JPH07151318A - Combustion device - Google Patents

Combustion device

Info

Publication number
JPH07151318A
JPH07151318A JP32974393A JP32974393A JPH07151318A JP H07151318 A JPH07151318 A JP H07151318A JP 32974393 A JP32974393 A JP 32974393A JP 32974393 A JP32974393 A JP 32974393A JP H07151318 A JPH07151318 A JP H07151318A
Authority
JP
Japan
Prior art keywords
combustion
thick
mixing chamber
rich
gas chamber
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
Application number
JP32974393A
Other languages
Japanese (ja)
Other versions
JP3109360B2 (en
Inventor
Masahiko Shimazu
政彦 嶋津
Satoshi Nakai
諭 仲井
Hideo Ueda
英雄 植田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Noritz Corp
Original Assignee
Noritz Corp
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 Noritz Corp filed Critical Noritz Corp
Priority to JP05329743A priority Critical patent/JP3109360B2/en
Publication of JPH07151318A publication Critical patent/JPH07151318A/en
Application granted granted Critical
Publication of JP3109360B2 publication Critical patent/JP3109360B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Gas Burners (AREA)

Abstract

PURPOSE:To enable thick and thin fuel combustion to be simply effected utilizing a general Bunsen type combustion device by a method wherein a guide section, provided below a thick gas chamber, is arranged so as to have a gap between the upper surface of a combustion tube so that gas from the injection port of a combustion tube is distributed into a thick gas chamber and a mixing chamber. CONSTITUTION:A thick and thin flame part constituting body 5, formed at the upper part of a Bunsen type combustion device, is defined and formed so that a mixing chamber 7 is positioned above an air passage 4 and a thick gas chamber 6 is positioned above a combustion tube1. A thick side flame port 8 is provided at the upper part of the thick gas chamber 6, a thin side flame port 10 is provided at the upper part of a mixing chamber 7 through a thin side flame port forming body 9 and a guide unit 11, distributing and guiding gas from the injection port 2 of the combustion tube 1 into the thick gas chamber 6 and a mixing chamber 7, is provided at the lower part of the mixing chamber. The guide unit 11 of the thick and thin flame port constituting body 5 is arranged so as to keep the gap 12 of about 1mm between the guide unit 11 and the flame port surface of a combustion tube. According to this method, thick and thin fuel combustion, can be effected simply.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、濃淡燃焼方式の燃焼装
置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus of a rich and lean combustion type.

【0002】[0002]

【従来の技術】従来、低NOx化を計った燃焼方式の一
つとして濃淡燃焼方式があり、各種構造のものが提案さ
れている。例えば特公昭57−12923号公報に記載
されているセラミック等の炎孔板を用いたものがあるが
製造上高価なものとなる。又、金属板の燃焼管方式で実
現したものとして例えば特開平2−306005号公報
に記載されたものがあるが、これは二重構造型燃焼管に
なっており構造が複雑となる。又、例えば特開平3−2
63501号公報に記載されているもののように、淡側
の第1バーナと濃側の第2バーナとを交互に並設したも
のがあるが、構造は簡単化するが次のような問題があ
る。
2. Description of the Related Art Conventionally, there is a rich and lean combustion system as one of combustion systems designed to reduce NOx, and various structures have been proposed. For example, there is one using a flame hole plate such as a ceramic disclosed in Japanese Patent Publication No. 57-12923, but it is expensive in manufacturing. There is a metal plate combustion tube system disclosed in, for example, Japanese Patent Application Laid-Open No. 2-306005, but this is a double structure type combustion tube and its structure is complicated. Also, for example, Japanese Patent Laid-Open No. 3-2
As described in Japanese Patent No. 63501, there are some ones in which the light side first burners and the dark side second burners are alternately arranged, but the structure is simplified but the following problems occur. .

【0003】[0003]

【発明が解決しようとする課題】即ち、多数の燃焼管を
密接して並設し、濃側と淡側の燃焼管を交互に隣接させ
るものは燃焼管構造は簡単にできるが、密接させるため
にバーナケース(燃焼管の位置決め)の精度が必要とな
り、又密接できず間隙が生じると強制給気する場合、バ
ーナ間に空気が流れるおそれがあり、その場合、淡バー
ナの火炎の耐リフティング性能は大きく低下する。
That is, a structure in which a large number of combustion tubes are closely arranged side by side and the combustion tubes on the dark side and the combustion side on the light side are alternately adjacent to each other is simple in the combustion tube structure, but they are closely arranged. In this case, the accuracy of the burner case (positioning of the combustion tube) is required, and if forced air supply occurs due to the inability to make close contact, air may flow between the burners. Is greatly reduced.

【0004】本発明は、2次空気通路となる間隙を存し
て燃焼管が並設されている一般的なブンゼン式燃焼装置
を利用して簡単に濃淡燃焼を行うことができるようにし
た燃焼装置の提供を目的とするものである。
The present invention uses a general Bunsen type combustion apparatus in which combustion tubes are arranged in parallel with each other with a gap serving as a secondary air passage, so that the rich and lean combustion can be easily performed. The purpose is to provide a device.

【0005】[0005]

【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、上部に噴出孔を有する複数本の燃焼管を空
気通路を存して並設したブンゼン式燃焼装置において、
その上部に、燃焼管上方に濃ガス室、空気通路上方に混
合室が位置するように区画形成し、濃ガス室上部に濃側
炎孔、混合室上部に淡側炎孔を設けると共に、濃ガス室
の下部に案内部を設けた濃淡炎孔構成体を形成したもの
であって、案内部は燃焼管の噴出孔からのガスが濃ガス
室と混合室に分流するように燃焼管上面と間隙を存して
配設したものである。
In order to achieve the above object, the present invention provides a Bunsen type combustion apparatus in which a plurality of combustion pipes having ejection holes in the upper part thereof are arranged side by side in the presence of an air passage.
In the upper part, a compartment is formed so that the rich gas chamber is located above the combustion pipe and the mixing chamber is located above the air passage.The dense side flame hole is provided at the upper part of the rich gas chamber and the light side flame hole is provided at the upper part of the mixing chamber. A dense and rich flame hole structure is formed by providing a guide section in the lower part of the gas chamber, and the guide section is provided on the upper surface of the combustion tube so that the gas from the ejection hole of the combustion tube is divided into the rich gas chamber and the mixing chamber. It is arranged with a gap.

【0006】[0006]

【作用】燃焼時、燃焼管の噴出孔から噴出したガスは、
案内部により濃ガス室側と混合室側に分流し、濃ガス室
上部の濃側炎孔から噴出燃焼して濃炎を形成すると共
に、混合室に流入したガスは空気通路を流通する空気と
混合し、淡ガスを生成して淡側炎孔から噴出燃焼し淡炎
を形成する。このように、ブンゼン式燃焼装置の上部に
濃淡炎孔構成体を配設するだけで、既存のものを利用し
て簡単に濃淡燃焼方式に変更することができる。
[Operation] During combustion, the gas ejected from the ejection holes of the combustion pipe is
The guide part splits the gas into the rich gas chamber side and the mixing chamber side, ejects and burns from the rich side flame hole in the upper part of the rich gas chamber to form a rich flame, and the gas flowing into the mixing chamber is exchanged with the air flowing through the air passage. After mixing, a light gas is generated and ejected from the light side flame hole and burned to form a light flame. In this way, by simply disposing the rich / lean flame hole structure on the upper part of the Bunsen type combustion device, it is possible to easily change to the rich / lean combustion system using an existing one.

【0007】[0007]

【実施例】図1は本発明の一実施例を示す要部斜視図で
ある。
DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of an essential part showing an embodiment of the present invention.

【0008】1は上部に炎孔2を有する燃焼管で、図示
しないベンチュリー部、ノズル等を備え、又補炎を形成
する減圧壁3を有し、これを空気通路4を存して複数並
設しブンゼン式燃焼装置を構成している。
Reference numeral 1 is a combustion tube having a flame hole 2 in the upper portion thereof, which is provided with a venturi portion (not shown), a nozzle and the like, and also has a pressure reducing wall 3 for forming a supplementary flame. It constitutes a Bunsen type combustion device.

