FREEZING POINT LOWERING REFRIGERATING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a freezing point lowering refrigerator or the like whose purpose is the preservation of a food stuff at a temperature zone of -3 deg.C-0 deg.C without freezing the same. SOLUTION: A predetermined alternate electric field sufficient for generating a spatial electric potential of 200 V-500 V is generated in a space at a distance of 1 cm from the upper surfaces of respective metallic shelve plates 10 insulated with respect to at least an inside wall 2 in the freezing point lowering refrigerating device by applying alternate frequency of 100 Hz-50 Hz on the respective shelve plates. Therefore, a condition that fresh water is not frozen even when the temperature is lowered to a value lower than 0 deg.C by the predetermined electric field is produced to effect cold storage under this condition.