US1930132A - Gaseous electric discharge device - Google Patents

Gaseous electric discharge device Download PDF

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Publication number
US1930132A
US1930132A US502741A US50274130A US1930132A US 1930132 A US1930132 A US 1930132A US 502741 A US502741 A US 502741A US 50274130 A US50274130 A US 50274130A US 1930132 A US1930132 A US 1930132A
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US
United States
Prior art keywords
container
electrode chambers
electric discharge
discharge device
electrodes
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.)
Expired - Lifetime
Application number
US502741A
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English (en)
Inventor
Reger Martin
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.)
General Electric Co
Original Assignee
General Electric Co
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
Application filed by General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US1930132A publication Critical patent/US1930132A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01J61/523—Heating or cooling particular parts of the lamp

Definitions

  • the present invention relates generally to gaseous electric discharge devices and more particularly the invention relates to such devices in which a metal vapor is used as the gas'eouscon- 5 tent, or as a component of the gaseous content.
  • metal vapors used in the conducting atmosphere of gaseous electric discharge devices condense very readily, this being especially true of those metal vapors whose natural state at normal temperatures is a solid such as, for example, sodium vapor. It is equally well known in the art that such condensation of metal vapor takes place in the electrode chambers since these are the coolest parts of such devices during operation thereof.
  • the object of this invention is to avoid condensation of metal vapor in the electrode chambers of such gaseous electric discharge devices during the operation of said devices.
  • the invention attains its object by maintaining those parts of the discharge container surrounding the positive column of the device and being adjacent the electrode chambers at .a higher temperature than the remainder of said container and said electrode chambers.
  • This heated passage adjacent the electrode chambers warms the gaseous filling at that part and in the electrode chambers and thus prevents the disadvantageous and disastrous condensation of the metal vapor in the electrode chambers as well as avoiding deleterious change of temperature and pressure of other discharge conducting gases present such as neon, argon, etc.
  • three embodiments of the invention are shown inwhich,
  • Fig. 1 is a side elevational view of a gaseous electric discharge device illustrating one embodiment of the invention.
  • Fig. 2 is a side elevation view partly in section of one end of a gaseous electric discharge device illustrating another embodiment of the between the container a said metal vapor being a solid at normal temperatures such as, for example, sodium.
  • a said metal vapor being a solid at normal temperatures such as, for example, sodium.
  • Any suitable electrodes may be used, the electron emitting hot electrodes of sintered oxides and metal, shown at c, being especially suitable, andsaid electrodes are provided with a heating element, if that well known method of starting is desired.
  • Constricted parts "e are provided surrounding the positive column and the electrode chambers b Said constricted parts e being of smaller diameter than the other portions of container a, are heated more by the passage of the discharge therethrough and affect a greater heating of the gaseous atmosphere to prevent condensation of the vapor thereof in the electrode chambers b during the operation of the device.
  • a heat insulation material I which may be, for example, of asbestos wrapped around said part "e in several thicknesses so that there is less heat radiation from said part 8 than from the container a or the electrode chambers (11)).
  • any suitable heating or heat absorption means may be used such as a metal ring fused into and surrounding the part e, or a thick hollow ring of heat absorbing glass filled with heat absorbs ing gas may be fused to said part e, or said part e may be constricted by various means as by a disk or hollow plug, or any combination of the above may be used to maintain part e at a higher temperature than the container a. and the electrode chambersfb.
  • any part of the tube caused by cold drafts of air in the room in which the tube is operating; for example, the effect of such a draft on any part of the tube being promptly overcome by a rise in temperature of the gas in the tube to compensate for the drop in temperature on the part of the container affected by the draft to maintain stable operation of the lamp until the normal conditions of operation are resumed.
  • This is particularly important in the case of sodium lamps, or those metals which are solid at normal temperatures, and results in keeping the metal vapor at all parts of the container under definite control which has not been the case with prior attempts to produce lamps having a vapor filling such as sodium.
  • a container In an electric discharge device, a container, electrodes sealed therein, a gas filling therein of' a metal solid at normal temperatures, electrode chambers for said electrodes, the parts of saiducontainer adjacent said electrode chambers being constricted to maintain a higher temperature thereat than at other parts of said container and said electrode chambers during the operation of said device to keep the gaseous filling in all parts of said device at desired temperature.
  • a container In an electric discharge device, a container, electrodes sealed therein, a gas filling therein comprising a vapor of a metal solid at normal temperatures, electrode chambers for said electrodes, the parts of said container adjacent said electrode chambers being constricted to maintain a higher temperature thereat than at other parts of said container and said electrode chambers during the operation of said device to keep the metalgas filling at a non-condensing temperature.
  • a container having electrodes sealed therein, a gas filling therein comprising a mixture of a vapor of a metal solid at normal temperatures and a gas, electrode chambers for said electrodes, and means for maintaining the parts of said container adJacent said electrode chambers at a higher temperature than 0 er parts of said container and said electrode bers during the operation of said device to keep the metal gas filling at a non-condensing temperature.
  • a container adapted for operation on direct'current, a container, electrodes sealed therein, a gas filling therein comprising a gas mixture, electrode chambers for said electrodes, the part of said container adja- 5 cent one of said electrode chambers being at a higher temperature than other parts of said container and said electrode chambers during the operation of said device.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)
US502741A 1930-01-12 1930-12-16 Gaseous electric discharge device Expired - Lifetime US1930132A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE518948T 1930-01-12

