JPH10165946A - Water purifier - Google Patents
Water purifierInfo
- Publication number
- JPH10165946A JPH10165946A JP33396096A JP33396096A JPH10165946A JP H10165946 A JPH10165946 A JP H10165946A JP 33396096 A JP33396096 A JP 33396096A JP 33396096 A JP33396096 A JP 33396096A JP H10165946 A JPH10165946 A JP H10165946A
- Authority
- JP
- Japan
- Prior art keywords
- residual chlorine
- chlorine concentration
- water
- detecting
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Water Treatment By Sorption (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は浄水器、殊に浄水中
の残留塩素濃度の表示機能や濾過槽の濾材の交換時期の
表示機能を備えている浄水器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifier, and more particularly to a water purifier having a function of displaying a residual chlorine concentration in purified water and a function of displaying a time for replacing a filter medium in a filtration tank.
【０００２】[0002]
【従来の技術】浄水器においては濾材を充填した濾過槽
に水を通すことで水道水（原水）中の塩素の除去や臭い
の除去を行うが、この種のものにおける濾材の一つとし
て一般に使用される活性炭は、長期にわたる使用では吸
着したものを放出することで、原水の水道水よりも水質
を悪くしてしまうことがある。2. Description of the Related Art In a water purifier, chlorine or odor in tap water (raw water) is removed by passing water through a filter tank filled with a filter medium. When used for a long period of time, the activated carbon used emits adsorbed substances, which may worsen the quality of the raw water tap water.
【０００３】このために家庭用として提供されている浄
水器では、濾材をカートリッジに納めて交換しやすくす
ることがなされているとともに、浄化した水に含まれる
残留塩素の濃度を検出してこれを表示することで浄水の
状態を使用者が判別できるようにしたり、濾材の交換時
期になれば交換を促す表示を行うものが提供されてい
る。なお交換時期に至ったかどうかの判別を行って表示
を行うわけであるが、これは浄水中の残留塩素濃度を検
出して該残留塩素濃度を基に濾材の交換を促したり、積
算通水量を基に濾材の交換を促していた。[0003] For this reason, in a water purifier provided for home use, a filter medium is housed in a cartridge to facilitate replacement, and the concentration of residual chlorine contained in purified water is detected and detected. There is provided a display that allows the user to determine the state of purified water by displaying the display, or that displays a message prompting the user to replace the filter medium when it is time to replace the filter medium. In addition, it is determined whether or not the replacement time has been reached, and the display is performed.This is to detect the residual chlorine concentration in the purified water and urge the replacement of the filter medium based on the residual chlorine concentration, or to estimate the integrated water flow rate. He was prompted to change the filter media.
【０００４】[0004]
【発明が解決しようとする課題】ところで、浄化した水
に含まれる残留塩素の濃度を検出してこれを表示するも
のでは、浄水中の残留塩素濃度を使用者が知ることがで
きるが、浄水器を用いたことで原水からどれだけ浄化さ
れた水を得られるようになったのかは知ることができ
ず、このために浄水器の効用について使用者に実感させ
ることができないものであった。By the way, when the concentration of residual chlorine contained in purified water is detected and displayed, the user can know the concentration of residual chlorine in the purified water. It was not possible to know how purified water could be obtained from the raw water due to the use of the water purifier, and thus it was not possible for the user to realize the utility of the water purifier.
【０００５】また、浄水中の残留塩素濃度を検出して該
残留塩素濃度が所定値以上になれば濾材の交換を促すも
のでは、原水における残留塩素濃度が元々低い場合、濾
材の浄化能力が落ちていてもこれを報知することができ
ない事態が長期にわたり持続してしまうことがある。そ
して積算通水量を基に濾材の交換を促すものでは、濾材
の浄化能力が低下していなくても交換を促してしまう場
合がある。Further, when the residual chlorine concentration in the purified water is detected and the residual chlorine concentration becomes a predetermined value or more, the filter medium is urged to be replaced. In some cases, this cannot be reported for a long time. In the case of prompting the replacement of the filter medium based on the accumulated water flow, the replacement may be promoted even if the purification ability of the filter medium is not reduced.
