JP2977449B2 - Surface burner - Google Patents
Surface burnerInfo
- Publication number
- JP2977449B2 JP2977449B2 JP6169776A JP16977694A JP2977449B2 JP 2977449 B2 JP2977449 B2 JP 2977449B2 JP 6169776 A JP6169776 A JP 6169776A JP 16977694 A JP16977694 A JP 16977694A JP 2977449 B2 JP2977449 B2 JP 2977449B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- silicon carbide
- fiber paper
- carbide fiber
- ceramic plate
- 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 - Fee Related
Links
- 238000002485 combustion reaction Methods 0.000 claims description 37
- 239000000835 fiber Substances 0.000 claims description 35
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 28
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 28
- 239000000919 ceramic Substances 0.000 claims description 20
- 239000003779 heat-resistant material Substances 0.000 claims description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 239000000567 combustion gas Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 102220488234 Uromodulin-like 1_F23D_mutation Human genes 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Gas Burners (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ブロワなどの給気手段
で燃焼用空気を供給する全一次燃焼、または大気圧によ
り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 in which combustion air is supplied by an air supply means such as a blower, or for performing all primary combustion at atmospheric pressure.
【０００２】[0002]
【従来の技術】セラミック繊維の綿で燃焼面を形成し、
ブロワで強制給気して加圧状態で全一次燃焼させ、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５６−５６５１４号公報、特開昭５７−４７
１２０号公報など）。2. Description of the Related Art A combustion surface is formed of ceramic fiber cotton,
Various surface burning burners have been proposed for use in applications such as heating and cooking by forcibly supplying air and performing all primary combustion in a pressurized state with a blower (for example, JP-A-56-59116 and JP-A-56-59116). -56514, JP-A-57-47
No. 120 publication).
【０００３】[0003]
【発明が解決しようとする課題】この種の表面燃焼バー
ナでは、燃焼面を形成しているセラミック繊維を細くし
ないと赤熱までに時間がかかり応答性が低下する。この
ため、極めて細いセラミック繊維が用いられるので機械
的強度が小さく、赤熱時に繊維が千切れて火の粉となっ
て消耗し易い。とくに強制給気燃焼させる加圧式バーナ
では、エジェクターで一次空気を吸引する常圧式バーナ
に比較し燃焼面の燃焼ガスが高流速になるため、セラミ
ック繊維の消耗が激しく耐久性が不充分である欠点があ
った。この発明の目的は、セラミック繊維の交換が容易
で長期間の使用が可能となるとともに、製造の容易な表
面燃焼バーナの提供にある。In this type of surface combustion burner, it takes a long time to glow red if the ceramic fibers forming the combustion surface are not thinned, and the response is reduced. For this reason, since extremely thin ceramic fibers are used, the mechanical strength is low, and the fibers are easily broken at the time of red heat to become sparks and easily consumed. In particular, in the case of a pressurized burner that performs forced supply combustion, the combustion gas on the combustion surface has a higher flow rate than a normal pressure burner that suctions primary air with an ejector, so the ceramic fibers are consumed extensively and the durability is insufficient. was there. An object of the present invention is to provide a surface combustion burner that allows easy replacement of ceramic fibers and enables long-term use, and is easy to manufacture.
【０００４】[0004]
【課題を解決するための手段】請求項１に記載の発明の
表面燃焼バーナは、多数の炎孔が設けられたセラミック
プレートの表面に、炭化珪素繊維ペーパーを前記炎孔を
覆うように載置し、該炭化珪素繊維ペーパーの表面を耐
熱材製多孔部材で覆って前記炭化珪素繊維ペーパーを前
記セラミックプレートに固定してなる。請求項２に記載
の表面燃焼バーナは、前記耐熱材製多孔部材の表面に、
押さえ枠を取り付け前記炭化珪素繊維ペーパーを前記セ
ラミックプレートの表面に固定したことを特徴とする。According to a first aspect of the present invention, there is provided a surface combustion burner, wherein silicon carbide fiber paper is placed on a surface of a ceramic plate provided with a large number of flame holes so as to cover the flame holes. Then, the surface of the silicon carbide fiber paper is covered with a porous member made of a heat-resistant material, and the silicon carbide fiber paper is fixed to the ceramic plate. The surface combustion burner according to claim 2, wherein the surface of the heat-resistant material porous member,
A holding frame is attached, and the silicon carbide fiber paper is fixed to the surface of the ceramic plate.
