JPH0141905B2 - - Google Patents
Info
- Publication number
- JPH0141905B2 JPH0141905B2 JP56174268A JP17426881A JPH0141905B2 JP H0141905 B2 JPH0141905 B2 JP H0141905B2 JP 56174268 A JP56174268 A JP 56174268A JP 17426881 A JP17426881 A JP 17426881A JP H0141905 B2 JPH0141905 B2 JP H0141905B2
- Authority
- JP
- Japan
- Prior art keywords
- burner
- pilot flame
- main burner
- pilot
- switch
- 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
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 program acting through electrical means, e.g. using time-delay relays
- F23N5/203—Systems for controlling combustion with a time program 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
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/02—Air or combustion gas valves or dampers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/14—Fuel valves electromagnetically operated
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (AREA)
Description
【発明の詳細な説明】
本発明は、瞬間式湯沸器等の燃焼制御装置の改
良に係り、器具停止後の種火を残している際に再
動作を行なう場合、燃焼制御回路の起動時を若干
遅らせ、出湯温度特性を向上することを目的とす
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a combustion control device for an instantaneous water heater, etc., and when the device is restarted while a pilot flame remains after the device has been stopped, the combustion control circuit is activated. The purpose is to slightly delay the hot water temperature and improve the hot water temperature characteristics.
従来の瞬間式湯沸器において、種火残し中に再
起動をかけると、燃焼制御回路は即座にメインバ
ーナに着火させる。この時、種火の熱量により熱
せられた湯はさらに加熱されることになる。従つ
て、水栓へは設定温度よりも高い湯が流れ、シヤ
ワー等を使用していると上記の高い温度の湯の部
分が非常に不快感を使用者に与える。 In a conventional instantaneous water heater, when restarted while the pilot flame remains, the combustion control circuit immediately ignites the main burner. At this time, the hot water heated by the pilot flame will be further heated. Therefore, hot water at a temperature higher than the set temperature flows into the faucet, and when the user is using a shower or the like, the hot water at the high temperature makes the user feel very uncomfortable.
本発明は、この様な欠点を解消し、かつ従来例
の長所である種火残し機能も有する新しい燃焼制
御回路である。 The present invention is a new combustion control circuit that eliminates these drawbacks and also has the ignition retention function, which is an advantage of the conventional example.
本発明の一実施例を第１図、第２図に従つて説
明する。 An embodiment of the present invention will be described with reference to FIGS. 1 and 2.
第１図において、１は器具の運転・停止に連動
してオンオフするスイツチ。２はスイツチ１と燃
焼制御回路５の間に入れたダイオード。３は種火
残しタイマ回路１９（後述する）によりオンオフ
するタイマスイツチで、スイツチ１とダイオード
２の直列回路に並列に接続して燃焼制御回路５に
接続する。８はリレーRL1９の接点でその共通接
点はダイオード２のカソードとタイマスイツチの
二次側に接続するとともに、その常閉接点には点
火トランスの放電電極１０とリレーRL2１１の接
点RY2１２の常閉接点を接続する。１３は主電磁
弁で接点RY2１２の共通接点に接続する。１４は
熱電対で、パイロツトバーナ３８により加熱され
熱起電力を発生する。１５は種火検出回路３９の
出力によりリレーRL1９に接続されたサイリスタ
１６をオンさせるトリガ回路で、１７はリレー
RL2１１に接続されたトランジスタ１８をオンオ
フさせるバイアス回路である。１９は種火残しタ
イマ回路で、スイツチ１とダイオード２の間、及
びRY1とRY2の常閉接点に接続されており、それ
によりタイマスイツチ３をオンオフさせる。第３
図は燃焼制御回路を使用した器具のガス回路で、
主電磁弁１３、ガバナ３３、電磁弁３４が直列に
接続され、これに比例弁３５と緩点火電磁弁３６
の並列回路が接続され、さらにメインバーナ３７
が接続されている。そして、この器具の燃焼器は
水等の被加熱媒体がパイロツトバーナ３８（種火
バーナ）及びメインバーナ３７によつて加熱され
る熱交換部（図示せず）を有するものである。 In Fig. 1, 1 is a switch that is turned on and off in conjunction with the start and stop of the appliance. 2 is a diode inserted between switch 1 and combustion control circuit 5. Reference numeral 3 designates a timer switch that is turned on and off by a pilot flame remaining timer circuit 19 (described later), which is connected in parallel to the series circuit of switch 1 and diode 2, and connected to combustion control circuit 5. 8 is a contact of relay RL 1 9, and its common contact is connected to the cathode of diode 2 and the secondary side of the timer switch, and its normally closed contact is connected to the discharge electrode 10 of the ignition transformer and the contact RY 2 of relay RL 2 11. Connect 12 normally closed contacts. 13 is the main solenoid valve, which is connected to the common contact of contact RY 2 and 12. A thermocouple 14 is heated by a pilot burner 38 and generates a thermoelectromotive force. 15 is a trigger circuit that turns on the thyristor 16 connected to the relay RL 1 9 by the output of the pilot flame detection circuit 39; 17 is the relay
This is a bias circuit that turns on and off the transistor 18 connected to RL 2 11. Reference numeral 19 denotes a timer circuit with a remaining pilot flame, which is connected between the switch 1 and the diode 2 and to the normally closed contacts of RY 1 and RY 2 , thereby turning the timer switch 3 on and off. Third
The figure shows a gas circuit for an appliance that uses a combustion control circuit.
