JP5163059B2 - Hot water system - Google Patents

Description

  The present invention relates to a hot water storage type hot water supply system that supplies hot water to hot water storage tanks.

  Some conventional hot water storage type hot water supply systems have a heat storage amount (hot water storage amount, boiling amount) set according to the day of the week (see, for example, Patent Document 1).

JP 2007-120817 A (Claim 1)

In such a hot water supply system, attention is paid to fluctuations in the amount of hot water supply due to the day of the week, but changes in the amount of hot water supply due to the season are not taken into consideration. For this reason, there is a concern that hot water runs out in the winter when there is a large amount of hot water supply, and there is a problem in that in the summer when there is little hot water supply, more hot water is boiled than necessary, resulting in wasted energy consumption.
The present invention has been made to solve the above-described problems. The first object is to store heat corresponding to the fluctuation of the amount of hot water supply according to the season, so that there is no fear of running out of hot water, and energy consumption is wasted. To get a hot water supply system without any.

The hot water supply system according to the present invention includes a hot water storage tank, a heat supply means for supplying heat into the hot water storage tank, a heat storage amount setting means for setting the amount of heat stored in the hot water storage tank by nighttime heat storage operation, and an actual value of the hot water supply heat quantity. And a control means for controlling the operation of the heat supply means so that the heat storage amount set by the heat storage amount setting means is stored in the hot water storage tank at a specific time. The setting means divides the year into four periods of spring, summer, autumn and winter based on the past actual value of the hot water supply heat quantity stored by the hot water supply heat quantity storage means, and sets the daily heat storage quantity for each period. A quantity setting means and a period determining means for determining a period corresponding to a day on which the stored heat quantity is consumed , and a hot water supply heat amount for one day in the i + 1 period one year before stored in the hot water supply heat quantity storage means , and the hot water supply heat of the day of the i-th period of this year, 1 year Using hot water heat of the day of the i-th period, to set the heat storage amount of the i + 1 period.

  The hot water supply system of the present invention has an effect that there is no fear of running out of hot water and there is no waste of energy consumption by storing heat corresponding to fluctuations in the amount of hot water supply according to the season.

Embodiment 1 FIG.
FIG. 1 shows a hot water supply system according to an embodiment of the present invention.
In the figure, the lower part of the hot water tank 1 and the heating unit 2 are connected by a piping line 5, and the upper part of the heating unit 2 and the hot water tank 1 is connected by a boiling return pipe 6. A hot water supply pipe 3 for supplying city water is connected to the lower part of the hot water tank 1, and a hot water supply pipe 4 for supplying hot water stored in the upper part of the hot water tank 1 to the outside is connected to the upper part of the hot water tank 1.
The hot water tank 1 is provided with a plurality of temperature sensors 7 a to 7 c at intervals in the height direction, and information of the temperature sensors 7 a to 7 c is sent to the heat storage amount calculation means 8. The heat storage amount calculation means 8 calculates the current heat storage amount inside the hot water tank 1 from the information of the temperature sensors 7 a to 7 c and sends it to the control means 10. A heat storage amount setting value from the heat storage amount setting means 9 is also sent to the control means 10, and the control means 10 controls the heating unit 2 based on the current heat storage amount value and the heat storage amount setting value. The heat storage amount setting means 9 includes a period-specific heat storage amount setting means 11 and a period determination means 12.
In such a hot water supply system, by operating the heating unit 2 during the night time when the electricity rate is low, the cold water in the lower part of the hot water tank 1 is heated and hot water is stored in the upper part of the hot water tank 1 (boiling operation). . And the hot water of the upper part of the hot water storage tank 1 is consumed through the hot water supply piping 4 at the time of daytime (hot-water supply operation | movement). The night boiling operation will be described with reference to the flowchart shown in FIG.
In step 101, the period-specific heat storage amount setting means 11 divides the year into four periods, that is, the heat storage amount setting value Qss corresponding to the spring, summer, autumn, and winter seasons as shown in FIG. It is set using a predetermined table.
In step 102, the period determining means 12 determines the corresponding season from the date in the daytime period following the boiling operation.
In step 103, the heat storage amount setting means 9 uses the set value of the heat storage amount for each season set by the period-specific heat storage amount setting means 11 and the season determined by the period determination means 12, and the target value for the current boiling operation The heat storage amount set value Qs is set.
In step 104, the operation of the heating means 2 is started.
In step 105, the control means 10 acquires the heat storage amount current value Qp from the heat storage amount calculation means 8.
In step 106, the heat storage amount present value Qp and the heat storage amount set value Qs are compared. If Qp ≧ Qs, the process proceeds to step 107, and otherwise, the process returns to step 105.
In step 107, the operation of the heating means 2 is stopped and the boiling operation is finished.

Since the boiling operation is performed in this way, the heat storage amount corresponding to the season is stored at the end of the boiling operation. Therefore, there is an effect that there is no worry about running out of hot water and there is no waste of energy consumption by storing heat corresponding to fluctuations in the amount of hot water supply according to the season.

