CN2265594Y - No-electrode induction sodium lamp - Google Patents
No-electrode induction sodium lamp Download PDFInfo
- Publication number
- CN2265594Y CN2265594Y CN 96244818 CN96244818U CN2265594Y CN 2265594 Y CN2265594 Y CN 2265594Y CN 96244818 CN96244818 CN 96244818 CN 96244818 U CN96244818 U CN 96244818U CN 2265594 Y CN2265594 Y CN 2265594Y
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- CN
- China
- Prior art keywords
- sodium
- bulb
- coil
- coupling apparatus
- induction
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a non-polarity sensing sodium lamp. The inner of a temperature isolation cover which is closed in a vacuum seal mode is provided with a discharge bulb which is closed in the vacuum seal mode. The inner of the discharge bulb is filled with sodium, sodium steam and rare gases which are to be ionized. A concave hollow body which is arranged at the center of the discharge bulb is provided with a power coupler. The periphery of a sensing coil of the power coupler is reversely wound with a secondary coil. The lower end of the power coupler is provided with a heat absorption liquid core heat pipe. The output end of the power coupler is connected with a high frequency electron source which is connected with the sensing coil by a coaxial cable. The utility model has the advantages of long service life, large light output and low cost, and the use temperature is not influenced by external heat exchange and ambient air convection.
Description
The utility model relates to a kind of electrodeless induction sodium vapor lamp, and this lamp is lighted by electromagnetic induction.
As everyone knows, merely radiation human vision of optimal light source the most responsive green-yellow light (wavelength 5550 dusts).But make gas discharge merely produce the extremely difficult realization of a kind of light wave, and the resonance wavelength of sodium steam and 5550 dusts are very approaching, (resonance wavelength of sodium steam is 5890 dusts and 5896 dusts in spectroscope), therefore, sodium vapor lamp vision light efficiency the best.
When discharge current density is a certain value and sodium steam pressure when being a certain mercury column, produce the most effective resonance radiation in the sodium steam.Sodium vapor lamp luminous under this kind condition is most effective.
Common sodium vapor lamp uses the directly-heated type oxide coated cathode, and this have the life-span of utmost point sodium vapor lamp influenced by the directly-heated type oxide coated cathode, and the life-span is short, thereby cost is higher, has major part to be converted into heat energy in the electric energy of being imported, and consumes in vain, cause light efficiency lower, and be subject to the influence of ambient temperature.
The purpose of this utility model provides a kind of electrodeless induction sodium vapor lamp, and has utmost point sodium vapor lamp to compare, and its life-span is longer, and light output is big, and cost is lower, and serviceability temperature is not subjected to the influence of heat exchange with outside and ambient air convection current.
The purpose of this utility model is achieved in that
A kind of electrodeless induction sodium vapor lamp, this lamp is lighted by electromagnetic induction, it is characterized in that it is configured to:
Device has a discharging bulb (2) with the sealing of vacuum seal form in a temperature isolation cover (1) that seals with the vacuum seal form, this discharging bulb (2) usefulness is not made with the glass that sodium steam reacts, in this discharging bulb (2), be filled with power supply from sodium, sodium steam and rare gas, there is a recessed cavity (3) that is communicated with the bottom at the center of discharging bulb (2), is placed with the power coupling apparatus in this cavity (3);
The structure of power coupling apparatus comprises a tubulose iron core (6) of being made by soft magnetic material, and its external diameter is set with the sleeve of being made by synthetic material (4), is wound with induction coil (5) on the external diameter of sleeve (4);
Heat absorption liquid core heat pipe (9) is housed in the lower end of power coupling apparatus, and this heat absorption liquid core heat pipe (9) is a closed tubular vessel, and liquid is equipped with in inside, and tubulose iron core (6) is inserted in its upper end;
Described temperature isolation cover (1), discharging bulb (2) all is connected in support (8), the lower end of described heat absorption liquid core heat pipe (9) is stretched out cavity (3) flange outer and cooling stand (8) with sleeve (4) and is connected, and the output of described power coupling apparatus connects the high-frequency electrical component (7) that links to each other with induction coil with coaxial cable (10).
The purpose of this utility model can also realize by following measure:
Be wound with a level coil in the other direction at the induction coil (5) of described power coupling apparatus peripheral and be used to reduce limiting voltage and disturb, this secondary coil one end links to each other other end emptying with induction coil (5).
It is cylindrical that the profile of described temperature isolation cover (1) is bulb, described discharging bulb (2), and it is cylindrical that described indent cavity (3) all is the bulb that reduces successively.
