WO1996042096A1 - Reacteur et procede de production correspondant - Google Patents

Reacteur et procede de production correspondant Download PDF

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Publication number
WO1996042096A1
WO1996042096A1 PCT/JP1996/001530 JP9601530W WO9642096A1 WO 1996042096 A1 WO1996042096 A1 WO 1996042096A1 JP 9601530 W JP9601530 W JP 9601530W WO 9642096 A1 WO9642096 A1 WO 9642096A1
Authority
WO
WIPO (PCT)
Prior art keywords
core
main magnetic
reactor
iron core
coil
Prior art date
Application number
PCT/JP1996/001530
Other languages
English (en)
Japanese (ja)
Inventor
Junichi Teranishi
Tetsuya Minato
Toshimitsu Yonehara
Shohei Toyoda
Toshiaki Bito
Takashige Sato
Original Assignee
Matsushita Electric Industrial Co., Ltd.
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
Priority claimed from JP7143262A external-priority patent/JPH08339924A/ja
Priority claimed from JP7181322A external-priority patent/JPH0935965A/ja
Priority claimed from JP25270595A external-priority patent/JP3505877B2/ja
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Priority to KR1019970700803A priority Critical patent/KR970705157A/ko
Publication of WO1996042096A1 publication Critical patent/WO1996042096A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores

Definitions

  • the present invention relates to a reactor used in electrical and electronic equipment.
  • conventional reactors generally consist of an iron core 101 laminated with E-shaped electromagnetic steel sheets and an iron core 101 laminated with I-shaped electromagnetic steel sheets. 2 and one coil 103 are incorporated in them, and a core gap spacer 104 is formed in advance on the E-shaped iron core 101.
  • a mounting plate 105 for installation on other equipment is also fixed to the iron core 101 by welding or the like.
  • the coil 103 is insulated by the insulating paper 106.
  • the width dimension of the main magnetic leg of the iron core 101 is It is necessary to set the inner diameter of the coil to W2, which has sufficient dimensional margin for Wl.
  • the coil inner diameter dimension L2 must be significantly increased with respect to the lamination thickness dimension L1 of the iron cores 101 and 102. did not get
  • FIG. 1 A second conventional example of a reactor is shown in FIG.
  • 205 is a fixing bracket, which is fixed to the second iron core 204 by means of welding or the like.
  • the first iron core 201 is completely electrically separated and insulated from the metal fitting 205 and the second iron core 204 connected thereto.
  • the object of the present invention is to solve such conventional problems, and to provide a reactor excellent in economy, productivity and performance.
  • the reactor of the present invention comprises a square magnetic path formed using one or more iron cores, and insulating means provided inside the square magnetic path. and a coil arranged around the main magnetic leg core.
  • At least a part of the insulating means has elasticity ⁇
  • the insulating means is made of a porous material or a fibrous material.
  • a square magnetic path formed using one or more iron cores, a main magnetic leg iron core arranged inside the square magnetic path, and around the main magnetic leg iron core and a coil arranged via an insulating means.
  • the main magnetic leg iron core has a circular, oval, or rectangular magnetic path cross section with curved corners.
  • At least part of it is resin-cast or resin-molded.
  • a U-shaped cushioning material is interposed at the corner of the main magnetic leg core having a rectangular cross section, and the coil is directly wound thereon.
  • the corners of the main magnetic leg iron core having a rectangular cross section are rounded, and the coil is directly wound thereon without any cushioning material.
  • a member having a rounded end face is attached to at least both ends of a pair of opposite sides of the main magnetic leg core having a rectangular cross section, and a coil is directly wound from above.
  • the main magnetic leg core is made by stacking electromagnetic steel sheets and fixing them by projection welding.
  • main magnetic leg iron core is projection welded at one point.
  • main magnetic leg core is projection welded at multiple points in the direction of the magnetic flux.
  • the method for manufacturing a reactor of the present invention comprises: a first step of providing a projection in at least one location on an electromagnetic steel sheet; a second step of laminating a plurality of said electromagnetic steel sheets; The method includes a third step of applying injection welding to affix a plurality of the electromagnetic steel sheets to form an iron core, and a fourth step of providing a coil around the iron core.
  • the method for manufacturing a reactor of the present invention comprises: a first step of providing a projection in at least one location on an electromagnetic steel sheet; a second step of laminating a plurality of said electromagnetic steel sheets; a third step of performing injection welding to fix the plurality of magnetic steel sheets to form an iron core; and a fourth step of providing a coil around the iron core.
  • the reactor of the present invention includes two first iron cores formed by laminating electromagnetic steel sheets which are inserted through the coils, respectively, and arranged in parallel.
  • the corner portion of the first iron core having a rectangular cross section is The coil is wound directly through a U-shaped cushioning material.
  • the reactor of the present invention has two first iron cores each made by laminating electromagnetic steel sheets, which are inserted through the coils and are arranged in parallel, and a second iron core made by laminating these and another electromagnetic steel sheet.
  • the corner portion of the first iron core having a rectangular cross section is rounded. A coil is directly wound on this.
  • the reactor of the present invention includes two first iron cores formed by laminating electromagnetic steel sheets which are inserted through the coils, respectively, and arranged in parallel.
  • the first iron core having a rectangular cross section has at least Also, a member having a curved end surface is attached to both ends of a pair of opposite sides, and a coil is directly wound.
  • At least the first iron core is formed by laterally layering seven magnetic steel plates and fixing them by projection welding.
  • the first iron core is projection welded at one point.
  • the first iron core is projection welded at a plurality of locations in the magnetic flux direction.
  • the second core has a trapezoidal cross-section with the side that abuts against the first core as the bottom, and an angle formed by the top and the oblique side.
  • the part is projection welded.
