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真空冷冻干燥机是真空与制冷技术结合应用的典型产品之一。用它干燥热敏性物品,药品、食品可以防止氧化,实现色、味、香、营养不变的良好境况。简单介绍了真空冷冻干燥机的组成,真空冷冻干燥的典型工艺;论述了真空冷冻干燥箱的结构、搁板的结构设计;真空系统的特点及选择方法,水蒸汽凝结器的设计方法;单级、双级、复叠式制冷系统的原理及选用原则,设计时需要计算的参数;加热与自动控制系统的设计要求;最后,通过介绍日本真空冷冻干燥机的现状、找出我国设计制造真空冷冻干燥机的努力方向。
Vacuum freeze-drying machine is a vacuum and refrigeration technology combined with the typical products. Use it to dry heat-sensitive items, medicines, food can prevent oxidation, to achieve color, taste, fragrance, nutrition, good condition. The composition of the vacuum freeze-dryer and the typical process of vacuum freeze-drying are briefly introduced. The structure of the vacuum freeze-drying oven, the structure design of the shelf, the characteristics and selection of the vacuum system, the design method of the water vapor condenser, , Two-stage, cascade refrigeration system principles and selection principles, the design parameters need to be calculated; heating and automatic control system design requirements; Finally, by introducing the status quo of Japan’s vacuum freeze-drying machine, to find China’s design and manufacture of vacuum freezing Dryer direction of efforts.