JP3864708B2 - Ultrasonic cleaning device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to ultrasonic cleaning device, more particularly to an ultrasonic cleaning apparatus for effectively cleaning the soiled surface, such as a wall or floor.
[0002]
[Prior art]
Various methods for cleaning the floor surface by a machine have been developed, as shown in, for example, Japanese Patent Application Laid-Open Nos. 62-167527 and 5-61545.
Many of the conventional examples are methods of moving the dirt on the floor surface while rubbing with a predetermined detergent, and the technical content is often related to automation of the cleaning system.
[0003]
[Problems to be solved by the invention]
On the other hand, most of the dirt on the floor surface to be cleaned is divided into two depending on whether it is due to a water-soluble substance or a solvent substance (soluble in a specific solvent). In this case, for example, for a solvent-based substance, water is not removed as it is. For this reason, a method of using an appropriate liquid and scrubbing with a brush or the like is often used for cleaning.
[0004]
On the other hand, when cleaning the floor surface according to the above prior art, there has been a disadvantage that much labor is required for selecting a cleaning liquid and using a brush or the like. Further, in the above conventional example, since it moves while rubbing the floor surface, there has always been an inconvenience that the floor surface is easily damaged.
[0005]
OBJECT OF THE INVENTION
The present invention improves the disadvantages of the conventional example, and in particular, it is possible to smoothly and efficiently remove mainly dirt on the surface such as a floor surface with a predetermined cleaning liquid regardless of the nature of the dirt. It is an object of the present invention to provide an ultrasonic cleaning device .
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention comprises an ultrasonic transducer that outputs an ultrasonic wave having a predetermined frequency for cleaning, and a vibrator holding means that holds the ultrasonic transducer movably. In the ultrasonic cleaning apparatus provided in the vibrator holding means, a gap setting mechanism for setting the gap between the ultrasonic output surface of the vibrator and the surface to be cleaned to a predetermined value ,
The gap setting mechanism is configured by a plurality of protrusions and radiation grooves having the same height set around the ultrasonic output surface of the ultrasonic transducer, and the depth of the radiation groove is determined by the transducer. The structure is characterized in that the outer peripheral side of the holding means is formed deeper than the inner peripheral side .
[0009]
For this reason, in the present invention, since the vibrator holding means incorporating the ultrasonic vibrator is provided, the free vibration of the ultrasonic vibrator can be maintained even if the vibrator holding means is held from the outside. Therefore, a predetermined ultrasonic wave can be efficiently output from the ultrasonic output surface, and the cleaning target can be smoothly passed through the cleaning liquid by sending a predetermined cleaning liquid from the outside to the cleaning target such as the floor surface. and it can be washed, in particular functioning effective gap setting mechanism, will be a gap between the ultrasonic output surface and the cleaning surface of the ultrasonic vibrator is maintained always set to a predetermined dimension, such terms However, even if the position of the surface to be cleaned is different, ultrasonic vibration energy can always be irradiated to the surface to be cleaned under the same conditions.
[0010]
In particular, the gap setting mechanism portion is constituted by a plurality of protrusions and radiation grooves having the same height set around the ultrasonic output surface of the ultrasonic transducer, and the depth of the radiation groove is determined by By forming the vibrator holding means so that the outer peripheral side is deeper than the inner peripheral side, the inclined surface on the bottom side (located on the upper side during floor cleaning) of each radiation groove gradually increases upward Therefore, bubbles are generated easily in the area between the ultrasonic output surface of the ultrasonic transducer and the surface to be cleaned during cleaning, and the bubbles remain in this area. It is possible to eliminate the inconvenience that the propagation of water is hindered (the cleaning ability is reduced) .
[0024]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
This 1st Embodiment is a thing at the time of implementing this invention about the handy type suitable for cleaning table surfaces, such as an experiment table.
[0025]
1 and 2, reference numeral 1 denotes an ultrasonic transducer. As the ultrasonic transducer 1, a Langevin type formed in a column shape that outputs ultrasonic waves having a predetermined frequency suitable for cleaning (for example, a predetermined frequency of 28 to 100 KHz) is used. The ultrasonic vibrator 1 is housed in a portable cylindrical body 2 as a vibrator holding means, and is a part corresponding to a node (vibration deviation is zero) on the vibration mode. It is held on the cylindrical body 2 via (see FIG. 2).
