CN111481692A - Hand-held deep ultraviolet L ED sterilizer - Google Patents
Hand-held deep ultraviolet L ED sterilizer Download PDFInfo
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- CN111481692A CN111481692A CN202010307296.7A CN202010307296A CN111481692A CN 111481692 A CN111481692 A CN 111481692A CN 202010307296 A CN202010307296 A CN 202010307296A CN 111481692 A CN111481692 A CN 111481692A
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 73
- 239000000758 substrate Substances 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 238000004806 packaging method and process Methods 0.000 claims abstract description 9
- 239000004065 semiconductor Substances 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 23
- 230000001954 sterilising effect Effects 0.000 description 18
- 238000009423 ventilation Methods 0.000 description 13
- 238000005057 refrigeration Methods 0.000 description 9
- 241000894006 Bacteria Species 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
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- 238000010586 diagram Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 229920002477 rna polymer Polymers 0.000 description 2
- 241000711573 Coronaviridae Species 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
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- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultraviolet radiation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/26—Accessories or devices or components used for biocidal treatment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D1/00—Devices using naturally cold air or cold water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
- F25B2321/025—Removal of heat
- F25B2321/0251—Removal of heat by a gas
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Public Health (AREA)
- Combustion & Propulsion (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Epidemiology (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The invention discloses a handheld deep ultraviolet L ED sterilizer which comprises a shell, a deep ultraviolet L ED component and a heat dissipation component, wherein an irradiation window is arranged on the shell, a heat dissipation cavity is arranged in the shell, the deep ultraviolet L ED component comprises a substrate and a plurality of L ED modules, the L ED modules comprise a packaging support and a plurality of deep ultraviolet L ED chips packaged on the packaging support, the L ED modules are arranged on the substrate through the packaging support, the substrate is arranged on the heat dissipation component, the heat dissipation component is arranged in the heat dissipation cavity and used for cooling and dissipating heat of the substrate, the deep ultraviolet L ED chips are located at the irradiation window, and a handle is further arranged on the shell.
Description
Technical Field
The invention relates to sterilization equipment, in particular to a handheld deep ultraviolet L ED sterilization sterilizer.
Background
Ultraviolet radiation sterilization is a very mature physical sterilization technology, and has been used for over a hundred years. The sterilization principle is that when ultraviolet rays irradiate pathogenic microorganisms, the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in the cells of the organisms of the microorganisms is damaged, molecular chain breakage and cross-linking breakage of nucleic acid and protein are caused, so that the microorganisms lose normal replication to achieve the aim of reproduction, and the mechanism is that the microorganisms are inactivated.
Aiming at the novel coronavirus which is popular at present, when a user goes out, the deep ultraviolet L ED lamp can be carried about to be more widely used, and the necessary conditions of ultraviolet sterilization are that (1) the wavelength of ultraviolet irradiation and (2) the irradiation dose of the sterilization surface, the effective sterilization wavelength is 200-280nm, and the irradiation dose required for sterilization is different for various bacteria and viruses, according to the sterilization technical specification issued by the state, the common bacteria are killed, and the required irradiation dose is 10000uW.S/cm2(1 ten thousand microjoules); killing bacterial spores, and the required irradiation dose is as follows: 100000 uW.S/cm2(10 ten thousand microjoules); the irradiation dose required for killing virus is: between 10000uW.S/cm2(1 ten thousand microjoules) -100000 uW.S/cm2The ultraviolet sterilization is based on the applicable wavelength, and the sterilization efficiency depends on the irradiance, but is limited by the radiation power of the deep ultraviolet L ED lamp (the deep ultraviolet L ED lamp is milliwatt level, which is far less than that of the traditional mercury lamp (up to watt level)), and the deep ultraviolet L ED lamp has lower sterilization efficiency due to lower power.
Disclosure of Invention
Aiming at the defects existing in the sterilization mode in the prior art, the invention provides the handheld deep ultraviolet L ED sterilization sterilizer which is convenient for users to carry and improves the sterilization efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
a handheld deep ultraviolet L ED sterilizer comprises a shell, a deep ultraviolet L ED assembly and a heat dissipation assembly, wherein an irradiation window is arranged on the shell, a heat dissipation cavity is arranged in the shell, the deep ultraviolet L ED assembly comprises a substrate and a plurality of L ED modules, the L ED modules comprise a packaging support and a plurality of deep ultraviolet L ED chips packaged on the packaging support, the L ED modules are arranged on the substrate through the packaging support, the substrate is arranged on the heat dissipation assembly, the heat dissipation assembly is arranged in the heat dissipation cavity and used for cooling and dissipating heat of the substrate, the deep ultraviolet L ED chips are located at the irradiation window, and a handle is further arranged on the shell.
Further, the irradiance of the deep ultraviolet L ED component in a range not more than 1cm away from the irradiation window is not lower than 80 mW/cm2。
Furthermore, an electric control board is further arranged in the heat dissipation cavity and electrically connected with the deep ultraviolet L ED component.
Further, a power supply module is further arranged in the shell and used for supplying power to the electronic control board and the deep ultraviolet L ED assembly.
Further, the power supply module is a storage battery arranged in the shell; or the power supply module is a power line arranged on the shell.
Furthermore, the heat dissipation assembly comprises a first fan and a first heat dissipation part, the first fan and the first heat dissipation part are located in the heat dissipation cavity, and the substrate is arranged on the first heat dissipation part.
Furthermore, a first ventilation opening and a second ventilation opening are formed in the shell, and the first ventilation opening and the second ventilation opening are respectively communicated with the heat dissipation cavity; under the action of the first fan, the air of the shell enters the heat dissipation cavity through the first ventilation opening, exchanges heat with the first heat dissipation part and then is output from the second ventilation opening.
Furthermore, the heat dissipation assembly comprises a semiconductor refrigeration sheet and a heat conduction component, the cold end face of the semiconductor refrigeration sheet is in heat conduction with the heat conduction component, and the substrate is arranged on the heat conduction component.
Furthermore, a second heat radiating part is arranged on the hot end face of the semiconductor refrigeration piece.
Furthermore, a second fan used for blowing and radiating the second radiating component is further arranged in the radiating cavity, and a radiating air port is formed in the shell.
If each deep ultraviolet L ED chip through encapsulation on the encapsulation support, a plurality of deep ultraviolet L ED chips can effectual reinforcing radiant power on the unit area, thus, alright in order to satisfy closely quick sterile requirement, and simultaneously, independent configuration's radiating component can dispel the heat and cool down the processing to the heat that deep ultraviolet L ED chip produced in the shell, so that deep ultraviolet L ED chip can reliable operation and prolong its life, and because the less integration of the whole volume of deep ultraviolet L ED component is in the shell, under the prerequisite that satisfies the user requirement of carrying of going out, furthest's improvement the sterile efficiency that sterilizes.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a hand-held deep ultraviolet L ED sterilizer according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an embodiment of the handheld deep ultraviolet L ED sterilizer of the present invention;
FIG. 3 is an exploded view of an embodiment of the hand-held deep ultraviolet L ED sterilizer of the present invention;
FIG. 4 is a schematic diagram of a L ED module in an embodiment of a handheld deep ultraviolet L ED sterilizer of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-3, the handheld deep ultraviolet L ED sterilizer of the present embodiment includes a housing 1, a deep ultraviolet L ED module 2, and a heat dissipation module 3, wherein an irradiation window 11 is disposed on the housing 1, a heat dissipation cavity 12 is disposed in the housing 1, the deep ultraviolet L ED module 2 includes a substrate 21 and a plurality of L ED modules 22, the L ED module 22 includes a package support 221 and a plurality of deep ultraviolet L ED chips 222 packaged on the package support 221, the L ED module 22 is disposed on the substrate 21 through the package support 221, the substrate 21 is disposed on the heat dissipation module 3, the heat dissipation module 3 is disposed in the heat dissipation cavity 12 and is configured to cool and dissipate heat from the substrate 21, and the deep ultraviolet L ED chips 222 are located at the irradiation window 11.
Specifically, the handheld deep ultraviolet L ED sterilizer of the embodiment packages a plurality of deep ultraviolet L ED chips 222 on the same package support 221, so that the distribution density of the deep ultraviolet L ED chips 222 on the package support 221 is increased, and further, ultraviolet radiation power with higher intensity is generated on each L ED module 22 per unit area.
Meanwhile, the high-density deep ultraviolet L ED chips 222 are integrated on the same substrate 21, and the deep ultraviolet L ED chips 222 generate a large amount of heat in the power-on working process, so that the substrate 21 is cooled in an auxiliary manner through the heat dissipation assembly 3, and further the deep ultraviolet L ED chips 222 can be rapidly cooled so as to reliably operate for a long time, and the service life of the deep ultraviolet L ED chips 222 is effectively prolonged.
