- Wed Oct 22, 2003 6:53 pm
I found this in a Google search:
Ultrasonic cleaning is widely applied in industry, yet it's still waiting for development in the field of washing machine(family type). The traditional electrostrictive transducer can't satisfy the washing requirements because of its limited strain, low density, single output frequency, and weak penetration. For a long time people have been dreaming about the ultrasonic washing machine turning into reality. And if it did come into true, the environment will be protected for the amount of cleaning agent or laundry powder will be noticeably reduced.
The giant magnetostrictive transducer has the strain that is much higher than that of the electrostrictive or the traditional magnetostrictive transducer; it possesses qualities like high energy density, adjustable waveband and frequency, strong penetration, and significant washing effects. The high-powered, small-sized ultrasonic transducer makes the design more reasonable, and because of it's small size and light weight, it's very suitable for family use. At present, ultrasonic washing machine has alreaby appeared in the Japanese market. Evidently, it's becoming urgent for us to develop our own ultrasonic washing machine.
The decades-old symbiotic ties between washing machine makers and the soap sellers are being severely tested by Sanyo's claim to have invented "the world's first zero-detergent washing machine," which relies on ultrasonic waves to loosen dirt and on electrolysis to clean the water.
The machine, selling for about US$1,000, uses ultrasonics to produce tiny water bubbles that remove organic stains. This is not Sanyo's first ultrasonic washer, but it is the first to use electrolysis to make it a detergent-free system. Electrolysis generates oxygen from the water. This breaks down stains and prevents dirt finding its way back to the clothes from the wash water.