JPH02126011A - Surface combustion burner - Google Patents
Surface combustion burnerInfo
- Publication number
- JPH02126011A JPH02126011A JP27986288A JP27986288A JPH02126011A JP H02126011 A JPH02126011 A JP H02126011A JP 27986288 A JP27986288 A JP 27986288A JP 27986288 A JP27986288 A JP 27986288A JP H02126011 A JPH02126011 A JP H02126011A
- Authority
- JP
- Japan
- Prior art keywords
- corrugated
- plate
- fuel mixture
- combustion
- air
- 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 35
- 239000000446 fuel Substances 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 20
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 6
- 239000010935 stainless steel Substances 0.000 claims abstract description 6
- 229910002060 Fe-Cr-Al alloy Inorganic materials 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 11
- 238000001816 cooling Methods 0.000 abstract description 6
- 230000005855 radiation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 229910017060 Fe Cr Inorganic materials 0.000 description 1
- 229910002544 Fe-Cr Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Gas Burners (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、金属材料で多数の空燃混合気の小噴出口を形
成し、通常のバーナよりも高温でしかも低ＮＯＸ化でき
るようにした表面燃焼バーナに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention uses a metal material to form a large number of small air-fuel mixture nozzles, thereby making it possible to achieve higher temperatures and lower NOx than ordinary burners. Concerning surface combustion burners.
［従来の技術〕
従来、金網によって多数の小噴出口を有する燃焼面を形
成していた。[Prior Art] Conventionally, a combustion surface having a large number of small nozzles has been formed using a wire mesh.
［発明が解決し７ようとする課題］
しかし、十分な強度を金′Ｍに備えさせるために、金網
の線材をかなり大径にしなければならず、そのために空
燃混合気による金網の冷却が不十分になって、金網が裏
面まで高温に加熱され、逆火を生じやすい欠点があった
。又、耐酸化性の面から８００°Ｃ程度以上の表面温度
にはできず、放射加熱性能において不十分であった。[Problems to be Solved by the Invention] However, in order to provide the metal with sufficient strength, the diameter of the wire rod of the wire mesh must be made considerably large, and for this reason, the cooling of the wire mesh by the air-fuel mixture is difficult. If the temperature is insufficient, the wire mesh will be heated to a high temperature even on the back side, which has the disadvantage of easily causing backfire. Further, from the viewpoint of oxidation resistance, the surface temperature could not be increased to about 800° C. or higher, and the radiation heating performance was insufficient.
本発明の目的は、燃焼面を形成する＋Ａ料に十分な強度
を備えさせながら、空燃混合気の冷却作用によって燃焼
面形成用材料の裏面側温度を逆火防止に十分な低温に抑
えられるように、かつ、燃焼面形成用材料の表面側温度
を十分に高温にして、放射加熱性能向上を可能にする点
にある。The purpose of the present invention is to provide the +A material that forms the combustion surface with sufficient strength, while suppressing the temperature on the back side of the material for forming the combustion surface to a low enough temperature to prevent backfire by the cooling effect of the air-fuel mixture. In addition, the temperature on the surface side of the material for forming the combustion surface can be made sufficiently high to improve the radiation heating performance.
（課題を解決するための手段）
本発明の特徴構成は、Ｆｅ−Ｃｒ−Ａｌ系ステンレス鋼
の帯状薄板から成るコルゲートの表面にアルミナ皮膜を
形成し、前記コルゲートをその厚さ方向に接近並設して
、前記コルゲートどうしの間に多数の空燃混合気の小噴
出口を形成したことにあり、その作用効果は次の通りで
ある。(Means for Solving the Problems) The characteristic configuration of the present invention is that an alumina film is formed on the surface of a corrugate made of a strip-shaped thin plate of Fe-Cr-Al stainless steel, and the corrugates are arranged close to each other in the thickness direction. Therefore, a large number of small air-fuel mixture injection ports are formed between the corrugates, and the effects thereof are as follows.
