Ice maker, refrigerator and control method of the same

Abstract

Provided are an ice maker, a refrigerator and a control method therefor, enabling the efficient separation of ice from ice making grooves in an ice tray at the time point when the ice making is completed, regardless of the size (capacity), operation rate, surrounding temperature and cooling capacity of a refrigerator. To this end, the ice maker, according to the present invention, comprises: an ice tray having ice making grooves formed therein; an ice separating motor driven so that ice is separated from the ice making grooves; a temperature detection unit; and a control unit for controlling the ice separating motor, wherein the control unit operates the ice separating motor or an ice separating heater at an ice separation starting time point or a heating starting time point calculated using temperatures detected according to time by the temperature detection unit, or a cumulative ice making time.

1 . An ice maker comprising:
 an ice tray having ice making grooves formed therein;   an ice separating motor driven to separate ice from the ice making grooves;   a casing having the ice separating motor mounted therein;   a motor control unit or a heater control unit of the ice maker provided in a refrigerator or the ice maker,   wherein forcibly delayed time is applied to the control unit before starting ice separation after water is supplied and the control unit operates the ice separating motor or an ice separating heater after the forcibly delayed time when a combination of ice making time and ice making temperature satisfies a preset ice separation condition.   
     
     
         2 . An ice maker comprising:
 an ice tray having ice making grooves formed therein;   an ice separating motor driven to separate ice from the ice making grooves; and   a control unit configured to control the ice separating motor in the ice maker and a refrigerator,   wherein the control unit operates the ice separating motor or an ice separating heater at an ice separation starting time point or a heating starting time point calculated using time elapsed after ice making water is supplied to the ice making grooves and temperature of a refrigerator storage or temperature of an ice tray portion.   
     
     
         3 . (canceled) 
     
     
         4 . An ice maker comprising:
 an ice tray having ice making grooves formed therein;   an ice separating motor driven to separate ice from the ice making grooves; and   a control unit configured to control the ice separating motor,   wherein in the control unit, ice separation preset temperature of a succeeding time point in time among a plurality of ice separation starting time points is preset higher than preset temperature of a preceding time point in time among the plurality of ice separation starting time points.   
     
     
         5 - 6 . (canceled) 
     
     
         7 . The ice maker of  claim 1 , wherein the control unit determines the first preset time as an operation time point of the ice separating heater or the ice separating motor as the temperature detected by the temperature detection unit is equal to or less than a first-first preset temperature, when temperature detected by the temperature detection unit is equal to or less than a first preset temperature after a first preset time after the ice making water is supplied to the ice making grooves, in case that the temperature detected by the temperature detection unit is higher than the first preset temperature after the first preset time after the ice making water is supplied to the ice making grooves, the control unit determines the second preset time as the operation time point of the ice separating heater or the ice separating motor when the temperature detected by the temperature detection unit is higher than the first preset temperature after a second preset time that is succeeding in time to the first preset time. 
     
     
         8 . The ice maker of  claim 7 , wherein the control unit determines a third preset time as the operation time point of the ice separating heater or the ice separating motor when the temperature detected by the temperature detection unit is equal to or less than the second preset temperature that is higher than the first preset temperature after the third preset time that is succeeding in time to the second preset time, in case that the temperature detected by the temperature detection unit is equal to or less than the first preset temperature after the second preset time after the ice making water is supplied to the ice making grooves. 
     
     
         9 - 16 . (canceled) 
     
     
         17 . A refrigerator comprising the ice maker of  claim 1 .