Rotary kinetic fluid motors or pumps – Smooth runner surface for working fluid frictional contact
Patent
1995-09-14
1997-09-09
Kwon, John T.
Rotary kinetic fluid motors or pumps
Smooth runner surface for working fluid frictional contact
415143, F01D 136
Patent
active
056649355
ABSTRACT:
A dry turbo vacuum pump has a multistage circumferential impeller supported on a shaft, and a stator which cooperates with it to form a multistage peripheral flow pump. A centrifugal pump arranged at an inlet side of the peripheral flow pump is also mounted on the same shaft, so that gas sucked from the inlet is discharged to the atmosphere from the peripheral flow pump. The multistage peripheral flow pump and at least one stage of the centrifugal pump are integrated.
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Kikuchi Katsuaki
Mase Masahiro
Matsumura Noboru
Nagaoka Takashi
Nishiuchi Akira
Hitachi , Ltd.
Kwon John T.
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