Patent ID: 8079748

Claim:
A liquid agitating device, comprising an agitator comprising a substrate and a sound wave generator that generates a sound wave; and a container for containing a liquid to be agitated, wherein the container has a bottom wall and a plurality of side walls; wherein the sound wave generator is arranged on a surface of the substrate that is on an opposite side of the substrate from a surface of the substrate positioned adjacent to a wall surface of the container; wherein the substrate or an inner wall surface of the container forms a transmitting portion that transmits the sound wave generated by the sound wave generator: and wherein at least a portion of the transmitting portion is in contact with a liquid, the transmitting portion emits the sound wave towards the liquid at the portion in contact with the liquid, and the sound wave emitted toward the liquid generates a local flow within the liquid and agitates the liquid, wherein the transmitting portion further includes a sound wave detector that detects the sound wave generated by the sound wave generator, and the sound wave detector includes a processor that performs signal processing on the sound wave detected.