JP3769900B2

JP3769900B2 - Bath water purification device

Info

Publication number: JP3769900B2
Application number: JP27684097A
Authority: JP
Inventors: 祐河合; 朋秀松本; 岳見桶田; 優子藤井
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 1997-10-09
Filing date: 1997-10-09
Publication date: 2006-04-26
Anticipated expiration: 2017-10-09
Also published as: JPH11114327A

Description

【０００１】
【発明の属する技術分野】
本発明は、業務用あるいは家庭用として風呂水を浄化する水浄化装置の技術に関するものである。
【０００２】
【従来の技術】
従来のこの種の浴水浄化装置としては、図７に示すように、微生物の有機物分解作用を利用した浄化装置の濾過器を、浴水を利用して洗浄する濾過器洗浄機能と、濾過器を洗浄する際は浴水が減少しないように浴槽に給湯水の一部を所定の流量だけ注湯する湯張り機能を備えたものがある（例えば、実開平７−３９９０５号公報）。
【０００３】
同図において、１は浴水を保温或いは給水管２から供給された水を加熱し浴槽３に注湯する風呂用熱源であり、風呂用熱交換器４及びバーナー５を有する。６、７はそれぞれ浴槽３内の温水を循環する循環装置、浴水を浄化する濾過器であり、風呂用熱交換器４を含む風呂循環経路８内に設けられている。９、１０はそれぞれ濾過器７の入り口側、出口側に設けられた三方弁であり、濾過器７の通水方向を切り替えることで浴水の浄化、濾過器７の洗浄が可能となっている。また１１は濾過器７を洗浄した洗浄排水を排水する排水管であり、濾過器の入り口側に設けられた三方弁９に接続されている。１２は風呂用熱源に接続された給湯管でありその先端に給湯栓１３が接続されている。１６ａは三方弁１０の下流側の風呂循環経路８と給湯管１２を接続した湯張り管であり、逆止弁１４、電磁弁１５が設けられている。１６は風呂循環経路８に設けられ浴槽３へ吐出する流量を検知する通水量検知センサーである。
【０００４】
この構成において、循環装置６を運転すると浴水が循環され、下方側から上方側に微生物が繁殖した濾過器７を通過することで浴水に含まれるアンモニア及び蛋白質などを分解するとともに、風呂用熱交換器４によって一定温度に加熱され浴槽３に戻される。
【０００５】
また濾過器７を洗浄する際は、濾過器７の入り口側、出口側に設けられた三方弁で流路を切り替えて循環装置６を運転すると浴水が濾過器７の上方側から下方側に流れ、濾過器７内に付着していた汚れが排水管１１から外部に流し出される。またこの時浴槽３の湯が減少するのを防止するため、風呂用熱源１で生成した湯を湯張り管１６ａ、風呂循環経路８を介して浴槽３に注湯を行うようにしている。
【０００６】
【発明が解決しようとする課題】
しかしながら上記従来の浴水浄化装置では、微生物の分解作用により浴水を浄化するもので、濾過器７を洗浄する際は、濾過器７内に繁殖した微生物を死滅しないように洗浄する必要があり、強固に付着した汚れなどを除去すること、濾過器７内に繁殖した病原菌について除去洗浄することができないという課題があった。また微生物の酵素分解作用により浄化を行うもので、浄化速度が遅く、複数の人が続けて入浴した場合、１人目以降の人が入浴する際は十分な浄化がされないため、濁った状態の浴水に入浴しなければならないという課題があった。
【０００７】
【課題を解決するための手段】
本発明は上記課題を解決するため、浴槽内の被濾過水を循環する循環回路と、循環回路に設けられ被濾過水を循環せしめる強制循環手段と、被濾過水に含まれる懸濁物質を電気分解生成物質により凝集する凝集手段と、凝集手段の下流側に設けられ凝集手段で形成した凝集フロックを濾過する濾過手段と、濾過手段に濾過時とは逆方向に通水して濾過手段を洗浄する洗浄手段と、循環回路に接続された給湯手段と、前記濾過手段を洗浄する際の洗浄水を、先に前記給湯手段から供給される高温水に、次に浴槽の水に切替える洗浄水切替制御手段を備えたものである。
【０００８】
上記発明によれば、浴水を浄化する際は、凝集手段に通電して電気分解物質を生成し、懸濁水に含まれる懸濁物質と電気的に吸着させて凝集フロックを形成することで汚れを大型化する。つまり小さな粒子を大きな粒子に吸着させて除去するため短時間で濾過することができ、急速浄化性能が得られる。また濾過手段を洗浄する際は、洗浄水切替手段で給湯手段から供給する高温水と浴水を使用することができる。つまり、高温水の溶解力、分散力（ファンデルワールス力の増加、粘性の低下等）を生かして強固に付着した蛋白質等の汚れの洗浄、病原菌等の殺菌ができるようになり濾過手段の洗浄性能が向上する。
【０００９】
【発明の実施の形態】
本発明の請求項１に係る浴水浄化装置は、浴槽内の被濾過水を循環する循環回路と、循環回路に設けられ被濾過水を循環せしめる強制循環手段と、被濾過水に含まれる懸濁物質を電気分解生成物質により凝集する凝集手段と、凝集手段の下流側に設けられ凝集手段で形成した凝集フロックを濾過する濾過手段と、濾過手段に濾過時とは逆方向に通水して濾過手段を洗浄する洗浄手段と、循環回路に接続された給湯手段と、前記濾過手段を洗浄する際の洗浄水を、先に前記給湯手段から供給される高温水に、次に浴槽の水に切替える洗浄水切替制御手段を備えたものである。
【００１０】
そして浴水を浄化する際は、凝集手段に通電して電気分解物質を生成し、懸濁水に含まれる懸濁物質と電気的に吸着させて凝集フロックを形成することで汚れを大型化することで小さい汚れまで短時間で浄化することができる。また濾過手段を洗浄する際は、浴水を利用して洗浄することで濾過手段内に濾過分離されて堆積した汚れが外部に排出すると共に、洗浄水切替手段で先に給湯手段から供給する高温水を利用することで濾過手段内に強固に付着した蛋白質等の汚れが高温水の溶解力・分散力（ファンデルワールス力の増加、粘性の低下等）により剥離あるいは溶解する。さらに高温水を浴槽水より先に濾過手段に通水することで凝集手段により凝集して大型化した凝集フロックの架橋作用が弱まり凝集フロックが脆弱化するので、次に通水する浴槽水により容易に排出することが可能になる。さらに濾過手段内に繁殖した病原菌が殺菌洗浄される。よって濾過手段の浄化性能を低下させることなく、濾過手段の洗浄性が向上する。
【００１１】
本発明の請求項２に係る浴水浄化装置は、濾過手段を、給湯手段から供給する高温水で所定時間洗浄した後、浴槽の水を用いて所定時間洗浄する様に洗浄水切替制御手段を制御するものである。
【００１２】
そして、給湯手段から供給された高温水により所定時間逆流洗浄を行うことで、高温水の溶解性能により強固に付着した汚れが溶解するとともに、凝集して大型化した汚れの架橋作用の低下による凝集フロックの脆弱化し、さらに濾過手段内に繁殖した病原菌が殺菌され、濾過手段内の外部に排出される。しかし給湯手段の給湯能力により、充分な洗浄流量が得られずに残留する汚れがある可能性がある。本発明によれば高温水を用いた洗浄に引き続き浴槽の水で濾過手段を強制的に洗浄することで充分な洗浄流量が確保でき、濾過手段内に残留する汚れを外部に確実に排出することができる。
【００１３】
本発明の請求項３に係る浴水浄化装置は、洗浄手段に洗浄排水の汚れ度を検知する排水
センサーを備え、前記排水センサーで検知した洗浄排水の汚れ度が所定値以下になれば、洗浄水切替制御手段で給湯手段から供給する高温水を浴槽内の水に切り替える様に制御するものである。
【００１４】
そして、排水の汚れ度が増加している場合は、溶解可能な汚れが残留していると判断し、高温水で洗浄する。また排水の汚れ度が減少している場合は、浴水で洗浄する様に切り替え、残留している比較的大きな径の汚れを排出する。よって高温で溶解する汚れを確実に排出することになり、濾過手段の洗浄性が向上する。
【００１５】
本発明の請求項４に係る浴水浄化装置は、給湯手段から供給する高温水の温度を６０℃以上にするものである。
【００１６】
そして、濾過手段に濾過分離され堆積した汚れは殆ど人体から溶出した蛋白質等の有機物と石鹸成分が結合してできたものが多く、６０℃以上の高温にすることで比較的簡単に溶解することが可能となる。また濾過手段内に繁殖する細菌類は殆どが中温菌であり、生息温度は４３℃以下である。さらに、近年話題となっているレジオネラ肺炎の原因となるレジオネラ属菌は６０℃以下の温度領域では生息可能であるが、６０℃以上の高温下では数分で効果的に殺菌することが可能である。つまり、濾過手段内の汚れ、病原菌を効果的に洗浄・殺菌することができる。
【００１７】
本発明の請求項５に係る浴水浄化装置は、浴槽内の被濾過水を循環する循環回路と、前記循環回路に設けられ被濾過水を循環せしめる強制循環手段と、被濾過水に含まれる懸濁物質を電気分解生成物質により凝集する凝集手段と、前記凝集手段の下流側に設けられ前記凝集手段で形成した凝集フロックを濾過する濾過手段と、前記濾過手段に濾過時とは逆方向に通水して前記濾過手段を洗浄する洗浄手段と、循環回路の浴槽近傍の往き管及び戻り管をバイパスするバイパス回路と、循環回路に設けられた水温制御手段と、濾過手段及び水温制御手段を含む循環回路及びバイパス回路で閉回路を構成する閉回路形成手段を備え、閉回路を形成した状態で水温制御手段を動作させ、前記濾過手段に高温水を所定時間循環した後、前記濾過手段を浴槽の水を用いて洗浄する制御装置を有するものである。
