US 11,786,628 B2
Air purifier
Tomoharu Usa, Osaka (JP); and Katsuhiro Yamaguchi, Osaka (JP)
Assigned to Sunstar Engineering Inc., Osaka (JP)
Filed by Sunstar Engineering Inc., Osaka (JP)
Filed on Sep. 22, 2021, as Appl. No. 17/481,976.
Claims priority of application No. 2020-158702 (JP), filed on Sep. 23, 2020.
Prior Publication US 2022/0088262 A1, Mar. 24, 2022
Int. Cl. A61L 9/20 (2006.01); B01J 35/00 (2006.01); B01J 21/06 (2006.01)
CPC A61L 9/205 (2013.01) [B01J 21/063 (2013.01); B01J 35/004 (2013.01); A61L 2209/11 (2013.01); A61L 2209/12 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An air purifier comprising:
an air passage defined between a first inner wall surface and a second inner wall surface that are planar and face each other, having a flat passage cross section in which the first inner wall surface and the second inner wall surface are separated from one another in a thickness direction, and meandering in a plane parallel to the first inner wall surface and the second inner wall surface, the meandering comprising a portion of the air passage curving about an axis extending in the thickness direction;
a catalyst member including a support having a flat mesh shape, and a photocatalyst supported on the support, the catalyst member being disposed parallel to the first inner wall surface and the second inner wall surface in the air passage; and
a plurality of light sources dispersed on the second inner wall surface, and configured to irradiate the catalyst member with light that activates the photocatalyst.