  • the reactor of the present invention can be treated as a component separated from the main magnetic leg core and the core that constitutes the square magnetic path. Since they can be arranged close to each other, the main magnetic leg core is insulated from the square-shaped magnetic path, so that the main magnetic leg core and the coil are insulated. Since the coil can be wound close to the main magnetic leg core without the need for a coil, the amount of winding used for the coil can be reduced. In addition, since at least a part of the insulating means has elasticity, the insulating means is pressed and fixed by the main magnetic leg core and the square magnetic path. Magnetic noise and magnetic vibratory noise are suppressed.
  • the fixation becomes stronger and the magnetic noise and magnetic vibration noise are reduced. More effective in deterrence.
  • the varnish impregnation can be carried out more reliably.
  • a square magnetic path formed using one or more iron cores;
  • the main magnetic leg core has a circular, oval, or rectangular magnetic path cross section with curved corners, damage to the windings due to winding tension can be prevented. be.
  • each part can be fixed securely, and the link is excellent in protection from the outside air, waterproofness, etc. Actors can be provided.
  • the coil is directly pressed against the corners of the rectangular cross section of the main magnetic leg and is damaged.
  • the coil is not pressed against the iron core and bent in the straight portions other than the corners of the main magnetic leg iron core, Since there is no damage to the coil, the straight portion of the main magnetic leg iron core (that is, other than the corner portion) can be made without a buffer.
  • a method for manufacturing a reactor according to the present invention comprises: a first step of providing a projection in at least one location on an electromagnetic steel sheet; a second step of laminating a plurality of the electromagnetic steel sheets; A third step of applying projection welding to affix a plurality of the electromagnetic steel sheets to form an iron core; and a fourth step of providing a coil around the iron core.
  • the time required for welding can be shortened, and this reduces the diffusion of heat during welding, improving workability and preventing the magnetic flux from interfering. It is possible to manufacture a reactor with reduced projected cross-sectional area and reduced loss.
  • FIG. 1 is a sectional view of the reactor of the first embodiment of the present invention
  • FIG. 2 is a first outline drawing of the main magnetic leg core of the same reactor
  • FIG. 3 is the same reactor.
  • FIG. 4 is a third outline drawing of the main magnetic leg core of the same reactor
  • FIG. 5 is a cross section of the reactor of the second embodiment of the present invention
  • Fig. 6(a) is a block diagram of a reactor according to a third embodiment of the present invention
  • Fig. 6(b) is a block diagram of a reactor according to a third embodiment of the present invention
  • FIG. 8 is a configuration diagram of a reactor according to a fifth embodiment of the present invention
  • FIG. 9 is a diagram of a sixth embodiment of the present invention.
  • FIG. 10 is a block diagram of a reactor according to the seventh embodiment of the present invention;
  • FIG. 11 is a first construction of the reactor according to the eighth embodiment of the present invention;
  • FIG. 12 is a second configuration diagram of the reactor of the eighth embodiment of the present invention, and
  • FIG. 13 is the configuration of the main magnetic leg core of the reactor in the ninth embodiment of the present invention
  • Fig. 14 is a configuration diagram of the electromagnetic steel sheet forming the main magnetic leg iron core of the same reactor;
  • Fig. 15 is a sectional view of the same electromagnetic steel sheet;
  • FIG. 17 is a process diagram used in the ninth embodiment of the present invention
  • Fig. 18 is a block diagram of a projection welding machine
  • Fig. 18 is an enlarged view of the essential parts of the same projection welding machine
  • Fig. 19 is a main magnetic leg iron core of a reactor in a ninth embodiment of the present invention.
  • Fig. 20 is a comparison diagram of iron loss values;
  • Fig. 21 is an external view of a conventional reactor; Ta no Jizu, Fig. 23 is a top view of the same reactor;
  • Fig. 24 is an outline drawing of another conventional reactor;
  • Fig. 26 is an explanatory drawing of the bulge in the winding of the buffer material of the conventional reactor;
  • FIG. 27 is an explanatory drawing of the winding jig (side plate) of the conventional reactor;
  • Fig. 8 is an explanatory diagram of the winding method of the conventional reactor,
  • Fig. 29 is an explanatory diagram of the structure of the main magnetic leg iron core fixed by conventional TIG welding, and
  • Fig. 30 is a plan view of the above ( Fig. 31 is a front view of the same.
  • a reactor which is a first embodiment of the present invention, will be described below with reference to FIG.
  • the reactor is explained, but the present invention is not limited to the reactor, and it goes without saying that it can be widely applied to electromagnetic machines such as transformers and motors. .
  • Fig. 1, 1 and 2 are iron cores formed by stacking I-shaped and C-shaped magnetic steel sheets, respectively, and forming blocks by means of welding, protruding pressure welding, bonding, or the like.
  • 3 is a main magnetic leg core made by laminating rectangular electromagnetic steel plates different from the cores 1 and 2, and a coil 4 is directly wound around this.
  • 5 is a core gap spacer that also serves as insulating paper.
