Mixed-fluid delivery device

A mixed-fluid delivery device configured to generate a mixed fluid by mixing an ejected gas with a liquid and deliver the mixed fluid to an outside, the mixed-fluid delivery device comprising:

• a piezoelectric pump including a piezoelectric vibrator and a pump cabinet, the piezoelectric vibrator including a piezoelectric element and a vibrating plate, the pump cabinet having the piezoelectric vibrator therein, and the piezoelectric pump being configured to discharge the gas;
• and
• a case body including a pump housing chamber, a liquid reservoir portion, a mixing portion, a nozzle portion and a conducting portion, the pump housing chamber housing the piezoelectric pump, the liquid reservoir portion being configured to store the liquid, the mixing portion being configured to generate the mixed fluid, the nozzle portion being configured to eject the gas discharged from the piezoelectric pump to the mixing portion, and the conducting portion being configured to conduct the liquid toward the mixing portion,
• wherein the case body has a reflux path through which a residual liquid remaining in the mixing portion without being delivered to the outside is returned to the liquid reservoir portion, and
• the reflux path is provided so as to be in contact with at least a part of the pump cabinet.