JP2004183907A - Heat pump type hot-water supply and heating apparatus - Google Patents

Heat pump type hot-water supply and heating apparatus Download PDF

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Publication number
JP2004183907A
JP2004183907A JP2002347583A JP2002347583A JP2004183907A JP 2004183907 A JP2004183907 A JP 2004183907A JP 2002347583 A JP2002347583 A JP 2002347583A JP 2002347583 A JP2002347583 A JP 2002347583A JP 2004183907 A JP2004183907 A JP 2004183907A
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heating
hot water
heat
circulation path
pump
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JP3857221B2 (en
Inventor
Kazuyoshi Irisawa
一義 入澤
Kaoru Katayama
馨 片山
Masahiko Yaguchi
正彦 矢口
Eiichi Machida
栄一 町田
Akihiro Sato
彰弘 佐藤
Masatoshi Uchida
正敏 内田
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Toshiba Electric Appliances Co Ltd
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Toshiba Electric Appliances Co Ltd
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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 and heating apparatus capable of effectively utilizing energy by using hot water at the inner bottom part of a hot water storage tank even in the normal mode for heating. <P>SOLUTION: A return water temperature sensor 40 is installed on the return side of a heating refrigerant circulation passage 28. When a temperature detected by the return water temperature sensor 40 is equal to or more than a specified temperature in the heating circulation passage 28 under operation, a heat exchanging circulation pump 11 is operated to circulate hot water at the bottom of the heat storage tank 5 and a heating operation is performed by the heat of the hot water. When the temperature detected by the return water temperature sensor 40 is less than the specified temperature, hot water in the normal circulation passage 7 for heating is boiled by a heat pump unit 3. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
本発明は、給湯に影響の少ない貯湯槽内下部の温水を循環させて、この循環される温水の熱を利用して暖房パネルから放熱させるようにしたヒートポンプ給湯暖房装置に関する。
【０００２】
【従来技術】
従来、ヒートポンプ給湯暖房装置は、例えば特開２００２−８９８６７号公報に記載されているように、ヒートポンプ１０、温水回路２０、暖房回路３０、及び制御装置４０を備えている。床暖房パネル３２の暖房運転の指示を受けた制御手段４０は、先ず暖房初期モードを実行する。このモードでは、温水回路２０と暖房回路３０が運転される。これによって、暖房回路３０の熱媒が、ヒートポンプ１０の熱交換器１１で温水回路２０の温水から熱を受け取り、床暖房パネル３２で放熱する。これによって床暖房パネル３２を素早く温めることができる。制御手段４０はその後暖房通常モードに切り換える。このモードでは、ヒートポンプ１０の冷媒回路１２と暖房回路３０が運転され、熱媒が、熱交換器１１で冷媒から熱を受け取り、床暖房パネル３２で放熱するようになっている。