Embodiment 2. FIG.
In the first embodiment described above, the set value of the heat storage amount corresponding to the season is set using a predetermined table. Next, an embodiment in which another method is used for setting will be described. Hereinafter, description of the same parts as those in the first embodiment will be omitted, and characteristic parts of this embodiment will be described.
FIG. 4 shows a hot water supply system according to the embodiment of the present invention. In addition to the configuration of the hot water supply system shown in FIG. 1, hot water supply heat amount calculation means 13 and hot water supply heat amount storage means 14 are provided. Further, the signal flow is such that the signal of the heat storage amount calculation means 8 is sent to the hot water supply heat amount calculation means 13, the signal of the hot water supply heat amount calculation means 13 is sent to the hot water supply heat amount storage means 14, and the signal of the hot water supply heat amount storage means 14 is the heat storage. It is sent to the quantity setting means 9.
In such a hot water supply system, as in Embodiment 1, a boiling operation is performed at night and a hot water supply operation is performed during the day. At the end of the boiling operation and at the start of the boiling operation after the subsequent hot water supply operation, the hot water supply heat amount calculation means 13 takes in the heat storage amount information of the hot water tank 1 from the heat storage amount calculation means 8. Then, a reduction amount of the heat storage amount obtained by subtracting the heat storage amount at the start of the next boiling operation from the heat storage amount at the end of the boiling operation is calculated as the hot water supply heat amount for one day of the hot water supply operation. The hot water supply heat storage means 14 stores the daily hot water supply heat calculated by the hot water supply heat calculation means 13 together with date information.
The period-specific heat storage amount setting means 11 included in the heat storage amount setting means 9 is a period obtained by dividing the hot water supply heat amount per day stored in the hot water supply heat amount storage means 14 into four based on the date information. That is, it classifies according to the seasons of spring, summer, autumn, and winter, and finds the average value of the amount of hot water supply per day for each season. And the table data which matched the season and the amount of heat storage as shown in FIG. 5 are created. The flow of creating table data is shown in FIG.

Then, when performing the night boiling operation, in the setting of the heat storage amount by period in step 101 of the flowchart shown in FIG. 2, the heat storage amount setting means by period 11 is table data created from the past hot water supply heat amount data. Is used.

In such a hot water supply system, the amount of heat storage is determined based on the past actual hot water supply heat amount every season, so the user learns the difference in hot water supply operation, does not worry about running out of hot water, and consumes energy. A hot water supply system with no waste is obtained.
Further, since the heat storage amount is determined using the average value of the past hot water supply heat amount for each season, the heat storage amount can be stably set even if the past results of the hot water supply heat amount vary.
Here, the average value of the past hot water supply heat amount for each season is used for the table data, but in addition to the average value, a value that considers variation is used, a certain amount of margin is added, and a coefficient that gives a margin is used. You may spend it.

Embodiment 3 FIG.
Next, another method of creating table data used in setting the heat storage amount by period in step 101 of FIG. 2 will be described.
In this embodiment, the configuration shown in FIG. 4 is used, and as in the second embodiment, the amount of hot water supply is calculated at the end of the night boiling operation and at the start of the boiling operation after the subsequent hot water supply operation. The means 13 takes in the heat storage amount information of the hot water tank 1 from the heat storage amount calculation means 8. Then, a reduction amount of the heat storage amount obtained by subtracting the heat storage amount at the start of the next boiling operation from the heat storage amount at the end of the boiling operation is calculated as the hot water supply heat amount for one day of the hot water supply operation. The hot water supply heat storage means 14 stores the daily hot water supply heat calculated by the hot water supply heat calculation means 13 together with date information.
The period-specific heat storage amount setting means 11 included in the heat storage amount setting means 9 classifies the hot water supply heat amount per day stored in the hot water supply heat amount storage means 14 for each year of the date based on the date information, and The period is divided into four periods, that is, spring, summer, autumn and winter seasons. Then, for each year, an average value of the amount of hot water supply per day for each season is obtained. Furthermore, the weighted average value of the amount of hot water supply per day is obtained for each season by multiplying by a coefficient by year. And the table data which matched the season and the amount of heat storage as shown in FIG. 5 are created. Specifically, the following formula is used.

そして、夜間の沸上動作を行う際に、図２に示すフローチャートの、工程１０１の期間別蓄熱量の設定において、期間別蓄熱量設定手段１１は、過去の給湯熱量のデータから作成したテーブルデータを使用する。
このような給湯システムでは、過去の給湯熱量の実績を学習する際に、年による係数の重み付けを変えることができるので、年による給湯熱量の変動の中から、より影響的な年を重視した学習ができ、湯切れの心配がなく、かつ、消費エネルギーの無駄のない給湯システムが得られる。
また、年による係数に、近年に対する係数ほど大きな値を用いているため、過去の給湯熱量の実績を反映させつつ、近年の生活スタイルの変化や気候の変動によるような、給湯熱量の変化に対応することができる。

実施の形態４．
図２の工程１０１の期間別蓄熱量の設定において使用するテーブルデータの別の作成方法を示す。
この実施の形態では、図４に示した構成を用い、実施の形態２と同様に、夜間の沸上動作の終了時と、その後の給湯動作の後の沸上動作の開始時に、給湯熱量算出手段１３は、貯湯槽１の蓄熱量情報を蓄熱量算出手段８から取り込む。そして、沸上動作終了時の蓄熱量から、次の沸上動作開始時の蓄熱量を差し引いた、蓄熱量の減少量を、給湯動作の１日の給湯熱量として算出する。給湯熱量記憶手段１４は、給湯熱量算出手段１３が算出した１日の給湯熱量を日付情報と共に記憶する。
蓄熱量設定手段９に含まれる期間別蓄熱量設定手段１１は、給湯熱量記憶手段１４に記憶された1日あたりの給湯熱量を、その日付情報に基づいて、日付の年毎に分類し、さらに、1年を４つに分割した期間、すなわち春、夏、秋、冬の季節によって分類する。そして、それぞれの年毎に、季節ごとの1日あたりの給湯熱量の平均値を求める。

