JPH0567172U - Fully closed traction motor for vehicle - Google Patents

Abstract

(57) [Summary] [Purpose] The objective is to improve the cooling effect of a fully closed traction motor for a vehicle. [Composition] In a fully closed main electric motor arranged in a bogie of a railway vehicle, a heat receiving part at one end of a loop type thin tube heat pipe is placed in a drive side space part in the frame of the fully closed main electric motor, and a heat receiving part at the other end is reversed. It is arranged in the drive side space part, and the heat dissipation part in the middle of this loop type thin tube heat pipe is arranged outside the main motor frame.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cooling structure for a full-closed traction motor used for driving a railway vehicle.

[0002]

[Prior Art]

 Conventionally, a DC electric motor has been mainly used as a main electric motor for vehicles. Since these electric motors are built into a trolley in a limited space, it is generally necessary to make them open-ventilated or forced-ventilated. This DC motor has a commutator and a brush, and the carbon powder of the brush remains on the inside of the machine to reduce the insulation resistance. However, in the open-ventilated and forced-ventilated electric motors, since cooling air is taken in from the outside, there are obstacles such as sucking in external dust and polluting the inside of the electric motor. There were drawbacks such as having to do it.

On the other hand, due to the progress of power electronics technology in recent years, an induction motor has been used as a main motor for a vehicle instead of a direct current motor. Since this induction motor does not have a commutator and a brush, if it can be fully closed, it will prevent dust from entering from the outside of the motor, and the inside of the machine can always be kept clean. No internal cleaning is required, and the periodic disassembly period can be greatly extended. Therefore, there is a strong demand for the vehicle electric motor to have a fully closed configuration.

[0004]

[Problems to be solved by the device]

 As mentioned above, the purpose of making the main electric motor for vehicles fully closed is to prevent the intrusion of dust into the interior of the main electric motor for vehicles. There were the following problems in order to set. The size of a fully-closed self-cooling type motor with the same capacity as an open type motor is extremely larger than that of an open type motor, and if the installation space is limited, such as for vehicles, it is impossible to configure it. Even with a fully-enclosed external fan type, which has better cooling efficiency than the closed self-cooling type, the space for the external fan was required, and the configuration was difficult. The present invention was devised in view of the above-mentioned points, and an object of the present invention is to provide a fully-closed main electric motor for a vehicle, which is small in size and does not have an outer door dedicated to cooling and has a good cooling effect. To do.

[0005]

[Means for Solving the Problems]

 In other words, the means for achieving the object is to use a fully closed main electric motor arranged in a bogie of a railway vehicle, in which the heat receiving portion at one end of a loop type thin pipe heat pipe (hereinafter referred to as loop pipe) is the fully closed main electric motor. The heat receiving part at the other end is arranged in the anti-driving side space part in the driving side space part in the frame, and the heat radiating part in the middle of this loop pipe is arranged outside the main motor frame.

[0006]

[Action]

 With the above-mentioned configuration, the heat generated by the electrical loss of the main motor causes the heat receiving ends of the loop pipes arranged in the drive side and anti-drive side spaces inside the main motor to be on the high temperature side, and is arranged outside the main motor frame. The heat radiation part in the middle of the loop pipe is on the low temperature side. With this configuration, the heat generated inside the main motor is transferred from the high temperature side to the low temperature side of the loop pipe, and the generated heat is released from the heat radiator on the low temperature side to the outside of the main motor. Further, the heat radiating portion of the loop pipe is arranged at a position exposed in the running wind when the vehicle is running, so that the heat radiating effect can be improved.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing the structure of a fully-closed traction motor for a vehicle according to the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1 showing a mounting portion of a loop pipe, and FIG. It is a perspective view shown. 1 to 3, 1 is a loop pipe, 1a and 1b are heat receiving parts of the loop pipe 1, 1c is a heat radiating part of the loop pipe 1, 2 is a main motor frame, and 7 is an adapter.

In FIG. 1, a loop pipe 1 is arranged so as to penetrate through a main motor frame 2, one end of which has a heat receiving portion 1a inside the main motor driving side space, and the other end of which has a heat receiving portion 1b which is opposite to the main motor driving side. It is arranged in the space, and the heat radiating part 1c in the middle of the loop pipe 1 is arranged outside the main motor frame 2 at a position exposed to the running wind of the vehicle. FIG. 2 shows an embodiment in which the loop pipe 1 is attached to the main motor frame 2, and in FIG. 2, numeral 7 is an adapter for attaching the loop pipe 1 to the main motor frame 2. FIG. 3 shows the configuration of the loop pipe 1. The heat receiving portions of the endless pipe in which the heat receiving portions 1a and 1b and the heat radiating portion 1c are alternately connected are bent and bundled, and the heat receiving portion and the heat radiating portion are multiplexed. The loop pipe 1 may be directly attached to the main motor frame 2 without using the adapter 7.

[0009]

[Effect of the device]

 As described above, according to the present invention, by mounting the loop pipe on the fully closed main motor frame, the heat generated in the internal space of the main motor is conducted to the outside of the main motor by the loop pipe, and the heat dissipation part of the loop pipe is transferred to the vehicle. It is possible to provide a fully-closed traction electric motor for a vehicle, which has an excellent cooling effect, without providing an external fan to the traction motor by exposing it in the running wind or installing another cooling device outside the traction motor.

[Brief description of drawings]

[0010]

FIG. 1 is a cross-sectional view showing a configuration of a fully-closed traction motor for a vehicle according to an embodiment of the present invention.

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

FIG. 3 is a perspective view showing a configuration of a loop pipe according to an embodiment of the present invention.

[0011]

[Explanation of symbols]

 1 loop pipe 1a heat receiving part 1b heat receiving part 1c heat radiating part 2 main motor frame 3 main motor shaft 4 main motor stator 5 main motor rotor 7 adapter

Claims (1)

[Scope of utility model registration request] 1. A fully-closed main electric motor arranged in a bogie of a railroad vehicle, wherein a heat receiving portion at one end of a loop-type thin tube heat pipe is provided in a drive-side space in the fully closed main electric motor frame.
A full-closed main electric motor for a vehicle, characterized in that the heat receiving portion at the other end is arranged in the space opposite to the driving side, and the heat radiating portion in the middle of the loop type thin pipe heat pipe is arranged outside the main electric motor frame. .