JP2664411B2 - Water heater combustion control device - Google Patents
Water heater combustion control deviceInfo
- Publication number
- JP2664411B2 JP2664411B2 JP63106047A JP10604788A JP2664411B2 JP 2664411 B2 JP2664411 B2 JP 2664411B2 JP 63106047 A JP63106047 A JP 63106047A JP 10604788 A JP10604788 A JP 10604788A JP 2664411 B2 JP2664411 B2 JP 2664411B2
- Authority
- JP
- Japan
- Prior art keywords
- fan
- heat exchanger
- switch
- gas burner
- water
- 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 - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
- F23N1/082—Regulating fuel supply conjointly with another medium, e.g. boiler water using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/04—Measuring pressure
- F23N2225/06—Measuring pressure for determining flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/06—Postpurge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2233/00—Ventilators
- F23N2233/02—Ventilators in stacks
-
- 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
Description
【発明の詳細な説明】 （イ） 産業上の利用分野 本発明はガスバーナの燃焼排気をファンにて強制的に
排出する給湯機の燃焼制御装置に関する。The present invention relates to a water heater combustion control device for forcibly discharging the combustion exhaust gas of a gas burner with a fan.
（ロ） 従来の技術 ガスバーナの燃焼排気をファンにて排出するものにお
いては、例えば実公昭62−18834号公報に示される様
に、給湯停止後も継続してファンを回転するポストパー
ジ動作を行ない、所謂後沸き等を防止しているが、上記
ポストパージ中にウォーターハンマー等により流水スイ
ッチが作動した場合には、この流水スイッチの作動によ
り周知のシーケンス動作によってガスバーナの点火動作
を行い、その後流水スイッチがオフした場合には、電磁
弁を閉じると共に点火器の作動を停止し、かつファンの
回転も停止していた。(B) Conventional technology In a system in which the combustion exhaust gas of a gas burner is exhausted by a fan, a post-purge operation for continuously rotating the fan even after the hot water supply is stopped is performed as shown in Japanese Utility Model Publication No. 62-18834. When the water switch is operated by a water hammer or the like during the post-purge, the gas burner is ignited by a known sequence operation by the operation of the water switch. When the switch was turned off, the solenoid valve was closed, the operation of the igniter was stopped, and the rotation of the fan was stopped.
その結果ポストパージ中にファンを停止した為に、熱
交換器中の水が余熱により加熱されて後沸きを生じると
いう問題があった。As a result, since the fan was stopped during the post-purge, there was a problem that the water in the heat exchanger was heated by the residual heat, and after-boiling occurred.
（ハ） 発明が解決しようとする課題 本発明はポストパージ中に何らかの理由により流水ス
イッチが短時間作動した場合の後沸き現象を防止する事
を目的とする。(C) Problems to be Solved by the Invention It is an object of the present invention to prevent the after-boiling phenomenon when the water switch is operated for a short time for some reason during post-purge.
（ニ） 問題点を解決するための手段 本発明は熱交換器と、これを加熱するガスバーナと、
このガスバーナの排気を排出するファンと、熱交換器へ
の給水を検出する流水スイッチと、給湯の為のシーケン
ス制御を行なう制御回路とを備えるものに於て、この制
御回路にて、出湯停止後のファンの回転中に流水スイッ
チが作動し、点火動作を行った後流水スイッチが作動し
ていない場合には点火動作を停止し、一方ファンの回転
を継続して成るものである。(D) Means for solving the problems The present invention provides a heat exchanger, a gas burner for heating the heat exchanger,
A fan that discharges exhaust gas from the gas burner, a flow switch that detects water supply to the heat exchanger, and a control circuit that performs sequence control for hot water supply. When the running water switch is operated during the rotation of the fan and the running water switch is not operated after performing the ignition operation, the ignition operation is stopped and the rotation of the fan is continued.
（ホ） 作用 所謂ポストパージと称される出湯停止後のファンの回
転中に流水スイッチが作動した場合、先ずガスバーナの
点火動作を行い、その後流水スイッチが作動していなけ
れば点火動作を停止し、流水スイッチが継続して作動し
ていれば点火動作を継続して通常の出湯動作を行う。(E) Action When the water switch is operated during the rotation of the fan after the stoppage of hot water called so-called post-purge, the gas burner is ignited first, and then the ignition operation is stopped if the water switch is not operated, If the running water switch is continuously operated, the ignition operation is continued to perform the normal tapping operation.
