JP2696176B2 - Combustion control device - Google Patents
Combustion control deviceInfo
- Publication number
- JP2696176B2 JP2696176B2 JP1276289A JP1276289A JP2696176B2 JP 2696176 B2 JP2696176 B2 JP 2696176B2 JP 1276289 A JP1276289 A JP 1276289A JP 1276289 A JP1276289 A JP 1276289A JP 2696176 B2 JP2696176 B2 JP 2696176B2
- Authority
- JP
- Japan
- Prior art keywords
- flame
- combustion
- burner
- fuel supply
- detected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Regulation And Control Of Combustion (AREA)
- Control Of Combustion (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は特にポット式燃焼を行なう燃焼装置の電気的
制御に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electrical control of a combustion device that performs pot-type combustion.
従来の技術 従来よりポット式等燃焼炎検知による制御は火炎中に
挿入されたフレームロッドとバーナ間に交流電圧を印加
しておき、火炎の整流作用を利用するフレームロッド式
があり、燃焼中に火炎の消失を検知した場合はその時点
で燃料の供給を遮断し、運転を停止させている。2. Description of the Related Art Conventionally, control based on combustion flame detection, such as a pot type, has a flame rod type in which an alternating voltage is applied between a flame rod inserted into a flame and a burner and a rectifying action of the flame is used. When the disappearance of the flame is detected, the fuel supply is cut off at that point and the operation is stopped.
発明が解決しようとする課題 ポット式燃焼機の火炎検知にフレームロッド式を用い
ると検知応答時間は短いが、ポット式燃焼が火炎検知に
対しては非常に不安定であり、第３図に示す如く空気量
のわずかな変動に対し制御上の基準値を下廻ることがあ
り、これによって失火判断させると燃焼が正常であって
も失火判断し易い傾向になり、停止が頻発してしまう。
またこれを防止する為にわずかな時間炎検知レベルが下
廻っている間は、これを無視するように失火に対する応
答時間を設けると、実際に失火した場合にも燃料供給装
置が作動しており、バーナ内に余分な燃料が供給され、
油だまりが発生してしまう。Problems to be Solved by the Invention When the flame rod type is used for the flame detection of the pot type combustor, the detection response time is short, but the pot type combustion is very unstable with respect to the flame detection, as shown in FIG. As described above, a slight change in the air amount may fall below the control reference value. If a misfire is determined, even if the combustion is normal, the misfire tends to be easily determined, and stoppage occurs frequently.
To prevent this, if the flame detection level is slightly lower than the flame detection level, if a response time to misfire is provided so as to ignore it, the fuel supply device will operate even if the fire actually fails, Extra fuel is supplied inside the burner,
An oil pool will occur.
課題を解決するための手段 燃焼中に炎検知装置が炎無しと検知した時点で燃料供
給装置を停止状態にすると共に、その後一定時間以内に
再び炎検知装置が炎有りを検知した場合は燃料供給装置
を再び作動状態とし、前記一定時間以内に炎有りを検知
しない場合は運転を停止させるようにマイコンにより制
御する。Means for Solving the Problems The fuel supply device is stopped when the flame detection device detects no flame during combustion, and the fuel is supplied when the flame detection device detects the presence of the flame again within a predetermined time thereafter. The apparatus is again operated, and if the presence of a flame is not detected within the predetermined time, the microcomputer is controlled so as to stop the operation.
作用 これによって燃焼用空気量のわずかな変動等により一
時的に炎検知レベルが基準値を下廻ってもしかる後基準
値以上に復帰すれば運転を継続でき、また実際に失火し
た場合は余分な燃料供給が行なわれない為、油だまりも
発生しにくくなる。Operation As a result, even if the flame detection level temporarily falls below the reference value due to slight fluctuations in the amount of combustion air, the operation can be continued if the flame detection level returns to the reference value or later, and if there is an actual misfire, extra fuel will be used. Since no supply is performed, oil pools are less likely to occur.
実施例 以下、本発明による一実施例を図面を参照して説明す
る。第１図は本発明による制御ブロックを示す。１はバ
ーナ、２は炎検知装置であり、その入力３はバーナ１に
より形成される火炎中に挿入されたフレームロッドであ
る。４はマイコンであり、炎検知装置２からの炎の有／
無出力を入力とし、出力は増幅器５を駆動することによ
り燃料供給装置なる燃料ポンプ６を駆動している。An embodiment according to the present invention will be described below with reference to the drawings. FIG. 1 shows a control block according to the invention. 1 is a burner, 2 is a flame detector, and its input 3 is a frame rod inserted into the flame formed by the burner 1. Reference numeral 4 denotes a microcomputer, which has a flame from the flame detector 2
The non-output is input, and the output drives the amplifier 5 to drive the fuel pump 6 as a fuel supply device.
尚マイコン４内の処理を第２図にフローチャートとし
て示す。The processing in the microcomputer 4 is shown as a flowchart in FIG.
