JP3899610B2

JP3899610B2 - Bath water heater

Info

Publication number: JP3899610B2
Application number: JP25452397A
Authority: JP
Inventors: 龍志岩本; 裕文河島; 和則曽根高; 隆志▲れい▼
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 1997-09-19
Filing date: 1997-09-19
Publication date: 2007-03-28
Anticipated expiration: 2017-09-19
Also published as: JPH1194356A

Description

【０００１】
【発明の属する技術分野】
本発明は、一般家庭用の浄化機能を有する給湯器付きふろ釜における、高温殺菌に関するものである。
【０００２】
【従来の技術】
近年、浴槽水を浄化・殺菌する目的で専用浄化装置や浄化・殺菌機能を有したふろ給湯器が要望されてきているが、従来の浄化・殺菌機能を有したふろ給湯器に関して図面を用いて説明する。
【０００３】
図１２は従来のふろ給湯器の構成図である。図１２において、水は水入口より水温センサ１，水量センサ２を通り、給湯熱交換器３で熱吸収して、給湯センサ４，水量制御弁５を通り、湯出口より放出される。ガスはガス入口より給湯元電磁弁６、給湯ガス比例弁７を通り、給湯バーナ８で燃焼される。
【０００４】
浴槽水は循環ポンプ３２により、風呂接続アダプタ１９，戻り通路１３，水位センサ１４，切換え三方弁１５，風呂センサ９，水流スイッチ１０，風呂熱交換器１１，往き通路１２，風呂接続アダプタ１９と循環し、風呂センサ９で検出する湯温が低下した時には、ガスが風呂ガス元電磁弁１６，ふろガス比例弁１７を通り、風呂バーナ１８で燃焼し、風呂熱交換器１１で熱を吸収して、浴槽水の追い焚きを行う。
【０００５】
浴槽への湯張りは、給湯熱交換器３で熱を吸収した湯が給湯センサ４，水量制御弁５を通り、給湯電磁弁２０，縁切弁２１，往き通路１２および風呂の戻り通路１３を通って、風呂接続アダプタ１９から浴槽へ入る。
【０００６】
【発明が解決しようとする課題】
しかしながら、上記の構成では、浴槽内で溜る垢や湯の汚れのために、複数の人が続けて入浴したり、浴槽の水を毎日続けて使用することは大変不潔であり、これをきれいにするためには浴槽の湯を交換し、浴槽を清掃しなければならないため、大変不経済であり手間のかかる作業であるという課題を有していた。
【０００７】
【課題を解決するための手段】
上記課題を解決するために、本発明の第１手段は、給湯器によって所定温度，所定流量の湯をふろ釜に供給し、水流検出後風呂熱交換器で湯を更に加熱し高温水を所定時間だけ供給することで浄化装置内部を高温にて殺菌するようにしたものである。また所定時間の風呂熱交換器の加熱終了後、高温状態を所定時間保持し更に殺菌期間を設けたものである。
【０００８】
上記した第１手段によれば、浄化装置内に高温水を流し、ばい菌を高温で殺菌して死滅させ、殺菌した菌を機器の外へ排出することにより、浄化装置を清潔にすることができる。
【０００９】
上記した第５手段によれば、高温殺菌運転や逆洗浄運転途中で、使用者の別の運転操作による動作停止や何らかのエラー停止が発生した場合は、次回の高温殺菌運転判定時には必ず高温殺菌運転を行うことができ、確実な殺菌を行い、かつ浄化装置を清潔に保つことができる。
【００１０】
【発明の実施の形態】
本発明の第１実施形態は、給水をバーナで所定温度に加熱する給湯熱交換器と、出湯流量を所定流量に制御する流量制御手段とを有する給湯器と、循環ポンプと、循環水を検出する水流検出手段と、前記循環ポンプにより循環水を前記水流検出手段によって検出して加熱する風呂熱交換器を有するふろ釜と、浴槽と前記ふろ釜を接続する戻り通路と往き通路とからなる循環水回路と、前記循環水回路内に設けた排水口と通電によって異物を凝集するアルミ電極と凝集した異物を除去するろ過材とを有する浄化装置と、前記給湯熱交換器で所定温度に加熱し、かつ前記流量制御手段にて所定流量に制限した温水を、前記ふろ釜に流し、ふろ釜内の風呂熱交換器で更に加熱して高温水とし、加熱タイマ手段の所定時間だけ浄化装置内を高温殺菌する高温殺菌加熱手段と、前記高温殺菌加熱手段の運転終了後、前記加熱した高温水を前記循環ポンプで循環しないで前記循環回路内に保持し、待機タイマ手段の所定時間だけ運転待機する高温保持手段とを有する高温殺菌制御手段を有するものである。
【００１１】
そして、浄化装置内のばい菌を給湯交換器と風呂交換器とで加熱した高温水で殺菌して死滅させるとともに、殺菌した菌を排水口から機器外へ排水することにより、浄化装置を清潔に保ちながら、浴槽水の水位と湯温を一定にして入浴することができる。
【００１２】
また本発明の第２実施形態は、前記高温殺菌制御手段への運転開始指示を所定時間経過毎に行う高温殺菌周期タイマ手段と、ふろ自動湯張り運転開始にて湯張り運転開始から自動保温動作状態までに、少なくとも１回以上は前記高温殺菌周期タイマ手段の運転指示を判断する高温殺菌判定手段を有するものである。
【００１３】
そして、浄化装置内の高温殺菌運転を所定時間毎に定期的に行い、ばい菌の繁殖を阻止することができ、かつふろ自動運転開始からふろ自動運転が沸き上がるまでに高温殺菌運転するかどうかを判定し、使用者が入浴する前に高温殺菌運転を行うことができる。
【００１４】
また、本発明の第３実施形態は、前記高温殺菌周期タイマ手段の周期時間を複数個の所定時間、または任意の時間に設定変更する周期時間設定手段を有するものである。
【００１５】
そして、ふろ給湯器を長い間使用して、浄化装置の汚れや殺菌動作の効果に合わせて、高温殺菌運転を行う周期時間を所定の何れかの時間、または任意に設定でき、１日に行う高温殺菌運転の回数を調整することができる。
【００１６】
また本発明の第４実施形態は、浴槽水を循環ポンプを駆動して、戻り通路、風呂熱交換器、往き通路、浄化装置の下部から上部方向、排水口へ流し、前記高温殺菌制御手段によって殺菌した異物や前記浄化装置により凝集した異物を排水口から排水する逆洗浄制御手段と、前記逆洗浄制御手段への運転指示を上記高温殺菌制御手段と前記高温保持手段による高温殺菌運転が終了した時点で行う逆洗浄判定手段とを有するものである。
【００１７】
そして、浄化手段内に溜る垢や湯の汚れを凝集した異物を機器の外へ排出することにより、浄化装置を清潔に保つことができる。また浄化装置内の空気溜りを機器の外へ排出でき、以降の循環ポンプによる循環動作を即正常に行うことができる。
【００１８】
また本発明の第５実施形態は、前記高温殺菌制御手段の高温殺菌運転と前記逆洗制御手段の逆洗運転との両方の動作が正常に終了した時点で、今回の高温殺菌運転と逆洗運転の終了確定を決定する殺菌運転終了確定手段を有するものである。
【００１９】
そして、前記高温殺菌制御手段の動作途中や前記逆洗制御手段の運転途中で、その他の運転操作や何らかのエラーが発生した場合に高温殺菌運転または逆洗浄運転を停止しても、次回の前記高温殺菌判定手段の判定にて、必ず高温殺菌運転と逆洗浄運転を行うので、定期的に確実に高温殺菌運転を完了することができ、更に浄化装置を清潔に保つことができる。
【００２０】
【実施例】
以下、本発明の実施令について図面を用いて説明する。
【００２１】
（実施例１）
図１は本発明の請求項１に関する実施例１の構成図である。図２は実施例１の高温殺菌に関するブロック構成図である。図３は実施例１の概略フローチャートである。
【００２２】
図１において、水温センサ１と水量センサ２と給湯センサ４と水量制御弁５の制御により給湯熱交換器３の加熱した約４５℃、６Ｌ／ｍｉｎの温水を給湯電磁弁２０および縁切弁２１からバイパス三方弁２２、風呂熱交換器１１へ流し、風呂交換器１１で更に加熱して約７５℃の高温水とし、下部往き通路２８、正逆三方弁２９、ろ過槽２７、排水三方弁２４、排水口３０へ流し、ろ過槽内の高温殺菌を行う構成である。
【００２３】
次に前記高温殺菌の詳細な運転について、図２に基づき説明する。図２において、殺菌開始状態になると高温殺菌加熱手段３４により前記高温殺菌運転を開始する。この高温殺菌運転は、所定時間Ｔｋを有する加熱タイマ手段３５により運転時間を制御され、前記加熱タイマ手段３５の所定時間Ｔｋの経過まで、前記高温殺菌加熱手段３４により高温殺菌運転が行われる。
【００２４】
前記加熱タイマ手段が所定時間Ｔｋの経過を判定すると、判定結果を高温殺菌加熱手段３４に伝え、前記高温殺菌加熱手段３４による高温殺菌加熱（４５℃注湯＋ふろ燃焼）動作が終了する。そして前記高温殺菌加熱手段３４の終了信号を受けて、高温保持手段３６が待機タイマ手段３７内の所定時間Ｔｗ経過まで、高温殺菌待機（４５℃注湯終了＋ふろ燃焼停止）動作を行う。
【００２５】
そして待機タイマ手段３７が所定時間Ｔｗの経過を判定すると、判定結果を高温保持手段３６に伝え、前記高温保持手段３６による高温殺菌待機動作が終了する。以上の動作を図３の概略フローチャートに示す。
【００２６】
（実施例２）
図４は本発明の請求項２に関する実施例２の高温殺菌に関するブロック構成図である。図５は実施例２の概略フローチャートである。
【００２７】
図４において、３９は所定の周期時間Ｔｓ（図示せず）をカウントし、前記周期時間Ｔｓ経過後に前記高温殺菌制御手段３３へ運転指示を出す高温殺菌周期タイマ手段、３８はふろ自動運転が沸き上がり状態になるまでに、前記高温殺菌周期タイマ３９の周期時間Ｔｓ経過を判断し、高温殺菌制御手段３３への運転指示を出す高温殺菌判定手段である。
【００２８】
動作について説明すると、前記高温殺菌周期タイマ手段３９では時間のカウントは常時行われ、周期時間Ｔｓ経過を高温殺菌周期タイマ手段３９が判定すると、周期時間経過結果を高温殺菌判定手段３８へ送る。
【００２９】
高温殺菌判定手段３８は、前記時間経過結果を受け、ふろ自動運転、かつ、沸き上がり状態前かどうか（図示せず）を判断し、前記条件を満たした時点で高温殺菌制御手段３３内の高温殺菌加熱手段３４へ運転指示を出す。
【００３０】
前記高温殺菌加熱手段３４以降の動作は、実施例１と同様であるので省略する。一方、前記高温殺菌周期タイマ手段自体が、周期時間Ｔｓの時間経過を判定した時点で、運転指示を高温殺菌制御手段３３内部の高温殺菌加熱手段に送る。
【００３１】
（実施例３）
図６は本発明の請求項３に関する実施例３の高温殺菌に関するブロック構成図である。図７は実施例３の概略フローチャートである。
【００３２】
図６において、４０は前記高温殺菌周期タイマ手段３９の所定周期時間Ｔｓを任意の時間に設定変更操作を行う外部に設けられた周期設定操作手段である。前記周期設定操作手段４０は例えば、スイッチ切り換え操作による所定個数の周期時間の選択する方式や、ＥＥＰＲＯＭなどの不揮発性の記憶素子に周期時間を記憶させ、その記憶した周期時間を読み出す方式などが挙げられる。
【００３３】
４１は前記周期設定操作手段４０にて設定変更操作された内容を読み取り、設定された周期時間Ｔｓ１を決定し、高温殺菌周期タイマ手段３９にセットする周期時間設定手段である。動作を説明すると、先ず例えば前記スイッチ切り換え方式による周期設定操作手段４０にて、切り換えスイッチ（図示せず）を操作する。
【００３４】
前記切り換えスイッチの操作内容を周期時間設定手段４１にて読み取り、切り換えスイッチ操作を検出する毎に周期時間を例えば時間Ｔｓａ、時間Ｔｓｂ、時間Ｔｓｃと言うように切り換えて行く。そして目的の周期時間（例えば、時間Ｔｓｂ）を選択した時点で、周期時間設定手段４１が選択された周期時間Ｔｓｂを設定変更された周期時間Ｔｓ１として確定し、高温殺菌周期タイマ手段３９への格納を行う。
【００３５】
そして前記高温殺菌周期タイマ手段３９では、格納された周期時間Ｔｓ１の時間カウントを開始し、時間経過を判定する。高温殺菌周期タイマ手段の時間経過判定以降の動作は実施例２と同様であるので省略する。
【００３６】
以上の動作を図７の概略フローチャートに示す。図７（ａ）は、切り換えスイッチ操作による高温殺菌周期時間を切り換える方式の一実施例を示した概略フローチャートである。また図７（ｂ）は、不揮発性メモリに記憶した高温殺菌周期時間を読み出して、高温殺菌周期時間を決定する方式の一実施例を示した概略フローチャートである。
【００３７】
（実施例４）
図８は本発明の請求項４に関する実施例４の高温殺菌に関するブロック構成図である。図９は実施例４の概略フローチャートである。
【００３８】
図８において、４２は高温殺菌制御手段３３内の高温保持手段３６の運転が終了したかどうか判定し、逆洗浄運転を行う指示を出す逆洗浄判定手段である。４３は前記逆洗浄判定手段４２の運転開始指示を受けて、逆洗浄運転を行う逆洗浄運転手段である。
【００３９】
４４は前記逆洗浄運転手段の所定運転時間Ｔｇをカウントする逆洗タイマ手段である。４５は前記逆洗浄判定手段４２と前記逆洗浄運転手段４３と前記逆洗タイマ手段４４とを有する逆洗浄制御手段である。
【００４０】
動作を説明すると、前記高温殺菌制御手段３３内の高温加熱手段３４の運転と高温保持手段３６の運転が終了した時点を前記逆洗浄判定手段４２が判定すると、逆洗浄運転手段４３に運転開始指示を出し、逆洗タイマ手段４４の所定時間Ｔｇの時間カウントの間だけ逆洗運転を行う。
【００４１】
そして前記逆洗タイマ手段４４の所定時間Ｔｇの経過を判定して、逆洗浄運転手段による運転を終了する。以上の動作を図９の概略フローチャートに示す。
【００４２】
（実施例５）
図１０は本発明の請求項５に関する実施例５の高温殺菌に関するブロック構成図である。図１１は実施例５の概略フローチャートである。
【００４３】
図１０において、４６は高温殺菌制御手段３３の所定時間の動作終了と逆洗浄制御手段４５の所定時間の逆洗浄動作終了時点で、今回の殺菌動作が完全に終了したことを判定する殺菌運転終了確定手段である。
【００４４】
動作を説明すると、前記高温殺菌制御手段３３の動作途中で高温殺菌動作が中止されたり、また前記逆洗浄制御手段４５の動作途中で高温殺菌動作が中止された場合には、前記殺菌運転終了確定手段５９がこれを判定し、今回の殺菌動作が完全に終了していないことを認識する。そして次に高温殺菌周期タイマ手段３８への次回の高温殺菌周期時間Ｔｓのセットを行わず、殺菌動作を終了する。
【００４５】
ここで、前記高温殺菌周期タイマ手段３８は周期時間がセットされないので、常に所定時間経過した状態のままとなっており、次回のふろ自動運転時に高温殺菌判定手段３９にて前記高温殺菌周期タイマ手段３８の時間経過信号を受けて、高温殺菌動作を行うため高温殺菌加熱手段３４へ運転指示を出す。
【００４６】
次に前記高温殺菌制御手段３３の所定時間が経過し、また前記逆洗浄制御手段４５の所定時間が経過した場合には、前記殺菌運転終了確定手段４６がこれを判定し、今回の殺菌動作が完全に終了したことを認識する。そして次に高温殺菌周期タイマ手段３８への次回の高温殺菌周期時間Ｔｓを今度はセットし、殺菌動作を終了する。
【００４７】
ここで前記高温殺菌周期タイマ手段３８は、周期時間Ｔｓがセットされたので、以降前記周期時間Ｔｓのカウントを開始する。そして、次回のふろ自動運転した場合に、高温殺菌判定手段３９にて前記高温殺菌周期タイマ手段３８の時間カウント中の信号を受けて、今回の高温殺菌動作は行わない様に指示を出す。以上の動作を図１１の概略フローチャートに示す。
【００４８】
【発明の効果】
以上のように、本発明のふろ給湯器は、浄化装置内に高温水を所定時間だけ流し、かつその後所定時間の待機動作を行うことで、ばい菌を高温で確実に殺菌して死滅させ、殺菌した菌を機器の外へ排出することにより、浄化装置を清潔にすることができる。
【００４９】
また高温殺菌周期時間を設けることにより、浄化装置の高温殺菌運転を自動的に定期的に行うことができる。またふろ自動運転開始から沸き上がり状態までに、所定時間経過を判断するので、使用者が入浴するまでに高温殺菌運転を終了することができ、使用者が入浴する時期には、ふろ給湯器内部の殺菌が終了状態であり、水の汚れやばい菌のない湯を供給できる。
【００５０】
高温殺菌運転の運転周期（運転回数）が設定できるので、使用者の入浴パターンの違いや長い間使用した場合の浄化槽内の蓄積された汚れなどによるばい菌の増加を使用実態に合わせて設定変更でき、浄化装置内の殺菌を行い、清潔に保つことができる。
【００５１】
また、逆洗浄制御装置を高温殺菌制御装置終了後の行うことで、浴槽内や戻り通路や浄化装置内に溜る垢や湯の汚れを凝集した異物を機器の外へ排出して、浄化装置を清潔に保つことができる。
【００５２】
また高温殺菌運転や逆洗浄運転途中で、使用者の別の運転操作による動作停止や何らかのエラー停止が発生した場合は、次回の高温殺菌運転判定時には必ず高温殺菌運転を行うことができ、確実な殺菌を行い、かつ浄化装置を清潔に保つことができる。
【図面の簡単な説明】
【図１】本発明の請求項１に関する実施例１の構成図
【図２】本発明の請求項１に関する実施例１のブロック構成図
【図３】本発明の請求項１に関する実施例１の概略フローチャート
【図４】本発明の請求項２に関する実施例２のブロック構成図
【図５】本発明の請求項２に関する実施例２のタイムチャート
【図６】本発明の請求項３に関する実施例３のブロック構成図
【図７】（ａ）本発明の請求項３に関する切り換えスイッチによる切り換え方式の概略フローチャート
（ｂ）本発明の請求項３に関する不揮発性メモリによる切り換え方式の概略フローチャート
【図８】本発明の請求項４に関する実施例４のブロック構成図
【図９】本発明の請求項４に関する実施例４の概略フローチャート
【図１０】本発明の請求項５に関する実施例５のブロック構成図
【図１１】本発明の請求項５に関する実施例５の概略フローチャート
【図１２】従来のふろ給湯器に関する構成図
【符号の説明】
２５ろ過材
２６アルミ電極
２７ろ過槽
３４高温殺菌加熱手段
３５加熱タイマ手段
３６高温殺菌保持手段
３７待機タイマ手段
３８高温殺菌判定手段
３９高温殺菌周期手段
４０周期設定操作手段
４１周期時間設定手段
４２逆洗浄判定手段
４３逆洗浄運転手段
４４逆洗タイマ手段
４５逆洗浄制御手段
４６殺菌運転終了確定手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to high-temperature sterilization in a water heater equipped with a hot water heater having a purification function for general households.
[0002]
[Prior art]
