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

Claim 10:
11. A flushable filter system comprising:
a main inlet conduit that branches into a first inlet conduit and a second inlet conduit at a first connector;
a main outlet conduit that includes a main outlet valve;
a first filter unit having first filter media contained within a first filter housing, the first filter housing having a first inlet that is fluidly connected to the first inlet conduit, a first outlet and a first flush port;
a first flush port conduit connected to the first flush port for delivering unpurified liquid to a drain;
a first inlet valve that is configured to control flow of unpurified liquid into the first inlet;
a first flush port valve that is disposed within the first flush port conduit and 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 that is fluidly connected to the second inlet conduit, a second outlet that is connected to the main outlet conduit and a second flush port;
a second inlet valve that is located along the second inlet conduit and is configured to control flow of unpurified liquid into the second inlet;
a second flush port conduit connected to the second flush port for delivering unpurified liquid to the drain;
a second flush port valve that is disposed within the second flush port conduit and is configured to control flow of at least one of unpurified liquid and purified liquid from the second filter housing; and
a secondary outlet conduit that branches off of the main outlet conduit at a second connector and is fluidly connected to the first outlet of the first filter unit at one end and to the second connector at the opposite end, wherein the main outlet valve is downstream of the second connector;
wherein the flushable filter system is configured such that one of the first filter unit and the second filter unit can undergo a cleaning operation, while the other of the first filter unit and the second filter unit produces purified liquid that is delivered to the first filter unit for back flushing thereof.