| 摘要 |
A liquid transport apparatus includes an actuator and a flow passage unit having discharge ports. The flow passage unit is formed by stacking plates. Flow passage-forming holes, which are formed through the respective plates, are communicated with each other to form a flow passage. The respective plates have mainstream areas in which the through-holes of all of the plates are overlapped, and branch areas in which the adjoining through-holes are overlapped. The branch areas are arranged in a spiral form directed toward the discharge ports. Therefore, a vortex flow of the liquid is generated, and the bubbles, which stay in the flow passages, are reliably discharged.
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