Refrigerator and method for controlling the same

Abstract

According to an embodiment of the present disclosure, a method for controlling a refrigerator, the refrigerator including an ice mater including a first tray and a second try provided in a storage space and coupled to each other to define a ice chamber and a driving part that rotates the second tray, a first heater provided in the first tray to heat the first tray, a second heater provided in the second tray to heat the second tray, and an ejector provided below the second tray to press an external portion of the second tray to separate ice from the second tray when the second tray is rotated for ice separation, and a controller that controls operation of the ice maker, the method including starting ice making by supplying water to the ice chamber; heating the second tray by turning on the second heater during ice making; heating the first tray by turning on the first heater for ice separation after completion of ice making; and heating the second tray by turning on the second heater for ice separation.

Description

TECHNICAL FIELD[0001]The present disclosure relates to a refrigerator and a control method thereof.BACKGROUND ART[0002]In general, refrigerators are home appliances that allow low-temperature storage of food in an internal storage space that is shielded by a door.[0003]The refrigerator may cool the inside of a storage space using cold air, thereby storing stored foods in a refrigerated or frozen state.[0004]In general, an ice maker for making ice is provided in the refrigerator.[0005]The ice maker is configured to make ice by receiving water supplied from a water supply source or a water tank in a tray.[0006]In addition, the ice maker is configured to separate ice that has been made from the ice tray by a heating method or a twisting method.[0007]On the other hand, when the shape of the ice is formed in a spherical shape, it may be more convenient to use the ice and it is possible to provide a different feeling of use to the user. In addition, even when storing the produced ice, it ...

AI Technical Summary

Benefits of technology

[0034]According to an embodiment of the present disclosure, there is an advantage in that the surface of ice bound to the tray is melted by applying heat for ice separation to the upper tray and the lower tray to facilitate the ice separation when the ice making has been completed.

[0035]In addition, there is an advantage in that the time for ice separation is shortened by applying heat for ice separation to both the upper tray and the lower tray.

[0036]In addition, since ice is produced from the upper portion as the lower heater is operated during the ice making, bubbles move to the lower side, and finally, the bubbles exist only in the local portion of the ice at the lowermost side, thus making the spherical ice transparent as a whole.

[0037]According to an embodiment of the present disclosure, when the ice separation control is started, the ice separation can be easily performed by operating the heater for ice separation and rotating the lower tray by operating the driving motor in the forward direction.

[0038]On the other hand, it is possible to detect whether the ice is full during the ice separation, identify a case of non-full ice, a case of full ice, or a case where full ice is released after ice has been full for the first time and control the position of the lower tray and whether to the heater, thus performing stable ice separation.

[0039]According to the embodiment of the present disclosure, when an abnormal state of the lower tray is detected, control for resolving the abnormal state of the lower tray may be performed, so that ice making is possible immediately after the abnormal state is resolved.

Problems solved by technology

In the case of the prior document, the ice maker further include an ice separating heater for heating the upper cell for ice separation but when only the upper cell is heated, the time for ice separation becomes long and the separation of ice from the lower cell is not smooth.

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