REFRIGERATOR AND IT'S CONTROL METHOD

摘要

A refrigerator is provided to overcool a cooled body in an overcooling room, and to stably maintain an overcooled state by compensating cool air of a freezing room for desired temperature and supplying it to the inside of the overcooling room. A refrigerator comprises a main body, a cool air supply unit(21), a heat insulation storage room(40), a heater(80), an overcooling room(50) and a damper(60). The main body is arranged in a freezing room. The cool air supply unit supplies cool air to the freezing room. The heater is installed in the inside of the heat insulation storage room, and heats internal cool air. The overcooling room is installed in the inside of the heat insulation storage room, receives a cooled body, and has a cool air flow inlet/outlet for making cool air of the heat insulation storage room to come in and go out. The damper opens/closes the cool air flow inlet/outlet.