Title: Two-dimensional localisation and clearance evaluation of screw rotors

Authors: Yi-Chao Huang, Jiing-Yih Lai, Feng-Yung Lin, Yi-Li Guo

Addresses: Department of Mechanical Engineering, National Central University, Chung-Li 32001, Taiwan, ROC. ' Department of Mechanical Engineering, National Central University, Chung-Li 32001, Taiwan, ROC. ' Engineering Department, Machinery Division, Fu Sheng Industrial Co., Ltd, San-zhong 24158, Taiwan, ROC. ' Engineering Department, Machinery Division, Fu Sheng Industrial Co., Ltd, San-zhong 24158, Taiwan, ROC

Abstract: Twin screw compressors have been widely used in industry owing to their advantages. Owing to machining imperfections, it is necessary to apply clearance between main and gate rotors, which will still provide minimum clearance with lowest leakage. The aim of this study is to develop a method to analyse clearance distribution between rotors with theoretical, modified design and machined profiles. In order to evaluate contact point on rotors, a localisation algorithm was developed. The clearances were then calculated along sealing line that was originally derived from theoretical profile. The validity of the method was verified by computer simulation and experiments.

Keywords: screw compressors; screw rotors; clearance analysis; localisation.

DOI: 10.1504/IJCAT.2010.031522

International Journal of Computer Applications in Technology, 2010 Vol.37 No.1, pp.74 - 85

Received: 18 Nov 2008
Accepted: 24 Sep 2009
Published online: 08 Feb 2010 *

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