JP3963601B2 - Hot water storage hot water source - Google Patents

Description

【００３３】
なお、設定加熱時間の求めかたについては、上記〔数１〕に限られるものではなく、その他の演算にて求めてもよく、タイマにより求めた復帰時間に基づいて、復帰時間が適正値になるように、設定加熱時間を補正するものであればよい。そして、このようにして、復帰時間が適正値になるように、設定加熱時間が補正されるので、加熱作動を頻繁に開始、停止させることもなく、加熱作動における温度成層の乱れを抑制しつつ、湯水循環手段および加熱手段の耐久性を向上させ、かつ、貯湯タンク１内に余剰に貯湯された温水を無駄に冷却することを防止することができる。
【００３４】
前記通常貯湯処理は、給湯用操作装置ＫＳにより運転が指令されている状態において、水流スイッチＦＳにより非給湯中であると、貯湯不足状態が検出されると加熱作動を開始し、設定貯湯状態であることが検出されると加熱作動を停止する処理を実行する。
具体的に説明すると、給湯用操作装置ＫＳにより運転が指令されている状態において、水流スイッチＦＳがＯＦＦされて非給湯中が検出されている状態で、貯湯不足状態が検出されると、すなわち、貯湯温サーミスタ１０による検出温度が設定温度未満であると、図３に示すように、循環ポンプ３を作動させ、貯湯タンク１の底部の水を循環路２に取り出すように底部用三方弁９ｂを切換えて、貯湯タンク１の底部の水を加熱部Ｋにて加熱しながら循環させる。
【００３５】
そして、例えば、循環路２を通流する湯水が十分に加熱される設定時間が経過すると、あるいは、循環路２における湯水の温度が設定温度以上になると、循環路２を通流する湯を貯湯タンク１の上部に戻すように上部用三方弁７ｂを切り換えて、加熱された湯を貯湯タンク１の上部に戻して貯湯を行う。
このようにして、貯湯不足状態が検出されると、加熱部Ｋ、循環路２、および、循環ポンプ３による加熱作動を開始し、設定貯湯状態であること、すなわち、貯湯温サーミスタ１０による検出温度が設定温度以上であることが検出されると、加熱部Ｋ、循環路２、および、循環ポンプ３による加熱作動を停止して、貯湯タンク１内に貯湯する。
【００３６】
上述のように、給湯中であるときには、余剰貯湯処理を実行し、非給湯中であるときには、通常貯湯処理を実行するので、貯湯タンク内の温水の無駄な冷却をより一層防止しながら、貯湯タンク内の温度成層の乱れを抑制し、湯水循環手段および加熱手段の耐久性の向上を図ることができる。
【００３７】
前記放熱処理は、設定貯湯状態であることが検出されている状態において、外部放熱部Ｈにおける放熱要求に伴って外部放熱部Ｈにて放熱する処理を実行する。
具体的に説明すると、設定貯湯状態であること、すなわち、貯湯温サーミスタ１０による検出温度が設定温度未満であることが検出されている状態において、給湯用操作装置ＫＳの指令により風呂追焚きが指令されるか、床暖房装置の運転が開始されるか、または、その両方がされて、風呂追焚き用循環ポンプ１５ａや床暖房用循環ポンプ１６ａが作動され、放熱処理の実行が要求されると、循環ポンプ３を作動させ、貯湯タンク１内の中間部の湯水を循環路２に取り出すように中間用三方弁８ｂを切換え、循環路２の湯水を貯湯タンク１の底部に戻すように底部用三方弁９ｂを切換える。
そして、図４に示すように、貯湯タンク１の中間部の湯水を熱源として風呂追焚き用熱交換部１５と床暖房用熱交換部１６のうちの放熱が要求されている一方またはその両方において放熱し、放熱後の湯水を貯湯タンク１の底部に戻すようにする。
【００３８】
また、加熱部Ｋの動作について説明すると、エンジンヒートポンプ式冷暖房装置Ｃが冷房運転を実行している状態で、かつ、第１排熱切換機構１７が加熱状態に切換えられると、第１熱交換部１２において、ヒートポンプ式冷暖房における排熱を熱源として循環路２を通流する湯水を加熱することが可能となる。
また、エンジンヒートポンプ式冷暖房装置Ｃが作動されている状態で、かつ、第２排熱切換機構１８が加熱状態に切り換えられると、第２熱交換部１３において、ガスエンジン排熱を熱源として循環路２を通流する湯水を加熱することが可能となる。
そして、第３熱交換部１４においては、燃焼装置Ｎを作動させてバーナＢの燃焼により循環路２を通流する湯水を加熱することができる。
【００３９】
このようにして、第１〜３熱交換部１２，１３，１４のそれぞれの熱交換部において加熱可能であるが、貯湯タンク１への貯湯や外部放熱部Ｈに対する加熱負荷に応じて、第１熱交換部１２、第２熱交換部１３、および、第３熱交換部１４における加熱作動の実行が制御される。
つまり、例えば、運転の立ち上がりなどのように加熱負荷が大きいときには、第１排熱切換機構および第２排熱切換機構を加熱状態に切換え、かつ、バーナＢによる燃焼を行い、第１〜３熱交換部１２，１３，１４の全ての熱交換部において加熱可能にする。
【００４０】
また、通常時には、エンジンヒートポンプ式冷暖房装置Ｃの運転状態よって第１および第２熱交換部１２，１３における加熱が可能となるために、第１および第２熱交換部１２，１３において加熱されるか否かに基づいて、燃焼装置Ｎを作動させてバーナＢの燃焼により第３熱交換部１４において加熱されるか否かが判別される。
つまり、エンジンヒートポンプ式冷暖房装置Ｃの運転状態よって第１および第２熱交換部１２，１３における加熱が行われないときには、あるいは、第１および第２熱交換部１２，１３における加熱では貯湯タンク１への貯湯に対する加熱負荷に不足するときには、燃焼装置Ｎを作動させてバーナＢの燃焼により第３熱交換部１４における加熱を実行して、貯湯タンク１への貯湯や外部放熱部Ｈに対する加熱負荷に対応するように加熱部Ｋの動作を制御するようにしている。
【００４１】
前記制御装置Ｓの制御動作を図５のフローチャートに基づいて説明する。
まず、給湯用操作装置ＫＳにより運転が指令されている状態で、タイマをリセットして、設定加熱時間ｔ１および復帰時間ｔ２として記憶している値を復帰時間の適正値ｔｓに記憶し直してメモリの初期化を行う（ステップ１）。
そして、設定加熱時間ｔ１を上記〔数１〕にて演算する（ステップ２）。なお、運転初期においては、ｔ１＝ｔ２＝ｔｓなので、設定加熱時間ｔ１は復帰時間の適正値ｔｓとなる。
【００４２】
その後、貯湯温サーミスタ１０の検出温度ＴＫが設定温度未満で貯湯不足状態が検出されると、貯湯処理を実行する（ステップ３，４）。つまり、循環ポンプ３を作動させ、貯湯タンク１の底部の水を循環路２に取り出すように底部用三方弁９ｂを切換えて、貯湯タンク１の底部の水を加熱部Ｋにて加熱しながら循環させる。
そして、例えば、循環路２を通流する湯水が十分に加熱される設定時間が経過すると、あるいは、循環路２における湯水の温度が設定温度以上になると、循環路２を通流する湯を貯湯タンク１の上部に戻すように上部用三方弁７ｂを切り換えて、加熱された湯を貯湯タンク１の上部に戻して貯湯を行う。
【００４３】
このようにして、貯湯タンク１への貯湯を行い、貯湯温サーミスタ１０の検出温度ＴＫが設定温度以上になり設定貯湯状態であることが検出されると、水流スイッチＦＳがＯＮ作動されているか否かを検出し、ＯＮ作動されて給湯中であると、タイマのカウントが０ならばタイマのカウントを開始し、設定貯湯状態であることが検出されてからの時間をタイマにより計測する（ステップ３，５〜７）。
そして、タイマのカウントが求めた設定加熱時間ｔ１になると、すなわち、設定貯湯状態であることが検出されてから設定加熱時間ｔ１が経過すると、加熱部Ｋ、循環ポンプ３による加熱作動を停止する停止処理を実行し、設定加熱時間ｔ１を記憶して、タイマをリセットし、再びタイマのカウントをスタートさせ、加熱作動を停止してからの時間をタイマにより計測する（ステップ８〜１１）。
【００４４】
なお、停止処理について詳述すると、循環ポンプ３が作動中であればその作動を停止させ、第１〜３熱交換部１２，１３，１４にて循環路２の湯水が加熱されないように、第１排熱切換機構１７および第２排熱切換機構１８が加熱状態に切換えられていると排熱状態に切換えるとともに、バーナＢが燃焼中であればバーナＢでの燃焼を停止させる。
【００４５】
水流スイッチＦＳがＯＮ作動されて給湯中であると、貯湯温サーミスタ１０の検出温度ＴＫが設定温度未満である貯湯不足状態が検出されると、タイマによるカウント、すなわち、加熱作動を停止してから貯湯不足状態になるまでの復帰時間ｔ２が記憶される（ステップ１２〜１４）。
このようにして、復帰時間ｔ２がタイマにより求められると、復帰時間ｔ２が適正値ｔｓになるように、求めた復帰時間ｔ２に基づいて、上記〔数１〕にて設定加熱時間ｔ１を求められる（ステップ３）。
【００４６】
また、貯湯不足状態が検出されるに伴って加熱作動が開始されるが、設定貯湯状態であることが検出され、水流スイッチＦＳがＯＦＦで非給湯中であると（ステップ３〜５）、加熱部Ｋ、循環ポンプ３による加熱作動を停止する停止処理を実行する（ステップ１５）。
このようにして、給湯中であると、設定貯湯状態であることが検出されてから設定加熱時間が経過するまで貯湯処理が継続して実行され、非給湯中であると、設定貯湯状態であることが検出されると、加熱作動を停止させて貯湯処理を終了させる。
【００４７】
そして、設定貯湯状態であることが検出されて、停止処理を実行した後、給湯用操作装置ＫＳの指令により風呂追焚きが指令されるか、床暖房装置の運転が開始されるか、または、その両方がされて、放熱処理の実行が要求されると、放熱処理を実行する（ステップ１５〜１７）。
つまり、循環ポンプ３を作動させ、貯湯タンク１内の湯水を循環路２に取り出すように中間用三方弁８ｂを切換え、循環路２の湯水を貯湯タンク１内に戻すように底部用三方弁９ｂを切換えて、貯湯タンク１の中間部の湯水を熱源として風呂追焚き用熱交換部１５と床暖房用熱交換部１６のうちの放熱が要求されている一方またはその両方において放熱する。
