Motor heat dissipation component

Abstract

The utility model relates to the field of motors, in particular to a motor heat dissipation component which comprises an outer cylinder, an inner cylinder is arranged in the outer cylinder, the outer cylinder and the inner cylinder are spaced from each other, a cooling channel for cooling airflow to pass through is formed between the outer cylinder and the inner cylinder, and a supporting pipe for fixedly connecting the outer cylinder and the inner cylinder is arranged between the outer cylinder and the inner cylinder. The outer cylinder and the inner cylinder are both provided with air outlet holes communicated with the supporting pipe, the front side of the inner cylinder is provided with an air baffle, the air baffle is provided with an avoiding hole for the rotor shaft to penetrate through, the outer cylinder is provided with an exhaust hood, the exhaust hood is provided with an exhaust pipe, the exhaust hood is buckled on the periphery of the outer cylinder in a sleeving mode, the exhaust hood comprises a surrounding cylinder, and the surrounding cylinder is arranged on the outer side of the outer cylinder in a sleeving mode. And side plates connected with the outer cylinder are arranged on the left side and the right side of the surrounding cylinder. The motor heat dissipation component enhances air flow through forced ventilation of the fan, remarkably improves heat dissipation efficiency, is simple in structure, does not need additional cooling media and complex equipment, is convenient to maintain, and reduces downtime and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of motors, and specifically to a heat dissipation component for motors. Background Technology

[0002] During motor operation, core components such as the stator and rotor generate a large amount of heat due to electromagnetic losses and mechanical friction. If this heat cannot be dissipated in time, it will cause the motor temperature to rise excessively, thus affecting its efficiency, lifespan, and even safety. A traditional motor includes a housing, in which a rotor assembly is rotatably mounted. The housing also houses the rotor assembly surrounding the stator. An air intake housing with air inlets is located at the rear, containing a fan impeller. The rotor assembly includes a rotor shaft, on which the fan impeller is mounted. When the motor is powered on, the rotor assembly drives the fan impeller to rotate. The fan impeller generates negative pressure within the air intake housing, and airflow passes through the housing into the casing to cool the rotor and stator assemblies.

[0003] Traditional motors have limited heat dissipation area, and the fan impeller can only cool one end of the motor stator and rotor, that is, the end closest to the fan impeller. The cooling airflow cannot penetrate deep into the casing, resulting in excessive local temperature rise at the other end of the casing, which may cause uneven thermal stress or even insulation aging, and needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a motor heat dissipation component that can optimize the heat dissipation path and increase the heat dissipation area to address the above problems.

[0005] To achieve the above objectives, this utility model discloses a motor heat dissipation component, including an outer cylinder. Its structural features are: an inner cylinder is provided inside the outer cylinder, the outer cylinder and the inner cylinder are spaced apart from each other, and a cooling channel for cooling airflow is formed between the outer cylinder and the inner cylinder. A support pipe is provided between the outer cylinder and the inner cylinder to fix the two together. Both the outer cylinder and the inner cylinder are provided with air outlet holes communicating with the support pipe. A baffle plate is installed on the front side of the inner cylinder, and a clearance hole for the rotor shaft to pass through is opened on the baffle plate.

[0006] By installing this heat dissipation component on the motor and optimizing the path of the cooling airflow, the cooling airflow is used to cool the motor stator and other heat-generating components. Compared with the traditional blower heat dissipation structure, it increases the heat dissipation area, so that both sides of the motor stator have a better cooling effect, reducing the overall operating cost. It is suitable for heat dissipation of high-power motors.

[0007] An exhaust hood is installed on the outer cylinder, and an exhaust pipe is installed on the exhaust hood. The exhaust hood is fitted onto the outer periphery of the outer cylinder. The combination of the exhaust hood and the exhaust pipe concentrates the exhaust of hot air and improves heat dissipation efficiency.

[0008] The exhaust hood includes a retaining cylinder that is fitted over the outer cylinder, with the retaining cylinder and the outer cylinder spaced apart from each other. Side plates connecting the outer cylinder are provided on the left and right sides of the retaining cylinder. The retaining cylinder and the outer cylinder form a cavity, in which hot air from multiple support pipes converges and is finally discharged to the outside through the exhaust pipe.

