EP0590741B1 - Transformer or choke - Google Patents
Transformer or choke Download PDFInfo
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- EP0590741B1 EP0590741B1 EP93250221A EP93250221A EP0590741B1 EP 0590741 B1 EP0590741 B1 EP 0590741B1 EP 93250221 A EP93250221 A EP 93250221A EP 93250221 A EP93250221 A EP 93250221A EP 0590741 B1 EP0590741 B1 EP 0590741B1
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- European Patent Office
- Prior art keywords
- transformer
- flanges
- plates
- choke according
- choke
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
- H01F27/325—Coil bobbins
Definitions
- the invention relates to a transformer or a choke according to the preamble of claim 1.
- a transformer whose winding body consists of a multi-chamber injection molded part for receiving the transformer windings. Part of the windings should be applied concentrically, with insulating half-shells snapped onto the inner winding separating them mechanically and electrically from the outer winding.
- This known winding body is specially tailored to a specific type of transformer with three windings of very specific dimensions. Its geometric design precludes its use in transformers with differently designed windings and in transformers for higher electrical outputs.
- a ferrite transformer is known from DE-U1-89 05 200, the core of which can be constructed from several smaller, E-shaped or E- and I-shaped ferrites, depending on the power requirement. These ferrites penetrate the transformer windings with their central webs and completely enclose them with their yokes and their external webs.
- the windings consist of several individual windings, without winding bodies, which are arranged next to each other parallel to the parting plane of the ferrite cores.
- the ferrite cores are fixed by mutual gluing.
- This known transformer can be different by default design many ferrites for different performances; for this purpose, however, it requires prefabricated winding elements which are adapted to the individual application and which are plugged onto the ferrites.
- a choke according to the preamble of claim 1 is known, which is suitable for the use of gas and / or vapor discharge lamps.
- the winding body of the choke has two flanges and two rectangular plates connecting them, the winding winding from the outside around the flanges and the plates.
- the winding body is made in one piece and thus adapted to a specific winding; Windings that are adapted to other electrical outputs require a differently designed winding body.
- the object of the invention is to design a transformer or a choke according to the preamble of claim 1 so that he / she can be designed as required for different outputs without the need for specially designed, prefabricated winding elements or complex winding element elements.
- the windings / windings are to be applied in a known manner to a winding body and the windings are to be placed together with the winding body on the core elements of the transformer / choke or the core elements are to be fitted into the winding body provided with windings.
- the invention solves this problem by the characterizing features of claim 1.
- the construction of a winding body from flanges which are always of the same size and at least two plates of predetermined length allows the construction of winding bodies of different sizes to accommodate differently high core sheet stacks or a different number of individual ferrite cores with a minimum of effort .
- the winding body is formed by simply plugging its individual parts together and thus obtains its strength from the winding / windings wrapping around it. These windings can be applied to the winding body in a known manner using an automatic machine.
- the cores should consist of E- or E- and I-shaped sheets or according to claim 4 of E- or E- and I-shaped ferrites, which if necessary are to be strung together in a row. This makes it easy to produce cores for different outputs.
- the stack height of the sheets or ferrites is to be coordinated with the length of the plates spacing the winding flanges, which may have to be done by using ferrites of different thicknesses.
- a change in the magnetic properties of the transformer / choke core as a whole can be effected according to claim 6 by using ferrites with different magnetic properties and / or according to claim 7 by differently designing the webs on the ferrites or the laminated sheets of the core.
- Such measures are taken, for. B. to control at least parts of the core into saturation at certain current levels and thus change the transmission properties of the core.
- the sheets or ferrites of the core should be glued together according to claim 8; in this way, noises when magnetizing the cores are largely avoided, and the transformer or choke is mechanically stable.
- the yokes of the winding body are preferably designed as plastic injection-molded parts, on which, according to claim 12, angle pieces can be provided for mounting the transformer / choke on any mounting surface.
- the plates, which keep the flanges at a distance and together with these form the winding body, are preferably made of hard tissue or hard paper executed.
- At least one layer of an insulating tape is to be arranged between the winding body and the winding. This tape holds the winding body together until it is braced by the winding / windings after it has been applied.
- An embodiment characterized in claim 13 provides for the flanges to be provided with recesses for the rotationally secure reception of hexagon screws. About these hexagon screws u. a. the winding / windings are contacted.
- the heads of the hexagon screws pointing inwards to the cores are to be covered according to claim 14 by insulation plates.
- the electrical separation of the screw heads from the core is achieved through them.
- the insulation plates according to claim 15 are to be provided with recesses and the flanges with elevations that fit into the recesses.
- the flanges are to be provided with corresponding recesses.
