JP7142216B2

JP7142216B2 - Water heater and hot water system

Info

Publication number: JP7142216B2
Application number: JP2018108334A
Authority: JP
Inventors: 裕史柴田; 和雄内谷; 朋洋長尾; 哲也中島
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2018-06-06
Filing date: 2018-06-06
Publication date: 2022-09-27
Anticipated expiration: 2038-06-06
Also published as: JP2019211159A

Description

本発明は、通信網で接続されたコントローラからの電力使用指示に基づいて昼間時間帯に沸き上げ運転を実行する給湯装置、及びコントローラと給湯装置とを有する給湯システムに関する。 TECHNICAL FIELD The present invention relates to a hot water supply system that performs a water heating operation during daytime based on an electric power usage instruction from a controller connected via a communication network, and a hot water supply system that includes the controller and the hot water supply apparatus.

多くの給湯装置は、貯湯タンク内の温水の加熱を夜間に沸き上げているが、太陽光発電を利用する場合には、昼間に沸き上げ時間をシフトすることで、太陽光による余剰電力を利用することができる。
しかし太陽光発電は、天候によって発電量が大きく変動するため、特許文献１では、天候の悪化等により実際のＰＶ発電量が気象情報から予測された予測値よりも低い場合には、昼間目標沸き上げ温度を制御手段により設定された前日の設定値よりも低い温度、即ち、給湯負荷に応じて要求される沸き上げ温度よりも低い温度に変更する給湯装置を開示している。
ところで近年では、点在する小規模な再生エネルギー発電や蓄電池、燃料電池、給湯装置などの設備と、電力の需要を管理するネットワークシステムをまとめて制御する分散型エネルギーシステム（ＶＰＰ）の構築が進められている。
分散型エネルギーシステムでは、負荷の平準化を図るために、コントローラで需要と供給とのバランスを保つ必要がある。
給湯装置は、昼間沸き上げ運転開始時刻での沸き上げ予測電力量を算出し、コントローラは、この沸き上げ予測電力量を給湯装置から受信し、翌日に予定している余剰電力量でまかなえるか否かを判断する。
給湯装置で算出した昼間沸き上げ運転開始時刻での沸き上げ予測電力量が、翌日に予定している余剰電力量を下回る場合には、コントローラは給湯装置に対して昼間沸き上げ運転開始時刻を送信することで、給湯装置は昼間沸き上げ運転を行うことができる。 Many water heaters heat the hot water in the hot water storage tank at night, but in the case of using solar power generation, the heating time is shifted to the daytime to use the surplus power generated by the sunlight. can do.
However, since the amount of power generated by photovoltaic power generation fluctuates greatly depending on the weather, in Patent Document 1, if the actual amount of PV power generation is lower than the predicted value predicted from weather information due to worsening weather, etc., the daytime target boiling Disclosed is a hot water supply apparatus that changes the raising temperature to a temperature lower than the previous day's set value set by a control means, that is, to a temperature lower than the boiling temperature required according to the hot water supply load.
By the way, in recent years, progress has been made in the construction of distributed energy systems (VPP) that collectively control scattered small-scale renewable energy power generation, storage batteries, fuel cells, water heaters, and other facilities, as well as network systems that manage power demand. It is
In a distributed energy system, a controller needs to balance supply and demand in order to level the load.
The water heater calculates the predicted heating power amount at the start time of the daytime heating operation, and the controller receives the predicted heating power amount from the water heater and determines whether the surplus power amount scheduled for the next day can be covered. to judge whether
If the estimated amount of electric power to be heated at the daytime heating operation start time calculated by the water heater is less than the surplus electric power amount scheduled for the next day, the controller transmits the daytime heating operation start time to the water heater. By doing so, the hot water supply apparatus can perform the daytime boiling operation.

特開２０１５－２１８９６７号公報JP 2015-218967 A

しかし、給湯装置で算出した昼間沸き上げ運転開始時刻での沸き上げ予測電力量が、翌日に予定している余剰電力量を超えた場合には、給湯装置での昼間沸き上げ運転を許可することはできないが、翌日に予定している余剰電力量を上回らない範囲で余剰電力を利用することが好ましい。 However, if the estimated amount of electric power to be heated at the start time of the daytime heating operation calculated by the water heater exceeds the surplus amount of electric power scheduled for the next day, the daytime heating operation of the water heater is permitted. However, it is preferable to use the surplus power within a range that does not exceed the amount of surplus power planned for the next day.

そこで本発明は、翌日に予定している余剰電力量が沸き上げ予測電力量に満たない場合にも、余剰電力を温水の加熱に用いることができるとともに必要な湯量を確保することができる給湯装置を提供することを目的とする。 Therefore, the present invention provides a water heater capable of using the surplus electric power for heating hot water and securing the necessary amount of hot water even when the surplus electric power scheduled for the next day is less than the predicted boiling electric amount. intended to provide

