A self-heating motor

Abstract

This utility model discloses a self-cooling motor, including a housing, a rotor assembly, a stator assembly, and a fan located within the housing. The rotor assembly and the stator assembly rotate relative to each other, and the stator assembly is fixed within the housing. The fan is coaxially connected to the rotor assembly. The radial outer surface of the housing has multiple heat dissipation fins and air guide holes. The multiple heat dissipation fins are distributed circumferentially along the housing, and a heat dissipation channel is formed between adjacent heat dissipation fins. The air guide holes are located within the heat dissipation channels and are used to guide the fluid generated by the fan from the interior of the housing to the heat dissipation channels. This utility model can improve the heat dissipation efficiency inside the motor and also improve the heat dissipation efficiency on the outer surface of the motor.

Description

Technical Field

[0001] This utility model relates to the technical field of motors, and in particular to a self-cooling motor. Background Technology

[0002] As the core power component of modern industrial and civil equipment, the operational stability and service life of electric motors are directly related to the reliability of the entire system.

[0003] Studies have shown that internal temperature rise in motors accelerates the aging of winding insulation materials. Excessive temperature rise can also cause problems such as demagnetization of permanent magnets and increased winding resistance. In particular, some motors installed in spaces with poor air circulation will have even higher temperatures, resulting in a shorter motor lifespan.

[0004] Traditional motor cooling solutions mainly rely on passive heat conduction structures, which involve placing heat sinks on the surface of the motor casing. However, for some motors located in spaces with poor air circulation, it is still difficult to dissipate the heat quickly, resulting in poor cooling performance. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a self-cooling motor, which can improve the heat dissipation efficiency inside the motor and the heat dissipation efficiency on the outer surface of the motor.

[0006] A self-cooling motor according to an embodiment of the present invention includes a housing, a rotor assembly, a stator assembly, and a fan located within the housing. The rotor assembly and the stator assembly rotate relative to each other, the stator assembly is fixed within the housing, and the fan is coaxially connected to the rotor assembly. The radial outer surface of the housing has a plurality of heat dissipation fins and air guide holes. The plurality of heat dissipation fins are distributed circumferentially along the housing, and a heat dissipation channel is formed between two adjacent heat dissipation fins. The air guide holes are located in the heat dissipation channel and are used to guide the fluid generated by the fan from the interior of the housing to the heat dissipation channel.

[0007] A self-heating motor according to an embodiment of the present utility model has at least the following beneficial effects:

[0008] 1. By incorporating a fan, the rotor assembly can output rotational power under the relative rotation of the rotor assembly and stator assembly, and drive the fan to rotate. The fan rotates inside the housing to generate fluid, and uses the airflow to dissipate heat and cool the stator assembly and other structures, which helps to reduce the internal temperature of the motor.

[0009] 2. This utility model, by setting multiple heat dissipation fins and air guide holes, arranges multiple heat dissipation fins on the radial outer surface of the shell. The heat dissipation fins dissipate the heat of the shell, accelerating the conduction of heat inside the motor to the outside. Furthermore, the air guide holes actively guide the airflow generated by the fan to the heat dissipation channel. The airflow in the heat dissipation channel can accelerate the flow of heat in the heat dissipation fin area. In a space with poor air circulation, the motor can dissipate heat more quickly, thereby greatly improving the heat dissipation efficiency of the motor and reducing the energy consumption of the motor.

[0010] According to an embodiment of the present invention, a self-heating motor has an air guide hole with a tapered surface, the tapered surface being widened along the direction close to the interior of the outer casing.

[0011] According to an embodiment of the present invention, a self-heating motor is provided with an annular groove at the end of the housing, and the fan is located in the annular groove.

[0012] According to an embodiment of the present invention, a self-heating motor has an air guide hole that passes through the annular groove and extends along the axial direction of the annular groove.

[0013] According to an embodiment of the present invention, a self-heating motor is provided, wherein the heat dissipation fins extend along the length direction of the outer shell.

[0014] According to an embodiment of the present invention, a self-heating motor is provided, wherein the rotor assembly has a rotating shaft, the fan is mounted on the rotating shaft, and a connecting key for transmission and a keyway matching the connecting key are provided between the fan and the rotating shaft.

[0015] According to an embodiment of the present invention, a self-heating motor further includes two end caps, which are respectively installed at both ends of the housing. A bearing is sleeved on the radial outer surface of the rotating shaft, and the end caps are provided with mounting holes that match the bearings.

