CN2212827Y - Wound iron core - Google Patents
Wound iron core Download PDFInfo
- Publication number
- CN2212827Y CN2212827Y CN 94242260 CN94242260U CN2212827Y CN 2212827 Y CN2212827 Y CN 2212827Y CN 94242260 CN94242260 CN 94242260 CN 94242260 U CN94242260 U CN 94242260U CN 2212827 Y CN2212827 Y CN 2212827Y
- Authority
- CN
- China
- Prior art keywords
- ladder
- core
- steel belt
- steel band
- iron core
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 238000005520 cutting process Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 238000004804 winding Methods 0.000 abstract 3
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
A wound core is formed by winding a straight steel strip having an equal width and having a step-like cross section. The top angles of two steel belt winding steps which are the narrowest and close to each other are located on the periphery of an ellipse which is gradually elliptical when seen from the cross section, and the top angles of the rest steel belt steps are located on the periphery of the ellipse which is gradually elliptical. After the cylindrical framework is assembled on the winding iron core, the phenomena of steel belt loosening and falling off caused by collision can be avoided during high-speed rotation. The steel belt material is equal-width linear steel belt, and the utilization rate of the steel belt material is 95-96%. And the blanking cutter linearly cuts the steel belt, so that the cutting efficiency is high and the cutter abrasion is small.
Description
The utility model relates to a kind of Wound core of transformer.
Existing transformer core has three kinds, be three kinds of E type punching iron cores, C type Wound core, R type Wound core, wherein E sections core and C sections core are because of the characteristic of structure and manufacturing process causes the noise of product big, magnetizing power is big, temperature rise, power consumption is big, efficient is low, and this type of iron core also has manufacturing process complexity, production efficiency low, defectives such as the consistency of performance difference of iron core.And every performance index of R sections core have greatly improved than E type and C sections core and improve, but because of the cross section of its iron core is circular, so when making, the curve steel band of the nonlinear change wide in the middle of the used steel band of reeling must be divided into, that two ends are narrow.The consumption of steel band is increased, and general utilization has only 60-75%, as described in Chinese patent 92241551.X.Adding man-hour, this cutting knife of steel band material down is curved motion, so the wearing and tearing of cutter are big, cutting efficiency is low; Then its production cost must improve, make selling price behind the transformer then far above the transformer that adopts C type and E sections core, therefore general electron production factory can not use R sections core transformer fork-like farm tool used in ancient China to make electronic product in a large number, thereby has influenced being extensive use of of R sections core.
The purpose of this utility model is that the Wound core that a kind of performance is good, cost is low will be provided.
The utility model is to implement like this:
According to the basic calculation of " electromagnetism " indication, determine the physical dimension of iron core according to the iron core capacity.Calculating on the cross section of this Wound core to have N ladder, and N is odd number (N=5,7,9 ...), its N=
, K wherein
NBe constant, generally be decided to be 0.6-1.2; D is the core section diameter.
Wound core should have the magnetic steel band of (N+l)/2 kind of different in width, obtains the thickness and the width of steel band of each ladder then with special-purpose formula, and the THICKNESS CALCULATION formula of ladder is:
H
1-n=K
tD/N; K
tBe 0.65-1.8;
Steel band is cut into the wide straight line steel band material of several width specifications according to the top data that calculate fork-like farm tool used in ancient China.The wide straight line steel band of this different in width is fixed on again and can keeps being wound to the wideest steel band by narrow steel strip on the constant special fixture of core center axis, from then on the wideest again being wound to is the narrowest, reels successively, forms iron core at last.
The cross section of this kind iron core, no matter it has several ladders, the drift angle of each ladder all can drop on one by in the asymptotic oval-shaped circumference of circle.On this cross section, find out, the narrowest steel band ladder drift angle and the second narrow steel band ladder drift angle close with it should drop on the oval periphery of the asymptotic ellipse of this circle and go up (the imaginary point bank line in the accompanying drawing 4), and the drift angle of remaining steel band ladder all should drop on the circumferential edge of this asymptotic ellipse (the dotted line camber line in the accompanying drawing 4).
To the joint of the steel band of different in width, available normally used bridging type or welded type join during coiling.
The Wound core of making at last in the time of will can not taking place to collide iron core because of the skeleton high speed rotating, makes the iron core strip deformation, gets loose when the coiling of supporting cylinder frame.Because this Wound core is rolled into a plurality of stepped steel coil strip pieces and forms steel band is folded, except that the outside of the narrow steel strip ladder of coiling initial sum end part and inboard no steel band clamping, other each steel band ladder is all clamped by the steel band ladder of both sides.
After joining two cylinder frames at the iron core overcoat, iron core should maintain a certain distance with the inner periphery of skeleton cylinder.So when skeleton cylinder high speed rotating, Wound core may collide with skeleton, but the drift angle that drops on the steel band ladder on the circumferential edge can not make strip deformation, get loose after collision, that is because steel band is compressed around ladder block by the steel coil strip of the left and right sides, and the narrowest steel band drift angle place nothing of the left and right sides, cross section compresses, if can make strip deformation loosening through collision, so design of the present utility model is that two the narrowest close steel coil strip are dropped on the oval periphery of an asymptotic ellipse around the drift angle of ladder; Even then skeleton and iron core collision also can only be collided the drift angle on the asymptotic oval circumferential edge, and be bumped less than the drift angle on the oval periphery of asymptotic ellipse, the narrowest ladder strip deformation and loosening phenomenon so just can not take place.
