JP2005007347A - Electrodialysis type water purifier - Google Patents

Electrodialysis type water purifier Download PDF

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Publication number
JP2005007347A
JP2005007347A JP2003176510A JP2003176510A JP2005007347A JP 2005007347 A JP2005007347 A JP 2005007347A JP 2003176510 A JP2003176510 A JP 2003176510A JP 2003176510 A JP2003176510 A JP 2003176510A JP 2005007347 A JP2005007347 A JP 2005007347A
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JP
Japan
Prior art keywords
water
electrodialysis
storage tank
tank
soft
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Pending
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JP2003176510A
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Japanese (ja)
Inventor
Kazuyuki Hamada
和幸 濱田
Hiroko Ishii
裕子 石井
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2003176510A priority Critical patent/JP2005007347A/en
Publication of JP2005007347A publication Critical patent/JP2005007347A/en
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  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water purifier which purifies city water to generate water of high quality, and to realize the reduction in cost and the amount of the water to be exhausted. <P>SOLUTION: The water purifier consists of: a conduit 78 connected to city water; a filter 22 and a hollow fiber filter 23 installed in the middle of the piping; a purified water discharge pipe 30 which discharges purified water from the secondary side of a soft water means A; a control means 100 of driving and stopping the soft water means A; and an operating means 110 of operating the driving and stopping of the soft water means. By using a liquid supply pump 71 provided on a circulation channel 70 and a drain pipe fitted to an electrodialysis tank 72, the electrodialysis tank 72 can be made smaller, the cost can be lowered, and the amount of the water to be exhausted can be reduced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、電気透析槽により水道水を浄化して軟水を溜める電気透析式浄水器に関するものである。
【0002】
【従来の技術】
近年、水道水を浄化してより良質の飲料水を得るため、各種の浄水器が市販されており、この種の浄水器の一つとして、逆浸透膜製のフィルタを用いた逆浸透膜浄水器があり、浄水により生じた排水を回収して有効利用した逆浸透膜浄水器がある(例えば特許文献1参照。)。
【0003】
以下、図面を参照しながら上記従来の逆浸透膜浄水器を説明する。
【0004】
図8は、従来の噴水式の逆浸透膜浄水器の縦断面図である。図8に示すように、従来の逆浸透膜浄水器は、主に流し場カウンターの下に逆浸透膜浄水器を設置した場合の排水利用装置である。
【0005】
台所に引き込まれた水道管11と、逆浸透膜、カーボンフィルターで水道水を浄化し、貯水する逆浸透膜方式浄水器12と、逆浸透膜方式浄水器12内の浄水を取り出す浄化水用蛇口13と、浄化水用蛇口13と逆浸透膜方式浄水器12を連結する連結管14と、逆浸透膜方式浄水器12から排出する排水を通すため、逆浸透膜方式浄水器12上部近傍と排水用貯水タンク16の上部近傍を連結する排水排出管15と、逆浸透膜方式浄水器12から排出する廃水を溜めておく廃水用貯水タンク16と、廃水用貯水タンク16の上部近傍でかつ排水排出管15の取付個所よりやや下部と排水用配管26を連結する。
【0006】
オーバフロー用排水管17と、廃水用貯水タンク16の下部近傍とポンプ19を連結する連結管18と、廃水を取り出す蛇口21と、蛇口21とポンプ19を連結する連結管22と、連結管22と排水用配管26が貫通する洗槽25とから構成されている。
【0007】
以上のように構成された逆浸透膜浄水器について、以下その動作を説明する。
【0008】
逆浸透膜方式浄水器12で水道水が浄化され、浄化水用蛇口13から飲料用等に使用される。また、逆浸透膜方式浄水器12で水道水が浄化されている間、逆浸透膜方式浄水器12から廃水も同時に排出されるが、この廃水は廃水排出管15を通って廃水用貯水タンク16に溜められる。この廃水用貯水タンク16の中の廃水は、必要時にポンプ19を作動させて連結管22を経て廃水用の蛇口21に送られ、飲料以外の例えば食器洗い用の水として利用される。
