JPS59173628A - Combustion control device - Google Patents
Combustion control deviceInfo
- Publication number
- JPS59173628A JPS59173628A JP58046405A JP4640583A JPS59173628A JP S59173628 A JPS59173628 A JP S59173628A JP 58046405 A JP58046405 A JP 58046405A JP 4640583 A JP4640583 A JP 4640583A JP S59173628 A JPS59173628 A JP S59173628A
- Authority
- JP
- Japan
- Prior art keywords
- microcomputer
- output
- flame
- transistor
- solenoid valve
- 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
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
- F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements 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
- F23N5/00—Systems for controlling combustion
- F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
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)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明はガス器具等燃焼器の燃焼制碗な行なうもので、
特にマイクロコンビ１−夕を用いた燃焼制御装置に関す
る。[Detailed description of the invention] (a) Industrial application field The present invention is for controlling the combustion of a combustor such as a gas appliance.
In particular, the present invention relates to a combustion control device using a microcombination unit.
（ロ）従来技術
湯沸器、調理器等のバーナの点滅開側を行なう燃焼制御
装置で、特にマイクロコンピュータを用いたものでは、
電界効果型トランジスタ（以下ＦＥＴと称す）等を用い
、例えば炎の整流作用を利用して炎の有無を検出する炎
検出回路を少なくとも一対設け、その出力をマイクロコ
ンピュータの入力に各々接続していた。その為マイコン
の暴走、グロック停止時マイコン自体の故障時には、炎
の有無に関係なく燃料供給を制御する電磁弁が開いたま
まとなる等安全動作を行なえなくなる可能性がある。(b) Prior art Combustion control devices that blink and open burners in water heaters, cookers, etc., especially those using a microcomputer,
At least one pair of flame detection circuits were installed, using field effect transistors (hereinafter referred to as FETs), etc., to detect the presence or absence of a flame by using, for example, the rectification of the flame, and their outputs were each connected to the input of a microcomputer. . Therefore, if the microcomputer goes out of control or the microcomputer itself malfunctions when the Glock is stopped, there is a possibility that the solenoid valve that controls fuel supply will remain open regardless of the presence or absence of a flame, making it impossible to perform safe operations.
し→ 発明の目的
本発明は上記の問題点に鑑み、マイコンの出力に関係な
く少なくとも失火時には燃料供給用の電磁弁を閉じて安
全側動作を行なう事を目的とする。Purpose of the Invention In view of the above problems, it is an object of the present invention to perform a safe operation by closing a fuel supply solenoid valve at least in the event of a misfire, regardless of the output of the microcomputer.
に）発明の構成
本発明の構成は、炎の有無を検出する為の炎検出回路を
少なくとも一対有しこの一方の出力をマイクロコンピュ
ータの入力に接続すると共に−このマイクロコンピュー
タの出力にて制御されバーナへの燃料流路を開閉する電
磁弁の通電制御を行なう弁回路を有し、他方の炎検出回
路の出力にて電磁弁の電源回路に設けたスイ呼チング素
子な制御して成るもので、弁回路の回路部品が電磁弁開
放側に故障しても、消火並びに失火時には同時にマイコ
ンが故障しても確実に電磁弁を閉成し安全側動作を行な
い得る。B) Structure of the Invention The structure of the present invention has at least one pair of flame detection circuits for detecting the presence or absence of a flame, the output of one of which is connected to the input of a microcomputer, and the circuit is controlled by the output of this microcomputer. It has a valve circuit that controls the energization of the solenoid valve that opens and closes the fuel flow path to the burner, and the output of the other flame detection circuit controls the switching element installed in the power supply circuit of the solenoid valve. Even if the circuit components of the valve circuit fail to open the solenoid valve, and even if the microcomputer fails at the same time during extinguishing and misfire, the solenoid valve can be reliably closed and safe operation can be performed.
