Motor direct drive type intelligent axial flow fan

Abstract

The invention discloses a motor direct drive type intelligent axial flow fan which comprises a shell assembly, a driving assembly and a rotating assembly, the driving assembly comprises a center shaft, a stator, a permanent magnet rotor, an electromagnet rotor, a first driving gear, a second driving gear and at least one driven gear, and the center shaft is installed on the shell assembly; the permanent magnet rotor, the stator and the electromagnet rotor are sequentially arranged on the center shaft in a sleeving mode, the permanent magnet rotor is sleeved with the first driving gear, the electromagnet rotor is sleeved with the second driving gear, and the driven gear is arranged between the first driving gear and the second driving gear and meshed with the first driving gear and the second driving gear. The rotating assembly is arranged outside the driving assembly and is in transmission connection with at least one driven gear. By means of the first state and the second state of the driving assembly, the functions of blade angle adjustment and radial rotation can be achieved through only one motor at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, and in particular to a motor-direct-driven intelligent axial flow fan. Background Art

[0002] A motor-driven fan is a contactless driven fan that converts electrical energy directly into mechanical energy without the need for auxiliary devices for conversion. Its energy conversion and transmission is directly achieved by electromagnetic field operation. Existing electromagnetic direct-driven fans generally have a low degree of integration, and the form and method of implementation are relatively simple. For example, the Chinese patent application with publication number CN116877461A discloses an integrated fan system, which is mainly composed of a base, a housing, a fan assembly and a drive motor. The structure of this fan is relatively simple, the blade angle is fixed and cannot be adjusted, and there is no explosion-proof and vibration-proof function, and the application has obvious limitations; secondly, a large amount of heat will be generated during the operation of the fan, and this technology does not use efficient cooling, heat dissipation structure and materials, so that excessive temperature will lead to a decrease in the performance of the fan and low operating efficiency; in addition, this technology does not set up an intelligent control system for the fan, and cannot grasp the working conditions of the fan in real time.

[0003] In response to the above technical problems, a Chinese utility model patent with publication number CN218991957U discloses a multi-blade axial flow fan blade, which is mainly composed of a mounting box and a blade. A mounting sleeve is welded on the inner surface of the mounting box, a rotating shaft is embedded on the inner surface of the mounting sleeve, a mounting block is welded on the outer surface of the rotating shaft, the blade is welded on the outer surface of the mounting block, a connecting plate is welded on the outer surface of the rotating shaft, a driven gear is welded on the outer surface of the connecting plate, a rotating frame is welded on the inner surface of the mounting box, and a rotating groove is provided on the inner surface of the rotating frame. However, this driven structure is relatively complicated, and a new mechanical structure and two or more motors are required to adjust the blade angle. It is impossible to achieve the self-adjustment of the blade angle and the radial rotation of the impeller with only one motor at the same time, and there is no intelligent integrated system, so the required angle cannot be accurately adjusted, and the working condition of the fan cannot be grasped in real time. Therefore, there is a lack of a fan that can achieve multi-functions, intelligent reliability, strong adaptability and high operating efficiency with a single motor in this field. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention proposes a motor-direct-driven intelligent axial flow fan, which mainly solves the technical problem that the prior art cannot use one motor to simultaneously achieve blade angle self-adjustment and impeller rotation functions.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: A motor-direct-driven intelligent axial flow fan, comprising: Housing components; Drive components, including: A central shaft, a stator, a permanent magnet rotor, an electromagnetic rotor, a first driving gear, a second driving gear and at least one driven gear, wherein the central shaft is mounted on a housing assembly, the permanent magnet rotor, the stator and the electromagnetic rotor are sleeved on the central shaft in sequence, the first driving gear is sleeved on the outside of the permanent magnet rotor, the second driving gear is sleeved on the outside of the electromagnetic rotor, and the driven gear is disposed between the first driving gear and the second driving gear and meshes with the first driving gear and the second driving gear respectively; A rotating assembly, disposed outside the driving assembly and drivingly connected to at least one of the driven gears; The driving assembly has a first state and a second state. When the driving assembly is in the first state, the electromagnet rotor is configured to have a polarity opposite to that of the permanent magnet rotor, so that the first driving gear and the second driving gear rotate in opposite directions, thereby driving the driven gear to rotate on its own to achieve angle adjustment of the rotating assembly; when the driving assembly is in the second state, the electromagnet rotor is configured to have a polarity identical to that of the permanent magnet rotor, so that the first driving gear and the second driving gear rotate in the same direction, thereby driving the driven gear and the following gear to achieve rotation of the rotating assembly.

