JP2578027Y2 - Water heater ignition control device - Google Patents
Water heater ignition control deviceInfo
- Publication number
- JP2578027Y2 JP2578027Y2 JP1992063668U JP6366892U JP2578027Y2 JP 2578027 Y2 JP2578027 Y2 JP 2578027Y2 JP 1992063668 U JP1992063668 U JP 1992063668U JP 6366892 U JP6366892 U JP 6366892U JP 2578027 Y2 JP2578027 Y2 JP 2578027Y2
- Authority
- JP
- Japan
- Prior art keywords
- voltage value
- set time
- igniter
- voltage
- gas 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.)
- Expired - Lifetime
Links
Landscapes
- Control Of Combustion (AREA)
Description
【０００１】[0001]
【産業上の利用分野】火炎検出を熱電対を用いて行い、
熱電対の熱起電力の電圧の大きさを検知し、点火操作時
からの経過時間との関係からイグナイタの作動と電磁ガ
ス弁の開閉を制御し、電源として使用する乾電池の消耗
を少なくすると共に安全確実に着火制御できる湯沸器の
着火制御装置に関するものである。[Industrial application field] Flame detection is performed using a thermocouple,
Detects the magnitude of the thermoelectromotive force voltage of the thermocouple, controls the operation of the igniter and the opening and closing of the electromagnetic gas valve from the relationship with the elapsed time since the ignition operation, and reduces the consumption of the dry battery used as the power supply The present invention relates to an ignition control device for a water heater that can safely and securely control ignition.
【０００２】[0002]
【従来の技術】従来の技術のものにおいては、熱電対の
熱起電力の電圧に着目して、ガス弁を開閉制御するもの
が存するが、イグナイタの作動は熱起電力の立上り速度
とは無関係に、一定時間イグナイタに通電し火花を飛ば
し続けるものであるため、イグナイタの作動時間を短く
設定するとイグナイタにおける消費電力は少なくするこ
とができるが、熱起電力の立上がり速度が遅い場合はそ
の後熱起電力が炎検知レベル電圧に達する場合でも炎検
知レベル電圧に達していないとしてイグナイタへの通電
が停止され電磁ガス弁が閉じて点火できないという問題
点がある。2. Description of the Related Art In the prior art, a gas valve is controlled to open and close by focusing on the voltage of the thermoelectromotive force of a thermocouple, but the operation of an igniter is independent of the rising speed of the thermoelectromotive force. In addition, since the igniter is energized for a certain period of time to keep sparking, the power consumption of the igniter can be reduced by setting the operation time of the igniter short. Even when the electric power reaches the flame detection level voltage, there is a problem that the power supply to the igniter is stopped because the flame detection level voltage has not been reached, the electromagnetic gas valve is closed, and ignition cannot be performed.
【０００３】一方、イグナイタの設定時間を長く設定す
ると熱起電力の立上りが早くすでに炎検知レベル電圧に
達しているにもかかわらず火花を飛ばし続け、電源とし
て使用する乾電池の消耗を大きくするという問題点があ
った。On the other hand, if the set time of the igniter is set to be long, the rise of the thermoelectromotive force is so fast that the spark continues to fly even though the flame detection level voltage has already been reached, thereby increasing the consumption of the dry battery used as the power supply. There was a point.
【０００４】また、熱起電力が炎検知レベル電圧より低
下した時ガス弁を閉じるものは存するが、点火操作時か
ら所定時間経過後に炎検知レベル電圧より低下していな
いが、不完全燃焼防止検知レベル電圧以上にもなってい
ない場合は、電源の電力により電磁ガス弁が開放保持さ
れるため、しばらくは閉じることができなかった。There is a gas valve that closes the gas valve when the thermoelectromotive force drops below the flame detection level voltage. However, the voltage does not drop below the flame detection level voltage after a lapse of a predetermined time from the ignition operation. When the voltage was not higher than the level voltage, the electromagnetic gas valve was kept open by the power of the power supply, and could not be closed for a while.
