CN101901735A - Electrode assembly - Google Patents
Electrode assembly Download PDFInfo
- Publication number
- CN101901735A CN101901735A CN 201010236569 CN201010236569A CN101901735A CN 101901735 A CN101901735 A CN 101901735A CN 201010236569 CN201010236569 CN 201010236569 CN 201010236569 A CN201010236569 A CN 201010236569A CN 101901735 A CN101901735 A CN 101901735A
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- China
- Prior art keywords
- cermet rod
- electrode assemblie
- tungsten plug
- cermet
- structure according
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0735—Main electrodes for high-pressure discharge lamps characterised by the material of the electrode
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- Vessels And Coating Films For Discharge Lamps (AREA)
- Discharge Lamp (AREA)
Abstract
The invention discloses an electrode assembly structure. The structure comprises a tungsten mandril, a metal ceramic rod and a lead structure which are connected in turn, wherein one end of the tungsten mandril is a discharge end, the other end of the tungsten mandril is connected with one end of the metal ceramic rod, and the other end of the metal ceramic rod is connected with the lead or the metal ceramic rod directly used as the structure of a leading-out wire; and the outer diameter of the tungsten mandril is equivalent to that of the metal ceramic rod. The electrode assembly structure can effectively prevent the excessive conduction of heat to a tail end of the electrode assembly and ensure the excellent performance of a finished lamp in all aspects.
Description
Technical field
The present invention relates to a kind of electrode assemblie.
Background technology
Present global arc tube for ceramic metal halide lamp manufacturer mainly adopts the version of following two kinds of electrodes: first kind of structure, as shown in Figure 1, it is the tungsten plug 1 that respectively encapsulation is had tungsten spring 4, the close molybdenum rod 2 that is wound with molybdenum spiral 5 adopts the laser welding method collimation to weld together with the niobium bar 3 that is used for as outer lead, or the niobium bar is connected with the method for the close molybdenum rod that is wound with the molybdenum spiral by electron beam welding, wait the syllogic electrode structure of gauge structure for tungsten-molybdenum-niobium is non-, electric light source enterprise all adopts this structure mostly in the world; Another structure is to have minority enterprise to adopt cermet rod to replace molybdenum rod as connecting rod or increase the non-equant electrode structure of each section of an end cermet rod between molybdenum rod and niobium bar both at home and abroad.More than the electrode of two kinds of versions still on the sealing-in mode, all have inevitable defective in structure itself, the performance of the whole lamp of influence.
Prior art is because the existence of molybdenum spiral, makes around the molybdenum spiral cold junction and the gap unavoidably can penetrate into metal halide steam and condenses in the gap repeating to light in the use, and this colour temperature and light efficiency that will cause into lamp changes gradually; Because adopt the tungsten niobium material as electrode assemblie, molybdenum connecting rod high thermal makes the heat of electric arc tube be conducted to capillary end, make it temperature and improve, shell the temperature of weak electric arc tube on the contrary, influence the serviceability of lamp.
Summary of the invention
At the shortcoming of prior art, the purpose of this invention is to provide a kind of excessive conduction that stops heat to the electrode assemblie end, guarantee into the electrode assemblie structure of the excellent properties of lamp each side.
For achieving the above object, technical scheme of the present invention is: a kind of electrode assemblie structure, it comprises tungsten plug, cermet rod and the pin configuration that connects successively, one end of this tungsten plug is a discharge end, the other end is connected with an end of cermet rod, and the other end of cermet rod connects pin configuration.This programme adopts the cermet rod of high thermal resistance, has stoped the excessive conduction of heat to the electrode assemblie end, has guaranteed to become the excellent properties of lamp each side.
This tungsten plug external diameter is suitable with the cermet rod outside dimension, and it makes the unlikely temperature of tungsten plug too high in order to increase the surface area of tungsten plug, adds cover heat radiation spiral and not be used in the tungsten electrode head.And the tungsten discharge electrode end of traditional structure is around last helical tungsten filament, so as to the end heat radiation, but unfavorable and easily cause tungsten evaporation infringement illumination effect to point discharge owing to be in high temperature.
Particularly, this cermet rod is by aluminium oxide, yittrium oxide, magnesium aluminate spinel, yttrium-aluminium-garnet and metal: at least a material mixing in tungsten, molybdenum, chromium, tantalum, niobium, vanadium, hafnium, zirconium, the titanium, obtain the refractory oxides particle of metallic cover, the mass fraction of metal is more than or equal to 40%, and is less than or equal to 55%.Certainly, can also further add a spot of magnesium oxide, zirconia or ceramic fibre, make the coefficient of expansion of cermet rod and translucent alumina cell-shell approaching, and play toughening effect, improve the product mechanical performance, the cermet conductivity of making requires to be higher than 1 * 10
6S/m, thermal conductivity is controlled at 25～45W/Mk.
