Heat dissipation fan with multiple oil return functions

Abstract

The invention provides a heat dissipation fan with multiple oil return functions. The heat dissipation fan comprises a fixed seat, a fan blade and a stator, wherein a shaft sleeve is arranged in the center of the fixed seat, an inserting hole is formed in the center of the stator, the shaft sleeve is inserted into the inserting hole to enable the stator to sleeve outside the shaft sleeve, and therotating shaft of the fan blade is installed in the shaft sleeve through a bearing; the inner wall of the inserting hole is connected with an oil baffle ring, and the oil baffle ring is positioned above the shaft sleeve and sleeves outside the rotating shaft; and a plurality of oil return top grooves are formed in the top surface of the bearing, a plurality of oil return side grooves are formed inthe side face, the inner ends of the oil return top grooves communicate with bearing holes of the bearings, and the outer ends of the oil return top grooves communicate with the upper ends of the oilreturn side grooves. According to the heat dissipation fan, the oil baffle ring can block most lubricating oil thrown out from the opening of the shaft sleeve, the blocked lubricating oil falls backto the surface of the bearing and reenters the gap between the bearing and the rotating shaft sequentially along the bottom gaps among the oil return top grooves, the oil return side grooves, the bearing and the shaft sleeve, so that the oil return function is realized, and the lubricating oil is reduced from being thrown out.

Description

technical field [0001] The invention relates to the technical field of fans, in particular to a cooling fan with multiple oil returns. Background technique [0002] There is usually lubricating oil in the cooling fan, and the lubricating oil is used to reduce the friction between the rotating shaft and the bearing. When the cooling fan is in operation, the rotating shaft will rotate at a high speed, causing the lubricating oil to be thrown out, causing the electronic products around the cooling fan to stick to oil, affecting the operation of the electronic products. At the same time, as the lubricating oil is thrown out, the stock of lubricating oil will become less and less, the friction between the rotating shaft and the bearing will increase, and the cooling fan will not operate smoothly. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a cooling fan with multiple oil returns based on the above-mentioned defic...

AI Technical Summary

Problems solved by technology

When the cooling fan is in operation, the rotating shaft will rotate at a high speed, causing the lubricating oil to be thrown out, causing the electronic products around the cooling fan to stick to oil, affecting the operation of electronic products

At the same time, as the lubricating oil is thrown out, the stock of lubricating oil will become less and less, the friction between the rotating shaft and the bearing will increase, and the cooling fan will not operate smoothly.

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