DE765865C - Method for improving the insulation resistance of electrical heating elements provided with organic insulating means - Google Patents
Method for improving the insulation resistance of electrical heating elements provided with organic insulating meansInfo
- Publication number
- DE765865C DE765865C DES146453D DES0146453D DE765865C DE 765865 C DE765865 C DE 765865C DE S146453 D DES146453 D DE S146453D DE S0146453 D DES0146453 D DE S0146453D DE 765865 C DE765865 C DE 765865C
- Authority
- DE
- Germany
- Prior art keywords
- improving
- heating elements
- electrical heating
- insulation resistance
- elements provided
- 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
- 238000009413 insulation Methods 0.000 title claims description 5
- 238000010438 heat treatment Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 239000000470 constituent Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000004343 Calcium peroxide Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- LHJQIRIGXXHNLA-UHFFFAOYSA-N calcium peroxide Chemical compound [Ca+2].[O-][O-] LHJQIRIGXXHNLA-UHFFFAOYSA-N 0.000 description 1
- 235000019402 calcium peroxide Nutrition 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/18—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being embedded in an insulating material
Landscapes
- Resistance Heating (AREA)
Description
Verfahren zum Verbessern des Isolationswiderstandes von mit organischen Isoliermitteln versehenen elektrischen Heizkörpern Die Heizleiter von elektrischen Heizkörpern, so z. B. von Kochplatten, sind fast allgemein in eine Einbettmasse-aus anorganischen Stoffen eingebettet. Bei der Aufbereitung, der Lagerung und der Vorbereitung bzw. der Verarbeitung dieser Isoliermasse ist es fast stets unvermeidlich, daß nicht auch organische Substanzen unerwünschterweise in die Einbettmasse gelangen, so z. B. Staub aus der Luft, 0l, Fett von Maschinenteilen od. dgl. m.Method for improving the insulation resistance of with organic Electrical radiators with insulating means The heating conductors of electrical Radiators, e.g. B. of hot plates, are almost generally made of an investment embedded in inorganic substances. During processing, storage and preparation or the processing of this insulating compound, it is almost always inevitable that not even organic substances undesirably get into the investment, e.g. B. dust from the air, oil, grease from machine parts or the like. M.
Im allgemeinen werden diese organischen Stoffe beim ersten Aufheizen des fertigen Gerätes dadurch unschädlich, da sie unter Verbrauch von Luftsauerstoff verbrennen. In den Fällen, in denen aber der Zutritt des Luftsauerstoffes behindert wird, z. B. durch den Einbau der Platte in den Herd oder aber durch den Aufbau der Kochplatte selbst, z. B. dann, wenn diese auf ihrer Unterseite durch eine eingeschrumpfte Abdeckmembran verschlossen ist, kann es vorkommen, daß die Verbrennung der eingeschlossenen organischen Teile infolge mangelnden Sauerstoffzutritts eine unvollkommene ist oder aber sich über einen sehr langen Zeitraum erstreckt. In ersterem Falle liegt dann meist nicht mehr eine Verbrennung. sondern nur eine Verkolilung vor. In beiden Fällen. sowohl bei der Verkohlung als auch bei der langsamen Verbrennung, «-erden aber die organischen Bestandteile zu Leitern zweiter Klasse, die den Isolationszustand der Einbettinasse herabsetzen. In dem Falle einer Verkohlung wird der verschlechterte Isolierzustand sogar zu einem Dauerzustand.In general, these organic substances will be removed during the first heating the finished device is harmless because it consumes atmospheric oxygen burn. In those cases in which, however, the access of atmospheric oxygen is hindered will, e.g. B. by installing the plate in the stove or by building the Hotplate itself, e.g. B. when these are shrunk on their underside by a Cover membrane is closed, it can happen that the burning of the trapped organic parts are imperfect due to a lack of oxygen or but extends over a very long period of time. In the former case then lies mostly not anymore combustion. but just a cluster before. In both cases. both in charring and slow combustion, «-But the organic constituents ground to conductors of the second class, the state of isolation lower the embedding mass. In the case of char, the deteriorated Isolation state even to a permanent state.
Lm die torbezeichneten Nachteile zu verhindern, werden dem Isoliermittel sauerstoffabgebende Stoffe beigemengt oder aber in dessen Nähe angeordnet. Hierdurch wird erreicht. daß der künstlich zur Verbrennung bereitgestellte Sauerstoff diese nicht nur beschleunigt, sondern auch mit Sicherheit eine vollkommene Verbrennung gewährleistet ist. Die Beigabe der sauerstoffabgebenden Substanzen kann unmittelbar zur Einbettmasse erfolgen, zum anderen besteht die Möglichkeit, sie an bestimmten Stellen der Kochplatte, insbesondere an solchen Stellen anzuordnen, die eine für die Sauerstoffabgabe besonders günstig liegende Temperatur aufweisen. Als sauerstoffabgehende Mittel kommen in erster Linie Magnesiumsuperoxyd. Barium- oder Kalziumsuperoxyd in Frage. Selbstverständlich sind auch alle die Stoffe brauchbar, die reichlich Sauerstoff enthalten und diesen bei Erwärmung leicht abgeben.In order to prevent the drawbacks mentioned above, the insulating means Oxygen-releasing substances added or arranged in its vicinity. Through this is achieved. that the oxygen artificially made available for combustion this not only accelerated, but also with certainty a perfect combustion is guaranteed. The addition of the oxygen-releasing substances can be carried out immediately to the investment material, on the other hand it is possible to use them on certain Place the hotplate, in particular to be arranged in such places that a for the oxygen release have a particularly favorable temperature. As oxygen-releasing Compounds primarily come from superoxide magnesium. Barium or calcium peroxide in question. Of course, all the substances that are plentiful can also be used Contain oxygen and release it easily when heated.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES146453D DE765865C (en) | 1941-08-02 | 1941-08-02 | Method for improving the insulation resistance of electrical heating elements provided with organic insulating means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES146453D DE765865C (en) | 1941-08-02 | 1941-08-02 | Method for improving the insulation resistance of electrical heating elements provided with organic insulating means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE765865C true DE765865C (en) | 1954-05-10 |
Family
ID=7542373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES146453D Expired DE765865C (en) | 1941-08-02 | 1941-08-02 | Method for improving the insulation resistance of electrical heating elements provided with organic insulating means |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE765865C (en) |
-
1941
- 1941-08-02 DE DES146453D patent/DE765865C/en not_active Expired
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