Efficient air-cooled permanent magnet motor

Abstract

The utility model relates to the technical field of motors, in particular to a high-efficiency air-cooled permanent magnet motor, which comprises a casing, a rotor mounted in the casing, a permanent magnet mounted on the outer wall of the rotor, a stator mounted on the inner wall of the casing, a heat dissipation assembly mounted at one end of the casing, heat dissipation fins mounted on the outer wall of the casing, and a heat dissipation assembly comprising a casing, fan blades are installed in the shell and fixed to a fan blade shaft, and one end of the fan blade shaft is rotationally connected with the inner wall of the shell through a bearing. According to the high-efficiency air-cooled permanent magnet motor, the advanced heat dissipation assembly design is adopted in the motor, the fan blade shaft is directly driven by the rotor, synchronous operation of motor operation and the heat dissipation fan is achieved, an extra power source is not needed, energy consumption is reduced, and heat dissipation efficiency is improved. An air inlet and an air outlet are formed in a shell of the heat dissipation assembly, and are matched with an air inlet dustproof net, a water baffle and an air supply channel, so that sufficient air circulation is ensured, dust and moisture are effectively prevented from invading, and the interior of the motor is ensured to be clean and dry.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a high-efficiency air-cooled permanent magnet motor. Background Technology

[0002] In modern industrial production and daily life, electric motors, as key equipment for energy conversion, directly affect the operating performance and energy consumption levels of various mechanical devices. Permanent magnet motors, with their advantages of high efficiency, high power density, low noise, and good stability, have been widely used in many fields. However, with the increase in motor power and the diversification of working environments, the problem of motor heat dissipation has become increasingly prominent, becoming one of the key factors restricting further performance improvements.

[0003] Traditional permanent magnet motors typically employ natural cooling or simple air cooling. These methods are often insufficient to meet the cooling requirements of motors operating at high power density and for extended periods of continuous operation. Excessive operating temperature not only reduces motor efficiency but also accelerates the aging of internal components, shortens the motor's lifespan, and may even pose safety hazards.

[0004] Therefore, developing a permanent magnet motor with efficient heat dissipation capabilities is particularly important. By optimizing the motor's structural design and adopting more advanced heat dissipation technologies, such as enhancing air cooling and making reasonable use of the motor's internal space for heat exchange, the motor's heat dissipation performance can be effectively improved. This ensures that the motor maintains stable operation even under high-power, high-density working environments, extends the motor's service life, and improves the motor's overall performance and reliability. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency air-cooled permanent magnet motor to solve the problem mentioned in the background art that traditional permanent magnet motors usually use natural cooling or simple air cooling methods, which are often difficult to meet the heat dissipation requirements of motors with high power density and long-term continuous operation.

[0006] To achieve the above objectives, this utility model provides a high-efficiency air-cooled permanent magnet motor, including a housing, a rotor installed inside the housing, permanent magnets installed on the outer wall of the rotor, a stator installed on the inner wall of the housing, a heat dissipation assembly installed at one end of the housing, heat dissipation fins installed on the outer wall of the housing, the heat dissipation assembly including an outer shell, a fan blade installed inside the outer shell, the fan blade being fixed on a fan blade shaft, and one end of the fan blade shaft being rotatably connected to the inner wall of the outer shell via a bearing.

[0007] Preferably, a shaft is mounted on one end of the rotor, and the end of the shaft extends out of the housing.

[0008] Preferably, an end cap is installed at the end of the housing away from the heat dissipation components.

[0009] Preferably, a junction box is installed on the top of the housing.

[0010] Preferably, the heat dissipation fins are arranged in a ring at equal intervals on the outer wall of the housing.

[0011] Preferably, one end of the fan blade shaft is driven by a rotor.

[0012] Preferably, an air inlet is provided on the outer side of the housing, and an air inlet dustproof net, a water baffle and an air supply channel are installed in sequence inside the air inlet.

