Patent ID: 9463988
Filing Date: 2016-10-11
CPC Classification: B01D,B33Y,C02F,C25B,H01F,Y10T

Claim Text:
1. A cell stack for an electrical purification apparatus comprising: a plurality of alternating ion depleting compartments and ion concentrating compartments, each alternating ion depleting compartment and ion concentrating compartment defined by an anion exchange membrane and a cation exchange membrane, each of the ion depleting compartments having an inlet and an outlet to provide a dilute fluid flow in a first direction and each of the ion concentrating compartments having an inlet and an outlet to provide a concentrated fluid flow in a second direction that is different from the first direction; and a blocking spacer comprising a screen portion positioned inside of at least one of the ion depleting compartments and ion concentrating compartments, and a solid portion positioned outside of the at least one ion depleting compartment and ion concentrating compartment, the solid portion configured to redirect fluid flow through the cell stack.