A new type of cover pole motor with heat dissipation structure

Abstract

The utility model discloses a novel cover extreme motor of heat dissipation structure, it includes casing, rotor subassembly, heat conduction plate and fin group. The heat conduction plate inside is equipped with strip -shaped recess and heat conduction hole, and the outside is equipped with graphene coating, and the fin is fixed in heat conduction plate through welding and has wavy texture, and the casing outer wall sets up the raised rib and the vent. The application can pass through heat conduction plate and fin group fast conduction heat, and the heat dissipation efficiency is promoted with the help of graphene coating and wavy texture, and the raised rib and the vent are utilized to optimize heat distribution and air circulation. The utility model reduces motor temperature rise significantly, prolongs the life, and simple structure and low cost are convenient for using widely.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a shaded-pole motor with a novel heat dissipation structure. Background Technology

[0002] Currently, shaded-pole motors are widely used in small household appliances and industrial equipment due to their simple structure and low cost. However, during long-term operation, heat accumulation inside the motor becomes a significant problem. Traditional cooling methods mainly rely on natural heat dissipation from the casing or the addition of external fans for auxiliary cooling. Limited by the design characteristics of shaded-pole motors, their heat dissipation efficiency often fails to meet the demands of high-load operation, especially in confined spaces or high-temperature environments, where heat is difficult to dissipate quickly, leading to accelerated motor temperature rise. This not only affects the motor's performance but may also shorten its lifespan. Therefore, effectively improving the heat dissipation capacity of shaded-pole motors has become an urgent technical problem to be solved. Utility Model Content

[0003] The purpose of this utility model is to provide a new type of shaded-pole motor with a heat dissipation structure, which solves the problems mentioned in the background art.

[0004] This utility model is implemented as follows: a novel shaded-pole motor with a heat dissipation structure. The shaded-pole motor mainly consists of: a housing, a rotor assembly disposed inside the housing, a heat-conducting plate fixed to the outside of the housing, and a heat sink assembly mounted on the heat-conducting plate. The housing is the main structure, and the rotor assembly and the heat-conducting plate are respectively fixed to the housing by mechanical connection. The heat-conducting plate and the heat sink assembly are connected by bolts to form an integral structure.

[0005] A further technical solution of this utility model is: the inner surface of the heat-conducting plate is provided with a number of strip grooves, the strip grooves are evenly distributed along the length direction of the heat-conducting plate, and each strip groove has a heat-conducting hole at the bottom that extends to the inner wall of the shell. The heat-conducting hole is used to conduct the heat inside the shell to the heat-conducting plate.

[0006] A further technical solution of this utility model is: the heat sink assembly includes multiple parallel heat sinks, the root of each heat sink is embedded in the outer surface of the heat-conducting plate and fixed by welding, and the spacing between the heat sinks is 5mm to 10mm to ensure air circulation while maximizing the heat dissipation area.

[0007] A further technical solution of this utility model is: the outer wall of the shell is provided with a number of raised ribs, the raised ribs are evenly distributed along the circumference of the shell, and the top of each raised rib is in contact with the inner surface of the heat-conducting plate, so that the heat inside the shell is transferred to the heat-conducting plate through the raised ribs.

[0008] A further technical solution of this utility model is: the outer surface of the heat-conducting plate is also provided with a graphene coating, which covers the connection area between the heat-conducting plate and the heat sink, and is used to enhance the heat conduction efficiency between the heat-conducting plate and the heat sink.

[0009] A further technical solution of this utility model is: a vent is provided at the bottom of the housing, the position of the vent corresponds to the stator winding inside the housing, and a filter screen is installed on the inner side of the vent. The filter screen is used to block external dust from entering the housing while allowing air circulation.

[0010] A further technical solution of this utility model is: the outer end face of the heat sink is provided with a wave-shaped texture, the wave-shaped texture extends along the length direction of the heat sink, and the height difference between the peak and trough of the wave-shaped texture is 2mm to 3mm, which is used to increase the contact area between the heat sink and the air and enhance the turbulence effect.

[0011] A further technical solution of this utility model is: the heat-conducting plate has mounting ears on both sides of its edge, and the mounting ears have threaded holes for fixing the heat-conducting plate to the outer wall of the shell with bolts. The thickness of the mounting ears is 1.5 times the thickness of the heat-conducting plate to enhance the strength of the mounting ears.

[0012] The beneficial effects of this utility model are as follows: This novel shaded-pole motor with a heat dissipation structure adds a heat-conducting plate and a heat sink assembly to the outside of the housing. The heat-conducting plate utilizes strip-shaped grooves and heat-conducting holes to rapidly conduct heat from inside the housing to the heat sink assembly. Simultaneously, the raised ribs on the outer wall of the housing further enhance heat transfer efficiency. Furthermore, the application of a graphene coating significantly enhances the thermal conductivity between the heat-conducting plate and the heat sink, while the wavy texture on the outer end face of the heat sink effectively increases the air contact area, improving heat dissipation. Through this structural design, the heat dissipation capacity of the shaded-pole motor is significantly improved under high-load operation or in enclosed environments, thereby effectively reducing motor temperature rise and extending its service life. At the same time, it maintains the characteristics of simple structure and low cost, facilitating large-scale promotion and use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a bottom view of the present invention;

[0015] Figure 3 This is a partially enlarged view of the present invention.

[0016] The attached figures are labeled as follows: 1. Housing; 2. Rotor assembly; 3. Heat-conducting plate; 4. Heat sink assembly; 5. Strip groove; 6. Heat-conducting hole; 7. Raised rib; 8. Graphene coating; 9. Vent; 10. Wavy texture; 11. Mounting ear; 12. Threaded hole. Detailed Implementation

[0017] The specific implementation of a shaded-pole motor with a novel heat dissipation structure according to this utility model is described in detail with reference to the accompanying drawings. For example... Figure 1 As shown, the overall structure includes a housing 1, a rotor assembly 2, a heat-conducting plate 3, and a heat sink assembly 4. The housing 1 is the main structure, and the rotor assembly 2 is mechanically fixed inside it. Several raised ribs 7 are provided on the outer wall of the housing 1, evenly distributed along the circumference of the housing 1, with their tops contacting the inner surface of the heat-conducting plate 3. The heat-conducting plate 3 is bolted to the outer wall of the housing 1 through threaded holes 12 on mounting ears 11. The thickness of the mounting ears 11 is 1.5 times the thickness of the heat-conducting plate 3 to ensure strength. The outer surface of the heat-conducting plate 3 is coated with graphene 8 and the heat sink assembly 4 is welded and fixed thereon.

[0018] The inner surface of the heat-conducting plate 3 is provided with several strip-shaped grooves 5, which are evenly distributed along the length of the heat-conducting plate 3. Each strip-shaped groove 5 has a heat-conducting hole 6 at its bottom that extends to the inner wall of the housing 1. For example... Figure 2 As shown, the heat sink assembly 4 consists of multiple parallel heat sinks. The root of each heat sink is embedded in the outer surface of the heat-conducting plate 3 and fixed by welding. The spacing between the heat sinks is 5mm to 10mm. The outer end face of the heat sink is provided with a wavy texture 10, which extends along the length of the heat sink, and the height difference between the crest and trough is 2mm to 3mm.

[0019] A vent 9 is provided at the bottom of the housing 1. The position of the vent 9 corresponds to the stator winding inside the housing 1, and a filter screen is installed on its inner side. The vent 9 allows airflow while preventing external dust from entering the housing 1. Figure 3 As shown, the raised ribs 7 on the outer wall of the shell 1 are evenly distributed circumferentially and their tops are in contact with the inner surface of the heat-conducting plate 3. The raised ribs 7 transfer the heat inside the shell 1 to the heat-conducting plate 3. The inner surface of the heat-conducting plate 3 conducts the heat inside the shell 1 to the heat-conducting plate 3 through the strip grooves 5 and the heat-conducting holes 6. The outer surface of the heat-conducting plate 3 is coated with graphene 8 to enhance the heat conduction efficiency between it and the heat sink assembly 4.

[0020] During actual operation, the heat generated by the shaded-pole motor is first transferred through the inner wall of the housing 1 to the heat conduction holes 6, which then conduct the heat to the grooved area 5 of the heat conduction plate 3. After absorbing the heat, the heat conduction plate 3 quickly transfers the heat to the heat sink assembly 4 through the graphene coating 8 on its outer surface. The heat sinks of the heat sink assembly 4 maintain a spacing of 5mm to 10mm to ensure smooth airflow. At the same time, the wavy texture 10 on the outer end face of the heat sink increases the contact area between the heat sink and the air and enhances the turbulence effect, thereby improving the heat dissipation effect. The raised ribs 7 on the outer wall of the housing 1 further assist in transferring the heat inside the housing 1 to the heat conduction plate 3, forming multiple heat conduction paths.