給湯熱量記憶手段１４に、今年の第ｉ期間までの過去の給湯熱量の実績データが蓄えられているときに、第ｉ+1期間の蓄熱量を設定するときを考える。
期間別蓄熱量設定手段１１は、1年前の第ｉ+1期間のデータと、今年の第ｉ期間のデータと、１年前の第ｉ期間のデータを用いて、第ｉ+1期間の蓄熱量を設定する。例えば、１年前の第ｉ+1期間の実績の平均値に、第ｉ期間の１年前から今年への変化率を掛け合わせて、第ｉ+1期間の蓄熱量として設定する。具体的には、以下の式を用いる。

Then, when performing the night boiling operation, in the setting of the heat storage amount by period in step 101 of the flowchart shown in FIG. 2, the heat storage amount setting means by period 11 is table data created from the past hot water supply heat amount data. Is used.
In such a hot water supply system, the weighting of the coefficient depending on the year can be changed when learning past results of the hot water supply heat amount, so learning that focuses on the more influential year among the fluctuations in the hot water supply heat amount by year Thus, a hot water supply system can be obtained without worrying about running out of hot water and without wasting energy consumption.
In addition, since the coefficient for the year is as large as the coefficient for the recent years, it reflects the past actual hot water supply, and responds to changes in hot water supply due to recent lifestyle changes and climate changes. can do.

Embodiment 4 FIG.
The other preparation method of the table data used in the setting of the heat storage amount according to period of the process 101 of FIG. 2 is shown.
In this embodiment, the configuration shown in FIG. 4 is used, and as in the second embodiment, the amount of hot water supply is calculated at the end of the night boiling operation and at the start of the boiling operation after the subsequent hot water supply operation. The means 13 takes in the heat storage amount information of the hot water tank 1 from the heat storage amount calculation means 8. Then, a reduction amount of the heat storage amount obtained by subtracting the heat storage amount at the start of the next boiling operation from the heat storage amount at the end of the boiling operation is calculated as the hot water supply heat amount for one day of the hot water supply operation. The hot water supply heat storage means 14 stores the daily hot water supply heat calculated by the hot water supply heat calculation means 13 together with date information.
The period-specific heat storage amount setting means 11 included in the heat storage amount setting means 9 classifies the hot water supply heat amount per day stored in the hot water supply heat amount storage means 14 for each year of the date based on the date information, and The period is divided into four periods, that is, spring, summer, autumn and winter seasons. Then, for each year, an average value of the amount of hot water supply per day for each season is obtained.

Let us consider a case where the heat storage amount storage means 14 sets the heat storage amount for the (i + 1) -th period when past performance data for the past hot water supply until the i-th period of this year is stored.
The period-specific heat storage amount setting means 11 uses the data of the i + 1 period of the previous year, the data of the i period of the current year, and the data of the i period of the previous year, for the i + 1 period. Set the amount of heat storage. For example, the average value of the results of the (i + 1) -th period one year ago is multiplied by the rate of change from one year before the i-th period to this year to set the heat storage amount for the (i + 1) -th period. Specifically, the following formula is used.

このようにすることで、過去の給湯熱量の実績に、今年の過去からの変化を反映することができ、今年のデータのない期間についても、精度よく蓄熱量を設定できる。


実施の形態５．
上述の実施の形態では、期間について、1年を4つに分割した、春夏秋冬の四季として説明してきたが、期間の分割方法はこれに限るものではない。ユーザーの使用実態や、システムの設置場所により、四季ではなく二十四節季や、月単位・週単位に分割したり、季節に雨季、乾季、猛暑期、極寒期などを加えるなど、期間の分割方法にはさまざまな方法が考えられる。
次の実施の形態では、ユーザーの使用実態や、システムの設置場所に適した期間の分割方法を得る実施の形態を示す。
図７はこの発明の実施の形態における給湯システムを示すものである。図４に示した給湯システムの構成に加え、期間ルール入力手段１５が設けられている。期間ルール入力手段１５は、操作盤のタッチパネルやキーボードなど入力手段を持ち、1年を分割して期間を決めるルールを選択肢の中から選択したり、プログラミング言語などを用いてユーザーが独自のルールを入力することができるものである。期間ルール入力手段１５で入力されたルールは、蓄熱量設定手段９に送られる。そして、期間別蓄熱量設定手段１１が行うテーブルデータ作成の際や、期間判断手段１２が行う期間の判断の際に、期間ルール入力手段１５で入力されたルールが用いられる。
このように、ユーザーが入力したルールに従って蓄熱量が設定されるので、ユーザーの使用実態や、システムの設置場所に適した対応した蓄熱をすることができる。


