JP2000140729A - Liquid atomization apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an atomization apparatus capable of being used for a low concentrated hypochlorous acid-containing strong acidic water-generating atomization apparatus which is small-sized and easily portable by a method wherein a piezo-electric element, its driver, a perforated plate of which one end is fixed to the piezo-electric element, and an open atomization tank are provided, and an open end of the open atomization tank is covered by the perforated plate. SOLUTION: A piezo-electric element 30 is arranged to recessed parts of a resin-made cover 29 and a pressure resistant cover 18, and one side surface of the element is fixed to the cover 29, and one end of a perforated plate 31 is fixed to one end of the other side surface. The perforated plate 31 covers an open atomization tank 32 being the recessed part formed in the cover 18. The perforated plate 31 comprises that wherein all surface containing an inner surface of a hole of an acid-resisting noble metal plate or nickel plate is evaporation deposited with noble metal or coated with a Teflon resin, and acid resistance is improved. A distance between the perforated plate 31 and a bottom wall of the open atomization tank 32 standing opposite thereto is approximately 0.5 mm to approximately 1.5 mm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-sized liquid spraying apparatus which can be used for a portable low-concentration hypochlorous acid-containing strongly acidic water generating spraying apparatus and the like.

[0002]

2. Description of the Related Art An aqueous solution of hypochlorous acid differs in the state of dissolved chlorine compounds depending on the pH of the aqueous solution, and has different sterilizing power. When the pH of the aqueous solution of hypochlorous acid is 8 or more, that is, when the aqueous solution of hypochlorous acid is alkaline, the aqueous solution contains hypochlorite ion (Cl
O ^-) is present mainly. Therefore, the alkaline hypochlorous acid aqueous solution has a weak sterilizing power. PH of hypochlorous acid aqueous solution is 7
When it is below, that is, when the aqueous solution of hypochlorous acid becomes acidic, the sterilizing power is 10 to 100 as compared with hypochlorite ion.
The abundance of hypochlorous acid (HC1O), which is twice as strong, is increased in place of hypochlorite ion. Therefore, the acidic hypochlorous acid aqueous solution has a strong sterilizing power. PH of the aqueous solution of hypochlorous acid is 5.
When the value is 5 or less, almost 100% of the chlorine compound in the aqueous solution of hypochlorous acid becomes hypochlorous acid, and the sterilizing power of the aqueous solution of hypochlorous acid is further enhanced. When the pH of the aqueous hypochlorous acid solution becomes 3 or less, a part of chlorine gas (C1 ₂ ) having stronger sterilizing power than hypochlorous acid is generated, and the sterilizing power of the aqueous hypochlorous acid solution is further enhanced.

[0003] Acidic sterilized water containing hypochlorous acid has the ability to instantly sterilize and sterilize bacteria such as Escherichia coli, MRSA, and Staphylococcus aureus. Hyaluronic acid containing hypochlorous acid is applied to the inflamed area of atopic dermatitis, applied to the gangrene area due to diabetes, etc., or applied to bedsores such as bedridden elderly people, so that the healing effect is obtained. can get. It is thought that the above effect is obtained by sterilizing the MRSA that has propagated in the above sites with acidic sterilized water containing hypochlorous acid to prevent itching and suppuration in these sites. It is effective to spray sterilized water to the inflamed area in order to apply sterilized water to the above-mentioned site without excess or shortage. Applying acidic sterilized water containing a high concentration of hypochlorous acid to the skin may cause skin damage. Therefore, a highly acidic sterilizing water which is applicable to the human body and has a pH of 3 or less and contains hypochlorous acid at a low concentration of about 2 ppm specified by the Japan Water Works Association water purifier type examination standards is sprayed. A device is desired.

[0004] As an apparatus for producing hypochlorous acid-containing acidic water, an apparatus provided with a diaphragm type electrolytic cell is known. In this apparatus, a direct current voltage is applied between an anode plate and a cathode plate facing each other across a diaphragm in an electrolytic cell to electrolyze a saline solution, and an acidic solution containing hypochlorous acid near the anode plate. Produces electrolyzed water,
An alkaline electrolyzed water is generated near the cathode plate. The diaphragm prevents mixing of acidic electrolyzed water and alkaline electrolyzed water. By taking out the flowing water flowing between the diaphragm and the anode from the electrolytic cell, hypochlorous acid-containing acidic water is obtained.

