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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hot water
water supply
mixed
hot
mixing valve
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JP2006125773A (en
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康史 本庄
雅勝 中山
利幸 佐久間
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Mitsubishi Electric Corp
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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)

特開平５-１１８６０号公報（第２−５頁、図１−９）JP-A-5-11860 (page 2-5, FIG. 1-9)

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。 Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below.
1 is a block diagram of a hot water supply system showing Embodiment 1 of the present invention, FIG. 2 is a block diagram of a control circuit of the hot water supply system showing Embodiment 1 of the present invention, and FIG. 3 is Embodiment 1 of the present invention. It is a flowchart of control operation | movement of the hot-water supply system shown.

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 water storage tank 1. A heating element for boiling water, 5 is a boiling water temperature sensor used for controlling the boiling of water in the hot water tank 3, 6 is a hot water tank water pipe branched from the water pipe 1 and connected to the lower part of the hot water tank 2, 7 is a relief valve for draining hot water whose volume has been expanded by boiling, 8 is an electric hot water mixing valve for supplying a set hot water temperature, 9 is a hot water temperature sensor for detecting the hot water temperature supplied from the hot water tank 3, 10 is a hot water supply pipe for supplying the hot water to the hot water mixing valve 8, 11 is a hot water temperature sensor for detecting the temperature of the supplied water, 12 is a mixed hot water pipe for supplying hot water mixed to the set hot water temperature by the hot water mixing valve 8, 13 is a flow sensor for detecting the supply of hot water, and 14 is a hot water mixing valve 8. A mixed hot water temperature sensor 15 for detecting the temperature of the mixed hot water, a control unit 15 for controlling the entire hot water supply system, has a timer function and a memory (storage means), and each setting of the remote controller 16 and the boiling Based on the detected values of the hot water temperature sensor 5, the hot water temperature sensor 9, the hot water temperature sensor 11, the flow rate sensor 13, the mixed hot water temperature sensor 14, etc., the energization of the heating element 4 and the drive of the electric hot water mixing valve 8 are controlled. .

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 flow sensor 13 by opening the faucet or the like (processing S1), the set value of the hot water temperature set by the hot water temperature sensor 9, the hot water temperature sensor 11, and the remote controller 16 is set. Then, the starting opening degree K1 of the hot and cold water mixing valve 8 is calculated by the control unit 15 (processing S2). When the driving range of the electric hot water mixing valve is 0 [STEP] to 1050 [STEP], the hot water temperature is Th, the hot water temperature is Tw, and the hot water temperature setting value is Ts, the starting opening degree K1 is obtained by the following equation. It is done.

Figure 0004127260
Figure 0004127260

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 water mixing valve 8 is set to 0 [STEP], the stable opening Ka is set to 0 [STEP], and electric hot water mixing is performed. With the valve 8 fully opened on the water side, the process returns to the processing S1. Next, it progresses to process S4, drives the present opening degree Kg of the electric hot water mixing valve 8 to the starting opening degree K1, and the detected temperature T1 of the mixed hot water temperature sensor 14 is the set value Ts of the hot water temperature set by the remote controller 16. If the detected temperature T1 and the set value Ts of the hot water supply temperature of the remote controller 16 are the same, the process proceeds to step S6, where the total corrected opening Ks is stored as the stable opening Ka, and the process S10 is performed. Proceed to If the detected temperature T1 is different from the set value Ts of the hot water temperature of the remote controller 16 in the process S5, the process proceeds to a process S7 to calculate a corrected opening Kc. The corrected opening degree Kc is obtained by the following equation.

Figure 0004127260
Figure 0004127260

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 water mixing valve 8 drives to the starting opening degree K1 + total correction opening degree Ks, and progresses to process S10. If the hot water supply stoppage is not detected by the flow sensor 13 in the process S10, the process returns to the process S5. If the hot water supply stop is detected, the process proceeds to the process S11, and the hot water supply stop timer t is started.

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 water mixing valve 8 is the starting opening degree K1 + the stable opening degree Ka. Drive and proceed to step S15.
When stable opening degree Ka is not memorized by processing S12, it progresses to processing S14, current opening degree Kg of electric hot water mixing valve 8 drives to starting opening degree K1, and progresses to processing S15. In process S15, it is confirmed whether a hot water supply stop timer t has elapsed a predetermined time (for example, 10 minutes). If it has elapsed, the process returns to process S1, and if not, the process proceeds to process S16. If the flow sensor 13 detects the start of hot water supply in the process S16, the process proceeds to the process S5, and if the hot water supply is stopped, the process returns to the process S15.

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 remote controller 16 and the detected hot water temperature of the mixed hot water mixed by the electric hot water mixing valve 8 are determined. When the same value is detected, the opening degree of the electric hot / cold water mixing valve 8 is stored as a stable opening degree. When the next hot water supply is started, hot water supply is started at the stable opening degree. Can be prevented.

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。 Embodiment 2
A second embodiment of the present invention will be described.
Since the configuration of the device is the same as that of Embodiment 1, it is omitted.

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 remote controller 16. If it has not been changed, the process proceeds to process S16. In the process S18, the corrected correction opening degree Kh is calculated. The correction opening degree Kh at the time of stop is obtained by the following equation, where Ts is the set value of the hot water temperature before the change and Th is the set value of the hot water temperature after the change.

Figure 0004127260
Figure 0004127260

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 water mixing valve 8 is the starting opening degree. Drive to K1 + stable opening degree Ka + stopped correction opening degree Kh, and proceed to step S16. When the stable opening degree Ka is not stored in the process S19, the process proceeds to the process S21, the current opening degree Kg of the electric hot / cold water mixing valve 8 is driven to the starting opening degree K1 + the corrected correction opening degree Kh, and the process proceeds to the process S15. .

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 remote controller 16 and the temperature of the mixed hot water mixed by the electric hot water mixing valve 8 have the same value. The opening degree of the electric hot / cold water mixing valve 8 at the time of detection is stored as a stable opening degree, and when the set value of the hot water temperature is changed by the remote controller 16 while hot water supply is stopped, the correction opening for the change of the hot water temperature is changed. Since the temperature is added to the current opening degree when the hot water is stopped, the hot water supply is started at the temperature after the change of the hot water temperature when the next hot water supply is started.

本発明の実施の形態１を示す給湯システムの構成図The block diagram of the hot-water supply system which shows Embodiment 1 of this invention 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The block diagram of the control circuit of the hot-water supply system which shows Embodiment 1 of this invention 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Flow chart of control operation of hot water supply system showing Embodiment 1 of the present invention 本発明の実施の形態２を示す給湯システムの制御動作のフローチャートFlowchart of control operation of hot water supply system showing Embodiment 2 of the present invention.

符号の説明Explanation of symbols

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. Hot water tank 2. Pressure reducing valve 3. Hot water tank 4. Heating element 5. Boiling hot water temperature sensor 6. Hot water tank water supply pipe Relief valve 8. Electric water / water mixing valve9. Hot water temperature sensor 10. Hot water pipe 11. Water temperature sensor 12. Mixed hot water pipe 13. Flow sensor 14. Mixed hot water temperature sensor 15. Control unit 16. Remote controller

Claims (2)

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、前記貯湯槽に貯えられた湯を供給する給湯管と、前記貯湯槽から前記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、前記給水管の水と前記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、前記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、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と、前記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、
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. 前記流量センサにて前記混合給湯管を流れる混合湯の停止を検出後、所定時間待機中に前記リモコンにて給湯湯温の設定値が変更された場合、変更前後の給湯湯温の差分から前記湯水混合弁の移動開度を算出し、その値を待機位置に上乗せさせた開度で前記湯水混合弁を待機させるように制御することを特徴とする請求項１記載の給湯システム。 After detecting the stop of the mixed hot water flowing through the mixed hot water pipe by the flow rate sensor, when the set value of the hot water temperature is changed by the remote controller while waiting for a predetermined time, the difference between the hot water temperature before and after the change is 2. The hot water supply system according to claim 1 , wherein the movement opening degree of the hot water / mixing valve is calculated, and the hot water / mixing valve is controlled to stand by at an opening degree obtained by adding the value to the standby position .
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