冻干机直冷式与间冷式捕水器综合性能的比较

在真空冷冻干燥机（以下简称冻干机）中，有个重要的部件“捕水器”。国际国内绝大部分冻干机制造商均设计采用直接制冷式（以下简称直冷式）捕水器，也有少数冻干机制造商设计采用间接制冷式（以下简称间冷式）捕水器。上述两种捕水器性能参数很少见诸报道。近几年，上海远东制药机械总厂冻干设备厂对其进行了综合性能的研究比较，结论是两者各有优缺点，但综合性能还是直冷式更优。

Comparison of Integrated Performance of Freeze Drier Water Catchers by Direct and Indirect Cooling

Water condenser is a main part of vacuum freeze dryer. Most of international manufacturers use direct-cooled condenser, and few of them adopt indirect-cooled condenser. However, the reports on research and development of these two types of condensers are very limited. In recent years, Shanghai Yuandong pharmaceutical machinery general factory has done the research to compare them .We found that the comprehensive performance of a direct-cooled type was better