US 5,704,955 A · Air filtration system for vented exhaust system

Abstract

An existing exhaust hood having a single coarse particulate filter for filtering contamination laden air is replaced by a filtration module preferably having two filters and optionally a third filter. The two preferred filters are a grease baffle filter and an electrostatic air cleaner (EAC). Optionally, a charcoal filter would be a third filter in a series of three filters for removing odors from exhausted air. The preexisting exhaust fan of the hood would be maintained in use and the preexisting duct work to the exterior of a building would also be maintained for exhausting the now filtered air to the exterior of the building. The filtration module would lower the amount of volatile organic compounds to an acceptable level so as to prevent pollution of the exterior environment of a building.

Claims15

Dependent claims

An air filtration module for removing volatile organic compounds in a vented exhaust system, said air filtration module comprising:

an outer housing, and
an inner housing including channels for removably receiving at least two air filters, said inner housing being pivotably mounted on said outer housing and movable between a closed position where said inner housing is located within said outer housing and an open position where said inner housing is swung away from said outer housing,
said outer housing being electrically connected to a power control module, said power control module including at least one indicator for indicating the presence or absence of at least one air filter in the channels in said inner housing.

Dependencies are inferred from the claim text.

Air filtration system for vented exhaust system

Life of this patent

Air filtration system for vented exhaust system

Life of this patent

Abstract

Claims15