摘要
在某款家用空调室外机项目开发阶段的模拟运输扫频振动实验中,电子膨胀阀出液管根部出现断管现象,通过有限元仿真分析,原方案在77Hz频率处电子膨胀阀组件存在整体上下模态,是导致断管的主要原因。针对此断管问题,提出了加强管焊接位置的优化方案,仿真得出优化后在实验频率范围内未出现整体上下模态,且在原断管位置处的应力相比原管路方案降低了73.1%。经实验验证,该加强管优化方案有效,可避免该款机型的电子膨胀阀出液管断管问题。
In the simulation transportation sweep frequency vibration experiment of a household air conditioning outdoor unit project in the development stage,the phenomenon of tube breaking occurred at the root of the liquid outlet pipe of the electronic expansion valve.Through finite element simulation analysis,it was found that the electronic expansion valve assembly in the original scheme had an overall up and down mode at the frequency of 77 Hz,which was the main cause of tube breaking.In order to solve this problem,an optimization scheme to strengthen the welding position of the pipe is proposed.The simulation results show that no overall up and down modes appear within the experimental frequency range after optimization,and the stress at the original broken pipe position is reduced by 73.1%compared with the original pipe scheme.The experimental results show that the reinforced pipe optimization scheme is effective and can avoid the problem of broken pipe of the electronic expansion valve outlet pipe of this model.
作者
穆晓佳
单联瑜
吴俊鸿
彭光前
夏增强
MU Xiaojia;SHAN Lianyu;WU Junhong;PENG Guangqian;XIA Zengqiang(Xiaomi Technology(Wuhan)Co.,Ltd.,Wuhan,430000)
出处
《家电科技》
2023年第4期52-56,62,共6页
Journal of Appliance Science & Technology
关键词
家用空调
室外机
模拟运输
扫频振动
断管
Household air conditioning
External machine
Simulated transportation
Sweep frequency vibration
Broken tube
