JP4089485B2

JP4089485B2 - Structure of core cylinder of oil combustor

Info

Publication number: JP4089485B2
Application number: JP2003096258A
Authority: JP
Inventors: 幸広小口; 利彦山田; 徹中垣内
Original assignee: 株式会社トヨトミ
Priority date: 2003-03-31
Filing date: 2003-03-31
Publication date: 2008-05-28
Anticipated expiration: 2023-03-31
Also published as: JP2004301443A

Description

【０００１】
【産業上の利用分野】
この発明は、組付けが容易になり、かつ、燃焼を安定して行える石油燃焼器の芯内筒天板の取り付け構造に関するものである。
【０００２】
【従来の技術】
石油燃焼器の芯内筒は一般的に油タンクの底板から連続して円筒状に立設したものであり、その上面には上部の直径が下部よりも細くなる段部が形成され、また、芯内筒の上面に取り付けた芯内筒天板には芯内筒の段部に沿った受部を形成しており、この受部に燃焼筒が載置してある。
【０００３】
また、芯内筒と芯内筒天板の上面には芯内筒の内部と燃焼筒の内部とを連通する開口が設けてあり、芯内筒の内部を上昇する空気が開口を通過して燃焼筒へ供給されて燃焼が行われている。
【０００４】
ところで、芯内筒天板を芯内筒に固定する方法として、従来では芯内筒天板に複数個のツメを設け、このツメのカシメによって固定したり、芯内筒天板と芯内筒とを複数箇所でネジ止めしているものが一般的であった。
【０００５】
上記の構造において、芯内筒天板が傾いて取り付けられたり、偏心して取り付けられたりすると、芯内筒の内部から燃焼筒へ供給される空気量にバラツキが生じ、燃焼筒の空気量の多い部分に炎が偏って立炎したり、空気量の少ない部分では不完全燃焼を起こして悪臭の原因となることがあるので、芯内筒天板は正確に取り付ける必要がある。
【０００６】
【発明が解決しようとする課題】
しかし、芯内筒天板を芯内筒にカシメ固定するものでは、専用の工具を使ってツメを１箇所ずつ順番にカシメる為、カシメ強度にバラツキが生じやすく、芯内筒天板が偏心したり傾いて取り付けられることがある。また、作業中に芯内筒天板を変形させたり、カシメ強度が不十分で簡単に外れてしまう恐れがあり、作業者の熟練を要し、コストアップにつながる要因となっていた。
【０００７】
一方、芯内筒天板と芯内筒とを複数箇所でネジ止めする方法は、カシメ加工に比べて作業性は良いものの、複数箇所でネジ止めを行うので、ネジ止め強度にバラツキが生じて芯内筒天板が傾いて固定されることがある。また、部品点数が増加してコストアップにつながるものであった。
【０００８】
【課題を解決するための手段】
この発明は上記課題を解決するもので、油タンク１の底板１ａから連続する芯内筒２と、油タンク１の上面板１ｂから連続する芯外筒３とで構成する芯収容筒４を設け、芯内筒２と芯外筒３との間隙に芯５を上下動自在に装着し、かつ、芯内筒２の上部には直径を下部より細くする段部２ａを設け、該芯内筒２の上面には芯内筒２とほぼ同じ外径をもつ芯内筒天板６を設け、該芯内筒天板６の外周には内炎筒７と外炎筒８と外筒９とで構成する燃焼筒Ａを載置する受部６ａを芯内筒２の段部２ａに沿って形成し、かつ、芯内筒２及び芯内筒天板６の上面には芯内筒２の内部空間を通過する空気を燃焼筒Ａに供給する開口２ｂ・６ｂを備えた石油燃焼器において、前記芯内筒２の上面中央には周囲に開口２ｂを残しながら上面板２ｃを形成すると共に、前記芯内筒天板６の上面中央には周囲に開口６ｂを残しながら上面板２ｃと係合する固定板６ｃを形成し、該固定板６ｃには外縁から上面板２ｃの周囲を囲むように下方に向けて複数個のガイド６ｄを形成し、該ガイド６ｄが上面板２ｃの外縁に当接して芯内筒天板６を位置決めし、芯内筒２と芯内筒天板６とは上面板２ｃと固定板６ｃの中央でネジ止めして固定したものである。
【０００９】
また、前記芯内筒２と芯内筒天板６は芯内筒天板６の取り付け時に受部６ａが芯内筒２の段部２ａに接触し、固定板６ｂが上面板２ｃに接触しない位置関係にあり、固定板６ｃはネジ止め時に上面板２ｃに密着するものとしたから、芯内筒天板６が傾くことなく確実に固定できる。
【００１０】
更に、前記上面板２ｃは芯内筒２の上面よりも低い位置もしくは高い位置に形成し、固定板６ｃは芯内筒天板６の上面よりも低い位置もしくは高い位置に形成したから、芯内筒２と芯内筒天板６に形成した開口２ｂ・６ｂの開口面積を確保することができ、燃焼の安定性を変えることなく使用できる。
【００１１】
【作用】
この発明では、芯内筒２の上面中央には上面板２ｃを形成し、芯内筒天板６の上面中央には固定板６ｃと固定板６ｃの外縁から下方に向けたガイド６ｄを形成したもので、芯内筒天板６を芯内筒２に取り付ける時は、芯内筒２の上面板２ｃに芯内筒天板６の固定板６ｃを重ねれば、ガイド６ｄが上面板２ｃの外縁に当接して、芯内筒天板６を芯内筒２の中心に位置決めすることができる。
【００１２】
そして、上面板２ｃと固定板６ｃの中央でネジ止めして固定するものであり、この時、芯内筒天板６はガイド６ｄで位置決めされているから、芯内筒２の中心から外れることなく芯内筒２に取り付けることができ、上面板２ｃと固定板６ｃの中央のみでネジ止めすることで芯内筒天板６の周囲にほぼ均一に力がかかり、芯内筒天板６は傾くことなく取り付けることができた。
【００１３】
また、芯内筒天板６を芯内筒２に載せると、最初に受部６ａが段部２ａに接触し、固定板６ｃは上面板２ｃから少し浮いた状態になっており、ネジ止めによって上面板２ｃと固定板６ｃを固定するようにすれば、受部６ａが段部２ａに押し付けられ、芯内筒天板６へ均一に力がかかりやすくなり、芯内筒天板６が傾くことなく芯内筒２に取り付けることができるものである。
