JPH0317411A - Liquid fuel combustor - Google Patents
Liquid fuel combustorInfo
- Publication number
- JPH0317411A JPH0317411A JP15199489A JP15199489A JPH0317411A JP H0317411 A JPH0317411 A JP H0317411A JP 15199489 A JP15199489 A JP 15199489A JP 15199489 A JP15199489 A JP 15199489A JP H0317411 A JPH0317411 A JP H0317411A
- Authority
- JP
- Japan
- Prior art keywords
- burner head
- cast iron
- iron
- vaporizer
- liquid fuel
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 title claims abstract description 20
- 238000011084 recovery Methods 0.000 claims abstract description 35
- 238000002485 combustion reaction Methods 0.000 claims abstract description 28
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 16
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000006200 vaporizer Substances 0.000 claims description 35
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 16
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 abstract description 4
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000005269 aluminizing Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 13
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
Landscapes
- Spray-Type Burners (AREA)
Abstract
Description
【発明の詳細な説明】
（イ〉産業上の利用分野
この発明は気化器とバーナヘッドとを備え、気化器で気
化された液体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液体燃料燃焼装置に関する
。[Detailed Description of the Invention] (A) Industrial Application Field The present invention includes a vaporizer and a burner head, mixes liquid fuel vaporized by the vaporizer with air, and jets it out from the burner head. The present invention relates to a liquid fuel combustion device for combustion.
（口）従来の技術
この種の液体燃料燃焼装置で仕、例えば、実公平１−１
３２１５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 This kind of liquid fuel combustion device is used, for example,
As disclosed in Japanese Patent No. 3215, the vaporizer is provided with an annular heat recovery section, and a burner head is provided inside this heat recovery section, thereby transmitting combustion heat to the vaporizer through the heat recovery section. It can be used to vaporize 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゜Ｃ以下、
また、球状黒鉛鋳鉄の耐熱温度が６００’Ｃ以下である
のに対し、バーナヘッドの実使用温度が約７ ０ ０
”Ｃであるため、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．また、気
化器も普通鋳鉄や球状黒鉛鋳鉄で作られているが、気化
器の熱回収部の実使用温度が７００〜７５０℃であるた
め、気化器の熱回収部がボロボロになって安定した熱回
収が期待できなくなる問題があった，
この発明は上述した事実に鑑みてなされたものであり、
加工性を損うことなく、バーナヘッドや気化器の熱回収
部の耐熱性を向上させることを目的とする．
（二〉課題を解決するための手段
この発明では、気化器で気化された液体燃料と空気とを
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、バーナヘッドが表面に鉄−アルミニウム
合金層を有する球状黒鉛鋳鉄で作られている構成である
。(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, the heat resistance temperature of ordinary cast iron is below 500°C,
Also, while the heat resistance temperature of spheroidal graphite cast iron is 600'C or less, the actual operating temperature of the burner head is approximately 700'C.
``C, the burner head gradually deteriorated due to high-temperature oxidation, causing deformation and clogging of the flame port of the burner head, resulting in unstable combustion.In addition, the carburetor was also made of ordinary cast iron. However, since the actual operating temperature of the heat recovery section of the vaporizer is 700 to 750℃, the problem is that the heat recovery section of the vaporizer becomes tattered and stable heat recovery cannot be expected. This invention was made in view of the above facts,
The purpose is to improve the heat resistance of the heat recovery part of burner heads and vaporizers without compromising workability. (2) Means for Solving the Problems In this invention, liquid fuel vaporized in a vaporizer is mixed with air, and the mixture is ejected from a burner head for combustion, and the burner head has an iron-aluminum surface. The structure is made of spheroidal graphite cast iron with an alloy layer.
