EP1843380B1 - Méthode et dispositif pour doser une quantité de mercure exactement contrôlable dans une lampe à décharge - Google Patents

Méthode et dispositif pour doser une quantité de mercure exactement contrôlable dans une lampe à décharge Download PDF

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Publication number
EP1843380B1
EP1843380B1 EP06007445A EP06007445A EP1843380B1 EP 1843380 B1 EP1843380 B1 EP 1843380B1 EP 06007445 A EP06007445 A EP 06007445A EP 06007445 A EP06007445 A EP 06007445A EP 1843380 B1 EP1843380 B1 EP 1843380B1
Authority
EP
European Patent Office
Prior art keywords
metering
mercury
bore
feed channel
discharge vessel
Prior art date
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.)
Not-in-force
Application number
EP06007445A
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German (de)
English (en)
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EP1843380A1 (fr
Inventor
Petar Stanic
Jürgen REMDE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Flowil International Lighting Holding BV
Original Assignee
Flowil International Lighting Holding BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to EP08100654A priority Critical patent/EP1912242A3/fr
Priority to EP06007445A priority patent/EP1843380B1/fr
Priority to AT06007445T priority patent/ATE424620T1/de
Priority to DE502006003007T priority patent/DE502006003007D1/de
Priority to DE200620020463 priority patent/DE202006020463U1/de
Application filed by Flowil International Lighting Holding BV filed Critical Flowil International Lighting Holding BV
Priority to US11/783,194 priority patent/US7695336B2/en
Publication of EP1843380A1 publication Critical patent/EP1843380A1/fr
Application granted granted Critical
Publication of EP1843380B1 publication Critical patent/EP1843380B1/fr
Priority to US12/656,973 priority patent/US20100159791A1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/395—Filling vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury

Definitions

  • the invention relates to a method for introducing a precisely metered amount of mercury in the discharge vessel of a lamp, in particular in a straight fluorescent lamp, wherein the discharge vessel is connected to a lamp holder and acted upon by the lamp holder with a gas stream and further via a mercury introduction channel with a predetermined amount of Mercury is filled. Furthermore, the invention relates to a corresponding device.
  • Fluorescent lamps are produced on fully automatic production machines, where lamp blanks in a horizontal position undergo various processes. These include: baking out the phosphors slurried into the discharge vessel, melting an electrode at the end of the discharge vessel, evacuating the discharge vessel, filling the discharge vessel with an inert filling gas, introducing a predetermined amount of mercury and then hermetically sealing the discharge vessel at both ends of the discharge tube ,
  • the heating of the mercury strip in the finished lamp has the consequence that possibly other unwanted components, in particular H 2 are released from the metal strip, which negatively influence the ignition and burning properties of the lamp.
  • a getter material is usually additionally attached to the metal strip, which also has to be heated inductively to activate it.
  • the heating necessary to activate the getter or to release the mercury is achieved by inductive energy input, wherein a very strong alternating electromagnetic field must be applied for heating the metal strip to 900 ° to 1000 ° over a period of 10 to 30 seconds.
  • the energy consumption at a lamp throughput of 7000 / h is considerable and the energy efficiency of this method is extremely low.
  • the production of the metal strip with pressed-on mercury and getter compounds (usually in welded ring form) and the handling in the lamp manufacturing make the getter tape technology very expensive and expensive.
  • JP 55-43729 A A generic method and a corresponding device for introducing a precisely metered amount of mercury is already out of the JP 55-43729 A known.
  • JP 55-43729 A a device for introducing a quantity of mercury into an elongate discharge vessel 13 of a lamp is described.
  • the decor is located in this case between the discharge vessel 13 connected to the device and a horizontal, also elongated main shaft or piston 2 of a suction nozzle connected to the device.
  • a stationary shaft or piston 4 Arranged essentially axially symmetrically with respect to the outer dimensions of the device, a stationary shaft or piston 4 extends over the greater part of the distance between the end of the discharge vessel 13 facing the device and the end of the main shaft 2 facing the device Discharge vessel 13, the main shaft 2 and the shaft 4 match.
  • the mercury sump 24 extends axially symmetrically, which essentially represents a cavity that runs like a tube along the longitudinal axis of the shaft 4.
  • the shaft 4 around the shaft 4 is an elongated mercury separation sleeve 6, in such a way that the shaft 4 lies in the interior of the mercury separation sleeve 6, forming its quasi core, and that their longitudinal axes also coincide.
  • the mercury separation sleeve 6 in turn, there is an elongate mercury reservoir body 9, in such a way that the mercury separation sleeve 6 lies in the interior of the mercury reservoir body 9, by virtually forming its core, and their longitudinal axes also coincide.
  • the shaft 4, the mercury separation sleeve 6 and the mercury reservoir body 9 are three slidably fitting sleeves, which are slidably abutting one another as in one another.
  • a mercury ladle 8 eccentrically mounted with respect to the longitudinal axis of the mercury reservoir body 9 is provided.
  • a mercury lake 18 is provided at the bottom of a larger cavity inside the device, the device comprising a hollow cylindrical housing 7.
  • the longitudinal axis of the hollow cylindrical housing 7 in turn coincides with the longitudinal axis of the shaft 4, the mercury separation sleeve 6 and the mercury reservoir body 9.
  • the diameter of the housing 7 in the illustrated embodiment of the device is about three times as large as the diameter of the mercury reservoir body 9.
  • the upper edge of the mercury lake 18 is located immediately below the mercury reservoir body 9.
  • the mercury ladle 8 is used to absorb mercury from the mercury lake 18 during rotation of the mercury reservoir body 9 about its longitudinal axis.
  • the mercury ladle 8 When the mercury ladle 8 has moved through the mercury lake 18 about its longitudinal axis during the rotation of the mercury reservoir body 9 and is then significantly above the level of the mercury lake 18, the mercury passes through the channel present in the interior of the mercury ladle 8 and finally arrives at the adjacent one Mercury separation sleeve 6, where the mercury fills the mercury separation hole 19 and the flow is blocked in the direction of the mercury sump 24, and until such time by a lever 5, the mercury separation sleeve 6 is rotated relative to the shaft 4 such that the connecting holes 22, 23 and the in the mercury separation sleeve 6 existing mercury separation hole 19 are superimposed.
  • the mercury reservoir body 9 and the shaft 4 are constantly set relative to one another in such a way that the connecting bore 22 and the connection or transmission bore 23 present in the shaft 4 are aligned. That is, when the communication hole 22 and the mercury separation hole 19 are superimposed, the communication hole 23 and each of the mercury separation hole 19 and the communication hole 22 are superimposed. In this position, then the metered portion of the mercury in the mercury separation hole 19 through which the connecting hole 23 through the mercury sump 24 to flow, followed by a gas flow from the housing 7 through the connecting hole 22nd
  • JP 55-43729 A further comprises a switching mechanism to which, in addition to the shaft 4, the mercury separation sleeve 6 and the mercury reservoir body 9, among others, the other connection or transmission bores 10, 11 and 12 include.
  • this switching mechanism a gas flow over the bypass channel comprising the connecting bores 10, 11 and 12 past the amount of mercury to be introduced in the mercury separation bore 19 during a preparation step and locked during a filling step of the bypass channel 10-12.
  • the gas flow is used to entrain the amount of mercury to be introduced.
  • the object of the present invention is in contrast to provide a method for introducing a precisely metered amount of mercury in the discharge vessel of lamps, with which the dosage can be made much more accurate than in the prior art. Furthermore, a corresponding device should be specified.
  • a core idea of the invention is that the metering volume is designed as a metering bore, wherein its cross-sectional shape is formed substantially in the shape of an isosceles triangle.
  • a known per se aspect of the invention is to bring the total gas flow for the process of introduction behind the already predosed droplets of mercury, to let the droplets through the gas flow in the discharge vessel entrain.
  • the dosage of the droplet could already be made spatially separated or well in advance, it is preferred if the metering takes place through or within the metering volume. However, it is ensured that exactly the predosed amount of mercury is ready for filling into the discharge vessel.