This pin configuration adopts the good and resistivity of high-temperature oxidation resistance less than 70 μ Ω cm, and the coefficient of expansion is less than 9 * 10
-6The material of/K is made, and it can be made by chromium base, Ni-based, hafnium base, rhenium base or IrPt special alloy or NiAl intermetallic compound or ZrC, NbC, TaC, HfC, WC.
An end or cermet rod exit that this cermet rod is connected with pin configuration are formed with position limiting structure.
This position limiting structure is for being processed into round platform or cone-shaped or square halfpace or convexing to form or convex to form with one to three of mechanical means processing at cermet rod one to three spacer of terminal welding or with laser sintered one to three at the cermet rod end.
The discharge end of this tungsten plug is processed into rounded nose or flat shape head, has necking down structure, conical head or spiral groove structure on this tungsten plug.
Rounded nose or flat shape head can effectively improve thermionic emissivities, are processed into necking down structure, conical head or spiral groove structure to reduce the temperature of electrode assemblie rear end, prevent that temperature from transmitting backward.
This tungsten plug and cermet rod weld by laser welding or arc welding, again at the cermet rod other end with laser or arc welding welding lead structure, be used for joining with external circuit.
The invention of this electrode assemblie structure comprises the tungsten plug and the cermet rod that are connected successively, and an end of this tungsten plug is a discharge end, and the other end is connected with an end of cermet rod, and the other end of cermet rod is directly as pin configuration.
The pin internal diameter size of this tungsten plug and cermet rod external diameter and high-efficiency ceramic pipe is suitable.Because the pin end of high-efficiency ceramic pipe is provided with the welding groove bigger than pin internal diameter, add that electrode assemblie cermet rod end is provided with the location structure that cooperates with welding groove, welding groove is realized air-tight packaging by filling scolder, and pin configuration passes scolder as external electrode.
The invention solves and inevitably can penetrate into metal halide steam in traditional ceramics metal halogen lamp pole molybdenum spiral and the gap thereof and condense in the gap, cause that metal halide constantly reduces in the electric arc tube, influence into the problem of the gentle light efficiency of light color; Next has solved traditional electrode and has used the molybdenum niobium material as the electrode connector, because its high thermal is with more the passing to electrode tube and end of the heat of discharge cavity, the temperature of electrode tube is improved, and the temperature of discharge cavity weakens, cause influencing into the problem of the serviceability of lamp; Solved traditional electrode at last and adopted each module diameter vertical stratification inequality, two end electrodes position distance is difficult to accurately fixingly when electric arc tube encapsulates, and causes unfavorable and the consistency problem that becomes the lamp making.
The present invention transfers to the mouth of pipe with sealing-in position in the past by the electrode tube hole wall, and the diameter of the mouth of pipe is bigger, greatly facilitates to put scolder and finish sealing-in.And scolder melts and finishes sealing-in at welding groove substantially, and does not need to finish sealing-in by the quite long electrode tube hole wall that flow to.In addition, further from the high arc temperature district, the length of electrode tube can correspondingly reduce scolder, helps some to the shorter and smaller application of electrode tube yardstick requirement compared with the technology of welding in prior art.The cold junction position of this scheme can effectively be controlled forward, owing to more near the thermal source part, improved cold junction temperature, guarantees the operating pressure of light source.
The present invention has adopted the high-temperature oxidation resistant conductor material as the pin configuration that is connected with external circuit, pin configuration satisfies simultaneously and possesses high-temperature oxidation resistance, low-resistance conductivity and can with the performance of cermet rod and glass solder matched seal, make the one-tenth lamp of assembling by this structure electrode can add cover glass outer cover, thereby making into lamp uses conveniently, widen application, cost performance is better.
Description of drawings
Fig. 1 is the structural representation of prior art electrode assemblie structure.
Fig. 2 is the structural representation of electrode assemblie structure of the present invention.
Fig. 3 is the structural representation of the another kind of electrode assemblie structure of the present invention.
Fig. 4 a-4d is four kinds of structural representations of tungsten plug.
Fig. 5 a-5d is the schematic top plan view of position limiting structure.
Fig. 6 is the structural representation of electric arc tube of the present invention.
Fig. 7 is the structural representation of the another kind of electric arc tube of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in detail.
As shown in Figure 2, the invention discloses a kind of electrode assemblie structure, it comprises tungsten plug 11, cermet rod 12 and the pin configuration 13 that connects successively, one end of this tungsten plug 11 is a discharge end, the other end is connected with an end of cermet rod 12, and the other end of cermet rod 12 connects pin configuration 13.
Further, these tungsten plug 11 external diameters are suitable with cermet rod 12 outside dimensions.
