JP3600475B2 - Ozone sterilizer and ozone sprayer - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an ozone sterilizing apparatus for pressurizing ozone and spraying, mixing and sterilizing it with a liquid such as feed water, or for sterilizing, deodorizing, and maintaining freshness, and an ozone spraying apparatus used in this apparatus.
[0002]
[Prior art]
When ozone (O ₃ ) is used for sterilization, sterilization, deodorization, freshness maintenance, etc. (hereinafter referred to as sterilization, etc.), it is directly discharged into the air and sprayed (gas phase) or mixed with a liquid such as water. Although it is used as ozone water (liquid phase), ozone is harmful to the human body if directly inhaled, although it depends on the amount, and the latter is generally used as ozone water from the viewpoint of safety. Ozone water with a small amount of ozone dissolved in water can be used as it is for water in baths and pools, or can be sprayed with a nozzle and sprayed on the target and used for sterilization, etc. Many are generally made with large equipment, the latter being made with small, medium and portable equipment.
[0003]
A disinfection (deodorization) device by nozzle spray is a water tank system that sends ozone into water stored in a water tank and sprays ozone water mixed with ozone from an injection nozzle or outlet provided in the tank with a spray nozzle, and a water supply tank. There is known a pressurized water system in which ozone is pressure-fed to processing water such as water by an air pump or the like to be dissolved in pressurized water, and the ozone water is sprayed by a spray nozzle. In the water tank type sterilizer, the water supply pressure is released to the atmospheric pressure in the water tank, so ozone is easy to mix with water, but it takes a certain amount of time to reach a predetermined concentration, and it takes a long time before it can be used. There is a time lag.
[0004]
The pressurized water sterilizer is directly connected to tap water, and ozone cannot be mixed in the pressurized state of tap water, so ozone is pumped into pressurized water that has been reduced in pressure to below the pressure of the ozone delivery pump by a pressure reducing valve to dissolve ozone. However, because pressurized water has a poor ozone dissolving efficiency and does not readily dissolve into it, in order to obtain high-concentration ozone water, the ozone generation rate of the ozone generator was increased using an oxygen cylinder, and high-concentration ozone was pumped to the pressurized water There are also things.
[0005]
[Problems to be solved by the invention]
By the way, regardless of the sterilization apparatus using a nozzle spray of either a water storage tank system or a pressurized water system, the concentration of ozone contained in water is generally about 0.5 ppm in a medium-sized and small-sized system, and ozone is extremely hard to dissolve in water. . When spraying ozone water containing such a trace amount of ozone with a spray nozzle to sterilize an object or the like, ozone is further diffused into the atmosphere from the spray water spread from the nozzle, and is thus sprayed on the object. The ozone concentration remaining in the spray water and effectively contributing to the action such as sterilization is further reduced.
[0006]
Objects that can utilize the action of sterilization by ozone and the like are widespread in various fields, and the effect of sterilization by ozone and the like is 0.1 ppm or 0.05 ppm or less, which is considered to be sufficiently effective. The sterilization device using the nozzle spray of the above method also improves the generation efficiency of the ozone generator itself in order to secure the effects of the above sterilization, and also uses high-concentration oxygen from an oxygen cylinder as the gas sent to the ozone generator. Or, in the pressurized water method, the pressure of the pressurized water is reduced by a pressure reducing valve to increase the dissolution rate of ozone.
[0007]
For this reason, even though the entire sterilizer is medium / small / portable, it is quite large, and its equipment components are many and complicated, so the cost is high, and the efficiency of sterilization etc. exceeds the certain limit. Not even a thing. In addition, the efficiency of ozone generation due to the improvement of the ozone generator itself is close to the limit, and it is impossible to improve the efficiency of any of the above two conventional sterilizers.
[0008]
This invention pays attention to the above-mentioned problem of the conventional ozone water type sterilizer, and mixes and sprays an ozone-containing gas when spraying a liquid with a nozzle without dissolving a gas containing ozone into the liquid. It is an object of the present invention to obtain an ozone sterilizer capable of dramatically improving the efficacy of sterilization or the like by the use of an ozone sterilizer.
[0009]
Another object of the present invention is to provide an ozone spray device which is used in the above-mentioned ozone sterilization device and which can mix and spray an ozone-containing gas and a liquid to greatly enhance the effectiveness of ozone sterilization and the like.
[0010]
[Means for Solving the Problems]
As a means for solving the above-mentioned problems, the present invention sends a gas of a predetermined pressure and a flow rate from an air pump to an ozone generator, and sends a gas containing ozone generated by the ozone generator to a spray nozzle at the above-described pump pressure. Connected so that liquid can be supplied from the supply source to the spray nozzle in parallel, and the spray nozzle has gas and liquid conduction paths inside independently, and the outlet end of each conduction path is concentric with the position facing the jet port. And an ejector means capable of sucking the liquid by the fluid energy of the gas with respect to the ejection port, and the concentric outflow end of the passage of the spray nozzle is provided with the gas containing ozone at the center side and the liquid at the outer periphery side. The ozone sterilizing apparatus is configured so as to be electrically connected, and configured to spray ozone-containing gas sent to the spray nozzle together with a liquid from an ejection port to sterilize ozone.
