Motor circuit board structure with cooling function

By designing a vortex fan and axial propeller, combined with an air intake filter and a thermal grease layer, the problem of low heat dissipation efficiency and dust accumulation in the motor circuit board cooling system under high temperature environments is solved, achieving efficient heat dissipation and stable operation of the equipment.

CN223978545UActive Publication Date: 2026-03-06DONGGUAN QUNHAN ELECTRONICS CO LTD
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Patent Information

Application Number
CN202520202023.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-10
Publication Date
2026-03-06
Estimated Expiration
2035-02-10

AI Technical Summary

Technical Problem

Existing motor and circuit board cooling systems have low heat dissipation efficiency in high-temperature environments, easily accumulating dust and affecting equipment stability and service life.

Method used

It adopts a design of swirl fan, axial propeller and cooling guide block, combined with air intake filter and thermal grease layer to form a high-efficiency cooling circuit, filter dust and improve heat transfer efficiency.

Benefits of technology

It achieves efficient heat dissipation for motors and circuit boards in high-temperature environments, extending equipment lifespan and improving stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a motor circuit board structure with a cooling function. The motor circuit board structure comprises a motor, a control box, an air duct box and a rotational flow fan. In the embodiment, the control box and the rotational flow fan are fixed to the two ends of the air duct box respectively, and the rotational flow fan is fixed to one end of the motor. The rotational flow fan comprises an air box fixed to one end of the motor and an axial flow paddle fixed to the output end of the motor, and the axial flow paddle is rotationally installed on the inner side of the air box so as to provide cooling airflow. According to the utility model, the air channel box and the rotational flow fan are arranged, and the airflow guiding and axial conveying design of the air box and the axial flow paddle is utilized, so that the synchronous cooling treatment of the motor and the control box is realized, the airflow can be guided to dissipate heat when the equipment runs, the damage of a circuit board and the motor caused by overhigh temperature is prevented, and the service life of the equipment is prolonged.
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Description

Technical Field

[0001] This utility model relates to the field of motor installation technology, specifically to a motor circuit board structure with cooling function. Background Technology

[0002] In existing motor and circuit board cooling systems, heat sinks, fans, and passive cooling methods are commonly used to reduce equipment temperature. These devices mostly consist of simple heat sinks directly mounted on the motor or circuit board surface to increase the heat dissipation area. Meanwhile, traditional cooling fans are used to force hot air outwards during operation to achieve cooling. However, due to their simple structure, the cooling effect of these traditional cooling systems gradually weakens after prolonged operation. Furthermore, most existing motor and circuit board cooling solutions lack effective filtration of incoming airflow, allowing dust to enter the equipment and accumulate on the heat sinks and circuit board surfaces, further affecting cooling efficiency and the equipment's lifespan.

[0003] The main shortcomings of existing technologies are as follows: First, traditional fan and heat sink designs cannot effectively guide airflow for heat dissipation, resulting in low cooling efficiency. Especially under high-speed motor operation or high-temperature environments, the circuit board and motor are prone to overheating and damage. Second, existing cooling systems are typically only used for cooling the motor motor itself, thus avoiding heat conduction between the motor and the circuit board. Furthermore, due to the lack of effective heat-conducting materials and airflow channels in traditional cooling structures, heat easily accumulates inside the equipment and cannot be quickly dissipated, reducing the equipment's stability and lifespan. In view of this, this study aims to address these problems by providing a motor circuit board structure with cooling capabilities to solve the existing issues and improve its practical value. Utility Model Content

[0004] The present invention aims to solve the technical problems existing in the prior art or related technologies.

[0005] This utility model discloses a motor circuit board structure with cooling function, including: a motor, a control box, an air duct box, and a vortex fan. In this embodiment, the control box and the vortex fan are respectively fixed to both ends of the air duct box, and the vortex fan is fixed to one end of the motor. The vortex fan includes an air box fixed to one end of the motor and an axial flow propeller fixed to the output end of the motor, the axial flow propeller being rotatably mounted inside the air box. A cooling guide block is fixedly mounted on the surface of the motor, and an exhaust fan connected to the top surface of the cooling guide block is fixedly mounted on the bottom surface of the air duct box. Exhaust grilles are formed on the surface of the air box.

[0006] Through this structural design, the vortex fan can guide the cooling airflow to the motor and control box through the rotation of the axial propeller, thereby achieving efficient heat dissipation and ensuring the stable operation of the circuit board in high-temperature environments.