（作 用）
つまり、帯状金属薄板を波板状に屈曲させたコルゲート
をその厚さ方向に接近並設して、多数の空燃混合気の小
噴出口を有する燃焼面を形成すると、コルゲートの厚さ
を例えばｌ１００ｕ以下というように極めて薄くしても
、燃焼面に要求される実用強度を十分に確保できる。(Function) In other words, if corrugates made by bending strip-shaped metal sheets into a corrugated sheet shape are arranged close to each other in the thickness direction to form a combustion surface with many small air-fuel mixture nozzles, the corrugate Even if the thickness is made extremely thin, for example, 1100 u or less, the practical strength required for the combustion surface can be sufficiently ensured.
従って、コルゲートを熱容量が極めて小さい上に空燃混
合気により十分に冷却される超薄板で形成でき、しかも
、コルゲートの巾を自由に選定して、コルゲートと空燃
混合気の接触距離を十分に長くでき、空燃混合気の冷却
作用でコルゲートの裏面側温度を確実に逆火の無い低温
に維持できる。Therefore, the corrugate can be formed from an ultra-thin plate that has an extremely small heat capacity and is sufficiently cooled by the air-fuel mixture, and the width of the corrugate can be freely selected to maintain a sufficient contact distance between the corrugate and the air-fuel mixture. The temperature on the back side of the corrugate can be reliably maintained at a low temperature without flashback due to the cooling effect of the air/fuel mixture.
その上、コルゲートの材料をＦｅ−Ｃｒ−Ａｌ系ステン
レス鋼の帯状薄板にして、熱処理によって析出するアル
ミナ皮膜をコルゲートの表面に形成してあるから、コル
ゲートの高温酸化を防止しながら、コルゲートの表面側
温度を例えばｔｏｏ。Moreover, since the material of the corrugate is a strip-shaped thin plate of Fe-Cr-Al stainless steel, and an alumina film that is precipitated by heat treatment is formed on the surface of the corrugate, the surface of the corrugate is prevented from being oxidized at high temperatures. For example, set the side temperature to too.
〜１２００°Ｃ程度の高温にでき、放射加熱性能を向上
できる。It can reach a high temperature of about 1200°C and improve radiation heating performance.
［発明の効果］
その結果、強度面で優れると共に逆火防止によって高負
荷燃焼とターンダウン比拡大を図れ、しかも、放射加熱
能力向上を図れる、−段と高性能な表面燃焼バーナを提
供できるようになった。[Effects of the Invention] As a result, it is possible to provide a surface combustion burner that is superior in strength, has high-load combustion and increases the turndown ratio by preventing flashback, and is capable of improving radiant heating capacity. Became.
請求項２に記載のように、アルミナ皮膜をアルミナウィ
スカで形成すると、放射加熱性能においてさらに優れた
ものにできる。If the alumina film is formed of alumina whiskers as described in claim 2, the radiation heating performance can be further improved.
請求項３に記載のように平滑板を介在させると、小噴出
口の大きさが均一になり、均一な表面燃焼を実現できる
。By interposing the smooth plate as described in claim 3, the sizes of the small jet ports become uniform, and uniform surface combustion can be realized.
次に第１図ないし第３図により実施例を示す。 Next, an embodiment will be shown with reference to FIGS. 1 to 3.
バーナ本体（１）にガス燃料供給路（２）と燃焼用空気
供給路（３）を接続し、燃焼表面（４）を形成する部材
（５）をバーナ本体（１）に取付けである。A gas fuel supply passage (2) and a combustion air supply passage (3) are connected to the burner body (1), and a member (5) forming a combustion surface (4) is attached to the burner body (1).
燃焼表面形成用部材（５）は、波板状に形成した帯状薄
板から成るコルゲート（５ａ）と、帯状薄板から成る平
滑板（５ｂ）を、重ねた状態で渦巻状に巻いたものであ
り、コルゲート（５ａ）と平滑板（５ｂ）の間に多数の
空燃混合気の小噴出口（６）を形成してある。The combustion surface forming member (5) is a corrugate (5a) made of a corrugated thin strip and a smooth plate (5b) made of a thin strip, which are stacked and wound in a spiral shape, A large number of small air-fuel mixture injection ports (6) are formed between the corrugated gate (5a) and the smooth plate (5b).
