Brushless direct current motor capable of guiding air through multiple blades to dissipate heat of machine core

Abstract

A wind-guiding multi-blade wind wheel is arranged on a vertical wind-guiding port of a shaft sleeve rotor of the direct-current brushless motor, and the shaft sleeve rotor of the motor rotates towards the opening direction of the bevel-angle blades by means of the bevel-angle blades of the wind wheel. According to the utility model, the number of the air ports at the upper part of the shaft sleeve rotor of the direct-current brushless motor is the same as that of the blades of the air guide wind wheel, and the contact surfaces of the blades and the air guide ports are sealed by glue, so that the air guide effect of the direct-current brushless motor is improved; the larger the rotating speed of a direct-current brushless motor shaft sleeve rotor provided with the multi-blade wind wheel is, the larger the wind guiding speed of the wind guiding openings is, the higher the heat dissipation capacity of a coil in a motor core is, and the higher the heat dissipation capacity of the coil in the motor core is, the larger the rotating speed of the direct-current brushless motor shaft sleeve rotor provided with the multi-blade wind wheel is. The direct current brushless motor provided by the utility model greatly increases the heat dissipation efficiency, improves the service life and performance of the direct current brushless motor, and solves the problems that the conventional direct current brushless motor core has no heat dissipation and has defects in heat dissipation design and processing technology.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a multi-blade air guide DC brushless motor for cooling the motor core. Background Technology

[0002] The DC brushless motor in the rotor engine of drones or manned aircraft converts electrical energy into mechanical energy. It can play a role in people's lives and in the fields of commercial and military drones, improving people's quality of life. Moreover, electricity meets the requirements of low carbon and environmental protection, so its application is becoming more and more widespread.

[0003] Brushless DC motors are characterized by low interference, low noise, long lifespan, and low maintenance costs, and have gradually begun to be used in the field of electric aircraft with the development of society. However, brushless DC motors also have the characteristics of high heat generation and low output power, which means that the brushless DC motors in aircraft such as drones have a short service life, and the lack of effective heat dissipation of the motor core makes them prone to burnout and crashes, thus shortening the service life of the aircraft.

[0004] Currently, the cooling structures of commercially available brushless DC motors and those with publicly disclosed technologies have cooling fan vents perpendicular to the motor's central axis. This perpendicular design is necessary because the motor rotor shaft and housing require molding perpendicular to the central axis. Therefore, commercially available brushless DC motors all have cooling fan vents designed perpendicular to their central axis; otherwise, the manufacturing process and costs would increase exponentially. Furthermore, aircraft such as drones and manned aircraft, especially multi-rotor drones, which equip multiple brushless DC motors, require simultaneous forward and reverse rotation. This necessitates that the cooling fan vents of existing brushless DC motors be perpendicular to the motor's central axis, resulting in virtually no heat dissipation.

[0005] Therefore, there is an urgent need for a DC brushless motor that can dissipate heat from the motor core. This requires solving both the manufacturing process and the technical challenge of the DC brushless motor core coil generating excessive heat and failing to dissipate it in time during the simultaneous forward and reverse rotation assembly of rotor engines for drones and manned aircraft.

[0006] Technical issues

[0007] In view of this, the present invention provides a multi-blade air-guided brushless DC motor for cooling the motor core, which can solve the processing technology problem and provide timely air-guided cooling for the heating coil of the motor core of each brushless DC motor in drones and manned spacecraft, regardless of whether it is installed in forward or reverse rotation. Moreover, the manufacturing process is simple, the weight is light, and the cost is low.

[0008] Technical solutions

[0009] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0010] The present invention provides a multi-blade air-guided heat dissipation DC brushless motor, comprising three main components: a DC brushless motor core coil stator base, a shaft sleeve rotor with air vents in the vertical direction of the DC brushless motor core coil stator, and a multi-blade impeller that guides air through the air vents on the upper part of the shaft sleeve rotor to dissipate heat from the core coil.

