| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve a problem that change of inertia effect due to change of drive waveform or the like in a diaphragm greatly affects output in a pump in which the output is increased utilizing inertia effect of fluid by great inertance of an outlet passage. <P>SOLUTION: A pump chamber 3 of which volume can be changed by the diaphragm 5, an inlet passage 1 for operating fluid to flow into the pump chamber 3, an outlet passage 2 for the operating fluid to flow out of the pump chamber 3, and a check valve 4 disposed on the inlet passage 1 are provided. The inertance of the inlet passage is smaller than the inertance of the outlet passage. With the inertance L(kg/m<SP>4</SP>) for the outlet passage, change X(m) of the diaphragm 5 from a lower dead center to an upper dead center, and cross section S(m<SP>2</SP>) of the pump chamber, the diaphragm 5 is driven by sine waves of frequency f(Hz) satisfying a formula (1). <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
