Filter cartridge; components thereof; and methods

Patent metadata

Field	Value
Publication number	US-9751036-B2
Application number	US-201313947833-A
Country	US
Kind code	B2
Filing date	Jul 22, 2013
Priority date	Feb 27, 2009
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

Z-filters capable of cleaning particulate matter from airflow streams in dust collectors, including reverse flow, reverse air, and reverse pulse systems.

First claim

What is claimed is:

1. An air filter cartridge comprising:
(a) a coiled media pack having a first flow face and an opposite second flow face; the media pack including:
(i) a set of inlet flutes open at the first flow face to passage of air to be filtered therein;
(ii) a set of outlet flutes open at the second flow face;
(iii) the media pack being closed to flow of unfiltered air into the first flow face and then outwardly from the second flow face without filtering;

(b) the media pack having first and second rounded ends with first and second straight sides in complete extension therebetween; and
(i) the first rounded end having a greater radius than the second rounded end.

2. An air filter cartridge according to claim 1 further comprising:
(a) a non-circular core; the media pack being wound around the core.

3. An air filter cartridge according to claim 2 wherein:
(a) the core is generally sector-shaped.

4. An air filter cartridge according to claim 1 wherein:
(a) the first flow face is planar.

5. An air filter cartridge according to claim 1 wherein:
(a) the coiled media pack includes fluted sheet secured to a facing sheet.

6. An air filter cartridge according to claim 5 further comprising:
(a) a wedge-shaped core; the media pack being wound around the core.

7. An air filter cartridge according to claim 3 wherein:
(a) the first and second flow faces are planar; and
(b) the coiled media pack includes fluted sheet secured to a facing sheet.

Assignees

• Donaldson Co Inc

Inventors

• Raether Thomas D
• Zauner Brian
• Belcher Mark
• Safarian Gabriel

Classifications

• B01D46/525

  which comprises flutes · CPC title

• B01D2275/206

  Special forms, e.g. adapted to a certain housing · CPC title

• B01D46/528 Primary

  using wound sheets (B01D46/527 takes precedence) · CPC title

• B01D46/0005 Primary

  Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence) · CPC title

• B01D46/002

  Operations & Transport · mapped topic