KR102394147B1 - Air cleaning system - Google Patents

Abstract

The present invention provides an air cleaning system capable of supplying sterilized and clean air by inducing a reaction with limewater to remove fine dust and contaminants contained in the air, and then sterilizing and disinfecting the photocatalyst through ultraviolet irradiation. The air cleaning system includes a fine dust removal device that removes fine dust, carbon dioxide, nitrogen oxides, and bacteria in the air by inducing a reaction with lime water; a high-performance photocatalytic sterilization device that kills and purifies bacteria remaining in the purified air discharged from the fine dust removal device through an ultraviolet photocatalytic reaction; and an oxygen generator that supplies oxygen to a conduit discharged from the high-performance photocatalytic sterilization device.

Description

Air cleaning system {Air cleaning system}

The present invention relates to an air cleaning system, and in particular, it reacts with lime water to remove fine dust and contaminants contained in the atmosphere, and then sterilizes the photocatalyst through ultraviolet irradiation to supply sterilized clean air. It is about an air cleaning system.

Exhaust gases from automobiles, factories, cogeneration plants, waste incinerators, thermal power plants, etc. and harmful gases such as fine dust and nitrogen oxides in the air lower air quality, pollute water and soil, and adversely affect humans, animals and plants. is accused of being the culprit.

Depending on the region, season, and weather conditions, fine dust in particular is a mass (sulfate, nitrate, etc.) formed by the reaction of air pollutants in the air, and carbon and soot generated during the combustion of fossil fuels such as coal and petroleum. , and minerals generated from soil dust on the surface of the earth.

Fine dust is a particulate matter that floats or is blown down in the atmosphere, and is generated a lot from exhaust gases such as factories and automobiles when fossil fuels such as coal and petroleum are burned. According to the size of the particles, it is divided into total suspended particles (TSP) with a size of less than 50 μm and particulate matter (PM) with very small particles. Fine dust is further divided into fine dust (PM10) with a diameter of less than 10 μm and ultrafine dust (PM25) with a diameter of less than 25 μm. If PM10 is about 1/5 to 1/7 smaller than the diameter of a human hair (50 to 70 μm), PM25 is so small that it is only about 1/20 to 1/30 of a human hair.

In particular, fine dust is so small that it is invisible to the naked eye, so when it floats in the air, it enters the lungs through the respiratory tract, or enters the body through blood vessels, it harms health. In particular, since ultrafine dust is smaller than fine dust, it is not filtered out of the airway when breathing, but penetrates into the lungs and is a direct cause of various respiratory diseases.

For reference, the World Health Organization (WHO) earlier presented air quality guidelines for fine dust (PM10, PM25), and the International Agency for Research on Cancer under the World Health Organization designated fine dust as a group 1 carcinogen and the severity of the harmful effects. has been warned.

Carbon dioxide, which is also the main culprit of global warming, was first mentioned in the Club of Rome report in 1972. It is also known that extreme weather events such as droughts, floods, heavy snow, heat waves, and cold waves, which are increasing in various places, are due to global warming.

Global warming is an increase in the concentration of greenhouse gases such as carbon dioxide and methane in the atmosphere due to human activities. there is.

This includes the theory that changes in land use since the beginning of agriculture also contributed to warming. Deforestation for agriculture, industrialization, urbanization, etc. is to remove sinks of carbon dioxide, a representative greenhouse gas. In other words, deforestation also plays a role in allowing carbon dioxide to remain in a higher concentration in the atmosphere, even if it emits the same amount of carbon dioxide.

Global warming is progressing faster in high latitudes. This is evidenced by the decrease in polar glaciers and mountain glaciers in alpine areas. The melting of mountain glaciers leads to sea level rise. Rising sea levels will cause flooding and flooding in coastal areas where one-third of humanity lives. There are reports of coral reef islands in the Pacific disappearing into the water. Global warming will change the patterns of ecosystems and agriculture, and affect human health. In particular, warming is highly likely to cause changes in climate patterns, leading to unprecedented weather events.

As a part of the fine dust reduction plan, a 'fine dust removal device using a vortex tube and an air purification system using the same' is proposed in Korean Patent Publication No. 10-2018-0027128.

This prior art uses the principle of a vortex tube to remove fine dust by maximizing the contact time and area while nano-bubbled water particles and external air with external air pass through the inside of the vortex tube. Considering the structure and scale, it is said that it is suitable for removing fine dust in a room with limited space, but it is too insufficient to remove fine dust in the air, which cannot be compared to indoors.

In addition, the 'High-concentration dust purifying device using tornado spray water' of Korean Patent Registration No. 10-1505584 is installed in factories, residential buildings, etc. such as manufacturing workshops or FRP treatment facilities to discharge internal air to the outside. It is possible to purify without driving means such as an electric motor by rotating by the water pressure when spraying water in a whirlpool shape through the outlet formed in the opposite direction of rotation, and this prior art also removes dust from a limited space While there are aspects suitable for this purpose, it is insufficient to efficiently remove fine dust in the atmosphere.

In addition, Japanese Republished Patent Publication No. WO2010/076853 discloses that the water tank and the water tank are installed with a difference in height between the watering means, the spray generating means, and the spraying means, and below the watering means, the spray generating means, and the spraying means, from the bottom to the bottom. The exhaust gas introduced into the lower part of the water tank is provided with a bubble dispersing means, an intermediate bubble dispersing means and an upper bubble dispersing means so that it is dispersed into small bubbles as it floats toward the water surface and is filtered to fine dust in the exhaust gas. The odor is a deodorizing device installed in the exhaust duct, and it is a polluting gas dust removal and purification device that washes and purifies the smoke or flue gas discharged from the flue of an incineration facility or factory.

However, in this prior art, since the range of washing and purifying the discharged smoke or exhaust gas is extremely limited to the year of incineration facilities or factories, it is difficult to use it for the removal of fine dust in the atmosphere. very inappropriate when

In addition, since the internal structure is too complicated, the manufacturing difficulty and the internal cleaning difficulty are very high.

In particular, all of the above prior arts cannot remove carbon dioxide when purifying the exhaust gas with water, and cannot completely remove ultrafine dust remaining in the exhaust gas discharged to the outlet through the final purification step.

In the case of Japanese Republished Patent Publication No. WO2010/076853, it is deodorized with deodorizing means such as charcoal, activated carbon, and chemical deodorant in the exhaust duct where the exhaust gas that has been purified and dedusted is discharged. cannot be removed

Since the Industrial Revolution, the use of fossil fuels has increased due to the increase in the use of fossil fuels since the Industrial Revolution, and greenhouse gas emissions have increased.

The greenhouse effect is a phenomenon in which heat radiated from the earth is absorbed back to the earth by greenhouse gases. Excessive greenhouse gases, particularly large amounts of carbon dioxide, are the cause of global warming. It has nothing to do with the removal of harmful substances from

Korean Patent Publication No. 10-2018-0027128 Republic of Korea Patent Registration No. 10-1505584 Japanese Patent Publication No. WO2010/076853

The present invention provides an air cleaning system capable of supplying sterilized clean air by reacting with lime water to remove fine dust and contaminants contained in the atmosphere, and then sterilizing and disinfecting the photocatalyst through ultraviolet irradiation. There is a purpose.

An air cleaning system according to a preferred embodiment of the present invention,

a fine dust removal device for removing fine dust, carbon dioxide, nitrogen oxides, and bacteria in the air by reacting with lime water; A high-function photocatalytic sterilization device that kills and purifies the remaining bacteria in the purified air discharged from the fine dust removal device by UV photocatalytic reaction; and an oxygen generator for supplying oxygen to the purified air discharged from the high-function photocatalytic sterilizer to increase the oxygen concentration.

In addition, the fine dust removal device includes a water tank body in which lime water is accommodated, an outlet is provided at the lower end, an exhaust duct is provided at the upper part, and an outdoor air inlet pipe is installed to introduce outdoor air into the inside; a first fine dust removal unit provided in the water tank body, the outside air flowing into the water tank body reacting with the lime water accommodated in the water tank body to remove fine dust contained in the outside air; It is provided in the water tank body, and the air is introduced into the water tank body in a pulsating manner, and while the incoming air is discharged, a bubble mass is formed to cause agitation with the lime water. a second fine dust removal unit for removing fine dust caused by bubbles by generating bubbles to prevent settling in the water tank body while removing the fine dust; It is provided in the water tank body, and an ultrasonic diaphragm is installed to generate ultrasonic vibration, so that the fine dust contained in the outdoor air that is not removed by the first and second fine dust removal units by the ultrasonic vibration generated from the ultrasonic diaphragm is subjected to ultrasonic vibration. a third fine dust removal unit to remove; and a controller installed to control the inflow of air from the ultrasonic diaphragm of the third fine dust removal unit and the second fine dust removal unit;

A high-function photocatalytic sterilizer includes a housing body having a sterilization module accommodation chamber, a housing lower cover installed openly and openably on the lower part of the housing body and having an air inlet communicating with the exhaust duct at one location of the housing body, the housing body; a housing comprising a housing upper cover installed on the upper part of the housing to be openable and openable and having a first air outlet; A photocatalytic sterilization chamber that has a trapezoidal cross section by a front plate and a rear plate that are parallel to each other at regular intervals and is connected to the front plate and the rear plate and is inclined at a predetermined angle, and is closed inside by these front and rear plates and the inclined plate a sterilization duct having a photocatalyst material coated on all inner surfaces of the photocatalytic sterilization chamber, including a sterilization duct having a blower inlet formed in the lower portion of the photocatalytic sterilization chamber; at least one photocatalyst channel holder disposed on the inner wall of the sterilization duct; a photocatalyst channel detachably fitted to the photocatalyst channel holder and having catalyst expansion wings radially formed on the inner surface of the tunnel-type photocatalytic reaction chamber and the photocatalytic reaction chamber and coated with a photocatalytic coating composition on the outer surface; A high-function photocatalyst sterilization module that is disposed inside the photocatalyst channel and causes a photocatalytic reaction by irradiating ultraviolet rays with a photocatalytic coating composition to cause a reaction between ultraviolet rays and photocatalytic materials to kill organic materials such as bacteria and viruses, and ; a blower for generating a blowing force to suck outside air from an air inlet and injecting it into the sterilization duct; and an air filter installed on the side of the air intake to remove fine dust and contaminants in the air.