【０００５】本考案は、従来の技術の有する上記問題点
に鑑みてなされたもので、その目的とするところは、立
上り速度が早い場合は第１設定時間でイグナイタの作動
を停止し、立上り速度が遅い場合は第２設定時間におい
て、又は第１設定時間と第２設定時間との間で炎検知レ
ベル電圧に達した時点でイグナイタを停止し、イグナイ
タへの通電時間を少なくすると共に、点火操作から第２
設定時間及び第３設定時間後の電圧値を検知して、第２
設定時間において炎検知レベル電圧に達していない場合
及び第３設定時間において不完全燃焼防止検知レベル電
圧に達していないときガス弁を閉じるように制御し、安
全確実に着火制御できるようにした湯沸器の着火制御装
置を提供しようとするものである。The present invention has been made in view of the above-mentioned problems of the prior art. It is an object of the present invention to stop the operation of the igniter in a first set time when the rising speed is high, and to increase the rising speed. Is slower, the igniter is stopped at the second set time, or when the flame detection level voltage is reached between the first set time and the second set time, to reduce the energizing time to the igniter and perform the ignition operation. From the second
The voltage value after the set time and the third set time is detected, and the second
When the flame detection level voltage has not been reached in the set time and when the incomplete combustion prevention detection level voltage has not been reached in the third set time, the gas valve is controlled to close so that ignition control can be performed safely and securely. It is intended to provide a device ignition control device.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本考案における湯沸器の着火制御装置は、炎検出を
行う熱電対１と、該熱電対１の熱起電力の電圧が炎検知
レベル電圧である第１電圧値Ｅ1 又は不完全燃焼防止レ
ベル電圧である第２電圧値Ｅ2 に達したか否かを検知す
る電圧比較回路２と、点火操作時にスタートし第１設定
時間Ｔ1 、第２設定時間Ｔ2 、第３設定時間Ｔ3 の３段
階の時間設定ができるタイマー回路３と、前記電圧比較
回路２による検知信号とタイマー回路３による設定時間
とに基づいて、第１設定時間Ｔ1 において熱起電力が第
１電圧値Ｅ1 以上であればイグナイタＩＧを停止し、第
１電圧値Ｅ1 以下であれば第２設定時間Ｔ2 までイグナ
イタＩＧを作動させるイグナイタ回路４とを設け、さら
に、第２設定時間Ｔ2 に第１電圧値Ｅ1 以下であれば電
磁ガス弁Ｍｇを閉止し、第１電圧値Ｅ1 と第２電圧値Ｅ
2 との間であれば第３設定時間Ｔ3 後に第２電圧値Ｅ1
以下のとき電磁ガス弁Ｍｇを閉止し、第２電圧値Ｅ2 以
上であれば電磁ガス弁Ｍｇを開放保持するガス弁制御回
路５を設けたものである。そして、上記イグナイタ制御
回路４を、第１設定時間Ｔ1 に熱起電力が炎検知レベル
電圧である第１電圧値Ｅ1 以上であればイグナイタＩＧ
を停止し、第１電圧値Ｅ1 以下であれば継続してイグナ
イタＩＧを作動させ、第１設定時間Ｔ1 から第２設定時
間Ｔ2 までの間に第１電圧値Ｅ1 以上になった時点でイ
グナイタＩＧを停止させ、第２設定時間Ｔ2 においては
第１電圧値Ｅ1 以下の時もイグナイタＩＧを停止させる
ものを用いてもよい。In order to achieve the above object, a water heater ignition control device according to the present invention includes a thermocouple 1 for detecting a flame, and a thermoelectromotive force voltage of the thermocouple 1 for detecting a flame. a voltage comparator circuit 2 for detecting whether or not reaches the second voltage value E 2 is a first voltage value E 1 or incomplete combustion prevention level voltage is sensed level voltage, the start and the first set time when the ignition operation A timer circuit 3 capable of setting a three-stage time of T 1 , a second set time T 2 , and a third set time T 3 , and a timer circuit 3 based on a detection signal by the voltage comparison circuit 2 and a set time by the timer circuit 3. thermoelectromotive force in 1 set time T 1 is stopped the igniter IG if the first voltage value E 1 or more, an igniter circuit for actuating the igniter IG if the first voltage value E 1 or less up to the second set time T 2 4 and the second set time T 2 If the first voltage value E 1 or less, the electromagnetic gas valve Mg is closed, and the first voltage value E 1 and the second voltage value E
2 , the second voltage value E 1 after the third set time T 3.
Closing the solenoid gas valve Mg in the following situations is provided with a gas valve control circuit 5 for holding-open solenoid gas valve Mg if the second voltage value E 2 or more. When the igniter control circuit 4 determines that the thermal electromotive force is equal to or greater than the first voltage value E 1 that is the flame detection level voltage during the first set time T 1 , the igniter IG is controlled.
The stop, continuously if the first voltage value E 1 or less actuating the igniter IG, becomes the first voltage value E 1 or more during the period from T 1 first set time to T 2 second set time the igniter IG is stopped at the time, in the second set time T 2 may be used as stopping the igniter IG even when the first voltage value E 1 or less.
