JPH01121605A - Combustion equipment - Google Patents
Combustion equipmentInfo
- Publication number
- JPH01121605A JPH01121605A JP28000287A JP28000287A JPH01121605A JP H01121605 A JPH01121605 A JP H01121605A JP 28000287 A JP28000287 A JP 28000287A JP 28000287 A JP28000287 A JP 28000287A JP H01121605 A JPH01121605 A JP H01121605A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- tube
- air
- flow
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 113
- 239000000446 fuel Substances 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 abstract description 44
- 239000000567 combustion gas Substances 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 230000008016 vaporization Effects 0.000 abstract description 2
- 241000721047 Danaus plexippus Species 0.000 description 15
- 241000217776 Holocentridae Species 0.000 description 7
- 206010021143 Hypoxia Diseases 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 244000070969 koal Species 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Wick-Type Burners And Burners With Porous Materials (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は家庭用の暖房等に用いられている燃焼装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a combustion device used for home heating and the like.
従来の技術
従来、この種の燃焼装置としては石油ストーブ等に用い
られている吸上げ気化方式の燃焼装置がある。これは第
５図に示す様に、多数の空気孔を有する内炎筒５１と外
炎筒５２間の燃焼室５３に燃料供給部である灯芯５４先
端を露出させて燃料を気化、燃焼させるようになってい
る。そして通常外炎筒５２は外筒５５の絞り部５５−よ
り上方では開口面積の大きな透孔５６膳を有した赤熱部
５６を形成しており、灯芯５４から気化した燃料と透孔
５６−から燃焼室５３内に導入した空気を混合して燃焼
させ、赤熱部５６を赤熱させ、輻射熱を得ていた。2. Description of the Related Art Conventionally, as this type of combustion device, there is a suction vaporization type combustion device used in kerosene stoves and the like. As shown in FIG. 5, the tip of the wick 54, which is a fuel supply section, is exposed in a combustion chamber 53 between an inner flame tube 51 and an outer flame tube 52, which have a large number of air holes, to vaporize and burn the fuel. It has become. Normally, the outer flame cylinder 52 forms a red-hot part 56 having 56 through holes with a large opening area above the constricted part 55- of the outer cylinder 55, and the fuel vaporized from the wick 54 and the through holes 56- are formed. The air introduced into the combustion chamber 53 was mixed and combusted, causing the red-hot section 56 to become red-hot to obtain radiant heat.
発明が解決しようとする問題点
しかしながら、上記従来の構成では次のような問題を生
じていた。すなわち第５図において、通常、強燃焼時で
は図に示す様に内炎筒５１と外炎筒５２との間の上方に
二次炎ｆ１を形成し、燃焼室５３内を上昇してきた未燃
成分を完全に燃焼させるので良好な特性を示す。しかし
、灯芯５４の露出高さを低くして燃焼量を小さ（した弱
燃焼の場合、火炎は燃焼室５３内に下がってｆ２の様に
形成される。この場合の空気の流れを実線矢印で、また
未燃ガスの流れを破線矢印で示すが、不完全燃焼状態の
未燃ガスは燃焼室５３から外炎筒５２外方の空気通路５
７へ洩出する流れ５８と、燃焼室５３から内炎筒５１内
部へ洩出する流れ５９とになる。このうち流れ５８は赤
熱部５６の透孔５６ｍの開孔率が大きいために燃焼室５
３へ再流入しやす（、火炎ｆ２で燃焼されるので弱燃焼
時、外炎筒５２上方では未燃ガス成分は少なくなる。Problems to be Solved by the Invention However, the above conventional configuration has caused the following problems. That is, in FIG. 5, normally during strong combustion, a secondary flame f1 is formed above between the inner flame tube 51 and the outer flame tube 52 as shown in the figure, and the unburned flames rising inside the combustion chamber 53. It shows good characteristics because the components are completely burned. However, in the case of weak combustion in which the exposed height of the lamp wick 54 is lowered to reduce the amount of combustion, the flame descends into the combustion chamber 53 and is formed as shown by f2.The air flow in this case is shown by the solid line arrow. , the flow of unburned gas is shown by a broken line arrow, and unburned gas in an incompletely combusted state flows from the combustion chamber 53 to the air passage 5 outside the outer flame tube 52.
7, and a flow 59 leaking from the combustion chamber 53 into the inner flame tube 51. Of these, the flow 58 is caused by the large porosity of the through-holes 56m in the red-hot part 56.
3 (because it is combusted by the flame f2, the unburned gas component is reduced above the outer flame tube 52 during weak combustion).
