JPH08303764A - Gas water heater - Google Patents
Gas water heaterInfo
- Publication number
- JPH08303764A JPH08303764A JP13292895A JP13292895A JPH08303764A JP H08303764 A JPH08303764 A JP H08303764A JP 13292895 A JP13292895 A JP 13292895A JP 13292895 A JP13292895 A JP 13292895A JP H08303764 A JPH08303764 A JP H08303764A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- water temperature
- gas
- burner
- flame
- 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.)
- Granted
Links
Landscapes
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Control Of Combustion (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はガス給湯器に関し、詳し
くは不着火異常時にその原因となる故障部位の特定を迅
速に行なうようにしたガス給湯器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas water heater, and more particularly to a gas water heater capable of promptly identifying a faulty part which causes the misfire when an abnormal ignition occurs.
【０００２】[0002]
【従来の技術】従来より、ガス給湯器において、リモコ
ンに設けた表示部により異常が報知されると、予め修理
マニュアルに示されているその異常原因と推定された全
ての部位に対してチェックが行なわれる。例えば、不着
火異常時の場合、ガスの供給に関する部位であるメイン
電磁弁，比例弁，元電磁弁と、点火に関する部位である
イグナイター，電極と、火炎検出に関する部位である火
炎検出回路，火炎検出ロッド等が推定される原因として
示されており、修理において、それらのチェックを全て
行なうものである。2. Description of the Related Art Conventionally, in a gas water heater, when an anomaly is reported by a display unit provided on a remote controller, all parts presumed to be the cause of the anomaly indicated in a repair manual are checked in advance. Done. For example, in the case of non-ignition abnormality, the main solenoid valve, the proportional valve, and the original solenoid valve, which are parts related to gas supply, the igniter and the electrodes, which are parts related to ignition, and the flame detection circuit, which is part related to flame detection, and flame detection. Rods and the like are shown as probable causes, and they are all checked during repair.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、こうし
た従来の方法では故障原因の推定がガス弁，点火装置，
火炎検出器といった広範囲にわたるため、故障部位のチ
ェック箇所が多くチェックに多大な時間を費やしメンテ
ナンス性が悪いものであった。また、火炎検出回路，火
炎検出ロッド等の故障は、湿気，雨，ドレン等により一
時的に発生し、乾燥すれば直る場合もあるので故障部位
がなかなか掴めず更に多大な時間を費やすことがあっ
た。本発明のガス給湯器は上記課題を解決し、故障原因
の推定範囲を特定してメンテナンス性の良いガス給湯器
を提供することを目的とする。However, in such a conventional method, the cause of failure is estimated by the gas valve, the ignition device,
Since it covers a wide area such as a flame detector, there are many points to be checked as faulty parts, and a great deal of time is spent for checking, resulting in poor maintainability. In addition, failure of the flame detection circuit, flame detection rod, etc. may occur temporarily due to moisture, rain, drain, etc. and may be repaired if it dries, so it may be difficult to grasp the failed part, and it may take an even longer time. It was It is an object of the present invention to solve the above problems and to provide a gas water heater with good maintainability by specifying the estimated range of the cause of failure.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決する本発
明の請求項１記載のガス給湯器は、燃料ガスを燃焼させ
るバーナと、上記バーナへのガス流路を開いて燃料ガス
を供給するガスバルブと上記バーナの燃焼熱により通水
を加熱する熱交換器と、上記ガスバルブを開いて上記バ
ーナの燃焼を開始させる点火手段と、上記バーナの燃焼
火炎を検出する火炎検出手段と、上記熱交換器の出湯温
度を検出する出湯温検出手段とを備えたガス給湯器にお
いて、点火動作を作動させた後、上記火炎検出手段によ
り火炎が検出されず、かつ上記出湯温検出手段により上
記出湯温度の上昇が検出されたとき上記火炎検出手段の
故障と判定する故障判定手段を設けたことを要旨とす
る。A gas water heater according to claim 1 of the present invention which solves the above problems, supplies a fuel gas by opening a gas burner for burning fuel gas and a gas flow path to the burner. A heat exchanger that heats the water flow by the combustion heat of the gas valve and the burner, an ignition means that opens the gas valve to start the combustion of the burner, a flame detection means that detects the combustion flame of the burner, and the heat exchange. In a gas water heater provided with a hot water temperature detecting means for detecting the hot water temperature of the heater, after activating the ignition operation, no flame is detected by the flame detecting means, and the hot water temperature detecting means detects the hot water temperature. The gist is to provide a failure determination means for determining a failure of the flame detection means when a rise is detected.
