Self-balancing fan and balancing method

Abstract

The present application discloses a self-balancing fan and a balancing method, wherein the fan comprises a fan housing, a rotor device, a stator device, a blade device, and a blade balancing device; the blade balancing device comprises an iron powder storage mechanism, iron powder, an electromagnet mechanism, and a strain gauge sensor; in the balancing method, when the vibration frequency of one side of the blade device is greater than a maximum preset vibration frequency, the strain gauge sensor at the corresponding position will detect the abnormal vibration and trigger the corresponding electromagnet mechanism to start, and the electromagnet mechanism will attract the iron powder toward the vibration area through electromagnetic force, so that the weight of the vibration area is increased to dynamically balance the unbalanced state during rotation and reduce vibration; the present application effectively balances the centrifugal imbalance of the blade device during rotation by real-time monitoring and adjusting the iron powder distribution, reduces the noise and wear caused by vibration, and thus improves the operating stability and service life of the fan.

Description

Technical Field

[0001] The present application relates to the technical field of fans, and in particular to a self-balancing fan and a balancing method. Background Art

[0002] In modern industrial and agricultural applications, cooling fans are widely used in environments and equipment that require ventilation and heat dissipation, such as machinery and equipment, greenhouse planting, high and low voltage electrical cabinets, and energy storage cabinet battery modules; however, with the long-term use of the fan, the fan blades will become unbalanced. This imbalance is usually caused by manufacturing errors, material fatigue or external damage, causing the fan blades to generate uneven centrifugal force and induce vibration when rotating; these vibrations not only generate noise and affect the comfort of the surrounding environment, but also increase the wear of the fan blades, thereby shortening the service life of the fan and reducing the reliability of the fan in ventilation and heat dissipation. Summary of the invention

[0003] In order to improve the defect of a heat dissipation fan that causes blade vibration due to unbalanced rotation, thereby generating noise and wear, the present application provides a self-balancing fan and a balancing method.

[0004] The present application provides a self-balancing fan and a balancing method using the following technical solutions:

[0005] A self-balancing fan comprises a fan housing, a rotor device inserted in the fan housing and rotatably connected to the fan housing, a stator device fixedly connected to the fan housing and sleeved on the outside of the rotor device, a blade device connected to the rotor device and movably inserted in the fan housing, and a blade balancing device connected to the blade device;

[0006] The fan blade balancing device includes an iron powder storage mechanism connected to the outer side wall of the fan blade device, iron powder movably arranged inside the iron powder storage mechanism, an electromagnet mechanism connected to the inner side wall of the fan blade device and arranged in an array along the circumference of the fan blade device, and a strain gauge sensor connected to the fan blade device and electrically connected to the electromagnet mechanism; the strain gauge sensor corresponds to the electromagnet mechanism one by one and is arranged in an array along the circumference of the fan blade device;

[0007] When the vibration frequency of one side of the fan blade device is greater than the maximum preset vibration frequency, the strain gauge sensor on one side of the fan blade device triggers the corresponding electromagnet mechanism to start and attract the iron powder.

[0008] By adopting the above technical solution, the stator device is fixed on the fan casing and is arranged around the outer side of the rotor device to form an electromagnetic action area to drive the rotor device; the fan blade device is connected to the rotor device to drive the airflow as the rotor device rotates; the fan blade balancing device is used to adjust the unbalanced state of the fan blade. When the vibration frequency of one side of the fan blade device is greater than the maximum preset vibration frequency, the strain gauge sensor at the corresponding position will detect the abnormal vibration and trigger the corresponding electromagnet mechanism to start. The electromagnet mechanism attracts iron powder to the vibration area through electromagnetic force, so that the weight of the vibration area is increased to dynamically balance the unbalanced state during rotation and reduce vibration. The present application effectively balances the centrifugal imbalance of the fan blade device during rotation by real-time monitoring and adjusting the iron powder distribution, reduces the noise and wear caused by vibration, and thus improves the operating stability and service life of the fan.

[0009] Preferably, the fan blade device comprises a fan blade base connected to the rotor device, a fan blade side wall connected to the side edge of the fan blade base and sleeved on the circumference of the stator device, and a fan blade body connected to the fan blade side wall and arranged in an array along the circumference of the fan blade side wall;

[0010] The iron powder storage mechanism is connected to the outer side wall of the fan blade base, the electromagnet mechanism is connected to the inner side wall of the fan blade base, and the strain gauge sensor is connected to the outer side wall of the fan blade side wall.

[0011] By adopting the above-mentioned technical scheme, the iron powder storage mechanism is connected to the outer wall of the fan blade base to form a storage position for the iron powder; the electromagnet mechanism is used to attract or release the iron powder and adjust the distribution of the iron powder to balance the vibration; the strain gauge sensor is fixed on the outer wall of the fan blade side wall to monitor the vibration state in real time and trigger the corresponding electromagnet mechanism when the vibration exceeds the maximum preset vibration frequency; during the rotation process of the present application, when the vibration frequency on one side of the fan blade body exceeds the set value, the strain gauge sensor detects the abnormality and triggers the corresponding electromagnet mechanism to balance the uneven centrifugal force in the area by attracting iron powder, thereby reducing vibration, reducing noise and wear, extending the life of the fan and improving its stability and reliability.

