JPS603130B2 - liquid fuel combustor - Google Patents
liquid fuel combustorInfo
- Publication number
- JPS603130B2 JPS603130B2 JP4092381A JP4092381A JPS603130B2 JP S603130 B2 JPS603130 B2 JP S603130B2 JP 4092381 A JP4092381 A JP 4092381A JP 4092381 A JP4092381 A JP 4092381A JP S603130 B2 JPS603130 B2 JP S603130B2
- Authority
- JP
- Japan
- Prior art keywords
- partition plate
- liquid fuel
- combustion
- tube
- fuel combustor
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D3/00—Burners using capillary action
- F23D3/02—Wick burners
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wick-Type Burners And Burners With Porous Materials (AREA)
Description
【発明の詳細な説明】
本発明は灯芯気化式の液体燃料燃焼器に関するもので、
内炎筒及びこれに装着される仕切板によって空気供給量
分布及び温度分布を整え、タール状物質等に起因する燃
焼量の低下、排ガスの悪化を抑え、長期間に渡る安定燃
焼を維持せしめることを目的とするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wick vaporization type liquid fuel combustor.
To adjust the air supply amount distribution and temperature distribution using the inner flame tube and the partition plate attached thereto, suppress the reduction in combustion amount caused by tar-like substances, and the deterioration of exhaust gas, and maintain stable combustion over a long period of time. The purpose is to
灯芯の毛細管現象により液体燃料を吸い上げて灯芯先端
部で気化させ、燃焼筒内で燃焼せしめる、いわゆる灯芯
気化式の液体燃料燃焼器は従来より石油ストーブ、石油
コンロ等に広く用いられているが、燃焼の安定性及び長
期間の使用に対する寿命、性能等に種々の欠点を有して
いた。The so-called wick vaporization type liquid fuel combustor, in which liquid fuel is sucked up by the capillary action of the wick, vaporized at the tip of the wick, and then combusted within the combustion tube, has been widely used in oil stoves, oil stoves, etc. It had various drawbacks in terms of combustion stability, long-term use life, performance, etc.
即ち■ 燃焼筒の空気供〉給量は該燃焼筒の通気力(ド
ラフト)によって決定され、周囲の温度や気流(風)に
よって大きく影響を受ける。また燃焼筒内の内、外炎筒
壁面での気孔炎は空気と燃料ガスとの比及び周囲の温度
によって変化し、風や燃焼筒への衝撃によって気孔炎が
生成したり消滅したりする変化が容易に生じていた。従
って灯芯に含有される液体燃料に供〉給される気化潜熱
が容易に変化し、上記の様な温度、風、衝撃等の外乱因
子によって燃料気化量が不安定となるのであった。■
また灯芯先端部は燃焼筒内に蟹出されており、高温でか
つ酸素の介在する雰囲気にさらされているから、燃料の
一部がここで酸化、重縮合反応を受けタール状物質が生
成される。That is, (1) The amount of air supplied to the combustion tube is determined by the ventilation force (draft) of the combustion tube, and is greatly influenced by the surrounding temperature and air current (wind). In addition, the pore flames on the inner and outer walls of the combustion tube change depending on the ratio of air to fuel gas and the surrounding temperature, and the pore flames are generated and extinguished due to wind and impact on the combustion tube. occurred easily. Therefore, the latent heat of vaporization supplied to the liquid fuel contained in the lamp wick changes easily, and the amount of fuel vaporized becomes unstable due to disturbance factors such as temperature, wind, and impact. ■
In addition, the tip of the wick is exposed inside the combustion tube and is exposed to a high temperature and oxygen-containing atmosphere, so some of the fuel undergoes oxidation and polycondensation reactions here, producing tar-like substances. Ru.
このタール状物質は灯芯の表面及び内部の毛細管を閉塞
し、燃料の吸い上げや気化を抑制するために、燃料気化
量が減衰するという結果を招来する。■ 上記燃料気化
量の減衰によって、燃焼筒の燃焼空間内での空燃比のバ
ランスが頼れ、不完全燃焼状態となるため、有毒な一酸
化炭素や臭気やススが大量に発生するという不具合を招
いていた。This tar-like substance blocks the surface and internal capillary tubes of the wick and suppresses the uptake and vaporization of fuel, resulting in a reduction in the amount of fuel vaporized. ■ Due to the above-mentioned attenuation of the amount of fuel vaporized, the balance of the air-fuel ratio within the combustion space of the combustion tube becomes unreliable, resulting in incomplete combustion, which leads to problems such as the generation of large amounts of toxic carbon monoxide, odor, and soot. was.
