TWI494511B - Oil-retaining bearing fan structure - Google Patents

Description

Oil bearing fan structure improvement

The invention provides an improvement of the structure of an oil-containing bearing fan, in particular to an oil-bearing bearing fan structure which can reduce wear and reduce running noise and vibration, and improve service life.

According to the fact, the use of electronic information products (such as computers) is becoming more and more popular and widely used. As demand drives the rapid development of electronic information industry technology, the development of electronic information is increasing toward the speed of execution and the increase in access capacity. The components in the aforementioned electronic information products often have high temperatures accompanying high-speed operation.

Taking a computer mainframe as an example, the internal central processing unit (CPU) generates a large amount of heat. In addition, when the central processing unit gradually increases in heat, the performance is reduced, and when the heat accumulation is higher than its allowable limit, Will force the computer to crash, in severe cases is more likely to cause damage; and, in order to solve the problem of electromagnetic radiation, usually the chassis is used to close the computer, so that the central processing unit and other heating components (or The rapid export of the thermal energy of the component has become an important issue.

Generally, the central processing unit is configured to solve the heat dissipation method by disposing a heat sink and a heat dissipation fan thereon, and one side of the heat sink is configured with a plurality of fins on the other side of the heat sink (there is no fin) The surface of the sheet is in direct contact with the central processing unit to conduct thermal energy to the fin end and radiate The heat and the fan force the airflow to dissipate the heat quickly.

As shown in FIG. 1 , it is a three-dimensional sectional view of a conventional oil-impregnated bearing cooling fan. The cooling fan 1 mainly has a fan base 11 , and the fan base 11 has a shaft cylinder 111 therein. A fan 12 is disposed on the fan base 11, and a fan wheel 13 is disposed on the fan base 11. The outer ring of the fan wheel 13 is provided with a plurality of blades 131, and an inner core 132 extends from the inner side. The shaft 132 is disposed through the bearing. 12 and the buckle positioning, the bearing 12 and the shaft 132 are filled with the oil film 121, and the position of the fan base 11 and the bearing 12 and the fan wheel 13 are adjusted to the optimal operating position for heat dissipation. When the fan 1 is in operation, the shaft 132 of the fan 1 can be stably rotated on the bearing 12 by the oil film 121. Therefore, the operating position of the shaft 132 relative to the bearing 12 is supported only by the supporting force of the oil film 121, but the cooling fan 1 has the oil film 121. The generated supporting force is still less than the eccentric force generated during its operation; therefore, there is still a frictional collision between the axial center 132 and the bearing 12, or when the cooling fan 1 is subjected to an external force, the external force colliding force is also Will shift its axis 132 position, When the shaft 132 is caused to collide with the bearing 12 to generate vibration, the heat-dissipating fan 1 generates noise and vibration noise due to its positional displacement or collision, and at the same time increases its axis 132 and The wear condition of the bearing 12 affects the service life of the cooling fan 1; or the supporting force of the oil film 121 thereof can return the axis 132 to the optimal operating position, but the oil film 121 takes a long time after being squeezed. The response time is relatively increased relative to the return of the axis 132 to the optimal operating position, and the time of noise and wear is relatively prolonged; Therefore, the prior art has the following disadvantages: 1. It is easy to generate vibration and noise; 2. The wear condition is increased; 3. The noise is generated for a long time; 4. The service life is affected.

Therefore, how to solve the above problems and problems in the past, that is, the inventors of this case and the relevant manufacturers engaged in this industry are eager to study the direction of improvement.

Accordingly, in order to effectively solve the above problems, the main object of the present invention is to provide an improved structure of an oil-impregnated bearing fan which can reduce wear and reduce running noise and vibration, and improve service life.

Another object of the present invention is to provide an improved structure of an oil-impregnated bearing fan that can quickly restore fan operating stability.

In order to achieve the above object, the present invention provides an improved structure of an oil-impregnated bearing fan, comprising a fan base, an oil bearing and a wheel, the fan base having a shaft on one side thereof, the shaft having a bearing hole and The oil bearing is disposed in the bearing hole, and the oil bearing has an axial hole, the fan wheel has a plurality of blades and an axis, and the axis is pivoted on the shaft Inside the core hole; thereby, the magnetic element can generate a magnetic attraction force to the shaft through the magnetic element, so that the shaft can quickly return to the optimal operating position, thereby reducing wear and reducing running noise and vibration, and improving the service life. Efficacy; therefore the present invention has the following advantages: 1. Reduce the generation of vibration and noise; 2. Reduce the occurrence of wear; 3. Reduce the noise generation time; 4. Improve the service life.

