A Study on Noise Identification of Compressor Based on Two Dimensional Complex Sound Intensity

Two Dimensional Complex Sound Intensity를 이용한 압축기 소음원 규명에 관한 연구

  • 안병하 (LG 전자(주) 홈어플라이언스 연구소) ;
  • 김영수 (부경대학교 냉동공조공학과)
  • Published : 2000.01.01

Abstract

Sound intensity method is well known as a visualization technique of sound field or sound propagation in noise control. Sound intensity or energy flux is a vector quantity which describes the amount and the direction of net flow of acoustic energy at a given position. Especially two dimensional sound intensity method is very useful in evaluating periodic characteristics and acoustic propagation mode of noise source. In this paper, we have studied the noise source Identification, acoustic sound field analysis, and characteristics of noise source of rotary compressor and scroll compressor for air conditioner using complex sound intensity method. Also we proposed a now method of time domain analysis which is used in evaluating of position of noise source in rotary and scroll compressor in this paper This paper presents the advantage, simplicity and economical efficiency of this method by analysing the characteristics of noise source with two dimensional complex sound intensity simultaneously.

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