TWM636979U - Fan oil supplement structure - Google Patents

Abstract

The invention provides a fan oil replenishing structure, including a shaft seat and at least one oil storage part, a hollow shaft tube protrudes from the middle of the shaft seat, a bearing hole and at least one side wall groove are arranged in the shaft tube, and the bearing An oil bearing is arranged in the hole, and the oil bearing is pivoted with the shaft center of a fan wheel. The oil storage part is arranged in the side wall groove of the shaft cylinder, and the oil storage part absorbs the oil bearing and throws it out. Return lubricating oil to maintain the oil storage capacity, and properly release the lubricating oil to the oil bearing to achieve the oil replenishment effect to prolong the service life.

Description

Fan Oil Supplement Structure

This creation relates to a fan, especially a fan oil supply structure.

The fan is one of the key components of the heat dissipation system. Improving the operating life and reliability of the fan is very important to ensure the stable operation of the system. The lubricating design effect of the bearing of the fan has a more important influence on the service life of the fan and the noise level during operation: because the bearing lubrication effect of the fan is not good, it will cause the wear of the bearing, thereby reducing the service life of the fan and increasing The noise of the fan when it is running. Since the general bearing is mainly used as a shaft pivoting with the fan to reduce the wear of the shaft or the corresponding pivoting parts caused by the direct rotation of the shaft and other parts, and the more common bearings are generally oil-impregnated bearings (sleeve bearings) with low Low cost and low noise at the beginning of operation, so fans (such as axial flow fans or centrifugal fans) widely use oil-impregnated bearings. And the oil-impregnated bearing is a kind of self-lubricating bearing impregnated with lubricating oil in its own pores. Generally, metal or alloy is sintered to form a porous structure for storing lubricating oil. The porosity of the oil-impregnated bearing determines the content of lubricating oil retained in the oil-impregnated bearing. However, its porosity is limited by its manufacturing process, so the content of lubricating oil is limited. When the fan has been running for a period of time, the lubricating oil in the oil bearing will be thrown out due to the centrifugal force as the rotating shaft rotates, and when the oil content of the lubricating oil in the oil bearing drops to a certain level, the oil bearing and the rotating shaft There is more metal contact between them, which leads to a sharp increase in the wear and tear between them, which shortens the performance and service life of the oil-impregnated bearing. In severe cases, all the lubricating oil is thrown out and lost, resulting in a lack of lubricating oil between the bearing and the shaft. , resulting in the problem that the oil bearing and the shaft are stuck and the entire fan is damaged. According to, in order to solve the above-mentioned problem of throwing out the lubricating oil of the oil bearing due to the physical characteristics, the industry is equipped with a plurality of grooves arranged at intervals on the inner wall or inner bottom of the shaft cylinder, and the oil content is increased by these grooves . Although such a conventional method seems to prolong the service life of the oil-impregnated bearing, it cannot effectively solve the problem that the lubricating oil of the oil-impregnated bearing is thrown out and gradually lacks lubricating oil when the fan is running at high speed. In addition, when assembling or transporting the mobile fan, the lubricating oil in the grooves will leak to the outside of the shaft tube due to movement such as turning over, tilting or shaking, resulting in the leakage of the lubricating oil increased in the original grooves, resulting in no redundant The lubricating oil returns to the oil-impregnated bearing, which in turn causes the problem of reducing the service life of the fan and the oil-impregnated bearing. Therefore, how to maintain the oil content of lubricating oil of oil-impregnated bearings and prolong the service life has always been a key issue in the field of oil-impregnated bearing design.

In order to improve the above problems, one purpose of this invention is to provide a fan oil supply structure that can maintain oil content and continue to replenish oil to maintain the oil content of the oil bearing, so as to prolong the service life of the oil bearing. Another purpose of the invention is to provide a fan oil supply structure that can prolong the service life of the fan. In order to achieve the above purpose, the invention provides a fan oil supply structure, including: a shaft seat, a hollow shaft tube protrudes from the middle of the shaft tube, a bearing hole and at least one side wall groove are arranged in the shaft tube, and the bearing hole An oil bearing is arranged inside, and the oil bearing is pivoted with a fan wheel with an axis; at least one oil storage part is arranged in the side wall groove of the shaft cylinder, and the oil storage part is porous or sponge Or foam or foam structure, which can be used to absorb and store lubricating oil. With the arrangement of the oil storage part in this invention, in addition to storing and storing a certain amount of lubricating oil, it can also absorb the lubricating oil thrown back by the oil bearing, and release the lubricating oil to the oil bearing to replenish oil when appropriate Efficacy, so as to prolong the service life.

