External heat dissipation device for AC frequency converter motor
By designing an external heat dissipation device, using hollow air storage ducts and optimized air outlet design, the cooling air flow is efficiently guided to the front bearing part of the AC inverter motor, solving the problem of excessive motor temperature and significantly improving the stability and production efficiency of the equipment.
Patent Information
- Application Number
- CN202421207642.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-05-29
AI Technical Summary
During the rolling of larger round steel with AC inverter motors, the increase in motor load leads to a rapid rise in temperature. Especially in high temperature environments, the temperature of the front bearings in the motor is too high, which may cause equipment failure and affect production efficiency.
An external heat dissipation device is designed, fixedly installed on the carbon brush bracket on the front end cover of the motor, including a hollow air storage duct, a quick joint, a positioning block, an internal threaded member and an air outlet, so as to efficiently guide the cooling air to the bearing part to achieve rapid heat dissipation.
It significantly reduces the working temperature of the front bearing and end cap of the motor, improves the stability and production efficiency of the equipment, and enhances the stable operation ability of the motor in high-temperature and high-load environments.
Smart Images
Figure CN222953858U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of heat dissipation of AC frequency converter motors, and in particular relates to an external heat dissipation device for AC frequency converter motors. Background Art
[0002] With the continuous development of industrial technology, the production process of bar mills is also continuously improving. At present, bar mills are rolling round steel with specifications of 50-95 round, which puts extremely high demands on the overall rolling process. In the traditional process design, bar mills mainly produce round steel with a round size of 60. However, after technical transformation, the current production line can already roll round steel with a round size of 95.
[0003] This technological advancement has increased production capacity and product specification range, but it has also brought a series of new challenges. The most important problem is the significant increase in motor load. Since rolling larger round steel requires greater force, the load on the motor also increases, which causes the motor temperature to rise rapidly.
[0004] Especially in summer, when the ambient temperature is high, the motor's own fan often cannot effectively cool the front bearing of the motor. This causes the front bearing of the motor to be too hot, which may cause equipment failure or even damage the motor. In order to avoid this situation, the machine is often forced to shut down for cooling, which undoubtedly has a serious impact on production efficiency.
[0005] There is no effective solution to this problem. Therefore, there is an urgent need for a heat dissipation device that can be installed on the front bearing of the motor to improve the heat dissipation efficiency of the motor, reduce the operating temperature of the front bearing and the motor end cover, and thus improve the stability and production efficiency of the equipment. Utility Model Content
[0006] In view of the problems existing in the prior art, the utility model provides an external heat dissipation device for an AC inverter motor, which improves the heat dissipation efficiency of the motor and reduces the working temperature of the front bearing and the motor end cover.
[0007] The utility model is implemented as follows: an external heat dissipation device for an AC inverter motor is characterized in that: the heat dissipation device is fixedly mounted on a carbon brush bracket on the front motor end cover side of the AC inverter motor, and comprises an internal hollow air storage pipe with both ends closed, a quick connector connected to a high-pressure air source is fixedly mounted on the upper surface of the air storage pipe; a positioning block is fixedly provided on the lower surface of the air storage pipe, and the positioning block is inserted between the connections of the carbon brush bracket to achieve the positioning of the air storage pipe; internal threaded components are symmetrically provided on both sides of the positioning block, the threaded holes of the internal threaded components are perpendicular to the positioning blocks, and a tightening screw is threaded in the internal threaded holes, and the tightening screw passes through the internal threaded component and abuts against the carbon brush bracket; a plurality of first air outlets are provided on the side wall of the air storage pipe on the front bearing end cover side.
[0008] Preferably, the internal threaded member is a nut, and the nut is welded to the lower end surface of the air storage pipe.
[0009] Preferably, both ends of the air storage pipe are bent toward the front bearing end cover to form a front bearing end cover purge portion; and a second air outlet is provided on the lower surface of the front bearing end cover purge portion.
[0010] Preferably, two first air outlets are provided, and the two first air outlets are arranged in radial symmetry.
[0011] Preferably, the air storage pipe is a square tube structure, and both ends of the square tube structure are closed structures. Preferably, the 10×10 mm square tube of the air storage pipe has a wall thickness of 2 mm.
[0012] The advantages and technical effects of the utility model are as follows: The utility model provides an external heat dissipation device for the heat dissipation problem of the AC inverter motor bearing. With its unique design, the device can efficiently guide the cooling airflow to the bearing part to achieve fast and effective heat dissipation. Through the stable installation structure and optimized air outlet design, it not only ensures the close integration of the heat dissipation device and the motor, but also enables the cooling airflow to act on the bearing evenly and continuously, thereby significantly reducing the bearing temperature. In addition, the introduction of the quick connector enables the heat dissipation device to be quickly connected to the high-pressure air source, further improving the convenience of use. On the whole, the utility model not only significantly improves the stability and service life of the motor, but also provides solid technical support for the stable operation of the motor in harsh environments such as high temperature and high load, fully demonstrating its practicality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;
[0014] Figure 2 It is a usage state diagram of an embodiment of the utility model.