【0009】5はブンゼン式燃焼装置の上部に形成した
濃淡炎孔構成体で、燃焼管1上方に濃ガス室6、空気通
路4上方に混合室7が位置するように区画形成してあ
り、濃ガス室6上部に濃側炎孔8、混合室7上部に淡側
炎孔形成体9により淡側炎孔10を設けると共に、下部
に燃焼管1の噴出孔2からのガスを濃ガス室6と混合室
7に分流案内する案内部11を設けてある。この濃淡炎
孔構成体5を案内部11が燃焼管炎孔面と1ミリ前後の
間隙12を存して配設してある。13は濃淡炎孔構成体
5の両側に設けた閉塞板で、空気の流入を防止し、両側
端部に濃炎が形成されるようにしたものである。
Reference numeral 5 is a rich / lean flame hole forming body formed in the upper part of the Bunsen type combustion apparatus, and is partitioned and formed so that the rich gas chamber 6 is located above the combustion tube 1 and the mixing chamber 7 is located above the air passage 4. A dense flame hole 8 is provided above the rich gas chamber 6, and a light flame hole 10 is provided above the mixing chamber 7 by a light flame former 9 and the gas from the ejection holes 2 of the combustion pipe 1 is provided at the lower part. 6 and a mixing chamber 7 are provided with a guide portion 11 for branching the flow. A guide portion 11 of the rich and rich flame hole structure 5 is arranged with a gap 12 of about 1 mm from the combustion pipe flame hole surface. Reference numeral 13 is a blocking plate provided on both sides of the rich and rich flame hole structure 5 to prevent air from flowing in and to form rich flame at both end portions.

【0010】尚、本実施例の濃側炎孔8は、濃ガス室6
上面にスリット状に穿設しているが、これを図2に示す
ように濃ガス室6の上面を開口して濃側炎孔8としても
よい。
The dense flame hole 8 of this embodiment is provided with a rich gas chamber 6
Although the upper surface is formed in a slit shape, the upper surface of the rich gas chamber 6 may be opened to form the thick flame hole 8 as shown in FIG.

【0011】上記構成において、燃焼時、燃焼管1内の
濃ガスは上部の噴出孔2から噴出し、燃焼管1上方に形
成された濃ガス室6と混合室7側に案内部11により分
流し、濃ガス室6に流入したガスは上部に設けた濃側炎
孔8から噴出燃焼して濃炎を形成すると共に、混合室7
に流入したガスは空気通路4を流通する空気と混合し、
淡ガスを生成して上部に設けた淡側炎孔10から噴出燃
焼して淡炎を形成する。このように並設した燃焼管1の
上方に濃淡炎孔構成体5により、濃炎と淡炎が交互に形
成され安定した濃淡燃焼を行うことができる。又、火炎
全体の外側が淡炎となると燃焼が不安定となるため、最
外側に閉塞板13を設けて空気の流入を阻止し、濃炎を
形成するようにして燃焼を安定化している。
In the above structure, during combustion, the rich gas in the combustion tube 1 is ejected from the ejection holes 2 in the upper portion, and is divided by the guide portion 11 toward the rich gas chamber 6 and the mixing chamber 7 formed above the combustion tube 1. The gas flowing and flowing into the rich gas chamber 6 is jetted and burned from the dense flame hole 8 provided at the upper portion to form a rich flame, and at the same time, the mixing chamber 7
The gas flowing into the air mixes with the air flowing through the air passage 4,
A light gas is generated and jetted and burned from the light side flame hole 10 provided in the upper part to form a light flame. Thus, the rich and rich flame hole structure 5 is provided above the combustion tubes 1 arranged side by side, so that rich and lean flames are alternately formed and stable rich and lean combustion can be performed. Further, if the outer side of the entire flame becomes a light flame, the combustion becomes unstable. Therefore, the closing plate 13 is provided on the outermost side to block the inflow of air and form the rich flame to stabilize the combustion.

