Ultrasonic washing method and apparatus using continuous high frequency ultrasonic waves and intermittent low frequency ultrasonic waves
US5656095A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1994 |
| Grant date | Aug 12, 1997 |
| Priority date | — |
| Expiry date | Oct 27, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B3/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.