Multi-pulse discharge wide spectrum adjustable ultraviolet light source device

Abstract

The present invention relates to the technical field of ultraviolet light sources, and in particular to a multi-pulse discharge wide-spectrum adjustable ultraviolet light source device, comprising a vacuum module, a focusing module and a discharge module, wherein the vacuum module comprises a vacuum seat, the focusing module is installed in a vacuum cavity of the vacuum seat, the focusing module comprises a reflective cup and a focusing lens arranged on the upper side of the reflective cup, the discharge module is arranged in the reflective cup, the discharge module comprises a ceramic tube and a discharge electrode, and the discharge electrode is arranged inside the ceramic tube. The present invention adopts the above-mentioned multi-pulse discharge wide-spectrum adjustable ultraviolet light source device, and the ultraviolet light emitted has a wide wavelength range and the luminous intensity is easy to adjust, thereby solving the problems existing in the mercury lamp and UV-LED light source in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of ultraviolet light sources, in particular to a multi-pulse discharge wide-spectrum adjustable ultraviolet light source device. Background Art

[0002] Existing ultraviolet light source technologies mainly include UV-LED light sources and mercury lamps. Mercury lamps have the disadvantages of short life and heavy metal mercury as a pollutant. UV-LED light sources have the disadvantages of large device size due to the array of lamp beads, and the lamp beads cannot be used after being damaged. Therefore, it is necessary to design a new device for generating ultraviolet light that can meet the flexible needs of light generation under different conditions. Summary of the invention

[0003] The purpose of the present invention is to provide a multi-pulse discharge wide-spectrum adjustable ultraviolet light source device, which emits ultraviolet light with a wide wavelength range and easy to adjust the luminous intensity, thereby solving the problems existing in mercury lamps and UV-LED light sources in the prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides a multi-pulse discharge wide-spectrum adjustable ultraviolet light source device, comprising a vacuum module, a focusing module and a discharge module, the vacuum module comprising a vacuum seat, the focusing module being installed in a vacuum cavity of the vacuum seat, the focusing module comprising a reflective cup and a focusing lens arranged on the upper side of the reflective cup, the discharge module being arranged in the reflective cup, the discharge module comprising a ceramic tube and a discharge electrode, and the discharge electrode being penetrated into the interior of the ceramic tube.

[0005] Preferably, the vacuum module includes a vacuum seat, a connecting base and a sealing pressure ring. A connecting ring is provided on the top of the vacuum seat. The sealing pressure ring is detachably connected to the upper side of the connecting ring. The connecting base is threadedly connected to the bottom of the vacuum seat. A sealing rubber ring is provided between the connecting base and the vacuum seat.

[0006] Preferably, the connecting ring is provided with a plurality of evenly distributed connecting holes 1, the sealing pressure ring is provided with a connecting hole 2, and a bolt assembly connected to the connecting hole 1 is penetrated through the connecting hole 2.

[0007] Preferably, a vacuum chamber is provided in the middle of the vacuum seat, a limit platform is provided on the top of the inner wall of the vacuum chamber, a connecting internal thread is provided at the lower part of the vacuum chamber, the connecting base includes a sealing part and a connecting part, the sealing part is arranged on the lower side of the connecting part, and a connecting external thread corresponding to the connecting internal thread is provided on the connecting part.

[0008] Preferably, the reflective cup includes a cup body and a positioning column, the positioning column is fixedly connected to the bottom of the cup body, a mounting hole 1 is provided in the middle of the connecting base, and the positioning column is threadedly connected to the upper side of the mounting hole 1.

[0009] Preferably, the focusing lens is arranged on the upper side of the limiting platform, a second sealing rubber ring is arranged between the focusing lens and the limiting platform, and a third sealing rubber ring is arranged between the focusing lens and the sealing pressure ring.

[0010] Preferably, a second mounting hole is provided in the middle of the reflective cup positioning column, the second mounting hole is communicated with the cup body of the reflective cup, the ceramic tube includes a tube body and a limiting plate connected to the top of the tube body, the tube body is passed through the second mounting hole, and the limiting plate is located at the bottom of the cup body.

[0011] Preferably, an electrode hole one is provided in the middle of the ceramic tube, and a plurality of evenly distributed electrode holes two are provided outside the circumference of the electrode hole one. The discharge electrode includes a discharge anode and a discharge cathode. The discharge anode is installed in the electrode hole one, and the discharge cathode is installed in the electrode hole two.

[0012] Preferably, the surface of the limiting plate of the ceramic tube is sprayed with a carbon coating, and the material of the discharge electrode includes one or more of titanium, copper, iron, tungsten and aluminum.

