JP5969755B2 - Amorphous iron core transformer - Google Patents

Description

  The present invention relates to a transformer including an amorphous iron core and a plurality of coils into which the amorphous iron core is inserted, and more particularly to a coil structure thereof.

  In general, it is known that a transformer vibrates such that an inner coil and an outer coil thereof repel each other due to an electromagnetic mechanical force at the time of a short circuit. As the influence, for example, the bobbin may buckle inward or a gap may be formed between the inner coil and the outer coil. Thus, in the transformer, it has been a problem that fluctuations, displacements, and the like occur as influences on the coil by these electromagnetic mechanical forces. In addition, in the case of a three-phase coil or the like, the vibration of this coil is known to affect each other because there is a phase difference (for example, 120 degrees) between the coils, and the vibration also varies with time. . Due to the time difference and phase difference of vibration between the coils, it is necessary to consider the influence of an unexpected force applied to the winding of the coil and an unexpected force applied to the transformer itself.

  As background art in this technical field, there is JP-A-10-340815 (Patent Document 1). This document is intended to ensure the buckling strength of the inner and outer windings that constitute a coil in an amorphous winding core transformer comprising a plurality of coils and an amorphous winding core in which amorphous magnetic ribbons are wound in multiple layers. The problem is not to press the amorphous wound iron core and to deteriorate the iron loss and the excitation current. As a solution, at least one of the coils is provided with a coil winding frame formed of a plurality of winding frame members arranged in the width direction of the winding core material on the innermost periphery of the coil, and the outermost amorphous winding core surrounds the winding core. And it has disclosed that it has a reinforcement frame which presses the outer side of the coil in which a wound iron core is inserted.

  There is also JP-A-2010-118384 (Patent Document 2). This document is intended to ensure the buckling strength of the inner winding of the coil in the transformer and prevent the compression to the iron core. The transformer used is provided. As a solution, the iron core is composed of a wound iron core in which magnetic strips are wound in multiple layers, or a stacked iron core stacked in multiple layers, and a coil is inserted into the iron core. The coil winding frame disposed on the innermost circumference of the coil is formed in an arcuate shape on the outer side, and the strength against buckling recessed inward on the iron core side is improved. Therefore, it is described that the buckling strength with respect to the inner winding is ensured, and even in a large-capacity transformer, the iron core is not compressed and the iron loss and the excitation current are not deteriorated.

  Also, Japanese Utility Model Publication No. 54-126015 (Patent Document 3) is available. This document relates to a static induction electric machine, and more particularly, to a transformer or a reactor core and a winding fastening device. As a solution, in a static induction generator in which a coil and a winding wound around the iron core are housed in a tank together with an insulating medium, a high-strength interphase insulating member inserted between the phases of the winding, and the insulating member A stationary induction electric machine characterized in that a core yoke portion and a winding are tightened together by engaging and tightening a seat provided on a clamp sandwiching the core yoke portion via a fastening member. An iron core and winding fastening device are described.

  There is also JP-A-55-16419 (Patent Document 4). This document relates, for example, to an inner iron type transformer having a winding with a short cross section. As a solution, in an inner iron type transformer consisting of an iron core, a winding wound around the iron core, and an outer box containing the winding part, the periphery of the winding is supported by the outer box with an insulating part interposed An inner iron type transformer characterized by the above is described.

  Japanese Utility Model Laid-Open No. 3-3719 (Patent Document 5) is available. This document relates to an electromagnetic induction winding structure used for a transformer or other electromagnetic induction device. As a solution, an electromagnetic induction device is described in which the outer periphery of each phase winding arranged in parallel via an interphase spacer is collectively tightened with an insulating fixing band.

  There is also JP-A-8-222458 (Patent Document 6). This document relates to a reactor, a transformer, or the like that reduces noise and vibration, and is small and lightweight. As a solution, in a reactor transformer composed of a wound core and a plurality of coils, the coil and the coil are further fixed to the one where the wound core and the coil are fixed, thereby suppressing the vibration of the wound core. Is described.

  There is also a utility model registration No. 3063645 (Patent Document 7). This document relates to the provision of a transformer central body fixing structure that reduces the damage of the amorphous iron core. As a solution, insulating pieces and insulating plate structures are provided at the upper and lower ends of the inside of the coil, and the installation of the insulating plates is in a crossed state, covering the periphery of the amorphous iron core in a ring shape and protruding relatively high, When the insulating plate is sandwiched between the coil and the case, the amorphous core around which the coil is wound is also indirectly positioned within the coil, so that the clamping force between the coil and the case is not required for fixing the amorphous core. A structure for fixing the central body of a transformer that prevents damage to the crystalline iron core is described.

Japanese Patent Laid-Open No. 10-340815 JP 2010-118384 A Japanese Utility Model Publication No.54-126015 JP 55-16419 Japanese Utility Model Publication No.3-3719 JP-A-8-222458 Utility Model Registration No. 3063645

  A transformer is a device that converts high-voltage, small-current AC power into low-voltage, large-current AC power and vice versa, and includes an iron core that constitutes a magnetic circuit and a coil that constitutes an electric circuit. doing. FIG. 9A shows a cross-sectional view of a coil 803 of a conventional amorphous iron core transformer. When manufacturing a transformer using the amorphous iron core 802, the amorphous ribbon is very thin and difficult to form, and therefore, it is common to laminate amorphous ribbons having the same width to form a wound core. For this reason, the cross-sectional shape of the amorphous iron core 802 is substantially rectangular, and the rectangular bobbin 805 is used in accordance therewith, so that a gap 810 is generated in the straight line portion between the inner coil 807 and the rectangular bobbin 805 during winding work. As a result, assembly becomes impossible due to the coil size becoming larger than the design value, or repulsion occurs between the inner coil 807 and the outer coil 808 due to the electromagnetic mechanical force generated at the time of short circuit in the short circuit test after the transformer assembly is completed. When the electric wire falls into the gap 810 between the inner coil 807 and the rectangular bobbin 805, a gap 811 is generated between the inner coil 807 and the outer coil 808, and the short-circuit impedance is increased (FIG. 9B).

  Further, the amorphous iron core is pressed and a load is applied to the amorphous iron core, so that the no-load loss is deteriorated. As a result, the standard value may not be satisfied and the type test or the like may be rejected. In particular, large-capacity models in which the electromagnetic mechanical force at the time of a short circuit is large are difficult to manufacture due to these problems. Incidentally, the electromagnetic mechanical force of the coil is a force that acts according to the law that the electric currents flowing in the same direction at the time of short circuit are attracted and the electric wires flowing the current in the opposite direction repel each other.

  In the prior art, a press process is provided to reduce the gap, and the coil is dimensioned, which causes an increase in the number of work steps. Moreover, although there exists a method of reducing a clearance gap by winding an electric wire strongly, there exists a possibility of destroying the insulation film of an electric wire in the corner | angular part of a rectangular bobbin by winding strongly. Therefore, the present invention provides an amorphous iron core transformer having a coil with a reduced gap between the electric wire and bobbin of the coil with a simple configuration.

  In such a transformer, a silicon steel plate or an amorphous magnetic material is used as the material of the iron core, and in the wound iron core transformer in which the iron core structure is a wound iron core, the coil is deformed by buckling and compresses the wound iron core. A technique for preventing this is already disclosed in the above-mentioned patent document. The wound core transformer disclosed in these patent documents is a countermeasure taken against the buckling of the coil itself, and there are a plurality of coils, such as a three-phase transformer, when the coil is short-circuited. It does not describe that mutual influence is caused when vibrating or the like by electromagnetic mechanical force.

  However, in the case of a three-phase coil or the like, the vibration of this coil is known to affect each other because there is a phase difference (for example, 120 degrees) between the coils, and the vibration also varies with time. Yes. It is necessary to consider the influence of an unexpected force applied to the winding of the coil due to the time difference and phase difference of vibration between the coils, and an unexpected force applied to the transformer itself. For example, the adjacent coil usually serves as a presser and suppresses displacement to the outside of the coil, but the function is lost due to the time difference of vibration, so there is a gap between the inner coil and the outer coil. It can be done. It is a problem that fluctuations, displacements, etc. occur as influences on the coil by these electromagnetic mechanical forces.

