JP2003035453A - Heat pump bath hot water supply system - Google Patents
Heat pump bath hot water supply systemInfo
- Publication number
- JP2003035453A JP2003035453A JP2001221093A JP2001221093A JP2003035453A JP 2003035453 A JP2003035453 A JP 2003035453A JP 2001221093 A JP2001221093 A JP 2001221093A JP 2001221093 A JP2001221093 A JP 2001221093A JP 2003035453 A JP2003035453 A JP 2003035453A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- water supply
- heat
- bath
- supply operation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 649
- 239000003507 refrigerant Substances 0.000 claims abstract description 50
- 238000001514 detection method Methods 0.000 claims description 40
- 238000010438 heat treatment Methods 0.000 abstract description 17
- 238000003287 bathing Methods 0.000 description 22
- 238000010586 diagram Methods 0.000 description 15
- 230000005611 electricity Effects 0.000 description 12
- 238000009835 boiling Methods 0.000 description 8
- 239000008400 supply water Substances 0.000 description 7
- 230000007423 decrease Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 125000002066 L-histidyl group Chemical group [H]N1C([H])=NC(C([H])([H])[C@](C(=O)[*])([H])N([H])[H])=C1[H] 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、大気熱や浴槽水の
温熱などをヒートポンプサイクルの熱源として、冷媒で
給湯水や浴槽水の加熱を行う装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for heating hot water or bath water with a refrigerant using atmospheric heat, warm water of bath water or the like as a heat source of a heat pump cycle.
【０００２】[0002]
【従来の技術】従来、この種のヒートポンプ風呂給湯シ
ステムとしては、例えば、特開平７−７１８３９号公報
に記載されているようなものがあった。図８は、前記公
報に記載された従来のヒートポンプ風呂給湯システムを
示すものである。2. Description of the Related Art Heretofore, as a heat pump bath hot water supply system of this type, there has been one described in, for example, Japanese Patent Laid-Open No. 7-71839. FIG. 8 shows the conventional heat pump bath hot water supply system described in the above publication.
【０００３】図８に示すヒートポンプ風呂給湯システム
において、１は圧縮機、１ａ、１ｂ、１ｃは圧縮機１か
ら吐出された冷媒が循環するヒートポンプ回路、２は貯
水槽７の給湯水と圧縮機１から吐出された冷媒が熱交換
する給湯熱交換器、３ａ、３ｂ、３ｃ、３ｄ、３ｅ、３
ｆはヒートポンプ回路１ａ、１ｂ、１ｃに設置して、ヒ
ートポンプ回路を切り替える回路切替弁、４ａ、４ｂは
膨張弁、５は浴槽８の浴槽水とヒートポンプ回路１ａを
循環する冷媒が熱交換する風呂熱交換器、６は大気とヒ
ートポンプ回路１ｃの冷媒が熱交換する大気熱交換器で
ある。In the heat pump bath hot water supply system shown in FIG. 8, 1 is a compressor, 1a, 1b, 1c are heat pump circuits in which the refrigerant discharged from the compressor 1 circulates, and 2 is hot water in a water tank 7 and the compressor 1 Water heat exchangers 3a, 3b, 3c, 3d, 3e, 3 for exchanging heat with the refrigerant discharged from the
f is a circuit switching valve installed in the heat pump circuits 1a, 1b, and 1c to switch the heat pump circuits, 4a and 4b are expansion valves, and 5 is bath heat in which the bath water in the bathtub 8 and the refrigerant circulating in the heat pump circuit 1a exchange heat. The exchanger 6 is an atmospheric heat exchanger for exchanging heat between the atmosphere and the refrigerant in the heat pump circuit 1c.
【０００４】上記構成において、大気熱をヒートポンプ
サイクルの熱源として、貯水槽７の給湯水を冷媒で加熱
する大気熱利用給湯運転を行うときは、以下のような運
転を行う。ヒートポンプ回路１ａの冷媒が、回路切替弁
３ａ、給湯熱交換器２、膨張弁４ａ、ヒートポンプ回路
１ｃ、大気熱交換器６、回路切替弁３ｆ、ヒートポンプ
回路１ｂ、圧縮機１の順に流れるように、回路切替弁３
ａ、３ｂ、３ｃ、３ｄ、３ｅ、３ｆの開閉制御を行い、
圧縮機１を駆動させる。圧縮機１から吐出された高温高
圧の冷媒は、給湯熱交換器２で給湯水と熱交換して冷媒
が保有する熱エネルギーを給湯水へ放熱する。その後、
膨張弁４ａで減圧されて低温低圧となった冷媒は、大気
熱交換器６で大気熱を吸熱し、圧縮機１に吸入される。
給湯熱交換器２で冷媒から加熱されて高温となった給湯
水は貯水槽７に貯湯することができる。In the above structure, when the atmospheric heat utilizing hot air is used as the heat source of the heat pump cycle, the following operation is carried out when performing the atmospheric heat utilizing hot water supply operation for heating the hot water supplied from the water storage tank 7 with the refrigerant. In order that the refrigerant of the heat pump circuit 1a flows in the order of the circuit switching valve 3a, the hot water supply heat exchanger 2, the expansion valve 4a, the heat pump circuit 1c, the atmospheric heat exchanger 6, the circuit switching valve 3f, the heat pump circuit 1b, and the compressor 1, Circuit switching valve 3
Open / close control of a, 3b, 3c, 3d, 3e, 3f,
The compressor 1 is driven. The high-temperature and high-pressure refrigerant discharged from the compressor 1 exchanges heat with the hot-water supply water in the hot-water supply heat exchanger 2 to radiate the thermal energy of the refrigerant to the hot-water supply water. afterwards,
The refrigerant that has been decompressed by the expansion valve 4 a and has become low temperature and low pressure absorbs atmospheric heat in the atmospheric heat exchanger 6 and is sucked into the compressor 1.
The hot water supplied to the hot water supply heat exchanger 2 by the refrigerant and heated to a high temperature can be stored in the water tank 7.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、前記従
来の構成では、貯湯槽の給湯水を高温に加熱するために
は、圧縮機１に内蔵しているモーターの耐熱温度、耐久
性を維持できる範囲内で、圧縮機１から吐出される冷媒
の温度を高温にして運転しなければならない。このと
き、ヒートポンプサイクルの動作点を高圧にしなければ
ならないので、機器の耐圧性、運転効率の低下が課題と
なっている。However, in the above-mentioned conventional structure, in order to heat the hot water of the hot water storage tank to a high temperature, the heat resistance temperature and durability of the motor incorporated in the compressor 1 can be maintained within a range. Inside, the temperature of the refrigerant discharged from the compressor 1 must be raised to operate. At this time, since the operating point of the heat pump cycle has to be set to a high pressure, the pressure resistance of the equipment and the reduction of the operating efficiency are problems.
【０００６】本発明は、前記従来の課題を解決するもの
で、入浴後の比較的温度の高い浴槽水で吸入冷媒を加熱
し、加熱度の大きいガス冷媒にして、圧縮機の吐出冷媒
温度を高温にして、高温高効率の給湯水の加熱運転を行
うものである。The present invention is to solve the above-mentioned conventional problems, in which the suction refrigerant is heated by bath water having a relatively high temperature after bathing to become a gas refrigerant having a high heating degree, and the discharge refrigerant temperature of the compressor is changed. The heating operation is performed at high temperature with high temperature and high efficiency.
【０００７】[0007]
【課題を解決するための手段】本発明は上記課題を解決
するために、貯水槽を有する水回路と、圧縮機を有する
ヒートポンプ回路と、ヒートポンプ回路の冷媒と水回路
の給湯水が熱交換する給湯熱交換器と、浴槽を有する浴
槽水回路と、ヒートポンプ回路の冷媒と浴槽水回路の浴
槽水が熱交換する風呂熱交換器と、時刻を検知する時刻
検知手段と、時刻検知手段の検知時刻が深夜時間帯であ
るとき、風呂熱交換器で浴槽水から吸熱した熱を給湯熱
交換器で給湯水の加熱に利用する風呂熱利用給湯運転を
行う運転制御手段を備えたことを特徴とするヒートポン
プ風呂給湯システムとしたものである。To solve the above problems, the present invention exchanges heat between a water circuit having a water tank, a heat pump circuit having a compressor, a refrigerant of the heat pump circuit and hot water of the water circuit. Hot water supply heat exchanger, bath water circuit having a bath, bath heat exchanger for exchanging heat between the refrigerant of the heat pump circuit and bath water of the bath water circuit, time detection means for detecting time, and detection time of time detection means It is characterized in that it is equipped with operation control means for performing hot water supply operation in which the heat absorbed from the bath water in the bath heat exchanger is used to heat the hot water in the hot water heat exchanger in the middle of the night. This is a heat pump bath hot water supply system.
【０００８】これによって、入浴後の浴槽水の温熱を熱
源とすることによって、ヒートポンプサイクルの高効率
化を図り、電気料金が安価に設定されている深夜時間帯
を利用することで、大幅にランニングコストが低減され
たヒートポンプ風呂給湯システムを提供することを目的
とする。[0008] As a result, by using the heat of the bath water after bathing as a heat source, the efficiency of the heat pump cycle can be improved, and by using the midnight hours when the electricity rate is set to a low price, it is possible to run significantly. It is an object of the present invention to provide a heat pump bath hot water supply system with reduced cost.
【０００９】[0009]
【発明の実施の形態】請求項１に記載の発明は、貯水槽
を有する水回路と、圧縮機を有するヒートポンプ回路
と、ヒートポンプ回路の冷媒と水回路の給湯水が熱交換
する給湯熱交換器と、浴槽を有する浴槽水回路と、ヒー
トポンプ回路の冷媒と浴槽水回路の浴槽水が熱交換する
風呂熱交換器と、時刻を検知する時刻検知手段と、時刻
検知手段の検知時刻が深夜時間帯であるとき、風呂熱交
換器で浴槽水から吸熱した熱を給湯熱交換器で給湯水の
加熱に利用する風呂熱利用給湯運転を行う運転制御手段
を備えたことを特徴とするヒートポンプ風呂給湯システ
ムとすることにより、入浴後の浴槽水の温熱をヒートポ
ンプサイクルの熱源として給湯水の加熱（風呂熱利用給
湯運転）を行うことができるから、給湯水を高効率に加
熱することができる。また、時刻検知手段で時刻を検知
し、この検知時刻が電気料金が安価に設定されている深
夜時間帯であるときに、風呂熱利用給湯運転を行わせる
ことができる。従って、ヒートポンプサイクルを最も効
率の高い状態で、かつ、安価な電気料金を利用した給湯
運転が可能となるので、給湯のランニングコストを大幅
に低下させたヒートポンプ風呂給湯システムとすること
ができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a water circuit having a water tank, a heat pump circuit having a compressor, and a hot water supply heat exchanger for exchanging heat between the refrigerant of the heat pump circuit and the hot water of the water circuit. A bathtub water circuit having a bathtub, a bath heat exchanger for exchanging heat between the refrigerant of the heat pump circuit and the bathtub water of the bathwater circuit, a time detection means for detecting the time, and a detection time of the time detection means for a midnight time zone. In this case, the heat pump bath hot water supply system is provided with operation control means for performing hot water hot water supply operation in which the heat absorbed from the bath water in the bath heat exchanger is used to heat the hot water in the hot water supply heat exchanger. By doing so, the hot water of the bath water after bathing can be heated by using the heat of the bath water as the heat source of the heat pump cycle (hot water hot water supply operation), so that the hot water can be heated with high efficiency. Further, it is possible to detect the time with the time detection means and to perform the hot water supply hot water supply operation when the detected time is the midnight time period when the electricity rate is set to be low. Therefore, the heat pump cycle can be performed in the most efficient state and the hot water supply operation using the inexpensive electricity rate can be performed, so that the heat pump bath hot water supply system in which the running cost of the hot water supply is significantly reduced can be obtained.