【００１４】
更に、上面板２ｃと固定板６ｃは芯内筒２の上面と芯内筒天板６の上面よりも低いもしくは高い位置に形成することで、芯内筒２、芯内筒天板６に形成した開口２ｂ・６ｂの開口面積を確保できるので、芯内筒２と芯内筒天板６の中央に上面板２ｃと固定板６ｃが設けてあっても、燃焼筒Ａに供給される空気が減少することはなく、安定した燃焼ができるものである。
【００１５】
【実施例】
図に示す実施例においてこの発明を説明すると、１は油タンク、１ａは油タンクの底板、１ｂは油タンク１の上面板、２は底板１ａから連続して立設した芯内筒、３は上面板１ｂから連続して立設した芯外筒、４は芯内筒２と芯外筒３とで構成する芯収容筒、５は芯内筒２と芯外筒３の間隙に取り付けた芯であり、芯５は図示しない芯上下装置によって芯収容筒４内を上下動する。
【００１６】
２ａは芯内筒２の上部の直径を下部よりも細くする段部、６は段部２ａによって細くなった芯内筒２の上面に取り付けた芯内筒天板、６ａは芯内筒天板６から連続する芯内筒２の段部２ａに沿った受部、７は内炎筒、８は外炎筒、９は外筒であり、内炎筒７と外炎筒８と外筒９で燃焼筒Ａを構成しており、燃焼筒Ａは受部６ａに載置されている。
【００１７】
２ｂ・６ｂは芯内筒２・芯内筒天板６の上面に形成した開口であり、芯５を芯収容筒４の上部に突出させて点火すると、芯５の下端で吸い上げられた燃料が内炎筒７と外炎筒８の間隙で気化し、芯内筒２の内部を上昇して開口２ｂ・６ｂから内炎筒７内に流入する空気と、外筒９の外部から外炎筒８と外筒９の間隙へ流入する空気とが、内炎筒７と外炎筒８の間隙に供給されて燃焼筒Ａ内で燃焼を行う。
【００１８】
燃焼筒Ａ内で燃焼が行われた時に燃焼筒Ａの熱が直接芯内筒２に伝わると、芯内筒２の表面や芯５が高温になり、燃料の気化が促進されて多量の灯油蒸気が発生し、立炎して燃焼状態を悪化させたり、消火時に芯５の先端の炎が消えにくくなって消火時間が長くなることがあるが、芯内筒天板６によって燃焼筒Ａの熱が芯内筒２に直接伝わらないようにして芯内筒２や芯５の温度上昇を防ぐことができる。
【００１９】
ところで、従来の芯内筒天板６の取り付け構造として、芯内筒天板６から下方に向けてツメを複数箇所形成し、このツメを芯内筒２の開口２ｂの内縁部分に向けて折り曲げることによってカシメ固定する方法がある。
【００２０】
しかし、芯内筒天板６をカシメによって固定するものは、専用の工具を使ってツメを１箇所ずつ手作業でカシメる為に作業性が悪く、カシメ強度にバラツキが生じやすいものであり、カシメ強度にバラツキが生じると芯内筒天板６が傾いたり、偏心して芯内筒２に取り付けられることがあった。また、作業者が不慣れであると的確な作業ができずに芯内筒天板６を変形させたり、カシメ強度が弱すぎて芯内筒天板６が芯内筒２から簡単に外れるといった不具合を発生させる恐れがある。
【００２１】
また、芯内筒２と芯内筒天板６の開口２ｂ・６ｂを設けていない部分の複数箇所でネジ止めによって固定する方法もあり、カシメによって固定するものに比べて取り付け作業は容易で、芯内筒天板６が外れる心配はないが、複数箇所でネジ止めする為、ネジ止め強度にバラツキが生じると芯内筒天板６が傾いて取り付けられてしまうものであった。
【００２２】
そして、芯内筒天板６が傾いて取り付けられると、燃焼筒Ａの下端と芯内筒天板６との間に隙間が生じ、この隙間から燃焼筒Ａに向けて過剰な空気が流入し、燃焼のバランスが崩れて燃焼状態を悪化させる原因となる。
【００２３】
また、芯内筒天板６が偏心して取り付けられると、開口６ｂと燃焼筒Ａの位置が芯内筒２の中心から外れて、芯内筒２の内部から開口２ｂ・６ｂを通過して燃焼筒Ａ内へ供給される空気に偏りが生じ、燃焼筒Ａへ均一に空気が供給できなくなり、空気量が少ない部分では不完全燃焼を起こし、空気量が多い部分では立炎して燃焼状態を悪化させるものであった。
【００２４】
この発明は上記の課題を解決するもので、２ｃは芯内筒２の上面に形成した円板状の上面板、２ｄは上面板２ｃの外縁と開口２ｂの内縁とを結ぶ支持部材であり、上面板２ｃは芯内筒２の上面に形成した開口２ｂの中央に支持部材２ｄを介して芯内筒２と一体に形成している。
【００２５】
６ｃは芯内筒天板６の上面に形成した円板状の固定板、６ｅは固定板６ｃの外縁と開口６ｂの内縁とを結ぶ支持部材であり、固定板６ｃは芯内筒天板６の上面に形成した開口６ｂの中央に支持部材６ｅを介して芯内筒天板６と一体に形成している。６ｄは固定板６ｃの外縁から下方に向けて形成した複数個のガイドであり、前記固定板６ｃは上面板２ｃとほぼ同じ外径をもち、かつ、ガイド６ｄの内縁の径は上面板２ｃの外径にほぼ一致している。
【００２６】
この構造であれば、芯内筒天板６を取り付けるときは、芯内筒天板６の固定板６の中央を芯内筒２の上面板２ｃの中央に合わせるようにして芯内筒２の上面に載せれば、ガイド６ｄの内縁が上面板２ｃの外縁に当接して、固定板６ｃが上面板２ｃの中央に位置決めされるので、芯内筒天板６を芯内筒２の中央に保持することができる。
【００２７】
１０は芯内筒２の上面板２ｃと芯内筒天板６の固定板６ｃの間に挿着する取付ネジ、１０ａは上面板２ｃと固定板６ｃの中央に１箇所形成した取付ネジ１０の取付孔であり、取付ネジ１０を取付孔１０ａに取り付けると、固定板６ｃが上面板２ｃに固着され、芯内筒天板６を芯内筒２に固定することができる。この時、芯内筒天板６はガイド６ｄによって芯内筒２の中央に位置決めされているから、ネジ止め時に芯内筒天板６が移動することはなく、芯内筒天板６を芯内筒２の中央に正確に取り付けることができる。
【００２８】
また、芯内筒天板６を１個の取付ネジ１０によって芯内筒２に固定することによって、従来のカシメによる固定や複数箇所でネジ止めした時のように取り付け強度にバラツキが生じることはなく、芯内筒天板６が傾くことなく正確に取り付けることができるものとなり、また、取り付け後はガイド６ｄによって保持され、取付ネジ１０によって確実に固定されているので、芯内筒天板６がズレたり外れることはない。
