Spiral wound type filter cartridge

Abstract

Disclosed herein is a spiral wound type filter cartridge and more specifically, a spiral wound type filter cartridge in which activated carbon fiber is provided. The inside of spiral wound type filter cartridge is capable of serving as a carbon filter in a water purifier, thus eliminating the necessity of the use of any carbon filter for pre- or post-treatment in the process of purifying raw water, reducing an overall size of the water purifier and considerably reducing costs associated therewith.

What is claimed is: 
     
         1 . A spiral wound type filter cartridge comprising:
 a filter tube provided with a purified-water outlet on one side thereof, the filter tube provided with a plurality of purified-water inlet holes in a longitudinal direction on the outside thereof, the filter tube being in the form of a pipe;   a filtering sheet comprising a membrane sheet composed of a two-fold sheet to provide a filter area therein and provided with a mesh sheet for membrane, and a mesh sheet provided with a channel and laminated on one or both surfaces of the membrane sheet, the filtering sheet being repeatedly wound on the filter tube in the form of a roll, while being fixed on the one side of the filter tube;   an adhesive sheet adhered to the filtering sheet such that the filtering sheet takes the circular housing appearance, while being wound on the filter tube; and   an activated carbon provided inside of the filter tube.   
     
     
         2 . The spiral wound type filter cartridge according to  claim 1 , wherein the activated carbon is integrally joined to the filter tube by filling a felt, non-woven fabric or paper type of activated carbon fiber, or particle- or block type of activated carbon therein. 
     
     
         3 . The spiral wound type filter cartridge according to  claim 1 , wherein activated carbon fiber is further provided in one or all of the mesh sheet for membrane and the mesh sheet. 
     
     
         4 . The spiral wound type filter cartridge according to  claim 3 , wherein the surface or inside of the activated carbon fiber sheet is coated or impregnated with an additive selected from the group consisting of germicides, antibacterials, mineral agents, pH adjusters and combinations thereof. 
     
     
         5 . The spiral wound type filter cartridge according to  claim 1 , wherein the filter tube and the filtering sheet constitute a housing body taking a circular housing appearance through the adhesive sheet and are arranged in a filter case,
 wherein the filter case comprises:   a body joined to the housing body so as to cover the housing body, the body being provided with a purified-water outlet hole in the rear thereof, to allow purified water to be discharged, while passing through the housing body; and   a cover joined in the front of the body and provided with a raw water inlet hole.   
     
     
         6 . The spiral wound type filter cartridge according to  claim 5 , wherein the filter cartridge further comprises:
 a filter block provided between an area present in the inside front of the filter case and an area present in the front of the housing body filter case.   
     
     
         7 . The spiral wound type filter cartridge according to  claim 6 , wherein the filter block comprises a felt, non-woven fabric, paper or cut shape of activated carbon fiber, or particulate or block activated carbon. 
     
     
         8 . The spiral wound type filter cartridge according to  claim 6 , wherein one or more outlet holes are further provided on the rear circumferential surface of the body constituting the filter case.