| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cooler for a freezer provided with a plurality of compressors in the freezer, that can control the plurality of compressors, using the other controller, even when one controller is troubled, by connecting each controller to each compressor, and can keep an ultralow temperature all the time, to store safely a cell or the like. <P>SOLUTION: The two controllers 11, 21 having two plugs are constituted in an inside of the freezer 10, another compressors 15, 25 are connected respectively to the respective controllers 11, 21, separate evaporators 16, 26 are connected respectively to the compressors 15, 25, the two compressors 15, 25 are controlled separately by the two controllers 11, 21, under a usual operation state, the compressor controlled by the one controller is controlled by the other controller, when the one controller is not usable, and the two compressors are usable all the time in the cooler for the freezer. <P>COPYRIGHT: (C)2012,JPO&INPIT |
