JPS58160716A - Liquid fuel burning device - Google Patents

Abstract

PURPOSE:To contrive the performing of sufficient burning correspond to the change in the amount of burning of the titled device by a method wherein the producing of a yellow flame, a rising flame and the lift of a flame is restrained by means of forming the wall surfaces of the inner and outer cylinders as recess- convex shape in circumferential direction. CONSTITUTION:The recess-convex shape part 13, 14 which is provided on the at least one cylinder either of an inner flame cylinder 7 or an outer flame cylinder 9, is extended to the top of said inner flame cylinder 7 or said outer flame cylinder 9. Thereby, the superficial area of the secondary flame is increased, the superficial area contacting the air is increased, the flame maintaining efficiency is also improved. Accordingly, the flame is stabilized, a yellow flame, a rising flame, and the lift of a flame is restrained, the burning range is extended.

Description

【発明の詳細な説明】 本発明は、家庭における暖房、調理等に用いられる液体
燃料燃焼装置に関し、燃料ガスと空気の伏 混合を櫂進させることにより燃焼を完全に行い未然ガス
による臭気、ＣＯを低減させ、ススの発生を防止するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid fuel combustion device used for home heating, cooking, etc., which completes combustion by pumping a submerged mixture of fuel gas and air, thereby eliminating odors and CO caused by unused gas. This reduces the amount of soot generated and prevents the generation of soot.

従来、主として石油ストーブ等に用いた灯芯バーナは、
燃焼騒音が低く、構成が簡単であり操作が容易であり、
好評を博している。しかし、この場合灯芯の燃焼室への
露出面積や灯芯の燃料吸上げ特性が変化した時、発熱量
が増減し、臭気。Conventionally, the wick burner mainly used for oil stoves etc.
Low combustion noise, simple configuration and easy operation;
It has been well received. However, in this case, when the exposed area of the lamp wick to the combustion chamber or the fuel suction characteristics of the lamp wick change, the amount of heat generated increases or decreases, causing an odor.

ＣＯ，スモークが発生する。また灯芯条件が同じであっ
ても温度により発熱量が増減し、点火後温度上昇と共に
発熱量の増加によりスス、臭気の発生を生じ、使用者が
燃焼火炎を観察して調節していｆｃ。CO and smoke are generated. Furthermore, even if the wick conditions are the same, the amount of heat generated increases or decreases depending on the temperature, and as the temperature rises after ignition, the amount of heat generated increases, resulting in the generation of soot and odor, and the user has to observe and adjust the combustion flame.

なお、灯芯バーナの発熱量の増加による燃焼状態の悪化
は２次火炎の空気と燃料の混合不足による。すなわち灯
芯から蒸発した燃料ガスは、熱ドラフトにより吸引され
た空気と拡散混合し、燃焼を完結する。ところが、発熱
量が増加すると、燃料ガス量が多いため、混合が十分終
らない状態で燃焼室を通過するため、空気不足の未然ガ
スは、黄斑立炎となり、未然ガスによる臭気、ＧＯ，ス
スを発生する。Note that the deterioration of the combustion state due to the increase in the calorific value of the wick burner is due to insufficient mixing of the air and fuel in the secondary flame. That is, the fuel gas evaporated from the wick diffuses and mixes with the air sucked in by the thermal draft, completing combustion. However, when the calorific value increases, the amount of fuel gas is large, so it passes through the combustion chamber before being sufficiently mixed, so the unused gas with insufficient air becomes macular flame, which causes odor, GO, and soot caused by the unused gas. Occur.

本発明は、内炎筒、外炎筒の少くとも一方の壁面を、周
方向に凹凸とすることにより、燃焼室温空気の混合を促
進し、燃焼が十分に行われ、立炎。In the present invention, by making at least one wall surface of the inner flame tube and the outer flame tube uneven in the circumferential direction, mixing of combustion room temperature air is promoted, combustion is sufficiently performed, and a standing flame is produced.

スス、臭気の発生を生じない燃焼範囲の広い液体燃料燃
焼装置を提供するものである。以下本発明の一実施例を
図面を用いて説明する。第１図において、円筒状の灯芯
１は、円筒状の芯数付金具２に取付けて、下部を燃料３
の中に沈設した状態で、内筒４と芯案内筒５により構成
される間隙６を上下に勤〈ように（操作メカは図示せず
）しである。The present invention provides a liquid fuel combustion device that has a wide combustion range and does not generate soot or odor. An embodiment of the present invention will be described below with reference to the drawings. In Fig. 1, a cylindrical lamp wick 1 is attached to a cylindrical wick fitting 2, and the lower part is attached to a fuel 3.
When submerged in the tube, the gap 6 formed by the inner tube 4 and the core guide tube 5 is operated vertically (the operating mechanism is not shown).

