A cooling fan

Abstract

The invention discloses an air blower facilitating heat dissipation, which can efficiently avoid high temperature of bearings, and overcomes the defects that the temperature of the bearing parts of the air blower in the prior art becomes too high easily. The air blower facilitating heat dissipation comprises a machine casing, an impeller and a motor, wherein an air outlet and an air inlet are formed in the machine casing, the impeller is connected with a rotating shaft of the motor through a transmission shaft, bearings and a coupler, the bearings are arranged in a bearing box, the openings of the two ends of the bearing box are sealed by the bearings, so that a sealed cavity is formed in the bearing box, and lubricating grease is filled in the sealed cavity. The air blower is applicable to the situations to which the conventional air blower is applicable, and has the advantages of low wastage of the lubricating grease, capability of efficiently avoiding the high temperature of the bearings and the like.

Description

technical field [0001] The invention relates to the field of fluid machinery, in particular to a fan. Background technique [0002] The fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. Fans are widely used in production, especially in places where exhaust and blowing are required. The impeller of the fan is driven by transmission parts such as bearings. Due to high-speed rotation, friction and vibration of the bearings, it is easy to generate heat and heat up. Once the temperature of the bearings is too high, many negative effects will occur, such as reduced assembly clearance, increased contact friction, Further increase the heat production, and the annealing temperature of ordinary bearings is usually around 95 degrees. When the temperature is too high, the toughness will decrease, and the bearings will be easily damaged. In the treatment of bearing cooling in the existing fans, ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the bearing part of the fan in the prior art is prone to overheating, and to provide a cooling fan that can effectively prevent the bearing temperature from being too high.

[0005] Another object of the present invention is to solve the problem of large evaporation loss of lubricating grease in the fan in the prior art, and to provide a cooling fan capable of reducing the loss of lubricating grease.

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