The arrangement density of the deep ultraviolet L ED chips 222 is required to meet the requirement of short-distance rapid sterilizationThe irradiation dose required for sterilization and disinfection of various bacteria and viruses is different according to the disinfection technical specification issued by the state: the effective sterilization and disinfection wavelength is 250-280nm, general bacteria are killed, and the required irradiation dose is as follows: 10000uW.S/cm2(1 ten thousand microjoules); killing bacterial spores, and the required irradiation dose is as follows: 100000 uW.S/cm2(10 ten thousand microjoules); the irradiation dose required for killing virus is: between 10000uW.S/cm2(1 ten thousand microjoules) -100000 uW.S/cm2(10 kilo-joules) whereas for a deep-ultraviolet L ED chip 222 emitting ultraviolet light at a wavelength that fully satisfies the requirements for sterilization and disinfection, the efficiency of sterilization depends on the level of irradiance, preferably, the irradiance of the deep-ultraviolet L ED assembly 2 is not less than 80 mW/cm within a range of no more than 1cm from the irradiation window 112Specifically, a plurality of deep ultraviolet L ED chips 222 are packaged on the same package support 221, and the package supports 221 are mounted on the same substrate 21 in a patch manner, so that the irradiance of the deep ultraviolet L ED component 2 is not lower than 80 mW/cm2In the actual test process, for common bacteria such as escherichia coli, under the irradiation of the radiation illumination, only less than 5 seconds are needed to achieve 5L OG and 99.999 percent of sterilization rate.
The heat dissipation cavity 12 is further provided with an electric control board 4, the electric control board 4 is electrically connected with the deep ultraviolet L ED component 2, specifically, the electric control board 4 is also arranged in the heat dissipation cavity 12, the electric control board 4 is used for controlling the operation of the deep ultraviolet L ED component 2, a button 40 can be arranged on the shell 1, the electric control board 4 is controlled through the button 40, and the switch of the deep ultraviolet L ED component 2 is controlled by the electric control board 4.
In addition, a power supply module 5 is arranged in the casing 1, and the power supply module 5 is used for supplying power to the electronic control board 4 and the deep ultraviolet L ED assembly 2. specifically, the representation entity of the power supply module 5 has various forms, for example, the power supply module 5 is a storage battery arranged in the casing 1, or the power supply module 5 is a power supply wire arranged on the casing 1.
Further, in order to facilitate carrying and using by a user, the housing 1 is further provided with a handle 13, specifically, in the using process, the user holds the handheld deep ultraviolet L ED sterilizer through the handle 13, on one hand, the user can conveniently hold and use the handheld deep ultraviolet L ED sterilizer, on the other hand, the user can conveniently hold the handheld deep ultraviolet L ED sterilizer to perform sterilization and disinfection in a reciprocating manner, and meanwhile, the irradiation window 11 is further provided with quartz glass 14 to protect the inner deep ultraviolet L ED module 2.
Based on the above technical solution, optionally, for the heat dissipation assembly 3, the heat dissipation performance of the heat dissipation assembly has a relationship with whether the deep ultraviolet L ED assembly 2 can operate reliably, the heat dissipation assembly 3 may adopt a natural heat dissipation manner, for example, a heat dissipation fin with a fast heat dissipation function is adopted to dissipate heat of the substrate 21, and in a preferred solution, a forced heat dissipation manner is adopted, and the forced heat dissipation manner also has various forms, for example, forced air cooling or forced cooling may be adopted.
In the case of forced air cooling, the heat dissipation assembly 3 includes a first fan 31 and a first heat dissipation member 32, the first fan 31 and the first heat dissipation member 32 are located in the heat dissipation cavity 12, and the substrate 21 is disposed on the first heat dissipation member 32. specifically, in the actual use process, after the deep ultraviolet L ED chips 222 are powered on, heat generated by the deep ultraviolet L ED chips 222 is transferred to the first heat dissipation member 32 through the substrate 21, and the first heat dissipation member 32 is rapidly cooled under the forced air cooling treatment of the first fan 31, so as to perform a rapid cooling and heat dissipation function on the deep ultraviolet L ED assembly 2.
Meanwhile, in order to meet the forced air cooling heat dissipation requirement, a first ventilation opening 101 and a second ventilation opening 102 are arranged on the shell 1, and the first ventilation opening 101 and the second ventilation opening 102 are respectively communicated with the heat dissipation cavity 12; under the action of the first fan 31, the housing air enters the heat dissipation cavity 12 through the first ventilation openings 101, exchanges heat with the first heat dissipation part 32, and then is output from the second ventilation openings 102. Specifically, in the using process, the external cold air is sucked into the heat dissipation cavity 12 under the action of the first fan 31, and the cold air exchanges heat with the first heat dissipation part 32 to take away the heat of the first heat dissipation part 32 and reduce the temperature. The first ventilation opening 101 is located at one side of the first heat dissipation component 32, so that the cold air entering the heat dissipation cavity 12 can directly exchange heat with the first heat dissipation component 32, thereby improving the heat dissipation efficiency.
