JPH01302015A - Combustion device - Google Patents

Combustion device

Info

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
Application number
JP13181588A
Other languages
Japanese (ja)
Inventor
Tadashi Ono
正 大野
Noboru Ishibashi
昇 石橋
Masahiro Indo
引頭 正博
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP13181588A priority Critical patent/JPH01302015A/en
Publication of JPH01302015A publication Critical patent/JPH01302015A/en
Pending legal-status Critical Current

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  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)

Abstract

PURPOSE:To enable a combustion of less noise and producing less amount of soot regardless of a premixing or a dispersion type combustion to be continued over a wide range by a method wherein a porous cylindrical nozzle for fuel having a bottom part at its extremity end is provided at a substantial central part within a cylindrical combustion chamber and a rotating vane is arranged between a base part of the porous nozzle and an inner wall of the combustion chamber. CONSTITUTION:Pressurized fuel passes through a fuel pipe 3 and is injected uniformly from a central part and a circumferential part of a cylindrical porous nozzle 2 having an extremity end with a bottom part into a combustion chamber 1. At this time, air flowing within the combustion chamber 1 may form a predetermined rotating flow after passing through a rotating vane 6, encloses around the cylindrical porous nozzle 2 having a bottom part at its extremity end, flows to a downstream end of the combustion chamber 1, resulting in that the fuel is struck against the rotating air and then a high-speed dispersion and mixing operation can be promoted. At this time, a cylindrical flame is formed in such a way as it may cover an outer circumference of the porous nozzle 2 ignited and a flame is also formed at an extremity end of the nozzle. In this way, a cylindrical flame having a high uniformity caused by a high-speed dispersion and a rotating flame at a downstream side of the porous nozzle 2 are formed, resulting in that a combustion producing less amount of soot without having any relation with a premixing and dispersion type combustion can be continued over a wide range.

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.

【図面の簡単な説明】[Brief explanation of the drawing]

@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)

【特許請求の範囲】[Claims] 筒状の燃焼室内の中央に設けられた先端有底筒状の燃料
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. .
JP13181588A 1988-05-30 1988-05-30 Combustion device Pending JPH01302015A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5791894A (en) * 1995-12-02 1998-08-11 Abb Research Ltd. Premix burner

Cited By (1)

* Cited by examiner, † Cited by third party
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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