間隙６の上部に、略円筒状の内炎筒７、略円筒状の外炎
筒８間により一次燃焼室９が形成され、さらに上記−次
燃焼室９の上部に内炎筒７と赤熱筒１ｏによる赤熱燃焼
室１１が形成され、赤熱筒１ｏの外側に円筒状の透明筒
１２を設けである。Above the gap 6, a primary combustion chamber 9 is formed between a substantially cylindrical inner flame tube 7 and a substantially cylindrical outer flame tube 8, and further above the secondary combustion chamber 9, an inner flame tube 7 and a glowing tube are formed. A red-hot combustion chamber 11 is formed by the red-hot cylinder 1o, and a cylindrical transparent cylinder 12 is provided on the outside of the red-hot cylinder 1o.

内炎筒７の壁面には周方向に凹部１３と凸部１４が形成
されている。そのため凹、凸部１３．１４を設けても一
次燃焼室９および赤熱燃焼室１１の断面積は小さくなら
ず、内炎部子の壁面を燃焼室９．１ｏの中火に位置せし
め、その部分にも多数の小孔を設けである。そして内炎
筒７の表面積は上記凹部１３凸部１４により増加する。A recess 13 and a protrusion 14 are formed in the wall surface of the inner flame cylinder 7 in the circumferential direction. Therefore, even if the concave and convex portions 13.14 are provided, the cross-sectional areas of the primary combustion chamber 9 and the red-hot combustion chamber 11 will not be reduced, and the wall surface of the inner flame element will be located at the medium flame of the combustion chamber 9.1o, There are also many small holes. The surface area of the inner flame tube 7 is increased by the concave portions 13 and convex portions 14.

燃焼用空気は、外筒１６の中を通り、外炎筒８の孔１６
と多孔を有する赤熱体１ｏから一次燃焼室９、赤熱燃焼
室１１に至り、また内炎筒７の孔１６からも一次燃焼室
９内に流入する。Combustion air passes through the outer cylinder 16 and enters the hole 16 of the outer flame cylinder 8.
It reaches the primary combustion chamber 9 and the red-hot combustion chamber 11 from the incandescent body 1o having porous holes, and also flows into the primary combustion chamber 9 through the hole 16 of the inner flame cylinder 7.

次に動作について説明する。灯芯１を上昇させその上部
を一次燃焼室９内に露出させる。燃料３は灯芯１を通り
その先端に毛細管現象により吸上げられる。この状態で
点火ヒータ（図示せず）に通電すると、燃料を十分浸み
込んだ灯芯１の上端で着火が行われ、火回り、燃焼を開
始する。燃焼による高温ガスにより、−次燃焼室９から
赤熱燃焼室１１中に熱ドラフトによる上気流を生じ、−
次燃焼室９へ孔１５がら空気が流入する。そして孔１６
のおのおので保炎し気孔燃焼を行い、その燃焼熱の輻射
により灯芯１から燃料の蒸発が促進される。−次燃焼室
９から赤熱燃焼室１１へ燃料と空気の混合ガス、内炎筒
７の孔１６と赤熱体１０がら空気が吸引される。そして
、その上部で二次炎を形成しこの状態で火炎は安定し良
好な燃焼を行う。−次燃焼室９、赤熱燃焼室１１内の流
れは熱ドラフトによる吸引であることと、流速が０．１
〜０．３　ｍ　／　Ｓと遅いため層流状態であり、灯芯
１で気化した燃料ガスはリング状に一次燃焼室９、赤熱
燃焼室１１の中央を１歿し、この周囲に孔１６と赤熱体
１ｏがら空気が流入する。燃料ガスと空気の混合は、気
孔燃焼による乱れ、排ガス膨張、熱対流、拡散により行
われ、順次燃焼する。Next, the operation will be explained. The lamp wick 1 is raised to expose its upper part into the primary combustion chamber 9. The fuel 3 passes through the wick 1 and is sucked up to its tip by capillary action. When the ignition heater (not shown) is energized in this state, ignition occurs at the upper end of the lamp wick 1, which is sufficiently soaked with fuel, and the flame starts to ignite and burn. The high-temperature gas generated by combustion generates an upper airflow due to a thermal draft from the secondary combustion chamber 9 into the red-hot combustion chamber 11, and -
Air flows into the next combustion chamber 9 through the hole 15 . and hole 16
Each lamp holds its flame and performs stomatal combustion, and the radiation of the combustion heat promotes evaporation of the fuel from the wick 1. - A mixed gas of fuel and air, air from the hole 16 of the inner flame tube 7 and the incandescent body 10 are sucked from the secondary combustion chamber 9 to the incandescent combustion chamber 11 . Then, a secondary flame is formed in the upper part of the flame, and in this state, the flame becomes stable and good combustion occurs. - The flow in the secondary combustion chamber 9 and the red-hot combustion chamber 11 is suction by thermal draft, and the flow velocity is 0.1
The flow rate is slow at ~0.3 m/S, so it is in a laminar flow state, and the fuel gas vaporized in the lamp wick 1 flows through the center of the primary combustion chamber 9 and red-hot combustion chamber 11 in a ring shape, and around this there are holes 16 and red-hot combustion chambers. Air flows into the body 1o. Mixing of fuel gas and air is performed by turbulence due to pore combustion, exhaust gas expansion, thermal convection, and diffusion, and combustion occurs sequentially.

