| 摘要 |
A micromixer includes a stack unit in which a first plate and a second plate are stacked, the first plate having a first microtubular flow path connected to a fluid supply path through which a first fluid flows, the second plate having a second microtubular flow path through which a second fluid flows and which is connected to a fluid supply path through which the second fluid flows; and a mixing space which is connected to an outlet of the first microtubular flow path and an outlet of the second microtubular flow path and in which the first fluid and the second fluid are mixed. In at least one of the first plate and the second plate, the microtubular flow path has an inlet portion connected to the fluid supply path and constituted by a single flow path, and an outlet portion connected to the mixing space, and a cross-sectional area of the fluid that liquid-tightly flows through the microtubular flow path in the outlet portion is smaller than a cross-sectional area of the fluid that liquid-tightly flows through the single microtubular flow path in the inlet portion.
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