Publications (1)

Publication Number Publication Date
US1930132A true US1930132A (en) 1933-10-10

Family

ID=34085408

Family Applications (1)

Application Number Title Priority Date Filing Date
US502741A Expired - Lifetime US1930132A (en) 1930-01-12 1930-12-16 Gaseous electric discharge device

Country Status (7)

Country Link
US (1) US1930132A (en(2012))
AT (1) AT124034B (en(2012))
CH (1) CH148905A (en(2012))
DE (1) DE518948C (en(2012))
FR (1) FR703530A (en(2012))
GB (1) GB363092A (en(2012))
NL (1) NL33743C (en(2012))

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621296A (en) * 1944-09-02 1952-12-09 Robert W Thompson Ion source
US3482141A (en) * 1967-12-07 1969-12-02 Henry Greber Gas discharge lamp with a movable baffle adjacent one electrode
US3531687A (en) * 1968-10-17 1970-09-29 Henry Greber Gas discharge tube with a movable baffle between the electrodes
US4278910A (en) * 1979-08-06 1981-07-14 Gte Products Corporation High pressure arc discharge lamp having concave shaped outer jacket
US4508993A (en) * 1981-11-25 1985-04-02 General Electric Company Fluorescent lamp without ballast
US20080054812A1 (en) * 2006-08-29 2008-03-06 Osram Sylvania Inc. Arc discharge vessel having arc centering structure and lamp containing same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB835183A (en) * 1957-05-07 1960-05-18 Philips Electrical Ind Ltd Improvements in or relating to low-pressure mercury vapour discharge tubes

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621296A (en) * 1944-09-02 1952-12-09 Robert W Thompson Ion source
US3482141A (en) * 1967-12-07 1969-12-02 Henry Greber Gas discharge lamp with a movable baffle adjacent one electrode
US3531687A (en) * 1968-10-17 1970-09-29 Henry Greber Gas discharge tube with a movable baffle between the electrodes
US4278910A (en) * 1979-08-06 1981-07-14 Gte Products Corporation High pressure arc discharge lamp having concave shaped outer jacket
US4508993A (en) * 1981-11-25 1985-04-02 General Electric Company Fluorescent lamp without ballast
US20080054812A1 (en) * 2006-08-29 2008-03-06 Osram Sylvania Inc. Arc discharge vessel having arc centering structure and lamp containing same
US7619350B2 (en) * 2006-08-29 2009-11-17 Osram Sylvania Inc. Arc discharge vessel having arc centering structure and lamp containing same

Also Published As

Publication number Publication date
AT124034B (de) 1931-08-10
DE518948C (de) 1931-02-21
NL33743C (en(2012))
GB363092A (en) 1931-12-17
FR703530A (fr) 1931-05-01
CH148905A (de) 1931-08-15

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