KR20100052124A - Water purifier equipped ionizer - Google Patents

Abstract

PURPOSE: A water cleaner equipped with blocking function is provided to prevent unnecessary electrical energy consumption by electrolysis in case water is controlled by an external factor, and to prevent breeding of virus of water by creating silver ion. CONSTITUTION: A water cleaner comprises the following: a filter(90) filtering water which is flowed through a pipe; an electrolytic cell(10) in which water passing through the filter flows in; an anode plate(31) and a negative plate(32) having silver content, mounted on an electrolytic cell; a water tank(40) where water is electrolyzed in the electrolytic cell, contains the silver ion, and is saved; a flowmeter(70) installed at the electrolytic cell and the water tank; a power supply unit(110); a controller(120) controlling the power provided to an anode plate and a negative plate; and a water inflow sensing member which is installed on the pipe, senses water inflow to the electrolytic cell, transmits to the controller.

Description

Water purifier with cut-off function {WATER PURIFIER EQUIPPED IONIZER}

The present invention relates to a water purifier having a water blocking function, and more particularly, to filter out silver (Ag) nano ions by electrolysis as well as to filter out impurities or odors that are harmful to the human body through a multi-stage filter. Produce and supply to raw water to eradicate germs, suppress reproduction, and supply active hydrogen to raw water, and when it is consumed, it is equipped with an electrolytic cell that can discharge the active oxygen inside the body, but it is an external factor (water tank cleaning, etc.). In the event of a singular situation caused by a), electrolysis is prevented from occurring, preventing excess silver ions from being produced.

The present invention relates to a water purifier having a water-blocking function in which the silver (Ag) component of one of the pole plates is not first disappeared by periodically changing the polarity of the power applied to the positive and negative pole plates.

As is well known, tap water caused by by-products caused by environmental pollution and pollution is very low in purity. Recently, the importance of water purifier and bottled water is rapidly increasing due to the importance of water.

Along with cooking, water used for showering, massage, and medical treatment also has a direct effect on the skin upon contact with the skin, which can cause skin diseases depending on the ingredients contained in the water. Therefore, the importance of water is increasing.

Due to the increased interest in health, water purifiers that introduce ultraviolet lamps for sterilization as well as filters for removing impurities or odors have been released.

Ultraviolet lamps have excellent instantaneous sterilizing power, but since sterilizing water is not present in the sterilizing water stored and supplied to the reservoir after sterilization, they are exposed to general bacteria and biological contamination. That is, bacteria and microorganisms exist in the storage tank due to the presence in the atmosphere or the surrounding environment, or the water in the storage tank is recontaminated by untreated microorganisms through an ultraviolet sterilizer. Regrowth of bacteria occurs.

In order to supplement the problems of the ultraviolet lamp system, a water purifier for introducing functionality into electrolyzer has been recently proposed.

Examples of the water purifier provided with such an electrolytic cell include the registration room No. 0392681 "electrolytic water purification system", the registration room No. 0412166 "water purifier attached ionizer", and the like.

General electrolytic water purifiers including the two patents are provided with a flow rate sensor in the electrolytic cell so that electrolysis is performed when raw water is filled in the electrolytic cell more than a predetermined time. Thus, in case of external water shortage situation (for example, if the supply of raw water is blocked for water purifier maintenance, the supply of water (raw water) is blocked by water resources construction, or the supply of raw water is blocked for water pipe replacement, etc.) ), If the electrolyzer is filled with raw water, electrolysis is performed, causing unnecessary power consumption, and excessive silver ions may be generated.

Therefore, it is preferable to check whether the raw water flows into the electrolyzer as well as the amount of the cloud filled in the electrolyzer to control the electrolysis. However, the conventional water purifier does not have such a function (that is, a single cutoff function).

In addition, the two patents provide a positive electrode and a negative electrode plate inside the electrolytic cell, and supply the power to the two electrode plates so that the electrolysis is performed to supply silver ions to the raw water.

