IIR document

New wrap profile for scroll type machines.

Author(s) : TOJO K., UEDA H.


A new type of scroll wrap profile formed by an involute based on a varying radius circle has been developed. The scroll wrap thickness can be changed gradually with the involute angle. More freedom is achieved in the design of scroll wrap in the area of displacement volume, built-in volume ratio, wrap thickness, and so on. This new wrap profile is expected to contribute to further improvements in scroll compressors.

Available documents

Format PDF

Pages: 515-521

This document is to be digitised and will be available within 10 working days

  • Public price

    20 €

  • Member price*


* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).


  • Original title: New wrap profile for scroll type machines.
  • Record ID : 1996-0839
  • Languages: English
  • Source: For a Better Quality of Life. 19th International Congress of Refrigeration.
  • Publication date: 1995/08/20
  • Document available for consultation in the library of the IIR headquarters only.


See other articles from the proceedings (488)
See the conference proceedings