[0012] Preferably, the iron powder storage mechanism is provided with a first annular compartment, a second annular compartment mounted on the circumference of the first annular compartment, and a third annular compartment mounted on the circumference of the second annular compartment; the iron powder is respectively arranged in the first annular compartment, the second annular compartment, and the third annular compartment.

[0013] By adopting the above technical scheme, the iron powder storage mechanism includes three concentric annular compartments, namely the first annular compartment, the second annular compartment and the third annular compartment, and the third annular compartment, the second annular compartment and the first annular compartment are arranged in sequence, so as to form a layered iron powder storage space in the structure; the iron powder is filled in the first annular compartment, the second annular compartment and the third annular compartment respectively. The present application separates the iron powder so that the iron powder can bear the centrifugal force more evenly, thereby avoiding imbalance caused by concentrated accumulation of iron powder during rotation; during the rotation of the fan blade device, the iron powder is distributed in the first annular compartment, the second annular compartment and the third annular compartment under the action of centrifugal force, and when the vibration frequency of the fan blade exceeds the maximum vibration preset value, the strain gauge sensor triggers the corresponding electromagnet mechanism to adjust the iron powder adsorption position in the corresponding annular compartment, thereby automatically adjusting the dynamic balance in the process of fine-tuning the iron powder distribution; the present application can effectively prevent the concentrated accumulation of iron powder, reduce vibration and noise, extend the life of the fan, and improve the heat dissipation effect and overall operation stability.

[0014] Preferably, the electromagnet mechanism includes a first electromagnet arranged close to the first annular compartment, a second electromagnet arranged on one side of the first electromagnet and close to the second annular compartment, and a third electromagnet arranged on one side of the second electromagnet and close to the third annular compartment.

[0015] By adopting the above technical scheme, the first electromagnet is arranged corresponding to the first annular compartment, the second electromagnet is arranged corresponding to the second annular compartment, and the third electromagnet is arranged corresponding to the third annular compartment, so as to form a layered control structure; during the operation of the fan, when it is detected that the vibration frequency of the fan blade device exceeds the maximum vibration preset value, the strain gauge sensor triggers the corresponding first electromagnet, second electromagnet and third electromagnet one by one to start, so as to gradually attract iron powder through electromagnetic force, and gradually increase the weight of the attracted iron powder to achieve the corresponding weight that keeps the fan blade device in rotational balance; the present application can achieve independent control of iron powder in different positions through the layered electromagnet and compartment design, accurately adjust the dynamic balance, effectively reduce vibration and noise, and improve the stability and service life of the fan operation.

[0016] Preferably, the fan blade balancing device further comprises an electric slip ring mechanism provided between the stator device and the fan blade device, the electric slip ring mechanism being connected to one end of the stator device facing the fan blade device, and the electric slip ring mechanism being electrically connected to the plurality of electromagnet mechanisms respectively.

[0017] By adopting the above technical solution, one end of the electric slip ring mechanism is connected to the stator device and faces the fan blade device, and the other end is electrically connected to multiple electromagnet mechanisms, thereby realizing the transmission of power and signals; the present application realizes a reliable electrical connection between the electromagnet mechanism and the external power supply during the rotation process through the electric slip ring mechanism, and provides a stable power supply without rotation restriction, thereby ensuring that the fan can achieve real-time and precise balance adjustment even when rotating at high speed, effectively reducing vibration and noise.

[0018] Preferably, the iron powder includes iron powder particles and a lubricating coating wrapped around the outer side walls of the iron powder particles.

[0019] By adopting the above technical scheme, the lubricating coating can effectively reduce the friction between iron powder particles, so that the iron powder particles can be quickly and smoothly redistributed under the action of the electromagnet mechanism to achieve dynamic balancing adjustment; the electromagnet mechanism changes the distribution of iron powder particles in different compartments by adjusting the electromagnetic field force, and the lubricating coating further ensures the fluidity and response speed of the iron powder particles, reduces dust or adhesion caused by friction, and ensures the stability and efficiency of the balancing adjustment, thereby reducing fan vibration and noise, and improving the overall service life and smooth operation.

[0020] Preferably, the fan casing includes a casing body, and a rotating support column connected to the casing body and used to be inserted into the rotor device, the rotating support column is provided with a rotating through hole, and the rotating support column maintains a gap with the rotor device; the fan blade device also includes a fan blade support mechanism connected to the fan blade base and movably inserted into the rotating through hole.

[0021] By adopting the above technical solution, when the fan is running, the fan blade device maintains high-speed rotation in the rotating through hole through the stable support provided by the rotating support column, forming a continuous airflow effect; the gap design between the rotating support column and the rotor device effectively reduces friction, avoids wear caused by contact, and improves the stability and service life of the fan; the present application ensures that the rotor device and the fan blade device can rotate stably and efficiently during long-term operation through the coordinated design of the rotating support column and the fan blade support mechanism, thereby reducing wear and improving the overall operating stability and durability of the equipment.

[0022] Preferably, the fan blade base is provided with a rotor fixing groove for inserting the end of the rotor device, and a shaft seat fixing groove provided at the middle position of the rotor fixing groove;

[0023] The fan blade supporting mechanism also includes a rotating shaft seat inserted in the shaft seat fixing groove, a rotating axis fixedly connected to the rotating shaft seat and inserted into the rotating through hole, and a rotating bearing sleeved on the outer wall of the rotating axis and connected to the rotating support column; the rotating bearing is inserted in the rotating through hole.