In addition, the first fine dust removal unit is disposed inside the water tank body and is provided to partition an upper area and a lower area, a through hole is formed so that the upper area and the lower area are in contact with each other, and when outside air is introduced into the lower area, an inner partition plate that partitions the inside of the tank body up and down so that fine dust and carbon dioxide are primarily removed as a large amount of air bubbles are generated and the exhaust gas moves to the upper area through the through hole; It is provided inside the water tank body so that fine dust and carbon dioxide are primarily removed in the process of aeration while a large amount of air bubbles are generated in the lower area partitioned up and down by the inner partition plate, and a large amount of outside air is introduced into the lower area outside air inlet pipe leading to ejection from; The outdoor air ejected into the lower region through the outdoor air inlet pipe is formed so that only the lower part is opened so as to collect the rising exhaust gas after being primarily dusted by lime water, and is provided in the upper region in the water tank body, and the process of collecting the exhaust gas an inner housing from which fine dust and carbon dioxide are secondarily removed by generating air bubbles; And installed to be in contact with the inner housing, the upper part is formed to be in contact with the inner housing and the lower part is opened to exhaust the exhaust gas collected in the inner housing, and in the process of exhausting, bubbles are generated to thirdly remove fine dust and carbon dioxide Including an internal exhaust pipe;

The second fine dust removal unit may include: an air supply pipe installed in the form of a double pipe inside the outside air inlet pipe to supply air in a pulsating manner to the lower region of the water tank body; And while being in contact with the lower end of the air supply pipe and installed in a horizontal state in the lower region of the water tank body, the air supplied through the air supply pipe is discharged through the outer periphery while forming bubbles in the lower region of the water tank body and stirring and a bubble generating plate formed in a circular plate shape to cause an action.

In addition, the lower end of the outdoor air inlet pipe is characterized in that it includes a; diffusion outlet formed in the shape of a funnel that is formed to have a diameter wider toward the bottom so that the incoming outside air is diffused and discharged.

In addition, the lower end of the inner housing includes an exhaust gas guide for guiding the rising exhaust gas after being primarily dust-removed in the lower region by having an inclined surface in the shape of an outwardly widening portion, and to the upper side of the exhaust gas guide It is installed so that the lower opening of the internal exhaust pipe is disposed adjacently at a predetermined distance, and the exhaust gas that rises after being primarily dusted in the lower area is blocked by the exhaust gas guide part so that it does not flow into the lower opening of the internal exhaust pipe characterized.

In addition, the bubble generating plate may include an upper plate member installed to be in contact with the air supply pipe; and a lower plate member installed at a predetermined interval under the upper plate member, wherein air is discharged to the outer periphery through between the upper plate member and the lower plate member to form bubbles in the lower region of the water tank body characterized by forming.

In addition, the upper plate member and the lower plate are installed between the upper plate member and the lower plate member, and to guide the air discharged through the space between the upper plate member and the lower plate member so that bubbles can be stably formed. Further comprising a; vane guide member 1381 installed to form a radial on any one surface corresponding to each other of the member 1361, the lower plate member is fixed to the bottom of the lower region partitioned by the water tank body, the lower plate An upper plate is installed to form an upper portion of the member at a predetermined interval, and the lower end of the air supply pipe is installed in contact with the upper plate member.

In addition, the high-function photocatalyst sterilizer includes a housing body having a sterilization module storage room, a housing lower cover installed openly and openably on the lower part of the housing body and having an air inlet at one location of the housing body, and opening and closing on the upper part of the housing body a housing comprising a housing upper cover operably installed and having a first air outlet; a high-function photocatalytic sterilization module having a sterilization duct that causes a reaction between LED ultraviolet rays and a photocatalytic material to kill organic substances such as bacteria and viruses, and is inserted into the housing and fixedly installed; a blower for generating a blowing force, sucking outside air from an air intake port, and injecting it into the sterilization duct; An air filter installed on the side of the air intake to remove fine dust and contaminants in the air; including,

The high-functional photocatalyst sterilization module has a trapezoidal cross section by a front plate and a rear plate and a front plate and a rear plate that are parallel to each other at regular intervals and connected to the front plate and the rear plate and inclined at a predetermined angle. a sterilization duct including a photocatalyst sterilization chamber closed with a photocatalyst sterilization chamber, the photocatalyst material is coated on all inner surfaces of the photocatalyst sterilization chamber, and a blower inlet is formed under the photocatalyst sterilization chamber; at least one photocatalyst channel holder disposed on the inner wall of the sterilization duct; a photocatalyst channel detachably fitted to the photocatalyst channel holder and having catalyst expansion wings radially formed on the inner surface of the tunnel-type photocatalytic reaction chamber and the photocatalytic reaction chamber and coated with a photocatalytic coating composition on the inner and outer surfaces; and an ultraviolet lamp disposed inside the photocatalytic channel and irradiating ultraviolet light with the photocatalyst coating composition to cause a photocatalytic reaction.

In addition, the housing body has a predetermined radius of curvature on both left and right sides to form a circular column shape, and an air filter holder for mounting an air filter is further installed on the inner surface of the housing lower cover, and the air filter holder has one side of the air filter holder. It is characterized in that the air filter replacement opening for replacing the filter is formed.

In addition, the LED strip installation rod having a circular cross section over a certain length on the outside of the photocatalyst channel and coated with titanium dioxide (TiO ₂ ) on the outer peripheral surface of the LED strip installation rod It consists of an LED strip that generates LED ultraviolet rays It is characterized in that one or more LED ultraviolet emitters disposed in the photocatalytic sterilization room are further installed.

In addition, for internal cleaning and management of the sterilization duct, an opening 211a for duct management is formed on the front plate of the sterilization duct, and a photocatalyst front scattering plate base equipped with a photocatalyst front scattering plate is detachably installed in the duct management opening. It is characterized by being

In addition, by bending steel plates on both swash plates and front plates of the sterilization duct, umbels having an angle of 60 degrees each have a certain width and are continuously connected to form wrinkles, so that the photocatalyst coating composition is coated to induce scattering and diffusion of ultraviolet rays. An inclined scattering plate and a photocatalyst front scattering plate are installed respectively, and for photocatalyst scattering and diffusion, the ridge of the photocatalyst inclined scattering plate is disposed in a direction perpendicular to that of the photocatalyst front scattering plate, and the longitudinal direction of the ridge of the photocatalyst front scattering plate is air It is characterized in that it is arranged to coincide with the blowing direction in order to minimize the resistance of the flow.

In addition, in order to increase the sterilization and decomposition efficiency by partially recirculating the photocatalyst product, a photocatalyst recirculation outlet is further formed at the upper portion of the sterilization duct, and between the housing and the sterilization duct, the photocatalyst recirculation outlet and the air inlet of the blower are in communication It is characterized in that a photocatalyst recirculation passage is provided.

In addition, the photocatalyst coating composition includes 10 to 30 parts by weight of an ultraviolet curable acrylic resin, 1 to 10 parts by weight of a silane coupling agent, and 0.1 to 5 parts by weight of a photoinitiator, based on 100 parts by weight of the photocatalyst sol, a titanium precursor, an acid catalyst , 100 parts by weight of a titanium dioxide photocatalyst prepared by mixing an alcoholic solvent and distilled water, 10 to 30 parts by weight of molybdenum disulfide nanowire, and 1 to 10 parts by weight of cerium aluminide, lupeol and an alkalizing agent in an alcohol-based dispersion solvent It is characterized in that it is prepared by mixing.

In addition, the photocatalytic sol is prepared by stirring and heating 100 parts by weight of a titanium precursor, 18 to 25 parts by weight of an acid catalyst, 25 to 35 parts by weight of an alcoholic solvent, and 250 to 350 parts by weight of distilled water to prepare a titanium dioxide photocatalyst; And 100 parts by weight of titanium dioxide photocatalyst, 10 to 30 parts by weight of molybdenum disulfide nanowire, and 1 to 10 parts by weight of cerium aluminide, mixed with an alcoholic dispersion solvent containing lupeol and an alkalizing agent, the solid content is 5 to 30% by weight and adjusting the pH to be 4.0 to 7.0.