[0013] Preferably, the surface of the baffle plate is provided with several air inlet channels, which are inclined and the air supply channel is horizontal. The top of the air inlet channel is connected to the air supply channel. An air outlet is provided on the side of the outer shell away from the air inlet. The air outlet has a ring structure and the outer side of the air outlet is aligned with the heat dissipation fins. An air outlet dustproof net is installed on the inner wall of the air outlet.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This high-efficiency air-cooled permanent magnet motor employs an advanced heat dissipation component design. The fan blade shaft is directly driven by the rotor, achieving synchronous operation of the motor and the cooling fan. This eliminates the need for an external power source, reducing energy consumption and improving heat dissipation efficiency. The heat dissipation component's outer casing features air inlets and outlets, along with an inlet dust filter, a water baffle, and an air delivery channel. This ensures ample airflow while effectively preventing the intrusion of dust and moisture, maintaining the cleanliness and dryness of the motor's interior.

[0016] Furthermore, the annularly spaced heat dissipation fins on the outer wall of the casing significantly increase the heat dissipation area, allowing heat to be transferred to the surrounding environment more quickly and further improving the heat dissipation effect. These design features work together to ensure that the high-efficiency air-cooled permanent magnet motor of this invention maintains a low operating temperature even under prolonged, high-power-density operating conditions, thereby effectively extending the motor's service life and improving its stability and reliability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of one side of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the heat dissipation component in this utility model;

[0020] The meanings of the labels in the diagram are as follows:

[0021] 1. Housing; 11. Heat dissipation fins; 2. Rotor; 3. Stator; 5. Permanent magnet; 6. Junction box; 7. End cover; 8. Shaft; 9. Heat dissipation assembly; 91. Outer shell; 911. Air outlet; 912. Air outlet dust filter; 913. Air inlet; 92. Fan blade; 93. Fan blade shaft; 94. Air inlet dust filter; 95. Water baffle; 96. Air supply channel. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides a high-efficiency air-cooled permanent magnet motor, such as Figures 1-3 As shown, the motor includes a housing 1, inside which a rotor 2 is installed. A permanent magnet 5 is mounted on the outer wall of the rotor 2. A stator 3 is mounted on the inner wall of the housing 1. A heat dissipation assembly 9 is mounted at one end of the housing 1, and heat dissipation fins 11 are mounted on the outer wall of the housing 1. The heat dissipation assembly 9 includes a housing 91, inside which fan blades 92 are installed. The fan blades 92 are fixed to a fan blade shaft 93, and one end of the fan blade shaft 93 is rotatably connected to the inner wall of the housing 91 via a bearing. When the rotor 2 inside the motor rotates, the permanent magnet 5 mounted on its outer wall interacts with the stator 3 on the inner wall of the housing 1, generating electromagnetic force to drive the motor to rotate. Simultaneously, one end of the rotor 2 drives the fan blade shaft 93 to rotate, thereby causing the fan blades 92 to rotate at high speed within the housing 91, forming a strong airflow. This airflow directly blows onto the outer wall of the housing 1 and the heat dissipation fins 11, effectively carrying away the heat generated during motor operation, greatly improving heat dissipation efficiency, and ensuring the stability and reliability of the motor under high load and long-term operation.

[0024] The ingenious combination of the housing 91 of the heat dissipation component 9 with the fan blades 92 and the fan blade shaft 93, as well as the bearing rotation connection between the fan blade shaft 93 and the inner wall of the housing 91, not only ensures the smooth operation of the cooling fan, but also reduces the heat and noise generated by friction, thereby improving the overall performance and service life of the motor.

[0025] The heat dissipation fins 11 installed on the outer wall of the housing 1 are arranged in a ring with equal spacing, which greatly increases the heat dissipation area, allowing heat to be transferred to the surrounding environment more quickly and evenly, and further improving the heat dissipation effect of the motor.

[0026] The entire heat dissipation component 9 is compactly integrated with the main motor structure, saving space and facilitating installation and maintenance. Furthermore, the independent design of the heat dissipation component allows for easy replacement or repair when needed, reducing motor maintenance costs.