（ホ）実施例
本発明の実施例を図面に基づき説明すると、（１１はス
トアードプログラム方式の４ビイトマイコン（２）を用
いたガスオーブン制御用の制御回路で、電源人力ＶＳ８
を図示しない直流電源のグランドＣ：接続し、電源人力
ＶＧＧに同じくマイナス電源（−１２■前後）を接続す
る。そしてクロック入力ＯＬＤ、ＣＬｌには所定の発振
回路（３）を接続し、ていると共に、−次巻線（４）を
商用の交流電源（５）（二接続したトランス（６）の二
次巻線（７）を用いた交流信号源（８）をガスバーナ（
９）の炎孔ａＱ（二配設したフレームロ９ドＵに接続し
、かつこれをゲートに接続し炎の整流作用による整流信
号到来時に非導通ずるＦＥＴ（１２を主に構成する、周
知の炎検出回路０の出力であるＦＥＴ（１２のシースを
へカニ１に接続している。(E) Embodiment An embodiment of the present invention will be described based on the drawings. (11 is a control circuit for controlling a gas oven using a stored program type 4-bit microcomputer (2);
is connected to the ground C of the DC power supply (not shown), and the negative power supply (around -12■) is also connected to the power supply VGG. A predetermined oscillation circuit (3) is connected to the clock inputs OLD and CLl, and the negative winding (4) is connected to the secondary winding of a transformer (6) connected to a commercial AC power supply (5). The AC signal source (8) using the line (7) is connected to the gas burner (
A well-known FET (mainly comprising FET 12) is connected to the flame hole aQ (2) of 9) and connected to the gate, which is connected to the gate and becomes non-conductive when a rectification signal arrives due to the rectification effect of the flame. The sheath of FET (12) which is the output of flame detection circuit 0 is connected to Hekani 1.
Ｉは上記と同じ構成から成る他の炎検出回路で。I is another flame detection circuit consisting of the same configuration as above.
その出力であるＦＥＴ（１５１のソースにダイオード（
ＬＤを介して抵抗（ＬＤ（国とコンデンサα９から成る
ＯＲタイマー（イ）を接続していると共Ｃ二、このタイ
マーのコンデンサ（１１には放電用ダイオード（２１１
を介して常開の第１タイマスイダチ（２２１を接続し、
かつこのタイマスイ呼チは入カニ２に接続してこれより
調理動作を取り込んでいる。A diode (
An OR timer (A) consisting of a resistor (LD) and a capacitor α9 is connected through the LD, and a discharge diode (211) is connected to the capacitor (11) of this timer.
Connect the normally open first timer Suidachi (221) through
Moreover, this timer switch is connected to the input crab 2 and takes in the cooking operation from this.
（２段は上記がスパーカ（９）への燃料流路（２４１に
直列に介装した一対の電磁弁（２知０への通電制御を行
なう弁回路で、交流電源（５）に常開の第２タイマヌイ
呼チ（２７）並びにスイザチング累子である常開のリレ
ー接点（２４を介して接続した整流器（２９１に一方の
電磁弁（ハ）の電磁コイル（２４を接続していると共に
二、他方の電磁弁（２０の電磁コイル（２所をスイヴチ
ング用のトランジスタ（至）を介して接続している。又
このトランジスタのベースにはフォトトランジスタ６１
１のエミダタ出力ヲ接続しており、そしてこのフォトト
ランジスタと対のＬＥＤ（至）はベースをマイコン（２
）の出力０１に接続したトランジスタＱのコレクタＣニ
接続している。（２）は上記リレー接点−を有したリレ
ーで、ベースをツェナーダイオード図を介して上記タイ
マー（２０１１ｍ接続したトランジスタ（至）にて制御
されるトランジス外相：で駆動される。(The second stage is a valve circuit that controls the energization to the fuel flow path (241) connected to the sparker (9) in series. The electromagnetic coil (24) of one electromagnetic valve (c) is connected to the rectifier (291) which is connected via the normally open relay contact (24) which is the second timer coil (27) and the switch. The other electromagnetic valve (20 electromagnetic coils) is connected via a switching transistor (to). Also, a phototransistor 61 is connected to the base of this transistor.
The emitter data output of 1 is connected, and the LED (to) paired with this phototransistor has its base connected to the microcomputer (2
) is connected to the collector C of the transistor Q connected to the output 01 of the transistor Q. (2) is a relay having the above-mentioned relay contact, whose base is driven by the above-mentioned timer (transistor external phase controlled by the transistor connected to 2011m) through a Zener diode diagram.
ｃｒａは放電用のダイオードで、負荷の温度検出回路等
に接続され、負荷が設定温度【二連するとこれを介して
コンデンサα９を放電させ電磁弁（２ωを閉じて湿度制
卸を行なう。cra is a discharge diode, which is connected to the temperature detection circuit of the load, etc., and when the load is at the set temperature [2], it discharges the capacitor α9 through this and closes the solenoid valve (2ω) to control humidity.
