JP3551496B2 - Hot water storage system - Google Patents

Hot water storage system Download PDF

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Publication number
JP3551496B2
JP3551496B2 JP26115694A JP26115694A JP3551496B2 JP 3551496 B2 JP3551496 B2 JP 3551496B2 JP 26115694 A JP26115694 A JP 26115694A JP 26115694 A JP26115694 A JP 26115694A JP 3551496 B2 JP3551496 B2 JP 3551496B2
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Japan
Prior art keywords
hot water
pipe
water supply
water storage
mixing
Prior art date
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Expired - Fee Related
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JP26115694A
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Japanese (ja)
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JPH08100951A (en
Inventor
隆晴 橋間
彰 木戸脇
宏明 田中
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Noritz Corp
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Noritz Corp
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Description

【0001】
【産業上の利用分野】
本発明は、貯湯式の給湯装置、例えばセミ貯湯式の給湯装置に関し、貯湯缶体内に貯湯された高温の温水を水と混合して、所定の設定給湯温度にして給湯することができると共に、貯湯缶体内に風呂追い焚き用の熱交換コイルや暖房用の熱交換コイルを通して風呂追い焚き運転や暖房運転を可能とした貯湯式給湯装置に関する。
【0002】
【従来の技術】
従来、セミ貯湯タイプといわれる、比較的貯湯量の小さい貯湯缶体を備えた給湯装置においては、一般に、貯湯量の小さい缶体に貯湯された比較的高温の温水を、水と混水することで設定給湯温度の温水を給湯するようにしている。このため温水と水とを所定の設定給湯温度に混合調節するための混合調節器が設けられている。そして従来は、混合調節した後の温水温度、即ち給湯温度を検出する給湯温度センサが故障した場合には、給湯使用者が火傷等を負ったりしないように安全動作として、貯湯缶体のバーナの燃焼運転を停止する構成としていた。
【0003】
【発明が解決しようとする課題】
ところが、上記従来の貯湯式給湯装置では、給湯温度センサが故障した場合に、貯湯缶体のバーナの燃焼を停止する構成とさせているため、貯湯缶体の貯湯槽に対して風呂追い焚き用の熱交換コイルや暖房用の熱交換コイルを配設して、風呂追い焚き運転や暖房運転を併せて行う給湯装置においては、給湯温度センサの故障によりバーナの燃焼運転停止がなされてしまうことで、関係のない風呂追い焚き運転や暖房運転もできなくなるという問題があった。
【0004】
そこで本発明は、上記従来装置の欠点を解消し、給湯温度センサが故障した場合においても、風呂追い焚き運転や暖房運転を引き続き行うことができ、しかも給湯運転においては、少なくとも使用者が火傷等を負わないようにすることができる貯湯式給湯装置の提供を目的とする。
【0005】
【課題を解決するための手段】
上記目的を達成するため、本発明の貯湯式給湯装置は、加熱用のバーナと該バーナによって加熱される給湯用の貯湯槽を備え且つ暖房や風呂追い焚きのための熱交換コイルを前記貯湯槽内に配設した貯湯缶体と、該貯湯缶体への入水管と、前記貯湯缶体からの出湯管と、前記入水管の途中から分岐して出湯管へ直接接続する混水用のバイパス管と、該バイパス管と前記出湯管との合流点にあって前記バイパス管側からの水量と前記出湯管側からの温水量との混合比を調節して設定給湯温度の温水とする混合調節器と、該混合調節器から下流に配設される給湯管と、該給湯管に設けられる給湯温度センサとを備えた貯湯式給湯装置であって、前記給湯温度センサが故障した場合に、安全動作として前記貯湯缶体のバーナの運転停止を指令することなく、代わりに安全動作として前記混合調節器のバイパス管側通路全開状態を指令するコントローラを設けたことを特徴としている。
【0006】
【作用】
上記本発明の特徴によれば、運転中において給湯温度センサが、断線や短絡等により故障した場合に、その故障情報を受けたコントローラは、安全動作として、混合調節器に対してバイパス管側通路の全開指令を出し、バーナの運転については運転停止指令は出さない。これによって、引き続きバーナによる貯湯缶体の加熱運転が可能となり、風呂追い焚き運転や暖房運転も支障なく行われる。一方、給湯温度センサの故障中に給湯がなされた場合には、バイパス管側通路が全開状態に維持されているので、出湯管からの温水に対してバイパス管からの水が大量に混水されることになり、この結果、給湯温度が下がり、所定の設定給湯温度の温水を供給することができなくなるが、使用者に火傷等を負わすと言った問題が解消される。
【0007】
【実施例】
以下に本発明を実施例に基づいて説明する。図1は本発明実施例を示す貯湯式給湯装置の全体構成図、図2はコントローラによる制御フローチャートである。
【0008】
図1において、貯湯缶体10に対して入水管20と出湯管40が接続されており、貯湯缶体10の近くで前記入水管20から分岐されたバイパス管30が出湯管40に接続されている。バイパス管30の出湯管40への合流点には混合調節器50が設けられている。混合調節器50よりも下流は給湯管60になっている。
前記貯湯缶体10は、セミ貯湯タイプの貯湯缶体とし、缶体10内下部に燃焼室11が設けられ、石油バーナ12による燃焼が行われる。前記石油バーナ12はガスバーナであってもよい。前記燃焼室11から立設する排気管13の外側は貯湯槽14となっており、温水が貯湯される。貯湯槽14には前記排気管13に近い方に暖房用熱交換コイル15が設けられ、遠い方に風呂追い焚き用熱交換コイル16が設けられている。また貯湯缶体10内の貯湯温度を検出する貯湯温度センサ17が設けられている。
【0009】
前記入水管20には入水温度センサ21と入水流量センサ22とが設けられている。また前記混合調節器50よりも下流の給湯管60に給湯温度センサ61、給湯流量センサ62が設けられている。混合調節器50を通って給湯管60に送り込まれた温水は末端の給湯カラン63から供され、また途中で分岐された風呂給湯管64を通って浴槽に供されたりする。
70は装置の動作を制御するコントローラで、マイコンを内蔵し、装置各部のセンサからの情報やリモコンからの指令を入力し、所定のプログラムに従って所定の制御動作を石油バーナ12や混合調節器50、その他に出力する。
【0010】
前記コントローラ70による給湯運転制御例を、図2も参照して説明すると、今、給湯カラン63等が開いて、給湯が開始されると、コントローラ70は、入水温度センサ21からの入水温度、貯湯温度センサ17からの貯湯温度、及び使用者等によって設定された設定給湯温度とから、設定給湯温度の温水が給湯管60に給湯されるように混合調節器50によるバイパス管30からの水と出湯管40からの温水との混合比を演算して、その混合比となるように混合調節器50を調節制御する(S1)。給湯運転中は一定の時間間隔毎に、また設定給湯温度が変更される都度に再演算して適当な混合比を確保する。
そして給湯運転中等において、給湯温度センサ61からの入力信号により給湯温度センサ61が故障であるとコントローラが判断した場合には(S2)、コントローラ70は、安全動作として、混合調節器50に対してバイパス管側通路を全開状態とする指令を出す(S3)。よって混合調節器50は給湯温度センサ61が故障状態にある間、バイパス管30からの通路を全開に維持することになる。前記において、故障を判定するとコントローラ70は給湯温度センサ61の故障表示をコントローラ70やリモコン等の表示部に行う(S3)。
前記給湯温度センサ61の故障は、給湯温度センサ61側からの信号が、給湯温度センサ61の断線状態や短絡状態を示す信号の場合、その他の異常な信号として予めコントローラ70に記憶されている信号である場合に、コントローラ70が故障であると判定する。そして故障を判定すると、コントローラ70は給湯温度センサ61の故障表示をコントローラ70やリモコン等の表示部に行う。
【0011】
上記において給湯温度センサ61の故障が判定されても、コントローラ70は安全動作指令として石油バーナ12の運転停止指令は出さない構成としている。これによって、石油バーナ12は通常に燃焼することができ、その燃焼によって燃焼缶体10は引き続き所定の貯湯温度に加熱維持されることができ、暖房用熱交換コイル15による正常な熱交換が確保され、暖房運転を引き続き支障なく行うことができる。同様に風呂追い焚き用熱交換コイル16による正常な熱交換が確保され、風呂追い焚き運転を引き続き支障なく行うことができる。
