EP0096807B1 - Electrical transformer - Google Patents
Electrical transformer Download PDFInfo
- Publication number
- EP0096807B1 EP0096807B1 EP83105461A EP83105461A EP0096807B1 EP 0096807 B1 EP0096807 B1 EP 0096807B1 EP 83105461 A EP83105461 A EP 83105461A EP 83105461 A EP83105461 A EP 83105461A EP 0096807 B1 EP0096807 B1 EP 0096807B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- winding
- carrier
- section
- flange
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F19/00—Fixed transformers or mutual inductances of the signal type
Definitions
- the invention relates to an electrical transformer with a magnetizable core, in particular ferrite core, and with at least two cylindrical insulating material winding carriers of different cross-section pushed onto the core and possibly divided into winding chambers, which are plugged into one another and are galvanically separated and wound with the primary and secondary windings.
- a transformer of this type shows e.g. the FR-A-2457000. This is a high-voltage transformer with U-cores and with two connections on separate sides for the primary and secondary windings, which are cast into a cup to achieve high-voltage strength.
- GB-A-2039156 also includes a high-voltage transformer, which largely corresponds to the high-voltage transformer according to FR-A-2457000.
- the problem with this high-voltage transformer is the way in which the connections are led out, which are all on one side, but essei; the pins are at an extremely large, space-consuming distance from each other - fear of voltage flashovers.
- ferrite material or metal alloy is advantageously used as the material for the core in the above-mentioned transformer for magnetic and economic reasons, it being possible for these two materials to overlap in the area of application.
- the transformer is of particular importance in that it has the above-mentioned galvanic isolation of primary and secondary windings by inductive coupling, an adjustment of the output resistance of the voltage source to the input resistance of the load is achieved by correct choice of the number of turns, and at the same time voltage and current translations good efficiency can be achieved.
- the electrical insulation and the primary and secondary windings from one another and the electrical isolation between the primary and secondary windings must be accomplished by the complex and, in particular, time-consuming insertion of insulating foils between the individual windings.
- the windings on both ends of the winding carriers must be moved, which results in unused winding space.
- the present invention is based on the object of designing a transformer of the type mentioned at the outset, which can be wound fully automatically by means of an insulating film without the winding insulation and electrical isolation required hitherto and nevertheless complies with VDE regulation 0860.
- the transformer should have the possibility of variable nesting of the windings; i.e. offer the possibility of using a winding technique that varies from case to case, since this is the only way to achieve optimal coupling and low leakage inductance.
- the invention proposes an electrical transformer of the type mentioned, in which, according to the invention, the winding carrier of the smallest cross-section has an integrally formed carrier flange with contact pin connection strips for the primary and secondary windings arranged on opposite sides of the carrier flange, as a magnetizable core E-core halves are provided, one E-core half of which engages with its outer legs through openings in the carrier flange and the middle slugs of the two E-core halves are immersed in the enveloped space of the winding carrier of the smallest cross-section.
- the winding carriers which preferably have an annular cross section, can each be divided into winding chambers, the number and chamber height of which are selected to match the desired nesting of the windings.
- the potential separation of the primary and secondary windings and the electrical insulation of the individual windings from one another is thus ensured by the thickness of the winding support wall or by the height and thickness of the chamber partition walls.
- Ring flanges are preferably formed on the end faces of the winding carrier facing away from the carrier flange, such that the flange outer diameter of the winding carrier of smaller cross-section corresponds approximately to the inside diameter of the next following winding carrier of larger cross-section.
- the height and thickness of the winding carrier flanges and the spatially separate connection of the primary and secondary windings to the contact pins of the opposite contact terminal strips also ensure that the necessary creepage distance is maintained.
- the optional change in the number and height of the chambers of the individual winding carriers also enables an optimal adaptation of the coupling to the individual application.
- the fully automatic winding can be carried out without any problems.
- a further simplified automatic winding is possible if the winding carriers attached to the winding carrier with the smallest cross section are also in several parts.
- the invention is explained in more detail below using an exemplary embodiment.
- the single figure shows a winding carrier equipped with a carrier flange and its associated E-core halves in a partially exploded, perspective and partly broken view. For better illustration, the illustration of the windings has been omitted in the figure.
- a support flange 11 is integrally formed or attached to the front end of the winding support 9 facing away from the flange 17 and has contact terminal strips 12, 13 for contact pins 14 which are separated into individual elements.
