JP3890280B2

JP3890280B2 - Hot water heater / heater / bath heater / hot water bath / heater

Info

Publication number: JP3890280B2
Application number: JP2002276493A
Authority: JP
Inventors: 明和高橋; 茂雄近藤
Original assignee: Corona Corp
Current assignee: Corona Corp
Priority date: 2002-09-24
Filing date: 2002-09-24
Publication date: 2007-03-07
Anticipated expiration: 2022-09-24
Also published as: JP2004116791A

Description

【０００１】
【発明の属する技術分野】
この発明は１つの缶体で、給湯、暖房、或いは風呂、暖房の少なくとも２回路を有する給湯暖房装置或いは風呂暖房装置、又は給湯、風呂、暖房の３回路を有する給湯風呂暖房装置に関するものである。
【０００２】
【従来の技術】
従来の給湯暖房装置では、暖房用の熱媒体が貯溜された缶体内に、給湯用熱交換器や風呂用熱交換器を備え、暖房、給湯、風呂の追い炊きや保温をそれぞれ良好に行うものであった。（例えば、特許文献１参照。）
【０００３】
【特許文献１】
特開２００１−６５８８４号公報
【０００４】
【発明が解決しようとする課題】
ところでこの従来のものでは、暖房の負荷が高い状態で、暖房と給湯、暖房と風呂或いは暖房と給湯、風呂の同時使用時には、それぞれの希望する設定温度にもよるが、バ−ナの加熱能力の限界によって、設定温度の暖房、給湯、風呂が得られないと言う問題点を有するものであった。
【０００５】
【課題を解決するための手段】
この発明は、この点に着目し上記欠点を解決する為、特にその構成を請求項１では、下部に加熱用のバーナ部を備え且つ暖房用放熱器と暖房用循環ポンプを有した暖房回路で連通された暖房用缶体内に、市水道と連通し給湯を行うための間接加熱式の給湯用熱交を備えたものに於いて、前記暖房と給湯の同時使用時に、暖房缶体内湯温と給湯設定温度との差が所定温度以上高くない場合には暖房用循環ポンプを停止させるようにした。
【０００６】
この構成により、暖房と給湯の同時使用時に、缶体温度センサで暖房用缶体内湯温を検出し、この検出温度と給湯設定温度とを比較して、暖房用缶体内湯温が給湯設定温度より２０度以上高いかを判断し、高い時にはそのまま暖房と給湯動作を継続させ、高くない時には能力不足であるとして、暖房用循環ポンプの駆動を停止させることで、一時的な使用である給湯動作を優先させ設定温度の給湯を行い、使用者に不安感を与えないものであり、又暖房は一次中断されるが、中断で暖房用缶体内湯温が上昇し２０℃以上の差が生じれば再び再開されるものである。
従って、能力不足が発生した時には、直ぐに変化を感じることがなく、一旦部屋が暖まっていれば緊急度が一番少ない暖房を一旦停止して、直ぐに必要とされている給湯を、常に設定温度で供給することが出来るので、使用勝手が良く安心して使用出来るものである。
【０００７】
又請求項２では、下部に加熱用のバーナ部を備え且つ暖房用放熱器と暖房用循環ポンプを有した暖房回路で連通された暖房用缶体内に、浴槽と循環回路を介して連通し浴槽内の湯または水を加熱する間接加熱式の風呂用熱交を備えたものに於いて、前記暖房と風呂の同時使用時に、暖房缶体内湯温と風呂設定温度との差が所定温度以上高くない場合には暖房用循環ポンプを停止させるようにした。
【０００８】
これによれば、暖房と風呂の追い焚きや保温の同時使用時に、缶体温度センサで暖房用缶体内湯温を検出し、この検出温度と風呂設定温度とを比較して、暖房用缶体内湯温が風呂設定温度より２０度以上高いかを判断し、高い時にはそのまま暖房と風呂動作を継続させ、高くない時には能力不足であるとして、暖房用循環ポンプの駆動を停止させることで、一時的な使用である風呂動作を優先させ設定温度の追い焚きや保温を行い、使用者に不安感を与えないものであり、又暖房は一次中断されるが、中断で暖房用缶体内湯温が上昇し２０℃以上の差が生じれば再び再開されるものである。
従って、能力不足が発生した時には、直ぐに変化を感じることがなく、一旦部屋が暖まっていれば緊急度が一番少ない暖房を一旦停止して、直ぐに必要とされている風呂を、常に設定温度で沸き上げることが出来るので、使用勝手が良く安心して使用出来るものである。
【０００９】
又請求項３では、下部に加熱用のバーナ部を備え且つ暖房用放熱器と暖房用循環ポンプを有した暖房回路で連通された暖房用缶体内に、市水道と連通し給湯を行うための間接加熱式の給湯用熱交と、浴槽と循環回路を介して連通し浴槽内の湯または水を加熱する間接加熱式の風呂用熱交とを備えたものに於いて、前記暖房と給湯及び風呂の同時使用時に、暖房缶体内湯温と給湯設定温度と風呂設定温度の高い方の温度との差が所定温度以上高くない場合には暖房用循環ポンプを停止させるようにした。
