Driving motor for cooling fan of air-air cooler

Abstract

The utility model discloses a driving motor for a cooling fan of an air-air cooler, two ends of a motor sleeve shell are respectively and fixedly connected with a front end cover and a rear end cover, the inner wall of the motor sleeve shell is fixedly provided with a stator assembly, the stator assembly is internally and rotatably connected with a rotor assembly, the middle part of the rotor assembly is fixedly connected with a motor rotating shaft, and the motor rotating shaft is fixedly connected with the motor sleeve shell. One end of the motor rotating shaft extends out of the motor sleeve shell from the front rotating shaft supporting assembly and then is connected with a rotating shaft of the cooling fan, the other end of the motor rotating shaft penetrates out of the motor sleeve shell from the rear rotating shaft supporting assembly and then is connected with the fan, and a fan cover is fixedly connected to the portion, on one side of the fan, of the motor sleeve shell. And the fan is rotationally connected in the fan cover. The utility model aims to provide the fan driving motor which is remarkably improved in the aspects of heat dissipation, structural stability, maintenance convenience, energy efficiency level and the like.

Description

Technical Field

[0001] This utility model relates to the field of motor equipment technology, specifically to a cooling fan drive motor for an air cooler. Background Technology

[0002] In modern industrial and civilian applications, air-to-air heat exchangers are widely used in the heat dissipation systems of various equipment, especially in applications requiring efficient heat dissipation such as automobiles, aviation, and electronic equipment. Air-to-air heat exchangers utilize air convection to cool the working medium, and their efficient operation depends on the performance of the cooling fan drive motor.

[0003] Traditional cooling fan drive motors have the following problems in design and use:

[0004] 1. Insufficient heat dissipation: Traditional motors are prone to overheating when operating under high loads, leading to decreased efficiency or even damage, which affects the performance of the entire cooling system.

[0005] 2. Poor structural stability: Some motors are prone to vibration and noise due to unreasonable structural design during long-term use, which reduces the service life and reliability of the motor.

[0006] 3. Complex maintenance: Maintenance of traditional motors usually requires disassembling multiple parts, which increases the difficulty and cost of repair.

[0007] 4. Low energy efficiency: Many traditional motors have low energy efficiency and cannot meet the requirements of modern energy conservation and environmental protection.

[0008] To address the aforementioned problems, this utility model provides a cooling fan drive motor for an air cooler. By optimizing the motor's structural design and heat dissipation system, it improves the motor's heat dissipation performance and structural stability, simplifies maintenance, and enhances energy efficiency. The motor design of this utility model has the following key characteristics:

[0009] Optimized heat dissipation design: By improving the structure of the motor housing and end cover, the heat dissipation effect is enhanced, ensuring that the motor can still operate efficiently under high load.

[0010] Enhanced structural stability: The tight connection between the motor housing and the front and rear end covers, as well as the rational layout of the internal stator and rotor assemblies, significantly improve the stability and durability of the motor.

[0011] Simplified maintenance design: The various components of the motor are designed for easy disassembly and assembly, reducing maintenance difficulty and time, and improving work efficiency.

[0012] High energy efficiency design: Utilizing advanced electromagnetic design and materials, the motor's energy efficiency is improved, meeting modern energy-saving and environmental protection requirements.

[0013] Through these improvements, the air cooler cooling fan drive motor of this utility model has been significantly improved in terms of performance, reliability and ease of maintenance, and can better meet the needs of modern industrial and civil fields for efficient heat dissipation systems. Utility Model Content

[0014] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a fan drive motor that has significant improvements in heat dissipation, structural stability, ease of maintenance and energy efficiency.

