CN113658846A

CN113658846A - Ultraviolet lamp

Info

Publication number: CN113658846A
Application number: CN202110971650.0A
Authority: CN
Inventors: 李立胜; 洪燕南; 黄天赐
Original assignee: Gmy Lighting Technology Co ltd
Current assignee: Gmy Lighting Technology Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2021-11-16

Abstract

The invention relates to the technical field of lamps, and discloses an ultraviolet lamp which comprises a cavity and a lamp for emitting ultraviolet light, wherein the lamp is arranged in the cavity, a gap is formed between the periphery of the lamp and the inner wall of the cavity to form an air flow channel, and the cavity is provided with an air inlet which is communicated with the interior of the cavity and is used for introducing inactive gas or oxygen and an air outlet for exhausting gas. According to the invention, the inert gas or oxygen is introduced into the cavity, and the gas flows along the airflow channel to take away heat generated during lighting of the lamp, so that a good heat dissipation effect is achieved, and in addition, the inert gas or oxygen can be selectively introduced according to actual use conditions; when inactive gas is introduced, the air can be extruded out, the influence of ultraviolet light on the efficiency of the lamp by the air absorption is avoided, the generation of peculiar smell caused by the generation of ozone and nitric oxide in the process is avoided, and the lamp has the characteristics of good lighting effect and high ultraviolet light transmission efficiency; when oxygen is introduced, air can be extruded out, the concentration of the oxygen is improved, and the generation efficiency of ozone is improved.

Description

Ultraviolet lamp

Technical Field

The invention relates to the technical field of lamps, in particular to an ultraviolet lamp.

Background

Ultraviolet lamps are a light source capable of generating ultraviolet light with a large effective range, and are widely applied to various industries due to the functions of sterilization, object surface cleaning, modification and the like. The existing ultraviolet lamps in the market are generally low-pressure mercury lamps, excimer lamps and the like, the low-pressure mercury lamps are low-pressure mercury lamps which emit ultraviolet light by being activated by utilizing lower mercury vapor pressure, the existing spectrums of the low-pressure mercury lamps are mainly 185nm and 253.7nm, the heat dissipation performance of the low-pressure mercury lamps is poor due to the sealing of the lamp tubes, and the service life of the low-pressure mercury lamps is influenced by overhigh temperature.

The excimer lamp, also called ultraviolet excimer lamp, uses the high pressure and high frequency outside the lamp tube to bombard the excimer gas in the lamp tube to emit ultraviolet ray, the spectrum which can be realized by filling different excimer gases into the lamp tube is 74 nm-354 nm, and because the photon energy of the ultraviolet ray emitted is higher than the bond energy of most organic molecules, it can realize the good optical cleaning and optical modification in the manufacture of semiconductor and liquid crystal screen, and can kill virus and bacteria, etc., and its treatment effect is good and its speed is fast. However, the excimer lamp has low excitation efficiency, and the temperature rise of the excimer lamp can cause the excitation efficiency to be reduced sharply, however, when the excimer lamp is used, the lamp tube can generate a large amount of heat to cause the temperature rise of the lamp tube, the temperature rise can accelerate the oxidation of the lamp tube electrode, the heat dissipation efficiency of the current excimer lamp is low, the temperature of the lamp tube cannot be reduced in time, and the service life of the excimer lamp is reduced.

In addition, no matter the low-pressure mercury lamp or the excimer lamp, when the wave band of ultraviolet rays emitted by the low-pressure mercury lamp or the excimer lamp is below 200nm, the air can absorb the ultraviolet rays to generate ozone and nitric oxide, under the use condition that the ultraviolet rays are not needed to generate the ozone, the generation of the ozone and the nitric oxide can influence the transmission efficiency of the ultraviolet rays and generate peculiar smell at the same time, so that the low-pressure mercury lamp or the excimer lamp is generally used in a vacuum environment to avoid the phenomenon, so that the use condition is harsh, and the low-pressure mercury lamp or the excimer lamp is not beneficial to wide application; in some use cases where ozone is generated by using ultraviolet light, the ozone generation efficiency is low due to low oxygen concentration in the air, and in addition, the ozone concentration is reduced due to the generation of nitrogen oxides, which affects the use effect of ozone.

