JP2004218911A - Heat pump type hot-water supply heating device - Google Patents

Heat pump type hot-water supply heating device Download PDF

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Publication number
JP2004218911A
JP2004218911A JP2003005951A JP2003005951A JP2004218911A JP 2004218911 A JP2004218911 A JP 2004218911A JP 2003005951 A JP2003005951 A JP 2003005951A JP 2003005951 A JP2003005951 A JP 2003005951A JP 2004218911 A JP2004218911 A JP 2004218911A
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Japan
Prior art keywords
hot water
water
heat exchanger
refrigerant
hot
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Pending
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JP2003005951A
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Japanese (ja)
Inventor
Koji Namikata
浩二 南方
Tadao Okada
忠夫 岡田
Kiyoshi Koyama
清 小山
Satoshi Hoshino
聡 星野
Yoshinori Enya
義徳 遠谷
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Sanyo Electric Co Ltd
Sanyo Electric Air Conditioning Co Ltd
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Sanyo Electric Co Ltd
Sanyo Electric Air Conditioning Co Ltd
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Priority to JP2003005951A priority Critical patent/JP2004218911A/en
Publication of JP2004218911A publication Critical patent/JP2004218911A/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/12—Hot water central heating systems using heat pumps

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat pump type hot water supply heating device of high usability, capable of coping with both of a case when the hot water of high temperature heating operation and the hot-water heating operation are simultaneously performed, and a case when only one of them is performed. <P>SOLUTION: This heat pump type hot-water supply heating device comprises a refrigerant circuit R having a compressor 14, a first water refrigerant heat exchanger 4, a second water refrigerant heat exchanger 11, decompressors 17, 18 and an air heat exchanger 20, a first hot water circulation passage C1 for circulating the hot water of high temperature between the first water refrigerant heat exchanger 4 and a hot water heater such as a fan coil 1 and the like, a second hot water circulation passage C2 for circulating the stored hot water between the second water refrigerant heat exchanger 11 and a hot water storage tank 9, a third hot water circulation passage C3 for circulating the stored hot water between the hot water storage tank 9 and the water-water heat exchanger 22, and a forth hot water circulation passage C4 for circulating the hot water of intermediate temperature between the water-water heat exchanger 22 and the hot water heater such as the floor heating panel 25 and the like. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、ＨＦＣやＣＯ２等の冷媒を用いたヒートポンプ式給湯暖房装置に関する。
【０００２】
【従来の技術】
従来のこの種のヒートポンプ式給湯暖房装置は、ヒートポンプユニットで熱交換して得られた高温水を貯湯タンクに貯湯・蓄熱し、このタンクの高温水を給湯や風呂に使用するとともに、この高温水と熱交換して得られた暖房用温水を用いて温水暖房を行うものが知られている。このものでは、貯湯タンクの８０〜９０℃の貯湯水と熱交換して得られる暖房用温水の温度は６０〜７０℃程度であるため、８０℃以上の高温の暖房用温水を必要とするファンコイル等による温風暖房には不向きであった。
【０００３】
もちろん、貯湯タンクの貯湯水をそのままファンコイル等の温水暖房器に循環供給すれば、上述した問題は解消されるが、貯湯タンクには上水道が接続されているため、暖房用温水が上水道に接することになり、この方式は上水保全の点から採用することができないものであった。
【０００４】
また、ヒートポンプユニットの冷媒回路に給湯用の水冷媒熱交換器と暖房用の水冷媒熱交換器を組み込み、給湯用の温水と暖房用の温水とが得られるようにしたものが知られている（例えば、特許文献１参照）。
【０００５】
ところが、このものでは、高温水の温水暖房運転と中温水の温水暖房運転の同時運転に対応できるものではなかった。
【０００６】
【特許文献１】
特開２００２−２５７３６６号公報
【０００７】
【発明が解決しようとする課題】
そこで本発明は、ヒートポンプユニットの冷媒回路に給湯用の水冷媒熱交換器と暖房用の水冷媒熱交換器を組み込み、給湯用の温水と暖房用の温水とが得られるようにしたものにおいて、高温水の温水暖房運転と中温水の温水暖房運転の同時運転、又はいずれか一方の単独運転に対応可能とし、使い勝手の良いヒートポンプ式給湯暖房装置を提供することを目的とする。
【０００８】
【課題を解決するための手段】
このため第１の発明は、圧縮機、第１水冷媒熱交換器、第２水冷媒熱交換器、減圧装置及び空気熱交換器を有する冷媒回路と、前記第１水冷媒熱交換器とファンコイル等の温水暖房器との間で高温水を循環させる第１温水循環路と、前記第２水冷媒熱交換器と貯湯タンクとの間で貯湯水を循環させる第２温水循環路と、前記貯湯タンクと水々熱交換器との間で貯湯水を循環させる第３温水循環路と、前記水々熱交換器と床暖房パネル等の温水暖房器との間で中温水を循環させる第４温水循環路とを備えたことを特徴とする。
【０００９】
第２の発明は、第１の発明のヒートポンプ式給湯暖房装置において、前記第１水冷媒熱交換器と前記第２水冷媒熱交換器とはそれぞれ減圧装置を介して並列に前記冷媒回路に組み込まれていることを特徴とする。
【００１０】
第３の発明は、第１又は第２の発明のヒートポンプ式給湯暖房装置において、前記圧縮機は能力調整が可能なものであることを特徴とする。
【００１１】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づき説明する。図１はヒートポンプ式給湯暖房装置の全体システムを示す系統図である。図１において、Ａはヒートポンプユニット、Ｂはタンクユニット、Ｃ１は高温水を必要とする温水暖房用の第１温水循環路、Ｃ２は給湯用の第２温水循環路、Ｃ３及びＣ４は中温水を必要とする温水暖房用の第３及び第４温水循環路、ＲはヒートポンプユニットＡに内蔵された冷媒回路である。ＨＦＣやＣＯ２等の冷媒を用いることができるが、本実施形態ではＣＯ２を用いる。
【００１２】
前記温水循環路Ｃ１には、浴室の温風暖房用のファンコイル（温水暖房器）１、膨張タンク２、循環ポンプ３、第１水冷媒熱交換器４の水流路４Ｂ、サーミスタ５、流量調整弁６が順次環状に設けられている。７は浴室暖房リモートコントローラ（以下、「浴室暖房リモコン」という）、８はファンコイル１の入口部に設けられた熱動弁である。
【００１３】
前記温水循環路Ｃ２には、貯湯タンク９、循環ポンプ１０、第２水冷媒熱交換器１１の水流路１１Ｂ、サーミスタ１２、流量調整弁１３が順次環状に設けられている。
【００１４】
前記冷媒回路Ｒは、ＣＯ２冷媒を用いた能力調整が可能な２段圧縮式の圧縮機１４と、第１水冷媒熱交換器４の冷媒流路４Ａ、内部熱交換器１５の一次流路１５Ａ、第１開閉弁１６及び第１膨張弁（減圧装置）１７よりなる第１分岐路Ｐ１と第２水冷媒熱交換器１１の冷媒流路１１Ａ、第２開閉弁１８及び第２膨張弁（減圧装置）１９よりなる第２分岐路Ｐ２との並列回路と、空気熱交換器２０と、内部熱交換器１５の二次流路１５Ｂと、アキュムレーター２１とが順次環状に配管接続されている。
【００１５】
