JPH02247408A - Liquid fuel combustion device - Google Patents
Liquid fuel combustion deviceInfo
- Publication number
- JPH02247408A JPH02247408A JP6879089A JP6879089A JPH02247408A JP H02247408 A JPH02247408 A JP H02247408A JP 6879089 A JP6879089 A JP 6879089A JP 6879089 A JP6879089 A JP 6879089A JP H02247408 A JPH02247408 A JP H02247408A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- flame
- fuel
- nozzle
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 60
- 239000000446 fuel Substances 0.000 title claims abstract description 43
- 239000007788 liquid Substances 0.000 title claims abstract description 20
- 230000000087 stabilizing effect Effects 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims 1
- 239000003381 stabilizer Substances 0.000 abstract description 19
- 239000000203 mixture Substances 0.000 abstract description 7
- 239000004071 soot Substances 0.000 abstract description 5
- 239000006096 absorbing agent Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 13
- 239000002184 metal Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Spray-Type Burners (AREA)
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
この発明は例えば給湯機に使用されるガンタイプバーナ
等の液体燃料燃焼装置に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a liquid fuel combustion device such as a gun-type burner used in a water heater, for example.
（ロ）従来の技術
この種の液体燃料燃焼装置は、例えば実公昭６２−１８
８０９号公報に開示されているように、燃焼用一次空気
が供給され、かつ、周側部に多数の二次空気口を有する
燃焼筒と、この燃焼筒の一次空気流入部に臨ませた液体
燃料噴霧用のノズルと、ノズルの近くに設けられた点火
装置とを備え、ノズルから噴霧された液体燃料と一次空
気とを混合して燃焼させるとともに、二次空気口から二
次空気を補給して燃焼が良好に行われるようにしたもの
が多く使用されている。(b) Prior art This type of liquid fuel combustion device is known, for example, from
As disclosed in Japanese Patent No. 809, a combustion cylinder to which primary air for combustion is supplied and has a large number of secondary air ports on the peripheral side, and a liquid facing the primary air inlet of the combustion cylinder. It is equipped with a fuel spray nozzle and an ignition device installed near the nozzle, and mixes and burns the liquid fuel sprayed from the nozzle with primary air, and supplies secondary air from the secondary air port. Many are used to ensure good combustion.
（ハ）発明が解決しようとする課題
ところで、上述した液体燃料燃焼装置では、ノズルから
燃料を噴霧しながら点火装置を作動させ、着火するよう
にしているので、着火時は炎が燃焼室全体に広がってか
ら燃焼筒内のスタビライザ等の保炎板にて保炎される傾
向があり、この際、多量のばい塵が放出される問題があ
った。また、通常燃焼時に比べて空気量に対する燃料量
が過剰になるため、ばい塵が一層発生しやすくなる欠点
があった。(C) Problems to be Solved by the Invention By the way, in the above-mentioned liquid fuel combustion device, the ignition device is activated to ignite the fuel while spraying it from the nozzle, so when the ignition occurs, the flame spreads throughout the combustion chamber. After the flame spreads, there is a tendency for the flame to be held by a flame holding plate such as a stabilizer in the combustion cylinder, and at this time there is a problem in that a large amount of dust is emitted. Additionally, since the amount of fuel relative to the amount of air is excessive compared to normal combustion, there is a drawback that dust is more likely to be generated.
この発明は上述した事実に鑑みてなされたものであり、
着火直後のばい塵の発生を抑制するととを目的とする。This invention was made in view of the above facts,
The purpose is to suppress the generation of dust immediately after ignition.
（ニ）課題を解決するための手段
この発明では、燃焼用一次空気が供給され、かつ、周側
部に多数の二次空気口を有する燃焼筒と、この燃焼筒の
一次空気流入部に臨ませた液体燃料噴霧用のノズルと、
ノズルの近くに設けられた点火装置と、前記燃焼筒の前
方に設けられ、かつ、ノズルに対して略直角な面を有す
る保炎装置とを備えた構成である。(d) Means for Solving the Problems The present invention includes a combustion tube to which primary air for combustion is supplied and which has a large number of secondary air ports on the peripheral side, and a combustion tube that faces the primary air inflow portion of the combustion tube. a nozzle for spraying liquid fuel;
This configuration includes an ignition device provided near the nozzle, and a flame holding device provided in front of the combustion tube and having a surface substantially perpendicular to the nozzle.