【０００５】また、本発明の第２のガス給湯器は、上記
熱交換器の入水温度を検出する入水温検出手段を備え、
上記入水温検出手段により検出した入水温と上記出湯温
検出手段により検出した出湯温との差に基づいて上記出
湯温の上昇を判定することを要旨とする。The second gas water heater of the present invention further comprises an inlet water temperature detecting means for detecting the inlet water temperature of the heat exchanger,
The gist is to determine the rise of the hot water temperature based on the difference between the hot water temperature detected by the hot water temperature detecting means and the hot water temperature detected by the hot water temperature detecting means.
【０００６】[0006]
【作用】上記構成を有する本発明のガス給湯器は、点火
動作後、所定時間経過しても火炎検出手段により火炎が
検出されず、しかも出湯温検出手段により検出した出湯
温度が上昇する場合は、ガス供給が有りバーナに点火し
たとみなし、故障推定範囲をガス供給と点火に関する部
位以外、すなわち、火炎検出手段の故障と限定するの
で、修理時にチェックする箇所が狭められる。In the gas water heater of the present invention having the above-mentioned structure, when the flame is not detected by the flame detecting means and the hot water temperature detected by the hot water temperature detecting means rises even after a predetermined time has passed after the ignition operation. Since it is considered that the burner is ignited with the gas supply and the failure estimation range is limited to the parts other than the parts related to the gas supply and the ignition, that is, the failure of the flame detection means, the parts to be checked at the time of repair are narrowed.
【０００７】また、請求項２記載のガス給湯器は湯温と
入水温に基づいて温度上昇の検出を行なうので入水温の
変化に影響されずに温度上昇の判断が確実にできる。例
えば、実際に着火していない場合でも給水配管途中の水
温にムラが有ると熱交換器に通水される入水温の変化に
伴って出湯温も変化してしまい、出湯温が上昇したと判
断してしまうという誤動作も防止できる。Further, since the gas water heater according to the second aspect detects the temperature rise based on the hot water temperature and the incoming water temperature, the temperature rise can be surely judged without being affected by the change in the incoming water temperature. For example, if there is unevenness in the water temperature in the middle of the water supply pipe even if it has not actually ignited, it is determined that the outlet hot water temperature has changed due to the change in the incoming water temperature that is passed through the heat exchanger, and the hot water outlet temperature has increased. It is possible to prevent a malfunction that would occur.
【０００８】[0008]
【実施例】以上説明した本発明の構成・作用を一層明ら
かにするために、以下本発明の好適な実施例について説
明する。図１は一実施例としてのガス給湯器の概略構成
図である。本実施例のガス給湯器は、給水管７および出
湯管８が配管された熱交換器１２がケーシング１７内に
配設されると共に、このケーシング１７内にはその熱交
換器１２を加熱するバーナ１が配設されている。Preferred embodiments of the present invention will be described below in order to further clarify the structure and operation of the present invention described above. FIG. 1 is a schematic configuration diagram of a gas water heater as one embodiment. In the gas water heater of this embodiment, a heat exchanger 12 having a water supply pipe 7 and a hot water discharge pipe 8 is arranged in a casing 17, and a burner for heating the heat exchanger 12 is also provided in the casing 17. 1 is provided.
