Multi-stage water filter system

Details Multi-stage water filter system Multi-stage water filter system

C - Chemistry, Metallurgy

02

F

C02F 1/28 (2006.01) C02F 1/00 (2006.01)

Patent

CA 2250558

A water filter system having a housing for a plurality of serial-flow connected filter cartridges with distinct filtering characteristic related to the direction of flow of water being filtered. Each filter cartridge has a membrane wrapped activated carbon filter body. One of the filter bodies includes a heavy metal bacteriostat. The cartridges are each releasably retained in a manifold by keyed connectors including rotatable locking rinqs. Each cartridge having a distinct filtering characteristic includes a keying structure to ensure that the cartridge can only be connected to the manifold for placement in proper serial-flow relationship in the system. The filter system includes a spent filter cartridge indicator. The filter system is particularly suited for countertop placement and connection to a faucet.

Cette invention concerne un système de filtration d'eau comportant un corps destiné à loger plusieurs cartouches filtrantes montées en série ayant une action filtrante adaptée à leur emplacement le long du flux d'eau à filtrer. Chaque cartouche comporte un corps filtrant au charbon activé enveloppé dans une membrane. Une des cartouches comporte un élément bactériostatique aux métaux lourds. Les cartouches sont retenues de façon amovible dans un collecteur au moyen de raccords à clavettes comportant des anneaux de verrouillage tournants. Les diverses cartouches différenciées par leur caractéristique propre de filtrage comporte ont un clavetage détrompeur empêchant les erreurs de positionnement le long du collecteur. Le système est équipé d'un indicateur d'épuisement des filtres. Il est particulièrement bien adapté à montage sur robinet de comptoir.

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