JP4127260B2 - Hot water system - Google Patents
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- JP4127260B2 JP4127260B2 JP2004316797A JP2004316797A JP4127260B2 JP 4127260 B2 JP4127260 B2 JP 4127260B2 JP 2004316797 A JP2004316797 A JP 2004316797A JP 2004316797 A JP2004316797 A JP 2004316797A JP 4127260 B2 JP4127260 B2 JP 4127260B2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 264
- 238000001514 detection method Methods 0.000 claims description 4
- 239000008400 supply water Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 45
- 238000009835 boiling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
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Description
本発明は、湯と水との混合手段を備えた給湯システムに関するものである。 The present invention relates to a hot water supply system provided with mixing means for hot water and water.
従来の給湯システムは、流量センサ等の水流検出手段により、湯の供給停止信号を検出したときにその直前の湯水混合弁の開度を記憶し、流量センサ等の水流検出手段により、湯の供給有り信号を検出したとき、給湯停止検出時に記憶した開度を湯水混合弁へ出力する。(例えば特許文献1参照) In a conventional hot water supply system, when a hot water supply stop signal is detected by a water flow detecting means such as a flow rate sensor, the opening degree of the hot water mixing valve immediately before that is memorized, and the hot water supply means such as a flow rate sensor supplies hot water. When the presence signal is detected, the opening degree stored at the time of detecting the hot water supply stop is output to the hot water / mixing valve. (For example, see Patent Document 1)
従来の給湯システムは、流量センサ等の水流検出手段により、湯の供給停止信号を検出したときにその直前の湯水混合弁の開度を記憶しているが、給湯停止動作は、給湯流量が徐々に降下していき、給湯停止に至る。給湯流量が低い場合、湯と水の比重の差により、湯と水のバランスが崩れる傾向にあり、給湯停止直前では、高温湯または低温湯を検出することにより、湯水混合弁の制御開度を変更してしまう。制御開度を安定開度から変更された状態で、給湯停止を検出することにより、その時の開度を記憶し、次の給湯開始時はその記憶開度にて湯の供給がされるため、意図している温度と異なる温度で給湯されてしまう。 In the conventional hot water supply system, when the hot water supply stop signal is detected by the water flow detection means such as a flow rate sensor, the opening degree of the hot water mixing valve immediately before that is memorized. Descends to stop hot water supply. When the hot water flow rate is low, the balance between hot water and water tends to be lost due to the difference in the specific gravity of hot water and water. Just before hot water supply is stopped, the hot water or low temperature hot water is detected to increase the control opening of the hot water mixing valve. It will change. By detecting a hot water supply stop in a state where the control opening is changed from the stable opening, the opening at that time is stored, and hot water is supplied at the stored opening at the start of the next hot water supply, Hot water is supplied at a temperature different from the intended temperature.
本発明は、上記のような問題点を解決する為になされたもので、再給湯時、安定した温度での給湯が可能となる給湯システムを提供することを目的とする。 The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a hot water supply system capable of supplying hot water at a stable temperature when reheating hot water.
