Brushless fan motor and equipment

Abstract

The utility model relates to the technical field of motors, solves the technical problem that heat cannot be timely and effectively dissipated in a brushless motor, and provides a brushless fan motor which comprises a fan assembly and a motor assembly. The motor assembly comprises a rotor unit and a stator unit, the rotor unit comprises a rotating shaft and a magnetic piece, and the magnetic piece is fixed to the first end of the rotating shaft in a sleeving mode; the fan assembly comprises an impeller and an air duct, and the second end of the rotating shaft penetrates through the air duct and is fixed to the impeller in a sleeving mode; and the impeller and the rotating shaft are positioned in the air duct. By arranging the fan assembly, the motor drives the fan assembly to rotate, so that external air rapidly flows in the air duct, the air rapidly flows from one end of the impeller to the stator unit, and heat generated by the stator unit is effectively taken away in time.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a brushless fan motor and a device. Background Art

[0002] As a key component in modern electrical engineering and automation technology, brushless motors have been widely used in multiple industries due to their high efficiency, low noise, and long lifespan. The traditional structure of a brushless motor includes a motor main body and a corresponding drive control unit, which work together to drive the motor in an automatic control mode, avoiding the need for a starting winding on the rotor during heavy-load startup of traditional motors and eliminating oscillations and out-of-step phenomena caused by sudden changes in load.

[0003] A significant problem faced by brushless motors in practical applications is heat dissipation. The stator assembly is encapsulated within the motor housing, and a large amount of heat generated during operation is difficult to effectively dissipate due to the heat insulation of the housing. Long-term operation at high temperatures not only leads to a decline in motor performance but may also cause premature failure of the device. Traditional heat dissipation solutions are often inefficient, especially regarding the material and design of the radiator. Usually, a copper balance weight is used to assist in heat dissipation, but this not only incurs high costs but also involves a complex installation process, requiring additional equipment investment and labor costs, thereby increasing the overall manufacturing cost of the brushless motor. Summary of the Utility Model

[0004] In view of this, embodiments of the present utility model provide a brushless fan motor and a device to solve the technical problem of the inability to dissipate heat in a timely and effective manner in existing brushless motors.

[0005] In a first aspect, embodiments of the present utility model provide a brushless fan motor, the motor comprising: the motor includes a fan assembly 1 and a motor assembly 2;

[0006] The motor assembly 2 includes a rotor unit 21 and a stator unit 22. The rotor unit 21 includes a rotating shaft 211 and a magnetic member 212, and the magnetic member 212 is sleeved and fixed to the first end 2111 of the rotating shaft 211.

[0007] The fan assembly 1 includes an impeller 11 and a wind cylinder 12, and the second end 2112 of the rotating shaft 211 passes through the wind cylinder 12 and is sleeved and fixed to the impeller 11.

[0008] Wherein, the impeller 11 and the rotating shaft 211 are located within the wind cylinder 12.

[0009] Preferably, the wind cylinder 12 includes a housing 121, a support member 122, and a plurality of grid members 123 disposed between the housing 121 and the support member 122.

[0010] Preferably, the fan assembly 1 further includes a first bearing 126, which is sleeved in the middle of the rotating shaft 211 and is used for sleeved and fixedly installed with the air duct 12.

[0011] Preferably, the support member 122 extends inward to form a connecting portion 124, and a first through hole 125 is provided in the middle of the connecting portion 124;

[0012] Both ends of the first bearing 126 bulge outward 1261, and an annular groove 1262 is formed in the middle position. The first bearing 126 passes through the first through hole 125, and the annular groove 1262 is sleeved and installed with the connecting platform.

[0013] Preferably, the stator unit 22 includes: a stator body 221 and windings wound around the stator body 221. Several winding portions 222 are arranged around the inside of the stator iron, and a wire groove 223 for winding the windings is provided in the winding portion 222;

[0014] The several winding portions 222 are arranged at a certain interval.

[0015] Preferably, the ends of the winding portions 222 inside the stator body 221 surround and form a second through hole 224 for the magnetic member 212 to pass through.

[0016] Preferably, the motor further includes a drive board 4, and the drive board 4 is electrically connected to one end of the stator unit 22 and is used to receive an external instruction to control the current on the stator unit 22.

[0017] Preferably, the motor further includes a housing 3 for placing the fan assembly 1 and the motor assembly 2;

[0018] The material of the housing 3 is made of elastic plastic.

[0019] Preferably, a positioning groove 31 is provided on the inner wall of the housing 3;

[0020] The outer shell 121 is provided with a positioning member 1211, and the fan assembly 1 and the housing 3 are positioned and installed through the positioning groove 31 and the positioning member 1211.