Therefore, both ends of the ultrasonic transducer 1 constitute a free end in the cylindrical body (vibrator holding means) 2.
[0026]
The cylindrical body 2 as the vibrator holding means uses plastic as a material in the present embodiment, but a metal such as iron or aluminum may be used by insulating the inner wall surface.
[0027]
Reference numeral 9 denotes an electric system drive control unit that drives the ultrasonic transducer 1 described above. The electric system drive control unit 9 is housed in a portable housing 10.
In FIG. 2, reference numeral 2 a indicates an inner step portion formed on the inner diameter side of the cylindrical body 2 for supporting the flange portion 3 of the ultrasonic transducer 1. The ultrasonic transducer 1 is detachably held via the flange portion 3 by the inner step portion 2a and the cylindrical member 5 housed therein. In this case, a gap dimension of, for example, about 0.1 [mm] on one side is set around the ultrasonic vibrator 1 between the inner wall of the cylindrical member 5, and thereby the free vibration of the ultrasonic vibrator 1. Is effectively guaranteed.
[0028]
For this reason, since the ultrasonic transducer 1 has free ends at the upper and lower ends as described above, and there is no load for suppressing vibration in the axial direction, the ultrasonic transducer 1 can output predetermined ultrasonic waves efficiently. It has become.
Here, the cylindrical member 5 includes a cut portion 5A that is uniformly formed inside. In the cut portion 5A, two wiring portions, positive and negative, for driving the ultrasonic transducer 1 are disposed.
[0029]
Further, in FIGS. 1 and 2, reference numeral 6 denotes a pressing member formed in an inverted T-shaped cross section, and reference numeral 7 denotes a cap member that suppresses the pressing member 6 from jumping out.
The cap member 7 is detachably attached to the cylindrical body 2 described above via a screw mechanism 7A portion. Further, the central portion of the pressing member 6 protrudes to the outside, and a wiring 1K that supplies driving power for driving and controlling the ultrasonic transducer 1 described above is laid at the central portion of the central protruding portion 6A. ing.
[0030]
Reference numeral 6B denotes an annular recess formed on the outer periphery of the restraining member 6, which accommodates the sealing O-ring 6Ba, thereby waterproofing the ultrasonic transducer 1 portion on the cap member 7 side. Similarly, an annular recess 2B is formed around the inner diameter side of the lower end portion in FIG. 2 of the cylindrical body 2, and a sealing O-ring 2Ba is accommodated in the annular recess 2B. The inside on the ultrasonic output surface 1A side described above is waterproofed.
[0031]
Further, a gap S between the ultrasonic output surface 1A of the ultrasonic transducer 1 and the surface to be cleaned 100 is provided at the lower end surface of the cylindrical body (vibrator holding means) 2 in FIG. Is provided with a gap setting mechanism 2A.
In this embodiment, as shown in FIGS. 1A and 1B, the gap setting mechanism portion 2A has six radial grooves 2Aa formed radially at equal intervals and six radial grooves 2Aa. It is comprised by one protrusion part 2Ab.
[0032]
For this reason, the opening area M of the outer diameter side surface is set larger than the opening area m of the inner diameter side surface of the six radiation grooves 2Aa (see FIG. 1B). Therefore, it becomes possible to inflow and outflow of cleaning liquid is smoothly performed, the bubbles together to generate cleaning operation and can be smoothly discharged to the outside, air bubbles in the region surrounding the ultrasound output surface 1A is accumulated in this respect It is possible to effectively eliminate the disadvantage that the propagation of ultrasonic waves is inhibited and the cleaning ability is lowered.
[0033]
Here, the six radial grooves 2Aa may be cut so that the outer peripheral side is deeper than the inner peripheral side as shown in FIG. 2B, for example. In this case, the inclined surface 2K on the bottom surface side (located on the upper side during floor cleaning) of each radiation groove 2Aa is formed so as to gradually move upward as shown in FIG. 2 (B). .