請求項１記載の本発明の給湯装置は、昼間時間帯における電力使用指示を行うコントローラ６３と通信網６２で接続され、前記コントローラ６３からの前記電力使用指示に基づいて前記昼間時間帯に沸き上げ運転を実行する給湯装置であって、貯湯タンク１０と、前記貯湯タンク１０内の湯水を加熱する加熱装置２０と、前記加熱装置２０が前記貯湯タンク１０内の前記湯水を加熱する前記沸き上げ運転の運転動作を制御する制御装置３０と、を備え、前記制御装置３０は、記憶された使用湯量履歴によって、沸き上げ運転開始時刻と沸き上げ運転時間とを算出して沸き上げ運転モード３４を設定し、前記沸き上げ運転モード３４として、前記昼間時間帯に前記沸き上げ運転を実行する昼間時間帯モード３４Ａと、深夜時間帯に前記沸き上げ運転を実行する深夜時間帯モード３４Ｂとを有し、少なくとも前記昼間時間帯での昼間沸き上げ運転開始時刻と、前記昼間沸き上げ運転開始時刻における沸き上げ予測電力量と、前記昼間沸き上げ運転開始時刻における時間当たりの消費電力量とを前記昼間時間帯モード３４Ａとして算出するとともに、前記昼間沸き上げ運転開始時刻と前記沸き上げ予測電力量と前記時間当たりの消費電力量とを前記コントローラ６３に送信し、前記コントローラ６３において、受信した前記昼間沸き上げ運転開始時刻と前記昼間沸き上げ運転開始時刻における前記沸き上げ予測電力量と前記昼間沸き上げ運転開始時刻における前記時間当たりの消費電力量とから、前記昼間時間帯モード３４Ａでの前記沸き上げ運転を許容できると判断した場合には、昼間沸き上げ運転開始指示時刻を前記電力使用指示として受信し、前記コントローラ６３において、受信した前記昼間沸き上げ運転開始時刻と前記昼間沸き上げ運転開始時刻における前記沸き上げ予測電力量と前記昼間沸き上げ運転開始時刻における前記時間当たりの消費電力量とから、前記昼間時間帯モード３４Ａでの前記沸き上げ運転を許容できないと判断した場合には、前記昼間沸き上げ運転開始指示時刻と許容できる昼間沸き上げ運転指示時間、または、前記昼間沸き上げ運転開始指示時刻と許容できる昼間沸き上げ予測電力量を前記電力使用指示として受信し、使用者が前記電力使用指示に基づく前記沸き上げ運転をしないことを設定している場合には、前記昼間時間帯モード３４Ａを解除して前記深夜時間帯モード３４Ｂで前記沸き上げ運転を行い、前記コントローラ６３から前記昼間時間帯モード３４Ａでの前記沸き上げ運転を許容できると判断した場合の前記電力使用指示を受信したときには、前記昼間時間帯モード３４Ａでは、前記昼間沸き上げ運転開始指示時刻で前記沸き上げ運転を開始し、記憶されている前記昼間沸き上げ運転時間だけ前記沸き上げ運転を実行し、前記深夜時間帯モード３４Ｂでは、前記昼間時間帯モード３４Ａで沸き上げた湯量を除いた深夜沸き上げ湯量を沸き上げるように深夜沸き上げ運転開始時刻を遅らせて前記沸き上げ運転を実行し、前記コントローラ６３から前記昼間時間帯モード３４Ａでの前記沸き上げ運転を許容できないと判断した場合の前記電力使用指示を受信したときには、前記昼間時間帯モード３４Ａでは、前記昼間沸き上げ運転開始指示時刻で前記沸き上げ運転を開始し、前記昼間沸き上げ運転指示時間だけ前記沸き上げ運転を実行し、前記深夜時間帯モード３４Ｂでは、前記昼間時間帯モード３４Ａにおける前記沸き上げ運転の不足電力量を加えて算出した前記深夜沸き上げ運転開始時刻で前記沸き上げ運転を実行することで、前記沸き上げ予測電力量に対する余剰電力量の不足電力量を、前記深夜時間帯で前記沸き上げ運転にて消費させることを特徴とする．
請求項２記載の本発明の給湯システムは、昼間時間帯における電力使用指示を行うコントローラ６３と、前記コントローラ６３と通信網で接続され、前記コントローラ６３からの前記電力使用指示に基づいて前記昼間時間帯に沸き上げ運転を実行する給湯装置とを有する給湯システムであって、前記給湯装置は、貯湯タンク１０と、前記貯湯タンク１０内の湯水を加熱する加熱装置２０と、前記加熱装置２０が前記貯湯タンク１０内の前記湯水を加熱する前記沸き上げ運転の運転動作を制御する制御装置３０と、を備え、前記制御装置３０は、記憶された使用湯量履歴によって、沸き上げ運転開始時刻と沸き上げ運転時間とを算出して沸き上げ運転モード３４を設定し、前記沸き上げ運転モード３４として、前記昼間時間帯に前記沸き上げ運転を実行する昼間時間帯モード３４Ａと、深夜時間帯に前記沸き上げ運転を実行する深夜時間帯モード３４Ｂとを有し、少なくとも前記昼間時間帯での昼間沸き上げ運転開始時刻と、前記昼間沸き上げ運転開始時刻における沸き上げ予測電力量と、前記昼間沸き上げ運転開始時刻における時間当たりの消費電力量とを前記昼間時間帯モード３４Ａとして算出するとともに、前記昼間沸き上げ運転開始時刻と前記沸き上げ予測電力量と前記時間当たりの消費電力量とを前記コントローラ６３に送信し、前記コントローラ６３は、余剰電力量を算出するとともに、前記沸き上げ予測電力量が前記余剰電力量より大きいか否かを判断し、前記制御装置３０では、前記コントローラ６３において、受信した前記昼間沸き上げ運転開始時刻と前記昼間沸き上げ運転開始時刻における前記沸き上げ予測電力量と前記昼間沸き上げ運転開始時刻における前記時間当たりの消費電力量とから、前記昼間時間帯モード３４Ａでの前記沸き上げ運転を許容できると判断した場合には、昼間沸き上げ運転開始指示時刻を前記電力使用指示として受信し、前記コントローラ６３において、受信した前記昼間沸き上げ運転開始時刻と前記昼間沸き上げ運転開始時刻における前記沸き上げ予測電力量と前記昼間沸き上げ運転開始時刻における前記時間当たりの消費電力量とから、前記昼間時間帯モード３４Ａでの前記沸き上げ運転を許容できないと判断した場合には、前記昼間沸き上げ運転開始指示時刻と許容できる昼間沸き上げ運転指示時間、または、前記昼間沸き上げ運転開始指示時刻と許容できる昼間沸き上げ予測電力量を前記電力使用指示として受信し、前記制御装置３０は、使用者が前記電力使用指示に基づく前記沸き上げ運転をしないことを設定している場合には、前記昼間時間帯モード３４Ａを解除して前記深夜時間帯モード３４Ｂで前記沸き上げ運転を行い、前記コントローラ６３から前記昼間時間帯モード３４Ａでの前記沸き上げ運転を許容できると判断した場合の前記電力使用指示を受信したときには、前記昼間時間帯モード３４Ａでは、前記昼間沸き上げ運転開始指示時刻で前記沸き上げ運転を開始し、記憶されている前記昼間沸き上げ運転時間だけ前記沸き上げ運転を実行し、前記深夜時間帯モード３４Ｂでは、前記昼間時間帯モード３４Ａで沸き上げた湯量を除いた深夜沸き上げ湯量を沸き上げるように深夜沸き上げ運転開始時刻を遅らせて前記沸き上げ運転を実行し、前記コントローラ６３から前記昼間時間帯モード３４Ａでの前記沸き上げ運転を許容できないと判断した場合の前記電力使用指示を受信したときには、前記昼間時間帯モード３４Ａでは、前記昼間沸き上げ運転開始指示時刻で前記沸き上げ運転を開始し、前記昼間沸き上げ運転指示時間だけ前記沸き上げ運転を実行し、前記深夜時間帯モード３４Ｂでは、前記昼間時間帯モード３４Ａにおける前記沸き上げ運転の不足電力量を加えて算出した前記深夜沸き上げ運転開始時刻で前記沸き上げ運転を実行することで、前記沸き上げ予測電力量に対する前記余剰電力量の不足電力量を、前記深夜時間帯で前記沸き上げ運転にて消費させることを特徴とする。
請求項３記載の本発明は、請求項１に記載の給湯装置において、前記加熱装置２０を、ヒートポンプ装置としたことを特徴とする。 The hot water supply apparatus of the present invention according to claim 1 is connected to a controller 63 that issues power usage instructions during the daytime hours via a communication network 62, and heats water during the daytime hours based on the power usage instructions from the controller 63. A hot water supply apparatus executing an operation, comprising a hot water storage tank 10, a heating device 20 for heating the hot water in the hot water storage tank 10, and the boiling operation in which the heating device 20 heats the hot water in the hot water storage tank 10. The controller 30 calculates the boiling operation start time and the boiling operation time based on the stored history of the amount of hot water used, and sets the boiling operation mode 34. and, as the boiling operation mode 34, a daytime time period mode 34A in which the boiling operation is performed in the daytime time period and a late night time period mode 34B in which the boiling operation is performed in the late night time period, At least the daytime heating operation start time in the daytime time zone, the predicted heating power amount at the daytime heating operation start time, and the power consumption per hour at the daytime heating operation start time are calculated in the daytime time zone. In addition to calculating as mode 34A, the daytime heating operation start time, the predicted heating power amount, and the power consumption per hour are transmitted to the controller 63, and the controller 63 receives the daytime heating operation The water heating operation in the daytime mode 34A is permitted based on the start time, the predicted water heating power amount at the daytime water heating operation start time, and the power consumption per hour at the daytime water heating operation start time. When it is determined that it is possible, the daytime water heating operation start instruction time is received as the electric power usage instruction, and the controller 63 performs the water heating at the received daytime water heating operation start time and the daytime water heating operation start time. When it is determined that the water heating operation in the daytime mode 34A is not permissible based on the predicted power amount and the power consumption per hour at the daytime water heating operation start time, the daytime water heating operation is started. The instruction time and the permissible daytime heating operation instruction time, or the daytime heating operation start instruction time and the permissible daytime heating predicted power amount are received as the power usage instruction, and the user performs the above operation based on the power usage instruction. When it is set not to perform the boiling operation, the daytime mode 34A is canceled and the boiling is performed in the late-night time mode 34B. When the electric power usage instruction is received from the controller 63 when it is determined that the water heating operation in the daytime mode 34A is permissible, the daytime water heating is performed in the daytime mode 34A. The water heating operation is started at the operation start instruction time, the water heating operation is executed for the stored daytime water heating operation time, and in the late night time mode 34B, water is boiled in the daytime time mode 34A. The late-night boiling operation start time is delayed so as to boil the amount of hot water to be boiled at midnight excluding the amount of hot water, and the boiling operation is executed, and the controller 63 determines that the boiling operation in the daytime mode 34A is not permitted. When the electric power use instruction is received in the case of determination, in the daytime mode 34A, the water heating operation is started at the daytime water heating operation start instruction time, and the water heating operation is performed for the daytime water heating operation instruction time. , and in the late-night time zone mode 34B, the boiling operation is performed at the late-night heating operation start time calculated by adding the power shortage for the heating operation in the daytime time zone mode 34A, It is characterized in that the electric power shortage of the surplus electric power amount with respect to the predicted electric power amount for boiling is consumed in the heating operation during the late-night hours.
The hot water supply system of the present invention according to claim 2 is a controller 63 that issues power usage instructions during daytime hours, and is connected to said controller 63 via a communication network. A hot water supply system including a hot water supply device that performs a boiling operation in a belt, the hot water supply device including a hot water storage tank 10, a heating device 20 that heats the hot water in the hot water storage tank 10, and the heating device 20 a control device 30 for controlling the operation of the boiling operation for heating the hot water in the hot water storage tank 10, and the control device 30 determines the start time of the boiling operation and the boiling operation based on the stored hot water amount history. The boiling operation mode 34 is set by calculating the operation time and the operation time, and the boiling operation mode 34 is a daytime time period mode 34A in which the boiling operation is performed in the daytime time period and the boiling operation in the late night time period. and a late-night time period mode 34B for executing operation, at least the daytime heating operation start time in the daytime period, the predicted electric power amount to be heated at the daytime heating operation start time, and the daytime heating operation start time. The power consumption per hour at the time is calculated as the daytime mode 34A, and the daytime heating operation start time, the predicted heating power amount, and the power consumption per hour are sent to the controller 63. The controller 63 calculates the surplus power amount and determines whether or not the predicted boiling power amount is greater than the surplus power amount . Based on the daytime heating operation start time, the predicted heating power amount at the daytime heating operation start time, and the power consumption per hour at the daytime heating operation start time, the boiling in the daytime time zone mode 34A When it is determined that the boost operation is permissible, the daytime heating operation start instruction time is received as the electric power use instruction, and the controller 63 controls the received daytime heating operation start time and the daytime heating operation start time. When it is determined that the heating operation in the daytime mode 34A is not permissible from the predicted heating power amount in the daytime and the power consumption per hour at the daytime heating operation start time, the daytime The water heating operation start instruction time and the permissible daytime water heating operation instruction time, or the daytime water heating operation start instruction time and the permissible daytime water heating time When the controller 30 receives the predicted power consumption as the power usage instruction and the user has set not to perform the heating operation based on the power usage instruction, the control device 30 switches to the daytime mode 34A. is canceled and the heating operation is performed in the late-night time period mode 34B, and the electric power usage instruction is received from the controller 63 when it is determined that the heating operation in the daytime time period mode 34A is permissible. In the daytime time zone mode 34A, the water heating operation is started at the daytime water heating operation start instruction time, the water heating operation is performed for the stored daytime water heating operation time, and the late night time zone mode 34A is performed. In 34B, the late-night boiling operation start time is delayed so as to boil the amount of hot water boiled at midnight excluding the amount of hot water boiled in the daytime mode 34A, and the boiling operation is executed, and the controller 63 controls the daytime time zone mode 34B. When the electric power usage instruction is received when it is determined that the heating operation in the zone mode 34A is not permitted, the heating operation is started at the daytime heating operation start instruction time in the daytime zone mode 34A. , the water heating operation is performed only for the daytime water heating operation instruction time, and in the late night time period mode 34B, the late night water heating operation calculated by adding the electric power shortage of the water heating operation in the daytime time period mode 34A. By executing the heating operation at the start time, the electric power shortage of the surplus electric energy with respect to the predicted heating electric energy is consumed in the heating operation during the midnight hours.
According to a third aspect of the present invention, in the hot water supply apparatus according to the first aspect, the heating device 20 is a heat pump device.

