KR20170094984A - Spraying Type Sterilization Apparatus And Method By Complex Disinfectant Fluids - Google Patents

Abstract

The present invention relates to an apparatus and method for sterilization which improves sterilization efficiency through enhancing the generation of OH radicals by using a reaction of chemicals such as hydrogen peroxide with ozone. The apparatus comprises: a means for storing a liquid disinfectant (T1); a means for supplying carrier gas which transports the disinfectant (T2); a means for generating ozone (T3); a means for mixing the generated ozone with the disinfectant (T4); a means for turning the liquid disinfectant into fine liquid droplets and spraying the same with the carrier gas (T5); and a means for generating atmospheric pressure plasma through which the sprayed fine liquid droplets and the carrier gas pass to generate gaseous ozone, and which activates the fine liquid droplets (T6). According to the present invention, the T3/T4 or T6 may be eliminated when necessary, and the finally sprayed composite disinfectant fluid comprises fine particles of the liquid disinfectant, ozone (gaseous, liquid, or a combination thereof), and the carrier gas.

Description

TECHNICAL FIELD [0001] The present invention relates to a disinfecting fluid sterilizing apparatus and method,

The present invention relates to a sterilization apparatus and method, and more particularly, to a sterilization apparatus and a sterilization method which increase the efficiency of sterilization by promoting the generation of OH radicals by using a reaction between a drug such as hydrogen peroxide and ozone.

In particular, the present invention relates to a method of using a sterilizing agent in the form of liquid (liquid) microparticles without using a disinfectant in the form of gas, and applying ozone and plasma in combination as needed.

Traditionally, sterilization or sterilization apparatuses use high temperature steam, and there are a method using ethylene oxide (ETO) gas, a method using ozone and water, a method using hydrogen peroxide vapor, a method using hydrogen peroxide and plasma. In recent years, various attempts have been made to improve sterilization efficiency by various combinations of ozone, hydrogen peroxide, plasma, ultraviolet (UV), and photocatalyst (TiO ₂ ).

 The supply of chemicals is largely supplied in the form of vapor, gas bubbler, and liquid (mist).

The high concentration of hydrogen peroxide is a toxic substance in handling, and direct contact between the sterilizing object and the plasma may cause electrostatic damage by electric field and surface damage by plasma. Ozone is involved only in the decomposition process of limited organic bonds, or is consumed in the oxidation reaction of metal, which is disadvantageous in that it takes a long time for the sterilization treatment.

As a sterilization method using hydrogen peroxide, there is a case of Shinan No. 20-0303495 registered in the Republic of Korea and hydrogen peroxide vapor above atmospheric pressure is used to increase sterilization efficiency.

On the other hand, there have been various attempts to sterilize ozone using the strong oxidizing power. Ozone has a higher oxidation-reduction level (2.07 eV) next to fluorine (F, 2.87 eV), hydroxyl group (OH, 2.85 eV) and is known to be a stronger oxidizer than hydrogen peroxide (H ₂ O ₂ , 1.77 eV).

Documents using ozone include Korean Patent No. 10-0737210, US 2004/0161361 A1, JP 2005-211095A, JP 2008-104488A, JP 2005-211095A JP 2008-104488A, and the like. However, ozone has a disadvantage in that the sterilization reaction time is slow and the speed variation in the decomposition process is large depending on the type of organic matter.

In addition, documents such as US 4988884, US 5069880, and US 5334355, which are intended to sterilize ozone and water vapor, have also been proposed. (WO 2005/023319 A2)

U.S. Patent No. 4,643,876 discloses a method of using plasma, and discloses a method of sterilizing plasma generated in an airtight container as a whole. However, there is a disadvantage that the surface of the sterilizing object is damaged due to the direct contact of the plasma. The literature for improving this is U.S. Patent No. 6,458,321 and Korean Patent No. 10-0458112.

Korean Patent No. 10-0913632 discloses a method using ozone and plasma. This document proposes a method in which decompression, water injection, ozone injection, and internal gas are sequentially circulated in a sealed container to expose the plasma.

Methods using hydrogen peroxide, ozone, and plasma include JP2006-204889. There has been disclosed a sterilization method in which hydrogen peroxide and water are first vaporized into a decompressed chamber, then ozone is injected, and a plasma is generated by decompressing the gas so as to facilitate gas discharge at a frequency in the RF band after a certain period of time. At this time, the plasma has a disadvantage in that the object to be sterilized is directly affected by the plasma by generating the plasma on the entire inside of the chamber.

Korean Patent Laid-Open Publication No. 10-2012-0028413 discloses a method of maintaining a sealed container at a pressure of atmospheric pressure or below, activating hydrogen peroxide by a low-temperature plasma in a state of hydrogen peroxide, and additionally introducing ozone at a separate inlet have. However, this method is disadvantageous in that the hydrogen peroxide in the gaseous phase is decomposed while passing through the plasma to reduce the disinfection performance.

In Korean Patent No. 10-1250748, at the atmospheric pressure, the inlet for spraying the hydrogen peroxide water into the fine particles on the side of the closed container and the plasma generating the ozone and the OH radical are mounted on the other side at the same time, . In addition, the gas circulation system is used to circulate gas inside the medical device. At this time, the plasma is involved only in a part of the gas circulating inside the vessel, the amount of generated ozone is small, and hydrogen peroxide is activated and then moved.

The above-described technique is fundamentally a method using a sealed container, and the majority of them are characterized in that sterilization is performed under a reduced pressure at atmospheric pressure or lower.

As a method of sterilizing the exposed place rather than the airtight container, a method of spraying hydrogen peroxide or a sterilizing agent is mainly used. This method has the merit of simplifying the apparatus because it eliminates the closed container and the decompressing process of the closed container have. Representative examples of such a method include the documents of US 7008592 B2 and US 6969487 B1. Here, the disinfectant is sprayed with fine particles and then the microparticles are exposed to the activation energy to further activate the disinfectant to sterilize the entire exposed surface or space.

However, it is difficult to pass liquid fine particles through a small plasma region, and when the liquid is condensed, it is difficult to apply the plasma by disturbing the electrical characteristics between the electrodes generating the plasma. Therefore, until now, the method of activating the liquid fine particles of the disinfectant by radicals or the like has been practiced by generating a high-voltage electric arc between the two sharp electrodes so that the liquid fine particles passing through the area are passed through this area. The method using ultraviolet rays is also effective, but ultraviolet energy is considered to be insufficient for activating the fine particles to be sprayed in a short time.

This method also tends to form OH radicals when the fine particles pass through the arc discharge, but tend to be exhausted before reaching the surface of the sterilizing object due to the short lifetime of OH radicals. Therefore, there is a disadvantage that sterilization effect can be generated if the injection speed is fast and must be maintained.

Therefore, in the present invention, in order to sterilize the surface or space exposed to the outside, a spraying or spraying process of a relatively simple disinfectant is used as a basic process and a sterilization agent, ozone, or plasma is used in combination . More specifically, it is characterized in that liquid fine particles of the disinfectant and ozone are used at the same time, and an activation reaction occurs after the disinfectant fluid reaches the surface of the object to be sterilized. At this time, the ozone is supplied by ozone generated in gas phase, liquid phase ozone, or ozone generated in passing through plasma.

Japanese Patent Publication JP2006-204889

Korean Patent Publication No. 10-2012-0028413

Korean Patent No. 10-1250748

US Patent Publication No. US 7008592 B2

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a disinfection and sterilization apparatus and a sterilization method which are excellent in sterilization power and simple in apparatus.