[0011] Beneficial effects

[0012] Compared with existing technologies, this utility model provides a multi-blade air-guided brushless DC motor for cooling the motor core. A multi-blade air-guided impeller is installed on the vertical air vent of the brushless DC motor's rotor shaft. With the help of these angled blades, the rotor rotates towards the opening of the angled blades, generating airflow that cools the internal coils of the brushless DC motor through the vertical air vent. The number of air vents and air-guided impeller blades on the upper part of the rotor shaft of this utility model is the same, and the contact surfaces of the blades and air vents are sealed with adhesive to enhance the air-guided effect. This creates an angled air-guided angle at the contact points between the impeller blades and the vertical air vent support surface. Multiple blades and the vertical air vent form multiple angled air vents. The higher the rotational speed of the rotor shaft of the brushless DC motor equipped with the multi-blade impeller, the greater the airflow speed at the air vent, thus strengthening the cooling capacity of the coils inside the motor core. This significantly increases the cooling efficiency and comprehensively improves the service life and performance of the brushless DC motor. It is foreseeable that this utility model will trigger a comprehensive upgrade of brushless DC motors for UAV and manned aircraft engines. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For researchers or ordinary people, other drawings can be obtained based on the drawings without creative effort.

[0014] The present invention provides a swarm system-controlled aerial deformable reconnaissance and strike UAV, further described below with reference to the accompanying drawings and examples. Other drawings can also be derived based on the structures shown in these drawings.

[0015] Figure 1 A three-dimensional view of a multi-blade air guide DC brushless motor for heat dissipation of the motor core, provided for this utility model.

[0016] Figure 2 A schematic diagram of a multi-blade air guide DC brushless motor structure for heat dissipation of the motor core, provided by this utility model.

[0017] Figure 3 A top view of a multi-blade air guide DC brushless motor for heat dissipation of the motor core, provided by this utility model.

[0018] Figure 4 A bottom view of a multi-blade air guide DC brushless motor for heat dissipation of the motor core, provided by this utility model.

[0019] Figure 5 Front view of a multi-blade air guide DC brushless motor for heat dissipation of the motor core, provided by this utility model.

[0020] Figure 6 Rear view of a multi-blade air guide DC brushless motor for heat dissipation of the motor core, provided by this utility model.

[0021] Figure 7 Left view of a multi-blade air guide DC brushless motor for heat dissipation of the motor core, provided by this utility model.

[0022] Figure 8 The right view of a multi-blade air guide DC brushless motor for heat dissipation of the motor core provided by this utility model.

[0023] Figure label:

[0024] Specifically Figure 2 The following are descriptions of the structure and components: 1. Multi-blade impeller; 2. Secondary fixing screw hole; 3. Primary fixing nut thread; 4. Multi-blade impeller shaft; 5. Core permanent magnet block; 6. Shaft bracket; 7. Motor housing cover; 8. Vertical air guide; 9. Shaft; 10. Bearing; 11. Motor core coil; 12. Coil bracket; 13. Motor power supply line; 14. Motor base with fixing hole; 15. Shaft retaining ring.

[0025] Embodiments of this utility model

[0026] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the description herein...

[0027] The specific embodiments described are merely illustrative of the present invention and are not intended to limit the scope of the present invention.

[0028] like Figure 1 As shown, Figure 2 This is a schematic diagram of the structure of the brushless DC motor provided by this utility model.

[0029] This utility model provides a multi-blade air-guiding and heat-dissipating DC brushless motor, which includes the following structural components: 1. multi-blade impeller, 2. secondary fixing screw holes, 3. primary fixing nut thread, 4. multi-blade impeller shaft, 5. motor core permanent magnet block, 6. shaft bracket, 7. motor body cover, 8. vertical air guide, 9. shaft, 10. bearing, 11. motor core coil, 12. coil bracket, 13. motor power supply line, 14. motor base with fixing holes, and 15. shaft retaining ring.

[0030] In this embodiment, Figure 1 After assembly along the vertical centerline, this provides a three-dimensional view of a multi-blade air guide DC brushless motor for heat dissipation of the motor core. The significant features in the figure are: 1. After the multi-blade impeller and 4. after the multi-blade impeller shaft are assembled, each impeller blade is attached to 8. the vertical air guide, forming a significantly angled air guide; the number of impeller blades and the number of 8 vertical air guides are the same, with one blade corresponding to one vertical air guide.

[0031] Specifically, in combination Figure 1 and Figure 2 This utility model provides a multi-blade air guide for cooling the motor core of a DC brushless motor. The motor core consists of a 9. rotating shaft, a 7. motor housing, a 6. rotating shaft bracket, a 5. core permanent magnet, a 4. multi-blade impeller shaft, and a 1. multi-blade impeller. Together, they form the DC motor shaft and rotor. When the 13. motor power supply line on the 14. motor base with fixing holes is energized, the 11. motor core coil generates magnetic force, which interacts with the 5. core permanent magnet on the DC motor rotor, driving the motor rotor to rotate. As the motor rotor rotates, the multi-blade impeller rotates synchronously, thus guiding air through the air guide into the motor core, achieving heat dissipation for the energized coils within the core. When the motor reverses, a multi-blade impeller with reverse blades needs to be installed.

