CN2299382Y - Resin pouring annular transformer - Google Patents
Resin pouring annular transformer Download PDFInfo
- Publication number
- CN2299382Y CN2299382Y CN 97238150 CN97238150U CN2299382Y CN 2299382 Y CN2299382 Y CN 2299382Y CN 97238150 CN97238150 CN 97238150 CN 97238150 U CN97238150 U CN 97238150U CN 2299382 Y CN2299382 Y CN 2299382Y
- Authority
- CN
- China
- Prior art keywords
- winding
- transformer
- metallic shield
- epoxy resin
- iron stamen
- 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 - Fee Related
Links
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model is used for pouring and sealing a metallic shield cover (2), a winding (3), a core rolling iron core (4) integrally through using epoxy resin (5) based on the existing annular transformer, the bottom surface of a central hole of the iron core is buried and provided with a screw nut (6) in advance, and a surface layer (1) is sprayed and coated with polyester paint. The utility model is used as a high-fidelity acoustic power source transformer and has the advantages that overload ability is strong, magnetism does not leak basically, and installation is convenient.
Description
The resin filled type toroidal transformer.Belong to transformer coil or winding at magnetic core, the fixing or installation on shell or other supports.Or genus prevents or reduces the influence of unwanted electric or magnetic.
The sound equipment power transformer that is used for high-fidelities such as CD, VCD, DVD, require leakage field few, disturb little.The toroidal transformer that uses can only satisfy general requirement at present.Toroidal transformer is that first and second winding is looped around on the volume core type iron stamen, and with the mylar insulation, the secondary winding outside shields with metal cap after insulating with mylar again between two windings.For easy for installation, volume heart iron stamen center-hole diameter is often greater than 50mm, also will be with a spill round iron sheet during installation, two rubber blankets, a long bolt is upper and lower stubborn, this toroidal transformer insulating properties, thermal diffusivity, anti-leakage field is all not very good, and particularly tired lock is installed.Notification number CN2249956Y discloses a kind of double hose iron stamen transformer, this transformer is enclosed in coil in the inner chamber with a pair of concentric tube circle unshakable in one's determination and upper and lower cover plate, encapsulated epoxy resin between shell and the iron stamen, and this transformer leakage field is few, loss is little, but complex structure.
The purpose of this utility model provides a kind of insulation well, and good heat dissipation is simple in structure, leakage field not substantially, easy-to-install toroidal transformer.
Solution of the present utility model is with metallic shield, winding, volume heart iron stamen, uses the epoxy resin integral embedding, gives in volume heart iron stamen centre bore bottom surface and buries the installation nut, and graphite powder is used in the spraying of transformer surface, and the polyester paint of iron oxide powder as filler is made superficial layer.
The utility model is owing to whole embedding, and the oxygen porosity is little, has optimized insulation, heat radiation, humidity resistance, and overload capacity is strong.Superficial layer has been because shield effectiveness has been strengthened in the intervention of filler, substantially leakage field not.Give the installation nut that buries, make installation very convenient.
Accompanying drawing 1 is a structural representation of the present utility model.
Toroidal transformer is a cylinder.Appearance is superficial layer (1), metallic shield (2) covers on winding (3) outside, winding (3) is looped around on the volume heart iron stamen (4), and metallic shield (2), winding (3), iron stamen (4) give and are embedded in iron stamen centre bore bottom surface with the whole embedding of epoxy resin (5), installation nut (6).
Enforcement of the present utility model is example with the transformer of 100W, keeping under the iron stamen cross section situation consistent with existing toroidal transformer, and iron stamen center-hole diameter 20mm, iron stamen material, winding reduces 25%, 3% respectively.Make radome with wire netting, the iron stamen rolls with the oriented electric sheet, and with the epoxy resin embedding that contains silica flour, superficial layer (1) spraying polyester paint, polyester paint be with graphite powder with radome (2), winding (3), iron stamen (4), the iron oxide powder as filler.The transformer execution mode of other power is the same, and after tested, a winding is to secondary winding and ground industrial frequency withstand voltage 2000～5000V, 5 minutes, leakage current≤1mA, no-load current≤5%.The maximum temperature rise 80K that allows, long-term work is not made moist under III level filthy environment.
Claims (3)
1, resin filled type toroidal transformer, first and second winding is looped around on the volume heart iron stamen, insulate with mylar, there is metallic shield the insulating barrier outside, it is characterized in that metallic shield (2), winding (3), volume heart iron stamen (4) the whole embedding of epoxy resin (5), volume heart iron stamen (4) centre bore bottom surface is given burying nut (6), transformer superficial layer (1) graphite spraying powder, the polyester paint of iron oxide powder as filler is installed.
2, resin filled type toroidal transformer according to claim 1 is characterized in that the material of metallic shield (2) is a wire netting.
3, resin filled type toroidal transformer according to claim 1 is characterized in that containing in the epoxy resin silica flour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97238150 CN2299382Y (en) | 1997-05-10 | 1997-05-10 | Resin pouring annular transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97238150 CN2299382Y (en) | 1997-05-10 | 1997-05-10 | Resin pouring annular transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2299382Y true CN2299382Y (en) | 1998-12-02 |
Family
ID=33948595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97238150 Expired - Fee Related CN2299382Y (en) | 1997-05-10 | 1997-05-10 | Resin pouring annular transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2299382Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101842860B (en) * | 2007-09-21 | 2014-04-30 | Abb技术有限公司 | Dry-type transformer with polymer shielding case and manufacturing method thereof |
| CN104051141A (en) * | 2014-07-08 | 2014-09-17 | 曹学良 | High-voltage insulating transformer and manufacturing method thereof |
| CN107331498A (en) * | 2016-04-28 | 2017-11-07 | 王大彦 | A kind of toroidal transformer of magnetic shielding cylinder embedding |
| CN110517871B (en) * | 2019-08-23 | 2024-06-04 | 无锡爱邦辐射技术有限公司 | Internal middle and external three-shielding transformer |
-
1997
- 1997-05-10 CN CN 97238150 patent/CN2299382Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101842860B (en) * | 2007-09-21 | 2014-04-30 | Abb技术有限公司 | Dry-type transformer with polymer shielding case and manufacturing method thereof |
| CN104051141A (en) * | 2014-07-08 | 2014-09-17 | 曹学良 | High-voltage insulating transformer and manufacturing method thereof |
| CN107331498A (en) * | 2016-04-28 | 2017-11-07 | 王大彦 | A kind of toroidal transformer of magnetic shielding cylinder embedding |
| CN110517871B (en) * | 2019-08-23 | 2024-06-04 | 无锡爱邦辐射技术有限公司 | Internal middle and external three-shielding transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |