CN2503583Y - Screened toroidal transformer - Google Patents
Screened toroidal transformer Download PDFInfo
- Publication number
- CN2503583Y CN2503583Y CN 01259654 CN01259654U CN2503583Y CN 2503583 Y CN2503583 Y CN 2503583Y CN 01259654 CN01259654 CN 01259654 CN 01259654 U CN01259654 U CN 01259654U CN 2503583 Y CN2503583 Y CN 2503583Y
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- toroidal transformer
- transformer
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Abstract
The utility model relates to a shielding type ring transformer which comprises a circular iron core and a ring transformer with enamel covered conducting wire coil. The utility model is characterized in that the ring transformer also comprises a magnetic shielding packaged outer casing formed by magnetism separating and inducting material, a magnetism inducting material layer and / or a magnetism separating layer forming a leakage magnetic flux magnetism inducting loop are symmetrically arranged on the upper and the lower sides on the circular plane of the ring transformer successively or alternatively, and the material layers are separated by the insulating material. The shielding type ring transformer of the utility model can elementally eliminate the interference of the leakage magnetic flux of the computer protector to the picture and the text on the computer display.
Description
Technical field
The utility model relates to a kind of protected type toroidal transformer with good anti-leakage field function.
Background technology
Toroidal transformer is crucial branch or a kind in the transformer family, owing to it has the favor that characteristics such as volume is little, efficient is high, use is flexible obtain people, but, because of difficulty on its structure and the manufacturing process and the more high reason of cost, limited its widespread usage; But, must use it again at some special occasions.In recent years, the toroidal transformer that volume is little, efficient is high has just been used in the power amplification of stereo set.PPC-7810 ,-7811 serial computer protecting god that Beijing rel Deco skill Co., Ltd produces, because of being subjected to the restriction of interior space dimension, its inner power output transformer can only adopt toroidal transformer, and can not use the transformer of E shape iron core.
Because PPC-7810;-7811 serial computer protecting god directly place the work of PC display below; therefore; vitals as computer protecting god---power output transformer; the leakage flux of the alternating magnetic field of the 50HZ of himself will be brought serious interference to the operate as normal of display; cause shown picture and literal to roll or shake and can't recognize and distinguish; therefore need a kind of protected type toroidal transformer with good function of shielding; with eliminate or the substantive leakage flux that reduces toroidal transformer to the interference that the smooth working of display brings, make picture displayed and literal stable; clear.
Summary of the invention
The purpose of this utility model provides a kind of protected type toroidal transformer; it is except advantage with conventional toroidal transformer such as volume is little, efficient is high; use outside the advantage such as flexible; also overcome the defective of conventional toroidal transformer; promptly eliminate or substantially reduced the leakage flux of toroidal transformer, thereby avoided placing the power frequency magnetic field interference of the computer protecting god of computer monitor below the operate as normal generation of display.
As the utility model designer's understanding but not to any restriction of the present utility model, can understand like this principle that the leakage flux of transformer shields: the magnetic line of force in a magnetic field always is closure state, be the magnetic line of force from N (north) utmost point, directly get back to S (south) utmost point through certain short distance.Its magnetic flux (magnetic line of force) major part concentrates on iron core concerning transformer, constitutes flux loop, but also has the minority magnetic line of force to constitute the loop by the space, claims that usually this minority magnetic line of force by formation loop, space is a leakage flux.How to manage this leakage flux is decreased to bottom line, this is arbitrary magnetic leakage shielding technology and equipment problem to be solved.The principle that the technical solution scheme is followed has two, one, and good permeability magnetic material is placed the magnetic circuit of leakage flux, allows Lou grow as far as possible avoid spilling by guiding its to form loop from permeability magnetic material; Two are to use the magnetic line of force path partition of a kind of NULL with leakage flux, do not allow leakage flux be diffused into other places and go.When the schemes synthesis of these two kinds of anti-leakage fluxs was implemented together, then anti-leakage field effect will be than the better effects if that adopts single kind of scheme.
For reaching the purpose of this utility model, the utility model has been used in combination the leakage field road that permeability magnetic material and NULL shield toroidal transformer, its technical measures comprise, in the both sides up and down of the planar annular of toroidal transformer magnetic conductive material layer and/or the NULL layer that forms magnetic conductive loop is set one after the other or alternately, outermost layer is packaged into a complete machine by the package casing that a kind of magnetic conduction or NULL constitute with the protected type toroidal transformer.
