| 摘要 |
PURPOSE:To improve efficiency in installing an inner box having a good heat conductivity within an outer box in spaced relation in a low temp. storage. CONSTITUTION:An inner box having a good heat conductivity is installed within an outer box 2 at predetermined spaces to form a storing chamber 10 therein. A circulation of chilled air is produced between the outer box 2 and the inner box 3 to indirectly cool the storing chamber 10. The space between the side walls 2C-2F of the outer box 2 and the side walls 3C-3F of the inner box 3 is retained by mounting devices 32. The mounting device 32 is provided at one end with a locking projection 33 engaged with a locking hole formed in each of the side walls 3C-3F of the inner box 3 and a supporting piece 34 for holding each side wall thereof between itself and the locking projection 33 and provided at the other end with a contact wall 37 secured in contact with each of the side walls 2C-2F of the outer box 2. |
