Waved filter media and elements

Patent metadata

Field	Value
Publication number	US-9718020-B2
Application number	US-201314042210-A
Country	US
Kind code	B2
Filing date	Sep 30, 2013
Priority date	Feb 28, 2007
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications.

First claim

What is claimed is:

1. A filter media, comprising:
a filtration layer comprising a plurality of waves having peaks and troughs in a waved configuration,
the filter media further comprising:
means for holding the filtration layer in the waved configuration;
means for maintaining separation of the peaks and troughs of adjacent waves of the filtration layer;
wherein the filter media has an overall air permeability in the range of 10-300 CFM;
wherein the filtration layer has a DOP filtration efficiency in the range of about 20% to 99%; and
wherein the filter media has a dust holding capacity of at least 8 g/ft 2 at 25 FPM face velocity using ASHRAE dust loading to 1.5 inch H 2 O pressure drop.

2. The filter media of claim 1 , wherein the filter media has an overall thickness in the range of about 1.5 mm to 25 mm and an overall basis weight of between 70-1100 gsm.

3. The filter media of claim 1 , wherein the filter media has a MERV rating in the range of 7 to 16.

4. The filter media of claim 1 , wherein the filter media has an overall pressure drop in the range of about 0.1″ to 1″ inch H2O.

5. The filter media of claim 1 , wherein the filter media has a DOP alpha value in the range of 12-16.

Assignees

• Hollingsworth & Vose Co

Inventors

• Healey David T
• Gahan Richard

Classifications

• B01D46/523

  with means for maintaining spacing between the pleats or folds · CPC title

• B01D39/2017

  the material being filamentary or fibrous · CPC title

• B01D2239/0225

  Side-by-side · CPC title

• B01D39/1623 Primary

  of synthetic origin · CPC title

• B01D39/163

  sintered or bonded · CPC title