また、上述した保炎装置は吸油性を有するものとした構
成である。Further, the flame stabilizing device described above is configured to have oil absorbing properties.
（ホ）作用
このように構成すると、ノズルから噴霧された燃料と空
気の混合体が保炎装置によって行手を遮られるため、着
火時には炎が燃焼筒の前方へ広がりにくくなり、燃焼筒
の近くで速やかに保炎される。このように、保炎が速や
かに行われることにより、着火直後のばい塵量が低減す
る。(E) Effect With this configuration, the flame holding device blocks the flow of the mixture of fuel and air sprayed from the nozzle, making it difficult for the flame to spread forward of the combustion tube at the time of ignition. The flame is quickly stabilized. In this way, flame stabilization is performed quickly, thereby reducing the amount of dust immediately after ignition.
また、請求項２のものでは、保炎装置によって燃料の一
部が吸収されるため、着火時に燃料が空気に対して過剰
になるのを抑制でき、着火直後のばい塵量が一層低減さ
れる。また、消火直後に着火する場合でも、燃料が高温
の保炎装置にはじかれることなく吸収されるようにでき
、保炎が良好に行われる。Further, in the second aspect, since a part of the fuel is absorbed by the flame stabilizing device, it is possible to suppress the fuel from becoming excessive with respect to the air at the time of ignition, and the amount of soot and dust immediately after ignition is further reduced. . Further, even when ignition occurs immediately after extinguishing, the fuel can be absorbed by the high-temperature flame holding device without being repelled, and flame holding can be performed satisfactorily.
（へ）実施例
以下、この発明を図面に示す実施例に基づいて説明する
。(F) Embodiments The present invention will be described below based on embodiments shown in the drawings.
第１図において、（１）は外筒（２１）内に収納された
筒体であり、この筒体（１）の底抜（２）には取付具（
３）によりノズル（４）、及び点火プラグ（５）が取付
けられている。そして、（６）は取付具（３）の一次空
気通路、（７）は底板（２）に設けられた一次空気口で
ある。また、（８）は筒体（１）の先端部に固定された
リングである。In Fig. 1, (1) is a cylinder housed in an outer cylinder (21), and the bottom hole (2) of this cylinder (1) has a fitting (
3), a nozzle (4) and a spark plug (5) are attached. Further, (6) is a primary air passage of the fixture (3), and (7) is a primary air port provided in the bottom plate (2). Further, (8) is a ring fixed to the tip of the cylinder (1).
（１０）はノズル（４）の前方（下方）に設けられたス
タビライザであり、このスタビライザ（１０）の中心に
は燃料噴出用の開口（１２）が形成され、この間口（１
２）にリング（８）の先端の開口（８Ａ）周縁のフラン
ジ（８ａ）が嵌め込まれている。 ＜１３）・・・は第
２図及び第３図に示したようにスタビライザ（１０）に
放射状に切り起こして形成されたスタビ翼であり、各ス
タビ翼り１３）・・・は開口（１２）より僅かに外側か
ら外周部に向は形成され、各スタビ翼（１３）・・・の
切り起こしは中心部より外周部が大きくなっている。ま
た、各スタビ翼（１３）・・・に対応して切り起こしに
よる二次空気口（１４Ａ）・・・が形成されている。さ
らに、開口（１２）近傍の各スタビ翼（１３）・・・の
間には、それぞれ二次空気口（１４Ｂ）・・・が形成さ
れ、スタビライザ（１０）の外周部には複数の二次空気
口（１４Ｃ）・・・が形成されている。(10) is a stabilizer provided in front (below) of the nozzle (4), and a fuel injection opening (12) is formed in the center of this stabilizer (10).
