EP0952608A1 - High pressure discharge lamp - Google Patents
High pressure discharge lamp Download PDFInfo
- Publication number
- EP0952608A1 EP0952608A1 EP99107029A EP99107029A EP0952608A1 EP 0952608 A1 EP0952608 A1 EP 0952608A1 EP 99107029 A EP99107029 A EP 99107029A EP 99107029 A EP99107029 A EP 99107029A EP 0952608 A1 EP0952608 A1 EP 0952608A1
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- EP
- European Patent Office
- Prior art keywords
- support roller
- discharge lamp
- pressure discharge
- piston
- lamp according
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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.)
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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
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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
- H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
- H01J61/366—Seals for leading-in conductors
Definitions
- the invention is based on a high-pressure discharge lamp according to the preamble of claim 1. It is primarily short-arc lamps, in particular mercury discharge lamps, especially of high power. These can also contain additives to metal halides. In principle, the invention can also be used with xenon short-arc lamps.
- a generic high-pressure discharge lamp is known from US-A 5 140 222. It has a xenon filling.
- the piston necks are provided with conical support elements made of quartz glass and ceramic disks, which are movably seated in the piston neck and are pressed against a constriction at the entrance of the piston neck by means of a spring.
- the object of the present invention is to provide a high-pressure discharge lamp according to the preamble of claim 1 which can withstand a high filling pressure without bursting.
- a value of the operating pressure of 30 to 70 bar is typical.
- the high-pressure discharge lamp according to the invention consists of a bulb made of quartz glass with two essentially cylindrical bulb necks, in which two electrodes, which are diametrically opposed, are held by means of electrode rods, each rod being encased in the front part of the bulb neck by a support roller which is connected to the Piston wall is fused in the area of the piston neck.
- the support roller is conically shaped on its outer side (lateral surface) and tapers towards the electrode, so that the outer diameter of the front end of the support roller is smaller than the outer diameter of the rear end of the support roller.
- the rod can either be led directly into the rear part of the piston neck or end behind the support roller, for example on a molybdenum disc.
- the rod is made up of an extension part continued to the outside.
- this fact is of no importance for the present invention.
- large-watt lamps with an output of more than 1000 watts can be filled with a high operating pressure (up to 70 bar).
- Typical is a mercury filling with 20 to 100 mg / cm 3 , maximum up to 150 mg / cm 3 .
- the large pistons have lengths of up to 120 mm and more and typical diameters of 100 mm. Because of the high operating pressure, the risk of the piston bursting must be countered. A careful analysis found the transition between the discharge volume and the bulb neck as a weak point. It has been shown that a conical support roller can help here. With suitable dimensions, the burst pressure can be increased by up to 300%.
- the ratio between the outer diameter of the rear end of the conical support roller and the outer diameter of the front end of the support roller is between 1.1 and 2.5.
- the wall thickness of the support roller at its front end should be as small as possible so that the transition from the wall thickness of the piston neck to that of the piston neck / support roller system is as continuous as possible. Good results can be achieved if the wall thickness at the front end of the support roller is less than or equal to, preferably less than 50%, the original wall thickness of the piston at this point. Then the reinforced wall thickness after melting or melting will be a maximum of 1.5 times the original wall thickness.
- indent An area at the front end of the piston neck (hereinafter referred to as indent) is advantageously free of the support roller. It is recommended that the feeder corresponds to a maximum of twice the outer diameter of the support roller at its front end. In absolute terms, the feed should preferably be between 3 and 25 mm.
- a further improvement and optimization of the burst pressure resistance is achieved in that the inner piston wall in the area of the intake connects to the conical outer surface at the front of the support roller in such a way that the angle ⁇ between the end face of the support roller and the inner wall of the piston in the intake area is a maximum of 90 °, preferably at most is equal to ⁇ and preferably less than or equal to ⁇ - 15 ° if ⁇ is the angle which corresponds to a tangential connection of the inner wall of the piston to the end face of the support roller.
- the inner wall of the piston in the area of the intake therefore typically projects inwards via the support roller.
- a conical support roller is not only to be understood here as a cone with a straight lateral surface, but also that the generatrix of the conical lateral surface represents a curved curve, so that the lateral surface is somewhat bulged, but is still conical overall.
- the conical support roller can also have a short cylindrical extension (maximum 30% of the total length) with a constant diameter at its rear end. However, this is meaningless for the function according to the invention.