This cermet rod 12 is by aluminium oxide, yittrium oxide, magnesium aluminate spinel, yttrium-aluminium-garnet and metal: at least a material mixing in tungsten, molybdenum, chromium, tantalum, niobium, vanadium, hafnium, zirconium, the titanium, obtain the refractory oxides particle of metallic cover, the mass fraction of metal is more than or equal to 40%, and be less than or equal to 55%, and add a spot of magnesium oxide, zirconia or ceramic fibre.
This pin configuration 13 is made by chromium base, Ni-based, hafnium base, rhenium base or IrPt special alloy or NiAl intermetallic compound or ZrC, NbC, TaC, HfC, WC.
The end that this cermet rod 12 is connected with pin configuration 13 is formed with position limiting structure 14.
Shown in Fig. 4 a-4d, the discharge end of this tungsten plug 11 is processed into rounded nose or flat shape head, has necking down structure, conical head or spiral groove structure on this tungsten plug 11.
Shown in Fig. 5 a-5d, this position limiting structure 14 is for being processed into round platform or cone-shaped or square halfpace or forming at cermet rod 12 one to three spacers of terminal welding or with laser sintered one to three projection at cermet rod 12 ends.
This tungsten plug 11 and cermet rod 12 weld by laser welding or arc welding, again at cermet rod 12 other ends with laser or arc welding welding lead structure, be used for joining with external circuit.
As shown in Figure 3, electrode assemblie can also be that cermet rod 12 directly extends out, i.e. two segment body electrode structures, it is simpler that electrode is made, and is easy to make, and reduced manufacturing cost.
Shown in Fig. 6,7, no matter be to adopt syllogic or two-period form electrode structure, the internal diameter of the external diameter of cermet rod 12 and electrode tube 16 is suitable, and spacing location structure 14 is all arranged, and welding groove 18 carries out air-tight packaging by filling scolder 19.Leaded 13 among Fig. 6, cermet rod 12 is directly passed the connection of scolder 19 as external circuit among Fig. 7.
The following stated example just is described further for the present invention, does not constitute the restriction to the claim scope.Any be based upon on the technology of the present invention essence basis and making an amendment slightly changes the designed electrode product that comes out, all within claim scope of the present invention.
Embodiment 1 150W ceramic gold-halogen lamp syllogic electrode, as Fig. 2, specifically being of a size of of present embodiment described electrode each several part assembly: tungsten diameter of mandrel Φ A1:1.2mm, length A 1:6.0mm, tungsten plug discharge end are semicircle; Cermet rod diameter of phi A2:1.2mm, length A 2:13mm; Outer lead diameter of phi A3:0.8mm, length A 3:11.5mm is at two spacers of the terminal welding of cermet.Each several part adopts laser welding.
Claims (10)
1. an electrode assemblie structure is characterized in that, comprises the tungsten plug, cermet rod and the pin configuration that connect successively, and an end of this tungsten plug is a discharge end, and the other end is connected with an end of cermet rod, and the other end of cermet rod connects pin configuration.
2. electrode assemblie structure according to claim 1 is characterized in that, this tungsten plug external diameter is suitable with the cermet rod outside dimension.
3. electrode assemblie structure according to claim 2, it is characterized in that, this cermet rod is by aluminium oxide, yittrium oxide, magnesium aluminate spinel, yttrium-aluminium-garnet and metal: at least a material mixing in tungsten, molybdenum, chromium, tantalum, niobium, vanadium, hafnium, zirconium, the titanium, obtain the refractory oxides particle of metallic cover, the mass fraction of metal is more than or equal to 40%, and is less than or equal to 55%.
4. electrode assemblie structure according to claim 3 is characterized in that this cermet rod is also added a spot of magnesium oxide, zirconia or ceramic fibre.
5. electrode assemblie structure according to claim 2 is characterized in that, this pin configuration is made by the chromium base of the anti-halogenation of height, Ni-based, hafnium base, rhenium base or IrPt special alloy or NiAl intermetallic compound or ZrC, NbC, TaC, HfC, WC.
6. electrode assemblie structure according to claim 2 is characterized in that, an end or cermet rod exit that this cermet rod is connected with pin configuration are provided with position limiting structure.
7. electrode assemblie structure according to claim 6, it is characterized in that this position limiting structure is for being processed into round platform or cone-shaped or square halfpace or forming or form with one to three projection of mechanical means processing at cermet rod one to three spacer of terminal welding or with laser sintered one to three projection at the cermet rod end.
8. electrode assemblie structure according to claim 1 is characterized in that, the discharge end of this tungsten plug is processed into rounded nose or flat shape head, has necking down structure, conical head or spiral groove structure on this tungsten plug.
9. electrode assemblie structure according to claim 1 is characterized in that, this tungsten plug and cermet rod one end weld by laser welding or arc welding, and the cermet rod other end is used for joining with external circuit with laser or arc welding welding lead structure.