[0021] In a second aspect, an embodiment of the present invention provides a device, and the device includes the brushless fan motor described above.

[0022] In summary, the beneficial effects of the present invention are as follows:

[0023] The brushless fan motor and device provided by the embodiment of the present utility model. By setting a fan assembly, the motor drives the fan assembly to rotate, enabling the external air to flow rapidly within the air duct, such that the air flows rapidly from one end of the impeller towards the stator unit direction, effectively and timely carrying away the heat generated by the stator unit.

[0024] The impeller and the rotating shaft located within the air duct can help optimize the air flow path, reduce air flow interference, and enhance the wind power output efficiency. Meanwhile, the overall volume is reduced, making the fan more lightweight, facilitating installation and movement.

[0025] In the rotor unit, the magnetic part is sleeved and fixed on the rotating shaft, which can ensure the uniformity and stability of the magnetic field distribution, and improve the operation efficiency and stability of the motor.

[0026] Meanwhile, while being able to carry the heat to the air, the formed rapid air flow is used for devices such as fans and hair dryers. While solving the stator heat dissipation problem, other functions are also achieved. The brushless fan motor realizes high efficiency, energy conservation, low noise, long life, and excellent control performance through the adoption of brushless motor technology and optimized structural design, providing users with a more efficient, quiet, durable, and easy-to-operate product for generating wind. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, and all of these are within the protection scope of the present utility model.

[0028] Figure 1 Structural schematic diagram of the brushless fan motor described in Embodiment 1;

[0029] Figure 2 Structural schematic diagram of the brushless fan motor described in Embodiment 1;

[0030] Figure 3 Exploded structural schematic diagram of the fan assembly and the motor assembly in the brushless fan motor described in Embodiment 1;

[0031] Figure 4 Exploded structural schematic diagram of the fan assembly and the motor assembly in the brushless fan motor described in Embodiment 1;

[0032] Figure 5 Installation structural schematic diagram of the fan assembly and the motor assembly in the brushless fan motor described in Embodiment 1;

[0033] Figure 6Schematic diagram of the installation structure of the fan assembly and the motor assembly in the brushless fan motor described in Embodiment 1;

[0034] Figure 7 Exploded view of the structure of the fan assembly and the motor assembly in the brushless fan motor described in Embodiment 1;

[0035] Figure 8 Schematic diagram of the structure of the stator unit in the brushless fan motor described in Embodiment 1;

[0036] Figure 9 Schematic diagram of the structure of the housing in the brushless fan motor described in Embodiment 1.

[0037] Parts and numbers in the figure: 1. Fan assembly; 11. Impeller; 12. Air duct; 121. Outer shell; 1211. Positioning member; 122. Support member; 123. Grid member; 124. Connecting portion; 125. First through hole; 126. First bearing; 1261. Protrusion; 1262. Annular groove; 2. Motor assembly; 21. Rotor unit; 211. Rotating shaft; 2111. First end; 2112. Second end; 212. Magnetic member; 22. Stator unit; 221. Stator body; 222. Winding portion; 223. Wire groove; 224. Second through hole; 3. Housing; 31. Positioning groove; 4. Driving board. Detailed implementation manners

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. Moreover, the term "comprises", "comprising", or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or device. Without further limitation, elements defined by the statement "comprising..." do not exclude the presence of additional identical elements in the process, method, article, or device comprising the said elements. If there is no conflict, the embodiments of the present utility model and the various features in the embodiments may be combined with each other, and all are within the protection scope of the present utility model.

[0039] Embodiment 1

[0040] Please refer to Figures 1-4 , the embodiments of the present utility model provide a brushless fan motor, and the motor includes: the motor includes a fan assembly 1 and a motor assembly 2;

[0041] The motor assembly 2 includes a rotor unit 21 and a stator unit 22. The rotor unit 21 includes a rotating shaft 211 and a magnetic member 212, and the magnetic member 212 is sleeved and fixed on the first end 2111 of the rotating shaft 211;

[0042] The fan assembly 1 includes an impeller 11 and a wind cylinder 12, and the second end 2112 of the rotating shaft 211 passes through the wind cylinder 12 and is sleeved and fixed with the impeller 11;

[0043] Among them, the impeller 11 and the rotating shaft 211 are located inside the wind cylinder 12.