【０００３】
しかし、このような、ヒートポンプ給湯暖房装置にれば、暖房通常モードではヒートポンプ１０の冷媒回路１２と暖房回路３０が運転され、冷媒回路１２の運転により暖房回路３０に熱が与えられるため貯湯槽２５内の温水は暖房初期モードのみ暖房運転に利用されるものである。
【０００４】
ところで、この種ヒートポンプ給湯暖房装置の貯湯モードは、通常夜間の電気料金の安い時間帯に実行される。そして、この電気料金の安い時間帯で貯湯された温水は台所や浴槽などに給湯して利用される。しかし、特に大容量の貯湯槽を有するものにあっては貯湯された温水を使い切れない場合が多々ある。そこで、この使い切れない温水を例えば暖房パネル等の温水利用機器に使用してエネルギーの有効活用することが望まれる。
【０００５】
【発明が解決しようとする課題】
しかし、特開２００２−８９８６７号公報に記載されたヒートポンプ給湯暖房装置は、夜間の安い時間帯で貯湯された貯湯槽内の温水は暖房初期モードのみ暖房運転に利用され、その後の暖房通常モードでは昼間の通常の電気料金でヒートポンプを運転して暖房運転を行うものでエネルギーの有効活用という点では必ずし満足するものではなかった。
【０００６】
本発明は、このような点に鑑みなされたもので、暖房通常モードにおいても貯湯槽内下部の温水を利用してエネルギーの有効活用が図れるヒートポンプ給湯暖房装置を提供することを目的とする。
【０００７】
【課題を解決するための手段】
請求項１記載のヒートポンプ給湯暖房装置は、圧縮機、冷媒熱交換器、集熱器としての蒸発器等を順次直列接続され冷媒が循環されるヒートポンプユニットと、貯湯槽の下部から上部に貯湯槽内の湯水を水熱交循環ポンプにより循環され前記冷媒熱交換器と熱交換される水熱交換器にて熱交換された温水を貯湯槽の上部から積層させる沸上用循環路と、貯湯槽下部から貯湯槽下部へ前記水熱交循環ポンプにより温水を循環させ暖房用熱交換器を有する暖房通常循環路と、この暖房通常循環路内の温水を暖房用循環ポンプにより循環され前記暖房熱交換器により熱交換させて暖房パネルから放熱させる暖房用熱媒循環路を備えたヒートポンプ給湯暖房装置において、前記暖房用熱媒循環路の戻り側に戻り水温度センサを設け、前記暖房用熱媒循環路運転時、戻り水温度センサが検知する温度が所定温度以上の時は前記水熱交循環ポンプを動作させて貯湯槽下部の温水を循環させこの温水の熱により暖房運転を行い、戻り水温度センサが検知する温度が所定温度以下を検知する時は前記ヒートポンプユニットにより暖房通常循環路内の温水を沸き上げて暖房運転を行うようにしたものである。
【０００８】
そして、この構成により、暖房通常運転においても、貯湯槽内下部の温水を利用した暖房運転が実行されエネルギーの有効活用が図れる。
【０００９】
【発明の実施の形態】
以下、本発明の一実施の形態を図面を参照して説明する。
【００１０】
【実施例】
図１に示すように、ヒートポンプ給湯暖房装置１は、貯湯ユニット２と、ヒートポンプユニット３と、暖房ユニット４とを備えている。
【００１１】
貯湯ユニット２は、貯湯槽５を備え、この貯湯槽５は、先止押上式の給湯方式を採用しており、貯湯槽５の下部には減圧弁６を介して水道水を給水する給水管７が接続されているとともに、上部には沸き上げた湯を台所や風呂場などの給湯先に給湯する給湯管８が接続されている。
【００１２】
貯湯槽５には、貯湯槽５の下部から出て貯湯槽５の上部に戻る沸上用循環路９が接続されている。この沸上用循環路９には貯湯槽５の下側から三方弁１０と、この沸上用循環路９の中間部は貯湯ユニット２から出てヒートポンプユニット３内に配置され、このヒートポンプユニット３内において貯湯槽５の下部の湯水を沸上用循環路９内に強制的に引き込んで貯湯槽５の上部に循環させる水熱交循環ポンプ１１と水熱交換器１２とが配設され、また、水熱交換器１２と貯湯槽５上部との間には流量調節器としての切換弁１３が配設されている。
【００１３】
また、貯湯槽５には、貯湯槽５の上部から湯水を取り出し貯湯槽５の下部に湯水を循環させる暖房初期循環路１４が接続されている。この暖房初期循環路１４には貯湯槽５の上部から第１の分岐路１５、三方弁１０、水熱交循環ポンプ１１、水熱交換器１２、切換弁１３、暖房用熱交換器１８、第２の分岐路１６、貯湯槽５下部と順次接続されている。
【００１４】
また、貯湯槽５下部には、貯湯槽５下部から出て貯湯槽５下部に湯水を循環させる暖房通常循環路１７が接続されている。この暖房通常循環路１７には三方弁１０、水熱交循環ポンプ１１、水熱交換器１２、切換弁１３、暖房用熱交換器１８、第２の分岐路１６とが順次接続されている。
【００１５】
ヒートポンプユニット３は、冷媒が充填された冷媒循環路１９を有し、この冷媒循環路１９には、圧縮機２０、蒸発器の除霜運転時冷媒の流れ方向を反転させて使用する四方弁２１、凝縮器として機能し沸上用循環路９内を流通する湯水を水熱交換器１２との間で熱交換して湯水を所定の沸上温度に沸上げる冷媒熱交換器２２、膨張弁２３および集熱器としての蒸発器２４が順に接続されている。また、蒸発器２４には、蒸発器２４の除霜運転を実行させるための蒸発器２４の温度を検知する温度センサ２５、外気を蒸発器２４に送る送風ファン２６および、この送風ファン２６を回転させる送風モータ２７を備えている。