[0005]

Problems to be Solved by the Invention A diaphragm type electrolytic cell has a large size because a diaphragm is interposed between electrodes. For this reason, a hypochlorous acid-containing acidic water generator equipped with a diaphragm type electrolytic cell is too large in size to be portable, so conventionally, the generated hypochlorous acid-containing acidic water is stored in a tank, and the stored hypochlorite is stored. The acid-containing acidic water was transferred to a spray device for use. Hypochlorous acid is easily decomposed by ultraviolet rays, and the chlorine component evaporates over time. For this reason, there was a problem that the sterilizing power of the hypochlorous acid-containing acidic water was reduced during storage in the tank. Since inflammation of atopic dermatitis often occurs in hidden parts of the body, it is convenient to have a hypochlorous acid-containing acidic water generating spray device that can be used in a bathroom. A hypochlorous acid-containing acidic water generator equipped with a diaphragm-type electrolytic cell has a minimum electrode spacing of about 4 mm at least due to the intervening diaphragm between the electrodes, and the electrical resistance of the saline solution existing between the electrodes is large. Since it requires a lot of power for electrolysis, it was driven by a household AC power supply. Normally, a household AC power supply is not provided in a bathroom. Therefore, a hypochlorous acid-containing acidic water generator and sprayer based on a hypochlorous acid-containing acidic water generator equipped with a diaphragm type electrolytic cell is used in a bathroom. There was a problem that it could not be used. An object of the present invention is to provide a small-sized liquid spraying device which can be used for a small-sized, low-concentration hypochlorous acid-containing strong acidic water generating and spraying device which is small and easy to carry around in view of the above problems.

[0006]

In order to solve the above problems, the present invention provides a piezoelectric element, a piezoelectric element driving device, a perforated plate having one end fixed to the piezoelectric element, and an open spray tank. And a liquid spray device characterized in that the open end of the open spray tank is covered by a perforated plate. Since the liquid spraying device according to the present invention includes the piezoelectric element, the piezoelectric element driving device, and the porous plate having one end fixed to the piezoelectric element, the liquid spraying device can be reduced in size and power consumption, and can be converted to a battery for the driving power supply. It is. INDUSTRIAL APPLICABILITY The liquid spraying device according to the present invention can be used as a small-sized and easily portable low-concentration hypochlorous acid-containing strongly acidic water generating spraying device. By providing an open spray tank in the spray device and covering the open end of the open spray tank with a perforated plate, the spray liquid supplied to the open spray tank is sprayed through the perforated plate. Since the spray liquid supplied from one side of the perforated plate is ejected from the other side of the perforated plate, a stable and good spray state can be obtained. In a preferred embodiment of the present invention, the entire surface of the perforated plate including the inner surface of the hole is coated with an acid-resistant material. By coating the entire surface of the perforated plate including the inner surfaces of the holes with an acid-resistant material, the corrosion resistance of the perforated plate to strongly acidic water can be improved. This increases the applicability of the liquid spray device according to the present invention to a low-concentration hypochlorous acid-containing strongly acidic water generation spray device. In a preferred embodiment of the invention, the distance between the perforated plate and the bottom wall of the open spray tank facing the perforated plate is from about 0.5 mm to about 1.5 mm. The distance between the perforated plate and the bottom wall of the spray tank facing the perforated plate is about 0.5 m
m to about 1.5 mm, the perforated plate is adsorbed on the bottom wall of the open spray tank due to the surface tension of the spray liquid, and the vibration of the perforated plate is stopped, or the vibration of the perforated plate is increased due to an increase in the added water mass. Regulations can be prevented. In a preferred aspect of the present invention, the power source of the piezoelectric element driving device is a battery. By using a battery as the power source of the piezoelectric element driving device, it becomes possible to use the present spraying device in a place where there is no power source such as a bathroom.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, a low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A including a liquid spraying apparatus according to the present embodiment includes a non-diaphragm type electrolytic cell 1, a liquid spraying apparatus 2, and a hand switch 3. A palm-sized electrolytic spraying unit 4, a saline solution tank 5, a waste water recovery tank 6, a pump 7, a main body 10 having a DC power supply device 8 powered by a dry battery or a rechargeable battery, and a control device 9; Supply tube 11, waste water drain tube 12, and electric wire 13 for electrolysis
a, 13b, electric wires 13c, 13d for piezoelectric elements, electric wires 13e, 13f for hand switches, and a harness 14 for connecting the main body 10 and the electrolytic spray unit 4 to each other.
The control device 9 includes: a spray device driving circuit including a constant voltage circuit and a high frequency generation circuit; an electrolytic cell driving circuit including a constant current circuit;
It has a pump drive circuit including a constant voltage circuit and a CPU.