- the partition wall 24 and the carrier flange 11 are provided with open-edge recesses 26, which are used for the positionally secure supply of the winding ends 25 to the contact pins 14.
- the carrier flange 11 has openings 15 in its area lying between the contact connection parts 12, 13; 16 through which an E core half 2 is guided with its outer legs 6, 7.
- This and the second E-core half 1 dip in the assembled state with their central slugs 8 and 4, respectively, into the interior of the winding support enclosed by the winding support 9, so that the mutually facing end faces of the legs 3, 6 and 5, 7 lie one on top of the other and the end faces the central slugs 4, 8 are spaced apart to form an air gap.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
- Insulated Conductors (AREA)
- Regulation Of General Use Transformers (AREA)
- Led Devices (AREA)
- Coils Of Transformers For General Uses (AREA)
- Details Of Television Scanning (AREA)
- Organic Insulating Materials (AREA)
Abstract
Description
Die Erfindung betrifft einen elektrischen Übertrager mit einem magnetisierbaren Kern, insbesondere Ferritkern, und mit mindestens zwei auf den Kern aufgeschobenen, gegebenenfalls in Wickelkammern aufgeteilten zylindrischen lsolierstoff-Wickeltragem unterschiedlichen Querschnitts, die ineinander gesteckt und galvanisch getrennt mit den Primär- bzw. Sekundärwicklungen bewickelt sind.The invention relates to an electrical transformer with a magnetizable core, in particular ferrite core, and with at least two cylindrical insulating material winding carriers of different cross-section pushed onto the core and possibly divided into winding chambers, which are plugged into one another and are galvanically separated and wound with the primary and secondary windings.
Einen Übertrager dieser Art zeigt z.B. die FR-A-2457000. Hierbei handelt es sich um einen Hochspannung-Trafo mit U-Kernen und mit zwei auf getrennten Seiten herausgeführten Anschlüssen für die Primär- und Sekundärwicklungen, die zu dem zur Erzielung der Hochspannungsfestigkeit in einen Becher eingegossen sind.A transformer of this type shows e.g. the FR-A-2457000. This is a high-voltage transformer with U-cores and with two connections on separate sides for the primary and secondary windings, which are cast into a cup to achieve high-voltage strength.
Auch die GB-A-2039156 beinhaltet einen Hochspannungstrafo, der in wesentlichen Teilen mit dem Hochspannungs-Trafo nach der FR-A-2457000 übereinstimmt.GB-A-2039156 also includes a high-voltage transformer, which largely corresponds to the high-voltage transformer according to FR-A-2457000.
Hinsichtlich der Spannungsfestigkeit problematisch ist bei diesem Hochspannungs- Trafo die Art der Herausführung der Anschlüsse, die zwar sämtlich auf einer Seite liegen, jedoch essei denn; die Stifte befinden sich in einem äußerst großen, platzraubenden Abstand voneinander - Spannungsüberschläge befürchten lassen.With regard to the dielectric strength, the problem with this high-voltage transformer is the way in which the connections are led out, which are all on one side, but essei; the pins are at an extremely large, space-consuming distance from each other - fear of voltage flashovers.
Auch ist die exakte koaxiale Ausrichtung der Spulenkörper dieses Trafos zueinander nicht gewährleistet, da der eine der beiden Spulenkörper nur im Sockelbereich auf den anderen Spulenkörper leicht aufgesteckt ist und daher die Gefahr besteht, daß der aufgesteckte Spulenkörper zum anderen Spulenkörper gekippt bzw. im Winkel zu dessen Längsmittelachse aufgesteckt wird. Die Einhaltung der erforderlichen Isolationsabstände ist damit nicht gewährleistet.Also, the exact coaxial alignment of the bobbins of this transformer to one another is not guaranteed, since one of the two bobbins is only slightly plugged onto the other bobbin in the base area and there is therefore a risk that the plugged bobbin will tilt or at an angle to the other bobbin Longitudinal central axis is plugged on. This does not guarantee compliance with the required insulation distances.
Je nach Frequenzgebiet wird bei dem eingangs genannten Übertrager aus magnetischen und wirtschaftlichen Gründen vorteilhafterweise Ferritmaterial oder Metallegierung als Werkstoff für den Kern eingesetzt, wobei sich diese beiden Werkstoffe im Anwendungsbereich überlappen können. Eine besondere Bedeutung kommt dem Übertrager dadurch zu, daß er durch induktive Kopplung die vorstehend erwähnte galvanische Trennung von Primär- und Sekundärwicklungen aufweist, durch richtige Wahl des Windungszahlverhältnisses eine Anpassung des Ausgangswiderstandes der Spannungsquelle zum Eingangswiderstand der Last erreicht wird und gleichzeitig Spannungs- und Stromübersetzungen bei gutem Wirkungsgrad erzielt werden.Depending on the frequency range, ferrite material or metal alloy is advantageously used as the material for the core in the above-mentioned transformer for magnetic and economic reasons, it being possible for these two materials to overlap in the area of application. The transformer is of particular importance in that it has the above-mentioned galvanic isolation of primary and secondary windings by inductive coupling, an adjustment of the output resistance of the voltage source to the input resistance of the load is achieved by correct choice of the number of turns, and at the same time voltage and current translations good efficiency can be achieved.
Bei der Fertigung der bisher bekannten elektrischen Übertrager vorstehender Art muß die elektrische Isolierung und der Primär- und Sekundärwicklung gegeneinander und die Potentialtrennung zwischen den Primär- und Sekundärwicklungen durch das aufwendige und insbesondere zeitraubende Einlegen von Isolierfolien zwischen die einzelnen Wicklungen bewerkstelligt werden. Zusätzlich müssen, um den Forderungen des VDE hinsichtlich ausreichender Kriechstrecken zwischen den Primär- und Sekundärwicklungen zu genügen, die Wicklungen an beiden Stirnenden der Wickelträger hingerückt werden was ungenutzten Wickelraum zur Folge hat.In the manufacture of the previously known electrical transformers of the above type, the electrical insulation and the primary and secondary windings from one another and the electrical isolation between the primary and secondary windings must be accomplished by the complex and, in particular, time-consuming insertion of insulating foils between the individual windings. In addition, in order to meet the requirements of the VDE regarding sufficient creepage distances between the primary and secondary windings, the windings on both ends of the winding carriers must be moved, which results in unused winding space.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Übertrager der eingangs genannten Art zu gestalten, der ohne die bisher erforderliche Wicklungsisolation und Potentialtrennung mittels Isolierfolie vollautomatisch bewickelbar ist und trotzdem der VDE-Bestimmung 0860 entspricht. Darüberhinaus soll der Übertrager die Möglichkeit variabler Verschachtelung der Wicklungen; d.h. die Möglichkeit der Anwendung einer von Fall zu Fall variierenden Wickeltechnik bieten, da nur so eine letztlich optimale Verkopplung und niedrige Streuinduktivität erhalten werden.The present invention is based on the object of designing a transformer of the type mentioned at the outset, which can be wound fully automatically by means of an insulating film without the winding insulation and electrical isolation required hitherto and nevertheless complies with VDE regulation 0860. In addition, the transformer should have the possibility of variable nesting of the windings; i.e. offer the possibility of using a winding technique that varies from case to case, since this is the only way to achieve optimal coupling and low leakage inductance.
Zur Lösung dieser Aufgabe schlägt die Erfindung einen elektrischen Übertrager der eingangs genannten Art vor, bei dem erfindungsgemäß der Wickelträger kleinsten Querschnitts an seinem einem Stirnende einen einstückig angeformten Trägerflansch mit auf gegenüberliegenden Seiten des Trägerflansches angeordneten Kontaktstiftanschlußleisten für die Primär- und Sekundärwicklungen aufweist, als magnetisierbarer Kern E-Kernhälften vorgesehen sind, deren eine E-Kernhälfte mit ihren äußeren Schenkeln durch Durchbrechungen im Trägerflansch greift und die Mittelbutzen der beiden E-Kernhälften in den umhüllten Raum des Wickelträgers kleinsten Querschnitts eintauchen.To achieve this object, the invention proposes an electrical transformer of the type mentioned, in which, according to the invention, the winding carrier of the smallest cross-section has an integrally formed carrier flange with contact pin connection strips for the primary and secondary windings arranged on opposite sides of the carrier flange, as a magnetizable core E-core halves are provided, one E-core half of which engages with its outer legs through openings in the carrier flange and the middle slugs of the two E-core halves are immersed in the enveloped space of the winding carrier of the smallest cross-section.
Die Wickelträger, die vorzugsweise kreisringförmigen Querschnitt aufweisen, können dabei jeweils in Wickelkammern aufgeteilt sein, deren Anzahl und Kammerhöhe in Anpassung an die gewünschte Verschachtelung der Wicklungen gewählt ist. Die Potentialtrennung der Primär- und Sekundärwicklungen und die elektrische Isolation der einzelnen Wicklungen gegeneinander ist so durch die Dicke der Wickelträger-Wandung bzw. durch die Höhe und Dicke der Kammertrennwände gewährleistet.The winding carriers, which preferably have an annular cross section, can each be divided into winding chambers, the number and chamber height of which are selected to match the desired nesting of the windings. The potential separation of the primary and secondary windings and the electrical insulation of the individual windings from one another is thus ensured by the thickness of the winding support wall or by the height and thickness of the chamber partition walls.
An die vom Trägerflansch abgekehrten Stirnseiten der Wickelträger sind dabei vorzugsweise Ringflansche angeformt, derart, daß jeweils der Flanschaußendurchmesser des Wickelträgers kleineren Querschnitts etwa dem Innendruchmesser des nächstfolgenden Wickelträgers größeren Querschnitts entspricht. Durch die Höhe und Dicke der Wickelträger-Flansche und durch den räumlich getrennten Anschluß der Primär- und Sekundärwicklungen an die Kontaktstifte der jeweils gegenüberliegenden Kontaktanschlußleisten, ist auch die Einhaltung der notwendigen Kriechstrecke gewährleistet. Die wahlweise Änderung der Anzahl und Höhe der Kammern der einzelnen Wickelträger ermöglicht darüberhinaus eine optimale Anpassung der Verkopplung an den einzelnen Anwendungsfall.Ring flanges are preferably formed on the end faces of the winding carrier facing away from the carrier flange, such that the flange outer diameter of the winding carrier of smaller cross-section corresponds approximately to the inside diameter of the next following winding carrier of larger cross-section. The height and thickness of the winding carrier flanges and the spatially separate connection of the primary and secondary windings to the contact pins of the opposite contact terminal strips also ensure that the necessary creepage distance is maintained. The optional change in the number and height of the chambers of the individual winding carriers also enables an optimal adaptation of the coupling to the individual application.
Durch die Aufteilung des Wickelträgers in mehrere Wickelträger ist die vollautomatische Bewicklung problemlos durchführbar. Eine weiter-vereinfachte automatische Bewicklung ist möglich, wenn auch die auf den Wickelträger kleinsten Querschnitts aufgesteckten Wickelträger zusätzlich mehrteilig sind.Due to the division of the winding carrier into several winding carriers, the fully automatic winding can be carried out without any problems. A further simplified automatic winding is possible if the winding carriers attached to the winding carrier with the smallest cross section are also in several parts.
Die Erfindung wird nachstehend anhand eines Ausführungsbeispieles näher erläutert. Die einzige Figur zeigt dabei einen mit einem Trägerflansch ausgerüsteten Wickelträger und seine zugehörigen E-Kernhälften in teilweise auseinandergezogener, perspektivischer und teils gebrochener Ansicht. Zur besseren Veranschaulichung wurde in der Figur auf die Darstellung der Wicklungen verzichtet.The invention is explained in more detail below using an exemplary embodiment. The single figure shows a winding carrier equipped with a carrier flange and its associated E-core halves in a partially exploded, perspective and partly broken view. For better illustration, the illustration of the windings has been omitted in the figure.
Mit 9, 10 sind ineinandergesteckte zylindrische Wickelträger kreisringförmigen Querschnitts bezeichnet, die Flansche 17,20 aufweisen und durch Trennwände 18, 19 bzw. 21, 22, 23, 24 in Kammern aufgeteilt sind. An das vom Flansch 17 abgekehrte Stirnende des Wickelträgers 9 ist ein Trägerflansch 11 einstückig angeformt oder aufgesteckt, der in Einzelelemente aufgetrennte Kontaktanschlußleisten 12, 13 für Kontaktstifte 14 besitzt. Im gezeigten Ausführungsbeispiel ist die Trennwand 24 und der Trägerflansch 11 mit randoffenen Ausnehmungen 26 ausgestattet, die zur lagegesicherten Zuführung der Wickelenden 25 zu den Kontaktstiften 14 dienen.9, 10 are nested cylindrical winding carriers of circular cross-section, which have
Der Trägerflansch 11 besitzt in seinem zwischen den Kontaktanschlußteilen 12, 13 liegenden Bereich Durchbrechungen 15; 16 durch welche eine E-Kernhälfte 2 mit ihren äußeren Schenkeln 6, 7 geführt ist. Diese und die zweite E-Kernhälfte 1 tauchen im montierten Zustand mit ihren Mittelbutzen 8 bzw. 4 in das vom Wickelträger 9 umschlossene Innere des Wickelträgers ein, so daß die einander zugekehrten Stirnflächen der Schenkel 3, 6 bzw. 5, 7 aufeinanderliegen und die Stirnflächen der Mittelbutzen 4, 8 unter Bildung eines Luftspalts zueinander beabstandet sind.The carrier flange 11 has
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83105461T ATE22502T1 (en) | 1982-06-11 | 1983-06-01 | ELECTRICAL TRANSMITTER. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823222027 DE3222027A1 (en) | 1982-06-11 | 1982-06-11 | ELECTRIC TRANSMITTER |
DE3222027 | 1982-06-11 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0096807A2 EP0096807A2 (en) | 1983-12-28 |
EP0096807A3 EP0096807A3 (en) | 1984-05-02 |
EP0096807B1 true EP0096807B1 (en) | 1986-09-24 |
Family
ID=6165845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83105461A Expired EP0096807B1 (en) | 1982-06-11 | 1983-06-01 | Electrical transformer |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0096807B1 (en) |
AT (1) | ATE22502T1 (en) |
DE (2) | DE3222027A1 (en) |
ES (1) | ES281210Y (en) |
FI (1) | FI74164C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3620306A1 (en) * | 1986-06-18 | 1987-12-23 | Siemens Ag | Electrical multi-chamber coil former |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8401185A (en) * | 1984-04-13 | 1985-11-01 | Philips Nv | TRANSFORMER WITH COAXIAL COILS. |
JPS63501610A (en) * | 1985-10-31 | 1988-06-16 | ザ・サウス・イ−スト・クイ−ンズランド・エレクトリシティ・ボ−ド | intermediate trip device |
AU599056B2 (en) * | 1985-10-31 | 1990-07-12 | South East Queensland Electricity Corporation | Intertripping system |
JPH01154488A (en) * | 1987-12-09 | 1989-06-16 | Toshiba Corp | Stepup transformer for microwave oven |
DE4120771A1 (en) * | 1991-06-24 | 1993-01-07 | Philips Patentverwaltung | TRANSFORMER WITH A SPOOL BODY MADE OF PLASTIC |
DE10106173C1 (en) * | 2001-02-10 | 2002-04-18 | Bosch Gmbh Robert | Arrangement for transferring energy/data between vehicle body and removable part has first core half with pin protruding into second core half, ring with spring pressing it against second half |
DE102008017314B4 (en) * | 2008-04-04 | 2015-10-29 | SUMIDA Components & Modules GmbH | Inductive component and electronic circuit for controlling a luminaire |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR617370A (en) * | 1925-06-12 | 1927-02-18 | Thomson Houston Comp Francaise | Improvements made to electrical transformers |
JPS6023591B2 (en) * | 1978-04-24 | 1985-06-08 | 株式会社日立製作所 | flyback transformer |
JPS5574111A (en) * | 1978-11-29 | 1980-06-04 | Hitachi Ltd | Transformer |
JPS55151307A (en) * | 1979-05-14 | 1980-11-25 | Victor Co Of Japan Ltd | Closed magnetic circuit device |
-
1982
- 1982-06-11 DE DE19823222027 patent/DE3222027A1/en not_active Withdrawn
-
1983
- 1983-06-01 DE DE8383105461T patent/DE3366418D1/en not_active Expired
- 1983-06-01 AT AT83105461T patent/ATE22502T1/en not_active IP Right Cessation
- 1983-06-01 EP EP83105461A patent/EP0096807B1/en not_active Expired
- 1983-06-10 FI FI832107A patent/FI74164C/en not_active IP Right Cessation
- 1983-06-10 ES ES1983281210U patent/ES281210Y/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3620306A1 (en) * | 1986-06-18 | 1987-12-23 | Siemens Ag | Electrical multi-chamber coil former |
Also Published As
Publication number | Publication date |
---|---|
DE3366418D1 (en) | 1986-10-30 |
EP0096807A2 (en) | 1983-12-28 |
DE3222027A1 (en) | 1983-12-15 |
FI74164C (en) | 1987-12-10 |
FI832107A0 (en) | 1983-06-10 |
ES281210Y (en) | 1985-10-16 |
ES281210U (en) | 1985-03-01 |
ATE22502T1 (en) | 1986-10-15 |
EP0096807A3 (en) | 1984-05-02 |
FI832107L (en) | 1983-12-12 |
FI74164B (en) | 1987-08-31 |
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