【００１６】
暖房ユニット４は、熱媒が充填された暖房用熱媒循環路２８を有し、この暖房用熱媒循環路２８は、暖房用熱交換器１８、床暖房、パネルヒータ等の放熱部２９ａ、放熱部２９ｂ、上方を大気に開放したシスターン３０、暖房用循環ポンプ３１、戻り水温度センサ４０とが順に接続されている。また、シスターン３０に電磁弁３２を通じて水道水を供給する給水路３３が接続されている。
【００１７】
３４はリモコンを示し、このリモコン３４は、台所などの壁面に配設されて貯湯運転、給湯運転、暖房運転等を選択する操作部及び、これらの運転状態を表示する表示手段などを有している。
【００１８】
３５は運転制御手段としての制御装置で、この制御装置３５は、リモコン３４の操作で三方弁１０、切換弁１３を適宜切り換えて沸上用循環路９を循環動作させるとともヒートポンプユニット３を動作させて貯湯槽５の湯水の沸上制御を行ったり、貯湯槽５内の湯水を循環させるとともに暖房用熱媒循環路２８の熱媒を循環させて暖房運転を実行させるようになっている。
【００１９】
次に、本実施の形態の作用を説明する。
【００２０】
先ず、図２により貯湯槽５内の水を沸上げる作用について説明する。
【００２１】
給水管７から減圧弁６を介して貯湯槽５内に水道水が貯留される。そして、リモコン３４の操作により制御装置３５が制御され、三方弁１０が沸上用循環路９側に切換えられるとともに、流量調節弁１３が沸上用循環路９側に１００％の量の湯水が流れるよう調節される。そして、ヒートポンプユニット３の圧縮機２０が駆動される。これにより矢印で示すように、冷媒は、冷媒回路１９の圧縮機２０、四方弁２１、凝縮器として機能する冷媒熱交換器２２、膨張弁２３、蒸発器２４の順に流れる。蒸発器２０で大気熱を集熱し気化された冷媒は圧縮機２０に送られ、圧縮機２０で圧縮されて出た高温高圧の冷媒ガスは、冷媒熱交換器２２で熱交換される。
【００２２】
一方、沸上用循環路９の沸上用循環ポンプ１１が駆動され、矢印で示すように貯湯槽５下部の湯水が沸上用循環路９側を通じて水熱交換器１２と冷媒熱交換器２２との間で沸上用循環路９内の湯水が熱交換され湯水となって貯湯槽５上部に入り、これを繰返して貯湯槽５の上部から設定温度の約８０℃の湯水が順次積層され貯湯槽５内の湯水が沸上げられる。そして、このように、貯湯槽５内に積層された温水は、給湯管８を通じて例えば台所や浴槽に送られ給湯されたり、暖房循環路に熱を与え暖房運転などに利用される。
【００２３】
次に、図３により暖房運転初期の作用について説明する。
【００２４】
リモコン３４の操作により制御装置３５が制御され、三方弁１０が第１の分岐路１５側に切り換えられるとともに、切換弁１３が第２の分岐路１７側に１００％の量の湯水が流れるように調整されて暖房初期循環路１４が構成される。次に、水熱交循環ポンプ１１が駆動され、例えば、外気温度が１０℃未満の場合は貯湯槽５内の約８０℃の温水２００Ｌを貯湯槽５の上部より三方弁１０、水熱交換器１２、切換弁１３、暖房用熱交換器１８を通じて貯湯槽５下部へと循環される。
【００２５】
一方、暖房ユニット４の暖房用循環ポンプ３１が駆動され暖房用熱媒循環路２８内を流通する熱媒が循環される。そして、暖房初期循環路１４内を流通する約８０℃の温水の熱が暖房用熱交換器１８ですぐに熱交換されて放熱部２９ａ、放熱部２９ｂから分散して放熱され暖房運転が実行される。また、この暖房用熱交換器１８で熱交換されて約７０℃に冷やされた暖房初期循環路１４内の温水は貯湯槽５の下部へ戻され貯湯槽５上部の温水と交じり合うことがない。そして、暖房初期循環路１４を通じた暖房運転は例えば、約５０分間繰り返される。
【００２６】
次に、図４により暖房通常運転時の作用について説明する。
【００２７】
暖房初期循環路１４を通じた暖房運転が約５０分間経過すると、制御装置３５の制御により暖房通常循環路１７を通じた通常暖房運転に切り換わる。すなわち、制御装置３５の制御により三方弁１０が水熱交換器１２側に切り換えられるとともに、切換弁１３が第２の分岐路１６側に１００％の量の温水が流れるように切り換えら三方弁１０、水熱交換器１２、切換弁１３、暖房用熱交換器１８、第２の分岐路１７を通じて貯湯槽５下部へと戻る暖房通常循環路１７が形成される。そして、水熱交循環ポンプ１１が駆動され暖房通常循環路１７を通じて、貯湯槽５下部の温水が貯湯槽５下部から出て貯湯槽５下部に戻る循環が繰り返し行われる。したがって、貯湯槽５上部のと交じり合うことがない。
【００２８】
一方、暖房運転初期時と同様に、暖房通常循環路１７内を流通する温水の熱が暖房用熱交換器１８を介して暖房循環路２８内を流通する熱媒に熱交換され放熱部２９ａ、２９ｂから放熱され暖房用循環ポンプ３１を駆動した通常の暖房運転が継続して行われる。そして、この暖房通常運転は、暖房循環路２８の戻り側に設けられた戻り水温度センサ４０の検知温度が所定温度以下を検知するまで繰り返し行われる。したがって、暖房通常運転時はヒートポンプユニット３を運転することなく貯湯槽５内下部の温水の熱を利用した暖房運転が行われエネルギーの有効活用が図れることになる。
