Rotary kinetic fluid motors or pumps – With means for re-entry of working fluid to blade set – Plural – independent – serially acting re-entry means
Patent
1992-08-03
1994-02-01
Kwon, John T.
Rotary kinetic fluid motors or pumps
With means for re-entry of working fluid to blade set
Plural, independent, serially acting re-entry means
415 574, 415914, 415 587, F01D 112
Patent
active
052827186
ABSTRACT:
The outer shroud of an axial flow compressor is treated to remove the low momentum flow adjacent the tips of the compressor blades in a judiciously located and sized passageway that removes the low momentum flow relative to the rotor blades at a location downstream of the blades' leading edge and returned at a location upstream of the point of removal. It being critical that no more than 12% of the total flow in the compressor rotor is removed for treatment. Anti-swirl vanes in the passageway serve to remove or reverse the swirl component from the removed low momentum flow. The intake is so designed that it selectively removes only the weak low momentum flow relative to the rotor and encourages the strong mainstream flow to remain in the main gas stream.
REFERENCES:
patent: 743883 (1903-11-01), Kalbach
patent: 948692 (1910-02-01), Dodd
patent: 1349487 (1920-08-01), Bennett
patent: 2709917 (1955-06-01), Bruynes
patent: 3011762 (1961-12-01), Pouit
patent: 3189260 (1965-06-01), Ivanov
patent: 3580692 (1971-05-01), Mikolajezak
patent: 4086022 (1978-04-01), Freeman et al.
patent: 4212585 (1980-07-01), Swarden et al.
patent: 4239452 (1980-12-01), Roberts, Jr.
patent: 4375937 (1983-03-01), Cooper
patent: 4630993 (1986-12-01), Jensen
patent: 4673331 (1987-06-01), Kolb
patent: 4990053 (1991-02-01), Rohne
ASME vol. 109, Mar. 1987 Improvement of Unstable characteristics of an Axial Flow Fan by Air-Separator Equipment--Y. Mijake et al.
Cransfield Institute of Tech. Feb. 1988, Appl. of Recess vaned treatment to Axial Flow Compressors--A. R. Azimian et al.
Koff Steven G.
Mazzawy Robert S.
Nikkanen John P.
Nolcheff Nick A.
Friedland Norman
Kwon John T.
United Technologies Corporation
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