As shown in FIGS. 2 and 3, a non-diaphragm type electrolytic cell 1, a liquid spraying device 2, and a hand switch 3 of an electrolytic spraying unit 4 are formed as a thick disk having a diameter × thickness of about 90 mm × about 35 mm. In the case 15. In case 15,
An acid mist outlet 15a is formed. The salt water tank 5, the waste water recovery tank 6, the pump 7, the dry battery or the rechargeable battery, and the DC power supply 8 and the control unit 9 of the main body 10 have a bottom having a diameter × height of about 105 mm × about 180 mm. It is housed in a cylindrical case 16. FIG. 2, FIG.
As shown in (a) and (b), the electrolytic spraying unit 4 and the harness 14 are stored in the opening of the main body 10 and
Can be taken out from the opening. FIG. 3B,
As shown in (c), a groove 15b formed in the case 15
And the flange portion 1 formed around the opening of the case 16
6a, the electrolytic spraying unit 4 can be locked to the main body 10 in the upright state.

As shown in FIGS. 4A, 5 and 6, the non-diaphragm type electrolytic cell 1 has a length × width × thickness of about 60 mm × about 50 mm.
A pressure-resistant case 17 made of a resin having a size of about 5 mm × about 5 mm and a resin pressure-resistant cover 18 having a length × width × about a thickness of about 60 mm × about 50 mm × about 7 mm are provided in two concave portions of an anode plate 19 and a cathode plate 20. Are disposed with two resin spacers 21 interposed therebetween, and the case 17 and the cover 18 are screw-connected to each other in a watertight manner. The anode plate 19 is made of a platinum-plated titanium plate, and has a size of about 20 mm × about 16 mm in length × width (excluding a contact portion with the spacer 21). The cathode plate 20 is made of a platinum-plated titanium plate, and has a dimension of about 25 mm in length and width (excluding a contact portion with the spacer 21).
X about 16 mm. The dimensions of the electrode plates 19 and 20 are determined by a set amount of electrolysis per unit time determined from a set amount of spray per unit time determined in consideration of spraying sterilized water onto an affected part occupying a relatively narrow area of the human body surface. The amount is determined in consideration of the amount of current per unit amount of electrolysis required to obtain strongly acidic water having a pH of 3 or less and the upper limit of the current density determined from the need to suppress the amount of chlorine generated. Electrode plate 19, 2
0 is a terminal (not shown) and an electric wire 13 for electrolysis of the harness 14
a and 13b are connected to the electrolytic cell drive circuit of the control device 9. A saline solution inlet 22 and an alkaline water outlet 23 are formed in the case 17, and an acidic water outlet 24 is formed in the cover 18.

A water passage 25 is formed between the anode plate 19 and the cathode plate 20. A portion near the downstream end of the water passage 25 is formed by a smooth surface 18 a extending in the same plane as the anode plate 19 formed in the concave portion of the cover 18 and a cathode plate 20. The distance between the anode plate 19 and the cathode plate 20 is about 0.
It is set to 2 mm to 0.5 mm. The distance between the electrodes is
Appropriate water flow resistance of the water flow passage 25 determined from the set amount of electrolysis per unit time and the output of the battery-driven pump 7, lowering of the interelectrode voltage for realizing electrolysis by battery driving, initial water amount at the start of spraying It is determined in consideration of, for example, reducing the amount of water retained in a non-diaphragm type electrolytic cell to reduce the amount of water. The upstream end of the water passage 25 communicates with the saline solution supply passage 26. The saline solution supply channel 26 is formed by the case 17 and the cover 18 and extends over the entire lateral length of the electrode plate. The saline solution supply passage 26 communicates with the saline solution inlet 22. The saline inlet 22 is connected to the saline tank 5 of the main body 10 through the saline supply tube 11 of the harness 14 and the pump 7 of the main body 10. The downstream end of the water passage 25 communicates with the alkaline water recovery passage 27. The alkaline water recovery channel 27 is formed by the case 17 and the cover 18 and extends over the entire length of the electrode plate in the lateral direction. The capacity of the alkaline water recovery flow path 27 is set to be sufficiently larger than the capacity of the water flow path 25. The downstream end of the alkaline water recovery channel 27 is the alkaline water outlet 23.
Is in communication with The alkaline water outlet 23 communicates with the waste water recovery tank 6 of the main body 10 through the waste water drain tube 12 of the harness 14. The cover 18 is formed with an acidic water recovery flow passage 28 extending over the entire length of the anode plate 19 in the lateral direction, adjacent to the downstream end of the anode plate 19.
The acidic water recovery flow passage 28 communicates with the acidic water outlet 24.