【0009】
廃水用貯水タンク16内の廃水が多くなりすぎた時は、オーバフロー用排水管17から台所の排水用配管26を経て廃棄される。
【0010】
【特許文献1】
特開平9−29250号公報
【0011】
【発明が解決しようとする課題】
しかしながら、上記従来の逆浸透膜浄水器は、逆浸透膜を使用することから、コストが高くなるという欠点があった。
【0012】
また、上記従来の逆浸透膜浄水器は、逆浸透膜を使用することから、一般に40%から80%の排水が生じるという欠点があった。
【0013】
本発明は従来の課題を解決するもので、浄水手段として電気透析槽を用いることで、低コストでかつ排水量の少ない浄水器を提供することを目的とする。
【0014】
【課題を解決するための手段】
請求項1に記載の発明は、市水を浄化して良質な水を生成する浄水器において、水道に連結された導管と、前記導管が連結された軟水手段と、前記軟水手段の二次側から浄水を取り出す浄水取出管と、前記軟水手段を運転、停止させる制御手段と、前記軟水手段の運転、停止を操作する操作手段とからなり、前記軟水手段は、貯水タンクと、前記貯水タンクに付設された循環経路と、前記循環経路内に設けられた送液ポンプと、前記循環経路内に設けられた電気透析槽と、前記電気透析槽に付設された排水管で構成したものであり、前記貯水タンク内の市水を前記循環経路に設置された前記電気透析槽で徐々に軟水するという作用を有する。
【0015】
また、請求項2に記載の発明は、請求項1に記載の発明において、貯水タンクは、前記貯水タンク下部に設けられ市水が流入する給水口と、前記貯水タンク上部に内部に設けられ浄水を浄水取出管供給する取出口とからなり、前記貯水タンク内部に前記給水口と前記取出口を2つの空間に隔てるように混合防止部材を構成したことで、前記貯水タンク内に流入する市水と貯水されていた浄水が混ざらないという作用を有する。
【0016】
また、請求項3に記載の発明は、請求項1または請求項2に記載の発明において、混合防止部材は、給水口近傍と取出口近傍の間を移動可能にしたものであり、水道圧により混合防止部材が上下に移動するという作用を有する。
【0017】
また、請求項4に記載の発明は、請求項1から請求項3に記載の発明において、混合防止部材の外周近傍にシール部材を具備したものであり、前記貯水タンク内に流入する市水と貯水されていた浄水が混ざらないという作用を有する。
【0018】
また、請求項5に記載の発明は、請求項1から請求項4に記載の発明において、制御手段は、電気透析槽の運転により生じる電流値が所定置以下となった時、電気透析槽を停止させることとしたので、前記所定の電流値に対応する水硬度では運転を停止するという作用を有する。
【0019】
また、請求項6に記載の発明は、請求項1から請求項5に記載の発明において、制御手段は、電気透析槽の停止時には、前記電気透析槽に所定時間毎に断続的に通電を行い、発生する電流値が所定値以上となった時、前記電気透析槽の運転を開始することとしたので、前記所定の電流値に対応する水硬度で運転を開始するという作用を有する。
【0020】
【発明の実施の形態】
以下、本発明による製氷装置の実施の形態について、図面を参照しながら説明する。なお、従来と同一構成については、同一符号を付してその詳細な説明を省略する。
【0021】
(実施の形態1)
図1は、本発明による実施例の形態1の電気透析式浄水器の装置の一例を示す構成図である。図2は、本発明による実施例の形態1の貯水タンクの構成図である。図3は、本発明による実施例の形態1の混合防止部材の側面図である。図4は、本発明による実施例の形態1の混合防止部材の正面図である。図5は、本発明による実施例の形態1の電気透析槽を流れる電流値と水硬度の関係を示した特性図である。図6は、本発明による実施例の形態1の軟水動作時の動作図である。図7は、本発明による実施例の蛇口開放時の動作図である。
【0022】
図1において、第1貯水タンク10は、水道に連結された給水配管系20と、浄水取出配管系30と、排水配管系40が接続されている。給水配管系20は、主に逆止付減圧弁21と、第1フィルター22と、第2フィルター23とから構成され、導管としては、水道と逆止付減圧弁21を連結する導管24と、逆止付減圧弁21の二次側と第1フィルター22の入口を結ぶ導管25と、第1フィルター22の出口と第2フィルー23の入口を連結する導管26と、第2フィルター23の出口と第1貯水タンク10の上部近傍に設けられた給水口28を連結する導管27がある。
【0023】
ここで、第1フィルター22は、市水中に含まれる浮遊物を除去するために設置するもので、内部にメッシュ構造の炉材が充填されている。次に、第2フィルター23は、市水中に含まれる細菌を除去するために設置するもので、例えば、ポリエチレンとポリプロピレンでできたマカロニ状の化学繊維で、壁面に微細な穴が無数に開いた中空糸膜が使用できる。
【0024】
浄水取出配管系30は、蛇口31と、第1貯水タンク10の上部近傍に設けられた取出口33と蛇口31を連結する導管32で構成されている。第1排水系40は、手動の排水バルブ41と、第1貯水タンク10の下部近傍と排水バルブ41を連結する導管42で構成される。
【0025】
次に軟水手段Aは、第1貯水タンク10と第2貯水タンク50を連結する連結配管系60と、第2貯水タンク50と、第2貯水タンク50内の水を軟水化する循環経路70と、軟水供給配管系80と、排水配管系90とで構成されている。
【0026】
連結配管系60は、第1貯水タンク10に付設された逆止弁61と、逆止弁61と第2貯水タンク50の下部近傍に設けられた給水口63を連結する導管62とで構成されており、逆止弁61は第1貯水タンク10から第2貯水タンク50方向に向けてのみ流路を形成するように取り付けられている。
【0027】
循環経路70は、主に循環ポンプ71と、電気透析槽72と、電磁弁73とから構成せれ、導管としては、第2貯水タンクの下部近傍と循環ポンプ71の吸入口とを連結する導管74と、循環ポンプ71の吐出口と電気透析槽72の入口とを連結する導管75と、電気透析槽72の出口と電磁弁73の入口を連結する導管76と、電気透析槽72の排水口と電磁弁77を連結する導管78で構成されている。
【0028】
軟水供給配管系80は、蛇口81と、第2貯水タンク50の上部近傍に設けられた取出口83と蛇口81を連結する導管82で構成されている。排水系は90は、手動の排水バルブ91と、第2貯水タンク50の下部近傍と排水バルブ91を連結する導管92で構成される。
【0029】