実施の形態６．
図８は別の実施の形態における給湯システムを示すものである。
図において、貯湯槽１の下部と加熱ユニット２との間が沸上行き配管５で配管接続され、加熱ユニット２と貯湯槽1の上部の間が沸上戻り配管６で接続される。貯湯槽１の下部には市水を供給する給水配管３が、貯湯槽１の上部には貯湯槽１の上部に貯められた温水を外部に供給する給湯配管４が接続されている。
貯湯槽１には、高さ方向に間隔をおいて複数の温度センサ７ａ〜７ｃが設けられ、温度センサ７ａ〜７ｃの情報は蓄熱量算出手段８に送られる。蓄熱量算出手段８は温度センサ７ａ〜７ｃの情報から貯湯槽１の内部の蓄熱量現在値を算出し、制御手段１０へ送る。制御手段１０へは、蓄熱量設定手段９からの蓄熱量設定値も送られ、制御手段１０は、蓄熱量現在値と蓄熱量設定値を基に加熱ユニット２を制御する。なお、蓄熱量設定手段９には期間日特性別蓄熱量設定手段１６と期間判断手段１２、日特性判断手段１７が含まれている。
このような給湯システムでは、電力料金の安い夜間の時間帯に加熱ユニット２を運転することで、貯湯槽１の下部の冷水を加熱して貯湯槽１の上部に温水を蓄える（沸上動作）。そして、昼間の時間帯に、貯湯槽１の上部の温水を、給湯配管４を通じて消費する（給湯動作）。この夜間の沸上動作ついて、図９に示すフローチャートを用いて説明する。
工程２０１では、期間日特性別蓄熱量設定手段１６が、1年を４つに分割した期間、すなわち春、夏、秋、冬の季節と、日の特性、すなわち平日、休日の区別に対応した蓄熱量の設定値Ｑｓｓを、例えば図１０に示すような、予め決められたテーブルを用いて設定する。
工程２０２では、期間判断手段１２が、沸上動作に続く昼の時間帯の日付から、該当する季節を判断する。
工程２０３では、日特性判断手段１７が、沸上動作に続く昼の時間帯の日付から、該当する日特性を判断する。
工程２０４では、蓄熱量設定手段９が、期間日特性別蓄熱量設定手段１６が設定した季節と日特性ごとの蓄熱量の設定値と、期間判断手段１２が判断した季節と、日特性判断手段１７が判断した日特性から、今回の沸上動作の目標値である、蓄熱量設定値Ｑｓを設定する。
工程２０５において、加熱手段２の運転を開始する。
工程２０６で、制御手段１０は蓄熱量算出手段８から、蓄熱量現在値Ｑｐを取得する。
工程２０７では、蓄熱量現在値Ｑｐと蓄熱量設定値Ｑｓを比較し、Ｑｐ≧Ｑｓであれば、工程２０８に進み、それ以外は工程２０６へ戻る。
工程２０８で、加熱手段２の運転を停止して、沸上動作を終了する。

このようにして沸上動作を行うので、沸上動作終了時には、季節と日特性に応じた蓄熱量が蓄熱される。そのため、季節および日の特性による給湯熱量の変動に対応した蓄熱をすることで湯切れの心配がなく、かつ、消費エネルギーの無駄がないという効果がある。


実施の形態７．
以上の実施の形態６では、季節と日の特性に対応した蓄熱量の設定値を、予め決められたテーブルを用いて設定したものであるが、次に、別の方法で設定する実施の形態を示す。以下、実施の形態６と同様な部分は説明を省略し、この実施の形態の特徴的な部分を説明する。
図１１はこの発明の実施の形態における給湯システムを示すものである。図９に示した給湯システムの構成に加え、給湯熱量算出手段１３と給湯熱量記憶手段１４とが設けられている。また、信号の流れは、蓄熱量算出手段８の信号が給湯熱量算出手段１３へ送られ、給湯熱量算出手段１３の信号が給湯熱量記憶手段１４へ送られ、給湯熱量記憶手段１４の信号は蓄熱量設定手段９へと送られるようになっている。
このような給湯システムでは、実施の形態６と同様に、夜間に沸上動作を行い、昼間に給湯動作を行う。沸上動作の終了時と、その後の給湯動作の後の沸上動作の開始時に、給湯熱量算出手段１３は、貯湯槽１の蓄熱量情報を蓄熱量算出手段８から取り込む。そして、沸上動作終了時の蓄熱量から、次の沸上動作開始時の蓄熱量を差し引いた、蓄熱量の減少量を、給湯動作の１日の給湯熱量として算出する。給湯熱量記憶手段１４は、給湯熱量算出手段１３が算出した１日の給湯熱量を日付情報と共に記憶する。
蓄熱量設定手段９に含まれる期間別蓄熱量設定手段１１は、給湯熱量記憶手段１４に記憶された1日あたりの給湯熱量を、その日付情報に基づいて、1年を４つに分割した期間、すなわち春、夏、秋、冬の季節によって分類し、さらに、日特性、すなわち、平日、休日の別により分類する。そして、季節ごと日特性ごとに1日あたりの給湯熱量の平均値を求め、図１２に示すような、季節と日特性と蓄熱量とを対応させたテーブルデータを作成する。テーブルデータ作成のフローを図１３に示す。

そして、夜間の沸上動作を行う際に、図９に示すフローチャートの、工程２０１の期間別蓄熱量の設定において、期間日特性別蓄熱量設定手段１６は、過去の給湯熱量のデータから作成したテーブルデータを使用する。

このような給湯システムでは、過去の給湯熱量の季節および日特性ごとの実績を基に蓄熱量を決めるようにしているので、ユーザーによる給湯動作の違いを学習して、湯切れの心配がなく、かつ、消費エネルギーの無駄のない給湯システムが得られる。
また、過去の給湯熱量の季節および日特性ごとの平均値を使用して蓄熱量を決めるようにしているので、過去の給湯熱量の実績にばらつきがあったとしても安定して蓄熱量を設定できる。
なお、ここでは過去の給湯熱量の季節および日特性ごとの平均値をテーブルデータに使用したが、平均値に加えてばらつきも考慮した値を使用したり、一定の余裕量を加えたり、余裕を与える係数をかけてもよい。


