JPS6137145B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooling device for vehicle control equipment, and more particularly to a cooling device that effectively utilizes the air flow of a vehicle.

Among electrical control devices in vehicles, control devices using semiconductors such as thyristors have increased in capacity in recent years, resulting in increased heat generation, and the cooling method has become an important issue.

First, a conventional cooling system will be explained with reference to FIG.

In this figure, 1 is a train car body, 2 is a control device attached to the lower side of the car body 1 via a mounting piece 3, and 4 is a rail. The control device 2 includes a cylindrical heating element container 5 that houses a heating element such as a thyristor, a radiator 6 that dissipates heat generated by the heating element, and an accessory device 7 that is electrically connected to and controls the heating element. It consists of an equipment room 8 and the like, and each of these parts 5 to 8 is supported by a support frame 9. Also,
The mutual positional relationship of these parts 5 to 8 is such that the equipment chamber 8 housing the accessory equipment 7 is located on the side of the vehicle center C-C, the heating element container 5 and the radiator 6 are located on the side of the vehicle body, and the heating element container 5 is located on the side of the vehicle body. The heat radiators 6 are arranged in a row in the lower part and the upper part, and the longitudinal direction of the heating element container 5 is perpendicular to the traveling direction of the vehicle, and the fins of the heat radiator 6 are perpendicular to the traveling direction of the vehicle. Up and down (so that natural convection ventilation takes place)
They are arranged parallel to each other.

According to such a cooling system, not only does the traveling wind directly hit the radiator 6, but also a part of the traveling wind that hits the heating element container 5 is guided to the radiator 6, so that it can be cooled well. I can do it.

However, in order to increase the capacity of control devices as described above, and to save on replacement costs and labor in the event of failure, recently, the heating element container 5 and the heat radiator 6 are composed of multiple sets of control units with the same specifications. In such vehicles, each control unit must be arranged in series in the vehicle running direction due to equipment space constraints, so the cooling system shown in Figure 1 does not A problem arises in that the control unit disposed on the side prevents the flow of traveling air to the downstream side, making it impossible to sufficiently cool the radiator of the control unit disposed on the downstream side.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cooling device for vehicle control equipment that can solve the above-mentioned problems and effectively cool a radiator of a control unit located downstream.

In order to achieve this object, the present invention arranges the heating element container so that its longitudinal direction is parallel to the traveling direction of the vehicle, and in a position that is closer to the center of the vehicle body than directly under the radiator. It is characterized in that the space at the bottom is enlarged to allow sufficient airflow to flow to the radiator of the control unit located downstream.

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3. In these figures, the same reference numerals as in FIG. 1 indicate the same or equivalent parts.

Two sets of control units each consisting of a heating element container and a radiator are provided, and these are arranged in series in the direction of travel of the vehicle as indicated by arrow X. The heating element containers 5a, 5b of each control unit are arranged so that their longitudinal direction is parallel to the direction of movement, and the heat radiators 6a, 6b
It is placed closer to the center of the vehicle C-C than directly below,
Thereby, a lower space 10 is formed below each radiator 6a, 6b. In addition, between each control unit, the running air flowing through the lower space 10 formed at the bottom of the upstream radiator 6a (or 6b when traveling in the opposite direction to this figure) is transferred to the downstream radiator 6b. A guiding plate 11 is provided.

In this way, according to this embodiment, the space under the radiator is enlarged by arranging the heating element container so that its longitudinal direction is parallel to the direction of travel of the vehicle and offset from directly below the radiator. Even when multiple sets of control units are arranged in series in the direction of travel of the vehicle, the flow of traveling air to the downstream side is less likely to be obstructed by the heating element container on the upstream side, and the flow of air to the downstream side is It is possible to circulate the running wind. Moreover, the traveling wind flowing through the space below the upstream radiator 6a is guided upward by the guide plate 11 as shown by arrow Y in FIG. 4, becomes a jet flow, and flows into the downstream radiator 6b. Therefore, both the upstream and downstream radiators 6a and 6b can be cooled well. In addition, since the heating element containers 5a and 5b are shifted toward the vehicle center C-C side, the heat radiators 6a and 5b
It can be placed closer to the equipment room 8 than in the case where it is placed directly below the heating element container 5, and the electrical connection between the lead-out terminal from the heating element container 5 and the attached equipment 7 becomes easier.

As explained above, according to the present invention, when a plurality of sets of control units are arranged in series with the traveling direction of the vehicle, the heating element container is arranged such that its longitudinal direction is parallel to the traveling direction of the vehicle. In addition, it is placed closer to the center of the vehicle body than directly below the heat radiator to increase the space under the radiator, and the heating element container of the control unit located on the upstream side reduces the flow of wind toward the downstream side. Since the flow of air is less obstructed, the running air can be sufficiently distributed to the radiator of the control unit located downstream. The heat sink of the control unit can be effectively cooled.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of a conventional cooling device for a vehicle control device, FIG. 2 is a side view of a cooling device for a vehicle control device according to an embodiment of the present invention, and FIG.
4 is a sectional view taken along the line Z-Z in the figure, and FIG. 4 is a schematic side view showing the flow state of running air in a cooling device according to an embodiment of the present invention. 1...Train car body, 5a, 5b...Heating element container,
6a, 6b...radiator, 11...guide plate.

Claims (1)

[Scope of Claims] 1. A plurality of control units assembled by vertically arranging a cylindrical heating element container containing a heating element and a radiator for dissipating the heat of the heating element are installed at the lower side of the vehicle body. In a cooling device for a vehicle control device, which is attached to a vehicle and arranged in series in the traveling direction of a vehicle, and cools the heat radiator by applying running air to the heat radiator, the heating element container is arranged so that its longitudinal direction is parallel to the traveling direction of the vehicle. 1. A cooling device for vehicle control equipment, characterized in that it is arranged at a position closer to the center of a vehicle body than directly below a radiator. 2. Vehicle control according to claim 1, characterized in that a guide is provided between the control units to guide the traveling wind flowing below the radiator of the upstream control unit to the radiator of the downstream control unit. Equipment cooling system.