【００２９】
また、従来の構造において、製造時の寸法誤差によって芯内筒２や芯内筒天板６に僅かな傾きや歪みが生じると、芯内筒天板６を芯内筒２に正確に取り付けることができなくなり、取り付け後に修正作業が必要になり生産性が悪くなるので、芯内筒２と芯内筒天板６の寸法管理が必要であり、コスト上昇の要因となっていた。
【００３０】
このための対策として、芯内筒天板６の受部６ａから固定板６ｃまでの高さ寸法を、芯内筒２の段部２ａから上面板２ｃまでの高さ寸法よりも長くしており、芯内筒天板６を芯内筒２に載せた時には、ガイド６ｄの内縁が上面板２ｃの外縁に当接して、芯内筒天板６が芯内筒２の中央に位置決めされ、芯内筒２の段部２ａと芯内筒天板６の受部６ａが接触し、固定板６ｃが上面板２ｃから僅かに浮いた状態となるようにしている。
【００３１】
そして、この状態で取付ネジ１０を取付孔１０ａに取り付けて固定板６ｃを上面板２ｃに固着すると、固定板６ｃが上面板２ｃに密着して、芯内筒天板６の全体に下方に向けて均一に力がかかり、既に段部２ａに接触している受部６ａの全体が下方へ押し付けられるから、芯内筒天板６を芯内筒２に載せた時に、芯内筒２や芯内筒天板６の傾きや歪みによって芯内筒２と芯内筒天板６との間に隙間があっても、芯内筒天板６の固定板６ｃと芯内筒２の上面板２ｃを固着した時に修正されるので、芯内筒２と芯内筒天板６の間の隙間や芯内筒天板６の傾きを確実に防ぐことができ、芯内筒２や芯内筒天板６の寸法管理が容易になった。
【００３２】
更に、この発明では芯内筒２の開口２ｂの中央に設けた上面板２ｃを芯内筒２の上面より低い位置に形成すると共に、芯内筒天板６の開口６ｂの中央に設けた固定板６ｃを芯内筒天板６の上面より低い位置に形成したものであり、この発明の実施例を示す図３では、前記支持部材２ｄ・６ｅをそれぞれ上面板２ｃと固定板６ｃ側を下方に傾斜することで、上面板２ｃと固定板６ｃが芯内筒２と芯内筒天板６の上面よりも低い位置に形成されている。
【００３３】
このように、上面板２ｃと固定板６ｃを芯内筒２と芯内筒天板６の上面よりも低い位置に形成することによって、芯内筒２と芯内筒天板６の開口２ｂ・６ｂの開口面積を広くすることができるので、開口２ｂ・６ｂの中央に上面板２ｃと固定板６ｃが設けてあっても、燃焼筒Ａには安定した燃焼を維持するのに十分な空気量を供給することができる。
【００３４】
尚、この発明の実施例では上面板２ｃと固定板６ｃを芯内筒２の上面と芯内筒天板６の上面より低く形成することによって開口２ｂ・６ｂの開口面積を確保しているが、上面板２ｃと固定板６ｃを芯内筒２の上面と芯内筒天板６の上面より高く形成しても上記と同様の効果が得ることができる。
【００３５】
【発明の効果】
以上のように、この発明では芯内筒２の上面中央に上面板２ｃを形成し、芯内筒天板６の上面中央に固定板６ｃを形成し、固定板６ｃには上面板２ｃの外縁を囲むようにガイド６ｄを形成したものであり、ガイド６ｄの内縁と上面板２ｃの外縁が当接して、芯内筒天板６を芯内筒２の中央に容易に位置決めすることができ、芯内筒天板６と芯内筒２は上面板２ｃと固定板６ｃの中央でネジ止めして固定するものとしたから、芯内筒天板６を芯内筒２の中央に正確に取り付けることができるものとなった。
【００３６】
また、芯内筒２の上面板２ｃと芯内筒天板６の固定板６ｃの中央の１箇所でネジ止めすることによって、従来のような取り付け強度にバラツキが生じることはなく、芯内筒天板６を芯内筒２に正確に取り付けることができ、また、作業工程数が減少して作業効率が向上できるものとなった。
【００３７】
また、芯内筒天板６を芯内筒２に載せた時に、芯内筒２の段部２ａと芯内筒天板６の受部６ａが接触し、固定板６ｃと上面板２ｃは接触しない位置関係にして、ネジ止めによって固定板６ｃが上面板２ｃに密着するようにすれば、ネジ止め時に芯内筒天板６の全体に下方に均一に力がかかり、受部６ａの全体が下方に均一に押し付けられ、芯内筒２や芯内筒天板６の傾きや歪みによってできた芯内筒２と芯内筒天板６の間の隙間を無くすことができるので、芯内筒天板６を傾くことなく芯内筒２に取り付けることができ、芯内筒２や芯内筒天板６の寸法管理が容易になりコスト低減を実現できるものとなった。
【００３８】
更に、芯内筒２と芯内筒天板６の上面板２ｃと固定板６ｃを芯内筒２の上面と芯内筒天板６の上面よりも低いもしくは高い位置に形成したものでは、上面板２ｃと芯内筒２の上面の間の開口２ｂと固定板６ｃと芯内筒天板６の上面の間の開口６ｂの開口面積を確保することができたから、開口２ｂ・６ｂの中央に上面板２ｃや固定板６ｃが設けてあっても燃焼筒Ａへ供給する空気量が減少することはなく、燃焼の安定性を変えることなく実現できるものである。
【図面の簡単な説明】
【図１】この発明の実施例を示す石油燃焼器の要部断面図である。
【図２】この発明の実施例の芯内筒天板を芯内筒に取り付ける時の状態を示す要部断面図である。
【図３】この発明の実施例の芯内筒と芯内筒天板の取り付け状態を示しており、芯内筒天板の一部を切欠いた斜視図である。
【符号の説明】
Ａ燃焼筒
１油タンク
１ａ底板
１ｂ上面板
２芯内筒
２ａ段部
２ｂ開口
２ｃ上面板
３芯外筒
４芯収容筒
５芯
６芯内筒天板
６ａ受部
６ｂ開口
６ｃ固定板
６ｄガイド
７内炎筒
８外炎筒
９外筒[0001]
[Industrial application fields]
The present invention relates to a mounting structure for an inner core top plate of an oil combustor that can be easily assembled and can stably perform combustion.
[0002]
[Prior art]
