KR20110064617A - Ultra violeat sterilizer for water treatment - Google Patents

Abstract

PURPOSE: An UV sterilizer is provided to provided to effectively sterilize and decompose bacteria and organic materials and to reduce the volume of a photo reaction unit. CONSTITUTION: An UV sterilizer for water treatment comprises: a housing(10) of a barrel; a light tube(20) which is mounted inside the housing; an UV lamp(25) which is mounted inside the light tube and irradiates UV ray to the outside of the light tube; a plurality of channels(35) which contact to the outside of the light tube; a light reaction unit(30) forming a single waterway by interconnection of the channels; a first cap unit(60) which is coupled to one side of the housing and discharging sterilized; and a second cap unit(80) which is coupled to the other side of the housing.

Description

Ultraviolet Sterilizer for Water Treatment

The present invention relates to an ultraviolet sterilizer for water treatment, and more particularly, to an ultraviolet sterilizer capable of effectively sterilizing and decomposing bacteria and organic substances contained in water to be treated by ultraviolet light and a photocatalyst.

Korea's general industry developed very fast, and the water supply rate increased from 17.1% in 1961, per capita water supply to 102 liters in 2001 to 87.8% in 2001, per capita water supply to 374 liters in 2005. Water supply rate rose to 95%.

Along with the water supply rate, water pollution caused by environmental pollution is a serious problem, and various harmful substances are detected in tap water. The detection of these harmful substances is not related to the discharge of wastewater and air pollutants generated by various industries in Korea with high population density. In particular, chlorine disinfection, which has been widely used in water treatment plants, produces THM (Trihalomethanes) substances that are harmful to the human body in treated water, and has a disadvantage in that chlorine-based organic compounds emitted from various industries cannot be removed.

Therefore, in order to remove such hardly decomposable substances, some treatment plants use activated carbon adsorption and ozone oxidation, but activated carbon adsorption may be contaminated by physical adsorption. ) Produces a compound.

Due to the above problems, most households avoid drinking water and drink groundwater or commercially available bottled water instead of tap water or use water purifiers.

However, boiling tap water every time or using groundwater is quite cumbersome, and the cost of using commercially available bottled water is a problem, and most households currently use water purifiers for drinking.

However, in addition, various water purifiers widely used in Korea are more unstable than tap water due to contamination by microorganisms during the long-term use of odor, trihalomethane, bacteria, taste, natural organic substances, and ionic substances in water. The supply of water is a social problem.

Accordingly, in recent years, ultraviolet disinfection that can sterilize pathogenic bacteria and harmful microorganisms without causing secondary pollution has attracted attention.

The present invention has been made to improve the above problems, and more particularly, an object of the present invention is to provide an ultraviolet sterilizer capable of effectively removing various bacteria or viruses in raw water using ultraviolet light.

Another object of the present invention is to provide an ultraviolet sterilizer capable of decomposing organic materials that cannot be treated with ultraviolet light alone using a photocatalyst.

Ultraviolet sterilizer for water treatment of the present invention for achieving the above object is a cylindrical housing with both sides open; A light transmitting tube installed inside the housing; An ultraviolet lamp installed inside the floodlight tube to irradiate ultraviolet light to the outside of the floodlight tube; Installed in the housing to surround the floodlight tube and a plurality of unit blocks are coupled to each other to form a plurality of passages in contact with the outer surface of the floodlight tube, the passages are interconnected to extend the residence time of the water is a single A photoreaction unit forming a channel; A cap unit coupled to one side of the housing and configured to introduce water into the inlet of the waterway and discharge the sterilized water through the waterway; And a second cap unit coupled to the other side of the housing.

The unit blocks are formed to protrude from the inner side, the end is in contact with the outer surface of the light transmission tube and the contact jaw between the side of the contact jaw is provided so as to be parallel to the adjacent unit block First and second arch portions forming the passage, a first coupling portion formed in the first arch portion to engage with a second arch portion of an adjacent unit block, and a shape corresponding to the first coupling portion A second coupling portion formed in the second arch portion and engaged with the first arch portion of an adjacent unit block and formed by cutting one side of the contact jaw so that the first and second arch portions can be connected to each other; It is provided with a cutout, the photoreaction unit is characterized in that the unit blocks are formed by combining so that the cutout of the adjacent unit blocks are disposed at different positions.

The first and second arch portions of the unit block have a contact surface formed by protruding a plurality of protrusions to enlarge the contact area in contact with water, wherein the contact surface is formed with a photocatalyst coating layer photoactivated by the ultraviolet light It is done.

The first cap unit is coupled to one side of the photoreaction unit, the first plate formed with the first and second through holes, and the inflow is inserted into the passage which is the inlet of the waterway of the passage through the first hole And an access module having a pipe and a discharge pipe inserted into a passage that is an outlet of the water channel through the second hole, and a first cover supporting the access module and screwing to the housing. do.