本発明によれば、コントローラからの電力使用指示に基づいた昼間時間帯モードを行うことで、翌日に予定している余剰電力量が沸き上げ予測電力量に満たない場合にも、余剰電力を温水の加熱に用いることができ、不足電力量については深夜時間帯で沸き上げ運転を実行することで必要な湯量を確保することができる。 According to the present invention, by performing the daytime mode based on the power usage instruction from the controller, even if the amount of surplus power planned for the next day is less than the predicted amount of power for boiling, the surplus power can be used for hot water. The required amount of hot water can be secured by performing the boiling operation during the midnight hours for the shortage of electric power.

本発明の一実施例による給湯装置の構成図1 is a configuration diagram of a water heater according to an embodiment of the present invention; 同給湯装置の動作説明図Operation explanatory diagram of the water heater 本実施例による給湯システムのフローチャートFlowchart of the hot water supply system according to the present embodiment

本発明の第１の実施の形態による給湯装置は、昼間時間帯における電力使用指示を行うコントローラと通信網で接続され、コントローラからの電力使用指示に基づいて昼間時間帯に沸き上げ運転を実行する給湯装置であって、貯湯タンクと、貯湯タンク内の湯水を加熱する加熱装置と、加熱装置が貯湯タンク内の湯水を加熱する沸き上げ運転の運転動作を制御する制御装置と、を備え、制御装置は、記憶された使用湯量履歴によって、沸き上げ運転開始時刻と沸き上げ運転時間とを算出して沸き上げ運転モードを設定し、沸き上げ運転モードとして、昼間時間帯に沸き上げ運転を実行する昼間時間帯モードと、深夜時間帯に沸き上げ運転を実行する深夜時間帯モードとを有し、少なくとも昼間時間帯での昼間沸き上げ運転開始時刻と、昼間沸き上げ運転開始時刻における沸き上げ予測電力量と、昼間沸き上げ運転開始時刻における時間当たりの消費電力量とを昼間時間帯モードとして算出するとともに、昼間沸き上げ運転開始時刻と沸き上げ予測電力量と時間当たりの消費電力量とをコントローラに送信し、コントローラにおいて、受信した昼間沸き上げ運転開始時刻と昼間沸き上げ運転開始時刻における沸き上げ予測電力量と昼間沸き上げ運転開始時刻における時間当たりの消費電力量とから、昼間時間帯モードでの沸き上げ運転を許容できると判断した場合には、昼間沸き上げ運転開始指示時刻を電力使用指示として受信し、コントローラにおいて、受信した昼間沸き上げ運転開始時刻と昼間沸き上げ運転開始時刻における沸き上げ予測電力量と昼間沸き上げ運転開始時刻における時間当たりの消費電力量とから、昼間時間帯モードでの沸き上げ運転を許容できないと判断した場合には、昼間沸き上げ運転開始指示時刻と許容できる昼間沸き上げ運転指示時間、または、昼間沸き上げ運転開始指示時刻と許容できる昼間沸き上げ予測電力量を電力使用指示として受信し、使用者が電力使用指示に基づく沸き上げ運転をしないことを設定している場合には、昼間時間帯モードを解除して深夜時間帯モードで沸き上げ運転を行い、コントローラから昼間時間帯モードでの沸き上げ運転を許容できると判断した場合の電力使用指示を受信したときには、昼間時間帯モードでは、昼間沸き上げ運転開始指示時刻で沸き上げ運転を開始し、記憶されている昼間沸き上げ運転時間だけ沸き上げ運転を実行し、深夜時間帯モードでは、昼間時間帯モードで沸き上げた湯量を除いた深夜沸き上げ湯量を沸き上げるように深夜沸き上げ運転開始時刻を遅らせて沸き上げ運転を実行し、コントローラから昼間時間帯モードでの沸き上げ運転を許容できないと判断した場合の電力使用指示を受信したときには、昼間時間帯モードでは、昼間沸き上げ運転開始指示時刻で沸き上げ運転を開始し、昼間沸き上げ運転指示時間だけ沸き上げ運転を実行し、深夜時間帯モードでは、昼間時間帯モードにおける沸き上げ運転の不足電力量を加えて算出した深夜沸き上げ運転開始時刻で沸き上げ運転を実行することで、沸き上げ予測電力量に対する余剰電力量の不足電力量を、深夜時間帯で沸き上げ運転にて消費させるものである。本実施の形態によれば、コントローラからの電力使用指示に基づいた昼間時間帯モードを行うことで、翌日に予定している余剰電力量が沸き上げ予測電力量に満たない場合にも、昼間時間帯に余剰電力量を超えない電力量で温水の加熱を実行できるとともに、不足電力量については深夜時間帯で沸き上げ運転を実行することで、必要な湯量を確保することができる。 The hot water supply apparatus according to the first embodiment of the present invention is connected to a controller that issues power usage instructions during the daytime through a communication network, and performs a water heating operation during the daytime based on the power usage instructions from the controller. A hot water supply apparatus comprising a hot water storage tank, a heating device for heating hot water in the hot water storage tank, and a control device for controlling the operation of a boiling operation in which the heating device heats the hot water in the hot water storage tank. The apparatus calculates the boiling operation start time and the boiling operation time based on the stored hot water amount history, sets the boiling operation mode, and executes the boiling operation during the daytime as the boiling operation mode. It has a daytime time zone mode and a late night time zone mode in which the heating operation is performed in the late night time zone, and at least the daytime heating operation start time in the daytime time zone and the predicted boiling power at the daytime heating operation start time. and the power consumption per hour at the start time of the daytime heating operation are calculated in the daytime mode, and the daytime heating operation start time, the predicted amount of power to be heated, and the power consumption per hour are sent to the controller. In the controller, based on the received daytime heating operation start time, predicted heating power amount at the daytime heating operation start time, and hourly power consumption at the daytime heating operation start time, the daytime mode When it is determined that the water heating operation is permissible, the daytime water heating operation start instruction time is received as an electric power usage instruction, and the controller predicts water heating at the received daytime water heating operation start time and the daytime water heating operation start time. If it is determined that the water heating operation in the daytime mode is not permissible based on the power consumption and the power consumption per hour at the daytime water heating operation start time, the daytime water heating operation start instruction time and the permissible daytime water heating time are determined. The instruction time for the heating operation, or the instruction time for starting the heating operation in the daytime and the allowable predicted amount of electric power for heating in the daytime are received as the electric power usage instruction, and the user is set not to perform the heating operation based on the electric power usage instruction. In this case, when the daytime mode is canceled and the heating operation is performed in the late-night time mode, and an electric power usage instruction is received from the controller when it is determined that the heating operation in the daytime mode is permissible, In the daytime time zone mode, the water heating operation is started at the daytime water heating operation start instruction time, and the water heating operation is performed for the stored daytime water heating operation time, and in the midnight time zone mode, Late-night boiling operation start time is delayed so that the amount of hot water boiled at midnight, excluding the amount of hot water boiled in the daytime mode, is boiled, and the controller allows the boiling operation in the daytime mode. When the power usage instruction is received when it is determined that it is impossible, in the daytime mode, the heating operation is started at the daytime heating operation start instruction time, the heating operation is performed for the daytime heating operation instruction time, and the heating operation is performed at midnight. In the time zone mode, by executing the heating operation at the start time of the late-night heating operation calculated by adding the amount of power shortage for the heating operation in the daytime mode, the power shortage of the surplus power amount with respect to the predicted power amount for heating is eliminated. The amount is consumed by boiling operation in the late-night hours. According to the present embodiment, by performing the daytime mode based on the power usage instruction from the controller, even if the surplus power amount scheduled for the next day is less than the predicted heating power amount, It is possible to heat hot water with an amount of electric power that does not exceed the surplus amount of electric power during periods of time, and with regard to the insufficient amount of electric power, it is possible to ensure the necessary amount of hot water by performing the heating operation in the late-night time period.

