Heat dissipation and diversion structure of air-cooled motor

Abstract

The utility model discloses an air-cooled motor heat radiation diversion structure, comprising a motor shell cylinder and a stator, the motor shell cylinder is cylindrical, the stator is arranged in the motor shell cylinder, the inner wall of the motor shell cylinder is provided with a plurality of support strips, the support strips support the outer peripheral surface of the stator, so that the stator and the motor shell cylinder are kept coaxial, and the stator and the motor shell cylinder are coaxial. The supporting strips divide the gap between the stator and the motor shell cylinder into a plurality of airflow channels, air sucked from one end of the motor shell cylinder passes through the airflow channels and then is blown out from the other end, and the motor shell cylinder and the stator are cooled. According to the utility model, the cooling airflow channel is arranged between the motor shell and the stator, and a special flow guide structure is adopted, so that wind noise is reduced, and the overall heat dissipation capability of the motor is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air-cooled motors, and in particular relates to a heat dissipation and flow guiding structure for air-cooled motors. Background Art

[0002] In recent years, the development of motors towards high precision, miniaturization, lightweight and mechatronics has brought about problems such as a sharp increase in the internal heat generation of the motor and a serious lack of effective heat dissipation space. Therefore, the heat dissipation problem has become a bottleneck for the motor system to further develop towards high power density. Excessive temperature rise inside the motor will not only shorten the life of the insulation material inside the motor, but also reduce the operating efficiency of the motor, increase the heat generation, and cause the motor temperature to rise further, forming a vicious cycle, which seriously affects the life of the motor and the safety of the motor operation. For small and medium-sized motors, heat dissipation mainly relies on the external fan to generate wind pressure and the wind hood to guide the flow. The cooling medium air blows across the shell surface to bring the heat generated by the motor to the surrounding environment. This shell forced air cooling method increases the power consumption of the motor system and the noise of the motor operation to a certain extent, and can only dissipate heat from the motor shell. There is no heat dissipation structure inside the motor, so the heat dissipation efficiency is low and the heat dissipation is uneven. Utility Model Content

[0003] In response to the above problems and technical requirements, the utility model provides a heat dissipation guide structure for an air-cooled motor, a cooling air flow channel is set between the motor housing and the stator, and a special guide structure is used to reduce wind noise and increase the overall heat dissipation capacity of the motor.

[0004] The technical solution of the utility model is as follows: an air-cooled motor heat dissipation and flow guiding structure, including a motor shell cylinder and a stator, the motor shell cylinder is cylindrical, the stator is arranged in the motor shell cylinder, a plurality of support bars are arranged on the inner wall of the motor shell cylinder, the support bars support the outer peripheral surface of the stator, so that the stator and the motor shell cylinder remain coaxial, and the support bars divide the gap between the stator and the motor shell cylinder into a plurality of air flow channels, and the air sucked from one end of the motor shell cylinder passes through the air flow channel and blows out from the other end to cool the motor shell cylinder and the stator. This solution sets an air flow channel capable of ventilation and heat dissipation inside the motor, and the air flow channel is the gap between the stator and the motor shell cylinder, so the motor can be cooled directly inside. Compared with the external wind hood cooling, the internal cooling is more direct, the cooling is more uniform, and the cooling efficiency is higher.

[0005] Furthermore, a flanged flange is provided at the port of the air inlet end of the motor housing cylinder, and a circle of guide plates are provided on the flanged flange. The guide plates are arc-shaped plates perpendicular to the flanged flange. The external airflow first passes through the airflow channel, and then passes through the guide plates to form a vortex airflow and is discharged outward. The guide plates can guide the wind coming from the front, and the cooling airflow is blown to the guide plates through the airflow channel, and then radiated and dispersed by the guide plates to the periphery, which can slow down the airflow flow speed, enhance the cooling effect, and reduce the whistling and high-frequency noise generated by high-speed air.

[0006] Furthermore, the inner wall of the motor housing cylinder is provided with four support bars at equal angles around the circumference, the support bars cover the entire length of the motor housing cylinder in the axial direction, the ends of the support bars extend and cover the flanged flanges, the support bars protrude toward the center of the motor housing cylinder, the stator is fixedly mounted in the middle of the support bars, and four airflow channels are formed between the stator and the motor housing cylinder. The airflow channels allow cooling wind to pass through, and the cooling wind directly cools the stator and the motor housing cylinder, resulting in a better cooling effect.

[0007] Furthermore, a wedge-shaped block is provided in the middle of the support bar, and the thickness of the wedge-shaped block gradually increases from the air inlet end to the air outlet end of the motor shell cylinder, and a plurality of wedge-shaped blocks together clamp the stator in the motor shell cylinder. The stator is installed from the air inlet end of the motor shell cylinder, and as the wedge-shaped block thickens, the outer periphery of the stator is gradually clamped between the wedge-shaped blocks, thereby realizing the clamping connection between the stator and the motor shell cylinder. The clamping connection does not require the opening of fixed holes, can facilitate disassembly and assembly, and can also prevent external foreign matter from entering the stator, thereby protecting the operation of the motor.

