JPS63201413A - Combustor - Google Patents

Abstract

PURPOSE:To prevent a rapid deterioration of exhaust gas characteristics under low intensity combustion conditions or oxygen-deficient conditions by disposing certain flow controlling tubes inside an inner lame tube and disposing a flange which extends circumferentially outwardly from a flow controlling tube above a connecting hole which is open to a flow controlling zone. CONSTITUTION:A flow controlling tube 26 disposed inside an inner flame tube 6 extends upwardly from a level nearly corresponding to the top of the wick 1, and has its bottom in a flow controlling zone 22 formed across the inner flame tube 6. A connecting hole 23 is disposed in the lower middle part of the wall of a flow controlling tube 21, and a flange 24 divides the flow controlling zone 22 into the lower flow controlling zone 25 and upper flow controlling zone 26 immediately above the connecting hole 23. The flange 24 is formed by causing the flow controlling tube 21 to protrude circumferentially outwardly by applying the beading or flaring. In the presence of the flange 24 which divides the flow controlling zone into the upper and lower halves, combustion gas flowing into the flow controlling tube above the flame becomes gas in the advanced stage of combustion, thus preventing a large quantity of CO from being released. Further, enough amount of air can be supplied from the connecting hole into the combustion chamber to promote the combustion in the lower part of the combustion chamber.

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
られている吸い上げ気化方式の燃焼装置があるが、これ
は一般に第５図に示すようなものであった。第５図にお
いて、１は灯芯で芯内筒２と芯外筒ａの間に上下動自在
に設定されている。BACKGROUND OF THE INVENTION Conventionally, as a combustion device of this type, there has been a suction vaporization type combustion device used in kerosene stoves, etc., and this was generally of the type shown in FIG. In FIG. 5, reference numeral 1 denotes a lamp wick, which is set to be vertically movable between an inner wick tube 2 and an outer wick tube a.

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
方より順次同心円状に配置され固定ビン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内方がら上方へ通じ
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。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 the fuel is vaporized. Reference numeral 9 denotes an outer cylinder, and the inner flame cylinder 6, the outer flame cylinder 7, and the outer cylinder 9 are sequentially arranged in a concentric circle from the inside and are integrated by a fixing pin 10. 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 a ventilation hole 13 communicating 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. At the upper end of the outer cylinder 9 there is a constriction part 15.
Furthermore, a red-hot part 16 is formed in the outer flame cylinder 7 above the constricted part 15, and a large through-hole 17 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
の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。上記構成において、灯芯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、赤熱
部１６を赤熱させて輻射熱を得ていた。しかしこのよう
な構成では燃焼量を小さくして行って火炎ｆ１が燃焼室
８内に下りてｆ２となると、矢印ａの様に内炎筒６内方
に漏出した未燃ガスが通気孔１３や内炎筒６上端付近の
空気孔１１から直接大気中に放出されるので、排ガス特
性、特にＣｏ／ＣＯ２が急激に悪化するために燃焼量調
節幅を大きく取ることができなかった。しかし、近年燃
焼量調節幅を拡大する検討が成され、その１例として第
６図に示すようなものがある。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 incandescent part 16 so as to cover the upper end of the air passage 20 between the incandescent part 16 and the transmission cylinder 18, and fixes the transmission cylinder 18. 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 flows into the inner flame tube 6 and the outer flame tube 7. The air was supplied into the combustion chamber 8 through the air hole 11 and the through hole 17 of the red-hot part 16, and combustion continued, making the red-hot part 16 red-hot and obtaining radiant heat. However, in such a configuration, when the combustion amount is reduced and the flame f1 descends into the combustion chamber 8 and becomes flame f2, the unburned gas leaking inward to the inner flame cylinder 6 as shown by arrow a will flow through the vent hole 13 and the flame f2. Since the exhaust gas is directly discharged into the atmosphere from the air hole 11 near the upper end of the inner flame tube 6, the exhaust gas characteristics, especially Co/CO2, deteriorate rapidly, making it impossible to adjust the combustion amount widely. However, in recent years, studies have been made to expand the range of combustion amount adjustment, and one example is shown in FIG.

第６図において、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内炎筒６先端
付近まで上方へのび、かつ内炎筒６間に形成される制流
域２２をその低面で遮蔽するように設けられている。２
３は制流筒２１中下部壁面に設けられた連通孔、２９は
連通孔２ａ直上で制流域２２を王制流域２５と１制流域
２６とに分割する遮蔽部である。２７は制流筒２１と内
炎筒天板１２の間に一定の間隔を有するように設定され
た通気部である。２８は空気導入路である。In Fig. 6, reference numeral 21 denotes a flow control tube installed inside the inner flame tube 6, which extends upward from near the position facing the tip of the wick 1 to near the tip of the inner flame tube 6, and is formed between the inner flame tubes 6. It is provided so as to shield the control area 22 with its lower surface. 2
Reference numeral 3 denotes a communication hole provided in the middle lower wall surface of the flow control tube 21, and 29 a shielding portion that divides the control area 22 into a primary control area 25 and a single control area 26 directly above the communication hole 2a. Reference numeral 27 is a ventilation section that is set to have a constant interval between the flow control tube 21 and the inner flame tube top plate 12. 28 is an air introduction path.

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、制流筒２１と遮蔽板２４
を別部材で形成しているため溶接などの手段で一体化す
る必要があり、特に制流筒２１と遮蔽板２４を複数カ所
に設ける場合はコスト、工程などで問題があった。Problems to be Solved by the Invention However, in the above configuration, the flow control tube 21 and the shielding plate 24
Since they are formed from separate members, they must be integrated by means such as welding, which poses problems in terms of cost and process, especially when the flow restrictor tube 21 and the shielding plate 24 are provided at multiple locations.

本発明はかかる従来の問題を解消するもので、弱燃焼時
や酸欠状態での排ガス特性の急激な悪化を防止すること
により、燃焼特性が良好で燃焼量調節幅が大きく、安全
かつ快適であるとともにコスト、工程などの製造上のメ
リットの大きな燃焼装置を得ることを目的とする。The present invention solves these conventional problems, and by preventing the rapid deterioration of exhaust gas characteristics during weak combustion or in oxygen-deficient conditions, the present invention has good combustion characteristics, a wide range of combustion amount adjustment, and is safe and comfortable. The objective is to obtain a combustion device that has significant manufacturing advantages in terms of cost and process.

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、灯芯に対向する位置近傍から上方に伸び内
炎筒との間に形成される制流域をその底面で遮蔽するよ
うな制流筒を設けるとともに、この制流筒の壁面の少な
くとも一カ所に、制流域に連通ずる連通孔を設け、この
連通孔直上に制流筒を外周方向に突出させることによっ
て制流域を上下に分割する遮蔽部を設けている。Means for Solving the Problems In order to solve the above-mentioned problems, the combustion device of the present invention has a combustion chamber formed between the inner flame tube and the inner flame tube, which extends upward from the vicinity of the position facing the lamp wick. A flow restriction tube that shields the control area with its bottom surface is provided, and a communication hole that communicates with the restriction area is provided in at least one part of the wall surface of the flow restriction tube, and the flow restriction tube is placed directly above the communication hole in the outer circumferential direction. A shielding part is provided that protrudes to divide the control area into upper and lower parts.