2) is fitted with a flange (8a) around the opening (8A) at the tip of the ring (8). <13)... are stabilizer wings formed by cutting and raising the stabilizer (10) radially as shown in FIGS. 2 and 3, and each stabilizer wing 13)... ) is formed from slightly outside to the outer circumference, and the cut-and-raised portion of each stabilizer blade (13) is larger at the outer circumference than at the center. In addition, secondary air ports (14A) are formed by cutting and raising corresponding to each stabilizer blade (13). Further, a secondary air port (14B) is formed between each stabilizer blade (13) near the opening (12), and a plurality of secondary air ports (14B) are formed on the outer periphery of the stabilizer (10). Air ports (14C)... are formed.
（１５）は内筒（燃焼筒）であり、この内筒（１５）は
スタビライザ（１０）の外周フランジに接続され、内部
に燃焼空間（１６）を形成している。また、（１７）・
・・、 （１８）・・・、及び（１９）・・・はそれぞ
れ内筒（１５）に形成された二次空気口であり、（２０
）は炎口である。(15) is an inner cylinder (combustion cylinder), and this inner cylinder (15) is connected to the outer peripheral flange of the stabilizer (10) and forms a combustion space (16) inside. Also, (17)・
..., (18) ... and (19) ... are secondary air ports formed in the inner cylinder (15), respectively, and (20) ... are secondary air ports formed in the inner cylinder (15).
) is a flame outlet.
また、（２２）は外筒（２１）と内筒（１５）及び筒体
（１）との間の空気通路、（２３）は内筒（１５）の先
端部と外筒（２１）の先端部とを連結する連結具であり
、この連結具（２３）には複数の三次空気口（２４）・
・・が形成されいる。In addition, (22) is an air passage between the outer cylinder (21), the inner cylinder (15), and the cylinder body (1), and (23) is the tip of the inner cylinder (15) and the tip of the outer cylinder (21). This connector (23) has a plurality of tertiary air ports (24) and
... is formed.
（２５）は内筒（１５）の前方（下方）に設けられた保
炎装置である。この保炎装置（２５）は第４図に示すよ
うに、ノズル（４）に対して直角の皿状金属板（２６）
と、この金属板（２６）の内側にスポット溶接にて固着
された円形の金属板（２７）と、この金属板（２７）の
上に載置され、金属板（２６）周縁の複数の爪片（２８
）によって抜は止めされた円板状の吸油部材（２９）と
、複数本の支持棒（３０）とから構成されている。(25) is a flame stabilizing device provided in front (below) of the inner cylinder (15). As shown in FIG.
A circular metal plate (27) is fixed to the inside of this metal plate (26) by spot welding, and a plurality of claws placed on this metal plate (27) are placed on the periphery of the metal plate (26). pieces (28
) and a plurality of support rods (30).
この支持棒（３０）は両端にＬ型の屈曲部（３０Ａ）＜
３０Ｂ＞を有している。屈曲部（３０Ａ）は金属板（２
Ｇ）の周縁部を外側へ膨出させることによって金属板（
２６）（２７）間に形成されたＬ型の空間に遊挿され、
摺動自在に抜は止めされている。また、屈曲部（３０Ｂ
）は三次空気口（２４）の１つにタッピンねじ（３１）
を用いて固定された止め具（３２）によって内筒（１５
）の先端外周に取付けられている。金属板（２６）（２
７）及び支持棒（３０）には１３００’Ｃ以上の耐熱性
を有するステンレス鋼が使用され、吸油部材（２９）に
はセラミックスファイバーが使用されている。This support rod (30) has L-shaped bent portions (30A) at both ends.
30B>. The bent part (30A) is a metal plate (2
By bulging the peripheral edge of G) outward, the metal plate (
26) It is loosely inserted into the L-shaped space formed between (27),
It is slidable and is prevented from being removed. In addition, the bent part (30B
) is a self-tapping screw (31) in one of the tertiary air ports (24).
The inner cylinder (15) is fixed by the stopper (32) using the
) is attached to the outer circumference of the tip. Metal plate (26) (2
7) and the support rod (30) are made of stainless steel having a heat resistance of 1300'C or higher, and the oil absorbing member (29) is made of ceramic fiber.
