Filter apparatus with vented core

A liquid filtering apparatus comprising:

• a bowl comprising an open end, a distal end opposite of the open end, and an interior that extends between the open end and the distal end;
• a manifold that is capable of sealingly engaging the open end of the bowl, the manifold comprising a fluid inlet and a fluid outlet;
• a cartridge assembly disposed at the interior, the cartridge assembly comprising a filter membrane, a cartridge assembly proximal end, and a cartridge assembly distal end, the cartridge assembly proximal end including a surface that is adapted to contact a surface of the manifold to form a cartridge assembly-manifold seal, and the cartridge assembly distal end including a surface that is adapted to contact an interior surface of the bowl to form a cartridge assembly-bowl seal at the interior;
• a core volume at a central inner side of the cartridge assembly;
• a housing volume at an outer side of the cartridge assembly between the cartridge assembly and the bowl;
• and
• a vent extending through the bowl distal end to a lower end at a lower portion of the core volume with respect to the bowl distal end to fluidly connect the core volume with an exterior of the liquid filtering apparatus.

A method of filtering a liquid using a liquid filtering apparatus, the method comprising:

• passing the fluid into the liquid filtering apparatus, wherein the liquid filtering apparatus comprises a housing that includes a manifold and a bowl, with the bowl situated vertically above the manifold, the housing comprising:
• the bowl, which comprises an open end, a distal end opposite of the open end, and an interior that extends between the open end and the distal end,
• the manifold, which is engaged with the open end of the bowl to form a manifold-bowl seal, the manifold comprising a fluid inlet and a fluid outlet,
• a cartridge assembly disposed at the interior, the cartridge assembly comprising a filter membrane, a cartridge assembly proximal end, and a cartridge assembly distal end, the cartridge assembly proximal end including a surface that is adapted to contact a surface of the manifold to form a cartridge assembly-manifold seal, and the cartridge assembly distal end including a surface that is adapted to contact an interior surface of the bowl to form a cartridge assembly-bowl seal at the interior,
• a core volume at a central inner side of the cartridge assembly,
• a housing volume at an outer side of the cartridge assembly between the cartridge assembly and the bowl, and
• a vent extending through the bowl distal end to a lower end at a lower portion of the core volume with respect to the bowl distal end to fluidly connect the core volume with an exterior of the housing;
• passing the liquid in the inlet, from the inlet through the housing volume, through the filter membrane, to the core volume, and then through the outlet, wherein gas accumulates at a distal region of the core volume;
• and
• releasing the gas through the vent.