| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid delivery device capable of making an effective use of fluid discharged from a back side chamber.SOLUTION: A fluid delivery device includes: a pressurizing chamber with a first vortex ring generation opening formed in the front surface thereof; a moving body provided behind the pressurizing chamber, and moving in a direction of the first vortex ring generation opening to pressurize fluid in the pressurizing chamber so that a vortex ring is generated at the first vortex ring generation opening; and a back side chamber provided behind the moving body, and having a second vortex ring generation opening formed at an opposite side of the pressurizing chamber so that a vortex ring is generated in a direction opposite to the vortex ring generated at the first vortex ring generation opening by pressurizing the fluid inside when the moving body moves in a direction opposite to the first vortex ring generation opening. |