つまり、空燃混合気をバーナ本体（１）内から小噴出口
（６）に分配供給し、小噴出口（６）からの空燃混合気
を燃焼表面（４）で表面燃焼させるように構成してある
。In other words, the air-fuel mixture is distributed and supplied from within the burner body (1) to the small nozzle (6), and the air-fuel mixture from the small nozzle (6) is surface-burned on the combustion surface (4). It has been done.
コルゲート（５ａ）及び平滑板（５ｂ）のはＦｅ−Ｃｒ
−へｌ系ステンレス鋼から成り、その組成は
１２重量％＜ Ｃｒ ＜ ２８重量％
１重量％＜Ａｌ＜ ８重量％
である。Corrugate (5a) and smooth plate (5b) are Fe-Cr
- Made of helical stainless steel, its composition is 12% by weight < Cr < 28% by weight, 1% by weight < Al < 8% by weight.
コルゲート（５ａ）及び平滑板（５ｂ）の表面に、熱処
理によりアルミナ皮膜を形成して、燃焼表面（４）の高
温化と耐酸化性の向上を図っである。An alumina film is formed on the surfaces of the corrugate (5a) and the smooth plate (5b) by heat treatment to increase the temperature of the combustion surface (4) and improve oxidation resistance.
上記アルミナ皮膜は次のようなものである。The above alumina film is as follows.
（イ）長さが０．１ μｍ以上、望ましくは２μｍ以上
のアルミナウィスカから成る。(a) Consists of alumina whiskers with a length of 0.1 μm or more, preferably 2 μm or more.
（１１）均等な厚さの膜状アルミナから成る。(11) Consists of film-like alumina of uniform thickness.
（ハ）凹凸表面のある膜状アルミナから成る。(c) Made of film-like alumina with an uneven surface.
アルミナ皮膜形成のための熱処理条件は次の通りである
。The heat treatment conditions for forming the alumina film are as follows.
（イ）前処理：酸素濃度が０．１％以下の雰囲気におい
て、７００〜１０００°Ｃで１０秒以上加熱する。(a) Pretreatment: Heating at 700 to 1000°C for 10 seconds or more in an atmosphere with an oxygen concentration of 0.1% or less.
（０）本処理二大気雰囲気において８５０〜１０００”
Ｃで４時間以上加熱する。(0) 850 to 1000" in this treatment two-atmosphere atmosphere
Heat at C for at least 4 hours.
コルゲート（５ａ）及び平滑板（５ｂ）の厚さを１００
μｍ以下に、巾を１０ｍｍ以上に形成し、空燃混合気の
冷却作用で燃焼表面形成部材（５）の裏面側の昇温を逆
火防止できるように抑制すべく構成してある。又、コル
ゲー１１５ａ）のピッチヲ２．５ｆｆｎ＋＋程度に、か
つ、振巾を１ 、５ ｍｍ程度にしてある。The thickness of the corrugate (5a) and smooth plate (5b) is 100
μm or less and the width is 10 mm or more, and is configured to suppress the temperature rise on the back side of the combustion surface forming member (5) by the cooling effect of the air-fuel mixture so as to prevent backfire. Further, the pitch of the corrugator 115a) is set to about 2.5ffn++, and the swing width is set to about 1.5 mm.
次に別実施例を説明する。 Next, another embodiment will be described.
燃焼表面（４）を形成するための具体構造は適当に変更
でき、例えば下記（イ）項ないしく二）項の技術を利用
できる。The specific structure for forming the combustion surface (4) can be changed as appropriate, and for example, the techniques described in items (a) to 2) below can be used.
（イ）第４図（イ）に示すように、多数のコルゲート（
５ａ）と平滑板（５ｂ）を交互に重ねた状態で配置して
もよく、又、第４図（＋１）に示すように、コルゲート
（５ａ）と平滑板（５ｂ）を重ねた状態でジグザグ状
に屈曲させてもよく、さらに、平滑板（５ｂ）を省略し
てもよい。(a) As shown in Figure 4 (a), a large number of corrugates (
5a) and smooth plates (5b) may be arranged alternately, or as shown in Fig. 4 (+1), corrugated plates (5a) and smooth plates (5b) may be arranged in a zigzag pattern. Alternatively, the smooth plate (5b) may be omitted.
要するに、コルゲート（５ａ）をその厚さ方向に接近並
設して、コルゲート（５ａ）どうしの間に多数の小噴出
口（６）を形成してあればよい。In short, it is sufficient to arrange the corrugates (5a) close to each other in the thickness direction and form a large number of small ejection ports (6) between the corrugates (5a).
（Ｉ］）重ねて渦巻状に巻いたコルゲート（５ａ）と平
滑板（５ｂ）によって、隣接するコルゲート部分どうし
及び平滑板部分どうしの相対位相を中方向に相違させた
状態で、屈曲した任意形状の燃焼表面（４）を形成して
もよい。(I)) An arbitrary shape bent by a corrugate (5a) and a smooth plate (5b) which are overlapped and spirally wound, with the relative phases of adjacent corrugated parts and smooth plate parts being different in the middle direction. may form a combustion surface (4).
（ハ）コルゲート （５ａ）及び平滑板（５ｂ）の接近
並設で形成した層の複数を重ねて、内側の層から外側の
層に空燃混合気が流動する時に、小噴出口（６）どうし
の位置ズレによって分流と合流を生じさせて、空燃混合
気の混合を促進してもよい。(c) When a plurality of layers formed by closely arranging corrugates (5a) and smooth plates (5b) are stacked, and the air-fuel mixture flows from the inner layer to the outer layer, the small jet nozzle (6) Mixing of the air-fuel mixture may be promoted by causing branching and merging by positional deviation between the two.
（ニ）コルゲート（５ａ）を形成するに、その波形屈曲
においてピッチの小さい主炎口形成用部分とピンチの大
きい保炎口形成用部分を設け、保炎作用で低インプット
時にも安定燃焼できるようにして、ターンダウン比を拡
大してもよい。(d) To form the corrugate (5a), a part for forming a main flame port with a small pitch and a part for forming a flame holding port with a large pinch are provided in the waveform bending, so that stable combustion can be achieved even at low input with flame holding effect. The turndown ratio may be increased by increasing the turndown ratio.
（ネ）コルゲート （５ａ）の屈曲形状はサインカーブ
状、三角波状、角形波状、その他適当に変更でき、又、
コルゲート（５ａ）をその中方向において全長にわたり
屈曲させたり、あるいは、燃焼表面（４）側の端部のみ
を屈曲させ、冷却機能向上、空燃混合気の混合促進、逆
火防止促進などを図ってもよい。(N) The bent shape of the corrugate (5a) can be changed into a sine curve shape, triangular wave shape, square wave shape, or any other appropriate shape, and
The corrugate (5a) is bent along its entire length in the middle direction, or only the end on the combustion surface (4) side is bent to improve the cooling function, promote the mixing of the air-fuel mixture, and promote the prevention of backfire. It's okay.
ガス燃料の種類は都市ガス、天然ガス、プロパン、その
他適当なものを選定でき、又、表面燃焼バーナの用途は
不問である。The type of gas fuel can be city gas, natural gas, propane, or any other suitable fuel, and the surface combustion burner can be used for any purpose.
尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本発明は添付図面の構造
に限定されるものではない。Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.
次に実験例を示す。 Next, an experimental example will be shown.
前述の［実施例〕の欄で説明したものと同様の表面燃焼
バーナを用いて、コルゲート（５ａ）と平滑板（５ｂ）
として、アルミナ皮膜を有する木発明例と、有しない比
較例とを用い、ガス燃料として１３Ａガスを用い、燃焼
性能を調べたところ、次頁表に示す結果を得た。A corrugated plate (5a) and a smooth plate (5b) were prepared using a surface combustion burner similar to that described in the above [Example] section.
As a result, the combustion performance was investigated using wood invention examples with an alumina coating and comparative examples without an alumina coating, using 13A gas as the gas fuel, and the results shown in the table on the next page were obtained.
上記結果から明らかなように、コルゲートで燃焼表面を
形成すると、従来技術の８００°Ｃよりも高温で完全燃
焼でき、又、アルミナ皮膜をコルゲートに備えさせると
、−段と表面温度、発熱量及び面負荷の増大を図れる。As is clear from the above results, when the combustion surface is formed of corrugate, complete combustion can be achieved at a higher temperature than the 800°C of the conventional technology, and when the corrugate is provided with an alumina film, the surface temperature, calorific value and The surface load can be increased.
