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

Claim 10:
11. A method for controlling a refrigerator having an ice maker with a first tray and a second tray, the method comprising:
supplying liquid to a space of a cell formed by the first tray and the second tray, the second tray being moveable between a first position, a second position, and a third position, when the second tray is provided at the second position;
moving the second tray from the second position to the first position after supplying liquid has completed;
generating ice in the space when the second tray is provided at the first position;
moving the second tray from the first position to the third position after the ice has been generating, the second position being provided between the first position and the third position;
turning on a first heater during generating the ice so that air bubbles dissolved in the liquid are moved away from where ice is forming in the liquid and toward liquid still in a liquid state;
turning on a second heater to provide heat to the cell during an ice separating process;
outputting a first signal when the second tray is moving from the first position to the second position;
outputting a second signal when the second tray is at the first position;
changing an output of the first signal to the second signal when the second tray has moved to the second position; and
when the refrigerator is turned on after being turned off,
turning on at least one of the first heater or the second heater,
turning off the at least one of the first heater or the second heater when a temperature detected by a temperature sensor reaches a predetermined temperature, and
moving the second tray to the second position based on an output signal.