JPS58160715A - Liquid fuel burning device - Google Patents

Abstract

PURPOSE:To steadily maintain the stable burning of the titled device by smooth proceeding from the ignition to the stable burning of the device, also preventing the device from decreasing of the amount of fuel vaporization (decreasing of the amount of burning) during long period and producing of odor, soot and monoxide caused by said decreasing of fuel vaporization. CONSTITUTION:Plural air opening line 3a arrayed on a straight line in the vertical direction are arranged plural number on the periphery surface of an outer flame cylinder 3 opposite to a burning vaporizing part 9a of the outer flame cylinder 3. Plural air openings 3c are provided with certain shift for each stair on the upper part of said air opening line 3a. The interval Y, in vertical direction, between the highest air opening 3b of the air opening line 3a and the lowest air opening of said air opening 3c is arranged larger than other interval X, Z between air openings in vertical direction. Also, the interval X, in vertical direction, between the air openings of said air opening line 3a is arranged smaller than other interval Y, Z between air openings in vertical direction. Thereby, the proceeding from the ignition to the stable burning can be smoothly performed.

Description

【発明の詳細な説明】 本発明は石油ストーブ、石油コンロ等に広く利用されて
いる灯芯気化式の液体燃料燃焼装置に関するものである
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wick vaporization type liquid fuel combustion device that is widely used in oil stoves, oil stoves, and the like.

従来、液体燃料を灯芯の毛細管作用にょシ吸上げ、その
先端部より気化させて燃焼させるこの種の液体燃料燃焼
装置にあっては、灯芯先端の燃料気化部は燃焼中宮に高
温にさらされ、また酸素も充分に介在する雰囲気にある
ため、液体燃料の一部が酸化２重縮合されてタール状物
質が容易に生成し、このタール状物質が燃料気化部に生
成蓄積することによシ、従来より下記のような種々の欠
点があった。Conventionally, in this type of liquid fuel combustion device in which liquid fuel is sucked up by the capillary action of the lamp wick and vaporized and burned from the tip of the wick, the fuel vaporization part at the tip of the wick is exposed to high temperature during combustion. In addition, since the atmosphere contains sufficient oxygen, part of the liquid fuel undergoes oxidative double condensation and tar-like substances are easily generated, and this tar-like substance is generated and accumulated in the fuel vaporization section. Conventionally, there have been various drawbacks as described below.

■　点火時は点火ヒータ等によシ灯芯の一部もしくは添
装される火まわシ用補助芯の一部に点火され灯芯全長に
火まわシするが、この人まわりする部分は常に灯油が供
給される状態にあった。しだがって燃焼中に燃料成分の
一部が高温と酸素との存在でタール状物質に変化し、こ
の火まわり部に蓄積し、火まわり部への燃料の供給を阻
害し、あるいはこの部分の気化用の毛細管が閉塞して、
点火や火まわりが不可能となったり、あるいは著しく火
まわりの速度が低下するためにその間に大量の臭気やス
スや一酸化炭素が発生していた。■ When igniting, a part of the wick or an attached auxiliary wick for heating is ignited by an ignition heater, etc., and the entire length of the wick is ignited, but kerosene is always supplied to this rotating part. I was in a state of being exposed. Therefore, during combustion, some of the fuel components change into tar-like substances due to the high temperature and the presence of oxygen, which accumulates in the fire area, obstructing the supply of fuel to the fire area, or causing damage to this area. The capillary tube for vaporization is blocked,
Large amounts of odor, soot, and carbon monoxide were generated during this time, as ignition and firefighting became impossible, or the speed of firefighting slowed significantly.

■　生成したタール状物質が燃料気化部表面および内部
の毛細管を間車し、燃料の吸上げや気化を抑制して燃焼
量の低下を招く。■ The generated tar-like substances clog the capillary tubes on the surface and inside of the fuel vaporizer, suppressing fuel uptake and vaporization, resulting in a reduction in the amount of combustion.

■　燃焼量の低下によって燃焼室における空気と燃料の
バランスが崩れ、不完全燃焼状態となり、有毒な一酸化
炭素や臭気やススが大量に発生することになる。■ The decrease in combustion rate disrupts the balance between air and fuel in the combustion chamber, resulting in incomplete combustion and the generation of large amounts of toxic carbon monoxide, odors, and soot.

■　タール状物質の蓄積によって燃料気化部の体積（厚
さ）が増大し、灯芯を下げての消火ができず危険な状態
になる。■ Due to the accumulation of tar-like substances, the volume (thickness) of the fuel vaporization section increases, making it impossible to extinguish the fire by lowering the wick, creating a dangerous situation.

■　タール状物質が灯芯とこれを支持する金属部との間
に流入して２両者を固着させ、上記の如く動作不能によ
る危険状態を招く場合もあった。またこれらの不具合を
生ぜしめるタール状物質の生成、蓄積は、燃料の一部が
変質（例えば高温あるいは直射日光下に長期間放置して
酸化物、過酸化物等が生成）している場合や、異種の高
沸点成分が混入（例えば灯油中に軽油２重油、サラダ油
２機械油等が混入）している場合に著しく短時間で生ず
る。(2) Tar-like substances may flow between the lamp wick and the metal part supporting it, causing the two to stick together, resulting in a dangerous situation due to inoperability as described above. In addition, the formation and accumulation of tar-like substances that cause these problems can occur if a portion of the fuel has deteriorated (for example, if it is left at high temperatures or under direct sunlight for a long period of time, oxides, peroxides, etc. are formed). , occurs in a very short time when different types of high boiling point components are mixed (for example, light oil, double heavy oil, salad oil, machine oil, etc. are mixed into kerosene).

本発明はこれら従来の欠点を解消し、点火から安定燃焼
への移行をスムーズにし、かつ臭気やススや一酸化炭素
等の発生を抑制するとともに、さらに長期間にわたって
燃料気化量の低下（燃焼量の低下）およびこれに追随し
て生じる臭気やススや一酸化炭素等の発生を防止して安
定燃焼を確保し、安全性の優れた液体燃料燃焼装置を提
供することを目的とするものである。The present invention eliminates these conventional drawbacks, smoothes the transition from ignition to stable combustion, suppresses the generation of odors, soot, carbon monoxide, etc., and reduces the amount of fuel vaporized (burned amount) over a long period of time. The purpose is to provide a liquid fuel combustion device with excellent safety by ensuring stable combustion by preventing the generation of odors, soot, carbon monoxide, etc. that occur following this. .

この目的を達成するために本発明は、多数の空気孔を有
する内・外炎筒間で構成された燃焼室とこの燃焼室に上
方を露出した生息と、この生息の片面に設けた火まわシ
用補助芯と、前記生息と火まわシ用補助芯間に設けた燃
料の通過しない遮蔽体とを備え、前記補助芯の下端を、
燃焼中に燃料液面上に位置する構成にするとともに、前
記生息の燃料気化部に対向する前記内・外炎筒の少なく
とも一方の局面に上下方向に直線状に複数の空気孔を配
した空気孔列を複数列設け、空気孔列の最上段と空気孔
と、この空気孔の上方の空気孔との間隔は他部における
上下方向の空気孔間隔よシも犬としたものである。In order to achieve this object, the present invention has a combustion chamber composed of an inner and an outer flame cylinder having a large number of air holes, a housing whose upper part is exposed in the combustion chamber, and a firebox provided on one side of the combustion chamber. an auxiliary wick for the fire, and a shield provided between the housing and the auxiliary wick for the fire that prevents fuel from passing through, the lower end of the auxiliary wick being
The air is configured to be located above the fuel liquid level during combustion, and a plurality of air holes are arranged in a straight line in the vertical direction on at least one side of the inner and outer flame tubes facing the fuel vaporization part of the inhabitant. A plurality of rows of holes are provided, and the distance between the uppermost row of air holes and the air hole above this air hole is equal to the distance between the air holes in the vertical direction in other parts.

この構成によって、燃焼中火まわり用補助芯は空焼き状
態にあり、タール状物質の生成蓄積は無く、長期間の使
用においても、点火時、速やかに火まわりする。一方定
常燃焼においては、上下方向に直線状に複数の空気孔を
配した空気孔列の最上段の空気孔で供給される空気に加
えて下段部の空気孔から供給された空気が合流すること
となシ最上段部の空気孔近傍において空気が多量となる
から可燃域となる。したがって使用初期には燃料ガス濃
度が大きいにもかかわらず燃料気化部表面壁である最上
段の空気孔に小さく弱い保炎が形成される。With this configuration, the auxiliary wick for fire surroundings is in a dry firing state during combustion, there is no generation and accumulation of tar-like substances, and even during long-term use, the fire starts quickly when ignited. On the other hand, in steady combustion, in addition to the air supplied from the uppermost air hole of a row of air holes arranged in a straight line in the vertical direction, the air supplied from the lower air hole joins. There is a large amount of air in the vicinity of the air holes at the top of the tank, creating a flammable area. Therefore, in the initial stage of use, a small and weak flame holding is formed in the uppermost air hole which is the surface wall of the fuel vaporizing section, despite the high fuel gas concentration.

次に長期間使用により燃料気化部にタール状物質が生成
蓄積してくると、燃料ガス濃度が低下するとともに燃料
気化部および周囲温度が上昇するために最上段の気孔炎
が大きく強く形成されるようになる。この気孔炎の拡大
により増大した燃焼熱の大部分は燃料気化部に供給され
て気化を促進し燃料気化量（燃焼量）を回復せしめると
ともにタール状物質を熱分解して除去する作用も加わり
、燃料気化量（燃焼量）の低下を防止することとなる。Next, as tar-like substances are generated and accumulated in the fuel vaporization section due to long-term use, the fuel gas concentration decreases and the temperature of the fuel vaporization section and surroundings rises, causing a large and strong pore flame to form at the top. It becomes like this. Most of the combustion heat increased by the expansion of this pore flame is supplied to the fuel vaporization section to promote vaporization and recover the fuel vaporization amount (combustion amount), and also has the effect of thermally decomposing and removing tar-like substances. This prevents a decrease in fuel vaporization amount (combustion amount).

また上記のようにタール状物質が分解除去されるために
燃料気化部の厚さの増大や金属部との固着も避けられ、
灯芯の上下操作に支障をきたすことも防止できる。ここ
で上述の如く定常燃焼中に気孔炎を形成させるために空
気孔列の最上段部近傍においては空気が他部より多量と
なるように設定しているが、点火時においては燃料ガス
濃度が低く空気量が過多となり局部過大燃焼を生じてス
スを発生し易くなるが本発明は、空気孔列の最上段部の
空気孔と、この空気孔上方上空気孔との間隔を他部にお
ける間隔よシも犬として供給空気量を減じているために
、上記のような点火時にススを発生することは全くない
。In addition, as the tar-like substances are decomposed and removed as mentioned above, an increase in the thickness of the fuel vaporization part and adhesion to metal parts can be avoided.
It is also possible to prevent interference with the vertical operation of the lamp wick. As mentioned above, in order to form a pore flame during steady combustion, the air is set to be larger near the top of the air hole row than in other parts, but at the time of ignition, the fuel gas concentration is However, in the present invention, the distance between the air hole in the uppermost part of the air hole row and the upper air hole above this air hole is set to be smaller than the distance in other parts. Since the amount of air supplied is reduced as usual, no soot is generated during ignition as described above.

以下本発明の一実施例を添付図面に基づいて説明する。An embodiment of the present invention will be described below based on the accompanying drawings.

第１図において、１は燃焼筒で、円筒状の内炎筒２、外
炎筒３および外筒４が略同心円状に配されてお９、内炎
筒２と外炎筒３間で燃焼室５が形成されている。一方芯
内筒６と芯外筒７間には円筒状の芯押え金具８に固定さ
れた円筒状の灯芯９が設けられ、灯芯９の先端部は燃料
気化部９ａとして燃焼室６に露出している。灯芯９は灯
芯上下手段（図示せず）によって芯押え金具８とともに
上下操作される。内炎筒２には空気孔２ａ、外炎筒３に
は空気孔列３ａおよび空気孔３ｂ。In Fig. 1, reference numeral 1 denotes a combustion tube, in which a cylindrical inner flame tube 2, an outer flame tube 3, and an outer flame tube 4 are arranged approximately concentrically 9, and combustion occurs between the inner flame tube 2 and the outer flame tube 3. A chamber 5 is formed. On the other hand, a cylindrical lamp wick 9 fixed to a cylindrical wick retainer 8 is provided between the inner wick cylinder 6 and the outer wick cylinder 7, and the tip of the wick 9 is exposed to the combustion chamber 6 as a fuel vaporization part 9a. ing. The lamp wick 9 is moved up and down together with the wick holding fitting 8 by a wick up and down means (not shown). The inner flame tube 2 has an air hole 2a, and the outer flame tube 3 has an air hole row 3a and an air hole 3b.

３Ｃがそれぞれ複数個設けられている。第２図は要部拡
大図である。ここで外炎筒３の燃料気化部９ａに対向す
る外炎筒３の局面には、上下方向に直線状に整列された
複数の空気孔列３ａが複数個設けられ、またこの空気孔
列３ａの上方には各段毎に交互にずらして複数の空気孔
３Ｃが設けられている。空気孔列３ａの最上段の空気孔
３ｂの径は、空気孔列３ａの他の空気孔径よりも大にし
ている。また空気孔列３ａの最上段部の空気孔３ｂと空
気孔列直上部の段との上下方向の空気孔間隔Ｙは他部に
おける上下方向の空気孔間隔（Ｘ、Ｚ）よりも大として
いる。空気孔列３ａにおける上下方向の空気孔間隔Ｘは
、他部における上下方向の空気孔間隔（ｙ、ｚ）よりも
小に設けている。灯芯９は第３図の如く主窓９ｂの内側
に先端を突出して火まわり芯９Ｃに添装されており、こ
の両者はアルミ箔等の燃料が通過しない遮蔽体９ｄで隔
離されている。また火まわり芯９Ｃの下端は燃焼中での
燃料液面（破線ムーム）より上方に離間して位置し、灯
芯９を下げて消火した時には燃料中に浸漬するように構
成されている（消火時は燃料液面に破線Ｂ−Ｂ’で示す
所まで浸かる）。なお。A plurality of 3Cs are each provided. Figure 2 is an enlarged view of the main parts. Here, on the surface of the outer flame tube 3 facing the fuel vaporizing portion 9a of the outer flame tube 3, there are provided a plurality of air hole rows 3a arranged linearly in the vertical direction, and the air hole rows 3a are arranged in a straight line in the vertical direction. A plurality of air holes 3C are provided above the air holes 3C, which are alternately staggered in each stage. The diameter of the air hole 3b at the top of the air hole row 3a is larger than the diameter of the other air holes in the air hole row 3a. In addition, the vertical air hole interval Y between the air hole 3b at the uppermost stage of the air hole row 3a and the stage immediately above the air hole row is larger than the vertical air hole interval (X, Z) in other parts. . The air hole spacing X in the vertical direction in the air hole row 3a is set smaller than the air hole spacing (y, z) in the vertical direction in other parts. As shown in FIG. 3, the lamp wick 9 is attached to the fire wick 9C with its tip protruding inside the main window 9b, and both are separated by a shield 9d such as aluminum foil that prevents fuel from passing through. In addition, the lower end of the fire wick 9C is located at a distance above the fuel liquid level (dashed line Moom) during combustion, and is configured to be immersed in the fuel when the fire wick 9 is lowered to extinguish the fire (when extinguishing is submerged in the fuel liquid level to the point indicated by the broken line B-B'). In addition.

９ａは燃料気化部、９ｅは固定用のテープである。9a is a fuel vaporizer, and 9e is a fixing tape.

上記構成において、火まわシ芯９Ｃの一部に点火ヒータ
等によって点火した時、速やかに火まわり芯９Ｃの全長
へ火炎が移行すると同時に順次生息９ｂの燃料気化を促
し、燃焼室６内での安定燃焼状態へと推移する。火まわ
り芯９Ｃの、下端はこの燃焼状態において第３図で説明
したように燃料液面上に設けられておシ、また主窓９ｂ
との間も遮蔽体９ｄで隔離されているから新たな燃料の
供給は無く、火まわり芯８ｂに含有される燃料が気化し
尽すと燃料の無い、いわゆる空焼き状態になる。したが
って燃焼中は火まわり芯９Ｃは空焼き状態にあり、ター
ル状物質の生成蓄積は無く、また消火した時は火まわシ
芯９Ｃの下端が燃料中に浸漬されて速かに燃料が吸い上
げられるから、上記の性能は長期間の使用においても殆
んど変化なく好ましい状態を維持することかで門る。一
方定常燃焼においズは、燃料は主意９ｂ表面から気化す
るが、主意９ｂ表面は高温であり、かつ酸素と接触する
状態にあり、タール状物質の生成蓄積は生じ得る。特に
燃料の一部が酸化、変質したもの、あるいは高沸点成分
が混入した場合等にはタール状物質の生成蓄積は多くな
り、比較的短時間で主窓９ｂの表面あるいは内部の毛細
管が閉塞される。In the above configuration, when a part of the fire wick 9C is ignited by an ignition heater or the like, the flame immediately moves to the entire length of the fire wick 9C, and at the same time, sequentially promotes the vaporization of fuel in the habitat 9b, and the flame inside the combustion chamber 6. Transition to stable combustion state. In this combustion state, the lower end of the fire wick 9C is placed above the fuel liquid level as explained in FIG.
Since it is also isolated by the shield 9d, no new fuel is supplied, and when the fuel contained in the fire wick 8b is completely vaporized, there is no fuel, resulting in a so-called dry firing state. Therefore, during combustion, the fire wick 9C is in a dry state, and there is no accumulation of tar-like substances, and when the fire is extinguished, the lower end of the fire wick 9C is immersed in the fuel, and the fuel is quickly sucked up. Therefore, the above-mentioned performance depends on maintaining a favorable state with almost no change even during long-term use. On the other hand, in the case of steady combustion odor, the fuel vaporizes from the surface of the main body 9b, but the surface of the main body 9b is at a high temperature and in contact with oxygen, so that tar-like substances may be generated and accumulated. Particularly when a part of the fuel is oxidized or deteriorated, or when a high boiling point component is mixed in, the generation and accumulation of tar-like substances increases, and the capillary tubes on or inside the main window 9b are clogged in a relatively short period of time. Ru.

かくして燃料の気化が損なわれ、空燃比崩れを生じ不完
全燃焼状態となって臭気やススや一酸化炭素等を発生す
る原因となる。使用初期における定常燃焼中は燃料気化
部９ａ近傍の燃料ガス濃度が充分大きく、また温度も低
いために、通常気孔炎は形成され難い領域である。燃焼
室６内の流れは下から上への垂直方向の流れであり、下
方の空気孔から流入した空気は幾分拡散しながら直上方
向へと流れる。したがって第４図ムに示すように縦方向
の軸をずらした気孔を配した場合には、空気の流れ（図
中Ｆ）は上方の空気孔に到達する前に周囲の燃料ガスと
混合してしまい燃料気化部９ａの対向部での気孔炎は形
成され難く、形成したとしても不安定で点滅等を生じる
。本実施例では第４図Ｂの如く上下方向に直線状に空気
孔を配した空気孔列３ａを複数列設けているために、空
気孔列３ａの最上段の空気孔３ｂで供給される空気に加
えて下段部の空気孔から供給された空気（空気の流れＦ
）が合流することとなり最上段部の空気孔３ｂ近傍にお
いて空気が多量となるから可燃域となる。したがって使
用初期は燃料ガス濃度が犬きく、温度が低いにもかかわ
らず最上段空気孔３ｂで気孔炎を形成する。最上段の空
気孔３ｂの径は空気孔列３ａの他の空気孔径よりも大と
し、また空気孔列３ａにおける上下方向の空気孔間隔Ｘ
は他部における上下方向の空気孔間隔（ｙ、ｚ）よシも
小としたことにより上記効果が増大され安定した気孔炎
を形成することができる。ここで上記の如く定常燃焼中
に気孔炎を形成させるために空気孔列３ａの最上段部近
傍においては空気が他部より多量となるように設定して
いるから、燃料ガス濃度の低い点火立上り時においては
空気量が過多となり局部過大燃焼を生じてススを発生し
易くなるが、空気孔列３ａの最上段部と空気孔列３ａ直
上部の段の上下方向の空気孔間隔Ｙは他部における間隔
Ｘ、Ｚよシも大として供給空気量を減じていることによ
り、点火立上り時にススを発生することは実用上皆無で
ある。次に第５図ムで示すように使用初期における気孔
炎ｆは燃料ガス形成され、この状態で定常燃焼となる。This impairs the vaporization of the fuel, causing the air-fuel ratio to collapse and resulting in incomplete combustion, which causes the generation of odors, soot, carbon monoxide, and the like. During steady combustion in the initial stage of use, the fuel gas concentration near the fuel vaporization section 9a is sufficiently high and the temperature is low, so that this is an area where pore flames are usually difficult to form. The flow within the combustion chamber 6 is a vertical flow from bottom to top, and the air flowing in from the lower air holes flows directly upward while being somewhat diffused. Therefore, when the air holes are arranged with their vertical axes shifted as shown in Fig. 4, the air flow (F in the figure) mixes with the surrounding fuel gas before reaching the upper air hole. It is difficult for a pore flame to form in the opposing part of the fuel vaporization part 9a, and even if it does, it is unstable and causes flashing and the like. In this embodiment, since a plurality of air hole rows 3a are provided in which air holes are arranged linearly in the vertical direction as shown in FIG. 4B, air is supplied from the air hole 3b at the top of the air hole rows 3a In addition to the air supplied from the air holes in the lower part (air flow F
) will merge, and a large amount of air will be present in the vicinity of the air hole 3b in the uppermost section, resulting in a flammable region. Therefore, at the beginning of use, the fuel gas concentration is high and a pore flame is formed in the uppermost air hole 3b despite the low temperature. The diameter of the uppermost air hole 3b is larger than the diameter of the other air holes in the air hole row 3a, and the air hole interval in the vertical direction in the air hole row 3a is
By making the vertical air hole spacing (y, z) smaller in other parts, the above effect is enhanced and a stable pore flame can be formed. As mentioned above, in order to form a pore flame during steady combustion, the air is set to be larger in the vicinity of the uppermost part of the air hole row 3a than in other parts, so the ignition start-up with low fuel gas concentration At times, the amount of air becomes excessive, causing local excessive combustion and making it easy to generate soot. By making the intervals X and Z larger and reducing the amount of air supplied, it is virtually impossible to generate soot at the time of ignition startup. Next, as shown in FIG. 5, fuel gas is formed in the pore flame f at the initial stage of use, and steady combustion occurs in this state.

一方長期間使用によシ第６図Ｂに示すように燃料気化部
９ａにタール状物質ｔが蓄積してくると、燃料気化部９
ａおよび周囲の温度も上昇し、かつ空気孔３ｂ近傍も燃
料ガス濃度が低下するため、燃料気化部ｅａ側に大きく
強い気孔炎ｆが形成されるようになる。わずかの燃料気
化量の低下によって容易に気孔炎ｆの拡大を生じるとと
もに気孔炎ｆの拡大は燃料気化量の低下度合に合致する
。この気孔炎ｆは燃料気化部９ａに対向する位置にある
から、気孔炎ｆの拡大により増加した燃焼熱の大部分を
他ヘロスすることなく燃料気化部９ａに与えて気化を促
進し燃料気化量を回復せしめるとともに蓄積していたタ
ール状物質ｔを熱分解して除去する作用も加わシ、燃料
気化量の低下を防止する。On the other hand, when the tar-like substance t accumulates in the fuel vaporization section 9a as shown in FIG.
a and the surrounding temperature also rise, and the fuel gas concentration also decreases in the vicinity of the air hole 3b, so that a large and strong stomatal flame f is formed on the side of the fuel vaporization part ea. A slight decrease in the amount of fuel vaporization easily causes the expansion of the pore flame f, and the expansion of the pore flame f matches the degree of decrease in the amount of fuel vaporization. Since this pore flame f is located at a position facing the fuel vaporization section 9a, most of the combustion heat increased due to the expansion of the pore flame f is given to the fuel vaporization section 9a without being lost to other heat sources, promoting vaporization and increasing the amount of fuel vaporized. It also has the effect of thermally decomposing and removing accumulated tar-like substances t, thereby preventing a decrease in the amount of fuel vaporized.

かくして燃料気化部９ａに生成されるタール状物質の量
に応じて空気孔３ｂの気孔炎ｆが燃料気化部９ａ側に拡
大形成され、燃料気化量の低下を抑制するとともに、タ
ール状物質ｔの分解除去が行われ、長期間にわたって臭
気やススや一酸化炭素等を発生しない良好な燃焼を維持
することができる。なお本実施例においては主窓９ｂを
外側に火まわり芯９Ｃを内側にして外炎筒′３に穿けら
れた空気孔列３ａとしているが、この逆でも上記効果を
十分発揮することができる。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％混合した灯油を使
用して燃焼させた時の効果を第６図に示す。従来のもの
（実線ム）では約１０時間で発熱量（ＫｃａＱ／ｈ　）
が定格の７０％に減少し、−酸化炭素や臭気の発生量が
増大したが、本発明実施例のもの（実線Ｂ）では１００
時間燃焼させてもなお定格の９０％以上の発熱量を維持
しておシ、−酸化炭素や臭気の発生も殆んど見られなか
った。In this way, the pore flame f of the air hole 3b is expanded toward the fuel vaporization section 9a in accordance with the amount of tar-like substances generated in the fuel vaporization section 9a, suppressing a decrease in the amount of fuel vaporization, and reducing the tar-like substance t. It is decomposed and removed, and good combustion can be maintained over a long period of time without producing odor, soot, carbon monoxide, etc. In the present embodiment, the air hole row 3a is formed in the outer flame tube '3 with the main window 9b facing outside and the fire wick 9C facing inside, but the above effect can also be sufficiently achieved even in the opposite case. Incidentally, Figure 6 shows the effect of burning kerosene mixed with 0.1% by volume of salad oil in a kerosene stove. The conventional model (solid line) loses heat (KcaQ/h) in about 10 hours.
-The amount of carbon oxide and odor generated increased to 70% of the rating, but in the example of the present invention (solid line B)
Even after burning for a long time, the calorific value was maintained at 90% or more of the rated value, and almost no carbon oxide or odor was observed.

また上記構成では、タール状物質ｔが分解除去されるた
めに、点火時の着火性や火移り性も損われることなく安
定した好ましい性能を維持することができる。また燃料
気化部９ａの厚さの増大や、芯内筒６や芯外筒７等の金
属部との固着も避けられ、灯芯９の上下操作に支障をき
たすことも防止できる。Further, in the above configuration, since the tar-like substance t is decomposed and removed, stable and preferable performance can be maintained without impairing the ignitability and fire transferability at the time of ignition. Further, an increase in the thickness of the fuel vaporizing portion 9a and adhesion to metal parts such as the inner wick tube 6 and outer wick tube 7 can be avoided, and hindrance to vertical operation of the lamp wick 9 can also be prevented.

