KR102515122B1 - Sterilization device using far ultraviolet ray - Google Patents

Abstract

A sterilization device using far ultraviolet rays according to an embodiment of the present invention comprises: a main body; a power supply unit integrally formed with or separated from the main body; and a sterilization unit operated by an operation signal transmitted from the main body and the power supplied from the power supply unit, wherein the sterilization unit may irradiate the far ultraviolet rays toward an object to be sterilized.

Description

Sterilization device using deep ultraviolet rays {STERILIZATION DEVICE USING FAR ULTRAVIOLET RAY}

The present invention relates to a sterilization device using far-ultraviolet rays, and more particularly, to a sterilization device using far-ultraviolet rays that selectively uses only specific far-ultraviolet rays acting on objects to be sterilized, such as viruses.

Violet ray can be classified into UV-A (315 ~ 400 nm), UV-B (280 ~ 315 nm), and UV-C (100 ~ 280 nm) according to the distribution of the spectrum.

Recently, a device for sterilizing viruses and the like using ultraviolet rays has been used. In particular, many studies and devices to use ultraviolet rays for sterilization of the Corona 19 virus are being introduced.

However, while UV rays have excellent sterilization effects due to their characteristics, there is a problem that they are harmful to the human body. For example, UV-B with a wavelength of 254 nm has an excellent virus sterilization effect, but when irradiated to the human skin, it causes skin cancer and penetrates to the upper epidermal layer or basal cell layer of the skin, and when irradiated to the eyes, There are problems causing cataracts and corneal damage.

In addition, ultraviolet rays with a wavelength of 300 nm cause DNA mutation in the basal layer of the skin when irradiated to the human skin, and cause DNA mutation and penetration into the germinal layer of the lens after penetrating the lens when irradiated to the human eye. can

On the other hand, far ultraviolet rays having a wavelength of 222 nm among UV-C have almost the same sterilizing ability as UV-B and are not harmful to the human body. Deep ultraviolet rays of 222 nm are absorbed in the outermost stratum corneum of the human skin, but do not induce UV-related mutations in keratinocytes and do not damage the skin.

Therefore, there is a growing need for a technology or device capable of sterilizing viruses and the like by selectively using only deep ultraviolet rays having harmless wavelengths to the human body.

The present applicant has proposed the present invention in order to solve the above problems.

Korean Registered Patent No. 10-2233270 (registered on March 23, 2021)

The present invention has been proposed to solve the above problems, and among the deep ultraviolet rays irradiated by a germicidal lamp, only the deep ultraviolet rays of 222 nm harmless to the human body are selectively transmitted and the deep ultraviolet rays having other wavelengths are not transmitted. It aims at providing the used sterilization apparatus.

A sterilization device using far ultraviolet rays according to an embodiment of the present invention for achieving the above object includes a main body; a power supply unit integrally formed with or separated from the main body; and a sterilization unit operated by an operation signal transmitted from the main body and power supplied from the power supply unit, wherein the sterilization unit may irradiate far ultraviolet rays toward an object to be sterilized.

The sterilization unit includes a housing having an accommodation space formed therein and an opening formed at a lower side; a germicidal lamp provided inside the housing to be located in the receiving space; and a sterilizing light transmission unit provided to shield the opening, wherein the sterilization light transmission unit selectively transmits only far ultraviolet rays that act on the object to be sterilized or sterilize the object to be sterilized among the far ultraviolet rays irradiated from the sterilization lamp. can make it

The sterilization light transmission unit includes a light transmission layer and an optical filter layer formed on at least one surface of an upper and lower surface of the light transmission layer, and the optical filter layer acts on the object to be sterilized among the far ultraviolet rays emitted from the sterilization lamp or the blood Only far ultraviolet rays having a wavelength band for sterilizing the object to be sterilized can be selectively transmitted.

The optical filter layer may transmit only far ultraviolet rays having a wavelength of 215 to 230 nm among the far ultraviolet rays.

The light-transmitting layer may be formed of any one of fused silica, calcium fluoride, or lanthanum trifluoride.

The optical filter layer may be formed of at least one of aluminum oxide and magnesium fluoride.

The optical filter layer may include a first optical filter layer and a second optical filter layer respectively formed on upper and lower surfaces of the light transmitting layer, and the optical depth of the first optical filter layer is smaller than the optical depth of the second optical filter layer. can

The second optical filter layer may be formed to have a greater thickness than the first optical filter layer or may be formed to increase the number of depositions of at least one of aluminum oxide and magnesium fluoride.

A cooling fan is formed in the housing to introduce external air of the housing into the accommodating space, and the external air introduced into the accommodating space by the cooling fan cools the sterilization lamp or is sterilized by the sterilization lamp. It may be discharged to the outside of the housing.

A reflecting part may be formed between the ceiling of the housing and the germicidal lamp, or a light collecting part may be formed between the germicidal lamp and the germicidal light transmitting part.

In the sterilization device using far-ultraviolet rays according to an embodiment of the present invention, ultraviolet rays having a wavelength band harmful to the human body are blocked while the deep-ultraviolet rays irradiated from the sterilization lamp pass through the multi-layered sterilization light penetrating part, so that the user is exposed to harmful ultraviolet rays. can prevent it from happening.

