US 11,740,013 B2
Refrigerator and controlling method thereof
Sungho Cho, Suwon-si (KR); Seungwan Kang, Suwon-si (KR); Daesung Ki, Suwon-si (KR); Hyunuk Park, Suwon-si (KR); Chanyoung Park, Suwon-si (KR); Taein Eom, Suwon-si (KR); Seungmi Kang, Suwon-si (KR); and Kyungtae Ko, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on May 17, 2021, as Appl. No. 17/322,138.
Claims priority of application No. 10-2020-0075089 (KR), filed on Jun. 19, 2020.
Prior Publication US 2021/0396461 A1, Dec. 23, 2021
Int. Cl. F25D 23/02 (2006.01); F25D 29/00 (2006.01); E05F 15/611 (2015.01); H02P 8/14 (2006.01); H02P 3/06 (2006.01)
CPC F25D 29/00 (2013.01) [E05F 15/611 (2015.01); F25D 23/028 (2013.01); H02P 3/06 (2013.01); H02P 8/14 (2013.01); E05Y 2900/31 (2013.01); F25D 2700/02 (2013.01); F25D 2700/04 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A refrigerator, comprising:
a body comprising a door;
a door opening device comprising a motor, the door opening device configured to open the door through a rotation of the motor;
a first sensor configured to sense an opening of the door;
a second sensor configured to sense a position of the door; and
a processor,
wherein the processor is configured to:
control, based on a user command for the opening of the door being obtained, the motor to rotate at a first speed,
control, based on the opening of the door being sensed by the first sensor, the motor to rotate by reducing a speed of the motor in a series of stages, each stage slower than a previous stage, until a second speed which is slower than the first speed is reached,
control, based on the position of the door being sensed in a first position by the second sensor, the motor to open the door to a second position by rotating at the second speed,
identify whether a rotational speed of the motor is faster than a threshold speed, wherein the rotational speed of the motor is a speed of the motor while the door is being opened from a closed position to the first position, and
control, based on the identified rotational speed of the motor being faster than the threshold speed, the motor to open the door to the second position by rotating at a third speed which is slower than the second speed.