【０００６】本発明はこのような点に鑑み為されたもの
であり、その目的とするところは浄化度を使用者に知ら
せることができる浄水器を提供するにあり、また他の目
的とするところは濾材の交換時期を適切に知らせること
ができる浄水器を提供するにある。[0006] The present invention has been made in view of such a point, and an object of the present invention is to provide a water purifier capable of informing a user of the degree of purification, and another object. It is an object of the present invention to provide a water purifier capable of appropriately notifying the replacement time of the filter medium.
【０００７】[0007]
【課題を解決するための手段】しかして本発明は、濾過
槽への流入側にあって原水の残留塩素濃度を検出する電
気化学的検出手段と、濾過槽からの流出側にあって浄水
の残留塩素濃度を検出する電気化学的検出手段とを備え
るとともに、各検出手段の電気的出力から原水の残留塩
素濃度と浄水の残留塩素濃度とを算出して両濃度差や濃
度比に基づいて浄化度を表示手段に表示させる演算手段
を備えていることに第１の特徴を有している。どれだけ
浄化されたかを使用者に知らせることができるものであ
る。そして表示手段として残留塩素濃度の表示部を備え
たものを使用する場合には、不等分割目盛の残留塩素濃
度表示部を設けたものとしておくのが好ましい。SUMMARY OF THE INVENTION Accordingly, the present invention provides an electrochemical detection means for detecting the residual chlorine concentration of raw water at an inflow side into a filtration tank, and a water purification means at an outflow side from the filtration tank. Electrochemical detection means for detecting the residual chlorine concentration are provided, and the residual chlorine concentration of the raw water and the residual chlorine concentration of the purified water are calculated from the electrical output of each detecting means, and purification is performed based on the difference between the two concentrations and the concentration ratio. The first feature is that a calculation means for displaying the degree on the display means is provided. The user can be informed of how much has been purified. When a display having a residual chlorine concentration display section is used as the display means, it is preferable to provide a residual chlorine concentration display section on an unequal division scale.
【０００８】また本発明は、濾過槽への流入側にあって
原水の残留塩素濃度を検出する電気化学的検出手段と、
濾過槽からの流出側にあって浄水の残留塩素濃度を検出
する電気化学的検出手段とを備えるとともに、各検出手
段の電気的出力から原水の残留塩素濃度と浄水の残留塩
素濃度とを算出して両濃度に基づいて濾過層の濾材の交
換時期を表示手段に表示させる演算手段を備えているこ
とに特徴を有している。原水をどれだけ浄化することが
できたかに基づいて濾材の交換時期の判別を行うわけで
ある。[0008] The present invention also provides an electrochemical detection means for detecting the residual chlorine concentration of raw water at an inflow side to a filtration tank,
Electrochemical detection means for detecting the residual chlorine concentration of the purified water at the outflow side from the filtration tank is provided, and the residual chlorine concentration of the raw water and the residual chlorine concentration of the purified water are calculated from the electric output of each detecting means. In addition, there is provided a calculating means for displaying the replacement time of the filter medium of the filtration layer on the display means based on the two concentrations. The replacement time of the filter medium is determined based on how much the raw water has been purified.
【０００９】原水の残留塩素濃度を検出する電気化学的
検出手段と、浄水の残留塩素濃度を検出する電気化学的
検出手段とは、単一の電気化学的検出部と、該電気化学
的検出部に原水と浄水とを選択的に導入する切換弁とか
らなるものとしてもよい。また原水の残留塩素濃度を検
出する電気化学的検出手段と、浄水の残留塩素濃度を検
出する電気化学的検出手段とは、夫々一対の電極を具備
しているとともに、両検出手段の各一対の電極のうちの
各一方の電極が共通電極とされて該共通電極が原水と浄
水とを隔てているものとしてもよい。The electrochemical detecting means for detecting the concentration of residual chlorine in raw water and the electrochemical detecting means for detecting the concentration of residual chlorine in purified water comprise a single electrochemical detecting section and the electrochemical detecting section. And a switching valve for selectively introducing raw water and purified water. The electrochemical detection means for detecting the residual chlorine concentration in the raw water and the electrochemical detection means for detecting the residual chlorine concentration in the purified water each have a pair of electrodes, and each of the pair One of the electrodes may be a common electrode, and the common electrode may separate raw water and purified water.
