US 12,264,834 B2
Air conditioner
Hayato Nuno, Osaka (JP); and Hiroshi Itou, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Mar. 28, 2022, as Appl. No. 17/706,014.
Application 17/706,014 is a continuation of application No. PCT/JP2020/034321, filed on Sep. 10, 2020.
Claims priority of application No. 2019-180008 (JP), filed on Sep. 30, 2019.
Prior Publication US 2022/0214069 A1, Jul. 7, 2022
Int. Cl. F24F 11/64 (2018.01); A61L 2/10 (2006.01); C02F 1/32 (2023.01); F24F 13/22 (2006.01); F24F 110/10 (2018.01); F24F 110/12 (2018.01); F24F 140/20 (2018.01); F24F 140/30 (2018.01)
CPC F24F 11/64 (2018.01) [A61L 2/10 (2013.01); C02F 1/325 (2013.01); F24F 13/22 (2013.01); A61L 2202/11 (2013.01); A61L 2202/14 (2013.01); C02F 2201/326 (2013.01); C02F 2209/02 (2013.01); C02F 2209/42 (2013.01); C02F 2209/44 (2013.01); C02F 2303/04 (2013.01); F24F 2013/228 (2013.01); F24F 2110/10 (2018.01); F24F 2110/12 (2018.01); F24F 2140/20 (2018.01); F24F 2140/30 (2018.01)] 15 Claims
OG exemplary drawing
 
2. An air conditioner comprising:
a heat exchanger provided in an indoor unit of the air conditioner;
a drain pan configured to receive drain water generated in the heat exchanger;
an irradiation unit configured to irradiate the drain pan with ultraviolet rays;
a controller configured to control ultraviolet intensity of the ultraviolet rays from the irradiation unit; and
a temperature sensor configured to detect a temperature of the heat exchanger,
wherein
the controller controls the irradiation unit to make the ultraviolet intensity after a cooling operation larger than the ultraviolet intensity during the cooling operation,
the irradiation unit comprises a light emitter, and
the controller controls the irradiation unit to irradiate the drain pan with the ultraviolet rays when an accumulated time during which the temperature of the heat exchanger detected by the temperature sensor is equal to or higher than a dew-point temperature becomes equal to or longer than a predetermined time during the cooling operation.