In the sterilization device using far ultraviolet rays according to an embodiment of the present invention, only the far ultraviolet rays having a wavelength of 222 nm among the far ultraviolet rays irradiated from a sterilization lamp are sterilized by using an optical filter layer laminated on at least one surface of the upper and lower surfaces of the light transmitting layer. Sterilization can be performed without harming the user's health by allowing it to reach the object.

In the sterilization device using far ultraviolet rays according to an embodiment of the present invention, by using at least one of a reflector and a light collector, sterilization performance can be improved by increasing the amount or intensity of far ultraviolet rays reaching or acting on an object to be sterilized.

A sterilization device using far ultraviolet rays according to an embodiment of the present invention can provide a customized sterilization function for each user by storing and analyzing various types of information about a usage state or usage history.

1 is a diagram showing a sterilization device using far ultraviolet rays according to an embodiment of the present invention.
FIG. 2 is a view showing a sterilization unit of the sterilization apparatus using far ultraviolet rays according to FIG. 1 .
Figure 3 is a view showing the bottom of the sterilization unit according to Figure 2;
Figure 4 is a view showing the inside of the sterilization unit according to Figure 2;
5 is a cross-sectional view illustrating a sterilizing light transmitting part of the sterilizing unit according to FIG. 2 .
6 and 7 are graphs showing experimental results for a wavelength band of sterilizing light passing through the sterilizing light transmission unit according to FIG. 5 .
FIG. 8 is an interior view of a variant of the sterilization unit according to FIG. 2 .
FIG. 9 is a view showing another modified example of the sterilization unit according to FIG. 2 .
FIG. 10 is a view for explaining a control operation of the sterilization apparatus using far ultraviolet rays according to FIG. 1 .

Advantages and/or features of the present invention, and methods of achieving them, will become apparent with reference to the following detailed description of the embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various forms different from each other, only these embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention pertains. It is provided to completely inform the person who has the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification.

In addition, preferred embodiments of the present invention to be carried out below are provided in each system function configuration in order to efficiently explain the technical components constituting the present invention, or system functions commonly provided in the technical field to which the present invention belongs. The configuration is omitted as much as possible, and the functional configuration that should be additionally provided for the present invention will be mainly described. If one of ordinary skill in the art to which the present invention pertains, one will be able to easily understand the functions of conventionally used components among the omitted functional configurations not shown below, and also the omitted configurations as described above. The relationship between elements and components added for the present invention will also be clearly understood.

In addition, in the following description, "transmission", "communication", "transmission", "reception" and other similar terms of signals or information refer to direct transmission of signals or information from one component to another. as well as passing through other components. In particular, "transmitting" or "transmitting" a signal or information as a component indicates the final destination of the signal or information, and does not mean a direct destination. The same is true for "reception" of signals or information.

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

1 is a view showing a sterilization device using far ultraviolet rays according to an embodiment of the present invention, FIG. 2 is a view showing a sterilization unit of the sterilization device using far ultraviolet rays according to FIG. 1, and FIG. 3 is a view showing a sterilization unit according to FIG. FIG. 4 is a view showing the inside of the sterilization unit according to FIG. 2, FIG. 5 is a cross-sectional view showing a sterilizing light transmitting part of the sterilization unit according to FIG. 2, and FIGS. 6 and 7 are drawings A graph showing the experimental results of the wavelength band of the sterilizing light passing through the sterilizing light transmission unit according to 5, FIG. 8 is a view showing the inside of a modified example of the sterilizing unit according to FIG. 2, and FIG. 9 is another view of the sterilizing unit according to FIG. 2 FIG. 10 is a view showing a modified example, and is a view for explaining a control operation of the sterilization device using far ultraviolet rays according to FIG. 1 .

As shown in FIG. 1, a sterilization device (100, hereinafter referred to as 'sterilization device') using far ultraviolet rays according to an embodiment of the present invention is a portable/mobile sterilization capable of sterilizing or sterilizing viruses using far ultraviolet rays. It is a device.

Referring to Figure 1, the sterilization device 100 according to an embodiment of the present invention, the main body 110; A power supply unit 130 integrally formed with or separated from the main body 110; and a sterilization unit 200 operated by an operation signal transmitted from the main body 110 and power supplied from the power supply unit 130, wherein the sterilization unit 200 emits far ultraviolet rays toward an object to be sterilized. can be investigated

The sterilization unit 200 of the sterilization device 100 according to an embodiment of the present invention sterilizes viruses including the Corona 19 virus using far ultraviolet (UV-C), but selectively only uses deep ultraviolet rays of a specific wavelength harmless to the human body. use

The sterilization device 100 according to an embodiment of the present invention may include a main body 110, a power supply unit 130, and a sterilization unit 200. The main body 110 may input commands related to the operating state of the sterilization unit 200 or output the operating state.

As shown in FIG. 1, the main body 110 preferably has a hexahedral shape, but there is no particular restriction on the shape. Since the sterilization device 100 according to an embodiment of the present invention should have portability and mobility, the main body 110 is light and a hand grip 112 or a portable band (not shown) may be connected.

