Influence of refrigerant pipe parameters on the vibration characteristics of a refrigerator

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (20) : 209-213.

KONG Xiang-qiang，CHEN Li-juan，LI Ying

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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 by 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 founded that gas column resonance could not occur with large differences between compressor excitation frequency and the gas column natural frequency, but pipe resonance exists with the pipe natural frequency in the resonance zone. For the problem of the pipe resonance, the vibration characteristics of the pipe with different length, fillet radius and support location are analyzed with the same pipe material. 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 larger with the increase in fillet radius, but the pipe resonance occurs with the first order natural frequency still in the resonance zone. The pipe natural frequency improves effectively and gets far away from the resonance zone by adding supports in different locations, and a best location exists.

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refrigerator / refrigerant pipe / vibration / modal analysis / natural frequency

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KONG Xiang-qiang，CHEN Li-juan，LI Ying. Influence of refrigerant pipe parameters on the vibration characteristics of a refrigerator[J]. Journal of Vibration and Shock, 2015, 34(20): 209-213

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