図2、図3、図4において、第2貯水タンク50の内部には、混合防止部材51と、ガイドシャフト52が構成されており、ガイドシャフト52は略円筒形状であり、一端は第2貯水タンク50の下部に垂直方向に固定されている。混合防止部材51は、ガイドシャフト52が貫通するボス53と、ボス53に固定された混合防止プレート54と、混合防止プレート54の外周に設けられたシール部材55とで構成されている。
【0030】
混合防止プレート54は、第2貯水タンク50の内壁とほぼ同形状となる形状であり、本実施例では略円形の皿型形状を成しており、2つの開口部56が形成されている。開口部56の下面近傍には開閉蓋57が混合防止プレート54に回動可能に軸支されており、所定のバネ圧(図示せず)で混合防止プレート54に押し付けられている。
【0031】
また、混合防止プレート54の外周と第2貯水タンク50は所定のクリアランスを設けてあり、このクリアランスを埋めるようにシール部材55が全周に取り付けられている。シール部材55の材料としては、可撓性が良く水道法に適合した、軟硬度のシリコンゴムが適している。
【0032】
制御手段100は、循環ポンプ71と電気透析槽72の運転・停止と、電磁弁73及び電磁弁77の開閉を制御するためのものであり、電気透析槽72をON−OFFする電流リレーと、電流リレーの出力を受けて循環ポンプ71をON−OFFさせる電磁接触器と、循環ポンプ71用の電磁接触器の出力を受けて電磁弁73を開閉する電磁弁73用の電磁接触器と、電磁弁77を開閉する電磁接触器が備えられている。
【0033】
操作手段110は、軟水機能のON−OFFを選択する手動切り替えスイッチと、電気透析槽72の運転を表示するランプと、電気透析槽72の運転完了を表示するランプが備えられている。
【0034】
図5は、電気透析槽72への直流電圧の印加により生じる電流値と水の硬度の関係であり、硬度の上昇により電流値が増加している。ここで、第1の硬度は本実施例において目標とする浄水の制御範囲の下限硬度である10相当で、この時に電気透析槽72に生じる電流値が第1の電流値である。
【0035】
また、第2の硬度は本実施例において目標とする浄水の制御範囲の上限硬度である15相当であり、この時に電気透析槽72に生じる電流値が第2の電流値である。
【0036】
以上のように構成された自動製氷装置について、以下その動作を図1、図6、図7を参照して説明する。
【0037】
まず、図1において、水道から供給された市水は給水配管系20を通ることで、第1浄水として第1貯水タンク10に供給される。ここで、第1浄水とは、給水配管系20に構成された第1フィルター22及び第2フィルター23により市水中に含まれる浮遊物及び細菌が除去されたものである。第1貯水タンク10に溜められた第1浄水は蛇口31の開放に伴い、水道圧により浄水取出配管系30を通って浄水装置外へ供給され、主に洗浄用もしくは調理用として使用される。
【0038】
次に、図6において、第1貯水タンク10から連結配管系60を通って第1浄水が第2貯水タンク50に供給される。ここで、電気透析槽72及び循環ポンプ71の運転により、通常閉状態である電磁弁73が開状態となり、第2貯水タンク50に溜められた第1浄水は、電気透析槽72へ送液され再び第2貯水タンク50内に戻される。
【0039】
このように循環回路中に電気透析槽72を形成することで、第2貯水タンク50内の第1浄水は除々にミネラル成分やカルキ成分が除去され第2浄水となる。この時、まず、混合防止部材51は、導管74と第2貯水タンク50の接続部より下方に移動することの無いように構成されており(詳細は図示せず)、混合防止部材51が最下点以外に位置する時は、混合防止部材51は自身の自重により最下点まで移動する。混合防止部材51が最下点に位置する状態において循環ポンプ71が運転した場合、混合防止部材51上部は循環ポンプ71の吐出圧となり、混合防止部材51下部は循環ポンプ71の吸入圧となり、この圧力差により開閉蓋57は開状態となり、開口部56により第2貯水タンク50内に流路が構成される。
【0040】
ここで、操作手段110の手動切り替えスイッチにより軟水機能をOFFとされた場合、循環ポンプ71と電気透析槽72は動作しない。操作手段110の手動切り替えスイッチにより軟水機能をONとされた場合、循環ポンプ71と電気透析槽72と電磁弁73に通電され、第2貯水タンク50内の第1浄水は電気透析槽72により徐々にミネラル成分やカルキ成分が除去されるとともに操作手段110の軟水装置の運転ランプが点灯する。
【0041】
ここで、硬度の低下に伴い電気透析槽72に生じる電流値も次第に低下し、第2貯水タンク50内の水硬度が10相当に達したとき、電気透析槽72に生じる電流値は第1電流値まで低下し、電流リレーにより電気透析槽72と循環ポンプ71と電磁弁73への通電は解除されるとともに、操作手段110の軟水運転ランプが消灯し、軟水運転の完了ランプが点灯する。
【0042】
また、電気透析槽72の濃縮室には、硬度の上昇した水が生成されており、循環ポンプ71の起動後、所定時間経過した後に、電磁弁77に所定時間通電して開放状態として、濃縮室内の高硬度水を排水する。本実施例において、1回目の排水タイミングは、ポンプ71の起動後20分とし、電磁弁77への通電時間を20秒とした。2回目以降の排水については、前回の排水後20分後に電磁弁77に20秒関の通電を実施した。
【0043】
次に、蛇口81が開放されると、水道圧により、混合防止部材51が上方へ押し上げられることで、混合防止部材51上部の軟水は軟水供給配管系80を通って浄水装置外へ放出される。この時、混合防止部材51の効果により、混合防止部材51上下の第1浄水と第2浄水は殆ど混合することはない。
【0044】
また、電磁弁73は非通電で閉状態であることから循環経路70を通り、混合防止部材51の下部の第1浄水が上部へ移動して、混合防止部材51上下の軟水と第1浄水が混合することはなく、浄水装置外へ放出されたミネラル成分やカルキ成分の除去された水は主に飲料用及び調理用に使用される。
【0045】
軟水完了後の制御については、本実施例においては、定期的に所定時間、電気透析槽72のみに通電し、電気透析槽72に生じる電流値が第2電流値より大きくなる場合、このまま継続運転となるように制御したが、この他の手段として、第2貯水タンク50内下部に混合防止部材51との近接スイッチを配置し、混合防止部材51の上昇、つまり蛇口81の開放を検知して、軟水動作を制御する方法も考えられる。
【0046】
