US2329584A - Temperature regulation system for electric discharge devices - Google Patents

Temperature regulation system for electric discharge devices Download PDF

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Publication number
US2329584A
US2329584A US376242A US37624241A US2329584A US 2329584 A US2329584 A US 2329584A US 376242 A US376242 A US 376242A US 37624241 A US37624241 A US 37624241A US 2329584 A US2329584 A US 2329584A
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United States
Prior art keywords
lamp
cooling
temperature
heating means
operating temperature
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Expired - Lifetime
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US376242A
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English (en)
Inventor
Bourne Harry Kebbell
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General Electric Co
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General Electric Co
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Filing date
Publication date
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Publication of US2329584A publication Critical patent/US2329584A/en
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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
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space

Definitions

  • My invention relates to thetemp rature regulation of electric discharge devices and more particularly to the temperature regulation of discharge lamps of the: highrpressure metal vapor type. V.
  • the current carrying capacity of. an electric discharge lamp of the high pressure metal vapor type is limited by the.v operating temperature of the lamp envelope.” Ifthe temperature is too high it will cause deterioration of the refractory material of the bulb. If, howevenxthe lamp is cooled by means of a blast of air or. other cooling medium the temperature is lowered and consequently the capacity may be increased very considerably. -It'is possible by this means to make such lamps operate .at very high wattages without a large increase in the size of the bulb.
  • I provide auxiliary heating means, an auxiliary directive cooling means and an auxiliary starting device. These and the main cooling means are operated in a predetermined sequence. A further cooling means may be employed, the function of which is to cool the'seals. Bythis. means very large the cold lamp with the auxiliary heater switched lows: On switching on fi'om'cold'it is necessary to reachthe desired operating temperature as quickly as possible. This is done by running on and the cooling airturned oil. When the lamp has reached a certain temperature, the
  • a directive cooling means comes into-operation, and this causes the mercury tocondense rapidly; at a point on the lamp bulbr-at which it can receive heat rapid.
  • the pressure'inv the lamp currents may be carried through the seals wherebylamps of very'high 'wattagemay be made more easily.
  • Theuc orrect':sequence:Iotloperating is as folfalls rapidly; andwhen it is sufilciently-low the lamp will restrike whereupon the cooling means arefturned-ofiand the'heater is again switched on. The lamp then runsup rapidly to the value of the wattageat which the heater is switched off and the cooling blast is turned on.
  • Fig.1 is a diagrammaticrepresentation of the'heating and cooling; meansofthe present invention; Fig. 2
  • Fig. 3 a modified form of the: lamp of Fig.- 1.
  • a high pressure mercury vapor projection lamp l is mounted in such to condense the-mercury rapidly'when it is required to restrike the arc in the hot lamp.
  • a Tesla coil, 6 is connected to an auxiliary electrode in the lamp in order to reduce stillfurtherthe striking time.
  • a relay 9 operated by thermostat I0 adjacent the lamp envelope maybe arranged to deenerg-ize heater 4 and initiate operation'of mai-n' air blast I at any desiredlamp temperature, preferabl-y however at a temperature slightly below normal operatingtemperature:- -A relay t3 re sponsi-ve to the high voltage existing across the; lamp when it is out mayprevent 'thedeenergizing of air blast 2 and energization of heater 4 byrelay 9 un'ti-lthe-lamp-has restarted, after havingbeen deenergized 'while'
  • a rel-ayconnected across the lamp and responsiveto a voltage slightly lower than normal operatingvoltage may operate-t0 deer;- ergize the heater and turn on themai n cooling blast as thelamp approaches operating temperatime during the starting process.
  • Another relay I22 responsivetotl'iehigher voltage existing across the lamp when; it is out, may-beused -to start up the Tesla coil and to'turn on the auxiliary air blast forcooli-ng thel'amp rapid-1y in the event At the, same time the Tesla coil 6 is switched on and after a of an" interruptionin thepower supply. Whe'n the voltage across the lamp will then become very low.
  • the jet-used tor'the ai r tor coolinga spot on the bulb to condense the mercury should be adjust'edtc condense the mercury as rapidly as-possible, and also the position of thisj'et should be such that the m rcury is condensed-ma position on the'bulb in which itwiili receive heat. from the, auxiliary heater as quickly as possible. By this means. the time of'restrikingaand the heatin up time-willboth be reduced;
  • FIG. 3 Another form oif lamp in which improveditimes for running up; and'for'restriking n'aaybe obtained is shown in Fig. 3.
  • the lamp I has on it an appendix M which contains the mercury.
  • a heater 4 which may be arranged to be in close contact with its surface, thus ensuring eflicient heat transference.
  • this appendix may be cooled by an air jet 5 very e'fiicierttly, and by this the delay times for the lamp may be reduced even further.
  • cooling and heating means of my into provide a minimum interference with the emitted light of the lamp.
  • the cooling or heating means or both directly between the rear of the lamp and the center of the mirror since light reflected from this portion usually returns to the lamp only to be intercepted by the lamp envelopeand is, therefore, already useless illumination purposes.
  • the cooling pipes may be -shapeci with flattened cylindrical or elliptical cross-section and so oriented that. minimum interference with the light results.
  • the supply pipes carrying the cooling fluid may be positioned either vertically in front oi or'behinditheenvelope and may terminate ina nozzle having anaxis at right angles. .to. the. axisToi' tl ie' pipe...
  • the nozzle may have an outwardly flared. orifice directed toward the lamp envelope.”
  • the vertical portion of the pipe may be of elliptical cross-.sectiontwi-th the major axis of the ellipse directed F's-long the axis of the beamso thatftline; ipipef'ohstructs as little as possible the effectice11ight.
  • a, high pressure vapor electrical discharge device comprising electrodes for sustaining a discharge and. energizing means therefor, cooling: means, heating, means, independent of said electrodes; :for accelerating. the approach of said discharge device to normal opera-tins temperature.
  • said heating means being energized upon starting of the device, means for deenerg-izing said heating means shortly before said, device reaches normal operating temperature and for therealfter maintarining said heating means-deenergized during operation of the device, and means for initiating the operation of said cooling means onlywhen said device approaches normal operating temperature.
  • cooling means for accelerating the approach of said device to normal operating temperature, said heating means being energized upon starting of the device, cooling means, means I for deenergizing said heating means shortly before said device reaches its approximate normal operating temperature and for thereafter main tion obtains, and means for deenergizing said cooling means when said device drops to a temperature permitting reenergization of said device.
  • cooling means being arranged to cool the same local portion of the device as is heated by said heating means.
  • said device after normal operation obtains and t for deenergizing said auxiliary cooling means when the temperature of saiddevice drops sufficiently to permit reenergization thereof, and means for deenergizing said primary cooling means until said device has reattained-approximate normal operating temperature.
  • said heating means being energized upon startingof the device, air blasts comprising a primary cooling means and an auxiliary cooling means in close proximity to said heating means, means for deenergizing said heating means shortly before said device reaches normal operating temperature and for initiating the operation of said primary cooling means thereafter throughout normal operation of the device, means for initiating the operation of said auxiliary cooling means only upon deenergization of said device after normal operation obtains and for deenergizing said auxiliary cooling means when the temperature of said device drops sufficiently to permit reenergization thereof, and means for deenergizing said primary cooling mean-s until said-device has reattained approximate normal operating temperature.
  • the method of accelerating the restarting of a high pressure vapor electrical discharge device upon deenergization thereof after normal operation obtains which comprises applying additional cooling means thereto in addition to the normal cooling means until the temperature of said device drops suificiently to permit reenergization thereof and thereafter discontinuing the normal cooling means until normal operation reobtains.
  • plying cooling means at a point in close proximity to the point of application of said heat when said device is deenergized after normal op 'eration obtains untilthe temperature of said device drops sufliciently to permit reenergization thereof.
  • the method of operating a high pressure vapor electrical discharge device which comprises supplying electrical energy to the device to initiate a discharge therein, simultaneously applying heat thereto in addition to that supplied by the discharge until the device approaches its normal operating temperature and applying to said device when said device is deenergized after normal operation obtains cooling means in addition to the normal cooling means until the temperature of said device drops sufficien-tly to permit reenergization thereof.

