KR20080102591A - Capacitive deionization water softener - Google Patents

Abstract

A capacitive deionization water softener for increasing the amount of soft water is provided to improve softening performance and increase processing amount of the water softening by making ions passing the electrical soft water flow channel in the raw water absorb as concentratedly to an electrode. A plurality of electrode(110) forms electric field in the soft water flow channel. The first and second reverse osmosis membrane members(141, 142) are positioned on the electric field, and soften the water by using Reverse osmotic pressure. The electrical soft water flow channel(150) and reverse osmosis soft water flow channel(160) is separated by a reproduction valve in regeneration process. An electrode with panel shape, is separated from each other. A side of the first and the second reverse osmosis membrane member is faced with the side of the electrode. The side of the first electrode and the second electrode and the first and the second reverse osmosis membrane member and side are perpendicularly arranged.

Description

Capacitive deionization water softener

1 is a cross-sectional view schematically showing an electric adsorption-and-removable water softener according to the first embodiment of the present invention.

2 is a view for showing the water softening action of the electric adsorption-removable water softener according to the first embodiment of the present invention.

3 is a view for showing the action of the desorption of the electro-desorption water softener according to the first embodiment of the present invention.

FIG. 4 is a plan view of the first and second electrode parts and the first and second reverse osmosis membrane members of the electro-desorption water softener according to the second embodiment of the present invention, viewed from the direction A of FIG. 1.

5 is a cross-sectional view taken along the line II ′ of FIG. 4.

* Description of symbols on the main parts of the drawings *

1: electric suction type softener 10: main body

20: softening flow path 110, 210: first electrode portion

120, 210: second electrode portion 141, 142, 241, 242: reverse osmosis membrane member

150, 250: electrical training passage 160, 260: reverse osmosis training passage

The present invention relates to an electric adsorption-and-desorption water softener, and more particularly, to an electric adsorption-and-desorption water softener which improves the water softening efficiency to increase the treatment flow rate.

In general, the water softener is composed of a body for mounting an ion exchange resin and an ion exchange resin for ion exchange with metal ions contained in the raw water, and is a device for converting raw water of high hardness into soft water of low hardness.

Such water softeners are being used in washing machines to increase the dissolving power of detergents and to increase the washing power, or the water softeners are being used in steam generators to prevent scale generated in the steam pipes by hard water. .

On the other hand, the water softener using the ion exchange resin has to be provided with a separate space for storing the regeneration water to generate the salt water in order to regenerate the ion exchange resin, there is an inconvenience to inject salt periodically.

In order to solve the above-mentioned problems, after applying voltage to the porous electrode, ions in the medium are removed by using the electrical properties of the ions. After removing the hard water, the voltage is not applied or the opposite polarity is applied to the electrodes. An electric adsorption-and-desorption water softener which discharges the hard water component which has been used together with a medium is proposed.

However, the proposed electroabsorbable water softener has a disadvantage in that the treatment flow rate is small. In order to solve this problem, when the flow rate is increased by increasing the size of the electrode, there is a problem in that the size of the electric adsorption-and-desorption water softener increases. In addition, there is a disadvantage in that the use of expensive nano-porous electrodes commonly used as electrodes to increase the flow rate increases the manufacturing cost of the electro-desorption water softener.

Accordingly, the present invention has been made to solve the above problems, and an object thereof is to provide an electrosorption and desorption softener which increases the flow rate by improving the efficiency of softening raw water.

And another object of the present invention to improve the efficiency of softening the raw water, to reduce the use of expensive nano-porous electrode to provide an electro-desorption water softener to reduce the manufacturing cost of the electro-desorption water softener. Has its purpose.

In accordance with an aspect of the present invention, there is provided an electric adsorption-and-detachable softener comprising: a plurality of electrode portions for forming an electric field in a soft water passage; And a first reverse osmosis membrane member placed in a space where the electric field is formed to soften the raw water by reverse osmosis.

Here, an electrical water softening flow path is formed between the electrode portions, and a reverse osmosis soft water flow passage parallel to the electrical soft water flow passage is provided between the first reverse osmosis membrane member and the second reverse osmosis membrane member. The apparatus may further include a flow path switching valve installed on the electrical training flow path, wherein the flow path switching valve separates the electrical soft water flow path and the reverse osmosis soft water flow path during a regeneration operation.