The core cylinder of the oil combustor is generally a cylinder standing upright continuously from the bottom plate of the oil tank, and the upper surface is formed with a step portion whose upper diameter is narrower than the lower portion, The inner cylinder top plate attached to the upper surface of the inner cylinder is formed with a receiving portion along the step of the inner cylinder, and the combustion cylinder is placed on the receiving portion.
[0003]
In addition, the upper surface of the core inner cylinder and the core inner cylinder top plate is provided with an opening that communicates the inside of the core inner cylinder and the inside of the combustion cylinder, and the air rising inside the core inner cylinder passes through the opening. The fuel is supplied to the combustion cylinder and is combusted.
[0004]
By the way, as a method of fixing the core inner cylinder top plate to the core inner cylinder, conventionally, the core inner cylinder top plate is provided with a plurality of claws and fixed by caulking of the claws, or the core inner cylinder top plate and the core inner cylinder. In general, the screw is screwed at multiple locations.
[0005]
In the above structure, when the core cylinder top plate is attached to be inclined or attached eccentrically, the amount of air supplied from the inside of the core cylinder to the combustion cylinder varies, and the amount of air in the combustion cylinder is large. Since the flame is unevenly distributed in the part, or the part with a small amount of air may cause incomplete combustion and cause a bad odor, it is necessary to attach the inner cylinder top plate accurately.
[0006]
[Problems to be solved by the invention]
However, in the case of caulking and fixing the core inner cylinder top plate to the core inner cylinder, the claws are easily caulked one by one using a special tool, so the caulking strength tends to vary and the core inner cylinder top plate is eccentric. It may be attached or tilted. In addition, there is a possibility that the inner cylinder top plate may be deformed during the work, or the caulking strength may be insufficient and easily come off, which requires the skill of the operator and causes an increase in cost.
[0007]
On the other hand, although the method of screwing the core inner cylinder top plate and the core inner cylinder at a plurality of locations is more workable than the caulking process, since the screws are secured at a plurality of locations, the screwing strength varies. The inner core top plate may be tilted and fixed. In addition, the number of parts increases, leading to an increase in cost.