[0009] The outer wall of the outer cylinder has two positioning edges that are spaced apart from each other. Two side plates correspond one-to-one with the two positioning edges and are placed against the side of the corresponding positioning edge. The positioning edges accurately position the side plates, and then bolts are used to fix the two together to ensure consistent installation of the exhaust hood.

[0010] Multiple support tubes are provided, arranged at intervals around the inner cylinder. The support tubes serve as structural components to reinforce the inner and outer cylinders, and also ensure that the gas passes evenly around the motor stator head during discharge, preventing uneven airflow distribution that could lead to inconsistent circumferential temperature differences in the head during stator cooling.

[0011] Both the outer and inner cylinders are equipped with multiple air outlets, which are distributed at intervals along the circumference of the outer or inner cylinder. The air outlets on the outer cylinder and the air outlets on the inner cylinder correspond one-to-one. The support tube is installed between two corresponding air outlets, which can optimize airflow guidance and improve heat dissipation uniformity.

[0012] A support ring is installed on the clearance hole, and an air bearing is installed on the rotor shaft. The air bearing is equipped with a connecting ring. The support ring and the connecting ring are connected by screws. The air bearing is sleeved on the rotor shaft. During the operation of the motor, the air bearing and the rotor shaft do not contact each other. There is a very small gap between them, which can play a sealing role and ensure that all the airflow is used for effective cooling.

[0013] Ribs are installed on the wind deflector, with one end of the rib connected to the inner wall of the inner cylinder and the other end connected to the outer wall of the support ring. This enhances the structural strength of the wind deflector and resists rotor vibration.

[0014] Multiple ribs are provided, arranged at intervals around the support ring. This ensures balanced stress distribution and prevents the support ring from deforming due to uneven load.

[0015] The outer cylinder has bosses at both ends for connecting the motor, and the bosses extend outwards. The end of the outer cylinder near the baffle plate is connected to the air intake shell, and the other end of the outer cylinder is connected to the motor housing. Both the air intake shell and the motor housing have recesses that match the bosses, forming a concave-convex fit. This simplifies the overall assembly, ensures the coaxiality of the motor and the heat dissipation components, and reduces installation errors.

[0016] In summary, the beneficial effects of this utility model are as follows: This motor heat dissipation component overcomes the problem that the motor stator cannot effectively dissipate heat, especially in medium and high power motors, where the inability to remove large amounts of heat in time can easily lead to motor overheating, insulation aging, or even failure. This component enhances airflow through forced ventilation with a fan, significantly improving heat dissipation efficiency. It has a simple structure, requires no additional cooling medium or complex equipment, is easy to maintain, and reduces downtime and maintenance costs. Attached Figure Description

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

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a cross-sectional view of the support tube.

[0020] Figure 4 This is a schematic diagram of the mating structure between the heat dissipation components, the air intake casing, and the housing.

[0021] Figure 5 This is a schematic diagram of the cooling airflow path in the motor.

[0022] In the diagram: 1. Exhaust pipe; 2. Inner cylinder; 3. Outer cylinder; 4. Exhaust hood; 5. Support pipe; 6. Baffle plate; 7. Support ring; 8. Rib plate; 9. Air outlet; 10. Clearance hole; 11. Enclosure; 12. Side plate; 13. Positioning edge; 14. Boss; 15. Motor stator; 16. Motor rotor; 17. Inlet housing; 18. Fan impeller; 19. Housing; 20. Air bearing; 21. Connecting ring. Detailed Implementation

[0023] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0024] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0028] A motor heat dissipation component includes an outer cylinder 3, within which an inner cylinder 2 is disposed. The outer cylinder 3 and the inner cylinder 2 are spaced apart, forming a cooling channel for cooling airflow. A support pipe 5 is provided between the outer cylinder 3 and the inner cylinder 2 to fix them together. Both the outer cylinder 3 and the inner cylinder 2 have air outlets 9 communicating with the support pipe 5. A baffle plate 6 is installed on the front side of the inner cylinder 2, and the baffle plate 6 has clearance holes 10 for the rotor shaft to pass through. (See attached figure) Figure 1 This heat dissipation component is installed on the motor. By optimizing the path of the cooling airflow, the cooling airflow is used to cool the motor stator 15 and other heat-generating components. Compared with traditional blower heat dissipation components, the heat dissipation area is increased, so that both sides of the motor stator 15 have a better cooling effect, reducing the overall operating cost. It is suitable for heat dissipation of high-power motors.

