| 摘要 |
PURPOSE:To satisfactorily prevent or eliminate condensation on a lower surface of a top wall of an internal box in an indirect cooling type low temperature device. CONSTITUTION:A good heat conduction internal box 3 which forms a storage chamber 10 therein is disposed inside a heat insulating external box 2 keeping a distance therefrom. A cold air circulation space 11 is formed between the external and internal boxes 2 and 3 in which space a condenser 12 and fan devices 13, 19 are disposed. A small-sized fan device 23 for introducing cold air in the cold air circulation space 11 is provided in the storage chamber 10, and a rectifier device 24 for directing cold air introduced by the small-sized fan device 23 in the direction of a top wall 3A of the internal box 3 is provided. |