- the invention is explained below with reference to an embodiment shown in the drawing.
- the drawing shows an exploded view of the structure of a transformer designed according to the invention, the illustration of the transformer windings being omitted for reasons of clarity; the arrows indicate the assembly of the transformer during assembly.
- the transformer core consists of several E-shaped ferrite cores, which work together in pairs. These Ferrite cores, in the exemplary embodiment each two or three pieces FK11 to FK13 and FK21 to FK23 each adjoin one another with their profiled sides; they are later in the winding body of the transformer z. B. determined by gluing with the help of a varnish.
- the winding body consists of two separate flanges F1, F2, which are of identical construction and are preferably designed as plastic injection-molded parts, and two separate plates P1 and P2 standing vertically on them. These plates are preferably made of hard paper or hard tissue. With their sides facing the two flanges, they are inserted into corresponding recesses A on the inner sides of the two flanges when the winding former is assembled, and provisionally fixed in this position by an insulating tape (not shown) placed around the plates and the flanges. The plates then keep the two yokes at a distance; the distance between the plates corresponds to the width of the central web of the ferrite cores.
- the winding body pre-fixed with the aid of the insulating tape can now be wound by hand or by machine, the windings wrapping around the two plates P1 and P2 and the parts of the flanges F1 and F2 delimited by them.
- the ferrite cores are placed onto the winding body from the side, with their central webs reaching between the plates P1 and P2 and the flanges F1 and F2 and the outer webs closing around the windings; the windings run parallel to the separating surface TF between the ferrite cores interacting in pairs.
- the flanges F1 and F2 have molded angle pieces W11 and W12 or W21 and W22, by means of which the transformer can be attached to any base surface. Further the flanges have recesses B for the non-rotatable reception of hexagon screws S penetrating the flanges from the inside. The transformer windings can be contacted via these hexagon screws; however, the screws can also be used to attach terminals or any other components to the transformer.
- the flanges in the area of the inside are provided with flat recesses M, into which insulation plates IP can be inserted, which cover the screw heads towards the cores.
- the flanges and the insulation plates are provided with aligned elevations D and recesses C, by means of which the insulation plates can be fixed to the flanges.
- plates P1 and P2 of different lengths By using plates P1 and P2 of different lengths, it is possible in a simple manner to produce winding cores of different sizes for transformers with different outputs using the same flanges.
- the length of the boards to be used is determined by the stack height of the respective transformer core.
- the available lengths of the plates are advantageously matched to certain stack heights of the ferrites, which result from the stringing together of ferrites of the same width or of different widths.
- corresponding sheets can of course also be used to build up laminated core packages.
- sheets or ferrites with different magnetic properties can be used and / or sheets or ferrites with webs of different lengths can be used.
- E- and I-shaped sheets or ferrites can also be used, in which case the webs of the sheets or ferrites must be long enough to completely penetrate the winding body.
- Shortened middle legs MS can also be used to achieve a defined characteristic or to build a throttle.
- the transformer / choke according to the invention allows the construction of transformers with different powers using uniform flanges; Different lengths only have to be provided for the size of the respective transformer / choke, by means of which the flanges are assembled to form bobbins.
- the bobbins can be easily assembled, which can happen shortly before they are wound, so that very little space is required for storage, in contrast to the provision of one-piece bobbins.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Of Coils (AREA)
- Coils Or Transformers For Communication (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
Description
Die Erfindung bezieht sich auf einen Transformator oder eine Drossel nach dem Oberbegriff des Anspruches 1.The invention relates to a transformer or a choke according to the preamble of claim 1.
Aus dem DE-U1-91 14 099 ist ein Transformator bekannt dessen Wickelkörper aus einem mehrkammerigen Spritzgußteil zur Aufnahme der Trafo-Wicklungen besteht. Ein Teil der Wicklungen soll konzentrisch aufgebracht sein, wobei auf die innere Wicklung aufgerastete Isolierstoff-Halbschalen diese mechanisch und elektrisch von der äußeren Wicklung trennen. Dieser bekannte Wickelkörper ist speziell abgestimmt auf einen konkreten Typ von Transformator mit drei Wicklungen ganz bestimmter Abmessungen. Seine geometrische Ausgestaltung schließt seine Anwendung bei Transformatoren mit anders gestalteten Wicklungen sowie bei Transformatoren für höhere elektrische Leistungen aus.From DE-U1-91 14 099 a transformer is known whose winding body consists of a multi-chamber injection molded part for receiving the transformer windings. Part of the windings should be applied concentrically, with insulating half-shells snapped onto the inner winding separating them mechanically and electrically from the outer winding. This known winding body is specially tailored to a specific type of transformer with three windings of very specific dimensions. Its geometric design precludes its use in transformers with differently designed windings and in transformers for higher electrical outputs.