As shown in FIGS. 4 (a) and 4 (b), the liquid spraying device 2 has a resin cover 29 having a length × width × thickness of about 50 mm × about 50 mm × about 3 mm. Height × width × thickness is about 20mm × about 17mm × about 1mm
The piezoelectric element 30 is disposed, one surface of the piezoelectric element 30 is fixed to the cover 29, and one end of the other surface of the piezoelectric element 30 is
Length × width × thickness is about 20mm × about 17mm × about 0.05m
m, one end of the perforated plate 31 is fixed to the cover 29 and the cover 1
8 is screw-connected. The perforated plate 31 covers an open spray tank 32 which is a recess formed in the cover 18. The open spray tank 32 communicates with the acidic water recovery channel 28 via the acidic water outlet 24. A gold electrode (not shown) is attached to the one surface and the other surface of the piezoelectric element 30, and the electrode is connected to a control device via a terminal (not shown) and the piezoelectric element wires 13 c and 13 d of the harness 14. 9 are connected to the sprayer driving circuit. The perforated plate 31 is made of an acid-resistant noble metal plate of platinum, gold, silver, or the like having a large number of holes having a diameter of about 0.01 to 0.02 mm, or a large number of holes having a diameter of about 0.01 to 0.02 mm. The entire surface including the inner surface of the hole of the nickel plate having the hole formed therein is plated by physical vapor deposition or chemical vapor deposition of noble metals such as platinum, gold and silver, titanium nitride, titanium carbide, or coated with Teflon resin or the like. And having improved acid resistance. The joint between the piezoelectric element 30 and the perforated plate 31 is coated with a resin or the like to improve acid resistance. The distance between the perforated plate 31 and the bottom wall of the open spray tank 32 facing the perforated plate 31 is about 0.5 mm to about 1.5 mm. If the distance is too short, the perforated plate is adsorbed on the bottom wall of the open spray tank due to the surface tension of hypochlorous acid-containing acidic water, and the vibration of the perforated plate stops.If the distance is too long, additional water is added. It is determined in consideration of the fact that the vibration of the perforated plate is restricted by the increase in mass. The cover 29 has a perforated plate 3
An opening 29a is formed so as to face 1. The hand switch 3 is connected to the CPU of the control device 9 via the switch wires 13e and 13f of the harness 14.

As shown in FIG. 7, the harness 14 includes the above-described saline solution supply tube 11, the waste water drain tube 12,
Electric wires 13a to 13f and an inner sheath 33 for bundling them
And an outer sheath 34 for maintaining the shape. The inner diameter of the saline solution supply tube 11 is set to about 1.4 mm, and the inner diameter of the waste water drain tube 12 is about 1.0 mm.
mm. Therefore, the saline solution supply tube 1
The ratio of the channel cross-sectional area of 1 to the channel cross-sectional area of the waste water drain tube 12 is set to 2: 1. When the inner diameter of the saline solution supply tube 11 and the inner diameter of the waste water drainage tube 12 are large, when the height of the electrolytic spraying unit 4 fluctuates when the apparatus A is used, a corresponding pump is used. 7
When the load fluctuation of the pump is large, the fluctuation of the flow rate and, consequently, the fluctuation of the spray amount are large, on the contrary, if the inner diameter is small, the water flow resistance increases, the load of the pump 7 increases, and the battery of the pump drive power supply increases. It is set in consideration of the difficulty of conversion.

The operation of the liquid spraying apparatus 2 having the above-described structure and the spraying apparatus A for producing a strongly acidic water containing low-concentration hypochlorous acid will be described below. First, the user operates the main body 1 in the state shown in FIG.
Holding the electrolytic spray unit 4 stored at 0 in FIG.
As shown in (b), the electrospray unit 4 is removed from the main body 10 and the electrospray unit 4 is brought closer to an inflamed part of atopic dermatitis, a gangrene part due to diabetes or a bed sore part of a bedridden elderly person, etc.
The acidic mist outlet 15a is directed to the inflamed part, the gangrene part, the bedsore, etc., and then the hand switch 3 is pressed with the finger of the hand holding the electrolytic spray unit 4, and the control device 9 is started. The CPU of the control device 9 is started, the pump 7 is started via the pump drive circuit, the electrolytic power is supplied to the diaphragm type electrolyzer 1 via the electrolyzer drive circuit and the harness 14, and the spray device drive circuit High-frequency piezoelectric element driving power is supplied to the liquid spraying device 2 via the harness 14. As shown by an arrow in FIG. 1, the operation of the pump 7 causes the saline solution tank 5 to
The saline solution is pumped to the non-diaphragm type electrolytic cell 1 through the saline solution supply tube 11 of the harness 14.

As indicated by the arrows in FIG. 6, the saline solution flowing into the saline solution inlet 22 of the diaphragmless electrolytic cell 1 flows into the saline solution supply channel 26 and flows through the saline solution supply channel 26. It flows into the water channel 25. Between the anode plate 19 and the cathode plate 20,
A DC voltage is applied via the electrolytic cell drive circuit of the control unit 9, and the flowing saline water flowing through the water flow passage 25 is electrolyzed. Hypochlorous acid-containing acidic water is generated near the anode plate 19, and alkaline water is generated near the cathode plate 20. The ratio of the amount of hypochlorous acid-containing acidic water generated near the anode plate 19 to the amount of alkaline water generated near the cathode plate 20 is approximately 1: 1.

