JP2004317093A

JP2004317093A - Heat pump hot water supply and heating apparatus

Info

Publication number: JP2004317093A
Application number: JP2003115326A
Authority: JP
Inventors: Masahiko Yaguchi; 正彦矢口
Original assignee: Toshiba Electric Appliances Co Ltd
Current assignee: Toshiba Electric Appliances Co Ltd
Priority date: 2003-04-21
Filing date: 2003-04-21
Publication date: 2004-11-11

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat pump hot water supply and heating apparatus, using an operational capability variable heat pump device as a heat source, whereby during hot water single operation without heating operation, and during heating single operation without hot water supply operation, the heat pump device is operated at low output to hold down noise and reduce power consumption, and during the simultaneous heating and hot water supply operation, the device is operated at maximum capacity to prevent running-out of hot water. <P>SOLUTION: This heat pump hot water supply and heating apparatus includes: a hot water storing device 2; a heating device 4; and the operating capability variable heat pump device 3. The heat pump device 3 is taken as a heat source to perform the hot water storing operation for boiling hot water in a storing tank 6 of the hot water storing device 2 and the heating operation for radiating heat from a radiator of the heating device. During the hot water storing single operation or during the heating single operation, the heat pump device 3 is operated with the capability depending on the respective loads. During the hot water storing and heating operation for simultaneously performing the hot water storing operation and the heating operation, the heat pump device 3 is operated at the maximum capability. The capability is the sum of the capability during the hot water storing single operation and the capability during the heating single operation. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
本発明は、熱源にヒートポンプ装置を用いたヒートポンプ給湯暖房装置に関する。
【０００２】
【従来技術】
従来、１台のヒートポンプ装置によって給湯単独運転・冷房給湯同時運転・暖房給湯同時運転・冷房給湯同時運転・暖房給湯同時運転・冷房風呂追い焚き同時運転・暖房風呂追い焚き同時運転・冷房単独運転・暖房単独運転の７つの運転モードを行えるヒートポンプ給湯冷暖房装置（例えば、特許文献１参照）がある。
【０００３】
【特許文献１】
特開平５−３９９５７号公報（第８頁乃至第１１頁、図２乃至図１２）
【０００４】
【発明が解決しようとする課題】
しかし、従来のヒートポンプ給湯冷暖房装置では、ヒートポンプ装置は室外に設置されている。そして、仮にヒートポンプ装置の運転能力を暖房運転を行わない給湯単独運転または、給湯運転を行わない暖房単独運転に応じた低出力で運転を行うように設定したとすると窓を開けての使用環境では騒音は低く抑えられるが、給湯暖房同時運転を行う場合は運転能力不足により貯湯槽の湯切れを生じたり暖房能力が不足するという問題が生じる。また、ヒートポンプ装置の運転能力を、暖房給湯同時運転を行えるように高出力で運転を行うように設定した場合、暖房運転を行わない給湯単独運転または、給湯運転を行わない暖房単独運転を行う場合には必要以上の電力を要するため不経済であったり、暖房運転を必要としない窓を開けての使用環境においては騒音の原因となるなどの問題がある。
【０００５】
本発明は、このような点に鑑みなされたもので、運転能力可変型のヒートポンプ装置を熱源とし、暖房運転を行わない給湯単独運転時、給湯運転を行わない暖房単独運転時は低出力でヒートポンプ装置を運転して騒音を低く抑えるとともに消費電力を低減し、暖房給湯同時運転時は最大能力で運転し湯切れのないヒートポンプ給湯装置を提供することを目的とする。
【０００６】
【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、貯湯槽を有する貯湯装置と、放熱器を有する暖房装置と、運転能力可変型のヒートポンプ装置とを備え、このヒートポンプ装置を熱源とし、前記貯湯装置の貯湯槽内の湯水を沸き上げる貯湯運転と、暖房装置の放熱器から放熱させる暖房運転を行うヒートポンプ給湯暖房装置において、貯湯単独運転時または暖房単独運転時はそれぞれの負荷に応じた能力でヒートポンプ装置を運転し、貯湯運転と暖房運転を同時に行う貯湯暖房運転時は貯湯単独運転時の能力と暖房単独運転時の能力とを加えた最大能力でヒートポンプ装置を運転するようにしたものである。
【０００７】
そして、この構成により、暖房運転を行わない給湯単独運転時、給湯運転を行わない暖房単独運転時は騒音を低く抑えるとともに、消費電力を低減でき、暖房給湯同時運転時は最大能力で給湯暖房運転が行え湯切れの恐れがなくなるとともに、暖房能力不足が防止される。
【０００８】
請求項２記載のヒートポンプ給湯暖房装置は、請求項１記載のヒートポンプ給湯暖房装置において、貯湯槽に、貯湯槽内の残湯量を検知する残湯量検知手段を設け、この残湯量検知手段で残湯量が所定量以下であることを検知した時、貯湯運転を前記ヒートポンプ装置の最大能力で運転するようにしたものである。
【０００９】
そして、この構成により、貯湯槽内の残湯量が少なくなった場合、ヒートポンプ装置が最大能力で運転されるため、単位時間当たりの沸き上げ量が増え沸き上げる時間が短縮され湯切れに素早く対応できる。
【００１０】
