Method and device for regulating speed of fan

Abstract

The invention discloses a method and device for regulating the speed of a fan. In an electronic apparatus provided with at least two fan frames, when a system detects out that a fan in one of fan frames is invalid, the regulation is performed by increasing the rotation speed of the fan in the normal frame and reducing the rotation speed of the fan in the fan frame in which the invalid fan is arranged. According to the invention, when the fan in one fan frame is invalid, the significant reflow and low-speed area can be eliminated, the apparatus is kept in normal running for a long time and is kept safe, and therefore, enough time is provided for an apparatus repairer.

Description

technical field [0001] The invention relates to the technical field of data communication, in particular to a method and a device for adjusting the speed of a fan when at least two or more fan frames are installed in a cabinet and there is a failed fan. Background technique [0002] Such as figure 1 As shown, as the performance and power of mid-to-high-end frame-type communication devices become more and more powerful, in order to meet their heat dissipation requirements, usually two or more fan frames are installed in the case of electronic equipment, and each fan frame is equipped with With several fans, the air volume and air pressure values ​​of the fans are getting higher and higher. In the existing technology, when a certain fan frame fails in the system, other fans often maintain the original speed or force it to the highest speed. Because the wind pressure value of the corresponding area of ​​the failed fan is very small at this time, the wind pressure of the adjace...

AI Technical Summary

Problems solved by technology

[0004] However, in the above implementation scheme, when the remaining fans are forced to rotate at the highest speed, due to the large difference in wind pressure between the failed fan and the surrounding highest-speed fans, it is easy to form an airflow recirculation area or a low-speed area locally, and the device temperature is likely to drop. In a short period of time, if the temperature specification of the device design is exceeded, the equipment maintenance personnel will not have time to confirm and troubleshoot the fault, the equipment will be powered off, and the service will be completely interrupted, which may cause serious consequences; if the original speed of other fans remains unchanged, when the original speed of the fan When it is high, the wind pressure difference between the failed fan and the surrounding adjacent fans is very large, and it is also easy to form an airflow recirculation area or a low-speed area locally, and the same consequences as in the first implementation scheme will appear; and if the original fan speed Low, when a single fan fails, the wind speed in the area corresponding to the failed fan is lower, and the temperature of the device may exceed the temperature specification of the device design in a short period of time, and the equipment personnel have no time to confirm and troubleshoot

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