【０００７】[0007]
【作用】本考案の湯沸器の着火制御装置は前記構成とし
ているから、点火操作をすると、タイマー回路３が作動
し電磁ガス弁Ｍｇが開放され、バーナ６にガスが供給さ
れイグナイタＩＧにより点火される。点火により熱電対
１は加熱され熱起電力を発生し始め、その熱起電力が電
圧比較回路２に入力され、該電圧比較回路２において炎
検知レベル電圧である第１電圧値Ｅ1 又は不完全燃焼防
止検知レベル電圧である第２電圧値Ｅ2 と比較され熱起
電力の電圧値がそれ以上であるか以下であるか検知さ
れ、その検知信号がイグナイタ制御回路４とガス弁制御
回路５に送られる。The ignition control device for a water heater according to the present invention has the above-described configuration. Therefore, when the ignition operation is performed, the timer circuit 3 is operated to open the electromagnetic gas valve Mg, the gas is supplied to the burner 6, and the ignition is performed by the igniter IG. Is done. The thermocouple 1 is heated by the ignition and starts to generate a thermoelectromotive force, and the thermoelectromotive force is input to the voltage comparison circuit 2, where the first voltage value E 1 which is the flame detection level voltage or the incomplete voltage is detected. voltage value is compared with the second voltage value E 2 is a combustion preventing detection level voltage thermoelectromotive force is detected or less than or is greater, in the detection signal igniter control circuit 4 and the gas valve control circuit 5 Sent.
【０００８】イグナイタ制御回路４にはタイマー回路３
における第１設定時間Ｔ1 、第２設定時間Ｔ2 、第３設
定時間Ｔ3 の３段階の設定時間信号が入力され、前記熱
起電力の大きさと設定時間との関係から、第１設定時間
Ｔ1 に熱起電力が第１電圧値Ｅ1 以上であればイグナイ
タＩＧを停止し、第１電圧値Ｅ1 以下であれば第２設定
時間Ｔ2 までイグナイタＩＧを作動させ、その後停止さ
せる。The igniter control circuit 4 includes a timer circuit 3
, A first set time T 1 , a second set time T 2 , and a third set time T 3 are inputted, and the first set time is obtained from the relationship between the magnitude of the thermoelectromotive force and the set time. if the thermal electromotive force in T 1 is at the first voltage value E 1 or more stops igniter IG, it actuates the second set igniter IG until time T 2 when the first voltage value E 1 or less, thereafter stopped.
【０００９】また、前記電圧比較回路２からの検知信号
とタイマー回路３からの設定時間信号がガス弁制御回路
５に入力され、熱起電力と設定時間との関係から、第２
設定時間Ｔ1 後に第１電圧値Ｅ1 以下であれば電磁ガス
弁Ｍｇへの通電を停止しこれを閉止し、第１電圧値Ｅ1
と第２電圧値Ｅ2 との間にあれば第３設定時間Ｔ3 後に
おいて第２電圧値Ｅ2 以下のとき電磁ガス弁Ｍｇを閉止
し、第２電圧値Ｅ2 以上のとき電磁ガス弁Ｍｇを開放保
持する。Further, the detection signal from the voltage comparison circuit 2 and the set time signal from the timer circuit 3 are input to the gas valve control circuit 5, and based on the relationship between the thermoelectromotive force and the set time, the second
If the first voltage value E 1 or less after the set time T 1 , the power supply to the electromagnetic gas valve Mg is stopped and closed, and the first voltage value E 1
When the second closing the second voltage value E 2 or less when the solenoid gas valve Mg in the third set time T after 3 if between the voltage value E 2, the second voltage value E 2 or more when the electromagnetic gas valve Hold Mg open.
【００１０】このように、発生熱起電力の大きさと、３
段階に設定された設定時間との関係によりイグナイタＩ
Ｇ及び電磁ガス弁Ｍｇが制御される。As described above, the magnitude of the generated thermoelectromotive force,
The igniter I depends on the relationship with the set time set in the stage.
G and the electromagnetic gas valve Mg are controlled.
