CN85109410A - Metal vapour discharge lamp and manufacture method thereof - Google Patents
Metal vapour discharge lamp and manufacture method thereof Download PDFInfo
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- CN85109410A CN85109410A CN85109410.4A CN85109410A CN85109410A CN 85109410 A CN85109410 A CN 85109410A CN 85109410 A CN85109410 A CN 85109410A CN 85109410 A CN85109410 A CN 85109410A
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- electrode support
- support tube
- tube
- metal vapour
- vapour lamp
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 84
- 239000002184 metal Substances 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 40
- 239000006096 absorbing agent Substances 0.000 claims abstract description 16
- 238000012856 packing Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 46
- 239000007789 gas Substances 0.000 claims description 15
- MJGFBOZCAJSGQW-UHFFFAOYSA-N mercury sodium Chemical compound [Na].[Hg] MJGFBOZCAJSGQW-UHFFFAOYSA-N 0.000 claims description 13
- 229910001023 sodium amalgam Inorganic materials 0.000 claims description 12
- 229910052724 xenon Inorganic materials 0.000 claims description 11
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 10
- 238000010891 electric arc Methods 0.000 claims description 9
- 239000011261 inert gas Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 28
- 238000005476 soldering Methods 0.000 description 26
- 238000003466 welding Methods 0.000 description 22
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910052758 niobium Inorganic materials 0.000 description 5
- 239000010955 niobium Substances 0.000 description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 238000007500 overflow downdraw method Methods 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 150000003736 xenon Chemical class 0.000 description 1
Images
Abstract
Metal vapour discharge lamp by one by transparent porcelain tube, be sealed in the end cap at transparent porcelain tube two ends and be encapsulated into the luminous tube that the electrode support tube of respective end cap is formed.Wherein electrode support tube is both as the blast pipe that vacuumizes usefulness, again as the storage container of metal in the luminous tube of packing into.The external end of this electrode support tube is carried out vacuum seal with the method for heat fused.Tightly in the contact electrode stay pipe,, and making it fusing, just can form this vacuum seal to the heating of electrode support tube termination with a heat shielding absorber plate.
Description
The present invention relates to a kind of method that the metal vapour lamp of a transparent ceramic luminous tube is arranged and make this metal vapour lamp.More particularly, this invention and the above-mentioned type, be connected to the luminous tube of airtight electrode support tube at its two ends, and it is relevant to make the method for this luminous tube.
In general, the metal vapour lamp of the such high luminous efficiency of image height pressure sodium lamp all has a transparent ceramic luminous tube.Luminous tube is by garden cylindricality porcelain tube parts, and makes the airtight porcelain cap that combines with the porcelain tube two ends or metal cap is formed.Porcelain tube inside is filled with the metal of mercury and sodium one class after vacuumizing.
Put it briefly, after the filling metal, the vacuum seal method of luminous tube can be divided into two classes: without the method for blast pipe and the method for employing blast pipe.
Above-mentioned first method, without blast pipe, porcelain tube inside vacuumizes, filling metal and to series of processes such as porcelain tube dress end caps all at an airtight assembly space, for example carry out in the bell jar, this requires to use the assembly system of a complexity.Therefore, this method implements very difficulty, and operating efficiency is also low.
Just because of this, adopt the above-mentioned second method of blast pipe more common.Fig. 1 typically shows the luminous tube of a band blast pipe.Luminous tube is made up of porcelain tube part 1 and aluminium oxide end cap 2 and 3, and end cap is enclosed in the two ends of porcelain tube 1 with frit.Electrode support tube 4 is made by the thermal resistance metal as niobium with 5, is separately fixed at the center of end cap 2 and 3. Electrode support tube 4 and 5 extend on the inner termination of going in the porcelain tube 1 at it and is supporting corresponding electrode, therefore again as the conductor that electrode is powered up.One of electrode support tube, just electrode support tube 4 is intended luminous tube inside being evacuated by it as blast pipe, and the metal as mercury and sodium is advanced in filling.Therefore, this electrode support tube 4 will be referred to as " exhaust electrode stay pipe " hereinafter.