而して第１タイマスイヴチ（２２１を開くと共に第２タ
イマスイヴチ（２７＋を閉じて調理を開始すると、タイ
マー■のコンデンサ（１１は充電されていないのでトラ
ンジスタ時がオフしてトランジスタ（至）をオンし、リ
レー（至）Ｃ：通電されてリレー接点（至）を閉じるの
で第１電磁弁能が開く。又同時に一定時間出力０１はハ
イとなりトランジスタＱをオンしてＬＥＯ■に通電し、
フォトトランジスタ３１Ｊをオンして第２電磁弁（イ）
を開きがスパーカ（９）に燃料供給して点火動作を行な
う。この時点火しなければ出力０１はローとなりトラン
ジスタ時をオフしてＬＥＤ（至）への通電を停止し第２
電磁弁■を閉じる。又同時にタイマー磯のコンデンサα
渇が充電されてツェナーダイオードＣ３４１のしきい値
以上に成るとトランジスタ（至）がオンしてトランジス
タωをオフし、リレー弼への通電を停止してリレー接点
（房を開き第１電磁弁のも閉じる。Then, when you open the first timer switch (221) and close the second timer switch (27+) to start cooking, the timer capacitor (11 is not charged, so the transistor time turns off and the transistor (to) turns on. Relay (to) C: When energized, the relay contact (to) is closed, so the first solenoid valve opens.At the same time, output 01 becomes high for a certain period of time, turning on transistor Q and energizing LEO■.
Turn on the phototransistor 31J and open the second solenoid valve (a)
The opening supplies fuel to the sparker (9) and performs the ignition operation. If there is no ignition at this point, output 01 becomes low, turning off the transistor and stopping power to the LED (to).
Close the solenoid valve ■. At the same time, timer Iso's capacitor α
When the water is charged and exceeds the threshold of the Zener diode C341, the transistor (to) turns on, turns off the transistor ω, stops energizing the relay, and opens the relay contact (opens the first solenoid valve). Also close.
一方点火されるとＦ Ｅ Ｔ （１３ａ５１がカヴトオ
フして有炎信号をへカニ１、Ｉ２に出力すると共に、Ｏ
Ｒタイマー■のコンデンサＵの充電を阻止しトランジス
タ（至）をオフしてトランジスタ（至）を継続してオン
し電磁弁（２５１（２６１を開き続ける。尚出力０１は
上記入力１１．Ｉ２からの信号により一定時間後もハイ
出力となる。On the other hand, when ignited, FET (13a51 turns off and outputs a flame signal to Hekani 1 and I2, and O
It prevents charging of the capacitor U of the R timer ■, turns off the transistor (to), continues to turn on the transistor (to), and keeps the solenoid valve (251 (261) open. Output 01 is connected to the input from the above input 11.I2. Depending on the signal, the output remains high even after a certain period of time.
又マイコンの異常動作区二より失火時（二出力０１がハ
イの時には、他の炎検出回路（１４）のＦＥＴ（１５１
のオンによりＣＲタイマーｃ２■のコンデンサ０が充電
され、ツェナーダイオード（至）のしきい値以上に成る
とトランジスタ（至）がオンしてトランジスタ（至）を
オフし、リレー＠への通電を停止して電磁弁１（２ｅを
閉じ安全側制御を行なう。従ってＯＲタイマー備の設定
時間はバーナ（９）の点火動作時に出力Ｏ１を一定時間
ハイにする時間よりも長く設定する。Also, when there is a misfire due to abnormal operation area 2 of the microcomputer (when output 01 is high, the FET (151) of the other flame detection circuit (14)
When turned on, capacitor 0 of CR timer c2■ is charged, and when the voltage exceeds the threshold of Zener diode (to), transistor (to) is turned on, transistor (to) is turned off, and current to relay @ is stopped. Then, the solenoid valve 1 (2e) is closed to perform safe control. Therefore, the set time of the OR timer is set longer than the time during which the output O1 is kept high for a certain period of time during the ignition operation of the burner (9).
