JPS58124119A - Combustion device - Google Patents
Combustion deviceInfo
- Publication number
- JPS58124119A JPS58124119A JP57007044A JP704482A JPS58124119A JP S58124119 A JPS58124119 A JP S58124119A JP 57007044 A JP57007044 A JP 57007044A JP 704482 A JP704482 A JP 704482A JP S58124119 A JPS58124119 A JP S58124119A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- temperature
- disconnection
- comparator
- 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
- F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
- F23N5/203—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
- F23N2225/18—Measuring temperature feedwater temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2231/00—Fail safe
- F23N2231/20—Warning devices
-
- 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
- F23N5/14—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermo-sensitive resistors
-
- 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)
- Control Of Combustion (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は燃焼装置の温度制御回路に関するもので、気化
ヒータ温度検知用素子及び湯温検知用素子が断線時作動
する断線検知回路の出力を１つのタイマー回路により夫
々所定時間オフさせる様にし、夫々の温度検知部の雰囲
気温度が極端に低下した場合でも、断線検知回路が誤作
動しない様にしたものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a temperature control circuit for a combustion device, in which the output of a disconnection detection circuit that is activated when a vaporization heater temperature detection element and a hot water temperature detection element are disconnected is determined by a single timer circuit. The disconnection detection circuit is configured to be turned off for a certain period of time to prevent the disconnection detection circuit from malfunctioning even if the ambient temperature of each temperature detection section drops extremely.
従来この種の燃焼装置に於ける温度制御回路は温度検知
部の温度が極端に低下した場合、その検知素子として用
いたサーミスタの抵抗値が極端に大きくなり、断線状態
との見極めが非常に困難である為、所定時間、断線検知
回路の出力をオフ状態にさせ、その間ヒータ通電及び燃
焼させることにより、サーミスタ部の温度をある程度上
昇させ、その後断線か否かを検出させていた。従来はこ
の所定時間、断線検知回路をオフさせる為のタイマー回
路を気化ヒータ部温度検知用及び湯温検知用として、そ
れぞれ構成していた為、非常に高価で３ ページ
回路も複雑になるものであった。Conventionally, in the temperature control circuit of this type of combustion equipment, when the temperature of the temperature detection part drops extremely, the resistance value of the thermistor used as the detection element becomes extremely large, making it extremely difficult to determine whether it is a disconnection state. Therefore, the output of the disconnection detection circuit is turned off for a predetermined period of time, and the heater is energized and burned during that time to raise the temperature of the thermistor part to a certain extent, and then it is detected whether or not there is a disconnection. Conventionally, a timer circuit for turning off the disconnection detection circuit for a predetermined period of time was configured for detecting the temperature of the evaporative heater section and for detecting the temperature of the hot water, which was extremely expensive and required a complicated 3-page circuit. there were.
本発明はこの様な従来の不具合点を解消する為になされ
たもので、１つのタイマー回路にょシ、気化ヒータ用及
び湯温検知用の断線検知回路の出力を所定時間オフさせ
る様にするものである。The present invention has been made to solve these conventional problems, and is designed to turn off the output of one timer circuit, a disconnection detection circuit for the vaporization heater, and a disconnection detection circuit for detecting hot water temperature for a predetermined period of time. It is.
以下本発明の一実施例を図面と共に説明する。An embodiment of the present invention will be described below with reference to the drawings.
１は制御用！源、２は警報回路、３は前記警報回路２の
作動で開となる常閉接点、４は液体燃料バーナの気化ヒ
ータ部の気化ヒータ温度検出用サーミスタ、６〜１０は
検出温度設定用抵抗、１１〜１３は比較器で、１１が過
昇防止用、１２が温度制御用、１３が断線検知用である
。１４は上記気化ヒータ駆動回路、１５は論理和回路で
前記過昇防止用の比較器１１と断線検知用の比較器１３
の出力状態によりその出力を決定する。１６は論理積回
路、１７はダイオード、１８は抵抗で、この′Ｓ″
１６〜１８１の部品、自己保持回路を構成し、運転初期
バーナ温度が低い時は後段の湯温サーモ回路をオフ状態
とし、設定温度に達した後は、前記オフ信号を解除し、
電源がなくなるまで、その状理積回路１６の出方で作動
する。２０．２１はダイオード、２２はトランジスタ、
２３はタイマー回路で、各断線検知回路の動作を所定時
間内停止させる。２４は抵抗、２５はコンデンサで前記
タイマー回路２３の時間設定用である。２６はダイオー
ド、２７は湯温検知用サーミスタ、２８〜３３は各検出
温度設定用抵抗、３４〜３６は比較器で、３４が過昇防
止用、３５が湯温制御用、３６が断線検知用である。３
７は抵抗、３８はコンデンサでプリパージタイム設定用
、３９は論理積回路、４０は論理和回路、４１．４２は
駆動回路、４３は燃焼制御回路である。1 is for control! 2 is an alarm circuit; 3 is a normally closed contact that opens when the alarm circuit 2 is activated; 4 is a thermistor for detecting the vaporization heater temperature of the vaporization heater section of the liquid fuel burner; 6 to 10 are resistances for setting the detection temperature; 11 to 13 are comparators, 11 is for overheating prevention, 12 is for temperature control, and 13 is for wire breakage detection. 14 is the vaporization heater drive circuit, 15 is an OR circuit, and includes the comparator 11 for preventing overheating and the comparator 13 for detecting disconnection.