本発明に係る給湯システムは、貯湯槽と、水を供給する給水管と、この給水管を通る水の温度を検出する給水水温センサと、貯湯槽に貯えられた湯を供給する給湯管と、貯湯槽から給湯管へ供給される湯の温度を検出する給湯湯温センサと、給水管の水と給湯管の湯とを混合する湯水混合弁と、この湯水混合弁からの混合湯を供給する混合給湯管と、混合給湯管へ供給される混合湯の流れを検出する流量センサと、混合給湯管を流れる混合湯の温度を検出する混合湯温センサと、湯水混合弁の開度を制御する制御部と、給湯湯温を設定するリモコンとを備え、
制御部は、流量センサが混合給湯管の混合湯の流れを無しから有りを検出したとき、給湯湯温センサの検出値と給水水温センサの検出値とリモコンで設定された給湯湯温の設定値とに基づいて電動湯水混合弁の起動開度を算出し、流量センサが混合湯の流れを検出し続けているとき、給湯湯温センサの検出値と給水水温センサの検出値とリモコンで設定された給湯湯温の設定値と混合湯温センサの検出値との差分から湯水混合弁の開度を制御し、混合給湯管を流れる混合湯の温度を検出する混合湯温センサの検出値がリモコンで設定された給湯湯温の設定値と等しくなったときに、湯水混合弁の現在開度を安定開度として記憶し、流量センサが混合給湯管の混合湯の流れの停止を検出したら、制御部が安定開度を記憶している場合は、湯水混合弁の開度を記憶された安定開度へ移動させ、制御部が安定開度を記憶していないときは、流量センサが混合湯の流れが無しから有りを検出した時に算出された起動開度へ移動させ、それぞれ所定時間待機させ、所定時間内に次回の給湯開始が行われた際に、その待機開度から給湯を開始させるように制御することを特徴とするものである。
A hot water supply system according to the present invention includes a hot water storage tank, a water supply pipe for supplying water, a water temperature sensor for detecting the temperature of water passing through the water supply pipe, a hot water supply pipe for supplying hot water stored in the hot water storage tank , supplying the hot water hot water temperature sensor, and the hot and cold water mixing valve for mixing the hot water and hot-water supply pipe of the water supply pipe, the mixed hot water from the hot and cold water mixing valve for detecting the temperature of the hot water to be supplied to the hot water supply pipe from the hot water tank control and mixing hot water supply pipe, a flow rate sensor for detecting the flow of mixed hot water to be supplied to the mixing hot water supply pipe, and mixed hot water temperature sensor for detecting the temperature of the mixed water flowing through the mixing hot water supply pipe, the opening degree of the hot water mixing valve And a remote control for setting the hot water temperature,
When the flow rate sensor detects that there is no flow of mixed hot water in the mixed hot water supply pipe , the control unit sets the detected value of the hot water temperature sensor, the detected value of the hot water temperature sensor, and the hot water temperature set by the remote controller. Based on the value, calculate the opening degree of the electric hot / cold water mixing valve, and when the flow sensor continues to detect the flow of mixed hot water , set the detected value of the hot water temperature sensor, the detected value of the hot water temperature sensor, and the remote control The detected value of the mixed hot water temperature sensor that detects the temperature of the mixed hot water flowing through the mixed hot water supply pipe by controlling the opening degree of the hot water mixed valve from the difference between the set value of the hot water temperature and the detected value of the mixed hot water temperature sensor. When it becomes equal to the set value of the hot water temperature set with the remote controller, the current opening of the hot water mixing valve is stored as a stable opening, and when the flow sensor detects the stop of the flow of mixed hot water in the mixed hot water pipe, If the control unit stores the stable opening, When the valve opening is moved to the stored stable opening and the controller does not store the stable opening, the opening calculated when the flow rate sensor detects that there is no mixed hot water flow And when the next hot water supply start is performed within a predetermined time, the hot water supply is controlled to start from the standby opening degree.
本発明は上述の構成により、給湯中に安定した湯水混合弁の開度を記憶し、次回の給湯開始時は、その安定開度から給湯を開始させるように制御するので、再給湯時の大幅な湯温変動を防ぐことができる。 According to the present invention, the opening degree of the hot and cold water mixing valve that is stable during hot water supply is stored according to the above-described configuration, and when the next hot water supply is started, the hot water supply is controlled to start from the stable opening degree. This can prevent fluctuations in hot water temperature.
実施の形態1.
以下、本発明の実施の形態1について説明する。
図1は本発明の実施の形態1を示す給湯システムの構成図、図2は本発明の実施の形態1を示す給湯システムの制御回路のブロック図、図3は本発明の実施の形態1を示す給湯システムの制御動作のフローチャートである。
1 is a block diagram of a hot water supply
図1において、1は水源から水を各部に供給する給水管、2は水源から供給される水の圧力を減圧する減圧弁、3は水または湯を貯める貯湯槽、4は貯湯槽1内の水を沸き上げる発熱体、5は貯湯槽3内の水の沸き上げ制御時に用いる沸き上げ湯温センサ、6は給水管1から分岐して貯湯槽2の下部に接続される貯湯槽給水管、7は沸き上げにより体積膨張した湯を排水する逃がし弁、8は設定湯温を供給するための電動湯水混合弁、9は貯湯槽3から供給される給湯湯温を検出する給湯湯温センサ、10はその湯を湯水混合弁8に供給する給湯管、11は供給される水温を検出する給水水温センサ、12は湯水混合弁8により設定湯温に混合された湯を供給する混合給湯管、13は給湯の供給を検出する流量センサ、14は湯水混合弁8で混合された混合湯の温度を検知する混合湯温センサ、15は給湯システム全体の制御を司る制御部であり、タイマ機能、メモリ(記憶手段)を有し、リモコン16の各設定や前記沸き上げ湯温センサ5、給湯湯温センサ9、給水水温センサ11、流量センサ13、混合湯温センサ14などの検出値に基づき、前記発熱体4への通電や電動湯水混合弁8の駆動を制御する。
In FIG. 1, 1 is a water supply pipe for supplying water to each part from a water source, 2 is a pressure reducing valve for reducing the pressure of water supplied from the water source, 3 is a hot water storage tank for storing water or hot water, and 4 is in the hot
次に実施の形態1の動作について、図3のフローチャートを用いて説明する。
蛇口等が開かれることにより、流量センサ13にて湯の流れを検出した場合(処理S1)、給湯湯温センサ9と、給水水温センサ11と、リモコン16で設定された給湯湯温の設定値から、湯水混合弁8の起動開度K1を制御部15で算出する(処理S2)。電動湯水混合弁の駆動範囲を0[STEP]〜1050[STEP]、給湯湯温をTh、給水水温をTw、給湯湯温設定値をTsとすると、起動開度K1は、以下の式で求められる。
Next, the operation of the first embodiment will be described using the flowchart of FIG.
When a flow of hot water is detected by the
処理S1にて給湯開始信号を検出していない場合は、処理S3へ進み、電動湯水混合弁8の現在開度Kgを0[STEP]、安定開度Kaを0[STEP]とし、電動湯水混合弁8を水側全開の状態で、処理S1へ戻る。次に処理S4へ進み、電動湯水混合弁8の現在開度Kgを起動開度K1まで駆動し、混合湯温センサ14の検出温度T1が、リモコン16で設定された給湯湯温の設定値Tsと比較し(処理S5)、検出温度T1とリモコン16の給湯湯温の設定値Tsとが同一であれば、処理S6へ進み、総補正開度Ksを安定開度Kaとして記憶し、処理S10へ進む。処理S5にて検出温度T1とリモコン16の給湯湯温の設定値Tsが異なっていれば、処理S7へ進み、補正開度Kcを算出する。補正開度Kcは、以下の式で求められる。
If the hot water supply start signal is not detected in process S1, the process proceeds to process S3, where the current opening Kg of the electric hot
補正開度Kc算出後、処理S8へ進み、総補正開度Ksへ補正開度Kcを加算する。
次に処理S9へ進み、電動湯水混合弁8の現在開度Kgが起動開度K1+総補正開度Ksまで駆動し、処理S10へ進む。処理S10にて流量センサ13により給湯停止を検出していない場合は、処理S5へ戻り、給湯停止を検出した場合は、処理S11へ進み、給湯停止タイマtをスタートさせる。
After calculating the correction opening Kc, the process proceeds to step S8, and the correction opening Kc is added to the total correction opening Ks.
