EP0757364A2 - Transformateur - Google Patents

Transformateur Download PDF

Info

Publication number
EP0757364A2
EP0757364A2 EP96112174A EP96112174A EP0757364A2 EP 0757364 A2 EP0757364 A2 EP 0757364A2 EP 96112174 A EP96112174 A EP 96112174A EP 96112174 A EP96112174 A EP 96112174A EP 0757364 A2 EP0757364 A2 EP 0757364A2
Authority
EP
European Patent Office
Prior art keywords
spacer
air gap
thickness
poles
transformer according
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.)
Granted
Application number
EP96112174A
Other languages
German (de)
English (en)
Other versions
EP0757364B1 (fr
EP0757364A3 (fr
Inventor
Walter Goseberg
Rolf Heidrich
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.)
Deutsche Thomson Brandt GmbH
Original Assignee
Deutsche Thomson Brandt GmbH
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 Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH
Publication of EP0757364A2 publication Critical patent/EP0757364A2/fr
Publication of EP0757364A3 publication Critical patent/EP0757364A3/fr
Application granted granted Critical
Publication of EP0757364B1 publication Critical patent/EP0757364B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps
    • 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

Definitions

  • the invention relates to a transformer according to the preamble of claim 1 and a method for adjusting the air gap of a transformer according to the preamble of claim 9.
  • a high-voltage transformer in a television receiver for the line deflection and the generation of the anode voltage of the picture tube requires a certain inductance of the windings.
  • the inductance is set by the width of an air gap formed between the poles of a two-part coil core.
  • An air gap here means a gap between the poles in which there is a medium with a relative permeability constant similar to air. So it does not have to be air itself, but can also be a plastic or non-ferromagnetic metal.
  • a film or a material with plastic properties has been arranged between the poles of a two-part coil core.
  • the appropriate thickness had to be selected and used from a set of films of different thicknesses. If a plastic material was used, this was inserted between the poles of the coil core and compressed under pressure on the parts of the coil core until the desired inductance of the coil was reached.
  • the invention has for its object to improve a transformer of the type mentioned in such a way that a simple, also feasible by a manipulator tuning the width of the air gap of the transformer is made possible and to provide a method for adjusting the air gap of a transformer that is quick, easy and can be carried out accurately and with the help of a manipulator.
  • the transformer according to the invention it is neither necessary to keep different spacers available, nor is a pressing device with which a spacer is compressed to the desired size. Rather, a single spacer is sufficient, in which the different thickness ranges are placed or selected so that the poles of the parts of the coil core are kept at the required distance and the desired dimension of the air gap results.
  • the spacer is so designed that from the outset it has the entire possible thickness range for optimal coordination due to its constructive design.
  • the thickness ranges can be graded or can merge seamlessly into areas of different thickness.
  • the stepped version only a gradual coordination is possible, but the individual areas offer a larger, flat system for the poles.
  • a stepless design enables very fine tuning.
  • the spacer body can be displaceable relative to the poles, so that the regions specifying the gap width lie between the poles, while the thicker regions lie outside.
  • the spacer itself is not changed, so that it is also possible to misalign in the direction of one small air gap to cause a correction to larger widths of the air gap.
  • the spacer protrudes more or less to the outside when a small air gap is set, which may undesirably increase the space requirement.
