JP3098381B2 - Surface burning burner - Google Patents
Surface burning burnerInfo
- Publication number
- JP3098381B2 JP3098381B2 JP06162175A JP16217594A JP3098381B2 JP 3098381 B2 JP3098381 B2 JP 3098381B2 JP 06162175 A JP06162175 A JP 06162175A JP 16217594 A JP16217594 A JP 16217594A JP 3098381 B2 JP3098381 B2 JP 3098381B2
- Authority
- JP
- Japan
- Prior art keywords
- burner
- combustion
- thickness
- heat
- burner element
- 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.)
- Expired - Lifetime
Links
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- Gas Burners (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、面構造体からなるバー
ナエレメントの表面で全一次燃焼させる表面燃焼バーナ
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface combustion burner for performing all-primary combustion on the surface of a burner element composed of a planar structure.
【０００２】[0002]
【従来の技術】セラミック綿をバーナエレメントとして
バーナの燃焼面に配置して、暖房、調理などの用途に使
用する表面燃焼バーナが、種種提案されている（たとえ
ば、特開昭５６−５９１１６号公報、特開昭５６−５６
５１４号公報、特開昭５７−４７１２０号公報）。この
種の表面燃焼バーナは、燃料ガスと燃焼用空気との予混
合気をバーナエレメントを形成するセラミック繊維の隙
間を通過させて供給し、バーナエレメントの表面で燃焼
させてセラミック繊維を赤熱させる。また、燃焼面の通
気抵抗が大きいため、ブロワなどの強制給気手段で燃焼
用空気を供給する加圧式バーナとなっている。2. Description of the Related Art Various types of surface combustion burners have been proposed in which ceramic cotton is arranged as a burner element on the combustion surface of the burner and used for applications such as heating and cooking (for example, JP-A-56-59116). JP-A-56-56
514, JP-A-57-47120). This type of surface combustion burner supplies a premixed gas of fuel gas and combustion air through a gap between ceramic fibers forming a burner element, and burns the surface of the burner element to glow the ceramic fibers. Further, since the ventilation resistance of the combustion surface is large, the pressure burner is configured to supply combustion air by forced air supply means such as a blower.
【０００３】[0003]
【発明が解決しようとする課題】バーナエレメントは、
所定の厚さと密度が必要であるとともにケーシングなど
で保持されるため、バーナの構造が複雑となるとともに
燃焼面は単純な形状に限られている。また、バーナエレ
メントに使用されるセラミック繊維は、赤熱までの時間
短縮のため熱伝導の大きい細いセラミック繊維を用い
る。このため、機械的強度が小さく、赤熱時に繊維が千
切れて火の粉となって消耗し易く耐久性が不充分となり
易い。The burner element is
Since a predetermined thickness and density are required and are held by a casing or the like, the structure of the burner becomes complicated and the combustion surface is limited to a simple shape. Further, as the ceramic fiber used for the burner element, a thin ceramic fiber having high heat conductivity is used to shorten the time until red heat. For this reason, the mechanical strength is small, and the fibers tend to be cut off at the time of glowing and become fire sparks, and are easily consumed and insufficient in durability.
【０００４】請求項１に記載の発明の目的は、炭化珪素
繊維の形状を厚殻状、筒状、錐面状、平面状などの面構
造体に成形するとともに、炭化珪素繊維の太さおよび密
度を適切に設定し、かつセラミック接着剤を含浸させて
ＳｉＣ繊維を接着することにより、構造が単純で所望の
形状の燃焼面が形成でき、暖房用バーナ、調理用バー
ナ、ランタン、乾燥用の工業炉、食品焼成機などの多種
類の用途に適した表面燃焼バーナの提供にある。請求項
２に記載の発明の目的は、バーナエレメントの構造強度
を大きくできる表面燃焼バーナの提供にある。[0004] An object of the invention described in claim 1 is to form a silicon carbide fiber into a planar structure such as a thick shell, a cylinder, a cone, a plane, etc., as well as the thickness and the thickness of the silicon carbide fiber. By appropriately setting the density and impregnating the ceramic adhesive to bond the SiC fibers, a combustion surface having a simple structure and a desired shape can be formed, and a heating burner, a cooking burner, a lantern, and a drying burner can be formed. An object of the present invention is to provide a surface combustion burner suitable for various kinds of uses such as an industrial furnace and a food baking machine. A second object of the present invention is to provide a surface combustion burner capable of increasing the structural strength of a burner element.