In addition, the molybdenum disulfide nanowire is supersaturated by sonication and stirring of a precursor solution of molybdenum disulfide at 70 to 90° C. for 30 minutes to 2 hours, followed by cooling to precipitate a powdery molybdenum disulfide intermediate material. to do; and heat-treating the intermediate material; The cerium aluminide is at least one powder selected from sodium hydride (NaH) and lithium hydride (LiH), cerium chloride (CeCl ₃ ) powder and aluminum chloride (AlCl ₃ ) powder and 5 to 20: 1: 1 to 5 molar ratio mixing to form a mixed powder; generating a composite powder containing cerium aluminide by putting the mixed powder together with a ball into a reaction vessel, filling argon, helium or nitrogen gas, and then performing ball milling; and dispersing the resulting composite powder in distilled water, and then filtering to recover the cerium aluminide powder.

According to the air cleaning system of the present invention, fine dust, carbon dioxide, nitrogen oxide, and bacteria in the atmosphere are reacted with lime water by the fine dust removal device to firstly remove fine dust and pollutants contained in the atmosphere, and secondly Through a high-function photocatalyst sterilizer, sterilized clean air can be supplied by sterilizing the photocatalyst through ultraviolet irradiation.

In addition, the photocatalyst coating composition is coated on the entire inner and outer surfaces of the inner and outer surfaces of the sterilization duct and the photocatalyst channel included in the high-function photocatalytic sterilizer to maximize the sterilization effect of air containing various bacteria and viruses such as COVID-19. It works. In addition, a photocatalyst recirculation path is provided between the housing and the sterilization duct to increase sterilization efficiency. In addition, the LED strip installed on the LED UV emitter uses a UV LED of 200 to 300 nm to increase the replacement cycle and lifespan. In addition, by applying the sterilization duct and the photocatalyst scattering plate, the area of photochemical reaction is increased, so more radicals (OH-) can be generated, and the volume of the LED lamp is reduced, so the blowing resistance of the blowing fan is reduced and the emission efficiency of radicals is decreased. It has the advantage of increasing the sterilization power. In addition, the improved photocatalyst coating composition may be coated to have exceptionally excellent decomposition performance of harmful gases and surface durability.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the present invention, so the present invention is limited to the matters described in the accompanying drawings It should not be construed as being limited.
1 is a block diagram of an air cleaning system according to an embodiment of the present invention;
Figure 2 is a block diagram of the atmospheric fine dust removal device applied to the present invention.
Figure 3 is a block diagram of the atmospheric fine dust removal device applied to the present invention.
4 is an enlarged partial enlarged view of an exhaust gas guide formed at the lower end of the inner housing in the first fine dust removal unit provided in the atmospheric fine dust removal device applied to the present invention.
5 is a perspective view of a bubble generating plate comprising an upper plate member and a lower plate member provided in a second fine dust removing unit provided in the atmospheric fine dust removing device applied to the present invention;
FIG. 6 is a view in which an upper plate member and a lower plate member constituting the bubble generating plate shown in FIG. 4 are separated; FIG.
7 is a block diagram of a controller provided in the atmospheric fine dust removal device applied to the present invention.
8 is a perspective view of a high-function photocatalytic sterilizer applied to the air cleaning system of the present invention.
9 is an exploded perspective view of FIG. 8 ;
10 is an exploded perspective view between a photocatalyst channel holder and a photocatalyst channel applied to the high-function photocatalyst sterilizer of FIG. 8;
Fig. 11 is a front view of Fig. 8;
Fig. 12 is a cross-sectional view taken along line AA of Fig. 11;
Fig. 13 is a cross-sectional view taken along line BB of Fig. 11;
Fig. 14 is a cross-sectional view taken along line CC of Fig. 11;
15 is a modified example of a high-function photocatalyst sterilization module applied to a high-function photocatalyst sterilization apparatus according to an embodiment of the present invention.
16 is a plan view of the high-function photocatalyst sterilization module shown in FIG. 15;

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the presented embodiments are illustrative for a clear understanding of the present invention, and the present invention is not limited thereto.

An air cleaning system according to the present invention includes a fine dust removal device 1000 for removing fine dust, carbon dioxide, nitrogen oxides, and bacteria in the atmosphere by reacting with lime water as shown in FIG. 1 ; a high-function photocatalytic sterilizer 2000 for killing and purifying bacteria remaining in the purified air discharged from the fine dust removal device 1000 by UV photocatalytic reaction; The high-function photocatalytic sterilizer 2000 includes an oxygen generator 3000 that additionally supplies oxygen in order to increase the concentration of oxygen in the purified air that is sterilized and discharged. Here, since the oxygen generator 3000 is a well-known technology for supplying only oxygen by separating nitrogen and oxygen in the external air, a detailed description thereof will be omitted.

As shown in FIGS. 2 and 3 , the fine dust removal device 1000 introduces outdoor air into the water tank body 1100 in which lime water is accommodated and the water tank body 1100 to react with lime water to remove fine dust. A dust removal unit 1200, a second fine dust removal unit 1300 that removes fine dust by bubbles formed while supplying air, and a third fine dust removal unit that removes fine dust by ultrasonic vibration (1400) and the ultrasonic diaphragm and the controller 1500 for controlling the air supply for bubble formation is preferably configured to include.

The water tank body 1100 accommodates lime water therein, an outlet 1121 is provided at the lower end, an exhaust duct 1141 is provided at the upper end, and an outdoor air inlet pipe 1241 is installed so that outdoor air can be introduced into the inside. It is preferable to be This water tank body 1100 has a large capacity suitable for efficiently removing fine dust and harmful gases in the outdoor air with a large inflow per minute by storing a large amount of lime water (purified water), and is sufficient to store a large amount of purified water for a long time, even though it is for large-capacity purified water. It is preferably made of thick steel pipe or thick concrete with strength.

In addition, it is preferable that the water tank body 1100 is provided with a fixed quantity of lime water supply pipe 1601 so that a certain amount of lime water is always stored in the water tank body, and the precipitated calcium carbonate is provided at the outlet 1121 at the lower end. A drain pipe for discharging excess and contaminated limewater is installed, and the drain pipe is also useful for discharging the precipitated calcium carbonate out of the tank.

The first fine dust removal unit 1200 is provided in the water tank body 1100, and the outside air flowing into the water tank body 1100 reacts with the lime water contained in the water tank body 1100 to react with the fine dust contained in the outside air. is to be removed. The first fine dust removal unit 1200 includes an internal partition plate 1221 provided inside the water tank body 1100, an outdoor air inlet pipe 1241, an internal housing 1261, and an internal exhaust pipe 1281. desirable.

The inner partition plate 1221 is disposed inside the water tank body 1100 to partition the inside of the water tank body 1100 up and down to divide it into an upper area and a lower area, and the inner partition plate 1221 has an upper area and A through hole 1231 is formed so that the lower region is in contact, and when outside air is introduced into the lower region, a large amount of air bubbles are generated and fine dust and carbon dioxide are primarily removed, and the exhaust gas moves to the upper region through the through hole 1231 . make it possible In addition, the outdoor air inlet pipe 1241 is provided with the water tank body 1100 so that fine dust and carbon dioxide are primarily removed in the aeration process while a large amount of air bubbles are generated in the lower region divided up and down by the inner partition plate 1221 . ) is provided inside.

This outdoor air inlet pipe 1241 introduces a large amount of outside air and induces it to be ejected from the lower region, and an outdoor air suction fan 1181 is installed outside the outdoor air inlet pipe 1241 to be driven by the suction motor 1161. Outside air is introduced by the suction power of the outside air suction fan 1181 . At this time, the outdoor air suction fan 1181 is effective in effectively removing fine dust, ultra-fine dust, and carbon dioxide in the atmosphere by sucking a large amount of outdoor air in all directions because the suction power of the outdoor air is very strong, and the center of the water tank body 1100 is installed so that the outdoor air inlet pipe 1241 is erected in the , it may be made of any one of a turbo fan. Considering the weight, operation and installation cost burden, it is desirable to have a turbofan that is compact and can exhibit various performance without any regrets.

The outdoor air inlet pipe 1241 induces and discharges the outdoor air introduced by the outdoor air suction fan 1181 into lime water from the inside of the water tank body 1100, and it is preferable to have a straight pipe suitable for minimizing the inflow resistance of the outdoor air.

On the other hand, it is preferable that the lower end of the outdoor air inlet pipe 1241 expands the contact area with the lime water by allowing the incoming outside air to be diffused and discharged. It is preferable that the diffusion outlet 1251 is formed in a funnel shape that is widened. The outdoor air flowing into the water tank body 1100 through the diffusion outlet 1251 is diffused and discharged to increase the contact area with the lime water to increase the foreign material removal performance. In addition, the inner housing 1261 is provided in the water tank body 1100 so as to collect the exhaust gas that rises after the outdoor air ejected to the lower region through the outdoor air inlet pipe 1241 is primarily dusted by lime water, The inner housing 1261 is formed so that only the lower part is opened, and is provided in the upper area in the water tank body 1100, and it is possible to generate air bubbles in the process of collecting the exhaust gas to secondaryly remove fine dust and carbon dioxide.

The inner housing 1261 forms an air pocket in the water tank body 1100 to limit the level of purified water flowing into the lower end of the inner housing 1261 between the surface of the purified water and the ceiling of the inner housing 1261 . This is a structure suitable for trapping the rising exhaust gas after being primarily dusted by lime water near the lower end of the outdoor air inlet pipe 1241 from the outside air ejected to the lower end of the outdoor air inlet pipe 1241. .

Here, the lime water is purified water that removes ultrafine dust, fine dust, and carbon dioxide in the outdoor air. When carbon dioxide mixed with outside air is mixed with lime water, it is converted into calcium carbonate or calcium hydrogen carbonate. In other words, calcium hydroxide dissolved in water is lime water. When you breathe in, you can observe that the solution becomes cloudy, because calcium hydroxide dissolved in water and carbon dioxide in the breath react to form calcium carbonate, which is insoluble in water. Calcium hydroxide is often used to detect carbon dioxide, and if more carbon dioxide is passed through the calcium hydroxide than required, calcium bicarbonate, a salt soluble in water, is made again, and the solution becomes transparent again.

The overall reaction equation for this reaction is as follows.

① Ca(OH) ₂ + CO ₂ → CaCO ₃ + H ₂ O (the process of making calcium carbonate)

② CaCO ₃ + H ₂ O + CO ₂ → Ca(HCO ₃ ) ₂ (a process in which a large amount of carbon dioxide enters and reacts with calcium carbonate to form calcium hydrogen carbonate)

Therefore, lime water suitable for purification is used to remove carbon dioxide, a greenhouse gas, by changing it to calcium carbonate or calcium hydrogen carbonate. Calcium carbonate and calcium hydrogen carbonate sink to the bottom of the tank body 1100 because the specific gravity is greater than that of water.

In addition, the internal exhaust pipe 1281 is configured to be installed to be in contact with the internal housing 1261 , and the upper part of the internal exhaust pipe 1281 is formed to be in contact with the internal housing 1261 and the lower part is open to the internal housing 1261 . It plays a role in exhausting the collected exhaust gas, and in the process of exhausting, it creates bubbles to remove fine dust and carbon dioxide tertiarily.

It is preferable that the internal exhaust pipe 1281 prevents exhaust gas from flowing through the lower opening. As a configuration for this, the lower end of the inner housing 1261 is formed with an inclined surface of a shape that opens outward, thereby primarily damping vibration in the lower region. An exhaust gas guide 1271 capable of guiding the rising exhaust gas is formed, and the lower opening of the internal exhaust pipe 1281 is disposed at a predetermined distance adjacent to the upper side of the exhaust gas guide 1271 The exhaust gas that rises after being installed and primarily dust-removed in the lower region is blocked by the exhaust gas guide part 1271 so that it does not flow into the lower opening of the internal exhaust pipe 1281, so that the lower end of the internal exhaust pipe 1281 will cause only exhaust.

The first fine dust removal unit 1200 configured as described above is filled with lime water enough to submerge the lower part of the inner housing 1261 installed in the water tank body 1100, and operates the air suction fan 1181 to operate the outdoor air inlet pipe. When external air is introduced into the lower area inside the water tank body 1100 through 1241, a large amount of air bubbles are generated in the lime water in the lower area and aerated to remove fine dust and carbon dioxide, and then the air bubbles are removed from the inner housing. Water droplets bounce off the surface of the lime water located inside (1261) and burst, and the air gathers above the water surface of the lime water inside the inner housing 1261 to form an air pocket.

At this time, the water droplets falling against the ceiling of the inner housing 1261 and the water droplets falling without reaching the inner housing 1261 are mixed with the lime water in the inner housing, and fine dust and carbon dioxide are removed by the lime water including this process.

In addition, while the secondary removal process of fine dust and carbon dioxide continues, on the one hand, fine dust and carbon dioxide collected in the air pocket are exhausted together with an internal exhaust pipe internally connected to the upper part of the inner housing 1261 in which the air pocket is formed. As it exits through 1281, bubbles are generated in the lime water in the internal exhaust pipe 1281, and the bubbles swirl around the lower opening of the internal exhaust pipe 1281 to float into the lime water of the water tank body 1100 and explode in the process of tertiary This removes fine dust and carbon dioxide.

As described above, the air that has undergone the tertiary fine dust and carbon dioxide removal step is diffused into the atmosphere through the exhaust duct 1141 , and various bacteria mixed in the air in the process are sterilized by the sterilizer 170 , and in the oxygen generator 180 . It is exhausted together with the generated oxygen. That is, it is hygienic because it sterilizes the bacteria in the air that escapes through the exhaust duct after fine dust and carbon dioxide are removed with the sterilizer.

In addition, carbon dioxide contained in external air is removed by calcium carbonate or hydrogen carbonate calcium formation by calcium hydroxide in limewater, and calcium carbonate or calcium hydrogen carbonate settles to the bottom of the tank body. The lime water and calcium carbonate or calcium hydrogen carbonate that are lowered and collected at the bottom of the tank body 1100 are collected through the outlet 1121 and disposed of in a safe manner.

The second fine dust removal unit 1300 is provided in the water tank body 1100, and pulsatingly introduces air into the water tank body 1100 and forms a bubble mass as the inflow air is discharged, thereby stirring with lime water. This is to remove fine dust caused by bubbles by generating bubbles to prevent settling in the water tank body 1100 while removing fine dust contained in outside air that is not removed by the first fine dust removal unit 1200. The second fine dust removal unit 1300 preferably includes an air supply pipe 1321 and a bubble generating plate 1331 . The air supply pipe 1321 is installed to supply the air supplied in a pulsating manner from the compressor 1311 into the water tank body 1100, and the air supply pipe 1321 is installed vertically inside the water tank body 1100. It is preferable that an air supply pipe 1321 in the form of a double pipe is installed inside the outdoor air inlet pipe 1241 to supply air to the bottom of the lower area of the water tank body 1100 .

In addition, the bubble generating plate 1331 is in contact with the lower end of the air supply pipe 1321 and is installed to be positioned horizontally in the lower region of the water tank body 1100 so that the air supplied through the air supply pipe 1321 is It is preferable to form bubbles in the lower region of the water tank body 1100 while being discharged through the outer periphery of the bubble generating plate 1331 to cause agitation. Here, it is preferable that the bubble generating plate 1331 has a circular plate shape. That is, the bubble generating plate 1331 has an upper plate member 1341 installed so as to be in contact with the air supply pipe 1321 , and a lower plate member 1361 is installed at a predetermined interval under the upper plate member 1341 . It is preferable to be configured so that it becomes possible.

Accordingly, as shown in FIGS. 3 to 6 , the bubble generating plate 1331 allows air to be discharged to the outer periphery through the space between the upper plate member 1341 and the lower plate member 1361, so that the lower part of the water tank body 1100 is provided. Bubbles can be formed in the area.

In addition, in the bubble generating plate 1331 , a vane guide member 1381 is installed between the upper plate member 1341 and the lower plate member 1361 , and bubbles are generated by the vane guide member 1381 . It is preferable to be formed stably, and the vane guide member 1381 is the upper plate member 1341 to guide the air discharged through between the upper plate member 1341 and the lower plate member 1361 . ) and the lower plate member 1361 is preferably installed to form a radial on any one surface corresponding to each other. It is preferable that the vane guide member 1381 is installed on one surface of the lower plate member 1361 to be divided into several equal parts based on the circumference to guide the air to be discharged.

In addition, the lower plate member 1361 is fixedly installed at the bottom of the lower region partitioned by the water tank body 1100, and the upper plate member 1341 is installed to form a predetermined interval with the upper portion of the lower plate member 1361. It is preferable that the lower end of the air supply pipe is installed in contact with the upper plate member 1341 .

The bubble generating plate 1331 has a lower region in the water tank body 1100 while air supplied through the air supply pipe 1321 is discharged to the outer periphery through between the upper plate member 1341 and the lower plate member 1361 . A bubble is formed in the air, and a sufficient stirring action is made in the water tank body 1100 by the bubble, and at the same time, it is possible to remove fine dust by maximizing the air supply capacity.

In particular, the efficiency of the second fine dust removal unit 1300 can be maximized by allowing bubbles to be formed in a pulsating manner in the inside of the water tank.

The third fine dust removal unit 1400 is to remove fine dust by ultrasonic vibration, and an ultrasonic diaphragm 1421 is installed to generate ultrasonic vibration in the water tank body 1100 to generate the ultrasonic diaphragm 1421 The first and second fine dust removal units 1300 remove fine dust contained in the outside air that is not removed by ultrasonic vibration.