The utility model has following actively useful effect:
1, the life-span is long: discharging bulb usefulness is not made with the glass that sodium steam reacts, so the problem that does not exist fluorescent tube to burn out, and the theoretical life-span of lamp only is decided by power supply.For effectively discharge and assurance life-span, also be filled with certain rare gas in the discharging bulb.This rare gas had both helped to light instantaneous discharge and conduction, and participated in discharge in whole discharge process, had improved the colour temperature and the color rendering index of lamp.
2, this light fixture has very big light output, reaches the 110-150 lumens/watt.
3, cost is low: do not have the directly-heated type oxide coated cathode of common sodium vapor lamp in the electrodeless lamp, thereby reduce manufacturing cost greatly, simplify production technology, also fundamentally solved the weakness that has the utmost point sodium vapor lamp life-span influenced by the directly-heated type oxide coated cathode.
4, the serviceability temperature scope is big: discharging bulb is enclosed in the temperature isolation cover that seals with the vacuum form, internal temperature remains in certain interval, the saturated pressure that has guaranteed sodium steam is not subjected to the influence of heat exchange with outside and ambient air convection current corresponding to best radiation regimes.
The utility model has the following drawings:
Fig. 1 is a structural representation of the present utility model, is the parting view.
Fig. 2 has the discharging bulb of cavity and the structural representation of temperature isolation cover among Fig. 1, be the parting view.
Fig. 3 is the structural representation of power coupling apparatus and coupling assembling thereof among Fig. 1.
One, electrodeless induction discharge sodium vapor lamp of the present utility model constitutes (see figure 1) by three parts:
1. be with the discharging bulb 2 of cavity and the vacuum insulation cover 1 (seeing Fig. 2 for details) of covering.
2. power coupling apparatus (power doubler) (seeing Fig. 3 for details).
3. the high-frequency electrical component 7, and frequency is 2.6--2.65MHz.
The discharging bulb 2 of band cavity is not made with the glass that does not react with sodium steam, with the sealing of vacuum tightness form, be filled with in it power supply from sodium, sodium steam and rare gas.There is a recessed cavity 3 the discharging bulb bottom.The discharging bulb outside is covered with the temperature isolation cover with the vacuum sealing mode sealing.
The power coupling apparatus is made up of the coil 5 of a ribbon core 6, and iron core 6 is used to strengthen induced field.There is a heat absorption liquid core heat pipe 9 inside of power coupling apparatus, is used for heat is passed to support 8,10 flanges, and then distributes.Electric current produces induced field H during by coil and brings out electric field E.The electronics of triggering for generating is accelerated in electric field, accelerated electron and sodium atom collision, and fraction is ionized, and forms plasma, and to keep electric current, major part is excited on the high level.When electronics is emitted photon when high level turns back to low-lying level, produce visible light.
Two, the high-frequency electrical component is made up of following part:
This power supply key be following some:
(1) working method of circuit system and transformer principle are similar.The coil of power coupling apparatus (multiplier) can be regarded primary coil as, and secondary coil is made of the discharging current in the discharge cavity.Be with the difference of transformer: the initial breakdown of secondary coil (intracavity gas promptly discharges), be lighting of lamp, be to cause by the axial electric field Ez that the multiplier coil produces, and interior gas of driving discharging bulb and metallic vapour discharge, then be by changing the horizontal component electric field E that magnetic flux produces in the coil.E must greater than transition period each required electron density value helical discharge to keep electric field.
(2) sodium vapor lamp is the same with all halide lamps, alters a great deal from being energized into stable and transient process middle impedance.This circuit theory is applicable to other the multiple metal halide lamps with discharge channel.
(3) high frequency conversion high-frequency and high-voltage HF generator is a circuit core, and it is a half-bridge circuit.Two metal-oxide-semiconductors of this half-bridge circuit are opened in turn and are closed, and duty ratio is 50%, provide a square wave to fan-in network.Fan-in network closes resonant tank by lamp and coil and an additional coupling lotus root to be formed, and its resonance frequency is designed to be lower than slightly switching frequency, thereby makes output current become sine wave.
Because this lamp has the characteristic of standard-sized sheet and complete shut-down, therefore can obtain very high efficient.Circuit can increase switching loss when high frequency, this circuit adopts transition resonance zero voltage switching technology.A transition period two power devices all keep in the dead time of closed condition, the output capacitance of power device discharge is to reduce loss.
Three, interference protection measure:
Interference can be divided into two kinds: radiated interference (interference of electromagnetic field) and conducted interference (limiting voltage interference).
