JPH06320125A - Ultrasonic washing apparatus - Google Patents

Abstract

PURPOSE:To separate a chemical soln. using a medium soln. and to prevent the stagnation of air bubbles. CONSTITUTION:A housing 1 is separated into a medium tank 10 and a nozzle part 9 by a partition plate 8 and a radiation member 2 whose radiation surface is formed from a curved surface having a piezoelectric vibrator 4 fixed thereto is provided in the medium tank 10 filled with a medium soln. A chemical soln. supply port 6 is opened to one end of the nozzle part 9 and an emitting port 7 emitting a chemical soln. to an object 18 to be washed is opened to the leading end of the nozzle part 9 and an air bubble removing port 15 is provided to the radiation member 2 from the cavity of the emitting surface thereof toward the end part thereof and the partition plate 18 is formed into a shape having a curved surface not disturbing the advance of ultrasonic waves. An inclined air bubble discharge groove 16 is provided to the curved surface of the partition plate 18 to be allowed to communicate with the air bubble discharge port 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic cleaning device.

[0002]

2. Description of the Related Art In a conventional device of this type, as shown in FIG. 6, a lens-shaped radiator 2 is fixed to one end of a nozzle-shaped housing 1 through a packing 3, and voltage oscillation is applied to the lens-shaped radiator 2. The child 4 is fixed, and the chemical resistant coating material 5 is attached to the radiation surface. Then, the chemical liquid is introduced from the chemical liquid supply port 6,
The housing 1 is filled with the chemical liquid, ultrasonic vibration is applied to the chemical liquid, and the chemical liquid is emitted from the emission port 7.

[0003]

The above-mentioned conventional device has the effect of being able to focus ultrasonic waves in a single point or in a straight line. It had a drawback that it could be damaged and the chemical solution could flow out. In addition, there is a drawback that bubbles are accumulated in the vicinity of the radiation surface of the radiator, and the bubbles reduce the transmittance of ultrasonic waves. Therefore, in the present invention, the medium liquid is used to separate from the chemical liquid, and the accumulation of bubbles is prevented.

[0004]

In order to solve the above-mentioned problems, the present invention separates a housing into a medium tank and a nozzle portion by a partition plate, and fixes a piezoelectric vibrator in the medium tank filled with the medium liquid. An ultrasonic cleaning device is provided in which a radiation body having a curved radiation surface is provided, a chemical solution supply port is provided at one end of the nozzle portion, and a radiation port for radiating the chemical solution to the object to be cleaned is opened at the tip.

Furthermore, a partition plate having a bubble removal hole from the recess of the radiation surface of the radiator toward the end is formed into a shape having a curved surface that does not disturb the progress of ultrasonic waves, and is inclined inside the curved surface of the partition plate. The bubble cleaning groove is provided to communicate with the bubble discharging port provided on the nozzle to form an ultrasonic cleaning device.

[0006]

The present invention is configured as described above, and the medium liquid in the medium tank transmits the ultrasonic vibration of the radiating body to transmit the vibration to the chemical liquid in the nozzle portion through the curved surface of the partition plate to form a thin circle or line. The ultrasonic chemical solution is radiated from the radiation port to the object to be cleaned in a similar manner. Further, the bubbles generated in the medium tank are discharged to the outside through the bubble removing hole, and the bubbles generated in the nozzle portion are discharged to the outside from the bubble discharging groove through the bubble discharging port.

[0007]

Embodiments of the present invention will be described in detail with reference to FIGS. The casing 1 is provided with a partition plate 8 having a curved surface and a nozzle portion 9
And the medium tank 10 are separated from each other, and the circular nozzle-shaped radiator 2 is positioned in the medium tank 10, and the flange portion 11 at the upper end is attached to the upper surface of the housing 1 via the packing 3 and the plurality of bolts 12, 12,
, And the circular piezoelectric vibrator 4 is fixed on the upper surface of the lens-shaped radiator 2.

A medium liquid supply pipe 13 for supplying a medium liquid, which is city water, is provided on one side of the medium tank 10, and a medium liquid discharge pipe 14 is provided on the other side. Further, a bubble removing hole 15 is provided from the center of the emission surface of the lens-shaped radiator 2 to the end face in the vicinity of the medium liquid discharge pipe 14 so that the bubbles are discharged from the medium liquid discharge pipe 14.

