Abstract: In the refrigerator according to the present invention, the driving motor is provided outside of the refrigerator and hence the heat load of the freezing cycle can be decreased by the value corresponding to the value of heat which would be generated by the driving motor provided inside of the refrigerator, thereby reducing the time of cooling operation. Additionally, a bush is used to block the gap around the driving shaft penetrating into the refrigerator and hence a complete shut-off is established between the interior and the exterior of the refrigerator. Since the driving motor is housed in a completely sealed housing so that construction of the driving motor free from lock troubles is available. In addition, in the case of construction wherein a liquid polyurethane is filled in the insulated wall of the refrigerator for foam-forming therein, leakage of the liquid polyurethane can be fully prevented.