JPS625530Y2 - - Google Patents
Info
- Publication number
- JPS625530Y2 JPS625530Y2 JP1978051755U JP5175578U JPS625530Y2 JP S625530 Y2 JPS625530 Y2 JP S625530Y2 JP 1978051755 U JP1978051755 U JP 1978051755U JP 5175578 U JP5175578 U JP 5175578U JP S625530 Y2 JPS625530 Y2 JP S625530Y2
- Authority
- JP
- Japan
- Prior art keywords
- flame
- secondary air
- slit
- burner
- air passage
- 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
Links
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Gas Burners (AREA)
Description
【考案の詳細な説明】
本考案はバーナヘツドの形状を改良することに
より、火炎高さを低減するとともに火炎安定域を
拡げたガスバーナに関するものである。[Detailed Description of the Invention] The present invention relates to a gas burner that reduces the flame height and widens the flame stability range by improving the shape of the burner head.
スリツト状の炎口を多数並べたガスバーナは従
来からあるが、これらのバーナはスリツト間に2
次空気が入りにくく、従つて2次炎が長くなり、
更にスリツト炎口は一次空気比の大きいときに両
端から浮上ることから火炎安定性の面でも欠点を
有していた。 Gas burners with a large number of slit-shaped flame ports have been available for some time, but these burners have two slits between the slits.
It is difficult for secondary air to enter, so the secondary flame becomes longer.
Furthermore, the slit flame opening has a drawback in terms of flame stability because it floats from both ends when the primary air ratio is large.
本考案はバーナヘツド上に凸部を複数個設け、
この凸部にスリツト炎口をあけ、これら凸部間に
2次空気通路と凹部を設けることで2次空気の流
入をすみやかに行わせて炎口上に生じる2次火炎
を短くするとともに、スリツト炎口の短辺を向い
合わせることによつてこの短辺間に循環流を生じ
させ、さらに凸部には複数の炎口を形成させて火
炎の安定化をはかつたもので、以下添付図面とと
もにその実施例の詳細な説明を行う。 This invention has multiple convex parts on the burner head,
A slit flame opening is formed in this convex part, and a secondary air passage and a recess are provided between these convex parts to allow the secondary air to flow in quickly, shortening the secondary flame generated above the flame opening, and reducing the slit flame. By arranging the short sides of the openings to face each other, a circulation flow is created between the short sides, and multiple flame openings are formed on the convex part to stabilize the flame. A detailed explanation of the embodiment will be given below.
第1図に於て、1はノズル、2は空気吸入口、
3は混合管、4はスリツト炎口、6はスリツト炎
口を有する凸部、10はスリツト間に形成される
2次空気通路、11は循環流を形成する凹部で、
スリツト炎口4の短辺の向い合つた部分に、向い
合つた凸部6とバーナヘツドで形成されている。 In Figure 1, 1 is a nozzle, 2 is an air intake port,
3 is a mixing tube, 4 is a slit flame opening, 6 is a convex portion having a slit flame opening, 10 is a secondary air passage formed between the slits, 11 is a concave portion forming a circulation flow,
The slit burner opening 4 is formed with opposing convex portions 6 and burner heads at opposing short sides.
第2図は第1図のA−A′断面である。 FIG. 2 is a cross section taken along line A-A' in FIG.
第1〜2図において、ノズル1より噴出した燃
料ガスは空気吸入口2より周囲の空気を吸引し、
混合管3を通り燃料ガスと空気が完全に混合され
スリツト炎口4より噴出し、第2図に示す火炎5
を形成する。スリツト炎口4を有する凸部6間の
2次空気通路10より2次空気が流入し火炎5に
供給されている。そしてスリツト炎口4の間の凹
部11には循環流7が生じ火炎5の安定性を高め
ている。 In Figures 1 and 2, the fuel gas ejected from the nozzle 1 sucks the surrounding air through the air intake port 2,
The fuel gas and air are completely mixed through the mixing tube 3 and ejected from the slit flame port 4, forming the flame 5 shown in FIG.
form. Secondary air flows in from a secondary air passage 10 between convex portions 6 having slit flame ports 4 and is supplied to the flame 5. A circulating flow 7 is generated in the concave portion 11 between the slit flame ports 4, thereby increasing the stability of the flame 5.
この実施例は2次空気の流入に特徴があるもの
で、2次空気の動作についてさらに詳述する。火
炎間の2次空気は2次空気通路10を設けている
ことから2次空気の流入が容易に行われる。その
結果、2次空気通路のない場合に比較して火炎に
じやまされることなく火炎5への2次空気の供給
が多く、さらに2次空気は流入しながら2次炎へ
供給され2次火炎長を短くすることができる。2
次空気は第3図に示すように2次空気通路10を
循環流12となつて凹部11へ流入する。2次空
気通路の幅lはスリツト炎口4の長辺Lの3/8に
してある。一般に2次空気通路を設けずに、単に
スリツト炎口間の距離を大きくすると、2次空気
を充分に流入するためにはl/L=1以上必要と
なる。そして、スリツト炎口間の火移りが悪くな
り、バーナとして大きくなる。なお、凹部11と
2次空気通路10の大きさは上記実施例に限るも
のではなく、2次空気通路が2列あるごとに溝を
形成すれば同様の効果が得られる。またこの2次
空気の一部は2次空気通路10を通過する間に加
熱されつつ大部分は火炎5に供給され2次火炎8
を形成する循環流7に供給される。ここで9は一
次火炎である。 This embodiment is characterized by the inflow of secondary air, and the operation of the secondary air will be described in further detail. Since the secondary air passage 10 is provided between the flames, the secondary air can easily flow in. As a result, compared to the case without a secondary air passage, more secondary air is supplied to the flame 5 without being hindered by the flame, and the secondary air is also supplied to the secondary flame as it flows in, and the secondary air is supplied to the secondary flame as it flows in. The length can be shortened. 2
The secondary air flows through the secondary air passage 10 into the recess 11 as a circulating flow 12, as shown in FIG. The width l of the secondary air passage is set to 3/8 of the long side L of the slit flame opening 4. Generally, if the distance between the slit burners is simply increased without providing a secondary air passage, l/L=1 or more is required in order to sufficiently inflow the secondary air. Then, the flame transfer between the slit flame ports becomes poor and the burner becomes large. Note that the sizes of the recess 11 and the secondary air passage 10 are not limited to those in the above embodiment, and the same effect can be obtained by forming a groove for every two rows of secondary air passages. Further, while a part of this secondary air is heated while passing through the secondary air passage 10, most of it is supplied to the flame 5 and the secondary air 8 is heated.
is fed into a circulating stream 7 forming a . Here, 9 is the primary flame.
この循環流7は火炎5の基部へ高温の燃焼ガス
の再循環を行い、火炎安定性を高めるものであ
る。この時、低温の2次空気が多量に流入すると
循環流7の温度低下をひきおこし、火炎の安定性
が低下する。一方、2次空気流量が少いと循環流
部が酸素不足となり火炎は長くなる。しかし、本
考案は火炎間を2次空気が通過する間に温度上昇
が生じ、しかも2次空気通路10は火炎5と直接
に接触しないように火炎5より下部に位置するこ
とから2次空気の火炎による酸素の消費がなく循
環流に供給されることから火炎を短くすることが
できた。また2次空気通路10を通過する2次空
気も循環流を形成し、循環流7と同様の効果を生
じている。 This circulating flow 7 recirculates the hot combustion gases to the base of the flame 5 and increases flame stability. At this time, if a large amount of low-temperature secondary air flows in, the temperature of the circulating flow 7 will decrease, and the stability of the flame will decrease. On the other hand, if the secondary air flow rate is small, the circulating flow section will lack oxygen and the flame will become longer. However, in the present invention, the temperature rises while the secondary air passes between the flames, and the secondary air passage 10 is located below the flame 5 so as not to come into direct contact with the flame 5. The flame was able to be shortened because oxygen was not consumed by the flame and was supplied to the circulating flow. Further, the secondary air passing through the secondary air passage 10 also forms a circulating flow, producing the same effect as the circulating flow 7.
ここで、スリツト炎口4は2本組にしている。
そして、スリツト炎口4を2本組にした特長を以
下に従来の技術と比較して説明する。 Here, the slit flame openings 4 are arranged in a set of two.
The features of having a set of two slit burners 4 will be explained below in comparison with the conventional technology.
一般に第5図、第6図のように多数のスリツト
炎口13を近接して並べたスリツト炎口群を形成
し、このようなスリツト炎口群をバーナの長手方
向に並設して間に2次空気通溝14を設けたバー
ナヘツドを有するガスバーナではこのバーナを複
数並設した場合、次のことが考えられる。 Generally, as shown in FIGS. 5 and 6, a large number of slit burner ports 13 are arranged closely to form a slit burner port group, and such slit burner port groups are arranged in parallel in the longitudinal direction of the burner, and a slit burner port group is formed in between. In a gas burner having a burner head provided with a secondary air passage groove 14, when a plurality of burners are arranged in parallel, the following may occur.
○イ 各バーナを離して並設した際、各バーナ間を
燃焼用2次空気が流れるが、本考案でいう循環
流にはならない。○B When the burners are spaced apart and installed in parallel, the secondary air for combustion flows between the burners, but this does not result in a circulating flow as defined in the present invention.
○ロ 各バーナを接して並設した際、スリツト炎口
では火炎が接近し、本考案でいう凹部もないた
め2次空気の流入が少く火炎が長くなる。○B When the burners are installed side by side in contact with each other, the flames come close to each other at the slit burner, and since there is no concave part in the present invention, there is little inflow of secondary air and the flame becomes longer.
したがつて、単純にバーナを複数並べるだけで
は循環流の発生がなく、火炎の安定性や火炎長を
防止する効果はない。 Therefore, simply arranging a plurality of burners does not generate a circulating flow and is not effective in preventing flame stability or flame length.