【０００９】そしてバーナ１のガス管１８にはメインバ
ルブ１１とその上流に比例弁１０と更に上流に元電磁弁
９が設けられ、給水管７には水の流れを検知する水流ス
イッチ６やその水の温度を検出する入水温センサ５が設
けられている。一方出湯管８には出湯温度を検出する出
湯温センサ４が設けられ、出湯管８の湯出口には水栓１
９が設けられている。The gas pipe 18 of the burner 1 is provided with a main valve 11, a proportional valve 10 upstream thereof and an original solenoid valve 9 further upstream thereof, and a water flow switch 6 for detecting the flow of water in the water supply pipe 7 and the same. An incoming water temperature sensor 5 that detects the temperature of water is provided. On the other hand, the hot water outlet pipe 8 is provided with a hot water outlet temperature sensor 4 for detecting the hot water temperature, and the hot water outlet of the hot water outlet pipe 8 has a faucet 1
9 are provided.
【００１０】そしてこのガス給湯器の運転を制御するコ
ントローラ１３の入力側には、上記入水温センサ５、水
流スイッチ６、出湯温センサ４、火炎検出回路２０に設
けられた火炎検出ロッド２等が接続され、またコントロ
ーラ１３の出力側にはメインバルブ１１、比例弁１０、
元電磁弁９、ファン１４、イグナイター３および操作表
示やエラー表示などを行なうＬＣＤの表示部が設けられ
たリモコン１５等が接続されている。On the input side of the controller 13 that controls the operation of the gas water heater, the incoming water temperature sensor 5, the water flow switch 6, the hot water temperature sensor 4, the flame detection rod 2 provided in the flame detection circuit 20, and the like are provided. The main valve 11 and the proportional valve 10 are connected to the output side of the controller 13,
The main solenoid valve 9, the fan 14, the igniter 3 and a remote controller 15 provided with an LCD display section for displaying operation and errors are connected.
【００１１】次に、本実施例に係わる動作シーケンスを
第２図の流れ図に基づいて説明する。 水栓１９が開か
れると給湯器に通水され水流スイッチ６がＯＮし（Ｓ
１；ＹＥＳ）、ファン１４を作動して（Ｓ２）ケーシン
グ１７内を所定時間プリパージした後、元電磁弁９と比
例弁１０とメインバルブ１１を開弁し（Ｓ３）、イグナ
イター３により放電を開始する（Ｓ４）。こうしたバー
ナ１への点火動作が行なわれた後、火炎検出ロッド２に
より火炎の有無を検出し（Ｓ５）、火炎が検出されれば
所定の燃焼制御が開始される（Ｓ６）。Next, the operation sequence according to this embodiment will be described with reference to the flowchart of FIG. When the faucet 19 is opened, water is supplied to the water heater and the water flow switch 6 is turned on (S
1; YES), the fan 14 is operated (S2), and the inside of the casing 17 is pre-purged for a predetermined time, then the original solenoid valve 9, the proportional valve 10 and the main valve 11 are opened (S3), and the igniter 3 starts discharging. Yes (S4). After the burner 1 is ignited as described above, the flame detection rod 2 detects the presence or absence of flame (S5), and if flame is detected, predetermined combustion control is started (S6).