以上のように本実施例の形態の電気透析式浄水器は、市水を浄化して良質な水を生成する浄水器において、水道に連結された給水配管系20と、給水配管系20途中に設置された第1フィルター22と、給水配管系20途中に設置された第2フィルター23と、連結配管系60が連結された軟水手段Aと、第2貯水タンク50の二次側から浄水を取り出す軟水供給配管系80と、前記軟水手段Aを運転、停止させる制御手段100と、前記軟水手段Aの運転、停止を操作する操作手段110とから構成され、軟水手段Aを、第2貯水タンク50と、第2貯水タンク50に付設された循環経路70と、循環経路70内に設けられた循環ポンプ71と、循環経路70内に設けられた電気透析槽72と、気透析槽72に付設された排水管77で構成されるようにしたので、小容量の電気透析槽を使用しても第2貯水タンク50内の水を徐々に軟水化できる。
【0047】
さらに、浄水方式として電気透析方式を採用したので、従来の逆浸透膜浄水器に比べて、排水量を低減することができる。
【0048】
さらに、第2貯水タンク50内部に混合防止部材51を構成したので、新たな給水が第2貯水タンク50に行われた場合に、第2貯水タンク50内で第1浄水と第2浄水の混合を抑制することができる。
【0049】
さらに、混合防止部材51を、上下に移動可能にしたので、ポンプ等別付けの装置を必要とせず、水道圧を利用して、第2貯水タンク50内の水を浄水装置外へ送水することができる。
【0050】
さらに、混合防止プレート54の外周にシール部材55を設けたので、混合防止部材51の上下移動の際、第2貯水タンク50内で第1浄水との軟水の混合を抑制することができる。
【0051】
さらに、制御手段100には、電気透析槽72の運転により生じる電流値を検出する電流リレーとこの電流リレーの出力により循環ポンプ71を制御する電磁接触器を設けたので、第2貯水タンク50内の水の硬度が第1硬度以下となった場合、軟水手段Aの運転を自動的に停止できる。
【0052】
さらに、制御手段100は、電気透析槽72の停止時には、電気透析槽72に所定時間毎に断続的に通電を行うようにしたので、第2貯水タンク50内の水の硬度が第2硬度以上となった場合、軟水手段Aの運転を自動的に起動できる。
【0053】
【発明の効果】
以上説明したように請求項1に記載の発明は、電気透析槽を循環経路内に設置して、貯水タンク内の市水を徐々に軟水化するので、電気透析槽の小型化、低コスト化が実現できる。
【0054】
さらに、気透析方式を採用したので、排水量を低減できる。
【0055】
また、請求項2に記載の発明は、請求項1に記載の発明に加えて、貯水タンク内に、混合防止部材を構成したので、軟水処理が完了した第2浄水と新たに流入する第1浄水との混合を防止することができる。
【0056】
また、請求項3に記載の発明は、請求項1または請求項2の発明に加えて、混合防止部材が給水口近傍と取出口近傍の間を移動可能にしたので、給水口にかかる水道圧を用いて貯水タンク内の水を浄水装置外に供給することができる。
【0057】
また、請求項4に記載の発明は、請求項1から請求項3の発明に加えて、混合防止部材の外周近傍にシール部材を具備することで、貯水タンク内壁と前記混合防止部材外周の間の水の移動が略0となるので、軟水処理が完了した水と新たに流入する市水との混合を防止することができる。
【0058】
また、請求項5に記載の発明は、請求項1から請求項4の発明に加えて、電気透析槽の運転により生じる電流値が所定値以下となった時、電気透析槽を停止させるので、浄水器の自動運転が実現できる。
【0059】
また、請求項6に記載の発明は、請求項1から請求項5の発明に加えて、電気透析槽の停止時には、前記電気透析槽に所定時間毎に断続的に通電を行い、発生する電流値が所定値以上となった時、前記電気透析槽の運転を開始するので、浄水器の自動運転が実現できる。
【図面の簡単な説明】
【図1】本発明による電気透析式浄水器の実施の形態1の構成図
【図2】本発明による実施の形態1の貯水タンクの構成図
【図3】本発明による実施の形態1の混合防止部材の側面図
【図4】本発明による実施の形態1の混合防止部材の正面図
【図5】本発明による実施の形態1の電流値と水硬度の特性図
【図6】本発明による実施の形態1の軟水動作時の動作図
【図7】本発明による実施の形態1の蛇口開放時の動作図
【図8】従来の浄水器の縦断面図
【符号の説明】
A 軟水手段
20 給水配管系
22 第1フィルター
23 第2フィルター
50 第2貯水タンク
55 シール部材
63 給水口
70 循環経路
71 循環ポンプ
72 電気透析槽
78 導管
80 軟水供給配管系
83 取出口
100 制御手段
110 操作手段
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electrodialysis water purifier that purifies tap water by an electrodialysis tank and accumulates soft water.
[0002]
[Prior art]
In recent years, various water purifiers have been marketed in order to purify tap water and obtain higher quality drinking water, and as one of this type of water purifier, reverse osmosis membrane water purification using a filter made of a reverse osmosis membrane. There is a reverse osmosis membrane water purifier that recovers wastewater generated by water purification and uses it effectively (see, for example, Patent Document 1).
[0003]
Hereinafter, the conventional reverse osmosis membrane water purifier will be described with reference to the drawings.
[0004]
FIG. 8 is a longitudinal sectional view of a conventional fountain type reverse osmosis membrane water purifier. As shown in FIG. 8, the conventional reverse osmosis membrane water purifier is a wastewater utilization device when a reverse osmosis membrane water purifier is mainly installed under a sink counter.
