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一、概述螺杆压缩机应用于制冷工业仅十多年的历史,它属于容积型的机械,由于结构简单、效率高、运转平稳可靠,具有往复式和离心式制冷机的许多特点,因而发展极为迅速。目前瑞典、丹麦、日、美等国均有成套系列产品,产冷量范围30,000—4,000,000大卡/时。除陆用外也广泛应用于船舶上,其趋势是以螺杆式替代往复式。美国Dunham-Bush公司发展了一种半封闭螺杆式制冷机,它的产量佔整个螺杆式制冷机的85％以上,其外形如图1所示,图2为其性能曲线。
First, an overview Screw compressor used in the refrigeration industry only ten years of history, it belongs to the volume of type of machinery, due to simple structure, high efficiency, stable and reliable operation, with reciprocating and centrifugal chiller many features, and thus extremely rapid. At present, Sweden, Denmark, Japan, the United States and other countries have complete sets of products, production capacity range of 30,000-4,000,000 kcal / h. In addition to land use is also widely used in ships, the trend is to replace reciprocating reciprocating screw. Dunham-Bush Company of the United States has developed a semi-enclosed screw refrigerator, its production accounted for more than 85% of the screw-type refrigerator, the shape shown in Figure 1, Figure 2 is its performance curve.