また、この発明では環状の熱回収部を有する気化器と、
この気化器の熱回収部の内側に設けられた熱回収部とを
備え、気化器で気化された液体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、気化器の熱回収部の少なくとも一部が表面に鉄−
アルミニウム合金層を有する球状黒鉛鋳鉄で作られてい
る構成である。Further, in this invention, a vaporizer having an annular heat recovery section,
The vaporizer is equipped with a heat recovery section provided inside the heat recovery section of the vaporizer, and mixes the liquid fuel vaporized in the vaporizer with air, which is ejected from the burner head and combusted. At least a part of the heat recovery section of the
The construction is made of spheroidal graphite cast iron with an aluminum alloy layer.
（＊〉作用
請求項１の液体燃料燃焼装置においては、バーナヘッド
の表面に鉄−アルミニウム合金層が形成され、この合金
層の耐熱温度が約８００゜Ｃであるため、バーナヘッド
の高温酸化が防止される。しかも、母材が成形加工の容
易な球状黒鉛鋳鉄であり、成形後に例えばアルミナイズ
α弛理を施し、表面に鉄−アルミニウム合金層を形成す
ることができるため、加工性が損われる心配がない。(*) In the liquid fuel combustion device according to claim 1, an iron-aluminum alloy layer is formed on the surface of the burner head, and the heat resistance of this alloy layer is about 800°C, so that high-temperature oxidation of the burner head is prevented. Moreover, since the base material is spheroidal graphite cast iron, which is easy to form, and after forming, for example, aluminization α relaxation can be applied to form an iron-aluminum alloy layer on the surface. You don't have to worry about getting caught.
また、請求項２の液体燃料燃焼装置においては、気化器
の熱回収部の少なくとも一部の表面に鉄−アルミニウム
合金層が形成され、この合金層の耐熱温度が約８００℃
であるため、気化器の熱回収部の高温酸化が防止される
。しかも、母材が成形加工の容易な球状黒鉛鋳鉄であり
、成形後に例えばアルミナイズα舛理を行うことができ
るため、加工性が損われる心配がない。Further, in the liquid fuel combustion device according to claim 2, an iron-aluminum alloy layer is formed on at least a part of the surface of the heat recovery section of the vaporizer, and the heat resistant temperature of this alloy layer is about 800 degrees Celsius.
Therefore, high-temperature oxidation of the heat recovery section of the vaporizer is prevented. Moreover, since the base material is spheroidal graphite cast iron that is easy to form and process, and after forming, for example, aluminization can be carried out, so there is no fear that processability will be impaired.
（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．
第１図ないし第４図において、（１）はバーナフγ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。(f) Example Hereinafter, an example of this invention shown in the drawings will be explained. In Figures 1 to 4, (1) is Burnafn (
The air pumped by the air supply pipe (2>
The ventilation case (3) is supplied through the ventilation case (
It is a bottomed cylindrical vaporizer installed above 1), and a primary air inlet (4) is provided at the bottom of the vaporizer (3).The vaporizer (3) is connected to a heater (5). and temperature sensing 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>
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．
また、第２図に示すように、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。（１１〉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（１ｌ〉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、（１７）は気化器本体の外周を囲むバー
ナケース、（１８）Ｇ−ｉバーナケース（１７〉の上に
設けられた燃焼筒、（１９）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（２２）を形成
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〉はフレームロッ
ドである。This protective ring (7) is made of high heat resistant stainless steel (FCH)
It is made of materials with excellent heat resistance and thermal conductivity.
Also, as shown in Figure 2, it has a plurality of claw pieces (7A) and is prevented from coming off by bending the claw pieces (7A). (
9), and the carburetor body (3A)
resting on the upper inward protrusion (10) and
It is provided inside the heat recovery section (3B). (11> is the rotary cone inserted into the carburetor body (3A) through the primary air inlet (4), (12) is the rotary cone (11> drive motor, (13) is the rotary cone (11)) Stirring blades coaxially installed in the carburetor body (3A), (14) a fuel supply pipe with the fuel discharge port facing near the rotary cone (1l), (15) in the carburetor body (3A) A rectifier plate attached to the top of the
(16) is the heat insulating material interposed between the blower case (1) and the vaporizer (3>), (17) is the burner case surrounding the outer periphery of the carburetor body, (18) is the G-i burner case (17>) The combustion tube provided above, (19) is a refractory material interposed between the burner case (17) and the combustion tube (18), and (20) is the secondary material connected to the lower part of the combustion tube (18). Air supply pipe, (
21) is a partition plate that forms an air storage chamber (22) together with the combustion tube (18), and has a large number of air holes (23). (24> is a spark plug, and (25> is a frame) It's a rod.