A display unit 114 may be formed on one surface of the main body 110 to display various types of information related to the operation or operation of the sterilization unit 200 . Various electronic components may be installed inside the main body 110, including a controller 310 to be described later. These electronic components generate heat during operation, and a ventilation port 116 may be formed in the main body 110 to dissipate or cool the electronic components.

The power supply unit 130 is a part that supplies power necessary for the operation of the sterilization unit 200, and the power supply unit 130 may be integrally formed with the main body 110 or may be formed separately. Since the sterilization device 100 according to an embodiment of the present invention includes the power supply unit 130 for supplying power to the sterilization unit 200, a power cable is connected to the external power supply terminal for the operation of the sterilization unit 200. no need to connect

The power supply unit 130 includes a secondary battery, and when the sterilization device 100 is not used, a separate charging cable (not shown) is used to connect the power supply unit 130 and an external power supply terminal to the power supply unit 130. of secondary batteries can be charged. In addition, the power supply unit 130 may charge the secondary battery using a wireless charging method.

The sterilization unit 200 may be connected to the body 110 or the power supply unit 130 through a cable 140. The cable 140 connecting the sterilization unit 200 and the main body 110 or the power supply unit 130 is preferably provided so that the length can be adjusted.

The sterilization unit 200 is the most important part of the sterilization device 100, and may include a housing 230 and a handle 210. The user grabs the handle 210 of the sterilization unit 200 with his hand while carrying the main body 110 on his shoulder, and directs the lower surface of the housing 230 toward the object to be sterilized to carry out the sterilization operation.

2 to 4, the sterilization unit 200 of the sterilization device 100 according to an embodiment of the present invention has a receiving space 233 formed therein and an opening 231 on the lower side (one side) formed housing 230; a germicidal lamp 250 provided inside the housing 230 so as to be located in the accommodation space 233; and a sterilizing light transmission unit 270 provided to shield the opening 231 .

Here, the sterilization light transmission unit 270 may selectively transmit only the far ultraviolet rays that act on the object to be sterilized or sterilize the object to be sterilized among the far ultraviolet rays irradiated by the sterilization lamp 250 .

The housing 230 is a member for accommodating the germicidal lamp 250 therein, and the remaining portion except for the opening 231 at the lower end is preferably formed to be opaque. In order to prevent far ultraviolet rays irradiated from the germicidal lamp 250 from affecting the eyes of a worker or a user, the housing 230, except for the opening 231, is opaque or formed of a material that does not transmit ultraviolet rays. desirable.

As shown in FIG. 2 , in order to prevent a hand from contacting an object to be sterilized when a worker or a user holds the handle 210 and performs sterilization work, the handle 210 is a point inclined upward of the housing 230. It can be connected to the housing 230 in.

The housing 230 is preferably provided in a form that widens toward the lower end where the opening 231 is formed so that far ultraviolet rays irradiated from the sterilizing lamp 250 pass through the opening 231 and reach the object to be sterilized.

The germicidal lamp 250 is installed in the accommodating space 233 of the housing 230, and may be installed in the accommodating space 233 in a form long disposed in a direction parallel to the handle 210.

As the germicidal lamp 250, an excimer lamp, which is a type of lamp using dielectric barrier discharge, may be used. The germicidal lamp 250 provided as an excimer lamp does not require a preheating time, can be instantaneously turned on, and can immediately reach a lamp illumination of 96% to 100%.

Referring to FIG. 3, the germicidal lamp 250 includes a base 252 coupled to both ends in the longitudinal direction and receives power from the power supply unit 130 through a wire 212 connected to one end of the base 252. do. Here, the wire 212 may pass through the inside of the handle 210 and be connected to the cable 140 .

When power (power) is supplied to the sterilization lamp 250, the electrode 252 (see FIG. 4) located inside the sterilization lamp 250 emits and irradiates far ultraviolet rays while light is emitted. The sterilization lamp 250 Far ultraviolet rays are irradiated through the entire cylindrical glass tube. In order for the sterilization unit 200 to have high sterilization performance, the amount of far ultraviolet light emitted to the outside through the opening 231 located below the sterilization lamp 250 should be large. To this end, the housing 230 preferably has a shape extending toward the opening 231 from the ceiling 235 as shown in FIG. 4 .

In addition, by forming the ceiling 235 of the housing 230 in a curved surface, far ultraviolet rays irradiated upward from the germicidal lamp 250 may be reflected from the ceiling 235 and pass through the opening 231 .

When power is supplied to the sterilization lamp 250, far ultraviolet rays are irradiated, and in this process, the temperature of the sterilization lamp 250 rises. In order to prevent damage to the sterilizing lamp 250 and to prevent a user or the like from touching the sterilizing lamp 250, the opening 231 of the housing 230 does not remain open but is opened by the sterilizing light transmitting portion 270 ( 231) is shielded. Accordingly, the accommodating space 233 of the housing 230 in which the sterilizing lamp 250 is located is almost closed.