[0007] In a preferred embodiment, this invention can be further configured such that: a circuit board is provided inside the control box, and an air intake filter is provided on the surface of the control box; the air intake filter is used for airflow introduction and filtration and dust suppression of the introduced airflow. By providing an air intake filter on the surface of the control box, not only can external airflow be guided in, but dust can also be effectively filtered, preventing impurities from entering the interior and affecting the heat dissipation performance of the equipment.

[0008] In a preferred embodiment, this invention can be further configured such that: the bottom surface of the air duct box is provided with a first air inlet communicating with an exhaust fan, and the bottom end of the air duct box is provided with a second air inlet communicating with the air box. With this design, cooling airflow can flow between the first and second air inlets, thereby accelerating the cooling speed and effectively reducing the equipment temperature.

[0009] In a preferred embodiment, this invention can be further configured such that the surface of the cooling guide block is provided with a plurality of fins, and a heat dissipation gap communicating with an exhaust fan is provided between adjacent fins. By adding fins and heat dissipation gaps to the surface of the cooling guide block, the heat dissipation area is increased, the heat dissipation efficiency of the equipment is improved, and temperature control of the circuit board and motor during long-term operation is ensured.

[0010] In a preferred embodiment, this invention can be further configured such that: an axial flow propeller is used for axial airflow delivery, and the airflow output direction of the axial flow propeller is introduced through a second air inlet and discharged through an exhaust grille. Through the synergistic effect of the axial flow propeller and the exhaust grille, the airflow can form an efficient cooling circuit inside the equipment, improving heat dissipation.

[0011] In a preferred embodiment, this invention can be further configured such that the cooling guide block is a metal aluminum block structure, and a thermal grease layer is provided between the cooling guide block and the motor. By providing the thermal grease layer, the heat transfer efficiency between the cooling guide block and the motor is improved, thereby further enhancing the overall heat dissipation performance of the equipment.

[0012] Through the above-mentioned structural designs, this utility model effectively extends the service life of the motor and circuit board while ensuring heat dissipation, and improves the stability and reliability of the equipment in high-temperature environments.

[0013] The beneficial effects achieved by this utility model are as follows:

[0014] 1. In this utility model, by setting up an air duct box and a vortex fan, and utilizing the airflow guidance and axial conveying design of the air duct box and axial propeller, synchronous cooling of the motor and control box is achieved. This can guide airflow for heat dissipation during equipment operation, prevent damage to the circuit board and motor due to excessive temperature, and thus extend the service life of the equipment.

[0015] 2. In this utility model, by setting an air intake filter and a heat dissipation gap first air intake hole in the control box, the incoming airflow can effectively filter dust when it is introduced into the equipment, and the heat dissipation efficiency is improved by the heat dissipation fins and thermal grease layer of the cooling guide block, thereby further ensuring the stability of the equipment under long-term operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the air duct box installation structure according to an embodiment of the present utility model;

[0018] Figure 3 This is an exploded view of the air duct box and vortex fan according to one embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the air duct box structure according to an embodiment of the present utility model.

[0020] Figure label:

[0021] 100 Motor; 110 Cooling guide block; 200 Control box; 210 Intake filter; 300 Air duct box; 310 Exhaust fan; 320 First air intake; 330 Second air intake; 400 Swirl fan; 410 Air box; 420 Axial propeller; 411 Exhaust grille hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0023] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this invention.

[0024] The following is in conjunction with the appendix Figures 1-4 This invention describes a motor circuit board structure with cooling function, provided by some embodiments of the present invention.

[0025] This utility model discloses a motor circuit board structure with cooling function, including: a motor 100, a control box 200, an air duct box 300, and a vortex fan 400. In this embodiment, the control box 200 and the vortex fan 400 are respectively fixed to both ends of the air duct box 300, and the vortex fan 400 is fixed to one end of the motor 100. The vortex fan 400 includes an air box 410 fixed to one end of the motor 100 and an axial flow propeller 420 fixed to the output end of the motor 100. The axial flow propeller 420 is rotatably mounted inside the air box 410 to provide cooling airflow. A cooling guide block 110 is fixedly mounted on the surface of the motor 100, and an exhaust fan 310 connected to the top surface of the cooling guide block 110 is fixedly mounted on the bottom surface of the air duct box 300. An exhaust grille hole 411 is opened on the surface of the air box 410 for discharging cooling airflow.

