Refrigerator with a cool air dispersing device capable of preventing backflow of air in a cooling compartment

A refrigerator comprising:

• an evaporator for generating cool air;
• an air circulation device for creating a forced flow of the cool air;
• a duct housing forming a cool air duct for guiding the forced flow of cool air, said duct housing having a plurality of cool air discharge ports open into a cooling compartment of the refrigerator for discharging the forced flow of cool air into the cooling compartment;
• a plurality of cool air dispersing blades of planar plate shape corresponding to the discharge ports respectively, said cool air dispersing blades being capable of rotating, said cool air dispersing blades for controlling a discharge direction of the forced cool air flow supplied into said cooling compartment according to a rotational position thereof, and for closing the discharge ports at a predetermined rotational position thereof in response to a termination of the forced air flow to the cooling compartment to prevent a backflow of air out of the cooling compartment;
• and
• a means for rotating said cool air dispersing blades.