Research Papers

Dynamic Performance of the LeBlanc Balancer for Automatic Washing Machines

[+] Author and Article Information
Leonardo Urbiola-Soto1

 Mabe Technology and Projects, Acceso B, No. 406, Querétaro 76100, Mexicoleonardo.urbiola@mabe.com.mx

Marcelo Lopez-Parra

Department of Mechanical Engineering, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Querétaro 76230, Mexico


Corresponding author.

J. Vib. Acoust 133(4), 041014 (Apr 11, 2011) (8 pages) doi:10.1115/1.4003597 History: Received May 09, 2010; Revised October 15, 2010; Published April 11, 2011; Online April 11, 2011

The paper describes a high-speed camera and a particle image velocimetry (PIV) technique used on a transparent liquid balancing device for washing machines. Experimental results indicate that the baffle-liquid interaction renders fluid modes of vibration of circumferential and axial types. This complex swirl flow is comprised of two inertial waves; one of such waves is synchronous with the rigid body motion, while the other is a fluid backward traveling wave, thus enhancing the system damping capability. This damping phenomenon was revealed by the fluid flow visualization and PIV technique employed.

Copyright © 2011 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Figure 1

Washing machine cut-away view

Grahic Jump Location
Figure 17

Washing machine dynamic unbalanced response at a fill ratio of 0.5

Grahic Jump Location
Figure 16

Washing machine dynamic unbalanced response at a fill ratio of 0

Grahic Jump Location
Figure 15

Fluid distribution relative to unbalance mass location: (a) unbalance mass location and (b) relative location of the thinnest fluid zone to the unbalance mass location

Grahic Jump Location
Figure 14

Washing machine dynamic unbalanced response at a fill ratio of 0.8

Grahic Jump Location
Figure 13

Dynamic model; displacement vector and force diagram

Grahic Jump Location
Figure 12

Fluid distribution: (a) case I, (b) case II, (c) case III, (d) case IV, (e) case V, and (f) fluid center of mass location (— and --) and fluid force (ο’s)

Grahic Jump Location
Figure 11

Waterfall vibration plot of balance ring vibration: (a) x-axis and (b) y-axis

Grahic Jump Location
Figure 10

Velocity histogram

Grahic Jump Location
Figure 9

Balance ring relative velocity map

Grahic Jump Location
Figure 8

Complex 3D wave: (a) side view with crest and valley and (b) coupled vibrating modes; m=4 and n=8

Grahic Jump Location
Figure 7

Modes of vibration: (a) circumferential modes of vibration of a thin wall ring and (b) lateral mode shapes of a string

Grahic Jump Location
Figure 6

Backward traveling wave: (a) top view and (b) side view; (+) and (−) indicate a crest and a valley, respectively

Grahic Jump Location
Figure 5

Fluid bulk-flow in a hollow ring with no baffles: (a) top view and (b) side view

Grahic Jump Location
Figure 4

Fluid flow visualization: (a) high-speed camera top view, (b) fluid flow attached to the outer wall at 15.7 rad/s (150 rpm), and (c) PIV experimental array

Grahic Jump Location
Figure 3

Transparent balance ring: (a) top view and (b) radial baffle; dimensions in millimeters

Grahic Jump Location
Figure 2

Laser displacement transducer array



Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In