| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for injecting fluid which injects a strong pulse flow even with a long connection passage pipe made of a material with low rigidity. <P>SOLUTION: A method for injecting fluid for a fluid injection device 1 includes: a first pulsating flow generation part 20 and a second pulsation flow generation part 30; a pump 10 supplying fluid to the first pulsating flow generation part 20; and the connection passage pipe 4 connecting the first pulsating flow generation part 20 with the second pulsating flow generation part 30; drive signals input to piezoelectric elements 21, 31 respectively disposed to the first pulsating flow generation part 20 and the second pulsating flow generation part 30 having the same cycle; and a control performed to delay a phase of the drive signal of the second pulsating flow generation part 30 from a phase of the drive signal of the first pulsating flow generation part 20 by time required for the propagation of pressure waves for a distance between the first pulsating flow generation part 20 and the second pulsating flow generation part 30. Thereby, the strong pulse flow is injected even with a long connection passage pipe made of a material with low rigidity. <P>COPYRIGHT: (C)2011,JPO&INPIT |
