JPH08117710A - Cleaning device - Google Patents

Abstract

PURPOSE: To provide a cleaning device in which high cleaning effect is obtained by efficiently acting ultrasonic wave while reducing loss. CONSTITUTION: This cleaning device is provided with an ultrasonic vibrator 20 and a nozzle chamber 24 in which the ultrasonic vibrator 20 is faced to the inside and a discharge port 22 is opened in the position nearly facing the vibrator. The nozzle chamber 24 is constituted so as to introduce running water by opening a plurality of inflow ports around the ultrasonic vibrator 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device of the type in which running water is applied to the object to be cleaned, and the cleaning effect is enhanced by applying ultrasonic vibration to the running water.

[0002]

2. Description of the Related Art Conventionally, a flowing water type cleaning device utilizing ultrasonic vibration of this type is disclosed in, for example, Japanese Patent Laid-Open No. 56-60677.
It is known as can be seen in the publication. Such a conventional device will be described with reference to FIG. Reference numeral 1 is a nozzle tube, and 2 is an ultrasonic transducer. The ultrasonic transducer 2 is provided at a position directly facing the discharge port 3 of the nozzle tube 1 in order to transmit the ultrasonic wave to the object to be cleaned with as little loss as possible, and irradiates the ultrasonic wave substantially parallel to the movement direction of the discharged water flow. For this reason, the nozzle tube 1 forms a flow path that guides the water flow from the side of the ultrasonic transducer 2 and diverts it in front of the ultrasonic transducer 2, and the transducer 2 sends ultrasonic waves at the position where this water stream diverts. Was configured to give.

[0003]

However, in such a conventional structure, since the flow path is turned into an L-shape, a cavitation or a turbulent flow is generated in the C portion of FIG. In addition to the fact that the direction of irradiation and the direction of irradiation of ultrasonic waves do not always match, efficient cleaning cannot be obtained, and ultrasonic waves ride on a meandering flow and are repeatedly reflected and attenuated by the pipe wall, which causes a significant energy loss. It was In order to make the directions of the water flow and the ultrasonic wave uniform, this can be solved by securing a sufficient length of the nozzle tube 1 from the vibrator 2 to the discharge port 3, but the size of the nozzle tube 1 increases accordingly. There was an inconvenience due to restrictions on use.

In addition, in this type of cleaning apparatus, it is necessary to increase the output of the ultrasonic vibrator in order to improve the cleaning power. However, in the currently known vibrators, the physical properties are limited and the conversion efficiency is lowered. There is a limit to the output that can be obtained with each oscillator. Therefore, for example, as disclosed in Japanese Patent Laid-Open No. 62-65784, an attempt to increase ultrasonic output by using a plurality of transducers is known. However, it was not easy to align the direction of water flow with the direction of multiple ultrasonic waves, and a sufficient effect was not obtained.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a cleaning device of the type in which running water is applied to an object to be cleaned, which is designed to apply ultrasonic vibration to the running water. A nozzle chamber having a discharge port opened at a position substantially facing the ultrasonic oscillator inside, the nozzle chamber having a plurality of inlets around the ultrasonic oscillator. The present invention is characterized in that the flowing water is introduced by opening it, and ultrasonic cleaning is achieved by efficiently applying ultrasonic waves to the flowing water to reduce energy loss.

Further, a plurality of ultrasonic vibrators are provided at positions substantially facing the discharge port of the nozzle chamber at substantially equal intervals so as to sandwich the flow center line of the discharge running water, and the vibrators respectively correspond to the flow center of the discharge running water. It is characterized by irradiating ultrasonic waves in a direction intersecting at substantially equal angles, and achieves highly effective cleaning by using a plurality of ultrasonic vibrators.

The nozzle chamber communicates with a water source through the first chamber and the second chamber, is connected to the water source through the first chamber, and is connected with the first chamber through a plurality of communication holes in the second chamber. It is desirable that the nozzle chamber introduces flowing water from the second chamber through the plurality of inflow ports.

