KR101055358B1 - Air sterilizing apparatus - Google Patents

Abstract

PURPOSE: An air sterilizer is provided to enhance a sterilization effect by securing enough area of an optical catalyst reacting with ultraviolet ray. CONSTITUTION: An air sterilizer comprises a case, a base panel, a sterilization unit, a fan unit, and a control circuit unit. The case(110) is equipped with an outlet(112) through which the processed air is discharged. The base panel(120) is installed inside the case. The sterilization unit(130) sterilizes the air by using ultraviolet ray and an optical catalyst activated by the ultraviolet ray. The fan unit is installed in the base panel and flows the air. The control circuit unit(150) is installed in the base panel and controls the sterilization unit and fan unit(140).

Description

Air sterilizer

The present invention relates to an air sterilizer, and in particular, having a sterilization unit consisting of a plurality of aluminum cells having an ultraviolet lamp and a photocatalyst coating layer, the air sterilization effect by allowing the air flowing into the sterilizer to stay around the sterilization unit for a while. It relates to an air sterilizer which is raised.

Considering that 80% of the substances a person consumes in a day is air, and most people live indoors most of the day, the cleanliness of indoor air is very closely related to health. In particular, due to the development of the industry, the air pollution becomes serious and the air pollution in the room becomes more severe. Therefore, indoor air contains various pollutants such as bacteria, viruses, molds, fine dust, harmful gases, and odorous odors that are harmful to health. It is included.

On the other hand, an air purifier is used to purify the polluted air in the room, and the air purifier is configured to remove dust, bacteria and odors in the air by using various filters or ionizers.

However, the air purifier has some effects on the removal of pollutants contained in the air, but the effect of removing the bacteria in the air is known to be insignificant.

On the other hand, if you inhale without removing various harmful bacteria contained in the air, it can be harmful to your health. Therefore, you can sterilize the polluted air and change it into clean air so that you can inhale the indoor air with confidence. Various air sterilizers are used.

Recently, air sterilizers use ultraviolet rays and photocatalysts, and these air sterilizers sterilize and deodorize the incoming air by using ultraviolet rays and photocatalysts activated by ultraviolet rays, and sterilize and deodorize the air and anion together. It makes the room more comfortable.

However, the conventional air sterilizer has a problem in that the air flow path is simple and the time for the air to react with the ultraviolet ray and the photocatalyst is very short, thereby reducing the sterilization effect.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an air sterilizer which increases sterilization effect by improving the flow path of air to increase the time for the air to react with ultraviolet light and photocatalyst.

Air sterilizer of the present invention to achieve the object as described above and to perform the problem for eliminating the conventional defects is provided with an inlet through which air is introduced, the case having a discharge port through which the treated air escapes; A base panel connected to the inlet port and having a guide for guiding air introduced into the case through the inlet port toward the outlet port, the base panel mounted inside the case; A UV-C lamp for generating ultraviolet rays having a wavelength range of 100 to 280 nm, and a hole through which the UV-C lamp penetrates are formed in the center, and a photocatalyst coating layer made of silver-copper-rhodium-titanium dioxide-nickel is formed on the surface thereof. It consists of a plurality of aluminum cells which are formed to be coupled to the UV-C lamps to maintain a constant interval with each other, and the frame supporting the UV-C lamps and aluminum cells and fixed to the base panel and the guide A sterilization unit installed on the base panel so as to be located at the inlet side in the flow passage formed by the sterilization unit to sterilize air by using ultraviolet light and photocatalyst activated by ultraviolet light; A fan unit installed in the base panel to flow air; A control circuit unit installed on the base panel to control a sterilization unit and a fan unit; And a reflection surface installed in the flow passage and reflecting ultraviolet rays generated by the sterilization unit to diffuse in the flow passage, and blocking a part of the flow passage at the rear end of the sterilization unit to flow through the flow passage. It is characterized in that consisting of a reflector plate to temporarily stand in the vicinity of the sterilization unit.

On the other hand, the reflecting plate is disposed between the sterilizing unit and the base panel, and the first reflecting portion fixed to the base panel, and the second bent upright from the base panel at the end of the first reflecting portion to block a part of the flow passage It consists of a reflector.

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Meanwhile, the guide may include: a first region connected to the inlet and provided with two guide plates spaced apart from each other at regular intervals to provide a constant flow area; And a second region extending from the first region to the discharge port, the second region being disposed to be gradually separated from the two guide plates.

On the other hand, the fan unit is composed of a sirocco fan having a structure parallel to the base panel and extending from one side of the discharge port to the other side.

