Fan frame structure

Abstract

A fan frame structure includes a plastic frame and a metal reinforcing member. The inner side of the frame defines a flow passage for receiving a fan wheel. The metal reinforcing member is joined to the frame intimately. The inner side of the frame is arranged to have a largest diameter so that the flow passage provides more space for accommodating a larger sized fan wheel. Hence, strength of the frame is reinforced, vibration and noise are reduced during a fan wheel running and integral effect of heat dissipation is enhanced largely.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention is related to a fan frame structure and particularly to a fan frame, which provides a plastic frame part and a metal reinforcing member. [0003] 2. Brief Description of the Related Art [0004] The fan is an essential part of air cooling radiator device and plays an important role for heat dissipation effect. The fan is the only movable part in the radiator device. Meanwhile, noise of the radiator device is influenced directly by the running fan. The fan induces air to move through the cooling fins with a specific speed and a specific way for heat exchange being performed between the air and the cooling fins such that accumulated heat at the cooling fins can be carried away to achieve heat removal with forced convection. [0005] Air flow and air pressure decide a fan being strong or weak. The air flow refers a product of an area of the air passing through and a velocity of the air passing through t...

AI Technical Summary

Benefits of technology

[0010] In order to solve the preceding problems, an object of the present invention is to provide a fan frame structure with which the inner side of the fan frame expands toward the outer side thereof to the most for the flow passage thereof being able to receive a fan wheel with a bigger diameter and promoting heat dissipation effect.

[0011] Another object of the present invention is to provide a fan frame structure in which the fan frame is composed of a plastic frame part and a metal reinforcing member for strengthening the fan frame and lessening noise and vibration.

[0012] Accordingly, the fan frame structure according to the present invention includes a plastic frame member and a metal reinforcing member. The frame member has an outer side and an inner side. The inner side of the frame member defines a flow passage for receiving a fan wheel. The metal reinforcing member is joined to the frame intimately. The inner side of the frame is arranged to have a largest diameter so that the flow passage provides more space for accommodating a larger sized fan wheel. Hence, strength of the frame is reinforced, vibration and noise are reduced during a fan wheel running and integral effect of heat dissipation is enhanced largely.

Problems solved by technology

Meanwhile, noise of the radiator device is influenced directly by the running fan.

However, due to space limitation, not all the cooling systems are able to use the big sizes fan even if the smaller sized fan is unable to reach the expect effect of heat dissipation.

The fan frame with plastic material is light but the strength thereof becomes weak in case of the fan frame being changed to be thinner.

Under these circumstances, normal operation of the fan is affected significantly.

The metal fan frame provides enough strength but it is heavy and easy to produce louder noise while the air passing the fan frame to hit the inner wall of the fan frame.

In addition, the metal fan frame is more costly than the plastic fan frame and manufacturing process of the metal fan frame is more complicated than the plastic fan frame.

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