- the most important application of the present invention relates to the fact that the flask is filled with mercury, the filling amount being up to 150 mg / cm 3 , typically 30 to 100 mg / cm 3 .
- Typical lamp outputs are at least 1 kW.
- the pressure increase achieved is achieved by a better geometric adaptation of the wall thicknesses at the transition between the pure piston wall and the wall reinforced by the support roller. This ultimately allows the piston neck to be conically narrowed at this point. Is preferred a maximum outer diameter of the support roller of up to 20 mm, in particular up to 15 mm, at the rear end. Overall, a smaller diameter, and thus also a smaller surface, is thus created in the front area of the piston neck. This increases the burst pressure.
- the connection between the piston neck and the support roller is created by the known melting of the piston neck onto the support roller, which is narrower at the front.
- the retraction on the piston neck results in a more favorable distribution of the force in the piston neck caused by the internal pressure of the filling.
- the bulb neck is a sensitive area of the lamp. It has been found that the pressure stability of the piston neck increases with the ratio of wall thickness: diameter. With the same wall thickness, increased stability is therefore achieved in that the diameter of the connection point is reduced by the conical support roller.
- Figure 1 shows a mercury high-pressure discharge lamp 1 with an output of 2.5 kW on average. It has a piston 2 made of quartz glass with a wall thickness of 4 mm. It is elliptical, barrel-shaped or similar. shaped and encloses a discharge volume 3. This is followed by diametrically opposed two piston necks 4 (only one is shown).
- front conical part 4a which contains a support roller 5 made of quartz glass, and a rear cylindrical part 4b, which forms the sealing seal.
- the front part 4a has an indentation 6 of 5 mm in length.
- the wall thickness of the piston in this area is approximately 4 mm.
- the axial length of the support roller is 22 mm.
- an electrode rod 10 with a diameter of 6 mm is axially guided, which extends into the discharge volume, and there carries an electrode head 11 as an anode.
- the rod 10 is extended beyond the support roller 5 to the rear and ends on a plate 12, which is followed by a cylindrical quartz block 13. This is followed by a second plate 14 which holds an external power supply in the form of a molybdenum rod 15 in the middle.
- Four foils 16 made of molybdenum are guided along the outer surface of the quartz block in a manner known per se and melted onto the wall of the piston neck.
- the conical support roller 5 leads to an increase in the bursting pressure by 200% compared to the above. State of the art. The bursting pressure increases by a further 100%.
- Figure 2 shows a support roller 20, the outer surface 21 is slightly convex.
- the ratio of the outer diameters at the front and rear ends is 1.9.
- Figure 3 shows a support roller 25 with a straight lateral surface 26 and a ratio of the outer diameter at the front and rear end of 1.4.
- a cylindrical extension 27 with a constant outer diameter can sit at the rear end. Its length is about 10% of the total length of the support roller 25.
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- Vessels And Coating Films For Discharge Lamps (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
Description
Die Erfindung geht aus von einer Hochdruckentladungslampe gemäß dem Oberbegriff des Anspruchs 1. Es handelt sich dabei vornehmlich um Kurzbogenlampen, insbesondere Quecksilber-Entladungslampen, vor allem hoher Leistung. Diese können auch Zusätze an Metallhalogeniden enthalten. Die Erfindung ist im Prinzip auch bei Xenonkurzbogenlampen verwendbar.The invention is based on a high-pressure discharge lamp according to the preamble of
Aus der Schrift US-A 5 140 222 ist eine gattungsgemäße Hochdruckentladungslampe bekannt. Sie besitzt eine Xenonfüllung. Die Kolbenhälse sind mit konischen Stützelementen aus Quarzglas und keramischen Scheiben versehen, wobei diese beweglich im Kolbenhals sitzen und mittels einer Feder an eine Verengung am Eingang des Kolbenhalses angepreßt werden.A generic high-pressure discharge lamp is known from US-A 5 140 222. It has a xenon filling. The piston necks are provided with conical support elements made of quartz glass and ceramic disks, which are movably seated in the piston neck and are pressed against a constriction at the entrance of the piston neck by means of a spring.