A main solenoid valve 13, a governor 33, and a solenoid valve 34 are connected in series, and a proportional valve 35 and a slow ignition solenoid valve 36 are connected in series.
A parallel circuit is connected to the main burner 37.
is connected. The combustor of this appliance has a heat exchange section (not shown) in which a medium to be heated, such as water, is heated by a pilot burner 38 (pilot burner) and a main burner 37.
第２図において、抵抗２０，２１はロジツク回
路の入力電圧制限抵抗であり、抵抗２２，２３は
プルダウン抵抗である。２４はエクスクラシブオ
ア・ゲート、２５はナンド・ゲート、２６は立ち
下りでトリガされるワンシヨツト・マルチバイブ
レーター、２７はノア・ゲートである。２８は電
磁弁駆動トランジスタ３０に接続されたリレー
RL3でその接点RY3７（第１図）は燃焼制御回路
５のメインバーナ制御器４０をオンオフする様に
設置する。２９はリレーRL3２８に並列に接続さ
れた、サージアブリーバである。３１はワンシヨ
ツト・マルチバイブレータ２６のパルス幅を決め
る時定数回路である。端子１はスイツチ１とダイ
オード２の間に接続し、端子２はダイオード２の
カソード側に接続し、端子３はアースに接続す
る。 In FIG. 2, resistors 20 and 21 are input voltage limiting resistors of the logic circuit, and resistors 22 and 23 are pull-down resistors. 24 is an exclusive or gate, 25 is a NAND gate, 26 is a one-shot multivibrator triggered at the falling edge, and 27 is a NOAH gate. 28 is a relay connected to the electromagnetic valve driving transistor 30
The contact RY 3 7 (FIG. 1) at RL 3 is installed to turn on and off the main burner controller 40 of the combustion control circuit 5. 29 is a surge breaker connected in parallel to relay RL 3 28. 31 is a time constant circuit that determines the pulse width of the one-shot multivibrator 26. Terminal 1 is connected between switch 1 and diode 2, terminal 2 is connected to the cathode side of diode 2, and terminal 3 is connected to ground.
次に動作の説明をする。器具が運転開始され、
先ずスイツチ１が閉じる。端子１，２とも同時に
“Ｈ”になるのでワンシヨツト・マルチバイブレ
ータ２６はトリガされず“Ｌ”のままである。 Next, the operation will be explained. The equipment is put into operation,
First, switch 1 is closed. Since both terminals 1 and 2 become "H" at the same time, the one-shot multivibrator 26 is not triggered and remains "L".
又同時にナンド・ゲート２５は“Ｈ”→“Ｌ”
になり、電磁弁駆動トランジスタ３０はオンし、
それによりリレーRL3２８がオンし、その接点
RY3７が閉じる。つまり、起動時はスイツチ１を
オンすると同時にメインバーナ制御器４０が使用
可能状態となる。又点火トランスの放電電極１０
と主電磁弁１３に通電され両者の働きに依りパイ
ロツトバーナ３８に種火が点火される。この時、
種火残しタイマ回路１９は作動せず、従つてリレ
ー接点RY4３は開いた状態である。 At the same time, NAND gate 25 changes from “H” to “L”
, the solenoid valve driving transistor 30 turns on,
This turns on relay RL 3 28 and its contacts
RY 3 7 closes. That is, at the time of startup, the main burner controller 40 becomes available for use at the same time as the switch 1 is turned on. Also, the discharge electrode 10 of the ignition transformer
The main solenoid valve 13 is energized, and the pilot burner 38 is ignited by the action of both. At this time,
The pilot flame remaining timer circuit 19 is not activated, so the relay contact RY 4 3 is open.