In this way, since the heat generated from the germicidal lamp 250 in the almost closed accommodation space 233 cannot escape to the outside of the accommodation space 233, the temperature of the accommodation space 233 rises, and this temperature rise The performance of the germicidal lamp 250 may be adversely affected.

In order to discharge heat generated in the accommodation space 233 or cool the sterilization lamp 250, the air flow hole 228 communicating with the outside of the housing 230 and the accommodation space 233 of the housing 230 is provided in the housing ( 230) can be formed.

In addition, the housing 230 of the sterilization device 100 according to an embodiment of the present invention has a cooling fan for cooling the sterilization lamp 250 or discharging heat from the accommodation space 233 to the outside of the housing 230. (220) may be formed.

Referring to FIGS. 2 and 3 , a ventilation passage 226 in which a cooling fan 220 is installed may be formed in the housing 230 . The ventilation passage 226 is a passage that communicates the outside of the housing 230 with the receiving space 233 and may be formed at a position facing the air flow hole 228 .

The external air of the housing 230 can be introduced into the accommodation space 233 by the cooling fan 220 installed in the ventilation passage 226, and the external air introduced into the accommodation space 233 can be supplied to the sterilizing lamp 250. ) After cooling, it may be discharged to the outside of the housing 230 through the air flow hole 228 . At this time, the external air introduced into the accommodating space 233 by the cooling fan 220 can cool the sterilizing lamp 250 while circulating in the accommodating space 233. can be sterilized by

Therefore, the external air introduced into the accommodation space 233 by the cooling fan 220 cools the sterilizing lamp 250, and the external air passes through the air flow hole 228 in a sterilized state by the sterilizing lamp 250. Through this, it can be discharged to the outside of the housing 230.

As such, a cooling fan 220 is formed in the housing 230 to introduce external air of the housing 230 into the accommodating space 233, and the external air introduced into the accommodating space 233 by the cooling fan 220 may be discharged to the outside of the housing 230 after cooling the sterilizing lamp 250 or being sterilized by the sterilizing lamp 250 .

At this time, the sterilization device 100 according to an embodiment of the present invention may control the operating state of the cooling fan 220 by the control unit 310 provided on the main body 110 . This will be described later.

Meanwhile, the opening 231 of the housing 230 is shielded by the sterilizing light transmitting part 270 . The germicidal light transmission unit 270 may protect the germicidal lamp 250 by shielding the opening 231 and prevent a user from touching the germicidal lamp 250 . The germicidal light transmission unit 270 should be capable of shielding the opening 231 and at the same time sending far ultraviolet rays irradiated from the germicidal lamp 250 to the outside of the housing 230 . Therefore, the germicidal light transmission unit 270 should be made of a material having light transmission properties.

Here, the sterilizing light transmitting unit 270 sterilizes the object to be sterilized or selectively transmits only far ultraviolet rays acting on the object to be sterilized. In the sterilization device 100 according to an embodiment of the present invention, the sterilization light is an object to be sterilized (meaning a virus such as the Corona 19 virus or a harmful substance requiring sterilization) among far ultraviolet rays irradiated by a sterilization lamp 250. It means far-ultraviolet rays having a specific wavelength that sterilizes.

The sterilizing light transmission unit 270 of the sterilization device 100 according to an embodiment of the present invention effectively sterilizes the object to be sterilized among the far ultraviolet rays irradiated by the sterilization lamp 250 of the sterilization unit 200, and at the same time including the user. It can only transmit far ultraviolet rays (sterilization light) of a specific wavelength that does not cause damage to humans (human body), and does not transmit far ultraviolet rays of other wavelengths except for the germicidal light.

To this end, as shown in FIG. 5 , the germicidal light transmission unit 270 according to an embodiment of the present invention may have a multi-layer structure.

As shown in FIG. 5 , the germicidal light transmitting unit 270 may include a light transmitting layer 271 and optical filter layers 273 and 275 formed on at least one of upper and lower surfaces of the light transmitting layer 271 .

The light-transmitting layer 271 is a base member of the sterilizing light-transmitting part 270, that is, a layer serving as a skeleton. The light transmission layer 271 is preferably formed of a relatively hard material. The light-transmitting layer 271 has a light-transmitting property through which far-ultraviolet rays irradiated from the germicidal lamp 250 are all transmitted regardless of wavelength.

The light transmission layer 271 may be formed of any one of fused silica, calcium fluoride (CaF ₂ ), and lanthanum trifluoride (LaF ₃ ).

When the light transmission layer 271 is formed of fused silica, the fused silica is preferably UV grade fused silica. The refractive index of fused silica is 1.51334.

The reason why the sterilizing light transmitting unit 270 selectively transmits far ultraviolet rays having a specific wavelength, that is, sterilizing light, and does not transmit far ultraviolet rays having other wavelengths is due to the light filter layers 273 and 275 .

The optical filter layers 273 and 275 selectively transmit only far ultraviolet rays (i.e., sterilizing light) having a wavelength band that acts on or sterilizes the object to be sterilized among the far ultraviolet rays irradiated from the sterilization lamp 250, and transmits the other wavelengths UV rays can be blocked so that they do not penetrate.