【００１８】
そして、閉回路構成手段により濾過手段を含む閉回路を形成し、水温制御手段で閉回路内に高温水が浴槽水より先に循環する様にするので高温水の洗浄力により汚れ物質が溶解される。また浴槽内の水温を上昇させずに細菌類が繁殖しやすい濾過手段を含む循環回路を殺菌洗浄することができる。この結果濾過手段の洗浄と循環回路の洗浄が併せて行える。
【００１９】
本発明の請求項６に係る浴水浄化装置は、入浴時間帯設定手段と、濾過手段の目詰まり検知手段を備え、入浴設定時間帯に濾過手段の目詰まりを検知した場合は、洗浄水切替制御手段により、給湯手段から供給する高温水で濾過手段を所定時間洗浄した後、給湯手段の加熱部を停止し所定時間低温水で洗浄するものである。
【００２０】
そして、入浴時間帯設定手段により入浴時間帯であることを判断し、洗浄水切替制御手段により給湯手段から洗浄水を確保することで、入浴中に浴水の水位を低下させずに濾過手段を洗浄することができる。よって、快適な入浴が実現する。
【００２１】
本発明の請求項７に係る浴水浄化装置は、濾過手段内に洗浄液を供給する洗浄液供給手段を備え、濾過手段の洗浄前に洗浄液を濾過手段内に供給するものである。
【００２２】
そして、洗浄液が濾過手段内に送られると、濾過手段内に濾過分離され堆積していた汚れが洗浄液の持つ界面活性力により汚れが剥離溶解される。よって強固に付着していた汚
れでも洗浄液の洗浄作用を利用することで洗浄率を向上させることができる。
【００２３】
本発明の請求項８に係る浴水浄化装置は、入浴時間帯設定手段を備え、入浴設定時間帯の前後に濾過手段の洗浄を行うようにしたものである。
【００２４】
そして、入浴時間帯設定手段により、入浴の前後に確実に濾過手段を洗浄するようになる。よって入浴時の濾過手段の目詰まりにより流量が低下することなく入浴時の浄化性能を確保することができる。また入浴後に濾過分離した汚れを濾過手段内に堆積放置しないため細菌類の増殖の原因となる栄養分を除去することができ、濾過手段内での細菌を類の繁殖を低減することができる。
【００２５】
【実施例】
以下、本発明の実施例について図面を用いて説明する。
【００２６】
（実施例１）
図１は本発明の実施例１の水浄化装置の濾過動作状態を示す模式構成図、図２は同水浄化装置の洗浄動作状態を示す模式説明図である。図３は入浴時間帯設定時での濾過・洗浄動作を表すシーケンス図である。図１〜図２において、１７は浴槽１８内の水を循環する強制循環手段である循環ポンプ、１９は循環回路である。２０は循環回路１９に設けられた濾過手段であり、筐体２０ａと、内部に充填された粒状濾材２０ｂと、粒状濾材２０ｂを支持する濾床２０ｃとで構成されている。２１は濾過手段２０内で粒状濾材２０ｂの上流側に設けられた凝集手段であり、アルミニウムからなる陽電極２１ａ、ステンレスからなる陰電極２１ｂ、電極間を通電する電源２１ｃとで構成されている。２２は循環回路１９に設けられ循環する水の水温制御を行う水温制御手段であり、電気ヒータ２２ａとサーミスタ２２ｂとで構成されている。２３は循環回路１９に設けられ循環する水に含まれる細菌類を殺菌する殺菌手段である。２４は第一の流路切替弁（電動三方弁）であり循環ポンプ１７の往き側、濾過手段２０の上流側、排水管２５に接続するように設けられている。２６は第二の流路切替弁（電動三方弁）であり、濾過手段２０の下流側、浴槽１８への戻り側、循環ポンプ１７の吐出側を接続するように設けられている。濾過手段２０の洗浄逆洗手段は、循環ポンプ１７、循環回路１９の一部、第一の流路切替手段２４、第二の流路切替手段２６、排水管２５で構成されている。２７は給水管接続口２７ａと、ガスバーナー２７ｂ、熱交換器２７ｃ、給湯温度制御部２７ｄ（図示せず）、給湯管２７ｅ、二方弁２７ｆ、逆止弁２７ｇで構成された給湯手段であり、濾過手段２０の下流側と、第二の流路切替弁２６の間の循環回路１９に接続されている。２８は洗浄液貯蔵タンク２８ａ、送液ポンプ２８ｂ、逆止弁２８ｃ、送液管２８ｄで構成された洗浄液供給手段であり、濾過手段２０に接続されている。２９は浴槽１８内の水位を検知する水位検知手段であり、循環回路１９の浴槽１８側近傍に設けられている。３０は循環回路１９に設けられた目詰まり検知手段である流量検知センサである。３１は入浴時間帯を設定する入浴時間帯設定手段である。３２は上記した部品の動作等の制御を行うコントローラである。
【００２７】
次に濾過時の動作・作用を図１を用いて説明する。コントローラ３２により第一の流路切替弁２４が循環ポンプ１７と凝集手段２１を連通、第二の流路切替弁２６が浴槽１８の吐出側と濾過手段２０を連通の状態に切り替わり、循環ポンプ１７が動作する。循環ポンプ１７が動作すると、実線矢印で示すように、浴槽１８内の水が循環回路１９内を循環する。これと同時に凝集手段２１が動作、つまり電源２１ｃで陽電極２１ａ、陰電極２１ｂ間に電流が流れるようになり陽電極２１ａからアルミニウムイオンが溶出するようになる。アルミニウムイオンが溶出されると、水と化学反応を生じて電気的にプラスに帯電した水酸化アルミニウムが形成される。また循環する水には電気的にマイナスに帯電した懸濁物質が含まれているため、電気的に吸着され大型化し数十マイクロの径となる凝集フロックを形成する。形成された凝集フロックは下流側に流され濾過手段２０に充填された粒状
濾材２０ｂで濾過されて懸濁物質が除去（清澄化）され浴槽１８に戻される。この浴槽１８に戻される際には、コントローラ３２により水温制御手段２２で浴槽１８内が所定の温度になるように電気ヒータ２２ａで加熱されると共に、殺菌手段２３も動作し、循環する水が殺菌されている。この状態を継続されると、循環する水は清澄化されるが、濾過手段２０内の粒状濾材２０ｂで形成される濾材層の上方には凝集フロックが濾過分離され徐々に堆積する様になり、濾過手段２０の通水抵抗が増大し、循環流量が低下するようになる。
【００２８】
次に濾過手段２０の洗浄時の動作・作用を、図２を用いて説明する。循環流量が低下し、流量検知手段３０である流量センサーで検知する信号が所定値以下になれば、コントローラ３２により、第一の流路切替弁２４が排水管２５を連通、第二の流路切替弁２６が閉の状態に切り替わり、洗浄液供給手段２８が動作し、送液ポンプ２８ｂが洗浄液貯蔵タンク２８ａから洗浄液を、送液管２８ｄを通じて濾過手段２０内に所定量注入する。洗浄液が注入されると、濾過手段２０内に充填された粒状濾材２０ａや濾床２０ｂ、筐体２０ａ内面に強固に付着している汚れが洗浄液の界面活性作用により、剥離・溶解・分散されるようになる。
【００２９】
さらに洗浄液が濾過手段２０内に送られて所定時間経過すれば、コントローラ３２により、給湯手段２７の二方弁２７ｆが開になり、給水管接続口２７ａから水道水が流入する。これと同時にガスバーナー２７ｂが燃焼し、熱交換機２７ｃを通水することで水道水が受熱される。このとき給湯温度制御部２７ｄで給湯管２７ｅに送られる水が６０℃以上になっている。さらに給湯管２７ｅに送られた高温水（６０℃以上の水）は破線矢印で示すように、濾過手段２０の下方部から流入し、濾過手段２０内に充填している粒状濾材２０ｂを少しだけ上昇させる様に逆流する。このようになれば、粒状濾材２０ｂの上方に堆積していた凝集フロックの架橋作用が低下し凝集フロックが脆弱化する。またこのとき濾過手段２０内に繁殖していた細菌類が高温水により殺菌され死滅する様になる。さらに濾過手段２０内を洗浄した高温水は比較的小さい汚れを浮上させ排水管２５から外部に排出する。
【００３０】
さらに、高温水による洗浄が所定時間経過すれば、コントローラ３２により、第一の流路切替弁２４が排水管２５を連通、第二の流路切替弁２６が循環ポンプ１７の吐出側と濾過手段２０を連通の状態に切り替え、循環ポンプ１７が動作する。循環ポンプ１７が動作すると、実線矢印で示すように、浴槽１８内の水が循環回路１９の一部、循環ポンプ１７、第二の流路切替弁２６を通過し、濾過手段２０の下流側から流入し濾過手段２０内に充填された粒状濾材２０ｂを浮上攪拌させながら逆流するようになる。このようになれば濾過手段２０では洗浄液及び高温水により溶解・分散された凝集フロック等の汚れが水流と共に上方に流れ、第一の流路切替弁２４、排水管２５を通過して外部に排出されるようになる。尚、洗浄流量は高温水で洗浄する時より多くなる様に制御している。この洗浄動作が所定時間行われれば、コントローラ３２により再度濾過運転を行うように制御している。
【００３１】
次に図３を用いて、一日の濾過・洗浄、入浴時間帯の設定について説明する。入浴時間帯設定手段３１で循環濾過動作を行っている状態で入浴設定時間が近づくと自動的に入浴設定時間に間に合うように、また入浴設定時間が終了すると自動的にコントローラ３１での洗浄を行う様にコントローラ３２で制御している。さらに入浴設定時間中に循環流量が低下し、流量検知手段３０である流量センサーで検知する信号が所定値以下になれば、上記したように洗浄液供給手段２８による洗浄動作、給湯手段２７での高温水を用いた洗浄動作を行う、その後、給湯手段２７のガスバーナ２７ｂを停止して低温水が濾過手段２０に流入し低温水で洗浄され、内部に残留している汚れが濾過手段２０から外部に排出される。またこのとき給湯温度制御部２７ｄでは洗浄水の流量が増加するように制御されてい
るため濾過手段２０はきれいに洗浄できる。
【００３２】
以上本実施例では以下に示す効果がある。
【００３３】
