Fan rotation speed control method and device

Abstract

The invention discloses a fan rotation speed control method and device. The method is applied to equipment provided with a fan. The method includes the steps that parameters for determining the target rotation speed of the fan are obtained, and the parameters comprise one or more of the environment parameter of the environment where the equipment is located, the equipment arrangement posture parameter and the work power of the equipment; the target rotation speed of the fan installed in the equipment is determined according to the obtained parameters for determining the target rotation speed of the fan; the rotation speed of the fan installed in the equipment is controlled according to the determined target rotation speed. By means of the fan rotation speed control method and device, the rotation speed of the fan can be controlled accurately.

Description

technical field [0001] The invention relates to the technical field of heat dissipation, in particular to a fan speed control method and a fan speed control device. Background technique [0002] As a common heat dissipation tool, fans are widely used in computers, communication products, optoelectronic products, consumer electronics, automotive electronic equipment, switches, medical equipment, heaters, air conditioners, frequency converters, teller machines, car freezers, welding Machines, induction cookers, audio equipment, environmental protection equipment, refrigeration equipment and other traditional or modern equipment. [0003] Usually within a certain speed range, the higher the speed of the fan, the better the cooling effect it can achieve. But once the speed of the fan exceeds the rated value of the speed, the fan itself will generate heat when it is overloaded for a long time, and the longer the time, the greater the heat generated. On the contrary, it may incr...

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Problems solved by technology

But once the speed of the fan exceeds the rated value of the speed, the fan itself will generate heat when it is overloaded for a long time, and the longer the time, the greater the heat generated. On the contrary, it may increase the thermal power of the equipment; in addition, the higher the fan speed and the greater the air volume, the greater the noise will be, and the fan may produce strong noise during long-term high-speed operation; and because the fan is Mechanical components, long-term high-speed operation may shorten the life of the fan and cause early failure of the fan

[0004] However, in the prior art, for some equipment with large heat generation, in order to ensure that the temperature of the equipment will not exceed the upper limit, the fan is usually fixed at a relatively high speed to ensure that the temperature of the entire equipment system does not exceed the upper limit, although it is always at Relatively high heat dissipation efficiency, but the noise is often increased, and the thermal power will also increase, and it is easy to cause early failure of the fan

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