  The present invention has been made paying attention to the above-described problems, and an object of the present invention is to provide a transformer that can effectively suppress fluctuations and displacements of coils caused by electromagnetic mechanical force and the like.

In order to solve the above-described problems, an amorphous iron core transformer according to the present invention assembles an amorphous iron core, a plurality of coils into which the amorphous iron core is inserted, and the coil and the amorphous iron core with the coils adjacent to each other. In a transformer having a fixed frame bracket, a plate-shaped inter-coil member interposed between the adjacent coils and a plane extending in the direction in which the plurality of coils are arranged, and the plurality of coils are fixed in the axial direction A positioning member, and the fixed frame fitting is disposed along the outer peripheral surface of the coil disposed on the outer peripheral side of the plurality of coils, and is substantially parallel to the plate-shaped inter-coil member. And the positioning member spreads in a direction substantially perpendicular to the plate-shaped coil retainer and the plate-shaped inter-coil member. It has a surface, and characterized in that a plurality of the plate-like coil between members interposed and fixed by recess-projection engaging between the plurality of coils.

The amorphous iron core transformer according to the present invention includes an amorphous iron core, a plurality of substantially elliptical coils into which the amorphous iron core is inserted, and a fixed assembly in which the coil and the amorphous iron core are assembled with the coils adjacent to each other. A transformer comprising a frame metal fitting, having an inter-coil member having a shape along the outer shape of the substantially elliptical coil interposed between the coils, and a plane extending in a direction in which the plurality of coils are arranged; A positioning member that fixes a plurality of coils in the axial direction, and the fixed frame bracket includes a plate-shaped coil presser bracket that is disposed on the outer circumferential side of the coil that is disposed on the outer circumferential side of the plurality of coils. , the positioning member has the plate-like coil pressing fixture and before Kiko yl between the members and generally planar extending perpendicular direction and a plurality of the plates interposed between the plurality of coils Wherein the of have a coil between members fixed by recess-projection engaging.

Also, amorphous core transformer of the present invention is characterized in that it comprises a duct for cold却用between the coil and the amorphous iron core.

  According to the present invention, the inter-coil member that is positioned between a plurality of adjacent coils and fills the gap between the coils is disposed, and the positioning member that sandwiches and holds the inter-coil member from above and below or from the front and rear is provided. The coil displacement and fluctuation can be suppressed. That is, for example, it is known that a three-phase coil vibrates so that the displacement directions of the inner coil and the outer coil constituting each coil are repelled in opposite directions by an electromagnetic mechanical force at the time of a short circuit. In the case of a three-phase coil or the like, the vibration of this coil has a phase difference (for example, 120 degrees) between the coils. For example, at a certain moment, one adjacent coil vibrates so that the outer coil is displaced in the direction of the other adjacent coil due to the repulsion of the inner coil and the outer coil, but between the coils interposed between the coils. The displacement and fluctuation of the coil can be suppressed by the member.

It is a schematic explanatory drawing of the transformer which shows Example 1 of this invention. FIG. 5 is a perspective view of the positioning member disassembled with the fixed frame metal fitting omitted. It is the perspective view which abbreviate | omitted the fixed frame metal fitting which shows Example 2 of this invention, and decomposed | disassembled the positioning member. It is a schematic explanatory drawing of the transformer which shows Example 3 of this invention. It is a schematic explanatory drawing of the transformer which shows Example 4 of this invention. It is an expanded sectional view of the coil in each Example of this invention. (A) (B) It is explanatory drawing which shows another method of forming a coil by the shape close | similar to elliptical shape. (A) (B) (C) It is explanatory drawing which shows another method of forming a coil by the shape close | similar to an elliptical shape. (A) (B) It is sectional drawing which shows the coil shape of the conventional amorphous iron core transformer.

