Patent ID: 6666968
Filing Date: 2003-12-23
Classification: B01D,Y10S

Abstract:
Fluid filtration apparatus comprising:a housing structure having an internal flow path through which a fluid to be filtered maybe flowed; a full flow filtration structure operably interposed in said internal flow path, said full flow filtration structure filtering a major portion of the fluid; a bypass filtration structure interposed in said internal flow path, said bypass filtration structure filtering a minor portion of the fluid; and wherein said bypass filtration structure includes: a bypass portion through which a first portion of fluid traversing said internal flow passage may pass without appreciable filtration by said bypass portion of the first portion of fluid, and a filtering portion communicating with said bypass portion and through which a second portion of the fluid traversing said internal flow passage may pass, be filtered, and flow into said bypass portion for discharge therefrom, said bypass portion being operative to create a lowered pressure area serving to draw the second fluid portion through said filtering portion, wherein said bypass portion is operative to impart to fluid discharged therefrom a swirling flow pattern.