[0024] By adopting the above technical solution, the rotating bearing is inserted into the rotating through hole, and provides rotational support through close cooperation with the rotating support column, so that the rotating axis can remain stable and rotate freely during operation; the present application realizes multi-level support between the rotor device, the rotating axis and the rotating support column, effectively reducing the direct contact and friction between the rotating parts, and improving the rotation stability and durability of the fan; and the rotating bearing provides smooth rotational support, further reducing vibration and wear.

[0025] Preferably, the rotating shaft seat and the rotating axis are integrally formed.

[0026] By adopting the above technical solution, the rotating shaft seat and the rotating axis are designed as an integral part, so that the rotating shaft seat and the rotating axis become a complete structural unit, and are inserted into the shaft seat fixing groove of the blade base to firmly connect the blade base and the rotating axis; the one-piece molding design of the present application avoids the traditional multi-component assembly, reduces assembly errors and contact wear, and enables the rotating axis to maintain high precision and stability during operation, while enhancing the overall rigidity of the rotating structure; it also enables the rotating parts of the fan to achieve efficient rotation under conditions of lower friction, thereby reducing vibration and wear, extending the service life of the fan and improving the smoothness and durability of the fan operation.

[0027] Preferably, a balancing method for a self-balancing fan comprises the self-balancing fan, wherein the vibration frequency of the fan blade device is f, and the maximum preset vibration frequency of the fan blade device is f 预 , further comprising the following steps:

[0028] S1: Start the fan, and the rotor device drives the fan blade device to rotate;

[0029] S2: The strain gauge sensor detects the vibration frequency of the fan blade device;

[0030] S3: When the vibration frequency f on one side of the fan device is greater than or equal to f 预 When the strain gauge sensor at the corresponding position triggers the corresponding electromagnet mechanism to open, the electromagnet mechanism attracts the iron powder to increase the weight of the vibrating side of the fan blade device;

[0031] S4: When the vibration frequency of one side of the fan blade device is f<f 预 When the strain gauge sensor at the corresponding position triggers the corresponding electromagnet mechanism to maintain the current open or closed state.

[0032] By adopting the above technical solution, stable operation is achieved by real-time monitoring and dynamic adjustment of the balance of the fan blade device. After the fan is started, the rotor device drives the fan blade device to rotate, and the vibration frequency f of the fan blade device is monitored in real time by the strain gauge sensor. When the vibration frequency f of either side of the fan blade device reaches or exceeds the maximum preset vibration frequency f 预 When the strain gauge sensor on this side triggers the electromagnet mechanism at the corresponding position to open and attract iron powder to concentrate on this vibrating side, thereby increasing the weight of the vibrating side and balancing the vibration caused by centrifugal unevenness; when the vibration frequency f is lower than f 预 The strain gauge sensor triggers the electromagnet mechanism to maintain the current open or closed state to maintain the stable distribution of iron powder; the present application can automatically detect and adjust the balance state of the fan blade device through the synergistic effect of the strain gauge sensor, the electromagnet mechanism and the iron powder, thereby effectively reducing vibration and noise, extending the service life of the fan, and improving the operating stability of the fan and the heat dissipation and ventilation effects.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] 1. A self-balancing fan, wherein a stator device is fixed on a fan housing and arranged around the outer side of a rotor device to form an electromagnetic action area to drive the rotor device; a fan blade device is connected to the rotor device to drive the airflow as the rotor device rotates; a fan blade balancing device is used to adjust the unbalanced state of the fan blades. When the vibration frequency of one side of the fan blade device is greater than the maximum preset vibration frequency, the strain gauge sensor at the corresponding position will detect the abnormal vibration and trigger the corresponding electromagnet mechanism to start. The electromagnet mechanism attracts iron powder to the vibration area through electromagnetic force, so that the weight of the vibration area is increased to dynamically balance the unbalanced state during the rotation process and reduce vibration; the present application effectively balances the centrifugal imbalance of the fan blade device during rotation by real-time monitoring and adjusting the distribution of iron powder, reduces the noise and wear caused by vibration, and thus improves the operating stability and service life of the fan;

[0035] 2. A self-balancing fan, wherein the iron powder storage mechanism comprises three concentric annular compartments, namely a first annular compartment, a second annular compartment and a third annular compartment, wherein the third annular compartment, the second annular compartment and the first annular compartment are arranged in sequence, thereby forming a layered iron powder storage space in the structure; the iron powder is filled in the first annular compartment, the second annular compartment and the third annular compartment respectively, and the present application separates the iron powder so that the iron powder can bear the centrifugal force more evenly, thereby avoiding imbalance caused by concentrated accumulation of iron powder during rotation; during the rotation of the fan blade device, the iron powder is distributed in the first annular compartment, the second annular compartment and the third annular compartment under the action of centrifugal force, and when the vibration frequency of the fan blade exceeds the maximum vibration preset value, the strain gauge sensor triggers the corresponding electromagnet mechanism to adjust the iron powder adsorption position in the corresponding annular compartment, thereby automatically adjusting the dynamic balance in the process of fine-tuning the iron powder distribution; the present application can effectively prevent the concentrated accumulation of iron powder, reduce vibration and noise, extend the life of the fan, and improve the heat dissipation effect and overall operation stability;