（ヘ） 実施例 本発明の実施例を先ず第１図に基づき説明すると、
（１）はガス給湯機本体で、外ケース（２）内の上部に
熱交換器（３）を装着していると共に、この熱交換器の
下方には加熱用のガスバーナ（４）を配設し、かつ上記
熱交換器の上部には、ガスバーナ（４）の排気を外に排
出する排気ファン（５）を設けた排気通路（６）を連設
している。(F) Embodiment An embodiment of the present invention will be described first with reference to FIG.
(1) is a gas water heater main body, in which a heat exchanger (3) is mounted on an upper part in an outer case (2), and a gas burner (4) for heating is arranged below the heat exchanger. Further, an exhaust passage (6) provided with an exhaust fan (5) for exhausting the exhaust gas from the gas burner (4) to the outside is connected to the upper part of the heat exchanger.
（７）は上記熱交換器（３）を途中に設けた給水通路
で、熱交換器（３）よりも上流側に周知の流水スイッチ
（８）を配設していると共に、上記熱交換器（３）の出
口部分に出湯温度を検出するサーミスタ（９）を装着し
ている。(7) is a water supply passage in which the heat exchanger (3) is provided in the middle. A well-known water switch (8) is disposed upstream of the heat exchanger (3). A thermistor (9) for detecting a tapping temperature is attached to the outlet of (3).
（10）は上記ガスバーナ（４）へガスを供給するガス
通路で、その上流側より電磁開閉弁（11）（12）、ガス
比例弁（13）を順次接続している。(10) is a gas passage for supplying gas to the gas burner (4), and is connected in sequence with electromagnetic on-off valves (11) and (12) and a gas proportional valve (13) from the upstream side.
（14）は上記ガスバーナ（４）の炎孔部（15）に近接
して設けた点火プラグ、（16）は同じく炎孔部（15）に
近接して設けた炎検出用プラグである。(14) is a spark plug provided near the flame hole (15) of the gas burner (4), and (16) is a flame detection plug similarly provided near the flame hole (15).
（17）は、上記流水スイッチ（８）等の作動に応じて
上記排気ファン（５）、電磁開閉弁（11）（12）、ガス
比例弁（13）、点火プラグ（14）等を制御する制御回路
で、主にマイクロコンピュータにて構成し、周知の給湯
動作を行う為のシーケンスプログラム等を備えている。(17) controls the exhaust fan (5), the solenoid on-off valves (11) and (12), the gas proportional valve (13), the spark plug (14), and the like in accordance with the operation of the water switch (8) and the like. The control circuit mainly includes a microcomputer, and includes a sequence program for performing a known hot water supply operation.
即ち上記制御回路（17）は、流水スイッチ（８）の作
動により出湯を検出すると、排気ファン（５）を回転す
ると共に電磁開閉弁（11）（12）を開き、又同時に上記
点火プラグ（14）にて放電してガスバーナ（４）の点火
動作を行う。そしてこのガスバーナが点火すると上記サ
ーミスタ（９）による出湯温度に応じてガス比例弁（1
3）を制御し、出湯温度が設定温度になるようにガスバ
ーナ（４）の火力を調節する。That is, when the control circuit (17) detects hot water by the operation of the flowing water switch (8), the control circuit (17) rotates the exhaust fan (5) and opens the electromagnetic on-off valves (11) and (12). ) To perform the ignition operation of the gas burner (4). When the gas burner ignites, the gas proportional valve (1) is set according to the tapping temperature of the thermistor (9).
3) is controlled, and the heating power of the gas burner (4) is adjusted so that the tap water temperature reaches the set temperature.
又出湯を停止すると流水スイッチ（８）が作動を停止
してこれを検出し、上記電磁開閉弁（11）（12）を閉じ
てガスバーナ（４）の燃焼を停止するが、上記排気ファ
ン（５）は第２図にて示すように所定時間継続して回転
し、所謂ポストパージ動作を行う。When the hot water is stopped, the running water switch (8) stops operating and detects this. The electromagnetic on / off valves (11) and (12) are closed to stop the combustion of the gas burner (4). 2) rotates continuously for a predetermined time as shown in FIG. 2 to perform a so-called post-purge operation.