Its output is determined by the output state of . 16 is an AND circuit, 17 is a diode, and 18 is a resistor, and the components 16 to 181 of this 'S'' constitute a self-holding circuit, and when the initial burner temperature is low, the subsequent hot water temperature thermo circuit is turned off. , after reaching the set temperature, release the off signal,
The output of the state product circuit 16 operates until the power supply runs out. 20.21 is a diode, 22 is a transistor,
23 is a timer circuit that stops the operation of each disconnection detection circuit within a predetermined period of time. 24 is a resistor, and 25 is a capacitor for setting the time of the timer circuit 23. 26 is a diode, 27 is a thermistor for detecting hot water temperature, 28 to 33 are resistors for setting each detection temperature, 34 to 36 are comparators, 34 is for overheating prevention, 35 is for hot water temperature control, and 36 is for disconnection detection. It is. 3
7 is a resistor, 38 is a capacitor for pre-purge time setting, 39 is an AND circuit, 40 is an OR circuit, 41, 42 is a drive circuit, and 43 is a combustion control circuit.
以上の様な構成を有する制御回路に於いて、その動作を
説明すると、まず電源投入すると、バーナ温度は低い為
、気化ヒータ温度検出用サーミスタ４の抵抗値は非常に
大きな値となシ、比較器１２及び１３は一人力く十人力
の関係となり、その出力は１状態となる。比較器１２の
出力１により、気化ヒータ駆動回路１４に信号を供給し
、動作状５ページ
態にする。同時に論理積回路１６の入力を１とし、出力
１により、トランジスタ１９をオン、又ダイておく。更
にダイオード２１を介して、タイマー回路２３のリセッ
ト端子を１としタイマー回路作動させ出力を１とする。To explain the operation of the control circuit with the above configuration, first, when the power is turned on, the burner temperature is low, so the resistance value of the thermistor 4 for vaporizing heater temperature detection becomes a very large value. The vessels 12 and 13 have a relationship of one person's power and ten people's power, and their output is in one state. The output 1 of the comparator 12 supplies a signal to the vaporization heater drive circuit 14 to set the operating state to the 5-page mode. At the same time, the input of the AND circuit 16 is set to 1, and the output 1 turns on the transistor 19 and turns it on. Further, via the diode 21, the reset terminal of the timer circuit 23 is set to 1, thereby activating the timer circuit and setting the output to 1.
これにょシトランジスタ２２はオンとなる。又、比較器
１３の出力１により、論理和回路１５の入力が１になろ
うとする訳であるが、前記トランジスタ１９．２０のオ
ンにより、その入力は０状態となシ、出力も０となる。At this time, transistor 22 is turned on. In addition, the output of the comparator 13, which is 1, causes the input of the OR circuit 15 to become 1, but as the transistors 19 and 20 are turned on, the input becomes 0, and the output also becomes 0. .
即ち、駆動回路４１へは信号が供給されない為、警報回
路２は動作せず、気化ヒータ駆動回路１４の動作が継続
される。万一この時点でサーミスタ４が断線の場合は、
抵抗２４．コンデンサ２５で定まる設定時間経過後マイ
マー回路２３の出力は０となシ、トランジスタ２２が一
↓４する。即ち論理和回路１５の入力０状態ロツクが解
除され、比較器１３の出力１によシ論理和回路１６の出
力は１となり警報回路２が作動する。That is, since no signal is supplied to the drive circuit 41, the alarm circuit 2 does not operate, and the vaporization heater drive circuit 14 continues to operate. If thermistor 4 is disconnected at this point,
Resistance 24. After the set time determined by the capacitor 25 has elapsed, the output of the mimer circuit 23 becomes 0, and the output of the transistor 22 becomes 1↓4. That is, the input 0 state lock of the OR circuit 15 is released, and the output of the OR circuit 16 becomes 1 due to the output 1 of the comparator 13, and the alarm circuit 2 is activated.
