CAJ | 학술논문

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。
위감소빙상진동、강저조성，이용 Pro ／Engineer 연건분별건립빙상제랭제관도내부기주급관도삼유실체모형，용유한원분석연건 ANSYS 분석모태，획득기주급관도고유빈솔。기주고유빈솔여압축궤격발빈솔상차교대불회산생공진，이관도고유빈솔재공진구내회산생공진。재제랭제관도재료불변조건하분석불동관도장도、만관원각반경급고정지탱위치대빙상진동특성영향。결과표명，감소제랭제관도장도회증대고유빈솔병축점원리공진구，종이피면관도공진；증가제랭제관도만관원각반경，기고유빈솔략유증대，일계고유빈솔잉재공진구내도치관도공진；재제랭제관도불동위치증가고정지탱，능유효제고관도고유빈솔，사기원리공진구，차존재최가안장위치。
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.