本発明の第２の実施の形態の形態による給湯システムは、昼間時間帯における電力使用指示を行うコントローラと、コントローラと通信網で接続され、コントローラからの電力使用指示に基づいて昼間時間帯に沸き上げ運転を実行する給湯装置と、を有する給湯システムであって、給湯装置は、貯湯タンクと、貯湯タンク内の湯水を加熱する加熱装置と、加熱装置が貯湯タンク内の湯水を加熱する沸き上げ運転の運転動作を制御する制御装置を備え、制御装置は、記憶された使用湯量履歴によって、沸き上げ運転開始時刻と沸き上げ運転時間とを算出して沸き上げ運転モードを設定し、沸き上げ運転モードとして、昼間時間帯に沸き上げ運転を実行する昼間時間帯モードと、深夜時間帯に沸き上げ運転を実行する深夜時間帯モードとを有し、少なくとも昼間時間帯での昼間沸き上げ運転開始時刻と、昼間沸き上げ運転開始時刻における沸き上げ予測電力量と、昼間沸き上げ運転開始時刻における時間当たりの消費電力量とを昼間時間帯モードとして算出するとともに、昼間沸き上げ運転開始時刻と沸き上げ予測電力量と時間当たりの消費電力量とをコントローラに送信し、コントローラは、余剰電力量を算出するとともに、沸き上げ予測電力量が余剰電力量より大きいか否かを判断し、制御装置では、コントローラにおいて、受信した昼間沸き上げ運転開始時刻と昼間沸き上げ運転開始時刻における沸き上げ予測電力量と昼間沸き上げ運転開始時刻における時間当たりの消費電力量とから、昼間時間帯モードでの沸き上げ運転を許容できると判断した場合には、昼間沸き上げ運転開始指示時刻を電力使用指示として受信し、コントローラにおいて、受信した昼間沸き上げ運転開始時刻と昼間沸き上げ運転開始時刻における沸き上げ予測電力量と昼間沸き上げ運転開始時刻における時間当たりの消費電力量とから、昼間時間帯モードでの沸き上げ運転を許容できないと判断した場合には、昼間沸き上げ運転開始指示時刻と許容できる昼間沸き上げ運転指示時間、または、昼間沸き上げ運転開始指示時刻と許容できる昼間沸き上げ予測電力量を電力使用指示として受信し、制御装置は、使用者が電力使用指示に基づく沸き上げ運転をしないことを設定している場合には、昼間時間帯モードを解除して深夜時間帯モードで沸き上げ運転を行い、コントローラから昼間時間帯モードでの沸き上げ運転を許容できると判断した場合の電力使用指示を受信したときには、昼間時間帯モードでは、昼間沸き上げ運転開始指示時刻で沸き上げ運転を開始し、記憶されている昼間沸き上げ運転時間だけ沸き上げ運転を実行し、深夜時間帯モードでは、昼間時間帯モードで沸き上げた湯量を除いた深夜沸き上げ湯量を沸き上げるように深夜沸き上げ運転開始時刻を遅らせて沸き上げ運転を実行し、コントローラから昼間時間帯モードでの沸き上げ運転を許容できないと判断した場合の電力使用指示を受信したときには、昼間時間帯モードでは、昼間沸き上げ運転開始指示時刻で沸き上げ運転を開始し、昼間沸き上げ運転指示時間だけ沸き上げ運転を実行し、深夜時間帯モードでは、昼間時間帯モードにおける沸き上げ運転の不足電力量を加えて算出した深夜沸き上げ運転開始時刻で沸き上げ運転を実行することで、沸き上げ予測電力量に対する余剰電力量の不足電力量を、深夜時間帯で沸き上げ運転にて消費させることを特徴とするものである。本実施の形態によれば、コントローラからの電力使用指示に基づいた昼間時間帯モードを行うことで、翌日に予定している余剰電力量が沸き上げ予測電力量に満たない場合にも、昼間時間帯に余剰電力量を超えない電力量で温水の加熱を実行できるとともに、不足電力量については深夜時間帯で沸き上げ運転を実行することで、必要な湯量を確保することができる。 A hot water supply system according to a second embodiment of the present invention includes a controller that issues power usage instructions during daytime hours, and is connected to the controller via a communication network. A hot water supply system comprising: a hot water supply apparatus that performs a raising operation, the hot water supply apparatus comprising a hot water storage tank, a heating device for heating hot water in the hot water storage tank, and a heating device for heating the hot water in the hot water storage tank. A control device is provided for controlling the operation operation of the operation, and the control device calculates the boiling operation start time and the boiling operation time based on the stored hot water amount history, sets the boiling operation mode, and sets the boiling operation. Modes include a daytime mode in which the heating operation is performed in the daytime and a late-night mode in which the heating operation is performed in the midnight, and at least the daytime heating operation start time in the daytime is provided. Then, the predicted electric energy consumption at the daytime heating operation start time and the electric power consumption per hour at the daytime heating operation start time are calculated in the daytime time zone mode, and the daytime heating operation start time and the boiling prediction are performed. The amount of power and the amount of power consumed per hour are transmitted to the controller , and the controller calculates the surplus power and determines whether or not the predicted boiling power amount is greater than the surplus power amount. , based on the received daytime water heating operation start time, predicted water heating power amount at the daytime water water heating operation start time, and hourly power consumption at the daytime water water heating operation start time, the water heating operation in the daytime mode is selected. If it is determined to be permissible, the daytime heating operation start instruction time is received as an electric power usage instruction, and the controller determines the predicted heating power amount at the received daytime heating operation start time and the daytime heating operation start time and the daytime heating operation start time. If it is determined that the water heating operation in the daytime mode is not permissible based on the power consumption per hour at the water heating operation start time, the daytime water heating operation start instruction time and the permissible daytime water heating operation instruction time are determined. Alternatively, the daytime heating operation start instruction time and the allowable daytime heating predicted power amount are received as the power usage instruction, and the control device sets that the user does not perform the heating operation based on the power usage instruction. In such a case, the daytime mode is canceled and the water heating operation is performed in the late night time mode. When the power use instruction is received, in the daytime mode, the heating operation is started at the daytime heating operation start instruction time, the heating operation is performed for the stored daytime heating operation time, and the midnight time period mode is performed. delays the start time of the late-night heating operation so that the amount of hot water that is heated in the late-night mode, excluding the amount of hot water that was heated in the daytime mode, is delayed, and the controller executes the boiling operation in the daytime mode. is not permissible, in the daytime mode, the water heating operation is started at the daytime water heating operation start instruction time, and the water heating operation is performed for the daytime water heating operation instruction time. , in the late-night time zone mode, by performing the heating operation at the start time of the late-night heating operation calculated by adding the power shortage for the heating operation in the daytime time zone mode, the surplus for the predicted heating power amount It is characterized in that the shortage of electric energy is consumed in the heating operation in the late-night hours. According to the present embodiment, by performing the daytime mode based on the power usage instruction from the controller, even if the surplus power amount scheduled for the next day is less than the predicted heating power amount, It is possible to heat hot water with an amount of electric power that does not exceed the surplus amount of electric power during periods of time, and with regard to the insufficient amount of electric power, it is possible to ensure the necessary amount of hot water by performing the heating operation in the late-night time period.

本発明の第３の実施の形態は、第１の実施の形態による給湯装置において、加熱装置をヒートポンプ装置としたものである。本実施の形態によれば、電力を有効に利用することができる。 According to a third embodiment of the present invention, in the hot water supply apparatus according to the first embodiment, the heating device is a heat pump device. According to this embodiment, electric power can be effectively used.

