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Mathematical model of working process of oil free scroll vacuum pump
Author(s) -
Burmistrov A.,
Salikeev S.,
Raykov A.,
Fomina M.
Publication year - 2017
Publication title -
vakuum in forschung und praxis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.213
H-Index - 13
eISSN - 1522-2454
pISSN - 0947-076X
DOI - 10.1002/vipr.201700663
Subject(s) - scroll , mechanical engineering , engineering , physics , thermodynamics
Summary A mathematical model of oil free scroll machine working in vacuum conditions is considered. Differential equations and main assumptions in the model are presented. Four types of control volumes are specified. The model takes into consideration heat exchange between the pump working elements, change of clearances due to thermal deformations, and mobility of the scroll element wall in calculation of leakage. The comparison of the calculated values of the pumping speed with experimental values obtained at different rotation speed of the driveshaft is carried out.