Refrigerator and control method thereof

Abstract

A refrigerator includes a compressor that compresses a refrigerant. The refrigerator identifies whether a temperature change of the inside of the storage compartment after the first time period is greater than or equal to a pre-set value based on the obtained temperature prediction information, and controls, based on the temperature change of the inside of the storage compartment after the first time period being identified as greater than or equal to the pre-set value, the motor to drive the compressor at a pre-set revolutions per minute (RPM).

What is claimed is: 
     
         1 . A refrigerator comprising:
 a compressor configured to compress a refrigerant;   a motor configured to transfer power to the compressor;   a condenser configured to condense the refrigerant which is compressed in the compressor;   a valve configured to reduce pressure of the refrigerant which is condensed in the condenser;   an evaporator configured to evaporate the refrigerant which is reduced in pressure in the valve;   a storage compartment configured to be adjusted to a pre-set temperature through a heat-exchange process with the evaporator;   memory storing at least one instruction; and   one or more processors,   wherein the at least one instruction, when executed by the one or more processors individually or collectively, cause the refrigerator to:
 identify, based on temperature information of an inside of the storage compartment being obtained, a temperature change rate of the inside of the storage compartment corresponding to a first time period that comprises the temperature information and a first time-point at which the temperature information is obtained, 
 obtain temperature prediction information of the inside of the storage compartment after the first time period by providing the identified temperature change rate to a temperature prediction model, 
 identify whether a temperature change of the inside of the storage compartment after the first time period is greater than or equal to a pre-set value based on the obtained temperature prediction information, and 
 control, based on the temperature change of the inside of the storage compartment after the first time period being identified as greater than or equal to the pre-set value, the motor to drive the compressor at a pre-set revolutions per minute (RPM). 
   
     
     
         2 . The refrigerator of  claim 1 , wherein the at least one instruction, when executed by the one or more processors individually or collectively, cause the refrigerator to:
 obtain the temperature prediction information of the inside of the storage compartment corresponding to a second time-point after the first time period by providing the identified temperature change rate to the temperature prediction model.   
     
     
         3 . The refrigerator of  claim 1 , wherein the at least one instruction, when executed by the one or more processors individually or collectively, cause the refrigerator to:
 obtain temperature change rate prediction information of the inside of the storage compartment corresponding to a second time period after the first time period by providing the identified temperature change rate to the temperature prediction model.   
     
     
         4 . The refrigerator of  claim 1 , wherein the at least one instruction, when executed by the one or more processors individually or collectively, cause the refrigerator to:
 identify whether a temperature increase rate of the inside of the storage compartment corresponding to a pre-set time period is greater than or equal to the pre-set value based on the obtained temperature prediction information, and   control, based on the temperature increase rate being identified as greater than or equal to the pre-set value, the motor to drive the compressor at the pre-set RPM.   
     
     
         5 . The refrigerator of  claim 4 , wherein the at least one instruction, when executed by the one or more processors individually or collectively, cause the refrigerator to:
 control the motor to drive the compressor at a higher RPM as the temperature increase rate increases.   
     
     
         6 . The refrigerator of  claim 1 , wherein the at least one instruction, when executed by the one or more processors individually or collectively, cause the refrigerator to:
 identify whether a temperature increase rate of the inside of the storage compartment corresponding to a pre-set time period is less than the pre-set value based on the obtained temperature prediction information, and   control, based on the temperature increase rate being identified as less than the pre-set value, the motor to drive the compressor at a lower RPM than the pre-set RPM.   
     
     
         7 . The refrigerator of  claim 1 , wherein the temperature prediction model is trained based on temperature change rate information corresponding to a pre-set time period and the temperature prediction information after the pre-set time period which is output by inputting the temperature change rate information corresponding to the pre-set time period in the temperature prediction model. 
     
     
         8 . The refrigerator of  claim 1 , further comprising:
 a temperature sensor,   wherein the at least one instruction, when executed by the one or more processors individually or collectively, cause the refrigerator to:
 obtain the temperature information of the inside of the storage compartment by sensing temperature of the inside of the storage compartment through the temperature sensor. 
   