実施の形態８．
上述の実施の形態では、日の特性について、平日、休日の別として説明してきたが、日の特性の分類方法はこれに限るものではない。ユーザーの使用実態や地域特性により、曜日ごとの区別や、毎月の第２土曜日とか毎月２５日といった特定の日を別扱いしたり、太陰暦をベースにしたり、日の特性の分類方法にはさまざまな方法が考えられる。
次の実施の形態では、ユーザーの使用実態や、システムの設置場所に適した期間の分割方法を得る実施の形態を示す。
図１４はこの発明の実施の形態における給湯システムを示すものである。図１１に示した給湯システムの構成に加え、期間ルール入力手段１５と日特性ルール入力手段１８が設けられている。期間ルール入力手段１５と日特性ルール入力手段１８は、操作盤のタッチパネルやキーボードなど入力手段を持ち、1年を分割して期間を決めるルールや日の特性の分類を決めるルールを選択肢の中から選択したり、プログラミング言語などを用いてユーザーが独自のルールを入力することができるものである。期間ルール入力手段１５と日特性ルール入力手段１８で入力されたルールは、蓄熱量設定手段９に送られる。そして、期間別蓄熱量設定手段１１が行うテーブルデータ作成の際や、期間判断手段１２および日特性判断手段１７が行う判断の際に、この入力されたルールが用いられる。
このように、ユーザーが入力したルールに従って蓄熱量が設定されるので、ユーザーの使用実態や、システムの設置場所に適した対応した蓄熱をすることができる。


実施の形態９．
上述の実施の形態では、季節に対応した蓄熱量の設定値を、予め決められたテーブルや学習で作成したテーブルを用いて設定したものであるが、次に、別の方法で設定する実施の形態を示す。
図１５はこの発明の実施の形態における給湯システムを示すものである。図１に示した給湯システムの構成に加え、蓄熱量設定値表示手段１９と蓄熱量設定値修正手段２０とが設けられている。蓄熱量設定値表示手段１９は、操作盤に設けられたディスプレーやメーターなどの表示装置、蓄熱量設定値修正手段２０はキーボードやダイヤルなどの入力装置からなっている。信号の流れは、蓄熱量設定手段９から蓄熱量設定値表示手段１９へと蓄熱量設定値信号が、蓄熱量設定値修正手段２０から蓄熱量設定手段９へと蓄熱量設定値修正信号が送られるようになっている。
このような給湯システムでは、蓄熱量設定値表示手段１９に現在の蓄熱量設定値が表示されている。ユーザーは表示を見て、必要に応じて、蓄熱量設定値修正手段２０を用いて、蓄熱量設定値の修正値を入力する。このとき、蓄熱量は単位がジュールで示されるような熱量でも、例えば４０℃の湯を何リットル供給できるかを示すような、供給可能湯量でもよい。
夜間の沸上動作ついて、図１６に示すフローチャートを用いて説明する。
工程３０１では、沸上動作開始前に蓄熱量設定値修正手段２０を用いた蓄熱量設定値の修正があったかどうかを判断する。あれば、工程３０２に進み、それ以外は工程３０３に進む。
工程３０２では、蓄熱量設定値Ｑｓを、蓄熱量設定値修正手段２０から入力された修正値に設定する。その後、工程３０６へ進む。
工程３０３では、期間別蓄熱量設定手段１１が、1年を４つに分割した期間、すなわち春、夏、秋、冬の季節に対応した蓄熱量の設定値Ｑｓｓを、例えば図３に示すような、予め決められたテーブルを用いて設定する。
工程３０４では、期間判断手段１２が、沸上動作に続く昼の時間帯の日付から、該当する季節を判断する。
工程３０５では、蓄熱量設定手段９が、期間別蓄熱量設定手段１１が設定した季節ごとの蓄熱量の設定値と、期間判断手段１２が判断した季節とから、今回の沸上動作の目標値である、蓄熱量設定値Ｑｓを設定する。
工程３０６において、加熱手段２の運転を開始する。
工程３０７では、沸上動作中に蓄熱量設定値修正手段２０を用いた蓄熱量設定値の修正があったかどうかを判断する。あれば、工程３０８に進み、それ以外は工程３０９に進む。
工程３０８では、蓄熱量設定値Ｑｓを、蓄熱量設定値修正手段２０から入力された修正値に変更する。その後、工程３０９へ進む。
工程３０９で、制御手段１０は蓄熱量算出手段８から、蓄熱量現在値Ｑｐを取得する。
工程３１０では、蓄熱量現在値Ｑｐと蓄熱量設定値Ｑｓを比較し、Ｑｐ≧Ｑｓであれば、工程３１１に進み、それ以外は工程３０９へ戻る。
工程３１１で、加熱手段２の運転を停止して、沸上動作を終了する。

このようにして沸上動作を行うので、蓄熱量設定値修正手段２０を用いた蓄熱量設定値の修正があれば、沸上動作終了時には、蓄熱量設定値修正手段２０より入力された蓄熱量設定値の修正値に等しい蓄熱量が蓄熱される。そのため、通常の季節による変動とは関係ない不規則的な給湯熱量が必要な場合には、ユーザーの入力により、蓄熱量を修正することで湯切れの心配がなく、かつ、消費エネルギーの無駄がないという効果がある。

By doing in this way, the past actual amount of hot water supply can reflect the change from the past this year, and the heat storage amount can be accurately set even during the period when there is no data for this year.