（１）濾過手段の洗浄を行う際には先に洗浄液を濾過手段内に供給し、高温水で洗浄することで汚れ成分が溶解、分散するため、浴水を濾過時とは逆に通水することで簡単に且つきれいに洗浄することができる。また洗浄水を供給した後、高温水、浴水を逆向きに通水するため濾過手段内の洗浄液が自動的に排出できる。
【００３４】
（２）目詰まり検知手段である流量検知手段３０で、濾過手段２０の目詰まりを検知し、自動的に濾過手段２０を洗浄するため使用者は濾過手段２０を洗浄することなく装置の使い勝手が向上する。
【００３５】
（３）凝集手段２１を備えているため、急速浄化性能が確保できる。
【００３６】
（４）入浴時間帯を設定すると入浴時間の前後に自動的に濾過手段２０の洗浄を行うようになり、装置の目詰まりや細菌の繁殖を低減することができる。
【００３７】
（実施例２）
図４において、３３は排水管２５に設けられた洗浄排水の汚れ度を検知する排水センサーである。３４は排水センサー３３で検知した信号に基づき洗浄水切替制御手段の制御を含めて行うコントローラである。そのほかは実施例１と同様である。
【００３８】
濾過手段２０の洗浄時の動作・作用を、図４を用いて説明する。循環流量が低下し、流量検知手段３０である流量センサーで検知する信号が所定値以下になれば、コントローラ３４により、第一の流路切替弁２４が排水管２５を連通、第二の流路切替弁２６が閉の状態に切り替わり、洗浄液供給手段２８が動作し、送液ポンプ２８ｂが洗浄液貯蔵タンク２８ａから洗浄液を送液管２８ｄを通じて濾過手段２０内に所定量注入する。洗浄液が注入されると、濾過手段２０内に充填された粒状濾材２０ｂや濾床２０ｃ、筐体２０ａ内面に強固に付着している汚れが界面活性作用により、剥離・溶解・分散されるようになる。
【００３９】
さらに洗浄液が濾過手段２０内に送られて所定時間経過すれば、コントローラ３４により、給湯手段２７の二方弁２７ｆが開になり、給水管接続口２７ａから水道水が流入する。これと同時にガスバーナー２７ｂが燃焼し、熱交換機２７ｃを通水することで水道水が受熱される。このとき給湯温度制御部２７ｄで給湯管２７ｅに送られる水が６０℃以上になるようにしている。さらに給湯管２７ｅに送られた高温水（６０℃以上の水）は破線矢印で示すように、濾過手段２０の下方部から流入し、濾過手段２０内に充填している粒状濾材２０ｂを少しだけ上昇させる様に逆流する。このようになれば、粒状濾材２０ｂの上方に堆積していた凝集フロックの架橋作用が低下し、凝集フロックが脆弱化される。またこのとき濾過手段２０内に繁殖していた細菌類が高温水により殺菌され死滅する様になる。また濾過手段２０内を洗浄した高温水は比較的小さい汚れを排水管２５から外部に排出するようになる。この状態が継続されると小さな汚れが排出されると共に、高温水で溶解される汚れが溶解され排出され、排水汚れの濁り度合いが減少する。このとき排水管２５に設けられた排水センサー３３でも検知する汚れの濁りが減少し、所定値以下になればコントローラ３４により、第一の流路切替弁２４が排水管２５を連通、第二の流路切替弁２６が循環ポンプ１７の吐出側と濾過手段２０を連通の状態に切り替え、循環ポンプ１７が動作する。循環ポンプ１７が動作すると、実線矢印で示すように、浴槽１８内の水が循環回路１９の一部、循環ポンプ１７、第二の流路切替弁２６を通過し、濾過手段２０の下流側から流入し濾過手段２０内に充填された粒状濾材２０ｂを浮上攪拌しながら逆流するようになる。このようになれば濾過手段２０では洗浄液及び高温水により分解・溶解小型化
された凝集フロック等の汚れが水流と共に上方に流れ、第一の流路切替弁２４、排水管２５を通過して外部に排出されるようになる。尚、洗浄流量は高温水で洗浄する時より多くなる様に制御している。この洗浄動作が所定時間行われれば、コントローラ３４により再度濾過運転を行うように制御している。濾過時の動作、入浴時間設定時での動作は実施例１と同様であり省略する。
【００４０】
（実施例３）
図５は同水浄化装置の洗浄動作状態を示す模式説明図である。図５において、３５は濾過手段２０内に設けられた加熱手段であり、電気ヒータ３５ａとサーモスタット３５ｂとで構成されている。３６は加熱手段３５の制御を含めて行うコントローラである。そのほかは実施例１と同様である。
【００４１】
濾過手段２０の洗浄時の動作・作用を、図５を用いて説明する。循環流量が低下し、流量検知手段３０である流量センサーで検知する信号が所定値以下になれば、コントローラ３６により、第一の流路切替弁２４が排水管２５を連通、第二の流路切替弁２６が閉の状態に切り替わり、洗浄液供給手段２８が動作し、送液ポンプ２８ｂが洗浄液貯蔵タンク２８ａから洗浄液を送液管２８ｄを通じて濾過手段２０内に所定量注入する。洗浄液が注入されると、濾過手段２０内に充填された粒状濾材２０ｂや濾床２０ｃ、筐体２０ａ内面に強固に付着している汚れが洗浄液成分により、剥離・溶解・分散されるようになる。
【００４２】
さらに洗浄液が濾過手段２０内に送られて所定時間経過すれば、コントローラ３６により、加熱手段３５の電気ヒーターが通電され、濾過手段２０内が所定温度まで加熱される。このようになれば、濾過手段２０内に対流が起きると共に粒状濾材２０ａの上方に堆積していた凝集フロックの膜状のものが破壊されるとともに凝集フロックが脆弱化する様になる。またこのとき濾過手段２０内に繁殖していた細菌類が加熱殺菌され死滅する。濾過手段２０内が所定温度で所定時間加熱されれば、コントローラ３６により、第一の流路切替弁２４が排水管２５を連通、第二の流路切替弁２６が循環ポンプ１７の吐出側と濾過手段２０を連通の状態に切り替え、循環ポンプ１７が動作する。循環ポンプ１７が動作すると、実線矢印で示すように、浴槽１８内の水が循環回路１９の一部、循環ポンプ１７、第二の流路切替弁２６を通過し、濾過手段２０の下流側から流入し濾過手段２０内に充填された粒状濾材２０ｂを浮上攪拌しながら逆流するようになる。このようになれば濾過手段２０では洗浄液及び高温加熱により剥離・溶解・分散された凝集フロック等の汚れが水流と共に上方に流れ、第一の流路切替弁２４、排水管２５を通過して外部に排出されるようになる。この洗浄動作が所定時間行われれば、コントローラ３６により再度濾過運転を行うように制御している。濾過時の動作、入浴時間設定時での動作は実施例１と同様であり省略する。
【００４３】
以上本実施例では以下に示す効果がある。
【００４４】
（１）濾過手段２０を洗浄する際に高温で所定時間維持するため、例え濾過手段２０内に細菌が繁殖しても加熱して殺菌される。よって、細菌学的に汚染がなく、使用者が安心して使用できる。
【００４５】
（２）濾過手段２０内を高温にした後、濾過手段２０を浴水を用いて洗浄するため、高温水は外部に排出される。よって、続けて濾過運転を行っても高温水が浴槽１８内に流入することがなく安全である。
【００４６】
（実施例４）
図６は同水浄化装置の高温循環状態を示す模式説明図である。図６において３７、３８は循環回路１９の浴槽１８吐出側、吸込側にそれぞれ設けられた閉回路構成手段である第
三の流路切替弁、第四の流路切替弁である。３９は第三の流路切替弁３７、第四の流路切替弁３８を連結するバイパス管である。その他は実施例１と同じである。
【００４７】
濾過手段２０の洗浄時の動作・作用を図５を用いて説明する。循環流量が低下し、流量検知手段３０である流量センサーで検知する信号が所定値以下になれば、コントローラ４０により、第一の流路切替弁２４が排水管２５を連通、第二の流路切替弁２６が閉の状態に切り替わり、洗浄液供給手段２８が動作し、送液ポンプ２８ｂが洗浄液貯蔵タンク２８ａから洗浄液を送液管２８ｄを通じて濾過手段２０内に所定量注入する。洗浄液が注入されると、濾過手段２０内に充填された粒状濾材２０ｂや濾床２０ｃ、筐体２０ａ内面に強固に付着している汚れが洗浄液成分により、剥離・溶解・分解されるようになる。
【００４８】
さらに洗浄液が濾過手段２０内に送られて所定時間経過すれば、コントローラ４０により、第一の流路切替弁２４が循環ポンプ１７と凝集手段２１を連通、第二の流路切替弁２６が浴槽１８の吐出側と濾過手段２０を連通、第三の流路切替弁３７が第二の流路切替弁２６とバイパス管３９を連通、第四の流路切替弁３８の吸込側とバイパス管３９を連通する状態に切り替わり、循環ポンプ１７が動作し実線矢印に示すように水が循環する。さらに水温制御手段２２の電気ヒータ２２ａが通電され、濾過手段２０及び循環回路１９及びバイパス回路３９で形成される閉回路内が所定温度まで加熱される。このようになれば、循環回路１９内及び濾過手段２０内に堆積して付着している汚れや凝集フロックが溶解・分散される。またこのとき循環回路１９及び濾過手段２０内に繁殖していた細菌類が加熱され死滅する。さらに濾過手段２０内が所定温度で所定時間加熱されれば、コントローラ４０により、第一の流路切替弁２４が排水管２５を連通、第二の流路切替弁２６が循環ポンプ１７の吐出側と濾過手段２０を連通、第三の流路切替弁３７及び第四の流路切替弁３８のそれぞれバイパス管３９側が閉の状態に切り替えられ、循環ポンプ１７が動作する。循環ポンプ１７が動作すると、浴槽１８内の水が循環回路１９の一部、循環ポンプ１７、第二の流路切替弁２６を通過し、濾過手段２０の下流側から流入し濾過手段２０内に充填された粒状濾材２０ｂを浮上させながら逆流するようになる。このようになれば濾過手段２０では洗浄液及び高温循環時の加熱により剥離・溶解・分散された凝集フロック等の汚れが水流と共に上方に流れ、第一の流路切替弁２４、排水管２５を通過して外部に排出されるようになる。この洗浄動作が所定時間行われれば、コントローラ４０により再度濾過運転を行うように制御している。濾過時の動作、入浴時間設定時での動作は実施例１と同様であり省略する。