以下、本発明の一実施例について図面を参照しながら説明する。
図１は本実施例による給湯装置の構成図である。
本実施例による給湯装置は、貯湯タンク１０と、貯湯タンク１０内の湯水を加熱する加熱装置２０と、給湯装置の運転動作を制御する制御装置３０と、使用者が制御装置３０での制御方法を設定できる操作手段４０とを備えている。 An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a configuration diagram of a water heater according to this embodiment.
The hot water supply apparatus according to this embodiment includes a hot water storage tank 10, a heating device 20 for heating the hot water in the hot water storage tank 10, a controller 30 for controlling the operation of the hot water supply apparatus, and a control method for the controller 30 by a user. and an operation means 40 that can set

制御装置３０は、加熱装置２０が貯湯タンク１０内の湯水を加熱する沸き上げ運転の運転動作を制御している。沸き上げ運転は、貯湯タンク１０の湯水が、貯湯タンク１０の下部から導出し、沸き上げ配管１１を通じて加熱装置２０に通水され、加熱装置２０で高温に沸き上げられた後に貯湯タンク１０の上部から導入され、貯湯タンク１０に貯湯される運転動作である。そして、高温に沸き上げられた貯湯タンク１０内の湯水は、給湯栓１２が開栓されると、混合弁１３によって給水配管１４からの給水と所定温度に混合されて給湯栓１２から給湯される。
給湯栓１２から給湯されることによって貯湯タンク１０内で不足する湯水は、貯湯タンク１０の下部に接続した給水配管１４から供給され、貯湯タンク１０内は、温度成層の状態で常に湯水で満たされている。
貯湯タンク１０から給湯栓１２に至る給湯配管１５には、給湯栓１２に供給する湯量を検知する給湯流量検知手段１６を備えている。 The control device 30 controls the operation of the boiling operation in which the heating device 20 heats the hot water in the hot water storage tank 10 . In the boiling operation, hot water in the hot water storage tank 10 is led out from the lower part of the hot water storage tank 10, passed through the heating device 20 through the boiling pipe 11, and heated to a high temperature by the heating device 20, and then heated to the upper part of the hot water storage tank 10. , and the hot water is stored in the hot water storage tank 10. When the hot water supply valve 12 is opened, the hot water in the hot water storage tank 10 which has been boiled to a high temperature is mixed with the water supply from the water supply pipe 14 to a predetermined temperature by the mixing valve 13 and is supplied from the hot water supply valve 12. - 特許庁.
A shortage of hot water in the hot water storage tank 10 due to hot water supply from the hot water tap 12 is supplied from a water supply pipe 14 connected to the lower part of the hot water storage tank 10, and the hot water storage tank 10 is always filled with hot water in a temperature stratified state. ing.
A hot water supply pipe 15 from the hot water storage tank 10 to the hot water tap 12 is provided with hot water supply flow rate detection means 16 for detecting the amount of hot water supplied to the hot water tap 12 .

加熱装置２０は、他の機器５２ａが発電する電力を活用できるとともに分散型エネルギーシステムに参加している他の機器５２ｂが発電する電力を、商用電源５１を介して活用できる。
加熱装置２０には、圧縮機、放熱器、減圧器、及び蒸発器から構成されるヒートポンプ装置が適している。ヒートポンプ装置を加熱装置２０として用いる場合には、放熱器での放熱を加熱源として利用する。加熱装置２０をヒートポンプ装置とすることで、電力を有効に利用することができる。
他の機器５２ａ、５２ｂには太陽光発電装置が適している。他の機器５２ａからの電力はパワーコンディショナー５３で交流に変換され、分電盤５４を介して制御装置３０に供給される。他の機器５２ａを太陽光発電装置とすることで、太陽光発電による電力を有効に利用することができる。なお、太陽光発電装置は、太陽電池モジュールであるが、太陽電池モジュールで発電された電力を蓄えた蓄電ユニットでもよい。さらには、他の機器５２ａ、５２ｂは、太陽光発電装置に限らず、発電機能を有する機器であればよい。 The heating device 20 can utilize the power generated by the other device 52 a and the power generated by the other device 52 b participating in the distributed energy system via the commercial power source 51 .
A heat pump device comprising a compressor, a radiator, a pressure reducer and an evaporator is suitable for the heating device 20 . When a heat pump device is used as the heating device 20, heat radiation from a radiator is used as a heat source. By using a heat pump device as the heating device 20, electric power can be effectively used.
Photovoltaic devices are suitable for the other devices 52a, 52b. Electric power from the other device 52 a is converted into alternating current by the power conditioner 53 and supplied to the control device 30 via the distribution board 54 . By using a photovoltaic power generation device as the other device 52a, power generated by photovoltaic power generation can be effectively used. The photovoltaic power generation device is a solar cell module, but may be a power storage unit that stores electric power generated by the solar cell module. Furthermore, the other devices 52a and 52b are not limited to solar power generation devices, and may be devices having a power generation function.

制御装置３０又はリモコン等の操作手段４０は、ネットワーク送受信機（コントローラ）６１（例えば、ＨＥＭＳ（ＨｏｍｅＥｎｅｒｇｙＭａｎａｇｅｍｅｎｔＳｙｓｔｅｍ）（ホームエネルギーマネジメントシステム））と接続されている。ネットワーク送受信機６１は、インターネット等の通信網６２からサービサー（コントローラ）６３からの電力使用指示を取得し、取得した電力使用指示を制御装置３０又は操作手段４０に送信する。また、ネットワーク送受信機６１は、天気予報情報を取得のうえ、それに基づいて判断した太陽光発電装置による太陽光発電の実行の可否の判定情報、又は、加熱装置２０に関する運転情報を、制御装置３０又は操作手段４０に送信する。
サービサー６３は、昼間時間帯における電力使用指示を行う。 The control device 30 or the operation means 40 such as a remote controller is connected to a network transmitter/receiver (controller) 61 (for example, HEMS (Home Energy Management System)). The network transmitter/receiver 61 acquires a power usage instruction from a servicer (controller) 63 via a communication network 62 such as the Internet, and transmits the acquired power usage instruction to the control device 30 or the operation means 40 . In addition, the network transmitter/receiver 61 acquires the weather forecast information, and then transmits the judgment information as to whether or not the solar power generation device can perform the solar power generation based on the weather forecast information, or the operation information regarding the heating device 20 to the control device 30. Or it is transmitted to the operation means 40 .
The servicer 63 gives a power usage instruction during the daytime hours.

制御装置３０は、タイマー手段３１と、記憶手段３２と、算出手段３３とを備えている。
タイマー手段３１は時間を計時し、タイマー手段３１によって年月日及び時刻を判定できる。従って、昼間時間帯や深夜時間帯は、タイマー手段３１によって判定する。昼間時間帯と深夜時間帯とは、あらかじめ設定される他、操作手段４０での操作によって、又は、ネットワーク送受信機６１で受信した情報によって変更されるものであってもよい。例えば、昼間時間帯は７時から２３時までと、深夜時間帯は２３時から７時までと設定する。なお、昼間時間帯および深夜時間帯は、電力契約時に決定されるものであり、前記時刻間に限られるものではない。
記憶手段３２は、給湯流量検知手段１６で検知される湯量を、タイマー手段３１で計時される時刻とともに記憶する。記憶手段３２には、１日分、１週間分、１ヶ月分、及び１年分のような所定期間における時間帯別の湯量を、使用湯量履歴として記憶している。
算出手段３３は、操作手段４０によって指示された設定モードや記憶手段３２に記憶された使用湯量履歴によって沸き上げ運転モード３４を設定し、沸き上げ運転開始時刻と沸き上げ運転時間とを算出する。
また、算出手段３３では、昼間時間帯での昼間沸き上げ運転開始時刻と、昼間沸き上げ運転開始時刻における沸き上げ予測電力量と、昼間沸き上げ運転開始時刻における時間当たりの消費電力量と、昼間沸き上げ運転時間とを、昼間時間帯モード３４Ａとして算出する。
記憶手段３２では、算出手段３３で算出した、昼間沸き上げ運転開始時刻、昼間沸き上げ運転開始時刻における沸き上げ予測電力量と、昼間沸き上げ運転開始時刻における時間当たりの消費電力量と、昼間沸き上げ運転時間とを記憶する。 The control device 30 includes timer means 31 , storage means 32 and calculation means 33 .
The timer means 31 measures time, and the date and time can be determined by the timer means 31 . Therefore, the timer means 31 determines the daytime time zone and the midnight time zone. The daytime time zone and the midnight time zone may be set in advance, or may be changed by operating the operation means 40 or by information received by the network transmitter/receiver 61 . For example, the daytime hours are set from 7:00 to 23:00, and the late night hours are set from 23:00 to 7:00. It should be noted that the daytime time zone and the late night time zone are determined at the time of the power contract, and are not limited to the time periods described above.
The storage means 32 stores the amount of hot water detected by the hot water supply flow rate detection means 16 together with the time clocked by the timer means 31 . The storage means 32 stores the amount of hot water for each time zone in a predetermined period, such as one day, one week, one month, and one year, as a used hot water amount history.
The calculation means 33 sets the boiling operation mode 34 according to the setting mode instructed by the operation means 40 and the history of the amount of hot water used stored in the storage means 32, and calculates the boiling operation start time and the boiling operation time.
Further, the calculation means 33 calculates the daytime heating operation start time in the daytime zone, the predicted heating power amount at the daytime heating operation start time, the power consumption per hour at the daytime heating operation start time, and the daytime heating operation start time. The boiling operation time is calculated as the daytime time zone mode 34A.
In the storage means 32, the daytime heating operation start time calculated by the calculation means 33; Stores the rising operating time.