[0015] The technical solution adopted by this utility model to achieve the above-mentioned objectives is as follows: a cooling fan drive motor for an air cooler, comprising a front cover, a motor housing, a motor base, a rear cover, a fan shroud, a stator assembly, and a rotor assembly. The front cover and rear cover are fixedly connected to both ends of the motor housing, forming a motor casing for mounting internal components such as the stator assembly and rotor assembly. The lower end of the motor housing is fixedly connected to the motor base, providing a mounting foundation for the motor. The stator assembly is fixedly mounted on the inner wall of the motor housing, and a rotor assembly is rotatably connected within the stator assembly. A motor shaft is fixedly connected to the middle of the rotor assembly. A front shaft support assembly is provided in the middle of the front cover, and one end of the motor shaft extends from the front shaft support assembly to the motor housing. The motor housing is connected to the cooling fan shaft at the rear. The front shaft support assembly provides rotational support for one end of the motor shaft and transmits power to the cooling fan shaft during motor operation. A rear shaft support assembly is located in the middle of the rear end cover. The other end of the motor shaft passes through the rear shaft support assembly and exits the motor housing before connecting to the fan. The rear shaft support assembly provides rotational support for the other end of the motor shaft and drives the fan to rotate during motor operation. The fan is used for ventilation and heat dissipation of the motor itself. A fan shroud is fixedly connected to the motor housing on one side of the fan. The fan is rotatably connected inside the fan shroud. The fan shroud has ventilation mesh holes in the middle, which ensures its own heat dissipation effect while preventing the fan from colliding with external objects and causing damage, as well as preventing the fan from causing injury to the operator.

[0016] In the above technical solution, several heat sinks are fixedly connected to the two sides of the outer wall of the motor housing, and gaps are left between the two sides of the motor housing and the edge of the fan cover. One end of each heat sink is set in the gap.

[0017] In the above technical solution, a lifting ring is fixedly connected to the upper middle part of the motor housing, and a junction box assembly is fastened to the motor housing on one side of the lifting ring. A waterproof connector is connected to one side of the junction box assembly, and the external power cord is introduced into the motor through the waterproof connector.

[0018] In the above technical solution, the front shaft support assembly includes a bearing sleeve, a front sealing cover, a rear sealing cover, a rolling bearing, a shaft sleeve, a spacer sleeve, a round nut, a first oil seal, a second oil seal, and bolts. A mounting hole is passed through the center of the front cover, and the bearing sleeve is inserted into the mounting hole. A rear sealing cover is provided inside the motor housing, and one end of the rear sealing cover is inserted into the bearing sleeve. A sealing ring is provided between the bearing sleeve and the rear sealing cover. A shaft sleeve is rotatably connected to the central through hole of the rear sealing cover. The shaft sleeve is limited and fitted onto the motor shaft. A first oil seal connects the shaft sleeve and the rear sealing cover. A rolling bearing is fixedly connected inside the bearing sleeve. A rolling bearing is sleeved and connected to the motor shaft. One side of the rolling bearing abuts against the shaft sleeve, and a round nut is threaded onto the motor shaft on the other side of the rolling bearing. The round nut abuts against the rolling bearing. A front sealing cover is connected to one end of the bearing sleeve located outside the motor. A second oil seal is connected between the front sealing cover and the motor shaft. Several connecting holes are evenly opened on the front end cover centered on the mounting hole. Fixing holes that match the connecting holes are opened on the bearing sleeve, the front sealing cover, and the rear sealing cover. Several spacer sleeves are connected between the rear sealing cover and the front end cover. Several bolts pass through the fixing holes, connecting holes, and spacer sleeves in sequence and are threaded onto the nuts.

[0019] In the above technical solution, the rear shaft support assembly includes a roller bearing, a steel wave spring, a sealing sleeve, and a sliding bearing. An installation sleeve is provided in the middle of the rear end cover, and a shaft hole is provided in the middle of the installation sleeve. The sealing sleeve and the sliding bearing are fixedly connected in the shaft hole, and a roller bearing is connected inside the installation sleeve. The roller bearing is limitedly connected to the motor shaft. A steel wave spring is provided inside the installation sleeve, and the steel wave spring abuts against one side of the roller bearing.