As described above, according to the present invention, since the photoreaction unit formed by combining a plurality of unit blocks has a zigzag passage, the water stays long in the photoreaction unit while extending the residence time of the water to reduce the volume of the photoreaction unit. By allowing them to stay, they can increase the time of contact with ultraviolet light, improving water treatment efficiency.

In addition, the present invention provides an ultraviolet sterilizer that can remove various bacteria and viruses in raw water by using a photocatalyst as well as decompose organic substances.

Hereinafter, an ultraviolet sterilizer for water treatment according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in detail.

1 is an exploded perspective view of an ultraviolet sterilizer according to an embodiment of the present invention, FIG. 2 is a partially cutaway side view showing the inside of FIG. 1, FIG. 3 is a cross-sectional view of FIG. 1, and FIG. 4 is a photoreaction applied to FIG. 1. This is an exploded perspective view of the unit.

1 to 4, the ultraviolet sterilizer according to an embodiment of the present invention is largely the housing 10, the light transmission tube 20, the ultraviolet lamp 25, the photoreaction unit 30, The first cap unit 60 and the second cap unit 80 is provided.

The housing 10 has a hollow cylindrical shape and has a structure in which left and right sides are open. Threads are formed on the left and right outer circumferential surfaces of the housing 10 so that the first and second covers of the first and second cap units to be described later are screwed together.

The light transmitting tube 20 has a hollow interior, one side is blocked and the other side has an open structure. The light transmitting tube 20 is formed of a light transmitting material through which light can be transmitted. For example, a quartz tube may be used. The light transmitting tube 20 is installed at the center of the housing 10 along the longitudinal direction of the housing 10. The length of the light transmitting tube 20 is preferably formed larger than the length of the housing (10).

Inside the light transmission tube 20 is a conventional ultraviolet lamp 25 is installed. The light transmitting tube 20 allows the light generated by the ultraviolet lamp 25 to pass therethrough, and to block the ultraviolet lamp 25 from contacting with water.

Sterilization effect by UV irradiation is effective for all species except mold. Since the sterilization effect of the ultraviolet rays varies depending on the wavelength of the ultraviolet rays, since the wavelength of 250 to 260 nm is most effective, it is preferable to use the ultraviolet lamp 25 having the wavelength of 250 to 260 nm. Although not shown, the ultraviolet lamp 25 is supplied with driving power through a power source connected to the wire 27. Commercial power or battery can be used as the power supply.

Preferably, power is applied to the ultraviolet lamp 25 only when water treatment is required. To this end, a sensor (not shown) capable of detecting the flow of water is installed, that is, a flow rate sensor or a flow sensor, and when the water flows into the housing 10, power is supplied to the ultraviolet lamp 25 by a signal output from the sensor. The power supply circuit is configured to be applied.

The photoreaction unit 30 is formed in a circular shape having an outer curvature corresponding to a radius of curvature of the housing 10. The photoreaction unit 30 is installed inside the housing 10 to surround the light transmitting tube 20. Therefore, as shown in FIG. 3, the housing 10, the photoreaction unit 30, and the light-transmitting tube 20 are sequentially arranged from the outermost side.

Inside the photoreaction unit 30, a passage 35 continuous from the left side to the right side is provided. The passage 35 is formed such that a plurality of radially disposed on the basis of the center of the photoreaction unit 30. And the light transmitting tube 20 is inserted into the center of the photoreaction unit 30 is installed. Therefore, the photoreaction unit 30 has a structure in which a plurality of passages 35 are disposed around the light transmission tube 20. In the illustrated example, four passages 35 are formed. A portion of each passage 35 is in contact with the outer surface of the light transmitting tube 20 so that ultraviolet light can be irradiated to the passage 35.

In the present invention, the passages 35 are connected to each other to form a single channel through which water moves. That is, as shown in FIG. 4, water introduced through one of the passages 35 flows through the remaining passages sequentially and is discharged to the outside of the housing 10.

The photoreaction unit 30 is formed by combining a plurality of unit blocks 40. In the illustrated embodiment, four unit blocks 40 are combined to form one photoreaction unit 30. Unlike the illustrated, the photoreaction unit 30 may be formed by combining two or three, or five or more unit blocks 40.

As shown in FIG. 3, the first unit block 40a, the second unit block 40b, the third unit block 40c, and the fourth unit block of the unit blocks constituting the photoreaction unit 30 are illustrated for convenience of description. A description will be given by dividing by 40d.

