Air treatment system

Abstract

An apparatus for treating air includes a housing with an air inlet and an air outlet, the housing enclosing an air treatment zone and an ozone removal zone, wherein the ozone removal zone is positioned downstream of the air treatment zone with respect to a flow direction of the air being treated, an ozone generator in the air treatment zone configured to generate ozone from the air, wherein the ozone generated by the ozone generator treats the air in the air treatment zone, catalyst in the ozone removal zone that removes at least a portion of the ozone generated the ozone generator, a particle matter (PM) filter positioned between the air treatment zone and the ozone removal zone, wherein the ozone generated by the ozone generator treats the PM filter, and an air mover positioned near the air outlet configured to draw the air through the air inlet.

1 - 29 . (canceled) 
     
     
         30 . An air treatment apparatus, comprising:
 a housing having an air inlet and an air outlet;   a particle matter filter in the housing having an inner space containing an air treatment zone downstream of the air inlet;   an ultraviolet light arranged to emit ultraviolet light in the air treatment zone;   a catalyst in an oxidizing zone in the housing, the catalyst configured to oxidize contaminants in air in the oxidizing zone and being physically separate from the particle matter filter; and   an air mover in the housing and configured to cause air to move into the housing via the air inlet, to move air from the air inlet to the air treatment zone, to move air from the air treatment zone radially outwardly through the particle matter filter, and to move air from the particle matter filter to the oxidizing zone.   
     
     
         31 . The apparatus of  claim 30 , wherein the catalyst is configured to remove ozone from air. 
     
     
         32 . The apparatus of  claim 30 , wherein the particle matter filter has a tubular shape. 
     
     
         33 . The apparatus of  claim 32 , wherein the ultraviolet light is arranged at a location inside of the tubular shape of the particle matter filter. 
     
     
         34 . The apparatus of  claim 33 , wherein the ultraviolet light is centered within the tubular shape of the particle matter filter. 
     
     
         35 . The apparatus of  claim 30 , wherein the catalyst and the oxidizing zone are configured to treat air flowing axially through the oxidizing zone. 
     
     
         36 . The apparatus of  claim 30 , wherein the housing has a tubular shape and surrounds the particle matter filter. 
     
     
         37 . The apparatus of  claim 30 , wherein the housing and particle matter filter are configured so that air flowing from the particle matter filter to the oxidizing zone flows between an inner surface of the housing and an outer surface of the particle matter filter. 
     
     
         38 . The apparatus of  claim 30 , wherein the housing includes a light baffle that includes or forms the air inlet. 
     
     
         39 . The apparatus of  claim 30 , wherein the air mover is arranged downstream of the oxidizing zone. 
     
     
         40 . The apparatus of  claim 30 , wherein the air inlet extends about a base of the ultraviolet light. 
     
     
         41 . The apparatus of  claim 30 , wherein the catalyst is formed in layers and has a gap between adjacent layers of the catalyst. 
     
     
         42 . The apparatus of  claim 30 , wherein the ultraviolet light is configured to generate ozone within the air treatment zone. 
     
     
         43 . The apparatus of  claim 30 , wherein the ultraviolet light is configured to emit ultraviolet light to oxidize and deodorize organic materials on a surface of the particle matter filter. 
     
     
         44 . The apparatus of  claim 30 , further comprising an ozone generator configured to generate ozone in the air treatment zone. 
     
     
         45 . The apparatus of  claim 44 , further comprising a controller configured to operate the air mover, the ozone generator and the ultraviolet light source in a regular operating mode and a self-cleaning operating mode, wherein operating the air mover, ozone generator and ultraviolet light source in the regular operating mode includes generating ozone at a first concentration and employing a first air flow rate, and wherein operating the air mover, ozone generator and ultraviolet light source in the self-cleaning operating mode includes generating ozone at a second concentration that is higher than the first concentration and employing a second air flow rate that is lower than the first air flow rate. 
     
     
         46 . The apparatus of  claim 33 , wherein the self-cleaning operating mode includes maintaining a space velocity flow through the catalyst at less than 100,000/hr. 
     
     
         47 . The apparatus of  claim 30 , wherein the housing and particle matter filter are arranged such that air flows axially within the housing from the particle matter filter to the oxidizing zone and/or a housing outlet. 
     
     
         48 . The apparatus of  claim 30 , wherein the ultraviolet light is configured to emit a germicidal light wavelength and an ozone generation light wavelength. 
     
     
         49 . The apparatus of  claim 30 , wherein a second catalyst is positioned around the particle matter filter, the second catalyst being configured to oxidize contaminants and/or remove ozone from air passing through the particle matter filter. 
     
     
         50 . The apparatus of  claim 49 , wherein the particle matter filter has pleats and the second catalyst is positioned between pleats of the particle matter filter. 
     
     
         51 . An air treatment apparatus, comprising:
 a housing having an air inlet and an air outlet;   a particle matter filter in the housing having an inner space containing an air treatment zone downstream of the air inlet;   an ultraviolet light arranged to emit ultraviolet light in the air treatment zone;   a catalyst positioned around the particle matter filter, the catalyst configured to oxidize contaminants in air in the oxidizing zone; and   an air mover in the housing and configured to cause air to move into the housing via the air inlet, to move air from the air inlet to the air treatment zone, to move air from the air treatment zone radially outwardly through the particle matter filter, and to move air from the particle matter filter to the catalyst.   
     
     
         52 . The apparatus of  claim 51 , further comprising a second catalyst in an oxidizing zone in the housing, the second catalyst configured to oxidize contaminants and/or remove ozone in air in the oxidizing zone and being physically separate from the particle matter filter. 
     
     
         53 . The apparatus of  claim 51 , wherein the second catalyst and the oxidizing zone are configured to treat air flowing axially through the oxidizing zone. 
     
     
         54 . The apparatus of  claim 51 , wherein the second catalyst is formed in layers and has a gap between adjacent layers of the second catalyst. 
     
     
         55 . The apparatus of  claim 51 , wherein the ultraviolet light is configured to generate ozone within the air treatment zone. 
     
     
         56 . The apparatus of  claim 51 , wherein the ultraviolet light is configured to emit ultraviolet light to oxidize and deodorize organic materials on a surface of the particle matter filter.