JPH03207905A - Burning equipment - Google Patents
Burning equipmentInfo
- Publication number
- JPH03207905A JPH03207905A JP396490A JP396490A JPH03207905A JP H03207905 A JPH03207905 A JP H03207905A JP 396490 A JP396490 A JP 396490A JP 396490 A JP396490 A JP 396490A JP H03207905 A JPH03207905 A JP H03207905A
- Authority
- JP
- Japan
- Prior art keywords
- burner head
- burning
- combustion
- alumina
- resistance
- 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 claims abstract description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000446 fuel Substances 0.000 claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 238000002309 gasification Methods 0.000 abstract description 2
- 238000009499 grossing Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000006200 vaporizer Substances 0.000 description 14
- 230000035939 shock Effects 0.000 description 11
- 238000011084 recovery Methods 0.000 description 7
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- HEHRHMRHPUNLIR-UHFFFAOYSA-N aluminum;hydroxy-[hydroxy(oxo)silyl]oxy-oxosilane;lithium Chemical group [Li].[Al].O[Si](=O)O[Si](O)=O.O[Si](=O)O[Si](O)=O HEHRHMRHPUNLIR-UHFFFAOYSA-N 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052670 petalite Inorganic materials 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 229910001141 Ductile iron Inorganic materials 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Landscapes
- Gas Burners (AREA)
- Spray-Type Burners (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
この発明は気化器で気化された液体燃料又はガス燃料と
空気とを混合させ、これをバーナヘッドから噴出して燃
焼させる燃焼装置に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a combustion device that mixes air with liquid fuel or gaseous fuel vaporized in a vaporizer, and injects the mixture from a burner head to combust it.
（口）従来の技術
従来、気化式の液体燃料燃焼装置では、例えば、実公平
１−１３２１５号公報に開示されているように、気化器
に環状の熱回収部を設け、この熱回収部の内側にバーナ
ヘッドを設けることにより、燃焼熱を熱回収部を介して
気化器に伝え、液体燃料の気化に利用できるようにして
いる。(Example) Conventional technology Conventionally, in a vaporization type liquid fuel combustion apparatus, as disclosed in Utility Model Publication No. 1-13215, for example, an annular heat recovery section is provided in the vaporizer. By providing a burner head inside, the combustion heat is transmitted to the vaporizer via the heat recovery section so that it can be used for vaporizing the liquid fuel.
〈ハ〉発明が解決しようとする課題
ところで、バーナヘッドは加工性の良い普通鋳鉄（ねず
み鋳鉄）や球状黒鉛鋳鉄等の鋳鉄材料で作られている．
しかしながら、普通鋳鉄の耐熱温度が５００℃以下、ま
た、球状黒鉛鋳鉄の耐熱温度が６００℃以下であるのに
対し、燃焼量を絞り、接炎燃焼させた場合にはバーナヘ
ッドの実使用温度が約８００℃になるため、バーナヘッ
ドが高温酸化によって徐々に劣化し、バーナヘッドの炎
口が変形したり、目詰まりを起こし、燃焼が不安定にな
る問題があった。もちろん、バーナヘッドを耐熱性の良
いセラミックスで作ることも考えられるが、一般に使用
されているセラミックス辻耐熱衝撃性が悪く、上述した
使用条件下でのヒートサイクルによって割れを生じる欠
点があった。<C> Problems to be solved by the invention By the way, burner heads are made of cast iron materials such as ordinary cast iron (gray cast iron) and spheroidal graphite cast iron, which have good workability.
However, while the heat resistance temperature of ordinary cast iron is 500℃ or less, and the heat resistance temperature of spheroidal graphite cast iron is 600℃ or less, when the combustion amount is reduced and flame combustion is performed, the actual operating temperature of the burner head is Since the temperature is approximately 800°C, the burner head gradually deteriorates due to high-temperature oxidation, causing deformation and clogging of the flame port of the burner head, resulting in unstable combustion. Of course, it is possible to make the burner head from ceramics with good heat resistance, but the commonly used ceramics have poor thermal shock resistance and have the disadvantage of cracking due to heat cycles under the above-mentioned usage conditions.
この発明は上述した事実に鑑みてなされたものであり、
バーナヘッドの耐熱性及び耐熱衝撃性を向上し、燃焼幅
の拡大が図れるようにすることを目的とする。This invention was made in view of the above facts,
The purpose is to improve the heat resistance and thermal shock resistance of a burner head, and to expand the combustion width.
