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FREEZE-DRYING METHOD AND APPARATUS FOR THE SAME

  • US 20130326899A1
  • Filed: 11/29/2012
  • Published: 12/12/2013
  • Est. Priority Date: 11/30/2011
  • Status: Active Grant
First Claim
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1. A heating method to objects to be dried in freeze-drying by a far infrared heater, including a step of mounting frozen objects to be dried or unfrozen objects to be dried in containers having a high absorption power of radiant heat from the far infrared heater and having a suitable thermal conductivity, or mounting the objects to be dried in containers with lids which keep atmosphere in a reduced pressure tank;

  • a step of mounting the frozen objects to be dried or the unfrozen objects to be dried which are mounted in the containers, into the reduced pressure tank under an atmospheric pressure; and

    a step of sublimating the objects to be dried in a reduced pressure state where the sublimation of the objects to be dried takes place in the reduced pressure tank through heating and heat conduction to the containers or the containers with the lids by the radiant heat of the far infrared heater disposed in the reduced pressure tank.

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