Patent ID: 6244738
Filing Date: 2001-06-12
Classification: B01F,B01L,Y10S

Abstract:
A stirrer comprisingan introducing portion for introducing plural sample fluids to be stirred into a stirring chamber having a channel;plural ultrasonic vibrators arranged on walls of the channel or its periphery and opposed asymmetrically at both sides of the channel so that ultrasounds act on the downstream side of the introducing portion in a direction perpendicular to the direction of the stream of the sample fluids in the channel of the stirring chamber and further so that asymmetric acoustic intensity distribution is generated;said ultrasonic vibrators constituting means for stirring the plural sample fluids by an acoustic streaming from the ultrasounds generated by the ultrasonic vibrators whereby the radiation directions of the ultrasounds are alternate and asymmetric and the intensity distributions of the radiated ultrasounds become asymmetric so that an effective acoustic streaming is generated.