     
     
         9 . A control method of a refrigerator, the control method comprising:
 identifying, based on temperature information of an inside of a storage compartment being obtained, a temperature change rate of the inside of the storage compartment corresponding to a first time period that comprises the temperature information and a first time-point based on the first time-point at which the temperature information is obtained;   obtaining temperature prediction information of the inside of the storage compartment after the first time period by providing the identified temperature change rate to a temperature prediction model;   identifying whether a temperature change of the inside of the storage compartment after the first time period is greater than or equal to a pre-set value based on the obtained temperature prediction information; and   controlling, based on the temperature change of the inside of the storage compartment after the first time period being identified as greater than or equal to the pre-set value, a motor to drive a compressor at a pre-set revolutions per minute (RPM).   
     
     
         10 . The control method of  claim 9 , wherein the obtaining the temperature prediction information comprises obtaining the temperature prediction information of the inside of the storage compartment corresponding to a second time-point after the first time period by providing the identified temperature change rate to the temperature prediction model. 
     
     
         11 . The control method of  claim 9 , wherein the obtaining temperature prediction information comprises obtaining temperature change rate prediction information of the inside of the storage compartment corresponding to a second time period after the first time period by providing the identified temperature change rate to the temperature prediction model. 
     
     
         12 . The control method of  claim 9 , wherein the identifying whether the temperature change is greater than or equal to the pre-set value comprises identifying whether a temperature increase rate of the inside of the storage compartment corresponding to a pre-set time period is greater than or equal to the pre-set value based on the obtained temperature prediction information, and
 wherein the controlling the motor comprises controlling, based on the temperature increase rate being identified as greater than or equal to the pre-set value, the motor to drive the compressor at the pre-set RPM.   
     
     
         13 . The control method of  claim 12 , wherein the controlling the motor comprises controlling the motor to drive the compressor at a higher RPM as the temperature increase rate increases. 
     
     
         14 . The control method of  claim 9 , wherein the identifying whether the temperature change is greater than or equal to the pre-set value comprises identifying whether a temperature increase rate of the inside of the storage compartment corresponding to a pre-set time period is less than the pre-set value based on the obtained temperature prediction information, and
 wherein the controlling the motor comprises controlling, based on the temperature increase rate being identified as less than the pre-set value, the motor to drive the compressor at a lower RPM than the pre-set RPM.   
     
     
         15 . The control method of  claim 9 , wherein the temperature prediction model is trained based on temperature change rate information corresponding to a pre-set time period and temperature prediction information after the pre-set time period which is output by providing the temperature change rate information corresponding to the pre-set time period to the temperature prediction model. 
     
     
         16 . The control method of  claim 9 , wherein identifying a temperature change rate of the inside of the storage compartment comprises obtaining the temperature information of the inside of the storage compartment by sensing temperature of the inside of the storage compartment. 
     
     
         17 . One or more non-transitory computer-readable storage medium storing one or more computer programs including computer-executable instructions that, when executed by one or more processors of an electronic device individually or collectively, cause the electronic device to perform operations, the operations comprising:
 identifying, based on temperature information of an inside of a storage compartment being obtained, a temperature change rate of the inside of the storage compartment corresponding to a first time period that comprises the temperature information and a first time-point based on the first time-point at which the temperature information is obtained;   obtaining temperature prediction information of the inside of the storage compartment after the first time period by providing the identified temperature change rate to a temperature prediction model;   identifying whether a temperature change of the inside of the storage compartment after the first time period is greater than or equal to a pre-set value based on the obtained temperature prediction information; and   controlling, based on the temperature change of the inside of the storage compartment after the first time period being identified as greater than or equal to the pre-set value, a motor to drive a compressor at a pre-set revolutions per minute (RPM).   
     
     
         18 . The medium of  claim 17 , wherein the obtaining the temperature prediction information comprises obtaining the temperature prediction information of the inside of the storage compartment corresponding to a second time-point after the first time period by providing the identified temperature change rate to the temperature prediction model. 
     
     
         19 . The medium of  claim 17 , wherein the obtaining temperature prediction information comprises obtaining temperature change rate prediction information of the inside of the storage compartment corresponding to a second time period after the first time period by providing the identified temperature change rate to the temperature prediction model. 
     
     
         20 . The medium of  claim 17 , wherein the identifying whether the temperature change is greater than or equal to the pre-set value comprises identifying whether a temperature increase rate of the inside of the storage compartment corresponding to a pre-set time period is greater than or equal to the pre-set value based on the obtained temperature prediction information, and
 wherein the controlling the motor comprises controlling, based on the temperature increase rate being identified as greater than or equal to the pre-set value, the motor to drive the compressor at the pre-set RPM.