JPS58158424A - Combustion equipment having abnormality detecting function for flame detecting mechanism - Google Patents
Combustion equipment having abnormality detecting function for flame detecting mechanismInfo
- Publication number
- JPS58158424A JPS58158424A JP57040406A JP4040682A JPS58158424A JP S58158424 A JPS58158424 A JP S58158424A JP 57040406 A JP57040406 A JP 57040406A JP 4040682 A JP4040682 A JP 4040682A JP S58158424 A JPS58158424 A JP S58158424A
- Authority
- JP
- Japan
- Prior art keywords
- abnormality
- flame detecting
- ignition
- abnormal flame
- fuel
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
- F23N5/123—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/08—Microprocessor; Microcomputer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/28—Ignition circuits
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Control Of Combustion (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は石油ストーブ等の炎検知＆構を備えた燃焼装置
に係わシ、殊に炎検知機構の異常時での保諌に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustion device such as a kerosene stove that is equipped with a flame detection mechanism, and particularly to a method for protecting the flame detection mechanism in the event of an abnormality.
炎検知機構は燃焼中に何らかの原因で消炎した場合にこ
の消炎を検知して燃料供給を停止させ、未燃燃料の噴出
を防止する本のである。しかし、この炎検知機構が故障
して異常となると、炎検知ｍｓがあたかも炎を検知した
如くとなって燃料が供給されるため点火前に多量の未燃
燃料が噴出する恐れがあり九。The flame detection mechanism detects when a flame goes out for some reason during combustion and stops the fuel supply to prevent unburned fuel from spewing out. However, if this flame detection mechanism malfunctions and becomes abnormal, the flame detection ms will act as if it has detected a flame and fuel will be supplied, so there is a risk that a large amount of unburnt fuel will spout out before ignition.
本発明は上記の点に鑑みて為されたもので、点火動作以
前での炎検知機構による検知電流が成るレベルを超えた
時燃料供給通路を遮断する遮断手段を設けるとともに前
記検知電流が前記レベルを超えない時に前記遮断手段を
作動不能とする解除手段を設置ることによシ、上記従来
の不都合を解消するものである。The present invention has been made in view of the above points, and includes a cutoff means that cuts off the fuel supply passage when the current detected by the flame detection mechanism exceeds the level before the ignition operation, and the detected current is set to the level. The above-mentioned conventional inconvenience is solved by providing a release means that disables the cut-off means when the voltage does not exceed the limit.
以下本発明の１実施例を第１図乃至第３図に基づいて説
桐する。図において、１社燃焼状態を検出するセンナ、
２は炎検知１路、３Ｆｉセンサ１によ〉検出された燃焼
状態に応じて所望の燃焼状態とするための各種の処理を
行なうマイクルコンピュータで、Ｎ示しない点火手段の
動作直前に炎検知−路２の検知電流を例えに内蔵され九
アナログ／デジタル変換機能を介してデジタル値として
取込み、記憶されたあるレベルの電流値と電圧に変換し
て比較しこの電流値以上と判定すれに炎検知回路２の異
常と判断して後述するリレー６を介して燃料供給通路に
介在する電磁弁を遮断する。またマイクロコンピュータ
３紘検知電流が前記電流値未満と判定とした時に前記遮
断動作不能とする解除手段としても機能する。４＃ｉマ
イクロコンピユータ３を動作開始させる操作キー、５は
マイクロコンピュータ３によ多制御されるリレー駆動回
路、６絋リレ一駆動回路５を介してマイクロコンピュー
タ３によ多制御されるリレーで、石油ストーブ等暖房装
置の燃料供給通路に介在する電磁弁を遮断制御する。１
はマイクロコンピュータ３によ多制御される表示部駆動
回路、８は表示部駆動回路１を介してマイクロコンピュ
ータ３によ多制御される表示部で、燃焼状態を表示する
。An embodiment of the present invention will be explained below based on FIGS. 1 to 3. In the figure, one senna detects the combustion state,
2 is a microcomputer that performs various processes to achieve a desired combustion state according to the combustion state detected by the flame detection circuit 3; For example, the detected current of path 2 is taken in as a digital value through the built-in analog/digital conversion function, converted to a voltage with a stored current value, and compared, and flame is detected when the current value is determined to be greater than this value. It is determined that there is an abnormality in the circuit 2, and a solenoid valve interposed in the fuel supply passage is shut off via a relay 6, which will be described later. It also functions as a release means for disabling the interrupting operation when it is determined that the current detected by the microcomputer 3 is less than the current value. 4#i is an operation key for starting the operation of the microcomputer 3; 5 is a relay drive circuit that is controlled by the microcomputer 3; 6 is a relay that is controlled by the microcomputer 3 via the drive circuit 5; Controls the interruption of solenoid valves in the fuel supply passages of heating devices such as kerosene heaters. 1
Reference numeral 8 indicates a display section drive circuit which is controlled by the microcomputer 3, and 8 indicates a display section which is controlled by the microcomputer 3 via the display section drive circuit 1, and displays the combustion state.
