Patent ID: 9222687
Filing Date: 2015-12-29
Classification: F24F,Y02A

Abstract:
1. An air handling unit for processing an air stream therethrough, comprising: a primary air plenum; a primary air inlet in fluid communication with said primary air plenum and configured to provide a flow of primary air to said primary air plenum; a chamber beneath said primary air plenum, said chamber including discharge channels arranged on opposed sides of said chamber and adjacent to opposed outer edges of said chamber, an irradiate cavity intermediate said opposed discharge channels, and a secondary air inlet beneath said irradiate cavity and configured to accept a flow of secondary air into said irradiate cavity in a generally upwards direction; a plurality of induction nozzles providing a fluid flow pathway between said primary air plenum and said discharge channels, said induction nozzles being configured to direct said primary air from said primary air plenum through said discharge channels and out of discharge ports in said channels in a generally downwards direction opposite a flow of said secondary air into said irradiate cavity; an ultraviolet light bulb positioned in said irradiate cavity adjacent to said secondary air inlet, said ultraviolet light bulb being configured to effectively treat and sterilize substantially only said secondary air; a reflective mirror beneath said ultraviolet light bulb, said reflective mirror being arcuate in shape and being configured to reflect ultraviolet light emitted from said ultraviolet light bulb upward into said irradiate cavity and away from said secondary air inlet and said discharge ports; and a shield disposed within said irradiate cavity above said ultraviolet light bulb and on an opposing side of said irradiate cavity from said ultraviolet light bulb, said shield projecting into said irradiate cavity and having a first angled face and a second angled face joined to said first angled face at an apex, said apex being positioned directly above said ultraviolet light bulb; wherein said shield is being configured to prevent ultraviolet light from exiting said air handling unit and entering an occupied space below said air handling unit.