The first unit block 40a is formed to protrude from the inner side so that the end thereof is in parallel with both sides of the contact jaw 41a with the contact jaw 41a contacting the outer surface of the light transmitting tube and the contact jaw 41a therebetween. And first and second arch portions 45a and 47a which are combined with adjacent second unit blocks 40b and third unit blocks 40c to form passages 35, and first arch portions 45a. A first engagement portion 48a formed in the first engagement portion 48a and engaged with the second arch portion 47b of the adjacent second unit block 40b, and in a shape corresponding to the first engagement portion 48a; The second coupling portion 49a and the first and second arch portions 45a and 47a formed at 47a and engaged with the first arch portion of the adjacent third unit block 40c may be connected to each other. It is provided with a cutout portion 43a formed by cutting one side of the contact jaw 41a.

The first and second arch parts 45a and 47a form a passage through which water can move, and a plurality of protrusions, which will be described later, are formed on the inner surface. The first coupling portion 48a is formed to protrude to form a jaw on the inner side of the first arch portion 45a, and the second coupling portion 49a forms a jaw on the outer surface of the second arch portion 47a. To protrude to form. The first and second coupling parts 48a and 49a have shapes corresponding to each other.

Since the configuration of the second unit block 40b, the third unit block 40c, and the fourth unit block 40d is the same as that of the first unit block described above, a detailed description thereof will be omitted. However, the position of the cutout formed in each unit block is different from that of the adjacent unit block.

Each unit block having the above-described configuration is connected to each other and adjacent unit blocks to form a passage 35 by connecting the adjacent first and second arch parts. When the first coupling portion 48a of the first unit block 40a is coupled to the second coupling portion 49b of the second unit block 40b, the first arch portion 45a of the first unit block 40a is combined. And the second arch portion 47b of the second unit block 40b are combined to form one passage. When the second coupling part 49a of the first unit block 40a is coupled to the first coupling part 48c of the third unit block 40c, the second arch part 47a of the first unit block 40a is combined. ) And the first arch portion 45c of the third unit block 40c form another passage. In this way, when four unit blocks are combined, a total of four passages are formed.

Each passage is then connected to each other by an incision. The cutouts formed in the unit blocks are formed by combining the unit blocks to be disposed at different positions. That is, when the unit blocks are combined to form one photoreaction unit, if the cutout 43a is formed at the left side of the first unit block 40a, the adjacent second and third unit blocks 40b and 40c are formed. ), Cutouts 43b and 43c are formed on the right side, respectively. The cutout 43d of the contact jaw 41d of the fourth unit block 40d is formed at the left side.

By the configuration of the unit blocks described above, the photoreaction unit 30 forms a single channel through which the passages are connected to each other so that water flows zigzag. Therefore, in the present invention, the water flowing into the inlet, that is, one of the passages, is zigzag along each passage and is discharged through the last passage, which is the exit of the canal, turning around the floodlight tube 20 once.

In this way, each passage is connected in a zigzag by the incision to extend the residence time of water. This allows the water to stay in the photoreaction unit 30 for a long time while reducing the volume of the photoreaction unit 30, thereby improving the water treatment efficiency by increasing the contact time with ultraviolet light.

Preferably, the first and second arch portions of each unit block 40 have a contact surface formed by protruding a plurality of protrusions 50 to enlarge the contact area in contact with water. In the illustrated example, the protrusion 50 is formed long along the direction in which water flows. Alternatively, the protrusion 50 may be formed in a direction crossing at right angles with the direction in which the water flows. In this case, the water flowing along the passage becomes turbulent in contact with the projections. This turbulent flow can further increase the contact area with ultraviolet light to increase the water treatment efficiency.

The photocatalyst coating layer is preferably formed on the contact surfaces of the first and second arch parts so as to decompose various organic substances contained in water. The photocatalyst is a substance having a strong redox capability by ultraviolet light, and examples of the photocatalyst that can be used as the photocatalyst include ZnO, CdS, WO ₃ , and TiO ₂ . Among these, titanium dioxide has a much stronger oxidation power than that of the excitation electrons. The energy position of the hole is about +3 V at the hydrogen reference potential, which is much higher than that of 1.36 V of chlorine (Cl ₂ ) and 2.07 V of ozone (O ₃ ), and thus has strong sterilizing power and organic decomposition ability. Therefore, it is preferable to use titanium dioxide (TiO ₂ ) as a photocatalyst. When titanium dioxide photocatalyst is irradiated with ultraviolet light by UV lamp, electrons and major bands are formed to produce hydroxy radical (-OH) and superoxide which have strong oxidizing power. And carbon dioxide gas. This principle oxidizes and decomposes organic pollutants in water to harmless water and carbon dioxide. In addition, bacteria and viruses are decomposed and sterilized by the strong oxidation of the photocatalyst.

The first cap unit 60 is coupled to an open side of the housing 10. Water is introduced into the photoreaction unit 30 through the first cap unit 60 and the treated water is discharged.

An example of the first cap unit is coupled to one side of the photoreaction unit 30, the first plate 61 and the first and second through-holes 63, 65 are formed, the inlet tube 73 and the discharge tube 71 ) Consists of an access module (73) and a first cover (79).

