JP3585120B2 - Main motor for vehicle - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, a fan provided in a main motor installed in a bogie of a vehicle takes in outside air, separates dust in the outside air, discharges the outside air with a part of the outside air, and uses the remaining outside air as cooling air. The present invention relates to a main motor that ventilates a rotor, a stator, and the like, and more particularly to a main motor for a vehicle that features improved cooling of an exhaust-side bearing portion and a dust discharging method.
[0002]
[Prior art]
The traction motor for a vehicle is installed in a bogie part of a vehicle where environmental conditions are poor, and cools a rotor and a stator by taking in outside air during traveling of a train regardless of environmental conditions.
This state is shown in FIG.
FIG. 2 is an explanatory view showing an example of the conventional art, wherein 1 is a main motor shaft, 2 is a fan mounted on the main motor shaft 1, 3 is an auxiliary fan, 4 is a frame, 5 is an outside air intake, and 6 is an exhaust. The mouth, 7 is a rotor, 8 is a stator, 9 and 10 are bearings, 11 is a dust separation chamber, and 12 is a dust outlet.
In FIG. 2, the main motor is always running during operation of the train. Because of this, the temperature of the equipment inside the main motor rises, so that the fan 2 always sucks the outside air from the outside air intake port 5 through the dust separation chamber 11 to cool the rotor 7 and the stator 8.
[0003]
[Problems to be solved by the invention]
However, such means have the following problems.
The exhaust-side bearing is exposed to waste heat due to a rise in the temperature inside the main motor, and is likely to be heated to a high temperature, which may lead to a failure of the bearing.
In order to solve this, an auxiliary fan is provided on the exhaust side and an appropriate partition is provided. However, although the exhaust-side bearing portion can be cooled, the space for mounting the main motor in the bogie of the vehicle is limited, so that a large-capacity fan with high performance cannot be provided in many cases.
Also, part of the cooling air is discharged to the outside of the machine without contributing to the cooling together with the dust, and furthermore, since the cooling air containing the dust is ventilated inside the rotating machine, the insulation of the coil may be deteriorated. There are various problems such as inducing a failure of the main motor.
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned points, and aims to solve these problems and to appropriately reduce the temperature of the equipment inside the main motor without reducing the cooling air flow. It is an object of the present invention to provide a main motor for a vehicle which can be operated under favorable conditions without maintaining and promoting deterioration of the bearing and without shortening the period of overhaul.
[0004]
[Means for Solving the Problems]
In other words, the means to achieve that purpose are:
External air is taken in by a fan installed in the main motor installed in the truck of the vehicle, dust in the external air is separated, exhausted to the outside together with part of the external air, and the remaining external air is used as cooling air for the rotor and fixed. In the main motor that ventilates the child,
A bypass duct that discharges the outside air together with a part of the outside air and vents the remaining outside air as cooling air to the rotor and the stator from a fan discharge side on the outside air intake side to a main motor on the other auxiliary fan side. The heavy duty dust that is difficult to transfer is provided between the frame portions of the main motor, and the bypass duct is provided at the lower part of the main motor where the heavy load of the bypass duct is easy to discharge. Dust is provided on the auxiliary motor side of the main motor frame with an exhaust port.
Part of the outside air taken in from the outside air intake is discharged out of the machine together with dust through the heavy-dust exhaust port, and the other outside air flows from the bearing inlet provided in the frame of the main motor to the center of the auxiliary fan. A ventilation bypass device that is injected into the vehicle and cools the auxiliary fan, and then is discharged from the outer periphery of the auxiliary fan to the outside through a discharge port provided in a frame portion of the main motor together with dust. It is the main motor.
[0005]
In other words, the main motor is capable of guiding a part of the cooling air, which has been discharged to the outside together with the dust, to the vicinity of the exhaust-side bearing by the ventilation bypass device provided in the main motor frame mounted on the bogie of the vehicle. The ventilation bypass device is composed of a bypass duct for guiding cooling air from the inlet side to the exhaust side, and an auxiliary fan for assisting the flow of the cooling air. The bypass duct is heated to a high temperature by the operation of the main motor. In order to prevent the temperature of the cooling air from rising due to the influence of the changed frame, an appropriate space is provided between the frame and the bypass duct. With the auxiliary fan, the wind speed of the cooling air can be increased, and the ability to discharge the dust carried by the cooling air can be increased.
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is an explanatory view showing an embodiment of the present invention, wherein 12 is a dust outlet, 13 is a bearing inlet, 14 is an outlet, 15 is a bypass duct, and 16 is a bypass inlet.
2 have the same configuration and function.