As shown by arrows in FIG. 6, the hypochlorous acid-containing acidic water generated near the anode plate 19 and flowing along the anode plate 19 is supplied to the anode plate 19 in the downstream region of the water flow passage 25.
And flows into an acidic water recovery flow passage 28 extending over the entire length of the anode plate 19 in the lateral direction. The hypochlorous acid-containing acidic water that has flowed into the acidic water recovery flow passage 28 is supplied to the acidic water outlet 2
4 and flows out of the diaphragmless electrolytic cell 1. As shown by the arrows in FIG.
The alkaline water flowing along 0 flows into the alkaline water recovery flow channel 27 from the downstream end of the water flow channel 25. The alkaline water flowing into the alkaline water recovery channel 27 flows out of the non-diaphragm type electrolytic cell 1 through the alkaline water outlet 23.

Through the acidic water outlet 24, the non-diaphragm type electrolytic cell 1
Hypochlorous acid-containing acidic water flowing out of the liquid spray device 2
Into the open spray tank 32 to fill the open spray tank 32. The hypochlorous acid-containing acidic water filling the open spray tank 32 is supplied to the perforated plate 3 covering the open end of the open spray tank 32.
1 soak one side. A high-frequency voltage is applied to the piezoelectric element 30 of the liquid spray device 2 via the spray device driving circuit, and the piezoelectric device 30 expands and contracts at a high frequency. The porous plate 31 fixed to the piezoelectric element 30 vibrates at a high frequency. The hypochlorous acid-containing acidic water that fills the open spray tank 32 and soaks one surface of the perforated plate 31 is atomized through a large number of micropores formed in the perforated plate 31, and From the surface, the opening 29a of the cover 29 and the acid mist outlet 15 of the case 15
and sprayed through. The sprayed hypochlorous acid-containing acidic water is applied to an inflamed area of atopic dermatitis, a gangrene area due to diabetes mellitus, or a bedsore of a bedridden elderly person and the like, and sterilizes MRSA propagated in the area. To prevent itching and suppuration of the area. The alkaline water flowing out of the non-diaphragm type electrolytic cell 1 through the alkaline water outlet 23 flows into the waste water recovery tank 6 of the main body 10 through the waste water drain tube 12 of the harness 14.

When the user presses the hand switch 3 to stop the operation of the control device after the end of spraying, the CPU of the control device 9
Is stopped, and the operations of the pump 7, the diaphragmless electrolytic cell 1, and the liquid spraying device 2 are stopped. When the operation of the pump 7 is stopped, the supply of the saline solution to the diaphragmless electrolytic cell 1 is stopped. The user supplies the saline solution to the saline solution tank 5 of the main body 10 as necessary, discharges the alkaline water from the wastewater recovery tank 6, and replaces the battery of the DC power supply device 8.

In the low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A, a small-sized electrolytic cell 1 is used to generate a low-concentration hypochlorous acid-containing strongly acidic water in a necessary amount.
In addition, the non-diaphragm type electrolytic cell 1 and the liquid spraying device 2 are integrated as an electrolytic spraying unit 4, and the hypochlorous acid-containing acidic water generated in the non-diaphragmous type electrolytic bath 1 is immediately discharged to the liquid spraying device 2 without storing. The sterilizing power of the hypochlorous acid-containing acidic water to be sprayed is always assured because it is sprayed through and used up on the spot.

In the low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A, since the anode plate 19 and the cathode plate 20 of the non-diaphragm type electrolytic cell 1 face each other without passing through the diaphragm,
The distance between the electrodes is smaller than that of a conventional generator using a diaphragm type electrolytic cell, and the electric resistance of the saline solution existing between the electrodes is smaller. Therefore, in the present apparatus A, the saline solution is electrolyzed with less electric power as compared with a generator using a conventional diaphragm type electrolytic cell. As a result, the device A is reduced in size by reducing the size of the non-diaphragm type electrolytic cell 1 by reducing the distance between the electrodes, and by reducing the size of the DC power supply device 8 and the control device 9 by reducing the power.
The entire apparatus is made compact and portable, and the electrolytic spraying unit 4 is palm-sized. Since the entire apparatus is miniaturized and portable, a user can easily carry the apparatus A to an arbitrary place and use it. Since the electrolytic spraying unit 4 is palm-sized, the user can
By holding the electrolytic spraying unit 4 connected to the main body 10 through the hand, the hypochlorous acid-containing acidic water can be applied to an arbitrary part of the body. Therefore, the usability of the device A is high.