[0006] In some embodiments, it also includes an adsorption component, which is arranged inside the rotating component, and the adsorption component includes a first adsorption component, and the first adsorption component includes a first adsorption component, and the first adsorption component includes an electromagnet, an iron foil, a gear bar and a ratchet, and the ratchet is sleeved on the central axis and located on the side of the first driving gear away from the driven gear, the electromagnet is sleeved on the outside of the ratchet, and the gear bar and the iron foil are sequentially sleeved on the central axis and embedded in the first driving gear.

[0007] In some embodiments, the first adsorption assembly further includes an elastic member, which is sleeved on the central shaft and has one end connected to the stator and the other end connected to the first driving gear.

[0008] In some embodiments, the adsorption assembly further includes a second adsorption assembly, the second adsorption assembly includes a second electromagnet, a second iron foil, a second gear bar and a second ratchet, the second ratchet is sleeved on the central shaft and located on the side of the second driving gear away from the driven gear, the second electromagnet is sleeved on the outside of the second ratchet, the second gear bar and the second iron foil are sleeved on the central shaft in sequence and embedded in the second driving gear.

[0009] In some embodiments, the second adsorption assembly further includes a second elastic member, which is sleeved on the central shaft and has one end connected to the stator and the other end connected to the second driving gear.

[0010] In some embodiments, the rotating assembly includes a hub, a driven shaft and blades. The hub is disposed outside the driving assembly and is rotatably connected to the central shaft. One end of the driven shaft passes through the hub and is transmission-connected to the driven gear, and the other end of the driven shaft is fixedly connected to the blades.

[0011] In some embodiments, the shell assembly includes a base, a support frame, a protective shell and an explosion-proof net. The support frame is fixed to the upper surface of the base, the protective shell is fixed to the top of the support frame, the explosion-proof net is fixed to both sides of the protective shell, and the two ends of the central axis are installed at the center of the explosion-proof nets on both sides.

[0012] In some embodiments, a noise reduction component is also included, and the noise reduction component is installed outside the protective shell.

[0013] In some embodiments, a control component is further included, and the control component includes a control box and a control device. The control box is arranged on the lower surface of the base, and the control device is arranged in the control box.

[0014] In some embodiments, a hollow structure is formed on the first driving gear, the second driving gear and the driven gear.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention designs the driving component to have a first state and a second state. When it is in the first state, the electromagnet rotor is configured to have the opposite polarity to the permanent magnet rotor so that the first driving gear and the second driving gear rotate in opposite directions, thereby driving the driven gear to rotate and realize the angle adjustment of the rotating component; when the driving component is in the second state, the electromagnet rotor is configured to have the same polarity as the permanent magnet rotor so that the first driving gear and the second driving gear rotate in the same direction, thereby driving the driven gear and the following gear to realize the rotation of the rotating component. Therefore, the present invention achieves the goal of single motor multi-function, and only one motor can be used to simultaneously realize the functions of adjusting the angle of the fan blades and driving the radial rotation of the fan blades, thereby improving the utilization of energy and the working efficiency of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a general structural diagram of one direction of the fan of the present invention; Figure 2 It is a general structural diagram of the fan of the present invention in another direction; Figure 3 is a schematic diagram of the structure of the drive assembly of the present invention; Figure 4 is an exploded view of the drive assembly of the present invention; Figure 5 It is a schematic diagram of the structure of the rotating assembly of the present invention in one direction; Figure 6 is a schematic structural diagram of the rotating assembly of the present invention in another direction; Figure 7 is a cross-sectional view of the drive assembly and the wheel hub of the present invention after installation; Figure 8 is a schematic structural diagram of one direction of the first driving gear of the present invention; Fig. 9 is a schematic structural diagram of the first driving gear in another direction of the present invention; The following are the descriptions of the reference numerals: 100, housing assembly, 110, base, 120, support frame, 130, protective shell, 140, explosion-proof net; 200, driving assembly, 210, central shaft, 220, stator, 230, permanent magnet rotor, 240, electromagnet rotor, 250, first driving gear, 260, second driving gear, 270, driven gear; 300, rotating assembly, 310, hub, 320, driven shaft, 330, blades; 400, adsorption component, 410, first adsorption component, 411, first electromagnet, 412, first iron foil, 413, first gear bar, 414, first ratchet, 415, first elastic member, 420, second adsorption component, 421, second electromagnet, 422, second iron foil, 423, second gear bar, 424, second ratchet, 425, second elastic member; 500, noise reduction component; 600. Control assembly, 610. Control box, 620. Control panel, 630. Switch. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] The present invention mainly aims at the technical problems that when existing axial flow fans realize the function of blade angle adjustment, some new mechanical structures need to be designed and two or more motors need to be used to realize it, which leads to complex fan structure and low operating efficiency. An intelligent axial flow fan with direct motor drive is proposed, which is a fan that realizes multi-function and intelligence with a single motor.

[0019] like Figures 1-2As shown, the present invention provides a motor direct-driven intelligent axial flow fan, including a housing assembly 100, a drive assembly 200 and a rotating assembly 300, the drive assembly 200 and the rotating assembly 300 are installed on the housing assembly 100, and the drive assembly 200 is arranged inside the rotating assembly 300, the drive assembly 200 is designed with a first state and a second state, the first state is used to adjust the angle of the rotating assembly 300, and the second state is used to drive the rotating assembly 300 to rotate radially.

[0020] Among them, Figures 3-4 As shown, the driving assembly 200 includes a central shaft 210, a stator 220, a permanent magnet rotor 230, an electromagnet rotor 240, a first driving gear 250, a second driving gear 260 and at least one driven gear 270. The central shaft 210 is mounted on the housing assembly 100. The permanent magnet rotor 230, the stator 220 and the electromagnet rotor 240 are sequentially sleeved on the central shaft 210. The first driving gear 250 is sleeved on the outside of the permanent magnet rotor 230. The second driving gear 260 is sleeved on the outside of the electromagnet rotor 240. The driven gear 270 is arranged between the first driving gear 250 and the second driving gear 260 and the two ends are respectively meshed with the two. The rotating assembly 300 is drivingly connected to at least one of the driven gears 270.

[0021] In the above technical solution, the electromagnetic rotor 240 is configured to have a polarity opposite to that of the permanent magnet rotor 230, so that the first driving gear 250 and the second driving gear 260 can rotate in the opposite direction, thereby driving the driven gear 270 to rotate to achieve the angle adjustment of the rotating component 300, which is the first state of the driving component 200; the electromagnetic rotor 240 is configured to have a polarity identical to that of the permanent magnet rotor 230, so that the first driving gear 250 and the second driving gear 260 can rotate in the same direction, thereby driving the driven gear 270 to follow it to achieve the rotation of the rotating component 300, which is the second state of the driving component 200. The angle adjustment function of the rotating component 300 can be achieved through the first state of the driving component 200, and the rotation function of the rotating component 300 can be achieved through the second state of the driving component 200. It can be seen that the present invention realizes the functions of angle adjustment and radial rotation simultaneously using only one motor, simplifies the fan structure, and improves the operating efficiency of the fan.

