JP4492423B2 - Hot water heater - Google Patents
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- JP4492423B2 JP4492423B2 JP2005120577A JP2005120577A JP4492423B2 JP 4492423 B2 JP4492423 B2 JP 4492423B2 JP 2005120577 A JP2005120577 A JP 2005120577A JP 2005120577 A JP2005120577 A JP 2005120577A JP 4492423 B2 JP4492423 B2 JP 4492423B2
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Description
本発明は、ヒートポンプサイクルを利用して湯を沸かし、貯湯タンク上部より積層状態で貯湯していく貯湯式温水器に関し、特に冷媒として二酸化炭素を用いたヒートポンプサイクルを利用した場合に有効なものである。 The present invention relates to a hot water storage water heater that boils hot water using a heat pump cycle and stores hot water in a stacked state from the upper part of the hot water storage tank, and is particularly effective when a heat pump cycle using carbon dioxide as a refrigerant is used. is there.
従来、この種の貯湯式温水器に関し、ヒートポンプサイクルを用いて給湯用の液体を加熱し、その加熱された液体を給湯機本体の貯湯タンク上部より蓄え、貯湯タンク下部より加熱源であるヒートポンプ本体に戻し、貯湯タンク又はヒートポンプ本体に戻す液体の温度が貯湯温度より低い予め設定された所定温度になると、ヒートポンプ本体の加熱動作を停止し、使用湯量に基づいて貯湯タンクの沸き上げ湯量を変化させ、一方、貯湯タンクの残湯量が所定量以下になると、ヒートポンプ本体の加熱動作を開始するようにしたものがある（例えば特許文献１参照）。
しかしながら、加熱源としてヒートポンプサイクルを用いるものにおいては、温水を熱交換して加熱する冷媒−水熱交換器への給水温度が高くなると冷媒−水熱交換器での冷媒と温水との温度差が減少して加熱能力が低下する。 However, in the case of using a heat pump cycle as a heating source, when the feed water temperature to the refrigerant-water heat exchanger that heats hot water by exchanging heat increases, the temperature difference between the refrigerant and hot water in the refrigerant-water heat exchanger increases. Decreases and heating capacity decreases.
特に冷媒として二酸化炭素を用いたヒートポンプサイクルを利用した貯湯式温水器にあっては、ヒートポンプの高圧側圧力が高いため給水温度が高くなるとヒートポンプの運転効率（ＣＯＰ）の低下度合いが顕著になり、最適なＣＯＰでの運転が望まれている。 In particular, in a hot water storage water heater using a heat pump cycle using carbon dioxide as a refrigerant, since the high pressure side pressure of the heat pump is high, the degree of decrease in the operating efficiency (COP) of the heat pump becomes significant when the feed water temperature increases. Operation with the optimum COP is desired.
ここで、一般的にＣＯＰを上げるためには、沸き上げ温度を下げること、ヒートポンプサイクルを構成する冷媒−水熱交換器への流入水温を下げること、ヒートポンプサイクルを構成する圧縮機の運転停止回数を減少することが重要となる。 Here, generally, in order to raise COP, lowering the boiling temperature, lowering the temperature of the inflow water to the refrigerant-water heat exchanger constituting the heat pump cycle, the number of shutdowns of the compressor constituting the heat pump cycle It is important to reduce.
しかし、これらの要因は、いずれも湯量不足を生じてしまう不都合があり、単純に採用することはできない。 However, all of these factors have the disadvantage of causing a shortage of hot water and cannot be simply adopted.
そこで本発明は、ヒートポンプサイクルを構成する冷媒−水熱交換器への流入水温を抑えつつ、必要最小限の貯湯量を確保することで、最適なＣＯＰを確保しつつ湯量不足の解消を図ることを目的とする。 In view of this, the present invention aims to solve the shortage of hot water while ensuring the optimum COP by securing the minimum required hot water storage amount while suppressing the temperature of the inflow water to the refrigerant-water heat exchanger constituting the heat pump cycle. With the goal.
前記従来の課題を解決するため本発明の貯湯式温水器は、貯湯タンクと、前記貯湯タンクの下部と上部を連通してタンク下部の水を流通させる沸き上げ配管と、前記沸き上げ配
管に配設した沸き上げポンプと、前記沸き上げ配管の途中に配設して沸き上げポンプで供給される水をヒートポンプサイクルを利用して加熱する加熱手段と、前記加熱手段に供給される水温を検出する入水温検出器と、前記貯湯タンクの所定高さにおける水温を検出する残湯量検出器と、前記残湯量検出器で検出される水温より前記貯湯タンク内に積層状態で貯湯されているかどうかを判定する積層貯湯判定手段と、外気温度を検出する外気温検出器と、前記加熱手段を制御して沸き上げ動作を行う制御手段と、前記制御手段に運転条件を入力する操作手段とを備え、前記操作手段により予め設定された沸き上げ条件に基づいて自動的に沸き上げ動作を行うおまかせ運転モードと、使用者が任意に沸き上げ条件を設定して沸き上げ動作を行う手動運転モードとに切り替えることができる貯湯式温水器であって、前記制御手段は、第１の所定時間帯にタンク全量を沸き上げる全量沸き上げ運転モードと、第２の所定時間帯に前記残湯検出器で所定残湯量になったことを検出した場合に沸き上げ動作を開始する湯切れ沸き上げ運転モードを有し、前記操作手段によりおまかせ運転モードに切り替えられた場合、前記全量沸き上げ運転モードは、前記積層貯湯判定手段と、前記入水温検出器と、前記残湯量検出器からの信号により前記加熱手段の動作を停止するようにし、前記操作手段により手動運転モードに切り替えられた場合、前記全量沸き上げ運転モードは、前記入水温検出器からの信号により前記加熱手段の動作を停止するようにし、前記加熱手段の動作停止条件を外気温度に基づき設定するようにしたことを特徴とする。
In order to solve the above-described conventional problems, a hot water storage water heater according to the present invention includes a hot water storage tank, a heating pipe that communicates a lower part and an upper part of the hot water storage tank and distributes water in the lower part of the hot water tank, and the heating pipe. A heating pump provided; heating means disposed in the middle of the heating pipe for heating water supplied by the boiling pump using a heat pump cycle; and temperature of water supplied to the heating means is detected. An incoming water temperature detector, a remaining hot water amount detector that detects a water temperature at a predetermined height of the hot water storage tank, and whether or not hot water is stored in the hot water storage tank in a stacked state from the water temperature detected by the remaining hot water amount detector Laminating hot water storage determining means, an outside air temperature detector for detecting the outside air temperature, control means for controlling the heating means to perform a boiling operation, and operating means for inputting operating conditions to the control means. Switching between the automatic operation mode in which the boiling operation is automatically performed based on the boiling condition preset by the operation means and the manual operation mode in which the user arbitrarily sets the boiling condition and performs the boiling operation. The hot water storage type hot water heater is capable of performing a full-boiling operation mode in which the whole tank is boiled in a first predetermined time zone, and a predetermined remaining amount in the remaining hot water detector in a second predetermined time zone. A hot water boiling operation mode that starts a boiling operation when it is detected that the amount of hot water has been reached, and when switched to the entrusted operation mode by the operating means, the total amount boiling operation mode is The operation of the heating unit is stopped by a signal from the determination unit, the incoming water temperature detector, and the remaining hot water amount detector, and the operation unit switches to the manual operation mode. In the case of replacement, the full-boiling operation mode is such that the operation of the heating means is stopped by a signal from the incoming water temperature detector, and the operation stop condition of the heating means is set based on the outside air temperature. It is characterized by that.