[0029] See attached document Figure 4 An exhaust hood 4 is installed on the outer cylinder 3, and an exhaust pipe 1 is installed on the exhaust hood 4. The exhaust hood 4 is fitted onto the outer periphery of the outer cylinder 3. The exhaust hood 4 and the exhaust pipe 1 are combined to concentrate the exhaust of hot air and improve heat dissipation efficiency. The exhaust hood 4 includes a surrounding cylinder 11, which is fitted onto the outside of the outer cylinder 3. The surrounding cylinder 11 and the outer cylinder 3 are spaced apart from each other. Side plates 12 are provided on the left and right sides of the surrounding cylinder 11 to connect to the outer cylinder 3. The surrounding cylinder 11 and the outer cylinder 3 form a cavity, in which hot air from multiple support pipes 5 converges and is finally discharged outward through the exhaust pipe 1. Two positioning edges 13 are provided on the outer wall of the outer cylinder 3. The two positioning edges 13 are spaced apart from each other, and the two side plates 12 correspond one-to-one with the two positioning edges 13. The side plates 12 are abutted against the side of the corresponding positioning edge 13. The positioning edges 13 accurately position the side plates 12, and then bolts are used to fix the two together to ensure the consistent installation of the exhaust hood 4.

[0030] See attached document Figure 1 Multiple support pipes 5 are provided, and the multiple support pipes 5 are arranged at intervals around the inner cylinder 2. The support pipes 5 can not only serve as structural components to strengthen the inner cylinder 2 and the outer cylinder 3, but also allow the gas to pass evenly around the head of the motor stator 15 when it is discharged, so as to avoid the situation where the temperature difference around the head of the head is inconsistent due to uneven airflow distribution when the motor stator 15 is cooled by air.

[0031] See attached document Figure 5 Both the outer cylinder 3 and the inner cylinder 2 are provided with multiple air outlets 9, which are distributed at intervals along the circumference of the outer cylinder 3 or the inner cylinder 2. The air outlets 9 on the outer cylinder 3 and the air outlets 9 on the inner cylinder 2 correspond one-to-one. The support tube 5 is installed between two corresponding air outlets 9, which can optimize airflow guidance and improve heat dissipation uniformity. A support ring 7 is installed on the clearance hole 10, and an air bearing 20 is installed on the rotor shaft. The air bearing 20 is provided with a connecting ring 21. The support ring 7 and the connecting ring 21 are connected by screws. The air bearing 20 is sleeved on the rotor shaft. During the operation of the motor, the air bearing 20 does not contact the rotor shaft. The two have a very small gap, which can play a sealing role and ensure that all airflow is used for effective cooling.

[0032] See attached document Figure 1 Ribs 8 are installed on the wind baffle 6. One end of the rib 8 is connected to the inner wall of the inner cylinder 2, and the other end of the rib 8 is connected to the outer wall of the support ring 7. This enhances the structural strength of the wind baffle 6 and resists rotor vibration. Multiple ribs 8 are provided, and they are spaced around the support ring 7. This ensures balanced force distribution and prevents the support ring 7 from deforming due to uneven load.

[0033] See attached document Figure 4 The outer cylinder 3 has protrusions 14 at both ends for connecting the motor, and the protrusions 14 extend outward in a ring shape. The end of the outer cylinder 3 near the baffle plate 6 is connected to the air intake shell 17, and the other end of the outer cylinder 3 is connected to the motor housing 19. Both the air intake shell 17 and the housing 19 have recesses that match the protrusions 14, forming a concave-convex fit. They are then fixed together by bolts, which simplifies the overall assembly, ensures the coaxiality of the motor and the heat dissipation components, and reduces installation errors.

[0034] See attached document Figure 5The outer cylinder 3, located near the wind deflector 6, is connected to the air inlet shell 17, and the other end of the outer cylinder 3 is connected to the motor housing 19. When the motor is powered on, it generates a rotating magnetic field that drives the motor rotor 16 assembly to start rotating, which in turn drives the tail fan impeller 18 to rotate. The fan impeller 18 and the motor rotor 16 assembly are connected in a direct connection structure, without any additional energy loss. The fan impeller 18 is composed of multiple blades. When the motor starts, the fan impeller 18 rotates at high speed, and the cooling air is thrown into the air inlet shell 17 by centrifugal force. At this time, a negative pressure is formed in the middle of the fan impeller 18. Because the inlet is under negative pressure, the outside gas is immediately replenished under the action of atmospheric pressure. Under the continuous rotation of the fan impeller 18, the gas is continuously discharged and replenished, thus circulating.

