A refrigerator for circulating cold air which is a gas cooled in a cooling compartment, said refrigerator comprising: a storage compartment partitioned with heat insulation; a spray device configured to supply mist to said storage compartment; a damper provided in an air passage for circulating the cold air from the cooling compartment to said storage compartment; a control unit configured to control said spray device so that an operation of said damper and an operation of said spray device are coordinated; and a delay unit configured to command said control unit to (i) stop the operation of said spray device after an elapse of a first time period since said damper is opened, and (ii) start the operation of said spray device after an elapse of a second time period since said damper is closed; wherein said delay unit is configured to generate, based on an open signal issued when said damper is opened, a first signal for stopping the operation of said spray device after the elapse of the first time period, and said control unit is configured to stop the operation of said spray device based on the first signal; wherein said delay unit is configured to generate, based on a close signal issued when said damper is closed, a second signal for starting the operation of said spray device after the elapse of the second time period, and said control unit is configured to start the operation of said spray device based on the second signal; wherein said storage compartment includes: a first storage compartment which is disposed on a way of the air passage and to which the mist is supplied, and a second storage compartment disposed upstream of said first storage compartment; and an inside temperature detection unit configured to detect a temperature of said second storage compartment, and said control unit is configured to generate the open signal when a result of the detection by said inside temperature detection unit exceeds a predetermined threshold range, and to generate the close signal when the result of the detection falls below the predetermined threshold range; characterized in that the second time period is shorter than or equal to the first time period. a storage compartment partitioned with heat insulation; a spray device configured to supply mist to said storage compartment; a damper provided in an air passage for circulating the cold air from the cooling compartment to said storage compartment; a control unit configured to control said spray device so that an operation of said damper and an operation of said spray device are coordinated; and a delay unit configured to command said control unit to (i) stop the operation of said spray device after an elapse of a first time period since said damper is opened, and (ii) start the operation of said spray device after an elapse of a second time period since said damper is closed; wherein said delay unit is configured to generate, based on an open signal issued when said damper is opened, a first signal for stopping the operation of said spray device after the elapse of the first time period, and said control unit is configured to stop the operation of said spray device based on the first signal; wherein said delay unit is configured to generate, based on a close signal issued when said damper is closed, a second signal for starting the operation of said spray device after the elapse of the second time period, and said control unit is configured to start the operation of said spray device based on the second signal; wherein said storage compartment includes: a first storage compartment which is disposed on a way of the air passage and to which the mist is supplied, and a second storage compartment disposed upstream of said first storage compartment; and an inside temperature detection unit configured to detect a temperature of said second storage compartment, and said control unit is configured to generate the open signal when a result of the detection by said inside temperature detection unit exceeds a predetermined threshold range, and to generate the close signal when the result of the detection falls below the predetermined threshold range; characterized in that the second time period is shorter than or equal to the first time period.