Study on Scroll Profile Design Using Involute of Elliptic for Scroll Compressor

Abstract:

The scroll compressor has the conjugate motion of meshing by the fixed scroll and the planet scroll. Several kinds of geometrical curves can be adopted to form the scroll compressor profile such as involute of circle with variable and constant radius, algebraic spiral, and so on, to improve the performance of scroll compressor. This study proposes a new scroll profile design using elliptic involute and two-envelope method to create a new conjugate meshing scroll of variable cross section. The curve of the scroll section on both sides can be specified as an arbitrary mathematical function. First, the base scroll swept out by the central base circle. Next, the base circle translation path envelope of the planet scroll is moved by the basic involute curve. The base circle translation path envelope is the first envelope. The second envelope generated by the planet scroll conjugate profile is the fixed scroll. By using two-envelope method, the variety of conjugate scroll can be produce with the cross section and symmetrical variables for parametric design.

• Periodical: Applied Mechanics and Materials (Volume 319)
• Pages: 622-628
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.319.622
• Online since: May 2013
• Authors: Shen Jenn Hwang, Shin Tang Li, Yunn Lin Hwang, Chien Hsin Chen
• Keywords: Conjugate, Involute of Elliptic, Scroll Profiles, Two-Envelope Methods

References

[1] Lean, Creux (1905), Rotary Engine, US Patent, No. 801,182

[2] Yin-Ren Lee, Wen-Fang Wu (1996), "A study of planar orbiting mechanism and its applications to scroll fluid machinery", Mechanism and Machine Theory Vol.31, No.5, pp.705-716.

DOI: 10.1016/0094-114x(95)00116-g

[3] Yin-Ren Lee, Wen-Fang Wu (1995), "On the profile design of a scroll compressor", Journal of Refrigeration Vol. 18, No. 5, pp.308-317.

[4] Yu Chen, Nils P. Halm, Eckhard A. Groll, James E. Braun (2002), "Mathematical modeling of scroll compressors-part I: compression process modeling", Journal of Refrigeration Vol. 25, pp.731-750.

DOI: 10.1016/s0140-7007(01)00071-8

[5] Baolong Wang, Xianting Li, Wenxing Shi (2005), "A general geometrical model of scroll compressors based on discretional initial angles of involute", Journal of Refrigeration Vol. 28, pp.958-966.

DOI: 10.1016/j.ijrefrig.2005.01.015

[6] Qiang Jianguo (2010), "Study on basic parameters of scroll fluid machine based on general profile", Mechanism and Machine Theory 45, pp.212-223.

DOI: 10.1016/j.mechmachtheory.2009.08.005

[7] Jens Gravesen, Christian Henriksen (2001), "The Geometry of the Scroll Compressor", Society for Industrial and Applied Mathematics Review Vol. 43, No. 1, pp.113-126.

DOI: 10.1137/s0036144599362121