CN101459030A - Ceramic method halide lamp, electrode and electric arc tube thereof, and manufacturing method for the electric arc tube - Google Patents
Ceramic method halide lamp, electrode and electric arc tube thereof, and manufacturing method for the electric arc tube Download PDFInfo
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- CN101459030A CN101459030A CNA2008101636131A CN200810163613A CN101459030A CN 101459030 A CN101459030 A CN 101459030A CN A2008101636131 A CNA2008101636131 A CN A2008101636131A CN 200810163613 A CN200810163613 A CN 200810163613A CN 101459030 A CN101459030 A CN 101459030A
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Abstract
The invention discloses a ceramic metal halide lamp and an electrode and an electric arc tube thereof and a method for manufacturing the electric arc tube, wherein a special electrode component comprises a metal ceramic rod, one end of the metal ceramic rod is connected with a tungsten electrode rod, the other end is connected with a niobium rod utilized to feed, besides, the metal ceramic rod, the tungsten electrode rod and the niobium rod are in an identical axial line, and the end portion of the tungsten electrode rod is a tungsten ring. At least one special electrode component is used for the electric arc tube, and the electric arc tube is utilized to manufacture the ceramic metal halide lamp, when in seal production, a glass solder ring is sleeved on the niobium rod, and then molten glass solder permeates to the metal ceramic rod through a clearance between the glass solder ring and the niobium rod and is in vacuum sealing welding with a tail tube of a ceramic discharge chamber. The invention adds the metal ceramic rod in the electrode component, the seal portion of the metal ceramic rod and the tail end of the ceramic discharge chamber is not easy to erode and crack, thereby prolonging the service life of lamps, in addition, the seal method is simple and reliable, and the sealing performance is better.
Description
Technical field
The present invention relates to a kind of ceramic metal helide lamp and manufacture method thereof, the manufacture method of particularly a kind of ceramic metal helide lamp and electrode thereof and electric arc tube and electric arc tube.
Background technology
Eighties of last century the mid-90, first adopt tungsten--molybdenum--ceramic metal helide lamp of niobium electrode structure, realized commercial applications, its photoelectric properties have had significant lifting for quartz metal halide lamp.Since then, for the length that shortens tungsten-molybdenum-niobium electrode to be reduced to the size of lamp, simultaneously also in order to increase the reliability in vacuum seal district under the high temperature, and the operability of electrode manufacturing process, seeking a kind of novel electrode material becomes one of key that ceramic metal helide lamp produces.And electrode assemblie at present commonly used by the niobium bar--be wound with the molybdenum rod of molybdenum circle or niobium bar--the tungsten bar that is wound with the molybdenum circle adds the tungsten electrode head again, coaxial welding forms.Conventional method for sealing is that the niobium bar that will use welds mutually with molybdenum rod that is wound with the molybdenum circle or tungsten bar earlier, realizes vacuum seal with glass solder with between they and the ceramic discharge chamber tail pipe again.When sealing-in, glass solder at first should cover enough electrode district length and prevent the corrosion of halide to Metallic rod, simultaneously again can not topped too much molybdenum circle partly to prevent the explosion of this district's earthenware, this makes the length in vacuum seal district all must remain in each lamp in the very little scope of error, otherwise the burning-point reliability of ceramic metal helide lamp just descends greatly, causes the explosion phenomenon of ceramic tail pipe easily.Therefore, make the ceramic gold-halogen lamp that often is operated under the hot conditions that 8000～10000 hours long-life is arranged, it is very crucial that its sealing technology and method just seem.
Summary of the invention
Technical problem to be solved by this invention provides the manufacture method of a kind of ceramic metal helide lamp and electrode and electric arc tube and electric arc tube, in electrode assemblie, added cermet rod, this cermet rod and ceramic discharge chamber tail pipe are difficult for producing corrosion and explosion phenomenon in sealing-in place, have prolonged the useful life that becomes lamp; And the method for its sealing-in is simple and reliable, better tightness.
The present invention's technical scheme that adopts of dealing with problems is:
A kind of ceramic metal helide lamp special electrode component comprises cermet rod, and an end of described cermet rod is the tungsten electrode bar, and the other end is a feed niobium bar, and the three is on the same axis; The end of described tungsten electrode bar is the tungsten circle.
As further improvement, the internal diameter of the diameter of described niobium bar used ceramic discharge chamber tail pipe when making ceramic metal halide lamp arc tube and less than its external diameter.