  Embodiments of the present invention will be described below with reference to the drawings. In the description of this embodiment, the front-rear and left-right directions are defined with reference to FIGS. (X positive direction is defined as right, Y positive direction is defined as rear, and Z positive direction is defined as upward.)

  FIG. 1 is a schematic explanatory diagram showing the configuration of the transformer of the present invention. As shown in the figure, the transformer 100 of this embodiment includes an amorphous iron core 101, a coil 102 inserted so as to be linked to the amorphous iron core 101, and a fixed frame fitting 110 for fixing them. Moreover, the transformer 100 of the present embodiment is a three-phase five-leg wound core transformer having three-phase coils 102... And four amorphous iron cores 101. Coils 102... And four amorphous iron cores 101... (Front side) are adjacently assembled to the fixed frame metal 110.

  The fixed frame bracket 110 includes an upper clamp 103 that covers the upper part of the amorphous iron core 101, a lower clamp 104 that supports the coil 102, and a coil presser bracket 105 that supports both sides of the coils 102 and 102. The fixed frame metal fitting 110 is constructed by assembling the metal fitting 103, the lower fastening metal fitting 104, and the coil holding metal fitting 105 into a frame shape. Further, an inter-coil member 106 is disposed between a plurality of adjacent coils 102 to fill the gap between the coils 102, and the inter-coil member 106 is sandwiched from above and below so that each inter-coil member 106 is A positioning member 107 for positioning and holding is provided. This positioning member 107 is positioned above and below each coil 102... And is disposed between the front amorphous core 101.. And the rear amorphous core 101. Note that the lower positioning member 107 is not visible in the figure.

  FIG. 2 is a perspective view showing the relationship between the shapes of the inter-coil member 106 and the positioning member 107 and the mutual relationship in an easy-to-understand manner by omitting the fixed frame fitting 110 from FIG. The inter-coil member 106 interposed between the adjacent coils 102 projects a part of the upper side and the lower side to form a positioning projection 106a (in the drawing, the positioning projection 106a on the lower side is not visible), and the positioning member A positioning groove 107a for positioning the positioning protrusion 106a at a predetermined position is formed in 107, and the inter-coil member 106 is positioned by the upper and lower positioning members 107 by engaging the positioning protrusion 106a with the positioning groove 107a. keeping.

  In other words, the upper and lower positioning members 107 are set to have the same length in the X direction as the lengths of the upper fastener 103 and the lower fastener 104 in FIG. 1 in the X direction. Displacement in the X direction is restricted by the coil presser fittings 105 arranged on both sides of 104. As a result, the inter-coil member 106 positioned by the positioning member 107 is not displaced in the X direction within the fixed frame fitting 110. In this way, by interposing the inter-coil member 106 positioned and held with respect to the fixed frame metal 110 between the adjacent coils 102..., The coil 102 can be deformed and displaced beyond the inter-coil member 106. It is lost (that is, the adjacent coil is not deformed or displaced), and the shape of the coil 102 can be maintained. In addition, coil holding fittings 105 are disposed on both sides of the coils 102 and 102 located on both sides, and displacement in the X direction is restricted by the coil holding fittings 105.

  Further, in general, for the purpose of suppressing the displacement of the coils 102... In the axial direction (Z direction) and the purpose of filling the gap between the amorphous iron cores 101 divided forward and rearward and suppressing the swing of the amorphous iron core 101, the coils 102. Although the restriction plate for holding the coil is arranged so as to be in contact with the upper and lower sides, in this embodiment, the function as the restriction plate is shared by the positioning member 107. That is, the positioning member 107 that can be used for the purpose of suppressing the displacement of the coils 102... In the axial direction (Z direction) and the purpose of filling the gap between the amorphous cores 101 divided forward and backward to suppress the deflection of the amorphous cores 101. By simply forming the positioning groove 107a for positioning the positioning protrusion 106a of the inter-coil member 106, the function of fixing the inter-coil member 106 can be added without impairing the conventional function.

  As described above, the inter-coil member 106 is interposed between the adjacent coils 102 and 102, and the position of the inter-coil member 106 is held at a predetermined position by the positioning member 107. , Fluctuations can be suppressed.