[0008]
[Means for Solving the Problems]
The present invention solves the above-described problem and includes a core housing cylinder 4 constituted by a core inner cylinder 2 continuous from the bottom plate 1 a of the oil tank 1 and a core outer cylinder 3 continuous from the top plate 1 b of the oil tank 1. The core 5 is mounted in the gap between the core inner cylinder 2 and the core outer cylinder 3 so as to be movable up and down, and the upper part of the core inner cylinder 2 is provided with a step 2a whose diameter is smaller than the lower part. 2 is provided with a core-inner cylinder top plate 6 having substantially the same outer diameter as that of the core-inner cylinder 2, and an inner flame cylinder 7, an outer flame cylinder 8, and an outer cylinder 9 are disposed on the outer periphery of the core-inner cylinder top plate 6. Is formed along the stepped portion 2a of the core inner cylinder 2 and the upper surfaces of the core inner cylinder 2 and the core inner cylinder top plate 6 In the oil combustor provided with openings 2b and 6b for supplying air passing through the internal space to the combustion cylinder A, an upper surface plate 2c is formed in the center of the upper surface of the core inner cylinder 2 while leaving an opening 2b in the periphery. In both cases, a fixing plate 6c that engages with the upper surface plate 2c is formed in the center of the upper surface of the inner cylinder top plate 6 while leaving an opening 6b in the periphery, and the fixing plate 6c surrounds the periphery of the upper surface plate 2c from the outer edge. A plurality of guides 6d are formed in the downward direction, the guides 6d abut against the outer edge of the upper surface plate 2c to position the core inner cylinder top plate 6, and the core inner cylinder 2 and the core inner cylinder top plate 6 Is fixed by screwing at the center between the top plate 2c and the fixed plate 6c.
[0009]
Further, when the core inner cylinder top plate 6 is attached, the core inner cylinder 2 and the core inner cylinder top plate 6 have the receiving portion 6a in contact with the step portion 2a of the core inner cylinder 2, and the fixed plate 6b does not contact the upper surface plate 2c. Since the fixing plate 6c is in a positional relationship and is in close contact with the upper surface plate 2c when screwed, the inner core top plate 6 can be reliably fixed without being tilted.
[0010]
Further, since the upper surface plate 2c is formed at a position lower or higher than the upper surface of the core inner cylinder 2, and the fixing plate 6c is formed at a position lower or higher than the upper surface of the core inner cylinder top plate 6, The opening areas of the openings 2b and 6b formed in the cylinder 2 and the inner cylinder top plate 6 can be secured, and can be used without changing the stability of combustion.
[0011]
[Action]
In this invention, the upper surface plate 2c is formed at the center of the upper surface of the core inner cylinder 2, and the fixed plate 6c and the guide 6d directed downward from the outer edge of the fixing plate 6c are formed at the center of the upper surface of the core inner cylinder top plate 6. Therefore, when attaching the core inner cylinder top plate 6 to the core inner cylinder 2, the guide 6d is attached to the upper surface plate 2c if the fixing plate 6c of the core inner cylinder top plate 6 is overlapped with the upper surface plate 2c of the core inner cylinder 2. The core inner cylinder top plate 6 can be positioned at the center of the core inner cylinder 2 in contact with the outer edge.
[0012]
And it fixes by screwing in the center of the upper surface board 2c and the fixed board 6c, and since the core inner cylinder top plate 6 is positioned by the guide 6d, it will remove | deviate from the center of the core inner cylinder 2. FIG. Can be attached to the inner core tube 2 without any restriction, and by screwing only at the center of the upper surface plate 2c and the fixing plate 6c, a force is applied almost uniformly around the inner core tube top plate 6, It was possible to install without tilting.
[0013]
When the core inner cylinder top plate 6 is placed on the core inner cylinder 2, the receiving portion 6a first contacts the stepped portion 2a, and the fixing plate 6c is slightly lifted from the upper surface plate 2c. If the upper surface plate 2c and the fixed plate 6c are fixed, the receiving portion 6a is pressed against the stepped portion 2a, and it becomes easy to apply a force uniformly to the inner core top plate 6, and the inner core top plate 6 tilts. It can be attached to the core cylinder 2 without.
[0014]
Furthermore, the upper surface plate 2c and the fixed plate 6c are formed on the inner core tube 2 and the inner core tube top plate 6 by being formed at positions lower or higher than the upper surface of the core inner tube 2 and the upper surface of the core inner tube top plate 6. Since the opening area of the openings 2b and 6b can be ensured, even if the upper surface plate 2c and the fixed plate 6c are provided in the center of the core inner cylinder 2 and the core inner cylinder top plate 6, the air supplied to the combustion cylinder A can be maintained. There is no decrease, and stable combustion is possible.
[0015]
【Example】
In the embodiment shown in the drawings, the present invention will be described. 1 is an oil tank, 1a is a bottom plate of the oil tank, 1b is an upper surface plate of the oil tank 1, 2 is a core cylinder that is erected continuously from the bottom plate 1a, A core outer cylinder standing upright from the top plate 1b, 4 is a core housing cylinder composed of the core inner cylinder 2 and the core outer cylinder 3, and 5 is a core attached to the gap between the core inner cylinder 2 and the core outer cylinder 3. The core 5 moves up and down in the core housing cylinder 4 by a core lifting device (not shown).