前記温水循環路Ｃ３は、貯湯タンク９と水々熱交換器２２の一次流路２２Ａとが開閉弁２３及び循環ポンプ２４を介して環状に配管接続されている。前記温水循環路Ｃ４は、床暖房パネル２５と水々熱交換器２２の二次流路２２Ｂとが温水循環路Ｃ１の膨張タンク２及び循環ポンプ３とサーミスタ２６及び熱動弁２７を介して環状に配管接続されている。２８は床暖房リモートコントローラ（以下、「床暖房リモコン」という）である。
【００１６】
また、貯湯タンク９には水々熱交換器２９の一次流路２９Ａが開閉弁３０と循環ポンプ２４を介して接続されている。また、水々熱交換器２９の二次流路２９Ｂには循環ポンプ３１を介して浴槽３２が接続されている。３３は貯湯タンク９の上部に接続された給湯管であり、この給湯管３３にはミキシングバルブ３４が設けられている。３５は給水管であり、この給水管３５は貯湯タンク９の下部とミキシングバルブ３４とに分岐接続され、更に開閉弁３６を介して膨張タンク２に接続されている。
【００１７】
ヒートポンプユニットＡとタンクユニットＢにはそれぞれマイクロコンピュータから成る制御装置Ｓ１、Ｓ２が設けられている。この制御装置Ｓ１、Ｓ２は浴室暖房リモコン７や床暖房リモコン２８からの運転信号や温度信号と、サーミスタ５、１２、２６の温度信号とにより、圧縮機１４の運転と周波数制御、循環ポンプ３、１０、２４の運転制御、熱動弁２７と開閉弁１６、１８、２３、３０の開閉制御、膨張弁１７、１９の開度制御、流量調整弁６、１３の開度制御などを行うものである。以下その動作を説明する。
【００１８】
〈浴室暖房運転〉
ファンコイル１による浴室の温風暖房を行う場合、浴室暖房リモコン７の運転スイッチをオンにする。すると、ファンコイル入口部の熱動弁８が開き、循環ポンプ３が運転する。第１温水循環路Ｃ１では、膨張タンク２→循環ポンプ３→第１水冷媒熱交換器４の水流路４Ｂ→流量調整弁６→熱動弁８→ファンコイル１→膨張タンク２の順に温水が流れる。
【００１９】
また、浴室暖房リモコン７の運転スイッチをオンにした際に、ヒートポンプユニットＡの圧縮機１４が運転し、冷媒回路Ｒでは、圧縮機１４→第１水冷媒熱交換器４の冷媒流路４Ａ→内部熱交換器１５の一次流路１５Ａ→第１開閉弁１６→第１膨張弁１７→空気熱交換器２０→内部熱交換器１５の二次流路１５Ｂ→アキュムレーター２１→圧縮機１４の順に冷媒が流れる。
【００２０】
このとき、貯湯は行われないので、第２開閉弁１８及び第２膨張弁１９は閉じている。また、第１水冷媒熱交換器４の冷媒流路４Ａを通過した冷媒は、内部熱交換器１５の一次流路１５Ａ及び二次流路１５Ｂの熱交換により熱回収が行われるため、冷媒回路Ｒでは効率の良い運転が行われ、ファンコイル１には温風暖房に適した８０℃程度の高温水が循環供給される。
【００２１】
〈貯湯運転〉
貯湯タンク９に貯湯を行う場合、循環ポンプ１０が運転し、第２温水循環路Ｃ２では、貯湯タンク９→循環ポンプ１０→第２水冷媒熱交換器１１の水流路１１Ｂ→流量調整弁１３→貯湯タンク９の順に貯湯水が流れ、貯湯タンク９に貯湯される。
【００２２】
ヒートポンプユニットＡでは圧縮機１４が運転し、冷媒回路Ｒでは、圧縮機１４→第２水冷媒熱交換器１１の冷媒流路１１Ａ→第２開閉弁１８→第２膨張弁１９→空気熱交換器２０→内部熱交換器１５の二次流路１５Ｂ→アキュムレーター２１→圧縮機１４の順に冷媒が流れる。このとき、温風暖房は行われないので、第１開閉弁１６及び第１膨張弁１７は閉じている。また、内部熱交換器１５の二次流路１５Ｂでは冷媒がただ通過するだけで、他に影響を及ぼすことはない。
【００２３】
貯湯タンク９に貯湯される温水温度は９０℃であるが、サーミスタ１２が検知する温度がこの温度になるように、圧縮機１４の周波数制御、第２膨張弁１９の弁開度制御、流量調整弁１３の弁開度制御が行われる。
【００２４】
貯湯タンク９に貯湯された高温水はミキシングバルブ３４にて適度な温度に調整され、給湯管３３から台所やシャワーや浴槽３２へのお湯張り等に利用され、給湯が行われると、給水管３５から貯湯タンク９に給水が行われる。また、循環ポンプ２４、３１を運転するとともに、開閉弁３０を開くことにより、貯湯タンク９の高温水と浴槽３２の温水を水々熱交換器２９で熱交換し、浴槽３２の温水の追い焚きを行うこともできる。
【００２５】
〈床暖房運転〉
床暖房パネル２５による床暖房を行う場合、その部屋の壁面等に取り付けられた床暖房リモコン２８の運転スイッチをオンにする。すると、熱動弁２７が開き、循環ポンプ３が運転し、第４温水循環路Ｃ４では、膨張タンク２→循環ポンプ３→水々熱交換器２２の二次流路２２Ｂ→熱動弁２７→床暖房パネル２５→膨張タンク２の順に温水が流れる。また、第３温水循環路Ｃ３では、開閉弁２３が開き、循環ポンプ２４が運転し、貯湯タンク９に貯湯された高温水が水々熱交換器２２の一次流路２２Ａに循環供給される。
【００２６】
このため、貯湯タンク９の高温水を利用し、この高温水と第４温水循環路Ｃ４の温水とが熱交換されることにより、床暖房パネルに２５には適度な温水が循環供給される。
【００２７】
床暖房制御は、床暖房リモコン２８に搭載された室温サーミスタ（図示せず）により室温を検知し、設定温度と室温との偏差に基づき熱動弁２７を開閉制御し、床暖房パネル２５への温水量を制御することにより行われる。
【００２８】
床暖房パネル２５に供給される温水の温度は６０〜７０℃であるが、サーミスタ２６が検知する温水温度がこの温度になるように、上述した温水循環運転が行われる。そして、長時間、床暖房運転をすることにより貯湯タンク９の熱容量が低下した場合には、上述した貯湯運転が行われ、圧縮機１１の周波数制御、第２膨張弁１９の弁開度制御及び流量調整弁１３の弁開度制御が行われる。