次に、種火検出回路３９の熱電対１４が種火を
検知し、その出力信号が“Ｌ”→“Ｈ”に変わ
る。そうすると、トランジスタ１８とサイリスタ
１６が同時にオンする。その結果リレーRL1９、
リレーRL2１１がそれぞれ通電され、リレー接点
RY1８、RY2１２が同時に切り替る。これに依
り、使用可能状態になつているメインバーナ制御
器４０に通電されメインバーナ３７にパイロツト
バーナ２８から着火する。と同時に点火トランス
が停止し、種火残しタイマ回路１９が作動しタイ
マスイツチ３が閉じる。つまり燃焼制御回路５へ
はスイツチ１からとタイマスイツチ３から並列に
電力が供給される。 Next, the thermocouple 14 of the pilot flame detection circuit 39 detects the pilot flame, and its output signal changes from "L" to "H". Then, transistor 18 and thyristor 16 are turned on simultaneously. As a result relay RL 1 9,
Relays RL 2 11 are energized and the relay contacts
RY 1 8 and RY 2 12 switch at the same time. As a result, the main burner controller 40, which is ready for use, is energized and the main burner 37 is ignited from the pilot burner 28. At the same time, the ignition transformer stops, the pilot flame remaining timer circuit 19 operates, and the timer switch 3 closes. That is, power is supplied to the combustion control circuit 5 from the switch 1 and the timer switch 3 in parallel.
次に器具の使用を一時停止するとスイツチ１が
オフする。そうすると端子１が“Ｌ”になりナン
ド・ゲート２５が“Ｈ”、ノア・ゲート２７が
“Ｌ”になり、トランジスタ３０がオフ、リレー
RL3２８がオフし、リレー接点RY3７が開き、メ
インバーナ３７は消火する。またエクスクラシブ
オア・ゲート２４は“Ｌ”→“Ｈ”になる。一
方、種火残しタイマ回路１９はスイツチ１をオフ
にしても有限時間作動し続け、タイマスイツチ３
は閉じたままである。よつて主電磁弁１３は通電
され続け、器具では種火は保持されたままであ
る。 Next, when the use of the device is temporarily stopped, switch 1 is turned off. Then, terminal 1 becomes "L", NAND gate 25 becomes "H", NOR gate 27 becomes "L", transistor 30 turns off, and the relay
RL 3 28 is turned off, relay contact RY 3 7 is opened, and main burner 37 is extinguished. Also, the exclusive or gate 24 changes from "L" to "H". On the other hand, the pilot flame remaining timer circuit 19 continues to operate for a limited time even when switch 1 is turned off, and when timer switch 3
remains closed. The main solenoid valve 13 thus remains energized and the pilot flame remains in the appliance.
次に種火が残つている状態で器具を再使用した
場合を説明する。器具が再使用されるとスイツチ
１が閉じる。その時端子２は“Ｈ”のままである
が端子１は“Ｌ”→“Ｈ”になる。そうすればエ
クスクラシブオア・ゲート２４は“Ｈ”→“Ｌ”
になつてその立ち下がりでワンシヨツト・マルチ
バイブレータ２６をトリガし、ワンシヨツト・マ
ルチバイブレータ２６は有限時間のパルスを発生
する。それによりノア・ゲート２７は閉じ、端子
１，２が“Ｈ”になりナンド・ゲート２５が
“Ｌ”になつてもノア・ゲート２７は“Ｈ”にな
らずトランジスタ３０はオフのままであり又リレ
ーRL3２８もオフのままである。故にリレー接点
RY3２８は開いたままでありメインバーナ制御器
４０は作動しない。有限時間のパルスが無くなれ
ばノア・ゲート２７の入力は両方とも“Ｌ”にな
り、出力は“Ｈ”となる。その結果トランジスタ
３０、リレーRL3２８がオンし、リレー接点RY3
７が閉じ、メインバーナ制御器４０に通電されメ
インバーナ３７が着火される。従つて従来例の様
に種火残りタイマ回路が作動中ならば器具が再使
用されスイツチ１が閉じると即座にメインバーナ
に着火されるのではなく、スイツチ１が閉じると
有限時間遅れてメインバーナ３７が着火する。
（種火残しタイマ回路１９が作動していない時は
従来通り。）このことは種火残しタイマ１９の作
動中に器具を再使用した時、従来の様に「後わ
き」の現象を無くすことができ、湯→高温湯→湯
のステツプから湯→湯のステツプを実現できる。 Next, we will explain what happens when the device is reused with the pilot flame remaining. Switch 1 closes when the instrument is reused. At that time, terminal 2 remains at "H", but terminal 1 changes from "L" to "H". Then Exclusive or Gate 24 will change from “H” to “L”
The one-shot multivibrator 26 is triggered at the falling edge of the signal, and the one-shot multivibrator 26 generates a finite-time pulse. As a result, the NOR gate 27 closes, terminals 1 and 2 become "H", and even though the NAND gate 25 becomes "L", the NOR gate 27 does not become "H" and the transistor 30 remains off. Relay RL 3 28 also remains off. Therefore, relay contact
RY 3 28 remains open and main burner controller 40 is not activated. When the finite time pulse disappears, both inputs of the NOR gate 27 become "L" and the output becomes "H". As a result, transistor 30 and relay RL 3 28 are turned on, and relay contact RY 3 is turned on.