ところが、流れ５９は内炎筒５１の空気孔の開孔率が小
さ（抵抗が大きいために、燃焼室５３に再流入しにくく
、内炎筒５１の上方の空気孔６０や、内炎筒の頂部にあ
る通気孔６１から高濃度のＣＯを含んだ未燃ガスが大気
中に放出されてしまう。However, the flow 59 has a small aperture ratio (high resistance) of the air holes in the inner flame tube 51, so it is difficult to flow back into the combustion chamber 53, and the flow 59 is difficult to flow into the combustion chamber 53 through the air holes 60 above the inner flame tube 51 or the air holes in the inner flame tube. Unburnt gas containing a high concentration of CO is released into the atmosphere from the vent hole 61 at the top.
そのため、弱燃焼においては排ガス特性（Ｇｏ／Ｃ０２
）が急激に悪化してしまい、それがために燃焼量調節巾
を広くすることができなかった。Therefore, in weak combustion, the exhaust gas characteristics (Go/C02
) deteriorated rapidly, which made it impossible to widen the combustion amount adjustment range.
本発明はこのような点に鑑みてなしたもので、燃焼量を
絞ったときの排ガス特性の急激な悪化を抑止して、燃焼
量調節巾の広い燃焼装置を得ることを目的としたもので
ある。The present invention has been made in view of these points, and aims to prevent the rapid deterioration of exhaust gas characteristics when the combustion amount is reduced, and to obtain a combustion device with a wide range of combustion amount adjustment. be.
問題点を解決するための手段
・上記問題点を解決するために本発明の燃焼装置では、
内炎筒内方に燃料供給部に対向する位置近傍から上方へ
伸び、前記内炎筒との間に形成される王制流域を底面で
略遮蔽する制流筒と、前記制流筒内方に配され前記制流
筒より上方まで伸び、前記内炎筒との間に王制流域を形
成する空気制流筒を設けている。Means for Solving the Problems In order to solve the above problems, the combustion device of the present invention includes the following:
a flow restriction tube that extends upward from near a position facing the fuel supply section inwardly of the inner flame tube, and substantially shields a monarch region formed between the inner flame tube and the flow restriction tube with a bottom surface; An air flow restriction tube is provided, which extends above the flow restriction tube and forms a dominant flow area between the inner flame tube and the inner flame tube.
作 用
本発明は上記した構成により、王制流域に未燃ガスを導
入し、この未燃ガスを制流筒と空気制御筒の間を上昇し
、制流筒上方に供給される清浄な空気により混合しなが
ら燃焼室に供給し、燃焼を促進させる。また王制流域の
作用にて燃焼が完結せず王制流域に侵入した未燃ガスに
ついても、空気制御筒内方を上昇し、空気制御筒上方の
通気部に供給される清浄な空気により混合しながら集中
的に燃焼室へ供給され燃焼を促進される。すなわち内炎
筒内方へ浪人したＣＯを含んだ未燃ガスはほとんどが燃
焼室に再流入して燃焼してしまうことになり、広範囲の
燃焼量調節に対して排ガス特性を良好に保つことができ
る。また、酸欠状態により、空気を求め燃焼室の上方へ
移った火炎に対しても、王制流域に清浄な空気を集中的
に供給でき排ガス特性を良好なものとすることができる
。Effect of the present invention With the above-described configuration, unburned gas is introduced into the control region, the unburnt gas is raised between the flow restriction tube and the air control tube, and is purified by the clean air supplied above the flow restriction tube. Supplied to the combustion chamber while mixing to promote combustion. In addition, unburned gas that has not completed combustion due to the action of the monarch region and has entered the monarch region rises inside the air control cylinder and is mixed by the clean air supplied to the ventilation section above the air control cylinder. It is intensively supplied to the combustion chamber to promote combustion. In other words, most of the unburned gas containing CO that has flowed inward into the inner flame cylinder will re-enter the combustion chamber and be burned, making it difficult to maintain good exhaust gas characteristics over a wide range of combustion amount adjustments. can. In addition, clean air can be intensively supplied to the main flow area to improve exhaust gas characteristics even for flames that move upwards in the combustion chamber in search of air due to oxygen deficiency.
実施例
以下本発明の実施例を添付図面に基づいて説明する第１
図、第２図において第１図は強燃焼、第２図は弱燃焼の
状態を示す。第１図、第２図中１は燃料供給部である灯
芯で、芯内筒２と芯外筒３の間に上下動自在に設定され
ている。芯内筒２と芯外筒３の上端部はそれぞれ内火皿
４、外火皿５を形成しており、内炎筒６、外炎筒７が載
置されている。灯芯１の先端は燃焼時には内炎筒６と外
炎筒７間に形成される燃焼室８内に露出され、ここで燃
焼の気化が行われる。９は外筒で、内炎筒６、外炎筒７
、外筒９は内方より順次略同心状に配置され固定ピン１
．０によって一体化されている。Examples Below, the first example of the present invention will be explained based on the accompanying drawings.