【００２９】
次に、図５により暖房ヒートポンプ運転時の作用について説明する。
【００３０】
暖房通常循環路１４を通じた暖房運転が繰り返し行われると暖房用熱交換器１８で熱交換される温水温度が徐々に低下し、その結果、暖房循環路２８内を流通する熱媒の温度が徐々に低下し、暖房用熱媒循環路２８の戻り側に設けられた戻り水温度検知センサ４０の検知温度が所定の温度以下を検知することになる。そして、戻り水温度検知センサ４０の検知温度が所定の温度以下を検知すると制御装置３５はヒートポンプユニット３を運転制御する。このヒートポンプユニット３の運転により暖房通常循環路１４内の温水は冷媒熱交換器２２により水熱交換器１２を介して再加熱され、ヒートポンプユニット３の運転による暖房運転が行われる。
【００３１】
【発明の効果】
請求項１記載のヒートポンプ給湯暖房装置によれば、暖房通常運転においても、貯湯槽内下部の温水を利用した暖房運転が実行され、エネルギーの有効活用が図られる。
【図面の簡単な説明】
【図１】本発明の一実施形態を示すヒートポンプ給湯暖房装置の構成を説明する説明図である。
【図２】同上、ヒートポンプ給湯暖房装置の沸上げ時の作用を説明する説明図である。
【図３】同上、ヒートポンプ給湯暖房装置の暖房運転初期の作用を説明する説明図である。
【図４】同上、ヒートポンプ給湯暖房装置の暖房通常運転時の作用を説明する説明図である。
【図５】同上、ヒートポンプ給湯暖房装置のヒートポンプによる暖房運転の作用を説明する説明図である。
【符号の説明】
１ ヒートポンプ給湯暖房装置
２ 貯湯ユニット
３ ヒートポンプユニット
４ 暖房ユニット
５ 貯湯槽
９ 沸上用循環路
１０ 三方弁
１１ 水熱交循環ポンプ
１２ 水熱交換器
１３ 流量調節器としての切換弁
１４ 暖房初期循環路
１５ 第１の分岐路
１６ 第２の分岐路
１７ 暖房通常循環路
１８ 暖房用熱交換器
１９ 冷媒循環路
２０ 圧縮機
２１ 四方弁
２２ 冷媒用熱交換器
２３ 膨張弁
２４ 蒸発器
２５ 温度センサ
２８ 暖房用熱媒循環路
２９ａ，２９ｂ 放熱部
３１ 暖房用循環ポンプ
３４ リモコン
３５ 制御装置
４０ 戻り水温度センサ[0001]
The present invention relates to a heat pump hot water supply / room heating device that circulates hot water in a lower portion of a hot water storage tank that has little influence on hot water supply, and uses the heat of the circulated hot water to radiate heat from a heating panel.
[0002]
[Prior art]
BACKGROUND ART Conventionally, a heat pump hot water supply / room heating device includes a heat pump 10, a hot water circuit 20, a heating circuit 30, and a control device 40, as described in, for example, JP-A-2002-89867. The control unit 40 that has received the instruction for the heating operation of the floor heating panel 32 first executes the heating initial mode. In this mode, the hot water circuit 20 and the heating circuit 30 are operated. Thereby, the heat medium of the heating circuit 30 receives heat from the hot water of the hot water circuit 20 by the heat exchanger 11 of the heat pump 10 and radiates the heat by the floor heating panel 32. Thus, the floor heating panel 32 can be quickly heated. After that, the control means 40 switches to the normal heating mode. In this mode, the refrigerant circuit 12 and the heating circuit 30 of the heat pump 10 are operated, and the heat medium receives heat from the refrigerant in the heat exchanger 11 and radiates heat in the floor heating panel 32.