これ≦二より第２電磁弁（イ）駆動用トランジスタ（３
０）がショート故障してもがスバーナ（９）の消火時ぷ
二はリレー（ハ）にて第１、第２亀磁弁（２５１ｆ２６
１を確実に閉弁する。Since this≦2, the second solenoid valve (a) driving transistor (3
0) has a short-circuit failure, but when the Subarna (9) is extinguished, the first and second turtle valves (251f26) are activated by the relay (c).
Make sure to close valve 1.
Ｎ 発明の効果
上記本発明構成Ｃ二より、マイコンの故障Ｃ二より失火
時にも係わらず出力より有炎信号が出力されても他の炎
検出回路の出力ｆ：で直接電磁弁を閉成することで、マ
イコンの不測の異常動作時ｌ二も安全制御を行なうこと
ができると共に、電磁弁駆動用トランジスタのショート
故障に際しても消火時には電磁弁を確実に閉じる。N Effects of the Invention According to the configuration C2 of the present invention, even if a flame signal is output from the output despite a misfire due to microcomputer failure C2, the output f of another flame detection circuit directly closes the solenoid valve. This makes it possible to perform safe control even in the event of an unexpected abnormal operation of the microcomputer, and also to ensure that the solenoid valve is closed when extinguishing the fire even in the event of a short-circuit failure in the solenoid valve driving transistor.
図面は本発明による燃焼制御装置の回路図である。
（２）・・・マイクロコンピュータ、（９）・・・ガス
バーナ。
ｅ１３１（１４１・・・炎検出回路、 （至）・・・弁
回路、 （２４）・・・燃料流路、 （２５１（２６１
・・・電磁弁、 （至）・・・リレー接点。
手 続 補 正 書（方式）
特許庁長官殿
１、事件の表示
昭和５８年特許願第４６４０５ 号
２、発明の名称
燃料制御装置
６、補正をする者
事件との関係 特 許 出 願 人
名体 （１８８）三洋電機株式会社
４、代 理 人 外１名住所 守口市京
阪本通２丁目１８番地
■The drawing is a circuit diagram of a combustion control device according to the present invention. (2)...Microcomputer, (9)...Gas burner. e131 (141... flame detection circuit, (to)... valve circuit, (24)... fuel flow path, (251 (261
... Solenoid valve, (To) ... Relay contact. Procedures Amendment (Method) Commissioner of the Japan Patent Office1, Indication of the case Patent Application No. 46405 of 19822, Name of the invention Fuel control device6, Relationship with the person making the amendment Patent application Personal name ( 188) Sanyo Electric Co., Ltd. 4, 1 other agent Address 2-18 Keihan Hondori, Moriguchi City■
Claims (1)
有しこの一方の出力をマイクロコンピュータの入力に接
続すると共に、このマイクロコンピュータの出力にて制
御されバーナへの燃料流路を開閉する電磁弁の通電制御
を行なう弁回路を有し。 上記他方の炎検出回路の出力にてマイクロコンピュータ
を介することなく電磁弁の電源回路区二設けたスイダチ
ング素子を制御して成る燃焼制御装置。(1) It has at least one pair of flame detection circuits that detect the presence or absence of a flame, the output of one of which is connected to the input of a microcomputer, and the output of this microcomputer controls the opening and closing of the fuel flow path to the burner. It has a valve circuit that controls the energization of the solenoid valve. A combustion control device which uses the output of the other flame detection circuit to control a switching element provided in a power circuit section of a solenoid valve without going through a microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58046405A JPS59173628A (en) | 1983-03-18 | 1983-03-18 | Combustion control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58046405A JPS59173628A (en) | 1983-03-18 | 1983-03-18 | Combustion control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59173628A true JPS59173628A (en) | 1984-10-01 |
Family
ID=12746238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58046405A Pending JPS59173628A (en) | 1983-03-18 | 1983-03-18 | Combustion control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59173628A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61128026A (en) * | 1984-11-27 | 1986-06-16 | Hanshin Electric Co Ltd | Safety circuit for combustion controlling device |
| JPS648045U (en) * | 1987-07-02 | 1989-01-17 |
-
1983
- 1983-03-18 JP JP58046405A patent/JPS59173628A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61128026A (en) * | 1984-11-27 | 1986-06-16 | Hanshin Electric Co Ltd | Safety circuit for combustion controlling device |
| JPH0151741B2 (en) * | 1984-11-27 | 1989-11-06 | Hanshin Electrics | |
| JPS648045U (en) * | 1987-07-02 | 1989-01-17 |
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