Motor fan system with dynamic airflow adjustment and integrated heat dissipation structure and motor

Abstract

The invention provides a motor fan system with a dynamic airflow adjustment and integrated heat dissipation structure. The motor fan system comprises a centrifugal fan; the centrifugal fan is arranged on the inner side of the motor end cover, an impeller of the centrifugal fan is in transmission connection with a rotating shaft of the motor, and when the rotating shaft of the motor rotates, the impeller rotates along with the rotating shaft of the motor; an inlet of the centrifugal fan faces a stator and rotor assembly in the motor, and guide vanes are arranged on the motor end cover and on the periphery of the centrifugal fan in the circumferential direction in a grouped mode. The guide vanes are evenly distributed in the circumferential direction of the centrifugal fan, and the positions of the guide vanes can be adjusted. The guide vane is integrally arranged on the motor end cover, the closed flow channel is formed between the end cover and the guide vane, airflow leakage loss is reduced, it is ensured that airflow intensively scours a heat dissipation area, efficient heat dissipation is achieved, the position of the guide vane can be adjusted according to needs, and then the airflow path can be dynamically optimized according to air volume fluctuation or load change; the airflow redundancy is reduced and the energy consumption is reduced in low load, and the airflow velocity is increased in high load to avoid local overheating.

Description

Technical Field

[0001] The present invention relates to a heat dissipation technology for a motor, and in particular to a motor fan system and a motor with both dynamic airflow regulation and an integrated heat dissipation structure. Background Art

[0002] If the heat generated during motor operation is not dissipated promptly, it will accelerate the aging of the insulation material and cause permanent damage such as winding short circuits and ground faults. Furthermore, poor heat dissipation will cause the internal temperature of the motor to continue to rise, forming a vicious cycle of "temperature rise - efficiency reduction - increased heat generation." Effective heat dissipation can maintain the motor's operation within a reasonable temperature range and reduce the additional energy loss caused by high temperatures. The motor cooling system is a core link that cannot be ignored in motor design and operation. Traditional motor cooling systems mostly use independent centrifugal fan structures, which have the following defects: 1) Structural Redundancy: The outlet guide vanes and motor end cover of a centrifugal fan are typically designed as separate components. This separate structure hinders the coordinated heat dissipation design of the guide vanes and end cover. The end cover surface relies solely on natural convection, resulting in large airflow losses, low heat dissipation efficiency, large space occupation, and high manufacturing costs. Furthermore, the traditional guide vane angle is fixed, making it impossible to dynamically optimize the airflow path based on air volume fluctuations or load changes. Airflow redundancy at low loads leads to inflated energy consumption, while limited flow rate at high loads causes localized overheating. Fixed guide vane configurations are difficult to adapt to multiple scenarios. Therefore, an integrated design with adjustable and removable guide vanes and end covers has become an inevitable choice for improving the reliability and cost-effectiveness of fan systems.

[0003] 2) Deficiencies in the existing fan guide vane design: Current fan systems mostly use a traditional smooth guide vane structure, which has a single and passive airflow control method, leading to the following problems: uneven airflow distribution. When high-speed airflow flows through the guide vane, it is easy to separate on the surface due to the pressure gradient, forming a turbulent zone. The airflow velocity near the leading edge of the guide vane is higher, while the flow velocity in the trailing edge and end cover area drops significantly, resulting in an unbalanced distribution of heat dissipation capacity; the flow resistance and noise are prominent: the separated airflow causes large-scale turbulence, increasing flow energy loss.

[0004] Alleviating these issues by simply increasing the area of the guide vanes or fan power would not only take up equipment space and increase noise pollution, but would also significantly increase operating costs, hindering the energy efficiency optimization and miniaturization of high-power density motors. Therefore, structural innovation is urgently needed to break through the performance bottleneck of traditional cooling systems and improve the overall efficiency of fan systems. Summary of the Invention

[0005] The present invention provides a motor-blower system with both dynamic airflow regulation and an integrated heat dissipation structure, as well as a motor employing the same. The present invention integrates guide vanes onto the motor end cap, forming a closed flow channel between the end cap and the guide vanes. This reduces airflow leakage losses, ensures that airflow concentrates on the heat dissipation area, and achieves efficient heat dissipation. The position of the guide vanes can be adjusted as needed, dynamically optimizing the airflow path based on air volume fluctuations or load changes. This reduces airflow redundancy to reduce energy consumption under low load conditions and increases airflow velocity to avoid local overheating under high load conditions, thus adapting to a wider range of operating conditions.