請求項３記載のヒートポンプ給湯暖房装置は、請求項１記載のヒートポンプ給湯暖房装置において、貯湯槽内に熱交換器を設け、この熱交換器に浴槽内の湯を循環路を介して循環させる追い焚き機能を有し、この追い焚き機能動作時、貯湯運転を前記ヒートポンプ装置の最大能力で運転するようにしたものである。
【００１１】
そして、この構成により、浴槽内の湯の追い焚き機能動作時、ヒートポンプ装置が最大能力で運転されるため、単位時間当たりの沸き上げ量が増え沸き上げる時間が短縮され湯切れに素早く対応できる。
【００１２】
請求項４記載のヒートポンプ給湯暖房装置は、請求項１記載のヒートポンプ給湯暖房装置において、外気温度検知手段を設け、この外気温度検知手段で外気温が所定の温度以下を検知した時は貯湯運転を前記ヒートポンプ装置の最大能力で運転し、外気温が所定の温度以下を検知しない時は通常の運転能力でヒート装置を運転するようにしたものである。
【００１３】
そして、この構成により、外気温度検知手段で外気温が所定の温度以下を検知した時、ヒートポンプ装置が最大能力で運転され、単位時間当たりの沸き上げ量が増えるため所定時間内に沸き上げることができ、湯切れの恐れがない。また、外気温が所定の温度以下を検知しない時は通常の低出力でヒートポンプ装置を運転するため騒音が低く抑えられる。
【００１４】
【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。
【００１５】
【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、貯湯装置２と、ヒートポンプ装置３と、暖房装置４と、風呂追い焚き装置５とを備えている。
【００１６】
貯湯装置２は、貯湯槽６を備え、この貯湯槽６は、先止押上式の給湯方式を採用しており、貯湯槽６の下部には減圧弁７を介して水道水を給水する給水管８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浴槽などの給湯先に給湯する給湯管９が接続されている。
【００１７】
また、貯湯槽６の側面には、貯湯槽６内での例えば６０Ｌ、１８０Ｌおよび４３０Ｌなどの各残湯量に対応した高さ位置に貯湯槽６内の湯水温度を検知する残湯量検知手段としの残湯サーミスタ１０が配設されているとともに、貯湯槽６の底部側には全量沸上時の湯水温度を検知する水温湯温サーミスタ１１が配設されている。
【００１８】
また、貯湯槽６には、貯湯槽６の下部から出て貯湯槽６の上部に戻る沸上用循環路１２が接続されている。この沸上用循環路１２には貯湯槽６の下側から三方弁１３と、この沸上用循環路１２の中間部は貯湯装置２から出てヒートポンプ装置３内に配置され、このヒートポンプ装置３内において貯湯槽６の下部の湯水を沸上用循環路１２内に強制的に引き込んで貯湯槽６の上部に循環させる水熱交循環ポンプ１４と水熱交換器１５とが配設され、また、水熱交換器１５と貯湯槽６上部との間には流量調節器としての切換弁１６が配設されている。
【００１９】
また、貯湯槽６には、貯湯槽６の上部から湯水を取り出し貯湯槽６の下部に湯水を循環させる暖房初期循環路１７が接続されている。この暖房初期循環路１７は貯湯槽６の上部から第１の分岐路１８、三方弁１３、水熱交循環ポンプ１４、水熱交換器１５、切換弁１６、暖房用熱交換器１９、第２の分岐路２０、貯湯槽６下部と順次接続されている。
【００２０】
また、貯湯槽６下部には、貯湯槽６下部から出て貯湯槽６下部に湯水を循環させる暖房通常循環路２１が接続されている。この暖房通常循環路２１には三方弁１３、水熱交循環ポンプ１４、水熱交換器１５、切換弁１６、暖房用熱交換器１９、第２の分岐路２０とが順次接続されている。
【００２１】
ヒートポンプ装置３は、冷媒が充填された冷媒循環路２２を有し、この冷媒循環路２２には、運転能力可変型の圧縮機２３、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２４、凝縮器として機能し沸上用循環路１２内を流通する湯水を水熱交換器１５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２５、膨張弁２６および集熱器としての蒸発器２７が順に接続されている。また、蒸発器２７には、蒸発器２７の除霜運転を実行させるための蒸発器２７の温度を検知する温度センサ２８、外気を蒸発器２７に送る送風ファン２９および、この送風ファン２９を回転させる送風モータ３０を備えている。
【００２２】
暖房装置４は、熱媒が充填された暖房用熱媒循環路３１を有し、この暖房用熱媒循環路３１は、暖房用熱交換器１９、床暖房、パネルヒータ等の放熱器３２ａ、放熱器３２ｂ、上方を大気に開放したシスターン３３、暖房用循環ポンプ３４、戻り水温度センサ３５とが順次接続されている。
【００２３】
風呂追い焚き装置５は、浴槽３６と貯湯槽６内上部に配設された追焚き用熱交換器３７と、この貯湯槽６と追焚き用熱交換器３７との間を接続し貯湯槽６内の湯を循環させ加熱する追い焚き循環路３８などから構成されている。そして、この追焚き循環路３８は、追焚き循環ポンプ３９、三方弁４０、風呂湯温検知手段としの風呂湯温検知センサ４１などからなっている。なお、４２は浴槽給湯用のミキシングバルブで給水管８からの水道水と貯湯槽６からの湯とを混合して適温の湯を浴槽３６に供給する機能を有する。４３はホッパで断水などで給水圧力が低下した場合ミキシングバルブ４２と浴槽３６とを分離する機能を有している。
【００２４】
４４はリモコンを示し、このリモコン４４は、台所などの壁面に配設されて貯湯単独運転、暖房単独運転、貯湯暖房同時運転および風呂追い焚き運転等を選択する図示しない操作部及び、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。
【００２５】
４５は運転制御手段としての制御装置で、この制御装置４５は、リモコン４４の操作で三方弁１３、切換弁１６、三方弁４０を適宜切り換えて沸上用循環路１２内の水を循環動作させるとともヒートポンプ装置３を動作させて貯湯槽６の湯水の沸上制御を行ったり、貯湯槽６内の湯水を循環させるとともに暖房用熱媒循環路３１の熱媒を循環させて暖房運転を実行させたり、追焚き用循環路３８を動作させて浴槽３６内の湯を追い焚き加熱させるようになっている。また、４６は外気温を検知する外気温検知手段としの外気温検知センサである。
【００２６】
次に、本実施の形態の作用を説明する。
【００２７】
先ず、図２により貯湯槽６内の水を沸上げる貯湯単独運転の作用について説明する。
【００２８】
貯湯単独運転は主に昼間の電気料金時間帯より電気料金の安い夜間の時間帯に行われる。即ち、給水管８から減圧弁７を介して貯湯槽６内に水道水が貯留される。そして、リモコン４４の操作により制御装置４５が制御され、三方弁１３が沸上用循環路１２側に切換えられるとともに、流量調節弁１６が沸上用循環路１２側に１００％の量の湯水が流れるよう調節される。そして、ヒートポンプ装置３の圧縮機２０が例えば、５．４ＫＷの出力で駆動される。これにより矢印で示すように、冷媒は、冷媒回路２２の圧縮機２３、四方弁２４、凝縮器として機能する冷媒熱交換器２５、膨張弁２６、蒸発器２７の順に流れる。そして、蒸発器２０で大気熱を集熱し気化された冷媒は圧縮機２３に送られ、圧縮機２３で圧縮されて出た高温高圧の冷媒ガスは、冷媒熱交換器２５で水熱交換器１５に熱交換させる。
【００２９】
一方、沸上用循環路１２の沸上用循環ポンプ１４が駆動され、矢印で示すように貯湯槽６下部の湯水が沸上用循環路１２側を通じて水熱交換器１５と冷媒熱交換器２５との間で沸上用循環路１２内の湯水が熱交換され湯水となって貯湯槽６上部に入り、これを繰返して貯湯槽６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６内の湯水が沸上げられ水温湯温サーミスタ１１が全量沸き上げを検知するまで沸き上げが繰り返し行われる。そして、このように、貯湯槽６内に積層された湯水は、給湯管９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３１に熱を与え暖房運転などに利用される。
