螺杆式压缩机具有转速高、体积小、重量轻、效率高、运转平稳、可靠性好等等优点,已在动力、化工、石油、冶金、制冷……等各领域中得到越来越广泛的应用,特别是在制冷工程中,国外有人认为在10-100万大卡/小时以至更大冷量范围应用螺杆式制冷机较为理想,并且在此范围内已有取代其他型式制冷机的趋势。自1934年螺杆压缩机问世以来,随着制造技术,计算技术的进展已有了很大的改进,特别是近10年来,在转子型线设计、加 Screw compressor with high speed, small size, light weight, high efficiency, smooth operation, good reliability, etc., has been in the power, chemical, petroleum, metallurgy, refrigeration ... ... and other areas are getting more and more Application, especially in the refrigeration engineering, foreign people think that the application of screw chillers in the range of 10-100 million kcal / hour and even larger cooling range is ideal, and in this range has been the trend to replace other types of chillers. Since the advent of screw compressors in 1934, with the manufacturing technology, advances in computing technology have been greatly improved, especially in the past 10 years, in the rotor design, plus