Bei Quecksilber-Hochdruckentladungslampen sind bisher Stützröllchen mit gerader äußerer Mantelfläche verwendet worden, wobei der Kolbenhals an diese äußere Mantelfläche angeschmolzen ist. Bisher bekannte Lampen verwendeten angeschmolzene Stützröllchen mit konstanter Wanddicke über die Länge, siehe EP-A 479 089, EP-A 479 088 sowie DE-A 196 18 967. Dadurch waren Außendurchmesser und Innendurchmesser konstruktiv vorgegeben durch den Durchmesser der Folieneinschmelzung im hinteren Teil des Kolbenhalses. Die Stützröllchen wurden außerdem meist direkt am Beginn des Kolbenhalses eingesetzt und dort mit der Kolbenwand im Bereich des Kolbenhalses verschmolzen. Diese Technologie gestattet aber nur Quecksilberfüllmengen bis maximal 20 mg/cm3 bei relativ kleinen Kolbenabmessungen bis zu einer Gesamtlänge von etwa 80 mm. Bei höherem Druck erhöht sich das Berst-Risiko, weil die Belastbarkeit im Bereich des Übergangs Entladungsvolumen/Kolbenhals überschritten wird.In the case of high-pressure mercury discharge lamps, support rollers with a straight outer lateral surface have hitherto been used, the bulb neck being fused to this outer lateral surface. Previously known lamps used fused support rolls with a constant wall thickness over the length, see EP-A 479 089, EP-A 479 088 and DE-A 196 18 967. As a result, the outer diameter and inner diameter were structurally determined by the diameter of the melted film in the rear part of the bulb neck . The support rolls were also mostly at the beginning of the Piston neck inserted and fused there with the piston wall in the area of the piston neck. However, this technology only allows mercury fill quantities up to a maximum of 20 mg / cm 3 with relatively small piston dimensions up to a total length of approximately 80 mm. At higher pressures, the risk of bursting increases because the load capacity in the area of the discharge volume / piston neck transition is exceeded.
Es ist Aufgabe der vorliegenden Erfindung, eine Hochdruckentladungslampe gemäß dem Oberbegriff des Anspruchs 1 bereitzustellen, die einem hohen Fülldruck standhalten kann ohne zu bersten. Typisch ist ein Wert des Betriebsdrucks von 30 bis 70 bar.The object of the present invention is to provide a high-pressure discharge lamp according to the preamble of
Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Besonders vorteilhafte Ausgestaltungen finden sich in den abhängigen Ansprüchen.This object is achieved by the characterizing features of
Im einzelnen besteht die erfindungsgemäße Hochdruckentladungslampe aus einem Kolben aus Quarzglas mit zwei im wesentlichen zylindrischen Kolbenhälsen, in denen zwei Elektroden, die sich diametral gegenüberstehen, mittels Elektrodenstäben gehaltert sind, wobei jeder Stab im vorderen Teil des Kolbenhalses von einem Stützröllchen ummantelt ist, das mit der Kolbenwand im Bereich des Kolbenhalses verschmolzen ist. Das Stützröllchen ist an seiner Außenseite (Mantelfläche) konisch geformt und läuft in Richtung zur Elektrode hin spitz zu, so daß der Außendurchmesser des vorderen Endes des Stützröllchens kleiner als der Außendurchmesser des hinteren Endes des Stützröllchens ist.In particular, the high-pressure discharge lamp according to the invention consists of a bulb made of quartz glass with two essentially cylindrical bulb necks, in which two electrodes, which are diametrically opposed, are held by means of electrode rods, each rod being encased in the front part of the bulb neck by a support roller which is connected to the Piston wall is fused in the area of the piston neck. The support roller is conically shaped on its outer side (lateral surface) and tapers towards the electrode, so that the outer diameter of the front end of the support roller is smaller than the outer diameter of the rear end of the support roller.
Der Stab kann entweder in den hinteren Teil des Kolbenhalses direkt weitergeführt sein oder hinter dem Stützröllchen enden, beispielsweise an einer Molybdän-Scheibe. Der Stab wird in diesem Fall durch ein Verlängerungsteil nach außen weitergeführt. Dieser Umstand ist jedoch für die vorliegende Erfindung ohne Bedeutung.The rod can either be led directly into the rear part of the piston neck or end behind the support roller, for example on a molybdenum disc. In this case, the rod is made up of an extension part continued to the outside. However, this fact is of no importance for the present invention.
