KR100570099B1 - Photocatalytic air purifier comprising photocatalytic washer - Google Patents

Abstract

In the present invention, in the construction of an air purifier using a photocatalytic reaction window, the air purifier is configured to include a cleaning device capable of periodically cleaning the photocatalytic reaction device to increase the air purification efficiency and maintain the air cleaning ability, and more Furthermore, the present invention relates to an air cleaner including a photocatalyst washing apparatus having a structure in which an air cleaning capability is improved by air washing with a water filter in parallel with the photocatalyst reaction apparatus.

Photocatalyst, Photocatalyst Plate Cleaning, Filter Cleaning, Water Filter

Description

Air purifier with photocatalytic cleaner {PHOTOCATALYTIC AIR PURIFIER COMPRISING PHOTOCATALYTIC WASHER}             

1 is a block diagram showing the configuration of the present invention

2 is an embodiment of a photocatalytic reaction device according to the present invention

3 is an exemplary view of a photocatalyst plate

4 is an embodiment of a washing device

5 is a block diagram of the present invention showing a configuration including a water filter

6 is a structural diagram of a water filter

* Description of the major symbols

10 Photocatalytic Reactor 11.Photocatalyst Plate 12.Space

13.hole 14.UV lamp 20.washing device

21.Tank 22.Sprinkler 23.Sedimentation tank

24.Water bottle 30.Water filter 31.Sprinkler

The present invention relates to an air purifier using a photocatalytic reaction window, and more particularly, to include a cleaning device capable of periodically cleaning the photocatalytic reaction device, thereby improving air purification efficiency and continuously maintaining a purification ability, and further, photocatalytic reaction. In parallel with the apparatus, the present invention relates to an air purifier including a photocatalyst washing apparatus capable of separating and removing harmful elements such as fine dust by air washing with a water filter.

Clean air, uniform temperature and adequate humidity are the main determinants of the quality of the indoor environment, but due to industrialization and urbanization, indoor or enclosed spaces contain various types of hazardous substances, many of whom are exposed to these harmful substances. Spending time in a state is threatening health.

For example, infectious microorganisms (such as Staphylococcus aureus, Legionella, Mycobacterium tuberculosis, Afghans, Influenza, Polio, Foot-and-mouth disease, etc.) and organic contaminants (combustion compounds, phenol compounds, environmental hormones, etc.) that are transmitted through the air ), Air pollutants (such as automobile exhaust gas, nitrogen oxides emitted from incinerators, sulfur oxides, dioxins, etc.) and harmful odorous gases (formaldehyde, acetaldehyde, casein, toluene, styrene, etc.) These are the causes of various diseases, such as accumulating or directly affecting the human body, weakening immunity, causing chronic bronchitis, pulmonary impairment, etc., causing various infectious diseases, and directly threatening life. .

Various methods have been attempted to improve indoor air quality from such harmful environment, and air cleaning using photocatalyst has become one method.

The air cleaning method using the photocatalyst is a powerful sterilization and oxidation reaction of titanium dioxide (TiO2), which is mainly used as a photocatalyst, and is oxidized and reduced in the molecule when UV light of 380 nm or less is applied to the nanometer-sized titanium dioxide (TiO2) crystal. Reactions and hydrophilic reactions are carried out at the same time, and on the surface of the photocatalyst, it has the same effect as incineration at an absolute temperature of 30,000˚K. Oxidize and decompose harmful substances generated in buildings such as aldehyde, hydrogen sulfide, odor gas such as ammonia, air pollutants such as sulfur oxides (SOx) and nitrogen oxides (NOx), and other organic chlorine compounds such as trichloroethylene, Phenolic Compounds, Polyvinyl Chloride (PCB), Environmental Hormones (Bisphenol, Nonylphenol, Estradiol), Dioxin Acetaldehyde, Cassirin, Toluene, styrene sulfide, methyl Meru Kaftan, and decomposition emulsion oxide methyl, trimethylamine, iso-valeric acid, ammonia, bacteria, decomposed with a strong sterilizing power even for bacteria, such as microorganisms and oxidised to CO ₂ and H ₂ O, the toxicity It has a strong air purification effect to remove even the substance.

The air purifier using the strong sterilization and oxidation of the photocatalyst, the photocatalytic action is performed on the surface of the photocatalyst coated on the substrate, so the larger the contact surface with air, the greater the treatment capacity, and the band-gab energy of titanium dioxide (Eg). By appropriately irradiating light energy corresponding to), processing capacity is improved.

