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Patent Searching and Data


Title:
VACUUM FREEZE-DRYING DEVICE AND VACUUM FREEZE-DRYING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/235459
Kind Code:
A1
Abstract:
Provided are a vacuum freeze-drying device and method with which vacuum freeze-drying can be carried out continuously in a short amount of time. This vacuum freeze-drying device (1) has an exhaust passage for carrying out vacuum suctioning, wherein a drying device (3) is provided with: a tubular section (31) provided with an inlet part and an outlet part and having a tubular shape; temperature adjustment means (30a-30j) that are provided at least three or more regions which are formed from the inlet part toward the outlet part on a peripheral portion of the tubular section (31), and the temperature of which can be controlled, and that are for adjusting the temperature of a plurality of regions (40a-40j) on the outer surface of the tubular section; a temperature control unit (8) for independently controlling the temperature of the temperature adjustment means; and a rotation unit (7) for causing the tubular section (31) to rotate. The tubular section (31) has a spiral transfer means (31a) provided continuously from the inlet part toward the outlet part, in the vicinity of an inner wall of the tubular section, and the transfer means (31a) continuously sublimates and dries frozen material while transferring the frozen material sequentially by means of the transfer means to locations corresponding to the plurality of regions inside the tubular section.

Inventors:
Morimoto Shuji (JP)
Takehara Makoto (JP)
Application Number:
PCT/JP2021/018879
Publication Date:
November 25, 2021
Filing Date:
May 18, 2021
Export Citation:
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Assignee:
MII LTD. (JP)
International Classes:
F26B5/06; F26B17/20; F26B23/10; F26B25/00
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