KR101614014B1 - automatic water purifying system and controlling method for the same - Google Patents

Abstract

According to one aspect of the present invention, there is provided an ion exchange membrane comprising: a cation exchange membrane and an anion exchange membrane disposed in respective ribs; a spacer disposed in each of the ribs; and two outflow holes formed in the upper and lower ends, The inflow water inputted into the one side inflow hole is discharged through the one side inflow hole of the opposite side inputted along the slot of the spacer from which the ions are removed and the inflow water introduced into the other side inflow hole is discharged through the slot of the spacer And the ion-enriched water is discharged through one inlet / outlet hole of the opposite side of the input unit. A control unit including solenoid valves for controlling the influent water, purified water discharge line and ionized water discharge line, and controlling the supply voltage; A solenoid valve for connecting or disconnecting the inflow hole, the inflow water line, the purified water discharge line, and the ionized water discharge line of the electrodialyzer and a valve module modularized into a hexahedral structure; And an outflow purity sensor for controlling outflow purity in the purified water discharge line; Wherein the control unit controls to discharge the purified water and the concentrated ionized water discharged from the electrodialyzer sequentially in different inflow and outflow bins according to four types of purified water administrations, And the concentration of the outflow of the purified water discharge line is automatically controlled so as to be finally discharged.

Description

[0001] The present invention relates to an automatic water purifying system and a method for controlling the same,

The present invention relates to an automatic water purification apparatus and method for automatically purifying and discharging water of a predetermined purity.

Generally, in order to obtain clean drinking water, water purifier is widely used to purify raw water taken and to use clean water as drinking water.

In order to remove anionic contaminants such as nitrate nitrogen and perchlorate in water treatment, reverse osmosis such as water purifier, electrodialysis using ion exchange resin, nanofiltration and reverse osmosis are mainly applied.

The reverse osmosis water purifier has a higher water purification level than a water purifier that does not use a membrane filter. However, proper water pressure is required to obtain a certain level of water purification efficiency, and water purification efficiency is generally low due to low water purification flow rate.

In the reverse osmosis process, nanofiltration can remove nitrate nitrogen or perchlorate with high efficiency at an operating pressure of 6 to 10 atm. However, due to limitations of the process itself, it is difficult to improve the recovery rate of treated water to 80% The processing cost is higher than other existing water treatment methods.

The electrodialysis method using ion exchange resin has a relatively high treatment efficiency compared with the reverse osmosis process. However, the ion exchange resin method is problematic in that clogging of the resin membrane pores of ion exchange resin and clogging of internal pipes due to ion scale etc. The maintenance may be difficult.

In addition, the conventional ion purifier may vary in the amount of impurities in purified water depending on the characteristics of water to be obtained, which may be difficult to use in a device requiring a constant purity.

A conventional technique for this is disclosed in Korean Patent Publication No. 10-0521628.

Korean Patent Publication No. 10-0521628

It is an object of the present invention to provide an automatic water purification apparatus capable of adjusting the integer purity according to the user's use and automatically controlling the integer within the set purity and displaying the purity of the water to be purified .

It is still another object of the present invention to provide an automatic water purifying apparatus capable of suppressing generation of ion scales in an electrolytic dialysis apparatus internal water channel and preventing clogging of pores of an ion exchange membrane, thereby improving water purification efficiency and prolonging the service life .

It is still another object of the present invention to provide an automatic water purification apparatus that displays an effective use time of a filter used in a purification process and causes an alarm to be generated when a user lapses.

According to one aspect of the present invention, there is provided an ion exchange membrane comprising: a cation exchange membrane and an anion exchange membrane disposed in respective ribs; a spacer disposed in each of the ribs; and two outflow holes formed in the upper and lower ends, The inflow water inputted into the one side inflow hole is discharged through the one side inflow hole of the opposite side inputted along the slot of the spacer from which the ions are removed and the inflow water introduced into the other side inflow hole is discharged through the slot of the spacer And the ion-enriched water is discharged through one inlet / outlet hole of the opposite side of the input unit. A control unit including solenoid valves for controlling the influent water, purified water discharge line and ionized water discharge line, and controlling the supply voltage; A solenoid valve for connecting or disconnecting the inflow hole, the inflow water line, the purified water discharge line, and the ionized water discharge line of the electrodialyzer and a valve module modularized into a hexahedral structure; And an exhaust constant purity sensor for measuring the concentration of the purified water outflow at one side of the purified water discharge line; Wherein the control unit controls to discharge the purified water and the concentrated ionized water discharged from the electrodialyzer sequentially in different inflow and outflow bins according to four types of purified water administrations, And the concentration of the outflow of the purified water discharge line is automatically controlled so as to be finally discharged.

The water purifier according to one embodiment of the present invention can be used in a water purifier according to an embodiment of the present invention. The water purifier according to an embodiment of the present invention can be used to purify polluted water containing polluted water or nitrate nitrogen, ), And by performing the constant-stroke control, the outgoing water can be adjusted to be discharged from various sources such as pure water to drinking water.

Further, by controlling the duty ratio of the square wave to be increased to increase the current intensity until the desired purity (TDS), which is the desired purity, is reached, and when the set ppm is exceeded, the duty ratio is controlled to be kept low to maintain the appropriate ppm with the optimum energy, Appropriate energy is distributed according to the concentration of raw water, and unnecessary energy waste can be reduced.

According to an embodiment of the present invention, by changing the flow direction of the washing water and the flow direction of the water to be purified into four pattern strokes having a periodic interval set to be smaller than a period during which the scale can be formed, And scales are prevented from being formed in the internal piping, so that the high water purification efficiency can be always maintained even when used for a long time.

According to an embodiment of the present invention, by periodically changing the polarity of the positive polarity and supplying the polarity of the negative polarity voltage, the ion attracted to the membrane hole and the channel gap is moved in the opposite direction The lifetime can be prolonged while maintaining a high water purification efficiency, and the maintenance cost can be saved.

According to an embodiment of the present invention, the user is informed of the use time or the usable time of the filter, and the user is informed by alarm or indication that the filter is to be replaced at an appropriate time, The purified water quality can be maintained at a constant level.