In addition, since the sterilization and oxidation reaction by the photocatalyst is performed by the contact on the photocatalyst surface, the clean state of the photocatalyst surface is a factor that determines the air purification efficiency, and since the photocatalyst has super hydrophilicity by absorption of ultraviolet rays, In contact with the water, a water film is formed on the surface of the photocatalyst to perform a self-cleaning action to remove foreign substances. On the other hand, the water film prevents contact between the photocatalyst and air (pollutant) to reduce the purification efficiency.

At this time, the water generated during the oxidation of the pollutant is extremely minute, and at the same time as the reaction evaporates in the form of water vapor cannot be used for self-cleaning.

Theoretically, catalysts have a characteristic of permanent life because they do not change even if they cause chemical reactions, but in reality, the catalyst surface, which is the place of chemical reactions, is contaminated, and the activity as a catalyst is deteriorated. The state must be accompanied by a program.

For example, if ions belonging to alkalis such as calcium (Ca) and magnesium (Mg) tend to be adsorbed and deposited on the surface and contaminated by adhesion of organic matter on the surface of the photocatalyst, decomposition of the photocatalytic reaction is not concerned. In case of contamination by inorganic material, it remains on the surface because it is not decomposed by the photocatalytic reaction.

The air purification by photocatalyst can achieve efficient purification effect by fully reflecting the characteristics of such photocatalyst, but various types of products proposed in the past do not fully reflect the characteristics of such photocatalyst, and as a result, the air cleaning ability itself There was a limiting problem.

In particular, nitrogen oxides (NOx) and sulfur oxides (SOx) are converted to low concentrations of nitric acid or sulfuric acid during oxidation, remaining on the surface of the photocatalyst to form a membrane, thereby degrading the photocatalytic action, so it is necessary to periodically clean the surface to remove the membrane. There is. Conventional photocatalyst air purifier solves this problem by removing the photocatalyst filter from the body and washing it with water about once a year, but it is contaminated within a short time depending on the hassle of desorption and the environment by the consumer. In practice, it is difficult to expect a continuous catalytic effect.

Republic of Korea Patent Publication 2003-0048989 of the air purifier using a photocatalyst has a structure of a photocatalyst filter in the form of wrapping an ultraviolet lamp in the center and wrapping it around the air, and composed of several types of filters and electrostatic precipitator together to pass the air through the electrostatic precipitator By passing through a photocatalyst filter and an antibacterial and carbon filter to achieve an air cleaning effect. In this structure, the photocatalyst filter, the electrostatic precipitator, and other filters are configured to work together so that the photocatalyst performs an auxiliary function, but the substrate of the photocatalyst constituting the photocatalyst filter assembly is composed of a filter to absorb ultraviolet rays. There is a limit that cannot induce photocatalytic reaction on the front surface due to blind spots, and in order to remove the debris attached to the surface of the photocatalyst filter during the oxidation reaction, it is necessary to periodically replace or clean the filter. Since management is difficult at the user level, the maintenance cost must be increased by relying on periodic external management.

Korean Patent Publication No. 2004-0014028 has a structure in which a photocatalyst stacking tube and a photocatalyst stacking fan are rotated and a plurality of ultraviolet lamps are disposed around them, thereby stacking photocatalysts on various types of substrates, thereby increasing the contact surface between the photocatalyst and air. Power consumption is increased by using an ultraviolet lamp, and there is a problem in that the photocatalyst laminate needs to be cleaned periodically to remove debris attached to the surface of the photocatalyst filter during the oxidation reaction.

Korean Patent Registration No. 10-0235088 mounts titanium oxide-treated glass beads on a titanium oxide-treated filter, installs each glass dictation and filter so that a portion is deposited in the tank, and irradiates the water with ultraviolet rays. The air is brought into contact with the glass beads, the filter and the water. The structure has been described as purifying the air by contacting the air and water to wash the air, and having the ability to deodorize and self-clean water in the tank by the action of the photocatalyst, but the photocatalyst in contact with the water as described above is superhydrophilic Due to the property of forming a water film on the surface to limit the oxidation reaction of pollutants, the self-cleaning ability of the photocatalytic oxidation is rather limited. Rather, the water in the tank is purified and contaminated by ultraviolet light irradiated by an ultraviolet lamp. The fact that this was suppressed was justifiable, and the effect of the photocatalyst was hardly expected.