【０００５】[0005]
【課題を解決するための手段】請求項１に記載の表面燃
焼バーナは、９〜２５μｍの太さのＳｉＣ繊維を用い、
ＳｉＣ繊維の密度を２．０〜３．０ｇ／ｃｍ3 とし、金
属アルコキシド系のセラミック接着剤、またはアルミナ
ゾル及びシリカゾル又はこれらの混合物からなるセラミ
ック接着剤を含浸させてＳｉＣ繊維を接着させて形成し
た厚さが２．０〜７．０ｍｍの炭化珪素繊維製面構造体
をバーナエレメントとした。請求項２に記載の表面燃焼
バーナは、面構造体が耐熱金属製または耐熱ガラスを含
む耐熱セラミック製の補強骨体を有することを特徴とす
る。According to a first aspect of the present invention, there is provided a surface burning burner using a SiC fiber having a thickness of 9 to 25 μm.
The density of the SiC fiber was 2.0 to 3.0 g / cm 3, and the SiC fiber was bonded by impregnating with a metal alkoxide-based ceramic adhesive or a ceramic adhesive composed of alumina sol and silica sol or a mixture thereof. A silicon carbide fiber surface structure having a thickness of 2.0 to 7.0 mm was used as a burner element. The surface combustion burner according to claim 2 is characterized in that the surface structure has a reinforcing skeleton made of a heat-resistant metal or a heat-resistant ceramic containing heat-resistant glass.
【０００６】[0006]
【発明の作用および効果】請求項１に記載の発明では、
最適の炭化珪素（ＳｉＣ）繊維の太さ、密度および厚さ
を有し、且つセラミック接着剤を含浸させてＳｉＣ繊維
を接着させて形成した面構造体でバーナエレメントを形
成している。このため、簡単な構造で所望の形状の燃焼
面を有する加圧式の表面燃焼バーナを容易に構成できる
とともに、バーナエレメント表面の赤熱が迅速にでき、
かつ耐久性に優れる。請求項２の発明では、炭化珪素繊
維面構造体の機械的構造強度が増大でき、耐久性がさら
に向上できる。According to the first aspect of the present invention,
The burner element is formed of a surface structure having an optimum thickness, density, and thickness of silicon carbide (SiC) fiber and formed by impregnating a ceramic adhesive and bonding the SiC fiber. For this reason, a pressurized surface combustion burner having a combustion surface of a desired shape with a simple structure can be easily configured, and the surface of the burner element can quickly glow red,
And it has excellent durability. According to the second aspect of the invention, the mechanical structural strength of the silicon carbide fiber surface structure can be increased, and the durability can be further improved.
【０００７】[0007]
【実施例】図１はこの発明の第１実施例にかかる表面燃
焼バーナ１００を示し、図示しないブロワなどの強制給
気手段による加圧式の全一次空気予混合燃焼を行う。こ
の実施例の表面燃焼バーナ１００は、上端に円筒開口１
１を有するバーナボディ１に、バーナエレメント２を嵌
め込んでなる。バーナエレメント２は、下端が開口した
厚肉の放物殻状を呈する燃焼面部２１と、該燃焼面部２
１の下端に周設された鍔部２２とからなり、円筒開口１
１の内周に形成した周溝１２に鍔部２２を嵌め込んで取
り付けられている。この構成により、部品数が少なく組
み付けが容易にできる利点がある。FIG. 1 shows a surface combustion burner 100 according to a first embodiment of the present invention, in which pressurized all primary air premixed combustion is performed by a forced air supply means such as a blower (not shown). The surface combustion burner 100 of this embodiment has a cylindrical opening 1 at the upper end.
