Patent ID: 8899911
Filing Date: 2014-12-02
Classification: F04D,Y02B

Abstract:
1. A heat-dissipating system, comprising: a plurality of fans, mutually connected in parallel; a plurality of rotation-speed detection units, respectively coupled to the corresponding fans for detecting and outputting a plurality of rotation-speed values corresponding to the fans; a fan driver, coupled to the fans for generating a fan control signal to control rotation-speeds of the fans; and an operation unit, coupled to the rotation-speed detection units and the fan driver, the operation unit receiving and calculating the rotation-speed values to generate a rotation-speed reference value, and controlling the fan driver to generate the corresponding fan control signal according to the rotation-speed reference value; wherein when the rotation-speed reference value is greater than a first threshold value, the fan driver decreases the rotation-speeds of the fans through the corresponding fan control signal; when the rotation-speed reference value is less than a second threshold value, the fan driver increases the rotation-speeds of the fans through the corresponding fan control signal.