  Here, an enlarged sectional configuration of the coil in each embodiment of the present invention will be described. That is, as shown in FIGS. 6A and 6B, the three-phase coils 302... In each embodiment of the present invention are composed of an inner coil 308 and an outer coil 309. Thus, it is known that the inner coil 308 constituting the coil 102 and the outer coil 309 vibrate so that the directions of displacement are repelled in opposite directions (FIG. 9B). In the case of a three-phase coil or the like, the vibration of the coil 102 is a phase difference (for example, 120 degrees) between the coils, and the vibration is also temporally different. Therefore, adjacent coils affect each other. Yes. For example, at a certain moment, the A coil 102 vibrates so that the outer coil 309 is displaced in the direction of the B coil 102 due to the repulsion of its inner coil 308 and the outer coil 309, but at the next moment, The B coil 102 vibrates so that the outer coil 309 is displaced in the direction of the A coil 102 due to the repulsion of the inner coil 308 and the outer coil 309. Therefore, if the inter-coil member 106 interposed between the coils 102 is not firmly fixed without a gap, it is displaced in accordance with the vibration of the outer coil 309. However, in the present invention, the function of suppressing the displacement and fluctuation of the coil 102 can be achieved with a simple configuration by reliably positioning and holding the inter-coil member 106 by the positioning member 107.

  The positioning member 107 and the inter-coil member 106 need to be made of a material having strength that can withstand the electromagnetic mechanical force during a short circuit. In addition, it is necessary to consider insulation, for example, it is preferable to use an insulating member such as a veneer plate or an epoxy plate. However, if insulation measures can be taken reliably, a steel plate with high mechanical strength, etc. Can also be used and is effective. The shape of the inter-coil member 106 can be a flat plate, but the portion in contact with the adjacent coil 102 is matched with the outer shape of the substantially elliptical coil 102 as shown in FIGS. Since the contact area between the coil 102 and the inter-coil member 106 can be increased by forming the inter-coil member 306 having a concave curved portion at the center, the deformation of the coil 102 Variation can be suppressed.

  Further, in each embodiment of the present invention, as shown in the enlarged cross-sectional views of FIGS. 6A and 6B, the coil 102 has an inner coil 308 and an outer side on a rectangular bobbin 310 on which four iron cores 301 are arranged. In order to reduce the size of the gap generated between the inner coil 308 and the rectangular bobbin 310, four arc-shaped spacers are provided on the front and rear sides and the left and right sides of the rectangular bobbin 310. 311 is arranged. Thus, the spacer 311 serves as a guide for the corner portion of the rectangular bobbin 311, and the angle between the first step of the inner coil 308 and the portion where the rectangular bobbin 310 abuts becomes loose. Further, the shape of the spacer 311 is not limited to an arc shape, and may be a square shape, a trapezoidal shape, a staircase shape, or the like as long as the space between the rectangular bobbin 310 and the inner coil 308 can be reduced. In order to mitigate the temperature rise of the coil 102, a plurality of cooling ducts 509 corresponding to the coil temperature rise can be provided inside the coil 102. Thus, by making the coil formed by winding into a shape close to an elliptical shape instead of a rectangular shape, an effect of preventing a gap from being formed between the coil and the bobbin can be achieved.

  In this way, by interposing the spacer 311 between the rectangular bobbin 310 and the coil 102, the inner coil 308 is also against the repulsive force acting between the inner coil 308 and the outer coil 309 by the electromagnetic mechanical force at the time of short circuit. Since there is no gap between the rectangular bobbin 310 and the inner coil 308, there is no space where the inner coil 308 falls, and the rate of change in short-circuit impedance after short-circuiting and the rate of deterioration in no-load loss can be reduced.

  Instead of the embodiment shown in FIGS. 6A and 6B, the coil 102 can be formed in a shape close to an elliptical shape by arranging a plurality of cooling ducts inside the coil 102. Here, several methods for forming the coil 102 in a shape close to an elliptical shape by other methods will be described.

