Abstract: The object of this study is an power saving refrigerator of three regions that can control the temperature independently and accurately, the refrigerator has three separate rooms, the upper part is the fridge, the middle is the interchangeable temperature chamber, and the lower is the freezer. The control system is a multivariable output fuzzy control, it controls the accurate temperature control in separate rooms, cooling system in separate rooms and frequency conversion technology, so as to achieve the functions of power saving, food preservation, low noise and so on.

Key words: Refrigerator, Fuzzy control