A burner element 2 is fitted into a burner body 1 having a burner element 1. The burner element 2 has a combustion surface portion 21 having a thick parabolic shell shape with an open lower end, and the combustion surface portion 2.
And a flange 22 provided at the lower end of the cylindrical opening 1.
The flange 22 is fitted into the circumferential groove 12 formed on the inner periphery of the first bracket 1 and attached thereto. With this configuration, there is an advantage that the number of parts is small and assembly can be easily performed.
【０００８】バーナエレメント２は、９〜２５μｍの太
さのＳｉＣ繊維を用い、ＳｉＣ繊維の密度を２．０〜
３．０ｇ／ｃｍ3 とし、厚さは２．０〜７．０ｍｍに成
形する。この成形は、金網の型にＳｉＣ繊維を接着剤と
ともに、吹付または吸引させて層成させる製法、ＳｉＣ
繊維のマット状ブロックから削り出す製法、またはＳｉ
Ｃ繊維シートをプレス成形する製法などによりなされ
る。なお、バーナエレメント２の形状は、球殻、円錐
台、円錐、放物殻など用途に応じて他の所望の形状が選
択できる。[0008] The burner element 2 uses SiC fibers having a thickness of 9 to 25 µm, and has a density of 2.0 to 25 µm.
The thickness is set to 3.0 g / cm 3 and the thickness is formed to 2.0 to 7.0 mm. This molding is performed by spraying or sucking SiC fibers together with an adhesive on a wire mesh mold to form a layer.
Manufacturing method to cut from mat-like block of fiber, or Si
It is performed by a method of press-molding a C fiber sheet. The shape of the burner element 2 can be any other desired shape such as a spherical shell, a truncated cone, a cone, or a parabolic shell depending on the application.
【０００９】バーナエレメント２は、金属アルコキシド
系のセラミック接着剤、またはアルミナゾル及びシリカ
ゾル又はこれらの混合物からなるセラミック接着剤を含
浸させてＳｉＣ繊維を接着させて形成されている。これ
らの接着剤を用いる理由は、耐熱性および冷熱の繰り返
しに対する耐久性に優れ、接着強度の確保が得られると
ともに、容易に希釈液で希釈できるためバーナエレメン
ト２への吹付による含浸が容易であることによる。たと
えばアルミナゾルの場合は５％以下に希釈してバーナエ
レメントに噴霧するとＳｉＣ繊維相互の接触点に水滴状
となって集まりＳｉＣ繊維相互を接着する。The burner element 2 is formed by impregnating a metal alkoxide-based ceramic adhesive or a ceramic adhesive composed of alumina sol and silica sol or a mixture thereof to adhere SiC fibers. The reason for using these adhesives is that they are excellent in heat resistance and durability against repetition of cold and heat, secure the adhesive strength, and can be easily diluted with a diluting liquid, so that impregnation by spraying onto the burner element 2 is easy. It depends. For example, in the case of alumina sol, when it is diluted to 5% or less and sprayed onto the burner element, water droplets gather at the contact points between the SiC fibers and adhere to each other.
【００１０】ＳｉＣ繊維およびバーナエレメント２の寸
法限定は以下の理由による。ＳｉＣ繊維の太さは、９μ
ｍより細いと炭化珪素繊維面構造体の強度が弱く、取扱
が困難となり、２５μｍより太いと比熱が大きくなり、
燃焼時に赤熱状態が得られ難い。また、繊維の密度は、
２．０ｇ／ｃｍ3 以下であると強度が弱く耐久性が不充
分であり、３．０ｇ／ｃｍ3 以上であると強度は強いが
燃焼ガスの通過抵抗が大きくなり燃焼状態が悪くなる。
さらに、厚さは、２．０ｍｍ以下だと強度が弱く耐久性
が不充分であり、７．０ｍｍ以上であると強度は強いが
燃焼ガスの通過抵抗が大きくなり燃焼状態が悪くなる。The size limitation of the SiC fiber and the burner element 2 is based on the following reasons. The thickness of the SiC fiber is 9μ
If the thickness is smaller than m, the strength of the silicon carbide fiber surface structure is weak, and handling becomes difficult. If the thickness is larger than 25 μm, the specific heat increases.
