Abstract: Spiral design of scroll compressor plays an important role in compressor performance and reliability. In order to study the advantages of algebraic spirals, the meaning of algebraic spirals and wall thickness can be easily understood through geometric derivation and principle introduction. Through the theoretical calculation and experimental comparison of the algebraic spiral scroll product and the circular involute scroll product, it is concluded that the algebraic spiral has some obvious advantages. Algebraic spiral is a variable wall thickness structure that enhances the reliability by changing the vortex strength. Under certain conditions of inspiratory volume, compressor performance can be improved.

Key words: Algebraic spiral, Enveloping line, Scroll compressor