According to the present invention having the characteristics as described above, in order to remove harmful bacteria in the air by using the photocatalyst activated by ultraviolet rays and ultraviolet rays and to remove odors, the air flowing into the case may stay around the sterilization unit for a while. The sterilization effect can be increased.

In addition, the sterilization unit is configured to penetrate the UV-C lamp to the center of the aluminum cells arranged at regular intervals apart from each other so that the ultraviolet rays can be smoothly irradiated into the air through the space provided between the aluminum cells. As a result, the area of the photocatalyst to be reacted can be sufficiently secured to increase the sterilization effect.

In addition, by configuring the fan unit as a sirocco fan, noise generated when the fan unit is driven can be reduced, and due to the characteristics of the sirocco fan, air in the case is not immediately discharged to the outside and some air stays inside the case for a while, so that the reflective film In addition, the sterilization efficiency of the air can be further increased.

1 is a perspective view showing the structure of an air sterilizer according to a preferred embodiment of the present invention;
2 is a perspective view showing a state in which parts are installed in the base panel according to the present invention;
3 is a plan view of FIG.
4 is a perspective view of a sterilization unit according to the present invention;
5 is a cross-sectional view showing a state in which the aluminum cell according to the present invention is installed,
6 is a perspective view showing a state in which the reflecting plate according to the present invention is installed,
7 is a perspective view showing the structure of a base panel further provided with an auxiliary reflector;
8 is a plan view showing the structure of a reflector and an auxiliary reflector;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a perspective view showing the structure of an air sterilizer according to a preferred embodiment of the present invention, Figure 2 is a perspective view showing a state in which the components are installed in the base panel according to the invention, Figure 3 is a plan view of Figure 2, Figure 4 Figure 5 is a perspective view of a sterilization unit according to the invention, Figure 5 is a sectional view showing a state in which the aluminum cell is installed according to the invention, Figure 6 is a perspective view showing a state in which the reflecting plate according to the invention is installed.

The air sterilizer of the present invention is an air sterilizer which removes harmful bacteria and odor components in the air by using a photocatalyst activated by ultraviolet rays and ultraviolet rays, so that the sterilization effect can be further improved by improving the flow path of air. ), A base panel 120, a sterilizing unit 130, a fan unit 140, a control circuit unit 150, and a reflecting plate 160.

One side of the case 110 is provided with an inlet 111 through which air is introduced, and the other side is provided with an outlet 112 through which the treated air is discharged, and the inlet 111 has foreign substances such as dust contained in the air. A prefilter 113 for removing the filter is installed.

The base panel 120 is provided with a sterilization unit 130, a fan unit 140, a control circuit unit 150, and a reflecting plate 160. The base panel 120 in which the components are installed is installed inside the case 110. Inserted into, it is fixed to the inside of the case (110).

On the other hand, the base panel 120 is provided with a guide 121 for forming a flow passage for guiding the air flowing into the inside of the case 110 through the inlet 111 to the outlet 112, such a guide 121 ) Are formed by two guide plates 1211 and 1212 installed upright on the base panel 120 while being spaced apart from each other. As described above, the guide 121 formed by the two guide plates 1211 and 1212 is connected to the inlet 111 and has a first area A1 which provides a constant flow area, and an outlet 112 from the first area A1. It extends to), and consists of a second area (A2) formed to gradually increase the flow area toward the outlet 112 side. In this case, the first area A1 may be formed by installing the two guide plates 1211 and 1212 in parallel with each other, and the second area A2 may have a part of the two guide plates 1211 and 1212 opposite to each other. Each of the guide plates 1211 and 1212 may be formed by gradually moving away from each other.

The sterilization unit 130 is installed on the base panel 120 so as to be located on the inlet 111 side in the flow passage formed by the guide 121 to remove harmful bacteria or odor components in the air introduced. The sterilization unit 130 is composed of a UV-C lamp 131, a photocatalyst coated aluminum cell 132, and a frame 133.

The UV-C lamp 131 generates ultraviolet rays having a wavelength range of 100 to 280 nm. On the other hand, ultraviolet rays are divided into UV-A, B, and C according to the wavelength range, wherein the wavelength range of UV-A is 315-400 nm, the wavelength range of UV-B is 280-315 nm, and the wavelength of UV-C. Since the area is 100-280 nm, since UV-C is known to have a very high sterilizing power, the sterilizing power of the air sterilizer can be further increased by using the UV-C lamp 131.

