A refrigerator according to an embodiment of the present invention includes a driving assembly that is mounted on the case and an underside of the agitating assembly to generate a driving force for swinging the agitating assembly, and a refrigeration cycle for producing cold air to be supplied to the storage chamber and the cooling device. The cooling device further includes a starting torque supply mechanism supplying mechanical or electric energy to the agitating assembly, to initiate a swinging motion of the agitating assembly.