燃料供給管（１４）からロータリーコーン（ｌ１）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 injected from the fuel supply pipe (14) to the rotary cone (11), the liquid fuel becomes a mist and scatters due to the centrifugal force accompanying the rotation of the rotary cone (11). It vaporizes when it hits the inner wall of the vaporizer body (3A), which is heated by
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〉から噴出して点火プラグ（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。The vaporized fuel then flows in through the primary air inlet (4). The air in the blower case (1) is mixed with the stirring blade (13), and the mixed gas enters the burner head (8) while being uniformly dispersed by the baffle plate (15), and is ejected from the flame port (9). It is ignited by the spark plug (24), which causes gasification and combustion.During combustion, the heat of combustion passes through the protective ring (
7> and the vaporizer body (3A) via the heat recovery section (3B)
Therefore, 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）は第５図に
示すように、母材（８Ａ〉が加工性に優れた球状黒鉛鋳
鉄であり、その表面にはアルミナイズα処理を施すこと
によって鉄−アルミニウム合金層（８Ｂ）が形成されて
いる。すなわち、球状黒鉛鋳鉄を第３図及び第４図に示
すバーナヘッド（８）の形状に加工した後、これを溶融
アルミニウム槽中に浸漬し、鋳物表面とアルミニウムと
の間の相互拡散現象を利用して鋳物表面に２０〜３０μ
の鉄アルミニウム合金層（８Ｂ〉を形成した。In this embodiment, the burner head (8) has a base material (8A) of spheroidal graphite cast iron with excellent workability, as shown in Fig. 5, and its surface is treated with aluminized α. - An aluminum alloy layer (8B) is formed.That is, after processing spheroidal graphite cast iron into the shape of the burner head (8) shown in FIGS. 3 and 4, it is immersed in a molten aluminum bath, Utilizing the mutual diffusion phenomenon between the casting surface and aluminum, 20 to 30 μm is applied to the casting surface.
An iron-aluminum alloy layer (8B) was formed.
第６図ないし第９図は本実施例のバーナヘッド（８）（
＜）と、同一形状で球状黒鉛鋳鉄のみで作られたバーナ
ヘッド（口）と、同一形状でアルミナイズα処理が施さ
れた普通鋳鉄で作られたバーナヘッド（ハ）と、同一形
状で普通鋳鉄のみで作られたバーナヘッド（二）とをオ
ープン中に入れ、庫内温度を５００〜８００゜Ｃに変化
させながら、炎口（９）のスリット幅の大きさと、スリ
ット幅の変化量を求めたものである。また、第１０図な
いし第１３図は材質別にスリット幅の変化特性をまとめ
たものである．これらの図から明らかなように、本実施
例のもの（イ）は５００〜６００℃の雰囲気中で、３０
００時間を経過してもスリット幅の変化がみられず、７
００〜８００℃の雰囲気中で、しかも、３０００時間経
過した時点でも変化量が０．１Ｔａ（１０％）程度の許
容範囲であった。これに対し、球状黒鉛鋳鉄で作られた
もの（口〉や、普通鋳鉄にアルミナイズα処理を施した
もの（ハ）は６００”Ｃ以上でスリット幅の変化が激し
く、普通鋳鉄で作られたもの（二〉は５００℃の雰囲気
中でも３０００時間経過時点でスリット幅の変化が大き
かった．
第１４図は上述した（イ）（口）（ハ〉のものを実際の
燃焼雰囲気中（６８０℃）におき、スリット幅の変化を
調べたものであり、本実施例の（イ〉のものは他のもの
と比べて高い耐熱性を示した．化増量特性をまとめたも
のである．本実施例のもの（イ）は８００℃の雰囲気中
で３０００時間経過しても酸化増量が３％強であり、他
の材質のものに比べて高温酸化による体積膨張が少なく
、促口（９）のスリット幅の変化量が極く僅かとなる。Figures 6 to 9 show the burner head (8) (
<), a burner head (mouth) with the same shape and made only of spheroidal graphite cast iron, a burner head (c) with the same shape and made of normal cast iron with aluminized α treatment, and a burner head (c) with the same shape and made of normal cast iron with the same shape and The burner head (2) made only of cast iron was placed in the open chamber, and while the temperature inside the chamber was varied from 500 to 800°C, the size of the slit width of the flame opening (9) and the amount of change in the slit width were measured. It's what I asked for. Furthermore, Figures 10 to 13 summarize the characteristics of changes in slit width for each material. As is clear from these figures, the product of this example (a) was heated at 30°C in an atmosphere of 500 to 600°C.
