Title:
凍結乾燥方法及び凍結乾燥装置
Document Type and Number:
Japanese Patent JP7402096
Kind Code:
B2
Abstract:
To provide a freeze dry method by which ice crystals (ice particles) are substantially uniformly led into all containers which are set within a freeze dry chamber, and a freeze dry device FM.SOLUTION: In a freeze dry method including: a freeze step of setting a container Gc filled with a liquid-state dried material Dm within a freeze dry chamber 1a which can be vacuumed, and freezing the dried material; and a dry step of drying the frozen dried material in a state where the inside of the freeze dry chamber is vacuumed, the freeze step includes: a first step of setting the inside of the freeze dry chamber to an atmospheric pressure and depositing frost in which ice crystals are coagulated, on a surface of a coolant 6 disposed within the freeze dry chamber; a second step of vacuuming the inside of the freeze dry chamber to a predetermined pressure equal to or lower than 10 kPa; and a third step of introducing a gas at a pressure equal to or higher than the atmospheric pressure from a gas introduction port 11 of a gas introduction line 12 which is provided inside of the freeze dry chamber oppositely to the coolant in a state where the liquid-state dried material is excessively cooled.SELECTED DRAWING: Figure 1
Inventors:
Tsuyoshi Yoshimoto
Tomomitsu Ozeki
Youichi Ohinata
Tomomitsu Ozeki
Youichi Ohinata
Application Number:
JP2020055026A
Publication Date:
December 20, 2023
Filing Date:
March 25, 2020
Export Citation:
Assignee:
ULVAC, Inc.
International Classes:
F26B5/06
Domestic Patent References:
| JP2016125731A | ||||
| JP2017020738A |
Attorney, Agent or Firm:
Seika Patent Attorney Corporation