  • the main magnetic leg core 3 around which the coil 4 is directly wound is placed on top of the main magnetic leg core 3, and the core gap spacer 5, which also serves as insulation paper, is interposed at two points, and the C-shaped core is assembled.
  • the I-shaped iron It is held down by the core 1 and fixed by welding at the butt part 6 of the iron cores 1 and 2.
  • a mounting plate 7 for attachment to other equipment is also fixed to the core 2 by subsequent welding.
  • the reactor is given a varnish impregnation. In this way, a square magnetic path is formed.
  • the main magnetic leg core 3 made by laminating rectangular electromagnetic steel sheets is completely separated from the other cores 1 and 2 and the ground by the core gap spacer 5 that also serves as insulating paper. Separated and insulated. Therefore, insulation between the coil 4 and the main magnetic leg core 3 is basically unnecessary.
  • the coil 4 can be directly wound using the completely separated main magnetic leg core 3 as the winding core, which makes it possible to minimize the inner diameter of the winding and significantly reduce the wire material. In addition to this, it is possible to reduce manufacturing man-hours by eliminating the need for winding core jigs and the need to separate the coil from winding core jigs after winding.
  • the abutting portion between the main magnetic leg iron core 3 and the iron core 1 and the abutting portion between the main magnetic leg iron core 3 and the iron core 2, that is, the core gap meet the characteristics required for the reactor. More usually, it is provided about 3 mm.
  • the core gap spacer 5 having elasticity in at least the thickness direction and also serving as an insulating paper is interposed in the core gap portion of this problem, and after assembly, By applying the varnishing, the iron core 1 and the magnetic leg iron core 3, the magnetic leg iron core 3, the iron core 2, etc. facing each other in the core gap portion are fixed mechanically. As a result, magnetic vibration and magnetic noise generated in the core gap are greatly reduced.
  • the core gap spacer 5 that also serves as insulating paper, it will be more firmly impregnated with varnish, which is effective. '
  • the main magnetic leg core 3 is a separate core separate from the cores 1 and 2, the magnetic powder is integrally compacted and the shape of the cross section of the magnetic path is shaped into an oval, circular, rectangular, or the like. It is also extremely effective from the viewpoint of winding workability. That is, when the cross-sectional shape of the main magnetic leg core 3, which serves as the winding core, is circular as shown in FIG.
  • the iron cores 1, 2, the main magnetic leg iron core 3, and the coil 4 can be securely fixed, and the fixed portion of the terminal can be fixed.
  • the number of man-hours for manufacturing can be reduced, and a structure that is highly suitable for mass production can be obtained.
  • the main magnetic leg core 3 of the reactor of this embodiment is completely separated and insulated from the ground, so the coil 4 can be connected to the main magnetic leg core 3 without insulation. can be wound directly on As a result, the amount of electric wire used can be greatly reduced, and the number of production steps can be reduced by eliminating the need for winding core jigs and the separation work of the coil 4 after winding and the winding core jigs. can also be measured.
  • the core gap cores 1 and 2, the main magnetic leg core 3, and the core gap that also serves as insulating paper are separated by a core gap spacer 5 that also serves as insulating paper and is inserted into the core gap.
  • the chip spacer 5 is fixed and adhered, and the magnetic vibration and magnetic noise generated from the core gap portion are greatly reduced.
  • FIG. 5 is a cross-sectional view of the second reactor of the present invention.
  • This embodiment differs from Embodiment 1 in that the magnetic path formed by iron cores 1 and 2 and the main magnetic leg core 3 are different from the main magnetic leg core 3 On one side, they are in direct contact, and on the other side, they are in contact via a core gap spacer 9. Further, an insulating sheet 8 is arranged between the main magnetic leg core 3 and the coil 4. It is a point.
  • the coil 4 when the coil 4 is directly wound around the main magnetic leg core 3, the coil 4 is actually wound at the corner of the main magnetic leg core 3, which has a rectangular cross section, depending on the tension at the time of winding. 4 Enamelled wires are easily damaged and can cause turn-to-turn shorts in the coil.
  • a suitable cushioning material 10 is wound around the entire circumference of the rectangular cross-section of the main magnetic leg core 3, and the coil 4 is wound thereon. .
  • the buffer material 10 is pressed against the corner of the main magnetic leg core 3 by the winding with a considerable winding tension.
  • a cushioning material 10 made of a material having considerable mechanical strength is required.
  • the cushioning material 10 when the cushioning material 10 is wound around the main magnetic leg core 3 having right-angled corners, the cushioning material 10 tends to swell like a drum as shown in FIG. , the degree increases as the number of windings increases.
  • the main magnetic leg core 3 when the coil 3 is wound around the main magnetic leg core 3, the main magnetic leg core 3 pre-wound with the cushioning material 10 is shown in FIGS.
