JPS5831377Y2 - 3-phase butting type deformed wound core - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a three-phase butting type deformed wound core.

Hereinafter, the structure of the present invention will be explained by giving an example and referring to the drawings.

In FIGS. 1 and 2, a directional or non-oriented silicon steel strip is wound in an annular shape and heat-treated to transform it into a rectangular shape. 1. Three elliptical iron core legs formed by winding a piece into an annular shape, heat-treated to transform it into an elliptical shape so that the magnetic flux passes through the silicon copper body in a direction perpendicular to the winding, and providing a cutting groove in the axial direction.1. 1', 1
'' are made to abut on the upper and lower surfaces of the core leg, and a magnetic paste 7 containing a mixture of magnetic powder and adhesive is applied to both sides of a heat-resistant insulating paper 6 at the abutting portion as shown in FIG. The interlinkage prevention plates 3.3', 4.4', and 5.5' are inserted to form the three-phase abutting type deformed wound core of the present application.

Iron core leg 1.1'. 1" and yoke cores 2, 2' are elliptical in cross section as shown in FIGS. The width of the rectangular yoke core is equal to A, and the core legs are 1.1',
The long diameter of the 1" cross section is made smaller than the length B of the short side 8 of the rectangular yoke core.

Therefore, the abutting portion between the yoke cores 2, 2' and the core legs 1.1', 1'' is the short side 8 of the cross section of the yoke core, as shown in FIG.
The elliptical core legs 1' make their major diameters horizontal, and the core legs 1 and 1'' on the long sides 9 and 10 on the left and right sides of the cross section of the yoke core make their major diameter vertical. The core legs 1', 1", 1" are arranged so as to be located at the vertices of an isosceles triangle.

Further, reference numeral 11 indicates a cutting groove provided along the vertical axis in the core legs 1' and 1.1'' to prevent a circulating current from flowing through the core legs.

12.13 in Figures 1 and 2 are core legs 1' and 1, respectively.
The primary coil and the secondary coil are wound with a gap 14 maintained at 1".

The present invention has an oblique structure (1) Rectangular yoke cores 2, 2' and elliptical core legs 1.
．． 1' and 1'', the rectangular yoke core and the core windings of the elliptical core legs are interlinked, so if they are directly abutted, a vortex will flow in the abutment part. However, in this application, anti-linkage plates 3, 3' and 4 are used, in which magnetic paste 1 to 7 is applied to both sides of heat-resistant insulating paper 6, although this may cause loss.
．． 4' and 5.5' are inserted, it is possible to prevent interlinkage of induced voltage generated between the rectangular yoke core and the elliptical core.

(2) Core legs each having an elliptical cross section are provided on the short side 8 and the long sides 9 and 10 of the yoke core having a rectangular cross section.
Located at the apex of an equilateral triangle, the magnetic path length of each of the three phases is minimized, and the magnetic properties of the core are excellent. Since the portions ADB, CEB, and AFC in FIG. 1 are open to the outside, heat radiation from the coil and iron core is good and uniform.

(3) The core of the present application has a rectangular cross section, and when a coil is wound around the leg core, the entire body is rectangular as shown by the broken line P in the plan view of Figure 1, and when housed in a square case, Space Pakutanicho Yuraku) is extremely high-quality.

It has the characteristics and advantages of -1>t, and is highly effective when used in the field of three-phase transformers.

[Brief explanation of the drawing]

Figure 1 is a plan view of the present invention, Figure 2 is a front view, and Figure 3 is a front view of the present invention.
Figure a is a plan view of the interlinkage prevention plate used in the present application, Figure 3 is a sectional view of A' and A' in figure a, and Figure 4 is a diagram of the relative arrangement of the yoke core and core legs in the invention of the present application. It is. 1.1', 1"...Oval shaped core leg Mi 2,2'
・・・・・・Rectangular yoke core, 3.3', 4.4',
5.5'...Anti-linkage plate, 6...Heat-resistant insulating paper, 7...Magnetic spacer, 8...J...Short side of yoke core, 9, 10...Long side of yoke core, 11, wealth...Cutting groove of core leg, 12...
・Secondary coil, 13...Secondary coil, 14...
····gap. ] ,

Claims (1)

[Scope of utility model registration request] A oriented silicon steel strip or a non-oriented silicon steel strip is wound in an annular shape and deformed into a rectangular shape, and a grain oriented silicon steel strip is wound in an annular shape between the upper and lower rectangular yoke cores. Three elliptical core legs are deformed into an elliptical shape and have cutting grooves in the axial direction to allow magnetic flux to pass in a direction perpendicular to the rotating direction.
One of the core legs is attached to the short side of the yoke core, and two of the core legs are attached to the short side of the yoke core.
3, respectively located on the long side of the yoke core, and
The upper and lower surfaces of the core legs abut against the yoke core so that the core legs are located at the three vertices of an isosceles triangle, and magnetic powder is applied to both sides of the heat-resistant insulating paper at the abutting portions. A three-phase abutting type deformed wound core constructed by inserting an anti-linkage plate coated with a magnetic paste made of a mixture of adhesive and adhesive.