JPH01302015A - Combustion device - Google Patents
Combustion deviceInfo
- Publication number
- JPH01302015A JPH01302015A JP13181588A JP13181588A JPH01302015A JP H01302015 A JPH01302015 A JP H01302015A JP 13181588 A JP13181588 A JP 13181588A JP 13181588 A JP13181588 A JP 13181588A JP H01302015 A JPH01302015 A JP H01302015A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- cylindrical
- combustion chamber
- nozzle
- flame
- 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 53
- 239000000446 fuel Substances 0.000 claims abstract description 16
- 239000004071 soot Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract 4
- 238000009792 diffusion process Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Gas Burners (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、家庭用給湯機、暖房器、調理器等の熱源機に
関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to heat source devices such as domestic water heaters, space heaters, and cooking devices.
従来の技術
従来のこの種の燃焼装置は、第４図に示すように、円筒
状燃焼室１内の燃焼用空気の通路７内に旋回羽根６を設
けてお夛、この旋回羽根６が燃焼用空気に旋回を与え、
燃焼室１中心部の燃料用ノズル近傍に旋回火炎を形成す
るようになっていた。2. Description of the Related Art As shown in FIG. 4, a conventional combustion device of this type has a swirl vane 6 provided in a passage 7 for combustion air in a cylindrical combustion chamber 1, and this swirl vane 6 is used for combustion. Gives swirl to the air for use,
A swirling flame was formed near the fuel nozzle at the center of the combustion chamber 1.
図中２は燃料噴出用のノズル、５は燃焼室の内壁である
（例えば、実公昭６３−６５ＴＢ号公報）。In the figure, 2 is a fuel injection nozzle, and 5 is an inner wall of a combustion chamber (for example, Japanese Utility Model Publication No. 1983-65TB).
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、燃焼用空気の供給
の方法によって次の様な課題を有していた。即ち予混合
燃焼にすると騒音の高い燃焼を行ない、拡散燃焼にする
と煤の発生しやすい。そ°して保炎部の不安定な燃焼を
行ないやすいといった課題を有していた。Problems to be Solved by the Invention However, the above configuration has the following problems due to the method of supplying combustion air. That is, premix combustion results in noisy combustion, and diffuse combustion tends to generate soot. Then, there was a problem that unstable combustion was likely to occur in the flame stabilizing part.
本発明はかかる従来の課題を解消するもので、予混合・
拡散両燃焼を問わず低騒音で煤が発生しがたく、かつ安
定した燃焼を得ることを目的とするものである。The present invention solves such conventional problems, and
The objective is to achieve stable combustion with low noise and less generation of soot, regardless of whether it is diffusion or diffusion combustion.
課題を解決するための手段
上記課題を解決するために本発明の燃焼装置は、筒状の
燃焼室内の中央に、先端が有底筒状の燃料用多孔性ノズ
ルを設け、多孔性ノズルの基部と燃焼室内壁に隣接した
旋回羽根とで略同心円状に配置したものである。Means for Solving the Problems In order to solve the above problems, the combustion device of the present invention is provided with a porous fuel nozzle having a bottomed cylindrical tip in the center of a cylindrical combustion chamber, and a base of the porous nozzle. and a swirling vane adjacent to the inner wall of the combustion chamber, which are arranged approximately concentrically.
作 用
本発明は上記構成によって、加圧された燃料は多孔性ノ
ズルから燃焼室内に放射状に、かつ軸方向へと均一に噴
出される。この時、燃焼室内に供給される空気流は旋回
羽根を通過しながら燃焼室壁と多孔性ノズルとの間に旋
回流を形成し、燃焼室下流へと吐出する。従ってこの旋
回空気流は多孔性ノズルの円周上から噴出する燃料と衝
突しながら拡散・混合を促進しつつ点火源によシ着火し
、多孔性ノズルの周囲および下流へと旋回火炎を形成す
る。ノズルの表面積が大きいために、空気との拡散・混
合が瞬時にかつ充分に行なわれるので薄い旋回火炎を安
定して形成する。Operation According to the present invention, the pressurized fuel is ejected from the porous nozzle radially and axially uniformly into the combustion chamber. At this time, the airflow supplied into the combustion chamber passes through the swirling vanes, forms a swirling flow between the combustion chamber wall and the porous nozzle, and is discharged downstream of the combustion chamber. Therefore, this swirling air flow collides with the fuel ejected from the circumference of the porous nozzle, promoting diffusion and mixing, and ignites the ignition source, forming a swirling flame around the porous nozzle and downstream. . Since the nozzle has a large surface area, it can diffuse and mix with air instantaneously and sufficiently, thereby stably forming a thin swirling flame.
実施例 以下、本発明の実施例を添付図面に基づいて説明する。Example Embodiments of the present invention will be described below with reference to the accompanying drawings.
第１図〜第２図（、）において、１は円筒状の燃焼室で
、この燃焼室１の上流から送風機（記載せず）によシ燃
焼用空気が供給されている。そして、略中実軸上には先
端が有底状で円筒状の多孔性ノズル２が燃料管３に連な
る基部４を介して設けである。前記基部４と前記燃焼室
１の内壁５とに隣接して旋回羽根６が設けである。In FIGS. 1 and 2 (,), reference numeral 1 denotes a cylindrical combustion chamber, and combustion air is supplied from upstream of this combustion chamber 1 by a blower (not shown). A cylindrical porous nozzle 2 with a bottomed tip is provided on the substantially solid shaft via a base 4 connected to a fuel pipe 3. A swirl vane 6 is provided adjacent to the base 4 and the inner wall 5 of the combustion chamber 1.
上記構成において、加圧された燃料は燃料管ａを掻出し
て先端が有底状で円筒状の多孔性ノズル２の中央並びに
周囲よシ、燃焼室内へと均一に噴出される。この時、燃
焼室内を流れる空気は旋回羽根を通過後に所定の旋回流
を形成し、先端が有底状で円筒状の多孔性ノズル２の周
囲を取巻きながら燃焼室下流へと流れていく。この多孔
性ノズル２の周上から噴出する燃料と旋回空気とが衝突
し、高速に拡散・混合を促進しうる。この時、点火源（
記載せず）によシ着火し多孔性ノズル２の外周を覆うよ
うに円筒状の火炎を形成しかつ、ノズル先端にも火炎を
形成する。In the above configuration, the pressurized fuel is scraped out of the fuel pipe a and is uniformly ejected into the combustion chamber at the center and around the cylindrical porous nozzle 2 with a bottom end. At this time, the air flowing inside the combustion chamber forms a predetermined swirling flow after passing through the swirling vanes, and flows downstream of the combustion chamber while surrounding the cylindrical porous nozzle 2 with a bottomed tip. The fuel ejected from the circumference of the porous nozzle 2 collides with the swirling air, promoting diffusion and mixing at high speed. At this time, the ignition source (
(not shown) ignites to form a cylindrical flame so as to cover the outer periphery of the porous nozzle 2, and a flame is also formed at the tip of the nozzle.
この様に、高速拡散による均一性の高い円筒状火炎と多
孔性ノズルの下流に旋回流火炎を形成し予混合・拡散燃
焼を問わず煤の発生しにくい燃焼を広範囲に渡シ持続す
ることができる。In this way, by forming a highly uniform cylindrical flame due to high-speed diffusion and a swirling flame downstream of the porous nozzle, it is possible to sustain combustion that is difficult to generate soot over a wide range, regardless of whether it is premixed combustion or diffusion combustion. can.
次に本発明の他の実施例を第２図（ｂ）〜第３図を用い
て説明する。第２図（ｂ）〜第３図において前記実施例
と相違する点は先端を閉塞した円筒状の多孔性ノズルで
構成したことにアシ、この構成によれば多孔性ノズルの
円周上から噴出する燃料の量が増し多孔性ノズルの外周
を覆う円筒状旋回火炎の厚みが増して一層安定してかつ
多孔性ノズルの下流へ形成する旋回火炎が縮少し、予混
合・拡散燃焼を問わず煤の発生が一層しにくい燃焼を広
範囲に渡シ持続することができる。Next, another embodiment of the present invention will be described with reference to FIGS. 2(b) to 3. The difference between FIG. 2(b) and FIG. 3 from the previous embodiment is that the nozzle is constructed with a cylindrical porous nozzle with a closed end. As the amount of fuel increases, the thickness of the cylindrical swirling flame that covers the outer periphery of the porous nozzle increases, making it more stable, and the swirling flame that forms downstream of the porous nozzle shrinks, making it possible to reduce soot regardless of premixed or diffusion combustion. It is possible to sustain combustion over a wide range, making it even more difficult to generate.
発明の効果
以上の様に本発明の燃焼装置によれば次の効果が得られ
る。すなわち、円筒状の燃焼室内の略中夫に先端が有底
筒状の燃料用多孔性ノズルを設け、多孔性ノズルの基部
と燃焼室内壁間に旋回羽根を設けているので、多孔性ノ
ズルの外周上近傍で旋回流による高速拡散火炎を形成し
、多孔性ノズルの下流に一般的旋回火炎の大きさを変え
て形成するので予混合・拡散燃焼のいずれを問わずに低
騒音で煤の発生のしにくい燃焼を広範囲に渡シ持続する
ことができる。Effects of the Invention As described above, the combustion apparatus of the present invention provides the following effects. In other words, a porous fuel nozzle with a bottomed cylindrical tip is provided in a hollow shaft inside a cylindrical combustion chamber, and a swirl vane is provided between the base of the porous nozzle and the wall of the combustion chamber. A high-speed diffusion flame is formed near the outer periphery due to swirling flow, and a general swirling flame of varying size is formed downstream of the porous nozzle, so it generates soot with low noise regardless of premixing or diffusion combustion. It is difficult to burn and can be sustained over a wide range.
＠１図は本発明の第１の実施例における燃焼装置の断面
図、第２図（、）は第１図の実施例の要部拡大断面図、
第２図（ｂ）は本発明の第２の実施例の要部拡大断面図
、第３図は同燃焼装置の縦断面図、第４図は従来の燃焼
装置のバーナ部の要部拡大断面図であるｇ
１・・・・・・燃焼室、２・・・・・・多孔性ノズル、
４・・・・・基部、５・・・・・・内壁、６・・・・・
・旋回羽根。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名（−
ｆ焼室
８−−一 壜し Ｌ 性 ノ ；乏 ル４− 蟇
都
５−御一同 壁
６−旋回羽根
第１図
／ ／
、α） ５−内 壁@ Figure 1 is a sectional view of the combustion device in the first embodiment of the present invention, Figure 2 (, ) is an enlarged sectional view of the main part of the embodiment in Figure 1,
FIG. 2(b) is an enlarged cross-sectional view of the main part of the second embodiment of the present invention, FIG. 3 is a longitudinal cross-sectional view of the same combustion apparatus, and FIG. 4 is an enlarged cross-section of the main part of the burner part of the conventional combustion apparatus. Figure g 1... Combustion chamber, 2... Porous nozzle,
4...Base, 5...Inner wall, 6...
・Swirl blade. Name of agent: Patent attorney Toshio Nakao and one other person (-
Baking chamber 8--1 Bottle L sex;
Miyako 5 - Everyone Wall 6 - Swivel vane Figure 1 / / , α) 5 - Inner wall
Claims (1)
用多孔性ノズルと、前記多孔性ノズルの基部と前記燃焼
室内壁との間に設けられた旋回羽根とを備えた燃焼装置
。A combustion device comprising: a cylindrical porous fuel nozzle with a bottom end provided at the center of a cylindrical combustion chamber; and a swirl vane provided between a base of the porous nozzle and a wall of the combustion chamber. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13181588A JPH01302015A (en) | 1988-05-30 | 1988-05-30 | Combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13181588A JPH01302015A (en) | 1988-05-30 | 1988-05-30 | Combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01302015A true JPH01302015A (en) | 1989-12-06 |
Family
ID=15066752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13181588A Pending JPH01302015A (en) | 1988-05-30 | 1988-05-30 | Combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01302015A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5791894A (en) * | 1995-12-02 | 1998-08-11 | Abb Research Ltd. | Premix burner |
-
1988
- 1988-05-30 JP JP13181588A patent/JPH01302015A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5791894A (en) * | 1995-12-02 | 1998-08-11 | Abb Research Ltd. | Premix burner |
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