摘要
本文以一款噪声振动较大的压缩机支撑结构为载体,采用噪声源分析、模态试验和模态仿真的方法,分析其原因为压缩机支撑底板在65～68Hz范围内产生的共振,通过改变压缩机支撑底板的刚度、质量和约束等参数,使其一阶固有频率达到115Hz,避免因变频压缩机宽工作频率下所产生的共振问题,也显著降低了整机运行时的振动,整机降噪约1.1 dB(A)。
In this paper,a compressor support structure with large noise and vibration is used as research object.The methods of noise source analysis,modal test and modal simulation are adopted to analyze its reason that is the resonance of the compressor support bottom plate in the range of 65~68 Hz.By changing the stiffness,quality and constraints of the compressor support bottom plate,the first natural frequency of the compressor reaches 115 Hz so as to avoid the resonance in wider work condition of variable frequency compressor,the vibration of the whole machine is also significantly reduced,and the noise reduction value is about 1.1 dB(A).
出处
《日用电器》
2019年第2期18-23,共6页
ELECTRICAL APPLIANCES
关键词
变频压缩机
振动
噪声
frequency conversion compressor
vibration
noise
