Droplet ejection apparatus and droplet ejection method using the same
AssigneeKorea Institute of Machinery & Materials
InventorsShin Hur, Duck Gyu Lee, Bo-Yeon Lee
Life of this patent
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Abstract
In a droplet ejection apparatus and a droplet ejection method using the droplet ejection apparatus, the droplet ejection apparatus includes a liquid supply unit, a nozzle and a standing wave generating unit. The liquid supply unit is configured to provide a pressure to a liquid. The nozzle is connected to the liquid supply unit through a connecting conduit, to eject the liquid with a droplet. The standing wave generating unit is configured to generate a standing wave around the nozzle at which the droplet is formed, to detach the droplet from the nozzle.
Claims13
A droplet ejection apparatus comprising:
- a liquid supply unit configured to provide a pressure to a liquid;
- a nozzle connected to the liquid supply unit through a connecting conduit, to eject the liquid with a droplet;
- and
- a standing wave generating unit configured to generate a standing wave around the nozzle at which the droplet is formed, to detach the droplet from the nozzle,
- wherein the standing wave generating unit comprises,
- a first standing wave generating part covering at least a partial portion of the nozzle and configured to form a first standing wave area in which a first standing wave is formed, and
- a second standing wave generating part connected to the first standing wave generating part, configured to amplify the first standing wave generated from the first standing wave generating part, and configured to form a second standing wave area in which a second standing wave is formed,
- the second standing wave generating part comprises a tunnel defined through a first standing wave chamber of the first standing wave generating part,
- wherein the tunnel comprises,
- a first tunnel connected to the first standing wave area, and
- a second tunnel connected to the first tunnel,
- wherein the first tunnel and the second tunnel are alternately disposed with each other,
- wherein the first tunnel has a first diameter and a first thickness, and the second tunnel has a second diameter smaller than the first diameter and a second thickness, respectively, and
- wherein the first diameter and the first thickness and the second diameter and the second thickness are properly changed without changing an entire thickness of the tunnel in the second standing wave generating part.
Dependencies are inferred from the claim text.