[0020] The beneficial effects of this utility model are:

[0021] 1. Improve heat dissipation performance:

[0022] By optimizing the design of the motor housing and end caps, the heat dissipation efficiency of the motor is enhanced, enabling the motor to effectively control the temperature during high load and long-term operation, avoiding overheating, and improving the motor's working stability and lifespan.

[0023] 2. Enhance structural stability:

[0024] The tight connection between the front and rear covers of the motor and the housing, along with the reasonable layout of the internal stator and rotor assemblies, greatly improves the structural stability of the motor, reduces vibration and noise during operation, and ensures reliable operation of the motor under various working conditions.

[0025] 3. Simplify the maintenance process:

[0026] The design takes into account the ease of maintenance of the motor, making the disassembly and assembly of each component simpler and faster, reducing maintenance time and labor costs, and improving the operating efficiency and maintenance economy of the equipment;

[0027] 4. Improve energy efficiency:

[0028] By adopting advanced electromagnetic design and high-quality materials, the motor can convert energy more efficiently during operation, reduce energy consumption, improve overall energy efficiency, and meet modern energy conservation and environmental protection requirements.

[0029] 5. Wide applicability:

[0030] The motor design of this utility model can be widely used in fields such as automobiles, aviation, and electronic equipment that require efficient heat dissipation, adapts to a variety of complex working conditions, and has strong market competitiveness and application prospects.

[0031] 6. Improved reliability and durability:

[0032] By improving the internal structure and material selection of the motor, the reliability and durability of the motor have been significantly improved, the failure rate and downtime of the equipment have been reduced, and the service life of the motor has been extended.

[0033] In summary, the air cooler cooling fan drive motor of this utility model has significantly improved in terms of heat dissipation performance, structural stability, ease of maintenance, and energy efficiency. It can better meet the needs of modern industrial and civil fields for high-efficiency heat dissipation systems and has significant economic and social benefits. Attached Figure Description

[0034] Figure 1 This is a side view sectional view of the motor structure of this utility model;

[0035] Figure 2 This is a front cross-sectional view of the present invention.

[0036] Figure 3 This is a schematic diagram of the connection structure of the front pivot support assembly of this utility model;

[0037] Figure 4 This is a schematic diagram of the connection structure of the rear shaft support assembly of this utility model.

[0038] In the diagram: 1. Front cover, 2. Motor housing, 3. Motor base, 4. Rear cover, 5. Fan cover, 6. Stator assembly, 7. Rotor assembly, 8. Motor shaft, 9. Front shaft support assembly, 10. Rear shaft support assembly, 11. Fan, 101. Heat sink, 102. Lifting ring, 103. Junction box assembly, 104. Waterproof connector, 105. External power cord, 201. Bearing sleeve, 202. Front sealing cover, 203. Rear sealing cover, 204. Rolling bearing, 205. Shaft sleeve, 206. Spacer sleeve, 207. Round nut, 208. First oil seal, 209. Second oil seal, 210. Bolt, 211. Sealing ring, 212. Nut, 301. Roller bearing, 302. Steel wave spring, 303. Sealing sleeve, 304. Sliding bearing, 305. Mounting sleeve. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Please see Figure 1-4A cooling fan drive motor for an air cooler includes a front cover 1, a motor housing 2, a motor base 3, a rear cover 4, a fan shroud 5, a stator assembly 6, and a rotor assembly 7. The front cover 1 and the rear cover 4 are fixedly connected to both ends of the motor housing 2, forming a motor casing for mounting internal components such as the stator assembly 6 and the rotor assembly 7. The motor base 3 is fixedly connected to the lower end of the motor housing 2 to provide the mounting foundation for the motor. The stator assembly 6 is fixedly mounted on the inner wall of the motor housing 2, and the rotor assembly 7 is rotatably connected within the stator assembly 6. A motor shaft 8 is fixedly connected to the middle of the rotor assembly 7. A front shaft support assembly 9 is provided in the middle of the front cover 1. One end of the motor shaft 8 extends from the front shaft support assembly 9 to the outside of the motor housing 2 and connects with the cooling fan. The motor shaft is connected to the fan 11. The front shaft support assembly 9 is used to support one end of the motor shaft 8 and transmits power to the cooling fan shaft during motor operation. The rear shaft support assembly 10 is provided in the middle of the rear cover 4. The other end of the motor shaft 8 passes through the rear shaft support assembly 10 and exits the motor housing 2 to connect with the fan 11. The rear shaft support assembly 10 is used to support the other end of the motor shaft 8 and drives the fan 11 to rotate during motor operation. The fan 11 is used for ventilation and heat dissipation of the motor itself. A fan cover 5 is fixedly connected to the motor housing 2 on one side of the fan 11. The fan 11 is rotatably connected inside the fan cover 5. The fan cover 5 has ventilation mesh holes in the middle, which ensures its own heat dissipation effect and can prevent the fan 11 from colliding with external objects and being damaged, and can also prevent the fan 11 from causing injury to the operator.

[0041] In this embodiment of the utility model, several heat sinks 101 are fixedly connected to the two sides of the outer wall of the motor housing 2. There are gaps between the two sides of the motor housing 2 and the edge of the fan cover 5. One end of the heat sink 101 is respectively set in the gap. When the motor is working, the motor shaft 8 drives the fan 11 to rotate. The fan 11 draws in air through the ventilation mesh in the middle and blows the air out through the gap between the motor housing 2 and the edge of the fan cover 5. At this time, the air will flow along the groove formed between the adjacent heat sinks 101, thereby taking away the heat on the motor housing 2 and the heat sinks 101, and increasing the heat dissipation effect when the motor is working.

[0042] In this embodiment of the utility model, a lifting ring 102 is fixedly connected to the upper middle part of the motor housing 2. The design of the lifting ring 102 facilitates the handling and installation of the motor. During installation and maintenance, lifting equipment can be used through the lifting ring 102 to reduce the burden of manpower and improve safety and efficiency. A junction box assembly 103 is fastened to the motor housing 2 on one side of the lifting ring 102. A waterproof connector 104 is connected to one side of the junction box assembly 103. The external power cord 105 is introduced into the motor through the waterproof connector 104. The waterproof connector 104 ensures that the external power cord 105 is introduced into the motor through the waterproof connector 104, preventing moisture and dust from entering the junction box, thereby protecting the safety and stability of the electrical connection and improving the protection level of the motor.