[0005]
Water pipe 11 drawn into the kitchen, reverse osmosis membrane and carbon filter to purify tap water, reverse osmosis membrane type water purifier 12 for storing water, and purified water faucet for taking out the purified water in reverse osmosis membrane type water purifier 12 13, the connection pipe 14 that connects the purified water faucet 13 and the reverse osmosis membrane type water purifier 12, and the drainage discharged from the reverse osmosis membrane type water purifier 12. A drainage discharge pipe 15 connecting the upper vicinity of the water storage tank 16, a wastewater storage tank 16 for storing wastewater discharged from the reverse osmosis membrane water purifier 12, and a drainage discharge near the upper part of the wastewater storage tank 16. The drainage pipe 26 is connected to the lower part of the pipe 15 at a slightly lower position.
[0006]
The overflow drain pipe 17, the vicinity of the lower part of the waste water storage tank 16, the connecting pipe 18 connecting the pump 19, the faucet 21 for taking out waste water, the connecting pipe 22 connecting the faucet 21 and the pump 19, and the connecting pipe 22 It is comprised from the washing tank 25 which the piping 26 for drainage penetrates.
[0007]
About the reverse osmosis membrane water purifier comprised as mentioned above, the operation | movement is demonstrated below.
[0008]
The tap water is purified by the reverse osmosis membrane type water purifier 12 and used for drinking from the purified water faucet 13. While tap water is being purified by the reverse osmosis membrane water purifier 12, waste water is simultaneously discharged from the reverse osmosis membrane water purifier 12. This waste water passes through the waste water discharge pipe 15 and is stored in the waste water storage tank 16. Can be stored. The waste water in the waste water storage tank 16 is sent to the waste water faucet 21 via the connecting pipe 22 by operating the pump 19 when necessary, and is used as, for example, dishwashing water other than beverages.
[0009]
When there is too much waste water in the waste water storage tank 16, it is discarded from the overflow drain pipe 17 through the kitchen drain pipe 26.
[0010]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-29250
[Problems to be solved by the invention]
However, since the conventional reverse osmosis membrane water purifier uses a reverse osmosis membrane, there is a disadvantage that the cost is increased.
[0012]
In addition, the conventional reverse osmosis membrane water purifier uses a reverse osmosis membrane, and thus has a drawback that generally 40% to 80% of waste water is generated.
[0013]
This invention solves the conventional subject, and it aims at providing a water purifier with a low cost and a small amount of drainage by using an electrodialysis tank as a water purifying means.
[0014]
[Means for Solving the Problems]
The invention according to claim 1 is a water purifier that purifies city water to produce high-quality water, a conduit connected to a water supply, soft water means connected to the conduit, and a secondary side of the soft water means A water purification pipe for taking out purified water from the water, a control means for operating and stopping the soft water means, and an operating means for operating and stopping the soft water means. The soft water means includes a water storage tank and a water storage tank. It is constituted by an attached circulation path, a liquid feed pump provided in the circulation path, an electrodialysis tank provided in the circulation path, and a drain pipe attached to the electrodialysis tank, The city water in the water storage tank is gradually softened in the electrodialysis tank installed in the circulation path.
[0015]
The invention according to claim 2 is the invention according to claim 1, wherein the water storage tank is provided at a lower portion of the water storage tank and into which city water flows and a water purifier provided at an upper portion of the water storage tank. City water that flows into the water storage tank by forming a mixing prevention member in the water storage tank so as to separate the water supply port and the water outlet into two spaces. It has the effect that the purified water that has been stored is not mixed.
[0016]
The invention according to claim 3 is the invention according to claim 1 or claim 2, wherein the mixing preventing member is movable between the vicinity of the water supply inlet and the vicinity of the outlet, The mixing preventing member has an action of moving up and down.
[0017]
Further, the invention according to claim 4 is the invention according to claims 1 to 3, wherein a seal member is provided in the vicinity of the outer periphery of the mixing preventing member, and the city water flowing into the water storage tank is provided. It has the effect that the purified water that has been stored is not mixed.
[0018]
The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the control means sets the electrodialysis tank when the current value generated by the operation of the electrodialysis tank becomes a predetermined value or less. Since the operation is stopped, the operation is stopped at the water hardness corresponding to the predetermined current value.
[0019]
The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the control means intermittently energizes the electrodialysis tank every predetermined time when the electrodialysis tank is stopped. When the generated current value becomes equal to or greater than the predetermined value, the operation of the electrodialysis tank is started, so that the operation is started with the water hardness corresponding to the predetermined current value.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of an ice making device according to the present invention will be described with reference to the drawings. In addition, about the same structure as the past, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.
[0021]
(Embodiment 1)
FIG. 1 is a configuration diagram showing an example of an electrodialysis water purifier according to the first embodiment of the present invention. FIG. 2 is a configuration diagram of the water storage tank according to the first embodiment of the present invention. FIG. 3 is a side view of the mixing preventing member according to Embodiment 1 of the present invention. FIG. 4 is a front view of the mixing preventing member according to Embodiment 1 of the present invention. FIG. 5 is a characteristic diagram showing the relationship between the current value flowing through the electrodialysis tank according to the first embodiment of the present invention and the water hardness. FIG. 6 is an operation diagram at the time of soft water operation according to Embodiment 1 of the present invention. FIG. 7 is an operation diagram when the faucet is opened according to the embodiment of the present invention.
[0022]
In FIG. 1, a first water storage tank 10 is connected to a water supply piping system 20, a purified water extraction piping system 30, and a drainage piping system 40 connected to water. The water supply piping system 20 is mainly composed of a check pressure reducing valve 21, a first filter 22, and a second filter 23, and as a conduit, a conduit 24 connecting the water supply and the check pressure reducing valve 21, A conduit 25 connecting the secondary side of the pressure reducing valve 21 with a check and the inlet of the first filter 22, a conduit 26 connecting the outlet of the first filter 22 and the inlet of the second filter 23, and the outlet of the second filter 23 There is a conduit 27 connecting a water supply port 28 provided in the vicinity of the upper portion of the first water storage tank 10.
