Ultrasonic washing machine for tableware
AssigneeMasao Kanazawa
InventorsMasao Kanazawa, Yukio Ooka
Life of this patent
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Abstract
An ultrasonic washing machine for tableware is provided with an ultrasonic generator and an air bubble supplying device in a tub. Air bubbles are sent out from holes of an air bubble supplying device to reflect ultrasound when ascending in water in the tub. Other air bubbles dissolve in the water, but arise on the tableware again by the cavitation effect of the ultrasound, which makes dirt or alien matters release from the tableware. The air in the water consumed by the cavitation of the ultrasound is fed into the water from outside from time to time. Therefore, cleaning of the tableware by air bubbles is carried out constantly and no detergent is needed in washing the tableware.
Claims6
An ultrasonic washing machine for washing tableware and the like, said washing machine comprising:
- a metal tub in which the tableware is placed to be washed, said metal tub having a bottom, and fluid inlet means through which water is suppled to said metal tub;
- an ultrasonic generator within said tub for generating ultrasound in the water supplied to said metal tub through said fluid inlet means, said metal tub being substantially spherical for reflecting ultrasound generated by said ultrasonic generator to diffuse the ultrasound through said tub onto the tableware;
- and
- bubble supplying means at the bottom of said tub for supplying and dispersing bubbles throughout the water supplied to said tub some of which dissolve in the water to replace air that has been removed from the water due to cavitation when said ultrasonic generator generates ultrasound and the remainder of which also reflect the ultrasound to diffuse the ultrasound throughout said tub and onto the articles to be washed in said tub.
Dependencies are inferred from the claim text.