In the sterilization device 100 according to an embodiment of the present invention, the optical filter layers 273 and 275 may transmit only far ultraviolet rays having a wavelength of 215 to 230 nm among far ultraviolet rays irradiated from the sterilization lamp 250. Preferably, the light filter layers 273 and 275 transmit only far ultraviolet rays having a wavelength of 222 nm among the far ultraviolet rays emitted from the sterilization lamp 250 and do not transmit far ultraviolet rays of other wavelengths. That is, the sterilization light used by the sterilization device 100 according to an embodiment of the present invention for sterilization of an object to be sterilized is preferably a 222 nm deep ultraviolet ray.

The optical filter layers 273 and 275 may be formed of at least one of aluminum oxide (Al ₂ O ₃ ) and magnesium fluoride (MgF ₂ ).

The optical filter layers 273 and 275 may include a first optical filter layer 273 and a second optical filter layer 275 respectively formed on the upper and lower surfaces of the light transmitting layer 271 . Here, the first optical filter layer 273 formed on the upper surface of the light transmitting layer 271 is located on the side of the sterilizing lamp 250, and the second optical filter layer 275 formed on the lower surface of the light transmitting layer 271 is the sterilizing lamp It is located on the opposite side of (250).

As described above, in the first optical filter layer 273 and the second optical filter layer 275, at least one of aluminum oxide (Al ₂ O ₃ ) and magnesium fluoride (MgF ₂ ) is repeatedly applied to the surface of the light transmitting layer 271 . It can be deposited on and formed. For the first optical filter layer 273 and the second optical filter layer 275, either aluminum oxide (Al ₂ O ₃ ) or magnesium fluoride (MgF ₂ ) is repeatedly deposited on the surface of the light-transmitting layer 271, or Both aluminum oxide (Al ₂ O ₃ ) and magnesium fluoride (MgF ₂ ) may be deposited on the surface of the light transmission layer 271 to be formed.

The refractive index of aluminum oxide (Al ₂ O ₃ ) is 1.73310, and the refractive index of magnesium fluoride (MgF ₂ ) is 1.41170. That is, aluminum oxide (Al ₂ O ₃ ) has a relatively high refractive index, and magnesium fluoride (MgF ₂ ) has a relatively low refractive index.

In this case, the optical thickness of the first optical filter layer 273 may be smaller than that of the second optical filter layer 275 . Optical depth is a measure of transparency.

The optical depth of the first optical filter layer 273 formed by depositing both aluminum oxide (Al ₂ O ₃ ) and magnesium fluoride (MgF ₂ ) is 14.93947148, and aluminum oxide (Al ₂ O ₃ ) and magnesium fluoride (MgF ₂ ) are The optical depth of the second optical filter layer 275 formed by depositing all of them is 36.16540844.

In addition, the second optical filter layer 275 is formed to have a greater thickness than the first optical filter layer 273 or to increase the number of depositions of at least one of aluminum oxide (Al ₂ O ₃ ) and magnesium fluoride (MgF ₂ ). It can be. The second optical filter layer 275 may have a thickness of 5623.39 nm or may be formed by depositing aluminum oxide (Al ₂ O ₃ ) and magnesium fluoride (MgF ₂ ) 132 times (132 layers). On the other hand, the first optical filter layer 273 may have a thickness of 1954.81 nm or may be formed by depositing aluminum oxide (Al ₂ O ₃ ) and magnesium fluoride (MgF ₂ ) 60 times (60 layers).

The inventors of the present application are materials or conditions of the light filter layers 273 and 275 that transmit only far ultraviolet rays having a wavelength of 215 to 230 nm, preferably far ultraviolet rays having a wavelength of 222 nm, among the far ultraviolet rays irradiated by the sterilizing lamp 250. Repeated experiments and tests were conducted to find out.

Experimental results are shown in FIGS. 6 and 7 . In FIGS. 6 and 7 , the X-axis represents the wavelength (nm) of far-ultraviolet rays, and the Y-axis represents the transmittance (T: Transmittance, %) of far-ultraviolet rays.

6(a) shows the results of the far ultraviolet transmission experiment for the germicidal light transmission part 270 including the light filter layers 273 and 275 in which aluminum oxide is deposited 206 times on the light transmission layer 271 formed of fused silica. indicates According to (a) of FIG. 6, it can be seen that 84% of the far ultraviolet rays of 222 nm are transmitted, while 4.5% of the far ultraviolet rays of 230 nm are transmitted.

FIG. 6(b) shows the far ultraviolet ray transmission test results for the sterilizing light transmission part 270 including the light filter layers 273 and 275 in which aluminum oxide is deposited 240 times on the light transmission layer 271 formed of fused silica. indicates According to (b) of FIG. 6, it can be seen that far ultraviolet rays of 222 nm are transmitted by 50%, while far ultraviolet rays of 230 nm are transmitted by 0.1%. It was found that the transmittance of 222 nm far ultraviolet rays was lower in the case of (b) than in the case of (a).