【００１０】[0010]
【発明の実施の形態】本発明の実施の形態の一例につい
て説明すると、カートリッジ型の濾材２０を収容した濾
過槽２を備えている図示例の浄水器は、水道等に接続さ
れることになる原水供給口１１と濾過槽２との間を接続
している流路中に原水の残留塩素濃度を検出する濃度検
出部３ａが設けられているとともに、濾過槽２において
浄化した浄水を吐出する浄水吐出口１２と濾過槽２との
間を接続している流路中に浄水の残留塩素濃度を検出す
る濃度検出部３ｂが設けられている。DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of an embodiment of the present invention will be described. The illustrated water purifier provided with a filtration tank 2 containing a cartridge type filter medium 20 is connected to a water supply or the like. A concentration detector 3a for detecting the residual chlorine concentration of the raw water is provided in a flow path connecting the raw water supply port 11 and the filtration tank 2, and purified water for discharging purified water purified in the filtration tank 2. A concentration detector 3b for detecting the concentration of residual chlorine in purified water is provided in a flow path connecting the discharge port 12 and the filtration tank 2.
【００１１】ここにおける濃度検出部３ａ，３ｂは、た
とえば銀や白金などの反応に安定なものからなる一対の
電極間に定電圧を印加して、残留塩素などの定電圧電界
で生じた電流を検出するアンペロメトリー法のような電
気化学的検出手段で形成されたものであって、演算制御
部５の制御下におかれており、その電流出力から演算制
御部５は残留塩素濃度を求める。The concentration detectors 3a and 3b apply a constant voltage between a pair of electrodes made of a material that is stable to a reaction such as silver or platinum, and detect a current generated by a constant voltage electric field such as residual chlorine. It is formed by an electrochemical detection means such as an amperometry method for detection, and is under the control of the arithmetic and control unit 5, and the arithmetic and control unit 5 calculates the residual chlorine concentration from the current output. .
【００１２】また演算制御部５は、求めた残留塩素濃度
を元に液晶ディスプレーや発光ダイオード等で構成され
た表示部６に表示を行うのであるが、ここでは表示部６
として図１(b)に示すように、残留塩素濃度を示すため
のバーグラフ型の濃度表示部６０と、原水についての濃
度表示であるか浄水についての濃度表示であるかを示す
種別表示部６１，６１と、カートリッジ型の濾材２０の
品名と交換及びその交換準備を促すためのメッセージ表
示部６２とを備えたものを用いている。The arithmetic and control unit 5 performs display on a display unit 6 composed of a liquid crystal display, a light emitting diode or the like based on the obtained residual chlorine concentration.
As shown in FIG. 1 (b), a bar graph type concentration display unit 60 for indicating the residual chlorine concentration and a type display unit 61 for indicating whether the concentration display is for raw water or for purified water. , 61, and a message display unit 62 for prompting the user to exchange the name of the cartridge type filter medium 20 and prepare for the exchange.
【００１３】しかしてこの浄水器においては、原水供給
口１１を通じて水道水などの原水を濾過槽２に送れば、
濃度検出部３ａにおいて原水中の残留塩素濃度が測定さ
れて、図２(a)に示すように、種別表示部６１が原水で
あることを表示すると同時に濃度表示部６０において原
水の残留塩素濃度が表示（図示例では０．８ｐｐｍであ
ることを示している）される。In this water purifier, if raw water such as tap water is sent to the filtration tank 2 through the raw water supply port 11,
The concentration detector 3a measures the residual chlorine concentration in the raw water, and as shown in FIG. 2A, the type display 61 indicates that the raw water is the raw water, and at the same time the residual chlorine concentration in the raw water is displayed on the concentration display 60. It is displayed (it shows that it is 0.8 ppm in the illustrated example).
【００１４】そして濾過槽２を通過した浄水は濃度検出
部３ｂにおいて残留塩素濃度が測定され、上記原水につ
いての残留塩素濃度表示が始まってから５秒ほど経過し
た時点から、図２(b)に示すように、種別表示部６１で
浄水であることを表示すると同時に濃度表示部６０にお
いて浄水の残留塩素濃度が（図示例では約０．０５ｐｐ
ｍであることを示している）される。The concentration of the residual chlorine in the purified water that has passed through the filtration tank 2 is measured by the concentration detector 3b, and after about 5 seconds have elapsed since the display of the residual chlorine concentration for the raw water started, FIG. As shown in the figure, the type display section 61 indicates that the water is purified, and at the same time, the concentration display section 60 displays the residual chlorine concentration (about 0.05 pp in the illustrated example).
m).