【００４８】
また、給湯用操作装置ＫＳの指令により風呂追焚きが指令されず、かつ、床暖房装置の運転が停止された状態で、放熱処理の実行が要求されていないと、貯湯温サーミスタ１０の検出温度ＴＫが設定温度未満となるまで、あるいは、給湯用操作装置ＫＳの指令により風呂追焚きが指令されたり、床暖房装置の運転が開始されたりして、放熱処理の実行が要求されるまで、貯湯処理あるいは放熱処理の実行を待機させる待機処理を実行する（ステップ１６，１８）。
つまり、循環ポンプ３が作動していればその作動を停止させ、第１排熱切換機構１７および第２排熱切換機構１８が加熱状態に切換えられていると排熱状態に切換えるとともに、バーナＢが燃焼中であればバーナＢでの燃焼を停止させる。
【００４９】
〔別実施形態〕
（１）上記実施形態では、給湯中であると、余剰貯湯処理を実行し、非給湯中であると、通常貯湯処理を実行するようにしているが、給湯中であるか、非給湯中であるかにかかわらず、常に、余剰貯湯処理を実行するようにしてもよい。
【００５０】
（２）上記実施形態では、貯湯タンク１の底部から取り出した湯水を通流量を調整することなく、加熱部Ｋにて加熱するようにしているが、例えば、図１の仮想線に示すように、加熱部Ｋにて加熱する湯水の通流量を調整する通流量調整手段としての比例弁１１を設け、給湯用操作装置ＫＳにて運転が開始されてから設定時間経過するまでは、比例弁１１を絞って湯水の通流量が減少するように調整するようにしてもよい。
また、通流量調整手段としては、この比例弁１１に限られるものではなく、循環ポンプ３の回転数を制御することによって、湯水の通流量を調整するようにしてもよい。
【００５１】
（３）上記実施形態では、水流スイッチＦＳにて、給湯中であるか、非給湯中であるかを検出するようにしているが、水流スイッチＦＳに限られるものではなく、通流量を検出する流量センサなどを用いてもよい。
【００５２】
（４）上記実施形態では、加熱部Ｋを、ヒートポンプ式冷暖房における排熱を利用する第１熱交換部１２、エンジン排熱を利用する第２熱交換部１３、バーナＢを備える燃焼装置Ｎを利用する第３熱交換部１４にて構成されているが、加熱部Ｋの構成は、複数あるいは単数でもよく、電気ヒータなど各種の加熱装置が適応可能である。
【００５３】
（５）上記実施形態では、貯湯タンク１への貯湯を行うとともに、外部放熱部Ｈにおける放熱をも行えるようにしているが、貯湯タンク１への貯湯のみを行うものでもよい。
つまり、上記実施形態において、貯湯タンク１の中間部に設けられている中間部接続路８ａと中間部用三方弁８ｂとを設けずに、循環路２と貯湯タンク１とが、貯湯タンク１の上部と底部の２箇所で連通接続するようにしてもよい。
【００５４】
（６）上記実施形態では、本発明にかかる給湯装置をエンジンヒートポンプ式冷暖房給湯システムに適応した例を示しているが、瞬間湯沸器などの一般的な給湯装置や家庭用コージェネレーションシステムにおけるエンジン排熱および発電機排熱を利用するシステムに適応させることも可能である。
【図面の簡単な説明】
【図１】エンジンヒートポンプ式冷暖房給湯システムの概略構成図
【図２】制御装置の制御ブロック図
【図３】エンジンヒートポンプ式冷暖房給湯システムの概略構成図
【図４】エンジンヒートポンプ式冷暖房給湯システムの概略構成図
【図５】制御装置の制御動作を示すフローチャート
【符号の説明】
１ 貯湯タンク
６ 給湯路
１０ 温度検出手段
１１ 通流量調整手段
ＦＳ 給湯状態検出手段
Ｊ 湯水循環手段
Ｋ 加熱手段
Ｓ 制御手段[0001]
BACKGROUND OF THE INVENTION
The present invention comprises a hot water storage tank having a hot water supply channel connected to the upper part,
The hot water circulation is performed by heating the hot water taken out from the bottom of the hot water storage tank with a heating means so that the hot water is stored in the hot water tank by forming a temperature stratification. Hot water circulation means for circulating hot water in a state;
Whether the lower end position of the formation range of the high temperature portion in the temperature stratification of the hot water formed in the hot water storage tank is a set hot water storage state below the set value or a hot water shortage state above the set value. Temperature detection means for detecting the temperature of hot water,
Control means for controlling the heating operation for hot water storage by operating the heating means and the hot water circulation means based on the detection information of the temperature detection means,
The controller starts the heating operation when the hot water shortage state is detected, and executes the excess hot water control to stop the heating operation when the set heating time has elapsed since the hot water storage state is detected. The present invention relates to a hot water storage type hot water supply heat source device configured to perform the above.
[0002]
[Prior art]
The hot water storage type hot water supply heat source device as described above continues the heating operation by the hot water circulation means and the heating means until the set heating time elapses after it is detected that the hot water storage state is set, and the hot water storage in the hot water storage tank is continued. By making the amount excessive, the heating operation is prevented from starting and stopping frequently, and the temperature stratification is disturbed by supplying hot water with unstable temperature during the transition period into the hot water storage tank. In addition, the durability of the hot water circulating means and the heating means is improved.
That is, when it is detected that the set hot water storage state is detected, the heating operation by the hot water circulation means and the heating means is stopped, and the lower end position of the formation range of the high temperature portion in the temperature stratification of hot water formed in the hot water storage tank is Because it moves in a short time above the set value with use, the return time from when the heating operation is stopped until it becomes short of hot water storage is shortened, and by repeatedly starting and stopping the heating operation, Hot water with unstable temperature is frequently supplied into the hot water storage tank to prevent the temperature stratification from being disturbed, and frequent operation will accelerate the consumption of the hot water circulation means and heating means. Is intended to avoid this.
[0003]
As such a hot water storage type hot water supply heat source device, a detecting means for detecting the temperature of hot water before being heated by the heating means is provided, and when the detected temperature is high, the set heating time is shortened and the detected temperature is low. Sometimes, a set heating time is lengthened (for example, Japanese Patent Laid-Open No. 8-145470).
[Problems to be solved by the invention]
If the return time from when the heating operation is stopped to when the hot water storage is insufficient is too short, the temperature stratification tends to be disturbed, and the consumption of the hot water circulation means and the heating means is accelerated, and conversely, the heating If the return time is too long after the operation is stopped until the hot water storage is insufficient, the hot water stored excessively will not be used, and it will be cooled unnecessarily, so set the heating time to an appropriate value, It is desirable to set the return time to an appropriate value.
[0004]
However, in the conventional one, the set heating time is obtained only by the temperature of the hot water before it is heated by the heating means without considering the usage amount of the hot water stored in the hot water storage tank. For this reason, the return time does not become an appropriate value, and consumption of the hot water circulation means and heating means may be accelerated, or the amount of heat of the excessive hot water stored may be wasted.
That is, the return time is short when the amount of hot water stored in the hot water storage tank is actually used is large, and conversely, it is long when the amount of use is small.
[0005]
The present invention has been made paying attention to such a point, and its purpose is to reduce the temperature stratification disturbance by making the return time from when the heating operation is stopped to when the hot water storage is insufficient to an appropriate value. Another object of the present invention is to provide a hot water storage type hot water supply heat source device that can suppress, improve durability of the hot water circulation means and the heating means, and prevent unnecessary cooling of hot water in the hot water storage tank.
[0006]
[Means for Solving the Problems]
In order to achieve this object, according to the first aspect of the present invention, the control means obtains a return time from when the heating operation is stopped until the hot water storage is insufficient, and based on the obtained return time. Thus, the set heating time is corrected so that the return time becomes an appropriate value.
In other words, the actual return time from when the heating operation is stopped to when the hot water storage is insufficient is obtained, and when the determined return time is short so that the determined return time is an appropriate value, the set heating time is increased, Since the set heating time is corrected by shortening the set time when the calculated return time is long, the return time can be set to an appropriate value, and disturbance of temperature stratification can be suppressed, and the durability of the hot water circulating means and heating means can be reduced. And the useless cooling of the hot water in the hot water storage tank can be prevented.
[0007]
According to the second aspect of the present invention, the hot water supply state detection means for detecting whether the hot water in the hot water storage tank is hot water being supplied or not is provided through the hot water supply passage, and the control means is provided. When the hot water supply state detecting means detects that hot water is being supplied, it performs surplus hot water control, and when it is detected that hot water is not being supplied, it starts heating operation when a hot water shortage state is detected, and is set. When the hot water storage state is detected, the normal hot water storage control for stopping the heating operation is executed.
[0008]
In other words, during non-hot water supply, the amount of hot water stored in the hot water storage tank, that is, the lower end position of the formation range of the high temperature portion in the temperature stratification of hot water formed in the hot water storage tank does not fluctuate in a short time. When the hot water storage shortage state is detected, the heating operation is started, and when the hot water storage state is detected, the heating operation is stopped. Unnecessary cooling can be prevented by not storing hot water excessively in the hot water storage tank.
In addition, during hot water supply, the amount of hot water stored in the hot water storage tank, that is, the lower end position of the formation range of the high temperature portion in the temperature stratification of hot water formed in the hot water storage tank fluctuates in a short time. Thus, it is possible to improve the durability of the hot water circulating means and the heating means while suppressing disturbance of temperature stratification.
Accordingly, the surplus hot water storage control is executed only when the return time is short, so that excessive hot water is not stored in the hot water storage tank, thereby further preventing unnecessary cooling and improving the durability of the hot water circulation means and the heating means. be able to.
[0009]
According to the third aspect of the present invention, the flow rate adjusting means for adjusting the flow rate of the hot water heated by the heating means is provided, and the control means does not pass until the set time elapses after the operation is started. The flow rate adjusting means is configured to adjust to the decreasing side of the hot water flow rate.
In other words, when the hot water is heated by the heating means, it takes a little time to start the operation, so at the start of the operation from the start of the operation until the set time elapses, the hot water flow rate decreases. By adjusting the flow rate adjusting means, the hot water can be sufficiently heated by the heating means, and the temperature stratification formed in the hot water storage tank can be maintained.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An example in which the hot water storage type hot water supply heat source device according to the present invention is applied to an engine heat pump type air conditioning and hot water supply system will be described with reference to the drawings.
As shown in FIG. 1, this engine heat pump type air conditioning and hot water supply system is provided with an engine heat pump type air conditioner C that cools and heats the room. In addition, the heating part K as a heating means for heating the hot water in the hot water storage tank 1 while using the auxiliary heat source, and the external heat radiating part H for radiating heat using the hot water in the hot water storage tank 1 are respectively hot water in the hot water storage tank 1. The circulation pump 3 is operated to circulate hot water in the hot water storage tank 1 through the circulation path 2. That is, the circulating path 2 and the circulation pump 3 constitute hot water circulation means J.
And the control apparatus S as a control means which controls operation | movement of the engine heat pump type | formula air conditioning apparatus C, operation | movement of the heating part K, the circulation pump 3, etc. is provided.
[0011]
The hot water storage tank 1 is connected to a hot water supply path 4 for supplying water to the hot water storage tank 1 from the bottom using tap water pressure, and is connected to a hot water supply path 6 for supplying hot water to a hot water tap 5 such as a bathroom or kitchen from the upper part. The amount of water used by the hot water tap 5 is supplied from the water supply channel 4 to the hot water storage tank 1.
Further, the hot water supply passage 6 is provided with a water flow switch FS as hot water supply state detecting means that is turned ON when the set flow rate is exceeded, and the hot water flowing through the circulation passage 2 is returned to the hot water storage tank 1 or the hot water storage tank. In order to take out the hot water in 1 to the circulation path 2, the circulation path 2 and the hot water storage tank 1 are connected in communication at three locations, ie, an upper part, an intermediate part, and a bottom part of the hot water storage tank 1.
[0012]
In other words, the upper part of the hot water storage tank 1 is provided with an upper connection path 7a for connecting the circulation path 2 and the hot water storage tank 1, and an upper three-way valve 7b at the connection point between the circulation path 2 and the upper connection path 7a. An intermediate portion connection path 8a for connecting the circulation path 2 and the hot water storage tank 1 is provided at the intermediate portion of the hot water storage tank 1, and an intermediate portion three-way valve 8b is provided at a connection point between the circulation path 2 and the intermediate portion connection path 8a. The bottom of the hot water storage tank 1 is provided with a bottom connection path 9a for connecting the circulation path 2 and the hot water storage tank 1, and a bottom three-way valve 9b at a connection point between the circulation path 2 and the bottom connection path 9a. Yes.
Therefore, by switching each of the three-way valves 7b, 8b, 9b, the hot water flowing through the circulation path 2 is returned to the hot water storage tank 1, or the hot water in the hot water storage tank 1 is taken out to the circulation path 2. Yes.
[0013]
Further, when hot water is stored in the hot water storage tank 1, the water at the bottom of the hot water storage tank 1 is taken out to the circulation path 2 through the bottom connection path 9a, and the circulation path 2 is heated while the water is heated by the heating section K. The heated hot water is returned to the upper part of the hot water storage tank 1 through the upper connection path 7a to form a temperature stratification and store hot water.
And it is the set hot water storage state in which the lower end position of the formation part of the high temperature part in the temperature stratification of the hot water formed in the hot water storage tank 1 is lower than a set value, or is a hot water shortage state above the set value. A hot water storage temperature thermistor 10 is provided as temperature detecting means for detecting the temperature by detecting the temperature of the hot water. The installation location of the hot water storage temperature thermistor 10 is located above the connection location between the hot water storage tank 1 and the intermediate connection path 8a.
[0014]
The heating unit K is heated from the upper side toward the lower side in the hot water circulation direction in the circulation path 2 by using the exhaust heat in the heat pump type air conditioning, and is heated using the engine exhaust heat. The second heat exchanging part 13 and the third heat exchanging part 14 heated by the combustion device N provided with the burner B as the auxiliary heat source are provided in order, and the circulation path 2 is provided in each of the heat exchanging parts 12, 13, 14. The flowing hot water is heated by heat exchange.
In the present embodiment, the external heat radiating unit H is provided with a bath-heating heat exchanging unit 15 and a floor heating heat exchanging unit 16 in this order from the upper side to the lower side in the hot water circulation direction in the circulation path 2. It is configured. In other words, the hot water in the bathtub is supplied to the bath heat exchanger 15 through the bath recirculation circuit 15b by the operation of the bath recirculation pump 15a, and the hot water in the bathtub not shown in the figure is replenished by heat exchange. I am able to whisper. Further, the floor heating heat exchanging section 16 exchanges heat with the heat medium flowing through the floor heating circulation path 16b by the operation of the floor heating circulation pump 16a so that the floor heating can be performed.
[0015]
Incidentally, the first heat exchange section 12 is provided in the circulation path 2 between the bottom three-way valve 9b and the intermediate three-way valve 8b, and the second heat exchange section 13 and the third heat exchange section 14 are three-way intermediate sections. The circulation path 3 between the valve 8b and the upper three-way valve 7b is provided, and the circulation pump 3 is provided in the circulation path 2 between the third heat exchange section 14 and the upper three-way valve 7b. A bath-heating heat exchanging section 15 and a floor heating heat exchanging section 16 are provided in the circulation path 2 between the upper three-way valve 7b and the bottom three-way valve 9b.
[0016]
The engine heat pump air conditioner C includes an indoor unit Ui and an outdoor unit Uo, and the indoor unit Ui and the outdoor unit Uo are connected by a refrigerant pipe r.
The indoor unit Ui is provided with an expansion valve Vex, an indoor heat exchanger Ni, and an indoor air conditioner blower Fi that sends air temperature-controlled by the indoor heat exchanger Ni to an air-conditioning target area.
The outdoor unit Uo includes a gas engine GE, a radiator RG, a radiator fan RF, a compressor Cmp, an accumulator Ac, a four-way valve Vx, an outdoor heat exchanger No, and an outdoor air conditioner that ventilates the outdoor air to the outdoor heat exchanger No. A blower Fo is provided. In addition, a cooling water path w for circulating cooling water for cooling the gas engine GE with the radiator RG is provided, and a radiator pump RP is provided in the cooling water path w.
[0017]
The engine heat pump air-conditioning apparatus C is configured to be able to selectively switch between a cooling operation and a heating operation by operating the compressor Cmp by the gas engine GE and switching the four-way valve Vx. Further, the engine heat pump air conditioner C has a first exhaust that switches between a heating state in which the exhaust heat in the cooling operation is supplied to the first heat exchange unit 12 by the refrigerant and an exhaust heat state that is supplied to the outdoor heat exchanger No. A heat switching mechanism 17, a second exhaust heat switching mechanism 18 that switches between a heating state in which the exhaust heat of the gas engine is supplied to the second heat exchanging unit 13 by cooling water and an exhaust heat state in which the exhaust heat is supplied to the radiator RG and exhausted. Is provided.
[0018]
Specifically, the first exhaust heat switching mechanism 17 includes a bypass refrigerant pipe 17a and a bypass refrigerant pipe connected to the refrigerant pipe r so that the outdoor heat exchanger No and the first heat exchange unit 12 are in parallel. The three-way valves 17b and 17c are provided at connection points between the 17a and the refrigerant pipe r.
In the heating state in which exhaust heat in the cooling operation is supplied to the first heat exchange unit 12 by the refrigerant, the refrigerant is the refrigerant pipe r, the bypass refrigerant pipe 17a, the first heat exchange unit 12, the bypass refrigerant pipe 17a, and the refrigerant pipe. They are supplied in the order of r. In the exhaust heat state in which the exhaust heat in the cooling operation is supplied to the outdoor heat exchanger No. by the refrigerant, the refrigerant is supplied in the order of the refrigerant pipe r, the outdoor heat exchanger No, and the refrigerant pipe r.
[0019]
The second exhaust heat switching mechanism 18 includes a bypass cooling water channel 18a connected to the cooling water channel w so that the radiator RG and the second heat exchanging unit 13 are in parallel, and a connection point between the bypass cooling water channel 18a and the cooling water channel w. The three-way valves 18b and 18c are provided respectively.
And in the heating state where gas engine exhaust heat is supplied to the 2nd heat exchanging part 13 with cooling water, cooling water is cooling water channel w, bypass cooling water channel 18a, 2nd heat exchanging part 13, bypass cooling water channel 18a, radiator The pump RP and the cooling water channel w are supplied in this order. In the exhaust heat state in which the exhaust heat from the gas engine is supplied to the radiator RG by the cooling water and exhausted, the cooling water is supplied in the order of the cooling water channel w, the radiator RG, the radiator pump RP, and the cooling water channel w.
[0020]
In the cooling operation, the indoor heat exchanger Ni is caused to function as an evaporator so that the temperature of the air supplied to the air-conditioning target area is cooled and the first exhaust heat switching mechanism 17 is switched to the exhaust heat state. When the outdoor heat exchanger No. functions as a condenser to dissipate heat to the outside air and the first exhaust heat switching mechanism 17 is switched to the heating state, the first heat exchange unit 12 passes the circulation path 2. Dissipates heat against flowing hot water.
Further, in the heating operation, the indoor heat exchanger Ni is caused to function as a condenser, the supply air to the air-conditioning target area is heated and temperature-controlled, and the outdoor heat exchanger No. is functioned as an evaporator so as to absorb heat from the outside air. I have to.
[0021]
In this way, when the cooling operation or the heating operation is performed, if the exhaust heat of the gas engine GE is recovered by the cooling water and the second exhaust heat switching mechanism 18 is switched to the exhaust heat state, the radiator When the second blower heat switching mechanism 18 is switched to the heated state, the second heat exchange unit 13 radiates heat to hot water flowing through the circulation path 2 by driving the blower RF and radiating heat in the radiator RG. It is configured as follows.
[0022]
More specifically, in the cooling operation, the high-pressure dry vapor refrigerant discharged from the compressor Cmp is supplied to the outdoor heat exchanger No via the four-way valve Vx, and the first exhaust heat switching mechanism 17 is in the exhaust heat state. When switched, it is condensed in this outdoor heat exchanger No. by heat exchange with the outside air.
[0023]
And the condensation process passage refrigerant | coolant sent out from the outdoor heat exchanger No as a condenser is supplied to indoor heat exchanger Ni via the expansion valve Vex, and heat exchange with air to be cooled in this indoor heat exchanger Ni Is evaporated.
Thereafter, the low-pressure dry vapor refrigerant sent from the indoor heat exchanger Ni as an evaporator is returned to the suction port of the compressor Cmp through the four-way valve Vx and the accumulator Ac. In this way, the room that is the cooling target area is cooled.
[0024]
As for the heating operation, the high-pressure dry vapor refrigerant discharged from the compressor Cmp is supplied to the indoor heat exchanger Ni through the four-way valve Vx, and heat exchange with the air to be heated is performed in the indoor heat exchanger Ni. Condense.
[0025]
And the condensation composition passage refrigerant sent out from indoor heat exchanger Ni as a condenser is supplied to outdoor heat exchanger No via expansion valve Vex, and is evaporated by heat exchange with outside air in this outdoor heat exchanger No. Let
Thereafter, the low-pressure dry vapor refrigerant sent from the outdoor heat exchanger No. as the evaporator is returned to the suction port of the compressor Cmp through the four-way valve Vx and the accumulator Ac. In this way, the room that is the heating target area is heated.