【００２９】
〈床暖房及び浴室暖房の同時運転〉
ファンコイル１による浴室暖房と床暖房パネル２５による床暖房を同時に行う場合、リモコン７、２８の運転スイッチをオンにする。すると、上述した浴室暖房運転と床暖房運転が同時に行われ、ファンコイル１には８０℃程度の高温水が循環供給され、床暖房パネル２５には６０〜７０℃の中温水が循環供給される。
【００３０】
〈貯湯及び浴室暖房の同時運転〉
ファンコイル１による浴室の温風暖房と同時に貯湯タンク９に貯湯を行う場合、上述した浴室暖房運転と貯湯運転とが同時に行われるものであり、ファンコイル１には８０℃程度の高温水が循環供給され、一方、貯湯タンク９には９０℃程度の高温水が貯湯される。
【００３１】
この場合、基本的には、膨張弁１７、１９の制御により、第１分岐路Ｐ１と第２分岐路Ｐ２とに１：１の割合で冷媒を配分し、同時運転が行われた場合でも、温風暖房側と貯湯側とで十分な能力が得られるようにしてある。
【００３２】
以上本発明の実施態様について説明したが、上述の説明に基づいて当業者にとって種々の代替例、修正又は変形が可能であり、本発明の趣旨を逸脱しない範囲で前述の種々の代替例、修正又は変形を包含するものである。
【００３３】
【発明の効果】
以上のように本発明は、圧縮機、第１水冷媒熱交換器、第２水冷媒熱交換器、減圧装置及び空気熱交換器を有する冷媒回路と、前記第１水冷媒熱交換器とファンコイル等の温水暖房器との間で高温水を循環させる第１温水循環路と、前記第２水冷媒熱交換器と貯湯タンクとの間で貯湯水を循環させる第２温水循環路と、前記貯湯タンクと水々熱交換器との間で貯湯水を循環させる第３温水循環路と、前記水々熱交換器と床暖房パネル等の温水暖房器との間で中温水を循環させる第４温水循環路とを備えたものであるから、高温水の温水暖房運転と中温水の温水暖房運転の同時運転、又はいずれか一方の単独運転に対応することができ、使い勝手の良いヒートポンプ式給湯暖房装置を提供できるものである。
【００３４】
また、前記第１水冷媒熱交換器と前記第２水冷媒熱交換器とはそれぞれ減圧装置を介して並列に前記冷媒回路に組み込まれているので、冷媒回路の冷媒を２つの分岐路に分配し、温水暖房能力と貯湯能力とをそれぞれ十分に確保することができ、更に前記圧縮機に能力調整が可能なものを使用したので、効率の良いヒートポンプ運転を行うことができる。
【図面の簡単な説明】
【図１】ヒートポンプ式給湯暖房装置の全体系統図である。
【符号の説明】
Ｃ１ 第１温水循環路
Ｃ２ 第２温水循環路
Ｃ３ 第３温水循環路
Ｃ４ 第４温水循環路
Ｐ１ 第１分岐路
Ｐ２ 第２分岐路
Ｒ 冷媒回路
１ ファンコイル（温水暖房器）
４ 第１水冷媒熱交換器
１１ 第２水冷媒熱交換器
９ 貯湯タンク
１４ 圧縮機
１７ 第１膨張弁（減圧装置）
１９ 第２膨張弁（減圧装置）
２０ 空気熱交換器
２５ 床暖房パネル（温水暖房器）[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heat pump hot water supply / room heating device using a refrigerant such as HFC or CO 2 .
[0002]
[Prior art]
Conventional heat pump hot water supply and heating devices of this type store and store high-temperature water obtained by heat exchange in a heat pump unit in a hot water storage tank, use the high-temperature water in the tank for hot water supply and bathing, and use this high-temperature water Is known that performs hot water heating using heating hot water obtained by heat exchange with water. In this case, since the temperature of the heating hot water obtained by heat exchange with the hot water of 80 to 90 ° C. in the hot water storage tank is about 60 to 70 ° C., a fan that requires high-temperature heating hot water of 80 ° C. or more is required. It was not suitable for hot air heating by coils or the like.
[0003]
Of course, if the hot water in the hot water storage tank is circulated and supplied to the hot water heater such as a fan coil as it is, the above-mentioned problem is solved. Therefore, this method could not be adopted from the viewpoint of water conservation.