[0023]
Here, the 1st filter 22 is installed in order to remove the suspended | floating matter contained in city water, and the furnace material of the mesh structure is filled inside. Next, the 2nd filter 23 is installed in order to remove the bacteria contained in city water, for example, it is a macaroni-like chemical fiber made of polyethylene and polypropylene, and numerous fine holes are opened on the wall surface. Hollow fiber membranes can be used.
[0024]
The purified water extraction piping system 30 includes a faucet 31 and a conduit 32 connecting the faucet 31 and an outlet 33 provided near the upper portion of the first water storage tank 10. The first drainage system 40 includes a manual drainage valve 41 and a conduit 42 that connects the drainage valve 41 and the vicinity of the lower portion of the first water storage tank 10.
[0025]
Next, the water softening means A includes a connecting piping system 60 that connects the first water storage tank 10 and the second water storage tank 50, a second water storage tank 50, and a circulation path 70 that softens the water in the second water storage tank 50. The soft water supply piping system 80 and the drain piping system 90 are configured.
[0026]
The connection piping system 60 includes a check valve 61 attached to the first water storage tank 10 and a conduit 62 that connects the check valve 61 and a water supply port 63 provided near the lower portion of the second water storage tank 50. The check valve 61 is attached so as to form a flow path only from the first water storage tank 10 toward the second water storage tank 50.
[0027]
The circulation path 70 is mainly composed of a circulation pump 71, an electrodialysis tank 72, and an electromagnetic valve 73. As a conduit, a conduit 74 that connects the vicinity of the lower portion of the second water storage tank and the suction port of the circulation pump 71. A conduit 75 connecting the discharge port of the circulation pump 71 and the inlet of the electrodialysis tank 72, a conduit 76 connecting the outlet of the electrodialysis tank 72 and the inlet of the electromagnetic valve 73, and a drain outlet of the electrodialysis tank 72. It consists of a conduit 78 that connects the solenoid valve 77.
[0028]
The soft water supply piping system 80 includes a faucet 81, an outlet 83 provided near the upper portion of the second water storage tank 50, and a conduit 82 that connects the faucet 81. The drainage system 90 includes a manual drainage valve 91 and a conduit 92 that connects the vicinity of the lower portion of the second water storage tank 50 and the drainage valve 91.
[0029]
2, 3, and 4, a mixing preventing member 51 and a guide shaft 52 are formed inside the second water storage tank 50, and the guide shaft 52 has a substantially cylindrical shape, and one end thereof is the second water storage tank. It is fixed to the lower part of the tank 50 in the vertical direction. The mixing prevention member 51 includes a boss 53 through which the guide shaft 52 passes, a mixing prevention plate 54 fixed to the boss 53, and a seal member 55 provided on the outer periphery of the mixing prevention plate 54.
[0030]
The mixing prevention plate 54 has a shape that is substantially the same as the inner wall of the second water storage tank 50. In this embodiment, the mixing prevention plate 54 has a substantially circular dish shape, and two openings 56 are formed. An opening / closing lid 57 is pivotally supported on the mixing preventing plate 54 in the vicinity of the lower surface of the opening 56 and is pressed against the mixing preventing plate 54 with a predetermined spring pressure (not shown).
[0031]
Further, the outer periphery of the mixing prevention plate 54 and the second water storage tank 50 are provided with a predetermined clearance, and a seal member 55 is attached to the entire periphery so as to fill this clearance. As a material of the seal member 55, soft rubber silicon rubber which is flexible and conforms to the water supply method is suitable.
[0032]
The control means 100 is for controlling the operation / stop of the circulation pump 71 and the electrodialysis tank 72 and the opening / closing of the electromagnetic valve 73 and the electromagnetic valve 77, and a current relay for turning the electrodialysis tank 72 on and off, An electromagnetic contactor for turning on and off the circulation pump 71 in response to the output of the current relay; an electromagnetic contactor for the electromagnetic valve 73 for opening and closing the electromagnetic valve 73 in response to the output of the electromagnetic contactor for the circulation pump 71; An electromagnetic contactor for opening and closing the valve 77 is provided.
[0033]
The operation means 110 includes a manual changeover switch for selecting ON / OFF of the soft water function, a lamp for displaying the operation of the electrodialysis tank 72, and a lamp for displaying the completion of the operation of the electrodialysis tank 72.
[0034]
FIG. 5 shows the relationship between the current value generated by applying a DC voltage to the electrodialysis tank 72 and the hardness of the water, and the current value increases as the hardness increases. Here, the first hardness is equivalent to 10 which is the lower limit hardness of the control range of the purified water targeted in this embodiment, and the current value generated in the electrodialysis tank 72 at this time is the first current value.
[0035]
The second hardness is equivalent to 15 which is the upper limit hardness of the control range of the purified water targeted in this embodiment, and the current value generated in the electrodialysis tank 72 at this time is the second current value.
[0036]
The operation of the automatic ice making device configured as described above will be described below with reference to FIGS. 1, 6, and 7. FIG.
[0037]
First, in FIG. 1, the city water supplied from the water supply is supplied to the first water storage tank 10 as the first purified water by passing through the water supply piping system 20. Here, the first purified water is one in which suspended matters and bacteria contained in the city water have been removed by the first filter 22 and the second filter 23 configured in the water supply piping system 20. The first purified water stored in the first water storage tank 10 is supplied to the outside of the water purification apparatus through the purified water extraction piping system 30 by tap water pressure with the opening of the faucet 31, and is mainly used for washing or cooking.
[0038]
Next, in FIG. 6, the first purified water is supplied from the first water storage tank 10 to the second water storage tank 50 through the connection piping system 60. Here, by the operation of the electrodialysis tank 72 and the circulation pump 71, the normally closed electromagnetic valve 73 is opened, and the first purified water stored in the second water storage tank 50 is sent to the electrodialysis tank 72. It is returned to the second water storage tank 50 again.
