Bearing dustproof fan

Abstract

The utility model relates to a bearing dustproof fan which comprises a fan outer shell, a fan inner shell connected with the fan outer shell in a sleeved mode, a copper middle pipe installed in the fan inner shell, a bearing connected to the inner side of the copper middle pipe, a plastic silicon steel sheet connected to the outer side of the copper middle pipe, a fan blade piece connected with the bearing and a magnetic strip arranged on the fan blade piece and matched with the plastic silicon steel sheet. The fan blade piece comprises a shaft center connected with the bearing, a main body disc connected with the shaft center, main body blades connected to the edge of the main body disc, and dustproof blades used for blowing air near the bearing to the outside. According to the dustproof fan for the bearing, the dustproof blade is additionally arranged at the position close to the bearing, the dustproof blade rotates along with the main body blade, dust near the bearing is blown away, dust accumulation is reduced, the service life of the fan is prolonged, the optimization cost is low, and the practicability is extremely high.

Description

Technical Field

[0001] The utility model relates to the field of bearing fans, and in particular to a bearing dust-proof fan. Background Art

[0002] Dust and foreign matter, though seemingly insignificant, are invisible killers lurking deep within precision machinery, especially in critical areas like bearings. Even the slightest intrusion can trigger a chain reaction, accelerating premature failure. For a long time, mainstream technical approaches have focused on reducing the gaps between components to create a tight defense against external damage. However, this approach harbors significant risks and challenges. Reducing gaps inevitably places higher demands on manufacturing precision, forcing manufacturers to invest in expensive high-precision machine tools and testing equipment, significantly increasing production costs. This increased precision means that the tolerance range for each component is extremely narrow. Any slight deviation can lead to a decrease in yield, further increasing the company's financial burden. The pursuit of extreme compactness often leads to neglecting the proper design of dimensional tolerance chains, which can easily cause unintended contact between components, a phenomenon known as collision. The resulting abnormal noise (squeaky sound) disrupts the smooth operation of the equipment, not only reducing the user experience but also potentially increasing wear and shortening the equipment lifespan.

[0003] Traditional approaches are reaching a bottleneck, and the industry is urgently calling for new solutions. However, a lack of effective alternatives has stalled technological innovation. Increasingly competitive markets and rising customer expectations for product quality and performance are putting companies under unprecedented pressure to transform.

[0004] To sum up, it is difficult for existing technical paths to find a balance between dust prevention efficiency and cost control, which is undoubtedly a severe test for the entire industry. Utility Model Content

[0005] In view of this, the utility model provides a bearing dust-proof fan, in which dust-proof blades are added near the bearing. The dust-proof blades rotate with the main blades to blow away the dust near the bearing, reduce dust accumulation, and increase the life of the fan. The optimization cost is low and the practicality is extremely high.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A bearing dustproof fan comprises a fan housing, a fan inner housing sleeved with the fan housing, a copper middle tube mounted on the fan inner housing, a bearing connected to the inner side of the copper middle tube, a plastic silicon steel sheet connected to the outer side of the copper middle tube, a fan blade connected to the bearing, and a magnetic strip arranged on the fan blade and cooperating with the plastic silicon steel sheet. The fan blade comprises an axis connected to the bearing, a main body disc connected to the axis, main blades connected to the edge of the main body disc, and dustproof blades for blowing air near the bearing to the outside.

[0008] The dust-proof blades directly target dust and foreign matter. By actively capturing and repelling these particles, they effectively reduce pressure on the bearings, preventing tiny particles from entering delicate internal components and increasing mechanical friction, thereby extending the life of the entire system. The introduction of the dust-proof blades creates a protective barrier around the bearings, a crucial and vulnerable component. As the main blades rotate, the dust-proof blades swing in unison, directing air away from the bearings and quickly removing any tiny dust particles that approach. This mechanism significantly reduces the chance of dust accumulation, preventing the chain reaction of increased wear and tear energy consumption and decreased heat transfer efficiency, significantly extending the life of the fan and the entire system.

[0009] In addition to preventing dust, the dust-proof blades also help improve air circulation in local areas, promoting faster heat transfer from the heat source to the cooling medium. This is particularly critical under intensive computing or high-load conditions, helping to maintain the device within the ideal operating temperature range, ensuring stable performance output without overheating and shutdown.

[0010] The preventative effect of the dust-proof blades significantly reduces the need for regular cleaning of the fan interior, reducing the need for manual maintenance. This is particularly important for equipment that operates continuously for extended periods of time, allowing users to focus on their business rather than frequently interrupting service for maintenance and inspections, thereby improving overall operational efficiency.

