Long-life heat-dissipation fan hydraulic structure

Abstract

The utility model provides a long -life heat dissipation fan hydraulic structure, this hydraulic structure includes rotor, axle core and hydraulic bearing, is equipped with the axle core mounting seat to the rotor, is fixedly assembled in the inner hole of axle core mounting seat through the interference fit, its axial extension range completely covers the plane where the rotor barycenter is at, and the rotor barycenter is at the intermediate area of hydraulic bearing axial length, the axle core is coaxially worn in the inner hole of hydraulic bearing along the rotor central axis, and the both ends stretch out the port, and the inner hole wall keeps the safety clearance, and the axle core upper end connects the rotor fan blade wheel hub, and the lower end forms the limit cooperation with the heat dissipation fan base support. The utility model discloses through optimizing the installation structure of hydraulic bearing and axle core, makes the rotor barycenter stress point always fall in the support range of hydraulic bearing, avoids the local concentrated wear and tear of axle core and bearing port, effectively promotes fan service life 15%, and simultaneously gives consideration to structural stability, safety clearance and axle core rubber strength demand, and the running performance and durability of heat dissipation fan are optimized.

Description

Technical Field

[0001] This utility model relates to the field of fan structure technology, and in particular to a hydraulic structure for a long-life cooling fan. Background Technology

[0002] In the field of cooling fans, the hydraulic structure is a core component ensuring stable fan operation, and its design directly affects the fan's lifespan. In existing cooling fan hydraulic structures, the rotor's center of gravity is positioned too high. Furthermore, due to the strength requirements of the shaft's rubber coating and the necessary safety clearance, the hydraulic bearing cannot be raised higher, resulting in the axial extension of the hydraulic bearing not completely covering the plane of the rotor's center of gravity. This structural defect causes continuous, localized, concentrated wear at both ends of the shaft and hydraulic bearing during fan operation, significantly accelerating component wear and ultimately leading to a substantial reduction in the overall lifespan of the fan. This fails to meet market demands for long-life cooling fans and has become a critical problem that urgently needs to be solved in current technology. Utility Model Content

[0003] This invention provides a long-life cooling fan hydraulic structure to overcome the deficiencies in the prior art.

[0004] This utility model provides a long-life cooling fan hydraulic structure, including a rotor, a shaft core, and a hydraulic bearing; the rotor is provided with a shaft mounting seat, and the hydraulic bearing is fixedly assembled in the inner hole of the shaft mounting seat, and the axial extension range of the hydraulic bearing completely covers the plane of the rotor's center of gravity; the shaft core is coaxially inserted into the inner hole of the hydraulic bearing along the central axis of the rotor, and both ends of the shaft core extend out of the two end ports of the hydraulic bearing, and a fitting space that meets the safety clearance requirements is maintained between the shaft core and the inner wall of the hydraulic bearing.

[0005] According to the present invention, a long-life cooling fan hydraulic structure is provided, wherein the axial length of the hydraulic bearing is adapted to the position of the rotor's center of gravity, the upper end face of the hydraulic bearing is located above the rotor's center of gravity plane, and the lower end face of the hydraulic bearing is located below the rotor's center of gravity plane, so that the rotor's center of gravity is located in the middle region of the axial length of the hydraulic bearing, ensuring that the force point of the rotor's center of gravity falls completely within the support range of the hydraulic bearing when the fan is running.

[0006] According to the present invention, a long-life cooling fan hydraulic structure is provided, wherein the shaft mounting base and the hydraulic bearing are fixed by an interference fit, and the inner wall of the shaft mounting base is tightly fitted with the outer peripheral wall of the hydraulic bearing to prevent relative displacement between the hydraulic bearing and the rotor when the fan is running at high speed, and to ensure that the center of gravity of the rotor is always in the internal area of ​​the hydraulic bearing.

[0007] According to the present invention, a long-life cooling fan hydraulic structure is provided, wherein the middle region of the shaft core forms a sliding fit with the inner wall of the hydraulic bearing, the upper end of the shaft core is fixedly connected to the fan blade hub of the rotor, and the lower end of the shaft core extends to the bottom of the hydraulic bearing and forms a limiting fit with the base bracket of the cooling fan. Through the coaxial assembly relationship between the shaft core and the hydraulic bearing, the rotation trajectory of the rotor is further constrained, and the wear of the shaft core and the port of the hydraulic bearing is reduced.

[0008] A cooling fan with a long-life hydraulic structure as described above is provided, comprising fan blades, a base bracket, and a long-life hydraulic structure. The fan blades are fixedly connected to the rotor, and the lower end of the shaft core is rotatably engaged with the base bracket. The service life is improved by the precise installation of the hydraulic bearing and the shaft core.