The two patents continuously apply power of the same polarity to the positive electrode plate and the negative electrode plate, so that the silver of the positive electrode plate gradually disappears, but the silver of the negative electrode plate hardly changes or increases. This results in a short period of time for the continuous production of silver ions with the two pole plates, and the replacement of the two pole plates together, even though the negative plate continues to be used, is a waste of resources.

The present invention has been made to solve the above problems, check whether or not the raw water is introduced into the electrolytic cell through the pipe so that the electrolysis is carried out only when the raw water is introduced and there is no inflow of raw water for a certain time Even if the electrolyzer is filled with raw water, electrolysis does not occur, reducing power consumption, preventing excess silver ions from being generated, and periodically changing the polarity of the power applied to the two plates to supply silver ions for a longer time. It is an object of the present invention to provide a water purifier with a singular cutoff function that reduces unnecessary waste of resources.

Water purifier with a single cut off function of the present invention for achieving the above object

A filter for filtering a specific component of raw water introduced through the pipeline;

An electrolytic cell that temporarily stores raw water that has passed through the filter;

A positive electrode plate and a negative electrode plate having a component of silver (Ag) mounted on the electrolytic cell;

A reservoir for electrolyzing in the electrolytic cell to store raw water containing silver (Ag) ions;

A flow rate sensor installed in the electrolytic cell and the reservoir to detect an amount of raw water introduced;

A power supply unit supplying power to the positive electrode plate and the negative electrode plate, and the pump;

A controller which receives a signal from the flow sensor of the electrolytic cell and controls the power supplied by the power supply unit to the positive electrode plate and the negative electrode plate;

A raw water inflow detecting member installed on the pipe to sense the inflow of raw water into the electrolytic cell and to transmit the raw water to the controller;

The controller is characterized in that the power supply to the positive electrode plate and the negative electrode plate of the power supply unit is cut off when there is no raw water inflow signal for a predetermined time from the raw water inflow detection member.

And the raw water inflow detection member

A body having an inlet and an outlet through which the pipeline is connected and introduced and discharged from raw water, and an opening communicating with the inlet and the outlet;

A cover covering the opening and coupled to the body;

A diaphragm provided in the opening and expanded by water pressure of raw water flowing in;

A pressing member which is provided inside the cover and moves forward and backward as the diaphragm is expanded;

It is provided on the outside of the cover, it is operated by the forward contact of the pressing member to detect whether the inflow of raw water, characterized in that it comprises a detection sensor for transmitting the detection signal to the controller,

The power supply unit supplies a constant current to the electrode plate during the electrolysis in the electrolytic cell,

The controller is characterized in that the power supply periodically changes the polarity of the power supplied to the positive and negative plates,

The power supply unit

A constant voltage unit for supplying the control unit, the display unit, and the polarity converting unit to a constant voltage input commercial AC power;

An insulated transformer receiving a commercial AC power and having a primary side and a secondary side electrically separated from each other,

A smoothing part for smoothing the output power of the insulation transformer;

It includes a constant current portion for supplying to the positive electrode plate and the negative electrode plate of the electrolytic cell by constant current output power of the smoothing unit,

The controller

A number of buttons for the user's operation,

A display unit for displaying the operation status,

A polarity conversion unit for periodically switching the polarity of the power supplied by the power supply unit to the negative electrode plate and the positive electrode plate;

And a controller for receiving a signal from the button unit and the flow sensor, and controlling the display unit and the polarity change unit according to the input signal and a predetermined program.

The present invention having the configuration as described above is to filter out harmful components from raw water through a multi-stage filter, to produce silver ions through the electrolytic cell to elute the raw water to suppress the eradication and reproduction of bacteria to benefit the health of the user.

In addition, it checks whether the raw water flows into the electrolytic cell through the raw water inflow sensing member, and if the raw water does not flow for a certain period of time, that is, when the singular situation occurs due to external factors, the electrolysis is not performed and unnecessary power consumption is performed. To prevent excess silver ions from being produced.