[0008] Furthermore, the end of the support bar extending to the flange is provided with a mounting screw hole, which is used for mounting the external fan structure.

[0009] Furthermore, a plurality of axial reinforcing ribs are provided on the outer circumference of the motor housing cylinder, and the axial reinforcing ribs strengthen the strength of the motor housing cylinder and provide a better supporting effect on the stator.

[0010] Furthermore, a housing fixing hole is provided on the peripheral surface of the motor housing cylinder, and the housing fixing hole is provided at the rear of the motor housing cylinder. The housing fixing hole is used to fix and install the motor housing cylinder as a whole, so that the motor can run in a stable state.

[0011] Furthermore, a tail end screw hole is provided on the tail end surface of the motor housing cylinder, and the tail end screw hole corresponds to the position of the support bar one by one.

[0012] Compared with the prior art, the utility model has the following beneficial effects: 1) an air flow channel is provided between the stator and the motor casing, and cooling wind can penetrate the air flow channel to directly cool the stator and the motor casing, so that the heat dissipation is more uniform and the heat dissipation efficiency is higher; 2) a plurality of support bars are used to realize a snap-on connection between the stator and the motor casing, which is not only more convenient for disassembly and assembly, but also does not require additional hole connections, can prevent foreign objects from falling into the motor, has a protective function, and has high motor stability; 3) a guide plate is provided at the air inlet end of the motor casing, and the external air flow sucked in from the air flow channel forms a vortex airflow after passing through the guide plate, which radiates and blows to the periphery, breaking up the straight wind into a vortex airflow, which can avoid howling and high-frequency noise when passing through the air flow channel at high speed, and not only increases the heat dissipation capacity, but also improves the noise of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the overall structural diagram of the heat dissipation and flow guiding structure of the air-cooled motor of the utility model;

[0014] Figure 2 This is a tail structure diagram of the heat dissipation and flow guiding structure of the air-cooled motor of the utility model;

[0015] Figure 3 This is a structural diagram of the motor housing cylinder in the utility model;

[0016] Figure 4 It is an axial cross-sectional view of the motor housing cylinder in the utility model;

[0017] Marked in the figure are: motor housing cylinder 1, flanging flange 11, guide plate 111, mounting screw hole 12, axial reinforcement rib 13, housing fixing hole 14, tail end screw hole 15, stator 2, support bar 3, wedge-shaped block 31, air flow channel 4. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] like Figure 1-4 The figure shows the heat dissipation and flow guiding structure of the air-cooled motor of the utility model, which includes a motor shell cylinder 1 and a stator 2. The motor shell cylinder 1 is cylindrical, and the stator 2 is arranged in the motor shell cylinder 1. A plurality of support bars 3 are provided on the inner wall of the motor shell cylinder 1. The support bars 3 support the outer peripheral surface of the stator 2 so that the stator 2 and the motor shell cylinder 1 remain coaxial. The support bars 3 divide the gap between the stator 2 and the motor shell cylinder 1 into a plurality of air flow channels 4.

[0020] The inner wall of the motor shell cylinder 1 is provided with four support bars 3 at equal angles around the circumference, and the support bars 3 cover the entire length of the motor shell cylinder 1 in the axial direction, and the ends of the support bars 3 extend and cover the flange flange 11, and the support bars 3 protrude toward the center direction of the motor shell cylinder 1, and the stator 2 is fixedly installed in the middle of the support bars 3, and four air flow channels 4 are formed between the stator 2 and the motor shell cylinder 1. Specifically, a wedge-shaped block 31 is provided in the middle of the support bar 3, and the thickness of the wedge-shaped block 31 gradually increases from the air inlet end to the air outlet end of the motor shell cylinder 1, and a plurality of wedge-shaped blocks 31 together clamp the stator 2 in the motor shell cylinder 1. The stator 2 is installed from the air inlet end of the motor shell cylinder 1, and as the wedge-shaped blocks 31 thicken, the outer periphery of the stator 2 is gradually clamped between the wedge-shaped blocks 31, so that the stator 2 and the motor shell cylinder 1 are clamped, and the clamping connection does not require the opening of fixed holes, which can facilitate disassembly and assembly, and can also prevent external foreign matter from entering the stator, thereby protecting the operation of the motor.

[0021] The motor housing cylinder 1 is provided with a flanged flange 11 at the port of the air inlet end, and a circle of guide plates 111 are provided on the flanged flange 11. The guide plates 111 are arc-shaped plates perpendicular to the flanged flange 11. The external airflow first passes through the airflow channel 4, and then passes through the guide plates to form a vortex airflow and is discharged outward. The air blown in from one end of the motor housing cylinder 1 passes through the airflow channel 4 and then blows out from the other end, cooling the motor housing cylinder 1 and the stator 2. The guide plates 111 can guide the passing airflow into a vortex airflow that diverges outward. The airflow radiates outward through the guide plates, and the heat dissipation efficiency is high. While enhancing the cooling effect, the whistling and high-frequency noise generated by high-speed air are reduced.

