Refrigerator and method for controlling same

Abstract

A refrigerator according to the present invention comprises: a storage chamber in which food is stored; a cold air supply means for supplying cold air to the storage chamber; a tray forming an ice-making cell as a space in which water undergoes a phase change to ice by means of the cold air; a heater for supplying heat to the tray; and a controller for controlling the heater. The controller starts ice-making after water supplied to the ice-making cell by a first amount of water supply is completed. The controller turns on the heater in at least a part of a range in which the cold air supply means supplies cold air such that air bubbles dissolved in water inside the ice-making cell can move from ice-generating parts to liquid-state water, thereby generating transparent ice. The controller determines whether or not the heater is functioning abnormally in the ice-making process. If it is determined that the heater is functioning abnormally, the controller supplies water to the ice-making cell by a second amount of water supply, which is smaller than the first amount of water supply, during the next water supply process.

Description

technical field [0001] This instruction relates to a refrigerator and a control method thereof. Background technique [0002] In general, a refrigerator is a home appliance capable of storing food at a low temperature in an internal storage space shielded by a door. The refrigerator cools the inside of the storage space by using cold air, and can preserve the stored food in a refrigerated or frozen state. Generally, an ice maker for making ice is provided in the refrigerator. The ice maker accommodates water supplied from a water supply source or a water tank behind a tray, and generates ice by cooling the water. [0003] The ice maker can remove ice after ice making from the ice tray by heating or twisting. [0004] The ice maker, which automatically supplies water and removes ice, is formed to open upward to hold molded ice. [0005] The ice made in the ice maker with the above-mentioned structure has a flat surface at least on one side, such as a crescent shape or a c...

AI Technical Summary

Problems solved by technology

[0015] However, according to Conventional Document 2, when the volume of water simply decreases, the amount of heating of the heater is increased, so it is difficult to produce ice with uniform transparency depending on the shape of the ice.

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