以上のように本発明の液体燃料燃焼装置は、点火から安
定燃焼への移行をスムーズにし、かつ臭気やススや一酸
化炭素等の発生を抑制するとともに、さらに長期間にわ
たって燃料気化量の低下防止およびこれに追随して生じ
る臭気、スス、−酸化炭素等の発生を極めて少なくする
ことができる。As described above, the liquid fuel combustion device of the present invention smoothes the transition from ignition to stable combustion, suppresses the generation of odor, soot, carbon monoxide, etc., and also prevents a decrease in the amount of fuel vaporized over a long period of time. Further, the generation of odor, soot, carbon oxide, etc. that follows this can be extremely reduced.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例にかかる液体燃料燃よび第５
図ム、Ｂはその作用説明図、第６図はその特性図である
。 １・・・・・・燃焼筒、２・・・・・・内炎筒、２ａ・
・・・・・空気孔、３・・・・・・外炎筒、３ａ・・・
・・・空気孔列、３−ｂ・・・・・・最上段空気孔、３
Ｃ・・・・・・空気孔、４・・・・・・外筒、６・・・
・・・燃焼室、９・・・・・・灯芯、９ａ・・・・・・
燃料気化部、９ｂ・・・・・・主窓、９Ｃ・・・・・・
火まわり芯（火まわり用補助芯）、９ｄ・・・・・・遮
蔽体。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第１
図 第２図 第３図 第４図 （Ａ） （β）FIG. 1 shows a liquid fuel combustion system according to an embodiment of the present invention.
Figure B is an explanatory diagram of its action, and Figure 6 is its characteristic diagram. 1... Combustion tube, 2... Inner flame tube, 2a.
...Air hole, 3...Outer flame tube, 3a...
...Air hole row, 3-b...Top stage air hole, 3
C...Air hole, 4...Outer cylinder, 6...
...Combustion chamber, 9...Light wick, 9a...
Fuel vaporization section, 9b...Main window, 9C...
Fire wick (auxiliary fire wick), 9d... Shielding body. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4 (A) (β)

Claims (3)

【特許請求の範囲】[Claims] （１）多数の空気孔を有する内・外炎筒間で構成された
燃焼室とこの燃焼室に上方を露出した１芯と、との１芯
の片面に設けた火まわシ用補助芯と、前記１芯と火まわ
シ用補肪芯間に設けた燃料の通過しない遮蔽体とを備え
、前記補助芯の下端を、燃焼中に燃料液面上に位置する
構成にするとともに、前記１芯の燃料気化部に対向する
前記内・外炎筒壁の少なくとも一方の局面に上下方向に
直線状に複数の空気孔を配した空気孔列を複数列設け、
空気孔列の最上段との空気孔と、この空気孔上方の空気
孔との上下方向の空気孔間隔は他部における上下方向の
空気孔間隔よりも大にした液体燃料燃焼装置。(1) A combustion chamber consisting of an inner and an outer flame tube with numerous air holes, a wick whose upper part is exposed in this combustion chamber, and an auxiliary wick for a fire starter provided on one side of the wick. , a shielding body provided between said one wick and an auxiliary wick for the fire starter, through which fuel does not pass, and the lower end of said auxiliary wick is positioned above the fuel liquid level during combustion; providing a plurality of air hole rows in which a plurality of air holes are arranged linearly in the vertical direction on at least one side of the inner and outer flame cylinder walls facing the fuel vaporizing portion of the wick;
A liquid fuel combustion device in which the vertical air hole interval between the air hole at the top of the air hole row and the air hole above this air hole is larger than the vertical air hole interval in other parts. （２）　　空気孔列の最上段の空気孔径は同空気孔列の
他の空気孔径よりも大にした特許請求の範囲第０）項記
載の液体燃料燃焼装置。(2) The liquid fuel combustion device according to claim 0, wherein the diameter of the air hole at the top of the air hole row is larger than the diameter of the other air holes in the same air hole row. （３）空気孔列における上下方向の空気孔間隔は、他部
における上下方向の空気孔間隔よシも小にした特許請求
の範囲第（１）項または第？）項記載の液体燃料燃焼装
置。(3) The interval between the air holes in the vertical direction in the air hole row is also smaller than the interval between the air holes in the vertical direction in other parts. ) The liquid fuel combustion device described in item 2.