【００１０】
これによれば、暖房と給湯及び風呂の追い焚きや保温の三者の同時使用時に、缶体温度センサで暖房用缶体内湯温を検出し、この検出温度と給湯設定温度及び風呂設定温度のうち高い温度の方と比較して、暖房用缶体内湯温がこの高い方の設定温度より２０度以上高いかを判断し、高い時にはそのまま暖房と給湯と風呂動作を継続させ、高くない時には能力不足であるとして、暖房用循環ポンプの駆動を停止させることで、一時的な使用である給湯と風呂動作を優先させ設定温度の給湯及び風呂の追い焚きや保温を行い、使用者に不安感を与えないものであり、又暖房は一次中断されるが、中断で暖房用缶体内湯温が上昇し２０℃以上の差が生じれば再び再開されるものである。
従って、能力不足が発生した時には、直ぐに変化を感じることがなく、一旦部屋が暖まっていれば緊急度が一番少ない暖房を一旦停止して、直ぐに必要とされている給湯と風呂を、高い方の温度を基準とすれば常に設定温度で給湯及び風呂を沸き上げることが出来るので、使用勝手が良く安心して使用出来るものである。
【００１１】
【発明の実施の形態】
次にこの発明に係る１缶３回路式の給湯暖房風呂装置を図面に示された一実施形態で説明する。
１は下部に加熱用のバーナ部２を備える燃焼室３を形成した暖房用缶体で、この缶体１内方には蛇管による間接加熱式の給湯用の熱交換器を構成する給湯用熱交４と、蛇管による間接加熱式の風呂焚き用の熱交換器を構成する風呂用熱交５とを上下に配設し、温水暖房を行うと共に給湯及び風呂焚きを同時またはそれぞれ単独でも行えるようにしたものである。
【００１２】
先ず、暖房回路Ａについて説明すると、６は暖房往き管、７は例えば床暖房パネル等の暖房用放熱器、８は暖房戻り管、９は暖房用循環ポンプ、１０は気液分離器、１１は暖房用膨張タンク、１２は開閉弁１３が設けられた暖房バイパス管、１４は暖房用缶体１の温度制御に用いる缶体温度センサで、暖房用缶体１にてバーナ部２の燃焼で缶体温度センサ１４の制御目標温度（８８℃以上）まで加熱された熱媒体が、暖房用循環ポンプ９により暖房往き管６を介して暖房用放熱器７に送られて暖房を行い、暖房用放熱器７で放熱した低温水（約３０℃〜５０℃程度）が暖房戻り管８を介して暖房用缶体１に戻り再度制御目標温度まで加熱されて循環するものである。
【００１３】
次に給湯回路Ｂについて説明すると、１５は水道に接続された給水管、１６は水の流量を検知する流量センサ、１７は給湯用熱交４で加熱された温水を出湯する給湯管、１８は給湯栓、１９はミキシング弁２０を介して給湯管１７に接続され給水管１５と給湯管１７とを連通する給湯バイパス管、２１は給湯栓１８の閉止時の熱膨張を吸収する給湯用膨張タンク、２２は給水温度センサ、２３は給湯温度センサで、給湯栓１８が開かれて流量センサ１６が最低作動流量を検知すると、暖房用缶体１内の熱媒体の温度を約８８℃程度の高温に維持するようバーナ部２で燃焼を行い、給水管１５からの冷水が給湯用熱交４で暖房用缶体１内の高温の熱媒体により間接加熱され、ミキシング弁２０で水道水と混合され適温に調節されて給湯栓１８から給湯されるものである。
【００１４】
次に風呂回路Ｃについて説明すると、２４は風呂浴槽、２５は風呂往き管、２６は風呂戻り管、２７は戻り管２６に設けられた風呂循環ポンプ、２８は循環の有無を検知する流水スイッチ、２９は風呂温度センサで、浴槽２４内の湯の沸かし上げ要求があると、浴槽２４内の湯を風呂循環ポンプ２７で風呂用熱交５に循環させ、浴槽２４内の湯が暖房用缶体１内の高温の熱媒体により間接加熱されることで浴槽２４内の湯を適温まで沸かし上げたり保温したりするものである。
【００１５】
そして、３０は給湯回路Ｂの給湯管１７から分岐されて風呂回路Ｃに湯張り弁３１及び三方弁３２を介して接続される湯張り管で、風呂の湯張り要求があると三方弁３２を風呂回路Ｃと湯張り管３０とを連通するよう切り換えると共に湯張り弁３１を開弁し、給湯用熱交４で加熱された湯を風呂回路Ｃ内に流入させて風呂浴槽２４への一定量の湯張りを行うものである。
【００１６】
ここで、３３は暖房用缶体１の上下部を結ぶ連通パイプ、３４はこの連通パイプ３３途中に備えられた撹拌用循環ポンプで、給湯時または風呂運転時に駆動して、暖房用缶体１内の温度を上下均一化させるもので、給湯または風呂運転が終了するまで継続駆動して撹拌を行うものである。尚、暖房運転時は暖房用循環ポンプ９が駆動されているため、撹拌用循環ポンプ３４は駆動しないようにすることも可能である。
【００１７】
次に本発明の一実施形態の作動について説明する。
先ず、暖房運転を説明すれば、缶体温度センサ１４が暖房用缶体１内の湯温を検知し、この温度が約８８℃以上になるようにバーナ部２の燃焼を制御すると共に、暖房用循環ポンプ９を駆動して暖房用缶体１内の高温となった温水や循環液や不凍液等の熱媒体を暖房用放熱器７に流通し、再び暖房用缶体１に戻す循環を繰り返して、暖房用放熱器７によって室内の暖房を行うものである。