The above object of the present invention, as well as its structural and functional features, will be described in accordance with the preferred embodiments of the drawings.

2 and 3 are a perspective view and a partial perspective cross-sectional view of a first preferred embodiment of the present invention, including a fan base 2, an oil bearing 3 and a fan wheel 4, which One side of the fan base 2 has a shaft cylinder 21 having a bearing hole 211 therein, and the shaft barrel 21 is provided with at least one magnetic element 212, and the magnetic element 212 can be shaped according to the shaft barrel 21 When the shaft cylinder 21 is molded, the plurality of magnetic elements 212 may be completely covered according to the shape of the shaft cylinder 21 and then formed when the shaft cylinder 21 is molded. In the present embodiment, the shaft cylinder 21 is provided. The single magnetic element 212 is an embodiment. The magnetic element 212 can be any one of a magnet and a magnetic powder and a magnet and a magnetic element. The oil bearing 3 is disposed in the bearing hole 211. The oil bearing 3 has an axis. The core hole 31 has a plurality of blades 41 and a shaft center 42. The shaft center 42 is pivotally disposed in the shaft hole 31, and an oil film is disposed between the shaft center 42 and the shaft hole 31. The hydraulic layer, wherein the shaft core 42 is disposed in the shaft hole 31, the fan base 2 and the oil are required to be 3 and 4 are bearing when the impeller to adjust the position of the test optimal operation position and the position of the adjustment, the bag 21 of the barrel The magnetic element 212 is provided with a magnetic absorbing force on its axis 42 and a supporting force with the hydraulic layer on its axis 42 so that it can transmit its magnetic attraction force and the supporting force of the hydraulic layer. The shaft center 42 is effectively positioned at the optimal operating position, and the fan wheel 4 can maintain its axis 42 at the optimal operating position through its magnetic attraction force during operation, and raise the axial center 42 and the oil-impregnated bearing. 3 running stability to reduce wear and reduce running noise and vibration, and improve the service life; also, if the oil bearing fan structure is improved by external force collision, the external force collision force will make the axis 42 positional deviation Moving, even causing its axis 42 to collide with the oil-impregnated bearing 3 to generate vibration. At this time, the magnetic attraction force of the magnetic member 212 can also quickly return the shaft center 42 to the optimal operating position to reduce wear and Reduce running noise and vibration and increase service life.

Please refer to FIG. 4 and FIG. 5, which are perspective sectional views and partial perspective cross-sectional views of the second preferred embodiment of the present invention, which are substantially the same as the components and the connection relationship and operation of the previous embodiment. The same components and component symbols are described, but the difference between the preferred embodiments is that the arrangement of the magnetic components 212 can be set according to the style of the shaft cylinder 21, and the magnetic component 212 can also be arranged according to the shaft cylinder. The bearing hole 211 of the 21 or the outer wall is disposed at a position and is formed when the shaft tube 21 is formed. In the embodiment, the shaft 21 is formed by covering the magnetic element 212, and the magnetic element 212 is open to the side. The bearing hole 211 is pivoted in the shaft hole 31, and the hydraulic layer is disposed between the shaft center 42 and the shaft hole 31, and the fan base 2 and the oil bearing 3 are required to be Fan wheel 4 The mutual position test is adjusted to the optimal operation position, and the magnetic element 212 of the shaft cylinder 21 is provided with a magnetic adsorption force to the axial center 42 and a supporting force of the hydraulic layer, so that the magnetic adsorption force can be transmitted through The supporting force of the hydraulic layer causes the axial center 42 to be effectively positioned at the optimal operating position, and when the fan wheel 4 is in operation, the axis 42 is maintained at the optimal operating position through its magnetic attraction force, which can be improved. The stability of the operation between the shaft 42 and the oil-impregnated bearing 3 is to reduce wear and reduce running noise and vibration, and to improve the service life; and if the oil-bearing bearing fan structure is improved by the external force, the shaft barrel 21 is provided. The magnetic element 212 can quickly return the shaft 42 to the optimal operating position through the magnetic attraction force to reduce wear and reduce running noise and vibration, and improve the service life.