  • the spacer body can be arranged stationary to the poles and the areas of different thickness are removed starting with the thickest areas in descending thickness. Protruding areas can be avoided by this measure, but adjustment is only possible in one direction to smaller thicknesses.
  • the spacer body forms a tongue extending radially from the coil body.
  • the tongue is already fixed at the point at which the air gap of the coil core is formed.
  • the spacer body can also form an integral part of the coil body. This allows the bobbin to be moved together with the spacer in one operation, e.g. by injection molding, which reduces the production cost.
  • a thickness range of the spacer body is started which is significantly larger than a thickness determined in experiments for a desired adjustment.
  • the target value or a value can be set within a predetermined tolerance range of the target value.
  • the adjustment can be carried out in such a way that thickness ranges of the spacer are successively removed in descending thickness.
  • the transformer shown in FIGS. 1 and 2 consists of a coil body 1 with windings 2 arranged thereon and a two-part coil core 3 and 4.
  • One part 3 of the coil core is tilted relative to the other part 4 and touches it at a contact point 5.
  • the Point of contact 5 simultaneously forms the pivot point or a hinge about which part 3 is pivoted relative to part 4 when the air gap is set.
  • Ends of parts 3 and 4 of the coil core form poles 6 and 7 and 13 and 14, between which an air gap 8 and a further air gap 15 are formed.
  • the width of the air gap 8 is predetermined by a spacer 9. This also automatically results in the width of the air gap 15, the width of which is changed in the same direction as the width of the air gap 8. Since the individual air gaps 8 and 15 are in series with respect to the magnetic flux, they can also be viewed physically as a common, somewhat larger air gap.
  • the spacer 9 forms an integral part of the coil former 1 and projects radially outwards. As the enlarged detailed illustration of the spacer 9 in FIG. 3 shows, the spacer has regions of different thicknesses 10a, 10b, 10c, 10d ... between which predetermined breaking points 11a, 11b, 11c, 11d ... are arranged. By removing one or more thickness ranges 10a, 10b, 10c, 10d of the Spacer 9 can be given a suitable thickness range to which the poles 6 and 7 of the two parts of the coil core can be applied. The final position of parts 3 and 4 of the coil core can be fixed by gluing or by a clamping element 12.
  • the procedure for setting an air gap 8 is as follows. First of all, starting with a thickness range of the spacer 9 which is greater than a thickness determined in preliminary tests for the desired tuning, e.g. with the largest thickness range 10a of the spacer 9, the inductance of one of the windings 2 is measured. If the measured inductance lies outside a predetermined tolerance range of a target value, the thickness range 10a is removed in a next step by breaking off at the predetermined breaking point 11a. If the measured inductance is still outside the tolerance range of the target value, the thickness range 10b is removed in a further step.
  • the tuning is then finished and the position of parts 3 and 4 of the coil core can be finally fixed.
  • the tuning can be carried out in a simple manner by means of a manipulator which gradually removes the unnecessary thickness ranges of the spacer 9 and presses the parts 3 and 4 of the coil core against the remaining largest thickness range of the spacer. A very fast, targeted process of the coordination is possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)
EP96112174A 1995-08-01 1996-07-27 Transformateur Expired - Lifetime EP0757364B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19528185 1995-08-01
DE19528185A DE19528185A1 (de) 1995-08-01 1995-08-01 Transformator

Publications (3)

Publication Number Publication Date
EP0757364A2 true EP0757364A2 (fr) 1997-02-05
EP0757364A3 EP0757364A3 (fr) 1997-03-26
EP0757364B1 EP0757364B1 (fr) 2000-05-17

Family

ID=7768381

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96112174A Expired - Lifetime EP0757364B1 (fr) 1995-08-01 1996-07-27 Transformateur

Country Status (2)

Country Link
EP (1) EP0757364B1 (fr)
DE (2) DE19528185A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001086667A1 (fr) * 2000-05-11 2001-11-15 Canterprise Limited Transformateur basse frequence a noyau partiel
EP1540675A4 (fr) * 2002-09-17 2009-11-11 Pulse Eng Inc Dispositif et procede d'inductance controlee
CN102306533A (zh) * 2011-05-20 2012-01-04 中国科学院长春光学精密机械与物理研究所 一种大功率可调电感
WO2022038466A1 (fr) * 2020-08-20 2022-02-24 Bruker Biospin Gmbh Système de réglage d'angle d'inclinaison relatif pour composants magnétiques
EP4213360A3 (fr) * 2018-04-26 2023-10-04 Midea Group Co., Ltd. Transformateur électronique et appareil de cuisson à micro-ondes

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE733783C (de) * 1936-08-18 1943-04-02 Emil Koncar Dr Ing Transformator oder Drosselspule mit abgeflachter Stromspannungs-Kennlinie
DE1013695B (de) * 1952-06-27 1957-08-14 Siemens Ag Anordnung zur Regelung der Zeilenbreite in Fernsehempfaengern
DE2424131C3 (de) * 1973-05-18 1979-05-03 Hitachi Metals, Ltd., Tokio Drossel
DE2718274A1 (de) * 1977-04-25 1978-10-26 Vogt Gmbh & Co Kg Verfahren zur herstellung definierter luftspalte in magnetischen kreisen
DE2753709A1 (de) * 1977-12-02 1979-06-07 Blum Eisen & Metallind Aus blechen zu bildendes paket fuer elektrische maschinen, wie transformatoren, drosselspulen, zuendspulen, elektromotore, generatoren o.dgl.
DE2836401C2 (de) * 1978-08-19 1983-09-08 Fa. Hermann Schwabe, 7067 Urbach Streufeldtransformator oder Drossel, insbesondere als Vorschaltgerät für Gasentladungslampen
JPS5574111A (en) * 1978-11-29 1980-06-04 Hitachi Ltd Transformer
DE3008598A1 (de) * 1980-03-06 1981-10-08 Bruno 8550 Forchheim Waasner Magnetkern fuer eine drossel
DE3017368A1 (de) * 1980-05-07 1981-11-12 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Zeilentransformator fuer einen fernsehempfaenger
DE3039509A1 (de) * 1980-10-20 1982-05-19 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Als induktivitaet wirkendes bauteil, insbesondere transduktor oder zeilentrafo fuer einen fernsehempfaenger
NL8501994A (nl) * 1985-07-11 1987-02-02 Philips Nv Inductieve inrichting bevattende een ferromagnetische kern met een luchtspleet.
FR2591024B1 (fr) * 1985-12-04 1988-01-08 Orega Electro Mecanique Circuit magnetique a faible champ magnetique rayonne, en particulier pour un transformateur haute tension alimentant un tube cathodique
DE3605406A1 (de) * 1986-02-20 1987-08-27 Thomson Brandt Gmbh Schaltnetzteil fuer fernsehempfaenger
US4980794A (en) * 1987-02-19 1990-12-25 Westinghouse Electric Corp. Electromagnetic contactor with lightweight wide range current transducer with sintered powdered metal core
FR2621167B1 (fr) * 1987-09-25 1994-05-20 Orega Electronique Mecanique Procede de reglage automatique de self-inductance d'elements bobines comportant un circuit magnetique a entrefer ajustable
DE8807838U1 (de) * 1988-06-16 1988-09-22 Ceag Licht- Und Stromversorgungstechnik Gmbh, 4770 Soest Kern für einen Transformator
JPH0543455Y2 (fr) * 1989-05-11 1993-11-02
CA2096358A1 (fr) * 1992-07-02 1994-01-03 Apurba Roy Appareil a champ magnetique partiel

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001086667A1 (fr) * 2000-05-11 2001-11-15 Canterprise Limited Transformateur basse frequence a noyau partiel
EP1540675A4 (fr) * 2002-09-17 2009-11-11 Pulse Eng Inc Dispositif et procede d'inductance controlee
CN102306533A (zh) * 2011-05-20 2012-01-04 中国科学院长春光学精密机械与物理研究所 一种大功率可调电感
EP4213360A3 (fr) * 2018-04-26 2023-10-04 Midea Group Co., Ltd. Transformateur électronique et appareil de cuisson à micro-ondes
US12027987B2 (en) 2018-04-26 2024-07-02 Guangdong Midea Kitchen Appliances Manufacturing Co., Ltd. Electronic transformer and a microwave cooking appliance
WO2022038466A1 (fr) * 2020-08-20 2022-02-24 Bruker Biospin Gmbh Système de réglage d'angle d'inclinaison relatif pour composants magnétiques
US11289255B2 (en) 2020-08-20 2022-03-29 Bruker Biospin Gmbh Relative tilt angle adjustment system for magnetic components

Also Published As

Publication number Publication date
EP0757364B1 (fr) 2000-05-17
EP0757364A3 (fr) 1997-03-26
DE19528185A1 (de) 1997-02-06
DE59605224D1 (de) 2000-06-21

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