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为了研究带经济器的涡旋压缩机制冷循环,从压缩机的实际工作过程出发,结合制冷系统的部件特点建立了带经济器的涡旋压缩机制冷循环的数学模型,分析了辅助回路使用热力膨胀阀系统的各种情况下的动态特性。仿真结果表明:最合理的开孔位置在吸气腔刚刚闭合处,此时可以最大限度保证系统在低温工况时的实际制热性能,同时较好兼顾系统的经济性。开孔位置在一定范围内变化对于系统的经济性、安全性影响并不明显,但系统在低温工况下的制热量将有明显变化。该研究对于带经济器的螺杆压缩的准二级系统同样适用。
In order to study the refrigeration cycle of a scroll compressor with an economizer, the mathematical model of a scroll compressor with an economizer is established based on the actual working process of the compressor and the characteristics of the components of the refrigeration system. Dynamic characteristics of the expansion valve system under various conditions. The simulation results show that the most reasonable opening position in the suction chamber just closed at this time you can maximize the system at low temperature conditions to ensure the actual heating performance, while taking into account the system economy. The location of the hole changes within a certain range for the economy and safety of the system is not obvious, but the system in the low temperature conditions will have significant changes in heating capacity. The study also applies to quasi-two-stage systems with screw-compressor compression.