The above object is solved by a method for producing

Storage means (T1) of liquid disinfectant;

A carrier gas supply means (T2) for moving the disinfectant;

Means (T3) for generating ozone;

Means (T4) for mixing the generated ozone with the disinfectant;

 And means (T5) for making said liquid sterilization agent into liquid fine particles and spraying said liquid sterilization agent with said carrier gas,

Wherein the final disinfection fluid comprises a liquid disinfecting agent microparticle, ozone (gaseous, liquid or a combination thereof), and a carrier gas.

The above object is also achieved by a process for producing

Storage means (T1) of liquid disinfectant;

A carrier gas supply means (T2) for moving the disinfectant;

Means (T5) for making said liquid sterilization agent into liquid fine particles and spraying said liquid sterilization agent together with said carrier gas;

And atmospheric pressure plasma generating means (T6) for generating the vapor ozone by passing the liquid fine particles and the carrier gas to be atomized and activating the liquid fine particles

Wherein the complex disinfectant fluid to be finally sprayed comprises liquid disinfecting agent microparticles, ozone (vapor, liquid or a combination thereof), and carrier gas.

The above object is also achieved by a process for producing

Storage means (T1) of liquid disinfectant;

A carrier gas supply means (T2) for moving the disinfectant;

Means (T3) for generating ozone;

Means (T4) for mixing the generated ozone with the disinfectant;

Means (T5) for making the liquid sterilization agent into fine particles and spraying the same with the carrier gas;

And atmospheric pressure plasma generating means (T6) for generating the vapor ozone by passing the liquid fine particles and the carrier gas to be injected and activating the liquid fine particles,

Wherein the final disinfection fluid comprises a liquid disinfecting agent microparticle, ozone (gaseous, liquid or a combination thereof), and a carrier gas.

According to an aspect of the present invention,

The liquid disinfecting agent may be any one of hydrogen peroxide water, ozonated water, peracetic acid, hypochlorous acid, sodium percarbonate, glutaraldehyde, ethylenediamine-tetracetate, isopropyl alcohol, citric acid, lactic acid,

According to an aspect of the present invention,

The hydrogen peroxide concentration of the hydrogen peroxide solution may be 50% or less, 35% or less, 15% or less, 7.5% or less, 6% or less, or 3% or less.

According to an aspect of the present invention,

The carrier gas may be air, oxygen, argon, nitrogen, helium, or any combination thereof.

According to an aspect of the present invention,

The ozone may be mixed with a liquid disinfectant in the form of gaseous ozone, a method of mixing with a carrier gas, a method of mixing with a particulate generation site, a method of mixing with a spray, or a combination thereof.

According to an aspect of the present invention,

The mixing of the ozone may be carried out in the form of liquid ozonated water or ozone microbubbles in a liquid disinfectant.

According to an aspect of the present invention,

The concentration of ozone in the mixed disinfectant fluid to be finally sprayed may be 15% or less based on the gas excluding the liquid.

According to an aspect of the present invention,

The liquid fine particles may be generated by an injection nozzle or an ultrasonic particle generator.

According to an aspect of the present invention,

An ultraviolet (UV) irradiation device may further be provided to irradiate ultraviolet rays (UV) to any one of the liquid disinfectant, the liquid disinfectant fine particles injected, the sterilizing object, or a combination thereof.

According to an aspect of the present invention,

The atmospheric pressure plasma is generated by applying atmospheric pressure plasma to the plasma generating electrode to generate atmospheric plasma, and passing the carrier gas through the plasma generating region to the at least one plasma jet jetted from the generating portion to a free space Can be generated.

According to an aspect of the present invention,

The atmospheric pressure plasma may be generated by at least one dielectric barrier discharge (DBD) plasma electrode having a pair of plate-shaped electrodes and through-holes for fluid flow in a direction perpendicular to the plate.

According to an aspect of the present invention,

The dielectric barrier discharge plasma electrode may be any one of a through-type spacing DBD method, a through-type surface DBD method, a through-type side DBD method, or a combination thereof.

According to an aspect of the present invention,

The plasma electrode may be formed of any one of a water repellent layer, a waterproof layer, a photocatalyst layer, a catalyst layer, a hydrophilic layer, an insulating layer, a dielectric layer, a protective layer, or a combination thereof in any one of a metal electrode, a dielectric, .

According to an aspect of the present invention,

The plasma electrode may further include a temperature control function for controlling the temperature of the electrode.

According to an aspect of the present invention,

And a fluid induction pipe for guiding the inflow and outflow of fluid into the through-hole inlet, the outlet, or both may be introduced.

 According to an aspect of the present invention,

The applied electricity may be a voltage in the range of 0.2 to 25 kV and a frequency in the range of 0.5 to 50 kHz in the form of pulses or alternating currents.

According to an aspect of the present invention,

The atmospheric pressure plasma may be generated by an arc discharge or a plasma torch method.

SUMMARY OF THE INVENTION

Charging a liquid disinfectant into the container (S1);

Supplying a carrier gas for moving the sterilizing agent (S2);

Generating ozone (S3);

Mixing the ozone with the disinfectant (S4);

(S5) spraying the liquid disinfectant with the carrier gas in the form of fine particles;

A step S7 of flying the complex disinfectant fluid to reach the sterilizing object;

(S8) sterilizing the complex disinfection fluid by causing a complex reaction,

Characterized in that the final disinfected complex disinfectant fluid comprises liquid disinfectant microparticles, ozone (gaseous, liquid or a combination thereof) and a carrier gas.

The object of the present invention is furthermore to:

Charging a liquid disinfectant into the container (S1);

Supplying a carrier gas for moving the sterilizing agent (S2);

(S5) spraying the liquid disinfectant with the carrier gas in the form of fine particles;

(S6) a liquid disinfecting agent microparticle is activated by passing the liquid fine particles and the carrier gas through the atmospheric pressure plasma, and at the same time, a gaseous ozone is generated to form a complex disinfectant fluid;

A step S7 of flying the complex disinfectant fluid to reach the sterilizing object;

(S8) sterilizing the complex disinfection fluid by causing a complex reaction,

Wherein the final disinfection fluid comprises a liquid disinfecting agent microparticle, ozone (vapor, liquid or a combination thereof), and a carrier gas.

The object of the present invention is furthermore to:

Charging a liquid disinfectant into the container (S1);

Supplying a carrier gas for moving the sterilizing agent (S2);

Generating ozone (S3);

Mixing the ozone with the disinfectant (S4);

(S5) spraying the liquid disinfectant with the carrier gas in the form of fine particles;

(S6) a liquid disinfecting agent microparticle is activated by passing the liquid fine particles and the carrier gas through the atmospheric pressure plasma, and at the same time, a gaseous ozone is generated to form a complex disinfectant fluid;

A step S7 of flying the complex disinfectant fluid to reach the sterilizing object;

(S8) sterilizing the complex disinfection fluid by causing a complex reaction,

Wherein the final disinfection fluid comprises a liquid disinfecting agent microparticle, ozone (vapor, liquid or a combination thereof), and a carrier gas.

According to an aspect of the present invention,

The liquid disinfecting agent may be any one of hydrogen peroxide water, ozonated water, peracetic acid, hypochlorous acid, sodium percarbonate, glutaraldehyde, ethylenediamine-tetracetate, isopropyl alcohol, citric acid, lactic acid,

According to an aspect of the present invention,

The hydrogen peroxide concentration of the hydrogen peroxide solution may be 50% or less, 35% or less, 15% or less, 7.5% or less, 6% or less, or 3% or less.