[0016]
2a is a step portion that makes the diameter of the upper portion of the core inner tube 2 thinner than the lower portion, 6 is a core inner tube top plate that is attached to the upper surface of the core inner tube 2 that is made thinner by the step portion 2a, and 6a is a core inner tube top plate. 6, a receiving portion along the step 2a of the core inner cylinder 2 continuing from 6, an internal flame cylinder, 8 an external flame cylinder, 9 an external cylinder, the internal flame cylinder 7, the external flame cylinder 8 and the external cylinder 9 The combustion cylinder A is comprised, and the combustion cylinder A is mounted in the receiving part 6a.
[0017]
2b and 6b are openings formed on the upper surfaces of the core inner cylinder 2 and the core inner cylinder top plate 6. When the core 5 is projected from the upper portion of the core housing cylinder 4 and ignited, the fuel sucked up at the lower end of the core 5 is absorbed. Vaporized in the gap between the inner flame cylinder 7 and the outer flame cylinder 8, rises in the core inner cylinder 2 and flows into the inner flame cylinder 7 from the openings 2 b and 6 b, and the outer flame cylinder from the outside of the outer cylinder 9. The air flowing into the gap between the outer cylinder 9 and the outer cylinder 9 is supplied to the gap between the inner flame cylinder 7 and the outer flame cylinder 8 and burns in the combustion cylinder A.
[0018]
If the heat of the combustion cylinder A is directly transferred to the core inner cylinder 2 when combustion is performed in the combustion cylinder A, the surface of the core inner cylinder 2 and the core 5 become high temperature, and fuel vaporization is promoted to produce a large amount of kerosene. Although steam is generated and flames are generated to deteriorate the combustion state, or the flame at the tip of the core 5 is difficult to be extinguished during fire extinguishing, and the fire extinguishing time may be prolonged. It is possible to prevent the temperature rise of the core inner cylinder 2 and the core 5 by preventing heat from being directly transferred to the core inner cylinder 2.
[0019]
By the way, as a conventional attachment structure of the core inner cylinder top plate 6, a plurality of claws are formed downward from the core inner cylinder top plate 6, and the claws are bent toward the inner edge portion of the opening 2b of the core inner cylinder 2. There is a method of fixing by caulking.
[0020]
However, fixing the inner cylinder top plate 6 by caulking is not easy because the claws are caulked by hand using a dedicated tool, and the caulking strength tends to vary. When the caulking strength varies, the core-in-tube top plate 6 may be tilted or attached eccentrically to the core-inner tube 2. In addition, if the operator is unfamiliar with the core inner cylinder top plate 6 without being able to perform an accurate work, or the caulking strength is too weak, the core inner cylinder top plate 6 can be easily detached from the core inner cylinder 2. May occur.
[0021]
Moreover, there is also a method of fixing by screwing at a plurality of locations where the openings 2b and 6b of the core inner cylinder 2 and the core inner cylinder top plate 6 are not provided, and the mounting work is easier than fixing by caulking, Although there is no fear that the inner cylinder top plate 6 will come off, the inner cylinder top plate 6 is tilted and attached when the screwing strength varies because the screws are fixed at a plurality of locations.
[0022]
When the inner cylinder top plate 6 is attached with an inclination, a gap is formed between the lower end of the combustion cylinder A and the inner cylinder top board 6, and excessive air flows into the combustion cylinder A from this gap. This causes the combustion balance to be lost and the combustion state to deteriorate.
[0023]
Further, when the core inner cylinder top plate 6 is mounted eccentrically, the positions of the opening 6b and the combustion cylinder A deviate from the center of the core inner cylinder 2 and pass through the openings 2b and 6b from the inside of the core inner cylinder 2 for combustion. The air supplied into the cylinder A is biased, and the air cannot be uniformly supplied to the combustion cylinder A. Incomplete combustion occurs in a portion where the air amount is small, and a flame is generated in a portion where the air amount is large. It was something that made it worse.
[0024]
The present invention solves the above problems, 2c is a disk-shaped upper surface plate formed on the upper surface of the core inner tube 2, 2d is a support member that connects the outer edge of the upper surface plate 2c and the inner edge of the opening 2b, The upper surface plate 2c is formed integrally with the inner core tube 2 via a support member 2d at the center of the opening 2b formed on the upper surface of the inner core tube 2.
[0025]
6c is a disk-shaped fixing plate formed on the upper surface of the inner core top plate 6, 6e is a support member that connects the outer edge of the fixing plate 6c and the inner edge of the opening 6b, and the fixing plate 6c is the inner core top plate 6 In the center of the opening 6b formed on the upper surface of the inner core, it is formed integrally with the in-core tube top plate 6 via a support member 6e. Reference numeral 6d denotes a plurality of guides formed downward from the outer edge of the fixed plate 6c. The fixed plate 6c has substantially the same outer diameter as that of the upper surface plate 2c, and the diameter of the inner edge of the guide 6d is equal to that of the upper surface plate 2c. It almost matches the outer diameter.
[0026]
With this structure, when attaching the core inner cylinder top plate 6, the center of the core inner cylinder 2 is arranged so that the center of the fixing plate 6 of the core inner cylinder top plate 6 is aligned with the center of the upper surface plate 2 c of the core inner cylinder 2. If it is placed on the upper surface, the inner edge of the guide 6d abuts on the outer edge of the upper surface plate 2c, and the fixing plate 6c is positioned at the center of the upper surface plate 2c. Can be held.
