公开(公告)号：US20240238706A1

公开(公告)日：2024-07-18

申请号：US18554373

申请日：2021-04-08

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Biyong QIU ,  Dian ZHENG ,  Jon KRAGNESS

IPC: B01D35/157 ,  B01D29/11 ,  B01D29/56 ,  B01D35/30 ,  B01D61/02

CPC classification number: B01D35/1573 ,  B01D29/114 ,  B01D29/56 ,  B01D35/30 ,  B01D61/025 ,  B01D2201/167 ,  B01D2201/303

Abstract: The present disclosure relates to a filter head (20, 20A, 20B), a filter (1) and a filter assembly (100, 200). The filter head (20, 20A, 20B) includes: a filter head housing (30, 30A, 30B); a valve (40) mounted in an inner cavity of a housing body (31, 31A, 31B); and a filter head base (50) fixedly mounted to the filter head housing (30, 30A, 30B) so as to confine the valve (40)) in the filter head housing (30, 30A, 30B). The housing body (31, 31A, 31B) is provided with a raw water port (P1), a first water outlet port (P2) and a second water outlet port (P3). The valve (40) is configured to be rotatable relative to the filter head housing (30, 30A, 30B) to an open position or a closed position. In the open position, an inner cavity of a valve body (41) is in fluid communication with the raw water port (P1), the first water outlet port (P2) and the second water outlet port (P3). In the closed position, the inner cavity of the valve body (41) is not in fluid communication with any one of the raw water port (PI), the first water outlet port (P2) and the second water outlet port (P3). A filter cartridge (10) can be removed and mounted without closing a fluid pipeline connected to the filter (1), and suitable sealing is provided between the valve (40) and the filter head housing (30, 30A, 30B), thereby effectively preventing backflow and mixing of fluids.