【００１０】請求項２に記載の発明は、使用者が手動で
風呂熱利用給湯運転の運転信号を発信させることができ
る給湯運転設定手段と、時刻検知手段の検知時刻が深夜
時間帯であって、給湯運転設定手段から風呂熱利用給湯
運転の運転信号が発信されている場合は、風呂熱利用給
湯運転を行う運転制御手段を備えたことを特徴とする請
求項１記載のヒートポンプ風呂給湯システムとすること
により、給湯運転設定手段から風呂熱利用給湯運転の運
転信号が発信されていても、深夜時間帯になるまで風呂
熱利用給湯運転を待機し、さらに、深夜時間帯であって
も、風呂熱利用給湯運転の運転信号が発信されるまで風
呂熱利用給湯運転を待機するので、利便性の向上したヒ
ートポンプ風呂給湯システムとすることができる。According to a second aspect of the present invention, the hot water supply operation setting means by which the user can manually issue an operation signal for hot water supply hot water supply operation and the time detected by the time detection means are in the midnight time zone. The heat pump bath hot water supply system according to claim 1, further comprising operation control means for performing a hot water use hot water supply operation when a hot water use hot water supply operation signal is transmitted from the hot water supply operation setting means. By doing so, even if the operation signal for the bath heat using hot water supply operation is transmitted from the hot water supply operation setting means, the bath heat using hot water supply operation is kept waiting until the midnight time, and even during the midnight time, the bath Since the bath heat utilization hot water supply operation is on standby until the operation signal of the heat utilization hot water supply operation is transmitted, the heat pump bath hot water supply system with improved convenience can be provided.
【００１１】請求項３に記載の発明は、大気とヒートポ
ンプ回路の冷媒が熱交換する大気熱交換器と、時刻検知
手段の検知時刻が深夜時間帯であって、給湯運転設定手
段から風呂熱利用給湯運転の運転信号が発信されていな
い場合は、大気熱交換器で大気から吸熱した熱を給湯熱
交換器で給湯水の加熱に利用する大気熱利用給湯運転を
行う運転制御手段を備えたことを特徴とする請求項２記
載のヒートポンプ風呂給湯システムとすることにより、
深夜時間帯であっても、給湯運転設定手段から風呂熱利
用給湯運転の運転信号が発信されていないときは、風呂
熱利用給湯運転の運転を待機し、その間は大気熱利用給
湯運転を行う。従って、深夜時間帯に入浴しても貯水槽
に高温の給湯水を貯水するので、深夜時間帯を有効に利
用して給湯水の沸き上げを完了することができ、貯水槽
の湯切れを防止したヒートポンプ風呂給湯システムとす
ることができる。According to a third aspect of the present invention, the atmospheric heat exchanger for exchanging heat between the atmosphere and the refrigerant in the heat pump circuit, and the detection time of the time detection means are in the midnight time zone, and the hot water supply operation setting means uses the bath heat. When the operation signal for the hot water supply operation is not transmitted, the operation control means for performing the hot water supply operation using the atmospheric heat to use the heat absorbed from the atmosphere by the atmospheric heat exchanger to heat the hot water in the hot water supply heat exchanger was provided. By using the heat pump bath hot water supply system according to claim 2,
Even during the midnight time, when the operation signal for the bath heat utilization hot water supply operation is not transmitted from the hot water supply operation setting means, the bath heat utilization hot water supply operation is on standby, and the atmospheric heat utilization hot water supply operation is performed during that time. Therefore, even if you take a bath in the midnight time, the hot water for hot water is stored in the water tank, so you can effectively use the midnight time to complete the boiling of the hot water, preventing the water from running out of the water tank. It can be used as a heat pump bath hot water supply system.
【００１２】請求項４に記載の発明は、大気とヒートポ
ンプ回路の冷媒が熱交換する大気熱交換器と、給湯運転
設定手段から風呂熱利用給湯運転の運転信号が発信され
る時刻を、使用者が手動で予約する運転予約手段と、時
刻検知手段の検知時刻が深夜時間帯であって、運転予約
手段に予約された時刻に達していない場合は大気熱利用
給湯運転を行い、その後、運転予約手段に予約された時
刻に達した場合は風呂熱利用給湯運転を行う運転制御手
段を備えたことを特徴とする請求項２〜３のいずれか１
項に記載のヒートポンプ風呂給湯システムとすることに
より、深夜時間帯であって、予約手段に予約した時刻に
なるまで大気熱利用給湯運転を行い、予約手段に予約し
た時刻になったら風呂熱利用給湯運転を行うので、深夜
時間帯の入浴中であっても貯水槽に高温の給湯水を貯水
することができるとともに、予め風呂熱利用給湯運転の
運転予約できるので、その日の入浴が終了して、使用者
が手動で風呂熱利用給湯運転の運転信号を発信させる作
業を忘れても、自動的に風呂熱利用給湯運転を行わせる
ことができる。従って、貯水槽の湯切れを防止し、さら
に使用者がその日の入浴の終了を待って、風呂熱利用給
湯運転の運転信号を発信させる作業を行わなくても風呂
熱利用給湯運転を行うヒートポンプ風呂給湯システムと
することができる。According to a fourth aspect of the present invention, the atmospheric heat exchanger for exchanging heat between the atmosphere and the refrigerant in the heat pump circuit, and the time when the operation signal for the bath heat utilization hot water supply operation is transmitted from the hot water supply operation setting means are set by the user. Manually reserves the driving reservation means, and if the time detected by the time detection means is in the midnight time and the time reserved by the driving reservation means has not reached, the hot water supply operation using atmospheric heat is performed, and then the driving reservation is made. The operation control means for performing hot water supply hot water supply operation when the time reserved by the means is reached is provided.
By using the heat pump bath hot water supply system according to the item, the hot air hot water supply operation is performed at midnight and until the time booked by the reservation means, and when the time booked by the reservation means comes Since the operation is performed, it is possible to store high-temperature hot water in the water tank even while taking a bath in the middle of the night, and it is possible to reserve the operation for hot water using hot water in advance, so the bathing of the day is over, Even if the user forgets to manually send the operation signal for the bath heat using hot water supply operation, the bath heat using hot water supply operation can be automatically performed. Therefore, a heat pump bath that prevents hot water from running out of the water tank, and that waits for the user to finish bathing on that day and then performs hot water hot water supply operation without sending the operation signal for hot water hot water supply operation It can be a hot water supply system.
【００１３】請求項５に記載の発明は、使用者が手動で
風呂熱利用給湯運転の運転信号を発信させることができ
る優先運転設定手段と、優先運転設定手段から風呂熱利
用給湯運転の運転信号が発信された場合は、時刻検知手
段の検知時刻に関わらず風呂熱利用給湯運転を行う運転
制御手段を備えたことを特徴とする請求項１〜４のいず
れか１項に記載のヒートポンプ風呂給湯システムとする
ことにより、優先運転設定手段から風呂熱利用給湯運転
の運転信号が発信された場合は、時刻に関係なく風呂熱
利用給湯運転を行わせるため、早朝、あるいは昼間に入
浴した場合でも、風呂熱利用給湯運転を実行して浴槽の
温熱を給湯水の加熱に有効利用することができる。ま
た、早朝、あるいは昼間の入浴に多量に給湯水を使用し
て、貯水槽の高温の給湯水が少なくなっても、風呂熱利
用給湯運転を行うことによって、貯水槽に高温の給湯水
を貯えることができるので、貯水槽の湯切れを防止する
ことができる。また、入浴者が好みに応じて浴槽水温度
を下げたい場合は、風呂熱利用給湯運転を行うと、浴槽
に温度の低い水を加えることなく浴槽水の温度を好みの
温度まで下げることができると同時に、貯水槽には温度
の高い給湯水を貯えることもできる。従って、浴槽の温
熱を無駄なく給湯の加熱に有効利用するヒートポンプ風
呂給湯システムとすることができる。According to a fifth aspect of the present invention, the priority operation setting means by which the user can manually send an operation signal for the hot water supply operation using bath heat, and the operation signal for the hot water supply operation using bath heat from the priority operation setting means. The heat pump bath hot water supply according to any one of claims 1 to 4, further comprising operation control means for performing hot water supply hot water supply operation regardless of the detection time of the time detection means. By setting the system, when the operation signal of the bath heat utilization hot water supply operation is transmitted from the priority operation setting means, the bath heat utilization hot water supply operation is performed regardless of the time, so even when taking a bath in the early morning or the daytime, It is possible to effectively use the heat of the bathtub to heat the hot water by executing the hot water supply operation using bath heat. In addition, even if a large amount of hot water is used for bathing in the early morning or during the daytime, even if the hot water in the water tank becomes low, hot water can be stored in the water tank by performing hot water supply operation using the bath heat. Therefore, the hot water in the water tank can be prevented from running out. Also, if the bather wants to lower the bath water temperature according to his / her preference, the bath heat utilization hot water supply operation can lower the temperature of the bath water to a desired temperature without adding low-temperature water to the bathtub. At the same time, hot water can be stored in the water tank. Therefore, it is possible to provide a heat pump bath hot water supply system that effectively utilizes the warm heat of the bathtub to heat the hot water supply.
【００１４】請求項６に記載の発明は、大気とヒートポ
ンプ回路の冷媒が熱交換する大気熱交換器と、大気の温
度を検知する温度センサーと、浴槽水の温度を検知する
温度センサーと、これら温度センサーの検知した温度を
基に、風呂熱利用給湯運転と大気熱利用給湯運転のどち
らか一方を選択して運転する運転制御手段を備えたこと
を特徴とする請求項１〜５のいずれか１項に記載のヒー
トポンプ風呂給湯システムとすることにより、浴槽水温
度と大気温度を比較し、温度の高い方をヒートポンプサ
イクルの熱源として給湯水の加熱運転を行うので、高効
率な給湯運転を行うヒートポンプ風呂給湯システムとす
ることができる。According to a sixth aspect of the present invention, an atmospheric heat exchanger for exchanging heat between the atmosphere and the refrigerant in the heat pump circuit, a temperature sensor for detecting the temperature of the atmosphere, a temperature sensor for detecting the temperature of bath water, and these The operation control means for selecting and operating either one of the hot water supply operation using bath heat and the hot water supply operation using atmospheric heat based on the temperature detected by the temperature sensor is provided. By using the heat pump bath hot water supply system according to item 1, the bath water temperature is compared with the atmospheric temperature, and the hotter one is used as the heat source of the heat pump cycle to perform the heating operation of the hot water, thus performing a highly efficient hot water supply operation. It can be a heat pump bath hot water supply system.
【００１５】請求項７に記載の発明は、浴槽の水位を検
知する水位センサーと、水位センサーの検知した水位を
基に、風呂熱利用給湯運転と大気熱利用給湯運転のどち
らか一方を選択して運転する運転制御手段を備えたこと
を特徴とする請求項１〜６のいずれか１項に記載のヒー
トポンプ風呂給湯システムとすることにより、浴槽の水
位を検知し、浴槽のお湯が少ないときは、大気熱利用給
湯運転を行うこととするので、風呂熱利用給湯運転を行
えないときでも、貯水槽に高温の給湯水を貯えることが
できる。また、浴槽の浴槽水の量が十分でないときは風
呂熱利用給湯運転を行わないので、風呂熱交換器等の凍
結破壊を未然に防ぐことができる。According to a seventh aspect of the present invention, a water level sensor for detecting the water level in the bathtub is selected, and one of the bath heat utilization hot water supply operation and the atmospheric heat utilization hot water supply operation is selected based on the water level detected by the water level sensor. The heat pump bath hot water supply system according to any one of claims 1 to 6, further comprising: an operation control unit that operates in such a manner that the water level in the bathtub is detected and when the hot water in the bathtub is low. Since the hot water supply operation using the atmospheric heat is performed, the hot water can be stored in the water storage tank even when the hot water supply operation using the bath heat cannot be performed. Further, when the amount of bath water in the bathtub is not sufficient, the bath heat utilization hot water supply operation is not performed, so that the bath heat exchanger or the like can be prevented from freezing and breaking.
【００１６】[0016]
【実施例】以下、本発明の実施例について図面を用いて
説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１７】（実施例１）図１は、本発明の実施例１に
おけるヒートポンプ風呂給湯システムの構成図を示すも
のである。図１において、３ｇ、３ｈは回路切替弁、４
ｃ、４ｄは膨張弁、９は圧縮機１から吐出された冷媒が
循環するヒートポンプ回路、１０は逆止弁、１１は水回
路、１２は貯水槽７の給湯水を給湯熱交換器２の間で循
環させる水ポンプ、１３は浴槽８の浴槽水が循環する浴
槽水回路、１４は浴槽９の浴槽水を風呂熱交換器５の間
で循環させる浴槽水ポンプ、１５は時刻検知手段、１６
は運転制御手段である。運転制御手段１６は、時刻検知
手段１５が検知した時刻が深夜時間帯であるとき、圧縮
機１、回路切替弁３ｇ、３ｈ、膨張弁４ｃ、４ｄ、水ポ
ンプ１２、浴槽水ポンプ１４等を制御して、浴槽水の温
熱を給湯水の加熱に利用する風呂熱利用給湯運転を行わ
せる制御手段を行う。(Embodiment 1) FIG. 1 is a diagram showing the configuration of a heat pump bath hot water supply system according to Embodiment 1 of the present invention. In FIG. 1, 3g and 3h are circuit switching valves and 4
c and 4d are expansion valves, 9 is a heat pump circuit through which the refrigerant discharged from the compressor 1 circulates, 10 is a check valve, 11 is a water circuit, and 12 is hot water supplied from the water tank 7 between the hot water heat exchanger 2. , 13 is a bath water circuit in which bath water of the bath 8 circulates, 14 is a bath water pump which circulates bath water of the bath 9 between the bath heat exchangers 5, 15 is time detection means, 16
Is an operation control means. The operation control unit 16 controls the compressor 1, the circuit switching valves 3g and 3h, the expansion valves 4c and 4d, the water pump 12, the bath water pump 14 and the like when the time detected by the time detection unit 15 is in the midnight time zone. Then, the control means for performing the bath heat utilization hot water supply operation in which the hot heat of the bath water is used for heating the hot water supply water is performed.
【００１８】以上のように構成されたヒートポンプ風呂
給湯システムについて、以下その動作、作用を説明す
る。The operation and action of the heat pump bath hot water supply system configured as described above will be described below.
【００１９】図１の構成において、浴槽８の浴槽水の温
熱をヒートポンプサイクルの熱源として、給湯水を冷媒
で加熱する風呂熱利用給湯運転は、以下のように行う。
運転制御手段１６は、ヒートポンプサイクルの熱源とな
る浴槽８の浴槽水を風呂ポンプ１４を動作させて風呂熱
交換器５へ搬送し、同時に冷媒が圧縮機１、給湯熱交換
器２、回路切替弁３ｇ、膨張弁４ｃ、風呂熱交換器５、
逆止弁１０、圧縮機１の順に流れるように、回路切替弁
３ｇ、３ｈの開閉操作を行い、圧縮機１を駆動させる。
圧縮機１から給湯熱交換器２、膨張弁４ｃを通過して風
呂熱交換器５へ流入した低温低圧の冷媒は、風呂熱交換
器５に流入した浴槽水と熱交換して、浴槽水の温熱を吸
熱する。その後、圧縮機１へ吸入されて高温高圧となっ
た冷媒は、給湯熱交換器２で水ポンプ１２で搬送される
給湯水と熱交換して給湯水を加熱する。ここで、回路開
閉弁３ｈは閉の状態とし、冷媒が大気熱交換器６へ流れ
ないようにする。In the structure shown in FIG. 1, the hot water supply operation using bath heat in which the hot water of the bathtub 8 is used as the heat source of the heat pump cycle to heat the hot water with a refrigerant is performed as follows.
The operation control unit 16 operates the bath pump 14 to convey the bath water of the bath 8 that is a heat source of the heat pump cycle to the bath heat exchanger 5, and at the same time, the refrigerant is the compressor 1, the hot water supply heat exchanger 2, and the circuit switching valve. 3g, expansion valve 4c, bath heat exchanger 5,
The circuit switching valves 3g and 3h are opened and closed so that the check valve 10 and the compressor 1 flow in this order, and the compressor 1 is driven.
The low-temperature low-pressure refrigerant that has flowed from the compressor 1 into the bath heat exchanger 5 through the hot water supply heat exchanger 2 and the expansion valve 4c exchanges heat with the bath water that has flowed into the bath heat exchanger 5, and the bath water. It absorbs heat. After that, the refrigerant that has been sucked into the compressor 1 and has become high temperature and high pressure exchanges heat with the hot water supplied by the water pump 12 in the hot water heat exchanger 2 to heat the hot water. Here, the circuit on-off valve 3h is closed so that the refrigerant does not flow to the atmospheric heat exchanger 6.
【００２０】ヒートポンプサイクルは熱源となる浴槽水
の温度が高いほど、ヒートポンプサイクルの効率が高く
なるので、入浴後の比較的高温の浴槽水（約４０℃程
度）を熱源とすることによって、給湯水の加熱を高効率
に行うことができる。また、入浴後の比較的高い浴槽水
と冷媒を風呂熱交換器５で熱交換させると、蒸発した冷
媒の加熱度を大きくすることができる。従って、圧縮機
１で吐出する冷媒の高温化が容易となり、給湯水の高温
加熱を高効率に行うことができる。また、従来の方式
で、大気熱をヒートポンプサイクルの熱源として給湯水
の加熱運転を行っているとき、外気温度が低いときは着
霜による効率低下が発生していたが、本実施例のよう
に、浴槽水を熱源とすることによって、着霜等の効率低
下の要因を排除することができる。In the heat pump cycle, the higher the temperature of the bath water serving as the heat source, the higher the efficiency of the heat pump cycle. Therefore, by using the relatively hot bath water (about 40 ° C.) after bathing as the heat source Can be heated with high efficiency. In addition, when the bath heat exchanger 5 heat-exchanges the relatively high bath water after bathing with the bath heat exchanger 5, the degree of heating of the evaporated coolant can be increased. Therefore, the temperature of the refrigerant discharged from the compressor 1 can be easily raised, and the hot water of the hot water can be heated at high temperature with high efficiency. Further, in the conventional method, when performing the heating operation of the hot water supply by using the atmospheric heat as the heat source of the heat pump cycle, when the outside air temperature was low, the efficiency was reduced due to frost formation. By using the bath water as the heat source, it is possible to eliminate factors such as frost formation that reduce efficiency.
【００２１】電気料金には、深夜時間帯に余剰電力を安
く利用できる制度があり、この深夜時間帯の安い余剰電
力を本装置に利用することで、給湯の運転効率が高い風
呂熱利用給湯運転を、安い電気料金で運転することがで
きる。即ち、時刻検知手段１５によって時刻を検知し、
時刻が電気料金が安く設定された深夜時間帯であると
き、運転制御手段１６で風呂熱利用給湯運転を行わせる
と、高効率な給湯加熱運転を低ランニングコストで行う
ことができる。また、深夜時間帯には、その日の入浴が
終了している場合が多いので、入浴が終了した後の比較
的高い温度の浴槽水を無駄に空気に放熱させることな
く、ヒートポンプサイクルの熱源として給湯水の加熱に
有効に利用することができる。The electricity rate has a system that allows the surplus power to be cheaply used during the midnight hours. By using the surplus power that is cheap during the midnight hours for this device, hot water supply hot water supply operation with high hot water supply operation efficiency can be achieved. Can be driven at a low electricity rate. That is, the time is detected by the time detecting means 15,
If the operation control means 16 causes the hot water supply operation using bath heat to be performed at midnight when the electricity rate is set to be low, the hot water supply heating operation with high efficiency can be performed at low running cost. In addition, since the bathing of the day is often finished in the middle of the night, bath water with a relatively high temperature after the bathing is not wastefully radiated to the air, and it is used as a heat source for the heat pump cycle. It can be effectively used for heating water.
【００２２】以上のように、本実施例においては、時刻
検知手段１５、運転設定手段１６などを設置し、浴槽水
の温熱をヒートポンプサイクルの熱源として、冷媒で給
湯水を加熱する運転を行い、この運転を電気料金が安価
な深夜時間帯を利用して行うこととした。従って、給湯
水の加熱運転を高効率で行い、給湯のランニングコスト
を大幅に低減したヒートポンプ風呂給湯システムとする
ことができる。As described above, in this embodiment, the time detection means 15, the operation setting means 16 and the like are installed, and the operation of heating the hot water with the refrigerant is performed by using the heat of the bath water as the heat source of the heat pump cycle. It was decided that this operation would be performed during the midnight hours when the electricity charges are low. Therefore, it is possible to obtain a heat pump bath hot water supply system in which the heating operation of the hot water supply water is performed with high efficiency and the running cost of hot water supply is significantly reduced.
【００２３】（実施例２）図２は、本発明の実施例２に
おけるヒートポンプ風呂給湯システムの構成図を示すも
のである。図２において、１７は運転制御手段、１８は
使用者が手動で風呂熱利用給湯運転の運転信号を発信さ
せることができる給湯運転設定手段である。給湯運転設
定手段１８はスイッチを有し、使用者が風呂熱利用給湯
運転を行わせるためにスイッチを操作したときに、風呂
熱利用給湯運転の運転信号を発信する。運転制御手段１
７は時刻検知手段１５が検知した時刻が深夜時間帯であ
って、給湯運転設定手段１８から風呂熱利用給湯運転の
運転信号が発信されているときに、風呂熱利用給湯運転
を行う手段である。(Embodiment 2) FIG. 2 is a diagram showing the configuration of a heat pump bath hot water supply system according to Embodiment 2 of the present invention. In FIG. 2, 17 is an operation control means, and 18 is a hot water supply operation setting means by which the user can manually issue an operation signal of a hot water supply operation using bath heat. The hot water supply operation setting means 18 has a switch, and when the user operates the switch to perform the hot water use hot water supply operation, the hot water supply hot water supply operation signal is transmitted. Operation control means 1
Reference numeral 7 is a means for performing hot water supply hot water supply operation when the time detected by the time detection means 15 is in the midnight time zone and the operation signal for hot water supply hot water supply operation is transmitted from the hot water supply operation setting means 18. .
【００２４】以上のように構成されたヒートポンプ風呂
給湯システムについて、以下その動作、作用を説明す
る。The operation and action of the heat pump bath hot water supply system configured as described above will be described below.
