GB538533A - Improvements in or relating to artificially-cooled high-pressure mercury-vapour discharge tubes - Google Patents
Improvements in or relating to artificially-cooled high-pressure mercury-vapour discharge tubesInfo
- Publication number
- GB538533A GB538533A GB6569/40A GB656940A GB538533A GB 538533 A GB538533 A GB 538533A GB 6569/40 A GB6569/40 A GB 6569/40A GB 656940 A GB656940 A GB 656940A GB 538533 A GB538533 A GB 538533A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- tube
- cooling medium
- diameter
- discharge tubes
- 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
Links
- 239000002826 coolant Substances 0.000 abstract 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 2
- 229910052721 tungsten Inorganic materials 0.000 abstract 2
- 239000010937 tungsten Substances 0.000 abstract 2
- 230000003213 activating effect Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
- H01J61/822—High-pressure mercury lamps
Landscapes
- Discharge Lamp (AREA)
- Lasers (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Discharge Heating (AREA)
Abstract
538,533. Metal-vapour apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. April 11, 1940, No. 6569. Convention date, April 14, 1939. Addition to 484,143. [Class 39 (i)] In artificially cooled high-pressure metal vapour discharge tubes as described in the parent Specification, the anode 4 is formed as a hollow body through which a cooling medium is passed to adapt the tube for heavy currents without unduly enlarging the cross-section of the anode, which may be less than 10 times that of the cathode. In the form shown, the cathode 2 is of tungsten with a diameter 1.5 m.m. and may be coated with activating oxides. The anode is a tungsten tube 4 m.m. in diameter with a wall thickness of .8 m.m., and closed at the inner end with a wall 1.5 m.m. thick. The distance between the electrodes is 20 m.m. Cooling medium is led to the interior of the anode by a tube 8 and passes away by apertures 11 in a tubular sleeve 10 connecting the open end of the anode with an enlarged part of the tube 8. The envelope has an internal and external diameter of 6 and 9 m.m. respectively, and is enclosed in the cooling jacket 12 with inlet 17 and outlet 16 for the cooling medium. The electrodes project a distance about 1 m.m. from a surrounding quantity of mercury, which is regulable in manufacture by adjusting the length of the side tube 7.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEN40093D DE716566C (en) | 1936-11-28 | 1936-11-28 | In particular, artificially cooled high pressure mercury vapor discharge tubes used to emit radiation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB538533A true GB538533A (en) | 1941-08-07 |
Family
ID=25944450
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32407/37A Expired GB484143A (en) | 1936-11-28 | 1937-11-24 | Improvements in or relating to artificially cooled high-pressure mercury-vapour discharge tubes |
| GB6569/40A Expired GB538533A (en) | 1936-11-28 | 1940-04-11 | Improvements in or relating to artificially-cooled high-pressure mercury-vapour discharge tubes |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32407/37A Expired GB484143A (en) | 1936-11-28 | 1937-11-24 | Improvements in or relating to artificially cooled high-pressure mercury-vapour discharge tubes |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US2152987A (en) |
| DE (1) | DE716566C (en) |
| FR (2) | FR829884A (en) |
| GB (2) | GB484143A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2528969A (en) * | 1945-03-07 | 1950-11-07 | Michael Reese Res Foundation | Lamp |
| US2467687A (en) * | 1946-07-08 | 1949-04-19 | Gen Electric | High-pressure discharge lamp |
| US2682006A (en) * | 1950-03-22 | 1954-06-22 | Scopicon Inc | Means for preventing external coating of water-cooled electric lamps |
| US2673940A (en) * | 1951-04-28 | 1954-03-30 | Gen Aniline & Film Corp | Process and means for preventing film deposits in lamps |
| US3597650A (en) * | 1969-09-23 | 1971-08-03 | Union Carbide Corp | Arc radiation sources |
-
1936
- 1936-11-28 DE DEN40093D patent/DE716566C/en not_active Expired
-
1937
- 1937-11-16 US US174848A patent/US2152987A/en not_active Expired - Lifetime
- 1937-11-24 GB GB32407/37A patent/GB484143A/en not_active Expired
- 1937-11-25 FR FR829884D patent/FR829884A/en not_active Expired
-
1940
- 1940-04-11 GB GB6569/40A patent/GB538533A/en not_active Expired
- 1940-04-12 FR FR51111D patent/FR51111E/en not_active Expired
- 1940-05-06 US US333654A patent/US2245406A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB484143A (en) | 1938-05-02 |
| FR51111E (en) | 1941-08-08 |
| FR829884A (en) | 1938-07-08 |
| US2152987A (en) | 1939-04-04 |
| US2245406A (en) | 1941-06-10 |
| DE716566C (en) | 1942-02-02 |
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