圆柱形压缩机壳体声辐射特性参数研究  

Parametric study on sound radiation from cylindrical shell of hermetic compressors

作　　者：李洪亮[1] 吴成军[1] 黄协清[1] 

机构地区：[1]西安交通大学振动噪声控制工程研究所,西安710049

出　　处：《制冷学报》2002年第4期5-9,共5页Journal of Refrigeration

基　　金：国家自然基金资助项目 (5 0 0 0 5 0 15 )

摘　　要：利用波数域法建立了在集中载荷作用下 ,压缩机壳体的波数域径向振动速度计算公式 ,进而用边界积分方程推导了压缩机壳体的远场辐射声压理论表达式。建立的壳体声辐射预估理论公式研究了制冷工质类型、壳体厚度、结构阻尼、力的作用方向、机芯等效刚性圆柱半径、壳体中心面半径等参数的变化对压缩机壳体声辐射的影响规律。研究结果对圆柱形压缩机壳体的低噪声优化设计有一定的指导意义。The formula of the radial velocity of the compressor shell under the concentrated excitation in wave number domain is developed by using wave number domain approach (WDA). Then, the analytic expressions are derived for the far field sound pressure radiating from the cylindrical shell of hermetic compressors by using Boundary Integral Equation(BIE). Based on it, the influences of parameters such as kinds of refrigerant, structural damping, direction of the force, and structural thickness, the radius of the shell and the equivalent radius of the inner structure of the compressor on the far field pressure are also investigated. This paper gives some guidelines on the optimized design of the cylindrical shell for noise reduction.

关 键 词：圆柱形压缩机 声辐射特性 壳体 制冷工质 

分 类 号：TB652[一般工业技术—制冷工程]