【００３０】
次に、図３により朝方の暖房運転初期の作用について説明する。
【００３１】
朝方の暖房運転初期運転は、暖房運転の立ち上がりの速さが要求され、そのため、貯湯槽６内上部の沸き上げられた湯水の熱が利用される。即ち、リモコン４４の操作により暖房運転が選択されると制御装置４５が制御され、三方弁１３が第１の分岐路１８側に切り換えられるとともに、切換弁１６が第２の分岐路２０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１７が構成される。次に、水熱交循環ポンプ１４が駆動され、例えば、外気温度が１０℃未満の場合は貯湯槽６内の約８０℃の温水２００Ｌを貯湯槽６の上部より三方弁１１３、水熱交換器１５、切換弁１６、暖房用熱交換器１９を通じて貯湯槽６下部へと循環される。
【００３２】
一方、暖房装置４の暖房用循環ポンプ３４が駆動され暖房用熱媒循環路３１内を流通する熱媒が循環される。そして、暖房初期循環路１７内を流通する約８０℃の湯水の熱が暖房用熱交換器１９ですぐに熱交換されて放熱器３２ａ、放熱器３２ｂから分散して放熱され暖房初期運転が行われる。また、この暖房用熱交換器１９で熱交換されて約７０℃に冷やされた暖房初期循環路１７内の温水は貯湯槽６上部の湯水と交じり合うことなく貯湯槽６の下部へ戻される。そして、暖房初期循環路１７を通じた暖房運転は例えば、約５０分間繰り返される。
【００３３】
次に、図４によりヒートポンプ装置３を用いない暖房単独運転時の作用について説明する。
【００３４】
暖房初期循環路１７を通じた暖房運転が約５０分間経過すると、制御装置４４の制御により暖房通常循環路２１を通じたヒートポンプ装置３を用いない暖房単独運転に切り換わる。即ち、制御装置４５の制御により三方弁１３が水熱交換器１５側に切り換えられるとともに、切換弁１６が第２の分岐路２０側に１００％の量の温水が流れるように切り換えられ、貯湯槽６下部から出て三方弁１３、水熱交換器１５、切換弁１６、暖房用熱交換器１９、第２の分岐路２０を通じて貯湯槽６下部へと戻る暖房通常循環路２１が形成される。そして、水熱交循環ポンプ１４が駆動され暖房通常循環路２１を通じて、貯湯槽６下部の湯水が貯湯槽６下部から出て貯湯槽６下部に戻る循環が繰り返し行われる。
【００３５】
一方、暖房初期運転時と同様に、暖房通常循環路２１内を流通する温水の熱が暖房用熱交換器１９を介して暖房循環路３１内を流通する熱媒に熱交換され放熱器３２ａ、３２ｂから放熱され暖房用循環ポンプ３４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３１の戻り側に設けられた戻り水温度センサ３５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装置３を運転することなく貯湯槽６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。
【００３６】
次に、図５により朝方以降のヒートポンプ装置を用いた暖房ヒートポンプ運転時の作用について説明する。
【００３７】
暖房通常循環路１７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１９で熱交換される湯水温度が徐々に低下し、その結果、暖房循環路３１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３１の戻り側に設けられた戻り水温度検知センサ３５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３５の検知温度が所定の温度以下を検知すると制御装置４５はヒートポンプ装置３を運転制御する。このヒートポンプ装置３の運転は例えば１．６ＫＷの出力により騒音を低く抑えて行われ、暖房通常循環路１７内の温水は冷媒熱交換器２５により水熱交換器１５を介して再加熱され、ヒートポンプ装置３の運転による暖房運転が行われる。
【００３８】
次に、図６により貯湯、暖房同時運転時の作用について説明する。
【００３９】
貯湯、暖房同時運転は主に電力料金の安い夜間の時間帯に貯湯しながら暖房運転が行われる。即ち、リモコン４４から貯湯、暖房同時運転が選択され、制御装置４５の制御により三方弁１３が水熱交換器１５側に切り換えられるとともに、切換弁１６が暖房通常循環路２１側と沸上用循環路１２側との両側に沸き上げられた湯水が流れるように調整される。
【００４０】
そして、ヒートポンプ装置３の圧縮機２３が例えば、給湯単独運転の出力５．４ＫＷと暖房単独運転の出力１．６ＫＷを加えた最大運転能力７．０ＫＷの出力で駆動される。これにより冷媒は給湯単独運転時と同様に冷媒回路２２内を流通し、蒸発器２０で大気熱を集熱し気化された冷媒は圧縮機２３に送られ、圧縮機２３で圧縮されて出た高温高圧の冷媒ガスは、冷媒熱交換器２５で水熱交換器１５と熱交換されることとなる。
【００４１】
一方、沸上用循環路１２の沸上用循環ポンプ１４が駆動され、矢印で示すように貯湯槽６下部から出た湯水が三方弁１３、水熱交循環ポンプ１４、水熱交換器１５と流れ、水熱交換器１５と冷媒熱交換器２５との間で沸上用循環路１２内の湯水が熱交換され湯水となり、この湯水が切換弁１６により分流され、その一部が貯湯槽６上部に入り、これを繰返して貯湯槽６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６内の湯水が沸上げられる。
【００４２】
また、切換弁１６により分流された他の一部の湯水は暖房通常循環路１７に流れる。そして、暖房用循環ポンプ３４が駆動され暖房循環路３１内の熱媒は暖房循環路３１内を循環し、この熱媒は暖房用熱交換器１９で熱交換されて加熱され放熱器３２ａ、３２ｂより放熱され暖房に供される。
【００４３】
したがって、貯湯、暖房同時運転時はヒートポンプ装置が最大運転能力で運転されるため、貯湯槽６内の湯水の湯切れがないとともに、暖房能力不足になることがなくなる。
【００４４】
次に残湯量が低下した場合の貯湯運転の作用について説明する。
【００４５】
来客などにより大量な湯が使用されると残湯量が低下し湯切れの恐れが生じる。
このような場合、例えば、残湯量６０Ｌに対応する残湯サーミスタ１０が検知して残湯量が少なく湯切れの恐れを検知する。そして、この検知信号により図２に示されるように沸き上げ循環路１２が形成されるとともに、ヒートポンプ装置３が最大運転能力７．０ＫＷの出力で運転されるように制御される。これにより、単位時間当たりの沸き上げ量を増やして素早く貯湯槽６内の水を沸き上げることができ、湯切れの恐れがなくなる。
【００４６】
次に、次に、図７により風呂追い焚き機能動作時の作用について説明する。
【００４７】
一定時間毎に浴槽３６内の湯水の湯温を確認して湯温を一定に保つ自動保温運転が行われる。即ち、三方弁４０が追焚き循環路３８側に切り換えられ追焚き循環ポンプ３９を一定時間毎に駆動して、浴槽３６内の湯水を追焚き循環路３８内に循環させ風呂湯温検知センサ４１により湯温を監視する。そして、風呂湯温検知センサ４１が所定の湯温以下を検知すると湯温が所定湯温になるまで追焚き循環ポンプ３９を駆動し、矢印の如く浴槽３６内の湯水を追焚き用熱交換器３７内を循環させる。そして、貯湯槽６内の湯水の熱と浴槽３６内の湯水とを熱交換してを風呂追い焚き加熱が行われる。これにより、貯湯槽６内の湯水は温度追焚き用熱交換器３７を介して放熱され低下される。
【００４８】
一方、風呂追い焚き加熱が行われると図２に示されるように沸き上げ循環路１２が形成されるとともに、ヒートポンプ装置３が最大運転能力７．０ＫＷの出力で運転されるように制御される。これにより、単位時間当たりの沸き上げ量を増やして沸き上げ時間が短縮され貯湯槽６内の湯水の湯切れを素早く防止する。
【００４９】
次に、外気温度が低下した場合の作用について説明する。
【００５０】
冬季のように外気温度が低下すると水温が低下する。そして、このように水温が低い状態において、例えば、貯湯運転を行うと貯湯槽６内の水を沸き上げる時間が長くなり夜間電力を利用した料金の安い時間帯に所定量の湯を沸き上げられず不経済であ。