Aus dem DE-U1-89 05 200 ist ein Ferrit-Transformator bekannt, dessen Kern je nach Leistungsbedarf aus mehreren kleineren, E-förmigen oder E- und I-förmigen Ferriten aufgebaut werden kann. Diese Ferrite durchgreifen mit ihren Mittelstegen die Trafowicklungen und umschließen diese mit ihren Jochen und ihren Außenstegen vollständig nach außen hin. Die Wicklungen bestehen aus mehreren Einzelwicklungen, ohne Wickelkörper, die parallel zur Trennebene der Ferritkerne nebeneinander angeordnet sind. Die Ferritkerne werden durch gegenseitiges Verkleben festgelegt. Dieser bekannte Transformator läßt sich durch Vorgabe von unterschiedlich vielen Ferriten zwar für unterschiedliche Leistungen ausgestalten; er benötigt hierzu aber an den einzelnen Anwendungsfall angepaßte vorgefertigte Wicklungselemente, die auf die Ferrite aufgesteckt werden.A ferrite transformer is known from DE-U1-89 05 200, the core of which can be constructed from several smaller, E-shaped or E- and I-shaped ferrites, depending on the power requirement. These ferrites penetrate the transformer windings with their central webs and completely enclose them with their yokes and their external webs. The windings consist of several individual windings, without winding bodies, which are arranged next to each other parallel to the parting plane of the ferrite cores. The ferrite cores are fixed by mutual gluing. This known transformer can be different by default design many ferrites for different performances; for this purpose, however, it requires prefabricated winding elements which are adapted to the individual application and which are plugged onto the ferrites.
Aus der DE-OS 25 03 041 ist eine Drossel nach dem Oberbegriff des Anspruchs 1 bekannt, die für die Verwendung von Gas- und/oder Dampfentladungslampen geeignet ist. Der Wickelkörper der Drossel weist zwei Flansche und zwei diese verbindende rechteckige Platten auf, wobei sich die Wicklung von außen her um die Flansche und die Platten schlingt. Der Wickelkörper ist einteilig ausgeführt und damit angepaßt an eine ganz bestimmte Wicklung; Wicklungen, die an andere elektrische Leistungen angepaßt sind, benötigen einen konstruktiv anders beschaffenen Wickelkörper.From DE-OS 25 03 041 a choke according to the preamble of claim 1 is known, which is suitable for the use of gas and / or vapor discharge lamps. The winding body of the choke has two flanges and two rectangular plates connecting them, the winding winding from the outside around the flanges and the plates. The winding body is made in one piece and thus adapted to a specific winding; Windings that are adapted to other electrical outputs require a differently designed winding body.
Aus der US-PS 2,428,826 ist ein Wickelkörper mit separierten Flanschen und Platten bekannt, die zusammengesetzt werden können. Die Wicklung oder Wicklungen schlingen sich hier in Querrichtung um die Platten und werden seitlich von den Flanschen begrenzt. Für den Aufbau unterschiedlichgroßer Wickelkörper werden mindestens unterschiedlichgroße Platten benötigt; diese Platten sind wegen ihrer Formgebung zum Verrasten mit den Flanschen konstruktiv aufwendig ausgebildet.From US-PS 2,428,826 a winding body with separate flanges and plates is known which can be assembled. The winding or windings wind here in the transverse direction around the plates and are laterally delimited by the flanges. For the construction of different sized packages, at least different sized panels are required; these plates are designed to be structurally complex due to their shape for locking with the flanges.
Aufgabe der Erfindung ist es, einen Transformator oder eine Drossel nach dem Oberbegriff des Anspruches 1 so auszugestalten, daß er/sie bedarfsweise für unterschiedliche Leistungen ausgelegt werden kann, ohne hierzu speziell ausgestaltete, vorgefertigte Wickelkörper oder aufwendig ausgestaltete Wickelkörperelemente zu benötigen. Die Wicklung/Wicklungen sollen in bekannter Weise auf einem Wickelkörper aufgebracht werden und die Wicklungen sollen zusammen mit dem Wickelkörper auf die Kernelemente des Trafos/der Drossel aufgesetzt werden bzw. die Kernelemente sollen in den mit Wicklungen versehenen Wickelkörper eingepaßt werden.The object of the invention is to design a transformer or a choke according to the preamble of claim 1 so that he / she can be designed as required for different outputs without the need for specially designed, prefabricated winding elements or complex winding element elements. The windings / windings are to be applied in a known manner to a winding body and the windings are to be placed together with the winding body on the core elements of the transformer / choke or the core elements are to be fitted into the winding body provided with windings.
