US 12,270,139 B2
Laundry treating apparatus and method for controlling the same
Sunho Lee, Seoul (KR); Youngjong Kim, Seoul (KR); and Dongcheol Kim, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Aug. 3, 2021, as Appl. No. 17/392,883.
Claims priority of application No. 10-2020-0102617 (KR), filed on Aug. 14, 2020.
Prior Publication US 2022/0049395 A1, Feb. 17, 2022
Int. Cl. D06F 33/36 (2020.01); D06F 33/34 (2020.01); D06F 34/18 (2020.01); D06F 39/08 (2006.01); D06F 103/04 (2020.01); D06F 103/06 (2020.01); D06F 105/02 (2020.01); D06F 105/48 (2020.01); D06F 105/52 (2020.01)
CPC D06F 33/36 (2020.02) [D06F 33/34 (2020.02); D06F 34/18 (2020.02); D06F 39/087 (2013.01); D06F 2103/04 (2020.02); D06F 2103/06 (2020.02); D06F 2105/02 (2020.02); D06F 2105/48 (2020.02); D06F 2105/52 (2020.02)] 13 Claims
OG exemplary drawing
 
1. A method for controlling a laundry treating apparatus including a tub, a drum that is rotatably disposed inside the tub, a rotator that is rotatably disposed at a bottom surface of the drum and includes a pillar extending inside the drum and a plurality of blades spaced apart from one another along a circumferential direction of the pillar and inclined with respect to a longitudinal direction of the pillar, a motor configured to drive the drum and the rotator, and a controller configured to control operation of the motor, the method comprising:
sensing a first amount of a washing load that is put into the drum, the washing load including clothes;
supplying water into the tub based on sensing the first amount of the washing load;
sensing a second amount of the washing load based on a moisture content absorbed by the clothes after supplying the water into the tub; and
sensing a cloth material of the clothes,
wherein sensing the cloth material of the clothes comprises:
determining whether the motor is in a constrained state in an attempt to rotate the rotator after supplying the water into the tub, wherein the method further comprises performing a first washing process according to the second amount of the washing load based on determining that the motor is not in the constrained state in the attempt to rotate the rotator,
based on determining that the motor is in the constrained state in the attempt to rotate the rotator, supplying additional water to the tub, and
determining whether the motor is in the constrained state in another attempt to rotate the rotator after supplying the additional water,
wherein the method further comprises:
based on determining that the motor is no longer in the constrained state in the another attempt to rotate the rotator with the additional water, performing a second washing process according to a water level in the drum, and
based on determining that the motor remains in the constrained state in the another attempt to rotate the rotator with the additional water, performing a third washing process, the third washing process comprising reducing a torque acting on the rotator, and
wherein reducing the torque acting on the rotator comprises (i) rotating the rotator and the drum in a same direction, (ii) decreasing a target revolutions per minute (rpm) of the rotator in the third washing process to be less than target rpms of the rotator in the first and second washing processes, and (iii) decreasing a drum rpm of the drum in the third washing process to be less than the drum rpms in the first and second washing processes.