[0011]
In the ozone sterilizer of the present invention, the ozone generated by the ozone generator is sprayed together with the liquid by the two-fluid spray nozzle as it is, so that a strong sterilizing action is exerted on the object. In addition, this disinfection also includes actions of disinfecting, deodorizing, and maintaining freshness (hereinafter referred to as disinfection, etc.). While the air sent by the air pump passes between the electrodes of the ozone generator, silent discharge acts on the oxygen in the air to generate ozone, and this ozone-containing gas is sent to the spray nozzle by the pump pressure sent. Sent. The ozone generator may have an ozone generation rate of a conventional general level, or more preferably an improved ozone generation rate having a high efficiency.
[0012]
In the spray nozzle, a gas such as ozone and the separately supplied water such as water supplied by the pump pressure move to the outflow end through independent conduction paths, and are sprayed from the outlet. As a driving method for ejecting the gas and the liquid, when the gas is ejected from the spray nozzle, the liquid is sucked by the ejector effect by the fluid energy to make the gas and the liquid into a spray flow .
[0013]
Spray nozzle of the invention is spraying the gas and liquid above SL manner from the ejection port, the outflow end of each conductive path is provided concentrically at a position facing the ejection port, exits the outlet end At this point, the gas and the liquid are atomized and ejected from the ejection port. Since the ozone-containing gas atomized in this manner is generated by the ozone generator and sent as it is by pressure feed, the ozone-containing gas sent without passing through the step of dissolving ozone in water like ozone water is sent. Is ejected from the spray nozzle. For this reason, the spray flow of the injected gas and liquid has a high ozone content, and the residual ozone concentration becomes high when the spray flow is sprayed on an object, so that the effectiveness of ozone sterilization and the like is dramatically increased.
[0014]
At the same time as the spray nozzle, since formed so as to conduct, especially the ozone containing gas toward the center side concentric outflow end of the conductive paths, the liquid on the outer peripheral side and the center side of the ozone-containing gas is injected directly, the outer periphery thereof The side is injected concentrically surrounded by a spray flow of liquid. For this reason, the ozone-containing gas on the center side is hardly diffused out of the spray flow of the liquid and is scattered on the target object.
[0015]
An ozone spray device according to a second aspect of the present invention that solves the second problem includes a container for storing a liquid, a liquid supplied through a connecting pipe connected to the container, and a gas containing ozone supplied from the outside. A spray nozzle for spraying, wherein the spray nozzles have independent gas and liquid paths inside, and the outlet end of each path is concentric at the jet outlet position, and the spray nozzle is configured to discharge the liquid by gas fluid energy. Is provided so as to form ejector means capable of sucking the gas, the concentric outflow end of the conduction path of the spray nozzle is made to conduct gas containing ozone to the center side, and liquid to the outer periphery side. The gas contained is sprayed together with the liquid from the jet port .
[0016]
In order to make this spray device small and portable, a liquid storage container is connected to a spray nozzle by a connecting pipe, the spray nozzle is provided with a concentric outlet end in a conduction path, and this outlet end forms ejector means. The liquid is sucked by the fluid energy of the ozone-containing gas to form a spray flow.
[0017]
Embodiment
Hereinafter, embodiments of the present invention will be described. FIG. 1 is an overall schematic configuration diagram of the ozone sterilizing apparatus of this embodiment. The one shown in the figure is a small portable type. This small portable ozone sterilizer is provided with an air pump 1 that sucks air in the atmosphere and sends it out as air at a predetermined pressure and flow rate, and uses the supplied air as a working fluid. An ozone generator 2 which acts on oxygen (O ₂ ) in air to generate ozone (O ₃ ) by the principle of silent discharge, and a gas containing the generated ozone is sent by the pressure of the pump to convert gas and liquid. A spray nozzle 3 for spraying and spraying two fluids is provided.
[0018]
The ozone generator 2 may be of a type that has been widely used in the past, and may be any type that can generate ozone as efficiently as possible. As shown in FIG. 1, a high-voltage power supply 4 that supplies high-voltage power to high-voltage electrodes is connected to the ozone generator 2, and an AC power is supplied from a commercial power supply 5. The power supply frequency may be the same as that of the commercial power supply 5, or may be a high-voltage power supply 4 with an inverter incorporated therein, for example, converted into a high-frequency high voltage of about several KHz and supplied.
[0019]
In general, the conventional ozone generator 2 generally generates heat during the ozone generation operation. Therefore, cooling fins are provided on the outer periphery of the two electrodes, and cooling air from the cooling device 6 is provided on the outer periphery of the electrodes. The cooling device 6 is connected so that the gas flows. The cooling device 6 can be omitted if the ozone generator 2 does not generate high heat by improvement. FIG. 2 shows a main cross-sectional view of the spray nozzle 3 in detail. The spray nozzle 3 is connected to a pipe 2p for feeding a gas containing ozone and a supply pipe 3p for supplying water stored in a container 7. 7a is an air pipe for releasing the container 7 to the atmosphere.
[0020]
The illustrated spray nozzle 3 includes a nozzle body 3a and a nozzle cap 3b, and the nozzle cap 3b is joined to a screw portion 31 formed at one end of the nozzle body 3a so as to be freely screwed. At the center of the nozzle body 3a, a conducting path 32 for passing gas containing ozone is provided, and at a position slightly deviated from the center so as not to intersect with this, a vertical conducting path 33 penetrates vertically in the state shown in the drawing. It is open at the opening 34.
[0021]
The conduction path 33 is connected to the horizontal conduction path 33h at a position slightly higher than 32, and the end of the conduction path 33h has a constant inclination in cross section between one end of the nozzle body 3a and the inner periphery of the nozzle cap 3b. It is connected to a conical groove 35 formed with an angular taper. The protruding end 32a of the conduction path 32 is formed as an outflow end of the fluid so as to protrude from the end of the nozzle body 3a as shown in the figure, and the protruding end is concentric with the ejection port 36 provided in the nozzle cap 3b. The tip of the protruding end 32 a is located slightly behind the ejection port 36. A gap 35a for ejecting water is provided on the entire periphery by a predetermined length parallel to the ejection direction between the outer periphery of the projecting end portion 32a concentric with the ejection opening 36 and the inner periphery of the ejection opening 36. ing.
[0022]
In addition, since the spray nozzle has two members, the nozzle body 3a and the nozzle cap 3b, which are detachable, and the conduction paths 32, 33, 33h are linear, the conduction paths 32, 33, 33h provided in the nozzle body 3a are Since machining is easy, the fluid resistance of each conduction path is small, and there is no portion where each conduction path crosses, it can be manufactured without special processing. The features of these internal structures are the same for the spray nozzles of FIGS. 3 and 5 described later.
[0023]
In the actual apparatus, two sets of containers 7 are provided for replacement, and the supply pipe 3p is attached to the container cap 7b. The container cap 7b is detachable from the container 7 by the screw portion 7c. Therefore, at the time of replacement, the container cap 7b is removed and screwed to another container 7 storing water.
[0024]
The ozone sterilizing apparatus having the above-described configuration exerts a sterilizing effect by sucking and spraying a liquid such as water with a spray nozzle by using the fluid energy of a gas containing ozone as a driving source, and spraying the liquid onto an object. This sterilization includes sterilization, deodorization, and freshness maintenance (hereinafter referred to as sterilization, etc.). Air in the atmosphere is sent from the air pump 1 to the ozone generator 2 at a predetermined pressure and flow rate. In the ozone generator ₂ , electrons are generated in oxygen O ₂ contained in the air by silent discharge at a high voltage between two electrodes. The collision generates ozone, and a gas containing the ozone is sent to the spray nozzle 3 at a pressure sent by the pump.
[0025]
The spray nozzle 3 uses the fluid energy of the gas flowing out from the protruding end 32a of the passage 32, which is the outflow end of the fluid, as a driving source to suck the liquid passage 33h communicating with the jet port 36 by the outflow gas. At this time, if the opening 34 at the upper end of the vertical conduction path 33 is open, the suction pressure of the conduction path 33h only sucks the atmosphere and cannot suck the liquid. However, when the opening 34 is closed by a person's finger during the operation of the gas, the communication with the atmosphere is cut off. Spray from.
[0026]
In this case, the gas containing ozone ejected from the protruding end 32a of the concentric conduction path is also sprayed in a mist, but the gas containing ozone on the center side tends to spread somewhat at the moment when it comes out from the protruding end 32a. Most of the fluid flows in the form of a fine mist and flows on the center side, and on the outside, the sucked liquid flows concentrically around the mist and the gas containing ozone on the center side flows into the mist of the fluid. The diffused material flows while being mixed little by little and is scattered to the object.
[0027]
By the way, ozone (O ₃ ) is an unstable gas, which changes into stable oxygen in the atmosphere in a short time, and its oxidizing power can be used for sterilization, antiseptic, insect repellent, and other effects. Although it is used in various fields such as sterilization of foods and cooking machines, on the other hand, as is well known, high concentrations of ozone are extremely toxic and harmful to the human body. Careful attention is required from the viewpoint of safety in handling such as being regulated to be below a certain concentration.