[0032] Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 These are various angle views of a multi-blade air-guiding DC brushless motor for cooling the motor core, provided by this utility model, to illustrate the shape, features and functions of this utility model invention.

[0033] The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but this does not limit the scope of the present invention. Those skilled in the art can implement the present invention in various modifications without departing from its scope and essence; for example, a feature of one embodiment can be used in another embodiment to obtain yet another embodiment. Any modifications, equivalent substitutions, and improvements made within the scope of the present invention's technical concept should be within the scope of the present invention.

[0034] Industrial applicability

[0035] This invention provides a multi-blade air-guided brushless DC motor for cooling the motor core. A multi-blade impeller is installed on the vertical air vent of the DC brushless motor's rotor shaft. With the help of these angled blades, the rotor rotates towards the opening of the angled blades, generating airflow that cools the internal coils of the DC brushless motor through the vertical air vent. The number of air vents and impeller blades on the upper part of the rotor shaft is the same as the number of blades in this invention. The contact surfaces between the blades and the air vents are sealed with adhesive to enhance the airflow effect, creating an angled airflow at the contact points between the impeller blades and the vertical air vent support surface. Multiple blades and multiple vertical air vents form multiple angled air vents. The higher the rotor speed of the DC brushless motor with the multi-blade impeller, the greater the airflow velocity at the air vents, and the stronger the cooling capacity for the internal coils of the motor core. This significantly increases the cooling efficiency, improves the service life and performance of the DC brushless motor, and solves the problems of insufficient cooling in existing DC brushless motor cores and deficiencies in cooling design and manufacturing processes.

Claims

1. A multi-blade air-guiding brushless DC motor for heat dissipation of the motor core, characterized in that: It is composed of the following structural components: multi-blade impeller (1), secondary fixing screw hole (2), primary fixing nut thread (3), multi-blade impeller shaft (4), core permanent magnet block (5), shaft bracket (6), motor body cover (7), vertical air guide (8), shaft (9), bearing (10), motor core coil (11), coil bracket (12); motor power supply line (13); motor base with fixing hole (14), shaft retaining ring (15). Its characteristic is that after the multi-blade impeller (1) and multi-blade impeller shaft (4) are assembled, each blade of the multi-blade impeller (1) fits against the vertical air guide (8) to form an angled air guide.

2. A multi-blade air-guiding DC brushless motor for heat dissipation of the motor core as specified in claim 1, characterized in that: The number of blades in the wind turbine (1) is the same as the number of vertical air guides (8), with one blade corresponding to one vertical air guide.

3. A multi-blade air-guiding DC brushless motor for heat dissipation of the motor core as specified in claim 1, characterized in that: The multi-bladed impeller (1) maintains good air guiding effect at the contact parts of each blade and each vertical air guide (8) and is bonded with sealant.

4. A multi-blade air-guiding DC brushless motor for heat dissipation of the motor core as specified in claim 1, characterized in that: There are two types of multi-bladed wind turbines (1): one with a positive direction and the other with a negative direction. The blades of the multi-bladed wind turbine (1) and the vertical air guide (8) form an angled air guide, which is directed toward the direction of the motor shaft.

5. A multi-blade air-guiding DC brushless motor for heat dissipation of the motor core as specified in claim 1, characterized in that: The rotating shaft (9), motor housing (7), rotating shaft bracket (6), core permanent magnet block (5), multi-blade wind turbine shaft (4) and multi-blade wind turbine (1) together form the DC motor shaft sleeve rotor.

6. A multi-blade air-guiding DC brushless motor for heat dissipation of the motor core as specified in claim 1, characterized in that: After the motor power supply line (13) on the motor base (14) with fixed hole is energized, the motor core coil (11) generates magnetic force, which interacts with the core permanent magnet block (5) on the DC motor rotor, driving the motor rotor to rotate. The motor shaft sleeve rotor rotates, and the multi-blade impeller (1) also rotates synchronously. The air outside the motor is introduced into the motor core through the angled air guide formed by the blades of the multi-blade impeller (1) and the vertical air guide (8), realizing heat dissipation of the energized coil inside the DC brushless motor core.

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