JPH0680366B2 - Combustion device - Google Patents
Combustion deviceInfo
- Publication number
- JPH0680366B2 JPH0680366B2 JP6221886A JP6221886A JPH0680366B2 JP H0680366 B2 JPH0680366 B2 JP H0680366B2 JP 6221886 A JP6221886 A JP 6221886A JP 6221886 A JP6221886 A JP 6221886A JP H0680366 B2 JPH0680366 B2 JP H0680366B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- cylinder
- flame
- flame cylinder
- air
- 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.)
- Expired - Fee Related
Links
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。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion device used for household heating or 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が、これは
第４図に示す様に、多数の空気孔11を有する内炎筒６と
外炎筒７間に形成される燃焼室８に灯芯１先端を露出さ
せて燃料を気化、燃焼させるものである。通常外炎筒７
は外筒９の絞り部15より上方では開口面積の大きな透孔
17を有した赤熱部16を形成しており、灯芯１から気化し
た燃料を燃焼室８内で燃焼させ、赤熱部16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 apparatus, there is a suction vaporization type combustion apparatus used in petroleum stoves and the like, but as shown in FIG. 4, this is an internal flame having a large number of air holes 11. The tip of the wick 1 is exposed in the combustion chamber 8 formed between the cylinder 6 and the outer flame cylinder 7 to vaporize and burn the fuel. Normal outer flame cylinder 7
Is a through hole having a large opening area above the narrowed portion 15 of the outer cylinder 9.
The red-heated portion 16 having 17 is formed, and the fuel vaporized from the wick 1 is burned in the combustion chamber 8 to red-heat the red-heated portion 16 to obtain radiant heat.
発明が解決しようとする問題点 しかし、上記の様な構成では次の様な問題を生じてい
た。Problems to be Solved by the Invention However, the above-described configuration has the following problems.
通常の強燃焼では第４図に示す様に内炎筒６と外炎筒７
上方で二次炎f1を形成し、燃焼室８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排ガス特性を示
す。しかし、灯芯１の露出高さを低くして燃焼量を小さ
くした場合、火炎は燃焼室８内へ下がってf2の様に形成
される。この場合、内炎筒６の空気孔11や透孔17に形成
されていた火炎f3は火炎f2の上方では形成されなくな
る。従来からこの様な状態では排ガス特性、特にCO/CO2
特性が急激に悪化していた。これは以下に示す様に透過
筒18−赤熱部16間の流れに一原因があることが明らかと
なった。In normal strong combustion, the inner flame cylinder 6 and the outer flame cylinder 7 as shown in FIG.
Since the secondary flame f 1 is formed above and the unburned components rising in the combustion chamber 8 are completely burned, excellent exhaust gas characteristics are exhibited. However, when the exposed height of the wick 1 is reduced and the amount of combustion is reduced, the flame falls into the combustion chamber 8 and is formed like f 2 . In this case, the flame f 3 which has been formed air holes 11 and holes 17 of the inner flame tube 6 will not be formed above the flame f 2. Conventionally, in such a state, exhaust gas characteristics, especially CO / CO 2
The characteristics deteriorated sharply. It has been clarified that this is due in part to the flow between the transmission cylinder 18 and the red heat section 16, as shown below.
第２図の▲印は第４図の従来の燃焼装置のＡ−Ａ′線
（すなわち外筒９もしくは透過筒18と外炎筒７間の空気
通路20）の位置で高さ方向のCOの分布を弱燃焼時に測定
した結果である。Ａ−Ａ′の位置では外筒絞り部15以上
でCO濃度は急激に増加し、外炎筒７の上端付近でもかな
り高い値を示す。この結果から燃焼室８内および空気通
路20の空気および排ガスの流れは次の様になっているこ
とがわかる。すなわち、第４図に示す様に主たる空気の
流れは白矢印、気化ガスの流れは黒矢印で示されるが、
それに加え破線矢印の様な流れが考えられる。すなわ
ち、燃焼室８から空気通路20へ漏出する流れである。こ
の流れが存在するために、弱燃焼時、火炎が燃焼室８内
へ下がって火炎f2となった時、火炎f2より上方の透孔17
から高濃度のCOを含んだ排ガスが直接大気中に放出され
ることになり、CO/CO2特性が急激に悪化する。The ▲ mark in FIG. 2 indicates the CO level in the height direction at the position of line AA ′ (that is, the air passage 20 between the outer cylinder 9 or the permeation cylinder 18 and the outer flame cylinder 7) of the conventional combustion device of FIG. It is the result of measuring the distribution during weak combustion. At the position A-A ', the CO concentration sharply increases above the outer cylinder throttle portion 15 and shows a considerably high value near the upper end of the outer flame cylinder 7. From this result, it is understood that the flow of air and exhaust gas in the combustion chamber 8 and the air passage 20 is as follows. That is, as shown in FIG. 4, the main air flow is shown by a white arrow, and the vaporized gas flow is shown by a black arrow.