No change in slit width was observed even after 00 hours passed, and 7
Even after 3000 hours in an atmosphere of 00 to 800°C, the amount of change was within the allowable range of about 0.1 Ta (10%). On the other hand, for those made of spheroidal graphite cast iron (2) and those made of ordinary cast iron subjected to aluminized α treatment (c), the slit width changes drastically at temperatures above 600"C. For item (2), the change in slit width was large after 3000 hours even in an atmosphere of 500°C. Figure 14 shows the items (a), (c), and (c) mentioned above in an actual combustion atmosphere (680°C). The changes in the slit width were investigated, and the sample (A) of this example showed higher heat resistance than the others.This is a summary of the weight gain characteristics.This example Material (A) has a weight increase of over 3% due to oxidation even after 3000 hours in an atmosphere of 800°C, and has less volumetric expansion due to high temperature oxidation compared to materials made of other materials. The amount of change in width is extremely small.
これは母材（８Ａ）の球状黒鉛鋳鉄が普通鋳鉄に比べて
耐熱性に優れているばかりでなく、鋳鉄の表面が鉄−ア
ルミニウム合金層（８Ｂ）で覆われ、母材（８Ａ）中の
炭素が酸化しにくいためである。This is because the spheroidal graphite cast iron of the base material (8A) not only has superior heat resistance compared to ordinary cast iron, but also because the surface of the cast iron is covered with an iron-aluminum alloy layer (8B), This is because carbon is difficult to oxidize.
本実施例によれば、バーナヘッド（８〉の表面に鉄−ア
ルミニウム合金層（８Ｂ）が形成されているため、母材
（８Ａ〉に球状黒鉛鋳鉄を用い、バーナヘッド（８）の
成形加工が容易に行えるようにしつつ、バーナヘッド（
８）の耐熱温度を約８００″Ｃに高めることができ、経
年劣化に伴って炎口（９）のスリット幅が大幅に減少し
、燃焼が不安定になる不具合を解消できる．また、バー
ナヘッド（８）の耐熱性の向上により、バーナヘッド（
８〉が接炎状態でも使用できることになり、燃焼幅を大
きく設定することもできる．尚、この実施例では気化筒
（３）の熱回収部（３Ｂ）が耐熱性及び熱伝導性に優れ
た高耐熱ステンレス（例えば、ＦＣＨで耐熱温度が１０
００’Ｃ以上）等の保護リング（７）で保護されている
ため、高温酸化によって熱回収部（３Ｂ〉がボロボロに
なることもなく、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）へ良好に伝達さ
れ、長期にわたって安定した熱回収が期待できる。According to this example, since the iron-aluminum alloy layer (8B) is formed on the surface of the burner head (8>), spheroidal graphite cast iron is used as the base material (8A>), and the burner head (8) is formed. burner head (
8) can be raised to approximately 800"C, which eliminates the problem of unstable combustion caused by the slit width of the burner port (9) being significantly reduced due to aging. Also, the burner head (8) Improved heat resistance improves burner head (
8> can be used even when the flame is in contact, and the combustion width can be set wide. In this embodiment, the heat recovery part (3B) of the vaporization cylinder (3) is made of high heat-resistant stainless steel with excellent heat resistance and thermal conductivity (for example, FCH with a heat resistance temperature of 10
00'C or higher), the heat recovery section (3B) will not fall apart due to high-temperature oxidation, and the combustion heat will be transferred to the protection ring (7) and the heat recovery section (3B). ) to the vaporizer main body (3A), and stable heat recovery can be expected over a long period of time.