FIG. 1 is a view for explaining the constant flow of an automatic water purification apparatus according to an embodiment of the present invention.
2 is a view for explaining an internal structure of an electrodialyzer according to an embodiment of the present invention.
3 illustrates a structure of spacers 1 and 2 according to an embodiment of the present invention.
4 shows the structure of the ion exchange membrane.
FIG. 5 illustrates a configuration of a control unit according to an embodiment of the present invention.
6 to 9 illustrate a method for controlling the flow of water in an electrodialyzer according to an embodiment of the present invention.
FIG. 10 shows a flowchart of a sequential integral stroke control according to an embodiment of the present invention.
11 illustrates an input display according to an embodiment of the present invention.
12 shows a structure of an automatic water purification apparatus according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of an automatic water purification apparatus according to the present invention will be described in detail with reference to the accompanying drawings. Referring to the accompanying drawings, the same or corresponding components are denoted by the same reference numerals, Is omitted.

FIG. 1 is a view for explaining the constant flow of an automatic water purification apparatus according to an embodiment of the present invention.

1, an automatic water purification apparatus 1 according to an embodiment of the present invention is configured such that the water obtained through the pre-treatment filters 151 and 152 and the static pressure valve unit V11 passes through the valve module to the electrodialyzer 5, And the output water purified and output in the electrodialyzer 5 is filtered by the post-treatment filters 153 and 154 through the valve module, and then stored in the purified water tank.

According to one embodiment of the present invention, the pretreatment filter includes a sediment filter 151 and a hollow fiber filter 152.

The pretreatment filter is a filtering device that removes suspended solids, iron powder, scale, and suspended solids that dissolve, damage, or deteriorate ion exchange properties of the ion exchange membrane. It removes various contaminants (suspended matter) and sand, bacteria, rust, debris, etc. that remain in the raw water.

 The sediment filter (151) has a mechanical filtering action and is formed of a corrugated film type or bubble type fiber type, and is used to remove dust and other particles present in water. A commonly used sediment filter has an effective water flow rate of 3000L.

The hollow fiber membrane filter (U / F filter) performs the function of removing bacteria, residual rust, and fine debris by fine pores of 0.01 to 0.04 micron or less. A commonly used hollow fiber membrane filter has an effective water flow rate of 11,000 liters.

According to one embodiment of the present invention, the post-treatment filter includes an activated carbon filter 153 and a hollow fiber filter 154 (U / F filter).

The post-treatment filter functions to remove bacteria and fine impurities contained in the purified water.

The activated carbon filter (153 filter) functions to remove bacteria, fine impurities and remaining harmful chemicals contained in purified water.

The constant-pressure valve device (V11) is a pressure regulating device such as a constant-pressure valve, a pressure-reducing device, etc., which can regulate the supply pressure of the raw aqueous solution supplied from the raw water to an input pressure suitable for the environment of use of the electrodialyzer. The hydraulic pressure of the constant-pressure valve apparatus V11 is controlled to 1 kg / cm < 2 >.

According to an embodiment of the present invention, a raw water detection sensor PS1 may further be provided at a front end of the constant-pressure valve apparatus V11. In an embodiment of the present invention, a pressure sensor is used as the raw water sensor PS1, and when the pressure is less than 0.3 kg / cm2, it is determined that the raw water is not supplied continuously and the operation is stopped.

In addition, a raw water concentration measuring sensor TS4 may be further provided on the upstream side of the pre-processing filter unit. In an embodiment of the present invention, when the raw water is used for drinking water or pure water, if the raw water exceeds 5000 ppm, the purification time may take a long time and the filter may become clogged and uneconomical. In an embodiment of the present invention, the control unit 100 is controlled so that the inlet valve V1 is closed and the purification stroke operation is stopped when the sensor signal of the inlet sensor exceeds 5000 ppm on the inlet side.

The electrodialyzer is formed by laminating electrolytic cells disposed between the positive electrode plate and the negative electrode plate so as to form an anion-selective ion exchange membrane (hereinafter referred to as "anion exchange membrane") and a cation-selective ion exchange membrane (hereinafter referred to as "cation exchange membrane" , Electrodes are connected to both ends of the stacked electrolytic cell, or to both ends of the intermediate layer.

When positive and negative power sources are applied to the electrodes, impurities contained in the solution are ionized by the electric field applied to both ends.

Cations in the dissolution liquid migrate through the cation exchange membrane, and the anions permeate through the anion exchange membrane. The electrolytic cell on one side of the membrane is removed in a state in which the ion concentration is thinned while the ions are moved so that the water passing through the electrolytic cell is purified and the electrolytic cell on the other side of the membrane is permeated by ions, Water flows.

The electrolytic cell in which the concentration is collected and the electrolytic cell in which the concentration is removed are laminated so as to form a layer alternately, and electrolytic cells (hereinafter referred to as "ion removal cell" The purified water purified from the ions can be output from the final inlet and outlet holes of the ion electrolytic cell.

In addition, electrolytic cells (hereinafter referred to as "ion collecting cells") in which such ions are collected and concentrated are alternately layered and laminated, and collecting ions at every layer by connecting the ion collecting cell layers, At the final effluent inlet, the ions will be able to discharge concentrated ionic water.

The ion collecting cell and the ion removing cell of the electrodialyzer are disposed in a separate layer to increase the contact between the ion exchanger particles and other ion exchanger particles and the contact with the ion exchange membrane, Can be obtained.

2 is a view for explaining an internal structure of an electrodialyzer according to an embodiment of the present invention.

The electrodialyer 5 according to the embodiment of the present invention includes first and second electrode plates 21 and 21-1 provided on the upper and lower pressing plates respectively and a third electrode plate on the middle portion and alternately (31, 32) respectively formed with guide holes selectively connected to the inflow hole and the outflow hole while being connected to the guide holes of the spacer while being installed between the spacers (1, 2) And ion exchange membranes 41 and 51, respectively.

In one embodiment of the present invention, when a voltage is supplied in the direction of the positive polarity, the first and second electrode plates are supplied with a positive (+ polar) square wave and the third electrode plate is supplied with a square wave having a negative voltage.

In another embodiment, a square wave of positive polarity voltage may be supplied to the first and second electrode plates, and a zero potential may be supplied to the third electrode plate.