く二）課題を解決するための手段
この発明では、気化された液体燃料又はガス燃料と空気
とを混合させ、これをバーナヘッドから噴出して燃焼さ
せるものにおいて、バーナヘッドがリチウムアルミナシ
リカ系、若しくはマグネシウムアルミナシリカ系のセラ
ミックスで作られている構成である。2) Means for Solving the Problems In this invention, vaporized liquid fuel or gaseous fuel is mixed with air, and this is ejected from a burner head to burn the mixture, and the burner head is made of lithium alumina silica, lithium alumina silica, Alternatively, it is made of magnesium alumina silica ceramics.
（＊）作用
リチウムアルミナシリカ系、若しくはマグネシウムアル
ミナシリカ系のセラミックスは耐熱温度が高く、耐熱性
に優れているばかりでなく、熱膨張係数が小さく、ゼロ
に近いため、比熱衝撃抵抗性が大きく、耐熱衝撃性に優
れている。このため、燃焼量を絞り、接炎燃焼させる場
合でも、バーナヘッドがヒートサイクルによって割れる
心配がなく、燃焼幅の拡大が可能になる。(*) Lithium-alumina-silica-based or magnesium-alumina-silica-based ceramics not only have a high heat resistance and excellent heat resistance, but also have a small thermal expansion coefficient close to zero, so they have high specific thermal shock resistance. Excellent thermal shock resistance. Therefore, even when the combustion amount is reduced and flame contact combustion is performed, there is no fear that the burner head will crack due to the heat cycle, and the combustion width can be expanded.
（へ）実施例 以下、この発明を図面に示す実施例について説明する。(f) Example Hereinafter, embodiments of the present invention shown in the drawings will be described.
第１図ないし第４図において、（１）はバーナファン（
図示せず）によって圧送された空気が空気供給管（２）
を介して供給される送風ケース、〈３）は送風ケース〈
１〉の上に設けられた有底筒状の気化器であり、気化器
（３）の底部には一次空気流入口（４）が設けられてい
る。気化器（３）はヒーター（５）と温度検知素子（６
）とが取り付けられた気化器本体（３Ａ＞と気化器本体
（３Ａ）の先端から上方へ延びる環状の熱回収部（３Ｂ
）とで構成されており、熱回収部〈３Ａ）の上半部には
断面逆Ｌ字形の保護リング（７）が内嵌めされている。In Figures 1 to 4, (1) is a burner fan (
The air pumped by the air supply pipe (2) (not shown)
The ventilation case supplied via the ventilation case, <3) is the ventilation case <
This is a cylindrical vaporizer with a bottom provided above the vaporizer (3), and a primary air inlet (4) is provided at the bottom of the vaporizer (3). The vaporizer (3) is equipped with a heater (5) and a temperature detection element (6).
) is attached to the vaporizer main body (3A>) and an annular heat recovery section (3B) extending upward from the tip of the vaporizer main body (3A).
), and a protection ring (7) having an inverted L-shaped cross section is fitted into the upper half of the heat recovery part (3A).
この保護リング（７）は高耐熱性ステンレス（ＦＣＨ）
等の耐熱性及び熱伝導性に優れた材料で作られている。This protective ring (7) is made of high heat resistant stainless steel (FCH)
Made of materials with excellent heat resistance and thermal conductivity.
また、複数の爪片（７Ａ．）を有し、この爪片〈７Ａ）
を折り曲げることによって抜け止めされている。（８）
は放射状に配列された多数の炎口（９）を有するバーナ
ヘッドであり、気化器本体（３Ａ）上部の内向きの突起
（１０）上に載置されるとともに、熱回収部（３Ｂ）の
内側に設けられている。（１ｌ）は一次空気流入口｛４
｝を通して気化器本体〈３Ａ）内に挿入されたロータリ
ーコーン、〈１２）はロータリーコーン（１１）駆動用
のモータ、（１３〉はロータリーコーン（１１）と同軸
にして気化器本体（３Ａ）内に設けられた攪拌羽根、（
１４）は燃料吐出口をロータリーコーン（１１）の近く
に臨ませた燃料供給管、＜１５）は気化器本体（３Ａ）
内の上部に取り付けられた整流板、＜１６〉は送風ケー
ス（１）と気化器（３〉の間に介在させた断熱材、（１
７）は気化器本体の外周を囲むバーナケース、〈１８）
はバーナケース〈１７）の上に設けられた燃焼筒、（１
９〉はバーナケース（１７）と燃焼筒＜１８〉との間に
介在させた耐火材、（２０）は燃焼筒（１８）の下部に
接続された二次空気供給管、（２１）は燃焼筒〈１８）
とともに蓄気室く２２〉を形或する区画板であり、多数
の空気孔（２３）を有している。尚、（２４）は点火プ
ラグ、（２５）＋１フレームロッドである。Moreover, it has a plurality of claw pieces (7A.), and this claw piece <7A.
