US 2009/0288941 A1 · PHOTOCATALYTIC AIR PURIFIER FOR A FAN COIL UNIT

Abstract

A photocatalytic air purifier is disclosed. The photocatalytic purifier includes filter structures coated with a catalytic material such as titanium dioxide. One or more UV lamps are interposed between the filter structures. The catalytic layer reacts with airborne VOCs and bioaerosols when activated by the UV lamps to thereby oxidize the VOCs and destroy the bioaerosols. The photocatalytic air purifier does not need to be replaced or regenerated after a period of continuous usage. The photocatalytic purifier of the present invention substantially eliminates odors, VOCs, and bioaerosols from air directed through the fan coil. The photocatalytic air purifier includes a control system that optimizes operating costs. Because of these features, service, maintenance, and filter replacement are reduced to a minimum. At the same time, the well being of persons living in the space conditioned by the photocatalytic air purifier is improved.

Claims18

Dependent claims

A method for filtering air in a unit having an air return, and an air supply, the method comprising:

providing at least one modular photocatalytic purifier, the at least one photocatalytic purifier including a modular enclosure having a retractable alignment mechanism, and at least one UV lamp interposed between a plurality of titanium dioxide coated filter structures;
using the retractable alignment mechanism to dispose the at least one modular photocatalytic purifier in an in-use position within the unit;
directing air from the air return into the at least one photocatalytic purifier;
bringing contaminants borne by the air into contact with the titanium dioxide coated filter structures;
and
directing UV radiation from the at least one UV lamp onto the titanium dioxide coated filter structures, whereby the titanium dioxide coated filter structures are activated to react with the contaminants to produce carbon dioxide and water.

3 more elements

Dependencies are inferred from the claim text.

Photocatalytic air purifier for a fan coil unit

Life of this patent

Photocatalytic air purifier for a fan coil unit

Life of this patent

Abstract

Claims18