Liquid mixer, electrolyte analysis device, and liquid mixing method

A liquid mixer comprising:

• a first inflow path into which a first liquid flows;
• a second inflow path into which a second liquid flows;
• a liquid merging portion that is connected to the first inflow path and the second inflow path and where the first liquid and the second liquid merge;
• an outflow path that is connected to the liquid merging portion and where a merged liquid of the first liquid and the second liquid flows out;
• and
• a single liquid sending device installed between the second inflow path and the liquid merging portion, wherein
• the liquid merging portion has a first flow path connected to the first inflow path and a second flow path connected to the second inflow path,
• the first flow path branches into at least two flow paths,
• the second flow path branches into at least two flow paths,
• one of the flow paths that have branched off the first flow path and one of the flow paths that have branched off the second flow path are connected to each other and merge, and
• the other one of the flow paths that have branched off the first flow path and the other one of the flow paths that have branched off the second flow path are connected to each other and merge on a downstream side and connected to the outflow path;
• and
• the liquid mixer further comprising:
• a first valve installed on the first inflow path;
• a second valve installed on the second inflow path;
• a third valve installed on the outflow path;
• and
• a control device controlling driving of the liquid sending device, the first valve, the second valve, and the third valve,
• wherein the control device executes
• processing of suctioning the first liquid to the liquid merging portion with the liquid sending device by opening the first valve and closing the second valve and the third valve,
• processing of suctioning the second liquid to the liquid sending device with the liquid sending device by closing the first valve, opening the second valve, and closing the third valve, and
• processing of sending the second liquid from the liquid sending device to the liquid merging portion and discharging the merged liquid of the first liquid and the second liquid from the liquid merging portion by closing the first valve and the second valve and opening the third valve.