The first plate 61 is formed in a disc shape and slightly smaller than the inner diameter of the housing 10. In addition to the first and second through holes 63 and 65, the first plate 61 is provided with an insertion hole 67 into which an end of the light transmission tube 20 is fitted. In the illustrated example, the insertion hole 67 is formed so that the first and second through holes 63 and 65 are connected to each other, but the insertion hole 67 may be formed to be separated from the first and second through holes. In addition, the insertion hole 67 may be omitted depending on the length of the light transmitting tube (20). The first plate 61 serves to block the remaining two passages on one side of the photoreaction unit 30 except for the passage that is the inlet and the outlet of the waterway.

The inflow pipe 73 installed in the access module 70 is inserted into the first through hole 63 of the first partition plate and inserted into the inlet of the water channel, that is, the water inflow path. The discharge pipe 65 is inserted into the second through hole 65 of the first plate and inserted into the outlet of the water channel, that is, the passage through which the water is discharged. The inlet pipe 73 is connected to the raw water supply pipe (not shown) so that the raw water, that is, the water to be treated. In addition, the discharge pipe 65 may be provided with a treated water transport pipe (not shown) to discharge the treated water from the photoreaction unit. When the ultraviolet sterilizer of the present invention is used by connecting to the water supply pipe, the water supply pipe is applied to the raw water supply pipe and the treated water transport pipe. The inlet pipe 73 and the discharge pipe 65 is a portion inserted into the passage has a shape corresponding to the cross-sectional shape of the passage.

The first cover 79 is screwed to the housing 10 to support the access module (70). In addition, reference numerals 75 and 77 are for maintaining watertightness with rubber rings mounted inside the first cover 79.

The second cap unit 80 is coupled to the other open side of the housing 10. The second cap unit 80 is inserted into the second plate 81 coupled to the other side of the photoreaction unit 30 and the through hole formed in the second plate 81 to draw the wire 27 of the ultraviolet lamp. It consists of a rubber tube (83) and a second cover (85) screwed to the housing (10). Unexplained reference numeral 84 is a rubber ring for holding the watertight.

As described above, the present invention has been described with reference to one embodiment shown in the drawings, which is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. .

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

1 is an exploded perspective view of an ultraviolet sterilizer according to an embodiment of the present invention,

FIG. 2 is a partial cutaway side view showing the inside of FIG. 1;

3 is a cross-sectional view of FIG. 1,

4 is an exploded perspective view of the photoreaction unit applied to FIG. 1.

<Explanation of symbols for the main parts of the drawings>

10 housing 20 transparent tube

25: UV lamp 30: Photo reaction unit

35: passage 40: unit block

60: first cap unit 80: second cap unit

Claims (4)

A cylindrical housing having both sides open; A light transmitting tube installed inside the housing; An ultraviolet lamp installed inside the floodlight tube to irradiate ultraviolet light to the outside of the floodlight tube; Installed in the housing to surround the floodlight tube and a plurality of unit blocks are coupled to each other to form a plurality of passages in contact with the outer surface of the floodlight tube, the passages are interconnected to extend the residence time of the water is a single A photoreaction unit forming a channel; A first cap unit coupled to one side of the housing and configured to introduce water into the inlet of the waterway and discharge the sterilized water through the waterway; And a second cap unit coupled to the other side of the housing. According to claim 1, wherein each unit block is formed so as to protrude from the inner side end is provided with a contact jaw in contact with the outer surface of the light transmitting tube, the contact jaw in parallel to both sides of the contact jaw between the adjacent First and second arch portions which are combined with the unit block to form the passage, a first coupling portion which is formed to be engaged with the second arch portion of the adjacent unit block and is formed in the first arch portion, and the first A second coupling portion formed in the second arch portion in a shape corresponding to the coupling portion and engaged with the first arch portion of an adjacent unit block, and the contact jaw so that the first and second arch portions can be connected to each other; With a cutout formed by cutting one side, The photoreaction unit is a UV sterilizer for water treatment, characterized in that formed by combining the unit blocks so that the cutout of the adjacent unit blocks are disposed at different positions. The method of claim 2, wherein the first and second arch of the unit block has a contact surface formed by projecting a plurality of projections to enlarge the contact area in contact with water, Ultraviolet sterilizer for water treatment, characterized in that the contact surface is formed with a photocatalyst coating photoactivated by the ultraviolet light. The method of claim 1, wherein the first cap unit is coupled to one side of the photoreaction unit and the first plate and the first through the second through hole is formed, and the inlet of the waterway of the passages through the first hole An access module having an inlet pipe inserted into a passageway and a discharge pipe inserted into a passage that is an outlet of the waterway among the passages through the second hole, and a first cover supporting the access module and screwing to the housing UV sterilizer for water treatment, characterized in that it comprises a.

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