Ultrasonic oscillating device and ultrasonic washing apparatus using the same
First Claim
1. An ultrasonic washing apparatus, comprising:
- a tank for containing cleaning liquid;
an ultrasonic oscillating device for emitting an ultrasonic wave into the cleaning liquid of the tank; and
an ultrasonic oscillator for outputting a drive signal to the ultrasonic oscillating device,wherein the ultrasonic oscillator is a multifrequency oscillator constituting means for outputting a drive oscillating signal having a fundamental frequency and an odd number multiple of the fundamental frequency, andwherein the ultrasonic oscillating device comprises a base plate and an ultrasonic transducer attached to the base plate,the base plate having a thickness which is an integer multiple of approximately a half-wavelength of a resonance frequency of the base plate oscillating in the direction of the thickness thereof, andin which the base plate is in the shape of a quadrilateral with a length of one side to the quadrilateral being at least a quarter-wavelength of the resonance frequency of the base plate.
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Accused Products
Abstract
An ultrasonic oscillating device comprising a base plate and an ultrasonic transducer attached to the base plate. The thickness of the base plate is an integer multiple of approximately a half-wavelength of an oscillation of the base plate in the direction of its thickness under a driving frequency. The base plate may be a quadrilateral such as a square and a rectangle with a length of one side of the quadrilateral being at least a quarter-wavelength of the oscillation. The base plate may be a circle with a length of a diameter of the circle being at least a quarter-wavelength of the oscillation. An ultrasonic washing apparatus comprising a cleaning tank, an ultrasonic multi-frequency oscillator, and the ultrasonic oscillating device is also provided.
85 Citations
9 Claims
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1. An ultrasonic washing apparatus, comprising:
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a tank for containing cleaning liquid; an ultrasonic oscillating device for emitting an ultrasonic wave into the cleaning liquid of the tank; and an ultrasonic oscillator for outputting a drive signal to the ultrasonic oscillating device, wherein the ultrasonic oscillator is a multifrequency oscillator constituting means for outputting a drive oscillating signal having a fundamental frequency and an odd number multiple of the fundamental frequency, and wherein the ultrasonic oscillating device comprises a base plate and an ultrasonic transducer attached to the base plate, the base plate having a thickness which is an integer multiple of approximately a half-wavelength of a resonance frequency of the base plate oscillating in the direction of the thickness thereof, and in which the base plate is in the shape of a quadrilateral with a length of one side to the quadrilateral being at least a quarter-wavelength of the resonance frequency of the base plate. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An ultrasonic oscillating device comprising:
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a tank comprising a base plate and comprising four sides connected to said base plate, said tank functioning to hold a washing liquid; an ultrasonic transducer attached to said base plate; wherein said base plate has a thickness which is an integer multiple of approximately a half-wavelength of an ultrasonic oscillation of said base plate in the direction of the thickness thereof under a driving ultrasonic frequency, wherein said base plate has a periphery substantially in he shape of a quadrilateral with a length of one side of said quadrilateral being at least a quarter-wavelength of said ultrasonic oscillation of said base plate, a multifrequency ultrasonic oscillator connected to said ultrasonic transducer in order to drive the same, said oscillator constituting means for outputting a drive oscillating signal having a fundamental frequency and an odd number multiple of the fundamental frequency, said ultrasonic oscillation being transmitted into said washing liquid whereby cleaning efficiency of said liquid is improved. - View Dependent Claims (8, 9)
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Specification