[0043] In this embodiment of the utility model, the front shaft support assembly 9 includes a bearing sleeve 201, a front sealing cover 202, a rear sealing cover 203, a rolling bearing 204, a shaft sleeve 205, a spacer sleeve 206, round nuts 212 and 207, a first oil seal 208, a second oil seal 209, and bolts 210. A mounting hole is provided through the center of the front cover 1 to provide a stable support base for the bearing sleeve 201. The bearing sleeve 201 is inserted into the mounting hole. A rear sealing cover 203 is provided inside the motor housing 2, with one end of the rear sealing cover 203 inserted into the bearing sleeve 201. A sealing ring 211 is provided between the bearing sleeve 201 and the rear sealing cover 203 to improve bearing performance. The sealing connection between sleeve 201 and rear sealing cover 203 is as follows: a rotating shaft sleeve 205 is rotatably connected in the central through hole of the rear sealing cover 203. The rotating shaft sleeve 205 is fitted onto the motor shaft 8 to ensure relative rotation of the motor shaft 8 within the rear sealing cover 203. A first oil seal 208 connects the rotating shaft sleeve 205 and the rear sealing cover 203. A rolling bearing 204 is fixedly connected inside the bearing sleeve 201. The rolling bearing 204 is connected to the motor shaft 8 through the sleeve 201, providing low-friction, high-precision rotational support for the rotation of the motor shaft 8. One side of the rolling bearing 204 abuts against the rotating shaft sleeve 205, and the other side of the rolling bearing 204 is threaded onto the motor shaft 8. A round nut 212207 is attached, which abuts against the rolling bearing 204 to ensure the axial fixation and stability of the rolling bearing 204. A front sealing cover 202 is connected to one end of the bearing sleeve 201 located outside the motor. A second oil seal 209 connects the front sealing cover 202 to the motor shaft 8. Several connecting holes are evenly distributed on the front end cover 1 centered on the mounting hole. Fixing holes matching the connecting holes are respectively formed on the bearing sleeve 201, the front sealing cover 202, and the rear sealing cover 203. Several spacer sleeves 206 connect the rear sealing cover 203 to the front end cover 1. Several bolts 210 pass sequentially through the fixing holes, connecting holes, and spacer sleeves 206. After 06, they are respectively threaded to nuts 212. In this utility model, the front sealing cover 202 and the rear sealing cover 203 are located at both ends of the bearing sleeve 201, forming a sealed structure. A sealing ring 211 is provided between the bearing sleeve 201 and the rear sealing cover 203. A first oil seal 208 is connected between the rear sealing cover 203 and the shaft sleeve 205, and a second oil seal 209 is connected between the front sealing cover 202 and the motor shaft 8. The multi-seal design effectively prevents lubricating oil leakage and external dust from entering, ensuring good support and rotation performance of the motor shaft 8. It also effectively protects the internal bearings and shaft through the multi-seal structure, preventing lubricating oil leakage and the entry of external contaminants. This precise structural design improves the reliability and service life of the motor and is suitable for motor applications in various harsh working environments.

[0044] In this embodiment of the invention, the rear shaft support assembly 10 includes a roller bearing 301, a steel wave spring 302, a sealing sleeve 303, and a sliding bearing 304. A mounting sleeve 305 is provided in the middle of the rear end cover 4, and a shaft hole is provided in the middle of the mounting sleeve 305. The sealing sleeve 303 and the sliding bearing 304 are fixedly connected in the shaft hole. The sealing sleeve 303 provides a sealing effect to prevent lubricating oil leakage and the entry of external contaminants. The sliding bearing 304 provides low-friction support, allowing the motor shaft 8 to rotate smoothly during operation. The roller bearing 301 is connected inside the mounting sleeve 305 and is positioned on the motor shaft 8 to provide high precision. The rotary support ensures stable operation of the motor shaft. A steel wave spring 302 is installed inside the mounting sleeve 305. The steel wave spring 302 abuts against one side of the roller bearing 301, providing a buffering effect to absorb axial vibration and impact. Simultaneously, it applies preload to the roller bearing 301, keeping the bearing in the restricted position of the motor shaft 8. The rear shaft support assembly 10 provides effective sealing and low-friction support through the sealing sleeve 303 and the sliding bearing 304. The roller bearing 301 provides high-precision rotary support. The steel wave spring 302, through its elastic properties, provides buffering and preload effects, further improving the stability and durability of the support system. Combining the functions of these components, the rear shaft support assembly 10 effectively protects the motor shaft 8, reduces wear and vibration, improves the overall performance and service life of the motor, and is suitable for various motor applications requiring high stability and reliability.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cooling fan drive motor for an air cooler, comprising a front cover (1), a motor housing (2), a motor base (3), a rear cover (4), a fan shroud (5), a stator assembly (6), and a rotor assembly (7), characterized in that: The motor housing (2) is fixedly connected to a front end cover (1) and a rear end cover (4) at both ends, respectively. The motor housing (2) is fixedly connected to a motor base (3) at the lower end. A stator assembly (6) is fixedly installed on the inner wall of the motor housing (2). A rotor assembly (7) is rotatably connected inside the stator assembly (6). A motor shaft (8) is fixedly connected to the middle of the rotor assembly (7). A front shaft support assembly (9) is provided in the middle of the front end cover (1). The motor shaft ( One end of the motor shaft (8) extends from the front shaft support assembly (9) to the outside of the motor housing (2) and is connected to the shaft of the cooling fan. The rear shaft support assembly (10) is provided in the middle of the rear end cover (4). The other end of the motor shaft (8) passes through the rear shaft support assembly (10) and out of the motor housing (2) and is connected to the fan (11). A fan cover (5) is fixedly connected to the motor housing (2) on one side of the fan (11). The fan (11) is rotatably connected inside the fan cover (5).

