一、概述冷冻真空干燥是制冷技术的重要应用领域之一,它是随着制冷技术、真空技术以及电子技术的发展而发展的,也可以说是这三方面技术的综合应用。干燥的方法很多,如晒、烘干、煮干、喷雾干燥、真空干燥等;但这些干燥都是在摄氏零度以上甚至更高的温度下进行的。干燥之后的产品一般是体积缩小,质地变 I. Overview Frozen vacuum drying refrigeration technology is one of the important applications, it is with the refrigeration technology, vacuum technology and the development of electronic technology and development, it can be said that the three aspects of the comprehensive application of technology. There are many ways to dry, such as drying, drying, boil dry, spray drying, vacuum drying, etc .; however, these drying is carried out at temperatures above zero and above zero. After drying the product is generally reduced volume, texture change