本発明によれば、自動的に沸き上げ動作を行うおまかせ運転モードにおいては、ヒートポンプサイクルを利用した加熱手段に供給される水温を可能な限り下げた状態で加熱動作を行うことができ、特にヒートポンプサイクルを加熱源として利用する場合に、冷媒−水熱交換器への流入水温を下げることができ、最適なＣＯＰでの運転が可能になり、また貯湯タンク内に積層状態でお湯が蓄えられている場合は加熱動作を行わないように制限しているため、圧縮機の運転停止回数を減少することができる。 According to the present invention, in the automatic operation mode in which the boiling operation is automatically performed, the heating operation can be performed in a state where the water temperature supplied to the heating means using the heat pump cycle is lowered as much as possible. When the cycle is used as a heating source, the temperature of water flowing into the refrigerant-water heat exchanger can be lowered, operation at an optimal COP is possible, and hot water is stored in a hot water storage tank in a stacked state. Since the heating operation is limited so as not to be performed, the number of compressor shutdowns can be reduced.
また本発明によれば、夜間時間帯の全量沸き上げ運転を極力抑えるため、無駄な貯湯量を保持することがなく、放熱によるロスも減少することができ、かつ、湯量が足りないと判断したときは、湯切れ沸き上げ運転により昼間時間帯に運転することで必要最小限の湯量を確保して湯量不足の解消を図ることができる。 Further, according to the present invention, it is determined that the amount of hot water stored in the night time zone can be suppressed as much as possible, so that a wasteful amount of hot water is not stored, loss due to heat radiation can be reduced, and the amount of hot water is insufficient. In some cases, it is possible to secure the minimum amount of hot water and to solve the shortage of hot water by operating during the daytime by hot water boiling operation.
また、使用者が任意に条件を設定して沸き上げ動作を行う手動運転モードにおいては、湯量確保を優先した加熱動作を行うことができ、湯量不足の解消を図ることができる。 Further, in the manual operation mode in which the user arbitrarily sets the conditions and performs the boiling operation, the heating operation giving priority to securing the hot water amount can be performed, and the lack of the hot water amount can be solved.
そして、効率的な運転を重視したおまかせ運転モードと、湯量確保を重視した手動運転モードを操作手段により任意に切り替えることができ、使い勝手の向上を図ることができる。 Then, the automatic operation mode that places importance on efficient operation and the manual operation mode that places importance on ensuring the amount of hot water can be arbitrarily switched by the operating means, and the usability can be improved.
さらに、外気温度に基づいて加熱動作の停止条件を変更するようにしているため、季節により異なる使用湯量に応じて最適な沸き上げ動作を確保することができる。 Furthermore, since the stop condition of the heating operation is changed based on the outside air temperature, an optimum boiling operation can be ensured according to the amount of hot water used that varies depending on the season.
本発明の第１の実施の形態による貯湯式温水器は、貯湯タンクと、前記貯湯タンクの下部と上部を連通してタンク下部の水を流通させる沸き上げ配管と、前記沸き上げ配管に配設した沸き上げポンプと、前記沸き上げ配管の途中に配設して沸き上げポンプで供給される水をヒートポンプサイクルを利用して加熱する加熱手段と、前記加熱手段に供給される水温を検出する入水温検出器と、前記貯湯タンクの所定高さにおける水温を検出する残湯量検出器と、前記残湯量検出器で検出される水温より前記貯湯タンク内に積層状態で貯湯されているかどうかを判定する積層貯湯判定手段と、外気温度を検出する外気温検出器と
、前記加熱手段を制御して沸き上げ動作を行う制御手段と、前記制御手段に運転条件を入力する操作手段とを備え、前記操作手段により予め設定された沸き上げ条件に基づいて自動的に沸き上げ動作を行うおまかせ運転モードと、使用者が任意に沸き上げ条件を設定して沸き上げ動作を行う手動運転モードとに切り替えることができる貯湯式温水器であって、前記制御手段は、第１の所定時間帯にタンク全量を沸き上げる全量沸き上げ運転モードと、第２の所定時間帯に前記残湯検出器で所定残湯量になったことを検出した場合に沸き上げ動作を開始する湯切れ沸き上げ運転モードを有し、前記操作手段によりおまかせ運転モードに切り替えられた場合、前記全量沸き上げ運転モードは、前記積層貯湯判定手段と、前記入水温検出器と、前記残湯量検出器からの信号により前記加熱手段の動作を停止するようにし、前記操作手段により手動運転モードに切り替えられた場合、前記全量沸き上げ運転モードは、前記入水温検出器からの信号により前記加熱手段の動作を停止するようにし、前記加熱手段の動作停止条件を外気温度に基づき設定するようにしたものである。
The hot water storage type hot water heater according to the first embodiment of the present invention includes a hot water storage tank, a heating pipe that communicates a lower part and an upper part of the hot water storage tank and distributes water in the lower part of the hot water tank, and the heating pipe. A heating pump for heating the water supplied by the boiling pump by using a heat pump cycle, and an input for detecting the water temperature supplied to the heating means. A water temperature detector, a remaining hot water amount detector for detecting a water temperature at a predetermined height of the hot water storage tank, and a water temperature detected by the remaining hot water amount detector determine whether the hot water is stored in a stacked state in the hot water storage tank. Laminated hot water storage determination means, an outside air temperature detector for detecting the outside air temperature, control means for controlling the heating means to perform a boiling operation, and operation means for inputting operating conditions to the control means, Switching between the automatic operation mode in which the boiling operation is automatically performed based on the boiling condition preset by the operating means and the manual operation mode in which the user arbitrarily sets the boiling condition and performs the boiling operation The hot water storage hot water heater is capable of performing a full-boiling operation mode in which the entire tank is boiled in a first predetermined time zone, and a predetermined remaining hot water amount by the remaining hot water detector in a second predetermined time zone. When the hot water boiling operation mode is started to start the boiling operation when it is detected that the operation is switched to the entrusted operation mode by the operation means, the total amount boiling operation mode is determined as the stacked hot water storage determination. The operation of the heating means is stopped by a signal from the means, the incoming water temperature detector, and the remaining hot water amount detector, and the operation means switches to the manual operation mode. In this case, the full-boiling operation mode is such that the operation of the heating unit is stopped by a signal from the incoming water temperature detector, and the operation stop condition of the heating unit is set based on the outside air temperature. It is.