According to an aspect of the present invention,

The carrier gas may be air, oxygen, argon, nitrogen, helium, or any combination thereof.

According to an aspect of the present invention,

The ozone may be mixed with a liquid disinfectant in the form of gaseous ozone, a method of mixing with a carrier gas, a method of mixing with a particulate generation site, a method of mixing with a spray, or a combination thereof.

According to an aspect of the present invention,

The mixing of the ozone may be carried out in the form of liquid ozonated water or ozone microbubbles in a liquid disinfectant.

According to an aspect of the present invention,

The concentration of ozone in the mixed disinfectant fluid to be finally sprayed may be 15% or less based on the gas excluding the liquid.

According to an aspect of the present invention,

The liquid fine particles may be generated by an injection nozzle or an ultrasonic particle generator.

According to an aspect of the present invention,

The ultraviolet (UV) irradiation device may further be provided to irradiate ultraviolet (UV) light to any one of the liquid disinfectant, the liquid disinfectant fine particles injected, the sterilizing object, or a combination thereof.

According to an aspect of the present invention,

The atmospheric pressure plasma is generated by applying atmospheric pressure plasma to the plasma generating electrode to generate atmospheric plasma, and passing the carrier gas through the plasma generating region to the at least one plasma jet jetted from the generation site to a free space Can be generated.

According to an aspect of the present invention,

The atmospheric-pressure plasma may be generated by at least one dielectric barrier discharge (DBD) plasma electrode having a pair of plate-shaped electrodes with through-holes for fluid flow in a direction perpendicular to the plate.

According to an aspect of the present invention,

The dielectric barrier discharge plasma electrode may be any one of a through-type spacing DBD method, a through-type surface DBD method, a through-type side DBD method, or a combination thereof.

According to an aspect of the present invention,

The plasma electrode may be formed of any one of a water repellent layer, a waterproof layer, a photocatalyst layer, a catalyst layer, a hydrophilic layer, an insulating layer, a dielectric layer, a protective layer, or a combination thereof in any one of a metal electrode, a dielectric, .

According to an aspect of the present invention,

The plasma electrode may further include a temperature control function for controlling the temperature of the electrode.

According to an aspect of the present invention,

It is possible to introduce a fluid induction pipe for guiding the inflow and outflow of the fluid to the through-hole inlet, the outlet, or both.

According to an aspect of the present invention,

The applied electricity may be a voltage in the range of 0.2 to 25 kV and a frequency in the range of 0.5 to 50 kHz in the form of pulse or alternating current.

According to an aspect of the present invention,

The atmospheric plasma may be generated by an arc discharge or a plasma torch method.

The above-described sterilization apparatus and method are simple devices and excellent in sterilization efficiency as a result of combined reaction of disinfectant, ozone, and plasma. In particular, the device can be simplified by omitting the decompression system in sterilization, and the efficiency of sterilization can be increased through the generation of active species on the surface of the sterilized object, rather than after migration of the active species.

Therefore, the sterilization apparatus and method of the present invention can be easily applied to the sterilized object exposed to indoor and outdoor, and further applicable to the inside of the closed container, so that it can be easily applied to the sterilization of medical instruments and the like.

1 is a conceptual diagram showing a sterilization process of a disinfectant (hydrogen peroxide) and ozone according to the present invention.
2 is a conceptual diagram illustrating an activation process by plasma according to the present invention.
FIG. 3 is a conceptual diagram showing an activation method according to the present invention (particularly, (a) shows an existing method, and (b) shows a method according to the present invention)
Fig. 4 shows a structural view of a device for sterilizing a sterilizing agent and vapor ozone.
FIG. 5 shows a structure of a device for sterilizing a sterilized medicine and microbubble ozone.
Fig. 6 shows the structure of the sterilizing agent and plasma (plasma jet system) combined sterilization system.
7 is an embodiment of the plasma jet structure.
8 shows various types of DBD plasma electrode structures according to the present invention ((a) through-type spacing DBD (b) through-type surface DBD (c) through-side DBD method).
Fig. 9 shows the structure of a sterilization system of a disinfectant drug and a plasma (through-side DBD system).
10 is an embodiment of the structure of the penetrating side DBD plasma electrode.
Fig. 11 shows a structure of a device of a sterilization type of disinfectant, ozone, and plasma (penetration type surface DBD type).
12 is a flow chart showing the steps of the sterilization method.

The present invention aims to efficiently utilize a complex reaction with a disinfectant (hydrogen peroxide, etc.), ozone and water. The main purpose of plasma use is ozone generation and liquid activation of liquid fine particles. Liquid disinfection chemicals, ozone, and activated liquids that constitute a complex disinfection fluid have a relatively long lifetime, so they reach the object to be sterilized without consuming the ingredients even after the spraying process, and cause a complex reaction to form radicals and the like.

The present invention is based on spraying a disinfectant such as hydrogen peroxide water into liquid fine particles, and adopts two methods as an additional efficiency increase method. First, the ozone is merged before spraying the disinfectant to spray the disinfectant and ozone at the same time. Second, the liquid fine particles and the carrier gas, which are sprayed when spraying the disinfectant, pass through the plasma to convert oxygen in the carrier gas to ozone, and the liquid fine particles are activated by liquid. Of course, two methods can be applied at the same time.

First, the ozone confluence method before spraying will be described.

Hydrogen peroxide, peracetic acid, hypochlorous acid and the like are used as disinfection chemicals, which is a known technology. However, the method of spraying the disinfectant also takes a lot of time for sterilization. Especially, in the case of hydrogen peroxide, the sterilization effect of Gram-negative bacteria having a protective enzyme such as superoxide dismutase is small

In the case of ozone, the ozone-only sterilization method or the ozone-and-steam sterilization method is also a known technique. Ozone is involved only in the decomposition process of limited organic bonds, or is consumed in the oxidation reaction of metals, which is disadvantageous in that it takes much time between sterilization treatments. Therefore, the present invention improves the efficiency by inducing the combined reaction of disinfectant such as hydrogen peroxide and ozone and water.

The peroxone process

Hydrogen peroxide and ozone cause a peroxone reaction. The peroxone reaction is represented by the following formula, which produces OH radicals and the like.

H ₂ O ₂ + 2O ₃ -> 2OH ^* + 3O ₂

In the case of OH radicals, fluoride (F, 2.87 eV) is followed by a strong oxidizing action (2.85 eV), which reacts with almost all organic materials at a high rate and is effective for sterilization. However, since the survival life is short, the residence time is very short. Hydrogen peroxide has a stable lifetime unless triggered specifically by the reaction. In the present invention, in the case of ozone, it may be gaseous ozone or liquid ozone. The half-life of ozone differs depending on the temperature, but it is about 12 hours. It is about 20-30 minutes in water and the post-production residual time is sufficient for practical application.

This reaction may also be initiated by ignoring the ignition, but hydrogen peroxide and ozone have a relatively long lifetime, hydrogen peroxide is liquid, and a sufficient amount of ozone is supplied, so that the reaction is easily carried out in the sterilizing object until it reaches the sterilizing object, .