In addition to that, a flow like a dashed arrow can be considered. That is, it is a flow leaking from the combustion chamber 8 to the air passage 20. Due to the presence of this flow, when the flame falls into the combustion chamber 8 and becomes the flame f 2 during weak combustion, the through hole 17 above the flame f 2 is generated.
As a result, exhaust gas containing a high concentration of CO is released directly into the atmosphere, and the CO / CO 2 characteristics deteriorate rapidly.
本発明はかかる従来の問題を解消するもので、弱燃焼時
の燃焼特性の急激な悪化を抑制することにより、燃焼特
性が良好で燃焼量調節幅の大きな燃焼装置を得ることを
目的とする。The present invention solves such a conventional problem, and an object of the present invention is to obtain a combustion device having good combustion characteristics and a large combustion amount adjustment range by suppressing the rapid deterioration of the combustion characteristics during weak combustion.
問題点を解決するための手段 上記問題を解決するために本発明の燃焼装置では外炎筒
内方に燃料供給部上方近傍から上方に伸び、かつ前記外
炎筒との間に間隙を有した空気室を形成する様に燃焼制
御筒を設定している。Means for Solving the Problems In order to solve the above problems, in the combustion apparatus of the present invention, the inside of the outer flame cylinder extends upward from the vicinity of the upper portion of the fuel supply portion and has a gap between the outer flame cylinder and the outer flame cylinder. The combustion control cylinder is set so as to form an air chamber.
作用 本発明は上記した構成により外炎筒下部から燃焼室への
空気の供給を抑制し、かつ保炎の形成を防ぎ、燃焼室内
での燃焼を抑制しさらに、燃焼室内の流れを変え、また
空気通路内の排ガス組成を改良することができる。Effect The present invention suppresses the supply of air from the lower portion of the outer flame cylinder to the combustion chamber by the above-described configuration, and also prevents the formation of flame holding, suppresses combustion in the combustion chamber, and further changes the flow in the combustion chamber, The exhaust gas composition in the air passage can be improved.
実施例 以下、本発明の実施例を添付図面にもとづいて説明す
る。Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings.
第１図において、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、ここで燃料の気化が行な
われる。９は外筒で内炎筒６、外炎筒７、外筒９は内方
より順次略同心円状に配置され、固定ピン10によって一
体化されている。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通気
孔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。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の上端を遮蔽する様に赤熱
部16の上端に載置され、透過筒18を固定している。21は
外炎筒７の外筒絞り部15に対向する位置より下方の外炎
筒気化部22内方に設定された燃焼制御筒で、灯心１先端
上方より外筒絞り部15に対向する位置まで伸び、外炎筒
気化部との間にわずかに間隙を有する様に空気室23が形
成されている。In FIG. 1, reference numeral 1 denotes a wick which is a fuel supply unit and an inner core tube 2
It is set to be vertically movable between the outer core tube 3 and the outer core tube 3. The upper ends of the inner core tube 2 and the outer core tube 3 respectively form an inner fire tray 4 and an outer fire tray 5, on which an inner flame barrel 6 and an outer flame barrel 7 are placed.