[0022] In one embodiment, the driving assembly 200 is further provided with ventilation holes and heat sinks to achieve heat dissipation.

[0023] In one embodiment, the axial flow fan further includes an adsorption component 400 , and the adsorption component 400 is disposed inside the rotating component 300 .

[0024] In one embodiment, the adsorption component 400 includes a first adsorption component 410 and a second adsorption component 420, and the first adsorption component 410 and the second adsorption component 420 are respectively used to adsorb the first driving gear 250 and the second driving gear 260 to reduce the speed of the first driving gear 250 and the second driving gear 260 to zero, thereby enabling the driving component 200 to switch between the first state and the second state.

[0025] In one embodiment, the first adsorption component 410 includes a first electromagnet 411, a first iron foil 412, a first gear bar 413 and a first ratchet 414, the first ratchet 414 is sleeved on the central shaft 210 and is located on the side of the first driving gear 250 away from the driven gear 270, the first electromagnet 411 is sleeved on the outside of the first ratchet 414, the first gear bar 413 and the first iron foil 412 are sequentially sleeved on the central shaft 210 and embedded in the first driving gear 250.

[0026] In one embodiment, the first adsorption assembly further includes a first elastic member 415 , which is sleeved on the central shaft 210 and has one end connected to the stator 220 and the other end connected to the first driving gear 250 .

[0027] In one embodiment, the second adsorption component 420 includes a second electromagnet 421, a second iron foil 422, a second gear bar 423 and a second ratchet 424. The second ratchet 424 is sleeved on the central shaft 210 and is located on the side of the second driving gear 260 away from the driven gear 270. The second electromagnet 421 is sleeved on the outside of the second ratchet 424. The second gear bar 423 and the second iron foil 422 are sequentially sleeved on the central shaft 210 and embedded in the second driving gear 260.

[0028] In one embodiment, the second adsorption assembly 420 further includes a second elastic member 425 . The second elastic member 425 is sleeved on the central shaft 210 and has one end connected to the stator 220 and the other end connected to the second driving gear 260 .

[0029] In one embodiment, if Figures 5 to 9 As shown, the rotating assembly 300 includes a hub 310, a driven shaft 320 and a blade 330. The hub 310 is arranged outside the driving assembly 200 and is rotatably connected to the central shaft 210. One end of the driven shaft 320 passes through the hub 310 and is transmission-connected to the driven gear 270. The other end of the driven shaft 320 is fixedly connected to the blade 330.

[0030] In one of the embodiments, the blade 330 is made of aluminum alloy, which reduces density, weight, and cost while enhancing the ability to bear the aerodynamic load of the wind blade, thereby reducing the fatigue load of the blade 330 and improving fatigue life; the first driving gear 250, the second driving gear 260 and the driven gear 270 are all formed with a hollow structure for material reduction processing. Without affecting the original stress structure of the mechanical structure, the gear structure is hollowed out to maximize material reduction, and lightweight processing is performed under the premise of ensuring the safety and stability of the fan operation.

[0031] In one embodiment, the blade 330 shown is treated with polyurethane coating for corrosion protection. The water-based polyurethane anti-corrosion coating forms a dense coating after curing on the surface of the coated object. This coating can effectively isolate the substrate and the corrosive environment, and prevent water, oxygen and other substances that may cause corrosion from contacting the protected surface. The polyurethane material itself has good chemical resistance and can resist the erosion of various chemical substances, which makes it perform well in chemical corrosion environments. At the same time, the polyurethane material also has good strain resistance, and can maintain the continuity and protection of the coating even when the object is deformed; the mechanical structure inside the hub is treated with Dacromet technology for corrosion protection. The Dacromet coating is mainly composed of metal zinc sheets, aluminum sheets, chromic acid, etc. These materials form a chemically inert structure in the coating, which can effectively resist the erosion of various chemical substances. The thin layer formed by the coating on the metal substrate can serve as a physical barrier to isolate oxygen and moisture, reduce their direct contact with the metal surface, and thus slow down the corrosion process. Finally, zinc and aluminum act as sacrificial anodes, and oxidation reactions precede iron in the corrosion process, thereby protecting the iron substrate from corrosion. Therefore, the working state of the wind turbine in offshore humid air, high salt and other environments is greatly improved.