沸き上げ運転モード３４として、昼間時間帯モード３４Ａ及び深夜時間帯モード３４Ｂを有している。
昼間時間帯モード３４Ａでは、昼間時間帯に沸き上げ運転を実行する。昼間時間帯モード３４Ａによって、加熱装置２０が他の機器５２ａ、５２ｂが発電する電力を活用できるため、昼間時間帯に他の機器５２ａ、５２ｂが発電する余剰電力量を、温水の加熱に用いることができる。
昼間時間帯モード３４Ａで沸き上げる湯量は、使用湯量履歴に基づいて決定される。使用者が実際に使用した湯量から昼間時間帯モード３４Ａで沸き上げる湯量を決定するため、最適な湯量を沸き上げることができる。 The heating operation mode 34 includes a daytime mode 34A and a late night mode 34B.
In the daytime zone mode 34A, the boiling operation is performed during the daytime zone. The daytime mode 34A allows the heating device 20 to utilize the power generated by the other devices 52a and 52b, so that the surplus power generated by the other devices 52a and 52b during the daytime can be used to heat hot water. can be done.
The amount of hot water to be boiled in the daytime mode 34A is determined based on the history of the amount of hot water used. Since the amount of hot water to be boiled in the daytime mode 34A is determined from the amount of hot water actually used by the user, the optimum amount of hot water can be boiled.

深夜時間帯モード３４Ｂでは、深夜時間帯に沸き上げ運転を実行する。深夜時間帯は、電力需要が少ないため、深夜時間帯モード３４Ｂによって電力消費時間帯の分散を図ることができる。深夜時間帯モード３４Ｂで沸き上げる湯量は、使用湯量履歴に基づいて決定される。使用者が実際に使用した湯量から深夜時間帯モード３４Ｂで沸き上げる湯量を決定するため、最適な湯量を沸き上げることができる。 In the late-night time period mode 34B, the boiling operation is performed in the late-night time period. Since power demand is low during the late night hours, the power consumption time slots can be dispersed by the late night hours mode 34B. The amount of hot water to be boiled in the late-night time zone mode 34B is determined based on the history of the amount of hot water used. Since the amount of hot water to be boiled in the late-night time zone mode 34B is determined from the amount of hot water actually used by the user, the optimum amount of hot water can be boiled.

図２は本実施例による給湯装置の動作説明図である。
図２（ａ）は、給湯の使用例を示している。例えば、図２（ａ）に示すように、１９時から２３時まで、７時、及び１２時に使用する。
図２（ｂ）は貯湯タンク１０の湯水の状態を、図２（ｃ）は加熱装置２０の運転時間帯を示している。 FIG. 2 is an explanatory diagram of the operation of the water heater according to this embodiment.
FIG. 2(a) shows a usage example of hot water supply. For example, as shown in FIG. 2(a), it is used from 19:00 to 23:00, 7:00 and 12:00.
FIG. 2(b) shows the state of hot water in the hot water storage tank 10, and FIG.

図２（ｃ）に示す運転状態Ａは、深夜時間帯モード３４Ｂで沸き上げ運転を実行した場合を示している。
深夜時間帯モード３４Ｂでは、図２（ｃ）に示す深夜時間帯に、使用湯量履歴に基づいて決定される湯量を沸き上げる。図２（ｃ）に示す昼間時間帯（１９時）の沸き上げ運転は、貯湯タンク１０内の残湯量及び／又は使用湯量履歴から判断され、適宜行われる。 An operating state A shown in FIG. 2(c) indicates a case where the boiling operation is performed in the midnight time zone mode 34B.
In the late-night time period mode 34B, the amount of hot water determined based on the history of the amount of hot water used is boiled in the late-night time period shown in FIG. 2(c). The boiling operation during the daytime (19:00) shown in FIG. 2(c) is determined from the amount of remaining hot water in the hot water storage tank 10 and/or the history of the amount of hot water used, and is appropriately performed.

図２（ｄ）に示す運転状態Ｂは、昼間時間帯モード３４Ａで沸き上げ運転を実行した場合を示している。
昼間時間帯モード３４Ａが操作手段４０で設定された場合には、深夜時間帯モード３４Ｂが設定されていても、昼間時間帯モード３４Ａが優先して行われる。
図２（ｄ）に示す運転状態Ｂでは、昼間時間帯モード３４Ａによって昼間時間帯（１２時から１５時まで）に沸き上げ運転が行われる。この昼間時間帯での沸き上げ運転によって、深夜時間帯での沸き上げ運転時間は、図２（ｃ）に示す運転状態Ａに対して短くなる。
昼間時間帯モード３４Ａと深夜時間帯モード３４Ｂとで沸き上げる湯量の配分は、使用湯量履歴に基づいて決定される。すなわち、例えば、使用湯量履歴から判断される湯量を５００Ｌとし、昼間時間帯モード３４Ａで設定された湯量を３００Ｌとすると、深夜時間帯モード３４Ｂで沸き上げる湯量を２００Ｌに決定する。 An operating state B shown in FIG. 2(d) indicates a case where the boiling operation is performed in the daytime mode 34A.
When the daytime mode 34A is set by the operation means 40, the daytime mode 34A is preferentially performed even if the midnight time mode 34B is set.
In the operating state B shown in FIG. 2(d), the boiling operation is performed in the daytime period (from 12:00 to 15:00) by the daytime period mode 34A. Due to the water heating operation during the daytime hours, the water heating operation time during the midnight hours becomes shorter than the operation state A shown in FIG. 2(c).
The allocation of the amount of hot water to be boiled between the daytime mode 34A and the late-night time period mode 34B is determined based on the used hot water amount history. For example, if the amount of hot water determined from the hot water amount history is 500L and the amount of hot water set in the daytime mode 34A is 300L, the amount of hot water to be boiled in the late night mode 34B is determined to be 200L.

図２（ｅ）に示す運転状態Ｃは、算出手段３３で算出され、記憶手段３２で記憶されている昼間時間帯モード３４Ａで設定された湯量３００Ｌを沸き上げるのに必要な昼間沸き上げ運転開始時刻における沸き上げ予測電力量が、サービサー６３において算出され、翌日に予定している余剰電力量を超えた場合に、サービサー６３からの電力使用指示に基づいた運転パターンを示している。
昼間時間帯モード３４Ａでは、サービサー６３からの電力使用指示による昼間沸き上げ運転開始指示時刻で運転を開始し、サービサー６３からの電力使用指示による許容できる昼間沸き上げ運転指示時間で沸き上げ運転を行う。なお、サービサー６３からの電力使用指示を、昼間沸き上げ運転開始指示時刻と許容できる昼間沸き上げ予測電力量としてもよい。この場合の、昼間沸き上げ運転時間は、制御装置３０において、許容できる昼間沸き上げ予測電力量を、昼間沸き上げ運転開始時刻における時間当たりの消費電力量で除算して算出される。
運転状態Ｃでは、設定された湯量３００Ｌを沸き上げるのに必要な昼間沸き上げ運転開始時刻における沸き上げ予測電力量を、昼間時間帯のみで沸き上げ運転すると、翌日に予定している余剰電力量を超えてしまうので、昼間沸き上げ運転開始時刻における沸き上げ予測電力量に対する余剰電力量の不足電力量を、深夜時間帯の沸き上げ運転で消費させるのである。 Operation state C shown in FIG. The operation pattern based on the power usage instruction from the servicer 63 is shown when the estimated amount of power to be heated at the time is calculated by the servicer 63 and exceeds the surplus power amount scheduled for the next day.
In the daytime time zone mode 34A, the operation is started at the daytime heating operation start instruction time according to the power use instruction from the servicer 63, and the boiling operation is performed at the permissible daytime heating operation instruction time according to the power use instruction from the servicer 63. . The power usage instruction from the servicer 63 may be the daytime heating operation start instruction time and the allowable daytime heating predicted power amount. In this case, the daytime heating operation time is calculated in the control device 30 by dividing the allowable daytime heating predicted power amount by the power consumption per hour at the daytime heating operation start time.
In the operating state C, the estimated amount of electric power required to boil the set amount of hot water of 300 L at the start time of the daytime heating operation is calculated as the surplus electric power amount scheduled for the next day when the operation is performed only during the daytime hours. is exceeded, the surplus electric energy deficit with respect to the predicted heating electric energy at the daytime heating operation start time is consumed in the late-night heating operation.