In recent years, there has been a demand for a dedicated water purifier and a bath water heater having a purifying and sterilizing function for the purpose of purifying and sterilizing bathtub water. explain.
[0003]
FIG. 12 is a configuration diagram of a conventional bath water heater. In FIG. 12, water passes through the water temperature sensor 1 and the water amount sensor 2 from the water inlet, is absorbed by the hot water supply heat exchanger 3, passes through the hot water supply sensor 4 and the water amount control valve 5, and is discharged from the hot water outlet. The gas passes through the hot water supply solenoid valve 6 and the hot water supply gas proportional valve 7 from the gas inlet, and is combusted by the hot water supply burner 8.
[0004]
The bath water is circulated with the bath connection adapter 19, the return passage 13, the water level sensor 14, the switching three-way valve 15, the bath sensor 9, the water flow switch 10, the bath heat exchanger 11, the forward passage 12, and the bath connection adapter 19 by a circulation pump 32. When the bath temperature detected by the bath sensor 9 decreases, the gas passes through the bath gas source solenoid valve 16 and the bath gas proportional valve 17, burns in the bath burner 18, and absorbs heat in the bath heat exchanger 11. Reap the water in the bathtub.
[0005]
The hot water that has been absorbed by the hot water supply heat exchanger 3 passes through the hot water supply sensor 4, the water amount control valve 5, and passes through the hot water electromagnetic valve 20, the edge cut-off valve 21, the forward passage 12, and the bath return passage 13. Go through the bath connection adapter 19 and enter the bathtub.
[0006]
[Problems to be solved by the invention]
However, in the above configuration, it is very filthy for multiple people to take a bath continuously or use the water in the tub every day due to dirt and hot water accumulated in the tub, and clean this. In order to do this, the hot water in the bathtub must be changed and the bathtub must be cleaned, which has the problem of being very uneconomical and laborious.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the first means of the present invention is to supply hot water at a predetermined temperature and flow rate to a bath with a hot water heater, further heat the hot water with a bath heat exchanger after detecting the water flow, and supply hot water with a predetermined temperature. By supplying only the time, the inside of the purification device is sterilized at a high temperature. Further, after the heating of the bath heat exchanger for a predetermined time, the high temperature state is maintained for a predetermined time and a sterilization period is further provided.