[0011] Considering that dust vanes require no additional energy or complex installation procedures, achieving such excellent results solely through their structural design makes them a highly cost-effective solution. In the long term, reduced failure rates and maintenance costs, as well as the avoidance of premature replacement or repair costs, make them a highly attractive option.

[0012] Preferably, the dust-proof blades are arranged in the middle of the main disc, and the middle of the main disc has a thickened portion, and the thickness of the thickened portion is thicker than the edge of the main disc.

[0013] Arranging the dust-proof blades in the center of the main disc, especially in the thickened part, means that it is closer to the critical area of the bearing and can intercept and discharge dust approaching the bearing in the first time.

[0014] Preferably, the dust-proof blades are arranged on the thickened portion of the main disc.

[0015] The design of the thickened part provides a more solid foundation for the entire main disc, especially when rotating at high speed, it can offset part of the centrifugal force, prevent deformation or damage, and provide strong support for the dust-proof blades and other auxiliary structures.

[0016] Preferably, the end of the axis is connected to the thickened portion.

[0017] The connection between the shaft and the thickened section creates a strong and reliable connection. The increased thickness of the thickened section provides additional support, preventing the shaft from shifting or vibrating during high-speed rotation, thereby enhancing the structural integrity and operational stability of the entire device. This design not only enhances impact resistance but also creates a more ideal operating environment for the bearing. The thickened section bears the weight and rotational torque of the shaft, effectively sharing the overall load of the main disc, ensuring coordination among all components and preventing excessive pressure on a single point. This evenly distributes forces among all components, extending the overall service life and reducing wear.

[0018] Preferably, there is a first gap between the copper middle tube and the main disc, and when the dust-proof blades rotate, the air near the bearing is blown to the outside through the first gap.

[0019] As the dust-proof blades rotate, they effortlessly push the air around the bearings outward, creating a natural barrier that blocks intrusive dust and impurities, removing them at their source and protecting the bearings from contamination. This naturally formed air curtain effect also helps prevent external impurities from being drawn into the machine, further enhancing the system's self-purification capabilities.

[0020] Preferably, there is a second gap between the main blade and the fan inner shell, a third gap between the magnetic strip and the fan inner shell, a fourth gap between the magnetic strip and the plastic silicon steel sheet, and a fifth gap between the plastic silicon steel sheet and the main disc. External dust passes through the second gap, the third gap, the fourth gap, the fifth gap, and the first gap in sequence and can reach the connection between the bearing and the axis. When the dust-proof blade rotates, the air in the first gap is blown to the second gap.

[0021] The multi-level clearance design acts like a maze, presenting numerous challenges to outside dust. With each layer of obstacles, airborne particles are gradually filtered, until only the tiniest particles remain. This continuous filtration process, essentially a high-tech hourglass, gradually dilutes harmful substances over time until they pose little threat to the proper functioning of the bearings and shaft. The dust-proof blades are the final and most powerful defense in the maze, ensuring that no dust can reach the bearings.

[0022] Preferably, the dust-proof blades are in the shape of straight teeth.

[0023] The straight-toothed dust-proof blade design and straight-edge profile generate a more concentrated wind force during rotation, similar to the effect of micro-jets. They can more precisely control the direction of airflow, effectively capturing and expelling dust close to the bearings while minimizing energy loss.

[0024] Preferably, the bending direction of the dust-proof blades is opposite to the bending direction of the main blades.

[0025] The reverse curvature design fully exploits the principles of dynamics. The main blades generate the primary airflow, while the dust-blocking blades, with their counter-rotating configuration, cleverly harness rotational energy to generate a secondary airflow, enhancing internal cleaning. The two complement each other, creating a highly effective dynamic synergy. While the main blades push air forward, the reverse curvature of the dust-blocking blades creates a cleansing airflow that pushes fine particulate matter away from the bearing area, preventing accumulation and ensuring internal cleanliness.

[0026] Preferably, it further comprises a positioning ring, which is sleeved on the axis.