【０００５】[0005]
【発明の作用および効果】この発明では、炭化珪素繊維
ペーパーの固定および取り換えが簡単であり、表面燃焼
バーナの長期間の使用が可能になる。また、炭化珪素繊
維ペーパーによる燃焼部における低ＮＯX 燃焼ができる
とともに、衝撃等による破損防止が可能になる。According to the present invention, the fixing and replacement of the silicon carbide fiber paper are simple, and the surface burning burner can be used for a long time. Further, it is low NO X combustion in the combustor due to the silicon carbide fiber paper, it is possible to prevent damage due to impact or the like.
【０００６】[0006]
【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、図示しないエジェクターで燃焼
用空気が吸引され、常圧状態で全一次（予混合）燃焼を
行う。表面燃焼バーナ１００は、内周棚１１が設けられ
たバーナボディ１の上端に形成された矩形開口に矩形の
セラミックプレート２を嵌め込み、該セラミックプレー
ト２の上面を炭化珪素繊維ペーパー（不織布）３で覆
い、該炭化珪素繊維ペーパー３の上面に耐熱材製多孔部
材としてのステンレス網４を載せ、該ステンレス網４の
上面を押さえ枠５で固定してなる。FIG. 1 shows a surface combustion burner 100 according to a first embodiment of the present invention. Combustion air is sucked by an ejector (not shown), and all primary (premix) combustion is performed at normal pressure. The surface combustion burner 100 has a rectangular ceramic plate 2 fitted into a rectangular opening formed at the upper end of a burner body 1 provided with an inner peripheral shelf 11, and the upper surface of the ceramic plate 2 is covered with silicon carbide fiber paper (nonwoven fabric) 3. A stainless steel net 4 as a heat-resistant material porous member is placed on the upper surface of the silicon carbide fiber paper 3, and the upper surface of the stainless steel net 4 is fixed by a holding frame 5.
【０００７】セラミックプレート２は、多数の炎孔２１
が所定のパターンで分散して形成され、炭化珪素繊維ペ
ーパー３は炎孔２１を所定の通気抵抗で塞いでいる。炎
孔２１の断面形状は、多角形、十字形、長円など他の所
望の形状が採用でき、また炎孔２１はスリットであって
もよい。炭化珪素繊維ペーパー３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０．１〜０．８ｍｍに成
形する。The ceramic plate 2 has a large number of flame holes 21.
Are formed in a predetermined pattern, and the silicon carbide fiber paper 3 closes the flame holes 21 with a predetermined airflow resistance. The cross-sectional shape of the flame hole 21 can adopt other desired shapes such as a polygon, a cross, and an ellipse, and the flame hole 21 may be a slit. Silicon carbide fiber paper 3 uses SiC fibers having a thickness of 9 to 25 μm, and has a density of SiC fibers of 2.0 to 25 μm.
The thickness is set to 3.0 g / cm 3 and the thickness is formed to 0.1 to 0.8 mm.
【０００８】炭化珪素繊維ペーパー３の寸法限定は以下
の理由による。ＳｉＣ繊維の太さは、９μｍより細いと
炭化珪素繊維ペーパー３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、０．１ｍｍ以下だと強度が弱く耐久性が不充分で
あり、０．８ｍｍ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 silicon carbide fiber paper 3 is based on the following reasons. If the thickness of the SiC fiber is thinner than 9 μm, the strength of the silicon carbide fiber paper 3 is weak and handling becomes difficult. The fiber density is 2.0 g /
If it is less than cm 3 , 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 increases, and the combustion state deteriorates. Further, when the thickness is 0.1 mm or less, the strength is weak and the durability is insufficient, and when the thickness is 0.8 mm or more, the strength is strong but the passage resistance of the combustion gas increases and the combustion state deteriorates.