[0008]
According to the first means described above, it is possible to clean the purification device by flowing high temperature water into the purification device, sterilizing and killing germs at a high temperature, and discharging the sterilized bacteria out of the device. .
[0009]
According to the fifth means described above, if an operation stop due to another operation by the user or any error stop occurs during the high temperature sterilization operation or the reverse cleaning operation, the high temperature sterilization operation is always performed at the time of determining the next high temperature sterilization operation. Can be reliably sterilized, and the purification device can be kept clean.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
1st Embodiment of this invention detects the circulating water, the hot water supply heat exchanger which heats feed water to a predetermined temperature with a burner, and the flow rate control means which controls a hot water flow rate to a predetermined flow rate, and circulating water A circulation system comprising: a water flow detection means, a bath having a bath heat exchanger that detects and heats the circulating water by the water flow detection means, and a return passage connecting the bathtub and the bath. A purification device having a water circuit, a drain port provided in the circulating water circuit, an aluminum electrode for agglomerating foreign matter when energized, and a filter medium for removing the agglomerated foreign matter, and heated to a predetermined temperature by the hot water heat exchanger In addition, hot water limited to a predetermined flow rate by the flow rate control means is allowed to flow into the funnel, further heated by a bath heat exchanger in the funnel, to become high-temperature water, and inside the purifier for a predetermined time of the heating timer means. Pasteurization High-temperature sterilization heating means, and high-temperature holding means for holding the heated high-temperature water in the circulation circuit without being circulated by the circulation pump after the operation of the high-temperature sterilization heating means and waiting for operation for a predetermined time of the standby timer means And high-temperature sterilization control means.
[0011]
Then, the germs in the purification device are sterilized with high-temperature water heated by a hot water exchanger and a bath exchanger, and the sterilized bacteria are drained out of the device from the drain port, thereby keeping the purification device clean. While bathing, the bath water level and hot water temperature can be kept constant.
[0012]
In addition, the second embodiment of the present invention includes a high temperature sterilization cycle timer means for performing an operation start instruction to the high temperature sterilization control means every elapse of a predetermined time, and an automatic heat retaining operation from the start of the hot water filling operation when the bath automatic hot water filling operation is started. By the state, it has a high temperature sterilization determination means for determining an operation instruction of the high temperature sterilization cycle timer means at least once or more.
[0013]
Then, the high-temperature sterilization operation in the purification device is performed periodically every predetermined time, it is possible to prevent the germs from breeding, and determine whether to perform the high-temperature sterilization operation from the start of the automatic bath operation to the boiling of the automatic bath operation In addition, the high-temperature sterilization operation can be performed before the user takes a bath.
[0014]
Moreover, 3rd Embodiment of this invention has a period time setting means which changes the setting of the period time of the said high-temperature sterilization period timer means to several predetermined time or arbitrary time.
[0015]
And the hot water heater can be used for a long time, and the cycle time for performing the high temperature sterilization operation can be set to any predetermined time or arbitrarily according to the effect of the dirt of the purification device and the sterilization operation, and it is performed in one day The number of high temperature sterilization operations can be adjusted.
[0016]
Further, in the fourth embodiment of the present invention, the bath water is driven by the circulation pump, and flows from the return passage, the bath heat exchanger, the forward passage, the lower part of the purification device to the upper direction, the drain port, and the high temperature sterilization control means. The high temperature sterilization operation by the high temperature sterilization control means and the high temperature holding means has been completed with respect to the reverse cleaning control means for draining the sterilized foreign matter or the foreign matter agglomerated by the purification device from the drain outlet, and the operation instruction to the reverse cleaning control means. And backwashing determination means performed at the time.
[0017]
And the purification apparatus can be kept clean by discharging the foreign matter which condensed the dirt and hot water dirt which accumulate in the purification | cleaning means out of an apparatus. Moreover, the air reservoir in the purification device can be discharged out of the equipment, and the subsequent circulation operation by the circulation pump can be performed normally immediately.
[0018]
Further, in the fifth embodiment of the present invention, when both the high temperature sterilization operation of the high temperature sterilization control means and the backwash operation of the backwash control means are normally finished, It has a sterilization operation end determination means for determining the end of operation.
[0019]
Even if the operation of the high-temperature sterilization control means or the operation of the backwash control means is interrupted and other high-temperature sterilization operation or backwashing operation is stopped when any other operation operation or some error occurs, the next high temperature Since the high temperature sterilization operation and the reverse cleaning operation are always performed by the determination of the sterilization determination means, the high temperature sterilization operation can be completed reliably and the purification device can be kept clean.
[0020]
【Example】
Hereinafter, implementation instructions of the present invention will be described with reference to the drawings.
[0021]
Example 1
FIG. 1 is a block diagram of a first embodiment relating to claim 1 of the present invention. FIG. 2 is a block diagram showing the high-temperature sterilization of the first embodiment. FIG. 3 is a schematic flowchart of the first embodiment.
[0022]
In FIG. 1, hot water of about 45 ° C. and 6 L / min heated by a hot water supply heat exchanger 3 under the control of a water temperature sensor 1, a water amount sensor 2, a hot water supply sensor 4, and a water amount control valve 5 are supplied. From the bypass to the bypass three-way valve 22 and the bath heat exchanger 11, and further heated by the bath exchanger 11 to a high temperature water of about 75 ° C., the lower passage 28, the forward / reverse three-way valve 29, the filtration tank 27, and the drainage three-way valve 24. It is the structure which flows into the drain port 30 and performs high temperature sterilization in the filtration tank.
[0023]
Next, the detailed operation of the high temperature sterilization will be described with reference to FIG. In FIG. 2, when the sterilization start state is reached, the high temperature sterilization heating means 34 starts the high temperature sterilization operation. In this high temperature sterilization operation, the operation time is controlled by the heating timer means 35 having a predetermined time Tk, and the high temperature sterilization heating means 34 performs the high temperature sterilization operation until the predetermined time Tk of the heating timer means 35 elapses.
[0024]
Wherein the heating timer means to determine the elapse of a predetermined time period Tk, convey the determination result to the high-temperature sterilization heating means 34, the high-temperature sterilization heating means 34 according to the high-temperature sterilization heating (45 ° C. Pouring + bath combustion) operation is completed. In response to the end signal from the high temperature sterilization heating means 34, the high temperature holding means 36 performs a high temperature sterilization standby (end of 45 ° C. pouring + end of combustion on the bottom) until a predetermined time Tw in the standby timer means 37 elapses.
[0025]
When the standby timer unit 37 determines that the predetermined time Tw has elapsed, the determination result is transmitted to the high temperature holding unit 36, and the high temperature sterilization standby operation by the high temperature holding unit 36 is completed. The above operation is shown in the schematic flowchart of FIG.
[0026]
(Example 2)
FIG. 4 is a block diagram of high-temperature sterilization according to the second embodiment of the present invention. FIG. 5 is a schematic flowchart of the second embodiment.
[0027]
In FIG. 4, 39 is a high temperature sterilization cycle timer means which counts a predetermined cycle time Ts (not shown) and issues an operation instruction to the high temperature sterilization control means 33 after the elapse of the cycle time Ts. It is a high temperature sterilization determination means for determining the elapse of the cycle time Ts of the high temperature sterilization cycle timer 39 and issuing an operation instruction to the high temperature sterilization control means 33 before reaching the raised state.
[0028]
In terms of operation, the high-temperature sterilization cycle timer means 39 always counts the time. When the high-temperature sterilization cycle timer means 39 determines that the cycle time Ts has elapsed, the cycle time elapse result is sent to the high-temperature sterilization determination means 38.
[0029]
The high temperature sterilization determination means 38 receives the result of the passage of time, determines whether it is in automatic bathing mode and before the boiling state (not shown), and when the condition is satisfied, the high temperature sterilization control means 33 has a high temperature. An operation instruction is issued to the sterilization heating means 34.
[0030]
Since the operation after the high-temperature sterilization heating means 34 is the same as that of the first embodiment, a description thereof will be omitted. On the other hand, when the high temperature sterilization cycle timer means itself determines that the cycle time Ts has elapsed, it sends an operation instruction to the high temperature sterilization heating means inside the high temperature sterilization control means 33.
[0031]
(Example 3)
FIG. 6 is a block diagram showing high-temperature sterilization according to the third embodiment of the present invention. FIG. 7 is a schematic flowchart of the third embodiment.
[0032]
In FIG. 6, reference numeral 40 denotes a period setting operation means provided outside for performing a setting change operation for a predetermined period time Ts of the high temperature sterilization period timer means 39 at an arbitrary time. The cycle setting operation means 40 includes, for example, a method of selecting a predetermined number of cycle times by switching operation, a method of storing the cycle time in a nonvolatile storage element such as an EEPROM, and reading the stored cycle time. It is done.
[0033]
41 is a cycle time setting unit that reads the contents of the setting change operation performed by the cycle setting operation unit 40, determines the set cycle time Ts 1, and sets it in the high-temperature sterilization cycle timer unit 39. The operation will be described. First, for example, the changeover switch (not shown) is operated by the cycle setting operation means 40 by the switch changeover method.
[0034]
The operation content of the changeover switch is read by the cycle time setting means 41, and every time the changeover switch operation is detected, the cycle time is switched to, for example, time Tsa, time Tsb, time Tsc. When the target cycle time (for example, time Tsb) is selected, the cycle time setting unit 41 determines the selected cycle time Tsb as the changed cycle time Ts1 and stores it in the high-temperature sterilization cycle timer unit 39. I do.
[0035]
The high temperature sterilization cycle timer means 39 starts counting the stored cycle time Ts1 and determines the passage of time. Since the operation after the time elapse determination of the high temperature sterilization cycle timer means is the same as that of the second embodiment, the description thereof is omitted.
[0036]
The above operation is shown in the schematic flowchart of FIG. FIG. 7A is a schematic flowchart showing an embodiment of a method for switching the high temperature sterilization cycle time by the changeover switch operation. FIG. 7B is a schematic flowchart showing an embodiment of a method for determining the high temperature sterilization cycle time by reading the high temperature sterilization cycle time stored in the nonvolatile memory.
[0037]
Example 4
FIG. 8: is a block block diagram regarding the high temperature sterilization of Example 4 regarding Claim 4 of this invention. FIG. 9 is a schematic flowchart of the fourth embodiment.
[0038]
In FIG. 8, reference numeral 42 denotes a reverse cleaning determination unit that determines whether or not the operation of the high temperature holding unit 36 in the high temperature sterilization control unit 33 has been completed and issues an instruction to perform a reverse cleaning operation. Reference numeral 43 denotes reverse cleaning operation means for performing reverse cleaning operation in response to an operation start instruction from the reverse cleaning determination means 42.
