CN212973617U - Hand-held deep ultraviolet LED sterilizer - Google Patents
Hand-held deep ultraviolet LED sterilizer Download PDFInfo
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- CN212973617U CN212973617U CN202020579100.5U CN202020579100U CN212973617U CN 212973617 U CN212973617 U CN 212973617U CN 202020579100 U CN202020579100 U CN 202020579100U CN 212973617 U CN212973617 U CN 212973617U
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Abstract
The utility model discloses a hand-held deep ultraviolet LED sterilizer, which comprises a shell, a deep ultraviolet LED component and a heat dissipation component; the shell is provided with an irradiation window, and a heat dissipation cavity is arranged in the shell; the deep ultraviolet LED assembly comprises a substrate and a plurality of LED modules, and each LED module comprises a packaging support and a plurality of deep ultraviolet LED chips packaged on the packaging support; the LED module is arranged on the substrate through the packaging support, and 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, and the deep ultraviolet LED chip is located at the irradiation window. The high-efficiency sterilization and disinfection of the handheld irradiation surface are realized, and the irradiation direction, the irradiation area and the irradiation distance of the device are controllable, so that the pollution and the harm of ultraviolet radiation to the surrounding environment and people are avoided.
Description
Technical Field
The utility model relates to a sterilizing equipment especially relates to a hand-held type dark ultraviolet LED sterilization apparatus.
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, the deep ultraviolet LED lamp can be widely used because the deep ultraviolet LED lamp can be carried with a user when the user goes out. The ultraviolet sterilization requirements are as follows: (1) the wavelength of the ultraviolet radiation; (2) the radiation dose to sterilize the 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 disinfection technical specification issued by the state: 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 thousands microjoules). Therefore, ultraviolet sterilization is based on the applicable wavelength, and the sterilization efficiency depends on the irradiance. However, due to the limitation of the radiation power of the deep ultraviolet LED lamp (the current deep ultraviolet LED lamp is milliwatt level, which is far less than that of the conventional mercury lamp (up to watt level)), the deep ultraviolet LED lamp has low sterilization efficiency due to low power. In view of this, how to design a technique that the efficiency of disinfecting is high and portable is the technical problem that the utility model aims to solve.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hand-held type dark ultraviolet LED sterilization apparatus to the above-mentioned shortcoming that the mode of disinfecting among the prior art exists, the realization user of being convenient for goes out to carry and improves sterilization's efficiency.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a hand-held deep ultraviolet LED sterilizer comprises a shell, a deep ultraviolet LED assembly and a heat dissipation assembly; the shell is provided with an irradiation window, and a heat dissipation cavity is arranged in the shell; the deep ultraviolet LED assembly comprises a substrate and a plurality of LED modules, and each LED module comprises a packaging support and a plurality of deep ultraviolet LED chips packaged on the packaging support; the LED module is arranged on the substrate through the packaging support, and 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 LED chip is located at the irradiation window, and the shell is further provided with a handle.
Further, the irradiance of the deep ultraviolet LED assembly within 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 LED assembly.
Furthermore, a power supply module is further arranged in the shell and used for supplying power to the electric control board and the deep ultraviolet LED 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 LED chip through encapsulation on the encapsulation support, a plurality of deep ultraviolet LED chips can effectual reinforcing radiant power on the unit area, thus, alright in order to satisfy closely quick sterile requirement, and simultaneously, the radiator unit of independent configuration can dispel the heat and cool down the processing to the heat that deep ultraviolet LED chip produced in the shell, so that the operation that the deep ultraviolet LED chip can be reliable prolongs its life, and because the less integration of the whole volume of deep ultraviolet LED subassembly is in the shell, under the prerequisite that satisfies the user and go out to carry the requirement, furthest's improvement sterile efficiency.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read 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 described 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 inventive labor.
FIG. 1 is a schematic structural diagram of an embodiment of the handheld deep ultraviolet LED sterilizer of the present invention;
FIG. 2 is a cross-sectional view of an embodiment of the hand-held deep ultraviolet LED sterilizer of the present invention;
FIG. 3 is an exploded view of an embodiment of the hand-held deep ultraviolet LED sterilizer of the present invention;
fig. 4 is a schematic structural diagram of an LED module in an embodiment of the handheld deep ultraviolet LED 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 embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-3, the handheld deep ultraviolet LED sterilizer of the present embodiment includes a housing 1, a deep ultraviolet LED module 2 and a heat dissipation module 3; an irradiation window 11 is arranged on the shell 1, and a heat dissipation cavity 12 is arranged in the shell 1; the deep ultraviolet LED assembly 2 comprises a substrate 21 and a plurality of LED modules 22, wherein each LED module 22 comprises a packaging support 221 and a plurality of deep ultraviolet LED chips 222 packaged on the packaging support 221; the LED module 22 is disposed on the substrate 21 through the package support 221, and the substrate 21 is disposed on the heat sink 3; the heat dissipation assembly 3 is disposed in the heat dissipation cavity 12 and used for cooling and dissipating heat of the substrate 21, and the deep ultraviolet LED chip 222 is located at the irradiation window 11.
Specifically, in the handheld deep ultraviolet LED sterilization sterilizer of the present embodiment, the plurality of deep ultraviolet LED chips 222 are packaged on the same packaging support 221, so that the distribution density of the deep ultraviolet LED chips 222 on the packaging support 221 is increased, and further, the ultraviolet radiation power with higher intensity is generated per unit area of each LED module 22. Meanwhile, the plurality of LED modules 22 are collectively mounted on the same substrate 21 through the package support 221, and the package support 221 is soldered on the same substrate 21 by means of reflow soldering. In the actual use process, a plurality of LED modules 22 form a surface light source, and when the surface light source irradiates an article in a short distance, the effect of killing bacteria and viruses in seconds is achieved.
Meanwhile, because the deep ultraviolet LED chips 222 are integrated on the same substrate 21, the deep ultraviolet LED chips 222 generate a large amount of heat during the power-on operation. Therefore, the substrate 21 is cooled in an auxiliary manner through the heat dissipation assembly 3, so that the deep ultraviolet LED chip 222 can be cooled rapidly to operate reliably for a long time, and the service life of the deep ultraviolet LED chip 222 is effectively prolonged.
The arrangement density of the deep ultraviolet LED chips 222 is required to meet the requirement of rapid sterilization in a short distance. Generally, the irradiation dose required for sterilization and disinfection of various bacteria and viruses is different, and the irradiation dose is determined 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 thousands microjoules). For the deep ultraviolet LED chip 222, the wavelength of the ultraviolet light emitted therefrom completely meets the requirements of sterilization and disinfection, and the sterilization efficiency depends on the irradiance level. Preferably, the irradiance of the deep ultraviolet LED assembly 2 is not less than 80 mW/cm within a range not more than 1cm from the irradiation window 112. Specifically, a plurality of adopted deep ultraviolet LED chips 222 are packaged on the same packaging support 221, and a plurality of packaging supports 221 are mounted on the same substrate 21 in a patch manner, so that the irradiance of the deep ultraviolet LED assembly 2 is not lower than 80 mW/cm2. In the actual test process, for common bacteria such as escherichia coli, under the irradiation of the radiation illumination, only 5 seconds are needed, and 5LOG can be achieved; 99.999% of sterilization rate.
Wherein, an electric control board 4 is further arranged in the heat dissipation cavity 12, and the electric control board 4 is electrically connected with the deep ultraviolet LED component 2. Specifically, the electronic control board 4 is also arranged in the heat dissipation cavity 12, the deep ultraviolet LED assembly 2 is controlled by the electronic control board 4 to operate, the button 40 may be arranged on the housing 1, and the electronic control board 4 is controlled by the button 40, so that the switch of the deep ultraviolet LED assembly 2 is controlled by the electronic control board 4.
In addition, a power supply module 5 is further arranged in the housing 1, and the power supply module 5 is used for supplying power to the electronic control board 4 and the deep ultraviolet LED assembly 2. Specifically, the representation entity of the power supply module 5 has various forms, such as: the power supply module 5 is a storage battery arranged in the shell 1; alternatively, the power supply module 5 is a power line provided on the housing 1.
