KR200302397Y1 - Optical catalyst reactor and air purification system - Google Patents

Abstract

A photocatalytic reactor and a harmful air purifier using the same are disclosed. The photocatalytic reactor has a first hollow and a photocatalyst tube coated with a photocatalyst material on its inner wall, and is installed in the first hollow of the photocatalyst tube, and has a second hollow through which an ultraviolet lamp can pass and be supported. The plate-shaped wing is disposed along the outer circumference parallel to the second hollow spaced apart by a predetermined interval, wherein the plate-shaped wing has at least one or more pivot guide plate is installed to cross at a predetermined angle with respect to the extending direction of the second hollow. According to the photocatalyst reactor and the harmful air purifier using the same, the structure for increasing the contact time and the contact area of the air in the reactor with the photocatalyst tube is simple, and the rotational direction of the inlet air in the reactor is alternately caused by interference. By converting, the air that is not reacted with the photocatalyst tube is reduced, so that the reaction efficiency of purifying harmful air is improved. In addition, it is possible to remove particulate contaminants in addition to gaseous contaminants, and thus there is an advantage in that the purification ability is extended.

Description

Photocatalyst reactor and harmful air purifier using the same {Optical catalyst reactor and air purification system}

The present invention relates to a photocatalytic reactor and a noxious air purifier using the same, and more particularly, a photocatalytic reactor and a noxious air purifier using the same to increase the purification time by increasing the contact time and the contact area of the purifying air with the reactor. It is about.

Recently, the air pollution according to the industrial development is getting serious, especially the problem of various respiratory diseases of workers who are exposed to the harmful gas generated in the industrial field has emerged seriously.

In general, the odor component is a substance that irritates the sense of smell to give a sense of discomfort as well as harmful effects on health. In addition, volatile organic compounds have a high vapor pressure and are easily evaporated into the atmosphere and cause photochemical reactions with nitrogen oxides in the atmosphere to cause photochemical smog, which destroys the ozone layer in the atmosphere and is known to be very harmful to the human body. In particular, some volatile organic compounds may be present in high concentrations even in the absence of specific combustion-related pollutants in indoor environments where many people are constantly exposed, and the importance of their removal is emphasized in terms of environmental health.

Current treatment techniques for volatile organic compounds include thermal incineration, adsorption, and catalyst incineration.

Thermal incineration is uneconomical in case of large load fluctuations, low concentrations and low flow rates, and has the disadvantage of generating nitrogen oxides and dioxins. Adsorption method reduces the adsorption capacity of the adsorbent when ketone, aldehyde, ester is included and there is a problem that the adsorption efficiency decreases due to dust contamination. On the other hand, catalytic incineration is difficult to apply to the process that is uneconomical due to excessive initial investment cost, high operating cost, etc. to be applied to the removal of relatively low flow rate of the medium / low temperature volatile organic compounds, and also has a risk of explosion.

Moreover, these techniques are not suitable for use in workplaces or indoors where facilities are large and relatively low in concentrations of hazardous gases.

On the other hand, indoor air purifiers have been commercially used in various ways to purify the air polluted indoors to provide a comfortable indoor or closed space environment.

The indoor air purifier adopts a method alone or in combination with a filtration method by a filter, an electrostatic precipitating method, an activated carbon adsorption method and the like. By the way, the indoor air purification method is effective in the removal of particulate contaminants, but has the disadvantage that it is not effective in the removal of volatile organic compounds or odors, such as the gaseous pollutants described above.

In recent years, a method of purifying gaseous contaminants has been used to purify the air introduced by radiating ultraviolet rays to the photocatalytic material. Korean Utility Model Registration No. 254611 discloses a water and air purifier using a spiral photocatalyst plate employing a skew-like photocatalyst plate continuously formed in a spiral shape to increase the contact time between air and the photocatalyst plate. However, the application of the photocatalyst plate in the form of a spiral screw flows continuously through the flow path formed by the spiral screw without changing the flow, so that the air flows between the center portion and the peripheral portion in the direction crossing the air traveling direction. There is a big disadvantage in the variation in the reactivity of the air purifying. That is, the central portion of the air has a disadvantage that the purification rate is lowered because the contact frequency with the photocatalyst plate is relatively less than the peripheral portion.

In addition, there is a disadvantage that a large capacity blower must be applied in order to increase the flow rate of air because the interference force to the progress of the air is strong due to the spiral screw formed continuously.

The present invention was devised to improve the above problems, and an object thereof is to provide a photocatalytic reactor in which a simple structure and air can react evenly with a reactor.