■ また上記タール状物質の灯芯先端部への蓄積により
、点火が困難になったり、点火後に安定燃焼へ移行する
に長時間を要するようになったりし、その間著しい臭気
やスス、一酸化炭素等を発生する結果にもなっていた。■ Also, due to the accumulation of the above tar-like substances at the tip of the lamp wick, it becomes difficult to ignite or it takes a long time for stable combustion to occur after ignition, during which time a significant odor, soot, carbon monoxide, etc. This also resulted in the occurrence of
またこのタール状物質が灯芯と芯内、外筒等の金属部と
を固着させ、灯芯を下げて消火せしめるという操作がで
きない様な危険な状態を招く場合もあった。本発明は上
記従釆の欠点を解消し、長期間に渡って安定した点火、
燃焼性能を確保すると共に、燃焼中の外乱因子に対する
安定性のある燃焼器を提供するもので、以下本発明の一
実施例を添付図に基づき説明する。In addition, this tar-like substance could cause the wick to adhere to metal parts such as the inside of the wick and the outer tube, resulting in a dangerous situation in which it was impossible to lower the wick to extinguish the fire. The present invention eliminates the drawbacks of the above-mentioned conventional methods, and provides stable ignition over a long period of time.
This invention provides a combustor that ensures combustion performance and is stable against disturbance factors during combustion.One embodiment of the present invention will be described below with reference to the accompanying drawings.
第1図に於て1は燃焼節で、円筒状の内炎筒2、外炎筒
3、外筒4を略同0円状に配して構成している。In FIG. 1, reference numeral 1 denotes a combustion node, which is composed of a cylindrical inner flame tube 2, outer flame tube 3, and outer tube 4 arranged in substantially the same circular shape.
内炎筒2の内側には円板状の仕切板5が装着されている
。また内炎筒2及び外炎筒3には夫々多数の空気孔2a
,3aが穿けられており、内炎筒2と外炎筒3との間に
燃焼空間6が形成されている。7は芯内筒、8は芯外筒
で、この両者に侠持されて芯押え金具9に支持された灯
芯10が設けられている。A disk-shaped partition plate 5 is attached to the inside of the inner flame cylinder 2. In addition, the inner flame tube 2 and the outer flame tube 3 each have a large number of air holes 2a.
, 3a are bored, and a combustion space 6 is formed between the inner flame tube 2 and the outer flame tube 3. Reference numeral 7 denotes an inner wick tube, 8 an outer wick tube, and a wick 10 supported by a wick holding fitting 9 is provided between the two.
灯芯10の先端部は燃焼空間6に突出され燃料気化部1
0aとなっている。ここで仕切板5には複数の閉口5a
が設けられているが、開口5aは第2図のごとく仕切板
5の半径Rに対して中心よりr≦2/3■Rの位置に集
中して設けており、かつ複数の閉口5aの面積の和は仕
切板5の面積(けR2)(すなわち内炎筒2の内側の水
平方向の断面積)の20%以下としている。The tip of the lamp wick 10 protrudes into the combustion space 6 and is connected to the fuel vaporization section 1.
It is 0a. Here, the partition plate 5 has a plurality of closing holes 5a.
However, as shown in Fig. 2, the openings 5a are concentrated at a position r≦2/3■R from the center with respect to the radius R of the partition plate 5, and the area of the plurality of closed openings 5a is The sum of these is set to be 20% or less of the area (R2) of the partition plate 5 (that is, the horizontal cross-sectional area inside the inner flame cylinder 2).
上記構成に於て、燃焼筒1のドラフトによって上昇する
空気流のうち、内炎筒2内を通る空気は仕切板5によっ
て一部がさえぎられ、横方向の勤氏及び静圧となって内
炎筒2の空気孔2aへと流れる。In the above configuration, among the airflow rising due to the draft of the combustion tube 1, part of the air passing through the inner flame tube 2 is blocked by the partition plate 5, resulting in lateral pressure and static pressure. It flows to the air hole 2a of the flame tube 2.
