Patent ID: 11964238
Assignee: NEPHROS INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A flushable filter system comprising:
a first filter unit having first filter media contained within a first filter housing, the first filter housing having a first inlet, a first outlet and a first flush port;
a first inlet valve that is configured to control flow of unpurified liquid into the first inlet;
a first flush port valve that is configured to control flow of at least one of unpurified liquid and purified liquid from the first filter housing;
a second filter unit having second filter media contained within a second filter housing, the second filter housing having a second inlet, a second outlet and a second flush port;
a second inlet valve that is configured to control flow of unpurified liquid into the second inlet; and
a second flush port valve that is configured to control flow of at least one of unpurified liquid and purified liquid from the second filter housing;
wherein the flushable filter system is configured such that one of the first filter unit and the second filter unit has the following cleaning states: (1) forward flush, (2) back flush, and (3) simultaneous forward and back flush;
wherein when the first filter unit is forward-flushed, unpurified liquid flows from the first inlet through the first filter media to the first flush port while the second filter does not receive unpurified liquid, and conversely, when the second filter unit is forward flushed, unpurified liquid flows from the second the second filter media to the second flush port while the first filter does not receive unpurified liquid.