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.

公开(公告)号：US20240375026A1

公开(公告)日：2024-11-14

申请号：US18554344

申请日：2021-04-08

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Biyong QIU

IPC: B01D27/08 ,  B01D27/10 ,  B01D29/15 ,  B01D35/153

Abstract: The present disclosure relates to a filter cartridge and a filter. The filter cartridge includes: a filter cartridge housing portion, the filter cartridge housing portion being provided with a water inlet; and a filtration unit, the filtration unit being provided in the filter cartridge housing portion. The filtration unit is provided with a front filtration medium and a rear filtration medium. The filtration unit is configured to cause raw water flowing into the filter cartridge housing portion by means of the water inlet to be filtered by the front filtration medium to obtain a first filtered fluid, and the first filtered fluid selectively flows toward a first water outlet, and/or flows toward a second water outlet after being filtered by the rear filtration medium. The filter includes the above filter cartridge. The filter cartridge and the filter according to the present disclosure can filter raw water to different levels as desired, and have a simple structure and a compact arrangement, thereby reducing the space occupied by the filter.

公开(公告)号：US20240084562A1

公开(公告)日：2024-03-14

申请号：US17767646

申请日：2020-11-02

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Biyong QIU ,  JianYi SONG

IPC: E03C1/04 ,  F16K11/078

CPC classification number: E03C1/0404 ,  E03C1/0403 ,  F16K11/0782 ,  E03C2201/30 ,  E03C2201/40

Abstract: The present invention relates to a filtration system (1) having the faucet (20). The faucet (20) comprises: a mixing valve, wherein the mixing valve is provided with a first inlet passage, a second inlet passage, and a mixing valve outlet passage, wherein the first inlet passage is connected to a first fluid line (L2), and the second inlet passage is connected to a second fluid line (L3); an outflowing pipe (23), wherein one end of the outflowing pipe (23) is connected to the mixing valve outlet passage; and a mode selection device (25), wherein the mode selection device (25) being operable to selectively allow one or both of the first fluid line (L2) and the second fluid line (L3) to communicate with the mixing valve outlet passage. The faucet (20) further comprises a mixing ratio adjustment device, the mixing ratio adjustment device and the mode selection device (25) operating independently from each other. The faucet (20) and the filtration system (1) according to the present invention can simplify operation of the faucet (20), allow the faucet (20) to be more in line with user's operating habits, reduce the number of parts and components, and enable configuration of appropriate mixing ratios according difficult use environments, thereby expanding the application scope of the faucet (20) and filtration system (1).

公开(公告)号：US20240066469A1

公开(公告)日：2024-02-29

申请号：US18259689

申请日：2020-12-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Biyong QIU ,  Yan LIU

IPC: B01D61/12 ,  B01D61/02 ,  B01D61/08 ,  C02F1/44

CPC classification number: B01D61/12 ,  B01D61/025 ,  B01D61/081 ,  C02F1/441 ,  B01D2313/243 ,  C02F2209/03 ,  C02F2301/043

Abstract: A reverse osmosis filtration system (100, 100A, 100B, 100C), comprising: a raw water pipeline (L1); a reverse osmosis filtration unit (10, 10A, 10B, 10C) configured to filter raw water supplied by the raw water pipeline (L1); and a faucet (30, 30A, 30B, 30C) connected to the reverse osmosis filtration unit (10, 10A, 10B, 10C), wherein the faucet (30, 30A, 30B, 30C) is operable such that a water outlet (33) of the faucet (30, 30A, 30B, 30C) is selectively in communication with a product water outflow pipeline of the reverse osmosis filtration unit (10, 10A, 10B, 10C). The reverse osmosis filtration system (100, 100A, 100B, 100C) further comprises a pump unit (50, 50A, 50B, 50C) arranged between the raw water pipeline (L1) and the reverse osmosis filtration unit (10, 10A, 10B, 10C), wherein the pump unit (50, 50A, 50B, 50C) is configured to selectively pump the raw water in the raw water pipeline (L1) to the reverse osmosis filtration unit (10, 10A, 10B, 10C) according to a pressure in the product water outflow pipeline. The reverse osmosis filtration system (100, 100A, 100B, 100C) can operate stably even when a pressure in the raw water pipeline (L1) is low, can provide the operation stability of the reverse osmosis filtration system (100, 100A, 100B, 100C), and can realize on-demand water supply for the reverse osmosis filtration unit (10, 10A, 10B, 10C).

公开(公告)号：US20220194820A1

公开(公告)日：2022-06-23

申请号：US17604524

申请日：2020-04-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Biyong QIU

IPC: C02F1/44

Abstract: The present invention relates to a filter element and a filter having the filter element. The filter element comprises a filter element housing part, a water inlet disposed at the filter element housing part, a filter medium unit disposed in the filter element housing part, and a central pipe. The central pipe comprises a pure water collecting pipe and a wastewater collecting pipe, and the wastewater collecting pipe is at least partially disposed in the pure water collecting pipe. A wastewater passage and a pure water passage are arranged sequentially from the center to the circumference in the central pipe. The filter element and the filter according to the present invention has a more simplified filter element structure. By reducing the quantity of components, the filter is made more compact. The present invention can further accommodate positional errors within an allowed error range when the filter element is mounted to a local manifold 1 of the filter. Manufacturing precision requirements of filter components can thus be lowered and the cost can be reduced. The replacement and mounting of the filter element have therefore become easier.