次に、上述した液体燃料燃焼装置の動作について説明す
る。Next, the operation of the liquid fuel combustion apparatus described above will be explained.
着火時は、点火プラグ（５）が作動するとともに、電磁
ポンプ等の燃料ポンプ（図示せず）が運転して灯油等の
液体燃料がノズル（４）へ送られる。また、バーナ送風
ｍ（図示せず）の運転により、燃焼用空気が外筒（２１
）内に供給され、一次空気が一次空気通路（６）、及び
一次空気口（７）を通り筒体（１）内を流れる。そして
、一次空気はノズル（４）から第１図に鎖線矢印にて示
した範囲に噴出した液体燃料と共に開口（８Ａ）を通り
燃焼空間（１６）へ流れる。また、二次空気口（１４Ａ
）・・・から燃焼空間（１６）へ流入した二次空気はス
タビ翼（１３）・・・にて方向変換され、燃焼空間（１
６）を旋回して流れる。At the time of ignition, the spark plug (5) is activated, and a fuel pump (not shown) such as an electromagnetic pump is operated to send liquid fuel such as kerosene to the nozzle (4). In addition, by operating the burner blower m (not shown), combustion air is supplied to the outer cylinder (21
), and primary air flows through the cylinder (1) through the primary air passage (6) and the primary air port (7). The primary air flows into the combustion space (16) through the opening (8A) together with the liquid fuel ejected from the nozzle (4) in the area indicated by the chain arrow in FIG. In addition, the secondary air port (14A
)... into the combustion space (16) is direction-changed by the stabilizer blades (13)... and flows into the combustion space (1
6).
また、二次空気口（１４Ｂ）・・・、（１４Ｃ）・・・
を通った二次空気は二次空気口（１４Ｂ）・・・から略
垂直に流れる。Also, secondary air ports (14B)..., (14C)...
The secondary air that has passed through flows approximately vertically from the secondary air ports (14B).
また、二次空気が二次空気口＜１７）・・・、 （１８
）・・・、及び（１９）・・・を介して燃焼空間（１６
）へ流入する。そして、燃焼空間（１６）にて液体燃料
と一次空気との混合燃料と二次空気とが混ざり、点火プ
ラグ（５）によって着火されて燃焼し、炎が炎口（２０
）から噴出する。このとき、二次空気口（１４Ａ）・・
・から流出した二次空気の旋回流により、一次空気と液
体燃料との混合燃料と二次空気との混合は促進される。Also, if the secondary air is secondary air port < 17)..., (18
)..., and (19)... to the combustion space (16
). Then, the mixed fuel of liquid fuel and primary air and secondary air are mixed in the combustion space (16), ignited by the spark plug (5) and burned, and the flame is emitted from the flame port (20).
) to erupt from. At this time, the secondary air port (14A)...
- Mixing of the mixed fuel of primary air and liquid fuel with the secondary air is promoted by the swirling flow of the secondary air flowing out from the secondary air.
また、各二次空気口（１４Ｂ）・・・から略垂直に流出
した二次空気により、スタビ翼（１３）・・・の内縁部
で旋回流が弱め伐れる。そして、開口（１２）から燃焼
空間（１６）に入った液体燃料はスタビ翼（１３）・・
・の内縁部にて旋回流に巻き込まれることなく燃焼空間
（１６）へ噴出する。さらに、二次空気の一部がスタビ
翼（１３）・・・の外側の二次空気口（１４Ｃ）・・・
から燃焼空間（１６）へ流れるため、各スタビ翼（１３
）・・・に対応した二次空気口（１４Ａ）・・・から流
れる二次空気の量が減少する。この結果、旋回流は弱く
なり例えばノズル（４）から噴出する液体燃料の量を少
なくし、バーナを弱燃焼にした際にも、炎がスタビ翼（
１３）・・・の近くから形成され、燃焼が良好に行われ
ると共に、バーナの燃焼音が抑えられる。Further, the secondary air flowing out approximately vertically from each secondary air port (14B) weakens the swirling flow at the inner edge of the stabilizer blade (13). Then, the liquid fuel entering the combustion space (16) from the opening (12) is transferred to the stabilizer blade (13).