Durch die neuartige Stütztechnik können großwattige Lampen mit einer Leistung von mehr als 1000 Watt mit einer Füllung unter hohem Betriebsdruck (bis 70 bar) versehen werden. Typisch ist eine Quecksilberfüllung mit 20 bis 100 mg/cm3, maximal bis 150 mg/cm3. Die großen Kolben haben Längen bis zu 120 mm und mehr und typische Durchmesser von 100 mm. Wegen des hohen Betriebsdrucks muß der Gefahr des Berstens des Kolbens begegnet werden. Eine sorgfältige Analyse hat als Schwachstelle den Übergang zwischen Entladungsvolumen und Kolbenhals gefunden. Es hat sich gezeigt, daß ein konisches Stützröllchen hier Abhilfe schafft. Bei geeigneter Dimensionierung läßt sich eine Erhöhung des Berstdrucks um bis zu 300% erreichen.Thanks to the new support technology, large-watt lamps with an output of more than 1000 watts can be filled with a high operating pressure (up to 70 bar). Typical is a mercury filling with 20 to 100 mg / cm 3 , maximum up to 150 mg / cm 3 . The large pistons have lengths of up to 120 mm and more and typical diameters of 100 mm. Because of the high operating pressure, the risk of the piston bursting must be countered. A careful analysis found the transition between the discharge volume and the bulb neck as a weak point. It has been shown that a conical support roller can help here. With suitable dimensions, the burst pressure can be increased by up to 300%.
In einer besonders bevorzugten Ausführungsform der Erfindung beträgt das Verhältnis zwischen dem Außendurchmesser des hinteren Endes des konischen Stützröllchens und dem Außendurchmesser des vorderen Endes des Stützröllchens zwischen 1,1 und 2,5.In a particularly preferred embodiment of the invention, the ratio between the outer diameter of the rear end of the conical support roller and the outer diameter of the front end of the support roller is between 1.1 and 2.5.
Ein wesentlicher Gesichtspunkt ist, daß die Wandstärke des Stützröllchens an seinem vorderen Ende möglichst klein sein soll, damit der Übergang von der Wandstärke des Kolbenhalses zu der des Systems Kolbenhals/Stützröllchen möglichst kontinuierlich ist. Gute Ergebnisse lassen sich erzielen, wenn die Wandstärke am vorderen Ende des Stützröllchens kleiner gleich, bevorzugt kleiner als 50%, der ursprünglichen Wandstärke des Kolbens an dieser Stelle ist. Dann ist die verstärkte Wandstärke nach dem Verschmelzen bzw. Anschmelzen maximal das 1,5-fache der ursprünglichen Wandstärke.An important aspect is that the wall thickness of the support roller at its front end should be as small as possible so that the transition from the wall thickness of the piston neck to that of the piston neck / support roller system is as continuous as possible. Good results can be achieved if the wall thickness at the front end of the support roller is less than or equal to, preferably less than 50%, the original wall thickness of the piston at this point. Then the reinforced wall thickness after melting or melting will be a maximum of 1.5 times the original wall thickness.
Vorteilhaft ist ein Bereich am vorderen Ende des Kolbenhalses (im folgenden Einzug genannt) frei vom Stützröllchen. Es wird empfohlen, daß der Einzug maximal dem Zweifachen des Außendurchmesser des Stützröllchens an dessen vorderem Ende entspricht. Absolut gesehen sollte der Einzug bevorzugt zwischen 3 und 25 mm betragen.An area at the front end of the piston neck (hereinafter referred to as indent) is advantageously free of the support roller. It is recommended that the feeder corresponds to a maximum of twice the outer diameter of the support roller at its front end. In absolute terms, the feed should preferably be between 3 and 25 mm.
Eine weitere Verbesserung und Optimierung der Berstdruckfestigkeit wird dadurch erzielt, daß die Kolbeninnenwand im Bereich des Einzugs an die konische Außenfläche vorne am Stützröllchen derart anschließt, daß der Winkel β zwischen der Stirnfläche des Stützröllchens und der Kolbeninnenwand im Bereich des Einzugs maximal 90°, bevorzugt höchstens gleich α und bevorzugt kleiner gleich α - 15° ist, wenn α der Winkel ist, der einem tangentialen Anschluß der Kolbeninnenwand an der Stirnfläche des Stützröllchens entspricht. Die Kolbeninnenwand im Bereich des Einzugs steht daher typisch über das Stützröllchen nach innen über.A further improvement and optimization of the burst pressure resistance is achieved in that the inner piston wall in the area of the intake connects to the conical outer surface at the front of the support roller in such a way that the angle β between the end face of the support roller and the inner wall of the piston in the intake area is a maximum of 90 °, preferably at most is equal to α and preferably less than or equal to α - 15 ° if α is the angle which corresponds to a tangential connection of the inner wall of the piston to the end face of the support roller. The inner wall of the piston in the area of the intake therefore typically projects inwards via the support roller.
