JPH0344976Y2 - - Google Patents
Info
- Publication number
- JPH0344976Y2 JPH0344976Y2 JP6584887U JP6584887U JPH0344976Y2 JP H0344976 Y2 JPH0344976 Y2 JP H0344976Y2 JP 6584887 U JP6584887 U JP 6584887U JP 6584887 U JP6584887 U JP 6584887U JP H0344976 Y2 JPH0344976 Y2 JP H0344976Y2
- Authority
- JP
- Japan
- Prior art keywords
- pot
- flame
- combustion
- air
- side wall
- 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 claims description 39
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 claims description 12
- 238000009792 diffusion process Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 description 13
- 230000007423 decrease Effects 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Control Of Combustion (AREA)
- Evaporation-Type Combustion Burners (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は立炎検出もできるポツト式燃焼器の
炎検出装置に関するものである。[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a flame detection device for a pot-type combustor that can also detect standing flames.
ポツト式石油燃焼器はポツト内に燃料を供給
し、側壁の小孔から空気の供給を受けてポツト内
で気化・混合・燃焼を行うものであり、燃焼を安
定にする為ポツト内に燃焼リングや拡散板が取付
けてある。ポツト内上部中央に拡散板を取付けた
ものは拡散板の側方よりも上部のポツト側壁から
供給する空気によつて主たる燃焼が行なわれ、燃
焼を検出する為のフレーム電極は該主たる燃焼部
にのぞませてポツト側壁に取付けられる。
A pot-type oil combustor supplies fuel into the pot, and vaporizes, mixes, and burns it within the pot by receiving air from small holes in the side wall.In order to stabilize combustion, a combustion ring is installed inside the pot. A diffuser plate is installed. For pots with a diffuser plate attached to the center of the upper part of the pot, the main combustion is carried out by the air supplied from the side wall of the pot above the side of the diffuser plate, and the flame electrode for detecting combustion is located at the main combustion part. It can be attached to the side wall of the pot with the front facing up.
該フレーム電極で異常燃焼時の立炎検出も行う
ものはフレーム電極を拡散板の側上方の空気孔列
よりも下方に取付け、燃焼状態の異常で炎が上方
に伸びる時はフレーム電極から炎が離れ、炎電流
の減少によつて異常状態を検出することができる
ようにしてある。 If the flame electrode also detects a standing flame during abnormal combustion, the flame electrode is installed below the air hole row on the upper side of the diffuser plate, and when the flame extends upward due to an abnormal combustion condition, the flame is detected from the flame electrode. The abnormal condition can be detected by the decrease in flame current.
ところで正常燃焼状態で異常燃焼状態の検出は
炎電流の増減によつて行つているから、正常燃焼
状態時に炎電流が大きくなる位置にフレーム電極
を取付けた時には異常燃焼状態となつても電流値
が減少せず、燃焼を継続させるトラブルがあり、
逆に正常燃焼状態時に炎電流が小さい位置にフレ
ーム電極を取付けた時には異常燃焼状態は確実に
検出できても、正常時の炎電流が少いから正常燃
焼中でも異常と判断して燃焼を止めてしまうトラ
ブルがある。この為フレーム電極の取付位置の選
定は非常にむつかしいものであつた。
By the way, abnormal combustion conditions are detected by increasing or decreasing the flame current during normal combustion conditions, so if the flame electrode is installed at a position where the flame current increases during normal combustion conditions, the current value will be low even in abnormal combustion conditions. There is a problem where the combustion continues without decreasing.
On the other hand, if the flame electrode is installed in a position where the flame current is low during normal combustion, abnormal combustion can be reliably detected, but since the flame current during normal combustion is low, it may be determined that there is an abnormality even during normal combustion, and combustion will be stopped. I have a problem. For this reason, it has been extremely difficult to select the mounting position of the frame electrode.