本実施の形態によれば、全量沸き上げ運転を行う場合に、冷媒−水熱交換器への流入水温を下げることができ、最適なＣＯＰでの運転が可能になり、また貯湯タンク内に積層状態でお湯が蓄えられている場合は加熱動作を行わないように制限しているため、圧縮機の運転停止回数を減少することができる。 According to the present embodiment, when performing the whole boiling operation, the temperature of the water flowing into the refrigerant-water heat exchanger can be lowered, the operation with the optimum COP is possible, and the layers are stacked in the hot water storage tank. When hot water is stored in a state, since the heating operation is limited so as not to be performed, the number of stoppages of the compressor can be reduced.
また、夜間時間帯の全量沸き上げ運転を極力抑えるため、無駄な貯湯量を保持することがなく、放熱によるロスも減少することができ、かつ、湯量が足りないと判断したときは、湯切れ沸き上げ運転により昼間時間帯に運転することで必要最小限の湯量を確保して湯量不足の解消を図ることができる。 In addition, in order to minimize the total amount boiling operation during night hours, wasteful hot water storage is not maintained, loss due to heat dissipation can be reduced, and when it is determined that there is not enough hot water, By operating in the daytime by boiling operation, it is possible to secure the minimum amount of hot water and to solve the shortage of hot water.
さらに、使用者が任意に条件を設定して沸き上げ動作を行う手動運転モードにおいては、湯量確保を優先した加熱動作を行うことができ、湯量不足の解消を図ることができる。 Furthermore, in the manual operation mode in which the user arbitrarily sets conditions and performs the boiling operation, a heating operation that prioritizes ensuring the amount of hot water can be performed, and the lack of hot water can be resolved.
そして、効率的な運転を重視したおまかせ運転モードと、湯量確保を重視した手動運転モードを操作手段により任意に切り替えることができ、使い勝手の向上を図ることができる。 Then, the automatic operation mode that places importance on efficient operation and the manual operation mode that places importance on ensuring the amount of hot water can be arbitrarily switched by the operating means, and the usability can be improved.
さらに、外気温度に基づいて加熱動作の停止条件を変更するようにしているため、季節により異なる使用湯量に応じて最適な沸き上げ動作を確保することができる。 Furthermore, since the stop condition of the heating operation is changed based on the outside air temperature, an optimum boiling operation can be ensured according to the amount of hot water used that varies depending on the season .
本発明の第２の実施の形態による貯湯式温水器は、積層貯湯判定手段は貯湯タンクの所定高さに配設された複数の残湯量検出器のうち、最下端部を除く残湯量検出器で検出される水温より判定するようにしたものである。 In the hot water storage type hot water heater according to the second embodiment of the present invention, the stacked hot water determination means is a remaining hot water amount detector excluding a lowermost end portion among a plurality of remaining hot water amount detectors arranged at a predetermined height of the hot water storage tank. This is determined from the water temperature detected in step (b).
本実施の形態によれば、簡単な構成で貯湯タンク内の湯温分布を検出し、積層状態で貯湯されているかどうかを容易に判断することができる。 According to the present embodiment, it is possible to easily determine whether or not hot water is stored in a stacked state by detecting the hot water temperature distribution in the hot water storage tank with a simple configuration.
本発明の第３の実施の形態による貯湯式温水器は、積層貯湯判定手段は、残湯量検出器で検出される水温が予め定めた判定値以上になったとき積層貯湯状態と判定し、前記判定値は、沸き上げ温度に応じて変更するようにしたものである。 In the hot water storage type hot water heater according to the third embodiment of the present invention, the stacked hot water determination means determines the stacked hot water storage state when the water temperature detected by the remaining hot water amount detector is equal to or higher than a predetermined determination value , The judgment value is changed according to the boiling temperature.
本実施の形態によれば、貯湯タンク内にどのような形態で貯湯されているかを容易に判断することができるとともに、沸き上げ温度に応じて判定値を変更するようにしているため、実使用形態に即した積層貯湯状態を判断することができる。 According to the present embodiment, it is possible to easily determine in what form the hot water is stored in the hot water storage tank, and the determination value is changed according to the boiling temperature. It is possible to determine the laminated hot water storage state suitable for the form.
本発明の第４の実施の形態による貯湯式温水器は、外気温度に応じて沸き上げ温度を変更するようにし、外気温度が低いとき沸き上げ温度を高く、外気温度が高いとき沸き上げ
温度を低くするようにしたものである。
The hot water storage type water heater according to the fourth embodiment of the present invention changes the boiling temperature according to the outside air temperature, and raises the boiling temperature when the outside air temperature is low, and increases the boiling temperature when the outside air temperature is high. It is designed to be low.
本実施の形態によれば、季節により異なる使用湯量に対応して、沸き上げ温度自体を変更すると共に、加熱動作の停止条件である積層貯湯状態の判定値も変更できることになり、使用実態に即した最適な湯量を確保するための沸き上げ動作を確保することができる。 According to the present embodiment, the boiling temperature itself can be changed in accordance with the amount of hot water used that varies depending on the season, and the judgment value of the stacked hot water storage state, which is the heating operation stop condition, can be changed. The boiling operation for ensuring the optimum amount of hot water can be ensured .
以下、本発明の一実施例について図面を用いて説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
図１は本発明の一実施例による貯湯式温水器の構成図である。 FIG. 1 is a configuration diagram of a hot water storage type water heater according to an embodiment of the present invention.
貯湯タンクユニット１は、貯湯タンク２、給湯管３、給水管４、沸上げ配管５、沸上げポンプ６、残湯量検出器７ａ〜７ｅ、制御手段８、積層貯湯判定手段９から構成され、貯湯タンク２の上部には給湯管３を、貯湯タンク２の下部には給水管４を有している。 The hot water storage tank unit 1 includes a hot water storage tank 2, a hot water supply pipe 3, a water supply pipe 4, a boiling pipe 5, a boiling pump 6, remaining hot water detectors 7a to 7e, a control means 8, and a laminated hot water storage judging means 9. A hot water supply pipe 3 is provided at the upper part of the tank 2, and a water supply pipe 4 is provided at the lower part of the hot water storage tank 2.
貯湯タンク２の下部と上部とは、沸上げ配管５によって連通され、貯湯タンク２下部の水は、沸上げポンプ６によって加熱手段１０に導かれ、その熱交換器１１によって加熱されて湯となり、貯湯タンク２上部に導かれる。給湯管３から給湯されると、それに伴い給水管４から貯湯タンク２内に水が給水され、貯湯タンク２内では、比重差から湯が上部、水が下部に分離し、湯が押し下げられる形で層をなして蓄積される。 The lower part and the upper part of the hot water storage tank 2 are communicated by a boiling pipe 5, and the water in the lower part of the hot water storage tank 2 is led to a heating means 10 by a boiling pump 6 and heated by the heat exchanger 11 to become hot water, It is guided to the upper part of the hot water storage tank 2. When hot water is supplied from the hot water supply pipe 3, water is supplied from the water supply pipe 4 into the hot water storage tank 2. In the hot water storage tank 2, the hot water is separated into the upper part and the water is separated into the lower part due to the difference in specific gravity. Accumulated in layers.
貯湯タンク２には、貯湯タンク２下部から上部の水温を検出する複数の残湯量検出器７ａ〜７ｅが設けられており、制御手段８にその検出信号が入るようになっている。制御手段８の中にある積層貯湯判定手段９は、残湯量検出器７ｂ〜７ｅの検出信号のうち、予め定めた検出信号により貯湯タンク２内の湯温を検出し、この検出された湯温と予め定めた第３判定値とを比較し、その比較結果により貯湯タンク２が積層貯湯状態であるかどうか判定する。 The hot water storage tank 2 is provided with a plurality of remaining hot water detectors 7 a to 7 e for detecting the water temperature at the upper part from the lower part of the hot water storage tank 2, and the detection signal is input to the control means 8. Laminated hot water storage determining means 9 in the control means 8 detects the hot water temperature in the hot water storage tank 2 based on a predetermined detection signal among the detection signals of the remaining hot water amount detectors 7b to 7e, and the detected hot water temperature. Is compared with a predetermined third determination value, and it is determined whether the hot water storage tank 2 is in the laminated hot water storage state based on the comparison result.
例えば、沸上げ温度が６５度の場合で、残湯量検出器７ｂ〜７ｅの温度すべての信号が６０度以上を検出すれば積層状態と判定可能であるが、７ｂの信号のみが６０度以上検出しても、積層状態であると判断できる。これは、湯温が高いほど比重が小さくなるという性質を利用し７ｂより上は、６０度以上と判断しているからである。 For example, if the boiling temperature is 65 degrees and the signals of all the remaining hot water detectors 7b to 7e detect 60 degrees or more, it is possible to determine the laminated state, but only the signal 7b is detected 60 degrees or more. Even so, it can be determined that the layers are stacked. This is because it is determined that the temperature above 7b is 60 degrees or more by utilizing the property that the specific gravity decreases as the hot water temperature increases.
なお、本実施例では積層状態で貯湯されているか否かを判定する温度は、沸き上げ温度に関係なく一定値として説明したが、沸き上げ温度に応じて変更してもよく、残湯検出器７ｂ〜７ｅに対応させて比較温度を個々に設定しても同様の効果を得られるものである。 In the present embodiment, the temperature for determining whether or not hot water is stored in a stacked state has been described as a constant value regardless of the boiling temperature, but may be changed according to the boiling temperature, and the remaining hot water detector Even if the comparative temperatures are individually set corresponding to 7b to 7e, the same effect can be obtained.
また、全量沸き上げ運転を行う第１の所定時間帯（深夜時間帯）以外の第２の所定時間帯（昼間時間帯）に残湯量検出器７ｅまたは７ｄが４５度を下回り、所定残湯量以下になったと判断される場合は、湯切れ沸上げ運転を行う。そして、湯切れ沸上げ運転を行った後、残湯量検出器７ｅまたは７ｄが例えば６０度以上になると運転を停止する。なお、沸上げ判定温度を４５度とし、沸上げ停止温度を６０度とすることでチャタリングを防止している。 In addition, the remaining hot water amount detector 7e or 7d falls below 45 degrees in the second predetermined time zone (daytime time zone) other than the first predetermined time zone (midnight time zone) in which the total amount boiling operation is performed, and is below the predetermined remaining hot water amount. When it is determined that the temperature has reached, the hot water boiling operation is performed. Then, after the hot water boiling operation is performed, the operation is stopped when the remaining hot water detector 7e or 7d reaches, for example, 60 degrees or more. Note that chattering is prevented by setting the boiling determination temperature to 45 degrees and the boiling stop temperature to 60 degrees.
熱交換器１１は、圧縮機１２、蒸発器１３、及び膨張弁１４とともに配管によって接続されてヒートポンプサイクルを構成している。このヒートポンプサイクルは、冷媒として二酸化炭素を用い、高圧側では臨界圧を越える状態で運転することが好ましい。このようなヒートポンプサイクルを用いることで、９０度に近い高温水を貯湯することができるとともに、レジオネラ菌などを考慮した６５度程度の温水の貯湯は高いＣＯＰで行うことができる。 The heat exchanger 11 is connected by piping together with the compressor 12, the evaporator 13, and the expansion valve 14 to constitute a heat pump cycle. This heat pump cycle preferably uses carbon dioxide as a refrigerant and is operated in a state exceeding the critical pressure on the high pressure side. By using such a heat pump cycle, hot water close to 90 degrees can be stored, and hot water storing about 65 degrees considering Legionella bacteria can be stored at a high COP.
熱交換器１１に至るまでの沸上げ配管５には入水温検出器１５ａが設けられ、熱交換器１１の出口側の沸上げ配管５には出湯温検出器１５ｂが設けられている。また、外気温度を検出するための外気温検出器１５ｃが設けられ、制御手段８にその情報が入力されている。本実施の形態では加熱手段１０に外気温検出器１５ｃを設けているが、貯湯タンク２側に設けてもよく、給水側から供給される水温の情報を用いても同様の効果が得られるものである。 A boiling water temperature detector 15 a is provided in the boiling pipe 5 leading to the heat exchanger 11, and a tapping temperature detector 15 b is provided in the boiling pipe 5 on the outlet side of the heat exchanger 11. An outside air temperature detector 15 c for detecting the outside air temperature is provided, and the information is input to the control means 8. Although the outside temperature detector 15c is provided in the heating means 10 in the present embodiment, it may be provided on the hot water storage tank 2 side, and the same effect can be obtained even if information on the water temperature supplied from the water supply side is used. It is.