  • the drop is formed as a structure of at least approximately spherical shape.
  • the device is accordingly provided in a further preferred embodiment with a metering bore which is dimensioned so that the drop is formed therein into a single, fixed by the metering bore in the circumference to a predetermined diameter ball.
  • the metering bore is designed so that the drop has space only as a sphere.
  • the metering bore was elongated, so that the mercury has split into a plurality of small balls.
  • this division is not reproducible, the balls are small and are poorly promoted.
  • deflections with angles greater than or equal to 90 ° are advantageously avoided.
  • the drop over two deflections, each with about 45 ° can be performed.
  • a curved acceleration channel can be further provided that this opens kink-free and / or steplessly in the feed channel.
  • the drop of mercury is guided in such a way that steps or edges in the direction of introduction are avoided during transitions.
  • Corresponding transitions can be formed either completely flat or the droplets can be guided so that the diameter of guide means at the transitions widened, so that the drop of mercury in the direction of motion encounters no obstacle.
  • the metering volume may have a length substantially equal to the diameter of a circle inscribed in the cross section of the metering well.
  • the length of the metering well may also be sized slightly shorter than the diameter of a circle inscribed in the cross section of the metering well to ensure that the mercury flow is cut off above the metering well despite the high surface tension of the mercury the metering hole actually only makes exactly one drop.
  • the object of the present invention is also achieved by a device for introducing a precisely metered amount of mercury into the discharge vessel of lamps, in particular straight fluorescent lamps, as defined in claim 10.
  • the gas stream is redirected during introduction of the drop of mercury such that the drop is entrained by the gas flow into the discharge vessel.
  • the metering volume is designed as a metering bore and dimensioned such that a drop of at least approximately spherical shape is formed.
  • the metering bore of the device according to the invention is formed with walls which are shaped or aligned with one another so that the droplets formed at least approximately in spherical form only touch the walls of the metering bore pointwise or in sections.
  • the formation of a sphere or spherical shape approximated compact structure is thus favored;
  • frictional forces are reduced during the subsequent release from the metering bore.
  • the metering bore is formed as a recess with a cross-sectional shape substantially in the shape of an isosceles triangle.
  • the legs of the isosceles triangle may be arranged to extend in a straight line in a first embodiment, in an alternative embodiment, they may be based on the interior of the dosing bore also convex or concave running.
  • an acceleration channel is provided between the dosing unit and the feed channel, which is aligned so that the drop is transferred by utilizing the gravitational force with an additional gravitational pulse into the feed channel.
  • the divided into a plurality of individual spheres mercury also accelerated by gravitational force hits the feed channel.
  • an additional gravitational pulse is used for the transport of the mercury within the feed channel in the direction of the discharge vessel.
  • Acceleration channel and feed channel can be arranged relative to each other so that the acceleration channel opens at an angle ⁇ 90 °, preferably ⁇ 60 °, more preferably ⁇ 50 ° in the feed channel. This ensures undisturbed transport of the mercury from the acceleration channel into the feed channel.
  • the bypass channel opens into the feed channel and has one or more inlet openings facing away from the discharge vessel for charging the discharge vessel with a gas stream, in particular with inert filling gas.
  • the at least one, preferably two or more inflow openings can be closed with covers, the inflow openings being arranged off-axis relative to the feed channel.
  • inflow opening (s) and cover (s) can be opened or closed by rotating the inflow openings relative to the covers or the covers relative to the inflow openings.
  • the dosing unit comprises a tilting spoon unit, which is mounted coaxially to the feed channel and can be tilted between a dosing position and a release position, wherein the tilting with the rotation of the lamp holder takes place in that the center of gravity of the tipper unit by their geometric configuration and / or by an additional trim weight is well outside its axis of rotation about the feed channel.
  • a separate drive of Kipplöffelmaschine is not required; Rather, the change takes place between dosing and release position solely due to a triggered by gravity tilting movement with rotation of the lamp holders, which - as from US Pat. No. 2,699,279 respectively.
  • US 2,726,799 known per se - can be arranged equidistantly spaced in a predetermined number on a circular disk rotating in the production process.
  • the tilting spoon unit comprises a scooping arm with a spoon arranged on its end side.
  • the center of gravity of the tilting spoon unit is spaced by a distance from the axis of rotation, which in about 5% to 25% of Total radial extent of the scoop including the spoon from the pivot point to its radially outermost point corresponds.
  • the spoon on its side facing away from the scoop arm on a radially outwardly, in particular to a ridge or a tip tapered roof, which promotes drainage of mercury the radial outer side of the spoon.
  • mercury which is located on the radially outer side of the spoon, not on the tipper unit along toward the inflow opening and / or yet to be explained gas passage bore, which is aligned in the release position with the metering bore, can flow.
  • the feed channel has an upstream first portion and a downstream second portion coaxially aligned with each other and at the same time rotatably supported against each other about their common axis.
  • the first section engages with a conical surface in a facing opening of the second section.
  • the opening of the second section can preferably have an extension matched to the angle of the conical surface.
  • the first portion of the feed channel relative to the associated lamp holder is rotatably mounted, this is preferably achieved in that the first portion of the feed channel is rotatably mounted in a relative to the associated lamp holder fixed dosing sleeve.
  • the dosing sleeve can comprise the dosing bore according to the invention and furthermore a bearing for the tilting spoon unit as well as for a central inner part, in which also the bypass channel and the inflow opening (s) are formed form.
  • the first portion of the feed channel is formed in a central inner part and rotatably mounted in a relative to the associated lamp holder fixed dosing sleeve.
  • the bypass channel may preferably be formed. This opens at its one end in the first section of the feed channel. At the opposite end it forms one or more inflow openings for the entry of a gas flow into the bypass channel.
