CN103915313B - Coaxial resonant cavity microwave light source - Google Patents
Coaxial resonant cavity microwave light source Download PDFInfo
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- CN103915313B CN103915313B CN201410166712.0A CN201410166712A CN103915313B CN 103915313 B CN103915313 B CN 103915313B CN 201410166712 A CN201410166712 A CN 201410166712A CN 103915313 B CN103915313 B CN 103915313B
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- radome
- magnetron
- resonant cavity
- coaxial resonant
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Abstract
A kind of coaxial resonant cavity microwave light source, including the magnetron (1) producing microwave, the magnetron antenna (5) being connected with magnetron (1), it is fixed on magnetron (1) above and be located at the peripheral Conical Waveguide (7) of magnetron antenna (5), it is fixed on Conical Waveguide (7) radome above, magnetron antenna (5), Conical Waveguide (7), radome constitute coaxial resonant cavity (8), equipped with electrodeless bulb (3) in coaxial resonant cavity (8).Electrodeless bulb (3) is quartzy bead, is filled with luminescent substance and starts gas in quartzy bead.Electrodeless bulb (3), Conical Waveguide (7), magnetron antenna (5), the centrage of radome be on same axis it is characterised in that：Coaxial resonant cavity is λ/4 coaxial resonant cavity；Radome top has loophole (14), and loophole (14) is centrally located on axis.Radome is mesh radome (4) or no mesh radome (16).
Description
First, technical field
The present invention relates to Non-polarized lamp electric light source domain, particularly a kind of microwave plasma light source technology.
2nd, background technology
3400W HIGH-POWERED MICROWAVES sulfur lamp (Non-polarized lamp) that 1994 are invented by American comes out, due to this new type light source
Light efficiency is high, energy-saving and environmental protection, approximate sunlight color, is once once causing a sensation illumination circle, and hereafter a period of time HIGH-POWERED MICROWAVES sulfur lamp fills
Full international market.20 beginnings of the century, China just has tens of enterprises to release one after another more than 1000W HIGH-POWERED MICROWAVES sulfur lamp, but arrives
Now, the production of HIGH-POWERED MICROWAVES sulfur lamp, using declining to a great extent.Trace it to its cause, mainly due to HIGH-POWERED MICROWAVES sulfur
The security reliability of lamp is poor, the reason such as price height, short life, hinders promoting the use of of this lamp.Practice have shown that, using little work(
The microwave light source of rate, both can overcome disadvantages mentioned above, and can keep the efficient, advantage of energy-saving and environmental protection.But at present, on the market
Low also can only accomplish 700W.
The core technology of microwave light source is exactly microwave cavity technology.The good microwave light source of one performance of design is it is necessary to set
Meter one high quality factor Q-value, the microwave cavity of high transmission rate.American in the beginning of this century, by HIGH-POWERED MICROWAVES sulfur lamp skill
Art high price is assigned to LG company, sets about researching and developing the microwave light source that semiconductor microactuator wave source drives dielectric resonant chamber simultaneously again, obtains
Success, is proposed the LEP product of 150W～500W.But this microwave light source also has weak point：1st, semiconductor microactuator wave source skill
Art, current price is higher, and therefore price of complete machine is also higher, and the LEP lamp price of a general 300W is 6000 yuan about；2nd, because adopting
Do microwave cavity with media ceramic, bring dielectric loss, the raising of impact light efficiency；3rd, mercurous in bulb and85Kr radioactivity, no
It is real environment-friendly products.
HIGH-POWERED MICROWAVES light source typically adopts cylindrical or rectangle microwave resonator cavity, but is developing low power microwave light source
When, this two classes microwave cavity is just less suitable.Also some coaxial resonant cavities that released one after another in recent years are applied to microwave light source
On, such as Chinese patent ZL200720078798.7 discloses a kind of compact electrodeless lamp, uses trumpet type coaxial resonant cavity, light
Effect is very high, but experiment finds that resonator cavity housing surface light transmission part only accounts for 1/5, and Luminaire efficiency is not high.Chinese patent
ZL201120072612.3 discloses a kind of double cone microwave cavity.Cavity light transmitting surface amasss and accounts for 1/2, and Luminaire efficiency is
Improve, but be not met by requiring.
