JP2746028B2 - Electromagnetic induction equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to downsizing of an electromagnetic induction device combined with a single-phase device.

[0002]

2. Description of the Related Art FIG. 2 shows a conventional example of an electromagnetic inductor in which two single-phase devices are combined. In the figure, reference numeral 1 denotes a single-phase three-leg iron core, and a winding 2 is wound around a main leg (central leg) thereof. 3 is a storage tank.

In this configuration, when the major axis (width) dimension of the storage tank 3 is X and the minor axis (depth) dimension is Y,
If the winding diameter is A, the iron core diameter is B, the insulation dimension between the winding 2 and other members is C, and the separation dimension between the iron core 1 and the storage tank 3 is D, X and Y are expressed as

X = 2A + 3C (1)

Y = A + B + 2C + 2D (2)

[0006]

As described above, in the prior art, since the windings of the adjacent single-phase devices are opposed to each other in the direction in which the single-phase devices are arranged, the insulation dimension C is set to be smaller in the major axis direction of the storage tank 3. Since it is necessary to take the length, the major dimension X becomes larger, and since the three-legged iron core 1 is used, the insulation interval between the winding 2 and the iron core leg must be set at both leg sides of the iron core. Diameter Y
However, there is a problem that the size is increased and the size is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve this problem, and an object of the present invention is to provide an electromagnetic induction device which combines a plurality of single-phase devices but can be made smaller than before.

[0008]

According to the present invention, in order to achieve the above object, in an electromagnetic induction apparatus which is housed in a tank by combining single-phase devices, each of the single-phase devices has a winding wound around one leg. In the rotated two-leg core structure, adjacent single-phase devices are arranged such that legs having windings and legs not having windings substantially oppose each other.

[0009]

According to the present invention, since the windings of the adjacent single-phase devices do not face each other in the tank width direction, there is no need to provide an insulation interval between the two windings in the tank width direction. Since it is a leg iron core, the only required insulation distance between the iron core and the tank is the insulation distance between one leg having no winding and the tank.

[0010]

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a single-phase two-leg iron core, and a winding 2 is wound around one of the legs to constitute one single-phase device. The storage tank 3 stores two of the single-phase devices in parallel, but the leg having the winding of one single-phase device is on the leg side having no winding of the other single-phase device, and both legs are The arrangement is slightly shifted in the direction perpendicular to the single-phase device parallel direction, and the windings 2 of the two single-phase devices 1 are obliquely opposed to the single-phase device parallel direction.

Therefore, the major axis dimension of the storage tank 3 is X and the minor axis dimension is Y.

X = 2A + 2C (3)

Y = A + B + 2C + D (4), and the major dimension X can be reduced by C and the minor dimension Y can be reduced by D as compared with the conventional one shown in FIG.

In the above embodiment, two units are combined with a single-phase unit. However, as shown in FIG. 3, when a larger number of units are combined, a larger size reduction effect can be obtained. be able to.

[0016]

As described above, according to the present invention, it is not necessary to set the insulation interval between the windings of the adjacent single-phase units in the tank width direction, and the insulation interval between the iron core and the tank can be reduced. , The required size of the storage tank can be reduced accordingly.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing an embodiment of the present invention.

FIG. 2 is a plan view schematically showing one example of a conventional electromagnetic inductor.

FIG. 3 is a plan view schematically showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Single phase 2 leg core 2 Winding 3 Storage tank

Claims (1)

(57) [Claims] In an electromagnetic induction apparatus which is housed in a tank by combining single-phase devices, each of the single-phase devices has a two-leg core structure in which a winding is wound around one leg, and is adjacent to each other. An electromagnetic induction device, wherein the single-phase devices are arranged such that legs having windings and legs not having windings substantially oppose each other.