[0032] In one embodiment, the shell assembly 100 includes a base 110, a support frame 120, a protective shell 130 and an explosion-proof net 140, the support frame 120 is fixed to the upper surface of the base 110, the protective shell 130 is fixed to the top of the support frame 120, the explosion-proof net 140 is fixed to both sides of the protective shell 130, and both ends of the central axis 210 are installed at the center of the explosion-proof net 140 on both sides.

[0033] In one of the embodiments, the axial flow fan further includes a noise reduction component 500 , and the noise reduction component 500 is installed outside the protective shell 130 .

[0034] In one embodiment, the noise reduction component 500 is a noise reduction sound. The noise reduction sound first receives the noise generated by the rotation of the fan with a microphone through a computer algorithm, and then uses the internal chip of the speaker to generate sound waves opposite to the noise to offset the fan noise, block the propagation of noise in the medium, and achieve the purpose of reducing the fan noise.

[0035] In one embodiment, the axial flow fan further includes a control assembly 600 , and the control assembly 600 includes a control box 610 and a control device. The control box 610 is disposed on the lower surface of the base 110 , and the control device is disposed in the control box 610 .

[0036] In one embodiment, the control device includes a control panel 620 and a switch 630, and the control device also includes remote management and data acquisition. The remote management relies on a host computer and uses WinCC industrial automation software to realize remote centralized management, real-time monitoring and fault alarm mechanism; the control panel 620 uses a programmable logic controller PLC to accurately control the operating status of the field equipment through input and output modules; the data acquisition captures and timely collects and processes various signals through high-sensitivity sensors, and the remote monitoring system has a strong fault diagnosis capability, which can analyze the equipment operation data in real time and accurately determine potential safety hazards and fault points. Once a fault is detected, the system will immediately display the fault information on the host computer and trigger the alarm mechanism, effectively improving the reliability of equipment operation; the design of the mechanical structure ensures high-precision coordination between mechanical parts through computer algorithms, and at the same time, through algorithm control, the highly integrated system of motor blades realizes smooth conversion between multiple motion modes; the adjustment of the axial motor accurately controls the speed of the rotor group through computer algorithms, thereby realizing accurate adjustment of the axial motor power and accurate control of opening or closing, thereby realizing highly intelligent operation of the fan, and real-time monitoring and intelligent adjustment of the running status of the motor fan.

