CONTROLLER FOR FREEZING REFRIGERATOR

摘要

PURPOSE:To obtain a controller for a freezing refrigerator for reserving food, in which precooling immediately before defrosting is effected in accordance with the heat load of the food in the refrigerator to eliminate the temperature rise of the food due to the shortage of precooling or the increase of electric power consumption due to excessive precooling. CONSTITUTION:The inside temperature of a refrigerator is detected by an inside temperature detecting means 21 and when the setting time of a compressor operating time accumulating timer 22 has been finished, a cooling time from the reference value of a second reference circuit 25 to the reference value of a fourth reference circuit 32 is measured by a cooling time measuring means 31. Fuzzy logical operation is effected by a fuzzy reasoning processor 33 from the measured cooling time and an atmospheric temperature detected by an atmospheric temperature detecting means 30 based on a control rule taken out of a memory 34 whereby a precooling temperature is decided and the precooling temperature is set by a cooling temperature setting means 35.