Disclosure of Invention

The invention aims to provide an ultraviolet lamp which has good heat dissipation effect, good lighting effect and high efficiency and can be flexibly used according to actual conditions.

In order to achieve the purpose, the invention provides an ultraviolet lamp which comprises a cavity and a lamp for emitting ultraviolet light, wherein the lamp is arranged in the cavity, a gap is formed between the periphery of the lamp and the inner wall of the cavity to form an air flow channel, and the cavity is provided with an air inlet which is communicated with the interior of the cavity and is used for introducing inactive gas or oxygen and an air outlet which is used for exhausting gas.

As a preferred scheme of the present invention, the lamp includes a first electrode, a second electrode, and a plurality of lamps filled with discharge gas, the lamps are disposed around a central axis of the cavity, adjacent lamps are connected, a cavity is formed inside each lamp, and the first electrode and the second electrode are respectively sleeved on the plurality of lamps.

As a preferable scheme of the present invention, the inner wall of the cavity is covered with a reflective film.

As a preferred aspect of the present invention, the lamp includes a first electrode, a second electrode, and a plurality of lamps filled with discharge gas, the lamps are disposed around a central axis of the cavity, adjacent lamps are connected, a cavity is formed inside each lamp, the first electrode is sleeved on the lamps, the second electrode is disposed in the cavity, and the second electrode is provided with a through hole disposed along an axial direction of the lamp.

As a preferred aspect of the present invention, the lamp includes a first electrode, a second electrode, and a plurality of lamps filled with discharge gas, the lamps are disposed around a central axis of the cavity, adjacent lamps are connected, a cavity is formed inside each lamp, the first electrode and the second electrode are respectively disposed in the cavity, and the first electrode and the second electrode are respectively provided with through holes disposed along an axial direction of the lamp.

As a preferable scheme of the present invention, the inner wall of the cavity is covered with a light filtering film.

As a preferred scheme of the present invention, the lamp includes a first electrode, a second electrode, and a lamp tube filled with discharge gas, the lamp tube is in a cylindrical shape, an inner ring of the lamp tube forms a cavity, the first electrode is sleeved on the lamp tube, the second electrode is disposed in the cavity, the first electrode and the second electrode are disposed opposite to each other, and the second electrode is provided with a through hole disposed along an axial direction of the lamp tube.

In a preferred embodiment of the present invention, the lamp is a low-pressure mercury lamp.

As a preferable aspect of the present invention, the air inlet corresponds to one end of the lamp, and the air outlet corresponds to the other end of the lamp.

As a preferable aspect of the present invention, the air inlet is connected to one end of the cavity, the air outlet is provided outside the air inlet, and the air outlet corresponds to the air flow passage.

Compared with the prior art, the ultraviolet lamp has the beneficial effects that: inactive gas or oxygen enters the cavity through the air inlet, then flows along an air flow channel between the cavity and the lamp and is finally discharged from the air outlet, and the air flow channel is formed by gaps between the periphery of the lamp and the inner wall of the cavity, so that the gas can flow around the lamp in the process of flowing in the cavity, heat generated during the operation of the lamp can be taken away from the cavity, the heat dissipation of the lamp is facilitated, and the influence on the working efficiency and the service life of the lamp due to the temperature rise is effectively avoided; in addition, the invention can be flexibly used according to actual conditions, for example, under the use condition that ozone is generated without using ultraviolet light, inert gas is selectively introduced, the inert gas can extrude air in the cavity from the exhaust port, the phenomenon that the efficiency of the ultraviolet light emitted by the lamp is influenced by the fact that the air absorbs the ultraviolet light emitted by the lamp to generate ozone and nitric oxide is avoided, the transmission efficiency of the ultraviolet light emitted by the lamp is improved, and meanwhile, peculiar smell (the smell of the ozone and the nitric oxide) generated in the working process of the lamp can be avoided; under the use condition that ozone is generated by ultraviolet light, oxygen is selectively introduced, the oxygen can extrude the air in the cavity, nitrogen oxide is avoided being generated, meanwhile, the concentration of the oxygen in the cavity can be increased, and therefore the generation efficiency of the ozone is improved.

Drawings

FIG. 1 is a schematic diagram of the internal structure of a chamber according to a first embodiment of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic view of a lamp according to a first embodiment of the present invention;

fig. 4 is a schematic view of a connection structure of a fixing rod and a lamp according to a first embodiment of the invention;

FIG. 5 is a schematic diagram of the internal structure of a chamber according to a second embodiment of the present invention;

FIG. 6 is a cross-sectional view B-B of FIG. 5;

FIG. 7 is a schematic view of a lamp tube according to a second embodiment of the present invention;

FIG. 8 is a schematic diagram of the internal structure of a chamber according to a third embodiment of the present invention;

FIG. 9 is a longitudinal cross-sectional view C-C of FIG. 8;

FIG. 10 is a schematic view of the lighting tube according to the third embodiment of the present invention;

FIG. 11 is a schematic diagram of the internal structure of a chamber according to a fourth embodiment of the present invention;

FIG. 12 is a cross-sectional view D-D of FIG. 11;

FIG. 13 is a schematic view of the lighting tube according to the fourth embodiment of the present invention;

FIG. 14 is a schematic view of a connection structure of a cover and a chamber according to a fourth embodiment of the present invention;

FIG. 15 is a schematic diagram of the internal structure of a chamber according to a fifth embodiment of the present invention;

in the figure, 1, a cavity; 11. an air inlet; 12. an exhaust port; 13. a reflective film; 14. a light filtering film; 15. fixing the rod; 2. a light fixture; 21. a lamp tube; 22. a first electrode; 23. a second electrode; 24. a cavity; 25. a through hole; 3. an air flow channel.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the present invention adopts the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. based on the orientations or positional relationships shown in the drawings, only for convenience of description and simplification of description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in FIGS. 1-4, the first embodiment of the present invention is provided.

The utility model provides an ultraviolet lamp, includes cavity 1 and the lamps and lanterns 2 that are used for giving off the ultraviolet ray, generally, cavity 1 adopts the printing opacity material, and cavity 1 adopts quartzy in this embodiment, and is hard, wear-resisting, chemical stability, can also be other materials such as glass in addition, and lamps and lanterns 2 locate in the cavity 1 and lamps and lanterns 2 all around and cavity 1's inner wall between have the clearance to form airflow channel 3, cavity 1 be equipped with cavity 1's inside intercommunication be used for letting in the air inlet 11 of inert gas or oxygen and be used for exhaust gas's gas vent 12.

The working principle of the embodiment is as follows: oxygen or inert gas (such as nitrogen, helium, neon and other inert gases, which have relatively stable chemical properties and cannot be changed due to ultraviolet light irradiation) enters the cavity 1 through the air inlet 11, then flows along the air flow channel 3 between the cavity 1 and the lamp 2, and is finally discharged from the exhaust port 12, because the air flow channel 3 is formed by a gap between the periphery of the lamp 2 and the inner wall of the cavity 1, the air can flow around the lamp 2 in the flowing process of the air in the cavity 1, heat emitted by the lamp 2 during working can be taken away from the cavity 1, heat dissipation of the lamp 2 is facilitated, and the working efficiency and the service life of the lamp 2 are effectively prevented from being influenced by the temperature rise; the invention can be flexibly used according to the actual situation, for example, under the use condition that ozone is not generated by ultraviolet light (such as surface modification or cleaning treatment of objects), the inert gas is selectively introduced, the air in the cavity 1 can be extruded out from the exhaust port 12 by the inert gas, the influence of substances such as ozone and nitric oxide and the like generated by the ultraviolet light emitted by the lamp 2 absorbed by the air on the efficiency of the ultraviolet light emitted by the lamp 2 is avoided, the transmission efficiency of the ultraviolet light emitted by the lamp 2 is improved, and meanwhile, the generation of peculiar smell (odor of the ozone and the nitric oxide) in the working process of the lamp 2 can be avoided; under the use condition that ultraviolet light is required to generate ozone (such as for disinfection and sterilization), oxygen is introduced selectively, the oxygen can extrude the air in the cavity 1, nitrogen oxide is avoided, and meanwhile, the concentration of the oxygen in the cavity 1 can be increased, so that the generation efficiency of ozone is improved; the positions of the air inlet 11 and the air outlet 12 are not limited as long as the introduced air can flow along the air flow channel 3 in the chamber 1 and the air in the chamber 1 can be squeezed out.

In this embodiment, the lamp 2 includes a first electrode 22, a second electrode 23 and a plurality of lamps 21 filled with discharge gas, the lamps 21 are disposed around the central axis of the chamber 1, adjacent lamps 21 are connected, a cavity 24 is formed inside each lamp 21, the first electrode 22 and the second electrode 23 are respectively sleeved on the lamps 21, the first electrode 22 and the second electrode 23 are respectively connected with the outer side of each lamp 21, generally, the first electrode 22 is disposed at one end of each lamp 21, the second electrode 23 is disposed at the other end of each lamp 21, when the first electrode 22 and the second electrode 23 are respectively connected with a power supply, as shown in fig. 3, the discharge gas in each lamp 21 is bombarded and discharged, so that an arc is generated between the first electrode 22 and the second electrode 23 of each lamp 21, the arc bends toward the inner side of each lamp 21 and generates ultraviolet light at the same time, so that each lamp 21 mainly emits light toward the inner side thereof, the luminous efficacy of the lamp tube 21 is effectively improved, the irradiated object is arranged at the inner side of the lamp tube 21, and the ultraviolet light absorption efficiency is high.

Exemplarily, the air inlet 11 corresponds to one end of the lamp 2, the air outlet 12 corresponds to the other end of the lamp 2, and when inert gas or oxygen enters the cavity 1 from the air inlet 11, the inert gas or oxygen flows out from the air outlet 12 after flowing along the axial direction of the lamp 2, and is not blocked by the lamp 2, and the inert gas or oxygen does not need to turn during the flowing process, so that the flowing property of the gas is relatively higher, and the heat dissipation effect is better.

Because the adjacent lamp tubes 21 are connected to form the cavity 24 on the inner side of the lamp tube 21, when oxygen or inert gas enters the cavity 1 from the gas inlet 11, the gas flows into the cavity 24 in addition to flowing along the gas flow channel 3 between the cavity 1 and the lamp tube 21, that is, the gas flows through the inner side and the outer side of the lamp 2 at the same time, and the heat dissipation effect of the lamp 2 is effectively increased.

Exemplarily, the inner wall of cavity 1 is equipped with two dead levers 15 at least, dead lever 15 sets up around the center pin of cavity 1, dead lever 15 is connected with lamps and lanterns 2 respectively, in this embodiment, dead lever 15 sets up four, dead lever 15 centers on the center pin evenly distributed of cavity 1, dead lever 15 is close to the one end and the cooperation of lamps and lanterns 2, with lamps and lanterns 2 embedding cavity 1 in, a plurality of dead levers 15 are connected with lamps and lanterns 2 and are realized lamps and lanterns 2 fixed, do not block off air current passageway 3 simultaneously, install in cavity 1 for lamps and lanterns 2, the detachable end cover can be established into at the both ends of cavity 1 for convenient lamps and lanterns 2.

For example, the inner wall of the cavity 1 is covered with the reflective film 13, the lamp 2 in this embodiment is intensively irradiated to the inner side thereof, the reflective film 13 is disposed to reflect a small amount of light irradiated to the outer side of the lamp 2, so that the light is intensively irradiated to the object disposed at the inner side of the lamp tube 21, and the reflective film 13 can be disposed at a surface facing the main light irradiation surface of the lamp 2 according to the actual condition of the lamp 2, for example, in this embodiment, the main light irradiation surface of the lamp 2 is the inner side of the lamp tube 21, so the reflective film 13 can be disposed at the outer side of the lamp tube 21, and can also play a role of reflecting concentrated light.