In one embodiment of the present invention, when supplying a voltage in the reverse polarity direction, the first and second electrode plates are supplied with a negative (- polar) square wave and the third electrode plate is supplied with a square wave having a positive polarity voltage. Alternatively, a square wave having a negative electrode voltage may be supplied to the first and second electrode plates, and a zero potential may be supplied to the third electrode plate.

The supply voltage according to an embodiment of the present invention is supplied as a square wave and may be any one of 12 [V], 24 [V], and 48 [V].

However, the supply voltage can be selectively used in the range of 12 [V] to 250 [V] depending on the required purity and capacity of the constant.

Referring to FIG. 2, the cation exchange membrane 41 and the anion exchange membrane 51 are alternately arranged one after the other between the spacers 1 and 2 (31 and 32).

FIG. 3 illustrates the structure of spacers 1 and 2 according to one embodiment of the present invention, and FIG. 4 illustrates an ion exchange membrane.

The spacer according to an embodiment of the present invention includes a cation exchange membrane or anion exchange membrane inside and an outer rib 60 is formed along the circumference to maintain water tightness of the outside.

In the spacer, a slot 91 for guiding the flow of water is formed in the inner side of the outer rib so as to continuously connect the entire surface in a staggered manner with the same width, and the slot 91 is formed through the spacer surface.

A guide hole 71 for guiding the inflow of water is formed in the front end of the slot which is a starting point of the slot 91 and a guide hole 72 for guiding water to flow out to the rear end of the slot 91 Respectively.

In addition, two guide holes 81 and 82 for guiding the introduction of other types of water are formed at positions symmetrical to the guide holes 71 and 72 and the center line.

The spacer is divided into a spacer 1 type and a spacer 2 type according to the position of the guide hole, and the spacer 1 type and the spacer 2 type are each rotationally symmetrical by 180 degrees.

According to an embodiment of the present invention, the spurs 1 and 2 are alternately stacked so that the water flowing into the spacer 1 is entirely connected to the water channel through the guide hole and flows through the spacer 1, And the water channel flows to the spacer B through the guide hole.

Between the spacer 1 and the spacer 2, the cation exchange membrane 41 and the anion exchange membrane 51 are alternately arranged one after the other.

Two outflow holes (outflow holes 1 and 2) and two outflow holes (outflow holes 3 and 4), respectively, are formed in the upper portion of the electrodialyzer, and the outflow holes 1 and 3 are connected to a channel of the spacer 1 And the inlet and outlet holes 2 and 4 are connected to both ends of the spacer 2 connecting the water channels.

That is, according to an embodiment of the present invention, four outflow holes are formed in each of two upper and lower ends of the electrodialyzer, and when the inflow water is inputted into two outflow holes at the upper end or the lower end during the water purification stroke, According to the direction of the anion exchange membrane and the electric field applied to the anion exchange membrane, one of the two outflow holes discharges the purified water to one of the upper and the lower outflow holes along the slot of the spacer from which the ions are removed, And the ion-enriched water is discharged through the inlet and outlet holes on the other side of the upper part along the slot of the collected spacer.

FIG. 5 illustrates a configuration of a control unit according to an embodiment of the present invention.

The control unit 100 is provided with a valve control unit 110 for controlling the opening and closing of each solenoid valve through valve operation units V1 to V6 and a control unit for calculating the remaining time of the filter and displaying the remaining time display signal on the display unit 205 , A filter management control unit 111 for generating an alarm signal indicating the time of imminent replacement, and a filter unit 112 for comparing the purity measured at the outgoing constant with the demanded purity set by the user, And a PWM control unit 112 for controlling the current flowing through the electrodialyzer by sending a control signal for the duty ratio to the PWM operation unit 301 and for controlling the polarity of the voltage supplied to both electrode plates.

The control unit 100 is provided with a water level sensor 101 for sensing the full water level of the water tank, a water level sensor PS1 for sensing the water level of the water level, a ppm sensor for measuring the purity of the water level, TS1 to TS3), and a current sensor 102 for measuring currents of both electrode plates are connected.

The control unit 100 also includes an input signal unit 201 and a filter exchange input unit 203 to which input signals such as a user's constant operation command and command, setting of request purity, and remaining time of the filter are input.

The filter replacement input unit 203 may further include a filter detection sensor 202 for detecting that the filter is detached and replaced and sending a detection signal to the control unit.

6 to 9 illustrate a method for controlling the flow of water in an electrodialyzer according to an embodiment of the present invention.

6, if the first and second electrode plates supply the positive electrode voltage and the third electrode plate supplies the negative electrode voltage, when the inflow water is supplied to the inflow holes 1 and 2 (A and B) (C), the final ion-rich water is discharged, and the purified water from which ions are removed is discharged through the inflow hole 4 (D).

When the negative electrode pulses are supplied to the first and second electrode plates at this time and the inflow water is supplied to the inflow holes 1 and 2 (A and B) in the state where the positive electrode voltage is supplied to the third electrode plate, ), The purified water is discharged, and the ion-enriched water is discharged to the inflow / outflow hole 4 (D) (see FIG. 7).

At this time, when the negative pulse is supplied to the first and second electrode plates and the inflow water is supplied to the inflow holes 3 and 4 (C and D) while the positive electrode voltage is supplied to the third electrode plate, ), The final ion-rich water is discharged, and the purified water is discharged to the inflow / outflow hole 2 (B) (see FIG. 9). If the voltage is reversed at this time, the purified water is discharged to the inlet / outlet 1 (A) and the ion-enriched water is discharged to the outlet 2 (B) (see FIG. 8).

When a fixed path is taken and outflowed, contaminated water is continuously passed through the path, increasing pollution and consequently shortening the lifetime of the electrodialyzer.

According to an embodiment of the present invention, it is possible to reduce the possibility that the pollutants are fixedly adhered by renewing the intake and / or outgoing paths every predetermined time.

According to an embodiment of the present invention, by changing the water channel and the water direction of the cleansing water sequentially into four types at regular intervals, ions and impurities adhere to the cation exchange membrane and the anion exchange membrane, In addition, it is possible to prevent the scale from being formed in the slots and the inner pipe inside the spacer, thereby extending the service life of the water purifier.

