Patent ID: 11859888
Assignee: LG ELECTRONICS INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 18:
19. A method for controlling a refrigerator having an ice maker with a first tray and a second tray, the method comprising:
turning on the refrigerator, the second tray being configured to move in a first direction and a second direction to first, second, and third positions with respect to the first tray, and the first and second trays being configured to form a cell having a space in which liquid is phase-changed to ice, wherein the refrigerator further includes a sensor configured to output a first signal and a second signal;
moving the second tray in a predetermined pattern when the second signal is output;
moving the second tray in the second direction until the second signal is output and then moving the second tray in the predetermined pattern when the first signal is output; and
moving the second tray to the second position when the first signal is output after the second tray has moved in the predetermined pattern,
wherein, when the second tray moves from the second position to the first position, the second tray is rotated in the first direction, and
wherein the moving of the second tray in the predetermined pattern comprises:
moving the second tray for a first predetermined time in the second direction; and
moving the second tray for a second predetermined time in the first direction, the second predetermined time being less than the first predetermined time.