【００５１】
このような、外気温度が低い場合、外気温検知手段４６が外気温度の低下を検知して図２に示されるように沸き上げ循環路１２が形成されるとともに、ヒートポンプ装置３が最大運転能力７．０ＫＷの出力で運転されるように制御される。これにより、単位時間当たりの沸き上げ量を増やして沸き上げ所定時間内に貯湯槽６内の水を沸き上げることができ経済的であるとともに、湯切れの恐れがなくなる。
【００５２】
【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、暖房運転を行わない給湯単独運転時、給湯運転を行わない暖房単独運転時は騒音を低く抑えるとともに、消費電力を低減でき、暖房給湯同時運転時は最大能力で給湯暖房運転が行え湯切れおよび暖房能力不足が防止される。
【００５３】
請求項２記載のヒートポンプ給湯暖房装置によれば、貯湯槽内の残湯量が少なくなった場合、ヒートポンプ装置が最大能力で運転されるため、単位時間当たりの沸き上げ量が増え沸き上げる時間が短縮され湯切れに素早く対応できる。
【００５４】
請求項３記載のヒートポンプ給湯暖房装置によれば、浴槽内の湯の追い焚き機能動作時、ヒートポンプ装置が最大能力で運転されるため、単位時間当たりの沸き上げ量が増え沸き上げる時間が短縮され湯切れに素早く対応できる。
【００５５】
請求項４記載のヒートポンプ給湯暖房装置によれば、外気温度検知手段で外気温が所定の温度以下を検知した時、ヒートポンプ装置が最大能力で運転され、単位時間当たりの沸き上げ量が増えるため所定時間内に沸き上げることができ、湯切れの恐れがない。また、外気温が所定の温度以下を検知しない時は通常の低出力でヒートポンプ装置を運転するため騒音が低く抑えられる。
【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貯湯運転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装置による暖房運転の作用を説明する説明図である。
【図６】同上、ヒートポンプ給湯暖房装置の貯湯運転・暖房運転同時運転時の作用を説明する説明図である。
【図７】同上、ヒートポンプ給湯暖房装置の風呂追焚き機能運転時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貯湯装置
３ヒートポンプ装置
４暖房装置
５風呂追い焚き装置
６貯湯槽
１０残湯量検知手段としての残湯検知サーミスタ
１２沸上用循環路
１３三方弁
１４水熱交循環ポンプ
１５水熱交換器
１６流量調節器としての切換弁
１７暖房初期循環路
１８第１の分岐路
１９暖房用熱交換器
２０第２の分岐路
２１暖房通常循環路
２２冷媒循環路
２３圧縮機
２４四方弁
２５冷媒用熱交換器
２６膨張弁
２７蒸発器
２８温度センサ
３１暖房用熱媒循環路
３２ａ，３２ｂ放熱部
３４暖房用循環ポンプ
３５戻り水温度センサ
３６浴槽
３７追焚き用熱交換器
３７追焚き用熱交換器
３８追焚き用循環路
３９追焚き用循環ポンプ
４０三方弁
４１風呂湯温検知手段としての風呂湯温検知センサ
４４リモコン
４５制御装置
４６外気温検知手段としの外気温検知センサ[0001]
The present invention relates to a heat pump hot water supply / room heating device using a heat pump device as a heat source.
[0002]
[Prior art]
Conventionally, a single heat pump device operates hot water alone, cooling hot water simultaneous heating, heating hot water simultaneous heating, cooling hot water simultaneous heating, heating hot water simultaneous heating, cooling bath reheating simultaneous heating, heating bath reheating simultaneous operation, cooling independent operation, There is a heat pump hot-water supply / cooling / heating apparatus that can perform seven operation modes of heating only operation (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-5-39957 (pages 8 to 11, FIGS. 2 to 12)
[0004]
[Problems to be solved by the invention]
However, in the conventional heat pump hot water supply / cooling / heating apparatus, the heat pump apparatus is installed outside the room. If the operating capacity of the heat pump device is set to operate at a low output corresponding to the heating only operation without performing the heating operation or the heating only operation without performing the heating operation, in a usage environment with the window opened. Although the noise can be suppressed to a low level, when simultaneous operation of hot water supply and heating is performed, there arises a problem that running out of hot water in the hot water tank or insufficient heating capacity occurs due to insufficient operating capacity. In addition, when the operation capacity of the heat pump device is set to operate at a high output so that the heating and hot water supply simultaneous operation can be performed, when performing the hot water supply independent operation without performing the heating operation or the heating independent operation without performing the hot water supply operation However, there is a problem that it requires more power than necessary, which is uneconomical, and causes noise in an operating environment where a window that does not require a heating operation is opened.