[0027] In this embodiment, a rotating shaft 8 is installed at one end of the rotor 2, and the end of the rotating shaft 8 extends out of the housing 1. This facilitates connection with external equipment or transmission mechanisms, enabling flexible connection between the motor and other mechanical components, and enhancing the versatility and applicability of the motor.

[0028] Specifically, an end cover 7 is installed at the end of the housing 1 furthest from the heat dissipation component 9. This protects the internal parts of the motor from external dust, moisture, and other impurities, improving the motor's sealing and protection level. At the same time, the end cover 7 facilitates internal inspection and maintenance of the motor, ensuring its long-term stable operation.

[0029] Furthermore, a junction box 6 is installed on the top of the housing 1. The junction box 6 makes the electrical connections of the motor more centralized and standardized, facilitating wiring and maintenance. It effectively protects the internal electrical components of the motor, preventing electrical faults caused by improper wiring or external factors, thus improving the safety and reliability of the motor.

[0030] Furthermore, the heat dissipation fins 11 are arranged in a ring at equal intervals on the outer wall of the housing 1. This arrangement allows the heat dissipation fins 11 to fully utilize the outer surface of the housing 1 for heat dissipation, increasing the heat dissipation area and improving heat dissipation efficiency. At the same time, the ring-shaped equal interval arrangement also ensures the uniformity of heat dissipation, avoids local overheating, and helps extend the service life of the motor.

[0031] Furthermore, one end of the fan blade shaft 93 is driven by the rotor 2. This design enables synchronous operation of the motor rotation and the cooling fan, eliminating the need for an additional power source and reducing energy consumption. Simultaneously, the rotor 2 directly drives the fan blade shaft 93 to rotate, ensuring efficient and stable operation of the cooling fan and improving the overall performance of the motor.

[0032] Furthermore, an air inlet 913 is provided on the outer side of the outer casing 91. Inside the air inlet 913, an air inlet dust filter 94, a water baffle 95, and an air supply channel 96 are installed sequentially. The design of the air inlet 913 ensures that the cooling fan has sufficient airflow, while the air inlet dust filter 94 effectively blocks dust and other impurities from entering the motor, protecting the cleanliness of the motor. The combined use of the water baffle 95 and the air supply channel 96 prevents moisture from entering the motor and ensures smooth airflow, improving the heat dissipation effect.

[0033] Furthermore, the surface of the baffle plate 95 is provided with several air inlet channels, which are inclined, while the air supply channel 96 is horizontal. The top of the air inlet channel is connected to the air supply channel 96. An air outlet 911 is provided on the side of the outer shell 91 away from the air inlet 913. The air outlet 911 has a ring structure, and its outer side is aligned with the heat dissipation fins 11. An air outlet dustproof net 912 is installed on the inner wall of the air outlet 911. The inclined air inlet channel design helps guide airflow into the air supply channel 96 at a more optimized angle, improving airflow efficiency. The horizontally positioned air supply channel 96 ensures uniform airflow distribution inside the motor, enhancing heat dissipation. The ring structure of the air outlet 911, aligned with the heat dissipation fins 11, allows airflow to directly blow onto the heat dissipation fins 11, further improving heat dissipation efficiency. The air outlet dustproof net 912 installed on the inner wall of the air outlet 911 effectively prevents dust and other impurities from entering the external environment of the motor when discharged with the airflow, maintaining the cleanliness of the motor.

[0034] When the high-efficiency air-cooled permanent magnet motor of this invention is in use, the internal rotor 2 starts to rotate when the motor is started. The permanent magnet 5 installed on its outer wall interacts with the stator 3 on the inner wall of the housing 1, generating a strong electromagnetic force, thereby driving the motor to rotate. In this process, the rotor 2 not only realizes the power output of the motor, but also transmits rotational power through the rotating shaft 8 installed at one end (the end of the rotating shaft 8 extends out of the housing 1 for easy connection with external equipment).