In addition, another object of the present invention is to provide an air purifier that can increase the purification efficiency of the air.

1 is a cross-sectional view schematically showing a harmful air purifier according to a preferred embodiment of the present invention,

FIG. 2 is a partially enlarged perspective view of a photocatalytic reactor applied to the harmful air purifier of FIG. 1;

3 is a partial excerpt cross-sectional view showing another embodiment of the photocatalyst tube of FIG.

Figure 4 is a perspective view showing a swing guide plate installed in the photocatalytic reactor of Figure 2,

Figure 5 is a partial excerpt side view showing only one wing to explain the direction of the blade with respect to the swing guide plate of Figure 4,

6 is a side view showing another embodiment of the turning guide plate.

In order to achieve the above object, the photocatalytic reactor according to the present invention includes a photocatalyst tube having a first hollow and coated with a photocatalyst material on an inner wall thereof; It is installed in the first hollow of the photocatalyst tube, has a second hollow through which the ultraviolet lamp can be penetrated, and a plurality of plate-shaped wings on the outer side are arranged at predetermined intervals along the outer circumferential surface parallel to the second hollow. And at least one or more pivot guide plates installed so that the extension surface of the plate-shaped blades intersects at a predetermined angle with respect to the extending direction of the second hollow.

The photocatalyst material may be one in which at least one or more of platinum, palladium, gold, silver, and tungsten are mixed with titanium dioxide or titanium dioxide.

Preferably, the inner wall of the photocatalyst tube has a ring-shaped groove formed in an annular shape in a spiral groove along the extending direction of the first hollow or in a direction crossing the predetermined angle with respect to the extending direction of the first hollow. Thus, a predetermined interval is formed.

More preferably, a plurality of the turning guide plates are arranged to be spaced apart by a predetermined interval along the extending direction of the first hollow, and adjacent rotational guide plates are formed in opposite directions to each other.

In addition, in order to achieve the above object, the harmful air purifying apparatus according to the present invention is a photocatalyst for purifying the air introduced through the air inlet provided in the housing, through the air inlet by the blower and discharged through the air outlet provided in the housing An apparatus for purifying harmful air, comprising: a photocatalyst tube having a first hollow and coated with a photocatalyst material on an inner wall thereof; A linear ultraviolet lamp emitting ultraviolet light; Installed in the first hollow of the photocatalyst tube, the ultraviolet lamp has a second hollow through which it can be supported, and a plurality of plate-shaped wings on the outer surface are arranged at predetermined intervals along the outer circumferential surface parallel to the second hollow. At least one or more pivot guide plate is provided so that the extending surface of the plate-like blades intersected at a predetermined angle with respect to the extending direction of the second hollow.

Preferably, an anion generator is further provided on a flow path between the air inlet port and the photocatalytic reactor.

In addition, an auxiliary filter for removing the unpurified pollutants in the air through the photocatalytic reactor by an adsorption method is further provided on the flow path between the air outlet and the photocatalytic reactor.

Hereinafter, with reference to the accompanying drawings will be described in more detail a photocatalytic reactor according to a preferred embodiment of the present invention and a noxious air purifier applying the same.

1 is a cross-sectional view schematically showing a harmful air purifying apparatus according to a preferred embodiment of the present invention.

Referring to the drawings, the harmful air purifier 100 includes a housing 110, a plurality of photocatalytic reactors 130, and a blower 160. In the drawings, the flow of air through the harmful air purifier is indicated by an arrow so that the flow can be easily understood.

The housing 110 is divided into a first chamber 113, a second chamber 115, a third chamber 116, and a fourth chamber 117 to guide the flow of air introduced through the air inlet 111. It is.

The air introduced through the air inlet 111 is passed through the first chamber 113, the second chamber 115, the third chamber 116, and the fourth chamber 117 in the direction indicated by the arrow 171. The flow path guided by the partition wall is formed in the housing 110 to be discharged through). When the plurality of seals 113, 115, 116 and 117 are partitioned in a zigzag shape in the housing 110, the flow path of the air can be expanded to improve the purification reaction efficiency and to reduce the size of the device. There is an advantage.

A plurality of first and second filters 121 and 122 are provided at the air inlet 111 side of the first chamber 113.

The first filter 121 is installed at the front end of the air inlet 111 is applied to a variety of known materials that can filter contaminants having a relatively large particle size. For example, the first filter 121 may be a sponge material, a paper material, or a metal material of a network structure. What is necessary is just to apply the pass limit size of a 1st filter according to the environment to be used. As an example, the first filter 121 may be applied to remove contaminants having a particle diameter of several tens to several hundred micrometers or more.

