JPH01302014A - Combustion device - Google Patents
Combustion deviceInfo
- Publication number
- JPH01302014A JPH01302014A JP63131814A JP13181488A JPH01302014A JP H01302014 A JPH01302014 A JP H01302014A JP 63131814 A JP63131814 A JP 63131814A JP 13181488 A JP13181488 A JP 13181488A JP H01302014 A JPH01302014 A JP H01302014A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- combustion chamber
- nozzle
- cylindrical
- swirling
- 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
Landscapes
- Gas Burners (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
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２図に示すように、円筒
状の燃焼室１内の燃焼用空気の通路７内に旋回羽根６を
設けており、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２近傍に旋回火炎を形
成するようになっていた。（例えば、実公昭６３−６５
７８号公報）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。2. Description of the Related Art As shown in FIG. 2, a conventional combustion device of this type has a swirl vane 6 provided in a combustion air passage 7 in a cylindrical combustion chamber 1. A swirling flame is formed in the vicinity of the fuel nozzle 2 at the center of the combustion chamber 1 by swirling the air. (For example, Jikko 63-65
Publication No. 78) 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, while diffusion combustion tends to generate soot and tends to cause unstable combustion in the flame-holding area.
本発明はかかる従来の課題を解消するもので、予混合・
拡散再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 purpose of this is to achieve stable combustion with low noise and less generation of soot, regardless of diffusion reburning.
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、先端にノズル小孔を有する燃料用の
筒状の多孔性ノズルを設け、多孔性ノズルの基部と燃焼
室内壁の間に燃焼空気に旋回を与える旋回羽根を設けた
ものである。Means for Solving the Problems In order to solve the above problems, the combustion device of the present invention includes a cylindrical porous nozzle for fuel having a small nozzle hole at the tip in the center of the cylindrical combustion chamber. A swirl vane is provided between the base of the nozzle and the inner wall of the combustion chamber to swirl the combustion air.
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
多孔性ノズルから噴出する燃料と衝突しながら高速に拡
散・混合を促進しつつ点火源により着火し、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
表面積が大きい為に、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 above-described structure, the pressurized fuel is ejected from the porous nozzle into the combustion chamber radially and axially. 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 airflow collides with the fuel ejected from the porous nozzle, promoting diffusion and mixing at high speed, and is ignited by the ignition source, forming a swirling flame around and downstream of the porous nozzle. Since the surface area of the nozzle is large, diffusion and mixing with air is instantaneous and sufficient, and a thin swirling flame is stably formed.
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
の上流からファン（記載せず）により燃焼用空気が供給
されている。そして、略中実軸上には先端部にノズル小
孔２ｍを有する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の内望５とに接して燃焼用空気に旋回を与える旋回
羽、根６が設けである。In Fig. 1, 1 is a cylindrical combustion chamber;
Combustion air is supplied from upstream by a fan (not shown). A cylindrical porous nozzle 2 having a small nozzle hole 2m at its tip is provided on the substantially solid shaft via a base 4 connected to a fuel pipe 3. A swirl vane or root 6 is provided in contact with the base 4 and the interior 5 of the combustion chamber 1 to swirl the combustion air.
上記構成において、燃料は燃料管３を経由して先端部に
ノズル小孔２ａを有する多孔性ノズル２の中央並びに周
囲より、燃焼室１内へと噴出される。この時′、燃焼室
内を流れる空気は旋回羽根６により旋回流を形成し、多
孔性ノズル２を取巻きながら燃焼室下流へと流れていく
。この多孔性ノズルの周上から噴出する燃料と旋回空気
とが衝突し、拡散混合を促進して多孔性ノズルを覆うよ
うに円筒状の火炎並びに予混合領域を形成しかつ、ノズ
ル先端からも火炎を形成する。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り持続することができる。In the above configuration, fuel is ejected into the combustion chamber 1 from the center and periphery of the porous nozzle 2 having a small nozzle hole 2a at its tip via the fuel pipe 3. At this time, the air flowing inside the combustion chamber forms a swirling flow by the swirling vanes 6, and flows downstream of the combustion chamber while surrounding the porous nozzle 2. The fuel ejected from the circumference of the porous nozzle collides with the swirling air, promoting diffusion mixing and forming a cylindrical flame and premixing area to cover the porous nozzle. form. In this way, a highly uniform cylindrical flame due to high-speed diffusion and a swirling flame downstream of the porous nozzle are formed, making it possible to sustain combustion with low soot generation over a wide range, regardless of whether it is premixed or diffused combustion. .
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、筒状の燃焼室内の中央に、先端にノズル
小孔を有する燃料用の筒状の多孔性ノズルを設け、多孔
性ノズル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
火炎を形成あるいは予混合気を形成し、さらに多孔性ノ
ズルの下流に一般的旋回火炎を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しにくい燃
焼を広範囲に渡り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 cylindrical porous nozzle for fuel with a small nozzle hole at the tip is provided in the center of the cylindrical combustion chamber, and a swirl vane is provided between the porous nozzle base and the combustion chamber wall. A high-speed diffusion flame or premixture is formed near the outer periphery of the nozzle due to swirling flow, and a general swirling flame is formed downstream of the porous nozzle, resulting in low noise regardless of premixing or diffusion combustion. It is possible to sustain combustion over a wide range with less soot generation.
第１図は本発明の実施例における燃焼装置の要部拡大断
面図、第２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。
１・・・・・・燃焼室、２・・・・・・多孔性ノズル、
２ａ・・・・・・ノズル小孔、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名筆
１ 図 ６− 茨ｒ
ｉ：Ｊ羽吸第２図FIG. 1 is an enlarged sectional view of a main part of a combustion apparatus according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of a main part of a burner section of a conventional combustion apparatus. 1... Combustion chamber, 2... Porous nozzle,
2a... Nozzle small hole, 4... Base, 5
...Inner wall, 6...Swivel vane. Name of agent: Patent attorney Toshio Nakao and one other person
1 Figure 6- Thorn r
i: J Hanasuki Figure 2
Claims (1)
を有する筒状の燃料用の多孔性ノズルと、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 cylindrical porous fuel nozzle provided at the center of a cylindrical combustion chamber and having a small nozzle hole at its tip, and a swirl vane provided between a base of the porous nozzle and a wall of the combustion chamber. Combustion device equipped with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63131814A JPH01302014A (en) | 1988-05-30 | 1988-05-30 | Combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63131814A JPH01302014A (en) | 1988-05-30 | 1988-05-30 | Combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01302014A true JPH01302014A (en) | 1989-12-06 |
Family
ID=15066730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63131814A Pending JPH01302014A (en) | 1988-05-30 | 1988-05-30 | Combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01302014A (en) |
-
1988
- 1988-05-30 JP JP63131814A patent/JPH01302014A/en active Pending
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