旋叶式压缩机工作过程模拟的研究

旋叶式压缩机以其结构简单紧凑、运转平稳、容积效率高等优点。得到了越来越广泛的应用。该文对汽车空调用旋叶式压缩机的工作过程进行了模拟,其数学模型的建立基于”任一时刻基元内工质的状态是均匀的”这样一种常用假设。在工作过程模拟的基础上,采用有限元法计算了压缩机基元在若干关键位置的热力参数分布情况。结果表明,压缩机基元内的热力参数在各个关键位置上的分布基本均匀,证明了工作过程数学模型建立的假设基本符合实际情况,可应用于工程设计及运行分析。

Working Process Model of Rotary Vane Compressor

A rotary vane compressor has many advantages such as simple construction, no eccentric rotary parts, small size and high volumetric efficiency, etc. So it is widely used in many fields. In this paper, the working process modeling of a rotary vane compressor for an automobile air conditioner is presented. The model is based on the common hypothesis: "The thermal status of the refrigerant in the chamber is uniform at any time". Based on the working process model, the distribution of the thermal parameters in the compressor chambers on several key positions is computed with Finite Element Method (FEM). It is shown that the parameter distribution in the compressor chambers is uniform on every important position. It is proved that the hypothesis for the working process model accords basically with the fact. And it could be used for engineering design and operating analysis.