In addition, the controller 1500 is installed to control the inflow of air from the ultrasonic diaphragm 1421 of the third fine dust removal unit 1400 and the second fine dust removal unit 1300 . The controller 1500 controls the operation of the ultrasonic diaphragm 1421 and the compressor 1311 . As shown in FIG. 7 , the controller 1500 performing this role may include a central processing unit 1521 ( CPU), a memory 154 , MEMORY , and a support circuit 1561 , SUPPORT CIRCUIT. The central processing unit 1521 may be one of various computer processors that can be industrially applied to control the operation of the ultrasonic diaphragm 1421 and the compressor 1311 . The memories 1541 and MEMORY are connected to the central processing unit 152 . The memory 1541 is a computer-readable recording medium, which may be installed locally or remotely, and may be easily available such as, for example, random access memory (RAM), ROM, floppy disk, hard disk, or any digital storage form. At least one memory. The support circuit 1561 (SUPPORT CIRCUIT) is coupled with the central processing unit 1521 to support typical operation of the processor. The support circuit 1561 may include a cache, a power supply, a clock circuit, an input/output circuit, a subsystem, and the like.

The controller 1500 controls the operation of the ultrasonic diaphragm 1421 and the compressor 1311 . In this case, a series of processes in which the controller 1500 controls the operations of the ultrasonic diaphragm 1421 and the compressor 1311 may be stored in the memory 1541 . Typically, software routines may be stored in memory 1541 . Software routines may also be stored or executed by other central processing units (not shown).

Although the process according to the present invention has been described as being executed by a software routine, it is also possible that at least some of the processes of the present invention are performed by hardware. As such, the processes of the present invention may be implemented in software executed on a computer system, implemented in hardware such as an integrated circuit, or implemented by a combination of software and hardware. According to the apparatus 1000 for removing fine dust of the present invention, unlike a small-scale vibration suppression apparatus that cannot be implemented with low-performance vibration suppression means of the prior art, fine dust including ultrafine dust in the atmosphere and carbon dioxide, a greenhouse gas, can be removed from a wide area in a short time. Since it can be effectively removed by blowing it in, it is perfect for purifying the polluted air, and the simple structure makes it possible to manufacture and install it at a low cost, so that tangible results can be expected for air quality improvement and environmental protection. In particular, a first fine dust removal unit that removes fine dust, carbon dioxide, nitrogen oxides, and bacteria from the atmosphere by reacting with lime water, a second fine dust removal unit that supplies air and removes it by bubbles formed while it is discharged, and ultrasonic vibration Even ultrafine dust and bacteria in the air can be extensively and efficiently removed by the third fine dust removal unit removed by

The photocatalytic sterilizer 10 according to the present embodiment includes a housing 12 as shown in FIGS. 8 to 12 . The housing 12 includes a housing body 121 having a sterilization module storage chamber 121a, and an air intake port 122a installed at a location of the housing body 121 to be opened and closed at the lower portion of the housing body 121. It consists of a housing lower cover 122 having a housing, and a housing upper cover 123 which is installed to be opened and closed on the upper portion of the housing body 121 and has a first air outlet 123a. Here, the housing body 121 has a predetermined radius of curvature R on the left and right sides as shown in FIG. 12 to form a circular column shape. As described above, the housing body 121 has a beautiful appearance as if an arch column is formed by forming a radius of curvature R on both sides of the housing body 121 . In addition, since the housing lower cover 122 and the housing upper cover 123 can be separated by disassembling the screws, a high-function photocatalytic sterilization module 20 to be described later can be easily inserted into the sterilization module storage chamber 121a in the housing 12 to be installed. can

A second air outlet 122b may be additionally installed on the upper front side of the housing body 121 . Therefore, in this embodiment, the purified air is discharged through the first air outlet 123a and the second air outlet 122b.

A plurality of moving wheels 5 may be installed on the lower surface of the housing 12 as shown in FIG. 11 . Therefore, the photocatalytic sterilizer 10 can be easily moved through the housing 12 side moving wheel 5 .

An air filter holder 124 for mounting the air filter 40 is installed on the inner surface of the housing lower cover 122 . An air filter replacement opening 125 for replacing the air filter 40 is formed on one side of the air filter holder 124 as shown in FIG. 9 . Therefore, it is possible to easily install the air filter 40 by simply inserting it into the air filter holder 124 .

A high-function photocatalytic sterilization module 20 is installed inside the housing 12 . The high-function photocatalyst sterilization module 20 has a sterilization duct 210 and generates ultraviolet rays inside it to oxidize hydroxyl radicals (OH-) (hereinafter referred to as 'radicals') generated by a reaction between photocatalytic materials. It decomposes and destroys organic substances such as bacteria and viruses. The high-function photocatalyst sterilization module 20 will be described later.

A blower 30 is provided for sucking the outside air in the room where the photocatalytic sterilization device 10 is disposed and injecting it into the sterilization duct 210 . The blower 30 is mounted in the blowing chamber 217 on the lower side of the sterilization duct 210 as shown in FIGS. 9 and 13 . The blower 30 generates blowing force, sucks in outside air through the air intake port 122a on the housing lower cover 122 side, and injects it into the sterilization duct 210 , and then the upper front surface of the housing upper cover 123 and the housing 12 . It is discharged through the first and second air outlets (123a, 122b) formed in the .

An air filter 40 for removing fine dust and contaminants in the air is installed on the side of the air intake 122a of the housing lower cover 122 . In this embodiment, the air filter 40 is accommodated in a replaceable air filter holder 124 installed on the inner surface of the housing lower cover (122). The air filter 40 may be any one or more of a pre-filter, a HEPA filter, and an ultra-high performance filter (ULPA, Ultra Low Penetration Air filter). As described above, the photocatalytic sterilizer 10 is equipped with an air filter 40, so that fine dust filtration of indoor air is also performed. Of course, in the present invention, the air filter 40 may be replaced with an antibacterial filter or an activated carbon filter or used together with them.

9 to 15 , the high-function photocatalytic sterilization module 20 is provided with a sterilization duct 210 that provides a blowing passage and a photocatalytic reaction chamber. The sterilization duct 210 is connected to the front plate 211 and the rear plate 212 and the front plate 211 and the rear plate 212 parallel to each other at regular intervals and is trapezoidal by the inclined plate 213 inclined at a predetermined angle. A photocatalyst coating to be described later on all inner surfaces of the photocatalytic sterilization chamber 214 having a cross-section and including a photocatalytic sterilization chamber 214 closed inside by these front and rear plates 211 and 212 and swash plate 213 The composition is coated, and the air inlet 214a is formed in the lower part of the photocatalytic sterilization chamber 214 . Accordingly, the intake air introduced through the blower inlet 214a is discharged upward through the photocatalytic sterilization chamber 214 .

Preferably, all inner surfaces of the sterilization duct 210 are coated with a photocatalyst coating composition having excellent decomposition performance of harmful gases and excellent surface durability in order to increase the photocatalytic reaction area. The sterilization duct 210 is made of a corrosion-resistant stainless steel plate in this embodiment, but is not limited to such a metal material.

For internal cleaning and management of the sterilization duct 210, an opening 211a for duct management is formed on the front plate 211 of the sterilization duct 210 as shown in FIG. The plate base 232 is installed detachably. A photocatalyst front scattering plate 230 may be mounted on the inner surface of the photocatalyst front scattering plate base 232 as shown in FIG. 15 .

One or more photocatalyst channel holders 280 are installed on the inner wall of the sterilization duct 210 . As shown in FIG. 10 , the photocatalyst channel holder 280 is provided with channel fastening grooves 280a facing each other. The photocatalyst channel holder 280 may be installed with a holder support leg 282 as shown in FIG. 16 .

A photocatalyst channel 300 that is detachably fitted to the photocatalyst channel holder 280 is provided. The photocatalytic channel 300 has a tunnel-type photocatalytic reaction chamber 302 and catalyst expansion wings 304 radially formed on the inner surface of the photocatalytic reaction chamber 302, and a photocatalytic coating composition to be described later is coated on the inner and outer surfaces. has The photocatalyst coating composition will be described later.

An ultraviolet lamp 310 is disposed inside the photocatalytic channel 300 . The ultraviolet lamp 310 causes a photocatalytic reaction by irradiating ultraviolet rays to the photocatalytic coating composition, and at the same time generates a sterilizing power in the airflow passing through the photocatalyst channel 300 .

On the other hand, as shown in FIGS. 12 and 16 , the LED strip installation rod 241, the LED strip installation rod 241 having a circular cross section over a certain length on the outside of the photocatalytic channel 300 and coated with titanium dioxide (TiO ₂ ) One or more LED ultraviolet emitters 240 disposed in a photocatalyst sterilization chamber 214 may be further installed, which are circularly disposed on the outer circumferential surface of the LED strip 242 to generate LED ultraviolet rays.

In addition, as shown in FIGS. 15 and 16 , the slopes 213 and the front plate 211 of the sterilization duct 210 are bent to form ridges 220a and 230a each having an angle of 60 degrees each having a certain width and continuously A photocatalyst inclined scattering plate 220 and a photocatalyst front scattering plate 230 are installed respectively to form a wrinkle shape and are coated with a photocatalyst coating composition to induce scattering and diffusion of ultraviolet rays. The mountain shape 220a of 220 is disposed in a direction perpendicular to the mountain shape 230a of the photocatalytic front scattering plate 230 and the longitudinal direction of the mountain shape 230a of the photocatalytic front scattering plate 230 minimizes the resistance of air flow. It can be arranged to coincide with the blowing direction (X) in order to do so.

