Refrigerator and controlling method therefor

Abstract

A refrigerator according to the present disclosure includes a first tray configured to form a portion of an ice making cell, a second tray configured to form another portion of the ice making cell, a tray temperature sensor configured to sense the temperature of the ice making cell, a discharge spark generator disposed around one of the first tray and the second tray and including an electrode, and a controller configured to control the discharge spark generator to generate a spark from the electrode when it is determined that the water in the ice making cell is supercooled based on the temperature measured by the tray temperature sensor.

What is claimed is: 
     
         1 . An ice maker comprising:
 a first tray configured to form a portion of a cell that is a space in which liquid is phase-changed into ice;   a second tray configured to form another portion of the cell; and   a second tray supporter coupled to the second tray;   wherein the second tray supporter comprises:   a first portion configured to support the second tray, and   a second portion extending from a predetermined point of the first portion,   wherein the second portion includes a first extension part and a second extension part,   the first extension part includes a first surface connected or in contact with the first portion and a second surface extending from the first surface in a first direction,   the second extension part includes a third surface connected or in contact with the first portion and a fourth surface extending from the third surface in the first direction,   the first extension part includes a first coupling part to be coupled to the second tray, and   the second extension part includes a second coupling part to be coupled to the second tray,   wherein a distance between an end of the second surface and the first coupling part in the first direction is different from a distance between an end of the fourth surface and the second coupling part in the first direction.   
     
     
         2 . The ice maker of  claim 1 , wherein the end of the distance between the fourth surface and the second coupling part in the first direction is greater than the distance between the end of the second surface and the first coupling part in the first direction. 
     
     
         3 . The ice maker of  claim 2 , wherein the second extension part further includes a third coupling part to be coupled to the second tray, and
 a distance between the end of the fourth surface and the second coupling part in the first direction is different from a distance between the end of the fourth surface and the third coupling part in the first direction.   
     
     
         4 . The ice maker of  claim 3 , wherein a distance between the end of the fourth surface and the third coupling part in the first direction is different from a distance between the end of the second surface and the first coupling part in the first direction. 
     
     
         5 . The ice maker of  claim 1 , wherein a distance between the third surface and the second coupling part in the first direction is different from a distance between the end of the first surface and the first coupling part in the first direction. 
     
     
         6 . The ice maker of  claim 5 , wherein the second extension part further includes a third coupling part to be coupled to the second tray, and
 a distance between the third surface and the second coupling part in the first direction is different from a distance between the third surface and the third coupling part in the first direction.   
     
     
         7 . The ice maker of  claim 6 , wherein a distance between the third surface and the third coupling part in the first direction is different from a distance between the first surface and the first coupling part in the first direction. 
     
     
         8 . The ice maker of  claim 1 , wherein the second extension part further includes a third coupling part to be coupled to the second tray, and
 a distance between the third surface and the second coupling part in the first direction is different from a distance between the third surface and the third coupling part in the first direction.   
     
     
         9 . The ice maker of  claim 1 , wherein the first extension part further includes a fourth coupling part to be coupled to the second tray, and
 wherein a distance between the first surface and the first coupling part in the first direction is different from a distance between the first surface and the fourth coupling part in the first direction.   
     
     
         10 . The ice maker of  claim 1 , wherein the first extension part and the second extension part have different shapes. 
     
     
         11 . An ice maker comprising:
 a first tray configured to form a portion of a cell that is a space in which liquid is phase-changed into ice;   a second tray configured to form another portion of the cell; and   a second tray supporter coupled to the second tray;   wherein the second tray supporter comprises:   a first portion configured to support the second tray, and   a second portion extending from a predetermined point of the first portion,   wherein the second portion includes a first extension part and a second extension part,   the first extension part includes a first coupling hole to be coupled to the second tray, and   the second extension part includes a second coupling hole to be coupled to the second tray,   wherein a distance between the first portion and the first coupling hole is different from a distance between the first portion and the second coupling hole.   
     
     
         12 . The ice maker of  claim 11 , wherein the second extension part further includes a third coupling hole to be coupled to the second tray, and
 wherein a distance between the first portion and the third coupling hole is different from a distance between the first portion and the second coupling hole.   
     
     
         13 . The ice maker of  claim 12 , wherein a distance between the first portion and the third coupling hole is different from a distance between the first portion and the first coupling hole. 
     
     
         14 . The ice maker of  claim 13 , wherein a distance between the first coupling hole and the third coupling hole is different from a distance between the second coupling hole and the fourth coupling hole. 
     
     
         15 . The ice maker of  claim 13 , wherein a distance between the first coupling hole and the second coupling hole is different from a distance between the third coupling hole and the fourth coupling hole. 
     
     
         16 . The ice maker of  claim 13 , wherein a distance between the first coupling hole and the fourth coupling hole is different from a distance between the second coupling hole and the third coupling hole. 
     
     
         17 . The ice maker of  claim 11 , wherein the first extension part further includes a fourth coupling hole to be coupled to the second tray, and
 wherein a distance between the first portion and the first coupling hole is different from a distance between the first portion and the fourth coupling hole.   
     
     
         18 . The ice maker of  claim 11 , wherein the first extension part and the second extension part have different shapes. 
     
     
         19 . A refrigerator comprising
 a storage chamber;   a door for opening and closing the storage chamber; and   an ice maker of  claim 1 .