[0013] Preferably, a ventilation wiring module is fixedly connected to the bottom of the connecting base, and the ventilation wiring module includes a wiring plate and a ventilation pipe. The wiring plate is connected to the bottom of the mounting hole one by threads, and a center hole is provided in the middle of the wiring plate. A number of evenly distributed wiring holes are provided on the circumferential outside of the center hole. The ventilation pipe is installed in the center hole, and an electric-controlled valve connected to the ventilation pipe is also provided on one side of the center hole. One end of the ventilation pipe extends into the mounting hole one, and the other end of the ventilation pipe is connected to the air pump.

[0014] Mechanism of the present invention:

[0015] The multi-pulse discharge wide-spectrum adjustable ultraviolet light source device provided by the present invention performs pulse discharge in a vacuum module through a discharge module. During discharge, due to the high current density of the discharge cathode, the heat generated causes the metal at that point to vaporize to form a metal vapor arc. The external electrons of the ejected metal atoms or ions transition to release energy and radiate ultraviolet rays. The ultraviolet rays are projected out by adjusting the light path through a focusing module.

[0016] Beneficial effects of the present invention:

[0017] (1) The multi-pulse discharge wide-spectrum adjustable ultraviolet light source device provided by the present invention obtains ultraviolet light by utilizing the plasma generated by pulse discharge ablating a metal discharge electrode and the method of generating ultraviolet radiation by electron transition. The wavelength range of the ultraviolet light can be adjusted by selecting discharge electrodes of different metals for ablation, and the luminous intensity of the ultraviolet light can be adjusted by adjusting the current size, thereby improving the problems existing in the current mercury lamp and UVLED light source.

[0018] (2) The multi-pulse discharge wide-spectrum adjustable ultraviolet light source device provided by the present invention has a high intensity ultraviolet light source, is environmentally friendly, and low cost, can achieve a wide wavelength coverage range, and is safe and reliable.

[0019] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of an explosion of a multi-pulse discharge wide-spectrum adjustable ultraviolet light source device of the present invention;

[0021] Figure 2 is a schematic diagram of a vacuum seat of the present invention;

[0022] Figure 3 is a schematic diagram of a connection base of the present invention;

[0023] Figure 4 is a top view of the reflective cup of the present invention;

[0024] Figure 5 is a cross-sectional view of the reflective cup of the present invention;

[0025] Figure 6 is a schematic diagram of a discharge module of the present invention;

[0026] Figure 7 is a schematic diagram of a ceramic tube of the present invention;

[0027] Figure 8 Schematic diagram of the ventilation wiring module of the present invention.

[0028] Reference numerals:

[0029] 1. Vacuum module; 11. Vacuum seat; 111. Connecting ring; 112. Connecting hole 1; 113. Vacuum chamber; 114. Limiting platform; 12. Connecting base; 121. Sealing part; 122. Connecting part; 123. Mounting hole 1; 13. Sealing pressure ring; 14. Bolt assembly; 15. Sealing rubber ring 1;

[0030] 2. Focusing module; 21. Reflecting cup; 211. Cup body; 212. Positioning column; 213. Mounting hole 2; 22. Focusing lens; 23. Sealing rubber ring 2; 24. Sealing rubber ring 3;

[0031] 3. Discharge module; 31. Ceramic tube; 311. Tube body; 312. Stop plate; 313. Electrode hole 1; 314. Electrode hole 2; 32. Discharge electrode; 321. Discharge anode; 322. Discharge cathode;

[0032] 4. Ventilation wiring module; 41. Wiring board; 411. Center hole; 412. Wiring hole; 42. Ventilation pipe; 43. Electric control valve. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and embodiments. Unless otherwise defined, the technical terms or scientific terms used in the present invention should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs. The above-mentioned features or features mentioned in the specific examples mentioned in the present invention can be combined arbitrarily, and these specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0034] Example

[0035] See also Figures 1 to 8 As shown in the figure, the present invention provides a multi-pulse discharge wide-spectrum adjustable ultraviolet light source device, including a vacuum module 1, a focusing module 2 and a discharge module 3. The vacuum module 1 includes a vacuum seat 11, a connecting base 12 and a sealing pressure ring 13. The focusing module 2 is installed in the vacuum chamber 113 of the vacuum seat 11. The focusing module 2 includes a reflective cup 21 and a focusing lens 22 arranged on the upper side of the reflective cup 21. The discharge module 3 is arranged in the reflective cup 21. The discharge module 3 includes a ceramic tube 31 and a discharge electrode 32. The discharge electrode 32 is inserted into the interior of the ceramic tube 31. The bottom of the connecting base 12 is fixedly connected to the ventilation wiring module 4, and the power line enters the vacuum chamber 113 through the ventilation wiring module 4 and is connected to the discharge electrode 32. The power supply is a high-voltage pulse power supply, which generates plasma through pulse discharge in a vacuum environment through the discharge electrode 32. The plasma radiates ultraviolet light without the participation of gas, has a high degree of integration, and has a long service life.