Here, the photocatalyst coating composition includes 10 to 30 parts by weight of an ultraviolet curable acrylic resin, 1 to 10 parts by weight of a silane coupling agent, and 0.1 to 5 parts by weight of a photoinitiator, based on 100 parts by weight of the photocatalyst sol, a titanium precursor, an acid catalyst , 100 parts by weight of a titanium dioxide photocatalyst prepared by mixing an alcoholic solvent and distilled water, 10 to 30 parts by weight of molybdenum disulfide nanowire, and 1 to 10 parts by weight of cerium aluminide, lupeol and an alkalizing agent.

The photocatalyst sol is prepared by stirring and heating 100 parts by weight of a titanium precursor, 18 to 25 parts by weight of an acid catalyst, 25 to 35 parts by weight of an alcoholic solvent, and 250 to 350 parts by weight of distilled water to prepare a titanium dioxide photocatalyst; And 100 parts by weight of titanium dioxide photocatalyst, 10 to 30 parts by weight of molybdenum disulfide nanowire, and 1 to 10 parts by weight of cerium aluminide, mixed with an alcoholic dispersion solvent containing lupeol and an alkalizing agent, the solid content is 5 to 30% by weight and adjusting the pH to be 4.0 to 7.0; may be prepared including.

In addition, molybdenum disulfide nanowires are supersaturated by sonication and stirring of a precursor solution of molybdenum disulfide at 70 to 90 ° C. for 30 minutes to 2 hours, followed by cooling to precipitate a powdery molybdenum disulfide intermediate material. step; and heat-treating the intermediate material; The cerium aluminide is at least one powder selected from sodium hydride (NaH) and lithium hydride (LiH), cerium chloride (CeCl ₃ ) powder and aluminum chloride (AlCl ₃ ) powder and 5 to 20: 1: 1 to 5 molar ratio mixing to form a mixed powder; generating a composite powder containing cerium aluminide by putting the mixed powder together with a ball into a reaction vessel, filling argon, helium or nitrogen gas, and then performing ball milling; And after dispersing the resulting composite powder in distilled water, it may be prepared by a method comprising the step of recovering the cerium aluminide powder by filtration.

<Production Example 1>

Preparation of photocatalytic sol

TiCl ₄ and Ti(OCH ₂ CH ₃ ) ₄ 100 parts by weight of a titanium precursor mixed in a 2: 1 weight ratio, 22 parts by weight of a nitric acid catalyst, 30 parts by weight of ethanol and 280 parts by weight of distilled water were stirred at a temperature of 100° C. for 14 hours. and heating to prepare a titanium dioxide photocatalyst having a crystalline phase of an anatase type and a solid content of 17% by weight.

100 parts by weight of the titanium dioxide photocatalyst prepared above, 13 parts by weight of molybdenum disulfide nanowire and 5 parts by weight of cerium aluminide, lupeol and an alkalizing agent (diisopropylethylamine and sodium hydroxide are mixed in a 1: 0.2 weight ratio) was mixed with ethanol to have a solid content of 19 wt%, and the pH was adjusted to 6.5 to prepare a photocatalyst sol (Sol).

At this time, the molybdenum disulfide nanowire (NH ₄ ) ₂ MoS ₄ precursor solution of molybdenum disulfide in which 0.2 g of the precursor is mixed with 50 ml of a tertiary polar or non-polar solvent is ultrasonicated at 80 ° C. for 1 hour and stirred (sonication) and stirring ( stirring) to supersaturate, and then cooled to precipitate an intermediate molybdenum disulfide in powder form; After performing the first heat treatment at 500 °C while injecting the intermediate material with Ar, H ₂ , and H ₂ S at 100, 7, and 5 sccm, respectively; Ar and H ₂ S was injected at 100 and 8 sccm, respectively, and was formed by a manufacturing method including performing secondary heat treatment at 1200 ° C., and an average length of 42 nm was used.

In addition, the cerium aluminide is obtained by mixing lithium hydride (LiH) powder with cerium chloride (CeCl ₃ ) powder and aluminum chloride (AlCl ₃ ) powder in a molar ratio of 18: 1: 3 to form a mixed powder; The mixed powder was charged together with 17 9.5 mm diameter balls made of chrome steel in a 125 ml container made of tool steel in a weight ratio of about 1:28, and then filled with argon (Ar) in the container, A composite powder containing cerium aluminide was produced by performing high energy ball milling for 4 hours using a mill. after; The resulting composite powder was dispersed in distilled water to remove salt by-products such as sodium chloride, and then filtered to recover cerium aluminide (CeAl ₄ ) powder having an average particle diameter of about 345 nm.

In addition, the lupeol is dried and then pulverized lupine seeds and pods of lupine seeds to obtain a lupine seed powder and pod powder of lupine seeds; And 95% or more of ethanol as an extraction solvent to the lupine seed powder and the pod powder of the lupine seed was added in a weight ratio of 1: 7 and heated to 65° C. to extract the lupeol. What was extracted was used. At this time, the lupeol was mixed to be contained in an amount of 7 parts by weight in 100 parts by weight of ethanol.

<Comparative Preparation Example 1>

Preparation of comparative photocatalytic sol

Ti(OCH ₂ CH ₃ ) ₄ 100 parts by weight of a titanium precursor, 15 parts by weight of a nitric acid catalyst, 30 parts by weight of ethanol, and 280 parts by weight of distilled water were stirred and heated at a temperature of 90° C. for 11 hours, so that the crystal phase was anatase type and the solid content was 12 A weight % titanium dioxide photocatalyst was prepared.

100 parts by weight of the titanium dioxide photocatalyst prepared above was mixed with ethanol containing an alkalizing agent (sodium hydroxide), the solid content was 9% by weight, and the pH was adjusted to 6.5, thereby preparing a photocatalyst sol (Sol).

<Example 1>

Preparation of photocatalyst coating composition for sterilization device using LED lamp ultraviolet rays

Based on 100 parts by weight of the photocatalytic sol prepared in Preparation Example 1; 20 parts by weight of UV-curable acrylic resin; 3 parts by weight of a silane coupling agent obtained by mixing vinyltrichlorosilane and 3-(2-aminoethylaminopropyl)dimethoxymethylsilane in a 1: 1 weight ratio; And 0.8 parts by weight of a photoinitiator (2-hydroxy 2-methyl-1-phenylpropan-1-one) was mixed to prepare a photocatalyst coating composition for a sterilizer using LED lamp ultraviolet rays.

In this case, the ultraviolet curable acrylic resin is isobornyl (meth)acrylate 19% by weight, tetrahydrofurfuryl acrylate 26% by weight, tripropylene glycol diacrylate 31% by weight, 1,6-hexanediol diacrylate 9% by weight % and 15 wt% of pentaerythritol triacrylate was used.

<Comparative Example 1>

Preparation of Comparative Coating Compositions

With respect to 100 parts by weight of the photocatalytic sol prepared in Comparative Preparation Example 1; 20 parts by weight of UV-curable acrylic resin; 3 parts by weight of 3-(2-aminoethylaminopropyl)dimethoxymethylsilane; And 0.8 parts by weight of a photoinitiator (2-hydroxy 2-methyl-1-phenylpropan-1-one) was mixed to prepare a photocatalyst coating composition for a sterilizer using LED lamp ultraviolet rays.

In this case, the UV-curable acrylic resin was used containing 65 wt% of isobornyl (meth)acrylate and 35 wt% of tripropylene glycol diacrylate.

<Test Example>

4, the photocatalytic coating composition for a sterilizer using the LED lamp ultraviolet light prepared in Example 1 and the comparative coating composition prepared in Comparative Example 1 are sprayed on a scattering plate made of stainless steel with a curved surface as shown in FIG. By coating, irradiating UV (300 to 2,000 mJ) and curing, a scattering plate having a photocatalyst coating composition coated on the surface was prepared.

Harmful gas decomposition performance

The harmful gas decomposition performance was evaluated for the scattering plates each coated with the photocatalyst coating composition for a sterilization device using the LED lamp ultraviolet light prepared in Example 1 and the comparative coating composition prepared in Comparative Example 1. The results are shown in Table 1 below.

The evaluation was measured by a small chamber test method (ISO 18560-1:2014), the injection gas concentration was 0.1 ppm, and the light source used was an LED lamp emitting ultraviolet rays of 200 to 400 nm wavelength.

Coating surface durability evaluation

For the scattering plates each coated with the photocatalyst coating composition for a sterilization device using the LED lamp ultraviolet light prepared in Example 1 and the comparative coating composition prepared in Comparative Example 1, a cellophane tape having a width of 5 cm and a length of 15 cm was adhered to the surface. Then, the mass of the composition to be peeled off was measured. At this time, when the mass of the peeled composition is 3% by weight or less relative to the mass of the initially coated composition, it is good, and when it exceeds 3% by weight, it is insufficient, and the results are shown in Table 1 below.

