| 摘要 |
PURPOSE:To make smooth water flow for prevention of freezing as well as improve cooling efficiency by connecting a blow-off outlet of a fan apparatus with a fan duct opening toward lower and upper and lower container boxes, and opening the other end of a cold air feedback duct, whose one end opens toward a lower part of the upper container box, toward the upper part of drain pan. CONSTITUTION:Cold air blasting from a cooler 21 into an upper container box 2 is achieved by incorporation of cold air by an fan apparatus 23 to a lower fan duct 27 and an upper fan duct 41 and by sucking of a back surface part of the upper fan duct 41 by a fan apparatus 44. Cold air blown off from a blow-off outlet 43, and allowed to flow down and accumulated on the lower portion of an upper container box 2 is guided toward an upper feedback duct 42. Due condensed on the inner surface of the upper container box 2 and allowed to flow down or water spilled out from contained articles in the box 2 is accumulated on the bottom surface of the box 2 and allowed to flow from a cold air guide passage 45 to the upper feedback duct 42, and further allowed to flow down from a lower feedback duct 28 to a drain pan 26. The water accumulated on the due receiver dish 26 is discharged to an evaporation dish 32 through a discharge pipe 33. The cold airs flowing through the upper and lower feedback ducts 42, 28 smoothly flow and are discharged without being frozen because it is one flowing through the interior of the upper container box 2 and is at relatively high temperature. |