In the present invention, in the construction of an air purifier, the photocatalyst filter can be easily cleaned without having to remove the photocatalyst filter or photocatalyst plate, and can be washed at any time so that no contaminants are accumulated or hardened on the surface at all times. It is intended to induce sterilization and oxidation reactions.

In addition, the present invention improves the efficiency of the photocatalyst by improving the structure of the photocatalyst reaction device consisting of a photocatalyst plate and UV lamp, the water filter as well as the photocatalyst reaction device is configured with the photocatalytic reaction device to remove and remove various harmful substances and air It is intended to present a new air purifier equipped with a humidity control ability to wash the.

To this end, the present invention sterilizes harmful substances contained in the air by photocatalytic decomposition of a photocatalytic reaction device. An air purifier for purifying air by oxidizing is provided, and an air purifier configured to include a photocatalyst washing apparatus having a structure in which water is sprayed onto the photocatalyst surface of the photocatalytic reactor to wash the photocatalyst surface.

The photocatalytic reactor is a structure in which a plurality of photocatalyst plates formed by coating nano-sized titanium dioxide on the surface of a substrate and UV lamps irradiating light energy corresponding to band-gab energy (Eg) of titanium dioxide to the photocatalyst plates are combined. Has

The photocatalyst plates are installed to be in parallel with the flow paths so that contact is made in the process of passing air through the flow paths, and the photocatalyst plates are provided at regular intervals. In addition, each photocatalyst plate has a structure in which a hole is formed in the center of each photocatalyst plate so that ultraviolet rays by the ultraviolet lamp are absorbed without blinding, and the UV lamp penetrates the hole.

In addition, in order to increase the contact surface of the photocatalyst plate and improve the irradiation angle of the UV lamp to further improve the purification efficiency of the air, each photocatalyst plate also presents a structure that is formed so that the wrinkles radially from the hole in the center.

The cleaning device utilizes the superhydrophilicity and self-cleaning ability of the photocatalyst to push foreign substances on the surface of the photocatalyst by applying ultraviolet light while spraying water on the surface of the photocatalyst to push out foreign substances on the surface. In order to wash the foreign matter or various inorganic substances attached to the surface during the reaction process to maintain the air cleaning performance in the optimal state at all times.

To this end, the washing apparatus includes a tank configured to hold a constant amount of water, a water sprayer pumping water from the tank, sprayed on the upper portion of the photocatalyst plate at an appropriate water pressure, and sedimented step by step to receive the sprinkled water. It consists of a sedimentation tank for reducing to a tank, and a water supply tank for discharging sediment to the outside and supplying deficiency water.

The sedimentation tank provides the function of recycling the surface water to the tank by sedimenting the foreign substances contained in the washing step by step, and the water supply tank separates the sediment and discharges it to the outside. It supplements water to maintain proper quantity.

The cleaning device is configured to operate for a suitable time automatically or manually after finishing the process of decomposing and removing contaminants by the operation of the photocatalyst.

Since the water used for washing contains a large amount of sediment, the sedimentation tank setstles the washing water stepwise to separate reusable water and sediment. Install sterile lamp.

The present invention provides an air purifier to include a water filter structure that acts together or independently of the photocatalytic action to effectively filter out suspended solids in the air and improve the air quality by having freshness and proper humidity in the purified air. Configure.

The water filter supplies water pumped from the tank to a sprayer installed on the flow path and sprays the air through the flow path to filter out various suspended substances contained in the air and contaminants not processed by the photocatalytic reaction device. It is designed to act as a filter and to be operated simultaneously or independently with the photocatalytic reaction device.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is for illustrating the basic configuration of the present invention, the present invention is to contact the photocatalytic reaction device 10 by the air sucked on the flow path by the elements such as suction fan contained in the air by the photooxidation decomposition reaction In the air purifier using the photocatalyst, which purifies the sucked air by sterilizing and oxidizing and extinguishing the material, the purified air is sprayed with water on the surface of the photocatalyst which is a component of the photocatalytic reaction device. It will be shown that the photocatalyst cleaning device 20 configured to clean the surface is included.

The photocatalytic reaction device 10 includes a photocatalyst plate 11 having a structure coated with titanium dioxide on a metal plate, a plastic plate, a honeycomb, or a filter-type substrate, and a UV light configured to apply ultraviolet rays to force photoacidification reactions on the surface of the photocatalyst. It consists of a lamp 14.

