DE463328C - Electric capacitor with a protective cover covering it against the ingress of moisture - Google Patents
Electric capacitor with a protective cover covering it against the ingress of moistureInfo
- Publication number
- DE463328C DE463328C DEB127125D DEB0127125D DE463328C DE 463328 C DE463328 C DE 463328C DE B127125 D DEB127125 D DE B127125D DE B0127125 D DEB0127125 D DE B0127125D DE 463328 C DE463328 C DE 463328C
- Authority
- DE
- Germany
- Prior art keywords
- moisture
- protective cover
- ingress
- cover covering
- electric capacitor
- 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
- 239000003990 capacitor Substances 0.000 title claims description 12
- 230000001681 protective effect Effects 0.000 title claims description 7
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 claims description 7
- 229920001800 Shellac Polymers 0.000 claims description 6
- 229940113147 shellac Drugs 0.000 claims description 6
- 235000013874 shellac Nutrition 0.000 claims description 6
- 239000004208 shellac Substances 0.000 claims description 6
- 229920003002 synthetic resin Polymers 0.000 claims description 6
- 239000000057 synthetic resin Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/12—Protection against corrosion
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Ceramic Capacitors (AREA)
Description
Elektrischer Kondensator mit einer ihn überziehenden Schutzhülle gegen das Eindringen von Feuchtigkeit Um elektrische Kondensatoren gegen Feuchtigkeit zu schützen, ist bereits vorgeschlagen worden, den Kondensator mit einer ihn überziehenden Schutzhülle aus Kunstharz, wie dem Kondensationsprodukt aus Phenolen und Formaldehyd, zu versehen. Es hat sich aber herausgestellt, daß ein Überzug aus diesen Stoffen an den Metallflächen der Kondensatoren nicht gut haftet und außerdem infolge seiner Sprödigkeit leicht brüchig wird. Hierin liegt eine große Gefahrenquelle, weil die mit dem Überzug bezweckte Dichtung unter Umständen von vornherein nicht erzielbar ist oder aber nach kurzer Zeit wieder unvollkommen wird. Man hat ferner vorgeschlagen, Kondensatoren mit Schellack zu überziehen, Schellack haftet zwar gut auf Metall, ist aber nicht feuchtigkeitsbeständig.Electrical capacitor with a protective cover covering it against the penetration of moisture To electrical capacitors against moisture To protect, it has already been proposed to cover the capacitor with a covering Protective cover made of synthetic resin, such as the condensation product of phenols and formaldehyde, to provide. It has been found, however, that a coating made of these substances does not adhere well to the metal surfaces of the capacitors and, moreover, as a result of it Brittleness becomes easily brittle. This is a great source of danger because the The seal intended for the coating may not be achievable from the outset under certain circumstances or becomes imperfect again after a short time. It has also been suggested that Covering capacitors with shellac, although shellac adheres well to metal, but is not moisture-proof.
Gemäß der Erfindung wird nun durch die Verbindung der beiden an sich bekannten Maßnahmen eine dauerhafte feuchtigkeitsundurchlässige Schutzhülle bei Kondensatoren erreicht. Gegenstand der Erfindung ist somit ein elektrischer Kondensator mit einer ihn überziehenden Schutzhülle gegen das Eindringen von Feuchtigkeit, die aus einer Schellackschicht und einer darüber befindlichen Kunstharzschicht besteht. Hierbei ist die gut an den Metallteilen haftende Schicht aus Schellack durch die Kunstharzschicht gegen den Einfluß der Feuchtigkeit geschützt. Der Schellack bildet das Bindemittel zwischen der Kunstharzschicht und den Metallteilen und ist von besonderer Wichtigkeit, wenn der Schutzüberzug in an sich bekannter Weise, z. B. bei in Metallbechern eingebauten Kondensatoren, diese nur teilweise zu bedecken braucht.According to the invention, the connection of the two is now per se known measures a permanent moisture-impermeable protective cover Capacitors reached. The invention thus relates to an electrical capacitor with a protective cover covering it against the ingress of moisture, which consists of a shellac layer and a synthetic resin layer on top. Here, the shellac layer, which adheres well to the metal parts, is through the Synthetic resin layer protected against the influence of moisture. The shellac forms the binder between the synthetic resin layer and the metal parts and is special Importance when the protective coating in a known manner, e.g. B. in metal cups built-in capacitors that only needs to partially cover them.
Der Schelläck und das Kunstharz werden auf den Kondensator in beliebiger Weise aufgebracht, am einfachsten durch Eintauchen des Kondensators in Lösungen dieser Stoffe mit nachfolgendem Trocknen des Überzugs durch Zuführung von NVärme.The shellac and the synthetic resin are applied to the capacitor in any Applied manner, the easiest way to do this is by immersing the capacitor in solutions of these substances with subsequent drying of the coating by adding N heat.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB127125D DE463328C (en) | 1926-08-29 | 1926-08-29 | Electric capacitor with a protective cover covering it against the ingress of moisture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB127125D DE463328C (en) | 1926-08-29 | 1926-08-29 | Electric capacitor with a protective cover covering it against the ingress of moisture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE463328C true DE463328C (en) | 1928-07-26 |
Family
ID=6996841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEB127125D Expired DE463328C (en) | 1926-08-29 | 1926-08-29 | Electric capacitor with a protective cover covering it against the ingress of moisture |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE463328C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1022695B (en) * | 1953-02-26 | 1958-01-16 | Felten & Guilleaume Carlswerk | Arrangement to protect the electrically active part of a wound capacitor |
| DE1117768B (en) * | 1958-11-12 | 1961-11-23 | Wilhelm Westermann | Electrical capacitor encapsulated with cast resin and its production process |
-
1926
- 1926-08-29 DE DEB127125D patent/DE463328C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1022695B (en) * | 1953-02-26 | 1958-01-16 | Felten & Guilleaume Carlswerk | Arrangement to protect the electrically active part of a wound capacitor |
| DE1117768B (en) * | 1958-11-12 | 1961-11-23 | Wilhelm Westermann | Electrical capacitor encapsulated with cast resin and its production process |
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