Filter apparatus with pulse cleaning and methods for pulse cleaning filters

An air cleaner comprising:

• (a) a housing including a dirty air inlet, a clean air outlet, and an interior;
• (b) a planer tubesheet in the housing interior having a plurality of openings in the same plane as the tubesheet;
• (c) a plurality of panel-style z-media filters, each filter being mounted in a respective one of the openings in the tubesheet and having a flow face generally parallel to the plane of the tubesheet;
• each of the filters being mounted in the respective one of the openings to permit air to flow through the flow faces in a straight flow through direction;
• and
• (d) a plurality of blowpipes;
• each blowpipe being oriented to direct a fluid pulse at a respective one of the filters at an angle that is:
• (i) not normal to the plane of the openings in the tubesheet;
• and
• (ii) not in line with the direction of filtration flow through the respective filters.

A method of pulse cleaning filter media in a z-media panel style filter oriented in a an opening of a planer tubesheet with more than one blow pipe, the opening being in the same plane as the tubesheet;

• the method comprising:
• (a) providing the z-media panel style filter having a flow face that is generally parallel to the plane of the tubesheet and being mounted in the opening to permit air to flow through the flow face in a straight flow through direction;
• and
• (b) directing a fluid pulse at the filter media that exhausts from more than one blow pipe.