Unter dem Begriff eines konischen Stützröllchens ist hier nicht ausschließlich ein Konus mit gerader Mantelfläche zu verstehen, sondern auch, daß die Erzeugende der konischen Mantelfläche eine geschwungene Kurve darstellt, so daß die Mantelfläche etwas ausgebaucht, aber insgesamt noch konisch, ist. Das konische Stützröllchen kann auch an seinem hinteren Ende ein kurzes zylindrisches Ansatzstück (maximal 30% der Gesamtlänge) mit konstantem Durchmesser besitzen. Dieses ist jedoch für die erfindungsgemäße Funktion bedeutungslos.The term a conical support roller is not only to be understood here as a cone with a straight lateral surface, but also that the generatrix of the conical lateral surface represents a curved curve, so that the lateral surface is somewhat bulged, but is still conical overall. The conical support roller can also have a short cylindrical extension (maximum 30% of the total length) with a constant diameter at its rear end. However, this is meaningless for the function according to the invention.
Die wichtigste Anwendung der vorliegende Erfindung bezieht sich darauf, daß der Kolben mit Quecksilber gefüllt ist, wobei die Füllmenge bis zu 150 mg/cm3, typisch 30 bis 100 mg/cm3, beträgt. Typische Leistungen der Lampe liegen bei mindestes 1 kW.The most important application of the present invention relates to the fact that the flask is filled with mercury, the filling amount being up to 150 mg / cm 3 , typically 30 to 100 mg / cm 3 . Typical lamp outputs are at least 1 kW.
Die erzielte Drucksteigerung wird durch eine bessere geometrische Anpassung der Wanddicken beim Übergang zwischen der reinen Kolbenwand und der durch das Stützröllchen verstärkten Wand erreicht. Dadurch kann letztlich der Kolbenhals an dieser Stelle konisch verengt werden. Bevorzugt ist ein maximaler Außendurchmesser des Stützröllchens von bis zu 20 mm, insbesondere bis zu 15 mm, am hinteren Ende. Insgesamt wird also ein geringerer Durchmesser, und damit auch eine kleinere Oberfläche, im vorderen Bereich des Kolbenhalses geschaffen. Dadurch wird der Berstdruck erhöht. Die Verbindung zwischen Kolbenhals und Stützröllchen wird durch das an sich bekannte Aufschmelzen des Kolbenhalses auf das vorne schmalere Stützröllchen geschaffen.The pressure increase achieved is achieved by a better geometric adaptation of the wall thicknesses at the transition between the pure piston wall and the wall reinforced by the support roller. This ultimately allows the piston neck to be conically narrowed at this point. Is preferred a maximum outer diameter of the support roller of up to 20 mm, in particular up to 15 mm, at the rear end. Overall, a smaller diameter, and thus also a smaller surface, is thus created in the front area of the piston neck. This increases the burst pressure. The connection between the piston neck and the support roller is created by the known melting of the piston neck onto the support roller, which is narrower at the front.
Durch den Einzug am Kolbenhals ergibt sich eine günstigere Verteilung der durch den Innendruck der Füllung verursachten Kraft im Kolbenhals. Der Kolbenhals ist ein empfindlicher Bereich der Lampe. Es hat sich herausgestellt, daß die Druckstabilität des Kolbenhalses mit dem Verhältnis Wandstärke:Durchmesser steigt. Bei gleicher Wandstärke wird daher eine erhöhte Stabilität dadurch erzielt, daß der Durchmesser der Verbindungsstelle verringert wird durch das konische Stützröllchen.The retraction on the piston neck results in a more favorable distribution of the force in the piston neck caused by the internal pressure of the filling. The bulb neck is a sensitive area of the lamp. It has been found that the pressure stability of the piston neck increases with the ratio of wall thickness: diameter. With the same wall thickness, increased stability is therefore achieved in that the diameter of the connection point is reduced by the conical support roller.