[0027]
Reference numeral 10 denotes a mounting screw to be inserted between the upper surface plate 2c of the core inner cylinder 2 and the fixing plate 6c of the inner core top plate 6, and 10a denotes a mounting screw 10 formed at one center in the center between the upper surface plate 2c and the fixing plate 6c. When the attachment screw 10 is attached to the attachment hole 10 a, the fixing plate 6 c is fixed to the upper surface plate 2 c, and the in-core tube top plate 6 can be fixed to the in-core tube 2. At this time, since the core inner cylinder top plate 6 is positioned in the center of the core inner cylinder 2 by the guide 6d, the core inner cylinder top plate 6 does not move at the time of screwing. It can be accurately attached to the center of the inner cylinder 2.
[0028]
In addition, by fixing the core inner cylinder top plate 6 to the core inner cylinder 2 with one mounting screw 10, there is a variation in the mounting strength as in the case of fixing by conventional caulking or screwing at a plurality of locations. Therefore, the inner cylinder top plate 6 can be accurately attached without being tilted, and after the attachment, the inner cylinder top plate 6 is held by the guide 6d and securely fixed by the attachment screw 10. Will not slip or come off.
[0029]
Further, in the conventional structure, when a slight inclination or distortion occurs in the core inner cylinder 2 or the core inner cylinder top plate 6 due to a dimensional error during manufacturing, the core inner cylinder top plate 6 is accurately attached to the core inner cylinder 2. Therefore, it is necessary to perform a correction work after installation and the productivity is deteriorated. Therefore, it is necessary to manage the dimensions of the core inner cylinder 2 and the core inner cylinder top plate 6, which causes an increase in cost.
[0030]
As a countermeasure for this, the height dimension from the receiving part 6a of the core inner cylinder top plate 6 to the fixing plate 6c is made longer than the height dimension from the step part 2a of the core inner cylinder 2 to the upper surface plate 2c. When the core inner cylinder top plate 6 is placed on the core inner tube 2, the inner edge of the guide 6d comes into contact with the outer edge of the upper surface plate 2c, and the core inner cylinder top plate 6 is positioned at the center of the core inner cylinder 2, and the core The step portion 2a of the inner cylinder 2 and the receiving portion 6a of the core inner cylinder top plate 6 are in contact with each other so that the fixed plate 6c is slightly lifted from the upper surface plate 2c.
[0031]
In this state, when the attachment screw 10 is attached to the attachment hole 10a and the fixing plate 6c is fixed to the upper surface plate 2c, the fixing plate 6c comes into close contact with the upper surface plate 2c and faces downward to the entire core inner cylinder top plate 6. Force is applied evenly and the entire receiving portion 6a already in contact with the stepped portion 2a is pressed downward, so that when the core-inner cylinder top plate 6 is placed on the core-inner cylinder 2, the core-inner cylinder 2 and the core Even if there is a gap between the core inner cylinder 2 and the core inner cylinder top plate 6 due to the inclination or distortion of the inner cylinder top plate 6, the fixed plate 6c of the core inner cylinder top plate 6 and the upper surface plate 2c of the core inner cylinder 2 Since the correction is made when the core is fixed, the gap between the core inner cylinder 2 and the core inner cylinder top plate 6 and the inclination of the core inner cylinder top plate 6 can be surely prevented. The dimensional management of the plate 6 becomes easy.
[0032]
Further, in the present invention, the upper surface plate 2c provided at the center of the opening 2b of the core inner cylinder 2 is formed at a position lower than the upper surface of the core inner cylinder 2, and the fixing provided at the center of the opening 6b of the core inner cylinder top plate 6 is performed. The plate 6c is formed at a position lower than the upper surface of the inner cylinder top plate 6, and in FIG. 3 showing the embodiment of the present invention, the support members 2d and 6e are respectively placed on the upper plate 2c and the fixed plate 6c side downward. The upper surface plate 2 c and the fixed plate 6 c are formed at positions lower than the upper surfaces of the core inner tube 2 and the core inner tube top plate 6.
[0033]
In this way, by forming the upper surface plate 2c and the fixed plate 6c at a position lower than the upper surfaces of the core inner tube 2 and the core inner tube top plate 6, the openings 2b of the core inner tube 2 and the core inner tube top plate 6 are formed. Since the opening area of 6b can be widened, even if the upper surface plate 2c and the fixed plate 6c are provided in the center of the openings 2b and 6b, the combustion cylinder A has a sufficient amount of air to maintain stable combustion. Can be supplied.
[0034]
In the embodiment of the present invention, the upper surface plate 2c and the fixing plate 6c are formed lower than the upper surface of the core inner cylinder 2 and the upper surface of the core inner cylinder top plate 6 to secure the opening areas of the openings 2b and 6b. Even if the upper surface plate 2c and the fixing plate 6c are formed higher than the upper surface of the core inner cylinder 2 and the upper surface of the core inner cylinder top plate 6, the same effect as described above can be obtained.
[0035]
【The invention's effect】
As described above, in the present invention, the upper surface plate 2c is formed at the center of the upper surface of the core inner cylinder 2, the fixing plate 6c is formed at the center of the upper surface of the core inner cylinder top plate 6, and the outer edge of the upper surface plate 2c is formed on the fixing plate 6c. The guide 6d is formed so as to surround the inner edge of the guide 6d and the outer edge of the upper surface plate 2c abut, so that the inner cylinder top plate 6 can be easily positioned at the center of the core inner cylinder 2. Since the core inner cylinder top plate 6 and the core inner cylinder 2 are fixed by screwing at the center of the upper surface plate 2c and the fixing plate 6c, the core inner cylinder top plate 6 is accurately attached to the center of the core inner cylinder 2. It became something that could be done.