In addition, stable and continuous electrolysis is achieved by the constant current control method, and the polarity of the electrode plate is periodically changed to generate ions more efficiently, but the service life of the electric plate is long.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

1 is a schematic block diagram (FIG. 1A) and a configuration diagram (FIG. 1B) of a water purifier having a water blocking function according to the present invention, FIG. 2 is a perspective view of an electrolytic cell, and FIG. 3 is a perspective view of a raw water inflow member.

As shown in the figure, the water purifier of the present invention, the electrolytic cell 10, the positive electrode plate 31 and the negative electrode plate 32, the reservoir 40, the pump 50, the flow sensor 70, the filter 90, raw water inflow detection It includes a part 80 and the circuit unit 100 including the power supply 110 and the controller 120, these are embedded in the case (1) and protected.

In addition, the front surface of the case 1 is provided with a drainage cock 2 for discharging hot water and cold water. In addition, the reservoir 40 in the case is connected to the cold water tank (5) for storing cold water and the hot water tank (6) for storing hot water, and the cold water tank (5) and hot water tank (6) and drainage coke (2). The drain valves 3 and 4 are mounted on the pipes connecting the c).

 For reference, the arrangement of the filter 90 and the electrolytic cell 10 may be changed on the conduit. Thus, Figure 1A shows a filter in front of an electrolyzer, and Figure 1B shows a filter behind an electrolyzer.

The filter 90 is installed at the inlet or outlet of the electrolytic cell 10 or the reservoir 40 to filter not only particulates (fine dust, suspended matter, etc.) contained in the raw water flowing through the pipe, but also certain harmful components.

The filter 90 includes a precipitation filter for removing various debris and fine impurities such as rust, soil, and dust as a filter such as a pretreatment filter;

Sun carbon filter that adsorbs and removes odor using adsorption method of activated carbon,

It is a fibrous filtration membrane like a hollow fiber membrane filter, and the surface pores are ultra-precise, which can filter out harmful gates and make mineral components from living water (raw water),

The final stage of the filter unit may remove the unpleasant taste, odors, etc. remaining in the water to maintain the water taste properly, and may remove the pigment components and the like may include a carbon filter after the odorless clean water.

The electrolyzer 10 is a place where raw water passing through the filter 90 is temporarily stored therein and is electrolyzed. Of course, when the filter is installed on the reservoir side, raw water that does not pass through the filter is introduced.

And the electrolytic cell 10 is connected to the water supply pipe 11 is connected to the pipe line and the raw water is introduced, the drain pipe 13 for discharging the raw water to the reservoir 40 is connected, the amount of raw water filled in the electrolytic cell 10 A flow rate sensor 70 for sensing is mounted, and two pole plates 31 and 32 for electrolysis are alternately arranged.

The positive electrode plate 31 and the negative electrode plate 32 may be in the form of a plate containing a silver (Ag) component and may be in the form of silver plated on the surface of a pure silver (Ag) plate or a conductive material. In addition, the positive electrode plate and the negative electrode plate are for distinguishing the two electrode plates, and the positive electrode (+) power is applied to the positive electrode plate, and the negative electrode (−) power is not applied to the negative plate.

Silver ions are supplied to the raw water by the electrolysis of the two electrode plates 31 and 32. There are many types of ionized water with bactericidal function. Among them, silver (Ag) nano ions are known to be excellent because they have excellent bactericidal ability and stop the reproduction of enzymes involved in the metabolism of bacteria. have.

In the case of the pole plates 31 and 32 plated with silver (including pure silver plate), the plated silver Ag is electrolyzed in the pole plates 31 and 32 to which a positive current is applied. In the pole plates 31 and 32 to which Ag) ions and electrons are generated and a negative current is applied, hydrogen ions dissolved in raw water are generated in the pole plates 31 and 32. Reduction reaction occurs in which hydrogen gas is combined with electrons. A small amount of silver (Ag) ions generated in the positive polarity may be adsorbed onto the negative polar plates 31 and 32.

Therefore, if the polarity of one of the pole plates 31 and 32 is maintained at the same polarity for a long time, and the electrolysis becomes thicker, the positive pole plates 31 and 32 become thinner due to the disappearance of the plated silver and the negative polarity. The pole plates 31 and 32 of the plated silver become thick or unchanged or rather stretched.

Thus, although the positive polar plates 31 and 32 are plated with a sufficient amount of silver, the positive polar plates 31 and 32 do not have silver and thus do not emit silver ions. The timing will be advanced.

In order to solve this problem, it is desirable to periodically change the polarity of the pole plates 31 and 32 so that the silver plated on the two pole plates 31 and 32 dissipate at a similar speed. The controller 120 controls the supply of power so that the polarities of the pole plates 31 and 32 are periodically converted.

The reservoir 40 passes temporarily through the filter 90 and the electrolytic cell 10 to temporarily store the crude oil containing silver ions, and is discharged for drinking by the user's operation.

The raw water inflow detecting member 80 is installed on a pipeline connected to the water supply pipe 11 of the electrolytic cell 10 to detect whether raw water flows into the electrolytic cell, and transmits the detected signal to the controller, thereby introducing raw water. If it does not flow in for a certain period of time, the controller recognizes this as an external singular situation and controls the power supply unit so that electrolysis is not performed even if raw water is filled in the electrolytic cell.

The raw water inflow detecting member 80 has a body 81, a cover 83, a diaphragm 85, and a pressing member as shown in FIG. 3 showing a combined perspective view (FIG. 3A) and an exploded perspective view (FIG. 3B). 87, the sensor 89, the cap 88 is made.

The body 81 is provided with an inlet 81a and an outlet 81b through which the pipeline is connected and the raw water is introduced and discharged, and the inlet 81a and the outlet 81b and the inner side of the body 81. An internal space portion 81c communicating with the introduced raw water is temporarily provided, and the internal space portion 81c is opened to the outside. That is, the inner space has an opening 81d.

And in the center of the inner space portion 81c the raw water introduced through the inlet pipe is hit, a cylinder 82 is formed so that the impacted raw water is rotated along the outer wall, the center inside of the cylinder 82 is the outlet The discharge space 82c is formed in communication with.

By forming the cylinder 82 having the discharge space 82c at the center of the inner space 81c, the raw water introduced from the inlet 81a pushes the diaphragm 85 coupled to the opening 81d more strongly. (Expanded).

The cover 83 is coupled to the body 81 while covering the opening 81d and has an accommodating portion 83a in which the pressing member 87 is accommodated.

The diaphragm 85 is provided between the cover 83 and the body 81. That is, the opening 81d of the inner space portion is closed.

In addition, the diaphragm 85 is expanded toward the cover 83 by the hydraulic pressure of raw water introduced into the inner space portion 81c of the body.

The pressing member 87 is received in the inner receiving portion 83a of the cover 83 so as to be moved forward and backward, and is coupled with the protrusion 85a protruding in the center of the diaphragm expanded by the hydraulic pressure of the raw water. It moves forward and backward in conjunction with the expansion of the frame 85.

In addition, a pressure protrusion 87a is formed on the opposite surface of the diaphragm 85 to contact and press the sensing sensor 89.

The cap 88 is coupled to the outside of the cover 83, the inside of the detection sensor 89 is built.

And the built-in sensor 89 is operated by the advance of the pressure projection (87a) of the pressing member 87, detects whether the raw water is introduced, and transmits the detected signal to the controller 120 do.

The detection sensor is provided with a contact portion 89a which is pressed against the pressure protrusion.

4 is a schematic block diagram of a circuit portion of a water purifier according to the present invention, and a, b and c of FIG. 5 are more specific circuit diagrams.