  • the already mentioned covers for closing the inflow opening (s) are fixed relative to the fixed metering sleeve, preferably formed integrally with the metering sleeve.
  • this has the consequence -as out JP 55-43729 A known per se, that at the same time the inflow openings can be brought into coincidence with the covers or out of overlap with the covers with pivoting of the tipper unit relative to the fixed dosing.
  • this causes that in a preparation step, the inflow openings are not covered by the covers, so that flows past in the preparation step, the gas flow through the inflow through the bypass channel at the drop. Only in the filling step, the inflow openings are blocked by the covers by rotation of the metering sleeve relative to the inner part, so that in this way the bypass channel is blocked.
  • the gas stream is then passed over the metering volume and entrains the drop in the discharge vessel.
  • the tipper unit may be provided with an already mentioned gas passage bore which, in the release position of the tipper unit, is aligned with the metering bore so that the pressure of the inflation gas present at the gas passage bore effects the transport of the drop into the feed passage.
  • the gas passage bore can have deflection means, in particular a deflection sleeve, in order to keep excess mercury draining from the metering unit away from the gas passage bore in the respective metering operation. In this way it is avoided that mercury passing along the tipper unit passes into the gas passage bore and thus, in addition to the exactly predosed droplet, further mercury likewise passes into the feed channel.
  • deflection means in particular a deflection sleeve
  • FIG. 1 is a longitudinal section through an embodiment of a lamp holder 11 according to the invention shown in a longitudinal section.
  • the lamp holder 11 comprises first a housing 61 and a housing 43 mounted on the holder, in which a discharge vessel 13 of a fluorescent lamp to be produced via a discharge vessel fused pump tube 44 is held.
  • the holder 43 includes sealing means 45, which may be concretely formed as an annular sealing rubber.
  • the discharge vessel 13 is also supported at its opposite end by a holder in a lamp holder, which may be formed differently from the lamp holder 11 described here, but is known per se from the prior art.
  • the opposite lamp holder for example, evacuate the discharge vessel 13 via a second pump tube fused to the associated end or support a flushing with filling gas by means of a suction.
  • the relevant and illustrated lamp holder 11 comprises an inner space 42, which is in flow connection with the pumping tube 44 inserted via a feed line 19, in particular a rectilinear one, with the discharge vessel 13.
  • the feed channel 19 defines a central axis 50.
  • the interior 42 of the lamp holder 11 can be acted upon by a filling gas 46 with filling gas, which projects with an inlet 60 in the vicinity of the axis 50 of the substantially rotationally symmetrical about this axis 50 formed interior 42.
  • mercury lake 47 Within the interior 42 is still a supply of mercury, which forms a mercury lake 47.
  • the mirror of the mercury lake 47 is always sufficiently below the centrally arranged feed channel 19 and the inlet 60 of the filling gas 46.
  • a predetermined amount of mercury can be transferred from the mercury lake 47 into the central feed channel 19 via a metering unit 15 and then be introduced into the discharge vessel 13 with the aid of a filling gas stream.
  • the dosing unit 15 initially comprises a relative to the lamp holder 11 fixed dosing sleeve 38 which is aligned coaxially with the feed part 19 formed in an inner part 41 and encloses this.
  • the dosing sleeve 38 has an outer portion 48 with which it is rotatably connected to the housing 61 of the lamp holder 11 and an inner portion 49 on which a Kipplöffelmaschine 28 - as another element of the dosing unit 15 - to the through the (central) feed channel 19 defined axis 50 is rotatably mounted.
  • the inner part 41 of the dosing unit 15 simultaneously comprises a first section 33 of the feed channel 19 and a bypass channel 64 opening into this first section 33 of the feed channel 19.
  • the first section 33 of the feed channel 19 and the bypass channel 64 are thus rotatable relative to the housing of the lamp holder 11 the axle 50 stored.
  • the aforementioned second portion 34 is formed with respect to the housing of the lamp holder 11 as a separate component or integral with the metering sleeve 38 fixed.
  • the first portion 33 of the feed channel 19 for improved cooperation with the second portion 34 of the feed channel at its end facing the second portion 34, a conical surface 35 which engages in an associated opening 36 of the second portion 34.
  • the second section 34 preferably forms at its opening 36 at the same time an extension 37 which is matched to the conical surface 35 of the first section 33, so that the occurrence of an uncontrolled gap as possible according to the prior art is avoided.
  • the tipper unit 28 is with rotation of the lamp holder 11, which will be explained below with reference to the explanation of Fig. 3 will be described in more detail, tiltable between a metering position (preparation step) and a release position (filling step).
  • the dosing position or the release position represent the end positions of a pivoting movement of the tipper unit 28 about the axis 50 of the feed channel 19 and the dosing sleeve 38, on which the tipper unit 28 as described above is stored. These end positions are determined by the dimensioning of the slot 52 in the metering sleeve 38.
  • the lamp holder 11 is off along the line CC Fig. 1 , in Fig. 3 along the line AA Fig. 1 and in Fig. 4 off along the BB line Fig. 1 illustrated, in which representation, the tipper unit 28 is in its first position, namely the dosing position (preparation step).
  • the tipper unit 28 comprises a relative to the axis 50 radially outer spoon 31 which is connected via a scooping 30 with a substantially annular inner portion 53.
  • spoon 31, scoop arm 30 and the substantially annular inner portion 53 are integrally formed.
  • the tipper unit 28 from the mercury lake 47 can absorb mercury and lead via a channel 54 within the scoop arm 30 to a metering volume, specifically to a metering bore 21 in the dosing sleeve 38.
  • a drain 55 is provided in the inner part 41 of the metering unit 15, said drain 55 of the inner part 41 in the metering position of the tilting spoon unit 28 being aligned with the metering bore 21.
  • the metering sleeve 38 has at its end facing away from the outer portion 48 still two covers 65, 66 which protrude beyond the inner portion 49 in the axial direction and form part of a still closer to be explained switching mechanism 63 for the guided into the discharge vessel 13 gas flow.
  • the covers 65, 66 have a radius of the Abweisthrough 57 according to rounded inner surface 67, 68, which slides as close to the outside of the deflector 57.
  • the covers 65, 66 which are formed as above the inner portion protruding Flunken, cover in the release position (filling step) diametrically formed on the shell side of the deflector 57 inlet openings 26 in the inner part, so that in the filling step, the gas flow through the bypass channel 64 is blocked.