作　　用 本発明は、上記した構成により、制流域に未燃ガスを導
入し、この未燃ガスを制流筒上方に供給される清浄な空
気によって混合しながら、内炎筒上端部から集中的に燃
焼室に供給し、燃焼を促進させる。また、制流筒壁面に
連通孔を設け、この連通孔直上に制流域を上下に分割す
る遮蔽部を備えているので、火炎より上方の制流筒へ流
入する燃焼ガスは燃焼がかなり進行した状態のガスとな
り、ｃｏの多量の放出を防止することができる。Effects of the present invention With the above-described configuration, unburnt gas is introduced into the control area, and while this unburnt gas is mixed by clean air supplied above the flow control cylinder, it is concentrated from the upper end of the inner flame cylinder. is supplied to the combustion chamber to promote combustion. In addition, a communication hole is provided on the wall of the flow restriction tube, and a shielding section is provided directly above the communication hole that divides the restriction area into upper and lower parts, so that the combustion gas flowing into the flow restriction tube above the flame has progressed considerably. This makes it possible to prevent large amounts of CO from being released.

また、連通孔より燃焼室内に十分な空気を供給すること
ができるので燃焼室下方で燃焼を促進させることができ
る。Furthermore, since sufficient air can be supplied into the combustion chamber through the communication hole, combustion can be promoted below the combustion chamber.

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 Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

第１図において、１は灯芯で芯内筒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６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。１
１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。In FIG. 1, reference numeral 1 denotes a lamp wick, which 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 6, respectively, on which the inner flame tube 6 and the 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 the fuel is vaporized. Reference numeral 9 denotes an outer cylinder, and the inner flame cylinder 6, outer flame cylinder 7, and outer cylinder 9 are arranged approximately concentrically in order from the inside, and are integrated by a fixing pin 10. 1
Reference numeral 1 denotes 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 a ventilation hole 13 communicating 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、外炎筒
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内炎筒６先端付近ま
で上方へのび、かつ内炎筒６間に形成される制流域２２
をその低面で遮蔽するように設けられている。Reference numeral 18 denotes a transmission tube made of a transparent material such as glass, which is placed on the outer flame tube 9. A top frame 19 is placed on the upper end of the incandescent part 16 so as to cover the upper end of the air passage 20 between the incandescent 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,
A control area 22 extends upward from near the position facing the tip of the lamp wick 1 to near the tip of the inner flame tube 6 and is formed between the inner flame tubes 6.
It is installed so that it can be shielded by its lower surface.

２３は制流筒２１中下部壁面に設けられた連通孔である
。本実施例では連通孔２３は長穴形状としているが丸穴
その他種４の形が適用される。２９は連通孔２ａ直上で
制流域２２を王制流域２５と王制流域２６とに分割する
遮蔽部で、ビーディング加工やフレア加工等を応用して
制流筒２１を外周方向に突出させることによって形成し
ている。Reference numeral 23 denotes a communication hole provided in the middle lower wall surface of the flow control tube 21 . In this embodiment, the communication hole 23 has an elongated hole shape, but a round hole or other type 4 shape may be applied. Reference numeral 29 denotes a shielding part that divides the control area 22 into a monarch area 25 and a monarch area 26 directly above the communication hole 2a, and is formed by applying beading or flaring to make the flow restriction cylinder 21 protrude toward the outer circumference. are doing.

２７は制流筒２１と内炎筒天板１２の間に一定の間隔を
有するように設定された通気部である。Reference numeral 27 is a ventilation section that is set to have a constant interval between the flow control tube 21 and the inner flame tube top plate 12.

２８は空気導入路である。上記構成において灯芯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
続される。このときの内炎筒６内部および燃焼室８内の
燃焼ガスや空気の流れを第２図で説明する。内炎筒６内
方から供給される空気は制流筒２１下方から灯芯１近傍
に供給される白矢印（ａ）と空気導入路２８を上昇する
白矢印（ｂ）の流れに分けられる。上昇した空気の一部
は白矢印（ｃ）の様に連通孔２ａを通過し、燃焼室８へ
供給される。さらに、内炎筒６上方に供給された空気は
白矢印（ｄ）の様に空気孔１１や通気孔１３から燃焼室
８およびその上方へ供給される。また、一部は白矢印（
ａ）の様に王制流域２６に降下し、比較的下方の空気孔
１１からも燃焼室８に供給される。一方、空気流白矢印
（ａ’ｌによって気化された燃料は空気との混合ガスと
なって主として黒矢印（ｆ）のように燃焼室８を上昇す
る。しかし空気流白矢印（ｃ）および（ｄ）（、）によ
って王制流域２５および王制流域２６は負圧になるため
、混合ガヌの一部は黒矢印（ｇ）、（ｈ）の様に王制流
域２５、王制流域２６内に流入する。したがって王制流
域２５、王制流域２６には未燃ガスが充満する。この未
燃ガヌは連通孔２３、通気部２７で空気流白矢印（Ｃ）
、（ｄ）、（ｅ）と混合され、黒矢印（ｉ）、（ｉ）の
様に再び燃焼室８へ供給される。したがって強撚焼時に
は内炎筒６上端付近から未燃ガヌと空気を良く混合した
状態で燃焼室８上端付近に供給するので領域（Ｃ）付近
で効率よく燃焼させ、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ｆｒ　で燃焼される。28 is an air introduction path. 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 transferred to the inner flame tube 6 and the outer flame tube 7. The fuel is supplied into the combustion chamber 8 through the hole 11 and the through hole 17 of the red-hot section 16, and combustion continues. The flow of combustion gas and air inside the inner flame tube 6 and the combustion chamber 8 at this time will be explained with reference to FIG. The air supplied from inside the inner flame tube 6 is divided into the flow shown by the white arrow (a), which is supplied from below the flow control tube 21 to the vicinity of the lamp wick 1, and the flow shown by the white arrow (b), which ascends the air introduction path 28. A part of the rising air passes through the communication hole 2a as shown by the white arrow (c) and is supplied to the combustion chamber 8. Further, the air supplied above the inner flame cylinder 6 is supplied to the combustion chamber 8 and above from the air hole 11 and the vent hole 13 as shown by the white arrow (d). Also, some white arrows (
As shown in a), the air descends to the royal region 26 and is also supplied to the combustion chamber 8 from the relatively lower air holes 11. On the other hand, the fuel vaporized by the air flow white arrow (a'l) becomes a mixed gas with air and rises in the combustion chamber 8 mainly as shown by the black arrow (f).However, the air flow white arrow (c) and ( d) Because the pressure in the monarchy basin 25 and the monarchical basin 26 becomes negative due to (, ), a part of the mixed Ganu flows into the monarchical basin 25 and the monarchical basin 26 as shown by the black arrows (g) and (h). Therefore, the monarch basin 25 and the monarch basin 26 are filled with unburned gas.This unburned gas flows through the communication hole 23 and the ventilation part 27 as shown by the air flow white arrow (C).
, (d) and (e), and is again supplied to the combustion chamber 8 as shown by the black arrows (i) and (i). Therefore, during strong twist firing, the unburned Ganu and air are supplied from near the top of the inner flame tube 6 to the top of the combustion chamber 8 in a well-mixed state, so that they are efficiently combusted near area (C), and the combustion is completed here. The remaining unburned gas is combusted by the flame fr formed above.

