CN214428597U - Novel double-sleeve ultraviolet lamp tube - Google Patents
Novel double-sleeve ultraviolet lamp tube Download PDFInfo
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- CN214428597U CN214428597U CN202120130211.2U CN202120130211U CN214428597U CN 214428597 U CN214428597 U CN 214428597U CN 202120130211 U CN202120130211 U CN 202120130211U CN 214428597 U CN214428597 U CN 214428597U
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Abstract
The utility model provides a novel double-sleeve ultraviolet lamp tube, which greatly improves a second electrode, compared with the traditional double-sleeve ultraviolet lamp tube, the second electrode of the novel double-sleeve ultraviolet lamp tube can be tightly attached to the inner surface or the outer surface of a second quartz glass tube, thereby effectively solving the problem that the second electrode is deviated; meanwhile, the distance between the second electrode and the first electrode is increased by the design of the second electrode, namely the electric field intensity between the second electrode and the first electrode is increased, so that mercury vapor or inert gas in the vacuum tube cavity is more easily ionized to excite ultraviolet rays; the metal cylinder, the metal net or the metal film as the second electrode can reflect the ultraviolet rays emitted from the vacuum tube cavity strongly, so that the ultraviolet rays are prevented from being absorbed or lost in the lamp tube. In addition, the first electrode is arranged on the inner surface of the first quartz glass tube, so that the first electrode can be effectively prevented from being polluted to influence light emission.
Description
Technical Field
The utility model relates to an ultraviolet lamp field, in particular to novel double cannula ultraviolet fluorescent tube.
Background
The ultraviolet lamp tube has good bactericidal effect and is widely applied to the fields of medical treatment, health and epidemic prevention, food industry, pharmaceutical industry and the like. The core components of the ultraviolet lamp tube are a quartz glass lamp tube and an electrode filament, and the sterilization principle is that mercury vapor or inert gas in the lamp tube generates two characteristic spectral lines with the wavelengths of 254nm and 185nm respectively after being excited, and 254nm ultraviolet rays destroy DNA of microorganisms through irradiation to kill bacteria; 185nm ultraviolet ray can change oxygen in air into ozone, and the strong oxidation of ozone is used to kill bacteria.
The structure of a conventional double-sleeve ultraviolet lamp tube is shown in fig. 1, fig. 1(a) is a longitudinal sectional view of the lamp tube, fig. 1(b) and fig. 1(c) are cross sectional views of the lamp tube, a supporting main part of the lamp tube is a first quartz glass tube 2 and a second quartz glass tube 4, a vacuum tube cavity 3 is formed between the first quartz glass tube 2 and the second quartz glass tube 4, the vacuum tube cavity 3 is filled with mercury vapor or inert gas, a second electrode 5 is fixed inside the second quartz glass tube 4, and generally, the second electrode 5 is a cylindrical metal rod. The first electrode 1 is fixed outside the first quartz glass tube 2, and after the first quartz glass tube is electrified, the strong electric field generated between the two electrodes ionizes the gas in the vacuum tube cavity 3, and the gas atoms are excited to generate ultraviolet rays. Ideally, the second electrode 5 is located as shown in fig. 1(b), that is, the second electrode 5 and the second quartz glass tube 4 are coaxially arranged, so as to ensure uniform light emission, however, it is difficult to accurately locate the second electrode 5 and the second quartz glass tube 4 coaxially, and the second electrode 5 is likely to shift with the use of the ultraviolet lamp tube, as shown in fig. 1(c), which causes non-uniform light emission and reduces the light emission intensity of the ultraviolet lamp tube.
Therefore, there is a need to provide a new dual-tube ultraviolet lamp tube to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, the present invention provides a novel double-tube ultraviolet lamp tube.
The novel double-sleeve ultraviolet lamp tube comprises a first quartz glass tube, a second quartz glass tube, a first electrode and a second electrode, wherein the second quartz glass tube is sleeved inside the first quartz glass tube, and the inner surface or the outer surface of the second quartz glass tube is tightly attached with the second electrode.
Specifically, the inner surface or the outer surface of the first quartz glass tube is tightly attached with a first electrode.
Specifically, the second electrode is a metal cylinder, a metal mesh or a metal film.
Optionally, one end of the first electrode and one end of the second electrode are connected to a first electrode lead and a second electrode lead, respectively.
Specifically, the first electrode is a metal mesh.
Specifically, the material of the first electrode and/or the second electrode is aluminum or stainless steel.
Optionally, the percentage of the area of the first electrode to the area of the outer surface of the first quartz glass tube is below 40%.
Optionally, the first electrode covers a part or the whole of the first quartz glass tube, and the second electrode covers a part or the whole of the second quartz glass tube.
Specifically, a sealed vacuum tube cavity is formed between the first quartz glass tube and the second quartz glass tube, and mercury vapor or inert gas is filled in the vacuum tube cavity.
Optionally, the left end and the right end of the second quartz glass tube are respectively fixed to the left end and the right end of the first quartz glass tube, and the second quartz glass tube and the first quartz glass tube are coaxially arranged.
