To eliminate a reduction in quality of frozen items in a freezer, enable a control corresponding to variation in cooling load to be carried out and further enable a burden of user against monitoring the freezer to be reduced.
This device is comprised of each of freezers 9 for cooling some frozen items stored in a plurality of refrigerator warehouses 13; a demand controller 7; and a central control device 8 in which a demand signal is inputted from the demand controller, a plurality of operating set temperature of freezers and a plurality of present temperatures of refrigerator warehouses are inputted. A central control device 8 may compare an inputted operation set temperature of each of the freezers with a varying amount in a unit time of a difference between the present temperatures of each of the refrigerator warehouses, when the demand signal is produced and then preferentially stops the operation of the freezer of the refrigerant warehouse showing a low variation in temperature difference.
KITAUCHI HAJIME
MORIZAKI EMI