According to an embodiment of the present invention, in order to control the flow of purified water and ion-enriched water sequentially in four types as described above, the valve module 10 includes an inflow water valve V1 for controlling inflow / outflow of inflow water at an inflow port, (2, 2-1) for guiding the inflow water to the inflow / outflow hole at the upper or lower end of the electrodialyzer, an upper effluent switching valve 3 for switching the effluent flowing out from the upper end of the electro- 1 (V3, V3-1), bottom outlet water change-over valves 4, 4-1 (V4, V4-1) for switching and controlling the outlet water flowing out from the lower end of the electrodialyzer, (5, 6) (V5, V6) to the purified water tank or the ion concentration tank.

FIG. 10 is a flow chart of a routine for performing a pure water injection stroke control according to an embodiment of the present invention.

First, the user turns on the power and presses the input button to input the desired purity constant. According to one embodiment of the present invention, the user can adjust the purity of the water so that the required purity can be set to be in the range of 0.01 to 500 ppm as needed.

The control unit starts the first integer stroke to control the flow of water in the first direction. 10 according to one embodiment of the present invention is controlled in the flow direction of the water in Fig.

In the first purified water processing, the positive polarity (in the present invention, the first and second electrode plates are supplied with a positive voltage and the third electrode plate is supplied with a negative voltage is described as positive polarity, and vice versa. 2 (V2, V2-1) are connected to the upper flow-in / out openings 1, 2 (A) of the electrodialyzer 5, while the inflow water solenoid valve V1 is opened with the solenoid valves 2, , B) so that the inflow water is supplied to the upper end.

The lower end effluent switching solenoid valve 4 (V4) is controlled so that the concentrated water of the inflow hole 3 (C) is directed toward the water control valve 6 (V6), and the purified water solenoid valve 6 And is directed to the water tank 15.

Also, the lower effluent water switching solenoid valve 4-1 (V4-1) is controlled to switch the purified water discharged from the inflow / outflow hole 4 (D) to the constant-flow switching solenoid valve 5 (V5) side.

At this time, the control unit 100 turns off the constant-rate switching solenoid valve 5 (V5) until the integer purity measured in the limiting constant purity ppm sensor 1 (TS1) that measures the concentration of the discharged purified water reaches the purity required by the user (In the present invention, the operation of turning on the water control valve means an operation for guiding the water passing through the water control valve to the water tank, and the off concept of the water control valve means that water flowing through the water control valve is supplied to the water tank 15 ) And discharges the purified water to the living water tank 15.

In another embodiment of the present invention, the controller 100 turns on the integral switching valve 5 (V5) until the integer purity value measured at the exhaust constant purity ppm sensor 1 (TS1) reaches the user's required purity value And the bypass valve is connected to the rear end of the water control valve 5 (V5) and bypassed to the front end of the inlet valve V1. The purified water can be recycled as the influent water rather than being discharged into the domestic water tank 15, thereby improving the water purification efficiency.

If it is determined that the integral purity value measured in the demand purity value and the purity constant ppm ppm sensor 1 (TS1) deviates by more than a certain range, the controller 100 determines that the square wave voltage supplied through the PWM controller 112 By controlling the duty ratio to be increased and the duty ratio of the supplied square wave voltage to be decreased when the difference is less than a predetermined range, the current intensity can be controlled to reduce the time required for efficient energy use and constant.

According to an embodiment of the present invention, when it is determined that the integral purity values measured in the required purity value and the purity constant ppm ppm sensors 1 and 2 differ from each other by more than a predetermined range, The duty ratio of the square-wave voltage supplied through the capacitor 112 is increased, and when the difference is within a predetermined range, the duty ratio of the supplied square-wave voltage is decreased.

According to an embodiment of the present invention, the duty ratio may be stored as a data table in which the duty ratio is quantified according to a predetermined demand purity value (input ppm value), and the PWM duty ratio of the supply voltage may be controlled according to the stored database.

In addition, the duty ratio can be quantified according to the difference between the required purity ppm and the influent water ppm, and the PWM duty ratio of the supply voltage can be controlled according to the quantified database.

The control unit 100 maintains the constant-concentration solenoid valve 5 (V5) on only when the integral purity value measured in the exhaust constant purity ppm sensor 1 (TS1) reaches the user's required purity value range, So that it is collected and stored in the purified water tank 12.

In the first cleaning cycle, the supply voltage is cut off, and the inflow water is controlled to be in the off state so that the constant-pressure switching solenoid valve 5 (V5) is turned off Water discharged to the lower end inflow / outflow holes 3, 4 (C, D) is discharged to the domestic water tank 15.

When the first cleaning cycle is completed, the first purification operation is terminated.

According to an embodiment of the present invention, the control unit controls the first to fourth integer strokes to be sequentially performed, and each of the first to fourth cleaning cycles is 1/20 to 1/10 of the first to fourth integer strokes Control is performed at intervals.

For example, the cleaning cycle is set to 2 to 3 minutes per cycle, and the integer cycle is set to 20 to 60 minutes per cycle.

Next, the control unit starts the second purification stroke to control the flow of water in the second direction at a short interval after the first purification stroke is finished.

The interval is 2 ~ 3 seconds to stabilize the flowing water and to facilitate solenoid valve and electrode conversion.

10 according to an embodiment of the present invention is controlled in the direction of the flow of water in Fig.

In the second purified water processing, the inlet valve V1 is opened while the supply voltage of the reverse polarity is applied to the electrodialyzer 5, and the bottom outlet water changeover valve 4 (V4) opens the constant flowing out from the inflow hole 3 (C) To the solenoid valve 6 (V6) side, and the ion-concentrated water flowing out from the inflow / outflow hole 4 (D) is switched to the constant-flow switching solenoid valve 5 (V5) side.

The constant-concentration solenoid valve 5 (V5) is controlled to be turned off so that the concentrated concentrated water flowing out through the solenoid valve 5 (V5) is discharged to the wastewater line or the domestic water tank 15.

At this time, the controller 100 turns off the constant-rate switching solenoid valve 6 (V6) until the integer purity measured in the discharge constant purity ppm sensor 2 (TS2) reaches the user's required purity, (Not shown).

In the meantime, in another embodiment of the present invention, the controller 100 controls the integral switching solenoid valve 6 (V) to be turned on until the integer purity measured at the output constant purity ppm sensor 2 (TS2) And a bypass valve V7 is connected to the middle of the purified water discharge line to be bypassed to the front end of the inlet valve V1. The purified water can be recycled as influent water rather than being discharged into the domestic water tank 15 through the inlet / outlet hole 3 (C), thereby improving the water purification efficiency.