Similarly, in a direct cooling manner, the heat dissipation assembly 3 includes a semiconductor cooling plate (not labeled) and a heat conduction member (not labeled), the cold end surface of the semiconductor cooling plate is thermally conducted with the heat conduction member, and the substrate 21 is disposed on the heat conduction member. Specifically, the semiconductor refrigeration piece is adopted to efficiently cool by utilizing the cold energy released by the cold end surface of the semiconductor refrigeration piece, the cold energy released by the semiconductor refrigeration piece is conducted by the heat conducting component, and meanwhile, the heat transferred by the substrate 21 is also conducted onto the heat conducting component, so that the rapid and efficient refrigeration and cooling are realized. The heat conducting member is also made of a material having high heat conducting efficiency, such as copper aluminum.
In order to ensure reliable operation of the semiconductor chilling plate, a second heat dissipation part (not shown) is arranged on the hot end surface of the semiconductor chilling plate, a second fan (not shown) is further arranged in the heat dissipation cavity 12, and a heat dissipation air port (not shown) is arranged on the housing 1. Specifically, the second cooling part on the hot end face of the semiconductor refrigeration piece is subjected to auxiliary air cooling by the second fan, so that the semiconductor refrigeration piece can run efficiently and stably.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A handheld deep ultraviolet L ED sterilizer is characterized by comprising a shell, a deep ultraviolet L ED component and a heat dissipation component, wherein an irradiation window is arranged on the shell, a heat dissipation cavity is arranged in the shell, the deep ultraviolet L ED component comprises a substrate and a plurality of L ED modules, the L ED module comprises a packaging support and a plurality of deep ultraviolet L ED chips packaged on the packaging support, the L ED module is arranged on the substrate through the packaging support, the substrate is arranged on the heat dissipation component, the heat dissipation component is arranged in the heat dissipation cavity and used for cooling and dissipating heat of the substrate, the deep ultraviolet L ED chips are located at the irradiation window, and a handle is further arranged on the shell.
2. The hand-held deep ultraviolet L ED sterilizer of claim 1, wherein the irradiance of the deep ultraviolet L ED assembly is no less than 80 mW/cm 2 within no more than 1cm from the irradiation window.
3. The handheld deep ultraviolet L ED sterilizer of claim 1, wherein an electronic control board is further disposed in the heat dissipation chamber, the electronic control board being electrically connected to the deep ultraviolet L ED assembly.
4. The handheld deep ultraviolet L ED sterilizer of claim 3, wherein a power module is further provided in the housing for supplying power to the electronic control board and the deep ultraviolet L ED components.
5. The hand-held deep ultraviolet L ED sterilizer of claim 4, wherein the power module is a battery disposed in the housing or the power module is a power cord disposed on the housing.
6. The handheld deep ultraviolet L ED sterilizer of any of claims 1-5, wherein the heat sink assembly comprises a first fan and a first heat sink member, the first fan and the first heat sink member being located in the heat sink cavity, the substrate being disposed on the first heat sink member.
7. The hand-held deep ultraviolet L ED sterilizer of claim 6, wherein the housing is provided with a first vent and a second vent, the first vent and the second vent are respectively communicated with the heat dissipation cavity, and under the action of the first fan, housing air enters the heat dissipation cavity through the first vent, exchanges heat with the first heat dissipation component and then is output from the second vent.
8. The handheld deep ultraviolet L ED sterilizer of any one of claims 1-5, wherein the heat dissipation assembly comprises a semiconductor cooling fin and a heat conducting member, the cold end face of the semiconductor cooling fin is in heat conduction with the heat conducting member, and the substrate is disposed on the heat conducting member.
9. The hand-held deep ultraviolet L ED sterilizer of claim 8, wherein a second heat sink member is provided on a hot end face of the semiconductor chilling plate.
10. The hand-held deep ultraviolet L ED sterilizer of claim 9, wherein a second fan is further disposed in the heat dissipation chamber for blowing air to dissipate heat of the second heat dissipation component, and the housing is provided with a heat dissipation air opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010307296.7A CN111481692A (en) | 2020-04-17 | 2020-04-17 | Hand-held deep ultraviolet L ED sterilizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010307296.7A CN111481692A (en) | 2020-04-17 | 2020-04-17 | Hand-held deep ultraviolet L ED sterilizer |
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| CN111481692A true CN111481692A (en) | 2020-08-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111920977A (en) * | 2020-09-14 | 2020-11-13 | 梁旭东 | Hand-held type high strength ultraviolet ray device of killing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111920977A (en) * | 2020-09-14 | 2020-11-13 | 梁旭东 | Hand-held type high strength ultraviolet ray device of killing |
| CN112510043A (en) * | 2020-12-01 | 2021-03-16 | 华中科技大学 | Deep ultraviolet LED integrated chip and preparation method thereof |
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