Sterilization system

Patent metadata

Field	Value
Publication number	US-10167208-B2
Application number	US-201514875742-A
Country	US
Kind code	B2
Filing date	Oct 6, 2015
Priority date	Feb 10, 2015
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

A sterilizing system according to the present invention includes a water supply apparatus provided with a filter unit having a plurality of filters, a water tank storing water purified by the filter unit, a water cock and water tank connection passages, and a sterilizer to sterilize the water supply apparatus, wherein the sterilizer comprises a sterilizing water generator, a circulation pump, a circulation passage, a rinsing water supply passage, a first drain passage and a first drain valve.

First claim

What is claimed is:

1. A sterilization system comprising:
a water supply apparatus provided with a filter unit, the filter unit having a plurality of filters configured to purify water supplied from a water supply unit, a water cock through which water purified by the filter unit is dispensed, and connection passages connecting the filter unit and the water cock to each other; and
a sterilizer configured to sterilize the water supply apparatus,
wherein the sterilizer comprises:
a sterilizing water generator that has electrodes and that is configured to generate sterilized water by using the electrodes to electrolyze water filtered by the filter unit;
a circulation pump configured to pump purified water discharged from the water supply apparatus such that the purified water circulates to the sterilizing water generator and returns to the water supply apparatus;
a circulation passage connected to the water cock to define a closed loop for circulation of purified water and sterilized water such that purified water or sterilized water is discharged from the water supply apparatus and circulates back to the water supply apparatus via the circulation pump and the sterilizing water generator; and
a rinsing water supply passage configured to supply water supplied from the water supply unit to the water supply apparatus to wash out the water supply apparatus,

wherein the water supply apparatus comprises a second water tank configured to heat purified water,
wherein the circulation passage extends from the water cock to the circulation pump,
wherein the sterilizer further comprises a first drain passage that is branched out from the circulation passage, the first drain passage having a first side connected to the circulation passage between the water cock and the circulation pump and a second side connected to an outside of the sterilizer, and
wherein the first drain passage is configured to drain out hot water discharged from the second water tank to the outside of the sterilizer based on the second water tank being sterilized.

2. The system of claim 1 , wherein
the first drain passage is configured to drain out purified water and sterilized water passed through the water supply apparatus to an outside of the water supply apparatus, and
wherein the sterilizer further comprises a first drain valve configured to open and close the first drain passage.

3. The system of claim 2 , wherein the sterilizer comprises:
a housing configured to accommodate the sterilizing water generator and the circulation pump; and
a plurality of ports provided at an outer surface of the housing,
wherein the plurality of ports comprise:
a first port that defines an insertion hole through which the rinsing water supply passage is connected to the circulation passage;
a second port that defines an insertion hole through which the circulation passage is connected to the circulation pump and the sterilizing water generator;
a fifth port that defines a draw-out hole through which the first drain passage is drawn out of the housing; and
a sixth port that defines a draw-out hole through which the circulation passage is connected to the water supply apparatus.

4. The system of claim 3 , wherein the water supply apparatus is a storage type water purifier,
wherein the storage type water purifier comprises:
a water storage tank configured to store purified water discharged from the filter unit; and
a first water tank configured to cool and store purified water discharged from the water storage tank,

wherein the second water tank is configured to heat and store purified water discharged from the water storage tank, and
wherein the storage type water purifier provides at least one of purified water, cold water, or hot water.

5. The system of claim 4 , wherein the storage type water purifier comprises a second water tank introduction passage having a first side connected to the water storage tank and a second side connected to the second water tank, and the storage type water purifier is configured to introduce purified water discharged from the water storage tank into the second water tank,
wherein the sterilizer further comprises:
a second drain passage having a first side connected to the second water tank introduction passage and a second side connected to an outside of the water supply apparatus, the second drain passage being configured to drain out hot water and sterilizing water from the second water tank introduction passage; and
a second drain valve installed in the housing and configured to open and close the second drain passage,

wherein the plurality of ports comprise:
a third port that defines an insertion hole through which the second drain passage is connected to the second drain valve; and
a fourth port that defines a draw-out hole through which the second drain passage is drawn out of the housing.

6. The system of claim 4 , wherein the sterilizer comprises a control unit configured to control operations of the circulation pump and the sterilizing water generator.

7. The system of claim 6 , wherein the sterilizer comprises a water flow sensor configured to detect a flow rate of water introduced into the sterilizing water generator, and
wherein the control unit is configured to control operation of the sterilizing water generator according to a detection signal input from the water flow sensor to initially circulate the purified water to the sterilizing water generator before operation of the sterilizing water generator.

8. The system of claim 6 , wherein the water supply apparatus is a direct type water purifier, and
wherein the control unit is configured to control the first drain valve such that water from the water supply unit or purified water flowing along the circulation passage is initially drained out before operation of the sterilizing water generator, thereby externally discharging air bubbles from the circulation passage connecting the direct type water purifier and the sterilizing water generator.

9. The system of claim 3 , wherein the water supply apparatus is a direct type water purifier,
wherein the direct type water purifier comprises
a first water tank configured to cool purified water discharged from the filter unit,

wherein the second water tank is configured to heat purified water discharged from the filter unit, and
wherein the direct type water purifier provides at least one of purified water, cold water or hot water.

10. The system of claim 9 , wherein the sterilizer comprises a control unit configured to control operations of the circulation pump and the sterilizing water generator.

11. The system of claim 10 , wherein the sterilizer comprises a water flow sensor configured to detect a flow rate of water introduced into the sterilizing water generator, and
wherein the control unit is configured to control operation of the sterilizing water generator according to a detection signal input from the water flow sensor to initially circulate the purified water to the sterilizing water generator before operation of the sterilizing water generator.

12. The system of claim 10 , wherein the water supply apparatus is a direct type water purifier, and
wherein the control unit is configured to control the first drain valve such that water from the water supply unit or purified water flowing along the circulation passage is initially drained out before operation of the sterilizing water generator, thereby externally discharging air bubbles from the circulation passage connecting the direct type water purifier and the sterilizing water generator.

13. The system of claim 3 , wherein the circulation passage extends from

Assignees

• Lg Electronics Inc

Inventors

• Lee Changgeun
• Kim Youngjin
• Baek Kowoon

Classifications

• C02F2307/10

  as part of a potable water dispenser, e.g. for use in homes or offices · CPC title

• C02F1/444

  by ultrafiltration or microfiltration · CPC title

• C02F1/001

  Processes for the treatment of water whereby the filtration technique is of importance (C02F1/44 takes precedence; construction of filters in general B01D24/00 - B01D41/00) · CPC title

• C02F2201/46145

  Fluid flow · CPC title

• C02F2307/12

  as part of household appliances such as dishwashers, laundry washing machines or vacuum cleaners · CPC title