[0005]
The present invention has been made in view of such a point, and uses a heat pump device of a variable operating capacity as a heat source, and when performing a hot water supply alone operation without performing a heating operation, a heat pump having a low output during a heating only operation without performing a hot water supply operation. It is an object of the present invention to provide a heat pump hot water supply apparatus that operates at a maximum capacity during simultaneous operation of heating and hot water supply and that does not run out of hot water while operating the apparatus to suppress noise and reduce power consumption.
[0006]
[Means for Solving the Problems]
The heat pump hot water supply / room heating device according to claim 1, comprising a hot water storage device having a hot water storage tank, a heating device having a radiator, and a heat pump device having a variable operation capacity, wherein the heat pump device is used as a heat source, and the hot water storage device has a hot water storage device. In a heat pump hot water supply and heating system that performs a hot water storage operation that boils hot water in the tank and a heating operation that releases heat from the radiator of the heating device, when the hot water storage operation alone or the heating only operation is performed, the heat pump device is operated with the capacity according to each load. In the hot water storage heating operation in which the hot water storage operation and the heating operation are performed simultaneously, the heat pump device is operated at the maximum capacity that is the sum of the capacity of the hot water storage alone operation and the capacity of the single heating operation.
[0007]
With this configuration, the noise can be reduced and the power consumption can be reduced during single operation of hot water supply without heating operation, and during single operation of heating without hot water supply operation, and power consumption can be reduced. And the risk of running out of hot water is eliminated, and insufficient heating capacity is prevented.
[0008]
The heat pump hot water supply / room heating device according to claim 2 is the heat pump hot water supply / room heating device according to claim 1, wherein the hot water storage tank is provided with remaining hot water amount detection means for detecting the remaining hot water amount in the hot water storage tank, and the remaining hot water amount detection means Is detected to be equal to or less than a predetermined amount, the hot-water storage operation is operated at the maximum capacity of the heat pump device.
[0009]
With this configuration, when the amount of remaining hot water in the hot water storage tank is reduced, the heat pump device is operated at the maximum capacity, so the amount of boiling per unit time increases and the time for boiling is shortened, so that it is possible to quickly respond to running out of hot water. .
[0010]
According to a third aspect of the present invention, there is provided the heat pump hot water supply / room heating apparatus according to the first aspect, further comprising a heat exchanger provided in the hot water storage tank, and circulating the hot water in the bathtub through the circulation path in the heat exchanger. It has a heating function, and operates the hot water storage operation at the maximum capacity of the heat pump device during the reheating operation.
[0011]
With this configuration, when the reheating function of the hot water in the bathtub is operated, the heat pump device is operated at the maximum capacity, so that the amount of boiling per unit time is increased and the time for boiling is shortened, so that it is possible to quickly cope with running out of hot water.
[0012]
The heat pump hot water supply / room heating device according to claim 4 is the heat pump hot water supply / room heating device according to claim 1, further comprising an outside air temperature detection unit, and when the outside air temperature detection unit detects that the outside air temperature is equal to or lower than a predetermined temperature, the hot water storage operation is performed. The heat pump device is operated at the maximum capacity, and when the outside air temperature does not detect the predetermined temperature or less, the heat device is operated at the normal operation capacity.
[0013]
With this configuration, when the outside air temperature detection unit detects that the outside air temperature is equal to or lower than the predetermined temperature, the heat pump device is operated at the maximum capacity, and the amount of water per unit time increases, so that the heat pump device can be heated within the predetermined time. Yes, there is no danger of running out of hot water. Further, when the outside air temperature is not detected below the predetermined temperature, the heat pump device is operated at a normal low output, so that the noise can be suppressed to a low level.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0015]
【Example】
As shown in FIG. 1, the heat pump hot water supply / room heating device 1 includes a hot water storage device 2, a heat pump device 3, a heating device 4, and a bath reheating device 5.
[0016]
The hot water storage device 2 includes a hot water storage tank 6. The hot water storage tank 6 employs a hot water supply method of a first-stop push-up type, and a water supply pipe for supplying tap water through a pressure reducing valve 7 below the hot water storage tank 6. 8 is connected, and a hot water supply pipe 9 for supplying hot water to a hot water supply destination such as a kitchen or a bathtub is connected to an upper portion thereof.
[0017]
Further, on the side surface of the hot water storage tank 6, there is provided a remaining hot water amount detecting means for detecting the temperature of the hot water in the hot water storage tank 6 at a height position corresponding to each remaining hot water amount such as 60 L, 180 L and 430 L in the hot water storage tank 6. A remaining hot water thermistor 10 is provided, and a hot water temperature thermistor 11 for detecting the temperature of the hot water when the whole amount is heated is provided on the bottom side of the hot water storage tank 6.
[0018]
Further, to the hot water storage tank 6, there is connected a boiling circulation path 12 that exits from a lower part of the hot water storage tank 6 and returns to an upper part of the hot water storage tank 6. A three-way valve 13 is provided in the boiling circulation circuit 12 from the lower side of the hot water storage tank 6, and an intermediate portion of the heating circulation circuit 12 exits the hot water storage device 2 and is disposed in the heat pump device 3. A water heat exchange pump 14 and a water heat exchanger 15 for forcibly drawing hot water from the lower part of the hot water storage tank 6 into the boiling circulation path 12 and circulating the hot water in the upper part of the hot water storage tank 6 are provided. A switching valve 16 as a flow controller is disposed between the water heat exchanger 15 and the upper part of the hot water storage tank 6.
[0019]
Further, the heating tank 6 is connected with an initial heating circuit 17 for taking out hot water from the upper part of the hot water tank 6 and circulating the hot water in the lower part of the hot water tank 6. This heating initial circulation path 17 is a first branch path 18, a three-way valve 13, a water heat exchange pump 14, a water heat exchanger 15, a switching valve 16, a heating heat exchanger 19, a second And the lower part of the hot water storage tank 6 are sequentially connected.
[0020]
In addition, a heating normal circulation path 21 for circulating hot water from the lower part of the hot water storage tank 6 to the lower part of the hot water storage tank 6 is connected to the lower part of the hot water storage tank 6. The three-way valve 13, the water heat exchange pump 14, the water heat exchanger 15, the switching valve 16, the heating heat exchanger 19, and the second branch 20 are sequentially connected to the heating normal circulation path 21.