At the time of combustion, the tip of the wick 1 is exposed in the combustion chamber 8 formed between the inner flame cylinder 6 and the outer flame cylinder 7, and the fuel is vaporized there. Reference numeral 9 denotes an outer cylinder. The inner flame cylinder 6, the outer flame cylinder 7, and the outer cylinder 9 are sequentially arranged from the inside in a substantially concentric shape, and are integrated by a fixing pin 10. Reference numeral 11 denotes air holes provided in the inner flame cylinder 6 and the outer flame cylinder 7. Reference numeral 12 denotes an inner-flame cylinder top plate that closes the upper end opening of the inner-flame cylinder 6 and has a vent hole 13 that communicates upward from the inside of the inner-flame cylinder 6. Reference numeral 14 is a flame spreading plate placed on the inner flame cylinder top plate 12. A red heat section 16 is formed in the outer flame tube 7 above the throttle section 15 of the outer tube 9, and a through hole 17 having a large opening is provided. A transparent cylinder 18 made of a transparent material such as glass is placed on the outer cylinder 9. 19 is the top frame and the red heat part 16
The transmission tube 18 is mounted on the upper end of the red heat section 16 so as to shield the upper end of the air passage 20 between the transmission tube 18 and the transmission tube 18. Reference numeral 21 denotes a combustion control cylinder set inside the outer flame cylinder vaporization section 22 below a position facing the outer cylinder throttle section 15 of the outer flame cylinder 7, and at a position facing the outer cylinder throttle section 15 from above the tip of the wick 1. The air chamber 23 is formed so as to extend up to and has a slight gap between it and the vaporizing portion of the external flame.
上記構成において、灯心１に点火すると燃焼を開始し、
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、強燃焼時には第１図
に示す様に火炎frが形成される。この場合は従来例と同
様に燃焼室８内を上昇してきた未然成分を火炎frで完全
に燃焼させるので排ガス特性は良好となる。次に灯心１
の露出高さを低くして燃焼量を小さくした場合は火炎は
次第に燃焼室８内に下がりfsとなる。しかし、外炎筒気
化部22中上部に燃焼制御筒21を有しているため、外炎筒
気化部22上方から燃焼室８への直接的な空気の供給はな
く、また、燃焼制御筒21に対向する位置の外炎筒気化部
22の空気孔11へは保炎fmが形成されないため燃焼は促進
されず、燃焼室８内での燃焼負荷は従来例に比して小さ
くなり、従来例と同一燃焼量で比べると火炎fsの落ち込
みの程度は少なく、したがって空気通路20から火炎fs上
方の透孔17を通過して放出される未然ガスは少なくな
り、CO/CO2特性の悪化が抑制される。さらに、燃焼制御
筒の制流作用により、空気通路20への燃焼ガスの漏出を
抑制している。すなわち、従来例の様に燃焼制御筒がな
い場合は、燃焼ガスは燃焼室８の幅全体を使って上昇す
るので、赤熱部16へ達するとただちに空気通路20へ漏出
する。しかし、本実施例では、燃焼制御筒21が存在する
ため、燃焼ガスの流れは空気室23の幅だけ内炎筒６側へ
寄せられることになり、燃焼室８下方から上昇してきた
燃焼排ガスの空気通路20への漏出は抑制される。また燃
焼制御筒21に対向する外炎筒気化部22の空気孔11から空
気室23へ白矢印の様に供給された一定量の空気は、空気
室23の出口から燃焼室８内へ噴出され、気化ガスと混合
されるので、ここで燃焼し、火炎ftを形成し、燃焼ガス
は黒矢印ａの様に上昇する。したがって赤熱部16内壁付
近ではこの燃焼ガスによる層が形成され、燃焼室８下方
から上昇してくる未然ガス（黒矢印ｂ）の空気通路20へ
の漏出を抑制する。黒矢印ａの流れの層は赤熱部16の近
傍を上昇するので空気通路20への漏出はおこりやすい
が、黒矢印ａの流れは空気室23の出口に形成される火炎
ftによって燃焼がかなり進んだ状態の排ガスでCO2を多
く含んでおり、空気通路20から大気中へ放出されたとし
てもCO/CO2特性の悪化にはつながらない。In the above configuration, when the wick 1 is ignited, combustion starts,
A high temperature combustion gas generated by combustion rises in the combustion chamber 8 to generate a thermal draft, and the air required for combustion is generated in the inner flame cylinder 6,
It is supplied into the combustion chamber 8 through the air holes 11 of the outer flame cylinder 7 and the through holes 17 of the red heat section 16, and the combustion is continued. During strong combustion, a flame f r is formed as shown in FIG. In this case, as in the conventional example, the components that have risen in the combustion chamber 8 are completely burned by the flame f r , so that the exhaust gas characteristics are improved. Next wick 1
When the exposed height of is reduced to reduce the amount of combustion, the flame gradually falls into the combustion chamber 8 and becomes f s . However, since the combustion control cylinder 21 is provided in the upper portion of the outer flame cylinder vaporization section 22, there is no direct supply of air from above the outer flame cylinder vaporization section 22 to the combustion chamber 8, and the combustion control cylinder 21 External flame cylinder vaporization section facing the