[0003]
However, in such a heat pump hot water supply / room heating device, in the normal heating mode, the refrigerant circuit 12 and the heating circuit 30 of the heat pump 10 are operated, and heat is given to the heating circuit 30 by the operation of the refrigerant circuit 12, so that the hot water storage tank 25 is heated. The hot water inside is used for heating operation only in the heating initial mode.
[0004]
By the way, the hot water storage mode of this type of heat pump hot water supply / room heating device is usually executed during the nighttime when electricity rates are low. Then, the hot water stored at the time when the electricity rate is low is supplied to a kitchen or a bathtub for use. However, the hot water stored in a hot water storage tank having a large capacity often cannot be used up. Therefore, it is desired to use the hot water that cannot be used for, for example, a hot water utilization device such as a heating panel to effectively use energy.
[0005]
[Problems to be solved by the invention]
However, in the heat pump hot water supply / room heating device described in Japanese Patent Application Laid-Open No. 2002-89867, the hot water in the hot water storage tank stored in a cheap time zone at night is used only in the heating initial mode for the heating operation, and in the subsequent heating normal mode. Heating is operated by operating a heat pump at a normal electricity rate in the daytime, and it was not always satisfactory in terms of effective use of energy.
[0006]
The present invention has been made in view of such a point, and an object of the present invention is to provide a heat pump hot water supply / room heating device that can effectively utilize energy by using hot water in a lower portion of a hot water tank even in a normal heating mode.
[0007]
[Means for Solving the Problems]
The heat pump hot water supply / room heating device according to claim 1, a heat pump unit in which a compressor, a refrigerant heat exchanger, an evaporator as a heat collector, and the like are sequentially connected in series and the refrigerant is circulated, and a hot water tank from a lower part to an upper part of the hot water tank. A boiling water circulation path for laminating hot water heat-exchanged in a water heat exchanger that circulates hot water in the water heat exchange circulation pump and heat-exchanges with the refrigerant heat exchanger from an upper part of the hot water storage tank; A heating normal circulation path having a heat exchanger for heating by circulating hot water from the lower part to a lower part of the hot water storage tank by the water heat exchange circulation pump, and the heating water in the heating normal circulation path is circulated by the heating circulation pump to perform the heating heat exchange. In a heat pump hot water supply / room heating device provided with a heating medium circulation path for exchanging heat by a heater and radiating heat from a heating panel, a return water temperature sensor is provided on a return side of the heating medium circulation path, and the heating medium circulation path is provided. During road operation, when the temperature detected by the return water temperature sensor is equal to or higher than a predetermined temperature, the water heat exchange pump is operated to circulate hot water at the lower part of the hot water storage tank, and the heating operation is performed by the heat of the hot water. When the temperature detected by the sensor is equal to or lower than a predetermined temperature, the heating operation is performed by boiling the hot water in the heating normal circulation path by the heat pump unit.
[0008]
With this configuration, even in the normal heating operation, the heating operation using the hot water in the lower portion of the hot water tank is executed, and the energy can be effectively used.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0010]
【Example】
As shown in FIG. 1, the heat pump hot water supply / room heating device 1 includes a hot water storage unit 2, a heat pump unit 3, and a heating unit 4.
[0011]
The hot water storage unit 2 includes a hot water storage tank 5. The hot water storage tank 5 employs a hot water supply system of a first-stop push-up type, and a water supply pipe for supplying tap water through a pressure reducing valve 6 below the hot water storage tank 5. 7 is connected, and a hot water supply pipe 8 for supplying hot water to a hot water supply destination such as a kitchen or a bathroom is connected to an upper portion thereof.
[0012]
To the hot water storage tank 5, there is connected a boiling circulation path 9 that exits from a lower part of the hot water storage tank 5 and returns to an upper part of the hot water storage tank 5. A three-way valve 10 is provided in the boiling circulation circuit 9 from below the hot water storage tank 5, and an intermediate portion of the heating circulation circuit 9 exits the hot water storage unit 2 and is disposed in the heat pump unit 3. A water heat exchange pump 11 and a water heat exchanger 12 for forcibly drawing hot water from the lower part of the hot water storage tank 5 into the boiling circulation path 9 and circulating the hot water in the upper part of the hot water storage tank 5 are provided. A switching valve 13 is disposed between the water heat exchanger 12 and the upper part of the hot water storage tank 5 as a flow controller.
