| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for drying an object to be dried in freeze dry and its freeze dry drying device in which completion of drying is detected with high accuracy.SOLUTION: This invention relates to a method for drying an object to be dried in freeze dry characterized in that a frozen object 1 to be dried is frozen after the object is loaded in a vessel 2 with a high absorption power of radiant heat generated by a far-infrared heater 12 and with a superior heat conductivity, several vessels are loaded at a pressure reduction tank 6 and after the pressure in the pressure reduction tank is reduced to such a pressure as one in which sublimation occurs at the object to be dried, the dried object loaded vessels are heated by the far-infrared heater to generate heat conduction in the object to be dried from the vessels, temperatures of the surfaces of the vessels are measured by a thermocouple 3 under a pressure in the pressure reduction tank to cause sublimation at the object to be dried and dry it, upon recognition that temperature setting where the surface temperatures of the vessels do not generate any composition damage reaches up to a specified temperature ranging from 30°C to 90°C in response to the type of the object to be dried, the pressure reduced state is returned back to atmospheric pressure to complete the drying step.</p> |
