JPH0477201B2 - - Google Patents
Info
- Publication number
- JPH0477201B2 JPH0477201B2 JP62249702A JP24970287A JPH0477201B2 JP H0477201 B2 JPH0477201 B2 JP H0477201B2 JP 62249702 A JP62249702 A JP 62249702A JP 24970287 A JP24970287 A JP 24970287A JP H0477201 B2 JPH0477201 B2 JP H0477201B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- air
- foam
- fuel
- flame
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 56
- 239000000446 fuel Substances 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 20
- 238000005187 foaming Methods 0.000 claims description 10
- 239000010409 thin film Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 description 30
- 239000007789 gas Substances 0.000 description 19
- 239000003350 kerosene Substances 0.000 description 16
- 230000008016 vaporization Effects 0.000 description 11
- 235000019645 odor Nutrition 0.000 description 10
- 238000009834 vaporization Methods 0.000 description 10
- 239000003921 oil Substances 0.000 description 9
- 238000001704 evaporation Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 7
- 239000007921 spray Substances 0.000 description 7
- 238000009841 combustion method Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 238000000889 atomisation Methods 0.000 description 5
- 239000000295 fuel oil Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000002828 fuel tank Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 235000009781 Myrtillocactus geometrizans Nutrition 0.000 description 1
- 240000009125 Myrtillocactus geometrizans Species 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
Landscapes
- Evaporation-Type Combustion Burners (AREA)
- Feeding And Controlling Fuel (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、家庭用石油ストーブから工業窯炉ま
での幅広い範囲における液体燃料の燃焼に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to the combustion of liquid fuels in a wide range of applications, from household kerosene stoves to industrial kilns.
（従来の技術）
液体燃料の燃焼には、ストーブのように暖房を
目的とした燃焼や、被加熱物を加熱するための燃
焼、あるいは内燃機関のような動力発生機関とし
ての燃焼等がある。(Prior Art) Combustion of liquid fuel includes combustion for the purpose of heating as in a stove, combustion for heating a heated object, and combustion as a power generating engine such as an internal combustion engine.
従来の燃焼は、液体燃料を直接気化させて燃焼
させるか、または噴霧装置によつて一度細かい霧
状に***させて燃焼させるかのいずれかの燃焼方
法が用いられている。 Conventional combustion methods include either directly vaporizing and combusting liquid fuel, or splitting it into fine mist using a spray device and then combusting it.
前者の直接気化燃焼は、一般家庭用石油ストー
ブで多用されており、ポツト式（実開昭58−
35713号公報）や芯式（特開昭58−203307号、特
開昭60−64134号各公報）あるいは気化式
（JIS3030）に代表される。 The former type of direct vaporization combustion is often used in general household kerosene stoves.
35713), the core type (Japanese Patent Application Laid-open Nos. 58-203307 and 60-64134), and the vaporization type (JIS 3030).
ポツト式は燃料を蒸発皿によつて蒸発燃焼させ
る方式で、気化部と燃焼部が一体となつている。
芯式は燃料タンクの中に挿入したアスベスト等の
芯に燃料を吸収して蒸発しやすいようにその表面
積が拡大されている。着火すると炎は芯全部に広
がり燃焼を継続する。 The pot type uses an evaporation plate to evaporate and burn the fuel, and the vaporization section and combustion section are integrated.
The wick type has a wick of asbestos or other material inserted into the fuel tank that absorbs the fuel and has an expanded surface area to facilitate evaporation. When ignited, the flame spreads throughout the wick and continues burning.
また、気化式は燃料を気化室又は気化管内で蒸
発させた後、燃焼部で燃焼させる方式で、気化部
と燃焼部が区分されているものである。 Further, the vaporization type is a method in which the fuel is evaporated in a vaporization chamber or a vaporization tube and then burned in a combustion section, and the vaporization section and the combustion section are separated.
一方、噴霧燃焼は家庭用石油ストーブでも一部
使用されているが、その多くは工業窯炉やボイラ
ー等で多用されている。この燃焼は液体燃料を細
かい油滴に霧化させ、空気との接触面積を増大さ
せ、蒸発と燃焼反応の促進がはかられる方式であ
る。 On the other hand, spray combustion is used in some household kerosene stoves, but is mostly used in industrial furnaces and boilers. This combustion atomizes liquid fuel into fine oil droplets, increasing the area of contact with air and promoting evaporation and combustion reactions.
一般に使用される油バーナは、ロータリーバー
ナ、ジエツトバーナ（蒸気噴霧、空気噴霧、機械
噴霧）、特殊バーナ（ガンタイプ高圧噴霧、低圧
噴霧）等によつて燃焼させるものである。また、
一種の点火装置として液体燃料を泡沫化して電気
火花により着火させる例もみられる。（特公昭49
−42018号、特開昭47−38368号公報）
（発明が解決しようとする問題点）
液体燃料を直接気化させるポツト式等の燃焼方
法は、点火後、燃焼室が十分温められるまでは、
燃焼量を急速に増加させることが困難であり、石
油ストーブ等では、点火後暖かくなるまで結構時
間を要する。更に、点火時や消火時の臭いはいか
んともしがたく、石油ストーブは臭いのするもの
であるといつた観念のあることは周知の事実であ
る。 Commonly used oil burners include rotary burners, jet burners (steam atomization, air atomization, mechanical atomization), special burners (gun type high pressure atomization, low pressure atomization), and the like. Also,
There is also an example of a type of ignition device in which liquid fuel is turned into foam and ignited by an electric spark. (Tokuko Showa 49
-42018, Japanese Unexamined Patent Publication No. 47-38368) (Problem to be solved by the invention) In combustion methods such as the pot type that directly vaporizes liquid fuel, after ignition, until the combustion chamber is sufficiently warmed,
It is difficult to rapidly increase the amount of combustion, and it takes a considerable amount of time for kerosene stoves and the like to become warm after ignition. Furthermore, it is a well-known fact that there is a belief that kerosene stoves emit an odor, as the odor produced when the stove is lit or extinguished is unbearable.
特に消火時の臭いは安全性との兼合いもあつ
て、速やかに消す必要があり（例えば、JISでは
地震等の振動または誤まつて器具を転倒させた場
合には10秒以内で消えることを義務づけている）、
その反動として、消火時の臭いがかえつて強くな
る傾向にあるのが実情である。 In particular, the odor when extinguishing a fire must be extinguished quickly due to safety concerns (for example, JIS requires that the odor disappear within 10 seconds in the event of vibrations such as an earthquake or if equipment is accidentally knocked over). ),
As a reaction to this, the fact is that the smell when extinguishing fires tends to become even stronger.
これは、消火操作後、それだけ早く炎がなくな
ることであり、例えば石油ストーブの場合には、
消火後も灯芯やポツトから燃料蒸気が蒸発してお
り、それがまだ熱い燃焼筒内を通過する時に、刺
激臭を有するアルデヒド等に酸化されるため強い
臭いとなり、不快感を与える等の問題となつてい
る。 This means that the flame disappears as quickly as possible after extinguishing the fire; for example, in the case of a kerosene stove,
Even after the fire has been extinguished, fuel vapor still evaporates from the wick or pot, and when it passes through the still-hot combustion cylinder, it oxidizes to aldehydes, etc., which have a pungent odor, creating a strong odor that can cause discomfort. It's summery.
一方、噴霧燃焼方式として、幾種類もの燃焼器
はあるものの、いずれも油滴が空気と共に噴霧さ
れる時に、油滴群は広い粒径分布を有し、各粒子
は互いに相互作用を呈しながら、異なつた方向に
異なつた速度で移動する。 On the other hand, although there are many types of combustors for the spray combustion method, in all of them, when oil droplets are sprayed together with air, the oil droplets have a wide particle size distribution, and each particle interacts with each other. Move in different directions and at different speeds.
従つて、噴霧燃焼は均一性を欠き、油滴は蒸発
と混合の過程が不十分のまま、火炎前面に到達し
拡散炎にかこまれることになり、不均一炎となり
易い。従つて、被加熱物の局部過熱を起し易い等
の問題がある。 Therefore, the spray combustion lacks uniformity, and the oil droplets reach the front of the flame and are surrounded by the diffusion flame without undergoing sufficient evaporation and mixing processes, which tends to result in a non-uniform flame. Therefore, there are problems such as local overheating of the object to be heated.
また、油を噴霧するための設備が必要となり、
動力費等のランニングコストも高くなる欠点があ
つた。 Additionally, equipment for spraying oil is required.
The disadvantage was that running costs such as power costs were high.
特公昭49−42018号公報や特開昭47−38368号公
報に提示されている例は、点火装置として機する
ものであつて、継続的な燃焼を安定して行なう手
段にはなりえない。 The examples presented in Japanese Patent Publication No. 49-42018 and Japanese Patent Application Laid-open No. 47-38368 are intended to be used as ignition devices, and cannot be used as means for stably carrying out continuous combustion.
（問題点を解決するための手段）
本発明は、上記欠点を改善するための新しい燃
焼方法を提供するものである。すなわち、石油ス
トーブの点火直後の燃焼量自在調節と、点火およ
び消火時の臭い防止と、噴霧の不均一炎を改善す
るため、液体燃料を発泡倍率（泡沫体積／液体燃
料体積）５〜50倍の泡沫として、液体燃料表面上
に生成させて燃焼器で継続燃焼させる方法を提供
するもので、とりわけ石油ストーブに採用する
と、その効果が著しいものである。(Means for Solving the Problems) The present invention provides a new combustion method for improving the above-mentioned drawbacks. In other words, in order to freely adjust the amount of combustion immediately after the kerosene stove is lit, to prevent odors during ignition and extinguishing, and to improve uneven flame spray, the liquid fuel is heated to a foaming ratio (foam volume/liquid fuel volume) of 5 to 50 times. This method provides a method for generating foam on the surface of a liquid fuel and continuously burning it in a combustor, and its effects are particularly remarkable when applied to kerosene stoves.
ここで、泡沫とは、液体燃料の薄膜で空気や酸
素などの気体を包囲した気泡の多層集合体であ
り、液中以外の液体表面上に生成されるもので、
液体中に分散して存在する気泡（分散気泡）とは
本質的に異なるものである。 Here, foam is a multilayered aggregate of bubbles surrounding gas such as air or oxygen with a thin film of liquid fuel, and is generated on the surface of a liquid other than inside the liquid.
They are essentially different from air bubbles that exist dispersed in a liquid (dispersed air bubbles).
この泡沫の燃焼において、注目すべき特性は、
従来と違つた状態で、燃料と空気との接触面積を
増大させることができ、蒸発と燃焼反応の促進が
はかられることである。 The noteworthy characteristics of this foam combustion are:
It is possible to increase the contact area between fuel and air in a situation different from conventional methods, and promote evaporation and combustion reactions.
以下、本発明を図面にもとづいて説明する。 Hereinafter, the present invention will be explained based on the drawings.
第１図に示す設備において、燃料タンク１から
供給管８を通して、集泡筒３内の所定の高さまで
燃料油を供給する。集泡筒３内には、発泡させる
ための焼結金属エレメント２が配置されていると
共に、その上部外側には燃焼用２次空気を供給す
るための風箱４が設置されている。 In the equipment shown in FIG. 1, fuel oil is supplied from a fuel tank 1 through a supply pipe 8 to a predetermined height within a bubble collecting cylinder 3. A sintered metal element 2 for foaming is disposed inside the bubble collecting tube 3, and a wind box 4 for supplying secondary air for combustion is installed outside the upper part thereof.
焼結金属エレメント２は多孔質であり、これに
気体供給管６から気体を吹き込むことによりエレ
メントの孔から燃料油中に気体が供給され、燃料
油（灯油、軽油等）は発泡しながら集泡筒３内を
上昇する。なお、エレメント２は金属に限らず、
多孔質のセラミツクス等も利用できる。 The sintered metal element 2 is porous, and by blowing gas into it from the gas supply pipe 6, the gas is supplied into the fuel oil from the pores of the element, and the fuel oil (kerosene, light oil, etc.) foams and collects bubbles. It ascends inside the cylinder 3. Note that the element 2 is not limited to metal.
Porous ceramics etc. can also be used.
この際、同時に燃焼用２次空気管７から風箱４
を介して、燃焼に必要な空気（酸素を含む気体）
を供給し燃焼させるものである。かくして、泡沫
９は容易に安定した燃焼を継続するという結果を
得た。 At this time, at the same time, from the secondary air pipe 7 for combustion to the wind box 4.
Air (gas containing oxygen) required for combustion through
It is used to supply and burn fuel. In this way, the result was obtained that Foam 9 easily continued stable combustion.
そして、気体供給管６から供給する空気量を多
くして泡沫生成量を増加させると共に、２次空気
管７からの空気量を増やすことにより燃焼量を容
易に増加させることができる。また、泡沫生成量
を一定にして２次空気管７からの空気量を増加さ
せるほど、火炎は短かくなるという結果も得た。 Then, by increasing the amount of air supplied from the gas supply pipe 6 to increase the amount of foam generated, and by increasing the amount of air from the secondary air pipe 7, the amount of combustion can be easily increased. It was also found that the flame became shorter as the amount of air from the secondary air pipe 7 was increased while keeping the amount of foam generated constant.
このような結果は、泡沫が火炎面と焼結金属エ
レメント２との間で液体燃料の薄膜が蒸発して、
泡沫中の空気と、それ以外の泡沫に寄与しない空
気および２次空気との混合により、安定燃焼する
ものと考えられる。 Such a result is caused by the evaporation of a thin film of liquid fuel between the flame surface and the sintered metal element 2.
It is thought that stable combustion is achieved by mixing the air in the foam with other air that does not contribute to the foam and secondary air.
これはガス燃焼における１次空気と２次空気の
比率を変えて、火炎形状等の燃焼特性を制御する
方法と似ている。なお、本発明は直接気化燃焼に
おけるアスベスト等の芯を利用して点火する方式
に比べ、生成した泡沫に直接点火源を接触させる
だけで容易に着火できる。 This is similar to the method of controlling combustion characteristics such as flame shape by changing the ratio of primary air to secondary air in gas combustion. In addition, in the present invention, compared to a method of igniting using a wick of asbestos or the like in direct vaporization combustion, ignition can be easily ignited by simply bringing an ignition source into direct contact with the generated foam.
また、消火も気体供給管６への空気の吹込みを
停止することで泡沫はなくなり、直ちに消火す
る。従つて、消火後の燃料蒸気の発生もなく臭い
は感じない。 Furthermore, when extinguishing a fire, the foam is eliminated by stopping the blowing of air into the gas supply pipe 6, and the fire is extinguished immediately. Therefore, no fuel vapor is generated after the fire is extinguished, and no odor is felt.
このように、燃料を泡沫化して燃焼することに
より、気体供給管６からの空気吹込量を調整する
ことと、および２次空気管７からの空気供給量を
変えることで、燃焼量と火炎形状等の燃焼特性を
自在に制御することができる。また、従来技術で
は成し得なかつた石油ストーブでの即暖、臭いな
し燃焼を可能とした。 In this way, by combusting the fuel into foam, by adjusting the amount of air blown from the gas supply pipe 6 and by changing the amount of air supplied from the secondary air pipe 7, the combustion amount and flame shape can be adjusted. It is possible to freely control combustion characteristics such as It also enables instant heating and odorless combustion in kerosene stoves, which was not possible with conventional technology.
次に本発明における２次空気管７から別に空気
を供給しなければならない理由について説明す
る。 Next, the reason why air must be separately supplied from the secondary air pipe 7 in the present invention will be explained.
灯油や軽油等の液体燃料のみで得られる泡沫の
発泡倍率は本発明により特定される要件であり、
その値は５〜50倍である。発泡倍率が高いという
ことは、泡沫を形成する燃料の膜厚が薄く、泡沫
燃料の見掛密度、熱容量が小さいことを意味す
る。したがつて、発泡倍率の下限値５倍は、低温
でも灯油や軽油などの軽質油燃料の蒸発が促進さ
れ、燃料蒸気が燃焼できる下限濃度を確保するの
に必要な値である。また、上限値の50倍は、燃料
蒸気が燃焼できる濃度を確保しつつ燃焼中にも泡
沫形成できる限界に若干の余裕を見た値である。
しかしながら完全燃焼させるに必要な空気の必要
倍率は約9000倍であり、それに泡沫中の空気量は
到底及ばないため更に２次空気（酸素を含む気
体）が必要である。 The foaming ratio of foam obtained only with liquid fuel such as kerosene or diesel oil is a requirement specified by the present invention,
Its value is 5 to 50 times higher. A high foaming ratio means that the film thickness of the foam-forming fuel is thin, and the foamed fuel has a small apparent density and heat capacity. Therefore, the lower limit of the expansion ratio of 5 times is a value necessary to promote the evaporation of light oil fuels such as kerosene and diesel oil even at low temperatures and to ensure the lower limit concentration at which fuel vapor can be combusted. Furthermore, 50 times the upper limit is a value that allows for a slight leeway within the limit at which bubbles can be formed during combustion while ensuring a concentration that allows fuel vapor to be combusted.
However, the required air magnification for complete combustion is about 9000 times, and the amount of air in the foam is far from reaching that amount, so secondary air (a gas containing oxygen) is also required.
しかし、燃焼には気体供給管６から供給した空
気が、泡沫中にとどまらないでそのまま燃焼用空
気として、直接利用できる分もあるので、２次空
気管７から供給される空気量は、理論燃焼空気量
の60〜98％でよい。これは通常、工業窯炉等で使
用されているノズルミツクスタイプのガスバーナ
燃焼とほぼ同程度である。 However, for combustion, some of the air supplied from the gas supply pipe 6 does not remain in the foam and can be used directly as combustion air, so the amount of air supplied from the secondary air pipe 7 is 60 to 98% of the air volume is sufficient. This is approximately the same level as the nozzle-mix type gas burner combustion normally used in industrial kilns and the like.
また、液体燃料にポリマーや界面活性剤を添加
して発泡倍率を高めることにより、より燃焼反応
を促進することも可能である。 It is also possible to further promote the combustion reaction by adding a polymer or a surfactant to the liquid fuel to increase the expansion ratio.
一方、被加熱物を加熱するためのバーナ燃焼
に、この泡沫燃焼を利用する場合には、軽油を除
いて他の液体燃料のみで生成させた泡沫では、泡
沫径の均一性や発泡性の安定化にやや問題があ
る。従つて、発泡剤として、液体燃料にポリマー
や界面活性剤あるいはそれらの混合物、または発
泡性の良い軽油等を混合させて、表面粘度の増加
および表面張力を低下させて、発泡性を改善する
ことで安定した泡沫生成が可能となり、泡沫の燃
焼は安定した均一炎を保ち、被加熱材の局部加熱
を防止する効果を発揮することができる。 On the other hand, when using this foam combustion for burner combustion to heat the object to be heated, foams generated only with other liquid fuels other than light oil will not have uniform foam diameter or stable foaming properties. There is a slight problem with the conversion. Therefore, as a foaming agent, polymers, surfactants, mixtures thereof, light oil with good foaming properties, etc. are mixed with the liquid fuel to increase the surface viscosity and lower the surface tension, thereby improving the foaming properties. This makes it possible to generate stable foam, and the combustion of the foam maintains a stable and uniform flame, making it possible to exhibit the effect of preventing local heating of the heated material.
（実施例）
次に第１図の燃焼装置で燃焼した時の実施例に
ついて詳しく説明する。(Example) Next, an example in which combustion is performed using the combustion apparatus shown in FIG. 1 will be described in detail.
燃料タンク１から供給管８を通して温度20℃の
灯油５を、集泡筒３の中の所定の高さまで供給し
た。次に２次空気管７から風箱４を介して空気12
／ｍｉｎを供給しながら、気体供給管６から約３
／ｍｉｎの空気を送り、集泡筒３内の液面上を粒
径１〜３mm程度の気泡が多層に形成された発泡倍
率約20倍の泡沫９で高さ約100mmまでを充満させ、
泡沫９の上部に赤熱したニクロム線を接触させて
点火した。 Kerosene 5 at a temperature of 20° C. was supplied from the fuel tank 1 through the supply pipe 8 to a predetermined height in the bubble collecting tube 3. Next, air 12 is passed from the secondary air pipe 7 through the wind box 4.
/min from the gas supply pipe 6 while supplying approximately 3
/min of air to fill the liquid surface in the bubble collection tube 3 up to a height of about 100 mm with foam 9 having a foaming ratio of about 20 times, which is made up of multiple layers of air bubbles with a particle size of about 1 to 3 mm.
A red-hot nichrome wire was brought into contact with the top of Foam 9 and ignited.
この時の燃焼状態は青白い火炎で、完全燃焼状
態を安定して継続した。 The combustion state at this time was a pale blue flame, and the complete combustion state continued stably.
また、２次空気管７からの空気量を減少させて
いくと、その火炎は徐々に橙色を呈する様子がう
かがえた。この時の灯油消費量は約0.1/Hであ
つた。 Furthermore, as the amount of air from the secondary air pipe 7 was reduced, the flame appeared to gradually take on an orange color. Kerosene consumption at this time was approximately 0.1/h.
次に、この燃焼状態から気体供給管６からの空
気供給量を15/minに上げると同時に、２次空
気管７からの空気量も55/minに増加させて燃
焼させた。 Next, from this combustion state, the amount of air supplied from the gas supply pipe 6 was increased to 15/min, and at the same time, the amount of air from the secondary air pipe 7 was also increased to 55/min for combustion.
この時は、火炎長さは若干長くなるが、やはり
火炎は青白色を呈して安定燃焼を継続した。この
時の灯油消費量は約0.4/Hであつた。 At this time, although the flame length was slightly longer, the flame still took on a bluish-white color and stable combustion continued. Kerosene consumption at this time was approximately 0.4/h.
その後、気体供給管６からの空気を停止すると
直ちに泡沫は消滅し、消火した。この時には臭い
の発生もなかつた。 Thereafter, when the air supply from the gas supply pipe 6 was stopped, the foam immediately disappeared and the fire was extinguished. At this time, no odor was generated.
このように、本発明の泡沫燃焼は、燃焼能力を
可変することの容易さおよび火炎形状の制御性等
が容易にできる特徴を有するものである。 As described above, the foam combustion of the present invention has the characteristics that the combustion capacity can be easily varied and the flame shape can be easily controlled.
また、以上の説明において、吹込む気体は一般
に空気を使用するが、更に燃焼効率を高めるため
に酸素単体あるいは空気への酸素エンリツチガス
等も使用できる。 Furthermore, in the above description, air is generally used as the gas to be blown in, but in order to further improve the combustion efficiency, oxygen alone or oxygen enriched gas for air can also be used.
また、本実験では一定の径の孔を有するエレメ
ント２に空気を送入するいわゆる送気法により泡
沫を生成させたが、他に撹拌法、振とう法、沸騰
法、減圧法、溶解度減少法あるいはこれらを組合
せた方法もあるが、本発明は泡沫の生成方法を限
定するものではない。 In addition, in this experiment, foam was generated by the so-called air supply method in which air is introduced into the element 2 having holes of a certain diameter, but other methods include stirring method, shaking method, boiling method, depressurization method, and solubility reduction method. Alternatively, there are methods that combine these methods, but the present invention does not limit the foam generation method.
通常液体燃料の温度は０〜30℃の間で使用され
る。また、吹込気体の温度も予熱して使用するこ
とも可能である。特に２次空気の予熱は省エネル
ギー上望ましい。 Usually, the temperature of liquid fuel used is between 0 and 30°C. It is also possible to preheat the temperature of the blown gas before use. In particular, preheating of secondary air is desirable from the viewpoint of energy saving.
（発明の効果）
以上、詳しく説明したように、本発明は液体燃
料を泡沫化して燃焼器で燃焼させる方法で、従来
の直接気化させて燃焼させる方法に比べて、点化
時に芯を使わないで容易に着火させることができ
ると共に、点火直後の燃焼量制御も簡単にでき
る。従つて、ストーブに適用した場合の即暖を可
能とした。(Effects of the Invention) As explained above in detail, the present invention is a method of foaming liquid fuel and burning it in a combustor, which does not use a wick when igniting compared to the conventional method of direct vaporization and combustion. It can be easily ignited, and the amount of combustion immediately after ignition can be easily controlled. Therefore, when applied to a stove, immediate heating is possible.