[0044] Specifically, when the rotating shaft 211 rotates, the impeller 11 promotes air flow. The air duct 12 is cylindrical in shape and is used to guide and accelerate air flow, which can improve the wind power output efficiency. The magnetic member 212 is fixed to one end of the rotating shaft 211 by an adhesive or a mechanical fastener (such as a screw) to ensure a firm connection even under high-speed rotation. The second end 2112 of the rotating shaft 211 passes through the center of the air duct 12, and the impeller 11 is fixed to the end of the rotating shaft 211 by a tight fit or threads, etc., to ensure airtightness and stability.

[0045] The fan assembly 1 and the motor assembly 2 are integrally designed, with a compact overall structure, which simplifies the assembly process and at the same time ensures efficient air flow.

[0046] By fixing the magnetic member 212 to the first end 2111 of the rotating shaft 211, it can ensure a stable and concentrated magnetic field during rotor rotation, improving the working efficiency and stability of the motor.

[0047] The impeller 11 is fixedly installed on the second end 2112 of the rotating shaft 211, so that the impeller 11 rotates precisely with the rotating shaft 211, ensuring the continuity and stability of the wind power output.

[0048] In this embodiment, by using a brushless motor, mechanical wear and electric sparks are reduced, operating noise is lowered, and at the same time, the energy conversion efficiency is improved; the integrated design makes the fan motor more compact, easy to install in a narrow space, and has a more concise and modern appearance. At the same time, by arranging the rotating shaft and the impeller 11 inside the air duct 12, it can effectively guide and accelerate the air flow, and maintain good wind power output even at low rotational speeds, suitable for different scenario requirements.

[0049] In one embodiment, as Figure 5 、 Figure 6 shown, the air duct 12 includes: a housing 121, a support member 122, and a plurality of grid members 123 disposed between the housing 121 and the support member 122.

[0050] Specifically, several grid members 123 are disposed between the housing 121 and the support member 122. The grid members 123 support and connect the housing 121 and the support member 122, reducing the weight of the air duct 12 as a whole, optimizing the air flow path inside the air duct 12, adjusting the air flow speed and direction to a certain extent, and reducing noise.

[0051] The housing 121, the support member 122, and the grid members 123 are provided with an integrated structure, making its structure fixed and not loose, and avoiding affecting the stability of the air duct 12 when the rotating shaft 211 rotates.

[0052] In this embodiment, by arranging several grid members 123 between the outer shell 121 and the support member 122, the air flow is more evenly distributed and more effectively guided inside the air duct 12, enhancing the smoothness and efficiency of the wind power output while reducing wind noise.

[0053] At the same time, the outer shell 121 and the support member 122 are connected by the grid member 123, significantly improving the anti-deformation ability of the air duct 12, and maintaining structural stability even under high load or long-term operation, thus extending the service life.

[0054] In one embodiment, as Figures 5-7 shown, the fan assembly 1 further includes a first bearing 126, and the first bearing 126 is sleeved in the middle of the rotating shaft 211 for sleeved and fixed installation with the air duct 12.

[0055] Specifically, the first bearing 126 is installed between the first end 2111 and the second end 2112 of the rotating shaft 211 to support the rotating shaft 211, reduce friction, and ensure the smooth rotation of the rotating shaft 211. At the same time, the setting of the first bearing 126 avoids the direct contact between the air duct 12 and the rotating shaft 211, preventing the overall structure stability of the air duct 12 from being affected when the rotating shaft 211 rotates; through the fixed connection between the first bearing 126 and the air duct 12, the accurate positioning of the rotating shaft 211 is ensured, avoiding noise and efficiency loss caused by eccentric rotation.

[0056] In this embodiment, through the setting of the first bearing 126, the friction and vibration during the rotation of the rotating shaft 211 are significantly reduced, improving the running smoothness of the entire fan motor and extending the service life of the motor and the bearing; the stable support of the rotating shaft 211 ensures that the impeller 11 can cut the air at a more accurate angle, improving the wind power output efficiency while reducing the energy loss caused by vibration.

[0057] In one embodiment, as Figures 5-7 shown, the support member 122 extends inward to form a connecting portion 124, and a first through hole 125 is provided in the middle of the connecting portion 124;

[0058] Both ends of the first bearing 126 bulge outward 1261, and an annular groove 1262 is formed in the middle position. The first bearing 126 passes through the first through hole 125, and the annular groove 1262 is sleeved and installed with the connecting platform.

[0059] Specifically, the first through hole 125 is a circular opening in the middle of the connecting portion 124, and its center line coincides with the center line of the rotating shaft 211 and the center line of the first bearing 126, for the first bearing 126 to pass through it to achieve the mechanical connection between the first bearing 126 and the air duct 12.