【０００９】耐熱材製多孔部材としては、ステンレス網
４の他に、他の金属製の網、格子、多孔板であっても良
く、また、材質は耐熱ニッケル合金製、またはセラミッ
ク製など他の耐熱材料であってもよい。押さえ枠５は、
ステンレス網４の周辺部を押さえる枠部５１と、該枠部
５１内に設けられた格子部５２と、前記枠部５１の外周
から下方に延設された縁部５３とからなる。As the porous member made of a heat-resistant material, in addition to the stainless steel net 4, a metal net, a lattice, or a perforated plate may be used. It may be a heat-resistant material. The holding frame 5
The frame 51 includes a frame 51 for holding the periphery of the stainless steel net 4, a grid 52 provided in the frame 51, and an edge 53 extending downward from the outer periphery of the frame 51.
【００１０】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とを構成する炭化珪素繊維
ペーパー３の上面付近でなされ、炭化珪素繊維ペーパー
３の上面付近のＳｉＣ繊維は加熱されて赤熱する。この
燃焼において、ＳｉＣ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。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 is ignited by an ignition device (not shown) and ignited. The combustion is performed near the upper surface of the silicon carbide fiber paper 3 constituting the burner element, and the SiC fibers near the upper surface of the silicon carbide fiber paper 3 are heated and glow red. In this combustion, the SiC fiber has a characteristic that the thermal conductivity is large and the specific heat is small, and a characteristic that the heat capacity is small and the specific surface area is large because the form is a fibrous form. Can be shortened.
【００１１】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ＮＯX 燃焼が得られる。セラミッ
クプレート２の炎孔２１は、通常の大気圧燃焼の全一次
燃焼方式におけるセラミックプレートの炎孔より、炭化
珪素繊維ペーパー３の通気抵抗分だけ大きくして、噴出
速度を調整することが重要である。なお、大気圧燃焼の
全一次燃焼方式では、セラミックプレートの炎孔径は、
できるだけ大きく設定し、炭化珪素繊維ペーパー３の通
過抵抗をできるだけ少なくするように設定することが燃
焼の安定のために望ましい。Further, since the combustion surface which becomes high in temperature is made of SiC fibers, the so-called catalytic action of combining nitrogen and oxygen in the air to form nitrogen oxides is small. Therefore, little generation of nitrogen oxides low NO X combustion is obtained. It is important that the flame holes 21 of the ceramic plate 2 be larger than the flame holes of the ceramic plate in the normal primary-pressure combustion type by the ventilation resistance of the silicon carbide fiber paper 3 to adjust the ejection speed. is there. In addition, in the all-primary combustion method of atmospheric pressure combustion, the flame hole diameter of the ceramic plate,
It is desirable for the combustion stability to be set as large as possible and to set the passage resistance of the silicon carbide fiber paper 3 as small as possible.
【００１２】図２の（イ）および（ロ）は第２実施例に
かかる表面燃焼バーナ２００を示す。この実施例では、
図示しないブロワなどの強制給気手段により燃焼用空気
が供給され全一次燃焼を行う加圧式の表面燃焼バーナと
なっている。この実施例においても、セラミックプレー
ト２の炎孔２１は、通常の全一次燃焼方式におけるセラ
ミックプレートの炎孔より、炭化珪素繊維ペーパー３の
通気抵抗分だけ大きくして、噴出速度を適正範囲に調整
する。FIGS. 2A and 2B show a surface combustion burner 200 according to a second embodiment. In this example,
The combustion air is supplied by a forced air supply means such as a blower (not shown) to provide a pressurized surface combustion burner for performing all primary combustion. Also in this embodiment, the flame holes 21 of the ceramic plate 2 are made larger than the flame holes of the ceramic plate in the normal all-primary combustion system by the ventilation resistance of the silicon carbide fiber paper 3 to adjust the ejection speed to an appropriate range. I do.
