状開口部5から流出する混合気と良好に混
合する。かかる状態に於いて燃焼が実行されるため、傾
斜保炎板2に附着した良好な火炎が形成される。燃焼
は、このように細分割されながら燃焼するので、特別の
高温部が形成されず、窒素酸化物の発生を抑制すること
ができる。また、かかる燃焼は、同時にスリット状開口
部5の近傍では稀薄燃焼が進行し、盲部3上に於いて
は、ガスリッチ燃焼が進行する。かかる濃淡燃焼の進行
により、より一層、NOx発生を抑制することができ
る。In such a structure, the lateral gas outflow hole 8
When the gas flows out from the gas, the gas rises, mixes with the ambient air, and flows out from the slit-shaped opening 5 into the combustion chamber 1. At this time, at the same time, gas flows out from the vertical gas outflow hole 9 and rises along the blind portion 3, and this gas mixes well with the air-fuel mixture flowing out from the slit-shaped opening 5. Since the combustion is executed in this state, a good flame attached to the inclined flame stabilizing plate 2 is formed. Since the combustion is performed while being subdivided in this way, no special high temperature portion is formed, and the generation of nitrogen oxides can be suppressed. Further, in this combustion, at the same time, a lean burn progresses in the vicinity of the slit-shaped opening 5, and a gas-rich burn progresses on the blind portion 3. Due to the progress of the rich-lean combustion, NOx generation can be further suppressed.
【0008】[0008]
【発明の効果】本発明は以上の通りであるので、濃淡燃
焼と局所的な高温部を持たないゆるやかな燃焼が達成で
き、窒素酸化物の発生を効果的に抑制することができる
特徴がある。EFFECTS OF THE INVENTION As described above, the present invention is characterized in that rich and lean combustion and gentle combustion without a local high temperature portion can be achieved, and the generation of nitrogen oxides can be effectively suppressed. .
【図1】従来バーナの縦断的説明図である。FIG. 1 is a longitudinal explanatory view of a conventional burner.
【図2】従来バーナの斜視的説明図である。FIG. 2 is a perspective explanatory view of a conventional burner.
【図3】本発明バーナの一部切欠した斜視的説明図であ
る。FIG. 3 is a perspective explanatory view of the burner of the present invention with a part thereof cut away.
【図4】本発明のバーナの一部切欠した斜視的説明図で
ある。FIG. 4 is a perspective explanatory view in which the burner of the present invention is partially cut away.
【図5】本発明バーナの要部拡大説明図である。FIG. 5 is an enlarged explanatory view of a main part of the burner of the present invention.
【図6】本発明バーナの要部拡大説明図である。FIG. 6 is an enlarged explanatory view of a main part of the burner of the present invention.
【図7】本発明のバーナの斜視的説明図である。FIG. 7 is a perspective explanatory view of the burner of the present invention.
【図8】本発明のバーナの斜視的説明図である。FIG. 8 is a perspective explanatory view of the burner of the present invention.
【図9】本発明のバーナの斜視的説明図である。FIG. 9 is a perspective explanatory view of the burner of the present invention.
【図10】本発明のバーナの斜視的説明図である。FIG. 10 is a perspective explanatory view of the burner of the present invention.
1 燃焼室 2 傾斜保炎板 3 盲部 4 ガス室 5 スリット状開口部 6 空気室 7 ガス案内板 8 横方向ガス流出孔 9 縦方向ガス流出孔 9a 傾斜した縦方向ガス流出孔 9b 案内部材 DESCRIPTION OF SYMBOLS 1 Combustion chamber 2 Inclined flame holding plate 3 Blind part 4 Gas chamber 5 Slit-shaped opening 6 Air chamber 7 Gas guide plate 8 Lateral gas outflow hole 9 Vertical gas outflow hole 9a Inclined vertical gas outflow hole 9b Guide member
Claims (6)
し、該傾斜保炎板には盲部及びガス室に連通するスリッ
ト状開口部とを交互に構成し、前記盲部の空気室側に
は、ガス案内板を設置し、該ガス案内板の下端部には、
ガス室と連通する横方向ガス流出孔を形成し、前記盲部
の燃焼室側の下端部には、ガス室と連通し縦方向ガス流
出孔を形成した窒素酸化物低発生バーナ1. A combustion chamber is composed of a flared flame stabilizing plate, and a blind portion and a slit-shaped opening communicating with the gas chamber are alternately formed on the flame stabilizing plate. A gas guide plate is installed on the air chamber side, and at the lower end of the gas guide plate,
A low nitrogen oxide generation burner having a lateral gas outflow hole communicating with the gas chamber and a vertical gas outflow hole communicating with the gas chamber at the lower end of the blind portion on the combustion chamber side.
を空気室側と燃焼室側に於いて交互に構成した第1項記
載の窒素酸化物低発生バーナ2. A low nitrogen oxide generation burner according to claim 1, wherein the lateral gas outflow holes and the vertical gas outflow holes are alternately arranged on the air chamber side and the combustion chamber side.
型状に構成した第1項記載の窒素酸化物低発生バーナ3. A low-nitrogen oxide generation burner according to claim 1, wherein the combustion chamber is formed in a box shape with inclined flame holding plates facing each other.
した第1項記載の窒素酸化物低発生バーナ4. A low-nitrogen-oxide generating burner according to claim 1, wherein the combustion chamber is formed of an inclined flame holding plate into a cylindrical shape.
傾斜させて構成した第1項記載の窒素酸化物低発生バー
ナ5. The low nitrogen oxide generation burner according to claim 1, wherein the longitudinal gas outflow holes are inclined along the inclined flame stabilizing plate.
するガスを傾斜保炎板にそって案内する案内部材を設け
た第1項記載の窒素酸化物低発生バーナ6. The low-nitrogen-oxide generating burner according to claim 1, wherein a guide member for guiding the gas flowing out from the vertical gas outflow hole along the inclined flame stabilizing plate is provided in the combustion chamber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30837891A JP2918131B2 (en) | 1991-10-28 | 1991-10-28 | Burner with low nitrogen oxide generation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30837891A JP2918131B2 (en) | 1991-10-28 | 1991-10-28 | Burner with low nitrogen oxide generation |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05118512A true JPH05118512A (en) | 1993-05-14 |
JP2918131B2 JP2918131B2 (en) | 1999-07-12 |
Family
ID=17980349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30837891A Expired - Fee Related JP2918131B2 (en) | 1991-10-28 | 1991-10-28 | Burner with low nitrogen oxide generation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2918131B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014029256A (en) * | 2012-07-06 | 2014-02-13 | Tokyo Gas Co Ltd | Infrared combustion device |
-
1991
- 1991-10-28 JP JP30837891A patent/JP2918131B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014029256A (en) * | 2012-07-06 | 2014-02-13 | Tokyo Gas Co Ltd | Infrared combustion device |
Also Published As
Publication number | Publication date |
---|---|
JP2918131B2 (en) | 1999-07-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |