JPS5892706A - Liquid fuel combustion apparatus - Google Patents

Abstract

PURPOSE:To decrease generation of stimulative odor and carbon monoxide at the rise time, by positioning the lower part of the outer casing for a wick closer to a main wick than the upper part, and by providing a plurality of breather pores, having a smaller diameter and more number than those in the upper part, to the lower part. CONSTITUTION:The outer casing 13 for a wick is provided opposed to a main wick 14, and the lower part of the outer casing 13 for a wick is positioned closer to the main wick 14 than the upper part. A plurality of breather pores 13a, having a smaller diameter and more number than a plurality of breather pores 13b provided to the upper part of the outer casing 13 for a wick, are provided to the lower part. With such an arrangement, generation of stimulative odor and carbon monoxide at the rise time can be decreased. In addition, rising flames, yellow flames, and the like, can be prevented at the time when combustion rate is lowered, as well as to prevent a red-heated cylinder from being red- heated unevenly, in the titled combustion apparatus.

Description

【発明の詳細な説明】 本発明は、灯芯を有する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 liquid fuel combustion device having a wick.

従来のこの種の液体燃料燃焼装置は、第３図に示すよう
に芯外筒Ａの側壁に多数の空気孔Ｂ、Ｃが設けられ、灯
芯りに対向する空気孔Ｂ、Ｃは共に灯芯りから同一距離
に設けられていた。また定常燃焼中には、空気孔Ｂ、Ｃ
には火炎が保炎されないような空気孔の径、配列および
数に定められていた。この場合、次に列記する問題が生
じていた０ （１）灯芯に着火され、温度・上昇と共に燃焼筒内に上
昇気流が起り、空気孔Ｂ、Ｃから空気が流入して、燃料
Ｑ気ｆヒを促進するが、定常燃焼中の定格燃焼量に見合
う空気量を得るために空気孔Ｂ、Ｃの径および数を定め
て設けておくと、立上り時に空気の流入量が多すぎ、多
量の気「ヒガスを急上昇させ、また火炎も温度の低い燃
焼筒各部に触れ冷却され、刺撤臭および一酸［ヒ戻素を
多量に発生した。In a conventional liquid fuel combustion device of this kind, as shown in Fig. 3, a large number of air holes B and C are provided in the side wall of the outer wick cylinder A, and both air holes B and C facing the wick are connected to the wick. It was placed at the same distance from. Also, during steady combustion, air holes B and C
The diameter, arrangement, and number of air holes were specified so that the flame could not be held. In this case, the following problems occurred: (1) The lamp wick is ignited, and as the temperature rises, an upward airflow occurs inside the combustion cylinder, and air flows in from the air holes B and C, causing the fuel Q However, if the diameter and number of air holes B and C are determined and provided in order to obtain an air amount commensurate with the rated combustion amount during steady combustion, the amount of air flowing in at the time of startup will be too large, and a large amount of air will be generated. The gas rapidly rose, and the flame also cooled as it touched the low-temperature parts of the combustion tube, producing a large amount of stinging odor and monoacid (arsenic acid).

（２）定常燃焼中は、空気孔Ｂ、Ｃは火炎が保炎・され
ないが、立上り時には空気孔Ｂ、Ｃに不規則な火炎が保
炎され、このため燃焼筒上部にある赤熱筒の火炎の保炎
に悪影響を与え、この赤熱筒に赤熱むらが生じやすかっ
た。(2) During steady combustion, the flame is not held in the air holes B and C, but at the time of startup, irregular flames are held in the air holes B and C, which causes the flame in the red-hot cylinder at the top of the combustion cylinder to This had a negative effect on flame retention, and the red-hot cylinder was likely to have uneven red heat.

（３）変質灯油あるいは高沸点成分を含む燃料が使用さ
れ、灯芯りにタール状物質が蓄積し燃焼量が低下すると
、空気孔Ｂ、Ｃは、本来、安定した保炎能力を持たない
ため、不規則な火炎が保炎され、灯芯の局部過熱による
立炎および燃焼室内黄火発生等の現象を起こした。(3) When altered kerosene or fuel containing high boiling point components is used and tar-like substances accumulate in the wick and the combustion rate decreases, air holes B and C do not inherently have stable flame-holding ability. The irregular flame was held, causing phenomena such as standing flames and yellow flames in the combustion chamber due to local overheating of the wick.

本発明は上記従来の欠点を解消するもので、液体燃料燃
焼装置の立上り時の刺激臭および一酸１ヒ炭素の発生を
低減し、また赤熱筒の赤熱むらを防止するとともに燃焼
量低下時の立炎および黄火等を防止することを目的とす
るものである。The present invention eliminates the above-mentioned conventional drawbacks, and reduces the irritating odor and the generation of carbon monoxide and arsenic at the start-up of a liquid fuel combustion device, prevents the unevenness of red heat in the glowing tube, and prevents the generation of carbon dioxide when the combustion amount decreases. The purpose is to prevent standing flames and yellow flames.

本発明は上記目的を達成するために、芯外筒の下部を上
部より主君に近接させ、この下部に複数個の空気孔を上
部の空気孔よりも径、を小さく、数を多く設けたもので
ある。In order to achieve the above object, the present invention has the lower part of the core outer cylinder closer to the master than the upper part, and a plurality of air holes are provided in this lower part with a smaller diameter and larger number than the air holes in the upper part. It is.

この構成によって、芯外筒下部の空気孔は、立上り時に
急激な空気の流入を抑え、燃焼筒の温度上昇と共に徐々
に空気量を増大できるため、刺激臭、−酸化炭素の発生
を減少できる。また、芯外筒下部の空気孔には、火炎が
保炎されにぐいため、不規則な保炎による赤熱筒のムラ
を防止し、燃焼量低下時の不規則な保炎も防止でき局部
的な立炎。With this configuration, the air holes in the lower part of the outer cylinder can suppress the rapid inflow of air at the time of startup, and can gradually increase the amount of air as the temperature of the combustion cylinder rises, thereby reducing the generation of irritating odors and carbon oxides. In addition, the air hole at the bottom of the core outer cylinder makes it difficult to hold the flame, which prevents uneven flame holding due to irregular flame holding, and also prevents irregular flame holding when the combustion rate decreases. A standing flame.

黄火の発生をも防止できる。It can also prevent yellow fire from occurring.

以下、本発明の一実権例について図面に基き説明する。Hereinafter, one practical example of the present invention will be explained based on the drawings.

第１図において、液体燃料燃焼装置を示し、１は燃焼筒
、２は上部に耐熱ガラス等から成る透過筒３を設けた外
筒である。４は金網等から成る赤熱筒で、下部に複数個
の空気孔６ａを有した外炎筒５が設けられ、上部は透過
筒３の上部とリング６を介して接合されて伝る０赤熱筒
４．外炎筒６の内側には複数個の空気孔７ｄを有する内
炎筒７が設けられ、外炎筒６．内炎筒７で燃焼室８が構
成されている。内炎筒７には複数個の通気孔９ａを有す
る天板９が設けられ、天板９の上部には拡炎板１０が設
けられている。また内炎筒７内には複数個の通気孔１１
ａを有する仕切板１１が設けられている。内炎筒７は芯
案内筒１２で支持され、外炎筒６は芯外筒１３で支持さ
れる。芯外筒１３は、主君１４に対向して設けられ、芯
外筒１３の下部は上部よりも主君１４に近接して設けら
れ、芯外筒１３の下部には複数個の空気孔１３ａが設け
られ、′空気孔１３ａは、芯外筒１３の上部に設けられ
た複数個の空気孔１３ｂよりも径が小さく、かつ多数設
けられている０１６は火回り芯、１６は芯抑え金具であ
る。In FIG. 1, a liquid fuel combustion apparatus is shown, and numeral 1 is a combustion tube, and 2 is an outer tube having a transmission tube 3 made of heat-resistant glass or the like on its upper part. Reference numeral 4 denotes a red-hot cylinder made of wire mesh or the like, which is provided with an outer flame cylinder 5 having a plurality of air holes 6a at its lower part, and a red-hot cylinder connected to the upper part of the transmitting cylinder 3 through a ring 6 at its upper part. 4. An inner flame tube 7 having a plurality of air holes 7d is provided inside the outer flame tube 6, and the outer flame tube 6. A combustion chamber 8 is constituted by the inner flame tube 7. The inner flame tube 7 is provided with a top plate 9 having a plurality of ventilation holes 9a, and a flame expansion plate 10 is provided on the top of the top plate 9. In addition, there are a plurality of ventilation holes 11 in the inner flame cylinder 7.
A partition plate 11 having a diameter is provided. The inner flame tube 7 is supported by a core guide tube 12, and the outer flame tube 6 is supported by a core outer tube 13. The outer core cylinder 13 is provided facing the master 14, the lower part of the outer core cylinder 13 is provided closer to the master 14 than the upper part, and the lower part of the core outer cylinder 13 is provided with a plurality of air holes 13a. The air holes 13a are smaller in diameter than the plurality of air holes 13b provided in the upper part of the core outer cylinder 13, and 016, which is provided in large numbers, is a fire wick, and 16 is a wick holding metal fitting.

第２図において、上記実施例の要部拡大断面を示すが芯
外筒１３の下部を上部より主君１４に近接して設けると
ともに複数個の空気孔１３ａを設けているため、液体燃
料燃焼装置の立上り時には、温度上昇とともに徐々に空
気孔１３ａからの空気量が増加し、刺激臭や一酸ｒヒ炭
素の発生を抑制する。FIG. 2 shows an enlarged cross-section of the main part of the above embodiment, and since the lower part of the core outer cylinder 13 is provided closer to the master 14 than the upper part, and a plurality of air holes 13a are provided, the liquid fuel combustion apparatus is At startup, the amount of air from the air holes 13a gradually increases as the temperature rises, suppressing the generation of irritating odors and carbon monooxide and arsenic.

′また芯外筒１３の下部空気孔１３ａを上部空気孔１３
ｂよりも径を小さくしたため、空気孔１３ａからの空気
流速が増し、空気孔１３ａには保炎しなくなり、主君１
４に対して常に均一な分布の安定した空気流を与える。'Also, the lower air hole 13a of the core outer cylinder 13 is connected to the upper air hole 13.
Since the diameter is made smaller than b, the air flow velocity from the air hole 13a increases, the air hole 13a is no longer able to hold the flame, and the master 1
4 to provide a stable air flow with an even distribution at all times.

これに対して芯外筒１３の上部空気孔１３ｂは径が大き
いので、立上り時より安定した保炎が得られ、高沸点成
分を含む燃料使用による燃焼量低下時には、多量の空気
が空気孔１３ｂから流入するため、火炎面が主君１４に
近づき、主君１４の温度を上昇させ、気孔ガス量を増加
させ、燃焼量の低下を防止できる。On the other hand, since the upper air hole 13b of the core outer cylinder 13 has a large diameter, stable flame holding can be obtained from the time of startup, and when the combustion amount decreases due to the use of fuel containing high boiling point components, a large amount of air flows into the air hole 13b. Since the flame flows in from the main body 14, the flame surface approaches the master 14, increases the temperature of the master 14, increases the amount of pore gas, and prevents a decrease in the amount of combustion.

また、芯外筒１３の下部空気孔１３ａは、立上り時、定
常燃焼中、燃焼量低下時にも保炎されないため、空気孔
１３ａの数を増加させて、主君１４に対してより均一な
空気流を与え、かつ多量の気ｒヒガスを得ることができ
る。In addition, the lower air holes 13a of the core outer cylinder 13 do not maintain flame stability even during startup, during steady combustion, and when the combustion amount decreases. It is possible to give a lot of energy and obtain a large amount of energy.

頃上のように、本発明によれば、以下に列記する効果を
奏する。As mentioned above, according to the present invention, the effects listed below are achieved.

（１）芯外筒下部の空気孔は、灯芯に対して保炎されな
い距離にまで近接して設けられているため、通路の抵抗
により、芯外筒の上部の空気孔よりも空気が流入しにぐ
い。このため立上り時の温度上昇に対して急激な空気量
の増大が抑制され、徐々に空気量が増加していくので、
気化ガスの上昇による刺激臭の発生、火炎の急な立上り
による燃焼筒各部からの冷却作用による一酸化炭素の発
生を抑制することが゛できる。(1) The air hole at the bottom of the outer wick tube is located close enough to the wick to prevent flame holding, so due to the resistance of the passage, more air flows in than the air hole at the top of the outer wick tube. Nigui. For this reason, the sudden increase in air volume due to the rise in temperature at startup is suppressed, and the air volume gradually increases.
It is possible to suppress the generation of irritating odor due to the rise of vaporized gas and the generation of carbon monoxide due to the cooling effect from various parts of the combustion tube due to the sudden rise of flame.

（２）芯外筒下部の空気孔は、灯芯に対して設けである
ため、通路の空気流の流速が速く、かつ灯芯に近く気ｒ
ヒガス濃度も濃いため火炎が保炎されない。そのため常
に、安定した空気流が均一的に得られ、立上り時の芯外
筒の不規則な保炎による燃焼筒上部の不均一な保炎によ
る赤熱筒のムラを防止し、燃焼量低下時の芯外筒の不規
則な保炎による灯芯の局部過熱による立炎や黄火を防止
することができる。(2) Since the air hole at the bottom of the wick outer cylinder is provided relative to the lamp wick, the airflow speed in the passage is fast and the airflow is close to the lamp wick.
The flame cannot be held stable due to the high concentration of hygas. Therefore, a stable and uniform air flow is always obtained, preventing uneven flame holding at the top of the combustion cylinder due to irregular flame holding in the core and outer cylinder during startup, and preventing unevenness in the glowing cylinder due to uneven flame holding at the top of the combustion cylinder. It is possible to prevent standing flames and yellow flames due to local overheating of the wick due to irregular flame holding of the wick outer tube.

（３）芯外筒下部から流速の大きい気化ガスが上昇し、
芯外筒の土部で流速を弱められて拡散するため、芯外筒
上部の空気孔からの空気流と効率良く拡散して、良好な
燃焼と保炎を得ることができる。(3) Vaporized gas with a high flow rate rises from the bottom of the core outer cylinder,
Since the flow velocity is weakened and diffused in the earth part of the outer core cylinder, it is efficiently diffused with the air flow from the air hole in the upper part of the outer core cylinder, and good combustion and flame stability can be obtained.

（４）芯外筒下部は灯芯に近接しているため、芯外筒下
部空気孔からの流入した空気は、灯芯に沿って速い流速
で上昇するので、灯芯の気化をより促進することができ
る。(4) Since the lower part of the wick outer cylinder is close to the lamp wick, the air flowing in from the air hole at the lower part of the wick outer cylinder rises at a high flow rate along the wick, which can further promote vaporization of the wick. .

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

第１図は、本発明の一実施例である液体燃料燃焼装置を
示す正面半断面図、第２図は同装置の要部拡大断面図、
第３図は従来の液体燃料燃焼装置の要部拡大断面図であ
る。 ４・・・・・・赤熱筒、６・・・・・会外炎筒、７・・
・・・・内炎筒、１３・・・・・・芯外筒、１３ａ・・
・・・・芯外筒下部の空気孔、１′３ｂ・・・・・・芯
外筒上部の空気孔、１４・・・・・・１芯〇 代理人の氏名　弁理士　中　尾　敏　男　ほか１名１１
８１図 第２図 第３図FIG. 1 is a front half-sectional view showing a liquid fuel combustion device that is an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the main part of the device,
FIG. 3 is an enlarged sectional view of a main part of a conventional liquid fuel combustion device. 4... Red-hot tube, 6... Outer flame tube, 7...
...Inner flame tube, 13...Core outer tube, 13a...
... Air hole at the bottom of the core outer cylinder, 1'3b ... Air hole at the top of the core outer cylinder, 14 ...... 1 core 〇 Name of agent Patent attorney Toshio Nakao et al. 1 person 11
Figure 81Figure 2Figure 3

Claims (2)

【特許請求の範囲】[Claims] （１）液体燃料を気化し燃焼させる主君を有、する灯芯
と、前記灯芯を内側から案内する芯案内筒および外側か
ら案内する芯外筒と、燃焼室省形成しかつ複数の空気孔
を有する内炎筒お゛よび外炎筒とを備え、前記灯芯の主
君に対向する前記芯外筒の上下方向において、下部を上
部より前記主君に近接させて設けるとともに前記上部お
よび下部にそれぞれ複数の空気孔を形成してなる液体燃
料燃焼装置。(1) A lamp wick that has a master that vaporizes and burns liquid fuel, a wick guide tube that guides the wick from the inside, a wick outer tube that guides the wick from the outside, and a combustion chamber that saves the formation and has a plurality of air holes. The wick outer tube is provided with an inner flame tube and an outer flame tube, and in the vertical direction of the wick outer tube facing the master of the wick, a lower part is provided closer to the master than the upper part, and a plurality of air tubes are provided in the upper and lower parts, respectively. A liquid fuel combustion device formed with holes. （２）芯外筒の下部に設けられた空気孔の内径を前記芯
外筒の上部に設けられた空気孔の内径より小さく形成し
てなる前記特許請求の範囲第１項記載の液体燃料燃焼装
置。 （＠　芯外筒の下部に設けられた空気孔の数を前記芯外
筒上部に設けられた空気孔の数より多く設峡てなる前記
特許請求の範囲第１項または第２項記載の液体燃料燃焼
装置。(2) Liquid fuel combustion according to claim 1, wherein the inner diameter of the air hole provided in the lower part of the outer core cylinder is smaller than the inner diameter of the air hole provided in the upper part of the outer core cylinder. Device. (@ The liquid according to claim 1 or 2, wherein the number of air holes provided in the lower part of the outer core cylinder is greater than the number of air holes provided in the upper part of the outer core cylinder. Fuel combustion equipment.