[0026]
As shown in FIG. 2, the control device S includes a hot water supply controller TC for controlling the operation of the hot water storage tank 1 such as the combustion device N, the circulation pump 3, and the three-way valves 7b, 8b, 9b, and an engine heat pump type air conditioner. The controller RC for the air conditioning apparatus which controls the driving | operation of C is comprised, This controller TC for hot water supply and the controller RC for air conditioning apparatus are comprised so that communication is possible.
[0027]
That is, the hot water supply controller TC is configured to control the operations of the circulation pump 3, the combustion device N, and the three-way valves 7b, 8b, and 9b based on a command from the hot water supply operation device KS, and the controller RC for the air conditioning device Is configured to control operations of the gas engine GE, the first exhaust heat switching mechanism 17, and the second exhaust heat switching mechanism 18 based on a command from the air conditioning operating device RS.
The air conditioner controller RC executes the cooling operation or the heating operation based on a command from the air conditioner operating device RS, and switches between the first exhaust heat switching mechanism 17 and the second exhaust heat switching mechanism 18. It is configured as follows.
[0028]
The hot water storage controller TC is connected with extra hot water storage processing for storing hot water in the hot water storage tank 1 during hot water supply, normal hot water storage processing for storing hot water in the hot water storage tank 1 during non-hot water supply, and heat dissipation requirements in the external heat radiating section H. Each of the heat radiation processes for radiating heat at the external heat radiation part H is executed.
In the state where the operation is commanded by the hot water supply operating device KS, the surplus hot water storage process starts the heating operation when the hot water supply is detected by the water flow switch FS, and when the hot water shortage state is detected, the set hot water storage state The excess hot water storage control is performed to stop the heating operation when the set heating time has elapsed since the detection is detected, and the return time from the stop of the heating operation to the shortage of hot water storage is obtained and obtained. Based on the return time, a process for correcting the set heating time is performed so that the return time becomes an appropriate value.
[0029]
More specifically, in the state where operation is commanded by the hot water supply operating device KS, when the hot water storage shortage state is detected in the state where the water flow switch FS is turned on and the hot water supply is detected, that is, If the temperature detected by the hot water storage temperature thermistor 10 is lower than the set temperature, the bottom three-way valve 9b is set so as to operate the circulation pump 3 and take out water at the bottom of the hot water storage tank 1 to the circulation path 2 as shown in FIG. By switching, the water at the bottom of the hot water storage tank 1 is circulated while being heated by the heating unit K.
Then, for example, when a set time for sufficiently heating the hot water flowing through the circulation path 2 has elapsed, or when the temperature of the hot water in the circulation path 2 becomes equal to or higher than the set temperature, the hot water flowing through the circulation path 2 is stored. The upper three-way valve 7b is switched so as to return to the upper part of the tank 1, and the hot water is returned to the upper part of the hot water storage tank 1 to store the hot water.
[0030]
Thus, when the hot water storage shortage state is detected, the heating operation by the heating unit K, the circulation path 2, and the circulation pump 3 is started, and the hot water storage state is set, that is, the temperature detected by the hot water temperature thermistor 10 is detected. When the set heating time elapses after it is detected that the temperature is equal to or higher than the set temperature, the heating operation by the heating unit K, the circulation path 2, and the circulation pump 3 is stopped, and excessive hot water is stored in the hot water storage tank 1.
Then, after stopping the heating operation by the heating unit K, the circulation path 2, and the circulation pump 3, the return time until the hot water shortage state is detected again is obtained, and based on the obtained return time, The set heating time is corrected so that the return time becomes an appropriate value.
[0031]
That is, a return time t2 from when the heating operation is stopped until the hot water shortage state is detected is obtained by a timer, and based on the set heating time t1, the return time t2, and the appropriate value ts of the return time, 1], a new set heating time T1 is obtained. When a shortage of hot water storage is detected again, the above-described control operation is repeated based on the newly obtained set heating time T1.
In addition, in the following [Equation 1], for the convenience of distinguishing between the newly determined set heating time and the set heating time in which the heating operation is actually performed, different symbols are given for the sake of convenience. And set heating time t1.
[0032]
[Expression 1]

[0033]
Note that the method for obtaining the set heating time is not limited to the above [Equation 1], and may be obtained by other calculations. Based on the return time obtained by the timer, the return time is set to an appropriate value. As long as the set heating time is corrected, it is sufficient. In this way, the set heating time is corrected so that the return time becomes an appropriate value, so that the heating operation is not frequently started and stopped, and the disturbance of temperature stratification in the heating operation is suppressed. Further, the durability of the hot water circulation means and the heating means can be improved, and it is possible to prevent the hot water stored in the hot water storage tank 1 from being excessively cooled.
[0034]
In the normal hot water storage process, in the state where the operation is commanded by the hot water supply operating device KS, if the hot water supply is insufficient by the water flow switch FS, the heating operation is started when the insufficient hot water storage state is detected. When it is detected that the heating operation is detected, a process for stopping the heating operation is executed.
More specifically, in the state where the operation is commanded by the hot water supply operating device KS, when the hot water storage shortage state is detected in the state where the water flow switch FS is turned off and the non-hot water supply is detected, that is, If the temperature detected by the hot water storage temperature thermistor 10 is lower than the set temperature, the bottom three-way valve 9b is set so as to operate the circulation pump 3 and take out water at the bottom of the hot water storage tank 1 to the circulation path 2 as shown in FIG. By switching, the water at the bottom of the hot water storage tank 1 is circulated while being heated by the heating unit K.
[0035]
Then, for example, when a set time for sufficiently heating the hot water flowing through the circulation path 2 has elapsed, or when the temperature of the hot water in the circulation path 2 becomes equal to or higher than the set temperature, the hot water flowing through the circulation path 2 is stored. The upper three-way valve 7b is switched so as to return to the upper part of the tank 1, and the hot water is returned to the upper part of the hot water storage tank 1 to store the hot water.
Thus, when the hot water storage shortage state is detected, the heating operation by the heating unit K, the circulation path 2, and the circulation pump 3 is started, and the hot water storage state is set, that is, the temperature detected by the hot water temperature thermistor 10 is detected. Is detected to be equal to or higher than the set temperature, the heating operation by the heating unit K, the circulation path 2 and the circulation pump 3 is stopped, and hot water is stored in the hot water storage tank 1.
[0036]
As described above, when the hot water is being supplied, the excess hot water storage process is executed, and when the hot water is not being supplied, the normal hot water storage process is executed. Therefore, while further preventing unnecessary cooling of the hot water in the hot water storage tank, Disturbance of temperature stratification in the tank can be suppressed, and durability of the hot water circulating means and heating means can be improved.