【００１８】
又給湯運転は、暖房用缶体１内が高温となっている状態で、給湯栓１８が開かれれば給水管１５からの低温の水は直ぐに給湯用熱交４で暖房用缶体１内の高温の熱媒体により間接加熱されると同時に、撹拌用循環ポンプ３４を駆動し連通パイプ３３を介して缶体１の下部にある湯を缶体１上部に供給して暖房用缶体１の撹拌を行い暖房用缶体１内の上と下の温度差をなくし、常に同一の熱交換効率で熱交換できるようにして所望の温度の湯が供給されるものである。
【００１９】
更に風呂運転は、図示しないリモコンの風呂保温スイッチをＯＮした等の浴槽２４内の湯の沸かし上げ要求があると、風呂用循環ポンプ２７を駆動して浴槽２４内の湯を風呂用熱交５に循環させて、高温に保持された暖房用缶体１内の熱媒体で加熱して浴槽２４内の湯を所望の温度に追い焚きしたり保温したりするもので、風呂温度センサ２９が所望の温度を検知すると自動的に停止されるものである。
【００２０】
次に暖房と給湯の同時使用では、図２に示すフロ−チャ−トで説明すれば、各運転スイッチ（図示せず）の押圧で暖房と給湯の同時使用を判断し（ステップ３５）、ＹＥＳでステップ３６に進み流量センサ１６による出湯中かの判断を行う。
そして、出湯中でＹＥＳではステップ３７に進み、缶体温度センサ１４により検出された現在の缶体温度Ｔａから給湯設定温度Ｔｂを減算し、残りが所定温度Ｔｃである２０℃より高いか否かを判断して、高い時にはＮＯで再びこのステップ３７を繰り返し、高くない時には能力不足と言うことでステップ３８に進んで暖房用循環ポンプ９の駆動を停止させ、暖房を中断して給湯を優先させる。
【００２１】
ここで所定温度Ｔｃを２０℃としたのは、缶体温度Ｔａと給湯設定温度Ｔｂとの間に２０℃以上の温度差がないと、実験の結果で、この実施例構造の間接加熱では設定の給湯温度を得ることが出来ないからであり、給湯用熱交４の巻き数の変更やバ−ナ部２の能力変更で変化するものである。
【００２２】
更にステップ３８の次にはステップ３９に進み、再び缶体温度Ｔａと給湯設定温度Ｔｂとを比較して、暖房を中断した事で缶体温度Ｔａが上昇し給湯設定温度Ｔｂとの差が所定温度Ｔｃの２０℃より高く成ったかを見て、高くなった時にはＮＯでステップ４０に進んで、暖房用循環ポンプ９の駆動を開始させて暖房を再開させるものであり、又まだ大きな温度上昇がなく高くなっていない時には、ＹＥＳでステップ４１に進み出湯継続中かを判断し、給湯が停止しているのであれば、ＮＯでステップ４０に進み暖房を再開させるものであり、逆に給湯中ではＹＥＳでステップ３５に戻るものである。
【００２３】
次にステップ３５で暖房と給湯の同時使用でない時は、ＮＯでステップ４２に進んで通常の運転が行われるものであり、又ステップ３６で給湯が開始されていない時には、ＮＯでステップ４３に進んで通常の暖房運転が行われるものである。
従って、暖房と給湯の同時使用では、給湯を優先として確実に設定温度の給湯を提供して、一時的な使用である給湯が確実に行われて、極めて使用勝手がよいものである。
【００２４】
次に暖房と風呂の同時使用では、図３に示すフロ−チャ−トで説明すれば、各運転スイッチ（図示せず）の押圧で暖房と風呂の同時使用を判断し（ステップ４４）、ＹＥＳでステップ４５に進み風呂循環中かの判断を行う。
そして、循環中でＹＥＳではステップ４６に進み、缶体温度センサ１４により検出された現在の缶体温度Ｔａから風呂設定温度Ｔｄを減算し、残りが所定温度Ｔｃである２０℃より高いか否かを判断して、高い時にはＮＯで再びこのステップ４６を繰り返し、高くない時には能力不足と言うことでステップ４７に進んで暖房用循環ポンプ９の駆動を停止させ、暖房を中断して風呂運転を優先させる。
【００２５】
更にステップ４７の次にはステップ４８に進み、再び缶体温度Ｔａと風呂設定温度Ｔｄとを比較して、暖房を中断した事で缶体温度Ｔａが上昇し風呂設定温度Ｔｄとの差が所定温度Ｔｃの２０℃より高く成ったかを見て、高くなった時にはＮＯでステップ４９に進んで、暖房用循環ポンプ９の駆動を開始させて暖房を再開させるものであり、又まだ大きな温度上昇がなく高くなっていない時には、ＹＥＳでステップ５０に進み循環継続中かを判断し、風呂が停止しているのであれば、ＮＯでステップ４９に進み暖房を再開させるものであり、逆に給湯中ではＹＥＳでステップ４４に戻るものである。
【００２６】
次にステップ４４で暖房と風呂の同時使用でない時は、ＮＯでステップ５１に進んで通常の運転が行われるものであり、又ステップ４５で給湯が開始されていない時には、ＮＯでステップ５２に進んで通常の暖房運転が行われるものである。
従って、暖房と風呂の同時使用では、風呂運転を優先として確実に設定温度の風呂運転を提供して、一時的な使用である風呂運転が確実に行われて、極めて使用勝手がよいものである。
【００２７】
次に暖房と給湯及び風呂の三者同時使用では、図４に示すフロ−チャ−トで説明すれば、各運転スイッチ（図示せず）の押圧で暖房と給湯及び風呂の同時使用を判断し（ステップ５３）、ＹＥＳでステップ５４に進み出湯中で風呂循環中かの判断を行う。