また、点火、消火に際して従来の直接気化燃焼
では避けることのできなかつた臭いの発生を完全
に防止した。 Furthermore, the generation of odors that could not be avoided with conventional direct vaporization combustion during ignition and extinguishing were completely prevented.
一方、従来の噴霧燃焼方式に比べて、容易に安
定した均一炎を得ることができ、被加熱物の局部
加熱防止を可能とした。 On the other hand, compared to the conventional spray combustion method, it was possible to easily obtain a stable and uniform flame, making it possible to prevent local heating of the heated object.
更に、本発明は、極めて簡単な小型泡沫生成器
のみで、従来の芯や噴霧装置を必要としない安価
な方法であると共に、ランニングコストもほとん
ど必要としない優れた燃焼方法である。 Furthermore, the present invention is an inexpensive method that requires only a very simple small foam generator and does not require a conventional wick or spray device, and is an excellent combustion method that requires almost no running costs.
第１図は本発明を実施するための装置例を示す
断面図である。
１…燃料タンク、２…焼結金属エレメント、３
…集泡筒、４…風箱、５…燃料油（灯油）、６…
気体供給管、７…２次空気管、８…燃料油供給
管、９…泡沫。
FIG. 1 is a sectional view showing an example of an apparatus for implementing the present invention. 1...Fuel tank, 2...Sintered metal element, 3
...Bubble collecting tube, 4...Wind box, 5...Fuel oil (kerosene), 6...
Gas supply pipe, 7... Secondary air pipe, 8... Fuel oil supply pipe, 9... Foam.
Claims (1)
燃料の薄膜で空気（気体）を包囲した気泡の多層
集合体であり発泡倍率が５〜50倍の泡沫化燃料
を、液体表面上に生成させながら安定した燃焼を
継続するに必要な空気を別に供給して、燃焼器で
燃焼させることを特徴とする液体燃料の燃焼方
法。1 In a method of burning a liquid fuel, a foamed fuel, which is a multilayered aggregate of air bubbles surrounding air (gas) with a thin film of the liquid fuel and has a foaming ratio of 5 to 50 times, is generated on the surface of the liquid and stabilized. A method of burning liquid fuel, which is characterized by separately supplying the air necessary to continue the combustion, and burning it in a combustor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24970287A JPH0195205A (en) | 1987-10-05 | 1987-10-05 | Method of burning liquid fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24970287A JPH0195205A (en) | 1987-10-05 | 1987-10-05 | Method of burning liquid fuel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0195205A JPH0195205A (en) | 1989-04-13 |
| JPH0477201B2 true JPH0477201B2 (en) | 1992-12-07 |
Family
ID=17196931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24970287A Granted JPH0195205A (en) | 1987-10-05 | 1987-10-05 | Method of burning liquid fuel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0195205A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0478789A4 (en) * | 1990-03-20 | 1993-03-24 | Nippon Steel Corporation | Method of and device for burning liquid fuel after turning thereof into bubbles |
| KR950012775B1 (en) * | 1990-03-20 | 1995-10-21 | 신 닛뽄 세이데쓰 가부시기가이샤 | Method and apparatus for burning foamed liquid fuel |
| JP2755511B2 (en) * | 1992-01-30 | 1998-05-20 | 新日本製鐵株式会社 | Method and apparatus for burning liquid fuel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5019276A (en) * | 1973-06-22 | 1975-02-28 | ||
| JPS533195A (en) * | 1976-06-30 | 1978-01-12 | Matsushita Electric Works Ltd | Escape guide system |
-
1987
- 1987-10-05 JP JP24970287A patent/JPH0195205A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5019276A (en) * | 1973-06-22 | 1975-02-28 | ||
| JPS533195A (en) * | 1976-06-30 | 1978-01-12 | Matsushita Electric Works Ltd | Escape guide system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0195205A (en) | 1989-04-13 |
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