第１図ないし第３図は本発明の実施例を示し、第１図は
全体概念図、第２図は要部説明図、第３図は燃焼表面の
拡大図である。
第４ 図（イ）、（ロ）
は本発明の各別の実施例を示
ず要部図である。
（５ａ）
・・・・・・コルゲート、
（５ｂ）・・・・・・平滑板、
（６）・・・・・・小噴出口。1 to 3 show an embodiment of the present invention, in which FIG. 1 is an overall conceptual diagram, FIG. 2 is an explanatory diagram of the main part, and FIG. 3 is an enlarged view of the combustion surface. FIGS. 4(A) and 4(B) are main part views showing different embodiments of the present invention. (5a)...Corrugate, (5b)...Smooth plate, (6)...Small spout.
Claims (1)
るコルゲート（５ａ）の表面にアルミナ皮膜を形成し、
前記コルゲート（５ａ）をその厚さ方向に接近並設して
、前記コルゲート（５ａ）どうしの間に多数の空燃混合
気の小噴出口（６）を形成してある表面燃焼バーナ。 ２、前記コルゲート（５ａ）の表面に形成したアルミナ
皮膜がアルミナウィスカから成っている請求項１記載の
表面燃焼バーナ。 ３、Ｆｅ−Ｃｒ−Ａｌ系ステンレス鋼の帯状薄板から成
る平滑板（５ｂ）の表面にアルミナ皮膜を形成し、前記
コルゲート（５ａ）の隣接するものどうしの間に前記平
滑板（５ｂ）を介在させてある請求項１又は２記載の表
面燃焼バーナ。[Claims] 1. Forming an alumina film on the surface of a corrugate (5a) made of a strip-shaped thin plate of Fe-Cr-Al stainless steel,
A surface combustion burner in which the corrugates (5a) are arranged close to each other in the thickness direction to form a large number of small air-fuel mixture injection ports (6) between the corrugates (5a). 2. The surface combustion burner according to claim 1, wherein the alumina film formed on the surface of the corrugate (5a) is made of alumina whiskers. 3. Forming an alumina film on the surface of a smooth plate (5b) made of a strip-shaped thin plate of Fe-Cr-Al stainless steel, and interposing the smooth plate (5b) between adjacent corrugates (5a). The surface combustion burner according to claim 1 or 2, wherein the surface combustion burner is
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27986288A JPH02126011A (en) | 1988-11-04 | 1988-11-04 | Surface combustion burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27986288A JPH02126011A (en) | 1988-11-04 | 1988-11-04 | Surface combustion burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02126011A true JPH02126011A (en) | 1990-05-15 |
Family
ID=17616981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27986288A Pending JPH02126011A (en) | 1988-11-04 | 1988-11-04 | Surface combustion burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02126011A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798123A (en) * | 2011-05-26 | 2012-11-28 | 中山炫能燃气科技股份有限公司 | Infrared metal heating body and manufacturing method thereof |
| WO2018061972A1 (en) * | 2016-09-30 | 2018-04-05 | クリナップ株式会社 | Surface-treated metal member and heating device |
| JP2018141210A (en) * | 2017-02-28 | 2018-09-13 | クリナップ株式会社 | Surface treatment metallic component and heating apparatus |
-
1988
- 1988-11-04 JP JP27986288A patent/JPH02126011A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798123A (en) * | 2011-05-26 | 2012-11-28 | 中山炫能燃气科技股份有限公司 | Infrared metal heating body and manufacturing method thereof |
| WO2018061972A1 (en) * | 2016-09-30 | 2018-04-05 | クリナップ株式会社 | Surface-treated metal member and heating device |
| TWI734838B (en) * | 2016-09-30 | 2021-08-01 | 日商可麗娜有限公司 | Surface treatment metal parts, heating appliances |
| JP2018141210A (en) * | 2017-02-28 | 2018-09-13 | クリナップ株式会社 | Surface treatment metallic component and heating apparatus |
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