６ベー；゛
しかし正常時は気化ヒータ部の温度が上昇すると、まず
比較器１３が一人力〉十人力となり出力０゜即ちトラン
ジスタ１９．２２がオフになった場合でも論理和回路１
６の入力は０のままである為、警報回路２は動作せず正
常動作を継続する。更に気化ヒータ部の温度が上昇する
と、比較器１２の出力が０に反転、これにより気化ヒー
タ駆動回路１４をオフにすると共に、論理積回路１６の
入力を０状態とし、出力０にする。又、ダイオード１７
゜抵抗１８によシ自己保持回路を形成し、以降、入力状
態の変化に関係なく、出力０状態を保持し続ける。又、
論理積回路１６の出力０により、湯温サーモ回路のオフ
ロックを解除し、後段回路を動作状態とする。更にタイ
マー回路２３のリセット端子を０とし、初期の状態にセ
ットする。これにより、トランジスタ１９はオフとなり
、論理和回路１５０入力Ｏ状態ロツクを解除し、以降比
較器１３の出力状態により、制御される０即ち、断線検
知可能となる訳である。次に湯温サーモ回路も前記動作
と同様、バーナで加熱された湯温か極端に低い時は、サ
ーミスタ２７の抵抗値が非常に大きな値となる為、比較
器３６は出力１となる。即ち断線状態と判断する訳であ
るが、実際は正常であり、この時点で警報回路２を作動
させるのは好ましくない。この為、タイマー回路２３に
より、トランジスタ２２をオンさせ、比較器３６の出力
即ち、論理和回路４ｏの入力を０にしておく。6; However, under normal conditions, when the temperature of the evaporative heater rises, the comparator 13 first becomes powered by one person, and the output becomes 0 degrees, that is, even if the transistors 19 and 22 are turned off, the OR circuit 1
Since input 6 remains at 0, alarm circuit 2 does not operate and continues normal operation. When the temperature of the vaporization heater section further rises, the output of the comparator 12 is inverted to 0, thereby turning off the vaporization heater drive circuit 14 and setting the input of the AND circuit 16 to the 0 state, resulting in an output of 0. Also, diode 17
A self-holding circuit is formed by the resistor 18, and thereafter, the output 0 state is maintained regardless of changes in the input state. or,
With the output 0 from the AND circuit 16, the off-lock of the hot water temperature thermo circuit is released, and the subsequent circuit is brought into operation. Further, the reset terminal of the timer circuit 23 is set to 0 to set it to the initial state. As a result, the transistor 19 is turned off, releasing the O-state lock on the input of the OR circuit 150, and from then on, it becomes possible to detect 0, that is, a disconnection, which is controlled by the output state of the comparator 13. Next, the hot water temperature thermocircuit operates similarly to the above operation, when the temperature of the hot water heated by the burner is extremely low, the resistance value of the thermistor 27 becomes a very large value, so the comparator 36 outputs 1. That is, although it is determined that the wire is disconnected, it is actually normal, and it is not preferable to activate the alarm circuit 2 at this point. For this reason, the transistor 22 is turned on by the timer circuit 23, and the output of the comparator 36, that is, the input of the OR circuit 4o is set to 0.
次に比較器３５の出力１によシ、抵抗３７を介して、コ
ンデンサ３８へ充電が開始される。この充電電圧が論理
積回路３９の入力しきい値を超えると、出力は１となり
、燃焼制御回路４３へ信号を供給し、バーナでの燃焼動
作へ入る。同時にダイオード２６を介して、タイマー回
路２３のリセクト端子を再度１とし、タイマー動作を開
始させ、抵抗２４．コンデンサ２５で定まる時間内、ト
ランジスタ２２をオンとし、論理和回路４０の入力をＯ
にしておく。この間に燃焼により湯温７５；上昇し、比
較器３６の出力は０に反転する為、タイマー回路２３が
タイムアツプ後、トランジスタ２２がオフし、論理和回
路４０の入力０状態ロツク力よである。以降、断線事故
が発生した場合は、比較器３６により即時検出し、論理
和回路４０．駆動回路４２によシ警報回路２を作動させ
る。又、初期より断線事故のあった場合も前記同様タイ
マー回路２３のタイムアンプと同時に警報回路２を作動
させ、全回路停止させる。Next, due to the output 1 of the comparator 35, charging of the capacitor 38 is started via the resistor 37. When this charging voltage exceeds the input threshold of the AND circuit 39, the output becomes 1, a signal is supplied to the combustion control circuit 43, and the burner starts the combustion operation. At the same time, the reset terminal of the timer circuit 23 is set to 1 again via the diode 26 to start the timer operation, and the resistor 24. The transistor 22 is turned on within the time determined by the capacitor 25, and the input of the OR circuit 40 is turned off.
Keep it. During this time, the hot water temperature rises by 75% due to combustion, and the output of the comparator 36 is inverted to 0. Therefore, after the timer circuit 23 times up, the transistor 22 is turned off, and the input 0 state of the OR circuit 40 is locked. Thereafter, if a disconnection accident occurs, it is immediately detected by the comparator 36, and the OR circuit 40. The alarm circuit 2 is activated by the drive circuit 42. Further, even if there is a disconnection accident from the beginning, the alarm circuit 2 is activated at the same time as the time amplifier of the timer circuit 23, and all circuits are stopped.
以上の様に本発明によると、気化ヒータ温度検知用及び
湯温検知用サーミスタの低温時に於ける断線検知回路の
誤動作防止の為、所定時間、各断線検知回路の出力をオ
フ状態とさせるタイマー回路を１つのタイマー回路で共
用させる為、安価で回路も簡単なものとなる。As described above, according to the present invention, a timer circuit turns off the output of each disconnection detection circuit for a predetermined period of time in order to prevent malfunction of the disconnection detection circuit when the thermistor for vaporizing heater temperature detection and water temperature detection thermistor is low temperature. Since these are shared by one timer circuit, the circuit becomes inexpensive and simple.
図は本発明の一実施例を示す回路図である。
４・・・・・・気化ヒータ温度検出用サーミスタ、１１
．３４・−・・・・比較器（過昇防止用）、１２゜３６
・−・−・・・比較器（温度制御用）、１３．３６・・
−・・・・・比較器（断線検知用）、２３・・・・・・
タイマー回路。The figure is a circuit diagram showing one embodiment of the present invention. 4... Thermistor for vaporization heater temperature detection, 11
．． 34.--Comparator (for over-rise prevention), 12゜36
・---Comparator (for temperature control), 13.36...
-... Comparator (for disconnection detection), 23...
timer circuit.
Claims (1)
断線検知を行わせる様に構成したサーモ回路を夫々、液
体燃料バーナの気化ヒータ温度検出用と上記液体燃料バ
ーナで加熱される湯温検出セット端子に、前記気化ヒー
タ温度制御用回路の出力信号により作動する自己保持回
路の出力とプ了 ン ト・ リバージタイマー回路の出力を一嚇−回路を介して接続
し、且つ、前記自己保持回路の出力によシ作動するスイ
ッチング回路の出力を気化ヒータ用断線検知回路の出力
に、又、前記タイマー回路の出力によシ作動するスイッ
チング回路の出力を湯温検知用断線検知回路の出力に接
続し、一つのタイマー回路で気化ヒータ用及び湯温検知
用の断線検知回路の出力を運転開始初期所定時間オフさ
せ２ページ る構成とした燃焼装置。[Claims] One temperature detection element can control temperature, detect excessive temperature rise, and
A thermo circuit configured to detect a disconnection is connected to a set terminal for detecting the vaporizing heater temperature of the liquid fuel burner and a temperature detecting terminal for the temperature of hot water heated by the liquid fuel burner, respectively, according to the output signal of the vaporizing heater temperature control circuit. The output of the activated self-holding circuit and the output of the print reversion timer circuit are connected via an alarm circuit, and the output of the switching circuit activated by the output of the self-holding circuit is connected to the vaporization heater. The output of the switching circuit operated by the output of the timer circuit is connected to the output of the disconnection detection circuit for water temperature detection, and the output of the disconnection detection circuit for water temperature detection is connected to the output of the disconnection detection circuit for evaporative heater and hot water temperature detection with one timer circuit. A combustion device configured to turn off the output of a disconnection detection circuit for a predetermined period of time at the beginning of operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57007044A JPS58124119A (en) | 1982-01-19 | 1982-01-19 | Combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57007044A JPS58124119A (en) | 1982-01-19 | 1982-01-19 | Combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58124119A true JPS58124119A (en) | 1983-07-23 |
Family
ID=11655046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57007044A Pending JPS58124119A (en) | 1982-01-19 | 1982-01-19 | Combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58124119A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61106756U (en) * | 1984-12-12 | 1986-07-07 |
-
1982
- 1982-01-19 JP JP57007044A patent/JPS58124119A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61106756U (en) * | 1984-12-12 | 1986-07-07 |
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