| 摘要 |
<p>PURPOSE:To prevent dew-condensation and frosting when cooling is started and an electronic device is removed by dehumidifying by driving dew- condensation, frost preventive unit at the time of starting cooling, and operating a refrigerant supplying unit by the arrival of the value of a dew point sensor at a predetermined value. CONSTITUTION:A cooling command F1 is sent to a controller 10, a dew- condensation, and frosting preventive unit 8 is driven by a dehumidifier by an output (3) to dehumidify the inner chamber of a sealing box 3, a dew point temperature Td is lowered from a dew point sensor 6 by dehumidifying, (1) is output by the arrival of the value of the Td at a predetermined temperature T3 set to a dew-condensation discriminator 10A, (2) is output from an AND gate G1, and a refrigerant supplying unit 4 and an electronic device 1 are started to be operated. Further, the command F1 is stopped to set the outputs (2), (3) to '0', and the unit 4, the device 1 and the unit 8 are stopped.</p> |