また、制御手段８には運転条件を入力指示する操作手段１７が接続されており、この操作手段１７により使用者は好みの運転形態を選択し指示することで用途に応じた運転を行うようになっている。そして、この操作手段１７には、予め設定された運転条件で自動的に沸き上げ動作を行うおまかせ運転モードか、使用者が使用状態に応じて必要とされる湯量を確保するために、任意に沸き上げ湯量等を設定し、設定された条件に基づいて沸き上げ動作を行う手動運転モードかを選択するためのモード選択手段１８を有している。 Further, the control means 8 is connected to an operation means 17 for instructing to input an operation condition, and the operation means 17 allows the user to select and instruct a desired driving form so as to perform an operation according to the application. It has become. And in this operation means 17, in order to ensure the amount of hot water which a user requires according to a use state, or the automatic operation mode which performs a boiling operation automatically on the preset driving conditions, arbitrarily Mode selection means 18 is provided for setting the amount of boiling water and the like and selecting the manual operation mode in which the boiling operation is performed based on the set conditions.
上記構成において、まず、モード選択手段１８によりおまかせ運転モードとするか、手動運転モードにするかを選択し、操作手段１７を介して制御手段８に指示する。 In the above configuration, first, the mode selection means 18 selects the automatic operation mode or the manual operation mode, and instructs the control means 8 via the operation means 17.
制御手段８はモード選択情報に基づいて全量沸き上げ時の沸き上げ停止条件を変更し、おまかせ運転モードまたは手動運転モードに対応して沸き上げ動作を制御する。どちらの運転モードにおいても全量沸上げ運転時には、貯湯ユニット１の制御手段８の信号を、加熱手段１０の制御器１６が受けて、沸上げポンプ６及び圧縮機１２を運転させる。 Based on the mode selection information, the control means 8 changes the boiling stop condition at the time of full boiling, and controls the boiling operation corresponding to the automatic operation mode or the manual operation mode. In either operation mode, at the time of full-boiling operation, the controller 16 of the heating unit 10 receives the signal of the control unit 8 of the hot water storage unit 1 and operates the boiling pump 6 and the compressor 12.
例えば、沸上げ温度が６５度の場合は、出湯温検出器１５ｂの温度が６５度になるように沸上げポンプ６を制御手段８が適切な流量に調節して制御する。また、出湯温度の制御は、制御器１６により、圧縮機１２の回転数や膨張弁１４の開度などのヒートポンプサイクルでの制御によって行うこともできる。 For example, when the boiling temperature is 65 degrees, the controller 8 controls the boiling pump 6 to an appropriate flow rate so that the temperature of the tapping temperature detector 15b is 65 degrees. Further, the tapping temperature can be controlled by the controller 16 by controlling the heat pump cycle such as the rotation speed of the compressor 12 and the opening degree of the expansion valve 14.
上記動作により貯湯タンク２には、上部から順に６５度の湯が層状に貯留されていく。ここで、モード選択手段１８でおまかせ運転モードが選択されている場合は、加熱動作が進み、貯湯タンク２内の下方まで６５℃の湯が貯留されてくると、積層貯湯判定手段９で残湯量検出器７ｂの信号と第３判定値を比較し、残湯量検出器７ｂの信号＞第３判定値の関係になると積層状態で貯湯されていると判断され、かつ残湯量検出器７ａの信号と第２判定値、入水温検出器１５ａの信号と第１判定値をそれぞれ比較し、それぞれの信号が予め定めた判定値以上になったとき、沸上げポンプ６及び圧縮機１２を停止し、全量沸上げ運転を終了する。 With the above operation, 65 degrees of hot water is stored in the hot water storage tank 2 in order from the top. Here, when the automatic operation mode is selected by the mode selection means 18, the heating operation proceeds, and when 65 ° C. hot water is stored in the hot water storage tank 2, the amount of remaining hot water is determined by the laminated hot water determination means 9. The signal of the detector 7b is compared with the third determination value, and if the relationship of the signal of the remaining hot water amount detector 7b> the third determination value, it is determined that the hot water is stored in the stacked state, and the signal of the remaining hot water amount detector 7a The second judgment value and the signal of the incoming water temperature detector 15a are compared with the first judgment value, respectively, and when each signal becomes equal to or higher than a predetermined judgment value, the boiling pump 6 and the compressor 12 are stopped, and the total amount End boiling operation.
また、上記沸き上げ動作において、第１判定値および第２判定値は、外気温検出器１５ｃで検出される外気温度によって決定され、外気温度が低下すると各判定値を上げるように設定が変更される。つまり、外気温度が低下する冬場においては使用湯量が増加するため多くの湯量を確保する必要があり、この場合、加熱動作の停止条件である第１判定値と第２判定値を高めに設定することで加熱動作期間を引き延ばすことができ、貯湯タンク２内により多くの高温湯を貯湯することができる。反対に、外気温度が上昇する夏場においては使用湯量が減少するため、残湯量を抑制するためには少な目の湯量を確保しておく必要があり、この場合、加熱動作の停止条件である第１判定値と第２判定値を低めに設定することで加熱動作期間を短縮することができ、貯湯タンク２内に適量の高温湯を貯湯することができる。 In the boiling operation, the first determination value and the second determination value are determined by the outside air temperature detected by the outside air temperature detector 15c, and the setting is changed so as to increase each determination value when the outside air temperature decreases. The That is, in the winter when the outside air temperature decreases, the amount of hot water used increases, so it is necessary to secure a large amount of hot water. In this case, the first determination value and the second determination value, which are conditions for stopping the heating operation, are set higher. Thus, the heating operation period can be extended, and more hot water can be stored in the hot water storage tank 2. On the other hand, since the amount of hot water used decreases in the summer when the outside air temperature rises, it is necessary to secure a small amount of hot water in order to suppress the amount of remaining hot water. By setting the determination value and the second determination value lower, the heating operation period can be shortened, and an appropriate amount of hot water can be stored in the hot water storage tank 2.
さらに、外気温度によって沸き上げ温度そのものを変更することで、より季節に対応した湯量をヒートポンプサイクルの効率的な運転で確保することができる。つまり、外気温
度が上昇する夏場においては、沸き上げ温度を低下させ加熱手段１０に供給される入水温度を抑えることでヒートポンプサイクルの効率的な運転を確保し、併せて加熱動作の停止条件である積層貯湯判定手段９の第３判定値を低く設定することで加熱動作期間を短縮し、より効率的な運転を行わせることができる。また、外気温度が低下する冬場においては、沸き上げ温度を高く設定することで高温の湯を確保しつつ、併せて加熱動作の停止条件である積層貯湯判定手段９の第３判定値を高く設定することで加熱動作期間を引き延ばし、より多くの湯量を確保することができる。
Furthermore, by changing the boiling temperature itself according to the outside air temperature, it is possible to secure a hot water amount that corresponds to the season by an efficient operation of the heat pump cycle. That is, in the summer when the outside air temperature rises, it is a condition for stopping the heating operation together with ensuring the efficient operation of the heat pump cycle by lowering the boiling temperature and suppressing the incoming water temperature supplied to the heating means 10. By setting the third determination value of the laminated hot water storage determination means 9 low, the heating operation period can be shortened and more efficient operation can be performed. In winter when the outside air temperature decreases, the hot water is ensured by setting the boiling temperature high, and at the same time, the third determination value of the laminated hot water storage determining means 9 which is a stop condition of the heating operation is set high. By doing so, the heating operation period can be extended and a larger amount of hot water can be secured.