(Hydrolysis reaction of ozone)

Since the present invention uses hydrogen peroxide water or the like, the disinfecting agent already contains water. When ozone coexists with water, the hydrolysis reaction of ozone occurs through several reaction pathways as follows. To the HO ₂ radical initiator generates OH radicals and hydrogen peroxide and the like.

O ₃ + H ₂ O -> HO ₃ + OH ^-

HO ₃ + OH ^- - > 2HO ₂ ^*

O ₃ + HO ₂ ^* -> OH ^* + 2O ₂

O ₃ + OH ^* - > HO ₂ ^* + O ₂

HO ₂ ^* + HO ₂ ^* - > H ₂ O ₂ + O ₂

OH ^* + HO ₂ ^* - > H ₂ O + O ₂

OH ^* + OH ^* - > H ₂ O ₂

In the present invention, ozone is gaseous or liquid, and since water is also present in a liquid state, since the object is vaporized and continuously supplied to the object, the sterilization reaction continues even after the spraying time.

In the present invention, for sterilization, liquid fine particles of a disinfectant (such as hydrogen peroxide water) are used as a main component of a disinfecting fluid, a complex disinfectant fluid is formed using ozone (vapor or liquid) or plasma as needed, Reaction to increase sterilization efficiency. A conceptual diagram of this process is shown in FIG.

As shown in Fig. 1, the ozone may be a gas by an ozone generator, or may be ozone water dissolved in water. The mixed liquid and vapor disinfection fluid to be sprayed flows through the outside space of the atmospheric pressure state in which ozone (gas or liquid fine particles), hydrogen peroxide (liquid fine particles), water (liquid fine particles), air and carrier gas coexist. During the flight of the complex disinfection fluid, some of the reaction of ozone, hydrogen peroxide, ozone and water vapor described above occurs, but most of the disinfectant fluid reaches the surface of the sterilizing object. Therefore, a complex reaction of hydrogen peroxide, ozone, and water occurs on the surface of the sterilized object to actively generate OH radicals, resulting in a sterilization reaction.

Also, when hydrogen peroxide is used as a disinfectant in the present invention, hydrogen peroxide and ozone are converted into water and oxygen after the sterilization is finished, so that the disinfectant is not left.

In the meantime, hydrogen peroxide is exemplified as a disinfectant for convenience, but hydrogen peroxide, ozonated water, peracetic acid, hypochlorous acid, sodium peroxocarbonate, glutaraldehyde, ethylenediaminetetraacetate, isopropyl alcohol Citric acid, lactic acid, oxalic acid, or a combination thereof may be used.

When the hydrogen peroxide solution is used as a disinfectant, the concentration of the hydrogen peroxide solution is preferably divided into 50%, 35%, 15%, 7.5%, 6%, or 3% Do.

It is preferable to use air, oxygen, argon, nitrogen, helium, or a combination thereof as the carrier gas used for spraying, the carrier gas used for generating ozone, and the carrier gas used for generating plasma.

The means for spraying the liquid disinfectant with the carrier gas may be a spray nozzle, an ultrasonic fine particle generator, or the like. The size of the sprayed fine particles is preferably 1 to 50 microns.

In order to utilize the ozone in the gaseous phase, an ozone generator using air or oxygen as a raw material can be used, and an ozonated water generator can be used to use ozone in the liquid phase.

A method of mixing gaseous ozone is a method of mixing with a carrier gas for spraying. A more efficient method is to add gaseous ozone to the liquid disinfection agent as a bubble to dissolve some of the disinfectant and spray the rest with the carrier gas. Micro bubbles can be used because it is more efficient in dissolving ozone when using fine bubbles. In the case of liquid ozone, it can be sprayed together with liquid disinfectant.

Another method of the present invention is a method using plasma, and a process of spraying a disinfectant at an appropriate concentration under atmospheric pressure is used as a basic process as described above. The difference, however, is that the ozone mixing through the ozone generator is omitted and the sprayed disinfectant fluid passes through the plasma. As a result, the carrier gas (including oxygen) present in the disinfection fluid is converted to the vapor ozone by the plasma, and the liquid is activated by the plasma for the liquid disinfecting drug microparticles. Liquid ozone, OH radicals and the like are formed in the liquid due to the activation of the liquid.

Table 1 shows the types and characteristics of the plasma apparatus used in the field of sterilization and the amounts of ozone and active oxygen generated in the presence of oxygen. According to Table 1, it can be seen that active oxygen is mainly formed when a space discharge is generated under a reduced pressure (low pressure discharge). Also, it is known that a conventional arc discharge or plasma torch is a high-temperature plasma generating a high temperature by applying a high voltage, and a large amount of active oxygen is mainly generated.

It can be seen that a large amount of ozone is generated mainly in the case of the dielectric barrier discharge, and that the plasma jet (jet) produces a balanced generation of ozone and active oxygen.

Efforts to introduce sterilization chemicals or ozone and to increase the efficiency of sterilization using low-pressure discharge can be found in various publications. However, there are side effects such as complicated decompression device of the sealed container and direct contact of the sterilizing object with the plasma.

US Pat. No. 6,054,892 B2 discloses a method for exposing a mist to arc discharge after spraying a sterilizing agent mist to improve sterilization efficiency. However, due to the use of liquid mist, the plasma method other than arc discharge can not be applied due to the electric disturbance characteristic of the liquid. In addition, due to the nature of arc discharge, active oxygen and radicals are mainly formed, and active oxygen and radicals have a short life-span.

On the other hand, in the case of Dielectric Barrier Discharge (DBD) plasma, a large amount of ozone is generated and is mainly used for generating ozone. In the field of sterilization, it is used for the decomposition and activation of hydrogen peroxide when supplying hydrogen peroxide for the generation of ozone, for the activation of the circulating gas in the closed vessel or for the decomposition for preventing hydrogen peroxide and radical components from being polluted. However, it is disadvantageous that it is difficult to apply because the liquid disturbance occurs when the liquid fine particles pass through the DBD plasma in addition to the gas.

In the case of plasma jet, active research is being carried out, and it is advantageous that plasma can be moved from a generation site to a remote place.

In the field of sterilization, the application of plasma has focused on the generation of large amounts of active oxygen and OH radicals and sterilization. That is, it can be said that the active species is formed and then the active species is moved. However, the short life span of the active species has a disadvantage in the long-distance movement and there is a disadvantage that the active species must be continuously supplied.

According to Table 1, DBD discharge plasma or plasma jet is suitable for using ozone by plasma. Therefore, DBD plasma and plasma jet are mainly used in the present invention. However, if an ozone generator is provided and ozone is sufficient, an arc discharge or a plasma torch which generates a large amount of active species may be used.

Since the plasma jet generates ozone and active oxygen to the same extent and can generate the plasma remotely, the electric discharge disturbance does not occur when the liquid fine particles pass through the plasma, so that the present invention can be applied to the present invention.

On the other hand, in the case of DBD plasma, additional improvement measures must be devised for passing the spray fluid containing liquid fine particles. In the present invention, a through-hole is formed in a direction perpendicular to the two electrodes parallel to each other based on an atmospheric-pressure DBD low-temperature plasma electrode so as to smooth the flow of the fluid. In order to prevent electric disturbance due to the condensation of liquid fine particles, a liquid anti-condensation coating (water repellent coating) is applied to the surface of the electrode exposed to the outside, and a temperature control device is additionally provided on the plasma electrode to prevent the liquid surface condensation Respectively. This makes it possible to maintain a stable plasma even when the liquid fine particles pass through the plasma.