Im folgenden soll die Erfindung anhand mehrerer Ausführungsbeispiele näher erläutert werden. Es zeigen:
Figur 1- eine Quecksilber-Hochdruckentladungslampe im Schnitt
Figur 2- ein weiteres Ausführungsbeispiel eines Stützröllchens
Figur 3- ein weiteres Ausführungsbeispiel eines Stützröllchens
- Figure 1
- a high-pressure mercury discharge lamp in section
- Figure 2
- another embodiment of a support roller
- Figure 3
- another embodiment of a support roller
Figur 1 zeigt eine Quecksilber-Hochdruckentladungslampe 1 mit einer Leistung von 2,5 kW im Schnitt. Sie hat einen Kolben 2 aus Quarzglas mit einer Wandstärke von 4 mm. Er ist elliptisch, tonnenförmig o.ä. geformt und umschließt ein Entladungsvolumen 3. Daran schließen sich an beiden Seiten diametral gegenüberstehend zwei Kolbenhälse 4 an (nur einer ist gezeigt).Figure 1 shows a mercury high-
Diese besitzen einen vorderen konischen Teil 4a, der ein Stützröllchen 5 aus Quarzglas enthält, und einen hinteren zylindrischen Teil 4b, der die abdichtende Einschmelzung bildet. Der vordere Teil 4a weist einen Einzug 6 von 5 mm Länge auf. Daran schließt sich ein Stützröllchen 5 mit Bohrung 7 an, das konisch geformt ist. Sein Innendurchmesser ist 7 mm, sein Außendurchmesser am vorderen Ende ist 11 mm, der Außendurchmesser am hinteren Ende ist 15 mm. Die Wandstärke des Kolbens in diesem Bereich ist etwa 4 mm. Die axiale Länge des Stützröllchens ist 22 mm.These have a front
In der Bohrung 7 des Stützröllchens ist ein Elektrodenstab 10 mit einem Durchmesser von 6 mm axial geführt, der bis in das Entladungsvolumen reicht, und dort einen Elektrodenkopf 11 als Anode trägt. Der Stab 10 ist über das Stützröllchen 5 hinaus nach hinten verlängert und endet an einem Teller 12, an den sich ein zylindrischer Quarzblock 13 anschließt. Dahinter folgt ein zweiter Teller 14, der mittig eine Außenstromzuführung in Form eines Molybdänstabs 15 hält. An der Außenfläche des Quarzblocks sind vier Folien 16 aus Molybdän in an sich bekannter Weise entlanggeführt und an der Wand des Kolbenhalses eingeschmolzen.In the
Die Kolbeninnenwand ist am Vorderende des Stützröllchens in etwa tangential über die Mantelfläche des Stützröllchens hinaus weitergeführt, d.h. β=α.The inner wall of the piston continues at the front end of the support roller approximately tangentially beyond the lateral surface of the support roller, i.e. β = α.
Das konische Stützröllchen 5 führt zu einer Steigerung des Berstdrucks um 200 %, verglichen mit dem o.e. Stand der Technik. Durch den Einzug von 5 mm wird der Berstdruck um weitere 100% erhöht.The
Figur 2 zeigt ein Stützröllchen 20, dessen äußere Mantelfläche 21 leicht konvex ausgebaucht ist. Das Verhältnis der Außendurchmesser am vorderen und am hinteren Ende ist 1,9.Figure 2 shows a
Figur 3 zeigt ein Stützröllchen 25 mit gerader Mantelfläche 26 und einem Verhältnis der Außendurchmesser am vorderen und am hinteren Ende von 1,4. Am hinteren Ende kann ein zylindrisches Ansatzstück 27 mit konstantem Außendurchmesser sitzen. Seine Länge beträgt etwa 10% der Gesamtlänge des Stützröllchens 25. Am vorderen Ende, wo sich die Stirnfläche 28 befindet, ist die Kolbeninnenwand 29 so an das Stützröllchen 25 angeschlossen, daß sie einen Winkel von β = 70° mit der Stirnfläche 28 bildet. Dagegen beträgt der Tangentialwinkel α = 86°.Figure 3 shows a
Claims (10)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19825004 | 1998-04-24 | ||
| DE19825004A DE19825004A1 (en) | 1998-04-24 | 1998-04-24 | High pressure discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0952608A1 true EP0952608A1 (en) | 1999-10-27 |
| EP0952608B1 EP0952608B1 (en) | 2002-12-18 |
Family
