第一作者孔祥强男，博士，副教授，1976年生

邮箱：kxqiangly@126.com

制冷剂管道参数对冰箱振动影响特性

孔祥强，陈丽娟，李瑛

(山东科技大学机械电子工程学院，山东青岛266590)

摘要：为减小冰箱振动、降低噪声，利用Pro/Engineer软件分别建立冰箱制冷剂管道内部气柱及管道三维实体模型，用有限元分析软件ANSYS分析模态，获得气柱及管道固有频率。气柱固有频率与压缩机激发频率相差较大不会产生共振，而管道固有频率在共振区内会产生共振。在制冷剂管道材料不变条件下分析不同管道长度、弯管圆角半径及固定支撑位置对冰箱振动特性影响。结果表明，减小制冷剂管道长度会增大固有频率并逐渐远离共振区，从而避免管道共振；增加制冷剂管道弯管圆角半径，其固有频率略有增大，一阶固有频率仍在共振区内导致管道共振；在制冷剂管道不同位置增加固定支撑，能有效提高管道固有频率，使其远离共振区，且存在最佳安装位置。

关键词：冰箱；制冷剂管道；振动；模态分析；固有频率

基金项目：山东省高等学校科技计划资助项目(J11LD63)；山东省泰山学者建设工程专项经费资助项目;青岛市黄岛区科技项目(2014-1-40)

收稿日期：2014-08-01修改稿收到日期：2014-09-30

中图分类号:TB535

文献标志码：A

DOI:10.13465/j.cnki.jvs.2015.20.035

Abstract:In order to reduce the vibration and noise of a refrigerator, geometric models of the refrigerant pipe and the gas column in the pipe were created respectively by using Pro/Engineer software, and natural frequencies of the pipe and the gas column were obtained by the modal analysis based on ANSYS software. It is found that gas column resonance will not appear due to the large difference between compressor excitation frequency and the gas column natural frequency, but pipe resonance will occur when the pipe natural frequency is in the resonance zone. The vibration characteristics of the pipes mode of the same material yet with different length, fillet radius and support location were analyzed. The model analysis results show that, the pipe natural frequency increases continuously and gets far away gradually from the resonance zone with the decrease of refrigerant pipe length. The pipe natural frequency is slightly getting higher with the increase of fillet radius, however the pipe resonance will still occur with the first order natural frequency in the resonance zone. The pipe natural frequency can be improved effectively and get far away from the resonance zone by adding supports in different locations, and a best location exists.

Influence of refrigerant pipe parameters on vibration characteristics of refrigerator

KONGXiang-qiang,CHENLi-juan,LIYing(College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

Key words:refrigerator; refrigerant pipe; vibration; modal analysis; natural frequency

电冰箱作为广大家庭不可或缺的电器运行时噪声大小颇受关注，并与节能、环保同为评定家电产品质量优劣的三大要素。因而国标[1]对冰箱、空调、洗衣机、微波炉、吸油烟机及电风扇等6类家电噪声限值进行明确规定。……