[0034]
For this reason, for example, the bubbles generated in the region surrounding the ultrasonic output surface 1A of the ultrasonic transducer 1 during the cleaning of the floor surface are likely to come out, and in this respect the ultrasonic output surface 1A is It is possible to more effectively eliminate the inconvenience that bubbles remain in the surrounding region and the propagation of ultrasonic waves is hindered (cleaning ability is reduced).
[0035]
In the first embodiment, as shown in FIGS. 2A and 2B, the ultrasonic output surface 1A of the ultrasonic transducer 1 is retracted by the gap S in advance according to the height of the protruding portion 2Ab. Equipped. Further, the heights of the six protruding portions 2Ab set around the ultrasonic output surface 1A of the ultrasonic transducer 1 are set to the same height (here, the number of the protruding portions 2Ab is 2). Or three, four, or more than seven).
[0036]
In FIG. 1, reference numeral 11 denotes a cleaning liquid discharge pipe as cleaning liquid discharge means. The cleaning liquid discharge pipe 11 has a liquid discharge port 11 </ b> A arranged in a direction between the ultrasonic output surface 1 </ b> A and the surface to be cleaned 100.
[0037]
Further, in the configuration described above, ultrasonic cleaning of the surface to be cleaned 100 is performed through the following steps.
[0038]
That is, while maintaining the state in which the ultrasonic output surface 1A of the ultrasonic transducer 1 is close to the surface to be cleaned 100, between the vibration surface 1A of the ultrasonic transducer 1 and the surface to be cleaned 100 opposite thereto. A predetermined cleaning solution is constantly fed. At the same time, the cylindrical body 2 as the vibrator holding means is moved along the surface to be cleaned 100. In this case, the close state is maintained by the gap setting mechanism 2A as described above.
[0039]
For this reason, in this embodiment, when the cleaning liquid is supplied between the ultrasonic output surface 1A of the ultrasonic transducer 1 and the surface to be cleaned 100, the cylindrical body (vibrator holding means) 2 is used. Regardless of the movement, the cleaning liquid is automatically sent to the ultrasonic output surface 1A side from the radiation groove 2Aa formed at the tip of the cylindrical body 2.
[0040]
At the same time, by operating the ultrasonic vibrator 1, the dirt at the location is effectively removed by the action of cavitation (generation of microbubbles and bursting action) generated at the location of the dirt due to the ultrasonic vibration. And it was able to confirm experimentally that this dirt removal effect was possible continuously.
[0041]
For this reason, in this embodiment, the surface to be cleaned 100 can be cleaned and cleaned smoothly and continuously, and even when the surface to be cleaned 100 is a wall, the same can be dealt with. A versatile handy type ultrasonic cleaning device can be obtained.
[0042]
(Second Embodiment)
FIG. 3 shows a second embodiment. This second embodiment shows a modification of the gap setting mechanism 2A in the first embodiment described above.
[0043]
The gap setting mechanism 22A shown in FIG. 3 is provided with radiation grooves 22Aa at equal intervals at four locations on the circumference of the cylindrical body (vibrator holding means) 22, and the width W is similarly set to the cylindrical body (vibration). The child holding means) is characterized in that it is set to be larger than the width w of the four protruding portions 22Ab on the circumference of the circumference.
In this case, each of the four protrusions 22Ab is formed in an arc shape around the periphery, thereby setting a resistance at the time of inflow and outflow of the cleaning liquid to be small.
Other configurations are the same as those of the embodiment shown in FIGS.
[0044]
Even if it does in this way, in addition to having the same operation effect as the 1st embodiment mentioned above, in addition, the inflow and outflow of the cleaning liquid in the to-be-cleaned surface 100 can be made smoother, and the bubble is ultrasonic transducer 1. The ultrasonic output surface 1A can be quickly discharged to the outside, and in this respect, it is possible to effectively eliminate beforehand a drop in ultrasonic propagation force that is likely to occur due to bubbles generated during operation. Good.
[0045]
(Third embodiment)
FIG. 4 shows a third embodiment. The third embodiment shows another modification of the gap setting mechanism 2A in the first embodiment described above.