[0036]
Further, by screwing at one central position between the upper surface plate 2c of the core inner cylinder 2 and the fixing plate 6c of the core inner cylinder top plate 6, there is no variation in the mounting strength as in the prior art, and the core inner cylinder The top plate 6 can be accurately attached to the core inner cylinder 2, and the number of work steps can be reduced to improve work efficiency.
[0037]
Further, when the core inner cylinder top plate 6 is placed on the core inner cylinder 2, the step portion 2a of the core inner cylinder 2 and the receiving portion 6a of the core inner cylinder top plate 6 are in contact with each other, and the fixed plate 6c and the upper surface plate 2c are in contact with each other. If the fixing plate 6c is brought into close contact with the upper surface plate 2c by screwing, the force is uniformly applied downward to the entire core inner cylinder top plate 6 at the time of screwing, and the entire receiving portion 6a is Since the gap between the core inner cylinder 2 and the core inner cylinder top plate 6 formed by the inclination and distortion of the core inner cylinder 2 and the core inner cylinder top plate 6 can be eliminated evenly pressed downward, the core inner cylinder The top plate 6 can be attached to the core inner tube 2 without tilting, and the dimensional management of the core inner tube 2 and the core inner tube top plate 6 is facilitated to realize cost reduction.
[0038]
Further, in the case where the core inner cylinder 2, the upper surface plate 2c of the core inner cylinder top plate 6 and the fixing plate 6c are formed at positions lower or higher than the upper surface of the core inner tube 2 and the upper surface of the core inner cylinder top plate 6, Since the opening area of the opening 2b between the face plate 2c and the upper surface of the core inner cylinder 2 and the opening 6b between the fixed plate 6c and the upper surface of the core inner cylinder top plate 6 can be secured, the center of the openings 2b and 6b can be secured. Even if the upper surface plate 2c and the fixed plate 6c are provided, the amount of air supplied to the combustion cylinder A does not decrease, and can be realized without changing the stability of combustion.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part of an oil combustor showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view of an essential part showing a state when the core inner cylinder top plate according to the embodiment of the present invention is attached to the core inner cylinder.
FIG. 3 is a perspective view showing a state in which the core inner cylinder and the core inner cylinder top plate according to the embodiment of the present invention are attached, with a part of the core inner cylinder top plate cut away.
[Explanation of symbols]
A Combustion cylinder 1 Oil tank 1a Bottom plate 1b Top plate 2 Core inner cylinder 2a Step 2b Opening 2c Top plate 3 Core outer cylinder 4 Core accommodating cylinder 5 Core 6 Core inner cylinder top plate 6a Receiving part 6b Opening 6c Fixed plate 6d Guide 7 Inner flame cylinder 8 Outer flame cylinder 9 Outer cylinder

Claims

A core housing cylinder 4 comprising a core inner cylinder 2 continuous from the bottom plate 1 a of the oil tank 1 and a core outer cylinder 3 continuous from the upper surface plate 1 b of the oil tank 1 is provided, and the core inner cylinder 2 and the core outer cylinder 3 are provided. The core 5 is mounted in the gap between the two so as to be movable up and down.
In addition, a step 2a having a diameter smaller than that of the lower portion is provided at the upper portion of the inner core tube 2, and an inner core top plate 6 having the same outer diameter as that of the inner core tube 2 is provided on the upper surface of the inner core tube 2. In the outer periphery of the core inner cylinder top plate 6, a receiving part 6 a for placing the combustion cylinder A composed of the inner flame cylinder 7, the outer flame cylinder 8 and the outer cylinder 9 is provided along the step 2 a of the core inner cylinder 2. Formed,
And in the oil combustor provided with openings 2b and 6b for supplying the air passing through the inner space of the core inner cylinder 2 to the combustion cylinder A on the upper surfaces of the core inner cylinder 2 and the core inner cylinder top plate 6,
In the center of the upper surface of the core inner cylinder 2, an upper surface plate 2c is formed while leaving an opening 2b around the periphery,
A fixing plate 6c that engages with the upper surface plate 2c is formed in the center of the upper surface of the inner cylinder top plate 6 while leaving an opening 6b in the periphery, and the fixing plate 6c surrounds the periphery of the upper surface plate 2c from the outer edge. A plurality of guides 6d are formed facing downward,
The guide 6d contacts the outer edge of the upper surface plate 2c to position the core inner cylinder top plate 6, and the core inner tube 2 and the core inner tube top plate 6 are screwed at the center between the upper surface plate 2c and the fixing plate 6c. A structure of an inner cylinder of an oil combustor characterized by being fixed.

The core inner cylinder 2 and the core inner cylinder top plate 6 have a positional relationship in which the receiving portion 6a contacts the stepped portion 2a of the core inner cylinder 2 and the fixing plate 6c does not contact the upper surface plate 2c when the core inner cylinder top plate 6 is attached. The structure of the inner cylinder of the oil combustor according to claim 1, wherein the fixing plate 6c is in close contact with the upper surface plate 2c when screwed.

The upper surface plate 2c is formed at a position lower or higher than the upper surface of the core inner cylinder 2, and the fixing plate 6c is formed at a position lower or higher than the upper surface of the core inner cylinder top plate 6. Item 2. The structure of the inner cylinder of the oil combustor according to Item 1.