KR20160080128A - Deionization filter device, water treatment apparatus having deionization filter device and method for controling deionization filter device - Google Patents

Abstract

The present invention relates to a deionizing filter device, a water treatment apparatus comprising the deionizing filter device, and a method for controlling the deionizing filter device. According to an embodiment of the present invention, the deionizing filter device comprises: a filter part including an electrode adsorbing solid substances contained in introduced water and a power controlling part supplying voltage to the electrode; a flow amount sensor detecting a flow amount of purified water passing through the filter part; an accumulated water permeating amount calculation part calculating an accumulated water permeating amount of purified water passing through the filter part based on the flow amount detected by the flow amount sensor; and a controlling part regulating the level of voltage applied to the electrode depending on the accumulated water permeating amount.

Description

FIELD OF THE INVENTION The present invention relates to a deionization filter device, a water treatment device including a deionization filter device, and a control method of a deionization filter device,

The present invention relates to a deionization filter device, a water treatment device including a deionization filter device, and a control method of the deionization filter device.

The deionization filter is a filter that removes ionic substances contained in raw water using an electric attraction force to generate purified water. The deionization filter can remove ionic substances contained in the raw water by various methods.

Generally, the deionization filter includes an electrode and a power supply unit for applying a voltage to the electrode. The removal rate of the solid matter by the voltage applied to the electrode may vary depending on the cumulative volume of the deionization filter.

Conventional deionization filters apply a constant voltage to a constant electrode irrespective of the cumulative flow rate. Accordingly, the conventional deionization filter has a problem in that the TDS value of the water that flows out through the deionization filter varies depending on the cumulative volume of the deionization filter.

The following patent document 1 relates to a deionization filter, but fails to provide a solution to the above-mentioned problem.

Korean Patent Laid-Open Publication No. 10-2013-0136406

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems of the prior art, and it is an object of the present invention to provide an apparatus and a method for adjusting a voltage level of a solid- A deionization filter device capable of keeping the value constant, a water treatment device including a deionization filter device, and a control method of the deionization filter device.

A deionization filter device according to an embodiment of the present invention includes a filter unit including an electrode for adsorbing solid matter contained in the incoming water and a power source control unit for applying a voltage to the electrode, A flow rate sensor for detecting a flow rate, an accumulated flow rate calculation unit for calculating an accumulated flow rate of the constant passing through the filter unit based on the flow rate detected by the flow rate sensor, And a control unit for controlling the size.

In one embodiment, the controller may adjust the magnitude of the voltage using a look-up table for the removal rate of the solid material according to the cumulative volume of electricity according to the magnitude of the voltage.

The control unit may include a look-up table storing unit storing the look-up table, an adjusting voltage calculating unit calculating an adjusting voltage value according to the cumulative amount using the look-up table, And a voltage controller for controlling the power controller to apply a voltage having a voltage value.

In one embodiment, the look-up table may include a ballast removal rate and a ballast applied voltage value.

In one embodiment, the regulated voltage calculator may calculate the regulated voltage value by dividing the ballast removal rate by the removal rate of the solid material according to the accumulated flow rate, and then multiplying the stabilizer applied voltage value.

According to an embodiment of the present invention, a water processor including the deionization filter device can be provided.

A control method of a deionization filter device according to an embodiment of the present invention is a control method of a deionization filter device for removing a solid material contained in water that is introduced by applying a voltage to an electrode, , A step of detecting a flow rate of water filtered by the applied voltage, a step of calculating an accumulated flow rate based on the detected flow rate, and a lookup table for a removal rate of the solid material according to the accumulated flow rate And adjusting the magnitude of the voltage.

In one embodiment, the step of adjusting the magnitude of the voltage includes: calculating an adjusted voltage value according to the cumulative volume using the lookup table; and adjusting a voltage applied to the electrode with the adjusted voltage value . ≪ / RTI >

In one embodiment, the lookup table may include a ballast removal rate and a ballast applied voltage value.

In one embodiment, the step of calculating the regulated voltage value may divide the ballast removal rate by the removal rate of the solid material according to the accumulated flow rate, and then multiply the ballast applied voltage value to calculate the regulated voltage value.

According to an embodiment of the present invention, by adjusting the voltage level using a lookup table for the removal rate of the solid material according to the cumulative volume of the voltage, it is possible to maintain the TDS value of the water exiting through the filter constant There is an effect.