  The method shown in FIG. 7A is a sectional view of a coil 302 of an amorphous iron core transformer, in which a cylindrical bobbin 310 is provided outside the amorphous iron core 301, and an inner coil 308 and an outer coil 309 are provided on the cylindrical bobbin 310. Wind it. The arc-shaped spacer 311 is provided between the rectangular amorphous iron core 301 and the cylindrical bobbin 310 to form a coil 302 having a circular cross section.

  The method shown in FIG. 7B is a cross-sectional view of the coil 403 of the amorphous iron core transformer according to the present invention, in which a rectangular bobbin 405 is provided outside the amorphous iron core 402, and the inner coil 407 and the outer coil 405 are provided on the rectangular bobbin 405. The coil 408 is wound. Two arcuate spacers 406 are bonded to each other and provided between the inner coil 407 and the outer coil 408 to form a coil 403 having a circular cross-sectional shape.

  The method shown in FIG. 8A is a cross-sectional view of a coil 503 of an amorphous iron core transformer according to the present invention, in which a rectangular bobbin 505 is provided outside the amorphous iron core 502, and an inner coil 507 and an outer coil 505 are arranged on the rectangular bobbin 505. The coil 508 is wound. Usually, the number of cooling ducts 509 corresponding to the coil temperature increase is provided in the coil 503 to alleviate the temperature increase. In this embodiment, the insertion section of the cooling duct 509 provided in the inner coil 507 is equal to or less than the section of the cooling duct provided outside than the section of the cooling duct provided inside, and the cross-sectional shape is circular. A coil 503 is formed. Alternatively, the insertion section of the cooling duct 509 ′ provided in the inner coil 507 is equal to or greater than the section of the cooling duct provided outside than the section of the cooling duct provided inside, and the coil 503 having a circular cross-sectional shape is used. Form.

  The method shown in FIG. 8B is a cross-sectional view of a coil 603 of an amorphous iron core transformer according to the present invention, in which a rectangular bobbin 605 is provided outside the amorphous iron core 602, and an inner coil 607 and an outer coil 605 are provided on the rectangular bobbin 605. The coil 608 is wound. In this embodiment, the width of the cooling duct 609 provided in the inner coil 607 is equal to or larger than the width of the cooling duct provided at both ends and the width of the cooling duct provided in the center of the straight portion is equal to or larger than the width. A circular coil 603 is formed.

  The method shown in FIG. 8C is a cross-sectional view of the coil 703 of the amorphous iron core transformer according to the present invention, in which a rectangular bobbin 705 is provided outside the amorphous iron core 702, and the inner coil 707 and the outer The coil 708 is wound. In the present embodiment, the coil 703 having a circular cross section is formed by providing the cooling duct 709 provided in the inner coil 707 only at the center of the straight portion.

  FIG. 3 is a schematic explanatory diagram illustrating a configuration of a transformer illustrating the second embodiment of the present invention. In the first embodiment, an example in which the inter-coil member 106 that suppresses deformation and displacement of the coil 102 is sandwiched from above and below by the positioning member 107 and held is shown. However, in the second embodiment, the positioning member 411 is used as the coil 402. It is arranged before and after. That is, in the first embodiment, the purpose is to suppress the deviation of the coils 102... In the axial direction (Z direction), and the restriction plate that suppresses the deflection of the amorphous iron core 101 by filling the gap between the amorphous iron cores 101 divided in the front and rear positions is positioned. Although used as the member 107, there is a transformer having a configuration without such a restriction plate. In such a transformer, the coil holding member 411 is disposed before and after the coil 402, and the inter-coil member 406 disposed between the coils 402 is engaged with the positioning groove 411a formed in the coil holding member 411. The intermediate member 106 is positioned and held. Thereby, the displacement and fluctuation | variation of the coil 402 can be suppressed by the positioning member 411 similarly to the said Example 1. FIG. In FIG. 3, 401 is an amorphous iron core.

