JPH05267070A - Self-cooled reactor unit for vehicle - Google Patents

Abstract

PURPOSE:To improve a radiating effect and reduce the size and weight, by providing first spacers placed vertically at the upper part, and second spacers placed in a reverse 'v' shape with a space from the lower end of the first spacer at the lower part of each unit coil. CONSTITUTION:Strip-shaped spacers 2A and 2B are made of an epoxy resin laminated board containing a glass fiber and are piled between each unit coil 1 and also on the outside thereof. The spacers 2A are placed vertically on right and left sides above a central part of the unit coil 1. Also strip-shaped spacers 2B made of the same material as the spacer 2A and smaller in width than the spacers 2A are placed in a reverse 'v' shape oppositely at each lower corner. In the hollow space of the piled unit coils 1, an iron core 7 of magnetic piled steel plates is inserted and fixed. In this way, radiating effect is improved and a self-cooled reactor unit for vehicles with reduced size and weight can be provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle self-cooling reactor unit mounted on a vehicle body of a railway vehicle.

[0002]

2. Description of the Related Art FIG. 5 is a vertical cross-sectional view of a conventional horizontal self-cooling reactor unit for a vehicle mounted on a vehicle body of a railway vehicle for suppressing pulsation of a main circuit current as seen from the vehicle body side.
6 shows a sectional view taken along line CC of FIG.

In FIGS. 5 and 6, a mounting bracket 6a is provided on the lower surface of a pair of U-shaped vehicle body beams 6 provided in the vertical direction at the lower part of the chassis of a railroad car (not shown) in a direction orthogonal to the longitudinal direction of the car. It is fixed with bolts. The upper end of the box body 3 made of a mild steel plate in which the punching holes 3a are punched out in a grid pattern is fixed to these mounting fittings 6a by welding in advance. Inside the box body 3, four support frames 15 are erected on the upper and lower ends thereof, with flange portions 15a welded to each other.

Between these support frames 15, strip-shaped spacers made of epoxy resin laminated plate containing glass fibers are provided.
12 and unit coils 1 whose outer periphery is covered with vacuum impregnation of epoxy resin are alternately stacked. The spacer 12 and the unit coil 1 are tightened together with the support frames 15 on both sides as shown in FIG. 6 with the screw bolts 4 inserted through the upper and lower ends and the middle portion of the left and right support frames 15 in FIG. ing.

Each unit coil 1 is formed by stacking a tape made of a glass base material on one side of a strip-shaped steel plate and wound in a spiral form from the inside to the outside, and then the glass tape on the outer periphery excluding the mouth portion. Is wrapped around and impregnated with the epoxy resin as described above. As shown in FIGS. 1 and 2, each of these unit coils 1 includes a support frame 15, a spacer 12, and a double screw bolt 4
After assembled in, the lead portions (not shown) are connected to each other in series by brazing.

In the vehicle self-cooling reactor unit thus constructed, the traveling direction of the vehicle is indicated by the arrow G in FIG.
In the direction indicated by 1, the cooling air indicated by the arrow E in FIG. 5 enters through the punching hole 3a on the side of the arrow G1 of the box 3, and the left end of each unit coil 1 in FIG. After flowing through, each unit coil 1 is cooled.

By the way, in this horizontal type self-cooling reactor unit for a vehicle, the main magnetic flux generated by the current flowing through the self-cooling reactor unit for a vehicle becomes parallel to the floor surface of the vehicle body. It is often used because it has little effect on personal belongings.

[0008]

However, in this self-cooling reactor unit for a vehicle of the horizontal type, the heat dissipation of the unit coil 1 is inferior to that of the vertical type. Therefore, the longitudinal section of the wire is increased and the current density is reduced. The amount of heat generated is suppressed. Therefore, the outer shape becomes large and the weight also increases, which is an obstacle to speeding up the railway vehicle.

For this reason, there is a method in which an electric blower is attached to the side and the coil is cooled by forced air cooling to make it smaller, like the vehicle reactor disclosed in Japanese Utility Model Laid-Open No. 59-98632. Not only increases the maintenance and inspection work of the electric blower, but also increases the weight of the electric blower, which is an obstacle to reducing the weight of the vehicle. Therefore, the first and second
SUMMARY OF THE INVENTION It is an object of the invention to obtain a horizontal vehicle self-cooling reactor unit capable of enhancing the air cooling effect and reducing the outer shape and weight.

