| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily keep the inside of a container at a desired temperature, while suppressing energy consumption. <P>SOLUTION: One end of a natural circulation coolant circuit 110 is arranged in a heat insulation container 2, and the other end is arranged out of the heat insulation container 2. An outer cover 101 and an inner cover 102 cover the other end of the natural circulation coolant circuit 110, which is arranged out of the heat insulation container 2. A fan 103 is arranged on an opening 101a of the outer cover 101. When the fan 103 is operated, air enters from an opening 101b, and the natural circulation coolant circuit 110 is cooled by an air current. When a temperature difference is generated thereby between both ends of the natural circulation coolant circuit 110, heat conduction is generated from inside the heat insulation container 2 to the outside of the heat insulation container 2 through the natural circulation coolant circuit 110. When the fan 103 is stopped, the air inside the outer cover 101 is warmed, and heat radiation from the natural circulation coolant circuit 110 is stopped, to thereby stop heat conduction. <P>COPYRIGHT: (C)2011,JPO&INPIT |
