JP2006308136A5 - - Google Patents

Claims (8)

A water supply means for supplying water in the water supply tank to the ice tray, a drive means for twisting the ice tray to separate the ice in the ice tray into the ice storage box, and a test for detecting the amount of ice stored in the ice storage box. and ice means, before SL and a water state determining means for determining the presence or absence of water in the ice tray in or said water supply tank, the water is not in the ice tray inside or the water supply tank by the water presence determination means When judged, the refrigerator performs an anti-icing operation for preventing the ice detecting means and the driving means from freezing. The icing prevention operation is an operation of rotating or twisting the ice detecting means or the ice tray or the driving means by a predetermined amount smaller than that in a normal ice making operation. The refrigerator described. As the water presence / absence judging means, an ice tray temperature detecting means for detecting the temperature of the ice tray is provided, and a temperature difference between the pre-water supply temperature and the post-water supply temperature detected by the ice tray temperature detection means is based on a predetermined temperature difference. 3. The refrigerator according to claim 1, wherein it is determined that there is no water in the ice tray or in the water supply tank when the case is smaller at least twice. When the remaining water amount detecting means for detecting the remaining water amount in the water supply tank is detected as the water presence / absence determining means, and the state where the remaining water amount detecting means determines that there is no water in the water supply tank continues at least twice or more The refrigerator according to claim 1 or 2, wherein it is determined that there is no water in the ice tray or in the water supply tank. The refrigerator according to any one of claims 1 to 4, wherein an anti-icing operation canceling unit that cancels the anti-icing operation of the ice detecting unit and the driving unit is provided. During the anti-icing operation, the energization rate of the anti-freezing heater attached in the water supply path from the water tank to the ice tray is reduced, or the energization of the anti-freezing heater is interrupted. The refrigerator according to any one of claims 1 to 5, wherein the refrigerator is characterized. The display unit for notifying the user that there is no water in the water supply tank or the ice tray during the anti-icing operation is provided on the refrigerator compartment door on the front surface of the refrigerator body. The refrigerator in any one of 6. 7. The display device according to claim 1, further comprising display means for informing a user that the icing prevention operation state is in progress during the icing prevention operation. Refrigerator.