【００２５】図２の構成において、浴槽８の浴槽水の温
熱をヒートポンプサイクルの熱源として、給湯水を冷媒
で加熱する風呂熱利用給湯運転は、実施例１で記載した
方法と同様に行う。運転制御手段１７によって、ヒート
ポンプサイクルの熱源となる浴槽８の浴槽水を風呂熱交
換器５へ搬送し、さらに、圧縮機１を駆動させて、給湯
熱交熱交換器２、回路切替弁３ｇ、膨張弁４ｃを通過し
て低温低圧となった冷媒を風呂熱交換器５で浴槽水と熱
交換させる。風呂熱交換器５で浴槽水の温熱を吸熱した
冷媒を、圧縮機１へ吸入させて高温高圧とした後に、給
湯熱交換器２で給湯水と熱交換させて給湯水の加熱を行
う。In the configuration of FIG. 2, the hot water supply operation using the bath heat in which the hot water of the bathtub 8 is used as the heat source of the heat pump cycle to heat the hot water with the refrigerant is performed in the same manner as the method described in the first embodiment. The operation control means 17 conveys the bath water of the bath 8 which is a heat source of the heat pump cycle to the bath heat exchanger 5, and further drives the compressor 1 to supply the hot water heat exchange heat exchanger 2, the circuit switching valve 3g, The low-temperature low-pressure refrigerant that has passed through the expansion valve 4c is exchanged with the bath water in the bath heat exchanger 5. After the refrigerant that has absorbed the heat of the bath water in the bath heat exchanger 5 is sucked into the compressor 1 to have high temperature and high pressure, the hot water heat exchanger 2 exchanges heat with the hot water to heat the hot water.
【００２６】ここで、運転制御手段１７は、使用者が風
呂熱利用給湯運転を行わせるために給湯運転設定手段１
８を操作し、給湯運転設定手段１８から風呂熱利用給湯
運転の運転信号が発信されていても、時刻検知手段１５
の検知する時刻が深夜時間帯になるまで風呂熱利用給湯
運転を待機させる。従って、ヒートポンプサイクルの効
率が高い風呂熱利用給湯運転を、電気料金が安価に設定
されている深夜時間帯に行うことができる。Here, the operation control means 17 uses the hot water supply operation setting means 1 so that the user can perform the hot water supply hot water supply operation.
8 is operated and even if the operation signal for hot water supply hot water supply operation is transmitted from the hot water supply operation setting means 18, the time detection means 15
The hot water supply operation using the bath heat is put on standby until the time detected by is at midnight. Therefore, the hot water supply hot water supply operation with high efficiency of the heat pump cycle can be performed in the midnight time period when the electricity rate is set to be low.
【００２７】また、深夜時間帯であっても、給湯運転設
定手段１８から風呂熱利用給湯運転の運転信号が発信さ
れるまで、運転制御手段１７は風呂熱利用給湯運転を待
機させることとしたので、その日の入浴が深夜時間帯ま
で及んでも、風呂熱利用給湯運転を待機し、使用者が給
湯運転設定手段１８のスイッチを操作し、風呂熱利用給
湯運転の運転信号が発信されてから風呂熱利用給湯運転
を行う。Further, even during the midnight time, the operation control means 17 waits the hot water supply hot water supply operation until the hot water supply hot water supply operation signal is transmitted from the hot water supply operation setting means 18. , Even if the bathing of the day extends to the midnight time, the user waits for the hot water supply hot water supply operation, the user operates the switch of the hot water supply operation setting means 18, and the operation signal for the hot water supply hot water supply operation is transmitted before the bath. Perform hot water supply operation.
【００２８】以上のように、本実施例においては、運転
制御手段１７、給湯運転設定手段１８などを設置し、使
用者が給湯運転設定手段１８を操作して、風呂熱利用給
湯運転の運転信号が発信されている場合であって、時刻
検知手段１５の検知時刻が深夜時間帯であるとき、運転
制御手段１７は風呂熱利用給湯運転を行うこととした。
従って、ヒートポンプサイクルの効率が高い風呂熱利用
給湯運転を、電気料金が安価に設定されている深夜時間
帯に行うことができる。また、その日の入浴が深夜時間
帯に及んでも、給湯運転設定手段１８から風呂熱利用給
湯運転の運転信号が発信されるまで風呂熱利用給湯運転
を待機し、風呂熱利用給湯運転の運転信号が発信されて
から風呂熱利用給湯運転を行うので、利便性が向上した
ヒートポンプ風呂給湯システムとすることができる。As described above, in this embodiment, the operation control means 17, the hot water supply operation setting means 18 and the like are installed, and the user operates the hot water supply operation setting means 18 to provide the operation signal for the hot water supply operation using bath heat. Is transmitted, and when the detection time of the time detection means 15 is in the midnight time period, the operation control means 17 decides to perform the bath heat utilization hot water supply operation.
Therefore, the hot water supply hot water supply operation with high efficiency of the heat pump cycle can be performed in the midnight time period when the electricity rate is set to be low. Further, even if the bathing of the day extends to the midnight time, the bath heat utilization hot water supply operation is kept on standby until the hot water utilization hot water supply operation signal is transmitted from the hot water supply operation setting means 18, and the bath heat utilization hot water supply operation signal is issued. Since the bath heat-utilizing hot water supply operation is performed after the message is transmitted, it is possible to provide a heat pump bath hot water supply system with improved convenience.
【００２９】（実施例３）図３は、本発明の実施例３に
おけるヒートポンプ風呂給湯システムの構成図を示すも
のである。図３において、１９は時刻検知手段１５が検
知した時刻が深夜時間帯であって、給湯運転設定手段１
８から風呂熱利用給湯運転の運転信号が発信されていな
いときに、大気熱をヒートポンプサイクルの熱源とし、
冷媒で給湯水を加熱する大気熱利用給湯運転を行わせる
運転制御手段である。(Embodiment 3) FIG. 3 is a diagram showing the configuration of a heat pump bath hot water supply system according to Embodiment 3 of the present invention. In FIG. 3, reference numeral 19 indicates the time detected by the time detection means 15 in the midnight time zone, and the hot water supply operation setting means 1
When the operation signal for hot water supply operation using bath heat is not transmitted from 8, the atmospheric heat is used as the heat source of the heat pump cycle,
It is an operation control means for performing a hot water supply operation using atmospheric heat to heat the hot water supply with a refrigerant.
【００３０】以上のように構成されたヒートポンプ風呂
給湯システムについて、以下その動作、作用を説明す
る。The operation and action of the heat pump bath hot water supply system configured as described above will be described below.
【００３１】図３の構成において、浴槽８の浴槽水の温
熱をヒートポンプサイクルの熱源として、給湯水を冷媒
で加熱する風呂熱利用給湯運転は、実施例１で記載した
方法と同様に行う。また、大気熱をヒートポンプサイク
ルの熱源として、給湯水を冷媒で加熱する大気熱利用給
湯運転は、以下の方法で行う。運転制御手段１９によっ
て、ヒートポンプサイクルの熱源となる大気と、給湯熱
交換器２、回路切替弁３ｈ、膨張弁４ｄを通過して低温
低圧となった冷媒を大気熱交換器６で熱交換させる。大
気熱交換器６で大気熱を吸熱した冷媒を、圧縮機１へ吸
入させて高温高圧とした後に、給湯熱交換器２で給湯水
と熱交換させて給湯水の加熱を行う。In the structure shown in FIG. 3, the hot water supply operation of bath water in which the hot water of the bath water in the bathtub 8 is used as the heat source of the heat pump cycle to heat the hot water with the refrigerant is performed in the same manner as the method described in the first embodiment. Further, the atmospheric heat utilizing hot water supply operation in which the hot water is heated by the refrigerant using the atmospheric heat as the heat source of the heat pump cycle is performed by the following method. The operation control unit 19 causes the atmospheric heat exchanger 6 to exchange heat with the atmosphere serving as a heat source of the heat pump cycle and the refrigerant that has passed through the hot water supply heat exchanger 2, the circuit switching valve 3h, and the expansion valve 4d and has become low temperature and low pressure. The refrigerant that has absorbed atmospheric heat in the atmospheric heat exchanger 6 is sucked into the compressor 1 to have a high temperature and high pressure, and then the hot water heat exchanger 2 exchanges heat with the hot water to heat the hot water.
【００３２】入浴するための浴槽９のお湯張りは、家庭
の給湯負荷の多くを占める。従って、貯水槽７の高温の
給湯水を使って浴槽９へお湯張りを行うと、貯水槽７の
残湯は僅かとなる。この後、入浴中にシャワー等を大量
に使用すると、貯水槽７の湯切れを起こしてしまう。し
かしながら、本実施例においては、給湯運転設定手段１
８から風呂熱利用給湯運転の運転信号が発信されていな
いときに、運転制御手段１９によって大気熱利用給湯運
転を行うので、深夜時間帯の入浴中であっても貯水槽７
には温度の高い給湯水が貯水されるため、入浴中の湯切
れを防ぐことができる。The filling of the bathtub 9 for bathing occupies most of the hot water supply load at home. Therefore, when the hot water of the water storage tank 7 is used to fill the bathtub 9 with hot water, the amount of remaining hot water in the water storage tank 7 becomes small. After that, if a large amount of shower or the like is used while taking a bath, the hot water in the water storage tank 7 will run out. However, in the present embodiment, the hot water supply operation setting means 1
When the operation signal for the bath heat utilization hot water supply operation is not transmitted from 8, the operation control means 19 performs the atmospheric heat utilization hot water supply operation, so that the water tank 7 can be used even while taking a bath in the middle of the night.
Because hot water with a high temperature is stored in the bath, it is possible to prevent hot water from running out during bathing.
【００３３】深夜時間帯であっても、給湯運転設定手段
１８から風呂熱利用給湯運転の運転信号が発信されるま
で給湯水を加熱する運転を待機していると、深夜時間帯
に貯水槽７の給湯水の沸き上げを完了できない場合があ
る。このとき、貯水槽７の給湯水の沸き上げを完了する
まで、深夜時間帯を過ぎて運転すると、電気料金が高い
料金体系が適用されるので、ランニングコストが高くな
り、また、深夜時間帯のみに装置の運転を行うこととす
ると、貯水槽７に高温の十分が給湯水が貯えられないた
めに、貯水槽７の湯切れを起こす可能性がある。そこ
で、本実施例のように、深夜時間帯であって、給湯運転
設定手段１８から風呂熱利用給湯運転の運転信号が発信
されるまで、大気熱利用給湯運転を行って貯水槽７に高
温の給湯水を貯めるようにすれば、深夜時間帯に給湯水
の沸き上げを完了するとともに、貯水槽７の湯切れを防
止することができる。Even in the midnight time, if the operation for heating the hot water supply is on standby until the hot water supply operation hot water supply operation signal is transmitted from the hot water supply operation setting means 18, the water tank 7 is in the midnight time. In some cases, boiling water may not be completed. At this time, if you drive past the midnight time period until the boiling of the hot water supply water in the water tank 7 is completed, a high electricity rate charge system will be applied, resulting in higher running costs and only during the midnight time period. If the device is operated at a high temperature, the hot water in the water tank 7 may not be stored in the water tank 7 at a sufficiently high temperature, so that the hot water in the water tank 7 may run out. Therefore, as in the present embodiment, during the midnight time, until the operation signal for the bath heat utilization hot water supply operation is transmitted from the hot water supply operation setting means 18, the atmospheric heat utilization hot water supply operation is performed to keep the high temperature in the water tank 7. If the hot water is stored, the boiling of the hot water can be completed at midnight and the hot water in the water tank 7 can be prevented.