In FIGS. 1 and 2, FIG. 1 shows a state of strong combustion, and FIG. 2 shows a state of weak combustion. Reference numeral 1 in FIGS. 1 and 2 indicates a lamp wick, which is a fuel supply section, and is set between an inner wick tube 2 and an outer wick tube 3 so as to be vertically movable. The upper ends of the inner core tube 2 and the outer core tube 3 form an inner flame tray 4 and an outer flame tray 5, respectively, on which an inner flame tube 6 and an outer flame tube 7 are placed. During combustion, the tip of the wick 1 is exposed in a combustion chamber 8 formed between an inner flame tube 6 and an outer flame tube 7, where combustion is vaporized. 9 is the outer cylinder, inner flame cylinder 6, outer flame cylinder 7
, the outer cylinder 9 is arranged approximately concentrically from the inside, and the fixing pin 1
．． unified by 0.
１１は内炎筒６および外炎筒７に多数設けられた空気孔
である。１２は内炎筒６の上端開口部を閉塞する内炎筒
天板で、内炎筒６内方から上方へ通じる開孔部１３を有
している。１４は内炎筒天板１２上に載置された拡炎板
である。外筒９の上端には絞り部１５が形成され、さら
にこの絞り部１５より上方の外炎筒７には赤熱部１６が
形成され、開口の大きな透孔１７が設けられている。Reference numeral 11 indicates a large number of air holes provided in the inner flame tube 6 and the outer flame tube 7. Reference numeral 12 denotes an inner flame tube top plate that closes the upper end opening of the inner flame tube 6, and has an opening 13 that communicates upward from the inside of the inner flame tube 6. 14 is a flame expansion plate placed on the top plate 12 of the inner flame tube. A constriction part 15 is formed at the upper end of the outer cylinder 9, and a glowing part 16 is formed in the outer flame cylinder 7 above the constriction part 15, and a through hole 17 with a large opening is provided.
１８はガラス等の透過性材料よりなる透過筒で、外筒９
上に載置されている。１９はトップフレームで、赤熱部
１６と透過筒１８の間の空気通路２０の上端を遮蔽する
ように赤熱部１６の上端に載置され、透過筒１８を固定
している。２１は内炎筒６内方に設置された制流筒で、
灯芯１先端に対向する位置近傍から上方へ伸び、内炎筒
６との間に形成される王制流域２２ｍをその底面で略遮
蔽する様に設けである。２３は制流筒２１の内方に設置
された空気制御筒であり、前記制流筒２１の上端部より
上方まで伸ばされており、内炎筒６との間に王制流域２
２ｂが形成されている。２５は制流筒２１と空気制御筒
２３の間に形成される空気制御域、２６は空気制御筒２
２内方にある空気導入域である。２７は燃焼制御筒で、
外炎筒気孔部２８内方上部に設定され、上端は外筒９の
絞り部１５に対向する位置近傍まで伸び、気孔部２８と
の間に空気室２９が形成されている。２９１は燃焼制御
筒２４壁面に設けられた連通孔で、空気室２９と燃焼室
８を連通ずるとと（多数均一に設けられている。18 is a transparent tube made of a transparent material such as glass, and the outer tube 9
is placed on top. A top frame 19 is placed on the upper end of the red-hot part 16 so as to cover the upper end of the air passage 20 between the red-hot part 16 and the transmission cylinder 18, and fixes the transmission cylinder 18. 21 is a flow control tube installed inside the inner flame tube 6,
It extends upward from the vicinity of the position facing the tip of the lamp wick 1, and is provided so as to substantially shield the royal basin 22m formed between it and the inner flame tube 6 with its bottom surface. Reference numeral 23 denotes an air control tube installed inside the flow control tube 21, which extends upward from the upper end of the flow control tube 21, and has a monarch flow region 2 between it and the inner flame tube 6.
2b is formed. 25 is an air control area formed between the flow control tube 21 and the air control tube 23; 26 is the air control tube 2;
2. This is the air introduction area located inward. 27 is a combustion control tube,
It is set at the inner upper part of the outer flame cylinder air hole part 28, and the upper end extends to the vicinity of the position facing the throttle part 15 of the outer cylinder 9, and an air chamber 29 is formed between it and the air hole part 28. Reference numeral 291 denotes communication holes provided in the wall surface of the combustion control cylinder 24, which communicate the air chamber 29 and the combustion chamber 8 (a large number of them are uniformly provided).