LED light source is currently referred to as forth generation lighting source or green light source, is widely promoted by people and uses.Due to
It has, and light efficiency height, energy-conserving and environment-protective, running voltage be low, the outstanding advantages such as life-span length, small volume.But LED is special in quality light source
Levy aspect and be not so good as microwave light source (sulfur lamp), these weak points are mainly manifested in：
Light efficiency is high not as good as microwave sulfur lamp.
LED be atomic spectrum be less than microwave sulfur lamp molecular spectrum good.LED light source passes through using blue-ray LED or ultraviolet
The fluorescence spectrum of LED+ laser fluorescence powder, or blue, red, the green multiple spectrum of polycrystal combines, light source color rendering index is left 75
The right side, the spectrum of LED is discontinuous.And microwave sulfur lamp color rendering index is typically 85 about, spectrum is continuous, closely too
Solar spectrum.
LED product is more sensitive to temperature, and the heat dissipation problem of high-power LED product is currently a difficult problem.
The light decay of LED product is big, and after 10000 hours, light decay is more than 20%, microwave sulfur lamp after 10000 hours light decay be less than
2%.
Summary it is considered that illumination below small-power 200w adopts LED light source more suitable because current one
At 6000 yuan about, this is difficult to be easily accepted by a user the LED price of high-power LED product such as 300w.
So typically adopting LEP light source or low-powered microwave sulfur lamp (LSL) preferably in more than 200w.But LEP at this stage
Product is still too expensive in price, and therefore developing cheap low-powered microwave sulfur lamp (LSL) energy saving environmental protection product more has realistic meaning.
3rd, content of the invention
The purpose of the present invention be design a kind of have high quality factor Q-value, high transmission rate small-power coaxial resonant cavity micro-
Wave source.
The basic ideas of the present invention are：Beneficial to λ/4 coaxial resonant cavity be not totally enclosed (i.e. one end is opening) this
Principle, using compact structure, realizes the small-power coaxial resonant cavity microwave light source with high quality factor Q-value, high transmission rate.
The present invention is realized in：A kind of coaxial resonant cavity microwave light source, including the magnetron producing microwave, with magnetic control
The magnetron antenna that pipe is connected, is fixed on magnetron and is located at the Conical Waveguide of magnetron antenna periphery, be fixed on circular cone ripple
Lead radome above.Magnetron antenna, Conical Waveguide, radome constitute coaxial resonant cavity, equipped with electrodeless in coaxial resonant cavity
Bulb, electrodeless bulb is quartzy bead, is filled with luminescent substance and starts gas, electrodeless bulb, Conical Waveguide, magnetic in quartzy bead
Keyholed back plate antenna, the centrage of radome be on same axis it is characterised in that：
Coaxial resonant cavity is λ/4 coaxial resonant cavity；
Radome top has loophole, and loophole is centrally located on axis.
Further scheme is：Magnetron antenna side wall has Muscovitum set.
Further scheme is：Radome is mesh radome；
Magnetron antenna top is fixed with layer of reflective material, and electrodeless bulb is fixed in layer of reflective material by adhesive linkage.
Further scheme is：Radome is no mesh radome；
Orifice ring is fixed with loophole inwall, orifice ring inwall is tapped with female thread；
Have and be fixed with regulation ring on a quartz curette rim of a cup outer wall, regulation ring outer wall is externally threaded, quartz curette built with
Layer of reflective material, electrodeless bulb is fixed in layer of reflective material by adhesive linkage；
The female thread of orifice ring is matched with the external screw thread of regulation ring.
Mica spacer also can be provided between magnetron antenna top and layer of reflective material
In the present invention：Layer of reflective material can be using SiO 2 powder of encapsulation etc..Can be filled with high-purity in electrodeless bulb
The luminescent substances such as sulfur, and it is filled with certain startup gas such as argon.Conical Waveguide can be made up of aluminium, and radome is by aluminium net warp
After polishing, braiding forms (mesh radome) or aluminium sheet rolls and forms (no mesh radome).Radome seat and Conical Waveguide can
Integral manufacturing is it is also possible to split production.Adhesive linkage is usually high-temperature plastic.
