Open AccessEffectiveness enhancement of non-contact vacuum pumps working process
Author(s) -
А. В. Бурмистров,
A. Raykov,
А. А. Исаев,
S. Salikeev
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1799/1/012003
Subject(s) - involute , rotor (electric) , mechanical engineering , control theory (sociology) , leakage (economics) , process (computing) , mechanics , point (geometry) , minification , mathematics , engineering , computer science , geometry , physics , mathematical optimization , control (management) , artificial intelligence , economics , macroeconomics , operating system
Three options of rotor profiles of Roots vacuum pump are considered: elliptic, circular, and involute. Rotor profiles are drawn in the same housing and are analyzed from point of view of backward leakage minimization through inter-rotor channel and geometric pumping speed increase. It is shown that coefficient of working volume use is only 3% higher for involute profile. Averaged over one revolution conductance of rotor mechanism channels is minimal for elliptic rotor profile. For inter-rotor channel it is 14% less than for involute profile. The presented approach makes it possible to choose the optimal rotor profile of Roots pump for particular purpose.