Multi-panel fluid filter with equalized contaminant passages

US6482247B2 · kind B2 · utility

Assignee

• NELSON industrial inc. · US

Inventors

• Tadeusz Jaroszczyk · Stoughton, US
• Kent J. Kallsen · Jefferson, US
• Jason E. Dorgan · Madison, US
• Jeffrey S. Morgan · Stoughton, US
• Stephen L. Fallon · Oregon, US
• James A. Debilzen · Oregon, US
• Larry T. Gunderson · Madison, US
• Brad Henke · Madison, US

Key dates

• Filing date: Dec 18, 2000
• Grant date: Nov 19, 2002
• Expiry date: Dec 18, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2275/201
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A filter (200) filters fluid flowing along an axial flow direction (14) and includes a plurality of panels (206, 208, 240, 242) of pleated filter elements (44), each filter element having a plurality of pleats defined by wall segments (50) extending along a transverse direction (210) between first and second sets of pleat tips at first and second sets of axially extending bend lines (46, 48), the transverse direction (210) being perpendicular to the axial direction (14). Each of the panels (206, 208, 240, 242) extends along a lateral direction (212) perpendicular to the axial direction (14) and perpendicular to the transverse direction (210). The wall segments (50) extend axially between upstream and downstream ends (52, 54), and define axial flow channels (55) therebetween which are alternately sealed at the upstream and downstream ends. Transverse gaps (214, 236, 238, 244, 246, 248) are provided between panels and the housing at upstream and downstream ends (52, 54), providing additional fluid flow axially therethrough and equalized contaminant passages.