・It is ejected into the combustion space (16) without being caught in the swirling flow at the inner edge of the . Furthermore, a part of the secondary air is transferred to the secondary air port (14C) on the outside of the stabilizer blade (13)...
Each stabilizer blade (13)
)... The amount of secondary air flowing from the secondary air ports (14A) corresponding to... decreases. As a result, the swirling flow becomes weaker, and even when, for example, the amount of liquid fuel jetted from the nozzle (4) is reduced and the burner is set to low combustion, the flame does not reach the stabilizer blade (
13) It is formed near... to ensure good combustion and suppress the combustion noise of the burner.
本実施例では、燃焼空間（１６）を形成する内筒（１５
）の前方（下方）に、ノズル（４）に対して直角な面を
有する保炎装置（２５）を設けたので、着火の際、ノズ
ル（４）から噴霧された燃料と空気の混合体が保炎装置
（２５）によって行手を遮られ、炎が内＊（１５）前方
（下方）の燃焼室全体に広がる前に内筒（１５）の先端
近くで保炎される。このため、着火後、速やかに安定燃
焼に移行させることができ、保炎装置のない従来のもの
に比べてばい塵量が低下した。また、保炎装置（２５）
のノズル（４）側の面には吸油部材（２９）が設けられ
ているので、燃料の一部が吸油部材（２９）に吸収され
、燃料が空気に対して過剰になるのを抑制できるばかり
でなく、消火直後に着火する場合には、高温の保炎装置
（２５）によって燃料がはじかれる量を少なく（吸収さ
れる量を多く）シて速やかに保炎させ、ぽい塵の発生を
一層抑えることができる。In this embodiment, the inner cylinder (15) forming the combustion space (16) is
) is provided with a flame holding device (25) having a surface perpendicular to the nozzle (4), so that when igniting, the mixture of fuel and air sprayed from the nozzle (4) is The flame holding device (25) blocks the flame, and the flame is held near the tip of the inner cylinder (15) before it spreads throughout the combustion chamber in front (downward) of the inner cylinder (15). Therefore, after ignition, it was possible to quickly shift to stable combustion, and the amount of dust was reduced compared to the conventional type without a flame stabilizing device. Also, flame stabilizing device (25)
Since the oil absorbing member (29) is provided on the surface of the nozzle (4) side, a part of the fuel is absorbed by the oil absorbing member (29), and it is possible to prevent the fuel from becoming excessive with respect to the air. Instead, if a fire ignites immediately after extinguishing, the high-temperature flame holding device (25) reduces the amount of fuel that is repelled (increases the amount that is absorbed) to quickly hold the flame and further reduce the generation of dust. It can be suppressed.
第５図及び第６図は第１図のＴ位置にフォトトランジス
タ等の炎検知素子を設置し、保炎装置（２５）のある本
実施例のもの（第５図）と、保炎装置のない従来のもの
（第６図）の着火検出時間を測定したものである。保炎
装置（２５）を設けた本実施例のものでは保炎装置のな
い従来のものに比べて着火検出時間が短く、保炎が迅速
になされていることがわかる。Figures 5 and 6 show the present embodiment (Figure 5) in which a flame detection element such as a phototransistor is installed at the T position in Figure 1 and a flame holding device (25), and the flame holding device (Fig. 5). The ignition detection time of a conventional type (Fig. 6) was measured. It can be seen that the ignition detection time of this embodiment equipped with the flame stabilizing device (25) is shorter than that of the conventional one without the flame stabilizing device, and flame stabilization is achieved quickly.
また、第７図は保炎装置（２５）の温度変化特性を示す
ものである。この図から明らかなように、保炎装置（２
５）の各部の温度は燃焼開始から１〜２分で９００〜１
２５０℃となって飽和する。一方、消火後は１分位かか
って１００〜４００℃に低下し、その後、ゆっくりと低
下していく。このことから、保炎装置（２５）の冷却に
もかなりの時間がかかることがわかる。Moreover, FIG. 7 shows the temperature change characteristics of the flame stabilizing device (25). As is clear from this figure, the flame holding device (2
5) The temperature of each part will be 900 to 1 within 1 to 2 minutes from the start of combustion.