[0036] 3. A balancing method for a self-balancing fan, which realizes stable operation by real-time monitoring and dynamic adjustment of the balance of a fan blade device; after starting the fan, the rotor device drives the fan blade device to rotate, and the vibration frequency f of the fan blade device is monitored in real time by a strain gauge sensor; when the vibration frequency f of any side of the fan blade device reaches or exceeds the maximum preset vibration frequency f 预 When the strain gauge sensor on this side triggers the electromagnet mechanism at the corresponding position to open and attract iron powder to concentrate on this vibrating side, thereby increasing the weight of the vibrating side and balancing the vibration caused by centrifugal unevenness; when the vibration frequency f is lower than f 预 The strain gauge sensor triggers the electromagnet mechanism to maintain the current open or closed state to maintain the stable distribution of iron powder; the present application can automatically detect and adjust the balance state of the fan blade device through the synergistic effect of the strain gauge sensor, the electromagnet mechanism and the iron powder, thereby effectively reducing vibration and noise, extending the service life of the fan, and improving the operating stability of the fan and the heat dissipation and ventilation effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a cross-sectional view of a self-balancing fan embodiment of the present invention. Figure 1 .

[0038] Figure 2 This is a cross-sectional view of a self-balancing fan embodiment of the present invention. Figure 2 .

[0039] Figure 3 It is a schematic diagram of the exploded sectional structure of a self-balancing fan embodiment of the present application.

[0040] Figure 4 It is a schematic cross-sectional structure diagram of iron powder in a self-balancing fan embodiment of the present application.

[0041] Figure 5 It is a schematic flow chart of the steps of an embodiment of a balancing method for a self-balancing fan of the present application.

[0042] Description of reference numerals:

[0043] 1. Fan casing; 11. Casing body; 12. Rotating support column; 13. Rotating through hole; 2. Rotor device; 3. Stator device; 4. Blade device; 41. Blade base; 42. Blade side wall; 43. Blade body; 44. Blade supporting mechanism; 411. Rotor fixing groove; 412. Shaft seat fixing groove; 441. Rotating shaft seat; 442. Rotating axis; 443. Rotating bearing;

[0044] 5. Blade balancing device; 51. Iron powder storage mechanism; 52. Iron powder; 53. Electromagnet mechanism; 54. Strain gauge sensor; 55. Electric slip ring mechanism; 511. First annular compartment; 512. Second annular compartment; 513. Third annular compartment; 521. Iron powder particles; 522. Lubricating coating; 531. First electromagnet; 532. Second electromagnet; 533. Third electromagnet. DETAILED DESCRIPTION

[0045] The following is combined with Figures 1 to 5 This application is described in further detail.

[0046] The present application embodiment discloses a self-balancing fan and a balancing method. Figure 1 A self-balancing fan comprises a fan housing 1, a rotor device 2 inserted in the fan housing 1 and rotatably connected to the fan housing 1, a stator device 3 fixedly connected to the fan housing 1 and sleeved on the outside of the rotor device 2, a blade device 4 connected to the rotor device 2 and movably inserted in the fan housing 1, and a blade balancing device 5 connected to the blade device 4;

[0047] The fan blade balancing device 5 includes an iron powder storage mechanism 51 connected to the outer side wall of the fan blade device 4, iron powder 52 movably arranged inside the iron powder storage mechanism 51, an electromagnet mechanism 53 connected to the inner side wall of the fan blade device 4 and arranged in an array along the circumference of the fan blade device 4, and a strain gauge sensor 54 connected to the fan blade device 4 and electrically connected to the electromagnet mechanism 53; the strain gauge sensor 54 corresponds to the electromagnet mechanism 53 one by one and is arranged in an array along the circumference of the fan blade device 4;

[0048] When the vibration frequency on one side of the fan blade device 4 is greater than the maximum preset vibration frequency, the strain gauge sensor 54 on one side of the fan blade device 4 triggers the corresponding electromagnet mechanism 53 to start and attract the iron powder 52 .

[0049] The stator device 3 of the present application is fixed on the fan housing 1 and is arranged around the outer side of the rotor device 2 to form an electromagnetic action area to drive the rotor device 2; the fan blade device 4 is connected to the rotor device 2, and drives the airflow as the rotor device 2 rotates; the fan blade balancing device 5 is used to adjust the unbalanced state of the fan blade. When the vibration frequency of one side of the fan blade device 4 is greater than the maximum preset vibration frequency, the strain gauge sensor 54 at the corresponding position will detect the abnormal vibration and trigger the corresponding electromagnet mechanism 53 to start. The electromagnet mechanism 53 attracts the iron powder 52 to the vibration area through electromagnetic force, so that the weight of the vibration area is increased to dynamically balance the unbalanced state during the rotation process and reduce vibration; the present application effectively balances the centrifugal imbalance of the fan blade device 4 during rotation by real-time monitoring and adjusting the distribution of the iron powder 52, reduces the noise and wear caused by vibration, and thus improves the operating stability and service life of the fan;

[0050] The stator device 3 of the present application is provided with a coil and is electrically connected to an external power source.