As shown in FIGS. 5 to 7, the second embodiment of the present invention is provided.

The present embodiment is different from the first embodiment in that the lamp 2 includes a first electrode 22, a second electrode 23 and a plurality of lamps 21 filled with discharge gas, the lamps 21 are disposed around the central axis of the chamber 1, adjacent lamps 21 are connected, a cavity 24 is formed inside each lamp 21, the first electrode 22 is sleeved on the plurality of lamps 21, the first electrode 22 is connected to the outside of each lamp 21, the second electrode 23 is disposed in the cavity 24, the second electrode 23 is connected to the inside of each lamp 21, when the first electrode 22 and the second electrode 23 are connected to a power supply, as shown in fig. 7, an arc is generated between the first electrode 22 and the second electrode 23 of each lamp 21, the amount of light emitted from the arc to the inside and the amount of light emitted from the outside are close to each other, and the inside and the outside of the lamp 2 can be irradiated at the same time, the second electrode 23 is provided with a through hole 25 disposed along the axial direction of each lamp 21, the cavity 24 is prevented from being blocked by the second electrode 23, ensuring that the inert gas or oxygen can flow from the cavity 24 and the gas flow channel 3 simultaneously.

As shown in FIGS. 8 to 10, the third embodiment of the present invention is provided.

The difference between the present embodiment and the first embodiment is that the lamp 2 of the present embodiment includes a first electrode 22, a second electrode 23, and a plurality of lamps 21 filled with discharge gas, the lamps 21 are disposed around the central axis of the chamber 1, adjacent lamps 21 are connected, a cavity 24 is formed inside each lamp 21, the first electrode 22 and the second electrode 23 are respectively disposed in the cavity 24, the first electrode 22 and the second electrode 23 are respectively connected to the inside of each lamp 21, when the first electrode 22 and the second electrode 23 are respectively connected to a power supply, as shown in fig. 10, an arc is generated between the first electrode 22 and the second electrode 23 of each lamp 21, the middle portion of the arc bends toward the outside of the lamp 21 and is focused to emit light toward the outside of the lamp 21, the first electrode 22 and the second electrode 23 are respectively provided with through holes 25 disposed along the axial direction of the lamp 2, so as to prevent the cavity 24 from being blocked by the first electrode 22 and the second electrode 23, it is ensured that the inert gas or oxygen can flow from the cavity 24 and the gas flow passage 3 at the same time.

Illustratively, since the lamp 2 mainly emits light to the outside, the inner wall of the cavity 1 is covered with the filter 14, the filter 14 can filter the wavelength band of the light or only allow the light of a specific wavelength band to pass through, so as to retain the ultraviolet light of a desired specific wavelength band, such as 172nm, 185nm, and 222nm, and in addition, the filter 14 can be disposed on the main light-emitting irradiation surface of the lamp 2 according to the actual situation of the lamp 2, for example, in the embodiment, the main light-emitting irradiation surface of the lamp 2 is the outside of the lamp tube 21, so the filter 14 can be disposed on the outside of the lamp tube 21, and can also function to filter the wavelength band of the light.

As shown in FIGS. 11 to 14, the fourth embodiment of the present invention is provided.

A difference between the present embodiment and the first embodiment is that the lamp 2 of the present embodiment includes a first electrode 22, a second electrode 23 and a lamp tube 21 filled with discharge gas, the lamp tube 21 is in a cylindrical shape, an inner ring of the lamp tube 21 forms a cavity 24, the first electrode 22 is sleeved on the lamp tube 21, the first electrode 22 is in a mesh shape to avoid blocking light, the second electrode 23 is disposed in the cavity 24, the first electrode 22 and the second electrode 23 are disposed opposite to each other, when the first electrode 22 and the second electrode 23 are respectively connected to a power supply, as shown in fig. 12, the lamp tube 21 disperses between the first electrode 22 and the second electrode 23 to form a plurality of arcs, the illumination range is large, the second electrode 23 is provided with a through hole 25 disposed along an axial direction of the lamp tube 21 to ensure that an inert gas or oxygen can flow from the cavity 24 and the gas flow passage 3 simultaneously.

