Apparatus for applying ultrasonic energy in precision cleaning

Details Apparatus for applying ultrasonic energy in precision cleaning Apparatus for applying ultrasonic energy in precision cleaning

1992-10-27

1994-08-16

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Machines

Brushing

15 3, 15 4, 134147, 134184, B08B 1102

Patent

active

053374460

ABSTRACT:
An apparatus for applying ultrasonic energy in precision cleaning includes a pressure vessel having a plurality of sonic plates, with or without a rotary device located inside the vessel. The plates may be arranged centrally within the vessel to propagate sonic waves outward, or the plates may be located on an interior wall in the pressure vessel, directed inward. Each plate includes a plurality of sonic transducers, spaced along the longitudinal axis of the pressure vessel. The rotary device may include a plurality of arms carrying removable brush holders or a rotating parts basket. In either case, the device is driven by a motor mounted in a top cover of the pressure vessel. A liquid cleaning fluid, preferably carbon dioxide, is charged in the pressure vessel to submerge the sonic plates and workpieces secured in the pressure vessel. The transducers are then energized and the rotary device engaged to apply both sonic and mechanical agitation to the workpieces for enhanced removal of particulates. The sonic application may be preceded or followed by pressurization of the pressure vessel to above the supercritical pressure of the carbon dioxide for removing dissolvable contaminants from the workpieces.

REFERENCES:
patent: 2950725 (1960-08-01), Jacke et al.
patent: 3240963 (1966-03-01), Sasaki
patent: 3318578 (1967-05-01), Branson
patent: 3520724 (1970-07-01), Massa
patent: 3985344 (1976-12-01), McCord
patent: 4561902 (1985-12-01), Lee

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