[0021]
The heat pump device 3 has a refrigerant circulation path 22 filled with a refrigerant, and in the refrigerant circulation path 22, a compressor 23 of a variable operating capacity and a flow direction of the refrigerant during the defrosting operation of the evaporator are reversed. A four-way valve 24 to be used, a refrigerant heat exchanger that functions as a condenser and exchanges heat between hot water flowing through the boiling circulation circuit 12 and the water heat exchanger 15 to raise the hot water to a predetermined boiling temperature. 25, an expansion valve 26 and an evaporator 27 as a heat collector are connected in order. Further, the evaporator 27 includes a temperature sensor 28 for detecting the temperature of the evaporator 27 for executing the defrosting operation of the evaporator 27, a blower fan 29 for sending outside air to the evaporator 27, and a rotation of the blower fan 29. A blower motor 30 is provided.
[0022]
The heating device 4 has a heating heat medium circulation path 31 filled with a heat medium. The heating heat medium circulation path 31 includes a heating heat exchanger 19, a radiator 32a such as a floor heater and a panel heater, A radiator 32b, a cistern 33 whose upper part is open to the atmosphere, a circulation pump for heating 34, and a return water temperature sensor 35 are sequentially connected.
[0023]
The bath reheating device 5 connects the bath tank 36 and the heat exchanger 37 for additional heating disposed in the upper part of the hot water storage tank 6, and connects the hot water tank 6 and the heat exchanger 37 for additional heating to connect the hot water storage tank 6. It is constituted by a reheating circuit 38 for circulating and heating the hot water inside. The additional heating circulation path 38 includes an additional heating circulation pump 39, a three-way valve 40, a bath water temperature detection sensor 41 as bath water temperature detection means, and the like. Reference numeral 42 denotes a mixing valve for supplying hot water to the bathtub, which has a function of mixing tap water from the water supply pipe 8 and hot water from the hot water storage tank 6 to supply hot water at an appropriate temperature to the bathtub 36. A hopper 43 has a function of separating the mixing valve 42 and the bathtub 36 when the water supply pressure is reduced due to water cutoff or the like.
[0024]
Reference numeral 44 denotes a remote controller. The remote controller 44 is provided on a wall surface of a kitchen or the like, and operates an operation unit (not shown) for selecting a hot water storage alone operation, a heating alone operation, a hot water storage / heating simultaneous operation, a bath reheating operation, etc. It has display means for displaying the status.
[0025]
Reference numeral 45 denotes a control device as operation control means. The control device 45 operates the remote controller 44 to appropriately switch the three-way valve 13, the switching valve 16, and the three-way valve 40 to circulate the water in the boiling circulation path 12. At the same time, the heat pump device 3 is operated to perform the boiling control of the hot water in the hot water storage tank 6, or to circulate the hot water in the hot water storage tank 6 and circulate the heat medium in the heating medium circulation path 31 to perform the heating operation. The hot water in the bathtub 36 is reheated and heated by operating the recirculating passage 38 for reheating. Reference numeral 46 denotes an outside temperature detection sensor as outside temperature detection means for detecting outside temperature.
[0026]
Next, the operation of the present embodiment will be described.
[0027]
First, the operation of the hot water storage alone operation for boiling water in the hot water storage tank 6 will be described with reference to FIG.
[0028]
Hot water storage operation is mainly performed during the nighttime hours when electricity rates are lower than during the daytime electricity rate hours. That is, tap water is stored in the hot water tank 6 from the water supply pipe 8 via the pressure reducing valve 7. The control device 45 is controlled by operating the remote controller 44, the three-way valve 13 is switched to the boiling circulation path 12 side, and the flow rate control valve 16 is set to the boiling circulation path 12 side so that 100% of hot and cold water is supplied to the boiling circulation path 12 side. Adjusted to flow. Then, the compressor 20 of the heat pump device 3 is driven at an output of, for example, 5.4 KW. Thereby, as indicated by arrows, the refrigerant flows in the order of the compressor 23, the four-way valve 24, the refrigerant heat exchanger 25 functioning as a condenser, the expansion valve 26, and the evaporator 27 of the refrigerant circuit 22. The refrigerant that has collected the atmospheric heat in the evaporator 20 and vaporized is sent to the compressor 23, and the high-temperature and high-pressure refrigerant gas that has been compressed by the compressor 23 and discharged therefrom is supplied to the water heat exchanger 15 by the refrigerant heat exchanger 25. Heat exchange.
[0029]
On the other hand, the boiling circulation pump 14 of the boiling circulation path 12 is driven, and the hot and cold water in the lower part of the hot water storage tank 6 passes through the boiling circulation path 12 side as shown by arrows, and the water heat exchanger 15 and the refrigerant heat exchanger 25 are turned on. The hot water in the boiling circulation path 12 is subjected to heat exchange between the hot water and the hot water, and the hot water enters the upper portion of the hot water storage tank 6. The hot water in the hot water storage tank 6 is boiled, and the boiling is repeatedly performed until the hot water temperature thermistor 11 detects that the whole amount is heated. The hot and cold water stacked in the hot water storage tank 6 is sent to a kitchen or a bathtub through the hot water supply pipe 9 to be supplied with hot water, or heat is applied to the heating circulation path 31 to be used for a heating operation or the like.
[0030]
Next, the operation of the early stage of the heating operation in the morning will be described with reference to FIG.
[0031]
The initial operation of the heating operation in the morning requires a rising speed of the heating operation, and therefore, the heat of the boiled hot water in the upper part of the hot water storage tank 6 is used. That is, when the heating operation is selected by the operation of the remote controller 44, the control device 45 is controlled, the three-way valve 13 is switched to the first branch 18, and the switching valve 16 is moved to the second branch 20. % Of hot and cold water is adjusted to form a heating initial circulation path 17. Next, the water heat exchange pump 14 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 tank 6 is supplied from the upper part of the hot water tank 6 to the three-way valve 113 and the water heat exchanger. The water is circulated to the lower part of the hot water storage tank 6 through the switching valve 16 and the heat exchanger 19 for heating.