【００４９】
以上本実施例では以下に示す効果がある。
【００５０】
（１）循環回路１９内に高温水を循環することで、循環回路１９内の洗浄・高温殺菌ができる。よって、循環回路１９内が細菌学的に安全な状態に維持できる。
【００５１】
（２）高温水を循環することで、濾過手段２０内と循環回路１９内の溶解洗浄が同時にできる。
【００５２】
（３）循環回路１９に設けた水温制御手段２２は浴水の循環保温だけでなく、高温循環時にも使用することができる。
【００５３】
【発明の効果】
以上説明したように本発明の請求項１に係る浴水浄化装置は、濾過手段を洗浄する際は、先に前記給湯手段から供給される高温水で、次に浴水を利用して洗浄することで濾過手段内に濾過分離されて堆積した汚れが外部に排出される。すなわち、給湯手段から供給する高温水を浴槽水より先に利用して濾過手段内に強固に付着した汚れを溶解洗浄、凝集して大型化した汚れを脆弱化し分散して排出し易くすることができる。さらに濾過手段内に
繁殖した病原菌が殺菌洗浄できる。よって濾過手段の浄化性能を低下させることなく、濾過手段の洗浄性を向上することが可能となる。
【００５４】
また、請求項２に係る浴水浄化装置は、濾過手段を給湯手段から供給する高温水で所定時間洗浄した後、浴槽水を用いて所定時間洗浄する様にしたため、濾過手段内に強固に付着した汚れを溶解、凝集して大型化した汚れを脆弱にし、さらに溶解・分散することができる。さらに浴水を利用することで最適な洗浄流量を確保して洗浄することができる。つまり、汚れを排出しやすくした後、適正な流量で洗浄することで、汚れを確実に排出することができる。
【００５５】
また、請求項３に係る浴水浄化装置は、洗浄手段に洗浄排水の汚れ度を検知する排水センサーを備え、前記排水センサーで検知した洗浄排水の汚れ度が所定値以下になれば、洗浄水切替制御手段で給湯手段から供給する高温水を浴槽内の水に切り替える様に制御する
また、請求項４に係る浴水浄化装置は、高温水の温度を６０℃以上したため、濾過手段内に堆積した汚れである蛋白質等の有機物と石鹸成分が結合した金属石鹸成分や病原菌を効率的に溶解、分散、死滅させることができる。
【００５６】
また、請求項５に係る浴水浄化装置は、閉回路構成手段により濾過手段を含む循環回路に閉回路を形成し、水温制御手段によって高温水を循環させることで、浴槽内の水温を上昇させることなく細菌類が繁殖しやすい濾過手段を含む循環回路を殺菌洗浄することができる。また浴槽水より先に水温制御手段で閉回路内に高温水が循環する様にするので高温水の洗浄力により付着した汚れ物質を溶解、分散することができる。つまり、濾過手段内の汚れを排出し易くして洗浄効率の向上と濾過手段の洗浄と循環回路の洗浄が併せて行える。
【００５７】
また、請求項６に係る浴水浄化装置は、入浴設定時間帯である場合は、給湯手段から洗浄水を確保することで、いつでも適切な水位を確保することができ、快適な入浴が実現する。また洗浄温度を変化させることで洗浄性能が確保できる。
【００５８】
また、請求項７に係る浴水浄化装置は、濾過手段の洗浄に先立ち、洗浄液を濾過手段内に供給することで、洗浄液の持つ界面活性作用により濾過手段内に強固に付着していた汚れを簡単に洗浄することができ、濾過手段の洗浄性を向上することができる。
【００５９】
また、請求項８に係る浴水浄化装置は、入浴設定時間帯の前後に濾過手段の洗浄を行うことで、入浴時の濾過手段の目詰まりによる循環流量の低下を防ぐことができ、入浴時の浄化性能を確保することができる。また入浴後には細菌類の栄養源となる汚れを確実に排出することになり細菌類の繁殖を低減できる。
【図面の簡単な説明】
【図１】本発明の実施例１における水浄化装置の濾過動作状態を示す模式構成図
【図２】同水浄化装置の洗浄動作状態を示す模式説明図
【図３】同水浄化装置の濾過・洗浄動作を表すシーケンス図
【図４】本発明の実施例２における凝集手段および洗浄動作状態を示す模式説明図
【図５】本発明の実施例３における濾過手段の構成を示す模式説明図
【図６】本発明の実施例４における水浄化装置の高温循環状態を示す模式説明図
【図７】従来の水浄化装置の模式構成図
【符号の説明】
１７循環ポンプ
１８浴槽
１９循環回路
２０濾過手段
２０ｂ粒状濾材
２１凝集手段
２１ａ陽電極
２１ｂ陰電極
２１ｃ電源
２２水温制御手段
２２ａ電気ヒータ
２２ｂサーミスタ
２４第一の流路切替弁
２６第二の流路切替弁
２７給湯手段
２７ｂガスバーナー
２７ｃ熱交換器
２７ｄ給湯温度制御部
２７ｅ給湯管
２８洗浄液供給手段
２８ａ洗浄液貯蔵タンク
２８ｂ送液ポンプ
２８ｄ送液管
２９水位検知手段
３０目詰まり検知手段
３１入浴時間帯設定手段
３２，３４，３６コントローラ
３３排水センサー
３５加熱手段
３５ａ電気ヒータ
３５ｂサーミスタ
３７第三の流路切替弁
３８第四の流路切替弁
３９バイパス管[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technology of a water purification device that purifies bath water for business use or home use.
[0002]
[Prior art]
As a conventional bath water purifying apparatus of this type, as shown in FIG. 7, a filter cleaning function for cleaning a filter of a purifying apparatus using an organic matter decomposition action of microorganisms using bath water, and a filter Some baths have a hot water filling function for pouring a part of hot water into a bathtub at a predetermined flow rate so that bath water does not decrease (for example, Japanese Utility Model Publication No. 7-39905).
[0003]
In the figure, reference numeral 1 denotes a bath heat source for keeping bath water warm or pouring water supplied from a water supply pipe 2 and pouring water into a bathtub 3, and includes a bath heat exchanger 4 and a burner 5. Reference numerals 6 and 7 denote a circulation device that circulates hot water in the bathtub 3 and a filter that purifies the bath water, and are provided in the bath circulation path 8 including the bath heat exchanger 4. Reference numerals 9 and 10 denote three-way valves provided on the inlet side and the outlet side of the filter 7, respectively. By switching the water flow direction of the filter 7, the bath water can be purified and the filter 7 can be washed. . Reference numeral 11 denotes a drain pipe for draining the washing waste water that has washed the filter 7 and is connected to a three-way valve 9 provided on the inlet side of the filter. A hot water supply pipe 12 is connected to a heat source for bath, and a hot water tap 13 is connected to the tip thereof. Reference numeral 16a denotes a hot-water pipe that connects the bath circulation path 8 downstream of the three-way valve 10 and the hot water supply pipe 12, and is provided with a check valve 14 and an electromagnetic valve 15. Reference numeral 16 denotes a water flow amount detection sensor that is provided in the bath circulation path 8 and detects a flow rate discharged to the bathtub 3.