図３は本実施例による給湯システムのフローチャートである。
給湯装置は、制御装置３０の算出手段３３によって、昼間沸き上げ運転開始時刻と昼間沸き上げ運転開始時刻における沸き上げ予測電力量とを、昼間時間帯モード３４Ａとして算出し（Ｓ７１）、昼間沸き上げ運転開始時刻における時間当たりの消費電力量と、昼間沸き上げ運転時間とを算出する（Ｓ７２）。
算出手段３３によって算出された、昼間沸き上げ運転開始時刻、昼間沸き上げ運転開始時刻における沸き上げ予測電力量、昼間沸き上げ運転開始時刻における時間当たりの消費電力量、昼間沸き上げ運転時間は、記憶手段３２に記憶される（Ｓ７３）。
給湯装置の制御装置３０は、昼間沸き上げ運転開始時刻、昼間沸き上げ運転開始時刻における沸き上げ予測電力量、昼間沸き上げ運転開始時刻における時間当たりの消費電力量を、サービサー６３に送信する（Ｓ７４）。
昼間沸き上げ運転開始時刻、昼間沸き上げ運転開始時刻における沸き上げ予測電力量、昼間沸き上げ運転開始時刻における時間当たりの消費電力量を、サービサー６３は、受信する（Ｓ７５）。
使用者は操作手段４０にて、電力使用指示に基づく沸き上げ運転の実行の可否を設定できる。なお、サービサー６３においても、電力使用指示に基づく沸き上げ運転の実行の可否を設定できる。Ｓ７６において、電力使用指示に基づく沸き上げ運転をしないことが設定されている場合には、昼間時間帯モード３４Ａは解除され、深夜時間帯モード３４Ｂで、深夜時間帯に沸き上げ運転が行われる（Ｓ７７）。 FIG. 3 is a flow chart of the hot water supply system according to this embodiment.
The hot water supply apparatus calculates the daytime heating operation start time and the predicted heating power amount at the daytime heating operation start time by the calculation means 33 of the control device 30 as the daytime time zone mode 34A (S71). The power consumption per hour at the operation start time and the daytime heating operation time are calculated (S72).
The daytime heating operation start time, the predicted heating power amount at the daytime heating operation start time, the power consumption per hour at the daytime heating operation start time, and the daytime heating operation time calculated by the calculation means 33 are stored. It is stored in means 32 (S73).
The controller 30 of the hot water supply apparatus transmits to the servicer 63 the daytime heating operation start time, the predicted heating power amount at the daytime heating operation start time, and the power consumption per hour at the daytime heating operation start time (S74). ).
The servicer 63 receives the daytime heating operation start time, the predicted heating power amount at the daytime heating operation start time, and the power consumption per hour at the daytime heating operation start time (S75).
The user can use the operation means 40 to set whether or not to perform the boiling operation based on the power usage instruction. Note that the servicer 63 can also set whether or not to perform the boiling operation based on the power usage instruction. In S76, if it is set not to perform the heating operation based on the power usage instruction, the daytime time zone mode 34A is canceled, and the heating operation is performed in the late night time zone in the late night time zone mode 34B ( S77).

電力使用指示に基づく沸き上げ運転を実行することが設定されている場合には、サービサー６３は、受信した昼間沸き上げ運転開始時刻と昼間沸き上げ運転開始時刻における沸き上げ予測電力量と昼間沸き上げ運転開始時刻における消費電力量とから、昼間沸き上げ運転開始時刻における沸き上げ予測電力量が余剰電力量より大きいか否かを判断、すなわち、昼間時間帯モード３４Ａでの運転を許容できるか否かを判断する（Ｓ７８）。 When it is set to execute the water heating operation based on the electric power usage instruction, the servicer 63 receives the received daytime water heating operation start time and the daytime water heating operation start time, and predicts the amount of electric power to be heated and the daytime water heating operation start time. Based on the power consumption at the operation start time, it is determined whether or not the predicted power amount at the daytime heating operation start time is greater than the surplus power amount, that is, whether operation in the daytime mode 34A is permissible. (S78).

Ｓ７８において、予定している余剰電力量が昼間沸き上げ運転開始時刻における沸き上げ予測電力量以下であり、昼間時間帯モード３４Ａでの運転を許容できるとサービサー６３が判断した場合には、昼間沸き上げ運転開始指示時刻を、電力使用指示として給湯装置の制御装置３０に送信する（Ｓ７９）。
Ｓ７９において、電力使用指示である昼間沸き上げ運転開始指示時刻が送信された場合には、制御装置３０では、昼間沸き上げ運転開始指示時刻で昼間時間帯での沸き上げ運転を開始し、既に制御装置３０の算出手段３３によって算出され、記憶手段３２に記憶されている昼間沸き上げ運転時間だけ運転を実行する（Ｓ８０）。これにより、翌日に予定している余剰電力量が沸き上げ予測電力量以上の場合には、制御装置３０が受信する電力使用指示を昼間沸き上げ運転開始指示時刻とし、それに基づいて昼間時間帯モードを行うことで、昼間時間帯に余剰電力量を温水の加熱に用いることができる。 In S78, when the scheduled surplus power amount is equal to or less than the predicted heating power amount at the daytime heating operation start time, and the servicer 63 determines that operation in the daytime mode 34A is permissible, the daytime heating is performed. The instruction time to start the operation for raising is transmitted to the controller 30 of the hot water supply apparatus as a power usage instruction (S79).
In S79, if the daytime heating operation start instruction time, which is the power usage instruction, is transmitted, the control device 30 starts the daytime heating operation at the daytime heating operation start instruction time, and has already been controlled. The operation is performed for the daytime boiling operation time calculated by the calculation means 33 of the device 30 and stored in the storage means 32 (S80). As a result, when the amount of surplus power scheduled for the next day is equal to or greater than the predicted amount of power for heating, the power use instruction received by the control device 30 is set to the daytime heating operation start instruction time, and the daytime time zone mode is set based on this. can be used to heat hot water during the daytime.

Ｓ７８において、昼間沸き上げ運転開始時刻における沸き上げ予測電力量が予定している余剰電力量を超える、すなわち、昼間時間帯モード３４Ａでの運転を許容できないとサービサー６３が判断した場合には、昼間沸き上げ運転開始指示時刻と許容できる昼間沸き上げ運転指示時間、または、昼間沸き上げ運転開始指示時刻と許容できる昼間沸き上げ予測電力量を、電力使用指示として、サービサー６３から制御装置３０に送信する（Ｓ８１）。
サービサー６３から制御装置３０に、Ｓ８１の電力使用指示が送信された場合には、制御装置３０では、昼間時間帯における沸き上げ運転の不足電力量（＝深夜時間帯に沸き上げる電力量）と、深夜沸き上げ運転時間とを算出し（Ｓ８２）、深夜時間帯で沸き上げ運転を実行する（Ｓ８３）。これにより、昼間沸き上げ運転開始時刻における沸き上げ予測電力量に対する余剰電力量の不足電力量を、深夜時間帯の沸き上げ運転で消費できる。
その後、サービサー６３から制御装置３０に送信された電力使用指示である昼間沸き上げ運転開始指示時刻で昼間時間帯の沸き上げ運転を開始し、許容できる昼間沸き上げ運転指示時間だけ昼間時間帯で沸き上げ運転を実行する（Ｓ８４）。この場合、許容できる昼間沸き上げ運転指示時間は、既に制御装置３０の算出手段３３によって算出され、記憶手段３２に記憶されている昼間沸き上げ運転時間よりも、短い時間である。
また、Ｓ８１において、昼間沸き上げ運転開始指示時刻と許容できる昼間沸き上げ予測電力量が、電力使用指示として、サービサー６３から制御装置３０に送信された場合には、昼間沸き上げ運転時間は、制御装置３０において、許容できる昼間沸き上げ予測電力量を、昼間沸き上げ運転開始時刻における時間当たりの消費電力量で除算して算出され、昼間時間帯で沸き上げ運転が実行される。この場合の、昼間沸き上げ運転時間も、既に制御装置３０の算出手段３３によって算出され、記憶手段３２に記憶されている昼間沸き上げ運転時間よりも、短い時間である。 In S78, if the servicer 63 determines that the estimated amount of power to be heated at the daytime heating operation start time exceeds the planned surplus power amount, that is, that operation in the daytime mode 34A is not permitted, The servicer 63 transmits the instruction time to start the heating operation and the permissible daytime heating operation instruction time, or the instruction time to start the daytime heating operation and the permissible daytime heating predicted power amount as the electric power usage instruction from the servicer 63 to the control device 30. (S81).
When the servicer 63 transmits the power usage instruction in S81 to the control device 30, the control device 30 determines the amount of power shortage for the heating operation during the daytime hours (=the amount of power to be heated during the midnight hours), A late-night boiling operation time is calculated (S82), and the boiling operation is performed in the late-night time zone (S83). As a result, the deficit of the surplus electric energy with respect to the predicted heating electric energy at the daytime heating operation start time can be consumed in the late-night heating operation.
After that, the water heating operation in the daytime zone is started at the daytime heating operation start instruction time, which is the power usage instruction transmitted from the servicer 63 to the control device 30, and the water heating operation in the daytime zone is started for the permissible daytime heating operation instruction time. Raising operation is executed (S84). In this case, the permissible daytime boiling operation instruction time is shorter than the daytime boiling operation time already calculated by the calculation means 33 of the control device 30 and stored in the storage means 32 .
Further, in S81, when the daytime heating operation start instruction time and the allowable daytime heating predicted power amount are transmitted from the servicer 63 to the control device 30 as an electric power usage instruction, the daytime heating operation time is In the device 30, the allowable daytime heating predicted power amount is calculated by dividing the hourly power consumption at the daytime heating operation start time, and the heating operation is performed in the daytime time zone. In this case, the daytime boiling operation time is also shorter than the daytime boiling operation time already calculated by the calculation means 33 of the control device 30 and stored in the storage means 32 .