【００１１】そして、請求項２に記載したイグナイター
制御回路４を用いた場合は、点火操作時から第１設定時
間Ｔ1 において熱起電力が炎検知レベルである第１電圧
値Ｅ1 以上であれば、上記と同様にイグナイタＩＧを停
止し、第１電圧値Ｅ1 以下であれば継続してイグナイタ
ＩＧを作動させる。しかし、第１設定時間Ｔ1 から第２
設定時間Ｔ2 までの間で第１電圧値Ｅ1 以上になったと
きは、第１設定時間Ｔ1 と第２設定時間Ｔ2 の間におい
て第１電圧値Ｅ1 以上になった時点で即イグナイタＩＧ
を停止させ、第２設定時間Ｔ2 において第１電圧値Ｅ1
以下の時もイグナイタＩＧを停止させるものである。[0011] Then, in the case of using the igniter control circuit 4 as set forth in claim 2, there in the first set time T 1 from the time of the ignition operation at a first voltage value E 1 or thermoelectromotive force is flame detection level in the same manner as described above to stop the igniter IG, actuates the igniter IG continuously if the first voltage value E 1 or less. However, from the first set time T 1 to the second
When in until the set time T 2 has reached the first voltage value E 1 or more, immediately when the first set time T 1 and becomes the first voltage value E 1 or more between the second set time T 2 Igniter IG
Is stopped, and the first voltage value E 1 is set at the second set time T 2 .
The igniter IG is also stopped in the following cases.
【００１２】尚、熱電対は１つの場合に限らず１次熱電
対と２次熱電対の２つを備えた場合はその合成熱起電力
を検出対象とし、その大きさに基づいてイグナイタＩＧ
及び電磁ガス弁Ｍｇを制御することもできる。When the number of thermocouples is not limited to one, and when two primary thermocouples and two thermocouples are provided, the combined thermoelectromotive force is to be detected, and the igniter IG is used based on the size.
Also, the electromagnetic gas valve Mg can be controlled.
【００１３】[0013]
【実施例】以下、本考案による湯沸器の着火制御装置の
実施例について図面を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an ignition control device for a water heater according to the present invention will be described below with reference to the drawings.
【００１４】図１、図２及び図３において、１はバーナ
６の火炎で加熱される熱電対で、該熱電対１の熱起電力
が電圧比較回路２に入力されるように接続されている。
電圧比較回路２はイグナイタ制御回路４及びガス弁制御
回路５に接続され、熱起電力の立上り特性からその電圧
値Ｅが炎検知レベル電圧である第１電圧値Ｅ1 又は不完
全燃焼防止検知レベル電圧である第２電圧値Ｅ2 以上で
あるか以下であるかを検知し、検知信号をイグナイタ制
御回路４及びガス弁制御回路５に入力する。1, 2 and 3, reference numeral 1 denotes a thermocouple which is heated by the flame of the burner 6, and is connected so that the thermoelectromotive force of the thermocouple 1 is inputted to the voltage comparison circuit 2. .
Voltage comparator circuit 2 is connected to the igniter control circuit 4 and the gas valve control circuit 5, thermoelectric power first voltage value E 1 or incomplete combustion prevention detection level is the voltage value E from the rising characteristic is flame detection level voltage It detects whether the voltage is equal to or more than the second voltage value E 2 , and inputs a detection signal to the igniter control circuit 4 and the gas valve control circuit 5.
【００１５】３はタイマー回路でイグナイタ制御回路４
及びガス弁制御回路５に接続され、点火操作と同時にス
タートし点火操作時からの経過時間を第１設定時間
Ｔ1 、第２設定時間Ｔ2 、第３設定時間Ｔ3 の３段階の
時間設定ができ、設定時間信号をイグナイタ制御回路４
及びガス弁制御回路５に入力する。Reference numeral 3 denotes a timer circuit, and an igniter control circuit 4
Connected to the gas valve control circuit 5 and started at the same time as the ignition operation, and sets the elapsed time from the ignition operation in three stages of a first set time T 1 , a second set time T 2 , and a third set time T 3. The set time signal is sent to the igniter control circuit 4.
And input to the gas valve control circuit 5.
【００１６】イグナイタ制御回路４はイグナイタＩＧへ
の通電時間を制御するもので、上記電圧比較回路２の検
知信号とタイマー回路３の設定時間信号とに基づいて、
第１設定時間Ｔ1 に熱起電力が第１電圧値Ｅ1 以上であ
ればイグナイタＩＧを停止し、第１電圧値Ｅ1 以下であ
れば第２設定時間Ｔ2 までイグナイタＩＧを作動しその
後停止させるものである。The igniter control circuit 4 controls the energization time to the igniter IG. Based on the detection signal of the voltage comparison circuit 2 and the set time signal of the timer circuit 3,
Thermoelectromotive force to T 1 first set time the igniter IG stops if the first voltage value E 1 or more, then activates the igniter IG if the first voltage value E 1 or less up to the second set time T 2 It is to stop.