[0032]
On the other hand, the heating circulation pump 34 of the heating device 4 is driven to circulate the heat medium flowing in the heating heat medium circulation path 31. Then, the heat of the hot / cold water of about 80 ° C. circulating in the heating initial circulation path 17 is immediately exchanged by the heating heat exchanger 19 and dispersed and radiated from the radiators 32 a and 32 b to perform the initial heating operation. Is Further, the hot water in the heating initial circulation path 17 that has been cooled down to about 70 ° C. by heat exchange in the heating heat exchanger 19 is returned to the lower part of the hot water tank 6 without being mixed with the hot water in the upper part of the hot water tank 6. The heating operation through the heating initial circulation path 17 is repeated, for example, for about 50 minutes.
[0033]
Next, the operation at the time of the single heating operation without using the heat pump device 3 will be described with reference to FIG.
[0034]
After about 50 minutes of the heating operation via the heating initial circulation path 17 has elapsed, the control unit 44 switches to the single heating operation via the heating normal circulation path 21 without using the heat pump device 3. That is, under the control of the control device 45, the three-way valve 13 is switched to the water heat exchanger 15 side, and the switching valve 16 is switched so that 100% of the hot water flows to the second branch passage 20 side. A heating normal circulation path 21 is formed that returns from the lower part of the hot water tank 6 to the lower part of the hot water storage tank 6 through the three-way valve 13, the water heat exchanger 15, the switching valve 16, the heating heat exchanger 19, and the second branch path 20. Then, the water heat exchange pump 14 is driven and the circulation of the hot water in the lower part of the hot water tank 6 from the lower part of the hot water tank 6 to the lower part of the hot water tank 6 is repeated through the heating normal circulation path 21.
[0035]
On the other hand, as in the heating initial operation, the heat of the hot water flowing in the heating normal circulation path 21 is exchanged with the heat medium flowing in the heating circulation path 31 via the heating heat exchanger 19, and the radiator 32a, The normal heating operation in which the heat is radiated from 32b and drives the circulation pump for heating 34 is continued. This normal heating operation is repeatedly performed until the detected temperature of the return water temperature sensor 35 provided on the return side of the heating circulation path 31 detects a predetermined temperature or less. Therefore, 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 6 is performed without operating the heat pump device 3, and the energy can be effectively used.
[0036]
Next, with reference to FIG. 5, the operation during the heating heat pump operation using the heat pump device in the morning and thereafter will be described.
[0037]
When the heating operation through the heating normal circulation path 17 is repeatedly performed, the temperature of the hot and cold water exchanged by the heating heat exchanger 19 gradually decreases. As a result, the temperature of the heat medium flowing in the heating circulation path 31 gradually increases. And the detection temperature of the return water temperature detection sensor 35 provided on the return side of the heating heat medium circulation path 31 is detected to be equal to or lower than a predetermined temperature. Then, when the detected temperature of the return water temperature detection sensor 35 detects a predetermined temperature or lower, the control device 45 controls the operation of the heat pump device 3. The operation of the heat pump device 3 is performed with an output of, for example, 1.6 KW while suppressing noise. The hot water in the normal heating circuit 17 is reheated by the refrigerant heat exchanger 25 via the water heat exchanger 15, and the heat pump The heating operation by the operation of the device 3 is performed.
[0038]
Next, the operation during the simultaneous operation of hot water storage and heating will be described with reference to FIG.
[0039]
In the simultaneous operation of storing hot water and heating, the heating operation is performed while storing hot water mainly in the nighttime period when the electricity rate is low. That is, the simultaneous operation of hot water storage and heating is selected from the remote controller 44, the three-way valve 13 is switched to the water heat exchanger 15 side by the control of the control device 45, and the switching valve 16 is connected to the heating normal circulation path 21 and the boiling circulation. It is adjusted so that the boiling water flows on both sides of the road 12 side.
[0040]
Then, the compressor 23 of the heat pump device 3 is driven by an output having a maximum operating capacity of 7.0 KW, for example, which is obtained by adding 5.4 KW of the output of the hot-water supply independent operation and 1.6 KW of the output of the heating alone operation. As a result, the refrigerant circulates in the refrigerant circuit 22 in the same manner as in the hot water supply alone operation, and the refrigerant that has collected the atmospheric heat in the evaporator 20 and is vaporized is sent to the compressor 23, The high-pressure refrigerant gas exchanges heat with the water heat exchanger 15 in the refrigerant heat exchanger 25.
[0041]
On the other hand, the boiling circulation pump 14 of the boiling circulation circuit 12 is driven, and the hot and cold water flowing out from the lower part of the hot water storage tank 6 is supplied to the three-way valve 13, the water heat exchange circulation pump 14, and the water heat exchanger 15 as shown by arrows. The hot water in the boiling circulation circuit 12 is heat-exchanged between the water heat exchanger 15 and the refrigerant heat exchanger 25 to become hot water. The hot water is divided by the switching valve 16 and a part of the hot water is transferred to the hot water storage tank 6. The water enters the upper portion, and this is repeated, and hot water at a set temperature of about 80 ° C. is sequentially stacked from the upper portion of the hot water storage tank 6, and the hot water in the hot water storage tank 6 is boiled.
[0042]
Another part of the hot and cold water diverted by the switching valve 16 flows to the heating normal circulation path 17. Then, the heating circulation pump 34 is driven, and the heat medium in the heating circulation path 31 circulates in the heating circulation path 31, and the heat medium is exchanged and heated by the heating heat exchanger 19 to be heated and radiated by the radiators 32a, 32b. The heat is dissipated and used for heating.
[0043]
Therefore, during the simultaneous operation of hot water storage and heating, the heat pump device is operated at the maximum operation capacity, so that the hot water in the hot water storage tank 6 does not run out and the heating capacity does not become insufficient.
[0044]
Next, the operation of the hot water storage operation when the remaining hot water amount decreases will be described.
[0045]
If a large amount of hot water is used by a visitor or the like, the amount of remaining hot water decreases, and there is a risk of running out of hot water.
In such a case, for example, the remaining hot-water thermistor 10 corresponding to the remaining hot-water amount of 60 L detects the remaining hot-water amount and detects the possibility of running out of hot water. The detection signal forms the boiling circulation path 12 as shown in FIG. 2 and controls the heat pump device 3 to operate at an output of the maximum operation capacity of 7.0 KW. Thereby, the water in the hot water storage tank 6 can be quickly heated by increasing the amount of boiling water per unit time, and there is no danger of running out of hot water.
[0046]
Next, an operation at the time of bath reheating function operation will be described with reference to FIG.