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  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
US376242A 1940-02-17 1941-01-27 Temperature regulation system for electric discharge devices Expired - Lifetime US2329584A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3051/40A GB539382A (en) 1940-02-17 1940-02-17 Improvements relating to the operation of electric discharge lamps

Publications (1)

Publication Number Publication Date
US2329584A true US2329584A (en) 1943-09-14

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ID=9751033

Family Applications (1)

Application Number Title Priority Date Filing Date
US376242A Expired - Lifetime US2329584A (en) 1940-02-17 1941-01-27 Temperature regulation system for electric discharge devices

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US (1) US2329584A (fr)
FR (1) FR870111A (fr)
GB (1) GB539382A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267322A (en) * 1961-02-23 1966-08-16 Varian Associates Frequency stable temperature compensated electron tube
US3295406A (en) * 1963-02-21 1967-01-03 Genevieve I Magnuson Color grading apparatus
US3560787A (en) * 1967-08-21 1971-02-02 Clay Burton Flash lamp
FR2435918A1 (fr) * 1978-06-07 1980-04-11 Bbc Brown Boveri & Cie Dispositif en vue de steriliser des liquides
US4899085A (en) * 1985-10-28 1990-02-06 Kabushiki Kaisha Toshiba Igniting device for a high-pressure discharge lamp capable of battery voltage compensation
WO2005104183A2 (fr) 2004-04-21 2005-11-03 Philips Intellectual Property & Standards Gmbh Unite d'eclairage

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267322A (en) * 1961-02-23 1966-08-16 Varian Associates Frequency stable temperature compensated electron tube
US3295406A (en) * 1963-02-21 1967-01-03 Genevieve I Magnuson Color grading apparatus
US3560787A (en) * 1967-08-21 1971-02-02 Clay Burton Flash lamp
FR2435918A1 (fr) * 1978-06-07 1980-04-11 Bbc Brown Boveri & Cie Dispositif en vue de steriliser des liquides
US4899085A (en) * 1985-10-28 1990-02-06 Kabushiki Kaisha Toshiba Igniting device for a high-pressure discharge lamp capable of battery voltage compensation
WO2005104183A2 (fr) 2004-04-21 2005-11-03 Philips Intellectual Property & Standards Gmbh Unite d'eclairage
WO2005104183A3 (fr) * 2004-04-21 2009-03-19 Philips Intellectual Property Unite d'eclairage
US20090224675A1 (en) * 2004-04-21 2009-09-10 Pavel Pekarski Lighting unit
CN101421819B (zh) * 2004-04-21 2010-06-16 皇家飞利浦电子股份有限公司 照明装置

Also Published As

Publication number Publication date
FR870111A (fr) 1942-03-03
GB539382A (en) 1941-09-08

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