[0004]
Further, there is known a heat pump unit in which a water refrigerant heat exchanger for hot water supply and a water refrigerant heat exchanger for heating are incorporated in a refrigerant circuit to obtain hot water for hot water supply and hot water for heating. (For example, see Patent Document 1).
[0005]
However, this method cannot cope with the simultaneous operation of the hot water heating operation of the high-temperature water and the hot water heating operation of the medium-temperature water.
[0006]
[Patent Document 1]
JP 2002-257366 A
[Problems to be solved by the invention]
Therefore, the present invention incorporates a water-refrigerant heat exchanger for hot water supply and a water-refrigerant heat exchanger for heating in a refrigerant circuit of a heat pump unit so that hot water for hot water supply and hot water for heating can be obtained. It is an object of the present invention to provide a heat pump hot water supply / heating apparatus which is capable of coping with simultaneous operation of hot water heating operation of high-temperature water and hot water heating operation of medium-temperature water, or any one of them alone, and which is easy to use.
[0008]
[Means for Solving the Problems]
Therefore, the first invention provides a refrigerant circuit having a compressor, a first water-refrigerant heat exchanger, a second water-refrigerant heat exchanger, a decompression device, and an air heat exchanger, the first water-refrigerant heat exchanger, and a fan. A first hot water circulation path for circulating high-temperature water with a hot water heater such as a coil, a second hot water circulation path for circulating hot water between the second water-refrigerant heat exchanger and the hot water storage tank, A third hot water circulation path for circulating hot water between the hot water storage tank and the water / heat exchanger, and a fourth hot water circulation between the hot water heater and the hot water heater such as a floor heating panel. And a hot water circulation path.
[0009]
According to a second invention, in the heat pump hot water supply / room heating device according to the first invention, the first water-refrigerant heat exchanger and the second water-refrigerant heat exchanger are respectively incorporated in the refrigerant circuit in parallel via a pressure reducing device. It is characterized by being.
[0010]
According to a third aspect, in the heat pump hot water supply / room heating device according to the first or second aspect, the compressor is capable of adjusting its capacity.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a system diagram showing an entire system of a heat pump hot water supply / room heating device. In FIG. 1, A is a heat pump unit, B is a tank unit, C1 is a first hot water circulation circuit for hot water heating requiring high temperature water, C2 is a second hot water circulation circuit for hot water supply, and C3 and C4 are medium-temperature water. The required third and fourth hot water circulation paths for hot water heating, R, are refrigerant circuits incorporated in the heat pump unit A. Although a refrigerant such as HFC or CO 2 can be used, in this embodiment, CO 2 is used.
[0012]
In the hot water circulation path C1, a fan coil (hot water heater) 1 for heating hot air in a bathroom, an expansion tank 2, a circulation pump 3, a water flow path 4B of a first water / refrigerant heat exchanger 4, a thermistor 5, a flow rate adjustment The valves 6 are sequentially provided in an annular shape. Reference numeral 7 denotes a bathroom heating remote controller (hereinafter, referred to as “bathroom heating remote controller”), and reference numeral 8 denotes a thermal valve provided at an inlet of the fan coil 1.
[0013]
In the hot water circulation path C2, a hot water storage tank 9, a circulation pump 10, a water flow path 11B of a second water / refrigerant heat exchanger 11, a thermistor 12, and a flow control valve 13 are sequentially provided in an annular shape.
[0014]
The refrigerant circuit R includes a two-stage compression type compressor 14 capable of adjusting the capacity using a CO 2 refrigerant, a refrigerant flow path 4A of the first water-refrigerant heat exchanger 4, and a primary flow path of the internal heat exchanger 15. 15A, a first branch path P1 including a first on-off valve 16 and a first expansion valve (decompression device) 17, a refrigerant flow path 11A of the second water-refrigerant heat exchanger 11, a second on-off valve 18, and a second expansion valve ( A parallel circuit with a second branch P2 composed of a decompression device 19, an air heat exchanger 20, a secondary flow path 15B of the internal heat exchanger 15, and an accumulator 21 are sequentially piped in a ring shape. .
[0015]
In the hot water circulation path C3, the hot water storage tank 9 and the primary flow path 22A of the water heat exchanger 22 are connected in a ring-like manner via an on-off valve 23 and a circulation pump 24. In the hot water circulation path C4, the floor heating panel 25 and the secondary flow path 22B of the water heat exchanger 22 are annularly connected via the expansion tank 2 and the circulation pump 3 of the hot water circulation path C1, the thermistor 26, and the thermal valve 27. Is connected to the piping. Reference numeral 28 denotes a floor heating remote controller (hereinafter, referred to as “floor heating remote controller”).