[0016] According to an embodiment of the present invention, in a self-cooling motor, one of the two end covers has a plurality of vent holes on the side of the end cover near the fan, the vent holes allowing external air to enter the interior of the housing.

[0017] According to an embodiment of the present invention, a self-heating motor is provided with a filter cover on the side of the end cover away from the outer shell, and the filter cover covers the air passage.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a self-heating motor according to an embodiment of the present utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the housing of a self-cooling motor is shown.

[0022] Figure 3 for Figure 1 A schematic diagram of the casing of a self-cooling motor from another perspective is shown.

[0023] Reference numerals: 100-House casing, 110-Rotor assembly, 120-Stator assembly, 130-Fan, 140-Heat sink fins, 150-Air duct, 160-Conical surface, 170-Annular groove, 180-Connecting key, 190-Keyway, 200-Bearing, 210-Ventilation hole, 220-Air filter cover, 230-Shaft, 240-Heat dissipation channel, 250-End cover. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] A self-cooling motor according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0029] Reference Figure 1 The present invention aims to provide an embodiment of a self-cooling motor.

[0030] A self-heating motor according to an embodiment of this utility model, referring to... Figure 1 , Figure 2 and Figure 3 The device includes a housing 100, a rotor assembly 110, a stator assembly 120, and a fan 130 located within the housing 100. The rotor assembly 110 and the stator assembly 120 rotate relative to each other. The stator assembly 120 is fixed inside the housing 100. The fan 130 is coaxially connected to the rotor assembly 110. The radial outer surface of the housing 100 has multiple heat dissipation fins 140 and air guide holes 150. The multiple heat dissipation fins 140 are distributed circumferentially along the housing 100. A heat dissipation channel 240 is formed between two adjacent heat dissipation fins 140. The air guide holes 150 are located in the heat dissipation channel 240 and are used to guide the fluid generated by the fan 130 from the inside of the housing 100 to the heat dissipation channel 240.

[0031] It is understood that by setting up a fan 130, under the relative rotation of the rotor assembly 110 and the stator assembly 120, the rotor assembly 110 can output rotational power and drive the fan 130 to rotate. The fan 130 rotates inside the housing 100 to generate fluid, and uses airflow to dissipate heat and cool the stator assembly 120 and other structures, which is beneficial to reducing the internal temperature of the motor.

[0032] Furthermore, by setting multiple heat dissipation fins 140 and air guide holes 150, the present invention arranges multiple heat dissipation fins 140 on the radial outer surface of the outer shell 100, and uses the heat dissipation fins 140 to dissipate the heat of the outer shell 100, accelerating the heat conduction from the inside of the motor to the outside. In addition, the air guide holes 150 actively guide the airflow generated by the fan 130 to the heat dissipation channel 240. There is airflow in the heat dissipation channel 240, which can accelerate the flow of heat in the area of ​​the heat dissipation fins 140. In the space with poor air circulation, the motor can dissipate heat faster, thereby greatly improving the heat dissipation efficiency of the motor and reducing the energy consumption of the motor.

[0033] In some embodiments of this utility model, the air guide hole 150 has a tapered surface 160, which is enlarged along the direction close to the interior of the outer shell 100. It can be understood that the flared structure of the air guide hole 150 can guide the diffused airflow generated by the fan 130 to concentrate into the air guide hole 150, making it easier for the airflow to enter the air guide hole 150.

[0034] In some embodiments of this utility model, an annular groove 170 is provided at the end of the housing 100, and the fan 130 is located in the annular groove 170. It can be understood that by using the annular groove 170 to accommodate the fan 130, the size of the fan 130 can be set to be larger, avoiding the overall size of the housing 100 being too large, and ensuring that the fan 130 can generate a large airflow.

[0035] In some embodiments of this utility model, reference is made to Figure 2 and Figure 3 The air guide hole 150 passes through the annular groove 170 and extends along the axial direction of the annular groove 170. It can be understood that after the fluid enters the heat dissipation channel 240 through the air guide hole 150, the airflow can flow along the length of the heat dissipation channel 240, which is beneficial to improving the heat dissipation in the heat dissipation channel 240.

