Ultrasonic washing method and apparatus using continuous high fr

Details Ultrasonic washing method and apparatus using continuous high fr Ultrasonic washing method and apparatus using continuous high fr

1994-10-27

1997-08-12

Warden, Jill

Cleaning and liquid contact with solids

Processes

Including application of electrical radiant or wave energy...

134184, B08B 312

Patent

active

056560958

ABSTRACT:
A plurality of small bubbles are continuously generated by transmitting to washing water in a vessel, a high frequency ultrasonic wave from an ultrasonic vibrator which generates a high frequency output from a high frequency oscillator and intermittently transmitted low frequency ultrasonic waves from ultrasonic vibrators wherein the intermittent low frequency ultrasonic waves are produced from low frequency outputs from low frequency oscillators for short periods of time. The plurality of small bubbles are destroyed by the intermittent ultrasonic waves and the pressure from the sound of the ultrasonic waves in the washing water is thereby increased and washing performance is improved.

REFERENCES:
patent: 4409999 (1983-10-01), Pedziwiatr
patent: 4672984 (1987-06-01), Ohhashi
patent: 4826538 (1989-05-01), Sanders et al.
patent: 4893320 (1990-01-01), Yanagi et al.
patent: 5039347 (1991-08-01), Hindstrom et al.
patent: 5076854 (1991-12-01), Honda et al.
patent: 5137580 (1992-08-01), Honda
patent: 5218980 (1993-06-01), Evans

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