[0021] When the shaded-pole motor is operating under high load or in a closed environment, the vent 9 at the bottom of the housing 1 allows external air to enter and, in conjunction with the filter, prevents dust from entering the interior of the housing 1. After the air passes through the vent 9 and comes into contact with the stator windings inside the housing 1, it carries away some heat and transfers the heat through the inner wall of the housing 1, the heat conduction holes 6, and the raised ribs 7 to the heat conduction plate 3 and the heat sink assembly 4. The mounting ears 11 on both sides of the heat conduction plate 3 are fixed to the outer wall of the housing 1 with bolts through the threaded holes 12. The thickness of the mounting ears 11 is designed to be 1.5 times the thickness of the heat conduction plate 3 to enhance its strength and thus ensure a stable connection between the heat conduction plate 3 and the housing 1.

[0022] Through the above structural design, the heat from the shaded-pole motor is transferred from the inside of the housing 1 to the heat-conducting plate 3 and finally dissipated to the external environment through the heat sink assembly 4. The strip grooves 5 and heat-conducting holes 6 on the heat-conducting plate 3 form an efficient heat conduction path, and the raised ribs 7 on the outer wall of the housing 1 further improve the heat transfer efficiency. The graphene coating 8 significantly enhances the heat conduction capability between the heat-conducting plate 3 and the heat sink assembly 4, while the wavy texture 10 on the outer end face of the heat sink effectively increases the air contact area and enhances the turbulence effect. The vents 9 at the bottom of the housing 1, in conjunction with the filter, allow airflow while preventing dust from entering the interior of the housing 1, ensuring that the shaded-pole motor can maintain stable heat dissipation performance under high load operation or in a closed environment.

[0023] To enable those skilled in the art to fully understand and implement this utility model, the specific implementation principles of this utility model are further explained below in conjunction with specific application scenarios.

[0024] In practical applications, shaded-pole motors are commonly used as drive components in small household appliances such as fans or industrial equipment. When the motor runs for extended periods, electromagnetic losses between the internal rotor assembly 2 and the stator windings generate a significant amount of heat. If this heat cannot be dissipated in time, the motor's temperature will rise excessively, affecting its performance and lifespan. To address this problem, this invention designs an efficient heat dissipation structure and achieves its function through the following steps.

[0025] First, when the shaded-pole motor starts running, the heat inside the housing 1 is mainly concentrated near the stator windings and rotor assembly 2. This heat is transferred through the inner wall of the housing 1 to the heat conduction holes 6. The heat conduction holes 6 act as direct channels for heat conduction, guiding the heat inside the housing 1 to the strip-shaped groove 5 area of ​​the heat conduction plate 3. The design of the strip-shaped groove 5 not only increases the contact area between the heat conduction plate 3 and the inner wall of the housing 1, but also optimizes the heat distribution through its special geometry, thereby improving heat conduction efficiency. Simultaneously, the raised ribs 7 on the outer wall of the housing 1 further assist in transferring the heat inside the housing 1 to the inner surface of the heat conduction plate 3, forming multiple heat conduction paths. This design effectively avoids localized heat accumulation inside the housing 1, ensuring that heat can be evenly transferred to the heat conduction plate 3.

[0026] Secondly, after absorbing heat, the heat-conducting plate 3 rapidly transfers the heat to the heat sink assembly 4 through the graphene coating 8 on its outer surface. The graphene coating 8 has excellent thermal conductivity, enabling it to conduct heat from the heat-conducting plate 3 to the root of the heat sink assembly 4 in a short time. The heat sink assembly 4 consists of multiple parallel heat sinks, each with its root embedded in the heat-conducting plate 3 and fixed by welding, ensuring a tight connection between the heat sink and the heat-conducting plate 3. The spacing between the heat sinks is designed to be 5mm to 10mm, which ensures smooth airflow while maximizing the surface area of ​​the heat sinks, thereby improving the heat dissipation effect. In addition, the wavy texture 10 on the outer end face of the heat sink extends along the length of the heat sink, with a height difference of 2mm to 3mm between the crests and troughs. This wavy texture 10 not only increases the contact area between the heat sink and the air but also enhances the turbulence effect by changing the direction and speed of airflow, thereby further enhancing the heat dissipation capacity.