As shown in the drawing, the circuit unit 100

A power supply unit 110 for supplying power to the two pole plates of the electrolytic cell by constant current inputting commercial AC power, and supplying driving power to a control unit, a pump, etc.

The power supply unit includes a controller 120 which controls the circuit unit as a whole, such as controlling power supplied to the two pole plates, driving a pump, and displaying an operating state.

The power supply 110 includes two pole plates 31 and 32 and a pump 50 to supply power where power is needed, and the supply of power is controlled by the controller 120.

The power supply unit 110 is a constant voltage unit 111 for outputting a constant voltage to the commercial AC power input;

A constant current is supplied from the commercial transformer power source, the insulation transformer T having primary and secondary sides electrically separated from each other, the smoothing unit 113 for smoothing the output power of the insulating transformer T, and the output power of the smoothing unit. And a constant current section 115 for supplying the two pole plates 31 and 32 (anode plate and cathode plate) of the electrolytic column.

The constant voltage unit 111 supplies driving power to the control unit 121, the pump 50, the display unit 123, and the like, and in the present invention, the constant voltage unit generates and supplies two constant voltages of 24V and 5V.

The insulation transformer T electrically separates an input side (primary side) and an output side (secondary side) to prevent a user from electric shock.

The smoothing unit 113 is composed of a bridge diode (BD) and a capacitor (C1) to smooth the output power of the insulation transformer to supply to the constant current unit.

The constant current unit 115 constant currents the output power of the smoothing unit 113 so that a current having a constant magnitude is always supplied to the two pole plates 31 and 32 of the electrolytic cell 10.

The constant current unit 115 is a shunt regulator (SR) for maintaining a constant voltage of both ends regardless of the load fluctuations,

A resistor R1 connected in parallel to the shunt regulator SR to determine the magnitude of the constant current supplied to the load side (two pole plates of the electrolytic cell);

And a transistor that protects the shunt regulator by preventing a current above the allowable value from flowing into the shunt regulator SR.

The shunt regulator (SR) is representative of 'TL431'.

For example, when the rated voltage maintained at both ends of the shunt regulator SR is 2.4V and the current to be supplied to the two pole plates of the electrolytic cell is 40 mA, a resistance of 60 ohms R1 across the shunt regulator SR is R1. ), Both pole plates are continuously supplied with 40 mA.

The controller 120 includes a plurality of buttons 122, a display unit 123, a memory 124, a voice output unit 125, a polarity conversion unit 127, a control unit 121, and a pump driving unit 126. Is done.

The button 122 is for the user's operation, the user operates the button to set the electrolysis time, the strength of the constant current supplied to the two pole plates (31, 32), and drive the pump 50 to store the reservoir ( Operations such as discharge of raw water stored in 40) can be performed.

The button 122 is connected to the control unit and transmits various operation signals to the control unit. As the button, a touch switch (TS1 ~ TS6) for detecting the user's pressing by changing the capacitance or impedance by the user's touch was used, and the touch switch sensing IC (U1) is a button as the touch switch is used as the button. The touch switch 122 and the controller 121 are connected. The touch switch sensing IC U1 is driven by receiving a driving voltage from the constant voltage unit 111.

The display unit 123 displays an operation state or an operation state of a button so that the user can recognize it. The display unit includes segments (Seg1, Seg2) for displaying the status by numbers, and LEDs (light emitting diodes) L1 to L14 for displaying the status by flashing lamps, which are not shown in the drawings, but are displayed in text on the screen. LCD screen may be included.

The segments Seg1 and Seg2 are connected to the control unit 121 to display the set electrolysis time of the two electrode plates, the remaining electrolysis time during electrolysis, and other matters that can be displayed numerically, such as the current time. Inform the user.

The LED (L1 ~ L14) is lit or flashing to indicate the operating state of the water purifier.

