直线压缩机电声转换特性的实验

发布时间：2018-01-07 16:35

本文关键词：直线压缩机电声转换特性的实验　出处：《浙江大学学报(工学版)》2016年08期 　论文类型：期刊论文

【摘要】：针对声学RC负载法研究直线压缩机电声转换特性时存在的阻抗调节范围小、阻抗调节困难等问题,提出电机负载的方法.该方法是采用一台直线电机作为被测压缩机的负载,通过改变该直线电机的外接电阻和等效电感实现不同的负载阻抗,可以方便地对直线压缩机的电声转换特性进行研究.结果表明,在平均压力为6 MPa,工作频率为60Hz,压缩机阻抗幅值为2.06×107 Pa·s/m3,阻抗相角为-17°时,压缩机效率可达84.5%.结果还表明,改变膨胀电机的外接电阻或等效电感时,压缩机不仅都能达到较广的阻抗范围,而且电声转换效率都能在某一阻抗幅值和相角值时达到最佳.
[Abstract]:According to the acoustic load impedance method to study the existence of RC electro acoustic conversion characteristics of the linear compressor small regulating range, the problem impedance adjustment difficulties, proposed method of motor load. The method uses a linear motor as the load test of the compressor, by changing the linear motor of the external resistor and inductance load impedance is different. It is convenient to the linear compressor electro acoustic conversion was investigated. The results show that the average pressure is 6 MPa, the frequency of 60Hz, compressor impedance amplitude is 2.06 x 107 Pa - s/m3, impedance angle of -17 degrees, the compressor efficiency can reach 84.5%.. The results also show that the change of external resistance or expansion of motor equivalent inductance when the compressor not only can achieve a wide range of impedance, and the electro acoustic conversion efficiency can reach the best in an impedance magnitude and phase value.

【作者单位】：中国科学院低温工程学重点实验室;中国科学院大学;
【基金】：国家自然科学基金资助项目(51476183) 北京市自然科学基金资助项目(3132034)
【分类号】：TB652
【正文快照】： 直线压缩机是回热式低温制冷机中的关键部件,可以将电功转化为声功、驱动制冷机工作.直线压缩机采用板簧或气体轴承支撑和间隙密封技术实现无磨损、无油润滑的往复运动,具有可靠性好、效率高的优点.目前,直线压缩机驱动的低温制冷机可以实现从室温[1]到极低温[2-3]的各种温度.

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