Title:
DRY STATE MONITORING DEVICE OF DRIED MATERIAL APPLIED TO FREEZE DRYER, AND DRY STATE MONITORING METHOD
Document Type and Number:
Japanese Patent JP2015102317
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a dry state monitoring device for a freeze dryer that can monitor the dry state of a dried material in a primary dry step and a secondary dry step without using a temperature sensor, and can perfectly eliminate the risk that the dried material collapses, and provide a dry state monitoring method.SOLUTION: A sequencer PLC controls dry chamber vacuum Pdc to a setting value in both of a primary dry step and a secondary dry step, and calculates a sublimation speed Qm (dehumidification speed Qm' in the secondary dry step), an average bottom component temperature Tb and an average sublimation surface temperature Ts in this order. The calculated sublimation speed Qm (dehumidification speed Qm'), average bottom component temperature Tb and average sublimation surface temperature Ts are recorded in recording means e.
Inventors:
SAWADA HIROYUKI
TONEGAWA KAZUNORI
HOSOMI HIROSHI
IKEDA YASUHIRO
TONEGAWA KAZUNORI
HOSOMI HIROSHI
IKEDA YASUHIRO
Application Number:
JP2013245411A
Publication Date:
June 04, 2015
Filing Date:
November 27, 2013
Export Citation:
Assignee:
KYOWA SHINKU GIJUTSU
International Classes:
F26B5/06; F26B21/10; F26B25/00
Attorney, Agent or Firm:
Patent Business Corporation Takewa International Patent Office