[0047]
The temperature of the hot and cold water in the bathtub 36 is checked at regular intervals, and an automatic warming operation for keeping the hot water temperature constant is performed. That is, the three-way valve 40 is switched to the additional heating circulation path 38, and the additional heating circulation pump 39 is driven at regular intervals to circulate the hot water in the bathtub 36 into the additional heating circulation path 38, thereby making the bath hot water temperature sensor 41 To monitor hot water temperature. When the bath temperature detection sensor 41 detects a temperature below the predetermined temperature, the reheating pump 40 is driven until the temperature reaches the predetermined temperature, and the heat exchanger for reheating the water in the bathtub 36 as indicated by an arrow. Circulate through 37. Then, the heat of the hot water in the hot water storage tank 6 and the hot water in the bath tub 36 are exchanged with each other, so that the hot water is heated in the bath. Thereby, the hot and cold water in the hot water storage tank 6 is radiated and lowered through the heat exchanger 37 for additional heating.
[0048]
On the other hand, when the bath reheating is performed, the boiling circulation path 12 is formed as shown in FIG. 2, and the heat pump device 3 is controlled so as to be operated at an output of the maximum operation capacity of 7.0 KW. As a result, the amount of boiling water per unit time is increased, and the boiling time is shortened.
[0049]
Next, the operation when the outside air temperature is lowered will be described.
[0050]
When the outside air temperature decreases as in winter, the water temperature decreases. In such a low water temperature state, for example, when a hot water storage operation is performed, the time for boiling water in the hot water storage tank 6 becomes longer, and a predetermined amount of hot water can be heated during a time period when nighttime electricity is used at a low rate. Is uneconomical.
[0051]
When the outside air temperature is low, the outside air temperature detection means 46 detects a decrease in the outside air temperature and the boiling circulation path 12 is formed as shown in FIG. It is controlled to operate at an output of 0.0 KW. Thus, the amount of water per unit time can be increased, and the water in the hot water storage tank 6 can be heated within a predetermined time, which is economical and eliminates the risk of running out of hot water.
[0052]
【The invention's effect】
According to the heat pump hot water supply / room heating device of the first aspect, the noise can be suppressed low and the power consumption can be reduced during the hot water supply alone operation without performing the heating operation and the heating alone operation without performing the hot water supply operation, and the simultaneous heating and hot water supply operation can be performed. The hot water supply and heating operation can be performed at the maximum capacity to prevent running out of hot water and insufficient heating capacity.
[0053]
According to the heat pump hot water supply and heating device of the second aspect, when the remaining hot water amount in the hot water storage tank decreases, the heat pump device is operated at the maximum capacity, so that the amount of boiling per unit time increases and the time for boiling increases. It can respond quickly to running out of hot water.
[0054]
According to the heat pump hot water supply / room heating device according to the third aspect, when the reheating function of hot water in the bathtub operates, the heat pump device is operated at the maximum capacity, so that the amount of boiling per unit time increases and the time for boiling increases. Quick response to running out of hot water.
[0055]
According to the heat pump hot water supply / room heating device of the fourth aspect, when the outside air temperature detecting means detects the outside air temperature below a predetermined temperature, the heat pump device is operated at the maximum capacity and the amount of boiling per unit time increases, so that the predetermined amount is increased. It can be boiled in time and there is no danger of running out of hot water. Further, when the outside air temperature is not detected below the predetermined temperature, the heat pump device is operated at a normal low output, so that the noise can be suppressed to a low level.
[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 during a hot water storage operation;
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 for explaining an operation of a heating operation by the heat pump device of the heat pump hot water supply / room heating device.
FIG. 6 is an explanatory view illustrating an operation of the heat pump hot water supply / room heating device during simultaneous operation of hot water storage operation and heating operation.
FIG. 7 is an explanatory diagram illustrating an operation of the heat pump hot water supply / room heating device during a bath reheating function.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 heat pump hot water supply / heating device 2 hot water storage device 3 heat pump device 4 heating device 5 bath reheating device 6 hot water storage tank 10 remaining hot water detection thermistor as remaining hot water amount detection means 12 boiling circuit 13 three-way valve 14 water heat exchange circulation pump 15 water Heat exchanger 16 Switching valve 17 as flow controller 17 Heating initial circulation path 18 First branch path 19 Heating heat exchanger 20 Second branch path 21 Heating normal circulation path 22 Refrigerant circulation path 23 Compressor 24 Four-way valve 25 Refrigerant heat exchanger 26 Expansion valve 27 Evaporator 28 Temperature sensor 31 Heating medium circulation paths 32a, 32b Heat radiating section 34 Heating circulation pump 35 Return water temperature sensor 36 Bathtub 37 Additional heating heat exchanger 37 Additional heating Exchanger 38 Additional heating circulation path 39 Additional heating circulation pump 40 Three-way valve 41 Bath water temperature detection sensor 44 as bath water temperature detection means 44 Remote controller 45 Controller 46 Outside temperature detection sensor as outside temperature detection means

Claims

A hot-water storage device having a hot-water storage tank, a heating device having a radiator, and a variable-capacity heat pump device, and using this heat pump device as a heat source, a hot-water storage operation for boiling hot water in the hot-water storage tank of the hot-water storage device, In a heat pump hot-water supply / room heating device that performs a heating operation to radiate heat from a radiator of a heating device, in a hot water storage alone operation or a heating alone operation, the heat pon device is operated with a capacity corresponding to each load, and the hot water storage operation and the heating operation are simultaneously performed. A heat pump hot-water supply / room heating device characterized in that the heat pump device is operated at the maximum capacity in the hot water storage / heating operation, which is the sum of the capacity of the hot water storage alone operation and the capacity of the single heating operation.

The hot water storage tank is provided with remaining hot water amount detection means for detecting the remaining hot water amount in the hot water storage tank, and when the remaining hot water amount detection means detects that the remaining hot water amount is equal to or less than a predetermined amount, the hot water storage operation is performed at the maximum capacity of the heat pump device. The heat pump hot water supply / room heating device according to claim 1, wherein the heat pump hot water supply / room heating device is operated.

A heat exchanger is provided in the hot water storage tank, and the heat exchanger has a reheating function for circulating hot water in the bathtub through a circulation path. The heat pump hot-water supply / room heating device according to claim 1, wherein the heat pump hot-water supply / room heating device is operated.

An outside air temperature detecting means is provided, and when the outside air temperature is detected by the outside air temperature detecting means to be lower than a predetermined temperature, the hot water storage operation is operated at the maximum capacity of the heat pump device, and when the outside air temperature is not detected to be lower than the predetermined temperature, 2. The heat pump hot water supply / room heating device according to claim 1, wherein the heat pump device is operated at a normal operation capacity.