The present invention is characterized in that it comprises a cleaning device for cleaning the surface of the photocatalyst without regard to the structure of the photocatalytic reaction device, that is, the form of the photocatalyst plate or the arrangement of the UV lamp, etc. In consideration of the treatment efficiency, the form of the photocatalyst plate and the arrangement structure of the UV lamp can be configured in various ways.

FIG. 2 shows an embodiment of the photocatalytic reactor 10 of the most useful form to be presented by the present invention, in which a rectangular metal plate is coated with nano-sized titanium dioxide to form each photocatalyst plate 11, Each photocatalyst plate has a structure in which four corners are joined together with the space 12 so that each photocatalyst plate maintains a distance in a range of 1-5 cm so that the contact is made in the process of air passing through the flow path.

Each photocatalyst plate is formed with a hole 13 in the center of each photocatalyst plate so that the ultraviolet light by the ultraviolet lamp is absorbed without blinding, and through the UV lamp 14 through the hole, effective ultraviolet irradiation can be performed without blinding. To configure.

In addition, it is preferable that the purified air is discharged from various directions of the air cleaner so that the air is diffused into the room, and the present invention provides a photocatalyst plate on the same flow path in the vertical and horizontal groups. The configuration was carried out by dividing into two.

In the structure of the photocatalytic reaction device according to the above-described structure, each photocatalyst plate is a plate structure, and the contact time is longer than that of the conventional filter-type catalyst plate in the process of passing the flow path through which the sucked air passes, and the contact surface is significantly increased Therefore, the photocatalytic reaction is promoted and has a longer lasting characteristic, and the noise is small because the sucked air flows naturally through the flow path.

In addition, air is brought into contact with the photocatalyst plates uniformly arranged at regular intervals on the flow path, and ultraviolet rays are irradiated from the UV lamps penetrating the center of the photocatalyst plates, so that a small number of UV lamps allow efficient irradiation. Since the irradiation amount can be secured, it is possible to exhibit a high efficiency of air cleaning ability with low power.

3 is a structure in which a wrinkle is formed radially around a central hole through which a UV lamp penetrates as another embodiment of the photocatalyst plate, and the radial wrinkle is enlarged toward the light source to effectively absorb ultraviolet rays, and has a surface area. By this increase, the reaction effect by the photocatalyst is further improved.

The photocatalytic reaction device absorbs the ultraviolet rays irradiated from the UV lamp on the surface of the photocatalyst and incinerates the photocatalytic surface at an absolute temperature of 30,000˚K, thereby inducing organic volatiles such as acetaldehyde, kacillin, toluene, and styrene. Compounds (VOCs), radon gas, formaldehyde, toxic substances in buildings, hydrogen sulfide, odor gases such as ammonia, and air pollutants such as sulfur oxides (SOX) and nitrogen oxides (NOX). Infectious microorganisms, such as Legionella and tuberculosis bacteria, toxic fungi such as Appergills, viruses such as influenzae, polio and foot-and-mouth disease, are also decomposed into CO ₂ and H ₂ O by powerful sterilization. By removing the toxic substances, various harmful substances contained in indoor air are purified and purified.

The washing apparatus 20 is applied by the ultra-hydrophilicity and self-cleaning ability of the photocatalyst which pushes the foreign matter adhered to the surface by applying the ultraviolet light while the water is brought into contact with the photocatalyst and having a small contact angle to spread the foreign matter attached to the surface. It will use the cleaning effect.

The washing apparatus may be configured in a variety of ways to apply water to the photocatalyst plate, Figure 4 is installed on the photocatalyst plate sprinkler 22 to pump water from the tank 21, spraying the supplied water, washing water The washing apparatus having a structure of recirculating the filter by the settling tank 23 is illustrated.

The washing apparatus 20 receives a tank 21 capable of holding a certain amount of water, a watering machine 22 pumping water from the tank, and a sprinkler 22 sprayed on top of the photocatalyst plate and the water sown. The sedimentation and overflow water consists of a sedimentation tank 23 for reducing the tank to a tank and a water supply tank 24 for discharging the sediment to the outside and supplying the insufficient water. The process of decomposing and removing contaminants by the operation of the photocatalyst is completed. It is configured to work for several minutes in tens of seconds then automatically or manually.