1 is a schematic view illustrating a deionization filter device according to an embodiment of the present invention.
FIG. 2 is a block diagram for explaining an embodiment of the filter unit of FIG. 1. FIG.
FIG. 3 is a graph showing the removal rate of the solid material according to the cumulative volume of water according to the magnitude of the voltage.
4 is a block diagram for explaining an embodiment of the control unit of FIG.
5 is a flowchart illustrating a control method of a deionization filter device according to an embodiment of the present invention.
6 is a flowchart for explaining an embodiment of adjusting the magnitude of the voltage of FIG.

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

However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art.

In the drawings referred to in the present invention, elements having substantially the same configuration and function will be denoted by the same reference numerals, and the shapes and sizes of the elements and the like in the drawings may be exaggerated for clarity.

FIG. 1 is a configuration diagram for explaining a deionization filter device according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an embodiment of the filter unit of FIG. 1, FIG. 4 is a graph illustrating the removal rate of the solid material according to the amount of water. FIG.

1, a deionization filter apparatus 100 according to an embodiment of the present invention includes a filter unit 110, a flow rate sensor 120, an accumulated quantity calculation unit 130, and a control unit 140 .

The filter unit 110 can remove the solid matter contained in the water introduced using electricity. Here, the solid material contained in the incoming water includes minerals such as calcium, sodium, magnesium, and iron, and the amount of the solid material dissolved in the purified water is in the range of mg / Total Dissolved Solids). The total dissolved solid material refers to the total amount of solids dissolved in purified water, and the solid material may exist mainly as an ionic material in an ionic state.

In one embodiment, the filter unit 110 is included in water using any one of Electrodialysis (ED), Electrodeionization (EDI), and Capacitive Deionization (CDI) To remove the solid material that has been removed. In this case, since the solid material removed from the filter unit 110 is mainly an ion material in the ion state, removing the solid material in this specification including the claims includes the meaning of removing the ion material.

When the solid material present in the raw water is removed by the electrodialysis method, the filter unit 110 may include an electrode and an ion exchange membrane. Specifically, when the filter unit 110 applies a voltage to the raw water through the electrode, the solid material contained in the raw water moves toward the negative electrode or the positive electrode according to the polarity of each electrode. Here, since the anode and cathode electrodes are provided with the ion exchange membrane, only the solids migrated by the electrical attraction are trapped / adsorbed on the ion exchange membrane. Accordingly, the filter unit 110 can remove the solid matter from the raw water.

When the solid material present in the raw water is removed using the electrodeionization method, the filter unit 110 may include an electrode, an ion exchange membrane, and an ion exchange resin. Specifically, the ion exchange resin filled between the cation exchange membrane and the anion exchange membrane can be used to trap / adsorb the positive and negative ions in the raw water flowing into the filter unit 110.

Here, when a voltage is applied to the ion exchange resin, the trapping / adsorption of the solid matter in the raw water can proceed more rapidly by the electrical attraction. Since the solid material present in the raw water is collected / adsorbed by the ion exchange resin, the solid material contained in the raw water flowing through the filter unit 110 can be removed.

Unlike the electrodialysis method and the electric deionization method, when the solid matter existing in the raw water is removed using the capacitive deionization method, the filter unit 110 may not contain a separate ion exchange membrane or an ion exchange resin have.

That is, the storage deionization method can remove ions from the raw water flowing into the filter unit 110 by adsorbing the solid material directly on the electrode. Therefore, it is preferable that the electrode of the filter unit 110 be a porous carbon electrode having a large surface area and small reactivity, and the porous carbon electrode may be formed of activated carbon. The activated carbon preferably has an excellent pore volume, a high specific surface area, a high de-adsorption capability and a long lifetime when compared with various porous carbon materials, so that the activated carbon is preferably used as an electrode of the filter unit 110 .

2, the filter unit 110 includes electrodes 112a and 112b for adsorbing or desorbing solid matter contained in the incoming water and a power source for applying a voltage to the electrodes 112a and 112b, And may include a controller 114.

When the deionization voltage or the regeneration voltage is applied by the power source control unit 114, the electrodes 112a and 112b are attracted to the solid material contained in the constant according to the type of the applied voltage by the electric attraction force, . In one embodiment, the electrodes 122a and 122b may further include an electrodeionization membrane (not shown).

The power control unit 114 may apply a deionization voltage or a regeneration voltage to the electrodes 112a and 112b under the control of the controller 140. [ The power control unit 114 may control the magnitude of the voltage applied to the electrodes 112a and 112b under the control of the controller 140 to maintain the TDS value of the filtered water by the filter unit 110 constant.

