Filtration arrangement utilizing pleated construction and method
First Claim
Patent Images
1. A filter element comprising:
- (a) a media pack comprising;
(i) a construction of a media composite;
said construction including a substrate having a plurality of pleats having a length extending from said first end to said second end, the substrate comprising a filter medium having an efficiency when tested with particles having a diameter of 0.01 to 1 μ
m;
(ii) said construction having a tubular shape and defining an open interior having a first and a second opposite ends; and
(iii) said substrate at least partially covered by a single layer, said layer comprising a polymeric fine fiber comprising a fiber with a diameter of about 0.01 to 0.5 microns such that after test exposure for a test period of 16 hours to test conditions of 140°
F. air and a relative humidity of 100% retains greater than 30% of the fiber unchanged for filtration purposes, the fine fiber comprising a crosslinked polyvinylalcohol;
(b) a first end cap and a second end cap;
(i) said media pack being secured to said first end cap at said first end of said media pack;
(ii) said media pack being secured to said second end cap at said second end of said media pack;
(iii) at least one of said first and second end caps including a sealing portion;
said sealing portion comprising a material compressible in a direction toward said media pack.
0 Assignments
0 Petitions
Accused Products
Abstract
Filter arrangements include a barrier media, usually pleated, treated with a deposit of fine fibers. The media is particularly advantageous at high temperature (greater than 140° F.) systems. Such systems may include engine systems and fluid compressor systems. Filter arrangements may take the form of tubular, radially sealing elements; tubular, axial sealing elements; forward flow air cleaners; reverse flow air cleaners; and panel filters.
-
Citations
15 Claims
-
1. A filter element comprising:
-
(a) a media pack comprising;
(i) a construction of a media composite;
said construction including a substrate having a plurality of pleats having a length extending from said first end to said second end, the substrate comprising a filter medium having an efficiency when tested with particles having a diameter of 0.01 to 1 μ
m;
(ii) said construction having a tubular shape and defining an open interior having a first and a second opposite ends; and
(iii) said substrate at least partially covered by a single layer, said layer comprising a polymeric fine fiber comprising a fiber with a diameter of about 0.01 to 0.5 microns such that after test exposure for a test period of 16 hours to test conditions of 140°
F. air and a relative humidity of 100% retains greater than 30% of the fiber unchanged for filtration purposes, the fine fiber comprising a crosslinked polyvinylalcohol;
(b) a first end cap and a second end cap;
(i) said media pack being secured to said first end cap at said first end of said media pack;
(ii) said media pack being secured to said second end cap at said second end of said media pack;
(iii) at least one of said first and second end caps including a sealing portion;
said sealing portion comprising a material compressible in a direction toward said media pack. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
Specification