Embodiment 5 FIG.
In the above-described embodiment, the period has been described as four seasons of spring, summer, autumn and winter in which one year is divided into four, but the method of dividing the period is not limited to this. Depending on the actual usage of the user and the location of the system, the period may be divided into 24 seasons instead of the four seasons, monthly or weekly, or adding the rainy season, dry season, extreme heat season, extreme cold season, etc. to the season. Various methods can be considered.
In the following embodiment, an embodiment in which a method of dividing a period suitable for the actual usage of the user and the installation location of the system will be described.
FIG. 7 shows a hot water supply system according to the embodiment of the present invention. In addition to the configuration of the hot water supply system shown in FIG. 4, period rule input means 15 is provided. The period rule input means 15 has input means such as a touch panel of the operation panel and a keyboard, and selects a rule for determining the period by dividing one year from choices, or a user uses his / her programming language to set his own rules. It can be entered. The rule input by the period rule input unit 15 is sent to the heat storage amount setting unit 9. The rules input by the period rule input unit 15 are used when creating table data performed by the period-specific heat storage amount setting unit 11 or when determining the period performed by the period determination unit 12.
As described above, since the heat storage amount is set according to the rules input by the user, it is possible to perform heat storage corresponding to the actual usage of the user and the installation location of the system.


Embodiment 6 FIG.
FIG. 8 shows a hot water supply system according to another embodiment.
In the figure, the lower part of the hot water tank 1 and the heating unit 2 are connected by a piping line 5, and the upper part of the heating unit 2 and the hot water tank 1 is connected by a boiling return pipe 6. A hot water supply pipe 3 for supplying city water is connected to the lower part of the hot water tank 1, and a hot water supply pipe 4 for supplying hot water stored in the upper part of the hot water tank 1 to the outside is connected to the upper part of the hot water tank 1.
The hot water tank 1 is provided with a plurality of temperature sensors 7 a to 7 c at intervals in the height direction, and information of the temperature sensors 7 a to 7 c is sent to the heat storage amount calculation means 8. The heat storage amount calculation means 8 calculates the current heat storage amount inside the hot water tank 1 from the information of the temperature sensors 7 a to 7 c and sends it to the control means 10. A heat storage amount setting value from the heat storage amount setting means 9 is also sent to the control means 10, and the control means 10 controls the heating unit 2 based on the current heat storage amount value and the heat storage amount setting value. The heat storage amount setting means 9 includes a period-day characteristic-specific heat storage amount setting means 16, a period determination means 12, and a day characteristic determination means 17.
In such a hot water supply system, by operating the heating unit 2 during the night time when the electricity rate is low, the cold water in the lower part of the hot water tank 1 is heated and hot water is stored in the upper part of the hot water tank 1 (boiling operation). . And the hot water of the upper part of the hot water storage tank 1 is consumed through the hot water supply piping 4 at the time of daytime (hot-water supply operation | movement). The night boiling operation will be described with reference to the flowchart shown in FIG.
In step 201, the heat storage amount setting means 16 according to the period / day characteristics corresponds to the period divided into four years, that is, the seasons of spring, summer, autumn, and winter, and the characteristics of days, that is, weekdays and holidays. The set value Qss of the heat storage amount is set using a predetermined table as shown in FIG. 10, for example.
In step 202, the period determination means 12 determines a corresponding season from the date in the daytime period following the boiling operation.
In step 203, the day characteristic determining means 17 determines the corresponding day characteristic from the date in the daytime time zone following the boiling operation.
In step 204, the heat storage amount setting means 9 determines the season set by the period-day characteristic heat storage amount setting means 16 and the set value of the heat storage amount for each day characteristic, the season determined by the period determination means 12, and the day characteristic determination means. Based on the day characteristics determined by 17, the heat storage amount setting value Qs, which is the target value for the current boiling operation, is set.
In step 205, operation of the heating means 2 is started.
In step 206, the control means 10 acquires the heat storage amount current value Qp from the heat storage amount calculation means 8.
In step 207, the heat storage amount present value Qp and the heat storage amount set value Qs are compared. If Qp ≧ Qs, the process proceeds to step 208, and otherwise, the process returns to step 206.
In step 208, the operation of the heating means 2 is stopped and the boiling operation is finished.

Since the boiling operation is performed in this way, at the end of the boiling operation, a heat storage amount corresponding to the season and day characteristics is stored. Therefore, there is an effect that there is no worry about running out of hot water and there is no waste of energy consumption by storing heat corresponding to fluctuations in the amount of hot water supply due to the characteristics of the season and day.


Embodiment 7 FIG.
In the above sixth embodiment, the set value of the heat storage amount corresponding to the characteristics of the season and the day is set using a predetermined table. Next, an embodiment in which another method is set. Indicates. Hereinafter, description of the same parts as those in the sixth embodiment will be omitted, and characteristic parts of this embodiment will be described.
FIG. 11 shows a hot water supply system according to the embodiment of the present invention. In addition to the configuration of the hot water supply system shown in FIG. 9, hot water supply heat amount calculation means 13 and hot water supply heat amount storage means 14 are provided. Further, the signal flow is such that the signal of the heat storage amount calculation means 8 is sent to the hot water supply heat amount calculation means 13, the signal of the hot water supply heat amount calculation means 13 is sent to the hot water supply heat amount storage means 14, and the signal of the hot water supply heat amount storage means 14 is the heat storage. It is sent to the quantity setting means 9.
In such a hot water supply system, as in the sixth embodiment, a boiling operation is performed at night and a hot water supply operation is performed during the day. At the end of the boiling operation and at the start of the boiling operation after the subsequent hot water supply operation, the hot water supply heat amount calculation means 13 takes in the heat storage amount information of the hot water tank 1 from the heat storage amount calculation means 8. Then, a reduction amount of the heat storage amount obtained by subtracting the heat storage amount at the start of the next boiling operation from the heat storage amount at the end of the boiling operation is calculated as the hot water supply heat amount for one day of the hot water supply operation. The hot water supply heat storage means 14 stores the daily hot water supply heat calculated by the hot water supply heat calculation means 13 together with date information.
The period-specific heat storage amount setting means 11 included in the heat storage amount setting means 9 is a period obtained by dividing the hot water supply heat amount per day stored in the hot water supply heat amount storage means 14 into four based on the date information. That is, they are classified according to the seasons of spring, summer, autumn, and winter, and further classified according to the day characteristics, that is, weekdays and holidays. Then, an average value of the hot water supply heat amount per day is obtained for each season and each day characteristic, and table data associating the season, the day characteristic and the heat storage amount as shown in FIG. 12 is created. The flow of creating table data is shown in FIG.

