TWI722757B - The heat dissipation structure of the motor - Google Patents

Abstract

A heat dissipation structure for a motor is applied to an electric locomotive. A motor device is located on the electric locomotive and is adjacent to the rear wheel of the electric locomotive. It includes a yoke located in the middle of the motor device, and one side of the yoke is installed There is a front cover, the other side of the yoke corresponding to the front cover is equipped with a rear cover, the motor device has a plurality of bearings, which are installed in the front cover and the rear cover, and a stator is installed in the yoke, A rotor is installed in the stator, and the rotor has a spindle, wherein the bearings in the front cover and the rear cover are combined with the spindle to support the rotor; the heat dissipation structure of the motor includes: a fan blade , Installed on one of the bearings of the back cover, and located on the other side of the back cover corresponding to the yoke; a wind hood, installed on the yoke, and the back cover and the fan blade are accommodated Inside the wind hood.

Description

The heat dissipation structure of the motor

The present invention relates to a heat dissipation structure of a motor, in particular to a heat dissipation structure of a motor that enables airflow to flow quickly and allows the motor device to quickly cool down.

During the operation of the motor, it is easy to accumulate heat energy in the housing of the motor. Since the high temperature generated by the operation of the motor cannot be eliminated in a timely manner, the heat energy of the motor will cause the magnetic force of the internal magnet to decline, and consequently the operation efficiency of the motor will gradually decrease. When the temperature rises to a certain level, the insulation layer of the stator or rotor coil will be destroyed, which will cause the short circuit of the coil and destroy the motor.

As shown in FIG. 1 to FIG. 2, it is a three-dimensional view and a plan cross-sectional view of the conventional technology. A motor device 30 includes a rotor 31 inside. The rotor 31 has a spindle 32. In order to avoid damage to the motor device 30 due to the above-mentioned reasons, the current common technology is to provide a fan blade 33 at one end of the spindle 32. When the spindle 32 rotates, the fan The blade 33 is also driven to suppress the rapid increase in temperature of the motor device 30 during operation. However, this may increase the wind resistance when the motor device 30 is in operation, and greatly reduce the efficiency of the motor device 30.

Based on the above reasons, there is still room for improvement in the conventional technology. In view of this, the inventors have actively researched, combined with years of experience in related product research and development, and after continuous testing and improvement, finally developed the present invention.

The main purpose of the present invention is to provide a heat dissipation structure for a motor, so that the air flow can flow quickly, and the motor device can quickly cool down.

In order to achieve the above-mentioned object, the present invention provides a heat dissipation structure for a motor, which is applied to an electric locomotive. A motor device is located on the electric locomotive and is adjacent to the rear wheel of the electric locomotive. A yoke, one side of the yoke is equipped with a front cover, the other side of the yoke corresponding to the front cover is equipped with a rear cover, the motor device has a plurality of bearings, which are installed in the front cover and the rear cover, A stator is installed in the yoke, a rotor is installed in the stator, and the rotor has a spindle, wherein the bearings in the front cover and the rear cover are combined with the spindle to support the rotor; the motor The heat dissipation structure includes: a fan blade installed on one of the bearings of the back cover and located on the other side of the back cover corresponding to the yoke; a wind cover installed on the yoke, and The back cover and the fan blades are accommodated in the air-collecting hood, the air-collecting hood has a first opening, and there is a gap between the air-collecting hood and the yoke.

In order to make the purpose, features and advantages of the present invention easier to understand by those with ordinary knowledge in the field, a preferred embodiment is given below in conjunction with the accompanying drawings and described in detail as follows.

(this invention)

10‧‧‧Motor device

11‧‧‧Yoke

12‧‧‧Front cover

13‧‧‧Back cover

14‧‧‧Bearing

15‧‧‧Stator

16‧‧‧Rotor

17‧‧‧Mandrel

18‧‧‧Fan Blade

19‧‧‧Wind cover

191‧‧‧First opening

192‧‧‧Second opening

20‧‧‧Electric Locomotive

(Literary technology)

30‧‧‧Motor device

31‧‧‧Rotor

32‧‧‧Mandrel

33‧‧‧Fan Blade

Figure 1 is a perspective view of the conventional technology.

Fig. 2 is a plan sectional view of the conventional technology.

Fig. 3 is a schematic diagram of the motor device applied to an electric locomotive.

4 is a perspective view of the motor device and the heat dissipation structure of the motor of the present invention.

5 is a plan sectional view of the motor device and the heat dissipation structure of the motor of the present invention.

Fig. 6 is an exploded perspective view of the motor device and the heat dissipation structure of the motor of the present invention.

7 is a perspective view of another embodiment of the motor device and the heat dissipation structure of the motor of the present invention.