[0051] Furthermore, if Figure 1 As shown, the fan blade device 4 includes a fan blade base 41 connected to the rotor device 2, a fan blade side wall 42 connected to the side of the fan blade base 41 and sleeved on the circumference of the stator device 3, and a fan blade body 43 connected to the fan blade side wall 42 and arranged in an array along the circumference of the fan blade side wall 42;

[0052] The iron powder storage mechanism 51 is connected to the outer side wall of the blade base 41 , the electromagnet mechanism 53 is connected to the inner side wall of the blade base 41 , and the strain gauge sensor 54 is connected to the outer side wall of the blade side wall 42 .

[0053] The fan blade base 41 of the present application is connected to the rotor device 2, and is used to fix the entire fan blade device 4 and provide rotation drive; the fan blade side wall 42 is connected to the side edge of the fan blade base 41, and is sleeved on the peripheral side of the stator device 3, so that the fan blade device 4 can rotate around the stator device 3 to generate an airflow effect; the fan blade body 43 is connected to the fan blade side wall 42, and is arranged in an array along the peripheral side of the fan blade side wall 42 to form a plurality of fan blades, thereby improving ventilation efficiency;

[0054] The iron powder storage mechanism 51 is connected to the outer wall of the fan blade base 41 to form a storage position for the iron powder 52; the electromagnet mechanism 53 is used to attract or release the iron powder 52 and adjust the distribution of the iron powder 52 to balance the vibration; the strain gauge sensor 54 is fixed to the outer wall of the fan blade side wall 42 to monitor the vibration state in real time and trigger the corresponding electromagnet mechanism 53 when the vibration exceeds the maximum preset vibration frequency; during the rotation process of the present application, when the vibration frequency on one side of the fan blade body 43 exceeds the set value, the strain gauge sensor 54 detects the abnormality and triggers the corresponding electromagnet mechanism 53, which balances the uneven centrifugal force in the area by attracting the iron powder 52, thereby reducing vibration, noise and wear, extending the life of the fan and improving its stability and reliability;

[0055] The electromagnet mechanism 53 is preferably an electromagnet.

[0056] Furthermore, if Figure 2 and Figure 3 As shown, the iron powder storage mechanism 51 is provided with a first annular compartment 511, a second annular compartment 512 sleeved on the side of the first annular compartment 511, and a third annular compartment 513 sleeved on the side of the second annular compartment 512; the iron powder 52 is respectively arranged in the first annular compartment 511, the second annular compartment 512, and the third annular compartment 513.

[0057] The iron powder storage mechanism 51 of the present application includes three concentric annular compartments, namely the first annular compartment 511, the second annular compartment 512 and the third annular compartment 513. The third annular compartment 513, the second annular compartment 512 and the first annular compartment 511 are sequentially arranged, thereby forming a layered iron powder 52 storage space in the structure; the iron powder 52 is filled in the first annular compartment 511, the second annular compartment 512 and the third annular compartment 513 respectively. The present application separates the iron powder 52 so that the iron powder 52 can be more evenly subjected to the centrifugal force, thereby avoiding the concentrated accumulation of the iron powder 52 during rotation. accumulation and thus leads to imbalance; during the rotation of the fan blade device 4, the iron powder 52 is distributed in the first annular compartment 511, the second annular compartment 512 and the third annular compartment 513 under the action of centrifugal force, and when the vibration frequency of the fan blade exceeds the maximum vibration preset value, the strain gauge sensor 54 triggers the corresponding electromagnet mechanism 53 to adjust the adsorption position of the iron powder 52 in the corresponding annular compartment, thereby automatically adjusting the dynamic balance in the process of fine-tuning the distribution of the iron powder 52; the present application can effectively prevent the iron powder 52 from being concentrated and accumulated, reduce vibration and noise, extend the life of the fan, and improve the heat dissipation effect and the overall operation stability.

[0058] Specifically, Figure 3 As shown, the electromagnet mechanism 53 includes a first electromagnet 531 arranged close to the first annular compartment 511, a second electromagnet 532 arranged on one side of the first electromagnet 531 and close to the second annular compartment 512, and a third electromagnet 533 arranged on one side of the second electromagnet 532 and close to the third annular compartment 513.

[0059] In the present application, the first electromagnet 531 is arranged corresponding to the first annular compartment 511, the second electromagnet 532 is arranged corresponding to the second annular compartment 512, and the third electromagnet 533 is arranged corresponding to the third annular compartment 513, so as to form a layered control structure; during the operation of the fan, when it is detected that the vibration frequency of the fan blade device 4 exceeds the maximum vibration preset value, the strain gauge sensor 54 triggers the corresponding first electromagnet 531, the second electromagnet 532 and the third electromagnet 533 one by one to start, so as to gradually attract the iron powder 52 through electromagnetic force, and gradually increase the weight of the attracted iron powder 52, so as to achieve the corresponding weight for keeping the fan blade device 4 in rotational balance; through the layered electromagnet and compartment design, the present application can achieve independent control of the iron powder 52 at different positions, accurately adjust the dynamic balance, effectively reduce vibration and noise, and improve the stability and service life of the fan operation.

[0060] More specifically, if Figure 3 As shown, the blade balancing device 5 also includes an electric slip ring mechanism 55 arranged between the stator device 3 and the blade device 4. The electric slip ring mechanism 55 is connected to one end of the stator device 3 facing the blade device 4, and the electric slip ring mechanism 55 is electrically connected to multiple electromagnet mechanisms 53 respectively.