It becomes saturated at 250°C. On the other hand, after extinguishing the fire, it takes about 1 minute for the temperature to drop to 100-400°C, and then it slowly drops. From this, it can be seen that it also takes a considerable amount of time to cool down the flame holding device (25).
第８図は保炎装置（２５）が飽和温度に到達している状
態で一旦消火し、ある時間（燃焼才）時間）をおいて着
火した直後のばい塵量を測定したものである。保炎装置
（２５）に吸油部材（２９）がないものでも、燃焼オフ
、時間が３０秒以上ある場合には保炎装置のない従来の
ものに比べてばい塵量の低下がみられた。また、吸油部
材（２９）のある本実施例のものでは、燃焼オフ時間が
１５秒程度でもばい塵量が大幅に低下するため、燃焼の
オン−オフ周期が短いものにも適している。FIG. 8 shows the amount of soot and dust measured immediately after extinguishing the fire with the flame stabilizing device (25) reaching the saturation temperature and igniting after a certain period of time (combustion time). Even in the case where the flame holding device (25) did not include the oil absorbing member (29), when the combustion off time was 30 seconds or more, the amount of dust was reduced compared to the conventional one without the flame holding device. Furthermore, in this embodiment with the oil absorbing member (29), the amount of soot and dust is significantly reduced even when the combustion off time is about 15 seconds, so it is also suitable for those with short combustion on-off cycles.
尚、本実施例では、支持棒（３０）の先端部が金属板（
２６）と平行にＬ型に屈曲され、この屈曲部（３０Ａ）
が金属板（２６） （２７）間に摺動自在に挿入され、
抜は止めされているので、金属板（２６）（２７）と支
持棒（３０）との接続部の熱応力を吸収し、支持棒（３
０）の変形を防止しつつ、保炎装置（２５）を所定の位
置に保つことができる。In this embodiment, the tip of the support rod (30) is made of a metal plate (
26) is bent in an L-shape in parallel with this bent part (30A).
is slidably inserted between the metal plates (26) and (27),
Since removal is prevented, the thermal stress at the connection between the metal plates (26) and (27) and the support rod (30) is absorbed, and the support rod (30)
It is possible to maintain the flame holding device (25) in a predetermined position while preventing deformation of the flame holding device (25).
（ト）発明の効果
この発明は以上のように構成されているので、ノズルか
ら噴霧された燃料と空気の混合体が燃焼筒の前方へ広が
るのを阻止しつつ、燃焼筒の近くで速やかに保炎させる
ことができ、着火直後のばい塵の発生の少ない液体燃料
燃焼装置を提供できるものである。また、請求項２のも
のにおいては、燃料の一部を保炎装置に吸収させ、燃料
が空気に対して過剰になるのを抑えることができるばか
りでなく、消火直後に着火する場合でも、燃料が保炎装
置によってはじかれないようにして保炎が速やかに行わ
れるようにでき、ばい塵量を一層低減させることができ
る。(G) Effects of the Invention Since the present invention is configured as described above, the mixture of fuel and air sprayed from the nozzle is prevented from spreading forward of the combustion tube, and is quickly sprayed near the combustion tube. It is possible to provide a liquid fuel combustion device that can maintain flame stability and generate less dust immediately after ignition. In addition, in the second aspect of the present invention, a part of the fuel is absorbed by the flame holding device, and not only can it be possible to prevent the fuel from becoming excessive with respect to the air, but even if the fuel ignites immediately after extinguishing, the fuel The flame holding device can quickly hold the flame by preventing it from being repelled by the flame holding device, and the amount of dust can be further reduced.