[0013]
Further, the heating tank 5 is connected to an initial heating circuit 14 for taking out hot water from the upper part of the hot water tank 5 and circulating the hot water in the lower part of the hot water tank 5. In the heating initial circulation path 14, a first branch path 15, a three-way valve 10, a water heat exchange pump 11, a water heat exchanger 12, a switching valve 13, a heating heat exchanger 18, a first branch path 15 from the top of the hot water tank 5. The two branch paths 16 and the lower part of the hot water storage tank 5 are sequentially connected.
[0014]
In addition, a heating normal circulation path 17 for circulating hot water from the lower part of the hot water tank 5 to the lower part of the hot water tank 5 is connected to the lower part of the hot water tank 5. The three-way valve 10, the water heat exchange pump 11, the water heat exchanger 12, the switching valve 13, the heating heat exchanger 18, and the second branch 16 are sequentially connected to the heating normal circulation path 17.
[0015]
The heat pump unit 3 has a refrigerant circuit 19 filled with a refrigerant. The refrigerant circuit 19 has a compressor 20 and a four-way valve 21 for reversing the flow direction of the refrigerant during the defrosting operation of the evaporator. A refrigerant heat exchanger 22 that functions as a condenser and exchanges heat between the hot water flowing through the boiling circulation circuit 9 and the water heat exchanger 12 to raise the hot water to a predetermined boiling temperature, and an expansion valve 23. And an evaporator 24 as a heat collector is connected in order. Further, the evaporator 24 includes a temperature sensor 25 for detecting the temperature of the evaporator 24 for executing the defrosting operation of the evaporator 24, a blower fan 26 for sending outside air to the evaporator 24, and a rotation of the blower fan 26. A blower motor 27 is provided.
[0016]
The heating unit 4 has a heating-medium circulation path 28 filled with a heating medium, and the heating-medium circulation path 28 includes a heating heat exchanger 18, a radiator 29a such as a floor heater, a panel heater, and the like. A radiator 29b, a cistern 30 whose upper part is open to the atmosphere, a circulation pump 31 for heating, and a return water temperature sensor 40 are sequentially connected. Further, a water supply channel 33 for supplying tap water to the cistern 30 through an electromagnetic valve 32 is connected.
[0017]
Reference numeral 34 denotes a remote controller. The remote controller 34 is provided on a wall surface of a kitchen or the like, and has an operation unit for selecting a hot water storage operation, a hot water supply operation, a heating operation, and the like, and a display unit for displaying these operation states. I have.
[0018]
Reference numeral 35 denotes a control device as operation control means. The control device 35 operates the remote control 34 to appropriately switch the three-way valve 10 and the switching valve 13 to circulate the boiling circulation path 9 and operate the heat pump unit 3. The heating operation of the hot water tank 5 is controlled by circulating the hot water in the hot water tank 5 and the heat medium in the heating medium circulation path 28 is circulated.
[0019]
Next, the operation of the present embodiment will be described.
[0020]
First, the operation of boiling water in the hot water storage tank 5 will be described with reference to FIG.
[0021]
Tap water is stored in the hot water storage tank 5 from the water supply pipe 7 through the pressure reducing valve 6. Then, the control device 35 is controlled by operating the remote controller 34, the three-way valve 10 is switched to the boiling circulation path 9 side, and the flow rate control valve 13 is turned to the boiling circulation path 9 side so that 100% of hot and cold water is supplied to the boiling circulation path 9 side. Adjusted to flow. Then, the compressor 20 of the heat pump unit 3 is driven. Thereby, as shown by the arrow, the refrigerant flows in the order of the compressor 20, the four-way valve 21, the refrigerant heat exchanger 22 functioning as a condenser, the expansion valve 23, and the evaporator 24 in the refrigerant circuit 19. The refrigerant that has collected atmospheric heat in the evaporator 20 and vaporized is sent to the compressor 20, and the high-temperature and high-pressure refrigerant gas compressed and discharged in the compressor 20 is heat-exchanged in the refrigerant heat exchanger 22.
[0022]
On the other hand, the boiling circulation pump 11 of the heating circulation path 9 is driven, and the hot and cold water in the lower part of the hot water storage tank 5 passes through the boiling circulation path 9 side as shown by the arrows, and the water heat exchanger 12 and the refrigerant heat exchanger 22 are turned on. The hot and cold water in the boiling circulation path 9 is heat-exchanged into hot water and enters the upper portion of the hot water storage tank 5, and this is repeated, and hot water at a set temperature of about 80 ° C. is sequentially stacked from the upper part of the hot water storage tank 5. Hot water in the hot water storage tank 5 is boiled. Then, the hot water laminated in the hot water storage tank 5 is sent to a kitchen or a bath tub through the hot water supply pipe 8 to be supplied with hot water, or heat is applied to a heating circuit to be used for a heating operation or the like.