The aluminum cell 132 is a plate-shaped member in which a hole 1322 through which the UV-C lamp 131 penetrates is formed at a central portion thereof, and a plurality of the aluminum cells 132 are spaced apart from each other at regular intervals along the length direction of the UV-C lamp 131. . The surface of the aluminum cell 132 is provided with a photocatalyst coating layer 1321 formed by applying a silver-copper-rhodium-titanium dioxide-nickel coating.

As such, the aluminum cells 132 disposed together with the UV-C lamps 131 are spaced apart from each other to form a space therebetween, so that ultraviolet rays generated from the UV-C lamps 131 may be irradiated into the flow passage. In addition, since ultraviolet rays are smoothly irradiated onto the surface of the photocatalyst coating layer 1321 to ensure a wide reaction surface area, activation of the photocatalyst can be promoted.

The frame 133 supports the UV-C lamp 131 and the aluminum cells 132 and is fixed to the base panel 120 while supporting the UV-C lamp 131 and the aluminum cells 132. do. If the frame 133 can provide a function of supporting the UV-C lamp 131 and the aluminum cells 132 and fixed to the base panel 120, the structure may be variously configured.

Sterilization unit 130 is configured as described above to remove harmful bacteria and odor components in the air by the ultraviolet light generated from the UV-C lamp 131, the photocatalyst activated by the ultraviolet light, the anion emitted from the photocatalyst is sterilized By exiting the air sterilizer and spreading out together with the air, it is possible to further remove harmful bacteria and odor components in the indoor air.

The fan unit 140 is installed on the base panel 120 to be located at the outlet 112 side in the flow passage to flow air. The fan unit 140 has a rotating shaft parallel to the base panel 120, is composed of a known sirocco fan having a structure extending from one side of the outlet 112 to the other side, by rotating by the motor 141 to air Will flow.

On the other hand, the sirocco fan is advantageous for noise reduction, and due to its structural characteristics, some air remains in the flow passage without immediately discharging all the air inside the flow passage, and the sirocco fan and the reflector 160 described later By the vortex is generated inside the flow passage by allowing the air to temporarily stay around the sterilization unit 130 it is possible to increase the sterilization efficiency.

The control circuit unit 150 is installed in the base panel 120 to control the sterilization unit 130 and the fan unit 140 by receiving a user's operation signal.

The reflector plate 160 reflects the ultraviolet rays generated from the sterilization unit 130 to diffuse into the flow passage, and the air flowing through the flow passage by blocking a part of the flow passage at the rear end of the sterilization unit 130 Temporary stagnation near the sterilization unit 130 is to increase sterilization efficiency.

The reflective plate 160 is disposed between the sterilization unit 130 and the base panel 120, and is fixed to the base panel 120 and the end of the first reflecting unit 161. The second reflector 162 is bent upright from the base panel 120 to block a portion of the flow passage, wherein the second reflector 162 has a structure upright at the rear end of the sterilization unit 130 Is bent. The rear end mentioned here is based on the flow direction of air.

The reflective plate 160 is made of aluminum as a whole, and by smoothly treating the surface thereof, the reflective surface 160a for the reflection of ultraviolet rays can be easily formed.

FIG. 7 is a perspective view showing the structure of the base panel further provided with an auxiliary reflector, and FIG. 8 is a plan view showing the structure of the reflector and the auxiliary reflector.

By further providing an auxiliary reflector plate 170 to further improve the air flow of the air sterilizer configured as described above can further increase the sterilization effect.

The auxiliary reflecting plate 170 is installed in the guide 121 to block the air flow path at the rear end of the second reflecting unit 162 formed in a structure upright in the rear end of the sterilization unit 130, so that the air can communicate It consists of a plurality of flow holes 171 to be formed.

The auxiliary reflecting plate 170 further prevents the flow of air at the rear end of the reflecting plate 160 to generate a vortex, thereby increasing the time for the air to stay around the sterilization unit 130.

When the auxiliary reflector 170 is added as described above, a flow hole 163 is further formed in the second reflector 162 to provide an environment for proper air communication. The flow hole 163 is preferably formed at a position shifted from the flow hole 171 of the auxiliary reflector plate 170.

This is because when the flow holes 163 and 171 formed in the second reflector 162 and the auxiliary reflector 170 are located on the same line, vortices are weakly generated, and thus the time for air to stay around the sterilization unit 130 is very short. Rather, since some of the ultraviolet rays generated from the sterilization unit 130 are irradiated outward through the flow holes 163 and 171 formed in the reflector plate 121 and the auxiliary reflector plate 170, the ultraviolet density around the sterilization unit 130 is lowered. It causes problems.