2. The air cooler cooling fan drive motor according to claim 1, characterized in that: Several heat sinks (101) are fixedly connected to the two sides of the outer wall of the motor housing (2). There are gaps between the two sides of the motor housing (2) and the edge of the fan cover (5). One end of each heat sink (101) is set in the gap.

3. The air cooler cooling fan drive motor according to claim 1, characterized in that: A lifting ring (102) is fixedly connected to the upper middle part of the motor housing (2). A junction box assembly (103) is fastened to the motor housing (2) on one side of the lifting ring (102). A waterproof connector (104) is connected to one side of the junction box assembly (103). An external power cord (105) is introduced into the motor through the waterproof connector (104).

4. The air cooler cooling fan drive motor according to claim 1, characterized in that: The front shaft support assembly (9) includes a bearing sleeve (201), a front sealing cover (202), a rear sealing cover (203), a rolling bearing (204), a shaft sleeve (205), a spacer sleeve (206), a round nut (212) (207), a first oil seal (208), a second oil seal (209), and a bolt (210). A mounting hole is passed through the center of the front end cover (1), and the bearing sleeve (201) is inserted into the mounting hole. A rear sealing cover (203) is provided inside the motor housing (2). One end of the rear sealing cover (203) is inserted into the bearing sleeve (201). A sealing ring (211) is provided between the bearing sleeve (201) and the rear sealing cover (203). A rotating shaft sleeve (205) is rotatably connected in the central through hole of the rear sealing cover (203). The rotating shaft sleeve (205) is limited and sleeved on the motor shaft (8). A first oil seal (208) is connected between the rotating shaft sleeve (205) and the rear sealing cover (203). A rolling bearing (204) is fixedly connected inside the bearing sleeve (201). The rolling bearing (204) sleeve (201) is connected to the motor shaft (8). One side of the rolling bearing (204) abuts against the shaft sleeve (205). A round nut (212) (207) is threaded onto the motor shaft (8) on the other side of the rolling bearing (204). The round nut (212) (207) abuts against the rolling bearing (204). A front sealing cover (202) is connected to one end of the bearing sleeve (201) located outside the motor. The front sealing cover (202) is connected to the motor shaft. (8) is connected by a second oil seal (209). A number of connecting holes are evenly opened on the front end cover (1) centered on the mounting hole. The bearing sleeve (201), the front sealing cover (202), and the rear sealing cover (203) are respectively provided with fixing holes that are compatible with the connecting holes. A number of spacer sleeves (206) are connected between the rear sealing cover (203) and the front end cover (1). A number of bolts (210) pass through the fixing holes, connecting holes, and spacer sleeves (206) in sequence and are threaded to nuts (212).

5. The air cooler cooling fan drive motor according to claim 1, characterized in that: The rear shaft support assembly (10) includes a roller bearing (301), a steel wave spring (302), a sealing sleeve (303), and a sliding bearing (304). An installation sleeve (305) is provided in the middle of the rear end cover (4). A shaft hole is provided in the middle of the installation sleeve (305). The sealing sleeve (303) and the sliding bearing (304) are fixedly connected in the shaft hole. The roller bearing (301) is connected in the installation sleeve (305). The roller bearing (301) is limited and connected to the motor shaft (8). A steel wave spring (302) is provided inside the installation sleeve (305). The steel wave spring (302) abuts against one side of the roller bearing (301).

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