[0009] This utility model provides a long-life cooling fan hydraulic structure. By fixing a hydraulic bearing within the rotor's shaft mounting base, its axial extension completely covers the plane of the rotor's center of gravity, and the rotor's center of gravity is located in the middle region of the hydraulic bearing's axial length. This ensures that the force point of the rotor's center of gravity falls entirely within the support range of the hydraulic bearing during fan operation, fundamentally avoiding localized concentrated wear between the shaft and the hydraulic bearing port. Actual verification shows that this can increase the fan's service life by 15%. The shaft mounting base and hydraulic bearing are fixed with an interference fit, ensuring a tight fit between their walls. This effectively prevents relative displacement between the hydraulic bearing and the rotor during high-speed fan operation, ensuring that the rotor's center of gravity remains within the hydraulic bearing, avoiding operational deviations and additional wear caused by structural loosening. A suitable clearance space is provided between the shaft and the inner wall of the hydraulic bearing to meet safety requirements. Simultaneously, the installation position of the hydraulic bearing avoids the stress area of ​​the shaft's rubber coating, fully meeting the strength requirements of the shaft's rubber coating while ensuring operational safety, achieving a balance between safety performance and structural strength. The middle part of the shaft core forms a sliding fit with the inner wall of the hydraulic bearing, and the lower end forms a limiting fit with the base bracket. This dual fit effectively constrains the rotor's running trajectory, further reduces frictional loss between the shaft core and the hydraulic bearing port, and improves the smoothness of the fan's operation. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the overall structure of the cooling fan with a long-life hydraulic structure provided in this embodiment of the utility model;

[0012] Figure 2 This is a cross-sectional schematic diagram of the hydraulic structure of a conventional cooling fan;

[0013] Figure 3 This is a cross-sectional schematic diagram of the hydraulic structure for a long-life cooling fan provided in an embodiment of this utility model.

[0014] Figure label:

[0015] 1. Shaft core; 2. Hydraulic bearing; 3. Shaft core mounting base; 4. Fan blade; 5. Base bracket; 6. Rotor. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] This application provides a long-life cooling fan hydraulic structure, including a rotor 6, a shaft core 1, and a hydraulic bearing 2; the rotor is provided with a shaft mounting seat 3, and the hydraulic bearing 2 is fixedly assembled in the inner hole of the shaft mounting seat 3, and the axial extension range of the hydraulic bearing 2 completely covers the plane of the rotor's center of gravity; the shaft core 1 is coaxially inserted into the inner hole of the hydraulic bearing 2 along the central axis of the rotor, and both ends of the shaft core 1 extend out of the two end ports of the hydraulic bearing 2, and a fitting space that meets the safety clearance requirements is maintained between the shaft core 1 and the inner hole wall of the hydraulic bearing 2.

[0021] The axial length of the hydraulic bearing 2 is matched with the position of the rotor's center of gravity. The upper end face of the hydraulic bearing 2 is located above the rotor's center of gravity plane, and the lower end face of the hydraulic bearing 2 is located below the rotor's center of gravity plane, so that the rotor's center of gravity is in the middle area of ​​the axial length of the hydraulic bearing 2, ensuring that the force point of the rotor's center of gravity falls completely within the support range of the hydraulic bearing 2 when the fan is running.

[0022] The shaft mounting base 3 and the hydraulic bearing 2 are fixed by an interference fit. The inner wall of the shaft mounting base 3 is tightly fitted with the outer peripheral wall of the hydraulic bearing 2 to prevent relative displacement between the hydraulic bearing 2 and the rotor when the fan is running at high speed, and to ensure that the center of gravity of the rotor is always in the internal area of ​​the hydraulic bearing 2.

[0023] The middle area of ​​the shaft core 1 forms a sliding fit with the inner wall of the hydraulic bearing 2. The upper end of the shaft core 1 is fixedly connected to the hub of the rotor blade 4. The lower end of the shaft core 1 extends to the bottom of the hydraulic bearing 2 and forms a limiting fit with the base bracket 5 of the cooling fan. Through the coaxial assembly relationship between the shaft core 1 and the hydraulic bearing 2, the rotation trajectory of the rotor is further constrained, and the wear of the shaft core 1 and the port of the hydraulic bearing 2 is reduced.

[0024] A cooling fan with a long-life hydraulic structure as described above is provided, comprising a fan blade 4, a base bracket 5, and a long-life hydraulic structure. The fan blade 4 is fixedly connected to the rotor, and the lower end of the shaft core 1 is rotatably engaged with the base bracket 5. The service life is improved by the precise installation of the hydraulic bearing 2 and the shaft core 1.

