| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerator capable of improving defrosting efficiency of a cooler. SOLUTION: A cooling chamber 40b is defined between a partitioning plate and a heat insulating wall 1c at its back side, by the partitioning plate 40c disposed in a cold air passage 40 at a back side of a freezing compartment 5, a cooler 30 is disposed in the cooling compartment, clearance gaps C1, C2 are respectively formed between the cooler 30, and the partitioning plate 40c and the heat insulating plate 1c, and C2>C1 is determined when the clearance gap between the partitioning plate 40c and the cooler 30 is C1, and the clearance gap between the cooler 30 and the heat insulating wall 1c at the back side is C2, thus the air heated by a defrosting heater 43 at a lower side of the cooler rises through the larger clearance gap C2, the partitioning plate 40c is cooled by the cold air of the freezing compartment, and further as its temperature is low, the cold air falls through the clearance gap C1 between the partitioning plate 40c and the cooler 30 from an upper side of the cooler 30, thus a convection flow circulation passage returning to the defrosting heater 43 is easily formed, unevenness in temperature distribution of the cooler is reduced, and the defrosting efficiency can be improved. COPYRIGHT: (C)2011,JPO&INPIT |
