Pumps – One fluid pumped by contact or entrainment with another – Jet
Patent
1997-08-08
2000-03-28
Freay, Charles G.
Pumps
One fluid pumped by contact or entrainment with another
Jet
417163, 417170, 417197, F04F 500
Patent
active
060423404
ABSTRACT:
An fluid handling device (10) having an elongate tubular body which defines a through bore (20) between an inlet end (13) and an outlet end (14) of the body. The device also includes first and second annular chambers (30,38), each of which extends substantially concentrically around the bore (20), the first chamber (30) being in communication with the bore (20) via a first set of passages (48) spaced circumferentially around the bore (20), and the second chamber (38) being in communication with the bore (20) via a second set of passages (49) spaced circumferentially around the bore (20). The passages (48,49) of each set communicate with the bore (20) at a respective axial location (45,46) intermediate the ends (13,14) of the bore (20), with the location (46) for the second set (49) being between the location (45) for the first set (48) and the outlet end (14) of the housing, and each passage of each set (48,49) having an opening into the bore (20) which faces towards the outlet end (14) of the body. The device (10) also includes a first inlet port (42) by which the first chamber (30) is connectable to a source of pressurized fluid, and a second inlet port (44) by which the second chamber (38) is connectable to a source of pressurized fluid. The passages (48,49) of each set are inclined radially towards the axis A of the bore (20) along respective lines such that the lines for passages of the first set (48) converge along the bore (20) to a first region X towards, at or beyond the outlet end (14), and the lines for passages of the second set (49) converge to a second region Y beyond the first region X.
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Karassik, Igor J., William C. Krutzsch, Warren H. Fraser and Joseph P. Messina, Pump Handbook, McGraw-Hill Book Company, Feb. 16, 1997.
Freay Charles G.
Tyler Cheryl J.
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