CN112967921A

CN112967921A - Waveguide device and microwave excitation high-energy C-section UV lamp

Info

Publication number: CN112967921A
Application number: CN202110234030.9A
Authority: CN
Inventors: 姚忠萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-06-15

Abstract

The invention discloses a waveguide and a microwave-excited high-energy C-section UV lamp applying the waveguide, wherein the UV lamp comprises a lamp shell, a C-section UV lamp tube, a microwave generator and a waveguide, the waveguide comprises a waveguide shell, a scattering device and a refraction focusing device, one end of the waveguide shell is provided with a microwave inlet corresponding to the microwave generator, and the other end of the waveguide shell is provided with a microwave outlet corresponding to the C-section UV lamp tube; the scattering device is arranged in the waveguide shell and used for scattering microwaves; the refraction focusing device is arranged in the waveguide shell and positioned between the scattering device and the microwave outlet, and is used for focusing the microwaves on the C-section UV lamp tube. The microwave generated by the microwave generator is scattered when passing through the scattering device, so that the energy of the microwave is uniformly distributed, and after passing through the refraction focusing device, the microwave energy is focused on the C-section UV lamp tube in a concentrated manner under the refraction action of the refraction focusing device, so that the light emitting effect of the C-section UV lamp tube is improved.

Description

Waveguide device and microwave excitation high-energy C-section UV lamp

Technical Field

The invention relates to the technical field of lamps, in particular to a waveguide and a microwave excitation high-energy C-section UV lamp applying the waveguide.

Background

The microwave exciting ultraviolet light source is one ultraviolet light source to ionize dilute gas in high energy microwave field to produce light, and its lamp tube has no filament and no electrode and is filled with small amount of igniting gas and light emitting matter. The ultraviolet lamp tube with the electrode is damaged due to light attenuation caused by volatilization of electrode materials in the using process. Therefore, the life of the ultraviolet lamp tube with the electrode is only about one thousand hours, and the life of the electrodeless ultraviolet lamp tube is at least over ten thousand hours. However, the waveguide devices of the existing ultraviolet lamps all adopt a structure for reflecting microwaves, the microwave concentration ratio is not high, the light emitting effect of the ultraviolet lamps is poor, and particularly, for C-section UV lamps generating C-section ultraviolet rays, the light emitting effect is poor when the waveguide devices adopting the structure for reflecting microwaves are adopted.

Disclosure of Invention

In view of the above, the present invention is directed to a waveguide with high microwave concentration and a microwave-excited high-energy C-band UV lamp with excellent light extraction effect.

The technical scheme adopted by the invention for solving the technical problem is as follows:

a microwave excitation high-energy C-section UV lamp comprises a lamp shell, a C-section UV lamp tube, a microwave generator and a waveguide, wherein the waveguide comprises:

one end of the waveguide shell is provided with a microwave inlet corresponding to the microwave generator, and the other end of the waveguide shell is provided with a microwave outlet corresponding to the C-section UV lamp tube;

the scattering device is arranged in the waveguide shell and used for scattering microwaves;

and the refraction focusing device is arranged in the waveguide shell, is positioned between the scattering device and the microwave outlet and is used for focusing the microwaves on the C-section UV lamp tube.

In a preferred embodiment of the present invention, a reflector surrounding the C-segment UV lamp tube is disposed in the lamp housing, and a waveguide corresponding to the microwave outlet is disposed on the reflector.

In a preferred embodiment of the present invention, the scattering device comprises at least two scattering sheets parallel to each other.

In a preferred embodiment of the present invention, the refractive focusing device includes two focusing mirrors.

In a preferred embodiment of the present invention, a heat dissipation system capable of dissipating heat of the C-segment UV lamp tube and the waveguide is disposed in the lamp housing.

In a preferred embodiment of the present invention, the lamp housing is provided with an air outlet and an air inlet communicated with the inner cavity of the reflector, the waveguide housing is provided with an air guide opening, the air inlet, the inner cavity of the reflector, the wave guide opening, the microwave outlet, the air guide opening, the inner cavity of the lamp housing, and the air outlet form a heat dissipation channel, and the heat dissipation system includes the heat dissipation channel and a fan disposed at the air outlet.

In a preferred embodiment of the present invention, the length of the C-section UV lamp tube is 60cm to 300 cm.

In a preferred embodiment of the present invention, the ultraviolet light generated by the C-band UV lamp tube is C-band short-wave ultraviolet light.

The invention has the beneficial effects that:

the microwave energy is focused on the C-section UV lamp tube in a concentrated manner under the refraction action of the refraction focusing device after passing through the refraction focusing device, so that the light emitting effect of the C-section UV lamp tube is improved.

Secondly, under the power effect of fan, inside outside air got into the casing from the air intake, passed through the inner chamber of reflector, guided wave mouth, microwave outlet, wind-guiding mouth, lamp body in proper order, finally flowed from foretell air outlet, took away the heat on C section UV fluorescent tube and the waveguide ware, played good radiating effect.

Drawings

FIG. 1 is a schematic diagram of the microwave path of the present invention;

fig. 2 is a schematic diagram of the heat dissipation principle of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly. In addition, the descriptions related to "preferred", "less preferred", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "preferred" or "less preferred" may explicitly or implicitly include at least one such feature.

Referring to fig. 1 and 2, an embodiment of the present invention provides a microwave-excited high-energy C-band UV lamp, including a lamp housing 1, a C-band UV lamp tube 2, a microwave generator 3, and a waveguide 4, where the waveguide 4 includes a waveguide shell 41, a scattering device, and a refraction focusing device, the upper end of the waveguide shell 41 is provided with a microwave inlet 411 corresponding to the microwave generator 3, and the lower end is provided with a microwave outlet 412 corresponding to the C-band UV lamp tube 2; scattering means for scattering microwaves is provided in the waveguide case 41; refractive focusing means are arranged in the waveguide housing 41 between the scattering means and the microwave outlet 412 for focusing the microwaves on the section C UV lamp tube 2.

Furthermore, a reflector 5 surrounding the C-section UV lamp tube 2 is arranged in the lamp housing 1, the reflector 5 is used for reflecting high-energy UV generated by the UV lamp and can be used for ink curing or other occasions during printing operation, and the reflector 5 is provided with a wave guide port 51 corresponding to the microwave outlet 412.

Preferably, the scattering means comprises at least two scattering sheets 42 parallel to each other, and the refractive focusing means comprises two focusing lenses 43, wherein each focusing lens 43 is a convex lens. The microwave generated by the microwave generator 3 is scattered when passing through the scattering sheet 42, so that the energy of the microwave is uniformly distributed, and after passing through the focusing mirror 43, the microwave energy is focused on the section C UV lamp tube 2 under the refraction action of the focusing mirror 43, thereby improving the light emitting effect of the section C UV lamp tube 2.

In the invention, the ultraviolet generated by the C-section UV lamp tube 2 is C-section short-wave ultraviolet, and the C-section UV lamp tube 2 is matched with the microwave generator 3 and the waveguide 4, so that the light emitting effect is optimal.

Further, a heat dissipation system capable of dissipating heat of the C-section UV lamp tube 2 and the waveguide 4 is disposed in the lamp housing 1.

Preferably, the lamp housing 1 is provided with an air outlet 11 and an air inlet 12 communicated with the inner cavity of the reflector 5, the waveguide housing 41 is provided with an air guide port 413, the air inlet 12, the inner cavity of the reflector 5, the wave guide port 51, the microwave outlet 412, the air guide port 413, the inner cavity of the lamp housing 1, and the air outlet 11 form a heat dissipation channel, and the heat dissipation system includes a heat dissipation channel and a fan 6 disposed at the air outlet 11. In the scheme, under the power action of the fan 6, outside air enters the shell from the air inlet 12, sequentially passes through the inner cavity of the reflecting cover 5, the wave guide port 51, the microwave outlet 412, the air guide port 413 and the inner cavity of the lamp shell 1, finally flows out of the air outlet 11, and takes away heat on the C-section UV lamp tube 2 and the waveguide 4.

In the invention, the length of the C-section UV lamp tube 2 can be set to be 60-300 cm, so that the UV lamp tube is suitable for curing printing ink in large-scale printing equipment.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which can be directly or indirectly applied to other related technical fields without departing from the spirit of the present invention, are intended to be included in the scope of the present invention.

Claims

1. A microwave excitation high-energy C-section UV lamp comprises a lamp shell (1), a C-section UV lamp tube (2), a microwave generator (3) and a waveguide (4), and is characterized in that the waveguide (4) comprises:

a waveguide shell (41), one end of the waveguide shell (41) is provided with a microwave inlet (411) corresponding to the microwave generator (3), and the other end is provided with a microwave outlet (412) corresponding to the C-section UV lamp tube (2);

scattering means, provided in said waveguide housing (41), for scattering microwaves;

and the refraction focusing device is arranged in the waveguide shell (41) and positioned between the scattering device and the microwave outlet (412) and is used for focusing the microwaves on the C-section UV lamp tube (2).

2. The microwave-excited high-energy C-section UV lamp according to claim 1, wherein a reflector (5) surrounding the C-section UV lamp tube (2) is arranged in the lamp housing (1), and the reflector (5) is provided with a wave guide port (51) corresponding to the microwave outlet (412).

3. The microwave-excited high-energy C-band UV lamp according to claim 1, wherein the scattering means comprises at least two scattering sheets (42) parallel to each other.

4. The microwave-excited high-energy C-band UV lamp according to claim 1, wherein the refractive focusing means comprises a two-piece focusing mirror (43).

5. The microwave-excited high-energy C-band UV lamp according to claim 2, wherein a heat dissipation system capable of dissipating heat of the C-band UV lamp tube (2) and the waveguide (4) is arranged in the lamp housing (1).

6. The microwave-excited high-energy C-section UV lamp according to claim 5, wherein the lamp housing (1) is provided with an air outlet (11) and an air inlet (12) communicated with the inner cavity of the reflector (5), the waveguide housing (41) is provided with an air guide opening (413), the air inlet (12), the inner cavity of the reflector (5), the wave guide opening (51), the microwave outlet (412), the air guide opening (413), the inner cavity of the lamp housing (1), and the air outlet (11) form a heat dissipation channel, and the heat dissipation system comprises the heat dissipation channel and a fan (6) arranged at the air outlet (11).

7. Microwave-excited high-energy C-section UV lamp according to claim 1, characterized in that the length of the C-section UV lamp tube (2) is 60-300 cm.

8. A waveguide, comprising:

the waveguide device comprises a waveguide shell (41), wherein one end of the waveguide shell (41) is provided with a microwave inlet (411), and the other end of the waveguide shell is provided with a microwave outlet (412);

a scattering device arranged in the waveguide shell (41) and used for scattering the microwave injected from the microwave inlet (411);

and the refraction focusing device is arranged in the waveguide shell (41) and positioned between the scattering device and the microwave outlet (412) and is used for focusing the microwaves and emitting the microwaves from the microwave outlet (412).

9. The waveguide according to claim 8, wherein said scattering means comprises at least two mutually parallel scattering plates (42).

10. The waveguide of claim 8, wherein said refractive focusing means comprises two focusing mirrors (43).