Patent ID: 9468879
Filing Date: 2016-10-18
CPC Classification: B01D

Claim Text:
1. A method for operating a filter system, the method comprising: providing a filter system, wherein the filter system comprises: a plurality of filters including a first filter and a second filter, the first and second filters being spaced from one another; a collector unit provided below the plurality of filters; a first injector disposed adjacent to the first filter and a second injector disposed adjacent to the second filter; the method further comprising: a filtering step wherein the plurality of filters extract particulates from contaminated air as the contaminated air moves through the plurality of filters in a filtering direction, and a cleaning step wherein at least the first and second filters are cleaned, the cleaning step comprises: a first time duration wherein the first injector is activated to supply a first pressurized air pulse to the first filter in a direction opposite than the filtering direction to discharge a plurality of particulates from the first filter, the second injector is deactivated during the first time duration such that pressurized air does not enter the second filter through the second injector, a second time duration after the first time duration wherein the first injector is deactivated such that discharged particulates from the first filter are suspended while airborne in the space between the first and second filters, and a third time duration after the second time duration wherein the first and second injectors are simultaneously activated to supply pressurized air pulses to the first and second filters in a direction opposite to the filtering direction while the particulates are suspended and airborne in the space between the first and second filters, such that the pressurized air pulses force at least a portion of the discharged particulate away from the first and second filters thereby directing the discharged particulate towards the collector unit.