Then, when performing the boiling operation at night, in the setting of the heat storage amount by period in the step 201 of the flowchart shown in FIG. 9, the heat storage amount setting means 16 by period date characteristic is created from the data of the past hot water supply heat amount. Use table data.

In such a hot water supply system, the amount of heat storage is determined based on the past seasonal and daily characteristics of the hot water supply heat amount, so learning the difference in hot water supply operation by the user, there is no worry of running out of hot water, In addition, a hot water supply system without waste of energy consumption can be obtained.
In addition, since the heat storage amount is determined by using the average value of the past hot water supply calorie season and daily characteristics, even if there is a variation in the past hot water supply heat amount, the heat storage amount can be set stably. .
In this example, the average value of the past hot water supply calorific value for each season and day was used for the table data.However, in addition to the average value, a value that takes into account variations, a certain margin amount, You may multiply the given coefficient.


Embodiment 8 FIG.
In the above-described embodiment, the day characteristics have been described as separate weekdays and holidays, but the day characteristics classification method is not limited to this. Depending on the user's actual usage and regional characteristics, there are various methods for classifying the characteristics of the day, such as the distinction by day of the week, the special day such as the second Saturday of each month or the 25th of every month, the lunar calendar, etc. A method is conceivable.
In the following embodiment, an embodiment in which a method of dividing a period suitable for the actual usage of the user and the installation location of the system will be described.
FIG. 14 shows a hot water supply system according to the embodiment of the present invention. In addition to the configuration of the hot water supply system shown in FIG. 11, a period rule input means 15 and a day characteristic rule input means 18 are provided. The period rule input means 15 and the day characteristic rule input means 18 have input means such as an operation panel touch panel and a keyboard, and a rule for determining a period by dividing a year and a rule for determining a characteristic of a day are selected from options. Users can select or enter their own rules using programming languages. The rules input by the period rule input unit 15 and the day characteristic rule input unit 18 are sent to the heat storage amount setting unit 9. The input rule is used when the table data is created by the period-specific heat storage amount setting means 11 or when the period judgment means 12 and the day characteristic judgment means 17 are judged.
As described above, since the heat storage amount is set according to the rules input by the user, it is possible to perform heat storage corresponding to the actual usage of the user and the installation location of the system.


Embodiment 9 FIG.
In the above-described embodiment, the set value of the heat storage amount corresponding to the season is set using a predetermined table or a table created by learning. Next, another method is used for setting. The form is shown.
FIG. 15 shows a hot water supply system according to the embodiment of the present invention. In addition to the configuration of the hot water supply system shown in FIG. 1, a heat storage amount set value display means 19 and a heat storage amount set value correction means 20 are provided. The heat storage amount set value display means 19 includes a display device such as a display and a meter provided on the operation panel, and the heat storage amount set value correction means 20 includes an input device such as a keyboard and a dial. The flow of the signal is that a heat storage amount setting value signal is transmitted from the heat storage amount setting means 9 to the heat storage amount setting value display means 19, and a heat storage amount setting value correction signal is transmitted from the heat storage amount setting value correction means 20 to the heat storage amount setting means 9. It is supposed to be.
In such a hot water supply system, the current heat storage amount setting value is displayed on the heat storage amount setting value display means 19. The user looks at the display and inputs the correction value of the heat storage amount setting value using the heat storage amount setting value correction means 20 as necessary. At this time, the amount of stored heat may be the amount of heat shown in joules or the amount of hot water that can be supplied, for example, indicating how many liters of hot water at 40 ° C. can be supplied.
The night boiling operation will be described with reference to the flowchart shown in FIG.
In step 301, it is determined whether or not the heat storage amount setting value has been corrected using the heat storage amount setting value correcting means 20 before the boiling operation is started. If there is, the process proceeds to Step 302, and otherwise proceeds to Step 303.
In step 302, the heat storage amount setting value Qs is set to the correction value input from the heat storage amount setting value correction means 20. Thereafter, the process proceeds to step 306.
In step 303, the period-specific heat storage amount setting means 11 divides the year into four periods, that is, the heat storage amount setting value Qss corresponding to the spring, summer, autumn, and winter seasons, for example, as shown in FIG. It is set using a predetermined table.
In step 304, the period determination means 12 determines the corresponding season from the date in the daytime period following the boiling operation.
In step 305, the heat storage amount setting means 9 uses the set value of the heat storage amount for each season set by the period-specific heat storage amount setting means 11 and the season determined by the period determination means 12, and the target value for the current boiling operation. The heat storage amount set value Qs is set.
In step 306, the operation of the heating means 2 is started.
In step 307, it is determined whether or not the heat storage amount setting value has been corrected using the heat storage amount setting value correcting means 20 during the boiling operation. If there is, proceed to Step 308, otherwise proceed to Step 309.
In step 308, the heat storage amount setting value Qs is changed to a correction value input from the heat storage amount setting value correction means 20. Thereafter, the process proceeds to step 309.
In step 309, the control unit 10 acquires the current heat storage amount value Qp from the heat storage amount calculation unit 8.
In step 310, the heat storage amount present value Qp and the heat storage amount set value Qs are compared. If Qp ≧ Qs, the process proceeds to step 311; otherwise, the process returns to step 309.
In step 311, the operation of the heating means 2 is stopped and the boiling operation is finished.

Since the boiling operation is performed in this manner, if there is a correction of the heat storage amount setting value using the heat storage amount setting value correcting means 20, the heat storage amount input from the heat storage amount setting value correcting means 20 at the end of the boiling operation. A heat storage amount equal to the set value correction value is stored. For this reason, when an irregular amount of hot water supply that is not related to fluctuations due to the normal season is required, there is no worry of running out of hot water by correcting the heat storage amount by user input, and energy consumption is wasted. There is no effect.

  In the description of the embodiment, the heating unit is provided outside the sealed type hot water storage tank, but the present invention is also applied to a hot water supply system using an open type hot water storage tank and a hot water supply system provided with heating means inside the hot water storage tank. The invention can be applied.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic of the hot water supply system which shows Embodiment 1 of this invention. It is a flowchart which shows the boiling-up operation | movement of Embodiment 1 of this invention. Table data used in the first embodiment of the present invention It is the schematic of the hot water supply system which shows Embodiment 2, 3, 4 of this invention. Table data used in the second, third, and fourth embodiments of the present invention It is a flowchart which shows the learning operation | movement of Embodiment 2 of this invention. It is the schematic of the hot water supply system which shows Embodiment 5 of this invention. It is the schematic of the hot water supply system which shows Embodiment 6 of this invention. It is a flowchart which shows the boiling-up operation | movement of Embodiment 6 of this invention. Table data used in the sixth embodiment of the present invention It is the schematic of the hot water supply system which shows Embodiment 7 of this invention. Table data used in the seventh embodiment of the present invention It is a flowchart which shows the learning operation | movement of Embodiment 7 of this invention. It is the schematic of the hot water supply system which shows Embodiment 8 of this invention. It is the schematic of the hot water supply system which shows Embodiment 9 of this invention. It is a flowchart which shows the boiling operation of Embodiment 9 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hot water storage tank 2 Heating unit 3 Water supply piping 4 Hot water supply piping 5 Boiling-up piping 6 Boiling return piping 7a-7c Temperature sensor 8 Heat storage amount calculation means 9 Heat storage amount setting means 10 Control means 11 Periodical heat storage amount setting means 12 Period determination Means 13 Hot water supply heat amount calculation means 14 Hot water supply heat quantity storage means 15 Period rule input means 16 Period day characteristic-specific heat storage amount setting means 17 Date characteristic determination means 18 Date characteristic rule input means 19 Heat storage amount set value display means 20 Heat storage amount set value correction means

Claims (9)

A hot water tank,
A heat supply means for supplying heat into the hot water tank;
Heat storage amount setting means for setting the amount of heat stored in the hot water storage tank by nighttime heat storage operation;
Hot water supply heat amount storage means for storing the actual value of the hot water supply heat amount;
Control means for controlling the operation of the heat supply means so that the heat storage amount set by the heat storage amount setting means is stored in the hot water storage tank at a specific time,
The heat storage amount setting means includes
Based on the past actual value of the hot water supply heat amount stored by the hot water supply heat amount storage means, the heat storage amount setting means by period for dividing the year into four periods of spring, summer, autumn and winter and setting the heat storage amount for one day for each period; ,
A period determining means for determining a period corresponding to a day on which the amount of stored heat is consumed,
And hot-water supply heat of the day of the i + 1 period of one year before the hot water supply heat storage means has stored, and the hot water supply heat of the day of the i-th period of the year, the hot water supply heat of the day of the i-th period of one year ago A hot water supply system using the heat storage amount for the (i + 1) -th period. 2. The hot water supply system according to claim 1, wherein the heat storage amount is set based on an average value of a past actual value of the daily hot water supply heat amount for each period obtained by dividing one year into a plurality of periods. The average value of the past actual value of the daily hot water heat amount over multiple years is calculated for each period divided into multiple years for each year, and these are weighted average values for each period multiplied by a coefficient for each year. The hot water supply system according to claim 1, wherein the heat storage amount is set based on The hot water supply system according to claim 3, wherein the weighting is increased as the recent value increases. It has a day period rule input means,
5. The period-specific heat storage amount setting unit and the period determination unit determine a period corresponding to a day according to a rule input by a period rule input unit. Hot water system The hot water supply system according to claim 1, wherein the heat storage amount setting unit includes a day characteristic determination unit that determines a characteristic of a day corresponding to a day on which the stored heat amount is consumed. The hot water supply according to claim 6, wherein the heat storage amount is set based on an average value for each day characteristic for each period obtained by dividing one year into a plurality of past actual values of the daily hot water supply heat amount. system It has a daily characteristic rule input means,
7. The daily characteristic-specific heat storage amount setting means, the period-day characteristic-specific heat storage amount setting means, and the daily characteristic determination means determine a daily characteristic according to a rule input by a daily characteristic rule input means. Or the hot-water supply system of Claim 7 It has a set heat storage amount display means for displaying the heat storage amount set by the heat storage amount setting means and a heat storage amount correction input means, and the heat storage amount setting means newly sets the value corrected by the heat storage amount correction input means as the heat storage amount A hot water supply system according to any one of claims 1 to 8, wherein

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