[0006] For the fan system, the technical solution of this application is as follows: A motor-fan system with both dynamic airflow regulation and integrated heat dissipation structure includes a centrifugal fan; the centrifugal fan is arranged on the inner side of the motor end cover, and the impeller of the centrifugal fan is connected to the rotating shaft of the motor. When the rotating shaft of the motor rotates, the impeller rotates with the rotating shaft of the motor; the inlet of the centrifugal fan faces the stator and rotor assembly inside the motor, and guide vanes are provided in groups along the circumferential direction on the outer periphery of the centrifugal fan on the motor end cover; the guide vanes are evenly distributed in the circumferential direction of the centrifugal fan and their positions can be adjusted.

[0007] Compared with the prior art, in the motor-fan system of the present invention having both dynamic airflow regulation and integrated heat dissipation structure, the guide vanes are evenly distributed in the circumferential direction of the centrifugal fan and can be adjusted in position, so that the position of the guide vanes can be adjusted as needed, and then the airflow path can be dynamically optimized according to air volume fluctuations or load changes, reducing airflow redundancy to reduce energy consumption at low loads, and increasing airflow velocity at high loads to avoid local overheating, thereby adapting to more working conditions; in addition, in the motor-fan system of the present invention having both dynamic airflow regulation and integrated heat dissipation structure, the guide vanes are integrated on the motor end cover, and a closed flow channel is formed between the end cover and the guide vanes, which reduces airflow leakage losses and ensures that the airflow concentrates on flushing the heat dissipation area to achieve efficient heat dissipation.

[0008] As an optimization solution, in the aforementioned motor-fan system with both dynamic airflow regulation and an integrated heat dissipation structure, a guide vane mounting base is provided on the inner side of the motor end cover. The guide vane mounting base can be adjusted in circumferential position by rotation; the guide vanes are mounted on the guide vane mounting base. Thus, the guide vane position can be adjusted by adjusting the circumferential position of the guide vane mounting base, making operation easier.

[0009] As an optimization solution, in the aforementioned motor-fan system with both dynamic airflow regulation and an integrated heat dissipation structure, the guide vanes are detachably connected to the guide vane mounting base. This detachable connection allows for replacement of guide vanes of varying specifications to suit varying needs, and the guide vanes can be quickly removed for cleaning.

[0010] As an optimization solution, in the aforementioned motor-fan system with both dynamic airflow regulation and an integrated heat dissipation structure, the guide vane includes a mounting base and a guide vane body disposed on the mounting base; the guide vane is connected to the mounting base via the mounting base. This structural design of the guide vane provides good structural stability and ease of installation.

[0011] As an optimization solution, in the aforementioned motor-fan system with both dynamic airflow regulation and integrated heat dissipation structure, the guide vane body is streamlined. The streamlined design of the guide vane body can reduce flow resistance, thereby improving heat dissipation efficiency and reducing energy consumption.

[0012] As an optimization solution, in the aforementioned motor-fan system with both dynamic airflow regulation and an integrated heat dissipation structure, the guide vane mounting base is provided with a dovetail groove; the assembly base is shaped to match the dovetail groove; and the assembly base is inserted into the dovetail groove. The dovetail groove on the guide vane mounting base provides a reliable position limit for the guide vane assembly base and facilitates installation of the guide vane.

[0013] As an optimization solution, in the aforementioned motor-fan system with both dynamic airflow regulation and an integrated heat dissipation structure, the guide vane mounting base is bolted to the motor end cover. Bolting the guide vane mounting base to the motor end cover is highly reliable and easy to implement.

[0014] As an optimization solution, in the aforementioned motor-fan system with both dynamic airflow regulation and integrated heat dissipation, the guide vane mounting base is provided with bolt mounting holes, and correspondingly, the motor end cover is provided with a set of circumferentially distributed threaded holes. This structure is easy to implement and facilitates adjustment of the circumferential position.

[0015] As an optimization solution, in the aforementioned motor-fan system with both dynamic airflow regulation and integrated heat dissipation structure, a serrated structure is provided on the windward surface of the guide vane, and the tooth grooves of the serrated structure are distributed along the guide direction of the guide vane to form a bionic vortex generator. The surface of bird feathers has tiny protrusions and groove structures, which can delay airflow separation and reduce resistance by inducing local vortices during flight. Drawing on the vortex control mechanism of bird feathers in nature, the present invention forms a bionic vortex generator by designing a serrated structure on the surface of the guide vane, which can actively control boundary layer flow and reduce energy loss. The serrated protrusions that form the serrated structure are evenly distributed on the windward surface of the guide vane, covering areas with high risk of airflow separation. When high-speed airflow flows through the guide vane, it is easy to separate on the surface due to the pressure gradient, forming a turbulent area. The serrated protrusions induce tiny vortices, injecting high-momentum fluid into the boundary layer, delaying the backward movement of the separation point, and reducing flow resistance. The violent pulsation of the separated airflow is the main source of noise. The vortex generator breaks up large-scale turbulence into small-scale vortices, reducing flow resistance, improving heat dissipation capacity, and reducing noise.

[0016] For the motor, the technical solution of the present invention is as follows: A motor adopts the motor fan system with dynamic airflow regulation and integrated heat dissipation structure of the present invention.

[0017] Compared with the prior art, the motor of the present invention adopts the aforementioned motor-blower system of the present invention that has both dynamic airflow regulation and integrated heat dissipation structure. In the motor-blower system, the guide vanes are evenly distributed in the circumferential direction of the centrifugal fan and can be adjusted in position, so that the position of the guide vanes can be adjusted as needed, and the airflow path can be dynamically optimized according to air volume fluctuations or load changes. At low loads, airflow redundancy is reduced to reduce energy consumption, and at high loads, the airflow velocity is increased to avoid local overheating, thereby being able to adapt to more working conditions. In addition, the guide vanes are integrated on the motor end cover, and a closed flow channel is formed between the end cover and the guide vanes, which reduces airflow leakage losses and ensures that the airflow is concentrated on the heat dissipation area to achieve efficient heat dissipation. In addition, a serrated structure is provided on the guide vanes to form a bionic vortex generator, which can further improve the heat dissipation capacity and reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a motor-fan system with both dynamic airflow regulation and integrated heat dissipation structure according to an embodiment of the present application; Figure 2 This is a schematic diagram of the integrated structure of the adjustable guide vanes and end cover of the centrifugal fan of the present invention; Figure 3 Schematic diagram of the guide vane vortex generator design structure (guide vane) of the present invention; Figure 4 This is a schematic diagram of the gas flow principle of the centrifugal fan and guide vanes of the present invention.

[0019] The markings in the accompanying drawings are as follows: 1- centrifugal fan, 101- impeller; 2- guide vane, 201- serrated structure, 202- guide vane body, 203- assembly base plate; 3- guide vane mounting base plate, 301- dovetail groove; 4- motor end cover. DETAILED DESCRIPTION

[0020] The present invention is further described below with reference to the accompanying drawings and examples, but is not intended to limit the present invention. Any details not described in the following examples are common technical knowledge in the art.

[0021] Example (see Figure 1-4 ): This embodiment provides a motor that adopts the motor-fan system with both dynamic airflow regulation and integrated heat dissipation structure of the present invention.

[0022] In this embodiment, a motor-fan system with both dynamic airflow regulation and integrated heat dissipation structure is characterized in that it includes a centrifugal fan 1; the centrifugal fan 1 is arranged on the inner side of the motor end cover 4, and the impeller 101 of the centrifugal fan 1 is connected to the motor shaft in a transmission manner. When the motor shaft rotates, the impeller 101 rotates with the motor shaft; the inlet of the centrifugal fan 1 faces the stator and rotor assembly inside the motor, and the motor end cover 4 is provided with guide vanes 2 in groups along the circumference of the centrifugal fan 1; the guide vanes 2 are evenly distributed in the circumference of the centrifugal fan 1 and can be adjusted in position. Since the guide vanes 2 can be adjusted in position in the circumferential direction, they can be adjusted to a suitable position according to different working conditions, avoiding the situation where airflow redundancy at low load causes an increase in energy consumption, and flow velocity limitation at high load causes local overheating.

[0023] In this embodiment, a guide vane mounting base plate 3 is provided on the inner side of the motor end cover 4. The guide vane mounting base plate 3 can be adjusted in the circumferential direction by rotation. The guide vanes 2 are mounted on the guide vane mounting base plate 3. To adjust the position of the guide vanes 2, simply rotate the guide vane mounting base plate 3 to the appropriate position and then secure it.

[0024] In the embodiment, the guide vanes 2 are detachably connected to the guide vane mounting base 3. Thus, the guide vanes 2 can be removed for cleaning, or replaced with guide vanes 2 of different specifications as needed.

[0025] In the embodiment, the guide vane 2 includes an assembly base plate 203 and a guide vane body 202 disposed on the assembly base plate 203. The guide vane 2 is connected to the mounting base plate 3 via the assembly base plate 203. The provision of the assembly base plate 203 makes the connection structure stable and reliable.

[0026] In an embodiment, the guide vane body 202 is streamlined. The streamlined design makes the guide vane 2 have low wind resistance.

[0027] In the embodiment, the guide vane mounting base plate 3 is provided with a dovetail groove 301; the shape of the assembly base plate 203 is adapted to the dovetail groove 301; and the assembly base plate 203 is inserted into the dovetail groove 301. Thus, the guide vane 2 can be installed by simply inserting the assembly base plate 203 into the dovetail groove 301.

[0028] In this embodiment, the guide vane mounting base 3 is secured to the motor end cover 4 via bolts. The guide vane mounting base 3 is provided with bolt mounting holes, and correspondingly, the motor end cover 4 is provided with a set of threaded holes distributed circumferentially. To adjust the circumferential position of the guide vanes 2, the bolts are first loosened, the guide vane mounting base 3 is rotated a certain angle, and then the bolts are re-tightened. Specifically, 36 threaded holes are evenly distributed on the motor end cover, and the minimum angle at which the guide vanes 2 can be adjusted is 10°.

[0029] In the embodiment, a sawtooth structure 201 is provided on the windward surface of the guide vane 2. The tooth grooves of the sawtooth structure 201 are distributed along the guide direction of the guide vane 2 to form a bionic vortex generator. When in operation, the bionic vortex generator further improves the heat dissipation capacity and reduces noise.

[0030] Working method:

[0031] (1) System startup: The motor drives the centrifugal fan to rotate, and the airflow is accelerated by the impeller and enters the guide vane flow channel. The sawtooth structure of the bionic vortex generator actively regulates the boundary layer flow, suppresses the generation of large-scale turbulence, and reduces noise and energy loss.

[0032] (2) After passing through the guide vane flow channel, the high-speed airflow is directed along the inner surface of the end cover, removing the heat from the motor. The integrated design of the guide vane and end cover shortens the airflow path and reduces flow losses.

[0033] The above general description of the invention and the description of its specific embodiments involved in this application should not be construed as limiting the technical solutions of the invention. Based on the disclosure of this application, those skilled in the art may, without violating the constituent elements of the invention involved, add to, subtract from, or combine the disclosed technical features in the above general description and / or specific embodiments (including examples) to form other technical solutions within the scope of protection of this application.

Claims

1. A motor-fan system with dynamic airflow regulation and integrated heat dissipation structure, characterized by: The invention comprises a centrifugal fan (1); the centrifugal fan (1) is arranged on the inner side of a motor end cover (4), and the impeller (101) of the centrifugal fan (1) is connected to the rotating shaft of the motor in a transmission manner. When the rotating shaft of the motor rotates, the impeller (101) rotates together with the rotating shaft of the motor; the inlet of the centrifugal fan (1) faces the stator and rotor assembly inside the motor, and guide vanes (2) are arranged in groups along the circumferential direction on the outer periphery of the centrifugal fan (1) on the motor end cover (4); the guide vanes (2) are evenly distributed in the circumferential direction of the centrifugal fan (1) and their positions can be adjusted.

2. The motor-fan system with dynamic airflow regulation and integrated heat dissipation structure according to claim 1, characterized in that: A guide vane mounting base plate (3) is provided on the inner side of the motor end cover (4); the guide vane mounting base plate (3) can be adjusted in circumferential direction by rotation; and the guide vane (2) is mounted on the guide vane mounting base plate (3).

3. The motor-fan system with dynamic airflow regulation and integrated heat dissipation structure according to claim 1, characterized in that: The guide vane (2) is detachably connected to the guide vane mounting base plate (3).

4. The motor-fan system with dynamic airflow regulation and integrated heat dissipation structure according to claim 3 is characterized in that: The guide vane (2) comprises an assembly base plate (203) and a guide vane body (202) arranged on the assembly base plate (203); the guide vane (2) is connected to the mounting base plate (3) via the assembly base plate (203).

5. The motor-blower system with dynamic airflow regulation and integrated heat dissipation structure according to claim 4, characterized in that: The guide vane body (202) is streamlined.

6. The motor-blower system with dynamic airflow regulation and integrated heat dissipation structure according to claim 4, characterized in that: The guide vane mounting base plate (3) is provided with a dovetail groove (301); the shape of the assembly base plate (203) is adapted to the dovetail groove (301); and the assembly base plate (203) is inserted into the dovetail groove (301).

7. The motor-blower system with dynamic airflow regulation and integrated heat dissipation structure according to claim 2, characterized in that: The guide vane mounting base plate (3) is fixed to the motor end cover (4) by means of bolts.

8. The motor-fan system with dynamic airflow regulation and integrated heat dissipation structure according to claim 7, characterized in that: The guide vane mounting base plate (3) is provided with bolt mounting holes, and correspondingly, the motor end cover (4) is provided with a group of threaded holes distributed along the circumferential direction.

9. The motor-fan system with dynamic airflow regulation and integrated heat dissipation structure according to any one of claims 1 to 8, characterized in that: A sawtooth structure (201) is provided on the windward surface of the guide vane (2), and the tooth grooves of the sawtooth structure (201) are distributed along the flow guiding direction of the guide vane (2), forming a bionic vortex generator.

10. A motor, characterized in that: The motor-fan system with dynamic airflow regulation and integrated heat dissipation structure as claimed in claim 1 is adopted.

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