| 摘要 |
<p>Method of pumping fluid through a tubing (200) by operating a pulse generator (100) at one end of the tubing (200), the pulse generator (100) reciprocates a displacement member (30) at a frequency of less than 3 Hz to generate pressure waves in the fluid which make a pulse converter (300) at the other end of the tubing (200) permit a flow of the fluid into the tubing (200). Further, there are disclosed a pulse generator (100) for use in the pumping method, and a pump system comprising the pulse generator (100). Said pulse generator (100) comprises: a connector (10) for connecting the pulse generator (100) with a tubing (200) through which fluid is to be pumped; a reciprocally operable displacement member (30, 32, 34) for generating pressure waves in the fluid to be pumped, said displacement member (30, 32, 34) being arranged in a cavity (20); a discharge port (42) for discharging pumped fluid; and a delivery passage (40) for delivering the pumped fluid from the connector (10) to the discharge port (42); and a return passage (50) for returning fluid delivered through the delivery passage (40) to the cavity (20). The displacement member (30, 32, 34) is arranged in the cavity (20) close to the connector (10) so as to face the connector (10).</p> |
