JPS60248911A - Combustion cylinder - Google Patents

Abstract

PURPOSE:To enable to hold the steady flame shape retention even under oxygen deficient condition by a method wherein the opening area of air holes located lower than air regulating rings on an inner cylinder an an outer cylinder are made larger at the near side than the far side of the air regulating rings. CONSTITUTION:Concerning air holes 2a' located lower than an air regulating ring 7 of an outer flame cylinder 2, the opening area of an air hole 2a'' located nearby the air regulating ring 7 is formed larger than an air hole 2a''' located further lower than the air hole 2a''. Further, concerning air holes 1a' located lower than an air regulating plate 9 of an inner flame cylinder 1, the opening area of an air hole 1a''' located nearby the air regulating plate 9 is formed larger than an air hole 1a''' located further lower than the air hole 1a''. Therefore, in said structure, even though the draft in a space 5 between the inner and outer cylinders is made weaker than normal condition under the oxygen deficient condition, because of the largeness of the air hole 2a'' opening area located nearby the air regulating ring, the air is sufficiently flowed into the space 5 between the inner and outer cylinders in spite of the weak draft as shown by arrow marks. Accordingly, the air is mixed with a kerosene vapor evaporated from a wick B, then the flame shape retention is continued on the air hole 2a''.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は石油ストーブ等の燃焼筒に関するものである。[Detailed description of the invention] Industrial applications The present invention relates to a combustion tube for kerosene stoves and the like.

従来例の構成とその問題点 一般にこの種の燃焼筒は第３図に示すように多数の気孔
１ａ＋２ａｋ有する内炎筒１、外炎筒２と、外炎筒２の
外方下部を覆う外筒３ならびにこの外筒３の上部に外炎
筒２外方を覆う如く設けた熱透過筒４と？同心円状に配
設して構成しである。Conventional structure and its problems In general, this type of combustion tube has an inner flame tube 1 and an outer flame tube 2, each having a large number of pores 1a+2ak, and an outer tube that covers the outer lower part of the outer flame tube 2, as shown in FIG. 3 and a heat transmitting tube 4 provided on the upper part of this outer tube 3 so as to cover the outside of the outer flame tube 2? They are arranged concentrically.

そして第４図に示すように外筒３と熱透過筒４との間に
は内・外炎筒間５ならびに外炎筒２と熱透過筒４との間
６に流入する空気量を規制する規制リング７が設けてあ
り、この空気規制リング７より下方の外炎筒２の気孔２
　ａ’は外炎筒下＃Ｍ寸ではぼ均一に形成してあった。As shown in FIG. 4, between the outer cylinder 3 and the heat transmitting cylinder 4, the amount of air flowing into the space 5 between the inner and outer flame cylinders and between the outer flame cylinder 2 and the heat transmitting cylinder 4 is regulated. A regulating ring 7 is provided, and the air holes 2 of the outer flame tube 2 below the air regulating ring 7 are provided.
a' was almost uniformly formed in #M dimension under the outer flame cylinder.

このため室内の酸素濃度が低下（以下酸欠状態と称す）
すると多量（７）Ｃ０全発生し始めるという問題があっ
た。As a result, the oxygen concentration in the room decreases (hereinafter referred to as an oxygen-deficient state).
Then, there was a problem that a large amount (7) of C0 started to be generated.

すなわち酸欠状態以外の正常時に内・外炎部間筒４との
間６のドラフトよりも十分に犬きく、棋の結果外筒３下
部より流入した空気は破線矢印のように気孔２　ａ’か
ら内外炎筒間５に入り、灯芯８より蒸発した石油蒸気と
混合して気孔２ａ’に保炎を形成し灯芯８より気化する
石油蒸気の−ｍｋ燃焼させ続ける。ところが酸欠状態に
なると内・外炎筒間５の熱透過筒４と対向する部分での
燃焼が次第に下方へ移項して減少し始め、そのドラフト
は正常時に比べると極めて弱いものとなる。その結果、
内・外炎筒間５のドラフトに引かれて破線のように流れ
ていた空気が気孔２ａ’よりも抵抗の少ないを気規制リ
ング７と外炎筒２との間の隙間を通って実線矢印のよう
に上昇し始め、気孔２　ａ’より内・外炎筒間５に流入
する突気は極めて少なくなる。したがって灯芯８か、ら
蒸発した石油蒸気を燃焼させることができなくなり、そ
れ捷で気孔２ａに形成されていた保炎が消滅して灯芯８
から蒸発する石油蒸気は全て燃焼することなくそのま１
上昇することになる。しかも内・外炎筒間５の熱透過筒
４と対向する部分での燃焼力は低下しているので上記石
油蒸気の一部は完全に燃焼することなく燃焼筒外へと放
出され、多量のＣＯが発生する。In other words, under normal conditions other than an oxygen-deficient state, the draft between the inner and outer cylinders 4 is sufficiently higher than the draft 6, and as a result of playing chess, air flowing from the lower part of the outer cylinder 3 flows into the pores 2a' as shown by the broken line arrows. The oil enters between the inner and outer flame cylinders 5, mixes with the petroleum vapor evaporated from the lamp wick 8, forms a flame-holding state in the pores 2a', and continues to burn -mk of the petroleum vapor vaporized from the lamp wick 8. However, when oxygen is deficient, the combustion in the portion between the inner and outer flame cylinders 5 facing the heat transmission cylinder 4 gradually shifts downward and begins to decrease, and the draft becomes extremely weak compared to normal conditions. the result,
The air that was drawn by the draft between the inner and outer flame tubes 5 and flowing as shown by the broken line passes through the gap between the air regulation ring 7 and the outer flame tube 2 through the gap between the air regulation ring 7 and the outer flame tube 2 with less resistance than the air holes 2a', as shown by the solid line arrow. The air starts to rise as shown in FIG. Therefore, the petroleum vapor evaporated from the wick 8 cannot be burned, and the flame retention formed in the pores 2a disappears, causing the wick 8 to burn.
All the petroleum vapor that evaporates from remains as it is without being combusted.
It will rise. Moreover, since the combustion power at the part between the inner and outer flame cylinders 5 facing the heat transmission cylinder 4 is reduced, a part of the oil vapor is released outside the combustion cylinder without being completely combusted, and a large amount of oil vapor is released. CO is generated.

発明の目的 本発明は上記間穎点に鑑みてなしたもので、酸欠時にお
けるＣＯ発生の低下を目的としたものである６ 発明の構成 上記目的全達成するため本発明は、燃焼筒の突気規制リ
ング下方に位置する外炎筒の気孔のうち、空気規制リン
グに近い部分の気孔開口面積を大きくし、これよりも下
方を前記部分に比べて小さくしたものである。OBJECTS OF THE INVENTION The present invention was made in view of the above-mentioned sterilization point, and aims to reduce CO generation during oxygen deficiency. Among the pores of the outer flame tube located below the air rush regulation ring, the pore opening area of the part near the air regulation ring is made larger, and the part below this is made smaller than the above-mentioned part.

実施例の説明 以下その実施例を第１因と第２図を用いて説明するが、
従来例と同一部分は同一番号を附記して説明は省略し、
異なる部分のみ説明すると、外炎筒２の突気規制リング
７よりも下方の気孔２　ａ’のうち空気規制リング７に
近い部分の気孔２ａ″はそれよりも下方の気孔２ａ＃／
よりもその開口面積を大きく設定しである。そして本実
施例では内炎筒１の空気調整板９よりも下方の気孔１　
ａ／も空気調整板９に近い側の気孔１ａ″の開口面積を
それよりも下方の気孔１ａ□よりも大きくしである。DESCRIPTION OF EXAMPLE The example will be explained below using the first factor and FIG. 2.
The same parts as the conventional example are given the same numbers and the explanation is omitted.
To explain only the different parts, among the pores 2a' of the outer flame tube 2 below the sudden air regulation ring 7, the pores 2a'' in the part closer to the air regulation ring 7 are the pores 2a#/
The opening area is set larger than that of the conventional one. In this embodiment, the air holes 1 are located below the air adjustment plate 9 of the inner flame tube 1.
A/ is also such that the opening area of the pores 1a'' on the side closer to the air adjustment plate 9 is larger than that of the pores 1a□ on the lower side.

したがってこの構成によると酸欠状態になって内・外炎
筒間５のドラフトが正常時よりも弱くなったとしても、
空気規制リングの近くの気孔２ａ″の開口面積が大きい
ため上記弱いドラフトでも空気は矢印の如く十分内・外
炎筒間５に流入し、灯芯８から蒸発してきた石油蒸気と
混合して気孔２ａ″に保炎を形成し続ける。特に上記開
口面積の大きい気孔２８″群は突気規制リング７の下方
近くに設けであるので、外筒３下方から流入してきた空
気がこの空気規制リング７に当って外炎筒２側に向きを
変える作用も加わ２て上記しり空気の流入は保炎を形成
するのに十分な量が確保されるようになる。したがって
灯芯８から蒸発し続ける石油蒸気はその一部がこの保炎
部分で燃焼することになるためそのまま上昇する未燃石
油蒸気は少なくなり、熱透過筒４と対向する内・外炎筒
間５で上記未燃石油蒸気はほぼ完全に燃焼することにな
る。Therefore, with this configuration, even if the draft between the inner and outer flame cylinders 5 becomes weaker than normal due to oxygen deficiency,
Since the opening area of the pores 2a'' near the air regulation ring is large, even with the weak draft described above, air flows sufficiently into the space between the inner and outer flame cylinders 5 as shown by the arrow, mixes with petroleum vapor evaporated from the lamp wick 8, and flows into the pores 2a. Continue to form a flame-holding state. In particular, the group of air holes 28'' with a large opening area is provided near the bottom of the blast regulation ring 7, so that the air flowing in from below the outer cylinder 3 hits the air regulation ring 7 and is directed toward the outer flame cylinder 2. With the addition of the effect of changing the temperature, a sufficient amount of air is secured to form a flame-holding state.Therefore, part of the oil vapor that continues to evaporate from the wick 8 is absorbed into this flame-holding area. Since it is combusted, the amount of unburned petroleum vapor that rises as it is is reduced, and the unburned petroleum vapor is almost completely combusted between the inner and outer flame cylinders 5 facing the heat transmitting cylinder 4.

特に本実施例では内炎筒側の気孔１，１１　、１ａ′ｒ
についても外炎筒と同様の配慮がしであるので、前述し
た作用は内炎筒側でも行なわれることになり、より完全
な燃焼が期待できる。In particular, in this embodiment, the pores 1, 11, 1a'r on the inner flame cylinder side
Since the same consideration is given to the outer flame tube, the above-mentioned action is also performed on the inner flame tube side, and more complete combustion can be expected.

第５図は従来のものに対する本実施例品の排ガス特性を
示し、従来品Ａに比べ本実施例品Ｂは酸素濃度１５％で
もｃｏ発生量が極めて少ないことがわかる〇 なお上記外炎筒２のを気規制すング近くの気孔２ａ′！
ならびに内炎筒１の空気調整板近くの気孔１　ａｎは、
各気孔側々の孔径を大きくする、或いは各気孔の孔径は
同じとしてその気孔密度を大くする等の方法によって開
口面積を大きくすればよく、いずれの方法であっても同
様の効果が得られる。Figure 5 shows the exhaust gas characteristics of the product of this example compared to the conventional product, and it can be seen that compared to the conventional product A, the amount of co generated in the product B of this example is extremely small even at an oxygen concentration of 15%. The pores 2a' near the air regulate the air!
Also, the air hole 1 an near the air adjustment plate of the inner flame cylinder 1 is
The opening area can be increased by increasing the pore diameter on each side of each pore, or by increasing the pore density while keeping the pore diameter the same, and the same effect can be obtained with either method. .

また本実施例の燃焼筒では熱透過筒４を突気規制リング
７上に載置して支持するようにしたので、支持部材等を
特別に必要とせず、構成の簡素化が図れる。Furthermore, in the combustion tube of this embodiment, the heat transmission tube 4 is placed on and supported by the air rush regulation ring 7, so that no special support member or the like is required, and the structure can be simplified.

第２図は本発明の他の実施例を示すもので、上記実施例
と異なる点は金気規制リング７全外筒３に一体形成した
ことにあり、空気規制リング用の特別な部品を必要とせ
ず、より一層の簡累化が図れるものである。Fig. 2 shows another embodiment of the present invention, which differs from the above embodiment in that the air regulation ring 7 is integrally formed with the entire outer cylinder 3, requiring special parts for the air regulation ring. This allows for even greater simplification without having to do this.

発明の効果 以上のように本発明は−、内炎筒と外炎筒の、空気規制
リングより下方の気孔の開ロ面積ヲ空気規制リングに近
い方を大きくしてそれより下方を小さくして酸欠時でも
確実に保炎を形成するようにしているので、酸欠時にお
けるｃｏの発生量は極めて少ないものとなり、安全性の
高いものとなる。Effects of the Invention As described above, the present invention is such that the opening area of the pores of the inner flame tube and the outer flame tube below the air regulation ring is made larger on the side closer to the air regulation ring and smaller on the side below it. Since a stable flame is reliably formed even in the case of oxygen deficiency, the amount of coke generated in the case of oxygen deficiency is extremely small, resulting in high safety.

【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おける燻焼筒の要部断面図
、第２図は同地の実施例を示す要部断面図、第３図は従
来の燃焼筒を示す断面図、第４図は同要部の拡大断面図
、第５図は本発明品と従来品の排ガス特性を示すグラフ
である。 １・・・・・内炎筒、２・・・・・・外炎筒、３・・・
・・外筒、４・・・・・熱透過筒、７・・・・・を気規
制リング、Ｉａ、１ａ’１　ｇ＋　、　１　ａｔｔｔ−
＋−・内炎筒の気孔、２”　＋　２　ａ’　１２　ａ”
　＋　２　ａ”・・・・・外炎筒の気孔。 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Fig. 1 is a sectional view of the main part of a smoking pipe according to an embodiment of the present invention, Fig. 2 is a sectional view of the main part showing an embodiment of the present invention, and Fig. 3 is a sectional view showing a conventional combustion pipe. FIG. 4 is an enlarged sectional view of the same essential parts, and FIG. 5 is a graph showing the exhaust gas characteristics of the product of the present invention and the conventional product. 1... Inner flame tube, 2... Outer flame tube, 3...
...Outer cylinder, 4... Heat transmission cylinder, 7... Air regulation ring, Ia, 1a'1 g+, 1 attt-
+-・Inner flame cylinder pores, 2" + 2 a' 12 a"
+ 2 a”...pores in the outer flame tube. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4

Claims (1)

【特許請求の範囲】 （１）　多数の気孔全有する内炎筒及び外炎筒と、上記
外炎筒の下部外周をおおう外筒と、この外筒上部に位置
して外炎筒の上部外周をおおう耐熱性の熱透過筒と、上
記外炎筒と熱透過筒との接合部近傍に外炎筒側に突出さ
せて設けた空気規制リングとを備え、かつ前記外炎筒に
おける空気規制リングより下方の気孔のうち、空気規制
リングに近いて気孔群の開口面積がそれ以外の気孔の開
口面積よりも大きい燃焼筒。 （２）外炎筒は、を気規制リングに対向した直下の気孔
を、下方に比べて数多く密にした特許請求の範囲第１項
に記載の燃焼筒。 （３）外炎筒は、空気規制リングに対向した直下の気孔
を、下方に比べて大きくした特許請求の範囲第１項に記
載の燃焼筒。 ４）熱透過筒は突気規制リング上に載置して支持するよ
うにした特許請求の範囲第１項に記載の燃焼筒。 （５）空気規制リングは外筒に一体形成した特許請求の
範囲第１項、第２項、＄、ｉ４４＊洛第４項に記載の燃
焼筒。[Scope of Claims] (1) An inner flame tube and an outer flame tube having a large number of pores, an outer tube covering the lower outer periphery of the outer flame tube, and an upper outer periphery of the outer flame tube located on the upper part of the outer flame tube. a heat-resistant heat transmitting tube that covers the outer flame tube, and an air regulating ring provided protruding toward the outer flame tube near the joint between the outer flame tube and the heat transmitting tube, and the air regulating ring in the outer flame tube. Among the lower pores, the pore group closer to the air regulation ring has a larger opening area than the other pores. (2) The combustion tube according to claim 1, wherein the outer flame tube has a larger number of air holes directly below the air regulating ring, which are denser than those below. (3) The outer flame tube is a combustion tube according to claim 1, in which the pores directly below the air regulating ring are larger than those below. 4) The combustion tube according to claim 1, wherein the heat transmission tube is placed on and supported by a blast control ring. (5) The combustion cylinder according to Claims 1, 2, and 4, wherein the air regulation ring is integrally formed with the outer cylinder.