小型汽车空调系统实验台的设计-本科毕业论文教案.doc

中国计量学院 本科毕业设计（论文） 小型汽车空调系统实验台的设计 Design on Small Automotive Air Conditioning System Test System 2013年05月 小型汽车空调系统实验台的设计 摘要：如今，汽车空调的使用已经普及，而随着科技水平的提高，人们对汽车空调的要求也越来越高，但在提高汽车空调的综合性能的同时也出现了许多问题。根据汽车空调H型热力膨胀阀生产厂家提供的信息，膨胀阀在某些特殊情况下会出现“啸叫”的现象。 因此，本文主要针对这一问题设计一台小型汽车空调实验台，用以研究H型热力膨胀阀“啸叫”的问题。作为一台综合型的实验台，该实验台可以用于以下实验： 用以模拟出膨胀阀“啸叫”的状态并分析这种状态时汽车空调系统各部件特别是膨胀阀的运行参数； 用以教学演示，分析汽车空调有别于普通空调的特性； 模拟汽车空调启动与关闭以及汽车发动机变速时空调的运行状态，并予以记录，用以分析变转速时汽车空调各部件的工作状况； 作为一台综合性的实验台，在变工况时对制冷系统的制冷量和冷凝器性能进行测试研究。 关键词：汽车空调；实验台；噪音； 中图分类号：TB657 Design on Small Automotive Air Conditioning System Test System Abstract:Today,the forthputting of automotive air conditioning has been universal,and with the development of the Science and Technology,people’s requirements on automotive air conditioning are also getting higher and higher,but as the overall performance of automotive air-conditioning is improving,there have been many problems at the same time.According to information provided by Automotive Air Conditioning H-type thermal expansion valve manufacturers,the expansion valve in some special cases will generate the phenomenon of howling. Therefore,this paper will mainly design a small automobile air conditioning bench to solve this problem of the whistle issue and to study the H-type thermal expansion valve .As a comprehensive test-bed, the bench can be used in the following experiments: 1、For simulation,analysis of the whistle issues of automotive air conditioning H-type thermal expansion valve; For teaching demonstration,analysis of automotive air conditioning,and it’s difference from ordinary air conditioned car characteristics; Analog automotive air conditioning and automotive engine in the conditions of startup and shutdown and the automotive air conditioning‘s operating status when the engine is startup.At the same time get the record and analysis of the automotive air conditioning parts working conditions when the speed is variable; 4、This bench can be used to do the research of cooling capacity test of