冻干机控制系统实现及工艺参数优化

Realizing control system of freeze-drying machine and optimising on technical parameters

真空冷冻干燥是一种使物料在低温低压下脱水的干燥工艺,具有许多优点。本文以某冻干机为研究对象,设计与开发了其控制系统并进行了相关实验。利用二次正交分析法对实验结果进行了分析,对冻干的关键参数时间、温度和真空度进行了优化。实验表明优化的参数可行。

Vacuum freeze-drying is a technical that make a material dehydrate in low temperature and low pressure, and it has many merits. A control system is designed and developed based on a certain freeze-drying machine. According to the test result, by the method of quadratic orthogonal experiment, the key parameters including time, temperature and vacuum degree of freeze-drying are analysed and optimised. The test proves the optimised parameters valid.