【００１５】原水の残留塩素濃度と浄水の残留塩素濃度
とが時間をおいて濃度表示部６０で表示されるものであ
り、このために２つの濃度の差から原水がどれだけ浄化
されたのかを使用者は認識することができる。もちろ
ん、濃度表示部６０をたとえば上下２段に設けて、原水
の残留塩素濃度と浄水の残留塩素濃度とを同時表示して
もよい。The residual chlorine concentration of the raw water and the residual chlorine concentration of the purified water are displayed on the concentration display section 60 after a certain time, and the difference between the two concentrations indicates how much the raw water has been purified. The user can recognize. Needless to say, the concentration display units 60 may be provided, for example, in two stages above and below to simultaneously display the residual chlorine concentration of the raw water and the residual chlorine concentration of the purified water.
【００１６】また演算制御部５はメモリを内蔵して、濾
材２０が交換された後の最初の通水時における原水の残
留塩素濃度と浄水の残留塩素濃度とから求められる浄化
度をメモリに格納し、通水のたびに浄化度の演算を行っ
て、初期の浄化度との比較を行い、この比較結果を基に
メッセージ表示部６２にカートリッジ交換準備、あるい
はカートリッジの交換を促す表示を行わせる。ここでの
浄化度は、 浄化度＝１−（浄水の残留塩素濃度）／（原水の残留塩
素濃度） によって求めており、現在の浄化度が初期の浄化度の約
９０％を下回ることになれば、図２(c)に示すように、
カートリッジ交換準備を促す表示を行わせ、現在の浄化
度が初期の浄化度の約８０％を下回ることになれば、図
２(d)に示すように、カートリッジ交換を促す表示を行
わせる。なお、残留塩素濃度を含む水を飲む時、残留塩
素濃度が０．４ｐｐｍを越えると塩素臭（カルキ臭）の
不快感を感ずることから、現在の浄化度が初期の浄化度
の約８０％を下回っていなくとも、現在の浄水の残留塩
素濃度が０．４ｐｐｍを越える時には、浄化度の変化度
合いに拘わらず、メッセージ表示部６２においてカート
リッジ交換を促す表示を行わせるようにしている。The arithmetic and control unit 5 has a built-in memory and stores the degree of purification determined from the residual chlorine concentration of the raw water and the residual chlorine concentration of the purified water at the first passage after the filter medium 20 is replaced. Then, each time the water is passed, the degree of purification is calculated and compared with the initial degree of purification. Based on the result of the comparison, the message display unit 62 is caused to display a message prompting for cartridge replacement preparation or cartridge replacement. . The degree of purification here is calculated by: degree of purification = 1− (residual chlorine concentration of purified water) / (residual chlorine concentration of raw water), and the current degree of purification can be less than about 90% of the initial degree of purification. For example, as shown in FIG.
A display prompting for cartridge replacement preparation is made. If the current purification degree falls below about 80% of the initial purification degree, a display prompting cartridge replacement is made as shown in FIG. In addition, when drinking water containing residual chlorine concentration, if the residual chlorine concentration exceeds 0.4 ppm, you will feel discomfort of chlorine odor (kalky odor), so the current purification degree is about 80% of the initial purification degree. Even if it is not below, when the present residual chlorine concentration of the purified water exceeds 0.4 ppm, regardless of the degree of change in the degree of purification, a message urging the replacement of the cartridge is displayed on the message display section 62.
【００１７】ところで、残留塩素濃度が０．４ｐｐｍ以
上であれば無条件にカートリッジ交換を促す場合、０．
４ｐｐｍ以上の表示部分はさほど細かく表示しなくとも
よい上に、濾材２０の劣化による残留塩素濃度の増加は
図３に示すように末期において急激に大きくなる。この
点からすれば、図２に示すような１．０ｐｐｍまで等間
隔目盛としている濃度表示部６０よりも、図４に示すよ
うに、０．４ｐｐｍ以下は細かく表示し、０．４ｐｐｍ
を越えれば粗く表示する不等間隔目盛の濃度表示部６０
の方が好ましい。Incidentally, if the residual chlorine concentration is 0.4 ppm or more, when urging the user to unconditionally replace the cartridge, it is necessary to set the residual chlorine concentration to 0.1 ppm.