[0060] Both ends of the first bearing 126 bulge outward 1261, forming an annular recessed part in the middle for forming a stable fitting structure with the connecting part 124 of the air duct 12.

[0061] Through the connecting part 124, the first through hole 125, and the annular groove 1262 on the first bearing 126, a stable and delicate bearing fixing mechanism between the first bearing 126 and the air duct 12 is achieved, ensuring the accuracy of the installation position of the first bearing 126, improving the stability and load-bearing capacity of the overall structure, simplifying the assembly process at the same time, ensuring that the position of the first bearing 126 remains unchanged during long-term operation, and reducing vibration and noise.

[0062] Both ends of the first bearing 126 are outward bulges 1261, and the size of the middle annular groove 1262 needs to be precisely matched with that of the connecting part 124, which is formed by precision machining or customized molds to ensure that the fitting of the annular groove 1262 and the connecting part 124 is both tight and convenient for assembly. During installation, the first bearing 126 is passed through the first through hole 125 from one side of the air duct 12. At this time, the annular groove 1262 of the bearing is aligned with the connecting part 124, and then the annular groove 1262 and the connecting part 124 are tightly combined by applying pressure to complete the fixed installation of the bearing.

[0063] In this embodiment, through the precise installation and fixation of the first bearing 126, the vibration and noise caused by bearing looseness are reduced, and the overall running stability and service life of the fan motor are improved; through the inwardly extending connecting part 124, the effective utilization of the internal space is realized, maintaining the compact design of the fan motor, which is beneficial to reducing the product volume and adapting to more installation environments; the stable bearing fixing structure can effectively disperse the load, reduce the burden on the bearing, extend the service life of the key components of the motor, and improve the reliability of the product.

[0064] In one embodiment, as Figure 8 shown, the stator unit 22 includes: a stator body 221 and windings (not shown in the figure) wound around the stator body 221. A plurality of winding parts 222 are arranged around the inside of the stator iron, and the winding parts 222 are provided with wire grooves 223 for winding the windings;

[0065] The plurality of winding parts 222 are arranged at a certain interval.

[0066] Specifically, by arranging a plurality of spaced winding parts 222 in the stator body 221, and each winding part 222 is provided with a wire groove 223, the space is efficiently utilized to ensure that the windings can be arranged evenly and tightly, thereby generating a uniform and strong magnetic field. Such a design helps to improve the power density and efficiency of the motor, while reducing heat generation and hysteresis loss.

[0067] In one embodiment, as Figure 8 shown, the end of the winding portion 222 inside the stator body 221 encloses to form a second through hole 224 for the magnetic member 212 to pass through.

[0068] Specifically, a second through hole 224 is provided inside the stator body 221 for the magnetic member 212 in the rotor unit 21 to pass through, realizing non-contact magnetic coupling between the stator and the rotor in the motor.

[0069] The second through hole 224 enables effective alignment and interaction between the magnetic member 212 and the windings of the stator unit 22, ensuring the normal operation of the brushless motor. Through the second through hole 224, the magnetic member 212 can be accurately positioned in the magnetic field generated by the stator windings, promoting effective interaction of the magnetic fields, thereby generating torque to drive the motor to rotate. At the same time, the assembly process of the motor is simplified, and the rotor unit 21 can be easily installed inside the stator unit 22.

[0070] In one embodiment, as Figure 2 shown, the motor further includes a drive board 4, and the drive board 4 is electrically connected to one end of the stator unit 22 for receiving external instructions to control the current on the stator unit 22.

[0071] Specifically, the drive board 4 is electrically connected to one end of the stator unit 22 for realizing the response and execution of external control instructions; according to the externally input control signals (such as PWM signals, digital signals, etc.), the magnitude and direction of the current flowing into the stator windings can be accurately controlled, thereby adjusting the operating states such as the rotation speed and rotation direction of the motor to meet the requirements in different application scenarios.

[0072] Preferably, to ensure the safe and reliable electrical connection between the drive board 4 and the stator unit 22, a dedicated connector or welding method is usually adopted.

[0073] In this embodiment, the drive board 4 receives and analyzes control instructions in real time, and the motor can quickly respond to changes, realizing precise speed control and direction switching, improving the overall dynamic performance of the system; the intelligent control algorithm integrated in the drive board 4 can optimize the power utilization of the motor and reduce the ineffective power consumption. At the same time, the integrated protection mechanisms such as over-temperature protection and over-current protection can effectively prevent the motor and the drive circuit from being damaged due to abnormal conditions and extend the service life of the equipment.

[0074] In one embodiment, as Figure 1 、 Figure 2 shown, the motor further includes a housing 3 for placing the fan assembly 1 and the motor assembly 2;

[0075] The material of the housing 3 is made of elastic plastic.