When the integer purity measured in the exhaust purification purity ppm sensor 2 (TS2) reaches the user's required purity, the controller 100 keeps the constant-rate conversion solenoid valve 6 (V6) on to purify purified water from the purified water tank 12 ).

Or the constant purity ppm ppm sensor 2 (TS2) reaches the user's desired purity, the control is performed so that the bypass valve 7 is directed toward the purified water tank 12.

When the next set second constant cycle is passed, the second cleaning cycle is controlled.

In the second cleaning cycle, the supply voltage is turned off, and then the water is supplied to the inflow water through the constant-rate switching solenoid valve 6 (V6), so that water flowing into the inflow water flows through the bottom two inflow / outflow holes 3 and 4 And is controlled so as to discharge all the water coming out to the living water tank 15. [ After the second cleaning cycle, the second purification process is terminated.

Next, the control unit 100 starts a third purging step to control the flow of water in the third direction at a short interval after the end of the second purging step.

10 according to one embodiment of the present invention is controlled in the flow direction of the water in Fig.

The third purified water administration converts the supply voltage of the electrodialyzer 5 into positive polarity and supplies it. The inlet valve V1 is opened and the inflow water switching solenoid valves 2 and 2-1 (V2 and V2-1) are controlled so as to be directed to the lower inlet and outlet holes 3 and 4 (C and D) of the electrodialyer 5, .

At the same time, the upper effluent water switching solenoid valve 3 (V3) is controlled so that the inflow hole 1 (A) is directed toward the water purifying solenoid valve 6 (V6) side, and the water purifying solenoid valve 6 (V6) Direction < / RTI >

Further, the upper effluent water switching solenoid valve 4-1 (V4-1) is controlled to switch the inflow / outflow hole 4 (D) to the constant-flow switching solenoid valve 5 (V5) side.

At this time, the control unit 100 turns off the constant-rate switching solenoid valve 5 (V5) until the integer purity measured in the discharge constant purity ppm sensor 1 (TS1) reaches the user's required purity, 15).

In another embodiment of the present invention, the control unit 100 maintains the constant-pressure solenoid valve 5 (V5) on until the constant purity measured at the exhaust constant purity ppm sensor 1 (TS1) reaches the user's required purity And a bypass valve V7 is connected in the middle of the purified water discharge line to control the purified water output from the inflow / outflow hole 4 (D) to be bypassed to the front end of the inflow valve V1.

When the integer purity measured in the exhaust constant purity ppm sensor 1 (TS1) reaches the purity required by the user, the controller 100 holds the purified water in the purified water tank by keeping the constant-concentration solenoid valve 5 (V5) .

In another embodiment, the control unit 100 controls the bypass valve 7 so as to direct the bypass valve 7 in the direction of the purified water tank 12 when the integer purity measured at the exhaust constant purity ppm sensor 1 (TS1) reaches the user's required purity Control.

After the next set constant cycle time, the supply voltage is shut off, and the water for switching the solenoid valve 5 (V5) to the upper outlet holes 1, 2 (A, B) ) To be discharged to the outside.

When the third cleaning cycle is completed, the third purification cycle is terminated.

Next, the control unit starts the fourth purification stroke to control the flow of water in the third direction at a short interval after the completion of the third purification stroke.

10 according to an embodiment of the present invention is controlled in the flow direction of the water in Fig.

The fourth rectilinear stroke converts the supply voltage of the electrodialyzer 5 to a reverse polarity and applies a voltage of positive polarity.

Next, the inlet valve V1 is opened, and the inflow water switching solenoid valves 2 and 2-1 (V2 and V2-1) are controlled so as to be directed to the lower end inflow and outflow holes 3 and 4 (C and D) of the electrodialyer 5, To the lower stage.

At the same time, the upper effluent conversion solenoid valve 4-1 (V4-1) is controlled to switch the inflow / outflow hole 4 (D) to the constant-flow solenoid valve 5 (V5) side. The constant-concentration solenoid valve 5 (V5) is controlled to be turned off so that the ion-enriched water discharged from the inflow / outflow hole 4 (D) is directed toward the living water tank direction 15.

Further, the upper effluent water switching solenoid valve 3 (V3) is controlled to direct the inflow / outflow hole 1 (A) toward the constant-flow switching solenoid valve 6 (V6) side.

At this time, the controller 100 measures the purity of the purified water in the exhaust purification purity ppm sensor 2 (TS2), turns off the constant-concentration solenoid valve 6 (V6) until the measured integral purity reaches the user's required purity And the purified water is discharged in the direction of the domestic water tank (15).

In another embodiment of the present invention, the controller 100 maintains the constant-pressure solenoid valve 6 (V6) on until the integer purity measured at the output constant purity ppm sensor 2 (TS2) reaches the user's required purity And a bypass valve V7 is connected in the middle of the purified water discharge line so as to bypass all of the purified water output from the inflow hole 1 (A) to the front end of the inflow water valve V1.

When the integral purity measured in the exhaust purification purity ppm sensor 2 (TS2) reaches the purity required by the user, the control unit 100 maintains the constant-concentration solenoid valve 6 (V6) on to purify purified water from the purified water tank 12 ) To be stored in the memory.

Or the control unit 100 controls the bypass valve 7 to be directed to the purified water tank direction 12 when the integer purity measured at the discharge constant purity ppm sensor 2 (TS2) reaches the user's required purity.

After the next set constant cycle time, the supply voltage is cut off, and all the water coming out of the upper flow-in / out vents 1, 2 (A, B) is discharged in the direction of the living water tank 15). ≪ / RTI >

When the fourth cleaning cycle is completed, the fourth purified water processing is terminated.

In the permeable membrane type electrodialyzer, the cation exchange membrane is structurally composed of a fine three - dimensional network structure. When the membrane is dialyzed in one direction for a certain period of time, some of the negatively charged cationic particles are gradually accumulated in the ion exchange membrane.

As the electrodialyzer continues to operate, the ions contained in the influent water are separated, ions of opposite polarity accumulate on the electrode plate, and some of the negative and positive particles gradually accumulate and accumulate in the ion exchange membranes, do.

