Ice maker and refrigerator

Abstract

An ice maker includes an upper tray defining an upper chamber that is a portion of an ice chamber; a lower tray defining a lower chamber that is another portion of the ice chamber, where the lower tray is relatively rotatable relative to the upper tray; and an upper heater disposed around the upper tray, for providing heat to the upper chamber. The upper tray is made of a non-metal material and a flexible material, the upper heater is a DC heater receiving DC power, at least a portion of the upper tray is thicker than the lower tray, an accommodation part for accommodating the upper heater is formed on the upper tray, and at least a portion of the upper heater is disposed to vertically overlap the ice chamber in a state that the upper heater is accommodated in the accommodation part.

What is claimed is: 
     
         1 . An ice maker comprising:
 an upper tray defining an upper chamber that is a portion of an ice chamber for forming ice therein, the upper tray being made of a non-metal material that is a flexible material;   a lower tray defining a lower chamber that is another portion of the ice chamber, the lower tray being configured to rotate relative to the upper tray; and   an upper heater disposed at the upper tray and configured to provide heat to the upper chamber, the upper heater comprising a direct current (DC) heater configured to receive DC power,   wherein a thickness of at least a portion of the upper tray defining the upper chamber is greater than a thickness of a portion of the lower tray defining the lower chamber,   wherein the upper tray defines an accommodation part that accommodates the upper heater, and   wherein at least a portion of the upper heater is accommodated in the accommodation part and vertically overlaps with the ice chamber.