As further improvement, the material of described cermet rod is made up of aluminium oxide and molybdenum.
A kind of ceramic metal halide lamp arc tube, comprise the ceramic discharge chamber, in the tail pipe of two ends, described ceramic discharge chamber an electrode assemblie is axisymmetricly arranged respectively, be filled with starting gas, mercury and two or more at least metal halides in the described ceramic discharge chamber, having an electrode assemblie in the described electrode assemblie at least is aforesaid ceramic metal helide lamp special electrode component; Described niobium bar is in the outside of described ceramic discharge chamber tail pipe.
The manufacture method of aforesaid ceramic metal halide lamp arc tube is inserted in the glass solder ring earlier during sealing-in on the niobium bar, leave annular gap between described glass solder ring and described niobium bar; The melten glass scolder makes it to penetrate into described cermet rod position by described annular gap, makes described cermet rod and described ceramic discharge chamber tail pipe seal welding.
As further improvement, the distance 〉=0.2mm of the annular gap that stays between described glass solder ring and described niobium bar.
A kind of ceramic metal helide lamp comprises aforesaid ceramic metal halide lamp arc tube, and this ceramic metal halide lamp arc tube is by the manufacturing of above-mentioned described ceramic metal halide lamp arc tube manufacture method.
Cermet rod in the special electrode component of the present invention both can directly be connected with the tungsten electrode bar, also can connect a molybdenum rod or tungsten bar again between cermet rod and tungsten electrode bar, also can be provided with the molybdenum circle on molybdenum rod that connects or tungsten bar.
The present invention is applicable to the manufacturing of the various power ceramic metal helide lamps of 10W～1000W; Wherein glass solder is by Al
2O
3, Dy
2O
3, SiO
2, Ho
2O
3Deng composition, the component proportioning between them is by the material character decision in used sealing-in district; The metal halide that is filled in the ceramic discharge chamber can be at least two kinds in the halide of Na, Tl, In, Dy, Ho, Tm, Gd.
The invention has the beneficial effects as follows: in electrode assemblie, added cermet rod, this material has the characteristic of anti-halide corrosion, can at high temperature do not corroded by metal halide, promptly be difficult for producing corrosion and explosion phenomenon, prolonged the useful life that becomes lamp in sealing-in place with ceramic discharge chamber tail pipe; Adopt glass solder to be located on the niobium bar, and leave the annular gap of 0.2mm, can make the glass solder of fusion penetrate into the cermet rod position and with ceramic discharge chamber tail pipe vacuum seal welding, simple to operate, good airproof performance.
Description of drawings
Fig. 1 is the structural representation of a kind of execution mode of special electrode component among the present invention.
Fig. 2 is the structural representation of a kind of execution mode of electric arc tube among the present invention.
The present invention will be further described below in conjunction with accompanying drawing:
Embodiment
Embodiment 1: as shown in Figure 1, structural representation for a kind of execution mode of special electrode component, comprise tungsten electrode bar 1, tungsten circle 2, cermet rod 3, niobium bar 4, the material of cermet rod 3 is made up of aluminium oxide and molybdenum, wherein the internal diameter of the slightly larger in diameter of niobium bar 4 used ceramic discharge chamber tail pipe when making ceramic metal halide lamp arc tube but be slightly less than the external diameter of tail pipe.Tungsten circle 2, tungsten electrode bar 1, cermet rod 3 and niobium bar 4 are formed the entire electrode structure after the coaxial welding respectively successively.
Embodiment 2: as shown in Figure 2, the structural representation for a kind of execution mode of electric arc tube comprises a pair of above-mentioned special electrode component, semi-transparent polycrystal aluminium oxide ceramic discharge chamber 5, and the tail pipe 6 at this ceramic discharge chamber 5 and two ends thereof is integrated.During sealing-in, earlier this is placed the tail pipe 6 at transparent ceramic discharge cavity 5 two ends axisymmetricly to special electrode component, interval certain clearance between niobium bar 4 and the tail pipe 6, again glass solder ring 8 is placed on the niobium bar 4, the internal diameter of glass solder ring 8 is greater than the external diameter 0.2mm of niobium bar 4, the annular gap that promptly between glass solder ring 8 and niobium bar 4, has had 0.2mm, so that the glass solder 7 of fusion is penetrated into the cermet rod position by this annular gap, glass solder 7 covers most cermet rod 3 and gets final product, and the part that niobium bar 4 exposes tail pipe 6 connects as feed.In ceramic discharge chamber 5, fill the halide of starting gas, mercury and Na, Tl, Dy, Gd.
Claims (8)
1. a ceramic metal helide lamp special electrode component is characterized in that, comprises cermet rod (3), and an end of described cermet rod (3) is tungsten electrode bar (1), and the other end is a feed niobium bar (4), and the three is on the same axis; The end of described tungsten electrode bar (1) is tungsten circle (2).
2. ceramic metal helide lamp special electrode component according to claim 1 is characterized in that, the internal diameter of the diameter of described niobium bar (4) used ceramic discharge chamber tail pipe (6) when making ceramic metal halide lamp arc tube and less than its external diameter.
3. ceramic metal helide lamp special electrode component according to claim 1 is characterized in that, the material of described cermet rod (3) is made up of aluminium oxide and molybdenum.
4. ceramic metal halide lamp arc tube, comprise ceramic discharge chamber (5), an electrode assemblie is axisymmetricly respectively arranged in described ceramic discharge chamber (5) the two ends tail pipes (6), be filled with starting gas, mercury and two or more at least metal halides in the described ceramic discharge chamber (5), it is characterized in that having an electrode assemblie in the described electrode assemblie at least is according to claim 1 or 2 or 3 described ceramic metal helide lamp special electrode component; Described niobium bar (4) is in the outside of described ceramic discharge chamber tail pipe (6).
5. the manufacture method of ceramic metal halide lamp arc tube according to claim 4 is characterized in that, is inserted in glass solder ring (8) earlier on niobium bar (4) during sealing-in, leaves annular gap between described glass solder ring (8) and described niobium bar (4); Melten glass scolder (7) makes it to penetrate into described cermet rod (3) position by described annular gap, makes described cermet rod (3) and described ceramic discharge chamber tail pipe (6) seal welding.
6. the manufacture method of ceramic metal halide lamp arc tube according to claim 5 is characterized in that, the distance 〉=0.2mm of the annular gap that stays between described glass solder ring (8) and described niobium bar (4).
7. a ceramic metal helide lamp is characterized in that, comprises ceramic metal halide lamp arc tube as claimed in claim 4.
8. ceramic metal helide lamp according to claim 7 is characterized in that, described ceramic metal halide lamp arc tube is by as claim 5 or 6 described ceramic metal halide lamp arc tube manufacture method manufacturings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101636131A CN101459030A (en) | 2008-12-17 | 2008-12-17 | Ceramic method halide lamp, electrode and electric arc tube thereof, and manufacturing method for the electric arc tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101636131A CN101459030A (en) | 2008-12-17 | 2008-12-17 | Ceramic method halide lamp, electrode and electric arc tube thereof, and manufacturing method for the electric arc tube |
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| Publication Number | Publication Date |
|---|---|
| CN101459030A true CN101459030A (en) | 2009-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101636131A Pending CN101459030A (en) | 2008-12-17 | 2008-12-17 | Ceramic method halide lamp, electrode and electric arc tube thereof, and manufacturing method for the electric arc tube |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347184A (en) * | 2010-08-03 | 2012-02-08 | 上海米开罗那机电技术有限公司 | Technology for sealing ceramic metal halogen lamp by lasers |
| CN109243940A (en) * | 2018-09-28 | 2019-01-18 | 贵州宇光鸿宇电气照明科技有限公司 | A kind of electrode sealing location structure for ceramic gold-halogen lamp |
| CN112620848A (en) * | 2020-12-25 | 2021-04-09 | 西安成立航空制造有限公司 | Vacuum brazing method for slender weld joint of hole shaft matched part |
-
2008
- 2008-12-17 CN CNA2008101636131A patent/CN101459030A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347184A (en) * | 2010-08-03 | 2012-02-08 | 上海米开罗那机电技术有限公司 | Technology for sealing ceramic metal halogen lamp by lasers |
| CN109243940A (en) * | 2018-09-28 | 2019-01-18 | 贵州宇光鸿宇电气照明科技有限公司 | A kind of electrode sealing location structure for ceramic gold-halogen lamp |
| CN112620848A (en) * | 2020-12-25 | 2021-04-09 | 西安成立航空制造有限公司 | Vacuum brazing method for slender weld joint of hole shaft matched part |
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Open date: 20090617 |