また、モード選択手段１８で手動運転モードが選択されている場合は、加熱動作が進み、貯湯タンク２内の全量が６５℃の湯となり、貯湯タンク２の下部に配管された加熱手段１０への給水路である沸き上げ配管５に設けた入水温検出器１５ａの温度が第４判定値以上になったとき、沸上げポンプ６及び圧縮機１２を停止し、全量沸上げ運転を終了する。この手動運転モードにおいても、外気温度により第４判定値と沸き上げ温度を変更することにより、上記同様、季節に対応してヒートポンプサイクルの効率的な運転と使用実態に即した効果的な湯量の確保を行うことができるものである。この沸上げ停止動作についての詳細は、図２のフローを用いて説明する。 Further, when the manual operation mode is selected by the mode selection means 18, the heating operation proceeds, and the total amount in the hot water storage tank 2 becomes 65 ° C. hot water, and the heating means 10 connected to the lower part of the hot water storage tank 2 is supplied to the heating means 10. When the temperature of the incoming water temperature detector 15a provided in the boiling pipe 5 that is a water supply channel becomes equal to or higher than the fourth determination value, the boiling pump 6 and the compressor 12 are stopped, and the total amount boiling operation is finished. Also in this manual operation mode, by changing the fourth determination value and the boiling temperature according to the outside air temperature, as in the above, the effective operation of the heat pump cycle corresponding to the season and the effective amount of hot water in accordance with the actual use situation It can be secured. Details of the boiling stop operation will be described with reference to the flowchart of FIG.
また、本実施例による貯湯式給湯器では、第１の所定時間帯と第２の所定時間帯とを設定している。第１の所定時間帯は、例えば２３時から７時までの深夜時間帯で、加熱手段１０を動作させて全量沸上げ運転を行う時間を含む時間帯であり、ピークシフト時間帯を含んでいる。ピークシフト時間帯は、全量沸上げ運転を待機させている時間帯である。第２の所定時間帯は、例えば７時から２３時までの昼間時間帯で、全量沸上げ運転を行わない時間帯である。この第２の所定時間帯では、湯量が足りないと判断された場合には湯切れ沸上げ運転を行う。なお、上記以外の沸き上げ動作として、第２の所定時間帯に所定の条件下で残湯検出器７ａが所定温度以下を検出すると、沸き上げ動作を行う追加沸き上げ運転モードを有している。この追加沸き上げ運転モードは、使用湯量が不足することが判っているときに予め所定の湯量を確保するための沸き上げ動作である。 Moreover, in the hot water storage type water heater according to the present embodiment, a first predetermined time zone and a second predetermined time zone are set. The first predetermined time zone is, for example, a midnight time zone from 23:00 to 7 o'clock, including a time zone in which the heating means 10 is operated to perform a full-boiling operation, and includes a peak shift time zone. . The peak shift time zone is a time zone in which the whole amount boiling operation is waited. The second predetermined time zone is, for example, a daytime time zone from 7 o'clock to 23 o'clock, and is a time zone during which no full boiling operation is performed. In this second predetermined time zone, when it is determined that the amount of hot water is insufficient, the hot water boiling operation is performed. As a boiling operation other than the above, there is an additional boiling operation mode in which a boiling operation is performed when the remaining hot water detector 7a detects a predetermined temperature or lower under a predetermined condition in a second predetermined time period. . This additional boiling operation mode is a boiling operation for securing a predetermined amount of hot water in advance when it is known that the amount of hot water used is insufficient.
まず、第１の所定時間かどうか判断する（ステップ１）。第１の所定時間であれば、ピークシフト時間帯であるかどうか判断する（ステップ２）。ピークシフト時間帯であれば待機状態とし、ピークシフト時間帯以外であれば、運転モードの確認を行い、おまかせ運転モードを確認した場合（ステップ３）は、所定のシーケンスに基づいて全量沸上げ運転を開始する（ステップ４）。 First, it is determined whether or not it is the first predetermined time (step 1). If it is the first predetermined time, it is determined whether or not it is a peak shift time zone (step 2). If it is a peak shift time zone, it will be in a standby state. If it is not a peak shift time zone, the operation mode will be checked, and if the automatic operation mode is confirmed (step 3), the entire boiling operation will be performed based on a predetermined sequence. Is started (step 4).
そして、外気温検出器１５ｃで検出された外気温度に基づいて、第１判定値、第２判定値、第３判定値が設定され（ステップ５）、この各判定値に基づいて沸き上げ動作が制御される。これにより、季節に応じて沸き上げ条件を変更することが可能になり、使用形態に即した最適な湯量確保とヒートポンプサイクルの効率的な運転を行うことができる。 Then, the first determination value, the second determination value, and the third determination value are set based on the outside air temperature detected by the outside air temperature detector 15c (step 5), and the boiling operation is performed based on each determination value. Be controlled. Thereby, it becomes possible to change boiling conditions according to a season, and the optimal amount of hot water according to a use form and efficient operation | movement of a heat pump cycle can be performed.
ステップ４の全量沸き上げ運転により加熱動作が進むと、まず、前述したように、残湯量検出器７ｂの信号により、積層貯湯判定手段９が、残湯温度＞第３判定値の比較を行い積層状態で貯湯されているかどうかを判断する（ステップ６）。ステップ６で、積層状態で貯湯されていると判定した場合、次に、入水温検出器１５ａにより検出される入水温度が予め設定した第１判定値Ｔ１以上かどうか判断する（ステップ７）。入水温度が第１判定値Ｔ１以上であると判断した場合、次に、貯湯タンク２の最下端部に配設された残湯量検出器７ａで検出される温度が予め設定した第２判定値Ｔ２以上かどうか判断する（ステップ８）。残湯量検出器７ａの温度が第２判定値Ｔ２以上の時、全量沸上げ運転を終了する（ステップ９）。 When the heating operation proceeds by the total amount boiling operation in step 4, first, as described above, the stacked hot water determination means 9 compares the remaining hot water temperature> the third determination value in accordance with the signal from the remaining hot water amount detector 7b. It is determined whether the hot water is stored in the state (step 6). If it is determined in step 6 that the hot water is stored in the stacked state, it is next determined whether or not the incoming water temperature detected by the incoming water temperature detector 15a is equal to or higher than a first determination value T1 set in advance (step 7). When it is determined that the incoming water temperature is equal to or higher than the first determination value T1, the temperature detected by the remaining hot water detector 7a disposed at the lowermost end of the hot water storage tank 2 is set to a second determination value T2 set in advance. It is determined whether it is above (step 8). When the temperature of the remaining hot water detector 7a is equal to or higher than the second determination value T2, the total amount boiling operation is terminated (step 9).
