Ice maker and refrigerator comprising same

Abstract

An ice maker comprises: a first tray forming a part of an ice-making cell; a second tray forming another part of the ice-making cell; and a heater arranged on the first tray or the second tray, wherein the heater operates during a period when cold air is supplied for the purpose of freezing ice.

1 . An ice maker comprising:
 a first tray forming a first portion of a cell that is a space in which a liquid is phase-changed into ice by cold;   a second tray forming a second portion of the cell, the cell including a first cell and a second cell that are arranged in a direction,   a first heater configured to be turned on in at least a section after ice making is completed so that the ice is separated from the cell;   a second heater configured to be turned on in at least partial section while the cold is supplied so that bubbles dissolved in the liquid within the cell moves from a portion, at which the ice is made, toward the liquid that is in a fluid state to make transparent ice; and   a heater case in which the second heater is provided,   wherein the second tray includes:   a first tray wall forming the second portion of the first cell; and   a second tray wall forming the second portion of the second cell, and   wherein the second heater comprises:   a first curved portion which is disposed at the first tray wall; and   a second curved portion which is disposed at the second tray wall, the first curved portion having a different length from the second curved portion.   
     
     
         2 . The ice maker of  claim 1 , wherein the first curved portion has a greater length than the second curved portion. 
     
     
         3 . The ice maker of  claim 1 , wherein the first curved portion has a different shape from the second curved portion. 
     
     
         4 . The ice maker of  claim 1 , wherein the second heater comprises a straight portion, the straight portion being disposed between the first curved portion and the second curved portion. 
     
     
         5 . The ice maker of  claim 1 , wherein the second heater comprises a straight portion, the straight portion being disposed at both side of the first curved portion. 
     
     
         6 . The ice maker of  claim 1 , wherein the first tray wall has a portion surrounded by the first curved portion. 
     
     
         7 . The ice maker of  claim 1 , wherein the first curved portion has a different curvature from the second curved portion. 
     
     
         8 . An ice maker comprising:
 a first tray forming a first portion of a cell that is a space in which a liquid is phase-changed into ice by cold;   a second tray forming a second portion of the cell, the cell including a first cell, a second cell and a third cell that are arranged in a direction,   a heater configured to be turned on in at least partial section while the cold is supplied so that bubbles dissolved in the liquid within the cell moves from a portion, at which the ice is made, toward the liquid that is in a fluid state to make transparent ice; and   wherein the second tray includes:   a first tray wall forming the second portion of the first cell,   a second tray wall forming the second portion of the second cell, and   a third tray wall forming the second portion of a third cell, the third tray wall being disposed between the firsts tray wall and the second tray wall,   wherein the heater comprises:   a first portion which is disposed at the first tray wall;   a second portion which is disposed at the second tray wall; and   a third portion which is disposed at the third tray wall, and   wherein the third portion has a different curvature from each of the first portion and the second portion.   
     
     
         9 . The ice maker of  claim 8 , wherein the third portion has a smaller curvature than each of the first portion and the second portion. 
     
     
         10 . The ice maker of  claim 9 , wherein the third portion has a straight portion and each of the first portion and the second portion has a curved portion. 
     
     
         11 . The ice maker of  claim 8 , wherein the first portion has a different curvature from the second portion. 
     
     
         12 . The ice maker of  claim 8 , wherein the first portion has a different length from the second portion. 
     
     
         13 . The ice maker of  claim 8 , further comprising:
 another heater configured to be turned on in at least a section after ice making is completed so that the ice is separated from the cell, and   a heater case which is provided with the another heater.   
     
     
         14 . The ice maker of  claim 13 , further comprising a first tray cover coupled to the first tray. 
     
     
         15 . The ice maker of  claim 14 , wherein the heater case is integrally formed with the first tray cover. 
     
     
         16 . The ice maker of  claim 14 , wherein the heater case is coupled to the first tray cover. 
     
     
         17 . An ice maker comprising:
 a first tray forming a first portion of a cell that is a space in which a liquid is phase-changed into ice by cold;   a second tray forming a second portion of the cell, the cell including a first cell and a second cell that are arranged in a direction,   a first heater configured to be turned on in at least a section after ice making is completed so that the ice is separated from the cell;   a second heater configured to be turned on in at least partial section while the cold is supplied so that bubbles dissolved in the liquid within the cell moves from a portion, at which the ice is made, toward the liquid that is in a fluid state to make transparent ice; and   a heater case in which the second heater is provided,   wherein the second tray includes:   a first tray wall forming the second portion of the first cell; and   a second tray wall forming the second portion of the second cell, and   wherein the second heater comprises:   a first curved portion which is disposed at the first tray wall; and   a second curved portion which is disposed at the second tray wall, the first curved portion having a same length as the second curved portion and the first curved portion having a different shape from the second curved portion.   
     
     
         18 . A refrigerator comprising:
 a storage room; and   an ice maker according to  claim 1 .   
     
     
         19 . A refrigerator comprising:
 a storage room; and   an ice maker according to  claim 8 .   
     
     
         20 . A refrigerator comprising:
 a storage room; and   an ice maker according to claim  17 .