Pleated filter media with embossed spacers and cross flow

  • US 6,824,581 B1
  • Filed: 05/01/2002
  • Issued: 11/30/2004
  • Est. Priority Date: 05/01/2001
  • Status: Active Grant
First Claim
Patent Images

1. A panel filter element, comprising:

  • a pleated filter media having peaks and valleys and having a clean and a dirty side, the pleated filter media having arrays of embossments projecting from one of the sides, and being arranged with sets of pleats having edges which are closed to form the clean side of the pleated filter media into pockets with openings adjacent to the valleys, and a peripheral seal around the filter media forming a barrier between the clean and dirty sides wherein dirty fluid passes through the filter media and emerges as clean fluid;

    the arrays of embossments being arranged in columns extending between the peaks and valleys in a direction transverse to the peaks and valleys with some of the embossments being elongated and spaced to form gaps that allow fluid to flow between the embossments and wherein some embossments extend continuously from the peaks to the valleys to form channels directing fluid flow in a direction transverse to the peaks and valleys.

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