小型制冷设备低压启动探析

Investigation and Analysis on Low-voltage Starting of Small Refrigeration Equipment

对小型制冷设备在RSIR、CSIR、CSR等启动方式比较基础上 ,对低电压启动进行了分析 ,提出了开发复合型启动装置的意义、基本设想及理论依据 ,并指出了复合启动模式的结构、工作原理 .通过压缩机低压启动实验 ,采用临界状态比较法及启动时间比较法 ,研究了其最佳启动电容 ,同时分析了启动继电器、热保护装置与压缩机的匹配等问题 .实验表明 ,采用复合启动模式既保护压缩机又可使其下限启动电压达 140V ,低于目前国内同类产品的下限值 187V .

Based on the comparison of small refrigeration equipment.This paper analyzes the mode of starting with low voltage.It gives the significance、assumed design and the theoretical basis of developing compound starting mode and this mode's architecture and working principle.Through experiments on the starting of compressor with low voltages,it studies the best starting capatinance by way of critical state comparison and starting time comparison.It analyzes the matching of starting relay,heat protective device and the compressor.Experiments show that compound starting mode can protect the compressor while lowering the floor level starting voltage to 140 V,lower than that of 187 V of similar products in China.