20140219838 | Piezoelectric Cooling Fan - A piezoelectric cooling fan comprises a support frame and two piezoelectric actuators. Each piezoelectric actuator includes an electrical-conductive plate and a piezoelectric plate attached to the electrical-conductive plate, wherein an edge portion of the electrical-conductive plate is fixedly attached to a base of the support frame and approximately aligned with an edge portion of the piezoelectric plate attached thereto. The two piezoelectric actuators are symmetrically arranged with respect to the base of the support frame to define a cavity therebetween and are electrically connected with an AC power source, so that the piezoelectric actuators can be driven to flex towards and away from each other with respect to the edge portions of the piezoelectric actuators, so that air pulses can be induced from the cavity between the piezoelectric actuators for heat dissipation. The piezoelectric cooling fan is light, compact, low noise, low power, and free of electromagnetic interference. | 08-07-2014 |