[0023]
Next, the operation at the beginning of the heating operation will be described with reference to FIG.
[0024]
The controller 35 is controlled by the operation of the remote controller 34 so that the three-way valve 10 is switched to the first branch 15 and the switching valve 13 is set so that 100% of the hot and cold water flows to the second branch 17. The heating initial circulation path 14 is adjusted. Next, the water heat exchange pump 11 is driven. For example, when the outside air temperature is lower than 10 ° C., 200 L of hot water of about 80 ° C. in the hot water storage tank 5 is supplied from the upper part of the hot water storage tank 5 to the three-way valve 10 and the water heat exchanger. The water is circulated to the lower part of the hot water storage tank 5 through the switching valve 13 and the heat exchanger 18 for heating.
[0025]
On the other hand, the heating circulation pump 31 of the heating unit 4 is driven to circulate the heat medium flowing in the heating heat medium circulation path 28. Then, the heat of the hot water of about 80 ° C. circulating in the heating initial circulation path 14 is immediately exchanged by the heating heat exchanger 18 and dispersed and radiated from the heat radiating portions 29 a and 29 b to perform the heating operation. You. In addition, the hot water in the heating initial circulation path 14 that has been cooled down to about 70 ° C. by heat exchange in the heating heat exchanger 18 is returned to the lower part of the hot water storage tank 5 and does not mix with the hot water in the upper part of the hot water storage tank 5. . The heating operation through the heating initial circulation path 14 is repeated, for example, for about 50 minutes.
[0026]
Next, the operation during the normal heating operation will be described with reference to FIG.
[0027]
When the heating operation through the heating initial circulation path 14 elapses for about 50 minutes, the mode is switched to the normal heating operation through the heating normal circulation path 17 under the control of the control device 35. That is, under the control of the control device 35, the three-way valve 10 is switched to the water heat exchanger 12 side, and the switching valve 13 is switched so that 100% of the hot water flows to the second branch passage 16 side. The heating normal circulation path 17 returning to the lower part of the hot water storage tank 5 through the water heat exchanger 12, the switching valve 13, the heating heat exchanger 18, and the second branch path 17 is formed. Then, the water heat exchange pump 11 is driven, and the circulation of the warm water in the lower part of the hot water tank 5 from the lower part of the hot water tank 5 to the lower part of the hot water tank 5 is repeated through the heating normal circulation path 17. Therefore, it does not mix with the upper part of the hot water storage tank 5.
[0028]
On the other hand, as in the initial stage of the heating operation, the heat of the hot water flowing in the heating normal circulation path 17 is exchanged with the heat medium flowing in the heating circulation path 28 via the heating heat exchanger 18 and the heat radiating portions 29a, The normal heating operation in which the heat is radiated from 29b and drives the heating circulation pump 31 is continued. The normal heating operation is repeatedly performed until the detected temperature of the return water temperature sensor 40 provided on the return side of the heating circulation path 28 detects a predetermined temperature or less. Accordingly, during the normal heating operation, the heating operation using the heat of the hot water in the lower portion of the hot water storage tank 5 is performed without operating the heat pump unit 3, and the energy can be effectively used.
[0029]
Next, the operation during the operation of the heating heat pump will be described with reference to FIG.
[0030]
When the heating operation through the heating normal circulation path 14 is repeatedly performed, the temperature of the hot water exchanged by the heating heat exchanger 18 gradually decreases, and as a result, the temperature of the heat medium flowing through the heating circulation path 28 gradually increases. And the detection temperature of the return water temperature detection sensor 40 provided on the return side of the heating heat medium circulation path 28 detects below a predetermined temperature. Then, when the detected temperature of the return water temperature detection sensor 40 detects a temperature equal to or lower than a predetermined temperature, the control device 35 controls the operation of the heat pump unit 3. By the operation of the heat pump unit 3, the hot water in the heating normal circulation path 14 is reheated by the refrigerant heat exchanger 22 via the water heat exchanger 12, and the heating operation by the operation of the heat pump unit 3 is performed.
[0031]
【The invention's effect】
According to the heat pump hot water supply / room heating device of the first aspect, even in the normal heating operation, the heating operation using the hot water in the lower portion of the hot water storage tank is executed, and the energy is effectively used.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram illustrating a configuration of a heat pump hot water supply / room heating device according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram illustrating an operation of the heat pump hot water supply / room heating device at the time of boiling.