Also, when the ions are accumulated on the electrode plate and the ion exchange membrane, the performance of the electric field and the exchange membrane is gradually lowered and the efficiency is lowered.

It is most preferable to exchange cation exchange membranes in principle, in which the dialysis efficiency is lowered. However, the negative and cation exchange membranes in the compressed electrodialyzer are assembled with a considerable compression force in order to increase the liquefaction. In most of the small permeable membrane electrodialyzers, the negative and cation exchange membranes are structured so that they can not be exchanged during use. It takes a lot of time to disassemble and regenerate or replace the degraded member.

In addition, even when the cation exchange membranes are exchangeable, it is uneconomical to disassemble the whole of the electrodialysis unit and the cell unit by replacing the negative and cation exchange membranes, which can be regenerated a predetermined number of times, with new cation exchange membranes.

In addition, most permeable membrane type electrodialyzers are capable of discharging negative and cationic particles deposited in the ion exchange membranes in opposite directions at a proper time after a certain period of operation in the normal dialysis mode described above, And the cation exchange membranes are operated in a reverse-dialysis mode for activating the ion exchangeability of the cation exchange membranes to a normal level, the normal purification operation may not be performed in the meantime.

When the positive and reverse polarities are sequentially applied as in the embodiment of the present invention, the ions of opposite polarity gathered on the electrode plate and the ions attached to the pores of the ion exchange membrane move in opposite directions to flow the ion- And then flows out to the outside. Thus, the electrocautery can always restore its original function in the initial state, thereby prolonging the life span and saving maintenance cost.

In addition, when the solution is subjected to an integer number of strokes, the concentration of ions concentrated in each layer is differently distributed. Therefore, if a water pipe and an ion-enriched water pipe are used in one direction, a scale can easily be formed mainly in a dark place. According to an embodiment of the present invention, by changing the flow direction of the washing water and the flow direction of the water to be purified into four patterns having periodic intervals set to be smaller than a period in which the scale can be formed, The scale can be prevented from being formed on the piping, and the water purification efficiency can be kept constant at all times.

Further, according to an embodiment of the present invention, the position of the flow rate of the dialysis solution differs depending on the tendency of ionization in the channel formed by the jigs of the spacer, and when the entire cell unit composed of several tens or more spacers is viewed, A pulsation phenomenon occurs in the flow of the solution, so that deposits which can partially accumulate in the dialysis channel of the spacer, negative and cationic membranes can be continuously cleaned by the pulsation force due to the flow velocity difference.

11 illustrates an input display according to an embodiment of the present invention.

11, an input display unit 201 according to an exemplary embodiment of the present invention includes a display screen 205, status display units 211 to 216, an input keyboard unit, and a power unit 210.

The display screen 205 displays the requested purity input by the user and the purity which is currently being purified in ppm.

Generally, the pure water used for medical use is 0.01 ~ 1 ppm or less, and the concentration required for pure water is different depending on the use of medical equipment such as cooling and washing.

In addition, drinking water is required to be different depending on the flavor taste desired by the user in the range of 5 to 100 ppm.

In an embodiment of the present invention, the user includes a function of adjusting the purity of the purified water to be selectively used according to the use of the medical device, the drinking water, etc. and the required function.

The user selects the purity input unit 231 from the input keyboard unit and controls the purity display displayed on the display screen 205 to the downward direction 221 or the upward direction 224. When the required purity is displayed on the display screen 205 , the set purity can be inputted by pressing the set button 232. [

When the demand purity ppm is inputted through the input display unit, the controller 100 compares the demand purity with the integer purity (integer ppm detected from the discharge water purification sensor TS1 or TS2) The control is performed so that the duty ratio of the square wave is increased to increase the current intensity until the set ppm reaches the set ppm, and when the set ppm is exceeded, the constant valve is controlled and the duty ratio is controlled to maintain the appropriate ppm with the optimum energy.

For example, when the required ppm is 10 ppm, the set ppm can be set to 15 ppm in consideration of the post-treatment filter.

Alternatively, the final output acceptance ppm sensor 3 (TS3) is mounted at the downstream end of the post-treatment filter, and the set ppm is controlled to be increased or decreased according to the input signal of the final output acceptance ppm sensor 3.

That is, when the input signal of the final output purity ppm sensor 3 (TS3) is less than 10 ppm, which is the user purity, the control unit controls to increase the set ppm. If the input purity exceeds the user's required purity of 10 ppm, Down control.

Also, the control unit controls the display unit 205 to display, through the display screen 205, the purity ppm of the water that is finally purified according to the signals output from the outgoing purity ppm sensor 3 (TS3) or the output constant purity ppm sensor 1, 2 (TS1, 2) do.

Therefore, according to one embodiment of the present invention, the purity of the purified water can be adjusted according to the user's usage and taste, the purity of the water can be kept constant at all times, and the purity state of the water coming out can be monitored .

Generally, a water purifier is a filter that can be used effectively regardless of the amount of purified water, even if one or more people use a filter every month to 6 months, Results.

In the embodiment of the present invention, when the numbers 1, 2, 3 and 4 of the input keyboard are selected, the remaining available time of each of the first through fourth filters or the time used after the replacement is controlled to be displayed.

In the database of the control unit 100, the effective use time corresponding to the effective amount of purified water for the filters used is stored.

The remaining time of each filter is determined by sensing the time sensed by the filter attached sensors ES1 to ES4 mounted on each filter base when each filter is replaced in the control unit 100, After extracting the usable time of the filter, the integer time is calculated and displayed.

Or when each filter is replaced, the user selects and inputs a number corresponding to each filter in the input keyboard unit, so that the control unit receives the input signal and extracts the usable time of the filter from the usable time for each filter previously stored After the filter has been replaced, the integer time used or the integer time used in the future.

According to an embodiment of the present invention, the control unit calculates the amount of purified water per hour in consideration of the water purification capacity of the water purifier per hour, and calculates the usable time of the filter, and stores the calculated amount of water in the database.

For example, in the case of the sedimentation filter, 300 hours is set as the effective use time when 3000 liters is the effective use amount and the water capacity is 10 L / hr, and the control unit outputs the control signal to sound the alarm when approaching the effective use time.

