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Research of Outer and Inner Parts for Reducing Noises in Rotary Compressors

[+] Author Affiliations
Yan Gao, Haifeng Zhang, Li Cong, Zisi Huang, Qiao Geng

Shanghai Hitachi Electrical Appliances Company, Ltd.

Paper No. IMECE2005-80653, pp. 271-275; 5 pages
doi:10.1115/IMECE2005-80653
From:
  • ASME 2005 International Mechanical Engineering Congress and Exposition
  • Noise Control and Acoustics
  • Orlando, Florida, USA, November 5 – 11, 2005
  • Conference Sponsors: Noise Control and Acoustics Division
  • ISBN: 0-7918-4225-8 | eISBN: 0-7918-3769-6
  • Copyright © 2005 by ASME

abstract

With the requirement of low noises in the airconditioner marketing, noise problems have been becoming an important task in the design of compressors. In this paper, the achievements of reducing compressor noises in our company are introduced and the impacts of outer and inner parts of the compressor, such as case’s thickness, foot’s shape and muffles, are discussed. Kinds of methods are used. Noise resources and the frequency of peak value are analyzed using theoretical calculation of professional software, such as CAE and SYSNOISE and phonometry of special instruments. On the basis, some modifications have been adopted. Finally the result of experiments shows that the noise of compressors reduces about 7 to 8 dBA.

Copyright © 2005 by ASME

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