Die Erfindung löst diese Aufgabe durch die kennzeichnenden Merkmale des Anspruches 1. Der Aufbau eines Wickelkörpers aus stets gleichgroßen Flanschen und jeweils mindestens zwei Platten vorbestimmter Länge gestattet den Aufbau unterschiedlich großer Wickelkörper zur Aufnahme unterschiedlich hoher Kernblechstapel oder einer unterschiedlichen Anzahl von Einzelferritkernen mit einem Minimum an Aufwand. Der Wickelkörper wird durch einfaches Zusammenstecken seiner Einzelteile gebildet und erhält somit seine Festigkeit durch die ihn umschlingende Wicklung/Wicklungen. Diese Wicklungen können in bekannter Weise mit Hilfe eines Automaten auf den Wickelkörper aufgebracht werden.The invention solves this problem by the characterizing features of claim 1. The construction of a winding body from flanges which are always of the same size and at least two plates of predetermined length allows the construction of winding bodies of different sizes to accommodate differently high core sheet stacks or a different number of individual ferrite cores with a minimum of effort . The winding body is formed by simply plugging its individual parts together and thus obtains its strength from the winding / windings wrapping around it. These windings can be applied to the winding body in a known manner using an automatic machine.
Vorteilhafte Ausgestaltungen und Weiterbildungen des erfindungsgemäßen Transformators bzw. der erfindungsgemäßen Drossel sind in den Unteransprüchen angegeben. So kann die Länge der Platten zwischen den Flanschen nach der Lehre des Anspruches 2 von Fall zu Fall variieren. Damit ist der Wickelkörper zur Aufnahme unterschiedlich großer Kerne verwendbar.Advantageous refinements and developments of the transformer according to the invention or the choke according to the invention are specified in the subclaims. So the length of the plates between the flanges according to the teaching of Claim 2 vary from case to case. The winding body can thus be used to hold cores of different sizes.
Die Kerne sollen gemäß Anspruch 3 aus E- oder E- und I-förmigen Blechen oder gemäß Anspruch 4 aus E- oder E- und I-förmigen Ferriten bestehen, die bedarfsweise zu mehreren aneinanderzureihen sind. Hierdurch lassen sich auf einfache Weise Kerne für unterschiedliche Leistungen herstellen. Die Stapelhöhe der Bleche bzw. Ferrite ist gemäß Anspruch 5 jeweils mit der Länge der die Wickelflansche beabstandenden Platten abzustimmen, was gegebenenfalls durch Verwenden unterschiedlich dicker Ferrite zu geschehen hat.According to claim 3, the cores should consist of E- or E- and I-shaped sheets or according to claim 4 of E- or E- and I-shaped ferrites, which if necessary are to be strung together in a row. This makes it easy to produce cores for different outputs. The stack height of the sheets or ferrites is to be coordinated with the length of the plates spacing the winding flanges, which may have to be done by using ferrites of different thicknesses.
Eine Veränderung der magnetischen Eigenschaften des Transformators/Drosselkerns insgesamt kann gemäß Anspruch 6 durch die Verwendung von Ferriten mit unterschiedlichen magnetischen Eigenschaften und/oder gemäß Anspruch 7 durch unterschiedliche Ausbildung der Stege an den Ferriten oder den lamellierten Blechen des Kernes bewirkt werden. Derartige Maßnahmen ergreift man z. B., um bei bestimmten Stromstärken mindestens Teile des Kernes in die Sättigung zu steuern und so die Übertragungseigenschaften des Kernes zu verändern.A change in the magnetic properties of the transformer / choke core as a whole can be effected according to claim 6 by using ferrites with different magnetic properties and / or according to claim 7 by differently designing the webs on the ferrites or the laminated sheets of the core. Such measures are taken, for. B. to control at least parts of the core into saturation at certain current levels and thus change the transmission properties of the core.
Die Bleche oder Ferrite des Kerns sollen gemäß Anspruch 8 miteinander verklebt sein; so werden Geräusche beim Ummagnetisieren der Kerne weitestgehend vermieden und es wird ein mechanisch stabiler Aufbau des Transformators bzw. der Drossel erreicht.The sheets or ferrites of the core should be glued together according to claim 8; in this way, noises when magnetizing the cores are largely avoided, and the transformer or choke is mechanically stable.
Die Joche des Wickelkörpers sind gemäß Anspruch 9 vorzugsweise als Kunststoffspritzteile auszubilden, an die gemäß Anspruch 12 Winkelstücke zur Montage des Trafos/der Drossel an einer beliebigen Montagefläche vorgesehen sein können. Die Platten, welche die Flansche auf Abstand halten und zusammen mit diesen den Wickelkörper bilden, sind gemäß Anspruch 10 vorzugsweise aus Hartgewebe oder Hartpapier ausgeführt.According to claim 9, the yokes of the winding body are preferably designed as plastic injection-molded parts, on which, according to claim 12, angle pieces can be provided for mounting the transformer / choke on any mounting surface. The plates, which keep the flanges at a distance and together with these form the winding body, are preferably made of hard tissue or hard paper executed.
Zwischen Wickelkörper und Wicklung ist gemäß Anspruch 11 mindestens eine Lage eines Isolationsbandes anzuordnen. Dieses Band halt den Wickelkörper zusammen bis er nach dem Aufbringend der Wicklung/Wicklungen durch diese abgesteift ist.At least one layer of an insulating tape is to be arranged between the winding body and the winding. This tape holds the winding body together until it is braced by the winding / windings after it has been applied.
Eine im Anspruch 13 gekennzeichnete Ausführungsform sieht vor, die Flansche mit Ausnehmungen für die drehsichere Aufnahme von Sechskantschrauben zu versehen. Über diese Sechskantschrauben kann u. a. die Kontaktierung der Wicklung/Wicklungen erfolgen.An embodiment characterized in
Die nach innen auf die Kerne weisenden Köpfe der Sechskantschrauben sind gemäß Anspruch 14 durch Isolationsplatten abzudecken. Durch sie wird die elektrische Trennung der Schraubenköpfe zum Kern erreicht. Zum Fixieren der Isolationsplatten sind die Isolationsplatten gemäß Anspuch 15 mit Ausnehmungen und die Flansche mit in die Ausnehmungen fassenden Erhebungen zu versehen.The heads of the hexagon screws pointing inwards to the cores are to be covered according to claim 14 by insulation plates. The electrical separation of the screw heads from the core is achieved through them. To fix the insulation plates, the insulation plates according to claim 15 are to be provided with recesses and the flanges with elevations that fit into the recesses.
Zum Herausführen der Wicklungsanschlüsse an die Sechskantschrauben oder an irgendwelche Anschlußklemmen sind die Flansche gemäß Anspruch 16 mit entsprechenden Ausnehmungen zu versehen.To lead out the winding connections to the hexagon screws or to any connecting terminals, the flanges are to be provided with corresponding recesses.
Die Erfindung ist nachstehend anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert. Die Zeichnung zeigt in einer Explosionsdarstellung den Aufbau eines gemäß der Erfindung ausgestalteten Transformators, wobei aus Übersichtsgründen auf die Darstellung der Trafowicklungen verzichtet wurde; die eingetragenen Pfeile kennzeichnen den Zusammenbau des Transformators bei der Montage.The invention is explained below with reference to an embodiment shown in the drawing. The drawing shows an exploded view of the structure of a transformer designed according to the invention, the illustration of the transformer windings being omitted for reasons of clarity; the arrows indicate the assembly of the transformer during assembly.
Der Transformatorkern besteht aus mehreren E-förmigen Ferritkernen, die jeweils paarweise zusammenwirken. Diese Ferritkerne, im Ausführungsbeispiel jeweils zwei bzw. drei Stück FK11 bis FK13 und FK21 bis FK23 grenzen jeweils mit ihren profilierten Seiten aneinander; sie werden später im Wickelkörper des Transformators z. B. durch Verkleben mit Hilfe eines Lackes festgelegt.The transformer core consists of several E-shaped ferrite cores, which work together in pairs. These Ferrite cores, in the exemplary embodiment each two or three pieces FK11 to FK13 and FK21 to FK23 each adjoin one another with their profiled sides; they are later in the winding body of the transformer z. B. determined by gluing with the help of a varnish.
Der Wickelkörper besteht aus zwei separaten Flanschen F1, F2, die baugleich ausgeführt und vorzugsweise als Kunststoffspritzteile ausgebildet sind und zwei separaten, auf diesen senkrecht stehenden Platten P1 und P2. Diese Platten bestehen vorzugsweise aus Hartpapier oder Hartgewebe. Mit ihren den beiden Flanschen zugewandten Seiten werden sie beim Zusammenbauen des Wickelkörpers in entsprechende Ausnehmungen A auf den Innenseiten der beiden Flansche eingesteckt und in dieser Lage durch ein nicht dargestelltes, um die Platten und die Flansche gelegtes Isolationsband vorläufig fixiert. Die Platten halten dann die beiden Joche auf Abstand; der Abstand der Platten voneinander entspricht der Breite des Mittelsteges der Ferritkerne. Der mit Hilfe des Isolationsbandes vorfixierte Wickelkörper kann nun von Hand oder maschinell bewickelt werden, wobei die Wicklungen die beiden Platten P1 und P2 und die von diesen begrenzten Teile der Flansche F1 und F2 umschlingen. Nach dem Aufbringen der Wicklungen werden die Ferritkerne von der Seite her auf den Wickelkörper aufgesetzt, wobei sie mit ihren Mittelstegen zwischen die Platten P1 und P2 und die Flansche F1 und F2 fassen und sich mit ihren äußeren Stegen um die Wicklungen schließen; die Wicklungen verlaufen parallel zur Trennflache TF zwischen den paarweise zusammenwirkenden Ferritkernen.The winding body consists of two separate flanges F1, F2, which are of identical construction and are preferably designed as plastic injection-molded parts, and two separate plates P1 and P2 standing vertically on them. These plates are preferably made of hard paper or hard tissue. With their sides facing the two flanges, they are inserted into corresponding recesses A on the inner sides of the two flanges when the winding former is assembled, and provisionally fixed in this position by an insulating tape (not shown) placed around the plates and the flanges. The plates then keep the two yokes at a distance; the distance between the plates corresponds to the width of the central web of the ferrite cores. The winding body pre-fixed with the aid of the insulating tape can now be wound by hand or by machine, the windings wrapping around the two plates P1 and P2 and the parts of the flanges F1 and F2 delimited by them. After the windings have been applied, the ferrite cores are placed onto the winding body from the side, with their central webs reaching between the plates P1 and P2 and the flanges F1 and F2 and the outer webs closing around the windings; the windings run parallel to the separating surface TF between the ferrite cores interacting in pairs.
Die Flansche F1 und F2 weisen angespritzte Winkelstücke W11 und W12 bzw. W21 und W22 auf, über die der Transformator an einer beliebigen Grundfläche zu befestigen ist. Ferner weisen die Flansche Ausnehmungen B für die drehsichere Aufnahme von die Flansche von der Innenseite her durchdringenden Sechskantschrauben S auf. Über diese Sechskantschrauben kann die Kontaktierung der Transformatorwicklungen erfolgen; die Schrauben können jedoch auch dazu dienen, Anschlußklemmen oder beliebige andere Bauelemente an dem Transformator zu befestigen. Um die elektrische Trennung der Sechkantschrauben zum Kern zu erreichen(Luftunf Kriechstrecken), sind die Flansche im Bereich der Innenseite mit flachen Mulden M versehen, in die Isolationsplatten IP eingesetzt werden können, die die Schraubenköpfe zu den Kernen hin abdecken. Die Flansche und die Isolationsplatten sind mit fluchtenden Erhebungen D und Ausnehmungen C versehen, über die die Isolationsplatten an den Flanschen fixiert werden können. An den Flanschen können in der Zeichnung nicht dargestellte Ausnehmungen zum Herausführen der Wicklungsanschlüsse aus dem Wickelkörper vorgesehen sein.The flanges F1 and F2 have molded angle pieces W11 and W12 or W21 and W22, by means of which the transformer can be attached to any base surface. Further the flanges have recesses B for the non-rotatable reception of hexagon screws S penetrating the flanges from the inside. The transformer windings can be contacted via these hexagon screws; however, the screws can also be used to attach terminals or any other components to the transformer. In order to achieve the electrical separation of the hexagon screws from the core (air and creepage distances), the flanges in the area of the inside are provided with flat recesses M, into which insulation plates IP can be inserted, which cover the screw heads towards the cores. The flanges and the insulation plates are provided with aligned elevations D and recesses C, by means of which the insulation plates can be fixed to the flanges. On the flanges recesses, not shown in the drawing, can be provided for leading the winding connections out of the winding body.
Durch die Verwendung unterschiedlichlanger Platten P1 und P2 ist es auf einfacher Weise möglich, unter Verwendung der gleichen Flansche unterschiedlichgroße Wickelkörper für Transformatoren mit unterschiedlicher Leistung herzustellen. Die Länge der zu verwendenden Platten bestimmt sich aus der Stapelhöhe des jeweiligen Trafokernes. Die verfügbaren Längen der Platten sind vorteilhaft abgestimmt auf bestimmte Stapelhöhen der Ferrite, die sich ergeben aus der Aneinanderreihung stets gleichbreiter Ferrite oder unterschiedlichbreiter Ferrite. Anstelle von Ferriten können selbstverständlich auch entsprechende Bleche zum Aufbau lamellierter Kernpakete verwendet sein. Um unterschiedliche Übertragungseigenschaften zu erzielen, können Bleche oder Ferrite mit unterschiedlichen magnetischen Eigenschaften und/oder Bleche oder Ferrite mit unterschiedlichlangen Stegen verwendet sein.By using plates P1 and P2 of different lengths, it is possible in a simple manner to produce winding cores of different sizes for transformers with different outputs using the same flanges. The length of the boards to be used is determined by the stack height of the respective transformer core. The available lengths of the plates are advantageously matched to certain stack heights of the ferrites, which result from the stringing together of ferrites of the same width or of different widths. Instead of ferrites, corresponding sheets can of course also be used to build up laminated core packages. To achieve different transmission properties, sheets or ferrites with different magnetic properties can be used and / or sheets or ferrites with webs of different lengths can be used.
Anstelle von paarweise zusammenwirkenden E-förmigen Blechen oder Ferriten können auch E- und I-förmige Bleche oder Ferrite verwendet sein, wobei im letztgenannten Fall die Stege der Bleche oder Ferrite ausreichend lang sein müssen, um den Wickelkörper vollständig zu durchdringen. Es können auch gekürzte Mittelschenkel MS verwendet werden, um eine definierte Kennlinie zu erreichen oder eine Drossel aufzubauen.Instead of E-shaped sheets or ferrites interacting in pairs, E- and I-shaped sheets or ferrites can also be used, in which case the webs of the sheets or ferrites must be long enough to completely penetrate the winding body. Shortened middle legs MS can also be used to achieve a defined characteristic or to build a throttle.
Der erfindungsgemäße Transformator/Drossel gestattet den Aufbau unterschiedlichleistungsstarker Transformatoren unter Verwendung einheitlicher Flansche; lediglich für die die Baugröße des jeweiligen Transformators/Drossel bestimmenden Platten, über die die Flansche zu Wickelkörpern zusammengesetzt werden, müssen unterschiedliche Längen vorgehalten werden. Die Wickelkörper lassen sich leicht zusammenbauen, was kurz vor ihrer Bewicklung geschenen kann, so daß nur sehr wenig Platz für die Lagerhaltung im Gegensatz zur Bereitstellung einstückiger Wickelkörper benötigt wird.The transformer / choke according to the invention allows the construction of transformers with different powers using uniform flanges; Different lengths only have to be provided for the size of the respective transformer / choke, by means of which the flanges are assembled to form bobbins. The bobbins can be easily assembled, which can happen shortly before they are wound, so that very little space is required for storage, in contrast to the provision of one-piece bobbins.
Claims (16)
- Transformer or choke having a winding body which outwardly accommodates the winding/windings and inwardly accommodates the central webs of at least one E-shaped core (FK11 to FK23) and which consists of two flanges (F1, F2) and at least two rectangular plates (P1, P2) which are between the latter and perpendicular thereto and wherein the central web (MS) of the core engages between the plates (P1, P2) from the side and the outer webs (AS) of the core are laid from the side about the winding/windings of the transformer or the choke surrounding the plates and the flanges of the winding body in one or more layers, characterised in that separate plates (P1, P2) and separate flanges (F1, F2) are provided, with the plates being held between the flanges in a force-locking and/or form-locking manner as they engage at least partly in corresponding recesses (A) on the inside of the flanges.
- Transformer or choke according to claim 1, characterised in that the length of the plates (P1, P2) which determine the distance between the flanges (F1, F2) can be selected using a given grid in order to construct transformers/chokes of different outputs.
- Transformer or choke according to claim 1, characterised in that the core consists of E-shaped or E- and I-shaped laminations which cooperate in pairs.
- Transformer or choke according to claim 1, characterised in that the core consists of E-shaped or E- and I-shaped ferrites (FK11-FK13, FK21-FK23) of given thickness which cooperate in pairs and of which, if necessary, several are mounted side by side.
- Transformer or choke according to claim 4 or 2 and 4, characterised in that the thickness of the ferrites can be selected using a given grid which matches the grid pertaining to the plates.
- Transformer or choke according to claim 3, 4 or 5, characterised in that the laminations or the ferrites have different magnetic properties.
- Transformer or choke according to one of the claims 3 to 6, characterised in that the webs (MS, AS) of the laminations or of the ferrites are of different lengths.
- Transformer or choke according to one of the claims 3 to 7, characterised in that the laminatione or the ferrites are bonded together.
- Transformer or choke according to claim 1, characterised in that the flanges (F1, F2) are formed as injection-moulded plastics portions.
- Transformer or choke according to claim 1, characterised in that the plates (P1, P2) consist of a fabric-base laminate or paper-base laminate.
- Transformer or choke according to claim 1, 9 or 10, characterised in that at least one layer of an insulating tape is arranged between the winding body and the winding/the windings.
- Transformer or choke according to claim 9, characterised in that the flanges (F1, F2) are provided with angular pieces (W11, W12, W21, W22) for installation of the transformer/the choke.
- Transformer or choke according to claim 9 or 12, characterised in that the flanges (F1, F2) are provided with recesses (B) for the accommodation, in a manner which is secure with respect to rotation, of hexagon head cap screws (S) which penetrate the flanges from the inside.
- Transformer or choke according to claim 13, characterized in that the flanges (F1, F2) have, on their insides, shallow troughs (M) for the accommodation of insulation plates (IP) which cover the screw heads of the hexagon head cap screws (S).
- Transformer or choke according to claim 13 or 14, characterised in that the flanges (F1, F2) have elevations (D) and the insulation plates (IP) have aligned recesses (C) for fixing the insulation plates on the flanges.
- Transformer or choke according to claim 1, 9, 12, 14, 14 (sic) or 15, characterised in that the flanges (F1, F2) are provided with recesses for bringing the winding terminals out of the winding body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9213190U DE9213190U1 (en) | 1992-09-28 | 1992-09-28 | Transformer or choke |
| DE9213190U | 1992-09-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0590741A1 EP0590741A1 (en) | 1994-04-06 |
| EP0590741B1 true EP0590741B1 (en) | 1996-04-03 |
Family
ID=6884332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93250221A Expired - Lifetime EP0590741B1 (en) | 1992-09-28 | 1993-08-05 | Transformer or choke |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0590741B1 (en) |
| AT (1) | ATE136393T1 (en) |
| DE (2) | DE9213190U1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19638957A1 (en) * | 1996-09-12 | 1998-03-26 | Siemens Ag | Coil former for transformer or choke coil |
| DE19641387A1 (en) * | 1996-09-27 | 1998-04-09 | Siemens Ag | Coil former for transformer or choke coil |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29913485U1 (en) * | 1999-08-02 | 2000-12-07 | Tridonic Bauelemente Ges.M.B.H., Dornbirn | Variable inductance coil |
| US8766758B2 (en) * | 2011-08-18 | 2014-07-01 | Solid State Controls, LLC | High-frequency transformer |
| DE102014107829B4 (en) * | 2014-06-04 | 2020-07-30 | Michael Riedel Transformatorenbau Gmbh | Inductance and manufacturing processes therefor and modular system |
| EP3054465A1 (en) * | 2015-02-05 | 2016-08-10 | ABB Technology AG | Passive low-pass filter and current limiter with a passive low-pass filter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1481190A (en) * | 1921-05-31 | 1924-01-15 | Holtzer Cabot Electric Co | Spool |
| US2428826A (en) * | 1944-10-27 | 1947-10-14 | Shure Bros | Coil and support construction |
| FR1021257A (en) * | 1950-07-03 | 1953-02-17 | Improvements to transformer carcasses | |
| DE1255797B (en) * | 1962-01-10 | 1967-12-07 | Lloyd Dynamo Werke G M B H | Transformer with comb-like winding support bodies |
| NL7401806A (en) * | 1974-02-09 | 1975-08-12 | Philips Nv | INDUCTIVE STABILIZATION BALLAST FOR A GAS VAPOR DISCHARGE LAMP. |
| US4668930A (en) * | 1985-10-21 | 1987-05-26 | Webster Electric Company, Inc. | Transformer coil construction |
-
1992
- 1992-09-28 DE DE9213190U patent/DE9213190U1/en not_active Expired - Lifetime
-
1993
- 1993-08-05 AT AT93250221T patent/ATE136393T1/en not_active IP Right Cessation
- 1993-08-05 EP EP93250221A patent/EP0590741B1/en not_active Expired - Lifetime
- 1993-08-05 DE DE59302100T patent/DE59302100D1/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19638957A1 (en) * | 1996-09-12 | 1998-03-26 | Siemens Ag | Coil former for transformer or choke coil |
| DE19638957C2 (en) * | 1996-09-12 | 1999-05-27 | Siemens Ag | Winding body for a transformer or a choke |
| DE19641387A1 (en) * | 1996-09-27 | 1998-04-09 | Siemens Ag | Coil former for transformer or choke coil |
| DE19641387C2 (en) * | 1996-09-27 | 2000-09-07 | Siemens Ag | Winding body for a transformer or a choke |
Also Published As
| Publication number | Publication date |
|---|---|
| DE9213190U1 (en) | 1992-11-26 |
| DE59302100D1 (en) | 1996-05-09 |
| EP0590741A1 (en) | 1994-04-06 |
| ATE136393T1 (en) | 1996-04-15 |
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