二次炎の黄斑や部分的リフトの原因は、上昇する燃料ガ
スに空気の供給が不十分であることによる。The cause of secondary flame macula and partial lift is due to insufficient air supply to the rising fuel gas.

すなわち、燃焼室中央での燃焼が少ないため燃料ガスの
炭素遊離による黄斑と、燃焼速度の低下による立炎を生
じ、噴出スピードとの平衡がくずれリフトし、未然ガス
、スモークが発生するのであった。燃焼室の中央部にお
ける空気不足を改善するためには、混合を良くすること
と供給空気量を増加させる方法があるが、後者は逆に燃
焼室の側部で燃料不足を生じ、完全燃焼が困難となり　
ａ　ｏ。In other words, because there is little combustion in the center of the combustion chamber, yellow spots occur due to the release of carbon in the fuel gas, and flames occur due to a decrease in combustion speed, which causes the balance with the jet speed to be lost and lifts, resulting in the generation of gas and smoke. . In order to improve the lack of air in the center of the combustion chamber, there are methods to improve the mixing and increase the amount of supplied air, but the latter will conversely cause a fuel shortage in the sides of the combustion chamber, preventing complete combustion. becomes difficult
ao.

臭気、を生じる。そこで流れが層流状態である空気と燃
料ガスの混合を通過抵抗を増加することなく行うため本
実施例は、内炎筒７、外炎筒８の少なくとも一方の壁面
を周方向に凹部１３、凸部１４とし、空気を赤熱燃焼室
１１の中央へ供給し、燃料ガスが燃焼室の側部へ流れる
様に構成しである。Produces an odor. Therefore, in order to mix the air and fuel gas in a laminar flow state without increasing the passage resistance, this embodiment has a recess 13 in the circumferential direction on the wall surface of at least one of the inner flame tube 7 and the outer flame tube 8. The convex portion 14 is configured to supply air to the center of the red-hot combustion chamber 11 and allow fuel gas to flow to the sides of the combustion chamber.

実施例において、内炎筒７を一次燃焼室９、赤熱燃焼室
１ｏに向って凹部１３と凸部１４が交互に設けである。In the embodiment, concave portions 13 and convex portions 14 are alternately provided in the inner flame cylinder 7 toward the primary combustion chamber 9 and the red-hot combustion chamber 1o.

このため、凸部１４の多孔１５から燃焼室９．１１の中
央へ空気が流入し、凹部１３により中央を流れる燃料ガ
スが内炎筒７側に流れを変える。このため燃焼室９．１
１中央に空気が供給され、周辺に燃料ガスが分布するた
め予混合状態が促進され二次燃焼時、空気不足による黄
斑を生じることがなく、また燃焼速度の均一化によりリ
フトを生じることも無い。よって燃焼範囲バーナとなり
、燃焼量が変化しても良好な燃焼を維持できるものであ
る。なお、四部１３、凸部１４は第２図のごとく内、外
炎筒７，８の両方に設けても良い。また第３図に示す様
に、内炎筒Ｔの多孔１６にパイプ１７を嵌合させても良
く、こうすると燃焼室の中央により多く空気が供給でき
、パイプ１７は流れを乱し混合体となるため、よシ燃焼
範囲が拡大される。Therefore, air flows into the center of the combustion chamber 9.11 through the porous holes 15 of the convex portion 14, and the fuel gas flowing through the center is diverted toward the inner flame cylinder 7 side by the concave portion 13. For this reason, the combustion chamber 9.1
1 Air is supplied to the center and fuel gas is distributed around the periphery, which promotes premixing and prevents macular spots due to lack of air during secondary combustion, and also eliminates lift due to uniform combustion speed. . Therefore, it becomes a combustion range burner and can maintain good combustion even if the combustion amount changes. Note that the four parts 13 and the convex parts 14 may be provided on both the inner and outer flame tubes 7 and 8 as shown in FIG. Further, as shown in Fig. 3, a pipe 17 may be fitted into the porous hole 16 of the inner flame tube T. In this way, more air can be supplied to the center of the combustion chamber, and the pipe 17 disturbs the flow and prevents the mixture from flowing. As a result, the combustion range is expanded.