[0027] The locating ring enhances the overall stability and precision of the structure. Slipping over the shaft, it secures all components together, ensuring perfect concentricity even at high speeds, reducing vibration and noise and improving overall smoothness. Furthermore, it provides additional support for the connection between the shaft and other components, preventing loosening and enhancing long-term reliability.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The utility model discloses a bearing dustproof fan, in which the presence of dustproof blades directly targets dust and foreign matter. By actively capturing and driving away these particles, the dustproof blades effectively reduce the pressure on the bearings, prevent the intensification of mechanical friction caused by tiny particles entering the internal precision components, and extend the service life of the entire system. The introduction of dustproof blades forms a protective wall around the bearing, an extremely important and vulnerable part. As the main blades rotate, the dustproof blades swing accordingly, blowing the air near the bearing outwards and quickly removing any tiny dust particles that approach the bearing. This mechanism greatly reduces the chance of dust deposition, avoids the chain reaction caused by increased wear energy consumption and decreased heat conduction efficiency, and thus significantly extends the service life of the fan and even the entire system.

[0030] In addition to preventing dust, the dust-proof blades also help improve air circulation in local areas, promoting faster heat transfer from the heat source to the cooling medium. This is particularly critical under intensive computing or high-load conditions, helping to maintain the device within the ideal operating temperature range, ensuring stable performance output without overheating and shutdown.

[0031] The preventative effect of the dust-proof blades significantly reduces the need for regular cleaning of the fan interior, reducing the need for manual maintenance. This is particularly important for equipment that operates continuously for extended periods of time, allowing users to focus on their business rather than frequently interrupting service for maintenance and inspections, thereby improving overall operational efficiency.

[0032] Considering that dust vanes require no additional energy or complex installation procedures, achieving such excellent results solely through their structural design makes them a highly cost-effective solution. In the long term, reduced failure rates and maintenance costs, as well as the avoidance of premature replacement or repair costs, make them a highly attractive option. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 This is a cross-sectional view of a bearing dust-proof fan according to an embodiment of the present invention.

[0035] Figure 2 This is a structural diagram of a bearing dust-proof fan according to an embodiment of the present invention.

[0036] Figure 3 This is a cross-sectional view of another section of the bearing dust-proof fan according to one embodiment of the present invention.

[0037] Figure 4 This is a structural diagram of a fan blade component in one embodiment of the present utility model.

[0038] Figure 5 This is a structural diagram of the fan blade component from another perspective of an embodiment of the present invention. DETAILED DESCRIPTION

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0041] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. In the description of the embodiments of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of the application is usually placed when in use, or is the orientation or position relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0042] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0043] The technical solution in this application will be described below with reference to the accompanying drawings.

[0044] This embodiment provides a bearing dust-proof fan, including a fan housing 10, a fan inner housing 20 sleeved with the fan housing 10, a copper middle tube 30 installed on the fan inner housing 20, a bearing 40 connected to the inner side of the copper middle tube 30, a plastic silicon steel sheet 50 connected to the outer side of the copper middle tube 30, a fan blade 60 connected to the bearing 40, and a magnetic strip 70 arranged on the fan blade 60 and cooperating with the plastic silicon steel sheet 50. The fan blade 60 includes an axis 61 connected to the bearing 40, a main body disc 62 connected to the axis 61, a main blade 63 connected to the edge of the main body disc 62, and a dust-proof blade 64 for blowing air near the bearing 40 to the outside.

[0045] The presence of the dust-proof blades 64 directly targets dust and foreign matter. By actively capturing and driving away these particles, the dust-proof blades 64 effectively reduce the pressure on the bearing 40, prevent tiny particles from entering the internal precision components and causing increased mechanical friction, thereby extending the service life of the entire system. The introduction of the dust-proof blades 64 forms a protective wall around the bearing 40, which is an extremely important and vulnerable part. As the main blades 63 rotate, the dust-proof blades 64 swing accordingly, blowing the air near the bearing 40 outward and quickly removing any tiny dust particles that approach the bearing 40. This mechanism greatly reduces the chance of dust deposition and avoids the chain reaction caused by increased wear energy consumption and decreased heat conduction efficiency, thereby significantly extending the service life of the fan and even the entire system.

[0046] In addition to preventing dust, the dust blades 64 also help improve air circulation in local areas, promoting faster heat transfer from the heat source to the cooling medium. This is particularly critical under intensive computing or high-load conditions, helping to maintain the device within the ideal operating temperature range, ensuring stable performance output and preventing overheating and shutdown.

[0047] The preventative effect of the dust blades 64 significantly reduces the need for regular cleaning of the fan interior, reducing the need for manual maintenance. This is particularly important for equipment that operates continuously for extended periods of time, allowing users to focus on their business rather than frequently interrupting service for maintenance and inspections, thereby improving overall operational efficiency.