なお、判定フローの順番は本実施の形態に限定されるものではなく、どのような順番で
判定しても同様の効果が得られるものである。
Note that the order of determination flow is not limited to this embodiment, and the same effect can be obtained regardless of the order of determination.
ここで、入水温度を判定する第１判定値Ｔ１は、残湯量検出器７ａの温度を判定する第２判定値Ｔ２より低く設定されている。この判定値に差を設けている理由は、貯湯タンク２内の下部に形成される混合層の影響を考慮し、ヒートポンプサイクルの効率的な運転と湯量の有効確保を両立させるためのものである。 Here, the first determination value T1 for determining the incoming water temperature is set lower than the second determination value T2 for determining the temperature of the remaining hot water detector 7a. The reason for providing a difference in the determination value is to achieve both efficient operation of the heat pump cycle and effective securing of the amount of hot water in consideration of the influence of the mixed layer formed in the lower part of the hot water storage tank 2. .
つまり、おまかせ運転モードにおける全量沸き上げ運転の終了条件として、積層状態で貯湯されていること（例えば、残湯量検出器７ｂの温度が第３判定値以上であること）、入水温度が第１判定値Ｔ１以上であること、残湯量検出器７ａの温度が第２判定値Ｔ２以上であること、の３つのＡＮＤ条件が成立したとき沸き上げを完了するようにしている。 That is, as a condition for ending the full-boiling operation in the automatic operation mode, hot water is stored in a stacked state (for example, the temperature of the remaining hot water detector 7b is equal to or higher than the third determination value), and the incoming water temperature is the first determination. The boiling is completed when the three AND conditions of the value T1 or more and the temperature of the remaining hot water detector 7a being the second determination value T2 or more are satisfied.
これは、入水温度が第１判定値Ｔ１以上であること、だけで沸上げ運転を停止すると、貯湯タンク２内の混合層の状態に関係なく停止する場合があり、必要とする湯量が確保できなくなるという問題が生じるからである。また、残湯検出器７ａの温度が第２判定値Ｔ２以上であること、だけで停止すると、残湯量検出器７ａの取付位置より下方の湯温に関係なく停止する場合があり、ＣＯＰが低下する前から沸上げを停止する事になり、効率よく多くのお湯を確保する機会を逃す。 This is because if the boiling water operation is stopped simply because the incoming water temperature is equal to or higher than the first judgment value T1, the hot water tank 2 may stop regardless of the state of the mixed layer, and the required amount of hot water can be secured. This is because the problem of disappearing occurs. Moreover, if the temperature of the remaining hot water detector 7a is not less than the second determination value T2, it may stop regardless of the hot water temperature below the attachment position of the remaining hot water amount detector 7a, and the COP is lowered. We will stop boiling before we miss the opportunity to secure a lot of hot water efficiently.
さらに、本実施の形態では積層状態で貯湯されていること、を判断条件に入れている。これは、入水温度＞第１判定値Ｔ１と、残湯検出器７ａの温度＞第２判定値Ｔ２の関係だけで沸上げ停止を判断すると、例えば貯湯タンクが、全量沸上げ後、数日使用されずに自然放熱して混合層が拡大し、タンク内湯温が一律４５度になった場合、上記条件である、入水温度＞第１判定値Ｔ１、残湯検出器７ａの温度＞第２判定値Ｔ２の関係を満足し、いずれの条件にも合致してしまい、全量沸上げ運転がなされずに停止するからである。 Furthermore, in the present embodiment, the fact that the hot water is stored in a stacked state is included in the determination condition. This is because, for example, when the boiling stop is determined only by the relationship of the incoming water temperature> the first determination value T1 and the temperature of the remaining hot water detector 7a> the second determination value T2, for example, the hot water storage tank is used for several days after the entire amount has been heated. If the mixed layer expands due to natural heat dissipation and the hot water temperature in the tank reaches 45 degrees uniformly, the above conditions are: incoming water temperature> first determination value T1, temperature of remaining hot water detector 7a> second determination This is because the relationship of the value T2 is satisfied, and any of the conditions is met, and the entire amount boiling operation is stopped without being performed.
そこで、積層状態で貯湯されていること、を判断条件に入れることにより、ヒートポンプサイクルの効率的な運転と湯量の有効確保を両立させた沸き上げ動作を行うことができるものである。
また、ステップ３で運転モードの確認を行い、おまかせ運転モードでないと判定した場合は手動運転モードであると判断し、所定のシーケンスに基づいて全量沸上げ運転を開始する（ステップ１０）。そして、外気温検出器１５ｃで検出された外気温度に基づいて、第４判定値が設定され（ステップ１１）、この判定値に基づいて沸き上げ動作が制御される。これにより、季節に応じて沸き上げ条件を変更することが可能になり、使用形態に即した最適な湯量確保とヒートポンプサイクルの効率的な運転を行うことができる。
Therefore, by taking into account that hot water is stored in a stacked state, it is possible to perform a boiling operation that achieves both efficient operation of the heat pump cycle and effective ensuring of the amount of hot water.
Further, the operation mode is confirmed in Step 3, and if it is determined that the operation mode is not the automatic operation mode, it is determined that the operation mode is the manual operation mode, and the full-boiling operation is started based on a predetermined sequence (Step 10). Then, a fourth determination value is set based on the outside air temperature detected by the outside air temperature detector 15c (step 11), and the boiling operation is controlled based on this determination value. Thereby, it becomes possible to change the heating conditions according to the season, and it is possible to ensure the optimum amount of hot water in accordance with the usage pattern and to efficiently operate the heat pump cycle.
そして、加熱動作が進み、貯湯タンク２内の全量が所定の沸き上げ温度の湯となり、貯湯タンク２の下部に配管された加熱手段１０への給水路である沸き上げ配管５に設けた入水温検出器１５ａにより検出される入水温度が予め設定した第４判定値以上かどうか判断する（ステップ１２）。そして、入水温度が第４判定値Ｔ４以上であると判断した場合に全量沸上げ運転を終了する（ステップ９）。 Then, the heating operation proceeds, so that the entire amount in the hot water storage tank 2 becomes hot water having a predetermined boiling temperature, and the incoming water temperature provided in the boiling pipe 5 which is a water supply path to the heating means 10 piped below the hot water storage tank 2. It is determined whether the incoming water temperature detected by the detector 15a is equal to or higher than a preset fourth determination value (step 12). Then, when it is determined that the incoming water temperature is equal to or higher than the fourth determination value T4, the full-boiling operation is ended (step 9).