The display portion of 4 ppm or more does not need to be displayed so finely, and the increase in the residual chlorine concentration due to the deterioration of the filter medium 20 rapidly increases at the end stage as shown in FIG. From this point, as shown in FIG. 4, 0.4 ppm or less is finely displayed, and 0.4 ppm or less, as compared with the density display section 60 having the equally spaced scale up to 1.0 ppm as shown in FIG.
Density display unit 60 of irregularly graduated scale that displays coarsely if it exceeds
Is preferred.
【００１８】また、原水の残留塩素濃度と浄水の残留塩
素濃度とを表示することで、浄化の度合いを使用者に認
識させるのではなく、前述の浄化度を表示するようにし
てもよい。図５はこの場合の表示部６の一例を示してお
り、図５(a)は使用初期の濾材２０での浄化度の表示状
態を、図５(b)は交換時期に達した濾材２０での浄化度
の表示状態を示しており、図中５つの表示区分は例えば
左から浄化度が０〜０．８未満、０．８〜０．８５未
満、０．８５〜０．９未満、０．９〜０．９５未満、
０．９５〜１と割り付けている。Further, the above-described purification degree may be displayed by displaying the residual chlorine concentration of the raw water and the residual chlorine concentration of the purified water instead of letting the user recognize the degree of purification. FIG. 5 shows an example of the display unit 6 in this case. FIG. 5 (a) shows the display state of the degree of purification of the filter medium 20 in the initial stage of use, and FIG. In the drawing, five display sections indicate, for example, from the left, the degree of purification is 0 to less than 0.8, 0.8 to less than 0.85, 0.85 to less than 0.9, and 0. 0.9 to less than 0.95,
0.95-1.
【００１９】図６に他例を示す。これは単独の濃度検出
部３によって原水の残留塩素濃度と浄水の残留塩素濃度
とを測定することができるように、原水を濃度検出部３
に導くか浄水を濃度検出部３に導くかを選択的に切り換
える切換弁７を設けたものである。図中１７は該切換弁
７の切換操作用のボタンである。電気化学的濃度検出を
行う濃度検出部３は前述のように対の電極を用いること
から、図７に示すように、原水の残留塩素濃度検出用の
２つの電極のうちの一方と、浄水の残留塩素濃度検出用
の２つの電極のうちの一方とを共通として、該共通電極
３０を原水と浄水とを隔てる位置に配置し、各他方の電
極３１，３１を原水中と浄水中とに設置するようにして
もよい。原水中と浄水中とに夫々対の電極を個別に設け
る場合に比して、電極の固体差による誤差を軽減するこ
とができるために、濃度検出精度を高めることができ
る。FIG. 6 shows another example. This is because raw water is measured by the concentration detector 3 so that the concentration of residual chlorine in raw water and the concentration of residual chlorine in purified water can be measured by the single concentration detector 3.
And a switching valve 7 for selectively switching whether to guide the purified water to the concentration detection unit 3. In the figure, reference numeral 17 denotes a button for switching operation of the switching valve 7. As described above, the concentration detection unit 3 that performs electrochemical concentration detection uses a pair of electrodes. Therefore, as shown in FIG. 7, one of the two electrodes for detecting the residual chlorine concentration in the raw water and the purified water With one of the two electrodes for detecting the residual chlorine concentration being common, the common electrode 30 is disposed at a position separating raw water and purified water, and the other electrodes 31, 31 are disposed in raw water and purified water. You may make it. Compared to a case where a pair of electrodes are individually provided in the raw water and the purified water, an error due to the individual difference between the electrodes can be reduced, so that the concentration detection accuracy can be improved.