【0012】
【発明の効果】
本発明は以上の構成よりなり、請求項1に記載の貯湯式給湯装置によれば、給湯温度センサが故障した場合に、安全動作として前記貯湯缶体のバーナの運転停止を指令することなく、代わりに安全動作として前記混合調節器のバイパス管側通路全開状態を指令するコントローラを設けたので、バーナについては引き続き通常に運転することができ、よって貯湯缶体を所定の貯湯温度に維持することができるので、暖房用熱交換コイルや風呂追い焚き用熱交換コイルよる正常な熱交換を確保することができ、暖房運転、風呂追い焚き運転を引き続き支障なく行うことができる。そして一方、給湯運転については、出湯管からの温水に対してバイパス管からの水が大量に混水されることになり、所定の設定給湯温度の温水を供給することができなくなるが、使用者に火傷等を負わすと言った問題を確実に解消することができる。
【図面の簡単な説明】
【図1】本発明実施例を示す貯湯式給湯装置の全体構成図である。
【図2】コントローラによる制御フローチャートである。
【符号の説明】
10 貯湯缶体
12 石油バーナ
14 貯湯槽
15 暖房用熱交換コイル
16 風呂追い焚き用熱交換コイル
20 入水管
30 バイパス管
40 出湯管
50 混合調節器
60 給湯管
61 給湯温度センサ
70 コントローラ
[0001]
[Industrial applications]
The present invention relates to a hot water supply type hot water supply device, for example, a semi-hot water supply type hot water supply device, by mixing high-temperature hot water stored in a hot water storage canister with water, it is possible to supply hot water to a predetermined set hot water supply temperature, The present invention relates to a hot-water storage type hot water supply device that enables a bath reheating operation and a heating operation through a heat exchange coil for bath reheating and a heat exchange coil for heating in a hot water storage body.
[0002]
[Prior art]
Conventionally, in a hot water supply apparatus having a hot water storage canister having a relatively small amount of hot water, which is referred to as a semi-hot water storage type, generally, relatively high-temperature hot water stored in a can body having a small amount of hot water is mixed with water. Is used to supply hot water at the set hot water supply temperature. Therefore, a mixing controller for mixing and adjusting the hot water and the water to a predetermined set hot water supply temperature is provided. Conventionally, when the hot water temperature sensor that detects the hot water temperature after the mixing and adjustment, that is, the hot water temperature, fails, as a safe operation so that the hot water user does not suffer a burn or the like, the burner of the hot water storage can body is operated. The combustion operation was stopped.
[0003]
[Problems to be solved by the invention]
However, in the above-mentioned conventional hot water storage type hot water supply apparatus, when the hot water supply temperature sensor fails, the burner of the hot water storage body is stopped burning. In a hot water supply device that is equipped with a heat exchange coil for heating and a heat exchange coil for heating, and also performs a bath reheating operation and a heating operation, the failure of the hot water supply temperature sensor causes the burner combustion operation to be stopped. However, there was a problem that unrelated bath reheating operation and heating operation could not be performed.
[0004]
Therefore, the present invention solves the above-described drawbacks of the conventional apparatus, so that even if the hot water supply temperature sensor fails, it is possible to continue the bath reheating operation or the heating operation. It is an object of the present invention to provide a hot-water storage type hot water supply device that can prevent the occurrence of water.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a hot water storage type hot water supply device of the present invention includes a heating burner and a hot water storage tank for hot water heated by the burner, and includes a heat exchange coil for heating or reheating a bath. A hot water storage can body disposed therein, a water inlet pipe to the hot water storage can body, a hot water outlet pipe from the hot water storage can body, and a bypass for water mixing that branches off from the middle of the water inlet pipe and is directly connected to the hot water outlet pipe. Mixing control at the junction of the pipe and the bypass pipe and the tapping pipe to adjust the mixing ratio between the amount of water from the bypass pipe side and the quantity of hot water from the tapping pipe side to obtain hot water at a set hot water supply temperature. A hot water supply apparatus provided with a water heater, a hot water supply pipe provided downstream from the mixing controller, and a hot water supply temperature sensor provided in the hot water supply pipe. As an operation, it is instructed to stop the operation of the burner of the hot water storage body. No is characterized in that a controller for commanding the bypass pipe side passage fully open state of the mixing adjuster as safe operation instead.
