Cdi-type water treatment device

Patent metadata

Field	Value
Publication number	US-2016355418-A1
Application number	US-201415103199-A
Country	US
Kind code	A1
Filing date	Dec 9, 2014
Priority date	Dec 23, 2013
Publication date	Dec 8, 2016
Grant date	—

Abstract

A CDI-type water treatment device according to the present invention comprises: a filter unit for purifying raw water in a CDI type through an electrode part formed by alternately stacking electrodes and separators; and a sterilization unit provided on the front of the filter unit to supply the electrode part with a sterilization substance, which has been generated from the raw water in order to sterilize the electrode part. The sterilization unit, in this case, preferably operates after a predetermined time has passed since the electrode part has both stopped purifying raw water and stopped regenerating the electrodes.

First claim

1 . A CDI-type water treatment device, comprising:
a filter unit for purifying raw water in a CDI type through an electrode part formed by alternately stacking electrodes and separators; and
a sterilization unit provided on the front of the filter unit to supply the electrode part with a sterilization substance, which has been generated from the raw water in order to sterilize the electrode part.

2 . The device of claim 1 , wherein the sterilization unit reduces chlorine ion (Cl—) in the raw water to chlorine (Cl 2 ) in order to generate the sterilization substance in the raw water.

3 . The device of claim 2 , wherein the sterilization unit comprises:
a sterilization terminal part coated with ruthenium oxide (RuOx); and a sterilization case part accommodating the sterilization terminal part.

4 . The device of claim 3 , wherein the device further comprises a control unit controlling power supplied to the sterilization terminal part.

5 . The device of claim 4 , wherein among a water-purifying mode for purifying the raw water at the electrode part, a regeneration mode for regenerating an electrode of the electrode part, and a sterilization mode for sterilizing bacteria in the electrode part, the control unit performs a control of supplying power to the sterilization terminal part when in the sterilization mode.

6 . The device of claim 5 , wherein the sterilization mode is performed after a predetermined time passes with the water-purifying mode and the regeneration mode not performed.

7 . The device of claim 5 , wherein the control unit controls a strength of power to be supplied to the sterilization terminal part in the sterilization mode according to total dissolved solids (TDS) of the raw water.

8 . The device of claim 5 , wherein the control unit controls a strength of power to be supplied to the sterilization terminal part in the sterilization mode according to a strength of current flowing in the electrode part when a certain voltage is applied to the electrode part in the water-purifying mode.

9 . The device of claim 1 , wherein the filter unit discharges purified water in a water-purifying mode for purifying raw water at the electrode part, discharges regeneration water in a regeneration mode for regenerating an electrode of the electrode part, has an inlet to which the raw water is supplied and an outlet from which the purified water or the regeneration water is discharged, and comprises a filter case part accommodating the electrode part.

10 . The device of claim 9 , wherein the raw water is supplied to the inlet or outlet through the sterilization unit.

11 . The device of claim 9 , wherein the raw water is supplied to the inlet through the sterilization unit by a first flow rate during the operation of the sterilization unit for a first sterilization for the electrode part.

12 . The device of claim 11 , wherein the raw water is supplied to the outlet through the sterilization unit by a second flow rate during the operation of the sterilization unit for a second sterilization for the electrode part.

13 . The device of claim 12 , wherein the raw water is supplied to the outlet through the sterilization unit by a third flow rate, which is greater than the first flow rate or the second flow rate, for back washing of the electrode part.

14 . (canceled)

15 . (canceled)

16 . The device of claim 9 , wherein the device further comprises:
a supply unit supplying the raw water to the filter unit; a purge unit purging the purified water to a user; a discharge unit discharging the regeneration water to the outside; a valve unit including a supply valve installed on a flow path passing from the supply unit to the inlet; a purge valve installed on a flow path passing from the outlet to the purge unit; a discharge valve installed on a flow path passing from the outlet to the discharge unit; a washing valve installed on a flow path passing from a front of the supply valve to the outlet; and a drain valve installed on a flow path passing from a rear of the supply valve to the outside; and
a control unit controlling an opening and closing of the valves.

17 . The device of claim 16 , wherein the control unit performs a control of opening the supply valve, closing the discharge valve, opening the purge valve, closing the washing valve, and closing the drain valve, during non-operation of the sterilization unit in the water-purifying mode.

18 . The device of claim 16 , wherein the control unit performs a control of opening the supply valve, opening the discharge valve, closing the purge valve, closing the washing valve, and closing the drain valve, during non-operation of the sterilization unit in the regeneration mode.

19 . The device of claim 16 , wherein the control unit performs a control of opening the supply valve, opening the discharge valve, closing the purge valve, closing the washing valve, and closing the drain valve, during operation of the sterilization unit for a first sterilization for the electrode part in the sterilization mode.

20 . The device of claim 19 , wherein the control unit performs a control of closing the supply valve, closing the discharge valve, closing the purge valve, opening the washing valve, and opening the drain valve, during operation of the sterilization unit for a second sterilization for the electrode part in the sterilization mode.

21 . The device of claim 20 , wherein the control unit performs a control of closing the supply valve, closing the discharge valve, closing the purge valve, opening the washing valve, and opening the drain valve for back washing of the electrode part in the sterilization mode.

22 . (canceled)

23 . (canceled)

Assignees

• Coway Co Ltd

Inventors

• Lee Soo Young
• Kwon Tae Seong
• Moon Hyoung Min
• Park Byung Kil
• Moon Sung Min

Classifications

• C02F2303/04

  Disinfection · CPC title

• C02F2209/10

  Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS] · CPC title

• C02F1/4691 Primary

  Capacitive deionisation · CPC title

• C02F1/4674

  with halogen or compound of halogens, e.g. chlorine, bromine · CPC title

• C02F2305/02

  Specific form of oxidant · CPC title