そして、出湯中で循環中のＹＥＳではステップ５５に進み、缶体温度センサ１４により検出された現在の缶体温度Ｔａから給湯設定温度Ｔｂと風呂設定温度Ｔｄの高い設定の方を減算し、残りが所定温度Ｔｃである２０℃より高いか否かを判断して、高い時にはＮＯで再びこのステップ５５を繰り返し、高くない時には能力不足と言うことでステップ５６に進んで暖房用循環ポンプ９の駆動を停止させ、暖房を中断して給湯及び風呂運転を優先させる。
【００２８】
更にステップ５６の次にはステップ５７に進み、再び缶体温度Ｔａと給湯設定温度Ｔｂと風呂設定温度Ｔｄの高い設定の方とを比較して、暖房を中断した事で缶体温度Ｔａが上昇し高い設定温度との差が所定温度Ｔｃの２０℃より高く成ったかを見て、高くなった時にはＮＯでステップ５８に進んで、暖房用循環ポンプ９の駆動を開始させて暖房を再開させるものであり、又まだ大きな温度上昇がなく高くなっていない時には、ＹＥＳでステップ５９に進み出湯中で循環継続中かを判断し、給湯及び風呂が停止しているのであれば、ＮＯでステップ５８に進み暖房を再開させるものであり、逆に給湯中ではＹＥＳでステップ５３に戻るものである。
【００２９】
次にステップ５３で暖房と風呂の同時使用でない時は、ＮＯでステップ６０に進んで通常の運転が行われるものであり、又ステップ５４で給湯及び風呂運転が開始されていない時には、ＮＯでステップ６１に進んで通常の暖房運転が行われるものである。
従って、暖房と給湯及び風呂運転の三者同時使用では、給湯及び風呂運転を優先として確実に設定温度の給湯及び風呂運転を提供して、一時的な使用である給湯及び風呂運転が確実に行われて、極めて使用勝手がよいものである。
【００３０】
【発明の効果】
以上のようにこの発明の請求項１によれば、暖房と給湯の同時使用時に、暖房用缶体内湯温を検出し、この検出温度と給湯設定温度とを比較して、高い時にはそのまま暖房と給湯動作を継続させ、高くない時には能力不足であるとして、暖房用循環ポンプの駆動を停止させることで、一時的な使用である給湯動作を優先させ設定温度の給湯を行い、使用者に不安感を与えないものであり、能力不足が発生した時には、直ぐに変化を感じることがなく、一旦部屋が暖まっていれば緊急度が一番少ない暖房を一旦停止して、直ぐに必要とされている給湯を、常に設定温度で供給することが出来るので、使用勝手が良く安心して使用出来るものである。
【００３１】
又請求項２の構成では、暖房と風呂の追い焚きや保温の同時使用時に、暖房用缶体内湯温を検出し、この検出温度と風呂設定温度とを比較して、高い時にはそのまま暖房と風呂動作を継続させ、高くない時には能力不足であるとして、暖房用循環ポンプの駆動を停止させることで、一時的な使用である風呂動作を優先させ設定温度の追い焚きや保温を行い、使用者に不安感を与えないものであり、能力不足が発生した時には、直ぐに変化を感じることがなく、一旦部屋が暖まっていれば緊急度が一番少ない暖房を一旦停止して、直ぐに必要とされている風呂を、常に設定温度で沸き上げることが出来るので、使用勝手が良く安心して使用出来るものである。
【００３２】
又請求項３の構成では、暖房と給湯及び風呂の追い焚きや保温の三者の同時使用時に、暖房用缶体内湯温を検出し、この検出温度と給湯設定温度及び風呂設定温度のうち高い温度の方と比較して、高い時にはそのまま暖房と給湯と風呂動作を継続させ、高くない時には能力不足であるとして、暖房用循環ポンプの駆動を停止させることで、一時的な使用である給湯と風呂動作を優先させ設定温度の給湯及び風呂の追い焚きや保温を行い、使用者に不安感を与えないものであり、能力不足が発生した時には、直ぐに変化を感じることがなく、一旦部屋が暖まっていれば緊急度が一番少ない暖房を一旦停止して、直ぐに必要とされている給湯と風呂を、高い方の温度を基準とすれば常に設定温度で給湯及び風呂を沸き上げることが出来るので、使用勝手が良く安心して使用出来るものである。
【図面の簡単な説明】
【図１】この発明の一実施形態を付した１缶３回路式給湯暖房風呂装置の概略構成図。
【図２】同暖房と給湯の同時使用時のフロ−チャ−ト。
【図３】同暖房と風呂運転の同時使用時のフロ−チャ−ト。
【図４】同暖房と給湯及び風呂の三者同時使用時のフロ−チャ−ト。
【符号の説明】
１暖房用缶体
２バーナ部
４給湯用熱交
５風呂用熱交
７暖房用放熱器
９暖房用循環ポンプ
Ａ暖房回路
Ｂ給湯回路
Ｃ風呂回路
Ｔａ缶体温度
Ｔｂ給湯設定温度
Ｔｃ所定温度
Ｔｄ風呂設定温度[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hot water heater / bath heater having at least two circuits of hot water supply, heating, bath, and heating, or a hot water bath heater having three circuits of hot water, bath, and heating. .
