Dual filter assembly

Details Dual filter assembly Dual filter assembly

B - Operations, Transporting

01

D

183/24

B01D 53/26 (2006.01) B01D 46/46 (2006.01)

Patent

CA 1091167

DUAL FILTER ASSEMBLY Abstract of the Disclosure Assembly for filtering compressed gas having a pair of desiccant type filter units each alternating between filtering and regenerating cycles and one filtering while the other is being regenerated and vice versa for maintaining an uninterrupted supply of filtered gas. The filter units are adjacently or remotely mountable and so valved and controlled as to prevent substantial loss of input compressed gas during shifting of filtering from one unit to the other. Filtered gas outlets of the units are connected to opposite ends of a cylindrical purge reservoir containing intermediate those ends a floating piston for diverting to and storing on one side of the piston for subsequent purging part of the output filtered gas from each unit during the unit's filtering cycle and at the same time applying substantially constant pressure for driving gas on the opposite side of the piston from the purge cylinder's opposite end for reverse flow regeneration of the desiccant in the other unit.

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