JPS6337111Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an ultrasonic cleaning device that increases the cleaning effect by supplying air bubbles between an object to be cleaned and an ultrasonic vibrator.

[Conventional technology]

A conventional ultrasonic cleaning device is configured such that an ultrasonic vibrator that is energized by an ultrasonic signal is immersed in a liquid so as to face an object to be cleaned. The ultrasonic vibrator includes a vibrating element such as lead zirconium titanate to which an ultrasonic signal is applied, and this vibrator is housed in a watertight manner.
It consists of a case that vibrates the wall surface facing the object to be measured.

In the above configuration, the vibration of the vibrating element becomes vibration of the case wall surface and is propagated into the liquid, causing cavitation. The object to be cleaned is cleaned by this cavitation action.

[Problem that the invention attempts to solve]

In the conventional ultrasonic cleaning device described above, when increasing the cleaning effect, a large energizing signal is applied to the vibrating element. There is a problem in that the vibrating element can generate more heat in response to the magnitude of the energizing signal, shortening its life.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an ultrasonic cleaning device that enhances the cleaning effect without shortening the life of the ultrasonic vibrator.

[Means for solving problems]

The ultrasonic cleaning device of the present invention that solves the above problems is an ultrasonic cleaning device in which an ultrasonic vibrator energized by an ultrasonic signal is immersed in a liquid so as to face the object to be cleaned. The structure includes means for supplying air bubbles between the body and the ultrasonic transducer.

[Effect]

The ultrasonic cleaning device of the present invention increases the liquid vibration between the object to be cleaned and the ultrasonic vibrator, and also increases the cavitation effect to enhance the cleaning effect.

〔Example〕

The present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. The ultrasonic cleaning device is supported on a support tube 1, and the object to be cleaned, for example, a PH electrode section 2 (the PH electrode section 2 is supported on a support tube 3 and constitutes a PH measurement system with a signal conversion/instruction section 4). An ultrasonic transducer 5 (the ultrasonic transducer 5 has a transducer element housed in a substantially cylindrical case) is installed facing the support tube 1, and a cable is installed in the support tube 1. An oscillator 6 that applies an ultrasonic signal to an ultrasonic transducer 5 (actually, a transducer element) via
and a bubble supply means 10 consisting of a bubble generating section 7, a pump 8, and a tube 9 connecting these. As shown in FIG.
(The figure is a cutaway perspective view of the bubble generator 7), which is an annular container with a large number of through holes 11 in the wall. Air bubbles 12 are continuously supplied between the sound wave vibrator 5 and the sound wave vibrator 5 .

In the above configuration, when the pump 8 is driven,
The air forced into the bubble generator 7 is supplied between the PH electrode 2 and the ultrasonic vibrator 5 in the form of bubbles of various sizes, and is scattered therebetween. For this reason, the PH electrode part 2
The space between the ultrasonic transducer 5 and the ultrasonic transducer 5 is filled with a mixture of air bubbles and the liquid to be measured, that is, a compressible gas-liquid mixture whose density is lower than that of the liquid to be measured. Therefore, the wall of the case of the ultrasonic vibrator 5 vibrates more easily than when it is surrounded only by the liquid to be measured, and exhibits a large amplitude with the same energizing signal. This causes the gas-liquid mixture between the PH electrode section 2 and the ultrasonic vibrator 5 to vibrate. Furthermore, small bubbles scattered near the PH electrode section 2 increase the cavitation effect. The above-mentioned actions act synergistically with respect to the cleaning action in the PH electrode section 2, thereby further increasing the cleaning action.

In the above embodiments, a PH electrode section is shown as the object to be cleaned, but the present invention is not limited to this, and the object to be cleaned may be an electrode section of another solution analyzer. In addition, the bubble supply means may not use a pump, but may instead be configured to appropriately reduce the pressure of instrumentation air (compressed air that acts as a power source for pneumatic industrial instruments), etc., and guide it to the bubble generation section. . Furthermore, instead of the annular container, the bubble generating section may have a structure (so-called bubbler tube) in which the tip of a tube into which air is introduced faces between the object to be cleaned and the ultrasonic cleaner.

[Effect of idea]

As explained above, according to the ultrasonic cleaning apparatus of the present invention, since air bubbles are supplied between the object to be cleaned and the ultrasonic vibrator, a large energizing signal is not applied to the ultrasonic vibrator ( The cleaning effect can be increased without shortening the life of the ultrasonic transducer.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a bubble generating section in an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Support tube, 5...Ultrasonic vibrator, 6...Ultrasonic oscillator, 7...Bubble generator, 9...Tube, 10...Bubble supply means, 11...Through hole.

Claims (1)

[Scope of utility model registration request] an ultrasonic vibrator supported by a support tube and installed facing the object to be cleaned; an ultrasonic oscillator that applies an ultrasonic signal to the ultrasonic vibrator; and an ultrasonic oscillator installed near the ultrasonic vibrator to It consists of a bubble generating section that generates bubbles toward the sonic vibrator, and a pump that supplies gas to the bubble generating section via a tube, and the bubbles generated in the bubble generating section cause the object to be cleaned to By increasing the vibration of the liquid between the ultrasonic vibrators, vibrations from the ultrasonic vibrators become vibrations on the case wall surface and are propagated into the liquid, thereby preventing the object to be cleaned from being cleaned by cavitation action. An ultrasonic cleaning device characterized by increasing