To provide a dryer capable of easily changing a height of sample loading shelves, and surely increasing a temperature of a shelf heater to a prescribed temperature even when the height of the sample loading shelves is changed.

In this vacuum dryer 1 wherein the sample loading shelves 5 integrated with the shelf heater 5a are arranged in a chamber 2 in plural stages, and the sample loading shelves 5 are heated by the shelf heater 5a to dry a sample, a power receiving-side coil 6 distributing electricity to the shelf heater 5a is integrally disposed on an end portion of the sample loading shelves 5, a power feed-side coil 7 corresponding to the power receiving-side coil 6 is disposed on an outer surface of the chamber 2, and electric power is transferred to the shelf heater 5a by electromagnetic induction from the power feeding-side coil 7 to the power receiving-side coil 6 to heat the sample loading shelves 5.

COPYRIGHT: (C)2008,JPO&INPIT