上記構成において灯芯１に点火すると燃焼開始し、燃焼
による高温の燃焼ガスが燃焼室８を上昇することにより
熱ドラフトを生じ、燃焼に必要な空気が内炎筒６、外炎
筒７の空気孔１１および赤熱部１６の透孔１７より燃焼
室８内に供給され燃焼が継続される。In the above configuration, when the lamp wick 1 is ignited, combustion starts, and high-temperature combustion gas due to combustion rises in the combustion chamber 8, creating a thermal draft, and the air necessary for combustion is supplied to the air holes in the inner flame tube 6 and outer flame tube 7. 11 and the through hole 17 of the red-hot part 16 into the combustion chamber 8, and combustion continues.
このとき内炎筒６内方から供給される空気は、制流筒２
１下方から灯芯１近傍に供給される空気流２９と、制流
筒２１と空気制御筒２３の間に形成される空気制御域２
５を上昇する空気流３０、空気導入域２６を上昇する空
気流３１に分けられる。空気導入域２６を上昇した空気
流３１は内炎筒６上方に達し、空気流３２の様に空気孔
１１や開孔部１３より燃焼室８およびその上方へ供給さ
れる。また一部は空気流３３の様に王制流域２２ｂを下
降し、比較的下方の空気孔１１からも燃焼室８に供給さ
れる。空気制御域２５を上昇する空気流３０についても
同様に、王制流域２２ｂに供給される空気流３４と王制
流域２２−を下降する空気流３５に分かれ、燃焼室８に
供給される。At this time, the air supplied from inside the inner flame tube 6 is transferred to the flow control tube 2.
1 An air flow 29 supplied from below to the vicinity of the lamp wick 1 and an air control area 2 formed between the flow control tube 21 and the air control tube 23
5 is divided into an air flow 30 that ascends, and an air flow 31 that ascends the air introduction region 26. The air flow 31 that has ascended through the air introduction region 26 reaches above the inner flame cylinder 6, and is supplied to the combustion chamber 8 and above it through the air holes 11 and the openings 13 like the air flow 32. In addition, a part of the air flows downward through the royal region 22b like the air flow 33, and is also supplied to the combustion chamber 8 from the air holes 11 located relatively below. Similarly, the air flow 30 ascending through the air control region 25 is divided into an air flow 34 supplied to the monarch region 22b and an air flow 35 descending through the monarch region 22-, which are then supplied to the combustion chamber 8.
一方気化された燃料は空気との混合ガスとなって主とし
て燃焼室８を上昇する。しかし、空気流３４によって王
制流域２２ｂは負圧になるため未燃ガスの一部は王制流
域２２ｂに浪人する流れ３６を生じる。しかしながら、
この未燃ガスは空気制御域２５を上昇してきた空気流３
５と混合され、燃焼室８へ供給される流れ３７となる。On the other hand, the vaporized fuel becomes a mixed gas with air and mainly ascends through the combustion chamber 8. However, since the air flow 34 creates a negative pressure in the monarch region 22b, a portion of the unburned gas generates a flow 36 flowing into the monarch region 22b. however,
This unburned gas is transferred to the air flow 3 that has ascended through the air control area 25.
5 to form a stream 37 that is fed to the combustion chamber 8.
また、王制流域２２−で燃焼室８に供給されなかった未
燃ガスは、内炎筒６上方での空気流３２．３３にて燃焼
室８へ供給される。そのため、強撚焼時には内炎筒６上
端付近に未燃ガスと空気を良好に混合した状態で燃焼室
８上端付近に供給するので、領域Ａで効率良（燃焼させ
、さらにここで燃焼しきれなかった未燃ガスは上方に形
成される火炎ｆ。Further, unburned gas that is not supplied to the combustion chamber 8 in the monarch flow region 22- is supplied to the combustion chamber 8 through the air flow 32, 33 above the inner flame tube 6. Therefore, during strong twist firing, unburned gas and air are supplied near the top of the inner flame tube 6 in a well-mixed state to the top of the combustion chamber 8. The remaining unburnt gas forms a flame f.
で燃焼される。ただし、強燃焼における排ガス特性（Ｃ
ｏ／Ｃ０２）は従来の燃焼装置でも良好であったので、
この発明により特に良好となることはなく、従来と変わ
らないと言える。is burned. However, the exhaust gas characteristics in strong combustion (C
o/C02) was good even with the conventional combustion device, so
It can be said that this invention does not particularly improve the performance and is no different from the conventional one.