[0022] The support bar 3 is extended to the end of the flanged flange 11 and is provided with a mounting screw hole 12. The mounting screw hole 12 is used for the installation of an external fan structure. After the fan structure and the flanged flange 11 are installed correspondingly, cooling air can be blown into the motor. A plurality of axial reinforcing ribs 13 are provided on the outer circumference of the motor housing cylinder 1; a housing fixing hole 14 is provided on the circumference of the motor housing cylinder 1, and the housing fixing hole 14 is provided at the rear of the motor housing cylinder 1; a rear end screw hole 15 is provided on the rear end surface of the motor housing cylinder 1, and the rear end screw hole 15 corresponds to the position of the support bar 3 one by one.

[0023] The working principle of the utility model is as follows: the stator 2 and the motor shell cylinder 1 are installed by snap-fitting. During installation, the stator 2 is pushed inward from the air inlet end of the motor shell cylinder 1. As the wedge-shaped block 31 gradually thickens, the distance between the stator 2 and the wedge-shaped block 31 of the support bar 3 gradually decreases until the wedge-shaped block 31 completely clamps the outer periphery of the stator 2, thereby realizing the coaxial snap-fit ​​fixation of the stator 2 and the motor shell cylinder 1; under the supporting action of the four support bars 3, four air flow channels 4 are formed between the motor shell cylinder 1 and the stator 2, and the external fan is installed on the flange flange 11. The fan rotates in the opposite direction to inhale air. The air is sucked into the air flow channel through the air inlet end of the motor shell cylinder 1 to dissipate heat to the cylinder and the stator. After the cooling air reaches the other end, a circle of guide plates rectifies the high-speed air so that the airflow forms a vortex airflow and disperses outward. The vortex airflow has high heat dissipation efficiency and low heat dissipation noise, thereby avoiding heat flow from being retained in the cylinder.

[0024] The above are only several preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes and substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. The heat dissipation and flow guiding structure of the air-cooled motor is characterized by: It includes a motor shell cylinder and a stator. The motor shell cylinder is cylindrical. The stator is arranged in the motor shell cylinder. A plurality of support bars are arranged on the inner wall of the motor shell cylinder. The support bars support the outer peripheral surface of the stator so that the stator and the motor shell cylinder remain coaxial. The support bars divide the gap between the stator and the motor shell cylinder into a plurality of air flow channels. The air sucked in from one end of the motor shell cylinder passes through the air flow channel and is blown out from the other end to cool the motor shell cylinder and the stator.

2. The heat dissipation and flow guiding structure of the air-cooled motor according to claim 1, characterized in that: A flanged flange is provided at the port of the air inlet end of the motor housing cylinder, and a circle of guide plates is provided on the flanged flange. The guide plates are arc-shaped plates perpendicular to the flanged flange. External airflow first passes through the airflow channel, and then passes through the guide plates to form a vortex airflow and is discharged outward.

3. The heat dissipation and flow guiding structure of the air-cooled motor according to claim 2 is characterized in that: The inner wall of the motor casing is provided with four support bars at equal angles around the circumference, the support bars cover the entire length of the motor casing in the axial direction, the ends of the support bars extend and cover the flanged flanges, the support bars protrude toward the center of the motor casing, the stator is fixedly installed in the middle of the support bars, and four air flow channels are formed between the stator and the motor casing.

4. The heat dissipation and flow guiding structure of the air-cooled motor according to claim 3 is characterized in that: A wedge-shaped block is provided in the middle of the support bar, and the thickness of the wedge-shaped block gradually increases from the air inlet end to the air outlet end of the motor shell cylinder. Multiple wedge-shaped blocks together clamp the stator in the motor shell cylinder.

5. The heat dissipation and flow guiding structure of the air-cooled motor according to claim 4, characterized in that: The end of the support bar extending to the flanging flange is provided with a mounting screw hole.

6. The heat dissipation and flow guiding structure of the air-cooled motor according to claim 5, characterized in that: A plurality of axial reinforcing ribs are arranged on the outer peripheral surface of the motor housing cylinder.

7. The heat dissipation and flow guiding structure of the air-cooled motor according to claim 6, characterized in that: A shell fixing hole is opened on the circumferential surface of the motor shell cylinder, and the shell fixing hole is arranged at the tail of the motor shell cylinder.

8. The heat dissipation and flow guiding structure of the air-cooled motor according to claim 7, characterized in that: A rear end screw hole is arranged on the rear end surface of the motor housing cylinder, and the rear end screw hole corresponds to the position of the support bar one by one.

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