[0039]
By forming the electrodialysis tank 72 in the circulation circuit in this way, the first purified water in the second water storage tank 50 is gradually removed from the mineral component and the chlorinated component to become the second purified water. At this time, first, the mixing preventing member 51 is configured not to move downward from the connection portion between the conduit 74 and the second water storage tank 50 (details are not shown). When located outside the lower point, the mixing preventing member 51 moves to the lowest point due to its own weight. When the circulation pump 71 is operated in a state where the mixing prevention member 51 is located at the lowest point, the upper part of the mixing prevention member 51 becomes the discharge pressure of the circulation pump 71, and the lower part of the mixing prevention member 51 becomes the suction pressure of the circulation pump 71. The opening / closing lid 57 is opened due to the pressure difference, and a flow path is formed in the second water storage tank 50 by the opening 56.
[0040]
Here, when the soft water function is turned off by the manual changeover switch of the operation means 110, the circulation pump 71 and the electrodialysis tank 72 do not operate. When the soft water function is turned ON by the manual changeover switch of the operation means 110, the circulation pump 71, the electrodialysis tank 72, and the electromagnetic valve 73 are energized, and the first purified water in the second water storage tank 50 is gradually supplied by the electrodialysis tank 72. In addition, the mineral component and the chlorine component are removed, and the operation lamp of the water softener of the operation means 110 is turned on.
[0041]
Here, as the hardness decreases, the current value generated in the electrodialysis tank 72 gradually decreases, and when the water hardness in the second water storage tank 50 reaches 10, the current value generated in the electrodialysis tank 72 is the first current. When the current relay relays the electrodialysis tank 72, the circulation pump 71, and the electromagnetic valve 73, the energization of the electrodialysis tank 72, the circulation pump 71, and the electromagnetic valve 73 is released.
[0042]
Further, water having increased hardness is generated in the concentration chamber of the electrodialysis tank 72. After a predetermined time has elapsed after the circulation pump 71 is started, the electromagnetic valve 77 is energized for a predetermined time to be opened and concentrated. Drain indoor hard water. In this embodiment, the first drainage timing was 20 minutes after the start of the pump 71, and the energization time to the solenoid valve 77 was 20 seconds. For the second and subsequent drainage, the solenoid valve 77 was energized for 20 seconds 20 minutes after the previous drainage.
[0043]
Next, when the faucet 81 is opened, the mixing prevention member 51 is pushed upward by the water pressure, so that the soft water above the mixing prevention member 51 is discharged outside the water purifier through the soft water supply piping system 80. . At this time, due to the effect of the mixing preventing member 51, the first purified water and the second purified water above and below the mixing preventing member 51 are hardly mixed.
[0044]
In addition, since the solenoid valve 73 is not energized and is in a closed state, the first purified water below the mixing prevention member 51 moves upward through the circulation path 70, and the soft water and the first purified water above and below the mixing prevention member 51 are moved. The water from which the mineral component and the chlorinated component are removed without being mixed is mainly used for beverages and cooking.
[0045]
Regarding the control after the soft water is completed, in this embodiment, when only the electrodialysis tank 72 is energized periodically for a predetermined time and the current value generated in the electrodialysis tank 72 becomes larger than the second current value, the operation is continued as it is. However, as another means, a proximity switch with the mixing prevention member 51 is arranged in the lower part of the second water storage tank 50 to detect the rise of the mixing prevention member 51, that is, the opening of the faucet 81. A method of controlling the soft water operation is also conceivable.
[0046]
As described above, the electrodialysis water purifier according to the present embodiment is a water purifier that purifies city water and generates high-quality water. The first filter 22 installed, the second filter 23 installed in the middle of the water supply piping system 20, the soft water means A connected to the connection piping system 60, and the purified water is taken out from the secondary side of the second water storage tank 50. A soft water supply piping system 80, a control means 100 for operating and stopping the soft water means A, and an operating means 110 for operating and stopping the soft water means A are configured. The soft water means A is connected to the second water storage tank 50. A circulation path 70 attached to the second water storage tank 50, a circulation pump 71 provided in the circulation path 70, an electrodialysis tank 72 provided in the circulation path 70, and a gas dialysis tank 72. Consists of drainage pipe 77 Since to be, it can be gradually softening the water in the second water storage tank 50 be used electrodialysis cell of small capacity.
[0047]
Furthermore, since the electrodialysis method is adopted as the water purification method, the amount of drainage can be reduced as compared with the conventional reverse osmosis membrane water purifier.
[0048]
Furthermore, since the mixing preventing member 51 is configured inside the second water storage tank 50, when new water is supplied to the second water storage tank 50, the first water purification and the second water purification are mixed in the second water storage tank 50. Can be suppressed.
[0049]
Furthermore, since the mixing preventing member 51 is movable up and down, a separate device such as a pump is not required, and the water in the second water storage tank 50 is sent out of the water purification device using the water pressure. Can do.
[0050]
Furthermore, since the sealing member 55 is provided on the outer periphery of the mixing prevention plate 54, mixing of soft water with the first purified water can be suppressed in the second water storage tank 50 when the mixing prevention member 51 is moved up and down.
[0051]
Further, the control means 100 is provided with a current relay for detecting a current value generated by the operation of the electrodialysis tank 72 and an electromagnetic contactor for controlling the circulation pump 71 by the output of the current relay. When the hardness of the water becomes equal to or lower than the first hardness, the operation of the soft water means A can be automatically stopped.
[0052]
Furthermore, since the control means 100 intermittently energizes the electrodialysis tank 72 every predetermined time when the electrodialysis tank 72 is stopped, the hardness of the water in the second water storage tank 50 is equal to or higher than the second hardness. In this case, the operation of the soft water means A can be automatically started.
