DE219083C - - Google Patents
Info
- Publication number
- DE219083C DE219083C DENDAT219083D DE219083DA DE219083C DE 219083 C DE219083 C DE 219083C DE NDAT219083 D DENDAT219083 D DE NDAT219083D DE 219083D A DE219083D A DE 219083DA DE 219083 C DE219083 C DE 219083C
- Authority
- DE
- Germany
- Prior art keywords
- core
- sheets
- section
- cross
- center
- 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.)
- Active
Links
- 239000002184 metal Substances 0.000 description 5
- 230000001154 acute Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0233—Manufacturing of magnetic circuits made from sheets
- H01F41/024—Manufacturing of magnetic circuits made from deformed sheets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Coils Or Transformers For Communication (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Zur Vermeidung der Verluste durch Wirbelströme müssen bekanntlich die Bleche von Kernen für Induktoren u. dgl. so angeordnet werden, daß die Kraftlinien möglichst immer parallel zur Fläche der Bleche austreten können. Dieses läßt sich bei geschlossenen Kernen meistens erreichen, da der Kraftlinienweg innerhalb des Kernes verläuft und die Lage der Bleche dementsprechend gewählt werden kann.In order to avoid losses due to eddy currents, it is known that the sheets of Cores for inductors and the like are arranged so that the lines of force as always can emerge parallel to the surface of the sheets. This can be done with closed cores mostly because the path of the lines of force runs within the core and the position of the Sheets can be chosen accordingly.
ίο Anders ist es bei offenen Kernen, bei denen die Kraftlinien in Kurven austreten, die von der Mitte aus immer größer werden, so daß der Austrittswinkel für jeden verschiedenen Querschnitt ein verschiedener wird. Man hat ' aus diesem Grunde den Kern statt aus Blechen aus Drähten zusammengesetzt und dadurch zwar die Wirbel Verluste verringert, dafür aber andere Verluste, nämlich Hysteresisverluste mit in Kauf nehmen müssen, die den erzielten Vorteil wieder aufhoben. Ferner hat man auch vorgeschlagen, den Kern aus radial um den Mittelpunkt des Kernquerschnitts angeordneten Blechen herzustellen. Diese Anordnung ist aber sehr kompliziert, zumal die An- · zahl der Bleche mit der Entfernung von dem Mittelpunkt zunehmen muß. Sie hat unseres Wissens keine Einführung in die Praxis gefunden. ίο It is different with open cores, where the lines of force emerge in curves that become larger and larger from the center, so that the exit angle becomes different for each different cross-section. One has ' for this reason the core is composed of wires instead of sheet metal and thereby the eddy losses are reduced, but other losses, namely hysteresis losses have to take into account that canceled out the advantage achieved. Furthermore, one has also proposed to arrange the core from radially around the center point of the core cross-section Manufacture sheet metal. However, this arrangement is very complicated, especially since the number of sheets must increase with distance from the center. She has ours Knowledge has not found an introduction to practice.
Die vorliegende Erfindung betrifft einen magnetischen Kern der letzteren Art, insbesondere für offene Induktoren, der sich durch eine besonders einfache und günstige Bauart auszeichnet. Sie besteht darin, daß der Kern statt aus einfachen Blechen aus Sätzen ineinandergeschachtelter Bleche von winkelförmigem Querschnitt zusammengesetzt ist, welche in bekannter Weise radial um den Mittelpunkt des Kernquerschnittes angeordnet sind. Hierdurch ist erreicht einerseits, daß die Kraftlinien, wo sie auch immer austreten, dieses wenigstens ungefähr parallel zu den Kernflächen oder mindestens in einem verhältnismäßig sehr spitzen Winkel zu ihnen tun. Dieses wird naturgemäß um so besser erreicht, je kleiner der Winkel des Bleches ist. Andererseits ist diese Konstruktion äußerst einfach,* ja einfacher als die üblichen Anordnungen, bei denen keine oder nur ungenügende Rücksicht auf Wirbelstromverluste genommen wird.The present invention particularly relates to a magnetic core of the latter type for open inductors, which are characterized by a particularly simple and inexpensive design excels. It consists in the fact that the core consists of nested sets of metal sheets instead of simple metal sheets Sheet metal is composed of angular cross-section, which in a known manner radially around the center of the core cross-section are arranged. This achieves on the one hand that the lines of force, wherever they emerge, this at least approximately parallel to the core surfaces or at least at a relatively very acute angle to them. Naturally, this is all the better achieved, the smaller the angle of the sheet. On the other hand, this construction is extremely simple, * yes, simpler than the usual arrangements in which no or only insufficient consideration is given to eddy current losses will.
Die Erfindung ist auf der Zeichnung in zwei Figuren dargestellt; Fig. 1 zeigt den Querschnitt eines Kernes, ' und zwar nur für ein Segment durchgezeichnet, und Fig. 2 ein .einzelnes Kernblech.The invention is shown in the drawing in two figures; Fig. 1 shows the Cross-section of a core, 'and only drawn for one segment, and FIG .single core sheet.
Bei dem gewählten Ausführungsbeispiel enthält der. Kern acht Segmente, entsprechend dem Kantenwinkel der Bleche von 45 °. In jedes der acht Bleche sind ähnliche Winkelbleche eingeschachtelt, deren Schenkellängen stufenweise abnehmen, um die Bildung einer kreisförmigen Kontur zu ermöglichen.In the selected embodiment, the contains. Core eight segments, corresponding to that Edge angle of the sheets of 45 °. Similar angled sheets are nested in each of the eight sheets, gradually decrease their leg lengths in order to enable the formation of a circular contour.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE219083C true DE219083C (en) |
Family
ID=480243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DENDAT219083D Active DE219083C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE219083C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5255896A (en) * | 1991-07-15 | 1993-10-26 | Financiere Inter-Plus, Inc. | Electrified fence for chasing pigeons away |
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0
- DE DENDAT219083D patent/DE219083C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5255896A (en) * | 1991-07-15 | 1993-10-26 | Financiere Inter-Plus, Inc. | Electrified fence for chasing pigeons away |
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