从工程实用的角度出发,对氟利昂螺杆双机配组制冷机组的制冷设计和控制设计进行了讨论,给出了防止高压级压缩机吸气温度过高、油温过低、压缩机电动机过热等的技术措施,以及双机配组制冷机组的控制方法。所提出的设计方案简单可靠,能满足工程需求,为螺杆双机配组制冷机组的制造和推广应用提供了依据。 From engineering practical point of view, the refrigeration design and control design of the freon screw twin-machine refrigeration unit are discussed, given is to prevent high-pressure compressor suction temperature is too high, the oil temperature is too low, the compressor motor overheating, etc. Technical measures, as well as double machine with a group of refrigeration unit control methods. The proposed design is simple and reliable, which can meet the engineering requirements and provide the basis for the manufacture and promotion of the screw twin-machine cooling unit.