[0046]
The gap setting mechanism 23A shown in FIG. 4 (third embodiment) is configured by a spherical member 23Aa and a hemispherical receiving portion 23Ab that rotatably holds the spherical member 23Aa. The holding means) are provided at equal intervals at four locations on the circumference of the circumference. In this case, on the side of the spherical member receiving portion 23Ab, a thin plate-like spherical member locking plate (not shown) is provided for rotatably supporting the spherical member 23Aa and preventing its separation.
[0047]
In this case, the protrusion amount (protrusion dimension) of each of the four spherical members 23Aa is such that the gap between the ultrasonic output surface 1A of the ultrasonic transducer 1 and the surface to be cleaned 100 is the dimension S. Is set to
Other configurations are the same as those in the embodiment of FIG.
[0048]
Even if it does in this way, in addition to having an operation effect equivalent to 1st Embodiment mentioned above, in addition, inflow and outflow of cleaning fluid in surface 100 to be cleaned can be made much smoother, and ultrasonic output surface 1A Bubbles that are likely to remain in the ultrasonic transducer 1 can be discharged more quickly from the ultrasonic output surface 1A of the ultrasonic transducer 1, and in this respect, the propagation force of ultrasonic waves is further reduced due to the bubbles generated during operation. It is convenient that it can be effectively eliminated.
[0049]
(Fourth embodiment)
FIG. 5 shows a fourth embodiment.
In the fourth embodiment shown in FIG. 5, the cylindrical body (vibrator holding means) 2 equipped in the first embodiment described above is equipped with a cleaning liquid discharge pipe 11 that forms the main part of the cleaning liquid discharge means. Further, the present invention is characterized in that a cleaning liquid recovery mechanism 31 is provided as a cleaning liquid recovery means for recovering the discharged cleaning liquid.
[0050]
In the cleaning liquid recovery mechanism 31, the liquid recovery part 31 </ b> A has a horseshoe shape with respect to the surface to be cleaned 100, and the used cleaning liquid is supplied to a predetermined sewage tank (not shown) via the recovery liquid suction part 31 </ b> B and the recovery pipe 31 </ b> C. Can be recovered.
In FIG. 5, reference numeral 33 denotes a connection mechanism for detachably connecting the cleaning liquid discharge pipe 11 and the cleaning liquid recovery mechanism 31 to the cylindrical body (vibrator holding means) 2 described above. Other configurations are the same as those in the case of FIGS. 1 to 2 (first embodiment) described above.
[0051]
Even if it does in this way, since it has the same operation effect as a 1st embodiment mentioned above, and also the washing liquid discharge pipe 11 and the washing liquid recovery mechanism 31 can be moved simultaneously, for example, the washing liquid is interrupted and the washing action is performed. There is no inconvenience such as interruption, and there is an advantage that the workability of the cleaning work can be greatly improved in this respect.
[0089]
Further, in each of the above embodiments, the case where the predetermined gap S is provided between the ultrasonic transducers 1 and 55 and the surfaces to be cleaned 100 and 200 has been exemplified. A good member may be filled or equipped in the form of a plane or a film. In this case, for example, in the first to second embodiments, the gap setting mechanisms 2A, 22A, and 23A may be provided as they are, or they may be deleted to make a flat surface. You may equip the surface in the shape of a plane.
Further, in any of these cases, the use in the state of being close to or in contact with the surface to be cleaned via the cleaning liquid is the same as in the above-described embodiments.
[0090]
In addition, although the Langevin type is used as the ultrasonic vibrator equipped in each of the above embodiments, other ultrasonic transducers may be used as long as they function equally. Also, the frequency used may be around 1 MHz depending on the application.
[0091]
【The invention's effect】
Since the present invention is constituted as described above features, according to this, so that together the feed the cleaning liquid constantly toward a cleaned portion of the floor surface or the like through the cleaning liquid irradiated with the ultrasound wave to the object to be cleaned places Therefore, it can be cleaned continuously by sliding on the cleaning liquid while gently abutting the floor surface or table surface, etc., and at the same time, since it uses ultrasonic vibration and cavitation, it becomes dirty. The surface to be cleaned, such as the floor surface, can be cleaned quickly and smoothly regardless of the nature (water-soluble or solvent-based), and the ultrasonic transducer is not pressed. It is possible to provide an unprecedented excellent ultrasonic cleaning device that can effectively avoid the inconvenience of damaging a portion.
[0092]
In addition , since it has a vibrator holding means with a built-in ultrasonic vibrator, free vibration of the ultrasonic vibrator can be maintained even if the vibrator holding means is held from the outside. It is possible to output predetermined ultrasonic waves efficiently from the surface, and by sending a predetermined cleaning liquid from the outside to the area to be cleaned such as the floor surface, the area to be cleaned can be smoothly cleaned via the cleaning liquid. Also, the wall surface can be cleaned efficiently in a contacted state, and the gap setting mechanism functions effectively, and the gap between the ultrasonic output surface of the ultrasonic transducer and the surface to be cleaned is always set to a predetermined size. In this respect, even if the position of the surface to be cleaned is different, ultrasonic vibration energy can always be applied to the surface to be cleaned under the same conditions, and it can continue for a long time. Smooth ultrasonic cleaning It can be.
[0093]
In this case, if the gap setting mechanism section is configured by a plurality of protrusions having the same height set around the ultrasonic output surface of the ultrasonic transducer, the cleaning liquid supplied from the side surface can be smoothly applied to the surface to be cleaned. In addition, since the generated bubbles can be effectively discharged to the outside, it is possible to effectively eliminate the reduction in the cleaning ability caused by the bubbles in advance.
[Brief description of the drawings]
1A and 1B are diagrams showing a first embodiment of the present invention, in which FIG. 1A is a front view showing an example of a usage state, and FIG. 1B is an ultrasonic transducer and vibration in FIG. It is explanatory drawing which shows the surface by the side of the ultrasonic output of a child holding means.
2A is a cross-sectional view of the apparatus shown in FIG. 1A, FIG. 2A is a partially omitted vertical cross-sectional view, and FIG. 2B is an explanatory view showing a modification of FIG. 2A. is there.
FIG. 3 is a view showing a second embodiment of the present invention, in which FIG. 3 (A) is a partially omitted longitudinal sectional view showing a tip portion of an ultrasonic vibrator and vibrator holding means, and FIG. 3 (B). FIG. 4 is an explanatory view showing a lower end surface (surface on the ultrasonic output side of the ultrasonic transducer) in FIG.
FIG. 4 is a diagram showing a third embodiment of the present invention, in which FIG. 4 (A) is a partially omitted longitudinal sectional view showing a tip portion of an ultrasonic transducer and transducer holding means, and FIG. 4 (B). FIG. 5 is an explanatory view showing a lower end surface (surface on the ultrasonic output side of the ultrasonic transducer and transducer holding means) in FIG.
FIG. 5 is an explanatory diagram showing a fourth embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ultrasonic transducer | vibrator 2,22,23 Cylindrical body 2A, 22A, 23A as a vibrator holding means Gap setting mechanism part 2Aa, 22Aa Radiation groove 2Ab, 22Ab Protrusion part 9 Electric system drive control part 10 Portable housing | casing 11 Cleaning liquid discharge pipe as cleaning liquid discharging means 23Aa Spherical member 23Ab Spherical member receiving part 31 Cleaning liquid recovery mechanism as cleaning liquid recovery means 100 Surface to be cleaned

Claims (1)

An ultrasonic vibrator that outputs ultrasonic waves of a predetermined frequency for cleaning, and a vibrator holding means that holds the ultrasonic vibrator movably,
In the ultrasonic cleaning apparatus provided with the gap holding mechanism section in the vibrator holding means for setting the gap between the ultrasonic output surface of the ultrasonic vibrator and the surface to be cleaned to a predetermined value ,
The gap setting mechanism is configured by a plurality of protrusions and radiation grooves having the same height set around the ultrasonic output surface of the ultrasonic transducer, and the depth of the radiation groove is determined by the transducer. An ultrasonic cleaning apparatus, wherein the outer peripheral side of the holding means is formed deeper than the inner peripheral side .

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