この考案は燃焼炎の形成に重要な働きのある拡
散板の形状を工夫することによつて、正常燃焼時
と立炎による異常燃焼時の炎電流の差が大きく現
れるようになつたもので、１は燃焼空気が供給さ
れる風路２内に取付けたポツト、３はポツト側壁
にあけた小孔であり、送風機７によつて風路２に
供給された空気は小孔３からポツト１内に送られ
る。４はポツト１内上部中央に位置させた皿状の
拡散板、８は拡散板４よりも下方のポツト１側壁
に取付けた燃焼リングであり、該拡散板４は燃焼
リング８に支脚９を使つて固定してある。３′は
ポツト側壁にあけた小孔３の中で特に拡散板４の
側方よりも上部の側壁にあけた空気孔であり、該
空気孔３′から供給する空気によつて主たる燃焼
が行なわれる。５は空気孔３′より下方のポツト
１側壁に取付けたフレーム電極でポツト１内にの
ぞませてある。
This idea was developed by modifying the shape of the diffuser plate, which plays an important role in the formation of combustion flames, so that the difference in flame current during normal combustion and abnormal combustion due to standing flames becomes large. 1 is a pot installed in the air passage 2 through which combustion air is supplied; 3 is a small hole drilled in the side wall of the pot; the air supplied to the air passage 2 by the blower 7 flows from the small hole 3 into the pot 1 sent to. 4 is a dish-shaped diffuser plate located in the center of the upper part of the pot 1, 8 is a combustion ring attached to the side wall of the pot 1 below the diffuser plate 4; It is fixed. 3' is an air hole made in the side wall above the side wall of the diffusion plate 4 among the small holes 3 made in the side wall of the pot, and the main combustion is carried out by the air supplied from the air hole 3'. It can be done. Reference numeral 5 denotes a frame electrode which is attached to the side wall of the pot 1 below the air hole 3' and looks into the pot 1.
４′は拡散板４の外縁で、テーパ加工もしくは
アール加工を施こして上に凸の拡散板４を形成し
ており、該拡散板４の上部にはフレーム電極５の
近傍で、かつ拡散板４の最下段の空気孔３′の略
正面に突部６を形成している。該突部６は線材等
の別部材をスポツト熔接で固着したり、拡散板４
のプレス加工時一体に突出部を形成してもよい。
またフレーム電極５との位置関係が特定できない
ものでは全周にリング状の段押部を形成すれば、
拡散板４は任意の位置に取付できる。 4' is the outer edge of the diffuser plate 4, which is tapered or rounded to form an upwardly convex diffuser plate 4; A protrusion 6 is formed substantially in front of the air hole 3' at the bottom of the air hole 3'. The protrusion 6 may be fixed to another member such as a wire by spot welding, or may be attached to the diffuser plate 4.
A protrusion may be formed integrally during press working.
In addition, if the positional relationship with the frame electrode 5 cannot be specified, a ring-shaped stepped part can be formed around the entire circumference.
Diffusion plate 4 can be attached at any position.
１０はポツト１内に取付けた点火ヒーター、１
１はポツト１内へ燃料を供給するノズルパイプで
あり、油タンク１２の燃料は電磁ポンプ１３によ
つてノズルパイプ１１を介してポツト１内に送ら
れる。 10 is an ignition heater installed in pot 1, 1
Reference numeral 1 designates a nozzle pipe for supplying fuel into the pot 1, and fuel in an oil tank 12 is sent into the pot 1 via the nozzle pipe 11 by an electromagnetic pump 13.
ポツト１内に供給された燃料と空気は拡散板４
下方の空間で気化・混合・一次燃焼を行い多量の
可燃ガスとなつて拡散板４とポツト１側壁との間
から上方へ抜ける。この時空気孔３′から多量の
空気が供給されているので青色系の燃焼炎を形成
し燃焼が行なわれる。
The fuel and air supplied into pot 1 are transferred to diffusion plate 4.
