Patent ID: 9233346
Filing Date: 2016-01-12
CPC Classification: B01F,B01L,G01N

Claim Text:
1. A substance mixing apparatus, comprising: two or more flow paths in each of which an orifice, from which a fluid that flows therethrough is externally discharged, is formed, wherein in at least one of the flow paths, the fluid includes a first fluid and a second fluid; a minute pipe that introduces a laminar flow of the second fluid including minute particles in a laminar flow of the first fluid in the at least one of the flow paths; a narrowing portion of the at least one of the flow paths, the narrowing portion being downstream from the minute pipe and having a cross sectional area that gradually narrows from an upstream side of the narrowing portion to a downstream side of the narrowing portion; an oscillation device that forms droplets of the fluid discharged from each of the orifices by oscillating at least the orifice part of the flow paths at a predetermined oscillation frequency and discharges the droplets such that the droplets collide with one another; and a detection means arranged to detect the minute particles in a detection portion of the at least one of the flow paths positioned downstream of the minute pipe and upstream of the orifice, wherein the detection portion is arranged within the narrowing portion such that a cross-sectional area of the orifice is smaller than a cross-sectional area of the detection portion, which is smaller than a cross-sectional area of the at least one of the flow paths at the upstream side of the narrowing portion.