Please refer to Figures 3 to 6, Figure 3 is a schematic diagram of the motor device applied to electric locomotives, Figure 4 is a perspective view of the motor device and the heat dissipation structure of the motor of the present invention, and Figure 5 is the motor device and the heat dissipation structure of the motor of the present invention Plane cross-sectional view, FIG. 6 is a three-dimensional exploded view of the motor device and the heat dissipation structure of the motor of the present invention. The present invention relates to a heat dissipation structure of a motor, which is applied to an electric locomotive. The motor device 10 is located on the electric locomotive 20 and is adjacent to the rear wheel of the electric locomotive 20, and includes a yoke located in the middle of the motor device 10 A front cover 12 is mounted on one side of the yoke 11, and a rear cover 13 is mounted on the other side of the yoke 11 corresponding to the front cover 12. The motor device 10 has a plurality of bearings 14 mounted on the front cover 12 and the rear cover 13, the yoke 11 is provided with a stator 15, the stator 15 is provided with a rotor 16, the rotor 16 has a spindle 17, wherein the front cover 12 and the rear cover 13 The bearing 14 is combined with the spindle 17 to support the rotor 16.

The heat dissipation structure of the motor includes: a fan blade 18 installed on one of the bearings 14 of the back cover 13 and located on the other side of the back cover 13 corresponding to the yoke 11; Is disposed on the yoke 11, and the rear cover 13 and the fan blades 18 are accommodated in the air collecting hood 19, the air collecting hood 19 has a first opening 191, the air collecting hood 19 and the yoke 11 There is a gap between.

The first opening 191 of the air collecting hood 19 faces the windward side of the riding direction of the electric locomotive 20. When the speed of the electric locomotive 20 reaches a certain level, the airflow enters the air collecting hood 19 from the first opening 191, and The fan blade 18 is driven to rotate to accelerate air circulation, and then the air flows out of the gap between the air collecting hood 19 and the yoke 11 and blows to the outside of the motor device 10, so that the motor device 10 is quickly cooled.

Please refer to FIG. 7, which is a diagram of the motor device and the heat dissipation structure of the motor of the present invention A perspective view of another embodiment. According to another embodiment of the present invention, the air collecting hood 19 further has a second opening 192.

The air flow enters into the air collection hood 19 from the first opening 191 of the air collection hood 19, and will drive the fan blade 18 to rotate, and then the air flow will flow out from the second opening 192, and the rotation of the fan blade 18 is Driven by the wind shear force of the air flow, under the effect of the pressure difference, the high temperature air flow outside the motor device 10 enters the air collecting hood 19 from the gap between the air collecting hood 19 and the yoke 11, and finally It flows out from the second opening 192 to quickly cool the motor device 10.

Compared with the prior art, the heat dissipation structure of the motor of the present invention does not require a rotor to drive the fan blades to rotate. When the motor device is running, it does not increase the wind resistance, and can maintain a certain rotation efficiency, so that the airflow can flow quickly, so that The motor device can quickly cool down.

Although the present invention has been disclosed in preferred embodiments as above, it is not intended to limit the present invention. Anyone familiar with this technology can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall be subject to the scope of the attached patent application.

10‧‧‧Motor device

11‧‧‧Yoke

12‧‧‧Front cover

13‧‧‧Back cover

14‧‧‧Bearing

15‧‧‧Stator

16‧‧‧Rotor

17‧‧‧Mandrel

18‧‧‧Fan Blade

19‧‧‧Wind cover

191‧‧‧First opening

Claims (1)

A heat dissipation structure for a motor is applied to an electric locomotive. A motor device is located on the electric locomotive and is adjacent to the rear wheel of the electric locomotive. It includes a yoke located in the middle of the motor device, and one side of the yoke is installed There is a front cover, the other side of the yoke corresponding to the front cover is equipped with a rear cover, the motor device has a plurality of bearings, which are installed in the front cover and the rear cover, and a stator is installed in the yoke, A rotor is installed in the stator, and the rotor has a spindle, wherein the bearings in the front cover and the rear cover are combined with the spindle to support the rotor; the heat dissipation structure of the motor includes: a fan blade , Installed on one of the bearings of the back cover, and located on the other side of the back cover corresponding to the yoke; and a wind cover, installed on the yoke, and the back cover and the fan blade are accommodated In the air collecting hood, the air collecting hood has a first opening, and there is a gap between the air collecting hood and the yoke; the first opening of the air collecting hood faces the windward side of the riding direction of the electric vehicle, when When the speed of the electric locomotive reaches a certain level, the airflow enters the air collecting hood from the first opening, and will drive the fan blades to rotate to accelerate the air circulation, and then the airflow will flow from between the air collecting hood and the yoke. The gap flows out and blows to the outside of the motor device to quickly cool the motor device; the air collecting hood also has a second opening; the airflow enters the air collecting hood from the first opening of the air collecting hood, and will drive The fan blade rotates, and then the airflow flows out from the second opening. The rotation of the fan blade is driven by the wind shear force of the airflow. Under the effect of the pressure difference, the high-temperature airflow outside the motor device comes from the set The gap between the wind hood and the yoke part enters into the wind hood, and finally flows out from the second opening, so that the motor device is quickly cooled.

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