The above-mentioned purpose of this creation and its structural and functional characteristics will be described according to the preferred embodiments of the accompanying drawings. The invention provides a fan oil replenishment structure. Please refer to Figures 1 and 2A. The fan oil supply structure includes a shaft seat 11 and at least one oil storage component 21. In this embodiment, the shaft seat 11 includes a frame 10 for the fan 1 (such as an axial flow fan and a centrifugal fan). The shaft seat 11 provided inside is illustrated, and the shaft seat 11 is pivotally arranged with a fan wheel 12 composed of a plurality of blades 121 contained in the frame body 10 . However, it is not limited thereto. In practice, the shaft seat 11 can also be used as the shaft seat 11 of the centrifugal fan 1 or the shaft seat 11 of the frameless fan 1 . A hollow shaft cylinder 111 protrudes from the middle of the shaft seat 11, and a bearing hole 114 is provided in the shaft cylinder 111, and an oil-impregnated bearing 14 (porous bearing) is arranged in the bearing hole 114, and the oil-impregnated bearing 14 is connected with the The fan wheel 12 has an axis 122 pivotally arranged, and there is a lubricating gap 16 between the oil-impregnated bearing 14 and the axis 122 for lubricating and separating the metal contact between the oil-impregnated bearing 14 and the axis 122 friction. And a stator 15 is sheathed on the outer side of the shaft tube 111, the fan wheel 12 is set on the periphery of the stator 15 of the shaft tube 111, and a magnetic part 13 (such as a magnet) is provided on the inner side of the shaft tube 111 to be inductive with the stator 15. excitation. Referring back to Figures 1 and 2A, at least one bottom wall groove 1121 and at least one side wall groove 1131 are respectively provided on the inner surface of the shaft cylinder 111. In this embodiment, the side wall groove 1131 and the bottom wall groove 1121 There are a plurality of intervals arranged on the inner wall and inner bottom of the bearing hole 114, that is, the elongated side wall grooves 1131 are arranged axially (that is, in a direction parallel to the axis 122) at intervals in the bearing hole. 114, and is located adjacent to or in contact with the outer side of the oil-impregnated bearing 14, each of the side wall grooves 1131 has an upper opening 1132 and a lower opening 1133 respectively located at the upper and lower ends of the side wall groove 1131. The bottom wall grooves 1121 are radially spaced on the inner bottom of the bearing hole 114 , and are located below the bottom surface of the adjacent oil-impregnated bearing 14 . In another embodiment, the bottom wall groove 1121 may also be omitted. Referring to Figures 1 and 2A, the oil storage component 21 is arranged in the side wall groove 1131 of the shaft cylinder 111 and is made of an oil-absorbing material. The adsorbing material is a porous structure or a sponge structure or a foam structure or The foam structure can be used to absorb or store lubricating oil. And in this embodiment, the oil storage parts 21 are plural, and match the number and shape of the corresponding side wall grooves 1131, that is, the elongated oil storage parts 21 are embedded (inserted) in the side walls In the groove 1131, the upper side and the lower side of each oil storage part 21 are respectively located in the upper opening 1132 and the lower opening 1133 of each side wall groove 1131, and the outer surface of the oil storage part 21 is flush or slightly higher. on the side wall groove 1131 . In addition, the oil storage part 21 itself has been impregnated with lubricating oil before the actual assembly of the present invention, which can be replenished to the oil-impregnated bearing 14 in due time. Furthermore, because the oil storage component 21 is arranged in the corresponding sidewall groove 1131 as a backup oil storage to increase the oil storage capacity. In addition, during the process of assembling or transporting the mobile fan, the oil storage part 21 absorbs and stores (contains) the leaked (overflowed) lubricating oil to prevent the lubricating oil in the shaft tube 111 from leaking to the outside of the shaft tube 111, Such setting can avoid the problem of lubricating oil leakage when the fan 1 moves (such as flipping or shaking). In addition, generally speaking, the shaft center 122 of the fan wheel 12 will generate high temperature during high-speed operation, so that the lubricating oil in the lubricating gap 16 will be affected by the high temperature and the damage will be reduced. However, in this case, the lubricating oil consumed by the oil-impregnated bearing 14 can be supplemented in good time through the oil storage part 21, so that the oil-impregnated bearing 14 has enough lubricating oil to keep running between the shaft center 122. When the fan wheel 12 of the fan 1 was running, the lubricating oil in the oil-impregnated bearing 14 would overflow the lubricating gap 16 between the shaft center 122 and the oil-impregnated bearing 14, from the shaft center 122 of the fan wheel 12 to the oil-containing The bearings 14 play a lubricating role, and the excess lubricating oil will be thrown out by the centrifugal force generated by the rotation of the shaft center 122 of the fan wheel 12, so that the thrown lubricating oil will overflow upwards along the lubricating gap 16 to the oily bearing 14 Then it is absorbed and stored by the oil storage parts 21, and then the lubricating oil absorbed and returned by the oil storage parts 21 will reach the maximum value due to its own gravity and/or oil content and/or during operation Shake down and properly release oil through the bottom wall grooves 1121 or directly add oil to the oil bearing 14 to achieve the effect of oil replenishment, so as to continuously recover leaking (overflow) oil and oil replenishment to ensure that the shaft center 122 and There is lubricating oil between the oil-impregnated bearings 14 for lubrication at all times, so as to improve the service life of the oil-impregnated bearings 14 and reduce the generation of noise. Although the above-mentioned side wall grooves 1131 and the oil storage parts 21 are elongated in this case. But not limited thereto, in another embodiment, the side wall groove 1131 and the oil storage components 21 may also be polygonal or irregular. In an alternative embodiment, referring to FIG. 2B, the inner surface of the shaft cylinder 111 is provided with a side wall circular groove 1134, which is recessed on the inner side wall of the bearing hole 114 along the inner periphery of the shaft cylinder 111. The side wall circular groove 1134 It is located between the upper opening 1132 of the sidewall grooves 1131 and the top end of the shaft cylinder 111 , and communicates with the upper opening 1132 opposite to the sidewall groove 1131 . And the side wall circular groove 1134 is provided with a circular oil storage part 22, the lower side of the circular oil storage part 22 is in contact with the upper side of the oil storage parts 21 accommodated in the side wall grooves 1131 In this way, more lubricating oil can be obtained through the circular oil storage part 22 and the oil storage parts 21, and the lubricating oil thrown back can be provided to the oil bearing 14 in time to extend the oil bearing 14 service life. Although the above alternative embodiment, the circular oil storage part 22 and the oil storage parts 21 are separate and independent components connected as a whole. But not limited thereto, in other alternative embodiments, the circular oil storage part 22 and the oil storage parts 21 can also be provided as a single member integrally formed. Therefore, through the design of the fan oil replenishment structure of this invention, a considerable amount of oil storage can be preserved or stored (keep) by utilizing the characteristics of the oil storage part 21 as a porous structure or a sponge structure or a foam structure or a foam structure. Oil (lubricating oil) prevents the fan structure from being thrown out and leaking due to the physical characteristics of rotation, and can also absorb the lubricating oil thrown out by the shaft 122 of the oily bearing 14 and recycle it and release it to the oily bearing properly, so that the oily bearing Under long-term operation, the shaft center 122 is separated from each other by the oil film of lubricating oil to reduce the chance of metal contact friction (wear) between the shaft center 122 and the oil bearing 14, so as to effectively increase the service life and reduce Noise effect.