It is prevented from falling out by bending it. (8)
is a burner head having a large number of flame ports (9) arranged radially, and is placed on the inward protrusion (10) on the upper part of the vaporizer main body (3A), and is located on the heat recovery part (3B). It is located inside. (1l) is the primary air inlet {4
}, the rotary cone is inserted into the carburetor main body (3A), the motor (12) is for driving the rotary cone (11), and the rotary cone (13) is inserted coaxially with the rotary cone (11) into the carburetor main body (3A). The stirring blade installed in (
14) is the fuel supply pipe with the fuel discharge port facing near the rotary cone (11), <15) is the carburetor main body (3A)
The rectifying plate <16> attached to the upper part of the inside is the heat insulating material interposed between the blower case (1) and the vaporizer (3>).
7) is the burner case surrounding the outer periphery of the carburetor body, <18)
is the combustion tube installed on the burner case (17), (1
9> is the refractory material interposed between the burner case (17) and the combustion tube <18>, (20) is the secondary air supply pipe connected to the lower part of the combustion tube (18), and (21) is the combustion tube. Tube〈18)
It is a partition plate that together forms an air storage chamber (22) and has a large number of air holes (23). In addition, (24) is a spark plug, and (25) +1 flame rod.
燃料供給管（１４）からロータリーコーン（１１〉に灯
油等の液体燃料を噴出させると、液体燃料はロータリー
コーン（１１）の回転に伴う遠心力により霧状となって
飛散し、予めヒーター（５）によって加熱された気化器
本体（３Ａ）の内壁に当って気化する。When liquid fuel such as kerosene is ejected from the fuel supply pipe (14) to the rotary cone (11), the liquid fuel is dispersed in the form of mist due to the centrifugal force accompanying the rotation of the rotary cone (11), and ) and vaporizes when it hits the inner wall of the vaporizer body (3A) heated by the vaporizer body (3A).
そして、気化燃料は一次空気流入口（４）を通って流入
する送風ケース（１）内の空気と攪拌羽根｛１３｝によ
って混合され、これらの混合気体は整流板（１５）によ
って均一に分散されながらバーナヘッド（８）内に入り
、炎口（９〉から噴出して点火ブラグ（２４〉で着火さ
れ、ガス化燃焼する。燃焼中は燃焼熱が保護リング＜７
〉及び熱回収部（３Ｂ）を介して気化器本体（３Ａ〉に
伝達されるため、ヒーター（５）への通電を停止させる
ことができる。Then, the vaporized fuel is mixed with the air in the blower case (1) that flows in through the primary air inlet (4) by the stirring blade {13}, and this mixed gas is uniformly dispersed by the baffle plate (15). The combustion heat enters the burner head (8), ejects from the flame port (9), is ignited by the ignition plug (24), and is gasified and combusted.During combustion, the combustion heat passes through the protective ring (7).
Since the heat is transmitted to the vaporizer main body (3A) via the heat recovery section (3B) and the heat recovery section (3B), the power supply to the heater (5) can be stopped.
本実施例装置において、バーナヘッド（８）はりｆ ウ
ム７ノレミナシ’） 力＜Ｌｚ＊Ｏ ＡＱ ｔｏｎ
ＳｉＯ＊）系のセラミックスであるペタライト（Ｌｉ
ｔｏ − Ａ ｆｆｉ ｔｏｎ − ８５ｉＯ＊）で作
られている。ベタライトは耐熱温度が８００℃以上と高
く、耐熱性に優れているばかりでなく、下表に示すよう
に、２０℃〜１０００℃の広範囲で熱膨張係数がＩＯＸ
ＩＯ−’と小さく、耐熱衝撃性に優れている。すなわち
、セラミ・７クスは第４５０に示すように熱膨張係数が
Ｏに近づく程、比熱衝撃抵抗性が大きくなり、耐熱衝撃
性が良好になるので、ベタライトで作られたパーナヘッ
ド（８）は燃焼量が絞られ、接炎燃焼させた場合のよう
に常温から約８００℃までのヒートサイクルを受ける使
用条件下でも、熱衝撃に起因して割れる心配がない。こ
のため、燃焼幅を拡大しつつ、長期に亘って安定した燃
焼を行うことができる。In the device of this embodiment, the burner head (8) beam is
Petalite (SiO*) based ceramics
85iO*). Betalite has a high heat resistance temperature of 800℃ or higher, and not only has excellent heat resistance, but also has a thermal expansion coefficient of IOX over a wide range of 20℃ to 1000℃, as shown in the table below.