[0053]
【The invention's effect】
As described above, according to the first aspect of the present invention, since the electrodialysis tank is installed in the circulation path and the city water in the water storage tank is gradually softened, the electrodialysis tank can be reduced in size and cost. Can be realized.
[0054]
Furthermore, since the air dialysis system is adopted, the amount of drainage can be reduced.
[0055]
Moreover, in addition to the invention of Claim 1, the invention of Claim 2 comprises the mixing prevention member in the water storage tank, so that the second purified water that has been subjected to the soft water treatment and the first freshly flowing in Mixing with clean water can be prevented.
[0056]
In addition to the invention of claim 1 or claim 2, the invention according to claim 3 allows the mixing prevention member to move between the vicinity of the water inlet and the vicinity of the outlet, so that the water pressure applied to the water inlet is reduced. Can be used to supply the water in the water storage tank to the outside of the water purifier.
[0057]
According to a fourth aspect of the present invention, in addition to the first to third aspects of the invention, a seal member is provided in the vicinity of the outer periphery of the mixing prevention member, so that the inner wall of the water storage tank and the outer periphery of the mixing prevention member are provided. Therefore, the mixing of the water that has been subjected to the soft water treatment and the newly introduced city water can be prevented.
[0058]
In addition to the inventions of claims 1 to 4, the invention of claim 5 stops the electrodialysis tank when the current value generated by the operation of the electrodialysis tank becomes a predetermined value or less. Automatic operation of the water purifier can be realized.
[0059]
In addition to the inventions of the first to fifth aspects, the invention according to claim 6 is configured such that when the electrodialysis tank is stopped, the electrodialysis tank is energized intermittently every predetermined time and generated. Since the operation of the electrodialysis tank is started when the value becomes equal to or greater than a predetermined value, automatic operation of the water purifier can be realized.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of Embodiment 1 of an electrodialysis water purifier according to the present invention. FIG. 2 is a configuration diagram of a water storage tank according to Embodiment 1 of the present invention. FIG. 4 is a side view of the prevention member according to the first embodiment of the present invention. FIG. 5 is a characteristic diagram of current value and water hardness according to the first embodiment of the present invention. FIG. 7 is an operation diagram of the first embodiment according to the present invention when the faucet is opened. FIG. 8 is a longitudinal sectional view of a conventional water purifier.
A soft water means 20 water supply piping system 22 first filter 23 second filter 50 second water storage tank 55 sealing member 63 water supply port 70 circulation path 71 circulation pump 72 electrodialysis tank 78 conduit 80 soft water supply piping system 83 outlet 100 control means 110 Operation means

Claims (6)

市水を浄化して良質な水を生成する浄水器において、水道に連結された導管と、前記導管が連結された軟水手段と、前記軟水手段の二次側から浄水を取り出す浄水取出管と、前記軟水手段を運転、停止させる制御手段と、前記軟水手段の運転、停止を操作する操作手段とからなり、前記軟水手段は、貯水タンクと、前記貯水タンクに付設された循環経路と、前記循環経路内に設けられた送液ポンプと、前記循環経路内に設けられた電気透析槽と、前記電気透析槽に付設された排水管で構成されることを特長とする電気透析式浄水器。In a water purifier that purifies city water to produce high-quality water, a conduit connected to a water supply, a soft water means connected to the conduit, a purified water discharge pipe for taking out purified water from a secondary side of the soft water means, The soft water means includes a control means for operating and stopping the soft water means, and an operation means for operating the soft water means to operate and stop. The soft water means includes a water storage tank, a circulation path attached to the water storage tank, and the circulation. An electrodialysis water purifier comprising: a liquid feed pump provided in a path; an electrodialysis tank provided in the circulation path; and a drain pipe attached to the electrodialysis tank. 貯水タンクは、前記貯水タンク下部に設けられ市水が流入する給水口と、前記貯水タンク上部に設けられ浄水を浄水取出管へ供給する取出口とからなり、前記貯水タンク内部に前記給水口と前記取出口を2つの空間に隔てるように混合防止部材を構成したことを特長とする電気透析式浄水器。The water storage tank includes a water supply port provided at a lower portion of the water storage tank through which city water flows and an outlet provided at an upper portion of the water storage tank for supplying purified water to a purified water discharge pipe. An electrodialysis water purifier characterized in that a mixing preventing member is configured so that the outlet is separated into two spaces. 混合防止部材は、給水口近傍と取出口近傍の間を移動可能なことを特長とする請求項1または請求項2に記載の電気透析式浄水器。The electrodialysis water purifier according to claim 1 or 2, wherein the mixing preventing member is movable between the vicinity of the water supply port and the vicinity of the outlet. 混合防止部材の外周近傍にシール部材を具備したことを特長とする請求項1から請求項3に記載の電気透析式浄水器。The electrodialysis water purifier according to any one of claims 1 to 3, wherein a seal member is provided in the vicinity of the outer periphery of the mixing prevention member. 制御手段は、電気透析槽の運転により生じる電流値が所定置以下となった時、電気透析槽を停止させることを特長とする請求項1から請求項4に記載の電気透析式浄水器。The electrodialysis water purifier according to any one of claims 1 to 4, wherein the control means stops the electrodialysis tank when a current value generated by the operation of the electrodialysis tank becomes a predetermined value or less. 制御手段は、電気透析槽の停止時には、前記電気透析槽に所定時間毎に断続的に通電を行い、発生する電流値が所定値以上となった時、前記電気透析槽の運転を開始することを特長とする請求項1から請求項5に記載の電気透析式浄水器。The control means intermittently energizes the electrodialysis tank every predetermined time when the electrodialysis tank is stopped, and starts operation of the electrodialysis tank when the generated current value exceeds a predetermined value. The electrodialysis water purifier according to claim 1, wherein:
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