Patent ID: 6350379
Filing Date: 2002-02-26
Classification: B01D,F01M,Y10S

Abstract:
A filter cartridge for filtering a fluid comprising:a canister having a first end with radially-disposed inlet openings and a centrally-disposed outlet opening and having a closed second end; a first filter element having a first annular filter media defining a first substantially cylindrical hollow core communicating directly with the outlet opening, the first filter element being disposed adjacent the first end of the canister; a second filter element having a second annular filter media defining a second substantially cylindrical hollow core, the second filter element being stacked axially on the first filter element with the second hollow core communicating only with the first hollow core, and a flow deflecting element directly connecting the second hollow core to the first hollow core, the flow deflecting element comprising a flow deflector within an annular channel formed about a central closed core, which flow deflector imparts a rotational component to the fluid as the fluid flows from the second hollow core into the first hollow core, whereby fluid flowing radially through the first filter media mixes with the rotating fluid which has been filtered by the second filter media and has passed through the flow deflecting element before passing axially through the outlet opening of the filter cartridge.