[0006]
[Action]
According to the feature of the present invention, when the hot water supply temperature sensor fails during operation due to disconnection, short circuit, or the like, the controller having received the failure information, as a safe operation, performs a bypass pipe side passage with respect to the mixing controller. And a stop command is not issued for burner operation. Thereby, the heating operation of the hot water storage can body by the burner can be continued, and the bath reheating operation and the heating operation can be performed without any trouble. On the other hand, when hot water is supplied during the failure of the hot water supply temperature sensor, the bypass pipe side passage is maintained in the fully opened state, so that a large amount of water from the bypass pipe is mixed with hot water from the tapping pipe. As a result, the hot water supply temperature drops, and it becomes impossible to supply hot water at a predetermined set hot water supply temperature, but the problem that a user is burned or the like is solved.
[0007]
【Example】
Hereinafter, the present invention will be described based on examples. FIG. 1 is an overall configuration diagram of a hot water supply type hot water supply apparatus according to an embodiment of the present invention, and FIG. 2 is a control flowchart by a controller.
[0008]
In FIG. 1, a water inlet pipe 20 and a water outlet pipe 40 are connected to the hot water storage canister 10, and a bypass pipe 30 branched from the water inlet pipe 20 near the hot water storage canister 10 is connected to the hot water outlet pipe 40. I have. At the junction of the bypass pipe 30 and the tapping pipe 40, a mixing controller 50 is provided. Downstream of the mixing controller 50 is a hot water supply pipe 60.
The hot water storage body 10 is a semi-hot water storage type hot water storage body, and a combustion chamber 11 is provided at a lower portion in the can body 10, and combustion by an oil burner 12 is performed. The oil burner 12 may be a gas burner. The outside of the exhaust pipe 13 erected from the combustion chamber 11 is a hot water storage tank 14 for storing hot water. In the hot water storage tank 14, a heat exchange coil 15 for heating is provided near the exhaust pipe 13, and a heat exchange coil 16 for reheating the bath is provided far away. Further, a hot water storage temperature sensor 17 for detecting the temperature of hot water stored in hot water storage can 10 is provided.
[0009]
The water inlet pipe 20 is provided with a water temperature sensor 21 and a water flow sensor 22. A hot water supply temperature sensor 61 and a hot water supply flow rate sensor 62 are provided in a hot water supply pipe 60 downstream of the mixing controller 50. The hot water sent to the hot water supply pipe 60 through the mixing controller 50 is supplied from a hot water supply curan 63 at the end, and is supplied to a bathtub through a bath hot water supply pipe 64 branched on the way.
Reference numeral 70 denotes a controller for controlling the operation of the apparatus, which incorporates a microcomputer, inputs information from sensors of various parts of the apparatus and commands from a remote controller, and performs predetermined control operations according to a predetermined program on the oil burner 12, the mixing controller 50, and the like. Other output.
[0010]