第１図はこの発明の一実施例を示す液体燃料燃焼装置の
断面図、第２図はスタビライザの正面図、第３図は第２
図に示したスタビライザのａ−ａ′線断面図、第４図は
保炎装置の斜視図、第５図は着火特性の説明図、第６図
は従来の着火特性の説明図、第７図は保炎装置の各部の
温度変化を示す説明図、第８図は燃焼オフ時間とばい塵
量との関係を示す説明図である。
（４）・・・ノズル、 （５）・・・点火プラグ（点火
袋り、 （１５）・・・内筒（燃焼筒）、 （２５）・
・・保炎装置、 （２９）・・・吸油部材。FIG. 1 is a sectional view of a liquid fuel combustion device showing an embodiment of the present invention, FIG. 2 is a front view of a stabilizer, and FIG.
4 is a perspective view of the flame stabilizing device, FIG. 5 is an explanatory diagram of ignition characteristics, FIG. 6 is an explanatory diagram of conventional ignition characteristics, and FIG. 8 is an explanatory diagram showing the temperature change of each part of the flame stabilizing device, and FIG. 8 is an explanatory diagram showing the relationship between the combustion off time and the amount of soot and dust. (4)...Nozzle, (5)...Spark plug (ignition bag), (15)...Inner tube (combustion tube), (25)...
...Flame stabilizing device, (29)...Oil absorbing member.
Claims (2)
の二次空気口を有する燃焼筒と、この燃焼筒の一次空気
流入部に臨ませた液体燃料噴霧用のノズルと、ノズルの
近くに設けられた点火装置と、前記燃焼筒の前方に設け
られ、かつ、ノズルに対して略直角な面を有する保炎装
置とを備えたことを特徴とする液体燃料燃焼装置。(1) A combustion cylinder to which primary air for combustion is supplied and which has a number of secondary air ports on the peripheral side, a nozzle for spraying liquid fuel facing the primary air inlet of the combustion cylinder, and a nozzle. 1. A liquid fuel combustion device comprising: an ignition device provided near the combustion tube; and a flame holding device provided in front of the combustion tube and having a surface substantially perpendicular to the nozzle.
範囲第１項記載の液体燃料燃焼装置。(2) The liquid fuel combustion device according to claim 1, wherein the flame stabilizing device has oil absorption properties.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1068790A JP2523012B2 (en) | 1989-03-20 | 1989-03-20 | Liquid fuel combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1068790A JP2523012B2 (en) | 1989-03-20 | 1989-03-20 | Liquid fuel combustion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02247408A true JPH02247408A (en) | 1990-10-03 |
| JP2523012B2 JP2523012B2 (en) | 1996-08-07 |
Family
ID=13383868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1068790A Expired - Lifetime JP2523012B2 (en) | 1989-03-20 | 1989-03-20 | Liquid fuel combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2523012B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05172311A (en) * | 1991-12-24 | 1993-07-09 | Noritz Corp | Burner by spray combustion |
| JP2011075188A (en) * | 2009-09-30 | 2011-04-14 | Ihi Corp | Burner device |
| US8622737B2 (en) * | 2008-07-16 | 2014-01-07 | Robert S. Babington | Perforated flame tube for a liquid fuel burner |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6249107A (en) * | 1985-08-28 | 1987-03-03 | Toshiba Corp | Liquid fuel combustion device |
| JPS6275319U (en) * | 1985-10-25 | 1987-05-14 |
-
1989
- 1989-03-20 JP JP1068790A patent/JP2523012B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6249107A (en) * | 1985-08-28 | 1987-03-03 | Toshiba Corp | Liquid fuel combustion device |
| JPS6275319U (en) * | 1985-10-25 | 1987-05-14 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05172311A (en) * | 1991-12-24 | 1993-07-09 | Noritz Corp | Burner by spray combustion |
| US8622737B2 (en) * | 2008-07-16 | 2014-01-07 | Robert S. Babington | Perforated flame tube for a liquid fuel burner |
| US9234659B2 (en) | 2008-07-16 | 2016-01-12 | Robert S. Babington | Perforated flame tube for liquid fuel burner |
| JP2011075188A (en) * | 2009-09-30 | 2011-04-14 | Ihi Corp | Burner device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2523012B2 (en) | 1996-08-07 |
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