[0061] One end of the electric slip ring mechanism 55 of the present application is connected to the stator device 3 and faces the fan blade device 4, and the other end is electrically connected to multiple electromagnet mechanisms 53, thereby realizing the transmission of power and signals; the present application realizes a reliable electrical connection between the electromagnet mechanism 53 and the external power supply during the rotation process through the electric slip ring mechanism 55, and provides a stable power supply without rotation restriction, thereby ensuring that the fan can also achieve real-time and accurate balance adjustment when rotating at high speed, effectively reducing vibration and noise.

[0062] In addition, if Figure 4 As shown, the iron powder 52 includes iron powder particles 521 and a lubricating coating 522 wrapped around the outer side wall of the iron powder particles 521 .

[0063] The lubricating coating 522 of the present application can effectively reduce the friction between the iron powder particles 521, so that the iron powder particles 521 can be quickly and smoothly redistributed under the action of the electromagnet mechanism 53 to achieve dynamic balance adjustment; the electromagnet mechanism 53 changes the distribution of the iron powder particles 521 in different compartments by adjusting the electromagnetic field force, and the lubricating coating 522 further ensures the fluidity and response speed of the iron powder particles 521, reduces the dust or adhesion caused by friction, ensures the stability and efficiency of the balance adjustment, thereby reducing the vibration and noise of the fan, and improving the overall service life and operation stability;

[0064] The iron powder particles 521 of the present application are preferably iron-nickel alloy powders, and the lubricating coating 522 is preferably a polytetrafluoroethylene (PTFE) coating, and the polytetrafluoroethylene (PTFE) is coated on the surface of the iron powder particles 521 by a spraying process.

[0065] And, if Figure 1 and Figure 3 As shown, the fan casing 1 includes a casing body 11, and a rotating support column 12 connected to the casing body 11 and used to be inserted into the rotor device 2, and a rotating through hole 13 is provided on the rotating support column 12, and a gap is maintained between the rotating support column 12 and the rotor device 2; the fan blade device 4 also includes a fan blade support mechanism 44 connected to the fan blade base 41 and movably inserted into the rotating through hole 13.

[0066] The rotating support column 12 of the present application maintains a gap with the rotor device 2, so that the rotor device 2 can rotate freely; when the fan is running, the stable support provided by the rotating support column 12 allows the fan blade device 4 to maintain high-speed rotation in the rotating through hole 13, forming a continuous airflow effect; the gap design between the rotating support column 12 and the rotor device 2 effectively reduces friction, avoids wear caused by contact, and improves the stability and service life of the fan; the present application ensures that the rotor device 2 and the fan blade device 4 can rotate stably and efficiently during long-term operation through the coordinated design of the rotating support column 12 and the fan blade support mechanism 44, thereby reducing wear and improving the overall operating stability and durability of the equipment.

[0067] Furthermore, if Figure 3 As shown, the fan blade base 41 is provided with a rotor fixing groove 411 for inserting the end of the rotor device 2, and a shaft seat fixing groove 412 provided at the middle position of the rotor fixing groove 411;

[0068] The fan blade supporting mechanism 44 also includes a rotating shaft seat 441 inserted into the shaft seat fixing groove 412, a rotating axis 442 fixedly connected to the rotating shaft seat 441 and inserted into the rotating through hole 13, and a rotating bearing 443 sleeved on the outer wall of the rotating axis 442 and connected to the rotating support column 12; the rotating bearing 443 is inserted into the rotating through hole 13.

[0069] The rotating bearing 443 of the present application is inserted into the rotating through hole 13, and provides rotational support by closely fitting with the rotating support column 12, so that the rotating axis 442 can maintain stability and rotate freely during operation; the present application realizes multi-level support between the rotor device 2, the rotating axis 442 and the rotating support column 12, effectively reducing the direct contact and friction between the rotating parts, and improving the rotational stability and durability of the fan; and the rotating bearing 443 provides smooth rotational support, further reducing vibration and wear.

[0070] Furthermore, if Figure 3As shown, the rotating shaft seat 441 and the rotating shaft core 442 are integrally formed.

[0071] The rotating shaft seat 441 and the rotating shaft 442 of the present application adopt an integrated molding design, so that the rotating shaft seat 441 and the rotating shaft 442 become a complete structural unit, and are inserted into the shaft seat fixing groove 412 of the fan blade base 41, thereby firmly connecting the fan blade base 41 and the rotating shaft 442;

[0072] The one-piece design of the present application avoids traditional multi-component assembly, reduces assembly errors and contact wear, enables the rotating axis 442 to maintain high precision and stability during operation, and enhances the overall rigidity of the rotating structure; it also enables the rotating parts of the fan to achieve efficient rotation under conditions of lower friction, thereby reducing vibration and wear, extending the service life of the fan and improving the smoothness and durability of the fan operation.

[0073] Specifically, Figure 5 As shown, a balancing method for a self-balancing fan includes a self-balancing fan, a blade device 4 having a vibration frequency of f, and a maximum preset vibration frequency of the blade device 4 being f 预 , further comprising the following steps:

[0074] S1: Start the fan, and the rotor device 2 drives the fan blade device 4 to rotate;

[0075] S2: The strain gauge sensor 54 detects the vibration frequency of the fan device 4;

[0076] S3: When the vibration frequency f on one side of the fan device 4 is greater than or equal to f 预 When the strain gauge sensor 54 at the corresponding position triggers the corresponding electromagnet mechanism 53 to open, and the electromagnet mechanism 53 attracts the iron powder 52 to increase the weight of the vibrating side of the fan blade device 4;

[0077] S4: When the vibration frequency of one side of the fan blade device 4 is f<f 预 When the strain gauge sensor 54 at the corresponding position triggers the corresponding electromagnet mechanism 53 to maintain the current open or closed state.