【００１７】ガス弁制御回路５は電磁ガス弁Ｍｇへの通
電を制御し該ガス弁Ｍｇを開閉するもので、第２設定時
間Ｔ2 において第１電圧値Ｅ1 以下であれば電磁ガス弁
Ｍｇを閉止し、第１電圧値Ｅ1 と第２電圧値Ｅ1 との間
であれば第３設定時間Ｔ3 後において第２電圧値Ｅ2 以
下のとき電磁ガス弁Ｍｇを閉止し、第２電圧値Ｅ2 以上
のとき電磁ガス弁Ｍｇを継続して開放保持するものであ
る。The gas valve control circuit 5 operates to open or close by controlling the gas valve Mg energization to the solenoid gas valve Mg, solenoid gas valve if the first voltage value E 1 or less in the second set time T 2 Mg Is closed between the first voltage value E 1 and the second voltage value E 1 , the electromagnetic gas valve Mg is closed when the voltage is equal to or less than the second voltage value E 2 after the third set time T 3 , when the voltage value E 2 or more is to open continuously maintained a solenoid gas valve Mg.
【００１８】上記構成により、点火操作をするとタイマ
ー回路３がスタートし、電磁ガス弁Ｍｇが開かれイグナ
イタＩＧがオンし火花を飛ばしバーナ６に着火する。点
火操作時からの経過時間Ｔが第１設定時間Ｔ1 以後（Ｔ
≧Ｔ1 ）において、熱起電力の電圧値Ｅが第１電圧値Ｅ
1 以上（Ｅ≧Ｅ1 ）であるときイグナイタＩＧはオフし
（図２−ａ）、第１電圧値Ｅ1 以下であるときはイグナ
イタＩＧは作動を継続し、その後経過時間Ｔが第２設定
時間Ｔ2 （Ｔ＝Ｔ2 ）でイグナイタＩＧは熱起電力の電
圧値Ｅの大きさに関係なくオフする（図２−ｂ，ｃ，
ｄ，ｅ，ｆ，ｇ，ｈ）。According to the above configuration, when the ignition operation is performed, the timer circuit 3 starts, the electromagnetic gas valve Mg is opened, the igniter IG is turned on, the spark is skipped, and the burner 6 is ignited. The elapsed time T from the ignition operation is equal to or longer than the first set time T 1 (T
≧ T 1 ), the voltage value E of the thermoelectromotive force becomes the first voltage value E
When it is 1 or more (E ≧ E 1 ), the igniter IG is turned off (FIG. 2-a). When it is less than the first voltage value E 1 , the igniter IG continues to operate. At time T 2 (T = T 2 ), the igniter IG turns off irrespective of the magnitude of the voltage value E of the thermoelectromotive force (FIGS. 2B, 2C, and 2C).
d, e, f, g, h).
【００１９】そして、熱起電力の電圧値Ｅが第２設定時
間Ｔ2 までに第１電圧値Ｅ1 以下であれば第２設定時間
で電磁ガス弁Ｍｇへの通電がストップされ該ガス弁Ｍｇ
は閉止され不着火となり（図２−ｆ）、第１電圧値Ｅ1
以上（Ｅ≧Ｅ1 ）であれば第３設定時間Ｔ3 において再
び電圧の大きさがチェックされ、電圧値Ｅが第２電圧値
Ｅ2 以上（Ｅ≧Ｅ2 ）となっていれば電磁ガス弁Ｍｇは
熱起電力によりオンした状態を維持し燃焼を継続し（図
２−ａ，ｂ，ｄ，ｈ）、第３設定時間Ｔ3 において（Ｔ
＝Ｔ3 ）電圧値Ｅが第２電圧値Ｅ2 に達しないときは電
磁ガス弁Ｍｇへの通電がストップし該ガス弁Ｍｇ閉止し
不着火となる（図２−ｅ）。If the voltage value E of the thermoelectromotive force is equal to or less than the first voltage value E 1 by the second set time T 2 , the power supply to the electromagnetic gas valve Mg is stopped in the second set time, and the gas valve Mg is stopped.