  • the process controlled by the tilting bucket unit 28 will be explained again in context. If the tipper unit 28 after the metering bore 21 is filled with a predetermined amount of mercury, tilted into the release position (by tilting clockwise from the in the Fig. 2 . 3 and 4 Dosing position shown), passes a gas passage hole 39 in the annular inner portion 53 of the Kipplöffelmaschine 28 in an aligned with the metering bore 21 alignment. At the same time, the inner part 41 of the dosing unit 15 is entrained with this tilting of the tipper unit 28, so that an acceleration channel 25 within the inner part 41 also comes into alignment with the dosing bore 21.
  • the metering bore according to the invention in the form of a triangular hole 18, that is formed as a through hole with a triangular cross-sectional shape.
  • the triangle is identically defined in the present embodiment with each rectilinear legs, with different designs are conceivable.
  • One consideration here is that the mercury received in the metering bore 21 forms into a single drop 16 which has as few points of contact with walls 22 to 24 of the metering bore 21 as possible. If a maximum amount of mercury (depending on the lamp type) of 5 mg or 10 mg given by European regulations is used, the calculated diameter of the drop 16, which is as spherical as possible, is 0.89 mm or 1.12 mm.
  • the drop 16 of mercury formed in the metering bore can enter the acceleration channel 25 of the inner part 41.
  • the acceleration channel 25 within the inner part 41 is arranged at an angle of 45 ° in the present embodiment.
  • a 90 ° transition during transport of the drop 16 from the metering bore 21 into the feed channel 19 is avoided, which made the transport of mercury considerably more difficult in the prior art;
  • the here proposed orientation of the acceleration channel 25 of the droplets 16 is also accelerated by the gravity acting on them, without this pulse would go completely lost when entering the feed channel 19.
  • transitions 17 between the metering bore 21 and the acceleration channel 25 or between the acceleration channel 25 and the feed channel 19 or between the feed channel 19 and pump tube 44 are formed such that the drop 16 encounters no obstacles formed as steps in the transport direction.
  • the inner part 41 of the metering unit 15 is provided at its end facing away from the pump tube 44 with a deflector 27 which is designed to prevent accidental entry of accumulating on the Kipplöffeliki 28 mercury in the pump tube 44 facing away from the inlet opening 26 of the feed channel 19.
  • the deflector 27 is formed here in the form of a groove 56.
  • this top side of the spoon 31 is designed as a roof 32 (cf. Fig. 1 ), ie with surfaces inclined to the horizontal, so that mercury can drain off.
  • deflection means 40 are also provided on the gas passage bore 39 provided in the annular inner section 53 of the tilting-bucket unit 28, which in this case is specifically designed as a projection sleeve (v. Fig. 3 ) may be formed. This also avoids that mercury draining from the tipper unit 28 can pass directly into the feed channel 19 without passing through the metering bore 21.
  • the Kipplöffelmaschine 28 is still equipped with an additional trim weight 29, which is secured by a fixing screw 58 on the scoop 30 in the vicinity of the spoon 31.
  • Fig. 9 is shown on the basis of a schematic diagram of the rotation of the pump / filling machine to which a plurality of lamp holders 11 may be attached.
  • the plurality of lamp holders 11 rotate about a central axis of rotation of the pumping / filling machine along a circular path.
  • the tipper unit 28 tilts periodically from the dosing position (preparation step) to the release position (filling step) and from the release position back into the dosing position.
  • the tipper unit 28 In positions A and B, the bucket 31 is completely submerged in the mercury lake 47 and exits the mercury lake 47 at position C filled with mercury so that both buckets 31 and channel 54 are filled with mercury.
  • the tipper unit 28 In the positions D and E, the tipper unit 28 is still in the dosing position, in which case the mercury present in the channel 54 can enter the dosing bore 21.
  • the tipper unit 28 In the positions F and G, the tipper unit 28 is transferred by a rapid tilting into the release position, so that the formed in the metering bore 21 ball 16 of mercury via the acceleration channel 25 in the central feed channel 19 and from there into the discharge vessel 13 can occur.
  • a Geargaset which can be generated, for example, characterized in that on the opposite side of the discharge vessel in the discharge vessel such a negative pressure is generated that at the right moment, when the ball 16 arrives at the entrance of the pumping tube 44, a Geargarace from the Geartechnisch 46 in the feed passage 19 via the inflow opening 26 and the gas passage bore 39 is passed.
  • the tipper unit 28 tilts from the release position back to the dosing position.
  • Fig. 10 the dosing sleeve 38 is shown in a perspective view.
  • the metering sleeve 38 comprises the already mentioned outer portion 48 for insertion into the housing 61 of the lamp holder 11 and an inner diameter smaller dimensioned in the outer diameter inner portion 49.
  • the already mentioned slot 52 and formed with a triangular cross-section metering bore 21 is arranged
  • Fig. 11 shows the dosing sleeve 38 after Fig. 10 in a side view.
  • Fig. 12 is a side view and in Fig. 13 a perspective side view of the inner part 41 of the dosing unit 15 is shown.
  • the inner part 41 comprises the already mentioned first section 33 of the feed channel 19.
  • the inner part 41 For connection to the second section 34 of the feed channel 19, the inner part 41, the already mentioned conical surface 35 at its one end face on.
  • the centrally continuous first section 33 of the feed channel 19 forms the inflow opening 26, also mentioned above, which is protected by the rejection device 27 comprising groove 56 and deflector plate 57, as well as possible against undesired inflowing mercury.
  • From lateral surface of the inner part 41 of the acceleration channel 25 extends in the direction of the first portion 33 of the feed channel 19 at 45 °.
  • a bore 59 for receiving the driving screw 51 (not shown here) and the drain 55 for the removal of Mercury when filling the metering bore 21 of the associated metering sleeve 38th
  • Fig. 14 and 15 is one of the presentation in the Fig. 1 and 5 a different sectional view to illustrate the operation of the switching mechanism 63, which includes the diametrically arranged inlet openings 26 in the inner part 41 and the covers 65, 66 which are integrally formed with the metering sleeve 38 includes.
  • the dosing position (preparation step) is illustrated. In this position, the switching mechanism 63 leads the gas flow over the inlet openings 26 and the bypass channel 64 past the metering bore 21 formed as a triangular hole 18.
  • Fig. 15 the arrangement is shown in the release position (filling step).
  • the covers 65, 66 close the inflow openings 26 of the bypass channel such that the gas flow is now guided over the metering volume or the metering bore 21 and thus entrains the droplets 16 into the discharge vessel 13.