This have one to be processed with following method as the luminous tube of blast pipe by an electrode support tube.The first step is inserted into electrode support tube 4 and 5 in the centre bore of aluminium oxide end cap 2 and 3, when aluminium oxide end cap 2 and 3 is fixed to porcelain tube part 1, with frit electrode support tube 4 and 5 is sealed on aluminium oxide end cap 2 and 3.Next step, the external end head (hereinafter referred to as " non-exhaust electrode stay pipe ") as the electrode support tube 5 of blast pipe is not cut off after cold welding, if necessary must be being welded with arc welding by being cut end, so just obtain the termination sealing-in 5 of shape as shown in Figure 1 '.Then, by the blast pipe that constitutes by exhaust electrode stay pipe 4, the inside of porcelain tube part 1 is evacuated and is packed into metal.After this,, the outside termination cold welding of electrode support tube 4 is also cut off with the identical method in soldering and sealing electrode support tube 5 outside terminations, formation termination sealing-in 4 '.
When producing the same metal vapour lamp luminous tube of image height pressure sodium lamp with the method that adds blast pipe when, the outside termination of electrode support tube is to seal with the way of cold welding to cut off.So, these the shape of end-blocking head end 6 be made the point point as the blade shown in Fig. 2 A, its thickness be reduced to shown in Fig. 2 B like that.Particularly each two transverse ends 6a, 6a of end-blocking head thickness as thin as a wafer, be damaged easily and cause the danger of gas leakage.Therefore, vacuumize and the soldering and sealing operation finishing, and luminous tube is packed into when going in the outer glass bulb, all get SC.
When soldering and sealing being carried out in the end of electrode support tube with cold welding, not only must be after the exhaust electrode stay pipe install on the aluminium oxide end cap, and must after non-exhaust electrode stay pipe also installs on the aluminium oxide end cap, just can carry out this procedure of soldering and sealing.Therefore, very big end caps to the workload of porcelain tube end.
For fear of the problems referred to above, the present inventor has proposed a kind of suggestion of the metal vapour lamp that has improved in the multi-purpose open model No182359/1983 of Japan.As shown in Figure 3, in this metal vapour lamp, the external end head of non-exhaust electrode stay pipe 5 is not to use cold welding, but makes tube material fusing and realize airtight soldering and sealing with method for distinguishing, and just the method with arc discharge forms vacuum seal termination 5 ".In this way, the work of fusing and the non-exhaust electrode stay pipe of soldering and sealing termination is carried out, and no longer includes substantial difficulty, and also no longer vacuumizes relevant with filling metal with the porcelain tube partial interior.Owing to after the soldering and sealing of the termination of electrode support tube 5, just can finish the connection work of electrode support tube 5 and respective end cap, be sealed on the end cap 3 of porcelain tube part in case manage 5, it has just been handled easily.In addition, owing to simplified the assembly work of electrode support tube 5, end cap 3 and porcelain tube part 1, thus improved operating efficiency greatly.
When in the present inventor proposes this metal vapour lamp that has improved and after, think always that it is very difficult that the soldering and sealing that the sealing method of being advised will be moved to exhaust electrode stay pipe 4 is got on.Therefore, the sealing method of being advised only is used for the soldering and sealing of non-exhaust electrode stay pipe 5 terminations.
Or rather, exhaust electrode stay pipe 4 must give soldering and sealing in last one production process after metal is packed into porcelain tube.That is to say that this electrode support tube 4 is different with non-exhaust electrode stay pipe 5, it is not give soldering and sealing installing to corresponding end cap before getting on.
