Air purification system

Abstract

This invention relates to an air purification apparatuses and methods for air purification. The air purification apparatuses pass air through energy beams that form one or more fields of energy within a chamber to produce an outflow of sterilized air. In some aspects, a charge generation system is implemented to repel particles from the chamber walls. In some aspects, the fields of energy extend across substantially an entirety of the cross sectional area of the interior volume of the chamber and longitudinally within the chamber. In some aspects, a controller is configured to rotate a beam of collimated light energy within the chamber at a rotational velocity corresponding to at least V/W, wherein V is the linear velocity of a particle within the chamber along the longitudinal axis, and W is the width of the beam of collimated light energy.

1 . An air purification apparatus, comprising:
 a chamber comprising one or more walls forming an interior volume, wherein at least one of the walls comprises a reflective surface facing inwardly towards the interior volume;   a collimated light source configured to direct a beam of collimated light energy into the chamber; and   a charge generation system configured to impart a charge to the one or more walls, to repel particles contained within the interior volume from the one or more walls.   
     
     
         2 . The air purification apparatus of  claim 1 , wherein the charge generation system is configured to impart a similar charge on the particles within the interior volume. 
     
     
         3 . The air purification apparatus of  claim 1 , wherein the charge generation system is configured to impart a negative charge. 
     
     
         4 - 10 . (canceled) 
     
     
         11 . An air purification apparatus comprising:
 a chamber comprising one or more sidewalls forming an inner cross-sectional area extended longitudinally along a longitudinal axis to form an interior volume, each sidewall comprising an inwardly-facing reflective surface;   a collimated light source configured to direct a beam of collimated light into the chamber; and   a beam redirector disposed within the interior volume and configured to rotate through a complete revolution about a rotational axis such that the beam of collimated light energy is redirected to form a field of collimated light energy extending across substantially an entirety of the cross sectional area of the interior volume and extending longitudinally along the longitudinal axis.   
     
     
         12 . The air purification apparatus of  claim 11 , wherein the chamber comprises a first end and a second end configured to allow air to flow through the chamber through the interior volume from the first end to the second end along the longitudinal axis. 
     
     
         13 . The air purification apparatus of  claim 11 , wherein the collimated light source is a laser. 
     
     
         14 . The air purification apparatus of  claim 11 , wherein the chamber is cylindrical. 
     
     
         15 . The air purification apparatus of  claim 14 , wherein the beam redirector is disposed within an elbow of the chamber. 
     
     
         16 . The air purification apparatus of  claim 11 , wherein the beam redirector comprises an optic element with a surface comprising a reflective material. 
     
     
         17 . The air purification apparatus of  claim 11 , wherein the beam redirector comprises an optic element with a refractive lens. 
     
     
         18 . The air purification apparatus of  claim 11 , wherein the field of collimated light energy has a substantially frustroconical shape. 
     
     
         19 . The air purification apparatus of  claim 11 , wherein a portion of the reflective surface is oriented to be substantially non-parallel with the longitudinal axis. 
     
     
         20 . The air purification apparatus of  claim 19 , wherein the reflective surface comprises one or more reflective grooves. 
     
     
         21 . The air purification apparatus of  claim 11 , wherein the field of collimated light energy is reflected by the inwardly-facing reflective surface to form one or more reflected energy fields extending longitudinally along the longitudinal axis. 
     
     
         22 . The air purification apparatus of  claim 11 , further comprising an energy abatement device positioned within the chamber and configured to absorb the energy of the field of collimated light energy. 
     
     
         23 . The air purification apparatus of  claim 11 , further comprising a controller configured to rotate the beam redirector about the rotational axis at a rotational velocity corresponding to V/W, wherein V is the linear velocity of a particle within the chamber along the longitudinal axis, and W is the width of the beam of collimated light energy. 
     
     
         24 . An air purification apparatus comprising:
 a chamber comprising:
 one or more sidewalls forming an interior volume, the one or more sidewalls comprising one or more surfaces facing inwardly towards the interior volume; and 
 a first opening and a second opening configured to allow air to flow through the interior volume from the first opening to the second opening along a longitudinal axis; 
   a collimated light source configured to direct a beam of collimated light energy into the interior volume of the chamber;   a beam redirector disposed within the interior volume and configured to rotate through a complete revolution about a rotational axis such that the beam of collimated light energy is redirected to form a field of collimated light energy extending across substantially an entirety of a cross sectional area of the interior volume during said revolution; and   a controller configured to rotate the beam redirector about the rotational axis at a rotational velocity corresponding to at least V/W, wherein V is the linear velocity of a particle within the chamber along the longitudinal axis, and W is the width of the beam of collimated light energy.   
     
     
         25 . The air purification apparatus of  claim 24 , wherein the field of collimated light energy comprises a plurality of coplanar reflected beams. 
     
     
         26 . The air purification apparatus of  claim 24 , wherein the field of collimated light energy extends longitudinally along the longitudinal axis. 
     
     
         27 . The air purification apparatus of  claim 24 , wherein the collimated light source is a laser. 
     
     
         28 - 32 . (canceled)