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Design of the back pressure control valve for an automotive scroll compressor.

Author(s) : KOO I. H., NAM B. Y., LEE G. H.

Summary

The optimum design of back pressure chamber is one of the most important factors in designing scroll compressors because it has a great influence on the efficiency and other design parameters. The design process can be divided into 2 parts. One is obtaining the optimum pressure of the chamber and keeping it in constant value. The other is finding out the minimum inflow rate of medium with which back pressure chamber is filled. In this study the authors focus on the first step. First, they added a simple structure that can change back pressure without reassembling compressor. It makes possible to obtaining optimum back pressure. Then, they devised an equipment that the back pressure control valve assembly could be independently tested with. Spring was redesigned to decrease stiffness variation. Also sealing mechanism of back pressure control valve was improved to more effective way. As a result, it was verified that in a real mode test back pressure variation could be retained in 2.3% with discharge pressure and operating frequency varied. In addition the integrated structure of back pressure control valve is expected to contribute to effective manufacturing process.

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Details

  • Original title: Design of the back pressure control valve for an automotive scroll compressor.
  • Record ID : 2010-1834
  • Languages: English
  • Source: 2008 Purdue Conferences. 19th International Compressor Engineering Conference at Purdue & 12th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Publication date: 2008/07/14

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