[0039]
Reference numeral 44 denotes backwash timer means for counting a predetermined operation time Tg of the backwash operation means. Reference numeral 45 denotes a reverse cleaning control means having the reverse cleaning determination means 42, the reverse cleaning operation means 43, and the reverse cleaning timer means 44.
[0040]
Explaining the operation, when the reverse cleaning determination means 42 determines the time point when the operation of the high temperature heating means 34 and the high temperature holding means 36 in the high temperature sterilization control means 33 are finished, the reverse cleaning operation means 43 is instructed to start operation. The backwash operation is performed only during the time count of the predetermined time Tg of the backwash timer means 44.
[0041]
Then, the elapse of the predetermined time Tg of the backwash timer means 44 is determined, and the operation by the backwash operation means is terminated. The above operation is shown in the schematic flowchart of FIG.
[0042]
(Example 5)
FIG. 10: is a block block diagram regarding the high temperature sterilization of Example 5 regarding Claim 5 of this invention. FIG. 11 is a schematic flowchart of the fifth embodiment.
[0043]
In FIG. 10, reference numeral 46 denotes an end of the sterilization operation for determining that the current sterilization operation has been completed at the end of the predetermined time of the high temperature sterilization control means 33 and the reverse cleaning operation of the reverse cleaning control means 45 for a predetermined time. It is a definite means.
[0044]
Explaining the operation, when the high temperature sterilization operation is stopped in the middle of the operation of the high temperature sterilization control means 33, or when the high temperature sterilization operation is stopped in the middle of the operation of the back washing control means 45, the sterilization operation end is confirmed. The means 59 determines this and recognizes that the current sterilization operation is not completely completed. Then, the next high temperature sterilization cycle time Ts is not set in the high temperature sterilization cycle timer means 38, and the sterilization operation is terminated.
[0045]
Here, since the cycle time is not set, the high temperature sterilization cycle timer means 38 always remains in a state where a predetermined time has elapsed, and the high temperature sterilization cycle timer means is operated by the high temperature sterilization determination means 39 at the next automatic bath operation. In response to the time lapse signal 38, an operation instruction is issued to the high temperature sterilization heating means 34 in order to perform the high temperature sterilization operation.
[0046]
Next, when the predetermined time of the high temperature sterilization control means 33 has passed and the predetermined time of the back washing control means 45 has passed, the sterilization operation end determination means 46 determines this, and the current sterilization operation is performed. Recognize that it has finished completely. Next, the next high temperature sterilization cycle time Ts to the high temperature sterilization cycle timer means 38 is set, and the sterilization operation is terminated.
[0047]
Here, since the cycle time Ts is set, the high temperature sterilization cycle timer means 38 starts counting the cycle time Ts thereafter. In the next automatic bathing operation, the high temperature sterilization determining means 39 receives a signal during the time count of the high temperature sterilization cycle timer means 38 and issues an instruction not to perform the current high temperature sterilization operation. The above operation is shown in the schematic flowchart of FIG.
[0048]
【The invention's effect】
As described above, the bath water heater of the present invention allows sterilization by killing germs at high temperature reliably by flowing high temperature water into the purifier for a predetermined time and then performing a standby operation for a predetermined time. The purifier can be cleaned by discharging the germs out of the device.
[0049]
Further, by providing the high temperature sterilization cycle time, the high temperature sterilization operation of the purification device can be performed automatically and periodically. In addition, since the elapse of a predetermined time is determined from the start of the automatic bath operation to the boiling state, the high temperature sterilization operation can be terminated before the user bathes. Sterilization is finished, and hot water free of dirt and germs can be supplied.
[0050]
Since the operation cycle (number of operations) of high-temperature sterilization operation can be set, it is possible to change the setting according to the actual condition of use, such as the difference in user bathing patterns and the increase in germs due to accumulated dirt in the septic tank when used for a long time It can be sterilized in the purification device and kept clean.
[0051]
In addition, by performing the backwash control device after the high temperature sterilization control device is finished, foreign matter that has accumulated in the bathtub, the return passage and the purification device is discharged out of the equipment, and the purification device is It can be kept clean.
[0052]
In addition, if an operation stop due to another user operation or an error stop occurs during the high-temperature sterilization operation or reverse cleaning operation, the high-temperature sterilization operation can be performed at the time of the next high-temperature sterilization operation judgment. Sterilization can be performed and the purification device can be kept clean.