[0028]
Under such circumstances, when using ozone for sterilization, conventionally, ozone water obtained by dissolving ozone in water is used as it is, or a single-fluid spray nozzle for spraying and spraying with a nozzle has been used. However, in this conventional method, the ratio of ozone that can be dissolved in water is extremely small, not more than a certain value (for example, 0.5 ppm or less). The ratio of residual ozone at the time of spraying becomes extremely small, and even if there is some effect such as sterilization, the effect of sterilization is weak, and it is necessary to lengthen the spraying time to obtain a certain effect.
[0029]
On the other hand, in the ozone sterilizer of the above embodiment, the ozone is directly sprayed in large quantities from the nozzle directly without dissolving the content generated by the ozone generator into the water, and the water is sucked by the fluid energy of the gas. Since they are sprayed at the same time, the spray amount of ozone is overwhelmingly larger than in the conventional method. Further, in the spray nozzle of this embodiment, the gas containing ozone is disposed at the center side of the concentric ejection port, and the water spray flow is disposed outside the gas nozzle. Around the outside.
[0030]
Therefore, even if the gas containing ozone is slightly diffused before being sprayed on the object, the rate of diffusion to the outside due to the spray flow of water surrounding the outside is extremely small, so that the operation of operating the nozzle It hardly diffuses so as to come in direct contact with the person, and has extremely high safety and a high residual ozone ratio, so that the power of sterilization and the like becomes strong. Further, in the case of removing odors from a trash box or the like in a kitchen or the like, even if the ozone alone is injected, the ozone diffuses to the surroundings because the ozone is collected at the injection pressure.
[0040]
【The invention's effect】
As described in detail above, the ozone sterilizer of the first invention sends two fluids, the ozone-containing gas from the ozone generator and the liquid from the liquid supply source, to the spray nozzle, and establishes independent passages in the spray nozzle. Because the fluid containing the ozone-containing gas is conducted concentrically at the position of the through-hole and the fluid is conducted to the outer peripheral side and sprayed , the outside of the flow of the ozone-containing gas is surrounded by a water spray flow. , The ozone hardly comes into direct contact with the worker, and therefore the safety is high and the residual ozone ratio is high, so that a strong sterilizing power can be obtained.
[0041]
The ozone spray device according to the second invention is used in the ozone sterilization device according to the first invention, and particularly, by forming an ejector means at a concentric outflow end of a conduction path, a liquid is sucked from a container by fluid energy of an ozone-containing gas. The spray flow can be used, and the spray device can be made small and portable, and the advantages of strong ozone sterilization and the like can be obtained.
[Brief description of the drawings]
FIG. 1 is an overall schematic configuration diagram of an ozone sterilizer according to a first embodiment. FIG. 2 is a main cross-sectional view of an injection nozzle.
DESCRIPTION OF SYMBOLS 1 Air pump 2 Ozone generator 3, 3 ', 3 "Spray nozzle 4 High voltage power supply 7 Container 32 Conductive path 33 Vertical conductive path 34 Opening 35 Conical groove 36 Spout

Claims (4)

A gas having a predetermined pressure and a flow rate is sent from the air pump to the ozone generator, the gas containing ozone generated by the ozone generator is sent to the spray nozzle at the above pump pressure, and the liquid is supplied from the liquid supply source to the spray nozzle in parallel. The spray nozzles are connected so that the gas and liquid passages are independent of each other, the outlet end of each passage is concentric with the position facing the spout, and the spray nozzle is connected to the spout by the fluid energy of the gas. Is provided so as to form ejector means capable of sucking the gas, the concentric outflow end of the conduction path of the spray nozzle is made to conduct gas containing ozone to the center side, and liquid to the outer periphery side. An ozone sterilizer configured to spray ozone containing gas from a jet port together with a liquid to sterilize ozone. According to claim 1, characterized in that a periphery and an outlet end within the periphery of the liquid concentric outflow end of the conductive paths of the gas in the ejection direction parallel to a predetermined length of the nozzle at a position facing the ejection port Ozone sterilizer. The ozone sterilizer according to claim 1 or 2 , wherein the spray nozzle is formed by a nozzle body and a nozzle cap, and a concentric outflow end of the conduction path is provided facing an ejection port of the nozzle cap. A container for storing the liquid, a spray nozzle for spraying a liquid supplied through a connecting pipe connected to the container and a gas containing ozone supplied from the outside, and the spray nozzle has a gas and a liquid therein. Are provided independently so that the outflow end of each conduction path is concentric at the ejection port position , and the ejection port is formed so as to form ejector means capable of sucking liquid by the fluid energy of gas . The concentric outflow end of the conduction path is configured to conduct gas containing ozone to the center side and liquid to the outer periphery side, and the ozone-containing gas sent to the spray nozzle is sprayed together with the liquid from the ejection port. Ozone spray device.

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