  • the main magnetic leg core 3 is fixed by fitting it into the recessed portion 14 of the winding jig (side plate) 13 . Therefore, the dimensions of this recessed portion 14 must be dimensions W' and L* that are at least larger than dimensions W and L including the bulge in FIG.
  • the coil 4 will also swell like a drum according to the swelling of the cushioning material 10, and the space factor of the winding will decrease, and the cost will increase due to the increase in the amount of wire used. This will lead to problems such as an increase in Therefore, it is necessary to minimize the swelling of the cushioning material 10 as much as possible.
  • the outer periphery of the main magnetic leg core 3 which has a rectangular cross section, is formed by stacking rectangular rail-type magnetic steel sheets and forming a block by means of welding, protruding pressure welding, adhesion, or the like.
  • a U-shaped cushioning material 10 is pasted on the coil 4, and the coil 4 is directly wound thereon.
  • the winding of the coil 4 at most touches the flat part of the main magnetic leg core 3 when winding, and the winding of the coil 4 is There is no damage caused by rolling, and cushioning material for that part is unnecessary.
  • the material of the buffer material 10 when it is wound around the main magnetic leg iron core 3 having a rectangular cross section, it should be soft enough to be easily wound along the corner portion 11 of the main magnetic leg iron core having a right angle, and Afterwards, it has a tenacity that does not cause cracks or tears at the point where it is wound around the corner portion 11 of the main magnetic leg iron core at a right angle. It is required to have a mechanical strength that does not break even when pressed against the corner portion 11 of the main magnetic leg core.
  • the main magnetic leg core Considering the economy of material cost and winding workability, the main magnetic leg core
  • a fibrous material in which the winding direction of the cushioning material 3 and the fiber length of the cushioning material 10 are the same is suitable for this, and in this example, high-density type kraft paper was used.
  • the force applied to the cushioning material 10 also changes accordingly.
  • the thickness of the cushioning material 10 and the number of windings may also be selected according to practical use such as the force actually applied to them and the workability of winding.
  • the amount of cushioning material 10 used can be reduced to a practically necessary minimum, and at the same time, the attachment work can be reduced accordingly.
  • a fiber having a tensile breaking strength in the roll direction that is three times or more as large as that in the direction perpendicular to the roll direction is used as the cushioning material 10.
  • FIG. 7 shows a fourth embodiment.
  • a configuration in which four L-shaped cushioning materials 10 are attached to each of the four corners 11 of the main magnetic leg core 3 is also useful as a measure for further minimizing the amount of cushioning material used. . It may be selected in consideration of workability of attaching to the main magnetic leg core 3 .
  • the corner portion 11 of the main magnetic leg core 3 is R-processed by means such as grinding or melting with a welding torch, so that the use of the cushioning material 10 is eliminated.
  • the configuration is based on
  • the size of R is determined by the wire diameter of the wire actually used, the type of enamel film, physical properties, and the size of the winding tension used during winding.
  • the winding flaws at the corner portion 11 of the main magnetic leg core basically do not occur.
  • winding flaws may occur due to the accuracy of R processing, the finish of the ground surface, and the adhesion of grinding shavings and foreign matter to the surface of the R part.
  • a thickness of several tens of m A polyester tape or the like may be attached to the corner portion 11 of the main magnetic leg iron core for protection in case of emergency.
  • FIG. 11 Next, a reactor that is an eighth embodiment of the present invention will be described with reference to FIGS. 11 and 12.
  • FIG. 11 is an eighth embodiment of the present invention.
  • FIG. 13 is an explanatory diagram of the configuration of the main magnetic leg core 3 of the reactor in one embodiment of the present invention.
  • 15 is a cylindrical weld formed by projection welding.
  • the main magnetic leg core 3 is manufactured by fixing the laminated electromagnetic steel plates (for example, silicon steel plates) 16 to such a cylindrical welded body 15. As shown in FIG. 14, which is a block diagram of one electromagnetic steel sheet 16 constituting the main magnetic leg core 3, a projection 17 is provided on the surface of each electromagnetic steel sheet 16.
  • the plate thickness of the electromagnetic steel sheet 16 was 0.5 mm, the vertical dimension was 49.5 mm, and the horizontal dimension was 27.4 mm.
  • FIG. 15 is a cross-sectional view of the electromagnetic steel sheet 16.
  • the diameter D of the projection 17 and the height H of the projection 17 are each 1.5.
  • Three types of X 0.7, 2.0 x 0.9, and 2.5 x 1.1 (unit: mm) were created.
  • Fig. 16(a) is a view of the electromagnetic steel sheets stacked (laminated).
  • a main magnetic leg core 3 is formed as shown in FIG. 16(b), which is a sectional view.
  • Projection welding is the process of press-molding hemispherical or truncated cone-shaped projections at any location on the surface of a plate-shaped object to be welded. This is a resistance welding method in which the welding current is concentrated on the protrusions.
