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Dynamic behavior of valve system in linear compressor based on fluid-structure interaction

Yong-sik Choi, Jun-ho Lee, Weui-bong Jeong, Il-Geun Kim
The Journal of Mechanical Science and Technology, vol. 24, no. 7, pp.1371-1377, 2010

Abstract : In refrigerator designs, the linear compressor is preferable to the recipro-type compressor, due to its higher energy efficiency. The linear compressor¡¯s valve system, however, causes significant noise, not only in the steady state but also in the transient state. To accurately predict the behavior of the suction and discharge valve system in both states, the interaction between the fluid flowing through the valves and the structural deformation of the valves needs to be understood. In the present study, the steady-state behaviors of the valve system were numerically analyzed using ADINA software, which takes fluid-structure interaction (FSI) into account. This computational analysis thereafter was experimentally validated. The effects of a pre-load of the conical compression spring on the dynamic characteristics of the valve system also were analyzed.

Keyword : Fluid-structure interaction; Linear compressor; Valve system; Dynamic behavior

 
 
 
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