A power lamp indicating whether power is supplied to the LEDs L1 to L14,

A water supply indicating whether the pump 50 is driven to supply raw water to the electrolytic cell 10, discharged from the electrolytic cell 10 to the water tank 40, or whether the raw water is discharged from the reservoir 40 to the outside. Lamps, drainage lamps,

A filter lamp indicating whether the filter 90 has reached the end of its life,

An electrolysis indicator lamp for indicating whether electrolysis is being performed,

Voice display unit for displaying whether the announcement is output through the voice output unit 125,

There is a remaining time notification lamp for indicating the remaining electrolysis time during the electrolysis time in large, medium, and small.

The memory 124 is connected to the control unit 121, the guidement for the various signals input through the button 122, the guidement for the supply and drainage state according to the operation of the pump 50, electrical A guide message indicating a disassembly state, a guide message indicating whether or not the filter 90 is replaced, and the like may be stored, and a program necessary for operation of other water purifiers may be stored.

The voice output unit 125 is connected to the control unit 121, and the guidement stored in the memory 124 is output as voice according to an operation state under the control of the control unit. The voice output unit 125 is connected to the speaker (SP) for outputting voice, and the speaker to remove the noise of the voice signal input from the memory 124 through the control unit 121 and to adjust the volume of the speaker And an AMP circuit 125a that is formed at 1SP. Since the AMP circuit 125a is a conventional AMP circuit, a detailed description thereof will be omitted.

The polarity converting unit 127 periodically changes the polarity of the power supplied by the constant current unit 115 of the power supply unit to the two pole plates 31 and 32 of the electrolytic cell.

As shown in the drawing, the polarity conversion unit 127 is connected to the positive electrode plate 31 and the negative electrode plate 32 of the electrolytic cell 10, respectively, and the two relay switches connected to the negative line or the positive line of the power supply constant current unit 115. RS4 and RS5 and the two relay switches RS4 and RS5 by receiving signals from the controller 121 to connect the relay switches RS4 and RS5 to the positive line or the negative line of the constant current unit 115, respectively. It consists of two drive coils (RC4, RC5).

The pump driver 126 drives the pump 50 under the control of the controller 121 according to a signal input through the button 122 or a set condition.

The pump driving unit 126 may include relay switches RS1, RS2, and RS3 for connecting or disconnecting a pump to the constant voltage unit 111 of the power supply unit, and receiving the signals from the controller 121 and relay switches RS1 and RS2. The switch coils RS1, RS2, and RS3 are connected to the constant voltage unit 111, or the driving coils RC1, RC2, and RC3 to switch off.

The pump driving unit 126 may include a water supply pump driving unit 126a for driving a water supply pump for supplying raw water to the electrolytic cell 10, and a water extraction pump driving unit for driving an extraction pump for extracting raw water stored in the storage tank to the outside ( 126b) and a drain pump driver 126c for driving a drain pump (or drain valve) for draining the raw water of the electrolytic cell to the reservoir.

When the controller 120 receives a signal indicating that the raw water is filled to a predetermined level or more from the flow sensor 70 installed in the electrolytic cell 10, the constant current unit supplies power to the two pole plates 31 and 32. So that electrolysis is done,

If there is no signal of inflow of raw water from the raw water inflow detecting member for more than a predetermined time, the electrolysis is stopped by interrupting the power supply to the two pole plates of the power supply unit even if the raw water is filled in the electrolytic cell above a certain level.

Drain the raw water from the electrolyzer into the reservoir.

In addition, the power supply unit 110 supplies a stable and continuous constant current power to the pole plates 31 and 32 of the electrolytic cell 10 by the constant current control method, and the polarity conversion unit 127 of the controller 120 is the pole plate 31, 32) Periodically change the polarity of the constant current supplied to the 32 to prevent the metal plated on certain pole plates 31 and 32 from being released and extinguished faster than the metal plated on the other pole plates 31 and 32 by electrolysis. do.