The utility model designer finds, if before twining enamelled wire, at first coat one deck NULL on the iron core of transformer, will produce better magnetic leakage shielding effect when this NULL is used in more outer position.Therefore, by a preferred embodiment of the present utility model be, before twining each winding of enamelled wire, belt plane at the iron core of toroidal transformer puts a moulding coating member of being made by NULL respectively in both sides up and down, but two moulding coating members must not short circuit, and then each winding of winding enamelled wire, after this again around the planar annular of each winding up and down permeability magnetic material and/or NULL each one or more layers one after the other or alternately are set both sides, and then be encapsulated in the container of making by magnetic conduction or NULL, constitute a protected type toroidal transformer complete machine.
In order to strengthen the shield effectiveness of leakage flux, separate with insulating material (insulating paper or plastic film) between each permeability magnetic material and/or the NULL layer.Equally, in order to improve the dielectric strength of transformer, between iron core and the enamelled wire winding, between winding and the winding and all use insulating material (plastic film) to separate insulation between the shielding material layer.
In the utility model scope, magnetic conductive material layer comprises the material of any magnetic conduction preferably, such as but not limited to steel plate as low charcoal steel plate, silicon steel sheet etc., preferred silicon steel sheet; The NULL layer comprises any material that has better every the magnetic effect, such as but not limited to the plate/sheet material of copper such as brass, red copper, aluminium, preferred copper plate; Said insulating material comprises any material to electric insulation, such as but not limited to insulation fish paper, cable insulating paper, plastic film, electro-insulating rubber etc.
Protected type toroidal transformer of the present utility model has good effect and application prospect.
---7810, the matching component partly developed of-7811 serial computer protecting god's ups power---power output transformer now successfully is applied in PPC---7810, PPC---are on the refreshing product of computer protectings such as 7811A, B, C by the former PPC of being of protected type toroidal transformer of the present utility model.Before using this utility model, when promptly use does not add the toroidal transformer of shielding, when computer system energising operation, fairly obvious ground can see that very thick (＞5mm) bright band moves lines from bottom to up on the screen of display, figure, text screen shake severity, computer operation person is difficult to see clearly screen content.Use after this utility model, the bright band complete obiteration of moving, naked eyes can't feel figure, literal has jitter phenomenon.Facts have proved that the utility model fully can suppress and eliminate the serial computer protecting god's of PPC the leakage flux in power supply magnetic field to the interference of display smooth working.
In order further to improve the shield effectiveness of leakage flux, can use instead and better be used as the shielding material of leakage flux every magnetic and permeability magnetic material, its effect will be better, but manufacturing cost will increase, at this moment should decide what to use from the actual techniques requirement.
Use the screen method of this utility model, also the leakage flux of the toroidal transformer (50HZ power supply) of other different capacities can be reduced to bottom line, go thereby be convenient to be applied in other industrial equipment devices.Also can on the transformer of other form, use shielding principle of the present utility model and method, its leakage flux substantially be masked or reduction widely.
Description of drawings
Fig. 1 is the double shield formula toroidal transformer structural profile schematic diagram by a kind of preferred form of the present utility model.
Fig. 2 is a kind of generalized section that is used for the iron core of protected type toroidal transformer preferred form by utility model.
Fig. 3 is the single protected type toroidal transformer structural profile schematic diagram by a kind of preferred form of the present utility model.
Embodiment
According to the utility model, the common type of protected type toroidal transformer is double shield formula toroidal transformer and single protected type toroidal transformer.Those of ordinary skills can make many improvement and change according to spirit of the present utility model, but these improvement and change all do not exceed the scope that appended claim is asked for protection.Embodiment 1: double shield formula toroidal transformer
The so-called double shield formula transformer that goes in ring is meant to have two magnetic conductions and/or every the protected type of magnetic screen box (the comprising shell) transformer that goes in ring.The structure of an exemplary double shield formula toroidal transformer is seen Fig. 1.At first toroidal transformer 6 is sealed in iron (the 0.5 thick low charcoal steel plate) shielding box 5, the lead-out wire of high-low pressure winding is drawn from the hole 7,8 of two φ 12.By the diagram requirement, order is provided with one deck insulation fish paper 2 on the ground of bilateral symmetry up and down of transformer fe shielding box, the 0.3mm silicon steel sheet 4 that one deck magnetic conduction is used, one deck cable insulating paper 3, another layer 0.3mm silicon steel sheet 4, another layer insulation fish paper 2 is packaged into a double shield formula toroidal transformer complete machine with a red copper shielding box 1 with whole at last.As can be seen, the effect of iron shield box and four silicon steel sheets is identical, promptly strengthens the magnetic conduction effect of leakage flux on the structure, makes leakage flux as far as possible not to outdiffusion.
