冰箱压缩机低速抖动影响因素探究  

Study on the influencing factors of low-speed jitter of refrigerator compressors

作　　者：陈新杰 张巍 胡鹏翔 葛成伟 高军 杨鑫 CHEN Xinjie;ZHANG Wei;HU Pengxiang;GE Chengwei;GAO Jun;YANG Xin(Anhui Meizhi Refrigeration Equipment Co.,Ltd.,Hefei 230031)

机构地区：[1]安徽美芝制冷设备有限公司,安徽合肥230031

出　　处：《家电科技》2024年第5期92-98,共7页Journal of Appliance Science & Technology

摘　　要：为了满足冰箱高容积率的要求,变频往复式压缩机越来越趋于小型化,若激励源平衡不足或隔振措施不当,会造成压缩机在低转速振动大的问题。通过分析振动激励源和传递路径,发现不平衡力是造成压缩机低速抖动的主要原因。明确了内排气管、座簧和脚垫等部件对振动的传递存在至关重要的作用,其中压缩机脚垫的侧向刚度不足易导致压缩机低转速振动大。通过动平衡优化及脚垫优化设计,实现了低转速下X、Y、Z三个方向的振动均满足客户测试标准,同时在振幅较大的X方向,低转速振动下降31.8%~55.9%,成功解决压缩机在低转速下振动大的问题,提升了小型化变频压缩机在低转速下匹配冰箱系统的适配性。In order to achieve the requirement of high volume rate of refrigerators,frequency conversion reciprocating compressors are becoming more and more miniaturized.If the excitation source is not balanced or the vibration isolation measures are improper,it will cause problems such as large vibration of the compressor at low speed.By analyzing the vibration excitation source and transmission path,it is found that the unbalanced force is the main reason for the low-speed jitter of the compressor.It is clear that the components such as the inner exhaust pipe,the seat spring and the foot pad play an important role in the transmission of vibration.The insufficient lateral stiffness of the compressor foot pad can easily lead to large vibration of the compressor at low speed.Through dynamic balance optimization and pad optimization design,the vibration of X,Y and Z directions at low speed meets the customer test standards.At the same time,in the X direction with large amplitude,the vibration at low speed decreases by 31.8%~55.9%.The problem of large vibration of compressor at low speed is successfully solved,and the adaptability of miniaturized frequency conversion compressor to refrigerator system at low speed is improved.

关 键 词：小型化变频压缩机 低速抖动 不平衡惯性力 传递路径 

分 类 号：TM925.21[电气工程—电力电子与电力传动] TH457[机械工程—机械制造及自动化]