It is difficult to obtain a red-hot state during combustion. The density of the fiber is
If it is 2.0 g / cm 3 or less, the strength is weak and the durability is insufficient. If it is 3.0 g / cm 3 or more, the strength is strong but the passage resistance of the combustion gas becomes large and the combustion state deteriorates.
Further, when the thickness is 2.0 mm or less, the strength is weak and the durability is insufficient. When the thickness is 7.0 mm or more, the strength is strong but the passage resistance of the combustion gas is increased, and the combustion state is deteriorated.
【００１１】この表面燃焼バーナ１００では、空気過剰
率λ＝１．１〜１．５の全一次予混合気がバーナボディ
１に供給され、図示しない点火装置で点火されて着火す
る。燃焼はバーナエレメント２の外面付近でなされ、Ｓ
ｉＣ繊維は加熱されて赤熱する。この燃焼において、Ｓ
ｉＣ繊維は、熱伝導度が大きく比熱が小さいという特性
と、形態がファイバー状であるために熱容量が小さく、
かつ比表面積が大きいという特性との相乗効果により、
燃焼面の赤熱時間の短縮が可能となる。また、高温とな
る燃焼面がＳｉＣ繊維であるため、空気中の窒素と酸素
を結合させ窒素酸化物を生成させる、いわゆる触媒作用
が小さい。このため、窒素酸化物の発生の少ない低ＮＯ
X 燃焼が得られる。In the surface combustion burner 100, all the primary premixed air having an excess air ratio λ = 1.1 to 1.5 is supplied to the burner body 1 and ignited by an ignition device (not shown) to ignite. The combustion takes place near the outer surface of the burner element 2 and S
The iC fibers are heated and glow red. In this combustion, S
iC fibers have high thermal conductivity and low specific heat, and have a small heat capacity due to their fibrous form.
And by the synergistic effect with the characteristic that the specific surface area is large,
It is possible to shorten the red heat time of the combustion surface. In addition, since the combustion surface that is heated to high temperature is made of SiC fibers, the so-called catalytic action of combining nitrogen and oxygen in the air to generate nitrogen oxides is small. Therefore, low NO with less generation of nitrogen oxides
X combustion is obtained.
【００１２】図２は第２実施例を示す。この実施例で
は、バーナボディ３は円筒面状の開口３１を有し、この
開口３１に円筒状のバーナエレメント４を装着してい
る。なお、開口３１およびバーナエレメント４は、角柱
状、提灯状、鼓状などであってもよい。FIG. 2 shows a second embodiment. In this embodiment, the burner body 3 has a cylindrical opening 31 in which a cylindrical burner element 4 is mounted. The opening 31 and the burner element 4 may have a prismatic shape, a lantern shape, a drum shape, or the like.
【００１３】図３は第３実施例を示す。この実施例で
は、第１実施例におけるバーナエレメント２の内壁また
は壁内（図では内壁）に耐熱金属網５を補強骨体として
配している。図４は第４実施例を示す。この実施例で
は、第２実施例におけるバーナエレメント４の内壁また
は壁内（図では内壁）に耐熱金属網６を補強骨体として
配している。これらの実施例では、耐熱金属網５または
６によりバーナエレメントの構造強度が大きくなり、耐
久性が向上できる。なお、補強骨体は、格子状、その他
の構造であってもよく、材質は耐熱セラミック製であっ
てもよい。FIG. 3 shows a third embodiment. In this embodiment, a heat-resistant metal net 5 is provided as a reinforcing frame on the inner wall or inside the wall (in the drawing, the inner wall) of the burner element 2 in the first embodiment. FIG. 4 shows a fourth embodiment. In this embodiment, a heat-resistant metal net 6 is arranged as a reinforcing frame on the inner wall or inside the wall (in the drawing, the inner wall) of the burner element 4 in the second embodiment. In these embodiments, the structural strength of the burner element is increased by the heat-resistant metal net 5 or 6, and the durability can be improved. The reinforcing skeleton may have a lattice shape or another structure, and may be made of a heat-resistant ceramic.