ID=7869915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99107029A Expired - Lifetime EP0952608B1 (en) | 1998-04-24 | 1999-04-09 | High pressure discharge lamp |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6262535B1 (en) |
| EP (1) | EP0952608B1 (en) |
| JP (1) | JPH11329358A (en) |
| DE (2) | DE19825004A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3591439B2 (en) * | 2000-09-21 | 2004-11-17 | ウシオ電機株式会社 | Short arc discharge lamp |
| KR20030016385A (en) * | 2001-05-10 | 2003-02-26 | 코닌클리즈케 필립스 일렉트로닉스 엔.브이. | High-pressure gas discharge lamp |
| JP3858718B2 (en) * | 2002-02-13 | 2006-12-20 | ウシオ電機株式会社 | Short arc discharge lamp |
| DE102004002455A1 (en) * | 2003-03-14 | 2004-09-23 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Lamp e.g. high pressure discharge lamp, construction assembly for photo-optical purpose, has molybdenum film provided with coating in region of contact face, where film is welded to component in region of face to supporting roll |
| JP4487969B2 (en) * | 2006-04-10 | 2010-06-23 | ウシオ電機株式会社 | Discharge lamp |
| DE102006030275A1 (en) * | 2006-06-30 | 2008-01-03 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Protective cover for lamps and associated structural unit |
| KR101078514B1 (en) * | 2007-03-12 | 2011-10-31 | 오스람 아게 | Discharge lamp and method for producing a discharge lamp |
| JP5080327B2 (en) * | 2008-03-21 | 2012-11-21 | 株式会社オーク製作所 | Discharge lamp with sealing structure |
| JP5773252B2 (en) * | 2011-03-28 | 2015-09-02 | 岩崎電気株式会社 | Short arc type discharge lamp |
| WO2012171144A1 (en) * | 2011-06-17 | 2012-12-20 | 盐城豪迈照明科技有限公司 | Hid arc tube, manufacturing method thereof, illumination device and illumination system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1108772A (en) * | 1964-07-28 | 1968-04-03 | Mini Of Technology | High pressure electrical discharge lamps |
| US5569978A (en) * | 1994-04-19 | 1996-10-29 | Ilc Technology, Inc. | Flash lamp with O-ring electrode seals |
| DE19618967A1 (en) * | 1995-05-16 | 1996-11-21 | Ushio Electric Inc | Gas discharge lamp |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0418198Y2 (en) * | 1986-02-24 | 1992-04-23 | ||
| JPH02140755U (en) * | 1989-04-28 | 1990-11-26 | ||
| JPH0530282Y2 (en) * | 1989-07-31 | 1993-08-03 | ||
| DE4030820A1 (en) * | 1990-09-28 | 1992-04-02 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | HIGH PRESSURE DISCHARGE LAMP |
| DE4031116A1 (en) | 1990-10-02 | 1992-04-09 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | High pressure discharge lamp and method for producing the lamp |
| DE4031117A1 (en) * | 1990-10-02 | 1992-04-09 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | High pressure discharge lamp and method for producing the lamp |
| JP2596889Y2 (en) * | 1993-03-26 | 1999-06-21 | ウシオ電機株式会社 | Discharge lamp |
-
1998
- 1998-04-24 DE DE19825004A patent/DE19825004A1/en not_active Withdrawn
-
1999
- 1999-04-09 EP EP99107029A patent/EP0952608B1/en not_active Expired - Lifetime
- 1999-04-09 DE DE59903804T patent/DE59903804D1/en not_active Expired - Fee Related
- 1999-04-12 US US09/290,497 patent/US6262535B1/en not_active Expired - Fee Related
- 1999-04-22 JP JP11114921A patent/JPH11329358A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1108772A (en) * | 1964-07-28 | 1968-04-03 | Mini Of Technology | High pressure electrical discharge lamps |
| US5569978A (en) * | 1994-04-19 | 1996-10-29 | Ilc Technology, Inc. | Flash lamp with O-ring electrode seals |
| DE19618967A1 (en) * | 1995-05-16 | 1996-11-21 | Ushio Electric Inc | Gas discharge lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11329358A (en) | 1999-11-30 |
| DE19825004A1 (en) | 1999-10-28 |
| DE59903804D1 (en) | 2003-01-30 |
| EP0952608B1 (en) | 2002-12-18 |
| US6262535B1 (en) | 2001-07-17 |
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