【0012】[0012]

【発明の効果】本発明は以上のように、複数本の燃焼管
を空気通路を存して並設したブンゼン式燃焼装置の上方
に、濃側炎孔と淡側炎孔とを区画形成する濃淡炎孔構成
体を設け、燃焼管の噴出孔からの濃ガスを濃側炎孔に、
又空気と混合して生成した淡ガスを淡側炎孔に分流供給
するようにしたので、簡単に濃淡燃焼させることがで
き、既存のブンゼン式燃焼装置を利用して簡単に濃淡燃
焼方式に変更し、低NOx化することができる。
As described above, according to the present invention, a thick-side flame hole and a light-side flame hole are formed above the Bunsen type combustion apparatus in which a plurality of combustion tubes are arranged side by side with an air passage. Providing a rich and rich flame hole structure, rich gas from the ejection hole of the combustion tube to the rich side flame hole,
In addition, since the light gas generated by mixing with air is separately supplied to the light side flame hole, it is possible to easily perform rich and lean combustion, and easily change to the rich and lean combustion method using the existing Bunsen type combustion device. However, NOx can be reduced.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例を示す要部斜視図である。FIG. 1 is a perspective view of an essential part showing an embodiment of the present invention.

【図2】他の実施例を示す要部断面図である。FIG. 2 is a cross-sectional view of an essential part showing another embodiment.

【符号の説明】[Explanation of symbols]

1 燃焼管 2 噴出孔 4 空気通路 5 濃淡炎孔構成体 6 濃ガス室 7 混合室 8 濃側炎孔 10 淡側炎孔 11 案内部 12 間隙 DESCRIPTION OF SYMBOLS 1 Combustion pipe 2 Jet hole 4 Air passage 5 Concentration flame hole structure 6 Concentration gas chamber 7 Mixing chamber 8 Thick side flame hole 10 Light side flame hole 11 Guide part 12 Gap

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 上部に噴出孔を有する複数本の燃焼管を
空気通路を存して並設したブンゼン式燃焼装置におい
て、その上部に、燃焼管上方に濃ガス室、空気通路上方
に混合室が位置するように区画形成し、濃ガス室上部に
濃側炎孔、混合室上部に淡側炎孔を設けると共に、濃ガ
ス室の下部に案内部を設けた濃淡炎孔構成体を形成した
ものであって、案内部は燃焼管の噴出孔からのガスが濃
ガス室と混合室に分流するように燃焼管上面と間隙を存
して配設したことを特徴とする燃焼装置。
1. A Bunsen type combustion apparatus in which a plurality of combustion tubes having ejection holes in the upper portion are arranged side by side with an air passage, and in the upper portion, a rich gas chamber is provided above the combustion tubes and a mixing chamber is provided above the air passage. Is formed so that the dark side flame hole is formed in the upper part of the rich gas chamber, the light side flame hole is provided in the upper part of the mixing chamber, and the guide part is provided in the lower part of the rich gas chamber. The combustion apparatus is characterized in that the guide portion is arranged with a gap from the upper surface of the combustion tube so that the gas from the ejection hole of the combustion tube is divided into the rich gas chamber and the mixing chamber.
JP05329743A 1993-11-30 1993-11-30 Combustion equipment Expired - Fee Related JP3109360B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP05329743A JP3109360B2 (en) 1993-11-30 1993-11-30 Combustion equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP05329743A JP3109360B2 (en) 1993-11-30 1993-11-30 Combustion equipment

Publications (2)

Publication Number Publication Date
JPH07151318A true JPH07151318A (en) 1995-06-13
JP3109360B2 JP3109360B2 (en) 2000-11-13

Family

ID=18224790

Family Applications (1)

Application Number Title Priority Date Filing Date
JP05329743A Expired - Fee Related JP3109360B2 (en) 1993-11-30 1993-11-30 Combustion equipment

Country Status (1)

Country Link
JP (1) JP3109360B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030021915A (en) * 2001-09-10 2003-03-15 주식회사 경동보일러 Bunsen gas burner of gas heater

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030021915A (en) * 2001-09-10 2003-03-15 주식회사 경동보일러 Bunsen gas burner of gas heater

Also Published As

Publication number Publication date
JP3109360B2 (en) 2000-11-13

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