一方上記ポストパージ中に、上記流水スイッチ（８）
が作動した場合（21）には、通常のシーケンス動作に従
って点火器を作動して点火動作を行った後（22）、その
後流水スイッチ（８）の作動状態を検出して（23）これ
がオフしていれば、他の水栓の開閉等による流水スイッ
チ（８）の一時的な作動と判断して点火動作を終了（2
4）するが、ポストパージ時間が終了していなければそ
れを継続する。On the other hand, during the post-purge, the running water switch (8)
Is activated (21), the igniter is operated in accordance with a normal sequence operation to perform an ignition operation (22), and then the operating state of the flowing water switch (8) is detected (23) and the switch is turned off. If so, it is determined that the water switch (8) is temporarily activated by opening or closing another faucet, and the ignition operation is terminated (2.
4) Yes, but continue if the post-purge time has not expired.
又上記点火動作を開始した後でも流水スイッチ（８）
が継続して作動していれば、通常の出湯動作と判断し、
給湯運転（25）を行う。Also, the water switch (8) even after the ignition operation is started.
If continues to operate, it is determined that normal tapping operation,
Perform the hot water supply operation (25).
（ト） 発明の効果 本発明による構成により、ポストパージ中に流水スイ
ッチが作動して点火動作を行っても、短時間にて流水ス
イッチがオフした場合には、点火動作を終了すると共に
ポストパージ動作を継続することにより、所謂ウォータ
ーハンマー等による一時的な流水スイッチの作動により
点火動作を行った場合にも、ポストパージを継続する事
で、ポストパージの中断による後沸きを確実に防止する
事ができる。(G) Effects of the Invention According to the configuration of the present invention, even if the water flow switch is activated during post-purge and the ignition operation is performed, if the water flow switch is turned off in a short time, the ignition operation is terminated and post-purge is performed. By continuing the operation, the post-purge is continued even when the ignition operation is performed by the operation of a temporary water switch by a so-called water hammer, thereby reliably preventing the post-boil due to the interruption of the post-purge. Can be.
第１図は本発明による燃焼制御装置を備えた給湯機の概
略図、第２図は同じく動作説明用のフローチャート図で
ある。 （３）……熱交換器、（４）……ガスバーナ、（５）…
…排気ファン、（８）……流水スイッチ、（17）……制
御回路。FIG. 1 is a schematic view of a water heater provided with a combustion control device according to the present invention, and FIG. 2 is a flowchart for explaining the operation of the water heater. (3) ... heat exchanger (4) ... gas burner (5) ...
... exhaust fan, (8) ... water switch, (17) ... control circuit.
Claims (1)
と、このガスバーナの排気を排出するファンと、熱交換
器への給水を検出する流水スイッチと、給湯の為のシー
ケンス制御を行う制御回路とを備えるものに於て、この
制御回路にて、出湯停止後の上記ファンの回転中に流水
スイッチが作動し、点火動作を行った後流水スイッチが
作動していない場合には点火動作を停止し、一方ファン
の回転を継続する事を特徴とする給湯機の燃焼制御装
置。1. A heat exchanger, a gas burner for heating the heat exchanger, a fan for discharging exhaust gas from the gas burner, a flowing water switch for detecting water supply to the heat exchanger, and a control circuit for performing sequence control for hot water supply. In this control circuit, in this control circuit, the running water switch is operated during the rotation of the fan after the stop of hot water supply, and after the ignition operation is performed, if the running water switch is not operated, the ignition operation is stopped. And a combustion control device for a water heater characterized by continuing rotation of the fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63106047A JP2664411B2 (en) | 1988-04-27 | 1988-04-27 | Water heater combustion control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63106047A JP2664411B2 (en) | 1988-04-27 | 1988-04-27 | Water heater combustion control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01277115A JPH01277115A (en) | 1989-11-07 |
| JP2664411B2 true JP2664411B2 (en) | 1997-10-15 |
Family
ID=14423719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63106047A Expired - Fee Related JP2664411B2 (en) | 1988-04-27 | 1988-04-27 | Water heater combustion control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2664411B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108714610B (en) * | 2018-06-13 | 2023-06-23 | 福建省锅炉压力容器检验研究院 | Gas tank cleaning equipment |
-
1988
- 1988-04-27 JP JP63106047A patent/JP2664411B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01277115A (en) | 1989-11-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |