| CPC F25C 1/243 (2013.01) [F25C 5/08 (2013.01); F25C 2400/08 (2013.01); F25C 2400/10 (2013.01); F25C 2600/04 (2013.01); F25C 2700/12 (2013.01)] | 24 Claims |
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1. A refrigerator comprising:
a storage chamber;
a first temperature sensor configured to sense a temperature of the storage chamber;
a door configured to open or close the storage chamber;
a cold air supply configured to provide cold air;
a tray provided in the storage chamber and including a cell that forms a space in which liquid introduced into the space is to phase-change into ice;
a second temperature sensor configured to sense a temperature in the cell;
a first heater configured to supply heat to the tray in an ice making process;
a second heater configured to supply heat to the tray in an ice separation process; and
a controller configured to:
when the controller determines that it is necessary to increase cooling power of the cold air supply based on the temperature sensed by the first temperature sensor after detecting opening or closing of the door during the ice making process, the controller is to increase the cooling power of the cold air supply, and when the cooling power of the cold air supply is determined to be increased, the controller is to increase a heating amount of the first heater, and
after detecting opening or closing of the door during the ice making process, when the controller determines that it is necessary to reduce a heating amount of the first heater based on a change of the temperature sensed by the second temperature sensor, the controller is to reduce the heating amount of the first heater.
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17. A method for controlling a refrigerator that includes a first tray accommodated in a storage chamber, a second tray configured to define a cell together with the first tray, a cold air supply configured to provide cold air, and a heater configured to supply heat to the cell such that bubbles dissolved in a liquid inside the cell move from a portion at which ice is made toward the liquid, the method comprising:
performing an ice making process after a liquid supply is completed;
turning on the heater during the ice making process;
detecting opening or closing of a door during the ice making process;
when the opening or the closing of the door is detected during the ice making process, determining whether to reduce, maintain or increase a heating amount of the heater, based on a sensed temperature of the cell, and determining whether to increase cooling power of the cold air supply based on a temperature of the storage chamber;
when the cooling power of the cold air supply is determined to be increased, increasing the cooling power of the cold air supply and increasing the heating amount of the heater such that an ice making rate is maintained within a predetermined range, and
when the heating amount of the heater is determined to be reduced, reducing the heating amount of the heater.
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22. A refrigerator comprising:
a storage chamber;
a door configured to open or close the storage chamber;
a cold air supply configured to provide cold air;
a tray provided in the storage chamber and including a cell that forms a space in which liquid introduced into the space is to phase-change into ice;
a temperature sensor configured to sense a temperature in the cell;
a first heater in contact with the tray, and configured to supply heat to the tray in an ice making process;
a second heater configured to supply heat to the tray in an ice separating process; and
a controller configured to:
after detecting opening or closing of the door during the ice making process,
determine whether to increase cooling power of the cold air supply based on a temperature of the storage chamber; and
determine whether to reduce a heating amount of the first heater based on a change of the temperature sensed by the temperature sensor,
wherein when the cooling power of the cold air supply is determined to be increased, the controller is configured to increase the cooling power of the cold air supply and increase the heating amount of the first heater.
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