When the power supply control unit 114 stops supplying power to the electrodes 112a and 112b, the solid material attached to the electrodes 112a and 112b may be desorbed. Therefore, when the electrodes 112a and 112b are not supplied with power and are maintained for a preset time, the water passing through the filter unit 110 may increase the amount of the solid matter.

Here, although not shown, the power supply control unit 114 can accelerate the desorption of the solid matter by applying a voltage having a polarity opposite to the polarity applied to the electrodes 112a and 112b during the deionization operation. For example, (-) voltage can be applied to the electrode to which the (+) voltage is applied during the deionization operation, during the regeneration operation. That is, the (-) ions adsorbed by the (+) voltage may be desorbed more quickly due to the electrical repulsive force with the negative (-) voltage applied during the regeneration operation.

The flow sensor 120 can detect the flow rate of the water that has passed through the filter unit 110. Here, the flow rate detected by the flow rate sensor 120 can be accumulated in the cumulative transmission rate calculation unit 130 as the cumulative transmission rate.

Alternatively, the flow rate sensor 120 may be an integrating flowmeter capable of being integrated. In this case, the cumulative flow rate calculation unit 130 may be provided with the integrated value in the integrated flowmeter.

The flow sensor 120 may be installed at a rear end of the filter unit 110 in order to prevent damage due to foreign matter contained in the incoming water and accurately measure the amount of water filtered by the filter unit 110.

The cumulative quantity calculation unit 130 can calculate the cumulative quantity of water passing through the filter unit 110 based on the flow rate detected by the flow rate sensor 120. [ The cumulative quantity calculation unit 130 may output the calculated cumulative quantity to the control unit 140. [

The control unit 140 can adjust the magnitude of the voltage applied to the electrodes 112a and 112b based on the cumulative quantity calculated by the cumulative quantity calculation unit 130. [

Specifically, the control unit 140 may adjust the magnitude of the voltage using a look-up table of the removal rate of the solid material according to the cumulative volume of the voltage.

Here, as shown in FIG. 3, the removal rate of the solid material by the magnitude of the voltage applied to the electrodes 112a and 112b may vary depending on the cumulative volume.

Therefore, when a constant voltage is applied to the electrodes 112a and 112b regardless of the cumulative volume, the TDS value of the water flowing through the filter unit 110 varies. Such a problem may occur before the filter unit 110 is installed and the stabilizer (for example, when the cumulative quantity of water is 20 L) is reached.

In order to solve the above problems, the controller 140 controls the magnitude of the voltage using the look-up table for the removal rate of the solid material according to the cumulative volume of the voltage, The TDS value of water can be kept constant.

In one embodiment, the control unit 140 may include a lookup table storage unit 142, an adjustment voltage calculation unit 144, and a voltage adjustment unit 146, as shown in FIG.

The lookup table storage unit 142 may store a lookup table including a removal rate of the solid matter depending on the cumulative volume of the voltage applied to the electrodes 112a and 112b.

The adjustment voltage calculator 144 may calculate the adjustment voltage value according to the cumulative volume using the lookup table.

Specifically, the regulated voltage calculator 144 may calculate the regulated voltage value by dividing the regulator removal ratio by the removal rate of the solid material according to the accumulated flow rate, and then multiplying the regulator applied voltage value.

Table 1 below shows the look-up table for the removal rate of the solid material according to the cumulative volume when the applied voltage is 70 V.

Cumulative volume (L) Removal rate (%) One 71.5 2 76.1 3 77.2 4 77.5 5 77.1 6 78.0 7 78.6 8 78.9 9 79.1 10 79.0 11 78.8 12 78.7 13 78.9 14 79.2 15 79.6 16 79.5 17 79.7 18 79.5 19 79.5 20 79.4

Referring to Table 1, when the voltage applied to the electrodes 112a and 112b is 70 V, the ballast removal rate may be 79.4%, which is the removal rate when the cumulative flow rate is 20 L.

When the cumulative quantity received from the cumulative quantity calculation unit 130 is 5L, the adjustment voltage calculator 144 extracts 77.1% of the removal rate when the cumulative quantity of water is 5L with reference to the lookup table , The value obtained by dividing the ballast removal rate of 79.4 by 77.1 is multiplied by the ballast applied voltage of 70 V to obtain the regulated voltage value of 72.1 V. [

The voltage regulator 146 may control the power controller 114 to apply a voltage having the regulated voltage value calculated by the regulator voltage calculator 144 to the electrodes 112a and 112b.

According to one embodiment of the present invention, there may be a water processor (not shown) that provides filtered constants in the filter portion 110, including the deionization filter device 100 of FIG.