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  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
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Claims (29)

  1. Procédé d'introduction d'une quantité exactement dosable de mercure dans l'enceinte de décharge d'une lampe, en particulier dans une lampe fluorescente droite, l'enceinte de décharge (13) étant raccordée à un logement de lampe (11) et soumise à un flux de gaz via le logement de lampe (11) et encore remplie d'une quantité prédéfinie de mercure via un canal d'introduction de mercure,
    le mercure étant, à une étape préparatoire effectuée lors du dosage de la quantité de mercure à introduire ou après celui-ci, mis sous forme de goutte unique et cohérente (16) dans un volume de dosage (21),
    la quantité totale de mercure à introduire étant ensuite, à une étape de remplissage, transportée dans l'enceinte de décharge (13) en conservant la goutte précédemment formée (16) et
    un mécanisme de commutation (63) étant prévu qui, pendant l'étape préparatoire, conduit le flux de gaz par un canal de dérivation (64) contournant la goutte (16) et, pendant une étape de remplissage, barre le canal de dérivation (64) de façon que le flux de gaz, pendant le barrage du canal de dérivation (64), soit conduit par le volume de dosage (21) et entraîne la goutte (16) dans l'enceinte de décharge (13), le volume de dosage (21) étant constitué comme alésage de dosage (21),
    caractérisé en ce que
    la forme en coupe transversale de l'alésage de dosage (21) est sensiblement constituée en triangle isocèle.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    dans la forme en coupe transversale de l'alésage de dosage (21), les côtés du triangle isocèle sont disposés selon un tracé rectiligne.
  3. Procédé selon la revendication 1,
    caractérisé en ce que
    dans la forme en coupe transversale de l'alésage de dosage (21), les côtés du triangle isocèle sont constitués selon un tracé convexe ou concave.
  4. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    le dosage s'opère par le / à l'intérieur du volume de dosage (21).
  5. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    la goutte (16) est constituée comme formation de forme au moins approximativement sphérique.
  6. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    la goutte (16), lors de son introduction dans l'enceinte de décharge (13), est conduite de façon à ce que des déflections ayant des angles égaux ou supérieurs à 90° soient évitées.
  7. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    des jonctions (17) sont constituées de façon à ce que des paliers ou arêtes soient évités dans le sens de l'introduction.
  8. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    le volume de dosage (21) présente une longueur qui équivaut sensiblement au diamètre d'un cercle inscrit dans la section transversale de l'alésage de dosage (21).
  9. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    une commutation entre l'étape préparatoire et l'étape de remplissage s'opère moyennant une unité à cuillère basculante (28) pouvant culbuter en cas de rotation du logement de lampe (11).
  10. Dispositif d'introduction d'une quantité exactement dosable de mercure dans l'enceinte de décharge (13) de lampes, en particulier dans des lampes fluorescentes droites, comprenant au moins un logement de lampe (11) auquel est raccordée l'enceinte de décharge (13),
    le logement de lampe (11) présentant un canal d'alimentation (19) qui communique avec l'intérieur de l'enceinte de décharge (13) et
    le dispositif comprenant une unité de dosage (15) qui prédose une quantité prédéfinie de mercure dans un volume de dosage (21) et transmet la quantité de mercure prédosée dans le volume de dosage (21) au canal d'alimentation (19) en vue de son introduction dans l'enceinte de décharge (13), le volume de dosage (21) étant dimensionné de façon que le mercure s'y constitue en une goutte (16) unique et l'unité de dosage (15) présentant un mécanisme de commutation (63) pour barrer et/ou dévier selon les besoins un flux de gaz s'écoulant par un canal de dérivation (64) contournant le volume de dosage (21), de façon que le flux de gaz, pendant le barrage du canal de dérivation (64), soit conduit par le volume de dosage (21) et entraîne la goutte dans l'enceinte de décharge (13), le volume de dosage (21) étant constitué comme alésage de dosage (21),
    caractérisé en ce que
    la forme en coupe transversale de l'alésage de dosage (21) est sensiblement constituée en triangle isocèle.
  11. Dispositif selon la revendication 10,
    caractérisé en ce que
    dans la forme en coupe transversale de l'alésage de dosage (21), les côtés du triangle isocèle sont disposés selon un tracé rectiligne.
  12. Dispositif selon la revendication 10,
    caractérisé en ce que
    dans la forme en coupe transversale de l'alésage de dosage (21), les côtés du triangle isocèle sont constitués selon un tracé convexe ou concave.
  13. Dispositif selon l'une des revendications 10 à 12,
    caractérisé en ce que
    le volume de dosage (21) présente une longueur qui équivaut sensiblement au diamètre d'un cercle inscrit dans la section transversale de l'alésage de dosage (21).
  14. Dispositif selon l'une des revendications 10 à 13,
    caractérisé en ce que
    un canal d'accélération (25) à tracé rectiligne ou curviligne est prévu entre le volume de dosage (21) et le canal d'alimentation (19) de façon que la goutte (16), compte tenu d'une utilisation de la force de gravitation, soit transférée dans le canal d'alimentation (19) par une impulsion supplémentaire liée à la gravitation.
  15. Dispositif selon la revendication 14,
    caractérisé en ce que
    le canal d'accélération (25) à tracé rectiligne ou curviligne débouche dans le canal d'alimentation (19) selon un angle < 90°, de préférence < 60°, et encore de préférence < 50°.
  16. Dispositif selon l'une des revendications 10 à 15,
    caractérisé en ce que
    le canal de dérivation (64) débouche dans le canal d'alimentation (19) et présente une ou plusieurs ouvertures d'admission (26) détournées de l'enceinte de décharge (13) en vue de l'alimentation de l'enceinte de décharge (13) en un flux de gaz, en particulier en gaz inerte de remplissage.