[0025] The long-life hydraulic structure of this cooling fan achieves low wear and long service life through the precise assembly and synergistic effect of its components. The specific working principle is as follows: First, the hydraulic bearing 2 is fixedly assembled in the inner hole of the rotor's shaft mounting seat 3 using an interference fit, ensuring that the axial extension range of the hydraulic bearing 2 precisely covers the plane of the rotor's center of gravity, placing the rotor's center of gravity in the middle region of the hydraulic bearing 2's axial length. Then, the shaft core 1 is coaxially inserted into the inner hole of the hydraulic bearing 2 along the rotor's central axis. The upper end of the shaft core 1 is fixedly connected to the hub of the rotor's fan blades 4, and the lower end extends below the hydraulic bearing 2, forming a limiting fit with the cooling fan's base bracket 5. Simultaneously, a safe clearance is maintained between the shaft core 1 and the inner wall of the hydraulic bearing 2. When the fan starts, the rotor drives the fan blades 4 to rotate, simultaneously driving the shaft core 1 to rotate coaxially within the inner hole of the hydraulic bearing 2. Because the axial range of the hydraulic bearing 2 completely covers the rotor's center of gravity, the centrifugal force and gravity generated during rotor operation always fall within the support range of the hydraulic bearing 2, avoiding direct friction between the shaft core 1 and the port of the hydraulic bearing 2. The interference fit ensures that there is no relative displacement between the hydraulic bearing 2 and the rotor, maintaining effective coverage of the rotor's center of gravity. The limiting fit between the shaft core 1 and the base bracket 5 further constrains the rotor's operating trajectory, preventing abnormal wear caused by misalignment. Through the complete coverage of the rotor's center of gravity by the hydraulic bearing 2, the structural stability of the interference fit, and the precise limiting of the shaft core 1, a multi-dimensional wear protection system is formed, effectively reducing component wear during fan operation and ultimately achieving the core goal of long life and stable operation of the cooling fan.

[0026] This utility model provides a long-life cooling fan hydraulic structure. By fixing a hydraulic bearing within the rotor's shaft mounting base, its axial extension completely covers the plane of the rotor's center of gravity, and the rotor's center of gravity is located in the middle region of the hydraulic bearing's axial length. This ensures that the force point of the rotor's center of gravity falls entirely within the support range of the hydraulic bearing during fan operation, fundamentally avoiding localized concentrated wear between the shaft and the hydraulic bearing port. Actual verification shows that this can increase the fan's service life by 15%. The shaft mounting base and hydraulic bearing are fixed with an interference fit, ensuring a tight fit between their walls. This effectively prevents relative displacement between the hydraulic bearing and the rotor during high-speed fan operation, ensuring that the rotor's center of gravity remains within the hydraulic bearing, avoiding operational deviations and additional wear caused by structural loosening. A suitable clearance space is provided between the shaft and the inner wall of the hydraulic bearing to meet safety requirements. Simultaneously, the installation position of the hydraulic bearing avoids the stress area of ​​the shaft's rubber coating, fully meeting the strength requirements of the shaft's rubber coating while ensuring operational safety, achieving a balance between safety performance and structural strength. The middle part of the shaft core forms a sliding fit with the inner wall of the hydraulic bearing, and the lower end forms a limiting fit with the base bracket. This dual fit effectively constrains the rotor's running trajectory, further reduces frictional loss between the shaft core and the hydraulic bearing port, and improves the smoothness of the fan's operation.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A long-life cooling fan hydraulic structure, characterized in that, The device includes a rotor, a shaft core, and a hydraulic bearing. The rotor is provided with a shaft mounting base, and the hydraulic bearing is fixedly assembled in the inner hole of the shaft mounting base, with the axial extension range of the hydraulic bearing completely covering the plane of the rotor's center of gravity. The shaft core is coaxially inserted into the inner hole of the hydraulic bearing along the central axis of the rotor, with both ends of the shaft core extending out of the two ends of the hydraulic bearing, and a fitting space is maintained between the shaft core and the inner wall of the hydraulic bearing to meet the safety clearance requirements.

2. The long-life cooling fan hydraulic structure according to claim 1, characterized in that, The axial length of the hydraulic bearing is adapted to the position of the rotor's center of gravity. The upper end face of the hydraulic bearing is located above the rotor's center of gravity plane, and the lower end face of the hydraulic bearing is located below the rotor's center of gravity plane, so that the rotor's center of gravity is in the middle region of the hydraulic bearing's axial length, ensuring that the force point of the rotor's center of gravity falls completely within the support range of the hydraulic bearing when the fan is running.

3. The long-life cooling fan hydraulic structure according to claim 1, characterized in that, The shaft mounting base and the hydraulic bearing are fixed by an interference fit. The inner wall of the shaft mounting base is tightly fitted with the outer peripheral wall of the hydraulic bearing to prevent relative displacement between the hydraulic bearing and the rotor when the fan is running at high speed, and to ensure that the center of gravity of the rotor is always in the internal area of ​​the hydraulic bearing.

4. The long-life cooling fan hydraulic structure according to claim 1, characterized in that, The central region of the shaft core forms a sliding fit with the inner wall of the hydraulic bearing. The upper end of the shaft core is fixedly connected to the rotor's fan blade hub, and the lower end of the shaft core extends to the bottom of the hydraulic bearing and forms a limiting fit with the base bracket of the cooling fan. Through the coaxial assembly relationship between the shaft core and the hydraulic bearing, the rotor's operating trajectory is further constrained, and the wear of the shaft core and the hydraulic bearing port is reduced.

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