Composite high efficiency filter media with improved capacity

A filter medium and medium technology, applied in the field of high-efficiency and high-capacity filter media, can solve the problem of inability to obtain fine particle removal efficiency, pressure drop, etc., and achieve the effects of enhancing pollutant retention capacity, improving separation, and improving hydrophobicity

Inactive Publication Date: 2017-04-19
CLARCOR ENGINE MOBILE SOLUTIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prior art materials based essentially on natural fibers such as cellulose typically cannot achieve such fines removal efficiencies and acceptable pressure drops across the media

Method used

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  • Composite high efficiency filter media with improved capacity
  • Composite high efficiency filter media with improved capacity
  • Composite high efficiency filter media with improved capacity

Examples

Experimental program
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Embodiment Construction

[0036] figure 1 is a cross-sectional view of the composite media 10 of the present disclosure showing (from the upstream face to the downstream face) optional lightweight protective cloth 12 , depth media 14 and base media 16 . Composite media 10 is intended for, but not limited to, the filtration of diesel fuel delivered to fuel injection systems of internal combustion diesel engines for on- and off-road vehicles and generator and marine applications. Fuel flows through the composite media from the upstream face at the optional protective cloth to the downstream face at the outlet side of the base media 16 . Depth media 14 and base media 16 will be discussed in terms of "upstream" and "downstream" sides, which relate to the direction of fuel flow through composite media 10 .

[0037] The composite media of the present disclosure can be used to make filter elements or cartridges for use in combination with fuel delivery systems. Figure 15 An exemplary cartridge 30 is shown....

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Abstract

A composite filter media includes a base sheet incorporating polymer microfibers and nano-fibrillated cellulose in combination with one or more alternative upstream depth filtration layers. Embodiments of the composite filter media employ polymer or fiberglass layers arranged on the upstream face of the base sheet. A lightweight protective spun bond scrim may be applied to the upstream face of the upstream depth filtration material. The depth filtration layer or layers may be laminated to each other and / or the base sheet or co-pleated with the base sheet to form the disclosed composite media. The depth filtration layers are configured to provide a positive density gradient in the direction of fuel flow through the composite media, meaning that the depth filtration media increases in density and decreases in pore size in the direction of fuel flow.

Description

technical field [0001] Embodiments disclosed herein relate generally to high efficiency and high capacity filter media, and filters and methods employing the media to filter liquids, such as diesel fuel. Background technique [0002] Filter media with high filtration efficiency for fine particulates generally require pores in the media that are smaller than the particle size. The media has a "sieve" effect that prevents fine particles from passing through the media. However, small pores in the media often result in low permeability, resulting in high fluid pressure drop across the media. The effectiveness of a filter medium in removing particulate matter of a specified size is referred to as its "efficiency". When particulate matter is physically trapped on the upstream side of the media, it gradually clogs the pores of the media over time, which in turn causes the fluid pressure drop across the media to gradually increase beyond the system's design parameters. Filter med...

Claims

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Application Information

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IPC IPC(8): B01D39/02B01D39/04B01D39/16
CPCB01D39/1623B01D39/18B01D39/2017B01D2239/025B01D2239/065B01D2239/1233B01D39/1615
Inventor F·F·卡尔卡泰拉T·格林厉雷T·吉尔伯特V·巴杰帕伊吴志旺C·A·泰勒
Owner CLARCOR ENGINE MOBILE SOLUTIONS
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