Because the stepped space that forms between circle and each steel band ladder in the skeleton cylinder has than the bigger radiating surface of existing iron core formation, so the temperature rise of this kind Wound core is than low with the temperature rise of E, the C of power, R sections core.
Adopt the Wound core of the utility model indication, have the good electric magnetic property of R sections core, and its area of dissipation is big, temperature rise is low; Because the linearly wide shape of steel band, then the raw-material utilance of steel band can be to 95-96%, and improves 20-35% than the steel band utilance of R sections core.Thereby cost of manufacture greatly descends, and makes its universal use on each electronic product become possibility.
Elaborate below in conjunction with the Wound core of accompanying drawing the utility model indication.
Accompanying drawing 1 is the profile schematic diagram of this Wound core assembling skeleton coiling electromagnetic wire;
Accompanying drawing 2 is profile schematic diagrames of this Wound core;
Accompanying drawing 3 is cross section (A-A) schematic diagrames of this Wound core;
Accompanying drawing 4 is these Wound cores and cross sectional representation after cylinder frame cooperates.
With reference to accompanying drawing, a kind of Wound core is to be reeled on a special fixture by the steel band (1) of different in width to form, its steel coil strip around after cross section stepped, each steel coil strip is around the drift angle (K of the ladder that forms
N-N-1, K '
N-N-1) should drop on the oval periphery of an asymptotic ellipse, and the drift angle (K of remaining steel band ladder
1-N-2, K '
1-N-2) should drop on the circumferential edge of this asymptotic ellipse, cover is joined two cylinder frames (2) on the both sides of Wound core, keeps certain staircase rectilinear clearance between Wound core (1) and the skeleton (2).
When the bobbin fast rotational, the steel coil strip of iron core (1) is around ladder ladder drift angle (K placed in the middle
1-N-2) may collide with the inner periphery limit of cylinder frame, so will collide the ladder drift angle (K that also can only collide on the circumferential edge that drops on this asymptotic ellipse
1-N-2), and bump less than the steel band drift angle (K on the oval periphery that drops on asymptotic ellipse
N-N-1, K '
N-N-1), that just reaches the purpose that can not make this part steel band be out of shape when rotated, get loose.Owing to be formed with enough stepped gaps between Wound core (1) and the cylinder frame (2), its area of dissipation greatly increased.
Be wide linearity because of the steel band that this Wound core adopted again, save steel band than nonlinear curve band material and reach 20-35%, and because of cutting tool no longer moves along a curved path, and moving linearly, the cutting efficiency of cutter is greatly improved, the corresponding prolongation of the life-span of cutter.
When making iron core, the physical dimension of iron core is determined by the iron core capacity; The width of steel band, the thickness of steel band all are fixed with special-purpose formula calculating.The ladder number of steel band ladder is to use N=
Fork-like farm tool used in ancient China calculates, wherein K
NBe the ladder distribution constant, generally get 0.6-1.2.
And the step-thickness H of iron core
1-n=K
tD/N;
K wherein
4Get 0.65-1.8.
Adopt this Wound core, not only have the good electric magnetic property of R shape iron core, and its area of dissipation is big, temperature rise is low.And manufacturing cost and price will be significantly less than manufacturing cost and the price that adopts R sections core.
Claims (3)
1, a kind of Wound core, be by steel coil strip after forming, on its both sides, add join the coiling cylinder frame form, it is characterized in that this steel coil strip around after cross section be stepped; And the drift angle (K of ladder
1-N-2) should drop on the circumferential edge of an asymptotic ellipse, and the ladder drift angle (K of the narrowest close two steel bands
N-N-1) should drop on the oval periphery of this asymptotic ellipse.
2,, it is characterized in that maintaining stair-stepping gap between steel band ladder (1) on the cross section of Wound core and the cylinder frame (2) according to the Wound core of claim 1.
3,, it is characterized in that the definite of ladder number of its steel band can utilize formula N=according to the Wound core of claim 1
Fork-like farm tool used in ancient China determines that wherein D is the core section diameter; K
NGenerally get 0.6-1.2;
The step-thickness H of iron core
1-n=k
tD/N;
K
tGet 0.65-1.8;
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 94242260 CN2212827Y (en) | 1994-07-14 | 1994-07-14 | Wound iron core |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 94242260 CN2212827Y (en) | 1994-07-14 | 1994-07-14 | Wound iron core |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2212827Y true CN2212827Y (en) | 1995-11-15 |
Family
ID=33848888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 94242260 Expired - Fee Related CN2212827Y (en) | 1994-07-14 | 1994-07-14 | Wound iron core |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2212827Y (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101385227B (en) * | 2006-02-14 | 2013-05-29 | 洛华托奇公司 | Field pole members and methods of forming same for electrodynamic machines |
CN106024371A (en) * | 2016-07-29 | 2016-10-12 | 江西大族能源科技股份有限公司 | Three-dimensional wound core six-section seven-stage equal length cutting method |
-
1994
- 1994-07-14 CN CN 94242260 patent/CN2212827Y/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101385227B (en) * | 2006-02-14 | 2013-05-29 | 洛华托奇公司 | Field pole members and methods of forming same for electrodynamic machines |
CN106024371A (en) * | 2016-07-29 | 2016-10-12 | 江西大族能源科技股份有限公司 | Three-dimensional wound core six-section seven-stage equal length cutting method |
CN106024371B (en) * | 2016-07-29 | 2017-11-07 | 江西大族能源科技股份有限公司 | The isometric sawing sheet method of seven grades of three-dimensional rolled iron core six section |
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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 |