第１９図及び第２０図はこの発明の他の実施例に関する
ものであり、第１図ないし第４図に示すものと共通する
部分には同一符号が付されている．
この実施例では、気化筒（３）の熱回収部（３Ｂ）を保
護リング（７〉で保護する代わりに、熱回収部（３Ｂ〉
の炎と接する上半部を、アルミナイズα舛理が施された
球状黒鉛鋳鉄で作られた環状部材（３Ｃ）としてある。19 and 20 relate to another embodiment of the present invention, and parts common to those shown in FIGS. 1 to 4 are given the same reference numerals. In this embodiment, instead of protecting the heat recovery section (3B) of the vaporizer cylinder (3) with the protection ring (7), the heat recovery section (3B)
The upper half that comes into contact with the flame is an annular member (3C) made of spheroidal graphite cast iron that has been subjected to aluminized α machining.
この環状部材（３Ｃ）ｊｉ熱回収部（３Ｂ）の上部に螺
合されている。環状部材（３Ｃ〉は表面の鉄−アルミニ
ウム合金層の耐熱温度が約８００℃であるため、７００
〜７５０℃の使用条件下での高温酸化が大幅に抑制され
、加工性及び熱伝導性にも富んでいる。もちろん、気化
器本体（３Ａ）及び他の熱回収部（３Ｂ）は加工性に優
れ、安価に入手可能な普通鋳鉄で作られている．
（ト〉発明の効果
この発明は以上説明したように、気化器で気化された液
体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、及び／
又は気化器の熱回収部の少なくとも一部が表面に鉄−ア
ルミニウム合金層を有する球状黒鉛鋳鉄で作られている
ので、これらの加工性を損うことなく、それぞれの使用
条件下で十分な耐熱性を得ることができ、バーナヘッド
の場合、炎口の変形を抑制して安定した燃焼を行わせる
ことができ、気化器の熱回収部の場合、燃焼熱の熱伝達
が良好に維持され、長期にわたって安定した熱回収が期
待できるものである。This annular member (3C) is screwed onto the upper part of the heat recovery section (3B). The annular member (3C) has an iron-aluminum alloy layer on the surface that has a heat resistance temperature of approximately 800°C, so
High-temperature oxidation is significantly suppressed under usage conditions of ~750°C, and it has excellent workability and thermal conductivity. Of course, the vaporizer main body (3A) and other heat recovery parts (3B) are made of ordinary cast iron, which has excellent workability and is available at low cost. (G) Effects of the Invention As explained above, the present invention provides a device for mixing liquid fuel vaporized in a vaporizer with air and ejecting it from a burner head for combustion.
Alternatively, at least a part of the heat recovery section of the vaporizer is made of spheroidal graphite cast iron with an iron-aluminum alloy layer on the surface, so that it has sufficient heat resistance under the respective usage conditions without impairing its workability. In the case of a burner head, deformation of the flame port can be suppressed to achieve stable combustion, and in the case of a heat recovery section of a vaporizer, good heat transfer of combustion heat can be maintained. Stable heat recovery can be expected over a long period of time.
第１図は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図は気化器の断面図、第３図はバーナヘッ
ドの平面図、第４図は第３図のＢ−Ｂ’線断面図、第５
図は第４図のＣ部の拡大断面図、第６図ないし第９図碌
それぞれ異なる温度の雰囲気中でのバーナヘッドのスリ
ット幅変化特性説明図、第１０図ないし第１３図はそれ
ぞれ異なる材質のバーナヘッドのスリット幅変化特性説
明図、第１４図は実使用条件下でのバーナヘッドのスリ
ット幅変化特性説明図、第１５図ないし第１８図はそれ
ぞれ異なる温度の雰囲気中でのバーナヘッドの酸化増量
特性説明図、第１９図はこの発明の他の実施例を示す液
体燃料燃焼装置の断面図、第２０図は気化器の断面図で
ある。
（３）・・・気化器、 （３Ｂ）・・・熱回収部、 （
３Ｃ〉・・・環状部材（熱回収部）、 （８）・・・バ
ーナヘッド、（８Ｂ）・・・鉄−アルミニウム合金層。Fig. 1 is a cross-sectional view of a liquid fuel combustion device showing an embodiment of the present invention, Fig. 2 is a cross-sectional view of a vaporizer, Fig. 3 is a plan view of a burner head, and Fig. 4 is a line B in Fig. 3. B' line sectional view, 5th
The figure is an enlarged sectional view of part C in Figure 4, Figures 6 to 9 are explanatory diagrams of the slit width change characteristics of the burner head in atmospheres with different temperatures, and Figures 10 to 13 are made of different materials. Fig. 14 is an explanatory diagram of the slit width variation characteristics of the burner head under actual usage conditions, and Figs. FIG. 19 is a sectional view of a liquid fuel combustion apparatus showing another embodiment of the present invention, and FIG. 20 is a sectional view of a vaporizer. (3)... vaporizer, (3B)... heat recovery section, (
3C>... Annular member (heat recovery part), (8)... Burner head, (8B)... Iron-aluminum alloy layer.
Claims (2)
、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、バーナヘッドが表面に鉄−アルミニウム合金層を
有する球状黒鉛鋳鉄で作られていることを特徴とする液
体燃料燃焼装置。(1) In a device that mixes liquid fuel vaporized in a vaporizer with air and injects it from a burner head for combustion, the burner head is made of spheroidal graphite cast iron with an iron-aluminum alloy layer on the surface. A liquid fuel combustion device characterized by:
熱回収部の内側に設けられた熱回収部とを備え、気化器
で気化された液体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、気化器
の熱回収部の少なくとも一部が表面に鉄−アルミニウム
合金層を有する球状黒鉛鋳鉄で作られていることを特徴
とする液体燃料燃焼装置。(2) A vaporizer having an annular heat recovery section and a heat recovery section provided inside the heat recovery section of the vaporizer, which mixes the liquid fuel vaporized by the vaporizer with air; What is claimed is: 1. A liquid fuel combustion device in which at least a part of a heat recovery section of a vaporizer is made of spheroidal graphite cast iron having an iron-aluminum alloy layer on the surface thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15199489A JPH0317411A (en) | 1989-06-13 | 1989-06-13 | Liquid fuel combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15199489A JPH0317411A (en) | 1989-06-13 | 1989-06-13 | Liquid fuel combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0317411A true JPH0317411A (en) | 1991-01-25 |
Family
ID=15530739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15199489A Pending JPH0317411A (en) | 1989-06-13 | 1989-06-13 | Liquid fuel combustor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0317411A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0757114A1 (en) * | 1995-07-31 | 1997-02-05 | Gaz De France | Quasicrystallic coating and process for coating |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59142312A (en) * | 1983-02-02 | 1984-08-15 | Matsushita Electric Ind Co Ltd | Evaporating type kerosene burner |
| JPS6413215U (en) * | 1987-07-16 | 1989-01-24 |
-
1989
- 1989-06-13 JP JP15199489A patent/JPH0317411A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59142312A (en) * | 1983-02-02 | 1984-08-15 | Matsushita Electric Ind Co Ltd | Evaporating type kerosene burner |
| JPS6413215U (en) * | 1987-07-16 | 1989-01-24 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0757114A1 (en) * | 1995-07-31 | 1997-02-05 | Gaz De France | Quasicrystallic coating and process for coating |
| FR2737505A1 (en) * | 1995-07-31 | 1997-02-07 | Gaz De France | COATING IN QUASI-CRYSTALLINE MATERIAL AND ITS DEPOSIT PROCESS |
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