The second filter 122 is installed at the rear end of the first filter 121 so as to filter again the fine dust passing through the first filter 121.

As for the passage limiting size of the second filter 122, a smaller one than the first filter 121 is applied. As an example of the material of the second filter 122, a porous synthetic resin material such as polypropylene or polyethylene may be applied. What is necessary is just to apply the 2nd filter 122 also having an appropriate passage limit size according to the environment to be used. As an example, the second filter 122 may have an input of about one tenth to several micrometers.

The negative ion generator 125 is provided above the first chamber 113.

The anion generator 125 generates anion and a small amount of ozone to sterilize bacteria, various pathogens, etc. contained in the inflowing air, and also promotes decomposition and ionization of harmful air by powerful oxidizing power, thereby promoting photocatalyst afterwards. It serves to increase the purification reaction efficiency in the reactor (130).

The structure of the negative ion generator 125 is variously known. The structure of the conventional negative ion generator 125 includes a plurality of opposing ion discharge needles having a structure in which charge is easily generated, and a high pressure applying device for applying a high voltage to the ion discharge needles. The negative ion generator 125 ionizes the air passing through the ion discharge needle and converts it into air having negative ions. In this process, the negative ion generator 125 also generates a small amount of ozone.

A plurality of photocatalytic reactors 130 are provided vertically on the boundary wall surface that divides the second chamber 115 and the third chamber 116. In the photocatalytic reactor 130, the photocatalytic reactor 130 is inserted into and supported in a support frame having an opening on a partition wall of the third chamber 116 in the housing 110. Although not shown, the photocatalytic reactor 130 may be coupled to the housing 110 or the partition wall in the housing by a separate fastening member.

The number of photocatalytic reactors 130 may be appropriately installed in consideration of the use environment and air purification capacity.

Detailed structure of the photocatalytic reactor 130 will be described with reference to FIG. Elements having the same function as in the above-described drawings are denoted by the same reference numerals.

Referring to the drawings, the photocatalytic reactor 130 includes a photocatalyst tube 131, an ultraviolet lamp 135, and a swirl guide plate 140.

The photocatalyst tube 131 is formed in a tubular shape having a first hollow 132. Preferably, the photocatalyst tube 131 is formed in a cylindrical shape.

The inner wall of the photocatalyst tube 131 is coded with a photocatalyst material reacting with ultraviolet rays.

The cocatalyst tube 131 may be formed of a glass material, a metal material such as aluminum, stainless steel, tin, or the like, or various materials such as a ceramic material, and may be treated by applying a photocatalyst material to the inner wall of the tube.

The photocatalyst material encoded on the inner wall of the photocatalyst tube 131 may be a mixture of other elements added to titanium dioxide or titanium dioxide.

As an example of the material added to titanium dioxide, at least one material of platinum, palladium, gold, silver, tungsten may be applied.

More preferably, the inner wall of the photocatalyst tube 131 is formed with a spiral or ring groove 131a as shown in FIG. 3 to induce a swirl flow of air.

The pivot guide plates 140a and 140b are spaced apart by a predetermined interval inside the photocatalyst tube 131. The first turning guide plate 140a and the second turning guide plate 140b are different from each other in the directions of the blades provided in the respective bodies.

First, the first turning guide plate 140a will be described with reference to FIG. 4.

In the first pivot guide plate 140a, a plurality of wings 143 are provided at equal intervals on the body 141 having the second hollow 142 and the outer circumferential surface of the body 141.

Reference numeral 144 is a wing support plate formed to be fitted on the body to facilitate the manufacture of the turning guide plate (140a).

The wing 143 is formed in plate shape, and is provided inclined with respect to the body 141 at predetermined angle. In order to more easily understand the inclination direction of the wing 143 relative to the body 141, a state in which a part of the wing 143 of FIG. 4 is omitted is attached to the body 141 only for one wing 143. A side view of is shown in FIG.

According to another aspect of the present invention, as shown in Figure 6, the wing 143a attached to the body 141 of the swing guide plate 140a is installed at an inclined angle at a predetermined angle but has a slight curvature along the extension direction. Of course, twisted forms can be applied.

The turning guide plate 140a has a larger angle of inclination of the wing with respect to the body, so that an angle at which the direction of inlet air is changed with respect to the longitudinal direction of the first hollow 142 increases, so that the contact time with the inner wall of the photocatalyst tube 131 is increased. And the contact area is expanded. In this case, when the wing 143 is vertically disposed with respect to the body 141, the forward crushing force against the inlet air is so large that the advance of air is difficult, so considering the wing 143 in the longitudinal direction of the body 141 The angle of inclination of) can be appropriately determined in consideration of air purification efficiency and performance within 90 degrees.