[0015] In the figure, 1, air storage pipe; 1-1, first air outlet; 1-2, front bearing end cover purge part; 1-3, second air outlet; 2, quick connector; 3, positioning block; 4, internal threaded member; 5, tightening screw; 6, front motor end cover; 7, carbon brush bracket. DETAILED DESCRIPTION
[0016] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.
[0017] See also Figure 1 and Figure 2 An external heat dissipation device for an AC inverter motor is fixedly mounted on a carbon brush holder 7 on the side of a front motor end cover 6 of the AC inverter motor, and includes an internal hollow air storage pipe 1 with both ends closed. The heat dissipation device is directly mounted on the carbon brush holder of the front bearing end cover of the motor, so that the bearing can be cooled more directly, thereby improving the heat dissipation efficiency. The internal hollow design allows the cooling airflow to pass smoothly, further enhancing the heat dissipation effect. A quick connector 2 connected to a high-pressure air source is fixedly mounted on the upper surface of the air storage pipe; the design of the quick connector allows the heat dissipation device to be quickly and conveniently connected to the high-pressure air source, thereby ensuring a continuous supply of cooling airflow. This design not only improves work efficiency, but also enhances the reliability of the equipment. A positioning block 3 is fixedly provided on the lower surface of the air storage pipe, and the positioning block is inserted between the connections of the carbon brush bracket to realize the positioning of the air storage pipe; internal threaded components 4 are symmetrically provided on both sides of the positioning block, and the threaded holes of the internal threaded components are perpendicular to the positioning blocks, and the internal threaded holes are threaded with tightening screws 5, and the tightening screws pass through the internal threaded components and abut against the carbon brush bracket; the design of the positioning block and the internal threaded components enables the heat dissipation device to be accurately and stably installed on the motor, and the tightening screws further ensure the stability of the device. This design not only improves the installation accuracy, but also enhances the safety of the equipment. Several first air outlets 1-1 are provided on the side wall of the air storage pipe on the front bearing end cover side, and two radially symmetrical air outlets can ensure that the cooling airflow is evenly distributed around the bearing, thereby achieving a more uniform heat dissipation effect.
[0018] Preferably, the internal thread member is a nut, which is welded to the lower end surface of the air storage pipe. Using the nut as the internal thread member not only simplifies the structure but also reduces the manufacturing cost. The nut is directly welded to the air storage pipe, which enhances the integrity of the structure and facilitates installation and disassembly.
[0019] Preferably, both ends of the air storage pipe are bent toward the front bearing end cover to form a front bearing end cover purge portion; 1-2; a second air outlet 1-3 is provided on the lower surface of the front bearing end cover purge portion, and the design of the purge portion can more effectively remove dust and debris around the bearing, keep it clean, and thus improve the heat dissipation efficiency. The second air outlet further enhances the heat dissipation effect and ensures that the bearing temperature is effectively controlled.
[0020] Preferably, two first air outlets are provided, and the two first air outlets are arranged in radial symmetry.
[0021] Preferably, the air storage pipe is a square tube structure, both ends of which are closed structures. The square tube structure has better stability and load-bearing capacity, which can ensure that the heat dissipation device remains stable during long-term use. The design of closing both ends prevents airflow leakage and ensures the effective use of cooling airflow.
[0022] Preferably, the air storage pipe is a 10×10mm square pipe with a wall thickness of 2mm. The air storage pipe of this size and wall thickness ensures sufficient pressure bearing capacity without being too heavy, thus achieving a balance between lightness and strength. This design can not only reduce material costs, but also improve the operating efficiency and service life of the equipment.
[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An external heat sink for an AC inverter motor, characterized in that: The heat dissipation device is fixedly mounted on the carbon brush bracket on the front motor end cover side of the AC inverter motor, and includes an internal hollow air storage pipe with both ends closed, and a quick connector connected to a high-pressure air source is fixedly mounted on the upper surface of the air storage pipe; a positioning block is fixedly provided on the lower surface of the air storage pipe, and the positioning block is inserted between the connections of the carbon brush bracket to realize the positioning of the air storage pipe; internal threaded components are symmetrically provided on both sides of the positioning block, and the threaded holes of the internal threaded components are perpendicular to the positioning blocks, and tightening screws are screwed into the threaded holes, and the tightening screws pass through the internal threaded components and abut against the carbon brush bracket; a plurality of first air outlets are provided on the side wall of the air storage pipe on the front bearing end cover side.
2. According to claim 1, the external heat dissipation device for AC inverter motor is characterized in that: The internal thread component is a nut, and the nut is welded to the lower end surface of the air storage pipe.
3. The external heat sink for AC inverter motor according to claim 1, characterized in that: Both ends of the air storage pipe are bent toward the front bearing end cover to form a front bearing end cover purge portion; a second air outlet is provided on the lower surface of the front bearing end cover purge portion.
4. The external heat sink for AC inverter motor according to claim 1, characterized in that: There are two first air outlets, and the two first air outlets are arranged in radial symmetry.
5. The external heat sink for AC inverter motor according to claim 1, characterized in that: The air storage pipe is a square tube structure, and both ends of the square tube structure are closed structures.
6. The external heat sink for AC inverter motor according to claim 1, characterized in that: The air storage duct is a 10×10mm square tube with a wall thickness of 2mm.