Pumps – Condition responsive control of pump drive motor – Responsive to accumulation of pumped liquid in receiver
Patent
1994-12-20
1996-09-24
Koczo, Michael
Pumps
Condition responsive control of pump drive motor
Responsive to accumulation of pumped liquid in receiver
417390, 417391, 417407, 416223B, F04D 2922, F04B 910, F04B 4900
Patent
active
055585027
ABSTRACT:
In a turbo, pump according to the present invention, blades 3e and a shroud 3f are continuously formed with a boss 3c of a turbine wheel 3, a meridian plane configuration of the shroud 3f is formed as an concave arcing rotatable surface. A boss shroud 3f.sub.1 is formed substantially parallel to the axis of rotation O. A portion 3e.sub.2 of a blade outlet edge 3e.sub.1 is smoothly continuous to the boss shroud 3f.sub.1 and largely projects downstream. A portion 3e.sub.3 of the blade outlet edge 3e.sub.1 is formed substantially perpendicular to the axis of rotation O. The blade outlet edge 3e.sub.1 is formed with a smooth arc-like curve projecting convexly downstream between the portion 3e.sub.3 and the portion 3e.sub.2. An angle of the blade outlet edge 3e.sub.1 is set to an angle of substantially 0.degree. at the portion 3e.sub.2 of the blade outlet edge 3e.sub.1 and to substantially the conventional degree of angle at the portion 3e.sub.3 of the blade outlet edge 3e.sub.1. Further, the blade inlet 3a and the blade outlet 3b are connected there between by a curve.
REFERENCES:
patent: 1693102 (1928-11-01), Worthington
patent: 2726606 (1955-12-01), Davidson
patent: 3981626 (1976-09-01), Onal
patent: 4721436 (1988-01-01), Lepert
patent: 5242268 (1993-09-01), Fukazawa et al.
Chin Chugen
Fukazawa Tetsuo
Koczo Michael
Pacific Machinery & Engineering Co., Ltd.
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