[0037] The working principle of the present invention is as follows: Turn on the switch 630, and first adjust the angle of the blade 330: AC is passed through the stator 220, and AC is also passed through the electromagnet rotor 240. At this time, the adsorption component 400 is not energized. When a sinusoidal current is passed through the electromagnet rotor 240, the polarities of the electromagnet rotor 240 and the permanent magnet rotor 230 are set to be opposite, so that the electromagnet rotor 240 and the permanent magnet rotor 230 rotate in opposite directions, thereby driving the first driving gear 250 and the second driving gear 260 to rotate in opposite directions, and the driven gear 270 meshing with the first driving gear 250 and the second driving gear 260 rotates, thereby driving the blade 330 to rotate through the driven shaft 320 to adjust the angle; When the blade 330 rotates to a desired angle, the first electromagnet 411 and the second electromagnet 421 are energized to adsorb the first iron foil 412 and the second iron foil 422 on the upper surfaces of the first driving gear 250 and the second driving wheel 260, and at the same time overcome the elastic force of the first elastic member 415 and the second elastic member 425 to do work. At this time, the stator 220 coil is not energized, the first gear bar 413 on the upper surface of the first driving gear 250 is meshed with the first ratchet 414, and the second gear bar 423 on the upper surface of the second driving gear 260 is meshed with the second ratchet 424. Due to the unidirectional rotation characteristics of the first ratchet 414 and the second ratchet 424, the angular velocity of the first driving gear 250 and the second driving gear 260 can be reduced. When the angular velocity of the first driving gear 250 and the second driving gear 260 is reduced to zero, the driving assembly 200 is changed from the first state to the second state, and the function of driving the blade 330 to rotate radially is performed; Furthermore, a Hall sensor is used to accurately monitor the rotor positions of the permanent magnet rotor 230 and the electromagnet rotor 240. When different magnetic poles of the rotor approach the Hall sensor, the Hall sensor will output a corresponding position signal according to the change of the magnetic field. By continuously monitoring the change of the potential difference generated during the movement of the rotor, the rotation speed of the rotor can be accurately calculated. During the operation of the fan, once the Hall sensor detects that the angular velocity of the first driving gear 250 and the second driving gear 260 is reduced to zero, the system will trigger the electromagnet rotor 240 to pass cosine alternating current, so that the electromagnet rotor 240 and the permanent magnet rotor 230 have the same polarity. Then, the rotation speed of the permanent magnet rotor 230 is measured again by the Hall sensor, and the magnetic field strength of the permanent magnet rotor 230 is accurately calculated in combination with the size of the alternating current in the stator coil. After receiving these signals, the controller will process and issue instructions to adjust the current size in the first electromagnet 411 and the second electromagnet 421 coils. In this process, the change of current will cause the intensity and direction of the magnetic field generated by the first electromagnet 411 and the second electromagnet 421 to change, thereby generating an attractive force or repulsive force on the rotor, so that the rotor moves to a predetermined position or changes its motion state. On this basis, the system adjusts the magnetic field size of the first electromagnet 411 and the second electromagnet 421 to make them completely symmetrical with the permanent magnet rotor 230. The first electromagnet 411 and the second electromagnet 421 are powered off, and the first driving gear 250 re-engages with the driven gear 270 under the elastic force of the first elastic member 415, and the second driving gear 260 re-engages with the driven gear 270 under the elastic force of the second elastic member 425. At this time, the stator coil is again connected with alternating current, so that the permanent magnet rotor 230 and the first driving gear 250 and the second driving gear 260 where the electromagnetic rotor 240 is located rotate at the same angular velocity and in the same direction. In this process, the driven gear 270 is tightly fixed between the first driving gear 250 and the second driving gear 260, and the three reach a relatively static state, thereby realizing the smooth operation of the fan.

[0038] In summary, the motor-direct-driven intelligent axial flow fan provided by the present invention has the following beneficial effects: 1. The present invention realizes the functions of blade angle adjustment and blade radial rotation with only one motor, the whole structure is simple and reliable, and the operation efficiency of the fan is improved; 2. The present invention realizes intelligent control of the fan, solving the problems of fast fan loss, high operating noise, slow heat dissipation and low intelligence; 3. The present invention adopts blades made of aluminum alloy, which improves the overall strength of the blades while reducing the weight, reduces the fatigue load of the blades, and increases the service life of the blades; 4. The present invention solves the problems of high noise, vibration and heat during the operation of the fan through the overall stable structure, ventilation holes and heat sinks inside the motor, meets the explosion-proof requirements, and at the same time, achieves lightweight of the fan and reduces fan loss, thereby extending its life while ensuring the strength and safety of the fan.