【００１２】一方、所定時間経過しても火炎検出ロッド
２により火炎が検出されない場合は（Ｓ５；ＮＯ）、入
水温の変化による誤判断が生じないように出湯温検出手
段と入水温検出手段との検出温度の差により出湯温の温
度上昇が有ったか否かを判断する（Ｓ７）。出湯温の温
度上昇が認められたときは（Ｓ７；ＹＥＳ）、ガス供給
と点火が行なわれたとみなし、ガスの供給および点火に
関する部位以外、すなわち、火炎検出回路に関する部位
の故障と判断し、運転を停止し、その旨を不揮発性メモ
リーに記憶し、ＬＣＤの表示部にコード番号に置き換え
た故障表示を行なう（Ｓ８）。一方、出湯温の温度上昇
が認められないときは（Ｓ７；ＮＯ）、ガス供給と点火
が行なわれ無かったとみなし、火炎検出回路以外の故障
と判断し、運転を停止し、その旨を不揮発性メモリーに
記憶し、ＬＣＤの表示部にコード番号に置き換えた故障
表示を行なう（Ｓ９）。On the other hand, when the flame is not detected by the flame detection rod 2 even after the lapse of a predetermined time (S5; NO), the outlet hot water temperature detecting means and the incoming water temperature detecting means are provided so as to prevent an erroneous determination due to a change in the incoming water temperature. It is determined whether or not there is a rise in the hot water outlet temperature based on the difference in the detected temperature of (S7). When the rise of the hot water temperature is recognized (S7; YES), it is considered that gas supply and ignition have been performed, and it is determined that a part other than the part related to gas supply and ignition, that is, a part related to the flame detection circuit has failed, and operation is started. Is stopped, the fact is stored in the non-volatile memory, and the failure display in which the code number is replaced is displayed on the display section of the LCD (S8). On the other hand, when the rise of the hot water temperature is not recognized (S7; NO), it is considered that the gas supply and the ignition have not been performed, it is determined that there is a failure other than the flame detection circuit, the operation is stopped, and that effect is nonvolatile. The failure display is stored in the memory and replaced with the code number on the LCD display (S9).
【００１３】この様に本実施例のガス給湯器によれば、
不着火異常時に出湯の温度上昇の有無を確認し、故障部
位がガスの供給と点火に関する部位かそれ以外の部位、
即ち、火炎検知に関する部位かに区分けするので検査対
象が少なくなり修理時間が短縮できてガス給湯器のメン
テナンス性能が向上する。Thus, according to the gas water heater of this embodiment,
Check the temperature rise of the hot water at the time of non-ignition abnormality, the failure part is related to gas supply and ignition or other parts,
That is, since the parts are classified into those related to flame detection, the inspection target is reduced, the repair time can be shortened, and the maintenance performance of the gas water heater is improved.
【００１４】また、出湯の温度上昇を湯温と入水温の差
により検出するので誤差がなく確実に判断できる。この
様に本実施例のガス給湯器によれば、簡単な構成で故障
部位が限定できメンテナンス性が向上する。以上本発明
の実施例について説明したが、本発明はこうした実施例
に何等限定されるものではなく、例えば火炎の検出に熱
電素子を適用するもので有っても良く、本発明の要旨を
逸脱しない範囲に於いて、種々なる態様で実施し得る事
は勿論である。Further, since the rise of the hot water temperature is detected by the difference between the hot water temperature and the hot water temperature, it is possible to make a reliable judgment without any error. As described above, according to the gas water heater of the present embodiment, the failure site can be limited with a simple configuration, and the maintainability is improved. Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and for example, a thermoelectric element may be applied to the detection of flames, which deviates from the gist of the present invention. It is needless to say that the present invention can be carried out in various modes as long as it does not.
【００１５】[0015]
【発明の効果】以上詳述したように、本発明のガス給湯
器によれば、不着火異常時に出湯の温度上昇を確認する
という簡単な構成で、その原因となる故障推定範囲を狭
くでき検査点数が減少し、ガス給湯器のメンテナンス性
が向上するという優れた効果を奏する。As described in detail above, according to the gas water heater of the present invention, it is possible to narrow the failure estimation range that causes it with a simple structure for confirming the temperature rise of the hot water when a misfire occurs, and perform inspection. The excellent effect that the number of points is reduced and the maintainability of the gas water heater is improved.
【図１】一実施例としてのガス給湯器の概略構成図であ
る。FIG. 1 is a schematic configuration diagram of a gas water heater as one embodiment.