In the low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A, the voltage applied between the electrodes is low due to the narrowing of the distance between the electrodes, and the overvoltage at the anode is low.
In addition, the flow rate of the saline solution flowing through the water passage 25 between the electrodes is large, the amount of hydroxyl ions and hydrogen ions supplied to the electrode surface is large, and the flow of water in the water passage 25 is laminar. Therefore, in the present apparatus A, electrolysis of saline solution is promoted while suppressing excessive generation of chlorine, and mixing of flowing water near the anode plate 19 and flowing water near the cathode plate 20 is suppressed.
As a result, in the present apparatus A, it is possible to generate highly acidic sterile water containing hypochlorous acid at a low concentration of about 2 ppm and having a pH of 3 or less and applicable to the human body.

In the low concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A, the distance between the electrodes between the anode plate 19 and the cathode plate 20 of the non-diaphragm type electrolytic cell 1 is reduced, so that the electrolysis voltage is reduced. Through the reduction of the voltage and the electrolytic power, the battery of the electrolytic power supply is realized. In the low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A, the distance between the anode plate 19 and the cathode plate 20 of the diaphragmless electrolytic cell 1 is set to about 0.2 mm to about 0.5 mm. Thus, not only the electrolytic power source but also the pump drive power source can be realized by optimizing the water flow resistance of the water flow passage 25. Initial water, which is a liquid sprayed from the electrolytic spraying unit 4 at the start of spraying, is electrolytically generated water that has lost sterilization power and has been retained in the open spray tank 32, the acidic water recovery flow path 28, and the water flow path 25. However, by setting the distance between the electrodes between the anode plate 19 and the cathode plate 20 of the diaphragmless electrolytic cell 1 to be about 0.2 mm to about 0.5 mm, the volume of the water passage 25 is reduced, Was suppressed.

In the low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A, the liquid spraying apparatus 2 is constituted by the piezoelectric element 30 and the porous plate 31 having one end fixed to the piezoelectric element 30. The liquid spray device 2 has been reduced in size and power consumption. The downsizing of the liquid spraying device 2 has enabled the incorporation of the liquid spraying device 2 into a small and portable low-concentration hypochlorous acid-containing, strongly acidic water generating and spraying device A. By reducing the power of the liquid spraying device 2, a battery for the spraying device driving power supply is realized. In this low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A, the porous plate 31 of the liquid spraying apparatus 2 is made of platinum,
Gold, formed by a noble metal such as silver, or the entire surface including the inner surface of the hole of the perforated plate 31 is plated by noble metal such as platinum, gold, silver, titanium nitride, titanium carbide or the like, by chemical vapor deposition, or Since the joint between the piezoelectric element 30 and the porous plate 31 is covered with a resin or the like, the liquid spraying apparatus 2 has high corrosion resistance to hypochlorous acid-containing acidic water because it is covered with a resin or the like. I have. In the low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A, the liquid spraying apparatus 2 is provided with an open spray tank 32 communicating with the acidic water recovery flow path 28 of the diaphragmless electrolytic cell 1. Of the perforated plate 31 was covered with the perforated plate 31, and flowed into the open spray tank 32 from the acidic water recovery channel 28 of the diaphragmless electrolytic cell 1, filled the open spray tank 32, and immersed one surface of the perforated plate 32. The hypochlorous acid-containing acidic water thus sprayed is sprayed from the other surface of the perforated plate 32 through a number of micropores formed in the perforated plate 32. Since the hypochlorous acid-containing acidic water supplied from one side of the perforated plate 32 is ejected from the other side of the perforated plate 32, for example, the conventional piezoelectric element disclosed in Japanese Patent Application Laid-Open No. As compared to the case where the liquid supplied to one surface of the perforated plate is sprayed from the one surface, as in the case of a spraying device composed of a plate and the like, there is no possibility that the spray is partially shielded, and the A good spray state is obtained. In the low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A, the perforated plate 31 of the liquid spraying device 2 and the perforated plate 3 of the open spray tank 32 are used.
Since the distance between the bottom wall and the bottom wall facing 1 is about 0.5 mm to about 1.5 mm, the perforated plate 31 is adsorbed on the bottom wall of the open spray tank 32 by the surface tension of hypochlorous acid-containing acidic water. As a result, the vibration of the perforated plate 31 is stopped, or the vibration of the perforated plate 31 is prevented from being restricted by the increase in the added water mass.

In the low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A, the ratio of the amount of salt water supplied to the electrolytic cell 1 to the amount of alkaline water flowing out of the electrolytic cell 1 is almost 2 In view of the one-to-one ratio, the cross-sectional area of the saline solution supply tube 11 included in the harness 14 and the wastewater drainage tube 12
Is 2: 1, the flow of the saline solution in the saline solution supply tube 11 and the flow of the alkaline water in the waste water drain tube 12 are both smooth. In the low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A, since the electrolytic spraying unit 4 and the harness 14 are stored in the opening of the main body 10, the entire apparatus is integrated, downsized, and portable. Was done. The low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A is constituted by a groove 15b formed in the case 15 of the electrolytic spraying unit 4 and a flange 16a formed around the opening of the case 16. Since the locking device is provided, spraying in a state where the electrolytic spraying unit 4 is locked to the main body 10 becomes possible. As a result, it became possible to spray the germicide on the affected part without holding the electrolytic spray unit 4 in hand. In the low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A, the electrolytic spraying unit 4
Is provided with the hand switch 3 connected to the control device 9 of the main body 10, so that the user can operate the device with the hand holding the electrolytic spraying unit 4, and the device A
Operability has been improved. In the low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A, the DC power supply 8 is a battery-type power supply, so that the apparatus A can be used in a bathroom.

Using the low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus A, four alkaline batteries (6 V) were used as a DC power source, and the pump 7 was controlled at a constant voltage of 4 V to supply salt to the electrolytic cell 1. A saline solution having a concentration of 400 ppm (mg / liter) is supplied at a flow rate of 40 to 50 cc / min, the electrolytic cell 1 is controlled at a constant current of 0.15 A, and the liquid spray device 2 is controlled at a constant voltage of 12 V to produce a piezoelectric element. When a high-frequency voltage of 20 to 45 kilohertz is applied to the 30, strongly acidic water having a low concentration of about 2 ppm and containing hypochlorous acid and having a pH of 3 or less is sprayed at a spray rate of 20 to 25 cc / min. Sprayed from.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. For example, in the diaphragmless electrolytic cell 1, as shown in FIG. 8, a water passage 25 downstream of the acidic water recovery passage 28 may be formed by the case 17 and the cover 18, as shown in FIG. To
The acidic water recovery flow path 28 is communicated with the downstream end of the water flow path 25, and the alkaline water recovery flow path 27 is formed in the case 17 adjacent to the downstream end of the cathode plate 20 in the downstream area of the water flow path 25. Is also good. As shown in FIG. 10, the smooth surface 18a
May be slightly offset from the anode plate 19 in a direction away from the cathode plate 20. Since the alkaline water near the cathode plate 20 flows along the cathode 20, the acidic water near the anode plate 19 flows into the acidic water recovery flow path 28. As shown in FIG. 11, a portion near the downstream end of the water flow passage 25 is provided with a smooth surface 18 a of the cover 18 extending flush with the anode plate 19 and the anode plate 1.
9 may be formed by the smooth surface 17 a of the case 17 slightly offset from the cathode plate 20 in a direction away from the cathode plate 20. Since the alkaline water near the cathode plate 20 flows along the cathode 20 and the smooth surface 17a, the acidic water near the anode plate 19 flows into the acidic water recovery flow passage 28.

The pump 7, the electrolytic cell 1, and the liquid spraying device 2 are controlled in accordance with a control program stored in advance in a storage medium in the control device 9 so that spraying continues until a predetermined time has elapsed after the electrolysis is stopped. Is also good. As a result, the hypochlorous acid-containing acidic water existing in the open spray tank 32 at the end of use of the present apparatus A can be used up, and the amount of initial water having no sterilizing power at the start of the next use can be reduced. A polarity reversing circuit is provided in the electrolytic cell driving circuit, and according to a control program stored in advance in a storage medium in the control device 9, when the electrolysis is stopped, the polarity of the voltage applied between the electrodes of the diaphragm type electrolytic cell 1 is changed. The electrolyzer 1 may be controlled so that the electrolysis is performed for a short time after inversion, and then the electrolysis is stopped. Thereby, the adhesion of the scale to the cathode plate 20 can be suppressed.

A compressor may be connected to the saline solution tank 5 instead of the pump 7. In this case, the saline solution pressurized by the operation of the compressor is supplied to the non-diaphragm type electrolytic cell 1.
To be pumped. In this case, an on-off valve controlled by the control device 9 or an on-off valve controlled manually is provided downstream of the saline solution tank 5 so as to connect to the non-diaphragm type electrolytic cell 1. It is desirable to supply and stop supplying the saline solution. By disposing the on-off valve, the supply of the saline solution to the non-diaphragm type electrolytic cell 1 and the stop of the supply are performed without any trouble. When a manually controlled on-off valve is provided, the apparatus A may be started and stopped by the on-off valve. The harness 14 may be eliminated, and the non-diaphragm type electrolytic cell 1 and the liquid spray device 2 may be installed in the main body 10. In this case, the main body 10
The spraying is performed by directing the acidic mist outlet communicating with the opening 29a of the liquid spraying device 2 installed therein toward the affected part. In the salt solution tank 5, a mesh bag containing an Na-Ca substitution type ion exchange resin or an H-Ca substitution type ion exchange resin may be stored. As a result, calcium ions in the saline solution are removed, and adhesion of scale to the cathode plate 20 is suppressed.

The liquid spray device 2 can be used as an independent liquid spray device. By attaching a piezoelectric element drive circuit including a high frequency generation circuit, a DC power supply, a water storage tank, and a conduit connecting the water storage tank and the open spray tank to the liquid spraying device 2, a stable and good spraying state is obtained. , A small-sized and low-power independent liquid spraying device is provided.

[0029]

The liquid spraying apparatus according to the present invention comprises a piezoelectric element, a piezoelectric element driving device, and a porous plate having one end fixed to the piezoelectric element.
As a result, the drive power supply can be converted to a battery. INDUSTRIAL APPLICABILITY The liquid spraying device according to the present invention can be used for a small and portable low-concentration hypochlorous acid-containing strong acid water generating spraying device. By providing an open spray tank in the spray device and covering the open end of the open spray tank with a perforated plate, the spray liquid supplied to the open spray tank is sprayed through the perforated plate. Since the spray liquid supplied from one side of the perforated plate is ejected from the other side of the perforated plate, a stable and good spray state can be obtained. By coating the entire surface of the perforated plate including the inner surfaces of the holes with an acid-resistant material, the corrosion resistance of the perforated plate to strongly acidic water can be improved. This increases the applicability of the liquid spray device according to the present invention to a low-concentration hypochlorous acid-containing strongly acidic water generation spray device. By setting the distance between the perforated plate and the bottom wall of the spray tank facing the perforated plate to about 0.5 mm to about 1.5 mm, the perforated plate is adsorbed on the bottom wall of the open spray tank by the surface tension of the spray liquid. The vibration of the perforated plate stops,
Alternatively, it is possible to prevent a situation in which the vibration of the perforated plate is regulated by the increase in the mass of the additional water. By using a battery as the power source of the piezoelectric element driving device, it becomes possible to use the present spraying device in a place where there is no power source such as a bathroom.

[Brief description of the drawings]

FIG. 1 is a device configuration diagram of a low-concentration hypochlorous acid-containing strongly acidic water generating and spraying device including a liquid spraying device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the entire configuration of a low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus including a liquid spraying apparatus according to an embodiment of the present invention.

FIG. 3 is a perspective view of a low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus including the liquid spraying apparatus according to the embodiment of the present invention. (A) is a diagram showing a state in which the electrolytic spraying unit is stored in the main body, (b) is a diagram showing a state in which the electrolytic spraying unit is removed from the main body, and (c) is a diagram in which the electrolytic spraying unit is locked to the main body. It is a figure showing the state where it was made to do.

FIG. 4 is a structural view of an electrolytic spraying unit of a low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus equipped with a liquid spraying apparatus according to an embodiment of the present invention. (A) is a sectional view, and (b)
FIG. 4 is a view taken along the line bb in FIG.

FIG. 5 is a perspective view of an electrolytic cell included in the electrolytic spray unit of FIG.

6 is a perspective view in which an electrolytic cell of the electrolytic spray unit of FIG. 4 is divided into an anode side and a cathode side.

FIG. 7 is a cross-sectional view of a harness of a low-concentration hypochlorous acid-containing strongly acidic water generating and spraying apparatus including the liquid spraying apparatus according to the embodiment of the present invention.

FIG. 8 is a cross-sectional view corresponding to FIG. 4A showing a modification of the electrolytic cell.

FIG. 9 is a sectional view corresponding to FIG. 4A showing a modification of the electrolytic cell.

FIG. 10 is a cross-sectional view corresponding to FIG. 4A showing a modification of the electrolytic cell.

FIG. 11 is a cross-sectional view corresponding to FIG. 4A showing a modification of the electrolytic cell.

[Explanation of symbols]

 A low concentration hypochlorous acid-containing strong acid water generating and spraying device 1 electrolytic bath 2 liquid spraying device 3 hand switch 4 electrolytic spraying unit 5 saline solution tank 6 waste water recovery tank 7 pump 8 DC power supply 9 control device 10 main body 14 harness

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification FI FI Theme Court ゛ (Reference) (72) Inventor Hidemine Miyahara 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City Higashi Toki Equipment Co., Ltd. (72 Inventor: Shigeru Ando 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi

Claims (4)

[Claims] 1. A piezoelectric element, a piezoelectric element driving device, a porous plate having one end fixed to the piezoelectric element, and an open spray tank, wherein the open end of the open spray tank is covered by the porous plate. Characteristic liquid spraying device. 2. The liquid spraying apparatus according to claim 1, wherein the entire surface of the perforated plate including the inner surfaces of the holes is coated with an acid-resistant material. 3. The distance between the perforated plate and the bottom wall of the open spray tank facing the perforated plate is about 0.5 mm to about 1.5 mm.
The liquid spraying device according to claim 1, wherein: 4. The liquid spraying apparatus according to claim 1, wherein a power source of the piezoelectric element driving device is a battery.