Therefore, the flow holes 163 and 171 formed in the second reflector 162 and the auxiliary reflector plate 170 are alternately formed, thereby providing an environment for proper communication of air, while maintaining stagnation of air around the sterilization unit 130. Vortex of sufficient intensity can be generated, and when the ultraviolet ray escapes through the flow hole 163 of the second reflector 162, the auxiliary reflector 170 reflects it again, thereby causing the ultraviolet ray through the flow holes 163 and 171. By preventing the escape as it is, it is possible to sufficiently maintain the ultraviolet density around the sterilization unit (130).

The operation of the air sterilizer configured as described above will be described.

When the air in the flow passage is discharged to the outside through the outlet 112 of the case 110 by the driving of the fan unit 140, a negative pressure (-) is formed inside the flow passage, the inlet 111 by this negative pressure Air flows into the inside of the case 110 through).

As such, the air flowing into the case 110 through the inlet 111 flows along the flow path formed by the guide 121, and at this time, from the UV-C lamp 131 of the sterilization unit 130. In addition to the removal of harmful bacteria and odor components in the air by the generated ultraviolet rays, organic substances causing odor or contamination are decomposed by photocatalysts activated by ultraviolet rays, and sterilization and odor components are removed. In addition, since the anion emitted from the photocatalyst escapes out of the air sterilizer with the treated air and diffuses into the room, sterilization and deodorization is performed not only in the air sterilizer but also in the indoor air.

On the other hand, the reflection plate 160 installed in the flow passage reflects the ultraviolet rays generated from the UV-C lamp 131 and diffuses into the flow passage to increase the efficiency of sterilization and odor removal by ultraviolet rays, and furthermore, the base panel 120 The second reflector 162 formed in a structure perpendicular to the blockage blocks a part of the flow passage, and air is temporarily stagnated in the flow passage due to the characteristics of the sirocco fan, thereby processing time by the sterilization unit 130. It can be increased, thereby increasing the sterilization effect.

Gram negative bacteria E. coli O157 (E. coli O157), enteritis Vibrio (V. parahaemolyticus), Salmonella (S. typhimurium), P. aeruginosa ) And antimicrobial tests were performed using Gram-positive bacteria (B. cereus), MRSA (Methicillin-resistant S. aureus), and L. monocytogenes.

Experimental method was cultured E. coli O157, enteritis Vibrio, Salmonella, Pseudomonas aeruginosa, Bacillus, MRSA, Listeria in a liquid medium, and then the cultured bacteria were diluted to 10 ⁶ ~ 10 ⁷ CFU / mL It was adjusted to be used for the test. Aseptically inoculate 200 µl of each of the above-prepared bacterial solutions into a sterile inoculum (Carrier: comtton. 5 × 5 cm defined in KS K 0905) and place it in the chamber (size: 80 cm × 80 cm × 80 cm). After the air sterilizer and the inoculum were put together and the air sterilizer was operated for 6 hours, the viable cell count was measured in the inoculum, and the reduction rate was determined through a control test for each bacterium.

On the other hand, the control test is carried out in the same manner as above, but after 6 hours without operating the air sterilizer is measured value of viable count in the inoculum.

The number of viable cells was calculated by Equation 1 below, and the reduction rate was calculated by Equation 2.

N = C × D × V -------- Equation 1

Where N is the number of viable cells, C is the number of colonies (mean number of two colonies), D is the dilution factor (dilution factor of diluent), and V is the liquid amount of SCDLP Broth used in the extraction step (20 ml).

R (%) = ((A × B) / A) × 100 Equation 2

Where R is the reduction rate, A is the viable cell count of the control test, and B is the viable cell number of the air sterilizer according to the present invention.

Test Items unit Sample classification Results Antibacterial test (E. coli O157) CFU / Carrier Control test 9.8 × 10 ⁵ Antibacterial test (E. coli O157) CFU / Carrier Invention 9.4 × 10 ² (99.9%) Antibacterial test (enteritis vibrio) CFU / Carrier Control test 6.4 × 10 ⁶ Antibacterial test (enteritis vibrio) CFU / Carrier Invention 2.0 × 10 ² (99.9%) Antibacterial Test (Salmonella) CFU / Carrier Control test 8.6 × 10 ⁵ Antibacterial Test (Salmonella) CFU / Carrier Invention 1.0 × 10 ² (99.9%) Antibacterial Test (Pseudomonas aeruginosa) CFU / Carrier Control test 4.8 × 10 ⁵ Antibacterial Test (Pseudomonas aeruginosa) CFU / Carrier Invention 1.2 × 10 ² (99.9%) Antibacterial test (Bacillus bacteria) CFU / Carrier Control test 1.6 × 10 ⁴ Antibacterial test (Bacillus bacteria) CFU / Carrier Invention 2.4 × 10 ² (98.5%) Antibacterial Test (MRSA) CFU / Carrier Control test 2.2 × 10 ⁶ Antibacterial Test (MRSA) CFU / Carrier Invention 5.0 × 10 ² (99.9%) Antibacterial test (listira bacteria) CFU / Carrier Control test 3.8 × 10 ⁵ Antibacterial test (listira bacteria) CFU / Carrier Invention 5.0 × 10 ² (99.9%)

