US 11,766,639 B2
Water purification apparatus and methods for cleaning the water purification apparatus
Peter Sendelius, Staffanstorp (SE); Henrik Lindgren, Genarp (SE); Olof Jansson, Vellinge (SE); Carl-Henry Örndal, Eslöv (SE); Per-Ola Wictor, Stehag (SE); and Robert Hallström, Lund (SE)
Assigned to Baxter International Inc., Deerfield, IL (US); and Baxter Healthcare SA, Glattpark (CH)
Appl. No. 16/618,996
Filed by Baxter International Inc., Deerfield, IL (US); and Baxter Healthcare SA, Glattpark (CH)
PCT Filed May 15, 2018, PCT No. PCT/EP2018/062462
§ 371(c)(1), (2) Date Dec. 3, 2019,
PCT Pub. No. WO2018/228765, PCT Pub. Date Dec. 20, 2018.
Claims priority of application No. 1750759-1 (SE), filed on Jun. 15, 2017.
Prior Publication US 2020/0129927 A1, Apr. 30, 2020
Int. Cl. B01D 65/02 (2006.01); A61M 1/16 (2006.01); B01D 61/02 (2006.01); B01D 61/08 (2006.01); B01D 61/12 (2006.01); B01D 61/48 (2006.01); C02F 1/00 (2023.01); C02F 1/44 (2023.01); C02F 1/469 (2023.01); C02F 1/28 (2023.01); C02F 101/12 (2006.01); C02F 101/36 (2006.01); C02F 103/02 (2006.01)
CPC B01D 65/027 (2013.01) [A61M 1/1686 (2013.01); A61M 1/1688 (2014.02); B01D 61/025 (2013.01); B01D 61/08 (2013.01); B01D 61/12 (2013.01); B01D 61/48 (2013.01); B01D 65/022 (2013.01); C02F 1/008 (2013.01); C02F 1/441 (2013.01); C02F 1/4695 (2013.01); B01D 2311/25 (2013.01); B01D 2311/2626 (2013.01); B01D 2311/2649 (2013.01); B01D 2311/2684 (2013.01); B01D 2321/08 (2013.01); C02F 1/001 (2013.01); C02F 1/283 (2013.01); C02F 2101/12 (2013.01); C02F 2101/36 (2013.01); C02F 2103/026 (2013.01); C02F 2209/02 (2013.01); C02F 2209/40 (2013.01); C02F 2209/44 (2013.01); C02F 2301/046 (2013.01); C02F 2303/04 (2013.01)] 30 Claims
OG exemplary drawing
 
16. A method for cleaning a water purification apparatus configured to produce purified water, the water purification apparatus including a reverse osmosis device configured to produce a purified fluid flow and a reject fluid flow, the method comprising:
controlling heating of purified fluid in the purified fluid flow downstream from the reverse osmosis device,
re-circulating the heated purified fluid in a first fluid path from a point downstream from a heater to a tank arranged in a feed fluid path upstream from the reverse osmosis device until a first temperature dependent criterion is fulfilled,
re-directing the heated purified fluid to flow in a second fluid path of the water purification apparatus in response to the first temperature dependent criterion being fulfilled, and
controlling heating of the re-directed heated purified fluid such that a second temperature dependent disinfection criterion for the second fluid path is fulfilled.