[0036] A connecting ring 111 is provided on the top of the vacuum seat 11, and a sealing pressure ring 13 is detachably connected to the upper side of the connecting ring 111. A plurality of evenly distributed connecting holes 112 are provided on the connecting ring 111, and a connecting hole 2 is provided on the sealing pressure ring 13. A bolt assembly 14 connected to the connecting hole 112 is passed through the connecting hole 2. The sealing pressure ring 13 is fixedly connected to the connecting ring 111 by the bolt assembly 14, which stably connects the sealing pressure ring 13 to the top of the vacuum seat 11, and also facilitates the installation and disassembly of the sealing pressure ring 13, and facilitates the maintenance of the entire device.

[0037] A vacuum chamber 113 is provided in the middle of the vacuum seat 11, a limiting platform 114 is provided on the top of the inner wall of the vacuum chamber 113, a focusing lens 22 is provided on the upper side of the limiting platform 114, a sealing rubber ring 23 is provided between the focusing lens 22 and the limiting platform 114, and a sealing rubber ring 3 24 is provided between the focusing lens 22 and the sealing pressure ring 13. The inner diameter of the sealing pressure ring 13 is smaller than the inner diameter of the connecting ring 111, and the focusing lens 22 is fixed on the top of the vacuum chamber 113 by the cooperation of the sealing pressure ring 13 and the limiting platform 114. The setting of the sealing rubber ring 23 and the sealing rubber ring 3 24 improves the stability of the focusing lens 22 and also realizes the sealing of the top of the vacuum chamber 113.

[0038] The lower part of the vacuum chamber 113 is provided with a connecting internal thread 1, and the connecting base 12 includes a sealing part 121 and a connecting part 122. The sealing part 121 is arranged at the lower side of the connecting part 122, and the connecting part 122 is provided with a connecting external thread 1 corresponding to the connecting internal thread 1. The connecting base 12 is threadedly connected to the bottom of the vacuum seat 11, and a sealing rubber ring 15 is arranged between the connecting base 12 and the vacuum seat 11. The connecting base 12 blocks the bottom of the vacuum chamber 113, and the tightness of the connection between the connecting base 12 and the vacuum seat 11 is further improved by arranging the sealing rubber ring 15.

[0039] The reflective cup 21 is located in the vacuum chamber 113 and at the lower side of the focusing lens 22. The reflective cup 21 includes a cup body 211 and a positioning column 212. The positioning column 212 is fixedly connected to the bottom of the cup body 211. A mounting hole 123 is provided in the middle of the connecting base 12. The positioning column 212 is threadedly connected to the upper side of the mounting hole 123. The positioning column 212 cooperates with the connecting base 12 to fix the reflective cup 21 inside the vacuum chamber 113, thereby improving the stability of the reflective cup 21.

[0040] A second mounting hole 213 is provided in the middle of the positioning column 212 of the reflective cup 21, and the second mounting hole 213 is communicated with the cup body 211 of the reflective cup 21. The ceramic tube 31 includes a tube body 311 and a stop plate 312 connected to the top of the tube body 311. The tube body 311 is inserted into the second mounting hole 213, and the stop plate 312 is located at the bottom of the cup body 211. The surface of the stop plate 312 is sprayed with a carbon coating, which is conducive to electrical conduction. An electrode hole 1 313 is provided in the middle of the ceramic tube 31, and a plurality of evenly distributed electrode holes 2 314 are provided outside the circumference of the electrode hole 1 313. The discharge electrode 32 includes a discharge anode 321 and a discharge cathode 322. The discharge anode 321 is installed in the electrode hole 1 313, and the discharge cathode 322 is installed in the electrode hole 2 314. The discharge anode 321 is a common anode of a plurality of discharge cathodes 322 . The discharge anode 321 and the discharge cathode 322 may be made of the same metal material or different metal materials. In the present embodiment, the discharge anode 321 and the discharge cathode 322 are both made of metal titanium.

[0041] The ventilation wiring module 4 includes a wiring plate 41 and a ventilation pipe 42. The wiring plate 41 is connected to the bottom of the mounting hole 123 by threads. A center hole 411 is provided in the middle of the wiring plate 41. A plurality of evenly distributed wiring holes 412 are provided on the outer side of the circumference of the center hole 411. Sealing gaskets are provided on the inner sides of the center hole 411 and the wiring holes 412. The sealing gaskets are prior art and are not shown in the drawings. The power cord enters the vacuum chamber 113 through the wiring hole 412 and is connected to the discharge electrode 32. In the present embodiment, each discharge cathode 322 is connected to a different power source through a power cord.

