Explosion-proof motor with adaptive heat dissipation structure
By designing a composite heat dissipation structure in the explosion-proof motor, and utilizing the high-speed airflow generated by rotation and the fan to assist in heat dissipation, the problem of insufficient heat dissipation in traditional explosion-proof motors is solved, achieving efficient heat dissipation and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional explosion-proof motors have insufficient heat dissipation performance in flammable and explosive environments, especially under heavy-load conditions, and existing cooling measures are prone to clogging or increase maintenance difficulty.
It adopts a composite heat dissipation structure consisting of stator coils, rotor, rotating shaft, heat sink fins and fan. It dissipates heat by generating high-speed airflow through rotation, and combined with fan to assist in heat dissipation, it forms a multi-layer heat dissipation system.
It enables explosion-proof motors to dissipate heat efficiently in explosive environments, avoids heat accumulation, reduces insulation aging and explosion risks, and adapts to various working conditions.
Smart Images
Figure CN224138859U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of motor technology, and in particular to an explosion-proof motor with an adaptive heat dissipation structure. Background Technology
[0002] As core power equipment in flammable and explosive environments such as petrochemicals and natural gas extraction, the synergistic optimization of heat dissipation performance and explosion-proof safety has always been a key technological challenge for explosion-proof motors. Traditional explosion-proof motors, due to their fully enclosed structure to prevent electrical spark leakage, suffer from severe internal heat accumulation. Excessive temperature rise can lead to insulation aging, permanent magnet demagnetization, and even explosion risks. For example, ordinary enclosed explosion-proof motors relying solely on natural cooling have limited heat dissipation efficiency, requiring additional cooling measures under high-temperature and high-humidity conditions.
[0003] However, existing technologies still have limitations: natural cooling cannot meet the demands of heavy-duty operating conditions, water-cooling systems increase maintenance difficulty, and traditional air-cooling designs are prone to clogging in dusty environments. Therefore, there is an urgent need to develop composite heat dissipation structures with environmental adaptability. Utility Model Content
[0004] This application provides an explosion-proof motor with an adaptive heat dissipation structure to solve the problems of motors.
[0005] This application provides an explosion-proof motor with an adaptive heat dissipation structure, including an explosion-proof housing, and further comprising:
[0006] A stator coil is disposed within the inner cavity of an explosion-proof enclosure. The stator coil has a circular cross-section. A rotor is inserted into the inner cavity of the stator coil. Multiple evenly distributed positioning grooves are formed on the outer circumference of the stator coil. Positioning posts are fixed within the positioning grooves, and the outer walls of the positioning posts are fixed to the inner wall of the explosion-proof enclosure. A rotating shaft is coaxially mounted inside the rotor. A cover end and a bearing outer cover are respectively fixed to the left and right sides of the explosion-proof enclosure by bolts. A bearing inner cover is provided on the inner side of both the cover end and the bearing outer cover. A bearing is fixedly installed inside the bearing inner cover. The two ends of the rotating shaft are coaxially connected to two bearings respectively.
[0007] Two sets of primary heat dissipation components are symmetrically arranged on the left and right sides of the rotor and are used to dissipate the heat generated by the rotor during rotation.
[0008] A secondary heat dissipation component is disposed on the outside of the bearing outer cover and is used to assist in heat dissipation of the inner cavity of the explosion-proof housing;
[0009] The explosion-proof housing is symmetrically provided with feet at its bottom, and the feet are integrally formed with the explosion-proof housing.
[0010] Preferably, the inner circumferential wall of the explosion-proof housing is provided with a plurality of heat dissipation grooves that are distributed at equal intervals around the circumference.
[0011] Preferably, the primary heat dissipation component includes:
[0012] Multiple heat dissipation fins are distributed at equal intervals around the circumference. The heat dissipation fins are fixedly installed on the side wall of the rotor, and the cross-section of the heat dissipation fins is a right trapezoidal structure.
[0013] Preferably, the secondary heat dissipation component includes:
[0014] A fan is fitted onto one end of a rotating shaft near the bearing cover, and the fan is fixedly connected to the rotating shaft. A limiting groove is provided on the rotating shaft near the outer edge of the fan, and a retaining ring is fitted into the limiting groove.
[0015] Preferably, an end cover is provided on the periphery of the bearing outer cover, the end cover is fixed to the bearing outer cover by bolts, and the side wall of the end cover has a plurality of heat dissipation holes evenly distributed.
[0016] Preferably, a junction box is fixed to the side wall of the explosion-proof enclosure by bolts.
[0017] Preferably, a threaded hole is provided at the middle position of the upper surface of the explosion-proof housing, and a lifting ring is threaded into the threaded hole.
