| CPC F25C 5/08 (2013.01) [F25C 1/18 (2013.01); F25C 1/24 (2013.01); F25C 1/25 (2018.01); F25D 29/00 (2013.01); F25C 2400/06 (2013.01); F25C 2400/10 (2013.01); F25C 2700/12 (2013.01); F25D 2700/123 (2013.01)] | 20 Claims |
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1. A refrigerator comprising:
a storage chamber;
a cooler including a cold air supply part configured to supply cold air; and
an ice maker comprising:
a tray configured to form a cell having a space in which a liquid introduced into the space is phase-changed into ice;
a heater configured to supply heat to the cell; and
a temperature sensor configured to sense an ambient temperature of a space outside the refrigerator; and
a controller configured to control the heater and the cooler such that:
the controller controls the heater to operate during an ice making process so that air bubbles dissolved in the liquid within the space of the cell move from where the liquid is phase-changing into the ice toward where the liquid is still in a fluid state,
the controller controls the cooler so that a cooling power of the cooler is a first cooling power when a temperature sensed by the temperature sensor is greater than or equal to a limit temperature during the ice making process, and the cooling power of the cooler is a second cooling power when the temperature is less than the limit temperature, the first cooling power being greater than the second cooling power, and
the controller controls the heater so that a heating amount of the heater is a first heating amount when the temperature sensed by the temperature sensor is greater than or equal to the limit temperature during the ice making process and the heating amount of the heater is a second heating amount when the temperature is less than the limit temperature,
wherein, in a state in which the temperature sensed by the temperature sensor is less than the limit temperature, the controller increases the heating amount of the heater when a current target temperature of the storage chamber decreases to a first target temperature, and the controller decreases the heating amount of the heater when the current target temperature of the storage chamber increases to a second target temperature greater than the first target temperature.
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