According to the present invention, a bypass duct 15 that discharges the outside air together with a part of the outside air and ventilates the remaining outside air as cooling air to a rotor, a stator, and the like is provided from the discharge side of the fan 2 on the side of the outside air intake 5 to the other side. The auxiliary fan 3 is provided between the frame 4 portion of the main motor and the heavy dust, which is difficult to transfer, is disposed at the lower portion of the bypass motor 15 where the heavy load of the bypass duct 15 is easily discharged. A dust discharge port 12 is provided, and light dust easily transported is provided with a discharge port 14 in the frame 4 portion of the main motor on the auxiliary fan 3 side.
[0007]
With such a configuration, a part of the outside air taken in from the outside air intake port 5 is discharged to the outside of the machine together with the dust from the heavy dust discharge port 12, and the other outside air is provided in the bearing portion provided on the frame 4 of the main motor. After being injected from the air inlet 13 into the center of the auxiliary fan 3 and cooling the auxiliary fan 3, it is discharged from the outer periphery of the auxiliary fan 3 to the outside of the machine through the outlet 14 provided in the frame 4 of the main motor. 1 is a vehicle main motor provided with a ventilation bypass device to be used.
[0008]
That is, in FIG. 1, outside air is taken in by a fan 2 provided in a main motor mounted on a bogie of a vehicle, and a difference between a cooling wind and a centrifugal force of the dust due to the rotation of the fan causes the cooling wind and the dust in the dust separation chamber 15 to be separated from each other. Dust is separated from the cooling air, and the cooling air is exhausted from the exhaust port 6 after passing through the rotor 7 and the stator 8. On the other hand, the dust is once discharged from the main motor through the bypass air inlet 12 together with a part of the cooling air, passes through the bypass duct 15, and enters the interior again through the bearing air inlet 13, and with the help of the auxiliary fan 3, It is discharged from the discharge port 14 to the outside of the machine.
[0009]
In the main motor configured as above,
The outside air is taken in by the fan 2 into the main motor installed on the truck of the vehicle. At this time, dust and water droplets in the outside air are separated by the fan 2 and the dust separation chamber 11, the main outside air is taken into the machine as cooling air shown in the cooling air path a, and the outside air containing the separated dust and water drops is passed through the bypass path b. , From the bypass inlet 16 through the bypass duct 15 to the vicinity of the exhaust side bearing.
[0010]
At this time, a part c of the outside air b taken in from the outside air intake port 5 is discharged out of the machine together with the dust from the heavy dust discharge port 12, and the other outside air d is a bearing part provided in the frame 4 of the main motor. The air is injected from the air inlet 13 to the center of the auxiliary fan 3 and thereafter, as described above, is automatically discharged to the outside by the auxiliary fan 3 together with the cooling air. At the same time, the exhaust-side bearing can be cooled.
As a result, the separated dust and water droplets are automatically discharged to the outside of the device from the discharge port 14, so that periodic cleaning of the air filter and the like is not required, and the rise in the temperature of the exhaust side bearing is suppressed. The main motor can always be operated under favorable conditions.
[0011]
【The invention's effect】
As described above, according to the present invention, it is possible to efficiently separate a large amount of dust and water droplets entering with the cooling air from the outside air intake, and always automatically discharge the dust and water without deterioration of insulation. This makes it possible to always operate the main motor under favorable conditions without the necessity of regular cleaning of the air filter and the like, and it is extremely useful in practice.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing an embodiment of the present invention.
FIG. 2 is an explanatory diagram showing an example of the related art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main motor shaft 2 Fan 3 Auxiliary fan 4 Frame 5 Outside air intake 6 Exhaust port 7 Rotor 8 Stator 9, 10 Bearing 11 Dust separation chamber 12 Dust outlet 13 Bearing inlet 14 Exit 15 Bypass duct 16 Bypass Inlet

Claims (1)

The fan inside the main motor installed in the truck of the vehicle takes in the outside air, separates the dust in the outside air, discharges it with the part of the outside air to the outside, and uses the remaining outside air as cooling air for the rotor and fixed. In the main motor that ventilates the child,
A bypass duct that discharges dust separated together with part of the outside air to the outside of the machine and vents the remaining outside air as cooling air to a rotor, a stator, and the like, from the discharge side of the fan on the outside air intake side to the other side. A dust discharge port provided between the frame portions of the main motor on the fan side and for discharging heavy materials which are difficult to transfer is provided at a lower portion of the main motor where the heavy materials of the bypass duct are easily discharged. provided parts of the duct, there is a discharge port for discharging the transfer easily lighter dust is provided in the frame part of the main motor of the auxiliary fan side,
Part of the outside air taken in from the outside air intake is discharged out of the machine together with dust from the heavy-dust exhaust port, and the other outside air flows from the bearing inlet provided in the frame section of the main motor to the center of the auxiliary fan. And a ventilation bypass device for cooling the auxiliary fan, discharging the auxiliary fan from the outer periphery of the auxiliary fan, and discharging the dust and dust to the outside through an outlet provided in a frame portion of the main motor. Main motor.

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