Complex filter and water purifier including complex filter

Patent metadata

Field	Value
Publication number	US-9808751-B2
Application number	US-201013521528-A
Country	US
Kind code	B2
Filing date	Nov 8, 2010
Priority date	Jan 19, 2010
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

The present invention relates to a complex filter and to a water purifier including a complex filter. By providing a complex filter for a water purifier including an antibacterial hollow fiber membrane, activated carbon fibers, ion-exchange fibers, and one or more activated carbon layers arranged in an optimized combination, the size of a water purifier can be reduced, and excellent water-purifying performance and an improved service life can be provided.

First claim

The invention claimed is:

1. A complex filter for water purification, comprising: a housing; an inlet formed at an upper side of the housing, wherein water to be purified is introduced through the inlet; an outlet formed at a lower side of the housing, wherein the water to be purified is purified and then discharged through the outlet; a first activated carbon layer and a second activated carbon layer located between the inlet and the outlet, wherein the first activated carbon layer is a distance apart from the second activated carbon layer; first second and third activated carbon fiber layers configured to prevent granular activated carbons of the first activated carbon layer and the second activated carbon layer from being mixed with other layers, wherein the first activated carbon fiber layer is disposed at an upper side of the first activated carbon layer, the second activated carbon fiber layer is disposed between the first activated carbon layer and the second activated carbon layer, and the third activated carbon fiber layer is disposed below the second activated carbon layer; and a hollow fiber membrane-disposed between the third activated carbon fiber layer and the outlet.

2. The complex filter of claim 1 , wherein the granular activated carbons have a particle size of 48 to 200 meshes, an iodine number of 900 to 2000 mg/g, a pore volume of 0.3 to 0.8 cm 3 /g, a pore size micro of 14 to 20 Å, and a pore size meso of 30 to 37 Å.

3. The complex filter of claim 1 , wherein each of the activated carbon fiber layers has a block molding or a plurality of felt patterns.

4. The complex filter of claim 1 , comprising an ion exchange layer having a polymer and a functional group bonded with the polymer, and the ion exchange layer is disposed between the second activated carbon layer and the outlet, wherein the functional group includes a cation functional group, an anion functional group, and a chelate functional group.

5. The complex filter of claim 4 , wherein the cation functional group includes at least one of a sulfonate group (SO 3 H) and a carboxyl group (COOH).

6. The complex filter of claim 4 , wherein the anion functional group includes at least one of an oxime group (NOH) and an amino group (NH 2 ).

7. The complex filter of claim 1 , comprising at least one of KDF (Kinetic Degradation Fluxion), ATS, and silver ions.

Assignees

• Moon Kyunghee
• Lee Changho
• Oh Hyunhwan
• Lee Sangduck
• Joung Jeayoul
• Kye Jeongil
• Kim Min-Joung
• Lg Electronics Inc

Inventors

• Moon Kyunghee
• Lee Changho
• Oh Hyunhwan
• Lee Sangduck
• Joung Jeayoul
• Kye Jeongil
• Kim Min-Joung

Classifications

• C02F1/003

  using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices (C02F9/20 takes precedence) · CPC title

• C02F1/42

  by ion-exchange (ion-exchange in general B01J) · CPC title

• C02F2201/006

  Cartridges · CPC title

• B01D2239/065

  More than one layer present in the filtering material · CPC title

• B01D67/0093

  Chemical modification · CPC title