KR20070111757A - Air cleaner and air purifier - Google Patents

Abstract

An air purifier is provided to collect dust contained in air that is sucked into the air purifier, prevent ozone from being generated, improve the removal efficiency by removing carbon monoxide as well as reaction intermediates and reaction byproducts, construct the air purifier in a simple structure, and reduce the installation cost. An air purifier contains a coarse particle removing filter material(or filter)(101) and a fine particle removing filter material(or filter)(102) for filtering particulate dust or bacteria contained in air that is sucked into the air purifier by a blower(108); a coil type photocatalytic reactor(103) made from a plastic, glass or quartz material to induce sufficient retention time and reaction time into the indoor air transferred by the blower; a pipe(104) to which a diffuser is attached to guide the indoor air that has been treated in the coil type photocatalytic reactor such that micro-bubbles are formed through the diffuser; a water tank(105) having a water supply port and a water drain port for removing residual various dusts discharged from the diffuser-attached pipe and contaminants which have hydrophilicity by the photocatalytic reactor; an overflow preventing baffle(110) having a drainage; an activated carbon charging pipe(106) having a microporous medium for completely eliminating reaction intermediates and final products; a chamber(107) for relaxing treated indoor air while preventing the treated indoor air from being exhausted to the outside of the air purifier; and a disinfecting unit for irradiating ultraviolet rays onto inner and lower parts of the water tank to sterilize the water tank.

Description

Air Cleaner {Air Cleaner and Air Purifier}

1 is a block diagram showing the principle of air purification of the air purifier according to an embodiment of the present invention.

2 is a perspective view showing an air cleaner according to an embodiment of the present invention.

Figure 3 is a perspective view showing a photocatalyst reaction tank according to an embodiment of the present invention.

** Description of the main symbols in the drawings **

12: cooling fan 13: coiled quartz tube (includes titanium oxide on inner surface)

14: UV lamp 15: Beaded coiled quartz tube (includes titanium oxide on inner surface)

101: filter medium for removing coarse particles 102: filter medium for removing fine particles

103: coil type photocatalytic reactor 104: tube with diffuser

105: tank 106: activated carbon filling tube

107: Chamber 108: Blower

109: water exchange, water purification and disinfection device 110: baffle

The present invention relates to an air cleaner, and more particularly, to collect and remove dust contained in inhaled air as well as to remove harmful gases, the reaction product of the harmful gases in the indoor air through a photocatalytic reaction and a hydrophilic action. It relates to an air purifier, characterized in that for processing.

Recently, with the deterioration of the atmospheric environment and increasing interest in indoor air quality that affects health, the purchase of air cleaners to purify indoor air has increased rapidly, and the market size has continuously increased to about 3,000 as of 2004. It is estimated to be one billion market. In addition, the Sick House Syndrome (SHS) has a socially significant response, and a law has been enacted to inform consumers of the emissions of various harmful gases from new building construction materials.

In general, an air purifier is a purifier that cleans air by treating dust, bacteria, odors, and harmful gases in the air, and is a filtration method that removes particulate contaminants such as dust or bacteria contained in indoor air. (Or a filter method) based on a photocatalyst method, a sterilizing ultraviolet lamp method, a plasma (Plasma) method, or a method of mixing an anion generator (Korea Patent Publication No. 1999-0070053, Patent No. 10-0499335) , Published Patent Application Publication No. 2003-0084208, Published Utility Model 20-0182872. Through such a mixing method, a method of separating and treating contaminants contained in indoor air is often adopted.

However, according to the Korea Consumer Protection Agency's announcement on November 4, 2004 (www.cpb.or.kr), we tested the ability to remove suspended dust in the indoor air. Appeared to fall. In addition, it has been pointed out that carbon monoxide (CO), which causes symptoms of poisoning, has not been removed from all products, and deodorization efficiency and noise are different between products, so it is necessary to be careful in selecting it. In addition, ozone (O ₃ ) is generated when high voltage is used for dust collection, deodorization and sterilization among the above air cleaners (especially anion generator). Inhalation has been shown to adversely affect the function of mucosal tissue, lung cells, respiratory system.

In addition, in the conventional air purification method, the photocatalyst method and the plasma method show a very excellent effect when purifying contaminated indoor air, but induce sufficient reaction in the reaction tank to show a complete oxidation reaction or treatment effect. must do it. This was well illustrated by the November 4, 2004, Korea Consumer Protection Agency (www.cpb.or.kr) announcement, which removes 80% of the initial injection concentrations of formaldehyde (HCHO) and toluene (C ₇ H ₈ ). It took longer than 30 minutes. Theoretical oxidation reaction decomposes organic matter into carbon dioxide and water, but it is almost impossible to realize this because of the reaction vessel which increases proportionally according to the reaction time of 30 minutes or more as shown in the results of the experiment of the Korea Consumer Protection Agency.