即ち第3図に示す様に、芯内筒7内を上昇した空気(矢
印A)は大部分は仕切板5の関口5aを経て更に上方が
流れるが、一部は仕切板5の下方の空気孔2aから燃焼
空間6へと流れる。ここで仕切版5の抵抗によって特に
空気Aは仕切板!5の直下段の空気孔2aに多量に流れ
、この部分に空気量が多くて、気孔炎Fが形成され易い
浪合気層をつくる。このため、第3図の様にこの位直に
安定した気孔炎Fが形成され、風や衝撃等の外乱因子に
係らず、一定の熱量を灯芯10の燃料気化部10aに供
給し、燃料の気化量を安定できる。更にこの仕切板5の
直下位の空気孔2aを密に配することによって、気孔炎
Fの相互作用により内炎筒2の壁面温度を充分上昇せし
め、更に安定した気孔炎Fを形成し、上記外乱因子の影
響を受け難くすることができる。ここで仕切板5の開□
5aの閉口面積比(複数の開口5aの面積の和/仕切板
5の全面積;汀R2)に対する、燃焼中に燃焼筒1の正
面から風を当てた時の仕切板5直下位の気孔炎Fの安定
率(気孔炎Fの残存率)を、3種類の燃焼筒1仕様に対
し示すと第5図の様な結果となった。That is, as shown in FIG. 3, most of the air (arrow A) rising inside the core cylinder 7 passes through the entrance 5a of the partition plate 5 and flows further upward, but some of the air flows below the partition plate 5. It flows from the hole 2a into the combustion space 6. Here, due to the resistance of the partition plate 5, especially the air A is the partition plate! A large amount of air flows into the air hole 2a immediately below the air hole 2a, and there is a large amount of air in this portion, creating a nami aiki layer in which the stomatal flame F is likely to be formed. Therefore, as shown in Fig. 3, a stable pore flame F is formed, and a constant amount of heat is supplied to the fuel vaporization part 10a of the lamp wick 10, regardless of disturbance factors such as wind and shock, and the fuel is The amount of vaporization can be stabilized. Furthermore, by densely arranging the air holes 2a directly below the partition plate 5, the wall temperature of the inner flame cylinder 2 is sufficiently increased due to the interaction of the stomatal flame F, and a more stable stomatal flame F is formed. It can be made less susceptible to disturbance factors. Open the partition plate 5 here□
Stomatal flame directly below the partition plate 5 when air is applied from the front of the combustion tube 1 during combustion, relative to the closed area ratio of 5a (sum of areas of multiple openings 5a/total area of the partition plate 5; seam R2) When the stability rate of F (residual rate of pore flame F) is shown for three types of combustion cylinder 1 specifications, the results are shown in Figure 5.
この第5図からわかるように3種類とも約20%以下の
関口面積比にすれば気孔炎Fが極めて安定する。更に、
関口5aの位置を、仕切板5の中心部に集中させること
により、従釆は第4図aの様に内炎筒2の内壁に添って
空気が上昇し、内炎筒2の壁面温度を降下させていたも
のを、第4図bの様に還流層を形成し、内炎筒2の壁面
温度を降下させ難くできる。従って気孔炎Fは安定化す
ると共に、燃料気化部10aにタール状物質が生成蓄積
し、燃料気化量が低下した時に、容易に気孔炎F力・ミ
下方の空気孔2a近傍に形成される温度条件と成し得る
。即ち、燃料気化部10aからの燃料気化量が減少した
時、燃焼空間6の下方も燃焼可能な空燃比となるが、内
炎筒2の壁面温度が低い従来仕様では気孔炎Fが形成さ
れ難かったが「本実施例では内炎筒2の壁面温度を高く
できるので、燃料気化量の低下共に第4図bのFで示す
様な新たな気孔炎を形成して、燃料気化部10aに与え
る熱量を増加し、燃料気化量を回復すると共に「燃料気
化部10aに蓄積していたタール状物質を熱分解して除
去することも可能になる。ちなみに石油ストーブを用い
、燃料にはサラダ油を0.1容量%混合した白灯油を使
用して燃焼させた結果、従来の仕様のものでは約1餌時
間で初期燃焼量(:燃料気化量)の70%に低下したが
、本実施例の仕様では70%の燃焼量になるに約150
〜18餌時間を要し、同じくサラダ油混合量を0.0虫
容量%とすると燃焼量70%に低下するに、従来品では
2現時間であるに対し、本実施例では実に100凪寿間
にも延長されるという結果が得られた。ここで仕切板5
の材質は、仕切板5が空気流によって内炎筒2の熱を搬
出する放熱体となっている構成上、熱伝導率の小さな材
料が好ましく、ステンレスやセラミック被覆の金属板等
を用いれば更に効果は助長される。As can be seen from FIG. 5, if the Sekiguchi area ratio for all three types is about 20% or less, the stomatal flame F becomes extremely stable. Furthermore,
By concentrating the position of the entrance 5a at the center of the partition plate 5, air rises along the inner wall of the inner flame tube 2, as shown in Fig. 4a, and the wall temperature of the inner flame tube 2 decreases. By forming a reflux layer as shown in FIG. 4b, the wall temperature of the inner flame tube 2 can be made difficult to drop. Therefore, the pore flame F is stabilized, and when tar-like substances are generated and accumulated in the fuel vaporization section 10a and the amount of fuel vaporized decreases, the temperature of the pore flame F is easily formed near the air hole 2a below the pore flame F. It can be achieved under certain conditions. That is, when the amount of fuel vaporized from the fuel vaporization section 10a decreases, the air-fuel ratio becomes such that combustion is possible in the lower part of the combustion space 6, but in the conventional specification where the wall surface temperature of the inner flame cylinder 2 is low, it is difficult to form the pore flame F. However, in this embodiment, since the wall temperature of the inner flame cylinder 2 can be increased, the amount of fuel vaporized decreases, and a new pore flame as shown by F in FIG. In addition to increasing the amount of heat and recovering the amount of fuel vaporized, it also becomes possible to thermally decompose and remove the tar-like substances that had accumulated in the fuel vaporizing section 10a. As a result of combustion using white kerosene mixed with .1% by volume, the amount of combustion decreased to 70% of the initial combustion amount (fuel vaporization amount) in about 1 feeding time with the conventional specification, but with the specification of this example. So it takes about 150 to reach 70% combustion.
It takes ~18 feeding hours, and when the amount of salad oil mixed is 0.0 insect volume %, the combustion rate decreases to 70%, whereas with the conventional product it takes 2 hours, but in this example, it takes 100 days. The result was that it was extended to Partition plate 5 here
Since the partition plate 5 is a heat radiator that carries out the heat of the inner flame cylinder 2 by air flow, it is preferable to use a material with low thermal conductivity. The effect is enhanced.
また燃料気化量が減少した際に燃料気化部10a近傍に
気孔炎F′が形成されるため、灯芯10の特に燃料気化
部10aの材質はシリカーアルミナ等のセラミックファ
イバーを用いれば、該材質のクラッキング活性と耐熱性
とでより好ましい効果が期待できる。Furthermore, when the amount of fuel vaporization decreases, a pomatal flame F' is formed near the fuel vaporization section 10a. More favorable effects can be expected in terms of cracking activity and heat resistance.
第6図、第7図は本発明の他の実施例を示すもので、先
ず第6図の実施例のものは円板状の仕切板5を、中央部
から周縁部に向けて煩斜させたものであり、次に第7図
の実施例のものは仕切板5の中央の関口5a周縁部を下
方に絞り、下方に伸びた筒体5a′を形成したものであ
り、これらの第6図、第7図のものでは矢印のごとく下
方からの空気流の一部が、空気孔2a部に流れやすくな
り、この空気孔2a部における保炎をさらに安定したも
のにすることができる。6 and 7 show other embodiments of the present invention. First, in the embodiment shown in FIG. Next, in the embodiment shown in FIG. 7, the peripheral edge of the entrance 5a at the center of the partition plate 5 is narrowed downward to form a downwardly extending cylindrical body 5a'. In the case shown in FIGS. 7 and 7, a part of the air flow from below as shown by the arrow is more likely to flow into the air hole 2a portion, and the flame holding in the air hole 2a portion can be made more stable.
以上の様に本発明の液体燃料燃焼器は内炎筒下部空気孔
での気孔炎を安定化させるとともに、この内炎筒の放熱
を抑えたものであるので、燃焼状態が安定化するととも
に、タール状物質に起因する種々の不具合が解消できる
。As described above, the liquid fuel combustor of the present invention stabilizes the pore flame in the lower air hole of the inner flame cylinder and suppresses heat radiation from the inner flame cylinder, so that the combustion state is stabilized and Various problems caused by tar-like substances can be resolved.
第1図は本発明の一実施例にかかる液体燃料燃焼器の一
部分を切断した正面図、第2図はその要部平面図、第3
図及び第4図a,bは・その作用説明図、第5図は特性
図、第6図、第7図はそれぞれ本発明の他の実施例にか
かる液体燃料燃焼器の一部を切断した正面図である。
1・・・・・・燃焼筒、2・・・・・・内炎筒、3・…
・・外炎筒、5……仕切板、5a・…・・関口、6…・
・・燃焼空間、7・・・・・・芯内筒、8・・・・・・
芯外筒、10・・…・灯芯、10a・・・…燃料気化部
。
第1図
第2図
第3図
第4図
第5図
第6図
第7図FIG. 1 is a partially cutaway front view of a liquid fuel combustor according to an embodiment of the present invention, FIG. 2 is a plan view of the main part thereof, and FIG.
Figures 4a and 4b are action explanatory diagrams, Figure 5 is a characteristic diagram, and Figures 6 and 7 are partially cutaway views of liquid fuel combustors according to other embodiments of the present invention. It is a front view. 1... Combustion tube, 2... Inner flame tube, 3...
...Outer flame tube, 5...Partition plate, 5a...Sekiguchi, 6...
... Combustion space, 7... Core inner cylinder, 8...
Core outer cylinder, 10...Light wick, 10a...Fuel vaporization section. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7
Claims (1)
た燃焼空間に突出させるとともに、内炎筒内に仕切板を
設け、この仕切板の半径の2/3以内に1つあるいは複
数の開口を設け、前記開口の面積和を、前記内炎筒内側
の水平方向の断面積の20%以下にしたことを特徴とす
る液体燃料燃焼器。 2 仕切板はステンレス等の熱伝導率の小さな材料で構
成したことを特徴とする特許請求の範囲第1項に記載の
液体燃料燃焼器。 3 内炎筒の前記仕切板が装着された直下の段の空気孔
を、他の位置の空気孔より密に配列したことを特徴とす
る特許請求の範囲第1項または第2項に記載の液体燃料
燃焼器。 4 仕切板を中央から周縁部に向って上方に傾斜させた
ことを特徴とする特許請求の範囲第1項に記載の液体燃
料燃焼器。 5 仕切板の開口部に、下方に伸びた筒体を設けたこと
を特徴とする特許請求の範囲第1項に記載の液体燃料燃
焼器。[Claims] 1. The tip of the wick projects into the combustion space formed inside the combustion tube and between the outer flame tube, and a partition plate is provided inside the inner flame tube, and the radius of the partition plate is 2. 1. A liquid fuel combustor, characterized in that one or more openings are provided within 1/3, and the sum of the areas of the openings is 20% or less of the cross-sectional area in the horizontal direction inside the inner flame cylinder. 2. The liquid fuel combustor according to claim 1, wherein the partition plate is made of a material with low thermal conductivity such as stainless steel. 3. The air hole according to claim 1 or 2, characterized in that the air holes in the stage directly below the partition plate of the inner flame tube are arranged more densely than the air holes in other positions. Liquid fuel combustor. 4. The liquid fuel combustor according to claim 1, wherein the partition plate is inclined upward from the center toward the peripheral edge. 5. The liquid fuel combustor according to claim 1, wherein a cylinder extending downward is provided in the opening of the partition plate.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4092381A JPS603130B2 (en) | 1981-03-20 | 1981-03-20 | liquid fuel combustor |
US06/308,139 US4465457A (en) | 1980-10-09 | 1981-10-02 | Liquid fuel burning device |
CA000387293A CA1184484A (en) | 1980-10-09 | 1981-10-05 | Liquid fuel burning device |
DE8181108033T DE3162386D1 (en) | 1980-10-09 | 1981-10-07 | Liquid fuel burning device |
EP81108033A EP0049865B1 (en) | 1980-10-09 | 1981-10-07 | Liquid fuel burning device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4092381A JPS603130B2 (en) | 1981-03-20 | 1981-03-20 | liquid fuel combustor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57155002A JPS57155002A (en) | 1982-09-25 |
JPS603130B2 true JPS603130B2 (en) | 1985-01-25 |
Family
ID=12594013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4092381A Expired JPS603130B2 (en) | 1980-10-09 | 1981-03-20 | liquid fuel combustor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS603130B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5428650B2 (en) * | 2008-09-12 | 2014-02-26 | 株式会社トヨトミ | Core vertical oil combustor |
JP6389792B2 (en) * | 2015-04-08 | 2018-09-12 | 株式会社コロナ | Oil combustion equipment |
-
1981
- 1981-03-20 JP JP4092381A patent/JPS603130B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS57155002A (en) | 1982-09-25 |
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