Recharge and filter cartridge

A recharge and filter assembly including a housing with an inlet and an outlet, and a filter cartridge disposed within the housing, said filter cartridge including:

• a ring of filter media having a first end, a second end, and circumscribing a central cavity;
• a first end cap fixed to the first end of the media ring and a second end cap fixed to the second end of the media ring;
• a cylindrical imperforate weir inwardly supporting the media ring and extending from a first end supported by the second end cap to a distal end toward the first end cap, and an annular flow passage defined between the distal end of the weir and the first end cap allowing fluid flow between the media and a central cavity internally of the weir;
• and
• a recharge canister supported in the central cavity of the ring of filter media between said first and second end caps, the recharge canister having a cylindrical body and an annular flow path between the recharge canister body and the weir, the weir having an annular first seal around its periphery sealing to the recharge canister body at an axial location along the body such that fluid passing from the inlet radially through the filter ring and the flow passage is directed against one end of the recharge canister and prevented from passing directly into the annular flow path, the recharge canister including a flow opening through an annular sidewall of the canister to allow fluid to pass from the one end of the recharge canister into the annular flow path between the weir and the recharge canister, the flow path extending to a central opening in the second end cap and then to the outlet.

A recharge and filter assembly including a housing with an inlet and an outlet, and a filter cartridge disposed within the housing, said filter cartridge including:

• a ring of filter media having a first end, a second end, and circumscribing a central cavity;
• a first end cap fixed to the first end of the media ring and a second end cap fixed to the second end of the media ring, the second end cap including an opening allowing fluid communication with the outlet;
• and
• a recharge canister supported in the central cavity of the ring of filter media between said first and second end caps, the recharge canister having a first end and a second end, means for defining a first flow path through the media to the first end of the recharge canister, and means for defining a second flow path, separate from the first flow path, from the first end of the recharge canister and between the filter media ring and the recharge canister to the opening in the second end cap and then to the outlet, and
• a switch assembly located in the housing, said switch assembly including an elongated member projecting axially through the opening in the second end cap into contact with the other end of the recharge canister.