In the end in one production process, when the soldering and sealing of exhaust electrode stay pipe being got up with the method for fusing soldering and sealing, the heat of the arc welding of consumable electrode stay pipe termination, to being used for the frit that end caps is gone to the porcelain tube termination there is disadvantageous effect, the filling metal in the electrode support tube also is harmful to., wherein be filled with under the situation of metal also as canister at the exhaust electrode stay pipe, this problem is just more for serious.In other words, in this case, the effect of the heat that the metal of filling is subjected in the soldering and sealing process being produced and evaporating and scattering, and sneak into electrode support tube fusing the termination in go.Thereby can cause the trouble of gas leakage one class in the picture luminous tube course of work.In addition, the metal of filling has been owing to absorbed the foreign gas that the electrode support tube material is evaporated, and reduced from
Purity, this operating characteristic to the finished product luminous tube also has bad influence.
Owing to these reasons, first cold welding is adopted in the soldering and sealing of exhaust electrode stay pipe always, and the method that the back cuts off is carried out.Therefore, with the head of end-blocking 4 of exhaust electrode stay pipe 4 ' the similar problem of damage still exist, and with end-blocking head 4 ' the same, reliability is still very low, during luminous tube after the loading and unloading soldering and sealing, requires SC.
The exhaust electrode stay pipe also can run into the another one problem during also as the container of metal.In other words, at the metal vapour lamp duration of work, a temperature gradient can occur, the temperature of the outermost end of exhaust electrode stay pipe is minimum.Vapour pressure in the luminous tube, and relevant therewith modulating voltage will change with the variation of this minimum temperature.The length that this means exhaust electrode stay pipe external part cap portion is influential to the temperature of the coldest external end of this electrode support tube, also is the key factor of decision modulating voltage.Therefore, must design and select the length of extension according to modulating voltage.
Yet this is but conflicting with requiring of putting forward from the angle of producing.That is to say, after installing to the exhaust electrode stay pipe on the end cap, when with cold welding it being carried out soldering and sealing again, be subjected to the influence of the electrode tube end distortion that produces because of cold welding in order to prevent binding site between end cap and electrode support tube, it is long that electrode support tube has to stretch out end cap.In addition, it is firm to get in order to ensure electrode support tube termination cold welding, and cold welding must be finished on quite long length.This means that electrode support tube must be equipped with very longly, cause the utilization ratio of this noble metal of picture niobium not high.So, when determining the length of exhaust electrode stay pipe extension, have to consider more than these factors.
Therefore, when coming the sealing-in electrode support tube, only determine that according to modulating voltage the length of electrode support tube external part cap portion is very difficult, and the reality of extension elongation is determined to run into various restrictions with cold welding.
Must point out that also when carrying out sealing-in with cold welding, the shape of electrode support tube and extension elongation can be very inconsistent, this makes that the temperature of electrode support tube cold junction is also inconsistent, the inconsistent variation that can cause the modulating voltage of metal vapour lamp product again of cold junction temperature.
With the termination of cold welding soldering and sealing exhaust electrode stay pipe 4, also can cause a problem relevant with minim gap 7.Gap 7 be formed on soldering and sealing section 4 ', shown in Fig. 2 B.In other words, at the lamp duration of work, the zone around the minim gap 7 forms a part the coldest in luminous tube, the metal such as the sodium amalgam that cause filling to be advanced, this minim gap 7 of certainly will crowding into.Be captured in the sodium amalgam in the minim gap,, tend to evaporation, but can not evaporate very fully along with the starting once more of lamp.As a result, operating characteristic will degenerate, particularly under the situation that the filling metal amount in lamp is few, or under situation about being referred to as to unsaturation type sodium vapor lamp.
So, the purpose of this invention is to provide a kind of metal vapour lamp that ceramic luminous tube is arranged, its luminous tube has little modulating voltage to loose in addition, and the starting characteristic of having improved is arranged, and higher electrode support tube soldering and sealing reliability and higher noble metal utilance are arranged.Also provide the method for making this metal vapour lamp simultaneously, whereby to overcome the existing the problems referred to above of prior art.