Therefore, according to the embodiment of the present invention, the time for replacing the filter at an appropriate time is notified by an alarm or an indication, so that the purified water quality can be kept constant.

According to an embodiment of the present invention, the integer cycle display unit 211 is illuminated and displayed in the integer cycles of the first to fourth integer cycles, and the cleaning cycle indicator 212 is displayed in the washing cycle.

In addition, a water level sensor is attached to the full tank of the purified water tank, and when the water level sensor transmits the full water level signal to the controller 100, the controller cuts off the inflow water valve V1 and turns off the supply voltage, .

In addition, when the water level sensor transmits the full water level signal to the control unit, the control unit 100 controls the water level display unit 213 of the input display unit to emit light.

When the raw water detection sensor PS1 receives the signal of insufficient supply of raw water (when the pressure is less than 0.3 kg / cm2), the control unit controls to stop the integer number of strokes, So as to be displayed.

If the purity signal transmitted from the raw water measurement sensor TS4 exceeds the set concentration (ppm) (for example, when the raw water exceeds 5000 ppm), the control unit controls to stop the integer stroke, The display unit 216 is controlled to emit light.

12 shows a structure of an automatic water purification apparatus according to an embodiment of the present invention.

According to an embodiment of the present invention, an input display unit 201 is disposed at the top of the front case of the water purifier, and a water outlet 250 is disposed at the bottom of the front case to output purified water.

Referring to FIG. 12, a purified water tank 7 is disposed at the upper front of the inside of the case and an electrodialyzer 5 is disposed below the purified water tank 7.

Further, the valve module 10 is disposed on the rear side of the electrodialyzer, and the filter units 151 to 154 are disposed on the top of the valve module.

According to one embodiment of the present invention, the valve module 10 modularizes solenoid valves and pipelines connecting or disconnecting the inflow hole, the inflow water line, the purified water discharge line, and the ionized water discharge line of the electrodialyzer into a hexahedral structure.

According to one embodiment of the present invention, the valve module 10 has a hexahedral solenoid valve module in which a plurality of solenoid valves are arranged in a hexahedral structure and connected to each other through upper, lower, left, The electrodialyzer in which the flow of purified water is controlled can be compactly compacted.

The water purifier according to an embodiment of the present invention sets a desired ppm (TDS) according to the use of water desired by the user irrespective of raw water such as contaminated water containing high salinity groundwater, lime water, nitrate nitrogen, By performing the constant-stroke control, purified water can be obtained by regulating the outflow from various sources such as pure water to drinking water.

Further, by controlling the duty ratio of the square wave to be increased to increase the current intensity until the desired purity (TDS), which is the desired purity, is reached, and when the set ppm is exceeded, the duty ratio is controlled to be kept low by the appropriate energy, The correction energy is distributed according to the concentration of the raw water, and unnecessary energy waste can be reduced.

According to an embodiment of the present invention, by changing the flow direction of the washing water and the flow direction of the water to be purified into four patterns having periodic intervals set to be smaller than a period in which the scale can be formed, It is possible to prevent scale from being formed in the piping, so that the high water purification efficiency can be always maintained even if it is used for a long time.

In addition, according to an embodiment of the present invention, by periodically changing the polarity of the positive and negative voltages, the ions are moved in one direction by the electric field to move the ions attached to the gap between the film hole and the channel to the opposite direction The lifetime can be prolonged while maintaining a high water purification efficiency, and the maintenance cost can be saved.

According to an embodiment of the present invention, the user is informed of the use time or the usable time of the filter, and the user is informed by alarm or indication that the filter is to be replaced at an appropriate time, The purified water quality can be maintained at a constant level.

1: Automatic water purification system
5: Electric catapults
7, 12: Water tank
8: Filter box
10: Valve module
31; 32: Spacer
41 ~ 45, 51 ~ 56: Ion exchange membranes
100:
151, 152, 153, 154: filter
A, B, C, D: First to fourth outflow holes
TS1 ~ TS4: Purity measurement sensor
V1 to V6: Solenoid valve

Claims (16)

