Patent ID: 8715585

Claim:
A mixing unit comprising: a stacked member in which three or more mixing elements are stacked; and a first plate and a second plate between which the stacked member is sandwiched and which are arranged opposite each other, wherein the three or more mixing elements are plate-shaped and each comprises a plurality of first through holes; wherein a direction in which the mixing elements are stacked extends from the first plate to the second plate through the stacked member; wherein a direction in which the mixing elements extend is perpendicular to the direction in which the mixing elements are stacked; wherein the second plate comprises an opening portion communicating with at least one of the first through holes in the mixing elements; wherein the mixing elements are arranged such that part or all of the first through holes in one of the mixing elements communicate with other first through holes in an adjacent mixing element; and wherein the mixing elements are arranged to form fluid paths to allow the fluid to be both divided and combined both in the direction in which the mixing elements extend and in the direction in which the mixing elements are stacked.