しかるに本考案の如くスリツト炎口4を2本並
設して燃料流量を多くすると、第4図のように一
次火炎は倒立火炎を形成する。そして、2次空気
が一次火炎に流入し、燃焼を良好にする。さら
に、スリツト炎口間で火炎の安定性がよい。これ
に対し、スリツト炎口を第5図、第6図のように
3列以上にすると、両端のスリツト炎口以外の炎
口は倒立火炎を形成せず、一次火炎の燃焼も促進
されない。 However, when two slit flame ports 4 are arranged in parallel to increase the fuel flow rate as in the present invention, the primary flame forms an inverted flame as shown in FIG. Secondary air then flows into the primary flame to improve combustion. Furthermore, the flame stability between the slit flame openings is good. On the other hand, when the slit flame ports are arranged in three or more rows as shown in FIGS. 5 and 6, the flame ports other than the slit flame ports at both ends do not form an inverted flame, and the combustion of the primary flame is not promoted.
また、この時、スリツト炎口間を小さくして火
炎間のふく射熱により火炎集部の温度を上昇させ
て火炎安定化をはかつている。更に、2本並んで
いて、凹部がないので空気の流入がない。したが
つて、2本の炎口に形成される2次火炎は一塊り
となる。凹部11に面した2次火炎の厚みが増加
し、循環流の発生が容易に行うようにして火炎安
定化をはかつている。また、一塊りとなつた2次
火炎は浮力が強くなり、2次空気通路10より2
次空気が大量に流入し、完全燃焼しやすいことか
ら、2次空気通路10を介して隣合つた火炎は干
渉する事なく独立して燃焼する。その結果、2次
火炎を短くする事ができた。 Also, at this time, the distance between the slit flame openings is made small to increase the temperature of the flame concentration area by the heat radiated between the flames, thereby stabilizing the flame. Furthermore, since there are two in a row and there are no recesses, there is no inflow of air. Therefore, the secondary flames formed at the two flame ports become one mass. The thickness of the secondary flame facing the recess 11 is increased to facilitate the generation of circulation flow, thereby stabilizing the flame. In addition, the secondary flame that has become a mass has a stronger buoyancy, and the secondary flame is more buoyant than the secondary air passage 10.
Since a large amount of secondary air flows in and complete combustion is facilitated, flames adjacent to each other via the secondary air passage 10 burn independently without interference. As a result, we were able to shorten the secondary flame.
以上のように本考案は2次空気が2次空気通路
を通過する間に火炎により温度上昇し、この温度
の高い2次空気が凹部に供給されて、循環流に形
成される火炎を安定化させる。また、2次空気は
2次空気路を通過する際に一部が火炎に供給さ
れ、残りは凹部の下流部の火炎にも供給され、火
炎を短くすることができる。 As described above, in this invention, the temperature of the secondary air increases due to the flame while it passes through the secondary air passage, and this high-temperature secondary air is supplied to the recess to stabilize the flame formed in the circulating flow. let In addition, when the secondary air passes through the secondary air passage, a portion of the secondary air is supplied to the flame, and the rest is supplied to the flame downstream of the recess, thereby making it possible to shorten the flame.
第1図は本考案の実施例を示すガスバーナの上
面図、第2図は第1図のA−A′断面図、第3図
は第1図のA−A′線に対し直角方向からみた要
部拡大断面図、第4図は同要部断面図、第5図は
従来例のバーナの半截断面図、第6図は同平面図
である。
4……スリツト炎口、6……凸部、10……2
次空気通路。
Fig. 1 is a top view of a gas burner showing an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A' in Fig. 1, and Fig. 3 is a view taken from a direction perpendicular to line A-A' in Fig. 1. FIG. 4 is an enlarged sectional view of the main part, FIG. 5 is a half-cut sectional view of a conventional burner, and FIG. 6 is a plan view thereof. 4...Slit flame opening, 6...Protrusion, 10...2
Next air passage.
Claims (1)
る複数の凸部を上記スリツト炎口の短辺が向かい
合うように位置し、かつ各凸部間に2次空気通路
と凹部を設け、前記凸部には2列のスリツト炎口
を形成してなるガスバーナ。 A plurality of protrusions each having a slit burner head are positioned on the burner head so that the short sides of the slit burner ports face each other, and a secondary air passage and a recess are provided between each protrusion, and the protrusions have two rows. A gas burner with a slit flame opening.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1978051755U JPS625530Y2 (en) | 1978-04-18 | 1978-04-18 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1978051755U JPS625530Y2 (en) | 1978-04-18 | 1978-04-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54153033U JPS54153033U (en) | 1979-10-24 |
JPS625530Y2 true JPS625530Y2 (en) | 1987-02-07 |
Family
ID=28941689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1978051755U Expired JPS625530Y2 (en) | 1978-04-18 | 1978-04-18 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS625530Y2 (en) |
-
1978
- 1978-04-18 JP JP1978051755U patent/JPS625530Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS54153033U (en) | 1979-10-24 |
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