  • the projections 17 provided on each electromagnetic steel sheet are used as balances and stacked to form the project shown in FIG.
  • a resistance welding machine 21 having an upper electrode 18, a lower electrode 19, and a positioning frame 20 is applied to an action welding machine to perform projection welding.
  • FIG. 18 is an enlarged view of the main parts of the projection welding machine, in which a welded body 15 connecting all of the laminated electromagnetic steel sheets 16 is generated.
  • the upper electrode 18, the lower electrode 19, the positioning frame 20 and the electromagnetic steel plate 16 of the welding machine 21 are shown enlarged.
  • the projections 17 of the positioning frame 20 are melted by resistance heat during projection welding, and the magnetic steel sheets 16 tend to sink and move in the direction in which they are brought into close contact with each other.
  • the clearance dimension C was set to 0.03 to 0.05 mm.
  • FIG. 29 is an explanatory view of the structure when the main magnetic leg core is fixed by the conventional TIG welding method.
  • 30 is a plan view of the same, and
  • FIG. 31 is a front view of the same.
  • TIG welding is usually performed at two points, a-b and c-d, to maintain the bonding strength. At this time, due to structural variations, It is impossible for the positions of the upper and lower weld beads 22, 23 to match perfectly, and a deviation of dimension A occurs.
  • the main magnetic leg core 3 when operating as a reactor, the main magnetic leg core 3 will be shortened by one turn in the path a - b - c - d, and the magnetic flux flowing in the main magnetic leg core 3 will be reduced to A potential proportional to the amount of magnetic flux interlinking cross section A X B is generated in the short-circuit path a — b — c — d. Then, a short-circuit current determined by this potential and the electrical resistance value of the short-circuit path a-b-c-d flows through this short-circuit path, increasing the loss.
  • the cross-sectional area A x B is the projected cross-sectional area where the magnetic flux vertically interlinks the short-circuit path a-b-c-d.
  • the main magnetic leg core 3 is subjected to projection welding at one point in the lamination direction of the electromagnetic steel sheets 16, and one fixing means is provided.
  • the cylindrical welded body 15 By using only the cylindrical welded body 15, it is possible to prevent the formation of a one-turn short-circuit path.
  • both sides of the lamination end face of the iron core are welded over a long length, so the work takes a long time.
  • the projection welding method as in the present invention there is no need to move the welding electrode, and since there is little heat diffusion, the welding current is concentrated, thereby reducing welding work.
  • the time can be greatly shortened and stable weldability can be obtained.
  • FIG. 19 is a diagram showing another aspect of the electromagnetic steel sheet that constitutes the main magnetic leg core 3 of the reactor in the ninth embodiment of the present invention. This is an embodiment in which two similar protrusions 17 are provided with an interval of 6 to 7 mm.
  • Fig. 20 is a comparison chart of iron loss values. In the case of projection welding, iron loss increases as the projection diameter increases and as the number of welding points increases.
  • spot resistance welding method which is very similar to the projection welding method, is limited to piercing and welding two or three laminated electrical steel sheets. It is designed and like the present invention It is impossible to weld 38 to 113 sheets of magnetic steel sheets.
  • the iron core is fixed by performing projection welding at one point as in this embodiment, the one-turn short-circuit path will not be formed, and no loss will occur due to this. become. Also, even if projection welding is performed at two points, the position of the projection 17 is determined by the mold, so the positional deviation between the two points can be extremely small (usually (within 0.3 mm), the loss can be suppressed to a level close to that of the one-point projection, and the loss can be significantly reduced compared to conventional welding.
  • the welding speed can be made faster than that of TIG welding, and since the diffusion of welding heat is small, the workability is also improved.
  • the reactor of the present invention When the reactor of the present invention is used in an electric/electronic device such as an air conditioner, the iron loss is reduced and the power loss is reduced, so that a large energy saving effect can be obtained.
  • the reactor of the present invention can reduce the amount of coil windings used.
  • the magnetic noise and magnetic vibration noise that would occur between the main magnetic leg core and the square magnetic path are suppressed, and the main magnetic leg core and the magnetic path are suppressed.
  • the fixing of the edge means and square-shaped magnetic path can be made stronger, and the varnish impregnation can be carried out more reliably.
  • each part can be securely fixed, and a reactor excellent in protection from outside air, waterproofness, etc. can be provided. ⁇
  • the short circuit formed in the iron core is perpendicular to the magnetic flux.
  • the laminated edge (2) of the iron core is laminated.
  • the work time is long because the entire length is welded.
  • the welding electrode does not need to travel, so the welding work time can be greatly shortened.
  • the bonding strength can be adjusted by increasing the number of welding points in the magnetic flux direction.