Next, it progresses to process S9, the present opening degree Kg of the electric hot / cold
次に処理処理S12へ進み、安定開度Kaが記憶されているか確認し、記憶さていれば、処理S13へ進み、電動湯水混合弁8の現在開度Kgが起動開度K1+安定開度Kaまで駆動し、処理S15へ進む。
処理S12にて安定開度Kaが記憶されていない場合は、処理S14へ進み、電動湯水混合弁8の現在開度Kgが起動開度K1まで駆動し、処理S15へ進む。処理S15にて給湯停止タイマtが所定時間(例えば10分)経過しているか確認し、経過していれば、処理S1へ戻り、経過していなければ、処理S16へ進む。処理S16にて流量センサ13により給湯開始を検出した場合は、処理S5へ進み、給湯停止のままであれば、処理S15へ戻る。
Next, the process proceeds to process S12, where it is confirmed whether or not the stable opening degree Ka is stored. If it is stored, the process proceeds to process S13, where the current opening degree Kg of the electric hot and cold
When stable opening degree Ka is not memorized by processing S12, it progresses to processing S14, current opening degree Kg of electric hot
以上のように、本実施の形態1によれば、給湯中に、リモコン16にて設定された給湯湯温の設定値と、電動湯水混合弁8にて混合された混合湯の検出湯温が同一値を検出した時の電動湯水混合弁8の開度を安定開度として記憶し、次回給湯開始時は、その安定開度にて給湯が開始される為、蛇口開閉による意図しない温度の給湯を防止できる。
As described above, according to the first embodiment, during the hot water supply, the hot water temperature set value set by the
実施の形態2
本発明の実施の形態2について説明する。
機器の構成については、実施の形態1と同様なので省略する。
A second embodiment of the present invention will be described.
Since the configuration of the device is the same as that of
次に、実施の形態2の動作について、図4のフローチャートを用いて説明する。
処理S1〜処理S15までは、実施の形態1とまったく同一の為、説明は省略する。
処理S15にて給湯停止タイマtが所定時間(例えば10分)経過していなければ、処理S17へ進み、リモコン16にて給湯湯温の設定値の変更が行われたか確認し、変更されていれば、処理S18へ進み、変更されていなければ、処理S16へ進む。処理S18では、停止時補正開度Khを算出する。停止時補正開度Khは、変更前の給湯湯温の設定値をTs、変更後の給湯湯温の設定値をThとすると、以下の式で求められる。
Next, the operation of the second embodiment will be described using the flowchart of FIG.
Since processing S1 to processing S15 is exactly the same as in the first embodiment, description thereof is omitted.
If a predetermined time (for example, 10 minutes) has not elapsed in the hot water supply stop timer t in the process S15, the process proceeds to the process S17, where it is confirmed whether or not the set value of the hot water temperature has been changed by the
停止時補正開度Kh算出後、処理S19へ進み、安定開度Kaが記憶されているか確認し、記憶さていれば、処理S20へ進み、電動湯水混合弁8の現在開度Kgが起動開度K1+安定開度Ka+停止時補正開度Khまで駆動し、処理S16へ進む。処理S19にて安定開度Kaが記憶されていない場合は、処理S21へ進み、電動湯水混合弁8の現在開度Kgが起動開度K1+停止時補正開度Khまで駆動し、処理S15へ進む。
After calculating the stop correction opening degree Kh, the process proceeds to step S19 to check whether the stable opening degree Ka is stored. If it is stored, the process proceeds to step S20, where the current opening degree Kg of the electric hot
処理S16の詳細説明は、実施の形態1と同一の為、省略する。 Since the detailed description of the processing S16 is the same as that of the first embodiment, it is omitted.
以上のように、この実施の形態2によれば、給湯中に、リモコン16にて設定された給湯湯温の設定値と電動湯水混合弁8にて混合された混合湯の温度が同一値を検出した時の電動湯水混合弁8の開度を安定開度として記憶し、給湯停止中に、リモコン16にて給湯湯温の設定値が変更された場合、給湯湯温の変更分の補正開度を停止中の現在開度に加算するため、次回給湯開始時は、給湯湯温の変更後の温度にて給湯が開始される為、蛇口開閉による意図しない温度の給湯を防止できる。
As described above, according to the second embodiment, during the hot water supply, the set value of the hot water temperature set by the
1.貯湯槽
2.減圧弁
3.貯湯槽
4.発熱体
5.沸き上げ湯温センサ
6.貯湯槽給水管
7.逃がし弁
8.電動湯水混合弁
9.給湯湯温センサ
10.給湯管
11.給水水温センサ
12.混合給湯管
13.流量センサ
14.混合湯温センサ
15.制御部
16.リモコン
1. 1.
Claims (2)
前記制御部は、前記流量センサが前記混合給湯管の混合湯の流れを無しから有りを検出したとき、前記給湯湯温センサの検出値と前記給水水温センサの検出値と前記リモコンで設定された給湯湯温の設定値とに基づいて前記電動湯水混合弁の起動開度を算出し、前記流量センサが混合湯の流れを検出し続けているとき、前記給湯湯温センサの検出値と前記給水水温センサの検出値と前記リモコンで設定された給湯湯温の設定値と前記混合湯温センサの検出値との差分から前記湯水混合弁の開度を制御し、前記混合給湯管を流れる混合湯の温度を検出する混合湯温センサの検出値が前記リモコンで設定された給湯湯温の設定値と等しくなったときに、前記湯水混合弁の現在開度を安定開度として記憶し、前記流量センサが前記混合給湯管の混合湯の流れの停止を検出したら、前記制御部が安定開度を記憶している場合は、前記湯水混合弁の開度を記憶された安定開度へ移動させ、前記制御部が安定開度を記憶していないときは、前記流量センサが混合湯の流れが無しから有りを検出した時に算出された起動開度へ移動させ、それぞれ所定時間待機させ、所定時間内に次回の給湯開始が行われた際に、その待機開度から給湯を開始させるように制御することを特徴とする給湯システム。 And hot water tank, a water supply pipe for supplying water, a water supply temperature sensor for detecting the temperature of the water passing through the water supply pipe, a hot water supply pipe for supplying the water stored in the hot water tank, the hot water supply pipe from the hot water tank a hot water supply hot water temperature sensor for detecting the temperature of the hot water supplied to the hot and cold water mixing valve for mixing the hot water of the hot water supply pipe and water in the water supply pipe, mixed hot water supply pipe for supplying a mixed hot water from the hot and cold water mixing valve When a flow rate sensor for detecting the flow of mixed hot water to be supplied to said mixing hot water supply pipe, and mixed hot water temperature sensor for detecting the temperature of the mixed water flowing through the mixing hot water supply pipe, controls the opening of the hot and cold water mixing valve A control unit and a remote control for setting the hot water temperature,
When the flow rate sensor detects that there is no flow of mixed hot water in the mixed hot water supply pipe , the control unit is set with a detection value of the hot water temperature sensor, a detection value of the hot water temperature sensor, and the remote controller. And calculating the starting opening degree of the electric hot / cold water mixing valve based on the set value of the hot water hot water temperature, and when the flow rate sensor continues to detect the flow of mixed hot water, the detected value of the hot water hot water temperature sensor and the Mixing that flows through the mixed hot water pipe by controlling the opening of the hot water mixing valve from the difference between the detected value of the hot water temperature sensor, the set value of the hot water temperature set by the remote controller, and the detected value of the mixed hot water temperature sensor when the detected value of the mixed hot water temperature sensor for detecting the temperature of the hot water becomes equal to the setting of the hot water supply water temperature set by the remote controller, stores the current opening degree of the hot and cold water mixing valve as a stable opening, wherein The flow sensor mixes the mixed hot water pipe If the controller stores a stable opening, the controller moves the opening of the hot and cold water mixing valve to the stored stable opening, and the controller stores the stable opening. If not, the flow rate sensor is moved to the starting opening calculated when it detects that there is no flow of mixed hot water, waits for a predetermined time, and the next hot water supply start is performed within the predetermined time . In this case, a hot water supply system is controlled to start hot water supply from the standby opening.
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