  17. Dispositif selon l'une des revendications 10 à 16,
    caractérisé en ce que
    au moins une et de préférence deux ou plusieurs ouvertures d'admission (26) sont disposées extra-axialement par rapport au canal d'alimentation (19) et peuvent s'obturer au moyen de capots (65, 66).
  18. Dispositif selon l'une des revendications 10 à 17,
    caractérisé en ce que
    l'unité de dosage (15) comprend une unité à cuillère basculante (28) qui est logée coaxialement au canal d'alimentation (19) et peut être basculée entre une position de dosage et une position de libération, le basculement s'opérant au moment de la rotation des logements de lampe (11) du fait que le centre de gravité de l'unité à cuillère basculante (28), de par sa configuration géométrique et/ou un poids de compensation supplémentaire (29), est situé nettement en dehors de l'axe de rotation de celle-ci autour du canal d'alimentation (19).
  19. Dispositif selon la revendication 18,
    caractérisé en ce que
    l'unité à cuillère basculante (28) comprend un bras de prélèvement (30) muni d'une cuillère (31) disposée à son extrémité et que, par rapport à l'extension radiale du bras de prélèvement (30) et y compris de la cuillère (31) en sens radial de l'axe de rotation défini par le canal d'alimentation (19), le centre de gravité est situé à une distance de cet axe de rotation qui correspond à environ 5 % à 25 % de l'extension radiale totale du bras de prélèvement (30) et y compris de la cuillère (31).
  20. Dispositif selon la revendication 18 ou 19,
    caractérisé en ce que
    l'unité à cuillère basculante (28) comprend un bras de prélèvement (30) muni d'une cuillère (31) disposée à son extrémité, la cuillère (31) comprenant, sur son côté détourné du bras de prélèvement (30), un toit (32) qui, s'effilant radialement vers l'extérieur, en particulier en un faîte ou une pointe, favorise un écoulement de mercure sur le côté radial extérieur de la cuillère (31).
  21. Dispositif selon l'une des revendications 10 à 20,
    caractérisé en ce que
    le canal d'alimentation (19) comprend une première section (33) située en amont et une seconde section (34) située en aval, qui sont alignées coaxialement l'une avec l'autre tout en étant logées de façon à pouvoir tourner en sens opposé l'une à l'autre autour de leur axe commun, la première section (33) s'engageant avec une surface conique (35) dans une ouverture (36) de la seconde section (34) qui se trouve en regard.
  22. Dispositif selon la revendication 21,
    caractérisé en ce que
    l'ouverture (36) de la seconde section (34) présente un élargissement (37) adapté à l'angle de la surface conique (35).
  23. Dispositif selon l'une des revendications 10 à 22,
    caractérisé en ce que
    le canal d'alimentation (19) comprend une première section (33) située en amont et une seconde section (34) située en aval, qui sont alignées coaxialement l'une avec l'autre tout en étant logées de façon à pouvoir tourner en sens opposé l'une à l'autre autour de l'axe commun, la première section (33) étant logée de façon mobile en rotation par rapport au logement de lampe (11) associé.
  24. Dispositif selon l'une des revendications 21 à 23,
    caractérisé en ce que
    la première section (33) du canal d'alimentation (19) est constituée dans une partie intérieure centrale (41) et logée de façon mobile en rotation dans une douille de dosage (38) fixe par rapport au logement de lampe (11) associé.
  25. Dispositif selon la revendication 24,
    caractérisé en ce que
    dans la partie intérieure centrale (41), le canal de dérivation (64) est en outre formé avec une ou plusieurs ouvertures d'admission (26).
  26. Dispositif selon l'une des revendications 24 ou 25,
    caractérisé en ce
    qu'il présente des capots (65, 66) pour obturer les ouvertures d'admission (26) qui sont constitués de manière immobiles par rapport à la douille de dosage (38) fixe, de préférence d'une pièce avec la douille de dosage (38).
  27. Dispositif selon l'une des revendications 24 à 26,
    caractérisé en ce que
    l'alésage de dosage (21) est constitué dans la douille de dosage (38).
  28. Dispositif selon la revendication 18 ou l'une des revendications 19 à 27 avec référence à la revendication 18,
    caractérisé en ce que
    l'unité à cuillère basculante (28) présente un alésage de passage de gaz (39) qui, en position de libération de l'unité à cuillère basculante (28), est en alignement avec l'alésage de dosage (21) de sorte que la pression du gaz de remplissage qui s'exerce sur l'alésage de passage de gaz (39) provoque ou assiste le transport de la goutte (16) dans le canal d'alimentation (19).
  29. Dispositif selon l'une la revendication 28,
    caractérisé en ce que
    l'alésage de passage de gaz (39) présente des moyens de déflection (40), en particulier une douille déflectrice, pour tenir à l'écart de l'alésage de passage de gaz (39) le mercure excédentaire s'écoulant de l'unité de dosage (15) lors de l'opération de dosage respective.
EP06007445A 2006-04-07 2006-04-07 Méthode et dispositif pour doser une quantité de mercure exactement contrôlable dans une lampe à décharge Not-in-force EP1843380B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP06007445A EP1843380B1 (fr) 2006-04-07 2006-04-07 Méthode et dispositif pour doser une quantité de mercure exactement contrôlable dans une lampe à décharge
AT06007445T ATE424620T1 (de) 2006-04-07 2006-04-07 Verfahren und vorrichtung zum einbringen einer genau dosierbaren menge quecksilber in eine entladungslampe
DE502006003007T DE502006003007D1 (de) 2006-04-07 2006-04-07 Verfahren und Vorrichtung zum Einbringen einer genau dosierbaren Menge Quecksilber in eine Entladungslampe
DE200620020463 DE202006020463U1 (de) 2006-04-07 2006-04-07 Einrichtung zum Einbringen einer genau dosierbaren Menge an Quecksilber
EP08100654A EP1912242A3 (fr) 2006-04-07 2006-04-07 Procédé et dispositif destinés à l'introduction d'une quantité précise mesurable de mercure dans une lampe à décharge
US11/783,194 US7695336B2 (en) 2006-04-07 2007-04-06 Device for introducing an accurately dosable amount of mercury.
US12/656,973 US20100159791A1 (en) 2006-04-07 2010-02-22 Method for introducing an accurately dosable amount of mercury