6(c) shows an optical filter layer in which magnesium fluoride is deposited 60 times (60 layers) on the light transmission layer 271 formed of lanthanum trifluoride (LaF3) instead of fused silica in order to increase the transmittance of 222 nm deep ultraviolet rays. The results of the far ultraviolet ray transmission test for the sterilizing light transmission unit 270 including (273,275) are shown. According to (c) of FIG. 6, it can be seen that 70% of the far ultraviolet rays of 222 nm are transmitted, while 3% of the far ultraviolet rays of 230 nm are transmitted.

On the other hand, when the deep ultraviolet rays irradiated from the germicidal lamp 250 are deep ultraviolet rays having a very short wavelength, the light-transmitting layer 271 formed of fused silica has a low refractive index, so that the deposition material, that is, the optical filter layers 273 and 275 may cause friction with the material (aluminum oxide or magnesium fluoride) that forms it. Therefore, when deep ultraviolet rays are transmitted, the light transmission layer 271 is preferably formed of calcium fluoride (CaF ₂ ).

6(d) shows a sterilizing light transmission part including light filter layers 273 and 275 in which magnesium fluoride is deposited 50 times (50 layers) on the light transmission layer 271 formed of calcium fluoride (CaF ₂ ) instead of fused silica ( 270) shows the far-ultraviolet transmission test results. According to (d) of FIG. 6, it can be seen that 71% of the far ultraviolet rays of 222 nm are transmitted, while 0.6% of the far ultraviolet rays of 230 nm are transmitted.

As described above, as a result of repetitive experiments and tests, the inventors of the present application have found that, when the optical filter layers 273 and 275 are formed of at least one of aluminum oxide (Al ₂ O ₃ ) and magnesium fluoride (MgF ₂ ), FIG. As shown in (a) and (b), it was found that far ultraviolet rays having a wavelength of 215 to 230 nm were selectively transmitted. Therefore, in the sterilization device 100 according to an embodiment of the present invention, at least one of aluminum oxide (Al ₂ O ₃ ) and magnesium fluoride (MgF ₂ ) is deposited on the surface of the light-transmitting layer 271 as a sterilizing light transmission unit. By using (270), it is possible to sterilize an object to be sterilized by selectively transmitting only deep ultraviolet rays having a wavelength of 222 nm.

8 shows a modified example of the sterilization unit 200 of the sterilization device 100 according to an embodiment of the present invention. Referring to FIG. 8 , a reflector 281 may be formed between the ceiling 235 of the housing 281 and the germicidal lamp 250 .

The reflector 281 may be provided as a parabolic mirror formed between the germicidal lamp 250 and the ceiling 235 of the housing 230 . Far ultraviolet rays irradiated from above the germicidal lamp 250 toward the ceiling 235 may be reflected by the reflector 281 and directed toward the opening 231 . The reflector 281 can increase the amount of far ultraviolet light passing through the opening 231 and the sterilizing light transmission part 270, and accordingly, the amount of far ultraviolet light of 222 nm also increases, so that the sterilization effect can be enhanced.

In addition, as shown in FIG. 8 , a light collecting unit 291 may be formed between the germicidal lamp 250 and the germicidal light transmission unit 270 . The light collecting unit 291 may be provided in the accommodation space 233 by a fixing member 293 connected to the inner surface of the housing 230 .

The condensing unit 290 may be provided in the form of a condensing lens. Since the far ultraviolet ray emitted from the sterilization lamp 250 towards the opening 231 is irradiated in a spread form, the intensity of the 222 nm far ultraviolet ray reaching the object to be sterilized may not be large. If the intensity of far ultraviolet sterilization light is not high, the sterilization effect may be reduced. In order to solve this problem, by forming a light collecting unit 290 in the form of a condensing lens between the sterilizing lamp 250 and the sterilizing light transmission unit 270, far ultraviolet rays are collected while passing through the light collecting unit 290, thereby increasing the intensity of the sterilizing light. will grow

The sterilization device 100 according to an embodiment of the present invention can increase the sterilization effect by 222 nm deep ultraviolet rays by providing at least one of the reflector 281 and the light collector 290 in the housing 230.

In addition, referring to FIG. 8 , a distance measuring unit 296 for measuring the distance between the object to be sterilized and the germicidal lamp 250 may be formed on the lower surface of the housing 230 or the outer surface of the opening 231 . Since the deep ultraviolet rays (sterilization light) of 222 nm that pass through the far ultraviolet ray irradiated from the sterilization lamp 250 or the sterilization light penetrating part 270 are spread and irradiated, the greater the distance between the objects to be sterilized by the sterilization lamp 250 The amount of sterilizing light reaching the object to be sterilized is inevitably reduced.

The sterilization device 100 according to an embodiment of the present invention measures the distance between the sterilization lamp 250 and the object to be sterilized using the distance measurement unit 296 and informs the user of the measured distance, so that the user can It is possible to maintain a distance that can increase the sterilization effect of the object.

9 shows another modification of the sterilization unit 200 used in the sterilization device 100 according to an embodiment of the present invention.