In addition, the conventional air purification methods do not completely decompose organic pollutants into carbon dioxide and water, and may generate intermediates or by-products due to a short reaction time. It can accumulate indoors as reaction intermediates and products inside the enclosed space, and the accumulated reaction intermediates can have harmful effects on the human body. Existing air purification methods do not disclose the contents of such reaction intermediates. For example, suppose it is an enclosed space. In this case, when the air purifier using the conventional oxidation process oxidizes benzene, a temporary large amount of oxygen (O ₂ ) is consumed, which may cause a temporary oxygen shortage. When benzene is oxidized at this time, quinones or semi-quinons are produced temporarily as reaction intermediates, and the intermediates are prolonged exposure to these reaction by-products because they are highly reactive organic radicals. If so, it is very likely to cause health problems such as headaches. However, conventional air cleaner schemes do not address these problems at all.

Accordingly, the present invention is invented to solve the above problems, and not only collects dust contained in the inhaled air, there is no ozone generation, and the photocatalytic reaction and the hydrophilic action are generated in the oxidation reaction of harmful gases. The aim of the present invention is to provide an air cleaner that removes intermediates and inadequate reaction by-products to purify indoor air, and also removes carbon monoxide to improve removal efficiency, simplify the structure, and reduce installation costs.

In order to achieve the above object, the present invention provides a coarse particle removal filter (or filter) 101 for filtering particulate dust or bacteria present while indoor air is sucked into the air cleaner by the blower 108 at the rear end. And a filter medium (or filter) 102 for removing fine particles.

In addition, by inducing sufficient residence time and reaction time to the indoor air conveyed by the blower 108, the treatment efficiency by the oxidation reaction is increased, and at the same time, the generation of reaction intermediates or reaction by-products is minimized and the required area occupied by the device is minimized. To provide an air cleaning method comprising a coil type photocatalytic reactor (103) of plastic, glass or quartz material

In addition, the present invention provides an air cleaning method including a tube 104 having an diffuser attached to guide the indoor air treated by the coil-type photocatalytic reactor 103 to pass through the diffuser 104 to form microbubbles. .

In addition, the amount of water to remove the contaminants converted to hydrophilic by the photocatalytic reaction tank 103 while removing various residual dust discharged from the pipe 104 attached to the diffuser while the pipe attached to the diffuser is submerged in the water It provides an air cleaning method characterized by a water tank 105 having a water supply port and a drain port so that the scale is displayed.

Further, an overflow prevention baffle 110 having a drain hole induced to be discharged to the outside while inducing the water not to exceed a predetermined predetermined level temporarily in the water tank 105 is further included. It provides an air cleaning method provided.

In addition, as the indoor air passing through the overflow preventing baffle 110 passes through the photocatalytic reaction tank 103 and the water tank 105, the activated carbon having a fine porous medium for containing the reaction intermediate and the final product at all times and completely removing it Provided is an air cleaning method comprising a filling tube (106).

In addition, a chamber 107 is provided to relax the treated indoor air while preventing the discharge of the processed indoor air immediately to the outside of the air cleaner.

In addition, there is provided an air cleaning method and an air cleaner, which is characterized by comprising a disinfection device 109 that periodically sterilizes the inside or outside of the tank by ultraviolet light.

In order to achieve the above object, the air purifier of the present invention respectively forms an inlet and an exhaust port in front and rear of a sealed space to allow room air to pass through, and divides the inlet and the exhaust port into a plurality of partitions, and Each type of coarse particle removal filter medium (or filter), fine particle removal filter medium (or filter), a blower for transporting indoor air, a coil-type photocatalyst reactor that induces an oxidation reaction to decompose contaminants as needed in the partition, Tubes with acid pipes to increase the solubility using microbubbles, water baths soaking acid devices in water to easily process contaminants produced by oxidation reactions, and baffles to prevent water overflow (baffle), activated carbon filling tube which finally adsorbs various processed gases, chamber for relaxing treated indoor air, It is achieved by placing the selected combinations of these, and the like to clean the air supply clean air into the room.

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

1 is a block diagram showing an air purifying principle of an air cleaner according to an embodiment of the present invention, Figure 2 is a perspective view showing an air cleaner according to an embodiment of the present invention, Figure 3 is a view of the present invention A perspective view of a photocatalyst reactor according to one embodiment.