【図２】一実施例としてのガス給湯器のコントローラの
作動の概要を示す流れ図である。FIG. 2 is a flowchart showing an outline of operation of a controller of the gas water heater as one embodiment.
１…バーナ ２…火炎検出ロッド ３…イグナイター ４…出湯温センサ ５…入水温センサ ７…給水管 ８…出湯管 １２…熱交換器 １３…コントローラ １５…リモコン １７…ケーシング 1 ... Burner 2 ... Flame detection rod 3 ... Igniter 4 ... Hot water temperature sensor 5 ... Inlet water temperature sensor 7 ... Water supply pipe 8 ... Hot water pipe 12 ... Heat exchanger 13 ... Controller 15 ... Remote control 17 ... Casing
Claims (2)
スバルブと上記バーナの燃焼熱により通水を加熱する熱
交換器と、 上記ガスバルブを開いて上記バーナの燃焼を開始させる
点火手段と、 上記バーナの燃焼火炎を検出する火炎検出手段と、 上記熱交換器の出湯温度を検出する出湯温検出手段とを
備えたガス給湯器において、 点火動作を作動させた後、上記火炎検出手段により火炎
が検出されず、かつ上記出湯温検出手段により上記出湯
温度の上昇が検出されたとき上記火炎検出手段の故障と
判定する故障判定手段を設けたことを特徴とするガス給
湯器。1. A burner for burning a fuel gas, a gas valve for supplying a fuel gas by opening a gas flow path to the burner, a heat exchanger for heating water through combustion heat of the burner, and the gas valve for opening. In the gas water heater provided with an ignition means for starting combustion of the burner, a flame detection means for detecting combustion flame of the burner, and a hot water temperature detection means for detecting hot water temperature of the heat exchanger, an ignition operation is performed. After activating the above, a failure determination means for determining a failure of the flame detection means is provided when no flame is detected by the flame detection means and an increase in the hot water temperature is detected by the hot water temperature detection means. Gas water heater characterized by.
温検出手段を備え、上記入水温検出手段により検出した
入水温と上記出湯温検出手段により検出した出湯温との
差に基づいて上記出湯温の上昇を判定することを特徴と
する請求項１記載のガス給湯器。2. An inlet water temperature detecting means for detecting an inlet water temperature of the heat exchanger is provided, and the above-mentioned is based on a difference between the inlet water temperature detected by the inlet water temperature detecting means and the outlet hot water temperature detected by the outlet hot water temperature detecting means. The gas water heater according to claim 1, wherein an increase in hot water temperature is determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13292895A JP3403862B2 (en) | 1995-05-02 | 1995-05-02 | Gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13292895A JP3403862B2 (en) | 1995-05-02 | 1995-05-02 | Gas water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08303764A true JPH08303764A (en) | 1996-11-22 |
| JP3403862B2 JP3403862B2 (en) | 2003-05-06 |
Family
ID=15092781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13292895A Expired - Fee Related JP3403862B2 (en) | 1995-05-02 | 1995-05-02 | Gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3403862B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100448521B1 (en) * | 2001-11-19 | 2004-09-13 | 주식회사 경동보일러 | Apparatus for controlling hot water of boiler |
| CN112371917A (en) * | 2020-11-02 | 2021-02-19 | 丹东大王精铸有限公司 | Tool for rapidly confirming UT detection point of sand casting product and manufacturing method |
-
1995
- 1995-05-02 JP JP13292895A patent/JP3403862B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100448521B1 (en) * | 2001-11-19 | 2004-09-13 | 주식회사 경동보일러 | Apparatus for controlling hot water of boiler |
| CN112371917A (en) * | 2020-11-02 | 2021-02-19 | 丹东大王精铸有限公司 | Tool for rapidly confirming UT detection point of sand casting product and manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3403862B2 (en) | 2003-05-06 |
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