DE1021094B - Switching converter with circulating cooling - Google Patents

Switching converter with circulating cooling

Info

Publication number
DE1021094B
DE1021094B DES42096A DES0042096A DE1021094B DE 1021094 B DE1021094 B DE 1021094B DE S42096 A DES42096 A DE S42096A DE S0042096 A DES0042096 A DE S0042096A DE 1021094 B DE1021094 B DE 1021094B
Authority
DE
Germany
Prior art keywords
copper
circulating cooling
switching converter
cooling
contact
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.)
Pending
Application number
DES42096A
Other languages
German (de)
Inventor
Dipl-Ing Hans-Joach Kleinvogel
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DES42096A priority Critical patent/DE1021094B/en
Publication of DE1021094B publication Critical patent/DE1021094B/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/20—Contact mechanisms of dynamic converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

Es ist bekannt, bei Schaltstromrichtern, z. B. mit Abhebekontakten, Kontaktflächen aus Silber zu verwenden, um einen guten und verlustlosen Stromübergang zu erzielen. Die silbernen Kontaktflächen werden jedoch durch Luft, die Schwefelwasserstoff enthält, angegriffen. Dabei wird der Widerstand der Kontakte, dessen geringer Wert für den Stromrichter besonders wichtig ist, vergrößert und der Wirkungsgrad des Stromrichters damit verschlechtert.It is known in switching converters such. B. to use with lifting contacts, contact surfaces made of silver, to achieve a good and lossless current transfer. The silver contact surfaces are but attacked by air containing hydrogen sulphide. The resistance is the Contacts, the low value of which is particularly important for the converter, increases and the efficiency of the converter thus deteriorated.

Vorliegende Erfindung bezweckt die Beseitigung der vorgenannten Nachteile durch Reinigung der Luft von Schwefelwasserstoff. Dies wird dadurch erzielt, daß bei Schaltstromrichtern mit Kontaktflächen aus Silber und Kühlung der Kontakteinrichtungen durch einen umlaufenden, rückgekühlten Luftstrom erfindungsgemäß die vom Luftstrom bestrichenen Flächen des Rückkühlers mit Kupfer belegt, vorzugsweise nach dem Verfahren von Sch ο op mit Kupfer bespritzt sind. Kupferoberflächen haben die Eigenschaft, der mit ihnen in Berührung kommenden Luft einen eventuell vorhandenen Gehalt an Schwefelwasserstoff zu entziehen. Diese Wirkung tritt in besonderem Maße bei einem erfindungsgemäß ausgebildeten Rückkühler für eine Umluftkühlung in Erscheinung, da die Kühlluft in diesem Fall fortlaufend mit den Kupferflächen in Berührung kommt. Die Erfindung kann mit geringem Aufwand so ausgeführt werden, daß die Kühlflächen des Kühlers nach dem Schoopschen Verfahren mit Kupfer bespritzt werden.The present invention aims to eliminate the aforementioned drawbacks by purifying the air of hydrogen sulfide. This is achieved in that in switching converters with contact surfaces Silver and cooling of the contact devices by a circulating, recooled air stream according to the invention the surfaces of the dry cooler that are swept by the air flow are covered with copper, preferably Splashed with copper using the method of Schο op are. Copper surfaces have the property of being one with the air they come into contact with to remove any existing hydrogen sulfide content. This effect occurs in particular Dimensions in a recooler designed according to the invention for a circulating air cooling in appearance, since the In this case, cooling air continuously comes into contact with the copper surfaces. The invention can with be carried out with little effort so that the cooling surfaces of the cooler according to the Schoop method be splashed with copper.

Die Zeichnung zeigt als Ausführungsbeispiel der Erfindung einen Kontaktumformer mit eingebauten Kupferflächen. Die Kontaktbrücken 1 werden über eine Exzenterwelle 2 durch einen Synchronmotor 3 periodisch von den Stromschienen 9 abgehoben, von denen zwei sichtbar sind. Die im Umformergehäuse 4 eingeschlossene Luft wird durch den Ventilator 5, der auf der Exzenterwelle sitzt, in Richtung der Schaltstromrictiter mit UmlaufkühlungAs an embodiment of the invention, the drawing shows a built-in contact converter Copper surfaces. The contact bridges 1 are driven by a synchronous motor 3 via an eccentric shaft 2 periodically lifted off the busbars 9, two of which are visible. The 4 trapped air is by the fan 5, which sits on the eccentric shaft, in the direction of Switching current rictiter with circulation cooling

Anmelder:Applicant:

Siemens-SchuckertwerkeSiemens-Schuckertwerke

Aktiengesellschaft,Corporation,

Berlin und Erlangen,Berlin and Erlangen,

Erlangen, Werner-von-Siemens-Str. 50Erlangen, Werner-von-Siemens-Str. 50

Dipl.-Ing. Hans-Joachim Kleinvogel,Dipl.-Ing. Hans-Joachim Kleinvogel,

Berlin-Siemensstadt,
ist als Erfinder genannt wordenBerlin-Siemensstadt,
has been named as the inventor

Pfeile umgewälzt. Sie streicht dabei durch die Kanäle 6 eines Umluftkühlers. Durch die horizontal (senkrecht zur Zeichenebene) verlaufenden Hohlräume 7 des Kühlers strömt ein primäres Kühlmittel, z. B. Wasser. Die von der zirkulierenden Luft bestrichenen Wände der Kanäle 6 besitzen auf der Außenseite aufgespritzte Kupferschichten 8.Arrows circulated. It passes through the channels 6 of a convection cooler. Through the horizontally (perpendicular to the plane of the drawing) running cavities 7 of the cooler flows a primary coolant, z. B. water. The walls of the channels 6 coated by the circulating air have on the Copper layers sprayed on outside 8.

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: Schaltstromrichter mit Kontaktflächen aus Silber und Kühlung der Kontakteinrichtungen durch einen umlaufenden, rückgekühlten Luftstrom, dadurch gekennzeichnet, daß die vom Luftstrom bestrichenen Flächen des Rückkühlers mit Kupfer belegt, vorzugsweise nach dem Verfahren von Schoop mit Kupfer bespritzt sind.Switching converters with silver contact surfaces and cooling of the contact devices a circulating, recooled air stream, characterized in that the swept by the air stream Surfaces of the dry cooler covered with copper, preferably sprayed with copper using the Schoop method. In Betracht gezogene Druckschriften:
Deutsche Patentschrift Nr. 498 120.Considered publications:
German patent specification No. 498 120. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DES42096A 1954-12-27 1954-12-27 Switching converter with circulating cooling Pending DE1021094B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES42096A DE1021094B (en) 1954-12-27 1954-12-27 Switching converter with circulating cooling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES42096A DE1021094B (en) 1954-12-27 1954-12-27 Switching converter with circulating cooling

Publications (1)

Publication Number Publication Date
DE1021094B true DE1021094B (en) 1957-12-19

Family

ID=7484221

Family Applications (1)

Application Number Title Priority Date Filing Date
DES42096A Pending DE1021094B (en) 1954-12-27 1954-12-27 Switching converter with circulating cooling

Country Status (1)

Country Link
DE (1) DE1021094B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE498120C (en) * 1925-06-25 1930-05-17 Siemens Schuckertwerke Akt Ges Device for reducing the oxygen content of the cooling air of electrical machines cooled by a closed circulating air flow

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE498120C (en) * 1925-06-25 1930-05-17 Siemens Schuckertwerke Akt Ges Device for reducing the oxygen content of the cooling air of electrical machines cooled by a closed circulating air flow

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