次に動作についてフローチャートを基に説明を加え
る。定常燃焼中に炎が正常に形成されているとフレーム
ロッド３とバーナ１間の電気的作用により炎検知装置２
が炎の有りを検知し、マイコン４がそれを検知すること
により増幅器５を介して燃料ポンプ６を駆動させ、運転
を継続している。そして運転中に炎無しを検知したとき
は燃料ポンプ６を停止するべく出力すると共に、内部タ
イマーを起動させる。その後内部タイマーが管理する一
定時間内に炎検知回路の炎有りを検知したときは、一時
的にレベルが低下したとして再び燃料ポンプ６を作動す
るべく出力し、定常燃焼へ戻る。しかし、一定時間内に
炎有りを検知できなかったときは実際に消炎したとして
運転を停止させる。Next, the operation will be described based on a flowchart. If the flame is formed normally during the steady combustion, the flame detecting device 2 is operated by the electric action between the flame rod 3 and the burner 1.
Detects the presence of a flame, and the microcomputer 4 detects the presence of the flame, drives the fuel pump 6 via the amplifier 5, and continues the operation. When the absence of flame is detected during operation, the fuel pump 6 is output to stop and the internal timer is started. Thereafter, when the presence of a flame in the flame detection circuit is detected within a predetermined time managed by the internal timer, the level is temporarily reduced, an output is made to operate the fuel pump 6 again, and the combustion returns to a steady state. However, if the presence of a flame cannot be detected within a certain time, the operation is stopped on the assumption that the flame has actually extinguished.
発明の効果 上記したように本発明によれば、燃焼中に炎検知装置
が炎無しを検知した時点で燃料供給装置を停止状態にす
ると共に、その後入一定時間以内に再び炎有りを検知し
た場合は燃料供給装置を再び作動状態とし、また一定時
間以内に炎有りを検知しない場合は運転を停止させるよ
うにすることにより、燃焼用空気量のわずかな変動等に
より一時的に炎検知レベルが基準値を下廻ってもしかる
後基準値以上に復帰すれば運転を継続でき、また実際に
失火した場合は余分な燃料供給を行なわない為、油だま
りも発生しにくくすることができる。Advantageous Effects of the Invention As described above, according to the present invention, when the flame detector detects the absence of flame during combustion, the fuel supply device is stopped, and after that, the presence of flame is detected again within a certain time after entering. In this case, the fuel supply system is turned on again, and if the presence of a flame is not detected within a certain time, the operation is stopped. If the value falls below the reference value, the operation can be continued if it returns to the reference value or more, and if a misfire actually occurs, excess fuel is not supplied, so that an oil pool can be less likely to occur.
第１図は本発明による制御ブロック図、第２図は同制御
手段たるマイコンのフローチャート、第３図は従来のこ
の種燃料制御装置における炎検知による運転特性図を示
す。 １……バーナ、２……炎検知装置、 ４……マイコン、６……燃料ポンプ。FIG. 1 is a control block diagram according to the present invention, FIG. 2 is a flowchart of a microcomputer serving as the control means, and FIG. 3 is an operation characteristic diagram based on flame detection in a conventional fuel control apparatus of this type. 1 ... burner, 2 ... flame detector, 4 ... microcomputer, 6 ... fuel pump.
Claims (1)
する燃料供給装置（６）とバーナ（１）内での燃焼炎の
有無を検知する炎検知装置（２）を有する燃焼制御装置
において、燃焼中に炎検知装置（２）が炎無しを検知し
た時点で前記燃料供給装置（６）を停止状態にすると共
に、その後一定時間以内に再び炎検知装置（２）が炎有
りを検知した場合は燃料供給装置（６）を作動状態と
し、前記一定時間以内に炎有りを検知しない場合は運転
を停止するマイコン（４）を備えたことを特徴とする燃
焼制御装置。Combustion control comprising a burner (1), a fuel supply device (6) for supplying fuel to the burner (1), and a flame detection device (2) for detecting the presence or absence of a combustion flame in the burner (1). In the device, the fuel supply device (6) is stopped when the flame detection device (2) detects no flame during combustion, and the flame detection device (2) again detects the presence of a flame within a predetermined time thereafter. A combustion control device comprising: a microcomputer (4) that activates the fuel supply device (6) when detected, and stops operation when the presence of a flame is not detected within the predetermined time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1276289A JP2696176B2 (en) | 1989-01-21 | 1989-01-21 | Combustion control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1276289A JP2696176B2 (en) | 1989-01-21 | 1989-01-21 | Combustion control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02195114A JPH02195114A (en) | 1990-08-01 |
| JP2696176B2 true JP2696176B2 (en) | 1998-01-14 |
Family
ID=11814412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1276289A Expired - Fee Related JP2696176B2 (en) | 1989-01-21 | 1989-01-21 | Combustion control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2696176B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7421427B2 (en) * | 2020-06-30 | 2024-01-24 | 株式会社コロナ | combustion equipment |
-
1989
- 1989-01-21 JP JP1276289A patent/JP2696176B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02195114A (en) | 1990-08-01 |
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