  Further, the configuration of the transformer is not limited to the three-phase five-leg wound core transformer provided with three coils and four amorphous iron cores, but three coils as in the third embodiment of the present invention shown in FIG. A three-phase tripod-wound core transformer having 502... And three amorphous iron cores 501. Further, the positioning structure of the inter-coil member in the third embodiment shown in FIG. 4 is similar to the second embodiment in FIG. 3 in that the coil holding members 511 are arranged in front of and behind the coil 502, and the positioning groove formed in the coil holding member 511. The inter-coil member 506 is engaged with 511a, and the inter-coil member 506 is positioned and held.

  Further, as in the fourth embodiment of the present invention shown in FIG. 5, a single phase transformer including two coils 602... And one amorphous iron core 601. Moreover, the positioning structure of the member between coils in Example 4 of this invention shown in FIG. 5 is the same structure as Example 1 shown in FIG. That is, the coil holding member 611 is arranged above and below the coil 602, and the positioning protrusion 606a formed on the inter-coil member 606 is engaged with the positioning groove 611a formed on the coil holding member 611, thereby positioning and holding the inter-coil member 506. doing.

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to each said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, it is not necessary to provide all the configurations including the spacer and the cooling duct shown in the first embodiment. In addition, an example in which a notch-shaped positioning groove that fits with the inter-coil member is provided in the positioning member as a positioning portion of the inter-coil member has been shown. What is necessary is just to select suitably the structure which fits a member. Furthermore, a part of the configuration of the first embodiment can be replaced with the configuration of the second embodiment, and the configuration of one embodiment can be added to the configuration of another embodiment, or a part of the configuration can be added. It is also possible to replace and delete.

100 Transformer 101, 401, 501, 601 Amorphous iron core 102, 302, 402, 502, 602 Coil 103 Upper clamp 104 Lower clamp 105 Coil clamp 106, 406, 506, 606 Intercoil members 106a, 606a Positioning protrusion 107, 411, 511, 611 Positioning member 107a, 411a, 511a, 611a Positioning groove (positioning part)
110 Fixed frame metal fitting 306 Bending portion 308 Inner coil 309 Outer coil 310 Rectangular bobbin 311 Spacer

Claims (3)

In a transformer comprising an amorphous iron core, a plurality of coils into which the amorphous iron core is inserted, and a fixed frame fitting for assembling the coil and the amorphous iron core with the coils adjacent to each other,
A plate-like inter-coil member interposed between the adjacent coils;
A positioning member that has a flat surface that extends in the direction in which the plurality of coils are arranged, and that fixes the plurality of coils in the axial direction;
The fixed frame metal fitting is arranged so as to be along an outer peripheral surface of a coil arranged on the outer peripheral side among the plurality of coils, and has a plate-like shape having a plane extending in a direction substantially parallel to the plate-like inter-coil member. Including coil retainer,
The positioning member has a flat surface extending in a direction substantially perpendicular to the plate-shaped coil pressing metal fitting and the plate-shaped inter-coil member, and includes a plurality of the plate-shaped inter-coil members interposed between the plurality of coils. An amorphous iron core transformer characterized by being fixed by uneven engagement. In a transformer comprising an amorphous iron core, a plurality of substantially elliptical coils into which the amorphous iron core is inserted, and a fixed frame fitting for assembling the coil and the amorphous iron core with the coils adjacent to each other,
An inter-coil member interposed between the coils and shaped along the outer shape of the substantially elliptical coil;
A positioning member that has a flat surface that extends in the direction in which the plurality of coils are arranged, and that fixes the plurality of coils in the axial direction;
The fixed frame metal fitting includes a plate-shaped coil holding metal fitting arranged on the outer circumferential side of the coil arranged on the outer circumferential side of the plurality of coils,
The positioning member has a flat surface extending in a direction substantially perpendicular to the plate-shaped coil retainer and the inter-coil member, and has a plurality of plate-shaped inter-coil members interposed between the coils. Amorphous iron core transformer characterized by being fixed by. The amorphous iron core transformer according to claim 2,
Amorphous core transformer, characterized in that it comprises a duct for cooling the inside of the front Symbol coil.

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