As shown in Figs. 1 and 2, the indoor air is sucked into the air cleaner by the blower 108 at the rear end, and the coarse particle removal filter medium (or filter) 101 and the fine particle removal filter medium (or The filter 102 removes particulate dust and bacteria by sieving. At this time, as the corrugated flexible pipe (a kind of bellows type) that can freely adjust the suction direction of the indoor air suction, a device capable of arbitrarily adjusting the exhaust direction and distance is more preferable. In addition, the structure sucked into the air cleaner by the blower 108 is preferably made of various partitions and sealed.

Coil-type photocatalytic reactor 103 according to the present invention is produced in a coil type (coil type) to induce a sufficient reaction time to increase the treatment efficiency by the oxidation reaction and minimize the production of reaction intermediates or reaction by-products. In addition, the coil-type photocatalytic reactor 103 serves to convert harmful nonpolar organic contaminants introduced into the air cleaner into hydrophilic polar substances. The reaction principle is to form holes (hole ⁺ h ⁺ ) and electrons (electron, e ⁻ ) by irradiating ultraviolet energy (usually wavelength of 400 nm or less) to the photocatalyst as shown in Schemes 1 to 5 below (Scheme 1), Holes formed on the surface decompose water (or hydroxide ions, OH ⁻ ) present in the environment to form a small amount of radical radicals (OH ·) (Reaction Scheme 2 and Reaction Scheme 3 below). It is oxidized (Scheme 4). It also directly oxidizes contaminants present in the environment due to holes (Scheme 5).

Scheme 1: Ti0 ₂ + UV → h ^{+ +} e ^-

Scheme 2: H ₂ O + h ⁺ → OH. + H ⁺

Scheme ^{3: OH - + h + →} OH and

Scheme 4: OH. + Contaminants → reaction products (CO ₂ , H ₂ O, etc.)

Scheme 5: h ⁺ + contaminants → reaction products

As shown in FIG. 3 to induce the above reaction, the coil-type photocatalytic reactor 103 is oxidized simultaneously while the ultraviolet lamp 14 and titanium oxide attached to the inner surface of the coil-type quartz tube 13 are irradiated with ultraviolet rays. Coil-type quartz tube (15) containing glass beads with titanium is attached, the cooling fan 12 for dissipating heat generated inside the reactor to the outside to maintain a constant temperature. At this time, in the coil type photocatalytic reactor 103, titanium oxide (TiO _2, etc.) is attached to the inner surface of the tube made of a coiled quartz material of which the support is supported, and the glass beads with titanium oxide are attached to the coiled quartz tube 13. It is fluidly present inside, and these titanium oxides are very firmly attached and can be used for a long time.

A tube 104 with an diffuser is connected between the coiled photocatalytic reactor 103 and the water tank 105 containing water, with the coiled photocatalyst at the bottom of the tube 104 or in the middle of the tube 104. It is connected to the tubular tube and the diffuser pipe for injecting the indoor air discharged through the reactor (103). The diffuser, which is a connected porous medium, acts to increase the efficiency of removing dust and organic contaminants in the air by the water in the water tank 105 through the indoor air treated through the photocatalytic reaction tank. In addition, the introduced indoor air may be further provided with a dispersion plate which is processed by a photocatalytic reaction tank and then converted into water-soluble indoor air to form more fine bubbles to increase the contact efficiency of water. In addition, activated carbon, also known as charcoal, may be preferably used as the porous medium.

Next, the water tank 105 containing the water passes through the diffuser 104 and passes through the water, forming bubbles, in which dirt and contaminants converted to water soluble are removed. The tank can be seen on the scale displayed through the glass window, and the water volume can be adjusted through the water inlet and the drain. Further, a periodic water exchange device, water purification and sterilization device 109 by ultraviolet rays or the like may be provided inside or outside the water tank.

Next, the indoor air passing through the water tank 105 is sequentially passed through the baffle 110 and the activated carbon filling tube 106. Hazardous gases contained in the indoor air are first processed through the coil-type photocatalytic reaction tank 103 and sequentially passed through the water tank 105 and the activated carbon filling tube 106, and the activated carbon filling tube 106 used at this time is U A shape or W shape is preferable. As described above, since the indoor air passes through the photocatalytic reactor and the tank prior to passing through the activated carbon packed tube and always contains the reaction intermediate and the final product, the interior air is finally formed by the fine porous medium of the activated carbon existing in the activated carbon packed tube 106. Will be processed.

