US 12,421,651 B2
Dryer and method of controlling the same
Junhoe Choi, Suwon-si (KR); Hoyoung Kim, Suwon-si (KR); Doyoon Kim, Suwon-si (KR); Taegyoon Noh, Suwon-si (KR); Hyejoon Seok, Suwon-si (KR); and Jeongsu Han, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Mar. 28, 2022, as Appl. No. 17/706,505.
Application 17/706,505 is a continuation of application No. PCT/KR2020/095091, filed on Jul. 27, 2020.
Claims priority of application No. 10-2019-0119363 (KR), filed on Sep. 27, 2019.
Prior Publication US 2022/0220661 A1, Jul. 14, 2022
Int. Cl. D06F 58/38 (2020.01); D06F 58/46 (2020.01); D06F 103/08 (2020.01); D06F 103/24 (2020.01); D06F 103/32 (2020.01); D06F 105/62 (2020.01)
CPC D06F 58/38 (2020.02) [D06F 58/46 (2020.02); D06F 2103/08 (2020.02); D06F 2103/24 (2020.02); D06F 2103/32 (2020.02); D06F 2105/62 (2020.02)] 10 Claims
OG exemplary drawing
 
1. A dryer, comprising:
a drum;
a heat pump;
a duct configured to:
accommodate an evaporator and a condenser of the heat pump,
heat air flowing in from the drum, and
discharge the air to the drum;
a first temperature sensor configured to measure a temperature of the air discharged to the drum;
a second temperature sensor configured to measure a temperature of the air flowing in the duct from the drum; and
a controller configured to determine that drying is complete based on maintaining a difference value between the temperature of the air discharged and the temperature of the air flowing in below a preset value,
wherein the controller is further configured to determine that the difference value is maintained below the preset value based on determining that the difference value is less than the preset value and a number of times, which an amount of change with time is less than a preset amount, is greater than or equal to a preset number of times, and
wherein, when determining the difference value, the controller is further configured to determine an amount of change with time of the difference value as an amount of change between the difference value and a minimum value among previously determined difference values.