[0016]
The hot water storage tank 9 is connected to a primary flow path 29A of the water / heat exchanger 29 via an on-off valve 30 and a circulation pump 24. Further, a bathtub 32 is connected to a secondary flow path 29B of the water / heat exchanger 29 via a circulation pump 31. Reference numeral 33 denotes a hot water supply pipe connected to the upper part of the hot water storage tank 9, and the hot water supply pipe 33 is provided with a mixing valve 34. Reference numeral 35 denotes a water supply pipe. The water supply pipe 35 is branched and connected to a lower portion of the hot water storage tank 9 and the mixing valve 34, and further connected to the expansion tank 2 via an on-off valve 36.
[0017]
The heat pump unit A and the tank unit B are provided with control devices S1 and S2 each comprising a microcomputer. The control devices S1 and S2 control the operation and frequency control of the compressor 14 and the circulating pump 3 by operating signals and temperature signals from the bathroom heating remote controller 7 and floor heating remote controller 28 and the thermistors 5, 12, and 26. It controls the operation of 10, 24, controls the opening and closing of the thermal valve 27 and the on-off valves 16, 18, 23, 30, controls the opening of the expansion valves 17, 19, and controls the opening of the flow regulating valves 6, 13. is there. The operation will be described below.
[0018]
<Bathroom heating operation>
When performing warm air heating of the bathroom by the fan coil 1, the operation switch of the bathroom heating remote control 7 is turned on. Then, the thermal valve 8 at the inlet of the fan coil opens, and the circulation pump 3 operates. In the first hot water circulation path C1, hot water flows in the order of the expansion tank 2 → the circulation pump 3 → the water flow path 4B of the first water / refrigerant heat exchanger 4 → the flow control valve 6 → the thermal valve 8 → the fan coil 1 → the expansion tank 2. Flows.
[0019]
Further, when the operation switch of the bathroom heating remote controller 7 is turned on, the compressor 14 of the heat pump unit A operates, and in the refrigerant circuit R, the compressor 14 → the refrigerant flow path 4A of the first water / refrigerant heat exchanger 4 → The primary flow path 15A of the internal heat exchanger 15 → the first opening / closing valve 16 → the first expansion valve 17 → the air heat exchanger 20 → the secondary flow path 15B of the internal heat exchanger 15 → the accumulator 21 → the compressor 14. Refrigerant flows.
[0020]
At this time, since the hot water is not stored, the second on-off valve 18 and the second expansion valve 19 are closed. Further, the refrigerant that has passed through the refrigerant flow path 4A of the first water-refrigerant heat exchanger 4 is subjected to heat recovery by heat exchange in the primary flow path 15A and the secondary flow path 15B of the internal heat exchanger 15, so that the refrigerant circuit In R, efficient operation is performed, and high-temperature water of about 80 ° C. suitable for hot air heating is circulated and supplied to the fan coil 1.
[0021]
<Hot water storage operation>
When hot water is stored in the hot water storage tank 9, the circulation pump 10 is operated, and in the second hot water circulation path C2, the hot water storage tank 9 → the circulation pump 10 → the water flow path 11B of the second water / refrigerant heat exchanger 11 → the flow control valve 13 → Hot water flows in the order of the hot water storage tank 9 and is stored in the hot water storage tank 9.
[0022]
In the heat pump unit A, the compressor 14 operates, and in the refrigerant circuit R, the compressor 14 → the refrigerant flow path 11A of the second water-refrigerant heat exchanger 11 → the second on-off valve 18 → the second expansion valve 19 → the air heat exchanger. The refrigerant flows in the order of 20 → secondary flow path 15B of internal heat exchanger 15 → accumulator 21 → compressor 14. At this time, since the hot air heating is not performed, the first on-off valve 16 and the first expansion valve 17 are closed. Further, in the secondary flow path 15B of the internal heat exchanger 15, the refrigerant merely passes, and does not affect the other.
[0023]
Although the temperature of the hot water stored in the hot water storage tank 9 is 90 ° C., the frequency control of the compressor 14, the valve opening degree control of the second expansion valve 19, and the flow rate adjustment are performed so that the temperature detected by the thermistor 12 becomes this temperature. The valve opening control of the valve 13 is performed.
[0024]
The high-temperature water stored in the hot-water storage tank 9 is adjusted to an appropriate temperature by a mixing valve 34, and is used for hot water filling from a hot water supply pipe 33 to a kitchen, a shower, or a bathtub 32. When hot water is supplied, a water supply pipe 35 is provided. Is supplied to the hot water storage tank 9. Further, by operating the circulation pumps 24 and 31 and opening the on-off valve 30, the hot water in the hot water storage tank 9 and the hot water in the bathtub 32 are exchanged in the water heat exchanger 29, and the hot water in the bathtub 32 is reheated. Can also be performed.
[0025]
<Floor heating operation>
When floor heating is performed by the floor heating panel 25, the operation switch of the floor heating remote controller 28 attached to the wall surface or the like of the room is turned on. Then, the heat valve 27 opens, the circulation pump 3 operates, and in the fourth hot water circulation path C4, the expansion tank 2 → the circulation pump 3 → the secondary flow path 22B of the water heat exchanger 22 → the heat valve 27 → Hot water flows in the order of the floor heating panel 25 → the expansion tank 2. In the third hot water circulation path C3, the on-off valve 23 is opened, the circulation pump 24 is operated, and the high-temperature water stored in the hot water storage tank 9 is circulated and supplied to the primary flow path 22A of the water heat exchanger 22.
[0026]
Therefore, by using the high-temperature water in the hot-water storage tank 9 and exchanging heat between the high-temperature water and the hot water in the fourth hot-water circulation path C4, moderate hot water is circulated and supplied to the floor heating panel 25.
[0027]
The floor heating control detects the room temperature with a room temperature thermistor (not shown) mounted on the floor heating remote controller 28, and controls the opening and closing of the thermal valve 27 based on the deviation between the set temperature and the room temperature. This is performed by controlling the amount of hot water.
[0028]
Although the temperature of the hot water supplied to the floor heating panel 25 is 60 to 70 ° C., the above-described hot water circulation operation is performed such that the hot water temperature detected by the thermistor 26 becomes this temperature. Then, when the heat capacity of the hot water storage tank 9 decreases due to the floor heating operation for a long time, the above-described hot water storage operation is performed, and the frequency control of the compressor 11, the valve opening degree control of the second expansion valve 19, and The valve opening control of the flow control valve 13 is performed.
[0029]
<Simultaneous operation of floor heating and bathroom heating>
When the bathroom heating by the fan coil 1 and the floor heating by the floor heating panel 25 are performed simultaneously, the operation switches of the remote controllers 7 and 28 are turned on. Then, the above-described bathroom heating operation and floor heating operation are simultaneously performed, and high-temperature water of about 80 ° C. is circulated and supplied to the fan coil 1, and medium-temperature water of 60 to 70 ° C. is circulated and supplied to the floor heating panel 25. .
[0030]
<Simultaneous operation of hot water storage and bathroom heating>
When hot water is stored in the hot water storage tank 9 simultaneously with the hot air heating of the bathroom by the fan coil 1, the above-described bathroom heating operation and hot water storage operation are performed simultaneously, and high-temperature water of about 80 ° C. circulates in the fan coil 1. On the other hand, hot water of about 90 ° C. is stored in the hot water storage tank 9.
[0031]
In this case, basically, the refrigerant is distributed to the first branch path P1 and the second branch path P2 at a ratio of 1: 1 under the control of the expansion valves 17 and 19, and even when the simultaneous operation is performed, Sufficient capacity is obtained between the hot air heating side and the hot water storage side.
[0032]
Although the embodiments of the present invention have been described above, various alternatives, modifications, or variations are possible for those skilled in the art based on the above description, and the various alternatives, modifications, and modifications described above may be made without departing from the spirit of the present invention. Or, it includes modifications.
[0033]
【The invention's effect】
As described above, the present invention relates to a refrigerant circuit having a compressor, a first water-refrigerant heat exchanger, a second water-refrigerant heat exchanger, a decompression device, and an air heat exchanger, the first water-refrigerant heat exchanger, and a fan. A first hot water circulation path for circulating high-temperature water with a hot water heater such as a coil, a second hot water circulation path for circulating hot water between the second water-refrigerant heat exchanger and the hot water storage tank, A third hot water circulation path for circulating hot water between the hot water storage tank and the water / heat exchanger, and a fourth hot water circulation between the hot water heater and the hot water heater such as a floor heating panel. Since it is equipped with a hot water circulation path, it can cope with simultaneous operation of hot water heating operation of high-temperature water and hot water heating operation of medium-temperature water, or any one of them alone, and is easy to use. An apparatus can be provided.
[0034]
Further, since the first water-refrigerant heat exchanger and the second water-refrigerant heat exchanger are respectively incorporated in the refrigerant circuit in parallel via a pressure reducing device, the refrigerant of the refrigerant circuit is distributed to the two branch paths. In addition, it is possible to sufficiently secure the hot water heating capacity and the hot water storage capacity, respectively, and to use a compressor whose capacity can be adjusted, so that an efficient heat pump operation can be performed.