【００２０】ところで、電気化学的濃度検出法としてあ
げたアンペロメトリー法では、残留塩素を含む水道水に
鉄イオン（Ｆｅ3+）を添加して電圧を変化させつつ測定
した図８に示すボルタモグラフから明らかなように、
０．５Ｖ付近で ＣｌＯ- ＋Ｈ2Ｏ＋２ｅ- → Ｃｌ-＋２ＯＨ- に基づく残留塩素の電極反応があり、０．７Ｖ付近で Ｆｅ3+＋ｅ- → Ｆｅ2+ に基づく鉄イオンの電極反応が起こるために、上記電圧
を順次印加することによって、アンペロメトリー法によ
り残留塩素と鉄イオンとの定量が可能である。もちろ
ん、電極間電圧を０〜１．５Ｖ程度の区間で掃引するこ
とにより、この間に電極反応を起こす他の物質について
も個々に定量分析が可能である。In the amperometry method described as an electrochemical concentration detection method, a voltammogram shown in FIG. 8 was measured by adding iron ions (Fe 3+ ) to tap water containing residual chlorine and changing the voltage. As is clear from
At about 0.5 V, there is an electrode reaction of residual chlorine based on ClO − + H 2 O + 2e − → Cl − + 2OH − , and at about 0.7 V, an electrode reaction of iron ions based on Fe 3+ + e − → Fe 2+ occurs. Then, by applying the above voltage sequentially, the residual chlorine and iron ions can be quantified by amperometry. Of course, by sweeping the voltage between the electrodes in a range of about 0 to 1.5 V, other substances that cause an electrode reaction during this period can be individually subjected to quantitative analysis.
【００２１】一方で、鉄イオンによるいわゆる金気は水
のおいしさを損なうものであることから、浄化の度合い
の指標として、残留塩素濃度と鉄イオン濃度とを合わせ
たものを用いるのも好ましい。浄化度と水のおいしさと
について相関を大きくすることができる。この場合、原
水の残留塩素濃度と鉄イオン濃度とを夫々Ｃａ，Ｃｂ、
浄水の残留塩素濃度と鉄イオン濃度とを夫々Ｃｃ，Ｃｄ
とすれば、浄化度は 浄化度＝１−（Ｃｃ＋Ｃｄ）／（Ｃａ＋Ｃｂ） で求めればよい。水のおいしさに関して残留塩素濃度と
鉄イオン濃度とは異なる影響を与えることから、残留塩
素比例係数ｊ及び鉄イオン比例係数ｋを重み付けとして
用いて 浄化度＝１−（Ｃｃ／ｊ＋Ｃｄ／ｋ）／（Ｃａ／ｊ＋Ｃ
ｂ／ｋ） で浄化度を算出するようにしてもよい。On the other hand, since the so-called fermentation due to iron ions impairs the taste of water, it is preferable to use a combination of the residual chlorine concentration and the iron ion concentration as an index of the degree of purification. The correlation between the degree of purification and the taste of water can be increased. In this case, the residual chlorine concentration and the iron ion concentration of the raw water are respectively Ca, Cb,
The residual chlorine concentration and iron ion concentration of the purified water were determined by Cc and Cd, respectively.
Then, the purification degree may be obtained by the following equation: purification degree = 1- (Cc + Cd) / (Ca + Cb). Since the residual chlorine concentration and the iron ion concentration have different effects on the taste of water, the degree of purification = 1− (Cc / j + Cd / k) / using the residual chlorine proportional coefficient j and the iron ion proportional coefficient k as weights. (Ca / j + C
b / k) may be used to calculate the degree of purification.
【００２２】[0022]
【発明の効果】以上のように本発明においては、原水の
残留塩素濃度を検出する電気化学的検出手段と、浄水の
残留塩素濃度を検出する電気化学的検出手段との電気的
出力から原水の残留塩素濃度と浄水の残留塩素濃度とを
算出して両濃度差や濃度比に基づいて浄化度を表示手段
に表示させるために、浄化によって得られた浄水が原水
からどれだけ浄化したものかを使用者に知らせることが
できるものであり、使用者にしてみれば飲用に用いる浄
水についての安心感がより高くなる上に、浄水器を使用
していることについての満足感も高くなるものである。As described above, according to the present invention, raw water is detected from the electrical output of the electrochemical detection means for detecting the residual chlorine concentration of the raw water and the electrochemical detection means for detecting the residual chlorine concentration of the purified water. In order to calculate the residual chlorine concentration and the residual chlorine concentration of the purified water and display the degree of purification on the display means based on the concentration difference and the concentration ratio, the amount of purified water obtained by purification from the raw water is determined. It can inform the user, and the user will feel more secure about drinking water used for drinking, and will also have a higher sense of satisfaction using the water purifier. .