【００３４】以上のように、本実施例においては、運転
制御手段１９などを設置し、運転制御手段１９は、時刻
検知手段１５の検知時刻が深夜時間帯であって、給湯運
転設定手段１８から風呂熱利用給湯運転の運転信号が発
信されていないときに、大気熱利用給湯運転を行わせる
こととした。従って、風呂熱利用給湯運転を待機してい
るときでも、貯水槽７に高温の給湯水を貯えることがで
きる。従って、深夜時間帯を有効に利用して貯水槽７の
沸き上げを完了し、給湯のランニングコストを大幅に低
減したヒートポンプ風呂給湯システムとすることができ
る。As described above, in the present embodiment, the operation control means 19 and the like are installed, and the operation control means 19 detects the time detected by the time detection means 15 in the midnight time zone and outputs the hot water supply operation setting means 18 from the hot water supply operation setting means 18. When the operation signal for the bath heat hot water supply operation is not transmitted, it was decided to perform the atmospheric heat hot water supply operation. Therefore, hot water can be stored in the water storage tank 7 even when the bath heat utilization hot water supply operation is on standby. Therefore, it is possible to obtain a heat pump bath hot water supply system in which the boiling of the water storage tank 7 is completed by effectively utilizing the midnight time zone and the running cost of hot water supply is significantly reduced.
【００３５】（実施例４）図４は、本発明の実施例４に
おけるヒートポンプ風呂給湯システムの構成図を示すも
のである。図４において、２０は運転制御手段、２１は
運転予約手段であり、使用者が手動で風呂熱利用給湯運
転を開始する時刻を予約することができる手段であり、
運転予約手段２１に予約した時刻になったら、給湯運転
設定手段１８から風呂熱利用給湯運転の運転信号を発信
させる。運転制御手段２０は、時刻検知手段１５が深夜
時間帯を検知しているときであって、給湯運転設定手段
１８から風呂熱利用給湯運転の運転信号が発信されてい
ないときは、大気熱利用給湯運転を行い、運転予約手段
２１に予約された時刻に達して、給湯運転設定手段１８
から風呂熱利用給湯運転の運転信号が発信されたとき
は、大気熱利用給湯運転を停止し、風呂熱利用給湯運転
を行わせる制御手段である。(Embodiment 4) FIG. 4 is a block diagram of a heat pump bath hot water supply system in Embodiment 4 of the present invention. In FIG. 4, 20 is an operation control means, 21 is an operation reservation means, and is a means by which the user can manually reserve the time to start the bath heat utilization hot water supply operation,
When the time reserved by the driving reservation means 21 arrives, the hot water supply operation setting means 18 causes the operation signal for the bath heat utilization hot water supply operation to be transmitted. When the time detection unit 15 is detecting the midnight time period and the hot water supply operation setting unit 18 does not transmit the operation signal for the bath heat utilization hot water supply operation, the operation control unit 20 supplies atmospheric heat utilization hot water. The operation is performed, and when the time reserved by the operation reservation means 21 is reached, the hot water supply operation setting means 18
When the operation signal for the bath heat utilizing hot water supply operation is transmitted from the air conditioner, it is a control means for stopping the atmospheric heat utilizing hot water supply operation and performing the bath heat utilizing hot water supply operation.
【００３６】以上のように構成されたヒートポンプ風呂
給湯システムについて、以下その動作、作用を説明す
る。The operation and action of the heat pump bath hot water supply system configured as described above will be described below.
【００３７】深夜時間帯であっても、給湯運転設定手段
１８から風呂熱利用給湯運転の運転信号が発信されるま
で給湯水を加熱する運転を待機していると、深夜時間帯
に貯水槽７の給湯水の沸き上げを完了できない場合があ
る。このとき、貯水槽７の給湯水の沸き上げを完了する
まで、深夜時間帯を過ぎて運転すると、電気料金が高い
料金体系が適用されるので、ランニングコストが高くな
り、また、深夜時間帯のみに装置の運転を行うこととす
ると、貯水槽７に高温の十分が給湯水が貯えられないた
めに、貯水槽７の湯切れを起こす可能性がある。そこ
で、本実施例のように、深夜時間帯であって、給湯運転
設定手段１８から風呂熱利用給湯運転の運転信号が発信
されるまで、大気熱利用給湯運転を行い貯水槽７に高温
の給湯水を貯めるようにすれば、深夜時間帯に給湯水の
沸き上げを完了するとともに、貯水槽７の湯切れを防止
することができる。Even in the midnight time, when the operation for heating the hot water is waiting until the hot water supply hot water supply operation signal is transmitted from the hot water supply operation setting means 18, the water tank 7 is in the midnight time. In some cases, boiling water may not be completed. At this time, if you drive past the midnight time period until the boiling of the hot water supply water in the water tank 7 is completed, a high electricity rate charge system will be applied, resulting in higher running costs and only during the midnight time period. If the device is operated at a high temperature, the hot water in the water tank 7 may not be stored in the water tank 7 at a sufficiently high temperature, so that the hot water in the water tank 7 may run out. Therefore, as in the present embodiment, during the midnight time, until the operation signal for the bath heat utilization hot water supply operation is transmitted from the hot water supply operation setting means 18, the atmospheric heat utilization hot water supply operation is performed and the hot water supply to the water storage tank 7 is performed. By storing water, it is possible to complete boiling of the hot water for hot water supply at the midnight time and prevent running out of hot water in the water storage tank 7.
【００３８】また、予め予約した時刻に風呂熱利用給湯
運転を行うので、使用者がその日の入浴の終了を待っ
て、風呂熱利用給湯運転を行わせるための操作を行わな
くても、自動的に風呂熱利用給湯運転を行わせることが
できる。さらに、運転予約手段２１を設けたことによ
り、その日の入浴が終了したときに、使用者が給湯運転
設定手段に大気熱利用給湯運転を行わせる操作を忘れて
いても、自動的に効率の高い風呂熱利用給湯運転を行う
ことができる。Further, since the hot-water hot-water supply operation is performed at the reserved time in advance, even if the user does not perform the operation to perform the hot-water hot-supply operation after waiting for the bathing of the day It is possible to make the bath hot water supply operation. Further, by providing the operation reservation means 21, even if the user forgets the operation for causing the hot water supply operation setting means to perform the atmospheric heat utilization hot water supply operation when the bathing of the day is completed, the efficiency is automatically high. You can perform hot water supply operation using bath heat.
【００３９】以上のように、本実施例においては、運転
制御手段２０、運転予約手段２１などを設置し、使用者
が運転予約手段２１で設定した風呂熱利用給湯運転の開
始時刻に時刻が達していない場合は、運転制御手段２０
は大気熱利用給湯運転を行い、予約時間になったら風呂
熱利用給湯運転を行うとしたので、風呂熱利用給湯運転
を行わない状態でも、貯水槽７に温度の高い給湯水を貯
えることができる。従って、貯水槽７の湯切れを防止す
ることができる。また、予約した時刻になったら、大気
熱利用給湯運転から風呂熱利用給湯運転へと切り替わる
ので、装置の運転効率が高い風呂熱利用給湯運転を行う
ことができる。従って、貯水槽７の湯切れを防止し、給
湯のランニングコストを大幅に低減したヒートポンプ風
呂給湯システムとすることができる。また、予め風呂熱
利用給湯運転を行う時刻を予約できるので、その日の入
浴が終了を待って、使用者が風呂熱利用給湯運転を行わ
せるための操作を行わなくても、自動的に効率の高い風
呂熱利用給湯運転を行うことができる。As described above, in this embodiment, the operation control means 20, the operation reservation means 21 and the like are installed, and the time reaches the start time of the bath heat utilization hot water supply operation set by the user in the operation reservation means 21. If not, the operation control means 20
Since the hot water supply operation using the atmospheric heat is performed and the bath heat use hot water supply operation is performed at the reserved time, it is possible to store hot water having a high temperature in the water tank 7 even when the bath heat use hot water supply operation is not performed. . Therefore, the hot water in the water storage tank 7 can be prevented. Further, when the reserved time comes, the hot-water supply hot-water supply operation is switched from the air-heat use hot-water supply operation to the bath-heat use hot-water supply operation. Therefore, it is possible to provide a heat pump bath hot water supply system that prevents running out of hot water in the water storage tank 7 and greatly reduces the running cost of hot water supply. In addition, since it is possible to reserve the time to perform hot water supply hot water supply operation in advance, even if the user does not wait for the end of the day's bathing to perform the bath heat use hot water supply operation It is possible to perform hot water supply operation using high bath heat.
【００４０】（実施例５）図５は、本発明の実施例５に
おけるヒートポンプ風呂給湯システムの構成図を示すも
のである。図５において、２２は運転制御手段、２３は
使用者が手動で風呂熱利用給湯運転の運転信号を発信さ
せることができる優先運転設定手段である。優先運転設
定手段２３はスイッチを有し、使用者が風呂熱利用給湯
運転を行わせるためにスイッチを操作したときに、風呂
熱利用給湯運転の運転信号を発信する。運転制御手段２
２は時刻検知手段１５が検知した時刻に関わらず、優先
運転設定手段２３から風呂熱利用給湯運転の運転信号が
発信されているときに、風呂熱利用給湯運転を優先させ
て行う手段である。(Embodiment 5) FIG. 5 shows a block diagram of a heat pump bath hot water supply system in embodiment 5 of the present invention. In FIG. 5, 22 is an operation control means, and 23 is a priority operation setting means by which a user can manually send an operation signal of a bath heat utilization hot water supply operation. The priority operation setting means 23 has a switch, and when the user operates the switch to perform the bath heat utilizing hot water supply operation, it emits a bath heat utilizing hot water supply operation signal. Operation control means 2
Reference numeral 2 is a means for giving priority to the bath heat utilization hot water supply operation when the operation signal of the bath heat utilization hot water supply operation is transmitted from the priority operation setting means 23 regardless of the time detected by the time detection means 15.
【００４１】以上のように構成されたヒートポンプ風呂
給湯システムについて、以下その動作、作用を説明す
る。The operation and action of the heat pump bath hot water supply system configured as described above will be described below.
【００４２】使用者が、朝、あるいは、昼間などの時間
帯に入浴すると、朝、あるいは、昼間に多量の貯水槽７
の高温の給湯水が利用されるため、大気熱利用給湯運
転、あるいは、風呂熱利用給湯運転を行って貯水槽７に
高温の給湯水の補充を行わない貯水槽７の湯切れを起こ
す可能性がある。また、朝、あるいは、昼間の入浴が終
了し、風呂熱利用給湯運転を深夜時間帯まで待機して行
っても、浴槽９の浴槽水の温度は下がっているので、ヒ
ートポンプサイクルの高効率な運転を行うことができな
い。そこで、朝や昼間などの時間帯に入浴した場合、使
用者が入浴が終了した時点で、風呂熱利用給湯運転を行
わせるために優先運転設定手段２３のスイッチ操作をす
ると、風呂熱利用給湯運転の運転信号が発信され、運転
制御手段２２は時刻検知手段１５が検知した時刻が深夜
時間帯でなくても、風呂熱利用給湯運転を行う。従っ
て、入浴後の温度の高い浴槽水を温熱を放熱させること
なく給湯水の加熱に有効利用できるとともに、貯水槽７
の湯切れを防止することができる。When the user takes a bath in the morning or during the daytime, a large amount of the water storage tank 7 in the morning or during the daytime.