[0037]
The heat radiating process executes a process of radiating heat in the external heat radiating part H in response to a heat radiating request in the external heat radiating part H in a state where the set hot water storage state is detected.
More specifically, in the state where the hot water storage state is set, that is, the temperature detected by the hot water storage temperature thermistor 10 is detected to be lower than the set temperature, bath reheating is instructed by the hot water supply operating device KS. When the operation of the floor heating device is started, or both are performed, the bath recirculation pump 15a and the floor heating circulation pump 16a are operated, and the execution of the heat dissipation process is requested. Then, the circulation pump 3 is operated, the intermediate three-way valve 8b is switched so as to take out the intermediate hot water in the hot water storage tank 1 to the circulation path 2, and the hot water in the circulation path 2 is returned to the bottom of the hot water storage tank 1 for the bottom. The three-way valve 9b is switched.
And as shown in FIG. 4, in one or both of which heat dissipation is requested | required in the heat exchanging part 15 and the heat exchange part 16 for a floor heating using the hot water of the intermediate part of the hot water storage tank 1 as a heat source The heat is dissipated, and the hot water after heat dissipation is returned to the bottom of the hot water storage tank 1.
[0038]
Further, the operation of the heating unit K will be described. When the engine heat pump type air conditioner C is performing the cooling operation and the first exhaust heat switching mechanism 17 is switched to the heating state, the first heat exchange unit 12, the hot water flowing through the circulation path 2 can be heated using the exhaust heat in the heat pump type air conditioning as a heat source.
In addition, when the engine heat pump type air conditioner C is in operation and the second exhaust heat switching mechanism 18 is switched to the heating state, the second heat exchange unit 13 uses the gas engine exhaust heat as a heat source as a circulation path. It becomes possible to heat the hot water flowing through 2.
And in the 3rd heat exchange part 14, the combustion apparatus N is operated and the hot water flowing through the circulation path 2 by combustion of the burner B can be heated.
[0039]
In this way, heating can be performed in each of the first to third heat exchanging units 12, 13, and 14, but depending on the hot load in the hot water storage tank 1 and the heating load on the external heat radiating unit H, Execution of the heating operation in the heat exchange unit 12, the second heat exchange unit 13, and the third heat exchange unit 14 is controlled.
That is, for example, when the heating load is large, such as at the start of operation, the first exhaust heat switching mechanism and the second exhaust heat switching mechanism are switched to the heating state, and combustion is performed by the burner B, whereby the first to third heats Heating is possible in all the heat exchanging parts of the exchanging parts 12, 13, and 14.
[0040]
Further, in normal times, heating in the first and second heat exchange units 12 and 13 is possible depending on the operating state of the engine heat pump type air conditioner C, so that heating is performed in the first and second heat exchange units 12 and 13. Whether or not the third heat exchanging unit 14 is heated by the combustion of the burner B by operating the combustion device N is determined.
That is, when the first and second heat exchanging units 12 and 13 are not heated by the operating state of the engine heat pump type air conditioner C, or when the first and second heat exchanging units 12 and 13 are heated, the hot water storage tank 1 is used. When the heating load for the hot water storage is insufficient, the combustion device N is operated to heat the third heat exchanging unit 14 by the combustion of the burner B, so that the hot load for the hot water storage tank 1 and the external heat radiation unit H is heated. The operation of the heating unit K is controlled so as to correspond to the above.
[0041]
The control operation of the control device S will be described based on the flowchart of FIG.
First, in a state where operation is instructed by the hot water supply operating device KS, the timer is reset, and the values stored as the set heating time t1 and the return time t2 are stored again as the appropriate value ts for the return time. Is initialized (step 1).
Then, the set heating time t1 is calculated by the above [Equation 1] (step 2). In addition, since t1 = t2 = ts in the initial stage of operation, the set heating time t1 is an appropriate value ts for the return time.
[0042]
Thereafter, when the detected temperature TK of the hot water storage temperature thermistor 10 is lower than the set temperature and a hot water storage shortage state is detected, hot water storage processing is executed (steps 3 and 4). That is, the circulation pump 3 is operated, the bottom three-way valve 9b is switched so that the water at the bottom of the hot water storage tank 1 is taken out to the circulation path 2, and the water at the bottom of the hot water storage tank 1 is circulated while being heated by the heating part K. Let
Then, for example, when a set time for sufficiently heating the hot water flowing through the circulation path 2 has elapsed, or when the temperature of the hot water in the circulation path 2 becomes equal to or higher than the set temperature, the hot water flowing through the circulation path 2 is stored. The upper three-way valve 7b is switched so as to return to the upper part of the tank 1, and the hot water is returned to the upper part of the hot water storage tank 1 to store the hot water.
[0043]
In this way, when hot water is stored in the hot water storage tank 1 and the detected temperature TK of the hot water temperature thermistor 10 is equal to or higher than the set temperature and it is detected that the hot water storage state is set, whether or not the water flow switch FS is turned on. If the timer count is 0, the timer starts counting, and the time after the fact that the set hot water storage state is detected is measured by the timer (step 3). , 5-7).
Then, when the set heating time t1 obtained by the count of the timer is reached, that is, when the set heating time t1 has elapsed since it was detected that the set hot water storage state has been reached, the heating operation by the heating unit K and the circulation pump 3 is stopped. The process is executed, the set heating time t1 is stored, the timer is reset, the timer is started again, and the time after the heating operation is stopped is measured by the timer (steps 8 to 11).
[0044]
The stop process will be described in detail. If the circulation pump 3 is in operation, the operation is stopped and the hot water in the circulation path 2 is not heated by the first to third heat exchange units 12, 13, 14. When the first exhaust heat switching mechanism 17 and the second exhaust heat switching mechanism 18 are switched to the heating state, the first exhaust heat switching mechanism 17 and the second exhaust heat switching mechanism 18 are switched to the exhaust heat state, and if the burner B is in combustion, the combustion in the burner B is stopped.
[0045]
When the water flow switch FS is turned on and hot water is being supplied, if a hot water shortage state in which the detection temperature TK of the hot water temperature thermistor 10 is lower than the set temperature is detected, the timer counts, that is, the heating operation is stopped. A return time t2 until the hot water storage is insufficient is stored (steps 12 to 14).
Thus, when the return time t2 is obtained by the timer, the set heating time t1 is obtained by the above [Equation 1] based on the obtained return time t2 so that the return time t2 becomes an appropriate value ts. (Step 3).
[0046]
The heating operation is started as the hot water shortage state is detected. However, when the hot water storage state is detected and the water flow switch FS is OFF and the hot water is not supplied (steps 3 to 5), the heating operation is started. Stop processing for stopping the heating operation by the part K and the circulation pump 3 is executed (step 15).