The electrode portion has a plate shape and is spaced apart from each other, and the surfaces of the first and second reverse osmosis membrane members are disposed to face the surface of the electrode portion between the electrode portions.

In another aspect, the electric adsorption-and-desorption water softener according to the present invention for achieving the object of the present invention provides a soft water flow passage; A first electrode part disposed on the soft water passage and configured to receive a positive or negative voltage; A second electrode part provided to face the first electrode part and to which a voltage different from that of the first electrode is applied; And first and second reverse osmosis members disposed between the first electrode portion and the second electrode portion to allow water molecules on the high concentration side to pass to the low concentration side.

Here, the surfaces of the first electrode portion and the second electrode portion are disposed perpendicular to the surfaces of the first and second reverse osmosis membrane members.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view schematically showing an electric adsorptive and soft water softener according to a first embodiment of the present invention.

Referring to FIG. 1, the electric adsorption-and-detachable water softener 1 according to the first embodiment of the present invention includes a main body 10 having a water softening passage 20 to soften the raw water as it passes therethrough, and a water softening passage ( The first electrode part 110 and the first electrode part 110, which are installed on the first electrode part 110, are disposed to face the second electrode part 120, the first electrode part 110, and the second electrode part 120. Disposed between the first reverse osmosis membrane member 141 and the second reverse osmosis membrane member 142 for softening the raw water in a reverse osmosis method, and preventing a short circuit between the first electrode portion 110 and the second electrode portion 120. It includes an insulator (130). And a power supply unit (not shown) for applying a negative or positive voltage to the first electrode unit 110 and the second electrode unit 120.

In detail, one side of the main body 10 is provided with a raw water inlet 11 to allow the raw water to flow into the main body 10 from the outside.

And the raw water inlet 11 is provided with a flow rate control valve 50 to control the flow rate of the raw water flowing into the electric soft water flow path 150 to be described later. By this flow control valve 13, the raw water flows at a constant flow rate in the electrical soft water flow passage (150). Accordingly, the raw water may be sufficiently softened by the first electrode part 110 and the second electrode part 120.

Here, the flow rate control valve 13 can be adjusted by a separate control means, it is noted that it can be adjusted manually by the user.

On the soft water passage 20, pores having a diameter of several tens of nanometers in diameter are formed on the surface thereof, and the first electrode part 110 and the second electrode part 120, which are manufactured in a plate shape, are alternately formed. Are laminated.

The first electrode part 110 and the second electrode when the power is applied to the first electrode part 110 and the second electrode part 120 between the first electrode part 110 and the second electrode part 120. An insulating plate 130 is installed to prevent the portion 120 from being short-circuited. When different voltages are applied to the first electrode unit 110 and the second electrode unit 120, an electric field is formed therebetween to allow ions to move.

The first reverse osmosis membrane member 141 and the second reverse osmosis membrane member are spaced apart from each other while facing each other between the first electrode 110 and the insulating plate 130 and between the second electrode 120 and the insulating plate 130. 142 is disposed. The first reverse osmosis membrane member 141 and the second reverse osmosis membrane member 142 are supported by respective osmosis membrane bases 143.

Here, the first and second reverse osmosis membrane members 141 and 142 have a high concentration of a solution located on one side and a low concentration of a solution located on the other side, so that the water of the deep solution is allowed to penetrate into the dilute solution. The thicker and dilute solution is diluted further.

In addition, an electrical soft water flow passage 150 is formed between the first electrode plate 110 and the first reverse osmosis membrane member 141 and between the second electrode plate 120 and the second reverse osmosis membrane member 142, thereby providing a soft water flow passage 20. Being a part of the reverse osmosis membrane member 141 and the second reverse osmosis membrane member 142 reverse osmosis water softening flow path 160 for softening the raw water in a reverse osmosis method is formed so that a portion of the soft water flow passage 20 do.

On the other hand, the other side of the main body 10 which is opposite to the side where the raw water inlet 11 is formed, the reverse osmosis soft water discharge port 50 is connected to the reverse osmosis soft water flow passage 160, and is connected to the electric soft water flow passage 150 An electrical soft water outlet 12 is formed.

And the electric soft water outlet 12 is provided with a flow path switching valve (60). The flow path switching valve 60 is connected to the electric soft water discharge port 12 and the reverse osmosis soft water discharge port 50 when the electric adsorption and desorption water softener 1 performs a softening action, and the electric adsorption and detachable water softener 1 is regenerated. When performing the process, the electric soft water outlet 12 and the reverse osmosis soft water outlet 50 are separated.

Hereinafter, the operation of the electro-desorption water softener according to the first embodiment of the present invention will be described with reference to the drawings.

First, referring to Figure 2, it will be described the water softening action of the electric adsorption-removable water softener according to the first embodiment of the present invention.

In detail, when the flow control valve 13 installed at the raw water inlet 11 of the main body 10 is opened, the raw water WS flows through the electric soft water flow passage 150.

At this time, the first reverse osmosis membrane member 141 and the second reverse osmosis membrane member 142 allow only the water molecule M of the raw water WS including the metal ions to pass therethrough. Accordingly, the first osmosis membrane softened by the first and second reverse osmosis membrane members 141 and 142 flows in the reverse osmosis membrane softening passage 160.

At the same time, when a positive voltage is applied to the second electrode part 120 and a negative voltage is applied to the first electrode part 110, the intensity of the electric field from the second electrode part 120 to the first electrode part 110 ( An electric field with D1) is formed.

Accordingly, the cation P included in the raw water WS passing through the electrically soft water flow passage 150 formed between the first electrode 110 and the first reverse osmosis membrane member 141 is directed toward the first electrode 110. It is moved and adsorbed on the surface of the first electrode unit 110 and stored. In addition, the negative ions (N) included in the raw water (WS) passing through the electric soft water flow passage 150 formed between the second electrode portion 120 and the second reverse osmosis membrane member 142 are moved toward the second electrode portion 120. Adsorbed on the surface of the second electrode unit 120 is stored.

On the other hand, in the raw water WS flowing through the electric soft water flow passage 150, the first soft water WL1 softened by the first and second reverse osmosis membrane members 141 and 142 is relatively increased to the outlet side of the electric soft water flow passage 150. Increasingly, the flow rate of the raw water WS decreases. In addition, the raw water WS having a reduced flow rate can be sufficiently in contact with the first and second electrode portions 110 and 120 to effectively remove ions contained in the raw water WS. As a result, the training efficiency is improved.

In addition, the flow path switching valve 60 connects the electric soft water discharge port 12 and the reverse osmosis soft water discharge port 50 and closes the concentrated water discharge port 18. Accordingly, in the reverse osmosis soft water discharge port 50, the soft water in which the first soft water WL1 and the second soft water WL2 are mixed flows.

Next, the regeneration of the electric adsorptive and soft water softener according to the first embodiment of the present invention will be described.

Referring to FIG. 3, when the flow rate control valve 13 installed at the raw water inlet 11 of the main body 10 is opened, the raw water WS flows through the electric soft water flow passage 150.

At this time, the first reverse osmosis membrane member 141 and the second reverse osmosis membrane member 142 allow only the water molecule M of the raw water WS including the metal ions to pass therethrough. Accordingly, the first osmosis membrane softened by the first and second reverse osmosis membrane members 141 and 142 flows in the reverse osmosis membrane softening passage 160.

At the same time, a low voltage is applied to the second electrode part 120 and a high voltage is applied to the first electrode part 110, unlike when the water softening action is performed.

In this way, the intensity direction of the electric field formed between the first electrode portion 110 and the second electrode portion 120 is a direction D2 from the first electrode portion 110 toward the second electrode portion 120. Have

Accordingly, the positive ions P adsorbed on the first electrode part 110 are separated from the first electrode part 110 and included in the raw water WS and adsorbed and stored in the second electrode part 120 ( N) is separated from the second electrode unit 120 and included in the raw water WS to generate the concentrated water WH.

On the other hand, the flow path switching valve 60 disconnects the electric soft water discharge port 12 and the reverse osmosis soft water discharge port (50). In other words, the concentrated water (WH) discharged from the electrical soft water outlet (12) is discharged toward the concentrated water outlet (18) and is not discharged to the reverse osmosis soft water outlet (50).

Accordingly, the reverse osmosis soft water discharge port 50 continues to discharge the first soft water WL1 despite the regeneration process of the electro-desorption softener 1 according to the first embodiment of the present invention.

Hereinafter, an electric adsorption-and-removable water softener according to a second embodiment of the present invention will be described with reference to the drawings, and the present invention will be described with reference to a portion that is compared with the first embodiment of the present invention.

FIG. 4 is a plan view of the first and second electrode parts and the first and second reverse osmosis membrane members according to the second embodiment of the present invention, viewed from the direction A of FIG. 1, and FIG. 5 is the Ⅰ-I of FIG. 4. It is a cross-section cut along.

Referring to FIG. 5, the surfaces of the first and second reverse osmosis membrane members 241 and 242, which are paired with the surfaces of the first and second electrode portions 210 and 220 according to the second embodiment of the present invention, are perpendicular to each other. To be placed. An electrically softening flow path 250 is formed between the paired first and second reverse osmosis membrane members 241 and 242, and the first and second reverse osmosis membranes to be paired differently from the paired first and second reverse osmosis membrane members 241 and 242. The reverse osmosis soft water flow passage 260 is formed between the members 241 and 242. And the electrical training flow path 250 is connected to the raw water inlet (11).

The surfaces of the first and second electrode parts 210 and 220 according to the second embodiment are disposed perpendicular to the surfaces of the first and second reverse osmosis membrane members 241 and 242 which are paired with each other. The separation distance of the 210 and second electrode parts 220 is maintained by the first reverse osmosis membrane member 241 and the second reverse osmosis membrane member 242, and the first reverse osmosis membrane member 241 and the second reverse osmosis membrane member ( The separation distance between the first electrode part 210 and the second electrode part 220 is maintained at a constant distance by the first electrode part 210 and the second electrode part 220. Not required.

On the other hand, the action of the electro-desorption water softener according to the second embodiment of the present invention is substantially the same as the action of the electro-desorption water softener according to the first embodiment of the present invention, to refer to the first embodiment of the present invention The description thereof will be omitted.

As described above, the electro-desorption water softener according to the present invention has the effect of increasing the flow rate by improving the water softening efficiency by intensively adsorbing ions contained in the raw water passing through the electric soft water passage.

In addition, the electro-desorption water softener according to the present invention does not need to increase the size of the electrode plate in order to increase the flow rate and increase the flow rate, thereby reducing the manufacturing cost of the electro-desorption water softener.

Claims (6)

A plurality of electrode portions for forming an electric field in the soft water passage; And a first and second reverse osmosis membrane members placed in a space where the electric field is formed to soften the raw water by reverse osmosis. The method of claim 1, An electrical training flow path is formed between the electrode portions. And a reverse osmosis water softening channel parallel to the electrical water softening channel between the first reverse osmosis membrane member and the second reverse osmosis membrane member. The method of claim 2, Further comprising a flow path switching valve is installed on the electrical training flow path, The regeneration valve is an electric adsorption-removable water softener for separating the electric soft water flow path and the reverse osmosis soft water flow path during a regeneration action. The method of claim 1, The electrode portions have a plate shape and are spaced apart from each other, And an electrode surface of the first and second reverse osmosis membrane members disposed between the electrode portions so as to face the surface of the electrode portion. A main body providing a soft water flow passage; A first electrode part disposed on the soft water passage and configured to receive a positive or negative voltage; A second electrode part provided to face the first electrode part and to which a voltage different from that of the first electrode is applied; And a first and a second reverse osmosis member disposed between the first electrode portion and the second electrode portion to allow water molecules on the high concentration side to pass to the low concentration side. The method of claim 5, wherein And a surface of the first electrode portion and the second electrode portion, and the first and second reverse osmosis membrane members and the surface are disposed perpendicular to each other.

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