つぎに灯芯１の露出高さを低くして燃焼量を小さくして
いくと、火炎は次第に燃焼室８内に下降し火炎ｆ８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
スは大幅に減少しているので、王制流域２６へ流入する
未燃ガス量も減少する。従って空気流白矢印（ｅ）との
混合領域は下方へ下がり、領域ｐ）付近が良好な混合領
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、さらにその上方に形成される火炎ｆ　で燃焼を
完結させる。この場合、王制流域２６に流入した未燃ガ
スは空気流白矢印（ｄ）、（ｓ）によってほとんどが燃
焼室８内に供給され火炎ｆ８で燃焼されるので、火炎ｆ
ｓより上方に対向する王制流域２６では未燃ガス成分は
ほとんどなく、火炎ｆｓ　より上方の空気孔１１や通気
孔１ａから排出される空気は清浄で、排ガス特性（ＣＯ
／ＣＯ２）は悪化しない。ちなみに、通気部２７付近の
ｃ。Next, when the exposed height of the lamp wick 1 is lowered to reduce the amount of combustion, the flame gradually descends into the combustion chamber 8 and becomes a flame f8. The flow in this case is the same as that in the case of hard twist firing, but since the amount of vaporized gas is significantly reduced, the amount of unburned gas flowing into the royal flow area 26 is also reduced. Therefore, the mixing area with the air flow white arrow (e) moves downward, and the area near area p) becomes a good mixing area, forming a flame holding state in this area, causing the wall surface of the inner flame tube 6 to become red hot, and further above it. Combustion is completed with the flame f that is formed. In this case, most of the unburned gas that has flowed into the monarch region 26 is supplied into the combustion chamber 8 by the air flow white arrows (d) and (s) and is burned by the flame f8, so the flame f
There are almost no unburnt gas components in the monarch basin 26 facing above the flame fs, and the air discharged from the air holes 11 and vents 1a above the flame fs is clean and has excellent exhaust gas characteristics (CO
/CO2) does not worsen. By the way, c near the ventilation section 27.

濃度は３０〜５０ｐｐｍ程度で、従来例に比べて大幅に
減少していることがわかった。しかし、さらに燃焼量を
少なくして火炎がさらに下降すると、内炎筒６上方の温
度が下がるため、空気流白矢印（ｅ）によって王制流域
２６内に十分に空気が供給されるにもかかわらず燃焼が
促進されないため火炎ｆｓの上方から排出される空気に
は次第にＣｏ成分が多く含まれる様になり、排ガス特性
は徐々に悪化する傾向を示す。しかし、さらに燃焼量を
少なくし火炎が遮蔽部２９より下方に−のように形成さ
れると、火炎ｆｍ近傍は温度も高く、また連通孔２３が
ら空気流口矢印（ｃ）によって十分空気が供給されるの
で領域［有］）付近で燃焼が促進される。It was found that the concentration was approximately 30 to 50 ppm, which was significantly reduced compared to the conventional example. However, if the combustion amount is further reduced and the flame descends further, the temperature above the inner flame tube 6 will drop, so even though sufficient air is supplied to the monarch region 26 by the airflow white arrow (e), Since combustion is not promoted, the air discharged from above the flame fs gradually comes to contain a large amount of Co, and the exhaust gas characteristics tend to gradually deteriorate. However, if the combustion amount is further reduced and the flame is formed downward from the shielding part 29 in a negative shape, the temperature near the flame fm will be high, and sufficient air will be supplied from the communication hole 23 by the air flow opening arrow (c). As a result, combustion is promoted near the area.

この場合、上側流域２６へも排ガスは流入するがこの排
ガス成分は、火炎’ｔｎで燃焼がかなり進んだ状態にあ
り、排ガス成分中のｃｏ比率はあまり高くならない。し
たがって排ガス特性は悪化しない。In this case, the exhaust gas also flows into the upper basin 26, but the combustion of this exhaust gas component has progressed considerably in the flame 'tn, and the co ratio in the exhaust gas component does not become very high. Therefore, the exhaust gas characteristics do not deteriorate.

以上、通常の燃焼において灯芯１の露出高さを低くして
燃焼量を少なくしていった場合について述べたが、点火
時においても連通孔２ａから燃焼室８下方に効率よく空
気が供給されるので迅速な燃焼促進が行われ、Ｃｏ１臭
気の発生は少ない。The above has described the case where the exposed height of the lamp wick 1 is lowered to reduce the amount of combustion during normal combustion, but air is efficiently supplied to the lower part of the combustion chamber 8 from the communication hole 2a even during ignition. Therefore, combustion is promoted quickly and less Co1 odor is generated.

また、密閉状態の良い部屋で長時間燃焼させた場合も同
様の効果が得られる。すなわち、酸欠状態下では、酸素
濃度の低下にともなって燃焼量が低下し、灯芯１の露出
高さを低くして燃焼量を少なくしていった場合とほぼ同
様な現象が見られるが連通孔２Ｇより燃焼室８に空気を
供給するので、そこで燃焼が促進され、酸欠特性も良好
になる。A similar effect can also be obtained by burning for a long time in a well-sealed room. In other words, under oxygen-deficient conditions, the amount of combustion decreases as the oxygen concentration decreases, and a phenomenon similar to that seen when the exposed height of the wick 1 is lowered to reduce the amount of combustion is observed. Since air is supplied to the combustion chamber 8 through the hole 2G, combustion is promoted there and oxygen deficiency characteristics are also improved.

第３図は第６図の従来例と本実施例について燃焼量に対
するＣｏ／Ｃｏ２特性を、また、第４図は酸欠特性を測
定した結果である。なお、酸欠特性は初期燃焼量的１２
５０Ｋｃａｅ／ｈｒで測定した。本実施例はＣｏ／ＣＯ
２特性、酸欠特性とも大幅に改良されており、効果が明
確である。FIG. 3 shows the results of measuring the Co/Co2 characteristics with respect to the combustion amount for the conventional example shown in FIG. 6 and the present example, and FIG. 4 shows the results of measuring the oxygen deficiency characteristics. In addition, the oxygen deficiency characteristics are based on the initial combustion amount12
Measured at 50Kcae/hr. In this example, Co/CO
Both properties and oxygen deficiency properties have been significantly improved, and the effects are clear.