[0002]
[Prior art]
Conventional hot water heaters are equipped with a hot water heat exchanger and a bath heat exchanger in the can where the heat medium for heating is stored, and perform heating, hot water, bathing and warming well, respectively. Met. (For example, refer to Patent Document 1.)
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-65884
[Problems to be solved by the invention]
By the way, in this conventional type, when the heating load is high, heating and hot water supply, heating and bath or heating and hot water supply, and simultaneous use of the bath, depending on each desired set temperature, the heating capacity of the burner Due to this limitation, there is a problem that heating at a set temperature, hot water supply, and bath cannot be obtained.
[0005]
[Means for Solving the Problems]
This invention pays attention to this point and solves the above-mentioned drawbacks. In particular, in the first aspect of the present invention, a heating circuit having a heating burner portion at the lower portion and a heating radiator and a heating circulation pump is provided. In a heating can that is in communication with an indirect heating type hot water supply for communicating with the city water supply, when the heating and hot water are used at the same time, When the difference from the hot water supply set temperature is not higher than the predetermined temperature, the heating circulation pump is stopped.
[0006]
With this configuration, when using heating and hot water at the same time, the can body temperature sensor detects the temperature of the hot water in the heating can, and compares the detected temperature with the hot water supply set temperature. When it is higher, the heating and hot water supply operation is continued as it is, and when it is not higher, it is assumed that the capacity is insufficient, and the heating circulation pump is stopped, so that the hot water supply operation is temporarily used. Priority is given to the hot water supply at the set temperature, which does not give the user a sense of insecurity. Heating is temporarily interrupted, but the hot water temperature in the heating can rises due to the interruption, resulting in a difference of 20 ° C or more. Will resume again.
Therefore, when there is a shortage of capacity, there is no immediate change. Once the room is warmed up, the heating with the least urgency is temporarily stopped, and the hot water supply that is needed immediately is always kept at the set temperature. Since it can be supplied, it is easy to use and can be used with confidence.
[0007]
Further, according to the second aspect, a heating bathtub having a heating burner portion at a lower portion and communicating with a heating circuit having a heating radiator and a heating circulation pump is communicated with the bathtub through the bathtub and the circulation circuit. In the case of having an indirect heating type heat exchanger for bathing that heats the hot water or water inside, the difference between the hot water temperature in the heating can and the bath set temperature is higher than a predetermined temperature when the heating and the bath are used simultaneously. If not, the heating circulation pump was stopped.
[0008]
According to this, during simultaneous use of heating and bathing and heat retention, the temperature of the can body for heating can be detected by the can body temperature sensor, and the detected temperature and the set temperature of the bath can be compared with each other. It is judged whether the hot water temperature is 20 degrees or more higher than the bath set temperature, and when it is high, the heating and bath operation is continued as it is. The hot water bath operation is prioritized and the set temperature is chased and kept warm, so that the user does not feel uneasy, and the heating is temporarily interrupted, but the hot water in the heating can rises due to the interruption. However, if a difference of 20 ° C. or more occurs, it is resumed again.
Therefore, when there is a shortage of capacity, there is no immediate change. Once the room is warmed, the heating with the least urgency is temporarily stopped, and the bath that is needed immediately is always kept at the set temperature. Since it can be heated up, it is easy to use and can be used with peace of mind.
[0009]
Further, in claim 3, a heating burner having a heating burner portion at the lower portion and communicating with a heating circuit having a heating radiator and a heating circulation pump is provided for supplying hot water in communication with city water. What is provided with indirect heating type heat exchange for hot water supply and indirect heating type heat exchange for bath that heats hot water or water in the bathtub communicated with the bathtub through a circulation circuit, When the bath is used at the same time, the heating circulation pump is stopped when the difference between the hot water temperature in the heating can, the hot water supply set temperature, and the higher temperature of the bath set temperature is not higher than a predetermined temperature.
[0010]
According to this, at the time of simultaneous use of heating, hot-water supply and bath chasing and heat retention, the can body temperature sensor detects the hot water temperature in the heating can, and the detected temperature, hot water set temperature and bath set temperature are detected. Compared to the higher temperature, it is judged whether the temperature in the hot water in the heating can is 20 degrees or more higher than the set temperature of the higher temperature. Because it is insufficient, the heating circulation pump is turned off, giving priority to hot water supply and bath operation, which are temporarily used, and hot water at the set temperature, bathing and keeping warm, and anxiety to the user. Heating is temporarily interrupted, but when the temperature of the hot water in the heating can rises due to the interruption and a difference of 20 ° C. or more occurs, the heating is resumed again.
Therefore, when there is a shortage of capacity, there is no immediate change. Once the room is warmed up, the heating with the least urgency is temporarily stopped. Since the hot water supply and the bath can be boiled at the set temperature at all times, it is easy to use and can be used with peace of mind.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, a 1-can 3-circuit type hot-water heating / heating bath apparatus according to the present invention will be described with reference to an embodiment shown in the drawings.