[0039] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A motor-direct-driven intelligent axial flow fan, characterized in that: include: Housing components; Drive components, including: A central shaft, a stator, a permanent magnet rotor, an electromagnetic rotor, a first driving gear, a second driving gear and at least one driven gear, wherein the central shaft is mounted on a housing assembly, the permanent magnet rotor, the stator and the electromagnetic rotor are sleeved on the central shaft in sequence, the first driving gear is sleeved on the outside of the permanent magnet rotor, the second driving gear is sleeved on the outside of the electromagnetic rotor, and the driven gear is disposed between the first driving gear and the second driving gear and meshes with the first driving gear and the second driving gear respectively; A rotating assembly, disposed outside the driving assembly and drivingly connected to at least one of the driven gears; The driving assembly has a first state and a second state. When the driving assembly is in the first state, the electromagnet rotor is configured to have a polarity opposite to that of the permanent magnet rotor, so that the first driving gear and the second driving gear rotate in opposite directions, thereby driving the driven gear to rotate on its own to achieve angle adjustment of the rotating assembly; when the driving assembly is in the second state, the electromagnet rotor is configured to have a polarity identical to that of the permanent magnet rotor, so that the first driving gear and the second driving gear rotate in the same direction, thereby driving the driven gear and the following gear to achieve rotation of the rotating assembly.

2. The motor-direct-driven intelligent axial flow fan according to claim 1 is characterized in that: It also includes an adsorption component, which is arranged inside the rotating component and includes: The first adsorption component includes a first electromagnet, a first iron foil, a first gear bar and a first ratchet, wherein the first ratchet is sleeved on the central shaft and located on a side of the first driving gear away from the driven gear, the first electromagnet is sleeved on the outside of the first ratchet, and the first gear bar and the first iron foil are sequentially sleeved on the central shaft and embedded in the first driving gear.

3. The motor-direct-driven intelligent axial flow fan according to claim 2 is characterized in that: The first adsorption assembly also includes a first elastic member, which is sleeved on the central shaft and has one end connected to the stator and the other end connected to the first driving gear.

4. The motor-direct-driven intelligent axial flow fan according to claim 3 is characterized in that: The adsorption assembly further includes a second adsorption assembly, and the second adsorption assembly includes: A second electromagnet, a second iron foil, a second gear bar and a second ratchet, wherein the second ratchet is sleeved on the central shaft and located on a side of the second driving gear away from the driven gear, the second electromagnet is sleeved on the outside of the second ratchet, and the second gear bar and the second iron foil are sleeved on the central shaft in sequence and embedded in the inside of the second driving gear.

5. The motor-direct-driven intelligent axial flow fan according to claim 4, characterized in that: The second adsorption assembly further includes a second elastic member, which is sleeved on the central shaft and has one end connected to the stator and the other end connected to the second driving gear.

6. The motor-direct-driven intelligent axial flow fan according to claim 1 is characterized in that: The rotating assembly includes a hub, a driven shaft and blades. The hub is arranged outside the driving assembly and is rotatably connected to the central shaft. One end of the driven shaft passes through the hub and is transmission-connected to the driven gear, and the other end of the driven shaft is fixedly connected to the blades.

7. The motor-direct-driven intelligent axial flow fan according to claim 1, characterized in that: The shell assembly includes a base, a support frame, a protective shell and an explosion-proof net. The support frame is fixed to the upper surface of the base, the protective shell is fixed to the top of the support frame, the explosion-proof net is fixed to both sides of the protective shell, and the two ends of the central axis are installed in the center of the explosion-proof nets on both sides.

8. The motor-direct-driven intelligent axial flow fan according to claim 7 is characterized in that: It also includes a noise reduction component, which is installed outside the protective shell.

9. The motor-direct-driven intelligent axial flow fan according to claim 1, characterized in that: It also includes a control component, which includes a control box and a control device. The control box is arranged on the lower surface of the base, and the control device is arranged in the control box.

10. The motor-direct-driven intelligent axial flow fan according to claim 1, characterized in that: The first driving gear, the second driving gear and the driven gear are all formed with a hollow structure.

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