Since the flame holding f m is not formed in the air hole 11 of 22, the combustion is not promoted, and the combustion load in the combustion chamber 8 is smaller than that of the conventional example, and the flame f is the same as that of the conventional example. The amount of s dropped is small, and therefore the amount of gas released from the air passage 20 through the through hole 17 above the flame f s is small, and deterioration of the CO / CO 2 characteristics is suppressed. Furthermore, the leakage of the combustion gas to the air passage 20 is suppressed by the flow restricting action of the combustion control cylinder. That is, when there is no combustion control tube as in the conventional example, the combustion gas rises using the entire width of the combustion chamber 8, and therefore, when it reaches the red heat section 16, it immediately leaks to the air passage 20. However, in the present embodiment, since the combustion control cylinder 21 is present, the flow of the combustion gas is directed toward the inner flame cylinder 6 side by the width of the air chamber 23, and the combustion exhaust gas rising from below the combustion chamber 8 is discharged. Leakage to the air passage 20 is suppressed. Further, a certain amount of air supplied from the air hole 11 of the outer flame cylinder vaporizer 22 facing the combustion control cylinder 21 to the air chamber 23 as shown by the white arrow is ejected from the outlet of the air chamber 23 into the combustion chamber 8. , It is mixed with vaporized gas, so that it burns here and forms a flame f t , and the combustion gas rises as shown by the black arrow a. Therefore, a layer of this combustion gas is formed in the vicinity of the inner wall of the red heat section 16, and the leakage of pre-existing gas (black arrow b) rising from below the combustion chamber 8 to the air passage 20 is suppressed. The flow layer indicated by the black arrow a rises near the red-heated portion 16, so that leakage to the air passage 20 easily occurs.
Exhaust gas in a state where combustion has progressed considerably by f t contains a large amount of CO 2 , and even if it is released into the atmosphere from the air passage 20, it does not lead to deterioration of the CO / CO 2 characteristics.
第２図は従来例と本発明の実施例について空気通路20内
のＡ−Ａ′位置の燃焼ガスの分布を測定した結果であ
る。COに関しては両者ともほぼ同等の結果が得られたが
CO2に関しては本発明の実施例がかなり高い値を示して
おり、CO/CO2特性の悪化につながらないことを示してお
り、上述の説明と一致する結果が得られた。FIG. 2 shows the results of measuring the distribution of the combustion gas at the position AA ′ in the air passage 20 for the conventional example and the embodiment of the present invention. Regarding CO, both obtained almost the same results,
Regarding CO 2 , the example of the present invention shows a considerably high value, indicating that it does not lead to deterioration of the CO / CO 2 characteristics, and results that are in agreement with the above explanation were obtained.
第３図は従来例と本実施例について燃焼量−CO/CO2特性
を測定した結果である。従来例（破線）に比べ本実施例
実線では、CO/CO2特性はかなり改良されており本発明の
効果が明白である。FIG. 3 shows the results of measuring the combustion amount-CO / CO 2 characteristics of the conventional example and this example. Compared with the conventional example (dashed line), the solid line of this embodiment has considerably improved CO / CO 2 characteristics, and the effect of the present invention is clear.
発明の効果 以上の様に本発明の燃焼装置によれば次の効果が得られ
る。Effects of the Invention As described above, according to the combustion apparatus of the present invention, the following effects are obtained.
（１）燃焼制御筒を設置することにより、燃焼室内の燃
焼負荷を下げることにより、弱燃焼時の火炎の落ち込み
を抑制し、空気通路から赤熱部上方を通じて大気へ放出
される排ガスを抑制する。(1) By installing the combustion control tube, the combustion load in the combustion chamber is reduced, thereby suppressing the flame drop during weak combustion and suppressing the exhaust gas released from the air passage to the atmosphere through the upper portion of the red heat section.
（２）燃焼制御筒の制流作用により、燃焼室下部から上
昇する未然ガスの空気通路への流出を抑制する。(2) Due to the flow restricting action of the combustion control cylinder, the outflow of pre-existing gas from the lower part of the combustion chamber to the air passage is suppressed.
（３）空気室から燃焼室へ噴出される空気によって赤熱
部内壁近傍で燃焼のかなり進んだCO2を多く含む排ガス
層を形成するので、燃焼室下部から上昇する未然ガスの
空気通路への流出を抑制する。(3) The air ejected from the air chamber into the combustion chamber forms an exhaust gas layer containing a large amount of highly burned CO 2 in the vicinity of the inner wall of the red heat section, so that the rising gas from the lower part of the combustion chamber flows into the air passage. Suppress.
（４）赤熱部内壁近傍に形成される排ガス層はCO2を多
く含んでいるため、空気通路へ流出して赤熱部上部から
大気へ放出されてもCO/CO2特性の悪化につながらない。(4) Since the exhaust gas layer formed near the inner wall of the red heat section contains a large amount of CO 2 , even if it flows out into the air passage and is released from the upper part of the red heat section to the atmosphere, the CO / CO 2 characteristics are not deteriorated.
以上の効果により、弱燃焼時の排ガス特性を大幅に改良
し、燃焼特性が良好でかつ燃焼調節幅の大きな燃焼装置
を得ることができる。Due to the above effects, it is possible to significantly improve the exhaust gas characteristics at the time of weak combustion, and obtain a combustion device having good combustion characteristics and a wide combustion adjustment range.
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、第２図、第３図は同装置の効果を説明するための特
性図、第４図は従来の燃焼装置の要部断面図である。 １……灯芯、６……内炎筒、７……外炎筒、８……燃焼
室、９……外筒、11……空気孔、15……外筒絞り部、21
……燃焼制御筒、22……空気室、23……外炎筒気化部。FIG. 1 is a sectional view of a main part of a combustion apparatus according to an embodiment of the present invention, FIGS. 2 and 3 are characteristic diagrams for explaining the effect of the apparatus, and FIG. 4 is a main section of a conventional combustion apparatus. FIG. 1 ... wick, 6 ... inner flame cylinder, 7 ... outer flame cylinder, 8 ... combustion chamber, 9 ... outer cylinder, 11 ... air hole, 15 ... outer cylinder throttle, 21
…… Combustion control cylinder, 22 …… Air chamber, 23 …… External flame cylinder vaporization section.
Claims (1)
筒内方に配置された多数の空気孔を有する内炎筒と、前
記外炎筒外方に位置した外筒と、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、前記外炎筒内方にあり、前記燃料供給部の近傍から
上方に伸び、前記外炎筒との間に間隙を有した空気室を
形成する燃焼制御筒とを備えた燃焼装置。1. An outer flame cylinder having a large number of air holes, an inner flame cylinder having a large number of air holes arranged inside the outer flame cylinder, and an outer cylinder positioned outside the outer flame cylinder. A fuel supply part formed at the lower end of the combustion chamber formed between the outer flame cylinder and the inner flame cylinder; and an inner flame of the outer flame cylinder, extending upward from the vicinity of the fuel supply part, and the outer flame cylinder. And a combustion control tube that forms an air chamber having a gap between the combustion apparatus and the combustion control tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6221886A JPH0680366B2 (en) | 1986-03-20 | 1986-03-20 | Combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6221886A JPH0680366B2 (en) | 1986-03-20 | 1986-03-20 | Combustion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62218703A JPS62218703A (en) | 1987-09-26 |
| JPH0680366B2 true JPH0680366B2 (en) | 1994-10-12 |
Family
ID=13193786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6221886A Expired - Fee Related JPH0680366B2 (en) | 1986-03-20 | 1986-03-20 | Combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0680366B2 (en) |
-
1986
- 1986-03-20 JP JP6221886A patent/JPH0680366B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62218703A (en) | 1987-09-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |