CN213716840U - Excimer ultraviolet germicidal lamp - Google Patents
Excimer ultraviolet germicidal lamp Download PDFInfo
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- CN213716840U CN213716840U CN202022923646.0U CN202022923646U CN213716840U CN 213716840 U CN213716840 U CN 213716840U CN 202022923646 U CN202022923646 U CN 202022923646U CN 213716840 U CN213716840 U CN 213716840U
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Abstract
The utility model relates to an excimer ultraviolet germicidal lamp, which comprises a laser generator, a frequency doubling crystal and a quartz scattering lens, wherein the frequency doubling crystal is arranged between the laser generator and the quartz scattering lens; the laser generator is arranged facing the frequency doubling crystal for irradiation, the laser wavelength generated by the laser generator is N times of the target wavelength, N is a positive integer, and the target wavelength is a wavelength value within 200 nm-230 nm; the multiplying power of the frequency doubling crystal is also N; the wavelength of the laser passing through the frequency doubling crystal is the target wavelength, and the laser is diffused and emitted through the quartz scattering lens. Compared with the existing ultraviolet generating device, the excimer ultraviolet germicidal lamp can accurately control the wavelength of ultraviolet rays within the range of 200 nm-230 nm under the condition of not using a filter with high price, thus not only reducing the production cost, but also avoiding the damage to human bodies and having higher safety performance.
Description
Technical Field
The utility model relates to a sterilization and disinfection equipment technical field, especially an excimer ultraviolet germicidal lamp.
Background
With the progress of science and technology, ultraviolet rays are widely applied to the fields of medicine, sterilization and the like. Experiments show that when the wavelength of ultraviolet is higher than 200nm and lower than 230nm, if a human body contacts the ultraviolet, the ultraviolet can only kill bacteria on the surface of the skin of the human body; when ultraviolet rays with the wavelength of more than 230nm are used for sterilization, the destructive power of the ultraviolet rays on microorganisms is strong, the ultraviolet rays irradiated by the bacterial body in the wave band can damage chains between nucleoprotein and deoxyribonucleic acid (DNA) of bacterial cells, so that the bacteria are killed, and the sterilization effect is achieved. In order to reduce the harm to human body, the current ultraviolet lamp has the following two use modes: one is that the ultraviolet lamp is started for sterilization in an unmanned environment, and the ultraviolet lamp cannot be used in all weather and cannot be used for sterilizing and disinfecting places needing sterilization at any time. The other kind is, install the filter in ultraviolet lamp's the place ahead additional, though this kind of mode enables to permeate through the ultraviolet wavelength of filter and is less than 230nm, but along with the increase of live time, the filter also can rise gradually at ultraviolet irradiation lower temperature, the filter temperature is too high the light migration of considering appears, consequently, the ultraviolet wavelength range that such ultraviolet lamp installed the ultraviolet device generation of filter additional is unstable, the ultraviolet wavelength of accurate control is unable to accomplish, and the filter is high in price, the ultraviolet device manufacturing cost has been led to like this too high.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned not enough that prior art exists, provide an excimer ultraviolet germicidal lamp, thereby realize the ultraviolet wavelength of accurate control, thereby avoid using filter plate reduction in production cost.
The utility model provides a technical scheme that its technical problem adopted is: the excimer ultraviolet germicidal lamp is characterized by comprising a laser generator, a frequency doubling crystal and a quartz scattering lens, wherein the frequency doubling crystal is arranged between the laser generator and the quartz scattering lens; the laser generator is arranged facing the frequency doubling crystal for irradiation, the laser wavelength generated by the laser generator is N times of the target wavelength, N is a positive integer, and the target wavelength is a wavelength value within 200 nm-230 nm; the multiplying power of the frequency doubling crystal is also N; the wavelength of the laser passing through the frequency doubling crystal is the target wavelength, and the laser is diffused and emitted through the quartz scattering lens.
The working principle of the utility model is as follows:
visible laser emitted by the laser generator penetrates out of the frequency doubling crystal, and the frequency of the laser is increased in multiples according to the parameters of the frequency doubling crystal under the action of the frequency doubling crystal, so that the wavelength of the laser is reduced in multiples; the ultraviolet rays passing through the frequency doubling crystal also penetrate through the quartz scattering lens to be emitted, and because the quartz scattering lens has the characteristic of dispersing light, the ultraviolet rays generated by the laser generator are converted into a surface light source from a point light source so as to carry out irradiation sterilization in a large range and improve the working efficiency; compared with the existing ultraviolet generating device, the excimer ultraviolet germicidal lamp can accurately obtain ultraviolet with a wavelength value within 200 nm-230 nm without using a filter with high price, thereby not only reducing the production cost, but also avoiding the damage to the human body and having higher safety performance.
As a further aspect of the present invention: as mentioned above, the laser generated by the laser generator is vertically incident into the frequency doubling crystal.
As a further aspect of the present invention: in the excimer ultraviolet germicidal lamp as described above, the quartz scattering lens is a concave lens.
As a further aspect of the present invention: in the excimer ultraviolet germicidal lamp, the frequency doubling crystal is a BBO crystal or a KDP crystal, the chinese name of the BBO crystal is a barium metaborate crystal, and the chinese name of the KDP crystal is a potassium dihydrogen phosphate crystal.
As a scheme of the utility model: the excimer ultraviolet germicidal lamp further comprises a protective shell, a left quartz glass plate and a right quartz glass plate; the protective shell is of a cylindrical structure and is arranged between the laser generator and the quartz scattering lens, one cylinder opening of the protective shell is over against the laser generator, and the other cylinder opening of the protective shell is over against the quartz scattering lens; the left quartz glass plate is covered on one cylinder opening of the protective shell; the right quartz glass plate is covered on the other cylinder opening of the protective shell; the protective shell, the left quartz glass plate and the right quartz glass plate are combined to form an installation space, and the installation space is airtight with the outside; the frequency doubling crystal is installed in the installation space.
As a further improvement of the previous solution of the present invention: the excimer ultraviolet germicidal lamp further comprises a shell, the laser generator, the protective shell and the quartz scattering lens are all arranged in the shell, and an opening through which light penetrating through the quartz scattering lens passes is formed in the shell.
As a further improvement of the previous solution of the present invention: the excimer ultraviolet germicidal lamp further comprises a cover shell, wherein the cover shell is of a circular ring structure, the cover shell is fixedly covered on the opening of the outer shell, and the edge of the quartz scattering lens is fixedly clamped between the cover shell and the opening of the outer shell.
As another scheme of the utility model: the excimer ultraviolet germicidal lamp further comprises a protective shell and a quartz glass plate; the protective shell is of a cylindrical structure; the quartz glass plate is covered on one of the cylinder openings of the protective shell and is arranged towards the direction of the laser generator; the quartz scattering lens cover is arranged on the other cylinder opening of the protective shell; the protective shell, the quartz glass plate and the quartz scattering lens are combined to form an installation space, and the installation space is airtight with the outside; the frequency doubling crystal is installed in the installation space.
As a further improvement of the previous solution of the present invention: the excimer ultraviolet germicidal lamp further comprises a shell, the laser generator and the protective shell are arranged in the shell, and an opening through which light penetrating through the quartz scattering lens passes is formed in the shell.
As a further improvement of the previous solution of the present invention: the excimer ultraviolet germicidal lamp further comprises a cover shell, wherein the cover shell is of a circular ring-shaped structure, and the cover shell is fixedly covered on the opening of the shell so as to limit the protective shell in the shell.
The technical scheme of the utility model, following beneficial effect has: compared with the existing ultraviolet generating device, the excimer ultraviolet sterilizing lamp is low in production cost, can sterilize and disinfect the environment all weather, can accurately control the wavelength of ultraviolet rays, and avoids the problem of safety in use caused by unstable wavelength of the ultraviolet rays.
Drawings
FIG. 1 is a front view of an excimer ultraviolet germicidal lamp of example 1;
FIG. 2 is a schematic cross-sectional view taken along the line A-A of FIG. 1;
FIG. 3 is a front view of an excimer ultraviolet germicidal lamp of example 2;
FIG. 4 is a schematic cross-sectional view taken along the line B-B in FIG. 3;
description of reference numerals:
11-a laser generator; 12-a protective housing; 13-frequency doubling crystals; 14-left quartz glass plate; 15-right quartz glass plate; 16-quartz scattering lens; 17-a housing; 18-a cover shell;
21-a laser generator; 22-a protective housing; 23-frequency doubling crystals; 24-quartz glass plate; 25-quartz scattering lens; 26-a housing; 27-a cover shell; 28-pressing the convex ring.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1 and 2, the present embodiment is an excimer ultraviolet germicidal lamp, which includes a laser generator 11, a protective housing 12, a frequency doubling crystal 13, a left quartz glass plate 14, a right quartz glass plate 15, a quartz scattering lens 16, an outer housing 17, and a cover 18.
As shown in fig. 2, the frequency doubling crystal 13 is disposed between the laser generator 11 and the quartz scattering lens 16, the laser generator 11 is disposed facing the frequency doubling crystal 13 for irradiation, the laser generated by the laser generator 11 is vertically injected into the frequency doubling crystal 13, the frequency doubling crystal is a BBO crystal or a KDP crystal, the BBO crystal has a chinese name of barium metaborate, the KDP crystal has a chinese name of potassium dihydrogen phosphate, the laser wavelength generated by the laser generator 11 is N times of the target wavelength, N is a positive integer, and the target wavelength is a wavelength value within 200nm to 230 nm; the multiplying power of the frequency doubling crystal 13 is also N; the wavelength of the laser light passing through the frequency doubling crystal 13 is the target wavelength, and the quartz scattering lens 16 is a concave lens, and the laser light is diverged and emitted through the quartz scattering lens 16. The multiplying factor of the frequency doubling crystal 13 used in this embodiment is 2, and it is required to obtain an ultraviolet light with a target wavelength of 222nm, so it can be known that the laser generator 11 capable of generating a laser with a wavelength of 444nm can be used to meet the required requirement, so that the excimer ultraviolet germicidal lamp can form an ultraviolet light with a specific wavelength. Because the laser generated by the laser generator 11 is a point light source, the obtained ultraviolet can be converted from the point light source to a surface light source through the diffusion effect of the quartz scattering lens 16, so that irradiation sterilization can be carried out in a large range, and the working efficiency is improved.
As shown in fig. 2, the protective casing 12 is a cylindrical structure, the protective casing 12 is disposed between the laser generator 11 and the quartz scattering lens 16, one opening of the protective casing 12 faces the laser generator 11, and the other opening of the protective casing 12 faces the quartz scattering lens 16; the left quartz glass plate 14 is covered on one of the openings of the protective shell 12; the right quartz glass plate 15 is covered on the other cylinder opening of the protective shell 12; the protective shell 12, the left quartz glass plate 14 and the right quartz glass plate 15 are combined to form an installation space, and the installation space is airtight with the outside; the frequency doubling crystal 13 is installed in the installation space. Because such structure makes frequency doubling crystal 13 isolated with the outside air to avoid frequency doubling crystal 13 to be infected with by moisture, play dampproofing effect, increased frequency doubling device's life and stability of using.
As shown in fig. 2, the laser generator 11, the protective housing 12 and the quartz diffusion lens 16 are disposed in a housing 17, and the housing 17 is provided with an opening through which light transmitted through the quartz diffusion lens 16 passes. The cover shell 18 is a circular ring structure, the cover shell 18 is fixed on the opening of the outer shell 17 in a covering manner, and the edge of the quartz scattering lens 16 is fixed between the cover shell 18 and the opening of the outer shell 17 in a clamping manner. Laser generator 11, protection casing 12 specifically are fixed in shell 17 through the viscose, and such design can make this excimer ultraviolet germicidal lamp inner structure more firm, and lid shell 18 can conveniently be dismantled on the opening of shell 17 through the threaded fixation and maintain the internals.
Example 2
The present embodiment is different from embodiment 1 in the structure constituting the installation space: as shown in fig. 3 and 4 in particular, the present embodiment also includes a protective housing 22 and a quartz glass plate 24; the protective housing 22 is a cylindrical structure; the quartz glass plate 24 is covered on one of the openings of the protective shell 22, and the quartz glass plate 24 is arranged towards the direction of the laser generator 21; the quartz scattering lens 25 is covered on the other cylinder opening of the protective shell 22; the protective casing 22, the quartz glass plate 24 and the quartz diffusion lens 25 are combined to form an installation space, and the installation space is airtight with the outside; the frequency doubling crystal 23 is installed in the installation space. In this embodiment, the original quartz diffusion lens 25 is used to replace the left quartz glass plate in the excimer ultraviolet germicidal lamp of embodiment 1, so that the excimer ultraviolet germicidal lamp with the structure is simpler in structure and lower in production cost compared with the excimer ultraviolet germicidal lamp of embodiment 1.
