Liquid mixing device and liquid chromatograph

摘要

A liquid mixing device that decreases a concentration non-uniformity in the flow direction of a mobile phase and a liquid chromatograph that uses the liquid mixing device are provided. The liquid mixing device is configured to include a flow channel unit that is made from an introduction channel, a branch portion that is positioned in a downstream of the introduction channel, multiple branched flow channels that branch from the branch portion, a junction portion in which the multiple branched flow channels join together, and a discharge channel of the downstream of the junction portion. The multiple branched flow channels are different in terms of any one of, or several of width, depth, and length that are associated with an external shape, and a structure filling the inside of the flow channel and thus the times for the liquid to pass through the branched flow channels are different from each other.

主权项

1. A liquid mixing device comprising:
a plurality of flow channel units, each comprising:
an introduction channel through which a liquid is introduced;a branch portion joined to a downstream end of the introduction channel;a first branched flow channel and a second branched flow channel each extending from the branch portion, the first and second branched flow channels defining a time difference for the liquid to flow through the first branched flow channel relative the second branched flow channel;a junction portion joining the first and second branched flow channels at an end opposite the branch portion; anda discharge channel disposed at a downstream end of the junction portion, wherein the discharge channel of a first flow channel unit of the plurality of flow channel units is joined to the introduction channel of a second flow channel unit of the plurality of flow channel units, the time difference of the first flow channel unit being different than the time difference of the second flow channel unit.