High surface area filter cartridge
AssigneeMinnesota Mining and Manufacturing Company
InventorYuan-Ming Tang
Life of this patent
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Abstract
New, high surface area per unit volume, generally cylindrical filter cartridge for gaseous or liquid filter applications are described. These filter cartridges which comprise a nested arrangement of substantially disk shaped layers having a radial pleat pattern embossed therein, are capable of achieving higher surface areas per unit volume than can be achieved with conventionally pleated filter cartridges. Utilization of the filter media is extremely high as blocking of adjacent layers of filter media is avoided and fluids are evenly distributed over the total area of the filter media as a result of the series of channels created by the nesting of the disk shaped pleated layers.
Claims21
A generally tubular filter cartridge for separating constituent components of a fluid mixture, said cartridge comprising a sheet that includes at least one layer of filter media arrayed in a nested arrangement of substantially disk-shaped filter members, each filter member comprising first and second annular sections of said sheet connected together at their outer circumference and having a pattern of radial pleats thereon which nest with the radial pleats on an adjoining section.
A generally tubular filter cartridge for separating constituent components of a fluid mixture, said cartridge comprising a porous tubular sheet that includes at least one filter medium layer longitudinally collapsed to form disk-shaped filter members that each comprise connected first and second annular sections of said sheet, said sections having a pattern of radial pleats thereon which nest with the radial pleats of adjoining sections, the annular sections leaving a central cylindrical opening disposed along the longitudinal axis of the cartridge, whereby fluid to be filtered passes through the sheet into or from the central cylindrical opening.
Dependencies are inferred from the claim text.