次に作用を説明する。Next, the effect will be explained.
図示しないメインスイッチをオンとすると、石油ストー
ブ等暖房装置の石油をガス化する電動機（図示せず）が
（イ）時点で作動し始め、マイクロコンピュータ３が（
ロ）時点で第２図に示すフローチャートに順じて炎検知
回路２の検知電流を測定部１１で測定し、比較部１２で
測定された電流（検知電流）と記憶された電流値とを比
較する。When the main switch (not shown) is turned on, an electric motor (not shown) for gasifying oil in a heating device such as an kerosene stove starts operating at point (a), and the microcomputer 3 starts operating at point (a).
b) At the time point, the detection current of the flame detection circuit 2 is measured by the measurement unit 11 according to the flowchart shown in FIG. 2, and the comparison unit 12 compares the measured current (detection current) with the stored current value. do.
この比較がＱう時点で終了し検知電流が前記電流値以上
と判定されたら炎検知回路２を異常状態とみなし、リレ
ー駆動回路５を介してリレー６がオフとなる。従って、
燃料供給通路の電磁弁が遮断され、燃料供給が停止する
。また、この時表示部８にはマイクロコンピュータ３か
らの指令によシ炎検知回路２の異常が表示される。If this comparison ends at the point Q and the detected current is determined to be greater than the current value, the flame detection circuit 2 is deemed to be in an abnormal state, and the relay 6 is turned off via the relay drive circuit 5. Therefore,
The solenoid valve in the fuel supply passage is shut off, stopping fuel supply. Further, at this time, an abnormality in the flame detection circuit 2 is displayed on the display section 8 according to a command from the microcomputer 3.
一方、比較ｓ１２でイオン電流が記憶された電流値未満
と判定されると、マイクロコンピュータ３は炎検知回路
２が正常であるとみなし、炎検知回路２の出力を炎によ
るイオン電流として処理し始めるフローに移シ、に）時
点で燃料供給通路に介在する電磁弁を開放する指令を出
して燃料を噴出させるとともに点火手段を点火動作させ
る。そして、この点火動作によυ炎かけ）時点で形成さ
れると炎検知回路２社（へ）時点でイオン電流を検知す
るとともにマイクロコンピュータ３がこれによシ着火を
検知して点火手段の点火動作を（へ）時点で停止させる
。On the other hand, if the ionic current is determined to be less than the stored current value in comparison s12, the microcomputer 3 considers that the flame detection circuit 2 is normal and starts processing the output of the flame detection circuit 2 as an ionic current due to flame. At the point in time when the flow starts, a command is issued to open the electromagnetic valve interposed in the fuel supply passage, thereby causing the fuel to be jetted out and the ignition means to be ignited. When the flame is formed by this ignition operation, the flame detection circuit 2 detects the ion current and the microcomputer 3 detects the ignition and ignites the ignition means. Stop the operation at (to) point.
以上説明したように本発明によれに点火動作以前での炎
検知機構による検知電流が成るレベルを超えた時燃料供
給通路を遮断する遮断手段を設けるとともに前記検知電
流が前記レベルを超えない時に前記遮断手段を作動不能
とする解除手段を設けたので、炎検知機構が異常になり
九としても点火前に未燃焼の燃料が噴出されることはな
い。As explained above, according to the present invention, there is provided a cutoff means that cuts off the fuel supply passage when the current detected by the flame detection mechanism before the ignition operation exceeds the level, and when the detected current does not exceed the level, the cutoff means is provided. Since the release means for disabling the shutoff means is provided, even if the flame detection mechanism becomes abnormal, unburned fuel will not be ejected before ignition.
