Periodic radial symmetry for filter pleating

Abstract

A cylindrical filter element having a central longitudinal axis and filter media including a plurality of radially extending pleats arranged in a pattern that repeats around the central longitudinal axis. Each of the pleats comprises an inner pleat tip, wherein the inner pleat tips of each pattern define an open area that extends along a height of the filter element, and wherein each pattern of pleats comprises a first series of intermediate pleats that descends in length from a major pleat to a minor pleat and a second series of intermediate pleats that ascends in length from the minor pleatto a major pleat of an adjacent pattern of pleats.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit to U.S. Provisional Patent Application No. 62 / 598,692, filed December 14, 2017, the entire contents of which are hereby incorporated by reference in their entirety. technical field [0003] The present invention relates to filters, and more particularly to pleated filter elements arranged in a cylindrical configuration for filter assemblies. Background technique [0004] Fluid filters are commonly used to remove contaminants from liquids or gases to prevent damage to downstream components such as engines. Filtration systems are generally configured such that incoming contaminated fluid travels along a flow path until it encounters the filter material. As the fluid passes through the filter material, a sufficient amount of contaminants will be captured by the filter material such that the fluid exiting the filter is considered clean enough for the resulting fluid's particul...

AI Technical Summary

Problems solved by technology

One challenge with this arrangement is that the shorter pleats tend to migrate towards the central core area, or otherwise move away from the configuration in which the filter was originally manufactured

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