[0004]
In this configuration, when the circulation device 6 is operated, the bath water is circulated, and the ammonia and proteins contained in the bath water are decomposed by passing through a filter 7 in which microorganisms have propagated from the lower side to the upper side. Heated to a constant temperature by the heat exchanger 4 and returned to the bathtub 3.
[0005]
When the filter 7 is washed, the bath water is moved from the upper side to the lower side of the filter 7 by switching the flow path with a three-way valve provided on the inlet side and the outlet side of the filter 7 and operating the circulation device 6. The dirt that has flowed and adhered to the filter 7 is discharged from the drain pipe 11 to the outside. At this time, in order to prevent the hot water in the bathtub 3 from decreasing, the hot water generated by the bath heat source 1 is poured into the bathtub 3 via the hot water pipe 16 a and the bath circulation path 8.
[0006]
[Problems to be solved by the invention]
However, in the above conventional bath water purifier, the bath water is purified by the decomposition action of microorganisms. When the filter 7 is washed, it is necessary to wash the microorganisms propagated in the filter 7 so as not to be killed. There is a problem that it is impossible to remove dirt and the like that are firmly attached, and it is impossible to remove and wash the pathogenic bacteria propagated in the filter 7. In addition, it is purified by the enzymatic decomposition action of microorganisms, and when the rate of purification is slow and multiple people take a bath continuously, when the first and subsequent people take a bath, the bath is in a turbid state because it is not sufficiently purified. There was a problem of having to bathe in water.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a circuit for circulating the filtered water in the bathtub, a forced circulation means for circulating the filtered water provided in the circulating circuit, and a suspended substance contained in the filtered water. Aggregating means for aggregating with the decomposition product, filtering means for filtering the aggregated floc formed downstream of the aggregating means, and passing the water through the filtering means in the opposite direction to the filtration means to wash the filtering means The cleaning means, the hot water supply means connected to the circulation circuit, and the washing water used for cleaning the filtering means are switched to the high-temperature water supplied from the hot water supply means first, and then to the bath water. Get A washing water switching control means is provided.
[0008]
According to the above invention, when purifying the bath water, an electrolysis substance is generated by energizing the aggregating means, and is electrically adsorbed with the suspended substance contained in the suspended water to form an agglomerated floc. Increase the size. That is, since small particles are adsorbed and removed by large particles, they can be filtered in a short time, and a rapid purification performance can be obtained. Moreover, when washing | cleaning a filtration means, the high temperature water and bath water which are supplied from a hot water supply means by a washing water switching means can be used. In other words, by utilizing the dissolving power and dispersion power of high-temperature water (increase in van der Waals force, decrease in viscosity, etc.), it is possible to wash dirt such as proteins that adhere firmly, and to sterilize pathogens and wash filtration means. Performance is improved.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The bath water purification apparatus according to claim 1 of the present invention includes a circulation circuit for circulating the filtered water in the bathtub, a forced circulation means provided in the circulating circuit for circulating the filtered water, and a suspension included in the filtered water. Aggregating means for aggregating the turbid substance with the electrolysis product substance, a filtering means for filtering the aggregated floc provided downstream of the aggregating means and formed by the aggregating means; Washing means for washing the filtering means, hot water supply means connected to the circulation circuit, and washing water used for washing the filtering means to the high-temperature water supplied from the hot water supply means first, and then to the bath water switching Get A washing water switching control means is provided.
[0010]
And when purifying the bath water, energize the agglomeration means to generate an electrolyzed material, and make it adsorbed with the suspended material contained in the suspended water to form an agglomerated floc to enlarge the dirt. It can be cleaned in a short time to small dirt. Also, when washing the filtering means, the accumulated dirt that has been filtered and separated in the filtering means by washing with bath water is discharged to the outside, and the high temperature supplied from the hot water supply means first by the washing water switching means. By using water, the dirt such as protein that adheres firmly in the filtering means is peeled or dissolved by the dissolving power / dispersing power of high temperature water (increase in van der Waals force, decrease in viscosity, etc.). Furthermore, by passing high-temperature water through the filtering means before the bath water, the cross-linking action of the agglomerated flocs aggregated and enlarged by the aggregating means is weakened and the agglomerated flocs are weakened. Can be discharged. Furthermore, the pathogenic bacteria propagated in the filtering means are sterilized and washed. Therefore, the cleaning performance of the filtering means is improved without degrading the purification performance of the filtering means.
[0011]
The bath water purifying apparatus according to claim 2 of the present invention comprises a washing water switching control means so that the filtering means is washed for a predetermined time with hot water supplied from the hot water supply means and then washed for a predetermined time using the water in the bathtub. It is something to control.
[0012]
And by performing the backwashing for a predetermined time with the high-temperature water supplied from the hot water supply means, the dirt adhered firmly due to the dissolution performance of the high-temperature water is dissolved, and the aggregation due to the reduction of the cross-linking action of the agglomerated and enlarged dirt The flocs are weakened, and the pathogenic bacteria that have propagated in the filtering means are sterilized and discharged outside the filtering means. However, due to the hot water supply capability of the hot water supply means, there is a possibility that there will be dirt remaining without obtaining a sufficient cleaning flow rate. According to the present invention, it is possible to secure a sufficient cleaning flow rate by forcibly washing the filtering means with the water of the bathtub following the washing using the high temperature water, and reliably discharge the dirt remaining in the filtering means to the outside. Can do.
[0013]
The bath water purifier according to claim 3 of the present invention is a waste water for detecting the degree of contamination of the washing waste water in the washing means.
A sensor is provided, and the cleaning water switching control means controls the hot water supplied from the hot water supply means to be switched to the water in the bathtub when the contamination level of the cleaning wastewater detected by the drainage sensor falls below a predetermined value. .
[0014]
When the degree of contamination of the drainage is increased, it is determined that the dissolvable dirt remains, and washing is performed with high-temperature water. In addition, when the degree of contamination of the drainage is reduced, switching to washing with bath water is performed, and the remaining relatively large-diameter dirt is discharged. Therefore, dirt that dissolves at high temperatures is surely discharged, and the cleaning performance of the filtering means is improved.
[0015]
The bath water purifier according to claim 4 of the present invention is such that the temperature of the high-temperature water supplied from the hot water supply means is 60 ° C. or higher.
[0016]
And most of the dirt that is filtered and separated by the filtering means is formed by combining organic substances such as proteins and soap components eluted from the human body, and can be dissolved relatively easily by raising the temperature to 60 ° C or higher. Is possible. Most of the bacteria that grow in the filtering means are mesophilic bacteria, and the inhabitant temperature is 43 ° C. or lower. Furthermore, Legionella spp. Causing Legionella pneumonia, which has become a hot topic in recent years, can inhabit at temperatures below 60 ° C, but can be effectively sterilized at high temperatures above 60 ° C in a few minutes. is there. That is, it is possible to effectively clean and sterilize dirt and pathogenic bacteria in the filtering means.
[0017]
Claims of the invention 5 The bath water purifying apparatus according to the present invention includes a circulation circuit that circulates the filtered water in the bathtub, a forced circulation means that circulates the filtered water provided in the circulation circuit, and electrolyzes suspended substances contained in the filtered water. Aggregating means for agglomerating with the product substance; a filtering means for filtering the agglomeration floc formed on the downstream side of the aggregating means; and passing the water through the filtering means in the opposite direction to the filtration. Cleaning means for cleaning the means, bypass circuit for bypassing the return pipe and return pipe in the vicinity of the tub of the circulation circuit, water temperature control means provided in the circulation circuit, circulation circuit and bypass circuit including filtration means and water temperature control means A closed circuit forming means that constitutes a closed circuit, and operating the water temperature control means in a state where the closed circuit is formed, circulating high temperature water through the filtering means for a predetermined time, and then using the water in the bathtub to filter the filtering means Wash Make With control device Is.
[0018]
Then, the closed circuit forming means forms a closed circuit including the filtering means, and the water temperature control means causes the high temperature water to circulate in the closed circuit before the bath water, so that the dirt substance is dissolved by the washing power of the high temperature water. The Further, it is possible to sterilize and circulate the circulation circuit including the filtering means in which bacteria easily propagate without increasing the water temperature in the bathtub. As a result, the filtering means and the circulation circuit can be cleaned together.
[0019]
Claims of the invention 6 The bath water purifying apparatus according to the present invention comprises a bathing time zone setting means and a clogging detection means for the filtering means, and when the clogging of the filtering means is detected during the bathing time zone, the washing water switching control means uses the hot water supply means. After the filtering means is washed with the high-temperature water supplied from the hot water for a predetermined time, the heating part of the hot water supply means is stopped and washed with the low-temperature water for a predetermined time.
[0020]
Then, it is determined that the bathing time zone is set by the bathing time zone setting means, and the washing water switching control means secures the washing water from the hot water supply means, so that the filtering means can be used without lowering the water level of the bath water during bathing. Can be washed. Therefore, comfortable bathing is realized.
[0021]
Claims of the invention 7 The bath water purifying apparatus according to the present invention includes a cleaning liquid supply means for supplying a cleaning liquid into the filtering means, and supplies the cleaning liquid into the filtering means before the filtering means is cleaned.
[0022]
When the cleaning liquid is sent into the filtering means, the dirt that has been separated by filtration and deposited in the filtering means is peeled and dissolved by the surface active force of the cleaning liquid. Therefore, the dirt that adhered firmly
Even so, the cleaning rate can be improved by utilizing the cleaning action of the cleaning liquid.
[0023]
Claims of the invention 8 The bath water purifying apparatus according to the invention is provided with a bathing time zone setting means, and the filtering means is washed before and after the bathing time zone.