次に灯芯１の露出高さを低くして弱燃焼としていくと、
第２図に示すように火炎は次第に燃焼室８内に落ち込み
、火炎ｆ、となる。この場合の流れも強撚焼時と同様で
あるが、気化ガスは大巾に減少しているので王制流域２
２ｍに浪人する未燃ガス量も減少する。従って空気流３
４．３５との混合領域は下方へ下がり、領域Ｂ付近で良
好な混合領域となり、この部分で保炎を形成し、内炎筒
６壁面を赤熱させ、燃焼を促進させ、さらにその上方に
形成される火炎ｆ３で燃焼を完結させる。Next, by lowering the exposed height of wick 1 to achieve weak combustion,
As shown in FIG. 2, the flame gradually falls into the combustion chamber 8 and becomes a flame f. The flow in this case is the same as in the case of strong twist firing, but since the vaporized gas has decreased significantly, the flow in the monarchy region 2
The amount of unburned gas flowing into the 2m area also decreases. Therefore air flow 3
The mixing region with 4.35 moves downward, and becomes a good mixing region near region B, forming a flame holding state in this region, making the wall of the inner flame cylinder 6 red hot, promoting combustion, and further forming above it. The combustion is completed with the flame f3.
すなわち、本発明では清浄な空気流３４．３５によって
王制流域２２ｍに導入された未燃ガスのほとんどが燃焼
室８内に供給され、火炎ｆ、で燃焼されるので、火炎ｆ
、より上方に対向する内炎筒６内部では未燃ガス成分は
ほとんどな（、火炎ｆ。That is, in the present invention, most of the unburned gas introduced into the royal flow area 22m by the clean air flow 34.35 is supplied into the combustion chamber 8 and is combusted by the flame f.
, there is almost no unburnt gas component inside the inner flame cylinder 6 facing upward (, flame f).
より上方の空気孔１１や開孔部１３から排出される空気
は清浄で排ガス特性は良好となる。特に弱燃焼時′には
前述したように王制流域２２−に浪人する未燃ガス量も
少ないので、王制流域２２−で燃焼を完結することがで
き、王制流域２２ｂに未燃ガスが流れることはほとんど
ない。また、たとえ、王制流域２２ｍで完結しなくても
、強撚焼時で述べたと同様に、王制流域２２ｂにて空気
流３３にて燃焼を完結することができるので排ガス特性
は良好となる。ちなみに内炎筒６の内方上端部付近のＣ
Ｏ濃度を測定すると、従来例では１α℃ｐｐｍ以上もあ
ったものが、本実施例では３０〜５０ｐｐｍ程度で従来
例に比し大巾に減少していた。The air discharged from the upper air holes 11 and the openings 13 is clean and has good exhaust gas characteristics. Especially during weak combustion, as mentioned above, the amount of unburned gas flowing into the monarch basin 22- is small, so combustion can be completed in the monarch basin 22-, and unburned gas will not flow into the monarch basin 22b. rare. Further, even if the combustion is not completed in the monarch region 22m, the combustion can be completed in the king region 22b with the air flow 33, as described in the case of hard twist firing, so that the exhaust gas characteristics are good. By the way, C near the inner upper end of the inner flame tube 6
When the O concentration was measured, in the conventional example, it was 1 α° C. ppm or more, but in this example, it was about 30 to 50 ppm, which was significantly reduced compared to the conventional example.
特に本実施例においては内炎筒６の内方に制流筒２１と
空気制御筒２２を設け、強撚焼時には空気制御域２５を
上昇する空気流３０により、王制流域２２ｂにて内炎筒
６側の空気孔１１にて十分に燃焼させることができるの
で、火炎ｆ、を短炎化することができる。また、弱燃焼
時においては、王制流域２２−にて未燃ガスを再流入で
きるので排ガス特性を良好にできる。In particular, in this embodiment, a flow control tube 21 and an air control tube 22 are provided inside the inner flame tube 6, and during hard twist firing, the air flow 30 rising in the air control region 25 causes the inner flame tube to move in the dominant region 22b. Since sufficient combustion can be carried out in the air hole 11 on the side 6, the flame f can be shortened. Further, during weak combustion, unburned gas can be re-introduced in the royal flow area 22-, so that the exhaust gas characteristics can be improved.
なお、第１図、第２図でわかる通り、制流筒２１と空気
制御筒２３とは、空気制御筒２３を制流筒２１上端より
上方まで伸ばすことはもちろんだが、空気制御域２５も
十分な長さを有した方が望ましい。これは、制流筒２１
と空気制御筒２３の重なり部分が余りない場合には、空
気制御筒２５を未燃ガスが逆流し、ドラフトの強い空気
導入域２６にまわり込み、そのまま排出され排ガス特性
が悪化することがあるからである。そこで本発明の一実
施例においては制流筒２１の下端よりも空気制御筒２３
を下方まで伸ばし、前述した空気制御域２５を未燃ガス
が逆流する現象を生じないようにしている。As can be seen from FIGS. 1 and 2, the flow control tube 21 and the air control tube 23 are arranged so that not only the air control tube 23 extends above the upper end of the flow control tube 21, but also the air control region 25 is sufficiently extended. It is desirable to have a long length. This is the flow control tube 21
If there is not much overlap between the air control tube 23 and the air control tube 23, unburned gas may flow back through the air control tube 25, enter the air introduction region 26 where there is a strong draft, and be discharged as is, deteriorating the exhaust gas characteristics. It is. Therefore, in one embodiment of the present invention, the lower end of the air control tube 21 is
is extended downward to prevent unburned gas from flowing back through the air control area 25 described above.