[0010]

SUMMARY OF THE INVENTION A first aspect of the present invention is a horizontal type vehicle, which is cooled by cooling air generated by traveling of a vehicle body and is formed into a tubular shape by stacking a plurality of unit coils via strip spacers. In the self-cooling reactor unit, the spacer is
It is composed of a first spacer that is vertically provided parallel to the upper part of each unit coil, and a second spacer that is provided in a V shape at a lower part of each unit coil to form a gap with the lower end of the first spacer. It is characterized by having done.

A second aspect of the present invention is a horizontal type vehicle which is cooled by cooling air generated by traveling of a vehicle body, is formed into a tubular shape by stacking a plurality of unit coils via strip-shaped spacers, and has an iron core inserted therein. In the self-cooling reactor unit for a vehicle, a spacer is provided vertically above and parallel to each unit coil.
And a second spacer provided in a V shape with a gap formed between the lower end of the first spacer and the lower end of each unit coil.

[0012]

In the first invention, the gap formed between the lower end of the first spacer and the upper end of the second spacer, and the second
The inside of each unit coil is cooled by the cooling air that flows into the tubular portion from below the spacer and rises.

Further, in the second aspect of the invention, the gap formed between the lower end of the first spacer and the upper end of the second spacer, and the cooling that flows into the tubular portion from below the second spacer and rises. The wind cools each unit coil and iron core.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the vehicle self-cooling reactor unit of the first invention will be described below with reference to the drawings. However, the same parts as those of FIG. 5 and FIG. 6 showing the prior art are designated by the same reference numerals and the description thereof will be omitted. FIG. 1 is a longitudinal sectional view showing a self-cooling reactor unit for a vehicle of the present invention, a view corresponding to FIG. 5 of the related art, and FIG. 2 is a sectional view taken along the line AA of FIG.
2 and FIG. 3 are sectional views taken along line BB of FIG.

1, FIG. 2 and FIG. 3, vertically between the unit coils 1 overlapped with each other and outside the unit coils 1 at the left and right ends in FIG. The strip-shaped spacers 2A made of epoxy resin laminated plates containing glass fibers are respectively stacked,
As shown in FIGS. 1 and 3, strip-shaped spacers 2B made of the same material as the spacer 2A and having a slightly narrower width are piled up in a V shape at the lower left and right corners.

These unit coil 1 and spacers 2A, 2
On the outer side of B, support frames 5A and 5B having a trapezoidal wide bottom from the middle portion are stacked. The unit coils 1, the spacers 2A and 2B, and the support frames 5A and 5B are fastened at their upper ends with two screw bolts 4 which penetrate the upper ends of the support frames 5A and 5B and the spacer 2A. Similarly, the upper middle portions of the support frames 5A and 5B and the upper intermediate portions are tightened by the screw bolts 4 penetrating the lower ends of the spacers 2A.
The lower middle portion of A, 5B and the upper lower portion of the spacer 2B are fastened with both screw bolts 4 and the lower lower portion is fastened with the double screw bolts 4 passing through the lower ends of the support frames 5A, 5B and the spacer 2B. ing.

In the vehicle self-cooling reactor unit thus constructed, when the traveling direction of the vehicle is the direction shown by arrow G1 in FIGS. 1 and 3, the left side of the box body 3 (that is, the traveling direction side). A part of the cooling air that has entered the inside from the punching holes 3a as indicated by the arrow D1 passes upward between the left parts of the unit coils 1 as shown in FIGS. Further, as shown by the arrows D2 and D3, a part of the spacer 2B intrudes into the central portion of each unit coil 1 from below the spacer 2B on the left side and rises.
From between 2B, it flows into the central portion of each unit coil 1 and rises as indicated by arrow D3. Further, the remaining part flows upward between the upper and lower spacers 2A and 2B on the right side, as shown by arrow D4, and rises upward.

On the contrary, when the traveling direction of the vehicle is the direction shown by the arrow G2 in FIGS. 1 and 3, the right side of the box body 3 (that is,
Arrow E indicated by a dotted line from the punching hole 3a (on the traveling direction side)
As shown by 1, some of the cooling air that has entered the inside passes upward on the right side of each unit coil 1. Also, as shown by dotted line arrows E2 and E3, a part of the part intrudes into the central part of each unit coil 1 from below the spacers 2A and 2B on the right side and ascends. Spacer 2A, 2B
From the space between the upper and lower spacers 2 on the left side as shown by arrow E3.
It flows up between A and 2B to the left and rises.

Therefore, in the vehicle self-cooling reactor unit thus constructed, a part of the cooling air flowing into the box body 3 from the traveling direction side is used for each unit coil 1.
Since it can be penetrated to the central part and the side opposite to the traveling direction, the cooling effect of each unit coil 1 can be improved, and the temperature rise of each unit coil 1 can be prevented without increasing the cross-sectional area of the wire. It is possible to prevent deterioration of the interlayer insulation and the outer periphery insulation and reduce the weight.

FIG. 4 is a partial cross-sectional view showing a vehicle self-cooling reactor unit of the second invention, which is a view corresponding to FIG. In FIG. 4, an iron core 7 having electromagnetic iron plates stacked therein is inserted and fixed in the hollow portion of the stacked unit coils 1 to form a vehicle-mounted self-cooling reactor unit with an iron core.

Also in this case, when the vehicle travels in the direction of arrow H1, as shown by arrows D2 and D3, a part of the cooling air passes through the inside of the left side of the iron core 7 inside the unit coil 1 and rises. Further, since the remaining part can be made to flow in the direction opposite to the traveling direction as shown by the arrow D4, each unit coil 1 and the iron core 7 can be cooled.

[0022]

As described above, according to the first aspect of the present invention, for a horizontal type vehicle, which is cooled by cooling air generated by traveling of the vehicle body and is formed into a tubular shape by stacking a plurality of unit coils via strip spacers. In the self-cooling reactor unit, a spacer is formed in a letter V shape by forming a gap between the first spacer vertically provided above each unit coil and the lower end of the first spacer below each unit coil. By configuring with the provided second spacer, the gap formed between the lower end of the first spacer and the upper end of the second spacer and the lower spacer of the second spacer flow into the tubular portion and rise. Since the inside of each unit coil is also cooled by the cooling air, it is possible to obtain the vehicle self-cooling reactor unit that can enhance the air cooling effect and reduce the outer shape and weight.

According to the second aspect of the invention, the unit core is cooled by cooling air generated by traveling of the vehicle body, is formed into a tubular shape by stacking a plurality of unit coils via strip spacers, and the iron core is inserted inside. In the horizontal self-cooling reactor unit for a vehicle, a spacer is provided with a first spacer provided vertically above the unit coils and a first spacer provided below the unit coils.
And a second spacer provided in a V shape so as to form a gap with the lower end of the spacer, and a gap formed between the lower end of the first spacer and the upper end of the second spacer. Since the inner circumference of each unit coil and the iron core are cooled by the cooling air that flows into the tube portion from below the spacer of No. 2 and rises, a self-cooling reactor unit for a vehicle that can improve the air cooling effect and reduce the outer shape and weight can be provided. Obtainable.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a vehicle self-cooling reactor unit of a first invention.

FIG. 2 is a sectional view taken along line AA of FIG.

3 is a sectional view taken along line BB of FIG.

FIG. 4 is a partial vertical cross-sectional view showing one embodiment of the vehicle self-cooling reactor unit of the second invention.

FIG. 5 is a vertical cross-sectional view showing an example of a conventional vehicle self-cooling reactor unit.

6 is a sectional view taken along line CC of FIG.

[Explanation of symbols]

1 ... Unit coil, 2A, 2B ... Spacer, 3 ... Box body, 4
… Both screw bolts, 5A, 5B… support frame, 6… car body beam.

Claims (2)

[Claims] 1. A horizontal self-cooling reactor unit for a vehicle, which is cooled by cooling air generated by traveling of a vehicle body and is formed into a tubular shape by stacking a plurality of unit coils through strip-shaped spacers, A first spacer is provided vertically parallel to the upper part of each unit coil, and a second spacer is provided in the lower part of each unit coil with a lower end of the first spacer in a V shape so as to form a gap. A self-cooling reactor unit for vehicles, which is composed of a spacer. 2. The self-cooling reactor unit for vehicles according to claim 1, wherein an iron core is inserted into the hollow portion of the unit coils that are stacked in a tubular shape.