DE745938C - Collector for electrical machines with fins made of a material other than copper - Google Patents
Collector for electrical machines with fins made of a material other than copperInfo
- Publication number
- DE745938C DE745938C DEZ24698D DEZ0024698D DE745938C DE 745938 C DE745938 C DE 745938C DE Z24698 D DEZ24698 D DE Z24698D DE Z0024698 D DEZ0024698 D DE Z0024698D DE 745938 C DE745938 C DE 745938C
- Authority
- DE
- Germany
- Prior art keywords
- lamellas
- collector
- copper
- brush
- electrical machines
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/04—Commutators
- H01R39/045—Commutators the commutators being made of carbon
Landscapes
- Motor Or Generator Current Collectors (AREA)
Description
Kollektor für elektrische Maschinen, der Lamellen aus anderem Material als Kupfer aufweist Die Kollektoren für Gleichstrom- und Wechselstrommäschinen besitzen in der Regel Lamellen aus Hartkupfer. Die auf einem solchen Kollektor gleitenden Kohle- oder Metallbürsten schließen nun je nach ihrer Auflagefläche zwei oder mehrere Lamellen und damit die mit diesen verbundenen Anker-Wicklungen kurz, so daß zwischen den kurzgeschlossenenLamellen verhältnismäßig starke Kurzschlußsträme auftreten, deren Unterbrechung beim Lauf des Kollektors ein Bürstenfeuer hervorruft. Das Bürstenfeuer macht sich besonders bei Maschinen für höhere Spannurig, wo die Lamellenspannung verhältnismäßig hoch ist, unangenehm bemerkbar und erschwert die funkenfreie Kom= mutierung derartiger Maschinen. Das Bürstenfeuer bewirkt nun nicht nur eine starke Erwärmung und vorzeitige Abnützung des Kollektors, sondern verursacht auch Störfelder, die besonders bei Maschinen für radiotechnische Zwecke vermieden werden müssen.Collector for electrical machines, the lamellas made of other material than copper has the collectors for direct current and alternating current machines usually lamellas made of hard copper. Those sliding on such a collector Carbon or metal brushes now close two or more depending on their contact surface Lamellae and thus the armature windings associated with them short, so that between Relatively strong short-circuit currents occur in the short-circuited lamellas, the interruption of which causes a brush fire when the collector is running. The brush fire is particularly suitable for machines for higher clamping, where the lamellar tension is relatively high, noticeable unpleasantly and makes spark-free communication more difficult mutation of such machines. The brush fire now not only causes a strong one Warming up and premature wear of the collector, but also causes interference fields, which must be avoided especially with machines for radio technical purposes.
Aufgabe der Erfindung ist es, einen Kollektor zu schaffen, bei dem praktisch kein Bürstenfeuer auftritt. Erfindungsgemäß wird das dadurch erreicht, daß die Lamellen zur Verminderung des Kurzschlußstromes zwischen zwei Lamellen und damit der Funkenbildung unter den Bürsten aus Widerstandsmaterial mit geringerem Leitwert als Kupfer bestehen.The object of the invention is to create a collector in which practically no brush fire occurs. According to the invention this is achieved by that the slats to reduce the short-circuit current between two slats and thus sparking under the brushes made of resistance material with less Conductance exist as copper.
Es sind bereits Kollektoren mit Lamellen aus anderem Material als Kupfer, beispielsweise aus Eisen, bekannt. Diese Lamellenmateralien sind hier jedoch.nicht mit Rücksicht auf ihren geringeren Leitwert als Kupfer ver-Nvendet worden.There are already collectors with fins made of a different material than Copper, for example from iron, is known. However, these lamellar materials are not here has been used as copper in view of its lower conductance.
Als Widerstandsmaterial für die Lamellen eines Kollektors gemäß der
Erfindung kommen neben Metallen mit geringerem Leitwert als Kupfer auch Hartkohle
in Frage, deren verhältnismäßig hoher elektrischer Widerstand den Kurzschlußstrom
zwischen zwei Lamellen derart herabsetzt, daß eine Funkenbildung nicht mehr oder
nur noch in geringem Maße auftritt. Bei Verwendung von Lamellen aus Kohle werden
zweckmäßig die Lamellenenden, die für den Anschluß der
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEZ24698D DE745938C (en) | 1938-07-23 | 1938-07-23 | Collector for electrical machines with fins made of a material other than copper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEZ24698D DE745938C (en) | 1938-07-23 | 1938-07-23 | Collector for electrical machines with fins made of a material other than copper |
Publications (1)
Publication Number | Publication Date |
---|---|
DE745938C true DE745938C (en) | 1944-05-24 |
Family
ID=7626214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEZ24698D Expired DE745938C (en) | 1938-07-23 | 1938-07-23 | Collector for electrical machines with fins made of a material other than copper |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE745938C (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE298288C (en) * | ||||
DE63622C (en) * | F. A. HASELWANDER in Offenburg, Baden | Collector made of coal for electrical machines |
-
1938
- 1938-07-23 DE DEZ24698D patent/DE745938C/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE298288C (en) * | ||||
DE63622C (en) * | F. A. HASELWANDER in Offenburg, Baden | Collector made of coal for electrical machines |
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