AT105060B - Electric tube. - Google Patents
Electric tube.Info
- Publication number
- AT105060B AT105060B AT105060DA AT105060B AT 105060 B AT105060 B AT 105060B AT 105060D A AT105060D A AT 105060DA AT 105060 B AT105060 B AT 105060B
- Authority
- AT
- Austria
- Prior art keywords
- tube
- carbonic acid
- gas
- carbonate
- electric tube
- Prior art date
Links
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 5
- 239000001095 magnesium carbonate Substances 0.000 claims description 5
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 5
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 9
- 239000000126 substance Substances 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000002274 desiccant Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 2
- ZBUQRSWEONVBES-UHFFFAOYSA-L beryllium carbonate Chemical compound [Be+2].[O-]C([O-])=O ZBUQRSWEONVBES-UHFFFAOYSA-L 0.000 description 2
- 229910000023 beryllium carbonate Inorganic materials 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000010459 dolomite Substances 0.000 description 2
- 229910000514 dolomite Inorganic materials 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
- H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
- H01K1/56—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering characterised by the material of the getter
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Luminescent Compositions (AREA)
- Laminated Bodies (AREA)
- Insulated Conductors (AREA)
Description
<Desc/Clms Page number 1>
Elektrische Leuchtröhre.
EMI1.1
einer tageslichtartigen Wirkung mit Kohlensäure gefüllt sind. Um bei derartigen Röhren das durch den sehnellen Verbrauch der Gasfüllung bedingte Hartwerden zu vermeiden, wird meist mittels eines besonderen angebauten Speiseventils fortgesetzt Kohlensäure nachgeliefert. Vorgeschlagen wurde auch schon die Gas- bzw. Kohlensäurenachliefenmg mittels in die Röhre oder in Hohlräumen der Elektroden eingebrachten Bikarbonats zu bewirken, das, sobald der Druck in der Röhre sinkt, durch die dann steigende Stromstärke und Temperatur unter Freigabe von Kohlensäure zersetzt wird.
Ein Nachteil bei dieser Art von Gaslieferung liegt jedoch darin, dass bei der Zersetzung des Bikarbonats nicht nur Kohlensäure, sondern auch Wasserdampf frei wird, der sowohl die Ökonomie der Röhre verschlechtert als auch die Farbe des ausgestrahlten Lichtes nachteilig verändert. Zur Vermeidung dieses Übelstandes war man daher, sofern Bikarbonat in die Rohre eingebracht wurde, stets gezwungen, noch ausser diesem geeignete Trockenmittel, wie beispielsweise Bariumoxyd und Kalziumchlorid in die Röhre einzubringen, die die Feuchtigkeit bzw. den Wasserdampf binden. Notwendig war diese zusätzliche Einbringung von Trockenmitteln zudem auch noch insbesondere deswegen, da beim Einschalten der Röhre die Gegenwart von Wasserdampf die Rückbildung des Bikarbonats unter Kohlensäureverminderung begünstigen würde.
EMI1.2
DieErfindung macht es sich nun zur Aufgabe, die Gas-bzw. Kohlensäurensehlieferung in einfacherer Weise, nämlich ohne Verwendung zusätzlicher Trockenmittel zu bewirken, wobei dennoch gleichfalls die Gewähr dafür gegeben ist, dass die Röhre jederzeit leicht von neuem zum Zünden gebracht werden kann. Erfindungsgemäss wird zu diesem Zweck vornehmlich von Magnesiumkarbonat als gasnaehliefernde Substanz Gebrauch gemacht, das dabei in an sich bekannter Weise in der Röhre an beliebiger Stelle, zweckmässig jedoch, wie ebenfalls schon vorgeschlagen wurde, auf den Elektroden oder in Hohlräumen derselben angebracht wird. Das Magnesiumkarbonat spaltet sich bei anwachsender Stromstärke und Temperatur in Kohlensäure und Magnesiumoxyd, die sich bei gewöhnlicher Temperatur nicht wieder vereinigen.
Während die freiwerdende Kohlensäure den Kohlensäuregehalt der Röhre ergänzt, bildet das Magnesiumoxyd eine vollkommen indifferent, die Entladung in keiner Weise beeinflussende trockene Substanz.
EMI1.3
druck von gleicher Grössenordnung besitzende verwandte Karbonate, wie Berylliumkarbonat, Kalziumkarbonat, Dolomit Anwendung finden. Auch Mischungen oder Verbindungen von Magnesiumkarbonat mit derartigen verwandten Karbonaten können als gasnachliefernde Substanzen in die Röhre eingebracht werden.
PATENT-ANSPRUCHE :
1. Elektrische Leuchtröhre mit Kohlensäurefüllung und beim Betriebe gasnaehliefernder Substanz, die in der Röhre, u. zw. zweckmässig auf der Elektrode oder in Hohlräumen derselben angebracht ist, dadurch gekennzeichnet, dass die gasnachliefernde Substanz aus Magnesiumkarbonat oder aus einem bei gleicher Temperatur einen Zersetzungsdruck von gleicher Grössenordnung aufweisenden, verwandten Karbonat, wie Beryllium-, Kalziumkarbonat, Dolomit besteht.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Electric tube.
EMI1.1
a daylight-like effect are filled with carbonic acid. In order to avoid the hardening caused by the excessive consumption of the gas filling in such tubes, carbonic acid is usually continuously supplied by means of a special attached feed valve. It has also been suggested that the gas or carbonic acid replenishment be effected by means of bicarbonate introduced into the tube or in the cavities of the electrodes, which, as soon as the pressure in the tube falls, is decomposed by the then increasing current strength and temperature with the release of carbonic acid.
A disadvantage of this type of gas delivery is that, when the bicarbonate decomposes, not only carbonic acid but also water vapor is released, which both worsens the economy of the tube and adversely affects the color of the light emitted. In order to avoid this inconvenience, if bicarbonate was introduced into the pipes, it was always necessary to introduce suitable desiccants, such as barium oxide and calcium chloride, into the pipe, which bind the moisture or water vapor. This additional introduction of desiccants was also necessary in particular because when the tube was switched on, the presence of water vapor would promote the reformation of the bicarbonate with a reduction in carbonic acid.
EMI1.2
The invention now makes it its task, the gas or. Carbon dioxide delivery in a simpler way, namely to bring about without the use of additional desiccants, with the guarantee that the tube can easily be re-ignited at any time. According to the invention, magnesium carbonate is primarily used as a gas-supplying substance for this purpose, which is attached in a manner known per se at any point in the tube, but expediently, as has also already been proposed, on the electrodes or in cavities thereof. With increasing current strength and temperature, the magnesium carbonate splits into carbonic acid and magnesium oxide, which do not reunite at normal temperature.
While the released carbonic acid supplements the carbonic acid content of the tube, the magnesium oxide forms a completely indifferent dry substance which in no way influences the discharge.
EMI1.3
Related carbonates, such as beryllium carbonate, calcium carbonate, dolomite, which have pressure of the same order of magnitude are used. Mixtures or compounds of magnesium carbonate with related carbonates of this type can also be introduced into the tube as substances that supply gas.
PATENT CLAIMS:
1. Electric fluorescent tube with carbon dioxide filling and when operating gas near-delivering substance, which in the tube, u. is expediently attached to the electrode or in cavities thereof, characterized in that the substance supplying gas consists of magnesium carbonate or a related carbonate, such as beryllium carbonate, calcium carbonate, dolomite, which has a decomposition pressure of the same order of magnitude at the same temperature.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP49698D DE432880C (en) | 1925-02-04 | 1925-02-04 | Process for simultaneous residual venting of a large number of electric light bulbs and other vacuum vessels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT105060B true AT105060B (en) | 1926-12-27 |
Family
ID=7383928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT105060D AT105060B (en) | 1925-02-04 | 1926-01-28 | Electric tube. |
Country Status (3)
| Country | Link |
|---|---|
| AT (1) | AT105060B (en) |
| CH (1) | CH119073A (en) |
| DE (1) | DE432880C (en) |
-
1925
- 1925-02-04 DE DEP49698D patent/DE432880C/en not_active Expired
-
1926
- 1926-01-28 AT AT105060D patent/AT105060B/en active
- 1926-02-03 CH CH119073D patent/CH119073A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH119073A (en) | 1927-02-16 |
| DE432880C (en) | 1926-08-16 |
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