[0027] In high-load operation or enclosed environments, the vent 9 at the bottom of the housing 1 plays a crucial role. External air enters the housing 1 through the vent 9 and carries away some heat after contacting the stator windings. The position of the vent 9 corresponds to the stator windings inside the housing 1, ensuring that air can directly act on areas with concentrated heat. Simultaneously, the filter installed inside the vent 9 effectively prevents external dust from entering the housing 1, avoiding dust accumulation that could affect motor performance. After passing through the vent 9, some heat is transferred to the inner wall of the housing 1, the heat-conducting holes 6, and the raised ribs 7, and finally dissipated to the external environment through the heat-conducting plate 3 and the heat sink assembly 4. This design achieves a closed-loop heat exchange between the inside and outside, ensuring stable operation of the shaded-pole motor in high-temperature or enclosed environments.

[0028] Furthermore, the mounting ears 11 on both sides of the heat-conducting plate 3 are fixed to the outer wall of the housing 1 by bolts through threaded holes 12. The thickness of the mounting ears 11 is designed to be 1.5 times the thickness of the heat-conducting plate 3 to enhance its strength and ensure a stable connection between the heat-conducting plate 3 and the housing 1. This mechanical connection method not only simplifies the assembly process but also improves the reliability of the overall structure, preventing the heat-conducting plate 3 from loosening or falling off due to vibration or external impact.

[0029] Through the above steps and structural design, the heat from the shaded-pole motor is transferred from the inside of the housing 1 to the heat-conducting plate 3 via multiple paths, and finally dissipated to the external environment through the heat sink assembly 4. The strip grooves 5 and heat-conducting holes 6 on the heat-conducting plate 3 form an efficient heat conduction path, and the raised ribs 7 on the outer wall of the housing 1 further improve the heat transfer efficiency. The graphene coating 8 significantly enhances the heat conduction capability between the heat-conducting plate 3 and the heat sink assembly 4, while the wavy texture 10 on the outer end face of the heat sink effectively increases the air contact area and enhances the turbulence effect. The vents 9 at the bottom of the housing 1, in conjunction with the filter, allow airflow while preventing dust from entering the interior of the housing 1, ensuring that the shaded-pole motor can maintain stable heat dissipation performance under high load operation or in a closed environment.

[0030] In summary, this utility model, through reasonable structural design and material selection, solves the problem of heat accumulation in shaded-pole motors during long-term operation, significantly improves heat dissipation efficiency, extends the service life of the motor, and maintains the characteristics of simple structure and low cost, making it easy to promote and use on a large scale.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel shaded-pole motor with a heat dissipation structure, characterized in that, The shaded-pole motor mainly consists of a housing (1), a rotor assembly (2) disposed inside the housing (1), a heat-conducting plate (3) fixed to the outside of the housing (1), and a heat sink assembly (4) mounted on the heat-conducting plate (3). The heat-conducting plate (3) is fixed to the housing (1) by mechanical connection, and the heat sink assembly (4) and the heat-conducting plate (3) are connected by bolts to form an integral structure.

2. The shaded-pole motor with a novel heat dissipation structure according to claim 1, characterized in that, The inner surface of the heat-conducting plate (3) is provided with several strip grooves (5). The strip grooves (5) are evenly distributed along the length of the heat-conducting plate (3). Each strip groove (5) has a heat-conducting hole (6) at its bottom that extends to the inner wall of the shell (1).

3. The shaded-pole motor with a novel heat dissipation structure according to claim 1, characterized in that, The heat sink assembly (4) includes multiple parallel heat sinks, the root of each heat sink is embedded in the outer surface of the heat-conducting plate (3) and fixed by welding, and the spacing between the heat sinks is 5 mm to 10 mm.

4. The shaded-pole motor with a novel heat dissipation structure according to claim 1, characterized in that, The outer wall of the shell (1) is provided with a number of raised ribs (7), which are evenly distributed along the circumference of the shell (1). The top of each raised rib (7) is in contact with the inner surface of the heat-conducting plate (3).

5. A shaded-pole motor with a novel heat dissipation structure according to claim 1, characterized in that, The outer surface of the heat-conducting plate (3) is provided with a graphene coating (8), which covers the connection area between the heat-conducting plate (3) and the heat sink assembly (4).

6. A shaded-pole motor with a novel heat dissipation structure according to claim 1, characterized in that, The bottom of the housing (1) is provided with a vent (9), the position of which corresponds to the stator winding inside the housing (1), and a filter screen is installed on the inner side of the vent (9).

7. A shaded-pole motor with a novel heat dissipation structure according to claim 3, characterized in that, The outer end face of the heat sink is provided with a wave-shaped texture (10), which extends along the length of the heat sink, and the height difference between the peaks and troughs is 2 mm to 3 mm.

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