| 摘要 |
PURPOSE:To facilitate the formation of cold air passages, by previously making the cold air passages in heat insulator slabs and placing the slabs in a partition shelf and between an inner and an outer boxes and connecting the passages to blow-off ports and suction ports and fixing a foamed heat insulator around the cold air passages. CONSTITUTION:A heat insulator slab 12a made of foamed polystyrol is placed in the partition shelf 9 and has a cold air passage whose one end if connected to the suction ports 13, 14 of a freezing chamber 7 and a cold storage chamber 8 and whoes other end is connected to a cold air port 15 under a cooler. Another heat insulator slab 12b has a cold air passage whose one end is connected to a cold air port 16 over the cooler 10 and whose other end is connected to the blowoff port 17 of the cold storage chamber 8. These heat insulator slabs are placed in the partition shelf and between the inner and the outer boxes. The foamed heat insulator is fixed in notches of the slabs. The cold air passages can thus be formed for the integrated inner box without deteriorating the heat-insulating property. |