7 is closed, the main burner controller 40 is energized, and the main burner 37 is ignited. Therefore, if the pilot flame remaining timer circuit is operating as in the conventional example, the appliance will be reused and the main burner will not be ignited immediately when switch 1 is closed, but the main burner will be ignited after a finite time delay when switch 1 is closed. 37 ignites.
(When the pilot flame remaining timer circuit 19 is not operating, it remains the same as before.) This eliminates the "rear side" phenomenon that occurs when the appliance is reused while the pilot flame remaining timer 19 is operating. It is possible to realize the step of hot water → hot water → hot water to hot water → hot water.
次に長期間の間をおいて再使用する場合（種火
残しタイマ回路が作動停止している場合）は前記
運転開始時のシーケンスと同様である。 When the engine is reused after a long period of time (when the pilot flame remaining timer circuit is inactive), the sequence is the same as the sequence at the start of operation.
以上のように本発明によれば、器具の後わき現
象（器具再使用時に於て湯→高温湯→湯のステツ
プが起きること）を防ぐことができる。 As described above, according to the present invention, it is possible to prevent the phenomenon of appliance backlash (the occurrence of the step of hot water → hot water → hot water when the appliance is reused).
第１図は本発明の一実施例の燃焼制御回路の回
路図、第２図は同回路に用いる遅延回路の回路
図、第３図はガスブロツクの概略図である。
３２……電磁弁、３３……ガバナ、３５……比
例弁、３７……メインバーナ。
FIG. 1 is a circuit diagram of a combustion control circuit according to an embodiment of the present invention, FIG. 2 is a circuit diagram of a delay circuit used in the circuit, and FIG. 3 is a schematic diagram of a gas block. 32... Solenoid valve, 33... Governor, 35... Proportional valve, 37... Main burner.
Claims (1)
ーナによつて加熱される熱交換部を有する燃焼器
にあつて、前記メインバーナおよびこのバーナに
点火する種火用のパイロツトバーナと、このパイ
ロツトバーナに加熱され種火を検知する種火検出
回路と、この種火検出回路の種火検知信号をうけ
て動作し、前記メインバーナを燃焼させるメイン
バーナ制御器と、前記種火検知回路の信号をうけ
て動作し、メインバーナの消火後、一定時間種火
を残す機能を有する種火残しタイマ回路とを備
え、この種火残しタイマ回路による種火残し時間
中であれば燃焼器具の運転および停止に連動して
ON−OFFするスイツチがONすると設定可能な
有限時間後にメインバーナ制御器を介してメイン
バーナを着火せしめ、種火残し時間外で前記スイ
ツチがONすると種火検出回路、メインバーナ制
御器の順に動作させてメインバーナを着火せしめ
る機能を有する燃焼制御回路。1. In a combustor having a heat exchange section in which a medium to be heated such as water is heated by a pilot burner and a main burner, the main burner and a pilot burner for igniting this burner, and a pilot burner for igniting the main burner and this burner; a pilot flame detection circuit that detects the pilot flame heated by the burner; a main burner controller that operates upon receiving the pilot flame detection signal of the pilot flame detection circuit to burn the main burner; and a signal of the pilot flame detection circuit. It is equipped with a pilot flame remaining timer circuit which operates in response to the engine burner and has a function of leaving the pilot flame for a certain period of time after the main burner has been extinguished. In conjunction with the stop
When the ON-OFF switch is turned on, the main burner is ignited via the main burner controller after a settable finite time, and when the switch is turned on outside the pilot flame remaining time, the pilot flame detection circuit and the main burner controller operate in that order. A combustion control circuit that has the function of causing the main burner to ignite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56174268A JPS5875620A (en) | 1981-10-29 | 1981-10-29 | Combustion control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56174268A JPS5875620A (en) | 1981-10-29 | 1981-10-29 | Combustion control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5875620A JPS5875620A (en) | 1983-05-07 |
| JPH0141905B2 true JPH0141905B2 (en) | 1989-09-08 |
Family
ID=15975672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56174268A Granted JPS5875620A (en) | 1981-10-29 | 1981-10-29 | Combustion control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5875620A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6441720A (en) * | 1987-08-08 | 1989-02-14 | Rinnai Kk | Hot water boiler |
| GB9211825D0 (en) * | 1992-05-30 | 1992-07-15 | Potterton Myson Limited | Heating appliances |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55650A (en) * | 1978-06-16 | 1980-01-07 | Seiko Epson Corp | Liquid crystal display device |
| JPS5630536A (en) * | 1979-08-20 | 1981-03-27 | Matsushita Electric Ind Co Ltd | Controlling device of combustion |
-
1981
- 1981-10-29 JP JP56174268A patent/JPS5875620A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5875620A (en) | 1983-05-07 |
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