In the tank, a submersible pump is installed so that water with a proper pressure can be sprayed through the nozzle of the sprinkler.

The sedimentation tank provides the function of recycling sediment contained in the wash water step by step to reduce the surface water to the tank so that it can be recycled, and the water tank can separate sediment separately and discharge it to the outside, and disappears during the washing process. This function is to replenish the used water to maintain the proper quantity.

To this end, the sedimentation tank is composed of one or more and installed in the lower part of the photocatalytic reaction device, the water supply tank is installed in the lower part of the sedimentation tank, and the tank is installed in the lower part of the water supply tank to separate clean water and sediment through the multi-step sedimentation process. If it accumulates to some extent, it is discharged to the outside, and the supernatant is configured to be introduced into the tank so that it can be recycled.

Another function of the sedimentation tank and water tank is to maintain the constant air cleaning capability by simply and easily operating the users to supplement water and discharge the sediment, thus maintaining the filter for replacement or cleaning required in the existing air cleaner. Has the function to reduce the administrative cost.

The cleaning device according to the above configuration is irradiated with ultraviolet rays by the UV lamp when spraying the washing water onto the surface of the photocatalyst through the sprayer so that foreign matters can be separated and removed by the superhydrophilic reaction on the surface of the photocatalyst, and at the same time with the appropriate pressure By washing the surface of the catalyst, foreign substances such as inorganic materials that are not oxidatively decomposed are washed out to maintain the surface of the photocatalyst as the initial state so that the air cleaning performance can be maintained at the optimal state at all times.

In addition, in the conventional air cleaner, the photocatalyst was periodically decomposed and cleaned by the consumer, but the present invention is automatically cleaned without having to decompose and wash the photocatalyst plate, and contaminants that are difficult to be decomposed by the photocatalytic reaction suddenly become catalyst plates. Even if it is attached to the surface, it can be immediately washed, so it can always be kept in a state of waiting for the photocatalytic reaction in the best state, and the user can use it safely without worrying about the cleaning time or contamination of the photocatalyst plate.

On the other hand, in the water tank constituting the washing device to filter organic matter and sediment, and to install bacteria on the circulation path to prevent bacteria or microorganisms propagation in the water used as the washing water, water sterilization lamp in the tank do.

The sterilizing lamp uses a double tube lamp sealed with high-purity quartz glass on the outside so that it can be lit in water. The sterilizing lamp is a sterilizing line of 253.7 nm ultraviolet sterilizing wave, which is bacteria, viruses, and fungi in the air. It acts on the back and destroys DNA in the cell to remove the proliferative capacity, oxidizes and kills the protein, so that the water used in the cleaner is sterilized to the level of drinking water.

The present invention can be implemented in a structure that combines a water filter to further improve the air quality based on the above-described configuration.

5 shows a structure in which a water filter is additionally coupled to the photocatalytic reactor, and the water filter 30 supplies the pumped water from the tank to the sprinkler 31 installed on the flow path and sprinkles the air through the flow path. As a filter for filtering various suspended substances contained in the air and contaminants which are not processed by the photocatalytic reaction device, it is configured to operate simultaneously or independently with the photocatalytic reaction device.

The water filter forms a water film by superhydrophilic reaction of the photocatalyst plate when the sprinkled water contacts the photocatalyst plate, and the water filter blocks the contact between the photocatalyst and contaminants, so that the water filter is installed so as not to contact the photocatalyst plate.

6 shows an example in which the water filter 30 is installed in the center and both sides of the photocatalyst plate, but the number and positions of the water filters are not limited. Alternatively, by being configured to be selectively operated, it is possible to obtain an overlapping air cleaning effect by the photocatalytic reaction device and the water filter, and the water filter may be very useful for controlling humidity of the room.

The water provided by the above water filter adsorbs and deposits very fine dust, harmful chemicals, harmful gases, bacteria, and odors that the existing fibrous filter structure cannot catch due to the adsorption and dissolving power, and cleans the polluted air cleanly and freshly. give.

This effect is that when forced air is brought into contact with the water surface, harmful substances in the air are adsorbed by adsorption, dissolution, diffusion, surface tension, etc., which are physical properties of the water. It becomes heavy and precipitates naturally, and the precipitated material is made by the principle of being continuously trapped in water because it cannot break out of its high surface tension by itself, and the precipitated material is separated from the water by the settling tank constituting the washing device. Finally, it is discharged to the outside through the water tank, so that clean and fresh air can be discharged as if the sky becomes clear after the rain.