Degree of decomposition of harmful gases surface durability Example 1 99% Good Comparative Example 1 77% Inadequate

As can be seen in Table 1, when the photocatalyst coating composition for a sterilizer using the LED lamp ultraviolet light prepared in Example 1 was coated, compared with the case in which the comparative coating composition prepared in Comparative Example 1 was coated, It was confirmed that it had an exceptionally excellent decomposition performance of harmful gases and surface durability. Unexplained code '217' is a 'blower mounting part'. On the other hand, in order to increase the efficiency of sterilization and decomposition by recirculation of a part of the photocatalyst product, a photocatalyst recirculation outlet 215 is further formed on the upper portion of the sterilization duct 210 as shown in FIG. 7 , and the housing 12 and the sterilization duct 210 . Between the photocatalyst recirculation outlet 215 and the blower inlet 301 of the blower 30, a photocatalyst recirculation passage 13 communicating with the photocatalyst recirculation passage 13 may be provided.

The operation of the photocatalytic sterilizer configured in this way will be described.

First, when the operation button 129 disposed on the front upper part of the housing 12 is turned on, the blower 30 is driven to start blowing, and at the same time, the photocatalyst channel 300 is irradiated with ultraviolet light from the ultraviolet lamp 310 . A photocatalytic reaction takes place inside the At this time, when the blowing force is generated through the blowing inlet 214a, the blowing flow is generated inside the sterilization duct 210. At this time, external air (contaminants, bacteria, viruses, etc.) is sucked through the blower inlet 214a.

In addition, the ultraviolet rays generated from the LED strip 242 of the LED ultraviolet emitter 240 are radiated and collide with the inner surface of the sterilization duct 210, so that electrons are formed from the coated titanium dioxide to generate strong oxidizing power, and hydroxyl radicals (-OH) and superoxide (-O2) are formed. In this process, more radicals (OH-) are generated due to the increase in the area of the photochemical reaction by the titanium dioxide coated on the inner surface of the sterilization duct 210, the photocatalyst inclined scattering plate 220 and the photocatalyst front scattering plate 230. . Therefore, oxidation, decomposition, and death of organic compounds such as pollutants, bacteria and viruses included in the outdoor air introduced into the sterilization duct 210 are promoted by the increased sterilization power.

Therefore, dust contained in the outside air through the air intake port 122a of the housing cover 122 is primarily filtered through the air filter 40, and then, organic substances such as bacteria and viruses are decomposed and killed by oxidative power. Accordingly, the air from which dust is removed and organic substances such as viruses are decomposed and purified is discharged through the first air outlet 123a and the second air outlet 122b.

In this process, more radicals (OH-) are generated due to the increase in the area of the photochemical reaction by the titanium dioxide coated on the inner surface of the sterilization duct 210, the photocatalyst inclined scattering plate 220 and the photocatalyst front scattering plate 230. .

In addition, since the volume of the LED ultraviolet emitter 240 is small, the blower 30 reduces the blown obstruction, and the emission efficiency of radicals (OH-) is increased, so that the sterilization power is increased.

In addition, the present invention is a method using an LED-type photocatalyst, and the replacement cycle of the LED strip 242 is longer, and thus has the advantage of being several times longer than that of the conventional screw-type or filter-type photocatalyst.

In addition, there is an effect of maximizing the sterilization effect of air containing various bacteria and viruses such as COVID-19 by using the ultraviolet light of the LED lamp having a wavelength of 200 to 400 nm, which is a wavelength band with strong bacterial sterilization power.

In addition, the photocatalyst coating composition in the present invention has an effect that can be easily coated with excellent adhesion. Accordingly, even when the member to be coated has a curved surface, the photocatalytic coating composition of the present invention can be easily coated with excellent adhesion, further maximizing the efficiency of the photocatalytic reaction, and has excellent decomposition performance of harmful gases and surface durability.

So far, the present invention has been described in detail with reference to the presented embodiment, but those skilled in the art can make various modifications and variations of the invention without departing from the technical spirit of the present invention with reference to the presented embodiment. will be. The present invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

1000: fine dust removal device
1100: water tank body
1200: first fine dust removal unit
1300: second fine dust removal unit
1400: third fine dust removal unit
2000: High-function photocatalytic sterilizer
12: housing
121: housing body
122: housing lower cover
123: housing top cover
20: high-function photocatalyst sterilization module
210: sterilization duct
220: photocatalyst inclined scattering plate
230: photocatalyst front scattering plate
240: LED ultraviolet emitter
280: photocatalyst channel holder
300: photocatalyst channel
30: blower
3000: oxygen generator

Claims (16)