また、本実施例では制流筒を外周方向に突出させること
によって遮蔽部を一体的に構成しうるのでコスト、工程
上のメリットが大きい。以上の実施例では連通孔２３お
よび遮蔽部が１ケ所の場合について述べたが、２ケ所以
上の構成をとっても同様の効果が得られる。Further, in this embodiment, the shielding portion can be integrally formed by projecting the flow restricting cylinder in the outer circumferential direction, which has great advantages in terms of cost and process. In the above embodiments, the case where the communication hole 23 and the shielding part are provided at one location has been described, but the same effect can be obtained even if the configuration includes two or more locations.

発明の効果 以上のように、本発明の燃焼装置によれば、次の効果が
えられる。Effects of the Invention As described above, the combustion apparatus of the present invention provides the following effects.

（１）内炎筒内方に制流筒を設けているため、空気導入
路を上昇する空気流によって制流域内に高濃度のＣＯを
含む未燃ガスが流入するが、通気部および連通孔に供給
される空気によって混合され、燃焼量に応じて内炎筒の
ある高さ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。(1) Since the flow control tube is provided inside the inner flame cylinder, unburnt gas containing high concentration of CO flows into the control region due to the air flow rising through the air introduction path. According to the amount of combustion, a good mixed state can be formed at a certain height of the inner flame cylinder, and combustion can be promoted.

（２通気部および連通孔から供給される空気によって未
燃ガスの内炎筒内部へ漏出する流れは遮蔽される。この
遮蔽効果により、火炎より上方の制流域内および空気導
入路は未燃ガスをほとんど含んでおらず、火炎上方の内
炎筒空気孔や通気孔から高濃度のＣＯが直接大気中に放
出されることはない。(The flow of unburnt gas leaking into the inner flame cylinder is blocked by the air supplied from the 2 ventilation part and the communication hole. Due to this shielding effect, the unburnt gas flows into the control area above the flame and the air introduction passage. High concentrations of CO are not directly released into the atmosphere from the inner flame tube air vents and ventilation holes above the flame.

（３）制流筒の壁面に連通孔を設け、その連通孔の直上
に制流域を分割、遮蔽する遮蔽板を設けているため、火
炎が遮蔽板以下に下がると、その直下の連通孔から効率
良く供給される空気によって再び燃焼は促進され、上方
の制流域へ流入する排ガスは燃焼のかなり進んだＣＯ比
率の低いガスとなるため、この燃焼ガスが放出されても
燃焼特性の悪化につながらない。(3) A communication hole is provided on the wall of the flow control cylinder, and a shield plate is provided directly above the communication hole to divide and shield the control area, so when the flame drops below the shield plate, the flow from the communication hole directly below Combustion is once again promoted by the air that is efficiently supplied, and the exhaust gas flowing into the upper control area becomes a gas with a low CO ratio that has undergone considerable combustion, so even if this combustion gas is released, it does not lead to deterioration of combustion characteristics. .

（４通気部から燃焼室下方に効率よく空気を供給するこ
とができるので燃焼室下方で燃焼を促進させる。(Since air can be efficiently supplied to the lower part of the combustion chamber from the 4 ventilation parts, combustion is promoted in the lower part of the combustion chamber.

６）制流筒を外周方向に突出させることによって遮蔽部
を一体的に構成しうるのでコスト、工程上のメリットが
太きい。6) Since the shielding portion can be integrally constructed by projecting the flow restricting tube toward the outer periphery, there are great advantages in terms of cost and process.

以上の効果により、弱燃焼時や酸欠状態での排ガス特性
の急激な悪化を防止し、点火特性も良好となるので、燃
焼特性が良好で燃焼量調節幅が大きく、安全かつ快適で
あり製造上のメリットの大きい燃焼装置を得ることがで
きる。The above effects prevent rapid deterioration of exhaust gas characteristics during weak combustion or in oxygen-deficient conditions, and improve ignition characteristics, resulting in good combustion characteristics and a wide range of combustion amount adjustment, making it safe and comfortable to manufacture. A combustion device with the above advantages can be obtained.