[0036] In some embodiments of this utility model, reference is made to Figure 3 The heat dissipation fins 140 extend along the length of the outer casing 100. It can be understood that the longitudinally extending heat dissipation fins 140 are consistent with the length of the motor casing 100, maximizing the utilization of the surface area of ​​the casing 100, increasing the heat dissipation area, and improving the heat dissipation efficiency.

[0037] In some embodiments of this utility model, the rotor assembly 110 has a rotating shaft 230, and the fan 130 is fitted onto the rotating shaft 230. A connecting key 180 for transmission and a keyway 190 that matches the connecting key 180 are provided between the fan 130 and the rotating shaft 230. It can be understood that the key connection structure ensures the reliability of synchronous rotation between the fan 130 and the rotating shaft 230, and avoids the risk of loosening of traditional tight fit or threaded connection under high-speed rotation.

[0038] In some embodiments of this utility model, reference is made to Figure 1 It also includes two end caps 250, which are respectively installed at both ends of the housing 100. The radial outer surface of the rotating shaft 230 is fitted with a bearing 200. The end caps 250 are provided with mounting holes that match the bearings 200. It can be understood that the end caps 250 are provided with mounting holes for the bearings 200 so that the rotating shaft 230 is installed in the bearings 200, thereby reducing the friction between the end caps 250 and the rotating shaft 230, reducing friction loss caused by thermal deformation, and improving the stability of the motor's output rotational power.

[0039] In some embodiments of this utility model, one of the two end caps 250 is provided with a plurality of vent holes 210 on the side of the end cap 250 near the fan 130. The vent holes 210 allow external air to enter the interior of the housing 100. It can be understood that the vent holes 210 can balance the air pressure inside and outside the motor, and prevent the formation of a negative pressure zone inside the housing 100 when the fan 130 draws air, thus hindering air circulation and improving heat dissipation efficiency.

[0040] In some embodiments of this utility model, a filter hood 220 is provided on the side of the end cover 250 away from the outer shell 100. The filter hood 220 covers the air passage 210. It can be understood that the filter hood 220 blocks dust, oil mist and other pollutants from entering the motor.

[0041] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, 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.

[0042] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A self-heating motor, characterized in that, The device includes a housing (100), a rotor assembly (110), a stator assembly (120), and a fan (130) located within the housing (100). The rotor assembly (110) and the stator assembly (120) rotate relative to each other. The stator assembly (120) is fixed within the housing (100). The fan (130) is coaxially connected to the rotor assembly (110). The outer radial surface of the housing (100) has a plurality of heat dissipation fins (140) and air guide holes (150). The plurality of heat dissipation fins (140) are distributed circumferentially along the housing (100). A heat dissipation channel (240) is formed between two adjacent heat dissipation fins (140). The air guide holes (150) are located in the heat dissipation channel (240). The air guide holes (150) are used to guide the fluid generated by the fan (130) from the interior of the housing (100) to the heat dissipation channel (240).

2. The self-cooling motor according to claim 1, characterized in that, The air guide hole (150) has a tapered surface (160) which is widened in the direction close to the interior of the outer casing (100).

3. A self-heating motor according to claim 1, characterized in that, The end of the housing (100) is provided with an annular groove (170), and the fan (130) is located in the annular groove (170).

4. A self-cooling motor according to claim 3, characterized in that, The air guide hole (150) passes through the annular groove (170) and extends along the axial direction of the annular groove (170).

5. A self-cooling motor according to claim 1, characterized in that, The heat dissipation fins (140) extend along the length of the outer shell (100).

6. A self-heating motor according to claim 1, characterized in that, The rotor assembly (110) has a shaft (230), the fan (130) is mounted on the shaft (230), and a connecting key (180) for transmission and a keyway (190) matching the connecting key (180) are provided between the fan (130) and the shaft (230).

7. A self-cooling motor according to claim 6, characterized in that, It also includes two end caps (250), which are respectively installed at both ends of the housing (100). The radial outer surface of the rotating shaft (230) is fitted with a bearing (200), and the end caps (250) are provided with mounting holes that match the bearings (200).

8. A self-cooling motor according to claim 7, characterized in that, Of the two end caps (250), one end cap (250) has a plurality of vent holes (210) on the side near the fan (130), the vent holes (210) allowing external air to enter the interior of the housing (100).

9. A self-cooling motor according to claim 8, characterized in that, An air filter hood (220) is provided on the side of the end cap (250) away from the outer shell (100), and the air filter hood (220) covers the air passage (210).

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