It is an advantage of the invention that：Using the coaxial resonant cavity microwave light source of the compact structure of present invention design, there is height
Quality factor q value, high transmission rate, can accomplish the small-power of 300W～400W.Particularly the present invention eliminates band in conventional art
Motor and control system that dynamic electrodeless bulb constantly rotates, make, maintenance cost all substantially reduces.The female thread of orifice ring and regulation
The external screw thread of ring matches, and can effectively move the position of electrodeless bulb in coaxial resonant cavity, thus implementing resonant-frequency adjustable, with
Just reach optimum efficiency.The loophole at shielding new cover top considerably increases transparent surface.
4th, brief description
Fig. 1 is first embodiment of the invention agent structure schematic diagram.
Fig. 2 is the partial enlarged drawing in C region in Fig. 1.
Fig. 3 is second embodiment of the invention agent structure schematic diagram.
In figure：1. magnetron, 2. radome seat, 3. electrodeless bulb, 4. mesh radome, 5. magnetron antenna, 6. Muscovitum
Set, 7. Conical Waveguide, 8. coaxial resonant cavity, 9. adhesive linkage, 10. quartz curette, 11. layer of reflective material, 12. regulation rings, 13. holes
Ring, 14. loopholes, 15. mica spacers, 16. no mesh radomes.
5th, specific embodiment
Below in conjunction with the accompanying drawings the present invention is described further.But the enforcement of the present invention is not limited to the following example.
First embodiment：As Fig. 1 and Fig. 2, a kind of coaxial resonant cavity microwave light source, including the magnetron 1 producing microwave, with
The magnetron antenna 5 that magnetron 1 is connected, is fixed on magnetron 1 and is located at the Conical Waveguide 7 of magnetron antenna 5 periphery, fixing
Radome above Conical Waveguide 7, magnetron antenna 5, Conical Waveguide 7, radome constitute coaxial resonant cavity 8, coaxial resonance
Equipped with electrodeless bulb 3 in chamber 8, electrodeless bulb 3 is quartzy bead, is filled with luminescent substance and starts gas in quartzy bead, electrodeless
Bulb 3, Conical Waveguide 7, magnetron antenna 5, the centrage of radome be on same axis it is characterised in that：
Coaxial resonant cavity is λ/4 coaxial resonant cavity；
Radome top has loophole 14, and loophole 14 is centrally located on axis.
Magnetron antenna 5 side wall has Muscovitum set 6.
Radome is mesh radome 4；
Magnetron antenna 5 top is fixed with layer of reflective material 11, and electrodeless bulb 3 is fixed on reflecting material by adhesive linkage 9
On layer 11.
It is additionally provided with mica spacer 15 between magnetron antenna 5 top and layer of reflective material 11.
Second embodiment：As Fig. 3, a kind of coaxial resonant cavity microwave light source, including the magnetron 1 producing microwave, with magnetic control
The magnetron antenna 5 that pipe 1 is connected, is fixed on magnetron 1 and is located at the Conical Waveguide 7 of magnetron antenna 5 periphery, be fixed on circle
Radome above cone waveguide 7, magnetron antenna 5, Conical Waveguide 7, radome constitute coaxial resonant cavity 8, in coaxial resonant cavity 8
Equipped with electrodeless bulb 3, electrodeless bulb 3 is quartzy bead, is filled with luminescent substance and starts gas in quartzy bead, electrodeless bulb 3,
Conical Waveguide 7, magnetron antenna 5, the centrage of radome be on same axis it is characterised in that：
Coaxial resonant cavity is λ/4 coaxial resonant cavity；
Radome top has loophole 14, and loophole 14 is centrally located on axis.
Magnetron antenna 5 side wall has Muscovitum set 6.
Radome is no mesh radome 16；
Orifice ring 13 is fixed with loophole 14 inwall, orifice ring 13 inwall is tapped with female thread；
Have and be fixed with regulation ring 12 on a quartz curette rim of a cup outer wall, regulation ring 12 outer wall is externally threaded, in quartz curette
Equipped with layer of reflective material 11, electrodeless bulb 3 is fixed in layer of reflective material 11 by adhesive linkage 9；
The female thread of orifice ring 13 is matched with the external screw thread of regulation ring 12.
Radome seat 2 and Conical Waveguide 7 can integral manufacturings.
By the typical coaxial Non-polarized lamp of above two method design, when input power is for 300w～400w, light can be obtained
Effect 120lm/w, colour temperature 5000k～6000k, color rendering index is higher than 80 microwave light source.
Claims (2)
1. a kind of coaxial resonant cavity microwave light source, including the magnetron (1) producing microwave, the magnetron being connected with magnetron (1)
Antenna (5), is fixed on magnetron (1) above and is located at the peripheral Conical Waveguide (7) of magnetron antenna (5), be fixed on Conical Waveguide
(7) radome above, magnetron antenna (5), Conical Waveguide (7), radome constitute coaxial resonant cavity (8), coaxial resonant cavity
(8) equipped with electrodeless bulb (3) in, electrodeless bulb (3) is quartzy bead, is filled with luminescent substance and starts gas in quartzy bead,
Electrodeless bulb (3), Conical Waveguide (7), magnetron antenna (5), the centrage of radome are on same axis, its feature
It is：
Coaxial resonant cavity (8) is λ/4 coaxial resonant cavity；
Radome top has loophole (14), and loophole (14) is centrally located on axis；
Magnetron antenna (5) side wall has Muscovitum set (6)；
Radome is mesh radome (4), and magnetron antenna (5) top is fixed with layer of reflective material (11), and electrodeless bulb (3) leads to
Cross adhesive linkage (9) to be fixed in layer of reflective material (11)；
Or radome is no mesh radome (16), and loophole (14) inwall is fixed with orifice ring (13), orifice ring (13) inwall
On be tapped with female thread, have on a quartz curette (10) rim of a cup outer wall and be fixed with regulation ring (12), regulation ring (12) outer wall is tapped with outer
Screw thread, quartz curette (10) is fixed on layer of reflective material built with layer of reflective material (11), electrodeless bulb (3) by adhesive linkage (9)
(11), on, the female thread of orifice ring (13) is matched with the external screw thread of regulation ring (12).
2. coaxial resonant cavity microwave light source according to claim 1 it is characterised in that：Magnetron antenna (5) top with anti-
Penetrate and between material layer (11), be additionally provided with mica spacer (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166712.0A CN103915313B (en) | 2014-04-24 | 2014-04-24 | Coaxial resonant cavity microwave light source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166712.0A CN103915313B (en) | 2014-04-24 | 2014-04-24 | Coaxial resonant cavity microwave light source |
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| CN103915313A CN103915313A (en) | 2014-07-09 |
| CN103915313B true CN103915313B (en) | 2017-03-08 |
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| CN201410166712.0A Expired - Fee Related CN103915313B (en) | 2014-04-24 | 2014-04-24 | Coaxial resonant cavity microwave light source |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241082B (en) * | 2014-09-18 | 2016-08-24 | 单家芳 | Microwave cylindrical coaxial cavity resonator plasma lamp |
| CN106548921A (en) * | 2015-09-17 | 2017-03-29 | 李碧霞 | A kind of microwave sulfur lamp discharged based on 1/4 λ double cones coaxial resonant cavity |
| CN112885705A (en) * | 2021-03-29 | 2021-06-01 | 李碧霞 | Microwave coaxial cavity metal halide lamp |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4902935A (en) * | 1988-06-29 | 1990-02-20 | Fusion Systems Corporation | Method and apparatus for evening out the temperature distribution of electrodeless lamp bulbs |
| US5525865A (en) * | 1994-02-25 | 1996-06-11 | Fusion Lighting, Inc. | Compact microwave source for exciting electrodeless lamps |
| CN202018949U (en) * | 2011-03-17 | 2011-10-26 | 雷彩云 | Coaxial biconical electrodeless lamp |
-
2014
- 2014-04-24 CN CN201410166712.0A patent/CN103915313B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4902935A (en) * | 1988-06-29 | 1990-02-20 | Fusion Systems Corporation | Method and apparatus for evening out the temperature distribution of electrodeless lamp bulbs |
| US5525865A (en) * | 1994-02-25 | 1996-06-11 | Fusion Lighting, Inc. | Compact microwave source for exciting electrodeless lamps |
| CN202018949U (en) * | 2011-03-17 | 2011-10-26 | 雷彩云 | Coaxial biconical electrodeless lamp |
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| CN103915313A (en) | 2014-07-09 |
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