The effect of red copper shielding box 1 is every magnetic, and it is diffused into the magnetic circuit partition or the prevention leakage flux of less leakage flux outside the shielding box, in the hope of the purpose of the unlikely interferoscope operate as normal of the leakage flux that reaches power output transformer.(1) rated capacity: pressurizer 500VA; Inverter 200VA (two) winding voltage: divide three windings, a high pressure winding, two low pressure windings.
(1) high pressure winding: 0-190V-220V-250V self coupling tap type.
Enamelled wire line footpath φ 0.64
(2) low pressure winding: 15V enamelled wire line footpath φ 0.64
10.5V * 10.5V enamelled wire line footpath φ 1.8 (three) insulation electric strengths
Between winding and winding or the electric strength between winding and iron core: 50HZ exchanges pressure
3000 volts, do not puncture or do not dodge road ((four) no-load current I of leakage current≤5mA) in one minute.
When output (0-220V) open circuit, when between 0-190V, importing the 190V alternating voltage, the input circuit electric current I.≤ 25mA (five) overall dimension
External diameter≤157mm thickness≤34mm (six) iron core parameter
Overall dimension: φ is outer=148mm φ in=53mm
Thickness=19-20mm sectional area 〉=9.5cm
2
The cold rolling high silicon steel sheet of material: M3, magnetic flux density 〉=1.5T (seven) toroidal transformer manufacturing process
(1) iron core manufacturing process:
Silicon steel sheet is cut (or dashing) slivering---→ Wrapping formed---→ vacuum is moved back
Fire---→ coating Copper Foil
Before twining enamelled wire, the both sides up and down on the belt plane of iron core put a moulding coating member of being made by NULL respectively, but two moulding coating members must not short circuit.As shown in Figure 2, the moulding coating member is made by the thick copper plate of 0.3mm.The good result of this technical measures chat in front and, its principle is still around the iron core in advance every magnetic, useful work magnetic flux is concentrated on iron core more, and prevent that to greatest extent leakage flux from spreading towards periphery.
(2) wire winding
As follows by the wire winding example of transformer in the protected type toroidal transformer of the present utility model:
Wire winding require flat around, and film-insulated with insulating paper or ambroin between interlayer and winding, all enamelled wires adopt 130 grades of polyester paint envelope curves (QZ-2 type).
Winding distributes: (end) layer be the high pressure winding, outwards be the 15V winding successively, and outermost layer is 10.5V * 10.5 windings, and welding is each winding lead-out wire well, coats with the ambroin film at last, does not expose enamelled wire outside, i.e. the looping transformer.
Embodiment 2: single protected type toroidal transformer
So-called single protected type go in ring transformer be meant have a shielding box of making by permeability magnetic material, be the protected type of the magnetic conductivity package casing transformer that goes in ring.See shown in Figure 3ly by an exemplary configurations of single protected type toroidal transformer of the present utility model, the electric parameter of its toroidal transformer and the structural parameters of iron core and double shield formula toroidal transformer are similar basically.Symmetry is placed insulation fish paper 11, silicon steel sheet 13, cable insulating paper 12, another silicon steel sheet 13, another insulation fish paper 11 on the upper and lower planar sequence ground of toroidal transformer 14, be packaged at last in the iron shield box 10, the high-low pressure winding leads is drawn from the hole 7,8 of two φ 12.If the shielding material apolegamy suitably, also can satisfy the requirement that disturb in whole anti-magnetic field fully.
Single protected type toroidal transformer and double shield formula toroidal transformer difference are as follows: (one) enamelled wire line footpath changes φ 0.57 into by φ 0.64; (2) overall dimension: height is changed into≤35.5mm by≤34mm; (3) coiling arrangement architecture, low pressure winding 10.5V X 10.5V and 15V and high pressure around
Increase electromagnetic interference shield between the group one, promptly used the thick red copper of 0.1-0.15mm
Paper tinsel is spatially separated them, but does not allow Copper Foil to form short-circuited conducting sleeve, its work
With being to prevent that electromagnetic interference signal seals in the low pressure winding in the electrical network, influence inversion depressor worker
Stability and the reliability done.
Claims (10)
1, a kind of protected type toroidal transformer, it comprises a toroidal transformer that comprises annular core and the enamel-cover lead winding on it, it is characterized in that, also comprise one by the magnetic screen package casing that constitutes every magnetic or permeability magnetic material, and one after the other or alternately be symmetrical arranged magnetic conductive material layer and/or the NULL layer that forms the leakage flux magnetic conductive loop in the both sides up and down of the planar annular of toroidal transformer, separated with insulating material between each material layer.
According to the protected type toroidal transformer of claim 1, it is characterized in that 2, before twining the enamelled wire winding, the belt plane of annular core puts a moulding coating member of being made by NULL respectively in both sides up and down, but two coating members must not short circuit.
According to the protected type toroidal transformer of claim 2, it is characterized in that 3, the NULL of making moulding coating member is selected from any one in brass, red copper and the aluminum, preferred red copper.
According to the protected type toroidal transformer of claim 2, it is characterized in that 4, permeability magnetic material is selected from any one in mild steel, the silicon steel sheet, preferred silicon steel sheet.
According to the protected type toroidal transformer of claim 2, it is characterized in that 5, insulating material is selected from any in cable insulating paper, insulation fish paper, plastic film, the electro-insulating rubber, preferred cable insulating paper, insulation fish paper or plastic film.
6, according to each protected type toroidal transformer among the claim 1-5, it is characterized in that magnetic conductive material layer and NULL layer are symmetrical arranged alternately.
According to the protected type toroidal transformer of claim 6, it is characterized in that 7, it is one and comprises that a package casing of being made by permeability magnetic material is as the belt transformer of single protected type of magnetic screen box.
According to the protected type toroidal transformer of claim 6, it is characterized in that 8, it is a package casing that comprises inner shield box being made by permeability magnetic material and made by NULL as the double shield formula of the magnetic screen box transformer that goes in ring.
According to the protected type toroidal transformer of claim 7, it is characterized in that 9, the planar annular of the transformer that goes in ring also is provided with two-layer silicon steel sheet respectively in both sides up and down symmetrically, package casing is an iron shield box.
10, protected type toroidal transformer according to Claim 8 is characterized in that, toroidal transformer is sealed by an iron shield box, and the lower plane both sides also are provided with two-layer silicon steel sheet symmetrically respectively on the iron shield box, and package casing is a red copper shielding box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01259654 CN2503583Y (en) | 2001-09-11 | 2001-09-11 | Screened toroidal transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01259654 CN2503583Y (en) | 2001-09-11 | 2001-09-11 | Screened toroidal transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2503583Y true CN2503583Y (en) | 2002-07-31 |
Family
ID=33667976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01259654 Expired - Fee Related CN2503583Y (en) | 2001-09-11 | 2001-09-11 | Screened toroidal transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2503583Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101090022B (en) * | 2007-04-29 | 2011-11-23 | 沈阳工业大学 | Strong magnetic field permanent magnetic mechanism for preventing abnormal magnetization |
| CN102623164A (en) * | 2011-01-28 | 2012-08-01 | 新疆特变电工集团有限公司 | Magnetic shielding forming line equipment for transformer |
| CN103021645A (en) * | 2012-11-23 | 2013-04-03 | 贵州航天林泉电机有限公司 | Method and structure for improving electrical precision of non-contact rotating transformer |
-
2001
- 2001-09-11 CN CN 01259654 patent/CN2503583Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101090022B (en) * | 2007-04-29 | 2011-11-23 | 沈阳工业大学 | Strong magnetic field permanent magnetic mechanism for preventing abnormal magnetization |
| CN102623164A (en) * | 2011-01-28 | 2012-08-01 | 新疆特变电工集团有限公司 | Magnetic shielding forming line equipment for transformer |
| CN102623164B (en) * | 2011-01-28 | 2013-05-15 | 新疆特变电工集团有限公司 | Magnetic shielding forming line equipment for transformer |
| CN103021645A (en) * | 2012-11-23 | 2013-04-03 | 贵州航天林泉电机有限公司 | Method and structure for improving electrical precision of non-contact rotating transformer |
| CN103021645B (en) * | 2012-11-23 | 2016-04-20 | 贵州航天林泉电机有限公司 | Improve method and the structure of brushless revolver electric precision |
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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 |