US 8,127,935 B2Granted

Filter module and process for manufacture of same

AssigneePall Corporation

InventorsWolfgang Diemer, Martin Zeiler

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Abstract

A filter module comprises a body of wound layers of sheet material, the body having inner and outer peripheral surfaces, a winding axis and a passage extending along the axis and in fluid communication with the inner peripheral surface, the sheet material having openings forming two channel types extending from the inner to the outer peripheral surfaces, a first channel type open at the outer peripheral surface and closed adjacent to the inner peripheral surface, a second channel type open at the inner peripheral surface, in fluid communication with the passage and closed adjacent to the outer peripheral surface, the two channel types separated from each other by sheet material, one channel types being inlet channels communicating with a fluid inlet, the other channel types being outlet channels communicating with a fluid outlet, wherein the surface of at least one channel type supports a precoat.

Claims46

Dependent claims

A filter module comprising a body of wound layers of a sheet material, said body having an inner peripheral surface and an outer peripheral surface, a winding axis and a passage extending along the winding axis of said body and in fluid communication with said inner peripheral surface,

said sheet material having a plurality of openings formed therein, said openings forming two types of channels within the wound layers of sheet material of said body,
said channels extending in a direction from the inner peripheral surface to the outer peripheral surface,
a first type of channels being open at one end at said outer peripheral surface of the body and closed at the other end located adjacent to said inner peripheral surface,
a second type of channels being open at one end at said inner peripheral surface of the body, in fluid communication with said passage and closed at the other end located adjacent to said outer peripheral surface,
said channels of the one type being separated from the channels of the other type by portions of sheet material,
one of said types of channels being inlet channels communicating with a fluid inlet of said filter module, the other of said types of channels being outlet channels communicating with a fluid outlet of said filter module, the inlet channels having a surface area greater than the surface area of the outlet channels and,
a precoat, wherein the surface of at least one type of the channels supports the precoat.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/053,715Filed 22 Mar 2011 · continuation
Priority: 28 Jul 2005
Published: US 2011/0186505 A14 Aug 2011
Granted: 6 Mar 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

B01D 29/216
With corrugated, folded or wound sheets: with wound sheets
B01D 29/237
With corrugated, folded or wound sheets: with wound sheets
B01D
Separation

Family

Application60/702,978Us provisional application · filed 28 Jul 2005
PCT/EP2006/007367Parent of this continuation · filed 26 Jul 2006
US 2011/0186505 A1Pre-grant publication · published 4 Aug 2011
Application11/995,207Parent of this continuation
US 7,934,604 B2Parent of this continuation
US 2008/0230470 A1Published application
US 8,127,935 B2This patent

From the US filing history. Foreign family members aren’t listed.