The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 2024
Filed:
Jun. 16, 2020
Baxter International Inc., Deerfield, IL (US);
Baxter Healthcare SA, Glattpark, CH;
Peter Sendelius, Staffanstorp, SE;
Carl-Henry öä Örndal, Eslöv, SE;
Angelica Persson, Lund, SE;
Pontus Lundberg, Lund, SE;
Baxter International Inc., Deerfield, IL (US);
Baxter Healthcare SA, Glattpark, CH;
Abstract
A water purification apparatus () comprising a Reverse Osmosis, RO, device (). The RO device () comprises a RO membrane () and a feed pump (). The apparatus () also comprises a recirculation mechanism () arranged to recirculate a portion of the reject water to the feed water, a temperature sensor device arranged to measure a temperature indicative of the temperature of the RO membrane (), and a flow rate sensor device arranged to measure a flow rate indicative of the permeate flow rate of the permeate water. The apparatus () further comprises a control arrangement () configured to control recirculation to achieve a predetermined recovery ratio. The control arrangement () is also configured to control the rate of the feed pump (), based on the measured temperature indicative of the temperature of the RO membrane () and a desired permeate conductivity, to make the permeate flow rate equal to, or within a predetermined margin of, an energy efficient permeate flow rate determined based on a predetermined relation between RO membrane temperature, permeate flow rate and permeate conductivity. The disclosure also related to a corresponding method.