Rotary kinetic fluid motors or pumps – Selectively adjustable vane or working fluid control means
Patent
1997-08-05
1999-02-23
Verdier, Christopher
Rotary kinetic fluid motors or pumps
Selectively adjustable vane or working fluid control means
415150, F01D 1716
Patent
active
058736964
ABSTRACT:
A turbomachine having variable angle diffuser vanes wed with a centrifugal pump. The performance of a diffuser is greatly enhanced by the use of adjustable angle diffuser vanes which can be set to a wide range of vane angles to provide a variable size of an opening between adjacent vanes. The demonstrated pumping system has a significantly wider operating range than that in conventional pumping systems over a wide flow rate, and is particularly effective in the low flow rate range in which known diffuser vane arrangements would lead to surge in the entire system and other serious operational problems.
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patent: 3372862 (1968-03-01), Keonig, III
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patent: 5299909 (1994-04-01), Wulf
patent: 5618160 (1997-04-01), Harada et al.
K.K. Botros and J.F. Henderson "Developments in Centrifugal Compressor Surge Control--A Technology Assessment", Transaction of the ASME, vol. 116, Apr. 1994.
Harada Hideomi
Nishiwaki Shunro
Takei Kazuo
Ebara Corporation
Verdier Christopher
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