The number of tray of drying can capacity ratio accommodations is many, heating efficiency being satisfactory, energy consumption of dehydration quantitative ratio is little, the freeze drying device whose production expense of dehydration quantitative ratio is inexpensive is offered. The multi-stage heating board body 15 which necessary distance connection separation motion possibly was formed, with upper wheel 25 upper heating board 40 in the guide rail vis-a-vis the heating board 40 of the lower position, convoluting on the rail with lower part wheel, 28 inside and outside dry can 12 movement distribution facilities it is possibly done, moving on ascent and descent functional attaching support stand 35 where inside dry can 12 sublimation dehydration is promoted by the approach of heating board, 40 after drying end provides in the dry can 12 front, while falling, heating board 40 interval alienating to the floor face with gravity, the floor faceSo tray taking in and out and washing etc of heating board 40 being easily execution possible, at the same time the device inexpensive it can produce shortly in period.乾燥缶容積比のトレイ収容数が多く、加熱効率が良好で、脱水量比のエネルギー消費が少なく、脱水量比の製作費が低廉なフリーズドライ装置を提供する。上段の加熱盤40が下段の加熱盤40に対して所要距離接離動可能に形成された多段加熱盤体15が、上部車輪25でガイドレールに懸下され、下部車輪28でレール上を転動して乾燥缶12内外を移動可能に配設され、乾燥缶12内では加熱盤40の接近により昇華脱水が促進され、乾燥終了後は乾燥缶12前方に設けた昇降機能付支持台35上に移動して床面まで降下する間に、重力によって加熱盤40間隔が離間して、床面でのトレイ出し入れ、加熱盤40の洗浄等が容易に実施可能で、装置が低廉且つ短期間に製作できる。
