Filter cartridge; components thereof; and methods
Z-filters capable of cleaning particulate matter from airflow streams in dust collectors, including reverse flow, reverse air, and reverse pulse systems.
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.