Rotary kinetic fluid motors or pumps – Axially opposed working fluid paths to or from runner – Pump impeller means
Patent
1987-11-12
1989-04-11
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
Axially opposed working fluid paths to or from runner
Pump impeller means
415106, 415170B, 416188, F04D 2908
Patent
active
048201154
ABSTRACT:
An improved open impeller for centrifugal compressors or the like that includes a hub portion and a disc portion having front and rear surfaces. A plurality of circumferentially spaced blades are positioned on the front surface of the impeller disc. A plurality of circumferentially spaced vanes are located on the rear suface of the disc and generally located between adjacent ones of the blades. The vanes are elongated and have their chords disposed at an angle relative to a radius of the circle on which the vanes are disposed to generate a pressure preventing gas exiting the blades from passing behind the rear surface of the impeller. Also, the vanes may be angled relative to the rear surface to produce a thrust counteracting the thrust produced by the impeller blades. The arrangement of the vanes is such that rigidity is provided to the impeller disc reducing the vibration of the disc when rotating at high speeds.
REFERENCES:
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patent: 3123010 (1964-03-01), Witt et al.
patent: 3277222 (1976-07-01), Jagusch et al.
patent: 3481531 (1969-12-01), MacArthur et al.
patent: 4277222 (1981-03-01), Barbeau
patent: 4527947 (1985-07-01), Elliott
patent: 4613281 (1986-09-01), Lubieniecki
Dresser Industries Inc.
Fiorito Edward G.
Garrett Robert E.
Peoples William R.
Pitko Joseph M.
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