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

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図は同燃焼装置内の流れの断面図、第３図、第
４図は同装置の効果を説明するための特性図、第５図、
第６図は従来例を示す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、２１・・・・・・制流
筒、２２・・・・・・制流域、２３・・・・・・連通孔
、２４・・・・・・遮蔽板、２５・・・・・・王制流域
、２６・・・・・・上制流域、２７・・・・・・通気部
、２８・・・・・・空気導入路、２９・・・・・・遮蔽
部。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名ｌ−
灯　応 ６−内炎間 ７−外炎筒 第１図　　　　　２ｌ−ＩＩ直流 間４−！　液状 田−望気４人路 η−還　Ｒ，＠ 第２図 第３図 室内Ｏｚ　＊Ｒ＜”！、） 第５図 第６図 手続補正書 １事件の表示 昭和６２年特許願第３５０４６　　号 ２発明の名称 燃焼装置 ３補正をする者 事件との関係　　　　　　特　　許　　出　　願　　大
佐　所　　大阪府門真市大字門真１００６番地名　称　
（５８２）松下電器産業株式会社代表者　　　　　　谷
　　　井　　　昭　　　雄４代理人　〒５７１ 住　所　　大阪府門真市大字門真１００６番地松下電器
産業株式会社内 明　　　　細　　　　書 １、発明の名称 燃焼装置 ２、特許請求の範囲 多数の空気孔を有する外炎筒と、この外炎筒内方に配さ
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、前記内炎筒内
方に配され、前記燃料供給部上方近傍から上方に伸び、
前記内炎筒との間に形成される制流域に底面を有する制
流筒、と、前記制流筒壁面の上方方向の少なくとも一カ
所に設けられた連通孔と、前記連通孔上方で前記制流域
を上下に分割するように前記制流筒を外周方向へ突出さ
せて形成した鍔部を備えた燃焼装置。 ３、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る燃焼装置に関する
ものである。 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
られている吸い上げ気化方式の燃焼装置があるが、これ
は一般に第６図に示すようなものであった。第５図にお
いて、１は灯芯で芯内筒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５ｆｆ：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内に露出爆れここで燃料の気
化が行われる。９は外筒で内炎筒６、外炎筒７、外筒９
は内方より順次同心円状に配置され固定ビン１ｏ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の止端開
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
土に載置された拡炎板である。外筒９の上端には絞り部
１６が形成され、さらに、この絞り部１６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
の土に載置されている。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。上記構成において、灯芯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１了より燃焼室８内に供給され燃焼が継続され、赤熱
部１６を赤熱させて輻射熱を得ていた。しかしこのよう
な構成では燃焼量を小さくして行って火炎ｆ１が燃焼室
８内に下りてｆ２となると、矢印ａの様に内炎筒６内方
に漏出した未燃ガスが通気孔１３や内炎筒６上端付近の
空気孔１１から直接大気中に放出されるので、排ガス特
性、特にＣＯ／ＣＯ２が急激に悪化するために燃焼量調
節幅を大きく取ることができなかった。しかし、近年燃
焼量調節幅を拡大する検討が成され、その１例として第
６図に示すようなものがある。 第６図において、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がら内炎筒６先端
付近まで上方へのび、かつ内炎筒６間に形成される制流
域２２をその低面で遮蔽するように設けられている。２
３は制流筒２１中下部壁面に設けられた連通孔、２９は
連通孔２３直土で制流域２２を王制流域２５と上側流域
２６とに分割する遮蔽部である。２７は制流筒２１と内
炎筒天板１２の間に一定の間隔を有するように設定され
た通気部である。２８は空気導入路である。 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、制流筒２１と遮蔽板２４
金別部材で形成しているため溶接などの手段で一体化す
る必要があり、特に制流筒２１と遮蔽板２４を複数カ所
に設ける場合はコスト、工程などで問題があった。 本発明はかかる従来の問題を解消するもので、弱燃焼時
や酸欠状態での排ガス特性の急激な悪化を防止すること
により、燃焼特性が良好で燃焼量調節幅が大きく、安全
かつ快適であるとともにコスト、工程などの製造上のメ
リットの大きな燃焼装置を得ることを目的とする。 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、燃料供給部上方近傍から上方へ伸び内炎筒
との間に形成される制流域に底面を有するような制流筒
を設け、この制流筒の上下方向の少なくとも一カ所に制
流域に連通ずる連通孔を設け、この連通孔上方に、制流
筒を外周方向へ突出させることによって制流域を上下に
分割する鍔部を設けている。 作用 本発明は、上記した構成により、制流域に未燃ガスを導
入し、この未燃ガス金制流筒上方に供給される清浄な空
気によって混合しながら、内炎筒上端部から集中的に燃
焼室に供給し、燃焼を促進させる。また、制流筒壁面に
連通孔を設け、この連通孔上方に制流域を上下に分割す
る鍔部を備えているので、火炎より上方の制流筒へ流入
する燃焼ガスは燃焼がかなり進行した状態のガスとなり
、ＣＯの多量の放出を防止することができる。また、連
通孔より燃焼室内に十分な空気を供給することができる
ので燃焼室下方で燃焼を促進させることができる。 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
。 第１図において、１は燃料気化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ビン１ｏ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
１ｓｔ−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１６が形成
され、さらにこの絞り部１６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２ｏ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のび、かつ内炎筒６間に
形成される制流域２２に底面を有するように設けられて
いる。２３は制流筒２１中下部壁面に設けられた連通孔
である。本実施例では連通孔２３は長大形状としている
が丸穴その他糧々の形が適用される。２４は連通孔２３
直土で制流域２２を王制流域２５と王制流域２６とに分
割する鍔部で、ビーディング加工やフレア加工等を応用
して制流筒２１を外周方向に突出させることによって形
成している。２７は制流筒２１と内炎筒天板１２の間に
一定の間隔を有するように設定された通気部である。２
８は空気導入路である。 上記構成において灯芯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１ｅの透孔１７よす燃
焼室８内に供給され燃焼が継続される。このときの内炎
筒６内部および燃焼室８内の燃焼ガスや空気の流れを第
２図で説明する。内炎筒６内方から供給される空気は制
流筒２１下方から灯芯１近傍に供給される白矢印（＆）
と空気導入路２８を上昇する白矢印（ｂ）の流れに分け
られる。上昇した空気の一部は白矢印（Ｃ）の様に連通
孔２３を通過し、燃焼室８へ供給される。さらに、内炎
筒６上方に供給された空気は白矢印（ｄ）の様に空気孔
１１や通気孔１３から燃焼室８およびその上方へ供給さ
れる。また、一部は白矢印（６）の様に王制流域２６に
降下し、比較的下方の空気孔１１からも燃焼室８に供給
される。一方、空気流白矢印（＆）によって気化された
燃料は空気との混合ガスとなって主として黒矢印（ｆ′
）のように燃焼室８を上昇するが、混合ガスの一部は拡
散によって黒矢印（ｇ）　、　（ｈ）の様に王制流域２
６、王制流域２６に流入する。したがって王制流域２６
、王制流域２６には未燃ガスが充満する。この未燃ガス
は連通孔２３、通気部２７で空気流白矢印（０）　、　
（ｄ）　、　（６）と混合され、黒矢印（ｉ）　、　ｄ
）の様に再び燃焼室８へ供給される。したがって強撚焼
時には内炎筒６土端°付近から未燃ガスと空気を良く混
合した状態で燃焼室８上端付近に供給するので領域（Ｃ
）付近で効率よく燃焼させ、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ｆｒ　で燃焼さ
れる。つぎに灯芯１の露出高さを低くして燃焼量を小さ
くしていくと、火炎は次第に燃焼室８内に下降し火炎ｆ
８　となる。この場合の流れも強撚焼時と同様であるが
、気化ガスは大幅に減少しているので、王制流域２６へ
流入する未燃ガス量も減少する。従って空気流白矢印（
ｅ）との混合領域は下方へ下がり、領域（Ｄ）付近が良
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、さ
らにその上方に形成される火炎ｆｓ　で燃焼を完結させ
る。この場合、上側流域２６に流入した未燃ガスは空気
流口矢印（ｄ）　、　（θ）によってほとんどが燃焼室
８内に供給され火炎ｆｓで燃焼されるので、火炎ｆｓ　
　より上方に対向する上側流域２６では未燃ガス成分は
ほとんどなく、火炎ｆ８　より上方の空気孔１１や通気
孔１３から排出される空気は清浄で、排ガス特性（ｃｏ
／ｃｏ２）は悪化しない。ちなみに、通気部２７付近の
ＣＯ濃度は３０〜５０　ｐｐｍ程度で、従来例に比べて
大幅に減少していることがわかった。しかし、さらに燃
焼量を少なくして火炎がさらに下降すると、内炎筒６土
力の温度が下がるため、空気流口矢印（ｅ）によってよ
制流域２６内に十分に空気が供給されるにもかかわらず
燃焼が促進されないため火炎ｆ、の上方から排出される
空気には次第にＣＯ酸成分多く含まれる様になり、排ガ
ス特性は徐々に悪化する傾向を示す。しかし、さらに燃
焼量を少なくし火炎が遮蔽部２４より下方にｆｍのよう
に形成されると、火炎ｆｍ近傍は温度も高く、また連通
孔２３がら空気流口矢印（０）によって十分空気が供給
されるので領域（Ｅ）付近で燃焼が促進される。この場
合、上側流域２６へも排ガスは流入するがこの排ガス成
分は、火炎ｆ。で燃焼がかなり進んだ状態にあり、排ガ
ス成分中のＣＯ比率はあまり高くならない。したがって
排ガス特性は悪化しない。 以上、通常の燃焼において灯芯１の露出高さを低くして
燃焼量を少なくしていった場合について述べたが、点火
時においても連通孔２３から燃焼室８下方に効率よく空
気が供給されるので迅速な燃焼促進が行われ、ＣＯ、臭
気の発生は少ない。 また、密閉状態の良い部屋で長時間燃焼させた場合も同
様の効果が得られる。すなわち、酸欠状態下では、酸素
濃度の低下にともなって燃焼量が低下し、灯芯１の露出
高さを低くして燃焼量を少なくしていった場合とほぼ同
様な現象が見られるが連通孔２３より燃焼室８に空気を
供給するので、そこで燃焼が促進され、酸欠特性も良好
になる。 第３図は第６図の従来例と本実施例について燃焼量に対
するＧｏ／ＣＯ□特性を、また、第４図は酸欠特性を測
定した結果である。なお、酸欠特性社初期燃焼置駒１２
５０Ｋｃａβ／ｈｒで測定した。本実施例ばＣＯ／Ｃ０
２特性、酸欠特性とも大幅に改良されており、効果が明
確である。 また、本実施例では制流筒を外周方向に突出させること
によって鍔部全一体的に構成しうるのでコスト、工程上
のメリットが大きい。以上の実施例では連通孔２３およ
び遮蔽部が１ケ所の場合について述べたが、２ケ所以上
の構成をとっても同様の効果が得られる。 発明の効果 以上のように、本発明の燃焼装置によれば、次の効果か
えられる。 （１）内炎筒内方に制流筒を設けているため、空気導入
路を上昇する空気流によって制流域内に高濃度のｃｏｄ
含む未燃ガスが流入するが、通気部および連通孔に供給
される空気によって混合され、燃焼量に応じて内炎筒の
ある高さ位置で良好な混合状態全形成し、燃焼を促進さ
せることができる。 に））通気部および連通孔から供給される空気によって
未燃ガスの内炎筒内部へ漏出する流れは遮蔽される。こ
の遮蔽効果により、火炎より上方の制流域内および空気
導入路は未燃ガスをほとんど含んでおらず、火炎上方の
内炎筒空気孔や通気孔から高濃度のＣＯが直接大気中に
放出されることはない。 （３）制流筒の壁面に連通孔を設け、その連通孔の上方
に制流域を上下に分割する鍔部を設けているため、火炎
が鍔部以下に下がると、その直下の連通孔から効率良く
供給される空気によって再び燃焼は促進され、上方の制
流域へ流入する排ガスは燃焼のかなり進んだＣＯ比率の
低いガスとなるため、この燃焼ガスが放出されても燃焼
特性の悪化につながらない。 （４）通気部から燃焼室下方に効率よく空気を供給する
ことができるので燃焼室下方で燃焼全促進させる。 （６）制流筒を外周方向に突出させることによって鍔部
を一体的に構成しつるのでコスト、工程土のメリットが
大きい。 以上の効果により、弱燃焼時や酸欠状態での排ガス特性
の急激な悪化を防止し、点火特性も良好となるので、燃
焼特性が良好で燃焼量調節幅が大きく、安全かつ快適で
あり製造上のメリットの大きい燃焼装置を得ることがで
きる。 ４、図面の簡単な説明 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図は同燃焼装置内の流れの断面図、第３図、第
４図は同装置の効果を説明するだめの特性図、第６図、
第６図は従来例を示す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、２１・・・・・・制流
筒、２２・・・・・・制流域、２３・・・・・・連通孔
。 ２４・・・・・・鍔部、２６・・・・・・王制流域、２
６・・・・・・上側流域、２７・・・・・・通気部、２
８・・・・・・空気導入路。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名／−
ｊＴ　　　疋 ６−円Ａ簡 ７−Ｊ＋　炎　蜀 ２２−副流域 ２３−を通孔 ２４−＃　　罐Fig. 1 is a sectional view of essential parts of a combustion device according to an embodiment of the present invention, Fig. 2 is a sectional view of the flow inside the combustion device, and Figs. 3 and 4 are diagrams for explaining the effects of the device. Characteristic diagram, Figure 5,
FIG. 6 is a sectional view of a main part of a conventional combustion device. 1...Light wick, 6...Inner flame cylinder, 7...
...Outer flame tube, 8... Combustion chamber, 9...
Outer cylinder, 11... Air hole, 21... Control cylinder, 22... Control area, 23... Communication hole, 24... - Shielding plate, 25... Monarchy basin, 26... Upper basin, 27... Ventilation section, 28... Air introduction path, 29... ...Shielding part. Name of agent: Patent attorney Toshio Nakao and one other person
Light between 6-inner flame 7-outer flame tube Figure 1 2l-II DC 4-! Liquid rice field - Moki 4-person route η - Return R, @ Fig. 2 Fig. 3 Indoor Oz *R<”!,) Fig. 5 Fig. 6 Procedural amendments 1 case display Patent application No. 35046 of 1988 2. Name of the invention Combustion device 3. Relationship with the amended case Patent application Colonel Address 1006 Kadoma, Kadoma City, Osaka Prefecture Name
(582) Matsushita Electric Industrial Co., Ltd. Representative Akio Tanii 4 Agent 571 Address 1006 Oaza Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Specification 1, Name of invention Combustion device 2, Patent claim An outer flame tube having a large number of air holes, an inner flame tube having a large number of air holes arranged inside the outer flame tube, an outer flame tube located outside the outer flame tube, and the outer flame tube. and a fuel supply part set at the lower end of the combustion chamber formed between the inner flame cylinder, and arranged inside the inner flame cylinder and extending upward from near the upper part of the fuel supply part,