10. an electrode assemblie structure is characterized in that, comprises the tungsten plug, the cermet rod structure that connect successively, and an end of this tungsten plug is a discharge end, and the other end is connected with an end of cermet rod, and the other end of cermet rod is directly as pin configuration.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010236569 CN101901735A (en) | 2010-07-26 | 2010-07-26 | Electrode assembly |
| PCT/CN2010/076235 WO2012012953A1 (en) | 2010-07-26 | 2010-08-23 | Electrode assembly structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010236569 CN101901735A (en) | 2010-07-26 | 2010-07-26 | Electrode assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101901735A true CN101901735A (en) | 2010-12-01 |
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ID=43227177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010236569 Pending CN101901735A (en) | 2010-07-26 | 2010-07-26 | Electrode assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101901735A (en) |
| WO (1) | WO2012012953A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290321A (en) * | 2011-08-02 | 2011-12-21 | 海宁新光阳光电有限公司 | Electrode assembly special for ceramic metal halide lamp |
| CN103295856A (en) * | 2012-02-23 | 2013-09-11 | 上海亚尔光源有限公司 | Method for forming ultra-high performance point light source electrode |
| CN104183458A (en) * | 2013-05-28 | 2014-12-03 | 海洋王照明科技股份有限公司 | Ceramic halogen lamp electrode and ceramic halogen lamp |
| CN104183461A (en) * | 2013-05-28 | 2014-12-03 | 海洋王照明科技股份有限公司 | Ceramic halogen lamp electrode and ceramic halogen lamp |
| CN110340554A (en) * | 2018-03-19 | 2019-10-18 | 上海亚尔光源有限公司 | A kind of welding method of four sections ceramic metal halogen lamp pole |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7120521B2 (en) * | 2018-12-25 | 2022-08-17 | 住友電工デバイス・イノベーション株式会社 | Electronic component manufacturing method and semiconductor device manufacturing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1204858A (en) * | 1997-06-27 | 1999-01-13 | 电灯专利信托有限公司 | High-tension discharge lamp with ceramic discharge cavity |
| CN1471723A (en) * | 2001-05-08 | 2004-01-28 | �ʼҷ����ֵ�������˾ | Ceramic metal halide lamp |
| CN2888641Y (en) * | 2005-11-10 | 2007-04-11 | 复旦大学 | Electric arc tube for porcelain metal halide lamp |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433239C (en) * | 2001-08-09 | 2008-11-12 | 松下电器产业株式会社 | Electrode and metallic vapour discharge lamp |
| AU2002367333A1 (en) * | 2002-01-08 | 2003-07-24 | Koninklijke Philips Electronics N.V. | High-pressure discharge lamp and method of manufacturing an electrode feedthrough for such a lamp |
| CN101882560B (en) * | 2010-06-07 | 2013-06-19 | 杨潮平 | Efficient ceramic lamp |
-
2010
- 2010-07-26 CN CN 201010236569 patent/CN101901735A/en active Pending
- 2010-08-23 WO PCT/CN2010/076235 patent/WO2012012953A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1204858A (en) * | 1997-06-27 | 1999-01-13 | 电灯专利信托有限公司 | High-tension discharge lamp with ceramic discharge cavity |
| CN1471723A (en) * | 2001-05-08 | 2004-01-28 | �ʼҷ����ֵ�������˾ | Ceramic metal halide lamp |
| CN2888641Y (en) * | 2005-11-10 | 2007-04-11 | 复旦大学 | Electric arc tube for porcelain metal halide lamp |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290321A (en) * | 2011-08-02 | 2011-12-21 | 海宁新光阳光电有限公司 | Electrode assembly special for ceramic metal halide lamp |
| CN103295856A (en) * | 2012-02-23 | 2013-09-11 | 上海亚尔光源有限公司 | Method for forming ultra-high performance point light source electrode |
| CN103295856B (en) * | 2012-02-23 | 2016-01-06 | 上海亚尔光源有限公司 | The forming method of ultra-high performance point light source electrode |
| CN104183458A (en) * | 2013-05-28 | 2014-12-03 | 海洋王照明科技股份有限公司 | Ceramic halogen lamp electrode and ceramic halogen lamp |
| CN104183461A (en) * | 2013-05-28 | 2014-12-03 | 海洋王照明科技股份有限公司 | Ceramic halogen lamp electrode and ceramic halogen lamp |
| CN110340554A (en) * | 2018-03-19 | 2019-10-18 | 上海亚尔光源有限公司 | A kind of welding method of four sections ceramic metal halogen lamp pole |
| CN110340554B (en) * | 2018-03-19 | 2021-09-03 | 上海亚尔光源有限公司 | Welding method for four ceramic metal halide lamp electrodes |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012012953A1 (en) | 2012-02-02 |
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Application publication date: 20101201 |