Is closed and no ignition occurs (FIG. 2-f), and the first voltage value E 1
If (E ≧ E 1 ), the magnitude of the voltage is checked again at the third set time T 3. If the voltage value E is equal to or more than the second voltage value E 2 (E ≧ E 2 ), the electromagnetic gas the valve Mg will continue to maintain a state of being turned on by the thermoelectromotive force combustion (Fig. 2-a, b, d, h), the third set time T 3 (T
= T 3 ) When the voltage value E does not reach the second voltage value E 2 , energization of the electromagnetic gas valve Mg is stopped, the gas valve Mg is closed, and no ignition occurs (FIG. 2-e).
【００２０】また、経過時間Ｔが第３設定時間Ｔ3 以前
（Ｔ＜Ｔ3 ）に電圧値ＥがＥ1 以下になったときはその
時点で電磁ガス弁Ｍｇは通電がストップし閉止され途中
失火となる（図２−ｃ，ｇ）。Further, the elapsed time T is the third set time T 3 previously (T <T 3) to the electromagnetic gas valve Mg at that time when the voltage value E becomes E 1 below middle is energized to stop closing A misfire occurs (Fig. 2-c, g).
【００２１】尚、第３設定時間Ｔ3 以後に熱起電力の電
圧値Ｅが低下し不完全燃焼防止検知レベル電圧である第
２電圧値Ｅ2 以下になると電磁ガス弁Ｍｇが閉止され燃
焼を停止する（図２−ｈ）。When the voltage value E of the thermoelectromotive force decreases after the third set time T 3 and becomes equal to or lower than the second voltage value E 2 which is the incomplete combustion prevention detection level voltage, the electromagnetic gas valve Mg is closed to start combustion. Stop (FIG. 2-h).
【００２２】次に異なる実施例について図３及び図４を
用いて上記実施例と同一の部分は省略して説明する。こ
の第２実施例は、第１設定時間Ｔ1 に熱起電力の電圧値
Ｅが炎検知レベル電圧である第１電圧値Ｅ1 に達しない
場合におけるイグナイタＩＧの制御方法を変えたもの
で、第１設定時間Ｔ1 において第１電圧値Ｅ1 に達しな
い場合は上記実施例と同様に継続してイグナイタＩＧを
作動させ、第１設定時間Ｔ1 から第２設定時間Ｔ2 まで
の間に第１電圧値Ｅ1 以上になったとき、その時点で即
イグナイタＩＧへの通電を停止させるイグナイタ制御回
路４を用いたものである。Next, a different embodiment will be described with reference to FIGS. 3 and 4, omitting the same parts as the above embodiment. In the second embodiment, in which the voltage value of the thermoelectromotive force to the first set time T 1 E changed the control method of the igniter IG when not reach the first voltage value E 1 is a flame detection level voltage, If the first set time T 1 does not reach the first voltage value E 1 actuates the igniter IG and continues as described above in example, during the period from T 1 first set time to the second set time T 2 when it becomes the first voltage value E 1 or more, and using the igniter control circuit 4 for stopping the energization of the immediately igniter IG at that time.
【００２３】この制御回路４を用いると上記実施例のよ
うに第２設定時間Ｔ2 までイグナイタＩＧを作動させて
後に停止させるのではなく、第１電圧値Ｅ1 以上になっ
た時点でイグナイタＩＧをオフすることができるので、
より一層イグナイタＩＧの作動時間を短縮することがで
きる。The igniter IG at the time rather than being stopped after actuate the igniter IG to T 2 second set time, it becomes the first voltage value E 1 or more as the use of this control circuit 4 described above in Example Can be turned off,
The operation time of the igniter IG can be further reduced.
【００２４】[0024]
【考案の効果】本考案は、上述のとおり構成されている
ので、請求項１記載の湯沸器の着火制御装置において
は、イグナイタの作動時間が熱起電力の電圧値が第１設
定時間に炎検知レベル電圧（第１電圧値）以上であれば
イグナイタを停止し、第１設定時間経過後は電圧値に関
係なく第２設定時間でイグナイタを停止することができ
るので、イグナイタへの通電時間を少なくでき電源に使
用する乾電池の消耗を少なくすることができる。Since the present invention is configured as described above, in the ignition control device for a water heater according to the first aspect, the operation time of the igniter is such that the voltage value of the thermoelectromotive force is equal to the first set time. If it is higher than the flame detection level voltage (first voltage value), the igniter is stopped. After the first set time has elapsed, the igniter can be stopped at the second set time regardless of the voltage value. And the consumption of the dry battery used for the power supply can be reduced.
【００２５】また、電磁ガス弁は第２設定時間において
炎検知レベル電圧（第１電圧値）以下のとき、及び第２
設定時間以後において炎検知レベル電圧以下のとき電磁
ガス弁を閉止でき、第３設定時間において不完全燃焼防
止検知レベル電圧（第２電圧値）以上になっていないと
きも第３設定時間で電磁ガス弁を閉止することができ
る。The electromagnetic gas valve is operated when the flame detection level voltage (first voltage value) or less is at or below the second set time, and
The electromagnetic gas valve can be closed when the voltage is equal to or lower than the flame detection level voltage after the set time. The valve can be closed.
【００２６】それ故、熱電対による熱起電力の立上り速
度が何らかの原因で遅い場合には電磁ガス弁が所定の時
間後に閉止され不安定な状況で燃焼が継続されることが
ない。また、第２設定時間において炎検知レベル電圧
（第１電圧値）以上であっても第３設定時間において不
完全燃焼防止検知レベル電圧（第２電圧値）に達してい
ない場合も電磁ガス弁を閉止できるので、不完全燃焼を
長時間継続することがなく安全確実に着火制御すること
ができる。Therefore, when the rising speed of the thermoelectromotive force by the thermocouple is slow for some reason, the electromagnetic gas valve is closed after a predetermined time, and combustion is not continued in an unstable state. In addition, even when the voltage is equal to or higher than the flame detection level voltage (first voltage value) in the second set time, the incomplete combustion prevention detection level voltage (second voltage value) is not reached in the third set time. Because it can be closed, ignition control can be performed safely and reliably without incomplete combustion continuing for a long time.
【００２７】請求項２記載の湯沸器の着火制御装置にお
いては、第１設定時間に熱起電力の電圧値が炎検知レベ
ル電圧（第１電圧値）以下であって第２設定時間と第３
設定時間との間においてその電圧値が炎検知レベル電圧
以上になったときは、即イグナイタが停止されるので、
より一層イグナイタにおける電力の消費を少なくできる
効果がある。[0027] In the ignition control device for a water heater according to claim 2, the voltage value of the thermoelectromotive force is equal to or less than the flame detection level voltage (first voltage value) during the first set time, and the second set time and the second set time. 3
If the voltage value exceeds the flame detection level voltage during the set time, the igniter is stopped immediately,
There is an effect that power consumption in the igniter can be further reduced.
【図１】本考案による湯沸器の着火制御装置のブロック
図である。FIG. 1 is a block diagram of an ignition control device for a water heater according to the present invention.
【図２】熱起電力の立上り特性とイグナイタ及び電磁ガ
ス弁のオン、オフ関係を示す説明図である。FIG. 2 is an explanatory diagram showing a rising characteristic of a thermoelectromotive force and an on / off relationship of an igniter and an electromagnetic gas valve.
【図３】作動状態を説明するフローチャートである。FIG. 3 is a flowchart illustrating an operation state.
【図４】異なる実施例における熱起電力の立上り特性と
イグナイタ及び電磁ガス弁のオン、オフ関係を示す説明
図である。FIG. 4 is an explanatory diagram showing a rising characteristic of a thermoelectromotive force and an on / off relationship of an igniter and an electromagnetic gas valve in different embodiments.
１ 熱電対 ２ 電圧比較回路 ３ タイマー回路 ４ イグナイタ制御回路 ５ ガス弁制御回路 ＩＧ イグナイタ Ｍｇ 電磁ガス弁 Ｅ1 炎検知レベル電圧（第１電圧値） Ｅ2 不燃防止検知レベル電圧（第２電圧値） Ｔ1 第１設定時間 Ｔ2 第２設定時間 Ｔ3 第３設定時間REFERENCE SIGNS LIST 1 thermocouple 2 voltage comparison circuit 3 timer circuit 4 igniter control circuit 5 gas valve control circuit IG igniter Mg electromagnetic gas valve E 1 flame detection level voltage (first voltage value) E 2 non-combustion prevention detection level voltage (second voltage value) T 1 first set time T 2 the second set time T 3 third set time
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F23N 5/10 320 F23N 5/20 F23N 5/20 102──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) F23N 5/10 320 F23N 5/20 F23N 5/20 102
Claims (2)
対（１）の熱起電力の電圧が炎検知レベル電圧である第
１電圧値（Ｅ1 ）又は不完全燃焼防止検知レベル電圧で
ある第２電圧値（Ｅ2 ）に達したか否かを検知する電圧
比較回路（２）と、点火操作時にスタートし第１設定時
間（Ｔ1 ）、第２設定時間（Ｔ2 ）、第３設定時間（Ｔ
3 ）の３段階の時間設定ができるタイマー回路（３）
と、前記電圧比較回路（２）による検知信号とタイマー
回路（３）による設定時間とに基づいて、第１設定時間
（Ｔ1 ）において熱起電力が第１電圧値（Ｅ1 ）以上で