[0076] Specifically, the housing 3 wraps and fixes the fan assembly 1, which is used to protect the fan assembly 1 and the motor assembly 2, isolate dust and moisture, and provide physical support. At the same time, the housing 3 also helps with noise isolation, reducing the interference of the noise generated during motor operation to the outside world and enhancing the user experience.

[0077] In one embodiment, as Figure 6 and Figure 9 shown, a positioning groove 31 is provided on the inner wall of the housing 3;

[0078] The outer shell 121 is provided with a positioning member 1211, and the fan assembly 1 and the housing 3 are positioned and installed through the positioning groove 31 and the positioning member 1211.

[0079] Specifically, by providing a pair of symmetric grooves on the inner wall surface of the housing 3, it is used to precisely cooperate with the positioning member 1211 on the outer shell 121 to ensure the accurate position of the fan assembly 1 during installation.

[0080] The positioning member 1211 includes a tenon or a positioning pin, etc., which matches the positioning groove 31 inside the housing 3 to achieve the position fixation and alignment between components, ensuring that the fan assembly 1 can quickly and accurately align with the predetermined position when installed in the housing 3, and avoiding problems such as assembly difficulties, poor operation, or performance degradation caused by installation deviation. Through this precise positioning mechanism, the assembly process can be simplified, the assembly efficiency can be improved, and at the same time, the consistency and stability between the fan assembly 1 and the motor assembly 2 can be ensured, thereby enhancing the performance and service life of the whole machine.

[0081] Embodiment 2

[0082] An embodiment of the present utility model provides a device, and the device includes the brushless fan motor described in any of the above embodiments.

[0083] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A brushless fan motor, characterized in that: The motor comprises: the motor comprises a fan assembly (1) and a motor assembly (2); The motor assembly (2) comprises a rotor unit (21) and a stator unit (22); the rotor unit (21) comprises a rotating shaft (211) and a magnetic member (212); the magnetic member (212) is sleeved and fixed on a first end (2111) of the rotating shaft (211); The fan assembly (1) comprises an impeller (11) and a wind tube (12); the second end (2112) of the rotating shaft (211) passes through the wind tube (12) and is sleeved and fixed to the impeller (11); Wherein, the impeller (11) and the rotating shaft (211) are located inside the wind tube (12).

2. The brushless fan motor according to claim 1, characterized in that: The wind tube (12) comprises a shell (121), a support member (122), and a plurality of grid members (123) arranged between the shell (121) and the support member (122).

3. The brushless fan motor according to claim 2, characterized in that: The fan assembly (1) further comprises a first bearing (126), wherein the first bearing (126) is sleeved in the middle of the rotating shaft (211) and is used for sleeve-fitting and fixed installation with the wind tube (12).

4. The brushless fan motor according to claim 3, characterized in that: The support member (122) extends inwardly to form a connecting portion (124), and a first through hole (125) is provided in the middle of the connecting portion (124); Both ends of the first bearing (126) protrude outwards, and an annular groove (1262) is formed in the middle. The first bearing (126) passes through the first through hole (125), and the annular groove (1262) is sleeved and installed with the connecting platform.

5. The brushless fan motor according to any one of claims 1 to 4, characterized in that: The stator unit (22) comprises: a stator body (221) and a winding wound on the stator body (221); a plurality of winding parts (222) are arranged around the inside of the stator body (221); and the winding parts (222) are provided with wire slots (223) for winding the winding; A plurality of the winding parts (222) are arranged at a certain interval.

6. The brushless fan motor according to claim 5, characterized in that: A second through hole (224) is formed around the end of the winding portion (222) inside the stator body (221) for the magnetic member (212) to pass through.

7. The brushless fan motor according to claim 6, characterized in that: The motor further comprises a drive board (4), wherein the drive board (4) is electrically connected to one end of the stator unit (22) and is used to receive external instructions to control the current on the stator unit (22).

8. The brushless fan motor according to any one of claims 1 to 4, characterized in that: The motor further comprises a housing (3) for accommodating the fan assembly (1) and the motor assembly (2); The shell (3) is made of elastic plastic.

9. The brushless fan motor according to any one of claims 1 to 4, characterized in that: The inner wall of the housing (3) is provided with a positioning groove (31); The housing (121) is provided with a positioning piece (1211), and the fan assembly (1) and the housing (3) are positioned and installed through the positioning groove (31) and the positioning piece (1211).

10. A device, characterized in that: The device comprises a brushless fan motor as claimed in any one of claims 1 to 9.

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