Moreover, if the fan device is subjected to an external force, the impact force of the external force may shift the position of the axis 42 or even cause the axis 42 to collide with the oil-impregnated bearing 3 to generate vibration. At this time, the magnetic element may also be transmitted. The magnetic attraction force described in 212 causes the shaft center 42 to quickly return to the optimum operating position to reduce wear and reduce running noise and vibration, and to increase the service life.

6 and FIG. 7 are perspective sectional views and partial perspective cross-sectional views of the third preferred embodiment of the present invention, which are substantially identical to the components and connections of the previous embodiment. The same components and component symbols are not described, but the difference between the preferred embodiment is that the shaft 21 is provided with the magnetic component 212, and in the present embodiment, the magnetic component 212 is side. Corresponding to the opening of the outer wall of the shaft cylinder 21 as an embodiment, the shaft core 42 is also positioned at the optimal operating position through the magnetic element 212, and on the fan wheel 4 thereof. During operation, the shaft 42 can be maintained at the optimal operating position by its magnetic attraction force, thereby improving the stability of operation between the shaft 42 and the oil-impregnated bearing 3, thereby reducing wear and reducing running noise and vibration, and improving Service life.

In summary, the structure of the oil-impregnated bearing fan of the present invention is improved in use, in order to achieve its efficacy and purpose, the invention is an invention with excellent practicability, and is an application for conforming to the invention patent, and is applied according to law. I hope that the trial committee will grant this case as soon as possible to protect the inventor's hard work. If there is any doubt in the trial committee, please do not hesitate to give instructions to the inventor, and the inventor will try his best to cooperate with him.

2‧‧‧Fan base

21‧‧‧ shaft tube

211‧‧‧ bearing hole

212‧‧‧Magnetic components

3‧‧‧ oil bearing

31‧‧‧Axis hole

4‧‧‧fan wheel

41‧‧‧ blades

4‧‧‧Axis

1 is a perspective sectional view of a first embodiment of the present invention; FIG. 3 is a perspective sectional view of a first preferred embodiment of the present invention; FIG. 3 is a partial perspective sectional view of a first preferred embodiment of the present invention; A cross-sectional view of a second preferred embodiment of the present invention; a fifth perspective view of a second preferred embodiment of the present invention; and a sixth perspective view of a third preferred embodiment of the present invention; A partial perspective cross-sectional view of a third preferred embodiment of the invention.

2‧‧‧Fan base

21‧‧‧ shaft tube

211‧‧‧ bearing hole

212‧‧‧Magnetic components

3‧‧‧ oil bearing

31‧‧‧Axis hole

4‧‧‧fan wheel

41‧‧‧ blades

42‧‧‧Axis

Claims (6)

The invention relates to an improved structure of an oil-containing bearing fan, comprising: a fan base having a shaft cylinder on one side, the shaft cylinder having a bearing hole and an inner wall, and the shaft cylinder is formed with an accommodating space, and the accommodating space is axially formed The inner side wall of the shaft cylinder is axially recessed on the inner wall and does not penetrate the top end of the shaft cylinder, and at least one magnetic component is disposed in the accommodating space; an oil bearing is disposed in the bearing hole, and The oil bearing has an axial hole extending along a length of the oil bearing, and the magnetic element is disposed along a length of the receiving space; a fan wheel having a plurality of blades and an axis, The shaft center is pivotally disposed in the shaft hole, and the magnetic element is disposed opposite to the axial side and adsorbs the shaft center. The oil-impregnated bearing fan structure according to claim 1, wherein the shaft core and the shaft hole have a hydraulic layer. The structure of the oil-impregnated bearing fan according to claim 1, wherein the magnetic element is any one of a magnet and a magnetic powder and a magnet and a magnetic element. The oil-impregnated bearing fan structure according to claim 1, wherein the shaft cylinder integrally includes the magnetic element. The oil-impregnated bearing fan structure according to claim 1, wherein the magnetic element side is open to the bearing hole. The structure of the oil-impregnated bearing fan according to claim 1, wherein one side of the magnetic element is open to the outer wall of the barrel.