An example of the hot water supply operation control by the controller 70 will be described with reference to FIG. 2. Now, when the hot water supply curan 63 or the like is opened and hot water supply is started, the controller 70 sets the input water temperature from the input water temperature sensor 21 and the hot water storage. From the hot water storage temperature from the temperature sensor 17 and the set hot water supply temperature set by the user or the like, the mixing controller 50 mixes the hot water with the hot water at the set hot water supply temperature with the water from the bypass pipe 30 and the hot water. The mixing ratio with the hot water from the pipe 40 is calculated, and the mixing controller 50 is adjusted and controlled to have the mixing ratio (S1). During the hot water supply operation, an appropriate mixing ratio is ensured by performing a recalculation at regular time intervals and each time the set hot water supply temperature is changed.
When the controller determines that the hot water supply temperature sensor 61 is faulty based on an input signal from the hot water supply temperature sensor 61 during a hot water supply operation or the like (S2), the controller 70 issues a safe operation to the mixing controller 50. A command to make the bypass pipe side passage fully open is issued (S3). Therefore, the mixing controller 50 keeps the path from the bypass pipe 30 fully open while the hot water supply temperature sensor 61 is in a failure state. In the above, when a failure is determined, the controller 70 displays a failure of the hot water supply temperature sensor 61 on the controller 70 or a display unit such as a remote controller (S3).
If the signal from the hot water supply temperature sensor 61 is a signal indicating a disconnection state or a short-circuit state of the hot water supply temperature sensor 61, a signal stored in advance in the controller 70 as another abnormal signal Is determined, the controller 70 is determined to have failed. When the failure is determined, the controller 70 displays the failure of the hot water supply temperature sensor 61 on the controller 70 or a display unit such as a remote controller.
[0011]
Even if a failure of the hot water supply temperature sensor 61 is determined in the above, the controller 70 does not issue a command to stop operating the oil burner 12 as a safe operation command. As a result, the oil burner 12 can burn normally, and by the combustion, the combustion can 10 can be continuously heated and maintained at a predetermined hot water storage temperature, and normal heat exchange by the heating heat exchange coil 15 is ensured. Thus, the heating operation can be continuously performed without any trouble. Similarly, normal heat exchange by the heat exchange coil 16 for bath reheating is ensured, and the bath reheating operation can be continuously performed without any trouble.
[0012]
【The invention's effect】
The present invention has the above configuration, and according to the hot water supply type hot water supply device of claim 1, when the hot water supply temperature sensor fails, without instructing the burner of the hot water storage body to stop operating as a safe operation, Instead, a controller is provided to command the bypass pipe side passage fully open state of the mixing controller as a safe operation, so that the burner can continue to operate normally, and thus the hot water storage can is maintained at a predetermined hot water storage temperature. Therefore, normal heat exchange by the heat exchange coil for heating or the heat exchange coil for bath reheating can be ensured, and the heating operation and the bath reheating operation can be continuously performed without any trouble. On the other hand, in the hot water supply operation, a large amount of water from the bypass pipe is mixed with the hot water from the tapping pipe, and it becomes impossible to supply hot water at a predetermined set hot water supply temperature. Thus, the problem of causing a burn or the like can be surely solved.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a hot water supply type hot water supply apparatus according to an embodiment of the present invention.
FIG. 2 is a control flowchart by a controller.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Hot water storage can 12 Oil burner 14 Hot water storage tank 15 Heat exchange coil for heating 16 Heat exchange coil for bath reheating 20 Water inlet pipe 30 Bypass pipe 40 Hot water pipe 50 Mixing controller 60 Hot water supply pipe 61 Hot water supply temperature sensor 70 Controller