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06007445A EP1843380B1 (fr) 2006-04-07 2006-04-07 Méthode et dispositif pour doser une quantité de mercure exactement contrôlable dans une lampe à décharge

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP08100654A Division EP1912242A3 (fr) 2006-04-07 2006-04-07 Procédé et dispositif destinés à l'introduction d'une quantité précise mesurable de mercure dans une lampe à décharge

Publications (2)

Publication Number Publication Date
EP1843380A1 EP1843380A1 (fr) 2007-10-10
EP1843380B1 true EP1843380B1 (fr) 2009-03-04

Family

ID=36674966

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06007445A Not-in-force EP1843380B1 (fr) 2006-04-07 2006-04-07 Méthode et dispositif pour doser une quantité de mercure exactement contrôlable dans une lampe à décharge
EP08100654A Withdrawn EP1912242A3 (fr) 2006-04-07 2006-04-07 Procédé et dispositif destinés à l'introduction d'une quantité précise mesurable de mercure dans une lampe à décharge

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08100654A Withdrawn EP1912242A3 (fr) 2006-04-07 2006-04-07 Procédé et dispositif destinés à l'introduction d'une quantité précise mesurable de mercure dans une lampe à décharge

Country Status (4)

Country Link
US (2) US7695336B2 (fr)
EP (2) EP1843380B1 (fr)
AT (1) ATE424620T1 (fr)
DE (1) DE502006003007D1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433177A (en) * 1944-02-10 1947-12-23 Westinghouse Electric Corp Method and apparatus for introducing mercury into a discharge device by means of a capillary tube and a by-pass connection
US2391573A (en) * 1944-03-07 1945-12-25 Herzog Carl Method of and apparatus for making cold cathode fluorescent lamps or the like
US2726799A (en) 1953-03-23 1955-12-13 Sylvania Electric Prod Apparatus for exhausting electric discharge devices
US2699279A (en) 1953-07-14 1955-01-11 Sylvania Electric Prod Mercury dispenser
US2842290A (en) 1955-12-19 1958-07-08 Sylvania Electric Prod Mercury dispenser
JPS5543729A (en) 1978-09-22 1980-03-27 Hitachi Ltd Mercury head
JPS6028098B2 (ja) * 1978-12-30 1985-07-03 松下電工株式会社 放電ランプの水銀封入方法
IT1277239B1 (it) 1995-11-23 1997-11-05 Getters Spa Dispositivo per l'emissione di mercurio,l'assorbimento di gas reattivi e la schermatura dell'elettrodo all'interno di lampade

Also Published As

Publication number Publication date
DE502006003007D1 (de) 2009-04-16
ATE424620T1 (de) 2009-03-15
EP1912242A2 (fr) 2008-04-16
US20070281572A1 (en) 2007-12-06
US7695336B2 (en) 2010-04-13
US20100159791A1 (en) 2010-06-24
EP1912242A3 (fr) 2008-08-27
EP1843380A1 (fr) 2007-10-10

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