[0024]
The filtering means is reliably washed before and after bathing by the bathing time zone setting means. Therefore, the purification performance at the time of bathing can be ensured without the flow rate decreasing due to clogging of the filtering means at the time of bathing. Further, since the dirt filtered and separated after bathing is not deposited in the filtering means, nutrients that cause the growth of bacteria can be removed, and the growth of bacteria in the filtering means can be reduced.
[0025]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0026]
Example 1
FIG. 1 is a schematic configuration diagram illustrating a filtering operation state of the water purification device according to the first embodiment of the present invention, and FIG. 2 is a schematic explanatory diagram illustrating a cleaning operation state of the water purification device. FIG. 3 is a sequence diagram showing the filtration / cleaning operation when the bathing time zone is set. 1-2, 17 is a circulation pump which is a forced circulation means which circulates the water in the bathtub 18, and 19 is a circulation circuit. Reference numeral 20 denotes a filtering means provided in the circulation circuit 19, and includes a housing 20a, a granular filter medium 20b filled therein, and a filter bed 20c that supports the granular filter medium 20b. An aggregating means 21 is provided in the filtering means 20 on the upstream side of the particulate filter medium 20b, and is composed of a positive electrode 21a made of aluminum, a negative electrode 21b made of stainless steel, and a power source 21c energizing between the electrodes. A water temperature control means 22 is provided in the circulation circuit 19 and controls the temperature of the circulating water, and is composed of an electric heater 22a and a thermistor 22b. 23 is a sterilizing means provided in the circulation circuit 19 for sterilizing bacteria contained in the circulating water. A first flow path switching valve (electric three-way valve) 24 is provided so as to be connected to the forward side of the circulation pump 17, the upstream side of the filtering means 20, and the drain pipe 25. A second flow path switching valve (electric three-way valve) 26 is provided to connect the downstream side of the filtering means 20, the return side to the bathtub 18, and the discharge side of the circulation pump 17. The washing backwashing means of the filtering means 20 includes a circulation pump 17, a part of the circulation circuit 19, a first flow path switching means 24, a second flow path switching means 26, and a drain pipe 25. Reference numeral 27 denotes a hot water supply means including a water supply pipe connection port 27a, a gas burner 27b, a heat exchanger 27c, a hot water supply temperature control unit 27d (not shown), a hot water supply pipe 27e, a two-way valve 27f, and a check valve 27g. , Connected to the circulation circuit 19 between the downstream side of the filtering means 20 and the second flow path switching valve 26. A cleaning liquid supply unit 28 includes a cleaning liquid storage tank 28a, a liquid supply pump 28b, a check valve 28c, and a liquid supply pipe 28d, and is connected to the filtering unit 20. 29 is a water level detection means for detecting the water level in the bathtub 18 and is provided in the vicinity of the bathtub 18 side of the circulation circuit 19. Reference numeral 30 denotes a flow rate detection sensor which is a clogging detection means provided in the circulation circuit 19. 31 is a bathing time zone setting means for setting a bathing time zone. Reference numeral 32 denotes a controller that controls operations of the above-described components.
[0027]
Next, the operation and action during filtration will be described with reference to FIG. The controller 32 causes the first flow path switching valve 24 to communicate with the circulation pump 17 and the aggregation means 21, and the second flow path switching valve 26 switches the discharge side of the bathtub 18 to the filtration means 20 to communicate with the circulation pump 17. Works. When the circulation pump 17 operates, the water in the bathtub 18 circulates in the circulation circuit 19 as indicated by the solid arrow. At the same time, the aggregating means 21 operates, that is, a current flows between the positive electrode 21a and the negative electrode 21b by the power source 21c, and aluminum ions are eluted from the positive electrode 21a. When the aluminum ions are eluted, a chemical reaction with water is formed to form aluminum hydroxide that is electrically positively charged. In addition, since the circulating water contains suspended substances that are electrically negatively charged, they are electrically adsorbed to increase in size and form aggregated flocs having a diameter of several tens of microns. The formed flocs flocs flowed downstream and filled in the filtering means 20
The suspended matter is removed (clarified) by filtration through the filter medium 20 b and returned to the bathtub 18. When returning to the bathtub 18, the controller 32 heats the bathtub 18 with the electric heater 22 a so that the inside of the bathtub 18 reaches a predetermined temperature by the water temperature control means 22, and the sterilization means 23 also operates to sterilize the circulating water. Has been. If this state is continued, the circulating water is clarified, but the aggregated flocs are separated by filtration and gradually deposited above the filter medium layer formed by the granular filter medium 20b in the filter means 20, The water flow resistance of the filtering means 20 increases and the circulation flow rate decreases.
[0028]
Next, the operation and action of the filtering means 20 during cleaning will be described with reference to FIG. When the circulating flow rate decreases and the signal detected by the flow rate sensor, which is the flow rate detection means 30, falls below a predetermined value, the controller 32 causes the first flow path switching valve 24 to communicate with the drain pipe 25 and the second flow path. The switching valve 26 is switched to the closed state, the cleaning liquid supply means 28 operates, and the liquid feeding pump 28b injects a predetermined amount of the cleaning liquid from the cleaning liquid storage tank 28a into the filtering means 20 through the liquid feeding pipe 28d. When the cleaning liquid is injected, the particulate filter medium 20a, the filter bed 20b, and the dirt firmly adhering to the inner surface of the housing 20a filled in the filtering means 20 are peeled, dissolved, and dispersed by the surface active action of the cleaning liquid. It becomes like this.
[0029]
When the cleaning liquid is further sent into the filtering means 20 and a predetermined time elapses, the controller 32 opens the two-way valve 27f of the hot water supply means 27 and tap water flows from the water supply pipe connection port 27a. At the same time, the gas burner 27b burns and the tap water is received by passing water through the heat exchanger 27c. At this time, the water sent to the hot water supply pipe 27e by the hot water supply temperature control unit 27d is 60 ° C. or higher. Further, the high temperature water (water of 60 ° C. or higher) sent to the hot water supply pipe 27e flows in from the lower part of the filtering means 20 as indicated by the broken line arrow, and the granular filter medium 20b filled in the filtering means 20 is slightly added. It flows backward to raise. If it becomes like this, the bridge | crosslinking effect | action of the aggregation floc deposited on the granular filter medium 20b will fall, and an aggregation floc will become weak. At this time, the bacteria propagated in the filtering means 20 are sterilized by high-temperature water and die. Further, the high-temperature water that has cleaned the inside of the filtering means 20 floats relatively small dirt and discharges it from the drain pipe 25 to the outside.
[0030]
Further, when the cleaning with the high temperature water elapses for a predetermined time, the controller 32 causes the first flow path switching valve 24 to communicate with the drain pipe 25 and the second flow path switching valve 26 to connect the discharge side of the circulation pump 17 and the filtering means. 20 is switched to the communication state, and the circulation pump 17 operates. When the circulation pump 17 operates, the water in the bathtub 18 passes through a part of the circulation circuit 19, the circulation pump 17, and the second flow path switching valve 26, as indicated by the solid line arrow, from the downstream side of the filtering means 20. The particulate filter medium 20b that has flowed in and filled in the filtering means 20 flows back while being floated and stirred. In this case, in the filtering means 20, dirt such as agglomerated floc dissolved and dispersed by the cleaning liquid and high-temperature water flows upward together with the water flow, passes through the first flow path switching valve 24 and the drain pipe 25, and is discharged to the outside. Will come to be. The cleaning flow rate is controlled to be larger than when cleaning with high temperature water. If this washing operation is performed for a predetermined time, the controller 32 controls the filtration operation again.
[0031]
Next, with reference to FIG. 3, the setting of the daily filtration / washing and bathing time zone will be described. When the bathing time is approaching while the bathing time zone setting means 31 is performing the circulation filtering operation, the controller 31 automatically performs the washing so that the bathing time is automatically reached, and when the bathing time is over, the controller 31 automatically performs washing. In this way, the controller 32 controls. Further, if the circulating flow rate decreases during the bathing set time and the signal detected by the flow rate sensor, which is the flow rate detection means 30, falls below a predetermined value, the cleaning operation by the cleaning liquid supply means 28 and the high temperature in the hot water supply means 27 as described above. A cleaning operation using water is performed. Thereafter, the gas burner 27b of the hot water supply means 27 is stopped, low-temperature water flows into the filtration means 20, and is washed with low-temperature water, and dirt remaining inside is removed from the filtration means 20 to the outside. Discharged. At this time, the hot water supply temperature control unit 27d is controlled so that the flow rate of the washing water increases.
Therefore, the filtering means 20 can be washed cleanly.
[0032]
As described above, this embodiment has the following effects.
[0033]
(1) When cleaning the filtration means, the cleaning liquid is first supplied into the filtration means, and the dirt components are dissolved and dispersed by washing with high-temperature water. By doing so, it can be washed easily and cleanly. In addition, after supplying cleaning water, high temperature water and bath water are passed in reverse directions, so that the cleaning liquid in the filtering means can be automatically discharged.
[0034]
(2) Since the clogging of the filtration means 20 is detected by the flow rate detection means 30 which is a clogging detection means and the filtration means 20 is automatically washed, the user can use the apparatus without washing the filtration means 20. improves.
[0035]
(3) Since the aggregation means 21 is provided, rapid purification performance can be ensured.
[0036]
(4) When the bathing time zone is set, the filtering means 20 is automatically washed before and after the bathing time, and the clogging of the device and the growth of bacteria can be reduced.