Since hot water of high temperature is used, there is a possibility of running out of hot water in the water tank 7 that does not replenish hot water to the water tank 7 by performing hot air hot water hot water supply operation or bath heat hot water supply operation There is. Further, even if the bathing in the morning or the daytime is finished and the hot water using hot water is kept waiting until the midnight time, the temperature of the bath water in the bathtub 9 is still low, so that the heat pump cycle can be operated with high efficiency. Can't do. Therefore, when the user takes a bath in the morning or daytime, when the user finishes bathing, he / she operates the switch of the priority operation setting means 23 in order to perform the bath heat utilization hot water supply operation. The operation control means 22 performs the hot water supply hot water supply operation even when the time detected by the time detection means 15 is not in the midnight time zone. Therefore, the bath water having a high temperature after bathing can be effectively used for heating the hot water without radiating the heat, and the water tank 7
It is possible to prevent running out of hot water.
【００４３】風呂熱利用給湯運転は、浴槽８の浴槽水の
温熱を冷媒に吸熱させて行うため、浴槽８の浴槽水の温
度は、運転時刻の経過とともに低下する。そこで、入浴
する際の浴槽８の温度が好みの温度より高い場合は、使
用者が風呂熱利用給湯運転を行わせるために優先運転設
定手段２３のスイッチ操作をすると、風呂熱利用給湯運
転の運転信号が発信され、運転制御手段２２は時刻検知
手段１５が検知した時刻が深夜時間帯でなくても、風呂
熱利用給湯運転を行うので、浴槽水の温度を好みの温度
まで下げることができる。また、このとき浴槽水より奪
われた熱は、ヒートポンプサイクルを利用して効率よく
貯水槽７に高温の給湯水として貯えられる。従来は、浴
槽８の温度が好みの温度より高い場合は、低い温度の水
を加えて温度を下げていたが、本実施例の方式により、
浴槽水の熱量、加える水の無駄を省くことができる。Since the hot water supply operation using bath heat is performed by causing the refrigerant to absorb the heat of the bath water in the bath 8, the temperature of the bath water in the bath 8 decreases with the passage of operating time. Therefore, when the temperature of the bathtub 8 at the time of bathing is higher than the desired temperature, when the user operates the switch of the priority operation setting means 23 in order to perform the bath heat utilization hot water supply operation, the bath heat utilization hot water supply operation is performed. Even if the time signal detected by the time detection unit 15 is not in the midnight time period, the operation control unit 22 performs the bath heat utilization hot water supply operation, so that the temperature of the bath water can be lowered to a desired temperature. Further, at this time, the heat taken from the bath water is efficiently stored in the water storage tank 7 as high-temperature hot water by using the heat pump cycle. Conventionally, when the temperature of the bathtub 8 is higher than the desired temperature, the temperature is lowered by adding low temperature water. However, according to the method of this embodiment,
It is possible to reduce the amount of heat in the bath water and waste of added water.
【００４４】また、使用者が浴槽９にお湯が張られてい
るにもかかわらず、浴槽９へ入らず、シャワーのみを使
う場合は、貯水槽７の高温の給湯水を大量に使うため、
貯水槽７の湯切れを起こす可能性がある。この場合、使
用者は風呂熱利用給湯運転を行わせるために優先運転設
定手段２３のスイッチ操作をすると、風呂熱利用給湯運
転の運転信号が発信され、運転制御手段２２は時刻検知
手段１５が検知した時刻が深夜時間帯でなくても、風呂
熱利用給湯運転を行うので、貯水槽７に高温の給湯水を
貯水することができる。従って、多量にシャワー等を利
用しても、貯水槽７の湯切れを防止することができる。When the user does not enter the bathtub 9 and uses only the shower even though the bathtub 9 is filled with hot water, a large amount of high-temperature hot water in the water tank 7 is used.
There is a possibility of running out of hot water in the water tank 7. In this case, when the user operates the switch of the preferential operation setting means 23 in order to perform the hot water use hot water supply operation, the operation signal of the hot water use hot water supply operation is transmitted, and the operation control means 22 detects the time detection means 15. Even when it is not in the midnight time, the hot water supply operation using the bath heat is performed, so that the hot water supply water can be stored in the water storage tank 7. Therefore, even if a large amount of shower or the like is used, the hot water in the water storage tank 7 can be prevented from running out.
【００４５】以上のように、本実施例においては、運転
制御手段２２、優先運転設定手段２３などを設置し、使
用者が風呂熱利用給湯運転を行わせるために優先運転設
定手段２３のスイッチ操作をすると、風呂熱利用給湯運
転の運転信号が発信され、運転制御手段２２は時刻検知
手段１５が検知した時刻が深夜時間帯でなくても、風呂
熱利用給湯運転を行うとした。従って、朝、あるいは、
昼間などに入浴した場合であっても、風呂熱利用給湯運
転を行って貯水槽７に高温の給湯水を貯めるので、貯水
槽７の湯切れを防止することができる。また、入浴者が
入浴する際に浴槽８の温度が好みの温度より高い場合
は、風呂熱利用給湯運転を実行することにより、浴槽水
の温度を好みの温度まで下げることができる。また、こ
のとき浴槽水より奪われた熱は、貯水槽７に高温の給湯
水の熱として貯えられるから、熱量と水の無駄を省くこ
とができるばかりでなく、入浴中の貯水槽７の湯切れを
防止することができる。従って、熱と水の無駄をなく
し、貯水槽７の湯切れがない、給湯のランニングコスト
を大幅に低減したヒートポンプ風呂給湯システムとする
ことができる。As described above, in the present embodiment, the operation control means 22, the priority operation setting means 23, etc. are installed, and the switch operation of the priority operation setting means 23 is performed in order to allow the user to perform the hot water supply hot water supply operation. Then, the operation signal for the bath heat-utilizing hot water supply operation is transmitted, and the operation control unit 22 performs the bath heat-utilizing hot water supply operation even if the time detected by the time detection unit 15 is not in the midnight time zone. Therefore, in the morning, or
Even when the user takes a bath in the daytime, the hot water supply operation using the bath heat is performed to store the high-temperature hot water in the water storage tank 7, so that the hot water in the water storage tank 7 can be prevented from running out. When the temperature of the bathtub 8 is higher than the desired temperature when the bather takes a bath, the temperature of the bathtub water can be lowered to the desired temperature by executing the hot water supply operation using the bath heat. Further, at this time, the heat taken from the bath water is stored in the water storage tank 7 as the heat of the hot water for hot water supply, so that not only the amount of heat and waste of water can be saved, but also the water in the water storage tank 7 during bathing. It can prevent breakage. Therefore, it is possible to provide a heat pump bath hot water supply system that eliminates waste of heat and water, does not run out of hot water in the water storage tank 7, and greatly reduces the running cost of hot water supply.
【００４６】（実施例６）図６は、本発明の実施例６に
おけるヒートポンプ風呂給湯システムの構成図を示すも
のである。図６において、２４は大気の温度を検知する
温度センサー、２５は浴槽水の温度を検知する温度セン
サー、２６は運転制御手段である。運転制御手段２６
は、時刻検知手段１５が深夜時間帯を検知している場合
であって、給湯運転設定手段１８から風呂熱利用給湯運
転の運転信号を発信されているときに、温度センサー２
５が検知した浴槽水の温度Ｔ１と、温度センサー２４が
検知した大気の温度Ｔ２を比較し、Ｔ１＞Ｔ２となる場
合は風呂熱利用給湯運転を行い、Ｔ１≦Ｔ２の場合は、
大気熱利用給湯運転を行う運転制御手段である。本実施
例では、温度センサー２４、２５をサーミスタとした
が、熱電対、あるいは測温抵抗体を用いることもでき
る。(Embodiment 6) FIG. 6 is a diagram showing the configuration of a heat pump bath hot water supply system in Embodiment 6 of the present invention. In FIG. 6, 24 is a temperature sensor that detects the temperature of the atmosphere, 25 is a temperature sensor that detects the temperature of bath water, and 26 is an operation control means. Operation control means 26
When the time detection unit 15 detects the midnight time zone and the hot water supply operation setting unit 18 outputs the operation signal of the hot water supply hot water supply operation, the temperature sensor 2
The temperature T1 of the bath water detected by 5 and the temperature T2 of the atmosphere detected by the temperature sensor 24 are compared. If T1> T2, the bath heat utilization hot water supply operation is performed, and if T1 ≦ T2,
It is an operation control means for performing hot water supply operation using atmospheric heat. In this embodiment, the temperature sensors 24 and 25 are thermistors, but thermocouples or resistance temperature detectors may be used.
【００４７】以上のように構成されたヒートポンプ風呂
給湯システムについて、以下その動作、作用を説明す
る。The operation and action of the heat pump bath hot water supply system configured as described above will be described below.
【００４８】図６の構成において、浴槽８の浴槽水の温
熱をヒートポンプサイクルの熱源として、給湯水を冷媒
で加熱する風呂熱利用給湯運転は、実施例１で記載した
方法と同様に行う。風呂熱利用給湯運転を実行すると、
浴槽８の浴槽水の温熱は冷媒に吸熱されるので、浴槽水
の温度は運転時刻の経過とともに低下していく。従っ
て、ヒートポンプサイクルの熱源となる浴槽水温度の低
下とともに、ヒートポンプサイクルの効率が低下する。
一般的に、ヒートポンプサイクルの効率は、熱源の温度
が高い程高くなる。従って、風呂熱利用給湯運転を行っ
ているときに、浴槽水の温度Ｔ１と大気の温度Ｔ２を温
度センサー２４、２５で比較し、Ｔ１＜Ｔ２となった場
合は、大気熱利用給湯運転へ運転を切り替えることによ
って、ヒートポンプサイクルの効率を向上させることで
きる。また、風呂熱利用給湯運転を行う直前でも、既に
浴槽水温度より大気温度が高い場合は大気熱利用給湯運
転を実行することによって、ヒートポンプ風呂給湯シス
テムを高効率で運転させることできる。In the configuration of FIG. 6, the hot water supply operation using the bath heat in which the hot water of the bath water in the bathtub 8 is used as the heat source of the heat pump cycle to heat the hot water with the refrigerant is performed in the same manner as the method described in the first embodiment. When you use hot water using hot water,
Since the heat of the bath water in the bath 8 is absorbed by the refrigerant, the temperature of the bath water decreases with the passage of operating time. Therefore, the efficiency of the heat pump cycle decreases as the temperature of the bath water serving as the heat source of the heat pump cycle decreases.
Generally, the efficiency of a heat pump cycle increases as the temperature of the heat source increases. Therefore, while the bath heat utilizing hot water supply operation is being performed, the temperature T1 of the bath water and the atmospheric temperature T2 are compared by the temperature sensors 24 and 25, and when T1 <T2, the operation is switched to the air heat utilizing hot water supply operation. The efficiency of the heat pump cycle can be improved by switching. Also, immediately before the hot water supply operation using bath heat is used, if the atmospheric temperature is already higher than the bath water temperature, the hot water supply operation using atmospheric heat can be executed to operate the heat pump bath hot water supply system with high efficiency.
【００４９】以上のように、本実施例においては、温度
センサー２４、２５、運転制御手段２６などを設置し、
運転制御手段２６は温度センサー２５の検知した浴槽水
温度Ｔ１が、温度センサー２４の検知した大気温度Ｔ２
に対して、Ｔ１＞Ｔ２となるとき風呂熱利用給湯運転を
実行し、Ｔ１≦Ｔ２となるとき大気熱利用給湯運転を実
行することとしたので、ヒートポンプサイクルの熱源と
なる温度が高い方を選択して給湯水の加熱運転を行うこ
とができる。従って、運転効率が高いヒートポンプ風呂
給湯システムとすることができる。As described above, in this embodiment, the temperature sensors 24 and 25, the operation control means 26, etc. are installed,
The operation control means 26 determines that the bath water temperature T1 detected by the temperature sensor 25 is the atmospheric temperature T2 detected by the temperature sensor 24.