When the plasma jet and the DBD plasma are applied, a large amount of gaseous ozone is generated as shown in Table 1. At the same time, when the liquid fine particles pass through the plasma, the liquid is activated and ozone and OH radical are formed in the liquid. Some of the generated gaseous ozone also dissolves into the liquid. The phenomenon that occurs when oxygen and liquid fine particles pass through the plasma is shown in FIG. 2 as a conceptual diagram. The difference from Fig. 1 shows that ozone and radicals are formed even in liquid fine particles by the action of plasma.

      When the hydrogen peroxide in the gas phase is exposed to the plasma, it decomposes into water, oxygen and hydrogen and is destroyed. Therefore, the sterilization method of supplying the hydrogen peroxide vapor through the plasma is questionable. In the case of the present invention, since the disinfectant such as hydrogen peroxide is used in the form of liquid fine particles, the decomposition of hydrogen peroxide can be prevented and the liquid disinfectant can easily reach the target.

     In the present invention, the liquid disinfecting agent microparticles and the carrier gas are passed through a plasma to generate gaseous ozone, and the liquid fine particles are activated to form a complex disinfectant fluid. This complex disinfection fluid has a relatively stable disinfectant, ozone, and radicals. After reaching the object to be sterilized, the object is sterilized by the complex reaction.

In the present invention, it is preferable that the concentration of ozone in the complex disinfecting fluid of the liquid fine particles and ozone finally sprayed is not more than 15% based on the gas excluding the liquid. In addition, the complex disinfection fluid may be sterilized by spraying the sterilization object toward the sterilization target in the indoor or outdoor environment, or may be further provided with a closed space for isolating the sterilization target from the outside, and the sterilization object may be sterilized by spraying the sterilization fluid into the closed space.

Finally, the present invention will be compared with the prior art similar to the present invention in order to differentiate the present invention.

First, Korean Patent Laid-Open No. 10-2012-0028413 discloses a method for increasing sterilization efficiency by using hydrogen peroxide, ozone, and plasma. In this patent, hydrogen peroxide (20-60%) is made into a gas and the gas is passed through a plasma to enter the container. At the same time, ozone is generated in a separate ozone generator, and the ozone is heated and activated to enter the vessel. In such devices, the plasma consumes, decomposes, and activates gaseous hydrogen peroxide as a raw material. Ozone is also consumed by heating to decompose and activate. Therefore, high concentration of hydrogen peroxide and a large amount of ozone are required.

The present invention does not require a closed decompression state, uses liquid fine particles as a disinfectant drug, and has two functions of generating ozone and activating liquid at the same time. Since it is a liquid fine particle, It does not decompose hydrogen peroxide. Liquid Disinfection Drug It is a major difference from this patent that microparticles and ozone are injected straight to the surface of the object to be sterilized, and react with hydrogen peroxide and ozone and react with ozone and water after reaching the object surface.

On the other hand, Korean Patent No. 10-1250748 discloses a prior art for improving sterilization efficiency by using liquid disinfecting fine particles and ozone generated by plasma. In this patent, liquid hydrogen peroxide (5%) is injected into the fine particles and the mesh DBD plasma device is exposed to a part of the side of the vessel to generate ozone and OH radicals. This is similar to the present invention in that liquid fine particles of ozone and hydrogen peroxide are utilized. However, in this document, the plasma activates part of the gas circulating in the vessel passively and continuously, but converts a portion of the oxygen in the internal gas into ozone, so that the amount of ozone generated is small and the sterilizing action is not sufficient because the plasma decomposes hydrogen peroxide After activation, the sterilization action depends on the diffusion and migration of this active species.

The present invention is based on the fact that ozone optimized for sterilization can be introduced by converting inflow air or oxygen into ozone actively and discharging it, that plasma does not decompose and activate hydrogen peroxide, that liquid sterilization drug microparticles and ozone It differs from this patent in that OH radicals are generated by reaction of hydrogen peroxide with ozone and reaction with ozone and water after reaching the surface of the object by direct injection.

On the other hand, there is a prior art in which liquid hydrogen peroxide fine particles to be injected are activated by plasma. In the case of US 7008592 B2, it was intended to increase sterilization efficiency by activating sprayed liquid disinfectant microparticles with electric energy or light energy. However, the activation method calls for AC, AC arc, DC, pulse DC, DC arc, electron beam, ion beam, microwave beam, RF beam and ultraviolet beam but the specific method is a method of high voltage AC arc or DC arc . This patent does not deal with plasma, because it causes electrical disturbances when fine particles of liquid pass through the plasma region.

Therefore, until now, the method of activating the liquid fine particles of the disinfectant by radicals or the like has been practiced by generating a high-voltage electric arc between the two sharp electrodes so that the liquid fine particles passing through the area are passed through this area.

However, as shown in Table 1, in the case of arc discharge, since ozone is not generated but only active oxygen is generated, it is difficult to utilize the function of ozone and the life span of generated active species is short. The method using ultraviolet rays may also be considered, but it is judged that ultraviolet energy is insufficient to activate the sprayed fine particles in a short time.

The present invention utilizes a dielectric barrier (DBD) plasma and prevents the electrical disturbance of the through holes and the liquid fine particles to apply plasma to pass the liquid fine particles. Ozone is mostly generated after passing through the plasma, When plasma jets capable of utilizing ozone and remotely generated from plasma electrodes are used, it is possible to prevent the electrical indirect failure of liquid fine particles and to maintain the balance of the complex disinfectant fluid by the simultaneous generation of ozone and reactive oxygen species Is the difference of the present invention.

Summarizing the features of the present invention, the present invention allows chemically stable, long half-life ozone to reach the sterilizing object while at the same time reaching the liquid disinfecting agent microparticles. Thereafter, active radical forming reaction is induced on the surface of the sterilized object, thereby maximizing sterilization efficiency. A conceptual diagram thereof is shown in Fig. That is, the present invention belongs to the method of FIG. 3 (b) in which active species are generated in the sterilizing object after the disinfection component is transferred to the object, rather than the system of FIG. 3 (a) .

When the liquid fine particles are passed through the plasma, the plasma is electrically stabilized by introducing a remote plasma or preventing electric disturbance of the plasma electrode. When the complex disinfection fluid passes through the plasma, a large amount of gaseous ozone is generated, and a part of generated ozone is dissolved in the liquid fine particles. In addition, liquid activation of the liquid fine particles occurs due to the plasma action, and ozone in the liquid phase is generated in the fine particles, thereby further increasing the sterilization efficiency.

Since the present invention uses a liquid disinfectant spray device and ozone or plasma, it can be judged that the present invention is not different from the conventional technology. However, the present invention has a fundamental understanding of the sterilization process, . That is, the principle differentiation in the present invention is not a movement method after the generation of active species such as OH radicals but a system in which OH radicals are generated by inducing activation by a complex reaction after the disinfectant and ozone reach the object to be sterilized, In other words, it is an active species generation method after movement. The technical difference is that plasma is applied to the liquid fine particles and the plasma of the liquid fine particles is applied directly. For this purpose, electric disturbance prevention technique and through hole are applied.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

(Device configuration example 1)

Fig. 4 shows a device configuration example 1 according to the present invention. First, a sterilization agent storage container T1 and a carrier gas supply device T2 are provided. And an ozone generator T3 for generating ozone by using air or oxygen. And a microparticle generating and spraying device for supplying liquid disinfecting medicine (such as hydrogen peroxide water) from the disinfectant storage container T1 and spraying the liquid disinfecting medicine together with the carrier gas (air etc.). The apparatus may be a spray nozzle or a particle generator T5 using ultrasonic waves.

The ozone generated by the ozone generator is supplied to the liquid sterilization agent in the form of bubbles (R1), by mixing with the carrier gas (R2), by mixing with the particulate generator (R3), then to the particulate generator (R4) The user can select and use the method according to need.

In the particulate generating and spraying apparatus (T5), ozone mixed with the liquid disinfecting agent fine particles and the carrier gas are sprayed at the same time. In this case, the size of the liquid fine particles is preferably in the range of 1 micron to 50 microns, and the spraying speed and amount of the fine particles can be adjusted depending on the application.

Also, ozonated water can be generated by replacing the ozone generator with the ozonated water generator in the apparatus according to the present invention. At this time, the ozone water is preferably mixed with the disinfectant (R1), and the mixed ozone water and the disinfectant are simultaneously converted into fine particles and sprayed to the outside.

(Device configuration example 2)

Device Configuration Example 2 relates to another way to mix ozone with disinfecting chemicals. This example describes how to mix ozone with microbubbles. When ozone is mixed in the form of micro bubbles, ozone is dissolved in the disinfecting agent in a large amount, and ozone remaining in the gas is atomized together with the carrier gas. Therefore, the effect of spraying liquid ozone and vapor ozone at the same time appears. That is, the two effects of the vapor ozone mixing method and the ozone water mixing method described in the apparatus configuration example 1 are simultaneously exhibited. In order to use this method, a micro bubble generating function is given to the ozone mixer T4 and the R1 direction (see Fig. 4) is applied. In the case of the micro bubble, since the liquid is first sucked, the ozone mixer (micro bubble generator) supplies the micro bubble in the R1 direction (see FIG. 4) after sucking the liquid from the disinfectant storage container T1. Of course, the ozone mixer having the micro bubble function may be supplied with the liquid other than the disinfectant storage container T1, or may be supplied with the liquid having a different kind. One embodiment of the microbubble mixing method of ozone is shown in Fig.

(Device configuration example 3)

A device configuration example 3 is shown in Fig. The configuration of the apparatus is the same as that of the apparatus configuration example 1 except that the ozone generator and the ozone mixer are omitted.

However, at least one plasma jet device connected to the plasma power source is additionally provided. Figure 7 shows one embodiment of a plasma jet structure. The plasma jet is a plasma generating device in which a plasma is generated by lowering electricity to a plasma generating electrode and a carrier gas is passed through a plasma generating region to discharge a plasma from a generation site to a free space (external space).

The plasma jet is placed in front of the disinfecting fluid to be sprayed so that the disinfecting fluid to be sprayed passes through the plasma discharged from the plasma jet. However, it is preferable that the plasma jet is arranged so as not to interfere with the flow of the liquid fine particles to be sprayed because the air flow is fast. For example, when two plasma jets are provided and the plasma is ejected in the opposite direction, interference with the flow of the particulate matter can be reduced, and when three or more plasma jets are mounted, the respective plasma streams can be arranged to be centered. The structure and generation principle of the plasma jet can be found in many documents. In the present invention, the power source for driving the plasma jet is preferably a voltage in the range of 0.2 to 25 kV and a frequency in the range of 0.5 to 50 kHz in the form of pulse or alternating current.

In the present invention, the function of the plasma jet is to generate a large amount of gaseous ozone and active oxygen when the complex disinfectant fluid passes through the plasma, and to activate the liquid fine particles by liquid activation.

(Device configuration example 4.)

Configuration Example 4 has another plasma generation device in place of the plasma jet device in Configuration Example 3 above. At this time, the plasma generator applies a DBD plasma electrode having a through hole for fluid flow in a direction perpendicular to the plate on a pair of plate-shaped electrodes.

Three types of DBD plasma electrodes can be used. These three types are shown in Fig. 8 (a) is a through-type space (space) DBD, (b) is a through type DBD, and (c) is a through DBD type. The spacing DBD electrode is a dielectric layer between a pair of plate-shaped electrodes and has a gap between two electrodes. The surface DBD electrode has a dielectric layer between a pair of electrodes, and one electrode has a linear pattern And there is a surface discharge along the pattern. In addition, the side DBD electrode has a dielectric layer between a pair of electrodes, and there is no gap between the electrodes, so that plasma is generated on the side of the electrode.

In order to use the basic structure of the DBD electrode and to smooth the flow of the fluid, a through hole is formed in a direction perpendicular to the plate electrode so that the liquid fine particles and the gas pass through. FIG. 9 shows an embodiment of apparatus configuration example 4 using through-side DBD plasma. FIG. 10 shows an embodiment of the through-type side DBD plasma electrode structure. Apparatus configuration example 4 is similar to apparatus configuration example 3 in that ozone is generated and liquid fine particles passing through plasma are activated.

The DBD plasma electrode can be applied to one or more of the same types or to other types. Each type can also be expanded in series or in parallel.

The power source for driving the plasma is preferably in the range of 0.2 to 25 kV and the frequency in the range of 5 to 50 kHz in the form of pulse or alternating current. In addition, a water repellent layer, a waterproof layer, a photocatalytic layer, a catalyst layer, a hydrophilic layer, an insulating layer, a dielectric layer, and a protective layer are formed on the metal electrode, the dielectric, and exposed parts of the plasma generating electrode structure to prevent electrical disturbance by liquid fine particles, Can be further increased.

 In addition, when a device for controlling the temperature is attached to prevent the electric disturbance of the liquid fine particles, the plasma can be maintained more stably.

 In the meantime, since the DBD plasma electrode according to the present invention has a through hole in the flow direction of the complex disinfecting fluid, when the fluid induction pipe for guiding the inflow and outflow of the fluid is inserted into the inlet, outlet, The flow can be made more smooth.

(Device configuration example 5.)

By combining at least one configuration example selected from the device configuration examples 1 to 4, the advantages and disadvantages of the respective configuration examples can be realized in combination, and the optimum sterilizing performance can be ensured with an optimum combination. Fig. 11 shows a configuration example in which device configuration example 2 and device configuration example 4 are combined. Further, in the case of combining with the device configuration example 1 or the device configuration example 2, since the supply of ozone is already secured, the atmospheric pressure plasma generating device may be applied with an arc method or a plasma torch method which is advantageous in the active vertical plane.

(Device configuration example 6)

In any one of the constitution examples 1 to 5, an apparatus for supplying ultraviolet light to any one of the disinfectant storage container, the disinfecting fluid to be sprayed, the surface of the sterilizing object, and a combination thereof may be provided to further increase the sterilization efficiency .

Hereinafter, a stepwise sterilization method for performing sterilization is described. This process is shown in Fig.

(Sterilization method)

In the present invention, the sterilization method is carried out as follows.

Charging a liquid disinfectant into the container (S1);

Supplying a carrier gas for moving the sterilizing agent (S2);

Generating ozone (S3);

Mixing the ozone with a disinfectant (S4);

(S5) spraying the liquid disinfectant with the carrier gas in the form of fine particles;

(S6) a liquid disinfecting agent microparticle is activated by passing the liquid fine particles and the carrier gas through the atmospheric pressure plasma, and ozone and active species are simultaneously generated to form a complex disinfectant fluid;

A step S7 of flying the complex disinfectant fluid to reach the sterilizing object;

(S8) of sterilizing the complex disinfection fluid by causing a complex reaction.