[0037]
(Example 2)
In FIG. 4, reference numeral 33 denotes a drainage sensor that detects the degree of contamination of the cleaning drainage provided in the drain pipe 25. Reference numeral 34 denotes a controller that includes the control of the washing water switching control means based on the signal detected by the drainage sensor 33. Others are the same as in the first embodiment.
[0038]
The operation and action of the filtering means 20 during cleaning will be described with reference to FIG. When the circulating flow rate decreases and the signal detected by the flow rate sensor, which is the flow rate detection means 30, falls below a predetermined value, the controller 34 causes the first flow path switching valve 24 to communicate the drain pipe 25 and the second flow path. The switching valve 26 is switched to the closed state, the cleaning liquid supply means 28 is operated, and the liquid feeding pump 28b injects a predetermined amount of the cleaning liquid from the cleaning liquid storage tank 28a into the filtering means 20 through the liquid feeding pipe 28d. When the cleaning liquid is injected, the particulate filter medium 20b, the filter bed 20c, and the dirt firmly attached to the inner surface of the housing 20a filled in the filtering means 20 are peeled, dissolved, and dispersed by the surface active action. Become.
[0039]
When the cleaning liquid is further sent into the filtering means 20 and a predetermined time elapses, the controller 34 opens the two-way valve 27f of the hot water supply means 27 and tap water flows from the water supply pipe connection port 27a. At the same time, the gas burner 27b burns and the tap water is received by passing water through the heat exchanger 27c. At this time, water supplied to the hot water supply pipe 27e by the hot water supply temperature control unit 27d is set to 60 ° C. or higher. Further, the high temperature water (water of 60 ° C. or higher) sent to the hot water supply pipe 27e flows in from the lower part of the filtering means 20 as indicated by the broken line arrow, and the granular filter medium 20b filled in the filtering means 20 is slightly added. It flows backward to raise. If it becomes like this, the bridge | crosslinking effect | action of the aggregation floc deposited on the granular filter medium 20b will fall, and an aggregation floc will become weak. At this time, the bacteria propagated in the filtering means 20 are sterilized by high-temperature water and die. Further, the high-temperature water that has cleaned the inside of the filtering means 20 discharges relatively small dirt from the drain pipe 25 to the outside. When this state is continued, small dirt is discharged and dirt dissolved in high-temperature water is dissolved and discharged, and the degree of turbidity of drainage dirt is reduced. At this time, the turbidity of the dirt detected by the drainage sensor 33 provided in the drainage pipe 25 is reduced, and if it becomes a predetermined value or less, the controller 34 causes the first flow path switching valve 24 to communicate with the drainage pipe 25 and the second The flow path switching valve 26 switches the discharge side of the circulation pump 17 and the filtering means 20 to the communication state, and the circulation pump 17 operates. When the circulation pump 17 operates, the water in the bathtub 18 passes through a part of the circulation circuit 19, the circulation pump 17, and the second flow path switching valve 26, as indicated by the solid line arrow, from the downstream side of the filtering means 20. The particulate filter medium 20b that has flowed in and filled in the filtering means 20 flows back while being floated and stirred. If it becomes like this, in the filtration means 20, it will be decomposed | disassembled and melted downsized with a washing | cleaning liquid and hot water
Dirt such as agglomerated flocs flows upward along with the water flow, passes through the first flow path switching valve 24 and the drain pipe 25, and is discharged to the outside. The cleaning flow rate is controlled to be larger than when cleaning with high temperature water. If this washing operation is performed for a predetermined time, the controller 34 controls the filtration operation again. The operation at the time of filtration and the operation at the time of setting the bathing time are the same as those in the first embodiment and will be omitted.
[0040]
Example 3
FIG. 5 is a schematic explanatory view showing a cleaning operation state of the water purification apparatus. In FIG. 5, reference numeral 35 denotes a heating means provided in the filtering means 20 and is composed of an electric heater 35a and a thermostat 35b. A controller 36 includes control of the heating means 35. Others are the same as in the first embodiment.
[0041]
The operation and action of the filtering means 20 during cleaning will be described with reference to FIG. When the circulating flow rate decreases and the signal detected by the flow rate sensor, which is the flow rate detection means 30, falls below a predetermined value, the controller 36 causes the first flow path switching valve 24 to communicate with the drain pipe 25 and the second flow path. The switching valve 26 is switched to the closed state, the cleaning liquid supply means 28 is operated, and the liquid feeding pump 28b injects a predetermined amount of the cleaning liquid from the cleaning liquid storage tank 28a into the filtering means 20 through the liquid feeding pipe 28d. When the cleaning liquid is injected, the particulate filter medium 20b, the filter bed 20c, and the dirt firmly attached to the inner surface of the housing 20a filled in the filtering means 20 are peeled, dissolved, and dispersed by the cleaning liquid component. .
[0042]
When the cleaning liquid is further sent into the filtering means 20 and a predetermined time elapses, the controller 36 energizes the electric heater of the heating means 35 and heats the inside of the filtering means 20 to a predetermined temperature. If it becomes like this, a convection will arise in the filtration means 20, and the film-like thing of the aggregation floc deposited on the granular filter medium 20a will be destroyed, and an aggregation floc will become weak. At this time, the bacteria propagated in the filtering means 20 are sterilized by heat and killed. When the inside of the filtering means 20 is heated at a predetermined temperature for a predetermined time, the controller 36 causes the first flow path switching valve 24 to communicate with the drain pipe 25 and the second flow path switching valve 26 to be connected to the discharge side of the circulation pump 17. The filtration means 20 is switched to the communication state, and the circulation pump 17 operates. When the circulation pump 17 operates, the water in the bathtub 18 passes through a part of the circulation circuit 19, the circulation pump 17, and the second flow path switching valve 26, as indicated by the solid line arrow, from the downstream side of the filtering means 20. The particulate filter medium 20b that has flowed in and filled in the filtering means 20 flows back while being floated and stirred. In this case, in the filtering means 20, dirt such as a cleaning floc and flocs flocs separated, dissolved and dispersed by high-temperature heating flows upward together with the water flow, passes through the first flow path switching valve 24 and the drain pipe 25, Will be discharged. If this washing operation is performed for a predetermined time, the controller 36 controls to perform the filtration operation again. The operation at the time of filtration and the operation at the time of setting the bathing time are the same as those in the first embodiment and will be omitted.
[0043]
As described above, this embodiment has the following effects.
[0044]
(1) Since the filtration means 20 is maintained at a high temperature for a predetermined time when it is washed, even if bacteria propagate in the filtration means 20, it is heated and sterilized. Thus, there is no bacteriological contamination and the user can use it with peace of mind.
[0045]
(2) Since the inside of the filtration means 20 is heated to a high temperature, the filtration means 20 is washed with bath water, so the high temperature water is discharged to the outside. Therefore, it is safe because hot water does not flow into the bathtub 18 even if the filtration operation is continued.
[0046]
(Example 4)
FIG. 6 is a schematic explanatory view showing a high-temperature circulation state of the water purification apparatus. In FIG. 6, reference numerals 37 and 38 denote closed circuit constituting means provided on the discharge side and the suction side of the bathtub 18 of the circulation circuit 19, respectively.
A third flow path switching valve and a fourth flow path switching valve; Reference numeral 39 denotes a bypass pipe that connects the third flow path switching valve 37 and the fourth flow path switching valve 38. Others are the same as in the first embodiment.
[0047]
The operation and action of the filtering means 20 during cleaning will be described with reference to FIG. When the circulating flow rate decreases and the signal detected by the flow rate sensor, which is the flow rate detection means 30, falls below a predetermined value, the controller 40 causes the first flow path switching valve 24 to communicate the drain pipe 25 and the second flow path. The switching valve 26 is switched to the closed state, the cleaning liquid supply means 28 is operated, and the liquid feeding pump 28b injects a predetermined amount of the cleaning liquid from the cleaning liquid storage tank 28a into the filtering means 20 through the liquid feeding pipe 28d. When the cleaning liquid is injected, the particulate filter medium 20b, the filter bed 20c, and the dirt firmly attached to the inner surface of the housing 20a filled in the filtering means 20 are peeled, dissolved, and decomposed by the cleaning liquid component. .
[0048]
When the cleaning liquid is further sent into the filtering means 20 and a predetermined time elapses, the controller 40 causes the first flow path switching valve 24 to communicate with the circulation pump 17 and the aggregating means 21, and the second flow path switching valve 26 is set to the bathtub. 18 is connected to the filtering means 20, the third flow switching valve 37 is connected to the second flow switching valve 26 and the bypass pipe 39, and the suction side of the fourth flow switching valve 38 is connected to the bypass pipe 39. Is switched to a state of communicating with each other, and the circulation pump 17 operates to circulate water as indicated by solid arrows. Further, the electric heater 22a of the water temperature control means 22 is energized, and the closed circuit formed by the filtering means 20, the circulation circuit 19 and the bypass circuit 39 is heated to a predetermined temperature. If it becomes like this, the stain | pollution | contamination and the aggregation floc which have accumulated and adhered in the circulation circuit 19 and the filtration means 20 will be melt | dissolved and disperse | distributed. At this time, the bacteria propagated in the circulation circuit 19 and the filtering means 20 are heated and killed. Further, if the inside of the filtering means 20 is heated at a predetermined temperature for a predetermined time, the controller 40 causes the first flow path switching valve 24 to communicate with the drain pipe 25 and the second flow path switching valve 26 to the discharge side of the circulation pump 17. And the filtering means 20 are communicated, the bypass pipe 39 side of each of the third flow path switching valve 37 and the fourth flow path switching valve 38 is switched to the closed state, and the circulation pump 17 operates. When the circulation pump 17 operates, the water in the bathtub 18 passes through a part of the circulation circuit 19, the circulation pump 17, and the second flow path switching valve 26, flows in from the downstream side of the filtering means 20, and enters the filtering means 20. The filled granular filter medium 20b flows backward while floating. In this case, in the filtering means 20, dirt such as the flocs flocs separated, dissolved, and dispersed by heating during the high-temperature circulation flows upward together with the water flow, and passes through the first flow path switching valve 24 and the drain pipe 25. Then it will be discharged to the outside. If this washing operation is performed for a predetermined time, the controller 40 controls the filtration operation again. The operation at the time of filtration and the operation at the time of setting the bathing time are the same as those in the first embodiment and will be omitted.