FIG. 3 is an explanatory diagram illustrating an operation of a heat pump hot water supply / room heating device in an initial heating operation.
FIG. 4 is an explanatory diagram illustrating an operation of the heat pump hot water supply / room heating device in a normal heating operation.
FIG. 5 is an explanatory diagram illustrating an operation of a heating operation by the heat pump of the heat pump hot water supply / room heating system.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heat pump hot-water supply / heating apparatus 2 Hot-water storage unit 3 Heat-pump unit 4 Heating unit 5 Hot-water storage tank 9 Boiling circuit 10 Three-way valve 11 Water-heat exchange pump 12 Water-heat exchanger 13 Switching valve as a flow controller 14 Heating initial circuit Reference Signs List 15 first branch path 16 second branch path 17 heating normal circulation path 18 heating heat exchanger 19 refrigerant circulation path 20 compressor 21 four-way valve 22 refrigerant heat exchanger 23 expansion valve 24 evaporator 25 temperature sensor 28 heating Heat medium circulation passages 29a, 29b Heat radiating section 31 Heating circulation pump 34 Remote controller 35 Control device 40 Return water temperature sensor

Claims (1)

圧縮機、冷媒熱交換器、集熱器としての蒸発器等を順次直列接続され冷媒が循環されるヒートポンプユニットと、貯湯槽の下部から上部に貯湯槽内の湯水を水熱交循環ポンプにより循環され前記冷媒熱交換器と熱交換される水熱交換器にて熱交換された温水を貯湯槽の上部から積層させる沸上用循環路と、貯湯槽下部から貯湯槽下部へ前記水熱交循環ポンプにより温水を循環させ暖房用熱交換器を有する暖房通常循環路と、この暖房通常循環路内の温水を暖房用循環ポンプにより循環され前記暖房熱交換器により熱交換させて暖房パネルから放熱させる暖房用熱媒循環路を備えたヒートポンプ給湯暖房装置において、前記暖房用熱媒循環路の戻り側に戻り水温度センサを設け、前記暖房用熱媒循環路運転時、戻り水温度センサが検知する温度が所定温度以上の時は前記水熱交循環ポンプを動作させて貯湯槽下部の温水を循環させこの温水の熱により暖房運転を行い、戻り水温度センサが検知する温度が所定温度以下を検知する時は前記ヒートポンプユニットにより暖房通常循環路内の温水を沸き上げて暖房運転を行うようにしたことを特徴とするヒートポンプ給湯暖房装置。A heat pump unit in which a compressor, a refrigerant heat exchanger, an evaporator as a heat collector, etc. are sequentially connected in series and the refrigerant is circulated, and water from the lower part to the upper part of the hot water tank is circulated by a water heat exchange pump. A boiling water circulation path for laminating hot water heat-exchanged in the water heat exchanger, which is heat-exchanged with the refrigerant heat exchanger, from the upper part of the hot water tank, and the water heat exchange circulation from the lower part of the hot water tank to the lower part of the hot water tank. A heating normal circulation path having a heat exchanger for heating by circulating hot water by a pump, and hot water in the heating normal circulation path is circulated by a circulation pump for heating and exchanged heat by the heating heat exchanger to release heat from a heating panel. In a heat pump hot water supply / room heating device provided with a heating medium circulation path for heating, a return water temperature sensor is provided on a return side of the heating medium circulation path for heating, and the return water temperature sensor detects during operation of the heating medium circulation path for heating. temperature When the temperature is equal to or higher than the predetermined temperature, the water heat circulating pump is operated to circulate hot water at the lower part of the hot water tank, a heating operation is performed by the heat of the hot water, and the temperature detected by the return water temperature sensor is lower than the predetermined temperature. A heat pump hot water supply / room heating apparatus characterized in that heating operation is performed by boiling hot water in a normal heating circuit by the heat pump unit.
JP2002347583A 2002-11-29 2002-11-29 Heat pump water heater / heater Expired - Fee Related JP3857221B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102326038A (en) * 2009-02-24 2012-01-18 大金工业株式会社 Heat pump system
KR101507438B1 (en) 2008-02-04 2015-03-31 엘지전자 주식회사 Heat pump heating apparatus and Control method of the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101507438B1 (en) 2008-02-04 2015-03-31 엘지전자 주식회사 Heat pump heating apparatus and Control method of the same
CN102326038A (en) * 2009-02-24 2012-01-18 大金工业株式会社 Heat pump system

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