公开(公告)号：US10189727B2

公开(公告)日：2019-01-29

申请号：US15187689

申请日：2016-06-20

Applicant: NxStage Medical, Inc.

Inventor： William K Weigel ,  Goetz Friederichs ,  Joseph E Turk ,  Jefferey B Hover, Sr.

IPC: B01D61/42 ,  B01D61/54 ,  B01D65/02 ,  C02F1/469 ,  C02F1/32 ,  C02F1/44 ,  C02F1/00 ,  B01D61/52

Abstract: A fluid purification system has cells whose purifying capability can be regenerated. Some of the cells are arranged in series to reach a high level of purification. An automatic valve network is controlled to cycle the cells in a way that levels the loads on each, thereby maximizing the service interval for replacing expired cells, enabling all of the cells to be replaced at the same time after having each contributing approximately equally to the purification load, and operated such that at any one time, at least one cell is regenerated so as to enable continuous up-time.