第１図は本発明の１実施例である燃焼装置の概略制御ブ
ロック図、第２図は同上ブロック図のマイクロコンピュ
ータに組込まれた炎検知回路の異常判定フローチャート
、第３ 、ＩＩ （Ａ） Ｂ同上装置の電動機の作動特
性図、第３図（Ｂ）は同上装置の電磁弁の作動特性図、
第３図（Ｃ） ａ点火手段の作動特性図、第３図（Ｄ）
は形成される炎の状態翻、第３図（Ｅ）は炎検知回路の
異常検出の時期を示す図、第３図（Ｆ） Ｕ炎検知回路
の炎検知状態を示す図である。
２−炎検知回路 ３−マイクロコンピュータ５・・・
リレー駆動回路 ６・・・リレー代理人葛野信−（ほ
か１名）
第１図
竿３．．７、
第２図
１３１−Fig. 1 is a schematic control block diagram of a combustion device that is an embodiment of the present invention, Fig. 2 is a flowchart for determining an abnormality of the flame detection circuit built into the microcomputer shown in the same block diagram, and Part 3, II (A) B Fig. 3 (B) is a diagram of the operating characteristics of the electric motor of the same device;
Figure 3 (C) a Operation characteristics diagram of the ignition means, Figure 3 (D)
FIG. 3(E) is a diagram showing the timing of abnormality detection in the flame detection circuit, and FIG. 3(F) is a diagram showing the state of flame detection in the flame detection circuit. 2-Flame detection circuit 3-Microcomputer 5...
Relay drive circuit 6... Relay agent Makoto Kuzuno (and 1 other person) Figure 1 Rod 3. ．． 7. Figure 2 131-
Claims (1)
を供給し続ゆる燃焼装置において、前記点火手段の点火
動作以前の前記炎検知機構による検知電流が成るレベル
を超えた時燃料供給通路を遮断継続する遮断手段を設置
るとともに前記検知電流が前記レベルを超えない時に前
記遮断手段を作動不能とする解除手段を設けたことを特
徴とする炎検知機構の異常検出機能付燃焼装置。In a combustion device that continues to supply fuel after ignition by an ignition means is detected by a flame detection mechanism, when the current detected by the flame detection mechanism before the ignition operation of the ignition means exceeds a level, the fuel supply passage is opened. A combustion apparatus with an abnormality detection function for a flame detection mechanism, characterized in that a cutoff means that continues to cut off is provided, and a release means is provided that makes the cutoff means inoperable when the detected current does not exceed the level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57040406A JPS58158424A (en) | 1982-03-15 | 1982-03-15 | Combustion equipment having abnormality detecting function for flame detecting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57040406A JPS58158424A (en) | 1982-03-15 | 1982-03-15 | Combustion equipment having abnormality detecting function for flame detecting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58158424A true JPS58158424A (en) | 1983-09-20 |
Family
ID=12579774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57040406A Pending JPS58158424A (en) | 1982-03-15 | 1982-03-15 | Combustion equipment having abnormality detecting function for flame detecting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58158424A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6349625A (en) * | 1986-08-20 | 1988-03-02 | Matsushita Electric Ind Co Ltd | Combustion control device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4958431A (en) * | 1972-10-05 | 1974-06-06 | ||
| JPS5575125A (en) * | 1978-11-30 | 1980-06-06 | Yamatake Honeywell Co Ltd | Checking apparatus for starting safety |
-
1982
- 1982-03-15 JP JP57040406A patent/JPS58158424A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4958431A (en) * | 1972-10-05 | 1974-06-06 | ||
| JPS5575125A (en) * | 1978-11-30 | 1980-06-06 | Yamatake Honeywell Co Ltd | Checking apparatus for starting safety |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6349625A (en) * | 1986-08-20 | 1988-03-02 | Matsushita Electric Ind Co Ltd | Combustion control device |
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