As shown in fig. 4, the excimer ultraviolet germicidal lamp of the present embodiment further includes a housing 26 and a cover 27, the laser generator 21 and the protective housing 22 are both disposed in the housing 26, and the housing 26 is provided with an opening through which light passing through the quartz scattering lens 25 passes. The cover 27 is a circular ring structure, and the cover 27 is fixed on the opening of the outer casing 26 to limit the protective casing 26 in the outer casing 26. Laser generator 21 is fixed in shell 26 through the viscose, is formed with a roof pressure bulge loop 28 in shell 26, and protection casing 22 passes through lid shell 27 and roof pressure bulge loop 28 and is injectd in shell 26, and this design can make this excimer ultraviolet germicidal lamp inner structure more firm, and lid shell 27 can conveniently dismantle through threaded fixation on the opening of shell 26 and maintain internal component.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, which may be modified, combined, and varied by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. Excimer ultraviolet germicidal lamp, its characterized in that: the device comprises a laser generator, a frequency doubling crystal and a quartz scattering lens, wherein the frequency doubling crystal is arranged between the laser generator and the quartz scattering lens; the laser generator is arranged facing the frequency doubling crystal for irradiation, the laser wavelength generated by the laser generator is N times of the target wavelength, N is a positive integer, and the target wavelength is a wavelength value within 200 nm-230 nm; the multiplying power of the frequency doubling crystal is also N; the wavelength of the laser passing through the frequency doubling crystal is the target wavelength, and the laser is diffused and emitted through the quartz scattering lens.
2. The excimer uv germicidal lamp as claimed in claim 1, wherein: the laser generated by the laser generator is vertically injected into the frequency doubling crystal.
3. The excimer uv germicidal lamp as claimed in claim 1, wherein: the quartz scattering lens is a concave lens.
4. The excimer uv germicidal lamp as claimed in claim 1, wherein: the frequency doubling crystal is a BBO crystal or a KDP crystal.
5. The excimer uv germicidal lamp of claim 1 or 2 or 3 or 4 wherein: the quartz glass plate comprises a protective shell, a left quartz glass plate and a right quartz glass plate; the protective shell is of a cylindrical structure and is arranged between the laser generator and the quartz scattering lens, one cylinder opening of the protective shell is over against the laser generator, and the other cylinder opening of the protective shell is over against the quartz scattering lens; the left quartz glass plate is covered on one cylinder opening of the protective shell; the right quartz glass plate is covered on the other cylinder opening of the protective shell; the protective shell, the left quartz glass plate and the right quartz glass plate are combined to form an installation space, and the installation space is airtight with the outside; the frequency doubling crystal is installed in the installation space.
6. The excimer uv germicidal lamp as claimed in claim 5, wherein: the laser generator, the protective shell and the quartz scattering lens are all arranged in the shell, and an opening through which light penetrating through the quartz scattering lens passes is formed in the shell.
7. The excimer uv germicidal lamp as claimed in claim 6, wherein: the quartz scattering lens is characterized by further comprising a cover shell, wherein the cover shell is of a circular ring-shaped structure, the cover shell is fixedly covered on the opening of the outer shell, and the edge of the quartz scattering lens is fixedly clamped between the cover shell and the opening of the outer shell.
8. The excimer uv germicidal lamp of claim 1 or 2 or 3 or 4 wherein: the device also comprises a protective shell and a quartz glass plate; the protective shell is of a cylindrical structure; the quartz glass plate is covered on one of the cylinder openings of the protective shell and is arranged towards the direction of the laser generator; the quartz scattering lens cover is arranged on the other cylinder opening of the protective shell; the protective shell, the quartz glass plate and the quartz scattering lens are combined to form an installation space, and the installation space is airtight with the outside; the frequency doubling crystal is installed in the installation space.
9. The excimer uv germicidal lamp as claimed in claim 8, wherein: the laser generator and the protective shell are arranged in the shell, and an opening through which light penetrating through the quartz scattering lens passes is formed in the shell.
10. The excimer uv germicidal lamp as claimed in claim 9, wherein: still include the lid shell, the lid shell is the ring structure, and the lid shell lid is put on being fixed in the opening of shell to in the shell is prescribed a limit to the protective housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022923646.0U CN213716840U (en) | 2020-12-09 | 2020-12-09 | Excimer ultraviolet germicidal lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022923646.0U CN213716840U (en) | 2020-12-09 | 2020-12-09 | Excimer ultraviolet germicidal lamp |
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| Publication Number | Publication Date |
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| CN213716840U true CN213716840U (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022923646.0U Active CN213716840U (en) | 2020-12-09 | 2020-12-09 | Excimer ultraviolet germicidal lamp |
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| CN (1) | CN213716840U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11929248B1 (en) | 2023-05-22 | 2024-03-12 | City University Of Hong Kong | Far-UVC light source with an internal dielectric coating filter arranged on the interior side of electrode |
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2020
- 2020-12-09 CN CN202022923646.0U patent/CN213716840U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11929248B1 (en) | 2023-05-22 | 2024-03-12 | City University Of Hong Kong | Far-UVC light source with an internal dielectric coating filter arranged on the interior side of electrode |
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