Patent ID: 7156487

Claim:
A microfluidic pump driven by thermoacoustic effect, comprising: a fluid-storing tank; at least one microchannel, arranged at a tank body of the fluid-storing tank for communicating the fluid-storing tank with outside world; a thermoacoustic device, further comprising: a resonant tube, within which stores a working gas and forming a resonant acoustic wave; at least one stack, arranged in the resonant tube; a heater, fixed in the resonant tube and located at one side of the stack; at least a heat exchanger, arranged at a side of the stack in the resonant tube opposite to the heater; and wherein, a working microfluid is stored in the fluid-storing tank, and the heater located at the side of the stack heats the working gas such that a temperature gradient greater than a critical temperature gradient between the two sides of the stack is formed, and consequently, the acoustic wave is generated.