In this way, when hot water is being supplied, the hot water storage process is continuously performed until the set heating time has elapsed since it has been detected that the hot water is being set, and when it is not hot water, the hot water is being set. If this is detected, the heating operation is stopped and the hot water storage process is terminated.
[0047]
And after it is detected that the set hot water storage state is detected and the stop process is executed, bath reheating is instructed by the instruction of the hot water supply operating device KS, or the operation of the floor heating device is started, or When both are performed and execution of the heat dissipation process is requested, the heat dissipation process is executed (steps 15 to 17).
That is, by operating the circulation pump 3, the intermediate three-way valve 8b is switched so that the hot water in the hot water storage tank 1 is taken out into the circulation path 2, and the bottom three-way valve 9b is returned so that the hot water in the circulation path 2 is returned into the hot water storage tank 1. The hot water in the intermediate portion of the hot water storage tank 1 is used as a heat source, and heat is radiated in one or both of the heat exchanging portion 15 for bathing and the heat exchanging portion 16 for floor heating.
[0048]
In addition, when the bath reheating operation is not instructed by the instruction of the hot water supply operating device KS, and the execution of the heat dissipation process is not requested in the state where the operation of the floor heating device is stopped, the detected temperature of the hot water storage temperature thermistor 10 is detected. Hot water storage until TK becomes less than the set temperature, or until the bath reheating is commanded by the command of the hot water supply operating device KS, or the operation of the floor heating device is started, and the execution of the heat dissipation process is required. A standby process for waiting for the execution of the process or the heat dissipation process is executed (steps 16 and 18).
That is, if the circulation pump 3 is operating, the operation is stopped, and if the first exhaust heat switching mechanism 17 and the second exhaust heat switching mechanism 18 are switched to the heating state, the operation is switched to the exhaust heat state, and the burner B Is burning, the combustion in the burner B is stopped.
[0049]
[Another embodiment]
(1) In the above embodiment, the hot water storage process is executed when hot water is being supplied, and the normal hot water storage process is executed when non-hot water is being supplied. Regardless of whether or not there is, the excess hot water storage process may always be executed.
[0050]
(2) In the above embodiment, the hot water extracted from the bottom of the hot water storage tank 1 is heated by the heating unit K without adjusting the flow rate. For example, as shown by the phantom line in FIG. The proportional valve 11 is provided as a flow rate adjusting means for adjusting the flow rate of the hot water heated by the heating unit K, and until the set time elapses after the operation is started by the hot water supply operating device KS. You may make it adjust so that the flow volume of hot water may decrease by squeezing.
Further, the flow rate adjusting means is not limited to the proportional valve 11, and the hot water flow rate may be adjusted by controlling the rotational speed of the circulation pump 3.
[0051]
(3) In the above embodiment, the water flow switch FS detects whether hot water is being supplied or not hot water, but is not limited to the water flow switch FS and detects the flow rate. A flow sensor or the like may be used.
[0052]
(4) In the above-described embodiment, the heating unit K includes the first heat exchange unit 12 that uses exhaust heat in the heat pump type air conditioning system, the second heat exchange unit 13 that uses engine exhaust heat, and the combustion apparatus N that includes the burner B. Although it is configured by the third heat exchange unit 14 to be used, the configuration of the heating unit K may be plural or single, and various heating devices such as an electric heater can be applied.
[0053]
(5) In the above embodiment, hot water is stored in the hot water storage tank 1 and heat can be radiated in the external heat radiating portion H. However, only hot water storage in the hot water storage tank 1 may be performed.
That is, in the above embodiment, the circulation path 2 and the hot water storage tank 1 are connected to the hot water storage tank 1 without providing the intermediate connection path 8 a and the intermediate three-way valve 8 b provided in the intermediate part of the hot water storage tank 1. You may make it connect by communication in two places, an upper part and a bottom part.
[0054]
(6) In the above embodiment, an example in which the hot water supply apparatus according to the present invention is applied to an engine heat pump type air conditioning and hot water supply system is shown. It is also possible to adapt to a system that uses exhaust heat and generator exhaust heat.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of an engine heat pump type air conditioning and hot water supply system. FIG. 2 is a control block diagram of a control device. FIG. 3 is a schematic configuration diagram of an engine heat pump type air conditioning and hot water supply system. Fig. 5 is a flow chart showing the control operation of the control device.
DESCRIPTION OF SYMBOLS 1 Hot water storage tank 6 Hot water supply path 10 Temperature detection means 11 Flow rate adjustment means FS Hot water supply state detection means J Hot water circulation means K Heating means S Control means

Claims (3)

A hot water storage tank with a hot water supply channel connected to the top;
The hot water circulation is performed by heating the hot water taken out from the bottom of the hot water storage tank with a heating means so that the hot water is stored in the hot water tank by forming a temperature stratification. Hot water circulation means for circulating hot water in a state;
Whether the lower end position of the formation range of the high temperature portion in the temperature stratification of the hot water formed in the hot water storage tank is a set hot water storage state below the set value or a hot water shortage state above the set value. Temperature detection means for detecting the temperature of hot water,
Control means for controlling the heating operation for hot water storage by operating the heating means and the hot water circulation means based on the detection information of the temperature detection means,
The controller starts the heating operation when the hot water shortage state is detected, and executes the excess hot water control to stop the heating operation when the set heating time has elapsed since the hot water storage state is detected. A hot water storage type heat source heat source device configured to perform,
The control means obtains a return time from when the heating operation is stopped to when the hot water storage is insufficient,
A hot water storage type hot water supply heat source apparatus configured to correct the set heating time so that the return time becomes an appropriate value based on the determined return time. Hot water supply state detection means for detecting whether the hot water in the hot water storage tank is hot water supplied or not being supplied through the hot water supply path is provided, and the control means is provided by the hot water supply state detection means. When it is detected that hot water is being supplied, the surplus hot water storage control is executed, and when it is detected that hot water is not being supplied, the heating operation is started when the hot water shortage state is detected, and in the set hot water storage state, The hot water storage type hot water supply heat source device according to claim 1, configured to execute normal hot water storage control for stopping the heating operation when it is detected. A flow rate adjusting means for adjusting the flow rate of hot water heated by the heating means is provided;
The hot water storage system according to claim 1 or 2, wherein the control means is configured to adjust the flow rate adjusting means to a decreasing side of the hot water flow rate until a set time elapses after the operation is started. Hot water supply heat source device.

Images