Further, the nozzle portion 9 is provided with a radiation port 7 at the lower end and a chemical liquid supply port 6 at one of the upper ends, as in the conventional case. A bubble discharge port 16 is provided on the other side, and a bubble discharge groove 17 communicating with the bubble discharge port 15 at an inclination angle Θ is provided on the curved surface of the partition plate 8. In addition, reference numeral 18 in FIG. 1 denotes an object to be cleaned. The curved surface of the partition plate in the above embodiment is formed in a lens shape having the same curvature as the curvature from the focal point of ultrasonic waves.

The first embodiment is constructed as described above, and the vibration of the piezoelectric vibrator 4 is transmitted to the partition plate 8 through the medium liquid. As shown in FIG. 3, the partition plate 8 advances so as to concentrate on one point of the ultrasonic wave, and the ultrasonic chemical solution radiated in a thin circular shape is radiated to the object to be cleaned 18 from the radiation port.

When the partition plate 8 is flat as shown in FIG. 4, the ultrasonic waves are not converged and are in a disordered state, which makes it difficult to perform effective ultrasonic cleaning.

Bubbles generated by ultrasonic cavitation in the medium liquid are discharged to the outside through the medium liquid discharge pipe 14 through the bubble removing hole 15, and bubbles generated in the cleaning chemical liquid are discharged into the bubble discharge groove 17. Rises along the slope of
It is discharged from the bubble discharge port 16 together with the liquid medicine.

Next, a second embodiment will be described with reference to FIG. In this embodiment, ultrasonic waves are emitted in a thin line shape, and the radiator 2'is formed in a rectangular shape, and accordingly, the emission surface is formed not in a spherical shape but in a curved surface. Other members, for example
The piezoelectric vibrator 4'is also formed in a rectangular shape so that the radiation port 7
′ Is formed in a rectangular shape, and the ultrasonic chemical solution is emitted in a thin line shape. Since all others are the same as in the first embodiment, the same reference numerals are given and description thereof is omitted.

[0014]

As described above, the present invention has the above-mentioned structure and action. Since the housing is separated by the partition plate and the radiator is provided in the medium tank filled with the medium liquid, the radiator vibrates. Even if it is damaged due to factors such as the above, the chemical solution will not leak.

Further, since the radiator does not come into direct contact with the chemical liquid,
No corrosion due to chemicals will occur. Further, since the partition plate is provided with a curved surface, the ultrasonic waves can be focused without being disturbed.

Further, since the bubbles generated in the medium tank and the nozzle portion are discharged to the outside, there is no possibility that the bubbles are present on the radiation surface and the progress of ultrasonic waves is hindered.

[0017]

[Brief description of drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention.

FIG. 2 is a plan view thereof.

FIG. 3 is a cross-sectional view illustrating the operation of a partition plate.

FIG. 4 is a sectional view of another example of the partition plate.

FIG. 5 is a plan view of the second embodiment.

FIG. 6 is a plan view of a conventional example.

[Explanation of Codes] 1 housing 1 ′ housing 2 radiation body (lens-shaped) 2 ′ radiation body 3 packing 4 piezoelectric vibrator 4 ′ piezoelectric vibrator 5 coating agent for chemical solution 6 chemical solution supply port 7 radiation port 7 ′ radiation port 8 Partition plate 8'Partition plate 9 Nozzle part 10 Medium tank 11 Collar part 12 Bolt 13 Medium liquid supply pipe 14 Medium liquid discharge pipe 15 Bubble removal hole 16 Bubble discharge port 17 Bubble discharge groove 18 Object to be cleaned

Claims (4)

[Claims] 1. A radiation body having a curved radiation surface on which a piezoelectric vibrator is fixed is provided in a medium tank in which a housing is separated into a medium tank and a nozzle section by a partition plate, and the medium solution is filled with the medium solution. An ultrasonic cleaning device characterized in that a chemical solution supply port is opened at one end of the container and a radiation port for radiating the chemical solution to the object to be cleaned is opened at the tip. 2. The ultrasonic cleaning device according to claim 1, wherein a bubble removing hole is provided from the recess of the radiation surface of the radiator toward the end. 3. The ultrasonic cleaning apparatus according to claim 1, wherein the partition plate is formed in a shape having a curved surface that does not disturb the progress of ultrasonic waves. 4. An ultrasonic cleaning device characterized in that an inclined bubble discharging groove is provided inside a curved surface of a partition plate so as to communicate with a bubble discharging port provided in a nozzle.