以上のように、第１の所定時間帯に行われる全量沸き上げ運転の停止条件を、おまかせ運転モードと手動運転モードで変更し、用途に応じて使用者が任意に選択可能な構成とし、さらに外気温度に基づいて停止条件の判定値を設定することで、季節に対応してヒートポンプサイクルの効率的な運転と湯量の有効確保を両立させた沸き上げ動作を提供することができ、使い勝手の向上が図れるものである。 As described above, the stop condition of the total boiling operation performed in the first predetermined time zone is changed between the automatic operation mode and the manual operation mode, and the configuration can be arbitrarily selected by the user according to the application. By setting the judgment value of the stop condition based on the outside air temperature, it is possible to provide a boiling operation that achieves both efficient operation of the heat pump cycle and effective securing of hot water volume according to the season, improving usability Can be achieved.
本発明の貯湯式温水器は、特に冷媒として二酸化炭素を用いたヒートポンプサイクルを利用した貯湯式温水器に有用であり、その他ヒータやガスを熱源とする貯湯式温水器にも適用できる。 The hot water storage water heater of the present invention is particularly useful for a hot water storage water heater using a heat pump cycle using carbon dioxide as a refrigerant, and can also be applied to a hot water storage water heater using a heater or gas as a heat source.
２ 貯湯タンク
３ 出湯管
４ 給水管
５ 沸上げ配管
６ 沸上げポンプ
７ａ〜７ｅ 残湯量検出器
８ 制御手段
９ 積層貯湯判定手段
１０ 加熱手段
１５ａ 入水温検出器
１５ｃ 外気温検出器
１７ 操作手段
１８ モード選択手段
DESCRIPTION OF SYMBOLS 2 Hot water storage tank 3 Hot water discharge pipe 4 Water supply pipe 5 Boiling piping 6 Boiling pump 7a-7e Remaining hot water amount detector 8 Control means 9 Laminated hot water determination means 10 Heating means 15a Incoming water temperature detector 15c Outside temperature detector 17 Operation means 18 Mode Selection means
Claims (4)
前記操作手段により予め設定された沸き上げ条件に基づいて自動的に沸き上げ動作を行うおまかせ運転モードと、使用者が任意に沸き上げ条件を設定して沸き上げ動作を行う手動運転モードとに切り替えることができる貯湯式温水器であって、
前記制御手段は、第１の所定時間帯にタンク全量を沸き上げる全量沸き上げ運転モードと、第２の所定時間帯に前記残湯検出器で所定残湯量になったことを検出した場合に沸き上げ動作を開始する湯切れ沸き上げ運転モードを有し、
前記操作手段によりおまかせ運転モードに切り替えられた場合、前記全量沸き上げ運転モードは、前記積層貯湯判定手段と、前記入水温検出器と、前記残湯量検出器からの信号により前記加熱手段の動作を停止するようにし、
前記操作手段により手動運転モードに切り替えられた場合、前記全量沸き上げ運転モードは、前記入水温検出器からの信号により前記加熱手段の動作を停止するようにし、
前記加熱手段の動作停止条件を外気温度に基づき設定するようにした貯湯式温水器。 A hot water storage tank, a heating pipe that communicates the lower and upper parts of the hot water storage tank to circulate the water in the lower part of the tank, a heating pump that is arranged in the heating pipe, and a middle of the heating pipe Heating means for heating the water supplied by the boiling pump using a heat pump cycle, an incoming water temperature detector for detecting the water temperature supplied to the heating means, and detecting the water temperature at a predetermined height of the hot water storage tank A remaining hot water amount detector, a laminated hot water determination means for determining whether or not hot water is stored in the hot water storage tank in a stacked state based on a water temperature detected by the remaining hot water amount detector, and an outside air temperature detector for detecting an outside air temperature; A control means for controlling the heating means to perform a boiling operation, and an operating means for inputting operating conditions to the control means,
Switching between the automatic operation mode in which the boiling operation is automatically performed based on the boiling condition preset by the operation means and the manual operation mode in which the user arbitrarily sets the boiling condition and performs the boiling operation. A hot water heater that can
The control means boils when the full amount boiling operation mode for boiling the entire amount of the tank during the first predetermined time zone and when the remaining hot water detector detects that the predetermined remaining hot water amount is reached during the second predetermined time zone. Has a hot water boiling operation mode to start the lifting operation,
When switched to the entrusted operation mode by the operation means, the full-boiling operation mode is the operation of the heating means by signals from the laminated hot water storage judging means, the incoming water temperature detector, and the remaining hot water amount detector. To stop,
When the operation unit is switched to the manual operation mode, the full-boiling operation mode is configured to stop the operation of the heating unit by a signal from the incoming water temperature detector,
A hot water storage water heater in which the operation stop condition of the heating means is set based on the outside air temperature.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58110942A (en) * | 1981-12-24 | 1983-07-01 | Matsushita Electric Ind Co Ltd | Electric water heater |
| JP2003156254A (en) * | 2001-11-16 | 2003-05-30 | Mitsubishi Electric Corp | Heat pump type water heater |
| JP2003194400A (en) * | 2001-12-26 | 2003-07-09 | Daikin Ind Ltd | Heat pump type hot water supply device |
| JP2003254606A (en) * | 2002-03-01 | 2003-09-10 | Mitsubishi Electric Corp | Heat pump type hot water supply system |
| JP2004132628A (en) * | 2002-10-11 | 2004-04-30 | Daikin Ind Ltd | Hot-water supplier |
| JP2004245506A (en) * | 2003-02-14 | 2004-09-02 | Tokyo Gas Co Ltd | Hot water storage device |
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2005
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58110942A (en) * | 1981-12-24 | 1983-07-01 | Matsushita Electric Ind Co Ltd | Electric water heater |
| JP2003156254A (en) * | 2001-11-16 | 2003-05-30 | Mitsubishi Electric Corp | Heat pump type water heater |
| JP2003194400A (en) * | 2001-12-26 | 2003-07-09 | Daikin Ind Ltd | Heat pump type hot water supply device |
| JP2003254606A (en) * | 2002-03-01 | 2003-09-10 | Mitsubishi Electric Corp | Heat pump type hot water supply system |
| JP2004132628A (en) * | 2002-10-11 | 2004-04-30 | Daikin Ind Ltd | Hot-water supplier |
| JP2004245506A (en) * | 2003-02-14 | 2004-09-02 | Tokyo Gas Co Ltd | Hot water storage device |
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