【００２３】そして表示手段として残留塩素濃度の表示
部を備えたものを使用する場合には、不等分割目盛の残
留塩素濃度表示部を設けたものとすることで、より的確
でわかりやすい濃度表示を行うことができる。また本発
明においては、原水の残留塩素濃度を検出する電気化学
的検出手段と、浄水の残留塩素濃度を検出する電気化学
的検出手段との電気的出力から原水の残留塩素濃度と浄
水の残留塩素濃度とを算出して両濃度に基づいて濾過層
の濾材の交換時期を表示手段に表示させるために、つま
りは原水からの浄化度に基づいて濾材の交換時期の判別
を行うために、濾材の濾過能力の低下を的確にとらえる
ことができるものであり、これに伴って濾材の交換時期
表示を適切な時点で行うことができるものである。When a display having a residual chlorine concentration display section is used as the display means, the residual chlorine concentration display section on the unequal division scale is provided to provide a more accurate and easy-to-understand concentration display. It can be carried out. Further, in the present invention, the residual chlorine concentration of the raw water and the residual chlorine concentration of the purified water are determined from the electrical outputs of the electrochemical detection means for detecting the residual chlorine concentration of the raw water and the electrochemical detection means for detecting the residual chlorine concentration of the purified water. In order to calculate the concentration and to display the replacement time of the filter medium of the filtration layer on the display means based on both concentrations, that is, to determine the replacement time of the filter medium based on the degree of purification from the raw water, It is possible to accurately detect a decrease in the filtration capacity, and accordingly, it is possible to display the replacement time of the filter medium at an appropriate time.
【００２４】また原水の残留塩素濃度を検出する電気化
学的検出手段と、浄水の残留塩素濃度を検出する電気化
学的検出手段とを、単一の電気化学的検出部と該電気化
学的検出部に原水と浄水とを選択的に導入する切換弁と
からなるものとした時には、検出部の構成を簡略化する
ことができる。原水の残留塩素濃度を検出する電気化学
的検出手段と、浄水の残留塩素濃度を検出する電気化学
的検出手段とが夫々一対の電極を具備するものである
時、両検出手段の各一対の電極のうちの各一方の電極を
共通電極として該共通電極が原水と浄水とを隔てている
ものとすれば、やはり構成を簡略化することができる上
に、電極の固体差による誤差を軽減することができるた
めに、濃度検出精度を高めることができる。An electrochemical detecting means for detecting the residual chlorine concentration of the raw water and an electrochemical detecting means for detecting the residual chlorine concentration of the purified water are provided by a single electrochemical detecting section and the electrochemical detecting section. When it comprises a switching valve for selectively introducing raw water and purified water, the configuration of the detection unit can be simplified. When the electrochemical detection means for detecting the residual chlorine concentration in the raw water and the electrochemical detection means for detecting the residual chlorine concentration in the purified water each have a pair of electrodes, each pair of electrodes of both detection means If one of the electrodes is a common electrode and the common electrode separates raw water and purified water, the structure can be simplified, and errors due to individual differences between the electrodes can be reduced. Therefore, the concentration detection accuracy can be improved.
【図１】本発明の実施の形態の一例を示すもので、(a)
は概略図、(b)は表示部の一例の正面図である。FIG. 1 shows an example of an embodiment of the present invention, in which (a)
Is a schematic diagram, and (b) is a front view of an example of a display unit.
【図２】同上の表示部の表示状態を示すもので、(a)(b)
(c)(d)は夫々正面図である。FIGS. 2A and 2B show display states of a display unit of the above.
(c) and (d) are front views, respectively.
【図３】同上の濾材の濾過能力の推移を示す説明図であ
る。FIG. 3 is an explanatory diagram showing a change in the filtering ability of the filter medium.
【図４】同上の表示部の他例の正面図である。FIG. 4 is a front view of another example of the display unit of the above.
【図５】同上の表示部の更に他例の正面図である。FIG. 5 is a front view of still another example of the display unit of the above.
【図６】実施の形態の別の例を示す概略図である。FIG. 6 is a schematic diagram showing another example of the embodiment.