[Brief description of the drawings]
FIG. 1 is a block diagram of a first embodiment related to claim 1 of the present invention. FIG. 2 is a block diagram of a first embodiment related to claim 1 of the present invention. FIG. 4 is a block diagram of a second embodiment related to claim 2 of the present invention. FIG. 5 is a time chart of the second embodiment related to claim 2. FIG. 6 is an embodiment related to claim 3 of the present invention. FIG. 7 is a schematic block diagram of a switching method using a changeover switch according to claim 3 of the present invention. FIG. 8 is a schematic flowchart of a switching method using a nonvolatile memory according to claim 3 of the present invention. FIG. 9 is a block diagram of a fourth embodiment related to claim 4 of the present invention. FIG. 10 is a schematic flowchart of a fourth embodiment related to claim 4 of the present invention. Block diagram of example 5 Figure 11 is a configuration diagram regarding schematic flow chart Figure 12 conventional bath water heater of Example 5 relates to claim 5 of the present invention Description of Reference Numerals]
25 Filter Medium 26 Aluminum Electrode 27 Filtration Tank 34 High Temperature Sterilization Heating Means 35 Heating Timer Means 36 High Temperature Sterilization Holding Means 37 Standby Timer Means 38 High Temperature Sterilization Determination Means 39 High Temperature Sterilization Period Means 40 Period Setting Operation Means 41 Period Time Setting Means 42 Reverse Cleaning Determination means 43 Backwash operation means 44 Backwash timer means 45 Backwash control means 46 Sterilization operation end confirmation means

Claims

給水をバーナで所定温度に加熱する給湯熱交換器と、出湯流量を所定流量に制御する流量制御手段とを有する給湯器と、循環ポンプと、循環水を検出する水流検出手段と、前記水流検出手段によって検出された循環水を加熱する風呂熱交換器を有するふろ釜と、浴槽と前記ふろ釜を接続する戻り通路と往き通路とからなる循環水回路と、前記循環水回路内に設けられた排水口と通電によって異物を凝集するアルミ電極と凝集した異物を除去するろ過材とを有する浄化装置と、前記給湯熱交換器で所定温度に加熱し、かつ前記流量制御手段にて所定流量に制限した温水を、前記ふろ釜に流し、ふろ釜内の風呂熱交換器で更に加熱して高温水とし、加熱タイマ手段の所定時間だけ浄化装置内を高温殺菌する高温殺菌加熱手段と、前記高温殺菌加熱手段の運転終了後、前記加熱した高温水を前記循環回路内に保持し、待機タイマ手段の所定時間だけ運転待機する高温保持手段とを有する高温殺菌制御手段を備えたふろ給湯器。 A hot water supply heat exchanger for heating the hot water to a predetermined temperature with a burner, a hot water heater having a flow rate control means for controlling the hot water flow rate to a predetermined flow rate, a circulation pump, a water flow detection means for detecting circulating water, and the water flow detection Provided in the circulating water circuit, a basin having a bath heat exchanger for heating the circulating water detected by the means, a circulating water circuit composed of a return passage and an outgoing passage connecting the bathtub and the basin A purification device having a drain port, an aluminum electrode for aggregating foreign matter when energized, and a filter medium for removing the agglomerated foreign matter, heated to a predetermined temperature by the hot water heat exchanger, and limited to a predetermined flow rate by the flow rate control means The heated hot water is poured into the funnel and further heated by a bath heat exchanger in the funnel to obtain high-temperature water, and the high-temperature sterilization heating means for sterilizing the inside of the purification device for a predetermined time of the heating timer means, and the high-temperature sterilization heating After the end of operation of the stage, holding the hot water having the heating in said circulation circuit, bath water heater having a high temperature sterilization control means having a high temperature holding means only operating waits for a predetermined time wait timer means.

高温殺菌制御手段への運転開始指示を所定時間経過毎に行う高温殺菌周期タイマ手段と、ふろ自動湯張り運転開始から自動湯張り運転が終了し、自動保温状態までに、少なくとも１回以上は高温殺菌周期タイマ手段の運転指示を判断する高温殺菌判定手段を備えた請求項１記載のふろ給湯器。 High temperature sterilization cycle timer means for instructing operation start to high temperature sterilization control means every predetermined time, and automatic hot water filling operation is completed from the start of bath automatic hot water filling operation, and at least once or more by the automatic heat insulation state. The bath water heater according to claim 1, further comprising high-temperature sterilization determining means for determining an operation instruction of the sterilization cycle timer means.

高温殺菌周期タイマ手段の周期時間を複数個の所定時間、または周期時間を任意の時間に設定変更する周期時間設定手段を備えた請求項２記載のふろ給湯器。 The bath water heater according to claim 2, further comprising cycle time setting means for changing the cycle time of the high temperature sterilization cycle timer means to a plurality of predetermined times, or to set the cycle time to an arbitrary time.

浴槽水を循環ポンプを駆動して、戻り通路、風呂熱交換器、往き通路、浄化装置の下部から上部方向、排水口へ流し、高温殺菌制御手段によって殺菌した異物や前記浄化装置により凝集した異物を排水口から排水する逆洗浄制御手段と、逆洗浄制御手段への運転指示を前記高温殺菌制御手段と高温保持手段による高温殺菌運転が終了した時点で行う逆洗浄判定手段とを備えた請求項１記載のふろ給湯器。 Foreign matter sterilized by high-temperature sterilization control means or foreign matter agglomerated by the purification device by flowing the bathtub water to the return passage, bath heat exchanger, forward passage, purifier from the lower part to the upper direction, drain outlet A reverse cleaning control means for draining water from a drain outlet, and a reverse cleaning determination means for performing an operation instruction to the reverse cleaning control means when the high temperature sterilization operation by the high temperature sterilization control means and the high temperature holding means is completed. The bath water heater according to 1.

高温殺菌制御手段の高温殺菌運転と逆洗制御手段の逆洗運転との両方の動作が正常に終了した時点で、今回の高温殺菌運転と逆洗運転の終了確定を決定する殺菌運転終了確定手段を設け、前記高温殺菌制御手段の動作途中や前記逆洗制御手段の運転途中で停止した場合は、次回の高温殺菌判定手段の判定にて、必ず高温殺菌運転と逆洗運転を行う請求項２または３記載のふろ給湯器。 Sterilization operation end confirmation means for determining the completion of the current high temperature sterilization operation and backwash operation when both the high temperature sterilization operation of the high temperature sterilization control means and the backwash operation of the backwash control means are normally completed. The high temperature sterilization operation and the backwash operation are always performed in the next determination of the high temperature sterilization determination means when the high temperature sterilization control means is stopped during the operation or during the operation of the backwash control means. Or the bath water heater according to 3.