Ultrahigh-pressure low-noise cooling fan

Abstract

The invention provides an ultrahigh-pressure low-noise cooling fan which comprises a fan shell, a motor stator is fixedly arranged in the fan shell, and a rotating shaft is arranged at the axis of the motor stator through a bearing. The upper end of the rotating shaft is fixedly connected with a rotor shell through a rotating shaft fixing base, and a motor rotor corresponding to the motor stator in position is arranged on the inner side of the rotor shell and used for driving the rotating shaft to rotate. An impeller is fixedly arranged on the outer side of the rotor shell and is driven by the rotating shaft to rotate. The impeller is provided with a rim, and the upper edge and / or the lower edge of the rim are / is connected with the fan shell in a dynamic sealing mode. According to the dynamic seal impeller of the cooling fan, when the fan rotates, gas backflow can be effectively avoided, and the air supply efficiency is improved. In addition, the vibration reduction structure arranged on the fan can greatly reduce the generation of vibration and the transmission efficiency of the vibration, so that noise is reduced.

Description

technical field [0001] The invention relates to the technical field of cooling fans, in particular to an ultra-high pressure and low noise cooling fan. Background technique [0002] In modern society, cooling fans are widely used, whether it is large-scale machinery, computer room mainframes or civilian computers, cooling fans can be seen everywhere. The heat dissipation performance of the cooling fan is also a very important indicator for the device, and it is very important for the operation of the device. At present, when most cooling fans on the market reach a high speed, the pressure difference between the air inlet and the air outlet often causes the air to flow back, the air intake at the air inlet decreases, and the heat dissipation performance is greatly reduced. Moreover, there will be vibration and noise problems when rotating at high speed, which greatly reduces the experience of using the equipment, and the noise will also affect the environmental quality of pe...

AI Technical Summary

Problems solved by technology

At present, when most cooling fans on the market reach high speeds, the air flow is often reversed due to the pressure difference between the air inlet end and the air outlet end, the air intake at the air inlet end is reduced, and the heat dissipation performance is greatly reduced.

Moreover, there will be vibration and noise problems when rotating at high speed, which greatly reduces the user experience of the equipment, and the noise will also affect the environmental quality of people's production and life.

Moreover, the vibration caused by the rotation of the fan is harmful to the equipment. Long-term vibration will cause the parts to loosen, and even cause accelerated wear of the parts.

Therefore, to achieve high speed and low vibration often needs to be achieved by improving the precision of equipment processing and installation, which will increase production costs and is not conducive to reducing costs

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