Dual Media air filter with electrostatic charge

Details Dual Media air filter with electrostatic charge Dual Media air filter with electrostatic charge

1996-12-12

1999-02-16

Chiesa, Richard L.

Gas separation: apparatus

Electric field separation apparatus

And serially arranged nonelectrical separator

553853, 55487, 55521, B03C 3011

Patent

active

058715673

ABSTRACT:
A filter element useful for filtering intake air for internal combustion engines includes a first filter media separated by an air space from a second filter media. The second filter media has a greater air permeability than the first filter media, but is electrostatically charged. As a result of this arrangement, the capacity of the filter element is enhanced because large particles are trapped by the first filter media and smaller particles are trapped by the second filter media. As a result, the filter element has a longer life because, for a given contaminant condition of an air stream, unacceptable clogging of the filter element takes longer.

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patent: 5525136 (1996-06-01), Rosen
patent: 5540756 (1996-07-01), Hoppitt et al.

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