As mentioned above, the utility model discloses a novel double cannula ultraviolet fluorescent tube has following beneficial effect: the novel double-sleeve ultraviolet lamp tube greatly improves the second electrode, and compared with the traditional double-sleeve ultraviolet lamp tube, the second electrode of the novel double-sleeve ultraviolet lamp tube can be tightly attached to the inner surface or the outer surface of the second quartz glass tube, so that the problem that the second electrode is deviated is effectively solved; meanwhile, compared with the traditional double-sleeve ultraviolet lamp tube, the design of the second electrode of the novel double-sleeve ultraviolet lamp tube increases the distance between the second electrode and the first electrode, namely the electric field intensity between the second electrode and the first electrode is increased, and under the same working voltage, mercury vapor or inert gas in the vacuum tube cavity is easier to ionize to excite ultraviolet rays; the metal cylinder, the metal net or the metal film as the second electrode can reflect the ultraviolet rays emitted from the vacuum tube cavity strongly, so that the ultraviolet rays are emitted from the lamp tube, and the ultraviolet rays are prevented from being absorbed or lost in the lamp tube. In addition, the first electrode is arranged on the inner surface of the first quartz glass tube, so that the first electrode can be effectively prevented from being polluted to influence light emission.
Drawings
Fig. 1 shows a conventional double tube ultraviolet lamp tube structure.
Fig. 2 is a schematic view showing the arrangement of the second electrode of the novel double-tube ultraviolet lamp tube.
Fig. 3 shows a schematic diagram of a first electrode structure of the novel double-tube ultraviolet lamp tube.
Fig. 4 is a schematic view showing the arrangement of the first electrode of the novel double-tube ultraviolet lamp tube.
Description of the element reference numerals
1 first electrode
2 first quartz glass tube
3 vacuum tube cavity
4 second quartz glass tube
5 second electrode
6 second electrode lead
7 first electrode lead
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and only the components related to the present invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.
Example one
In this embodiment, as shown in fig. 2, fig. 2(a) and fig. 2(b) are longitudinal sectional views of the lamp tube, and fig. 2(c) and fig. 2(d) are cross-sectional views of the lamp tube. The ultraviolet lamp tube comprises a first quartz glass tube 2 and a second quartz glass tube 4, wherein the second quartz glass tube 4 is sleeved inside the first quartz glass tube 2, the left end and the right end of the second quartz glass tube 4 are respectively fixed at the left end and the right end of the first quartz glass tube 2, and the second quartz glass tube 4 and the first quartz glass tube 2 are coaxially arranged. A sealed vacuum chamber 3 is formed between the first quartz glass tube 2 and the second quartz glass tube 4, and the vacuum chamber 3 is filled with mercury vapor or inert gas (e.g., krypton gas Kr). The outer surface of the first quartz glass tube 2 is wrapped with a first electrode 1, one ends of the first electrode 1 and the second electrode 5 are respectively connected with a first electrode lead 7 and a second electrode lead 6, and the first electrode lead 7 and the second electrode lead 6 are connected with a power supply. In the present embodiment, two placing manners of the second electrode 5 are provided, and as shown in fig. 2(a) and fig. 2(c), a first placing manner of the second electrode 5 is provided, that is, the second electrode 5 is tightly attached to the outer surface of the second quartz glass tube 4; as shown in fig. 2(b) and 2(d), the second electrode 5 is placed in a second manner such that the second electrode 5 is closely attached to the inner surface of the second quartz glass tube 4. Specifically, the second electrode 5 may be a cylindrical metal tube, a tightly woven metal mesh, or a metal film formed by a plating method such as electroplating or spray coating. Compared with the traditional double-sleeve ultraviolet lamp tube, the second electrode 5 of the novel double-sleeve ultraviolet lamp tube has the following advantages: firstly, the second electrode 5 of the novel double-sleeve ultraviolet lamp tube can be tightly attached to the inner surface or the outer surface of the second quartz glass tube 4, so that the problem that the second electrode 5 is deviated is effectively solved; secondly, compared with the traditional double-sleeve ultraviolet lamp tube, the design of the second electrode 5 of the novel double-sleeve ultraviolet lamp tube increases the distance between the second electrode 5 and the first electrode 1, namely the electric field intensity between the second electrode 5 and the first electrode 1 is increased, and under the same working voltage, mercury vapor or inert gas in the vacuum tube cavity 3 is more easily ionized to excite ultraviolet rays; thirdly, the metal tube, the metal mesh or the metal film as the second electrode 5 can reflect the ultraviolet rays emitted from the vacuum tube cavity 3 strongly, so that the ultraviolet rays are emitted from the lamp tube, and the ultraviolet rays are prevented from being absorbed or lost in the lamp tube. The preferred material of the second electrode 5 is aluminum metal or stainless steel, especially aluminum metal with surface oxidation polishing treatment, because aluminum has the largest reflection coefficient and the smallest absorption coefficient to ultraviolet light, so that the best reflection effect can be achieved.
Further, the first electrode 1 is a metal mesh, as shown in fig. 3, which is a schematic structural diagram of the first electrode 1, and the unit cell of the first electrode 1 may be diamond-shaped, hexagonal-shaped, or other geometric shapes. The preferred material of the metal mesh of the first electrode 1 is also metallic aluminum or stainless steel, consistent with the material selected for the second electrode 5, to achieve the best uv emission effect. In addition, the area of the first electrode 1 is limited to the percentage of the area of the outer surface of the first quartz glass tube 2, because the dense metal mesh blocks the light emitted from the ultraviolet rays. Preferably, the percentage of the area of the first electrode 1 to the area of the outer surface of the first quartz glass tube 2 is 40% or less.
It should be noted that the first electrode 1 and the second electrode 5 may not necessarily cover the whole quartz glass tube, that is, the first electrode 1 may cover part or the whole of the first quartz glass tube 2, and the second electrode 5 may cover part or the whole of the second quartz glass tube 4.
Example two
The present embodiment provides a novel double-tube ultraviolet lamp tube, which is different from the first embodiment in that, in the present embodiment, on the basis of the first embodiment, the position of the first electrode 1 is changed, so that the first electrode 1 is tightly attached to the inner surface of the first quartz glass tube 2. As shown in fig. 4, fig. 4(a) is a longitudinal sectional view of the lamp tube, and fig. 4(b) is a cross-sectional view of the lamp tube. The first electrode 1 is arranged on the inner surface of the first quartz glass tube 2, so that the first electrode 1 can be effectively prevented from being polluted to influence light emission. In fig. 4, only the first electrode 1 is disposed on the inner surface of the first quartz glass tube 2 in the case where the second electrode 5 is closely attached to the inner surface of the second quartz glass tube 4. The first electrode 1 may also be arranged on the inner surface (not shown) of the quartz glass tube 2, while the second electrode 5 is arranged against the outer surface of the second quartz glass tube 4. I.e. both the first electrode 1 and the second electrode 5 can be arranged on the inner or outer surface of the quartz glass tube, in practice with a greater selectivity.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a novel double cannula ultraviolet fluorescent tube, includes first quartz glass pipe (2), second quartz glass pipe (4), first electrode (1) and second electrode (5), second quartz glass pipe (4) cover is established inside first quartz glass pipe (2), its characterized in that, the internal surface or the surface of second quartz glass pipe (4) are hugged closely and are had second electrode (5).
2. A novel double-tube ultraviolet lamp tube as claimed in claim 1, characterized in that the first electrode (1) is tightly attached to the inner surface or the outer surface of the first quartz glass tube (2).
3. A novel double-tube ultraviolet lamp tube as claimed in claim 1, characterized in that the second electrode (5) is a metal tube, a metal mesh or a metal film.
4. A novel double-tube ultraviolet lamp tube as claimed in claim 1, characterized in that one end of the first electrode (1) and one end of the second electrode (5) are respectively connected with a first electrode lead (7) and a second electrode lead (6).
5. A novel double-tube ultraviolet lamp tube as claimed in claim 2, characterized in that the first electrode (1) is a metal mesh.
6. A novel double-tube ultraviolet lamp tube as claimed in claim 2, characterized in that the material of the first electrode (1) and/or the second electrode (5) is aluminum or stainless steel.
7. A novel double-tube ultraviolet lamp tube as claimed in claim 2, characterized in that the area of the first electrode (1) accounts for less than 40% of the area of the outer surface of the first quartz glass tube (2).
8. A novel double-tube ultraviolet lamp tube as claimed in claim 2, characterized in that the first electrode (1) covers a part or the whole of the first quartz glass tube (2), and the second electrode (5) covers a part or the whole of the second quartz glass tube (4).
9. A novel double-tube ultraviolet lamp tube as claimed in claim 1, characterized in that a sealed vacuum tube cavity (3) is formed between the first quartz glass tube (2) and the second quartz glass tube (4), and the vacuum tube cavity (3) is filled with mercury vapor or inert gas.
10. The novel double-sleeve ultraviolet lamp tube as claimed in claim 1, wherein the left and right ends of the second quartz glass tube (4) are respectively fixed at the left and right ends of the first quartz glass tube (2), and the second quartz glass tube (4) is coaxially arranged with the first quartz glass tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120130211.2U CN214428597U (en) | 2021-01-18 | 2021-01-18 | Novel double-sleeve ultraviolet lamp tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120130211.2U CN214428597U (en) | 2021-01-18 | 2021-01-18 | Novel double-sleeve ultraviolet lamp tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214428597U true CN214428597U (en) | 2021-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120130211.2U Active CN214428597U (en) | 2021-01-18 | 2021-01-18 | Novel double-sleeve ultraviolet lamp tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214428597U (en) |
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2021
- 2021-01-18 CN CN202120130211.2U patent/CN214428597U/en active Active
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