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Technical Briefs

General Geometrical Model of Scroll Compression Chamber for Scroll Fluid Machine

[+] Author and Article Information
Qiang Jianguo

School of Mechano-Electronic Engineering, Lanzhou University of Technology, 287 Langongping Road, 730050 Lanzhou, Chinaqiangjianguo@lut.cn

J. Fluids Eng 132(1), 014501 (Dec 15, 2009) (4 pages) doi:10.1115/1.4000647 History: Received April 05, 2008; Revised October 25, 2009; Published December 15, 2009

For a scroll fluid machine with an arbitrary number of scroll wraps on its individual scroll, the phase difference between adjacent scroll profiles on one scroll is defined as the characteristic angle of the scroll. Based on general profile theory, a scroll pitch line is defined as of A-type with which the outer profile of orbiting scroll and the inner profile of fixed scroll can be formed. Another scroll pitch line is defined as B-type with which the inner profile of orbiting scroll and the outer profile of fixed scroll can be formed. The scroll compression chambers corresponding to the pitch lines of A-type and that of B-type are defined as compression chambers of A-series and B-series, respectively. Then the general geometrical model of scroll compression chamber is set up. It can demonstrate the deforming, opening, and vanishing process of all scroll chambers.

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Copyright © 2010 by American Society of Mechanical Engineers
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Figures

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Figure 1

Scroll wraps of multiwrap scroll

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Figure 2

Normal and tangential components of curve

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Figure 3

Pitch lines and scroll profiles

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Figure 4

Scroll compression chambers

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Figure 5

Width of scroll compression chamber

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