以上通常の燃焼において灯芯１の露出高さを低くして燃
焼量を少な（していった場合について述べたが、密閉状
態の良い部屋で長時間燃焼させ酸欠状態になった場合も
同様の効果が得られる。すなわち、酸欠状態下では、酸
素濃度の低下に伴い燃焼量が低下していくが、この場合
の燃焼室８内の火炎は空気を求め上方へ向かう。つまり
弱燃焼状態とは火炎の形成状況が異なるわけである。し
かしながらこのような火炎に対しても、空気制御域２５
を通過し、内炎筒６の上方に集中的に空気を供給できる
ので、そこで燃焼が促進され良好な酸欠特性が得られる
ことになる。The above describes the case where the exposed height of the lamp wick 1 is lowered to reduce the amount of combustion during normal combustion, but the same problem can occur when burning for a long time in a well-sealed room and the oxygen is deficient. In other words, in an oxygen-deficient state, the amount of combustion decreases as the oxygen concentration decreases, but in this case the flame in the combustion chamber 8 moves upward in search of air.In other words, it is in a weak combustion state. However, even for such flames, the air control area 25
Since the air can be intensively supplied above the inner flame cylinder 6, combustion is promoted there and good oxygen deficiency characteristics are obtained.
さらに、王制流域２２ｂに集中的に空気を供給できるの
で、強燃焼において王制流域２２ｂに対向する内炎筒６
にて燃焼が行なわれるので、内炎筒６の空気孔１１から
押され燃焼室８内の火炎はやや外炎筒７寄りに形成され
る。そのため、外炎筒７の赤熱状況は良好になり、高輝
度となる。それにより放射効率が上昇し、使用者に快適
な暖房を提供できる。Furthermore, since air can be intensively supplied to the monarch region 22b, the inner flame tube 6 facing the monarch region 22b during strong combustion
Since combustion takes place in the combustion chamber 8, the flame in the combustion chamber 8 is pushed from the air hole 11 of the inner flame tube 6 and is formed slightly closer to the outer flame tube 7. Therefore, the red-hot condition of the outer flame cylinder 7 becomes favorable, and the brightness becomes high. This increases radiation efficiency and provides comfortable heating to users.
なお本実施例の燃焼筒は外炎筒の側に燃焼制御筒２７を
設けているのでさらに排ガス特性が向上する利点がある
。すなわち、発明が解決しようとする問題点で述べたよ
うに、外側からの空気は外筒９の上端の絞り部１５で外
炎筒７の空気孔１１と赤熱部１６の透孔１７からの空気
に分けられそれぞれ燃焼室８内に供給される。この時外
炎筒７の空気孔１１及び赤熱部１６の透孔１７１とは保
炎が形成されているが、絞り部１５と対向する部分で燃
焼室内８の未燃ガスの一部が内炎筒側はどではないが空
気通路２０に漏れる現象が起きて、そのうちの一部が赤
熱部１６の透孔１７の上部からそのまま排出される為、
低燃焼時にＣＯ／ＣＯ２を悪化させる。これを少な（す
る為に設けられたのが前述した燃焼制御筒２７で、外炎
筒気孔部２８からの空気により空気室２９で未燃ガスを
局部的に燃焼させて未燃ガスの漏れ量を少な（し、漏れ
た未燃ガスが黒矢印Ｃで示す如く燃焼室内のドラフトで
燃焼室８へ引込まれて燃焼するようにすると共に外炎筒
７に沿った空気の流れを起こし、Ｃｏ／ＣＯ２の悪化を
半減させている。したがって−段と低い所まで燃焼量を
絞ることができ、燃焼調節中は広いものとなる。The combustion tube of this embodiment has the combustion control tube 27 provided on the side of the outer flame tube, which has the advantage of further improving exhaust gas characteristics. That is, as described in the problem to be solved by the invention, air from the outside is passed through the air hole 11 of the outer flame tube 7 and the through hole 17 of the incandescent portion 16 at the constriction part 15 at the upper end of the outer tube 9. The fuel is divided into two parts and each is supplied into the combustion chamber 8. At this time, flame holding is formed between the air hole 11 of the outer flame tube 7 and the through hole 171 of the red-hot part 16, but a part of the unburned gas in the combustion chamber 8 is ignited into the inner flame at the part facing the throttle part 15. Although it is not from the cylinder side, a phenomenon occurs in which the air leaks into the air passage 20, and some of it is directly discharged from the upper part of the through hole 17 of the red-hot part 16.
It worsens CO/CO2 during low combustion. The above-mentioned combustion control tube 27 is provided to reduce the amount of unburned gas leaked by locally burning the unburned gas in the air chamber 29 using the air from the outer flame tube vent 28. (The leaked unburned gas is drawn into the combustion chamber 8 by the draft inside the combustion chamber as shown by the black arrow C and burned. At the same time, air flows along the outer flame tube 7 and the Co/ The deterioration of CO2 is halved.Therefore, the amount of combustion can be reduced to a lower level, and the amount of combustion is widened during combustion adjustment.
第３図は従来例と本実施例について燃焼量に対する排ガ
ス特性（ｃｏ／ｃｏ２）を測定した結果である。この図
から明らかなように本実施例品は燃焼量を絞っていって
もＣｏ／ＣＯ２は０．００２を越えず、良好な排ガス特
性を示している。また、第４図は酸欠特性を測定した結
果である。酸欠特性は初期燃焼量を約１３００ｋｏａｌ
／ｈにて行なったが本実施例品は室内ＣＯ濃度２００ｐ
ｐｍを超えずに消火しており、異常なＣＯを発生するよ
うなことはない。FIG. 3 shows the results of measuring exhaust gas characteristics (co/co2) with respect to combustion amount for the conventional example and the present example. As is clear from this figure, even when the combustion amount is reduced, Co/CO2 does not exceed 0.002 in the product of this example, showing good exhaust gas characteristics. Moreover, FIG. 4 shows the results of measuring oxygen deficiency characteristics. Oxygen deficiency characteristics reduce the initial combustion amount to approximately 1300 koal
/h, but this example product was tested at an indoor CO concentration of 200p.
The fire was extinguished without exceeding pm, and no abnormal CO was generated.
以上の実施例では制流筒２１の内方に空気制御筒２３を
一つ設けた場合について説明したが、空気制御筒はそれ
以上に複数個設けてもよく同等もしくはそれ以上の効果
が得られる。In the above embodiment, the case where one air control tube 23 is provided inside the flow control tube 21 has been explained, but a plurality of air control tubes may be provided and the same or better effect can be obtained. .
また今までは燃料供給部として灯芯を用いた場合につい
て述べてきたが、燃料として気体燃料を用い、燃焼装置
下方に設けた燃料供給口から気体燃料を燃焼室に導入す
る構成でもかまわない。Furthermore, although the case has been described so far in which a lamp wick is used as the fuel supply unit, a configuration in which gaseous fuel is used as the fuel and the gaseous fuel is introduced into the combustion chamber from a fuel supply port provided below the combustion device may also be used.
発明の効果
以上のように本発明の燃焼装置によれば、内炎筒内方に
、底面を略遮蔽した制流筒と、この制流筒の内方に制流
筒の上端より上方まで伸びた空気制御筒を設けているこ
とにより、内炎筒内方に流入した未燃ガスを制流筒と空
気制御筒間、あるいは空気制御筒内方より供給される空
気により、燃焼量に応じた位置で良好な混合状態を形成
し、燃焼を促進させることができる。その結果高濃度の
ＣＯが直接大気に放出されるようなことはな（なり、高
範囲な燃焼量の可変域に渡り、排ガス特性（ｃｏ／ｃｏ
２）を良好なものとすることができる。Effects of the Invention As described above, according to the combustion apparatus of the present invention, there is a flow restrictor tube whose bottom surface is substantially shielded inside the inner flame cylinder, and a flow restrictor tube that extends upward from the upper end of the flow restrictor tube inside the flow restrictor tube. By installing an air control tube, the unburned gas that has flowed into the inner flame tube is controlled according to the combustion amount by air supplied between the flow control tube and the air control tube, or from inside the air control tube. It is possible to form a good mixing state at the location and promote combustion. As a result, high concentrations of CO are not directly released into the atmosphere (and the exhaust gas characteristics (co/co
2) can be improved.
また、酸欠状態になった場合、燃焼室内の火炎は空気を
求め上方へ向うが、それに対し制流筒と空気制御筒との
間を通過し、制流筒上方に送られる空気により、内炎筒
の上方に集中的に空気を供給できるので、ＣＯが多量発
生することを防止することができる。加えて、内炎筒上
方に空気を集中的に送ることにより、外炎筒の赤熱輝度
を向上させることができるなど、使用性−安全性・快適
性に優れた燃焼装置を提供できる。In addition, when there is an oxygen deficiency, the flame inside the combustion chamber moves upward in search of air, but on the other hand, the air that passes between the flow restriction tube and the air control tube and is sent above the flow restriction tube causes the flame to move upward. Since air can be supplied intensively above the flame cylinder, it is possible to prevent a large amount of CO from being generated. In addition, by intensively sending air above the inner flame tube, it is possible to improve the red glow brightness of the outer flame tube, thereby providing a combustion device with excellent usability, safety, and comfort.