On the other hand, the second turning guide plate (140b) is formed such that the inclination direction of the blade with respect to the body is located in the opposite direction to the wing direction of the first turning guide plate (140a).

Preferably, the swing guide plates 140a and 140b having different inclination directions of the wings are arranged to be sequentially spaced apart on the photocatalyst tube, but the inclination angles of the wings 143 with respect to the body 141 are adjacent to each other between the swing guide plates. As shown in FIG. 2, the first hollow 142 is disposed in an opposite direction about the longitudinal direction of the first hole 142. That is, the first turning guide plate 140a, the second turning guide plate 140b, the first turning guide plate 140a, and the second turning guide plate 140b are alternately arranged along the longitudinal direction of the photocatalyst tube 131. It is installed to be arranged.

In this case, as can be seen through FIG. 2 in which the flow of air is indicated by an arrow of a dashed-dotted line, the air introduced into the photocatalyst tube 131 is turned counterclockwise by the first turning guide plate 140a. While advancing in a spiral shape, and then interfering with the second turning guide plate 140b, the rotational direction is changed, and then the screw is advanced in a spiral direction while turning clockwise. In this process, the air advanced in the counterclockwise direction is disturbed by the interference of the second turning guide plate 140b, and the air is mixed. As a result, the distribution of air in the cross section with respect to the forward direction is changed, so that the photocatalyst tube of the air ( Deviation with respect to the frequency of contact with 131) is reduced.

By the same principle, the air passing through the second turning guide plate 140b changes the air distribution at the same time as the turning direction of the air changes in the first turning guide plate 140a at the front, and the second turning guide plate at the front ( 140b), once again the direction of rotation of the air is reversed.

Preferably, the surface of the turning guide plates 140a and 140b is also coated with a compound containing titanium dioxide or titanium dioxide, which is the photocatalyst material described above.

The diameters of the second hollows 142 of the turning guide plates 140a and 140b are formed to such an extent that the linear UV lamp 135 to be mounted can be inserted and supported.

The ultraviolet lamp 135 is a lamp for emitting ultraviolet rays having a sterilizing power, and a lamp for emitting light having a wavelength of 430 nanometers (nm) or less is usually applied.

Electrode portions formed at both ends of the ultraviolet lamp 135 are connected to receive electric power from a power supply device called a ballast.

In the structure in which the UV lamp 135 is installed vertically, the pivot guide plates 140a and 140b located at the outermost side of the lamp 135 and the photocatalyst tube 131 have a slight external force to lower the fixing force of the UV lamp. It can be formed into a size that can be fitted when added. Alternatively, the lamp fixing auxiliary support member (not shown) may be installed in combination with the photocatalyst tube 131 or the housing. In this case, the auxiliary support member may be formed in a structure in which a part facing the traveling path of the air is partially open so that the flow path formed inside and outside the photocatalytic reactor 130 can be maintained.

The air that has passed through the photocatalytic reactor 130 passes through an auxiliary filter installed at the front end of the third chamber 116.

The auxiliary filter 151 may be applied to be able to adsorb and filter the contaminants contained in the untreated air in the photocatalytic reactor 130.

Preferably, the auxiliary filter 151 may be applied with a conventional activated carbon fiber filter (ACF).

The blower 160 is installed in the fourth chamber 117 in front of the auxiliary filter 151. As illustrated, when the air outlet 171 is formed in a direction crossing the predetermined direction with respect to the entry direction of the air introduced through the photocatalytic reactor 130, the blower 160 converts the sucked air in a different direction to discharge the air. Apply a sirocco fan, if possible. Alternatively, if it is not necessary to change the blowing direction, a conventional fan may be applied.

Purified air whose direction is changed via the fourth chamber 117 is discharged through the air outlet 171.

Of course, the blades rotatable vertically or horizontally with respect to the housing 110 may be disposed on the air outlet 171 so as to change the direction of the discharged air.

The operation of the harmful air purifier 100 will be described in more detail below.

The air introduced through the air inlet 111 of the housing 110 is filtered through the first filter 121, the pollutant having a large particle size, and then through the second filter 122, the pollutant having a smaller particle size Is filtered. Air passing through the second filter 122 is sterilized and ionized while passing through the anion generator 125 located above.

After passing through the anion generator 125, the air flows into the second chamber 115, and then flows downward toward the lower opening of the photocatalytic reactor 130, which is opened toward the bottom of the housing 110, and then downwards. Flows into the opening of 130).

The air flowing into the photocatalytic reactor 130 is a large amount of hydroxide prepared by combining a large amount of electrons and holes generated from the reaction of ultraviolet rays irradiated from the ultraviolet lamp 135 and titanium dioxide encoded on the inner wall of the photocatalyst tube 131. Curl removes bacteria, odors and air pollutants, including volatile organic compounds. In this process, the turning guide plates 140a and 140b installed in the photocatalytic reactor 130 increase the frequency of the inflow of air into contact with the photocatalyst tube 131 and reduce the air that is not in contact with the photocatalyst tube 131. Improves the purification efficiency by causing mixing with each other.

The unpurified pollutants in the air passing through the photocatalytic reactor 130 are adsorbed and removed by the auxiliary filter 151 and then discharged in a purified state through the air outlet 171.

The harmful air purifier 100 may be installed and used in various environments, and may be used as an environmentally harmful business such as a manure treatment plant, a dyeing plant, a laundry, a laboratory, a general office, or an augmentation plant.

According to the photocatalytic reactor according to the present invention and the harmful air purifier using the same as described above, the structure for increasing the contact time and the contact area of the air with the photocatalyst tube is simple and the inlet air in the reactor Since the rotational direction of is alternately converted by the interference, the air which is not reacted with the photocatalyst tube is reduced, thereby improving the purification reaction efficiency of harmful air. In addition, it is possible to remove particulate contaminants in addition to gaseous contaminants, and thus there is an advantage in that the purification ability is extended.

Claims (11)

A photocatalyst tube having a first hollow and coated with a photocatalyst material on an inner wall thereof; It is installed in the first hollow of the photocatalyst tube, has a second hollow through which the ultraviolet lamp can be penetrated, and a plurality of plate-shaped wings on the outer side are arranged at predetermined intervals along the outer circumferential surface parallel to the second hollow. And at least one or more pivoting guide plates each of which extends from the plate-shaped blades at an angle with respect to the extending direction of the second hollow. The photocatalytic reactor of claim 1, wherein the photocatalyst material comprises titanium dioxide. The photocatalytic reactor of claim 2, wherein the photocatalyst material is a material in which at least one of platinum, palladium, gold, silver, and tungsten is mixed with the titanium dioxide. The photocatalytic reactor of claim 1, wherein the inner wall of the photocatalyst tube has a helical groove formed along an extending direction of the first hollow. According to claim 1, wherein the inner wall of the photocatalyst tube is characterized in that the ring-shaped grooves formed in an annular shape along the direction crossing the predetermined angle with respect to the extending direction of the first hollow spaced apart a predetermined interval along the extending direction of the hollow. Photocatalytic reactor. According to claim 1, wherein the plurality of the turning guide plate is arranged spaced apart by a predetermined interval along the extending direction of the first hollow, adjacent to the rotating guide plate is formed that the direction of arrangement of the plate-shaped blades are formed in opposite directions to each other Photocatalytic reactor characterized in that. In the noxious air purification device having an air inlet provided in the housing and a photocatalytic reactor for purifying the air introduced through the air inlet by the blower and discharged through the air outlet provided in the housing, The photocatalytic reactor A photocatalyst tube having a first hollow and coated with a photocatalyst material on an inner wall thereof; A linear ultraviolet lamp emitting ultraviolet light; Installed in the first hollow of the photocatalyst tube, the ultraviolet lamp has a second hollow through which it can be supported, and a plurality of plate-shaped wings on the outer surface are arranged at predetermined intervals along the outer circumferential surface parallel to the second hollow. At least one or more swing guide plate is provided with the extending surface of the plate-like blades intersected at a predetermined angle with respect to the extending direction of the second hollow. The apparatus of claim 7, wherein an anion generator is further provided on a flow path between the air inlet and the photocatalytic reactor. The harmful air purifier of claim 7, wherein an inner wall of the photocatalyst tube is formed with a spiral groove along an extending direction of the first hollow. According to claim 7, wherein the inner wall of the photocatalyst tube is characterized in that the ring-shaped grooves formed in an annular shape along the direction crossing the predetermined angle with respect to the extending direction of the first hollow spaced apart a predetermined interval along the extending direction of the hollow. Hazardous Air Filters. 8. The method of claim 7, wherein the plurality of turning guide plates are arranged to be spaced apart by a predetermined interval along the extending direction of the first hollow, wherein the adjacent turning guide plate is formed in the direction opposite to each other Toxic air purifier characterized in that.