| 摘要 |
PURPOSE:To equivalently and efficiently cool a plurality of containing boxes. CONSTITUTION:Two containing boxes 22, 24 are vertically arranged in a heat insulation box body 18 through a back surface passage 36, a bottom space 44 and side passages 46, 46 for circulating chilled gas. Shielding members 38, 38 are arranged on opposed upper and lower surfaces of the boxes 22, 24, and a horizontal passage 40 having a predetermined size is formed. The passage 40 communicates with the passage 36. A plurality of vent holes 50 communicating with the passage 46 are opened at a front surface side separate from the passage 36 of the member 38. Part of the gas moving down in the passage 36 is brought into contact with a bottom of the box 22 and a ceiling of the box 24 to cool it while being fed into the passage 40 and discharged from the holes 50 to the passage 46. |