delete A plurality of cation exchange membranes arranged in a layered manner, spacers arranged in a layered manner with the anion exchange membrane, and two outflow holes formed at the upper and lower ends, respectively, and the inflow water inputted into one side flow inlet according to the electric field direction of the supply voltage applied to each layer The inflow water flowing into the other side inflow hole is discharged through the one side inflow hole of the opposite side along the slot of the spacer from which the ions are collected, An electrodialyzer comprising: an electrodialyzer;
A control unit including solenoid valves for controlling the influent water, purified water discharge line and ionized water discharge line, and controlling the supply voltage;
A valve module that modularizes the solenoid valves and the ducts to connect or block the inflow hole, the inflow water line, the purified water discharge line, and the ionized water discharge line of the electrodialyzer in a hexahedral structure; And
An exhaust constant purity sensor for measuring the concentration of purified water outflow at one side of the purified water discharge line; / RTI >
Wherein the controller controls to discharge the purified water of the electrodialyzer and the discharge of the ion-enriched water sequentially in the different inflow / outflow holes according to the four types of purified water administrations, And automatically controlling the concentration of the outgoing water to be finally discharged,
The control unit performs the four types of integer steps,
The inflow water is supplied to the one side inflow hole 1 and the other side inflow hole 2 at the upper end of the electrodialyzer, and the one side inflow / outflow hole 3 at the lower end of the electrodialyser is supplied with the ion concentration water And the other-side inflow / outflow hole 4 at the lower end of the electrodialyzer is controlled so that the purified water is discharged;
Wherein the supply voltage is supplied to the electrodialyzer in a reverse polarity opposite to the positive polarity, and the inflow water is supplied to one side inflow hole 1 and the other side inflow hole 2 at the upper end of the electrodialyzer, 3 is a water purification column for discharging purified water, and the other side inflow / outflow hole 4 at the lower end of the electrodialyzer is for discharging ion-rich water;
The inflow water is supplied to the one side inflow hole 3 and the other side inflow hole 4 of the lower end of the electrodialyzer, and the one side inflow / outflow hole 1 at the upper end of the electrodialyzer is supplied with the ion concentration water And the other-side inflow / outflow hole 2 at the upper end of the electrodialyzer is controlled so that the purified water is discharged; And
The inflow water is supplied to the one side inflow hole 3 and the other side inflow hole 4 of the lower end of the electrodialyzer and the one side inflow hole 1 at the upper end of the electrodialyzer is supplied with the purified water , And the other side inflow hole (2) at the upper end of the electrodialyzer is controlled to discharge ionized water; To be performed in a sequential manner,
3. The method of claim 2,
Wherein the first to fourth cleaning periods each cut off the supply voltage and the inflow water is discharged from each of the inflow / outflow holes in a state in which the inflow water is supplied And the discharged water is discharged to the waste water line or the recycled water tank
The method of claim 3,
Wherein the first to fourth cleaning cycles are controlled at intervals of 1/20 to 1/10 of the first to fourth integral cycle periods,
3. The method of claim 2,
Further comprising: a pretreatment filter installed in a water supply line at the front end of the electrodialyzer; and a post-treatment filter provided at a rear end of the purified water discharge line of the electrodialyzer;
The control unit senses when the preprocessing filter and the post-treatment filter are installed and calculates the use time from the sensed time, displays the use time according to the user's selection signal, And an automatic water purification device
6. The method of claim 5,
Wherein the sensing of the replacement installation is detected by a user's replacement input signal upon replacement of the filter,
6. The method of claim 5,
Wherein when the filter is replaced, it is detected by the filter attached sensor attached to each filter base, 3. The method of claim 2,
The controller compares the demand purity value with the signal value of the discharge constant purity sensor to control the duty ratio of the supply voltage of the square wave to be increased until the water coming out of the purified water discharge line reaches the demand purity value , And controls the duty ratio to be lowered when it approaches the required purity value
3. The method of claim 2,
Wherein the purified water discharge line further includes a purified water tank for collecting water discharged from the purified water discharge line,
Wherein the control unit compares the demand purity value with the signal value of the discharge constant purity sensor to calculate a solenoid valve of the purified water discharge line to be collected into the purified water tank only when the water out of the purified water discharge line reaches the required purity value, And a control unit
3. The method of claim 2,
The control unit compares the demand purity value with the signal value of the discharge constant purity sensor and outputs water discharged from the purified water discharge line to the inflow water solenoid valve front end until the water out of the purified water discharge line reaches the required purity value And the control unit controls the solenoid valve of the purified water discharge line
6. The method of claim 5,
Further comprising a raw water concentration measuring sensor for measuring the concentration of the raw water in the front end water supply line of the pre-processing filter, wherein, when it is determined that the signal value of the raw water concentration measuring sensor exceeds the predetermined concentration, And the control unit stops the integral stroke.
6. The method of claim 5,
A water purification tank for collecting the water coming out from the purified water discharge line is disposed at an upper front of the inner front surface of the automatic water purification apparatus,
Wherein the electro-dialyzer is disposed below the purified water tank,
Wherein the valve module is disposed on a rear side of the electrodialyzer,
Wherein the pretreatment filter and the post-treatment filter portion are arranged on the rear side of the purified water tank,
An input display unit is formed on an upper end of the front case, and a water outlet for outputting water collected from the purified water tank is formed on the lower end of the front case.
delete A plurality of cation exchange membranes arranged in a layered manner, spacers arranged in a layered manner with the anion exchange membrane, and two outflow holes formed at the upper and lower ends, respectively, and the inflow water inputted into one side flow inlet according to the electric field direction of the supply voltage applied to each layer The inflow water flowing into the other side inflow hole is discharged through the one side inflow hole of the opposite side along the slot of the spacer from which the ions are collected, An electrodialyzer comprising: an electrodialyzer;
A control unit including solenoid valves for controlling the influent water, purified water discharge line and ionized water discharge line, and controlling the supply voltage;
A valve module that modularizes the solenoid valves and the ducts to connect or block the inflow hole, the inflow water line, the purified water discharge line, and the ionized water discharge line of the electrodialyzer in a hexahedral structure; And
An exhaust constant purity sensor for measuring the concentration of purified water outflow at one side of the purified water discharge line; An automatic water purification apparatus,
Wherein the control unit controls so that the water discharge of the electrodialyzer and the discharge of the ion-enriched water are sequentially discharged from the different inflow holes in each of the four types of water purification stations, and the concentration of the outflow water of the purified water discharge line So that the final discharge is controlled,
Performing the four types of integer steps
When the inflow water is supplied to the one side inflow hole 1 and the other side inflow hole 2 at the upper end of the electrodialyzer, the one side inflow / outflow hole 3 at the lower end of the electrodialyzer is connected to the ion- And the other-side inflow / outflow hole 4 at the lower end of the electrodialyzer is controlled so that the purified water is discharged;
Wherein the supply voltage is supplied to the electrodialyzer in a reverse polarity opposite to the positive polarity and the inflow water is supplied to the one side inflow hole 1 and the other side inflow hole 2 at the upper end of the electrodialyzer, 3 is a water purification column for discharging purified water, and the other side inflow / outflow hole 4 at the lower end of the electrodialyzer is for discharging ion-rich water;
The inflow water is supplied to the one side inflow hole 3 and the other side inflow hole 4 of the lower end of the electrodialyzer, and the one side inflow / outflow hole 1 at the upper end of the electrodialyzer is supplied with the ion concentration water And the other-side inflow / outflow hole 2 at the upper end of the electrodialyzer is controlled so that the purified water is discharged; And
The inflow water is supplied to the one side inflow hole 3 and the other side inflow hole 4 of the lower end of the electrodialyzer and the one side inflow hole 1 at the upper end of the electric dialyzer is supplied with the purified water , And the other side inflow hole (2) at the upper end of the electrodialyzer is controlled to discharge ionized water; To be performed in a sequential manner.
15. The method of claim 14,
Further comprising first to fourth cleaning periods between the first to fourth integer strokes, wherein the first to fourth cleaning cycles interrupt the supply voltage and the inflow water is discharged from each of the inflow / outflow And the discharged water is discharged to the waste water or recycled water tank
15. The method of claim 14,
And compares the demand purity value with the signal of the discharge constant purity sensor to increase the duty ratio of the supply voltage supplied to the square wave until the water coming out of the purified water discharge line reaches the required purity value, And controls the duty ratio to be lowered when it approaches the required purity value.

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