For reaching this purpose, one aspect of the present invention provides a kind of metal vapour lamp that luminous tube is arranged, and its luminous tube is made up of transparent porcelain tube part, end cap and electrode support tube.The end cap hermetic seal is to the two ends of transparent porcelain tube.The corresponding end cap of the then airtight inclosure of electrode support tube, and from transparent porcelain tube, stretch out a part outside.One of electrode support tube is the exhaust electrode stay pipe, and it is both as vacuumizing the blast pipe of usefulness, again as the set out container of the metal in the light pipe of filling.During pipe work, the external end of this electrode support tube constitutes the coldest part of metal vapour lamp.Improvements are that the outside termination that has an electrode support tube at least is to carry out vacuum-packed with the method for heat fused.
Adopt this structure, the length of the electrode support tube section of stretching out of cold part can be freely definite according to modulating voltage to constitute luminous tube, needn't substantially consider other factors again.Because these characteristics have reduced loosing in addition of modulating voltage, have advantageously improved the starting characteristic of lamp.In addition, different with the discharge lamp made from cold welding, owing to there is not the end portion of the thin-walled edge of a knife on the electrode support tube, improved the reliability of electrode support tube termination soldering and sealing.
On the other hand, the invention provides the method for making metal vapour lamp, its operation includes: prepares on first inner termination electrode to be housed, and the unsealed electrode support tube of external end head, first electrode support tube is also as blast pipe that vacuumizes usefulness and the container of storing filling metal; Prepare electrode to be housed and the vacuum-packed electrode support tube of external end head on second inner termination; First and second electrode support tube are inserted on the corresponding end cap; End cap is encapsulated on the respective end of transparent porcelain tube; The assembly of transparent porcelain tube, end cap and electrode support tube is put into a gas-tight container, then gas-tight container and transparent porcelain tube inside are evacuated, then charge into inert gas, filling metal in first electrode support tube that sealing end not arranged; Get rid of inert gas and discharge lamp is started gas and charge into gas-tight container and transparent porcelain tube, up to giving fixed air pressure; Tightly contact with a heat shielding absorber plate, in the atmosphere of discharge lamp starting gas, with the unsealed outside termination of first electrode support tube of method soldering and sealing of heat fused with the outer end that first electrode support tube stretches out.
In this way, in the soldering and sealing process, absorb heat effectively by means of the heat shielding absorber plate when the heat fused of the termination of exhaust electrode stay pipe, the termination of electrode support tube can obtain cooling immediately and solidify.The heat shielding absorber plate shields and has siphoned away added heat during the soldering and sealing effectively, can prevent to be seated in the unnecessary evaporation of metal in the electrode support tube, take this to avoid many troubles that may cause at the lamp duration of work, cause gas leakage such as the material melts that evaporates to the soldering and sealing zone of pipe, and the luminous tube operating characteristic degenerates.By the same token, the vacuum-packed reliability of pipe has improved, and the scope of loosing in addition of modulating voltage has obtained favourable compression.
When in conjunction with the accompanying drawings referring to the explanation of following most preferred embodiment, above-mentioned purpose, the feature and advantage with other of the present invention will become more clear.
Fig. 1 is the plane graph of the luminous tube that is equipped with in the conventional metals yapour discharge lamp;
Fig. 2 A and 2B are the amplification view and the cutaway views of electrode support tube vacuum seal part in the luminous tube shown in Figure 1;
Fig. 3 is that the present inventor advises, the plane graph of known metal vapour lamp luminous tube;
Fig. 4 be with the corresponding to metal vapour lamp of the embodiment of the invention in the sectional plan view of the luminous tube example adorned;
Fig. 5 is the cutaway view that the end cap of exhaust electrode stay pipe is housed;
Fig. 6 is the cutaway view that the end cap of non-exhaust electrode stay pipe is housed;
Fig. 7 is the sectional plan view of luminous tube assembly;
Fig. 8 is an example that is applicable to the system of sealing-in luminous tube assembly.