It is as small as IO-' and has excellent thermal shock resistance. In other words, as shown in No. 450, the closer the coefficient of thermal expansion of ceramic 7x is to O, the greater the specific thermal shock resistance becomes, and the better the thermal shock resistance becomes. There is no risk of cracking due to thermal shock, even under usage conditions where the amount is reduced and subjected to heat cycles from room temperature to approximately 800°C, such as when flame combustion is carried out. Therefore, stable combustion can be performed over a long period of time while expanding the combustion width.
表
尚、上表及び第４図からも明らかなように、リチウムア
ルミナシリカ系、若しくはマグネシウムアルミナシリカ
（ＭｇＯ− Ａ ｌ ＊Ｏｓ − ｓｉｏｔ ）系のセ
ラミックスは熱膨張係数が小さ＜（０に近い）、耐熱衝
撃性に優れているので、ペタライトの他にこれらのセラ
ミックスでバーナヘッド（８〉を作るようにしても良い
が、ペタライトはプレス加工等の成形が容易であり、安
価に入手可能である点で、特にバーナヘッド（８）に適
した材料である。As is clear from the above table and Figure 4, lithium alumina silica-based or magnesium alumina silica (MgO-Al*Os-siot) based ceramics have a small coefficient of thermal expansion (close to 0). Since it has excellent thermal shock resistance, the burner head (8) may be made of these ceramics in addition to petalite, but petalite is easy to mold by pressing etc. and is available at low cost. In this respect, it is a material particularly suitable for the burner head (8).
（ト〉発明の効果
この発明は以上のように構成されているので、バーナヘ
ッドを耐熱衝撃性に優れたセラミックス製としてその耐
熱性を高めつつ、ヒートサイクルによる割れを防止する
ことができ、接炎燃焼を行わせ、燃焼幅の拡大を図るこ
とができるばかりでなく、長期に亘って安定したガス化
燃焼又はガス燃焼が期待できるものである。(G) Effects of the Invention Since the present invention is constructed as described above, the burner head is made of ceramics with excellent thermal shock resistance, which increases its heat resistance, prevents cracking due to heat cycles, and improves the connection. Not only can flame combustion be performed to expand the combustion width, but also stable gasification combustion or gas combustion can be expected over a long period of time.
第１図妊この発明の一実施例を示す液体燃料燃焼装置の
断面図、第２図はバーナヘッドの平面図、第３図は第２
図のＢ−Ｂ’線断面図、第４図はセラミックスの熱膨張
係数と熱衝撃抵抗性との関係を示す説明図である。
（３）・・・気化器、
（８）・・・バーナヘツ
ド。Fig. 1 is a sectional view of a liquid fuel combustion device showing an embodiment of the present invention, Fig. 2 is a plan view of a burner head, and Fig. 3 is a sectional view of a liquid fuel combustion device showing an embodiment of the present invention.
4 is an explanatory diagram showing the relationship between the coefficient of thermal expansion and thermal shock resistance of ceramics. (3)...Carburizer, (8)...Burner head.
Claims (1)
させ、これをバーナヘッドから噴出して燃焼させるもの
において、バーナヘッドがリチウムアルミナシリカ系、
若しくはマグネシウムアルミナシリカ系のセラミックス
で作られていることを特徴とする燃焼装置。(1) In a device that mixes vaporized liquid fuel or gas fuel with air and ejects it from a burner head to burn it, the burner head is lithium alumina silica-based,
Or a combustion device characterized by being made of magnesium alumina silica ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP396490A JPH03207905A (en) | 1990-01-11 | 1990-01-11 | Burning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP396490A JPH03207905A (en) | 1990-01-11 | 1990-01-11 | Burning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03207905A true JPH03207905A (en) | 1991-09-11 |
Family
ID=11571767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP396490A Pending JPH03207905A (en) | 1990-01-11 | 1990-01-11 | Burning equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03207905A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05256415A (en) * | 1991-11-20 | 1993-10-05 | Mitsubishi Electric Corp | Liquid fuel combuster |
| KR100756285B1 (en) * | 2007-06-28 | 2007-09-06 | 주식회사태평세라믹스 | How to make a burner head with increased heat-resisting and strength |
-
1990
- 1990-01-11 JP JP396490A patent/JPH03207905A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05256415A (en) * | 1991-11-20 | 1993-10-05 | Mitsubishi Electric Corp | Liquid fuel combuster |
| KR100756285B1 (en) * | 2007-06-28 | 2007-09-06 | 주식회사태평세라믹스 | How to make a burner head with increased heat-resisting and strength |
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