[0035] See attached document Figure 5 When the motor is powered on, the main source of heat comes from the two ends of the stator 15. Cooling gas enters the housing 19 through the cooling channel, and some of the heat from the stator 15 is directly carried away by the cooling air. In addition to cooling the motor, this component can also cool the air suspension fan. When the air suspension fan is working, the high-speed operation of the motor rotor 16 assembly generates a buoyancy force, which keeps the rotor assembly in a suspended state. Operation is contactless and frictionless. At this time, a non-contact annular airflow channel is formed between the motor stator 15 and the motor rotor 16 assembly. The cooling channel is aligned with the outer periphery of the motor stator 15. The cooling airflow first cools the motor stator 15, and then, after reaching the other end of the housing 19, enters the annular airflow channel to cool the motor rotor 16 assembly. While carrying away the heat generated by the blower, the entering cooling gas has become hot. At this time, the heated airflow is in the inner cylinder 2, passes through the support pipe 5 into the exhaust hood 4, and is discharged outward through the exhaust pipe 1.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A heat dissipating member for an electric machine comprising an outer cylinder (3), characterized in that, The outer cylinder (3) is provided with an inner cylinder (2), the outer cylinder (3) and the inner cylinder (2) are spaced apart from each other, and a cooling channel for cooling airflow is formed between the outer cylinder (3) and the inner cylinder (2). A support pipe (5) is provided between the outer cylinder (3) and the inner cylinder (2) to fix the two together. Both the outer cylinder (3) and the inner cylinder (2) are provided with air outlets (9) that communicate with the support pipe (5). A baffle plate (6) is provided on the front side of the inner cylinder (2), and a clearance hole (10) is provided on the baffle plate (6) for the rotor shaft to pass through.

2. The motor heat dissipating member according to claim 1, wherein An exhaust hood (4) is installed on the outer cylinder (3), and an exhaust pipe (1) is installed on the exhaust hood (4). The exhaust hood (4) is fitted onto the outer periphery of the outer cylinder (3).

3. The motor heat dissipating member according to claim 2, wherein The exhaust hood (4) includes a surrounding tube (11), which is fitted on the outside of the outer tube (3). The surrounding tube (11) and the outer tube (3) are spaced apart from each other. Side plates (12) connecting the outer tube (3) are provided on the left and right sides of the surrounding tube (11).

4. The motor heat dissipating member according to claim 3, wherein The outer wall of the outer cylinder (3) is provided with two positioning edges (13), the two positioning edges (13) are spaced apart from each other, and the two side plates (12) correspond one-to-one with the two positioning edges (13), and the side plates (12) are attached to the side of the corresponding positioning edge (13).

5. The motor heat dissipating member according to claim 1, wherein The support tube (5) is provided in multiple ways, and the multiple support tubes (5) are arranged at intervals around the inner cylinder (2).

6. The motor heat dissipating member according to claim 5, wherein Both the outer cylinder (3) and the inner cylinder (2) are provided with multiple air outlets (9). The air outlets (9) are distributed at intervals along the circumference of the outer cylinder (3) or the inner cylinder (2). The air outlets (9) on the outer cylinder (3) and the air outlets (9) on the inner cylinder (2) correspond one to one. The support pipe (5) is installed between two corresponding air outlets (9).

7. The motor heat dissipation component as described in claim 1, characterized in that, A support ring (7) is installed on the clearance hole (10).

8. The motor heat dissipating member according to claim 7, wherein The wind deflector (6) is equipped with a rib (8), one end of which is connected to the inner wall of the inner cylinder (2), and the other end of which is connected to the outer wall of the support ring (7).

9. The motor heat dissipating member according to claim 8, wherein The ribs (8) are provided in multiples, and the multiple ribs (8) are arranged at intervals around the support ring (7).

10. The motor heat dissipating member according to claim 1, wherein The outer cylinder (3) has bosses (14) at both ends for connecting the motor, and the bosses (14) extend outward in a ring shape.

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