また、内炎筒７、外炎筒９の少なくとも一方に設けた周
方向の凹、凸部１３．１４を上記内炎部子、外炎筒９の
先端まで設けると、２次炎の表面積が増大する。そのた
め、空気と接する面積が増加し、保炎部も長くなるため
火炎は安定し、黄斑立炎、リフトを生じにぐく、燃焼範
囲が広くなる。Furthermore, if the circumferential recesses and protrusions 13 and 14 provided on at least one of the inner flame tube 7 and the outer flame tube 9 are provided up to the tips of the inner flame member and the outer flame tube 9, the surface area of the secondary flame can be increased. increase As a result, the area in contact with air increases and the flame-holding area becomes longer, making the flame more stable, preventing macular flares and lifts, and widening the combustion range.

以上の様に本発明によると、内炎筒、外炎筒の少なくと
も一方の壁面を周方向に凹凸部とすることにより、燃料
ガスと空気の混合を促進させ、空燃比が略均−で、部分
的な燃料過多による黄斑の立炎、火炎のリフトを生じる
ことがなく、燃焼量の変化に対して良好な燃焼を行う燃
焼範囲の広い液体燃料燃焼装置がえられるものである。As described above, according to the present invention, by making the wall surface of at least one of the inner flame tube and the outer flame tube uneven in the circumferential direction, the mixing of fuel gas and air is promoted, and the air-fuel ratio is approximately equal. It is possible to obtain a liquid fuel combustion device that has a wide combustion range and performs good combustion in response to changes in combustion amount without causing macular flare or flame lift due to a partial excess of fuel.

このことは、燃焼量可変幅が拡大し、カロリー調節が可
能となり省エネルギともなり、また密閉室使用時の低酸
素濃度状態においてもリフト失火せず、排ガスも良好に
維持でき、安全性の高いものとなるのである。また凹部
、凸部を設けることにより表面積が増加するため、火炎
面積が増加し分散燃焼となるため燃焼温度が低下し、低
ＮＯＸ化も図れる。This expands the variable range of combustion amount, makes it possible to adjust calories, and saves energy.Also, the lift does not misfire even in low oxygen concentration conditions when used in a closed room, and exhaust gas can be maintained in a good condition, making it highly safe. It becomes something. Furthermore, since the surface area is increased by providing the concave portions and convex portions, the flame area increases and dispersed combustion occurs, which lowers the combustion temperature and reduces NOx.

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

第１図〜第３図はそれぞれ本発明の実施例を示す断面図
である。 １・・・・・・灯芯、７・・・・・・内炎筒、８・・・
・・・外炎筒、９・・・・・・−次燃焼室、１ｏ・・・
・・・赤熱燃焼室、１３・・・・・・凹部、１４・・・
・・・凸部、１６・・・・・・孔、１７・・・・・・パ
イプ。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第１
図 ＠２図 第３図1 to 3 are cross-sectional views showing embodiments of the present invention, respectively. 1...Light wick, 7...Inner flame tube, 8...
...Outer flame tube, 9...-Next combustion chamber, 1o...
... red-hot combustion chamber, 13 ... recess, 14 ...
...Protrusion, 16...hole, 17...pipe. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure @Figure 2 Figure 3

Claims (3)

【特許請求の範囲】[Claims] （１）多孔を有する内炎筒と外炎筒間で燃焼室を形成す
るとともに、燃焼時上記燃焼室中に灯芯の先端を位置さ
せる構成とするとともに、上記内炎筒、外炎筒の少くと
も一方の壁面を周方向に凹凸とした液体燃料燃焼装置。(1) A combustion chamber is formed between the porous inner flame tube and the outer flame tube, and the tip of the wick is positioned in the combustion chamber during combustion. Both are liquid fuel combustion devices in which one wall surface is uneven in the circumferential direction. （２）パイプを内炎筒または外炎筒の壁面に嵌合させて
凸凹を形成した特許請求の範囲第１項記載の液体燃料燃
焼装置。(2) The liquid fuel combustion device according to claim 1, wherein the pipe is fitted onto the wall surface of the inner flame tube or the outer flame tube to form unevenness. （３）内炎筒と外炎筒の少くとも一方の上端部の壁面を
周方向に凹凸とした特許請求の範囲第１項記載の液体燃
料燃焼装置。(3) The liquid fuel combustion device according to claim 1, wherein the wall surface of the upper end of at least one of the inner flame tube and the outer flame tube is uneven in the circumferential direction.