あればイグナイタ（ＩＧ）を停止し、第１電圧値
（Ｅ1 ）以下であれば第２設定時間（Ｔ2 ）までイグナ
イタ（ＩＧ）を作動させるイグナイタ制御回路（４）と
を設け、さらに、第２設定時間（Ｔ2 ）において第１電
圧値（Ｅ1 ）以下であれば電磁ガス弁（Ｍｇ）を閉止
し、第１電圧値（Ｅ1 ）と第２電圧値（Ｅ2 ）との間で
あれば第３設定時間（Ｔ3 ）後に第２電圧値（Ｅ2 ）以
下のとき電磁ガス弁（Ｍｇ）を閉止し、第２電圧値（Ｅ
2 ）以上のとき電磁ガス弁（Ｍｇ）を開放保持するガス
弁制御回路（５）を設けたことを特徴とする湯沸器の着
火制御装置。1. A thermocouple (1) for detecting a flame, and a first voltage value (E 1 ) or a incomplete combustion prevention detection level at which the voltage of the thermoelectromotive force of the thermocouple (1) is a flame detection level voltage. A voltage comparison circuit (2) for detecting whether or not a voltage has reached a second voltage value (E 2 ); a first set time (T 1 ) and a second set time (T 2 ) which are started at the time of an ignition operation; , The third set time (T
3 ) Timer circuit that can set the time in three stages (3)
And if the thermoelectromotive force is equal to or more than the first voltage value (E 1 ) in the first set time (T 1 ) based on the detection signal from the voltage comparison circuit (2) and the set time by the timer circuit (3). if stop igniter (IG), the first voltage value and (E 1) second set time equal to or less than (T 2) an igniter control circuit (4) for actuating the igniter (IG) to provided, further, the If the second voltage value (E 2 ) is equal to or less than the first voltage value (E 1 ) at the set time (T 2 ), the electromagnetic gas valve (Mg) is closed and the first voltage value (E 1 ) and the second voltage value (E 2 ) If the voltage is equal to or less than the second voltage value (E 2 ) after the third set time (T 3 ), the electromagnetic gas valve (Mg) is closed and the second voltage value (E
2 ) An ignition control device for a water heater, wherein a gas valve control circuit (5) for keeping the electromagnetic gas valve (Mg) open in the above case is provided.
知レベル電圧である第１電圧値（Ｅ1 ）以上であればイ
グナイタ（ＩＧ）を停止し、第１電圧値（Ｅ1 ）以下で
あれば継続してイグナイタ（ＩＧ）を作動させ、第１設
定時間（Ｔ1）から第２設定時間（Ｔ2 ）までの間に第
１電圧値（Ｅ1 ）以上になった時点でイグナイタ（Ｉ
Ｇ）を停止させ、第２設定時間（Ｔ2 ）において第１電
圧値（Ｅ1 ）以下のときもイグナイタ（ＩＧ）を停止さ
せるイグナイタ制御回路（４）を用いた請求項１記載の
湯沸器の着火制御装置。2. If the thermoelectromotive force is equal to or higher than a first voltage value (E 1 ) which is a flame detection level voltage during a first set time (T 1 ), the igniter (IG) is stopped, and the first voltage value (E 1 ) If it is less than or equal to 1, the igniter (IG) is continuously operated, and the voltage has become equal to or more than the first voltage value (E 1 ) from the first set time (T 1 ) to the second set time (T 2 ). The igniter (I
G) is stopped, Yunie of the second set time (T 2) in the first voltage value (E 1) or less according to claim 1 also with igniter (igniter control circuit for stopping the IG) (4) when Device ignition control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992063668U JP2578027Y2 (en) | 1992-08-19 | 1992-08-19 | Water heater ignition control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992063668U JP2578027Y2 (en) | 1992-08-19 | 1992-08-19 | Water heater ignition control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0622751U JPH0622751U (en) | 1994-03-25 |
| JP2578027Y2 true JP2578027Y2 (en) | 1998-08-06 |
Family
ID=13235963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992063668U Expired - Lifetime JP2578027Y2 (en) | 1992-08-19 | 1992-08-19 | Water heater ignition control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2578027Y2 (en) |
-
1992
- 1992-08-19 JP JP1992063668U patent/JP2578027Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0622751U (en) | 1994-03-25 |
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