In addition, the water provided on the flow path used as a water filter is humidified in contact with the inhaled air, and the vaporization humidification is controlled according to the relative humidity of the room to maintain the proper humidity even when using an air conditioner or a heater. Be sure to

Humidification by water filter is natural evaporation and humidification method that is not humid and does not accompany bacteria unlike general humidifier, and it protects the mucous membrane of skin and respiratory tract and maintains the body's active ability. Humidity environment can be formed naturally throughout the room.

According to the present invention, the present invention provides various types of air cleaners including photocatalyst as an element of an air cleaner, for example, an air cleaner using a filter and a photocatalyst, an air cleaner, a photocatalyst, a filter, and a charging method. By combining with an air cleaner or oxygen generator including an anion element, the air quality can be improved in a variety of overlapping ways.

In addition, the present invention can be applied as an element of a large capacity air conditioner as well as an air cleaner composed of a single system, and can be applied to an air cleaning system of a large building.

According to the above-described configuration, the present invention is automatically washed without disassembling and washing the photocatalyst plate, and even if a contaminant that is difficult to be decomposed by the photocatalytic reaction is suddenly attached to the surface of the catalyst plate, the photocatalytic reaction is always possible in the best state. It can be maintained in the air waiting state, improving the air cleaning efficiency and maintaining the clean ability, and the hassle caused by consumers periodically disassemble and clean the photocatalyst in the existing air cleaner, replace the filter, and use the additive medicine. And it can solve the inefficiency and economical, and the user can use with confidence without worrying about the cleaning time or contamination of the photocatalyst plate.                     

In addition, the photocatalyst plate proposed by the present invention can significantly increase the contact time and the contact surface with air passing through the flow path, and the irradiation amount is increased due to the irradiation of ultraviolet rays at a close distance, thereby exhibiting a high-efficiency air cleaning ability with low power. It becomes possible.

In addition, the present invention is characterized by the adsorption, dissolution, diffusion, surface tension of the contaminants, odors, ultra-fine dust and bacteria or viruses that have not been processed by the photocatalytic reaction device due to the configuration of the water filter By separating and removing this by the complex action such as precipitation, sterilization of water sterilization lamp, and photocatalytic reaction, clean and fresh air can be produced, and indoor air quality is further improved by controlling indoor air to natural humidity by vaporization and humidification. It has an effect that can be improved.

Claims (5)

In an air purifier using a photocatalyst which purifies air by oxidizing and extinguishing harmful substances contained in the air by a photocatalytic decomposition reaction of a photocatalytic reaction device installed on a flow path, the photocatalytic reaction device is formed by coating titanium dioxide on a surface of a substrate. A plurality of photocatalyst plates and UV lamps for irradiating light energy corresponding to band-gab energy of titanium dioxide are coupled to the photocatalyst plates, and photocatalysts are sprayed with water by spraying water on the surface of the photocatalyst plates. An air cleaner comprising a photocatalytic cleaning device, characterized in that it comprises a photocatalyst cleaning device configured to clean the surface. The washing apparatus according to claim 1, wherein the washing apparatus includes a tank configured to hold water of a constant capacity, a water sprayer pumping water from the tank and spraying water on the surface of the photocatalyst, and depositing the water sprayed step by step, and the overflowed water tank At least one sedimentation tank for reducing the water, and a water supply tank for discharging the sediment to the outside and supplying the deficiency water, the photocatalytic reaction device can be washed by adding water to the photocatalytic reaction device after the photocatalytic reaction. Air cleaner with photocatalytic cleaner. According to claim 1, The photocatalyst plate is a structure coated with nano-sized titanium dioxide on the surface of the rectangular metal plate substrate is arranged in parallel with the flow path so as to maintain a predetermined interval, respectively, the through-hole is formed in the center portion, UV in the through hole Air cleaner including a photocatalyst cleaning device, characterized in that the lamp is made of a structure installed. The air cleaner of claim 3, wherein the photocatalyst plates have a structure in which the photocatalyst plates are divided into a vertical group and a horizontal group in parallel with the flow channel so as to maintain a predetermined interval. The water filter according to any one of claims 1, 2, 3, and 4, wherein a water filter configured to spray water on the flow path in parallel with the photocatalytic reactor to wash the inhaled air is added to the water filter. Air cleaner containing a photocatalyst cleaning device.

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