[0035] Simultaneously, the rotation of rotor 2 also drives the rotation of fan blade shaft 93. One end of fan blade shaft 93 is rotatably connected to the inner wall of housing 91 via bearings, ensuring smooth rotation and low noise. The rotation of fan blade shaft 93 then drives fan blade 92 to rotate at high speed inside housing 91, forming a strong airflow. Guided by housing 91, this airflow directly blows onto the outer wall of housing 1 and the annularly spaced heat dissipation fins 11, effectively carrying away the heat generated during motor operation.

[0036] The heat dissipation component 9 is particularly ingeniously designed, with an air inlet 913 and an air outlet 911 on its outer casing 91. Inside the air inlet 913, a dust filter 94, a water baffle 95, and an air delivery channel 96 are installed sequentially, ensuring sufficient airflow while effectively preventing the intrusion of dust and moisture. The inclined air inlet channel design on the surface of the water baffle 95 optimizes the airflow entry angle and improves circulation efficiency. The horizontally positioned air delivery channel 96 ensures uniform airflow distribution within the motor.

[0037] The air outlet 911 has a ring-shaped structure and is aligned with the heat dissipation fins 11, allowing the airflow to directly and efficiently blow onto the heat dissipation fins 11, further improving the heat dissipation effect. The air outlet dust filter 912 installed on the inner wall of the air outlet 911 effectively prevents dust and other impurities from polluting the external environment of the motor when they are discharged with the airflow.

[0038] The entire heat dissipation process is synchronized with the motor's operation, requiring no additional power source and reducing energy consumption. Furthermore, the compact integration of the heat dissipation component 9 with the motor's main structure not only saves space but also facilitates installation, maintenance, and replacement, reducing motor maintenance costs.

[0039] Finally, it should be noted that the electronic components in the junction box 6 and other components in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency air-cooled permanent magnet motor, comprising a housing (1), characterized in that: The housing (1) is equipped with a rotor (2) inside. The outer wall of the rotor (2) is equipped with a permanent magnet (5). The inner wall of the housing (1) is equipped with a stator (3). A heat dissipation assembly (9) is installed at one end of the housing (1). Heat dissipation fins (11) are installed on the outer wall of the housing (1). The heat dissipation assembly (9) includes a shell (91). A fan blade (92) is installed inside the shell (91). The fan blade (92) is fixed on a fan blade shaft (93). One end of the fan blade shaft (93) is rotatably connected to the inner wall of the shell (91) through a bearing.

2. The high-efficiency air-cooled permanent magnet motor according to claim 1, characterized in that: One end of the rotor (2) is equipped with a rotating shaft (8), and the end of the rotating shaft (8) extends out of the housing (1).

3. The high-efficiency air-cooled permanent magnet motor according to claim 1, characterized in that: An end cap (7) is installed on the end of the housing (1) away from the heat dissipation component (9).

4. The high-efficiency air-cooled permanent magnet motor according to claim 1, characterized in that: A junction box (6) is installed on the top of the housing (1).

5. The high-efficiency air-cooled permanent magnet motor according to claim 1, characterized in that: The heat dissipation fins (11) are arranged in a ring at equal intervals on the outer wall of the casing (1).

6. The high-efficiency air-cooled permanent magnet motor according to claim 1, characterized in that: One end of the fan blade shaft (93) is driven by the rotor (2).

7. The high-efficiency air-cooled permanent magnet motor according to claim 1, characterized in that: An air inlet (913) is provided on the outer side of the outer shell (91), and an air inlet dustproof net (94), a water baffle (95) and an air supply channel (96) are installed in sequence inside the air inlet (913).

8. The high-efficiency air-cooled permanent magnet motor according to claim 7, characterized in that: The surface of the baffle plate (95) is provided with several air inlet channels, which are inclined. The air supply channel (96) is horizontal. The top of the air inlet channel is connected to the air supply channel (96). The outer shell (91) is provided with an air outlet (911) on the side away from the air inlet (913). The air outlet (911) is a ring structure. The outer side of the air outlet (911) is aligned with the heat dissipation fins (11). The inner wall of the air outlet (911) is equipped with an air outlet dustproof net (912).

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