The description of most preferred embodiment:
Hereinafter the present invention will be described in conjunction with the accompanying drawings.
At first consult Fig. 4, it is the sectional plan view that is used for embodying metal vapour lamp luminous tube example of the present invention.The luminous tube that is marked by label 10 has a transparent porcelain tube part 11 of making of transparent alumina.End cap 12 and 13 is also made of aluminium oxide, and they make intermediate solder with frit, is sealed to the two ends of porcelain tube.Centre bore is all arranged on the end cap 12 and 13, and Kong Zhongke is respectively charged into the electrode support tube 14 and 15 that niobium is done. Electrode support tube 14 and 15 usefulness are frit-sealed to end cap.Electrode 16 and 17 is respectively by the inner termination support of electrode support tube 14 and 15.
One of electrode support tube is stay pipe 14 under this situation, uses as blast pipe.By it the inside of porcelain tube part 11 is evacuated, then filling metal is advanced in filling therein.Vacuumizing with filling metal is to be undertaken by the outside opening end of steam vent 18 with pipe 14.Vacuumize and adorn after the metal, seal with the method for fusing the outside termination of exhaust electrode stay pipe 14, forms a vacuum seal end 14a.In this case, exhaust stay pipe 14 is the tubular form of end sealing.Exhaust electrode stay pipe 14 stretches out end cap 12 outer segment distances, and this distance is greater than the length of the section of stretching out of another electrode support tube 15.Therefore, cold spots is to be formed on the external end head of electrode support tube 14.
Another electrode support tube 15 does not design and uses as blast pipe.Before vacuumizing by exhaust electrode stay pipe 14, non-exhaust electrode stay pipe 15 must be through the seal processing the same with the exhaust electrode stay pipe, promptly seal forming a vacuum seal end 15a, so it also is the tubular form of end sealing with the method for fusing.Label 19 marks a hole that is positioned on non-exhaust electrode stay pipe 15 tube walls, and this hole allows the air in the pipe 15 therefrom to overflow.So, just can prevent that the air in the electrode support tube 15 from suppressing.Label 20 marks a packaged filled gold and belongs to.In the case, it is a sodium amalgam.Filling metal was put into electrode support tube 14 before sealing.When lamp was not worked, sodium amalgam concentrated in the electrode support tube 14.The lamp duration of work, sodium amalgam is with corresponding to the evaporation of the some of electrode support tube 14 outside termination temperature and diffuse into luminous tube 10.
The method that these luminous tube 10 usefulness are known installs in the glass bulb (not shown in FIG.) that people know, and metal vapour lamp has just been made.
Can know from above-mentioned explanation, according to the present invention, at least not only done blast pipe, but also the outside termination of that electrode support tube of making the container of filling metal be the fusing sealing, thereby formed a vacuum seal termination.Therefore, the thin-walled edge of a knife of the fragility that always exists when sealing with cold welding has not just existed, thereby has guaranteed the high reliability of sealing termination.By the same token, loosing in addition of electrode support tube extension elongation also reduced greatly.Can also know from above-mentioned explanation,, improve metal vapour lamp significantly, the operating characteristic of particularly unsaturation type discharge lamp owing to eliminated the microwave gap.In the traditional luminous tube that seals with the cold welding method, this minim gap can be formed in the coldest sealed end of electrode support tube inevitably.
Hereinafter will make an explanation to the manufacture method of the metal vapour lamp of the invention that contains described embodiment.As first procedure, being used for the niobium electrode stay pipe 14 that blast pipe uses is to insert the centre by the hole 12a on the dish-shaped aluminium oxide end cap 12, makes intermediate solder with frit, thereby finishes an end cap assembly as shown in Figure 5.Electrode support tube 14 is carried out steam vent 18 in advance, and is connected to electrode 16 at this place.