      At this time, depending on the configuration of the apparatus, one of steps S3 / S4 and step S6 may be omitted.

Hereinafter, the present invention will be described in detail by way of examples.

(Example)

The sterilization apparatus was constructed in accordance with the apparatus configuration example 1 and the apparatus configuration examples 3 to 5, and the process parameters used in each apparatus configuration example are as follows.

A 10% hydrogen peroxide solution was used as a disinfectant, and the size of the sprayed liquid fine particles was in the range of 10 to 30 μm and the spray amount was 500 cm ³ / hr. Ozone was produced in an ozone generator at 10 g / hr and mixed with the carrier gas before spraying of the liquid fine particles.

The plasma jet was applied with AC power of 10 kV, 30 kHz, and the pressure of the carrier gas was adjusted so that the plasma expanded to 1.5 cm from the plasma discharge port. In order to maintain the symmetry, two jet generators were installed so that the jet direction of the jet was displaced by 45 degrees.

The DBD plasma generator uses a through-gap type DBD type electrode, which is a type of application of DBD in which a through hole is formed in a disk electrode and a plasma is generated at a constant interval from the electrode. At this time, the diameter of the electrode was 3 mm, and the through holes were uniformly distributed. The distance between the electrodes was 1 mm.

A frequency of 15 kHz and a voltage of 4 kV were applied to the power source, and the mounting position was positioned 3 cm before the liquid-phase particulate spray outlet, and the liquid-phase particulates were passed through. In particular, water repellent coating was applied to minimize the electrical interference effect of the liquid fine particles, and the temperature of the electrode was maintained at 150 ° C by using a temperature controller to maintain the plasma stably.

The microorganism samples used in the sterilization test were BI (Biological Indicator). BI was commercially available, and 10 ⁶ inoculated strains of Geobacillus Stearothermophillus were placed on stainless steel at a distance of 30 cm from the spray outlet of the disinfectant. Thereafter, the sterilization apparatus was operated and a sterilization test was carried out by spraying every 2 seconds for 30 seconds. Table 2 shows the spraying time when the BI was incubated at the elapsed time of 1 hour after spraying and no reaction was observed.

As shown in Table 2, Example 1 is a case in which hydrogen peroxide and ozone are applied in the case of Apparatus Example 1, and Examples 2 and 3 are cases of Apparatus Examples 3 and 4, respectively. Examples 2 and 3 are cases in which hydrogen peroxide and plasma are applied, and application methods of plasma are different from each other. Example 4 is a case in which hydrogen peroxide, ozone, and plasma are simultaneously applied as the case of the device configuration example 5.

(Comparative Example)

On the other hand, as shown in Table 2 for comparison with the present invention, the sterilization tests of Comparative Examples 5 to 7 were carried out. Comparative Example 5 is a case where only hydrogen peroxide is sprayed, and Comparative Example 6 is a case where only vapor ozone is sprayed through an ozone generator. Comparative Example 7 is a case where plasma is applied after only vapor ozone is sprayed.

(Test result)

According to Table 2, Example 4 showed the most excellent efficiency, and Comparative Examples 6 and 7 did not sterilize even at a spraying time of 30 seconds.

As described above, the present invention is not limited to the above-described specific preferred embodiments, and any person skilled in the art can make various modifications without departing from the gist of the invention claimed in the claims. And such changes are within the scope of the claims.

T1 ...... Liquid disinfectant storage means T2 ...... Carrier gas supply means
T3 ...... Ozone generating means T4 ...... Ozone mixing means
T5 ...... Fine particle generation and spraying means T6 ...... Plasma generating means
R1 ...... Ozone mixing in liquid disinfectant R2 ... Ozone mixing in carrier gas
R3 ...... Ozone mixing in the particle generator R4 ...... Ozone mixing
S1 ...... Disinfecting drug loading step S2 ...... Carrier gas supplying step
S3 ...... Ozone generating step S4 ...... Ozone mixing step
S5 ...... atomization and spraying step S6 ...... plasma passing step
S7 ...... Flight and arrival step S8 ...... Combined reaction and sterilization step
110 ...... lower electrode 120 ...... upper electrode
130 ...... dielectric layer 140 ...... atmospheric plasma
150 ...... through hole

Claims (38)

Storage means (T1) of liquid disinfectant;
A carrier gas supply means (T2) for moving the disinfectant;
Means (T3) for generating ozone;
Means (T4) for mixing the generated ozone with the disinfectant;
And means (T5) for making said liquid sterilization agent into liquid fine particles and spraying said liquid sterilization agent with said carrier gas,
Characterized in that the final disinfected complex disinfection fluid comprises liquid disinfectant microparticles, ozone (vapor, liquid or a combination thereof), and carrier gas.
Storage means (T1) of liquid disinfectant;
A carrier gas supply means (T2) for moving the disinfectant;
Means (T5) for making said liquid sterilization agent into liquid fine particles and spraying said liquid sterilization agent together with said carrier gas;
And atmospheric pressure plasma generating means (T6) for generating the vapor ozone by passing the liquid fine particles and the carrier gas to be atomized and activating the liquid fine particles
Characterized in that the final disinfected complex disinfection fluid comprises liquid disinfectant microparticles, ozone (vapor, liquid or a combination thereof), and carrier gas.
Storage means (T1) of liquid disinfectant;
A carrier gas supply means (T2) for moving the disinfectant;
Means (T3) for generating ozone;
Means (T4) for mixing the generated ozone with the disinfectant;
Means (T5) for making the liquid sterilization agent into fine particles and spraying the same with the carrier gas;
And atmospheric pressure plasma generating means (T6) for generating the vapor ozone by passing the liquid fine particles and the carrier gas to be injected and activating the liquid fine particles,
Characterized in that the final disinfected complex disinfection fluid comprises liquid disinfectant microparticles, ozone (vapor, liquid or a combination thereof), and carrier gas.
The method of any one of claims 1, 2, and 3,
Wherein the liquid disinfectant is one of hydrogen peroxide water, ozonated water, peracetic acid, hypochlorous acid, sodium percarbonate, glutaraldehyde, ethylenediamine-tetracetate, isopropyl alcohol, citric acid, lactic acid, A sterilization unit for sterilizing fluid.
5. The method of claim 4,
Wherein the hydrogen peroxide solution has a hydrogen peroxide concentration of 50% or less, 35% or less, 15% or less, 7.5% or less, 6% or less, or 3% or less.
The method of any one of claims 1, 2, and 3,
Wherein the carrier gas is any one of air, oxygen, argon, nitrogen, helium, or a combination thereof.
4. The method according to any one of claims 1 to 3,
The ozone may be mixed with a liquid disinfectant in the form of gaseous ozone, a method of mixing with a carrier gas, a method of mixing with a particulate generation site, a method of mixing with a spray, or a combination thereof Compound disinfection fluid spray sterilization device.
4. The method according to any one of claims 1 to 3,
Wherein the mixing of the ozone is carried out in the form of liquid ozone water or ozone microbubbles in a liquid disinfecting agent.
The method of any one of claims 1, 2, and 3,
Wherein the concentration of ozone in the final disinfected mixed disinfection fluid has an ozone concentration of 15% or less based on the gas excluding the liquid.
The method of any one of claims 1, 2, and 3,
Wherein the liquid fine particles are generated by an injection nozzle or an ultrasonic fine particle generator.
The method of any one of claims 1, 2, and 3,
Characterized in that an ultraviolet (UV) irradiating device is further provided to emit ultraviolet rays (UV) to any one of the liquid disinfecting agent, the liquid disinfecting agent fine particles injected, the sterilizing object, or a combination thereof.
4. The method according to any one of claims 2 to 3,
The atmospheric pressure plasma is generated by applying atmospheric pressure plasma to the plasma generating electrode to generate atmospheric plasma, and passing the carrier gas through the plasma generating region to the at least one plasma jet jetted from the generation site to a free space Wherein the sterilization device is a sterilization device.
4. The method according to any one of claims 2 to 3,
Wherein the atmospheric-pressure plasma is generated by at least one dielectric barrier discharge (DBD) plasma electrode having a pair of plate-shaped electrodes with through-holes for fluid flow in a direction perpendicular to the plate. .
14. The method of claim 13,
Wherein the dielectric barrier discharge plasma electrode is any one of a through-type spacing DBD system, a through-type surface DBD system, a through-type side DBD system, or a combination thereof.
14. The method of claim 13,
The plasma electrode may be formed of any one of a water repellent layer, a waterproof layer, a photocatalyst layer, a catalyst layer, a hydrophilic layer, an insulating layer, a dielectric layer, a protective layer, or a combination thereof in any one of a metal electrode, a dielectric, Wherein the sterilizing device is configured to sterilize the sterilized fluid.
14. The method of claim 13,
Wherein the plasma electrode further comprises a temperature control function for controlling the temperature of the electrode.
14. The method of claim 13,
Wherein a fluid induction tube for guiding the inflow and outflow of fluid is introduced into the through-hole inlet, the outlet, or both of them.
14. The method according to any one of claims 12 to 13,
Wherein the applied electricity is a pulse or alternating current in the range of 0.2 to 25 kV and a frequency in the range of 0.5 to 50 kHz. The method of claim 3,
Wherein the atmospheric plasma is generated by an arc discharge or a plasma torch method.
Charging a liquid disinfectant into the container (S1);
Supplying a carrier gas for moving the sterilizing agent (S2);
Generating ozone (S3);
Mixing the ozone with the disinfectant (S4);
(S5) spraying the liquid disinfectant with the carrier gas in the form of fine particles;
A step S7 of flying the complex disinfectant fluid to reach the sterilizing object;
(S8) sterilizing the complex disinfection fluid by causing a complex reaction,
Wherein the final disinfecting fluid comprises a liquid disinfecting agent microparticle, ozone (vapor, liquid, or a combination thereof), and a carrier gas.
Charging a liquid disinfectant into the container (S1);
Supplying a carrier gas for moving the sterilizing agent (S2);
(S5) spraying the liquid disinfectant with the carrier gas in the form of fine particles;
(S6) a liquid disinfecting agent microparticle is activated by passing the liquid fine particles and the carrier gas through the atmospheric pressure plasma, and at the same time, a gaseous ozone is generated to form a complex disinfectant fluid;
A step S7 of flying the complex disinfectant fluid to reach the sterilizing object;
(S8) sterilizing the complex disinfection fluid by causing a complex reaction,
Wherein the final disinfecting fluid comprises a liquid disinfecting agent microparticle, ozone (vapor, liquid, or a combination thereof), and a carrier gas.
Charging a liquid disinfectant into the container (S1);
Supplying a carrier gas for moving the sterilizing agent (S2);
Generating ozone (S3);
Mixing the ozone with the disinfectant (S4);
(S5) spraying the liquid disinfectant with the carrier gas in the form of fine particles;
(S6) a liquid disinfecting agent microparticle is activated by passing the liquid fine particles and the carrier gas through the atmospheric pressure plasma, and at the same time, a gaseous ozone is generated to form a complex disinfectant fluid;
A step S7 of flying the complex disinfectant fluid to reach the sterilizing object;
(S8) sterilizing the complex disinfection fluid by causing a complex reaction,
Wherein the final disinfecting fluid comprises a liquid disinfecting agent microparticle, ozone (vapor, liquid, or a combination thereof), and a carrier gas.
22. The method according to any one of claims 20, 21 or 22,
Wherein the liquid disinfectant is one of hydrogen peroxide water, ozonated water, peracetic acid, hypochlorous acid, sodium percarbonate, glutaraldehyde, ethylenediamine-tetracetate, isopropyl alcohol, citric acid, lactic acid, A method of sterilization of fluid.
24. The method of claim 23,
Wherein the hydrogen peroxide solution has a hydrogen peroxide concentration of 50% or less, 35% or less, 15% or less, 7.5% or less, 6% or less, or 3% or less.
22. The method according to any one of claims 20, 21 or 22,
Wherein the carrier gas is one of air, oxygen, argon, nitrogen, helium, or a combination thereof.
23. The method according to any one of claims 20 to 22,
The ozone may be mixed with a liquid disinfectant in the form of gaseous ozone, a method of mixing with a carrier gas, a method of mixing with a particulate generation site, a method of mixing with a spray, or a combination thereof Compound disinfection fluid spray sterilization method.
23. The method according to any one of claims 20 to 22,
Wherein the mixing of the ozone is carried out in the form of liquid ozone water or ozone microbubbles in a liquid disinfecting agent.
22. The method according to any one of claims 20, 21 or 22,
Wherein the concentration of ozone in the final disinfection fluid is 15% or less based on the gas excluding the liquid.
22. The method according to any one of claims 20, 21 or 22,
Wherein the liquid fine particles are generated by an injection nozzle or an ultrasonic fine particle generator.
22. The method according to any one of claims 20, 21 or 22,
(UV) irradiating device to irradiate ultraviolet light (UV) to any one of the liquid disinfecting agent, the liquid disinfecting agent microparticles to be injected, the sterilizing object, or a combination thereof. .
23. The method according to any one of claims 21 to 22,
The atmospheric pressure plasma is generated by applying atmospheric pressure plasma to the plasma generating electrode to generate atmospheric plasma, and passing the carrier gas through the plasma generating region to the at least one plasma jet jetted from the generation site to a free space Wherein the method comprises the steps of:
23. The method according to any one of claims 21 to 22,
Wherein the atmospheric pressure plasma is generated by at least one dielectric barrier discharge (DBD) plasma electrode having a pair of plate-shaped electrodes and a through-hole for fluid flow in a direction perpendicular to the plate. .
33. The method of claim 32,
Wherein the dielectric barrier discharge plasma electrode is any one of a through-type spacing DBD system, a through-type surface DBD system, a through-type side DBD system, or a combination thereof.
33. The method of claim 32,
The plasma electrode may be formed of any one of a water repellent layer, a waterproof layer, a photocatalyst layer, a catalyst layer, a hydrophilic layer, an insulating layer, a dielectric layer, a protective layer, or a combination thereof in any one of a metal electrode, a dielectric, Wherein the sterilization method comprises the steps of:
33. The method of claim 32,
Wherein the plasma electrode further comprises a temperature control function for controlling the temperature of the electrode.
33. The method of claim 32,
Wherein a fluid induction tube for guiding the inflow and outflow of fluid is introduced into the through-hole inlet, the outlet, or both of them.
33. The method according to any one of claims 31 to 32,
Wherein the applied electricity is a pulse or alternating current in the range of 0.2 to 25 kV and a frequency in the range of 0.5 to 50 kHz. 23. The method of claim 22,
Wherein the atmospheric plasma is generated by an arc discharge or a plasma torch method.

Images