【図１】第１実施例の表面燃焼バーナの断面図である。FIG. 1 is a sectional view of a surface combustion burner according to a first embodiment.
【図２】第２実施例の表面燃焼バーナの断面図である。FIG. 2 is a sectional view of a surface combustion burner according to a second embodiment.
【図３】第３実施例の表面燃焼バーナの断面図である。FIG. 3 is a sectional view of a surface combustion burner according to a third embodiment.
【図４】第４実施例の表面燃焼バーナの断面図である。FIG. 4 is a sectional view of a surface combustion burner according to a fourth embodiment.
１ バーナボディ ２ バーナエレメント ３ バーナボディ ４ バーナエレメント １００ 表面燃焼バーナ DESCRIPTION OF SYMBOLS 1 Burner body 2 Burner element 3 Burner body 4 Burner element 100 Surface burner
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−134248（ＪＰ，Ａ) 実開 昭61−149617（ＪＰ，Ｕ) 特公 昭48−8651（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) F23D 14/14 - 14/18 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-134248 (JP, A) JP-A-61-149617 (JP, U) JP-B-48-8651 (JP, B1) (58) Field (Int.Cl. 7 , DB name) F23D 14/14-14/18
Claims (2)
い、ＳｉＣ繊維の密度を２．０〜３．０ｇ／ｃｍ3 と
し、金属アルコキシド系のセラミック接着剤、またはア
ルミナゾル及びシリカゾル又はこれらの混合物からなる
セラミック接着剤を含浸させてＳｉＣ繊維を接着させて
形成した厚さが２．０〜７．０ｍｍの炭化珪素繊維製面
構造体をバーナエレメントとした表面燃焼バーナ。1. An SiC fiber having a thickness of 9 to 25 μm, a density of the SiC fiber being 2.0 to 3.0 g / cm 3 , and a metal alkoxide-based ceramic adhesive or
Consists of luminasol and silica sol or a mixture thereof
Impregnated with ceramic adhesive and bonded SiC fiber
A surface combustion burner using a formed surface structure made of silicon carbide fibers having a thickness of 2.0 to 7.0 mm as a burner element.
熱金属製または耐熱セラミック製の補強骨体を有するこ
とを特徴とする表面燃焼バーナ。2. The surface combustion burner according to claim 1, wherein the surface structure has a reinforcing frame made of a heat-resistant metal or a heat-resistant ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06162175A JP3098381B2 (en) | 1994-07-14 | 1994-07-14 | Surface burning burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06162175A JP3098381B2 (en) | 1994-07-14 | 1994-07-14 | Surface burning burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0828824A JPH0828824A (en) | 1996-02-02 |
| JP3098381B2 true JP3098381B2 (en) | 2000-10-16 |
Family
ID=15749446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06162175A Expired - Lifetime JP3098381B2 (en) | 1994-07-14 | 1994-07-14 | Surface burning burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3098381B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06331054A (en) * | 1993-05-06 | 1994-11-29 | Carl Freudenberg:Fa | Electromagnetically operable type valve |
| WO2019193025A1 (en) * | 2018-04-05 | 2019-10-10 | Bekaert Combustion Technology B.V. | Conical premix gas burner |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1010845A3 (en) * | 1997-01-10 | 1999-02-02 | Bekaert Sa Nv | Conical surface burner. |
-
1994
- 1994-07-14 JP JP06162175A patent/JP3098381B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06331054A (en) * | 1993-05-06 | 1994-11-29 | Carl Freudenberg:Fa | Electromagnetically operable type valve |
| WO2019193025A1 (en) * | 2018-04-05 | 2019-10-10 | Bekaert Combustion Technology B.V. | Conical premix gas burner |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0828824A (en) | 1996-02-02 |
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