Secondly, as shown in Figure 6, another is not made with niobium as the electrode support tube 15 that blast pipe is used yet; the one end is equipped with electrode 17; and its outside termination 15a carries out vacuum seal with fusion method, and fusing is to use arc welding, and for example the gas tungsten arc welding that carries out in argon gas (TIG) is realized.As previously mentioned, electrode support tube 15 has a hole 19, suppresses in pipe 15 to prevent air.But as long as the combination between electrode 17 and the electrode support tube 15 is vacuum sealed to the bleed degree of luminous tube of the air that does not allow to manage in 15, this hole 19 just can be saved.This electrode support tube 15 inserts the centre by the hole 13a on the dish-shaped aluminium oxide end cap 13, makes intermediate solder with frit, thereby finishes other end cap assembly 22.Then, melt frit is hermetically sealed to end cap assembly 21 and 22 on the two ends of porcelain tube 11, as shown in Figure 7, takes this to seal the two ends of porcelain tube 11.Simultaneously, electrode support tube 14 and 15 also is hermetically sealed on corresponding end cap 12 and 13 with the method for frit fusing, and makes electrode support tube 14 and 15 stretch out end cap 12 and 13 1 sections predetermined length.Or rather, the length of electrode support tube 15 sections of stretching out should be selected less than the length of electrode support tube 14 sections of stretching out, the determining of the latter to make behind the sealing by fusing stretch out segment length and required modulating voltage adapts.
Next step gas-tight container 31 inside are evacuated and fill with argon gas.Then, pre-determined a certain amount of sodium mercury mixture, i.e. sodium amalgam, the unsealed electrode support tube 14 of packing into.After high vacuum was pumped in gas-tight container 31 inside, inner and luminous tube component internal was filled into xenon to 15 to 350 torr air pressure at gas-tight container 31.This xenon is the starting gas of luminous tube.After pipe sealed, xenon will be stayed in the luminous tube.Charge into after the xenon, start arc generator 32, between exhaust electrode stay pipe 14 and opposed sparking electrode 33, produce with the arc discharge of xenon as discharge gas.As a result, the external end head of electrode support tube 14 just is melted and solidifies, so that forms vacuum seal termination 14a, and it is similar to the vacuum seal termination 15a of non-exhaust electrode stay pipe 15.Thereby finished luminous tube shown in Figure 4 10.The method that these luminous tube 10 usefulness are familiar with is packed in the known glass bulb (not shown in FIG.) of people, and metal vapour lamp has just been made.
During the external end head with arc discharge soldering and sealing exhaust electrode stay pipe 14, the metal that electrode support tube 14 external end heads have melted can not flow to the outside that is keeping the heat shielding absorber plate 34 that contacts with electrode support tube 14.Along with extinguishing of electrical discharge arc, solidify immediately the end that electrode support tube 14 has melted, thereby form vacuum seal termination 14a.Therefore, suitably select heat shielding absorber plate 34 the position on the fastening electrode support tube 14, just can obtain the length after consistent electrode support tube 14 sections of stretching out are sealed.
Another benefit that heat shielding absorber plate 34 provides is, it has absorbed the heat that arc discharge produces effectively, prevent heat to the frit between electrode support tube 14,15 and the connection end cap 12,13, and the frit generation deleterious effects between porcelain tube 11 ends of end cap 12,13 and vicinity.Heat shielding absorber plate 34 can also prevent that the sodium amalgam as filling metal is heated and evaporates, and avoids the melt of the undesirable sodium amalgam that steams to enter into the melt portions of electrode support tube 14.Because identical, successfully avoided sealing any obstacle of arc discharge, these obstacles result from the pollution that inwall caused of sodium amalgam attached to gas-tight container 31.