Next, the indoor air passing through the activated carbon filling tube 106 has a kind of relaxation period in which no special chemical reaction occurs until it is discharged to the outside of the air purifier. The chamber 107 is prevented from leaking out of the air cleaner immediately.

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

As described in detail above, the present invention provides an air cleaning device for removing dust and harmful gases in the indoor air. By using the air cleaning device of the present invention, the indoor polluted air is cleaned to improve the indoor environment, and in particular, the carbon monoxide and nitrogen oxides are treated in an indoor environment, and the non-polar and volatilized properties such as benzene and toluene are not included. It can effectively remove harmful gases.

Claims (7)

Coarse particle removal filter medium (or filter) 101 and fine particle removal filter medium (or filter) for filtering particulate dust or bacteria present while indoor air is sucked into the air cleaner by the blower 108 in the rear stage. 102; By inducing sufficient residence time and reaction time to the indoor air conveyed by the blower 108, the processing efficiency by the oxidation reaction is increased, and at the same time, it minimizes the generation of reaction intermediates or by-products and minimizes the required area occupied by the device. A coil type photocatalytic reactor 103 made of glass or quartz; A tube (104) having an diffuser attached to guide the indoor air treated by the coil-type photocatalytic reactor (103) to pass through the diffuser (104) to form microbubbles; The water content scale for removing contaminants converted to hydrophilicity by the photocatalytic reactor 103 while removing various residual dust discharged from the pipe 104 with the diffuser while the diffuser is attached to the pipe is submerged in water. A water tank 105 having a water supply port and a drain port to be displayed; An overflow prevention baffle 110 having a drain hole for inducing the water above the set water level to be discharged to the outside while inducing the water tank 105 temporarily not to exceed a predetermined predetermined water level; Filled tube 106 of activated carbon having a fine porous medium to completely contain the reaction intermediate and the final product as the room air passing through the overflow prevention baffle passes through the photocatalytic reactor and the water tank; A chamber 107 for relaxing the treated indoor air while preventing the discharge of the processed indoor air straight out of the air cleaner; In addition, the air cleaning method and the air cleaner which is characterized by comprising a disinfection device (109) for periodically sterilizing the inside or outside of the tank by ultraviolet light. The method of claim 1, wherein the coil-type photocatalytic reactor 103 is a UV lamp 14 for inducing the action of converting harmful non-polar organic contaminants into a hydrophilic polar material, and discharges heat generated inside the reaction vessel to the outside Titanium oxide (TiO _2, etc.) is firmly attached to the cooling fan 12 that maintains the temperature and the coiled quartz tube 13 having titanium oxide attached therein, and can move up and down in the flow of air. An air cleaner comprising a bead-shaped photocatalyst carrier or support made of plastic, glass, or quartz. The coil type photocatalyst reactor (103) according to claim 1, wherein titanium oxide (TiO _2, etc.) is attached to the inner surface of the tube of a coiled quartz material having a support, and titanium oxide is attached to the coiled photocatalyst reactor (103). An air purifier that is fluidly present inside a quartz tube, and these titanium oxides are very firmly attached and operate for a long time (more than 3 months). The tube 104 with the diffuser attached is connected between the coiled photocatalytic reactor 103 and the water bath 105 containing water, wherein the bottom or tube 104 of the tube 104 is connected. Dust and organic matter in the air caused by the water in the water tank 105 is connected to the tube-type tube and the diffuser injecting the indoor air discharged through the coil-type photocatalytic reactor 103 in the middle of the water tank 105 Air cleaner that works to increase the efficiency of removing pollutants. The air cleaner of claim 1, wherein the introduced indoor air is further processed by a photocatalytic reaction tank and then converted into a water-soluble indoor air to further form a bubble to increase contact efficiency of water. The method of claim 1, wherein the indoor air passing through the water tank 105 passes through the activated carbon filling tube 106 in sequence, the harmful gas contained in the indoor air first passes through the coil-type photocatalytic reaction tank 103 and sequentially It is processed by passing through the water tank 105 and the activated carbon filling tube 106, the activated carbon filling tube 106 used in this case has a U-shaped or W-shaped, as described above, the indoor air is a photocatalyst prior to passing through the activated carbon packed tube The air purifier finally processed by the fine porous medium of the activated carbon existing in the activated carbon filling tube 106 because the reaction intermediate and the final product is always contained while passing through the reaction tank and the water tank. The method of claim 1, wherein the indoor air passing through the activated carbon filling tube 106 relaxes the treated indoor air while having a kind of relaxation period in which no special chemical reaction occurs until it is discharged outside the air purifier. Air cleaner to pass through the chamber (Chamber) 107.

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