REVERSE FLOW CARAFE FILTER CARTRIDGE

摘要

A carafe filter cartridge for reverse flow applications where the filter housing and filter media top end cap directs unfiltered fluid into the filter media annular cavity, through the filter media sidewalls. And the filter media bottom end cap prohibits egress, filter fluid from exiting through the filter media end or the annular cavity. Filtered fluid is instead directed out through apertures in the filter housing sidewall. The optimum ratio of annular cavity and/or top end cap orifice area to the respective perimeter is determined to remove the risk of detrimental fluid flow due to air bubble generation.

主权项

1. A filter cartridge for gravity-fed reverse flow filtering applications comprising:
a filter housing having a top, a bottom, and sidewalls having at least one aperture for fluid egress; a filter media insertable within said filter housing, said filter media shaped to have a central bore circumferentially surrounded by filter media sidewalls; a top end cap having an aperture to allow ingress fluid to said central bore, and sealed to prohibit fluid ingress to said filter media sidewalls except through said central bore; a bottom end cap configured to prohibit egress fluid from leaving said filter media; wherein ingress fluid enters said central bore and is directed through said filter media sidewalls, and exits through said at least one aperture of said filter housing sidewall.