In the foregoing description of manufacture method of the present invention, the electrode support tube external end head directly melts with arc discharge and seals, without any machining.But this is not unique method.The termination of electrode support tube also can be sealed in two steps: flatten pipe end with machining that alleviates next step sealing by fusing difficulty and the fusing that seals pipe end.Obviously, sealing also of electrode support tube can for example be carried out with the method for laser with the method that is different from described arc discharge.Outside the sealing also of termination 15 of non-exhaust electrode stay pipe can be realized with the port welding gun under atmospheric pressure.
According to the foregoing description of manufacture method of the present invention, only provided the basic mode of institute's inventive method, promptly in gas-tight container, once only processed a luminous tube assembly.Yet this is not unique mode and can settle many luminous tube assemblies 30 in container 31, and corresponding sparking electrode 33 is placed on the opposite of the exhaust electrode stay pipe 14 of luminous tube assembly 30 Face to face.Or single sparking electrode can move to the opposite of tactic luminous tube assembly exhaust electrode stay pipe 14.Use this scheme, can or vacuumize continuously and sealing operation many luminous tube assemblies whiles.
Table 1 provides the experimental result of the in addition diffusing property of metal vapour lamp modulating voltage that the luminous tube made from preceding method is housed.Contrast with the in addition diffusing property of conventional metals yapour discharge lamp modulating voltage, in the conventional metals yapour discharge lamp, sealing with cold welding of exhaust electrode stay pipe finished.
Table 1
In the above-mentioned table 1, symbol n represents the discharge lamp quantity that is used to test.And the mean value of Vl indication lamp voltage.The property of loosing in addition of modulating voltage is represented with variance factor δ.
As shown in Table 1, compare, have the in addition diffusing property of much smaller modulating voltage according to the produced metal vapour lamp of invention with the conventional metals yapour discharge lamp.This gives the credit to these facts: owing to adopt fusing to seal, simplified the exhaust electrode stay pipe shape of end-blocking head, and owing to adopt the measure of heat shielding absorber plate to make to control and form vacuum-packed position on the exhaust electrode stay pipe termination, thereby consolidation stretch out the length of luminous tube part.
These useful effects come to have eliminated not only to be made blast pipe, but also makes the property of loosing in addition that electrode support tube that the container of metal uses stretches out segment length, and the end of this electrode support tube section of stretching out has constituted the cold-zone of metal vapour lamp.Therefore, these useful effects are stretched out segment length with another root electrode support tube that does not form cold-zone and are had no relation.That is to say, though, preferably another non-exhaust electrode stay pipe is sealed with the fusion method among the described embodiment from sealing reliably.Yet,, can therefore not lose advantage of the present invention even this pipe seals with other method without the heat fused method yet.
Claims (16)
1, one by transparent porcelain tube part, be sealed in the end cap at these transparent porcelain tube two ends and be encapsulated into respective end cap and the metal vapour lamp of the luminous tube that the local electrode support tube that stretches out this transparent porcelain tube is formed, wherein one of electrode support tube is the exhaust electrode stay pipe, it had both made blast pipe, be seated in the container of the metal in the luminous tube again, at the metal vapour lamp duration of work, the top of the outside termination of one of this electrode support tube constitutes the cold-zone of this metal vapour lamp, improvement is to have at least the outside termination of an electrode support tube to carry out vacuum seal by heat fused.
2,, it is characterized in that other electrode support tube do not make blast pipe usefulness, and seal in its outside end by heat fused according to the metal vapour lamp of claim 1.
3,, it is characterized in that the length of the length of one of electrode support tube external part cap portion greater than other electrode support tube external part cap portion according to the metal vapour lamp of claim 1.
4,, it is characterized in that the length of the length of one of electrode support tube external part cap portion greater than other electrode support tube external part cap portion according to the metal vapour lamp of claim 2.
5, according to the metal vapour lamp of claim 1, the metal in this luminous tube that it is characterized in that packing into is a sodium amalgam.