[0042] The ventilation pipe 42 is installed in the center hole 411. One side of the center hole 411 is also provided with an electric control valve 43 connected to the ventilation pipe 42. The electric control valve 43 controls the opening and closing of the ventilation pipe 42 through the existing technology. One end of the ventilation pipe 42 extends into the installation hole 123. The other end of the ventilation pipe 42 is connected to the air pump through the existing technology. The vacuum chamber 113 is evacuated to a vacuum environment by the air pump.

[0043] Specific working process:

[0044] After the multi-pulse discharge wide-spectrum ultraviolet light source device is installed according to the above structure, the electric control valve 43 is opened first, the air pump is started, and the vacuum chamber 113 is evacuated to a vacuum environment. Then, the electric control valve 43 is closed, and the high-voltage pulse power supply is turned on. The discharge electrode 32 performs pulse discharge in the vacuum module 1, and the metal on the discharge cathode 322 is vaporized to form a metal vapor arc. The external electron transitions of the ejected metal atoms or ions release energy and radiate ultraviolet rays. The ultraviolet rays are projected after the optical path is adjusted by the focusing module 2.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. Multi-pulse discharge wide spectrum adjustable ultraviolet light source device, characterized by: It includes a vacuum module, a focusing module and a discharge module. The vacuum module includes a vacuum seat. The focusing module is installed in a vacuum cavity of the vacuum seat. The focusing module includes a reflective cup and a focusing lens arranged on the upper side of the reflective cup. The discharge module is arranged in the reflective cup. The discharge module includes a ceramic tube and a discharge electrode. The discharge electrode is arranged inside the ceramic tube. The surface of the limit plate of the ceramic tube is sprayed with a carbon coating, and the material of the discharge electrode includes one or more of titanium, copper, iron, tungsten and aluminum; The vacuum module includes a vacuum seat, a connecting base and a sealing pressure ring. A connecting ring is provided on the top of the vacuum seat. The sealing pressure ring is detachably connected to the upper side of the connecting ring. The connecting base is threadedly connected to the bottom of the vacuum seat. A sealing rubber ring is provided between the connecting base and the vacuum seat. The reflective cup includes a cup body and a positioning column, the positioning column is fixedly connected to the bottom of the cup body, a mounting hole 1 is provided in the middle of the connecting base, and the positioning column is threadedly connected to the upper side of the mounting hole 1; A ventilation wiring module is fixedly connected to the bottom of the connecting base, and the ventilation wiring module includes a wiring plate and a ventilation pipe. The wiring plate is connected to the bottom of the mounting hole one by threads. A center hole is provided in the middle of the wiring plate, and a number of evenly distributed wiring holes are provided on the circumferential outside of the center hole. The ventilation pipe is installed in the center hole, and an electric control valve connected to the ventilation pipe is also provided on one side of the center hole. One end of the ventilation pipe extends into the mounting hole one, and the other end of the ventilation pipe is connected to the air pump.

2. The multi-pulse discharge wide-spectrum adjustable ultraviolet light source device according to claim 1, characterized in that: The connecting ring is provided with a plurality of evenly distributed connecting holes 1, the sealing pressure ring is provided with connecting hole 2, and a bolt assembly connected with the connecting hole 1 is penetrated through the connecting hole 2.

3. The multi-pulse discharge wide-spectrum adjustable ultraviolet light source device according to claim 1, characterized in that: A vacuum chamber is provided in the middle of the vacuum seat, a limit platform is provided on the top of the inner wall of the vacuum chamber, a connecting internal thread 1 is provided at the lower part of the vacuum chamber, the connecting base includes a sealing part and a connecting part, the sealing part is arranged on the lower side of the connecting part, and a connecting external thread 1 corresponding to the connecting internal thread 1 is provided on the connecting part.

4. The multi-pulse discharge wide-spectrum adjustable ultraviolet light source device according to claim 3, characterized in that: The focusing lens is arranged on the upper side of the limiting platform, a second sealing rubber ring is arranged between the focusing lens and the limiting platform, and a third sealing rubber ring is arranged between the focusing lens and the sealing pressure ring.

5. The multi-pulse discharge wide-spectrum adjustable ultraviolet light source device according to claim 1, characterized in that: A second mounting hole is provided in the middle of the reflective cup positioning column, which is communicated with the cup body of the reflective cup. The ceramic tube includes a tube body and a limit plate connected to the top of the tube body. The tube body is passed through the second mounting hole, and the limit plate is located at the bottom of the cup body.

6. The multi-pulse discharge wide-spectrum adjustable ultraviolet light source device according to claim 5, characterized in that: An electrode hole 1 is arranged in the middle of the ceramic tube, and a plurality of electrode holes 2 are evenly distributed outside the circumference of the electrode hole 1. The discharge electrode comprises a discharge anode and a discharge cathode. The discharge anode is installed in the electrode hole 1, and the discharge cathode is installed in the electrode hole 2.

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