The constant current control method of the power supply unit 60 has a more complicated circuit than the constant voltage control method, but can be stably supplied with less influence due to external factors, prevent overheating, and affect the temperature of the water (generally, a chemical reaction). (Electrolysis) has the advantage of generating a constant concentration of ions almost without being affected by the temperature of the water. In addition, the power supply unit 60 may control the concentration of the silver ions generated by the pole plates 31 and 32 by adjusting the intensity of the constant current supplied to the electrolytic cell 10 by the controller 120.

In the above description of the present invention, a water purifier having a single cut-off function having a specific shape and structure has been described with reference to the accompanying drawings, but the present invention can be variously modified and changed by those skilled in the art. It should be interpreted as falling within the protection scope of the present invention.

1, a and b is a schematic block diagram and configuration diagram of a water purifier with a water blocking function according to the present invention.

2 is a perspective view of an electrolytic cell.

Figure 3 is a perspective view of the raw water influx member.

4 is a schematic block diagram of a circuit portion according to the present invention;

5, a, b, and c are detailed circuit diagrams of FIG.

<Description of the symbols for the main parts of the drawings>

10: electrolytic cell 31,31: electrode plate

40: reservoir 50: pump

80: raw water inflow detection member 81: body

83: cover 85: diaphragm

87: pressing member 89: detection sensor

90 filter 100 circuit part

110: power supply unit 111: constant voltage unit

115: constant current unit 120: controller

121: control unit 122: button

123: display unit 124: memory

125: voice output unit 127: polarity conversion unit

Claims (4)

A filter for filtering a specific component of raw water introduced through the pipeline; An electrolytic cell that temporarily stores raw water that has passed through the filter; A positive electrode plate and a negative electrode plate having a component of silver (Ag) mounted on the electrolytic cell; A reservoir for electrolyzing in the electrolytic cell to store raw water containing silver (Ag) ions; A flow rate sensor installed in the electrolytic cell and the reservoir to detect an amount of raw water introduced; A power supply unit supplying power to the positive electrode plate and the negative electrode plate, and the pump; A controller which receives a signal from the flow sensor of the electrolytic cell and controls the power supplied by the power supply unit to the positive electrode plate and the negative electrode plate; A raw water inflow detection member installed on the pipe to sense the inflow of raw water into the electrolytic cell and to transmit it to the control furnace; And the controller cuts off power supply to the positive and negative plates of the power supply unit when there is no source water inflow signal from the raw water inflow detecting member for a predetermined time. According to claim 1, wherein the raw water inflow detection member A body having an inlet and an outlet through which the pipeline is connected and introduced and discharged from raw water, and an opening communicating with the inlet and the outlet; A cover covering the opening and coupled to the body; A diaphragm provided in the opening and expanded by water pressure of raw water flowing in; A pressing member which is provided inside the cover and moves forward and backward as the diaphragm is expanded; It is provided on the outside of the cover, it is operated by the forward contact of the pressing member to detect the inflow of raw water, and has a singular blocking function characterized in that it comprises a detection sensor for transmitting the detection signal to the controller. One water purifier. The method according to claim 1 or 2, The power supply unit supplies a constant current to the electrode plate during the electrolysis in the electrolytic cell, The controller is characterized in that the water supply unit with a water blocking function characterized in that for periodically changing the polarity of the power supplied to the positive and negative plates. The method of claim 3, wherein The power supply unit A constant voltage unit for supplying the control unit, the display unit, and the polarity converting unit to a constant voltage input commercial AC power; An insulated transformer receiving a commercial AC power and having a primary side and a secondary side electrically separated from each other, A smoothing part for smoothing the output power of the insulation transformer; It includes a constant current portion for supplying to the positive electrode plate and the negative electrode plate of the electrolytic cell by constant current output power of the smoothing unit, The controller A number of buttons for the user's operation, A display unit for displaying the operation status, A polarity conversion unit for periodically switching the polarity of the power supplied by the power supply unit to the negative electrode plate and the positive electrode plate; And a control unit for receiving a signal from the button unit and the flow sensor and controlling the display unit and the polarity change unit according to the input signal and a predetermined program.

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