Illustratively, as shown in fig. 14, the air inlet 11 is connected with one end of the cavity 24, the air outlet 12 is arranged outside the air inlet 11, the air outlet 12 corresponds to the position of the air flow channel 3, and after entering from the air inlet 11, inert gas or oxygen directly enters the cavity 24 without entering the air flow channel 3 between the cavity 1 and the lamp 2 until the air flows to the other end of the cavity 1, it enters the airflow channel 3 and flows to one end of the air inlet 11, and finally is discharged from the air outlet 12 arranged at the outer side of the air inlet 11, so that the amount of gas introduced can be reduced on the premise that the heat dissipation effect is basically unchanged, it should be noted that the structure is not limited to this embodiment, as long as the lamp 2 is provided with the cavity 24, that is, the middle portion of the lamp 2 is provided with a cavity 24 with openings along two ends, and the structure is also applicable to the lamp 2 in the first to third embodiments.

As shown in fig. 15, embodiment five of the present invention.

The present embodiment is different from the first embodiment in that the lamp 2 of the present embodiment is a low-pressure mercury lamp, and the present invention is also applicable to a conventional low-pressure mercury lamp.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An ultraviolet lamp, characterized in that: including the cavity with be used for sending the lamps and lanterns of ultraviolet light, lamps and lanterns are located in the cavity just around the lamps and lanterns with there is the clearance to form airflow channel between the inner wall of cavity, the cavity be equipped with the inside intercommunication of cavity be used for letting in the air inlet of inert gas or oxygen and be used for the gas vent of exhaust.

2. The uv lamp according to claim 1, wherein: the lamp comprises a first electrode, a second electrode and a plurality of lamp tubes filled with discharge gas, the lamp tubes are arranged around the central axis of the cavity, the adjacent lamp tubes are connected, a cavity is formed on the inner side of each lamp tube, and the first electrode and the second electrode are respectively sleeved on the plurality of lamp tubes.

3. The uv lamp according to claim 2, wherein: and the inner wall of the cavity is covered with a reflecting film.

4. The uv lamp according to claim 1, wherein: the lamp comprises a first electrode, a second electrode and a plurality of lamp tubes filled with discharge gas, the lamp tubes are arranged around the central axis of the cavity, the adjacent lamp tubes are connected, a cavity is formed on the inner side of each lamp tube, the first electrode is sleeved on the lamp tubes, the second electrode is arranged in the cavity, and the second electrode is provided with through holes arranged along the axial direction of the lamp tubes.

5. The uv lamp according to claim 1, wherein: the lamp comprises a first electrode, a second electrode and a plurality of lamp tubes filled with discharge gas, the lamp tubes are arranged around the central axis of the cavity, the adjacent lamp tubes are connected, the inner sides of the lamp tubes form a cavity, the first electrode and the second electrode are respectively arranged in the cavity, and the first electrode and the second electrode are respectively provided with through holes arranged along the axial direction of the lamp.

6. The ultraviolet lamp according to claim 5, wherein: the inner wall of the cavity is covered with a light filtering film.

7. The uv lamp according to claim 1, wherein: the lamp comprises a first electrode, a second electrode and a lamp tube filled with discharge gas, the lamp tube is in a circular column shape, a cavity is formed in the inner ring of the lamp tube, the first electrode is sleeved on the lamp tube, the second electrode is arranged in the cavity, the first electrode and the second electrode are arranged oppositely, and the second electrode is provided with a through hole arranged along the axial direction of the lamp tube.

8. The uv lamp according to claim 1, wherein: the lamp is a low pressure mercury lamp.

9. The uv lamp according to any one of claims 1 to 8, wherein: the air inlet corresponds to one end of the lamp, and the air outlet corresponds to the other end of the lamp.

10. The uv lamp according to any one of claims 2 to 7, wherein: the air inlet with the one end of cavity is connected, the gas vent locate with the outside of air inlet, the gas vent with the air current passageway position corresponds.