Design of Rotary Atomizer Using Characteristics of Thin Film Flow on Solid Surfaces

완전접촉 경계면 위의 박막유동 특성을 이용한 회전무화기의 형상 설계

  • Park, Boo Seong (School of Mechanical Engineering, University of Ulsan) ;
  • Kim, Bo Hung (School of Mechanical Engineering, University of Ulsan)
  • 박부성 (울산대학교 기계공학부) ;
  • 김보흥 (울산대학교 기계공학부)
  • Received : 2013.02.18
  • Accepted : 2013.10.12
  • Published : 2013.12.01


A disc-type rotary atomizer affords advantages such as superior paint transfer efficiency, uniformity of paint pattern and particle size, and less consumption of compressed air compared to a spray-gun-type atomizer. Furthermore, it can be applied to all types of painting materials, and it is suitable for large-scale processes such as car painting. The painting quality, which is closely related to the atomizer performance, is determined by the uniformity and droplet size in accordance with the design of the bell disc surface. This study establishes the basics of how to design a surface by modeling the operating bell disc's RPM, diameter, surface angle, and film thickness considering dye characteristics such as the viscosity, density, and surface affinity.


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