Reference numeral 1 denotes a heating can body having a combustion chamber 3 having a heating burner section 2 at the lower portion. Inside the can body 1, heat for hot water supply that constitutes a heat exchanger for indirect heating hot water supply by a serpentine tube AC 4 and bath heat exchanger 5 constituting a heat exchanger for indirect heating bathing using a serpentine tube are arranged vertically so that hot water heating and hot water supply and bathing can be performed simultaneously or independently. It is a thing.
[0012]
First, the heating circuit A will be described. 6 is a heating forward pipe, 7 is a heating radiator such as a floor heating panel, 8 is a heating return pipe, 9 is a circulation pump for heating, 10 is a gas-liquid separator, and 11 is An expansion tank for heating, 12 is a heating bypass pipe provided with an on-off valve 13, and 14 is a can body temperature sensor used for temperature control of the heating can body 1. The heat medium heated to the control target temperature (88 ° C. or higher) of the body temperature sensor 14 is sent to the heating radiator 7 via the heating forward pipe 6 by the heating circulation pump 9 to perform heating, and the heat dissipation. The low-temperature water (about 30 ° C. to 50 ° C.) radiated by the vessel 7 returns to the heating can 1 through the heating return pipe 8 and is heated to the control target temperature again and circulated.
[0013]
Next, the hot water supply circuit B will be described. 15 is a water supply pipe connected to the water supply, 16 is a flow rate sensor for detecting the flow rate of water, 17 is a hot water supply pipe for discharging hot water heated by the heat exchanger 4 for hot water supply, and 18 is A hot-water tap 19 is connected to the hot-water pipe 17 through the mixing valve 20 and connects the hot-water pipe 15 and the hot-water pipe 17, and 21 is an expansion tank for hot-water supply that absorbs thermal expansion when the hot-water tap 18 is closed. , 22 is a hot water temperature sensor, and 23 is a hot water temperature sensor. When the hot water tap 18 is opened and the flow rate sensor 16 detects the minimum operating flow rate, the temperature of the heat medium in the heating can 1 is as high as about 88 ° C. The burner unit 2 is combusted so that the cold water from the water supply pipe 15 is indirectly heated by the high-temperature heat medium in the heating can 1 in the hot water supply heat exchanger 4 and mixed with the tap water in the mixing valve 20. Is the hot water tap adjusted to an appropriate temperature? It is intended to be hot water supply.
[0014]
Next, the bath circuit C will be described. 24 is a bath tub, 25 is a bath outlet pipe, 26 is a bath return pipe, 27 is a bath circulation pump provided in the return pipe 26, 28 is a running water switch for detecting the presence or absence of circulation, 29 is a bath temperature sensor, and when there is a request to boil the hot water in the bathtub 24, the hot water in the bathtub 24 is circulated to the heat exchanger 5 for the bath by the bath circulation pump 27, and the hot water in the bathtub 24 is heated to the heating can. The hot water in the bathtub 24 is boiled up to a suitable temperature or kept warm by being indirectly heated by a high-temperature heat medium in the inside 1.
[0015]
A hot water filling pipe 30 is branched from the hot water supply pipe 17 of the hot water supply circuit B and connected to the bath circuit C via the hot water filling valve 31 and the three-way valve 32. The bath circuit C and the hot water pipe 30 are switched so as to communicate with each other, and the hot water valve 31 is opened, and the hot water heated by the hot water supply heat exchanger 4 is caused to flow into the bath circuit C and a certain amount to the bath tub 24. The hot water filling is done.
[0016]
Here, 33 is a communication pipe connecting the upper and lower portions of the heating can body 1, and 34 is a stirring circulation pump provided in the middle of the communication pipe 33, which is driven during hot water supply or bath operation, The temperature inside is made uniform up and down, and stirring is continued until the hot water supply or bath operation is completed. Since the heating circulation pump 9 is driven during the heating operation, the stirring circulation pump 34 can be prevented from being driven.
[0017]
Next, the operation of one embodiment of the present invention will be described.
First, the heating operation will be described. The can body temperature sensor 14 detects the hot water temperature in the heating can body 1 and controls the combustion of the burner section 2 so that the temperature becomes about 88 ° C. or higher. The circulation pump 9 is driven to circulate a heating medium such as hot water, circulating liquid, or antifreeze liquid that has become hot in the heating can body 1 through the heating radiator 7 and return to the heating can body 1 again. Then, the room is heated by the heating radiator 7.
[0018]
In the hot water supply operation, when the hot water tap 18 is opened in a state where the inside of the heating can 1 is at a high temperature, the low-temperature water from the water supply pipe 15 immediately passes through the heating can 4 in the heating can 1. At the same time as being indirectly heated by a high-temperature heat medium, the stirring circulation pump 34 is driven to supply hot water at the lower portion of the can body 1 to the upper portion of the can body 1 through the communication pipe 33 to stir the heating can body 1. Thus, the temperature difference between the upper and lower sides in the heating can 1 is eliminated, and hot water having a desired temperature is supplied so that heat exchange can always be performed with the same heat exchange efficiency.
