| 摘要 |
A refrigerator 1 wherein, after a food product has been stored in a switching compartment 3, the set temperature of the switching compartment 3 is set to a temperature equal to or less than the freezing point of water, and the food product is cooled for a first period, after which the food product is cooled for a second period while the set temperature is gradually lowered, and a supercooled state is maintained, and then the supercooled state of the food product is forcefully cancelled, after which supercooling refrigeration is carried out to refrigerate and preserve the food product. A microcomputer 15 provided on a control board 14 uses the air temperature in the switching compartment 3, as detected by a switching compartment thermistor 11, to calculate a reduction rate for the air temperature inside the switching compartment 3 after the food product has been stored, and estimates a start time and an end time for the second period on the basis of the calculated air temperature reduction rate. Thus, it is possible to determine a period for changing the set temperature in supercooling refrigeration in response to the food product temperature at the time of storage and the weight of the food product. |
