| 摘要 |
PURPOSE:To provide a low-temperature box in which direct influence of a capacity change of a cooler or influence of a defrosting operation of an evaporator is suppressed to an extremely small value and a temperature of a storage space is stabilized. CONSTITUTION:A low-temperature box comprises a heat insulation outer box 2, a heat conductive inner box 3 disposed at an interval inside the outer box to form a storage chamber 10 therein, a first blower 12 disposed in a cold gas circulating space 11 between the boxes 2 and 3, and a heat insulation partition panel 4 provided at an interval to a sidewall of the box 3. The box further comprises a cooling space 15 partitioned from the space by the panel, a cooler 18 and a second blower 21 disposed in the cooling space, and a cold gas forward passage 14 and a cold gas return passage 18 for communicating the space 15 with the space 11. |