Vaporization, mixing, and primary combustion occur in the space below, resulting in a large amount of combustible gas that escapes upward from between the diffusion plate 4 and the side wall of the pot 1. At this time, since a large amount of air is supplied from the air hole 3', a blueish combustion flame is formed and combustion is carried out.
正常燃焼時の炎は空気孔３′からほぼ横方向に
形成され、また拡散板４の下方から上方へ抜ける
可燃ガスはテーパ加工もしくはアール加工された
外縁４′に誘導されて拡散板４上面に流れるもの
であり、横方向に延びる炎が拡散板４の下方から
上方へ流れるガス流によつて炎が上向かないよう
にしている。この為空気孔３′より下方に位置し
たフレーム電極５は下方向から炎に触れて炎電流
を流すことができる。 During normal combustion, the flame is formed almost horizontally from the air holes 3', and the combustible gas that escapes upward from the bottom of the diffusion plate 4 is guided by the tapered or rounded outer edge 4' and reaches the upper surface of the diffusion plate 4. The flame, which flows in the horizontal direction, is prevented from upward by the gas flow flowing from below to above the diffusion plate 4. Therefore, the flame electrode 5 located below the air hole 3' can touch the flame from below and cause a flame current to flow.
一方空気不足の時は空気孔３′から吹込む流速
がおそく、かつ供給される酸素量が少いから、横
方向へ延びる炎の力は弱く上向きとなりかつ炎も
高くなるものである。この為正常燃焼時に炎が触
れていたフレーム電極５は空気不足の異常燃焼時
には炎が触れなくなるので炎電流が減少し、異常
状態を検出することができる。 On the other hand, when there is a lack of air, the velocity of the flow blown from the air holes 3' is slow and the amount of oxygen supplied is small, so the force of the flame extending laterally is weak and the flame is directed upward, and the flame also becomes high. Therefore, the flame electrode 5, which was in contact with the flame during normal combustion, is no longer touched by the flame during abnormal combustion due to lack of air, so the flame current decreases, and an abnormal state can be detected.
ところでこの考案ではフレーム電極５近傍で拡
散板４の上面に突部６を形成し、かつ突部６を最
下段の空気孔３′の略正面に位置させたから、拡
散板４の下方から上方へ抜けるガス流が拡散板４
の外縁のテーパ加工部に沿つて流れる時突部６に
よつて乱流を起すものである。一方最下段の空気
孔３′から形成される燃焼炎はこの乱流に向つて
おり、乱流によつて燃焼炎の先端がおさえられ
る。この為炎の一部は下方へのふくらみフレーム
電極５に届きやすくなり炎電流が大きくなつた。 By the way, in this invention, a protrusion 6 is formed on the upper surface of the diffuser plate 4 near the frame electrode 5, and the protrusion 6 is located approximately in front of the air hole 3' at the lowest stage, so that the protrusion 6 is formed on the upper surface of the diffuser plate 4 from below to above. The gas flow passing through the diffusion plate 4
The protrusions 6 cause turbulence when the fluid flows along the tapered outer edge of the fluid. On the other hand, the combustion flame formed from the air hole 3' at the lowest stage is directed towards this turbulent flow, and the leading edge of the combustion flame is suppressed by the turbulent flow. For this reason, a part of the flame swelled downward and easily reached the frame electrode 5, resulting in an increase in flame current.
また立炎時には空気孔３′から横に広がる燃焼
炎は上向きとなるから突部６の乱流の影響はほと
んどなく、突部６のない時と同様炎電流が減少す
るものである。 In addition, when the flame is rising, the combustion flame that spreads laterally from the air hole 3' is directed upward, so there is almost no influence of the turbulent flow from the protrusion 6, and the flame current decreases as in the case without the protrusion 6.