[0019]
Further, in the bath operation, when there is a request to boil the hot water in the bathtub 24 such as turning on a bath heat switch of a remote controller (not shown), the bath circulation pump 27 is driven to exchange the hot water in the bathtub 24 with heat exchange 5 for the bath. The bath temperature sensor 29 is used to heat the hot water in the bath 24 to a desired temperature or keep it warm by heating with a heat medium in the heating can 1 held at a high temperature. It is automatically stopped when the temperature is detected.
[0020]
Next, in the simultaneous use of heating and hot water supply, as explained in the flowchart shown in FIG. 2, the simultaneous use of heating and hot water supply is determined by pressing each operation switch (not shown) (step 35). In step 36, the flow rate sensor 16 determines whether the hot water is being discharged.
If YES in the hot water, the routine proceeds to step 37, where the hot water supply set temperature Tb is subtracted from the current can body temperature Ta detected by the can body temperature sensor 14, and the rest is higher than the predetermined temperature Tc of 20 ° C. When it is high, the step 37 is repeated again with NO, and when it is not high, it is said that the capacity is insufficient, so that the process proceeds to step 38 to stop the driving of the circulation pump 9 for heating and interrupt the heating to give priority to hot water supply. .
[0021]
Here, the predetermined temperature Tc is set to 20 ° C., and there is no temperature difference of 20 ° C. or more between the can body temperature Ta and the hot water supply set temperature Tb. This is because the hot water supply temperature cannot be obtained, and changes due to a change in the number of turns of the hot water supply heat exchanger 4 or a change in the capability of the burner unit 2.
[0022]
Further, after step 38, the process proceeds to step 39, where the can body temperature Ta is again compared with the hot water supply set temperature Tb, the can body temperature Ta rises due to the interruption of heating, and the difference from the hot water supply set temperature Tb is predetermined. The temperature Tc is checked to see if it has become higher than 20 ° C. When the temperature Tc becomes higher, the routine proceeds to step 40 with NO, the heating circulation pump 9 is started to resume heating, and there is still a large temperature rise. If it is not so high, the process proceeds to step 41 with YES to determine whether the hot water supply is continuing. If the hot water supply is stopped, the process proceeds to step 40 with NO to restart the heating. If YES, the process returns to step 35.
[0023]
Next, when heating and hot water are not used at the same time in step 35, the routine proceeds to step 42 with NO, and normal operation is performed, and when hot water supply is not started at step 36, the routine proceeds to step 43 with NO. In normal heating operation is performed.
Therefore, in the simultaneous use of heating and hot water supply, hot water supply is given priority and hot water supply at a set temperature is reliably provided, and hot water supply that is temporarily used is reliably performed, so that it is very convenient to use.
[0024]
Next, in the simultaneous use of heating and bath, as explained in the flowchart shown in FIG. 3, the simultaneous use of heating and bath is determined by pressing each operation switch (not shown) (step 44). In step 45, it is determined whether the bath is circulating.
If YES in the circulation, the process proceeds to step 46 where the bath set temperature Td is subtracted from the current can body temperature Ta detected by the can body temperature sensor 14 and the rest is higher than a predetermined temperature Tc of 20 ° C. When it is high, the step 46 is repeated again with NO, and when it is not high, it is said that the capacity is insufficient, so that the process proceeds to the step 47 to stop the heating circulation pump 9 and interrupt the heating to give priority to the bath operation. Let
[0025]
Further, after step 47, the process proceeds to step 48 where the can body temperature Ta and the bath set temperature Td are compared again, and the can body temperature Ta rises due to the interruption of heating, and the difference from the bath set temperature Td is predetermined. The temperature Tc is checked to see if it has become higher than 20 ° C. When the temperature Tc becomes higher, the routine proceeds to step 49 with NO, the heating circulation pump 9 is started to resume heating, and there is still a large temperature rise. If it is not too high, the process proceeds to step 50 with YES to determine whether the circulation is continuing. If the bath is stopped, the process proceeds to step 49 with NO and heating is resumed. If YES, the process returns to step 44.
[0026]
Next, when heating and bath are not used at the same time in step 44, the process proceeds to step 51 with NO to perform normal operation. When hot water supply is not started at step 45, the process proceeds to step 52 with NO. In normal heating operation is performed.
Therefore, in the simultaneous use of heating and bath, the bath operation at the set temperature is surely provided with priority on the bath operation, and the bath operation, which is a temporary use, is surely performed, which is very convenient to use. .
[0027]
Next, in the case of simultaneous use of heating, hot water supply, and bath, as explained in the flowchart shown in FIG. 4, the simultaneous use of heating, hot water supply, and bath is determined by pressing each operation switch (not shown). (Step 53), if YES, the process proceeds to Step 54 to determine whether the bath is circulating in the hot water.
If YES during circulation in the hot water, the process proceeds to step 55, and the higher setting of the hot water supply set temperature Tb and the bath set temperature Td is subtracted from the current can body temperature Ta detected by the can body temperature sensor 14, and the rest It is determined whether or not the temperature is higher than the predetermined temperature Tc of 20 ° C., and when it is high, step 55 is repeated again with NO, and when it is not high, the capacity is insufficient. , Stop heating and give priority to hot water and bath operation.
[0028]
Further, after step 56, the process proceeds to step 57, where again the can body temperature Ta is increased by comparing the can body temperature Ta, the hot water supply set temperature Tb, and the bath set temperature Td with a higher setting, and heating is interrupted. If the difference from the high set temperature is higher than the predetermined temperature Tc of 20 ° C., the process proceeds to step 58 with NO, and the heating circulation pump 9 is started to restart the heating. If the temperature has not increased and the temperature has not increased yet, the process proceeds to step 59 with YES to determine whether the circulation continues in the hot water. If the hot water supply and bath are stopped, the process proceeds to step 58 with NO. The process advances and restarts heating. Conversely, during hot water supply, the process returns to step 53 with YES.
[0029]
Next, when heating and bath are not used at the same time in step 53, the process proceeds to step 60 with NO to perform normal operation, and when hot water supply and bath operation are not started in step 54, step with NO is performed. Proceeding to 61, the normal heating operation is performed.
Therefore, in the simultaneous use of heating, hot water supply, and bath operation, the hot water supply and bath operation are given priority and hot water supply and bath operation at the set temperature are reliably provided, so that temporary use of hot water supply and bath operation is ensured. It is extremely easy to use.
[0030]
【The invention's effect】
As described above, according to the first aspect of the present invention, when the heating and the hot water supply are used simultaneously, the hot water temperature in the heating can is detected, and the detected temperature and the hot water supply set temperature are compared. The hot water supply operation is continued, and if it is not high, the capacity is insufficient, and the drive of the circulation pump for heating is stopped, giving priority to the hot water supply operation that is temporarily used to supply hot water at the set temperature, and the user feels uneasy When there is a lack of capacity, there is no immediate change, and once the room is warmed, the heating with the least urgency is temporarily stopped and the hot water needed immediately is turned off. Since it can always be supplied at a set temperature, it is easy to use and can be used with peace of mind.
[0031]
According to the second aspect of the present invention, the hot water temperature in the heating can is detected at the same time when the heating and reheating of the bath and the heat insulation are used, and the detected temperature is compared with the set temperature of the bath. If the operation is continued and the capacity is not high when it is not high, the driving of the circulation pump for heating is stopped, giving priority to the bath operation, which is temporarily used, for replenishing the set temperature and keeping the temperature warm. It does not give a sense of anxiety, and when there is a shortage of capacity, it does not immediately change, and once the room is warmed, heating with the least urgency is temporarily stopped and is immediately needed. Since the bath can be always boiled at the set temperature, it is convenient and safe to use.
[0032]
According to the third aspect of the present invention, the hot water temperature in the heating can is detected at the time of simultaneous use of heating, hot water supply, bathing and warming, and the detected temperature, hot water set temperature and bath set temperature are higher. Compared with the temperature, the heating, hot water, and bath operations are continued as they are when the temperature is high, and when it is not high, the capacity is insufficient. Priority is given to bath operation, hot water supply at the set temperature, bathing and warming of the bath is not given, and it does not give the user anxiety. When a lack of capacity occurs, the room does not immediately change, and the room warms up once If it is, the heating with the least degree of urgency is temporarily stopped, and the hot water supply and bath that are needed immediately can be boiled at the set temperature if the higher temperature is used as a reference. Messenger Selfishness is at ease well are those that can be used.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic configuration diagram of a one-can three-circuit type hot-water heating / heating bath apparatus according to an embodiment of the present invention.
FIG. 2 is a flow chart when the heating and hot water are used at the same time.
FIG. 3 is a flow chart when using the same heating and bath operation at the same time.
FIG. 4 is a flow chart when using the heating, hot water supply, and bath at the same time.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heating can body 2 Burner part 4 Hot water supply heat exchange 5 Bath heat exchange 7 Heating radiator 9 Heating circulation pump A Heating circuit B Hot water supply circuit C Bath circuit Ta Can body temperature Tb Hot water supply set temperature Tc Predetermined temperature Td Bath Preset temperature

Claims

For indirect heating type hot water supply for supplying hot water in communication with city water in a heating can which is connected to a heating circuit having a heating burner part at the bottom and having a heating radiator and a circulation pump for heating. If the difference between the hot water temperature in the heating can and the hot water supply set temperature is not higher than a predetermined temperature when the heating and hot water are used at the same time, the heating circulation with the least urgency is provided . hot water heating system, characterized in that Ru once give priority to the hot water supply to stop the pump.

Hot water or water in the bathtub is communicated through the bathtub and the circulation circuit into the heating can body having a heating burner part at the bottom and communicated by a heating circuit having a heating radiator and a circulation pump for heating. If the difference between the hot water temperature in the heating can and the set temperature of the bath is not higher than the predetermined temperature when using the heating and bath at the same time , the emergency degree bath heating system, characterized in that Ru is given priority once the bath operation to stop the lowest heating circulation pump.

For indirect heating type hot water supply for supplying hot water in communication with city water in a heating can which is connected to a heating circuit having a heating burner part at the bottom and having a heating radiator and a circulation pump for heating. In heat exchange and indirect heating type bath heat exchange that heats hot water or water in the bathtub communicated through the bathtub and circulation circuit, at the time of simultaneous use of the heating, hot water supply and bath, If the difference between the hot water temperature in the heating can, the hot water supply set temperature, and the higher bath set temperature is not higher than the predetermined temperature , the heating circulation pump with the lowest urgency level is temporarily stopped and hot water supply and bath operation are performed. hot water bath heating system, characterized in that Ru is given priority.