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Experimental and Analytical Investigation on a Liquid Balance Ring for Automatic Washing Machines

[+] Author Affiliations
Leonardo Urbiola-Soto

Mabe Technology & Projects, Queretaro, QUE, Mexico

Marcelo Lopez-Parra

National Autonomous University of Mexico (UNAM), Mexico City, DF, Mexico

Paper No. ESDA2010-24902, pp. 321-330; 10 pages
  • ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis
  • ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, Volume 5
  • Istanbul, Turkey, July 12–14, 2010
  • Conference Sponsors: International
  • ISBN: 978-0-7918-4919-4 | eISBN: 978-0-7918-3877-8
  • Copyright © 2010 by ASME


A high-speed camera and a Particle Image Velocimetry (PIV) technique are used on a transparent liquid balancing device typical of modern washing machines. Experimental results indicate that the baffles placed inside the ring cavity interact with the fluid for it to develop modes of vibration of circumferential and axial type, thus rendering a complex swirl flow inside the annular cavity comprised of two inertial waves. One of such waves travels backwards relative to the rigid body motion. As as a result, a damping effect is induced and a phase lag with respect to the exciting unbalance occurs. An analytical dynamic model of the unbalanced response is derived and correlated with fluid flow visualization experiments and vibration measurements.

Copyright © 2010 by ASME



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