A flow control tube having a bottom surface in a control area formed between the inner flame tube and the flow control tube, a communication hole provided at at least one location above the wall surface of the flow control tube, and a flow control tube formed above the communication hole. A combustion device comprising a flange formed by projecting the flow control tube toward the outer circumference so as to divide the flow area into upper and lower parts. 3. Detailed Description of the Invention Field of Industrial Application The present invention relates to a combustion device used for home heating and the like. 2. Description of the Related Art Conventionally, as this type of combustion device, there has been a suction vaporization type combustion device used in kerosene stoves, etc., and this was generally of the type shown in FIG. In FIG. 5, reference numeral 1 denotes a lamp wick, which 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 tube 5ff, 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 the fuel is vaporized. 9 is an outer cylinder; inner flame cylinder 6, outer flame cylinder 7, outer cylinder 9.
are sequentially arranged concentrically from the inside and are integrated by a fixed bin 1o. 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 toe opening of the inner flame tube 6, and has a ventilation hole 13 communicating upward from the inside of the inner flame tube 6. 14 is the inner flame tube top plate 12
It is a flare plate placed on the ground. A constriction part 16 is formed at the upper end of the outer cylinder 9, and a red-hot part 16 is formed in the outer flame cylinder 7 above the constriction part 16, and a large through hole 17 is formed.
is provided. 18 is a transparent tube made of a transparent material such as glass, and the outer tube 9
It is placed on the soil of A top frame 19 is placed on the upper end of the incandescent part 16 so as to cover the upper end of the air passage 20 between the incandescent part 16 and the transmission cylinder 18, and fixes the transmission cylinder 18. 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 flows into the inner flame tube 6 and the outer flame tube 7. The air is supplied into the combustion chamber 8 through the air hole 11 and the through hole 1 of the red-hot part 16, and combustion continues, making the red-hot part 16 red-hot and obtaining radiant heat. However, in such a configuration, when the combustion amount is reduced and the flame f1 descends into the combustion chamber 8 and becomes flame f2, the unburned gas leaking inward to the inner flame cylinder 6 as shown by arrow a will flow through the vent hole 13 and the flame f2. Since the exhaust gas is directly discharged into the atmosphere from the air hole 11 near the upper end of the inner flame tube 6, the exhaust gas characteristics, especially CO/CO2, deteriorate rapidly, making it impossible to adjust the combustion amount widely. However, in recent years, studies have been made to expand the range of combustion amount adjustment, and one example is shown in FIG. In Fig. 6, reference numeral 21 denotes a flow control tube installed inside the inner flame tube 6, which extends upward from near the position facing the tip of the wick 1 to near the tip of the inner flame tube 6, and is formed between the inner flame tubes 6. It is provided so as to shield the control area 22 with its lower surface. 2
Reference numeral 3 denotes a communication hole provided in the middle lower wall surface of the flow control tube 21, and 29 a shielding portion that divides the control area 22 into a control area 25 and an upper area 26 directly through the communication hole 23. Reference numeral 27 is a ventilation section that is set to have a constant interval between the flow control tube 21 and the inner flame tube top plate 12. 28 is an air introduction path. Problems to be Solved by the Invention However, in the above configuration, the flow control tube 21 and the shielding plate 24
Since it is made of a metal member, it is necessary to integrate it by means such as welding, which poses problems in terms of cost and process, especially when the flow restrictor tube 21 and the shielding plate 24 are provided at multiple locations. The present invention solves these conventional problems, and by preventing the rapid deterioration of exhaust gas characteristics during weak combustion or in oxygen-deficient conditions, the present invention has good combustion characteristics, a wide range of combustion amount adjustment, and is safe and comfortable. The objective is to obtain a combustion device that has significant manufacturing advantages in terms of cost and process. Means for Solving the Problems In order to solve the above-mentioned problems, the combustion device of the present invention includes a restriction formed inside the inner flame cylinder, extending upward from near the upper part of the fuel supply section and between the inner flame cylinder and the inner flame cylinder. A flow restriction cylinder having a bottom surface in the flow area is provided, a communication hole communicating with the restriction area is provided at at least one location in the vertical direction of the flow restriction cylinder, and the flow restriction cylinder is made to protrude toward the outer circumference above the communication hole. This creates a flange that divides the control area into upper and lower parts. Effect of the present invention With the above-described configuration, unburned gas is introduced into the control area, and while being mixed by clean air supplied above the control tube, the unburnt gas is concentrated from the upper end of the inner flame tube. Supplied to the combustion chamber to promote combustion. In addition, a communication hole is provided on the wall of the restriction tube, and a flange is provided above the hole to divide the restriction area into upper and lower parts, so that combustion of the combustion gas flowing into the restriction tube above the flame has progressed considerably. This makes it possible to prevent the release of a large amount of CO. Furthermore, since sufficient air can be supplied into the combustion chamber through the communication hole, combustion can be promoted below the combustion chamber. Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In Fig. 1, 1 is the wick which is the fuel vaporization part, and the wick inner cylinder 2
and the core outer cylinder 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 the fuel is vaporized. Reference numeral 9 denotes an outer cylinder, and the inner flame cylinder 6, the outer flame cylinder 7, and the outer cylinder 9 are arranged approximately concentrically in order from the inside, and are integrated by a fixed pin 1o. 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 a ventilation hole 1st 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 16 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 16, and a through hole 17 with a large opening is provided. Reference numeral 18 denotes a transparent tube made of a transparent material such as glass, and is placed on the outer tube 9. 19 is a top frame placed on the upper end of the red-hot part 16 so as to cover the upper end of the air passage 2o between the red-hot part 16 and the transmission cylinder 18;
is fixed. Reference numeral 21 denotes a flow control tube installed inside the inner flame tube 6, which extends upward from near the position facing the tip of the wick 1 and has a bottom surface in the control area 22 formed between the inner flame tubes 6. It is being Reference numeral 23 denotes a communication hole provided in the middle lower wall surface of the flow control tube 21 . In this embodiment, the communicating hole 23 has an elongated shape, but a round hole or other shape may be applied. 24 is the communication hole 23
This is a flange part that divides the control area 22 into a royal area 25 and a royal area 26 using straight soil, and is formed by making the flow restricting tube 21 protrude in the outer circumferential direction by applying beading, flaring, or the like. Reference numeral 27 is a ventilation section that is set to have a constant interval between the flow control tube 21 and the inner flame tube top plate 12. 2
8 is an air introduction path. 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 transferred to the inner flame tube 6 and the outer flame tube 7. The fuel is supplied into the combustion chamber 8 through the holes 11 and the through holes 17 of the red-hot part 1e, and combustion continues. The flow of combustion gas and air inside the inner flame tube 6 and the combustion chamber 8 at this time will be explained with reference to FIG. Air supplied from inside the inner flame tube 6 is supplied from below the flow control tube 21 to the vicinity of the lamp wick 1 as indicated by the white arrow (&).