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  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Insulating Of Coils (AREA)

Abstract

La présente invention concerne un réacteur pour matériels électriques ou électroniques constitué d'un passage magnétique rectangulaire comportant au moins un noyau de fer, d'un noyau de bras magnétique principal isolé à l'intérieur du passage magnétique rectangulaire et d'une bobine enroulée autour du noyau du bras magnétique principal. Grâce à cet agencement, le noyau du bras magnétique principal est complètement isolé des autres noyaux et de la terre, et il n'y a pas besoin d'isolation électrique entre la bobine et le noyau du bras magnétique principal qu'elle renferme. Il en résulte que la bobine peut être directement enroulée autour du noyau du bras magnétique principal, ce qui permet de réduire considérablement la quantité de fil utilisé pour la bobine, et de produire un réacteur peu coûteux.
PCT/JP1996/001530 1995-06-09 1996-06-06 Reacteur et procede de production correspondant WO1996042096A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019970700803A KR970705157A (ko) 1995-06-09 1996-06-06 리액터 및 그 제조방법(reactor and method of making the same)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP7143262A JPH08339924A (ja) 1995-06-09 1995-06-09 リアクタ
JP7/143262 1995-06-09
JP7/181322 1995-07-18
JP7181322A JPH0935965A (ja) 1995-07-18 1995-07-18 リアクタ
JP7/252705 1995-09-29
JP25270595A JP3505877B2 (ja) 1995-09-29 1995-09-29 電磁機器およびその製造方法

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WO1996042096A1 true WO1996042096A1 (fr) 1996-12-27

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CN (1) CN1076509C (fr)
WO (1) WO1996042096A1 (fr)

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JP5032690B1 (ja) 2011-07-27 2012-09-26 住友電気工業株式会社 圧粉成形体
KR20130088668A (ko) * 2012-01-31 2013-08-08 삼성전자주식회사 박형 평판 화상 디스플레이 장치용 멀티 인덕터
CN102938289A (zh) * 2012-11-26 2013-02-20 哈尔滨理工大学 磁楔式可调电抗器
WO2018138909A1 (fr) * 2017-01-30 2018-08-02 日産自動車株式会社 Unité de bobine d'alimentation électrique sans contact
CN109920626B (zh) * 2019-04-17 2021-04-16 中国科学院重庆绿色智能技术研究院 一种由多个不等长气隙立柱组成的电感器
KR102464566B1 (ko) 2022-08-01 2022-11-09 (주)효진오토테크 리액터 제작 공법 개선 시스템

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Publication number Priority date Publication date Assignee Title
JPS5045902A (fr) * 1973-08-29 1975-04-24
JPH05101944A (ja) * 1991-10-08 1993-04-23 Toshiba Corp ギヤツプ付鉄心形リアクトル
JPH05111222A (ja) * 1991-10-15 1993-04-30 Mitsubishi Electric Corp 車両用交流発電機
JPH06267759A (ja) * 1993-03-10 1994-09-22 Fuji Electric Co Ltd ギャップ鉄心の締付け方法および構造

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045902A (fr) * 1973-08-29 1975-04-24
JPH05101944A (ja) * 1991-10-08 1993-04-23 Toshiba Corp ギヤツプ付鉄心形リアクトル
JPH05111222A (ja) * 1991-10-15 1993-04-30 Mitsubishi Electric Corp 車両用交流発電機
JPH06267759A (ja) * 1993-03-10 1994-09-22 Fuji Electric Co Ltd ギャップ鉄心の締付け方法および構造

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CN1161100A (zh) 1997-10-01
KR970705157A (ko) 1997-09-06
CN1076509C (zh) 2001-12-19

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