以上の様にこの考案は、フレーム電極とポツト
側壁の空気孔との関係で特定される拡散板の上面
に突部を設けたもので、簡単な構成にもかかわら
ず正常燃焼状態に於て得られる炎電流が強くな
り、一方異常燃焼による立炎時には炎電流の増加
はなく、従来通り炎電流が減少するものである。
この為正常燃焼と異常燃焼との間の炎電流の差が
大きくなつたから確実に異常燃焼が検出できるよ
うになり、誤動作もなく空気量不足の異常燃焼の
まま燃焼を継続するトラブルを防ぐことができ
た。
As mentioned above, this invention has a protrusion on the top surface of the diffuser plate that is specified by the relationship between the flame electrode and the air hole in the side wall of the pot, and despite its simple structure, it is advantageous in normal combustion conditions. On the other hand, when there is a standing flame due to abnormal combustion, there is no increase in the flame current, and the flame current decreases as before.
As a result, the difference in flame current between normal combustion and abnormal combustion has become larger, making it possible to reliably detect abnormal combustion, and preventing malfunctions and the trouble of continuing abnormal combustion due to insufficient air volume. did it.
図面はこの考案品の断面図である。
１……ポツト、２……風路、３……小孔、３′
……空気孔、４……拡散板、４′……拡散板の外
縁、５……フレーム電極、６……突部。
The drawing is a cross-sectional view of this device. 1...Pot, 2...Air path, 3...Small hole, 3'
...air hole, 4...diffuser plate, 4'...outer edge of diffuser plate, 5...frame electrode, 6...protrusion.
Claims (1)
孔３を側壁にあけたポツト１を取付け、かつポ
ツト１内上部に皿状の拡散板４を位置させ、該
拡散板４の側方よりも上部のポツト側壁に多数
の空気孔３′をあけると共に、空気孔３′より下
方のポツト側壁にポツト１内にのぞませたフレ
ーム電極５を取付けたポツト式燃焼器に於て、
拡散板４の外縁４′はテーパ加工もしくはアー
ル加工を施こして上に凸の拡散板４を形成し、
かつ少くともフレーム電極５の近傍の拡散板４
には最下段の空気孔３′の略正面に位置して突
部６を形成したことを特徴とするポツト式燃焼
器の炎検出装置。 (2) 拡散板４の突部６は全周に形成したリング状
の段押部であることを特徴とする実用新案登録
請求の範囲第１項記載のポツト式燃焼器の炎検
出装置。[Claims for Utility Model Registration] (1) A pot 1 with a large number of small holes 3 formed in the side wall is installed in the air passage 2 through which combustion air is supplied, and a dish-shaped diffusion plate 4 is installed in the upper part of the inside of the pot 1. A large number of air holes 3' are formed in the side wall of the pot above the sides of the diffusion plate 4, and a frame electrode 5 is placed in the side wall of the pot below the air holes 3'. In the installed pot type combustor,
The outer edge 4' of the diffuser plate 4 is tapered or rounded to form an upwardly convex diffuser plate 4,
and at least the diffusion plate 4 near the frame electrode 5
A flame detection device for a pot type combustor is characterized in that a protrusion 6 is formed substantially in front of the lowest air hole 3'. (2) The flame detection device for a pot-type combustor according to claim 1, wherein the protrusion 6 of the diffuser plate 4 is a ring-shaped stepped portion formed around the entire circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6584887U JPH0344976Y2 (en) | 1987-04-30 | 1987-04-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6584887U JPH0344976Y2 (en) | 1987-04-30 | 1987-04-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63173649U JPS63173649U (en) | 1988-11-10 |
| JPH0344976Y2 true JPH0344976Y2 (en) | 1991-09-24 |
Family
ID=30903304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6584887U Expired JPH0344976Y2 (en) | 1987-04-30 | 1987-04-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0344976Y2 (en) |
-
1987
- 1987-04-30 JP JP6584887U patent/JPH0344976Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63173649U (en) | 1988-11-10 |
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