[0018] The beneficial effects of this utility model are:
[0019] This explosion-proof motor with an adaptive heat dissipation structure has both primary and secondary heat dissipation components that rotate synchronously with the rotating shaft during heat dissipation. During the rotation, a high-speed airflow is generated, which quickly eliminates the heat generated between the stator coil and the rotor during rotation, thus solving the problem of poor heat dissipation in existing explosion-proof motors.
[0020] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1This is a schematic diagram of the overall structure of this utility model.
[0023] Figure 2 This is a schematic diagram of the end cover of this utility model.
[0024] Figure 3 This is a schematic diagram of the structure of the cover end and the bearing outer cover of this utility model.
[0025] Figure 4 This is a cross-sectional view of the explosion-proof housing of this utility model.
[0026] Figure 5 This is a schematic diagram of the stator coil and rotor of this utility model.
[0027] Explanation of reference numerals in the attached figures:
[0028] 1. Explosion-proof housing; 2. Stator coil; 3. Rotor; 4. Positioning groove; 5. Positioning post; 6. Heat dissipation groove; 7. Heat dissipation fins; 8. Rotating shaft; 9. Bearing; 10. Cover end; 11. Inner bearing cover; 12. Outer bearing cover; 13. Fan; 14. Limiting groove; 15. Retaining ring; 16. End cover; 17. Heat dissipation hole; 18. Junction box; 19. Threaded hole; 20. Lifting ring; 21. Foot. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.
[0031] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0032] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are used 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.
[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection. A physical connection can be a fixed connection, such as a connection secured by fasteners, such as a connection secured by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
[0035] This utility model provides, for example Figure 1-5 The explosion-proof motor shown includes an explosion-proof housing 1, and further includes:
[0036] Stator coil 2 is located inside the explosion-proof housing 1. The stator coil 2 has a circular cross-section. A rotor 3 is installed inside the stator coil 2. Multiple evenly distributed positioning grooves 4 are opened on the outer circumference of the stator coil 2. Positioning posts 5 are fixed in the positioning grooves 4. The outer side of the positioning posts 5 is fixed to the inner wall of the explosion-proof housing 1. A rotating shaft 8 is coaxially installed inside the rotor 3. A cover end 10 and a bearing outer cover 12 are fixedly installed on the left and right sides of the explosion-proof housing 1 by bolts. A bearing inner cover 11 is provided on the inner side of both the cover end 10 and the bearing outer cover 12. A bearing 9 is fixedly installed inside the bearing inner cover 11. The two ends of the rotating shaft 8 are coaxially connected to the two bearings 9 respectively.
[0037] Two sets of primary heat dissipation components are symmetrically arranged on the left and right sides of the rotor 3, and are used to dissipate the heat generated by the rotor 3 during rotation.
[0038] A secondary heat dissipation component is installed on the outside of the bearing outer cover 12 and is used to assist in heat dissipation of the inner cavity of the explosion-proof housing 1.
[0039] The bottom of the explosion-proof housing 1 is symmetrically provided with feet 21, and the feet 21 are integrally formed with the explosion-proof housing 1.
[0040] The motor is a detachable structure, and the components are fixed together by bolts. The foot 21 is provided with positioning and fixing holes to fix the device to the external environment.
[0041] The explosion-proof housing 1 has multiple heat dissipation grooves 6 that are evenly distributed in a circle on its inner circumference.
[0042] When the rotor 3 rotates inside the stator coil 2, the heat generated by the resistance can enter both sides of the stator coil 2 through multiple heat dissipation slots 6, thus preventing heat accumulation inside the stator coil 2.
[0043] The primary heat dissipation components include:
[0044] Multiple heat dissipation fins 7 are distributed at equal intervals around the circumference. The heat dissipation fins 7 are fixedly installed on the side wall of the rotor 3. The cross-section of the heat dissipation fins 7 is a right trapezoidal structure.
[0045] When the rotor 3 rotates at high speed, multiple heat dissipation fins 7 located on both sides of the rotor 3 also rotate, forming a fan-like structure, which helps to quickly dissipate the heat accumulated in the heat dissipation slot 6.
[0046] The secondary heat dissipation components include:
[0047] Fan 13 is sleeved on one end of rotating shaft 8 near bearing cover 12, and fan 13 is fixedly connected to rotating shaft 8. A limiting groove 14 is opened on the outer edge of rotating shaft 8 near fan 13, and a retaining ring 15 is sleeved in the limiting groove 14.
[0048] When the rotating shaft 8 rotates, it drives the fan 13 to rotate, thereby creating negative pressure and quickly dissipating the heat inside the explosion-proof housing 1 to the outside.
[0049] An end cover 16 is provided on the periphery of the bearing outer cover 12. The end cover 16 is fixed to the bearing outer cover 12 by bolts. Multiple heat dissipation holes 17 are evenly distributed on the side wall of the end cover 16.
[0050] The end cover 16 can effectively protect the fan 13, while the heat is discharged to the outside through the heat dissipation hole 17.
[0051] A junction box 18 is fixed to the side wall of the explosion-proof enclosure 1 by bolts.
[0052] The junction box 18 contains an electrical control panel, which is fixed in place by bolts.
[0053] A threaded hole 19 is provided at the middle of the upper surface of the explosion-proof housing 1, and a lifting ring 20 is connected to the threaded hole 19 by internal thread.
[0054] The lifting ring 20 has a circular ring structure, and the circumferential wall of the column at the bottom is threaded. When it is necessary to move the device, it can be hung in the ring of the lifting ring 20 by a lifting tool, thereby lifting the motor.
[0055] Working principle: During installation, first insert the rotor 3 into the inner cavity of the explosion-proof housing 1. During installation, the positioning groove 4 and multiple positioning pins 5 need to be aligned and matched. Then, use a rubber tool hammer to hammer the stator coil 2 into the inner cavity of the explosion-proof housing 1. The positioning groove 4 and positioning pins 5 are installed using interference fit technology. In addition, the rotating shaft 8 and the rotor 3 are also matched and installed using interference fit. Then, align the cover end 10 and the bearing inner cover 11 on the bearing outer cover 12 with the two bearings 9 and merge them inward. Then, fix the cover end 10, the bearing outer cover 12 and the explosion-proof housing 1 with bolts. Then, install the fan 13 and the end cover 16 in sequence.
[0056] During heat dissipation, both the primary and secondary heat dissipation components rotate synchronously with the rotating shaft 8, generating high-speed airflow during rotation to quickly eliminate the heat generated between the stator coil 2 and the rotor 3 during rotation.
[0057] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. An explosion-proof motor having an adaptive heat dissipation structure, comprising an explosion-proof housing (1), characterized in that: Also includes: Stator coil (2), the stator coil (2) is set in the inner cavity of the explosion-proof shell (1), the cross-section of the stator coil (2) is in the shape of a ring, the inner cavity of the stator coil (2) is inserted and installed with a rotor (3), the outer circumference of the stator coil (2) is provided with a plurality of evenly distributed positioning grooves (4), the positioning grooves (4) are fixed with positioning columns (5), and the outer side wall of the positioning columns (5) is fixed with the inner wall of the explosion-proof shell (1), the rotor (3) is coaxially installed with a rotating shaft (8), the left and right sides of the explosion-proof shell (1) are respectively fixed with a cover end (10) and a bearing outer cover (12) by bolts, and the inner side of the cover end (10) and the bearing outer cover (12) are both provided with a bearing inner cover (11), the bearing inner cover (11) is fixedly installed with a bearing (9), and the two ends of the rotating shaft (8) are coaxially connected with the two bearings (9) respectively. Two sets of primary heat dissipation components are symmetrically arranged on the left and right sides of the rotor (3) and are used to dissipate the heat generated by the rotor (3) during rotation. A secondary heat dissipation assembly is disposed on the outside of the bearing outer cover (12) and is used to assist in heat dissipation of the inner cavity of the explosion-proof housing (1); The bottom of the explosion-proof housing (1) is symmetrically provided with feet (21), and the feet (21) and the explosion-proof housing (1) are integrally formed.
2. The explosion-proof motor with adaptive heat dissipation structure according to claim 1, characterized in that: The explosion-proof housing (1) has multiple heat dissipation grooves (6) that are evenly distributed in a circular pattern on its inner circumference.
3. The explosion-proof motor with adaptive heat dissipation structure according to claim 1, characterized in that: The primary heat dissipation component includes: Multiple heat dissipation fins (7) are distributed at equal intervals around the circumference. The heat dissipation fins (7) are fixedly installed on the side wall of the rotor (3). The cross-section of the heat dissipation fins (7) is a right trapezoidal structure.
4. The explosion-proof motor with adaptive heat dissipation structure according to claim 1, characterized in that: The secondary heat dissipation components include: The fan (13) is sleeved on one end of the rotating shaft (8) near the bearing cover (12), and the fan (13) is fixedly connected to the rotating shaft (8). A limiting groove (14) is opened on the rotating shaft (8) near the outer edge of the fan (13), and a retaining ring (15) is sleeved in the limiting groove (14).
5. The explosion-proof motor with adaptive heat dissipation structure according to claim 4, characterized in that: The bearing outer cover (12) is provided with an end cover (16) on its periphery. The end cover (16) is fixed to the bearing outer cover (12) by bolts. The side wall of the end cover (16) is provided with a plurality of heat dissipation holes (17) that are evenly distributed.
6. The explosion-proof motor with adaptive heat dissipation structure according to claim 1, characterized in that: The side wall of the explosion-proof enclosure (1) is fixed with a junction box (18) by bolts.
7. An explosion-proof motor with an adaptive heat dissipation structure according to claim 1, characterized in that: A threaded hole (19) is provided at the middle position of the upper surface of the explosion-proof housing (1), and a lifting ring (20) is threaded into the threaded hole (19).