6, according to the metal vapour lamp of claim 2, the metal in this luminous tube that it is characterized in that packing into is a sodium amalgam.
7, make the method for metal vapour lamp, it is characterized in that comprising following operation:
Prepare on first inner termination electrode to be housed, and the electrode support tube that external end head does not seal, this first electrode support tube prepared on second inner termination electrode to be housed also as the blast pipe that vacuumizes usefulness with store the container of filling metal, and the external end head electrode support tube of vacuum seal;
Described first and second electrode support tube are inserted corresponding end cap;
Described end caps on the respective end of transparent porcelain tube;
The assembly of described transparent porcelain tube, end cap and electrode support tube is put into gas-tight container, then this gas-tight container and transparent porcelain tube inside are evacuated, then charge into inert gas, and a metal packed into have not first electrode support tube of sealing end;
The discharge inert gas charges into this gas-tight container to discharge lamp starting gas and transparent porcelain tube is decided air pressure to giving;
Tightly entangle the external end head part that described first electrode support tube stretches out with the heat shielding absorber plate, in the atmosphere of discharge lamp starting gas, the not end-blocking head of first electrode support tube is sealed by heat fused.
8, according to the method for the manufacturing metal vapour lamp of claim 7, it is characterized in that filling metal is a sodium amalgam.
9, according to the method for the manufacturing metal vapour lamp of claim 7, it is characterized in that the starting gas of this discharge lamp is xenon.
10, the method for manufacturing metal vapour lamp according to Claim 8 is characterized in that the starting gas of this discharge lamp is xenon.
11, according to the method for the manufacturing metal vapour lamp of claim 9, it is characterized in that xenon is charged to 15 to 350 torr air pressure.
12, according to the method for the manufacturing metal vapour lamp of claim 10, it is characterized in that xenon is charged to 15 to 350 torr air pressure.
13, according to the metal vapour lamp of claim 7, the external end head that it is characterized in that described first electrode support tube is to seal with the caused fusing of arc discharge that betides in the xenon.
14, metal vapour lamp according to Claim 8, the external end head that it is characterized in that described first electrode support tube are to seal with the caused fusing of arc discharge that betides in the xenon.
15,, it is characterized in that described heat shielding absorber plate is contained in the contiguous sealing part for the treatment of on first electrode support tube according to the method for the manufacturing metal vapour lamp of claim 7.
16, the method for manufacturing metal vapour lamp according to Claim 8 is characterized in that described heat shielding absorber plate is contained in the contiguous sealing part for the treatment of on first electrode support tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85109410 CN1010065B (en) | 1985-11-27 | 1985-11-27 | Metal vapor discharge lamp and method of producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85109410 CN1010065B (en) | 1985-11-27 | 1985-11-27 | Metal vapor discharge lamp and method of producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85109410A true CN85109410A (en) | 1987-06-24 |
| CN1010065B CN1010065B (en) | 1990-10-17 |
Family
ID=4796322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85109410 Expired CN1010065B (en) | 1985-11-27 | 1985-11-27 | Metal vapor discharge lamp and method of producing the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1010065B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500693A (en) * | 2013-08-26 | 2014-01-08 | 黑龙江龙态环保科技发展有限公司 | Manufacturing method of multi-U sodium lamp inner tube and compact-type plasma sodium lamp adopting same |
-
1985
- 1985-11-27 CN CN 85109410 patent/CN1010065B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500693A (en) * | 2013-08-26 | 2014-01-08 | 黑龙江龙态环保科技发展有限公司 | Manufacturing method of multi-U sodium lamp inner tube and compact-type plasma sodium lamp adopting same |
| CN103500693B (en) * | 2013-08-26 | 2015-09-30 | 黑龙江龙态环保科技发展有限公司 | In many U sodium vapor lamp pipe manufacture method and adopt the compact plasma sodium vapor lamp of this pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1010065B (en) | 1990-10-17 |
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