[0048] Considering that the Dust Blade 64 requires no additional energy or complex installation procedures, achieving such excellent results solely through its structural design makes it a highly cost-effective solution. In the long run, reduced failure rates and maintenance costs, as well as the avoidance of premature part replacement or repair expenses, make it a highly attractive option.

[0049] In this embodiment, the dustproof blade 64 is disposed in the middle of the main disc 62 . The middle of the main disc 62 has a thickened portion 65 . The thickness of the thickened portion 65 is thicker than the edge of the main disc 62 .

[0050] The dustproof blade 64 is arranged in the center of the main disc 62, especially in the thickened portion 65, which means that it is closer to the key area of the bearing 40 and can intercept and discharge dust approaching the bearing 40 in the first time.

[0051] In this embodiment, the dust-proof blades 64 are disposed on the thickened portion 65 of the main disc 62 .

[0052] The design of the thickened portion 65 provides a more solid foundation for the entire main disc 62, especially when rotating at high speed, which can offset part of the centrifugal force, prevent deformation or damage, and provide strong support for the dustproof blades 64 and other auxiliary structures.

[0053] In this embodiment, the end of the shaft 61 is connected to the thickened portion 65 .

[0054] The connection between the axis 61 and the thickened portion 65 forms a strong and reliable connection. The increased thickness of the thickened portion 65 provides additional support to ensure that the axis 61 does not deviate or vibrate during high-speed rotation, thereby improving the structural integrity and operational stability of the entire device. This design not only enhances the impact resistance, but also creates a more ideal operating environment for the bearing 40. The thickened portion 65 bears the gravity and rotational torque of the axis 61, effectively sharing the overall load of the main disc 62, ensuring coordination between the various components and avoiding the situation where a single point is subjected to excessive pressure. In this way, all components can evenly distribute the effects of force, extending the overall service life and reducing the wear rate.

[0055] In this embodiment, a first gap 91 exists between the copper middle tube 30 and the main disc 62 . When the dustproof blades 64 rotate, the air near the bearing 40 is blown to the outside through the first gap 91 .

[0056] As dust-proof blades 64 rotate, they effortlessly push the air around bearing 40 outward, creating a natural barrier that blocks intrusive dust and impurities, removing them at their source and protecting bearing 40 from contamination. This naturally formed air curtain effect also helps prevent external impurities from being drawn into the machine, further enhancing the system's self-purification capabilities.

[0057] In this embodiment, there is a second gap 92 between the main blade 63 and the fan inner casing 20, a third gap 93 between the magnetic strip 70 and the fan inner casing 20, a fourth gap 94 between the magnetic strip 70 and the plastic silicon steel sheet 50, and a fifth gap 95 between the plastic silicon steel sheet 50 and the main disc 62. External dust passes through the second gap 92, the third gap 93, the fourth gap 94, the fifth gap 95, and the first gap 91 in sequence and can reach the connection between the bearing 40 and the shaft 61. When the dust-proof blade 64 rotates, the air in the first gap 91 is blown to the second gap 92.

[0058] The multi-level clearance design acts like a maze, presenting numerous challenges to external dust. With each obstacle, airborne particles are gradually filtered, until only the tiniest particles remain and can continue on their way. This continuous filtration process, essentially a high-tech "hourglass," gradually dilutes harmful substances over time until they pose little threat to the proper functioning of bearing 40 and shaft 61. Dust-proof blades 64 are the final and most powerful defense in the maze, ensuring that external dust cannot reach bearing 40.

[0059] In this embodiment, the dust-proof blades 64 are in the shape of straight teeth.

[0060] The straight-toothed dust-blocking blades 64, with their straight-edge profile, generate a more concentrated wind force during rotation, similar to the effect of micro-jets. They can more precisely control the direction of the airflow, effectively capturing and expelling dust that approaches the bearing 40 while minimizing energy loss.

[0061] In this embodiment, the bending direction of the dust-proof blade 64 is opposite to the bending direction of the main blade 63 .

[0062] The reverse curvature design fully exploits the principles of dynamics. The main blades 63 generate the primary airflow, while the dust-blocking blades 64, with their reverse curvature, cleverly harness the kinetic energy of rotation to generate a secondary airflow, enhancing internal cleaning. The two complement each other, creating a highly effective dynamic synergy. While the main blades 63 push air in the forward direction, the reverse curvature of the dust-blocking blades 64 creates a cleansing airflow that pushes fine particulate matter away from the bearing 40 area, preventing accumulation and ensuring internal cleanliness.