[Brief description of the drawings]
FIG. 1 is an overall system diagram of a heat pump hot water supply / room heating apparatus.
[Explanation of symbols]
C1 First hot water circulation path C2 Second hot water circulation path C3 Third hot water circulation path C4 Fourth hot water circulation path P1 First branch path P2 Second branch path R Refrigerant circuit 1 Fan coil (hot water heater)
4 First water refrigerant heat exchanger 11 Second water refrigerant heat exchanger 9 Hot water storage tank 14 Compressor 17 First expansion valve (pressure reducing device)
19 Second expansion valve (pressure reducing device)
20 air heat exchanger 25 floor heating panel (hot water heater)

Claims (3)

圧縮機、第１水冷媒熱交換器、第２水冷媒熱交換器、減圧装置及び空気熱交換器を有する冷媒回路と、前記第１水冷媒熱交換器とファンコイル等の温水暖房器との間で高温水を循環させる第１温水循環路と、前記第２水冷媒熱交換器と貯湯タンクとの間で貯湯水を循環させる第２温水循環路と、前記貯湯タンクと水々熱交換器との間で貯湯水を循環させる第３温水循環路と、前記水々熱交換器と床暖房パネル等の温水暖房器との間で中温水を循環させる第４温水循環路とを備えたことを特徴とするヒートポンプ式給湯暖房装置。A compressor, a first water-refrigerant heat exchanger, a second water-refrigerant heat exchanger, a refrigerant circuit having a decompression device and an air heat exchanger, and the first water-refrigerant heat exchanger and a hot water heater such as a fan coil. A first hot water circulation path for circulating high-temperature water therebetween, a second hot water circulation path for circulating hot water between the second water-refrigerant heat exchanger and the hot water storage tank, and a hot water storage tank and a water heat exchanger. And a fourth hot water circulation circuit for circulating medium-temperature water between the water heat exchanger and a hot water heater such as a floor heating panel. A heat pump hot water supply / room heating system characterized by the following. 前記第１水冷媒熱交換器と前記第２水冷媒熱交換器とはそれぞれ減圧装置を介して並列に前記冷媒回路に組み込まれていることを特徴とする請求項１に記載のヒートポンプ式給湯暖房装置。2. The heat pump hot water supply and heating system according to claim 1, wherein the first water-refrigerant heat exchanger and the second water-refrigerant heat exchanger are respectively incorporated in the refrigerant circuit in parallel via a pressure reducing device. 3. apparatus. 前記圧縮機は能力調整が可能なものであることを特徴とする請求項１又は２に記載のヒートポンプ式給湯暖房装置。The heat pump hot water supply / room heating device according to claim 1 or 2, wherein the compressor is capable of adjusting its capacity.
JP2003005951A 2003-01-14 2003-01-14 Heat pump type hot-water supply heating device Pending JP2004218911A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007010242A (en) * 2005-06-30 2007-01-18 Toshiba Kyaria Kk Heat pump type hot water supply device
JP2010002058A (en) * 2008-06-18 2010-01-07 Hitachi Appliances Inc Water heater
CN102538186A (en) * 2012-01-30 2012-07-04 黄溯 Multi-functional electric hot water boiler
WO2010147492A3 (en) * 2009-06-19 2013-03-14 Krzysztof Tabedzki Method of heating residential buildings and a heating system for residential buildings
JP2016138697A (en) * 2015-01-27 2016-08-04 三菱電機株式会社 Hot water supply system with bathroom heating function
CN111981553A (en) * 2020-08-14 2020-11-24 浙江理工大学 Double-effect heat pump system for combined supply of radiant floor and fan coil and using method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007010242A (en) * 2005-06-30 2007-01-18 Toshiba Kyaria Kk Heat pump type hot water supply device
JP4549241B2 (en) * 2005-06-30 2010-09-22 東芝キヤリア株式会社 Heat pump type water heater
JP2010002058A (en) * 2008-06-18 2010-01-07 Hitachi Appliances Inc Water heater
WO2010147492A3 (en) * 2009-06-19 2013-03-14 Krzysztof Tabedzki Method of heating residential buildings and a heating system for residential buildings
CN102538186A (en) * 2012-01-30 2012-07-04 黄溯 Multi-functional electric hot water boiler
JP2016138697A (en) * 2015-01-27 2016-08-04 三菱電機株式会社 Hot water supply system with bathroom heating function
CN111981553A (en) * 2020-08-14 2020-11-24 浙江理工大学 Double-effect heat pump system for combined supply of radiant floor and fan coil and using method

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