第１図は本発明の一実施例における燃焼装置の要部断面
図であり、強燃焼状態を示す。第２図は同燃焼装置の要
部断面図であり、弱燃焼状態を示す。第３図、第４図は
同燃焼装置の効果を説明するための特性図であり、第３
図は燃焼量−ｃｏ／ｃｏ２特性、第４図は室内ｏ２濃度
−室内ＣＯ濃度を示す。第５図は従来例を示す燃焼装置
の要部断面図である。
１・・・・・・燃料供給部、６・・・・・・内炎筒、７
・・・・・・外炎筒、８・・・・・・燃焼室、９・・・
・・・外筒、１１・・・・・・空気孔、２１・・・・・
・制流筒、２２１・・−・制流域、２３・・・・・・空
気制御筒。
代理人の氏名 弁理士 中 尾 敏 男 ばか１名／
−ｆｉｌ’）Ｉｔ給部
６−・内１に、閏
７−外１ｉ簡
８− 応笈寛
９・・−外 闇
第２図
室内ＣＯ濃次（Ｐ−）
２！１ ミ 鴛
Ｃｒ （） 。FIG. 1 is a sectional view of a main part of a combustion device according to an embodiment of the present invention, and shows a strong combustion state. FIG. 2 is a sectional view of the main part of the combustion device, showing a weak combustion state. Figures 3 and 4 are characteristic diagrams for explaining the effects of the combustion device.
The figure shows the combustion amount-co/co2 characteristic, and FIG. 4 shows the indoor O2 concentration-indoor CO concentration. FIG. 5 is a sectional view of a main part of a conventional combustion device. 1...Fuel supply section, 6...Inner flame tube, 7
...Outer flame tube, 8... Combustion chamber, 9...
... Outer cylinder, 11 ... Air hole, 21 ...
・Flow control tube, 221... Control area, 23... Air control tube. Name of agent: Patent attorney Toshi Nakao, 1 idiot/
-fil') It supply part 6-・Inside 1, Leap 7-Outside 1i Simple 8-Oyo Kan 9...-Outside Dark Figure 2 Indoor CO Noji (P-) 2!1 Mi Rakuro Cr () .
Claims (1)
された多数の空気孔を有する内炎筒と、前記外炎筒外方
に配された外筒と、前記外炎筒と前記内炎筒間に形成さ
れる燃焼室下端に設定された燃料供給部と、前記内炎筒
内方に配され、前記燃料供給部に対向する位置近傍から
上方へ伸び、前記内炎筒との間に形成される制流域を底
面で略遮蔽する制流筒と、前記制流筒内方に配され、前
記制流筒の上端より上方まで伸びた空気制御筒とよりな
る燃焼装置。an outer flame tube having a large number of air holes, an inner flame tube having a large number of air holes disposed inside the outer flame tube, an outer flame tube disposed outside the outer flame tube, and the outer flame tube. a fuel supply part set at the lower end of the combustion chamber formed between the cylinder and the inner flame cylinder, and a fuel supply part arranged inside the inner flame cylinder and extending upward from a position facing the fuel supply part, A combustion device comprising: a flow control tube that substantially shields a control area formed between the flow control tube and the flow control tube with its bottom surface; and an air control tube disposed inside the flow control tube and extending upward from the upper end of the flow control tube. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62280002A JPH07103963B2 (en) | 1987-11-05 | 1987-11-05 | Combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62280002A JPH07103963B2 (en) | 1987-11-05 | 1987-11-05 | Combustion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01121605A true JPH01121605A (en) | 1989-05-15 |
| JPH07103963B2 JPH07103963B2 (en) | 1995-11-08 |
Family
ID=17618936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62280002A Expired - Lifetime JPH07103963B2 (en) | 1987-11-05 | 1987-11-05 | Combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07103963B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3516174A1 (en) * | 1984-05-09 | 1985-11-14 | Toska Co., Ltd., Tokio/Tokyo | LOCKING DEVICE |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4419746Y1 (en) * | 1966-03-31 | 1969-08-23 | ||
| JPS5033730U (en) * | 1973-07-23 | 1975-04-11 |
-
1987
- 1987-11-05 JP JP62280002A patent/JPH07103963B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4419746Y1 (en) * | 1966-03-31 | 1969-08-23 | ||
| JPS5033730U (en) * | 1973-07-23 | 1975-04-11 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3516174A1 (en) * | 1984-05-09 | 1985-11-14 | Toska Co., Ltd., Tokio/Tokyo | LOCKING DEVICE |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07103963B2 (en) | 1995-11-08 |
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