FIG. 5 is a flowchart illustrating a method of controlling a deionization filter apparatus according to an embodiment of the present invention. FIG. 6 is a flowchart illustrating an operation of adjusting the voltage level of FIG.

Hereinafter, a control method of the deionization filter device according to an embodiment of the present invention will be described with reference to FIGS. 5 to 6. FIG. However, since the control method of the deionization filter device described below is performed in the deionization filter device described above with reference to Figs. 1 to 4, the same or similar contents to those described above will not be described redundantly.

Referring to FIG. 5, first, the power control unit 114 may apply the voltages of the electrodes 112a and 112b under the control of the controller 140 (S110). Next, the flow rate sensor 120 can detect the flow rate of the water that has passed through the filter unit 110 (S120).

Next, the cumulative quantity calculation unit 130 may calculate the cumulative quantity based on the detected flow rate (S130).

Next, the control unit 140 controls the power supply control unit 114 to adjust the voltage applied to the electrodes 112a and 112b according to the calculated accumulated flow rate (S140).

In one embodiment, the step of adjusting the voltage (S140) may be performed by the control unit 140 using a look-up table for the removal rate of the solid matter according to the cumulative volume of the voltage.

More specifically, the step of adjusting the voltage (S140) may include calculating (S142) an adjusted voltage value according to the calculated cumulative volume using the lookup table as shown in FIG. 6, (S144) adjusting the voltage applied to the first and second electrodes 112a and 112b.

Here, the look-up table may include a ballast removal rate and a ballast applied voltage value. In the adjustment voltage calculation step (S142), the ballast removal rate is divided by the removal rate of the solid material according to the cumulative flow rate, And the control voltage value can be calculated by multiplying the voltage value.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the particular forms disclosed. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: deionization filter device
110:
112a, 112b:
114:
120: Flow sensor
130: Cumulative quantity calculation unit
140:
142: Look-up table storage unit
144: Adjusting voltage calculating section
146:

Claims (10)

A filter unit including an electrode for adsorbing solid matter contained in the incoming water and a power supply control unit for applying a voltage to the electrode;
A flow rate sensor for detecting the flow rate of the purified water passing through the filter section;
An accumulated quantity calculation unit for calculating an accumulated quantity of purified water passing through the filter unit based on the flow rate detected by the flow rate sensor; And
A controller for controlling the magnitude of a voltage applied to the electrode according to the cumulative volume;
And a deionization filter device.
The apparatus of claim 1,
And the magnitude of the voltage is adjusted by using a look-up table for the removal rate of the solid material according to the cumulative volume of water according to the magnitude of the voltage.
3. The apparatus of claim 2,
A lookup table storage unit for storing the lookup table;
An adjusting voltage calculator calculating an adjusted voltage value according to the cumulative amount of water using the lookup table; And
A voltage regulator for controlling the power controller to apply a voltage having the regulated voltage value to the electrode;
And a deionization filter device.
The method of claim 3,
Wherein the look-up table comprises a ballast removal rate and a ballast applied voltage value.
5. The apparatus according to claim 4,
And dividing the ballast removal rate by the removal rate of the solid material according to the cumulative flow rate, and then multiplying the stabilizer applied voltage value to calculate the regulated voltage value.
6. The water treatment apparatus according to any one of claims 1 to 5, comprising the deionization filter device.
A control method of a deionization filter device for removing a solid material contained in an incoming water by applying a voltage to the electrode,
Applying a voltage to the electrode;
Detecting a flow rate of water filtered by the applied voltage;
Calculating an accumulated flow rate based on the detected flow rate; And
Adjusting the magnitude of the voltage using a look-up table for the removal rate of the solid material according to the accumulated amount of the voltage according to the magnitude of the voltage;
Lt; RTI ID = 0.0 > 1, < / RTI >
8. The method of claim 7, wherein the step of adjusting the magnitude of the voltage comprises:
Calculating an adjusted voltage value according to the cumulative volume using the lookup table; And
Adjusting a voltage applied to the electrode with the adjusted voltage value; Lt; RTI ID = 0.0 > 1, < / RTI >
9. The apparatus of claim 8, wherein the look-
A method of controlling a deionization filter device comprising a ballast removal rate and a ballast applied voltage value.
10. The method of claim 9, wherein calculating the regulated voltage value comprises:
Dividing the ballast removal rate by the removal rate of the solid material according to the cumulative flow rate, and then multiplying the ballast application voltage value to calculate the regulated voltage value.

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