and the flow rising through the air introduction path 28 as indicated by the white arrow (b). A part of the rising air passes through the communication hole 23 as shown by the white arrow (C) and is supplied to the combustion chamber 8. Further, the air supplied above the inner flame cylinder 6 is supplied to the combustion chamber 8 and above from the air hole 11 and the vent hole 13 as shown by the white arrow (d). In addition, a part of the air descends to the royal region 26 as shown by the white arrow (6), and is also supplied to the combustion chamber 8 from the air holes 11 located relatively below. On the other hand, the fuel vaporized by the air flow white arrow (&) becomes a mixed gas with air and mainly becomes the black arrow (f'
), but part of the mixed gas rises through the combustion chamber 8 as shown by the black arrows (g) and (h) due to diffusion.
6. Flows into the monarchy basin 26. Therefore, the monarchy basin 26
, the monarchy basin 26 is filled with unburned gas. This unburnt gas flows through the communication hole 23 and the ventilation section 27 as indicated by the white arrow (0).
(d), mixed with (6), black arrow (i), d
) is again supplied to the combustion chamber 8. Therefore, during strong twist firing, unburned gas and air are supplied from near the end of the inner flame tube 6 to near the upper end of the combustion chamber 8 in a well-mixed state.
) and the unburned gas that could not be burned here is burned by the flame fr formed above. Next, when the exposed height of the lamp wick 1 is lowered to reduce the amount of combustion, the flame gradually descends into the combustion chamber 8 and the flame f
It becomes 8. The flow in this case is the same as that in the case of hard twist firing, but since the amount of vaporized gas is significantly reduced, the amount of unburned gas flowing into the royal flow area 26 is also reduced. Therefore, the airflow white arrow (
The mixed region with e) goes downward, and the area near region (D) becomes a good mixed region. A flame holding state is formed in this part, the wall surface of the inner flame tube 6 is made red hot, and the combustion is completed by the flame fs formed above it. In this case, most of the unburned gas that has flowed into the upper basin 26 is supplied into the combustion chamber 8 by the air flow port arrows (d) and (θ) and is burned by the flame fs.
In the upper basin 26 facing further upwards, there is almost no unburned gas component, and the air discharged from the air holes 11 and vents 13 above the flame f8 is clean and has excellent exhaust gas characteristics (co
/co2) does not deteriorate. Incidentally, it was found that the CO concentration near the ventilation section 27 was about 30 to 50 ppm, which was significantly reduced compared to the conventional example. However, if the combustion amount is further reduced and the flame descends further, the temperature of the inner flame cylinder 6 will drop, so even if sufficient air is supplied to the control area 26 by the air flow opening arrow (e). Regardless, since combustion is not promoted, the air discharged from above the flame f gradually comes to contain a large amount of CO acid components, and the exhaust gas characteristics tend to gradually deteriorate. However, if the combustion amount is further reduced and the flame is formed below the shielding part 24 as indicated by fm, the temperature near the flame fm will be high, and sufficient air will be supplied from the communication hole 23 by the air flow port arrow (0). As a result, combustion is promoted near region (E). In this case, the exhaust gas also flows into the upper basin 26, but the components of this exhaust gas are the flame f. Since combustion has progressed considerably, the CO ratio in the exhaust gas components does not become very high. Therefore, the exhaust gas characteristics do not deteriorate. The above has described the case where the exposed height of the lamp wick 1 is lowered to reduce the amount of combustion during normal combustion, but air is efficiently supplied to the lower part of the combustion chamber 8 from the communication hole 23 even during ignition. Therefore, combustion is promoted quickly, and less CO and odor are generated. A similar effect can also be obtained by burning for a long time in a well-sealed room. In other words, under oxygen-deficient conditions, the amount of combustion decreases as the oxygen concentration decreases, and a phenomenon similar to that seen when the exposed height of the wick 1 is lowered to reduce the amount of combustion is observed. Since air is supplied to the combustion chamber 8 through the holes 23, combustion is promoted there and oxygen deficiency characteristics are also improved. FIG. 3 shows the results of measuring the Go/CO□ characteristics with respect to the combustion amount for the conventional example shown in FIG. 6 and the present example, and FIG. 4 shows the results of measuring the oxygen deficiency characteristics. In addition, oxygen deficiency characteristic company initial combustion setting piece 12
It was measured at 50Kcaβ/hr. In this example, CO/C0
Both properties and oxygen deficiency properties have been significantly improved, and the effects are clear. Furthermore, in this embodiment, the flange can be constructed entirely in one piece by protruding the flow restricting tube in the outer circumferential direction, which has great advantages in terms of cost and process. In the above embodiments, the case where the communication hole 23 and the shielding part are provided at one location has been described, but the same effect can be obtained even if the configuration includes two or more locations. Effects of the Invention As described above, the combustion apparatus of the present invention provides the following effects. (1) Since the flow control tube is installed inside the inner flame tube, a high concentration of cod is generated within the control region due to the air flow rising through the air introduction path.
The unburned gas containing the gas flows in, but is mixed by the air supplied to the ventilation section and the communication hole, and a good mixed state is formed at a certain height of the inner flame tube depending on the amount of combustion, promoting combustion. Can be done. b)) The flow of unburnt gas leaking into the inner flame cylinder is blocked by the air supplied from the vent and the communication hole. Due to this shielding effect, the control area above the flame and the air introduction path contain almost no unburned gas, and high concentrations of CO are directly released into the atmosphere from the inner flame tube air vents and vents above the flame. It never happens. (3) A communication hole is provided on the wall of the flow control cylinder, and a flange is provided above the communication hole that divides the control area into upper and lower parts, so when the flame falls below the flange, the flow from the communication hole directly below the flange is provided. Combustion is once again promoted by the air that is efficiently supplied, and the exhaust gas flowing into the upper control area becomes a gas with a low CO ratio that has undergone considerable combustion, so even if this combustion gas is released, it does not lead to deterioration of combustion characteristics. . (4) Since air can be efficiently supplied from the vent to the lower part of the combustion chamber, combustion is fully promoted in the lower part of the combustion chamber. (6) Since the flange is integrally constructed by projecting the flow control tube toward the outer circumference, there are great advantages in terms of cost and process resources. The above effects prevent rapid deterioration of exhaust gas characteristics during weak combustion or in oxygen-deficient conditions, and improve ignition characteristics, resulting in good combustion characteristics and a wide range of combustion amount adjustment, making it safe and comfortable to manufacture. A combustion device with the above advantages can be obtained. 4. Brief description of the drawings Fig. 1 is a cross-sectional view of essential parts of a combustion device according to an embodiment of the present invention, Fig. 2 is a cross-sectional view of the flow inside the combustion device, and Figs. 3 and 4 are views of the same device. Figure 6 is a characteristic diagram for explaining the effect of
FIG. 6 is a sectional view of a main part of a conventional combustion device. 1...Light wick, 6...Inner flame cylinder, 7...
...Outer flame tube, 8... Combustion chamber, 9...
Outer cylinder, 11... Air hole, 21... Control tube, 22... Control area, 23... Communication hole. 24... Tsubabe, 26... Monarchy basin, 2
6... Upper basin, 27... Ventilation part, 2
8...Air introduction path. Name of agent: Patent attorney Toshio Nakao and 1 other person/-
jT 疋6- circle A 7-J+ flame Shu 22- sub-basin 23- through hole 24-# can

Claims (1)

【特許請求の範囲】[Claims] 多数の空気孔を有する外炎筒と、この外炎筒内方に配さ
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
る燃焼室下端に上下動自在に設定された灯芯と、前記内
炎筒内方に配され、前記灯芯に対向する位置近傍から内
炎筒先端付近まで上方に伸び、前記内炎筒との間に形成
される制流域をその低面で遮蔽する制流筒と、前記制流
筒壁面の少なくとも一カ所に前記制流域へ連通するよう
に設けられた連通孔と、前記連通孔直上で前記制流域を
上下に分割するように前記制流筒を外周方向へ突出させ
て形成した遮蔽部を備えた燃焼装置。an outer flame tube having a large number of air holes, an inner flame tube having a large number of air holes arranged inside the outer flame tube, an outer tube located outside the outer flame tube, and the outer flame tube. A lamp wick is set to be movable up and down at the lower end of the combustion chamber formed between the inner flame cylinders, and a lamp wick is arranged inside the inner flame cylinder and extends upward from near a position facing the lamp wick to near the tip of the inner flame cylinder. , a flow control tube whose lower surface shields a control area formed between the inner flame cylinder and the flow control tube; and a communication hole provided in at least one part of the wall surface of the flow control tube so as to communicate with the control area. A combustion device including a shielding portion formed by projecting the flow restriction cylinder toward an outer circumferential direction so as to divide the restriction area into upper and lower portions directly above the communication hole.