[0008]

As a result, flowing water is introduced into the nozzle chamber from a plurality of inlets around the ultrasonic oscillator, and the respective introduced flowing water merges in front of the ultrasonic oscillator and heads straight to the discharge port. Become. Therefore, if ultrasonic waves are emitted from the vibrator at this confluence, it is possible to linearly reach the object to be cleaned together with running water.

Further, a plurality of ultrasonic vibrators are provided at substantially equal intervals across the center line of the discharged running water, and the vibrators emit ultrasonic waves in directions intersecting with the flowing center of the discharged running water at substantially the same angle. Therefore, the plurality of ultrasonic waves can be combined on the flowing water to give a larger ultrasonic energy.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 2 is a cross-sectional explanatory view of an embodiment of the present invention, and FIG. 3 is a plan explanatory view of the same embodiment. The cleaning device 11 is roughly divided into a main body casing 12 and a nozzle case unit 13.

The main body casing 12 is provided with a water inlet 12 which is connected to a water source, and the inside thereof is partitioned by a partition wall 14 to form a first chamber 15 and a second chamber 16. The first chamber 15 introduces washing water from a water source through the water inlet 12, and a large number of small-diameter communication holes 1 are formed in the partition wall 14.
The washing water is dispersed via 7 and sent to the second chamber 16. The second chamber 16 is formed so as to surround the side periphery of the nozzle unit 13, and the cleaning water sent from the first chamber 15 is sent to the nozzle unit 13 from a plurality of inflow ports 18 formed around the nozzle unit 13. Reference numeral 19 denotes a flange integrally formed with the main body casing 12 for fixing the cleaning device 11 to a place of use.

The nozzle unit 13 includes an ultrasonic transducer 20.
And a nozzle casing 23 having a funnel-shaped tapered cross section and a discharge end 22. The nozzle casing 23 is attached to the base 21 to form a unit, and the base 21 is fixed to the main body casing 12. The cleaning device 11 is completed. Nozzle unit 13
A nozzle chamber 24 is formed inside, and cleaning water sent from the second chamber through the inflow port 18 is discharged through the discharge port 2.
It is converged to 2 and injected. The ultrasonic vibrator 20 is attached at a position directly facing the discharge port 22 of the base 21, and applies ultrasonic vibration to the cleaning water flowing into the nozzle chamber 24.

According to the apparatus of the embodiment thus constituted, the washing water flow from the water source first enters the first chamber 15 and is dispersed into a fine stream by the communication hole 17 and is sent to the second chamber 16 and then the second chamber. At 16, the particles are distributed around the nozzle unit 13 and also dispersed from the inflow port 18 and flow into the nozzle chamber 24. Nozzle chamber 24
At, the cleaning water flowing in from the surrounding inflow port 18 is merged and converged and sent to the discharge port 22. In this way, since the cleaning water is dispersed from the periphery of the nozzle chamber 24 and introduced and merged in the nozzle chamber 24, the direction of the dispersed water flow, that is, the streamline can be aligned and discharged. If the ultrasonic wave from the child 20 is applied, the ultrasonic wave can act linearly on the object to be cleaned in front of the ejection port 22.

FIG. 4 is a cross-sectional explanatory view of another embodiment, and FIG. 5 is a main portion explanatory view of the same embodiment. A plurality of (four in this example) ultrasonic transducers are provided to increase the ultrasonic output. It was a bad thing.

The base 21 of the nozzle unit 13 has its central portion bulged outward in the shape of a quadrangular pyramid with an obtuse apex, and four ultrasonic transducers 20 _{1 to} 20 ₄ are attached to each surface of the quadrangular pyramid. ing. Further, the top of the quadrangular pyramid is provided so as to substantially coincide with the flow center line R of the water flow from the discharge port 22, whereby the four ultrasonic transducers 20 _{1 to} 20 ₄ are moved to the flow center of the discharge flow water. The lines R can be sandwiched and arranged at substantially equal intervals. Moreover, the four ultrasonic transducers 20 _{1 to} 20 ₄ are provided with the flow center line R.
With respect to each other, the ultrasonic waves are emitted in directions intersecting the flow center R of the discharged flowing water at substantially the same angle.

