EP0192307A1 - Transformator mit Luftspalt - Google Patents
Transformator mit Luftspalt Download PDFInfo
- Publication number
- EP0192307A1 EP0192307A1 EP86200234A EP86200234A EP0192307A1 EP 0192307 A1 EP0192307 A1 EP 0192307A1 EP 86200234 A EP86200234 A EP 86200234A EP 86200234 A EP86200234 A EP 86200234A EP 0192307 A1 EP0192307 A1 EP 0192307A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air gap
- gauze
- transformer
- core
- cement
- 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
Links
Images
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
Definitions
- the invention relates to a device comprising a ferromagnetic core in which there is provided at least one air gap which is filled with a non-ferromagnetic material comprising a spacer which is embedded in cement.
- a device is known from GB-A 1, 246,458.
- the spacer in the known device is formed by a quantity of hard grains, for example of glass, which are mixed with the cement. The diameter of the grains determines the width of the air gap.
- the object of the invention to propose a device of the kind set forth in which the glass grains are replaced by a spacer which is less expensive and easier to procure.
- the device in accordance with the invention is characterized in that the spacer consists of a plate made of gauze.
- Gauze is usually readily available at an attractive price because it is also manufactured for other purposes.
- a very suitable gauze is the kind which is customarily used for silk-screening.
- FIG. 2 is a detailed longitudinal sectional view of the air gap 7 together with the surrounding parts of the primary coil 3 and the core 1.
- the air gap 7 has a predetermined width d. This width equals the thickness of a gauze plate 9 which is situated in the air gap 7.
- the gauze is embedded in a layer of cement 11.
- the plate 9 which is drenched in the cement 11 is arranged between the two parts of the core which are subsequently pressed together and the cement is allowed to set, for example by heating.
- the diameter of the wires 13 constituting the gauze of the plate 9 then automatically determines the thickness d of the air gap without it being necessary to measure and adjust the spacing of the two part ofs the core during manufacture.
- the thickness d is slightly smaller than twice the diameter of the wires 13 because the wires 13 are slightly compressed at the points of contact.
- a very suitable type of gauze is the type which is customarily used for silk-screening, for example Estal Mono PE 275 which is made by Schweizerische Seidengazefabrik A.G., Thal.
Landscapes
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Developing Agents For Electrophotography (AREA)
- Printing Plates And Materials Therefor (AREA)
- Soft Magnetic Materials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8500463A NL8500463A (nl) | 1985-02-19 | 1985-02-19 | Transformator met luchtspleet. |
NL8500463 | 1985-02-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0192307A1 true EP0192307A1 (de) | 1986-08-27 |
EP0192307B1 EP0192307B1 (de) | 1989-06-07 |
Family
ID=19845550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19860200234 Expired EP0192307B1 (de) | 1985-02-19 | 1986-02-18 | Transformator mit Luftspalt |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0192307B1 (de) |
JP (1) | JPS61189608A (de) |
DE (2) | DE8603702U1 (de) |
NL (1) | NL8500463A (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5587694A (en) * | 1993-06-30 | 1996-12-24 | Matsushita Electric Industrial Co., Ltd. | Reactor with core gap spacers |
US5926946A (en) * | 1994-12-28 | 1999-07-27 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing reactor |
KR101132086B1 (ko) * | 2009-06-29 | 2012-04-02 | 울산대학교 산학협력단 | 세포 부착 및 세포 증식이 조절 가능한 임플란트 및 그의 제조방법 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3908224A1 (de) * | 1989-03-14 | 1990-09-20 | Vogt Electronic Ag | Kombinierte entstoerdrossel zur beseitigung symmetrischer und asymmetrischer stoerungen |
DE4228642A1 (de) * | 1992-08-28 | 1994-03-03 | Tridonic Bauelemente Gmbh Dorn | Verfahren zur Impedanz-Einstellung einer Drossel |
DE19833190A1 (de) * | 1998-07-23 | 2000-01-27 | Bayerische Motoren Werke Ag | Zündspule |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2494180A (en) * | 1946-04-06 | 1950-01-10 | Acme Electric Corp | Laminated reactor |
GB2039156A (en) * | 1978-11-29 | 1980-07-30 | Hitachi Ltd | Transformer |
FR2457000A1 (fr) * | 1979-05-14 | 1980-12-12 | Victor Company Of Japan | Dispositif a circuits magnetiques fermes |
-
1985
- 1985-02-19 NL NL8500463A patent/NL8500463A/nl not_active Application Discontinuation
-
1986
- 1986-02-12 DE DE19868603702 patent/DE8603702U1/de not_active Expired
- 1986-02-17 JP JP3101286A patent/JPS61189608A/ja active Pending
- 1986-02-18 DE DE8686200234T patent/DE3663868D1/de not_active Expired
- 1986-02-18 EP EP19860200234 patent/EP0192307B1/de not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2494180A (en) * | 1946-04-06 | 1950-01-10 | Acme Electric Corp | Laminated reactor |
GB2039156A (en) * | 1978-11-29 | 1980-07-30 | Hitachi Ltd | Transformer |
FR2457000A1 (fr) * | 1979-05-14 | 1980-12-12 | Victor Company Of Japan | Dispositif a circuits magnetiques fermes |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5587694A (en) * | 1993-06-30 | 1996-12-24 | Matsushita Electric Industrial Co., Ltd. | Reactor with core gap spacers |
US5926946A (en) * | 1994-12-28 | 1999-07-27 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing reactor |
KR101132086B1 (ko) * | 2009-06-29 | 2012-04-02 | 울산대학교 산학협력단 | 세포 부착 및 세포 증식이 조절 가능한 임플란트 및 그의 제조방법 |
Also Published As
Publication number | Publication date |
---|---|
JPS61189608A (ja) | 1986-08-23 |
DE3663868D1 (en) | 1989-07-13 |
EP0192307B1 (de) | 1989-06-07 |
NL8500463A (nl) | 1986-09-16 |
DE8603702U1 (de) | 1986-04-10 |
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