Referring to FIG. 9 , the sterilization unit 200 according to the modified example may include a housing 230-1 and a handle 210-1. Here, the shape of the housing 230-1 is almost similar to the housing 230 shown in FIG. That is, the germicidal lamp 250-1 and the germicidal light transmitting part 270-1 may be formed in the accommodation space 233-1 formed inside the housing 230-1. However, there is a difference from the housing 230 shown in FIG. 2 in that the size of the accommodating space 233-1 and the size of the germicidal lamp 250-1 are almost similar.

In addition, in order to cool the sterilization lamp 250-1 or to discharge heat from the receiving space 233-1, the housing 230-1 is penetrated through the parts corresponding to both ends in the longitudinal direction of the sterilization lamp 250-1. A first air flow hole 226-1 and a second air flow hole 226-2 may be formed. The first air flow hole 226-1 and the second air flow hole 226-2 are formed to communicate with the receiving space 233-1 and the outside of the housing 230-1, respectively, and the housing 230-1 The external air of 1) enters the accommodation space 233-1 through the first air flow hole 226-1 to cool the sterilizing lamp 250-1, and then passes through the second air flow hole 226-2. Through this, it can be discharged to the outside of the housing 230-1. At this time, the outside air introduced into the accommodating space 233-1 through the first air flow hole 226-1 cools the sterilizing lamp 250-1, and the outside air is supplied by the sterilizing lamp 250-1. In a sterilized state, it may be discharged to the outside of the housing 230-1 through the second air flow hole 226-2.

Meanwhile, the outside air of the housing 230-1 flows into the accommodation space 233-1 through the second air flow hole 226-2, cools the sterilization lamp 250-1, and at the same time sterilizes the lamp 250-1. External air sterilized by 1) may be discharged to the outside of the housing 230-1 through the first air flow hole 226-1.

A reflector 281-1 in the form of a parabolic mirror is provided above the germicidal lamp 250-1 to transmit far ultraviolet rays irradiated upward from the germicidal lamp 250-1 to the germicidal light transmitting part 270-1. ) can be reflected.

The structure of the sterilizing light transmitting unit 270-1 is the same as that of the sterilizing light transmitting unit 270 shown in FIG.

Meanwhile, in the sterilization device 100 according to an embodiment of the present invention, various operations, operations, and functions may be controlled using the control unit 310 as shown in FIG. 10 .

As described above, the control unit 310 may be provided in the main body 110 of the sterilization device 100, and may be provided in the form of a device installed on a PCB, a chip, or a microcomputer. In addition, the main body 110 of the sterilization device 100 may be provided with a communication unit 320, a storage unit 330, and an analysis unit 340.

The communication unit 320 may send and receive data while communicating with a user's smartphone or communicating with other sterilization devices 100 using various wireless communication methods. For example, the control unit 310 may send a guide on the progress of the sterilization operation and the scheduled completion date of the sterilization operation to the smartphone of the customer who has requested the sterilization operation through the communication unit 320, and information on the scheduled date of the next sterilization operation. can also be sent.

The controller 310 informs the worker (user) of the remaining battery power of the power supply unit 130 through the input/output unit 114, or the temperature of the sterilizing lamp 250, the size of power supplied to the sterilizing lamp 250, and the sterilizing lamp ( 250), and the operator can adjust the operating time of the sterilization device 100 using information displayed on the input/output unit 114.

In addition, the control unit 310 may determine whether cooling of the germicidal lamp 250 is necessary using the operation time of the germicidal lamp 250, the magnitude of power supplied to the germicidal lamp 250, and the like, and determines that cooling is necessary. In this case, the fan driving unit 240 connected to the cooling fan 220 may be operated.

The control unit 310 may also control the fan driving unit 240 to operate while the sterilizing lamp 250 is operating, but even when the temperature of the sterilizing lamp 250 is not high or the operating time is short, the fan driving unit 240 operates. There may be a problem of unnecessarily consuming the battery charge of the power supply unit 130 . Therefore, the control unit 310 predicts the temperature of the sterilizing lamp 250 and gives an operating command to the fan driving unit 240 to drive the cooling fan 220 only when cooling is required, thereby preventing unnecessary power consumption and preventing unnecessary power consumption. 130) can be extended.

In addition, the controller 310 may control the operation or state of the power supply unit 130 that supplies power to the sterilizing lamp 250 or the operating state of the cooling fan 220 . Control of the operating state of the cooling fan 220 may be implemented through control of the fan driving unit 240 as described above.

The control unit 310 monitors the remaining battery charge of the power supply unit 130 and, when the remaining charge falls below the reference value, gives an alarm to the operator through the input/output unit 114 or sends an alarm to the operator's smartphone through the communication unit 320. can transmit For example, a message indicating that the power supply unit 130 needs to be charged may be transmitted, or a time available for sterilization may be notified when the current state of use is continued.

Also, the control unit 310 may control the operation of the lamp driving unit 260 that drives the sterilization lamp 250 . The control unit 310 may determine the operating state of the germicidal lamp 250 using the operation time of the germicidal lamp 250, the amount of power supplied, and the like, and transmit a control command accordingly to the lamp driver 260. For example, when the power supplied to the germicidal lamp 250 is high, a command may be transmitted to the lamp driver 260 to lower the output of the germicidal lamp 250 .

The control unit 310 may control power supplied to the germicidal lamp 250 using the distance measured by the distance measuring unit 296 . For example, when the distance measured by the distance measuring unit 296 is smaller than the reference value, the control unit 310 transmits a command to the lamp driving unit 260 to reduce the intensity of far ultraviolet rays emitted from the germicidal lamp 250, or , When the measured distance is greater than the reference value, the power supply unit 130 or the lamp driving unit 260 may be controlled to increase power supplied to the germicidal lamp 250 . In addition, when the measured distance is greater than the reference value, the control unit 310 displays this information on the input/output unit 114 to inform the operator, so that the operator can bring the sterilization unit 200 close to the object to be sterilized.

The storage unit 330 is a database, and various information or data related to the operation or use of the sterilization device 100 may be stored. The storage unit 330 may convert stored information or data into big data and manage them, and such big data may be transmitted to the analysis unit 340 or the control unit 310 .

The analysis unit 340 analyzes the usage pattern of the sterilization device 100 for each operator or user using various data or big data stored in the storage unit 330, or analyzes the conditions for obtaining the best sterilization effect, so that the operator or user You can inform the user.

As described above, the sterilization device 100 according to an embodiment of the present invention includes a control unit 310 to provide a customized sterilization function for each user or work environment, thereby increasing the efficiency of the sterilization operation, and the sterilization device 100 ) can be extended and the sterilization device 100 can be used in the best condition.

As described above, the embodiments of the present invention have been described with specific details such as specific components and limited embodiments and drawings, but these are provided only to help a more general understanding of the present invention, and the present invention is limited to the above embodiments. It is not, and those skilled in the art can make various modifications and variations from these descriptions. Therefore, the spirit of the present invention should not be limited to the described embodiments and should not be determined, and all things equivalent or equivalent to the claims as well as the following claims belong to the scope of the present invention.

100: sterilization device using deep ultraviolet rays
110: body 130: power supply
140: cable 200: sterilization unit
210: handle 220: cooling fan
230: housing 231: opening
233: accommodation space 240: fan drive unit
250: germicidal lamp 260: lamp driving unit
270: sterilization light transmission part 271: light transmission layer
273,275: light filter layer 281: reflector
291: light collecting unit 296: distance measurement unit
310: control unit 320: communication unit
330: storage unit 340: analysis unit

Claims (10)

main body;
a power supply unit integrally formed with or separated from the main body; and
A sterilization unit operated by an operation signal transmitted from the main body and power supplied from the power supply unit; includes,
The sterilization unit includes a housing having an accommodation space formed therein and an opening formed at a lower side; a germicidal lamp provided inside the housing to be located in the accommodation space and radiating far ultraviolet rays toward an object to be sterilized; And a germicidal light transmitting portion provided to cover the opening;
The housing is provided in a form that expands or spreads toward the lower end where the opening is formed so that far ultraviolet rays irradiated from the sterilization lamp pass through the opening and reach the object to be sterilized,
The germicidal light transmission unit may include a light-transmitting layer through which far ultraviolet rays irradiated from the germicidal lamp are all transmitted regardless of wavelength; a first optical filter layer formed on an upper surface of the light transmission layer to be positioned toward the germicidal lamp; and a second optical filter layer formed on the lower surface of the light-transmitting layer to be located on the opposite side of the germicidal lamp, having an optical depth greater than that of the first optical filter layer, and having a thickness greater than that of the first optical filter layer. include,
The first optical filter layer and the second optical filter layer selectively transmit only the far ultraviolet rays that act on the object to be sterilized or sterilize the object to be sterilized among the far ultraviolet rays irradiated by the sterilization lamp. sterilization device.
According to claim 1,
A sterilization device using far ultraviolet rays, characterized in that an air flow hole communicating between the accommodation space and the outside of the housing is formed in the housing to release heat generated in the accommodation space or to cool the sterilization lamp.
delete According to claim 2,
The first optical filter layer and the second optical filter layer selectively transmit only far ultraviolet rays having a wavelength of 215 to 230 nm among the far ultraviolet rays irradiated by the sterilizing lamp.
According to claim 4,
The light-transmitting layer is a sterilization device using far ultraviolet, characterized in that formed of any one of fused silica, calcium fluoride or lanthanum trifluoride.
According to claim 5,
The first optical filter layer and the second optical filter layer are formed of at least one of aluminum oxide and magnesium fluoride.
delete According to claim 6,
The second optical filter layer is formed so that the number of deposition of at least one of aluminum oxide and magnesium fluoride is greater than that of the first optical filter layer.
The method of any one of claims 2, 4 to 6 and 8,
A cooling fan is formed in the housing to introduce outside air of the housing into the accommodation space,
The sterilization device using far ultraviolet rays, characterized in that the external air introduced into the accommodation space by the cooling fan cools the sterilization lamp or is discharged to the outside of the housing after being sterilized by the sterilization lamp.
According to claim 9,
A sterilization device using far ultraviolet rays, characterized in that a reflecting part is formed between the ceiling of the housing and the sterilizing lamp, or a light collecting part is formed between the sterilizing lamp and the sterilizing light transmission part.

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