As can be seen in the above table, E. coli O157, enteritis Vibrio, Salmonella, Pseudomonas aeruginosa, MRSA (Superbacteria), Listeria after 6 hours all showed 99.9% antimicrobial activity, and against Bacillus After 6 o'clock, 98.5% of the antimicrobial activity can be confirmed that the air sterilizer of the present invention has a very good sterilizing power.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

<Explanation of symbols for the main parts of the drawings>
110: case 111: inlet
(112): outlet 120: base panel
(121): guide 1211, 1212: guide plate
130: sterilization unit (131): UV-C lamp
(132): aluminum cell 1321: photocatalyst coating layer
(133): frame 140: fan unit
150: control circuit unit 160: reflector plate
160a: Reflective Surface 161: First Reflector
162: second reflecting portion

Claims (6)

A case 110 having an inlet 111 through which air is introduced, and having an outlet 112 through which the treated air escapes;
It is connected to the inlet 111 is provided with a guide 121 for guiding the air flowing into the interior of the case 110 through the inlet 111 to the outlet 112 side, which is mounted inside the case 110 Base panel 120;
A UV-C lamp 131 for generating ultraviolet rays having a wavelength region of 100 to 280 nm, and a hole 1322 through which the UV-C lamp 131 penetrates are formed in a central portion thereof, and silver-copper-rhodium-dioxide is formed. The photocatalyst coating layer 1321 made of titanium-nickel is formed on a surface thereof, and a plurality of aluminum cells 132 are installed to maintain a constant distance with the UV-C lamp 131 and the UV-C lamp. It is composed of a frame 133 that supports the 131 and the aluminum cell 132 and is fixed to the base panel 120 and located on the inlet 111 side in the flow passage formed by the guide 121. A sterilization unit 130 installed at 120 to sterilize air using a photocatalyst activated by ultraviolet rays and ultraviolet rays;
A fan unit 140 installed in the base panel 120 to flow air;
A control circuit unit 150 installed on the base panel 120 to control the sterilization unit 130 and the fan unit 140; And
It is installed in the flow passage, and has a reflecting surface 160a for reflecting the ultraviolet rays generated by the sterilization unit 130 to diffuse in the flow passage, blocking a part of the flow passage at the rear end of the sterilization unit 130 Air sterilizer, characterized in that consisting of a reflector 160 to temporarily stagnant air in the vicinity of the sterilization unit 130 through the flow passage. The method of claim 1, wherein the reflecting plate 160,
A first reflector 161 disposed between the sterilization unit 130 and the base panel 120 and fixed to the base panel 120, and a base panel 120 at an end of the first reflector 161. Air sterilizer, characterized in that consisting of a second reflector (162) is bent upright from) to block a portion of the flow passage. delete The method of claim 1, wherein the guide 121,
A first region A1 connected to the inlet 111 and formed with two guide plates 1211 and 1212 spaced apart at regular intervals to provide a constant flow area; And
Air extending from the first area (A1) to the outlet 112, characterized in that composed of a second area (A2) is formed so that the interval between the two guide plate (1211, 1212) is gradually separated sterilizer. The method of claim 1, wherein the fan unit 140,
Air sterilizer having a rotation axis parallel to the base panel 120, consisting of a sirocco fan having a structure extending from one side of the outlet 112 to the other side. The method of claim 1,
It is installed to block the flow passage at the rear end of the reflecting plate 160, the auxiliary reflecting plate 170 is provided with a plurality of flow holes 171 to enable the communication of air is further provided,
The plurality of flow holes 163 are formed in the reflecting plate 160,
Air flow sterilizer, characterized in that the flow hole 171 of the auxiliary reflecting plate 170 and the flow hole (163) of the reflecting plate 160 is formed in a mutually offset position.

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