[0078] The present application realizes stable operation by real-time monitoring and dynamic adjustment of the balance of the blade device 4; after starting the fan, the rotor device 2 drives the blade device 4 to rotate, and the vibration frequency f of the blade device 4 is monitored in real time by the strain gauge sensor 54; when the vibration frequency f of any side of the blade device 4 reaches or exceeds the maximum preset vibration frequency f 预 When the strain gauge sensor 54 on this side triggers the electromagnet mechanism 53 at the corresponding position to open, and attract the iron powder 52 to concentrate on this vibrating side, thereby increasing the weight of the vibrating side and balancing the vibration caused by centrifugal unevenness; when the vibration frequency f is lower than f 预When the strain gauge sensor 54 triggers the electromagnet mechanism 53 to maintain the current open or closed state to maintain the stable distribution of the iron powder 52; the present application can automatically detect and adjust the balance state of the fan blade device 4 through the synergistic effect of the strain gauge sensor 54, the electromagnet mechanism 53 and the iron powder 52, thereby effectively reducing vibration and noise, extending the service life of the fan, and improving the operating stability and heat dissipation and ventilation effects of the fan.

[0079] The implementation principle of a self-balancing fan and a balancing method in the embodiment of the present application is:

[0080] A self-balancing fan, wherein a stator device 3 is fixed on a fan housing 1 and arranged around the outer side of a rotor device 2 to form an electromagnetic action area to drive the rotor device 2; a fan blade device 4 is connected to the rotor device 2 to drive the airflow as the rotor device 2 rotates; a fan blade balancing device 5 is used to adjust the unbalanced state of the fan blades. When the vibration frequency of one side of the fan blade device 4 is greater than the maximum preset vibration frequency, a strain gauge sensor 54 at a corresponding position will detect abnormal vibration and trigger the corresponding electromagnet mechanism 53 to start. The electromagnet mechanism 53 attracts iron powder 52 to the vibration area through electromagnetic force, so that the weight of the vibration area is increased to dynamically balance the unbalanced state during rotation and reduce vibration; the present application effectively balances the centrifugal imbalance of the fan blade device 4 during rotation by real-time monitoring and adjusting the distribution of the iron powder 52, reduces the noise and wear caused by vibration, and thus improves the operating stability and service life of the fan;

[0081] A self-balancing fan, wherein an iron powder storage mechanism 51 comprises three concentric annular compartments, namely a first annular compartment 511, a second annular compartment 512 and a third annular compartment 513, wherein the third annular compartment 513, the second annular compartment 512 and the first annular compartment 511 are sequentially arranged, thereby forming a layered iron powder 52 storage space in the structure; the iron powder 52 is filled in the first annular compartment 511, the second annular compartment 512 and the third annular compartment 513 respectively, and the present application separates the iron powder 52 so that the iron powder 52 can be more evenly subjected to the centrifugal force, thereby avoiding the iron powder 52 from rotating due to the centrifugal force. The iron powder 52 is concentrated and accumulates, resulting in imbalance. During the rotation of the fan device 4, the iron powder 52 is distributed in the first annular compartment 511, the second annular compartment 512 and the third annular compartment 513 under the action of centrifugal force. When the vibration frequency of the fan blade exceeds the maximum vibration preset value, the strain gauge sensor 54 triggers the corresponding electromagnet mechanism 53 to adjust the adsorption position of the iron powder 52 in the corresponding annular compartment, thereby automatically adjusting the dynamic balance in the process of fine-tuning the distribution of the iron powder 52. The present application can effectively prevent the iron powder 52 from being concentrated and accumulated, reduce vibration and noise, extend the life of the fan, and improve the heat dissipation effect and overall operation stability.

[0082] A balancing method for a self-balancing fan achieves stable operation by real-time monitoring and dynamically adjusting the balance of a fan blade device 4; after starting the fan, a rotor device 2 drives the fan blade device 4 to rotate, and a vibration frequency f of the fan blade device 4 is monitored in real time by a strain gauge sensor 54; when the vibration frequency f of any side of the fan blade device 4 reaches or exceeds a maximum preset vibration frequency f 预 When the strain gauge sensor 54 on this side triggers the electromagnet mechanism 53 at the corresponding position to open, and attract the iron powder 52 to concentrate on this vibrating side, thereby increasing the weight of the vibrating side and balancing the vibration caused by centrifugal unevenness; when the vibration frequency f is lower than f 预 When the strain gauge sensor 54 triggers the electromagnet mechanism 53 to maintain the current open or closed state to maintain the stable distribution of the iron powder 52; the present application can automatically detect and adjust the balance state of the fan blade device 4 through the synergistic effect of the strain gauge sensor 54, the electromagnet mechanism 53 and the iron powder 52, thereby effectively reducing vibration and noise, extending the service life of the fan, and improving the operating stability and heat dissipation and ventilation effects of the fan.

[0083] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A self-balancing fan, characterized in that: The fan comprises a fan housing (1), a rotor device (2) inserted into the fan housing (1) and rotatably connected to the fan housing (1), a stator device (3) fixedly connected to the fan housing (1) and sleeved on the outside of the rotor device (2), a blade device (4) connected to the rotor device (2) and movably inserted into the fan housing (1), and a blade balancing device (5) connected to the blade device (4); The fan blade balancing device (5) comprises an iron powder storage mechanism (51) connected to the outer wall of the fan blade device (4), iron powder (52) movably arranged inside the iron powder storage mechanism (51), an electromagnet mechanism (53) connected to the inner wall of the fan blade device (4) and arranged in an array along the circumference of the fan blade device (4), and a strain gauge sensor (54) connected to the fan blade device (4) and electrically connected to the electromagnet mechanism (53); the strain gauge sensor (54) corresponds to the electromagnet mechanism (53) one by one and is arranged in an array along the circumference of the fan blade device (4); When the vibration frequency of one side of the fan blade device (4) is greater than a maximum preset vibration frequency, the strain gauge sensor (54) on one side of the fan blade device (4) triggers the corresponding electromagnet mechanism (53) to start and attract the iron powder (52); The fan blade device (4) comprises a fan blade base (41) connected to the rotor device (2), a fan blade side wall (42) connected to the side edge of the fan blade base (41) and sleeved on the circumference of the stator device (3), and a fan blade body (43) connected to the fan blade side wall (42) and arranged in an array along the circumference of the fan blade side wall (42); The iron powder storage mechanism (51) is connected to the outer side wall of the fan blade base (41), the electromagnet mechanism (53) is connected to the inner side wall of the fan blade base (41), and the strain gauge sensor (54) is connected to the outer side wall of the fan blade side wall (42).

2. A self-balancing fan according to claim 1, characterized in that: The iron powder storage mechanism (51) is provided with a first annular compartment (511), a second annular compartment (512) sleeved on the circumference of the first annular compartment (511), and a third annular compartment (513) sleeved on the circumference of the second annular compartment (512); the iron powder (52) is respectively arranged in the first annular compartment (511), the second annular compartment (512), and the third annular compartment (513).

3. A self-balancing fan according to claim 2, characterized in that: The electromagnet mechanism (53) comprises a first electromagnet (531) arranged close to the first annular compartment (511), a second electromagnet (532) arranged on one side of the first electromagnet (531) and close to the second annular compartment (512), and a third electromagnet (533) arranged on one side of the second electromagnet (532) and close to the third annular compartment (513).

4. A self-balancing fan according to claim 1, characterized in that: The fan blade balancing device (5) further comprises an electric slip ring mechanism (55) arranged between the stator device (3) and the fan blade device (4); the electric slip ring mechanism (55) is connected to one end of the stator device (3) facing the fan blade device (4); and the electric slip ring mechanism (55) is electrically connected to the plurality of electromagnet mechanisms (53) respectively.

5. The self-balancing fan according to claim 1, characterized in that: The iron powder (52) comprises iron powder particles (521) and a lubricating coating (522) wrapped around the outer side wall of the iron powder particles (521).

6. The self-balancing fan according to claim 1, characterized in that: The fan casing (1) comprises a casing body (11), and a rotating support column (12) connected to the casing body (11) and used for being inserted into the rotor device (2), wherein the rotating support column (12) is provided with a rotating through hole (13), and a gap is maintained between the rotating support column (12) and the rotor device (2); the fan blade device (4) further comprises a fan blade support mechanism (44) connected to the fan blade base (41) and movably inserted into the rotating through hole (13).

7. A self-balancing fan according to claim 6, characterized in that: The fan blade base (41) is provided with a rotor fixing groove (411) for inserting the end of the rotor device (2), and a shaft seat fixing groove (412) provided at a middle position of the rotor fixing groove (411); The fan blade support mechanism (44) also includes a rotating shaft seat (441) inserted into the shaft seat fixing groove (412), a rotating shaft (442) fixedly connected to the rotating shaft seat (441) and inserted into the rotating through hole (13), and a rotating bearing (443) sleeved on the outer wall of the rotating shaft (442) and connected to the rotating support column (12); the rotating bearing (443) is inserted into the rotating through hole (13).

8. A self-balancing fan according to claim 7, characterized in that: The rotating shaft seat (441) and the rotating shaft center (442) are integrally formed.

9. A balancing method for a self-balancing fan, characterized in that: A self-balancing fan comprising any one of claims 1 to 8, wherein the vibration frequency of the fan blade device (4) is f, and the maximum preset vibration frequency of the fan blade device (4) is f 预 , further comprising the following steps: S1: starting the fan, and the rotor device (2) drives the fan blade device (4) to rotate; S2: the strain gauge sensor (54) detects the vibration frequency of the fan blade device (4); S3: When the vibration frequency f on one side of the fan blade device (4) is greater than or equal to f 预 When the strain gauge sensor (54) at the corresponding position triggers the corresponding electromagnet mechanism (53) to open, and the electromagnet mechanism (53) attracts the iron powder (52) to increase the weight of the vibrating side of the fan blade device (4); S4: When the vibration frequency of one side of the fan blade device (4) is f<f 预 When the strain gauge sensor (54) at the corresponding position triggers the corresponding electromagnet mechanism (53) to maintain the current open or closed state.

Images