Design methodology and geometric modeling of complete meshing profiles for scroll compressors. (July 2018)

• Record Type: Journal Article
• Authors: Wang, Jun; Liu, Qiang; Cao, Chenyan; Wang, Zengli; Li, Qiang; Qu, Yan
• Is Part Of: International journal of refrigeration. Volume 91(2018)
• Page Start: 199
• Page End: 210
• Publication Date: 2018-07
• Subjects: Scroll compressor -- Complete meshing profile -- Design methodology -- Modeling -- Modified wrap; Compresseur à spirale -- Profil de maillage complet -- Méthodologie de conception -- Modélisation -- Enroulements modifiés; Refrigeration and refrigerating machinery -- Periodicals; 621.56
• DOI: 10.1016/j.ijrefrig.2018.05.011
• Languages: English
• ISSNs: 0140-7007

Abstract

Highlights: A novel design method is proposed for constructing the CMPs of scroll compressors. The right midline is employed to describe the characteristics of modified wraps. The relationships of all parameters for three CMPs modification are derived. Only one or two geometric parameter are independent for the three modified CMPs. Numerical simulations of the three CMPs are conducted. Abstract: A novel design methodology has been proposed based on the equidistant curve approach for constructing the complete meshing profiles (CMPs) of scroll compressors. The CMPs, including the peripheral profiles and central profiles for both the orbiting and fixed scrolls, can be generated simultaneously by offsetting the midline in the convex and concave direction. Three examples of the CMPs, named the circular arc modified wrap, circular arc add line modified wrap and asymmetric circular arc modified wrap, have been designed and illustrated by using the proposed design method. Geometric models of these three CMPs are established. Effects of geometric parameters of the modified wrap on performance of the scroll compressor are analyzed. The discharge pressure under the same suction volume of the scroll compressors with these three modified wraps are compared using numerical simulation. Results show that the discharge pressure of the circular arc modified wrap is bigger than that of the circular arc add line modified wrap with the same conditions, and the symmetric wrap is better than the asymmetric wrap in terms of the compression efficiency. The proposed design method is convenient to design new types of the advanced CMPs with better thermal and mechanical properties for scroll compressors.