| 摘要 |
PROBLEM TO BE SOLVED: To prevent an accident of a damper device by providing a control means to control the opening/closing of a cooled air flow passage of a duct by turning a damper plate by a damper motor through a rotary shaft, and to close the damper plate while a cooler is heated for defrosting operation. SOLUTION: The cooled air is supplied from a cooled air generation space 10 to an ice-making chamber 3 and a freezing chamber 2, and supplied to a refrigerating chamber 4 through a damper device 13 and a duct 12. The damper device 13 is provided with a damper plate 15 to open/close a damper port 14f from its upper part turnably on a body frame 14 through a rotary shaft 15a, and is built in a lower duct part 11b so that an output shaft part of a final gear to be connected to a rotary shaft of a damper motor and the rotary shaft 15a are integratedly turned. When defrosting of a cooler 10a is started, its control device closes the damper plate 15 by the rotation of the damper motor, and the cooled air generation space 10 is shut off, and no frost is generated on the rotary shaft 15a. When defrosting is completed and the cooled air is again supplied from the cooler 10a, the damper plate 15 is in the open condition and the cooled air is supplied to the refrigerating chamber 4. |
