US 12,296,059 B2
Ultraviolet light fluid treatment device
Masahiro Imai, Chino (JP)
Assigned to Nichia Corporation, Anan (JP)
Filed by NICHIA CORPORATION, Anan (JP)
Filed on Jun. 24, 2022, as Appl. No. 17/849,070.
Claims priority of application No. 2021-113659 (JP), filed on Jul. 8, 2021; application No. 2021-152304 (JP), filed on Sep. 17, 2021; and application No. 2021-201186 (JP), filed on Dec. 10, 2021.
Prior Publication US 2023/0011539 A1, Jan. 12, 2023
Int. Cl. A61L 2/10 (2006.01); A61L 2/26 (2006.01); C02F 1/32 (2023.01)
CPC A61L 2/10 (2013.01) [A61L 2/26 (2013.01); C02F 1/325 (2013.01); A61L 2202/11 (2013.01); C02F 2201/3227 (2013.01); C02F 2303/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An ultraviolet light fluid treatment device comprising:
an inlet;
an outlet;
a primary conduit connecting the inlet and the outlet;
a secondary conduit branching off the primary conduit at a first location of the primary conduit and merging with the primary conduit at a second location of the primary conduit; and
a light source disposed between the primary conduit and the secondary conduit and configured to emit ultraviolet light, with which a region in the primary conduit is irradiated,
a cross-sectional area in the primary conduit orthogonal to a first flow direction of a fluid in the primary conduit at the first location being greater than a cross-sectional area in the secondary conduit orthogonal to a second flow direction of the fluid in the secondary conduit at the first location.