Deaeration device and ultrasonic cleaning device using the same
AssigneeKaijo Corporation
InventorsKazuyuki Saiki, Masaru Hase, Katsuhiro Koyama, Katsutada Sakazaki
Life of this patent
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Abstract
A deaeration device for bubbling dissolved air in the cleaning liquid by cavitation is connected on a cleaning-liquid circulation path so as to bubble the dissolved air in the cleaning liquid flowing through the cleaning-liquid circulation path by the deaeration device, and the bubbled dissolved air flows back to the cleaning tank together with the cleaning liquid so that the bubbled dissolved air is ejected from the liquid surface of the cleaning tank to the outside of the tank. Moreover, a propeller-type pump is used as the circulating pump, and the dissolved air concentration of the cleaning liquid is controlled within a range of 2.5 to 3.5 mg/l.
Claims12
An ultrasonic cleaning device comprising:
- an ultrasonic wave generator;
- a cleaning tank attached with said an ultrasonic wave generator for being filled with cleaning liquid for ultrasonic cleaning of an object to be cleaned by immersing the object to be cleaned in said cleaning tank and irradiating an ultrasonic wave from said ultrasonic wave generator;
- a cleaning-liquid circulation path formed so that the cleaning liquid in said cleaning tank is circulated through a predetermined path and returned into said cleaning tank;
- a circulating pump for suctioning the cleaning liquid in said cleaning-liquid circulation path for circulation;
- and
- a deaeration device disposed in said cleaning-liquid circulation path,
- wherein said deaeration device has an obstacle arranged in said cleaning-liquid circulation path to generate turbulence by resisting the flow of the cleaning liquid through said cleaning-liquid circulation path;
- and
- wherein dissolved air in the cleaning liquid flowing through said cleaning-liquid circulation path is bubbled by generating cavitation on a downstream side of said obstacle and the bubbled dissolved air flows back into said cleaning tank together with the cleaning liquid so that the bubbled dissolved air is ejected from a liquid surface of the cleaning liquid in said cleaning tank to an outside of said cleaning tank.
Dependencies are inferred from the claim text.