Claims (1)

加熱用のバーナと該バーナによって加熱される給湯用の貯湯槽を備え且つ暖房や風呂追い焚きのための熱交換コイルを前記貯湯槽内に配設した貯湯缶体と、該貯湯缶体への入水管と、前記貯湯缶体からの出湯管と、前記入水管の途中から分岐して出湯管へ直接接続する混水用のバイパス管と、該バイパス管と前記出湯管との合流点にあって前記バイパス管側からの水量と前記出湯管側からの温水量との混合比を調節して設定給湯温度の温水とする混合調節器と、該混合調節器から下流に配設される給湯管と、該給湯管に設けられる給湯温度センサとを備えた貯湯式給湯装置であって、前記給湯温度センサが故障した場合に、安全動作として前記貯湯缶体のバーナの運転停止を指令することなく、代わりに安全動作として前記混合調節器のバイパス管側通路全開状態を指令するコントローラを設けたことを特徴とする貯湯式給湯装置。A hot water storage canister comprising a heating burner and a hot water storage tank for hot water supply heated by the burner, and a heat exchange coil for heating or reheating the bath disposed in the hot water storage tank; A water inlet pipe, a hot water pipe from the hot water storage body, a bypass pipe for water mixing that branches off from the middle of the hot water pipe and is directly connected to the hot water pipe, and a junction of the bypass pipe and the hot water pipe. A mixing controller that adjusts a mixing ratio between the amount of water from the bypass pipe side and the amount of hot water from the tapping pipe side to obtain hot water at a set hot water supply temperature; and a hot water supply pipe disposed downstream from the mixing regulator. And a hot water supply temperature sensor provided in the hot water supply pipe, wherein when the hot water supply temperature sensor fails, the burner of the hot water storage can is instructed to stop operating as a safe operation. Alternatively, as a safe operation, the mixing regulator Hot water storage type water heater, characterized in that a controller for instructing the scan line side passage fully opened.
JP26115694A 1994-09-30 1994-09-30 Hot water storage system Expired - Fee Related JP3551496B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26115694A JP3551496B2 (en) 1994-09-30 1994-09-30 Hot water storage system

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Application Number Priority Date Filing Date Title
JP26115694A JP3551496B2 (en) 1994-09-30 1994-09-30 Hot water storage system

Publications (2)

Publication Number Publication Date
JPH08100951A JPH08100951A (en) 1996-04-16
JP3551496B2 true JP3551496B2 (en) 2004-08-04

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JP26115694A Expired - Fee Related JP3551496B2 (en) 1994-09-30 1994-09-30 Hot water storage system

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CN111578505B (en) * 2020-04-10 2021-05-18 宁波方太厨具有限公司 Control method of dual-purpose furnace

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