このように、昼間時間帯に発電する余剰電力量が十分な場合には、給湯装置が算出した昼間時間帯モード３４Ａで温水の加熱を行え、昼間時間帯に発電する余剰電力量に不足が発生した場合にも、サービサー６３からの電力使用指示に基づいた昼間時間帯モード３４Ａを行うことで、翌日に予定している余剰電力量が沸き上げ予測電力量に満たない場合にも、余剰電力を温水の加熱に用いることができ、不足電力量については深夜時間帯で沸き上げ運転を実行することで必要な湯量を確保することができる。
なお、図３では、コントローラとしてサービサー６３を用いて説明したが、ネットワーク送受信機６１をコントローラとすることもできる。ネットワーク送受信機６１をコントローラとして用いる場合には、ネットワーク送受信機６１が通信網６２から取得する天気予報情報等を基に余剰電力量を算出し、昼間時間帯における電力使用指示を行うことができる。 In this way, when the surplus power generated during the daytime is sufficient, hot water can be heated in the daytime mode 34A calculated by the water heater, and the surplus power generated during the daytime becomes insufficient. In this case, the daytime mode 34A is performed based on the power usage instruction from the servicer 63, so that even if the amount of surplus power scheduled for the next day is less than the predicted amount of power for boiling, the surplus power can be used. It can be used to heat hot water, and the necessary amount of hot water can be secured by running the heating operation during the late-night hours to deal with the power shortage.
Although FIG. 3 has been described using the servicer 63 as the controller, the network transmitter/receiver 61 can also be used as the controller. When the network transceiver 61 is used as a controller, the network transceiver 61 can calculate the amount of surplus power based on the weather forecast information and the like obtained from the communication network 62, and issue power usage instructions during daytime hours.

本発明は、特に分散型エネルギーシステムを実現する上で有効である。 The present invention is particularly effective in realizing a distributed energy system.

１０貯湯タンク
１１沸き上げ配管
１２給湯栓
１３混合弁
１４給水配管
１５給湯配管
１６給湯流量検知手段
２０加熱装置
３０制御装置
３１タイマー手段
３２記憶手段
３３算出手段
３４沸き上げ運転モード
３４Ａ昼間時間帯モード
３４Ｂ深夜時間帯モード
４０操作手段
５１商用電源
５２ａ、５２ｂ他の機器
５３パワーコンディショナー
５４分電盤
６１ネットワーク送受信機（コントローラ）
６２通信網
６３サービサー（コントローラ） 10 hot water storage tank 11 boiling pipe 12 hot water tap 13 mixing valve 14 water supply pipe 15 hot water supply pipe 16 hot water supply flow rate detection means 20 heating device 30 control device 31 timer means 32 storage means 33 calculation means 34 boiling operation mode 34A daytime mode 34B Midnight time zone mode 40 Operation means 51 Commercial power supply 52a, 52b Other devices 53 Power conditioner 54 Distribution board 61 Network transceiver (controller)
62 communication network 63 servicer (controller)

Claims

A water heater that is connected to a controller that issues power usage instructions during daytime hours via a communication network, and performs a heating operation during the daytime hours based on the power usage instructions from the controller,
a water storage tank;
a heating device for heating the hot water in the hot water storage tank;
a control device for controlling the operation of the boiling operation in which the heating device heats the hot water in the hot water storage tank;
with
The control device is
setting the boiling operation mode by calculating the boiling operation start time and the boiling operation time based on the stored history of the amount of hot water used;
As the boiling operation mode, there is a daytime time zone mode in which the boiling operation is performed in the daytime time zone, and a midnight time zone mode in which the boiling operation is performed in the midnight time zone,
At least the daytime heating operation start time in the daytime time zone, the predicted heating power amount at the daytime heating operation start time, and the power consumption per hour at the daytime heating operation start time are calculated in the daytime time zone. calculating as a mode, transmitting the daytime heating operation start time, the predicted heating power amount, and the power consumption per hour to the controller;
In the controller, from the received daytime heating operation start time, the predicted heating power amount at the daytime heating operation start time, and the power consumption at the daytime heating operation start time, If it is determined that the water heating operation is permissible, the daytime water heating operation start instruction time is received as the electric power use instruction,
In the controller, from the received daytime heating operation start time, the predicted heating power amount at the daytime heating operation start time, and the power consumption at the daytime heating operation start time, If it is determined that the water heating operation is not permissible, the daytime water heating operation start instruction time and the permissible daytime water heating operation instruction time, or the daytime water heating operation start instruction time and the permissible daytime water heating prediction receiving an amount of power as the power usage indication;
when the user has set not to perform the boiling operation based on the power usage instruction, the daytime time period mode is canceled and the boiling operation is performed in the late night time period mode;
When the electric power usage instruction is received from the controller when it is determined that the water heating operation in the daytime mode is permissible, the water heating is performed at the daytime water heating operation start instruction time in the daytime mode. The operation is started, the boiling operation is performed for the stored daytime heating operation time, and in the late-night time zone mode, the amount of hot water boiled at midnight excluding the amount of hot water boiled in the daytime time zone mode is boiled. delaying the late-night boiling operation start time so as to increase the boiling operation,
When the electric power use instruction is received from the controller when it is determined that the water heating operation in the daytime mode is not permitted, the water heating is performed at the daytime water heating operation start instruction time in the daytime mode. The operation is started, the water heating operation is executed for the daytime water heating operation instruction time, and in the late night time period mode, the late night water heating calculated by adding the electric power shortage for the water heating operation in the daytime time period mode. By executing the heating operation at the start time of the heating operation, the electric power shortage of the surplus electric power amount with respect to the predicted electric power amount to be heated is consumed in the heating operation during the late-night hours. water heater.

a controller that instructs power usage during the daytime;
a water heater connected to the controller via a communication network and performing a boiling operation during the daytime based on the power usage instruction from the controller;
A hot water supply system having
The water heater is
a water storage tank;
a heating device for heating the hot water in the hot water storage tank;
a control device for controlling the operation of the boiling operation in which the heating device heats the hot water in the hot water storage tank;
with
The control device is
setting the boiling operation mode by calculating the boiling operation start time and the boiling operation time based on the stored history of the amount of hot water used;
As the boiling operation mode, there is a daytime time zone mode in which the boiling operation is performed in the daytime time zone, and a midnight time zone mode in which the boiling operation is performed in the midnight time zone,
At least the daytime heating operation start time in the daytime time zone, the predicted heating power amount at the daytime heating operation start time, and the power consumption per hour at the daytime heating operation start time are calculated in the daytime time zone. calculating as a mode, transmitting the daytime heating operation start time, the predicted heating power amount, and the power consumption per hour to the controller;
The controller is
calculating a surplus power amount and determining whether or not the predicted boiling power amount is greater than the surplus power amount;
In the control device,
In the controller, from the received daytime heating operation start time, the predicted heating power amount at the daytime heating operation start time, and the power consumption at the daytime heating operation start time, If it is determined that the water heating operation is permissible, the daytime water heating operation start instruction time is received as the electric power use instruction,
In the controller, from the received daytime heating operation start time, the predicted heating power amount at the daytime heating operation start time, and the power consumption at the daytime heating operation start time, If it is determined that the water heating operation is not permissible, the daytime water heating operation start instruction time and the permissible daytime water heating operation instruction time, or the daytime water heating operation start instruction time and the permissible daytime water heating prediction receiving an amount of power as the power usage indication;
The control device is
when the user has set not to perform the boiling operation based on the power usage instruction, the daytime time period mode is canceled and the boiling operation is performed in the late night time period mode;
When the electric power usage instruction is received from the controller when it is determined that the water heating operation in the daytime mode is permissible, the water heating is performed at the daytime water heating operation start instruction time in the daytime mode. The operation is started, the boiling operation is performed for the stored daytime heating operation time, and in the late-night time zone mode, the amount of hot water boiled at midnight excluding the amount of hot water boiled in the daytime time zone mode is boiled. delaying the late-night boiling operation start time so as to increase the boiling operation,
When the electric power use instruction is received from the controller when it is determined that the water heating operation in the daytime mode is not permitted, the water heating is performed at the daytime water heating operation start instruction time in the daytime mode. The operation is started, the water heating operation is executed for the daytime water heating operation instruction time, and in the late night time period mode, the late night water heating calculated by adding the electric power shortage for the water heating operation in the daytime time period mode. By executing the heating operation at the start time of the heating operation, the electric power shortage of the surplus electric power amount with respect to the predicted electric power amount to be heated is consumed in the heating operation during the late-night hours. hot water system.

2. The water heater according to claim 1 , wherein said heating device is a heat pump device.