Radiated interference: the high-frequency electronic source apparatus of (1) this sodium vapor lamp system is placed in the rectangular metal box, with the shielding high-frequency electric field.(2) this discharge lamp (Fig. 1) is placed on induction coil in the discharging bulb cavity, promptly is designed to underexcitation, and one of its benefit is the plasmasphere that forms when having utilized gas discharge in the discharging bulb just, and electromagnetic field radiation has been played shielding action.Therefore, magnetic dispersion meets LISPR15 regulation in the international standard EMI inhibition fully.As the user magnetic dispersion is had specific (special) requirements, the measure that this lamp is taked is: apply the layer of transparent conducting film and adjust discharge cavity inner inductive coil position outside discharging bulb.
Conducted interference: for all electrodeless discharge lamps, more difficult to manage is the disposal of limiting voltage being disturbed (TVD handles benchmark).This lamp by one alternately the secondary coil on the primary coil (coil on the power coupling apparatus) reduce TVD.The reverse coiling of secondary coil and primary coil, one end and primary coil join, other end emptying.Under the high-pressure situations, induced voltage has been eliminated the part electric field of primary coil by this secondary coil, but does not influence the magnetic field of primary coil.
Electromagnetic interference filter in the block diagram comprises norm and common mode inhibition circuit, and effect is to prevent that the high frequency that produces in the high-frequency electrical component from entering electrical network.
Claims (3)
1, a kind of electrodeless induction sodium vapor lamp, this lamp is lighted by electromagnetic induction, it is characterized in that it is configured to:
Device has a discharging bulb (2) with the sealing of vacuum seal form in a temperature isolation cover (1) that seals with the vacuum seal form, this discharging bulb (2) usefulness is not made with the glass that sodium steam reacts, in this discharging bulb (2), be filled with power supply from sodium, sodium steam and rare gas, there is a recessed cavity (3) that is communicated with the bottom at the center of discharging bulb (2), is placed with the power coupling apparatus in this cavity (3);
The structure of power coupling apparatus comprises a tubulose iron core (6) of being made by soft magnetic material, and its external diameter is set with the sleeve of being made by synthetic material (4), is wound with induction coil (5) on the external diameter of sleeve (4);
Heat absorption liquid core heat pipe (9) is housed in the lower end of power coupling apparatus, and this heat absorption liquid core heat pipe (9) is a closed tubular vessel, and liquid is equipped with in inside, and tubulose iron core (6) is inserted in its upper end;
Described temperature isolation cover (1), discharging bulb (2) all is connected in support (8), the lower end of described heat absorption liquid core heat pipe (9) is stretched out cavity (3) flange outer and cooling stand (8) with sleeve (4) and is connected, and the output of described power coupling apparatus connects the high-frequency electrical component (7) that links to each other with induction coil with coaxial cable (10).
2, electrodeless induction sodium vapor lamp as claimed in claim 1, it is characterized in that: be wound with a level coil in the other direction at the induction coil (5) of described power coupling apparatus peripheral and be used to reduce limiting voltage and disturb, this secondary coil one end links to each other other end emptying with induction coil (5).
3, electrodeless induction sodium vapor lamp as claimed in claim 1, it is characterized in that: it is cylindrical that the profile of described temperature isolation cover (1) is bulb, described discharging bulb (2), it is cylindrical that described indent cavity (3) all is the bulb that reduces successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96244818 CN2265594Y (en) | 1996-11-28 | 1996-11-28 | No-electrode induction sodium lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96244818 CN2265594Y (en) | 1996-11-28 | 1996-11-28 | No-electrode induction sodium lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2265594Y true CN2265594Y (en) | 1997-10-22 |
Family
ID=33918093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96244818 Expired - Fee Related CN2265594Y (en) | 1996-11-28 | 1996-11-28 | No-electrode induction sodium lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2265594Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762153A (en) * | 2014-02-21 | 2014-04-30 | 江苏立德照明产业有限公司 | Electrodeless induction discharge type low pressure sodium lamp |
| CN104766781A (en) * | 2015-04-01 | 2015-07-08 | 苏州承乐电子科技有限公司 | Novel high-frequency electrodeless lamp |
-
1996
- 1996-11-28 CN CN 96244818 patent/CN2265594Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762153A (en) * | 2014-02-21 | 2014-04-30 | 江苏立德照明产业有限公司 | Electrodeless induction discharge type low pressure sodium lamp |
| CN104766781A (en) * | 2015-04-01 | 2015-07-08 | 苏州承乐电子科技有限公司 | Novel high-frequency electrodeless lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |