Filter cartridge

Patent metadata

Field	Value
Publication number	US-9266043-B2
Application number	US-201113821064-A
Country	US
Kind code	B2
Filing date	Sep 7, 2011
Priority date	Sep 7, 2010
Publication date	Feb 23, 2016
Grant date	Feb 23, 2016

Abstract

Disclosed is a filter cartridge. The filter cartridge includes an inner filter in the form of an approximately cylindrical corrugated membrane, an outer filter in the form of an approximately cylindrical corrugated membrane, the outer filter having a diameter greater than that of the inner filter and being installed around the inner filter, and at least one holder to support the inner filter and the outer filter.

First claim

The invention claimed is:

1. A filter cartridge comprising:
an inner filter in the form of an approximately cylindrical corrugated membrane;
an outer filter in the form of an approximately cylindrical corrugated membrane, wherein
the outer filter has a diameter greater than that of the inner filter and is installed around the inner filter to define a space between the inner filter and the outer filter; and
at least one holder to support the inner filter and the outer filter,
wherein both ends of each of the inner filter and the outer filter in the form of a corrugated membrane are bonded to each other so as to be in an approximately cylindrical shape,
wherein a protrusion of the inner filter is disposed within a recess of the outer filter,
wherein an inner bonded portion of the inner filter is oriented to face the outer filter, and an outer bonded portion of the outer filter is oriented to face the inner filter in such a way that the inner bonded portion and the outer bonded portion remain within the space,
wherein at least a part of the inner bonded portion and at least a part of the outer bonded portion are overlapped with each other, and
wherein the inner bonded portion and the outer bonded portion are bonded by an organic adhesive,
whereby fine dust particles generated at the bonded portions when water moves outward through the outer filter or moves inward through the inner filter are confined between the outer filter and the inner filter.

2. The filter cartridge according to claim 1 , wherein the at least one holder has a disc shape and includes a first holder and a second holder arranged to correspond to both ends of the inner filter and the outer filter respectively.

3. The filter cartridge according to claim 2 , wherein the first holder has a central water inlet hole, into which water can be supplied from the outside.

4. The filter cartridge according to claim 1 , wherein the inner filter and the outer filter are formed of nano alumina fiber as a main material.

5. The filter cartridge according to claim 2 , further comprising a core, one end of which is secured to the first holder and the other end of which is secured to the second holder, wherein the core has a hollow cylindrical interior space such that the water introduced through the water inlet hole can be supplied to the filter, and wherein a water passage hole is perforated in a peripheral surface of the core.

Assignees

• Han Doo-Won
• Kim Dae-Hwan
• Kang Sang-Hyeon
• Coway Co Ltd

Inventors

• Han Doo-Won
• Kim Dae-Hwan
• Kang Sang-Hyeon

Classifications

• B01D29/111 Primary

  Making filtering elements · CPC title

• B01D63/14

  Pleat-type membrane modules · CPC title

• B01D29/21

  with corrugated, folded or wound sheets · CPC title

• B01D63/067

  with pleated membranes · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title