US 11,939,719 B2
Laundry drying machine and controlling method of laundry drying machine
Jihoon Kim, Seoul (KR); Junghoon Lee, Seoul (KR); Chanwoo Moon, Seoul (KR); and Youngmin Kim, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Sep. 7, 2021, as Appl. No. 17/468,203.
Claims priority of application No. 10-2020-0113622 (KR), filed on Sep. 7, 2020; application No. 10-2020-0113623 (KR), filed on Sep. 7, 2020; and application No. 10-2020-0113624 (KR), filed on Sep. 7, 2020.
Prior Publication US 2022/0074121 A1, Mar. 10, 2022
Int. Cl. D06F 58/38 (2020.01); D06F 34/10 (2020.01); D06F 58/08 (2006.01); D06F 58/26 (2006.01); D06F 58/46 (2020.01); D06F 58/48 (2020.01); H05B 6/54 (2006.01); H05B 6/62 (2006.01); D06F 103/04 (2020.01); D06F 103/64 (2020.01); D06F 105/48 (2020.01)
CPC D06F 58/38 (2020.02) [D06F 34/10 (2020.02); D06F 58/08 (2013.01); D06F 58/26 (2013.01); D06F 58/46 (2020.02); D06F 58/48 (2020.02); H05B 6/54 (2013.01); H05B 6/62 (2013.01); D06F 2103/04 (2020.02); D06F 2103/64 (2020.02); D06F 2105/48 (2020.02)] 20 Claims
OG exemplary drawing
 
1. A laundry drying machine comprising:
a cabinet;
a drum that is rotatably disposed in the cabinet and that is configured to accommodate a target object;
an electric field generator that is spaced apart from the drum and that is configured to, based on power being applied to the electric field generator, generate an electric field inside the drum; and
an exhaust duct configured to discharge air inside the drum,
wherein the electric field generator includes:
an anode electrode that is spaced apart from the drum, that is fixed to the cabinet, and that is configured to apply the electric field to the target object accommodated in the drum,
a power supply unit that is configured to supply the power to the anode electrode, and
a matcher that is provided in the cabinet and that is configured to match a source impedance of the power and an impedance of a load side, and
wherein the drum is configured to, based on a reflectivity of the electric field exceeding a predetermined ratio, reduce a rotation speed.