Equivalent Simple Model of Complicated Bypass Leakages in Scroll Compressor

DOI
  • ANAMI Keiko
    Department of Mechanical Engineering, Osaka Electro-Communication University
  • ISHII Noriaki
    Department of Mechanical Engineering, Osaka Electro-Communication University
  • TSUJI Takuma
    Mayekawa Mfg. Co., Ltd.

Bibliographic Information

Other Title
  • スクロール圧縮機の複雑なバイパス漏れの等価簡単モデル

Abstract

<p>This study presents a new idea for an empirical method to calculate the bypass leakage mass flow rate along the tip seal in scroll compressors. A bypass leakage test model was precisely developed to be compatible with a practical scroll compressor with large cooling capacity. Detailed tests of pressure decay in a pressurized vessel due to the bypass leakages were conducted with dry refrigerant gas R410A. The measured pressure decay characteristics were subsequently simulated using the Darcy-Weisbach equation with an empirical friction factor determined in our previous study for the leakage flow through axial clearances. In the present simulations of the measured pressure decay, the complicated flow patterns through bypass clearances were decomposed into two thin representative rectangular cross-section leakage passes, one with the effective mean width and another with the effective mean length. Empirical values of the effective pass width and length were determined so that the measured pressure decays are well predicted by the calculations. As a result, the bypass leakage flow rate along the tip seal in scroll compressors can be calculated by a very simple scheme introducing the parallel leakage passes with a thin rectangular cross-section.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390282763119789184
  • NII Article ID
    130007628941
  • DOI
    10.11322/tjsrae.17-41
  • ISSN
    2185789X
    13444905
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

Report a problem

Back to top