| 摘要 |
PURPOSE:To provide a freezer wherein moisture of atmosphere is excluded in the freezer, and the wetting of frozen materials is eliminated in the case of defrosting. CONSTITUTION:A freezing device constituted of a vacuum vessel 1, equipped with an opening and closing lid capable of retaining air-tightness, a refrigerant evaporator 3 provided in the vacuum vessel 1, a refrigerant supplying unit 6 provided at the outside of the vacuum vessel 1 and a refrigerant supplying tube 4 as well as a refrigerant returning tube 5, which are connecting these instruments, are provided and, further, at least one of an evacuating device 7, connected to the vacuum vessel 1, and a drying gas supplying device 8, connected to the vacuum vessel 1 also, is provided while the material to be frozen 11 is put on the refrigerant evaporator 3 to freeze it. |