【図７】実施の形態の更に別の例を示す概略図である。FIG. 7 is a schematic diagram showing still another example of the embodiment.
【図８】定電圧電解における電圧−電流特性図である。FIG. 8 is a voltage-current characteristic diagram in constant voltage electrolysis.
１ 浄水器 ２ 濾過槽 ３ａ 濃度検出部 ３ｂ 濃度検出部 ５ 演算制御部 ６ 表示部 DESCRIPTION OF SYMBOLS 1 Water purifier 2 Filtration tank 3a Concentration detection part 3b Concentration detection part 5 Operation control part 6 Display part
Claims (5)
素濃度を検出する電気化学的検出手段と、濾過槽からの
流出側にあって浄水の残留塩素濃度を検出する電気化学
的検出手段とを備えるとともに、各検出手段の電気的出
力から原水の残留塩素濃度と浄水の残留塩素濃度とを算
出して両濃度差や濃度比に基づいて浄化度を表示手段に
表示させる演算手段を備えていることを特徴とする浄水
器。1. An electrochemical detection means for detecting a residual chlorine concentration of raw water on an inflow side to a filtration tank, and an electrochemical detection for detecting a residual chlorine concentration of purified water on an outflow side from a filtration tank. Means for calculating the residual chlorine concentration of the raw water and the residual chlorine concentration of the purified water from the electrical output of each detecting means, and displaying the degree of purification on the display means based on the difference or concentration ratio between the two. A water purifier characterized by comprising:
の表示部を備えていることを特徴とする請求項１記載の
浄水器。2. The water purifier according to claim 1, wherein the display means includes a display unit for the residual chlorine concentration on the unequal division scale.
素濃度を検出する電気化学的検出手段と、濾過槽からの
流出側にあって浄水の残留塩素濃度を検出する電気化学
的検出手段とを備えるとともに、各検出手段の電気的出
力から原水の残留塩素濃度と浄水の残留塩素濃度とを算
出して両濃度に基づいて濾過層の濾材の交換時期を表示
手段に表示させる演算手段を備えていることを特徴とす
る浄水器。3. An electrochemical detection means for detecting a residual chlorine concentration of raw water at an inflow side to a filtration tank, and an electrochemical detection means for detecting a residual chlorine concentration of purified water at an outflow side from the filtration tank. Calculating means for calculating the residual chlorine concentration of the raw water and the residual chlorine concentration of the purified water from the electrical output of each detecting means, and displaying the replacement time of the filter medium of the filtration layer on the display means based on both the concentrations. A water purifier comprising:
的検出手段と、浄水の残留塩素濃度を検出する電気化学
的検出手段とは、単一の電気化学的検出部と、該電気化
学的検出部に原水と浄水とを選択的に導入する切換弁と
からなることを特徴とする請求項１または３記載の浄水
器。4. An electrochemical detecting means for detecting the residual chlorine concentration of raw water, and an electrochemical detecting means for detecting the residual chlorine concentration of purified water, comprising a single electrochemical detecting section, 4. The water purifier according to claim 1, further comprising a switching valve for selectively introducing raw water and purified water to the detection unit.
的検出手段と、浄水の残留塩素濃度を検出する電気化学
的検出手段とは、夫々一対の電極を具備しているととも
に、両検出手段の各一対の電極のうちの各一方の電極が
共通電極とされて該共通電極が原水と浄水とを隔ててい
ることを特徴とする請求項１または３記載の浄水器。5. An electrochemical detecting means for detecting the residual chlorine concentration of the raw water and an electrochemical detecting means for detecting the residual chlorine concentration of the purified water each have a pair of electrodes. 4. The water purifier according to claim 1, wherein one of the pair of electrodes is a common electrode, and the common electrode separates raw water and purified water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33396096A JPH10165946A (en) | 1996-12-13 | 1996-12-13 | Water purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33396096A JPH10165946A (en) | 1996-12-13 | 1996-12-13 | Water purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10165946A true JPH10165946A (en) | 1998-06-23 |
Family
ID=18271918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33396096A Pending JPH10165946A (en) | 1996-12-13 | 1996-12-13 | Water purifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10165946A (en) |
-
1996
- 1996-12-13 JP JP33396096A patent/JPH10165946A/en active Pending
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