| 摘要 |
PURPOSE:To cool uniformly outer surface of an inner box, to minimize containing volume loss of a deep part and to enable an efficient housing of long goods by a method wherein a duct plate formed in a recess shape in both side inner walls of a heat-insulating box is provided and a duct partition to partition a space between the duct plate and an inner box is arranged to be aligned with the surfaces of the inner walls. CONSTITUTION:A duct plate 20 shaped in a recess in a heat-insulating member 8c layer part of both side inner walls 8b of a heat-insulating box 8 is arranged, so that a duct partition 21 to partition a space between the duct plate 20 and an inner box 14 is aligned with inner wall surfaces, and a space on the heat- insulating member 8c side is made a return air passage. It is also possible that a part of a heat-insulating wall is employed effectively as an air passage by surrounding the inner box 14 from the both sides and by using the inner box 14 side as a discharge air passage. Thus, a containing volume loss can be minimized, a reduction of depth dimension of the inner box 14 can be prevented, and therefore, long goods can be housed efficiently. |