【図１】第１実施例の表面燃焼バーナの断面図および平
面図である。FIG. 1 is a sectional view and a plan view of a surface combustion burner of a first embodiment.
【図２】第２実施例の表面燃焼バーナの断面図および平
面図である。FIG. 2 is a sectional view and a plan view of a surface combustion burner according to a second embodiment.
１００ 表面燃焼バーナ １ バーナボディ ２ セラミックプレート ２１ 炎孔 ３ 炭化珪素繊維ペーパー ４ ステンレス網（耐熱材製多孔部材） ５ 押さえ枠 REFERENCE SIGNS LIST 100 Surface burner 1 Burner body 2 Ceramic plate 21 Flame hole 3 Silicon carbide fiber paper 4 Stainless steel mesh (porous member made of heat resistant material) 5 Holding frame
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平８−28827（ＪＰ，Ａ) 特開 平８−28826（ＪＰ，Ａ) 実開 平２−133518（ＪＰ，Ｕ) 実開 昭59−153434（ＪＰ，Ｕ) 特公 昭44−16509（ＪＰ，Ｂ１) 特公 昭47−20543（ＪＰ，Ｂ１) 実公 昭44−13034（ＪＰ，Ｙ１) 実公 昭41−16154（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.6，ＤＢ名) F23D 14/14 F23D 14/16 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-28827 (JP, A) JP-A-8-28826 (JP, A) JP-A-2-133518 (JP, U) JP-A-59 153434 (JP, U) JP-B-44-16509 (JP, B1) JP-B-47-20543 (JP, B1) JP-B-44-13034 (JP, Y1) JP-B-41-16154 (JP, Y1) (58) Field surveyed (Int.Cl. 6 , DB name) F23D 14/14 F23D 14/16
Claims (2)
ートの表面に、炭化珪素繊維ペーパーを前記炎孔を覆う
ように載置し、該炭化珪素繊維ペーパーの表面を耐熱材
製多孔部材で覆って前記炭化珪素繊維ペーパーを前記セ
ラミックプレートに固定してなる表面燃焼バーナ。1. A silicon carbide fiber paper is placed on a surface of a ceramic plate provided with a large number of flame holes so as to cover the flame holes, and the surface of the silicon carbide fiber paper is covered with a heat-resistant porous member. A surface combustion burner comprising the silicon carbide fiber paper fixed to the ceramic plate.
材の表面に、押さえ枠を取り付け前記炭化珪素繊維ペー
パーを前記セラミックプレートの表面に固定したことを
特徴とする表面燃焼バーナ。2. The surface combustion burner according to claim 1, wherein a holding frame is attached to a surface of the porous member made of heat resistant material, and the silicon carbide fiber paper is fixed to a surface of the ceramic plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6169776A JP2977449B2 (en) | 1994-07-21 | 1994-07-21 | Surface burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6169776A JP2977449B2 (en) | 1994-07-21 | 1994-07-21 | Surface burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0835621A JPH0835621A (en) | 1996-02-06 |
| JP2977449B2 true JP2977449B2 (en) | 1999-11-15 |
Family
ID=15892656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6169776A Expired - Fee Related JP2977449B2 (en) | 1994-07-21 | 1994-07-21 | Surface burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2977449B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10281173B2 (en) | 2012-06-28 | 2019-05-07 | Purpose Co., Ltd. | Burner, combustion apparatus, method for combustion, method for controlling combustion, recording medium, and water heater |
| JP6013044B2 (en) * | 2012-06-28 | 2016-10-25 | パーパス株式会社 | Burner, hot water supply apparatus burner combustion method and hot water supply apparatus |
| JP2019013775A (en) * | 2018-09-12 | 2019-01-31 | 株式会社中西製作所 | Continuous rice cooking device |
| JP7181120B2 (en) * | 2019-02-25 | 2022-11-30 | リンナイ株式会社 | Full primary combustion burner |
-
1994
- 1994-07-21 JP JP6169776A patent/JP2977449B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0835621A (en) | 1996-02-06 |
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