delete a fine dust removal device 1000 for removing fine dust, carbon dioxide, nitrogen oxides, and bacteria in the air by reacting with lime water;
a high-function photocatalytic sterilization device 2000 for killing and purifying bacteria remaining in the purified air discharged from the fine dust removal device 1000 by UV photocatalytic reaction;
Including;
The fine dust removal device 1000 accommodates lime water therein, an outlet 1121 is provided at the lower end, an exhaust duct 1141 is provided at the upper end, and an outdoor air inlet pipe 1241 to introduce outdoor air into the inside. The installed water tank body (1100); A first fine dust removal unit provided in the water tank body 1100 and allowing the outside air flowing into the water tank body 1100 to react with the lime water accommodated in the water tank body 1100 to remove the fine dust contained in the outside air (1200); The first fine dust removal unit ( 1200), a second fine dust removal unit 1300 that removes fine dust caused by bubbles by generating bubbles to prevent settling in the water tank body 1100 while removing fine dust contained in the outside air that has not been removed; It is provided in the water tank body 1100, and an ultrasonic diaphragm 1421 is installed to generate ultrasonic vibration, and the first and second fine dust removal units 1200 and 1300 by the ultrasonic vibration generated from the ultrasonic diaphragm 1421. a third fine dust removal unit 1400 that removes fine dust contained in outdoor air that is not removed by ultrasonic vibration; and a controller 1500 installed to control the inflow of air from the ultrasonic diaphragm 1421 of the third fine dust removal unit 1400 and the second fine dust removal unit 1300;
The high-function photocatalytic sterilizer 2000 includes a housing body 121 having a sterilization module storage chamber 121a, and is installed openly and openably on the lower portion of the housing body 121, and the exhaust duct is provided at one location of the housing body 121. A housing lower cover 122 having an air inlet 122a communicating with the 1141, and a housing upper cover 123 installed to be openable and openable on the upper portion of the housing body 121 and having a first air outlet 123a. a housing 12 made of; It has a trapezoidal cross-section by the front plate 211 and the rear plate 212 and the front plate 211 and the rear plate 212 which are parallel to each other at a regular interval and inclined at a predetermined angle by the inclined plate 213, and these front surfaces A photocatalytic coating composition is coated on all inner surfaces of the photocatalyst sterilization chamber 214, including the photocatalyst sterilization chamber 214 closed inside by the plate 211, the rear plate 212, and the inclined plate 213, and the photocatalytic sterilization a sterilization duct 210 having a blower inlet 214a formed as a lower portion of the seal 214; at least one photocatalyst channel holder 280 disposed on the inner wall of the sterilization duct 210; It is detachably fitted to the photocatalyst channel holder 280 and has a photocatalyst reaction chamber 302 of a tunnel type and catalyst expansion wings 304 radially formed on the inner surface of the photocatalytic reaction chamber 302, and photocatalysts on the inner and outer surfaces a photocatalytic channel 300 coated with a coating composition; An ultraviolet lamp 310 disposed inside the photocatalytic channel 300 and irradiating ultraviolet rays with a photocatalytic coating composition to cause a photocatalytic reaction; a reaction between ultraviolet rays and a photocatalytic material occurs to kill organic materials such as bacteria and viruses A high-function photocatalyst sterilization module 20 and; a blower (30) for generating blowing force to suck in outside air from the air intake and injecting it into the sterilization duct (210); and an air filter (40) installed on the side of the air inlet to remove fine dust and contaminants in the air. 3. The method of claim 2,
The first fine dust removal unit 1200 is
It is disposed inside the water tank body 1100 and is provided to partition an upper region and a lower region, a through hole 1231 is formed so that the upper region and the lower region are in contact, and when outside air is introduced into the lower region, a large amount of air bubbles are generated an internal partition plate 1221 dividing the inside of the water tank body 1100 up and down so that fine dust and carbon dioxide are primarily removed as generated and the exhaust gas moves to the upper region through the through hole 1231; It is provided inside the water tank body 1100 so that fine dust and carbon dioxide are primarily removed in the process of aeration while a large amount of air bubbles are generated in the lower region divided up and down by the inner partition plate 1221, and a large amount of an outdoor air inlet pipe 1241 for introducing outdoor air and guiding it to be ejected from the lower region; It is formed so that only the lower part is opened so that only the lower part is opened to collect the exhaust gas rising after the outdoor air ejected to the lower area through the outdoor air inlet pipe 1241 is primarily dusted by lime water, and is provided in the upper area in the water tank body 1100, , an inner housing 1261 from which fine dust and carbon dioxide are secondaryly removed by generating bubbles in the process of collecting the exhaust gas; And installed to be in contact with the inner housing 1261, the upper part is formed to be in contact with the inner housing 1261 and the lower part is opened to exhaust the exhaust gas collected in the inner housing, and creates bubbles in the process of being exhausted to tertiarily Including; an internal exhaust pipe 1281 from which fine dust and carbon dioxide are removed;
The second fine dust removal unit 1300 is
an air supply pipe 1321 installed in the form of a double pipe inside the outdoor air inlet pipe 1241 to supply air to the lower region in the water tank body 1100 in a pulsating manner; And in contact with the lower end of the air supply pipe 1321 and installed to be positioned in a horizontal state in the lower region of the water tank body 1100, the air supplied through the air supply pipe 1321 is discharged through the outer periphery of the water tank body The air cleaning system comprising: a bubble generating plate (1331) having a circular plate shape so as to form bubbles in the lower region in (1100) to cause agitation. 4. The method of claim 3,
The lower end of the outdoor air inlet pipe (1241) includes a diffusion outlet (1251) formed in the shape of a funnel, the diameter of which becomes wider toward the bottom so that the incoming outdoor air is diffused and discharged. 4. The method of claim 3,
The lower end of the inner housing 1261 includes an exhaust gas guide 1271 having an inclined surface of an outwardly widening shape and guiding the rising exhaust gas after being primarily vibration-removed in the lower region; and the exhaust gas The exhaust gas that rises after being installed so that the lower end opening of the internal exhaust pipe 1281 is disposed at a predetermined distance adjacent to the upper side of the guide part 1271 is primarily removed from the lower region to the exhaust gas guide part 1271 The air cleaning system, characterized in that it is blocked so that it does not flow into the lower opening of the internal exhaust pipe (1281). 4. The method of claim 3,
The bubble generating plate 1331 includes an upper plate member 1341 installed to be in contact with the air supply pipe 1321; and a lower plate member 1361 installed at a predetermined interval on the lower portion of the upper plate member, wherein air is discharged to the outer periphery through between the upper plate member 1341 and the lower plate member 1361 Air cleaning system, characterized in that the bubble is formed in the lower area within the water tank body (1100). 7. The method of claim 6,
It is installed between the upper plate member 1341 and the lower plate member 1361 and guides the air discharged through the space between the upper plate member 1341 and the lower plate member 1361 so that bubbles can be stably formed. The upper plate member 1341 and the lower plate member 1361, the vane guide member 1381 to form a radially installed on any one surface corresponding to each other; further comprising, the lower plate member 1361 is the water tank body It is fixedly installed at the bottom of the lower region partitioned by 1100, and an upper plate 1341 is installed to form a predetermined distance above the lower plate member 1361, and an air supply pipe (1341) is provided to the upper plate member 1341. 1321), an air cleaning system, characterized in that the lower end is installed to be in contact. a fine dust removal device 1000 for removing fine dust, carbon dioxide, nitrogen oxides, and bacteria in the air by reacting with lime water;
a high-function photocatalytic sterilization device 2000 for killing and purifying bacteria remaining in the purified air discharged from the fine dust removal device 1000 by UV photocatalytic reaction;
Including;
A high-function photocatalytic sterilizer (2000)
A housing main body 121 having a sterilization module storage chamber 121a, and a housing lower cover installed in a lower portion of the housing main body 121 so as to be able to open and close and having an air intake port 122a in one place of the housing main body 121 ( a housing 12 comprising: 122) and a housing upper cover 123 that is openly and openably installed on the upper portion of the housing body 121 and has a first air outlet 123a;
A high-function photocatalytic sterilization module 20 having a sterilization duct 210 that causes a reaction between LED ultraviolet rays and a photocatalytic material to kill organic substances such as bacteria and viruses, and is inserted into the housing 12 and fixedly installed;
a blower (30) for generating blowing force to suck in outside air from the air intake and injecting it into the sterilization duct (210);
The air filter 40 is installed on the side of the air intake to remove fine dust and contaminants in the air; including,
The high-function photocatalyst sterilization module 20 is
It has a trapezoidal cross-section by the front plate 211 and the rear plate 212 and the front plate 211 and the rear plate 212 which are parallel to each other at a regular interval and inclined at a predetermined angle by the inclined plate 213, and these front surfaces A photocatalytic coating composition is coated on all inner surfaces of the photocatalyst sterilization chamber 214, including the photocatalyst sterilization chamber 214 closed inside by the plate 211, the rear plate 212, and the inclined plate 213, and the photocatalytic sterilization a sterilization duct 210 having a blower inlet 214a formed as a lower portion of the seal 214; at least one photocatalyst channel holder 280 disposed on the inner wall of the sterilization duct 210; It is detachably fitted to the photocatalyst channel holder 280 and has a photocatalyst reaction chamber 302 of a tunnel type and catalyst expansion wings 304 radially formed on the inner surface of the photocatalytic reaction chamber 302, and photocatalysts on the inner and outer surfaces a photocatalytic channel 300 coated with a coating composition; and an ultraviolet lamp (310) disposed inside the photocatalyst channel (300) and irradiating ultraviolet light with a photocatalytic coating composition to cause a photocatalytic reaction. 9. The method of claim 8,
The housing body 121 has a predetermined radius of curvature R on both sides of the housing body 121 to form a circular column shape, and an air filter holder 124 for mounting the air filter 40 on the inner surface of the housing lower cover 122 . ) is further installed, and an air filter replacement opening 125 for replacing the air filter 40 is formed on one side of the air filter holder 124 . 9. The method of claim 8,
LED strip installation rod 241 having a circular cross section over a certain length on the outside of the photocatalyst channel 300 and coated with titanium dioxide (TiO ₂ ) on the outer circumferential surface of the LED strip installation rod 241, LED ultraviolet rays Air cleaning system, characterized in that one or more LED ultraviolet emitters (240) are further installed in the photocatalytic sterilization room (214) consisting of an LED strip (242) for generating a light. 9. The method of claim 8,
For internal cleaning and management of the sterilization duct 210, an opening 211a for duct management is formed on the front plate 211 of the sterilization duct 210, and a photocatalyst front scattering plate 230 in the opening 211a for duct management. The air cleaning system, characterized in that the mounted photocatalyst front scattering plate base 232 is detachably installed. 9. The method of claim 8,
On both sides of the inclined plates 213 and the front plate 211 of the sterilization duct 210, the ridges 220a and 230a each having an angle of 60 degrees by bending the steel plate have a certain width and are continuously connected to form a wrinkled photocatalyst coating composition A photocatalyst inclined scattering plate 220 and a photocatalyst front scattering plate 230 that are coated to induce scattering and diffusion of ultraviolet rays are installed, respectively, for photocatalyst scattering and diffusion. is disposed in a direction perpendicular to the ridge 230a of the photocatalyst front scattering plate 230 and the longitudinal direction of the ridge 230a of the photocatalyst front scattering plate 230 in the blowing direction (X) and Air cleaning system, characterized in that arranged to match. 9. The method of claim 8,
In order to increase the sterilization and decomposition efficiency by partially recirculating the photocatalyst product, a photocatalyst recirculation outlet 215 is further formed on the upper portion of the sterilization duct 210, and between the housing 12 and the sterilization duct 210, photocatalyst recirculation An air cleaning system, characterized in that the photocatalyst recirculation passage (13) communicating with the exhaust port (215) and the air intake port (301) of the blower (30) is provided. 9. The method of claim 8,
The photocatalyst coating composition includes 10 to 30 parts by weight of an ultraviolet curable acrylic resin, 1 to 10 parts by weight of a silane coupling agent, and 0.1 to 5 parts by weight of a photoinitiator, based on 100 parts by weight of the photocatalyst sol, a titanium precursor, an acid catalyst, alcohol 100 parts by weight of a titanium dioxide photocatalyst prepared by mixing a solvent and distilled water, 10 to 30 parts by weight of molybdenum disulfide nanowire, and 1 to 10 parts by weight of cerium aluminide, lupeol and an alkalizing agent by mixing in an alcoholic dispersion solvent Air cleaning system, characterized in that manufactured. 15. The method of claim 14,
The photocatalytic sol is
preparing a titanium dioxide photocatalyst by stirring and heating 100 parts by weight of a titanium precursor, 18 to 25 parts by weight of an acid catalyst, 25 to 35 parts by weight of an alcoholic solvent, and 250 to 350 parts by weight of distilled water; and
100 parts by weight of a titanium dioxide photocatalyst, 10 to 30 parts by weight of molybdenum disulfide nanowires, and 1 to 10 parts by weight of cerium aluminide, mixed with an alcoholic dispersion solvent containing lupeol and an alkalizing agent, the solid content is 5 to 30% by weight , adjusting the pH to be 4.0 to 7.0; Air cleaning system, characterized in that it was manufactured including. 15. The method of claim 14,
The molybdenum disulfide nanowire is
The precursor solution of molybdenum disulfide is supersaturated by sonication and stirring at 70 to 90° C. for 30 minutes to 2 hours, followed by cooling to precipitate an intermediate molybdenum disulfide in powder form; and heat-treating the intermediate material;
The cerium aluminide is
At least one powder selected from sodium hydride (NaH) and lithium hydride (LiH) is mixed with cerium chloride (CeCl ₃ ) powder and aluminum chloride (AlCl ₃ ) powder in a molar ratio of 5 to 20: 1: 1 to 5 and mixed powder forming a; generating a composite powder containing cerium aluminide by putting the mixed powder together with a ball into a reaction vessel, filling argon, helium or nitrogen gas, and then performing ball milling; and dispersing the resulting composite powder in distilled water and then filtering to recover the cerium aluminide powder.

Images