公开(公告)号：US20190070559A1

公开(公告)日：2019-03-07

申请号：US16079659

申请日：2017-04-11

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Biyong Qiu

IPC: B01D61/04 ,  B01D61/10 ,  C02F1/00 ,  C02F1/44

Abstract: A household water purification system provided in the present model mainly includes: a pre-filter; a reverse osmosis membrane filter element; a first one-way valve and a second one-way valve; a switching device, used for connecting or disconnecting a water path between a water outlet of the pre-filter and a water inlet of the reverse osmosis membrane filter element; a water storage tank, having a first cavity used for accommodating pure water and a second cavity used for accommodating tap water treated by the pre-filter; a water tap, having a water inlet communicating with a water outlet of the second one-way valve through a water path; and a mechanical automatic reversing valve, used for connecting a water path between a second port and a fourth port and meanwhile disconnecting a water path between a third port and the fourth port; or disconnecting a water path between a second port and a fourth port and meanwhile connecting a water path between a third port and the fourth port according to a change in pressure of a first port of the mechanical automatic reversing valve. The household water purification system provided in the present model not only can reduce equipment costs, fault rate, and safety risk, but also can improve use comfort of a user.

公开(公告)号：US20240367110A1

公开(公告)日：2024-11-07

申请号：US18565624

申请日：2021-05-31

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Biyong Qiu ,  Jianhua Wang ,  John M. Pilgrim ,  Dian Zheng ,  Jie Ying Luo ,  Jon P. Kragness

IPC: B01D61/10 ,  B01D61/02 ,  B01D61/04 ,  B01D61/08 ,  C02F1/28 ,  C02F1/44

Abstract: A booster unit (40) and a reverse osmosis filtration system (100). The booster unit (40) includes: a booster pump (45), wherein the pump fluid outlet (4512) is connected to a fluid outlet port (P2); and a housing. The housing includes an outer housing (41) and an inner housing (42) at least partially mounted in the outer housing (41). The booster pump (45) is provided in an inner cavity of the inner housing (42). A fluid channel is formed between the outer housing (41) and the inner housing (42); a fluid inlet of the fluid channel is connected to a fluid inlet port (P1) of the booster unit (40), and a fluid outlet of the fluid channel is connected to a pump fluid inlet (4511) of the booster pump (45). The reverse osmosis filtration system (100) comprises the booster unit (40).

公开(公告)号：US10932548B2

公开(公告)日：2021-03-02

申请号：US16476615

申请日：2018-01-15

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Biyong Qiu

IPC: A45F3/18 ,  B01D61/02 ,  B01D61/10 ,  C02F1/44

Abstract: A water storage tank is provided with a water storage bag for storing finished water and a space for accommodating squeezed water outside of the water storage bag. The water storage tank enables a rapid introduction of squeezed water by having a flow guiding groove connected in communication with the space for accommodating squeezed water. A hollow tube extending into the water storage bag is arranged to prevent distortion of the water storage bag, so as to completely squeeze the finished water out of the bag. A cylindrical middle part and two ellipsoidal or hemispherical ends of the water storage tank can improve the stress bearing performance of the water storage tank. A household water purifier using the water storage tank is also described.