On the other hand, when T1> T2, the bath heat utilization hot water supply operation is executed, and when T1 ≦ T2, the atmospheric heat utilization hot water supply operation is executed. Therefore, the one having a higher temperature as the heat source of the heat pump cycle is selected. Then, the heating operation of the hot water can be performed. Therefore, the heat pump bath hot water supply system having high operation efficiency can be provided.
【００５０】また、本実施例においては、風呂熱利用給
湯運転を実行する温度条件をＴ１＞Ｔ２としたが、風呂
熱交換器６と大気熱交換器６の圧力損失や、伝熱面積に
よって、Ｔ１＞Ｔ２の条件でも温度差（Ｔ１−Ｔ２）が
小さい場合は、大気熱利用給湯運転の運転効率が高くな
る場合がある。この場合は、風呂熱利用給湯運転の効率
＞大気熱利用給湯運転の効率、となる場合の浴槽水温度
と大気温度を求め、補正値αを加算した条件（Ｔ１＋α
＞Ｔ２）で、風呂熱利用給湯運転を実行することとし
た。Further, in the present embodiment, the temperature condition for executing the hot water supply operation using bath heat is T1> T2. However, depending on the pressure loss of the bath heat exchanger 6 and the atmospheric heat exchanger 6 and the heat transfer area, If the temperature difference (T1−T2) is small even under the condition of T1> T2, the operating efficiency of the atmospheric heat utilization hot water supply operation may increase. In this case, the condition (T1 + α) is obtained in which the bath water temperature and the atmospheric temperature are obtained when the efficiency of hot water supply operation using bath heat> the efficiency of hot water supply operation using atmospheric heat is satisfied, and the correction value α is added.
> T2), it is decided to execute a hot water supply hot water supply operation.
【００５１】また、本実施例の風呂熱利用給湯運転と大
気熱利用給湯運転は、深夜時間帯に行ったときの例であ
るが、実施例５の優先運転設定手段２３から風呂熱利用
給湯運転の運転信号が発信されているときでも、温度セ
ンサー２５の検知した浴槽水温度Ｔ１が、温度センサー
２４の検知した大気温度Ｔ２に対して、Ｔ１＞Ｔ２とな
るとき風呂熱利用給湯運転を行い、Ｔ１≦Ｔ２となると
き大気熱利用給湯運転を行うこととすると、深夜時間帯
以外で動作するヒートポンプ風呂給湯システムを高効率
な状態で運転することができる。The bath heat utilization hot water supply operation and the atmospheric heat utilization hot water supply operation of the present embodiment are examples when they are performed in the middle of the night, but the bath heat utilization hot water supply operation is performed from the priority operation setting means 23 of the fifth embodiment. Even when the operation signal of is transmitted, when the bath water temperature T1 detected by the temperature sensor 25 is T1> T2 with respect to the atmospheric temperature T2 detected by the temperature sensor 24, the bath heat utilization hot water supply operation is performed, If the hot water supply operation using the atmospheric heat is performed when T1 ≦ T2, the heat pump bath hot water supply system that operates at a time other than midnight can be operated in a highly efficient state.
【００５２】（実施例７）図７は、本発明の実施例７に
おけるヒートポンプ風呂給湯システムの構成図を示すも
のである。２７は浴槽８の浴槽水位を検知する水位セン
サー、２８は運転制御手段である。運転制御手段２８
は、時刻検知手段１５が深夜時間帯を検知している場合
であって、給湯運転設定手段１８から風呂熱利用給湯運
転の運転信号を発信されているときに、水位センサー２
７が検知した浴槽８の浴槽水水位Ｈと、予め運転制御手
段２８に設定した浴槽水水位の下限水位Ｌを比較し、Ｈ
＞Ｌとなる場合は風呂熱利用給湯運転を行い、Ｈ≦Ｌの
場合は、大気熱利用給湯運転を行う手段である。(Embodiment 7) FIG. 7 is a diagram showing the configuration of a heat pump bath hot water supply system in Embodiment 7 of the present invention. 27 is a water level sensor for detecting the water level of the bathtub in the bathtub 8, and 28 is an operation control means. Operation control means 28
Is the case where the time detection means 15 detects the midnight time zone, and when the hot water supply operation setting means 18 is issuing the operation signal of the bath heat utilization hot water supply operation, the water level sensor 2
7 compares the bathtub water level H of the bathtub 8 detected by 7 with the lower limit water level L of the bathtub water level preset in the operation control means 28,
It is a means for performing hot water supply hot water supply operation when> L, and performing atmospheric heat use hot water supply operation when H ≦ L.
【００５３】以上のように構成されたヒートポンプ風呂
給湯システムについて、以下その動作、作用を説明す
る。The operation and action of the heat pump bath hot water supply system configured as described above will be described below.
【００５４】図７の構成において、浴槽８の浴槽水の温
熱をヒートポンプサイクルの熱源として、給湯水を冷媒
で加熱する風呂熱利用給湯運転は、実施例１で記載した
方法と同様に行う。しかしながら、浴槽８の浴槽水の水
位が低い場合に、風呂熱利用給湯運転を行うと、浴槽水
の熱容量が少ないために浴槽水温度は直ちに低下し、ヒ
ートポンプサイクルの効率が低下する。また、浴槽水の
水位が低く、風呂熱交換器５へ浴槽水が十分に供給され
ないときは、浴槽水から温熱を吸熱して給湯水を加熱す
ることができなくなるばかりでなく、滞留する浴槽水が
凍結し風呂熱交換器５を破損させる恐れがある。そこ
で、水位センサー２７で浴槽８の浴槽水位を検知し、運
転制御手段２８は検知した水位Ｈが予め設定した下限水
位Ｌに対して、Ｈ＞Ｌとなる場合に限定して風呂熱利用
給湯運転を実行し、Ｈ≦Ｌとなる場合には大気熱利用給
湯運転を実行することとした。従って、風呂熱利用給湯
運転を浴槽８の水位が低い場合に実行したときに発生す
ると想定される風呂熱交換器５の凍結による破損を未然
に防ぐことができる。In the structure of FIG. 7, the hot water supply operation using bath heat in which the hot water of the bath water of the bath 8 is used as the heat source of the heat pump cycle to heat the hot water with the refrigerant is performed in the same manner as the method described in the first embodiment. However, when the bath water utilizing the hot water supply operation is performed when the water level of the bath water in the bathtub 8 is low, the bath water temperature immediately decreases because the heat capacity of the bath water is small, and the efficiency of the heat pump cycle decreases. In addition, when the water level of the bath water is low and the bath water is not sufficiently supplied to the bath heat exchanger 5, not only is it impossible to heat the hot water by absorbing the heat from the bath water, but also the accumulated bath water. May freeze and damage the bath heat exchanger 5. Therefore, the bath water level of the bathtub 8 is detected by the water level sensor 27, and the operation control unit 28 limits the detected water level H to H> L with respect to the preset lower limit water level L, and uses the bath heat utilizing hot water supply operation. And when H ≦ L, the hot air supply hot water supply operation is executed. Therefore, it is possible to prevent damage caused by freezing of the bath heat exchanger 5, which is supposed to occur when the bath heat utilization hot water supply operation is executed when the water level of the bathtub 8 is low.
【００５５】以上のように、本実施例においては、水位
センサー２７、運転制御手段２８などを設置し、運転制
御手段２８は水位センサー２７の検知した浴槽８の水位
Ｈが、予め設定した下限水位Ｌに対して、Ｈ＞Ｌとなる
とき風呂熱利用給湯運転を行い、Ｈ≦Ｌとなるとき大気
熱利用給湯運転を行うこととしたので、浴槽８の浴槽水
水位が低くなった場合は、ヒートポンプサイクルの熱源
を浴槽水の温熱から大気熱へと切り替えて給湯水の加熱
運転を行うことができる。従って、風呂熱交換器５の凍
結、破損を未然に防ぎ、給湯の運転効率が高いヒートポ
ンプ風呂給湯システムとすることができる。As described above, in this embodiment, the water level sensor 27, the operation control means 28, etc. are installed, and the operation control means 28 determines that the water level H of the bathtub 8 detected by the water level sensor 27 is the preset lower limit water level. With respect to L, the bath heat utilization hot water supply operation is performed when H> L, and the atmospheric heat utilization hot water supply operation is performed when H ≦ L. Therefore, when the bath water level of the bathtub 8 becomes low, The heat source of the heat pump cycle can be switched from the warm heat of the bath water to the atmospheric heat to perform the heating operation of the hot water. Therefore, it is possible to prevent the bath heat exchanger 5 from freezing and damage and to provide a heat pump bath hot water supply system with high hot water supply operation efficiency.
【００５６】運転制御手段２８に設定する下限水位Ｌ
は、浴槽８に接続されている浴槽水回路１３の高さに、
＋１〜５０ｃｍを加算する値に設定し、浴槽９の容積に
よって応じて最適値を決定する。浴槽９の容積が大きく
高さが低い場合は、容積が小さく高さが高い場合に比較
し、加算する値は小さい値となる。Lower limit water level L set in the operation control means 28
Is at the height of the bath water circuit 13 connected to the bath 8.
It is set to a value that adds +1 to 50 cm, and the optimum value is determined according to the volume of the bath 9. When the volume of the bathtub 9 is large and the height thereof is low, the value to be added is a small value as compared with the case where the volume is small and the height thereof is high.
【００５７】また、本実施例の風呂熱利用給湯運転と大
気熱利用給湯運転は、深夜時間帯に行ったときの例であ
るが、実施例５の優先運転設定手段２３から風呂熱利用
給湯運転の運転信号が発信されているときでも、水位セ
ンサー２８の検知した浴槽水水位Ｈが、予め設定した下
限水位Ｌに対して、Ｈ＞Ｌとなるとき風呂熱利用給湯運
転を行い、Ｈ≦Ｌとなるとき大気熱利用給湯運転を行う
こととすると、深夜時間帯以外で動作するヒートポンプ
風呂給湯システムを高効率な状態で運転することができ
る。Further, the hot-water supply hot-water supply operation using the bath heat and the hot-water supply hot-water supply operation using the atmospheric heat in this embodiment are examples when they are performed in the midnight time. Even when the operation signal of H is detected, the bath water level H detected by the water level sensor 28 is H> L with respect to a preset lower limit water level L, and the bath heat utilization hot water supply operation is performed, and H ≤ L When the hot water supply operation using the atmospheric heat is performed at such a time, the heat pump bath hot water supply system that operates at times other than midnight can be operated in a highly efficient state.
【００５８】[0058]
【発明の効果】以上のように、請求項１〜７に記載の発
明によれば、時刻検知手段の検知時刻が深夜時間帯であ
るとき、運転制御手段で風呂熱利用給湯運転を行うの
で、装置の運転効率が高い風呂熱利用給湯運転を、安価
な電気料金を使って実施することができる。従って、装
置の運転効率が高く、給湯のランニングコストを大幅に
低減したヒートポンプ風呂給湯システムとすることがで
きる。As described above, according to the invention described in claims 1 to 7, when the detection time of the time detection means is in the midnight time zone, the operation control means performs the hot water supply hot water supply operation, It is possible to carry out hot-water supply hot-water supply operation with high operation efficiency of the device using inexpensive electricity charges. Therefore, it is possible to provide a heat pump bath hot water supply system in which the operation efficiency of the device is high and the running cost of hot water supply is significantly reduced.
【図１】本発明の実施例１におけるヒートポンプ風呂給
湯システムの構成図FIG. 1 is a configuration diagram of a heat pump bath hot water supply system according to a first embodiment of the present invention.
【図２】本発明の実施例２におけるヒートポンプ風呂給
湯システムの構成図FIG. 2 is a configuration diagram of a heat pump bath hot water supply system according to a second embodiment of the present invention.
【図３】本発明の実施例３におけるヒートポンプ風呂給
湯システムの構成図FIG. 3 is a configuration diagram of a heat pump bath hot water supply system according to a third embodiment of the present invention.
【図４】本発明の実施例４におけるヒートポンプ風呂給
湯システムの構成図FIG. 4 is a configuration diagram of a heat pump bath hot water supply system according to a fourth embodiment of the present invention.
【図５】本発明の実施例５におけるヒートポンプ風呂給
湯システムの構成図FIG. 5 is a configuration diagram of a heat pump bath hot water supply system according to a fifth embodiment of the present invention.
【図６】本発明の実施例６におけるヒートポンプ風呂給
湯システムの構成図FIG. 6 is a configuration diagram of a heat pump bath hot water supply system according to a sixth embodiment of the present invention.
【図７】本発明の実施例７におけるヒートポンプ風呂給
湯システムの構成図FIG. 7 is a configuration diagram of a heat pump bath hot water supply system according to a seventh embodiment of the present invention.
【図８】従来のヒートポンプ風呂給湯システムの構成図FIG. 8 is a configuration diagram of a conventional heat pump bath hot water supply system.
１ 圧縮機
２ 給湯熱交換器
５ 風呂熱交換器
６ 大気熱交換器
７ 貯水槽
８ 浴槽
９ ヒートポンプ回路
１１ 水回路
１３ 浴槽水回路
１５ 時刻検知手段
１６、１７、１９、２０、２２、２６、２８ 運転制御
手段
１８ 給湯運転設定手段
２１ 運転予約手段
２３ 優先運転設定手段
２４、２５ 温度センサー
２７ 水位センサー1 Compressor 2 Hot Water Heat Exchanger 5 Bath Heat Exchanger 6 Atmosphere Heat Exchanger 7 Water Tank 8 Bath 9 Heat Pump Circuit 11 Water Circuit 13 Bath Water Circuit 15 Time Detecting Means 16, 17, 19, 20, 22, 26, 28 Operation control means 18 Hot water supply operation setting means 21 Operation reservation means 23 Priority operation setting means 24, 25 Temperature sensor 27 Water level sensor
───────────────────────────────────────────────────── フロントページの続き (72)発明者 尾浜 昌宏 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 安木 誠一 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Masahiro Obama 1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric Sangyo Co., Ltd. (72) Inventor Seiichi Yasuki 1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric Sangyo Co., Ltd.
Claims (7)
るヒートポンプ回路と、ヒートポンプ回路の冷媒と水回
路の給湯水が熱交換する給湯熱交換器と、浴槽を有する
浴槽水回路と、ヒートポンプ回路の冷媒と浴槽水回路の
浴槽水が熱交換する風呂熱交換器と、時刻を検知する時
刻検知手段と、時刻検知手段の検知時刻が深夜時間帯で
あるとき、風呂熱交換器で浴槽水から吸熱した熱を給湯
熱交換器で給湯水の加熱に利用する風呂熱利用給湯運転
を行う運転制御手段を備えたことを特徴とするヒートポ
ンプ風呂給湯システム。1. A water circuit having a water storage tank, a heat pump circuit having a compressor, a hot water supply heat exchanger for exchanging heat between refrigerant in the heat pump circuit and hot water in the water circuit, a bath water circuit having a bath, and a heat pump. The bath heat exchanger in which the refrigerant in the circuit and the bath water in the circuit exchange heat, the time detection means for detecting the time, and the bath water in the bath heat exchanger when the time detected by the time detection means is in the midnight time zone. A heat pump bath hot water supply system characterized by comprising operation control means for performing hot water hot water supply operation in which the heat absorbed from the water is used to heat the hot water by a hot water heat exchanger.
転信号を発信させることができる給湯運転設定手段を有
し、運転制御手段は、時刻検知手段の検知時刻が深夜時
間帯であって、給湯運転設定手段から風呂熱利用給湯運
転の運転信号が発信されている場合は、風呂熱利用給湯
運転を行う構成としたことを特徴とする請求項１記載の
ヒートポンプ風呂給湯システム。2. A hot water supply operation setting means by which a user can manually send an operation signal for hot water supply hot water supply operation, wherein the operation control means detects that the time detected by the time detection means is a midnight time zone. The heat pump bath hot water supply system according to claim 1, wherein when the hot water use hot water supply operation signal is transmitted from the hot water supply operation setting means, the hot water use hot water supply operation is performed.
する大気熱交換器とを有し、運転制御手段は、時刻検知
手段の検知時刻が深夜時間帯であって、給湯運転設定手
段から風呂熱利用給湯運転の運転信号が発信されていな
い場合は、大気熱交換器で大気から吸熱した熱を給湯熱
交換器で給湯水の加熱に利用する大気熱利用給湯運転を
行う構成としたことを特徴とする請求項２記載のヒート
ポンプ風呂給湯システム。3. An atmosphere heat exchanger for exchanging heat between the atmosphere and the refrigerant of the heat pump circuit, wherein the operation control means detects the time when the time detection means is in the midnight time zone, and the hot water supply operation setting means sets the bath heat When the operation signal for the hot water supply operation is not transmitted, it is characterized in that the heat absorbed by the atmosphere in the atmospheric heat exchanger is used to heat the hot water in the hot water supply heat exchanger. The heat pump bath hot water supply system according to claim 2.
する大気熱交換器と、給湯運転設定手段から風呂熱利用
給湯運転の運転信号が発信される時刻を、使用者が手動
で予約する運転予約手段とを有し、運転制御手段は、時
刻検知手段の検知時刻が深夜時間帯であって、運転予約
手段に予約された時刻に達していない場合は大気熱利用
給湯運転を行い、その後、運転予約手段に予約された時
刻に達した場合は風呂熱利用給湯運転を行う構成とした
ことを特徴とする請求項２または３に記載のヒートポン
プ風呂給湯システム。4. An operation reservation in which the user manually reserves an atmospheric heat exchanger for exchanging heat between the atmosphere and the refrigerant in the heat pump circuit, and a time when the operation signal for the bath heat utilization hot water supply operation is transmitted from the hot water supply operation setting means. The operation control means performs the hot water supply operation using atmospheric heat when the detection time of the time detection means is in the midnight time zone and the time reserved by the operation reservation means has not been reached, and then the operation is performed. The heat pump bath hot water supply system according to claim 2 or 3, wherein when the time reserved by the reservation means is reached, the bath heat utilization hot water supply operation is performed.
転信号を発信させることができる優先運転設定手段とを
有し、運転制御手段は、優先運転設定手段から風呂熱利
用給湯運転の運転信号が発信された場合は、時刻検知手
段の検知時刻に関わらず風呂熱利用給湯運転を行う構成
としたことを特徴とする請求項１〜４のいずれか１項に
記載のヒートポンプ風呂給湯システム。5. A priority operation setting means by which a user can manually send an operation signal for hot water supply operation using bath heat, wherein the operation control means operates the hot water supply operation using bath heat from the priority operation setting means. The heat pump bath hot water supply system according to any one of claims 1 to 4, wherein when the signal is transmitted, the bath heat utilizing hot water supply operation is performed regardless of the detection time of the time detection means.
する大気熱交換器と、大気の温度を検知する温度センサ
ーと、浴槽水の温度を検知する温度センサーとを有し運
転制御手段は、これら温度センサーの検知した温度を基
に、風呂熱利用給湯運転と大気熱利用給湯運転のどちら
か一方を選択して運転する構成としたことを特徴とする
請求項１〜５のいずれか１項に記載のヒートポンプ風呂
給湯システム。6. The operation control means having an atmosphere heat exchanger for exchanging heat between the atmosphere and the refrigerant of the heat pump circuit, a temperature sensor for detecting the temperature of the atmosphere, and a temperature sensor for detecting the temperature of the bath water. The hot water supply operation using bath heat or the hot water supply operation using atmospheric heat is selected and operated based on the temperature detected by the temperature sensor. The heat pump bath hot water supply system described.
する大気熱交換器と、浴槽の水位を検知する水位センサ
ーとを有し、運転制御手段は、水位センサーの検知した
水位を基に、風呂熱利用給湯運転と大気熱利用給湯運転
のどちらか一方を選択して運転する構成としたことを特
徴とする請求項１〜６のいずれか１項に記載のヒートポ
ンプ風呂給湯システム。7. An atmospheric heat exchanger for exchanging heat between the atmosphere and a refrigerant of a heat pump circuit, and a water level sensor for detecting a water level in a bathtub, wherein the operation control means has a bath based on the water level detected by the water level sensor. The heat pump bath hot water supply system according to any one of claims 1 to 6, wherein one of the heat utilization hot water supply operation and the atmospheric heat utilization hot water supply operation is selected and operated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001221093A JP3876658B2 (en) | 2001-07-23 | 2001-07-23 | Heat pump bath hot water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001221093A JP3876658B2 (en) | 2001-07-23 | 2001-07-23 | Heat pump bath hot water system |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006241015A Division JP2007024494A (en) | 2006-09-06 | 2006-09-06 | Bath hot-water supply system by heat pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003035453A true JP2003035453A (en) | 2003-02-07 |
| JP3876658B2 JP3876658B2 (en) | 2007-02-07 |
Family
ID=19054813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001221093A Expired - Fee Related JP3876658B2 (en) | 2001-07-23 | 2001-07-23 | Heat pump bath hot water system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3876658B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008064330A (en) * | 2006-09-05 | 2008-03-21 | Toshiba Kyaria Kk | Heat pump hot water supply system |
| JP2009174753A (en) * | 2008-01-23 | 2009-08-06 | Mitsubishi Electric Corp | Heat exchanger and heat pump water heater |
| JP2009236424A (en) * | 2008-03-27 | 2009-10-15 | Toshiba Carrier Corp | Heat pump hot water supply system |
| JP2010276220A (en) * | 2009-05-26 | 2010-12-09 | Chofu Seisakusho Co Ltd | Hot water supply system |
| JP2019045055A (en) * | 2017-08-31 | 2019-03-22 | リンナイ株式会社 | Hot water supply system |
-
2001
- 2001-07-23 JP JP2001221093A patent/JP3876658B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008064330A (en) * | 2006-09-05 | 2008-03-21 | Toshiba Kyaria Kk | Heat pump hot water supply system |
| JP2009174753A (en) * | 2008-01-23 | 2009-08-06 | Mitsubishi Electric Corp | Heat exchanger and heat pump water heater |
| JP2009236424A (en) * | 2008-03-27 | 2009-10-15 | Toshiba Carrier Corp | Heat pump hot water supply system |
| JP2010276220A (en) * | 2009-05-26 | 2010-12-09 | Chofu Seisakusho Co Ltd | Hot water supply system |
| JP2019045055A (en) * | 2017-08-31 | 2019-03-22 | リンナイ株式会社 | Hot water supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3876658B2 (en) | 2007-02-07 |
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