JPH0495561A - Cooling device for electric locomotive - Google Patents

Abstract

PURPOSE:To lower an air temperature in and around an air compressor, keeping a machine room in a comfortable temperature, and reduce a trouble rate of the air compressor by installing an exclusive air duct for emitting cooling exhaust airout of the air compressor housed in the machine room to the outside of a locomotive directly, in a cooling device for the electric locomotive. CONSTITUTION:In this AC electric locomotive, the inner part is divided into a cab 1 and a machine room 2, and a filter device 3, a blower 4, a rectifier 5, a transformer 6, an interior ventilating opening 7 and an air compressor 8 are all set up in a part of the machine room, while an air duct 9 is set up under the floor. In this case, there is provided another air duct 12 which directly connects an exhaust air port 10 of the air compressor 8 to another exhaust port 11 leading to the outside air of an engine roof part. Then, cooling air out of the interior ventilating opening 7 is drawn by a blower inherent in the air compressor 8 and, after an inner part of the air compressor 8 and piping are cooled, this cooling air is made so as to be discharged direct to the outside of the locomotive. With this constitution, such a fear that hot exhaust air out of the air compressor stays in and around the compressor is brought to nothing, thus comfortability in the machine room increases.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to the use of an air compressor in an electric locomotive in which the equipment cooling system is constituted by independent air ducts in the air intake and exhaust channels of the locomotive. It is related to cooling.

[Conventional technology]

FIG. 3 is a plan view of an AC locomotive viewed from above, as an example of a conventional locomotive. That is, the inside of the locomotive is divided into the driver's cab 1 and the machine room 2, and the machine room 2 part has the following:
Filter device 3. Blower 4° Rectifier 5. Transformer6. An indoor ventilation lower and an air compressor 8 are arranged, and a wind passage 9 is arranged under the floor.

FIG. 4 is a sectional view taken along the line ■-■ in FIG. 3, and there is a cooling exhaust outlet 10 on the side of the air compressor 8. Further, an exhaust port 11 is provided on the roof of the locomotive.

Next, the cooling effect will be explained. Outside air taken in from the side of the locomotive is purified by the filter device 3 and sent into the air passage 9 by the blower 4.

After that, the cooling air is passed through the rectifier 6. The transformer 7 is cooled and discharged to the outside through the upper roof, and a portion of the coolant is discharged indoors through the ventilation lower. The air compressor 8 is cooled by this indoor ventilation air. Note that this air compressor 8 has a self-cooling fan, and cooling exhaust air is discharged into the machine room 2 through an outlet 10 and finally through a machine room exhaust port 11.

[Problem to be solved by the invention]

Conventional electric locomotive cooling systems are configured as described above, so the air compressor is cooled by the path in which the cooling air coming out of the indoor ventilation vent passes through the air compressor and is discharged from the roof exhaust vent. On the other hand, the exhaust heat such as compression heat is greater than that of an air compressor, and as a result, the air temperature around the air compressor becomes high. As a result, the failure rate of the air compressor increases, and there is a problem that the temperature of the machine and the room become high.

This invention was made to solve the above-mentioned problems, and it provides a cooling device that lowers the air temperature around the air compressor, keeps the machine room at a comfortable temperature, and reduces the failure rate of the air compressor. The purpose is to obtain.

[Means to solve the problem]

The air compressor cooling device according to the present invention is provided with an air passage for directly discharging cooling exhaust air from the air compressor to the outside of the locomotive.

[Effect]

In this invention, most of the waste heat from the compressor is directly discharged outside the engine through the air duct, so the temperature around the air compressor can be kept low.

〔Example〕

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

In FIG. 1, reference numeral 12 denotes a wind passage that directly connects the exhaust port 10 of the air compressor 8 and the exhaust port 11 to the outside air on the engine roof.

Note that the other configurations are the same as those of the above-mentioned conventional example, so explanations will be omitted.

Next, the cooling effect will be explained. The cooling air coming out of the indoor ventilation lower is sucked in by the air compressor 1 [8 specific blower, and after cooling the inside of the air compressor and piping, it is sent to the dedicated air duct 12.
It is directly discharged from the locomotive. Therefore, the hot exhaust air from the air compressor does not stay around the compressor, and the surrounding temperature is lowered, which increases the comfort of the machine room and reduces the failure rate of the air compressor.

Note that even if the air passage 12 is provided toward the side of the vehicle body from the air compressor exhaust port IO, as shown in FIG. 2, the same effect as in the above embodiment can be obtained.

〔Effect of the invention〕

As described above, according to the present invention, the cooling exhaust air from the air compressor is directly discharged to the outside of the locomotive through the wind duct, so the temperature inside the machine room does not become excessive and comfort is increased.
It also has the effect of reducing the lII rate of the air compressor.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a cooling device for an electric locomotive according to an embodiment of the present invention, FIG. 2 is a sectional view showing another embodiment of the invention, FIG. 3 is a conventional equipment layout diagram, and FIG. The figure is a sectional view of a conventional cooling device. In the figure, 1 is the operator's cab, 2 is the machine room, 3 is the filter device, 4
is a blower, 5 is a rectifier, 6 is a transformer, 7 is an indoor ventilation opening,
8 is an air compressor, 9 is an underfloor airway, 10 is an air compressor exhaust port, 11 is a roof exhaust port, and 12 is an air compressor exhaust airway. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] A cooling device for an electric locomotive, characterized in that the cooling device for an electric locomotive is equipped with a dedicated air passage for directly discharging cooling exhaust air from an air compressor housed in a machine room to the outside of the locomotive.