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1. (WO2018176488) COMPOSITE FILTER ELEMENT AND GRAVITY WATER PURIFIER

Pub. No.:    WO/2018/176488    International Application No.:    PCT/CN2017/079354
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Sun Apr 02 01:59:59 CEST 2017
IPC: B01D 29/58
C02F 1/00
Applicants: FOSHAN SHUNDE MIDEA WATER DISPENSER MFG. CO., LTD
佛山市顺德区美的饮水机制造有限公司
Inventors: KE, Yingchong
柯映充
LI, Zeping
黎泽平
SONG, Guodong
宋国栋
SUN, Tianhou
孙天厚
Title: COMPOSITE FILTER ELEMENT AND GRAVITY WATER PURIFIER
Abstract:
Disclosed are a composite filter element (1) and a gravity water purifier. The composite filter element (1) comprises: a primary filter element (11), and a secondary filter element (12) connected to the lower end of the primary filter element (11), wherein a ventilation passage (111) is provided in the primary filter element (11), the ventilation passage (111) extends upwards from a joint of the primary filter element (11) and the secondary filter element (12) to the upper end of the primary filter element (11), and a ventilation port (111a) is provided at the upper end of the ventilation passage (111).A ventilation component (112) is further provided at the upper end of the ventilation passage (111), the ventilation component (112) opening the ventilation port (111a) when subjected to an upward ventilation pressure from the ventilation passage (111), and sealing the ventilation port (111a) when the ventilation pressure disappears. The technical solution can prevent the phenomenon of air blockage at the joint of the primary filter element (11) and the secondary filter element (12).