Further, in order to bring convenience to the user for carrying and using, the shell 1 is further provided with the handle 13, specifically, in the using process, the user holds the handheld deep ultraviolet LED sterilizer through the handle 13, so that the user can conveniently hold the handheld deep ultraviolet LED sterilizer for use, and the user can conveniently hold the handheld deep ultraviolet LED sterilizer for reciprocating movement to sterilize and disinfect. At the same time, quartz glass 14 is disposed in the irradiation window 11 to protect the deep ultraviolet LED module 2 inside.
Based on the above technical solution, optionally, for the heat dissipation assembly 3, the heat dissipation performance of the heat dissipation assembly is related to whether the deep ultraviolet LED assembly 2 can operate reliably. The heat dissipation assembly 3 can dissipate heat from the substrate 21 by using a natural heat dissipation method, for example, heat dissipation fins with a fast heat dissipation function, and preferably, by using a forced heat dissipation method. The forced heat dissipation mode also has various forms, such as: forced air cooling may be employed, or alternatively, forced refrigeration may be employed.
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 LED chip 222 is powered on, the heat generated by the deep ultraviolet LED chip 222 is transferred to the first heat dissipation part 32 through the substrate 21, and under the forced air cooling treatment of the first fan 31, the first heat dissipation part 32 is enabled to dissipate heat quickly, so as to perform the function of cooling the deep ultraviolet LED assembly 2 quickly. The first heat sink 32 is usually made of a material with good heat conduction and heat dissipation, such as: copper and aluminum can be used, and preferably, the first heat sink 32 is further provided with heat dissipation fins to increase the heat dissipation area.
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 embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A hand-held deep ultraviolet LED sterilizer is characterized by comprising a shell, a deep ultraviolet LED component and a heat dissipation component; the shell is provided with an irradiation window, and a heat dissipation cavity is arranged in the shell; the deep ultraviolet LED assembly comprises a substrate and a plurality of LED modules, and each LED module comprises a packaging support and a plurality of deep ultraviolet LED chips packaged on the packaging support; the LED module is arranged on the substrate through the packaging support, and 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, and the deep ultraviolet LED chip is located at the irradiation window.
2. The hand-held deep ultraviolet LED sterilizer of claim 1, wherein the irradiance of the deep ultraviolet LED assembly is no less than 80 mW/cm in a range not more than 1cm from the illumination window2。
3. The hand-held deep ultraviolet LED sterilizer of claim 1, wherein an electrical control board is further disposed in the heat dissipation chamber, and the electrical control board is electrically connected to the deep ultraviolet LED assembly.
4. The hand-held deep ultraviolet LED sterilizer of claim 3, wherein a power supply module is further provided in the housing for supplying power to the electronic control board and the deep ultraviolet LED assembly.
5. The hand-held deep ultraviolet LED sterilizer of claim 4, wherein the power module is a battery disposed in the housing; or the power supply module is a power line arranged on the shell.
6. The hand-held deep ultraviolet LED sterilizer of any one of claims 1 to 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 LED sterilizer of claim 6, wherein a first vent and a second vent are arranged on the housing, and the first vent and the second vent 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.
8. The hand-held deep ultraviolet LED sterilizer of any one of claims 1 to 5, wherein the heat dissipation assembly comprises a semiconductor cooling fin and a heat conducting member, a cold end surface 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 LED 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 LED 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 port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020579100.5U CN212973617U (en) | 2020-04-17 | 2020-04-17 | Hand-held deep ultraviolet LED sterilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020579100.5U CN212973617U (en) | 2020-04-17 | 2020-04-17 | Hand-held deep ultraviolet LED sterilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212973617U true CN212973617U (en) | 2021-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020579100.5U Active CN212973617U (en) | 2020-04-17 | 2020-04-17 | Hand-held deep ultraviolet LED sterilizer |
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| Country | Link |
|---|---|
| CN (1) | CN212973617U (en) |
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- 2020-04-17 CN CN202020579100.5U patent/CN212973617U/en active Active
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