[0063] In this embodiment, a positioning ring 80 is further included, and the positioning ring 80 is sleeved on the shaft 61 .

[0064] Locating ring 80 enhances the overall stability and precision of the structure. Slipping over shaft 61, it secures all components together, ensuring they maintain perfect concentricity even at high speeds, reducing vibration and noise and improving overall operational smoothness. Furthermore, it provides additional support for the connection between shaft 61 and other components, preventing loosening and enhancing long-term reliability.

[0065] Compared with the prior art, the present invention has the following beneficial effects:

[0066] The utility model is a dustproof fan with bearing 40. The presence of dustproof blades 64 directly targets dust and foreign matter. By actively capturing and driving away these particles, the dustproof blades 64 effectively reduce the pressure on the bearing 40, avoid the intensification of mechanical friction caused by tiny particles entering the internal precision components, and extend the service life of the entire system. The introduction of dustproof blades 64 forms a protective wall around the extremely important and vulnerable part of the bearing 40. As the main blades 63 rotate, the dustproof blades 64 swing accordingly, blowing the air near the bearing 40 outward, and quickly removing any tiny dust particles approaching the bearing 40. This mechanism greatly reduces the chance of dust deposition, avoids the chain reaction caused by increased wear energy consumption and decreased heat conduction efficiency, and thus significantly extends the service life of the fan and even the entire system.

[0067] In addition to preventing dust, the dust blades 64 also help improve air circulation in local areas, promoting faster heat transfer from the heat source to the cooling medium. This is particularly critical under intensive computing or high-load conditions, helping to maintain the device within the ideal operating temperature range, ensuring stable performance output and preventing overheating and shutdown.

[0068] The preventative effect of the dust blades 64 significantly reduces the need for regular cleaning of the fan interior, reducing the need for manual maintenance. This is particularly important for equipment that operates continuously for extended periods of time, allowing users to focus on their business rather than frequently interrupting service for maintenance and inspections, thereby improving overall operational efficiency.

[0069] Considering that the Dust Blade 64 requires no additional energy or complex installation procedures, achieving such excellent results solely through its structural design makes it a highly cost-effective solution. In the long run, reduced failure rates and maintenance costs, as well as the avoidance of premature part replacement or repair expenses, make it a highly attractive option.

[0070] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bearing dustproof fan, characterized in that: The fan comprises a fan outer shell, a fan inner shell sleeved with the fan outer shell, a copper middle tube installed on the fan inner shell, a bearing connected to the inner side of the copper middle tube, a plastic silicon steel sheet connected to the outer side of the copper middle tube, a fan blade connected to the bearing, and a magnetic strip arranged on the fan blade and matched with the plastic silicon steel sheet. The fan blade comprises an axis connected to the bearing, a main body disc connected to the axis, a main body blade connected to the edge of the main body disc, and a dust-proof blade for blowing air near the bearing to the outside.

2. The bearing dust-proof fan according to claim 1, characterized in that: The dust-proof blades are arranged in the middle of the main disc.

3. The bearing dust-proof fan according to claim 2, characterized in that: The middle portion of the main body disc has a thickened portion, and the thickness of the thickened portion is thicker than the edge of the main body disc.

4. The bearing dust-proof fan according to claim 3, characterized in that: The dust-proof blades are arranged on the thickened portion of the main disc.

5. The bearing dust-proof fan according to claim 4, characterized in that: The end of the axis is connected to the thickened portion.

6. The bearing dust-proof fan according to claim 1, characterized in that: There is a first gap between the copper middle tube and the main disc. When the dustproof blades rotate, the air near the bearing is blown to the outside through the first gap.

7. The bearing dust-proof fan according to claim 6, characterized in that: There is a second gap between the main blade and the fan inner shell, a third gap between the magnetic strip and the fan inner shell, a fourth gap between the magnetic strip and the plastic silicon steel sheet, and a fifth gap between the plastic silicon steel sheet and the main disc. External dust passes through the second gap, the third gap, the fourth gap, the fifth gap, and the first gap in sequence and can reach the connection between the bearing and the axis. When the dust-proof blade rotates, the air in the first gap is blown to the second gap.

8. The bearing dust-proof fan according to claim 1, characterized in that: The dust-proof blades are in a straight tooth shape.

9. The bearing dust-proof fan according to claim 1, characterized in that: The bending direction of the dust-proof blades is opposite to the bending direction of the main blades.

10. The bearing dust-proof fan according to claim 1, characterized in that: It also includes a positioning ring, which is sleeved on the shaft.

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