[0049]
As described above, this embodiment has the following effects.
[0050]
(1) By circulating high-temperature water in the circulation circuit 19, cleaning and high-temperature sterilization in the circulation circuit 19 can be performed. Therefore, the inside of the circulation circuit 19 can be maintained in a bacteriologically safe state.
[0051]
(2) By circulating high temperature water, dissolution and cleaning in the filtering means 20 and the circulation circuit 19 can be performed simultaneously.
[0052]
(3) The water temperature control means 22 provided in the circulation circuit 19 can be used not only for keeping the circulating temperature of the bath water, but also when circulating at a high temperature.
[0053]
【The invention's effect】
As described above, in the bath water purifying apparatus according to claim 1 of the present invention, when washing the filtering means, the hot water supplied from the hot water supply means is first washed using the bath water. As a result, the dirt deposited by filtration in the filtering means is discharged to the outside. That is, the high temperature water supplied from the hot water supply means is used prior to the bath water to dissolve and wash the dirt firmly adhered in the filtering means, and the agglomerated dirt is weakened and dispersed to facilitate discharge. it can. Further in the filtering means
Propagated pathogens can be sterilized and washed. Therefore, it is possible to improve the cleaning performance of the filtering means without degrading the purification performance of the filtering means.
[0054]
In the bath water purifying apparatus according to claim 2, since the filtering means is washed for a predetermined time with high-temperature water supplied from the hot water supply means and then washed for a predetermined time using bath water, it adheres firmly to the filtering means. It is possible to dissolve and agglomerate the soil, and to make the soil that has become larger by making it fragile, and further dissolve and disperse it. Furthermore, by using bath water, it is possible to ensure an optimum cleaning flow rate and perform cleaning. That is, after making it easy to discharge the dirt, the dirt can be reliably discharged by washing at an appropriate flow rate.
[0055]
Further, the bath water purifying apparatus according to claim 3 is provided with a drainage sensor for detecting the degree of contamination of the cleaning wastewater in the cleaning means, and if the degree of contamination of the cleaning drainage detected by the drainage sensor becomes a predetermined value or less, Control to switch the hot water supplied from the hot water supply means to the water in the bathtub with the switching control means
Moreover, since the bath water purifying apparatus according to claim 4 raises the temperature of the high-temperature water to 60 ° C. or higher, it efficiently removes metal soap components and pathogenic bacteria in which organic substances such as proteins and dirt that are accumulated in the filtering means are combined with soap components. Can be dissolved, dispersed and killed.
[0056]
Claims 5 The bath water purifying apparatus according to the present invention forms a closed circuit in the circulation circuit including the filtering means by the closed circuit constituting means, and circulates the high temperature water by the water temperature control means, so that the bacteria can be raised without increasing the water temperature in the bathtub. The circulation circuit including the filtering means that easily propagates can be sterilized and washed. Further, since the high-temperature water is circulated in the closed circuit by the water temperature control means prior to the bath water, it is possible to dissolve and disperse the contaminated substances due to the cleaning power of the high-temperature water. That is, it is easy to discharge dirt in the filtering means, so that the cleaning efficiency can be improved, and the filtering means and the circulation circuit can be cleaned together.
[0057]
Claims 6 When the bath water purifying apparatus according to the present invention is in the bathing setting time zone, it is possible to secure an appropriate water level at any time by securing washing water from the hot water supply means, and comfortable bathing is realized. Also, the cleaning performance can be secured by changing the cleaning temperature.
[0058]
Claims 7 The bath water purifier according to the present invention can easily clean the dirt firmly adhered in the filtering means by the surface active action of the cleaning liquid by supplying the cleaning liquid into the filtering means prior to the cleaning of the filtering means. It is possible to improve the cleanability of the filtering means.
[0059]
Claims 8 The bath water purifier according to the above can clean the filtration means before and after the bathing set time period, thereby preventing a decrease in the circulation flow rate due to clogging of the filtration means during bathing and ensuring purification performance at the time of bathing can do. Moreover, after bathing, the dirt which is a nutrient source of bacteria is surely discharged, and the propagation of bacteria can be reduced.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing a filtering operation state of a water purification device according to a first embodiment of the present invention.
FIG. 2 is a schematic explanatory view showing a cleaning operation state of the water purification apparatus.
FIG. 3 is a sequence diagram showing filtration and cleaning operations of the water purification apparatus.
FIG. 4 is a schematic explanatory view showing aggregating means and a cleaning operation state in Embodiment 2 of the present invention.
FIG. 5 is a schematic explanatory view showing the configuration of the filtering means in Embodiment 3 of the present invention.
FIG. 6 is a schematic explanatory view showing a high-temperature circulation state of a water purification apparatus in Embodiment 4 of the present invention.
FIG. 7 is a schematic configuration diagram of a conventional water purification device.
[Explanation of symbols]
17 Circulation pump
18 Bathtub
19 Circulation circuit
20 Filtration means
20b Granular filter media
21 Aggregation means
21a positive electrode
21b Cathode
21c power supply
22 Water temperature control means
22a Electric heater
22b thermistor
24 First flow path switching valve
26 Second flow path switching valve
27 Hot water supply means
27b Gas burner
27c heat exchanger
27d Hot water temperature controller
27e Hot water supply pipe
28 Cleaning liquid supply means
28a Cleaning liquid storage tank
28b Liquid feed pump
28d Liquid feeding pipe
29 Water level detection means
30 Clogging detection means
31 Bathing time zone setting means
32, 34, 36 controller
33 Drainage sensor
35 Heating means
35a Electric heater
35b thermistor
37 Third flow path switching valve
38 Fourth flow path switching valve
39 Bypass pipe

Claims

A circulation circuit that circulates the water to be filtered in the bathtub, a forced circulation means that circulates the water to be filtered provided in the circulation circuit, and a coagulation means that aggregates suspended substances contained in the water to be filtered with an electrolysis product. A filtering unit that is provided downstream of the aggregating unit and that filters aggregated flocs formed by the aggregating unit; and a cleaning unit that passes the water through the filtering unit in a direction opposite to that during filtration to wash the filtering unit; a hot water supply means connected to said circulation circuit, the wash water when cleaning the filtration unit, the hot water supplied from the hot water supply unit earlier, the washing water switching control means then obtain switched to water bath Equipped with a bath water purification device.

2. The bath water purifier according to claim 1, wherein the washing water switching control means is controlled so that the filtering means is washed for a predetermined time with hot water supplied from the hot water supply means and then washed with the water in the bathtub.

The cleaning means is provided with a drainage sensor for detecting the degree of contamination of the cleaning wastewater, and when the degree of contamination of the cleaning wastewater detected by the drainage sensor becomes a predetermined value or less, hot water supplied from the hot water supply means by the cleaning water switching control means is used in the bathtub. The bath water purifier according to claim 1, which is controlled so as to switch to the water inside.

The bath water purifier according to claim 1, wherein the temperature of the high-temperature water supplied from the hot water supply means is 60 ° C or higher.

A circulation circuit that circulates the water to be filtered in the bathtub, a forced circulation means that circulates the water to be filtered provided in the circulation circuit, and a coagulation means that aggregates suspended substances contained in the water to be filtered with an electrolysis product. A filtering unit that is provided downstream of the aggregating unit and that filters aggregated flocs formed by the aggregating unit; and a cleaning unit that passes the water through the filtering unit in a direction opposite to that during filtration to wash the filtering unit; A bypass circuit that bypasses the forward pipe and the return pipe in the vicinity of the bathtub of the circulation circuit, a water temperature control means provided in the circulation circuit, a filtration means and the circulation circuit including the water temperature control means, and a closed circuit in the bypass circuit comprising a closed circuit forming means constituting, by operating the water temperature control means in a state of forming a closed circuit, after the hot water predetermined time circulates, having a control device for cleaning with water the bath the filtering means Bath water purification equipment.

It is provided with a bathing time zone setting means and a clogging detection means for the filtering means, and when clogging of the filtering means is detected during the bathing time zone, it is filtered with hot water supplied from the hot water supply means by the washing water switching control means. The bath water purifier according to claim 1, wherein after the means is washed for a predetermined time, the heating portion of the hot water supply means is stopped and washed with low temperature water for a predetermined time.

The bath water purifier according to any one of claims 1 to 6 , further comprising a cleaning liquid supplying means for supplying a cleaning liquid into the filtering means, wherein the cleaning liquid is supplied into the filtering means before the filtering means is cleaned.

The bath hydrating apparatus according to any one of claims 1 to 7, further comprising a bathing time zone setting means, wherein the filtering means is washed before and after the bathing time zone.