Reference numeral 25 is a drive circuit for the ultrasonic transducers 20 _{1 to} 20 ₄ , which drives the four transducers 20 _{1 to} 20 ₄ with a common output to generate ultrasonic waves of the same phase and the same frequency. Reference numeral 26 is a metal pipe attached to the discharge port 22 portion of the nozzle casing 23. Normally, the nozzle casing is a molded plastic product, but the plastic absorbs ultrasonic waves and may generate heat and deform. The metal is well-reflected and heat-resistant to prevent deformation.

As described above, according to the embodiment having a plurality of ultrasonic transducers, the ultrasonic transducers 20 _{1 to} 20 ₄ are discharged from the nozzle chamber 24 at a position substantially facing the discharge port 22. The core wires R are sandwiched and provided at substantially equal intervals, and the vibrator 2
Since each of 0 _{1 to} 20 ₄ irradiates ultrasonic waves in a direction intersecting the flow center R of the discharged running water at an angle substantially equal to each other, a plurality of ultrasonic outputs can be synthetically converged and acted on the object to be cleaned.

Even if the four oscillators 20 _{1 to} 20 ₄ are respectively oscillated at their own frequencies, a high-power synthetic ultrasonic wave of a certain degree can be obtained. If sound waves are generated, they do not cancel each other out, the amplitude can be amplified efficiently, and a synthetic ultrasonic wave with higher output can be obtained.

[0019]

As is apparent from the above description, according to the present invention, it is possible to cause the ultrasonic waves to linearly reach the object to be cleaned together with running water, and to efficiently apply the ultrasonic waves with reduced loss, Highly effective cleaning is possible. Further, it is not necessary to lengthen the dimension from the ultrasonic transducer to the ejection port as in the conventional case, which can contribute to downsizing of the device.

It should be noted that a plurality of ultrasonic vibrators are provided at substantially equal intervals across the center line of the discharged running water, and the ultrasonic vibrators emit ultrasonic waves in directions intersecting with the center of the discharged running water at substantially the same angle. Therefore, a plurality of ultrasonic waves can be synthesized on the flowing water to give a larger ultrasonic energy, and a stronger cleaning effect can be exerted.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a conventional example.

FIG. 2 is a cross-sectional explanatory view of the embodiment of the present invention.

FIG. 3 is an explanatory plan view of an embodiment of the present invention.

FIG. 4 is a sectional explanatory view of another embodiment.

FIG. 5 is an explanatory view of a main part of another embodiment.

[Explanation of symbols]

11 Cleaning Device 12 Main Body Casing 13 Nozzle Unit 15 First Chamber 16 Second Chamber 17 Communication Hole 18 Inlet Port 20 ・ 20 _{1 to} 20 ₄ Ultrasonic Transducer 22 Discharge Port 24 Nozzle Chamber

Claims (3)

[Claims] 1. A cleaning device of the type in which running water is applied to the object to be cleaned for cleaning, wherein ultrasonic vibration is applied to the running water, the ultrasonic vibrator and the ultrasonic vibrator A nozzle chamber having a discharge port opened at a position substantially facing the vibrator, and the nozzle chamber opens a plurality of inlets around the ultrasonic vibrator to introduce the flowing water. A cleaning device characterized by the above. 2. The cleaning apparatus according to claim 1, wherein a plurality of ultrasonic transducers are provided at positions substantially facing the discharge port of the nozzle chamber at substantially equal intervals so as to sandwich the flow center line of the discharge flowing water. The cleaning device is characterized in that each child irradiates ultrasonic waves in a direction intersecting the flow center of the discharged flowing water at an angle substantially equal to each other. 3. The cleaning apparatus according to claim 1, wherein the nozzle chamber is a first chamber and a second chamber.
The chamber is connected to a water source through a chamber, the first chamber is connected to the water source, the second chamber is connected to the first chamber through a plurality of communication holes, and the nozzle chamber is connected through the plurality of inflow ports. A cleaning device in which running water is introduced from a second chamber.