1: fan 10: frame 11: shaft seat 111: Shaft barrel 1121: Bottom wall groove 1131: side wall groove 1132: Upper opening 1133: Lower opening 1134: side wall circular groove 114: bearing hole 12: fan wheel 121: blade 122: axis 13: Magnetic parts 14: Oil bearing 15: Stator 16: Lubrication gap 21:Oil storage parts 22: Round oil storage part

Figure 1 is a cross-section and partially enlarged schematic diagram of the fan assembly of this creation. Fig. 2A is a schematic diagram of three-dimensional decomposition of the fan oil supply structure of this creation. Figure 2B is a three-dimensional exploded schematic view of the fan oil supply structure of an alternative embodiment of the present invention.

1: fan

10: frame

11: shaft seat

111: Shaft barrel

1121: Bottom wall groove

1131: side wall groove

12: fan wheel

121: blade

122: axis

13: Magnetic parts

14: Oil bearing

15: Stator

16: Lubrication gap

21:Oil storage parts

Claims (6)

A fan oil replenishment structure, comprising: A shaft seat, the middle of which protrudes from a hollow shaft tube, the shaft tube has a bearing hole and at least one side wall groove, and an oil bearing is arranged in the bearing hole, and the oil bearing system has a shaft with a fan wheel Mind-set; and At least one oil storage part is arranged in the groove of the side wall of the shaft cylinder, and a considerable amount of oil storage can be stored by the oil storage part, and the lubricating oil thrown out from the oil-impregnated bearing and the shaft can be absorbed by the oil storage part. It is recovered and stored with oil, and the lubricating oil is properly released to the oil-impregnated bearing for lubrication. The fan oil supply structure described in item 1 of the scope of the patent application, wherein the inner surface of the shaft cylinder is provided with a plurality of long strip-shaped side wall grooves which are arranged at intervals from each other, and a plurality of long strip-shaped grooves are arranged in the side wall grooves. Shaped oil storage parts. The fan oil supply structure described in item 2 of the scope of the patent application, wherein the inner surface of the shaft cylinder is provided with a plurality of bottom wall grooves which are spaced apart from each other. The fan oil supply structure as described in item 2 of the scope of the patent application, wherein the inner surface of the shaft cylinder is provided with a sidewall circular groove that is recessed on the inner side of the bearing hole along the inner periphery of the shaft cylinder, and is located on the sidewalls The tops of the grooves are connected to each other, and a circular oil storage part is arranged in the side wall circular groove to contact with the upper side of the oil storage parts. The fan oil supply structure described in item 1 of the scope of the patent application, wherein the oil storage part is made of an oil-absorbing material, and the absorbing material is a porous structure or a sponge structure or a foam structure or a foam structure. The fan oil supply structure described in item 4 of the scope of the patent application, wherein the circular oil storage part and the oil storage parts are integrally formed components or separate independent components.

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