| 摘要 |
PURPOSE: A door sealing device of a refrigerator is provided to selectively shut an inside of a refrigerator and an outside of a refrigerator without regard to the deformation of a gasket of a refrigerator. CONSTITUTION: An inside of a refrigerator has a certain temperature by being cooled by the starting of a refrigerator at normal times when a door(D) is closed. And a shape memory alloy(130) is contracted and a shutter plate(120) is placed at a position "B" because the temperature in the refrigerator becomes lower than a certain value. Thus, a piece for preventing leakage of cool air cuts off the inflow of warm air out of a refrigerator to inside of the refrigerator and the leakage of the cool air in the refrigerator. If a user opens the door, the exterior warm air is flowed into the refrigerator and delivered to the shape memory alloy. Then, the shape memory alloy is expanded while pushing the shutter plate to place the shutter plate at a position "A" inside the door. Thereby, the interference of a user to the shutter plate is prevented. Thereafter, the temperature in the refrigerator becomes lower than the certain value and the shape memory alloy is contracted and turns via a gap(102a). Thereby the shutter plate rises up and returns to an original position.
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