[0026] In this embodiment, the rotation of the axial propeller 420 within the air box 410 achieves efficient airflow guidance, introducing external cold air into the equipment for heat dissipation, and expelling hot air through the exhaust grille 411. The surface fins and thermal grease layer of the cooling guide block 110 effectively improve heat dissipation efficiency, ensuring that the electronic components inside the motor 100 and control box 200 remain stable even in high-temperature environments.

[0027] In another embodiment, the present invention further optimizes the internal structure of the control box 200 and the air duct box 300 to improve cooling and dust prevention effects. In this embodiment, a circuit board is provided inside the control box 200, and an air intake filter 210 is provided on the surface of the control box 200 for introducing and filtering cooling airflow. The air intake filter 210, with its multiple small holes, can effectively filter the incoming airflow and prevent dust from entering the equipment.

[0028] Furthermore, in this embodiment, the bottom surface of the air duct box 300 is provided with a first air inlet 320 communicating with the exhaust fan 310, and a second air inlet 330 communicating with the air box 410 is provided at the bottom end of the air duct box 300. The channel design of the first air inlet 320 and the second air inlet 330 allows the cooling airflow to circulate inside the equipment, improving heat dissipation efficiency. The axial flow propeller 420 introduces cold air through the second air inlet 330 and discharges the heated airflow through the exhaust grille 411, thereby forming a complete cooling circuit.

[0029] Based on the two embodiments above, this utility model can be further configured as follows: the surface of the cooling guide block 110 is provided with a plurality of fins, and a heat dissipation gap communicating with the exhaust fan 310 is provided between adjacent fins. By adding fins to the surface of the cooling guide block 110, the heat dissipation area is increased, and the airflow is guided through the heat dissipation gaps to pass through more quickly, thereby improving the heat dissipation efficiency. In addition, the cooling guide block 110 is a metal aluminum block structure, and a thermal grease layer is provided between it and the motor 100 to ensure that heat can be transferred quickly.

[0030] In a further optimization of this embodiment, the axial flow propeller 420 is used for axial airflow delivery, with its airflow output direction introduced through the second air inlet 330 and discharged through the exhaust grille 411. This design ensures that the cooling airflow forms an efficient cooling cycle inside the equipment, thereby significantly improving the overall heat dissipation effect and ensuring the stability of the equipment under long-term high-load operation.

[0031] Through the above structural design, this utility model can not only effectively solve the heat dissipation problem of the equipment in high-temperature environments, but also ensure the long-term stable operation of the equipment and extend its service life by introducing airflow filtration and the application of thermally conductive materials.

[0032] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A motor circuit board structure having a cooling function, characterized by comprising: Include: Motor (100), control box (200), air duct box (300) and cyclone fan (400), the control box (200) and cyclone fan (400) are fixed at both ends of the air duct box (300) respectively and the cyclone fan (400) is fixed at one end of the motor (100), the cyclone fan (400) includes the air box (410) fixed at one end of the motor (100) and the axial flow paddle (420) fixed at the output end of the motor (100), the axial flow paddle (420) is rotatably installed on the inside of the air box (410), the surface of the motor (100) is fixedly installed with cooling guide block (110), the bottom surface of the air duct box (300) is fixedly installed with exhaust fan (310) connected with the top surface of the cooling guide block (110), the surface of the air box (410) is provided with exhaust grid hole (411).

2. The motor circuit board structure having a cooling function according to claim 1, wherein The inside of the control box (200) is provided with a motor circuit board, the surface of the control box (200) is provided with an air inlet filter grid (210), the air inlet filter grid (210) is used for air flow introduction and air flow filtration dust removal treatment.

3. The motor circuit board structure having a cooling function according to claim 1, wherein The bottom surface of the air duct box (300) is provided with a first air inlet hole (320) communicated with the exhaust fan (310), and the bottom end of the air duct box (300) is provided with a second air inlet hole (330) communicated with the air box (410).

4. The motor circuit board structure having a cooling function according to claim 1, wherein The surface of the cooling guide block (110) is provided with a plurality of fins, and the adjacent fins are provided with heat dissipation gaps communicated with the exhaust fan (310).

5. The motor circuit board structure having a cooling function according to claim 1, wherein The axial flow paddle (420) is used for axial delivery of air flow, and the air flow output direction of the axial flow paddle (420) is guided by the second air inlet hole (330) and discharged through the exhaust grid hole (411).

6. The motor circuit board structure having a cooling function according to claim 1, wherein The cooling guide block (110) is a metal aluminum block structure, and a heat conducting grease layer is arranged between the cooling guide block (110) and the motor (100).